Cable protection pipe butt joint device for narrow space

Abstract

The utility model relates to a cable protection pipe butt joint device for a narrow space, and belongs to the technical field of cable protection appliances, the cable protection pipe butt joint device for the narrow space comprises symmetrically arranged fixing parts, a locking bolt is connected between the two fixing parts, each fixing part comprises an internal connecting part, an external locking part and a hoop, the internal connecting part comprises an annular ring, and the external locking part comprises an external locking part and a hoop; arc-shaped blocks are symmetrically fixed to the two sides of the annular ring, the connecting positions of the arc-shaped blocks and the annular ring can swing, and a plurality of clamping needles are arranged on the inner walls of the arc-shaped blocks. The arc-shaped block is tightened through the hoop, the clamping needle on the arc-shaped block is inserted into the protection pipe, then the two external locking pieces are oppositely pulled through the locking bolt, and the annular wedge blocks in the external locking pieces are pressed on the surfaces of the arc-shaped wedge blocks of the internal locking pieces, so that the whole butt joint device is firm in connection, easy to operate and firm in connection, soil does not need to be additionally excavated, and the butt joint efficiency is improved. The device is suitable for being used in narrow space and greatly reduces work amount.

Description

Technical Field

[0001] This application relates to the technical field of cable protection devices, and in particular to a cable protection pipe docking device for use in confined spaces. Background Technology

[0002] When installing electrical cables, they are usually buried deep underground. To prevent the electrical cables from being damaged underground, they need to be installed inside a protective conduit, with the conduit protecting the outside of the electrical cables.

[0003] In the existing technology, cable protection pipes are generally made of plastic and are connected by hot-pressing. The connection is convenient and firm. Hot-pressing is generally suitable for ground construction. However, it is difficult to operate in narrow spaces such as pits, making construction more difficult.

[0004] Therefore, there is an urgent need to develop a protective pipe docking device suitable for confined spaces. Utility Model Content

[0005] The purpose of this application is to provide a cable protection pipe docking device for confined spaces to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides a cable protection pipe docking device for confined spaces, employing the following technical solution:

[0007] A cable protection pipe docking device for confined spaces includes symmetrically arranged fixing members, with a locking bolt connecting two of the fixing members. Each fixing member includes an internal connector, an external locking member, and a clamp. The internal connector includes an annular ring with symmetrically fixed arc-shaped blocks on both sides. The arc-shaped blocks are swayable at their connection points with the annular ring. Several locking pins are provided on the inner wall of each arc-shaped block. An annular groove is formed on the side of the annular ring closest to the arc-shaped block, allowing it to engage with the end of the cable protection pipe. Multiple grooves are formed on the outer wall of the arc-shaped block, through which the clamp secures the internal connector. The connector is fixed to the cable protection pipe. The external locking component is sleeved on the arc-shaped block. The inner wall of the external locking component has a clearance groove corresponding to the position of the arc-shaped block. The outer wall of the arc-shaped block has an arc-shaped wedge. The inner wall of the external locking component has an annular wedge that matches the arc-shaped wedge. A flange is fixed on the external locking component. The two fixing components are connected to the flange and fixed together by locking bolts. One flange end face has an annular protrusion. The other flange end face has an annular concave block corresponding to the position of the annular protrusion. A sealing gasket is provided in the annular concave block.

[0008] Preferably, the longitudinal section of the SIM card pin is a right-angled triangle, and the hypotenuse of the right-angled triangle is located on the side away from the annular ring.

[0009] By adopting the above technical solution, the caliper pin is designed in the shape of a right triangle. On the one hand, it can pierce the protective tube from the apex of the triangle. On the other hand, the right-angled side faces the end face of the protective tube, which can position the internal connector and prevent it from sliding.

[0010] Preferably, to avoid damage to the cable caused by the pin, the length of the pin is less than the wall thickness of the cable protection tube.

[0011] Preferably, for ease of installation, the opening edge of the annular concave block is chamfered, and the edge of the annular protrusion block is rounded.

[0012] Preferably, to prevent debris from entering the protective tube, a sealing layer is applied between the external locking member and the cable protection tube.

[0013] The gasket is sealed with liquid sealant.

[0014] In summary, this application includes at least one of the following beneficial technical effects: the cable protection pipe docking device for confined spaces has a novel structure and is relatively easy to install. In use, the two fixing parts are first put on the protection pipes on both sides, the annular ring of the internal connector is clamped on the end face of the protection pipe, and then the arc-shaped block is tightened by the clamp. The pin on the arc-shaped block is inserted into the protection pipe. Then, the two external locking parts are pulled by the locking bolts. The annular wedge inside the external locking part is pressed against the surface of the arc-shaped wedge of the internal locking part, so that the entire docking device is firmly connected. It is easy to operate and has a firm connection. No additional excavation is required, making it suitable for use in confined spaces and greatly reducing the amount of engineering work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure in the usage state of an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 3 This is a structural schematic diagram illustrating the internal connecting member and the external locking member in the embodiments of this application.

[0018] Figure 4 This is an exploded structural diagram illustrating the external locking component in an embodiment of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Locking bolt; 2. Internal connecting part; 21. Annular ring; 22. Arc-shaped block; 23. Pin; 211. Annular groove; 221. Arc-shaped wedge; 3. External locking part; 31. Relief groove; 32. Annular wedge; 33. Flange; 4. Clamp; 5. Annular protrusion; 6. Annular concave block; 7. Pipe. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0021] This application discloses a cable protection pipe docking device for confined spaces, referring to... Figure 1-4 The system includes symmetrically arranged fixing components, with locking bolts 1 connecting the two fixing components. Each fixing component includes an internal connecting component 2, an external locking component 3, and a clamp 4. The internal connecting component 2 includes an annular ring 21, with arc-shaped blocks 22 symmetrically fixed on both sides of the annular ring 21. The connection between the arc-shaped blocks 22 and the annular ring 21 is swayable. Several pins 23 are provided on the inner wall of the arc-shaped blocks 22. An annular groove 211 is provided on the side of the annular ring 21 closest to the arc-shaped blocks 22, allowing it to be engaged with the end of the cable protection pipe. Multiple grooves are provided on the outer wall of the arc-shaped blocks 22, through which the clamp 4 fixes the internal connecting component 2 to the cable protection pipe. The external locking component 3 is fitted onto the arc-shaped blocks 22. The inner wall of the locking component 3 is provided with a clearance groove 31 corresponding to the position of the arc-shaped block 22. The outer wall of the arc-shaped block 22 has an arc-shaped wedge 221. The inner wall of the external locking component 3 has an annular wedge 32 that matches the arc-shaped wedge 221. A flange 33 is fixed on the external locking component 3. The two fasteners are connected to the flange 33 and fixed together by locking bolts 1. One flange 33 has an annular protrusion 5 on its end face. The other flange 33 has an annular concave block 6 at the position corresponding to the annular protrusion 5 on its end face. A sealing gasket is provided in the annular concave block 6. The sealing gasket is sealed with liquid sealant. A chamfer is provided at the opening edge of the annular concave block 6. The edge of the annular protrusion 5 is rounded.

[0022] Reference Figure 3 The longitudinal section of the locator pin 23 is a right triangle, and the hypotenuse of the right triangle is located on the side away from the annular ring 21. The length of the locator pin 23 is less than the wall thickness of the cable protection tube.

[0023] The caliper pin 23 is designed in the shape of a right triangle. On the one hand, it can pierce the protective tube from the apex of the triangle. On the other hand, the right-angled side faces the end face of the protective tube, which can position the internal connector 2 and prevent it from sliding.

[0024] To prevent debris from entering the protective tube, a sealing layer is applied between the external locking element 3 and the cable protection tube.

[0025] The implementation principle of the cable protection pipe docking device for confined spaces in this application embodiment is as follows:

[0026] In use, the two fasteners are first fitted onto the protective tubes on both sides. The annular ring 21 of the internal connector 2 is then clamped onto the end face of the protective tube. The arc-shaped block 22 is then tightened by the clamp 4, and the pin 23 on the arc-shaped block 22 is inserted into the protective tube. Finally, the two external locking parts 3 are pulled together by the locking bolt 1. The annular wedge 32 inside the external locking part 3 is pressed against the surface of the arc-shaped wedge 221 of the internal locking part, thus making the entire docking device firmly connected. The operation is simple and the connection is firm. No additional excavation is required, which greatly reduces the amount of engineering work.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable protection conduit docking device for confined spaces, characterized in that: The device includes symmetrically arranged fasteners, with a locking bolt (1) connecting two of the fasteners. Each fastener includes an internal connector (2), an external locking component (3), and a clamp (4). The internal connector (2) includes an annular ring (21), with arc-shaped blocks (22) symmetrically fixed on both sides of the annular ring (21). The connection between the arc-shaped blocks (22) and the annular ring (21) is swayable. Several pins (23) are provided on the inner wall of the arc-shaped blocks (22). An annular groove (211) is provided on the side of the annular ring (21) near the arc-shaped blocks (22). The annular groove (211) can be locked onto the end of the cable protection pipe. Multiple grooves are provided on the outer wall of the arc-shaped blocks (22). The clamp (4) fixes the internal connector (2) to the cable protection pipe through the grooves. On the pipe, the external locking member (3) is sleeved on the arc-shaped block (22). The inner wall of the external locking member (3) is provided with a relief groove (31) corresponding to the position of the arc-shaped block (22). The outer wall of the arc-shaped block (22) has an arc-shaped wedge (221). The inner wall of the external locking member (3) has an annular wedge (32) that matches the arc-shaped wedge (221). A flange (33) is fixed on the external locking member (3). The two fixing members are connected to the flange (33) and fixed together by locking bolts (1). One flange (33) has an annular protrusion (5) on its end face. The other flange (33) has an annular concave block (6) matching the position of the annular protrusion (5) on its end face. A sealing gasket is provided in the annular concave block (6).

2. The cable protection pipe docking device for confined spaces according to claim 1, characterized in that: The longitudinal section of the SIM card pin (23) is a right triangle, and the hypotenuse of the right triangle is located on the side away from the annular ring (21).

3. The cable protection pipe docking device for confined spaces according to claim 2, characterized in that: The length of the pin (23) is less than the wall thickness of the cable protection tube.

4. The cable protection pipe docking device for confined spaces according to claim 1, characterized in that: The opening edge of the annular concave block (6) is chamfered, and the edge of the annular protrusion (5) is rounded.

5. The cable protection pipe docking device for confined spaces according to claim 1, characterized in that: A sealing layer is applied between the external locking element (3) and the cable protection pipe.

6. The cable protection conduit docking device for confined spaces according to claim 1, characterized in that: The gasket is sealed with liquid sealant.

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