Automatic arc welding equipment for tank end cover of tank truck

Abstract

This application relates to the field of welding technology, and particularly to an automatic arc welding device for the end cover of a tank body for a tanker truck. It includes a mounting suction cup, a lifting sleeve is threadedly connected to the upper end of the mounting suction cup, a welding machine main body is fixedly connected to the upper end of the lifting sleeve, a support frame is fixedly connected to the surface of the welding machine main body, a traveling motor is fixedly connected to the lower end of the support frame, a traveling gear is fixedly connected to the output end of the traveling motor, and a rotating frame is engaged with the outer surface of the traveling gear. This application can make the welding torch move along the welding seam by setting a traveling track rod. By setting two sets of sliding seats and connecting them with a connecting rod, the arc welding corner position will be more stable. By setting an extension column, the welding torch can always fit the traveling track rod during the movement process, so that the welding torch can move along the weld seam, achieving the effect of smooth sliding welding along the weld seam, and solving the problem that the movement is not smooth during the welding along the three-dimensional arc, resulting in intermittence or too long staying time during welding.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular, to an automatic arc welding device for the end cover of a tank body for a tanker truck. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasonic waves. In addition to being used in factories, welding can also be carried out in a variety of environments, such as in the wild, underwater, and in space. Wherever it is carried out, welding may pose risks to operators, so appropriate protective measures must be taken during welding. The injuries that welding may cause to the human body include burns, electric shock, vision damage, inhalation of toxic gases, excessive ultraviolet radiation, etc.

[0003] Through retrieval, Chinese Patent Publication No. CN107953007A discloses that an arc welding device includes a fixed fixture for clamping a workpiece to be welded, as well as a soldering rotation device and a solder wire feeding device mounted on a mounting bracket. The soldering rotation device includes a first motor, a first cylinder and a soldering iron that are drivingly connected to the first motor. The first cylinder is drivingly connected to the soldering iron. The first motor is installed directly above the fixed fixture, and the axis of its output shaft is on the same straight line as the axis of the workpiece to be welded. The solder wire feeding device is installed on one side of the first motor, and the solder wire led out therefrom obliquely points to the workpiece to be welded. The soldering iron is obliquely installed on the first motor such that the heating end of the soldering iron obliquely points to the workpiece to be welded. A heating inclined surface facing the solder wire feeding device is provided on the side wall of the heating end, and the heating inclined surface is inclined downward relative to the axis of the soldering iron.

[0004] Through retrieval, Chinese Patent Publication No. CN221313009U discloses an automatic arc welding type welding machine including a welding torch. The welding torch is fixed on the piston rod of a single-rod electric cylinder. The cylinder body of the single-rod electric cylinder is fixed on the output shaft of a rotating motor. Two rotating motors are both installed on a gear opening and closing mechanism. The gear opening and closing mechanism is connected to a lifting mechanism. A product clamping and fixing mechanism is provided below the welding torch. The product clamping and fixing mechanism is connected to a product rotating mechanism. The product rotating mechanism is installed on a horizontal linear movement mechanism. A CCD camera is installed on the lifting mechanism. This utility model uses the gear opening and closing mechanism to cooperate with two single-rod electric cylinders and two rotating motors to drive two welding torches to align with the welding points of the product. The product rotating mechanism is used to drive the product to rotate, thereby realizing the welding of the entire circumference of the arc-shaped product.

[0005] Regarding the above related technologies, it is considered that the following defects exist:

[0006] 1. When the existing device welds a three-dimensional arc such as a welded tank body in space and cannot follow the weld seam, the device will cause problems such as welding interruption or too long residence time during welding, so the coherence of the arc in the three-dimensional space cannot be guaranteed.

[0007] 2. When welding the arc of a cylindrical surface such as a tank body, it cannot move smoothly along the weld seam, and the welding torch cannot always be closely attached to the weld seam. Therefore, when facing the welding of the tank body arc, there will be insufficient welding and the welding quality of the weld seam cannot be guaranteed.

[0008] 3. When the welding device welds on the outer surface of the tank body, since the tank body has a cylindrical surface, it is not easy to position the device, and the device is easy to slide on the surface and the welding position cannot be determined. Summary of the Invention

[0009] In order to solve the problems mentioned in the background art, the present application provides an automatic arc welding device for the end cover of a tank body of a tank truck.

[0010] An automatic arc welding device for the end cover of a tank body of a tank truck provided by the present application adopts the following technical solutions: It includes a mounting suction cup. A lifting sleeve is threadedly connected to the upper end of the mounting suction cup. A welding machine main body is fixedly connected to the upper end of the lifting sleeve. A support frame is fixedly connected to the surface of the welding machine main body. A traveling motor is fixedly connected to the lower end of the support frame. A traveling gear is fixedly connected to the output end of the traveling motor. A rotating frame is meshed with the outer surface of the traveling gear. A track ring is rotatably connected to the lower end of the rotating frame. A positioning shell is slidably clamped on the surface of the track ring. The positioning shell is clamped with the rotating frame. A mounting plate is fixedly connected to the lower end of the track ring. The upper end of the mounting plate is fixedly connected to the support frame. An extension column is fixedly connected to the lower end of the positioning shell. A placement frame is fixedly connected to the lower end of the extension column. A balance frame is fixedly connected to the lower end of the placement frame. A solder feeding motor is fixedly connected to the inner side of the placement frame. A pushing shaft is fixedly connected to the output end of the solder feeding motor. A guiding and correcting hopper is fixedly connected to the surface of the placement frame. A solder placement rack is rotatably connected to the inner side of the placement frame. A feed compensation motor is fixedly connected to the inner side of the balance frame. A docking gear is fixedly connected to the output end of the feed compensation motor. A pushing shaft is fixedly connected to the lower end of the docking gear. A welding torch is clamped on the surface of the pushing shaft. A connection buckle is arranged on the surface of the welding torch. A traveling track rod is connected to the upper surface of the mounting plate by screws. A sliding seat is slidably connected to the surface of the traveling track rod. A connecting rod is inlaid in the inner side of the sliding seat. The surface of the connecting rod is rotatably connected to the balance frame.

[0011] Optionally, the rotating frame is composed of a welding traveling ring and a welding pushing frame. The welding traveling ring has a circular ring shape. There is a notch at the lower end of the welding traveling ring. The notch of the welding traveling ring is clamped on the outside of the positioning shell. A welding pushing frame is fixedly connected to the inner side of the welding traveling ring. Teeth are arranged on the inner side of the welding pushing frame and are meshed with the traveling gear.

[0012] Optionally, the erection plate includes a vertical plate and a cross plate, the lower surface of the cross plate is provided with an anti-slip rubber strip, the cross plate is placed above the tank body, the upper end of the cross plate is fixedly connected to the vertical plate, and the upper end of the vertical plate is fixedly connected to the track ring.

[0013] Optionally, the extension column consists of an outer sleeve, an extension spring and an extension tube. The upper end of the outer sleeve is fixedly connected to the positioning shell, the inner side of the outer sleeve is fixedly connected to the extension spring, the lower end of the extension spring is fixedly connected to the extension tube, and the outer surface of the extension tube is slidably connected to the inner wall of the outer sleeve.

[0014] Optionally, there are two groups of pusher shafts, the upper ends of the pusher shafts are spur gears, the spur gears of the two groups of pusher shafts are meshed with each other, and the lower ends of the pusher shafts are round shafts, which have the function of clamping and pushing the solder.

[0015] Optionally, there are four pushing shafts in total, and each pair of pushing shafts is clamped on both sides of the welding gun in a group, and two groups of connecting buckles are provided on the surface of the welding gun, and the connecting buckles have the function of guiding the solder.

[0016] Optionally, the guiding and correcting bucket has a trumpet-shaped appearance, and the guiding and correcting bucket has the function of collecting and guiding the solder.

[0017] Optionally, the connecting rod is composed of a support rod, a connecting belt and a rotating disk. The middle end of the support rod is a round rod, and both ends of the support rod are spherical. Both ends of the support rod are embedded in the sliding seat. Both ends of the support rod are fixedly connected with a connecting belt. One end of the connecting belt is a traction rope and the other end is a disc. The connecting belt passes through the sliding seat, and a rotating disk is provided in the middle section of the connecting rod, which is rotatably connected to the balance frame.

[0018] Optionally, the traveling track rod is a predetermined welding route, the traveling track rod is bent along the welding position, and a base is provided at the lower end of the traveling track rod to be connected with the cross plate.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] 1. The automatic arc welding equipment for the tank end cover of the tank truck enables the welding gun to move along the welding gap by setting a traveling track rod, and by setting two sets of sliding seats and connecting them with connecting rods, the arc welding corner position will be more stable, and by setting an extension column, the welding gun can always fit the traveling track rod during the movement, so that the welding gun can move along the weld, achieving the effect of fitting the weld for smooth sliding welding, and solving the problem of intermittent movement or too long dwell time during welding due to insufficient smoothness during welding along a three-dimensional arc.

[0021] 2. The automatic arc welding equipment for the end cover of the tank body of the tanker drives the docking gear to rotate through the feed compensation motor, rotates the pushing shaft to clamp the welding torch, makes the welding torch approach the weld seam, drives the pushing shaft to rotate through the solder feed motor, makes the pushing shaft clamp and push the solder strip clamped on the surface of the solder placement rack, makes the solder pass through the guiding and correcting hopper for correction, makes the solder penetrate through two groups of connecting buckles, enables the solder to be pushed and supplemented in time, drives the traveling gear to rotate through the traveling motor, makes the traveling gear rotate the welding pushing frame, makes the welding pushing frame push the welding traveling ring, makes the welding traveling ring push the positioning shell to slide and rotate on the surface of the track ring, drives the extension column through the positioning shell, makes the extension column drive the placement frame and the balance frame to move, makes the sliding seat slide on the surface of the traveling track rod, enables the welding torch to contact the weld seam during rotation for welding, achieves the effect of pushing the welding torch and the solder to fit the weld seam for welding, and solves the problem that the welding torch and the weld seam cannot always be closely fitted, resulting in false welding.

[0022] 3. The automatic arc welding equipment for the end cover of the tank body of the tanker, by erecting the erection plate on the surface of the tank body of the tanker, placing the cross plate on the surface of the tank body and setting anti-slip rubber strips on the lower surface of the cross plate, makes the erection plate placed more firmly, rotates the erection suction cup to rotate and extend it inside the lifting sleeve, and makes the erection suction cup adhere above the weld joint through the erection suction cup, so that the device is fixed on the surface of the tank body, achieves the effect of erecting the device and fixing the welding position, and solves the problem that it is easy to slide and the welding position cannot be determined when welding on the outer surface of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the schematic diagram of the overall structure in the embodiment of the present application;

[0024] Figure 2 is the schematic diagram of the structure of the erection plate in the embodiment of the present application;

[0025] Figure 3 is the schematic diagram of the structure of the traveling track rod in the embodiment of the present application;

[0026] Figure 4 is the schematic diagram of the structure of the welding torch in the embodiment of the present application;

[0027] Figure 5 is the schematic diagram of the structure of the sliding seat in the embodiment of the present application;

[0028] Figure 6 is the schematic diagram of the structure of the extension column in the embodiment of the present application;

[0029] Figure 7 is the schematic diagram of the structure of the track ring in the embodiment of the present application;

[0030] Figure 8 is the schematic diagram of the structure of the traveling gear in the embodiment of the present application.

[0031] Reference numerals: 1, erection suction cup; 2, lifting sleeve; 3, welding machine main body; 4, support frame; 5, traveling motor; 6, traveling gear; 7, rotating frame; 71, welding traveling ring; 72, welding push frame; 8, track ring; 9, positioning shell; 10, erection plate; 101, vertical plate; 102, cross plate; 11, extension column; 111, outer sleeve; 112, extension spring; 113, extension pipe; 12, placement frame; 13, balance frame; 14, solder feeding motor; 15, pushing shaft; 16, guiding and correcting hopper; 17, solder placement rack; 18, feed compensation motor; 19, docking gear; 20, pushing shaft; 21, welding torch; 22, connecting buckle; 23, traveling track rod; 24, sliding seat; 25, connecting rod; 251, support rod; 252, connecting belt; 253, rotating disk. Detailed implementation mode

[0032] The following will further elaborate on this application in conjunction with the attached Figure 1-8 drawings.

[0033] The embodiment of this application discloses an automatic arc welding device for the end cover of a tank truck body. As Figure 1-8 shown, it includes an erection suction cup 1. The upper end of the erection suction cup 1 is threadedly connected with a lifting sleeve 2. The erection suction cup 1 can be attached above the welding position to fix the device on the surface of the tank body, so that it will not move during the welding process. The upper end of the lifting sleeve 2 is fixedly connected with a welding machine main body 3. The surface of the welding machine main body 3 is fixedly connected with a support frame 4. The lower end of the support frame 4 is fixedly connected with a traveling motor 5. The output end of the traveling motor 5 is fixedly connected with a traveling gear 6. The outer surface of the traveling gear 6 is meshed with a rotating frame 7. The lower end of the rotating frame 7 is rotatably connected with a track ring 8. The surface of the track ring 8 is slidably clamped with a positioning shell 9. The rotating frame 7 is composed of a welding traveling ring 71 and a welding push frame 72. The outer shape of the welding traveling ring 71 is a ring. There is a notch at the lower end of the welding traveling ring 71. The notch of the welding traveling ring 71 is clamped outside the positioning shell 9. The inner side of the welding traveling ring 71 is fixedly connected with a welding push frame 72. There are teeth on the inner side of the welding push frame 72 and it is meshed with the traveling gear 6. The rotating frame 7 can be pushed and rotated by the traveling gear 6, so that the positioning shell 9 can be pushed by the welding traveling ring 71 to move along the track ring 8.

[0034] The positioning shell 9 is clamped with the rotating frame 7. The lower end of the track ring 8 is fixedly connected with an erection plate 10. The upper end of the erection plate 10 is fixedly connected with the support frame 4. The erection plate 10 includes a vertical plate 101 and a cross plate 102. There is an anti-slip rubber strip on the lower surface of the cross plate 102. The cross plate 102 is placed above the tank body. The upper end of the cross plate 102 is fixedly connected with a vertical plate 101. The upper end of the vertical plate 101 is fixedly connected with the track ring 8. The erection plate 10 facilitates the erection and fixation of the welding device on the surface of the tank body.

[0035] The lower end of the positioning shell 9 is fixedly connected with an extension column 11. The lower end of the extension column 11 is fixedly connected with a placement frame 12. The lower end of the placement frame 12 is fixedly connected with a balance frame 13. Inside the placement frame 12, a solder feeding motor 14 is fixedly connected. The output end of the solder feeding motor 14 is fixedly connected with a pushing shaft 15. There are two groups of pushing shafts 15. The upper end of the pushing shaft 15 is a spur gear, and the spur gears of the two groups of pushing shafts 15 are meshed with each other. The lower end of the pushing shaft 15 is a round shaft. The round shaft of the pushing shaft 15 has the function of clamping and pushing the solder. The pushing shaft 15 can rotate to push the solder in time for replenishment, so that the welding can be carried out continuously.

[0036] On the surface of the placement frame 12, a guiding and correcting hopper 16 is fixedly connected. Inside the placement frame 12, a solder placement rack 17 is rotatably connected. Inside the balance frame 13, a feeding compensation motor 18 is fixedly connected. The output end of the feeding compensation motor 18 is fixedly connected with a docking gear 19. The lower end of the docking gear 19 is fixedly connected with a pushing shaft 20. A welding torch 21 is clamped on the surface of the pushing shaft 20. The guiding and correcting hopper 16 is in a horn shape. The guiding and correcting hopper 16 has the function of collecting and guiding the solder. The guiding and correcting hopper 16 can correct the solder so that the solder can be close to the welding torch 21.

[0037] There are four pushing shafts 20 in total. Every two pushing shafts 20 are in a group and are clamped on both sides of the welding torch 21. Two groups of connection buckles 22 are arranged on the surface of the welding torch 21. The connection buckles 22 have the function of guiding the solder. The pushing shaft 20 can push the welding torch 21 to move, so that the welding torch 21 can make position compensation in time and get close to the weld seam.

[0038] Two groups of connection buckles 22 are arranged on the surface of the welding torch 21. The extension column 11 is composed of an outer sleeve 111, an extension spring 112 and an extension tube 113. The upper end of the outer sleeve 111 is fixedly connected with the positioning shell 9. The extension spring 112 is fixedly connected inside the outer sleeve 111. The lower end of the extension spring 112 is fixedly connected with the extension tube 113. The outer surface of the extension tube 113 is slidably connected with the inner wall of the outer sleeve 111. The extension column 11 can press and push the placement frame 12 to make the welding torch 21 fit the weld seam.

[0039] On the upper surface of the erection plate 10, a traveling track rod 23 is connected by screws. The traveling track rod 23 is both a predetermined welding route. The traveling track rod 23 is bent along the welding position. The lower end of the traveling track rod 23 is provided with a base connected to the cross plate 102. The traveling track rod 23 can make the welding torch 21 move forward along the weld seam during movement, and can ensure the accuracy of the welding position.

[0040] A sliding seat 24 is slidably connected to the surface of the traveling track rod 23. A connecting rod 25 is embedded inside the sliding seat 24. The connecting rod 25 is composed of a support rod 251, a connecting belt 252, and a rotating disk 253. The middle end of the support rod 251 is a round rod, and both ends of the support rod 251 are spherical. Both ends of the support rod 251 are fitted with the sliding seat 24. Connecting belts 252 are fixedly connected to both ends of the support rod 251. One end of the connecting belt 252 is a traction rope and the other end is a disk. The connecting belt 252 passes through the sliding seat 24. A rotating disk 253 is provided in the middle section of the connecting rod 25. The rotating disk 253 is rotatably connected to the balance frame 13. The connecting rod 25 can be connected between two groups of sliding seats 24, so that when the sliding seat 24 moves on the surface of the traveling track rod 23, the pushing of the balance frame 13 can be made more stable. The surface of the connecting rod 25 is rotatably connected to the balance frame 13.

[0041] The implementation principle of the automatic arc welding equipment for the tank body end cover of a tank truck in an embodiment of the present application is as follows: When in use, first, the erection plate 10 is erected on the surface of the tank body of the tank truck. It is placed on the surface of the tank body through the cross plate 102. The erection suction cup 1 is rotated and extended inside the lifting sleeve 2, and the device is fixed on the surface of the tank body by attaching the erection suction cup 1 above the weld. The traveling track rod 23 adapted to the weld is installed. When welding is required, the welding machine main body 3 is started to make the welding torch 21 work. The docking gear 19 is rotated by starting the feed compensation motor 18, so that the pushing shaft 20 rotates to clamp the welding torch 21, and the welding torch 21 is brought close to the weld. The solder feed motor 14 is started to drive the pushing shaft 15 to rotate, so that the pushing shaft 15 clamps and pushes the solder strip clamped on the surface of the solder placement rack 17, so that the solder passes through the guiding and correcting hopper 16 for correction, and the solder penetrates through the two connecting buckles 22, so that the solder can be pushed in time for replenishment. The traveling motor 5 is started to drive the traveling gear 6 to rotate, so that the traveling gear 6 rotates the welding pushing frame 72, so that the welding pushing frame 72 pushes the welding traveling ring 71 to rotate, so that the welding traveling ring 71 pushes the positioning shell 9 to slide and rotate on the track ring 8. The extension column 11 is driven by the positioning shell 9, so that the extension column 11 drives the placement frame 12 and the balance frame 13 to move, so that the sliding seat 24 slides on the surface of the traveling track rod 23. When the two sliding seats 24 move, the connecting rod 25 is used to maintain stability, so that the balance frame 13 moves smoothly, so that the welding torch 21 can contact the weld during rotation for welding. During the movement, the extension column 11 is extended in a timely manner so that the welding torch 21 can always fit the weld.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic arc welding device for the end cover of a tank body of a tank truck, including a mounting suction cup (1), characterized in that: The upper end of the erection suction cup (1) is threadedly connected with a lifting sleeve (2). The upper end of the lifting sleeve (2) is fixedly connected with a welding machine main body (3). The surface of the welding machine main body (3) is fixedly connected with a support frame (4). The lower end of the support frame (4) is fixedly connected with a traveling motor (5). The output end of the traveling motor (5) is fixedly connected with a traveling gear (6). The outer surface of the traveling gear (6) is meshed with a rotating frame (7). The lower end of the rotating frame (7) is rotatably connected with an orbital ring (8). The surface of the orbital ring (8) is slidably clamped with a positioning shell (9). The positioning shell (9) is clamped with the rotating frame (7). The lower end of the orbital ring (8) is fixedly connected with an erection plate (10). The upper end of the erection plate (10) is fixedly connected with the support frame (4). The lower end of the positioning shell (9) is fixedly connected with an extension column (11). The lower end of the extension column (11) is fixedly connected with a placement frame (12). The lower end of the placement frame (12) is fixedly connected with a balance frame (13). The inner side of the placement frame (12) is fixedly connected with a solder feeding motor (14). The output end of the solder feeding motor (14) is fixedly connected with a pushing shaft (15). The surface of the placement frame (12) is fixedly connected with a guiding and correcting hopper (16). The inner side of the placement frame (12) rotatably connects a solder placement rack (17). The inner side of the balance frame (13) is fixedly connected with a feeding compensation motor (18). The output end of the feeding compensation motor (18) is fixedly connected with a docking gear (19). The lower end of the docking gear (19) is fixedly connected with a pushing shaft (20). The surface of the pushing shaft (20) clamps a welding torch (21). A connection buckle (22) is arranged on the surface of the welding torch (21); The upper surface of the erection plate (10) is connected with a traveling track rod (23) by screws. The surface of the traveling track rod (23) slidably connects a sliding seat (24). A connecting rod (25) is embedded in the inner side of the sliding seat (24). The surface of the connecting rod (25) is rotatably connected with the balance frame (13).

2. The automatic arc welding equipment for the tank end cover of a tank truck according to claim 1, characterized in that: The rotating frame (7) is composed of a welding traveling ring (71) and a welding pushing frame (72). The shape of the welding traveling ring (71) is a ring. There is a notch at the lower end of the welding traveling ring (71). The notch of the welding traveling ring (71) is clamped on the outer side of the positioning shell (9). The inner side of the welding traveling ring (71) is fixedly connected with a welding pushing frame (72). The inner side of the welding pushing frame (72) is provided with teeth and meshes with the traveling gear (6).

3. An automatic arc welding device for the tank end cover of a tanker truck according to claim 1, characterized in that: The erection plate (10) includes a vertical plate (101) and a cross plate (102). The lower surface of the cross plate (102) is provided with an anti-slip rubber strip. The cross plate (102) is placed above the tank body. The upper end of the cross plate (102) is fixedly connected with the vertical plate (101). The upper end of the vertical plate (101) is fixedly connected with the orbital ring (8).

4. An automatic arc welding device for the tank end cover of a tanker truck according to claim 1, characterized in that: The extension column (11) is composed of an outer sleeve (111), an extension spring (112) and an extension tube (113). The upper end of the outer sleeve (111) is fixedly connected with the positioning shell (9). The inner side of the outer sleeve (111) is fixedly connected with an extension spring (112). The lower end of the extension spring (112) is fixedly connected with an extension tube (113). The outer surface of the extension tube (113) slidably connects with the inner wall of the outer sleeve (111).

5. An automatic arc welding device for the tank end cover of a tanker truck according to claim 1, characterized in that: There are two sets of the pushing shafts (15). The upper ends of the pushing shafts (15) are spur gears, and the spur gears of the two sets of pushing shafts (15) mesh with each other. The lower ends of the pushing shafts (15) are round shafts, and the round shafts of the pushing shafts (15) have the function of clamping and pushing the solder.

6. The automatic arc welding equipment for the tank end cover of a tanker truck according to claim 1, characterized in that: There are four pushing shafts (20) in total. Every two pushing shafts (20) form a group and are clamped on both sides of the soldering gun (21). There are two sets of connecting buckles (22) arranged on the surface of the soldering gun (21), and the connecting buckles (22) have the function of guiding the solder.

7. An automatic arc welding device for the tank end cover of a tanker truck according to claim 1, characterized in that: The guiding and correcting hopper (16) is in a horn shape, and the guiding and correcting hopper (16) has the function of collecting and guiding the solder.

8. An automatic arc welding device for the tank end cover of a tanker truck according to claim 1, characterized in that: The connecting rod (25) is composed of a support rod (251), a connecting belt (252) and a rotating disk (253). The middle part of the support rod (251) is a round rod, and both ends of the support rod (251) are spherical. Both ends of the support rod (251) are fitted with the sliding seats (24). Connecting belts (252) are fixedly connected to both ends of the support rod (251). One end of the connecting belt (252) is a traction rope and the other end is a disk. The connecting belt (252) passes through the sliding seat (24). A rotating disk (253) is arranged in the middle section of the connecting rod (25), and the rotating disk (253) is rotatably connected to the balance frame (13).

9. The automatic arc welding equipment for the tank body end cover of a tank truck according to claim 3, characterized in that: The traveling track rod (23) is the predetermined welding route. The traveling track rod (23) is bent along the welding position. A base is arranged at the lower end of the traveling track rod (23) and is connected to the cross plate (102).

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