Rubber jacketed flexible cable with anti-torsion mark for shuttle car

Abstract

The utility model relates to a rubber jacketed flexible cable with an anti-torsion mark for a shuttle car, which comprises a monitoring wire core arranged in the center, a Y-shaped semi-conductive rubber core extruded outside the monitoring wire core, three power wire cores and three ground wire cores which are sequentially arranged on the outer side of the Y-shaped semi-conductive rubber core in a surrounding manner by taking the Y-shaped semi-conductive rubber core as the center to form a cable wire core, an inner sheath layer, a reinforcing layer and an outer sheath layer are sequentially extruded on the cable core from inside to outside. According to the rubber jacketed flexible cable with the anti-torsion mark for the shuttle car, the mechanical property and the heat resistance of the chloroprene rubber are effectively improved, and the service life of the cable is effectively prolonged; when the cable is bent and deformed, the influence on the monitoring wire core is minimum, and meanwhile, the monitoring wire core is placed in the Y-shaped core to protect the monitoring wire core; the surface of the ethylene-propylene insulating layer is gear-shaped, relative movement of the wire core and the sheath during use is prevented, the torsion-resistant mark is added on the surface of the cable sheath, the use condition of the cable is easy to monitor, and the cable can be safely and effectively protected.

Description

Technical Field

[0001] The utility model relates to a cable, in particular to a rubber-sheathed soft cable with an anti-twist identification for a shuttle vehicle. Background Art

[0002] As the underground tunnel is very narrow, the shuttle cable may be caught by the shaft wall or supporting materials at any time. At the same time, the cable drum capacity and the shuttle car running distance restrict the cable size. During the operation, the cable will be frequently retracted and released on the drum. At the same time, the cable will directly contact the ore and rub against the ground and the wall for a long time. The cable will sometimes be hit by the ore. Therefore, the cable's tensile, bending, compression and torsion resistance, and wear resistance are very high. During the use of the cable, because the cable is round, the cable is sometimes twisted and cannot be identified from the appearance. The cable cannot be replaced in time, causing secondary damage to the equipment. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a rubber-sheathed soft cable for shuttle vehicles with a torsion-resistant marking, which can indicate the cable position, prevent vehicles from running over it, reduce cable damage, and increase the cable life.

[0004] The technical solution adopted by the utility model is:

[0005] A rubber-sheathed soft cable for a torsion-resistant identification shuttle vehicle comprises: a monitoring wire core arranged in the center, a Y-shaped semi-conductive rubber core arranged outside the monitoring wire core; the monitoring wire core is arranged in the center of the Y-shaped semi-conductive rubber core;

[0006] Three power wire cores and three ground wire cores are arranged around the outer side of the Y-shaped semi-conductive rubber core;

[0007] The power line core is a tinned copper conductor with an EPDM insulation layer extruded outside;

[0008] The monitoring wire core is a tinned copper conductor with an EPDM insulation layer extruded outside;

[0009] The core of the ground wire is a conductor with a semi-conductive layer extruded outside;

[0010] A Y-shaped semi-conductive rubber core is extruded outside the monitoring line core, and three power line cores and three ground line cores are arranged around the Y-shaped semi-conductive rubber core in sequence on the outside of the Y-shaped semi-conductive rubber core to form a cable core. The cable core is extruded with an inner sheath layer, a reinforcement layer and an outer sheath layer from the inside to the outside.

[0011] Preferably, the power line core conductor pitch is 12.5 times the theoretical pitch diameter ratio of each layer of twisting.

[0012] The cable conductor is a Category 6 cable conductor.

[0013] Preferably, the ground wire core is a nylon rope + 5-strand bundled wire twisted conductor, and the specification of the nylon rope is 4000D×3; the 5-strand bundled wire twisted conductor ensures that the cable has sufficient tensile strength.

[0014] The theoretical pitch diameter ratio of each layer of the ground wire is ≤9.

[0015] Preferably, the monitoring wire core is a nylon rope + 6-strand bundled wire twisted conductor, and the nylon rope specification is 1000D×3; ensuring that the cable has sufficient tensile strength;

[0016] The monitoring wire core conductor elongation is ≥15%.

[0017] Preferably, the surface of the EPDM insulation layer is in a "gear" shape, which can increase the contact area between the cable core and the sheath to a limited extent; the "gear" height is 0.2 mm, and the number of "gears" is 60.

[0018] Preferably, the Y-shaped semi-conductive rubber core, the inner sheath and the ground wire core sheath are all made of semi-conductive chloroprene rubber.

[0019] To ensure adequate safety of the cable, the volume resistivity of the semi-conductive chloroprene rubber is ≤20Ω·cm, the sheath material hardness is ≥70A, the expansion strength is ≥8.5MPa, and the elongation is ≥200%.

[0020] Preferably, the anti-torsion mark is two strip marks; the anti-torsion mark is 0.6mm high and 3mm wide; the angle between the two marks in the circumferential direction with the cable center as the center is 28°. Fluorescent rubber is used during extrusion to ensure that the cable is easy to identify and observe during night use.

[0021] Preferably, the outer sheath layer is provided with a plurality of sealed cavities, and colored powder is provided in the sealed cavities;

[0022] The outer sheath comprises an outer layer and an inner layer, and a sealed cavity layer is arranged between the outer layer and the inner layer;

[0023] The outer layer thickness is smaller than the inner layer thickness.

[0024] Preferably, a powder layer is provided between the reinforcement layer and the outer jacket layer, and colored powder is provided in the powder layer.

[0025] The beneficial effects of the utility model compared with the prior art are as follows:

[0026] The utility model is a rubber sheathed soft cable for a shuttle car with an anti-twist mark. An anti-twist mark is added to the surface of the cable sheath. The anti-twist mark is two strip marks. Fluorescent rubber is used during extrusion, which is easy to monitor the use status of the cable and safely and effectively protect the cable.

[0027] The utility model has a rubber sheathed soft cable for a torsion-resistant marking shuttle vehicle, and an outer sheath layer is provided with a plurality of sealed cavities, in which colored powder is provided, and the outer sheath comprises an outer layer and an inner layer, a sealed cavity layer is provided between the outer layer and the inner layer, and the thickness of the outer layer is less than the thickness of the inner layer. After the outer layer is provided according to actual needs, when the thickness of the outer layer is very thin, the cable is crushed and the outer layer is damaged, and the colored powder in the sealed cavity is exposed, which warns that the cable has been crushed and that the cable at the crushed position needs special protection.

[0028] The utility model has a rubber sheathed soft cable for a torsion-resistant marking shuttle vehicle, wherein outer sheaths and sealed cavities are alternately arranged; colored powders of different colors are respectively arranged in the first sealed cavity layer and the second sealed cavity layer; when the cable is crushed or otherwise mechanically damaged, the degree of damage to the cable is determined based on the color of the powder leaked from the cable, thereby strengthening the protection of the damaged cable and increasing the service life of the cable.

[0029] The utility model has a rubber-sheathed soft cable for a torsion-resistant identification shuttle and a manufacturing method thereof, improves the performance of the sheath, effectively enhances the mechanical properties and heat resistance of chloroprene rubber, and can effectively increase the service life of the cable; the monitoring core is placed inside the Y-shaped core, and during the use of the cable, since the monitoring core is located in the center of the cable, when the cable is bent and deformed, the monitoring core is minimally affected, and the monitoring core is placed in the Y-shaped core to protect the monitoring core; the surface of the EPDM insulation layer is in a "gear" shape, which can increase the contact area between the cable core and the sheath to a limited extent, and increase the friction between the insulating core and the sheath; prevent the core and the sheath from relative movement during use, and increase the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a first embodiment of a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle;

[0031] Figure 2 It is a schematic structural diagram of a second embodiment of a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle;

[0032] Figure 3 It is a schematic structural diagram of a third embodiment of a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle;

[0033] Figure 4 It is a schematic structural diagram of a fourth embodiment of a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle.

[0034] Description of the main components in the attached drawings:

[0035] In the figure:

[0036] 1. Power line core conductor

[0037] 2. Power line core insulation layer

[0038] 3. Ground wire core conductor

[0039] 4. Ground wire core sheath

[0040] 5. Monitor the core conductor

[0041] 6. Monitor the insulation layer of the wire core

[0042] 7. Y-shaped semi-conductive rubber core

[0043] 8. Inner sheath layer

[0044] 9. Strengthening layer

[0045] 10. Outer sheath layer

[0046] 11. Anti-torsion mark

[0047] 20. Outer sheath layer. DETAILED DESCRIPTION

[0048] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0049] like Figure 1 As shown: the power line core conductor 1 is extruded with a power line core insulation layer 2, the ground line core conductor 3 is extruded with a ground line core sheath 4, the monitoring line core conductor 5 is extruded with a monitoring line core insulation layer 6, and a Y-shaped semi-conductive rubber core 7 is extruded outside the monitoring line core. Three power line cores and three ground line cores are arranged in sequence around the Y-shaped semi-conductive rubber core 7 on the outside of the Y-shaped semi-conductive rubber core 7 with the Y-shaped semi-conductive rubber core as the center, and an inner sheath layer 8 is extruded, a reinforcement layer 9 is woven outside the inner sheath layer 8, and an outer sheath layer 10 is extruded outside the reinforcement layer 9.

[0050] A rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle, comprising: a monitoring wire core 6 arranged in the center, a Y-shaped semi-conductive rubber core 7 arranged outside the monitoring wire core; the monitoring wire core 6 is arranged in the center of the Y-shaped semi-conductive rubber core;

[0051] Three power wire cores and three ground wire cores are arranged around the outer side of the Y-shaped semi-conductive rubber core 7;

[0052] An inner sheath layer, a reinforcement layer and an outer sheath layer are sequentially arranged on the outer sides of the three power wire cores and the three ground wire cores;

[0053] The power line core is a tinned copper conductor with an EPDM insulation layer extruded outside;

[0054] The monitoring wire core is a tinned copper conductor with an EPDM insulation layer extruded outside;

[0055] The core of the ground wire is a conductor with a semi-conductive layer extruded outside;

[0056] A Y-shaped semi-conductive rubber core is extruded outside the monitoring line core, and three power line cores and three ground line cores are arranged around the Y-shaped semi-conductive rubber core in sequence on the outside of the Y-shaped semi-conductive rubber core to form a cable core. The cable core is extruded with an inner sheath layer, a reinforcement layer and an outer sheath layer from the inside to the outside.

[0057] Preferably, the power line core conductor pitch is 12.5 times the theoretical pitch diameter ratio of each layer of twisting.

[0058] The cable conductor is a Category 6 cable conductor.

[0059] Preferably, the ground wire core conductor structure is nylon rope + 5-strand bundled wire twisted conductor, and the specification of the nylon rope is 4000D×3; the 5-strand bundled wire twisted conductor ensures that the cable has sufficient tensile strength.

[0060] The theoretical pitch diameter ratio of each layer of the ground wire is ≤9.

[0061] Preferably, the monitoring core conductor structure is a nylon rope + 6 strands of twisted conductor, and the nylon rope specification is 1000D×3; ensuring that the cable has sufficient tensile strength;

[0062] The monitoring wire core conductor elongation is ≥15%.

[0063] Preferably, the surface of the EPDM insulation layer is in a "gear" shape, which can increase the contact area between the cable core and the sheath to a limited extent; the "gear" height is 0.2 mm, and the number of gears is 60.

[0064] Preferably, the Y-shaped semi-conductive rubber core, the inner sheath and the ground wire core sheath are all made of semi-conductive chloroprene rubber.

[0065] To ensure adequate safety of the cable, the volume resistivity of the semi-conductive chloroprene rubber is ≤20Ω·cm, the sheath material hardness is ≥70A, the expansion strength is ≥8.5MPa, and the elongation is ≥200%.

[0066] Preferably, the outer sheath layer is provided with an anti-torsion mark 11, which is two strip marks; fluorescent rubber is used during extrusion to ensure that the cable is easy to identify and observe during night use.

[0067] The height of the anti-torsion mark is 0.6mm and the width is 3mm; the angle between the two marks in the circumferential direction with the cable center as the center is 28°.

[0068] like Figure 2 In the second embodiment, a powder layer 12 is provided between the reinforcement layer and the outer jacket layer, and colored powder is provided in the powder layer.

[0069] like Figure 3 , the third embodiment, the outer sheath layer is provided with a plurality of sealed cavities, and colored powder is provided in the sealed cavities;

[0070] The outer sheath layer includes an outer layer 103 and an inner layer 101, and a sealed cavity layer 102 is provided between the outer layer and the inner layer;

[0071] The outer layer thickness is smaller than the inner layer thickness.

[0072] like Figure 4 , the fourth embodiment, a rubber sheathed flexible cable for a torsion-resistant marking shuttle vehicle, the outer sheath layer 20 includes, from the outside to the inside, a first outer sheath layer 201, a first sealed cavity layer 202, a second outer sheath layer 203, a second sealed cavity layer 204 and a third outer sheath layer 205. The outer sheath layer and the sealed cavity are arranged alternately; the first sealed cavity layer 202 and the second sealed cavity layer 204 are respectively provided with colored powders of different colors.

[0073] A method for manufacturing a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle,

[0074] The monitoring wire core 6 is arranged in the center, and a Y-shaped semi-conductive rubber core 7 is extruded from the outer side of the monitoring wire core 6 through a Y-shaped die;

[0075] Three power cores and three ground cores are arranged around the Y-shaped semi-conductive rubber core in sequence on the outside of the Y-shaped semi-conductive rubber core to form a cable core. The cable core is sequentially extruded with an inner sheath layer, a reinforcement layer and an outer sheath layer from the inside to the outside;

[0076] The Y-shaped semi-conductive rubber core is vulcanized by vulcanization tank, and the vulcanization time is 0.35MPa, 60min;

[0077] When the Y-shaped rubber core is cabled, the Y-shaped rubber core and the main line core rotate synchronously;

[0078] The outer sheath layer is provided with an anti-torsion mark 11, which is two strip marks; fluorescent rubber is used during extrusion.

[0079] A method for manufacturing a rubber-sheathed flexible cable for a torsion-resistant identification shuttle vehicle, wherein the material ratio of the sheath layer is:

[0080] Neoprene: 50 parts;

[0081] Stearic acid: 0.3 parts;

[0082] Calcined clay: 30 parts;

[0083] Low molecular weight polyethylene: 5 parts;

[0084] Paraffin: 2.0 parts;

[0085] Antiaging agent DDA: 1.0 part;

[0086] Magnesium oxide: 2.0 parts;

[0087] Carbon black N550: 7.5 parts;

[0088] Zinc oxide: 2.5 parts;

[0089] Accelerator-DM: 0.5 parts;

[0090] Accelerator-NA-22: 0.3 parts.

[0091] The utility model is a rubber sheathed soft cable for a shuttle car with an anti-twist mark. An anti-twist mark is added to the surface of the cable sheath. The anti-twist mark is two strip marks. Fluorescent rubber is used during extrusion, which is easy to monitor the use status of the cable and safely and effectively protect the cable.

[0092] The utility model has a rubber sheathed soft cable for a torsion-resistant marking shuttle vehicle, and an outer sheath layer is provided with a plurality of sealed cavities, in which colored powder is provided, and the outer sheath comprises an outer layer and an inner layer, a sealed cavity layer is provided between the outer layer and the inner layer, and the thickness of the outer layer is less than the thickness of the inner layer. After the outer layer is provided according to actual needs, when the thickness of the outer layer is very thin, the cable is crushed and the outer layer is damaged, and the colored powder in the sealed cavity is exposed, which warns that the cable has been crushed and that the cable at the crushed position needs special protection.

[0093] The utility model has a rubber sheathed soft cable for a torsion-resistant marking shuttle vehicle, wherein outer sheaths and sealed cavities are alternately arranged; colored powders of different colors are respectively arranged in the first sealed cavity layer and the second sealed cavity layer; when the cable is crushed or otherwise mechanically damaged, the degree of damage to the cable is determined based on the color of the powder leaked from the cable, thereby strengthening the protection of the damaged cable and increasing the service life of the cable.

[0094] The utility model has a rubber-sheathed soft cable for a torsion-resistant identification shuttle and a manufacturing method thereof, improves the performance of the sheath, effectively enhances the mechanical properties and heat resistance of chloroprene rubber, and can effectively increase the service life of the cable; the monitoring core is placed inside the Y-shaped core, and during the use of the cable, since the monitoring core is located in the center of the cable, when the cable is bent and deformed, the monitoring core is minimally affected, and the monitoring core is placed in the Y-shaped core to protect the monitoring core; the surface of the EPDM insulation layer is in a "gear" shape, which can increase the contact area between the cable core and the sheath to a limited extent, and increase the friction between the insulating core and the sheath; prevent the core and the sheath from relative movement during use, and increase the service life of the cable.

[0095] The utility model has a torsion-resistant rubber sheathed soft cable for shuttle cars. The sheath material is an improved chloroprene material. By improving the material ratio and introducing new materials, the sheath hardness of the sheath material is effectively improved to ≥80A, the anti-expansion strength is ≥18MPa, and the elongation is ≥500% while ensuring the original mechanical properties. At the same time, the heat aging resistance of the material is effectively improved from 80°C to 90°C.

[0096] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model are within the scope of the technical solution of the utility model.

Claims

1. A rubber-sheathed flexible cable for a torsion-resistant shuttle vehicle, characterized in that: include: A monitoring wire core is arranged in the center, and a Y-shaped semi-conductive rubber core is arranged outside the monitoring wire core; Three power wire cores and three ground wire cores are arranged around the outer side of the Y-shaped semi-conductive rubber core; The power line core is a tinned copper conductor with an EPDM insulation layer extruded outside; The monitoring wire core is a tinned copper conductor with an EPDM insulation layer extruded outside; The core of the ground wire is a conductor with a semi-conductive layer extruded outside; A Y-shaped semi-conductive rubber core is extruded outside the monitoring line core, and three power line cores and three ground line cores are arranged in sequence around the Y-shaped semi-conductive rubber core on the outside of the Y-shaped semi-conductive rubber core to form a cable core. The cable core is sequentially extruded with an inner sheath layer, a reinforcement layer and an outer sheath layer from the inside to the outside; an anti-torsion mark is provided on the outer surface of the outer sheath layer.

2. The rubber-sheathed flexible cable for shuttle vehicles with torsion-resistant marking according to claim 1 is characterized in that: The power line core conductor pitch is 12.5 times the theoretical pitch diameter ratio of each layer of twisting.

3. The rubber-sheathed flexible cable for shuttle vehicles with torsion-resistant marking according to claim 1 is characterized in that: The ground wire core is a nylon rope + 5-strand stranded conductor, and the nylon rope specification is 4000D×3; The theoretical pitch diameter ratio of each layer of the ground wire is ≤9.

4. The rubber-sheathed flexible cable for shuttle vehicles with torsion-resistant marking according to claim 1 is characterized in that: The monitoring wire core is a nylon rope + 6-strand stranded conductor, and the nylon rope specification is 1000D×3; Monitor the elongation of the core conductor to be ≥15%.

5. The rubber-sheathed flexible cable for shuttle vehicles with torsion-resistant marking according to claim 1 is characterized in that: The surface of the EPDM insulation layer is in the shape of a "gear", the height of the "gear" is 0.2 mm, and the number of "gears" is 60; The Y-shaped semi-conductive rubber core, the inner sheath and the ground wire core sheath are all made of semi-conductive chloroprene rubber.

6. The rubber-sheathed flexible cable for shuttle vehicles with torsion-resistant marking according to claim 1 is characterized in that: The anti-torsion mark is two strip marks; the height of the anti-torsion mark is 0.6mm and the width is 3mm; the angle between the two marks in the circumferential direction with the cable center as the center is 28°.

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