Spring suspension built-in miniature elevator driven by manpower treading

Abstract

The invention discloses a spring suspension built-in miniature elevator driven by manpower treading, which comprises a chassis, a rear beam, a stand column, an end cover, a middle joint, a middle shaft, a crank pedal, a large chain wheel I, a gearbox, an operating lever, a small chain wheel I, a large chain wheel II, a chain I, a worm gear speed reducer, a driving chain wheel, a small chain wheel II and a chain II, the stand column and the rear beam are symmetrically arranged above the two ends of the base plate, the lower end of the stand column penetrates through the base plate, the end cover is arranged below the base plate, the middle connector is arranged on the outer side of the stand column in a sleeving mode and arranged above the base plate, and the middle shaft is arranged on one side of the middle connector. The invention belongs to the technical field of elevators, and particularly provides an elevator which is economical, practical, safe, reliable, low in installation and maintenance cost and high in safety and reliability on the premise that basic structures and original states of original existing buildings and corridors are not changed and damaged. The spring suspension built-in miniature elevator driven by manpower treading solves the problems of convenience, labor saving, heavy object carrying and the like in daily travel.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and specifically refers to a spring-suspended built-in small and micro elevator driven by human pedaling. Background Art

[0002] The project of installing elevators in old houses is one of the important projects of the Ministry of Housing and Urban-Rural Development in urban renewal planning in recent years. It is also a livelihood project that benefits the people. Many old multi-story residential buildings have corridors that mostly use a turning short staircase structure with a rest platform in the middle, that is, a combined staircase consisting of two groups of 8 steps. If an external vertical lift is to be installed, due to the limitations of the building structure, it is generally only possible to use a half-floor entry structure, and set the entrance and exit of the elevator door on the rest platform in the middle. Since it is impossible to enter the house on the same floor, the last 8 steps will bring additional burden and physical exertion to the elderly. For the elderly and physically disabled people who have difficulty in moving and need to ride wheelchairs, it is an insurmountable obstacle, and it is impossible to achieve truly barrier-free access throughout the entire journey.

[0003] Installing an external elevator shaft outside the building and entering the entrance platform through a corridor bridge on each floor is a relatively ideal and adequate solution. However, the construction of the external elevator shaft requires digging a very deep pit, and a large elevator entrance and exit needs to be excavated on the gable (load-bearing wall) of each floor of the building. This will cause damage to the overall structural strength and potential safety hazards to old houses that have been in disrepair for many years. It will also have a series of negative impacts in terms of lighting, ventilation, noise, and the need to occupy the green belt outside the red line. In addition, it requires high engineering costs, which makes it unbearable for the majority of owners and difficult to reach a consensus on adding elevators. Therefore, progress is slow, the actual rate of adding elevators is very low, and it is difficult to promote and popularize it on a large scale. Summary of the invention

[0004] In order to solve the above-mentioned existing problems, the present invention provides a spring-suspended built-in micro lift driven by human pedaling, which is economical, practical, safe and reliable, has low installation and maintenance costs, and can solve the problems of convenient and labor-saving daily travel and carrying heavy objects, without changing or destroying the basic structure and original state of the existing buildings and corridors.

[0005] The technical solution adopted by the present invention is as follows: the present invention adopts a spring-suspended built-in small and micro-elevator driven by human pedaling, including a chassis, a rear beam, a column, an end cover, a middle joint, a middle shaft, a crank foot, a large sprocket one, a gearbox, a joystick, a small sprocket one, a large sprocket two, a chain one, a worm gear reducer, a driving sprocket, a small sprocket two and a chain two, the column and the rear beam are symmetrically arranged above the two ends of the chassis, the lower end of the column passes through the chassis, the end cover is arranged below the chassis, the middle joint is sleeved on the outside of the column and is arranged above the chassis, the middle shaft is arranged on one side of the middle joint, the large sprocket one is fixed to one end of the middle shaft, the crank foot is arranged on one side of the middle shaft, and the crank foot and one end of the middle shaft are connected. The large sprocket one is fixedly connected, the gearbox is fixedly arranged above the chassis and on one side of the rear beam, the joystick is arranged on one side of the gearbox, the joystick is connected to the gearbox, the small sprocket one is rotatably arranged on the outside of the gearbox and is connected to the output end of the gearbox, the large sprocket two is rotatably arranged on one side of the small sprocket one and is connected to the input end of the gearbox, the chain one is wound around the outside of the large sprocket one and the small sprocket one, the chain one is meshed with the large sprocket one and the small sprocket one, the worm gear reducer is fixedly arranged below the chassis, the small sprocket two is rotatably arranged at the output end of the worm gear reducer, the chain two is wound around the outside of the large sprocket two and the small sprocket two, the chain two is meshed with the large sprocket two and the small sprocket two.

[0006] Furthermore, a base is provided on one side of the rear beam, the base is provided above the gearbox, the saddle is slidably provided above the base, an adjusting screw is fixed under the saddle, a screw sleeve is fixed at one end of the base away from the rear beam, the adjusting screw passes through the screw sleeve, and a tightening hand wheel is provided on one side of the screw sleeve.

[0007] Furthermore, a shaft sleeve is provided on the outer side of the column, and a plurality of the shaft sleeves are provided. The plurality of shaft sleeves are respectively provided on one side of the end cover and the middle joint sleeve, and the mounting hand wheel is provided on one side of the shaft sleeve.

[0008] Furthermore, the worm gear reducer adopts a dual-axis output worm gear reducer, a driving sprocket is provided at the other output end of the worm gear reducer, a driving chain is provided on the outer sleeve of the driving sprocket, a sliding sleeve is provided inside one end of the column, the sliding sleeve is provided on one side of the end cover, the driving chain passes through the end cover and the sliding sleeve in sequence and passes through the column, two planetary reducers are provided on one side of the worm gear reducer, and the output ends of the two planetary reducers are respectively connected to the two input ends of the worm gear reducer.

[0009] Furthermore, an inner door frame is provided above the chassis, side beams are symmetrically fixed on both sides of the inner door frame, energy storage safety tension springs are provided in the side beams, an outer door frame is provided on the side of the inner door frame away from the chassis, the outer door frame is fixed at the corners of each floor, the inner door frame includes a cross beam, side beams and a middle beam, two side beams are provided, the two side beams are symmetrically arranged below the two ends of the cross beam, and the middle beam is fixed between the side beams and below the cross beam.

[0010] Furthermore, an anti-slip combined sprocket is provided on one side of the main shaft, and the anti-slip combined sprocket includes a base plate, a bearing seat, a driving sprocket, a passive sprocket, a sleeve and a pulley. The bearing seat is fixed on one side of the base plate, the driving sprocket and the passive sprocket are rotatably arranged on one side of the base plate, the sleeve is arranged between the passive sprocket and the bearing seat, and the pulley is rotatably arranged between the two passive sprockets.

[0011] Further, the mounting plate includes a left frame, a right frame, a front beam, an installation middle beam, an installation rear beam, a pillar and an installation pulley, the left frame, the right frame and the front beam form an isosceles right triangle, the installation middle beam is arranged between the left frame and the right frame and on one side of the front beam, the installation rear beam is arranged between the left frame and the right frame and on the side of the installation middle beam away from the front beam, the pillar is fixed on one side of the installation middle beam, the installation pulley is installed on one side of the installation rear beam, the pillar includes a nut and a pillar body, and the nut is arranged on one side of the pillar body.

[0012] Furthermore, a chain tensioner adjuster is provided on the outer side of the active chain, and the chain tensioner adjuster comprises a fork frame and a cushion sleeve, the fork frame is sleeved on the outer side of the active chain, and the cushion sleeve is provided on the inner side of the fork frame.

[0013] Preferably, the sliding sleeve adopts a detachable structure of two halves, and the sliding sleeve is made of engineering plastics with good wear resistance.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows:

[0015] 1. The major breakthrough of the built-in vertical lift elevator is that it makes full use of the dead corners at the corners on both sides of the entrance platform or the middle rest platform in the corridor and the existing gables and inner walls of the original building. It only needs to open holes in the floor slabs and add door frames and sliding doors to naturally form a so-called hoistway with a triangular cross-section that runs through the top and bottom. It causes relatively little damage to the overall building structure and strength of the building, and has little impact on traditional conventional stairs.

[0016] 2. It has the safety protection function of air spring suspension, which can not only achieve the purpose of energy saving and load balance, but also has the safety protection function.

[0017] 3. The anti-slip combined sprocket structure is adopted to prevent the sprocket chain transmission pair from failing due to slipping and tripping of the sprocket tooth tip, and to prevent serious accidents such as the car sliding down from a high altitude and falling to the bottom.

[0018] 4. The project cost is low and cost-effective. It adopts human-driven mode and is green, energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a spring-suspended built-in miniature lift that is driven by human pedaling and proposed in this scheme;

[0020] Figure 2 This is a schematic diagram of the plan structure of a spring-suspended built-in miniature lift that is driven by human pedaling and proposed in this scheme;

[0021] Figure 3 Schematic diagram of the central shaft transmission structure proposed for this scheme;

[0022] Figure 4 This is a schematic diagram of the car skeleton structure proposed for this solution;

[0023] Figure 5 This is a schematic diagram of the chain structure hidden in the column proposed in this scheme;

[0024] Figure 6 Schematic diagram of the exterior door frame structure proposed for this scheme;

[0025] Figure 7 Schematic diagram of the anti-drop combined sprocket structure proposed in this scheme;

[0026] Figure 8 Schematic diagram of the passive sprocket structure proposed for this scheme;

[0027] Fig. 9 Schematic diagram of the installation disk structure proposed for this solution;

[0028] Fig.10 Schematic diagram of the pillar shape structure proposed for this scheme;

[0029] Fig.11 This is a schematic diagram of the chain tensioner structure proposed in this scheme.

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: 1, chassis, 2, rear beam, 3, column, 4, bushing, 5, end cover, 6, middle joint, 7, middle shaft, 8, crank pedal, 9, large sprocket 1, 10, gearbox, 11, joystick, 12, small sprocket 1, 13, large sprocket 2, 14, chain 1, 15, worm gear reducer, 16, driving sprocket, 17, small sprocket 2, 18, chain 2, 19, base, 20, screw, 21, saddle, 22, tightening hand wheel, 23, installation hand wheel, 24, driving chain, 25, screw sleeve, 31, side beam, 32, energy storage safety tension spring, 33, Inner door frame, 34, planetary reducer, 41, sliding sleeve, 50, outer door frame, 51, cross beam, 52, side beam, 53, middle beam, 60, anti-drop combination sprocket, 61, bottom plate, 62, bearing seat, 63, driving sprocket, 64, passive sprocket, 65, sleeve, 66, pulley, 70, installation plate, 71, left frame, 72, right frame, 73, front beam, 74, install middle beam, 75, install rear beam, 76, pillar, 77, install pulley, 78, nut, 79, pillar body, 80, chain tensioner adjuster, 81, fork frame, 82, sleeve. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2As shown, the spring-suspended built-in small and micro-elevator driven by human pedaling proposed in this scheme includes a chassis 1, a rear beam 2, a column 3, an end cover 5, a middle joint 6, a middle shaft 7, a crank pedal 8, a large sprocket 9, a gearbox 10, a joystick 11, a small sprocket 12, a large sprocket 2 13, a chain 14, a worm gear reducer 15, a driving sprocket 16, a small sprocket 2 17 and a chain 2 18. The column 3 and the rear beam 2 are symmetrically arranged above the two ends of the chassis 1, the lower end of the column 3 passes through the chassis 1, the end cover 5 is arranged below the chassis 1, the middle joint 6 is sleeved on the outside of the column 3 and is arranged above the chassis 1, the middle shaft 7 is arranged on one side of the middle joint 6, the large sprocket 9 is fixed to one end of the middle shaft 7, the crank pedal 8 is arranged on one side of the middle shaft 7, and the crank pedal 8 is fixed to the large sprocket 9 at one end of the middle shaft 7. The gearbox 10 is fixedly arranged above the chassis 1 and on one side of the rear beam 2, the joystick 11 is arranged on one side of the gearbox 10, and the joystick 11 is connected to the gearbox 10. The small sprocket 12 is rotatably arranged on the outside of the gearbox 10 and is connected to the output end of the gearbox 10. The large sprocket 2 13 is rotatably arranged on one side of the small sprocket 12 and is connected to the input end of the gearbox 10. The chain 14 is wound around the outside of the large sprocket 1 9 and the small sprocket 12, and the chain 14 is meshed with the large sprocket 1 9 and the small sprocket 12. The worm gear reducer 15 is fixedly arranged below the chassis 1, and the small sprocket 2 17 is rotatably arranged at the output end of the worm gear reducer 15. The chain 2 18 is wound around the outside of the large sprocket 2 13 and the small sprocket 2 17, and the chain 2 18 is meshed with the large sprocket 2 13 and the small sprocket 2 17.

[0033] like Figure 1 and Figure 2 As shown, a base 19 is provided on one side of the rear beam 2, and the base 19 is provided above the gearbox 10. The saddle 21 is slidably provided above the base 19, and an adjusting screw 20 is fixedly provided below the saddle 21. A screw sleeve 25 is fixedly provided at one end of the base 19 away from the rear beam 2, and the adjusting screw 20 passes through the screw sleeve 25. A tightening handwheel 22 is provided on one side of the screw sleeve 25. A shaft sleeve 4 is provided on the outer side of the column 3, and a plurality of shaft sleeves 4 are provided. The plurality of shaft sleeves 4 are respectively provided on one side of the end cover 5 and the middle joint 6, and the mounting handwheel 23 is provided on one side of the shaft sleeve 4.

[0034] like Figure 1 to Figure 3 As shown, the worm gear reducer 15 adopts a dual-axis output worm gear reducer 15, and the other output end of the worm gear reducer 15 is provided with a driving sprocket 16, and the outer side of the driving sprocket 16 is provided with a driving chain 24, and a sliding sleeve 41 is provided in one end of the column 3, and the sliding sleeve 41 is provided on one side of the end cover 5. The driving chain 24 passes through the end cover 5 and the sliding sleeve 41 in sequence and passes through the column 3, and two planetary reducers 34 are provided on one side of the worm gear reducer 15, and the output ends of the two planetary reducers 34 are respectively connected to the two input ends of the worm gear reducer 15.

[0035] like Figure 1 to Figure 7 As shown, an inner door frame 33 is provided above the chassis 1, and side beams 31 are symmetrically fixed on both sides of the inner door frame 33. Energy storage safety tension springs 32 are provided in the side beams 31. An outer door frame 50 is provided on the side of the inner door frame 33 away from the chassis 1. The outer door frame 50 is fixed at the corners of each floor. The inner door frame 33 includes a cross beam 51, a side beam 31 and a middle beam 53. Two side beams 31 are provided, and the two side beams 31 are symmetrically arranged below the two ends of the cross beam 51. The middle beam 53 is fixed between the side beams 31 and arranged below the cross beam 51.

[0036] like Figures 1 to 8 As shown, an anti-slip combined sprocket 60 is provided on one side of the main shaft, and the anti-slip combined sprocket 60 includes a base plate 61, a bearing seat 62, a driving sprocket 16, a passive sprocket 64, a cushion sleeve 65 and a pulley 66. The bearing seat 62 is fixed on one side of the base plate 61, the driving sprocket 16 and the passive sprocket 64 are rotatably arranged on one side of the base plate 61, the cushion sleeve 65 is arranged between the passive sprocket 64 and the bearing seat 62, and the pulley 66 is rotatably arranged between the two passive sprockets 64.

[0037] like Figures 1 to 10 As shown, the mounting plate 70 includes a left frame 71, a right frame 72, a front beam 73, an installation middle beam 74, an installation rear beam 75, a pillar 76 and an installation pulley 77. The left frame 71, the right frame 72 and the front beam 73 form an isosceles right triangle. The installation middle beam 74 is arranged between the left frame 71 and the right frame 72 and on one side of the front beam 73. The installation rear beam 75 is arranged between the left frame 71 and the right frame 72 and on the side of the installation middle beam 74 away from the front beam 73. The pillar 76 is fixedly arranged on one side of the installation middle beam 74. The installation pulley 77 is installed on one side of the installation rear beam 75. The pillar 76 includes a nut 78 and a pillar 76 body. The nut 78 is arranged on one side of the pillar 76 body.

[0038] like Figures 1 to 11 As shown, a chain tensioner adjuster 80 is provided on the outer side of the driving chain 24 , and the chain tensioner adjuster 80 includes a fork frame 81 and a cushion sleeve 65 . The fork frame 81 is sleeved on the outer side of the driving chain 24 , and the cushion sleeve 65 is provided on the inner side of the fork frame 81 .

[0039] The sliding sleeve 41 is a detachable structure composed of two halves, and the sliding sleeve 41 is made of engineering plastics with good wear resistance.

[0040] In actual use, the middle joint 6 is used to install components such as the middle shaft 7 and the crank pedal 8. The middle joint 6 is sleeved on the column 3 and can adjust the chain by adjusting the height position. It is locked with two flat nuts and the installation handwheel 23. The center distance of the crank is 165-170 mm. The crank and the large sprocket are integrated. Two deep groove ball bearings are embedded at both ends of the middle joint 6 to support the middle shaft 7, which is superior to the middle shaft 7 structure of traditional bicycles in terms of flexibility and service life. The gearbox 10 is located below the saddle 21 and close to the rear beam 2 without occupying space. There is an appropriate adjustment amount before and after for chain adjustment. The operating lever 11 is used for shifting gears. The worm gear reducer is installed on the reverse side of the chassis 1 (the bottom outside the car). Therefore, a long groove or long hole is opened on the chassis 1. The chain passes through the long groove to connect the large sprocket and the small sprocket. A driving sprocket 16 with an anti-detachment function is installed on the output shaft of the worm reducer 15. The driving sprocket 16 and the drive chain form a strong and reliable sprocket-chain transmission pair. The T-shaped base 19 and the rear beam 2 are welded by electric welding, which is relatively reliable. Due to the large force, a screw 20-nut type lifting structure is adopted, which can make the saddle 21 located at an appropriate height position and then locked with the fastening handwheel 22.

[0041] When the load is light, you can pedal in a sitting position and switch the gear of the gearbox 10 to the fast gear or the medium gear. When the load is heavy, you can pedal in a standing position, hold the column 3 tightly with both hands, and switch the gear to the slow gear to obtain a driving torque more than three times. When you need to adjust the pedaling direction, you can switch to the reverse gear. When using the electric drive mode, you should switch to the neutral gear.

[0042] Young people with good physical fitness sit on the saddle 21 located in the middle of the car and are responsible for pedaling and driving. One elderly person or child can stand on each side. An inner door is provided on the front of the car. The inner door uses a tempered glass sliding door, but it is only provided on both sides. The middle part is open to make room for the movement track of the pedal. Due to the obstruction of the column 3, it has little impact on safety. When the car reaches the floor platform, the two sliding doors can be translated to the middle position to overlap, and people can enter and exit the car on both sides. At the same time, the rotation of the pedal is restricted and locked to ensure safety.

[0043] In the gaps on both sides of the car, two energy storage safety springs 32 are provided. Since they are hidden behind the door frames of each floor, they are very safe. A counterweight is set in the triangular space at the rear of the car. Its self-weight should be close to that of the car, about 100-120 kg. It forms a pulley 66 balance system, which can realize the automatic conversion between potential energy and kinetic energy to achieve the function of saving effort and balancing the load.

[0044] A coaxial planetary reducer 34 is connected in series at one end of the input shaft of the worm gear reducer 15, and a single-stage reduction ratio of 1:10 is adopted. The power of human drive is derived from the output shaft of the gearbox 10, and is transmitted to the output end of the planetary reducer 34 through the large sprocket and the small sprocket. It is used for speed increase. Due to the large force, a fixed bracket should be provided at the bottom of the planetary reducer 34. A vertical angle planetary reducer 34 is connected in series at the other end of the input shaft of the worm gear reducer 15, and a single-stage reduction ratio of 1:10 is also adopted. The power of the lithium battery electric wrench is input from the output shaft of the planetary reducer 34.

[0045] The middle shaft 7 adopts a cross-shaped welding structure. The shaft sleeve 4 is hollowly sleeved on the column 3. Its height position can be adjusted mainly for the adjustable chain. The column 3 is fully utilized to omit the frame and the faucet handrail and other components. In addition to fixing the middle shaft 7, the column 3 also has the function of the handrail. It is not only simple in structure but also strong and stable. The support structure of the middle shaft 7 adopts a deep groove rolling bearing with a low rolling friction coefficient. The two ends of the middle shaft 7 are milled into a square, and the connection with the crank is reliable, and the installation and disassembly are also convenient.

[0046] The chassis 1 and the top cover are both triangular in shape, with a total of six sides that are bent and welded at the joints. It is best to use integral stamping for higher strength. The side beams 31 can directly use edge angle steels, the rear beam 2 can use channel steels, and the brackets can use angle steels. Although they are heavy, they have high strength and are easy to process.

[0047] The column 3 is located in the center of the car. The center joint 6 and the flat nut should be put on in advance during assembly. A platform is milled on the threaded section of the column 3, which can facilitate the locking of the handwheel 23 and limit the rotation of the column 3 for positioning. Therefore, the center hole on the chassis 1 also has a platform with a keyway function. Flat nuts are used to tighten the two ends of the column 3 without looseness, and then the end cover 5 is screwed on. The column 3 can be used as a handrail by three people at the same time.

[0048] The holes on the surface of the bracket are used to fix the steel wire rope used to connect the counterweight. The force is relatively large. The left and right guard plates are universal. They are embedded in the top cover and the chassis 1 and then fixed to the side beams 31 and the rear beam 2 on both sides with screws. The guard plates have a certain strengthening effect on the overall strength of the car and also have a safety protection function.

[0049] After the column 3 passes through the top cover and chassis 1 of the car, the two ends are fixed with flat nuts and flat washers. The chain can enter the column 3 and pass through it after passing through the end cover 5 and the sliding sleeve 41 in turn. In order to facilitate maintenance, the sliding sleeve 41 adopts a detachable structure composed of two halves. The sliding sleeve 41 is a vulnerable and wearable part that needs to be replaced regularly. Since the center of gravity of the car itself does not coincide with the center of the column 3, and the load distribution in the car is uncertain, when the center of gravity deviates from the center of the column 3, the car will be in an unbalanced state. The friction generated by the lateral positive pressure during dynamic movement will gradually wear out the inner hole of the sliding sleeve 41. The sliding sleeve 41 is made of engineering plastics with good wear resistance and should work under a good lubrication state to ensure a long service life. Silicone grease with high viscosity can usually be injected into the sliding sleeve 41, and the chain is also lubricated when used.

[0050] The door frame assembly should be installed at the designated position of each floor corner before the floor is opened, and keep close contact with the top floor, so as to provide good support for the floor and prevent the floor from sinking or even collapsing. The two sides of the door frame are closely connected to the wall at a 45-degree angle. After the floor on the top of the door frame is opened, the edge of the bevel should be flush with the crossbeam 51 of the door frame, and the section of the floor opening should be leveled with cement mortar. After the door frame is installed in place and confirmed to be correct, it is fixed to the floor with expansion anchor bolts at the bottom and top, naturally forming one side of the triangular shaft, which is also the entrance and exit of the car.

[0051] The lower part of the door frame is used to install the outward sliding door, and the upper part of the door frame is used to install the electronic display assembly. The electronic display can automatically display the floor position of the elevator through signal lights. The bumper on the car triggers the micro switch installed in the door frame. The electronic display system is installed on the upper part of the door frame on each floor. It has no direct electrical connection with the car, only a mechanical constant relationship.

[0052] The center of the driving sprocket 16 and the two driven sprockets 64 in the anti-dropout combined sprocket 60 forms a triangular stable area, and the chain passes through the middle channel. The pulley 66 opposite the driving sprocket 16 also plays a limiting role. It can be seen that the chain will never be disengaged or slipped in the triangular stable area.

[0053] The mounting plate 70 is in the shape of an isosceles right triangle, which is slightly smaller than the opening size of the floor slab. It is installed at the top of the shaft. Its main function is to hang chains, tension springs, pulleys 66 and other components. Since it is directly related to the safety of the elevator, personal injury will occur if it falls off. Therefore, the installation should be absolutely reliable, and the maximum load-bearing capacity should not be less than 1000kg. Two expansion anchor bolts can be installed on the left and right frames 72 on the gable, and then two through bolts can be installed on the top plate on the middle beam 53. The top plate should be pierced and then fixed with long bolts.

[0054] The support column 76 is welded at the center of the middle beam 53, which is also the positioning reference point and bearing point of the car. The accuracy of the center position and the quality of welding should be fully guaranteed. There are mounting holes on both sides of the legs of the front beam 73, and a hexagonal bolt kit can be used to hang the tension spring. The pulley 66 is installed on the rear beam 2 and is used to suspend the counterweight. It is connected to the car through a wire rope to form a pulley 66 balance system.

[0055] The support 76 is connected by electric welding at the peripheral joints. The welding points should not be less than six points. It should be able to withstand a tensile force of more than 1000kg without breaking. Although the structure is simple, it is a key component of the lift.

[0056] The bottom plane of the support 76 is accurately welded to the center of the beam 53 of the mounting plate 70, and the other end is connected to the chain tensioner. The maximum adjustment distance of the adjustment bolt is ≤100mm.

[0057] After inserting the fork frame 81, screw on the hexagonal nut and keep a moderate gap, then weld it with the adjusting bolt, which can be used as the entry point of the wrench during adjustment. The hexagonal nut is a locking nut, which can be locked to prevent loosening after the adjustment is completed. There are gaskets 65 on both sides of the chain. When it is necessary to fine-tune the verticality of the chain to the ground, the flat washer size can also be used to form an asymmetric configuration. When adjusting the tightness of the chain, the fork frame 81 should not be rotated to avoid changing the original state of the chain when it is stationary. The adjustment work is carried out at the top position and should be adjusted by professional maintenance personnel.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring-suspended internal miniature lift driven by human pedaling, characterized in that: The present invention adopts a spring-suspended built-in small and micro-elevator driven by human pedaling, comprising a chassis, a rear beam, a column, an end cover, a middle joint, a middle shaft, a crank foot, a large sprocket wheel one, a gearbox, a joystick, a small sprocket wheel one, a large sprocket wheel two, a chain one, a worm gear reducer, a driving sprocket wheel, a small sprocket wheel two and a chain two, the column and the rear beam are symmetrically arranged above the two ends of the chassis, the lower end of the column passes through the chassis, the end cover is arranged below the chassis, the middle joint is sleeved on the outside of the column and arranged above the chassis, the middle shaft is arranged at one side of the middle joint, the large sprocket wheel one is fixedly arranged at one end of the middle shaft, the crank foot is arranged at one side of the middle shaft, the crank foot is fixedly arranged with the large sprocket wheel one at one end of the middle shaft The gearbox is fixedly connected above the chassis and on one side of the rear beam, the joystick is arranged on one side of the gearbox, the joystick is connected to the gearbox, the small sprocket one is rotatably arranged on the outside of the gearbox and is connected to the output end of the gearbox, the large sprocket two is rotatably arranged on one side of the small sprocket one and is connected to the input end of the gearbox, the chain one is wound around the outside of the large sprocket one and the small sprocket one, the chain one is meshed with the large sprocket one and the small sprocket one, the worm gear reducer is fixedly arranged below the chassis, the small sprocket two is rotatably arranged at the output end of the worm gear reducer, the chain two is wound around the outside of the large sprocket two and the small sprocket two, the chain two is meshed with the large sprocket two and the small sprocket two.

2. The spring-suspended internal miniature lift driven by human pedaling according to claim 1, characterized in that: A base is provided on one side of the rear beam, and the base is provided above the gearbox. The saddle is slidably provided above the base, an adjusting screw is fixedly provided under the saddle, a screw sleeve is fixedly provided at one end of the base away from the rear beam, the adjusting screw passes through the screw sleeve, and a tightening hand wheel is provided on one side of the screw sleeve.

3. The spring-suspended internal miniature lift driven by human pedaling according to claim 2, characterized in that: The outer side of the column is provided with a shaft sleeve, and the shaft sleeve is provided in plurality. The plurality of shaft sleeves are respectively arranged on one side of the end cover and the middle joint sleeve, and the mounting hand wheel is arranged on one side of the shaft sleeve.

4. The spring-suspended internal miniature lift driven by human pedaling according to claim 3 is characterized in that: The worm gear reducer adopts a dual-axis output worm gear reducer, the other output end of the worm gear reducer is provided with a driving sprocket, the outer sleeve of the driving sprocket is provided with a driving chain, a sliding sleeve is provided in one end of the column, the sliding sleeve is provided on one side of the end cover, the driving chain passes through the end cover and the sliding sleeve in sequence and passes through the column, two planetary reducers are provided on one side of the worm gear reducer, and the output ends of the two planetary reducers are respectively connected to the two input ends of the worm gear reducer.

5. The spring-suspended internal miniature lift driven by human pedaling according to claim 4, characterized in that: An inner door frame is provided above the chassis, side beams are symmetrically fixed on both sides of the inner door frame, energy storage safety tension springs are provided in the side beams, an outer door frame is provided on the side of the inner door frame away from the chassis, the outer door frame is fixed at the corners of each floor, the inner door frame includes a cross beam, side beams and a middle beam, two side beams are provided, the two side beams are symmetrically arranged below the two ends of the cross beam, and the middle beam is fixed between the side beams and below the cross beam.

6. The spring-suspended internal miniature lift driven by human pedaling according to claim 5, characterized in that: A combination sprocket with an anti-slipping function is provided on one side of the main shaft, and the combination sprocket with an anti-slipping function includes a base plate, a bearing seat, a driving sprocket, a passive sprocket, a cushion sleeve and a pulley. The bearing seat is fixed on one side of the base plate, the driving sprocket and the passive sprocket are rotatably provided on one side of the base plate, the cushion sleeve is provided between the passive sprocket and the bearing seat, and the pulley is rotatably provided between the two passive sprockets.

7. The spring-suspended internal miniature lift driven by human pedaling according to claim 6, characterized in that: The mounting plate comprises a left frame, a right frame, a front beam, an installation middle beam, an installation rear beam, a pillar and an installation pulley, wherein the left frame, the right frame and the front beam form an isosceles right triangle, the installation middle beam is arranged between the left frame and the right frame and on one side of the front beam, the installation rear beam is arranged between the left frame and the right frame and on the side of the installation middle beam away from the front beam, the pillar is fixed on one side of the installation middle beam, the installation pulley is installed on one side of the installation rear beam, and the pillar comprises a nut and a pillar body, and the nut is arranged on one side of the pillar body.

8. The spring-suspended internal miniature lift driven by human pedaling according to claim 7, characterized in that: A chain tensioner adjuster is arranged on the outer side of the active chain. The chain tensioner adjuster comprises a fork frame and a cushion sleeve. The fork frame is sleeved on the outer side of the active chain, and the cushion sleeve is arranged on the inner side of the fork frame.

9. The spring-suspended internal miniature lift driven by human pedaling according to claim 4, characterized in that: The sliding sleeve adopts a detachable structure of two halves, and the sliding sleeve is made of engineering plastics with good wear resistance.

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