C-PVC power cable protection pipe

Abstract

The utility model discloses a C-PVC power cable protection tube, which relates to the technical field of cable protection tubes and comprises a base end, a protection tube is arranged on the outer edge of one end of the base end, a lining tube is slidably arranged in the protection tube, the length of the lining tube is smaller than that of the protection tube, and the protection tube and the lining tube are of a split structure. During use, the lining pipe and the protection pipe are assembled together, the lining pipe can form auxiliary support for the protection pipe, the overall strength of the device is improved, the device is not prone to deformation after being buried underground, the protection effect of the device on a cable is guaranteed, the end block is clamped through supporting of the limiting spring for the limiting block, fixing of the lining pipe is achieved, the lining pipe is pushed towards one side, and the protection effect of the device on the cable is improved. When the lining pipe needs to be replaced, the sliding block extrudes the limiting block towards the outer side, at the moment, a complete ball formed by the sliding block and the end block can easily push away the limiting block towards the outer side, and therefore the lining pipe can be directly taken out, independent replacement of the lining layer is achieved, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection tubes, in particular to a C-PVC power cable protection tube. Background Art

[0002] Cable protection tube is also known as cable tube, power cable tube, cement cable tube, power pipe, power cable protection tube, etc. Cable protection tube is mainly installed in the section where communication cables and power lines intersect to prevent power lines from being broken and causing short circuit accidents, causing communication cables and wire ropes to be electrified, so as to protect cables, switches, movement boards, and even the entire machine from being burned out, and also plays a certain isolation role against the magnetic field interference of power lines. Some existing cable protection tubes will use C-PVC material, which is also called chlorinated polyvinyl chloride. It is a material obtained by modifying polyvinyl chloride through chlorination reaction. Using it as the material of cable protection tube can improve the corrosion resistance and life of cable protection tube underground.

[0003] When the C-PVC cable protection tube is in use, an inner lining will be laid inside it to play a flame retardant and waterproof role. However, when the cable protection tube is buried underground, the underground environment is relatively humid, and the flame retardant and waterproof lining will greatly reduce its flame retardant and waterproof effect after being exposed to moisture. The existing practice is often to replace the PVC cable protection tube as a whole. This method is certainly efficient, but it also directly leads to a significant increase in maintenance costs, which is not conducive to cost control and resource conservation. Utility Model Content

[0004] The purpose of the utility model is to provide a C-PVC power cable protection tube to solve the technical problems mentioned in the above background technology.

[0005] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0006] A C-PVC power cable protection tube includes a base end;

[0007] A protective tube is provided on the outer edge of one end of the base end, an inner lining tube is provided for sliding inside the protective tube, and the length of the inner lining tube is smaller than the protective tube, a connecting shaft is symmetrically provided on the end of the inner lining tube close to the base end, an end block is provided on one end of the connecting shaft, a sliding block is provided on the outer sliding sleeve of the connecting shaft, and a limit baffle for limiting the sliding block is provided on the outer side of the connecting shaft;

[0008] The base end is provided with a protective tube at one end thereof, which is provided with a snap-fitting groove matching the end block, and the snap-fitting groove is located on the inner side of the protective tube, and side grooves are symmetrically provided on the inner walls on both sides of the snap-fitting groove, and a limiting spring is provided inside the side groove, and a limiting block is provided at one end of the limiting spring.

[0009] As a further solution of the present invention: the materials of the base end, the protective tube and the inner lining tube are all chlorinated polyvinyl chloride, and a cavity for placing the cable is opened through the base end and the inner lining tube.

[0010] As a further solution of the present invention: an inner lining layer is laid on the inner wall of the inner lining pipe, and the inner lining layer is made of waterproof and flame-retardant material.

[0011] As a further solution of the present invention: a plurality of groups of intermittently distributed fitting grooves are formed around the inner wall of the protection tube.

[0012] As a further solution of the present invention: a plurality of groups of raised strips matching the fitting grooves are arranged around the outer side of the inner lining tube.

[0013] Beneficial effects of the utility model:

[0014] In the utility model, the protective tube and the inner lining tube are of split structure, and the two are assembled together when in use. The inner lining tube can form auxiliary support for the protective tube, thereby improving the overall strength of the device and not easily deforming after being buried underground, thereby ensuring the protective effect of the device on the cable. The limit block is supported by the limit spring to engage the end block to fix the inner lining tube, and the inner lining tube is pushed to one side so that the sliding block squeezes the limit block outward. At this time, the complete sphere composed of the sliding block and the end block can easily push the limit block outward, thereby directly taking out the inner lining tube and realizing the separate replacement of the inner lining layer, which greatly reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device in the present utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the inner lining layer of the utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the inner liner pipe in the utility model;

[0019] Figure 4 It is a schematic diagram of the limit spring structure of the utility model.

[0020] In the figure: 1. Base end; 2. Protective tube; 3. Lining tube; 4. Lining layer; 5. Connecting shaft; 6. End block; 7. Sliding block; 8. Limit baffle; 9. Engaging groove; 10. Side groove; 11. Limit spring; 12. Limit block; 13. Engaging groove; 14. Raised strip. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1-3 As shown, a C-PVC power cable protection tube includes a base end 1;

[0023] A protective tube 2 is provided on the outer edge of one end of the base end 1, and an inner lining tube 3 is provided inside the protective tube 2 for sliding, and the length of the inner lining tube 3 is smaller than the protective tube 2. The materials of the base end 1, the protective tube 2 and the inner lining tube 3 are all chlorinated polyvinyl chloride, and the base end 1 and the inner lining tube 3 are penetrated to form a cavity for placing the cable. The base end 1, the protective tube 2 and the inner lining tube 3 constitute the overall structure of the device, providing an installation position for other structures and ensuring the stability of other structures when in use. The inner lining tube 3 is close to the base end 1. The end of the connecting shaft 5 is symmetrically provided with a connecting shaft 5, one end of the connecting shaft 5 is provided with an end block 6, the outer sliding sleeve of the connecting shaft 5 is provided with a sliding block 7, the end block 6 and the sliding block 7 are both hemispherical, the outer side of the connecting shaft 5 is provided with a limit baffle 8 for limiting the sliding block 7, the base end 1 is provided with a protective tube 2 at one end thereof, and a snap-fit groove 9 matching the end block 6 is opened, and the snap-fit groove 9 is located on the inner side of the protective tube 2, and the inner walls on both sides of the snap-fit groove 9 are symmetrically provided with side grooves 10, and a limit spring 1 is provided inside the side groove 10. 1. A limit block 12 is provided at one end of the limit spring 11. The limit block 12 is a right triangle, and its bevel is close to the sliding block 7. When the device is in use, the staff can slide the liner tube 3 into the interior of the protective tube 2. When sliding, the end block 6 at one end of the connecting shaft 5 squeezes the limit block 12 outward, so that the limit spring 11 is compressed, and the limit block 12 is recovered into the side groove 10. At this time, the limit block 12 is between the end block 6 and the sliding block 7, the pressure disappears, and the limit block 12 is reset and stuck between the end block 6 and the sliding block 7. The sliding blocks 7 form a stable fixation for the inner lining tube 3. When the inner lining layer 4 needs to be replaced, the staff continues to push the inner lining tube 3 to one side, so that the sliding block 7 squeezes the limit block 12 outward. When the sliding block 7 passes the limit block 12, the staff can pull the inner lining tube 3 outward, and the sliding block 7 moves closer to the end block 6 along the connecting axis 5. At this time, the complete sphere composed of the sliding block 7 and the end block 6 can easily push the limit block 12 outward, so that the inner lining tube 3 can be directly taken out easily and conveniently.

[0024] In addition, the length of the inner lining tube 3 is smaller than the protective tube 2, so after the inner lining tube 3 is inserted into the protective tube 2, the inner lining tube 3 is completely immersed in the protective tube 2, and the end away from the base end 1 is not easily squeezed, thereby greatly reducing the external collision on the inner lining tube 3 and the phenomenon of slipping.

[0025] In this embodiment, specifically, an inner lining layer 4 is laid on the inner wall of the inner lining tube 3. The inner lining layer 4 is a waterproof and flame-retardant material, which can provide good waterproof and flame-retardant protection for the cables laid inside when in use.

[0026] In this embodiment, specifically, a plurality of groups of interlaced grooves 13 are provided around the inner wall of the protective tube 2, and a plurality of groups of raised strips 14 matching the interlaced grooves 13 are provided around the outer side of the lining tube 3. When in use, the raised strips 14 provided on the outer side of the lining tube 3 are docked and inserted into the interlaced grooves 13 provided on the inner wall of the protective tube 2, and the two can be assembled. The lining tube 3 can form auxiliary support for the protective tube 2, thereby further improving the overall strength of the device during use, and it is not easy to deform after being buried underground, thereby ensuring the protection effect of the device for the cable, and the cooperation of the raised strips 14 and the interlaced grooves 13 greatly increases the contact area between the lining tube 3 and the protective tube 2, further improving the stability of the two during assembly, and is not prone to loosening or displacement.

[0027] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A C-PVC power cable protection tube, comprising a base end (1); characterized in that: A protective tube (2) is provided on the outer edge of one end of the base end (1), an inner lining tube (3) is provided in a sliding manner inside the protective tube (2), and the length of the inner lining tube (3) is smaller than that of the protective tube (2), a connecting shaft (5) is symmetrically provided on one end of the inner lining tube (3) close to the base end (1), an end block (6) is provided on one end of the connecting shaft (5), a sliding block (7) is provided on the outer sliding sleeve of the connecting shaft (5), and a limit baffle (8) for limiting the sliding block (7) is provided on the outer side of the connecting shaft (5); The base end (1) is provided with a protective tube (2), one end of which is provided with a snap-fitting groove (9) matching the end block (6), and the snap-fitting groove (9) is located on the inner side of the protective tube (2), and side grooves (10) are symmetrically provided on the inner walls of both sides of the snap-fitting groove (9), a limiting spring (11) is provided inside the side groove (10), and a limiting block (12) is provided at one end of the limiting spring (11).

2. A C-PVC power cable protection tube according to claim 1, characterized in that: The base end (1), the protective tube (2) and the inner lining tube (3) are all made of chlorinated polyvinyl chloride, and a cavity for placing a cable is provided through the base end (1) and the inner lining tube (3).

3. The C-PVC power cable protection tube according to claim 1, characterized in that: An inner lining layer (4) is laid on the inner wall of the inner lining pipe (3), and the inner lining layer (4) is made of waterproof and flame-retardant material.

4. The C-PVC power cable protection tube according to claim 1, characterized in that: The inner wall of the protection tube (2) is surrounded by a plurality of groups of intermittently distributed interlocking grooves (13).

5. The C-PVC power cable protection tube according to claim 1, characterized in that: The outer side of the inner lining tube (3) is surrounded by a plurality of groups of raised strips (14) that match the engaging grooves (13).

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