Foldable limiting anti-falling clamp for double-wall corrugated pipe connection

Abstract

The utility model discloses a kind of foldable type limiting anti-off clips for double-wall corrugated pipe connection, including corrugated pipe clamping assembly, center connecting piece and foldable limiting anti-off structure.Corrugated pipe clamping assembly contains first sleeve and second sleeve, double-wall corrugated pipe is connected to two ends, and it is half-enclosed structure;Center connecting piece is elastic corrugated sleeve, is sleeved in the outside of connecting position, and two ends are detachably connected with sleeve;Limiting anti-off structure contains first and second clamping jaw hinged to sleeve, can be folded towards and be fixed by locking member.The device is cooperated by multiple components, effectively limits and prevents the double-wall corrugated pipe connecting position, improves the connection stability, and folding design is adapted to narrow construction space, convenient to install, suitable for double-wall corrugated pipe connection scene.

Description

Technical Field

[0001] This utility model provides a limiting anti-detachment clip, and particularly relates to a foldable limiting anti-detachment clip for connecting double-wall corrugated pipes. Background Technology

[0002] In the construction of double-wall corrugated pipe connections, specialized connection devices are required to ensure the stability of the pipe connection. These devices are collectively referred to as double-wall corrugated pipe connection fittings. Their function is to achieve axial limiting and radial fixation of the pipe, preventing detachment or misalignment due to external forces (such as soil compression or fluid impact) during use, and ensuring the sealing and smooth flow of the pipeline system. Existing basic connection structures generally use simple ferrules and bolts for fixing. That is, two separate ferrules are fitted onto both ends of the pipe, and bolts are used to initially fix the ferrules to the pipe. While this provides some connection force, it has significant drawbacks:

[0003] On the one hand, the fitting between the ferrule and the pipe is poor, and it lacks a semi-enclosed anti-slip structure that is adapted to the outer wall of the double-wall corrugated pipe. It is prone to relative sliding due to pipe vibration, soil creep, etc., and cannot effectively limit axial movement.

[0004] On the other hand, the lack of flexible adaptation and foldable anti-detachment design between connecting components, the absence of structures such as elastic corrugated sleeves that can be freely bent and adapt to the deformation of pipe connection parts, makes it difficult to cope with the stress generated by the thermal expansion and contraction of pipes and foundation settlement. In addition, traditional fasteners cannot be flexibly adjusted after installation, and structures such as foldable claws that can enhance the limiting and anti-detachment effect are not set. When facing complex working conditions (such as narrow construction spaces), the installation and operation are difficult, and it is impossible to effectively enclose and limit the position. Long-term use is prone to loosening and separation of the connection, affecting the normal operation of the pipeline system. Utility Model Content

[0005] In order to solve the above problems, this application provides a foldable limiting and anti-detachment clamp for connecting double-wall corrugated pipes, which solves the problems of poor fit, easy slippage and insufficient limiting of existing connection devices, while overcoming the defects of inconvenient installation and weak adaptability, and achieves a stable connection and convenient construction.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes, including a corrugated pipe engaging assembly adapted to the outer contour of the connection part of the double-wall corrugated pipe, a central connecting member for connecting and limiting the corrugated pipe engaging assembly, and a foldable limiting and anti-detachment structure.

[0007] The corrugated pipe clamping assembly includes a first clamp and a second clamp respectively sleeved on the two ends of the double-walled corrugated pipe to be connected. The first clamp and the second clamp are both semi-enclosed structures adapted to the outer wall of the double-walled corrugated pipe, and the two are arranged opposite to each other.

[0008] The central connector is a flexible corrugated sleeve that can be freely bent and is sleeved on the outside of the connection part of the double-wall corrugated pipe. The two ends of the flexible corrugated sleeve are detachably connected to the first ferrule and the second ferrule, respectively.

[0009] The foldable limiting and anti-detachment structure includes a first claw hinged to the first sleeve and a second claw hinged to the bottom of the second sleeve. The first claw and the second claw can be folded towards each other and fixed to each other with the bellows engagement assembly by the locking member. The first claw and the second claw surround the outer side of the elastic bellows and limit its movement, while also axially limiting and preventing detachment of the double-walled bellows connection part.

[0010] Preferably, the inner side of the semi-enclosed structure of the first and second ferrules is provided with anti-slip texture that is adapted to the outer wall of the double-walled corrugated pipe, and the anti-slip texture extends along the axial direction of the first and second ferrules.

[0011] Preferably, the elastic corrugated sleeve has annular connecting flanges at both ends, and the first and second ferrules have annular connecting grooves that are adapted to the annular connecting flanges at the ends near the elastic corrugated sleeve. The annular connecting flanges are inserted into the annular connecting grooves to achieve a detachable connection between the elastic corrugated sleeve and the first and second ferrules.

[0012] Preferably, the first claw includes a first hinge portion hinged to the first ferrule and a first engaging portion extending to the second ferrule, the second claw includes a second hinge portion hinged to the second ferrule and a second engaging portion extending to the first ferrule, the first engaging portion and the second engaging portion are provided with corresponding locking holes, and the locking member is a locking bolt and nut assembly passing through the locking hole.

[0013] Preferably, the inner wall of the elastic corrugated sleeve is provided with an annular limiting protrusion, which is adapted to the annular groove of the connection part of the double-wall corrugated pipe to radially limit the connection part of the double-wall corrugated pipe.

[0014] Preferably, both ends of the first and second ferrules are provided with annular retaining edges for limiting the ends of the double-walled corrugated pipe, and the annular retaining edges extend radially inward along the first and second ferrules.

[0015] One or more technical solutions provided in this application embodiment have at least the following technical effects or advantages compared with the prior art:

[0016] This application addresses the aforementioned shortcomings of the device: the first and second clamping sleeves of the corrugated pipe clamping assembly have a semi-enclosed structure with anti-slip textures on the inner side, fitting snugly against the outer wall of the double-walled corrugated pipe, and the annular flanges at both ends reinforce the end-positioning; the central connector uses a freely bendable elastic corrugated sleeve, which is detachably connected to the clamping sleeve via an annular connecting flange, and the annular limiting protrusion on the inner wall adapts to the annular groove of the pipe to achieve radial positioning; in the foldable positioning and anti-detachment structure, the first and second claws are hinged to the clamping sleeve and folded and fixed by a locking bolt and nut assembly, forming a double axial positioning around the outer side of the elastic corrugated sleeve. Through these structural improvements, the problems of poor fit, weak positioning, and insufficient installation adaptability of the existing device are solved, improving the stability of the double-walled corrugated pipe connection and the ease of construction.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to the present invention.

[0019] Figure 2 This is an exploded view of the claw of a foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to the present invention.

[0020] Figure 3 This is a cross-sectional view of a foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to the present invention.

[0021] As shown in the figure:

[0022] 1. Corrugated pipe clamping assembly;

[0023] 11. First card sleeve; 12. Second card sleeve;

[0024] 2. Central connector;

[0025] 3. Limiting and anti-detachment structure;

[0026] 31. First jaw; 32. Second jaw. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] like Figure 1-3 As shown, a foldable limiting and anti-detachment clamp for connecting double-wall corrugated pipes includes a corrugated pipe engaging assembly 1 adapted to the outer contour of the connection part of the double-wall corrugated pipe, a central connecting member 2 for connecting and limiting the corrugated pipe engaging assembly 1, and a foldable limiting and anti-detachment structure 3. The corrugated pipe engaging assembly 1 includes a first sleeve 11 and a second sleeve 12 respectively fitted onto the two ends of the double-wall corrugated pipe to be connected. Both the first sleeve 11 and the second sleeve 12 are semi-enclosed structures adapted to the outer wall of the double-wall corrugated pipe and are arranged opposite to each other. The central connecting member 2 is a freely bendable elastic corrugated sleeve fitted onto the outside of the connection part of the double-wall corrugated pipe, with its two ends detachably connected to the first sleeve 11 and the second sleeve 12 respectively. Specifically, the elastic corrugated sleeve has annular connecting flanges at both ends, and the first sleeve 11 and the second sleeve 12 have annular connecting flanges at their ends near the elastic corrugated sleeves. The flange-fitted annular connecting groove is connected by the annular connecting flange snapping into the annular connecting groove. The foldable limiting and anti-detachment structure 3 includes a first claw 31 hinged to the first sleeve 11 and a second claw 32 hinged below the second sleeve 12. The first claw 31 includes a first hinge portion hinged to the first sleeve 11 and a first engaging portion extending to the second sleeve 12. The second claw 32 includes a second hinge portion hinged to the second sleeve 12 and a second engaging portion extending to the first sleeve 11. The first engaging portion and the second engaging portion are provided with corresponding locking holes. The locking element is a locking bolt and nut assembly passing through the locking hole, so that the first claw 31 and the second claw 32 can be folded towards each other and fixed to each other with the bellows engaging assembly 1 by the locking element, and are surrounded on the outside of the elastic bellows sleeve for limiting their position, while axially limiting and preventing detachment of the double-walled bellows connection part.

[0031] In this embodiment, the first ferrule 11 and the second ferrule 12 fit tightly against the outer wall of the double-walled corrugated pipe through a semi-enclosed structure. The anti-slip texture on the inner side enhances friction and prevents relative slippage, while the annular flanges at both ends restrict the axial movement of the pipe, solving the problems of poor fit and easy slippage of traditional ferrules. The central connector 2 adopts a flexible corrugated sleeve that can be bent freely. It is detachably connected to the annular connecting groove of the ferrule through the annular connecting flange, which not only achieves a flexible connection between the two ferrules but also facilitates installation and disassembly. Its inner wall annular limiting protrusion matches the annular groove of the pipe to form a radial limit, overcoming the problems of traditional ferrules. The rigid connection of the fixed component cannot adapt to the deformation of the pipeline. In the foldable limiting and anti-detachment structure 3, the first claw 31 and the second claw 32 realize the folding function through hinge, which can adapt to the installation requirements of narrow space. After folding, it is fixed by locking bolt and nut assembly, which surrounds the outer side of the elastic corrugated sleeve to form double axial limiting, further enhancing the anti-detachment effect. The synergistic effect of each structure not only ensures the stability of the connection, but also improves the convenience of installation and adaptability to complex working conditions. Compared with the existing technology, it has significant improvements in limiting and anti-detachment, installation flexibility and structural adaptability.

[0032] In actual use, the outer wall and socket surface of the double-wall corrugated pipe to be connected should be cleaned with a rag or other cleaning tools to remove oil and impurities. Then, a suitable rubber sealing ring (existing sealing element) can be fitted onto the socket of the double-wall corrugated pipe to enhance the connection sealing. Next, the first ferrule 11 and the second ferrule 12 (both can be made of polyamide 66 engineering plastic, which has both strength and corrosion resistance) are respectively fitted onto the two ends of the double-wall corrugated pipe to be connected. During the process, a measuring tape can be used to help calibrate the position to ensure that the first ferrule 11 and the second ferrule 12 are in a corresponding and parallel state. Then, the annular connecting flanges at both ends of the elastic corrugated sleeve made of EPDM rubber are aligned with the annular connecting groove of the ferrule and inserted. After that, the first claw 31 and the second claw 32 are folded towards each other through the hinge structure so that the two engaging parts are aligned. Finally, the locking bolt and nut assembly is passed through the locking hole and tightened with a wrench to complete the overall installation.

[0033] Specifically, before the formal installation of this device, the outer wall of the double-walled corrugated pipe socket can be sanded with 80-grit sandpaper to remove the oxide layer and burrs, preventing sharp edges from scratching the elastic corrugated sleeve or rubber sealing ring. If there is a lot of dust in the construction environment, a small amount of silicone-based grease (an existing lubricating medium) can be applied to the contact surface between the ferrule and the pipe. This facilitates the fitting of the ferrule without affecting the friction effect of the anti-slip texture. When applying, use a brush to spread it evenly, and the amount should be such that it does not overflow the edge of the ferrule. When installing the elastic corrugated sleeve, if the annular connecting flange and the connecting groove fit too tightly, a plastic pry bar (to avoid scratching the parts) can be used to gently tap the edge of the flange to help it be inserted. Do not use metal tools to strike it directly. After installation, in addition to routine water pressure testing, a feeler gauge can be used to check the fit gap between the first jaw 31 and the second jaw 32 to ensure that the gap does not exceed 0.5mm. If a gap exists, it can be eliminated by adjusting the bolt and nut assembly. In daily maintenance, the surface of the elastic corrugated sleeve can be wiped with a soft cloth dipped in neutral detergent every quarter to prevent the accumulation of dirt from affecting its elasticity. If rust is found on the locking bolts, anti-rust paint (existing anti-rust materials) can be applied to treat it and extend the service life of the device.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes, characterized in that, It includes a bellows engagement assembly (1) adapted to the outer contour of the connection part of the double-walled bellows, a central connector (2) for connecting and limiting the bellows engagement assembly (1), and a foldable limiting and anti-detachment structure (3). The corrugated pipe clamping assembly (1) includes a first clamp (11) and a second clamp (12) respectively sleeved on the two ends of the double-wall corrugated pipe to be connected. The first clamp (11) and the second clamp (12) are both semi-enclosed structures adapted to the outer wall of the double-wall corrugated pipe, and the two are arranged opposite to each other. The central connector (2) is a flexible corrugated sleeve that can be freely bent and is sleeved on the outside of the connection part of the double-wall corrugated pipe. The two ends of the flexible corrugated sleeve are detachably connected to the first ferrule (11) and the second ferrule (12) respectively. The foldable limiting and anti-detachment structure (3) includes a first claw (31) hinged to the first sleeve (11) and a second claw (32) hinged to the bottom of the second sleeve (12). The first claw (31) and the second claw (32) can be folded towards each other and fixed to the bellows engagement assembly (1) by locking member. The first claw (31) and the second claw (32) surround the outer side of the elastic bellows and limit its position. At the same time, they limit the axial position of the double-walled bellows connection part to prevent detachment.

2. The foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to claim 1, characterized in that, The inner side of the semi-enclosed structure of the first ferrule (11) and the second ferrule (12) is provided with anti-slip texture that is adapted to the outer wall of the double-wall corrugated pipe, and the anti-slip texture extends along the axial direction of the first ferrule (11) and the second ferrule (12).

3. A foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to claim 1, characterized in that, The elastic corrugated sleeve has annular connecting flanges at both ends. The first sleeve (11) and the second sleeve (12) have annular connecting grooves that are adapted to the annular connecting flanges at the ends near the elastic corrugated sleeve. The annular connecting flanges are inserted into the annular connecting grooves to achieve a detachable connection between the elastic corrugated sleeve and the first sleeve (11) and the second sleeve (12).

4. A foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to claim 1, characterized in that, The first claw (31) includes a first hinge portion hinged to the first sleeve (11) and a first engaging portion extending to the second sleeve (12). The second claw (32) includes a second hinge portion hinged to the second sleeve (12) and a second engaging portion extending to the first sleeve (11). The first engaging portion and the second engaging portion are provided with corresponding locking holes. The locking member is a locking bolt and nut assembly passing through the locking hole.

5. A foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to claim 1, characterized in that, The inner wall of the elastic corrugated sleeve is provided with an annular limiting protrusion, which is adapted to the annular groove of the connection part of the double-wall corrugated pipe to radially limit the connection part of the double-wall corrugated pipe.

6. A foldable limiting and anti-detachment clip for connecting double-wall corrugated pipes according to claim 1, characterized in that, Both ends of the first sleeve (11) and the second sleeve (12) are provided with annular retaining edges for limiting the ends of the double-walled corrugated pipe. The annular retaining edges extend radially inward along the first sleeve (11) and the second sleeve (12).

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