Steel box girder plate welding deformation correction equipment

Abstract

The utility model belongs to steel box girder board correction equipment technical field especially relates to a kind of steel box girder board welding deformation correction equipment.A kind of steel box girder board welding deformation correction equipment, including support frame and the two support beams of fixed connection on the support frame, horizontal frame is set on two the support beam, driving mechanism is provided on the horizontal frame, the driving mechanism can drive horizontal frame to slide on support beam;Two connecting plates are provided on the side end surface of the horizontal frame, the both ends of mounting plate are respectively provided on two the connecting plate, multiple groups of flame gun assemblies are provided on the mounting plate;The flame gun assembly includes the clamping piece of fixed clamping in the mounting plate, the mounting frame of fixed connection on the clamping piece and the flame gun of fixed connection on the mounting frame.The utility model can be heated automatically, continuously to steel box girder board and heating efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel box girder plate correction equipment, and particularly relates to a steel box girder plate welding deformation correction equipment. Background Technology

[0002] Steel box girder plates are widely used in steel box girder bridges for highways and river crossings, offering advantages such as short processing cycles, convenient installation, and high material utilization. For example... Figure 11 As shown, the existing steel box girder plate 1 includes a plate-shaped beam plate 11 and a template 12 welded on the beam plate 11 along its length. The template 12 has an internal hollow structure and is trapezoidal in shape. There are welds 13 formed by welding at the connection between the template 12 and the end face of the steel box girder plate 1 on both sides.

[0003] After the actual welding of the steel box girder plate 1, the beam plate 11 at the weld 13 is prone to stress deformation after welding, that is, the beam plate 11 is prone to bending towards the template 12. Since the steel box girder bridge needs to be spliced ​​from multiple short sections of steel box girder plate 1, the welding deformation of the beam plate 11 will directly affect the straightness of the bridge surface and the accuracy of on-site installation and connection.

[0004] Unlike H-beams, the welding deformation of steel box girder plate 1 cannot be corrected using a straightening machine. Instead, stress can only be relieved and corrected by flame heating. Currently, the welded steel box girder plate 1 is typically flipped over and placed on a welding base, and then a person manually heats the weld 13 and its surrounding area with a handheld flame gun to relieve stress.

[0005] The above-mentioned process of manually operating a flame gun to heat the steel box girder plate 1 has the following technical problems: manual operation is labor-intensive and has low processing efficiency. In addition, due to the high temperature near the flame gun during the heating process, workers are affected by high temperature, and the production environment is relatively harsh. Utility Model Content

[0006] To address the technical problems existing in the prior art, this application provides a steel box girder plate welding deformation correction device that can automatically and continuously heat steel box girder plates with high heating efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A steel box girder welding deformation correction device includes a support frame and two support beams fixedly connected to the support frame. A crossbeam is horizontally mounted on the two support beams, and a driving mechanism is provided on the crossbeam. The driving mechanism can drive the crossbeam to slide on the support beam. Two connecting plates are provided on one end face of the crossbeam, and the two ends of the mounting plate are respectively mounted on the two connecting plates. Multiple sets of flame gun assemblies are provided on the mounting plate. The flame gun assembly includes a snap-fit ​​component fixedly mounted on the mounting plate, a mounting bracket fixedly connected to the snap-fit ​​component, and a flame gun fixedly connected to the mounting bracket.

[0008] Preferably, the two ends of the connecting plate are rotatably connected to the crossbeam and the mounting plate, respectively. A swing drive assembly is provided on the crossbeam. The swing drive assembly includes a swing drive motor fixedly connected to the crossbeam, a rotating plate fixedly sleeved on the output shaft of the swing drive motor, and a hinge plate whose two ends are rotatably connected to the rotating plate and the mounting plate, respectively. The swing drive motor can drive the rotating plate to rotate so that the mounting plate swings back and forth.

[0009] Preferably, the snap-fit ​​component includes a C-shaped snap-fit ​​plate, and two sets of rotating wheels are rotatably connected to the inner end faces of the upper and lower horizontal plates of the snap-fit ​​plate, and the mounting plate is snapped between the two sets of rotating wheels.

[0010] Preferably, a locking bolt is threaded onto the vertical plate of the snap-fit ​​plate, and the locking bolt can be tightened to abut against the mounting plate.

[0011] Preferably, a handle is fixedly connected to the locking bolt on the outer side of the vertical plate of the snap-fit ​​plate.

[0012] Preferably, the mounting bracket includes a connecting rod fixedly connected to the snap-fit ​​plate, a fastening block detachably and fixedly sleeved on the connecting rod, and the flame gun detachably and fixedly inserted into the other end of the fastening block.

[0013] Preferably, the fastening block has a through hole one and a through hole two, and locking grooves connecting the through hole one and the through hole two are respectively opened on both ends of the fastening block. The fastening bolt passes through the locking groove and fixes the connecting rod and the flame gun in the through hole one and the through hole two by squeezing the fastening blocks on both sides of the locking groove.

[0014] Preferably, a support rod is fixedly connected to the upper part of the snap-fit ​​component, and a guide ring is provided at the upper end of the support rod.

[0015] Preferably, support columns are vertically fixedly connected to both sides of the crossbeam, and the two ends of the horizontal bar are fixedly connected to the two support columns respectively. Multiple lifting rings are slidably sleeved on the horizontal bar.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting up a connecting plate, a mounting plate, and a flame gun assembly, allows the steel box girder to be placed on a support frame and its weld seams to be flame-heated. A drive mechanism drives a crossbeam to slide along the length of the steel box girder on the support beam, which in turn moves the flame gun assembly. This enables automatic flame heating of the entire weld seam of the steel box girder, resulting in a high level of automation and processing efficiency. It avoids the disadvantages of existing manual flame heating methods, such as high labor intensity, low processing efficiency, and harsh production environment.

[0017] In addition, the two ends of the two connecting plates are respectively hinged to the crossbeam and the mounting plate, so that the crossbeam, connecting plate and mounting plate form a linkage mechanism, realizing the reciprocating swing of the mounting plate and the flame gun. Furthermore, by setting up a swing drive component, the mounting plate is driven to swing, realizing the automatic swing of the mounting plate and the flame gun assembly, increasing the heating range of the flame gun and improving the stress relief effect at the weld of the beam plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention when heating a steel box girder plate.

[0019] Figure 2 This is a side view of the structure of the present invention when heating the steel box girder plate.

[0020] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 4 This is a first-view schematic diagram of the connection structure of the crossbeam, connecting plate, mounting plate, flame gun assembly, and swing drive assembly of this utility model.

[0022] Figure 5 This is a second-view schematic diagram of the connection structure of the crossbeam, connecting plate, mounting plate, flame gun assembly, and swing drive assembly of this utility model.

[0023] Figure 6 This is a first-view structural schematic diagram of the flame gun assembly of this utility model.

[0024] Figure 7 This is a second-view structural schematic diagram of the flame gun assembly of this utility model.

[0025] Figure 8 This is a schematic diagram of the fastening block of this utility model.

[0026] Figure 9 This is a partial structural diagram of the drive mechanism of this utility model.

[0027] Figure 10This is a schematic diagram of the structure of the rotating wheel of this utility model.

[0028] Figure 11 This is a structural schematic diagram of an existing steel box girder.

[0029] In the diagram: 1. Steel box girder plate; 11. Beam plate; 12. Formwork; 13. Weld. 2. Support frame; 21. Horizontal support frame; 22. Vertical support; 23. Beam and slab support frame. 3. Support beams 4. Crossbeam; 41. Support column; 42. Horizontal bar; 43. Lifting ring; 431. Upper lifting ring; 432. Lower lifting ring; 44. Fixed shaft one. 5. Drive mechanism; 51. Slide rail; 52. Rack; 53. Slider; 54. Fixed plate; 55. Sliding drive motor; 56. Gear. 6. Connecting plate, 7. Mounting plate; 71. Fixed shaft two; 72. Fixed shaft four; 8. Flame gun assembly; 81. Clip-on component; 811. Clip-on plate; 812. Rotary wheel; 813. Connecting shaft; 814. Limit screw; 815. Step; 816. Fastening nut; 817. Locking bolt; 818. Limiting disc; 819. Handle; 82. Mounting bracket; 821. Connecting rod; 822. Fastening block; 823. Through hole one; 824. Through hole two; 825. Locking groove; 826. Fastening bolt; 83. Flame gun; 84. Support rod; 85. Guide ring. 9. Swing drive assembly; 91. Motor base; 92. Swing drive motor; 93. Rotating plate; 931. Fixed shaft three; 94. Hinge plate. Detailed Implementation

[0030] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0032] See appendix Figure 1 , 2 As shown in Figures 1 and 3, a steel box girder welding deformation correction device includes a support frame 2 and two support beams 3 fixedly connected to the support frame 2. Specifically, the support frame 2 includes a horizontal support frame 21 forming a horizontal frame structure, and three vertically arranged support frames 22 welded to both sides of the horizontal support frame 21. To support the steel box girder 1, two beam support frames 23 are also welded inside the horizontal support frame 21. The two support beams 3 are fixedly installed on the upper end of the vertical support frames 22 by bolts, and the two support beams 3 are arranged parallel to each other. A horizontal beam 4 is erected above the two support beams 3, and the horizontal beam 4 is arranged perpendicular to the support beams 3. A driving mechanism 5 is provided on the horizontal beam 4, which can drive the horizontal beam 4 to slide relative to the support beams 3.

[0033] See Figure 9 As shown, the drive mechanism 5 includes a slide rail 51 bolted to the outer end faces of two support beams 3 along their length; a rack 52 bolted to the outer end face of the support beams 3 above the slide rail 51 along their length; a slider 53 slidably embedded in the slide rail 51; a fixed plate 54 bolted to the outer end face of the slider 53; and a sliding drive motor 55 bolted horizontally to the outer end face of the fixed plate 54. The output shaft of the sliding drive motor 55 is rotatably embedded in the fixed plate 54 and extends to the inner side of the fixed plate 54. A gear 56 is fixedly sleeved on the output shaft of the sliding drive motor 55 inside the fixed plate 54, and the gear 56 meshes with the rack 52. The two ends of the crossbeam 4 are bolted to the inner end face of the fixed plate 54. Through the above structure, the sliding drive motor 55 drives the gear 56 to rotate, thereby causing the sliding drive motor 55, the fixed plate 54, and the crossbeam 4 to move along the length of the support beams 3.

[0034] It should be noted that the sliding drive motor 55, gear 56, and rack 52 can be installed on both support beams 3 or only on one support beam 3, as long as the sliding drive motor 55 can drive the crossbeam 4 to move back and forth along the length of the support beam 3.

[0035] See Figure 4 , 5 As shown, there are two vertically arranged connecting plates 6 on one side of the crossbeam 4 via bolts or welding. The two ends of the mounting plate 7 can be fixed to the two connecting plates 6 by bolts or welding respectively. Multiple sets of flame gun assemblies 8 are provided on the mounting plate 6.

[0036] The flame gun assembly 8 includes a snap-fit ​​component 81, a mounting bracket 82, and a flame gun 83 with an existing structure. In this embodiment, the snap-fit ​​component 81 can be fixed to the mounting plate 7 by bolts or welding. The relative positions of each snap-fit ​​component 81 can be installed according to the specific position of the weld 13 that needs to be heated on the steel box girder plate 1.

[0037] See Figure 6 , 7 As shown in Figure 8, the mounting bracket 82 includes a connecting rod 821 welded to the snap-fit ​​member 81, a fastening block 822 detachably and fixedly sleeved on the connecting rod 821, and a flame gun 83 detachably and fixedly inserted into the other end of the fastening block 822.

[0038] Specifically, through holes 823 and 824 are provided on the front and rear of the fastening block 822. Locking grooves 825 are provided on both ends of the fastening block 822, which connect through holes 823 and 824 respectively. The locking grooves 825 are vertically arranged and penetrate the fastening block 822. The fastening bolts 826 are horizontally inserted into the locking grooves 825 and fix the connecting rod 821 and the flame gun 83 in the through holes 823 and 824 respectively by pressing the fastening blocks 822 on both sides of the locking grooves 825.

[0039] With the above structure, when the fastening bolt 826 is loosened, the relative position of the fastening block 822 on the connecting rod 821 can be adjusted, and the height of the flame gun 83 relative to the steel box girder plate 1 can be adjusted. It should be noted that the flame gun 83 and the corresponding ventilation pipeline and ignition device are existing technologies and will not be described in detail here.

[0040] Furthermore, to facilitate the guidance of the ventilation lines and prevent the ventilation lines (not shown in the figure) on the flame gun 83 from drooping and affecting the heating of the steel box girder 1 by the flame gun 83, in this embodiment, a support rod 84 is welded to the upper part of the snap-fit ​​member 81. The lower part of the support rod 84 is vertically set, and the upper part of the support rod 84 is inclined outward. A guide ring 85 is welded to the upper end of the support rod 84. The ventilation line on each flame gun 83 passes through the guide ring 85.

[0041] To further organize the ventilation lines, support columns 41 are vertically welded to the upper surfaces of both sides of the crossbeam 4. The two ends of the horizontal rod 42 are welded to the inner upper surfaces of the two support columns 41. Multiple lifting rings 43 are slidably fitted onto the horizontal rod 42. The lifting rings 43 are existing structures, including an upper lifting ring 431 and a lower lifting ring 432 rotatably connected to the upper lifting ring 431. The upper lifting ring 431 can be slidably fitted onto the horizontal rod 42 or fixedly fitted onto it. In actual processing, the ventilation lines corresponding to multiple flame guns 83 can be fixed to the lower lifting ring 432 using existing cable ties.

[0042] In this embodiment, when flame heating the steel box girder plate 1, the steel box girder plate 1 is first placed on the girder support frame 23 along the length of the supporting beam 3, such as... Figure 1 , 2 As shown, the beam 11 is placed on top and the template 12 is placed on the bottom. The position of the steel box girder 1 is finely adjusted so that the weld 13 to be heated is aligned with the flame gun 83. The flame gun 83 and the sliding drive motor 55 are started, so that the crossbeam 4 and the flame gun 83 move along the length of the support beam 3 to automatically heat the weld 13 of the entire steel box girder 1. Example 2

[0043] This embodiment is a further optimization based on embodiment 1. The difference between this embodiment and embodiment 1 is that the flame gun assembly 8 can be fixed after adjusting its relative position on the mounting plate 7, thereby facilitating adaptive adjustment and heating for steel box girder plates 1 of different specifications and sizes.

[0044] See Figure 6 , 7 As shown, the snap-fit ​​component 81 includes a C-shaped snap-fit ​​plate 811. In this embodiment, the snap-fit ​​plate 811 includes a vertical plate and an upper horizontal plate and a lower horizontal plate fixedly connected to the upper and lower end faces of the vertical plate. The horizontal plate and the lower horizontal plate are integrally formed with the vertical plate. Two sets of rotating wheels 812 are rotatably connected to the inner horizontal end faces of both the upper and lower horizontal plates of the snap-fit ​​plate 811. The two sets of rotating wheels 812 are arranged front and rear on the upper and lower horizontal plates of the snap-fit ​​plate 811, with two wheels in each set. When the snap-fit ​​plate 811 is snapped onto the mounting plate 7, the mounting plate 7 is snapped between the two sets of rotating wheels 812 on the upper horizontal plate and between the two sets of rotating wheels 812 on the lower horizontal plate. By setting the rotating wheels 812, the snap-fit ​​plate 811 can not only be snapped onto the mounting plate 7, but also be guided when the relative position of the snap-fit ​​plate 811 on the mounting plate 7 is adjusted.

[0045] See Figure 10As shown, in this embodiment, the rotating wheel 812 can be a ball bearing. A connecting shaft 813 is fixedly inserted into the inner ring of the ball bearing. A limit screw 814 is threaded onto the end face of the connecting shaft 813 located inside the ball bearing. The outer diameter of the nut of the limit screw 814 is larger than the inner diameter of the inner ring of the ball bearing, thereby preventing the ball bearing from detaching from the connecting shaft 813. A step 815 is provided on the outer circumference of the connecting shaft 813 located outside the ball bearing. The outer diameter of the step 815 is larger than the outer diameter of the connecting shaft 813 passing through the upper and lower horizontal plates of the snap-fit ​​plate 811. The outer end face of the step 815 abuts against the inner end face of the upper and lower horizontal plates of the snap-fit ​​plate 811. The connecting shaft 813 outside the step 815 can be detachably inserted into the upper and lower horizontal plates of the snap-fit ​​plate 811 and extends outside them. A fastening nut 816 is threaded onto the connecting shaft 813 outside the upper and lower horizontal plates of the snap-fit ​​plate 811. With the above structure, the rotating wheel 812 is rotatably connected to the snap-fit ​​plate 811. It should be noted that the "outer side" refers to the direction away from the center of the snap-fit ​​plate 811, and the "inner side" refers to the direction towards the center of the snap-fit ​​plate 811.

[0046] Furthermore, to secure the snap-fit ​​component 81 to the mounting plate 7, a locking bolt 817 is horizontally threaded onto the vertical plate of the snap-fit ​​plate 811. A limiting disc 818 is vertically fixed to the end of the locking bolt 817 on the inner side of the vertical plate of the snap-fit ​​plate 811. After the locking bolt 817 is tightened, the limiting disc 818 can press against the mounting plate 7. To facilitate tightening or loosening the locking bolt 817, a handle 819 is welded onto the locking bolt 817 on the outer side of the vertical plate of the snap-fit ​​plate 811.

[0047] The heating process for the steel box girder plate 1 in this embodiment is the same as in Embodiment 1. Example 3

[0048] This embodiment is a further improvement on embodiment 2. The difference between this embodiment and embodiment 2 is that: in order to make the beam plate 11 near the weld 13 to be heated evenly, the mounting plate 7 drives the flame gun assembly 8 to swing back and forth by setting the swing drive assembly 9.

[0049] See Figure 4 , 5 As shown, specifically, both ends of the connecting plate 6 are rotatably connected to the crossbeam 4 and the mounting plate 7, respectively. Specifically, a fixed shaft 44 is horizontally fixedly connected to the crossbeam 4, the inner ring of the rotating bearing is fixedly fitted onto the fixed shaft 44, and one end of the connecting plate 6 is fixedly fitted onto the outer ring of the rotating bearing. Similarly, a fixed shaft 71 is horizontally fixedly connected to the vertical end face of one side of the mounting plate 7, the inner ring of the rotating bearing is fixedly fitted onto the fixed shaft 71, and the other end of the connecting plate 6 is fixedly fitted onto the outer ring of the rotating bearing.

[0050] Thus, the two connecting plates 6, the crossbeam 4, and the mounting plate 7 constitute a linkage mechanism. The mounting plate 7 can swing. In order to realize the automatic swing of the mounting plate 7, a swing drive assembly 9 is provided in this embodiment. The structure of the swing drive assembly 9 can take many forms. For example, in the existing case, the base of the telescopic cylinder is hinged to the crossbeam 4, and the telescopic rod of the telescopic cylinder is hinged to the mounting plate. The swing of the mounting plate 7 can be realized by the extension and retraction of the telescopic rod of the telescopic cylinder.

[0051] In this embodiment, the swing drive assembly 9 includes an L-shaped motor base 91 fixedly connected to the crossbeam 4 by bolts or welding, a swing drive motor 92 horizontally welded to the motor base 91 by bolts, a rotating plate 93 fixedly sleeved on the output shaft of the swing drive motor 92, and two ends of a hinge plate 94 rotatably connected to the rotating plate 93 and the mounting plate 7 respectively, with the same connection method as the two ends of the connecting plate 6 to the crossbeam 4 and the mounting plate 7. A fixed shaft three 931 is fixedly connected vertically to the rotating plate 93, and a fixed shaft four 72 is fixedly connected horizontally to the vertical end face of the other side of the mounting plate 7. The fixed shaft three 931 and the fixed shaft four 72 are respectively fixedly inserted into the inner ring of the corresponding rotating bearing, and the two ends of the hinge plate 94 are respectively fixedly sleeved on the outer ring of the rotating bearing on the fixed shaft three 931 and the fixed shaft four 72.

[0052] Thus, through the above structure, the output shaft of the swing drive motor 92 rotates, causing the rotating plate 93 to rotate, which in turn causes the mounting plate 7 and the flame gun assembly 8 to swing back and forth.

[0053] The working principle and process of this embodiment are as follows: In this embodiment, when flame heating the steel box girder plate 1, the steel box girder plate 1 is first placed on the girder support frame 23 along the length of the supporting beam 3, such as... Figure 1 , 2 As shown, the beam plate 11 is positioned above and the template 12 is positioned below. The position of the steel box girder plate 1 is finely adjusted or the position of the snap-fit ​​plate 811 on the mounting plate 7 is adjusted and the locking bolt 817 is tightened so that the weld seam 13 to be heated is aligned with the flame gun 83. The flame gun 83, the swing drive motor 92, and the sliding drive motor 55 are started, so that the crossbeam 4 and the flame gun 83 move along the length of the support beam 3. At the same time, the mounting plate 7 drives the flame gun 83 to swing back and forth, automatically heating the weld seam 13 and the surrounding area of ​​the entire steel box girder plate 1.

[0054] It should be noted that any parts not described in this specification are existing technologies, and are acceptable as long as they meet the above working process.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel box girder welding deformation correction device, comprising a support frame and two support beams fixedly connected to the support frame, characterized in that: A crossbeam is horizontally mounted on the two support beams, and a driving mechanism is provided on the crossbeam. The driving mechanism can drive the crossbeam to slide on the support beam. Two connecting plates are provided on one end face of the crossbeam, and the two ends of the mounting plate are respectively set on the two connecting plates. Multiple sets of flame gun assemblies are provided on the mounting plate. The flame gun assembly includes a snap-fit ​​component fixedly mounted on the mounting plate, a mounting bracket fixedly connected to the snap-fit ​​component, and a flame gun fixedly connected to the mounting bracket.

2. The steel box girder welding deformation correction equipment according to claim 1, characterized in that: The two ends of the connecting plate are rotatably connected to the crossbeam and the mounting plate, respectively. A swing drive assembly is provided on the crossbeam. The swing drive assembly includes a swing drive motor fixedly connected to the crossbeam, a rotating plate fixedly sleeved on the output shaft of the swing drive motor, and a hinge plate rotatably connected to the rotating plate and the mounting plate, respectively. The swing drive motor can drive the rotating plate to rotate so that the mounting plate swings back and forth.

3. The steel box girder welding deformation correction equipment according to claim 1 or 2, characterized in that: The snap-fit ​​component includes a C-shaped snap-fit ​​plate, on which two sets of rotating wheels are rotatably connected to the inner end faces of the upper and lower horizontal plates, and the mounting plate is snapped between the two sets of rotating wheels.

4. The steel box girder welding deformation correction equipment according to claim 3, characterized in that: A locking bolt is threaded onto the vertical plate of the snap-fit ​​plate, and the locking bolt can be tightened to press against the mounting plate.

5. The steel box girder plate welding deformation correction equipment according to claim 4, characterized in that: A handle is fixedly connected to the locking bolt on the outer side of the vertical plate of the snap-fit ​​plate.

6. The steel box girder plate welding deformation correction equipment according to claim 3, characterized in that: The mounting bracket includes a connecting rod fixedly connected to the snap-fit ​​plate, a fastening block detachably and fixedly sleeved on the connecting rod, and the flame gun detachably and fixedly inserted into the other end of the fastening block.

7. The steel box girder plate welding deformation correction equipment according to claim 6, characterized in that: The fastening block has a through hole one and a through hole two. Locking grooves that connect the through holes one and two are respectively opened on both ends of the fastening block. The fastening bolt passes through the locking groove and fixes the connecting rod and the flame gun in the through holes one and two respectively by squeezing the fastening blocks on both sides of the locking groove.

8. The steel box girder welding deformation correction equipment according to claim 1 or 2, characterized in that: A support rod is fixedly connected to the upper part of the snap-fit ​​component, and a guide ring is provided at the upper end of the support rod.

9. The steel box girder welding deformation correction equipment according to claim 1 or 2, characterized in that: Support columns are vertically fixed to both sides of the crossbeam, and the two ends of the horizontal bar are fixedly connected to the two support columns. Multiple lifting rings are slidably sleeved on the horizontal bar.

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