Limiting device for steel structure welding

Abstract

This application discloses a limiting device for welding steel structures, including a first limiting docking mechanism, a second limiting docking mechanism, a vertical rod, and a ring. The first limiting docking mechanism is used to clamp a steel structure to be welded. The second limiting docking mechanism is used to clamp another steel structure to be welded. The vertical rod is rotatably connected to the first limiting docking mechanism. The ring is sleeved on the vertical rod and is fixedly connected to the second limiting docking mechanism. The beneficial effect of this application is that it provides a limiting device for welding steel structures that pre-sets the angle of the limiting device and then maintains a constant clamping position for welding.

Description

Technical Field

[0001] This application belongs to the field of steel structure welding technology, and more specifically, relates to a limiting device for steel structure welding. Background Technology

[0002] During the welding process of steel structures, auxiliary supports are needed for initial positioning to avoid deviations in the welding position. Existing welding auxiliary supports first fix the steel structure to be welded and then adjust the welding angle. It is not possible to pre-set the angle of the welding auxiliary supports and then clamp the steel structure at a constant position for welding.

[0003] In related technologies, Chinese patent document CN217942342U provides a technical solution for adjusting the welding angle between weldable parts respectively fixed on a first support and a second support to weld products at the required angle. However, this related technology does not offer any technical guidance for solving the problem of not being able to pre-set the angle of the welding auxiliary support and then constantly clamp the steel structure for welding. Summary of the Invention

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background art, some embodiments of this application provide a limiting device for welding steel structures, including a first limiting docking mechanism, a second limiting docking mechanism, a vertical rod, and a ring. The first limiting docking mechanism is used to clamp a steel structure to be welded. The second limiting docking mechanism is used to clamp another steel structure to be welded. The vertical rod is rotatably connected to the first limiting docking mechanism. The ring is sleeved on the vertical rod and is fixedly connected to the second limiting docking mechanism.

[0006] Furthermore, the limiting device for steel structure welding also includes a crossbar. One end of the crossbar is fixedly connected to the first limiting docking mechanism, and the other end is rotatably connected to the upright so that the first limiting docking mechanism and the upright form a rotatable connection. The ring is provided with a limiting groove, and the crossbar passes through the limiting groove.

[0007] Furthermore, the limiting device for steel structure welding also includes a mounting ring, a first spring, and a pull rod. The mounting ring has a first protrusion that contacts the crossbar. The first spring contacts the mounting ring to provide an elastic force to the mounting ring, thereby causing the first protrusion to contact the crossbar. The pull rod is fixedly connected to the mounting ring. The pull rod is slidably connected to the ring.

[0008] Furthermore, the crossbar is formed or fixedly connected with a first groove that engages with the first protrusion. The first protrusion is embedded in the first groove to restrict the rotation of the first limiting docking mechanism relative to the upright.

[0009] Furthermore, the first limiting docking mechanism also includes a first U-shaped seat, a first limiting plate, and a second spring. The first U-shaped seat forms a first fixing groove with one open end. The first limiting plate is slidably disposed within the first fixing groove of the first U-shaped seat. The second spring is disposed between the first U-shaped seat and the first limiting plate to provide elastic force to the first limiting plate.

[0010] Furthermore, the first limiting and docking mechanism also includes a first telescopic rod, a first L-shaped plate, a first threaded sleeve, a first screw, a first air storage box, a first extrusion plate, several first cylinders, and a first piston rod. The first telescopic rod is fixedly connected to the first U-shaped seat. The first L-shaped plate is slidably connected to one end of the first telescopic rod. The first threaded sleeve is rotatably connected to the first L-shaped plate. The first screw is threadedly connected to the first threaded sleeve so that the first screw slides relative to the first threaded sleeve when the first threaded sleeve is rotated. The first air storage box is fixedly connected to the first screw and has a first air storage cavity. The first extrusion plate is located within the first air storage cavity and is fixedly connected to the first air storage box. Several first cylinders are fixedly connected to the first extrusion plate and form a first piston cavity communicating with the first air storage cavity. The first piston rod is slidably connected to the first cylinder and is at least partially located within the first piston cavity. The first piston rod is slidably connected to the first U-shaped seat and is at least partially located within the first fixing groove.

[0011] Furthermore, the second limiting docking mechanism also includes a second U-shaped seat, a second limiting plate, and a third spring. The second U-shaped seat forms a second fixing groove with one open end. The second limiting plate is slidably disposed within the second fixing groove of the second U-shaped seat. The third spring is disposed between the second U-shaped seat and the second limiting plate to provide elastic force to the second limiting plate.

[0012] Furthermore, the second limiting and docking mechanism also includes a second telescopic rod, a second L-shaped plate, a second threaded sleeve, a second screw, a second air storage box, a second extrusion plate, several second cylinders, and a second piston rod. The second telescopic rod is fixedly connected to the second U-shaped seat. The second L-shaped plate is slidably connected to one end of the second telescopic rod. The second threaded sleeve is rotatably connected to the second L-shaped plate. The second screw is threadedly connected to the second threaded sleeve so that the second screw slides relative to the second threaded sleeve when the second threaded sleeve is rotated. The second air storage box is fixedly connected to the second screw and has a second air storage cavity. The second extrusion plate is located within the second air storage cavity and is fixedly connected to the second air storage box. Several second cylinders are fixedly connected to the second extrusion plate and form a second piston cavity communicating with the second air storage cavity. The second piston rod is slidably connected to the second cylinders and is at least partially located within the second piston cavity. The second piston rod is slidably connected to the second U-shaped seat and is at least partially located within the second fixing groove.

[0013] Furthermore, the limiting device for steel structure welding also includes an adjusting cylinder, a piston plate, and a fourth spring. The adjusting cylinder forms an adjusting cavity communicating with the first and second air storage chambers. The piston plate is slidably disposed within the adjusting cavity of the adjusting cylinder. The fourth spring is located within the adjusting cavity and contacts the piston plate to provide an elastic force to the piston plate.

[0014] Furthermore, the limiting device for steel structure welding also includes a mounting plate and an electric push rod. The mounting plate is slidably disposed within the adjustment cavity and fixedly connected to the fourth spring. The electric push rod is fixedly connected to the mounting plate.

[0015] The beneficial effects of this application are as follows:

[0016] A limit device for welding steel structures is provided, which pre-sets the angle of the limit device for welding steel structures and then clamps the steel structure at a constant angle for welding.

[0017] More specifically, some embodiments of this application may produce the following specific beneficial effects:

[0018] 1. The steel structure welding limiting device of this application also includes a crossbar to limit the rotation of the first limiting docking mechanism relative to the upright, which can lock the first limiting docking mechanism, thereby realizing the preset angle between the first limiting docking mechanism and the second limiting docking mechanism.

[0019] 2. The first limiting docking mechanism of this application also includes a first telescopic rod, a first L-shaped plate, a first threaded sleeve, a first screw, a first air storage box, a first extrusion plate, several first cylinders, and a first piston rod, so as to achieve constant locking of the steel structure to be welded and prevent the steel structure from moving during the welding process.

[0020] 3. The limiting device for steel structure welding of this application also includes an adjusting cylinder, a piston plate and a fourth spring. The fourth spring provides elastic force to the piston plate and indirectly applies pressure to the piston rod through gas pressure, thereby realizing the locking of steel structures of different shapes and sizes. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0022] Throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0023] In the attached diagram:

[0024] Figure 1This is a schematic diagram of the overall structure of the steel structure welding limiting device in one embodiment of this application;

[0025] Figure 2 for Figure 1 A schematic diagram of the main structure of the second limiting docking mechanism in the embodiment shown;

[0026] Figure 3 for Figure 1 A partial cross-sectional view of the steel structure welding limiting device in the illustrated embodiment;

[0027] Figure 4 for Figure 3 A magnified view of part A in the diagram, mainly showing structures such as pointers;

[0028] Figure 5 for Figure 1 A schematic diagram showing the connection relationship between the crossbar and the first connecting block in the illustrated embodiment;

[0029] Figure 6 for Figure 1 An exploded view of the crossbar and mounting ring in the illustrated embodiment;

[0030] Figure 7 for Figure 1 A schematic diagram of the connection relationship between the second U-shaped seat and the second connecting block in the embodiment shown;

[0031] Figure 8 for Figure 1 A schematic diagram showing the connection relationship of the first gas storage tank, the first piston rod, and other structures in the illustrated embodiment;

[0032] Figure 9 for Figure 1 A schematic diagram showing the connection relationship of the first piston chamber, the first piston rod, and other structures in the illustrated embodiment;

[0033] Figure 10 for Figure 1 A schematic diagram showing the connection relationship between the regulating cylinder and the second connecting pipe in the illustrated embodiment;

[0034] Figure 11 for Figure 1 A schematic diagram showing the connection relationship of the piston plate, fourth spring, and other structures in the illustrated embodiment.

[0035] Meaning of the reference numerals in the attached figures:

[0036] 100. First limit docking mechanism;

[0037] 101. First U-shaped seat; 101a. First fixing groove; 101b. First mounting groove; 101c. First rotating rod; 101d. First intercepting rod; 101e. Pulley; 102. First limiting plate; 102a. First limiting rod; 103. Second spring; 104. First telescopic rod; 105. First L-shaped plate; 106. First threaded sleeve; 107. First screw; 108. First air storage box; 108a. First air storage cavity; 109. First extrusion plate; 110. First cylinder; 110a. First piston cavity; 111. First piston rod; 112. First operating block; 113. First contact block; 114. First contact pad; 115. First cross connecting frame;

[0038] 200. Second limit docking mechanism;

[0039] 201. Second U-shaped seat; 201a. Second fixing groove; 201b. Second mounting groove; 201c. Second rotating rod; 201d. Second intercepting rod; 202. Second limiting plate; 202a. Second limiting rod; 203. Third spring; 204. Second telescopic rod; 205. Second L-shaped plate; 206. Second threaded sleeve; 207. Second screw; 208. Second air storage box; 211. Second piston rod; 212. Second operating block; 213. Second contact block; 214. Second contact pad;

[0040] 300. Limiting device for steel structure welding;

[0041] 301. Base; 302. Ring; 302a. Limiting groove; 302b. Scale line; 303. Upright rod; 303a. Movable sleeve; 304. First connecting block; 304a. Connecting rod; 304b. Pointer; 305. Crossbar; 305a. First groove; 306. Mounting ring; 306a. First protrusion; 307. First spring; 308. Pull rod; 309. Second connecting block; 310. Adjusting cylinder; 310a. Adjusting cavity; 310b. Solenoid valve; 310c. Exhaust hole; 311. Piston plate; 312. Fourth spring; 313. First connecting pipe; 314. Second connecting pipe; 315. Mounting plate; 315a. Ruler; 316. Electric push rod. Detailed Implementation

[0042] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0043] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Features in the embodiments of this disclosure can be combined with each other unless otherwise specified.

[0044] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0045] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0046] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] Reference Figures 1 to 11 This embodiment provides a limiting device 300 for steel structure welding, including a base 301, a ring 302, a vertical rod 303, a first limiting docking mechanism 100, and a second limiting docking mechanism 200. The ring 302 is fixedly connected to the top of the base 301, and the vertical rod 303, located within the ring 302, is fixedly connected to the center of the top of the base 301. The first limiting docking mechanism 100 and the second limiting docking mechanism 200 are disposed between the base 301 and the ring 302. The vertical rod 303 is rotatably connected to the first limiting docking mechanism 100. The ring 302 is sleeved on the vertical rod 303 and is fixedly connected to the second limiting docking mechanism 200.

[0048] By adopting the above technical solution, the first limiting docking mechanism 100 rotates relative to the second limiting docking mechanism 200, thereby adjusting the included angle between the first limiting docking mechanism 100 and the second limiting docking mechanism 200, and further adjusting the included angle between the two steel structures to be welded held by the first limiting docking mechanism 100 and the second limiting docking mechanism 200.

[0049] More specifically, refer to Figures 1 to 7 The steel structure welding limiting device 300 also includes a first connecting block 304 and a crossbar 305. One end of the first connecting block 304 is fixedly connected to the crossbar 305, and the other end is fixedly connected to the first limiting docking mechanism 100. A movable sleeve 303a is rotatably connected to the upright 303. The other end of the crossbar 305 is fixedly connected to the movable sleeve 303a, so that the first limiting docking mechanism 100 and the upright 303 form a rotatable connection. The ring 302 is provided with a limiting groove 302a, through which the crossbar 305 passes.

[0050] Using the above technical solution, when the crossbar 305 rotates relative to the upright 303, it drives the first limiting docking mechanism 100 to rotate relative to the upright 303, thereby adjusting the angle between the first limiting docking mechanism 100 and the second limiting docking mechanism 200. The limiting groove 302a ensures that the rotation angle of the crossbar 305 and the first limiting docking mechanism 100 fixedly connected to the crossbar 305 is within a reasonable range, preventing the rotation angle from being too large, which would cause the included angle between the first limiting docking mechanism 100 and the second limiting docking mechanism 200 to be too large, making it difficult for the steel structures to be welded to contact each other and perform welding.

[0051] More specifically, refer to Figure 3 The steel structure welding limiting device 300 also includes a mounting ring 306, a first spring 307, and a pull rod 308. The mounting ring 306 has a first protrusion 306a that contacts the crossbar 305. The first spring 307 contacts the mounting ring 306 to provide an elastic force to the mounting ring 306, thereby causing the first protrusion 306a to contact the crossbar 305. The pull rod 308 is fixedly connected to the mounting ring 306. The pull rod 308 is slidably connected to the ring 302.

[0052] Using the above technical solution, the mounting ring 306 limits the crossbar 305, preventing it from sliding too much, thereby fixing the position of the first limiting docking mechanism 100 and the angle between it and the second limiting docking mechanism 200, and pre-adjusting the welding angle between the steel structures to be welded. When the pull rod 308 slides upward relative to the ring 302, the mounting ring 306 also moves upward, and the mounting ring 306 loses its limiting effect on the crossbar 305, allowing the crossbar 305 to drive the first limiting docking mechanism 100 to rotate, thereby adjusting the welding angle of the steel structure. In this way, when the angle of the steel structure connection is not required, the friction between the mounting ring 306 and the crossbar 305 is increased, making it less likely for the connected steel structure to slide. During connection, the friction between the two is eliminated, making the connection of the steel structure more convenient.

[0053] More specifically, refer to Figure 3 and Figure 4 The surface of the ring 302 is provided with scale lines 302b. The top end of the first connecting block 304 is fixedly connected to a connecting rod 304a. The other end of the connecting rod 304a is fixedly connected to a pointer 304b. The pointer 304b is in contact with the surface of the ring 302. The bottom end of the first U-shaped seat 101 is provided with several pulleys 101e. The bottom end of the pulleys 101e is in contact with the upper surface of the base 301.

[0054] By adopting the above technical solution, the setting of pointer 304b and scale line 302b can provide data reference when adjusting the steel structure docking of the first U-shaped seat 101, making angle adjustment more convenient. The pulley 101e can reduce the friction between the first U-shaped seat 101 and the base 301 when the first U-shaped seat 101 moves, making angle adjustment smoother.

[0055] More specifically, refer to Figure 6 The crossbar 305 is formed or fixedly connected to a first groove 305a that mates with the first protrusion 306a. The first protrusion 306a is embedded in the first groove 305a to restrict the rotation of the first limiting docking mechanism 100 relative to the upright 303.

[0056] Using the above technical solution, after the angle between the first limiting docking mechanism 100 and the second limiting docking mechanism 200 is adjusted, the first protrusion 306a is embedded in the first groove 305a, which strengthens the limiting effect of the mounting ring 306 on the crossbar 305, ensuring the stability of the steel structure and the unchanged welding angle during welding.

[0057] More specifically, refer to Figure 1 The first limiting docking mechanism 100 further includes a first U-shaped seat 101, a first limiting plate 102, and a second spring 103. The first U-shaped seat 101 forms a first fixing groove 101a with one open end. The first limiting plate 102 is slidably disposed within the first fixing groove 101a of the first U-shaped seat 101. The second spring 103 is disposed between the first U-shaped seat 101 and the first limiting plate 102 to provide elastic force to the first limiting plate 102. One end of the second spring 103 is fixedly connected to the first U-shaped seat 101.

[0058] Using the above technical solution, the second spring 103 generates an elastic force on the first limiting plate 102. Under the action of the elastic force of the second spring 103, the first limiting plate 102 cooperates with the first U-shaped seat 101 to automatically complete the fixation of the steel structure to be welded, saving the time for limiting the steel structure and improving welding efficiency.

[0059] More specifically, the first limiting plate 102 and the first U-shaped seat 101 are each provided with a plurality of first mounting grooves 101b on one side of the first limiting plate 102. The inner wall of the first mounting groove 101b is rotatably connected to a first rotating rod 101c, and the surface of the first rotating rod 101c extends through the first mounting groove 101b.

[0060] By adopting the above technical solution, the first mounting groove 101b and the first rotating rod 101c are set so that when the steel structure is adjusted laterally for length docking, the first rotating rod 101c can rotate freely in the first mounting groove 101b, reducing the friction of the steel structure movement, making the steel structure position adjustment smoother, enabling free docking operations, and making the docking of steel structures more convenient.

[0061] More specifically, the first limiting plate 102 is L-shaped, with the corner of the first limiting plate 102 bent into an arc angle. One side of the first limiting plate 102 extends through the first U-shaped seat 101, and a first limiting rod 102a is fixedly connected to one side of the first limiting plate 102. The other end of the first limiting rod 102a passes through the second spring 103 and the first U-shaped seat 101 in sequence and extends to the outside of the first U-shaped seat 101.

[0062] By adopting the above technical solution, the L-shaped arc of the first limiting plate 102 makes it easier to place the steel structure in the early stage. The arc can play an effective guiding role. When the first limiting plate 102 moves, the first limiting rod 102a will move synchronously with the first limiting plate 102, which improves the stability of the steel structure when the first limiting plate 102 is locked.

[0063] More specifically, refer to Figures 1 to 9 The first limiting docking mechanism 100 further includes a first telescopic rod 104, a first L-shaped plate 105, a first threaded sleeve 106, a first screw 107, a first air storage box 108, a first extrusion plate 109, several first cylinders 110, a first piston rod 111, and a first operating block 112. The first telescopic rod 104 is fixedly connected to the first U-shaped seat 101. The first L-shaped plate 105 is slidably connected to one end of the first telescopic rod 104. The first threaded sleeve 106 is rotatably connected to the first L-shaped plate 105. The first screw 107 is threadedly connected to the first threaded sleeve 106 so that the first screw 107 slides relative to the first threaded sleeve 106 when the first threaded sleeve 106 is rotated. The first air storage box 108 is fixedly connected to the first screw 107 and has a first air storage cavity 108a. The first extrusion plate 109 is located within the first air storage cavity 108a and is fixedly connected to the first air storage box 108. A plurality of first cylinders 110 are fixedly connected to a first extrusion plate 109 and form a first piston cavity 110a communicating with a first gas storage cavity 108a. A first piston rod 111 is slidably connected to the first cylinders 110 and is at least partially located within the first piston cavity 110a. The first piston rod 111 is slidably connected to a first U-shaped seat 101 and is at least partially located within a first fixing groove 101a. A plurality of first intercepting rods 101d are fixedly connected to the other side of the top end of the first U-shaped seat 101. A first operating block 112 is fixedly connected to one end of a first threaded sleeve 106.

[0064] Using the above technical solution, pulling the first telescopic rod 104 and using the first intercepting rod 101d for restraint, positions the first L-shaped plate 105 above the steel structure. Rotating the first threaded sleeve 106, under the action of the first screw 107, moves the first air storage box 108, the first extrusion plate 109, the first cylinder 110, and the first piston rod 111 downwards, initially restraining and locking the steel structure. The first threaded sleeve 106 and the first screw 107 allow for free adjustment of the piston rod height, making it suitable for steel structures of different heights and increasing the practicality of the steel structure welding limiting device 300.

[0065] When the first telescopic rod 104 pushes the first L-shaped plate 105 above the steel structure and completes the fixation of the steel structure, the steel structure also generates an upward reaction force on the first piston rod 111 and the first extrusion plate 109. At this time, the inner wall of the first U-shaped seat 101 can limit the first air storage box 108, preventing it from tilting due to the reaction force of the steel structure and causing the first telescopic rod 104 to break.

[0066] More specifically, the first limiting docking mechanism 100 also includes a plurality of first contact blocks 113 and first contact pads 114. One end of the first contact block 113 is fixedly connected to the first piston rod 111. The other end of the first contact block 113 is fixedly connected to the first contact pad 114. The first contact pad 114 is made of deformable rubber material.

[0067] Using the above technical solution, a plurality of first contact blocks 113 lock the top of the steel structure. These blocks can be freely adjusted according to the shape of the upper surface of the steel structure, effectively locking steel structures of different specifications and shapes, ensuring a secure locking effect and preventing the steel structure from shaking during welding. The first contact pad 114 is made of deformable rubber material, allowing it to deform freely when the multiple first contact blocks 113 change shape, thus improving the locking effect of the first contact blocks 113.

[0068] More specifically, refer to Figures 1 to 11 The steel structure welding limiting device 300 also includes a second connecting block 309. The second limiting docking mechanism 200 further includes a second U-shaped seat 201, a second limiting plate 202, and a third spring 203. One end of the second connecting block 309 is fixedly connected to the cylinder, and the other end is fixedly connected to the second U-shaped seat 201. The second U-shaped seat 201 forms a second fixing groove 201a with one open end. The second limiting plate 202 is slidably disposed within the second fixing groove 201a of the second U-shaped seat 201. The third spring 203 is disposed between the second U-shaped seat 201 and the second limiting plate 202 to provide elastic force to the second limiting plate 202. One end of the third spring 203 is fixedly connected to the second U-shaped seat 201.

[0069] More specifically, the second limiting plate 202 and the second U-shaped seat 201 are each provided with a plurality of second mounting grooves 201b on one side of the second limiting plate 202. The inner wall of the second mounting groove 201b is rotatably connected to a second rotating rod 201c, and the surface of the second rotating rod 201c extends through the second mounting groove 201b.

[0070] More specifically, the second limiting plate 202 is L-shaped, with the corner of the second limiting plate 202 bent into an arc angle. One side of the second limiting plate 202 passes through the second U-shaped seat 201, and a second limiting rod 202a is fixedly connected to one side of the second limiting plate 202. The other end of the second limiting rod 202a passes through the third spring 203 and the second U-shaped seat 201 in sequence and extends to the outside of the second U-shaped seat 201.

[0071] More specifically, the second limiting docking mechanism 200 further includes a second telescopic rod 204, a second L-shaped plate 205, a second threaded sleeve 206, a second screw 207, a second air storage box 208, a second extrusion plate, several second cylinders, a second piston rod 211, and a second operating block 212. The second telescopic rod 204 is fixedly connected to the second U-shaped seat 201. The second L-shaped plate 205 is slidably connected to one end of the second telescopic rod 204. The second threaded sleeve 206 is rotatably connected to the second L-shaped plate 205. The second screw 207 is threadedly connected to the second threaded sleeve 206 so that the second screw 207 slides relative to the second threaded sleeve 206 when the second threaded sleeve 206 is rotated. The second air storage box 208 is fixedly connected to the second screw 207 and has a second air storage cavity. The second extrusion plate is located within the second air storage cavity and is fixedly connected to the second air storage box 208. Several second cylinders are fixedly connected to the second extrusion plate and form a second piston cavity communicating with the second air storage cavity. The second piston rod 211 is slidably connected to the second cylinder and is at least partially located within the second piston chamber. The second piston rod 211 is slidably connected to the second U-shaped seat 201 and is at least partially located within the second fixing groove 201a. A plurality of second intercepting rods 201d are fixedly connected to the other side of the top end of the second U-shaped seat 201. The second operating block 212 is fixedly connected to one end of the second threaded sleeve 206.

[0072] The technical effects produced by the above technical solution are the same as those of the first connecting block 304, the first U-shaped seat 101, the first limiting plate 102, the second spring 103, the first fixing groove 101a, the first rotating rod 101c, the first telescopic rod 104, the first L-shaped plate 105, the first threaded sleeve 106, the first screw 107, the first air storage box 108, the first extrusion plate 109, several first cylinders 110, the first piston rod 111, and the first operating block 112, etc., and will not be repeated here.

[0073] More specifically, the first limiting docking mechanism 100 further includes a first cross connecting frame 115. The second limiting docking mechanism 200 further includes a second cross connecting frame. The first cross connecting frame 115 is fixedly connected to the first cylinder 110. The second cross connecting frame is fixedly connected to the second cylinder.

[0074] Using the above technical solution, the first cross connecting frame 115 can limit the final position of the first piston rod 111 to prevent the first piston rod 111 from detaching from the first cylinder 110. The effect of the second cross connecting frame is the same as that of the first cross connecting frame 115.

[0075] More specifically, refer to Figure 10 and Figure 11 The steel structure welding limiting device 300 further includes an adjusting cylinder 310, a piston plate 311, and a fourth spring 312. The adjusting cylinder 310 forms an adjusting cavity 310a communicating with the first air storage cavity 108a and the second air storage cavity. The piston plate 311 is slidably disposed within the adjusting cavity 310a of the adjusting cylinder 310. The fourth spring 312 is located within the adjusting cavity 310a and contacts the piston plate 311 to provide an elastic force to the piston plate 311.

[0076] More specifically, the steel structure welding limiting device 300 also includes a first connecting pipe 313 and a second connecting pipe 314. The first connecting pipe 313 connects the first air storage tank 108 and the second air storage tank 208. The second connecting pipe 314 connects the first connecting pipe 313 and the adjusting cylinder 310.

[0077] Using the above technical solution, under the action of the first connecting pipe 313, the first gas storage box 108 and the second gas storage box 208 maintain the same pressure, and the locking force on the two steel structures to be welded is consistent, resulting in a better welding effect. As the first gas storage box 108 and the second gas storage box 208 continue to move downward, the first contact pad 114 and the second contact pad 214 first contact the upper surface of the steel structure. According to the shape of the upper surface of the steel structure, the corresponding first contact block 113 and the second contact block 213 will have different height changes, performing height self-adjustment. The corresponding first piston rod 111 and the second piston rod 211 will slide inside the first cylinder 110 and the second cylinder, thereby allowing the gas inside the first cylinder 110 and the second cylinder to enter the first gas storage box 108 and the second gas storage box 208, which can be freely adjusted using the first connecting pipe 313.

[0078] More specifically, refer to Figure 10The steel structure welding limiting device 300 also includes a mounting plate 315 and an electric push rod 316. The mounting plate 315 is slidably disposed within the adjusting cavity 310a and fixedly connected to the fourth spring 312. The electric push rod 316 is fixedly connected to the mounting plate 315. A solenoid valve 310b is provided at one end of the adjusting cylinder 310, and an exhaust hole 310c is opened at the top of the adjusting cylinder 310. A scale 315a is fixedly connected to one side of the mounting plate 315, and the other end of the scale 315a extends through the adjusting cylinder 310.

[0079] By adopting the above technical solution, the maximum air pressure value of the first air storage box 108 and the second air storage box 208 can be limited, so that the first contact pad 114 and the second contact pad 214 maintain the same locking force, and there will be no over-locking. This effectively protects the surface of the steel structure and does not affect the welding operation. At the same time, the maximum air pressure value can be adjusted according to the specifications of the steel structure, increasing the applicability of the device.

[0080] Once the angle between the first U-shaped seat 101 and the second U-shaped seat 201 is fixed, the first contact pad 114 and the second contact pad 214 fix the steel structure to prevent the steel structure from moving during the welding process and causing the first U-shaped seat 101 to move, which would result in a change in the welding angle and poor welding effect.

[0081] As a practical application of the steel structure welding limiting device 300 in this embodiment, firstly, the user uses the pull rod 308 to release the locking state of the first connecting block 304, pulls the pull rod 308, and the pull rod 308 drives the mounting ring 306 to move upward, so that the crossbar 305 and the mounting ring 306 are disengaged, and the first spring 307 is further compressed. At this time, the first U-shaped seat 101 is pushed, and under the action of the pulley 101e, the crossbar 305 slides in the limiting groove 302a following the first U-shaped seat 101. After the adjustment is completed, the pull rod 308 can be released. At the same time, the first connecting block 304 drives the connecting rod 304a and the pointer 304b to move synchronously. The scale line 302b is used as a reference to assist in the angle adjustment operation.

[0082] Furthermore, the user places the two steel structures to be welded into the corresponding first U-shaped seat 101 and second U-shaped seat 201 respectively. Using the second U-shaped seat 201 as a reference, the user presses down at the arc corner of the first limiting plate 102 so that the steel structure is between the first limiting plate 102 and the inner wall of the first U-shaped seat 101. Under the action of the second spring 103, the initial limiting of one of the steel structures is completed in advance. The other steel structure is installed into the second U-shaped seat 201 using the same method.

[0083] Furthermore, the user moves the two steel structures, which in turn cause the first rotating rod 101c and the second rotating rod 201c to rotate within the first mounting groove 101b and the second mounting groove 201b, respectively. After the two steel structures are aligned, the user pulls the first telescopic rod 104, which is then restrained by the first intercepting rod 101d, so that the first contact pad 114 is positioned above the steel structures. The user then rotates the first threaded sleeve 106 using the first operating block 112, which, under the action of the first screw 107, causes the first piston rod 111 to move downwards. As the first air storage tank 108 continues to move downwards... The first contact pad 114 first contacts the upper surface of the steel structure. Depending on the shape of the upper surface, the corresponding first contact block 113 will exhibit different height changes for self-adjustment. The corresponding first piston rod 111 will automatically slide within the first cylinder 110, allowing gas from the first cylinder 110 to enter the first gas storage tank 108. This gas is then freely adjusted using the first connecting pipe 313. The first cross connecting frame 115 serves as the final limiting mechanism. During continuous adjustment, the first extrusion plate 109 will move as a whole, thus achieving adhesion to the upper surface of the steel structure. The second first limiting docking mechanism 100 locks the other steel structure in the same way as the first limiting mechanism.

[0084] In the early stages of welding, the user can adjust the position of the mounting plate 315 by activating the electric push rod 316 according to the specifications of the steel structure, thereby limiting the maximum air pressure value. Gas will enter the regulating cylinder 310 from the second connecting pipe 314. As the air pressure gradually increases, the gas in the regulating cylinder 310 will squeeze the piston plate 311, causing the fourth spring 312 to bend until the piston plate 311 moves to the exhaust port 310c for free exhaust and pressure relief, thereby maintaining a constant pressure. After locking, the welding operation of the steel structure can be carried out.

[0085] It should be noted that the second gas storage chamber, second extrusion plate, second cylinder, second piston chamber, and second cross connecting frame described above have the same structure as the first gas storage chamber 108a, first extrusion plate 109, first cylinder 110, first piston chamber 110a, and first cross connecting frame 115, and are not shown in the figure. The electric push rod 316 and solenoid valve 310b described above are all devices with relatively mature existing technology. Specific models can be selected according to actual needs. The electric push rod 316 and solenoid valve 310b can be powered by an internal power supply or by mains power; the specific power supply method depends on the situation and will not be elaborated here.

[0086] This application has been described in detail above with reference to specific exemplary embodiments. However, it should be understood that various modifications and variations can be made without departing from the scope of this application as defined by the appended claims. The detailed description and drawings should be considered illustrative only and not restrictive, and any such modifications and variations shall fall within the scope of this application described herein. Furthermore, the background art is intended to illustrate the current state of research and development and significance of the technology, and is not intended to limit this application or its application field.

[0087] More specifically, although exemplary embodiments of this application have been described herein, this application is not limited to these embodiments, but includes any and all embodiments modified, omitted, such as combinations between various embodiments, adaptive changes, and / or substitutions, as would be apparent to those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly as used in the language of the claims and are not limited to the examples described in the foregoing detailed description or during the implementation of this application, which should be considered non-exclusive. Any step enumerated in any method or process claim may be performed in any order and is not limited to the order presented in the claims. Therefore, the scope of this application should be determined solely by the appended claims and their legal equivalents, and not by the description and examples given above.

Claims

1. A limiting device for welding steel structures, comprising: The first limiting docking mechanism is used to clamp a steel structure to be welded; The second limiting docking mechanism is used to clamp another steel structure to be welded; Its features are: The limiting device for steel structure welding also includes: The upright pole forms a rotatable connection with the first limiting docking mechanism; A circular ring is fitted onto the upright and forms a fixed connection with the second limiting docking mechanism; The first limiting docking mechanism also includes: The first U-shaped seat forms a first fixing groove with an opening at one end; The first limiting plate is slidably disposed in the first fixing groove of the first U-shaped seat; A second spring is disposed between the first U-shaped seat and the first limiting plate to provide elastic force to the first limiting plate; The first telescopic rod is fixedly connected to the first U-shaped seat; The first L-shaped plate is slidably connected to one end of the first telescopic rod; The first threaded sleeve is rotatably connected to the first L-shaped plate; A first screw is threadedly connected to the first threaded sleeve so that the first screw slides relative to the first threaded sleeve when the first threaded sleeve is rotated; The first gas storage box is fixedly connected to the first screw and has a first gas storage chamber. The first extrusion plate is located inside the first gas storage cavity and is fixedly connected to the first gas storage box. A plurality of first cylinders are fixedly connected to the first extrusion plate and form a first piston cavity communicating with the first gas storage cavity; The first piston rod is slidably connected to the first cylinder and is at least partially located within the first piston chamber; The first piston rod is slidably connected to the first U-shaped seat and is at least partially located within the first fixing groove.

2. The limiting device for steel structure welding according to claim 1, characterized in that: The limiting device for steel structure welding also includes: A crossbar is fixedly connected at one end to the first limiting docking mechanism, and rotatably connected at the other end to the upright so that the first limiting docking mechanism and the upright form a rotatable connection; The ring is provided with a limiting groove, and the crossbar passes through the limiting groove.

3. The limiting device for steel structure welding according to claim 2, characterized in that: The limiting device for steel structure welding also includes: The mounting ring has a first protrusion that contacts the crossbar; A first spring contacts the mounting ring to provide an elastic force to the mounting ring, thereby causing the first protrusion to contact the crossbar; The pull rod is fixedly connected to the mounting ring; The pull rod is slidably connected to the ring.

4. The limiting device for steel structure welding according to claim 3, characterized in that: The crossbar is formed or fixedly connected with a first groove that cooperates with the first protrusion; the first protrusion is embedded in the first groove to restrict the rotation of the first limiting docking mechanism relative to the upright.

5. The limiting device for steel structure welding according to any one of claims 1 to 4, characterized in that: The second limiting docking mechanism also includes: The second U-shaped seat forms a second fixing groove with an opening at one end; The second limiting plate is slidably disposed in the second fixing groove of the second U-shaped seat; A third spring is disposed between the second U-shaped seat and the second limiting plate to provide elastic force to the second limiting plate.

6. The limiting device for steel structure welding according to claim 5, characterized in that: The second limiting docking mechanism also includes: The second telescopic rod is fixedly connected to the second U-shaped seat; The second L-shaped plate is slidably connected to one end of the second telescopic rod; The second threaded sleeve is rotatably connected to the second L-shaped plate; The second screw is threadedly connected to the second threaded sleeve so that the second screw slides relative to the second threaded sleeve when the second threaded sleeve is rotated; The second gas storage box is fixedly connected to the second screw and has a second gas storage chamber; The second extrusion plate is located inside the second gas storage cavity and is fixedly connected to the second gas storage box; Several second cylinders are fixedly connected to the second extrusion plate and have a second piston cavity that communicates with the second gas storage cavity; The second piston rod is slidably connected to the second cylinder and is at least partially located within the second piston chamber; The second piston rod is slidably connected to the second U-shaped seat and is at least partially located within the second fixing groove.

7. The limiting device for steel structure welding according to claim 6, characterized in that: The limiting device for steel structure welding also includes: The regulating cylinder has a regulating cavity that connects the first gas storage cavity and the second gas storage cavity; The piston plate is slidably disposed within the adjusting cavity of the adjusting cylinder; A fourth spring is located within the adjustment cavity and contacts the piston plate to provide an elastic force to the piston plate.

8. The limiting device for steel structure welding according to claim 7, characterized in that: The limiting device for steel structure welding also includes: The mounting plate is slidably disposed within the adjustment cavity and fixedly connected to the fourth spring; An electric actuator is fixedly connected to the mounting plate.

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