Rubber insulation super-flexible special power cable

Abstract

The utility model discloses a rubber insulation super-flexible special power cable, which comprises a cable body and a protection assembly, the cable body sequentially comprises a conductor, an isolation layer, an insulation layer, a belting layer, an outer sheath and a wear-resistant layer from inside to outside, the outer surface of the wear-resistant layer is provided with a plurality of hemispherical wear-resistant protrusions, and the protection assembly comprises a wear-resistant sleeve and a plurality of fixing rings. According to the power cable, the wear-resistant layer is arranged on the outer side of the outer sheath, and the wear-resistant protrusions are arranged on the surface of the wear-resistant layer, so that the wear-resistant performance of the cable is improved, and the power cable is suitable for places which are small in laying space and need to be moved frequently in the using process. And a protection assembly can be sleeved at the contact part of the cable and a hard object, so that the durability of the cable in a complex environment is ensured, and the protection assembly is convenient to disassemble and assemble and firm to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cable field more specifically, relate to a rubber insulation super flexibility special power cable. BACKGROUND

[0002] As an important medium for power transmission and distribution, power cables play a crucial role in modern society. They are widely used in urban construction, industrial production, agriculture and energy, transportation, and emerging technology fields, providing stable and reliable power support for the development of modern society.

[0003] The existing power cable has poor wear resistance. In some special use scenarios, such as small laying space and frequent movement, the outer sheath is easily worn during frequent movement, exposing the insulation layer and increasing the risk of electrical failure. Some power cables have a wear-resistant layer on the outside of the outer sheath, but in some harsh installation environments, such as corners and metal boxes, the cable often rubs against metal protrusions inside the corner or metal box, and the wear-resistant layer alone is not enough. And the softness of the existing power cable is often insufficient, which will cause the cable to be subjected to excessive stress during movement or bending, thereby increasing the risk of cable damage. SUMMARY

[0004] The utility model aims at overcoming the defects of prior art, provides a rubber insulation super flexibility special power cable.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a special power cable, comprising a cable body and a protection assembly, the cable body comprises a conductor, an isolation layer, an insulation layer, a tape layer, an outer sheath and a wear-resistant layer from inside to outside, the insulation layer is made of ethylene propylene rubber or nitrile rubber material, the outer sheath is made of chlorinated polyethylene rubber material or polyethylene material, the outer surface of the wear-resistant layer is provided with a plurality of semispherical wear-resistant protrusions, the protection assembly comprises a wear-resistant sleeve and a plurality of fixing rings, the wear-resistant sleeve wraps the cable body, the wear-resistant sleeve has an opening, the inner surface of the wear-resistant sleeve has a plurality of semispherical limit pits corresponding to the wear-resistant protrusions, the outer surface of the wear-resistant sleeve has a plurality of fixing grooves for installing the fixing ring, the fixing ring has a notch, the two sides of the notch are provided with convex edges, and the two convex edges are fixedly connected by a fixing nail, the wear-resistant sleeve, the fixing ring, the convex edge and the fixing nail are made of rubber material.

[0006] Further, the plurality of wear-resistant protrusions are divided into multiple groups, the multiple groups of wear-resistant protrusions are distributed at equal intervals along the length direction of the cable body, and the multiple wear-resistant protrusions of the same group are distributed at equal intervals in a ring shape.

[0007] Thus, after the wear-resistant protrusions are inserted into the corresponding limiting pits, the wear-resistant sleeve can be limited.

[0008] Further, the fixing nail comprises a rod part and a head part, the rod part is fixed on one of the convex edges, the other convex edge has a through hole matched with the rod part, and the diameter of the head part of the fixing nail is larger than that of the through hole.

[0009] Since the fixing nail and the convex edge are made of rubber material, they have certain deformation capacity, the head part of the fixing nail can pass through the through hole under the action of external force, thereby fixing and connecting the two convex edges, and as long as the cable is not subjected to large external force, the fixing nail will not be separated from the through hole.

[0010] Further, the isolation layer adopts a mica tape.

[0011] Thus, the fireproof performance of the cable is improved.

[0012] Further, the wrapping layer adopts a glass fiber tape or a ceramic fiber tape.

[0013] Thus, the flame-retardant performance of the cable is improved.

[0014] Further, the wear-resistant sleeve is provided with two fixing rings, and the two fixing rings are respectively arranged at two ends of the wear-resistant sleeve.

[0015] Thus, the wear-resistant sleeve can be well fixed on the cable body.

[0016] Compared with the prior art, the power cable has the beneficial effects that:

[0017] 1. The power cable has a wear-resistant layer arranged on the outer side of the outer sheath, and wear-resistant protrusions arranged on the surface of the wear-resistant layer, thereby improving the wear-resistant performance of the cable, and being suitable for a place with small laying space and frequently moved in use.

[0018] 2. The power cable can be sleeved with the protection assembly at the contact with the hard object, thereby ensuring the durability of the cable in the complex environment, and the protection assembly is convenient to disassemble and assemble and is firmly installed.

[0019] 3. The power cable has the insulation layer, the outer sheath and the protection assembly made of materials with good softness, thereby the cable can easily cope with the use scene with small laying space and frequent movement. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the power cable;

[0021] Figure 2 is an enlarged view of the A area;

[0022] Figure 3This is a cross-sectional view of a power cable.

[0023] Figure 4 A schematic diagram showing the separation of components for protection.

[0024] Explanation of reference numerals in the attached drawings: Conductor 1; Insulating layer 2; Insulating layer 3; Wrapping tape layer 4; Outer sheath 5; Wear-resistant layer 6; Wear-resistant protrusion 6.1; Wear-resistant sleeve 7; Opening 7.1; Limiting pit 7.2; Fixing groove 7.3; Fixing ring 8; Protruding edge 8.1; Fixing nail 9. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-4 The diagram shows a rubber-insulated ultra-flexible special power cable, comprising a cable body and a protective assembly. The cable body, from the inside out, includes a conductor 1, an insulating layer 2, an insulating layer 3, a wrapping layer 4, an outer sheath 5, and a wear-resistant layer 6. The insulating layer 3 is made of EPDM rubber or nitrile rubber. The outer sheath 5 is made of chlorinated polyethylene rubber or polyethylene. The outer surface of the wear-resistant layer 6 has multiple hemispherical wear-resistant protrusions 6.1. The protective assembly includes a wear-resistant sleeve 7 and multiple retaining rings 8. The wear-resistant sleeve 7 encloses the cable body. The wear-resistant sleeve 7 has an opening 7.1. The inner surface of the wear-resistant sleeve 7 has multiple hemispherical limiting pits 7.2 corresponding to the wear-resistant protrusions 6.1. The outer surface of the wear-resistant sleeve 7 has multiple fixing grooves 7.3 for installing fixing rings 8. The fixing ring 8 has a notch. Both sides of the notch have protruding edges 8.1. The two protruding edges 8.1 are fixedly connected by fixing nails 9. The wear-resistant sleeve 7, fixing ring 8, protruding edges 8.1, and fixing nails 9 are all made of rubber.

[0027] Multiple wear-resistant protrusions are divided into multiple groups, and these groups are evenly spaced along the length of the cable body. Multiple wear-resistant protrusions 6.1 within the same group are arranged in a ring with equal spacing. The fixing pin 9 includes a rod and a head. The rod is fixed to one of the protruding edges, and the other protruding edge has a through hole matching the rod. The diameter of the fixing pin's head is larger than the diameter of the through hole. The insulating layer 2 is made of mica tape. The wrapping layer 4 is made of fiberglass tape or ceramic fiber tape. The wear-resistant sleeve 7 is equipped with two fixing rings 8, which are respectively installed at both ends of the wear-resistant sleeve 7.

[0028] Working principle: the rubber insulation super flexible special power cable of the application is provided with a wear-resistant layer outside the outer sheath, and is provided with wear-resistant protrusions on the surface of the wear-resistant layer, thereby increasing the wear resistance of the cable. It is suitable for places with small laying space and frequent movement during use.

[0029] In addition, in order to adapt to some more severe installation places, such as corners, metal boxes, etc., the cable is often rubbed with the corner, or often rubbed with various metal protrusions in the metal box, and only the wear-resistant layer is not enough to cope with it, but the corner and the metal protrusion are few, if the wear-resistant layer of the whole cable is increased for the few contact points, the cost will be increased. The protection assembly is provided, which can be sleeved on the place where the cable often contacts with hard objects, and the wear problem of the cable is solved at low cost, thereby prolonging the service life of the cable.

[0030] When installing the protection assembly, first, the wear-resistant sleeve is pulled apart from the opening and sleeved on the outside of the cable body, and the wear-resistant protrusions are inserted into the corresponding limiting pits, so that the wear-resistant sleeve is prevented from sliding and leaving the current position during the movement of the cable, then the fixing ring is pulled apart from the notch and placed in the fixing groove, and finally an external force is applied to pass the head of the fixing nail through the through hole on the convex edge, so that the two convex edges of the fixing ring are connected by the fixing nail, thereby stably installing the wear-resistant sleeve.

[0031] Although the utility model is described and illustrated with reference to the preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the utility model as long as they do not exceed the scope defined by the claims of the utility model.

Claims

1. A rubber insulated super flexible special power cable, characterized in that, The cable body comprises a conductor, an isolation layer, an insulation layer, a wrapping layer, an outer sheath and a wear-resistant layer from inside to outside, the insulation layer is made of ethylene propylene diene rubber or nitrile rubber, the outer sheath is made of chlorinated polyethylene rubber or polyethylene, the outer surface of the wear-resistant layer is provided with a plurality of semispherical wear-resistant protrusions, the protection assembly comprises a wear-resistant sleeve and a plurality of fixing rings, the wear-resistant sleeve wraps the cable body, the wear-resistant sleeve has an opening, the inner surface of the wear-resistant sleeve has a plurality of semispherical limiting pits corresponding to the wear-resistant protrusions, the outer surface of the wear-resistant sleeve has a plurality of fixing grooves for mounting the fixing rings, the fixing ring has a notch, the two sides of the notch are provided with convex edges, and the two convex edges are fixedly connected through a fixing nail, and the wear-resistant sleeve, the fixing ring, the convex edge and the fixing nail are all made of rubber.

2. The rubber insulated super flexible special electrical power cable according to claim 1, characterized in that, The plurality of wear-resistant protrusions are divided into a plurality of groups, the wear-resistant protrusions in the plurality of groups are distributed at equal intervals along the length direction of the cable body, and the wear-resistant protrusions in the same group are distributed at equal intervals in a ring shape.

3. The rubber insulated super flexible special electrical power cable according to claim 1, characterized in that, The fixing nail comprises a rod part and a head part, the rod part is fixed on one of the convex edges, the other convex edge is provided with a through hole matched with the rod part, and the diameter of the head part of the fixing nail is greater than that of the through hole.

4. The rubber insulated super flexible special electrical power cable according to claim 1, characterized in that, The isolation layer is made of mica tape.

5. The rubber insulated super flexible special electrical power cable according to claim 1, characterized in that, The wrapping layer is made of glass fiber tape or ceramic fiber tape.

6. The rubber insulated super flexible special electrical power cable according to claim 1, characterized in that, The wear-resistant sleeve is provided with two fixing rings, and the two fixing rings are mounted at two ends of the wear-resistant sleeve respectively.

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