Welding robot for semitrailer manufacturing

Abstract

The invention discloses a semitrailer manufacturing welding robot, and relates to the technical field of robots, the semitrailer manufacturing welding robot comprises a portal frame cross beam, a cantilever, a safety platform, a robot body and a supporting assembly, the supporting assembly is provided with a pressing assembly, and the pressing assembly is provided with a correcting assembly; a notch is formed in the corresponding welding side of the supporting assembly, a guide rod is longitudinally arranged on one side in the notch, a side gear plate is arranged on the side, away from the inner wall of the notch, of the guide rod, the guide rod is sleeved with a lifting cylinder, first side plates are arranged on the portions, located on the two sides of the side gear plate, of the side edge of the lifting cylinder, and a turbine meshed with the side gear plate is arranged between the first side plates. A worm meshed with the turbine is arranged above the turbine, a first motor is arranged on the side, away from the lifting cylinder, of the worm, a top plate is arranged above the first motor, and the top plate is connected with the first side plate; and the pressing assembly comprises a side extrusion plate, a connecting part is arranged on the inner side of the side extrusion plate, and the connecting part is installed on the side edge of the second side plate, so that the later correction requirement is reduced, follow-up frame assembling is facilitated, and the gap problem generated in the assembling process is reduced.

Description

Technical Field

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

[0002] The longitudinal beam of a semi-trailer is an important part of the semi-trailer frame, bearing various impact loads and complex torques during the driving process of the semi-trailer. The longitudinal beam is usually composed of two wing plates and one web plate. The web plate is vertically arranged between the two parallel upper and lower wing plates, and the connection between the web plate and the wing plate is connected by welding, so that an I-shaped part is formed after the longitudinal beam welding process is completed.

[0003] During the longitudinal beam welding operation process, usually a welding fixture is used to clamp and position the wing plate and the web plate, then manual spot welding is carried out at the connection of the wing plate and the web plate to complete the beam combination operation of the longitudinal beam, and finally the longitudinal beam is placed on the robot welding workbench for clamping, and the welding robot performs full welding operation on the connection of the wing plate and the web plate.

[0004] The existing longitudinal beam welding operation process has many steps. During spot welding and full welding, clamping is required, and the efficiency is low. At the same time, since spot welding is manually operated, the force of spot welding is greatly affected by human factors, which easily leads to uneven sizes of the welded spots after spot welding. During the full welding operation process, due to the too large size of the welded spots, the weld beads during the full welding process cannot cover the welded spots, resulting in poor welding quality and appearance defects. At the same time, during the spot welding process, displacement or warping and tipping over may occur due to external factors. Summary of the Invention

[0005] The technical task of the present invention is to provide a welding robot for manufacturing semi-trailers to solve the above problems in view of the above deficiencies.

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

[0007] A welding robot for manufacturing semi-trailers includes a gantry beam, a cantilever, a safety platform, a robot body, and a support assembly. A pressing assembly is provided on the support assembly, and a correction assembly is provided on the pressing assembly; a notch is provided on one side of the support assembly corresponding to the welding side. A guide rod longitudinally arranged is provided on one side inside the notch. A side gear plate is provided on the side of the guide rod away from the notch inner wall. A lifting cylinder is sleeved on the guide rod. On both sides of the side gear plate on the side of the lifting cylinder, there are side plates I. A turbine meshing with the side gear plate is provided between the side plates I. A worm gear meshing with the turbine is provided above the turbine. A motor I is provided on the side of the worm gear away from the lifting cylinder. A top plate is provided above the motor I, and the top plate is connected to the side plates I; the pressing assembly includes a side pressing plate. A connecting portion is provided inside the side pressing plate. The connecting portion is installed on the side of a side plate II. The side plate II is fixed to the bottom of the top plate on the side away from the motor I.

[0008] Preferably, a longitudinal opening is provided between the side plates I, the turbine penetrates through the longitudinal opening, an inner cylinder is provided near the center on the inner side of the side plates I, a rotating shaft is transversely arranged between the inner cylinders, and the rotating shaft penetrates through the turbine; a support plate I is provided at the top of the side plates I, the top of the support plate I is fixed at the corresponding side of the bottom of the top plate, a fixing block I is provided at the center of the inner side of the support plate I, a worm rod insertion cylinder is arranged between the inner sides of the fixing block I, a bottom opening is provided at the bottom of the worm rod insertion cylinder, and the worm rod penetrates through the bottom opening; a support column is provided at the center of the top of the motor I, and the top of the support column is fixed at the corresponding side of the bottom of the top plate.

[0009] Preferably, the connecting part includes a motor II, the motor II is fixed on the back side of one of the side plates II, the output end of the motor II is connected with a shaft, the shaft penetrates through the side plates II, a sleeve I is sleeved at one end of the shaft away from the motor II, a connecting rod I and a connecting rod II are connected to one side of the sleeve I, a sleeve II is provided at one end of the connecting rod II away from the sleeve I, a spring connecting part I is inserted through the middle of the sleeve II, a spring is provided on the spring connecting part I, the other end of the spring is provided with a spring connecting part II, and a fixing block II is provided at one end of the spring connecting part II corresponding to the side plates II, and the fixing block II is fixed at the corresponding end of the side of the side plates II; a sleeve III is provided at the other end of the connecting rod I, an inserting shaft is inserted through the middle of the sleeve III, a support plate I is provided at one end of the inserting shaft, the support plate I is fixed at one end of the side of the side extrusion plate, a support plate II is provided at the other end of the side of the side extrusion plate, and a limiting pulley is provided on the support plate II; a guiding sliding plate is provided on the shaft.

[0010] Preferably, the guiding sliding plate is fixed at the upper part of the side of the side plates II, the top surface of the guiding sliding plate is set as an inclined surface inclined towards the lower right corner; a slot through opening is provided at the lower part of the guiding sliding plate, and the shaft penetrates through the slot through opening.

[0011] Preferably, the correction assembly includes a mounting plate, the mounting plate is fixed on the side of the motor I, an L-shaped seat is provided on the side of the mounting plate away from the motor I, a driving part and a buffering part are provided on the L-shaped seat, and a correction pressing 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 air rod is arranged in the cylinder, the air rod penetrates through the cylinder, a disc is provided at one end of the air rod away from the cylinder, the side of the disc is fixed on the back side of the correction pressing plate, a gas communication pipe is connected to the side of the cylinder away from the air rod, and the other end of the gas communication pipe is connected to the buffering part.

[0013] Preferably, the buffer part includes a cylinder body. At the center of the inner top of the cylinder body, there is a cavity column. Inside the cavity column, there is an intermediate column. The intermediate column penetrates through the bottom of the cavity column and the cylinder body. At the bottom of the intermediate column, there is a second support plate. At the center of the bottom of the second support plate, there is a set of fixing plates. At the lower part between the fixing plates, a wheel connecting shaft is horizontally arranged. A correction wheel is sleeved on the wheel connecting shaft. Below the correction wheel, there is a V-shaped plate. The V-shaped plate is fixed at the center of the top of the cylinder. Inside the cylinder body, there is a spring tube. The end of the gas communication tube away from the cylinder is connected to the spring tube.

[0014] Preferably, the cylinder body is set to have an open-bottom structure. The top of the spring tube is fixed on the inner top wall of the cylinder body. The bottom of the spring tube penetrates through the cylinder body and is fixed on the top of the second support plate. 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 as follows:

[0016] 1. A support assembly is provided on the robot. A pressing assembly is provided on the support assembly. The side plate and the top plate of the semi-trailer are clamped and fixed through the support assembly and the pressing assembly, so as to prevent tipping during the welding operation. At the same time, the welding torch can synchronously weld the joint of the plate, avoiding the phenomenon that the size of the spot welds is uneven and pores are generated due to other factors affecting the spot welding force. Among them, a correction assembly is provided on the pressing assembly. Through the correction assembly, the warping of the wing plate can be monitored and corrected in real time during the welding process, reducing the need for later correction, facilitating the subsequent assembly of the vehicle frame, and reducing the gap problems generated during the assembly.

[0017] 2. The correction assembly 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 operation table. After being driven by the driving part, the correction pressing plate will be driven to press 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 technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

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

[0021] Figure 3Schematic diagram of the connection structure between the support component and the correction component according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the support component structure according to an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the connection structure between the lifting cylinder and the first side plate according to an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the guide rod structure according to an embodiment of the present invention;

[0025] Figure 7 Schematic diagram of the pressing component structure according to an embodiment of the present invention Figure 1 ;

[0026] Figure 8 Schematic diagram of the pressing component structure according to an embodiment of the present invention Figure 2 ;

[0027] Figure 9 Schematic diagram of the correction component structure according to an embodiment of the present invention Figure 1 ;

[0028] Figure 10 Schematic diagram of the correction component structure according to an embodiment of the present invention Figure 2 。

[0029] In the figure:

[0030] 1. Gantry beam; 2. Cantilever; 3. Safety platform; 4. Robot body; 5. Support component; 6. Pressing component; 7. Correction component; 8. Guide rod; 9. Side gear plate; 10. Lifting cylinder; 11. First side plate; 12. Turbine; 13. Worm; 14. First motor; 15. Top plate; 16. Side extrusion plate; 17. Second side plate; 18. Inner cylinder; 19. Rotating shaft; 20. First support plate; 21. First fixing block; 22. Worm penetration cylinder; 23. Support pillar; 24. Second motor; 25. Shaft; 26. First sleeve; 27. First connecting rod; 28. Second connecting rod; 29. Second sleeve; 30. First spring connecting piece; 31. Spring; 32. Second spring connecting piece; 33. Second fixing block; 34. Third sleeve; 35. First support plate; 36. Second support plate; 37. Limit pulley; 38. Guide sliding plate; 39. Mounting plate; 40. L-shaped seat; 41. Correction pressing plate; 42. Cylinder; 43. Air rod; 44. Disc; 45. Gas communication pipe; 46. Cylinder body; 47. Cavity column; 48. Intermediate column; 49. Second support plate; 50. Fixing plate; 51. Correction wheel; 52. V-shaped plate; 53. Spring tube. Detailed implementation manners

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

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

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

[0034] The present invention provides a semi-trailer manufacturing welding robot, including a gantry beam 1, a cantilever 2, a safety platform 3, a robot body 4, and a support assembly 5. A pressing assembly 6 is provided on the support assembly 5, and a correction assembly 7 is provided on the pressing assembly 6; a notch is provided on one side of the support assembly 5 corresponding to the welding side. A guide rod 8 is longitudinally arranged on one side inside the notch. A side gear plate 9 is provided on the side of the guide rod 8 away from the notch inner wall. A lifting cylinder 10 is sleeved on the guide rod 8. Side plates 11 are provided on both sides of the side gear plate 9 on the side of the lifting cylinder 10. A turbine 12 meshing with the side gear plate 9 is provided between the side plates 11. A worm 13 meshing with the turbine 12 is provided above the turbine 12. A motor 14 is provided on the side of the worm 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 plates 11; the pressing assembly 6 includes a side pressing plate 16. A connecting portion is provided inside the side pressing plate 16. The connecting portion is installed on the side of a side plate 17. The side plate 17 is fixed to the bottom of the top plate 15 on the side away from the motor 14. Pad plates are provided at the top and bottom of the guide rod 8, and the pad plates are respectively fixed to the top wall and bottom wall of the notch. A longitudinal guide groove can be provided on the side of the guide rod 8 away from the side gear plate 9. A locking rod can be inserted through the side of the lifting cylinder 10 away from the side plates 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, a longitudinal opening is provided between the side plates 11 where the lifting cylinder 10 is located. The turbine 12 penetrates through the longitudinal opening. An inner cylinder 18 is provided near the center on the inner side of the side plate 11. A rotating shaft 19 is horizontally arranged between the inner cylinders 18, and the rotating shaft 19 penetrates through the turbine 12. A support plate 20 is provided at the top of the side plate 11, and the top of the support plate 20 is fixed at the corresponding side at 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 worm rod insertion cylinder 22 is provided between the inner sides of the fixing block 21. The bottom of the worm rod insertion cylinder 22 is provided with a bottom opening, and the worm rod 13 penetrates through the bottom opening. A pillar 23 is provided at the center of the top of the motor 14, and the top of the pillar 23 is fixed at the corresponding side at the bottom of the top plate 15. The space formed between the right side of the lifting cylinder 10 and the two side plates 11 is communicated. When the upper worm rod 13 rotates, it will drive the lower meshing turbine 12 to rotate. Since the space between the side plates 11 and the inside of the lifting cylinder 10 is connected, the turbine 12 moves up and down along the side of the side gear plate 9 meshed on the side. Among them, the motor 14 is fixed on one side at the bottom of the top plate 15. Therefore, the side pressing plate 16 is located at the other position below the top plate.

[0036] In addition, the connecting part includes a motor 24. The motor 24 is fixed on the back side of the side plate 17. The output end of the motor 24 is connected with a shaft 25. The shaft 25 penetrates through the side plate 17. A sleeve 26 is sleeved at one end of the shaft 25 away from the motor 24. A connecting rod 27 and a connecting rod 28 are connected to the side of the sleeve 26. A sleeve 29 is provided at one end of the connecting rod 28 away from the sleeve 26. A spring connecting piece 30 is inserted through the middle of the sleeve 29. A spring 31 is provided on the spring connecting piece 30. The other end of the spring 31 is provided with a spring connecting piece 32. A fixing block 33 corresponding to the side plate 17 is provided at one end of the spring connecting piece 32, and the fixing block 33 is fixed at the corresponding end on the side of the side plate 17. A sleeve 34 is provided at the other end of the connecting rod 27. An inserting shaft is inserted through the middle of the sleeve 34. A supporting plate 35 is provided at one end of the inserting shaft, and the supporting plate 35 is fixed at the end of the side of the side pressing plate 16. A supporting plate 36 is provided at the other end of the side of the side pressing plate 16, and a limiting pulley 37 is provided on the supporting plate 36. A guiding sliding plate 38 is provided on the shaft 25, and the guiding sliding plate 38 is fixed at the upper part of the side of the side plate 17. The top surface of the guiding sliding plate 38 is set as an inclined surface sloping towards the lower right corner. A slot through opening is provided at the lower part of the guiding sliding plate 38, and the shaft 25 penetrates through the slot through opening. An inclined guiding sliding plate 38 is provided at the upper inner part of the side plate 17, and the guiding sliding plate 38 is set as an inclined inverted L-shaped structure. The limiting pulley 37 slides along the side of the guiding sliding plate 38, and the shaft 25 penetrates through the lower part of the guiding sliding plate 38. When the shaft 25 rotates, it will drive the sleeve 26 sleeved at the end, and the sleeve 26 will drive the connecting rod 27 and the connecting rod 28 connected to the side. A V-shaped angle is formed between the connecting rod 27 and the connecting rod 28.

[0037] In addition, the correction assembly 7 includes a mounting plate 39, which is fixed to the side of the first motor 14. On the side of the mounting plate 39 away from the first motor 14, there is an L-shaped seat 40. The L-shaped seat 40 is provided with a driving part and a buffering part. On the side of the driving part away from the side wall of the L-shaped seat 40, there is a correction pressing plate 41. The driving part includes a cylinder 42, and a matching air rod 43 is arranged in the cylinder 42. The air rod 43 penetrates through the cylinder 42. At the end of the air rod 43 away from the cylinder 42, there is a disc 44. The side of the disc 44 is fixed to the back side of the correction pressing plate 41. On the side of the cylinder 42 away from the air rod 43, there is a gas communication pipe 45, and the other end of the gas communication pipe 45 is connected to the buffering part. The buffering part includes a cylinder body 46. At the center of the inner top of the cylinder body 46, there is a cavity column 47. An intermediate column 48 is arranged in the cavity column 47. The intermediate column 48 penetrates through the bottom of the cavity column 47 and the cylinder body 46. At the bottom of the intermediate column 48, there is a second support plate 49. At the center of the bottom of the second support plate 49, there is a group of fixing plates 50. A wheel connecting shaft is horizontally arranged between the fixing plates 50. A correction wheel 51 is sleeved on the wheel connecting shaft. Below the correction wheel 51, there is a V-shaped plate 52, and the V-shaped plate 52 is fixed to the center of the top of the cylinder 42; there is a spring tube 53 in the cylinder body 46. The end of the gas communication pipe 45 away from the cylinder 42 is connected to the spring tube 53. The cylinder body 46 is arranged with an open bottom structure. The top of the spring tube 53 is fixed to the inner top wall of the cylinder body 46, and the bottom of the spring tube 53 penetrates through the cylinder body 46 and is fixed to 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. The top of the cavity column 47 is fixed to the inner top of the cylinder body 46, and the bottom of the intermediate column 48 is fixed to the top of the second support plate 49. The spring tube 53 is communicated with the gas communication pipe 45. When gas enters the gas communication pipe 45 and rushes into the spring tube 53, after the spring tube 53 is filled with gas, the spring tube 53 will expand. After the spring tube 53 expands, it will push against the cylinder body 46 and the second support plate 49, prompting the two to push open in two directions. When the correction wheel 51 is under pressure, it will be squeezed into the V-shaped groove of the V-shaped plate 52, and the correction effect is achieved through the generated V-shaped groove structure.

[0038] Among them, this welding is carried out by a gantry walking device, and the gantry device adopts the form of a directly mounted cross beam and an inverted robot, so that the effective welding range of the robot can be maximally utilized. At the same time, all the cables of the gantry device are inside the cable carrier and the column. The ground is laid with a foundation to ensure that the cables are not exposed, ensuring the service 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 the cleanliness of the customer's site ground. In addition, there is a safety platform on the cross beam of the gantry frame, which is convenient for equipment maintenance and wire replacement.

[0039] The detailed usage method and function of this embodiment:

[0040] When the robot body 4 is performing welding operations, the driving motor one 14 operates, and the motor one 14 drives the worm 13 to rotate. After the worm 13 rotates, it drives 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 teeth of the side gear plate 9, thereby driving the side plate one 11 and the lifting cylinder 10 to move up and down along the guide rod 8. With the lifting movement, the top plate 15 will press against one side of the semi-trailer top plate, pressing the top side of the semi-trailer top plate to keep the semi-trailer from warping due to other factors during welding. At the same time, the driving motor two 24 operates, and the motor two 24 drives the shaft 25 to rotate. After the shaft 25 rotates, it drives the sleeve one 26 sleeved at the end. When the sleeve one 26 rotates, it will pull the connecting rod one 27 and the connecting rod two 28 connected to the side. The connecting rod one 27 and the connecting rod two 28 will drive the sleeve two 29 and the sleeve three 34 connected to the other end. Since the sleeve three 34 is connected to the side extrusion plate 16, when the sleeve one 26 rotates, the connecting rod one 27 will pull the side extrusion plate 16 to achieve flipping. The limiting pulley 37 on the other side of the side of the side extrusion plate 16 will slide along the side of the guide slide plate 38. After the limiting pulley 37 slides to the top of the guide slide plate 38, the side extrusion plate 16 will flip to the lower side of the top plate 15. Conversely, the side extrusion plate 16 will flip to the right, causing the side extrusion plate 16 to stand perpendicular to the top plate 15 on one side. At this time, the side extrusion plate 16 can abut against the side plate of the semi-trailer to clamp the side plate. At this time, when the top plate 15 is subjected to a downward pressure or the side extrusion plate 16 is subjected to an external pressure, the top plate 15 will press the cylinder block 46 downward, and the cylinder block 46 will press the spring tube 53. Telescopic movement will occur between the cavity column 47 and the middle column 48. After the spring tube 53 is subjected to pressure, the gas flowing inside will be transmitted into the gas communication pipe 45. Among them, the spring tube 53 is made of rubber material. When the spring tube 53 is subjected to extrusion or stretching movement, the gas flowing inside will be subjected to pressure or stretching movement to increase the flow power. And the gas flowing in the gas communication pipe 45 and the spring tube 53 is pre-injected. Therefore, the gas flowing inside will be subjected to extrusion or stretching movement to increase the impact flow power. The spring tube 53 is set as an elastic structure, equivalent to the function of a return spring. When the support plate two 49 presses downward, it drives the correction wheel 51 at the bottom to be embedded in the V-groove of the V-shaped plate 52, providing a correction effect for the top plate 15. The disc 44 will abut against the correction abutting plate 41, causing the correction abutting plate 41 to abut against the side extrusion plate 16, providing an auxiliary supporting effect for the side extrusion plate 16 to maintain the angle of the side extrusion plate 16. In this way, the semi-trailer will not be displaced, warped or overturned due to external factors during welding, improving the welding operation.

[0041] Through the above specific implementation manners, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementation manners. Based on the disclosed implementation manners, those skilled in the art can arbitrarily combine different technical features to thus 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 the supporting component (5) corresponding to the welding side. A guiding rod (8) is longitudinally arranged on one side inside the notch. A side gear plate (9) is provided on the side of the guiding rod (8) away from the inner wall of the notch. A lifting cylinder (10) is sleeved on the guiding rod (8). Side plates one (11) are provided on both sides of the side gear plate (9) on the side of the lifting cylinder (10). A turbine (12) meshing with the side gear plate (9) is provided between the side plates one (11). A worm (13) meshing with the turbine (12) is provided above the turbine (12). A motor one (14) is provided on the side of the worm (13) away from the lifting cylinder (10). A top plate (15) is provided above the motor one (14). The top plate (15) is connected to the side plates one (11). The pressing component (6) includes a side pressing plate (16). A connecting part is provided inside the side pressing plate (16). The connecting part is installed on the side of a side plate two (17). The side plate two (17) is fixed on the bottom of the top plate (15) on the side away from the motor one (14).

2. The semi-trailer manufacturing welding robot according to claim 1, characterized in that, A longitudinal opening is provided between the side plates one (11) where the lifting cylinder (10) is located. The turbine (12) passes through the longitudinal opening. An inner cylinder (18) is provided near the center on the inner side of the side plates one (11). A rotating shaft (19) is horizontally arranged between the inner cylinders (18). The rotating shaft (19) passes through the turbine (12). A supporting plate one (20) is provided on the top of the side plates one (11). The top of the supporting plate one (20) is fixed at the corresponding side of the bottom of the top plate (15). A fixing block one (21) is provided at the center inside the supporting plate one (20). A worm inserting cylinder (22) is provided between the inner sides of the fixing block one (21). A bottom opening is provided at the bottom of the worm inserting cylinder (22). The worm (13) passes through the bottom opening. A pillar (23) is provided at the center of the top of the motor one (14). The top of the pillar (23) is fixed at 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 part includes a motor two (24). The motor two (24) is fixed on the back side of the side plate two (17). The output end of the motor two (24) is connected with a shaft (25). The shaft (25) passes through the side plate two (17). A sleeve one (26) is sleeved on the end of the shaft (25) away from the motor two (24). A connecting rod one (27) and a connecting rod two (28) are connected to the side of the sleeve one (26). A sleeve two (29) is provided at the end of the connecting rod two (28) away from the sleeve one (26). A spring connecting piece one (30) is horizontally arranged in the middle of the sleeve two (29). A spring (31) is provided on the spring connecting piece one (30). The other end of the spring (31) is provided with a spring connecting piece two (32). A fixing block two (33) is provided at the end of the spring connecting piece two (32) corresponding to the side plate two (17). The fixing block two (33) is fixed at the corresponding end on the side of the side plate two (17). At the other end of the first connecting rod (27), there is a third sleeve (34). An insertion shaft is inserted through the middle of the third sleeve (34). At one end of the insertion shaft, there is a first support plate (35), and the first support plate (35) is fixed at one end of the side of the side extrusion plate (16). At the other end of the side of the side extrusion plate (16), there is a second support plate (36), and a limiting pulley (37) is arranged on the second support plate (36); A guiding sliding plate (38) is arranged on the shaft (25).

4. A semi-trailer manufacturing welding robot according to claim 3, characterized in that, The guiding sliding plate (38) is fixed at the upper part of the side of the second side plate (17). The top surface of the guiding sliding plate (38) is set as an inclined surface that slopes towards the lower right corner; A clamping groove through opening is arranged at the lower part of the guiding sliding plate (38), and the shaft (25) passes through the clamping groove through opening.

5. A semi-trailer manufacturing welding robot according to claim 1, characterized in that, The correction assembly (7) includes a mounting plate (39). The mounting plate (39) is fixed at the side of the first motor (14). On the side of the mounting plate (39) away from the first motor (14), there is an L-shaped seat (40). A driving part and a buffer part are arranged on the L-shaped seat (40). A correction pressing plate (41) is arranged on the side of the driving part away from the side wall of the L-shaped seat (40).

6. The semi-trailer manufacturing welding robot according to claim 5, wherein, The driving part includes a cylinder (42). A matching air rod (43) is arranged in the cylinder (42). The air rod (43) passes through the cylinder (42). At one end of the air rod (43) away from the cylinder (42), there is a disc (44). The side of the disc (44) is fixed on the back side of the correction pressing plate (41). A gas connecting pipe (45) is connected to the side of the cylinder (42) away from the air rod (43), and the other end of the gas connecting pipe (45) is connected to the buffer part.

7. A semi-trailer manufacturing welding robot according to claim 6, characterized in that, The buffer part includes a cylinder body (46). At the center of the inner top of the cylinder body (46), there is a cavity column (47). An intermediate column (48) is arranged in the cavity column (47). The intermediate column (48) passes through the bottom of the cavity column (47) and the cylinder body (46). At the bottom of the intermediate column (48), there is a second support plate (49). At the center of the bottom of the second support plate (49), there is a group of fixing plates (50). A wheel connecting shaft is horizontally arranged at the lower part between the fixing plates (50). A correction wheel (51) is sleeved on the wheel connecting shaft. Below the correction wheel (51), there is a V-shaped plate (52), and the V-shaped plate (52) is fixed at the center of the top of the cylinder (42); A spring tube (53) is arranged in the cylinder body (46). The end of the gas connecting pipe (45) away from the cylinder (42) is connected to the spring tube (53).

8. A semi-trailer manufacturing welding robot according to claim 7, characterized in that, The cylinder body (46) is set as a structure with an open bottom. The top of the spring tube (53) is fixed on the inner 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).

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