Welding device for butt joint in steel structure machining

Abstract

The invention discloses a welding device for steel structure machining butt joint, and relates to the technical field of welding, the welding device comprises a fixed base, supporting plates are symmetrically installed on the top face of the fixed base, supporting plates are arranged on the inner sides of the two ends of the supporting plates, clamping and positioning mechanisms are installed on the supporting plates on the two sides, a lifting seat is arranged on the outer ring of a transmission screw in a sleeving mode, and the lifting seat is provided with a clamping groove. An electric push rod is installed at the front end of the lifting base, and a welding head is fixedly installed at the front end of the electric push rod. According to the steel structural part welding device, the clamping and positioning mechanism is arranged, two sections of steel structural parts can be stably clamped, the clamped steel structural parts are in butt joint, a welding head can be driven to ascend, descend and move in cooperation with rotation of a transmission screw and stretching and retracting of an electric push rod, and therefore the steel structural parts can be effectively welded conveniently; and meanwhile, in the lifting process of the welding head, the chip removing and cooling mechanism can be driven to conduct chip removing before welding and cooling after welding.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a welding device for butt welding of steel structures. Background Technology

[0002] In many fields such as architecture and bridges today, steel structures have become a widely used building structure system due to their high strength, light weight, excellent overall stiffness, and outstanding deformation capacity. In the construction of steel structures, welding, as a key process, plays a crucial role in connecting steel components, and welding equipment for steel structure butt joints is the core equipment for achieving this connection.

[0003] However, existing welding equipment for steel structure processing and connection still has certain defects in use; A steel structure welding device for easy docking, as proposed in application number CN202411454047.5, includes a support base, a support rod and a support plate respectively connected to the support base. The support rod clamps a first steel structure through a first clamping assembly, and the support plate clamps a second steel structure through a second clamping assembly. The center lines of the first and second clamping assemblies always coincide during movement, allowing the first and second steel structures to be aligned for welding. This steel structure welding device is equipped with movable clamping assemblies that can clamp steel structures of different sizes and simultaneously drive the steel structures to move and rotate, providing more stable working conditions for welding. It also features mutually cooperating sliding grooves and support rods, threaded rods and support plates. When the second steel structure moves towards the first steel structure in the clamped state, it can accurately dock the welding surfaces and simultaneously rotate the welding surfaces for welding, improving welding efficiency and quality. However, in actual use, the following problems still exist: 1. Although the steel structure welding device can clamp, fix and connect steel structural components of different sizes, a small amount of debris is likely to be present at the welding part during the welding process after the connection. If the debris is not treated, it will affect the subsequent welding effect. After welding, the welding part will have a high temperature. Using natural cooling to reduce the cooling efficiency will be reduced. 2. When butt welding steel structural components using this steel structure welding device, only horizontal butt welding can be performed, and angled butt welding is not possible. Furthermore, it is inconvenient to adjust the angle of the steel structural components according to the required angle, thus reducing practicality.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was developed based on the existing welding device used for steel structure processing and connection. Summary of the Invention

[0006] The purpose of this invention is to provide a welding device for steel structure processing and butt welding, so as to solve the problems mentioned in the background art, such as the inconvenience of removing chips from steel structural components before welding, cooling steel structural components after welding, and the inconvenience of angled butt welding.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding device for steel structure processing and joining, comprising a fixed base, The top surface of the fixed base is symmetrically equipped with a support plate, and the inner sides of both ends of the support plate are provided with a support plate. A clamping and positioning mechanism, which is installed on the two sides of the support plate, is used to clamp and position the steel structural component; A support frame is fixedly installed at the top rear end of the fixed base. A first servo motor is fixedly connected to the bottom of the support frame. A transmission screw is connected to the top of the first servo motor. The top end of the transmission screw is rotatably connected to the support frame. A lifting seat is sleeved on the outer ring of the transmission screw. An electric push rod is installed at the front end of the lifting seat. A welding head is fixedly installed at the front end of the electric push rod. The chip removal and cooling mechanism is connected between the lifting seat and the support frame to achieve chip removal before welding and cooling after welding.

[0008] Preferably, the clamping and positioning mechanism includes a movable frame that slides through the interior of the two side trays. A positioning block is fixedly connected to the top of the movable frame. An adjusting screw rotates through the interior of the positioning block. First rotating wheels are fixedly installed at both ends of the adjusting screw. Side clamping plates are threaded onto both ends of the adjusting screw. A lifting frame is fixedly installed at the bottom of the movable frame. A lifting screw is threaded through the center of the lifting frame. A connecting bearing is installed at the top of the lifting screw. The connecting bearing is connected to the bottom surface of the tray. A second rotating wheel is fixedly installed at the bottom of the lifting screw.

[0009] Preferably, the threads at both ends of the adjusting screw are arranged in opposite directions, and the two sides of the side clamp are slidably connected to the inner side of the movable frame.

[0010] By adopting the above technical solution, it is easy to stably clamp the steel structural components that need to be welded by the clamping and positioning mechanism. Then, after the clamped steel structural components are welded, they can be easily disassembled and unloaded, which improves the stability of clamping and the convenience of unloading.

[0011] Preferably, the chip removal and cooling mechanism includes ventilation pipes symmetrically installed on both sides of the lifting seat, a driven wheel rotatably installed inside the ventilation pipe, fixed teeth symmetrically and equally spaced on the inner side of the support frame, the fixed teeth meshing with the driven wheel, and a fan blade fixedly installed on the inner ring of the driven wheel.

[0012] Preferably, the chip removal and cooling mechanism further includes a connecting pipe fixedly connected to the front end of the ventilation pipe. The front end of the connecting pipe is fixedly connected to both sides of the welding head. A diversion pipe is fixedly connected to the bottom of the front end of the connecting pipe. A connecting seat is fixedly connected to the bottom end of the diversion pipe. The connecting seat is arranged in a ring structure.

[0013] By adopting the above technical solution, it is convenient to use the lifting platform to drive the chip removal and cooling mechanism to operate. Thus, when the lifting platform is lowered, the chip removal and cooling mechanism can effectively remove chips from the welded joints of the steel structure, avoiding affecting the welding effect. When the lifting platform is raised, the chip removal and cooling mechanism can effectively cool the welded joints with air, improving the cooling efficiency of the welding device used for steel structure processing and docking.

[0014] Preferably, the inner sides of both ends of the support plate are fixedly connected to symmetrically arranged trays.

[0015] By adopting the above technical solution, it is convenient to use the fixed connection between the support plate and the pallet to perform horizontal docking and positioning of the clamped steel structural components, thereby ensuring the stability of the welding process.

[0016] Preferably, positioning shaft seats are symmetrically installed at both ends of the support plate, and connecting rods are installed through the interior of the positioning shaft seats. A drive pulley is fixedly installed at the rear end of the connecting rods at both ends. A driven pulley is symmetrically rotatably installed at the middle of the rear side of the support plate. A transmission gear is fixedly sleeved on the outer ring of the driven pulley. The transmission gears are meshed and connected to each other. A transmission belt is connected between the driven pulley and the drive pulley at the same end.

[0017] Preferably, the front ends of the connecting rods at both ends are rectangular in shape, and a baffle is fixedly installed at the front end of the connecting rod. A movable plate is slidably sleeved on the outer ring of the rectangular connecting rod. A return spring is sleeved on the outer ring of the connecting rod between the movable plate and the baffle. A locking rod is fixedly installed on the rear side of the movable plate away from the connecting rod. The movable plate and the locking rod form a telescopic structure with the baffle through the return spring. The front ends of the support plate are provided with locking grooves at equal angles around the positioning shaft seat. The locking grooves are movably locked and connected to the locking rod.

[0018] By adopting the above technical solution, the support plates on both sides can rotate and be positioned synchronously at both ends of the support plate. This allows the clamping and positioning mechanism to position the clamped steel structural components at different angles and to perform butt welding at different angles. This facilitates the butt welding of steel structural components at angles and improves the practicality of the welding device for steel structure processing and butt welding.

[0019] Preferably, rotating wheels are fixedly installed on the inner sides of the two end plates. The rotating wheels have limit grooves inside. Limit seats are slidably connected inside the limit grooves. Mounting seats are fixedly connected to the inner ends of the limiting seats. Mounting seats are fixedly connected to the top of the support plate. External teeth are installed at equal angles on the outer rings of the two end rotating wheels. A second servo motor is fixedly installed on the top of the fixed base. Drive gears are fixedly installed at both ends of the second servo motor. The drive gears are meshed with the external teeth.

[0020] Preferably, the inner ring of the rotating wheel on the left is equipped with internal teeth at equal angles, and the inner ring of the internal teeth is symmetrically meshed with driven gears. The right end of the driven gear is fixedly connected to a transmission rod, and a connecting plate is rotatably sleeved on the middle part of the transmission rod. The connecting plate is fixedly connected to the mounting base on the left, and a grinding wheel is fixedly installed on the right end of the transmission rod.

[0021] By adopting the above technical solution, it is convenient to drive the rotation of the pallets at both ends, thereby causing the tubular steel structure held by the clamping and positioning mechanism to rotate. This facilitates the rotation of the steel structure after docking at the bottom of the welding head, which is beneficial for the welding head to perform circumferential welding on the tubular steel structure. This further improves the practicality and effectiveness of the welding device for steel structure processing and docking.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The welding device for steel structure processing and docking has a clamping and positioning mechanism that can stably clamp two steel structural components and allow them to be docked. The rotation of the transmission screw and the extension and retraction of the electric push rod can drive the welding head to rise, fall, and move, thereby facilitating effective welding of the steel structural components and improving the convenience of the welding work. Simultaneously, during the rising and falling of the welding head, a chip removal and cooling mechanism can be driven to remove chips before welding and cool down after welding, improving functionality. Specific details are as follows: 1. When the support plate and the pallet are fixedly connected, the steel structural components can be stably connected in the horizontal direction, thereby improving the stability of the welding work; 2. When the support plate and the pallet are rotatably connected through the positioning shaft seat, the transmission structure consisting of the driving pulley, driven pulley, transmission gear and transmission belt can rotate in opposite directions, thereby driving the two clamped steel structural parts to dock at different angles. The locking rod can be used to lock the different angle locking grooves to achieve different angle positioning, which is conducive to realizing the docking and welding of steel structural parts at different angles and improves the practicality of the welding device for steel structure processing and docking. 3. When the support plate and the pallet are connected via rotating wheels, limiting grooves, limiting seats, and mounting bases, the second servo motor can drive the drive gear to rotate the steel structure during the welding process. This, combined with the welding head, enables circumferential rotary welding, further improving the practicality of the welding device for steel structure processing and docking. The rotating wheel can also drive the transmission rod and the grinding wheel to rotate, so that the grinding wheel can effectively grind the weld slag at the weld seam, thus improving the functionality of the welding device for steel structure processing and docking. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure from one side of an embodiment of the present invention; Figure 2 This is a side sectional view of the clamping and positioning mechanism of the present invention; Figure 3 This is a schematic diagram of the connection structure between the chip removal and cooling mechanism and the support frame of the present invention; Figure 4 This is a side sectional view of the chip removal and cooling mechanism of the present invention; Figure 5 This is a schematic diagram of the chip removal and cooling mechanism and its connection structure in this invention; Figure 6 This is a schematic diagram of the front side view of Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the rear side view of Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the drive pulley and driven pulley transmission structure in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the separation structure of the locking rod and the locking groove in Embodiment 2 of the present invention; Figure 10 This is a side view structural diagram of Embodiment 3 of the present invention; Figure 11 This is a schematic diagram of the rotating wheel distribution structure in Embodiment 3 of the present invention; Figure 12 This is an exploded view of the rotating wheel and the limiting seat in Embodiment 3 of the present invention.

[0024] In the diagram: 1. Fixed base; 2. Support plate; 3. Tray; 4. Movable frame; 5. Positioning block; 6. Adjusting screw; 7. First rotating wheel; 8. Side clamp plate; 9. Lifting frame; 10. Lifting screw; 11. Connecting bearing; 12. Second rotating wheel; 13. Support frame; 14. First servo motor; 15. Transmission screw; 16. Lifting seat; 17. Electric push rod; 18. Welding head; 19. Ventilation pipe; 20. Driven wheel; 21. Fixed tooth; 22. Fan blade; 23. Connecting pipe; 24. Diverter pipe; 25. 26. Connecting seat; 27. Positioning shaft seat; 28. Driving pulley; 29. ​​Driven pulley; 30. Driven belt; 31. Connecting rod; 32. Baffle; 33. Movable plate; 34. Return spring; 35. Engaging rod; 36. Engaging groove; 37. Rotating wheel; 38. Limit groove; 39. Limit seat; 40. Mounting seat; 41. External gear; 42. Second servo motor; 43. Drive gear; 44. Connecting plate; 45. Driven rod; 46. Driven gear; 47. Internal gear; 48. Grinding wheel. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1 - Figure 5 This invention provides a technical solution: a welding device for steel structure processing and butt welding, including a fixed base 1, a support plate 2 symmetrically mounted on the top surface of the fixed base 1, and support plates 3 arranged on the inner sides of both ends of the support plate 2. The inner sides of both ends of the support plate 2 are fixedly connected to the symmetrically arranged support plates 3. A clamping and positioning mechanism is installed on the two support plates 3 for clamping and positioning steel structural components. The clamping and positioning mechanism includes a movable frame 4 that slides through the interior of the two support plates 3. A positioning block 5 is fixedly connected to the top of the movable frame 4. The positioning block 5 rotates internally. An adjusting screw 6 is inserted through the center of the movable frame 4. The threads at both ends of the adjusting screw 6 are reversed. A first rotating wheel 7 is fixedly installed at both ends of the adjusting screw 6. Side clamps 8 are threaded onto both ends of the adjusting screw 6. The two sides of the side clamps 8 are slidably connected to the inner side of the movable frame 4. A lifting frame 9 is fixedly installed at the bottom of the movable frame 4. A lifting screw 10 is threaded through the center of the lifting frame 9. A connecting bearing 11 is installed at the top of the lifting screw 10. The connecting bearing 11 is connected to the bottom surface of the support plate 3. A second rotating wheel 12 is fixedly installed at the bottom of the lifting screw 10. The above-described structure design allows the steel structural component to be clamped and positioned by placing it on the top surface of the support plates 3 at both ends. Then, the rotation of the second rotating wheel 12 drives the lifting screw 10 to rotate in conjunction with the connecting bearing 11. The rotation of the lifting screw 10 then drives the lifting frame 9 to rise and fall, which in turn causes the lifting frame 9 to slide and descend inside the support plate 3 until the bottom surface of the positioning block 5 is in contact with the top surface of the steel structural component. Next, the rotation of the first rotating wheel 7 drives the adjusting screw 6 to rotate inside the positioning block 5. The adjusting screw 6, with its threads at both ends reversed, drives the side clamping plates 8 sleeved at both ends to move towards each other until the inner side of the side clamping plates 8 is in contact with the two sides of the steel structural component, thereby achieving the clamping and positioning of the steel structural component.

[0027] A support frame 13 is fixedly installed at the top rear end of the fixed base 1. A first servo motor 14 is fixedly connected to the bottom of the support frame 13. A transmission screw 15 is connected to the top of the first servo motor 14. The top end of the transmission screw 15 is rotatably connected to the support frame 13. A lifting seat 16 is sleeved on the outer ring of the transmission screw 15. An electric push rod 17 is installed at the front end of the lifting seat 16. A welding head 18 is fixedly installed at the front end of the electric push rod 17. The design of the above structure allows the first servo motor 14 to drive the transmission screw 15 to rotate after the steel structural components are positioned and connected. The threaded connection between the transmission screw 15 and the lifting seat 16 causes the lifting seat 16 to descend, simultaneously driving the electric push rod 17 and the welding head 18 to descend until the welding head 18 is aligned with the steel structural components. At this point, the welding head 18, in conjunction with the push of the electric push rod 17, can be used to perform the welding of the steel structural components. After welding is completed, the reverse rotation of the transmission screw 15 driven by the first servo motor 14 causes the lifting seat 16, the electric push rod 17, and the welding head 18 to rise and release the welding process.

[0028] The chip removal and cooling mechanism is connected between the lifting seat 16 and the support frame 13 to achieve chip removal before welding and cooling after welding. The chip removal and cooling mechanism includes ventilation pipes 19 symmetrically installed on both sides of the lifting seat 16. A driven wheel 20 is rotatably installed inside the ventilation pipe 19. Fixed teeth 21 are symmetrically and equally spaced on the inner side of the support frame 13. The fixed teeth 21 are meshed with the driven wheel 20. A fan blade 22 is fixedly installed on the inner ring of the driven wheel 20. The chip removal and cooling mechanism also includes a connecting pipe 23 fixedly connected to the front end of the ventilation pipe 19. The front end of the connecting pipe 23 is fixedly connected to both sides of the welding head 18. A diversion pipe 24 is fixedly connected to the bottom of the front end of the connecting pipe 23. A connecting seat 25 is fixedly connected to the bottom end of the diversion pipe 24. The connecting seat 25 is arranged in a ring structure. The design of the above structure allows the lifting seat 16 to lower the ventilation pipes 19 on both sides when it descends. Then, the engagement of the fixed tooth 21 with the driven wheel 20 causes the driven wheel 20 to rotate inside the ventilation pipe 19, driving the inner fan blade 22 to rotate. At this time, the fan blade 22 generates suction, which is transmitted through the connecting pipe 23, the diversion pipe 24, and the connecting seat 25 to pneumatically extract debris at the joint of the steel structure components, preventing debris from affecting the welding effect. When the lifting seat 16 rises, it can drive the ventilation pipes 19 on both sides to rise. Then, the engagement of the fixed tooth 21 with the driven wheel 20 drives the driven wheel 20 and the fan blade 22 to rotate. At this time, the fan blade 22 generates blowing force, which is then discharged through the connecting pipe 23, the diversion pipe 24, and the connecting seat 25 to provide wind-powered heat dissipation and cooling for the welded joint of the steel structure components, improving cooling efficiency.

[0029] Example 2: Based on Example 1, the present invention adopts the following... Figure 6 - Figure 9 The technical solution shown further discloses that positioning shaft seats 26 are symmetrically installed at both ends of the support plate 2, and connecting rods 31 are installed through the interior of the positioning shaft seats 26. A drive pulley 27 is fixedly installed at the rear end of the connecting rods 31 at both ends. A driven pulley 28 is symmetrically rotatably installed at the rear center of the support plate 2. A transmission gear 29 is fixedly sleeved on the outer ring of the driven pulley 28, and the transmission gears 29 mesh with each other for transmission. A transmission belt 30 connects the driven pulley 28 and the drive pulley 27 at the same end. The front ends of the connecting rods 31 at both ends have a rectangular structure. The connecting rod 31 is configured such that a baffle 32 is fixedly installed at the front end, and a movable plate 33 is slidably sleeved on the outer ring of the rectangular connecting rod 31. A return spring 34 is sleeved on the outer ring of the connecting rod 31 between the movable plate 33 and the baffle 32. A locking rod 35 is fixedly installed on the rear side of the movable plate 33 away from the connecting rod 31. The movable plate 33 and the locking rod 35 form a telescopic structure with the baffle 32 through the return spring 34. The front two ends of the support plate 2 are provided with locking grooves 36 at equal angles with the positioning shaft seat 26 as the center. The locking grooves 36 are movably locked and connected with the locking rod 35. The above-described structure design allows for the following process during angled butt welding of steel structural components: pulling the movable plate 33 forward causes the engaging rod 35 to separate from the engaging groove 36 currently connected; then, rotating the support plate 3 causes the connecting rod 31 to rotate within the positioning shaft seats 26 at both ends of the support plate 2; when rotating the support plate 3 on one side, the connecting rod 31 on that side drives the driving pulley 27 at the rear end to rotate; then, the driving pulley 27 drives the corresponding driven pulley 28 to rotate via the transmission belt 30; and then, the driven pulley 28 drives the other driven pulley 28 to rotate via the meshing of the transmission gears 29. The driven pulley 28 and the transmission belt 30 on one side rotate, which can drive the connecting rod 31 and the support plate 3 on the other side to rotate in opposite directions. This facilitates the adjustment of the support plates 3 on both sides to the same angle. After the angle adjustment is completed, the pull on the movable plate 33 is released, so that the return spring 34 can cooperate with the baffle 32 to push the movable plate 33 and the locking rod 35 to reset. Then the locking rod 35 can engage with the corresponding locking groove 36, thereby achieving the positioning after angle adjustment. This allows for the angle adjustment of the clamped steel structure to achieve butt welding work at different angles.

[0030] Example 3: Based on Example 1, the present invention adopts the following... Figure 10 - Figure 12 The technical solution shown further discloses that rotating wheels 37 are fixedly installed on the inner side of the two end support plates 3. The rotating wheels 37 have a limit groove 38 inside. The limit groove 38 is slidably connected to the limit seat 39. The inner end of the limit seat 39 is fixedly connected to the mounting seat 40. The mounting seat 40 is fixedly connected to the top of the support plate 2. The outer ring of the two end rotating wheels 37 is equipped with external teeth 41 at equal angles. The top of the fixed base 1 is fixedly installed with a second servo motor 42. The two ends of the second servo motor 42 are fixedly installed with drive gears 43. The drive gears 43 are meshed with the external teeth 41. The inner ring of the left rotating wheel 37 is equipped with internal teeth 47 at equal angles. The inner ring of the internal teeth 47 is symmetrically meshed with a driven gear 46. The right end of the driven gear 46 is fixedly connected to a transmission rod 45. The middle part of the transmission rod 45 is rotatably sleeved with a connecting plate 44. The connecting plate 44 is fixedly connected to the left mounting seat 40. The right end of the transmission rod 45 is fixedly installed with a grinding wheel 48. The above-described structure design allows the second servo motor 42 to start and drive the drive gears 43 at both ends to rotate during the butt welding of the tubular steel structure. The drive gears 43 then mesh with the external gears 41 to drive the rotating wheels 37 on both sides to rotate. The rotating wheels 37 then rotate around the outer ring of the limiting seat 39 through the limiting groove 38. At this time, the rotation of the rotating wheels 37 can drive the support plate 3 to rotate, thereby driving the clamped tubular steel structure to rotate, so that the welding head 18 can perform a circumferential welding on the tubular steel structure. The rotation of the rotating wheel 37 can drive the internal gear 47 to rotate synchronously, so that the internal gear 47 can drive the transmission rod 45 to rotate inside the connecting plate 44 by meshing with the driven gear 46, and drive the grinding wheel 48 to rotate to grind the weld seam, which is beneficial to remove the welding slag generated after welding. The mounting seat 40 can provide stable support for the limiting seat 39 and the connecting plate 44.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for steel structure processing and butt welding, comprising a fixed base (1), characterized in that: The top surface of the fixed base (1) is symmetrically equipped with a support plate (2), and the inner sides of both ends of the support plate (2) are provided with a support plate (3). A clamping and positioning mechanism is installed on the two sides of the support plate (3) for clamping and positioning the steel structure component; A support frame (13) is fixedly installed at the top rear end of the fixed base (1). A first servo motor (14) is fixedly connected to the bottom of the support frame (13). A transmission screw (15) is connected to the top of the first servo motor (14). The top end of the transmission screw (15) is rotatably connected to the support frame (13). A lifting seat (16) is sleeved on the outer ring of the transmission screw (15). An electric push rod (17) is installed at the front end of the lifting seat (16). A welding head (18) is fixedly installed at the front end of the electric push rod (17). The chip removal and cooling mechanism is connected between the lifting seat (16) and the support frame (13) to achieve chip removal before welding and cooling after welding.

2. The welding device for steel structure processing and butt welding according to claim 1, characterized in that: The clamping and positioning mechanism includes a movable frame (4) that slides through the inside of the two sides of the pallet (3). A positioning block (5) is fixedly connected to the top of the movable frame (4). An adjusting screw (6) rotates through the inside of the positioning block (5). A first rotating wheel (7) is fixedly installed at both ends of the adjusting screw (6). Side clamps (8) are threaded on both ends of the adjusting screw (6). A lifting frame (9) is fixedly installed at the bottom of the movable frame (4). A lifting screw (10) is threaded through the center of the lifting frame (9). A connecting bearing (11) is installed at the top of the lifting screw (10). The connecting bearing (11) is connected to the bottom surface of the pallet (3). A second rotating wheel (12) is fixedly installed at the bottom of the lifting screw (10).

3. The welding device for steel structure processing and butt welding according to claim 2, characterized in that: The threads at both ends of the adjusting screw (6) are arranged in opposite directions, and the two sides of the side clamp (8) are in contact with the inner side of the movable frame (4) for sliding connection.

4. The welding device for steel structure processing and butt welding according to claim 1, characterized in that: The chip removal and cooling mechanism includes ventilation pipes (19) symmetrically installed on both sides of the lifting seat (16). A driven wheel (20) is rotatably installed inside the ventilation pipe (19). Fixed teeth (21) are symmetrically and evenly installed on the inner side of the support frame (13). The fixed teeth (21) mesh with the driven wheel (20). A fan blade (22) is fixedly installed on the inner ring of the driven wheel (20).

5. The welding device for steel structure processing and butt welding according to claim 4, characterized in that: The chip removal and cooling mechanism also includes a connecting pipe (23) fixedly connected to the front end of the ventilation pipe (19). The front end of the connecting pipe (23) is fixedly connected to both sides of the welding head (18). A diversion pipe (24) is fixedly connected to the bottom of the front end of the connecting pipe (23). A connecting seat (25) is fixedly connected to the bottom end of the diversion pipe (24). The connecting seat (25) is arranged in a ring structure.

6. The welding device for steel structure processing and butt welding according to claim 1, characterized in that: The inner sides of both ends of the support plate (2) are fixedly connected to the symmetrically arranged trays (3).

7. The welding device for steel structure processing and butt welding according to claim 1, characterized in that: The support plate (2) is symmetrically equipped with positioning shaft seats (26) at both ends. A connecting rod (31) is installed through the inside of the positioning shaft seat (26). A drive pulley (27) is fixedly installed at the rear end of the connecting rod (31) at both ends. A driven pulley (28) is symmetrically rotated and installed in the middle of the rear side of the support plate (2). A transmission gear (29) is fixedly sleeved on the outer ring of the driven pulley (28). The transmission gears (29) are meshed and connected. A transmission belt (30) is connected between the driven pulley (28) and the drive pulley (27) at the same end.

8. The welding device for steel structure processing and butt welding according to claim 7, characterized in that: The front ends of the connecting rods (31) at both ends are rectangular in shape. A baffle (32) is fixedly installed on the front end of the connecting rod (31). A movable plate (33) is slidably sleeved on the outer ring of the rectangular connecting rod (31). A return spring (34) is sleeved on the outer ring of the connecting rod (31) between the movable plate (33) and the baffle (32). A locking rod (35) is fixedly installed on the rear side of the movable plate (33) away from the connecting rod (31). The movable plate (33) and the locking rod (35) form a telescopic structure with the baffle (32) through the return spring (34). The front ends of the support plate (2) are provided with locking grooves (36) at equal angles with the positioning shaft seat (26) as the center. The locking grooves (36) and the locking rods (35) are movably locked and connected.

9. A welding device for steel structure processing and butt welding according to claim 1, characterized in that: Rotating wheels (37) are fixedly installed on the inner side of the support plates (3) at both ends. A limiting groove (38) is opened inside the rotating wheel (37). A limiting seat (39) is slidably connected inside the limiting groove (38). A mounting seat (40) is fixedly connected to the inner end of the limiting seat (39). The mounting seat (40) is fixedly connected to the top end of the support plate (2). External teeth (41) are installed at equal angles on the outer ring of the rotating wheels (37) at both ends. A second servo motor (42) is fixedly installed on the top of the fixed base (1). Drive gears (43) are fixedly installed at both ends of the second servo motor (42). The drive gears (43) are meshed with the external teeth (41).

10. A welding device for butt welding of steel structures according to claim 9, characterized in that: The inner ring of the rotating wheel (37) on the left side is equipped with internal teeth (47) at equal angles. The inner ring of the internal teeth (47) is symmetrically meshed with driven gears (46). The right end of the driven gears (46) is fixedly connected to a transmission rod (45). The middle part of the transmission rod (45) is rotatably fitted with a connecting plate (44). The connecting plate (44) is fixedly connected to the mounting base (40) on the left side. The right end of the transmission rod (45) is fixedly installed with a grinding wheel (48).

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