A subway anti-corrosion cable

Abstract

The utility model discloses a subway corrosion-resistant cable, which relates to the field of cables, including a protective tube and a cable arranged inside the protective tube, a positioning joint arranged outside the cable, and the opening of the positioning joint extends along the distribution direction of the cable to form an extension. A fastening sleeve is arranged inside the extension, the fastening sleeve is a funnel-shaped structure, and a plurality of groups of elastic pressing plates are arranged along the annular track at the narrow end of the fastening sleeve. The utility model can be located at the part of the cable exposed to the outside of the power cabinet through the protective tube to protect the cable, avoid the rotting of the cable skin, and improve the service life of the cable. In the process of cables of different diameters passing through the fastening sleeve, the extension and the positioning joint, the first elastic pressing plate and the second elastic pressing plate can both elastically avoid the cable, and have a positioning effect on cables of different diameters. In this process, the friction resistance caused by the first elastic pressing plate and the second elastic pressing plate to the cable can also be reduced, thereby improving the portability during wiring.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a subway corrosion-resistant cable. Background Art

[0002] Subway is a fast, high-capacity, electric-powered rail transit system built in cities. Trains run on fully enclosed lines. Lines in the central city are basically built in underground tunnels, while lines outside the central city are generally built on viaducts or on the ground.

[0003] Cables laid in subway tunnels are connected to different power cabinets, and most of them are partially exposed to the outside of the power cabinets. The cabinets are equipped with sealing joints adapted to the cables to ensure the tightness of the connection between the cables and the cabinets. Cables are also partially exposed in the subway tunnel environment. Due to the damp and dark environment inside the subway, the outer skin of the cables is easily corroded and rotted during long-term operation, which affects the service life of the cables. Utility Model Content

[0004] In view of the above problems, the present application provides a subway corrosion-resistant cable.

[0005] To achieve the above objectives, the present application provides the following technical solutions: a subway corrosion-resistant cable, comprising a protective tube and a cable arranged inside the protective tube, a positioning joint being arranged on the outside of the cable, and an opening of the positioning joint extending along the distribution direction of the cable to form an extension portion.

[0006] A fastening sleeve is arranged on the inner side of the extension part, and the fastening sleeve is a funnel-shaped structure, and a plurality of groups of elastic pressing plates are arranged along a circular track at the narrow end of the fastening sleeve, each group of elastic pressing plates is composed of a first elastic pressing plate and a second elastic pressing plate fixed at the port of the fastening sleeve, and the movable ends of the first elastic pressing plate and the second elastic pressing plate are relatively distributed.

[0007] Furthermore, a plurality of elastic pressing blocks are arranged on the surface of the extension portion along a circular track and are distributed at equal distances, and a channel for accommodating the elastic pressing blocks exposed to the inner side thereof is opened on the surface of the fastening sleeve.

[0008] Furthermore, the open ends of the protective tubes are provided with protective joints, and the outer sides of the protective tubes are arranged with retaining sleeves, the outer surfaces of the protective joints extend outward to form an annular flange, the flange abuts against the open ends of the protective tubes, and the retaining sleeves abut against the flanges.

[0009] Furthermore, a docking cap is arranged on the outer side of the protective tube near the openings at both ends thereof. The docking cap is located on the outer side of the protective joint and the positioning sleeve, and the inner wall of the docking cap abuts against the flange of the outer surface of the protective joint.

[0010] Furthermore, the butt cap and the protective joint are connected via a joint connector, and the extension portion is installed on the inner side of the joint connector.

[0011] Furthermore, the inner wall of the docking cap protrudes to form an annular protrusion, and the annular protrusion abuts against one end of the flange of the locking sleeve away from the outer surface of the protective joint.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] The utility model can protect the exposed part of the cable to the outside of the power cabinet through the protective tube, so as to avoid the rotting of the cable skin and improve the service life of the cable. In the process of cables of different diameters passing through the fastening sleeve, the extension part and the positioning joint, the first elastic pressing piece and the second elastic pressing piece can elastically avoid the cable, and have a positioning effect for cables of different diameters. In this process, the friction resistance caused by the first elastic pressing piece and the second elastic pressing piece to the cable can also be reduced, so as to facilitate the rapid installation and removal of the cable, and improve the portability during the wiring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the butt cap and the joint connector of the utility model after being cut open.

[0017] Figure 3 It is a schematic diagram of the connection structure of the butt cap, the joint connector and the positioning joint of the utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure of the positioning joint, the fastening sleeve and the cable of the utility model.

[0019] In the figure: 1, protective tube; 11, protective joint; 12, locking sleeve; 2, cable; 3, docking cap; 4, joint connector; 5, positioning joint; 51, extension part; 52, elastic pressure block; 6, fastening sleeve; 61, first elastic pressure piece; 62, second elastic pressure piece. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: Reference Figure 1 , Figure 2 The subway anti-corrosion cable shown includes a protective tube 1 and a cable 2 arranged inside the protective tube 1, and a positioning joint 5 is arranged outside the cable 2, and the opening of the positioning joint 5 extends along the distribution direction of the cable 2 to form an extension 51. When the cable 2 is connected to the inside of the power cabinet, the positioning joint 5 can be installed on the through hole of the power cabinet, so the protective tube 1 can be located at the part of the cable 2 exposed to the outside of the power cabinet for protection, effectively reducing the adverse effects of the dark and humid environment underground on the cable 2, avoiding the rotting of the surface of the cable 2, and increasing the service life of the cable 2.

[0022] A fastening sleeve 6 is arranged on the inner side of the extension portion 51. The fastening sleeve 6 is a funnel-shaped structure, and a plurality of groups of elastic pressing plates are arranged along a circular trajectory at the narrow end of the fastening sleeve 6. Each group of elastic pressing plates is composed of a first elastic pressing plate 61 and a second elastic pressing plate 62 fixed at the end of the fastening sleeve 6, and the movable ends of the first elastic pressing plate 61 and the second elastic pressing plate 62 are relatively distributed.

[0023] In the process of cables 2 of different diameters passing through the fastening sleeve 6, the extension portion 51 and the positioning joint 5, since the movable ends of the first elastic pressing piece 61 and the second elastic pressing piece 62 are relatively distributed, the first elastic pressing piece 61 and the second elastic pressing piece 62 can both swing elastically to avoid the cable 2. After the cable 2 passes through smoothly, the two of them abut against the surface of the cable 2 passing through the fastening sleeve 6, which has a positioning effect on cables 2 of different diameters.

[0024] Furthermore, when the first elastic pressing piece 61 and the second elastic pressing piece 62 avoid the cable 2, the friction resistance caused by the first elastic pressing piece 61 and the second elastic pressing piece 62 to the cable 2 can be reduced, so as to facilitate the rapid installation and removal of the cable 2 and improve the portability during the wiring process.

[0025] The surface of the extension part 51 is provided with a plurality of elastic pressing blocks 52 which are equidistantly distributed along a circular track, and the surface of the fastening sleeve 6 is provided with a channel for accommodating the elastic pressing blocks 52 to be exposed to the inside thereof. When the cable 2 passes through the fastening sleeve 6 and the extension part 51, the elastic pressing blocks 52 are also pressed against the surface of the cable 2, thereby improving the positioning effect of the cable and preventing the cable 2 from shaking inside the extension part 51.

[0026] like Figure 3 , Figure 4 As shown, the open ends of the protective tubes 1 are provided with protective joints 11, and the outer sides of the protective tubes 1 are arranged with retaining sleeves 12. The outer surfaces of the protective joints 11 extend outward to form an annular flange, which abuts against the open ends of the protective tubes 1, and the retaining sleeves 12 abut against the flanges. The protective joints 11 and retaining sleeves 12 respectively have protective effects on the open ends of the protective tubes 1 and the outer sides of the open ends, reduce the wear at the ends of the protective tubes 1, and avoid friction damage at the ends of the protective tubes 1 when they are installed on the power cabinet.

[0027] like Figure 3 , Figure 4 As shown, a docking cap 3 is arranged on the outside of the protective tube 1 near the openings at both ends thereof, and the docking cap 3 is located on the outside of the protective joint 11 and the locking sleeve 12, and the inner wall of the docking cap 3 abuts against the flange of the outer surface of the protective joint 11, thereby ensuring a tight connection between the docking cap 3 and the protective joint 11, and dust in the external environment is not easy to enter the inner side of the protective tube 1 through the gap between the docking cap 3 and the protective joint 11.

[0028] like Figure 3 As shown, the butt cap 3 and the protective joint 11 are connected through the joint connector 4, and the extension portion 51 is installed on the inner side of the joint connector 4. The joint connector 4 stably connects the butt cap 3 and the protective joint 11, ensuring the stability of the two in the connected state, and at the same time, provides installation space for the positioning joint 5.

[0029] like Figure 3 As shown, the inner wall of the docking cap 3 protrudes to form an annular protrusion, which abuts against one end of the flange of the locking sleeve 12 away from the outer surface of the protective joint 11, maintaining the tightness of the connection between the docking cap 3 and the locking sleeve 12, and preventing the locking sleeve 12 from deflecting or falling off.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A subway anti-corrosion cable, characterized by: It comprises a protective tube (1) and a cable (2) arranged inside the protective tube (1), a positioning joint (5) being arranged outside the cable (2), and an opening of the positioning joint (5) extending along the distribution direction of the cable (2) to form an extension portion (51); A fastening sleeve (6) is arranged on the inner side of the extension portion (51), the fastening sleeve (6) is a funnel-shaped structure, and a plurality of groups of elastic pressing sheets are arranged along a circular track at the narrow end of the fastening sleeve (6), each group of elastic pressing sheets is composed of a first elastic pressing sheet (61) and a second elastic pressing sheet (62) fixed at the end of the fastening sleeve (6), and the movable ends of the first elastic pressing sheet (61) and the second elastic pressing sheet (62) are relatively distributed.

2. The subway anti-corrosion cable according to claim 1, characterized in that: The surface of the extension portion (51) is provided with a plurality of elastic pressing blocks (52) distributed at equal distances along a circular track, and the surface of the fastening sleeve (6) is provided with a channel for accommodating the elastic pressing blocks (52) exposed to the inside thereof.

3. The subway anti-corrosion cable according to claim 1, characterized in that: The open ends of the protective tubes (1) are each provided with a protective joint (11), and a retaining sleeve (12) is arranged on the outside of the protective tubes (1); the outer surfaces of the protective joints (11) extend outward to form an annular flange, the flange abuts against the open end of the protective tube (1), and the retaining sleeve (12) abuts against the flange.

4. The subway anti-corrosion cable according to claim 3, characterized in that: A butt joint cap (3) is arranged on the outer side of the protective tube (1) near the openings at both ends thereof. The butt joint cap (3) is located on the outer side of the protective joint (11) and the retaining sleeve (12), and the inner wall of the butt joint cap (3) abuts against the flange on the outer surface of the protective joint (11).

5. The subway anti-corrosion cable according to claim 4, characterized in that: The docking cap (3) and the protective joint (11) are connected via a joint connector (4), and the extension portion (51) is installed on the inner side of the joint connector (4).

6. The subway anti-corrosion cable according to claim 4, characterized in that: The inner wall of the docking cap (3) protrudes to form an annular protrusion, and the annular protrusion abuts against one end of the flange of the locking sleeve (12) away from the outer surface of the protective joint (11).

Images