Deformation control device for heavy-load workshop box-shaped steel structure welding

Abstract

The invention belongs to the technical field of steel structure construction, and particularly relates to a deformation control device for heavy-load workshop box-shaped steel structure welding, which comprises a bottom frame, the bottom frame is formed by combining two groups of first limiting rods and second limiting rods which are detachably and rotatably connected together, the two first limiting rods are rotatably connected together, and the two second limiting rods are detachably and rotatably connected together. The two second limiting rods are rotationally connected together, a steel structure is arranged between the bottom frames and comprises a horizontally-arranged first reinforcing steel bar and a vertically-arranged second reinforcing steel bar, and the first limiting rods and the second limiting rods abut against the lower surface of the first reinforcing steel bar. The device can limit and effectively control the steel bars in the horizontal direction and the vertical direction, the stability of the whole structure in the welding process and after welding is guaranteed, and a movement space generated by serious deformation is reserved, so that the influence of a single steel bar on the whole structure is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel structure construction, and particularly relates to a deformation control device for welding of a box-shaped steel structure of a heavy-load workshop. BACKGROUND

[0002] A steel structure is a structure composed of steel materials and is one of main building structure types. The structure is mainly composed of members such as steel beams, steel columns and steel trusses made of shaped steel and steel plates. When a heavy-load workshop is built, welding of a box-shaped steel structure is involved. Normal welding operation is a key step for normal engineering progress.

[0003] When welding a box-shaped steel structure of a heavy-load workshop, welding changes the internal structure of the steel locally. The steel is prone to deformation due to changes in internal stress when welding is performed from different directions. Random deformation during welding affects normal welding and the welding effect of adjacent parts. SUMMARY

[0004] Based on the technical problems existing in the background technology, the present application provides a deformation control device for welding of a box-shaped steel structure of a heavy-load workshop.

[0005] The deformation control device for welding of a box-shaped steel structure of a heavy-load workshop comprises a bottom frame composed of two groups of first limiting rods and second limiting rods combined by detachable rotary connection. Two first limiting rods are rotatably connected together, and two second limiting rods are rotatably connected together. A steel structure is arranged between the bottom frames. The steel structure comprises a horizontally arranged first steel bar and a vertically arranged second steel bar. The first limiting rods and the second limiting rods abut against the lower surface of the first steel bar.

[0006] First limiting mechanisms are arranged on the second limiting rods. The first limiting mechanism comprises a first connecting shaft arranged on the upper surface of the first steel bar. One end of the first connecting shaft is clamped to the surface of the second limiting rod, and the other ends of the two first connecting shafts are connected together through a linkage mechanism.

[0007] Second limiting mechanisms are arranged on the first limiting rods. The second limiting mechanism comprises a support shaft. One end of the support shaft is clamped to the surface of the first limiting rod, and the other end is clamped to the surface of the second steel bar.

[0008] Preferably, the first limiting structure further includes a second connecting shaft and a threaded rod. The first connecting shaft has an insertion hole. One end of the second connecting shaft is fixedly connected to an insertion shaft inserted into the insertion hole. The threaded rod is rotatably connected to the other end of the second connecting shaft. The lower end of the threaded rod is slidably sleeved with a third connecting shaft. The second limiting rod is provided with a first locking mechanism. One end of the third connecting shaft is slidably connected to the first locking mechanism.

[0009] Preferably, the first locking mechanism includes a linkage block, one end of which is rotatably connected to a first locking block, and the end of the first locking block away from the linkage block is rotatably connected to a first rotating block. The second limiting rod has a first hole for the first locking block and the first rotating block to pass through. One end of the third connecting shaft is slidably inserted into the other end of the linkage block, and the linkage block is locked to the second limiting rod through the first rotating block.

[0010] Preferably, the linkage mechanism includes two linkage shafts slidably connected together and a gear threaded onto two threaded rods. The gear is rotatably connected below a third connecting shaft. One side of the linkage shaft is provided with a tooth groove that meshes with the gear. A limit plate is provided on the linkage shaft. An inclined groove is formed at the end of the limit plate away from the tooth groove. The linkage mechanism also includes a traction shaft hooked onto a No. 1 rebar. A movable shaft is slidably connected to the inclined groove. The end of the traction shaft away from the No. 1 rebar is slidably connected to the movable shaft. One end of the limit plate is wider than the other.

[0011] Preferably, the linkage shaft is provided with a first sliding groove and a second sliding groove, which are located on both sides of the limiting plate. A connecting piece is rotatably connected to the surface of the gear. The connecting piece slides back and forth on the first sliding groove. The two linkage shafts are slidably connected together by a sliding shaft, and the two ends of the sliding shaft are slidably installed in the two second sliding grooves.

[0012] Preferably, the end of the first connecting shaft away from the second connecting shaft is mounted on the second limiting rod via a second locking mechanism. The second locking mechanism includes a movable block, a second locking block, and a second rotating block. The end of the first connecting shaft is hinged to the movable block, and the movable block and the second locking block are rotatably connected. The plane in which the first connecting shaft rotates relative to the movable block is perpendicular to the plane in which the second locking block rotates relative to the movable block. The second locking block is inserted into the second limiting rod, and the second rotating block is rotatably connected to the end of the second locking block away from the movable block. The second limiting rod also has a second hole through which the second locking block and the second rotating block pass.

[0013] Preferably, one end of the support shaft is rotatably connected to a locking block, and the other end of the support shaft is rotatably connected to a threaded sleeve. A threaded shaft that mates with the threaded sleeve is rotatably connected to the surface of the first limiting rod. The threaded sleeve is threaded onto the threaded shaft, and the two locking blocks are respectively locked on both sides of the No. 2 reinforcing bar.

[0014] Preferably, both of the locking blocks are semi-arc structures, with one locking block having its arc-shaped opening facing the threaded sleeve and positioned above the other locking block.

[0015] Preferably, a first slider is provided at one end of the moving shaft, the first slider is slidably disposed in the inclined groove, and a second slider is rotatably connected at the end of the traction shaft away from the No. 1 rebar, the second slider is slidably connected to the moving shaft, and the traction shaft and the moving shaft are perpendicular to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This device can restrict and effectively control both horizontal and vertical reinforcing bars, ensuring the stability of the overall structure during and after welding, and reserving space for movement in the event of severe deformation, thereby avoiding the impact of a single reinforcing bar on the overall structure.

[0018] 2. During the adaptive position change process, the indirect adaptive change process will significantly increase the resistance to the change in the position of the third connecting shaft relative to the threaded rod. This resistance is used to limit the deformation of the No. 1 rebar and ensure the stability of the steel structure. At the same time, the adaptive change effect provides a certain amount of room for movement, avoiding direct resistance to the restriction and direct damage to the overall structure. Excessively rigid resistance may directly cause the problem of fracture. Therefore, it provides room for movement while limiting the generation of room for movement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one side of the deformation control device for welding box-shaped steel structures in heavy-duty workshops proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the other side of the deformation control device for welding box-shaped steel structures in heavy-duty workshops proposed in this invention.

[0021] Figure 3 This is a top view schematic diagram of the deformation control device for welding box-shaped steel structures in heavy-duty workshops proposed in this invention.

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at point A;

[0023] Figure 5 This is a partial structural diagram of the linkage mechanism;

[0024] Figure 6 A schematic diagram of the first limiting mechanism and the second limiting structure;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the deformation control device for welding box-shaped steel structures in heavy-duty workshops proposed in this invention.

[0026] In the diagram: 1. No. 1 rebar, 2. No. 2 rebar, 3. Clamping block, 4. Support shaft, 5. Threaded sleeve, 6. Threaded shaft, 7. First limiting rod, 8. Second limiting rod, 9. First connecting shaft, 10. Second connecting shaft, 11. Threaded rod, 12. Third connecting shaft, 13. Limiting plate, 14. Linkage shaft, 15. First slide groove, 16. Second slide groove, 17. Connecting piece, 18. Gear, 19. Linkage block, 20. Slide shaft, 21. Inclined groove, 22. First slider, 23. Moving shaft, 24. Second slider, 25. Traction shaft, 26. Movable block, 27. Second clamping block, 28. Second rotating block, 29. Insert shaft, 30. First rotating block, 31. First clamping block. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1-7 A deformation control device for welding box-shaped steel structures in heavy-duty workshops includes a base frame, which is composed of two sets of first limiting rods 7 and second limiting rods 8 that are detachably and rotatably connected together. The two first limiting rods 7 are rotatably connected together, and the two second limiting rods 8 are rotatably connected together. A steel structure is provided between the base frames. The steel structure includes a horizontally arranged No. 1 steel bar 1 and a vertically arranged No. 2 steel bar 2. The first limiting rods 7 and the second limiting rods 8 both abut against the lower surface of the No. 1 steel bar 1.

[0029] Each of the two second limiting rods 8 is provided with a first limiting mechanism. The first limiting mechanism includes a first connecting shaft 9, which is disposed on the upper surface of the first reinforcing bar 1. One end of the first connecting shaft 9 is engaged with the surface of the second limiting rod 8, and the other ends of the two first connecting shafts 9 are connected together by a linkage mechanism. Each of the two first limiting rods 7 is provided with a second limiting mechanism. The second limiting mechanism includes a support shaft 4, one end of which is engaged with the surface of the first limiting rod 7, and the other end is engaged with the surface of the second reinforcing bar 2.

[0030] The first limiting structure also includes a second connecting shaft 10 and a threaded rod 11. The first connecting shaft 9 has an insertion hole. One end of the second connecting shaft 10 is fixedly connected to an insertion shaft 29 inserted into the insertion hole. The threaded rod 11 is rotatably connected to the other end of the second connecting shaft 10. The lower end of the threaded rod 11 is slidably sleeved with a third connecting shaft 12. The second limiting rod 8 is provided with a first locking mechanism. One end of the third connecting shaft 12 is slidably connected to the first locking mechanism.

[0031] The first locking mechanism includes a linkage block 19. One end of the linkage block 19 is rotatably connected to a first locking block 31, and the end of the first locking block 31 away from the linkage block 19 is rotatably connected to a first rotating block 30. A first hole is provided on the second limiting rod 8 for the first locking block 31 and the first rotating block 30 to pass through. One end of the third connecting shaft 12 is slidably inserted into the other end of the linkage block 19. The linkage block 19 is locked to the second limiting rod 8 through the first rotating block 30. The first rotating block 30 and the first locking block 31 on one side of the linkage block 19 can pass through the first hole. After passing through the first hole, rotating the first rotating block 30 changes the angle and can lock onto the surface of the second limiting rod 8. The third connecting shaft 12 is slidably inserted into the linkage block 19 from one side for installation.

[0032] The linkage mechanism includes two linkage shafts 14 slidably connected together and a gear 18 threaded onto two threaded rods 11. The gear 18 is rotatably connected to the lower position of the third connecting shaft 12. A tooth groove is provided on one side of the linkage shaft 14 to mesh with the gear 18. A limit plate 13 is provided on the linkage shaft 14. An inclined groove 21 is opened at the end of the limit plate 13 away from the tooth groove. The linkage mechanism also includes a traction shaft 25 hooked on the first reinforcing bar 1. A moving shaft 23 is slidably connected to the inclined groove 21. The end of the traction shaft 25 away from the first reinforcing bar 1 is slidably connected to the moving shaft 23. One end of the limit plate 13 is wider than the other end.

[0033] The upper end of the threaded rod 11 is directly connected to the first connecting shaft 9, which is set on the upper surface of the first reinforcing bar 1. The lower end of the threaded rod 11 is provided with a linkage mechanism. The traction shaft 25 of the linkage mechanism is directly hooked on the surface of the first reinforcing bar 1. The third connecting shaft 12 installed on the threaded rod 11 is set on the lower surface of the second limiting rod 8, that is, on the lower surface of the first reinforcing bar 1. When the first reinforcing bar 1 moves away from the second limiting rod 8, the length of the traction shaft 25 is constant. Due to the change in relative position, the moving shaft 23 will slide adaptively relative to the inclined groove 21, thereby changing the position of the moving shaft 23 on the limiting plate 13, realizing the effect of the limiting plate 13 moving back and forth. When the limiting plate 13 moves, it will drive the gear 18 to rotate through the tooth groove. The gear 18 will drive the third connecting shaft 12 to change the position relative to the threaded rod 11, thereby pulling the threaded rod 11. When deformation occurs, the first reinforcing bar 1 is controlled.

[0034] The linkage shaft 14 has a first sliding groove 15 and a second sliding groove 16, which are located on both sides of the limiting plate 13. A connecting piece 17 is rotatably connected to the surface of the gear 18. The connecting piece 17 slides back and forth on the first sliding groove 15. The two linkage shafts 14 are slidably connected together by a sliding shaft 20, and the two ends of the sliding shaft 20 are slidably installed in the two second sliding grooves 16. The connecting piece 17 connects the gear 18 and the linkage shaft 14 together, and the sliding shaft 20 connects the two linkage shafts 14 together, so that the two linkage shafts 14 correspond to different positions of the No. 1 rebar 1 and can adapt to change positions to control deformation.

[0035] One end of the moving shaft 23 is provided with a first slider 22, which is slidably disposed in the inclined groove 21. The end of the traction shaft 25 away from the first reinforcing bar 1 is rotatably connected to a second slider 24, which is slidably connected to the moving shaft 23. The traction shaft 25 and the moving shaft 23 are perpendicular to each other, and the connection between the traction shaft 25 and the moving shaft 23 is a sliding connection to adapt to changes in distance.

[0036] The end of the first connecting shaft 9 away from the second connecting shaft 10 is mounted on the second limiting rod 8 through the second locking mechanism. The second locking mechanism includes a movable block 26, a second locking block 27, and a second rotating block 28. The end of the first connecting shaft 9 is hinged to the movable block 26. The movable block 26 and the second locking block 27 are rotatably connected. The plane in which the first connecting shaft 9 rotates relative to the movable block 26 is perpendicular to the plane in which the second locking block 27 rotates relative to the movable block 26. The second locking block 27 is inserted into the second limiting rod 8. The second rotating block 28 is rotatably connected to the end of the second locking block 27 away from the movable block 26. The second limiting rod 8 also has a second hole through which the second locking block 27 and the second rotating block 28 pass. After the second rotating block 28 passes through the second hole, it rotates relative to the second locking block 27, which can lock the second locking block 27 onto the second limiting rod 8. The movable block 26 can rotate relative to the second locking block 27, and the first connecting shaft 9 can rotate relative to the movable block 26. Then the first connecting shaft 9 can adaptively change its angle and position so as to abut against the upper surface of the first reinforcing bar 1.

[0037] One end of the support shaft 4 is rotatably connected to a locking block 3, and the other end of the support shaft 4 is rotatably connected to a threaded sleeve 5. A threaded shaft 6, which mates with the threaded sleeve 5, is rotatably connected to the surface of the first limiting rod 7. The threaded sleeve 5 is threaded onto the threaded shaft 6, and the two locking blocks 3 are respectively locked on both sides of the No. 2 rebar 2. When it is necessary to control the No. 2 rebar 2, the threaded sleeve 5 is threaded onto the threaded shaft 6, and one end of the support shaft 4 is locked onto one side of the No. 2 rebar 2 through the locking block 3. The two locking blocks 3 are locked from different directions on the surface of the No. 2 rebar 2, thereby restricting it from both sides and limiting the deformation of the No. 2 rebar 2.

[0038] Both locking blocks 3 are semi-circular structures. One locking block 3 with its arc-shaped opening facing the threaded sleeve 5 is positioned above the other locking block 3. The locking block 3 with its opening facing inward is positioned above, and the lower locking block 3 can provide a certain support effect for the upper locking block 3.

[0039] During steel structure welding, local deformation may occur due to the material of the steel bars and the connection angle. The deformed steel structure will affect the welding work in other adjacent locations. This device can be placed at the intersection where welding is required, or at the intersection where welding has already been completed.

[0040] The first limiting rod 7 and the second limiting rod 8 are detachably rotatably connected. The square frame formed by the combination of the first limiting rod 7 and the second limiting rod 8 is placed below the first reinforcing bar 1. The third connecting shaft 12 is installed below the second limiting rod 8 through the first snap-fit ​​structure. The first connecting shaft 9 and the second connecting shaft 10 are installed on the upper surface of the second limiting rod 8 through the second snap-fit ​​mechanism. The threaded rod 11 is rotatably connected below the second connecting shaft 10. Rotating the threaded rod 11 allows it to be threaded into the gear 18. The limiting plate 13 is slidably connected to the moving shaft 23, and the moving shaft 23 is slidably connected to the traction shaft 25, which is hooked onto the first reinforcing bar 1. The first connecting shaft 9 is in contact with the upper surface of the first reinforcing bar 1, and the second limiting rod 8 is in contact with the lower surface of the first reinforcing bar 1. The first connecting shaft 9 is also in contact with the first reinforcing bar 1. The contact point of 1 is different from the contact point of the second limiting rod 8 and the first rebar 1. When the first rebar 1 deforms, the relative height of the first connecting shaft 9 and the second limiting rod 8 will be affected, and they will move away from each other. The first connecting shaft 9 will affect the position of the upper end of the threaded rod 11 through the second connecting shaft 10. The length of the first snap-fit ​​mechanism is a fixed value. The distance between the third connecting shaft 12 and the second limiting rod 8 remains unchanged. The gear 18 connected to the third connecting shaft 12 and the height of the limiting plate 13 connected to the gear 18 through the connecting piece 17 are fixed values. Since the deformation of the first rebar 1 will directly affect the traction shaft 25 hooked on the first rebar 1, and the length of the traction shaft 25 is a fixed value, the deformation of the first rebar 1 will pull the traction shaft 25, so that the traction shaft 25 slides on the inclined groove 21 through the moving shaft 23.

[0041] When the traction shaft 25 pulls the moving shaft 23 to move towards the narrower end, it indicates that the relative distance between the first connecting shaft 9 and the second limiting rod 8 is increasing. When the moving shaft 23 moves on the inclined groove 21, it exerts a force on the linkage shaft 14 in the opposite direction, which in turn causes the limiting plate 13 to move relative to the gear 18. The gear 18 is slidably connected to the linkage shaft 14 through the connecting piece 17. The gear 18 meshes with the tooth groove on the surface of the linkage shaft 14. The movement of the linkage shaft 14 will cause the gear 18 to rotate. The gear 18 is threaded onto the threaded rod 11. As the gear 18 rotates, the height position of the third connecting shaft 12 relative to the threaded rod 11 will change. When the first reinforcing bar 1 deforms, the position of the third connecting shaft 12 on the threaded rod 11 will change accordingly.

[0042] The No. 1 rebar 1 affects the position of the limiting plate 13 through the traction shaft 25, thereby achieving the rotation effect of the gear 18. This enables the third connecting shaft 12 to adapt to the positional change of the threaded rod 11. During the adaptive positional change, the indirect adaptation process significantly increases the resistance to the positional change of the third connecting shaft 12 relative to the threaded rod 11. This resistance is used to limit the deformation of the No. 1 rebar 1, ensuring the stability of the steel structure. At the same time, the adaptive change effect provides a certain amount of room for movement, avoiding direct damage to the overall structure caused by direct resistance. Excessive rigid resistance may directly lead to fracture. Therefore, it provides room for movement while simultaneously limiting the generation of room for movement.

[0043] In the vertical direction, during installation, two locking blocks 3 are inserted from both sides of the No. 2 rebar 2. The threaded shaft 6 is rotated, and the threaded sleeve 5 is threaded onto the surface of the threaded shaft 6. This causes the upper ends of the two support shafts 4 to engage with the No. 2 rebar 2. The lower ends of the two support shafts 4 are connected to the second limiting rod 8 through the threaded sleeve 5. The two second limiting mechanisms control the No. 2 rebar 2 in the vertical direction to prevent deformation and effectively control the value.

[0044] This device can restrict and effectively control both horizontal and vertical reinforcing bars, ensuring the stability of the overall structure during and after welding, and reserving space for movement in case of severe deformation, thereby avoiding the impact of a single reinforcing bar on the overall structure.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A deformation control device for welding box-shaped steel structures in heavy-duty workshops, characterized in that, Includes a base frame, which is composed of two sets of detachable and rotatably connected first limiting rods (7) and second limiting rods (8). The two first limiting rods (7) are rotatably connected together, and the two second limiting rods (8) are rotatably connected together. A steel structure is provided between the base frames. The steel structure includes a horizontally arranged No. 1 steel bar (1) and a vertically arranged No. 2 steel bar (2). The first limiting rods (7) and the second limiting rods (8) abut against the lower surface of the No. 1 steel bar (1). Each of the two second limiting rods (8) is provided with a first limiting mechanism. The first limiting mechanism includes a first connecting shaft (9). The first connecting shaft (9) is disposed on the upper surface of the first reinforcing bar (1). One end of the first connecting shaft (9) is engaged with the surface of the second limiting rod (8). The other ends of the two first connecting shafts (9) are connected together by a linkage mechanism. Each of the two first limiting rods (7) is provided with a second limiting mechanism. The second limiting mechanism includes a support shaft (4). One end of the support shaft (4) is engaged with the surface of the first limiting rod (7), and the other end is engaged with the surface of the second reinforcing bar (2).

2. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 1, characterized in that, The first limiting structure also includes a second connecting shaft (10) and a threaded rod (11). The first connecting shaft (9) has an insertion hole. One end of the second connecting shaft (10) is fixedly connected to an insertion shaft (29) inserted into the insertion hole. The threaded rod (11) is rotatably connected to the other end of the second connecting shaft (10). The lower end of the threaded rod (11) is slidably sleeved with a third connecting shaft (12). The second limiting rod (8) is provided with a first snap-fit ​​mechanism. One end of the third connecting shaft (12) is slidably connected to the first snap-fit ​​mechanism.

3. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 2, characterized in that, The first locking mechanism includes a linkage block (19), one end of which is rotatably connected to a first locking block (31), and the end of the first locking block (31) away from the linkage block (19) is rotatably connected to a first rotating block (30). The second limiting rod (8) has a first hole for the first locking block (31) and the first rotating block (30) to pass through. One end of the third connecting shaft (12) is slidably inserted into the other end of the linkage block (19). The linkage block (19) is locked to the second limiting rod (8) through the first rotating block (30).

4. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 2, characterized in that, The linkage mechanism includes two linkage shafts (14) slidably connected together and a gear (18) threaded onto two threaded rods (11). The gear (18) is rotatably connected to the lower position of the third connecting shaft (12). One side of the linkage shaft (14) is provided with a tooth groove that meshes with the gear (18). A limit plate (13) is provided on the linkage shaft (14). The end of the limit plate (13) away from the tooth groove is provided with an inclined groove (21). The linkage mechanism also includes a traction shaft (25) hooked on the No. 1 rebar (1). A moving shaft (23) is slidably connected on the inclined groove (21). The end of the traction shaft (25) away from the No. 1 rebar (1) is slidably connected to the moving shaft (23). One end of the limit plate (13) is wider than the other end.

5. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 4, characterized in that, The linkage shaft (14) is provided with a first slide groove (15) and a second slide groove (16). The first slide groove (15) and the second slide groove (16) are located on both sides of the limiting plate (13). A connecting piece (17) is rotatably connected to the surface of the gear (18). The connecting piece (17) slides back and forth on the first slide groove (15). The two linkage shafts (14) are slidably connected together by a sliding shaft (20). The two ends of the sliding shaft (20) are slidably installed in the two second slide grooves (16).

6. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 1, characterized in that, The end of the first connecting shaft (9) away from the second connecting shaft (10) is mounted on the second limiting rod (8) through the second snap-fit ​​mechanism. The second snap-fit ​​mechanism includes a movable block (26), a second snap-fit ​​block (27), and a second rotating block (28). The end of the first connecting shaft (9) is hinged to the movable block (26). The movable block (26) and the second snap-fit ​​block (27) are rotatably connected. The plane in which the first connecting shaft (9) rotates relative to the movable block (26) is perpendicular to the plane in which the second snap-fit ​​block (27) rotates relative to the movable block (26). The second snap-fit ​​block (27) is inserted into the second limiting rod (8). The second rotating block (28) is rotatably connected to the end of the second snap-fit ​​block (27) away from the movable block (26). The second limiting rod (8) also has a second hole through which the second snap-fit ​​block (27) and the second rotating block (28) pass.

7. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 1, characterized in that, One end of the support shaft (4) is rotatably connected to a locking block (3), and the other end of the support shaft (4) is rotatably connected to a threaded sleeve (5). A threaded shaft (6) that works with the threaded sleeve (5) is rotatably connected to the surface of the first limiting rod (7). The threaded sleeve (5) is threaded onto the threaded shaft (6), and the two locking blocks (3) are respectively locked on both sides of the second reinforcing bar (2).

8. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 7, characterized in that, Both of the aforementioned locking blocks (3) are semi-arc structures, with one locking block (3) having an arc-shaped opening facing the threaded sleeve (5) positioned above the other locking block (3).

9. The deformation control device for welding box-shaped steel structures in heavy-duty workshops according to claim 5, characterized in that, One end of the moving shaft (23) is provided with a first slider (22), which is slidably disposed in the inclined groove (21). The end of the traction shaft (25) away from the first reinforcing bar (1) is rotatably connected to a second slider (24), which is slidably connected to the moving shaft (23). The traction shaft (25) and the moving shaft (23) are perpendicular to each other.

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