A limiting device for welding steel structures

Abstract

This utility model relates to the field of steel structure welding and discloses a limiting device for steel structure welding, including a base plate. A fixing block is fixedly connected to the top of the base plate. A sleeve is in contact with the inner wall of the fixing block. An adjustment mechanism is provided on the outer wall of the sleeve. The adjustment mechanism includes a limiting post, which is fixedly connected to the outer wall of the sleeve. An annular groove is provided on the inner wall of the fixing block, and the inner wall of the annular groove is in contact with the outer wall of the limiting post. A sliding groove is provided on the inner wall of the fixing block to guide the left and right sliding of the limiting post. In this utility model, the rotation of the sleeve drives the turntable on the right side and the steel pipe fixed on the turntable to rotate synchronously. The limiting post is fixed on the outer wall of the sleeve and located in the annular groove, allowing the sleeve to rotate stably. The welding torch can then perform welding work on the circumferential seam of the rotating steel pipe, reducing the difficulty of welding cylindrical steel pipe materials in the circumferential direction.

Description

Technical Field

[0001] This utility model relates to the field of steel structure welding, and in particular to a limiting device for steel structure welding. Background Technology

[0002] Steel structure welding restraint structures refer to temporary or permanent auxiliary structures used in the steel structure welding process to ensure welding quality, control welding deformation, and guarantee the accuracy of welded joints. These structures help fix and restrict the position of the welded parts, ensuring the stability of the welding process and the quality of the weld.

[0003] Existing methods for limiting the position of welded components during welding typically involve using clamps to hold and fix the components to prevent deviations in the welding position. However, this method only allows welding to be performed on one side of the steel structure. When welding the other side is required, the components must be unclamped, flipped, and then re-fixed, which is cumbersome. This is especially true when welding cylindrical steel pipes in the circumferential direction, where the operation becomes even more inconvenient, increasing the difficulty of welding and reducing work efficiency. Therefore, a limiting device for steel structure welding is proposed to solve these problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a limiting device for steel structure welding, which aims to improve the problem in the prior art that "when welding the other side of the steel structure material, it is necessary to release the clamping and fixing of the welding part and flip it over before re-fixing it".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a limiting device for steel structure welding, comprising a base plate, a fixing block fixedly connected to the top of the base plate, a sleeve contacting the inner wall of the fixing block, an adjusting mechanism provided on the outer wall of the sleeve, the adjusting mechanism including a limiting post fixedly connected to the outer wall of the sleeve, an annular groove provided on the inner wall of the fixing block, the inner wall of the annular groove contacting the outer wall of the limiting post, a sliding groove provided on the inner wall of the fixing block for guiding the left and right sliding of the limiting post, a turntable fixedly connected to the right side of the sleeve, a handwheel fixedly connected to the left side of the sleeve, a fixing mechanism provided inside the sleeve, a welding torch fixedly connected to the top of the base plate, a baffle fixedly connected to the top of the base plate, and a controller fixedly connected to the top of the base plate.

[0006] Furthermore, the central axis of the annular groove coincides with the central axis of the sleeve.

[0007] Furthermore, the fixing mechanism includes a screw, which is threaded onto the inner wall of the sleeve, and a crank is fixedly connected to the left side of the screw.

[0008] Furthermore, the fixing mechanism includes a circular plate, which is fixedly connected to the right side of the screw and is disposed inside the turntable.

[0009] Furthermore, the fixing mechanism also includes semi-cylinders, which are fixedly connected to the inner wall of the turntable, and the semi-cylinders are configured in four groups.

[0010] Furthermore, the fixing mechanism also includes a moving block, which is slidably connected to the inner wall of the turntable. The surface of the moving block is in contact with the surface of the semi-cylinder, and a rubber block is fixedly connected to the end of the moving block away from the semi-cylinder.

[0011] Furthermore, the turntable is externally fitted with steel pipes.

[0012] Furthermore, the steel pipe is disposed inside the baffle, and the baffle is configured in a J-shape.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the rotation of the sleeve drives the turntable on the right side and the steel pipe fixed on the turntable to rotate synchronously. The limiting post is fixed on the outer wall of the sleeve and located in the annular groove, so the sleeve can rotate stably. With the help of the welding gun at the top of the steel pipe, the circumference of the steel pipe surface can be welded. The welding gun can weld the circumferential seam of the rotating steel pipe, which reduces the difficulty of welding cylindrical steel pipe materials in the circumferential direction.

[0014] 2. In this utility model, by rotating the crank of the fixing mechanism, the screw drives the circular plate to rotate. The steel pipe is axially fixed by the friction of the rubber block tightly against the inner wall of the steel pipe. The surface of the rubber block is provided with anti-slip texture to increase the friction between it and the inner wall of the steel pipe, so as to achieve a more stable fixing effect. Attached Figure Description

[0015] Figure 1 This is a right-side view of the overall three-dimensional structure of this utility model; Figure 2 This is a left-side view of the overall three-dimensional structure of this utility model; Figure 3 This is a three-dimensional exploded cross-sectional view of the fixing block, sleeve, and adjustment mechanism in this utility model. Figure 4 This is a three-dimensional cross-sectional view of the sleeve, turntable, and fixing mechanism in this utility model; Figure 5 This is a three-dimensional structural diagram of the fixing mechanism in this utility model.

[0016] Legend: 1. Base plate; 2. Fixing block; 3. Sleeve; 4. Limiting post; 5. Annular groove; 6. Slide groove; 7. Turntable; 8. Handwheel; 9. Adjustment mechanism; 10. Fixing mechanism; 11. Hand crank; 12. Screw; 13. Circular plate; 14. Semi-cylinder; 15. Moving block; 16. Rubber block; 17. Steel pipe; 18. Welding torch; 19. Baffle; 20. Controller. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 2 An embodiment of this utility model is provided: a limiting device for welding steel structures, including a base plate 1, a fixing block 2 that supports the adjustment mechanism 9 is fixedly connected to the top of the base plate 1, a sleeve 3 that is set to a horizontal state is contacted on the inner wall of the fixing block 2, and the adjustment mechanism 9 is provided on the outer wall of the sleeve 3.

[0019] Reference Figure 2 - Figure 4 The adjusting mechanism 9 includes a limiting post 4 with a semi-circular cross-section. The limiting post 4 is fixedly connected to the outer wall of the sleeve 3. The inner wall of the fixing block 2 is provided with an annular groove 5 for accommodating the limiting post 4. The central axis of the annular groove 5 coincides with the central axis of the sleeve 3, so that the sleeve 3 can rotate within the fixing block 2. Because the limiting post 4 is in the annular groove 5, the sleeve 3 will not slide left or right when rotating. The inner wall of the annular groove 5 is in contact with the outer wall of the limiting post 4. The inner wall of the fixing block 2 is provided with a sliding groove 6, which is used to guide the left and right sliding of the limiting post 4. The sliding groove 6 is located on the left side of the top of the annular groove 5. When the limiting post 4 moves to the top of the annular groove 5, pulling the sleeve 3 to the left will allow the limiting post 4 to enter the sliding groove 6, thereby allowing the turntable 7 on the right side of the sleeve 3 to move left and right.

[0020] Reference Figure 2 - Figure 4A turntable 7 for fixing the inner wall of the steel pipe 17 is fixedly connected to the right side of the sleeve 3. A handwheel 8 is fixedly connected to the left side of the sleeve 3. By rotating the sleeve 3 through the handwheel 8, the steel pipe 17 fixed to the outside of the turntable 7 on the right side of the sleeve 3 will rotate, which can perform welding work on the circumference of the surface of the steel pipe 17. A fixing mechanism 10 is provided inside the sleeve 3. A welding torch 18 for welding the steel pipe 17 is fixedly connected to the top of the base plate 1. A baffle 19 for shielding the strong light generated by the welding work is fixedly connected to the top of the base plate 1. A controller 20 for operating and reading welding parameters is fixedly connected to the top of the base plate 1.

[0021] Reference Figure 3 - Figure 5 The fixing mechanism 10 includes a horizontally positioned screw 12, which is threaded onto the inner wall of the sleeve 3. When the screw 12 rotates, it causes the circular plate 13 to rotate. When the screw 12 is stationary, the circular plate 13 remains stationary due to the self-locking effect of the thread, thereby fixing the position of the steel pipe 17. A crank 11 is fixedly connected to the left side of the screw 12. The fixing mechanism 10 also includes a circular plate 13, which is fixedly connected to the right side of the screw 12. When the screw 12 drives the circular plate 13 to rotate, the circular plate 13 will also move linearly in the left and right directions. The thickness of the circular plate 13 is less than the thickness of the moving block 15, so that the circular plate 13 has enough space to move left and right. The circular plate 13 is set inside the turntable 7. The fixing mechanism 10 also includes a semi-cylinder 14, which is fixedly connected to the inner wall of the turntable 7. The semi-cylinder 14 is set in four groups, and the included angle of each semi-cylinder 14 is ninety degrees.

[0022] Reference Figure 2 , Figure 4 , Figure 5 The fixing mechanism 10 also includes a sliding block 15, which is slidably connected to the inner wall of the turntable 7. The sliding direction of the sliding block 15 is the radial direction of the circular plate 13. When both semi-cylinders 14 are in contact with the sliding block 15 at the same time, the rubber block 16 is not in contact with the inner wall of the steel pipe 17. When the circular plate 13 rotates so that only one semi-cylinder 14 is in contact with the sliding block 15, the rubber block 16 moves away from the circular plate 13, thereby abutting against the inner wall of the steel pipe 17 and fixing the steel pipe 17. The end of the sliding block 15 away from the semi-cylinder 14 is fixedly connected to the rubber block 16. The surface of the rubber block 16 is provided with anti-slip texture to improve the friction with the inner wall of the steel pipe 17 and achieve a more stable fixing effect. The turntable 7 is provided with a steel pipe 17. The inner wall of the steel pipe 17 abuts against the surface of the rubber block 16. The steel pipe 17 is provided inside the baffle 19, which is J-shaped.

[0023] Working principle: In use, first, the steel pipe 17 to be welded is inserted into the inside of the turntable 7. Rotate the crank 11 of the fixing mechanism 10 to drive the screw 12 to rotate. Since the screw 12 is threadedly connected to the sleeve 3, the circular plate 13 is displaced to the right under the drive of the screw 12, forcing two adjacent sets of the four sets of semi-cylinders 14 to contact the moving block 15. At this time, the moving block 15 slides outward under the radial thrust of the circular plate 13. The anti-slip texture on the surface of the rubber block 16 at its end is tightly attached to the inner wall of the steel pipe 17. The anti-slip texture of the rubber block 16 is tightly attached to the inner wall of the steel pipe 17 with an adjustable pressure of 50-200N. The axial fixation of the steel pipe 17 is achieved through friction.

[0024] When welding is required on the circumference of the steel pipe 17, turn the handwheel 8. The handwheel 8 drives the sleeve 3 to rotate within the fixed block 2. Since the limiting post 4 is fixed on the outer wall of the sleeve 3 and located in the annular groove 5, the sleeve 3 can rotate stably. At the same time, the sleeve 3 will not slide left or right. The rotation of the sleeve 3 drives the turntable 7 on the right side and the steel pipe 17 fixed on the turntable 7 to rotate synchronously. With the help of the welding gun 18 on the top of the steel pipe 17, welding can be performed on the circumference of the steel pipe 17. The welding gun 18 can perform welding work on the circumferential seam of the rotating steel pipe 17.

[0025] During the welding process, the J-shaped baffle 19 set on the top of the base plate 1 can effectively block the strong light generated by the welding work and protect the operator's eyes. When it is necessary to remove the steel pipe 17 from the outside of the turntable 7, when the limiting post 4 moves to the top of the annular groove 5, the sleeve 3 is pulled to the left so that the limiting post 4 enters the sliding groove 6. At this time, the crank handle 11 is turned so that the screw 12 rotates relative to the inside of the sleeve 3, thereby driving the semi-cylinder 14 on the outer wall of the turntable 7 to rotate, thereby releasing the fixing effect on the steel pipe 17. Furthermore, since the sliding groove 6 restricts the rotation of the limiting post 4 on the outer wall of the sleeve 3, the sleeve 3 will not rotate synchronously when the screw 12 is rotated.

[0026] The above content is only a preferred embodiment of the present invention. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the concept of the present invention. As long as these changes do not depart from the concept of the present invention, they all fall within the protection scope of the present invention.

Claims

1. A limiting device for welding steel structures, comprising a base plate, characterized in that: A fixing block is fixedly connected to the top of the base plate, a sleeve is in contact with the inner wall of the fixing block, and an adjustment mechanism is provided on the outer wall of the sleeve. The adjustment mechanism includes a limiting post fixedly connected to the outer wall of the sleeve. An annular groove is provided on the inner wall of the fixing block, and the inner wall of the annular groove contacts the outer wall of the limiting post. A sliding groove is provided on the inner wall of the fixing block to guide the left and right sliding of the limiting post. A turntable is fixedly connected to the right side of the sleeve, and a handwheel is fixedly connected to the left side of the sleeve. A fixing mechanism is provided inside the sleeve. A welding torch is fixedly connected to the top of the base plate, a baffle is fixedly connected to the top of the base plate, and a controller is fixedly connected to the top of the base plate.

2. The limiting device for steel structure welding according to claim 1, characterized in that: The central axis of the annular groove coincides with the central axis of the sleeve.

3. The limiting device for steel structure welding according to claim 1, characterized in that: The fixing mechanism includes a screw, which is threaded onto the inner wall of the sleeve, and a crank handle is fixedly connected to the left side of the screw.

4. A limiting device for steel structure welding according to claim 3, characterized in that: The fixing mechanism includes a circular plate, which is fixedly connected to the right side of the screw and is disposed inside the turntable.

5. A limiting device for steel structure welding according to claim 4, characterized in that: The fixing mechanism also includes semi-cylinders, which are fixedly connected to the inner wall of the turntable, and the semi-cylinders are configured in four groups.

6. A limiting device for steel structure welding according to claim 5, characterized in that: The fixing mechanism also includes a moving block, which is slidably connected to the inner wall of the turntable. The surface of the moving block is in contact with the surface of the semi-cylinder, and a rubber block is fixedly connected to the end of the moving block away from the semi-cylinder.

7. A limiting device for steel structure welding according to claim 6, characterized in that: The turntable is surrounded by steel pipes.

8. A limiting device for steel structure welding according to claim 7, characterized in that: The steel pipe is installed inside the baffle, and the baffle is configured in a J-shape.

Images