CN210142514U - Cable for bending-resistant coal mining machine - Google Patents
Cable for bending-resistant coal mining machine Download PDFInfo
- Publication number
- CN210142514U CN210142514U CN201920978643.1U CN201920978643U CN210142514U CN 210142514 U CN210142514 U CN 210142514U CN 201920978643 U CN201920978643 U CN 201920978643U CN 210142514 U CN210142514 U CN 210142514U
- Authority
- CN
- China
- Prior art keywords
- conductor
- cable
- insulating layer
- wire
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 14
- 238000005065 mining Methods 0.000 title claims abstract description 13
- 238000005452 bending Methods 0.000 title abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 83
- 239000010410 layer Substances 0.000 claims abstract description 60
- 239000011241 protective layer Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 43
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a bending-resistant cable for a coal mining machine, which comprises a conductor body and an outer protective layer extruded on the periphery of the conductor body; the lead body comprises a ground wire conductor, three power wire cores and a control wire group, wherein the three power wire cores and the control wire group are distributed around the ground wire conductor; the control wire group is formed by mutually twisting at least 3 control wire units, wherein each control wire unit comprises a middle core, an inner conductor, an inner insulating layer, an outer conductor and an outer insulating layer from inside to outside in sequence; the utility model has strong signal transmission capacity and can transmit various signals; the structure is more stable, the bending radius can be less than 3 times of the diameter of the cable, and the bending times are more than 30000 times and higher than 9000 times specified by the standard MT 818. The cable is subjected to long-term, frequent and repeated bending and straightening, and the conductor is not broken, so that the service life of the cable for the coal mining machine is prolonged.
Description
Technical Field
The utility model relates to a cable field specifically is a resistant crooked cable for coal-winning machine.
Background
At present, a cable of a coal mining machine is used for power connection and signal control of the coal mining machine under a coal mine, the using environment of the cable is very harsh, a bent part in a drag chain fixed by the cable moves along with the back-and-forth operation of the coal mining machine, the actual bending radius is about 3 times of the diameter of the cable and is far less than 6 times of the MT818 specification, the cable conductor is subjected to tensile force at the outer side of the bent semicircle, the cable conductor is subjected to extrusion force at the inner side of the bent semicircle, and the same conductor is repeatedly subjected to dynamic extrusion and tensile actions along with the movement of the bent part, so that the conductor of the cable of the coal mining machine, particularly the conductor. The prior art mostly adopts high-strength low-elongation steel wires or fiber ropes and control wire conductors to resist the harmful acting force, however, the effect is not obvious in practical application, the cable is often hard, the bending is difficult and large external force is needed, the external force acts on the steel wire ropes or the fiber ropes, under the dynamic extrusion and stretching acting force, the steel wires or the fibers influence or even destroy surrounding components such as conductors and insulating layers, and the harmful effects comprise that the structural state of the cable changes, the insulating layers are damaged, the electrical performance is reduced, the fiber ropes are decomposed and gradually broken, and even the steel wires are fatigued and broken. The service life of the cable is not effectively prolonged.
SUMMERY OF THE UTILITY MODEL
For solving prior art's not enough, the utility model provides a softer, anti tearing, resistant crooked for coal-winning machine cable more, the cable is under the operating mode of long-term, frequent, repeated bending and flare-out, and the cable conductor is not cracked to the life of cable for the coal-winning machine has been prolonged, thereby has guaranteed the long-term normal operating of coal-winning machine in the pit.
The technical idea of the utility model is that resistant crooked rather than resisting crooked, inner structure remains stable in crooked in-process, and the inside effort of destroying each other of cable is eliminated to reduce internal stress as far as. The method comprises the following specific steps:
a cable for a bending-resistant coal mining machine comprises a lead body and an outer protective layer extruded on the periphery of the lead body, wherein the lead body comprises a ground conductor, three power wire cores and a control wire group, wherein the three power wire cores and the control wire group are distributed around the ground conductor; the control wire group comprises at least 3 control wire units which are mutually twisted, wherein each control wire unit comprises a middle core, an inner conductor, an inner insulating layer, an outer conductor and an outer insulating layer, wherein the middle core is arranged outside the middle core, the inner insulating layer coats the inner conductor, and the outer conductor and the outer insulating layer are arranged outside the inner insulating layer in sequence; the inner conductors are metal wires and are uniformly distributed on the surface of the inner insulating layer in a multi-layer mode at an angle of 45-55 degrees relative to the radial direction, and the outer conductors are metal wires and are uniformly distributed on the surface of the outer insulating layer in a multi-layer mode at an angle of 45-55 degrees relative to the radial direction.
As a further improvement of the above technical solution:
the winding directions of the inner conductor and the outer conductor in the radial direction are the same.
The power wire core comprises a copper stranded wire, an insulating layer wrapping the copper stranded wire and a shielding layer outside the insulating layer.
The high-strength fiber ropes are bundled on the periphery of the conductor body in a crossed mode, and the high-strength fiber ropes are opposite in direction and identical in strand number.
The middle core is formed by wrapping a rubber buffer layer by a fiber bundle; the fiber bundle is stranded by a plurality of fiber filaments.
And a high-strength fiber rope net is embedded in the outer protective layer.
All the conductors in the lead body are oriented in the same direction and have the same twisting direction.
Has the advantages that:
1. the utility model discloses all metallic conductor include power line, ground wire and control wire conductor relative unanimous with the direction in cable axle center and the transposition direction of totality cable core, and full left side or full right side have eliminated the internal stress when the cable is crooked effectively, and the cable is softer.
2. The control line conductor adopts a multilayer structure, and the fiber rope is arranged at the center of the control line conductor so as to bear the traction force of production equipment in the production and manufacturing process and ensure that the designed angle of the metal conductor on the outer layer is unchanged in the production and manufacturing process. An insulating layer is arranged between the multiple layers of metal conductors, and each layer of metal conductor can be independently used.
3. The utility model discloses the cable is softer, and the structure is more stable, and bend radius can be less than 3 times cable diameter, and crooked number of times 30000 is more than, is higher than 9000 times that standard MT818 stipulated. The cable is subjected to long-term, frequent and repeated bending and straightening, and the conductor is not broken, so that the service life of the cable for the coal mining machine is prolonged, and the long-term normal operation of the underground coal mining machine is ensured.
4. The fiber ropes bundled outside the cable core are simultaneously embedded into the outer protective layer, so that the phenomenon of back twist after the cable core is formed can be prevented, the stability of the structure is further ensured, and the angle of the fiber ropes relative to the radial direction of the cable is 30-45 degrees, so that the flexibility of the cable is not influenced; in the same way, the angle of the fiber in the middle layer of the sheath relative to the radial direction of the cable is 40-50 degrees, the flexibility of the cable is not influenced, and the strength and the tear resistance of the sheath layer are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the control line unit of the present invention.
Reference numerals: 1. a power wire core; 3. a high strength fiber rope; 4. a high strength fiber rope web; 5. an outer jacket; 6. a control line unit; 7. a ground conductor; 61. a fiber bundle; 62. a buffer layer; 63. an inner conductor; 64. an inner insulating layer; 65. an outer conductor; 66. an outer insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the cable for a bending-resistant coal mining machine of the embodiment includes a conductor body and an outer sheath 5 extruded on the periphery of the conductor body; the high-strength fiber rope net 4 is embedded in the outer protective layer 5; high strength fibre rope net 4 plays very strong support and stretch-proofing effect, simultaneously because 4 material nature softnesses of high strength fibre rope net, do not have the influence basically to the bending property of cable, when the cable is in the bending condition, the inside interact of high strength fibre rope net 4 disperses the effort, corresponding reduction the local effort that receives of outer jacket 5, avoid causing the wearing and tearing of outer jacket 5 because of local effort is too big, also protect the internal conductor body simultaneously. The lead body comprises a ground wire conductor 7, three power wire cores 1 and a control wire group, wherein the three power wire cores 1 and the control wire group are distributed around the ground wire conductor 7; the control line group comprises at least 3 control line units 6 which are mutually twisted, the control line group is formed by twisting, the control line group is adaptive to bending resistance of the cable from the internal structure, and the cable is better in flexibility due to the twisted structure. The control line unit 6 comprises a middle core, an inner conductor 63 arranged outside the middle core, an inner insulating layer 64 covering the inner conductor 63, an outer conductor 65 outside the inner insulating layer 64 and an outer insulating layer 66 from inside to outside in sequence; the inner conductor 63 is a metal wire and is uniformly distributed on the surface of the inner insulating layer 64 in a plurality of layers at an angle of 45-55 degrees with respect to the radial direction, and the outer conductor 65 is a metal wire and is uniformly distributed on the surface of the outer insulating layer 66 in a plurality of layers at an angle of 45-55 degrees with respect to the radial direction.
Further, the method comprises the following steps of; the angle of each fiber rope in the high-strength fiber rope net 4 relative to the radial direction of the cable is 40-50 degrees.
Further, the method comprises the following steps of; the radial winding directions of the inner conductor 63 and the outer conductor 65 are the same.
Further, the method comprises the following steps of; the radial winding directions of the inner conductor 63 and the outer conductor 65 are consistent with the stranding direction of the power wire core 1.
Further, as shown in fig. 2, the diameter of the middle core is D, the diameter of the metal wire of the inner conductor 63 is D, the number of the first layer is n, the number of the second layer is n +6, the angle between the direction of the metal wire and the radial direction is α, the distance of the metal wire around the axis in one circle is L, and the diameter D of the single wire, the diameter D of the middle core, the number of the middle core and the angle α accord with the relational expression:
the number of outer conductors 65, the filament diameter d and the outer diameter of the inner insulation are designed in the same way.
Further, the method comprises the following steps of; a layer of thermosetting elastomer sheath is coated outside the control wire group, so that the outer diameter of the control wire group is equivalent to that of the power wire core, and the unbalance of the stress of the control wire group and the power wire core is correspondingly reduced. Power sinle silk 1 is the same with the control group external diameter, and 3 power sinle silks 1 is the same with 1 control group external diameter, and ground wire conductor 7 is located in the middle of power sinle silk 1 and the control group, sets up like this, and the inner structure of cable is more stable, and at the cable bending in-process, inside stress is littleer, has avoided causing local wear too fast because of the cable structure disequilibrium.
Further, the method comprises the following steps of; the middle core is formed by wrapping a fiber bundle 61 with a rubber buffer layer 62; the fiber bundle 61 is stranded by a plurality of fiber filaments.
Further, the method comprises the following steps of; all the conductors in the conductor body face in the same direction and are consistent in twisting direction. The control line conductor adopts a multilayer structure, and the fiber rope is arranged at the center of the control line conductor so as to bear the traction force of production equipment in the production and manufacturing process and ensure that the designed angle of the metal conductor on the outer layer is unchanged in the production and manufacturing process. An insulating layer is arranged among the multiple layers of metal conductors, each layer of metal conductor can be used independently, and the radial angle of 45-55 degrees ensures that the control line conductor is not subjected to axial tension in the bending process.
Furthermore, when the cable core is formed, the ground wire conductor 7 is favorable for filling the gap in the middle of the cable core so as to achieve a better supporting effect and ensure that the relative positions of the power wire core 1 and the control wire group are stable and do not change in the processes of production, manufacture and subsequent installation and use; the high-strength fiber rope 3 bundled outside the cable core is simultaneously embedded into the outer protective layer 5, so that the phenomenon of back twist after the cable core is formed can be prevented, the stability of the structure is further ensured, and the angle of the high-strength fiber rope relative to the radial direction of the cable is 30-45 degrees, so that the flexibility of the cable is not influenced; in the same way, the angle of the fiber in the middle layer of the sheath relative to the radial direction of the cable is 40-50 degrees, the flexibility of the cable is not influenced, and the strength and the tear resistance of the sheath layer are improved.
Further, the ground conductor 7 is a bare wire body. The ground wire of the bare wire body can further eliminate the influence of static electricity or electromagnetism generated inside, particularly, when the cable is used, the cable is continuously bent, stretched and extruded, the components inside the wire body are slightly displaced relative to each other to generate static electricity, and the ground wire conductor 7 quickly removes the static electricity.
Furthermore, power sinle silk 1 includes the insulating layer and the shielding layer outside the insulating layer of copper strand wires and cladding copper strand wires, and the shielding layer keeps apart inside copper strand wires and control group well, produces the electromagnetic wave after power sinle silk 1 circular telegram, and the shielding layer carries out fine shielding with the produced electromagnetic wave of power sinle silk, prevents to influence control group. The periphery of the lead body is provided with high-strength fiber ropes 3 which are opposite in direction and have the same number of crossed strands for bundling, so that the lead body is prevented from rubbing or acting too much, gaps among the components are enlarged, interaction is increased, and abrasion is caused to the functional components.
Furthermore, when the outer protective layer 5 is extruded, the outer protective layer 5 is thermosetting elastic material and fills gaps, the high-strength fiber rope 3 finally plays a supporting role and a stretch-proofing role, and when the cable is in a bending state, the high-strength fiber rope 3 can reduce the stress of each effective metal component in the conductor body to a great extent, so that the stability of the cable is greatly improved.
Further, the method comprises the following steps of; the angle of the high-strength fiber rope 3 for bundling the conductor bodies relative to the radial direction of the cable is 30-45 degrees, so that the small axial tension applied to the cable in the bending process is reduced.
The middle core is formed by wrapping a fiber bundle 61 with a rubber buffer layer 62; the fiber bundle 61 is stranded by a plurality of fiber filaments.
Furthermore, the directions of all the conductors in the lead body are the same and the twisting directions are consistent. The twisting directions are consistent, so that the cable is easier to bend, and the bending resistance in the cable is reduced. In the actual use process, the cable is prevented from being repeatedly bent and abraded too fast.
The utility model discloses in the technical scheme of each embodiment can make up, technical characteristic in the embodiment does to make up and forms new technical scheme.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a resistant crooked cable for coal-winning machine, includes the conductor body and crowded package at the outer jacket of conductor body periphery, its characterized in that: the lead body comprises a ground wire conductor, three power wire cores and a control wire group, wherein the three power wire cores and the control wire group are distributed around the ground wire conductor; the control wire group comprises at least 3 control wire units which are mutually twisted, wherein each control wire unit comprises a middle core, an inner conductor, an inner insulating layer, an outer conductor and an outer insulating layer, wherein the middle core is arranged outside the middle core, the inner insulating layer coats the inner conductor, and the outer conductor and the outer insulating layer are arranged outside the inner insulating layer in sequence; the inner conductors are metal wires and are uniformly distributed on the surface of the inner insulating layer in a multi-layer mode at an angle of 45-55 degrees relative to the radial direction, and the outer conductors are metal wires and are uniformly distributed on the surface of the outer insulating layer in a multi-layer mode at an angle of 45-55 degrees relative to the radial direction.
2. The bend-resistant shearer cable of claim 1, wherein: the winding directions of the inner conductor and the outer conductor in the radial direction are the same.
3. The bend-resistant shearer cable of claim 2, wherein: the power wire core comprises a copper stranded wire, an insulating layer wrapping the copper stranded wire and a shielding layer outside the insulating layer.
4. The bend-resistant shearer cable of claim 3, wherein: the high-strength fiber ropes are bundled on the periphery of the conductor body in a crossed mode, and the high-strength fiber ropes are opposite in direction and identical in strand number.
5. The bend-resistant shearer cable according to claim 4, wherein: the middle core is formed by wrapping a rubber buffer layer by a fiber bundle; the fiber bundle is stranded by a plurality of fiber filaments.
6. The bend-resistant shearer cable of claim 5, wherein: and a high-strength fiber rope net is embedded in the outer protective layer.
7. The bend-resistant coal mining machine cable according to claim 1 or 6, wherein: all the conductors in the lead body face in the same direction and have the same twisting direction; the outer diameters of the power wire core and the control wire group are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920978643.1U CN210142514U (en) | 2019-06-27 | 2019-06-27 | Cable for bending-resistant coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920978643.1U CN210142514U (en) | 2019-06-27 | 2019-06-27 | Cable for bending-resistant coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210142514U true CN210142514U (en) | 2020-03-13 |
Family
ID=69735620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920978643.1U Active CN210142514U (en) | 2019-06-27 | 2019-06-27 | Cable for bending-resistant coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210142514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822939A (en) * | 2022-05-28 | 2022-07-29 | 齐鲁电缆有限公司 | Optical fiber composite cable for flat mining excavation equipment |
-
2019
- 2019-06-27 CN CN201920978643.1U patent/CN210142514U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822939A (en) * | 2022-05-28 | 2022-07-29 | 齐鲁电缆有限公司 | Optical fiber composite cable for flat mining excavation equipment |
| CN114822939B (en) * | 2022-05-28 | 2024-05-07 | 齐鲁电缆有限公司 | Optical fiber composite cable for flat type mining excavating equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104751944B (en) | Electric wire of drag chain system and manufacturing method of electric wire | |
| CN105448412B (en) | Flat combination drag chain cable and preparation method thereof | |
| CN201527811U (en) | Novel cable for coal winning machine | |
| CN210142514U (en) | Cable for bending-resistant coal mining machine | |
| CN205789180U (en) | Novel elevator cable | |
| CN104835563A (en) | Highly-flexible wear-resistant bending-resistant robot encoder cable | |
| CN204680439U (en) | A kind of exploration cable | |
| CN204946567U (en) | A kind of robot body signal cable | |
| CN212010392U (en) | Tensile-resistant elevator shielding flat cable | |
| CN211455378U (en) | Power control optical fiber composite flat cable for drag chain | |
| CN209843300U (en) | Cable for bending-resistant coal mining machine | |
| WO2024183228A1 (en) | Tensile- and bending-resistant power and control signal combined reel cable | |
| CN216119605U (en) | Tensile wear-resistant control cable | |
| CN214671889U (en) | Towline cable with air pipe | |
| CN216053917U (en) | High-flexibility towline cable | |
| CN212181953U (en) | Photoelectric composite flexible festoon cable | |
| CN205810417U (en) | A kind of flexible dynamic control of tension is combined reel flat cable | |
| CN204440924U (en) | Subway communication pair twist shielded type cable | |
| CN214705479U (en) | Tensile type shielding flat cable | |
| CN211828254U (en) | Power control flexible cable for airport system | |
| CN210156135U (en) | Side-by-side drag chain cable | |
| CN211654381U (en) | Tensile wear-resistant reel cable | |
| CN219759241U (en) | Thermoplastic elastomer sheath multicore combined cable | |
| CN213424632U (en) | Medium-voltage reel photoelectric composite flexible cable | |
| CN113161055A (en) | High-flexibility power drag chain control cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |