Electric arc welding device for building construction steel structure

Abstract

The invention discloses an electric arc welding device for a building construction steel structure, which relates to the technical field of welding equipment and comprises a rack, a welding mechanism and two clamping and rotating mechanisms, and the welding mechanism and the two clamping and rotating mechanisms are fixedly mounted on the vertical side part of the rack. When the steel pipe welding device is used, steel pipes needing to be welded are placed in the two middle arc-shaped fixing plates correspondingly, and due to the fact that gaps are reserved between the two side arc-shaped fixing plates and the two side arc-shaped push plates, the two steel pipes can be directly placed in the middle arc-shaped fixing plates correspondingly when welding is started, and the whole steel pipes can be taken out after welding is completed; the steel pipe can be clamped by the clamping assembly by starting the pushing assembly, meanwhile, the two side arc-shaped fixing plates and the two side arc-shaped pushing plates get close to each other, a stable track is provided for rotation of the arc-shaped rotating rack and the arc-shaped rotating plate, and the position of the steel pipe is adjusted through the moving assembly; and then the two steel pipes can be driven to rotate through the rotating assembly, and welding operation can be conducted through the welding mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and specifically relates to an arc welding device for steel structures in building construction. Background Technique

[0002] In building construction, various structures made of steel pipes provide key supports for the project. The connection between steel pipes is crucial, and arc welding has become a common and effective connection method. During arc welding, the heat of the arc generated between the welding electrode and the steel pipe rapidly melts the metal at the welding part of the steel pipe and fuses them together. Through standardized arc welding operations, the steel pipes are connected to form a stable whole, meeting the requirements of building construction in terms of load-bearing capacity, stability, etc., and ensuring the quality and safety of the entire building project.

[0003] When welding steel pipes by arc welding currently, the two steel pipes need to be clamped by two clamping mechanisms respectively. In order for the steel pipes to rotate later, the clamping mechanisms are generally annular. When clamping with an annular clamping mechanism, the two steel pipes need to be inserted into the two clamping mechanisms from both ends respectively. When welding steel pipes in this way, since the distance between the two clamping mechanisms is short, it is not necessary for the steel pipes to enter the clamping mechanisms too far. However, after welding, the welded steel pipe needs to be withdrawn from one side of a certain clamping mechanism. Once the steel pipe is too long, it will affect the extraction of the welded steel pipe. At the same time, if the clamping mechanism is set to be open, although it is convenient to take out the steel pipe, the open clamping mechanism cannot stably rotate the steel pipe, thus making welding inconvenient. Therefore, we disclose an arc welding device for steel structures in building construction. Summary of the Invention

[0004] The present invention provides an arc welding device for steel structures in building construction to solve the problems raised in the background technique.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An arc welding device for steel structures in building construction, including a frame and a welding mechanism and two clamping and rotating mechanisms fixedly installed on the vertical side of the frame; The clamping and rotating mechanism includes a moving component fixedly installed on the side of the frame. A middle arc-shaped fixing plate is installed on the moving component. Both the top and bottom of the middle arc-shaped fixing plate are installed with side arc-shaped fixing plates. A gap is left between the side parts of the two side arc-shaped fixing plates that are close to each other. Two pushing components are installed on the moving component, and the two side arc-shaped fixing plates are respectively installed in cooperation with the two pushing components; An arc-shaped rotating rack is rotatably installed on the side parts of the middle arc-shaped fixing plate and the two side arc-shaped fixing plates. A rotating component for driving the arc-shaped rotating rack to rotate is installed on the moving component; Two of the pushing components are equipped with a middle arc-shaped pushing plate. Both the top and bottom of the middle arc-shaped pushing plate are equipped with side arc-shaped pushing plates. An arc-shaped rotating plate is rotatably installed on the side parts of the two side arc-shaped pushing plates and the middle arc-shaped pushing plate. Two clamping components are installed on the arc-shaped rotating rack, and the arc-shaped rotating plate is cooperatively installed with the two clamping components; A guide rod is fixedly installed on the side part of the side arc-shaped pushing plate away from the middle arc-shaped fixing plate through a mounting rod. A guide hole is formed in the side part of the side arc-shaped fixing plate, and one end of the guide rod is slidably installed in the side arc-shaped fixing plate.

[0006] As a preferred technical solution of the present invention, the moving component includes a side plate fixedly installed on the vertical side part of the frame. A moving cylinder and two telescopic rods are fixedly installed on the side part of the side plate. The moving cylinder is located between the two telescopic rods. The movable end of the moving cylinder and the telescopic ends of the two telescopic rods are all fixedly installed with connecting plates. One end of the three connecting plates away from the moving cylinder is fixedly connected to the circumferential side part of the middle arc-shaped fixing plate.

[0007] As a preferred technical solution of the present invention, the pushing component includes a fixed cylinder fixedly installed on the side part of the uppermost connecting plate or the lowermost connecting plate. The movable end of the fixed cylinder is fixedly installed with a Z-shaped rod, and the bottom end of the Z-shaped rod is fixedly connected to the annular outer side part of the middle arc-shaped pushing plate.

[0008] As a preferred technical solution of the present invention, the pushing component further includes an avoidance hole formed in the side part of the connecting plate. The middle part of the Z-shaped rod movably penetrates through the avoidance hole. A driving rack is fixedly installed at the bottom of the Z-shaped rod. A limiting plate is fixedly installed on the side part of the connecting plate. The same shaft hole is formed in the top and bottom of the limiting plate. A rotating shaft is rotatably installed in the shaft hole. A small gear meshing with the driving rack is fixedly installed at the top end of the rotating shaft. An upper bevel gear is fixedly installed at the bottom end of the rotating shaft. The upper bevel gear meshes with a lower bevel gear. A mounting gear coaxially arranged is fixedly installed on the side part of the lower bevel gear. The mounting gear is rotatably installed on the side part of the middle arc-shaped fixing plate.

[0009] As a preferred technical solution of the present invention, the pushing component further includes an arc-shaped adjusting rack meshing with the mounting gear. A T-shaped arc-shaped plate is fixedly installed on the side part of the middle arc-shaped fixing plate through an arc-shaped mounting plate. A T-shaped arc-shaped groove is formed in the inner wall of the arc-shaped adjusting rack. The T-shaped arc-shaped plate is cooperatively installed on the T-shaped arc-shaped groove. The side part of the arc-shaped adjusting rack is fixedly connected to the side part of the side arc-shaped fixing plate.

[0010] As a preferred technical solution of the present invention, the clamping assembly includes a rectangular sliding sleeve fixedly installed on the side of the arc-shaped rotating plate. A rectangular rod is slidably installed in the rectangular sliding sleeve. One end of the rectangular rod extends outside the rectangular sliding sleeve and is fixedly connected to the side of the arc-shaped rotating rack. A rectangular hole is formed at the top of the rectangular rod, and a pressing rod is slidably installed in the rectangular hole. The top end of the pressing rod is rotatably installed with a rotating rod, and the bottom end of the rotating rod is rotatably installed on the side of the rectangular sliding sleeve. A pressing plate is fixedly installed on the side of the pressing rod, and the pressing plate corresponds to the position of the arc-shaped rotating rack.

[0011] As a preferred technical solution of the present invention, the clamping assembly further includes a reset rod fixedly installed at the bottom of the rectangular rod. A reset block is slidably sleeved on the reset rod, and the side of the reset block is fixedly connected to the side of the pressing rod. A spring is sleeved on the reset rod, and the top end and the bottom end of the spring are respectively fixedly installed on the sides of the rectangular rod and the reset block close to each other.

[0012] As a preferred technical solution of the present invention, the rotating mechanism includes a motor fixedly installed on the side of the connecting plate at the middle position. The output shaft of the motor penetrates the side of the connecting plate and is fixedly installed with a driving gear. Five intermediate gears are rotatably installed on the side of the side arc-shaped fixing plate. All five intermediate gears are meshed with the arc-shaped rotating rack. The included angle formed by the central axes of two adjacent intermediate gears and the central axis of the middle arc-shaped fixing plate is 45 degrees. A side gear is meshed between two adjacent intermediate gears, and the side gear is rotatably installed on the side of the middle arc-shaped fixing plate. The driving gear is meshed with one of the intermediate gears.

[0013] As a preferred technical solution of the present invention, the welding mechanism includes an installation cylinder fixedly installed on the vertical side of the frame, and an arc welding machine is fixedly installed at the output end of the installation cylinder.

[0014] As a preferred technical solution of the present invention, two first arc-shaped T-shaped track grooves are formed on the side of the middle arc-shaped push plate away from the middle arc-shaped fixing plate. A first arc-shaped T-shaped plate is installed in cooperation with the two first arc-shaped T-shaped track grooves. One end of the two first arc-shaped T-shaped plates away from each other is respectively fixedly connected to the sides of the two side arc-shaped push plates; Second arc-shaped T-shaped track grooves are formed on both sides of the middle arc-shaped fixing plate and the two side arc-shaped fixing plates. A second arc-shaped T-shaped plate is fixedly installed on the side of the arc-shaped rotating rack, and the second arc-shaped T-shaped plate is installed in cooperation with the three second arc-shaped T-shaped track grooves; A third arc-shaped T-shaped plate is fixedly installed on the side of the arc-shaped rotating plate. Third arc-shaped T-shaped track grooves are provided on both sides of the middle arc-shaped push plate and the two side arc-shaped push plates, and the third arc-shaped T-shaped plate is installed in cooperation with the three third arc-shaped T-shaped track grooves.

[0015] Compared with the prior art, the present invention provides a steel structure arc welding device for building construction, which has the following beneficial effects: When the present invention is in use, the steel pipes to be welded are respectively placed into the two middle arc-shaped fixing plates. Since there are gaps between the two side arc-shaped fixing plates and the two side arc-shaped push plates, it is convenient to directly place the two steel pipes respectively when starting welding and to take out the overall steel pipe after welding is completed. After being placed, by starting the pushing assembly, the clamping assembly can clamp the steel pipe, and at the same time, the two side arc-shaped fixing plates and the two side arc-shaped push plates move closer to each other, respectively providing a stable track for the rotation of the arc-shaped rotating rack and the arc-shaped rotating plate. The position of the steel pipe is adjusted by the moving assembly, and then the two steel pipes can be driven to rotate by the rotating assembly, and the welding operation can be carried out by the welding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a first perspective three-dimensional schematic diagram of a steel structure arc welding device for building construction according to the present invention; Figure 2 is Figure 1 an enlarged view of a part of Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is Figure 2 an enlarged view of part B in Figure 5 is a second perspective three-dimensional schematic diagram of a steel structure arc welding device for building construction according to the present invention; Figure 6 is Figure 5 an enlarged view of part C in Figure 7 is a front view of a steel structure arc welding device for building construction according to the present invention; Figure 8 is a side view of a steel structure arc welding device for building construction according to the present invention.

[0017] In the figure: 1, frame; 2, installation cylinder; 3, side plate; 4, moving cylinder; 5, connecting plate; 6, middle arc-shaped fixing plate; 7, arc welding machine; 8, side arc-shaped pushing plate; 9, first arc-shaped T-shaped track groove; 10, middle arc-shaped pushing plate; 11, first arc-shaped T-shaped plate; 12, Z-shaped rod; 13, fixing cylinder; 14, rotating rod; 15, rectangular rod; 16, reset rod; 17, spring; 18, reset block; 19, guiding rod; 20, side arc-shaped fixing plate; 21, second arc-shaped T-shaped track groove; 22, second arc-shaped T-shaped plate; 23, pressing rod; 24, installation rod; 25, third arc-shaped T-shaped plate; 26, third arc-shaped T-shaped track groove; 27, arc-shaped rotating plate; 28, driving rack; 29, limiting plate; 30, installation gear; 31, lower bevel gear; 32, T-shaped arc-shaped plate; 33, arc-shaped adjusting rack; 34, upper bevel gear; 35, rotating shaft; 36, pinion; 37, motor; 38, intermediate gear; 39, side gear; 40, driving gear; 41, arc-shaped rotating rack; 42, rectangular sliding sleeve; 43, pressing plate. Detailed implementation mode

[0018] The present invention will be further described below in conjunction with specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the drawings is for better explanation. The structure of the present invention necessarily extends beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of this application.

[0019] Figures 1-8 This is the best embodiment of the present invention. The present invention will be further described below in conjunction with the attached Figures 1-8 drawings.

[0020] Referring to the attached Figures 1-8 drawings, the present invention discloses a steel structure arc welding device for building construction, which includes a frame 1 and a welding mechanism and two clamping and rotating mechanisms fixedly installed on the vertical side of the frame 1. The frame 1 is L-shaped.

[0021] The clamping and rotating mechanism includes a moving component fixedly installed on the side of the frame 1. A middle arc-shaped fixing plate 6 is installed on the moving component. The central angle corresponding to the middle arc-shaped fixing plate 6 is greater than 180 degrees, occupying more than half of the circumference with the rotation center as the center of the circle. Both ends of the middle arc-shaped fixing plate 6 are installed with side arc-shaped fixing plates 20. The two side arc-shaped fixing plates 20 are arranged at intervals. Two pushing components are installed on the moving component. The two side arc-shaped fixing plates 20 are respectively installed in cooperation with the two pushing components.

[0022] Arc-shaped rotating racks 41 are arranged on the sides of the middle arc-shaped fixing plate 6 and the two side arc-shaped fixing plates 20. A rotating component for driving the arc-shaped rotating rack 41 to rotate is installed on the moving component.

[0023] Two pushing components are equipped with a middle arc-shaped pushing plate 10. The central angle corresponding to the middle arc-shaped pushing plate 10 is greater than 180 degrees, and the opening directions of both the middle arc-shaped pushing plate 10 and the middle arc-shaped fixing plate 6 are away from the vertical part of the frame 1. The advantage of this setting is that there is space on the side away from the frame 1 to place the steel pipes. Both ends of the middle arc-shaped pushing plate 10 are equipped with side arc-shaped pushing plates 8. An arc-shaped rotating plate 27 is rotatably installed on the side of the middle arc-shaped pushing plate 10. Two clamping components are installed on the arc-shaped rotating rack 41, and the arc-shaped rotating plate 27 is cooperatively installed with the two clamping components.

[0024] The side of the side arc-shaped pushing plate 8 away from the middle arc-shaped fixing plate 6 is fixedly installed with a guide rod 19 through a mounting rod 24. A guide hole is opened on the side of the side arc-shaped fixing plate 20, and one end of the guide rod 19 is slidably installed in the guide hole of the side arc-shaped fixing plate 20.

[0025] With the above structure: during use, the steel pipes to be welded are respectively placed into the two middle arc-shaped fixing plates 6. Since there is a gap between the two side arc-shaped fixing plates 20 and the two side arc-shaped pushing plates 8, it is convenient to directly place the two steel pipes at the start of welding and to take out the whole after welding is completed. After placing, by starting the pushing component, the clamping component can clamp the steel pipes, and at the same time, the two side arc-shaped fixing plates 20 and the two side arc-shaped pushing plates 8 are moved closer to each other, respectively providing a stable track for the rotation of the arc-shaped rotating rack 41 and the arc-shaped rotating plate 27. The position of the steel pipes is adjusted through the moving component, and then the two steel pipes can be driven to rotate through the rotating component, and the welding operation can be carried out through the welding mechanism.

[0026] As Figure 1 shown, the moving component includes a side plate 3 fixedly installed on the vertical part of the frame 1. A moving cylinder 4 and two telescopic rods are fixedly installed on the side of the side plate 3. The moving cylinder 4 is located between the two telescopic rods. The movable end of the moving cylinder 4 and the telescopic ends of the two telescopic rods are all fixedly installed with connecting plates 5. The three connecting plates 5 are all fixedly connected to the circumferential side of the middle arc-shaped fixing plate 6.

[0027] As Figure 1 、 Figure 5 and Figure 6As shown, the pushing component includes a fixed cylinder 13 fixedly installed on the side of the uppermost connecting plate 5 or the lowermost connecting plate 5. A Z-shaped rod 12 is fixedly installed at the movable end of the fixed cylinder 13. The bottom end of the Z-shaped rod 12 is fixedly connected to the middle arc-shaped pushing plate 10. The pushing component further includes an avoidance hole opened on the side of the connecting plate 5. The middle part of the Z-shaped rod 12 movably penetrates through the avoidance hole. A driving rack 28 is fixedly installed at the bottom of the Z-shaped rod 12. A limiting plate 29 is fixedly installed on the side of the connecting plate 5. A same shaft hole is opened at the top and bottom of the limiting plate 29. A rotating shaft 35 is rotatably installed in the shaft hole. A small gear 36 meshing with the driving rack 28 is fixedly installed at the top end of the rotating shaft 35. An upper bevel gear 34 is fixedly installed at the bottom end of the rotating shaft 35. The upper bevel gear 34 meshes with a lower bevel gear 31. The lower bevel gear 31 is coaxially fixedly connected with an installation gear 30. The installation gear 30 is rotatably installed on the side of the middle arc-shaped fixing plate 6. The pushing component further includes an arc-shaped adjusting rack 33 meshing with the installation gear 30. A T-shaped arc-shaped plate 32 is fixedly installed on the side of the middle arc-shaped fixing plate 6 through an arc-shaped installation plate. A T-shaped arc-shaped groove is opened on the inner wall of the arc-shaped adjusting rack 33. The T-shaped arc-shaped plate 32 is fitted and installed in the T-shaped arc-shaped groove. The arc-shaped adjusting rack 33 is fixedly connected to the side arc-shaped fixing plate 20. The movement of the two Z-shaped rods 12 drives the movement of the two driving racks 28. The movement of the two driving racks 28 drives the rotation of the two small gears 36. The rotation of the two small gears 36 drives the rotation of the two rotating shafts 35 and the two upper bevel gears 34. The rotation of the two upper bevel gears 34 drives the rotation of the two lower bevel gears 31, so that the two installation gears 30 rotate. The rotation of the two installation gears 30 drives the two arc-shaped adjusting racks 33 to rotate on the T-shaped arc-shaped plate 32, so that the two side arc-shaped fixing plates 20 move within the notch range of the middle arc-shaped fixing plate 6 until the two side arc-shaped fixing plates 20 are evenly distributed at intervals within the notch of the middle arc-shaped fixing plate 6, which can provide a stable track for the rotation of the second arc-shaped T-shaped plate 22. At the same time, the two side arc-shaped fixing plates 20 drive the movement of the two guide rods 19. The two guide rods 19 drive the movement of the two installation rods 24. The two installation rods 24 drive the movement of the two side arc-shaped pushing plates 8, so that the two first arc-shaped T-shaped plates 11 rotate in the two first arc-shaped T-shaped track grooves 9 respectively, and further can provide a stable track for the rotation of the third arc-shaped T-shaped plate 25.

[0028] As Figure 3 and Figure 4As shown, the clamping assembly includes a rectangular sliding sleeve 42 fixedly installed on the side of the arc-shaped rotating plate 27. A rectangular rod 15 is slidably installed in the rectangular sliding sleeve 42. One end of the rectangular rod 15 extends outside the rectangular sliding sleeve 42 and is fixedly connected to the side of the arc-shaped rotating rack 41. A rectangular hole is formed at the top of the rectangular rod 15, and a pressure rod 23 is slidably installed in the rectangular hole. The inner end of the pressure rod 23 is rotatably installed with a rotating rod 14. The bottom end of the rotating rod 14 is rotatably installed on the side of the rectangular sliding sleeve 42. The rotating rod 14 is in an inclined shape that gradually approaches the rectangular rod 15 along the direction away from the pressure rod 23. A pressing plate 43 is fixedly installed on the side of the pressure rod 23, and the pressing plate 43 corresponds to the position of the arc-shaped rotating rack 41. By starting the two fixed cylinders 13 on one side, the Z-shaped rod 12 can be moved. The movement of the Z-shaped rod 12 drives the middle arc-shaped push plate 10 to move. The movement of the middle arc-shaped push plate 10 drives the arc-shaped rotating plate 27 to move through the third arc-shaped T-shaped plate 25. The movement of the arc-shaped rotating plate 27 drives the two rectangular sliding sleeves 42 to move. The movement of the two rectangular sliding sleeves 42 drives the two arc-shaped rotating racks 41 to rotate. The rotation of the two arc-shaped rotating racks 41 drives the two pressure rods 23 to approach each other, so that the two pressing plates 43 approach each other, and then the steel pipe is clamped. In this embodiment, the pressing plate 43 is an arc-shaped plate and fits the outer wall of the pipeline to be welded to ensure reliable clamping of the pipeline. When welding pipelines with different diameters, different pressing plates 43 need to be replaced.

[0029] As Figure 3 shown, the clamping assembly further includes a reset rod 16 fixedly installed at the bottom of the rectangular rod 15. A reset block 18 is slidably sleeved on the reset rod 16. The reset block 18 is fixedly connected to the pressure rod 23. A spring 17 is sleeved on the reset rod 16. The top end and the bottom end of the spring 17 are respectively fixedly installed on the rectangular rod 15 and the reset block 18. The movement of the two pressure rods 23 drives the movement of the two reset blocks 18, so that the two springs 17 are deformed. Through the arrangement of the two springs 17, it is convenient for the two pressure rods 23 to return to their original states later.

[0030] As Figure 7 and Figure 8As shown in the figure, the rotating mechanism includes a motor 37 fixedly installed on the side of the connecting plate 5 located in the middle position. The output shaft of the motor 37 penetrates through the connecting plate 5 and is fixedly installed with a driving gear 40. Five intermediate gears 38 are rotatably installed on the side of the side arc-shaped fixed plate 20. All five intermediate gears 38 are engaged with the arc-shaped rotating rack 41. The included angle formed by the central axes of every two adjacent intermediate gears 38 and the central axis of the middle arc-shaped fixed plate 6 is 45 degrees. A side gear 39 is engaged between every two adjacent intermediate gears 38. The side gear 39 is rotatably installed on the side of the middle arc-shaped fixed plate 6. The driving gear 40 is engaged with one of the intermediate gears 38. The rotation of the output shaft of the motor 37 drives the driving gear 40 to rotate. The rotation of the driving gear 40 drives one of the intermediate gears 38 to rotate. The rotation of the intermediate gear 38 drives the remaining four intermediate gears 38 to rotate through the four side gears 39, so that the arc-shaped rotating rack 41 rotates. The rotation of the arc-shaped rotating rack 41 drives the second arc-shaped T-shaped plate 22 to rotate in the three second arc-shaped T-shaped track grooves 21. Since the arc-shaped rotating rack 41 and the five intermediate gears 38 rotate simultaneously, after the arc-shaped rotating rack 41 is separated from the lower intermediate gear 38, the lower intermediate gear 38 will still keep rotating. When the top of the arc-shaped rotating rack 41 rotates from above to below, the arc-shaped rotating rack 41 will continue to be engaged with the lower intermediate gear 38 to ensure that the arc-shaped rotating rack 41 will always be engaged with at least one intermediate gear 38, so as to provide a continuous power for the arc-shaped rotating rack 41 to rotate.

[0031] As Figure 1 shown, the welding mechanism includes an installation cylinder 2 fixedly installed on the vertical part of the frame 1. The output end of the installation cylinder 2 is fixedly installed with an arc welding machine 7. By starting the installation cylinder 2, the arc welding machine 7 can be driven to move, so as to drive the arc welding machine 7 to move to the connection part of the two steel pipes. By starting the arc welding machine 7, welding can be carried out. In this embodiment, the installation cylinder 2 can also be realized by an electric cylinder to facilitate the precise control of the position of the arc welding torch 7.

[0032] As Figure 4 shown, two first arc-shaped T-shaped track grooves 9 are opened on the side of the middle arc-shaped push plate 10 away from the middle arc-shaped fixed plate 6. Two first arc-shaped T-shaped plates 11 are fitted and installed in the two first arc-shaped T-shaped track grooves 9. The mutually remote ends of the two first arc-shaped T-shaped plates 11 are respectively fixedly connected to the sides of the two side arc-shaped push plates 8. Through the arrangement of the first arc-shaped T-shaped plate 11 and the first arc-shaped T-shaped track groove 9, the side arc-shaped push plate 8 can only rotate along the middle arc-shaped push plate 10.

[0033] As Figure 3As shown in the figure, second arc-shaped T-shaped track grooves 21 are formed on both sides of the middle arc-shaped fixing plate 6 and the two side arc-shaped fixing plates 20. A second arc-shaped T-shaped plate 22 is fixedly installed on the side of the arc-shaped rotating rack 41. The second arc-shaped T-shaped plate 22 is installed in cooperation with the three second arc-shaped T-shaped track grooves 21. By rotating the second arc-shaped T-shaped plate 22 in the three second arc-shaped T-shaped track grooves 21, the rotation stability of the arc-shaped rotating rack 41 is improved.

[0034] As Figure 4 shown in the figure, a third arc-shaped T-shaped plate 25 is fixedly installed on the side of the arc-shaped rotating plate 27. Third arc-shaped T-shaped track grooves 26 are formed on both sides of the middle arc-shaped push plate 10 and the two side arc-shaped push plates 8. The third arc-shaped T-shaped plate 25 is installed in cooperation with the three third arc-shaped T-shaped track grooves 26. By rotating the third arc-shaped T-shaped plate 25 in the three third arc-shaped T-shaped track grooves 26, the rotation stability of the third arc-shaped T-shaped plate 25 is improved.

[0035] Among them, the rotation centers of the middle arc-shaped push plate 10, the third arc-shaped T-shaped plate 25, the second arc-shaped T-shaped plate 22, the first arc-shaped T-shaped plate 11, the side arc-shaped push plate 8, the arc-shaped rotating plate 27, the middle arc-shaped fixing plate 6, the side arc-shaped fixing plate 20, the arc-shaped rotating rack 41, the side arc-shaped fixing plate 20, the arc-shaped adjusting rack 33 and the T-shaped arc-shaped plate 32 are the same.

[0036] The working principle and usage process of the present invention: When in use, the steel pipes to be welded are respectively placed into the two middle arc-shaped fixing plates 6. Since there is a gap between the two side arc-shaped fixing plates 20, it is convenient to directly place the two unconnected steel pipes and take out the integrally welded steel pipes. After placing, by starting the two fixing cylinders 13 on one side, the Z-shaped rod 12 can be moved. The movement of the Z-shaped rod 12 drives the middle arc-shaped push plate 10 to move. The movement of the middle arc-shaped push plate 10 drives the arc-shaped rotating plate 27 to move through the third arc-shaped T-shaped plate 25. The movement of the arc-shaped rotating plate 27 drives the two rectangular sliding sleeves 42 to move. The movement of the two rectangular sliding sleeves 42 drives the two arc-shaped rotating racks 41 to rotate. The rotation of the two arc-shaped rotating racks 41 drives the two pressure rods 23 to approach each other, so that the two pressing plates 43 approach each other, and then the steel pipes are clamped. The movement of the two pressure rods 23 drives the two reset blocks 18 to move, so that the two springs 17 are deformed. Through the arrangement of the two springs 17, it is convenient for the two pressure rods 23 to return to their original states later; Meanwhile, the movement of the two Z-shaped rods 12 drives the movement of the two driving racks 28. The movement of the two driving racks 28 drives the rotation of the two pinions 36. The rotation of the two pinions 36 drives the rotation of the two rotating shafts 35 and the two upper bevel gears 34. The rotation of the two upper bevel gears 34 drives the rotation of the two lower bevel gears 31, thereby causing the two mounting gears 30 to rotate. The rotation of the two mounting gears 30 drives the rotation of the two arc-shaped adjusting racks 33 on the T-shaped arc plate 32, causing the two side arc-shaped fixing plates 20 to move within the notch range of the middle arc-shaped fixing plate 6 until the two side arc-shaped fixing plates 20 are evenly spaced at an equal angle around the rotation center of the middle arc-shaped fixing plate 6, providing a stable track for the rotation of the second arc-shaped T-shaped plate 22. Meanwhile, the movement of the two side arc-shaped fixing plates 20 drives the movement of the two guide rods 19. The movement of the two guide rods 19 drives the movement of the two mounting rods 24. The movement of the two mounting rods 24 drives the movement of the two side arc-shaped pushing plates 8, thereby causing the two first arc-shaped T-shaped plates 11 to rotate within the two first arc-shaped T-shaped track grooves 9 respectively, and further providing a stable track for the rotation of the third arc-shaped T-shaped plate 25; After the clamping of the two steel pipes is completed, the position of the two steel pipes is adjusted by starting the moving cylinder 4. The two telescopic rods stretch, so that the electric arc welder 7 corresponds to the connection parts of the two steel pipes. Then, the two motors 37, the mounting cylinder 2 and the electric arc welder 7 are started to perform electric arc welding; The rotation of the output shaft of the motor 37 drives the rotation of the driving gear 40. The rotation of the driving gear 40 drives the rotation of one of the intermediate gears 38. The rotation of the intermediate gear 38 drives the rotation of the remaining four intermediate gears 38 through the four side gears 39, thereby causing the arc-shaped rotating rack 41 to rotate. The rotation of the arc-shaped rotating rack 41 drives the rotation of the second arc-shaped T-shaped plate 22 within the three second arc-shaped T-shaped track grooves 21. Since the arc-shaped rotating rack 41 and the five intermediate gears 38 rotate simultaneously, after the arc-shaped rotating rack 41 separates from the lower intermediate gear 38, the lower intermediate gear 38 will still keep rotating. When the top of the arc-shaped rotating rack 41 rotates from above to below, the arc-shaped rotating rack 41 will continue to mesh with the lower intermediate gear 38, thereby providing a continuous power for the rotation of the arc-shaped rotating rack 41; The rotation of the arc-shaped rotating rack 41 drives the rotation of the two rectangular rods 15, the two rectangular sliding sleeves 42, the two pressing plates 43 and the two pressing rods 23, and further drives the rotation of the steel pipes, thereby performing rotary welding. Meanwhile, the rotation of the two rectangular sliding sleeves 42 drives the rotation of the arc-shaped rotating plate 27. The rotation of the arc-shaped rotating plate 27 drives the rotation of the third arc-shaped T-shaped plate 25 within the three third arc-shaped T-shaped track grooves 26.

[0037] The above are only the preferred embodiments of the present invention and do not limit the present invention in any other form. Any person skilled in the relevant art may make changes or modifications to equivalent embodiments using the technical content disclosed above. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An arc welding device for steel structures in building construction, characterized in that: It includes a frame (1), a welding mechanism fixedly installed on the vertical side of the frame (1), and two clamping and rotating mechanisms; The clamping and rotating mechanism includes a moving component fixedly installed on the side of the frame (1). A middle arc-shaped fixing plate (6) is installed on the moving component. Side arc-shaped fixing plates (20) are installed at the top and bottom of the middle arc-shaped fixing plate (6). A gap is left between the side parts of the two side arc-shaped fixing plates (20) that are close to each other. Two pushing components are installed on the moving component, and the two side arc-shaped fixing plates (20) are respectively installed in cooperation with the two pushing components; Arc-shaped rotating racks (41) are rotatably installed on the sides of the middle arc-shaped fixing plate (6) and the two side arc-shaped fixing plates (20). A rotating component for driving the arc-shaped rotating rack (41) to rotate is installed on the moving component; A middle arc-shaped push plate (10) is installed on the two pushing components. Side arc-shaped push plates (8) are installed at the top and bottom of the middle arc-shaped push plate (10). Arc-shaped rotating plates (27) are rotatably installed on the sides of the two side arc-shaped push plates (8) and the middle arc-shaped push plate (10). Two clamping components are installed on the arc-shaped rotating rack (41), and the arc-shaped rotating plate (27) is installed in cooperation with the two clamping components; A guide rod (19) is fixedly installed on the side of the side arc-shaped push plate (8) away from the middle arc-shaped fixing plate (6) through a mounting rod (24). A guide hole is opened on the side of the side arc-shaped fixing plate (20), and one end of the guide rod (19) is slidably installed in the side arc-shaped fixing plate (20).

2. The arc welding device for steel structures in building construction according to claim 1, wherein: The moving component includes a side plate (3) fixedly installed on the vertical side of the frame (1). A moving cylinder (4) and two telescopic rods are fixedly installed on the side of the side plate (3). The moving cylinder (4) is located between the two telescopic rods. The movable end of the moving cylinder (4) and the telescopic ends of the two telescopic rods are all fixedly installed with connecting plates (5). One end of the three connecting plates (5) away from the moving cylinder (4) is fixedly connected to the circumferential side of the middle arc-shaped fixing plate (6).

3. An arc welding device for steel structures in building construction according to claim 2, characterized in that: The pushing component includes a fixed cylinder (13) fixedly installed on the side of the uppermost connecting plate (5) or the lowermost connecting plate (5). The movable end of the fixed cylinder (13) is fixedly installed with a Z-shaped rod (12), and the bottom end of the Z-shaped rod (12) is fixedly connected to the annular outer side of the middle arc-shaped push plate (10).

4. An arc welding device for steel structures in building construction according to claim 3, characterized in that: The pushing component further includes an avoidance hole formed in the side of the connecting plate (5). The middle part of the Z-shaped rod (12) movably penetrates through the avoidance hole. A driving rack (28) is fixedly installed at the bottom of the Z-shaped rod (12). A limiting plate (29) is fixedly installed on the side of the connecting plate (5). An axial hole is formed in the top and bottom of the limiting plate (29). A rotating shaft (35) is rotatably installed in the axial hole. A small gear (36) meshing with the driving rack (28) is fixedly installed at the top end of the rotating shaft (35). An upper bevel gear (34) is fixedly installed at the bottom end of the rotating shaft (35). The upper bevel gear (34) meshes with a lower bevel gear (31). An installation gear (30) arranged coaxially is fixedly installed on the side of the lower bevel gear (31). The installation gear (30) is rotatably installed on the side of the middle arc-shaped fixing plate (6).

5. The arc welding device for steel structures in building construction according to claim 4, wherein: The pushing component further includes an arc-shaped adjusting rack (33) meshing with the installation gear (30). A T-shaped arc-shaped plate (32) is fixedly installed on the side of the middle arc-shaped fixing plate (6) through an arc-shaped installation plate. A T-shaped arc-shaped groove is formed in the inner wall of the arc-shaped adjusting rack (33). The T-shaped arc-shaped plate (32) is fitted and installed on the T-shaped arc-shaped groove. The side of the arc-shaped adjusting rack (33) is fixedly connected to the side of the side arc-shaped fixing plate (20).

6. The arc welding device for steel structures in building construction according to claim 1, wherein: The clamping component includes a rectangular sliding sleeve (42) fixedly installed on the side of the arc-shaped rotating plate (27). A rectangular rod (15) is slidably installed in the rectangular sliding sleeve (42). One end of the rectangular rod (15) extends out of the rectangular sliding sleeve (42) and is fixedly connected to the side of the arc-shaped rotating rack (41). A rectangular hole is formed in the top of the rectangular rod (15). A pressing rod (23) is slidably installed in the rectangular hole. A rotating rod (14) is rotatably installed at the top end of the pressing rod (23). The bottom end of the rotating rod (14) is rotatably installed on the side of the rectangular sliding sleeve (42). A pressing plate (43) is fixedly installed on the side of the pressing rod (23). The pressing plate (43) corresponds to the position of the arc-shaped rotating rack (41).

7. An arc welding device for steel structures in building construction according to claim 6, characterized in that: The clamping component further includes a reset rod (16) fixedly installed at the bottom of the rectangular rod (15). A reset block (18) is slidably sleeved on the reset rod (16). The side of the reset block (18) is fixedly connected to the side of the pressing rod (23). A spring (17) is sleeved on the reset rod (16). The top end and the bottom end of the spring (17) are respectively fixedly installed on the sides of the rectangular rod (15) and the reset block (18) close to each other.

8. An arc welding device for steel structures in building construction according to claim 1, characterized in that: The rotating mechanism includes a motor (37) fixedly installed on the side of the connecting plate (5) at the middle position. The output shaft of the motor (37) penetrates through the side of the connecting plate (5) and is fixedly installed with a driving gear (40). Five intermediate gears (38) are rotatably installed on the side of the side arc-shaped fixing plate (20). All five intermediate gears (38) are engaged with the arc-shaped rotating rack (41). The included angle formed by the central axes of two adjacent intermediate gears (38) and the central axis of the middle arc-shaped fixing plate (6) is 45 degrees. A side gear (39) is engaged between two adjacent intermediate gears (38). The side gear (39) is rotatably installed on the side of the middle arc-shaped fixing plate (6). The driving gear (40) is engaged with one of the intermediate gears (38).

9. The arc welding device for steel structures in building construction according to claim 1, characterized in that: The welding mechanism includes an installation cylinder (2) fixedly installed on the vertical side of the frame (1). The output end of the installation cylinder (2) is fixedly installed with an arc welding machine (7).

10. A steel structure arc welding device for building construction according to claim 1, characterized in that: Two first arc-shaped T-shaped track grooves (9) are formed on the side of the middle arc-shaped push plate (10) away from the middle arc-shaped fixing plate (6). Two first arc-shaped T-shaped plates (11) are installed in the two first arc-shaped T-shaped track grooves (9) in a matching manner. The two ends of the two first arc-shaped T-shaped plates (11) away from each other are respectively fixedly connected to the sides of the two side arc-shaped push plates (8). Second arc-shaped T-shaped track grooves (21) are formed on both sides of the middle arc-shaped fixing plate (6) and the two side arc-shaped fixing plates (20). A second arc-shaped T-shaped plate (22) is fixedly installed on the side of the arc-shaped rotating rack (41). The second arc-shaped T-shaped plate (22) is installed in the three second arc-shaped T-shaped track grooves (21) in a matching manner. A third arc-shaped T-shaped plate (25) is fixedly installed on the side of the arc-shaped rotating plate (27). Third arc-shaped T-shaped track grooves (26) are formed on both sides of the middle arc-shaped push plate (10) and the two side arc-shaped push plates (8). The third arc-shaped T-shaped plate (25) is installed in the three third arc-shaped T-shaped track grooves (26) in a matching manner.

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