Walking vehicle

Abstract

A walking vehicle comprises a vehicle frame (1) and a pedal device, the vehicle frame (1) comprises a vehicle frame head tube (1-1) arranged at the front end or the rear end, a direction wheel support (2) is hinged to the interior of the vehicle frame head tube (1-1), and a direction wheel (3) is installed at the lower end of the direction wheel support (2); a driving wheel (9) and a driving wheel shaft (8) are arranged at the rear end or the front end of the frame (1); one group or left and right groups of transmission mechanisms for driving the driving wheel (9) to rotate by treading the pedal device are arranged between the pedal device and the driving wheel (9); each group of transmission mechanism comprises a rope winding ring (13) which is hinged with the driving wheel (9) or the driving wheel shaft (8) and can perform one-way transmission on the driving wheel (9) or the driving wheel shaft (8) along the advancing direction, and a winding rope (14) which is connected between the rope winding ring (13) and the pedal device and can wind the rope winding ring (13); and the reset device is connected with the rope winding ring (13) and can drive the rope winding ring (13) to idle reversely, so that the winding rope (14) can wind the rope winding ring (13) in a circulating manner. According to the walking vehicle, driving force is provided in a stepping mode, leg strength can be perfectly released, and the stepping frequency can be greatly increased.

Description

A walking vehicle

[0001] Cross-references

[0002] This application claims priority to PCT patent application PCT / CN2023 / 099951, entitled “A Walking Vehicle,” filed on June 13, 2023, the entire contents of which are incorporated herein by reference.

[0003] This application claims priority to Chinese patent application CN202311411258.6, filed on October 29, 2023, entitled “A walking vehicle with multi-speed regulation function,” the entire contents of which are incorporated herein by reference.

[0004] This application claims priority to Chinese patent application CN202311638168.0, entitled “A Walking Vehicle,” filed on December 2, 2023, the entire contents of which are incorporated herein by reference.

[0005] This application claims priority to Chinese patent application CN202410031816.4, filed on January 9, 2024, entitled “A Walking Vehicle,” the entire contents of which are incorporated herein by reference.

[0006] This application claims priority to Chinese patent application CN202410152396.5, entitled “A Walking Vehicle,” filed on February 3, 2024, the entire contents of which are incorporated herein by reference.

[0007] This application claims priority to Chinese patent application CN202410516145.0, entitled “A Walking Vehicle,” filed on April 27, 2024, the entire contents of which are incorporated herein by reference.

[0008] This application claims priority to Chinese patent application CN202410584572.2, filed on May 12, 2024, entitled “A Walking Vehicle,” the entire contents of which are incorporated herein by reference.

[0009] This application claims priority to Chinese patent application CN202410732278.1, filed on June 6, 2024, entitled “A Walking Vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0010] The present application relates to a means of transportation for walking, and in particular to a walking vehicle. Background Art

[0011] Cycling uses a full-rotation pedaling method. Each rotation is suitable for exerting force only within the approximately 90-degree range between 1:00 and 4:00 o'clock. However, completing a full rotation consumes significant additional energy. Furthermore, within this 90-degree range, the average torque during pedaling is approximately 90 percent of the maximum torque (the torque is significantly reduced near 1:00 and 4:00 o'clock), resulting in approximately 90 percent energy utilization. Furthermore, the leg muscles act as a forceful lever, releasing greater force the closer the knee is to straightening during pedaling. However, during cycling, during the closest-to-straight knee position, the pedals are positioned between 4:00 and 5:30 o'clock. During this period, the torque gradually decreases from approximately 70 percent to zero, making it unsuitable for exerting force. Bicycle transmissions are complex, prone to damage and dirt, and result in significant additional energy loss. Bicycle disc brake systems are prone to abnormal contact between the disc and the brake pads. The bicycle handlebars are controlled by both hands, and the handlebars do not have an automatic orientation function. When riding, the handlebars are held by the hands to control the direction, which greatly limits the freedom of the body when riding, especially when riding in winter, the hands are prone to freezing.

[0012] Summary of the Invention

[0013] To this end, the present application aims to provide a walking vehicle that uses a stepping mechanism to provide driving force, enabling perfect leg release and significantly increasing pedaling frequency. Another aim is to significantly improve energy utilization during pedaling, increasing the average torque during pedaling to approximately 97 percent of the maximum torque. Another aim is to provide a lightweight, durable, clean, and energy-efficient speed control device for the walking vehicle. A further aim is to eliminate the need for a speed control device while providing multiple driving gears, adapting to riding on roads with varying slopes. Another aim is to provide a foot brake device for the walking vehicle that allows for smooth, sudden braking, prevents brake failure or abnormal contact between the disc and brake pad, and eliminates the need for manual braking. Another aim is to increase riding stability and reduce frame load. A further aim is to provide a directional control device that replaces handlebars, allowing for easy control of riding direction by using the waist to hold the backrest, and automatically directs the vehicle forward. This significantly improves riding comfort while addressing the issue of frozen hands during winter cycling.

[0014] To achieve the above-mentioned purpose, the technical solution of the present application is: to provide a walking vehicle, which includes a frame 1 and a pedal device, the frame 1 includes a frame head tube 1-1 arranged at the front end or rear end, a steering wheel bracket 2 is hinged in the frame head tube 1-1, and a steering wheel 3 is installed at the lower end of the steering wheel bracket 2; a driving wheel 9 and a driving wheel shaft 8 are arranged at the rear end or front end of the frame 1; between the pedal device and the driving wheel 9, a group or two groups of transmission mechanisms are arranged to drive the driving wheel 9 to rotate by stepping on the pedal device; each group of transmission mechanisms includes a rope ring 13 hinged to the driving wheel 9 or the driving wheel shaft 8, which can drive the driving wheel 9 or the driving wheel shaft 8 in a unidirectional manner in the forward direction, a rope 14 connected between the rope ring 13 and the pedal device, which can wrap around the rope ring 13, and a group of reset devices connected to the rope ring 13, which can drive the rope ring 13 to rotate idly in the opposite direction, so that the rope 14 can wrap around the rope ring 13 reciprocatingly.

[0015] Optionally, the driving wheel shaft 8 is hinged to the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixed to the driving wheel shaft 8; the rope ring 13 is hinged to the driving wheel shaft 8 through two circles of steel balls 24 or a pair of bearings; the rope ring 13 transmits unidirectional transmission to the driving wheel shaft 8 through the ratchet 10 and the pawl 11; the ratchet 10 is fixed to the driving wheel shaft 8 or the driving wheel 9, and the rope ring 13 is processed with a first pawl hole 13-1 at the end facing the ratchet 10, and the pawl 11 is installed in the first pawl hole 13-1 through the annular spring 12, and the first pawl hole 13-1 extends into the ratchet 10, and the pawl 11 engages with the ratchet 10, so that the rope ring 13 can only rotate in one direction relative to the driving wheel shaft 8.

[0016] Optionally, the driving wheel shaft 8 is hinged to the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixed to the driving wheel shaft 8; the rope ring 13 transmits one-way transmission to the driving wheel shaft 8 through the rope inner ring 97 and the pawl 11; the rope inner ring 97 is fixed to the driving wheel shaft 8, and the rope ring 13 is hinged to the rope inner ring 97 through two circles of small steel balls 98; a second pawl hole 97-3 is processed on the outer circumference of the rope inner ring 97, and a pawl 11 is installed in the second pawl hole 97-3 through an annular spring 12; the inner circumference of the rope ring 13 is processed with second ratchet teeth 13-10; the pawl 11 engages with the second ratchet teeth 13-10, so that the rope ring 13 can only rotate one-way relative to the rope inner ring 97.

[0017] Optionally, the driving wheel shaft 8 is fixedly connected to the frame 1, and the driving wheel 9 is hinged to the driving wheel shaft 8 through a pair of first bearings 23; the rope ring 13 transmits one-way transmission to the driving wheel 9 through the rope inner ring 97 and the pawl 11; the rope inner ring 97 is fixedly connected to the driving wheel 9, and the rope ring 13 is hinged to the rope inner ring 97 through two circles of small steel balls 98; a second pawl hole 97-3 is processed on the outer circumference of the rope inner ring 97, and a pawl 11 is installed in the second pawl hole 97-3 through an annular spring 12; the inner circumference of the rope ring 13 is processed with second ratchet teeth 13-10; the pawl 11 engages with the second ratchet teeth 13-10, so that the rope ring 13 can only rotate one-way relative to the rope inner ring 97.

[0018] Optionally, the driving wheel shaft 8 is hinged to the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixedly connected to the driving wheel shaft 8; the rope ring 13 is the outer ring of the one-way bearing 106, and the inner ring of the one-way bearing 106 is fixedly connected to the driving wheel shaft 8.

[0019] Optionally, the driving wheel shaft 8 is fixedly connected to the frame 1, and the driving wheel 9 is hinged to the driving wheel shaft 8 through a pair of first bearings 23; the rope ring 13 is the outer ring of the one-way bearing 106, and the inner ring of the one-way bearing 106 is fixedly connected to the driving wheel 9.

[0020] Optionally, the reset device consists of a soft wire 16 and a reset spring 17, one end of the soft wire 16 is connected to the rope winding ring 13, and the other end is connected to the reset spring 17, and the other end of the reset spring 17 is connected to the vehicle body; the rope winding ring 13 is provided with a soft wire winding area 13-7 for winding the soft wire 16, and is provided with a soft wire interface 13-4 for connecting the soft wire 16.

[0021] Optionally, the reset device is composed of a reset spring 17, one end of the reset spring 17 is connected to the rope ring 13 and the other end is connected to the vehicle body; the rope ring 13 is provided with a soft wire winding area 13-7 for winding the reset spring 17, and is provided with a soft wire interface 13-4 for connecting the reset spring 17.

[0022] Optionally, the outer circumferential surface of the rope ring 13 is provided with a rope winding area 13 - 9 for winding the rope 14 , and is provided with a first rope winding interface 13 - 3 for connecting the rope 14 .

[0023] Optionally, the rope ring 13 is provided with a spiral groove 13-2 for spirally winding the rope 14, and is provided with a first rope interface 13-3 for connecting the rope 14, and the first rope interface 13-3 is provided at the head end of the spiral groove 13-2.

[0024] Optionally, the transmission mechanism is divided into two groups on the left and right; the frame 1 is provided with a central axis tube 1-2, and two left and right first pedal central axes 5 are hinged inside the central axis tube 1-2; the pedal device includes: left and right pedal rods 6 respectively fixed to the outer ends of the left and right first pedal central axes 5, and pedals 7 arranged at the free ends of the left and right pedal rods 6; the end of the winding rope 14 is connected to the free end of the pedal rod 6 on the same side.

[0025] Optionally, the transmission mechanism is divided into two groups on the left and right; the frame 1 is provided with two front and rear center axis tubes 1-2 side by side, and a first pedal center axis 5 is hinged in each center axis tube 1-2; the pedal device includes: two left and right pedal rods 6 respectively fixed to the outer ends of the two front and rear first pedal center axes 5, and pedals 7 arranged at the free ends of the left and right pedal rods 6; the end of the winding rope 14 is connected to the free end of the pedal rod 6 on the same side.

[0026] Optionally, the transmission mechanism is a group and is arranged on the right side of the driving wheel 9; the frame 1 is provided with a central axis tube 1-2, and a second pedal central axis 75 is hinged in the central axis tube 1-2, and the pedal device includes: left and right pedal rods 6 respectively fixed to the two ends of the second pedal central axis 75, and pedals 7 arranged at the free ends of the left and right pedal rods 6; the left and right pedal rods 6 are arranged symmetrically on the left and right; the end of the winding rope 14 is connected to the free end of the right pedal rod 6.

[0027] Optionally, the left and right pedal rods 6 are connected into a whole through two middle transverse tubes 6 - 11 .

[0028] Optionally, the transmission mechanism is a group and is arranged on the right side of the driving wheel 9; the frame 1 is provided with a pedal base 1-19; the pedal device includes a pedal rod 6, a cross tube 6-8 is provided at one end of the pedal rod 6, and a pair of fifth bearings 83 are installed at both ends of the cross tube 6-8. The cross tube 6-8 is hinged to the pedal base 1-19 through a pair of fifth bearings 83 and a third pedal center axis 84; a pedal 7 is provided at the free end of the pedal rod 6; the end of the winding rope 14 is connected to the free end of the pedal rod 6.

[0029] Optionally, the frame 1 includes a drive wheel mounting arm 1-8 located at the rear end, the rear end of the drive wheel mounting arm 1-8 extends rearward to the rear of the drive wheel 9, and the rear end of the drive wheel mounting arm 1-8 is connected through a tail rod 1-25; the pedal base 1-19 is arranged at the bottom of the tail rod 1-25, the cross tube 6-8 is arranged at the rear end of the pedal rod 6, the front end of the pedal rod 6 extends forward to the front of the drive wheel 9, and the foot pedal 7 is arranged at the front end of the pedal rod 6; the end of the winding rope 14 is connected to the longitudinal middle or middle front part of the pedal rod 6.

[0030] Optionally, the transmission mechanism is divided into two groups on the left and right; the pedal device consists of two left and right pedals 70, each pedal 70 is provided with a fourth rope interface 70-1, and the end of the rope 14 is connected to the pedal 70 on the same side through the fourth rope interface 70-1.

[0031] Optionally, the frame 1 is provided with a pair of guide grooves 1-14 in front of both ends of the driving wheel shaft 8, and each pedal 70 is provided with several first small pulleys 73, which extend into the guide grooves 1-14, so that the pedals 70 and the first small pulleys 73 can move up and down along the trajectory determined by the guide grooves 1-14.

[0032] Optionally, the transmission mechanism is divided into two groups on the left and right; the frame 1 includes a frame longitudinal beam 1-7, and a pair of first fixed pulleys 15 are provided on both sides of the frame longitudinal beam 1-7 at an appropriate distance in front of the driving wheel 9; the pedal device is composed of a first bidirectional pedal rod 76; two left and right fifth rope winding interfaces 76-1 are provided in the middle of the first bidirectional pedal rod 76, and the spacing between the two fifth rope winding interfaces 76-1 is equal to the spacing between the pair of first fixed pulleys 15; the end of the rope 14 passes through the first fixed pulley 15 on the same side and is connected to the fifth rope winding interface 76-1 on the same side.

[0033] Optionally, the transmission mechanism is a group; the frame 1 includes a frame longitudinal beam 1-7, and a first fixed pulley 15 is provided below the frame longitudinal beam 1-7 at an appropriate distance in front of the driving wheel 9; the pedal device is composed of a second bidirectional pedal rod 77; a sixth rope winding interface 77-1 is provided in the middle of the second bidirectional pedal rod 77; the end of the rope 14 is connected to the sixth rope winding interface 77-1 through the first fixed pulley 15.

[0034] Optionally, an eight-shaped joint 77-2 is provided in the middle of the second bidirectional pedal rod 77, and the sixth rope winding interface 77-1 is provided on the top of the eight-shaped joint 77-2; below the frame longitudinal beam 1-7, corresponding to the top of the eight-shaped joint 77-2, a limit ring 1-16 is provided for limiting the upward movement range of the second bidirectional pedal rod 77. When the second bidirectional pedal rod 77 stops being stepped on and the eight-shaped joint 77-2 extends into and adheres to the limit ring 1-16, the limit ring 1-16 makes the two ends of the second bidirectional pedal rod 77 point to the left and right sides respectively.

[0035] Optionally, a 7-shaped joint 77-3 is provided in the middle of the second bidirectional pedal rod 77, and the sixth rope winding interface 77-1 is provided on the top of the 7-shaped joint 77-3; below the frame longitudinal beam 1-7, corresponding to the top of the 7-shaped joint 77-3, a limiting groove 1-20 is provided for limiting the upward movement range of the second bidirectional pedal rod 77, and the cross-section of the limiting groove 1-20 is in an eight-shaped shape; when the second bidirectional pedal rod 77 stops being stepped on and the 7-shaped joint 77-3 extends into and adheres to the limiting groove 1-20, the limiting groove 1-20 makes the two ends of the second bidirectional pedal rod 77 point to the left and right sides respectively.

[0036] Optionally, a vertical tube 1-17 is provided below the frame longitudinal beam 1-7, adjacent to the second bidirectional pedal bar 77. When both feet step downward on the second bidirectional pedal bar 77, the inner side of the sole of the foot can step downward against the vertical tube 1-17; thereby preventing a large deviation in the stepping direction and preventing the second bidirectional pedal bar 77 from vibrating when being stepped downward.

[0037] Optionally, the transmission mechanism is a group; the frame 1 includes a frame longitudinal beam 1-7, and a first fixed pulley 15 is provided below the frame longitudinal beam 1-7 at an appropriate distance in front of the driving wheel 9; a vertical slide rail 1-21 is provided below the frame longitudinal beam 1-7 and in front of the first fixed pulley 15, and the vertical slide rail 1-21 is provided with two pulley grooves 1-22 in front and behind; a small slide tube 87 is sleeved on the vertical slide rail 1-21; a third small pulley 88 is hinged to the middle of the rear side of the small slide tube 87, and a third small pulley 88 is hinged to the upper and lower ends of the front side of the small slide tube 87; when the small slide tube 87 moves up and down, each third small pulley 8 8 respectively rolls along the track determined by the front and rear pulley grooves 1-22; the lower end of the small slide tube 87 is provided with four steel wire interfaces 87-2; below the small slide tube 87, an annular pedal 89 is connected through four soft steel wires 90, and the middle part of the annular pedal 89 is provided with four second steel wire interfaces 89-1 arranged in a rectangular shape, the upper ends of the four soft steel wires 90 are respectively connected to the four steel wire interfaces 87-2, and the lower ends of the four soft steel wires 90 are respectively connected to the four second steel wire interfaces 89-1; at the upper end of the small slide tube 87, a seventh rope interface 87-1 is provided, and the end of the rope 14 is connected to the seventh rope interface 87-1 through the first fixed pulley 15.

[0038] Optionally, the rope winding ring 13 is provided with a sealing wall 13-6 close to the first pawl hole 13-1, and the ratchet 10 is provided with a sealing edge 10-3 on the side facing the rope winding ring 13, and the lateral position of the sealing wall 13-6 corresponds to the sealing edge 10-3.

[0039] Optionally, the free end of the pedal rod 6 faces rearward; when the free end of the pedal rod 6 stays at the pedaling high point under the combined action of the reset device and the tension of the rope 14, the free end of the pedal rod 6 is close to the rope ring 13 or extends to the rear of the axis of the driving wheel shaft 8; thereby, the pedaling force will directly act on the driving wheel 9 through the rope 14 and the rope ring 13, greatly reducing the load on the frame 1, and the requirement for the rigidity of the frame 1 is relatively low, which is conducive to reducing the weight of the entire vehicle.

[0040] Optionally, two front and rear foot pedals 7 are provided at the free end of the pedal rod 6, and the front and rear foot pedals 7 correspond to the sole and heel respectively; thereby, in the first two-thirds of the pedaling stroke, the heel can be used to exert force to obtain a greater torque, and when the knee joint is about to straighten, the ankle joint exerts force to complete the last one-third of the stroke with the sole of the foot; in this way, the foot lifting height in each pedaling stroke can be greatly reduced, so that a higher pedaling frequency can be easily obtained; and thus two driving gears are automatically provided: on an uphill section, whenever the knee joint is about to straighten, the leg is lifted immediately to start the next pedaling stroke, and the heel is used to exert force throughout the whole process, and the maximum torque is always used to pedal to obtain greater forward momentum.

[0041] Optionally, the pedal 7 corresponding to the sole of the foot is hinged to the pedal rod 6, and the pedal 7 corresponding to the heel is fixed to the pedal rod 6; the rear end of the pedal rod 6 is bent upward at an appropriate angle so that the free end of the pedal rod 6 can be stepped lower.

[0042] Optionally, a second rope winding interface 6-3 is provided in the longitudinal middle, front middle or rear middle part of the inner side surface of the pedal rod 6, and the end of the rope winding 14 is connected to the second rope winding interface 6-3; a gear engaging protrusion 6-14 is provided between the second rope winding interface 6-3 and the free end of the pedal rod 6; the lateral position of the gear engaging protrusion 6-14 corresponds to the rope winding 14; the top of the gear engaging protrusion 6-14 is a sloped surface; when the free end of the pedal rod 6 swings upward to exceed a certain height, the rope winding 14 will slide along the sloped surface of the top of the gear engaging protrusion 6-14 to the bottom of the gear engaging protrusion 6-14, and when stepping on it again, the rope winding 14 will be hung under the gear engaging protrusion 6-14, which is now in the high gear position; in the high gear, when the free end of the pedal rod 6 is at a relatively high position, the gear engaging protrusion 6-14 will be engaged with the gear engaging protrusion 6-14. When the gear selector 1 is at the lowest point, the reel 14 is moved with the inner side of the sole of the foot, so that the reel 14 hung below the bottom of the gear selector 6-14 slides out from the bottom of the gear selector 6-14 to the inside, thereby breaking away from the restraint of the gear selector 6-14. The reel 14 is directly connected to the second reel interface 6-3, and the gear is in the low gear at this time. Therefore, when adjusting from low speed to high speed, it is only necessary to move the sole of the foot quickly to the outside of the pedal 7 when the free end of the pedal rod 6 is at the low point of stepping on. The free end of the pedal rod 6 will automatically rebound upward under the action of the spring force of the reset device, and will greatly exceed the rebound height during normal stepping, and cause the reel 14 to slide along the top slope of the gear selector 6-14 to the bottom of the gear selector 6-14, automatically completing the adjustment from the low gear to the high gear.

[0043] Optionally, a third foot brake device is provided at the free end of the foot pedal 6, and the third foot brake device includes: a friction inner ring 103 fixedly connected to the free end of the foot pedal 6, a friction middle ring 104 sleeved on the friction inner ring 103, which can rotate around the friction inner ring 103 and cannot move left and right relative to the friction inner ring 103, and a rubber outer ring 105 fixedly connected to the outer circumferential surface of the friction middle ring 104.

[0044] Optionally, the friction inner ring 103 is fixed to the outer side of the free end of the pedal rod 6; when the free end of the pedal rod 6 is stepped on below the normal stepping low point, the rubber outer ring 105 touches the road surface and rolls along the road surface, and sliding friction is generated between the friction middle ring 104 and the friction inner ring 103.

[0045] Optionally, the friction inner ring 103 is fixed to the inner side of the free end of the pedal rod 6, and the lateral position of the rubber outer ring 105 corresponds to the driving wheel steel ring 9-2; when the free end of the pedal rod 6 is stepped on to below the normal stepping low point, the rubber outer ring 105 will be pressed on the driving wheel steel ring 9-2; when the rubber outer ring 105 presses the rotating driving wheel steel ring 9-2, the rubber outer ring 105 rolls along the driving wheel steel ring 9-2, and sliding friction is generated between the friction middle ring 104 and the friction inner ring 103.

[0046] Optionally, a third foot brake device is provided at the front middle portion of the pedal rod 6, and the third foot brake device includes: a friction inner ring 103 fixedly connected to the inner side of the front middle portion of the pedal rod 6, a friction middle ring 104 sleeved on the friction inner ring 103, which can rotate around the friction inner ring 103 and cannot move left and right relative to the friction inner ring 103, and a rubber outer ring 105 fixed to the outer circumferential surface of the friction middle ring 104; the lateral position of the rubber outer ring 105 corresponds to the driving wheel steel ring 9-2; when the free end of the pedal rod 6 is stepped on to below the normal stepping low point, the rubber outer ring 105 will be pressed on the driving wheel steel ring 9-2; when the rubber outer ring 105 presses the rotating driving wheel steel ring 9-2, the rubber outer ring 105 rolls along the driving wheel steel ring 9-2, and sliding friction is generated between the friction middle ring 104 and the friction inner ring 103.

[0047] Optionally, a second transverse axis tube 1-24 is provided below the center axis tube 1-2; a second foot brake device is provided below and behind the second transverse axis tube 1-24, and the second foot brake device includes: a second brake arm 101 with a free end pointing to the rear and downward direction, a brake pad 102 installed on the inner side of the free end of the second brake arm 101, and a brake return spring 64 connected between the second brake arm 101 and the frame 1; the upper end of the second brake arm 101 is hinged to the frame 1; a top tube 101-2 is provided at the hinged end of the second brake arm 101, and the brake return spring 64 tends to swing the free end of the second brake arm 101 pointing to the rear and downward direction upward, so that the top tube 101-2 is provided. The upper end of the tube 101-2 is pressed forward against the central axis tube 1-2; when the upper end of the top tube 101-2 is pressed against the central axis tube 1-2, the free end of the second brake arm 101 points to the driving wheel rim 9-2 close to the ground, and the brake pad 102 is located 2-8 mm above the driving wheel rim 9-2; a cross bar 101-3 is provided on the outer side of the free end of the second brake arm 101. When the free end of the pedal rod 6 is stepped on to below the normal pedaling low point, the free end of the pedal rod 6 will push the cross bar 101-3 downward, causing the free end of the second brake arm 101 to swing downward, the brake pad 102 to press the driving wheel rim 9-2 downward, and prevent the driving wheel 9 from rolling smoothly.

[0048] Optionally, a seat 29 is provided above the rear end of the frame 1, with the force center of the seat 29 located directly above or above the rear of the driving wheel shaft 8; this can significantly reduce the length of the entire vehicle without affecting its performance.

[0049] Optionally, several pairs of pawls 11 are installed on the outer circumference of the rope winding inner ring 97; the positions of each pair of pawls 11 relative to the second ratchet teeth 13-10 are staggered, that is, when the free ends of one pair of pawls 11 are against the front side of the second ratchet teeth 13-10-1, the free ends of the remaining pairs of pawls 11 are respectively pressed against different positions of the second ratchet tooth inclined surface 13-10-2; the second ratchet teeth 13-10 arranged on the inner circumference of the rope winding ring 13 have a pitch of about 3 mm; therefore, when the free end of the pedal rod 6 changes from automatically rebounding upward to being stepped down, the rope winding ring 13 will drive the rope winding inner ring 97 to rotate through one pair of pawls 11 within a distance less than one-third of the pitch of its second ratchet teeth 13-10 (i.e. less than 1 mm), thereby greatly reducing the positive idling amplitude of the rope winding ring 13.

[0050] Optionally, the left and right foot pedals 7 are hinged to the free end of the foot rod 6 through a shifter 85; the shifter 85 is composed of a pedal transverse axis 85-1 and a pair of shifting arms 85-2 fixed to the middle of the pedal transverse axis 85-1; the ends of the pair of shifting arms 85-2 are hinged to the free end of the foot rod 6 through a fourth transverse axis 86; the left and right foot pedals 7 are respectively hinged to the two ends of the pedal transverse axis 85-1.

[0051] Optionally, the free end of the pedal rod 6 is bent upward to form an arc corner 6-5 at the bend that matches the central circumferential surface of the pedal transverse axis 85-1. At the free end of the pedal rod 6, an arc recess 6-6 is processed that matches the central circumferential surface of the pedal transverse axis 85-1. A pair of hinged plates 6-7 are provided between the arc corner 6-5 and the arc recess 6-6. The ends of a pair of shift adjustment arms 85-2 are hinged to the hinged plates 6-7 through the fourth transverse axis 86. The pedal transverse axis 85-1 can swing to fit closely to the arc corner 6-5 or the arc recess 6-6, thereby completing the mutual conversion between high gear and low gear.

[0052] Optionally, the pedal rod 6 is provided with a rope connecting arm 6-9, and the end of the rope 14 is connected to the free end of the rope connecting arm 6-9.

[0053] Optionally, the free end of the pedal rod 6 faces forward; when the free end of the pedal rod 6 points straight ahead, the free end of the rope connecting arm 6-9 points upward; when the free end of the pedal rod 6 swings downward, the free end of the rope connecting arm 6-9 pulls the end of the rope 14 forward, driving the rope ring 13 to rotate.

[0054] Optionally, the free end of the pedal rod 6 faces rearward; when the free end of the pedal rod 6 points to the rear, the free end of the rope connecting arm 6-9 points downward; when the free end of the pedal rod 6 swings downward, the free end of the rope connecting arm 6-9 pulls the end of the rope 14 forward, driving the rope ring 13 to rotate.

[0055] Optionally, the winding rope 14 is composed of two parts: a chain 14-1 and a hard steel wire 14-2. The chain 14-1 is used at the end that needs to be wrapped around the rope ring 13, and the hard steel wire 14-2 is used at the end that does not need to be wrapped around the rope ring 13. The head end of the chain 14-1 is connected to the rope ring 13, and the end of the hard steel wire 14-2 is connected to the free end of the rope connecting arm 6-9.

[0056] Optionally, a speed regulating mechanism is provided at the free end of the pedal rod 6, and the speed regulating mechanism includes: a slide rail 6-12 arranged on the pedal rod 6, a slide tube 19 sleeved on the slide rail 6-12 and movable along the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gear positions, and a reset torsion spring 21 tending to put the positioning switch 20 in a closed state; a third rope winding interface 19-1 is provided on the slide tube 19, and the end of the rope 14 is connected to the slide tube 19.

[0057] Optionally, the positioning switch 20 is hinged to the pedal rod 6; at the free end of the positioning switch 20, there is a toggle lever 20-2 and a plurality of limit stops 20-1; when the number of limit stops 20-1 is two or more, the spacing between adjacent limit stops 20-1 is adapted to the length of the slide tube 19; the reset torsion spring 21 tends to make the end of the limit stop 20-1 close to the slide rail 6-12 and prevent the slide tube 19 from moving along the slide rail 6-12; when the toggle lever 20-2 is toggled, the positioning switch 20 is reversed to reset the toggle lever 20-2. The spring 21 rotates, the end of the limit stop 20-1 disengages from the slide rail 6-12, and the slide tube 19 moves to another gear position along the slide rail 6-12 under the action of the tension of the winding rope 14; therefore, when the free end of the pedal rod 6 is at the high point or the low point, the reverse return torsion spring 21 toggles the dial rod 20-2, the free end of the positioning switch 20 rotates against the return torsion spring 21, the end of the limit stop 20-1 disengages from the slide rail 6-12, and the slide tube 19 will slide along the slide rail 6-12 under the action of the tension of the winding rope 14, and the gear adjustment is automatically completed.

[0058] Optionally, a plurality of locking recesses 6-13 are provided on the pedal rod 6 at predetermined intervals, and the positioning switch 20 is hinged to the slide tube 19; a return torsion spring 21 is connected between the slide tube 19 and the positioning switch 20; the positioning switch 20 is provided with a lock tongue 20-3, and the return torsion spring 21 tends to make the lock tongue 20-3 moved to any locking recess 6-13 extend into the locking recess 6-13; a toggle lever 20-2 is provided at the free end of the positioning switch 20; when the toggle lever 20-2 is toggled, the positioning switch 20 rotates against the return torsion spring 21, the lock tongue 20-3 disengages from the locking recess 6-13, and the slide tube 19 can move to another gear position along the slide rail 6-12.

[0059] Optionally, a speed regulating mechanism is provided at the free end of the rope-winding connecting arm 6-9, which includes a slide rail 6-12 arranged on the rope-winding connecting arm 6-9, a slide tube 19 sleeved on the slide rail 6-12 and movable along the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gear positions, and a return torsion spring 21 connected between the positioning switch 20 and the rope-winding connecting arm 6-9 and tending to keep the positioning switch 20 in a closed state; a third rope-winding interface 19-1 is provided on the slide tube 19, and the end of the rope 14 is connected to the slide tube 19; the positioning switch 20 is hinged to the rope-winding connecting arm 6-9 through a switch shaft 22; a lever 20-2 and a plurality of limit stops 20-1 are provided at the free end of the positioning switch 20; when the number of limit stops 20-1 is two or more, the position of the limit stop 20-1 is 0. When there are more than two, the spacing between adjacent limit stops 20-1 is adapted to the length of the slide tube 19; the return torsion spring 21 tends to make the end of the limit stop 20-1 close to the slide rail 6-12, preventing the slide tube 19 from moving along the slide rail 6-12; when the toggle lever 20-2 is toggled, the positioning switch 20 rotates against the return torsion spring 21, the end of the limit stop 20-1 disengages from the slide rail 6-12, and the slide tube 19 moves to another gear position along the slide rail 6-12 under the action of the tension of the winding rope 14; thus, when the free end of the pedal rod 6 is at a high point or a low point and the toggle lever 20-2 is toggled against the return torsion spring 21, the free end of the positioning switch 20 rotates against the return torsion spring 21, the end of the limit stop 20-1 disengages from the slide rail 6-12, and the slide tube 19 will slide along the slide rail 6-12 under the action of the tension of the winding rope 14, automatically completing the gear adjustment.

[0060] Optionally, a first foot brake device is provided at the middle and rear end of the frame 1, and the first foot brake device includes: one or two first brake arms 62 with their free ends pointing rearward and downward, and a brake wheel 63 hinged to the free end of the first brake arm 62; the upper end of the first brake arm 62 is hinged to the frame 1; during riding, the brake wheel 63 rolls along the ground; when the free end of the pedal rod 6 swings downward to a predetermined low point, the free end of the pedal rod 6 will press on the corresponding brake wheel 63, preventing the brake wheel 63 from rolling smoothly, and automatically completing the braking process.

[0061] Optionally, a brake return spring 64 is connected between the first brake arm 62 and the frame 1, and the brake return spring 64 causes the brake wheel 63 to hover above the ground, 1-2 cm away from the ground; when the free end of the pedal rod 6 swings downward to a predetermined low point, the free end of the pedal rod 6 just presses on the corresponding brake wheel 63 hovering 1-2 cm above the ground; at this time, when the free end of the pedal rod 6 continues to be stepped on downward, the free end of the pedal rod 6 will push the brake wheel 63 downward, the brake wheel 63 touches the ground and rolls along the ground, and the free end of the pedal rod 6 presses the brake wheel 63 to prevent the brake wheel 63 from rolling smoothly, thereby automatically completing the braking process.

[0062] Optionally, in front of the driving wheel shaft 8, one or two left and right gripping wheels 35 are hinged through one or two left and right gripping arms 32 with their free ends pointing to the rear lower or front lower. The gripping arm 32 is hinged to the frame 1, and the gripping wheel 35 is hinged to the free end of the gripping arm 32; the frame 1 is provided with a limit rod 1-10 for limiting the swing range of the handle end of the gripping arm 32; a strong spring 36 is connected between the gripping arm 32 and the frame 1; the strong spring 36 tends to make the free end of the gripping arm 32 pointing to the rear lower or front lower swing downward, and make the handle end of the gripping arm 32 lean against the limit rod 1-10; when the handle end of the gripping arm 32 is pressed against the limit rod 1-10 under the action of the strong spring 36, the free end of the gripping arm 32 points to the rear lower or front lower, and the lowest point of the gripping wheel 35 is 0.5-2 cm lower than the line between the lowest point of the driving wheel 9 and the lowest point of the steering wheel 3.

[0063] Optionally, the gripping arm 32 is one and is arranged in the transverse middle position of the frame 1; at the free end of the gripping arm 32, a first wheel axle 33 is hingedly connected through a pair of third bearings 80; a gripping wheel 35 and one or a pair of friction wheels 34 are fixedly connected to the first wheel axle 33; the gripping wheel 35 is fixedly connected to the middle of the first wheel axle 33 and is located between a pair of third bearings 80; the friction wheel 34 is located outside the third bearing 80; an extrusion rod 6-1 is provided on the pedal rod 6 on the same side as the friction wheel 34; when the free end of the pedal rod 6 swings downward to a lower point, the extrusion rod 6-1 will press on the friction wheel 34, preventing the friction wheel 34 and the gripping wheel 35 that rotates coaxially and synchronously with the friction wheel 34 from rotating smoothly, thereby automatically completing the braking process; the two ends of the first wheel axle 33 extend outward for parking the heel.

[0064] Optionally, the gripping arm 32 is one and is arranged in the transverse middle position of the frame 1; at the free end of the gripping arm 32, a third wheel axle 40-1 is fixedly connected, and two left and right gripping wheels 35 are hinged on the third wheel axle 40-1; the lateral positions of the left and right gripping wheels 35 correspond to the left and right pedal rods 6 respectively; an eight-shaped extrusion piece 6-2 is fixedly connected to the bottom of the pedal rod 6; when the free end of the pedal rod 6 swings downward to a lower point, the eight-shaped extrusion piece 6-2 arranged at the bottom of the pedal rod 6 will be pressed against both sides of the circumferential surface of the gripping wheel 35, preventing the gripping wheel 35 from rolling smoothly, and automatically completing the braking process; the two ends of the first wheel axle 33 extend outward for parking the heel.

[0065] Optionally, the frame 1 includes a frame longitudinal beam 1-7, and a cross beam 1-12 is provided below the rear end of the frame longitudinal beam 1-7; at both ends of the cross beam 1-12, a gripping arm 32 with a free end pointing forward and downward is hinged; the free end of the gripping arm 32 is hinged to a gripping wheel 35 through a fourth wheel axle 66; the left and right gripping arms 32 hinged to the two ends of the cross beam 1-12 are located on the outside of the soles of the feet when pedaling.

[0066] Optionally, a seat lower tube 1-4 is provided at the middle and rear end of the frame 1; a seat upper tube 28 is provided at the upper end of the seat lower tube 1-4; a seat 29 is provided at the upper end of the seat upper tube 28; a first direction control device is provided at the upper end of the seat upper tube 28; the first direction control device includes: a locking ring 44 fixedly connected to the upper end of the seat upper tube 28, a lower transverse axis 45 fixedly connected to the lower end of the locking ring 44, a pair of direction arms 48 hinged at both ends of the lower transverse axis 45, an upper transverse tube 46 fixedly connected to the upper end of the locking ring 44, a positioning member 49 hinged to the upper transverse tube 46 through a small transverse axis 47, a first tension spring 50 connected between the positioning member 49 and the seat upper tube 28, and two left and right steel wires 51 connected between the steering wheel bracket 2 and the pair of direction arms 48.

[0067] Optionally, a wire locking and adjustment mechanism 52 is provided at the front end of the steering arm 48; a pair of second fixed pulleys 53 are provided on both sides of the rear end of the frame 1; the left steel wire cord 51 passes through the left second fixed pulley 53 and is connected between the front end of the left steering arm 48 and the left shoulder of the steering wheel bracket 2, and the right steel wire cord 51 passes through the right second fixed pulley 53 and is connected between the front end of the right steering arm 48 and the right shoulder of the steering wheel bracket 2; a first waist guard 54 is provided at the upper end of the steering arm 48, and the first waist guard 54 corresponds to the waist of the rider; when the left first waist guard 54 is squeezed backward with the waist, the rear end of the left steering arm 48 swings downward, the front end of the left steering arm 48 swings upward, and the left shoulder of the steering wheel bracket 2 is pulled backward through the connected steel wire cord 51, driving the steering wheel 3 to turn left; conversely, when the right first waist guard 54 is squeezed backward with the waist, the steering wheel 3 turns right.

[0068] Optionally, the positioning member 49 includes a small swing arm 49-1 hinged to the upper cross tube 46 through a small cross shaft 47, and a transverse pressure rod 49-2 fixed to the free end of the small swing arm 49-1; the transverse pressure rod 49-2 presses on the upper rear end of a pair of direction arms 48; the first tension spring 50 tends to make the transverse pressure rod 49-2 press the rear ends of the left and right direction arms 48; when the transverse pressure rod 49-2 presses the rear ends of the left and right direction arms 48 at the same time, the spring force of the first tension spring 50 acts on the left and right shoulders of the steering wheel bracket 2 at the same time through the left and right steel wires 51, and the steering wheel 3 faces straight ahead; therefore, when the steering wheel 3 turns slightly to the left (right) while moving forward, the right (left) side steel wire 51 will pull the front end of the right (left) side steering arm 48 to swing downward, causing the right (left) side The rear end of the side steering arm 48 swings upward against the first tension spring 50. At this time, the spring force of the first tension spring 50 will all act on the rear end of the right (left) side steering arm 48, and act on the right (left) shoulder of the steering wheel bracket 2 through the right (left) side steel wire cord 51, preventing the steering wheel 3 from turning left (right); therefore, the steering wheel 3 has a strong resistance to external interference that causes its direction to change (such as uneven road surface, encountering small stones, etc.) and a strong force to automatically maintain its direction when moving. This makes it easy to control the direction with the waist. When the direction of travel needs to be adjusted, the waist can be used to squeeze the first waist guard 54 on the corresponding side backward; alternatively, the waist always rests on the left and right first waist guards 54, and when the direction of travel needs to be adjusted, the pressure ratio of the waist on the left and right first waist guards 54 can be adjusted.

[0069] Optionally, a seat lower tube 1-4 is provided at the middle and rear end of the frame 1; a seat upper tube 28 is provided at the upper end of the seat lower tube 1-4; a seat 29 is provided at the upper end of the seat upper tube 28; a second direction control device is provided at the upper end of the seat upper tube 28; the second direction control device includes: a longitudinal rod 55 fixedly connected to the upper end of the seat upper tube 28, a direction control arm 56 hinged on the longitudinal rod 55, a third fixed pulley 57 provided on the left side of the rear end of the frame 1, a steel wire cord 51 connected between the direction control arm 56 and the left shoulder of the steering wheel bracket 2 through the third fixed pulley 57, a second tension spring 58 connected between the direction control arm 56 and the seat 29, and a third tension spring 59 connected between the right shoulder of the steering wheel bracket 2 and the frame 1.

[0070] Optionally, the direction control arm 56 includes a hinged tube 56-1 sleeved on the longitudinal rod 55, a right small arm 56-2 fixed to the right side of the hinged tube 56-1, and a control arm 56-3 fixed to the upper end of the hinged tube 56-1; the second tension spring 58 is connected between the right end of the right small arm 56-2 and the rear end of the seat 29.

[0071] Optionally, a wire locking and adjustment mechanism 52 is provided at the right end of the right forearm 56-2; the steel wire cord 51 is connected between the right end of the right forearm 56-2 and the left shoulder of the steering wheel bracket 2 through a third fixed pulley 57; the tension applied by the second tension spring 58 to the left shoulder of the steering wheel bracket 2 through the direction control arm 56 and the steel wire cord 51 corresponds to the tension applied by the third tension spring 59 to the right shoulder of the steering wheel bracket 2, and the resultant force tends to make the steering wheel bracket 2 face straight ahead; a second waist guard 60 is provided at the upper end of the direction control arm 56, and the second waist guard 60 corresponds to the waist or back of the rider; when the second waist guard 60 is swung to the left, the tension applied by the direction control arm 56 and the second tension spring 58 to the left shoulder of the steering wheel bracket 2 through the steel wire cord 51 is greater than the tension applied by the third tension spring 59 to the right shoulder of the steering wheel bracket 2, and the steering wheel 3 turns left; conversely, when the second waist guard 60 is swung to the right, the steering wheel 3 turns right.

[0072] Optionally, the driving wheel 9 and the driving wheel shaft 8 are arranged at the front end of the frame 1, and the frame head tube 1-1 is arranged at the rear end of the frame 1; a seat lower tube 1-4 is arranged at the middle and rear end of the frame 1; a seat upper tube 28 is arranged at the upper end of the seat lower tube 1-4, and a seat 29 is arranged at the upper end of the seat upper tube 28; a third direction control device is arranged at the middle and rear end of the frame 1, and the third direction control device includes: a direction lower tube 1-5 arranged behind the seat lower tube 1-4, a direction upper tube 41 hinged in the direction lower tube 1-5, a direction rod 43 fixed to the top of the direction wheel bracket 2, and a direction control rod 42 fixed to the lower end of the direction tube 41; wherein, the end of the direction rod 43 is bent upward to form a vertical cylinder 43-1; the end of the direction control rod 42 The end is provided with a long strip bayonet 42-1, the opening width of the long strip bayonet 42-1 is adapted to the diameter of the vertical cylinder 43-1, and the vertical cylinder 43-1 extends into the long strip bayonet 42-1; a cross bar 41-1 is provided on the top of the direction tube 41, and a third waist guard 41-2 is provided at both ends of the cross bar 41-1, and the third waist guard 41-2 is located at the upper rear of the seat 29 corresponding to the rider's waist; thus, the forward direction can be controlled by controlling the third waist guard 41-2 by the waist: when the waist pushes the left (right) side third waist guard 41-2 backward, the direction control lever 42 moves the vertical cylinder 43-1, drives the direction wheel bracket 2 to rotate in the clockwise (counterclockwise) direction, the direction wheel 9 turns right (left), and the vehicle turns left (right).

[0073] The main advantages of this application are:

[0074] 1. Between the pedal device and the drive wheel 9, there is provided one or two transmission mechanisms for driving the drive wheel 9 to rotate by stepping on the pedal device; each transmission mechanism includes a rope ring 13 hinged to the drive wheel shaft 8 or the drive wheel 9 and capable of unidirectionally transmitting the drive wheel shaft 8 or the drive wheel 9 in the forward direction, a rope 14 connected between the rope ring 13 and the pedal device and capable of winding around the rope ring 13, and a set of return devices connected between the rope ring 13 and the frame 1 and capable of driving the rope ring 13 to rotate idly in the opposite direction, thereby allowing the rope 14 to cyclically wind around the rope ring 13; thereby, a pedaling method similar to stepping is used to replace the full-rotation pedaling method in bicycle riding, reducing the amount of leg movement and alleviating the load on the knee joint; half of its pedaling stroke is the effective stroke, which is about one-quarter higher than that of a bicycle, and the riding cadence can be increased by 80% compared with a bicycle, and the pedaling stroke when the knee joint is closest to being straight is the effective stroke, so that the leg power can be perfectly released;

[0075] 2. In a preferred embodiment, the free end of the pedal rod 6 faces rearward. When the free end of the pedal rod 6 swings upward to the highest point, the free end of the pedal rod 6 approaches the rope ring 13. The pedaling force acts directly on the drive wheel 9 through the rope ring 14 and the rope ring 13. This greatly reduces the load on the frame 1 and also reduces the rigidity requirement of the frame 1, which helps to reduce the weight of the entire vehicle.

[0076] 3. In the above preferred embodiment, the seat 29 is arranged directly above or above the rear of the drive wheel shaft 8; this can significantly reduce the length of the entire vehicle without affecting its performance;

[0077] 4. In the above preferred embodiment, the pedal rod 6 is approximately 35 cm long. During a pedaling cycle, when the free end of the pedal rod 6 swings from the highest pedaling point to the lowest pedaling point, the linear distance is 25 cm. The swing angle of the pedal rod 6 is approximately 42 degrees. The average torque during the entire pedaling process is approximately 97% of the maximum torque, which is much higher than the approximately 90% of a bicycle.

[0078] 5. In the above preferred embodiment, the free end of the pedal rod 6 is provided with two front and rear footrests 7, and the front and rear footrests 7 correspond to the sole and heel of the foot respectively; in the first two-thirds of pedaling, the heel is mainly used to exert force, which can obtain a larger torque. When the knee joint is about to straighten, the ankle joint exerts force and the sole of the foot completes the last one-third of the stroke; in this way, the foot lift height in each pedaling stroke can be greatly reduced, so that a higher pedaling frequency can be easily obtained; compared with a bicycle, the pedaling frequency can be increased by more than 80% (and when standing and riding, the average torque is 97% of the maximum torque continuously output throughout the whole process; when riding a bicycle while standing, the average torque is about 70% of the maximum torque); and thus the bicycle automatically has two driving gears: when going uphill, whenever the knee joint is about to straighten, the leg is immediately lifted to start the next pedaling stroke, and the heel is used to exert force throughout the whole process, and the maximum torque is always used to pedal to obtain greater forward momentum;

[0079] 6. In the above preferred embodiment, a second rope interface 6-3 is provided in the longitudinal middle, front or rear middle portion of the inner side surface of the pedal rod 6, and the end of the rope 14 is connected to the second rope interface 6-3; a gear-engaging protrusion 6-14 is provided between the second rope interface 6-3 and the free end of the pedal rod 6; the lateral position of the gear-engaging protrusion 6-14 corresponds to the rope 14, and the top of the gear-engaging protrusion 6-14 is a sloped surface; when the rope 14 is located above the gear-engaging protrusion 6-14, it is a low-speed gear, and the rope 14 does not contact the gear-engaging protrusion 6-14 at this time; when the rope 14 is hung below the gear-engaging protrusion 6-14, it is a high-speed gear; when the high-speed is adjusted to a low speed, when the free end of the pedal rod 6 is at a lower point, the rope 14 is dialed with the inside of the sole of the foot, so that the rope 14 slides out from the bottom of the gear-engaging protrusion 6-14 to the inside, thereby When the pedals are turned on and off, the pedals 14 are released from the engagement groove 6 and the pedals 14 are released from the engagement groove 6. When the pedals are turned on and off, the pedals 14 are released from the engagement groove 6 and the pedals 14 are released from the engagement groove 6 and the pedals 14 are released from the engagement groove 6.

[0080] 7. In the above preferred embodiment, the free end of the pedal rod 6 is fixedly connected to a friction inner ring 103, and a friction middle ring 104 is sleeved on the friction inner ring 103, which can rotate around the friction inner ring 103 but cannot move left and right relative to the friction inner ring 103. A rubber outer ring 105 is fixedly connected to the outer circumferential surface of the friction middle ring 104; when the free end of the pedal rod 6 swings downward to the lowest point, the rubber outer ring 105 touches the road surface and rolls along the road surface; when the rubber outer ring 105 rolls along the road surface, sliding friction is generated between the friction middle ring 104 and the friction inner ring 103, generating forward resistance; because the whole body weight acts on the friction middle ring 104 and the rubber outer ring 105 through the free end of the pedal rod 6 and the friction inner ring 103, and directly acts on the ground through the friction middle ring 104 and the rubber outer ring 105, although the friction middle ring 104 and the rubber outer ring 105 are very small and very light, they can have an excellent braking effect and can replace the front and rear brake systems of a bicycle;

[0081] 8. In another preferred embodiment, the frame 1 is provided with a pair of guide grooves 1-14 at the front ends of the drive wheel shaft 8. The pedal device consists of two left and right pedals 70, each of which is provided with a plurality of first small pulleys 73. The first small pulleys 73 extend into the guide grooves 1-14, so that the pedals 70 and the first small pulleys 73 can move up and down along the trajectory determined by the guide grooves 1-14; the ends of the winding ropes 14 are connected to the pedals 70 on the same side; the pedaling method adopts a linear pedaling method, which does not suffer from the torque shortening problem of rotary pedaling. The energy loss comes only from the rolling friction generated by the first small pulleys 73 rolling along the guide grooves 1-14, and the energy utilization rate exceeds 98%. The pedaling force also acts directly on the drive wheel 9;

[0082] 9. In a preferred embodiment, a speed regulating mechanism is further provided, comprising: a slide rail 6-12 disposed on the foot lever 6 or the rope connecting arm 6-9, a slide tube 19 sleeved on the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gear positions of the slide rail 6-12, and a return torsion spring 21 for placing the positioning switch 20 in a closed state; the slide tube 19 weighs 3-9 grams when made of aluminum alloy, and energy loss is minimal; simply by touching the positioning switch 20, the slide tube 19 moves along the slide rail 6-12, and the gear adjustment process is automatically completed, which is easy to operate and, in particular, will not break or get dirty;

[0083] 10. In another preferred embodiment, the foot pedal 7 is hinged to the free end of the foot lever 6 via a gear shifter 85. The foot pedal 7 also has two adjustable gear positions, high and low, enabling extremely flexible switching between low and high gears.

[0084] 11. In a preferred embodiment, a second transverse tube 1-24 is provided below the center axis tube 1-2; a second foot brake device is provided below and behind the second transverse tube 1-24, comprising: a second brake arm 101 with a free end pointing rearward and downward, a brake pad 102 mounted on the inner side of the free end of the second brake arm 101, and a brake return spring 64 connected between the second brake arm 101 and the frame 1; the upper end of the second brake arm 101 is hinged to the frame 1; a top tube 101-2 is provided at the hinged end of the second brake arm 101, and the brake return spring 64 tends to swing the free end of the second brake arm 101 pointing rearward and downward upward, so that the upper end of the top tube 101-2 is pressed forward against the center axis tube 1-2; when the top tube 101 When the upper end of 1-2 is close to the middle axis tube 1-2, the free end of the second brake arm 101 points to the driving wheel steel rim 9-2 close to the ground, and the brake pad 102 is located 2-8 mm above the driving wheel steel rim 9-2; a cross bar 101-3 is provided on the outer side of the free end of the second brake arm 101. When the free end of the pedal rod 6 swings downward to a lower point, it pushes the cross bar 101-3 downward, causing the free end of the second brake arm 101 to swing downward and the brake pad 102 to press the driving wheel steel rim 9-2 downward, automatically completing the braking process; the above design ensures that it will not cause the brake pad to be worn; when braking suddenly, the whole body weight can be directly applied to the ground through the brake pad and the driving wheel steel rim 9-2 close to the ground, so that sudden braking can be smooth;

[0085] 12. In another preferred embodiment, a transverse tube 1-9 is provided at the front lower part of the middle axis tube 1-2, and a gripping arm 32 with a free end pointing to the rear lower part is hinged to the transverse tube 1-9 through a third transverse axis 39 and a pair of fourth bearings 81 installed in the transverse tube 1-9; the free end of the gripping arm 32 is fixedly connected to the third wheel axle 40, and the third wheel axle 40 is hinged with left and right gripping wheels 35, and the lateral positions of the left and right gripping wheels correspond to the left and right pedal rods 6 respectively; when the free end of the pedal rod 6 is stepped on to the set low point, the pedal rod 6 will press on the gripping wheel 35, preventing the gripping wheel 35 from rolling smoothly, and automatically completing the braking process; it is used to replace the braking system of a bicycle; and because the whole body weight can be pressed on the gripping wheel 35 and directly act on the ground through the gripping wheel 35, this will enable very smooth emergency braking;

[0086] 13. In the preferred embodiment described above, a strong spring 36 is connected between the frame 1 and the gripping arm 32. The strong spring 36 tends to swing the free end of the gripping arm 32, which points rearward and downward, downward. Thus, during riding, the free end of the gripping arm 32, together with the drive wheel 9 and the steering wheel 3, bears pressure via the strong spring 36. The gripping wheel 35 can bear approximately one-third of the total weight of the vehicle and the person. Because the longitudinal position of the gripping wheel 35 is precisely at the center of the forces (the force applied by pedaling and the gravity applied by the seat), the load on the frame 1 is greatly reduced. Furthermore, because the gripping wheels 35 are arranged on both sides of the frame 1 at a predetermined lateral spacing, the frame 1 provides for improved riding stability.

[0087] 14. In the above preferred embodiment, with the added benefit of better riding stability, a first direction control device is provided to replace the handlebars, comprising: a locking ring 44 fixed to the upper end of the saddle upper tube 28, a lower transverse shaft 45 fixed to the lower end of the locking ring 44, a pair of direction arms 48 hinged at both ends of the lower transverse shaft 45, an upper transverse tube 46 fixed to the upper end of the locking ring 44, a positioning member 49 hinged to the upper transverse tube 46 via a small transverse shaft 47, a first tension spring 50 connected between the positioning member 49 and the saddle upper tube 28, and two left and right steel wires 51 connected between the steering wheel bracket 2 and the pair of steering arms 48; a first waist guard 54 is provided at the upper end of the steering arm 48, The first waist guard 54 corresponds to the rider's waist or back; when the left first waist guard 54 is squeezed backward with the waist, the rear end of the left steering arm 48 swings downward, the front end 48-1 of the left steering arm swings upward, and the left shoulder of the steering wheel bracket 2 is pulled backward through the connected steel wire 51, driving the steering wheel 3 to turn left; the positioning member 49 automatically makes the driving direction face straight ahead, and has strong resistance to external force interference that causes its direction to change (such as uneven road surface, encountering small stones, etc.) and the ability to automatically maintain the direction straight ahead during driving, which makes it easy to control the direction with the waist. When the driving direction needs to be adjusted, the waist can be squeezed backward with the waist to the first waist guard 54 on the corresponding side.

[0088] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiment below. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present application. In the accompanying drawings:

[0090] FIG1 is a schematic diagram of the overall structure of Example 1;

[0091] Figure 2 is a right side view of Figure 1;

[0092] Figure 3 is a palace view of Figure 1;

[0093] FIG4 is a rear view of FIG1;

[0094] FIG5 is a partial enlarged view of FIG1 with some structures omitted;

[0095] FIG6 is a schematic structural diagram of FIG5 with some structures omitted;

[0096] Figures 7 and 8 are partial enlarged views of Figure 6 with some structures omitted;

[0097] FIG9 is a partial enlarged view of FIG8 with some structures omitted;

[0098] FIG10 is an exploded view of a portion of the structure in FIG9

[0099] Figure 11 is a schematic structural diagram of the frame in Figure 1;

[0100] FIG12 is a schematic structural diagram of the right side of the rope winding ring in FIG1 and two circles of steel balls disposed at both ends thereof;

[0101] Figure 13 is a palace view of Figure 12;

[0102] FIG14 is a rear view of FIG12;

[0103] Figure 15 is a right side view of Figure 12;

[0104] Figures 16 and 17 are schematic structural diagrams of the right ratchet in Figure 1;

[0105] FIG18 is a schematic diagram of the overall structure of Example 2;

[0106] FIG19 is a partial enlarged view of FIG18 with some structures omitted;

[0107] FIG20 is a partial enlarged view of a portion of the structure in FIG19;

[0108] FIG21 is a schematic structural diagram of the gripping arm in FIG20;

[0109] Figure 22 is a right side view of Figure 18;

[0110] FIG23 is a rear view of FIG18;

[0111] FIG24 is a schematic structural diagram of the frame in FIG18;

[0112] Figure 25 is a schematic structural diagram of the pedal rod in Figure 18;

[0113] FIG26 is a schematic structural diagram of the positioning switch in FIG18;

[0114] FIG27 is a schematic structural diagram of the slide tube in FIG18;

[0115] FIG28 is a schematic diagram of the overall structure of Example 3;

[0116] FIG29 is a partial enlarged view of FIG28 with some structures omitted;

[0117] FIG30 is a partial enlarged view of FIG29 with some structures omitted;

[0118] Figure 31 is a top view of Figure 30;

[0119] FIG32 is a schematic structural diagram of the frame in FIG28;

[0120] Figure 33 is a right side view of Figure 28;

[0121] FIG34 is a top view of FIG28 with the seat omitted;

[0122] Figure 35 is a rear view of Figure 28;

[0123] FIG36 is a partial enlarged view of FIG28 when the free end of the pedal rod is swung downward to press on the grip wheel;

[0124] FIG37 is a schematic diagram of the overall structure of Example 4;

[0125] FIG38 is a partial enlarged view of part of the structure in FIG37;

[0126] FIG39 is a partial enlarged view of the gripping arm and the third wheel axle in FIG38;

[0127] Figure 40 is a right side view of Figure 37;

[0128] FIG41 is a top view of FIG37 with some structures omitted;

[0129] Figure 42 is a rear view of Figure 37;

[0130] FIG43 is a schematic structural diagram of the first direction control device in FIG37;

[0131] FIG44 is an exploded view of FIG43;

[0132] FIG45 is a schematic structural diagram of the steering arm and waist guard in FIG43;

[0133] FIG46 is a schematic structural diagram of the locking ring, lower horizontal shaft, and upper horizontal tube in FIG43;

[0134] FIG47 is a schematic structural diagram of the positioning member in FIG43;

[0135] FIG48 is a schematic diagram of the overall structure of Example 5;

[0136] FIG49 is a schematic structural diagram of the gripping arm and the third wheel axle in FIG48;

[0137] FIG50 is a schematic structural diagram of the first brake arm in FIG48;

[0138] Figure 51 is a right side view of Figure 48;

[0139] Figure 52 is a right side view of the frame in Figure 48;

[0140] Figures 53 and 54 are schematic diagrams of the overall structure of Example 6;

[0141] FIG55 is a schematic structural diagram of the second direction control device in FIG53;

[0142] Figure 56 is a schematic structural diagram of the upper tube and longitudinal rod of the seat in Figure 55;

[0143] FIG57 is a schematic structural diagram of the direction control arm in FIG55;

[0144] Figure 58 is a left side view of Figure 53;

[0145] Figure 59 is a rear view of Figure 53;

[0146] FIG60 is a schematic diagram of the overall structure of Example 7;

[0147] FIG61 is a schematic structural diagram of the gripping arm in FIG60;

[0148] Figure 62 is a schematic structural diagram of the frame in Figure 60;

[0149] Figure 63 is a right side view of Figure 60;

[0150] FIG64 is a top view of FIG60 with some structures omitted;

[0151] Figure 65 is a rear view of Figure 60;

[0152] FIG66 is a partial enlarged view of Example 7;

[0153] FIG67 is a schematic diagram of the overall structure of Example 8;

[0154] FIG68 is a schematic structural diagram of the gripping arm and the third wheel axle in FIG67;

[0155] FIG69 is a schematic structural diagram of the vehicle frame in FIG67;

[0156] Figure 70 is a right side view of Figure 67;

[0157] FIG71 is a perspective view of FIG67;

[0158] Figure 72 is a rear view of Figure 67;

[0159] FIG73 is a schematic diagram of the overall structure of Example 9;

[0160] FIG74 is a schematic structural diagram of the first bidirectional pedal in FIG73;

[0161] FIG75 is a partial enlarged view of part of the structure in FIG73;

[0162] FIG76 is a partial enlarged view of part of the structure in FIG75;

[0163] FIG77 is a schematic structural diagram of the rope winding ring in FIG76;

[0164] Figure 78 is a right side view of Figure 73;

[0165] FIG79 is a schematic structural diagram of the vehicle frame in FIG73;

[0166] Figure 80 is a top view of Figure 73;

[0167] FIG81 is a schematic diagram of the overall structure of the tenth embodiment;

[0168] FIG82 is a partial enlarged view of FIG81 with some structures omitted;

[0169] FIG83 is a partial enlarged view of FIG82 with some structures omitted;

[0170] FIG84 is a partial enlarged view of FIG83 with some structures omitted;

[0171] FIG85 is an exploded view of a portion of the structure in FIG82;

[0172] FIG86 is a schematic structural diagram of the ratchet, pawl, rope winding ring, and steel ball in FIG85;

[0173] FIG87 is a schematic diagram of the structure of the rope ring and the steel ball in FIG86;

[0174] FIG88 is a schematic structural diagram of the rope winding ring in FIG87;

[0175] FIG89 is a bottom view of FIG87;

[0176] Figure 90 is a schematic structural diagram of the frame and the first fixed pulley in Figure 81;

[0177] Figure 91 is a right side view of Figure 81;

[0178] Figure 92 is a top view of Figure 81;

[0179] Figure 93 is a rear view of Figure 81;

[0180] FIG94 is a schematic diagram of the overall structure of Example 11;

[0181] Figure 95 is a partial enlarged view of Figure 94;

[0182] FIG96 is a schematic structural diagram of the second bidirectional pedal and the second small pulley in FIG95;

[0183] Figure 97 is a top view of Figure 96;

[0184] Figure 98 is a right side view of Figure 94;

[0185] Figure 99 is a bottom view of Figure 94;

[0186] FIG100 is a schematic structural diagram of the vehicle frame in FIG94;

[0187] Figure 101 is a right side view of Figure 100;

[0188] FIG102 is a schematic diagram of the overall structure of the twelfth embodiment;

[0189] 103 and 104 are schematic cross-sectional views of a portion of the structure in FIG. 102 ;

[0190] FIG105 is a top view of FIG103;

[0191] FIG106 is a schematic structural diagram of the small slide tube and the third small pulley in FIG103;

[0192] Figure 107 is a schematic diagram of the structure of the small slide tube in Figure 106;

[0193] FIG108 is a schematic structural diagram of the annular pedal in FIG103;

[0194] FIG109 is a right side view of FIG102;

[0195] FIG110 is a schematic structural diagram of the vehicle frame in FIG102;

[0196] FIG111 is a right side view of FIG110;

[0197] FIG112 is a top view of FIG102;

[0198] 113 and 114 are schematic diagrams of the overall structure of the thirteenth embodiment;

[0199] FIG115 is a perspective view of FIG113;

[0200] FIG116 is a schematic diagram of the overall structure of the fourteenth embodiment;

[0201] FIG117 is a partial enlarged view of part of the structure in FIG116;

[0202] Figure 118 is a right side view of Figure 116;

[0203] FIG119 is a schematic structural diagram of the vehicle frame in FIG116;

[0204] FIG120 is a schematic structural diagram of the footrest and foot pedal in FIG117;

[0205] FIG121 is a top view of FIG120;

[0206] FIG122 is a schematic diagram of the overall structure of the fifteenth embodiment;

[0207] FIG123 is a partial enlarged view of part of the structure in FIG122;

[0208] FIG124 is an exploded view of a portion of the structure in FIG123;

[0209] Figure 125 is a right side view of Figure 122;

[0210] Figure 126 is a top view of Figure 122;

[0211] FIG127 is an AA cross-sectional view of a portion of the structure in FIG126;

[0212] FIG128 is a partial enlarged view of part of the structure in FIG123;

[0213] FIG129 is a schematic diagram of the structure of the positioning switch in FIG123;

[0214] FIG130 is a schematic diagram of the overall structure of the sixteenth embodiment;

[0215] Figure 131 is a right side view of Figure 130;

[0216] FIG132 is a right side view of FIG130 when the free end of the pedal rod is at the pedaling low point;

[0217] FIG133 is a partial enlarged view of FIG130 with some structures omitted;

[0218] FIG134 is a schematic structural diagram of the first brake arm in FIG130;

[0219] 135 and 136 are schematic diagrams of the overall structure of the seventeenth embodiment;

[0220] FIG137 is a schematic structural diagram of the shifter in FIG135;

[0221] Figure 138 is a right side view of Figure 135;

[0222] Figure 139 is a right side view of Figure 136;

[0223] FIG140 is a schematic diagram of the structure of FIG135 when the free end of the pedal rod is located at the pedaling low point;

[0224] Figure 141 is a right side view of Figure 140;

[0225] FIG142 is a schematic structural diagram of the pedal lever in FIG135;

[0226] Figure 143 is a right side view of Figure 142;

[0227] Figure 144 is a top view of Figure 142;

[0228] 145 and 146 are schematic diagrams of the overall structure of the eighteenth embodiment;

[0229] Figure 147 is a right side view of Figure 145;

[0230] Figure 148 is a right side view of Figure 146;

[0231] FIG149 is a schematic structural diagram of the pedal lever in FIG145;

[0232] Figure 150 is a right side view of Figure 149;

[0233] Figure 151 is a top view of Figure 149;

[0234] FIG152 is a schematic diagram of the overall structure of the nineteenth embodiment;

[0235] FIG153 is a schematic diagram of the structure of the coiled rope in FIG152;

[0236] Figure 154 is a right side view of Figure 152;

[0237] Figure 155 is a rear view of Figure 152;

[0238] FIG156 is a top view of FIG152 with some structures omitted;

[0239] FIG157 is a schematic diagram of the structure of the rope winding ring in FIG152;

[0240] Figure 158 is a top view of Figure 157;

[0241] FIG159 is a schematic structural diagram of the right footrest in FIG152;

[0242] Figure 160 is a top view of Figure 159;

[0243] FIG161 is a schematic diagram of the overall structure of the twenty-second embodiment;

[0244] Figure 162 is a right side view of Figure 161;

[0245] FIG163 is a top view of FIG161 with some structures omitted;

[0246] FIG164 is a partial enlarged view of FIG161 with some structures omitted;

[0247] FIG165 is a partial enlarged view of FIG164 when viewed from another angle;

[0248] FIG166 is a partial enlarged view of FIG165 with some structures omitted;

[0249] FIG167 is a schematic diagram of the structure of the positioning switch in FIG166;

[0250] Figure 168 is a schematic diagram of the structure of the slide tube in Figure 166;

[0251] FIG169 is a schematic diagram of the structure of the pedal lever and the switch shaft in FIG164;

[0252] FIG170 is a schematic diagram of the overall structure of Example 21;

[0253] Figure 171 is a right side view of Figure 170;

[0254] FIG172 is a top view of FIG170 with some structures omitted;

[0255] FIG173 is a schematic diagram of the overall structure of embodiment 21 when viewed from another angle;

[0256] FIG174 is a partial enlarged view of FIG173 with some structures omitted;

[0257] FIG175 is a schematic structural diagram of the right footrest in FIG170;

[0258] Figure 176 is a right side view of Figure 175;

[0259] FIG177 is a schematic diagram of the structure of the rope winding ring in FIG170;

[0260] Figure 178 is a bottom view of Figure 177;

[0261] Figure 179 is a schematic diagram of the structure of the frame in Figure 170;

[0262] FIG180 is a schematic diagram of the overall structure of Example 22;

[0263] FIG181 is a top view of FIG180 with some structures omitted;

[0264] FIG182 is a schematic diagram of the overall structure of Example 23;

[0265] Figure 183 is a right side view of Figure 182;

[0266] FIG184 is a top view of FIG182 with some structures omitted;

[0267] FIG185 is a schematic diagram of the overall structure of Example 24;

[0268] FIG186 is a perspective view of FIG185 with some structures omitted;

[0269] Figure 187 is a right side view of Figure 185;

[0270] FIG188 is a partial enlarged view of FIG185 with some structures omitted;

[0271] FIG189 is a partial enlarged view of FIG188 with some structures omitted;

[0272] FIG190 is a schematic structural diagram of the pedal and the first small pulley in FIG189;

[0273] Figure 191 is a top view of Figure 190;

[0274] Figures 192 and 193 are schematic diagrams of the structure of the rope winding ring on the right side of Figure 189;

[0275] Figure 194 is a rear view of Figure 193;

[0276] Figure 195 is a schematic diagram of the structure of the frame in Figure 185;

[0277] Figures 196 and 197 are schematic diagrams of the overall structure of embodiment 25;

[0278] Figure 198 is a right side view of Figure 196;

[0279] FIG199 is a partial enlarged view of FIG196 with some structures omitted;

[0280] FIG200 is a partial enlarged view of FIG199 with some structures omitted;

[0281] FIG201 is an exploded view of FIG199 with some structures omitted;

[0282] FIG202 is a schematic diagram of the structure of the second brake arm and brake pad in FIG196;

[0283] FIG203 is a schematic structural diagram of the right footrest in FIG196;

[0284] FIG204 is a schematic diagram of the overall structure of Example 26;

[0285] FIG205 is a schematic structural diagram of the right footrest in FIG204;

[0286] FIG206 is a partial enlarged view of FIG204 with some structures omitted;

[0287] Figures 207 and 208 are partial enlarged views of Figure 206 with some structures omitted;

[0288] FIG209 is an exploded view of FIG207;

[0289] Figure 210 is a right side view of Figure 204;

[0290] FIG211 is a top view of FIG204 with some structures omitted;

[0291] Figure 212 is a rear view of Figure 204;

[0292] FIG213 is a schematic diagram of the structure of the inner ring of the winding rope in FIG204;

[0293] FIG214 is a schematic diagram of the structure of the rope winding ring in FIG204;

[0294] Figure 215 is a rear view of Figure 214;

[0295] FIG216 is a schematic diagram of the structure of the slide tube in FIG208 with the rope reel joint and joint shaft omitted;

[0296] FIG217 is a schematic diagram of the overall structure of Example 27;

[0297] Figure 218 is a right side view of Figure 217;

[0298] FIG219 is a perspective view of FIG217 with some structures omitted;

[0299] FIG220 is a partial enlarged view of FIG217 with some structures omitted;

[0300] FIG221 is a partial enlarged view of FIG220 with some structures omitted;

[0301] FIG222 is an exploded view of FIG221 with part of the structure omitted;

[0302] FIG223 is a partial enlarged view of FIG220 with some structures omitted;

[0303] Figure 224 is a right side view of Figure 223;

[0304] FIG225 is a schematic diagram of the structure of the rope winding ring in FIG223;

[0305] FIG226 is a schematic diagram of the structure of the inner ring of the winding rope in FIG223;

[0306] FIG227 is a schematic diagram of the overall structure of Example 28;

[0307] Figure 228 is a right side view of Figure 227;

[0308] FIG229 is a left side view of FIG227 with the winding rope omitted and the free end of the pedal rod located at the pedaling low point;

[0309] FIG230 is a partial enlarged view of FIG227 with some structures omitted;

[0310] FIG231 is an exploded view of FIG230 with some structures omitted;

[0311] Figure 232 is a schematic structural diagram of the pedal rod in Figure 231.

[0312] FIG233 is a schematic diagram of the overall structure of Example 29;

[0313] Figure 234 is a right side view of Figure 233;

[0314] FIG235 is a perspective view of FIG233 with some structures omitted;

[0315] FIG236 is a partial enlarged view of FIG233 with some structures omitted;

[0316] FIG237 is a partial enlarged view of FIG236 with some structures omitted;

[0317] Figure 238 is a schematic structural diagram of the one-way bearing in Figure 237.

[0318] Explanation of the accompanying drawings: 1. Frame, 1-1. Frame head tube, 1-2. Middle axis tube, 1-3. Pulley shaft, 1-4. Seat down tube, 1-5. Steering down tube, 1-6. Grip arm base, 1-7. Frame longitudinal beam, 1-8. Drive wheel mounting arm, 1-9. Second middle axis tube, 1-10. Limit rod, 1-11. Foot brake horizontal axis, 1-12. Cross beam, 1-13. Guide leaf spring, 1-14. Guide groove, 1-16. Limit ring, 1-17. Vertical tube, 1-18. Limit plate, 1-19. Pedal base, 1-20. Limit groove, 1-21. Vertical slide rail, 1-22. Pulley groove, 1-23. Brake base, 1-24. Second cross axis tube, 1-25. Tail rod, 2. Steering wheel bracket, 3. Steering wheel , 4. Handlebar, 5. First pedal axis, 6. Pedal rod, 6-1. Extrusion rod, 6-2. Eight-shaped extrusion piece, 6-3. Second rope winding interface, 6-4. Arc guard, 6-5. Arc corner, 6-6. Arc recess, 6-7. Hinge piece, 6-8. Cross tube, 6-9. Rope connecting arm, 6-10. Eighth rope winding interface, 6-11. Middle cross tube, 6-12. Slide rail, 6-13. Locking recess, 6-14. Gearing protrusion, 6-15. Ring, 6-16. Block, 7. Pedal, 8. Drive wheel shaft, 9. Drive wheel, 9-1. Ratchet sleeve, 9-2. Drive wheel steel ring, 10. Ratchet, 10-1. Ratchet teeth, 10-2. Ratchet side wall, 10-3. Sealing edge, 11. Pawl, 12. Ring shaped spring, 13, rope ring, 13-1, first ratchet hole, 13-2, spiral groove, 13-3, first rope interface, 13-4, soft wire interface, 13-5, bead bowl, 13-6, sealing wall, 13-7, soft wire winding area, 13-8, winding disk, 13-9, rope winding area, 13-10, second ratchet tooth, 13-10-1, second ratchet tooth front, 13-10-2, second ratchet tooth inclined surface, 13-11, soft wire stop edge, 14, rope, 14-1, chain, 14-2, hard steel wire, 15, first fixed pulley, 16, soft wire, 17, return spring, 19, slide tube, 19-1, third rope interface, 19-2, inverted eight-shaped arc guard, 19-3, rope joint, 19- 4. Joint shaft, 19-5. Anti-slip spike, 20. Position switch, 20-1. Limit stop, 20-2. Lever, 20-3. Lock tongue, 21. Reset torsion spring, 22. Switch shaft, 23. First bearing, 24. Steel ball, 25. Bead holder, 26. Outer bowl, 27. Two-way inner bowl, 28. Seat top tube, 29. Seat, 30. Folding buckle, 31. First transverse axis, 32. Grip arm, 33. First wheel axle, 34. Friction wheel, 35. Grip wheel, 36. Power spring, 37. Second transverse axis, 38. Second wheel axle, 39. Third transverse axis, 40. Third wheel axle, 41. Direction tube, 41-1. Transverse bar, 41-2. Third waist guard, 42. Steering control lever, 42-1. Long strip bayonet, 43. Steering lever,43-1, vertical cylinder, 44, locking ring, 45, lower horizontal axis, 46, upper horizontal tube, 47, small horizontal axis, 48, steering arm, 49, positioning piece, 49-1, small swing arm, 49-2, transverse pressure rod, 50, first tension spring, 51, steel wire, 52, steel wire locking and adjustment mechanism, 53, second fixed pulley, 54, first waist guard, 55, longitudinal rod, 56, steering control arm, 56-1, articulated tube, 56-2, right forearm, 56-3, control arm, 56-4, top rod, 57, first Three fixed pulleys, 58, second tension spring, 59, third tension spring, 60, second waist guard, 61, positioning small tension spring, 62, first brake arm, 63, brake wheel, 64, brake return spring, 66, fourth wheel axle, 68, rubber tube, 70, pedal, 70-1, fourth rope winding interface, 71, mudguard, 73, first small pulley, 75, second pedal center axis, 76, first two-way pedal rod, 76-1, fifth rope winding interface, 77, second two-way pedal rod, 77-1, sixth rope winding interface, 77-2, eight 7-shaped joint, 77-3, 7-shaped joint, 78, second small pulley, 79, second bearing, 80, third bearing, 81, fourth bearing, 83, fifth bearing, 84, third pedal axle, 85, shifter, 85-1, pedal cross axis, 85-2, shifter arm, 86, fourth cross axis, 87, small slide tube, 87-1, seventh rope interface, 87-2, wire interface, 88, third small pulley, 89, ring pedal, 89-1, second wire interface, 90, soft steel wire, 93, brake cross axis , 95. Limit leaf spring, 96. Sixth bearing, 97. Rope inner ring, 97-1. Inner ring body, 97-2. Inner ring cover, 97-3. Second ratchet hole, 98. Small steel ball, 99. Seventh bearing, 100. Second brake horizontal axis, 101. Second brake arm, 101-1. Brake pad base, 101-2. Top tube, 101-3. Cross bar, 102. Brake pad, 103. Friction inner ring, 104. Friction middle ring, 104-1. Stop edge, 105. Rubber outer ring, 106. One-way bearing. DETAILED DESCRIPTION

[0319] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0320] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0321] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0322] Example 1: Referring to Figure 1-17, a frame head tube 1-1 is provided at the front end of the frame 1. A steering wheel bracket 2 is hingedly connected within the frame head tube 1-1. A handlebar 4 is provided at the upper end of the steering wheel bracket 2, and a steering wheel 3 is mounted at the lower end of the steering wheel bracket 2. A drive wheel mounting arm 1-8 is provided at the rear end of the frame 1. A drive wheel shaft 8 is hingedly connected to the rear end of the drive wheel mounting arm 1-8 via a pair of first bearings 23. A drive wheel 9 is fixedly connected to the drive wheel shaft 8. The drive wheel 9 is sleeved on the middle portion of the drive wheel shaft 8 in a tightly fitting and non-rotatable manner relative to the drive wheel shaft 8. In front of the driving wheel 9, there is a middle axis tube 1-2, above the middle axis tube 1-2, there is a seat lower tube 1-4, at the upper end of the seat lower tube 1-4, there is a seat upper tube 28, at the upper end of the seat upper tube 28, there is a seat 29, the top of the seat upper tube 28 is located 5-15 cm behind the middle axis tube 1-2, so it is easier to use force when pedaling; in the middle axis tube 1-2, two coaxial and independently rotatable first pedal middle axes 5 are hinged through two pairs of bead racks 25, a pair of outer bowls 26, and a two-way inner bowl 27, the two-way inner bowl 27 is screwed to the horizontal middle part of the middle axis tube 1-2, and a pair of outer bowls 26 are screwed to both ends of the middle axis tube 1-2; at the end of the first pedal middle axis 5, a pedal rod 6 is fixed, and at the free end of the pedal rod 6, a pedal 7 is hinged or fixed.

[0323] The transmission mechanism consists of two sets, one on the left and one on the right, each located outside a pair of first bearings 23. The drive wheel 9 is mounted between the pair of first bearings 23. Each transmission mechanism includes a ratchet 10 fixedly connected to the drive wheel shaft 8, a rope ring 13 hingedly connected to the drive wheel shaft 8, a rope 14 connected to and wrapped around the rope ring 13, and a reset device connected between the rope ring 13 and the frame 1. The reset device consists of a flexible wire 16 and a reset spring 17. One end of the flexible wire 16 is connected to the rope ring 13, and the other end is connected to the reset spring 17. The other end of the reset spring 17 is connected to the frame 1. The reset spring 17 is a tension spring or a spiral spring.

[0324] In each transmission mechanism, a rope winding ring 13 is mounted on the outside of the first bearing 23 (i.e., the left rope winding ring 13 is mounted to the left of the left first bearing 23, and the right rope winding ring 13 is mounted to the right of the right first bearing 23). A ratchet 10 is mounted on the outside of the rope winding ring 13. The ratchet 10 comprises ratchet teeth 10-1 and a ratchet sidewall 10-2, which is fixedly connected to the drive wheel shaft 8. The rope winding ring 13 has a first pawl cavity 13-1 machined on the end facing the ratchet 10. A pawl 11 is mounted in the first pawl cavity 13-1 via an annular spring 12. The first pawl cavity 13-1 extends into the ratchet 10, and the pawl 11 engages with the ratchet teeth 10-1. The other end of the rope winding ring 13 is provided with a cord winding area 13-7 for winding a cord 16, and a cord interface 13-4 for connecting the cord 16 is provided.

[0325] The rope ring 13 is provided with a sealing wall 13-6 adjacent to the first pawl hole 13-1. The ratchet 10 is provided with a sealing edge 10-3 on the side facing the rope ring 13. The lateral position of the sealing wall 13-6 corresponds to the sealing edge 10-3. A small gap is provided between the outer circumference of the sealing wall 13-6 and the inner circumference of the sealing edge 10-3. This places the pawl 11 and the annular spring 12 in a relatively sealed space enclosed by the ratchet 10 and the sealing wall 13-6, preventing the ingress of mud and sand. The rope ring 13 is provided with a first rope interface 13-3 adjacent to the sealing wall 13-6 for connecting to the rope 14. A spiral groove 13-2 is machined on the circumference of the rope ring 13 between the first rope interface 13-3 and the cord winding area 13-7, allowing the rope 14 to spirally wrap around the rope ring 13 in an orderly manner. The rope winding ring 13 has bead bowls 13-5 at both ends, and steel balls 24 are arranged in the bead bowls 13-5. The rope winding ring 13 is hinged to the driving wheel shaft 8 between the inner ring of the first bearing 23 and the ratchet side wall 10-2 through two circles of steel balls 24 arranged at its two ends.

[0326] On the frame longitudinal beam 1-7, a pulley shaft 1-3 is provided above the swing track of the free end of the pedal rod 6, and a first fixed pulley 15 is hinged at each end of the pulley shaft 1-3; one end of the rope 14 is connected to the first rope interface 13-3, and the other end is connected to the free end of the pedal rod 6 through the first fixed pulley 15; thus, when the pedal 7 is stepped down, the rope 14 connected between the free end of the pedal rod 6 and the rope ring 13 through the first fixed pulley 15 and the rope ring 13 is wound around the rope ring 13, and the rope ring 13 is rotated in the forward direction. The pawl 11 drives the ratchet 10 and the driving wheel shaft 8 to rotate synchronously, providing forward power for the driving wheel 9; at the same time, the soft wire 16 is wrapped around the rope ring 13 and pulls the connected return spring 17, so that the return spring 17 stores energy; when the pedal 7 stops stepping on, the return spring 17 releases energy, and pulls the rope ring 13 to rotate idly in the opposite direction relative to the driving wheel shaft 8 through the soft wire 16 that has been wrapped around the rope ring 13, causing the rope 14 to re-wrap around the rope ring 13 along the spiral groove 13-2, thereby driving the free end of the connected pedal rod 6 to swing upward, and so on.

[0327] A speed regulating mechanism is provided at the free end of the pedal rod 6, which includes a slide rail 6-12 arranged on the pedal rod 6, a slide tube 19 sleeved on the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gear positions, and a reset torsion spring 21 connected between the positioning switch 20 and the pedal rod 6 and tending to put the positioning switch 20 in a closed state; a third rope winding interface 19-1 is provided on the slide tube 19, and the end of the rope 14 is connected to the slide tube 19.

[0328] The positioning switch 20 is hinged to the pedal rod 6 through the switch shaft 22; at the free end of the positioning switch 20, there is a lever 20-2 and several limit stops 20-1; the spacing between adjacent limit stops 20-1 is adapted to the length of the slide tube 19; the return torsion spring 21 tends to make the end of the limit stop 20-1 close to the slide rail 6-12 and prevent the slide tube 19 from moving along the slide rail 6-12; therefore, when it is necessary to adjust the low gear to the high gear, when the free end of the pedal rod 6 is at the highest point (at this time, its free end points obliquely upward), the sole of the foot pushes the lever 20-2 inward, causing the positioning switch 20 to rotate against the return torsion spring 21, and the end of the limit stop 20-1 to separate from the slide rail 6-12. Under the tension of the winding rope 14, the slide tube 19 slides toward the end of the pedal bar 6 distal to the first pedal center axis 5. Before the slide tube 19 slides to the desired gear position, the lever 20-2 is released, and the slide tube 19 is locked in the desired gear position by the positioning switch 20. When the high gear is to be adjusted to the low gear, when the free end of the pedal bar 6 is stepped on to a lower point (at this time, its free end points diagonally downward), the sole of the foot moves the lever 20-2 inward, the positioning switch 20 rotates against the return torsion spring 21, the end of the limit stop 20-1 disengages the slide rail 6-12, and the slide tube 19 slides toward the end of the pedal bar 6 proximal to the first pedal center axis 5 under the tension of the winding rope 14, easily completing the gear shift from high gear to low gear. To enable the frame 1 to be folded, a folding buckle 30 is provided in the middle of the frame longitudinal beam 1-7.

[0329] Embodiment 2: Referring to Figures 18-27, in Embodiment 2, a gripping arm base 1-6 is provided at the front lower portion of the center axis tube 1-2. At the lower end of the gripping arm base 1-6, a gripping arm 32 with its free end pointing rearward and downward is hingedly connected via a first transverse axis 31 and a pair of second bearings 79. The free end of the gripping arm 32 is hingedly connected to a first wheel shaft 33 via a pair of third bearings 80. A gripping wheel 35 and a pair of friction wheels 34 are fixedly connected to the first wheel shaft 33. The gripping wheel 35 is fixedly connected to the middle portion of the first wheel shaft 33 and is located between the two third bearings 80. The pair of friction wheels 34 are located outside the two third bearings 80. Embodiment 2 In Example 2, an extrusion rod 6-1 is provided on the inner side of the middle of the pedal rod 6, and the lateral position of the friction wheel 34 corresponds to the extrusion rod 6-1 on the pedal rod 6 on the same side. When the free end of the pedal rod 6 swings downward to a lower point, the extrusion rod 6-1 will be pressed against the circumferential surface of the friction wheel 34, preventing the friction wheel 34 and the gripping wheel 35 that rotates coaxially and synchronously with the friction wheel 34 from rotating smoothly, thereby braking smoothly; the frame 1 is provided with a limit rod 1-10 for limiting the swing range of the handle end of the gripping arm 32; a strong spring 36 is connected between the frame 1 and the gripping arm 32; the strong spring 36 tends to make the free end of the gripping arm 32 pointing backward and downward move When the handle end of the gripping arm 32 is pressed against the limit rod 1-10 under the action of the strong spring 36, the free end of the gripping arm 32 points to the rear and downward direction, the first wheel shaft 33 is located in front of or directly below the first pedal middle shaft 5, and the lowest point of the gripping wheel 35 is 0.5-2 cm lower than the line between the lowest point of the driving wheel 9 and the lowest point of the steering wheel 3; thus, when the empty vehicle is pushed, the gripping wheel 35 and the steering wheel 3 touch the ground, the driving wheel 9 leaves the ground, and the vehicle can move backward freely; and when riding the vehicle, the free end of the gripping arm 32 swings upward against the strong spring 36, the driving wheel 9 touches the ground, and the driving wheel 9 and the gripping wheel The grip wheel 35 and the steering wheel 3 bear pressure together; the grip wheel 35 can bear about one-third of the total weight of the vehicle body and the human body. Since the longitudinal position of the grip wheel 35 is exactly at the center of the force (the force applied by pedaling and the gravity applied by the seat), this will greatly reduce the load on the frame 1, reduce the elastic deformation of the frame 1, and at the same time greatly reduce the load on the drive wheel 9 and the steering wheel 3; the two ends of the first wheel axle 33 extend outward and are sleeved with a pair of rubber tubes 68; during riding and pedaling, the first wheel axle 33 and the rubber tube 68 limit the pedaling range of the heel; when pedaling stops, the first wheel axle 33 and the rubber tube 68 are used to park the heel.

[0330] 19 and 25 , in the second embodiment, in order to obtain a higher speed ratio, an extended version of the pedal rod 6 is used. At the same time, in order to enable the pedal 7 to be stepped on lower, the extended end of the pedal rod 6 is slightly bent upward.

[0331] Example 3: Please refer to Figures 28-36. In Example 3, a transverse tube 1-9 is provided at the front lower part of the central axis tube 1-2. In the transverse tube 1-9, two coaxial second transverse shafts 37 that can rotate independently are hinged through two pairs of bead racks 25, a pair of outer bowls 26, and a two-way inner bowl 27. At the outer ends of the left and right second transverse shafts 37, a gripping arm 32 with a free end pointing to the rear and downward is fixedly connected. At the free end of the gripping arm 32, a second wheel axle 38 is fixedly connected. A gripping wheel 35 is hinged on the wheel axle 38; the lateral position of the gripping wheel 35 corresponds to the pedal rod 6 on the same side, and an eight-shaped extrusion piece 6-2 is fixed to the bottom of the pedal rod 6. When the free end of the pedal rod 6 swings downward to a lower point, the eight-shaped extrusion piece 6-2 set at the bottom of the pedal rod 6 will be pressed against both sides of the circumferential surface of the gripping wheel 35, preventing the gripping wheel 35 from rolling smoothly and automatically completing the braking process; the frame 1 is provided with a limit rod 1-10 for limiting the swing range of the handle end of the gripping arm 32; A strong spring 36 is connected between the frame 1 and each gripping arm 32; the strong spring 36 tends to swing the free end of the gripping arm 32 pointing rearward and downward downward, so that the handle end of the gripping arm 32 is close to the limit rod 1-10; when the handle end of the gripping arm 32 is pressed against the limit rod 1-10 under the action of the strong spring 36, the free end of the gripping arm 32 points rearward and downward, the second wheel axle 38 is located below the first pedal middle axis 5, and the lowest point of the gripping wheel 35 is lower than the connection point between the lowest point of the driving wheel 9 and the lowest point of the steering wheel 3. The line is 0.5-2 cm; since the grip wheels 35 are arranged on both sides of the vehicle body, the radial force that causes the vehicle body to tilt when pedaling has a support point, which will improve the driving stability and comfort, and further enhance the grip and anti-slip properties of the entire vehicle, and has an automatic standing function; the second wheel axle 38 extends outward and is sleeved with a rubber tube 68; during riding and pedaling, the second wheel axle 38 and the rubber tube 68 limit the pedaling range of the heel; when pedaling stops, the second wheel axle 38 and the rubber tube 68 are used to park the heel.

[0332] 37-47, in the fourth embodiment, a pair of fourth bearings 81 are installed at both ends of the transverse tube 1-9, and a gripping arm 32 with a free end pointing to the rear lower side is hinged to the transverse tube 1-9 through a third transverse axis 39 and a pair of fourth bearings 81 installed in the transverse tube 1-9; the free end of the gripping arm 32 is fixedly connected to the third wheel shaft 40, and the third wheel shaft 40 is hinged with left and right gripping wheels 35, and the lateral positions of the left and right gripping wheels correspond to the left and right pedal rods 6 respectively; the bottom of the pedal rod 6 is fixedly connected to an eight-shaped extrusion piece 6-2, and when the free end of the pedal rod 6 swings downward to a lower point, the eight-shaped extrusion piece 6-2 provided at the bottom of the pedal rod 6 will be pressed against both sides of the circumferential surface of the gripping wheel 35 to prevent the gripping wheel 35 from rolling smoothly, and the braking process is automatically completed; the frame 1 is provided with a device for limiting the gripping wheel 35 The handle end of the ground arm 32 is provided with a limit rod 1-10 for the swinging range of the ground arm 32; a pair of strong springs 36 are connected between the frame 1 and the ground gripping arm 32; the strong spring 36 tends to make the free end of the ground gripping arm 32 pointing to the rear and downward swing downward, so that the handle end of the ground gripping arm 32 is close to the limit rod 1-10; when the handle end of the ground gripping arm 32 is pressed against the limit rod 1-10 under the action of the strong spring 36, the free end of the ground gripping arm 32 points to the rear and downward, the third wheel axle 40 is located below the first pedal center axis 5, and the lowest point of the ground gripping wheel 35 is 0.5-2 cm lower than the line between the lowest point of the driving wheel 9 and the lowest point of the steering wheel 3; the two ends of the third wheel axle 40 extend outward and are sleeved with a pair of rubber tubes 68; during riding and pedaling, the third wheel axle 40 and the rubber tube 68 limit the pedaling range of the heel, and when pedaling stops, the third wheel axle 40 and the rubber tube 68 can be used to park the heel.

[0333] In addition, in the fourth embodiment, the handlebar 4 is not provided above the steering wheel bracket 2. At the same time, a first direction control device for replacing the handlebar 4 is provided at the upper end of the seat upper tube 28. The first direction control device comprises: a locking ring 44 fixed to the upper end of the seat upper tube 28, a lower transverse shaft 45 fixed to the lower end of the locking ring 44, a pair of steering arms 48 hinged at both ends of the lower transverse shaft 45, an upper transverse tube 46 fixed to the upper end of the locking ring 44, a positioning member 49 hinged to the upper transverse tube 46 through a small transverse shaft 47, a first tension spring 50 connected between the positioning member 49 and the seat upper tube 28, and two left and right steel wires 51 connected between the steering wheel bracket 2 and the pair of steering arms 48; a steel wire locking and adjustment mechanism 52 is provided at the front end of the steering arm 48, and the rear of the frame 1 A pair of second fixed pulleys 53 are provided on both sides of the end, and the left side steel wire rope 51 is connected between the front end of the left side steering arm 48 and the left shoulder of the steering wheel bracket 2 through the left side second fixed pulley 53, and the right side steel wire rope 51 is connected between the front end of the right side steering arm 48 and the right shoulder of the steering wheel bracket 2 through the right side second fixed pulley 53; a first waist guard 54 is provided at the upper end of the steering arm 48, and the first waist guard 54 corresponds to the waist of the rider; when the left side first waist guard 54 is squeezed backward with the waist, the rear end of the left steering arm 48 swings downward, the front end 48-1 of the left steering arm swings upward, and the left shoulder of the steering wheel bracket 2 is pulled backward through the connected steel wire rope 51, driving the steering wheel 3 to turn left; conversely, when the right side first waist guard 54 is squeezed backward with the waist, the steering wheel 3 turns right; positioning part 49 includes a small swing arm 49-1 hinged to the upper cross tube 46 through a small cross shaft 47, and a transverse pressure rod 49-2 fixed to the free end of the small swing arm 49-1, the transverse pressure rod 49-2 presses on the upper rear end of a pair of direction arms 48; the first tension spring 50 tends to make the transverse pressure rod 49-2 press the rear ends of the left and right direction arms 48; when the transverse pressure rod 49-2 presses the rear ends of the left and right direction arms 48 at the same time, the spring force of the first tension spring 50 acts on the left and right shoulders of the steering wheel bracket 2 at the same time through the left and right steel wires 51, and the steering wheel 3 faces straight ahead; therefore, when the steering wheel 3 turns slightly to the left (right) while moving forward, the right (left) side steel wire 51 will pull the front end of the right (left) side steering arm 48 to swing downward, causing the right (left) side steering arm 48 to swing downward. The rear end of the steering arm 48 swings upward against the strong spring 36. At this time, the spring force of the strong spring 36 will all act on the rear end of the right (left) side steering arm 48, and act on the right (left) shoulder of the steering wheel bracket 2 through the right (left) side steel wire cord 51, preventing the steering wheel 3 from turning left (right); therefore, the steering wheel 3 has a strong resistance to external interference that causes its direction to change (such as uneven road surface, encountering small stones, etc.) and a strong force to automatically maintain its direction when moving. This makes it easy to control the direction with the waist. When the direction of travel needs to be adjusted, the waist can be used to squeeze the first waist guard 54 on the corresponding side backward; alternatively, the waist always rests on the left and right first waist guards 54, and when the direction of travel needs to be adjusted, the pressure ratio of the waist on the left and right first waist guards 54 can be adjusted.

[0334] Example 5: Please refer to Figures 48-52. Example 5 is basically the same as Example 4. The main difference is that in Example 5, the length and diameter of the third wheel shaft 40 are larger than those in Example 4. The left and right gripping wheels 35 in Example 5 are respectively hinged at both ends of the third wheel shaft 40, and their lateral positions no longer correspond to the left and right pedal rods 6. The distance between the left and right gripping wheels 35 is increased to about 40 cm, which further greatly increases the driving stability. At the same time, in Example 5, the gripping wheels 35 are no longer used for braking at the same time, and a first foot brake device is provided. The first foot brake device includes a brake fixed to the vehicle. The horizontal axis 1-11 on the frame 1, a pair of first brake arms 62 hinged at both ends of the horizontal axis 1-11, and a brake wheel 63 hinged at the lower end of the first brake arm 62; the lateral position of the brake wheel 63 corresponds to the pedal rod 6 on the same side, and the longitudinal position of the brake wheel 63 corresponds to the free end of the pedal rod 6 on the same side; during riding, the brake wheel 63 rolls along the ground; during normal riding, the pedal rod 6 does not touch the brake wheel 63. When decelerating or braking, when the pedal 7 is stepped on to the lower point, the free end of the pedal rod 6 will be pressed on the brake wheel 63, preventing the brake wheel 63 from rolling smoothly and braking smoothly.

[0335] 53-59, Example 6 is basically the same as Example 5, and the main difference is that in Example 6, a second direction control device is provided at the upper end of the seat tube 28 to replace the first direction control device, and the second direction control device includes: a longitudinal rod 55 fixedly connected to the upper end of the seat tube 28, a direction control arm 56 hinged on the longitudinal rod 55, a third fixed pulley 57 arranged on the left side of the rear end of the frame 1, a steel wire 51 connected between the direction control arm 56 and the left shoulder of the steering wheel bracket 2 through the third fixed pulley 57, a second tension spring 58 connected between the direction control arm 56 and the seat 29, and a third tension spring 59 connected between the right shoulder of the steering wheel bracket 2 and the frame 1; the direction control arm 56 includes a hinged tube 56-1 sleeved on the longitudinal rod 55, a right small arm 56-2 fixed to the right side of the hinged tube 56-1, and a control arm 56-3 fixed to the upper end of the hinged tube 56-1; the second tension spring 58 is connected to Between the right end of the right arm 56-2 and the rear end of the seat 29, a wire locking and adjusting mechanism 52 is provided at the right end of the right arm 56-2. The steel wire 51 is connected between the right end of the right arm 56-2 and the left shoulder of the steering wheel bracket 2 through the third fixed pulley 57. The tension applied by the second tension spring 58 to the left shoulder of the steering wheel bracket 2 through the direction control arm 56 and the steel wire 51 corresponds to the tension applied by the third tension spring 59 to the right shoulder of the steering wheel bracket 2. The resultant force of the two tends to make The steering wheel bracket 2 faces straight ahead. A second waist guard 60 is provided at the upper end of the steering control arm 56, corresponding to the rider's waist or back. When the second waist guard 60 is swung leftward, the tension exerted on the left shoulder of the steering wheel bracket 2 by the steering control arm 56 and the second tension spring 58 via the steel cord 51 is greater than the tension exerted on the right shoulder of the steering wheel bracket 2 by the third tension spring 59, causing the steering wheel 3 to turn left. Conversely, when the second waist guard 60 is swung rightward, the steering wheel 3 turns right. A forward-extending push rod 56-4 is provided at the upper end of the steering control arm 56, onto which the second waist guard 60 is rotatably mounted. A small positioning tension spring 61 is connected between the lower end of the second waist guard 60 and the steering control arm 56.

[0336] Embodiment 7: Please refer to Figures 60-66. Embodiment 7 is basically the same as Embodiment 5. The main difference is that in Embodiment 7, a crossbeam 1-12 is provided at the middle and rear part of the frame 1, at an appropriate distance behind and below the center axis tube 1-2. At both ends of the crossbeam 1-12, there is a gripping arm 32 with a free end pointing forward and downward, and the free end of the gripping arm 32 is hinged to a gripping wheel 35 through the fourth wheel axle 66; a rubber tube 68 is sleeved on the inner end of the fourth wheel axle 66; the crossbeam 1-12 is about 40 cm long, so that the left and right gripping arms 32 hinged at the two ends of the crossbeam 1-12 are respectively located on the outside of the soles of the left and right feet; a limit rod is provided on the crossbeam 1-12 for limiting the swing range of the handle end of the gripping arm 32 1-10; a strong spring 36 is connected between the crossbeam 1-12 and each gripping arm 32; the strong spring 36 tends to swing the free end of the gripping arm 32 pointing forward and downward downward, so that the handle end of the gripping arm 32 is close to the limit rod 1-10; when the handle end of the gripping arm 32 is close to the limit rod 1-10 under the action of the strong spring 36, the free end of the gripping arm 32 points forward and downward, the fourth wheel axle 66 is located below the first pedal axis 5, and the lowest point of the gripping wheel 35 is 0.5-2 cm lower than the line between the lowest point of the driving wheel 9 and the lowest point of the steering wheel 3; during riding and pedaling, the fourth wheel axle 66 and the rubber tube 68 limit the pedaling range of the heel, and when pedaling stops, the fourth wheel axle 66 and the rubber tube 68 can be used to park the heel. In the seventh embodiment, a first foot brake device is also provided, wherein the transverse axis 1-11 is arranged below the center tube 1-2, and the free end of the first brake arm 62 points forward and downward; the brake return spring 64 connected between the first brake arm 62 and the frame 1 causes the brake wheel 63 to hover above the ground, 1-2 cm away from the ground.

[0337] Embodiment 8: In embodiment 8, the frame head tube 1-1, the steering wheel bracket 2, and the steering wheel 3 are arranged at the rear end of the frame 1, the driving wheel shaft 8 and the driving wheel 9 are arranged at the front end of the frame 1, and a third steering control device is provided at the rear end of the frame 1.

[0338] Please refer to Figures 67-72. The front end of the frame 1 is hinged with a drive wheel shaft 8 and a drive wheel 9 through a first bearing 23; at the rear end of the frame 1, a frame head tube 1-1 is provided, and a steering wheel bracket 2 is hinged in the frame head tube 1-1, and a steering wheel 3 is installed at the lower end of the steering wheel bracket 2; in front of the frame head tube 1-1, a middle axis tube 1-2 is provided, above the middle axis tube 1-2, a seat lower tube 1-4 is provided, at the upper end of the seat lower tube 1-4, a seat upper tube 28 is provided, and at the upper end of the seat upper tube 28, a seat 29 is provided; at the rear end of the frame 1, a third direction control device is provided, the third direction control device includes: a direction lower tube 1-5 provided behind the seat lower tube 1-4, a direction tube 41 hinged in the direction lower tube 1-5, a direction rod 43 fixed to the upper end of the steering wheel bracket 2, and a direction control rod 42 fixed to the lower end of the direction tube 41; wherein, The free end of the direction rod 43 is bent upward to form a vertical cylinder 43-1, and the free end of the direction control rod 42 is provided with an elongated bayonet 42-1. The opening width of the elongated bayonet 42-1 is adapted to the diameter of the vertical cylinder 43-1, and the vertical cylinder 43-1 extends into the elongated bayonet 42-1. When the forward direction of the steering wheel 3 is facing straight ahead, the free end of the direction rod 43 points straight ahead and the free end of the direction control rod 42 points straight behind. A cross bar 41-1 is provided on the top of the direction tube 41, and third waist guards 41-2 are provided at both ends of the cross bar 41-1. The third waist guard 41-2 corresponds to the waist of the rider. In this way, the rotation of the direction tube 41 can be controlled by controlling the third waist guard 41-2 by the waist. When the direction tube 41 rotates, the free end of the direction control rod 42 will move the vertical cylinder 43-1 to drive the steering wheel bracket 2 to turn.

[0339] Example 9: Please refer to Figures 73-80. In Example 9, the pedal device is composed of only a first bidirectional pedal rod 76 that is symmetrical on the left and right; two left and right fifth rope winding interfaces 76-1 are provided in the middle of the first bidirectional pedal rod 76, and the distance between the two fifth rope winding interfaces 76-1 is equal to the lateral distance between a pair of first fixed pulleys 15 arranged on both sides of the frame longitudinal beam 1-7; the end of the rope 14 passes through the first fixed pulley 15 on the same side and is connected to the fifth rope winding interface 76-1 on the same side; below the pair of first fixed pulleys 15, a limit plate 1-18 is provided for limiting the upward movement range of the first bidirectional pedal rod 76.

[0340] The pedaling method of the ninth embodiment is: pedaling with both feet simultaneously. Pedaling with both feet simultaneously makes the vehicle more stable; in particular, it adopts a linear pedaling method, which does not have the problem of torque shortening in rotary pedaling.

[0341] Example 10: While Examples 1-9 all feature two transmission mechanisms, left and right, in this example, referring to Figures 81-93 , only one transmission mechanism is provided, located to the right of the drive wheel 9 . The drive wheel 9 , ratchet 10 , and rope winding ring 13 are mounted between a pair of first bearings 23 . A ratchet housing 9 - 1 is provided to the right of the center portion of the drive wheel 9 . The ratchet 10 is secured within the housing 9 - 1 , and the rope winding ring 13 is mounted to the right of the ratchet 10 . In the rope winding ring 13 of the tenth embodiment, the sealing wall 13-6 is arranged close to the right side of the first pawl hole 13-1, the soft wire winding area 13-7 is arranged at the right end of the rope winding ring 13, and the first rope winding interface 13-3 and the soft wire interface 13-4 are arranged on the left side of the soft wire winding area 13-7; on the circumferential surface of the rope winding ring 13 located between the first rope winding interface 13-3 and the sealing wall 13-6, a spiral groove 13-2 is processed, and the rope 14 is wound from the right end to the left end of the rope winding ring 13 along the spiral groove 13-2; thus, when the end of the rope 14 extends to the first fixed pulley 15 along the tangential direction of the spiral groove, it will be closer to the transverse middle position of the frame longitudinal beam 1-7; then, when the first fixed pulley 15 is arranged at the transverse middle part below the frame longitudinal beam 1-7, the distance that the driving wheel 9 needs to offset to the left can be reduced to a minimum.

[0342] Both ends of the rope winding ring 13 are respectively processed with bead bowls 13-5, and steel balls 24 are arranged in the bead bowls 13-5; the ratchet 10 can be composed of ratchet teeth 10-1 and ratchet side walls 10-2; or, the ratchet 10 is not provided with ratchet side walls 10-2, but is only composed of ratchet teeth 10-1 and sealing edges 10-3; when the ratchet 10 is provided with ratchet side walls 10-2, the rope winding ring 13 is hinged to the driving wheel shaft 8 between the ratchet side walls 10-2 and the inner ring of the right first bearing 23 through two circles of steel balls 24 arranged at its two ends; when the ratchet 10 is not provided with ratchet side walls 10-2, but is only composed of ratchet teeth 10-1 and sealing edges 10-3, the rope winding ring 13 is hinged to the driving wheel shaft 8 between the ratchet sleeve 9-1 and the inner ring of the right first bearing 23 through two circles of steel balls 24 arranged at its two ends.

[0343] In the tenth embodiment, the pedal device is composed of a second bidirectional pedal rod 77; an eight-shaped joint 77-2 is provided in the middle of the second bidirectional pedal rod 77, and a sixth rope winding interface 77-1 is provided on the top of the eight-shaped joint 77-2; the frame 1 is provided with a first fixed pulley 15 at an appropriate distance in front of the drive wheel 9; the first fixed pulley 15 is arranged in the transverse middle position of the frame 1; or, the first fixed pulley 15 is slightly offset to the right of the transverse middle of the frame 1; when the first fixed pulley 15 is arranged in the transverse middle position of the frame 1, the drive wheel 9 is slightly offset to the left side of the frame 1; when the drive wheel 9 is arranged in the transverse middle position of the frame 1, the first fixed pulley 15 is slightly offset to the right side of the frame 1; or, the first fixed pulley 15 can also be arranged in the transverse middle position of the frame 1. While the pulley 15 is slightly offset to the right side of the frame 1, the driving wheel 9 is slightly offset to the left side of the frame 1; the end of the rope 14 is connected to the sixth rope interface 77-1 through the first fixed pulley 15; the frame 1 is provided with a limit ring 1-16 for limiting the upward movement range of the second bidirectional pedal rod 77 corresponding to the upper part of the figure-eight joint 77-2; when the second bidirectional pedal rod 77 is stopped and the figure-eight joint 77-2 is extended into and pressed against the limit ring 1-16, the limit ring 1-16 makes the two ends of the second bidirectional pedal rod 77 point to the left and right sides respectively; the transverse width and longitudinal width of the figure-eight joint 77-2 are both narrow at the top and wide at the bottom, so that the figure-eight joint 77-2 can always be smoothly extended into the limit ring 1-16.

[0344] Example 11: Please refer to Figures 94-101. Example 11 is basically the same as Example 10. The main difference is that in Example 11, a 7-shaped joint 77-3 is provided in the middle of the second bidirectional pedal 77, and the sixth rope winding interface 77-1 is provided on the top of the 7-shaped joint 77-3; below the frame longitudinal beam 1-7, corresponding to the top of the 7-shaped joint 77-3, a limiting groove 1-20 is provided for limiting the upward movement range of the second bidirectional pedal 77, and the cross-section of the limiting groove 1-20 is in an eight-shaped shape; when the second bidirectional pedal 77 stops being stepped on and the 7-shaped joint 77-3 extends into and adheres to the limiting groove 1-20, the limiting groove 1-20 makes the two ends of the second bidirectional pedal 77 point to the left and right sides respectively.

[0345] In the eleventh embodiment, a vertical tube 1-17 is provided below the frame longitudinal beam 1-7 and in front of the second bidirectional pedal rod 77. When both feet step downward on the second bidirectional pedal rod 77, the inner side of the sole of the foot can step downward against the vertical tube 1-17; thereby preventing a large deviation in the stepping direction and preventing the second bidirectional pedal rod 77 from vibrating when being stepped on.

[0346] In addition, a pair of second small pulleys 78 are hinged in the middle of the second two-way pedal rod 77 near the side of the vertical tube 1-17. When both feet step on the second two-way pedal rod 77 downward, the pair of second small pulleys 78 roll downward along the vertical tube 1-17.

[0347] Example 12: Please refer to Figures 102-112. In Example 12, a vertical slide rail 1-21 (used to replace the vertical tube 1-17 in Example 11) is provided below the frame longitudinal beam 1-7 and in front of the first fixed pulley 15. The vertical slide rail 1-21 is provided with two pulley grooves 1-22 in front and behind. A small slide tube 87 is sleeved on the vertical slide rail 1-21. A third small pulley 88 is hinged to the middle part of the rear side of the small slide tube 87, and a third small pulley 88 is hinged to the upper and lower ends of the front side of the small slide tube 87. When the small slide tube 87 moves up and down, each third small pulley 88 rolls up and down along the trajectory determined by the two pulley grooves 1-22 in front and behind. Four steel wire interfaces 87-2 are provided at the lower end of the small slide tube 87. An annular pedal is connected to the lower part of the small slide tube 87 through four soft steel wires 90. 89. Four second steel wire interfaces 89-1 arranged in a rectangular shape are provided in the middle of the annular pedal 89. The upper ends of the four soft steel wires 90 are respectively connected to the four steel wire interfaces 87-2, and the lower ends of the four soft steel wires 90 are respectively connected to the four second steel wire interfaces 89-1; at the upper end of the small slide tube 87, a seventh rope winding interface 87-1 is provided, and the end of the rope 14 is connected to the seventh rope winding interface 87-1 through the first fixed pulley 15; at the upper end of the vertical slide rail 1-21, a limit plate 1-18 is provided for limiting the upward movement range of the small slide tube 87.

[0348] Example 13: Please refer to Figures 113-115. This embodiment only has one set of transmission mechanisms, which are arranged on the right side of the frame 1; the frame 1 is provided with a central axis tube 1-2, and a second pedal central axis 75 is hinged in the central axis tube 1-2. At both ends of the second pedal central axis 75, there is a pedal rod 6 fixedly connected. The free end of each pedal rod 6 is hinged or fixedly connected to a pedal 7, and the left and right pedal rods 6 are symmetrical. A speed regulating mechanism is provided at the free end of the right footrest rod 6. This speed regulating mechanism is substantially identical to the speed regulating mechanism provided at the free end of the right footrest rod 6 in the second embodiment. In the thirteenth embodiment, when the winding rope 14 is a thin steel wire rope, the slide tube 19 is provided with an inverted figure-eight arc-shaped guard 19-2 above the third winding rope interface 19-1. When the winding rope 14 is a chain, the inverted figure-eight arc-shaped guard 19-2 is not required. A first fixed pulley 15 is provided on the right side of the frame longitudinal beam 1-7, corresponding to the position above the free end of the right footrest rod 6. The end of the winding rope 14 is connected to the slide tube 19 via the first fixed pulley 15. In the thirteenth embodiment, both feet are simultaneously pedaled during riding.

[0349] Embodiment 14: Please refer to Figures 116-121. This embodiment only has one set of transmission mechanism, which is arranged on the right side of the driving wheel 9; its pedal device consists of a pedal rod 6 and two left and right pedals 7 fixed or hinged to the rear end of the pedal rod 6. A cross tube 6-8 is provided at the front end of the pedal rod 6, and a pair of fifth bearings 83 are installed at both ends of the cross tube 6-8; a pedal base 1-19 is provided at the lower front end of the frame longitudinal beam 1-7; the cross tube 6-8 is hinged to the pedal base 1-19 through a pair of fifth bearings 83 and a third pedal center axis 84; the free end of the pedal rod 6 is provided with a second rope winding interface 6-3, and the second rope winding interface 6-3 is provided with an arc-shaped guard 6-4 for preventing the end of the rope 14 from being bent and damaged; a first fixed pulley 15 is provided below the frame longitudinal beam 1-7; when the pedal rod 6 is in a horizontal state, the first fixed pulley 15 is located above the second rope winding interface 6-3; the end of the rope 14 is connected to the second rope winding interface 6-3 through the first fixed pulley 15.

[0350] Example 15: Please refer to Figures 122-129. Example 15 is basically the same as Example 14. The main difference is that in Example 15, a speed regulating mechanism is provided at the free end of the pedal rod 6; the speed regulating mechanism in Example 15 is basically the same as the speed regulating mechanism in Example 13.

[0351] Example 16: Please refer to Figures 130-134. Example 16 is basically the same as Example 14, and the main difference is that in Example 16, the frame 1 is provided with a brake base 1-23 below the footrest base 1-19; below the brake base 1-23, a first foot brake device is provided, and the first foot brake device includes: a first brake arm 62 hinged to the brake base 1-23 through a brake transverse axis 93, a brake wheel 63 hinged at the free end of the first brake arm 62, a brake return spring 64 connected between the first brake arm 62 and the brake base 1-23, and a limiting leaf spring 95 for elastically limiting the upward swing range of the free end of the first brake arm 62; one end of the limiting leaf spring 95 is fixedly connected to the bottom of the brake base 1-23, and the limiting leaf spring 95 is free The free end of the first brake arm 62 is located above the first brake arm 62; the brake return spring 64 tends to swing the free end of the first brake arm 62 upward to compress the free end of the limit leaf spring 95; when the first brake arm 62 swings upward to compress the free end of the limit leaf spring 95 under the spring force of the brake return spring 64, the brake wheel 63 hovers above the ground, 1-2 cm away from the ground; when the free end of the pedal rod 6 swings downward to a predetermined low point, the free end of the pedal rod 6 just presses on the brake wheel 63 hovering 1-3 cm above the ground; at this time, when the pedal 7 continues to be stepped down, the free end of the pedal rod 6 pushes the brake wheel 63 downward, the brake wheel 63 touches the ground and rolls along the ground, and the free end of the pedal rod 6 presses the brake wheel 63 to prevent the brake wheel 63 from rolling smoothly; braking smoothly.

[0352] Example 17: Referring to Figures 135-144, this embodiment is provided with only one transmission mechanism, which is arranged on the right side of the drive wheel 9; this embodiment is provided with a speed regulating device with two adjustable gears; its pedal device includes a pedal rod 6, and two left and right pedals 7 hinged to the free end of the pedal rod 6 through a gear adjuster 85; the front end of the pedal rod 6 is provided with a cross tube 6-8, and a pair of fifth bearings 83 are installed at both ends of the cross tube 6-8; the frame 1 is provided with a pedal base 1-19; the cross tube 6-8 is connected to the pedal base 1 through a pair of fifth bearings 83 and a third pedal center axis 84 -19 are hinged; the shifter 85 consists of a pedal transverse axis 85-1 and a pair of shift arms 85-2 fixed to the middle of the pedal transverse axis 85-1; the ends of the pair of shift arms 85-2 are hinged to the free end of the footrest rod 6 through a fourth transverse axis 86; the left and right footrests 7 are respectively hinged to the two ends of the pedal transverse axis 85-1; a first fixed pulley 15 is provided under the frame longitudinal beam 1-7; when the footrest rod 6 is in a horizontal state, the first fixed pulley 15 is located above the free end of the footrest rod 6; the end of the winding rope 14 is connected to the free end of the footrest rod 6 through the first fixed pulley 15.

[0353] The free end of the pedal rod 6 is bent upward to form an arc corner 6-5 at the bend that matches the central circumferential surface of the pedal transverse axis 85-1. At the free end of the pedal rod 6, an arc recess 6-6 is processed that matches the central circumferential surface of the pedal transverse axis 85-1. A pair of hinged plates 6-7 are provided between the arc corner 6-5 and the arc recess 6-6. A pair of shift adjustment arms 85-2 are hinged to the hinged plate 6-7 at their ends through the fourth transverse axis 86. The pedal transverse axis 85-1 can be swung to fit closely against the arc corner 6-5 or the arc recess 6-6, thereby completing the mutual conversion between high gear and low gear.

[0354] A second rope interface 6-3 is provided at the free end of the pedal rod 6. An arc-shaped guard 6-4 is provided at the second rope interface 6-3 to prevent the end of the rope 14 from being bent and damaged. The end of the rope 14 is connected to the free end of the pedal rod 6 via the second rope interface 6-3. In the accompanying drawings, Figure 135 is a schematic diagram of the overall structure of the sixteenth embodiment when the gear selector 85 is in the high-speed gear position, and Figure 136 is a schematic diagram of the overall structure of the sixteenth embodiment when the gear selector 85 is in the low-speed gear position (the right foot pedal 7 is omitted in this figure). Figure 140 is a schematic diagram of the structure of Figure 135 when the free end of the pedal rod 6 is at the low pedaling point.

[0355] Example 18: Referring to Figures 145-151, Example 18 is essentially the same as Example 17, differing primarily in that the second rope reel interface 6-3 and arc-shaped guard 6-4 of Example 17 are positioned slightly behind the arc recess 6-6, whereas the second rope reel interface 6-3 and arc-shaped guard 6-4 of Example 18 are positioned slightly in front of the arc corner 6-5. In the accompanying drawings, Figure 145 is a schematic diagram of the overall structure of Example 18 when the shifter 85 is in the high-speed gear position, and Figure 146 is a schematic diagram of the overall structure of Example 18 when the shifter 85 is in the low-speed gear position.

[0356] Embodiment 19: Please refer to Figures 152-160. This embodiment is provided with two sets of transmission mechanisms, which are arranged on both sides of the frame 1; the frame 1 is provided with a central axis tube 1-2, and two first pedal central axes 5 are hinged in the central axis tube 1-2. At the outer ends of the two first pedal central axes 5, each is fixed with a pedal rod 6, and a rope connecting arm 6-9 is provided on the pedal rod 6. The free end of the rope connecting arm 6-9 is provided with an eighth rope interface 6-10, and the end of the rope 14 is connected to the free end of the rope connecting arm 6-9 on the same side; when the free end of the pedal rod 6 points to the front, the free end of the rope connecting arm 6-9 points upward and is slightly tilted inward; therefore, when the free end of the pedal rod 6 swings downward within the set preferred angle range, the rope The free end of the connecting arm 6-9 pulls the end of the rope 14 forward, driving the rope ring 13 to rotate; since the free end of the rope connecting arm 6-9 always pulls the end of the rope 14 forward, the end of the rope 14 can always remain in the tangential direction (the end of the rope 14 is always in the optimal lateral position) when the rope 14 is separated from the rope ring 13 and is rewound around the rope ring 13, so that the rope 14 can accurately enter the spiral groove 13-2 of the rope ring 13 according to the set path when it is rewound around the rope ring 13; or, the rope ring 13 in Example 19 can be provided with a spiral groove 13-2, and the rope 14 can always accurately wind around the rope ring 13 according to the set path when it is rewound around the rope ring 13.

[0357] In Example 19, the winding rope 14 is composed of a chain 14-1 and a hard steel wire 14-2. The chain 14-1 is used at the end connected to the winding rope ring 13 that needs to be wound around the winding rope ring 13, while the hard steel wire 14-2 is used at the end connected to the free end of the winding rope connecting arm 6-9 that does not need to be wound around the winding rope ring 13. When the chain 14-1 is wound around the winding rope ring 13 according to the set path, the bottom of the chain 14-1 fits with the circumferential surface of the winding rope ring 13, allowing the chain 14-1 to better fit the winding rope ring 13 when it is wound around the winding rope ring 13. In Figures 152, 155, and 156, for ease of drawing, only the end of the chain 14-1 connected to the hard steel wire 14-2 is shown, and the portion wound around the winding rope ring 13 (the head end of the chain 14-1 is connected to the first winding rope interface 13-3) is omitted.

[0358] Example 20: Please refer to Figures 161-169. This embodiment only has one set of transmission mechanisms, which is arranged on the right side of the frame 1; in this embodiment, the frame 1 is provided with a central axis tube 1-2, and a second pedal central axis 75 is hinged in the central axis tube 1-2, and a pedal rod 6 is fixedly connected at both ends of the second pedal central axis 75, wherein only the right pedal rod 6 is provided with a rope-winding connecting arm 6-9; a speed regulating mechanism is provided at the free end of the rope-winding connecting arm 6-9; the speed regulating mechanism includes a slide rail 6-12 provided at the free end of the rope-winding connecting arm 6-9, a slide tube 19 sleeved on the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gear positions, and a reset torsion spring 21 connected between the positioning switch 20 and the rope-winding connecting arm 6-9, which tends to keep the positioning switch 20 in a closed state; a third rope-winding interface 19-1 is provided on the slide tube 19, and the end of the rope 14 is connected to the slide tube 19. The left and right pedal rods 6 are connected into a whole through the two middle transverse tubes 6-11, which greatly reduces the elastic deformation of the pedal rods 6 during pedaling and reduces energy loss.

[0359] Example 21: Referring to Figures 170-179, Example 21 is substantially identical to Example 20, differing primarily in that the free end of the pedal rod 6 in Example 20 faces forward, while the free end of the pedal rod 6 in Example 21 faces rearward. This example does not include a speed regulating mechanism, and the end of the rope-winding connecting arm 6-9 is provided with an eighth rope-winding interface 6-10, to which the end of the rope 14 is connected. When the free end of the pedal rod 6 points directly rearward, the free end of the rope-winding connecting arm 6-9 points downward. In this example, the longitudinal distance between the pedal 7 and the drive wheel shaft 8 is very small. During riding, the pedaling force primarily acts on the drive wheel 9, reducing the load on the frame longitudinal beam 1-7, preventing the frame longitudinal beam 1-7 from absorbing energy due to elastic deformation during riding, and appropriately reducing the distance between the front and rear wheels. In Example 21, the rope-winding ring 13 is not provided with a spiral groove 13-2. In the accompanying drawings, for the sake of convenience, the chain 14-1 only shows one end connected to the hard steel wire 14-2, and the part wound around the rope ring 13 is omitted (the head end of the chain 14-1 is connected to the first rope interface 13-3).

[0360] Example 22: Example 22 is basically the same as Example 21, and the main difference is that Example 22 is provided with two sets of left and right transmission mechanisms; please refer to Figures 180 and 181. In Example 22, two left and right first pedal central axes 5 are hinged in the central axis tube 1-2, and two left and right pedal rods 6 are fixed to the outer ends of the two left and right first pedal central axes 5. The left and right pedal rods 6 are respectively provided with a rope connecting arm 6-9, and the end of the rope connecting arm 6-9 is provided with an eighth rope interface 6-10, and the end of the rope 14 is connected to the free end of the rope connecting arm 6-9 on the same side.

[0361] Example 23: Referring to Figures 182-184, Example 23 is essentially the same as Example 22, differing primarily in that the center tube 1-2 is positioned further forward. Compared to Example 22, this has the advantage of reducing the lateral distance between the left and right footboards 7. However, it also has the disadvantage of increasing the load on the frame rails 1-7.

[0362] Example 24: Please refer to Figures 185-195. This example has two sets of transmission mechanisms, which are arranged on both sides of the frame 1; the driving wheel shaft 8 is hinged to the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixed to the driving wheel shaft 8; the frame 1 is provided with a pair of guide grooves 1-14 in front of the two ends of the driving wheel shaft 8; the pedal device consists of two left and right pedals 70; each pedal 70 is hinged with four small pulleys 73; the small pulleys 73 extend into the guide groove 1-14, so that the pedal 70 can move up and down along the trajectory determined by the guide groove 1-14; each pedal 70 is provided with a fourth rope interface 70-1, and the end of the rope 14 is connected to the pedal 70 on the same side through the fourth rope interface 70-1; the upper end of the guide groove 1-14 is provided with a limit plate 1-18 for limiting the upward movement range of the pedal 70. It adopts a linear pedaling method, and does not have the problem of torque shortening in rotary pedaling. The pedaling force acts directly on the driving wheel 9, and the energy utilization rate is about 98%.

[0363] In Example 24, the rope ring 13 is provided with a winding drum 13-8. The circumference of the winding drum 13-8 is provided with a rope winding area 13-9 for winding the rope 14. The rope winding area 13-9 is provided with a first rope winding interface 13-3. The rope 14 can be wound around the rope winding area 13-9 at most once; therefore, each pedal 70 is stepped on to drive the drive wheel 9 at most once. The circumference of the winding drum 13-8 is slightly larger than the maximum stroke of the pedal 70. Alternatively, the circumference of the winding drum 13-8 can be machined with a spiral groove 13-2, allowing the rope 14 to be wound around the winding drum 13-8 more than once along the spiral groove 13-2. This allows each pedal 70 stroke to drive the drive wheel 9 more than once. This reduces the diameter of the winding drum 13-8; however, the circumferential width of the winding drum 13-8 must be increased. A mudguard 71 is provided at the drive wheel 9.

[0364] Example 25: Referring to Figures 196-203, this embodiment is provided with only one transmission mechanism, which is arranged on the right side of the driving wheel 9; the frame 1 is provided with a central axis tube 1-2, in which a second pedal central axis 75 is hingedly connected, and at each end of the second pedal central axis 75, a pedal rod 6 is fixedly connected, and the free end of the pedal rod 6 is fixedly connected or hinged to a pedal 7; the free end of the pedal rod 6 faces rearward, and when the free end of the pedal rod 6 stays at the pedaling high point under the combined action of the return spring 17 and the tension of the winding rope 14, the free end of the pedal rod 6 The end is close to the rope ring 13; thus, the pedaling force will directly act on the driving wheel 9 through the rope ring 13 and the driving wheel shaft 8, which greatly reduces the load on the frame 1 and has a lower requirement on the rigidity of the frame 1, which is conducive to reducing the weight of the entire vehicle; the free end of the right footrest rod 6 is provided with a second rope interface 6-3, and the end of the rope 14 is connected to the free end of the right footrest rod 6; the driving wheel shaft 8 is fixedly connected to the driving wheel mounting arm 1-8 arranged at the rear end of the frame 1, and the driving wheel 9 is hinged to the driving wheel shaft 8 through a pair of first bearings 23 or two circles of steel balls.

[0365] In Example 25, the rope winding ring 13 transmits a one-way transmission to the driving wheel 9 through the rope winding inner ring 97 and the ratchet 11; the rope winding inner ring 97 is fixedly connected to the driving wheel 9, and the rope winding inner ring 97 is composed of an inner ring body 97-1 and an inner ring cover 97-2. The rope winding ring 13 is hinged to the rope winding inner ring 97 through two circles of small steel balls 98; the outer circumference of the rope winding inner ring 97 is processed with a second ratchet hole 97-3, and the ratchet 11 is installed in the second ratchet hole 97-3 through an annular spring 12; the inner circumference of the rope winding ring 13 A second ratchet tooth 13-10 is processed; the pawl 11 is engaged with the second ratchet tooth 13-10, so that the rope ring 13 can only rotate in one direction relative to the rope inner ring 97; a rope winding area 13-9 for winding the rope 14 is provided on the right side of the circumferential surface of the rope ring 13, and a first rope winding interface 13-3 for connecting the rope 14 is provided; a soft wire winding area 13-7 for winding the soft wire 16 is provided on the left side of the circumferential surface of the rope ring 13, and a soft wire interface 13-4 for connecting the soft wire 16 is provided.

[0366] In Example 25, a second transverse axis tube 1-24 is provided below the center axis tube 1-2; a second foot brake device is provided at the rear and lower part of the second transverse axis tube 1-24, and the second foot brake device comprises: a second brake transverse axis 100 hinged to the second transverse axis tube 1-24 through a pair of seventh bearings 99 (or two circles of steel balls), a second brake arm 101 fixed to the left end of the second brake transverse axis 100, a brake pad 102 installed on the inner side of the free end of the second brake arm 101, and a brake return spring 64 connected between the second brake arm 101 and the frame 1; a top tube 101-2 is provided at the hinged end of the second brake arm 101, and the brake return spring 64 tends to swing the free end of the second brake arm 101 pointing rearward and downward upward, so that the top tube 1 01-2 upper end is pressed forward against the middle axis tube 1-2; when the upper end of the top tube 101-2 is pressed against the middle axis tube 1-2, the free end of the second brake arm 101 points to the driving wheel steel rim 9-2 close to the ground, and the brake pad 102 is located 2-8 mm above the driving wheel steel rim 9-2; a brake pad base 101-1 is provided on the inner side of the free end of the second brake arm 101, and the upper end of the brake pad 102 is embedded in the brake pad base 101-1; a cross bar 101-3 is provided on the outer side of the free end of the second brake arm 101. When the free end of the pedal rod 6 swings downward to a lower point, it will push the cross bar 101-3 downward, causing the free end of the second brake arm 101 to swing downward and the brake pad 102 to press the driving wheel steel rim 9-2 downward, thereby automatically completing the braking process.

[0367] In Example 25, the reset device can be composed of a soft wire 16 and a reset spring 17, one end of the soft wire 16 is connected to the rope ring 13, and the other end is connected to the reset spring 17, and the other end of the reset spring 17 is connected to the vehicle seat 19; or, the reset device can also be composed of only the reset spring 17, and the reset spring 17 can be a tension spring, one end of the reset spring 17 is connected to the rope ring 13, and the other end is connected to the vehicle seat 29.

[0368] Example 26: Please refer to Figures 204-216. Example 26 is basically the same as Example 25. The main difference is that in Example 26, the driving wheel shaft 8 is hinged to the end of the driving wheel mounting arm 1-8 arranged at the rear end of the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixed to the driving wheel shaft 8; the right end of the driving wheel shaft 8 extends to the right side of the driving wheel mounting arm 1-8, and the rope inner ring 97 is fixed to the right end of the driving wheel shaft 8; the right side of the circumferential surface of the rope ring 13 is provided with a spiral groove 13-2 for spirally winding the rope 14, and the head end of the spiral groove 13-2 is provided with a first rope interface 13-3 for connecting the rope 14; the left side of the circumferential surface of the rope ring 13 is provided with a soft wire winding area 13-7 for winding the soft wire 16, and a soft wire interface 13-4 for connecting the soft wire 16 is provided.

[0369] In Example 26, a speed regulating mechanism is provided at the free end of the right pedal rod 6, and the speed regulating mechanism includes: a slide rail 6-12 provided on the pedal rod 6, a slide tube 19 sleeved on the slide rail 6-12 and movable along the slide rail 6-12, a positioning switch 20 for locking the slide tube 19 at different gears of the slide rail 6-12, and a return torsion spring 21 tending to put the positioning switch 20 in a closed state; a plurality of locking recesses 6-13 are provided on the pedal rod 6 at predetermined intervals, the positioning switch 20 is hinged to the slide tube 19; the return torsion spring 21 is connected between the slide tube 19 and the positioning switch 20; the positioning switch 20 is provided with a lock tongue 20-3, and the return torsion spring 21 tends to make the lock tongue 20-3 moved to any locking recess 6-13 extend into the locking recess 6-13; The free end of the positioning switch 20 is provided with a lever 20-2; when the lever 20-2 is toggled, the positioning switch 20 rotates against the reset torsion spring 21, the lock tongue 20-3 disengages from the locking recess 6-13, and the slide tube 19 can move to another gear position along the slide rail 6-12; a rope joint 19-3 is hingedly connected to the slide tube 19 through a joint shaft 19-4, and the rope joint 19-3 is provided with a third rope interface 19-1, and the end of the rope 14 is connected to the slide tube 19 through the rope joint 19-3; the right surface of the slide tube 19 is provided with an anti-slip nail 19-5. When the inner side of the sole presses the anti-slip nail 19-5 and the lever 20-2 at the same time, causing the positioning switch 20 to rotate against the reset torsion spring 21 and the lock tongue 20-3 to disengage from the locking recess 6-13, the slide tube 19 can be pushed to another gear position along the slide rail 6-12.

[0370] Example 27: Referring to Figures 217-226, Example 27 is essentially the same as Example 25, differing primarily in that Example 27 includes two transmission mechanisms, disposed on either side of the drive wheel 9. Two front and rear center axle tubes 1-2 are arranged side by side at the lower middle end of the frame 1, each hingedly connected to a first pedal center axle 5. A pedal rod 6 is fixedly attached to the outer ends of the two front and rear first pedal center axles 5. The free ends of the pedal rods 6 face rearward. When the free ends of the pedal rods 6 are at the highest point of pedaling due to the combined forces of the return spring 17 and the winding rope 14, the free ends of the pedal rods 6 abut against the winding rope ring 13. The seat 29 is positioned directly above or above the rear of the drive wheel axle 8. This significantly reduces the overall length of the vehicle without affecting its performance. Each pedal rod 6 is provided with two front and rear pedals 7 at its free end; these pedals 7 correspond to the sole and heel of the foot, respectively. Thus, during the first two-thirds of the pedaling stroke, the heel can be used primarily to generate force to achieve greater torque. When the knee joint is about to straighten, the ankle joint generates force, completing the last third of the pedaling stroke with the sole of the foot. This significantly reduces the height of the foot lift during each pedaling stroke, making it easy to achieve a higher pedaling frequency. This automatically provides two driving gears: on an uphill section, whenever the knee joint is about to straighten, the leg is immediately lifted to begin the next pedaling stroke, using the heel to generate force throughout the entire pedaling stroke, always pedaling at maximum torque to achieve greater forward momentum. The pedal 7 corresponding to the sole of the foot is hinged to the pedal rod 6, while the pedal 7 corresponding to the heel is fixed to the pedal rod 6. A second rope interface 6-3 is provided at the free end of the pedal rod 6, and the end of the rope 14 is connected to the free end of the pedal rod 6 on the same side. The effective length of the left pedal rod 6 is approximately 32 cm, and the effective length of the right pedal rod 6 is approximately 36 cm. During a pedaling cycle, the pedal rod 6 swings through an angle of approximately 42 degrees, corresponding to a pedaling travel of approximately 25 cm at the heel of the pedal 7. Throughout the pedaling process, the torque is close to maximum, and the energy utilization rate is approximately 97%. The winding rope 14 uses a non-closed chain (not connected end to end).

[0371] In Example 27, three pairs of pawls 11 are installed on the outer circumference of the rope winding inner ring 97; the positions of the three pairs of pawls 11 relative to the second ratchet teeth 13-10 are staggered, that is, when the free ends of one pair of pawls 11 are against the front side of the second ratchet teeth 13-10-1, the free ends of the other two pairs of pawls 11 are respectively pressed against different positions of the inclined surface of the second ratchet teeth 13-10-2; the second ratchet teeth 13-10 arranged on the inner circumference of the rope winding ring 13 have a pitch of about 3 mm; therefore, when the free end of the pedal rod 6 is changed from automatically rebounding upward to being stepped down, the rope winding ring 13 will drive the rope winding inner ring 97 to rotate through one pair of pawls 11 within a distance less than one-third of the pitch of its second ratchet teeth 13-10 (i.e. less than 1 mm), thereby greatly reducing the positive idling amplitude of the rope winding ring 13.

[0372] A soft wire stop edge 13-11 is provided on the inner side of the circumferential surface of the rope winding ring 13, and the circumferential surface of the rope winding ring 13 adjacent to the soft wire stop edge 13-11 is a soft wire winding area 13-7, and a soft wire interface 13-4 is provided at the soft wire winding area 13-7; the outer side of the soft wire winding area 13-7 is a rope winding area 13-9, and a first rope winding interface 13-3 is provided at the rope winding area 13-9.

[0373] A circular ring 6-15 is provided on the outer side of the free end of the pedal rod 6, and a third foot brake device is installed on the circular ring 6-15. The third foot brake device includes: a friction inner ring 103 fixed to the circular ring 6-15, a friction middle ring 104 sleeved on the friction inner ring 103, and a rubber outer ring 105 fixed to the outer circumferential surface of the friction middle ring 104; the friction middle ring 104 is provided with a retaining edge 104-1 to prevent it from moving outward from the friction inner ring 103; when the free end of the pedal rod 6 is stepped on to below the normal stepping low point, When the rubber outer ring 105 touches the road surface and rolls along the road surface, sliding friction is generated between the friction middle ring 104 and the friction inner ring 103; since the whole body weight acts on the friction middle ring 104 and the rubber outer ring 105 through the free end of the pedal rod 6 and the friction inner ring 103, and directly acts on the ground through the friction middle ring 104 and the rubber outer ring 105, although the friction middle ring 104 and the rubber outer ring 105 are very small and very light, they can have an excellent braking effect and can replace the front and rear brake systems of a bicycle.

[0374] Example 28: Please refer to Figures 227-232. Example 28 is basically the same as Example 27. The main difference is that in Example 28, only one set of transmission mechanism is provided, which is arranged on the right side of the driving wheel 9; in addition, in Example 28, the driving wheel mounting arm 1-8 arranged at the rear end of the frame 1, its end extends rearward to the rear of the driving wheel 9, and the rear end of the driving wheel mounting arm 1-8 is connected through the tail rod 1-25; at the bottom of the tail rod 1-25, a pedal base 1-19 is provided; the pedal device consists of a pedal rod 6 extending from the rear of the driving wheel 9 to the front of the driving wheel 9, and a pedal 7 fixed to the front end of the pedal rod 6; a transverse tube 6-8 is provided at the rear end of the pedal rod 6, and a pair of fifth bearings 83 are installed at both ends of the transverse tube 6-8. The transverse tube 6-8 is hinged to the pedal base 1-19 through a pair of fifth bearings 83 and a third pedal center axis 84; the end of the winding rope 14 is connected to the longitudinal middle part or the middle front part of the pedal rod 6.

[0375] A ring 6-15 is provided on the inner side of the front portion of the pedal rod 6, and a third foot brake device is installed on the ring 6-15. The third foot brake device includes: a friction inner ring 103 fixed to the ring 6-15, a friction middle ring 104 sleeved on the friction inner ring 103, and a rubber outer ring 105 fixed to the outer circumferential surface of the friction middle ring 104; the friction middle ring 104 is provided with a retaining edge 104-1 to prevent it from moving to the outside of the friction inner ring 103, and a retaining edge 104-1 is provided on the ring 6-15 to prevent the friction middle ring from moving. The stopper 6-16 of the ring 104 moves toward the inner side of the friction inner ring 103; the lateral position of the rubber outer ring 105 corresponds to the driving wheel steel ring 9-2. When the free end of the pedal rod 6 is stepped on to below the normal stepping low point, the rubber outer ring 105 will be pressed on the driving wheel steel ring 9-2; when the rubber outer ring 105 presses the rotating driving wheel steel ring 9-2, the rubber outer ring 105 rolls along the driving wheel steel ring 9-2, and sliding friction is generated between the friction middle ring 104 and the friction inner ring 103.

[0376] Example 29: Please refer to Figures 233-238. Example 29 is basically the same as Example 27. The main difference is that in Example 29, the driving wheel shaft 8 is hinged to the driving wheel mounting arm 1-8 arranged at the rear end of the frame 1 through a pair of first bearings 23, and the driving wheel 9 is fixed to the driving wheel shaft 8; the two ends of the driving wheel shaft 8 extend outward from the driving wheel mounting arm 1-8; a one-way bearing 106 is provided at each end of the driving wheel shaft 8, and the one-way bearing 106 is located on the outside of the driving wheel mounting arm 1-8; the outer rings of the left and right one-way bearings 106 serve as the left and right rope winding rings 13 in this embodiment; the rope winding ring 13 can only rotate in the opposite direction relative to the inner ring of the one-way bearing 106 (in the attached drawings, the structural features of the one-way bearing are not drawn for the convenience of drawing); winding A soft wire stop 13-11 is provided on the inner side of the circumferential surface of the rope ring 13, and the circumferential surface of the rope ring 13 adjacent to the soft wire stop 13-11 is a soft wire winding area 13-7, and a soft wire interface 13-4 is provided at the soft wire winding area 13-7; the outer side of the soft wire winding area 13-7 is a rope winding area 13-9, and a first rope winding interface 13-3 is provided at the rope winding area 13-9; the frame 1 is provided with a central axis tube 1-2, and two left and right first pedal central axes 5 are hinged side by side in the central axis tube 1-2; a pedal rod 6 is fixed to the outer ends of the left and right first pedal central axes 5; the free end of the pedal rod 6 faces rearward; when the free end of the pedal rod 6 stays at the pedaling high point under the combined action of the return spring 17 and the tension of the rope 14, the free end of the pedal rod 6 extends to the rear and above the axis of the drive wheel shaft 8.

[0377] With the pedal 7 located in the front as the dividing point, the rear end of the pedal rod 6 is slightly bent upward so that the free end of the pedal rod 6 can be stepped on lower; a second rope interface 6-3 is provided in the longitudinal middle or front or rear portion of the inner side of the pedal rod 6, and the end of the rope 14 is connected to the second rope interface 6-3; between the second rope interface 6-3 and the free end of the pedal rod 6, a gear-engaging protrusion 6-14 is provided; the lateral position of the gear-engaging protrusion 6-14 corresponds to the rope 14, and the top of the gear-engaging protrusion 6-14 is a sloped surface; when the rope 14 is located above the gear-engaging protrusion 6-14, it is a low-speed gear, and the rope 14 is not in contact with the gear-engaging protrusion 6-14 When the speed is adjusted from high to low, when the free end of the pedal rod 6 is at the low point of pedaling, the rope 14 is dialed with the inside of the sole of the foot, so that the rope 14 slides out from the bottom of the gear bump 6-14 to the inside, thereby breaking away from the restraint of the gear bump 6-14; when the speed is adjusted from low to high, when the free end of the pedal rod 6 is at the low point of pedaling, the sole of the foot quickly moves toward the outside of the foot pedal 7, and the free end of the pedal rod 6 will quickly rebound upward under the action of the spring force of the reset device, and greatly exceeds the rebound height during normal pedaling, and causes the rope 14 to move along When the pedals are engaged, the user slides along the top slope of the gear-engaging protrusion 6-14 to the bottom of the gear-engaging protrusion 6-14; when the pedals are engaged again, the winding rope 14 will be hung under the gear-engaging protrusion 6-14; thereby automatically completing the adjustment from the low-speed gear to the high-speed gear; therefore, the two driving gears automatically possessed by the front and rear pedals 7 are multiplied by 2, which is equivalent to automatically having four driving gears without setting a speed regulating mechanism; in addition, the pedaling frequency is more than 80% higher than that of a bicycle, so there is no need to set a speed regulating mechanism; the winding rope 14 is composed of two parts: a chain 14-1 and a hard steel wire 14-2.

[0378] Industrial Applicability: This application belongs to the field of transportation and is used for transportation. It can be used as a green and environmentally friendly transportation tool to replace existing bicycles and some two-wheeled electric vehicles.

[0379] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0380] The above-described embodiments represent only some of the embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be based on the appended claims.

Claims

1. A walking vehicle, comprising a vehicle frame (1) and a pedal device, wherein the vehicle frame (1) comprises a vehicle frame head tube (1-1) arranged at the front end or the rear end, a steering wheel bracket (2) is hingedly connected inside the vehicle frame head tube (1-1), and a steering wheel (3) is installed at the lower end of the steering wheel bracket (2); a driving wheel (9) and a driving wheel shaft (8) are arranged at the rear end or the front end of the vehicle frame (1); between the pedal device and the driving wheel (9), one or two groups of transmission mechanisms are arranged, which drive the driving wheel (9) to rotate by stepping on the pedal device; each group of the transmission mechanisms The transmission mechanism comprises a rope winding ring (13) which is hinged to the driving wheel (9) or the driving wheel shaft (8) and can unidirectionally drive the driving wheel (9) or the driving wheel shaft (8) in the forward direction, a rope winding ring (14) which is connected between the rope winding ring (13) and the pedal device and can wind around the rope winding ring (13), and a set of reset devices which are connected to the rope winding ring (13) and can drive the rope winding ring (13) to rotate in the reverse direction, so that the rope winding ring (14) can cyclically wind around the rope winding ring (13).

2. The walking vehicle according to claim 1, wherein: The driving wheel shaft (8) is hinged to the frame (1) through a pair of first bearings (23); the driving wheel (9) is fixedly connected to the driving wheel shaft (8); the rope winding ring (13) is hinged to the driving wheel shaft (8) through two circles of steel balls (24) or a pair of bearings; the rope winding ring (13) transmits unidirectional transmission to the driving wheel shaft (8) through a ratchet (10) and a ratchet pawl (11); the ratchet (10) is connected to the driving wheel shaft (8) or the driving wheel (9) are fixedly connected, the rope winding ring (13) is processed with a first pawl hole (13-1) at one end facing the ratchet wheel (10), a pawl (11) is installed in the first pawl hole (13-1) through an annular spring (12), the first pawl hole (13-1) extends into the ratchet wheel (10), the pawl (11) is meshed with the ratchet wheel (10), so that the rope winding ring (13) can only rotate in one direction relative to the driving wheel shaft (8).

3. The walking vehicle according to claim 1, wherein: The driving wheel shaft (8) is hinged to the frame (1) through a pair of first bearings (23); the driving wheel (9) is fixedly connected to the driving wheel shaft (8); the rope winding ring (13) transmits one-way transmission to the driving wheel shaft (8) through a rope winding inner ring (97) and a ratchet (11); the rope winding inner ring (97) is fixedly connected to the driving wheel shaft (8); the rope winding ring (13) is hinged to the rope winding inner ring (97) through two circles of small steel balls (98). The outer circumferential surface of the rope winding inner ring (97) is processed with a second ratchet hole (97-3), and a ratchet (11) is installed in the second ratchet hole (97-3) through an annular spring (12); the inner circumferential surface of the rope winding ring (13) is processed with second ratchet teeth (13-10); the ratchet (11) is meshed with the second ratchet teeth (13-10), so that the rope winding ring (13) can only rotate in one direction relative to the rope winding inner ring (97).

4. The walking vehicle according to claim 1, wherein: The driving wheel shaft (8) is fixedly connected to the frame (1); the driving wheel (9) is hingedly connected to the driving wheel shaft (8) via a pair of first bearings (23); the rope winding ring (13) transmits unidirectional transmission to the driving wheel (9) via a rope winding inner ring (97) and a ratchet (11); the rope winding inner ring (97) is fixedly connected to the driving wheel (9); the rope winding ring (13) is hingedly connected to the rope winding inner ring (97) via two circles of small steel balls (98) ; A second pawl hole (97-3) is processed on the outer circumferential surface of the rope winding inner ring (97), and a pawl (11) is installed in the second pawl hole (97-3) through an annular spring (12); a second ratchet tooth (13-10) is processed on the inner circumferential surface of the rope winding ring (13); the pawl (11) is meshed with the second ratchet tooth (13-10), so that the rope winding ring (13) can only rotate in one direction relative to the rope winding inner ring (97).

5. The walking vehicle according to claim 1, wherein: The driving wheel shaft (8) is hinged to the frame (1) via a pair of first bearings (23), and the driving wheel (9) is fixedly connected to the driving wheel shaft (8); the rope winding ring (13) is the outer bearing ring of the one-way bearing (106), and the inner bearing ring of the one-way bearing (106) is fixedly connected to the driving wheel shaft (8).

6. The walking vehicle according to claim 1, wherein: The driving wheel shaft (8) is fixedly connected to the frame (1), and the driving wheel (9) is hingedly connected to the driving wheel shaft (8) via a pair of first bearings (23); the rope winding ring (13) is the outer bearing ring of the one-way bearing (106), and the inner bearing ring of the one-way bearing (106) is fixedly connected to the driving wheel (9).

7. The walking vehicle according to claim 1, wherein: The reset device is composed of a soft wire (16) and a reset spring (17); one end of the soft wire (16) is connected to the rope winding ring (13) and the other end is connected to the reset spring (17); the other end of the reset spring (17) is connected to the vehicle body; the rope winding ring (13) is provided with a soft wire winding area (13-7) for winding the soft wire (16), and is provided with a soft wire interface (13-4) for connecting the soft wire (16).

8. The walking vehicle according to claim 1, wherein: The reset device is composed of a reset spring (17), one end of the reset spring (17) is connected to the rope winding ring (13), and the other end is connected to the vehicle body; the rope winding ring (13) is provided with a soft wire winding area (13-7) for winding the reset spring (17), and is provided with a soft wire interface (13-4) for connecting the reset spring (17).

9. The walking vehicle according to claim 1, wherein: The outer circumferential surface of the rope winding ring (13) is provided with a rope winding area (13-9) for winding the rope (14), and is provided with a first rope winding interface (13-3) for connecting the rope (14).

10. The walking vehicle according to claim 1, wherein: The rope winding ring (13) is provided with a spiral groove (13-2) for spirally winding the rope (14), and is provided with a first rope winding interface (13-3) for connecting the rope (14), and the first rope winding interface (13-3) is arranged at the head end of the spiral groove (13-2).

11. The walking vehicle according to claim 1, wherein: The transmission mechanism comprises two groups, left and right; the frame (1) is provided with a central axis tube (1-2), and two left and right first pedal central axes (5) are hingedly connected inside the central axis tube (1-2); the pedal device comprises: two left and right pedal rods (6) respectively fixed to the outer ends of the two left and right first pedal central axes (5), and pedals (7) arranged at the free ends of the two left and right pedal rods (6); the end of the winding rope (14) is connected to the free end of the pedal rod (6) on the same side.

12. The walking vehicle according to claim 1, wherein: The transmission mechanism comprises two left and right groups; the frame (1) is provided with two front and rear center axis tubes (1-2) side by side, and a first pedal center axis (5) is hinged in each of the center axis tubes (1-2); the pedal device comprises: two left and right pedal rods (6) respectively fixed to the outer ends of the two front and rear first pedal center axes (5), and pedals (7) provided at the free ends of the two left and right pedal rods (6); the end of the winding rope (14) is connected to the free end of the pedal rod (6) on the same side.

13. The walking vehicle according to claim 1, wherein: The transmission mechanism is a group and is arranged on the right side of the driving wheel (9); the frame (1) is provided with a middle axis tube (1-2), a second pedal middle axis (75) is hinged in the middle axis tube (1-2), and the pedal device comprises: two left and right pedal rods (6) respectively fixed to the two ends of the second pedal middle axis (75), and a pedal (7) arranged at the free ends of the two left and right pedal rods (6); the two left and right pedal rods (6) are arranged in a left-right symmetrical manner; the end of the winding rope (14) is connected to the free end of the right pedal rod (6).

14. The walking vehicle according to claim 13, wherein: The two left and right pedal rods (6) are connected into a whole through two middle transverse pipes (6-11).

15. The walking vehicle according to claim 1, wherein: The transmission mechanism is a group and is arranged on the right side of the driving wheel (9); the frame (1) is provided with a pedal base (1-19); the pedal device comprises a pedal rod (6), one end of the pedal rod (6) is provided with a transverse tube (6-8), both ends of the transverse tube (6-8) are installed with a pair of fifth bearings (83), the transverse tube (6-8) is hinged with the pedal base (1-19) through the pair of fifth bearings (83) and a third pedal middle axis (84); a pedal board (7) is arranged at the free end of the pedal rod (6); the end of the winding rope (14) is connected to the free end of the pedal rod (6).

16. The walking vehicle according to claim 15, wherein: The frame (1) comprises a driving wheel mounting arm (1-8) located at the rear end, the rear end of the driving wheel mounting arm (1-8) extending backward to the rear of the driving wheel (9), and the rear end of the driving wheel mounting arm (1-8) is connected via a tail rod (1-25); the pedal base (1-19) is arranged at the bottom of the tail rod (1-25), the cross tube (6-8) is arranged at the rear end of the pedal rod (6), the front end of the pedal rod (6) extends forward to the front of the driving wheel (9), and the pedal (7) is arranged at the front end of the pedal rod (6); the end of the winding rope (14) is connected to the longitudinal middle part or the middle front part of the pedal rod (6).

17. The walking vehicle according to claim 1, wherein: The transmission mechanism is divided into two groups, left and right; the pedal device is composed of two left and right pedals (70), each of which is provided with a fourth rope winding interface (70-1), and the end of the rope (14) is connected to the pedal (70) on the same side through the fourth rope winding interface (70-1).

18. The walking vehicle according to claim 17, wherein: The frame (1) is provided with a pair of guide grooves (1-14) in front of both ends of the driving wheel shaft (8), and each of the pedals (70) is provided with a plurality of first small pulleys (73), and the first small pulleys (73) extend into the guide grooves (1-14), so that the pedals (70) and the first small pulleys (73) can move up and down along a track determined by the guide grooves (1-14).

19. The walking vehicle according to claim 1, wherein: The transmission mechanism comprises two groups, left and right; the frame (1) comprises a frame longitudinal beam (1-7), and a pair of first fixed pulleys (15) are arranged on both sides of the frame longitudinal beam (1-7) at an appropriate distance in front of the driving wheel (9); the pedal device is composed of a first bidirectional pedal rod (76); two left and right fifth rope winding interfaces (76-1) are arranged in the middle of the first bidirectional pedal rod (76), and the spacing between the two fifth rope winding interfaces (76-1) is equal to the spacing between the pair of first fixed pulleys (15); the end of the rope (14) passes through the first fixed pulley (15) on the same side and is connected to the fifth rope winding interface (76-1) on the same side.

20. The walking vehicle according to claim 1, wherein: The transmission mechanism is a group; the frame (1) includes a frame longitudinal beam (1-7), and a first fixed pulley (15) is provided below the frame longitudinal beam (1-7) at an appropriate distance in front of the driving wheel (9); the pedal device is composed of a second bidirectional pedal rod (77); a sixth rope winding interface (77-1) is provided in the middle of the second bidirectional pedal rod (77); the end of the rope (14) is connected to the sixth rope winding interface (77-1) through the first fixed pulley (15).

21. The walking vehicle according to claim 20, wherein: An eight-shaped joint (77-2) is provided in the middle of the second bidirectional pedal rod (77), and the sixth rope winding interface (77-1) is arranged at the top of the eight-shaped joint (77-2); a limiting ring (1-16) for limiting the upward movement range of the second bidirectional pedal rod (77) is provided below the frame longitudinal beam (1-7) and corresponding to the top of the eight-shaped joint (77-2); when the second bidirectional pedal rod (77) stops being stepped on and the eight-shaped joint (77-2) extends into and is close to the limiting ring (1-16), the limiting ring (1-16) makes the two ends of the second bidirectional pedal rod (77) point to the left and right sides respectively.

22. The walking vehicle according to claim 20, wherein: A 7-shaped joint (77-3) is provided in the middle of the second bidirectional pedal rod (77), and the sixth rope winding interface (77-1) is arranged at the top of the 7-shaped joint (77-3); a limiting groove (1-20) for limiting the upward movement range of the second bidirectional pedal rod (77) is provided below the frame longitudinal beam (1-7) and corresponds to the top of the 7-shaped joint (77-3), and the cross section of the limiting groove (1-20) is in an 8-shaped shape; when the second bidirectional pedal rod (77) stops being stepped on and the 7-shaped joint (77-3) extends into and is close to the limiting groove (1-20), the limiting groove (1-20 makes the two ends of the second bidirectional pedal rod (77) point to the left and right sides respectively.

23. The walking vehicle according to claim 20, wherein: A vertical tube (1-17) is provided below the frame longitudinal beam (1-7) and adjacent to the second bidirectional pedal rod (77). When both feet step downward on the second bidirectional pedal rod (77), the inner side of the sole of the foot can step downward along the vertical tube (1-17).

24. The walking vehicle of claim 1, wherein: The transmission mechanism is a group; the frame (1) comprises a frame longitudinal beam (1-7), and a first fixed pulley (15) is provided below the frame longitudinal beam (1-7) at an appropriate distance in front of the driving wheel (9); a vertical slide rail (1-21) is provided below the frame longitudinal beam (1-7) and in front of the first fixed pulley (15), and the vertical slide rail (1-21) is provided with two front and rear pulley grooves (1-22); a small slide tube (87) is sleeved on the vertical slide rail (1-21); a third small pulley (88) is hingedly connected to the middle part of the rear side of the small slide tube (87), and a third small pulley (88) is hingedly connected to the upper and lower ends of the front side of the small slide tube (87); when the small slide tube (87) moves up and down, each of the third small pulleys (88) The small slide tube (87) rolls along the tracks determined by the front and rear pulley grooves (1-22); the lower end of the small slide tube (87) is provided with four steel wire interfaces (87-2); below the small slide tube (87), an annular pedal rod (89) is connected through four soft steel wires (90); the middle part of the annular pedal rod (89) is provided with four second steel wire interfaces (89-1) arranged in a rectangular shape; the upper ends of the four soft steel wires (90) are respectively connected to the four steel wire interfaces (87-2); the lower ends of the four soft steel wires (90) are respectively connected to the four second steel wire interfaces (89-1); at the upper end of the small slide tube (87), a seventh rope winding interface (87-1) is provided, and the end of the rope winding (14) is connected to the seventh rope winding interface (87-1) through the first fixed pulley (15).

25. The walking vehicle of claim 2, wherein: The rope winding ring (13) is provided with a sealing wall (13-6) in close contact with the first ratchet hole (13-1), and the ratchet wheel (10) is provided with a sealing edge (10-3) on a side facing the rope winding ring (13), and the lateral position of the sealing wall (13-6) corresponds to the sealing edge (10-3).

26. The walking vehicle according to claim 11, 12 or 13, wherein: The free end of the pedal rod (6) faces backwards; when the free end of the pedal rod (6) stays at the pedaling high point under the combined action of the resetting device and the pulling force of the winding rope (14), the free end of the pedal rod (6) is close to the winding rope ring (13) or extends to the rear of the axis of the driving wheel shaft (8).

27. The walking vehicle of claim 26, wherein: The free end of the pedal rod (6) is provided with two front and rear foot pedals (7), and the front and rear foot pedals (7) correspond to the sole and heel of the foot respectively.

28. The walking vehicle of claim 27, wherein: The foot pedal (7) corresponding to the sole of the foot is hinged to the foot pedal rod (6), and the foot pedal (7) corresponding to the heel of the foot is fixedly connected to the foot pedal rod (6).

29. The walking vehicle of claim 26, wherein: A second rope winding interface (6-3) is provided in the longitudinal middle part, the middle front part or the middle rear part of the inner side surface of the pedal rod (6), and the end of the rope winding (14) is connected to the second rope winding interface (6-3); a gear engaging protrusion (6-14) is provided between the second rope winding interface (6-3) and the free end of the pedal rod (6); the lateral position of the gear engaging protrusion (6-14) corresponds to the rope winding (14); the top of the gear engaging protrusion (6-14) is a slope surface; when the free end of the pedal rod (6) swings upward to exceed a certain height, the rope winding (14) will be moved along the top of the gear engaging protrusion (6-14) When the slope surface slides to the bottom of the gear-engaging protrusion (6-14), and when the pedal is stepped on again, the winding rope (14) will be hung under the gear-engaging protrusion (6-14), and the gear is in a high-speed gear position at this time; in the high-speed gear position, when the free end of the pedal rod (6) is located at a lower point, the winding rope (14) is moved with the inner side of the sole of the foot, so that the winding rope (14) hung under the bottom of the gear-engaging protrusion (6-14) slides out from the bottom of the gear-engaging protrusion (6-14) to the inside, thereby breaking away from the restraint of the gear-engaging protrusion (6-14), the winding rope (14) is directly connected to the second winding rope interface (6-3), and the gear is in a low-speed gear position at this time.

30. The walking vehicle of claim 26, wherein: The free end of the pedal rod (6) is provided with a third foot brake device, the third foot brake device comprising: a friction inner ring (103) fixedly connected to the free end of the pedal rod (6), a friction middle ring (104) sleeved on the friction inner ring (103), rotatable around the friction inner ring (103) and unable to move left and right relative to the friction inner ring (103), and a rubber outer ring (105) fixedly connected to the outer circumferential surface of the friction middle ring (104).

31. The walking vehicle of claim 30, wherein: The friction inner ring (103) is fixedly connected to the outer side of the free end of the pedal rod (6); when the free end of the pedal rod (6) is stepped on to a position below the normal stepping low point, the rubber outer ring (105) touches the road surface and rolls along the road surface, and sliding friction is generated between the friction middle ring (104) and the friction inner ring (103).

32. The walking vehicle of claim 30, wherein: The friction inner ring (103) is fixed to the inner side of the free end of the pedal rod (6), and the lateral position of the rubber outer ring (105) corresponds to the driving wheel steel ring (9-2); when the free end of the pedal rod (6) is stepped on to a position below the normal stepping low point, the rubber outer ring (105) will press on the driving wheel steel ring (9-2); when the rubber outer ring (105) presses the rotating driving wheel steel ring (9-2), the rubber outer ring (105) rolls along the driving wheel steel ring (9-2), and sliding friction is generated between the friction middle ring (104) and the friction inner ring (103).

33. The walking vehicle of claim 16, wherein: The front middle portion of the pedal rod (6) is provided with a third foot brake device, the third foot brake device comprising: a friction inner ring (103) fixedly connected to the inner side of the front middle portion of the pedal rod (6), a friction middle ring (104) sleeved on the friction inner ring (103), rotatable around the friction inner ring (103) and immovable relative to the friction inner ring (103), and a rubber outer ring (105) fixedly connected to the outer circumferential surface of the friction middle ring (104); the rubber outer ring (105) The lateral position of the pedal rod (105) corresponds to the driving wheel steel ring (9-2); when the free end of the pedal rod (6) is stepped on to a position below the normal stepping low point, the rubber outer ring (105) will be pressed on the driving wheel steel ring (9-2); when the rubber outer ring (105) presses the rotating driving wheel steel ring (9-2), the rubber outer ring (105) rolls along the driving wheel steel ring (9-2), and sliding friction is generated between the friction middle ring (104) and the friction inner ring (103).

34. The walking vehicle of claim 26, wherein: A second transverse axis tube (1-24) is provided below the central axis tube (1-2); A second foot brake device is provided at the lower rear of the second transverse axis tube (1-24), the second foot brake device comprising: a second brake arm (101) with a free end pointing to the lower rear, a brake pad (102) installed on the inner side of the free end of the second brake arm (101), and a brake return spring (64) connected between the second brake arm (101) and the frame (1); the upper end of the second brake arm (101) is hinged to the frame (1); a top tube (101-2) is provided at the hinged end of the second brake arm (101), the brake return spring (64) tends to make the free end of the second brake arm (101) pointing to the lower rear swing upwards, so that the upper end of the top tube (101-2) is pressed forward against the middle axis tube (1). 1-2); when the upper end of the top tube (101-2) is in close contact with the middle axis tube (1-2), the free end of the second brake arm (101) points to the driving wheel steel rim (9-2) close to the ground, and the brake pad (102) is located 2-8 mm above the driving wheel steel rim (9-2); a cross block (101-3) is provided on the outer side of the free end of the second brake arm (101), and when the free end of the pedal rod (6) is stepped on to below the normal stepping low point, the free end of the pedal rod (6) will push the cross block (101-3) downward, causing the free end of the second brake arm (101) to swing downward, the brake pad (102) to press the driving wheel steel rim (9-2) downward, and prevent the driving wheel (9) from rolling smoothly.

35. The walking vehicle of claim 26, wherein: A seat (29) is provided above the rear end of the frame (1), and the force center of the seat (29) is located directly above or above the rear of the driving wheel shaft (8).

36. The walking vehicle according to claim 4 or 5, wherein: Several pairs of pawls (11) are mounted on the outer circumferential surface of the rope winding inner ring (97); the positions of the pairs of pawls (11) relative to the second ratchet teeth (13-10) are staggered, that is, when the free ends of one pair of the pawls (11) abut against the front face of the second ratchet teeth (13-10-1), the free ends of the remaining pairs of the pawls (11) are respectively pressed against different positions of the inclined surface of the second ratchet teeth (13-10-2).

37. The walking vehicle according to claim 14 or 15, wherein: The left and right foot pedals (7) are hinged to the free end of the foot pedal rod (6) through a shifter (85); the shifter (85) is composed of a pedal transverse axis (85-1) and a pair of shifter arms (85-2) fixed to the middle of the pedal transverse axis (85-1); the ends of the pair of shifter arms (85-2) are hinged to the free end of the foot pedal rod (6) through a fourth transverse axis (86); the left and right foot pedals (7) are respectively hinged to the two ends of the pedal transverse axis (85-1).

38. The walking vehicle of claim 37, wherein: The free end of the pedal rod (6) is bent upward, and a circular arc corner (6-5) is formed at the bending position, which matches the central circumferential surface of the pedal transverse axis (85-1); at the end of the free end of the pedal rod (6), a circular arc recess (6-6) is processed to match the central circumferential surface of the pedal transverse axis (85-1); between the circular arc corner (6-5) and the circular arc recess (6-6), a pair of hinged plates (6-7) are provided; the ends of the pair of gear adjustment arms (85-2) are hinged to the hinged plates (6-7) through the fourth transverse axis (86); the pedal transverse axis (85-1) can swing to be close to the circular arc corner (6-5) or the circular arc recess (6-6), thereby completing the mutual conversion between the high gear and the low gear.

39. The walking vehicle according to any one of claims 11 to 15, wherein: The pedal rod (6) is provided with a rope-winding connecting arm (6-9), and the end of the rope-winding (14) is connected to the free end of the rope-winding connecting arm (6-9).

40. The walking vehicle of claim 39, wherein: The free end of the pedal rod (6) faces forward; when the free end of the pedal rod (6) points to the front, the free end of the rope-winding connecting arm (6-9) points upward; when the free end of the pedal rod (6) swings downward, the free end of the rope-winding connecting arm (6-9) pulls the end of the rope-winding (14) forward, driving the rope-winding ring (13) to rotate.

41. The walking vehicle of claim 39, wherein: The free end of the pedal rod (6) faces rearward; when the free end of the pedal rod (6) points directly rearward, the free end of the rope-winding connecting arm (6-9) points downward; when the free end of the pedal rod (6) swings downward, the free end of the rope-winding connecting arm (6-9) pulls the end of the rope-winding (14) forward, driving the rope-winding ring (13) to rotate.

42. The walking vehicle of claim 39, wherein: The winding rope (14) is composed of a chain (14-1) and a hard steel wire (14-2). The chain (14-1) is used for the end that needs to be wound around the winding rope ring (13), and the hard steel wire (14-2) is not used for the end that does not need to be wound around the winding rope ring (13). The head end of the chain (14-1) is connected to the winding rope ring (13), and the end of the hard steel wire (14-2) is connected to the free end of the winding rope connecting arm (6-9).

43. The walking vehicle according to any one of claims 11 to 16, wherein: The free end of the pedal rod (6) is provided with a speed regulating mechanism, which comprises: a slide rail (6-12) arranged on the pedal rod (6), a slide tube (19) sleeved on the slide rail (6-12) and movable along the slide rail (6-12), a positioning switch (20) for locking the slide tube (19) at different gear positions, and a return torsion spring (21) tending to put the positioning switch (20) in a closed state; a third rope winding interface (19-1) is arranged on the slide tube (19), and the end of the rope winding (14) is connected to the slide tube (19).

44. The walking vehicle of claim 43, wherein: The positioning switch (20) is hinged with the pedal rod (6); a lever (20-2) and a plurality of limit stops (20-1) are provided at the free end of the positioning switch (20); when the number of the limit stops (20-1) is two or more, the spacing between adjacent limit stops (20-1) is adapted to the length of the slide tube (19); the return torsion spring (21) tends to make the end of the limit stop (20-1) close to the slide rail (6-12) and prevent the slide tube (19) from moving along the slide rail (6-12); when the lever (20-2) is moved, the positioning switch (20) rotates in the opposite direction of the return torsion spring (21), the end of the limit stop (20-1) is separated from the slide rail (6-12), and the slide tube (19) moves to another gear position along the slide rail (6-12) under the pulling force of the winding rope (14).

45. The walking vehicle of claim 43, wherein: The pedal rod (6) is provided with a plurality of locking recesses (6-13) at predetermined intervals; the positioning switch (20) is hinged to the slide tube (19); the return torsion spring (21) is connected between the slide tube (19) and the positioning switch (20); the positioning switch (20) is provided with a locking tongue (20-3); the return torsion spring (21) tends to make the locking tongue (20-3) moved to any of the locking recesses (6-13) extend into the locking recess (6-13); a lever (20-2) is provided at the free end of the positioning switch (20); when the lever (20-2) is moved, the positioning switch (20) rotates against the return torsion spring (21), the locking tongue (20-3) is separated from the locking recess (6-13), and the slide tube (19) can move to another gear position along the slide rail (6-12).

46. ​​The walking vehicle of claim 39, wherein: A speed regulating mechanism is provided at the free end of the rope-winding connecting arm (6-9), the speed regulating mechanism comprising a slide rail (6-12) arranged on the rope-winding connecting arm (6-9), a slide tube (19) sleeved on the slide rail (6-12) and movable along the slide rail (6-12), a positioning switch (20) for locking the slide tube (19) at different gear positions, and a return torsion spring (21) connected between the positioning switch (20) and the rope-winding connecting arm (6-9) and tending to put the positioning switch (20) in a closed state; a third rope-winding interface (19-1) is provided on the slide tube (19), and the end of the rope (14) is connected to the slide tube (19); the positioning switch (20) is hingedly connected to the rope-winding connecting arm (6-9) via a switch shaft (22). ; A lever (20-2) and a plurality of limit stops (20-1) are provided at the free end of the positioning switch (20); when the number of the limit stops (20-1) is two or more, the spacing between adjacent limit stops (20-1) is adapted to the length of the slide tube (19); the return torsion spring (21) tends to make the end of the limit stop (20-1) close to the slide rail (6-12) and prevent the slide tube (19) from moving along the slide rail (6-12); when the lever (20-2) is moved, the positioning switch (20) rotates in the opposite direction of the return torsion spring (21), the end of the limit stop (20-1) is separated from the slide rail (6-12), and the slide tube (19) moves to another gear position along the slide rail (6-12) under the pulling force of the winding rope (14).

47. A walking vehicle according to any one of claims 11 to 15, wherein: A first foot brake device is provided at the middle and rear end of the frame (1), the first foot brake device comprising: one or two first brake arms (62) with free ends pointing rearward and downward, and a brake wheel (63) hinged to the free end of the first brake arm (62); the upper end of the first brake arm (62) is hinged to the frame (1); during riding, the brake wheel (63) rolls along the ground; when the free end of the pedal rod (6) swings downward to a predetermined low point, the free end of the pedal rod (6) presses on the corresponding brake wheel (63) to prevent the brake wheel (63) from rolling smoothly, thereby automatically completing the braking process.

48. The walking vehicle of claim 47, wherein: A brake return spring (64) is connected between the first brake arm (62) and the frame (1), and the brake return spring (64) makes the brake wheel (63) hover above the ground at a distance of 1-2 cm from the ground; when the free end of the pedal rod (6) swings downward to a predetermined low point, the free end of the pedal rod (6) just presses on the corresponding brake wheel (63) hovering 1-2 cm above the ground; at this time, when the free end of the pedal rod (6) continues to be stepped on downward, the free end of the pedal rod (6) will push the brake wheel (63) downward, the brake wheel (63) touches the ground and rolls along the ground, and the free end of the pedal rod (6) presses the brake wheel (63) to prevent the brake wheel (63) from rolling smoothly, and the braking process is automatically completed.

49. The walking vehicle according to claim 11 or 12, wherein: In front of the driving wheel shaft (8), one or two gripping wheels (35) are hingedly connected through one or two gripping arms (32) with their free ends pointing to the rear lower or the front lower. The gripping arms (32) are hingedly connected to the vehicle frame (1), and the gripping wheels (35) are hingedly connected to the free ends of the gripping arms (32). The vehicle frame (1) is provided with a limit rod (1-10) for limiting the swing range of the handle end of the gripping arm (32). A strong spring (36) is connected between the gripping arm (32) and the vehicle frame (1). The strong spring (36) tends to make the free end of the gripping arm (32) pointing to the rear lower or front lower swing downward, so that the handle end of the gripping arm (32) leans against the limiting rod (1-10); when the handle end of the gripping arm (32) is in close contact with the limiting rod (1-10) under the action of the strong spring (36), the free end of the gripping arm (32) points to the rear lower or front lower, and the lowest point of the gripping wheel (35) is 0.5-2 cm lower than the line between the lowest point of the driving wheel (9) and the lowest point of the steering wheel (3).

50. The walking vehicle of claim 49, wherein: The gripping arm (32) is a single piece and is disposed at the transverse middle of the frame (1); a first wheel axle (33) is hingedly connected at the free end of the gripping arm (32) via a pair of third bearings (80); a gripping wheel (35) and one or a pair of friction wheels (34) are fixedly connected to the first wheel axle (33); the gripping wheel (35) is fixedly connected to the middle of the first wheel axle (33) and is located between the pair of third bearings (80); the friction wheel (34) is located on the third bearings (80) outside; an extrusion rod (6-1) is provided on the pedal rod (6) on the same side as the friction wheel (34); when the free end of the pedal rod (6) swings downward to a lower point, the extrusion rod (6-1) will press on the friction wheel (34), preventing the friction wheel (34) and the gripping wheel (35) coaxially rotating with the friction wheel (34) from rotating smoothly, automatically completing the braking process; the first wheel shaft (33) has two ends extending outward for parking the heel.

51. The walking vehicle of claim 49, wherein: The gripping arm (32) is a single piece and is arranged at the transverse middle position of the frame (1); a third wheel axle (40-1) is fixedly connected to the free end of the gripping arm (32), and two left and right gripping wheels (35) are hingedly connected to the third wheel axle (40-1); the transverse positions of the left and right gripping wheels (35) correspond to the left and right pedal rods (6) respectively; an eight-shaped extrusion sheet (6-2) is fixedly connected to the bottom of the pedal rod (6); when the free end of the pedal rod (6) swings downward to a lower point, the eight-shaped extrusion sheet (6-2) arranged at the bottom of the pedal rod (6) will be pressed against both sides of the circumferential surface of the gripping wheel (35) to prevent the gripping wheel (35) from rolling smoothly, and the braking process is automatically completed; the two ends of the first wheel axle (33) extend outwards to park the heel.

52. The walking vehicle of claim 49, wherein: The frame (1) comprises a frame longitudinal beam (1-7), and a cross beam (1-12) is arranged below the rear end of the frame longitudinal beam (1-7); at both ends of the cross beam (1-12), a ground gripping arm (32) with a free end pointing forward and downward is hinged; the free end of the ground gripping arm (32) is hinged to the ground gripping wheel (35) via a fourth wheel axle (66); the left and right ground gripping arms (32) hinged to the two ends of the cross beam (1-12) are located on the outside of the soles of both feet during pedaling.

53. A walking vehicle according to any one of claims 1-25, wherein: A seat lower tube (1-4) is provided at the middle and rear end of the frame (1); a seat upper tube (28) is provided at the upper end of the seat lower tube (1-4); a seat (29) is provided at the upper end of the seat upper tube (28); a first direction control device is provided at the upper end of the seat upper tube (28); the first direction control device comprises: a locking ring (44) fixedly connected to the upper end of the seat upper tube (28), a lower transverse shaft (45) fixedly connected to the lower end of the locking ring (44); 5), a pair of direction arms (48) hinged at both ends of the lower transverse axis (45), an upper transverse tube (46) fixedly connected to the upper end of the locking ring (44), a positioning member (49) hinged to the upper transverse tube (46) through a small transverse axis (47), a first tension spring (50) connected between the positioning member (49) and the upper tube (28) of the vehicle seat, and two left and right steel wires (51) connected between the direction wheel bracket (2) and the pair of direction arms (48).

54. The walking vehicle of claim 53, wherein: The front end of the steering arm (48) is provided with a wire locking and adjusting mechanism (52); a pair of second fixed pulleys (53) are provided on both sides of the rear end of the vehicle frame (1); the left side steel wire (51) passes through the second fixed pulley (53) on the left side and is connected between the front end of the steering arm (48) on the left side and the left shoulder of the steering wheel bracket (2); the right side steel wire (51) passes through the second fixed pulley (53) on the right side and is connected between the front end of the steering arm (48) on the right side and the right shoulder of the steering wheel bracket (2); the steering arm A first waist guard (54) is provided at the upper end of the riding bicycle (48), and the first waist guard (54) corresponds to the waist of the rider; when the first waist guard (54) on the left side is pressed backwards by the waist, the rear end of the left steering arm (48) swings downwards, the front end of the left steering arm (48) swings upwards, and the left shoulder of the steering wheel bracket (2) is pulled backwards through the connected steel wire (51), driving the steering wheel (3) to turn left; conversely, when the first waist guard (54) on the right side is pressed backwards by the waist, the steering wheel (3) turns right.

55. The walking vehicle of claim 53, wherein: The positioning member (49) comprises a small swing arm (49-1) hingedly connected to the upper transverse tube (46) via a small transverse axis (47), and a transverse pressure rod (49-2) fixedly connected to the free end of the small swing arm (49-1); the transverse pressure rod (49-2) is pressed above the rear ends of a pair of direction arms (48); the first tension spring (50) tends to make the transverse pressure rod (49-2) press the rear ends of the left and right direction arms (48); when the transverse pressure rod (49-2) simultaneously presses the rear ends of the left and right direction arms (48), the spring force of the first tension spring (50) simultaneously acts on the left and right shoulders of the direction wheel bracket (2) through the left and right steel wires (51), and at this time the direction wheel (3) faces straight ahead.

56. The walking vehicle of any one of claims 1-25, wherein: A seat lower tube (1-4) is arranged at the middle and rear end of the frame (1); a seat upper tube (28) is arranged at the upper end of the seat lower tube (1-4); a seat (29) is arranged at the upper end of the seat upper tube (28); a second direction control device is arranged at the upper end of the seat upper tube (28); the second direction control device comprises: a longitudinal rod (55) fixedly connected to the upper end of the seat upper tube (28), a direction control arm (56) hinged on the longitudinal rod (55), a third fixed pulley (57) arranged at the left side of the rear end of the frame (1), a steel wire (51) connected between the direction control arm (56) and the left shoulder of the steering wheel bracket (2) through the third fixed pulley (57), a second tension spring (58) connected between the direction control arm (56) and the seat (29), and a third tension spring (59) connected between the right shoulder of the steering wheel bracket (2) and the frame (1).

57. The walking vehicle of claim 56, wherein: The direction control arm (56) comprises a hinged tube (56-1) sleeved on the longitudinal rod (55), a right forearm (56-2) fixedly connected to the right side of the hinged tube (56-1), and a control arm (56-3) fixedly connected to the upper end of the hinged tube (56-1); the second tension spring (58) is connected between the right end of the right forearm (56-2) and the rear end of the seat (29).

58. The walking vehicle of claim 57, wherein: The right end of the right forearm (56-2) is provided with a wire locking and adjusting mechanism (52); the steel wire (51) is connected between the right end of the right forearm (56-2) and the left shoulder of the steering wheel bracket (2) through the third fixed pulley (57); the tension applied by the second tension spring (58) to the left shoulder of the steering wheel bracket (2) through the direction control arm (56) and the steel wire (51) corresponds to the tension applied by the third tension spring (59) to the right shoulder of the steering wheel bracket (2), and the combined force generated by the two tends to make the steering wheel bracket (2) face forward. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel. The steering wheel (3) is a bicycle assisted steering wheel.

59. The walking vehicle according to any one of claims 11 to 15, wherein: The driving wheel (9) and the driving wheel axle (8) are arranged at the front end of the frame (1), and the frame head tube (1-1) is arranged at the rear end of the frame (1); a seat lower tube (1-4) is arranged at the middle and rear end of the frame (1); a seat upper tube (28) is arranged at the upper end of the seat lower tube (1-4), and a seat (29) is arranged at the upper end of the seat upper tube (28); a third direction control device is arranged at the middle and rear end of the frame (1), and the third direction control device comprises: a direction lower tube (1-5) arranged behind the seat lower tube (1-4), a direction upper tube (41) hinged in the direction lower tube (1-5), and a direction rod (43) fixedly connected to the top of the direction wheel bracket (2). , and a direction control rod (42) fixedly connected to the lower end of the tube (41) in the direction; wherein the end of the direction rod (43) is bent upward to form a vertical cylinder (43-1); the end of the direction control rod (42) is provided with a long strip bayonet (42-1), the opening width of the long strip bayonet (42-1) is adapted to the diameter of the vertical cylinder (43-1), and the vertical cylinder (43-1) extends into the long strip bayonet (42-1); a cross bar (41-1) is provided at the top of the tube (41) in the direction, and a third waist guard (41-2) is provided at both ends of the cross bar (41-1), and the third waist guard (41-2) is located at the upper rear of the seat (29) corresponding to the waist of the rider.

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