A roller bed type vehicle body transmission system

Abstract

The present invention discloses a rolling bed type vehicle body transmission system, comprising a transport support, a plurality of mutually parallel conveying shafts are rotatably arranged on the top of the transport support, a support wheel is arranged on the conveying shaft, a limit disk is coaxially fixedly arranged on the end of the support wheel, a conveying pulley is arranged in the middle of the conveying shaft, the conveying pulleys on two adjacent conveying shafts are connected by a first synchronous belt transmission, a conveying drive motor is fixed on the transport support and connected to the conveying pulley by a second synchronous belt, a buffer stop assembly is fixedly arranged on the transport support, a precise positioning assembly is fixedly arranged on the transport support, and lifting assemblies are arranged on both sides of the transport support. After the vehicle body is transported to the corresponding position, the sliding support is stopped by the buffer stop assembly, and then the sliding support is precisely positioned by the precise positioning assembly, and then the vehicle body is directly lifted upward by the lifting assembly, thereby achieving the purpose of precise positioning and efficient production.

Description

Technical Field

[0001] The invention relates to the technical field of body-in-white production lines, and in particular to a roller bed type body-in-white transmission system. Background Art

[0002] The car body needs to be precisely positioned during the production process. In the traditional production line, the roller bed needs to lift the white body from the fixture to a higher height, then transfer it to the next station and then lower it to the fixture for positioning before production. This lifting roller bed transmission solution has high production costs, complex structure, inconvenient maintenance, high lifting height, poor stability, waste of time and low production efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a vehicle body transmission method in which a roller bed does not rise or fall and a tooling fixture rises or falls with a small stroke.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A roller bed type vehicle body transmission system comprises a transport bracket, a sliding bracket, a transport drive motor, a transport shaft, a transport pulley, a support wheel, a limit plate, a buffer stop assembly, a precise positioning assembly and a lifting assembly. The top of the transport bracket is rotatably provided with a plurality of mutually parallel transport shafts, and the axis lines of all the transport shafts are in the same plane. Both ends of each transport shaft are fixedly and coaxially provided with the support wheel cooperating with the sliding bracket, and the end of the support wheel is coaxially fixedly provided with the limit plate for preventing the sliding bracket from sliding to both sides. Each transport shaft The conveyor pulley is coaxially fixedly arranged at the middle part, the conveyor pulleys on the two adjacent conveyor shafts are connected by a first synchronous belt transmission, the conveying drive motor is fixed on the transport bracket and is connected to the conveyor pulley transmission by a second synchronous belt, the buffer stop assembly is fixedly arranged on the transport bracket and is used to limit the movement of the sliding bracket, the precise positioning assembly is fixedly arranged on the transport bracket and cooperates with the sliding bracket, the lifting assemblies are arranged on both sides of the transport bracket, and the lifting assemblies are used to drive the body on the sliding bracket to move up.

[0006] Furthermore, the precise positioning assembly includes a positioning telescopic cylinder and a positioning rod, the positioning telescopic cylinder is vertically fixed on the transport bracket, one end of the positioning rod is coaxially arranged on the output shaft of the positioning telescopic cylinder, and the other end of the positioning rod is provided with a tapered end head, the transport bracket is provided with a first positioning hole that cooperates with the positioning rod, and the sliding bracket is provided with a second positioning hole that cooperates with the positioning rod.

[0007] Further, the buffer stop assembly includes a stop telescopic cylinder, a stop bracket, a limit guide wheel, a limit guide plate, a stop sleeve, a stop moving rod, a buffer plate, and a return spring. The stop bracket is fixedly arranged on the transport bracket, the stop telescopic cylinder is arranged on the stop bracket, the limit guide plate is arranged on the output shaft of the stop telescopic cylinder, the opposite sides of the limit guide plate are respectively matched with the limit guide wheels, the limit guide wheels are rotatably arranged on the stop bracket, and the axis line of the limit guide wheel is parallel to the axis line of the support wheel. The stop sleeve is vertically and fixedly arranged on the limit guide plate, one end of the stop moving rod is slidably arranged in the stop sleeve, the other end of the stop moving rod is fixedly provided with the buffer plate which is matched with the sliding bracket, the return spring is sleeved on the stop moving rod, and the two ends of the return spring are respectively in contact with the stop sleeve and the buffer plate.

[0008] Further, the cylinder body of the stop telescopic cylinder is hinged to the stop bracket, and the limit guide plate is hinged to the output shaft of the stop telescopic cylinder.

[0009] Further, the lifting assembly includes a base, a fixed bracket, a driving cylinder, a transmission rotating shaft, a rotating rod, a main transmission rod, a sub-transmission rod, a safety protection plate, and a slide rail component. The fixed bracket is fixedly arranged on the base, the cylinder body of the driving cylinder is hinged to the upper side of the fixed bracket, the output shaft of the driving cylinder is hinged to one end of the rotating rod, the other end of the rotating rod is fixedly connected to one end of the transmission rotating shaft, the other end of the transmission rotating shaft is fixedly connected to one end of the main transmission rod, the other end of the main transmission rod is hinged to one end of the sub-transmission rod, the other end of the sub-transmission rod is hinged to the slide rail component, the slide rail component is arranged on the fixed bracket, the transmission rotating shaft is rotatably arranged on the fixed bracket and is arranged close to the base side, the plane where the rotating rod swings is parallel to the plane where the main transmission rod swings, the safety protection plate is fixedly arranged on the fixed bracket, and a support rod for lifting the vehicle body is arranged on the slide rail component.

[0010] Further, the slide rail component includes a slide rail and a slide plate. The slide plate is slidably arranged on two parallel slide rails, the middle part of the slide plate is hinged to the end of the sub-transmission rod, the slide rail is fixedly arranged on the fixed bracket, and the support rod is fixedly arranged on the slide plate.

[0011] Further, a limit rotating shaft parallel to the transmission rotating shaft is fixedly arranged on the driving cylinder. The two ends of the limit rotating shaft are respectively arranged on the fixed bracket through a first bearing seat, and the two ends of the transmission rotating shaft are respectively arranged on the fixed bracket through a second bearing seat.

[0012] Furthermore, reinforcing ribs are fixedly arranged on the transmission rotating shaft, and two ends of the reinforcing ribs are respectively fixedly connected with the rotating rod and the main transmission rod.

[0013] Furthermore, a limiting plate fixedly connected with the fixed bracket is fixedly arranged on the base. The limiting plate is arranged between the rotating rod and the main transmission rod, and an arc-shaped groove matched with the reinforcing rib is arranged on the limiting plate.

[0014] Furthermore, a limiting pin is arranged on the fixed bracket, and a jack matched with the limiting pin is arranged on the sliding plate.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1) In the present technology, after the vehicle body is transported to the corresponding position, the sliding bracket is stopped by the buffer stopping component, and then the sliding bracket is accurately positioned by the precise positioning component. Then, the vehicle body is directly jacked up by the lifting component for direct processing, so as to achieve the purpose of precise positioning and efficient processing.

[0017] 2) In the present technology, the driving cylinder drives the vehicle body on the production line to move through the transmission rotating shaft, the rotating rod, the main transmission rod, the auxiliary transmission rod and the slide rail component, etc., which can effectively reduce the working load of the driving cylinder and can stop at both the upper and lower positions. The safety protection plate is arranged to effectively prevent the operator from being injured during the work process.

[0018] 3) In the present technology, the limiting plate is arranged to effectively prevent the fixed bracket from being deformed during the work process.

[0019] 4) In the present technology, the limiting pin is arranged to effectively lock the sliding plate and prevent the sliding plate from sliding during the maintenance process. Description of the Drawings

[0020] Figure 1 is the three-dimensional connection structure of the system Figure 1 ;

[0021] Figure 2 is the three-dimensional connection structure of the system Figure 2 ;

[0022] Figure 3 is the three-dimensional connection structure diagram of the buffer stopping component;

[0023] Figure 4 is the three-dimensional connection structure diagram of the lifting component;

[0024] Figure 5 is the internal three-dimensional connection structure of the lifting component Figure 1 ;

[0025] Figure 6The internal three-dimensional connection structure of the lifting component Figure 2 ;

[0026] Figure 7 It is a connection structure diagram among the driving cylinder, the transmission rotating shaft, the rotating rod, the transmission rod and the auxiliary transmission rod;

[0027] In the figure, 1 - base, 2 - fixed bracket, 3 - driving cylinder, 4 - transmission rotating shaft, 5 - rotating rod, 6 - main transmission rod, 7 - auxiliary transmission rod, 8 - safety protection plate, 9 - slide rail, 10 - slide plate, 11 - limit rotating shaft, 12 - first bearing seat, 13 - reinforcing rib, 14 - second bearing seat, 15 - limit plate, 16 - limit pin, 17 - jack, 18 - transport bracket, 19 - sliding bracket, 20 - conveying drive motor, 21 - conveying rotating shaft, 22 - conveyor belt pulley, 23 - support wheel, 24 - limit disc, 25 - positioning telescopic cylinder, 26 - positioning rod, 27 - first positioning hole, 28 - second positioning hole, 29 - stopping telescopic cylinder, 30 - stopping bracket, 31 - limit guide wheel, 32 - limit guide plate, 33 - stopping sleeve, 34 - stopping moving rod, 35 - buffer plate, 36 - return spring, 37 - support rod. Specific implementation manners

[0028] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Refer to Figures 1 - 7 , the present invention provides a technical solution:

[0030] A roller bed type vehicle body transmission system includes a transport support 18, a sliding support 19, a conveying drive motor 20, a conveying rotating shaft 21, a conveyor belt pulley 22, a support wheel 23, a limit disc 24, a buffer stop assembly, a precise positioning assembly and a lifting assembly. A plurality of mutually parallel conveying rotating shafts 21 are rotatably arranged on the top of the transport support 18, and the axis lines of all the conveying rotating shafts 21 are in the same plane. Support wheels 23 cooperating with the sliding support 19 are coaxially fixed at both ends of each conveying rotating shaft 21. A limit disc 24 for preventing the sliding support 19 from sliding to both sides is coaxially fixed at the end of the support wheel 23. Conveyor belt pulleys 22 are coaxially fixed in the middle of each conveying rotating shaft 21. The conveyor belt pulleys 22 on two adjacent conveying rotating shafts 21 are connected by a first synchronous belt drive. The conveying drive motor 20 is fixed on the transport support 18 and is in transmission connection with the conveyor belt pulley 22 through a second synchronous belt. The buffer stop assembly is fixedly arranged on the transport support 18 and is used to limit the movement of the sliding support 19. The precise positioning assembly is fixedly arranged on the transport support 18 and cooperates with the sliding support 19. Lifting assemblies are arranged on both sides of the transport support 18, and the lifting assemblies are used to drive the vehicle body on the sliding support 19 to move upward. Among them, the transport support 18 is fixed on the ground. The conveying drive motor 20 drives the conveying rotating shaft 21 to rotate through the first synchronous belt and the second synchronous belt. The conveying rotating shaft 21 can only rotate and cannot slide to both ends. The conveying rotating shaft 21 drives the support wheel 23 to rotate, and the sliding support 19 is placed on the support wheel 23 to achieve the purpose of driving the sliding support 19 to move. The function of the limit disc 24 is to prevent the sliding support 19 from sliding to both sides during the movement. The two sides of the sliding support 19 are composed of two slide rails, and the limit disc 24 cooperates with the inner side of the slide rails. The function of the buffer stop assembly is to rise when the sliding support 19 needs to stop, prevent the sliding support 19 from moving forward, and then retract downward after the sliding support 19 stops. The precise positioning assembly facilitates the sliding support 19 to achieve precise positioning, and then the lifting assembly jacks up the vehicle body on the sliding support 19 and processes it. Two sets of lifting assemblies are arranged on each side of the transport support 18, and a total of four lifting assemblies are arranged to drive the vehicle body to move upward.

[0031] In some embodiments, the precise positioning assembly includes a positioning telescopic cylinder 25 and a positioning rod 26. The positioning telescopic cylinder 25 is vertically and fixedly arranged on the transport support 18. One end of the positioning rod 26 is coaxially arranged on the output shaft of the positioning telescopic cylinder 25, and a conical end is arranged at the other end of the positioning rod 26. A first positioning hole 27 cooperating with the positioning rod 26 is arranged on the transport support 18, and a second positioning hole 28 cooperating with the positioning rod 26 is arranged on the sliding support 19. Among them, the positioning telescopic cylinder 25 is a prior art. The positioning telescopic cylinder 25 drives the positioning rod 26 to move up and down, so that the sliding support 19 can achieve precise positioning.

[0032] In some embodiments, the buffer stop assembly includes a stop telescopic cylinder 29, a stop bracket 30, a limit guide wheel 31, a limit guide plate 32, a stop sleeve 33, a stop moving rod 34, a buffer plate 35 and a return spring 36. The stop bracket 30 is fixedly arranged on the transport bracket 18, the stop telescopic cylinder 29 is arranged on the stop bracket 30, the limit guide plate 32 is arranged on the output shaft of the stop telescopic cylinder 29. The opposite sides of the limit guide plate 32 are respectively matched with the limit guide wheels 31. The limit guide wheels 31 are rotatably arranged on the stop bracket 30, and the axis line of the limit guide wheels 31 is parallel to the axis line of the support wheel 23. The stop sleeve 33 is vertically and fixedly arranged on the limit guide plate 32. One end of the stop moving rod 34 is slidably arranged in the stop sleeve 33. A buffer plate 35 matched with the sliding bracket 19 is fixedly arranged at the other end of the stop moving rod 34. The return spring 36 is sleeved on the stop moving rod 34, and the two ends of the return spring 36 are respectively in contact with the stop sleeve 33 and the buffer plate 35. The cylinder body of the stop telescopic cylinder 29 is hinged on the stop bracket 30, and the limit guide plate 32 is hinged on the output shaft of the stop telescopic cylinder 29. Among them, the stop telescopic cylinder 29 is a prior art, and its function is to drive the limit guide plate 32 to move up and down. When it is necessary to stop the sliding bracket 19, the stop telescopic cylinder 29 drives the limit guide plate 32 to move up, and then the stop sleeve 33, the stop moving rod 34 and the buffer plate 35 act on the sliding bracket 19, so that the sliding bracket 19 stops moving on the transport bracket 18. The function of the return spring 36 is to reset the buffer plate 35. In actual use, the stop sleeve 33 is replaced by a hydraulic cylinder, and the transport bracket 18 stops moving through the hydraulic cylinder. The function of the stop bracket 30 is to install the stop telescopic cylinder 29 and the limit guide wheels 31. There are eight limit guide wheels 31 arranged on the stop bracket 30, and two limit guide wheels 31 are correspondingly arranged on each surface of the two sides of the limit guide plate 32, so as to position and guide the limit guide plate 32 and block the impact force of the transport bracket 18.

[0033] In some embodiments, the lifting assembly includes a base 1, a fixed bracket 2, a driving cylinder 3, a transmission rotating shaft 4, a rotating rod 5, a main transmission rod 6, a sub-transmission rod 7, a safety protection plate 8 and a slide rail component. The fixed bracket 2 is fixedly arranged on the base 1. The cylinder body of the driving cylinder 3 is hinged to the upper side of the fixed bracket 2. The output shaft of the driving cylinder 3 is hinged to one end of the rotating rod 5. The other end of the rotating rod 5 is fixedly connected to one end of the transmission rotating shaft 4. The other end of the transmission rotating shaft 4 is fixedly connected to one end of the main transmission rod 6. The other end of the main transmission rod 6 is hinged to one end of the sub-transmission rod 7. The other end of the sub-transmission rod 7 is hinged to the slide rail component. The slide rail component is arranged on the fixed bracket 2. The transmission rotating shaft 4 is rotatably arranged on the fixed bracket 2 and is arranged close to the base 1 side. The plane in which the rotating rod 5 swings is parallel to the plane in which the main transmission rod 6 swings. The safety protection plate 8 is fixedly arranged on the fixed bracket 2. A support rod 37 for lifting the vehicle body is arranged on the slide rail component. The driving cylinder 3 is a pneumatic cylinder or a hydraulic cylinder in the prior art. Among them, the base 1 is fixedly arranged on the ground, the fixed bracket 2 is fixedly arranged on the base 1, and the driving cylinder 3 is fixedly arranged on the fixed bracket 2. The telescopic movement of the piston rod drives the rotating rod 5 to swing around the transmission rotating shaft 4, so that the rotating rod 5 drives the transmission rotating shaft 4 to rotate. The transmission rotating shaft 4 drives the slide plate 10 to slide on the slide rail 9 through the main transmission rod 6 and the sub-transmission rod 7. The setting of the safety protection plate 8 makes the transmission rotating shaft 4, the rotating rod 5, the main transmission rod 6 and the sub-transmission rod 7 all inside the fixed bracket 2, which can not only protect the safety of the operator, but also prevent other objects from falling into the fixed bracket 2 and causing the work to be interrupted. Both ends of the sub-transmission rod 7 are arranged in a Y shape, and the swinging end of the rotating rod 5 is also arranged in a Y shape. The advantage of such a setting is that the rotating rod 5, the main transmission rod 6 and the sub-transmission rod 7 are evenly stressed during the working process.

[0034] In some embodiments, the slide rail component includes a slide rail 9 and a slide plate 10. The slide plate 10 is slidably arranged on two parallel slide rails 9. The middle part of the slide plate 10 is hinged to the end of the sub-transmission rod 7. The slide rail 9 is fixedly arranged on the fixed bracket 2. The slide rail 9 is perpendicular to the base 1. The support rod 37 is fixedly arranged on the slide plate 10. Among them, the two slide rails 9 are arranged vertically. The slide plate 10 moves up and down along the slide rail 9 under the action of the sub-transmission rod 7. The slide plate 10 drives the vehicle body to move up and down. The lower end of the support rod 37 is fixedly arranged on the slide plate 10, and the upper end of the support rod 37 cooperates with the vehicle body.

[0035] In some embodiments, a limit rotating shaft 11 parallel to the transmission rotating shaft 4 is fixedly arranged on the driving cylinder 3. Both ends of the limit rotating shaft 11 are respectively arranged on the fixed bracket 2 through the first bearing seats 12. Both ends of the transmission rotating shaft 4 are respectively arranged on the fixed bracket 2 through the second bearing seats 14. Among them, the purpose of setting the limit rotating shaft 11 is to install the driving cylinder 3. Through the two first bearing seats 12, it is easier for the driving cylinder 3 to rotate around the limit rotating shaft 11. It is also easier for the transmission rotating shaft 4 to rotate through the two second bearing seats 14.

[0036] In some embodiments, a reinforcing rib 13 is fixedly arranged on the transmission rotating shaft 4, and two ends of the reinforcing rib 13 are respectively fixedly connected to the rotating rod 5 and the main transmission rod 6. Among them, the purpose of arranging the reinforcing rib 13 is to better fix the rotating rod 5 and the main transmission rod 6 on the transmission rotating shaft 4.

[0037] In some embodiments, a limiting plate 15 fixedly connected to the fixed bracket 2 is fixedly arranged on the base 1. The limiting plate 15 is arranged between the rotating rod 5 and the main transmission rod 6, and an arc-shaped groove matched with the reinforcing rib 13 is arranged on the limiting plate 15. Among them, the purpose of arranging the limiting plate 15 is to prevent the fixed bracket 2 from deforming during operation. The limiting plate 15 is a reinforcing rib with internal connection.

[0038] In some embodiments, a limiting pin 16 is arranged on the fixed bracket 2, and a jack 17 matched with the limiting pin 16 is arranged on the sliding plate 10. Among them, the matching use of the limiting pin 16 and the jack 17 facilitates the maintenance of the device. During maintenance, the limiting pin 16 is inserted into the jack 17, so as to prevent the sliding plate 10 from sliding on the sliding rail 9. After maintenance, the limiting pin 16 is pulled out from the jack 17.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle part", "the other end", "upper", "one side", "inner", "front part", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection", "fixation", "hinge" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in the relevant field. As long as the changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, they should all be within the protection scope of the appended claims of the present invention.

Claims

1. A roller bed type vehicle body transmission system, characterized in that: It includes a transport support (18), a sliding support (19), a conveying drive motor (20), a conveying rotating shaft (21), a conveyor belt pulley (22), a support wheel (23), a limit disc (24), a buffer stop component, a precise positioning component and a lifting component. A plurality of mutually parallel conveying rotating shafts (21) are rotatably arranged on the top of the transport support (18). The axis lines of all the conveying rotating shafts (21) are in the same plane. At both ends of each conveying rotating shaft (21), a support wheel (23) cooperating with the sliding support (19) is fixedly coaxially arranged. At the end of the support wheel (23), a limit disc (24) for preventing the sliding support (19) from sliding to both sides is fixedly coaxially arranged. In the middle of each conveying rotating shaft (21), a conveyor belt pulley (22) is fixedly coaxially arranged. The conveyor belt pulleys (22) on two adjacent conveying rotating shafts (21) are connected by a first synchronous belt drive. The conveying drive motor (20) is fixed on the transport support (18) and is in transmission connection with the conveyor belt pulley (22) through a second synchronous belt. The buffer stop component is fixedly arranged on the transport support (18) and is used to limit the movement of the sliding support (19). The precise positioning component is fixedly arranged on the transport support (18) and cooperates with the sliding support (19). Lifting components are arranged on both sides of the transport support (18). The lifting components are used to drive the vehicle body on the sliding support (19) to move upward.

2. A roller bed type vehicle body transmission system according to claim 1, characterized in that: The precise positioning component includes a positioning telescopic cylinder (25) and a positioning rod (26). The positioning telescopic cylinder (25) is vertically and fixedly arranged on the transport support (18). One end of the positioning rod (26) is coaxially arranged on the output shaft of the positioning telescopic cylinder (25). A conical end is arranged at the other end of the positioning rod (26). A first positioning hole (27) cooperating with the positioning rod (26) is arranged on the transport support (18). A second positioning hole (28) cooperating with the positioning rod (26) is arranged on the sliding support (19).

3. A roller bed type vehicle body transmission system according to claim 1 or 2, characterized in that: The buffer stop component includes a stop telescopic cylinder (29), a stop bracket (30), a limit guide wheel (31), a limit guide plate (32), a stop sleeve (33), a stop moving rod (34), a buffer plate (35) and a return spring (36). The stop bracket (30) is fixedly arranged on the transport bracket (18). The stop telescopic cylinder (29) is arranged on the stop bracket (30). The limit guide plate (32) is arranged on the output shaft of the stop telescopic cylinder (29). The relative two sides of the limit guide plate (32) are respectively matched with the limit guide wheels (31). The limit guide wheels (31) are rotatably arranged on the stop bracket (30), and the axis line of the limit guide wheels (31) is parallel to the axis line of the support wheel (23). The stop sleeve (33) is vertically and fixedly arranged on the limit guide plate (32). One end of the stop moving rod (34) is slidably arranged in the stop sleeve (33). The other end of the stop moving rod (34) is fixedly provided with the buffer plate (35) which is matched with the sliding bracket (19). The return spring (36) is sleeved on the stop moving rod (34), and the two ends of the return spring (36) are respectively in contact with the stop sleeve (33) and the buffer plate (35).

4. A roller bed type vehicle body transmission system according to claim 3, characterized in that: The cylinder body of the stop telescopic cylinder (29) is hinged on the stop bracket (30), and the limit guide plate (32) is hinged on the output shaft of the stop telescopic cylinder (29).

5. A roller bed type vehicle body transmission system according to claim 1 or 2, characterized in that: The lifting component includes a base (1), a fixed bracket (2), a driving cylinder (3), a transmission rotating shaft (4), a rotating rod (5), a main transmission rod (6), a sub-transmission rod (7), a safety protection plate (8) and a slide rail component. The fixed bracket (2) is fixedly arranged on the base (1). The cylinder body of the driving cylinder (3) is hinged on the upper side of the fixed bracket (2). The output shaft of the driving cylinder (3) is hinged with one end of the rotating rod (5). The other end of the rotating rod (5) is fixedly connected with one end of the transmission rotating shaft (4). The other end of the transmission rotating shaft (4) is fixedly connected with one end of the main transmission rod (6). The other end of the main transmission rod (6) is hinged with one end of the sub-transmission rod (7). The other end of the sub-transmission rod (7) is hinged with the slide rail component. The slide rail component is arranged on the fixed bracket (2). The transmission rotating shaft (4) is rotatably arranged on the fixed bracket (2) and is arranged close to the base (1). The plane where the rotating rod (5) swings is parallel to the plane where the main transmission rod (6) swings. The safety protection plate (8) is fixedly arranged on the fixed bracket (2). A support rod (37) for lifting the vehicle body is arranged on the slide rail component.

6. A roller bed type vehicle body transmission system according to claim 5, characterized in that: The slide rail component includes a slide rail (9) and a slide plate (10). The slide plate (10) is slidably arranged on two mutually parallel slide rails (9). The middle part of the slide plate (10) is hinged to the end of the secondary transmission rod (7). The slide rail (9) is fixedly arranged on the fixed bracket (2), and the support rod (37) is fixedly arranged on the slide plate (10).

7. A roll bed type vehicle body transmission system according to claim 5, characterized in that: A limit rotating shaft (11) parallel to the transmission rotating shaft (4) is fixedly arranged on the driving cylinder (3). The two ends of the limit rotating shaft (11) are respectively arranged on the fixed bracket (2) through first bearing seats (12). The two ends of the transmission rotating shaft (4) are respectively arranged on the fixed bracket (2) through second bearing seats (14).

8. A roll bed type vehicle body transmission system according to claim 5, characterized in that: A reinforcing rib (13) is fixedly arranged on the transmission rotating shaft (4). The two ends of the reinforcing rib (13) are respectively fixedly connected to the rotating rod (5) and the main transmission rod (6).

9. A roll bed type vehicle body transmission system according to claim 8, characterized in that: A limit plate (15) fixedly connected to the fixed bracket (2) is fixedly arranged on the base (1). The limit plate (15) is arranged between the rotating rod (5) and the main transmission rod (6). An arc-shaped groove matched with the reinforcing rib (13) is arranged on the limit plate (15).

10. A roll bed type vehicle body transmission system according to claim 6, characterized in that: A limit pin (16) is arranged on the fixed bracket (2), and a jack (17) matched with the limit pin (16) is arranged on the slide plate (10).

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