CN219497450U

CN219497450U - Flame-retardant insulating tube

Info

Publication number: CN219497450U
Application number: CN202320824404.7U
Authority: CN
Inventors: 张学云; 于士玲; 张逸超
Original assignee: YANGZHOU YONGXIN INSULATION DUST EQUIPMENT PLANT
Current assignee: YANGZHOU YONGXIN INSULATION DUST EQUIPMENT PLANT
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-08-08
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a flame-retardant insulating tube, which comprises: the anti-stretching wire sleeve comprises a sleeve body, a limiting connector and a plurality of anti-stretching wires, wherein the limiting connector is fixedly sleeved at two ends of the sleeve body, a locking ring sleeve positioned at the periphery of the limiting connector is fixedly sleeved at the outer sides of the two ends of the sleeve body, a plurality of cable sleeve holes are formed in the inner side of the limiting connector, a plurality of wire nodes which are uniformly distributed are arranged at the periphery of the limiting connector, the two ends of the anti-stretching wires are fixed on the surfaces of the wire nodes, and a tensile woven net sleeve is embedded in the inner side of the sleeve body. According to the utility model, the limiting connector structures are arranged at the two ends of the sleeve body, and the limiting connectors are used for carrying out cable positioning sleeve connection and end fixing of the sleeve body, so that the sleeve body and an internal cable are integrated, the sleeve body and the cable are prevented from relative movement and stress in the wire pulling action, the cable is prevented from being broken, and the protection effect on the cable is improved.

Description

Flame-retardant insulating tube

Technical Field

The utility model relates to the technical field of cable flame retardance, in particular to a flame-retardant insulating tube.

Background

Insulated wires used in high voltage equipment harnesses may be exposed to adverse conditions such as temperature changes from cold to high temperature, vibration, and wind and rain, and may be exposed to heat or fire or the like generated by the machine. Therefore, such an insulating coating layer (insulating layer) of the insulated wire is required to satisfy predetermined standards concerning mechanical strength, insulation resistance, hot water resistance (stability), flame retardancy, abrasion resistance, heat distortion resistance, and the like, so that the insulated wire can be stably used even under such adverse conditions. The allowable standards are specified by, for example, standards of the international organization for standardization (ISO) and International Electrotechnical Commission (IEC), which is an international standard, and standards of the european specification (EN), which is a european standard.

The existing flame-retardant insulating tube is mainly made of flame-retardant resin composition, has larger difference in terms of flexibility resistance with a cable and an insulating layer on the surface of the cable, and cannot protect the cable due to the fact that the flame-retardant insulating tube cannot follow synchronous bending and pulling actions of the flame-retardant insulating tube in bending and stretching and straightening actions of the cable, relative movement of the flame-retardant insulating tube on the surface of the cable causes that two ends of the cable are exposed and cannot be protected, and the wire pulling action is concentrated in stress and the surface of the cable, so that the flame-retardant insulating tube cannot achieve tensile protection of the cable without being stressed, and has certain defects.

Disclosure of Invention

The present utility model aims to solve one of the technical problems existing in the prior art or related technologies.

The technical scheme adopted by the utility model is as follows: a flame retardant insulating tube comprising: the anti-stretching sleeve comprises a sleeve body, a limiting connector and a plurality of anti-stretching wires, wherein the limiting connector is fixedly sleeved at two ends of the sleeve body, a locking ring sleeve positioned at the periphery of the limiting connector is fixedly sleeved at the outer sides of two ends of the sleeve body, a plurality of cable sleeve holes are formed in the inner side of the limiting connector, a plurality of uniformly distributed wire nodes are arranged at the periphery of the limiting connector, the two ends of the anti-stretching wires are fixed on the surfaces of the wire nodes, and a tensile woven net sleeve is embedded at the inner side of the sleeve body.

The present utility model may be further configured in a preferred example to: the thickness of the sleeve main body is smaller than 0.25mm, and the sleeve main body is a halogen-free insulating resin material member.

The present utility model may be further configured in a preferred example to: the tensile woven mesh sleeve is of a nylon woven mesh structure, two ends of the tensile woven mesh sleeve extend and are sleeved on the surface of the limiting connector, the limiting connector and the sleeve body are in interference fit with the inner side of the locking ring sleeve, and the locking ring sleeve is of a rubber ring structure.

The present utility model may be further configured in a preferred example to: the anti-stretching rib is of a low-carbon steel wire structure, and the length of the anti-stretching rib is smaller than or equal to the maximum extension length of the anti-stretching woven mesh sleeve.

The present utility model may be further configured in a preferred example to: the number of the cable trepanning is a plurality of, the cable trepanning evenly distributed and run through spacing connector and be linked together with the inboard of sleeve pipe main part.

The present utility model may be further configured in a preferred example to: and the two ends of the limiting connector are respectively provided with a joint part symmetrical with respect to the line point, and the locking ring sleeve is sleeved on the periphery of the joint parts.

The beneficial effects obtained by the utility model are as follows:

1. according to the utility model, the limiting connector structures are arranged at the two ends of the sleeve body, and the limiting connectors are used for carrying out cable positioning sleeve connection and end fixing of the sleeve body, so that the sleeve body and an internal cable are integrated, the sleeve body and the cable are prevented from relative movement and stress in the wire pulling action, the cable is prevented from being broken, and the protection effect on the cable is improved.

2. According to the utility model, the flexible sleeve main body structure is arranged, the main stress structure is formed by utilizing the tensile woven mesh sleeve in the sleeve main body, the internal electric wire is wrapped and protected, the tensile woven mesh sleeve and the sleeve main body can be directly bent in the sleeve main body with expanded elasticity when the electric wire is bent, and the sleeve main body and the tensile woven mesh sleeve are deformed and extended in a pulling state, so that the maximum limiting amount is reached in the range of the electric wire allowed to be pulled, the pulling stress is fully concentrated on the surface of the tensile rib, the damage to the electric cable is avoided, and the protection effect is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a cannula body in a straightened state in accordance with one embodiment of the present utility model;

FIG. 3 is a schematic diagram of a connection structure of a tensile woven mesh cover according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a limiting connector according to an embodiment of the utility model.

Reference numerals:

100. a sleeve body; 110. tensile woven mesh cover;

200. a limit connector; 210. a wire node; 220. a locking collar; 201. a cable trepanning;

300. and (5) stretching resistance.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

A flame retardant insulating tube provided in accordance with some embodiments of the present utility model is described below with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present utility model provides a flame retardant insulating tube, comprising: the sleeve body 100, spacing connector 200 and a plurality of anti-lacing wire 300, spacing connector 200 has been cup jointed to the fixed both ends of sleeve body 100, the outside at sleeve body 100 both ends has been fixedly cup jointed and has been located the locking ring cover 220 of spacing connector 200 periphery, the inboard of spacing connector 200 is equipped with a plurality of cable sheathing holes 201, the periphery of spacing connector 200 is equipped with a plurality of evenly distributed's line knot 210, the both ends of anti-lacing wire 300 are fixed in the surface of line knot 210, the inboard of sleeve body 100 has been embedded with tensile and has been woven net cover 110.

In this embodiment, the thickness of the sleeve body 100 is less than 0.25mm, and the sleeve body 100 is a halogen-free insulating resin material member.

Specifically, the thickness of the wall of the insulating coating layer used in the insulated wire is reduced, the flexible bending property of the insulated wire is improved, the material consumption is reduced through the lower thickness, and the cost is reduced.

In this embodiment, the tensile woven mesh cover 110 is a nylon woven mesh structure, two ends of the tensile woven mesh cover 110 are extended and sleeved on the surface of the limit connector 200, the limit connector 200 and the sleeve body 100 are in interference fit and sleeved on the inner side of the locking ring sleeve 220, and the locking ring sleeve 220 is a rubber ring structure.

Specifically, the flexible property of the nylon woven mesh can be utilized to deform along with the deformation of the sleeve main body 100, and the tensile woven mesh sleeve 110 is stressed under the action of pulling the sleeve main body 100 to avoid the sleeve main body 100 from being stressed to break.

In this embodiment, the anti-lacing wire 300 is a low carbon steel wire structure, and the length of the anti-lacing wire 300 is less than or equal to the maximum extension length of the tensile braid 110.

Specifically, the tensile protection is provided to the sleeve body 100 and the internal cable by the total tensile load applied by the anti-tie 300 under tension before the sleeve body 100 reaches the maximum tensile length.

In this embodiment, the number of cable trepanning 201 is several, and the cable trepanning 201 is evenly distributed and communicates with the inside of the sleeve body 100 through the limit connector 200.

Specifically, the cable trepanning 201 may be defined according to the number and diameter of the cables, and the limiting connector 200 is sleeved and fixed on the surface of the cable through the cable trepanning 201, so as to avoid the relative movement between the sleeve main body 100 and the cable.

In this embodiment, two ends of the limiting connector 200 are provided with joint portions symmetrical with respect to the wire node 210, and the locking collar 220 is sleeved on the outer periphery of the joint portions.

Specifically, the two sections of the sleeve main body 100 can be connected through the joint parts at the two ends of the limiting connector 200, so that the function of the connecting joint is realized, and the length of the sleeve main body 100 can be customized according to the length of the cable.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A flame retardant insulating tube, comprising: the anti-tension sleeve comprises a sleeve body (100), a limiting connector (200) and a plurality of anti-tension bars (300), wherein the limiting connector (200) is fixedly sleeved at two ends of the sleeve body (100), a locking ring sleeve (220) positioned at the periphery of the limiting connector (200) is fixedly sleeved at the outer side of the two ends of the sleeve body (100), a plurality of cable sleeve holes (201) are formed in the inner side of the limiting connector (200), a plurality of wire nodes (210) which are uniformly distributed are arranged at the periphery of the limiting connector (200), two ends of each anti-tension bar (300) are fixed on the surfaces of the wire nodes (210), and a tensile woven mesh sleeve (110) is embedded in the inner side of the sleeve body (100).

2. A flame retardant insulating tube according to claim 1, wherein the thickness of the sleeve body (100) is less than 0.25mm, and the sleeve body (100) is a halogen-free insulating resin material member.

3. The flame-retardant insulating tube according to claim 1, wherein the tensile woven mesh (110) is of a nylon woven mesh structure, two ends of the tensile woven mesh (110) are extended and sleeved on the surface of the limiting connector (200), the limiting connector (200) and the sleeve body (100) are in interference fit with the inner side of the locking ring sleeve (220), and the locking ring sleeve (220) is of a rubber ring structure.

4. The flame retardant insulating tube of claim 1, wherein the tensile ribs (300) are of a low carbon steel wire structure, and the length of the tensile ribs (300) is less than or equal to the maximum extension length of the tensile woven mesh (110).

5. A flame retardant insulating tube according to claim 1, characterized in that the number of said cable jacket holes (201) is several, said cable jacket holes (201) being evenly distributed and communicating with the inside of the bushing body (100) through the limit connector (200).

6. The flame retardant insulating tube as claimed in claim 1, wherein both ends of the limit connector (200) are provided with joint portions symmetrical with respect to the wire joint (210), and the locking collar (220) is sleeved on the outer periphery of the joint portions.