CN213519294U

CN213519294U - Photoelectric composite flexible cable for coal mining machine

Info

Publication number: CN213519294U
Application number: CN202021533627.0U
Authority: CN
Inventors: 阳文锋; 罗杰华; 刘慧华; 龙俊; 刘慧�
Original assignee: Gold Cup Electric Co ltd
Current assignee: Gold Cup Electric Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-06-22
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a photoelectric composite coal mining machine flexible cable. The flexible cable comprises a control wire core and a plurality of power wire cores; viewed on a cross section perpendicular to the longitudinal direction, a first wrapping layer and a sheath layer arranged outside the first wrapping layer are arranged outside the control wire core cabling; the control wire core and the power wire core are combined together through a second wrapping layer, and an outer sheath layer is arranged on the second wrapping layer; each control wire core comprises a plurality of control wire core conductors positioned at the inner side and a control wire core insulating layer extruded outside the conductors; and the center of the control wire core conductor of at least one control wire core is provided with a longitudinally extending optical fiber sleeve. The utility model discloses cause the problem that fiber optic sleeve warp and high temperature damaged optic fibre when having avoided the production cable.

Description

Photoelectric composite flexible cable for coal mining machine

Technical Field

The utility model relates to a photoelectric composite coal-winning machine flexible cable belongs to cable technical field.

Background

The underground mine usually uses optical cables and electric cables to be manufactured respectively and laid in an electric power system respectively, the working environment of the coal mining machine is wet throughout the year, the working area is narrow, numerous mechanical constructions are provided, numerous cables are difficult to lay and arrange, the risk of mechanical damage exists, the maintenance difficulty is increased, and potential safety hazards exist. The photoelectric composite coal mining machine flexible cable can integrate a power transmission copper conductor and an optical fiber together, and can synchronously solve the problems of power supply and signal access of equipment at one time. Fig. 1 is a structural schematic diagram of a conventional optical fiber sleeve added to a flexible cable structure of a coal mining machine, however, the inventor finds the following problems in the cable during trial:

1. when the cable is formed, the optical fiber sleeve is filled in the gap between the power wire core and the power wire core of the cable or the gap between the power wire core and the control wire core unit, and the rubber jacketed flexible cable is extruded in an extrusion mode, so that the optical fiber sleeve is extruded and deformed when the outer sheath is extruded, and the optical fiber is possibly damaged.

2. When the outer sheath is extruded, the high-temperature plasticized rubber material is in direct contact with the optical fiber sleeve, the temperature is above 85 ℃, and the outer sheath needs to pass through a high-temperature vulcanizing pipeline, so that the sheath of the optical fiber sleeve is melted, and the optical fiber is easy to damage.

SUMMERY OF THE UTILITY MODEL

In order to guarantee the integrality of the photoelectric composite flexible cable, the utility model aims to provide a photoelectric composite flexible cable, the sheath sizing material of high temperature plastify when this flexible cable can solve the crowded package of oversheath extrudes on the fiber sleeve surface through extrusion formula extrusion tooling, causes the problem that fiber sleeve warp and high temperature damage optic fibre.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

a photoelectric composite flexible cable for a coal mining machine comprises a control wire core extending longitudinally and a plurality of power wire cores extending longitudinally; viewed on a cross section perpendicular to the longitudinal direction, a first wrapping layer and a sheath layer arranged outside the first wrapping layer are arranged outside the control wire core cabling; the control wire core and the power wire core are combined together through a second wrapping layer extending longitudinally, and an outer sheath layer is arranged on the second wrapping layer;

each control wire core comprises a plurality of control wire core conductors positioned at the inner side and a control wire core insulating layer extruded outside the conductors; the structure is characterized in that:

and the center of the control wire core conductor of at least one control wire core is provided with a longitudinally extending optical fiber sleeve.

Therefore, the utility model discloses be equipped with longitudinal extension's fiber sleeve with the control sinle silk conductor center of an at least control sinle silk, can prevent like this that optic fibre from being damaged, simultaneously because control sinle silk conductor's existence for make fiber sleeve's sheath and oversheath crowded package sizing material keep apart.

According to the utility model discloses an embodiment, can also be right the utility model discloses do further optimization, following for optimizing the technical scheme who forms afterwards:

to further prevent the optical fibers from being damaged, a plurality of control wire core conductors are stranded on the outer wall surface of the optical fiber sleeve.

In one preferred embodiment, each power wire core comprises a plurality of power wire core conductors positioned at the inner side, a power wire core insulating layer extruded outside the power wire core conductors, and a power wire core insulating shielding layer arranged outside the power wire core insulating layer; the multi-strand power wire core is twisted together and extends longitudinally integrally.

Preferably, the control wire core insulating layer adopts a semi-conductive tape wrapping structure, or adopts a semi-conductive tape wrapping matched metal and fiber braided layer structure.

Preferably, ground wire cores are arranged on the innermost layer of the cable, and the longitudinally extending control wire cores and the control wire cores are combined together through a second wrapping layer after being cabled.

In one preferred embodiment, the number of the power wire cores is 1, and the number of the control wire cores is at least 3.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses with the transposition of control core conductor on fiber optic sleeve's top layer, prevented effectively that optic fibre from being damaged, can make fiber optic sleeve's sheath and oversheath crowded package sizing material keep apart.

Furthermore, the utility model discloses a control core conductor crowded package one deck insulating layer consequently can play double-deck protection fiber optic sleeve effect, causes fiber optic sleeve's serious deformation when preventing that the extrusion formula of cable sheath from extruding.

Furthermore, the utility model discloses a crowded package one deck restrictive coating behind the control sinle silk stranding, consequently can play the effect of three-layer protection fiber optic sleeve, cause fiber optic sleeve's serious deformation when preventing that the extrusion formula of cable oversheath from extruding.

Drawings

Fig. 1 is a schematic cross-sectional view of a conventional flexible cable for a shearer loader;

fig. 2 is a schematic cross-sectional view of an embodiment of the present invention.

In the figure

The cable comprises 1-a power wire core conductor, 2-a power wire core insulating layer, 3-a power wire core shielding layer, 4-a ground wire core, 5-an optical fiber sleeve, 6-a control wire core conductor, 7-a control wire core insulating layer, 8-a first wrapping layer, 9-a sheath layer, 10-a second wrapping layer and 11-an outer sheath layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

A photoelectric composite flexible cable for a coal mining machine is arranged in a longitudinally extending mode and particularly suitable for being used in the field of coal mining machines, and comprises 3 power wire cores and 1 control wire core which extend longitudinally and 1 ground wire core 4 as shown in figure 2. The ground wire core 4 is filled in the area enclosed between the three power wire cores and the 1 control wire core when viewed from the cross section perpendicular to the longitudinal direction. In other words, 1 ground wire core 4 is arranged at the innermost layer of the cable, 3 power wire cores and 1 control wire core are arranged at the outer layer of the ground wire core 4, and the control wire cores are stranded and extruded on the sheath and then stranded with the power wire cores in a cable.

After the control wire cores are cabled and extruded with the sheath layer, the control wire cores and the power wire cores are combined together through a second wrapping layer 10 extending longitudinally, and then an outer sheath layer 11 is extruded outside the second wrapping layer 10.

As shown in fig. 2, each control wire core comprises a plurality of control wire core conductors 6 positioned at the inner side, a control wire core insulating layer 7 extruded outside the plurality of control wire core conductors 6, a first wrapping layer 8 wrapped on the control wire core cabling cable core, and a control wire core sheath layer 9 extruded outside the first wrapping layer 8. The multiple strands of control wire core conductors 6 are twisted together and extend longitudinally in their entirety.

Every power sinle silk is including being located inboard stranded power sinle silk conductor 1 and crowded package power sinle silk insulating layer 2 outside power sinle silk conductor 1 to and wrap around or wrap around the package + weave power sinle silk insulation shield 3 outside power sinle silk insulating layer 2. The multiple strands of power core conductors 1 are twisted together and extend longitudinally as a whole.

The core point of this embodiment is that at least one control core conductor 6 is provided with a longitudinally extending optical fiber sleeve 5 in the center, in this embodiment 1, and the control core conductor 6 is twisted on the outer surface layer of the optical fiber sleeve 5.

The optical fiber casing 5 is arranged at the center of a control wire core in the existing photoelectric composite coal mining machine flexible cable, namely, a control wire core conductor 6 is stranded on the outer surface of the optical fiber casing 5, and then a control wire core insulating layer 7 is extruded.

The ground core conductor 1 and the power core conductor 6 used in the cable of the embodiment both meet the requirements of the 5 th soft copper conductor.

The ground core conductor 1 of this embodiment overlaps after the transposition and wraps the polyester band, carries out the extrusion of insulating layer 2 again.

The power wire core insulating layer 6 of the embodiment is made of ethylene propylene rubber mixture.

The power core insulation shielding layer 3 of this embodiment adopts semi-conductive tape to wrap or semi-conductive tape is wrapped + metal and fiber braid layer structure.

The first band around covering 8 of the control sinle silk stranding of this embodiment and the second of stranding adopt the non-woven fabrics around the band of covering 10.

The outer sheath layer 11 of this embodiment is made of polyvinyl chloride mixture or other rubber mixture.

If necessary, a longitudinally extending tensile member, such as a thin steel wire or nylon cord, may be laid between the 3 power wire cores.

The above-mentioned embodiments are illustrative and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and all modifications of the equivalent forms of the present invention which are obvious to those skilled in the art after reading the present invention.

Claims

1. A photoelectric composite flexible cable for a coal mining machine comprises a control wire core extending longitudinally and a plurality of power wire cores extending longitudinally; viewed on a cross section perpendicular to the longitudinal direction, a first wrapping layer (8) and a sheath layer (9) arranged outside the first wrapping layer (8) are arranged outside the control wire core cabling; the control wire core and the power wire core are combined together through a second wrapping layer (10) extending longitudinally, and an outer sheath layer (11) is arranged on the second wrapping layer (10);

each control wire core comprises a plurality of control wire core conductors (6) positioned at the inner side and a control wire core insulating layer (7) extruded outside the conductors; the method is characterized in that:

the center of the control wire core conductor (6) of at least one control wire core is provided with a longitudinally extending optical fiber sleeve (5).

2. The photoelectric composite shearer flexible cable according to claim 1, wherein the plurality of control wire core conductors (6) are stranded on the outer wall surface of the optical fiber sleeve (5).

3. The photoelectric composite shearer flexible cable according to claim 1, wherein each power wire core comprises a plurality of power wire core conductors (1) positioned at the inner side, a power wire core insulating layer (2) extruded outside the power wire core conductors (1), and a power wire core insulating shielding layer (3) arranged outside the power wire core insulating layer (2);

the multi-strand power wire core is twisted together and extends longitudinally integrally.

4. The photoelectric composite shearer flexible cable according to any one of claims 1 to 3, wherein the control wire core insulating layer (7) is of a semi-conductive tape wrapping structure or a semi-conductive tape wrapping fit metal and fiber braided layer structure.

5. The photoelectric composite shearer flexible cable according to any one of claims 1 to 3, wherein ground wire cores (4) are arranged on the innermost layer of the cable, and the longitudinally extending control wire cores and the control wire cores are combined together through a second wrapping layer (10) after being cabled.

6. The photoelectric composite shearer flexible cable according to any one of claims 1 to 3, wherein the number of the power wire cores is 1, and the number of the control wire cores is at least 3.