CN212934239U

CN212934239U - Intelligent optical fiber composite coal mining machine flexible cable for coal mine

Info

Publication number: CN212934239U
Application number: CN202021564636.6U
Authority: CN
Inventors: 钱章兴; 刘春艳; 林朝勇; 顾婷雯; 陆燕辉
Original assignee: Shanghai Lanhao Electric Co ltd
Current assignee: Shanghai Lanhao Electric Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-09
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses an intelligence is compound coal-winning machine flexible cable of optic fibre for coal mine, including compound cable core and the oversheath of cladding outside compound cable core, compound cable core is by three power sinle silks, a mixed cable core and a ground core are constituteed, three power sinle silks and a mixed cable core use ground core as the center transposition outside it, the power sinle silk is by power sinle silk conductor, power line insulating layer, power line insulation shielding layer, power metal weaving layer is constituteed, mixed cable core is by three control lines, an optical fiber unit, chlorinated polyethylene rubber sheath and mixed metal weaving layer are constituteed, the cable has had power transmission concurrently, the function of control signal transmission and optical fiber communication transmission, compact structure has simultaneously, bending resistance is strong, and be convenient for the characteristics of quick safe convenient installation cable connector; meanwhile, the safety level of the cable during working is improved, and the working difficulty of a front-line worker is reduced.

Description

Intelligent optical fiber composite coal mining machine flexible cable for coal mine

Technical Field

The utility model relates to a cable that the mine industry field used, concretely relates to intelligence is compound coal-winning machine flexible cable of optic fibre for coal mine.

Background

The existing coal mining machine cable only has the functions of transmitting electric energy and simple control, even a part of cables with data buses have the problems of narrow transmission frequency band, small communication capacity and easy electromagnetic interference, so that the problems of incapable real-time large-scale transmission of field pictures and even frequent data interruption are caused, and the development requirement of intellectualization and unmanned development of a coal mining working face of a coal mine in the future cannot be met.

The composite cable with the optical fibers exists in the market at present, the optical fibers of the composite cable are generally arranged in the center of the cable, the composite cable cannot be well adapted to the cable connector which can be matched with the optical fiber composite cable in the market at present, the risk of bending and breaking of the optical fibers is easily increased in the installation process, and meanwhile, the explosion-proof problem in underground mines is not easily met.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at solving the not enough among the prior art, provide a flexible coal-winning machine cable that collection power transmission, control and fiber communication function are integrative, this cable possesses control line, optic fibre and the equal life-span of power line advantage, and the optic fibre of compound in the control line simultaneously can satisfy the short-term transmission a large amount of data, does not receive electromagnetic interference simultaneously and makes things convenient for the compound coal-winning machine rubber cover flexible cable of optic fibre of current connector installation.

The technical scheme is as follows: the utility model discloses an optical fiber composite coal mining machine flexible cable for intelligent coal mine, which comprises a composite cable core and an outer sheath coated outside the composite cable core, wherein the composite cable core consists of three power wire cores, a mixed cable core and a ground wire core, and a semi-conducting belt is wrapped outside the ground wire; the three power wire cores and the mixed cable core are stranded outside the cable core by taking the ground wire core as a center, the power wire core consists of a power wire core conductor, a power wire insulating layer, a power wire insulating shielding layer and a power metal braiding layer, and the power wire insulating layer, the power wire insulating shielding layer and the power metal braiding layer are sequentially arranged on the power wire core conductor from inside to outside; the hybrid cable core is composed of three control lines, an optical fiber unit, a chlorinated polyethylene rubber sheath and a hybrid metal woven layer, the chlorinated polyethylene rubber sheath is directly wrapped outside the three control lines and the optical fiber unit, and the hybrid metal woven layer is wrapped outside the polyethylene rubber sheath.

Furthermore, the power core conductor in the power core is formed by bundling and twisting soft copper stranded wires, the bundle wire pitch diameter ratio is less than 20, and the twisting pitch diameter ratio is less than 10; the power line insulation layer is made of high-strength ethylene propylene rubber, the power line insulation shield is formed by mixing special high polymer materials, the stripping force of the power line insulation shield meets the standard of a mineral cable, the power line insulation shield can be easily stripped, and the transition resistance is less than 2000 ohms; the power metal braided layer is formed by mixing and braiding copper wires and high-strength fibers, and the coverage rate is more than 100%.

Furthermore, the control line consists of a control line core conductor and a control line insulating layer coated outside the control line core conductor; the control wire core conductor is formed by twisting 5 types of soft copper wire bundles; the control wire insulating layer is made of ethylene propylene rubber.

Furthermore, the optical fiber unit is composed of an optical fiber core, an optical fiber tight sleeve, an aramid fiber reinforced layer and an optical fiber sheath, wherein the optical fiber tight sleeve is sleeved on the optical fiber core, the aramid fiber reinforced layer is wrapped outside the optical fiber tight sleeve, and the optical fiber sheath is wrapped outside the aramid fiber reinforced layer.

Further, the optical fiber sheath is made of chlorinated polyethylene rubber.

Furthermore, the outer sheath is prepared from high-strength chlorinated polyethylene rubber, the tensile strength of the outer sheath is greater than 15.5MPa, the elongation is greater than 300%, the tear strength is greater than 7N/mm, and the bundled combustion level reaches A class.

Furthermore, the ground wire is formed by twisting soft copper stranded wires.

Has the advantages that: the utility model relates to an intelligence is compound coal-winning machine flexible cable of optic fibre for coal mine has had power transmission concurrently, and control signal transmission and fiber communication transmission's function has compact structure simultaneously, and anti bending property is strong to be convenient for quick safe convenient installation cable connector's characteristics. This effectual security level that has improved the cable during operation has reduced a ray of workman's the work degree of difficulty, has improved the work efficiency of mining.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the utility model in a use state;

1. a power wire core; 11. a power core conductor; 12. a power line insulating layer; 13. a power line insulation shielding layer; 14. a power metal braid; 2. a control line; 21. a control wire core conductor; 22. a control wire core insulating layer; 3. an optical fiber unit; 31. an optical fiber core; 32. tightening the optical fiber sleeve; 33. an aramid fiber reinforcement layer; 34. an optical fiber jacket; 4. chlorinated polyethylene rubber sheaths; 5. mixing a metal woven layer; 6. a ground wire; 7. an outer sheath.

Detailed Description

The technical scheme shown in figure 1 is as follows: an optical fiber composite coal mining machine flexible cable for an intelligent coal mine comprises a composite cable core and an outer sheath 7 coated outside the composite cable core, wherein the composite cable core consists of three power wire cores 1, a mixed cable core and a ground wire 6, and a semi-conducting belt is wound outside the ground wire 6; the ground wire 6 is formed by twisting soft copper stranded wires; the three power wire cores 1 and one mixed cable core are stranded outside the power wire core 1 by taking a ground wire 6 core as a center, the power wire core 1 consists of a power wire core 1 conductor, a power wire insulating layer 12, a power wire insulating shielding layer 13 and a power metal braiding layer 14, and the power wire insulating layer 12, the power wire insulating shielding layer and the power metal braiding layer 14 are sequentially arranged on the power wire core 1 conductor from inside to outside; the hybrid cable core is composed of three control wires 2, an optical fiber unit 3, a chlorinated polyethylene rubber sheath 4 and a hybrid metal braided layer 5, the chlorinated polyethylene rubber sheath 4 is directly wrapped outside the three control wires 2 and the optical fiber unit 3, and the hybrid metal braided layer 5 is wrapped outside the polyethylene rubber sheath.

Furthermore, the conductors of the power wire core 1 in the power wire core 1 are formed by bundling soft copper stranded wires, the bundle wire pitch diameter ratio is less than 20, and the stranding pitch diameter ratio is less than 10, so that the power wire core has excellent structural stability and bending resistance; the power line insulating layer is made of high-strength ethylene propylene rubber, so that the power line insulating layer has excellent electrical insulating property and excellent mechanical property; the power line insulation shield is produced by adopting a technology which can be easily stripped from the insulation, the stripping force meets the requirement of a mining cable, the transition resistance is less than 2000 omega, and good wire stripping convenience and use safety performance are brought to workers; the power metal braiding layer 14 is formed by weaving copper wires and high-strength fibers in a mixed mode through a 36-spindle braiding machine, the coverage rate is larger than 100%, and electromagnetic interference on the control wire 2 core is prevented.

Further in this example, the control wire 2 is composed of a control wire core conductor 21 and a control wire insulating layer 22 coated outside the control wire core conductor 21; the control wire core conductor 21 is formed by twisting 5 types of soft copper wire bundles; the control line insulating layer 22 is made of ethylene propylene rubber with excellent electrical and mechanical properties.

Further in this example, the optical fiber unit 3 is composed of an optical fiber core 31, an optical fiber tightening sleeve 32, an aramid fiber reinforcement layer 33, and an optical fiber sheath 34, the optical fiber tightening sleeve 32 is sleeved on the optical fiber core 31, the aramid fiber reinforcement layer 33 is wrapped outside the optical fiber tightening sleeve 32, and the optical fiber sheath 34 is wrapped outside the aramid fiber reinforcement layer 33.

In this embodiment, the 6-core conductor of the ground wire is formed by twisting 5-type soft conductors, and has good flexibility and bending resistance. The sectional area of the conductor of the ground wire 6 is calculated according to the central gap area of the power wire and the mixed cable core, and the compact structure is achieved, so that the outer diameter of the whole cable is smaller.

Further in this example, the optical fiber sheath 34 is made of chlorinated polyethylene rubber.

In this embodiment, the outer sheath 7 is made of high-strength chlorinated polyethylene rubber, and has a tensile strength greater than 15.5MPa, an elongation greater than 300%, a tear strength greater than 7N/mm, a bundled combustion level up to a class a, oil resistance, wear resistance, impact resistance and other comprehensive properties, and excellent cable core protection effect and safety performance.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides an intelligence is compound coal-winning machine flexible cable of optic fibre for coal mine, includes compound cable core and the cladding at the outside oversheath of compound cable core, its characterized in that: the composite cable core consists of three power wire cores, a mixed cable core and a ground wire, and the ground wire is wrapped with a semi-conducting belt; the three power wire cores and the mixed cable core are stranded outside the cable core by taking the ground wire core as a center, the power wire core consists of a power wire core conductor, a power wire insulating layer, a power wire insulating shielding layer and a power metal braiding layer, and the power wire insulating layer, the power wire insulating shielding layer and the power metal braiding layer are sequentially arranged on the power wire core conductor from inside to outside; the hybrid cable core is composed of three control lines, an optical fiber unit, a chlorinated polyethylene rubber sheath and a hybrid metal woven layer, the chlorinated polyethylene rubber sheath is directly wrapped outside the three control lines and the optical fiber unit, and the hybrid metal woven layer is wrapped outside the polyethylene rubber sheath.

2. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 1, wherein: the power cable core conductor in the power cable core is formed by bundling soft copper stranded wires, the bundle wire pitch diameter ratio is less than 20, and the stranding pitch diameter ratio is less than 10; the power line insulating layer is made of high-strength ethylene propylene rubber, and the transition resistance of the power line insulating shield is less than 2000 ohms; the power metal braided layer is formed by mixing and braiding copper wires and high-strength fibers, and the coverage rate is more than 100%.

3. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 1, wherein: the control line consists of a control line core conductor and a control line insulating layer coated outside the control line core conductor; the control wire core conductor is formed by twisting 5 types of soft copper wire bundles; the control wire insulating layer is made of ethylene propylene rubber.

4. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 1, wherein: the optical fiber unit is composed of an optical fiber core, an optical fiber tight sleeve, an aramid fiber reinforcing layer and an optical fiber sheath, wherein the optical fiber tight sleeve is sleeved on the optical fiber core, the aramid fiber reinforcing layer is wrapped outside the optical fiber tight sleeve, and the optical fiber sheath is wrapped outside the aramid fiber reinforcing layer.

5. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 4, wherein: the optical fiber sheath is made of chlorinated polyethylene rubber.

6. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 1, wherein: the outer sheath is prepared from high-strength chlorinated polyethylene rubber, the tensile strength of the outer sheath is greater than 15.5MPa, the elongation is greater than 300%, the tear strength is greater than 7N/mm, and the bundled combustion level reaches A class.

7. The optical fiber composite shearer flexible cable for the intelligent coal mine according to claim 1, wherein: the ground wire is formed by bundling and twisting soft copper stranded wires.