CN201477950U - Mine coal cutter rubber sleeve soft cable control line core - Google Patents
Mine coal cutter rubber sleeve soft cable control line core Download PDFInfo
- Publication number
- CN201477950U CN201477950U CN2009201440569U CN200920144056U CN201477950U CN 201477950 U CN201477950 U CN 201477950U CN 2009201440569 U CN2009201440569 U CN 2009201440569U CN 200920144056 U CN200920144056 U CN 200920144056U CN 201477950 U CN201477950 U CN 201477950U
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- core
- control line
- conductors
- line core
- rubber sleeve
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Abstract
The utility model discloses a mine coal cutter rubber sleeve soft cable control line core, which comprises a protection sleeve, conductors, an insulating body and a polyester belting, wherein at least three conductors are sleeved in the protection sleeve, the conductors are twisted by three power line cores and a control line core to form a cable, the outer portions of the conductors are coated with the insulating body, the outer portion of the insulating body is coated with the polyester belting, the inner wall of the protection sleeve is provided with the polyester belting of the protection sleeve, the three conductors are arranged in a delta shape, and a rubber pad core is arranged between the delta-shaped centers of the three conductors. Through using the mine coal cutter rubber sleeve soft cable control line core, the softness of the control line core is increased, the power which is applied on the control line core can be buffered because of the elasticity of the rubber pad core and the softness of the control line core, thereby fundamentally solving the difficult problems of bending and breaking core of the control line core, and increasing the service life.
Description
Technical field
The utility model belongs to the cable preparation field, particularly a kind of mining coal-winning machine rubber sleeve flexible cable control core.
Background technology
The coal-winning machine rubber sleeve flexible cable is a underground mine use coal-winning machine electric power connection line, and it moves along with the motion of coal-winning machine, because of working environment at coal mines comparatively abominable, so also relatively harsher to the instructions for use of cable.The national standard that this product is carried out is GB12972-1991, and on this standard base, former State Administration of Coal Industry has issued the MT818-1999 standard.Product structure is: red, white, blue three master cores are stranded jointly with the control core that prior strand makes, and the ground core is in the center.Control line core insulation material should adopt the material of perfluoroethylene-propylene or similar performance, and finished cable insulation tensile strength should be not less than 13.8Mpa, the insulation percentage elongation is not less than 100%.Control core number should be no less than 3, and stranded lay ratio is not more than 8, and direction of lay is a left-hand, can band or rubber coating layer, and external diameter and master core after the stranded coating are close.The coal in China industry generally reflects when using the coal-winning machine rubber sleeve flexible cable lacks in control core easy fracture, useful life, is the crucial matching component of restriction coal-winning machine coal mining efficient.The control core of electric cable for coal mining machine mainly plays the effect of signal monitoring; but in the cable running because of being subjected to multiple mechanical stress effects such as frequent bending, stretching; easily cause controlling the fracture of core; the control core will be in case fracture will lose the monitoring and protection effect; and cause equipment to stop operating; had a strong impact on user's use, caused very big loss to the user.Therefore, the easily broken core of electric cable for coal mining machine control core short problem in useful life is the difficult problem of puzzlement coal industry and cable enterprise always, though the coal industry standard has also been made special regulation to control core material therefor, but still fundamentally is not resolved.
Summary of the invention
The purpose of this utility model provides a kind of electric cable for coal mining machine control core and is convenient to crooked flexiblely, prevents the control line chip bending core that break, and the mining coal-winning machine rubber sleeve flexible cable that prolongs electric cable for coal mining machine useful life is controlled core.
For achieving the above object, solution of the present utility model is: a kind of mining coal-winning machine rubber sleeve flexible cable control core, form by sheath, conductor, insulator, polyester band, be set with at least three conductors in described this sheath, described conductor is made up of with a stranded stranding of control core three power cores, described this conductor outside is surrounded by insulator, described insulator exterior is surrounded by the polyester band, the inwall of described sheath is provided with sheath polyester band, described three conductors are isosceles triangle to be arranged, and is provided with the rubber bedding core between the isosceles triangle center of three conductors.
Adopt above-mentioned mining coal-winning machine rubber sleeve flexible cable control core, its cable control core generally all is no less than 3, and the control core then must first stranding, and as four-core with other three stranded strandings of power core, therefore, the size of stranding lay ratio directly affects the flexibility of cable.Lay ratio is more little, and flexibility is good more.For increasing the flexibility of control core, the bigger rubber bedding core in cross section is placed at center at control core stranding, adopt less laying up pitch simultaneously, like this, electric cable for coal mining machine is in use controlled core and is convenient to crooked flexible, make the power of control on the core that puts on, can be cushioned, thereby fundamentally solved the difficult problem of the disconnected core of control line chip bending because of the elasticity of rubber bedding core and the flexibility of control core.Electric cable for coal mining machine in use because effect frequent crooked and that stretch can make the control core move around, big more easy more its core core that breaks that causes of the resistance that the control core is subjected in this moving process.At the control core disconnected core that drags, draws phenomenon to cause in use, we are wrapped one deck polyester band outside the single control core that has squeezed insulation earlier, wrapped again one deck polyester band behind the stranded then stranding, and crowded one deck rubber sheath, so just increased the relative slipping property of control core, make the control core when stressed, can access certain buffering, thereby improve useful life.
Recommend the nominal cross of control line core conductor to adopt 2.5mm in the MT818-1999 standard
2Or 4mm
2, can suitably strengthen cross-sectional area of conductor in the actual production, thereby improve conductor intensity.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1, be set with at least three conductors 1 in the sheath 6 of this is mining coal-winning machine rubber sleeve flexible cable control core, described conductor 1 is made up of with a stranded stranding of control core three power cores, described this conductor 1 outside is surrounded by insulator 2, described insulator 2 outsides are surrounded by polyester band 3, the inwall of described sheath 6 is provided with sheath polyester band 4, and described three conductors 1 are isosceles triangle to be arranged, and is provided with rubber bedding core 5 between the isosceles triangle center of three conductors 1.
Claims (1)
1. a mining coal-winning machine rubber sleeve flexible cable is controlled core, by sheath, conductor, insulator, the polyester band is formed, it is characterized in that: be set with at least three conductors (1) in described this sheath (6), described conductor (1) is made up of with a stranded stranding of control core three power cores, described this conductor (1) outside is surrounded by insulator (2), described insulator (2) outside is surrounded by polyester band (3), the inwall of described sheath (6) is provided with sheath polyester band (4), described three conductors (1) are isosceles triangle to be arranged, and is provided with rubber bedding core (5) between the isosceles triangle center of three conductors (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201440569U CN201477950U (en) | 2009-09-08 | 2009-09-08 | Mine coal cutter rubber sleeve soft cable control line core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201440569U CN201477950U (en) | 2009-09-08 | 2009-09-08 | Mine coal cutter rubber sleeve soft cable control line core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477950U true CN201477950U (en) | 2010-05-19 |
Family
ID=42414208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201440569U Expired - Lifetime CN201477950U (en) | 2009-09-08 | 2009-09-08 | Mine coal cutter rubber sleeve soft cable control line core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489286A (en) * | 2016-02-14 | 2016-04-13 | 上海朗达电缆（集团）有限公司 | Cable for electric vehicle charging pile and manufacturing method of cable |
-
2009
- 2009-09-08 CN CN2009201440569U patent/CN201477950U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489286A (en) * | 2016-02-14 | 2016-04-13 | 上海朗达电缆（集团）有限公司 | Cable for electric vehicle charging pile and manufacturing method of cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |