CN216719546U

CN216719546U - Reinforced coal mining machine cable

Info

Publication number: CN216719546U
Application number: CN202122936138.0U
Authority: CN
Inventors: 李勇军; 沈智飞; 毛开裕; 陈光高; 刘峰; 熊玺; 王娟
Original assignee: Sunway Co Ltd
Current assignee: Sunway Co Ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-06-10
Anticipated expiration: 2031-11-27

Abstract

The utility model discloses a reinforced coal mining machine cable which comprises a composite cable core and a sheath coated outside the composite cable core, wherein the composite cable core is formed by twisting three power wire cores, a bare ground wire core conductor and a control cable core, the three power wire cores and the control cable core are concentrically twisted, and the bare ground wire core conductor is placed in the middle of the cable core. The power wire core comprises a power wire core conductor, a power wire core insulation layer and a tinned copper wire and aramid fiber braided layer; the control cable core is formed by stranding 3 or more than 3 control cable cores and is extruded with a high-strength coating cover layer; the control wire core comprises a control wire core conductor and a control wire core insulator. The cable disclosed by the utility model is not only soft and good in bending resistance, but also has the characteristics of high strength, high wear resistance, environmental friendliness and the like, so that the purpose of prolonging the service life is achieved.

Description

Reinforced coal mining machine cable

Technical Field

The utility model relates to a cable of a coal mining machine, in particular to a cable of a coal mining machine with a reinforcing structure.

Background

The coal mining machine cable comprises a power wire core, a ground wire core and a control wire core, wherein the coal mining machine cable is frequently bent and stretched in the using process, the bending radius is small, meanwhile, the cable is influenced by external forces such as coal block impact, various mechanical extrusion and the like, the requirements on the flexibility and the bending resistance of the cable are particularly high, the cable is easily damaged, particularly the control wire core is small in conductor sectional area, small in tensile resistance, easy to break by the whole core after bending and stretching, and particularly short in service life. The commonly used steel wire armoring can only bear tensile force and cannot bear extrusion force, steel strip armoring can bear the extrusion force of higher pressure but cannot bear the tensile force, and meanwhile, two armored cables are not soft and cannot meet the use requirements of the coal mining machine cable.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide the reinforced coal mining machine cable which is not only soft and good in bending resistance, but also has the characteristics of high strength, high wear resistance, environmental protection and the like, so that the purpose of prolonging the service life is achieved.

In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a strenghthened type coal-winning machine cable, includes composite cable core and the sheath of cladding outside composite cable core, composite cable core is formed by three power sinle silks, a bare ground sinle silk conductor and a control cable core transposition, and three power sinle silks and a control cable core adopt concentric transposition, and the stranding left direction, transposition pitch-diameter ratio are not more than 9, and a bare ground sinle silk conductor is placed in the middle of the cable core. The power wire core comprises a power wire core conductor, a power wire core insulation layer and a tinned copper wire and aramid fiber braided layer; the control cable core is formed by stranding 3 or more than 3 control cable cores, the cabling is in the left direction, the stranding pitch diameter ratio is not more than 8, and a high-strength coating cover layer is extruded; the control wire core comprises a control wire core conductor and a control wire core insulator.

The bare ground wire core conductor and the power wire core conductor are formed by aramid fiber reinforced cores and a plurality of tinned copper wire strands in a regular stranding mode, and the aramid fiber reinforced cores are located in the center of the conductors. The aramid fiber reinforced core is formed by a plurality of aramid fiber bundles. The directions of the aramid fiber reinforced core and the tinned copper wire strand bundle wires are both left, and the pitch diameter ratio of the bundle wires is not more than 20; the outermost layer is twisted leftwards, the adjacent layers are opposite, and the twist pitch-diameter ratio is not more than 14.

The control core conductor is formed by winding an aramid fiber reinforced core and a plurality of layers of tinned copper wires in a layered mode, the outermost layer is wound in the left direction, the adjacent layers are opposite, the pitch diameter ratio of aramid fiber bundles is not more than 20, and the winding pitch diameter ratio of the tinned copper wires is not more than 3. The traditional wire binding structure of the control wire core conductor is changed into layered winding, the wound spiral control wire core conductor basically has no bearing force in the cable bending process, and the tensile force is borne by the high-tensile aramid fiber reinforced core, so that the problem that the control wire core of the cable of the coal mining machine is easy to break by pulling the whole core is solved.

The aramid fiber is fully called as aromatic polyamide fiber, has excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength is 5-6 times of that of a steel wire, the modulus is 2-3 times of that of the steel wire or glass fiber, the toughness is 2 times of that of the steel wire, the weight is only about 1/5 of the steel wire, and the aramid fiber is not decomposed and melted at the temperature of 560 ℃. The cable has good insulativity and ageing resistance, and the tensile property of the cable is ensured, and the flexibility of the cable is not influenced.

Furthermore, a layer of woven scraping adhesive tape without a selvedge is wound outside the power wire core in an insulating mode, the thickness of the woven scraping adhesive tape is about 0.15mm, one surface of the tape is coated with rubber or the like, and the covering rate is not less than 15% during winding. After the braided scraping adhesive tape is wrapped, the lapping parts are bonded together through rubber or the like, and the insulated wire cores are protected from deforming in the cable bending process.

Further, the tinned copper wire and the aramid fiber braided layer are the same in number of ingots and opposite in direction, the coverage rate of the tinned copper wire is not less than 80%, the weaving pitch-diameter ratio is 2-4, the higher weaving coverage rate and the smaller weaving pitch-diameter ratio enable the tinned copper wire and the aramid fiber to tightly wrap the insulated wire core, and the insulated wire core is protected from deformation in the cable bending process.

Furthermore, a layer of silicone oil is coated outside the tinned copper wire and aramid fiber braided layer, so that the friction force between the wire cores when the cable is bent is reduced, and the sliding performance is improved.

Furthermore, a layer of polyester tape is wrapped outside the control wire core in an insulating mode, the thickness of the polyester tape is 0.04mm, the friction force between the wire cores when the cable is bent is reduced, and the sliding performance is improved.

Further, a layer of adhesive tape without selvedges is wrapped outside the control cable core wrapping layer, the thickness is about 0.15mm, one surface of the tape is coated with rubber or the like, and the covering rate is not less than 15% during wrapping.

Furthermore, a layer of silicone oil is coated outside the frictioning belt of the cover layer coated on the control cable core, so that the friction force among the cable cores when the cable is bent is reduced, and the sliding performance is improved.

Further, the sheath is made of high-strength, high-wear-resistance, environment-friendly and flame-retardant polyurethane elastomer, and the strength of the polyurethane elastomer is not less than 20N/mm²And the tearing strength is not less than 40N/mm.

The beneficial effects of the technical scheme are as follows:

1. the bare ground wire core conductor and the power wire core conductor adopt aramid fiber reinforced cores, so that the tensile property of the cable can be greatly improved on the premise of not influencing the bending property of the cable.

2. The wire binding structure of the traditional control wire core conductor is changed into a structure with layered winding outside the aramid fiber reinforced core, the wound spring structure control wire core conductor basically has no bearing force in the cable bending process, and the tensile force is borne by the highly tensile aramid fiber reinforced core, so that the problem that the whole core of the control wire core of the cable of the coal mining machine is easy to break is solved.

3. Through the measures of wrapping and weaving the scratch tape outside the insulating wire core, weaving the aramid fiber with high tensile strength, wrapping the polyester tape outside the insulating wire core, weaving the wire core and coating silicon oil outside the control wire core, the protection wire core is not deformed in the cable bending process, the friction force between the wire cores when the cable is bent is reduced, the sliding performance is improved, and the service life of the cable is greatly prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a reinforced shearer cable according to the present invention.

Wherein: 1-power core, 2-bare ground core conductor, 3-control cable core, 11-power core conductor, 31-control core conductor, 111-power core conductor aramid reinforcement core, 112-power core conductor tinned copper wire strand, 12-power core insulation, 13-braided scratch tape, 14-tinned copper wire and aramid fiber braid, 21-ground core aramid reinforcement core, 22-ground core tinned copper wire strand, 311-control core aramid reinforcement core, 312-control core tinned copper wire, 32-control core insulation, 33-polyester tape, 34-control cable core coating, 35-scratch tape, 4-sheath.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described below with reference to the accompanying drawings.

Embodiment 1, referring to fig. 1, a reinforced coal mining machine cable includes a composite cable core and a sheath 4 coated outside the composite cable core, where the composite cable core is formed by twisting three power wire cores 1, a bare ground wire core conductor 2 and a control cable core 3, the three power wire cores 1 and the control cable core 3 are twisted concentrically, the cabling left direction is provided, the twist pitch ratio is not greater than 9, and the bare ground wire core conductor 2 is placed in the middle of the cable core. The power wire core 1 comprises a power wire core conductor 11, a power wire core insulation 12 and a tinned copper wire and aramid fiber braided layer 14; the control cable core 3 is formed by stranding 3 control cable cores in the left direction, the stranding pitch diameter ratio is not more than 8, and a high-strength coating layer 34 is extruded; the control core includes control core conductor 31 and control core insulation 32, bare ground core conductor 2 is strengthened core 21 and 6 strand tinned copper wire strands 22 by aramid and is formed according to 1+6 normal transposition, and aramid strengthens the core 21 and is located conductor central point and put. The aramid fiber reinforced core 21 is formed by bundling 37 aramid fibers according to a structure of 1+6+12+ 18. Aramid fiber reinforcing core 21 andthe directions of the strands 22 of the tinned copper wires are all left, and the pitch diameter ratio of the strands is not more than 20; the outermost layer is twisted leftwards, the ratio of the twist pitch diameter is not larger than 14, the power line core conductor 11 is formed by regularly twisting aramid fiber reinforced cores 111 and 6 strands of tinned copper wire strands 112 according to 1+6, and the aramid fiber reinforced cores 111 are located at the center of the conductor. The aramid fiber reinforced core 111 is formed by bundling 37 aramid fibers according to a structure of 1+6+12+ 18. The directions of the aramid fiber reinforced core 111 and the tinned copper wire folded yarn 112 are both in the left direction, and the pitch diameter ratio of the folded yarn is not more than 20; the outermost layer is twisted leftwards, the twisting pitch-diameter ratio is not more than 14, the control wire core conductor 31 is formed by winding an aramid fiber reinforced core 311 and 4 layers of tinned copper wires 312 which are positioned in the center in a layered mode, the outermost layer is twisted leftwards, the adjacent layers are opposite, the aramid fiber bundle pitch-diameter ratio is not more than 20, the tinned copper wire winding pitch-diameter ratio is not more than 3, furthermore, a layer of woven edge-free woven scratch tape 13 is wound outside the power wire core insulation 12, the thickness of the woven edge-free woven scratch tape is about 0.15mm, one surface of the tape is coated with rubber or the like, and the lap coverage rate is not less than 15% during lapping. After the braided scraping adhesive tape 13 is wrapped, the lapping parts are bonded together through rubber or the like, the insulated wire cores are protected from deformation in the cable bending process, further, the number of ingots of the tinned copper wire and the number of ingots of the aramid fiber braided layer 14 are the same, the directions of the ingots of the tinned copper wire and the aramid fiber braided layer are opposite, the coverage rate of the tinned copper wire is not less than 80%, the braiding pitch diameter ratio is 2-4, the braiding coverage rate is high, the braided pitch diameter ratio is small, the tinned copper wire and the aramid fiber tightly wrap the insulated wire cores, the insulated wire cores are protected from deformation in the cable bending process, further, a layer of silicone oil is coated outside the tinned copper wire and the aramid fiber braided layer 14, the friction force among the wire cores when the cable is bent is reduced, the sliding performance is improved, a layer of polyester tape 33 is wrapped outside the control wire core insulation 32, the thickness of the polyester tape is 0.04mm, and the friction force among the wire cores when the cable is bent is reduced, improve sliding property, further, control cable core coating 34 is outer to be wrapped the frictioning area 35 that the one deck does not have selvedge, and thickness is about 0.15mm, and one side coating rubber or analog of belt, the cover rate of taking when wrapping is not less than 15%, further, outside the frictioning area 35 of control cable core coating 34, coating one deck silicone oil, the frictional force between the sinle silk when reducing the cable and bending, carryHigh sliding performance, and further, the sheath 4 is made of high-strength, high-wear-resistance, environment-friendly and flame-retardant polyurethane elastomer with the strength not less than 20N/mm²And the tearing strength is not less than 40N/mm.

Embodiment 2, referring to fig. 1, a reinforced coal mining machine cable includes a composite cable core and a sheath 4 coated outside the composite cable core, where the composite cable core is formed by twisting three power wire cores 1, a bare ground wire core conductor 2 and a control cable core 3, the three power wire cores 1 and the control cable core 3 are twisted concentrically, the cabling left direction is a direction, the twist pitch ratio is not greater than 8, and the bare ground wire core conductor 2 is placed in the middle of the cable core. The power wire core 1 comprises a power wire core conductor 11, a power wire core insulation 12 and a tinned copper wire and aramid fiber braided layer 14; the control cable core 3 is formed by stranding 4 control cable cores, the cabling is leftward, the stranding pitch-diameter ratio is not more than 7, and a high-strength coating layer 34 is extruded; the control core includes control core conductor 31 and control core insulation 32, bare ground core conductor 2 is strengthened core 21 and 18 tinned copper wire strands 22 by aramid and is formed according to 1+6+12 normal transposition, and aramid strengthens core 21 and is located conductor central point and put. The aramid fiber reinforced core 21 is formed by bundling 61 aramid fibers according to a structure of 1+6+12+18+ 24. The directions of the aramid fiber reinforced core 21 and the tinned copper wire folded yarn 22 are both in the left direction, and the pitch diameter ratio of the folded yarn is not more than 18; the outermost layer is twisted leftwards, the adjacent layers are opposite, the ratio of the twisting pitch to the twisting pitch is not larger than 12, the power wire core conductor 11 is formed by regularly twisting aramid fiber reinforced cores 111 and 18 strands of tinned copper wire strands 112 according to 1+6+12, and the aramid fiber reinforced cores 111 are located at the center of the conductor. The aramid fiber reinforced core 111 is formed by bundling 61 aramid fibers according to a structure of 1+6+12+18+ 24. The directions of the aramid fiber reinforced core 111 and the tinned copper wire folded yarn 112 are both in the left direction, and the pitch diameter ratio of the folded yarn is not more than 18; the outermost layer is twisted leftwards repeatedly, adjacent layers are opposite, the twisting pitch-diameter ratio of the outermost layer is not more than 12, the control wire core conductor 31 is formed by winding aramid fiber reinforced cores 311 and 5 layers of tinned copper wires 312 which are positioned in the center in a layered mode, the outermost layer is twisted leftwards, the adjacent layers are opposite, the pitch-diameter ratio of aramid fiber bundles is not more than 18, the winding pitch-diameter ratio of the tinned copper wires is not more than 2.5, the power wire core insulation 12 is wrapped with a layer of weaving scraping adhesive tape 13 without woven edges, the thickness of the weaving scraping adhesive tape is about 0.15mm, and one surface of the tape is provided with a plurality of layers of weaving scraping adhesive tapesCoated with rubber or the like, and the lapping rate is not less than 15 percent when the wrapping is carried out. After the braided scraping adhesive tape 13 is wrapped, the lapping parts are bonded together through rubber or the like, the insulated wire cores are protected from deformation in the cable bending process, further, the number of ingots of the tinned copper wire and the number of ingots of the aramid fiber braided layer 14 are the same, the directions of the ingots of the tinned copper wire and the aramid fiber braided layer are opposite, the coverage rate of the tinned copper wire is not less than 80%, the braiding pitch diameter ratio is 2-3, the higher braiding coverage rate and the smaller braiding pitch diameter ratio enable the tinned copper wire and the aramid fiber to tightly wrap the insulated wire cores, the insulated wire cores are protected from deformation in the cable bending process, further, a layer of silicone oil is coated outside the tinned copper wire and the aramid fiber braided layer 14, the friction force among the wire cores when the cable is bent is reduced, the sliding performance is improved, a layer of polyester tape 33 is wrapped outside the control wire core insulation 32, the thickness of the polyester tape is 0.04mm, and the friction force among the wire cores when the cable is bent is reduced, improve sliding property, furtherly control cable core coating 34 is outer around the frictioning area 35 of wrapping the one deck no selvedge, and thickness is about 0.15mm, and rubber or analog is scribbled to one side of belt, takes the lid rate not less than 15% when wrapping, and furtherly is outer in the frictioning area 35 of control cable core coating 34, coats one deck silicon oil, reduces the frictional force between the sinle silk when the cable is crooked, improves sliding property, and further, sheath 4 is high strength, high wear-resisting, environmental protection, flame retardant polyurethane elastomer, and intensity is not less than 25N/mm²And the tearing strength is not less than 40N/mm.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A reinforced coal mining machine cable is characterized by comprising a composite cable core and a sheath (4) coated outside the composite cable core, wherein the composite cable core is formed by twisting three power wire cores (1), a bare ground wire core conductor (2) and a control cable core (3), the three power wire cores (1) and the control cable core (3) are twisted concentrically, the bare ground wire core conductor (2) is placed in the middle of the cable core, and each power wire core (1) comprises a power wire core conductor (11), a power wire core insulator (12) and a tinned copper wire and aramid fiber braided layer (14); the control cable core is formed by stranding 3 or more than 3 control cable cores and is wrapped by a control cable core wrapping layer (34) in an extruding way; the control wire core comprises a control wire core conductor (31) and a control wire core insulation (32).

2. The reinforced shearer cable according to claim 1, wherein the bare ground core conductor (2) and the power core conductor (11) are formed by regularly stranding an aramid reinforced core and a plurality of tinned copper wire strands, the aramid reinforced core (111) is located at the center of the conductor, the aramid reinforced core (111) is formed by a plurality of aramid fiber bundle wires, the aramid reinforced core (111) and the tinned copper wire strands are in the left direction, and the pitch diameter ratio of the bundle wires is not more than 20; the outermost layer is twisted leftwards, the adjacent layers are opposite, and the twist pitch-diameter ratio is not more than 14.

3. The reinforced shearer cable according to claim 1, wherein the control core conductor (31) is formed by winding aramid fiber reinforced core (311) and a plurality of layers of tinned copper wires (312) in a layered mode, the aramid fiber reinforced core is located in the center, the outermost layer of the control core conductor is wound in the left direction, the adjacent layers of the control core conductor are opposite, the pitch-diameter ratio of aramid fiber bundles is not more than 20, and the winding pitch-diameter ratio of the tinned copper wires is not more than 3.

4. A reinforced shearer cable according to claim 1, wherein the power core insulation (12) is wrapped with a braided scratch tape (13) without selvedges, the thickness is about 0.15mm, one side of the tape is coated with rubber, and the lapping rate is not less than 15% when the tape is wrapped.

5. The reinforced shearer cable according to claim 1, wherein the tinned copper wire and the aramid fiber braided layer (14) are the same in number of ingots and opposite in direction, the coverage rate of the tinned copper wire is not less than 80%, and the braiding pitch-diameter ratio is 2-4.

6. The reinforced coal cutter cable according to claim 1, wherein a layer of silicone oil is coated outside the tinned copper wire and aramid fiber braided layer (14), so that the friction force between the wire cores when the cable is bent is reduced, and the sliding performance is improved.

7. The reinforced coal mining machine cable according to claim 1, wherein a polyester tape is wound outside the control wire core insulation, the thickness of the polyester tape is 0.04mm, the friction force between the wire cores when the cable is bent is reduced, and the sliding performance is improved.

8. The reinforced shearer cable according to claim 1, wherein a non-woven edge scraping belt (35) is wound outside the control cable core covering layer (34) and is about 0.15mm thick, one surface of the belt is coated with rubber, and the lapping rate during winding is not less than 15%.

9. The reinforced shearer cable according to claim 1, wherein a layer of silicone oil is coated outside the frictioning belt (35) of the cover layer coated on the control cable core, so that the friction force between the cable cores when the cable is bent is reduced, and the sliding performance is improved.

10. A reinforced shearer cable according to claim 1, wherein the sheath (4) is a high-strength, high-wear-resistant, environment-friendly, flame-retardant polyurethane elastomer with strength not less than 20N/mm²And the tearing strength is not less than 40N/mm.