Polyene electric power tube easy to thread

Abstract

The utility model relates to the technical field of electric power tubes, and discloses an easy-to-thread polyene electric power tube, which comprises a tube body, a flexible connecting column and a plurality of balls, the inner wall of the tube body is provided with a mounting groove along the circumferential direction, the cross section of the mounting groove is of a convex structure, the flexible connecting column penetrates through the balls, and the balls are provided with through holes corresponding to the positions where the flexible connecting column penetrates through. Fixing pieces are arranged at the two ends, corresponding to the through holes, of the balls, and the balls are slidably embedded in the mounting grooves. In the application, the mounting groove, the ball and the flexible connecting column are arranged in the pipe body, when the ball is mounted in the mounting groove, the mounting groove can prevent the ball from falling out and can enable at least one part of the cambered surface of the ball to protrude out of the mounting groove, so that a cable can be in contact with the cambered surface during penetration, the contact area of the cable and the pipe body is reduced, friction is reduced, penetration is facilitated, and the service life of the cable is prolonged. The flexible connecting columns are used for fixing the distance between the adjacent balls, so that the balls are evenly distributed on the inner wall of the pipe body in the circumferential direction.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power pipes, in particular to a polyolefin electric power pipe which is easy to thread. Background Art

[0002] Power pipes are made of polypropylene, polyethylene, polyvinyl chloride and other polyolefins as the main raw materials. They are widely used in buried cable projects. The laying methods are mainly excavation and trenchless. Trenchless does not require mud, excavation or damage to the road surface. It is usually used in special areas such as roads, railways, buildings, and riverbeds for laying pipelines, cables and other construction projects.

[0003] When threading cables through existing power pipes, the power cables will come into direct contact with the pipe wall, which increases friction and makes threading more difficult. In addition, since the diameter of the polyolefin power pipe is large, more cables are installed inside it. These cables are crossed and stacked together, which not only affects the subsequent maintenance and replacement, but also generates a lot of heat when the cables are working. The thermal performance inside traditional power pipes is poor, posing a great safety hazard. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a polyolefin electric pipe that is easy to thread, so as to solve the problem that the traditional electric pipe is difficult to thread.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A polyolefin electric power tube that is easy to thread, comprises a tube body, a flexible connecting column and a plurality of balls, wherein the inner wall of the tube body is provided with a mounting groove along the circumferential direction, the cross section of the mounting groove is a convex structure, the flexible connecting column passes through the balls, through holes are provided at the places where the flexible connecting column passes through the balls, fixing plates are provided at both ends of the through holes corresponding to the balls, and the balls are slidably embedded in the mounting grooves.

[0007] In the present application, a mounting groove and a ball are provided in the tube body. When the ball is installed in the mounting groove, the mounting groove prevents the ball from falling out while enabling at least a portion of the arc surface of the ball to protrude from the mounting groove, so that the cable can contact the arc surface during threading, thereby reducing the contact area between the cable and the tube body, reducing friction, and facilitating threading. In order to ensure that the balls are evenly distributed, the present application uses flexible connecting columns and fixing plates to fix the distance between adjacent balls, so that the balls are evenly distributed on the circumferential direction of the inner wall of the tube body.

[0008] Furthermore, it also includes an isolation frame, which is composed of multiple isolation plates with one end fixed to the axis of the tube body and the other end distributed radially along the tube body. The isolation plate is fixed to the tube body near one end of the tube body, and the isolation plate is provided with multiple sliding columns along the radial direction of the tube body.

[0009] In the present application, an isolation frame is provided inside the tube body to isolate the cables and prevent heat accumulation caused by cable accumulation. Sliding columns are also provided on the surface of the isolation frame to support the cables, reduce the contact area between the cables and the tube body, and facilitate the installation of the cables.

[0010] Furthermore, the isolation plate is provided with an opening corresponding to the mounting groove.

[0011] In the present application, when the isolation plate and the ball are used at the same time, in order to prevent the isolation plate from affecting the sliding process of the ball in the installation groove during installation, an opening is provided on the isolation plate for the ball to pass through, and the ball or isolation plate can be separately provided when the device is in use.

[0012] Furthermore, the tube body is provided with a mounting hole which penetrates from the peripheral side to the mounting groove, and the mounting hole is used for mounting the ball and the flexible connecting column.

[0013] In the present application, a mounting hole for installing the ball is provided on the tube body, and the mounting hole can be closed after the ball is installed. In actual use, the mounting hole can be set as a threaded hole, and a nut can be used for closing.

[0014] Furthermore, a plurality of heat dissipation grooves are arranged on the circumference of the tube body, and the heat dissipation grooves are arranged along the length direction of the tube body.

[0015] In the present application, heat dissipation grooves are arranged on the circumference of the tube body to increase the heat dissipation area of ​​the tube body and improve the heat dissipation rate.

[0016] Furthermore, a plurality of reinforcing columns are provided on the circumference of the tube body, and the reinforcing columns are arranged along the length direction of the tube body.

[0017] In the present application, a plurality of reinforcing columns are arranged around the pipe body to improve the bending resistance of the cable pipe so that the power pipe is not easily broken when used underground.

[0018] Beneficial effects of the utility model:

[0019] 1. In the present application, a mounting groove and a ball are provided in the tube body. When the ball is installed in the mounting groove, the mounting groove prevents the ball from falling out while enabling at least a portion of the arc surface of the ball to protrude from the mounting groove, so that the cable can contact the arc surface during threading, thereby reducing the contact area between the cable and the tube body, reducing friction, and facilitating threading. To ensure that the balls are evenly distributed, the present application uses flexible connecting columns and fixing plates to fix the distance between adjacent balls, so that the balls are evenly distributed on the circumferential direction of the inner wall of the tube body.

[0020] 2. In this application, an isolation frame is provided inside the tube body to isolate the cables and prevent heat accumulation caused by cable accumulation. Sliding columns are also provided on the surface of the isolation frame to support the cables, reduce the contact area between the cables and the tube body, and facilitate the laying of the cables.

[0021] 3. In the present application, heat dissipation grooves are arranged around the tube body to increase the heat dissipation area of ​​the tube body and improve the heat dissipation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a connection diagram of the balls in the utility model;

[0024] in,

[0025] 10. Tube body; 11. Mounting slot; 12. Mounting hole; 13. Heat dissipation slot; 14. Reinforcement column;

[0026] 21. Ball bearing; 22. Flexible connecting column; 23. Isolation frame; 231. Isolation plate; 232. Sliding column; 233. Opening; 24. Fixed sheet. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0028] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] like Figure 1-2As shown, the present application provides a polyolefin power tube that is easy to thread. The power tube includes a tube body 10, a flexible connecting column 22 and a plurality of balls 21. The tube body 10 is used for threading cables. The inner wall of the tube body 10 is provided with a mounting groove 11 along the circumference. The cross-section of the mounting groove 11 is a convex structure. The ball 21 is slidably arranged in the mounting groove 11. The convex mounting groove 11 can prevent the ball 21 from falling out while allowing a part of the arc surface of the ball 21 to protrude from the mounting groove 11, thereby supporting the threaded cables, reducing the contact area between the cables and the inner wall of the tube body 10, and reducing friction.

[0030] The present application evenly distributes the ball 21 in the mounting groove 11. Specifically, it also includes a flexible connecting column 22. The flexible connecting column 22 runs through the ball 21. The ball 21 is provided with a through hole for the flexible connecting column 22 to pass through. Fixed plates 24 are provided at both ends of the through hole corresponding to the ball 21. The fixed plate 24 is used to fix the position of the ball 21 on the flexible connecting column 22 to prevent the ball from sliding along the flexible connecting column 22. The fixed plate 24 is arranged on the peripheral side of the flexible connecting column 22, and the ball 21 is fixed by the friction force between the flexible connecting column 22 and the flexible connecting column 22. In this way, it is convenient to arrange the ball 21 in the mounting groove 11.

[0031] When the present application is used, a mounting hole 12 is provided on the tube body 10, which runs through the peripheral side to the mounting groove 11. This facilitates the installation of the ball 21 and the flexible connecting column 22 into the mounting groove 11. Preferably, the flexible connecting column 22 can be a hard plastic with certain deformation performance. The mounting hole 12 can be set as a threaded hole, so that it can be closed by a nut or other device after the installation is completed to prevent the ball 21 from falling out.

[0032] The device also includes an isolation frame 23. The isolation frame 23 is composed of a plurality of isolation plates 231, one end of which is fixed to the axis of the tube body 10 and the other end is distributed radially along the tube body 10. The isolation plate 231 is fixed to the tube body 10 at one end close to the tube body 10. The isolation frame 23 is used to isolate the cables to prevent heat accumulation caused by cable accumulation.

[0033] A plurality of sliding posts 232 are provided on the isolation frame 23 along the radial direction of the tube body 10. The sliding posts 232 are preferably arc-shaped sliding posts, so that the sliding posts 232 can support the cable and reduce the contact area. When the isolation plate 231 is used together with the ball bearing, an opening 233 is provided at the isolation plate 231 corresponding to the mounting groove 11. The opening 233 is used for the ball bearing 21 to pass through when it is installed in the mounting groove 11.

[0034] The outer circumference of the tube body 10 is provided with a plurality of heat dissipation grooves 13 along the length direction. The present application increases the heat dissipation area of ​​the tube body 10 and the heat dissipation efficiency of the tube body 10 , and the heat dissipation grooves 13 can improve the bending resistance of the tube body 10 .

[0035] A plurality of reinforcing columns 14 are also provided on the outer circumference of the pipe body 10. The reinforcing columns 14 are arranged along the length direction of the pipe body 10, so as to improve the stress bearing performance of the pipe body 10 and prevent the pipe from breaking when used underground.

[0036] When in use, the present application can provide multiple sets of flexible connecting columns 22 and balls 21, which are arranged along the length direction of the tube body 10, so as to reduce the contact area between the cable and the inner wall of the tube body 10 during the cable threading process, thereby facilitating threading.

[0037] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A polyolefin power pipe that is easy to thread, characterized in that: The invention comprises a tube body (10), a flexible connecting column (22) and a plurality of balls (21); the inner wall of the tube body (10) is provided with a mounting groove (11) along the circumferential direction; the cross section of the mounting groove (11) is a convex structure; the flexible connecting column (22) penetrates the balls (21); through holes are provided at the locations where the balls (21) are provided corresponding to the locations where the flexible connecting column (22) is provided; fixing plates (24) are provided at the two ends of the through holes corresponding to the balls (21); and the balls (21) are slidably embedded in the mounting groove (11).

2. The polyolefin electric power pipe that is easy to thread according to claim 1, characterized in that: It also comprises an isolation frame (23), the isolation frame (23) being composed of a plurality of isolation plates (231), one end of the isolation plate (231) being fixedly connected to the axis of the tube body (10), and the other end being distributed radially along the tube body (10), and one end of the isolation plate (231) close to the tube body (10) being fixedly connected to the tube body (10).

3. The polyolefin electric power pipe that is easy to thread according to claim 2, characterized in that: The isolation plate (231) is provided with a plurality of sliding columns (232) along the radial direction of the tube body (10).

4. The polyolefin electric power pipe that is easy to thread according to claim 2, characterized in that: The isolation plate (231) is provided with an opening (233) corresponding to the mounting groove (11).

5. The polyolefin electric power pipe that is easy to thread according to claim 2, characterized in that: The tube body (10) is provided with a mounting hole (12) which penetrates from the peripheral side to the mounting groove (11), and the mounting hole (12) is used for mounting the ball (21) and the flexible connecting column (22).

6. The polyolefin electric power pipe that is easy to thread according to claim 1, characterized in that: A plurality of heat dissipation grooves (13) are provided on the outer peripheral side of the tube body (10), and the heat dissipation grooves (13) are arranged along the length direction of the tube body (10).

7. The polyolefin electric power pipe that is easy to thread according to claim 1, characterized in that: A plurality of reinforcing columns (14) are provided on the outer peripheral side of the tube body (10), and the reinforcing columns (14) are arranged along the length direction of the tube body (10).

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