A box-type assembly clamping fixture
The design of the clamping and holding components in the box-type assembly clamping fixture solves the problem of tight contact between the web plate and the flange plate during the welding process, achieving efficient welding quality control and precision assurance, and is suitable for box-type components of various specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 湖北精工钢结构有限公司
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-30
AI Technical Summary
In steel structure manufacturing, it is difficult to ensure close contact between the web plate and the flange plate before and during welding, which leads to deformation and component twisting caused by thermal expansion and contraction of the metal in the weld area. Traditional bolt clamps are time-consuming to install and remove, and different specifications of box bodies require repeated adjustments.
The design employs a combination of clamping and holding components, which engage with the box-shaped components via hook chains or trapezoidal clips to provide a strong and controllable clamping force, ensuring precise positioning and tight fit of the web and flange plates, and resisting welding deformation.
It improves welding efficiency, ensures welding quality and precision, adapts to the rapid assembly and disassembly of box-shaped components of different specifications, and reduces assembly and disassembly time.
Smart Images
Figure CN224424743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical manufacturing welding, and more specifically, to a box-type assembly and tightening fixture. Background Technology
[0002] In steel structure manufacturing, especially before and during welding, strong forces are required to firmly orient the web plate towards the flange plate to ensure tight contact and no gaps between them. During welding, the metal in the weld area is prone to thermal expansion and contraction, which can cause the web plate to cave inward or lead to twisting deformation of the component. In traditional methods, the installation and removal of bolt clamps takes up more than 70% of the welding preparation time, and repeated adjustments are required for different specifications of box structures.
[0003] Therefore, there is an urgent need for a device that can improve efficiency, ensure welding quality, control welding deformation, and improve welding precision before, during, and after welding. Summary of the Invention
[0004] The purpose of this utility model is to address the problems existing in the prior art by providing a box-type assembly and clamping fixture. It provides a strong and controllable clamping force during the assembly and welding of box-type components by clamping the clamping and holding parts, ensuring that the flange plate and web plate are accurately positioned and tightly fitted, and effectively resisting welding deformation.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A box-type assembly clamping fixture includes a clamping component and a clamping component. The clamping component includes a body with several positioning holes. The clamping component includes a pry bar and a pressure head. One end of the pressure head is a working end, and the other end is a connecting end fixed to the pry bar. The working end consists of symmetrically distributed tubes, and at least two tubes are provided.
[0007] The diameter of the tube body is smaller than the shortest part of the positioning port so that a single tube body can be inserted into the chain link hole; the length of the working end is greater than the maximum thickness of the clamping member to ensure that the clamping member tightly presses against the box flange plate during construction; the tube body is inserted into the positioning port to achieve the engagement of the clamping member and the clamping member;
[0008] The clamping and holding components work together to clamp and fix the box-shaped flange plate to be welded. One end of the clamping component abuts against one side of the box body to be welded, and the working end of the pressure head passes through the positioning port of the clamping component and abuts against the other side of the box body to be welded, thereby ensuring that the web plate and the flange plate are tightly fitted. Since only the working end of the pressure head needs to pass through the positioning port of the clamping component, a disassembly and assembly can be completed in 5-10 seconds.
[0009] Furthermore, the clamping component includes a hook chain, which comprises a chain constituting the body and a hook. The hook is movably mounted on one end of the chain. The chain consists of several links, and the positioning opening is a link hole formed between the links. The tube is inserted into the link hole. The hook is used to tightly hook the upper edge of the web of the box to be welded. During processing, a pry bar is used as a lever fulcrum to press down and generate a vertically inward clamping force. The clamping force acts directly on the mating surface of the web and the flange, eliminating the incomplete fusion defect caused by the assembly gap and ensuring a zero-gap fit between the web and the flange.
[0010] Furthermore, the length of the chain is greater than the height of the box to be welded, and the width of the hook opening is greater than the thickness of the web of the box to be welded.
[0011] Furthermore, the angle of the hook opening is 0°-20°, and both the hook and the pry bar are provided with anti-slip textures to ensure that the hook stably holds the box body and avoids slippage during the clamping process; the hook chain can flexibly wrap around the complex curved surface box body.
[0012] Furthermore, by adjusting the size of the hook and the length of the chain, the hook chain can be adapted to various sizes of box-shaped components.
[0013] Furthermore, the clamping component includes a trapezoidal clamp, which includes a straight ladder component and a U-shaped hook constituting the body. The U-shaped hook is fixedly installed at one end of the straight ladder component. The positioning port is a number of vertically evenly distributed locking interfaces of equal size on the straight ladder component. The tube body is inserted into the locking interfaces.
[0014] Furthermore, the length of the straight ladder component is greater than the height of the box to be welded, and the width of the U-shaped hook opening is greater than the thickness of the web plate of the box to be welded.
[0015] Furthermore, the end of the U-shaped hook away from the straight ladder component is shaped to match the flange plate of the box to be welded, and the two ends of the U-shaped hook are parallel so that the U-shaped hook can fit tightly against the flange plate and avoid slippage; the pry bar is provided with anti-slip texture.
[0016] Furthermore, the rigid clamping of the U-shaped hook and the hook forces the web plate to remain perpendicular to the flange plate.
[0017] Furthermore, the working end of the pressure head consists of two symmetrical parallel tubes, and the connecting end converges the parallel tubes of the working end to one end of the pry bar. The single tube of the clamping member is inserted into the positioning port of the clamping member.
[0018] Furthermore, the length of the clamping member is greater than 5 / 6 of the length of the clamping member. With the lever-type pry bar design, a huge clamping force can be generated by pressing down with one hand. At the same time, the lever length limits the maximum output force to avoid crushing the thin plate.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] (1) This utility model provides a strong and controllable clamping force during the assembly and welding of box-shaped components by clamping the clamping and holding parts, ensuring that the flange plate and web plate are accurately positioned and tightly fitted, and effectively resisting welding deformation.
[0021] (2) This utility model provides two clamping methods. One method is to use a hook chain to hook the upper edge of the web plate and the clamping part to press against the lower flange plate. The other method is to use the U-shaped hook of the trapezoidal clamp to press against the right angle formed between the web plate and the lower flange plate and the clamping part to press against the upper flange plate. This method is suitable for welding box-type components in various situations.
[0022] (3) In this utility model, whether by increasing the length of the chain and adjusting the size of the hook by using a hook chain, or by selecting a card interface that matches the height of the box by using a trapezoidal card, this utility model can be adapted to box-type components of various specifications. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural view of the hook chain of this utility model;
[0024] Figure 2 This is a three-dimensional structural view of the clamping component of this utility model;
[0025] Figure 3 This is a schematic diagram of the hook-chain clamping component in Embodiment 1 of this utility model;
[0026] Figure 4 This is a three-dimensional structural view of the trapezoidal clip of this utility model;
[0027] Figure 5 This is a schematic diagram of the trapezoidal card and clamping component in Embodiment 2 of this utility model.
[0028] In the diagram: 1. Hook chain; 11. Chain; 12. Link hole; 13. Hook; 2. Trapezoidal clamp; 21. Straight trapezoidal piece; 22. Snap-fit interface; 23. U-shaped hook; 3. Clamping piece; 31. Pry bar; 32. Press head. Detailed Implementation
[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "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.
[0031] Example 1:
[0032] Please see Figure 1-3 A box-type assembly clamping fixture includes a clamping component and a clamping component 3. The clamping component and the clamping component 3 cooperate to clamp and fix the box-type flange plate to be welded, ensuring that the web plate and the flange plate are tightly fitted together.
[0033] like Figure 1 As shown, the clamping component includes a hook chain 1, which includes a chain 11 and a hook 13. The chain 11 is composed of several links, and a corresponding number of link holes 12 are formed between the links of the chain 11. The length of the chain 11 is greater than the height of the box to be welded. A hook 13 is movably installed at one end of the chain 11. The width of the opening of the hook 13 is greater than the thickness of the web plate of the box to be welded. The opening angle of the hook 13 is 0°-20°. The hook 13 is provided with anti-slip texture to ensure that the hook 13 stably hooks the web plate of the box and prevents the hook 13 from sliding during the clamping process.
[0034] like Figure 2 As shown, the clamping component 3 includes a pry bar 31 and a pressure head 32 fixedly installed at one end of the pry bar 31. The pry bar 31 has anti-slip texture to prevent the clamping component 3 from slipping out of the hand during clamping. One end of the pressure head 32 is the working end for abutting against the box body, and the other end is the connecting end fixed to the pry bar 31. The working end of the pressure head 32 consists of two parallel solid metal tubes. The diameter of the tubes is smaller than the shortest point of the chain link hole 12 so that a single tube can be inserted into the chain link hole 12. The length of the working end of the pressure head 32 is greater than the sum of the thickness of the chain link and the web plate to ensure that the clamping component 3 can tightly press against the box body flange plate during construction. The connecting end of the pressure head 32 gathers the two parallel tubes at the working end to intersect and fixes them to the pry bar 31.
[0035] like Figure 3 As shown, in actual construction, the hook 13 of the hook chain 1 is tightly hooked onto the upper edge of the web plate, the chain 11 is pulled until taut, the working end of the pressure head 32 is inserted into the link hole 12 closest to the bottom of the box, the pressure head 32 inserted into the link hole 12 extends out of the chain 11 to the bottom of the box, and the working end of the pressure head 32 is made to abut against the lower flange plate of the box by pressing down the pry bar 31, ensuring that the lower flange plate and the web plate are in close contact without gaps, thereby ensuring the welding quality and the geometric accuracy of the component.
[0036] In actual operation, it is necessary to avoid inserting both tubes of the working end of the pressure head 32 into the same chain link hole 12, which may cause the clamping part 3 to fall off the hook chain 1.
[0037] By adjusting the size of the hook 13 and the length of the chain 11, the hook chain 1 can be adapted to various sizes of box-shaped components.
[0038] Example 2:
[0039] Please see Figure 1-5 A box-type assembly clamping fixture, unlike embodiment 1, includes a trapezoidal clamping member 2, such as... Figure 4 As shown, the trapezoidal clamp 2 includes a straight ladder 21 and a U-shaped hook 23. Several clamping interfaces 22 of equal size are vertically and evenly distributed on the straight ladder 21. The length of the straight ladder 21 is greater than the height of the box to be welded. Two symmetrical U-shaped hooks 23 are fixedly installed at one end of the straight ladder 21. The width of the opening of the U-shaped hook 23 is greater than the thickness of the web plate of the box to be welded. One end of the U-shaped hook 23 is fixedly connected to the straight ladder 21. The cross-section of the other end of the U-shaped hook 23 is in the horizontal direction so that the U-shaped hook 23 can fit tightly against the flange plate and avoid slippage.
[0040] The diameter of the tube at the working end of the pressure head 32 is smaller than the shortest part of the clamping interface 22 so that a single tube can be inserted into the clamping interface 22; the length of the working end of the pressure head 32 is greater than the sum of the thickness of the trapezoidal clamp 2 and the web plate, ensuring that the clamping part 3 can tightly press against the flange plate of the box body during construction.
[0041] like Figure 5 As shown, in actual construction, the U-shaped hook 23 of the trapezoidal clip 2 closely abuts against the lower edge of the lower flange plate. The trapezoidal clip 2 is vertically upward, and the working end of the pressure head 32 is inserted into the clip interface 22 closest to the upper flange plate of the box body. At the same time, the pressure head 32 extends out of the clip interface 22 to the top of the box body. By pressing down the pry bar 31, the working end of the pressure head 32 abuts against the upper flange plate of the box body, ensuring that there is a tight contact between the flange plate and the web plate without gaps, thereby ensuring the welding quality and the geometric accuracy of the component.
[0042] In actual operation, it is necessary to avoid inserting both tubes of the working end of the pressure head 32 into the same card interface 22, which may cause the clamping part 3 to fall off from the trapezoidal card part 2.
[0043] Since several equally sized locking interfaces 22 are vertically and evenly distributed on the straight ladder component 21, by selecting locking interfaces 22 that match the height of the box, the trapezoidal locking component 2 can be adapted to box-shaped components of various specifications.
Claims
1. A box-type assembly and clamping fixture, characterized in that: It includes a clamping component and a clamping component (3). The clamping component includes a body with several positioning holes. The clamping component (3) includes a pry bar (31) and a pressure head (32). One end of the pressure head (32) is a working end, and the other end is a connecting end fixed to the pry bar (31). The working end is a symmetrically distributed tube body, and at least two tube bodies are provided. The diameter of the tube body is smaller than the shortest part of the positioning port, the length of the working end is greater than the maximum thickness of the clamping member, and the tube body is inserted into the positioning port to achieve the clamping member and the clamping member (3) engaging.
2. The box-type assembly and tightening fixture according to claim 1, characterized in that: The clamping component includes a hook chain (1), which includes a chain (11) and a hook (13) constituting the body. The hook (13) is movably installed at one end of the chain (11). The chain (11) is composed of several links. The positioning port is a link hole (12) formed between several links. The tube is inserted into the link hole (12).
3. The box-type assembly and tightening fixture according to claim 2, characterized in that: The length of the chain (11) is greater than the height of the box to be welded, and the width of the opening of the hook (13) is greater than the thickness of the web of the box to be welded.
4. The box-type assembly and tightening fixture according to claim 2, characterized in that: The opening angle of the hook (13) is 0°-20°, and both the hook (13) and the pry bar (31) are provided with anti-slip texture.
5. The box-type assembly and tightening fixture according to claim 1, characterized in that: The clamping component includes a trapezoidal clamp (2), which includes a straight ladder (21) and a U-shaped hook (23) constituting the body. The straight ladder (21) is fixedly installed with the symmetrical U-shaped hook (23) at one end. The positioning port is a number of vertically evenly distributed clamping interfaces (22) of equal size on the straight ladder (21). The tube body is inserted into the clamping interfaces (22).
6. The box-type assembly and tightening fixture according to claim 5, characterized in that: The length of the straight ladder member (21) is greater than the height of the box to be welded, and the width of the opening of the U-shaped hook (23) is greater than the thickness of the web plate of the box to be welded.
7. The box-type assembly and tightening fixture according to claim 5, characterized in that: The U-shaped hook (23) has a shape that matches the flange plate of the box to be welded at the end away from the straight ladder (21). The two ends of the U-shaped hook (23) are parallel, and the pry bar (31) is provided with anti-slip texture.
8. The box-type assembly and tightening fixture according to claim 1, characterized in that: The working end of the pressure head (32) consists of two symmetrical parallel tubes. The connecting end converges the parallel tubes at the working end to one end of the pry bar (31). The single tube of the clamping member (3) is inserted into the positioning port of the clamping member.
9. The box-type assembly and tightening fixture according to claim 1, characterized in that: The length of the clamping member (3) is greater than 5 / 6 of the length of the clamping member.