A welding robot for semi-trailer manufacturing

Abstract

The present invention discloses a semi-trailer manufacturing welding robot, which relates to the technical field of robots and includes a gantry crossbeam, a cantilever, a safety platform, a robot body and a support assembly, wherein a clamping assembly is provided on the support assembly, and a correction assembly is provided on the clamping assembly; a notch is provided on one side of the support assembly corresponding to the welding, a guide rod is longitudinally arranged on one side of the notch, a side gear plate is provided on the side of the guide rod away from the inner wall of the notch, a lifting cylinder is sleeved on the guide rod, and side plates are provided on both sides of the lifting cylinder at the side of the side gear plate, a turbine meshed with the side gear plate is provided between the side plates, a vortex rod meshed with the side gear plate is provided above the turbine, a motor is provided on the side of the vortex rod away from the lifting cylinder, a top plate is provided above the motor, and the top plate is connected to the side plate one; the clamping assembly includes a side extrusion plate, a connecting part is provided on the inner side of the side extrusion plate, and the connecting part is installed on the side edge of the side plate two, which reduces the need for later correction, helps the assembly of the subsequent vehicle frame, and reduces the gap problem generated during assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of robots, in particular to a welding robot for manufacturing semi-trailers. Background Art

[0002] A semitrailer's longitudinal beam is a crucial component of the vehicle's frame, bearing the various impact loads and complex moments during driving. The longitudinal beam typically consists of two flanges and a web. The web is vertically positioned between two parallel flanges. The web and flange are welded together, forming an I-shaped longitudinal beam.

[0003] During the longitudinal beam welding process, welding fixtures are usually used to clamp and position the flange and web plates. Then, spot welding is performed manually at the connection between the flange and web plates to complete the longitudinal beam joining operation. Finally, the longitudinal beam is placed on the robot welding workbench for clamping, and the welding robot is used to fully weld the connection between the flange and web plates.

[0004] The existing technology has many steps in the longitudinal beam welding process. Clamping is required during spot welding and full welding, which is inefficient. At the same time, since spot welding is a manual operation, the strength of spot welding is greatly affected by human factors, which can easily lead to uneven weld sizes after spot welding. During the full welding process, the weld spots in the full welding process cannot cover the welds due to the welds being too large, resulting in poor welding quality and appearance defects. At the same time, during the spot welding process, displacement or warping and rollover may be caused by external factors. Summary of the Invention

[0005] The technical task of the present invention is to provide a semi-trailer manufacturing welding robot to solve the above problems.

[0006] The technical solution of the present invention is achieved as follows:

[0007] A semi-trailer manufacturing welding robot comprises a gantry beam, a cantilever, a safety platform, a robot body and a support assembly, wherein a clamping assembly is provided on the support assembly, and a correction assembly is provided on the clamping assembly; a notch is provided on the supporting assembly corresponding to the welding side, a guide rod is longitudinally arranged on one side of the notch, a side gear plate is provided on the guide rod away from the inner wall of the notch, a lifting cylinder is sleeved on the guide rod, side plates 1 are provided on both sides of the lifting cylinder on the side of the side gear plate, a turbine meshed with the side gear plate is provided between the side plates 1, a vortex rod meshed with the side gear plate is provided above the turbine, a motor 1 is provided on the side of the vortex rod away from the lifting cylinder, a top plate is provided above the motor 1, and the top plate is connected to the side plate 1; the clamping assembly comprises a side extrusion plate, a connecting part is provided on the inner side of the side extrusion plate, the connecting part is mounted on the side of the side plate 2, and the side plate 2 is fixed to the bottom of the top plate on the side away from the motor 1.

[0008] Preferably, the lifting cylinder is provided with a longitudinal opening between the side panels, the turbine passes through the longitudinal opening, an inner cylinder is provided near the center of the inner side of the side panel, a rotating shaft is provided across the inner cylinders, and the rotating shaft passes through the turbine; a support plate is provided on the top of the side panel, the top of the support plate is fixed to the corresponding side of the bottom of the top panel, a fixing block is provided at the center of the inner side of the support plate, a vortex rod interlaced cylinder is provided between the inner sides of the fixing block, the bottom of the vortex rod interlaced cylinder is provided with a bottom opening, and the vortex rod passes through the bottom opening; a pillar is provided at the top center of the motor, and the top of the pillar is fixed to the corresponding side of the bottom of the top panel.

[0009] Preferably, the connecting part includes motor 2, which is fixed on one side of the back side of side plate 2, and the output end of motor 2 is connected with a shaft, which passes through side plate 2, and the end of the shaft away from motor 2 is provided with sleeve 1, and one side of the sleeve is connected to connecting rod 1 and connecting rod 2, and the end of connecting rod 2 away from sleeve 1 is provided with sleeve 2, and a spring connector 1 is inserted through the middle of sleeve 2, and a spring is provided on the spring connector 1, and a spring connector 2 is provided at the other end of the spring, and a fixing block 2 is provided at one end of the spring connector corresponding to side plate 2, and the fixing block 2 is fixed on the corresponding end of the side edge of side plate 2; a sleeve 3 is provided at the other end of connecting rod 1, and an insertion shaft is inserted through the middle of sleeve 3, and a support plate 1 is provided at one end of the insertion shaft, and the support plate 1 is fixed at one end of the side edge of the side extrusion plate, and a support plate 2 is provided at the other end of the side edge of the side extrusion plate, and a limiting pulley is provided on the support plate 2; a guide slide is provided on the shaft.

[0010] Preferably, the guide slide is fixed at the upper side of the side panel 2, and the top surface of the guide slide is set as an inclined surface inclined toward the lower right corner; the lower part of the guide slide is provided with a slot opening, and the shaft passes through the slot opening.

[0011] Preferably, the correction assembly includes a mounting plate, which is fixed to the side of motor one. An L-shaped seat is provided on the side of the mounting plate away from motor one, and a driving part and a buffer part are provided on the L-shaped seat. A correction pressure plate is provided on the side of the driving part away from the side wall of the L-shaped seat.

[0012] Preferably, the driving part includes a cylinder, a matching gas rod is provided in the cylinder, the gas rod passes through the cylinder, a disc is provided at the end of the gas rod away from the cylinder, the side of the disc is fixed on the back side of the correction pressure plate, and a gas connecting pipe is connected to the side of the cylinder away from the gas rod, and the other end of the gas connecting pipe is connected to the buffer part.

[0013] Preferably, the buffer portion includes a cylinder body, a cavity column is provided at the top center of the cylinder body, an intermediate column is provided in the cavity column, the intermediate column runs through the bottom of the cavity column and the cylinder body, a support plate 2 is provided at the bottom of the intermediate column, a group of fixed plates are provided at the bottom center of the support plate 2, a wheel connecting shaft is provided horizontally at the lower part between the fixed plates, a correction wheel is provided on the wheel connecting shaft, a V-shaped plate is provided below the correction wheel, and the V-shaped plate is fixed at the top center of the cylinder; a spring tube is provided in the cylinder body, and the gas connecting tube is connected to the spring tube at one end away from the cylinder.

[0014] Preferably, the cylinder body is configured as an open structure at the bottom, the top of the spring tube is fixed on the top wall of the cylinder body, and the bottom of the spring tube passes through the cylinder body and is fixed on the top of the support plate 2; the cavity column and the intermediate column are located in the middle of the spring tube.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. A support assembly is set on the robot, and a clamping assembly is provided on the support assembly. The side panels and top panels of the semi-trailer are clamped and fixed by the support assembly and the clamping assembly to prevent them from tipping over during the welding operation. At the same time, the welding gun can perform synchronous welding on the joints of the plates to avoid the spot welding force being affected by other factors, resulting in uneven weld sizes and air holes after spot welding. Among them, a correction assembly is provided on the clamping assembly. The correction assembly can monitor and correct the warping of the wing panel in real time during the welding process, reducing the need for later correction, facilitating the subsequent assembly of the frame, and reducing gap problems caused during assembly.

[0017] 2. The correction component includes a driving part and a buffer part. The buffer part is mainly used to reduce the vibration force generated during the welding operation and maintain the stability of the entire operating table. After the driving part is driven, it will drive the correction pressure plate to squeeze it, forming a correction effect and improving the accuracy of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a robot body according to an embodiment of the present invention;

[0021] Figure 3is a schematic diagram of the connection structure between the support assembly and the correction assembly according to an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a support assembly according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the connection structure between the lifting cylinder and the side panel 1 according to an embodiment of the present invention;

[0024] Figure 6 is a schematic structural diagram of a guide rod according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the compression assembly according to an embodiment of the present invention. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the structure of the compression assembly according to an embodiment of the present invention. Figure 2 ;

[0027] Figure 9 This is a schematic diagram of the structure of the correction component according to an embodiment of the present invention. Figure 1 ;

[0028] Figure 10 This is a schematic diagram of the structure of the correction component according to an embodiment of the present invention. Figure 2 .

[0029] In the picture:

[0030] 1. Gantry beam; 2. Cantilever; 3. Safety platform; 4. Robot body; 5. Support assembly; 6. Clamping assembly; 7. Correction assembly; 8. Guide rod; 9. Side gear plate; 10. Lifting cylinder; 11. Side plate 1; 12. Turbine; 13. Turbine rod; 14. Motor 1; 15. Top plate; 16. Side extrusion plate; 17. Side plate 2; 18. Inner cylinder; 19. Rotating shaft; 20. Support plate 1; 21. Fixed block 1; 22. Turbine rod insertion cylinder; 23. Pillar; 24. Motor 2; 25. Shaft; 26. Sleeve 1; 27. Connecting rod 1; 28. Connecting rod 2; 29. ​​Sleeve 2; 30. Spring connector 1; 31. Spring; 32. Spring connector 2; 33. Fixed block 2; 34. Sleeve 3; 35. Support plate 1; 36. Support plate 2; 37. Limit pulley; 38. Guide slide; 39. Mounting plate; 40. L-shaped seat; 41. Correction pressure plate; 42. Cylinder; 43. Gas rod; 44. Disc; 45. Gas connecting pipe; 46. Cylinder body; 47. Cavity column; 48. Intermediate column; 49. Support plate 2; 50. Fixed plate; 51. Correction wheel; 52. V-shaped plate; 53. Spring tube. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] According to an embodiment of the present invention, Figures 1-10 Shown in:

[0034] The present invention provides a semi-trailer manufacturing welding robot, comprising a gantry crossbeam 1, a cantilever 2, a safety platform 3, a robot body 4 and a support assembly 5, wherein a clamping assembly 6 is provided on the support assembly 5, and a correction assembly 7 is provided on the clamping assembly 6; the support assembly 5 is provided with a notch on one side corresponding to the welding, a guide rod 8 is longitudinally arranged on one side of the notch, a side gear plate 9 is provided on the side of the guide rod 8 away from the inner wall of the notch, a lifting cylinder 10 is sleeved on the guide rod 8, and a side plate 11 is provided on both sides of the lifting cylinder 10 on both sides of the side gear plate 9, a turbine 12 meshed with the side gear plate 9 is provided between the side plates 11, a vortex rod 13 meshed with the turbine 12 is provided above the turbine 12, a motor 14 is provided on the side of the vortex rod 13 away from the lifting cylinder 10, a top plate 15 is provided above the motor 14, and a top plate 15 is provided on the top of the top plate 15. The plate 15 is connected to the side plate 11; the clamping assembly 6 includes a side extrusion plate 16, and a connecting portion is provided on the inner side of the side extrusion plate 16, and the connecting portion is installed on the side of the side plate 2 17. The side plate 2 17 is fixed to the bottom of the top plate 15 on the side away from the motor 14. The top and bottom of the guide rod 8 are provided with pads, and the pads are respectively fixed on the top wall and bottom wall of the slot. A longitudinal guide groove can be provided on the side of the guide rod 8 away from the side gear plate 9, and a locking rod can be inserted on the side of the lifting cylinder 10 away from the side plate 11. The inner end of the locking rod can be embedded in the guide groove and slide in the guide groove. When the locking rod is tightened, the inner end of the locking rod will be limited and locked in the guide groove. In this way, the lifting cylinder 10 can be limited and locked, providing a certain limiting effect on the lifting cylinder 10.

[0035] Among them, the lifting cylinder 10 is provided with a longitudinal opening between the side plates 11, the turbine 12 passes through the longitudinal opening, the inner side of the side plate 11 is provided with an inner cylinder 18 near the center, the inner cylinder 18 is provided with a rotating shaft 19 running across, and the rotating shaft 19 passes through the turbine 12; the top of the side plate 11 is provided with a support plate 20, the top of the support plate 20 is fixed to the corresponding side of the bottom of the top plate 15, a fixing block 21 is provided at the center of the inner side of the support plate 20, a vortex rod interpenetrating cylinder 22 is provided between the inner sides of the fixing block 21, the bottom of the vortex rod interpenetrating cylinder 22 is provided with a bottom opening, and the vortex rod 13 passes through the bottom opening. A pillar 23 is provided at the top center of the motor 14, and the top of the pillar 23 is fixed to the side corresponding to the bottom of the top plate 15. The right side of the lifting cylinder 10 is connected to the space formed between the two side plates 11. When the upper worm rod 13 rotates, it will drive the meshing turbine 12 below to rotate. Since the side plates 11 are connected to the inside of the lifting cylinder 10, the turbine 12 is prompted to rise and fall on the side of the side gear plate 9 that is meshed on the side. Among them, the motor 14 is fixed to the bottom side of the top plate 15. Therefore, the side extrusion plate 16 is located on the other side below the top plate.

[0036] In addition, the connecting part includes a motor 24, which is fixed on one side of the back of the side plate 217, and the output end of the motor 24 is connected to a shaft 25, which passes through the side plate 217, and the end of the shaft 25 away from the motor 24 is provided with a sleeve 1 26, and the side of the sleeve 1 26 is connected to a connecting rod 1 27 and a connecting rod 2 28, and the end of the connecting rod 28 away from the sleeve 1 26 is provided with a sleeve 29, and a spring connector 1 30 is inserted through the middle of the sleeve 29, and a spring 31 is provided on the spring connector 1 30, and a spring connector 2 32 is provided at the other end of the spring 31, and a fixing block 2 33 is provided at one end of the spring connector 2 32 corresponding to the side plate 217, and the fixing block 2 33 is fixed on the corresponding end of the side of the side plate 217; a sleeve 34 is provided at the other end of the connecting rod 27, and an insertion shaft is inserted through the middle of the sleeve 34, and a support plate 35 is provided at one end of the insertion shaft, and the support plate 35 is fixed to the side extrusion plate At one end of the side of 16, a support plate 26 is provided at the other end of one side of the side extrusion plate 16, and a limiting pulley 37 is provided on the support plate 26; a guide slide 38 is provided on the shaft 25, and the guide slide 38 is fixed at the upper part of the side edge of the side plate 2 17, and the top surface of the guide slide 38 is set as an inclined surface inclined to the lower right corner; a slot opening is provided at the lower part of the guide slide 38, and the shaft 25 passes through the slot opening, and a guide slide 38 inclined to the lower right corner is provided at the upper inner side of the side plate 2 17. The guide slide 38 is set as an inclined inverted L-shaped structure, and the limiting pulley 37 slides along the side of the guide slide 38, and the shaft 25 passes through the lower part of the guide slide 38. When the shaft 25 rotates, it will drive the sleeve 1 26 set at the end, and the sleeve 1 26 will drive the connecting rod 1 27 and the connecting rod 2 28 connected to the side, forming a V-shaped angle between the connecting rod 1 27 and the connecting rod 2 28.

[0037] In addition, the correction component 7 includes a mounting plate 39, which is fixed to the side of the motor 14. The mounting plate 39 is provided with an L-shaped seat 40 on the side away from the motor 14. The L-shaped seat 40 is provided with a driving portion and a buffer portion. The driving portion is provided with a correction pressure plate 41 on the side away from the side wall of the L-shaped seat 40. The driving portion includes a cylinder 42, and a matching gas rod 43 is provided in the cylinder 42. The gas rod 43 runs through the cylinder 42, and a disc 44 is provided at one end of the gas rod 43 away from the cylinder 42. The side of the disc 44 is fixed to the back of the correction pressure plate 41. On the other side, the cylinder 42 is connected to a gas connecting pipe 45 on the side away from the gas rod 43. The other end of the gas connecting pipe 45 is connected to the buffer part. The buffer part includes a cylinder body 46. A cavity column 47 is provided at the top center of the cylinder body 46. An intermediate column 48 is provided in the cavity column 47. The intermediate column 48 runs through the bottom of the cavity column 47 and the cylinder body 46. A support plate 49 is provided at the bottom of the intermediate column 48. A group of fixing plates 50 are provided at the center of the bottom of the support plate 49. A wheel connecting shaft is provided across the lower part between the fixing plates 50. A correction wheel is provided on the wheel connecting shaft. 51, a V-shaped plate 52 is provided below the correction wheel 51, and the V-shaped plate 52 is fixed at the top center of the cylinder 42; a spring tube 53 is provided in the cylinder body 46, and the gas connecting tube 45 is connected to the spring tube 53 at one end away from the cylinder 42. The cylinder body 46 is set to have an open bottom structure, and the top of the spring tube 53 is fixed on the top wall of the cylinder body 46. The bottom of the spring tube 53 passes through the cylinder body 46 and is fixed on the top of the support plate 49; the cavity column 47 and the intermediate column 48 are located in the middle of the spring tube 53, and the top of the cavity column 47 is fixed on the cylinder body 46. On the top of the cylinder body 46, the bottom of the middle column 48 is fixed on the top of the support plate 2 49. The spring tube 53 is connected to the gas connecting tube 45. When the gas enters the gas connecting tube 45 and rushes into the spring tube 53, the spring tube 53 will expand after the gas rushes into the spring tube 53. After the expansion, the spring tube 53 pushes against the cylinder body 46 and the support plate 2 49, causing the two to push apart in two directions. When the correction wheel 51 is subjected to pressure, it will be squeezed into the V-groove of the V-shaped plate 52, and the correction effect is achieved through the generated V-groove structure.

[0038] Among them, the welding is carried out using a gantry walking equipment, and the gantry equipment adopts the form of upright installation of the crossbeam and the robot upside down, so that the effective welding range of the robot can be used to the greatest extent. At the same time, all cables of the gantry equipment are in the drag chain and the column, and the foundation is laid on the ground to ensure that the cables are not exposed, ensuring the life of the equipment cables and the aesthetics of the equipment. In addition, the control cabinet and power supply components on the equipment move with the robot, which can better meet the welding effect while ensuring that the customer's site floor is clean and tidy. In addition, a safety platform is provided on the gantry beam to facilitate equipment maintenance and replacement of welding wire.

[0039] Detailed usage and effects of this embodiment:

[0040] When the robot body 4 is performing welding operations, the drive motor 14 is running, and the motor 14 drives the worm gear 13 to rotate. After the worm gear 13 rotates, it will drive the meshing turbine 12 below, causing the turbine 12 to rotate. Among them, the side gear plate 9 is fixed to the side of the guide rod 8 and is in a stationary state. When the turbine 12 rotates, it will roll along the side gear teeth of the side gear plate 9, thereby carrying the side plate 11 and the lifting cylinder 10 to rise and fall on the guide rod 8. As the lifting movement occurs, the top plate 15 will press the semi-trailer roof plate on one side, suppressing the top side of the semi-trailer roof plate, so as to prevent the semi-trailer from warping due to other factors during welding. At the same time, the driving motor 24 is running, and the motor 24 drives the shaft 25 to rotate. After the shaft 25 rotates, it will drive the sleeve 1 26 set on the end. When the sleeve 1 26 rotates, it will pull the connecting rod 1 27 and the connecting rod 2 28 connected to the side. The connecting rod 1 27 and the connecting rod 2 28 will drive the sleeve 2 29 and the sleeve 3 34 connected at the other end. Since the sleeve 3 34 is connected to the side extrusion plate 16, when the sleeve 1 26 rotates, the connecting rod 1 27 will pull the side extrusion plate 16 to realize the flipping. When the side extrusion plate 16 is turned, the limiting pulley 37 on the other side of the side extrusion plate 16 will slide along the side of the guide slide 38. After the limiting pulley 37 slides to the top of the guide slide 38, the side extrusion plate 16 will flip to the side below the top plate 15. Conversely, the side extrusion plate 16 will flip to the right, causing the side extrusion plate 16 to stand on one side perpendicular to the top plate 15. At this time, the side extrusion plate 16 can be against the side plate of the semi-trailer to clamp the side plate. At this time, the top plate 15 is subjected to downward pressure or the side extrusion plate 16 is subjected to external pressure. Under the action of force, the top plate 15 will press the cylinder 46 downward, and the cylinder 46 will press the spring tube 53, and a telescopic movement will be generated between the cavity column 47 and the middle column 48. When the spring tube 53 is under pressure, the gas flowing inside will be transmitted to the inside of the gas connecting tube 45. Among them, the spring tube 53 is made of rubber material. When the spring tube 53 is squeezed or stretched, the gas flowing inside will be subjected to pressure or stretching to increase the flow power, and the gas flowing in the gas connecting tube 45 and the spring tube 53 is pre- The gas flowing inside is injected first, so it will be squeezed or stretched to increase the impact flow force during the movement. The spring tube 53 is set as an elastic structure, which is equivalent to the function of a return spring. When the support plate 49 is pressed down, the correction wheel 51 at the bottom is embedded in the V groove of the V-shaped plate 52, which has a correction effect on the top plate 15. The disc 44 will press against the correction pressure plate 41, so that the correction pressure plate 41 presses against the side extrusion plate 16, providing auxiliary support for the side extrusion plate 16 and maintaining the angle of the side extrusion plate 16. In this way, the semi-trailer will not be displaced or warped and overturned by external factors during welding, thereby improving the welding operation.

[0041] The above specific embodiments will allow those skilled in the art to easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A semi-trailer manufacturing welding robot, comprising a gantry beam (1), a cantilever (2), a safety platform (3), a robot body (4) and a support assembly (5), characterized in that: A pressing component (6) is provided on the supporting component (5), and a correcting component (7) is provided on the pressing component (6); A notch is provided on one side of the support assembly (5) corresponding to the welding, a guide rod (8) is longitudinally provided on one side of the notch, a side gear plate (9) is provided on the side of the guide rod (8) away from the inner wall of the notch, a lifting cylinder (10) is sleeved on the guide rod (8), and a side plate (11) is provided on both sides of the lifting cylinder (10) located on the side of the side gear plate (9), a turbine (12) meshing with the side gear plate (9) is provided between the side plates (11), a vortex rod (13) meshing with the turbine (12) is provided above the turbine (12), a motor (14) is provided on the side of the vortex rod (13) away from the lifting cylinder (10), a top plate (15) is provided above the motor (14), and the top plate (15) is connected to the side plate (11); The pressing assembly (6) includes a side extrusion plate (16), the inner side of the side extrusion plate (16) is provided with a connecting portion, the connecting portion is installed on the side of the side plate 2 (17), the side plate 2 (17) is fixed to the bottom of the top plate (15) away from the side of the motor 1 (14); the correction assembly (7) includes a mounting plate (39), the mounting plate (39) is fixed to the side of the motor 1 (14), the side of the mounting plate (39) away from the motor 1 (14) is provided with an L-shaped seat (40), the L-shaped seat (40) is provided with a driving portion and a buffer portion, the driving portion is away from the L-shaped A correction pressure plate (41) is provided on one side of the side wall of the seat (40), and the driving part includes a cylinder (42), a matching gas rod (43) is provided in the cylinder (42), the gas rod (43) passes through the cylinder (42), and a disc (44) is provided on one end of the gas rod (43) away from the cylinder (42), and the side of the disc (44) is fixed on the back side of the correction pressure plate (41), and a gas connecting pipe (45) is connected to the side of the cylinder (42) away from the gas rod (43), and the other end of the gas connecting pipe (45) is connected to the buffer part, and the buffer part includes a cylinder body (46), a cavity column (47) is provided at the center of the top of the cylinder body (46), an intermediate column (48) is provided in the cavity column (47), the intermediate column (48) runs through the bottom of the cavity column (47) and the cylinder body (46), a support plate 2 (49) is provided at the bottom of the intermediate column (48), a set of fixed plates (50) is provided at the center of the bottom of the support plate 2 (49), a wheel connecting shaft is provided at the lower part between the fixed plates (50), a correction wheel (51) is provided on the wheel connecting shaft, and a V-shaped plate (52) is provided below the correction wheel (51) , a V-shaped plate (52) is fixed at the top center of the cylinder (42); a spring tube (53) is provided in the cylinder body (46), and the gas connecting tube (45) is connected to the spring tube (53) at one end away from the cylinder (42). The cylinder body (46) is set to have an open bottom structure, the top of the spring tube (53) is fixed on the top wall of the cylinder body (46), and the bottom of the spring tube (53) passes through the cylinder body (46) and is fixed on the top of the second support plate (49); the cavity column (47) and the intermediate column (48) are located in the middle of the spring tube (53).

2. A semi-trailer manufacturing welding robot according to claim 1, characterized in that: The lifting cylinder (10) is provided with a longitudinal opening between the side plates (11), and the turbine (12) passes through the longitudinal opening. An inner cylinder (18) is provided near the center of the inner side of the side plate (11), and a rotating shaft (19) is provided transversely between the inner cylinders (18), and the rotating shaft (19) passes through the turbine (12); A support plate (20) is provided on the top of the side plate (11), the top of the support plate (20) is fixed to the side edge corresponding to the bottom of the top plate (15), a fixing block (21) is provided at the inner center of the support plate (20), a vortex rod insertion tube (22) is provided between the inner sides of the fixing block (21), a bottom opening is provided at the bottom of the vortex rod insertion tube (22), and the vortex rod (13) passes through the bottom opening; A support (23) is provided at the top center of the motor 1 (14), and the top of the support (23) is fixed to the corresponding side of the bottom of the top plate (15).

3. A semi-trailer manufacturing welding robot according to claim 1, characterized in that: The connecting portion includes a second motor (24), which is fixed on one side of the back of the second side plate (17), and an output end of the second motor (24) is connected to a shaft (25), which passes through the second side plate (17), and an end of the second shaft (25) away from the second motor (24) is provided with a sleeve (26), and a side of the sleeve (26) is connected to a connecting rod (27) and a second connecting rod (28), and an end of the second connecting rod (28) away from the sleeve (26) is provided with a sleeve (29), and a spring connector (30) is inserted in the middle of the sleeve (29), and a spring (31) is provided on the spring connector (30), and a spring connector (32) is provided at the other end of the spring (31), and a fixing block (33) is provided at one end of the spring connector (32) corresponding to the second side plate (17), and the fixing block (33) is fixed to the corresponding end of the side of the second side plate (17); The other end of the connecting rod (27) is provided with a sleeve (34), the middle of the sleeve (34) is provided with an insertion shaft, one end of the insertion shaft is provided with a support plate (35), the support plate (35) is fixed at the end of one side of the side extrusion plate (16), the other end of one side of the side extrusion plate (16) is provided with a support plate (36), and the support plate (36) is provided with a limiting pulley (37); A guide slide plate (38) is provided on the shaft (25).

4. A semi-trailer manufacturing welding robot according to claim 3, characterized in that: The guide slide plate (38) is fixed to the upper side of the side plate 2 (17), and the top surface of the guide slide plate (38) is set as an inclined surface inclined toward the lower right corner; A slot opening is provided at the lower portion of the guide slide plate (38), and the shaft (25) passes through the slot opening.

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