Inverted frame body of motorcycle assembling device

Abstract

The utility model relates to the technical field of motorcycle assembling devices, in particular to an inverted frame body of a motorcycle assembling device, which can be adjusted more conveniently, effectively improve the working efficiency and bring convenience to workers. Comprising a bottom plate, fixed vertical pipes are fixedly connected to one sides of the top ends of two supporting cross rods, upper adjusting rods are slidably arranged on the two fixed vertical pipes, an upper cross beam is fixedly connected between the two upper adjusting rods, a U-shaped buffering cushion is fixedly arranged at the top end of the upper cross beam, and the front end and the rear end of the U-shaped buffering cushion are fixedly connected with the two upper adjusting rods correspondingly; the supporting transverse pipe is installed on the two sets of lower adjusting rods through locking screws matched with the adjusting holes, connecting plates are hinged to one ends of the two sets of transmission battens on the left side and one ends of the two sets of transmission battens on the right side, upper transmission rods and lower transmission rods are hinged to the outer sides of the two sets of connecting plates respectively, and the top ends of the upper transmission rods are hinged to the bottom end of the upper cross beam. The top end of the lower transmission rod is hinged to the bottom end of the lower beam.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle assembly devices, in particular to an inverted frame body of a motorcycle assembly device. Background Technique

[0002] In the technical field of motorcycle assembly, during the assembly of a motorcycle using an assembly line, it is necessary to invert the motorcycle frame on the inverted frame body of the assembly line to install components such as the flat fork, middle crank chain, and rear shock absorber. Although the existing inverted frame body can meet the inverted assembly of the motorcycle frame to a certain extent, it has a fixed integral structure. One type of inverted frame body can only meet the assembly work of one model of motorcycle frame, with the problems of being unable to deform and not being able to meet the assembly of multiple models of motorcycle frames. Therefore, it is necessary to develop a new inverted frame body to solve the above problems existing in the existing fixed inverted frame body.

[0003] After retrieval, Chinese Patent Publication No. CN216504970U discloses an inverted frame body of a motorcycle assembly device, which includes a bottom plate, a lower support frame body, an upper support frame body, a regulator, and a support vertical rod. Two groups of support vertical rods are symmetrically and fixedly installed on the bottom plate. The upper end of the support vertical rod is fixedly installed with a support cross bar. Above one end of the support cross bar, an adjustment vertical pipe is fixedly installed. The upper support frame body is inserted on the adjustment vertical pipe, and the adjustment vertical pipe is intermittently and fixedly connected to the upper support frame body through a regulator. Between the other end of the support cross bar and the bottom end of the corresponding support vertical rod, an adjustment inclined pipe is fixedly installed. The lower support frame body is installed on the adjustment inclined pipe, and the adjustment inclined pipe is intermittently and fixedly connected to the lower support frame body through a regulator. The inverted frame body of this motorcycle assembly device has a compact structure and ingenious design. After adjustment, it can adapt to the assembly work of multiple models of motorcycle frames, thus solving the problems existing in the existing inverted frame body of motorcycles, such as being unable to deform and not being able to meet the assembly of multiple models of motorcycle frames, and is especially suitable for the needs of motorcycle frame assembly.

[0004] However, there are certain drawbacks in the above patent. When adjusting the upper support frame body and the lower support frame body, it is necessary to adjust multiple regulators to achieve the adjustment, and the adjustment cannot be carried out synchronously, resulting in relatively troublesome adjustment of the frame body, affecting work efficiency and bringing inconvenience to the staff. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides an inverted frame body of a motorcycle assembly device that can make the adjustment of the frame body more convenient, effectively improve work efficiency, and bring convenience to the staff.

[0006] Technical Solution

[0007] To achieve the above object, the present utility model provides the following technical solution: An inverted frame body of a motorcycle assembly device, comprising a bottom plate, a support mechanism and an adjustment mechanism. The support mechanism includes two groups of support vertical rods, which are symmetrically and fixedly installed on the left side of the top end of the bottom plate. At the top ends of the two groups of support vertical rods, support cross bars are fixedly provided. On one side of the top ends of the two groups of support cross bars, fixed vertical pipes are fixedly connected. On the two groups of fixed vertical pipes, upper adjustment rods are slidably provided. Between the two groups of upper adjustment rods, an upper cross beam is fixedly connected. At the top end of the upper cross beam, a U-shaped buffer pad is fixedly provided. The front and rear ends of the U-shaped buffer pad are respectively fixedly connected to the two groups of upper adjustment rods. Between the right ends of the two groups of support cross bars and the top end of the bottom plate, fixed inclined pipes are fixedly connected. On one side of the two groups of fixed inclined pipes, reinforcing rods are vertically and fixedly connected. The bottom ends of the two groups of reinforcing rods are fixedly connected to the top end of the bottom plate. On the two groups of fixed inclined pipes, lower adjustment rods are slidably provided. Between the two groups of lower adjustment rods, a lower cross beam is fixedly connected. On the two groups of lower adjustment rods, multiple groups of adjustment holes are equidistantly provided. Between the two groups of lower adjustment rods, a support cross pipe is provided. The support cross pipe is installed on the two groups of lower adjustment rods through the cooperation of a locking screw and the adjustment holes. The adjustment mechanism includes a fixed frame, which is fixedly installed on a group of support cross bars closer to the front. On the fixed frame and the two groups of support cross bars, a bidirectional threaded rod is rotatably installed. On the outer wall of the bidirectional threaded rod near the front end, a turntable is fixedly sleeved. Between the two groups of support cross bars, a guide rod is fixedly connected. On the bidirectional threaded rod, two groups of transmission blocks are symmetrically screwed and sleeved. On the two groups of transmission blocks, guide holes are provided. The two groups of transmission blocks are slidably sleeved on the guide rod through the cooperation of the guide holes. On the two groups of transmission blocks, two groups of transmission strip plates are symmetrically hinged. And at one end of the two groups of left transmission strip plates and one end of the two groups of right transmission strip plates, connecting plates are hinged. On the outer sides of the two groups of connecting plates, an upper transmission rod and a lower transmission rod are respectively hinged. The top end of the upper transmission rod is hinged to the bottom end of the upper cross beam, and the top end of the lower transmission rod is hinged to the bottom end of the lower cross beam.

[0008] Preferably, a limiting mechanism is provided on the fixed frame. The limiting mechanism includes a T-shaped cylindrical pin. A sliding hole is provided at the front end of the fixed frame. The T-shaped cylindrical pin is slidably installed on the fixed frame through the cooperation with the sliding hole. A spring is sleeved on the T-shaped cylindrical pin. The two ends of the spring are respectively fixedly connected to the front end of the fixed frame and the T-shaped cylindrical pin. On the turntable, multiple groups of positioning holes are annularly arranged. The T-shaped cylindrical pin is inserted through the turntable through the cooperation with the positioning holes, and the end of the T-shaped cylindrical pin abuts against the support cross bar under the action of the spring.

[0009] Preferably, on both sides of the bottom ends of the two groups of upper adjustment rods and on both sides of the bottom ends of the two groups of lower adjustment rods, limiting blocks are fixedly provided. At the front and rear ends of the two groups of fixed vertical pipes and at the front and rear ends of the two groups of fixed inclined pipes, limiting grooves are provided in cooperation with the limiting blocks. The two groups of upper adjustment rods are respectively slidably installed on the two groups of fixed vertical pipes through the cooperation of the limiting blocks and the limiting grooves. The two groups of lower adjustment rods are respectively slidably installed on the two groups of fixed inclined pipes through the cooperation of the limiting blocks and the limiting grooves.

[0010] Preferably, a pull ring is fixedly provided at the front end of the T-shaped cylindrical pin.

[0011] Preferably, anti-slip rubber pads are fixedly provided at the four corners of the bottom end of the bottom plate.

[0012] Preferably, sliding sleeves are fixedly provided in the guide holes of the two transmission blocks.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: When in use, when the frame needs to be adjusted, the bidirectional threaded rod is rotated through the turntable, so that the bidirectional threaded rod drives the transmission block to slide inwards along the guide rod. The transmission block then pushes the connecting plate outwards through the transmission strip plate, so that the two connecting plates respectively push the upper cross beam and the lower cross beam to move through the upper transmission rod and the lower transmission rod. Thus, the upper cross beam drives the upper adjusting rod to slide upwards along the fixed vertical pipe, and the lower cross beam drives the lower adjusting rod to slide outwards along the fixed inclined pipe. By rotating the turntable in the reverse direction, the upper adjusting rod slides downwards along the fixed vertical pipe, and the lower adjusting rod slides inwards along the fixed inclined pipe, so as to realize the adjustment of the frame. This structure can synchronously adjust the upper adjusting rod and the lower adjusting rod on the frame, making the adjustment of the frame more convenient, effectively improving the work efficiency and bringing convenience to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an isometric structural view of the present utility model;

[0015] Figure 2 is a left isometric structural view of the present utility model;

[0016] Figure 3 is a partial isometric structural view of the support mechanism in the present utility model;

[0017] Figure 4 is an isometric structural view of the connection between 05 and 06 in the present utility model;

[0018] Figure 5 is a partial isometric structural view of the adjustment mechanism in the present utility model;

[0019] Figure 6 is a left isometric structural view of the cooperation between 10 and 12 in the present utility model;

[0020] Reference signs in the drawings: 1, bottom plate; 2, supporting vertical rod; 3, supporting cross rod; 4, fixed vertical pipe; 5, upper adjusting rod; 6, upper cross beam; 7, U-shaped buffer pad; 8, fixed inclined pipe; 9, strengthening rod; 10, lower adjusting rod; 11, lower cross beam; 12, supporting horizontal pipe; 13, fixing bracket; 14, bidirectional threaded rod; 15, turntable; 16, guiding rod; 17, driving block; 18, driving strip plate; 19, connecting plate; 20, upper driving rod; 21, lower driving rod; 22, T-shaped cylindrical pin; 23, spring; 24, limiting block; 25, limiting groove; 26, pull ring; 27, anti-slip rubber pad; 28, sliding sleeve. Detailed implementation manners

[0021] The following combines the drawings and embodiments to further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1 - 6, the inverted frame of a motorcycle assembly device of the present utility model includes a bottom plate 1. Two groups of support vertical rods 2 are symmetrically and fixedly installed on the left side of the top of the bottom plate 1. At the top of each of the two groups of support vertical rods 2, a support cross bar 3 is fixedly provided. On one side of the top of each of the two groups of support cross bars 3, a fixed vertical pipe 4 is fixedly connected. On each of the two groups of fixed vertical pipes 4, an upper adjusting rod 5 is slidably provided. Between the two groups of upper adjusting rods 5, an upper cross beam 6 is fixedly connected. At the top of the upper cross beam 6, a U-shaped buffer pad 7 is fixedly provided. The front and rear ends of the U-shaped buffer pad 7 are respectively fixedly connected to the two groups of upper adjusting rods 5. Between the right ends of the two groups of support cross bars 3 and the top of the bottom plate 1, fixed inclined pipes 8 are fixedly connected. On one side of each of the two groups of fixed inclined pipes 8, a reinforcing rod 9 is vertically fixedly connected. The bottom ends of the two groups of reinforcing rods 9 are fixedly connected to the top of the bottom plate 1. On each of the two groups of fixed inclined pipes 8, a lower adjusting rod 10 is slidably provided. Between the two groups of lower adjusting rods 10, a lower cross beam 11 is fixedly connected. On each of the two groups of lower adjusting rods 10, multiple groups of adjusting holes are equidistantly provided. Between the two groups of lower adjusting rods 10, a support cross pipe 12 is provided. The support cross pipe 12 is installed on the two groups of lower adjusting rods 10 through the cooperation of locking screws and the adjusting holes. A fixed frame 13 is fixedly installed on the front group of support cross bars 3. On the fixed frame 13 and the two groups of support cross bars 3, a bidirectional threaded rod 14 is rotatably installed. On the outer wall of the bidirectional threaded rod 14 near the front end, a turntable 15 is fixedly sleeved. Between the two groups of support cross bars 3, a guide rod 16 is fixedly connected. On the bidirectional threaded rod 14, two groups of transmission blocks 17 are symmetrically screwed and sleeved. On each of the two groups of transmission blocks 17, a guide hole is provided. The two groups of transmission blocks 17 are slidably sleeved on the guide rod 16 through the cooperation of the guide holes. On each of the two groups of transmission blocks 17, two groups of transmission strip plates 18 are symmetrically hinged. And one end of the two groups of left transmission strip plates 18 and one end of the two groups of right transmission strip plates 18 are respectively hinged with a connecting plate 19. On the outer sides of the two groups of connecting plates 19, an upper transmission rod 20 and a lower transmission rod 21 are respectively hinged. The top end of the upper transmission rod 20 is hinged to the bottom end of the upper cross beam 6, and the top end of the lower transmission rod 21 is hinged to the bottom end of the lower cross beam 11; when in use, when the frame needs to be adjusted, the bidirectional threaded rod 14 is rotated through the turntable 15, so that the bidirectional threaded rod 14 drives the transmission blocks 17 to slide inwards along the guide rod 16. The transmission blocks 17 then push the connecting plates 19 to move outwards through the transmission strip plates 18, so that the two groups of connecting plates 19 respectively push the upper cross beam 6 and the lower cross beam 11 to move through the upper transmission rod 20 and the lower transmission rod 21. Thus, the upper cross beam 6 drives the upper adjusting rod 5 to slide upwards along the fixed vertical pipe 4, and the lower cross beam 11 drives the lower adjusting rod 10 to slide outwards along the fixed inclined pipe 8. By rotating the turntable 15 in the reverse direction, the upper adjusting rod 5 slides downwards along the fixed vertical pipe 4, and the lower adjusting rod 10 slides inwards along the fixed inclined pipe 8. In this way, the adjustment of the frame is realized. This structure can synchronously adjust the upper adjusting rod 5 and the lower adjusting rod 10 on the frame, so that the adjustment of the frame is more convenient, effectively improving the work efficiency and bringing convenience to the staff.

[0024] Embodiment 2

[0025] Please refer to Figures 1 - 6, the inverted frame of a motorcycle assembly device of the present utility model includes a bottom plate 1. Two groups of support vertical rods 2 are symmetrically and fixedly installed on the left side of the top of the bottom plate 1. At the top of each of the two groups of support vertical rods 2, there is fixedly provided a support cross bar 3. On one side of the top of each of the two groups of support cross bars 3, there is fixedly connected a fixed vertical pipe 4. On each of the two groups of fixed vertical pipes 4, there is slidably provided an upper adjusting rod 5. Between the two groups of upper adjusting rods 5, there is fixedly connected an upper cross beam 6. At the top of the upper cross beam 6, there is fixedly provided a U-shaped buffer pad 7. The front and rear ends of the U-shaped buffer pad 7 are respectively fixedly connected to the two groups of upper adjusting rods 5. Between the right ends of the two groups of support cross bars 3 and the top of the bottom plate 1, there is fixedly connected a fixed inclined pipe 8. On one side of each of the two groups of fixed inclined pipes 8, there is perpendicularly fixedly connected a reinforcing rod 9. The bottom ends of the two groups of reinforcing rods 9 are fixedly connected to the top of the bottom plate 1. On each of the two groups of fixed inclined pipes 8, there is slidably provided a lower adjusting rod 10. Between the two groups of lower adjusting rods 10, there is fixedly connected a lower cross beam 11. On each of the two groups of lower adjusting rods 10, there are equidistantly provided multiple groups of adjusting holes. Between the two groups of lower adjusting rods 10, there is provided a support cross pipe 12. The support cross pipe 12 is installed on the two groups of lower adjusting rods 10 through the cooperation of a locking screw and the adjusting holes. A fixed frame 13 is fixedly installed on the front group of support cross bars 3. On the fixed frame 13 and the two groups of support cross bars 3, there is rotatably installed a bidirectional threaded rod 14. On the outer wall of the bidirectional threaded rod 14 near the front end, there is fixedly sleeved a turntable 15. On the fixed frame 13, there is provided a limiting mechanism. The limiting mechanism includes a T-shaped cylindrical pin 22. There is a sliding hole at the front end of the fixed frame 13. The T-shaped cylindrical pin 22 is slidably installed on the fixed frame 13 through the cooperation with the sliding hole. A spring 23 is sleeved on the T-shaped cylindrical pin 22. The two ends of the spring 23 are respectively fixedly connected to the front end of the fixed frame 13 and the T-shaped cylindrical pin 22. On the turntable 15, there are multiple groups of positioning holes arranged in an annular array. The T-shaped cylindrical pin 22 is inserted through the cooperation with the positioning holes on the turntable 15, and the end of the T-shaped cylindrical pin 22 abuts against the support cross bar 3 under the action of the spring 23. Between the two groups of support cross bars 3, there is fixedly connected a guide rod 16. On the bidirectional threaded rod 14, there are symmetrically screwed and sleeved two groups of transmission blocks 17. On each of the two groups of transmission blocks 17, there is a guide hole. The two groups of transmission blocks 17 are slidably sleeved on the guide rod 16 through the cooperation of the guide holes. On each of the two groups of transmission blocks 17, there are symmetrically hinged two groups of transmission strip plates 18. And one end of the two groups of left transmission strip plates 18 and one end of the two groups of right transmission strip plates 18 are respectively hinged with a connecting plate 19. On the outer sides of the two groups of connecting plates 19, there are respectively hinged an upper transmission rod 20 and a lower transmission rod 21. The top end of the upper transmission rod 20 is hinged to the bottom end of the upper cross beam 6. The top end of the lower transmission rod 21 is hinged to the bottom end of the lower cross beam 11;During use, when the frame needs to be adjusted, the bidirectional threaded rod 14 is rotated through the turntable 15, so that the bidirectional threaded rod 14 drives the transmission block 17 to slide inward along the guide rod 16. The transmission block 17 then pushes the connecting plate 19 outward through the transmission strip plate 18, so that the two groups of connecting plates 19 respectively push the upper cross beam 6 and the lower cross beam 11 to move through the upper transmission rod 20 and the lower transmission rod 21. Thus, the upper cross beam 6 drives the upper adjusting rod 5 to slide upward along the fixed vertical pipe 4, and the lower cross beam 11 drives the lower adjusting rod 10 to slide outward along the fixed inclined pipe 8. By rotating the turntable 15 in the reverse direction, the upper adjusting rod 5 slides downward along the fixed vertical pipe 4, and the lower adjusting rod 10 slides inward along the fixed inclined pipe 8, so as to realize the adjustment of the frame. This structure can synchronously adjust the upper adjusting rod 5 and the lower adjusting rod 10 on the frame, making the adjustment of the frame more convenient, effectively improving the work efficiency and bringing convenience to the staff.

[0026] A limiting mechanism is arranged on the fixed frame 13. The limiting mechanism includes a T-shaped cylindrical pin 22. A sliding hole is provided at the front end of the fixed frame 13. The T-shaped cylindrical pin 22 is slidably installed on the fixed frame 13 through cooperation with the sliding hole. A spring 23 is sleeved on the T-shaped cylindrical pin 22. Both ends of the spring 23 are fixedly connected to the front end of the fixed frame 13 and the T-shaped cylindrical pin 22 respectively. Multiple groups of positioning holes are annularly arranged on the turntable 15. The T-shaped cylindrical pin 22 is inserted through the turntable 15 through cooperation with the positioning holes, and the end of the T-shaped cylindrical pin 22 abuts against the support cross bar 3 under the action of the spring 23. When adjusting the frame, first pull the T-shaped cylindrical pin 22 out of the positioning hole of the turntable 15 with one hand, so that the spring 23 is stretched. Then, turn the bidirectional threaded rod 14 through the turntable 15 with the other hand for adjustment. After adjusting the position, align the positioning hole at the corresponding position with the sliding hole, and then release the T-shaped cylindrical pin 22, so that the T-shaped cylindrical pin 22 is inserted into the positioning hole at the corresponding position under the action of the spring 23 rebounding, limiting the turntable 15 and making the turntable 15 no longer able to rotate, which can ensure that the position of the frame after adjustment remains unchanged and improve the stability.

[0027] Limiting blocks 24 are fixedly arranged on both sides of the bottom ends of the two groups of upper adjusting rods 5 and both sides of the bottom ends of the two groups of lower adjusting rods 10. Limiting grooves 25 are provided at the front and rear ends of the two groups of fixed vertical pipes 4 and the front and rear ends of the two groups of fixed inclined pipes 8 in cooperation with the limiting blocks 24. The two groups of upper adjusting rods 5 are respectively slidably installed on the two groups of fixed vertical pipes 4 through the cooperation of the limiting blocks 24 and the limiting grooves 25. The two groups of lower adjusting rods 10 are respectively slidably installed on the two groups of fixed inclined pipes 8 through the cooperation of the limiting blocks 24 and the limiting grooves 25. By providing the limiting blocks 24 and the limiting grooves 25, when the upper adjusting rod 5 and the lower adjusting rod 10 slide outward, the limiting blocks 24 will be driven to slide along the limiting grooves 25, playing a limiting role to prevent the upper adjusting rod 5 and the lower adjusting rod 10 from detaching.

[0028] A pull ring 26 is fixedly provided at the front end of the T-shaped cylindrical pin 22; by providing the pull ring 26, it can make the pulling of the T-shaped cylindrical pin 22 more convenient.

[0029] Anti-slip rubber pads 27 are fixedly provided at the four corners of the bottom end of the bottom plate 1; by providing the anti-slip rubber pads 27, it can effectively prevent the bottom plate 1 from slipping on the ground placement.

[0030] Sliding sleeves 28 are fixedly provided in the guide holes of the two groups of transmission blocks 17; by providing the sliding sleeves 28, it can make the sliding of the transmission blocks 17 on the guide rods 16 more smooth.

[0031] For the inverted frame body of a motorcycle assembly device of the present utility model, its working principle is as follows. When in use, when the frame body needs to be adjusted, the bidirectional threaded rod 14 is rotated through the turntable 15, so that the bidirectional threaded rod 14 drives the transmission block 17 to slide inward along the guide rod 16. The transmission block 17 then pushes the connecting plate 19 outward through the transmission strip plate 18, so that the two groups of connecting plates 19 respectively push the upper cross beam 6 and the lower cross beam 11 to move through the upper transmission rod 20 and the lower transmission rod 21, so that the upper cross beam 6 drives the upper adjusting rod 5 to slide upward along the fixed vertical pipe 4, and the lower cross beam 11 drives the lower adjusting rod 10 to slide outward along the fixed inclined pipe 8. By rotating the turntable 15 in the reverse direction, the upper adjusting rod 5 slides downward along the fixed vertical pipe 4, and the lower adjusting rod 10 slides inward along the fixed inclined pipe 8, so as to realize the adjustment of the frame body. When adjusting the frame body, first pull out the T-shaped cylindrical pin 22 from the positioning hole of the turntable 15 with one hand, so that the spring 23 is stretched, and then the other hand rotates the bidirectional threaded rod 14 through the turntable 15 for adjustment. After adjusting the position, align the positioning hole at the corresponding position with the sliding hole, and then release the T-shaped cylindrical pin 22, so that the T-shaped cylindrical pin 22 is inserted into the positioning hole at the corresponding position under the action of the spring 23 rebounding, to limit the turntable 15 and make the turntable 15 no longer able to rotate. After adjusting the frame body according to the motorcycle frame model, place the motorcycle frame on the upper adjusting rod 5 and the support cross pipe 12 to carry out the assembly work.

[0032] For the inverted frame body of a motorcycle assembly device of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; in the present utility model, the support cross pipe is installed on the two groups of lower adjusting rods through the cooperation of the locking screw and the adjusting hole. This installation method is the installation method disclosed in the patent publication number CN216504970U, so it will not be elaborated here.

[0033] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A flip-up frame of a motorcycle assembly device, comprising a bottom plate (1), characterized in that: It also includes a supporting mechanism and an adjusting mechanism; The support mechanism comprises two groups of support vertical rods (2), the two groups of support vertical rods (2) are symmetrically fixedly installed on the left side of the top of the bottom plate (1), the tops of the two groups of support vertical rods (2) are fixedly provided with support cross bars (3), one side of the tops of the two groups of support cross bars (3) are fixedly connected with fixed vertical pipes (4), the two groups of fixed vertical pipes (4) are slidably provided with upper adjustment rods (5), the two groups of upper adjustment rods (5) are fixedly connected with an upper cross beam (6), the top of the upper cross beam (6) is fixedly provided with a U-shaped buffer pad (7), the front and rear ends of the U-shaped buffer pad (7) are respectively fixedly connected to the two groups of upper adjustment rods (5), and the right ends of the two groups of support cross bars (3) are fixedly connected to the two groups of upper adjustment rods (5). A fixed oblique tube (8) is fixedly connected to the top of the bottom plate (1), one side of the two groups of fixed oblique tubes (8) is vertically fixedly connected with a reinforcing rod (9), the bottom ends of the two groups of reinforcing rods (9) are fixedly connected to the top of the bottom plate (1), the two groups of fixed oblique tubes (8) are slidably provided with a lower adjustment rod (10), a lower cross beam (11) is fixedly connected between the two groups of lower adjustment rods (10), a plurality of adjustment holes are equidistantly provided on the two groups of lower adjustment rods (10), a supporting cross tube (12) is provided between the two groups of lower adjustment rods (10), and the supporting cross tube (12) is installed on the two groups of lower adjustment rods (10) by means of locking screws in cooperation with the adjustment holes; The adjustment mechanism comprises a fixing frame (13), the fixing frame (13) is fixedly mounted on a front group of supporting cross bars (3), a bidirectional threaded rod (14) is rotatably mounted on the fixing frame (13) and the two groups of supporting cross bars (3), a rotating disk (15) is fixedly sleeved on the outer wall of the bidirectional threaded rod (14) near the front end, a guide rod (16) is fixedly connected between the two groups of supporting cross bars (3), two groups of transmission blocks (17) are symmetrically screwed on the bidirectional threaded rod (14), and the two groups of transmission blocks (17) are both provided with guide holes, and the two The transmission blocks (17) are slidably mounted on the guide rod (16) through the guide holes. The two transmission blocks (17) are symmetrically hinged with two transmission strips (18). One end of the two transmission strips (18) on the left side and one end of the two transmission strips (18) on the right side are hinged with a connecting plate (19). The outer sides of the two connecting plates (19) are hinged with an upper transmission rod (20) and a lower transmission rod (21). The top end of the upper transmission rod (20) is hinged with the bottom end of the upper crossbeam (6), and the top end of the lower transmission rod (21) is hinged with the bottom end of the lower crossbeam (11).

2. The inverted frame of a motorcycle assembly device according to claim 1, characterized in that: The fixing frame (13) is provided with a limiting mechanism, and the limiting mechanism comprises a T-shaped cylindrical pin (22). A sliding hole is provided at the front end of the fixing frame (13). The T-shaped cylindrical pin (22) is slidably mounted on the fixing frame (13) by cooperating with the sliding hole. A spring (23) is sleeved on the T-shaped cylindrical pin (22). Two ends of the spring (23) are respectively fixedly connected to the front end of the fixing frame (13) and the T-shaped cylindrical pin (22). A plurality of groups of positioning holes are provided in an annular array on the rotating disk (15). The T-shaped cylindrical pin (22) is inserted into the rotating disk (15) by cooperating with the positioning holes, and the end of the T-shaped cylindrical pin (22) is pressed against the supporting cross bar (3) under the action of the spring (23).

3. The inverted frame of a motorcycle assembly device according to claim 2, characterized in that: Limit blocks (24) are fixedly provided on both sides of the bottom ends of the two groups of upper adjustment rods (5) and on both sides of the bottom ends of the two groups of lower adjustment rods (10); limit grooves (25) are provided at the front and rear ends of the two groups of fixed vertical pipes (4) and the front and rear ends of the two groups of fixed inclined pipes (8) to cooperate with the limit blocks (24); the two groups of upper adjustment rods (5) are respectively slidably installed on the two groups of fixed vertical pipes (4) through the cooperation of the limit blocks (24) and the limit grooves (25); and the two groups of lower adjustment rods (10) are respectively slidably installed on the two groups of fixed inclined pipes (8) through the cooperation of the limit blocks (24) and the limit grooves (25).

4. The inverted frame of a motorcycle assembly device according to claim 3, characterized in that: A pull ring (26) is fixedly provided at the front end of the T-shaped cylindrical pin (22).

5. The inverted frame of a motorcycle assembly device according to claim 4, characterized in that: Anti-slip rubber pads (27) are fixedly provided at the four corners of the bottom end of the base plate (1).

6. The inverted frame of a motorcycle assembly device according to claim 5, characterized in that: Sliding sleeves (28) are fixedly arranged in the guide holes of the two groups of transmission blocks (17).

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