Guided welding apparatus for large-span steel structure

Abstract

The present invention relates to the technical field of welding apparatuses. Provided is a guided welding apparatus for a large-span steel structure. The guided welding apparatus for a large-span steel structure comprises a fixing frame, wherein side frames are fixedly connected to both sides of the fixing frame; a base is fixedly connected to the bottom of each of the two side frames; sliders are slidably connected to both sides inside each of the two bases; a guide rail is fixedly connected to one end of each of the four sliders; two movable blocks are slidably connected inside each guide rail; an upper fixing plate and a lower fixing plate are fixedly connected to one side of the two movable blocks, respectively; lower support rods are rotationally connected to both ends of the front side of the lower fixing plate; and a lower support wheel is fixedly connected to the outer side of each of the two lower support rods. The guided welding apparatus for a large-span steel structure is used to weld I-shaped steel beams into a large-span steel structure, and facilitates rapid positioning of a steel beam and, once welding is completed, can move on the outer side of the steel beam to weld the next segment of the steel beam, improving welding efficiency.

Description

A guide welding device that spans a long steel structure Technical Field

[0001] This invention relates to a welding device, specifically a guide welding device that spans a long steel structure, belonging to the technical field of welding equipment. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates, and employs rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The various components or parts are typically connected by welds, bolts, or rivets.

[0003] Welding long-span steel structures requires welding multiple long steel beams together, including finishing welds on multiple I-beams. During welding, the steel structure needs to be fixed and supported. However, when welding long-span steel structures, due to the length of the steel beams, even a small offset can cause significant deviations at the connection points of two beams. Fixtures are needed to fix and support the ends of the steel beams. However, the dimensions of the welding fixtures must be designed specifically for the steel beams, and since long-span steel beams require multiple welding segments, the fixtures need to be disassembled and moved to the next welding position after each segment is welded, which is time-consuming. Summary of the Invention

[0004] The purpose of this invention is to provide a guide welding device for long-length steel structures to solve the above-mentioned problems. This addresses the issues in the prior art where, when fixing the steel beam, the size of the welding fixture needs to be designed specifically for the steel beam, and a long-length steel beam requires multiple welding sections. After one section is welded, the fixture needs to be disassembled and moved to the next welding position, which is time-consuming. Technical solution

[0005] To achieve the above objectives, the present invention provides the following technical solution: a guide welding device spanning a long steel structure, comprising a fixed frame, side frames fixedly connected to both sides of the fixed frame, bases fixedly connected to the bottom of each of the two side frames, sliders slidably connected to both sides inside the two bases, guide rails fixedly connected to one end of each of the four sliders, two moving blocks slidably connected inside each guide rail, an upper fixed plate and a lower fixed plate fixedly connected to one side of each of the two moving blocks, a lower support rod rotatably connected to both ends of the front side of the lower fixed plate, lower support wheels fixedly connected to the outer sides of each of the two lower support rods, an upper support rod rotatably connected to the front side of the upper fixed plate, an upper support wheel rotatably connected to the outer side of the upper support rod, sliding sleeves fixedly connected to both sides of the upper fixed plate, sliding plates slidably connected inside each of the two sliding sleeves, connecting rods rotatably connected to the top of each of the two sliding plates, and support wheels fixedly connected to the outer sides of each of the two connecting rods.

[0006] Preferably, support blocks are fixedly connected to both sides of the base, and a rotating cylinder is rotatably connected inside the support blocks, so that the rotating cylinder is rotatably connected inside the support blocks. The two support blocks support both ends of the rotating cylinder, improving the stability of the rotating cylinder when it rotates. A first threaded rod is slidably connected to both ends of the rotating cylinder, and the thread directions of the two first threaded rods are set to opposite. Guide plates are formed on both sides of the rotating cylinder, and sliding grooves are opened on both sides of the two first threaded rods. The guide plates are slidably connected inside the sliding grooves and are adapted to the sliding grooves, so that when the rotating cylinder rotates, the guide plates limit the sliding grooves, thereby driving the first threaded rods to rotate.

[0007] Preferably, the base has two fixedly connected limit plates on both sides. The two first threaded rods pass through the two limit plates and are threadedly connected to them, so that the limit plates limit the first threaded rods and allow them to move horizontally when rotating inside the limit plates. A rotating ring is fixedly connected to one end of each of the two first threaded rods. The two rotating rings are rotatably connected to one end of each of the two sliders. A rotating rod is fixedly connected to one side of each of the two rotating rings. The two rotating rods are rotatably connected to the inside of each of the two sliders, so that the first threaded rods rotate to drive the rotating rings to rotate, and the rotating rings drive the rotating rods to rotate. When the first threaded rods move, they push the rotating rings to move, and at the same time, they drive the sliders to move.

[0008] Preferably, a second threaded rod is rotatably connected inside the guide rail. The threads at both ends of the second threaded rod are set in opposite directions. The two moving blocks are respectively sleeved on the outer ends of the second threaded rod and threadedly connected to the second threaded rod, so that when the second threaded rod rotates, it drives the two moving blocks to move in opposite directions.

[0009] Preferably, a sleeve is fixedly connected to the rear side of each of the two sliding sleeves, and a sliding rod is fixedly connected to the rear end of each of the two sliding plates. The two sliding rods pass through the two sliding sleeves respectively and are slidably connected to the sliding sleeves. A spring is provided inside each of the two sliding sleeves. The two springs are sleeved on the outside of the sliding rods. The two ends of the springs are in contact with the sliding plate and the sliding sleeve respectively, so that the springs provide buffer support for the sliding plate.

[0010] Preferably, both sleeves are slidably connected to piston plates, each piston plate has multiple through holes, both sleeves are filled with buffer solution, and two sliding rods pass through the end walls of the two sleeves and are slidably connected to the two sleeves. The two sliding rods are fixedly connected to the two piston plates, so that when the slide plate slides inside the sleeve, it drives the sliding rods to move, and the sliding rods push the piston plates to move inside the sleeves, so that the buffer solution inside the sleeves passes through the multiple through holes inside the piston plates, forming a damping effect and improving the buffering effect on the slide plate.

[0011] Preferably, a motor is fixedly connected inside each of the two side frames, and a drive shaft is fixedly connected to the output end of each of the two motors. The two drive shafts pass through the two side frames and are rotatably connected to them. The bottom ends of the two drive shafts pass through the top walls of the two bases and are rotatably connected to them. A first bevel gear is fixedly connected to the bottom end of the drive shaft and the outside of the rotating cylinder. The two first bevel gears mesh with each other. The drive shaft is driven to rotate by starting the motor, and the rotation is transmitted through the first bevel gears, thereby driving the rotating cylinder to rotate.

[0012] Preferably, a second bevel gear is fixedly connected to one end of the rotating rod and the top end of the second threaded rod. The two second bevel gears are meshed together, and when the rotating rod rotates, the second threaded rod is driven to rotate through the second bevel gear transmission.

[0013] Preferably, L-shaped support blocks are fixedly connected to both sides of the bottom of the base, and top support wheels are rotatably connected to the opposite side of the two L-shaped support blocks, so that the L-shaped support blocks contact the steel beam and support the device.

[0014] Preferably, a first electric slide rail is fixedly connected to both sides of the inner side of the fixed frame. A second electric slide rail is installed at the moving end of the two first electric slide rails. A connecting frame is installed at the moving end of the second electric slide rail. Two fixing clamps are fixedly connected to one side of the connecting frame. A hydraulic cylinder is installed inside the two fixing clamps. A connecting sleeve is fixedly connected to the front side of the connecting frame. A welding machine is fixedly connected inside the connecting sleeve. The output end of the hydraulic cylinder is fixedly connected to the fixing sleeve. The working end of the welding machine is fixedly connected to the fixing sleeve, which facilitates welding of the steel beam. This invention provides a guide welding device for long-length steel structures, which has the following beneficial effects:

[0015] This long-spanning, steel-structure-spanning guide welding equipment allows two first threaded rods to move horizontally relative to each other within a limiting plate during rotation. As the two first threaded rods move inward, they drive two rotating rings, which in turn drive two sliders to slide inward toward the base. The movement of the sliders drives two guide rails, which in turn drive a moving block. This moving block then drives the upper and lower fixed plates, which in turn drive the sliding sleeve and slide plate. The slide plate then drives the connecting rod and support wheel, bringing the support wheel into contact with the inner wall of the groove in the I-beam. The support wheel then pushes the slide plate inward toward the sliding sleeve. The sliding mechanism compresses the spring as the slide moves, causing the spring to cushion the slide. Simultaneously, the slide's movement drives the sliding rod, which in turn pushes the piston plate inside the sleeve. The sleeve is filled with buffer solution, which flows through multiple holes inside the piston plate as it moves, creating a damping effect and enhancing the cushioning. This increases the stability of the slide during movement. Finally, when the slide retracts to the bottom of the sleeve, the support wheels contact the inner wall of the I-beam, causing the support wheels on both sides of the I-beam to push the contact ends of the two I-beams to align synchronously. This facilitates positioning and fixation of the I-beams, improving stability.

[0016] This long-spanning, steel-structure-spanning guide welding equipment, when the two first threaded rods rotate, drives the two rotating rings and the rotating rod to rotate. Simultaneously, the rotating rod drives the second bevel gear to rotate, which in turn drives the two second threaded rods to rotate. This causes the two moving blocks to move in opposite directions inside the guide rail, thereby causing the upper and lower fixed plates to move up and down in opposite directions. At the same time, the upper fixed plate drives the upper support rod and the upper support wheel to move upward, so that the upper support wheel contacts the top wall of the I-beam groove. The lower fixed plate drives the lower support rod and the lower support wheel to move downward, so that the lower support wheel contacts the bottom wall of the I-beam groove. This provides support for the upper and lower ends of the grooves on both sides of the I-beam, improving the stability of the I-beam and facilitating welding.

[0017] This long-spanning steel structure guide welding equipment moves the welding machine via a first and second electric slide rail, and activates a hydraulic cylinder to lower the fixed sleeve for welding, facilitating adjustment of the welding position. After welding at one end, it moves the fixed frame and side frame, causing the side frame to move the base and guide rail. This, in turn, causes the base to move the L-shaped support block and top support wheel, making the top support wheel roll on the top of the I-beam. Simultaneously, the guide rail moves the upper and lower support wheels, making them roll on the upper and lower walls of the I-beam's groove. The sliding plate moves the support wheel, causing it to move on the inner wall of the I-beam, and the fixed frame moves to the other end of the I-beam. This facilitates continuous welding of the I-beam, thus welding the I-beam beams into a long-spanning steel structure. The integrated welding device allows for rapid positioning of the steel beam. After welding, it can move to the outside of the steel beam to weld the next section, improving welding efficiency. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a front view of the present invention;

[0020] Figure 3 is a side view of the present invention;

[0021] Figure 4 is a schematic diagram of the structure of the fixing frame of the present invention;

[0022] Figure 5 is a schematic diagram of the side frame of the present invention;

[0023] Figure 6 is a structural schematic diagram of the base of the present invention;

[0024] Figure 7 is a schematic diagram of the side frame of the present invention;

[0025] Figure 8 is a schematic diagram of the rotating cylinder of the present invention;

[0026] Figure 9 is a schematic diagram of the structure of the guide plate of the present invention;

[0027] Figure 10 is a schematic diagram of the guide rail of the present invention;

[0028] Figure 11 is a schematic diagram of the structure of the sliding sleeve of the present invention;

[0029] Figure 12 is a schematic diagram of the structure of the skateboard of the present invention;

[0030] Figure 13 is a schematic diagram of the structure of the fixing frame of the present invention.

[0031] In the diagram: 1. Fixed frame; 2. Side frame; 3. Base; 5. Slider; 6. Guide rail; 7. Moving block; 8. Upper fixed plate; 9. Lower fixed plate; 10. Lower support rod; 11. Lower support wheel; 12. Upper support rod; 13. Upper support wheel; 14. Sliding sleeve; 15. Slide plate; 16. Connecting rod; 17. Support wheel; 18. Spring; 19. Sleeve; 20. Piston plate; 21. Sliding rod; 22. Support block; 23. Rotating cylinder; 24. First threaded rod ; 25. Limiting plate; 26. Slide groove; 27. Guide plate; 28. First bevel gear; 29. ​​Motor; 30. Drive shaft; 31. Rotating ring; 32. Rotating rod; 33. Second bevel gear; 34. Second threaded rod; 35. L-shaped support block; 36. Top support wheel; 37. First electric slide rail; 38. Second electric slide rail; 39. Connecting frame; 40. Fixing clamp; 41. Hydraulic cylinder; 42. Connecting sleeve; 43. Fixing sleeve; 44. Welding machine. Detailed Implementation

[0032] This invention provides a guide welding device that spans a long steel structure.

[0033] Please refer to Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13. The system includes a fixed frame 1, with side frames 2 fixedly connected to both sides of the fixed frame 1. Bases 3 are fixedly connected to the bottom of each side frame 2. Sliding sliders 5 are slidably connected to both sides of each of the two bases 3. Guide rails 6 are fixedly connected to one end of each of the four sliders 5. Two moving blocks 7 are slidably connected inside each guide rail 6. An upper fixed plate 8 and a lower fixed plate 9 are fixedly connected to one side of each of the two moving blocks 7. Lower support rods 10 are rotatably connected to both ends of the front side of the lower fixed plate 9. Lower support wheels 11 are fixedly connected to the outer sides of each of the two lower support rods 10. An upper support rod 12 is rotatably connected to the front side of the upper fixed plate 8. The support rod 12 is rotatably connected to the upper support wheel 13. The upper fixed plate 8 is fixedly connected to both sides of the upper support plate 8. The two slides 14 are slidably connected to the inside of the two slides 14. The top of the two slides 15 is rotatably connected to the connecting rod 16. The two connecting rods 16 are fixedly connected to the outside of the two connecting rods 16. The sleeves 19 are fixedly connected to the rear side of the two slides 14. The rear end of the two slides 15 is fixedly connected to the sliding rod 21. The two sliding rods 21 pass through the two slides 14 and are slidably connected to the slides 14. The two slides 14 are provided with springs 18 inside. The two springs 18 are sleeved on the outside of the sliding rods 21. The two ends of the springs 18 are in contact with the slides 15 and the slides 14 respectively, so that the springs 18 provide buffer support for the slides 15.

[0034] Both sleeves 19 are slidably connected to piston plates 20, and both piston plates 20 have multiple through holes. Both sleeves 19 are filled with buffer solution. Two sliding rods 21 pass through the end walls of the two sleeves 19 and are slidably connected to the two sleeves 19. The two sliding rods 21 are fixedly connected to the two piston plates 20. When the slide plate 15 slides inside the sliding sleeve 14, it drives the sliding rods 21 to move, and the sliding rods 21 push the piston plates 20 to move inside the sleeves 19. This allows the buffer solution inside the sleeves 19 to pass through the multiple through holes inside the piston plates 20, forming a damping effect and improving the buffering effect on the slide plate 15.

[0035] Support blocks 22 are fixedly connected to both sides of the base 3. A rotating cylinder 23 is rotatably connected inside the support blocks 22, so that the rotating cylinder 23 is rotatably connected to the support blocks 22. The two support blocks 22 support both ends of the rotating cylinder 23, improving the stability of the rotating cylinder 23 when rotating. First threaded rods 24 are slidably connected to both ends of the rotating cylinder 23. The threads of the two first threaded rods 24 are set in opposite directions. Guide plates 27 are formed on both sides of the rotating cylinder 23. Sliding grooves 26 are opened on both sides of the two first threaded rods 24. The guide plates 27 are slidably connected to the sliding grooves 26 and are adapted to the sliding grooves 26. When the rotating cylinder 23 rotates, the guide plates 27 limit the sliding grooves 26, thereby driving the first threaded rods 24 to rotate. The base 3 is fixed on both sides. A limiting plate 25 is connected, and two first threaded rods 24 pass through the two limiting plates 25 respectively and are threadedly connected to the two limiting plates 25, so that the limiting plates 25 limit the first threaded rods 24 and allow the first threaded rods 24 to move horizontally when rotating inside the limiting plates 25. A rotating ring 31 is fixedly connected to one end of each of the two first threaded rods 24. The two rotating rings 31 are rotatably connected to one end of each of the two sliders 5. A rotating rod 32 is fixedly connected to one side of each of the two rotating rings 31. The two rotating rods 32 are rotatably connected to the inside of each of the two sliders 5, so that when the first threaded rods 24 rotate, they drive the rotating rings 31 to rotate, and the rotating rings 31 drive the rotating rods 32 to rotate. When the first threaded rods 24 move, they push the rotating rings 31 to move, and at the same time drive the sliders 5 to move.

[0036] Both side frames 2 are fixedly connected to motors 29, and both motors 29 are fixedly connected to drive shafts 30 at their output ends. The two drive shafts 30 pass through the two side frames 2 and are rotatably connected to them. The bottom ends of the two drive shafts 30 pass through the top walls of the two bases 3 and are rotatably connected to them. The bottom ends of the drive shafts 30 and the outer side of the rotating cylinder 23 are fixedly connected to first bevel gears 28. The two first bevel gears 28 are meshed together. The motors 29 start the drive shafts 30 to rotate, and the first bevel gears 28 drive the rotation, thereby driving the rotating cylinder 23 to rotate.

[0037] The guide rail 6 is rotatably connected to a second threaded rod 34. The threads at both ends of the second threaded rod 34 are set in opposite directions. Two moving blocks 7 are respectively sleeved on the outer ends of the second threaded rod 34 and threadedly connected to the second threaded rod 34, so that when the second threaded rod 34 rotates, it drives the two moving blocks 7 to move in opposite directions. One end of the rotating rod 32 and the top end of the second threaded rod 34 are fixedly connected to a second bevel gear 33. The two second bevel gears 33 are meshed and connected. When the rotating rod 32 rotates, it drives the second threaded rod 34 to rotate through the second bevel gears 33.

[0038] L-shaped support blocks 35 are fixedly connected to both sides of the bottom of the base 3. Top support wheels 36 are rotatably connected to the opposite side of the two L-shaped support blocks 35, so that the L-shaped support blocks 35 contact the steel beam to support the device.

[0039] The fixed frame 1 has two fixed electric slide rails 37 on both sides inside. The moving ends of the two first electric slide rails 37 are equipped with second electric slide rails 38. The moving ends of the second electric slide rails 38 are equipped with connecting frames 39. Two fixing clips 40 are fixedly connected to one side of the connecting frame 39. Hydraulic cylinders 41 are installed inside the two fixing clips 40. A connecting sleeve 42 is fixedly connected to the front side of the connecting frame 39. A welding machine 44 is fixedly connected inside the connecting sleeve 42. A fixing sleeve 43 is fixedly connected to the output end of the hydraulic cylinder 41. The working end of the welding machine 44 is fixedly connected to the fixing sleeve 43 to facilitate welding of the steel beam.

[0040] Specifically, when welding large-span I-beams, the length of the beams has a significant impact on the welding process. However, the beams are prone to shifting during welding, so it is necessary to align and position the connecting ends of the two beams. The device is then placed at the connection point of the two beams, with multiple L-shaped supports 35 on both sides placed on top of the beams and in contact with the two beams. At the same time, multiple top support wheels 36 also contact the beams to provide fixed support for the device.

[0041] Two motors 29 start and drive the transmission shaft 30 to rotate, which in turn drives the two first bevel gears 28 to rotate. The first bevel gears 28 then drive the rotating cylinder 23 to rotate inside the support block 22. When the rotating cylinder 23 rotates, the guide plates 27 formed on both sides of the rotating cylinder 23 limit the sliding grooves 26 on both sides of the two first threaded rods 24, causing the two first threaded rods 24 at both ends of the rotating cylinder 23 to rotate synchronously with it. The first threaded rods 24 are threadedly connected to the limiting plate 25, allowing them to move horizontally relative to each other within the limiting plate 25 during rotation. When the two first threaded rods 24 move inward, they drive the two rotating rings 31 to move, which in turn drive the two sliders 5 to slide inward toward the base 3. The movement of the two sliders 5 drives the two guide rails 6 to move, which in turn drive the moving block 7 to move, causing the moving block 7 to move the upper fixed plate 8 and the lower fixed plate 8. The movement of plate 9 causes the upper fixed plate 8 to move the sliding sleeve 14 and the sliding plate 15. Then, the sliding plate 15 moves the connecting rod 16 and the support wheel 17, causing the support wheel 17 to contact the inner wall of the groove in the I-beam. The support wheel 17 pushes the sliding plate 15 towards the inside of the sliding sleeve 14, causing the sliding plate 15 to compress the spring 18 during movement. The spring 18 then cushions the sliding plate 15. Simultaneously, the movement of the sliding plate 15 moves the sliding rod 21, causing the sliding rod 21 to push the piston plate 20 inside the sleeve 19. The sleeve 19 is filled with buffer solution. When the piston plate 20 moves, the buffer solution inside the sleeve 19 flows through multiple through holes inside the piston plate 20, forming a damping effect, improving the buffering effect, and increasing the stability of the slide plate 15 when moving. Finally, when the slide plate 15 retracts to the bottom of the inner end of the sliding sleeve 14, the support wheel 17 abuts against the inner wall of the I-beam, thereby pushing the contact ends of the two I-beams to align synchronously, which facilitates the positioning of the I-beams and thus fixes the I-beams, improving stability.

[0042] When the two first threaded rods 24 rotate, they drive the two rotating rings 31 and the rotating rod 32 to rotate. At the same time, the rotating rod 32 drives the second bevel gear 33 to rotate, which in turn drives the two second threaded rods 34 to rotate. This causes the two moving blocks 7 to move in opposite directions inside the guide rail 6, thereby causing the upper fixed plate 8 and the lower fixed plate 9 to move in opposite directions up and down. At the same time, the upper fixed plate 8 drives the upper support rod 12 and the upper support wheel 13 to move upward, so that the upper support wheel 13 contacts the top wall of the I-beam groove. The lower fixed plate 9 drives the lower support rod 10 and the lower support wheel 11 to descend, so that the lower support wheel 11 contacts the bottom wall of the I-beam groove. This provides support for the upper and lower ends of the grooves on both sides of the I-beam, improves the stability of the I-beam, and facilitates welding.

[0043] Driven by the first electric slide rail 37 and the second electric slide rail 38, the welding machine 44 is moved, and the hydraulic cylinder 41 is activated to lower the fixed sleeve 43 for welding, which facilitates the adjustment of the welding position. After welding is completed at one end, the fixed frame 1 and the side frame 2 are moved, causing the side frame 2 to move the base 3 and the guide rail 6. This causes the base 3 to move the L-shaped support block 35 and the top support wheel 36, making the top support wheel 36 roll on the top of the I-beam. At the same time, the guide rail 6 moves the upper support wheel 13 and the lower support wheel 11, making them roll on the upper and lower walls of the groove of the I-beam. The sliding plate 15 moves the support wheel 17, making the support wheel 17 move on the inner wall of the I-beam. This moves the fixed frame 1 to the other end of the I-beam, which facilitates continuous welding of the I-beam. In this way, the I-beam beam is welded into a long-span steel structure. The integrated welding device is conducive to the rapid positioning of the steel beam. After welding is completed, it can be moved to the outside of the steel beam to weld the next section of the steel beam, improving welding efficiency.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A guide-type welding device spanning a long steel structure, comprising a fixed frame (1), characterized in that: The fixed frame (1) is fixedly connected to two side frames (2) on both sides. The bottom of each of the two side frames (2) is fixedly connected to a base (3). The two bases (3) are slidably connected to two sides inside. The four sliders (5) are fixedly connected to one end of each guide rail (6). The guide rail (6) is slidably connected to two moving blocks (7). The two moving blocks (7) are fixedly connected to one side of an upper fixed plate (8) and a lower fixed plate (9) respectively. The lower fixed plate (9) is rotatably connected to both ends of its front side with a lower support rod (1). 0), both lower support rods (10) are fixedly connected to the outer side of each lower support rod (11), the upper support rod (12) is rotatably connected to the front side of the upper fixed plate (8), the upper support rod (12) is rotatably connected to the outer side of each upper support rod (12), the upper support rod (13) is fixedly connected to both sides of the upper fixed plate (8), the two sliding sleeves (14) are slidably connected to the inside of each sliding sleeve (14), the top of each sliding sleeve (15) is rotatably connected to a connecting rod (16), and the outer side of each connecting rod (16) is fixedly connected to a support wheel (17).

2. The guide welding equipment for a long-length steel structure as described in claim 1, characterized in that: The base (3) has a support block (22) fixedly connected to both sides inside. The support block (22) has a rotating cylinder (23) rotatably connected inside. The rotating cylinder (23) has a first threaded rod (24) slidably connected to both ends inside. The two first threaded rods (24) have opposite thread directions. The rotating cylinder (23) has a guide plate (27) formed on both sides inside. The two first threaded rods (24) have a sliding groove (26) on both sides. The guide plate (27) is slidably connected to the sliding groove (26) and is adapted to the sliding groove (26).

3. The guide welding equipment for a long-length steel structure as described in claim 2, characterized in that: The base (3) has two fixedly connected limit plates (25) on both sides inside. The two first threaded rods (24) pass through the two limit plates (25) respectively and are threadedly connected to the two limit plates (25). One end of each of the two first threaded rods (24) is fixedly connected to a rotating ring (31). The two rotating rings (31) are rotatably connected to one end of each of the two sliders (5). One side of each of the two rotating rings (31) is fixedly connected to a rotating rod (32). The two rotating rods (32) are rotatably connected to the inside of each of the two sliders (5).

4. The guide welding equipment for a long-length steel structure as described in claim 3, characterized in that: The guide rail (6) is rotatably connected to a second threaded rod (34). The thread directions at both ends of the second threaded rod (34) are set to opposite directions. The two moving blocks (7) are respectively sleeved on the outer ends of the second threaded rod (34) and threadedly connected to the second threaded rod (34).

5. The guide welding equipment for a long-length steel structure as described in claim 1, characterized in that: Both of the two sliding sleeves (14) are fixedly connected to the rear side of the sleeve (19), and both of the two sliding plates (15) are fixedly connected to the rear end of the sliding rod (21). The two sliding rods (21) pass through the two sliding sleeves (14) respectively and are slidably connected to the sliding sleeves (14). Both of the two sliding sleeves (14) are provided with springs (18). The two springs (18) are sleeved on the outside of the sliding rods (21). The two ends of the springs (18) are in contact with the sliding plate (15) and the sliding sleeve (14) respectively.

6. The guide welding equipment for a long-length steel structure as described in claim 5, characterized in that: Both sleeves (19) are slidably connected to piston plates (20), both piston plates (20) have multiple through holes, both sleeves (19) are filled with buffer solution, both slide rods (21) pass through the end walls of the two sleeves (19) and are slidably connected to the two sleeves (19), and both slide rods (21) are fixedly connected to the two piston plates (20).

7. The guide welding equipment for a long-length steel structure as described in claim 2, characterized in that: Both side frames (2) are fixedly connected to motors (29), and both motors (29) are fixedly connected to drive shafts (30) at their output ends. The two drive shafts (30) pass through the two side frames (2) respectively and are rotatably connected to the two side frames (2). The bottom ends of the two drive shafts (30) pass through the top walls of the two bases (3) respectively and are rotatably connected to the two bases (3). The bottom ends of the drive shafts (30) and the outside of the rotating cylinder (23) are fixedly connected to first bevel gears (28), and the two first bevel gears (28) are meshed together.

8. The guide welding equipment for a long-length steel structure as described in claim 4, characterized in that: The first end of the rotating rod (32) and the top end of the second threaded rod (34) are both fixedly connected to a second bevel gear (33), and the two second bevel gears (33) are meshed together.

9. The guide welding equipment for a long-length steel structure as described in claim 1, characterized in that: The base (3) has L-shaped support blocks (35) fixedly connected to both sides of its bottom, and top support wheels (36) are rotatably connected to the opposite side of the two L-shaped support blocks (35).

10. A guide welding device for a long-length steel structure as described in claim 1, characterized in that: The fixed frame (1) has two fixed electric slide rails (37) on both sides inside. The moving ends of the two first electric slide rails (37) are equipped with second electric slide rails (38). The moving ends of the second electric slide rails (38) are equipped with connecting frames (39). Two fixing clips (40) are fixedly connected to one side of the connecting frame (39). Hydraulic cylinders (41) are installed inside the two fixing clips (40). A connecting sleeve (42) is fixedly connected to the front side of the connecting frame (39). A welding machine (44) is fixedly connected inside the connecting sleeve (42). A fixing sleeve (43) is fixedly connected to the output end of the hydraulic cylinder (41). The working end of the welding machine (44) is fixedly connected to the fixing sleeve (43).

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