Trailer capable of achieving brake locking in self-resetting process

Abstract

The utility model relates to a trailer, in particular to a trailer capable of achieving brake locking in the self-resetting process, and solves the problems that an operator forgets to conduct brake operation after releasing trailer towing, the trailer is in a non-brake state and possibly freely slides, and safety accidents are likely to be caused. The self-resetting trailer comprises a mounting frame, a wheel shaft arranged at the bottom of the mounting frame, wheels arranged at the two ends of the wheel shaft, a self-resetting assembly and a linkage brake assembly, the self-resetting assembly comprises a mop rotating shaft arranged on the mounting frame and a trailer handle hinged to the mop rotating shaft, and a spring seat is arranged on one side of the mounting frame. A self-resetting top shaft is arranged on the trailer handle and located at the bottom of the mop rotating shaft, and the abutting plate of the spring seat abuts against the self-resetting top shaft so that self-resetting of the trailer handle can be achieved. The linkage brake assembly comprises push plates arranged on the two sides of the trailer handle and brake rods arranged on the mounting frame, and in the self-resetting process of the trailer handle, the push plates push the brake rods to make the brake rods make contact with the wheels to generate braking force.

Description

Technical Field

[0001] The utility model relates to a trailer, in particular to a trailer capable of achieving brake locking during a self-resetting process. Background Art

[0002] A trailer is a non-powered vehicle used to transport or tow items. It is usually composed of wheels, a frame, a trailer handlebar, a rotating mechanism, etc. It is widely used in various production and life scenarios, such as industrial logistics, agricultural machinery traction, and small equipment handling. In actual use, the trailer handlebar plays an important role. It is responsible for the traction, guidance, and parking brake functions of the entire trailer. Since the trailer handlebar integrates a large number of functions, the operation and use of the trailer handlebar is relatively cumbersome. Generally, the brake needs to be manually released before towing, and then towing. After releasing the trailer, the brake needs to be manually locked. During this process, the trailer handlebar is always in a free state, and its parking brake depends entirely on the operator. If the operator forgets to brake after releasing the trailer, the trailer will be in a brakeless state and may slide freely, which is easy to cause safety accidents. Utility Model Content

[0003] The utility model aims to solve the technical problem in the prior art that an operator forgets to perform a brake operation after releasing a trailer, causing the trailer to be in a brake-free state and possibly slide freely, which may easily cause a safety accident, and to provide a trailer that can achieve brake locking during a self-resetting process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A trailer capable of achieving brake locking during a self-resetting process, the special features of which are: comprising a handlebar assembly and wheels;

[0006] The handlebar assembly includes a mounting frame, a wheel axle, a self-reset assembly and a linkage brake assembly;

[0007] The wheel axle is arranged at the bottom of the mounting frame, and there are two wheels, which are respectively mounted at both ends of the wheel axle;

[0008] The self-resetting assembly comprises a mop shaft arranged on a mounting frame, and a trailer handle is hinged on the mop shaft; a spring seat is arranged on the side of the mounting frame facing the trailer handle, and the spring seat comprises a fixed seat and a movable seat, the fixed seat comprises a fixed plate connected to the side of the mounting frame and a guide cylinder arranged on the outer side of the fixed plate, the movable seat comprises a guide rod coaxially arranged in the guide cylinder and an abutment plate arranged on the outer end surface of the guide rod, and a self-resetting spring is coaxially sleeved on the outer side of the guide cylinder and the guide rod, one end of the self-resetting spring is connected to the fixed plate, and the other end is connected to the abutment plate, and a self-resetting top shaft is arranged on the trailer handle and at a position located at the bottom of the mop shaft, and the self-resetting top shaft abuts against the outer end surface of the abutment plate;

[0009] The linkage brake assembly includes two push plates respectively arranged on both sides of the trailer handle, a brake rod guide shaft arranged on a mounting frame, a brake rod and a brake rod return spring sleeved on the brake rod guide shaft, one end of the brake rod return spring abuts against the mounting frame, and the other end abuts against the brake rod, and the brake rod return spring is located on the side of the brake rod facing the wheel; the two ends of the brake rod are respectively arranged corresponding to the two wheels, and brake push rods are respectively arranged on the brake rod at the positions corresponding to the two push plates.

[0010] Furthermore, the mounting frame includes a mounting base and an I-shaped cover plate arranged on the upper surface of the mounting base, the I-shaped cover plate is fixed to the upper surface of the mounting base by bolts, and through holes are respectively arranged on the two side plates of the I-shaped cover plate, the brake rod guide shaft is arranged in the through hole, a limiting boss is arranged at the end of the brake rod guide shaft away from the push plate, the limiting boss abuts against the corresponding outer side surface of the side plate, a threaded section is arranged at the end of the brake rod guide shaft facing the push plate, and a fixing nut is screwed on the threaded section, and the fixing nut abuts against the corresponding outer side surface of the side plate; the brake rod is a square tube, and its lower surface abuts against the lining plate arranged on the upper surface of the mounting base, one end of the brake rod return spring abuts against the outer side wall of the brake rod, and the other end abuts against the inner wall of the side plate of the I-shaped cover plate.

[0011] Furthermore, a hook is provided on the upper surface of the top plate of the X-shaped cover plate, a non-return claw rotating shaft is provided on the trailer handle, a non-return claw is connected to the non-return claw rotating shaft, the non-return claw includes a claw body installed on the non-return claw rotating shaft and a pedal arranged at one end of the claw body, a reset torsion spring is sleeved on the non-return claw rotating shaft, one end of the reset torsion spring is connected to the claw body, and the other end is connected to the trailer handle, a groove is provided on the claw body, and when the brake is in a locked state, the hook can be hooked with the non-return claw through the groove.

[0012] Furthermore, the brake top rod is a threaded rod, a mounting hole is penetrated through the side wall of the brake rod, the brake top rod is located in the mounting hole, and adjusting nuts are respectively arranged on the brake top rod and on both sides of the brake rod.

[0013] Furthermore, a reinforcing rib plate is provided on the outer side surface of the push plate, and the reinforcing rib plate is respectively connected to the push plate and the side wall of the trailer handle, and the reinforcing rib plate improves the structural strength of the push plate.

[0014] Furthermore, an operating handle is provided at one end of the trailer handle away from the mop rotating shaft, and there are two operating handles which are respectively located on both sides of the trailer handle, so that the operator can operate conveniently.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model provides a trailer that can achieve brake locking during the self-resetting process, in which a self-resetting component is provided, wherein a fixed seat, a movable seat and a self-resetting spring cooperate to form a telescopic mechanism, and a self-resetting top shaft is provided at the bottom of the mop shaft, and the self-resetting top shaft abuts against the outer end surface of the movable seat abutment plate, so that when in the towing state, the self-resetting spring is compressed, and when the towing is released, the external force acting on the trailer handle disappears, and the elastic potential energy accumulated in the self-resetting spring is released, and the trailer handle is pushed to rotate around the mop shaft through the self-resetting top shaft to achieve self-resetting; linkage brake Because of the brake rod guide shaft and brake rod reset spring, the brake rod in the assembly is pushed away from the wheel by the brake reset spring when in the towing state, which will not affect the normal rotation of the wheel. During the self-reset process, the push plates set on both sides of the trailer handle push the brake top rod to move toward the wheel, and then push the brake rod to move toward the wheel, so that the brake rod contacts the wheel and generates braking force. At the same time, the brake rod reset spring on the brake rod guide shaft is compressed. When it is in the towing state again, the push plate is away from the brake top rod, and the brake rod reset spring will push the brake rod away from the wheel. After the trailer is unhooked, the trailer can be self-reset, and the brake is locked synchronously during the self-reset process, which solves the problem of forgetting to brake after unhooking the trailer, and the trailer will be in a brakeless state and may slide freely, which is easy to cause safety accidents.

[0017] (2) The utility model provides a trailer capable of achieving brake locking during the self-resetting process. A hook is provided on the upper surface of a "X"-shaped cover plate, and a non-return claw rotating shaft is provided on the trailer handle. A non-return claw is connected to the non-return claw rotating shaft, and a reset torsion spring is provided on the non-return claw rotating shaft. One end of the reset torsion spring is connected to the claw body, and the other end is connected to the trailer handle. A groove is provided on the claw body. When the brake is locked, the hook can be hooked with the non-return claw through the groove to lock the trailer in the brake locking state to prevent the trailer from being unlocked due to some unexpected circumstances. To unlock the trailer, step on the pedal to give the pedal a downward force to rotate the non-return claw and disengage the hook from the groove. After disengagement, release the pedal. Under the action of the reset torsion spring, the entire non-return claw returns to its initial state. The overall structure is simple and easy to operate.

[0018] (3) The utility model provides a trailer brake rod that can achieve brake locking during the self-resetting process. The brake rod is a threaded rod, and adjustment nuts are provided on the brake rod and on both sides of the brake rod. In this way, the front and rear positions of the brake rod can be adjusted by rotating the adjustment nuts to adjust the size of the braking force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a trailer embodiment of the utility model that can realize brake locking during the self-resetting process in a brake locking state;

[0020] Figure 2 It is a cross-sectional view of a trailer embodiment of the utility model that can realize brake locking during the self-resetting process in a towing state;

[0021] Figure 3 for Figure 2 A partial enlarged view of

[0022] Figure 4 It is a partial cross-sectional view of a trailer embodiment of the utility model that can realize brake locking during the self-resetting process in a towing state;

[0023] Figure 5 A cross-sectional view of a trailer embodiment of the utility model that can achieve brake locking during the self-resetting process in a brake locked state;

[0024] Figure 6 for Figure 5 A partial enlarged view of

[0025] Figure 7 It is a partial cross-sectional view of a trailer embodiment of the utility model that can achieve brake locking during the self-resetting process in a brake locked state.

[0026] The following are the descriptions of the reference numerals:

[0027] 1-mounting frame, 101-mounting base, 102-X-shaped cover; 2-axle, 3-wheel, 4-trailer handle, 5-mop shaft, 6-lining plate, 7-fixed seat, 71-guide cylinder, 72-fixed plate; 8-movable seat, 81-guide rod, 82-abutment plate; 9-self-resetting spring, 10-self-resetting top shaft, 11-push plate, 12-brake rod, 13-brake top rod, 14-brake guide shaft, 15-brake rod reset spring, 16-fixing nut, 17-adjusting nut, 18-hook, 19-check claw, 191-claw body, 192-pedal; 20-check claw shaft, 21-reset torsion spring, 22-operating handle. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 7 As shown, a trailer capable of brake locking during the self-resetting process of the utility model includes a handlebar assembly and a wheel 3, the handlebar assembly includes a mounting frame 1, the mounting frame 1 includes a mounting base 101 and an I-shaped cover plate 102 arranged on the upper surface of the mounting base 101, the I-shaped cover plate 102 is fixed to the upper surface of the mounting base 101 by bolts, the axle 2 is arranged at the bottom of the mounting base 101, and two wheels 3 are respectively arranged at both ends of the axle 2.

[0030] In order to achieve self-reset, a self-reset component is also provided, including a mop shaft 5 arranged on the mounting base 101, and a trailer handle 4 is hinged on the mop shaft 5. In order to facilitate towing, an operating handle 22 is provided at one end of the trailer handle 4 away from the mop shaft 5. There are two operating handles 22 and they are respectively located on both sides of the trailer handle 4, which can facilitate the operation of the operator. A spring seat is arranged on the side of the mounting base 101 facing the trailer handle 4. The spring seat is a telescopic mechanism, including a fixed seat 7, a movable seat 8 and a self-resetting spring 9, wherein the fixed plate 72 of the fixed seat 7 is connected to the side of the mounting base 101, and a guide cylinder 71 is arranged on the outer side of the fixed plate 72. The movable seat 8 includes a guide rod 81 coaxially arranged in the guide cylinder 71 and an abutment plate 82 arranged on the outer end surface of the guide rod 81. The self-resetting spring 9 is coaxially sleeved on the outer side of the guide cylinder 71 and the guide rod 81, and one end thereof is connected to the fixed plate 72, and the other end is connected to the abutment plate 82. A self-resetting top shaft 10 is arranged on the trailer handle 4 and at the bottom of the mop rotating shaft 5. The self-resetting top shaft 10 abuts against the outer end surface of the abutment plate 82, so that when the trailer handle 4 is in a position such as Figure 2 In the towing state shown, the self-resetting top shaft 10 will push the abutment plate 82 to move toward the wheel 3, thereby compressing the self-resetting spring 9. During the entire movement process, the guide rod 81 cooperates with the guide cylinder 71 to make the movable seat 8 move in the horizontal direction to ensure the stability of the movement. When the towing is released, that is, the external force acting on the trailer handle 4 disappears, the elastic potential energy accumulated by the self-resetting spring 9 is released, and the movable seat 8 will move in the direction away from the wheel 3, thereby pushing the trailer handle 4 to rotate counterclockwise around the mop shaft 5 through the self-resetting top shaft 10 to achieve self-resetting. The overall structure is simple, and through the cooperation of the spring seat and the self-resetting top shaft 10, the trailer handle 4 can be automatically reset after the towing is released.

[0031] In order to realize the function of brake locking synchronously during the self-reset process, a linkage brake assembly is also provided, which includes two push plates 11 respectively provided on both sides of the trailer handle 4, a brake rod guide shaft 14 provided on the "+"-shaped cover plate 102, and a brake rod 12 and a brake rod reset spring 15 sleeved on the brake rod guide shaft 14. The brake rod guide shaft 14 is provided to provide a motion guide for the brake rod 12. In order to ensure the connection stability of the brake rod guide shaft 14, through holes are respectively provided on the two side plates of the "+"-shaped cover plate 102. The brake rod guide shaft 14 is provided in the through holes. A limiting boss is provided at one end of the brake rod guide shaft 14 away from the push plate 11. The limiting boss abuts against the outer side surface of the corresponding side plate. A threaded section is provided at one end of the brake rod guide shaft 14 facing the push plate 11, and a fixing nut 16 is screwed on the threaded section. The fixing nut 16 abuts against the outer side surface of the corresponding side plate, so that the brake rod guide shaft 14 is firmly connected to the "+"-shaped cover plate 102.

[0032] The brake lever 12 is made of a square tube, which has good structural strength and low cost. The two ends of the brake lever 12 are arranged corresponding to the wheels 3 on both sides. In order to make the brake lever 12 move only along the extension direction of the brake lever guide shaft 14, a lining plate 6 is arranged on the upper surface of the mounting base 101. The lining plate 6 is connected to the mounting base 101 by bolts, and the lower surface of the brake lever 12 abuts the lining plate 6, so that the brake lever 12 will not move or rotate in other degrees of freedom when moving, and the lining plate 6 can also prevent the brake lever 12 from wearing the mounting base 101. The brake lever return spring 15 is arranged on the side of the brake lever 12 facing the wheel 3, and one end of the brake lever 12 abuts against the outer side wall of the brake lever 12, and the other end abuts against the inner wall of the side plate of the cross-shaped cover plate 102.

[0033] Brake push rods 13 are respectively arranged on the brake rod 12 at positions corresponding to the two push plates 11. The brake push rods 13 are used to cooperate with the push plates 11. When the entire trailer is unhooked, the trailer handle 4 rotates counterclockwise to reset itself under the action of the self-resetting assembly. At the same time, the push plate 11 will move toward the brake push rods 13. When the push plate 11 contacts the brake push rods 13, it will push the brake rod 12 to move toward the wheel 3. The brake rod 12 contacts the wheel 3 to generate braking force and achieve brake locking. The brake push rod 13 is a threaded rod, which is arranged in a mounting hole that penetrates the side wall of the brake rod 12, and adjustment nuts 17 are respectively arranged on the brake push rod 13 and on both sides of the brake rod 12, so that the front and rear positions of the brake push rod 13 can be adjusted by rotating the adjustment nuts 17, thereby adjusting the magnitude of the braking force.

[0034] Because the push plate 11 needs to abut against the brake top rod 13 during each self-resetting process, and also needs to push the brake top rod 13 to move until the brake rod 12 contacts the wheel 3, its structural strength determines the stability of each braking. Therefore, a reinforcing rib plate is provided on the outer side of the push plate 11, and the reinforcing rib plate is respectively connected to the push plate 11 and the side wall of the trailer handle 4, thereby strengthening the overall structural strength of the push plate 11.

[0035] To lock the trailer in place Figure 5 In the brake locking state shown, a non-return pawl shaft 20 is also provided on the trailer handle 4, and a non-return pawl 19 is connected to the non-return pawl shaft 20. The non-return pawl 19 includes a pawl body 191 installed on the non-return pawl shaft 20 and a pedal 192 arranged at one end of the pawl body 191. A reset torsion spring 21 is also sleeved on the non-return pawl shaft 20, one end of which is connected to the pawl body 191, and the other end is connected to the trailer handle 4. A groove is opened on the pawl body 191, and a hook 18 is provided on the upper surface of the I-shaped cover plate 102. When in the brake locking state, the hook 18 can be hooked with the non-return pawl 19 through the groove, so as to lock the entire trailer in the brake locking state, prevent the trailer from automatically unlocking due to some unexpected circumstances, and ensure the stability of the brake.

[0036] When in use, if it is necessary to lock the brakes of the towed trailer, the traction force applied to the trailer handle 4 is removed. At this time, the entire trailer handle 4 will rotate counterclockwise around the mop shaft 5 under the elastic force of the self-resetting spring 9. When the push plate 11 contacts the brake top rod 13, it will push the brake top rod 13 to move in the direction of the wheel 3, and then push the brake rod 12 to move in the direction of the wheel 3. At this time, the brake rod reset spring 15 will be compressed until the brake rod 12 presses the wheel 3. At the same time, the anti-return claw 19 will be hooked with the hook 18 through the groove on its claw body 191 under the action of the reset torsion spring 21, so that the entire trailer is locked in the brake state. If the trailer needs to be unlocked, a downward force needs to be applied to the pedal 192 of the anti-return claw 19, that is, the pedal 192 is stepped on, so that the anti-return claw 19 rotates around the anti-return claw shaft 20, and the hook 18 disengages from the groove of the anti-return claw 19. Then, a traction force is applied to the trailer handle 4, and the trailer handle 4 will rotate clockwise. At the same time, the push plate 11 moves in the direction away from the brake top rod 13 until it loses contact with the brake top rod 13, and the brake rod return spring 15 pushes the brake rod 13 to move in the direction away from the wheel 3 until the brake rod 13 loses contact with the surface of the wheel 3, completing the brake unlocking, and the anti-return claw 19 also returns to the initial position under the action of the return torsion spring 21, so as to perform the next braking operation.

[0037] The embodiments described above are merely descriptions of the specific implementation methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A trailer capable of achieving brake locking during the self-resetting process, characterized in that: It includes a handlebar assembly and a wheel (3); The handlebar assembly comprises a mounting frame (1), a wheel axle (2), a self-resetting assembly and a linkage brake assembly; The wheel axle (2) is arranged at the bottom of the mounting frame (1), and there are two wheels (3), which are respectively mounted at both ends of the wheel axle (2); The self-resetting assembly comprises a mop shaft (5) arranged on a mounting frame (1), and a tow handle (4) is hingedly connected to the mop shaft (5); a spring seat is arranged on the side of the mounting frame (1) facing the tow handle (4), and the spring seat comprises a fixed seat (7) and a movable seat (8); the fixed seat (7) comprises a fixed plate (72) connected to the side of the mounting frame (1) and a guide cylinder (71) arranged on the outer side of the fixed plate (72); the movable seat (8) comprises a spring seat coaxially arranged on the guide cylinder (7 1) and a contact plate (82) arranged on the outer end surface of the guide rod (81), and a self-resetting spring (9) is coaxially sleeved on the outer sides of the guide cylinder (71) and the guide rod (81), one end of the self-resetting spring (9) is connected to the fixing plate (72), and the other end is connected to the contact plate (82); a self-resetting top shaft (10) is arranged on the mop handle (4) and at a position at the bottom of the mop rotating shaft (5), and the self-resetting top shaft (10) is in contact with the outer end surface of the contact plate (82); The linkage brake assembly comprises two push plates (11) respectively arranged on both sides of the trailer handle (4), a brake rod guide shaft (14) arranged on the mounting frame (1), and a brake rod (12) and a brake rod return spring (15) sleeved on the brake rod guide shaft (14); one end of the brake rod return spring (15) abuts against the mounting frame (1), and the other end abuts against the brake rod (12), and the brake rod return spring (15) is located on the side of the brake rod (12) facing the wheel (3); the two ends of the brake rod (12) are respectively arranged corresponding to the two wheels (3), and brake top rods (13) are respectively arranged on the brake rod (12) at positions corresponding to the two push plates (11).

2. The trailer capable of achieving brake locking during the self-resetting process according to claim 1, characterized in that: The mounting frame (1) comprises a mounting base (101) and an "X"-shaped cover plate (102) arranged on the upper surface of the mounting base (101); the mop rotating shaft (5) is arranged on the mounting base (101); the fixing plate (72) is connected to the side of the mounting base (101); the "X"-shaped cover plate (102) is fixed to the upper surface of the mounting base (101) by bolts; two side plates of the "X"-shaped cover plate (102) are respectively provided with through holes; a brake lever guide shaft (14) is arranged in the through hole; the brake lever guide shaft (14) is away from the push plate (11 ) is provided with a limiting boss at one end, the limiting boss abuts against the outer side surface of the corresponding side plate, a threaded section is provided at one end of the brake lever guide shaft (14) facing the push plate (11), and a fixing nut (16) is screwed onto the threaded section, the fixing nut (16) abuts against the outer side surface of the corresponding side plate; the brake lever (12) is a square tube, the lower surface of which abuts against the lining plate (6) provided on the upper surface of the mounting base (101), one end of the brake lever return spring (15) abuts against the outer side wall of the brake lever (12), and the other end abuts against the inner wall of the side plate of the "X"-shaped cover plate (102).

3. The trailer capable of achieving brake locking during the self-resetting process according to claim 2, characterized in that: A hook (18) is provided on the upper surface of the top plate of the "X"-shaped cover plate (102); a non-return claw rotating shaft (20) is provided on the trailer handle (4); a non-return claw (19) is connected to the non-return claw rotating shaft (20); the non-return claw (19) comprises a claw body (191) mounted on the non-return claw rotating shaft (20) and a pedal (192) arranged at one end of the claw body (191); a reset torsion spring (21) is sleeved on the non-return claw rotating shaft (20); one end of the reset torsion spring (21) is connected to the claw body (191) and the other end is connected to the trailer handle (4); a groove is provided on the claw body (191); when the brake is in a locked state, the hook (18) can be hooked with the non-return claw (19) through the groove.

4. The trailer capable of achieving brake locking during the self-resetting process according to claim 3, characterized in that: The brake top rod (13) is a threaded rod. A mounting hole is provided through the side wall of the brake rod (12). The brake top rod (13) is located in the mounting hole. Adjustment nuts (17) are provided on the brake top rod (13) and on both sides of the brake rod (12).

5. The trailer capable of achieving brake locking during the self-resetting process according to claim 4, characterized in that: The outer side surface of the push plate (11) is provided with a reinforcing rib plate, and the reinforcing rib plate is respectively connected to the push plate (11) and the side wall of the trailer handle (4).

6. The trailer capable of achieving brake locking during the self-resetting process according to claim 5, characterized in that: An operating handle (22) is provided at one end of the trailer handle (4) away from the mop rotating shaft (5), and there are two operating handles (22) which are respectively located on both sides of the trailer handle (4).

Images