CN113488235B

CN113488235B - High-performance, wear-resistant and anti-extrusion shielding monitoring rubber jacketed flexible cable for coal mining machine

Info

Publication number: CN113488235B
Application number: CN202110629508.8A
Authority: CN
Inventors: 李万松; 丁运生
Original assignee: Hefei University of Technology; Anhui Lingyu Cable Technology Co Ltd
Current assignee: Hefei University of Technology; Anhui Lingyu Cable Technology Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2023-03-28
Anticipated expiration: 2041-06-07
Also published as: CN113488235A

Abstract

The invention relates to the technical field of high-performance, wear-resistant and extrusion-resistant coal mining machine shielding monitoring cabtyre flexible cables, and discloses a high-performance, wear-resistant and extrusion-resistant coal mining machine shielding monitoring cabtyre flexible cable which comprises a sheath and a filling protective layer positioned in the sheath, wherein a convex tooth assembly is arranged between the sheath and the filling protective layer, the convex tooth assembly comprises a first triangular strip and a second triangular strip, when the cable is extruded, the sheath transmits extrusion force to the first triangular strip to enable a plurality of first triangular strips to move towards the center, the vertexes of the two second triangular strips are positioned on two inclined surfaces of the first triangular strip, when the first triangular strip transmits force to the second triangular strip, the second triangular strip receives oblique force, the oblique force is decomposed into centripetal extrusion force and tangential force, the extrusion force transmitted to the filling centripetal is smaller than the extrusion force received by the sheath, and accordingly monitoring wire cores, control wires and power wires in the filling layer are protected.

Description

High-performance, wear-resistant and anti-extrusion shielding monitoring rubber jacketed flexible cable for coal mining machine

Technical Field

The invention relates to the technical field of high-performance, wear-resistant and anti-extrusion shearer shielding monitoring rubber jacketed flexible cables, in particular to a high-performance, wear-resistant and anti-extrusion shearer shielding monitoring rubber jacketed flexible cable.

Background

The cable is made up of one or more mutually insulated conductors and an outer insulating layer, the conductors for transmitting electric power or information from one place to another are composed of single-strand or multi-strand conductors and insulating layers for connecting electric circuits, electric appliances, etc., and the MCPJ cable is suitable for power connection of coal mining machines and similar equipment with rated voltage Uo/U of 19/3.3KV and below.

According to patent No. 201811018429.8, a shielding and monitoring braided reinforced rubber jacketed flexible cable for a coal mining machine is disclosed, which comprises an outer sheath, an inner sheath is arranged inside the outer sheath, an outer insulating layer is arranged on the inner wall of the outer sheath, a fiber braided layer is arranged between the inner sheath and the outer insulating layer, a main line core metal/fiber shielding layer is arranged at the middle position inside the inner sheath, a compression resistant layer is arranged between the inner sheath and the main line core metal/fiber shielding layer, a communication line core insulating layer is arranged at the middle position inside the main line core metal/fiber shielding layer, a communication line core conductor is arranged at the middle position inside the communication line core insulating layer, after three main line core conductors are insulated, a wrapping tape and a control core conductor are insulated, are arranged inside the main line core metal/fiber shielding layer in an annular array by taking the communication line core insulating layer as the center, and a communication wire core shielding layer is arranged between the communication wire core conductor and the communication wire core insulating layer, three main wire core insulating layers are all arranged in the wrapping band after being insulated, a main wire core conductor is arranged in the middle position in the three main wire core insulating layers, a flame-retardant filling rope is arranged in the middle position in the wrapping band after being insulated by the control wire core, six control wire core insulating layers are arranged in the wrapping band after being insulated by the control wire core in an annular array by taking the flame-retardant filling rope as the center, control wire core conductors are arranged in the middle position in the six control wire core insulating layers, 5 types of tin-plated copper conductors are adopted for the power wire core and the auxiliary wire core, the nominal insulating thickness is 0.7mm, the control wire core adopts color separation by a color belt, and the average thickness of the outer sheath is not less than 4mm, the inner sheath has the average thickness of not less than 2.4mm, the tensile strength of the cable is not less than 6.5MPa, the tensile strength is more than or equal to 5N/mm, an insulating shielding layer which is woven by adopting a tape covering layer and metal/fibers is arranged in the cable, the fibers are divided into three colors and are convenient to distinguish, the metal shielding layer is used as a ground wire, after the conducting insulation is stripped, conducting powder is not adhered to the core wire sheath, the problem of adhesion between split-phase conducting rubber of the cable and core wire insulation of the cable is solved, meanwhile, the tensile strength and the tensile strength of the cable are improved, the cable is suitable for a coal mine underground comprehensive mining working face where coal and gas protrude out of a mine at the environmental temperature of-40-40 ℃, a pressure-resistant layer is arranged on the inner wall of the inner sheath, when the cable is wound on a cable shaft, the pressure-resistant layer can effectively protect the cable through the elastic performance of a compression spring and a sponge layer inside the cable, a certain buffering force is generated inside the cable, the core wire sheath and the shielding layer are prevented from being damaged and broken in the winding process, the normal use of the cable is ensured, and the service life of the cable is prolonged.

The defects of the prior art are that when the shielding monitoring rubber jacketed flexible cable of the coal mining machine is used, the anti-extrusion capacity is small, the internal core wire cannot be well protected, after the shielding monitoring rubber jacketed flexible cable is used for a long time, part of the cable subjected to extrusion can be flattened, the internal core wire is damaged and broken, a circuit is broken, the production efficiency is seriously influenced, and meanwhile, the life health safety of constructors can be threatened.

Disclosure of Invention

The invention aims to provide a high-performance wear-resistant extrusion-resistant shielding monitoring rubber jacketed flexible cable for a coal mining machine, which can reduce extrusion force applied to an internal core wire.

Technical scheme

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme: the utility model provides a high performance, wear-resisting, anti extrusion coal-winning machine shielding is kept watch on rubber jacketed flexible cable, includes the sheath and is located fill the inoxidizing coating in the sheath, the sheath with be provided with the dogtooth subassembly between the filling inoxidizing coating, the dogtooth subassembly is assembled and is used for decomposing into tangential direction's power with partial extrusion force, reduces fill the pressure that the inoxidizing coating received, avoid set up in fill intraformational power line of inoxidizing coating and control line receive the extrusion.

Preferably, a monitoring wire core is arranged at the middle shaft in the filling protective layer, a plurality of control wires and a plurality of power wires are arranged, and the monitoring wire cores are used as centers and are annularly arrayed in the filling protective layer.

Preferably, the convex tooth assembly comprises a first triangular strip and a second triangular strip, the outer wall of the filling protective layer is fixedly provided with a plurality of second triangular strips, the inner wall of the sheath is fixedly provided with a plurality of first triangular strips, and the top point of each second triangular strip is located on one inclined plane of each first triangular strip.

Preferably, the control line comprises a control line core conductor and a control line core insulating sleeve, and the outer wall of the control line core conductor is sleeved with the control line core insulating sleeve.

Preferably, the outer wall of the control wire core insulating sleeve is sleeved with a ground wire core conductor, the outer wall of the ground wire core conductor is sleeved with a semi-conducting layer, and the semi-conducting layer is sleeved in the filling protective layer.

Preferably, the power line comprises a power line core conductor, a power line core insulating sleeve and a semi-conductive shielding layer, the semi-conductive shielding layer is sleeved in the filling protective layer, the power line core insulating sleeve is sleeved in the semi-conductive shielding layer, and the power line core conductor is sleeved in the power line core insulating sleeve.

Compared with the prior art, the shielding monitoring rubber jacketed flexible cable of the high-performance, wear-resistant and extrusion-resistant coal mining machine provided by the embodiment of the invention has the following beneficial effects:

according to the cable, the extrusion force applied to the inner core wire can be reduced, when the cable is extruded, the sheath transmits the extrusion force to the first triangular strips, the first triangular strips move towards the center, the top points of the two second triangular strips are positioned on the two inclined surfaces of the first triangular strips, when the first triangular strips transmit the force to the second triangular strips, the second triangular strips are applied with oblique force, the oblique force is decomposed into centripetal extrusion force and tangential force through the force decomposition, the centripetal extrusion force transmitted to the filling protection layer is smaller than the extrusion force applied to the sheath, and therefore the monitoring core wire, the control wire and the power wire in the filling protection layer are protected.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic view of the overall front structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the sheath of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of a control line structure according to the present invention;

FIG. 5 is a schematic view of the power line structure of the present invention.

In the figure: 1. a sheath; 2. monitoring the wire core; 3. a control line; 4. a power line; 5. a lobe assembly; 6. filling a protective layer; 7. a first triangular bar; 8. a second triangular bar; 31. a control wire core conductor; 32. a control wire core insulating sleeve; 33. a ground core conductor; 34. a semiconducting layer; 41. a power core conductor; 42. a power wire core insulating sleeve; 43. a semiconductive shield layer.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure will be more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The first embodiment is as follows:

as shown in fig. 1 to 3, a monitoring wire core 2 is arranged at a middle shaft in the filling protective layer 6, a plurality of control wires 3 and power wires 4 are arranged in the filling protective layer 6 in an annular array with the monitoring wire core 2 as a center, and the control wires 3 and the power wires 4 are distributed in the filling protective layer 6 in a staggered manner.

As shown in fig. 3 to 5, the control core conductor 31 is protected by the control core insulating sheath 32, and the loss is reduced and partial discharge is prevented by the semi-conductive layer 34 and the ground core conductor 33 of the grounding system, and at the same time, the power core conductor 41 is protected by the power core insulating sheath 42, and the semi-conductive shielding layer 43 can reduce the loss and prevent partial discharge, and the abrasion resistance of the cable is improved by the sheath 1, and the service life of the cable is prolonged.

Example two:

further, as shown in fig. 3, when the cable is extruded, the sheath 1 transmits the extrusion force to the convex tooth assembly 5, and the convex tooth assembly 5 includes 7 and the second triangular bars 8, when the extrusion force is transmitted to the first triangular bars 7, the plurality of first triangular bars 7 move towards the center, at this time, the vertexes of the two second triangular bars 8 are on the two inclined planes of the first triangular bars 7, when the first triangular bars 7 transmit the force to the second triangular bars 8, the second triangular bars 8 receive the oblique force, through the decomposition of the force, the oblique force is decomposed into the centripetal extrusion force and the tangential force, the centripetal extrusion force transmitted to the filling protection layer 6 is smaller than the extrusion force received by the sheath 1, thereby protecting the monitoring cores 2, the control wires 3 and the power wires 4 in the filling protection layer 6.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A high performance, wear-resisting, anti extrusion coal-winning machine shielding monitoring rubber jacketed flexible cable, includes sheath (1) and is located filling inoxidizing coating (6) in sheath (1), its characterized in that: sheath (1) with it decomposes into tangential direction's power to fill between inoxidizing coating (6) to be provided with dogtooth subassembly (5), dogtooth subassembly (5) are assembled and are used for decomposing partial extrusion force, reduce fill the pressure that inoxidizing coating (6) received, avoid set up in power line (4) and control line (3) in filling inoxidizing coating (6) receive the extrusion, dogtooth subassembly (5) include first triangle strip (7) and second triangle strip (8), fixed mounting has the second triangle strip (8) of a plurality of quantity on the outer wall of filling inoxidizing coating (6), fixed mounting has the first triangle strip (7) of a plurality of quantity on the inner wall of sheath (1), and two the summit of second triangle strip (8) is located one on two inclined planes of first triangle strip (7).

2. The high performance, wear resistant, extrusion resistant shearer shield monitoring cabtyre cable of claim 1, wherein: the monitoring cable core (2) is arranged at the middle shaft in the filling protective layer (6), a plurality of control wires (3) and a plurality of power wires (4) are arranged, and the monitoring cable cores (2) are used as the center to be annularly arrayed in the filling protective layer (6).

3. The high performance, wear resistant, extrusion resistant shearer shield monitoring cabtyre cable of claim 1, wherein: the control wire (3) comprises a control wire core conductor (31) and a control wire core insulating sleeve (32), and the outer wall of the control wire core conductor (31) is sleeved with the control wire core insulating sleeve (32).

4. The high performance, wear resistant, extrusion resistant shearer shield monitoring cabtyre cable of claim 3, wherein: the ground wire core conductor (33) is sleeved on the outer wall of the control wire core insulating sleeve (32), the semi-conducting layer (34) is sleeved on the outer wall of the ground wire core conductor (33), and the semi-conducting layer (34) is sleeved in the filling protective layer (6).

5. The high performance, wear resistant, extrusion resistant shearer shield monitoring cabtyre cable of claim 1, wherein: power line (4) are including power sinle silk conductor (41), power sinle silk insulating boot (42) and semiconduction shielding layer (43), cup jointed semiconduction shielding layer (43) in filling inoxidizing coating (6), cup jointed power sinle silk insulating boot (42) in semiconduction shielding layer (43), cup jointed power sinle silk conductor (41) in power sinle silk insulating boot (42).