Novel shuttle car cable for coal mine

Abstract

The utility model relates to a novel shuttle car cable for a coal mine, which belongs to the technical field of shuttle car cables and comprises an outer sheath, a conductive structure is arranged in the outer sheath, and three main wire cores and a control wire core form a rhombic structure and form a first connecting area and a second connecting area. The three main wire cores and the control wire core are adopted to form a rhombic structure, the wrapping tape layer is wound and attached to the outer side of the filling layer, inward acting force is applied to the filling layer, the three main wire cores and the control wire core are extruded at the same time, and the three main wire cores and the control wire core are extruded at the same time, so that the special performance of tension resistance, bending resistance, winding resistance, flexing resistance, extrusion resistance and the like of the cable conductor is improved. Buffering is carried out through the first connecting area and the second connecting area, the multiple sets of first conductor reinforcing cores are installed in the filling layer, the compactness of the cable core is enhanced, the tensile resistance is enhanced, the strength of the cable is improved, the stress of the cable is symmetrical and balanced, and the cable is not prone to being damaged due to stress concentration.

Description

TECHNICAL FIELD

[0001] The utility model relates to shuttle car cable technical field, specifically point to a new type coal mine shuttle car cable. BACKGROUND

[0002] The shuttle car is used for transporting coal and moves between the coal mining face and the conveying belt. One end of the shuttle car cable is connected with the shuttle car, and the other end is connected with the power supply. With the movement of the shuttle car, the cable is always in a periodic motion state of being wound - straightened - rewound - straightened. Due to the harsh environment in the coal mine, the cable is often stretched and curled and has to bear a large tension, and is always in a high load and overload operation state, which often causes the cable to break, short circuit, conductor heating, insulation layer damage, spiral deformation and sheath damage, and further leads to short service life and high cost of the cable.

[0003] Prior art: patent number 201710514888.4, patent name a coal mine low smoke halogen-free shuttle car cable, including cable core, the cable core is composed of three power line cores, two non-insulated ground wire cores and a monitoring line core; an environmentally friendly expansion fire barrier module is arranged in the hollow part of the cable core, a semiconductive tape is arranged outside the cable core, a low smoke halogen-free flame-retardant rubber inner sheath with ethylene propylene terpolymer as a base material is arranged outside the semiconductive tape, a aramid fiber filament reinforcing layer is braided outside the low smoke halogen-free flame-retardant rubber inner sheath, a low smoke halogen-free flame-retardant rubber outer sheath with ethylene propylene terpolymer as a base material is arranged outside the aramid fiber filament reinforcing layer, and paraffin is coated on the outer surface of the low smoke halogen-free flame-retardant rubber outer sheath. Since the cable lacks a tensile buffer element, the overall tensile resistance of the cable does not meet the use requirements, and the strength, tear resistance and wear resistance cannot meet the use requirements in harsh working conditions. UTILITY MODEL CONTENTS

[0004] The utility model solves the above technical problem and provides a new type coal mine shuttle car cable.

[0005] To solve the above technical problem, the utility model provides the technical scheme:

[0006] A new type coal mine shuttle car cable, comprising an outer sheath, wherein the outer sheath is internally provided with a conductive structure;

[0007] The conductive structure comprises three main line cores, a control line core, a monitoring line core, a second conductor reinforcing core, a wrapping tape layer and a steel belt armor layer;

[0008] The wrapping tape layer is filled with a filling layer between the main line cores and the control line core;

[0009] The three main line cores and the control line core form a rhombus structure and form a first connection area and a second connection area, the monitoring line core is installed in the first connection area, and the second conductor reinforcing core is installed in the second connection area;

[0010] The steel belt armor layer is located outside the wrapping tape layer.

[0011] Preferably, a plurality of groups of first conductor reinforcing cores are installed in the filling layer.

[0012] Preferably, the diameter of the second conductor reinforcing core is twice that of the first conductor reinforcing core.

[0013] Preferably, the three main line cores successively comprise a conductor, a conductor shielding layer, a first insulating layer, a corrugated aluminum sheath, a braided layer and an outer jacket layer from inside to outside.

[0014] Preferably, the braided layer is an aramid fiber braided layer.

[0015] Preferably, the outer sheath is greater than the thickness of the outer jacket layer.

[0016] Preferably, the control line core comprises a zero line and a plurality of groups of signal lines arranged outside the zero line, and the plurality of groups of signal lines successively comprise a second insulating layer and a metal shielding layer.

[0017] With the above structure, the utility model has the following advantages:

[0018] The utility model discloses a cable core structure, which comprises a filling layer, a wrapping tape layer, a first connecting area, a second connecting area, a second conductor reinforcing core, a three main line cores and a control line core.

[0019] The utility model fully utilizes the space position in structure, reduces manufacturing cost, improves the function level of cable, and the cable force symmetry, balance, does not easily produce stress concentration and destroy to cable.

[0020] The above summary is intended to illustrate the description only and is not intended to limit in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] Figure 1 It is a schematic diagram of cross-sectional structure of the utility model.

[0023] As shown in the figure: 1, outer sheath; 2, monitoring core; 3, control core; 301, zero line; 302, signal line; 303, second insulation layer; 304, metal shielding layer; 4, main core; 401, conductor; 402, conductor shielding layer; 403, first insulation layer; 404, corrugated aluminum sheath; 405, braided layer; 406, sheath layer; 5, second conductor reinforcing core; 6, wrapping tape layer; 7, steel belt armored layer; 8, first conductor reinforcing core; 9, filling layer; 10, first connecting area; 11, second connecting area. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The utility model will be further described in detail below in combination with the whole text.

[0027] In combination with the accompanying Figure 1 A novel shuttle car cable for coal mine, including outer sheath 1, outer sheath 1 inside is equipped with conductive structure;

[0028] The conductive structure includes three main cores 4, control core 3, monitoring core 2, second conductor reinforcing core 5, wrapping tape layer 6, steel belt armored layer 7;

[0029] The wrapping tape layer 6 and the main core 4 and the control core 3 are filled with the filling layer 9 between them.

[0030] The three main wire cores 4 and the control wire core 3 form a diamond structure and form a first connecting area 10 and a second connecting area 11, the monitoring wire core 2 is installed in the first connecting area 10, and the second conductor reinforcing core 5 is installed in the second connecting area 11;

[0031] The steel belt armor layer 7 is located outside the wrapping tape layer 6.

[0032] The diameter of the second conductor reinforcing core 5 is twice that of the first conductor reinforcing core 8.

[0033] The three main wire cores 4 sequentially comprise a conductor 401, a conductor shielding layer 402, a first insulation layer 403, a crimped aluminum protective layer 404, a braided layer 405 and an outer jacket layer 406 from inside to outside, the conductor 1 meets the standard requirements of GB / T 3956-2008, in order to improve the tensile strength of the cable, the filling layer 9 is attached to the three main wire cores 4 and the control wire core 3, and is attached to the outside of the filling layer 9 by wrapping the wrapping tape layer 6, an inward force is applied to the filling layer 9, the three main wire cores 4 and the control wire core 3 are simultaneously extruded, and the first connecting area 10 and the second connecting area 11 are used for buffering, a plurality of first conductor reinforcing cores 8 are installed in the filling layer 9, which is beneficial to the compactness of the cable core, the tensile strength is enhanced, the strength of the cable is increased, the stress of the cable is symmetrical and balanced, and the cable is not easily damaged due to stress concentration.

[0034] The three main wire cores 4, the monitoring wire core 2 and the second conductor reinforcing core 5 are simultaneously extruded, which is beneficial to the compactness of the cable core and the enhancement of the tensile strength, the first conductor reinforcing core 3 is installed in the buffering block 8, the strength of the cable is increased, the stress of the cable is symmetrical and balanced, and the cable is not easily damaged due to stress concentration.

[0035] The braided layer 405 is an aramid fiber braided layer, which can improve the torsion resistance and bending resistance of the cable.

[0036] The wrapping tape layer 6 is a wrapping tape woven from an alkali-free glass fiber yarn, which has good insulation performance, high temperature resistance and the like, good compatibility with various resins and insulation paint, strong permeability, excellent electrical performance, heat preservation and insulation, fireproof and flame retardant, corrosion resistance, aging resistance, weather resistance, smooth appearance, high strength, low density, high temperature resistance, good insulation, good heat insulation effect, high temperature resistance up to 800 degrees, and instantaneous temperature up to 1000 degrees.

[0037] The filling layer 9 is a high-temperature flame-retardant filling rope, which is a material with high strength, high tensile property, low elongation, high modulus, high breaking strength, high temperature resistance, flame retardance, non-melting, non-combustion, carbonization, high chemical resistance, high stability, anti-creep, low thermal expansion coefficient and electrical insulator.

[0038] The outer sheath 1 is greater than the thickness of the outer jacket layer 407. The outer sheath 1 and the outer jacket layer 407 can adopt a polyurethane material, the strength of which is greater than 30 MPa, the elongation of which is greater than 300%, the tear resistance of which is greater than 20 N / mm, the abrasion loss of which is less than 10 mm, and the performance advantage of which is more than twice that of ordinary chlorinated polyethylene or neoprene sheath.

[0039] The control wire core 3 comprises a zero line 301 and a plurality of groups of signal lines 302 arranged outside the zero line 301, and the plurality of groups of signal lines 302 sequentially comprise a second insulating layer 303 and a metal shielding layer 304.

[0040] The working principle of the utility model is as follows:

[0041] By changing the traditional cable core structure, the special properties of the cable conductor such as tensile resistance, bending resistance, winding resistance, flex resistance and extrusion resistance are improved, three main wire cores 4 and a control wire core 3 form a rhombus structure and form a first connecting area 10 and a second connecting area 11, the monitoring wire core 2 is installed in the first connecting area 10, the second conductor reinforcing core 5 is installed in the second connecting area 11, and the filling layer 9 is wrapped and attached to the outside of the filling layer 9 through the wrapping tape layer 6, an inward force is applied to the filling layer 9, the three main wire cores 4 and the control wire core 3 are extruded, and the first connecting area 10 and the second connecting area 11 are buffered, a plurality of first conductor reinforcing cores 8 are installed in the filling layer 9, which is beneficial to the compactness of the cable core, enhances the tensile force, increases the strength of the cable, the stress of the cable is symmetrical and balanced, and stress concentration is not easy to occur, thereby avoiding damage to the cable, the problem of short service life of the shuttle cable caused by broken core is solved, the mechanical strength and softness of the cable are improved, and the service life of the cable is improved.

[0042] The utility model and its implementation mode are described above, and the description is not restrictive. The embodiment shown in the full text is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed without departing from the technical scheme, which shall belong to the protection scope of the utility model.

Claims

1. A new type of shuttle car cable for coal mines, comprising an outer sheath (1), characterized in that, The outer sheath (1) is internally provided with a conductive structure; The conductive structure comprises three main cores (4), a control core (3), a monitoring core (2), a second conductor reinforcing core (5), a wrapping tape layer (6), and a steel belt armor layer (7); The wrapping tape layer (6) is filled with a filling layer (9) between the main core (4) and the control core (3); The three main cores (4) and the control core (3) form a diamond structure and form a first connecting area (10) and a second connecting area (11), the monitoring core (2) is installed in the first connecting area (10), and the second conductor reinforcing core (5) is installed in the second connecting area (11); The steel belt armor layer (7) is located outside the wrapping tape layer (6).

2. The new type of shuttle car cable for coal mine according to claim 1, characterized in that: A plurality of first conductor reinforcing cores (8) are installed in the filling layer (9).

3. The new type of shuttle car cable for coal mine according to claim 2, characterized in that: The diameter of the second conductor reinforcing core (5) is twice that of the first conductor reinforcing core (8).

4. The new type of shuttle car cable for coal mine according to claim 1, characterized in that: The three main cores (4) sequentially comprise a conductor (401), a conductor shielding layer (402), a first insulation layer (403), a corrugated aluminum sheath (404), a braided layer (405), and an outer sheath layer (406) from inside to outside.

5. The new type of shuttle car cable for coal mine according to claim 4, characterized in that: The braided layer (405) is an aramid fiber braided layer.

6. The new type of shuttle car cable for coal mine according to claim 4, characterized in that: The outer sheath (1) is greater than the thickness of the outer sheath layer (406).

7. The new type of shuttle car cable for coal mine according to claim 1, characterized in that: The control core (3) comprises a zero line (301) and a plurality of signal lines (302) arranged outside the zero line (301), and the plurality of signal lines (302) sequentially comprise a second insulation layer (303) and a metal shielding layer (304).

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