CN210692133U

CN210692133U - Bending-resistant core-breaking-resistant towline cable

Info

Publication number: CN210692133U
Application number: CN201921888722.XU
Authority: CN
Inventors: 黄建卫; 江平; 高旭皓; 王成旺; 王毅; 王登峰
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-05
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a resistant crooked core tow chain cable of preventing breaking, including a plurality of insulation core and a tensile inner core, insulation core with the tensile inner core is central circumference around arranging to constitute the cable core for at least one deck and common concentric transposition, the cable core outside has set gradually fluororesin around band, double-deck polyethylene water-blocking layer, copper and has moulded compound area around covering shielding layer, copper line shielding winding layer, inner sheath, heat-resisting layer and oversheath, insulation core includes inner conductor and cladding the outside fluororesin insulating layer of inner conductor, the inner conductor constitutes compound stranded conductor for the concentric transposition of a plurality of strands, the strand constitutes for the concentric transposition of a plurality of tin-plated copper monofilament and a plurality of aramid filaments, the strand to with the strand direction of compound stranded conductor is opposite, compound stranded conductor's strand to with the cable core transposition is opposite. The towline cable has excellent bending resistance, and effectively prevents the frequent problem of broken core and the cracking phenomenon of the sheath.

Description

Bending-resistant core-breaking-resistant towline cable

Technical Field

The utility model relates to a tow chain cable technical field especially relates to a core tow chain cable is prevented absolutely in resistant bending.

Background

In order to prevent the cable from being wound, abraded, pulled off, hung from a hook and scattered, the cable is often put into a cable drag chain to protect the cable, the cable can move back and forth with the drag chain to prevent the cable from being wound, abraded and pulled off, the cable is connected and loosened up and down under the condition that the equipment unit needs to move back and forth, and the special cable with high flexibility moves back and forth with the drag chain and is not easy to abrade, so that the special cable is called as a drag chain cable. The towline cable is widely applied to industrial electronic systems, automatic power generation lines, robots, fire-fighting systems, cranes, numerical control systems, metallurgical industry and the like. For example, in the equipment industries such as hoisting equipment, cranes, grab buckets and the like, common cables cannot meet the use requirements, the service life of the common cables is short after the common cables are repeatedly wound on a drag chain, and the common cables are normally used for about 3 months, so that the wire core is broken or the sheath is cracked.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a crooked disconnected core tow chain cable of preventing, has excellent resistant flexibility to effectively prevent disconnected core problem and sheath fracture phenomenon often.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

Resistant crooked anti-broken core tow chain cable, including a plurality of insulation core and a tensile inner core, insulation core with tensile inner core is central circumference around arranging to constitute the cable core for at least one deck and together concentric transposition, the cable core outside has set gradually fluororesin around band, double-deck polyethylene water-blocking layer, copper and moulds the compound area around covering shielding layer, copper line shielding winding layer, inner sheath, heat-resistant layer and oversheath, insulation core includes inner conductor and cladding the outside fluororesin insulating layer of inner conductor, inner conductor is a plurality of strands and twists with one heart and constitute compound stranded wire, the strand comprises a plurality of tin-plated copper monofilament and a plurality of aramid fiber silk with one heart, the hank direction of strand with the hank direction of compound stranded wire is opposite, the hank direction of compound stranded wire with the cable core hank direction is opposite.

Preferably, a resin-filled core material is filled in a space between the cable core and the fluororesin wrapping tape.

Preferably, the resin-filled core material is an EVA-filled core material or a PP-filled core material.

Preferably, the double-layer polyethylene water-blocking layer is formed by co-extruding an MDPE water-blocking inner layer at the inner side and an LDPE water-blocking outer layer at the outer side.

Preferably, the copper-plastic composite tape wrapping shielding layer is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape is composed of a copper foil tape and an EEA reinforcing filling layer which is thermally integrated with the inner side surface of the copper foil tape.

Preferably, the copper wire shielding winding layer is formed by spirally winding and weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in opposite directions.

Preferably, the copper wire shielding winding layer is of a copper wire woven fabric wrapping structure, and the copper wire woven fabric is a tinned copper wire longitudinally woven on a polyester fiber plain-woven base fabric.

Preferably, the copper wire shielding winding layer is of a structure formed by parallel winding of copper wire woven cloth and nylon cloth, and the copper wire woven cloth is a tinned copper wire longitudinally woven on polyester fiber plain woven base cloth.

Preferably, the inner sheath and the outer sheath are both chloroprene rubber sheaths, and the heat-resistant layer is made of chlorinated polyethylene.

Preferably, the tensile core comprises a nylon rope, and a fluororesin coating layer is arranged outside the nylon rope.

The utility model has the advantages that:

1. in the formation of the plied yarn of the inner conductor, the aramid fiber yarn and the tinned copper monofilament with high strength are added for concentric stranding, so that the tensile strength is greatly improved, and meanwhile, the tensile inner core is filled in during cabling, so that the tensile breaking force is improved in multiples, and the phenomenon of frequent core breakage is effectively avoided.

2. The twisted direction of the compound twisted wire is opposite to that of the compound twisted wire, and the twisted direction of the compound twisted wire is opposite to that of the cable core, so that the torsional stress of the tin-plated copper monofilament forming the compound twisted wire can be reduced, the monofilament deformation is inhibited, the stability of the compound twisted wire is improved, and the bending resistance and the deflection resistance of the cable are improved.

3. The cable is externally provided with a three-layer bonding body of a chloroprene rubber inner sheath, a chlorinated polyethylene heat-resistant layer and a chloroprene rubber outer sheath which have high toughness, high strength and high wear resistance, the mechanical strength is high, the sheath cracking phenomenon is effectively reduced, and the chlorinated polyethylene heat-resistant layer is added between the chloroprene rubber inner sheath and the chloroprene rubber outer sheath, so that the bonding performance is favorably improved, and the heat resistance is increased.

4. The copper wire shielding winding layer is beneficial to ensuring the flexibility of the cable and improving the anti-drag performance.

5. Adopt double-deck polyethylene water-blocking layer, for MDPE inner layer and LDPE outer double-deck coextrusion molding structure that blocks water, the outer layer thickness proportion of optimal design, even under the obvious higher operating mode condition of humidity, the water-blocking layer still can effectually prevent inside the moisture invasion, the insulating electrical properties of protection cable, increase of service life. 6. Through configuration optimization design, the copper-plastic composite belt is formed by winding the copper-plastic composite belt around the winding shielding layer, and the copper-plastic composite belt comprises a copper foil belt and an EEA reinforcing filling layer, so that the shielding layer is not prone to fracture, the reliability of cable use is improved, gaps are adopted for winding, and the manufacturing cost is reduced.

7. Copper line shielding winding layer is copper line woven cloth and nylon cloth duplex winding structure, when saving the copper line quantity and reducing the cost of manufacture, ensures that copper line shielding winding layer and copper mould compound area around package shielding layer good contact, and then guarantees effectual shielding performance. The copper wire shielding winding layer adopts a structure that polyester fiber copper foil wires and tinned copper monofilaments are in reverse spiral winding mutually, so that the flexibility and the flexing resistance are better, and a good electromagnetic shielding effect is achieved.

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.

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a dual-layer polyethylene water-blocking layer according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a copper-plastic composite tape according to an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of a tensile core in accordance with an embodiment of the present application.

Reference numerals: 1-insulating wire core, 2-tensile inner core, 21-nylon rope, 22-fluororesin coating layer, 3-fluororesin wrapping tape, 4-double-layer polyethylene water-resistant layer, 41-MDPE water-resistant inner layer, 42-LDPE water-resistant outer layer, 5-copper-plastic composite tape wrapping shielding layer, 6-copper wire shielding winding layer, 7-inner sheath, 8-heat-resistant layer, 9-outer sheath, 10-inner conductor, 11-fluororesin insulating layer, 12-resin filled core material, 13-copper foil tape and 14-EEA reinforcing filling layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses resistant crooked core tow chain cable of preventing cutting off, including a plurality of insulation core 1 and a tensile inner core 2, insulation core 1 with tensile inner core 2 is central circumference around arranging to constitute the cable core for at least one deck and common concentric transposition, and it is three-layer insulation core 1 to show in the figure. In one embodiment, as shown in fig. 4, the tensile core 2 includes a nylon cord 21 and a fluororesin coating layer 22 is provided on the outside of the nylon cord 21. The insulated wire core 1 comprises an inner conductor 10 and a fluororesin insulating layer 11 coated outside the inner conductor 10, the inner conductor 10 is a compound stranded wire formed by concentrically stranding a plurality of stranded wires, the stranded wires are formed by concentrically stranding a plurality of tin-plated copper monofilaments and a plurality of aramid fibers, the stranding direction of the stranded wires is opposite to that of the compound stranded wire, and the stranding direction of the compound stranded wire is opposite to that of the cable core.

The cable core is characterized in that a fluororesin wrapping tape 3, a double-layer polyethylene water-blocking layer 4, a copper-plastic composite tape wrapping shielding layer 5, a copper wire shielding winding layer 6, an inner sheath 7, a heat-resistant layer 8 and an outer sheath 9 are sequentially arranged outside the cable core, and further, a resin filling core material 12 is filled in a space between the cable core and the fluororesin wrapping tape 3, for example, the resin filling core material 12 is an EVA filling core material or a PP filling core material.

As shown in fig. 2, the double polyethylene water-blocking layer 4 is formed by co-extruding an inner MDPE water-blocking layer 41 on the inner side and an outer LDPE water-blocking layer 42 on the outer side.

As shown in fig. 3, the copper-plastic composite tape lapping shielding layer 5 is a copper-plastic composite tape gap lapping structure, and the copper-plastic composite tape is composed of a copper foil tape 13 and an EEA reinforcing filling layer 14 thermally integrated with the inner side surface of the copper foil tape 13.

Specifically, in one embodiment, the copper wire shielding winding layer 6 may be formed by weaving polyester fiber copper foil filaments and tin-plated copper filaments in a reverse spiral winding manner. In another embodiment, the copper wire shielding and winding layer 6 is a copper wire woven fabric wrapping structure, and the copper wire woven fabric is a polyester fiber plain woven base fabric on which tinned copper wires are longitudinally woven. In still another embodiment, the copper wire shielding winding layer 6 is a parallel winding structure of a copper wire woven fabric and a nylon fabric, and the copper wire woven fabric is a polyester fiber plain woven base fabric on which tinned copper wires are longitudinally woven.

In one embodiment, the inner sheath 7 and the outer sheath 9 are both neoprene sheaths, and the heat resistant layer 8 is a chlorinated polyethylene material.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Resistant crooked core tow chain cable of preventing breaking, characterized by: comprises a plurality of insulated wire cores (1) and a tensile inner core (2), wherein the insulated wire cores (1) are circumferentially arranged in at least one layer by taking the tensile inner core (2) as a center and are concentrically twisted together to form a cable core, the outer part of the cable core is sequentially provided with a fluororesin wrapping tape (3), a double-layer polyethylene water-resistant layer (4), a copper-plastic composite tape wrapping shielding layer (5), a copper wire shielding winding layer (6), an inner sheath (7), a heat-resistant layer (8) and an outer sheath (9), the insulated wire core (1) comprises an inner conductor (10) and a fluororesin insulating layer (11) coated outside the inner conductor (10), the inner conductor (10) is a compound stranded wire formed by concentrically twisting a plurality of stranded wires, the stranded wires are formed by concentrically twisting a plurality of tin-plated copper monofilaments and a plurality of aramid filaments, the twisting direction of the stranded wires is opposite to that of the compound stranded wires, and the twisting direction of the compound stranded wires is opposite to that of the cable cores.

2. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: and a resin filling core material (12) is filled in a space between the cable core and the fluororesin wrapping tape (3).

3. The bend resistant break-resistant towline cable of claim 2, wherein: the resin filling core material (12) is an EVA filling core material or a PP filling core material.

4. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: the double-layer polyethylene water-resistant layer (4) is formed by co-extrusion of an MDPE water-resistant inner layer (41) on the inner side and an LDPE water-resistant outer layer (42) on the outer side.

5. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: the copper-plastic composite tape wrapping shielding layer (5) is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape is composed of a copper foil tape (13) and an EEA reinforcing filling layer (14) which is thermally integrated with the inner side surface of the copper foil tape (13).

6. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: the copper wire shielding winding layer (6) is formed by weaving polyester fiber copper foil wires and tin-plated copper monofilaments in a reverse spiral winding mode.

7. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: the copper wire shielding and winding layer (6) is of a copper wire woven fabric wrapping structure, and the copper wire woven fabric is a tinned copper wire longitudinally woven on a polyester fiber plain woven base fabric.

8. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: copper line shielding winding layer (6) are copper line woven cloth and nylon cloth duplex winding structure, copper line woven cloth has vertically woven the tinned copper wire for polyester fiber plain weave base cloth is last.

9. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: the inner sheath (7) and the outer sheath (9) are both chloroprene rubber sheaths, and the heat-resistant layer (8) is made of chlorinated polyethylene.

10. The bend-resistant core-breaking-resistant towline cable of claim 1, wherein: tensile inner core (2) including nylon rope (21) and the outside of nylon rope (21) is provided with fluororesin coating (22).