Pipe quick coupling clamp welding positioning device for fluid conveying
The precise and rapid positioning of pipe clamps is achieved by using positioning clamps and pull claws, which solves the problem of requiring two people to operate in the existing technology, improves the yield and production efficiency, and reduces labor costs and safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANKUANG ENERGY GRP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, pipe welding positioning requires two people to work together, which has problems such as clamp tilting, thermal expansion deformation during welding, safety hazards due to manual assistance, and low efficiency.
By employing positioning clamps, a pipe inner wall centering locking device, and positioning claws, precise and rapid positioning of pipe ports can be achieved, reducing manual assistance and improving the degree of automation.
It enables one person to accurately position pipe clamps, improving the yield rate, reducing labor costs and occupational hazards, and significantly improving production efficiency.
Smart Images
Figure CN224543576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline tooling processing and positioning technology, specifically to a quick-connect clamp welding and positioning device for conveying fluid pipelines. Background Technology
[0002] In China's coal mining industry, as well as other industries and enterprises, pipelines for transporting gases and liquids are frequently used in production processes. To facilitate rapid setup, repair, replacement, and dismantling of work areas, quick-connect pipelines are widely adopted. These quick-connect pipelines mainly consist of a pipe structure with clamps and retaining rings. Clamps (often made of high-strength steel reinforcement rings) are welded to fixed positions at the ends of the two pipes according to the location of the retaining ring grooves. Currently, most companies use simple tools and personnel to assist in positioning, followed by welding the clamps at the pipe ends. This positioning and welding method often requires one person to weld and another to assist in fixing the clamps. Manual clamp fixing is prone to problems such as clamp tilting and deformation of the clamps (steel reinforcement rings) due to thermal expansion during welding, easily resulting in defective products. Furthermore, manual clamp fixing can easily cause heat radiation, burns from welding slag, and occupational hazards to auxiliary personnel from welding fumes, posing safety risks to construction workers and resulting in low efficiency. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the existing background technology and provide a quick-connect clamp welding and positioning device for conveying fluid pipes.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a quick-connect clamp welding and positioning device for conveying fluid, including a positioning clamp, a pipe inner wall center alignment and locking device, and a positioning claw, wherein the pipe inner wall center alignment and locking device is located on the inner side of the positioning clamp, and the positioning claw is located on the outer side of the positioning clamp, both on the same central axis. The positioning clamp includes a docking part and a clamp sleeve vertically fixed to the outer center of the docking part, with a connecting screw hole on the central axis of both; the pipe inner wall center alignment and locking device includes a positioning screw rod, an inner sleeve, and at least two sets of tensioning rods, wherein the positioning screw rod is rotatably installed in the screw hole, the inner sleeve is fitted onto the front end of the positioning screw rod, and both sets of tensioning rods are connected to the inner side of the inner sleeve and the docking part; the positioning claw includes an outer sleeve, a claw sleeve, a claw connecting rod, and a claw, wherein the outer sleeve is rotatably fitted onto the clamp sleeve, the claw sleeve is rotatably fitted onto the outer sleeve, the claw connecting rod is fixed to the claw sleeve, and a claw is installed at the end of the claw connecting rod, extending towards the positioning clamp and forming a clamp positioning space with the docking part of the positioning clamp.
[0005] Furthermore, the docking part of the positioning clamp has a cylindrical cavity structure, and an annular U-shaped groove is provided on its inner side. The U-shaped groove can fit against the wall of the pipe to be processed, which can preliminarily screen and reject pipes with deformed or non-compliant dimensional ends.
[0006] Furthermore, the inner wall of the lead screw hole is provided with an internal thread that is compatible with the positioning lead screw, and the positioning lead screw is rotatably installed in the lead screw hole; the outer wall of the collet sleeve is smooth, and the outer collet sleeve is rotatably fitted onto the collet sleeve; the rear end of the collet sleeve is equipped with an anti-loosening retaining ring through an anti-loosening fixing screw.
[0007] Furthermore, the inner wall of the outer threaded sleeve is smooth, and its outer wall is provided with external threads. The aforementioned pull claw threaded sleeve is engaged and fitted onto the outer threaded sleeve. The rear end of the outer threaded sleeve is provided with an outer threaded sleeve recess, and a handle or force-adding rod can be detachably inserted into the outer threaded sleeve recess.
[0008] Furthermore, a screw end is fixedly installed at the rear end of the positioning screw, and a through hole is provided on it, which is perpendicular to the central axis of the positioning screw. A handle or a force-applying rod can be detachably installed in the through hole.
[0009] Furthermore, the tensioning connecting rod is provided in two sets, which are hinged at equal intervals to the circumferential outer wall of the inner threaded sleeve; each set of tensioning connecting rods includes a first connecting rod and a double tensioning connecting rod that are hinged in sequence, wherein the movable end of the first connecting rod is hinged to the inner threaded sleeve, and the movable end of the double tensioning connecting rod is hinged to the inner top wall of the docking part in the positioning clamp.
[0010] Furthermore, the outer wall of the double-track tensioning link is provided with an anti-slip pad.
[0011] Furthermore, at least two pull claw connecting rods are provided, which are fixedly installed at equal intervals on the circumferential outer wall of the pull claw thread sleeve, and the pull claws are hinged to their outer ends.
[0012] Furthermore, the positioning claw also includes multiple spring tensioning devices, each corresponding to the claw. Each spring tensioning device includes a tension spring and two spring fixing lugs. One spring fixing lug is fixed to the inner side of the claw, and the other spring fixing lug is fixed to the front side of the claw connecting rod. The two ends of the tension spring are respectively connected to the two spring fixing lugs in the same group.
[0013] The outer end of the pull claw connecting rod is also fixed with a forward-extending pull claw limiting block, located on the inner side of the corresponding pull claw.
[0014] Furthermore, the front end of the pull claw is provided with a chamfered bevel structure.
[0015] Compared with the prior art, the present invention has the following beneficial effects: The pipe quick-connect clamp positioning device of the present invention solves the problem of accurate and rapid positioning of clamps (rebar rings) and pipes, realizes semi-automatic clamp positioning operation of molds, reduces the operation process that originally required at least two people to complete to one person independently, reduces manpower and improves work efficiency; at the same time, it avoids the clamp tilting caused by manual positioning and the clamp (rebar ring) deformation and tilting caused by thermal expansion during welding, which is unavoidable by manual labor, greatly improves the yield rate and reduces the labor intensity of employees; it can also avoid occupational hazards for auxiliary personnel, significantly reduce labor costs and significantly improve production efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] In the diagram: 1. Positioning clamp, 2. Pipe inner wall centering locking device, 3. Positioning claw, 4. Pipe body, 5. Clamp, 6. Handle, 11. Connecting part, 12. Clamp threaded sleeve, 13. U-shaped groove, 14. Circumferential side wall, 15. Screw hole, 16. Anti-detachment retaining ring, 17. Anti-detachment fixing screw, 21. Positioning screw, 22. Inner threaded sleeve, 23. First connecting rod, 24. Double tensioning connecting rod, 25. Screw end, 26. Through hole, 27. Anti-slip pad, 28. Connecting rod double ear connector, 31. Outer threaded sleeve, 32. Claw threaded sleeve, 33. Claw connecting rod, 34. Claw, 35. Spring tensioning device, 36. Outer threaded sleeve recess, 37. Claw limiting block. Detailed Implementation
[0018] It should be noted that in the description of this utility model, terms such as "upper", "lower", "front", "rear", "left", "right", "coaxial", "inner", "outer", "center", and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation, be constructed and operated in a specific orientation, or be construed as a limitation on this utility model.
[0019] It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:
[0021] like Figure 1 As shown, a quick-connect clamp welding and positioning device for conveying fluid pipelines includes a positioning clamp 1, a pipeline inner wall center alignment and locking device 2, and a positioning claw 3. The positioning clamp 1 includes a docking part 11 and a clamp sleeve 12. The docking part 11 is a horizontal cylindrical cavity structure with an open front end. The clamp sleeve 12 is fixedly installed at the outer center of the rear end of the docking part 11, coaxially arranged and relatively perpendicular to the rear side wall of the docking part 11. The two can be integrally formed. The central axis of the clamp sleeve 12 is provided with a screw hole 15 that passes through its front and rear ends and the docking part 11. The inner side wall of the screw hole 15 is provided with an internal thread. The outer side wall of the clamp sleeve 12 is smooth.
[0022] The pipe inner wall center alignment locking device 2 is located inside the docking part 11 of the positioning flange 1, on the same central axis. It includes a positioning screw 21, an inner threaded sleeve 22, and two sets of tensioning rods. The positioning screw 21 is horizontally inserted into the screw hole 15 and meshes with it for rotation. The inner threaded sleeve 22 is coaxially rotated on the positioning screw 21 and meshes with it for rotation, located inside the positioning flange 1. The two sets of tensioning rods are symmetrically installed on the inner threaded sleeve 22. On the circumferential outer wall, each set of tensioning rods includes a first connecting rod 23 and a double-track tensioning rod 24, which are hinged sequentially. The movable end of the first connecting rod 23 is hinged to a connecting rod double-ear connector 28 fixed on the circumferential side wall of the inner threaded sleeve 22. The movable end of the double-track tensioning rod 24 is hinged to the inner wall of the docking part 11 in the positioning clamp 1. An anti-slip pad 27 is also fixed on the outer wall of the double-track tensioning rod 24 to hold and abut against the inner wall of the pipe body 4, providing a certain degree of fixation. The rear end of the positioning screw 21 is fixed with a screw end 25, which has a through hole 26 perpendicular to the central axis of the positioning screw 21. A handle 6 or a force-applying rod can be detachably installed in the through hole 26 to facilitate effortless rotation of the positioning screw 21.
[0023] The positioning claw 3 is a screw-type positioning claw, located on the outside of the positioning clamp 1 and on the same central axis. It includes an outer threaded sleeve 31, a claw threaded sleeve 32, at least two claw connecting rods 33, and corresponding claws 34. The outer threaded sleeve 31 is a cylindrical hollow structure that is rotatably fitted onto the clamp threaded sleeve 12. Its inner sidewall is smooth, and the two can rotate relative to each other. Lubricating oil can be dripped between the outer threaded sleeve 31 and the clamp threaded sleeve 12 to ensure flexible rotation between them. The rear end of the clamp threaded sleeve 12 is fixedly installed with an anti-detachment retaining ring 16 by an anti-detachment fixing screw 17 to prevent the outer threaded sleeve 31 from rotating and falling off. The circumferential sidewall of the rear end of the outer threaded sleeve 31 is provided with an outer threaded sleeve recess 36, the central axis of which is perpendicular to the central axis of the outer threaded sleeve 31. A handle 6 or a force rod can be detachably inserted into the outer threaded sleeve recess 36 to facilitate the rotation of the outer threaded sleeve 31. The outer wall of the outer threaded sleeve 31 is provided with an external thread. The pull claw threaded sleeve 32 is coaxially fitted onto the outer threaded sleeve 31 and can engage and rotate with it. There are two pull claw connecting rods 33, which are symmetrically fixed to the circumferential side wall of the pull claw threaded sleeve 32 and are perpendicular to the central axis of the pull claw threaded sleeve 32. The outer end of each pull claw connecting rod 33 is hinged to a pull claw 34. The pull claw 34 extends laterally toward the positioning clamp 1, and its end is claw-shaped, which can form a clamp positioning space with the circumferential side wall 14 of the docking part 11 in the positioning clamp 1. Its front end outer side has a chamfered bevel structure, which facilitates the clamp 5 to be pushed into the clamp positioning space.
[0024] A spring tensioning device 35 is also provided between the aforementioned claw 34 and claw connecting rod 33. The spring tensioning device 35 includes a tension spring and two corresponding spring fixing lugs. One spring fixing lug is fixed to the inner side of the aforementioned claw 34, and the other spring fixing lug is fixed to the front side of the aforementioned claw connecting rod 33. The two ends of the tension spring are respectively connected to the two spring fixing lugs. At the same time, a forward-extending claw limiting block 37 is also fixed to the outer end of the claw connecting rod 33, located inside the corresponding claw 34, to limit the movement of the claw 34 in the inward direction, realizing unidirectional outward unfolding movement.
[0025] Furthermore, an annular U-shaped groove 13 is fixedly provided on the front wall of the inner cavity of the docking part 11 in the above-mentioned positioning bracket 1. The U-shaped groove 13 can fit with the pipe wall of the pipe body 4 to be processed, and can perform preliminary screening and rejection of pipe bodies 3 with deformed pipe ends or those that do not meet the size requirements.
[0026] The specific operating principle is as follows: When in use, first, the clamp 5 is fitted onto the pipe body 4, then the positioning clamp 1 is placed at the pipe port of the pipe body 4, and then the positioning screw 21 is rotated clockwise. The positioning screw 21 extends forward of the positioning clamp 1, thereby driving the inner thread sleeve 22 to move closer to the positioning clamp 1, which in turn drives the tensioning connecting rod to retract and open inward, thereby tensioning and locking with the inner wall of the pipe body 4, and locking the positioning clamp 1 to achieve initial positioning.
[0027] Then, push the clamp 5 towards the circumferential side wall 14 of the positioning clamp 1, and use the spring tensioning device 35 to pull the claw 34 inward. Then, use the handle 6 to rotate the outer thread sleeve 31 clockwise, which will drive the claw thread sleeve 32 that meshes with the outer thread sleeve 31 to move away from the positioning clamp 1, thereby driving the claw 34 to move towards the rear side of the positioning clamp 1, thus tightening the clamp 5 towards the positioning clamp 1, completing the precise positioning of the clamp 5, and then welding it to fix it.
[0028] After the positioning welding operation is completed, rotate the outer threaded sleeve 31 counterclockwise, and the pull claw 34 moves away from the positioning clamp 1. Then lift the pull claw 34 outward. Rotate the positioning screw 21 counterclockwise, and the inner threaded sleeve 22 moves away from the positioning clamp 1, which drives the tensioning connecting rod to relax and exit the welded pipe body 4, thus completing one clamp welding positioning operation.
[0029] The inner side of the aforementioned positioning bracket 1 is suitable for various sizes of round steel pipes, including those with a diameter of Φ108.
[0030] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the details of the above exemplary embodiments. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of its substance without departing from the spirit or basic characteristics of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A welding and positioning device for quick-connect clamps on pipes used for conveying fluids, characterized in that: It includes a positioning clamp, a pipe inner wall center alignment locking device, and a positioning claw, wherein the pipe inner wall center alignment locking device is located inside the positioning clamp, and the positioning claw is located outside the positioning clamp, both on the same central axis. The positioning flange includes a docking part and a flange sleeve fixed to the center of the outer side of the docking part, and the central axis of the two is provided with a connecting screw hole; The pipe inner wall center alignment and locking device includes a positioning screw, an inner threaded sleeve, and at least two sets of tensioning rods. The positioning screw is rotatably installed in the screw hole, the inner threaded sleeve is fitted onto the front end of the positioning screw, and the tensioning rods are all connected to the inner side of the inner threaded sleeve and the mating part. The positioning claw includes an outer threaded sleeve, a claw threaded sleeve, a claw connecting rod, and a claw. The outer threaded sleeve is rotatably fitted onto the aforementioned clamp threaded sleeve, and the claw threaded sleeve is rotatably fitted onto the aforementioned outer threaded sleeve. The claw connecting rod is fixed to the claw threaded sleeve, and a claw is installed at the end of the claw connecting rod. The claw extends toward the positioning clamp and forms a clamp positioning space with the docking part of the aforementioned positioning clamp.
2. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The docking part of the positioning clamp has a cylindrical cavity structure, and its inner side is also provided with an annular U-shaped groove.
3. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The inner wall of the lead screw hole is provided with an internal thread that is compatible with the positioning lead screw, and the positioning lead screw is rotatably installed in the lead screw hole; The outer wall of the kalans sleeve is smooth, and the outer silk sleeve is rotatably fitted onto the kalans sleeve. The rear end of the kalans sleeve is equipped with an anti-detachment retaining ring through an anti-detachment fixing screw.
4. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 3, characterized in that: The inner wall of the outer threaded sleeve is smooth, and the outer wall is provided with external threads. The aforementioned pull claw threaded sleeve is engaged and fitted on the outer threaded sleeve. The rear end of the outer threaded sleeve is provided with an outer threaded sleeve recess, and a handle or force rod can be detachably inserted into the outer threaded sleeve recess.
5. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The rear end of the positioning screw is fixedly installed with a screw end, which has a through hole that is perpendicular to the central axis of the positioning screw. A handle or a force-applying rod can be detachably installed in the through hole.
6. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The tensioning connecting rods are provided in two sets, which are hinged at equal intervals to the circumferential outer wall of the inner threaded sleeve. Each set of tensioning connecting rods includes a first connecting rod and a double tensioning connecting rod that are hinged in sequence. The movable end of the first connecting rod is hinged to the inner threaded sleeve, and the movable end of the double tensioning connecting rod is hinged to the inner top wall of the docking part in the positioning clamp.
7. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 6, characterized in that: The outer wall of the double-track tensioning link is provided with an anti-slip pad.
8. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The pull claw connecting rod has at least two rods, which are fixedly installed at equal intervals on the circumferential outer wall of the pull claw thread sleeve, and the pull claw is hinged to the outer end of the rod.
9. A quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 8, characterized in that: The positioning claw also includes multiple spring tensioning devices, which correspond one-to-one with the claw. Each spring tensioning device includes a tensioning spring and two spring fixing lugs. One spring fixing lug is fixed to the inner side of the claw, and the other spring fixing lug is fixed to the front side of the claw connecting rod. The two ends of the tensioning spring are respectively connected to the two spring fixing lugs in the same group. The outer end of the pull claw connecting rod is also fixed with a forward-extending pull claw limiting block, located on the inner side of the corresponding pull claw.
10. The quick-connect clamp welding and positioning device for conveying fluid pipes according to claim 1, characterized in that: The front end of the pull claw has a chamfered bevel structure.