CN220873289U - Heat-resistant elastomer sheath cable - Google Patents

Abstract

The utility model belongs to the field of cables, and provides a heat-resistant elastomer sheath cable which comprises a plurality of cable cores, wherein an inner sheath, a shielding layer and an outer sheath are arranged outside the cable cores, the cable cores are distributed in a mode of 1+6 and are similar to hexagons, a protecting piece is arranged between adjacent cable cores, the inner wall of the inner sheath is hexagonal, the outer wall of the inner sheath is circular, axial through holes which are in one-to-one correspondence with the protecting piece are formed in the inner sheath, a plurality of honeycomb grooves are formed in the outer wall of the shielding layer, water-blocking patches are arranged in the honeycomb grooves, a reflecting sleeve is arranged between the shielding layer and the tensile layer, the tensile layer comprises an extrusion molding sleeve, a plurality of positioning groove belts which are distributed at intervals and are in an axial direction are arranged on the outer wall of the extrusion molding sleeve, a tensile metal plate belt is arranged in the positioning groove belt, wear-resistant strips are arranged on the outer wall of the outer sheath, and the outer surface of the wear-resistant strips is a curved surface. The cable has the advantages of good integrity, reasonable design, simple structure, good internal stability, high tensile capacity, high wear resistance and high practicability, and is suitable for large-scale popularization.

Description

Heat-resistant elastomer sheath cable

Technical Field

The utility model belongs to the field of cables, and particularly relates to a heat-resistant elastomer sheath cable.

Background

The cable comprises a data cable, a power cable, a communication cable and the like, and has wide application fields. The cable generally comprises a plurality of cable cores and an outer wrapping structure, and the outer wrapping structure is different according to the production capacity of different factories and the use environment of the cable, but all the outer wrapping structure needs to meet factory standards.

The prior patent CN20232001971. X discloses a heat-resistant elastomer insulated elastomer sheath cable, which comprises a cable main outer sleeve layer, wherein a cable main body is arranged in the cable main outer sleeve layer in a penetrating way, and a filling and reinforcing structure for reinforcing the supporting stability of the cable main body is arranged in the cable main outer sleeve layer. This heat-resisting elastomer is insulating, elastomer sheath cable, the fire-retardant fireproof effect of whole cable of reinforcing under the fire-retardant layer effect of first fire-retardant layer and second that sets up, the support steadiness between each cable main part of reinforcing under the effect of packing layer in addition, strengthen the pull resistance of the whole cable of core reinforcing through first firm enhancement core and the firm enhancement core of second, reduce to use the damage of causing inside sinle silk because of bending for a long time. However, the wear resistance of the cable is improved by adding the wear-resistant sheath layer outside the main cable jacket layer, but the wear-resistant sheath layer and the main cable jacket layer have the problem of large matching difficulty on one hand, and the situation of large caliber can occur due to matching, so that the situation of loose wear-resistant sheath layer and the main cable jacket layer in actual use affects the practicability of the cable; furthermore, the filling reinforcement structure, especially the second stable reinforcement core, occupies a relatively large area in the cable, affects the connection capacity and the overall weight of the cable, and causes the situation of running inside the cable due to the gravity problem.

Disclosure of utility model

Aiming at the technical problems of the elastomer sheath cable, the utility model provides the heat-resistant elastomer sheath cable which has the advantages of reasonable design, simple structure, better internal stability, higher tensile resistance and wear resistance and stronger practicability.

In order to achieve the above purpose, the technical scheme includes that the heat-resistant elastomer sheath cable provided by the utility model comprises a plurality of cable cores, wherein an inner sheath, a shielding layer and an outer sheath are arranged outside the cable cores, the cable cores are distributed in a 1+6 mode and are similar to a hexagon, a protection piece is arranged between adjacent cable cores, the protection piece is in a T shape and the head of the protection piece faces outwards, the inner wall of the inner sheath is hexagonal, the outer wall of the inner sheath is circular, axial through holes corresponding to the protection piece one by one are formed in the inner sheath, a plurality of honeycomb grooves are formed in the outer wall of the shielding layer, water-blocking patches are arranged in the honeycomb grooves, adjacent water-blocking patches are connected with each other, a reflective sleeve is arranged between the shielding layer and the tensile layer, the tensile layer comprises an extrusion molding sleeve, a plurality of positioning groove belts which are distributed at intervals and are axial are arranged on the outer wall of the extrusion molding sleeve, a tensile metal plate belt is arranged in the positioning groove belt, a plurality of wear-resistant strips which are distributed at intervals are arranged on the outer wall of the outer sheath, and the outer surface of the wear-resistant strips is a curved surface.

Preferably, the two ribs of the protection piece are in surface-to-surface contact with the curved surface of the cable core, and the tail end of the protection piece faces inwards and is provided with a V-shaped compression opening.

Preferably, a first spiral groove extending spirally along the length direction of the inner sheath is formed in the outer wall of the inner sheath, and a spiral elastic wire is arranged in the first spiral groove.

Preferably, the cross section of the tensile metal plate belt is isosceles trapezoid, and two waists of the tensile metal plate belt are in contact fit with the inner wall of the positioning groove belt.

Preferably, the cross section of the wear strip is semi-elliptical and the spacing angle is not greater than 20 degrees.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. According to the heat-resistant elastomer sheath cable provided by the utility model, the protection piece, the inner sheath with the inner hexagon are utilized, the stability of all cable cores is improved, the torsion resistance effect is improved, and the inner sheath has certain buffer performance, so that the internal stability of the cable can be further ensured; the water blocking performance of the cable can be improved by using the water blocking patch; the reflective sleeve can send out a conspicuous optical signal when the cable is damaged to a certain extent outside the cable so as to improve the inspection efficiency; the tensile layer can improve the tensile property of the cable, and the wear-resistant strip can improve the wear resistance of the outer surface of the cable. The cable has the advantages of good integrity, reasonable design, simple structure, good internal stability, high tensile capacity, high wear resistance and high practicability, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a heat resistant elastomer jacketed cable provided in an embodiment;

FIG. 2 is an enlarged schematic view of the structure A of FIG. 1;

FIG. 3 is a top view of the inner sheath;

FIG. 4 is a top view of the shield layer and water blocking patch;

In the drawings, 1, a cable core; 2. a guard; 21. compressing the mouth; 3. an inner sheath; 31. an axial through hole; 32. a helical elastic thread; 4. a shielding layer; 5. a water-blocking patch; 6. a reflective sleeve; 7. a tensile layer; 71. extruding a sleeve; 72. positioning a grooved belt; 73. tensile metal plate strips; 8. an outer sheath; 81. wear resistant strips.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. 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. For convenience of description, the words "upper", "lower", "left" and "right" are merely used herein to denote a correspondence with the upper, lower, left, and right directions of the drawing figures, and are not limiting on the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

As shown in fig. 1 to 4, the heat-resistant elastomer jacketed cable provided by the utility model comprises a plurality of cable cores 1, wherein an inner jacket 3, a shielding layer 4 and an outer jacket 8 are arranged outside the cable cores 1, the cable cores 1 are distributed in a 1+6-like manner, a protective piece 2 is arranged between the adjacent cable cores 1, the protective piece 2 is in a T shape, the head of the protective piece faces outwards, the inner wall of the inner jacket 3 is hexagonal, the outer wall of the inner jacket 3 is circular, axial through holes 31 which are in one-to-one correspondence with the protective piece 2 are arranged inside the inner jacket 3, a plurality of honeycomb grooves are formed in the outer wall of the shielding layer 4, water-blocking patches 5 with drying agents/dry powder are arranged in the honeycomb grooves, the adjacent water-blocking patches 5 are connected with each other, a reflective sleeve 6 is arranged between the shielding layer 4 and the tensile layer 7, the tensile layer 7 comprises an extrusion sleeve 71, a plurality of positioning groove strips 72 which are distributed at intervals and are arranged in the axial direction are arranged on the outer wall of the extrusion sleeve 71, a tensile metal strip 73 is arranged in the positioning groove strip 72, a plurality of wear-resistant strips 81 are distributed at intervals, and the outer surface of the outer wall of the outer jacket 8 is provided with a curved surface.

Specifically, 6 protection pieces 2 and 6 cable cores 1 form a quasi-hexagonal structure, and all cable cores 1 including the protection pieces 2 can be effectively restrained by adopting an inner hexagonal sheath 3, so that the stability of all cable cores 1 is improved, and the torsion resistance effect is improved; meanwhile, the protection piece 2 and the inner sheath 3 have certain buffer performance, so that the internal stability of the cable can be further ensured. The shielding layer 4 provides shielding function, and meanwhile, the drying agent/dry powder in the water-blocking patch 5 attached to the outer side of the shielding layer can absorb moisture in the cable, so that the water-blocking performance of the cable is improved. The reflective sleeve 6 can emit a conspicuous light signal when the cable is damaged to a certain extent outside the cable so as to improve the inspection efficiency. The tensile layer 7 can improve the tensile performance of the cable, and the tensile metal plate strip 73 is restrained by the positioning groove strip 72 to be always kept in a relatively stable position. The wear-resistant strip 81 enlarges the diameter of the outer sheath 8, but reduces the contact area between the wear-resistant strip 81 and external hard objects, such as the curved surface of the wear-resistant strip 81 and the external hard objects are mostly in line-to-surface contact, thus delaying the damage of the outer sheath 8, and the thickness thereof leads the actual wear resistance of the outer surface of the cable to be improved to a certain extent, thus the actual service life of the cable is longer

In order to improve the restraint effect of the protection piece 2 on the cable core 1, the two ribs of the protection piece 2 are in surface-to-surface contact with the curved surface of the cable core 1, the tail end of the protection piece 2 faces inwards and is provided with a V-shaped compression opening 21, the actual caliber of the compression opening 21 can generate corresponding change under the pressure effect of the cable core 1, but the protection piece 2 and the cable core 1 can move towards the balance position under the action of elastic restoring force, so that better restraint effect is realized.

Considering that the extrusion molding surface inner wall of the inner sheath 3 is of a polygonal structure, in order to ensure that the inner sheath 3 has certain flexibility, the outer wall of the inner sheath 3 is provided with a spiral groove extending along the length direction of the spiral groove, and a spiral elastic wire 32 is arranged in the spiral groove. The spiral groove 32 can provide certain expansion capability for the outer wall of the extrusion molding surface of the inner sheath 3, so that the inner sheath 3 has better toughness and flexibility in actual use, and the spiral elastic wire can be used as a rib of the inner sheath 3, so that the tensile property of the inner sheath 3 is improved on the premise of ensuring the flexibility.

In order to improve the stability of the tensile metal plate strip 73, the section of the tensile metal plate strip 73 provided by the invention is isosceles trapezoid, and two waists of the tensile metal plate strip 73 are in contact fit with the inner wall of the positioning groove strip 72. Both sides of the tensile metal plate band 73 are limited by the inner wall of the positioning groove band 72 to be maintained in a predetermined direction, and a part of the radial pressure applied to the tensile metal plate band 73 can be decomposed through the contact surface with the positioning groove band 72 in addition to being capable of resisting a part of the axial tension by itself, so that the tensile capacity of the whole cable is high.

In order to improve the wear resistance of the cable, the cross section of the wear-resistant strip 81 provided by the utility model is semi-elliptical, and the interval angle is not more than 20 degrees, so that the wear-resistant strip 81 is ensured to have larger distribution density, and the semi-elliptical design enables the wear-resistant strip to smoothly transit in the past when encountering external hard objects, so that hard pulling and long-time dry friction cannot be generated.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims (5)

1. The utility model provides a heat-resisting elastomer sheath cable, includes many cable cores, the outside of cable core is provided with inner sheath, shielding layer and oversheath, its characterized in that, the cable core is 1+6 distribution and is the class hexagon, is provided with the guard piece between the adjacent cable core, the guard piece is T font and its head outwards, the inner wall of inner sheath is hexagon and its outer wall is circular, the inside of inner sheath is provided with the axial through-hole with guard piece one-to-one, be provided with a plurality of honeycomb on the outer wall of shielding layer, be provided with the paster that blocks water in the honeycomb, adjacent paster that blocks water interconnect, be provided with the reflector sleeve between shielding layer and the tensile layer, the tensile layer includes the extrusion molding cover, be provided with a plurality of interval distribution and be axial constant head tank area on the outer wall of extrusion molding cover, the outer wall of oversheath is provided with a plurality of interval distribution's wear-resisting strips in the constant head tank area, the surface of wear-resisting strip is the curved surface.

2. The heat resistant elastomer jacketed cable of claim 1 wherein the two ribs of the shield are in surface-to-surface contact with the curved surface of the cable core, and the tail end of the shield is inwardly facing and provided with a V-shaped compression port.

3. A heat resistant elastomer jacketed cable according to claim 2, wherein the outer wall of the inner jacket is provided with a first helical groove extending helically along its length, and wherein a helical elastic wire is provided in the first helical groove.

4. A heat resistant elastomer jacketed cable according to claim 3, wherein said tensile sheet metal band has a cross section of isosceles trapezoid shape and two waists thereof are in contact fit with the inner wall of the positioning groove band.

5. The heat resistant elastomer jacketed cable of claim 4 wherein said wear strips are semi-elliptical in cross section and are spaced apart at an angle of no more than 20 degrees.