An Angle-adjustable Welding Device and Welding Method for Long-span Steel Structures

Abstract

The present invention provides a multi-angle adjustable welding device and a welding method for large-span steel structures, which relates to the technical field of welding devices. The multi-angle adjustable welding device for large-span steel structures includes a base. A cleaning component is arranged on one side of the moving box. L-shaped sliding rails are fixedly connected to the tops of both fixing plates. A lower moving plate is arranged between the two L-shaped sliding rails. An upper moving plate is arranged on the top of the lower moving plate. Two lower support wheels are rotatably connected to both ends of the lower moving plate. Two upper support wheels are rotatably connected to both ends of the upper moving plate. Positioning components are arranged at both ends of the front side of the fixed frame. The multi-angle adjustable welding device for large-span steel structures is beneficial to adjusting the welding angle of the steel structure, facilitating operation, beneficial to lifting the steel structure, quickly welding the bottom of the steel structure, saving physical strength, facilitating timely cleaning of the welding slag generated during welding, and preventing the welding slag from affecting the product quality.

Description

Technical Field

[0001] The present invention relates to a welding device, in particular to a multi-angle adjustable welding device and welding method for large-span steel structures, belonging to the technical field of welding devices. Background Technique

[0002] Steel structures are mainly composed of steel beams, steel columns, steel trusses and other components made of sections and steel plates. In steel structures, the components or parts are connected by welds, bolts or rivets. Steel structures have the characteristics of high strength, light self-weight, strong deformation ability, good toughness and high reliability. Applying steel structures in construction projects can effectively improve the performance of construction projects, save construction costs, and reduce the use of sand, stone and cement.

[0003] When welding steel structures, it is necessary to fix and support the steel structures. However, when welding large-span steel structures, due to the large volume of the steel structures, it is necessary to lift the steel structures during welding. Since the steel structures are heavy, it is laborious to lift them manually. Moreover, when welding the steel structures in different directions, it is necessary for people to move around the steel structures, which wastes time. And when lifting the steel structures manually, it is easy for the steel structures to loosen and fall off, which is somewhat dangerous. There are large errors in manual operation. After the steel structures are fixed, misalignment and deviation often occur and need to be repositioned, which not only reduces the welding efficiency, but also greatly increases the labor intensity of workers. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] The purpose of the present invention is to provide a multi-angle adjustable welding device and welding method for large-span steel structures to solve the problems in the prior art that during welding, it is necessary to lift the steel structures. Since the steel structures are heavy, it is laborious to lift them manually. Moreover, when welding the steel structures in different directions, it is necessary for people to move around the steel structures, which wastes time. And when lifting the steel structures manually, it is easy for the steel structures to loosen and fall off, which is somewhat dangerous. There are large errors in manual operation. After the steel structures are fixed, misalignment and deviation often occur and need to be repositioned.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A welding device and welding method with adjustable angles for a large-span steel structure, including a base. On both sides of the top of the base, fixing plates are fixedly connected. On one side of each of the two fixing plates, a support frame is provided. Between the two support frames, a first reciprocating lead screw is rotatably connected. The two ends of the first reciprocating lead screw respectively penetrate through the two support frames and are rotatably connected to the two support frames. A moving box is sleeved on the outer side of the first reciprocating lead screw. A welding machine is installed on one side of the moving box. A cleaning component is provided on one side of the moving box. On the top of each of the two fixing plates, an L-shaped slide rail is fixedly connected. Between the two L-shaped slide rails, a lower moving plate is provided. On the top of the lower moving plate, an upper moving plate is provided. At both ends of the lower moving plate, two lower support wheels are rotatably connected. At both ends of the upper moving plate, upper support wheels are rotatably connected. The four lower support wheels respectively penetrate through the two L-shaped slide rails and are slidably connected to the two L-shaped slide rails. On the front side of the lower moving plate, a bottom plate is fixedly connected. On the front side of the upper moving plate, a fixing frame is fixedly connected. The fixing frame is arranged on the front side of the bottom plate. At both ends of the front side of the fixing frame, positioning components are provided.

[0008] Preferably, hinge plates are hinged on both sides of the lower moving plate. The top ends of the two hinge plates are respectively hinged to both sides of the upper moving plate. On both sides of the lower moving plate, side rods are fixedly connected. On both sides of the lower moving plate, side rods are fixedly connected. On the front side of each of the two support frames, an L-shaped rod is fixedly connected. The two L-shaped rods are respectively fixedly connected to the two side rods, so that when the support frame moves, it drives the L-shaped rod to move, and the L-shaped rod drives the lower moving plate to move through the side rod.

[0009] Preferably, two second electric push rods are fixedly connected to one side of the moving box. The output ends of the two second electric push rods are fixedly connected with a connecting plate. On one side of the connecting plate, a mounting frame is fixedly connected. The welding machine is fixedly connected inside the mounting frame. A welding box is fixedly connected to the rear side of the moving box. The welding box is communicated with the welding machine.

[0010] Preferably, the cleaning component includes a first cleaning plate and a second cleaning plate. On one side inside the moving box, a threaded sleeve is fixedly connected. U-shaped grooves are respectively opened inside the two fixing plates. The two ends of the first reciprocating lead screw are respectively slidably connected inside the two U-shaped grooves. The threaded sleeve is sleeved on the outer side of the first reciprocating lead screw and is threadedly connected to the first reciprocating lead screw. On one side of each of the two support frames, an extension plate is fixedly connected. On both sides between the two extension plates, guide rods are fixedly connected. The two guide rods respectively penetrate through the moving box and are slidably connected to the moving box to limit the moving box and improve the stability of the moving box.

[0011] Preferably, a rotating sleeve is rotatably connected inside the other side of the moving box. Limiting plates are formed on both sides inside the rotating sleeve. Limiting grooves are formed on both sides of the first reciprocating lead screw. The two limiting plates are respectively slidably connected inside the two limiting grooves. A first bevel gear is fixedly connected to the side of the rotating sleeve close to the inside of the moving box. A rotating shaft is rotatably connected inside one side of the moving box. The first cleaning plate is fixedly connected to one end of the rotating shaft. A second bevel gear is fixedly connected to the other end of the rotating shaft. The first bevel gear is meshed with the second bevel gear, so that when the rotating sleeve rotates, it drives the first bevel gear to rotate, and drives the second bevel gear to rotate through the first bevel gear.

[0012] Preferably, a sleeve is rotatably connected to the top end inside the moving box. A third bevel gear is fixedly connected to the bottom end of the sleeve. The third bevel gear is meshed with the second bevel gear. A rotating rod is slidably connected inside the sleeve. Vertical grooves are formed on both sides of the rotating rod. The two vertical grooves are adapted to the sleeve. Two first electric push rods are fixedly connected to one side of the moving box. The output ends of the two first electric push rods are fixedly connected with a lifting frame. The rotating rod penetrates through the lifting frame and is rotatably connected with the lifting frame. A second cleaning plate is fixedly connected to the top end of the rotating rod, and the sleeve drives the rotating rod and the second cleaning plate to rotate.

[0013] Preferably, the positioning assembly includes two clamping plates. Two guiding sliding rails are fixedly connected to the front side of the fixed frame. Second threaded rods are rotatably connected inside the two guiding sliding rails. Moving blocks are slidably connected to both ends inside the two second threaded rods. The thread directions of both ends of the two second threaded rods are opposite. The two second threaded rods respectively penetrate through the four moving blocks and are threadedly connected with the four moving blocks. The upper and lower sides of the two clamping plates are respectively fixedly connected with the four moving blocks. The two second threaded rods respectively penetrate through one end of the two guiding sliding rails and are rotatably connected with the two guiding sliding rails. Synchronous wheels are fixedly connected to one end of the two guiding sliding rails. A synchronous belt is tensioned and sleeved outside the two synchronous wheels. The two second threaded rods are driven through the synchronous wheels and the synchronous belt. A clamping plate is fixedly connected to the top of the front side of the fixed frame, which is beneficial to hanging and supporting the steel structure.

[0014] Preferably, fixed sleeves are fixedly connected to both ends of the top of the base. Rotating sleeves are rotatably connected inside the two fixed sleeves. First threaded rods are slidably connected inside the two rotating sleeves. Guiding grooves are formed on both sides inside the two rotating sleeves. Sliders are fixedly connected to both sides of the bottom ends of the two first threaded rods. The two sliders are respectively slidably connected inside the two guiding grooves and are slidably connected with the two guiding grooves. One-way bearings are fixedly connected to the top ends inside the two fixed sleeves. Threaded rings are fixedly connected inside the two one-way bearings. The two first threaded rods respectively penetrate through the two threaded rings and are threadedly connected with the two threaded rings, so that the first threaded rod is limited when rotating forward and backward respectively.

[0015] Preferably, sliding sleeves are fixedly connected to the front, back, both sides of the two ends of the top of the base. Slide bars are slidably connected inside the four sliding sleeves. Springs are arranged inside the four sliding sleeves. Two ends of the springs are fixedly connected to the sliding sleeves and the slide bars respectively to support the slide bars and the support frame.

[0016] Preferably, a fourth bevel gear is fixedly connected to the top end of one of the first threaded rods. One end of the first reciprocating lead screw extending outside the support frame is fixedly connected to a fifth bevel gear. The fourth bevel gear and the fifth bevel gear are meshed. Base frames are fixedly connected to both sides of the bottom of the base. A reversible motor is fixedly connected to one side of the bottom of the base. The output end of the reversible motor is fixedly connected to the rotating sleeve.

[0017] The present invention provides a welding device and a welding method for multi-angle adjustable large-span steel structures, and the beneficial effects thereof are as follows:

[0018] 1. For the welding device and the welding method for multi-angle adjustable large-span steel structures, by placing the steel structure in front of the fixed frame, and making the top of the steel structure be clamped by the clamping plate. At the same time, the steel structure is placed on the top of the bottom plate, and the bottom plate supports the steel structure. Since a motor is installed on one side of the guiding slide rail, the output end of the motor is connected to the second threaded rod. By starting the motor to drive the second threaded rod to rotate, and synchronously driving the two second threaded rods through two synchronous pulleys and a synchronous belt, so that the two second threaded rods drive the four moving blocks to move relatively inside the guiding slide rail, and drive the two clamping plates to move relatively, so that the two clamping plates fix and limit the steel structure, which is convenient for welding the steel structure.

[0019] 2. The multi-angle adjustable welding device and welding method for the long-span steel structure. When the first threaded rod rises, it drives the support frame to rise. When the support frame rises, it drives two L-shaped rods to rise. When the two L-shaped rods rise, they drive two side rods to rise. When the two side rods rise, they drive the lower moving plate to rise. When the lower moving plate rises, it drives multiple lower support wheels on both sides to slide inside the two L-shaped sliding rails, limiting the lower moving plate. When the lower moving plate rises, it drives the bottom plate to rise, so that the bottom plate drives the steel structure to rise, lifting the steel structure. At the same time, when the lower moving plate rises, it drives two hinge plates to rise, so that the two hinge plates push the upper moving plate to rise. When the upper moving plate rises, it drives two upper support wheels to slide inside the two L-shaped sliding rails. When the two upper support wheels move to the bent part at the top of the L-shaped sliding rail, the upper support wheels rotate backward along the L-shaped sliding rail inside the L-shaped sliding rail. When the upper support wheels move, they drive the upper moving plate to move accordingly, and at the same time drive the fixed frame to deflect. When the fixed frame deflects, it drives two second threaded rods to move. When the two second threaded rods move, they drive the clamping plate to deflect, and then drive the steel structure to deflect, flipping the steel structure, which is beneficial to adjusting the welding angle of the steel structure, facilitating operation, beneficial to lifting the steel structure, quickly welding the bottom of the steel structure, and saving physical strength.

[0020] 3. The multi-angle adjustable welding device and welding method for the long-span steel structure. When the limiting plate rotates, it drives the rotating sleeve to rotate. When the rotating sleeve rotates, it drives the first bevel gear to rotate. Then, when the first bevel gear rotates, it drives the second bevel gear and the third bevel gear to rotate. The rotation of the second bevel gear drives the first cleaning plate to rotate, which is beneficial to cleaning the steel structure. When the third bevel gear rotates, it drives the sleeve to rotate, and the sleeve drives the rotating rod and the second cleaning plate to rotate. At the same time, when the first electric push rod starts, it drives the lifting frame and the second cleaning plate to rise, so that the lifting frame drives the rotating rod to move upward inside the sleeve. When the sleeve drives the rotating rod and the second cleaning plate to rotate, it cleans the steel structure, facilitating the timely cleaning of the welding slag generated during welding and preventing the welding slag from affecting the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 is the front view schematic diagram of the present invention;

[0023] Figure 3 is the structural schematic diagram of the base of the present invention;

[0024] Figure 4 is the structural schematic diagram of the support frame of the present invention;

[0025] Figure 5 is the structural schematic diagram of the extension plate of the present invention;

[0026] Figure 6 Structural schematic diagram of the fixing sleeve of the present invention;

[0027] Figure 7 Structural schematic diagram of the first reciprocating lead screw of the present invention;

[0028] Figure 8 Structural schematic diagram of the moving box of the present invention;

[0029] Figure 9 Structural schematic diagram of the rotating sleeve of the present invention;

[0030] Figure 10 Structural schematic diagram of the rotating sleeve of the present invention;

[0031] Figure 11 Structural schematic diagram of the rotating rod of the present invention;

[0032] Figure 12 Structural schematic diagram of the lower moving plate of the present invention;

[0033] Figure 13 Structural schematic diagram of the clamping plate of the present invention;

[0034] Figure 14 Structural schematic diagram of the bottom plate of the present invention;

[0035] Figure 15 Structural schematic diagram of the fixing frame of the present invention.

[0036] In the figure: 1, base; 2, fixing plate; 3, support frame; 4, first reciprocating lead screw; 5, moving box; 6, threaded sleeve; 7, rotating sleeve; 8, limiting plate; 9, limiting groove; 10, first bevel gear; 11, second bevel gear; 12, rotating shaft; 13, first cleaning plate; 14, sleeve; 15, third bevel gear; 16, rotating rod; 17, vertical groove; 19, second cleaning plate; 20, first electric push rod; 21, lifting frame; 22, welding box; 23, second electric push rod; 24, connecting plate; 25, mounting frame; 26, welding machine; 27, fixing sleeve; 28, rotating sleeve; 29, first threaded rod; 30, slider; 31, guiding groove; 32, one-way bearing; 33, threaded ring; 34, fourth bevel gear; 35, fifth bevel gear; 36, chassis; 37, positive and negative motor; 38, L-shaped slide rail; 39, lower moving plate; 40, lower supporting wheel; 41, upper moving plate; 42, upper supporting wheel; 43, side rod; 44, fixing frame; 45, bottom plate; 47, hinge plate; 48, guiding slide rail; 49, second threaded rod; 50, moving block; 51, clamping plate; 52, synchronous pulley; 53, synchronous belt; 54, sliding sleeve; 55, sliding rod; 56, spring; 57, clamping plate; 58, L-shaped rod; 59, extension plate; 61, guiding rod. Detailed implementation manners

[0037] An embodiment of the present invention provides a welding device and a welding method with multi-angle adjustable for large-span steel structures.

[0038] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 and Figure 15 , including a base 1. Both sides of the top of the base 1 are fixedly connected with fixing plates 2. On one side of each of the two fixing plates 2, there is a support frame 3. Between the two support frames 3, a first reciprocating lead screw 4 is rotatably connected. Both ends of the first reciprocating lead screw 4 respectively penetrate through the two support frames 3 and are rotatably connected with the two support frames 3. A moving box 5 is sleeved on the outer side of the first reciprocating lead screw 4. A welding machine 26 is installed on one side of the moving box 5. A cleaning component is arranged on one side of the moving box 5. On the top of each of the two fixing plates 2, an L-shaped slide rail 38 is fixedly connected. Between the two L-shaped slide rails 38, there is a lower moving plate 39. On the top of the lower moving plate 39, there is an upper moving plate 41. At both ends of the lower moving plate 39, two lower support wheels 40 are rotatably connected. At both ends of the upper moving plate 41, two upper support wheels 42 are rotatably connected. The four lower support wheels 40 respectively penetrate through the two L-shaped slide rails 38 and are slidably connected with the two L-shaped slide rails 38. On the front side of the lower moving plate 39, a bottom plate 45 is fixedly connected. On the front side of the upper moving plate 41, a fixing frame 44 is fixedly connected. The fixing frame 44 is arranged on the front side of the bottom plate 45. At both ends of the front side of the fixing frame 44, positioning components are arranged.

[0039] On both sides of the lower moving plate 39, hinge plates 47 are hinged. The top ends of the two hinge plates 47 are respectively hinged with both sides of the upper moving plate 41. On both sides of the lower moving plate 39, side rods 43 are fixedly connected. On both sides of the lower moving plate 39, side rods 43 are fixedly connected. On the front side of each of the two support frames 3, an L-shaped rod 58 is fixedly connected. The two L-shaped rods 58 are respectively fixedly connected with the two side rods 43. When the support frame 3 moves, it drives the L-shaped rod 58 to move, so that the L-shaped rod 58 drives the lower moving plate 39 to move through the side rod 43. On one side of the moving box 5, two second electric push rods 23 are fixedly connected. The output ends of the two second electric push rods 23 are fixedly connected with a connecting plate 24. On one side of the connecting plate 24, an installation frame 25 is fixedly connected. The welding machine 26 is fixedly connected inside the installation frame 25. On the rear side of the moving box 5, a welding box 22 is fixedly connected. The welding box 22 is communicated with the welding machine 26.

[0040] The cleaning component includes a first cleaning plate 13 and a second cleaning plate 19. One side inside the moving box 5 is fixedly connected with a threaded sleeve 6. U-shaped grooves are formed inside both fixing plates 2. Two ends of the first reciprocating lead screw 4 are respectively slidably connected inside the two U-shaped grooves. The threaded sleeve 6 is sleeved outside the first reciprocating lead screw 4 and is threadedly connected with the first reciprocating lead screw 4. Extension plates 59 are fixedly connected to one side of both support frames 3. Guide rods 61 are fixedly connected to both sides between the two extension plates 59. The two guide rods 61 respectively penetrate through the moving box 5 and are slidably connected with the moving box 5 to limit the moving box 5 and improve the stability of the moving box 5. A rotating sleeve 7 is rotatably connected inside the other side of the moving box 5. Limiting plates 8 are formed on both sides inside the rotating sleeve 7. Limiting grooves 9 are formed on both sides of the first reciprocating lead screw 4. The two limiting plates 8 are respectively slidably connected inside the two limiting grooves 9. A first bevel gear 10 is fixedly connected to the side of the rotating sleeve 7 close to the inside of the moving box 5. A rotating shaft 12 is rotatably connected inside one side of the moving box 5. The first cleaning plate 13 is fixedly connected to one end of the rotating shaft 12. A second bevel gear 11 is fixedly connected to the other end of the rotating shaft 12. The first bevel gear 10 is meshed and connected with the second bevel gear 11, so that when the rotating sleeve 7 rotates, it drives the first bevel gear 10 to rotate, and drives the second bevel gear 11 to rotate through the first bevel gear 10. A sleeve 14 is rotatably connected to the top end inside the moving box 5. A third bevel gear 15 is fixedly connected to the bottom end of the sleeve 14. The third bevel gear 15 is meshed and connected with the second bevel gear 11. A rotating rod 16 is slidably connected inside the sleeve 14. Vertical grooves 17 are formed on both sides of the rotating rod 16. The two vertical grooves 17 are adapted to the sleeve 14. Two first electric push rods 20 are fixedly connected to one side of the moving box 5. Lifting frames 21 are fixedly connected to the output ends of the two first electric push rods 20. The rotating rod 16 penetrates through the lifting frame 21 and is rotatably connected with the lifting frame 21. A second cleaning plate 19 is fixedly connected to the top end of the rotating rod 16, and the rotating rod 16 and the second cleaning plate 19 are driven to rotate through the sleeve 14.

[0041] The positioning component includes two clamping plates 51. Two guide rails 48 are fixedly connected to the front side of the fixed frame 44. Second threaded rods 49 are rotatably connected inside both guide rails 48. Moving blocks 50 are slidably connected to both ends inside the two second threaded rods 49. The threading directions of both ends of the two second threaded rods 49 are opposite. The two second threaded rods 49 respectively penetrate through the four moving blocks 50 and are threadedly connected with the four moving blocks 50. The two clamping plates 51 are respectively fixedly connected to the upper and lower sides of the four moving blocks 50. The two second threaded rods 49 respectively penetrate through one end of the two guide rails 48 and are rotatably connected with the two guide rails 48. Synchronous wheels 52 are fixedly connected to one end of both guide rails 48. A synchronous belt 53 is tensioned and sleeved outside the two synchronous wheels 52 to drive the two second threaded rods 49 through the synchronous wheels 52 and the synchronous belt 53. A clamping plate 57 is fixedly connected to the top of the front side of the fixed frame 44, which is beneficial for hanging and supporting the steel structure.

[0042] Both ends of the top of the base 1 are fixedly connected with fixing sleeves 27. Rotating sleeves 28 are rotatably connected inside the two fixing sleeves 27. A first threaded rod 29 is slidably connected inside the two rotating sleeves 28. Guide grooves 31 are formed on both sides inside the two rotating sleeves 28. Sliders 30 are fixedly connected to both sides of the bottom ends of the two first threaded rods 29. The two sliders 30 are respectively slidably connected inside the two guide grooves 31 and are slidably connected with the two guide grooves 31. One-way bearings 32 are fixedly connected inside the tops of the two fixing sleeves 27. Threaded rings 33 are fixedly connected inside the two one-way bearings 32. The two first threaded rods 29 respectively penetrate through the two threaded rings 33 and are threadedly connected with the two threaded rings 33, so that the first threaded rod 29 is limited when rotating forward and backward respectively. Sliding sleeves 54 are fixedly connected to the front and rear sides of both ends of the top of the base 1. Slide rods 55 are slidably connected inside the four sliding sleeves 54. Springs 56 are arranged inside the four sliding sleeves 54. The two ends of the spring 56 are respectively fixedly connected with the sliding sleeve 54 and the slide rod 55 to support the slide rod 55 and the support frame 3. The top end of one of the first threaded rods 29 is fixedly connected with a fourth bevel gear 34. One end of the first reciprocating screw rod 4 extending to the outside of the support frame 3 is fixedly connected with a fifth bevel gear 35. The fourth bevel gear 34 and the fifth bevel gear 35 are meshed and connected. Base frames 36 are fixedly connected to both sides of the bottom of the base 1. A reversible motor 37 is fixedly connected to one side of the bottom of the base 1. The output end of the reversible motor 37 is fixedly connected with the rotating sleeve 28.

[0043] Specifically, by placing the steel structure in front of the fixing frame 44 and making the top of the steel structure be clamped with the clamping plate 57. At the same time, the steel structure is placed on the top of the bottom plate 45, so that the bottom plate 45 supports the steel structure. Since a motor is installed on one side of the guide rail 48, the output end of the motor is connected with the second threaded rod 49. By starting the motor to drive the second threaded rod 49 to rotate, and synchronously driving the two second threaded rods 49 through the two synchronous pulleys 52 and the synchronous belt 53, so that the two second threaded rods 49 drive the four moving blocks 50 to move relatively inside the guide rail 48 and drive the two clamping plates 51 to move relatively, so that the two clamping plates 51 fix and limit the steel structure, which is convenient for welding the steel structure.

[0044] The forward and reverse motor 37 starts in the forward direction to drive the two rotating sleeves 28 to rotate. Then, the rotating sleeve 28 limits the slider 30 through the guide groove 31, thereby driving the first threaded rod 29 to rotate. Then, when the first threaded rod 29 rotates forward, the one-way bearing 32 limits the threaded ring 33, thereby limiting the first threaded rod 29 through the threaded ring 33. When the first threaded rod 29 rotates in the threaded ring 33, it rises inside the threaded ring 33. When the first threaded rod 29 rises, it drives the support frame 3 to rise. When the support frame 3 rises, it drives the two L-shaped rods 58 to rise. When the two L-shaped rods 58 rise, they drive the two side rods 43 to rise. When the two side rods 43 rise, they drive the lower moving plate 39 to rise. When the lower moving plate 39 rises, it drives the multiple lower support wheels 40 on both sides to slide inside the two L-shaped slide rails 38, limiting the lower moving plate 39. When the lower moving plate 39 rises, it drives the bottom plate 45 to rise, so that the bottom plate 45 drives the steel structure to rise, lifting the steel structure. At the same time, when the lower moving plate 39 rises, it drives the two hinge plates 47 to rise, so that the two hinge plates 47 push the upper moving plate 41 to rise. When the upper moving plate 41 rises, it drives the two upper support wheels 42 to slide inside the two L-shaped slide rails 38. When the two upper support wheels 42 move to the bent part at the top of the L-shaped slide rail 38, the upper support wheels 42 rotate backward along the L-shaped slide rail 38 inside the L-shaped slide rail 38. When the upper support wheels 42 move, they drive the upper moving plate 41 to move accordingly, and at the same time drive the fixed frame 44 to deflect. When the fixed frame 44 deflects, it drives the two second threaded rods 49 to move. When the two second threaded rods 49 move, they drive the clamping plate 51 to deflect, and then drive the steel structure to deflect, causing the steel structure to flip, which is beneficial to adjusting the welding angle of the steel structure, facilitating operation, beneficial to lifting the steel structure, quickly welding the bottom of the steel structure, and saving physical strength.

[0045] The forward and reverse motor 37 starts to drive the support frame 3 to rise when starting, and the support frame 3 drives the first reciprocating lead screw 4 to rise when rising. When the first reciprocating lead screw 4 rises, it drives the moving box 5 and the welding box 22 to rise. When the moving box 5 rises, it drives the second electric push rod 23 to move. The second electric push rod 23 drives the connecting plate 24 and the mounting bracket 25 to move, so that the mounting bracket 25 drives the welding machine 26 to move. By starting the second electric push rod 23, it drives the mounting bracket 25 and the welding machine 26 to rise, so that the welding machine 26 welds the steel structure flipped to the top, and the welding machine 26 can be taken out from inside the mounting bracket 25, enabling the staff to weld the steel structure with the welding machine 26, which is convenient to pick up and operate.

[0046] When the first threaded rod 29 rotates, it drives the fourth bevel gear 34 to rotate. The fourth bevel gear 34 drives the first reciprocating lead screw 4 to rotate. When the first reciprocating lead screw 4 rotates, the first reciprocating lead screw 4 drives the threaded sleeve 6 to move. Then, the threaded sleeve 6 drives the moving box 5 to move, and the moving box 5 drives the welding box 22 and the welding machine 26 to move, facilitating welding.

[0047] When the first reciprocating lead screw 4 rotates, the two limit plates 8 are limited by the limit grooves 9 formed on both sides of the first reciprocating lead screw 4, so that the limit plates 8 drive the rotating sleeve 7 to rotate when rotating, and the rotating sleeve 7 drives the first bevel gear 10 to rotate when rotating. Then, the first bevel gear 10 drives the second bevel gear 11 and the third bevel gear 15 to rotate when rotating. The rotation of the second bevel gear 11 drives the first cleaning plate 13 to rotate, which is beneficial to cleaning the steel structure. When the third bevel gear 15 rotates, it drives the sleeve 14 to rotate, and the sleeve 14 drives the rotating rod 16 and the second cleaning plate 19 to rotate. At the same time, when the first electric push rod 20 is started, it drives the lifting frame 21 and the second cleaning plate 19 to rise, so that the lifting frame 21 drives the rotating rod 16 to move upward inside the sleeve 14. When the sleeve 14 drives the rotating rod 16 and the second cleaning plate 19 to rotate, the steel structure is cleaned, which is convenient for timely cleaning of the welding slag generated during welding and prevents the welding slag from affecting the product quality.

[0048] A multi-angle adjustable welding method for large-span steel structures specifically includes the following steps:

[0049] Step 1: Place the steel structure in front of the fixed frame 44, and make the top of the steel structure be clamped with the clamping plate 57. At the same time, place the steel structure on the top of the bottom plate 45, and the bottom plate 45 supports the steel structure. Since a motor is installed on one side of the guiding slide rail 48, the output end of the motor is connected to the second threaded rod 49. Starting the motor drives the second threaded rod 49 to rotate, and the two second threaded rods 49 are synchronously driven by two synchronous wheels 52 and a synchronous belt 53. Thus, the two second threaded rods 49 drive the four moving blocks 50 to move relatively inside the guiding slide rail 48, and drive the two clamping plates 51 to move relatively, so that the two clamping plates 51 fix and limit the steel structure, which is convenient for welding the steel structure.

[0050] Step 2: When the upper moving plate 41 rises, it drives the two upper supporting wheels 42 to slide inside the two L-shaped slide rails 38. When the two upper supporting wheels 42 move to the bent part at the top of the L-shaped slide rails 38, the upper supporting wheels 42 rotate backward along the L-shaped slide rails 38 inside the L-shaped slide rails 38. When the upper supporting wheels 42 move, they drive the upper moving plate 41 to move accordingly, and at the same time drive the fixed frame 44 to deflect. When the fixed frame 44 deflects, it drives the two second threaded rods 49 to move. When the two second threaded rods 49 move, they drive the clamping plates 51 to deflect, and then drive the steel structure to deflect, so that the steel structure flips, which is beneficial to adjusting the welding angle of the steel structure.

[0051] Step 3: When the moving box 5 rises, it drives the second electric push rod 23 to move. The second electric push rod 23 drives the connecting plate 24 and the mounting bracket 25 to move, so that the mounting bracket 25 drives the welding machine 26 to move. By starting the second electric push rod 23, the mounting bracket 25 and the welding machine 26 are driven to rise, so that the welding machine 26 welds the steel structure flipped to the top. Moreover, the welding machine 26 can be taken out from inside the mounting bracket 25, enabling the staff to weld the steel structure with the welding machine 26, which is convenient to take and operate.

[0052] Step 4: The rotation of the second bevel gear 11 drives the rotation of the first cleaning plate 13, which is beneficial to cleaning the steel structure. When the third bevel gear 15 rotates, it drives the sleeve 14 to rotate, and the sleeve 14 drives the rotating rod 16 and the second cleaning plate 19 to rotate. At the same time, when the first electric push rod 20 starts, it drives the lifting frame 21 and the second cleaning plate 19 to rise, so that the lifting frame 21 drives the rotating rod 16 to move upward inside the sleeve 14. When the sleeve 14 drives the rotating rod 16 and the second cleaning plate 19 to rotate, the steel structure is cleaned, which is convenient for timely cleaning of the welding slag generated during welding and prevents the welding slag from affecting the product quality.

[0053] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-angle adjustable welding device for a large-span steel structure, comprising a base (1), characterized in that: Both sides of the top of the base (1) are fixedly connected to fixed plates (2), one side of the two fixed plates (2) is provided with a support frame (3), a first reciprocating screw rod (4) is rotatably connected between the two support frames (3), the two ends of the first reciprocating screw rod (4) respectively penetrate the two support frames (3) and are rotatably connected to the two support frames (3), a moving box (5) is sleeved on the outside of the first reciprocating screw rod (4), a welding machine (26) is installed on one side of the moving box (5), a cleaning component is provided on one side of the moving box (5), the cleaning component comprises a first cleaning plate (13) and a second cleaning plate (19), the other side of the moving box (5) is rotatably connected to a rotating sleeve (7), two internal parts of the rotating sleeve (7) A limiting plate (8) is formed on both sides of the first reciprocating screw rod (4), limiting grooves (9) are provided on both sides of the first reciprocating screw rod (4), and the two limiting plates (8) are slidably connected to the inside of the two limiting grooves (9), respectively; a first bevel gear (10) is fixedly connected to the side of the rotating sleeve (7) close to the inside of the moving box (5), and a rotating shaft (12) is rotatably connected to the inside of one side of the moving box (5); the first cleaning plate (13) is fixedly connected to one end of the rotating shaft (12), and the other end of the rotating shaft (12) is fixedly connected to the second bevel gear (11); the first bevel gear (10) is meshedly connected to the second bevel gear (11); a sleeve (14) is rotatably connected to the top of the moving box (5), and the bottom end of the sleeve (14) is fixedly connected to the first bevel gear (11). The third bevel gear (15) is meshedly connected with the second bevel gear (11); a rotating rod (16) is slidably connected inside the sleeve (14); vertical grooves (17) are provided on both sides of the rotating rod (16); the two vertical grooves (17) are adapted to the sleeve (14); two first electric push rods (20) are fixedly connected to one side of the moving box (5); the output ends of the two first electric push rods (20) are fixedly connected to a lifting frame (21); the rotating rod (16) passes through the lifting frame (21) and is rotatably connected to the lifting frame (21); the top of the rotating rod (16) is fixedly connected to a second cleaning plate (19); the tops of the two fixed plates (2) are fixedly connected to an L-shaped slide rail (38); A lower movable plate (39) is arranged between the two L-shaped slide rails (38), an upper movable plate (41) is arranged on the top of the lower movable plate (39), two lower support wheels (40) are rotatably connected to both ends of the lower movable plate (39), upper support wheels (42) are rotatably connected to both ends of the upper movable plate (41), the four lower support wheels (40) respectively penetrate the two L-shaped slide rails (38) and are slidably connected to the two L-shaped slide rails (38), a bottom plate (45) is fixedly connected to the front side of the lower movable plate (39), a fixing frame (44) is fixedly connected to the front side of the upper movable plate (41), the fixing frame (44) is arranged on the front side of the bottom plate (45), and positioning components are arranged on both ends of the front side of the fixing frame (44).

2. The multi-angle adjustable welding device for a large-span steel structure according to claim 1 is characterized in that: Both sides of the lower movable plate (39) are hinged with hinged plates (47), the top ends of the two hinged plates (47) are hinged with both sides of the upper movable plate (41), both sides of the lower movable plate (39) are fixedly connected with side rods (43), both sides of the lower movable plate (39) are fixedly connected with side rods (43), the front sides of the two support frames (3) are fixedly connected with L-shaped rods (58), and the two L-shaped rods (58) are fixedly connected with the two side rods (43), respectively.

3. The multi-angle adjustable welding device for a large-span steel structure according to claim 2 is characterized in that: Two second electric push rods (23) are fixedly connected to one side of the moving box (5); output ends of the two second electric push rods (23) are fixedly connected to a connecting plate (24); one side of the connecting plate (24) is fixedly connected to a mounting frame (25); the welding machine (26) is fixedly connected to the inside of the mounting frame (25); a welding box (22) is fixedly connected to the rear side of the moving box (5); and the welding box (22) is in communication with the welding machine (26).

4. The multi-angle adjustable welding device for a large-span steel structure according to claim 3 is characterized in that: A threaded sleeve (6) is fixedly connected to one side of the movable box (5), a U-shaped groove is provided inside the two fixed plates (2), two ends of the first reciprocating screw rod (4) are respectively slidably connected to the inside of the two U-shaped grooves, the threaded sleeve (6) is sleeved on the outside of the first reciprocating screw rod (4) and is threadedly connected to the first reciprocating screw rod (4), one side of the two support frames (3) are fixedly connected to an extension plate (59), and guide rods (61) are fixedly connected on both sides between the two extension plates (59), and the two guide rods (61) respectively penetrate the movable box (5) and are slidably connected to the movable box (5).

5. The multi-angle adjustable welding device for a large-span steel structure according to claim 4 is characterized in that: The positioning assembly comprises two clamping plates (51), the front side of the fixing frame (44) is fixedly connected to two guide rails (48), the two guide rails (48) are rotatably connected to the inside of the two guide rails (48), the two second threaded rods (49) are slidably connected to moving blocks (50) at both ends, the thread directions of the two ends of the two second threaded rods (49) are arranged to be opposite, the two second threaded rods (49) respectively penetrate the four moving blocks (50) and are threadedly connected to the four moving blocks (50), the upper and lower sides of the two clamping plates (51) are respectively fixedly connected to the four moving blocks (50), the two second threaded rods (49) respectively penetrate one end of the two guide rails (48) and are rotatably connected to the two guide rails (48), one end of the two guide rails (48) are fixedly connected to a synchronous wheel (52), the outer tensioning sleeves of the two synchronous wheels (52) are provided with a synchronous belt (53), and the top of the front side of the fixing frame (44) is fixedly connected to a clamping plate (57).

6. The multi-angle adjustable welding device for a large-span steel structure according to claim 5, characterized in that: Both ends of the top of the base (1) are fixedly connected with fixed sleeves (27), the interior of the two fixed sleeves (27) is rotatably connected with a rotating sleeve (28), the interior of the two rotating sleeves (28) is slidably connected with a first threaded rod (29), both sides of the interior of the two rotating sleeves (28) are provided with guide grooves (31), both sides of the bottom of the two first threaded rods (29) are fixedly connected with sliders (30), the two sliders (30) are respectively slidably connected to the interior of the two guide grooves (31) and are slidably connected to the two guide grooves (31), the top of the two fixed sleeves (27) is fixedly connected with a one-way bearing (32), the interior of the two one-way bearings (32) is fixedly connected with a threaded ring (33), and the two first threaded rods (29) respectively penetrate the two threaded rings (33) and are threadedly connected to the two threaded rings (33).

7. The multi-angle adjustable welding device for a large-span steel structure according to claim 6, characterized in that: Both ends of the top of the base (1) are fixedly connected to sliding sleeves (54) at both front and rear sides, and four sliding sleeves (54) are slidably connected to sliding rods (55) inside. Springs (56) are arranged inside the four sliding sleeves (54), and both ends of the springs (56) are respectively fixedly connected to the sliding sleeves (54) and the sliding rods (55). A fourth bevel gear (34) is fixedly connected to the top of one of the first threaded rods (29), and a fifth bevel gear (35) is fixedly connected to one end of the first reciprocating screw rod (4) extending to the outside of the support frame (3). The fourth bevel gear (34) and the fifth bevel gear (35) are meshingly connected. Both sides of the bottom of the base (1) are fixedly connected to the base frame (36), and one side of the bottom of the base (1) is fixedly connected to a forward and reverse motor (37), and the output end of the forward and reverse motor (37) is fixedly connected to the rotating sleeve (28).

8. A multi-angle adjustable welding method for a large-span steel structure, applicable to a multi-angle adjustable welding device for a large-span steel structure as claimed in claim 7, characterized in that: The specific steps include: Step 1: placing the steel structure on the front side of the fixing frame (44), and clamping the top of the steel structure with the clamping plate (57), while placing the steel structure on the top of the bottom plate (45), so that the bottom plate (45) supports the steel structure, installing a motor on one side of the guide rail (48), connecting the output end of the motor with the second threaded rod (49), starting the motor to drive the second threaded rod (49) to rotate, and synchronously driving the two second threaded rods (49) through two synchronous wheels (52) and a synchronous belt (53), so that the two second threaded rods (49) drive the four moving blocks (50) to move relative to each other inside the guide rail (48), and drive the two clamping plates (51) to move relative to each other, so that the two clamping plates (51) fix and limit the steel structure, so as to facilitate welding of the steel structure; Step 2: When the upper movable plate (41) rises, it drives the two upper support wheels (42) to slide inside the two L-shaped slide rails (38). When the two upper support wheels (42) move to the top bend of the L-shaped slide rail (38), the upper support wheels (42) rotate backward along the L-shaped slide rail (38) inside the L-shaped slide rail (38). When the upper support wheels (42) move, the upper movable plate (41) is driven to move along, and the fixed frame (44) is driven to deflect at the same time. When the fixed frame (44) deflects, the two second threaded rods (49) are driven to move. When the two second threaded rods (49) move, the clamping plate (51) is driven to deflect, and then the steel structure is driven to deflect, so that the steel structure is turned over, which is conducive to adjusting the welding angle of the steel structure. Step 3: When the moving box (5) is rising, it drives the second electric push rod (23) to move, and the second electric push rod (23) drives the connecting plate (24) and the mounting frame (25) to move, so that the mounting frame (25) drives the welding machine (26) to move, and the second electric push rod (23) is started to drive the mounting frame (25) and the welding machine (26) to rise, so that the welding machine (26) welds the steel structure turned to the top, and the welding machine (26) can be taken out from the inside of the mounting frame (25), so that the staff can weld the steel structure through the welding machine (26), which is convenient to take and easy to operate; Step 4: The second bevel gear (11) rotates to drive the first cleaning plate (13) to rotate, which is beneficial to cleaning the steel structure. When the third bevel gear (15) rotates, it drives the sleeve (14) to rotate, and the sleeve (14) drives the rotating rod (16) and the second cleaning plate (19) to rotate. At the same time, when the first electric push rod (20) is started, it drives the lifting frame (21) and the second cleaning plate (19) to rise, so that the lifting frame (21) drives the rotating rod (16) to move upward inside the sleeve (14). When the sleeve (14) drives the rotating rod (16) and the second cleaning plate (19) to rotate, the steel structure is cleaned, which is convenient for timely cleaning of welding slag generated during welding to prevent the welding slag from affecting product quality.

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