H steel welding fixing clamp of welding equipment

By introducing sliding components and telescopic rods into H-steel welding equipment, and adjusting the length and angle of the clamping plate by servo motors, the problem of insufficient adjustment of the clamping plate in the prior art is solved, and the H-shaped steel material with a longer length is improved The welding stability and accuracy are achieved, and the clamping plate is conveniently stored, suitable for different sizes of H-shaped steels.

CN222269134UActive Publication Date: 2024-12-31CHANGSHU LINMAO MASCH EQUIP CO LTD
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Patent Information

Application Number
CN202420792375.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-17
Publication Date
2024-12-31
Estimated Expiration
2034-04-17

AI Technical Summary

Technical Problem

When the existing H-steel welding fixing fixtures face longer H-shaped steel, the clamping plate is relatively fixed in length and has low adjustment ability, resulting in the inclination of the H-shaped steel and the welding position offset, affecting the welding quality.

Method used

A welding equipment including a workbench and an adjustment mechanism is designed. Through sliding components, telescopic rods and servo motors, the clamping plate is easily adjusted and expanded, and the clamping force on H-shaped steels with longer lengths is improved. Area and stability, and convenient storage of clamping plates when not needed to avoid welding blocking of short steel.

Benefits of technology

It improves the welding limit stability and welding accuracy of H-shaped steel with longer lengths, ensures welding quality, and conveniently stores clamping plates, suitable for H-shaped steel of different sizes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an H steel welding fixing clamp of welding equipment, and relates to the technical field of welding equipment.The H steel welding fixing clamp comprises a workbench and an adjusting mechanism arranged on the outer wall of the workbench, by arranging an extending clamping plate, when the welding equipment is used for welding H-shaped steel, in order to improve the convenience and stability of two-side limiting when the H steel with the long length is welded, the H steel is fixed to the workbench through the extending clamping plate; a sliding servo motor can be started to drive a connecting block to slide along the inner wall of a connecting groove through rotation of a sliding threaded rod, and a telescopic rod is driven to do reciprocating telescopic motion along the outer wall of the connecting rod through connection of a telescopic groove; according to the H-steel welding and fixing clamp of the welding equipment, the extending clamping plate is driven to slide along the outer wall of the H-steel, so that the effect of increasing the clamping stress area of the long H-steel is achieved, and the control operation of the welding and limiting stability of the long H-steel is achieved. The device has the effect of conveniently adjusting the using length of the clamping plate.
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Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an H-steel welding fixing fixture for welding equipment. Background Art

[0002] H-shaped steel is an economical and efficient profile with a more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. It is named because its cross-section is the same as the English letter "H". Since all parts of the H-shaped steel are arranged at right angles, the H-shaped steel has the advantages of strong bending resistance in all directions, simple construction, cost savings and light structure weight. It has been widely used. In the welding process of H-steel, the H-steel needs to be clamped and fixed by a fixing fixture.

[0003] For example, application number 201920430345.9 discloses an H-steel welding fixing fixture of a welding equipment, comprising a base plate, a first stopper, a first pushing assembly and a first driving assembly, the first pushing assembly comprising a connecting rod and a first pushing block, the first stopper is arranged on the base plate, the connecting rod can rotate relative to the base plate, one end of the connecting rod is provided with a first pushing block arranged at intervals along a first direction with the first stopper, the first driving assembly is connected to the other end of the connecting rod, the first driving assembly can drive the connecting rod to make the first pushing block approach or move away from the first stopper, the first driving assembly is arranged on one side of the base plate along a second direction perpendicular to the first direction, this structure facilitates the application of the welding fixture in welding equipment with limited or smaller installation space along the first direction, the utility model also provides a welding device comprising two groups of the above-mentioned welding fixtures arranged along the first direction, which can make the volume of the welding equipment along the first direction smaller and the layout more compact.

[0004] However, although the H-steel welding fixture of this welding equipment can better fix the H-steel during welding, when facing a longer H-steel, the use length of the clamping plate is relatively fixed, and the use length of the clamping plate is not highly adjustable. It is easy to cause one end of the H-steel to tilt due to the small clamping force area, thereby affecting the stability of the steel welding during welding, causing the H-steel docking position to shift, and reducing the welding quality of the H-steel.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a welding equipment H-steel welding fixing fixture is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a welding equipment H-steel welding fixing fixture to solve the problem raised in the above background technology that although the H-shaped steel can be well fixed during welding, when facing the H-shaped steel with a longer length, the use length of the clamping plate is relatively fixed and the adjustability of the use length of the clamping plate is not high.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A welding equipment H-steel welding fixture, comprising a workbench and an adjustment mechanism arranged on the outer wall of the workbench, wherein the adjustment mechanism comprises a sliding assembly;

[0008] The sliding assembly includes a connecting block and a telescopic rod, the outer wall of the workbench is fixedly connected to an adjusting servo motor, the output end of the adjusting servo motor is fixedly connected to an adjusting threaded rod rotatably connected to the inner wall of the workbench, the outer wall of the adjusting threaded rod is threadedly connected to a fixed block slidably connected to the outer wall of the workbench, the top of the fixed block is fixedly connected to a driving servo motor, the outer wall of the workbench is fixedly connected to a sliding electric push rod, one end of the sliding electric push rod is fixedly connected to a welding body slidably connected to the inner wall of the workbench, the output end of the driving servo motor is fixedly connected to a connecting box, the outer wall of the connecting box is fixedly connected to an adjusting electric push rod, and one end of the adjusting electric push rod is fixedly connected to a rack slidably connected to the inner wall of the connecting box The outer wall of the rack is meshed with a gear that is rotatably connected to the inner wall of the connecting box, one end of the rack is fixedly connected to an adjusting clamping plate that is slidably connected to the outer wall of the connecting box, an H-shaped steel material located on one side of the adjusting clamping plate is placed on the outer wall of the workbench, the top of the connecting box is rotatably connected to a connecting rod, the outer wall of the connecting rod is fixedly connected to a sliding servo motor, the output end of the sliding servo motor is fixedly connected to a sliding threaded rod that is rotatably connected to the inner wall of the connecting rod, the outer wall of the sliding threaded rod is threadedly connected to a connecting block that is slidably connected to the inner side wall of the connecting rod, one end of the connecting block is fixedly connected to a telescopic rod that is slidably connected to the outer wall of the connecting rod, and one end of the telescopic rod is fixedly connected to an extension clamping plate that fits the outer wall of the H-shaped steel material.

[0009] Furthermore, the top of the connecting box is fixedly connected to a fixed box, the outer wall of the fixed box is fixedly connected to a rotating servo motor, the output end of the rotating servo motor is fixedly connected to a worm rotatably connected to the inner wall of the fixed box, the outer wall of the worm is meshingly connected to a worm wheel rotatably connected to the inner wall of the fixed box, and the rotation center of the worm wheel is fixedly connected to a connecting shaft fixedly connected to the bottom of the connecting rod.

[0010] Furthermore, a limiting groove is provided at the connection position between the inner wall of the workbench and the welding device body, the adjusting threaded rod and the fixed block are threadedly connected, a fixing groove is provided at the connection position between the outer wall of the workbench and the fixed block, and two groups of adjusting threaded rods are provided, and the rotation directions of the two groups of adjusting threaded rods are opposite.

[0011] Furthermore, a sliding groove is provided at the connection position between the outer wall of the connecting box and the rack, and two groups of racks are provided, and the sliding directions of the two groups of racks are opposite. Two groups of adjustment clamping plates are provided, and the position distribution of the two groups of adjustment clamping plates is symmetrical about the central axis of the H-shaped steel, and the outer wall profile of the adjustment clamping plate is in an "L" shape.

[0012] Furthermore, a connecting groove is provided at a connecting portion between the inner side wall of the connecting rod and the connecting block, and a telescopic groove is provided at a connecting portion between the outer wall of the connecting rod and the telescopic rod.

[0013] Furthermore, two groups of the extension clamping plates are provided, and the positions of the two groups of the extension clamping plates are distributed symmetrically with respect to the central axis of the H-shaped steel. The outer walls of the adjustment clamping plates and the extension clamping plates are both provided with anti-slip pads.

[0014] Furthermore, the worm and the worm wheel are meshingly connected.

[0015] Furthermore, the rotation center of the connecting rod and the rotation center of the worm gear are arranged to overlap with each other.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model provides an extended clamping plate. When the welding equipment is welding H-shaped steel, in order to improve the convenience and stability of limiting the two sides when welding the H-shaped steel with a long length, and to improve the welding accuracy, the sliding servo motor can be turned on to drive the connecting block to slide along the inner wall of the connecting groove through the rotation of the sliding threaded rod, and the telescopic rod is driven to reciprocate along the outer wall of the connecting rod through the connection of the telescopic groove, thereby driving the extended clamping plate to slide along the outer wall of the H-shaped steel, so as to achieve the effect of increasing the clamping force area of ​​the longer H-shaped steel, and realize the control operation of the stability of the welding limit of the longer H-shaped steel;

[0018] 2. The utility model sets a connecting shaft. When the extended clamping plate is not needed, in order to improve the convenience of storing the extended clamping plate and prevent the position of the extended clamping plate from blocking the welding of the shorter H-shaped steel, the rotating servo motor can be turned on to drive the worm wheel to rotate through the rotation of the worm, and through the connection of the connecting shaft, the connecting rod can be driven to rotate along the outer wall of the fixed box, so as to achieve the effect of adjusting the angle of the extended clamping plate and realize the control operation of convenient storage of the extended clamping plate when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0020] Figure 2 This is a schematic diagram of the connection structure between the sliding electric push rod and the welding device body of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the rack and the adjusting clamping plate of the utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the fixed block and the connection box of the utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the telescopic rod and the extension clamping plate of the utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the worm gear and the connecting rod of the utility model.

[0025] In the figure: 1. workbench; 11. sliding electric push rod; 12. welding machine body; 13. limiting groove; 14. connecting box; 15. adjusting electric push rod; 16. rack; 17. slide groove; 18. gear; 19. adjusting clamping plate; 20. H-shaped steel; 2. adjusting mechanism; 21. sliding assembly; 211. connecting rod; 212. sliding servo motor; 213. sliding threaded rod; 214. connecting block; 215. connecting groove; 216. telescopic rod; 217. telescopic groove; 218. extending clamping plate; 3. fixing box; 31. rotating servo motor; 32. worm; 33. worm wheel; 34. connecting shaft; 4. adjusting servo motor; 41. adjusting threaded rod; 42. fixing block; 43. fixing groove; 44. driving servo motor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1: Figure 1-Figure 3 As shown, a welding equipment H steel welding fixture includes a workbench 1 and an adjustment mechanism 2 arranged on the outer wall of the workbench 1, and the adjustment mechanism 2 includes a sliding component 21;

[0028] The sliding assembly 21 includes a connecting block 214 and a telescopic rod 216. The outer wall of the workbench 1 is fixedly connected to an adjusting servo motor 4. The output end of the adjusting servo motor 4 is fixedly connected to an adjusting threaded rod 41 rotatably connected to the inner wall of the workbench 1. The outer wall of the adjusting threaded rod 41 is threadedly connected to a fixing block 42 slidably connected to the outer wall of the workbench 1. The top of the fixing block 42 is fixedly connected to a driving servo motor 44. The outer wall of the workbench 1 is fixedly connected to a sliding electric push rod 11. One end of the sliding electric push rod 11 is fixedly connected to a welding device body 12 slidably connected to the inner wall of the workbench 1. The output end of the driving servo motor 44 is fixedly connected to a connecting box 14. The outer wall of the connecting box 14 is fixedly connected to an adjusting electric push rod 15. One end of the adjusting electric push rod 15 is fixedly connected to a rack 16 slidably connected to the inner wall of the connecting box 14. The outer wall of the rack 16 meshes with the outer wall of the rack 16. A gear 18 is connected to the inner wall of the connecting box 14 for rotation, one end of the rack 16 is fixedly connected to an adjusting clamping plate 19 which is slidably connected to the outer wall of the connecting box 14, an H-shaped steel 20 located on one side of the adjusting clamping plate 19 is placed on the outer wall of the workbench 1, a connecting rod 211 is rotatably connected to the top of the connecting box 14, a sliding servo motor 212 is fixedly connected to the outer wall of the connecting rod 211, an output end of the sliding servo motor 212 is fixedly connected to a sliding threaded rod 213 which is rotatably connected to the inner wall of the connecting rod 211, an outer wall of the sliding threaded rod 213 is threadedly connected to a connecting block 214 which is slidably connected to the inner wall of the connecting rod 211, one end of the connecting block 214 is fixedly connected to a telescopic rod 216 which is slidably connected to the outer wall of the connecting rod 211, and one end of the telescopic rod 216 is fixedly connected to an extension clamping plate 218 which fits the outer wall of the H-shaped steel 20.

[0029] Furthermore, a limiting groove 13 is provided at the connection position between the inner wall of the workbench 1 and the welding device body 12, the adjusting threaded rod 41 and the fixed block 42 are threadedly connected, and a fixing groove 43 is provided at the connection position between the outer wall of the workbench 1 and the fixed block 42. Two groups of adjusting threaded rods 41 are provided, and the rotation directions of the two groups of adjusting threaded rods 41 are opposite. The welding device body 12 forms a sliding structure with the limiting groove 13 through the sliding electric push rod 11, and the fixed block 42 forms a sliding structure with the adjusting threaded rod 41 and the fixed groove 43, which is conducive to the rotation of the adjusting threaded rod 41 to drive the fixed block 42 to slide along the inner wall of the fixed groove 43, thereby realizing the control operation of driving the servo motor 44 to slide.

[0030] Furthermore, a slide groove 17 is provided at the connection position between the outer wall of the connecting box 14 and the rack 16. Two groups of racks 16 are provided, and the sliding directions of the two groups of racks 16 are opposite. Two groups of adjusting clamping plates 19 are provided, and the position distribution of the two groups of adjusting clamping plates 19 is symmetrical about the central axis of the H-shaped steel 20, and the outer wall profile of the adjusting clamping plate 19 is in an "L" shape. The rack 16 forms a sliding structure with the connecting box 14 through the adjusting electric push rod 15 and the slide groove 17, and the adjusting clamping plate 19 forms a clamping structure with the H-shaped steel 20 through the rack 16 and the slide groove 17, which is conducive to the rack 16 sliding along the inner wall of the slide groove 17, driving the adjusting clamping plate 19 to clamp and fix the H-shaped steel 20, thereby realizing the control operation of the stability of the H-shaped steel 20 during welding.

[0031] Furthermore, a connecting groove 215 is provided at the connecting portion between the inner wall of the connecting rod 211 and the connecting block 214, and a telescopic groove 217 is provided at the connecting portion between the outer wall of the connecting rod 211 and the telescopic rod 216. The connecting block 214 forms a sliding structure with the connecting groove 215 through the sliding threaded rod 213, and the extended clamping plate 218 forms a telescopic structure with the connecting rod 211 through the telescopic rod 216 and the telescopic groove 217, which is conducive to the telescopic rod 216 sliding along the inner wall of the telescopic groove 217, driving the extended clamping plate 218 to perform reciprocating telescopic motion along the outer wall of the connecting rod 211, thereby driving the extended clamping plate 218 to slide along the outer wall of the H-shaped steel 20, thereby achieving the effect of increasing the clamping force area of ​​the longer H-shaped steel, and realizing the control operation of the welding limit stability of the longer H-shaped steel 20.

[0032] Furthermore, two groups of extended clamping plates 218 are provided, and the position distribution of the two groups of extended clamping plates 218 is symmetrical about the central axis of the H-shaped steel 20. The outer walls of the adjusting clamping plate 19 and the extended clamping plate 218 are provided with anti-slip pads, which is beneficial to achieve the control operation of clamping stability on both sides of the H-shaped steel 20 with a longer length through the setting of the two groups of extended clamping plates 218.

[0033] Embodiment 2: Figure 1 , Figure 2 and Figure 4As shown, the utility model proposes a welding equipment H steel welding fixture. Compared with the first embodiment, as another embodiment of the utility model, the top of the connecting box 14 is fixedly connected with the fixing box 3, the outer wall of the fixing box 3 is fixedly connected with the rotating servo motor 31, the output end of the rotating servo motor 31 is fixedly connected with the worm 32 rotatably connected with the inner wall of the fixing box 3, the outer wall of the worm 32 is meshedly connected with the worm wheel 33 rotatably connected with the inner wall of the fixing box 3, and the rotation center of the worm wheel 33 is fixedly connected with the connecting shaft 34 fixedly connected with the bottom of the connecting rod 211. When working, By setting up the connecting shaft 34, when the extended clamping plate 218 is not needed, in order to improve the convenience of storing the extended clamping plate 218 and prevent the position of the extended clamping plate 218 from blocking the welding of the shorter H-shaped steel, the rotating servo motor 31 can be turned on to drive the worm gear 33 to rotate through the rotation of the worm 32, and through the connection of the connecting shaft 34, drive the connecting rod 211 to rotate along the outer wall of the fixed box 3, so as to achieve the effect of adjusting the angle of the extended clamping plate 218 and realize the control operation of conveniently storing the extended clamping plate 218 when not in use.

[0034] Furthermore, the worm 32 and the worm wheel 33 are meshingly connected, and the worm wheel 33 forms a rotating structure with the fixed box 3 through the rotating servo motor 31 and the worm 32, which is conducive to the driving of the rotating servo motor 31 through the rotation of the worm 32, driving the worm wheel 33 to rotate along the inner wall of the fixed box 3, thereby realizing the control operation of the rotation of the connecting shaft 34.

[0035] Furthermore, the rotation center of the connecting rod 211 and the rotation center of the worm gear 33 are arranged to overlap with each other, and the connecting rod 211 forms an adjustment structure with the fixed box 3 through the worm gear 33 and the connecting shaft 34, which is beneficial to the rotation of the worm gear 33 through the connection of the connecting shaft 34, driving the connecting rod 211 to perform reciprocating rotation along the outer wall of the fixed box 3, thereby achieving the effect of adjusting the angle of the extended clamping plate 218, and realizing the control operation of conveniently storing the extended clamping plate 218 when not in use.

[0036] Working principle: When using this kind of welding equipment H-steel welding fixing fixture, first, when the welding equipment welds the H-shaped steel 20, in order to improve the convenience and stability of limiting the two sides when welding the H-shaped steel 20 with a longer length, and improve the welding accuracy, the sliding servo motor 212 can be turned on to drive the connecting block 214 to slide along the inner wall of the connecting groove 215 through the rotation of the sliding threaded rod 213, and through the connection of the telescopic groove 217, drive the telescopic rod 216 to reciprocate and telescopic motion along the outer wall of the connecting rod 211, thereby driving the extended clamping plate 218 to slide along the outer wall of the H-shaped steel 20, so as to achieve the effect of increasing the clamping force area of ​​the longer H-shaped steel, and realize the control operation of the welding limit stability of the longer H-shaped steel 20.

[0037] Finally, when the extended clamping plate 218 is not needed, in order to improve the convenience of storing the extended clamping plate 218 and prevent the position of the extended clamping plate 218 from blocking the welding of the shorter H-shaped steel, the rotating servo motor 31 can be turned on to drive the worm gear 33 to rotate through the rotation of the worm 32, and through the connection of the connecting shaft 34, drive the connecting rod 211 to rotate along the outer wall of the fixed box 3, so as to achieve the effect of adjusting the angle of the extended clamping plate 218 and realize the control operation of conveniently storing the extended clamping plate 218 when not in use.

[0038] This is the working principle of the H-steel welding fixture of this welding equipment.

[0039] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A welding fixture for H-steel welding of welding equipment, comprising a workbench (1) and an adjustment mechanism (2) arranged on the outer wall of the workbench (1), characterized in that: The adjustment mechanism (2) comprises a sliding assembly (21); The sliding assembly (21) comprises a connecting block (214) and a telescopic rod (216); the outer wall of the workbench (1) is fixedly connected to an adjusting servo motor (4); the output end of the adjusting servo motor (4) is fixedly connected to an adjusting threaded rod (41) rotatably connected to the inner wall of the workbench (1); the outer wall of the adjusting threaded rod (41) is threadedly connected to a fixing block (42) slidably connected to the outer wall of the workbench (1); the top of the fixing block (42) is fixedly connected to a driving servo motor (44); The outer wall of the table (1) is fixedly connected to a sliding electric push rod (11), one end of the sliding electric push rod (11) is fixedly connected to a welding device body (12) slidably connected to the inner wall of the workbench (1), the output end of the driving servo motor (44) is fixedly connected to a connecting box (14), the outer wall of the connecting box (14) is fixedly connected to an adjusting electric push rod (15), one end of the adjusting electric push rod (15) is fixedly connected to a rack (16) slidably connected to the inner wall of the connecting box (14), and the rack (16) The outer wall of the connecting box (14) is meshedly connected with a gear (18) which is rotatably connected to the inner wall of the connecting box (14); one end of the rack (16) is fixedly connected to an adjustment clamping plate (19) which is slidably connected to the outer wall of the connecting box (14); an H-shaped steel (20) located on one side of the adjustment clamping plate (19) is placed on the outer wall of the workbench (1); the top of the connecting box (14) is rotatably connected to a connecting rod (211); the outer wall of the connecting rod (211) is fixedly connected to a sliding servo motor (212); the sliding servo motor ( The output end of the connecting rod (212) is fixedly connected to a sliding threaded rod (213) rotatably connected to the inner wall of the connecting rod (211); the outer wall of the sliding threaded rod (213) is threadedly connected to a connecting block (214) slidably connected to the inner wall of the connecting rod (211); one end of the connecting block (214) is fixedly connected to a telescopic rod (216) slidably connected to the outer wall of the connecting rod (211); one end of the telescopic rod (216) is fixedly connected to an extension clamping plate (218) that fits the outer wall of the H-shaped steel (20).

2. The H-steel welding fixture for welding equipment according to claim 1, characterized in that: The top of the connecting box (14) is fixedly connected to a fixing box (3), the outer wall of the fixing box (3) is fixedly connected to a rotating servo motor (31), the output end of the rotating servo motor (31) is fixedly connected to a worm (32) rotatably connected to the inner wall of the fixing box (3), the outer wall of the worm (32) is meshingly connected to a worm wheel (33) rotatably connected to the inner wall of the fixing box (3), and the rotation center of the worm wheel (33) is fixedly connected to a connecting shaft (34) fixedly connected to the bottom of the connecting rod (211).

3. The H-steel welding fixture for welding equipment according to claim 1, characterized in that: A limiting groove (13) is provided at the connection position between the inner wall of the workbench (1) and the welding device body (12); the adjusting threaded rod (41) and the fixing block (42) are threadedly connected; a fixing groove (43) is provided at the connection position between the outer wall of the workbench (1) and the fixing block (42); two groups of adjusting threaded rods (41) are provided, and the rotation directions of the two groups of adjusting threaded rods (41) are opposite.

4. The H-steel welding fixture for welding equipment according to claim 1, characterized in that: A sliding groove (17) is provided at the connection position between the outer wall of the connection box (14) and the rack (16), and two groups of racks (16) are provided. The sliding directions of the two groups of racks (16) are opposite. Two groups of adjustment clamping plates (19) are provided. The position distribution of the two groups of adjustment clamping plates (19) is symmetrical about the central axis of the H-shaped steel (20), and the outer wall profile of the adjustment clamping plate (19) is in an "L" shape.

5. The H-steel welding fixture for welding equipment according to claim 1, characterized in that: A connecting groove (215) is provided at a connecting portion between the inner wall of the connecting rod (211) and the connecting block (214), and a telescopic groove (217) is provided at a connecting portion between the outer wall of the connecting rod (211) and the telescopic rod (216).

6. The H-steel welding fixture for welding equipment according to claim 1, characterized in that: The extension clamping plates (218) are provided in two groups, and the positions of the two groups of the extension clamping plates (218) are symmetrical about the central axis of the H-shaped steel (20). The outer walls of the adjustment clamping plates (19) and the extension clamping plates (218) are both provided with anti-slip pads.

7. The H-steel welding fixture for welding equipment according to claim 2, characterized in that: The worm (32) and the worm wheel (33) are meshingly connected.

8. The H-steel welding fixture for welding equipment according to claim 2, characterized in that: The rotation center of the connecting rod (211) and the rotation center of the worm wheel (33) are arranged to overlap with each other.