A vehicle trolley cable and power supply system

Abstract

The utility model relates to a vehicle trolley cable and power supply system, including a cable core, a braided layer, a wrapping layer and a sheath layer; the cable core includes an insulating wire and a filling piece, a plurality of insulating wires are provided, and the plurality of insulating wires are twisted outside the filling piece to form a cable core, and the insulating wires each include a plurality of conductors extruded with an insulating layer, and the plurality of conductors are twisted into an insulating wire core, and a metal tape is wrapped around the insulating wire core; the braided layer is wrapped outside the cable core; the wrapping layer is wrapped outside the braided layer; and the sheath layer is wrapped outside the wrapping layer. The trolley cable of the utility model is provided with a center piece and insulating wires symmetrically arranged around the center piece to form a cable core with a uniform structure, so that during the movement of the cable, the cable core can maintain the stability of the overall structure, and each insulating wire will not shift to the center position to cause a single insulating wire to be subjected to excessive force, resulting in the breakage of the insulating wire and the entire cable; and a braided layer and a flexible bending-resistant sheath are provided to further enhance the strength and bending resistance of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a vehicle tractor cable and a power supply system. Background Art

[0002] The trolley cable is a special purpose flexible cable, suitable for port machinery, cranes, cranes, etc. that are dragged and moved at high altitudes. It can also be used for power supply of other types of mobile equipment, such as open-air operations and underground mining. Due to the particularity of the laying and use sites, the cable will be frequently dragged, rolled, stretched and folded, and the tensile and torsional forces it bears change all the time. In addition, most lifting and handling machinery are operated in the open air. The trolley cable is subjected to wind, sun, rain and humid weather for a long time, and will also be hit, bumped, scraped, and worn by foreign objects, and the working environment is harsh.

[0003] The existing vehicle trolley cables cannot meet the requirements for tensile and bending resistance when they are sufficiently flexible. During long-term use, the core wires are prone to breakage, which affects the normal and stable operation of the power supply system. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem that the vehicle trolley cable in the prior art cannot meet the requirements for its tensile and bending resistance when it has sufficient flexibility, and the core wire is prone to breakage during long-term use, affecting the normal and stable operation of the power supply system.

[0005] In order to solve the above technical problems, the utility model provides a vehicle trolley cable, comprising:

[0006] A cable core, wherein the cable core comprises an insulating wire and a filling piece, wherein a plurality of insulating wires are provided, wherein the plurality of insulating wires are twisted outside the filling piece to form the cable core, wherein each of the insulating wires comprises a plurality of conductors extruded with an insulating layer, wherein the plurality of conductors are twisted into an insulating wire core, and a metal tape is wrapped around the insulating wire core;

[0007] A braided layer, the braided layer is coated on the outside of the cable core;

[0008] A wrapping layer, the wrapping layer is wrapped around the braided layer;

[0009] A sheath layer is coated on the outside of the wrapping layer.

[0010] In an embodiment of the present invention, the braided layer is woven from a plurality of tinned annealed soft copper wires.

[0011] In one embodiment of the present invention, a drain wire is provided between the insulating core of each of the insulating wires and the metal tape.

[0012] In one embodiment of the present invention, the filling piece includes a center piece made of polyester yarn and a polyvinyl chloride layer covering the center piece.

[0013] In an embodiment of the present invention, the insulating layer is a thermoplastic elastomer insulating layer.

[0014] In one embodiment of the present invention, the sheath layer is made of modified high-strength polyurethane material.

[0015] In one embodiment of the present invention, the metal tape is an aluminum foil tape.

[0016] In one embodiment of the present invention, the conductor comprises a plurality of oxygen-free bare soft copper wires twisted together.

[0017] In an embodiment of the present invention, eight groups of the insulating wires are provided, and each of the insulating wires includes three conductors.

[0018] A power supply system comprises the vehicle trolley cable as described in any one of the above items.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a vehicle trolley cable and power supply system, including a cable core, a braided layer, a wrapping layer and a sheath layer; the cable core includes an insulating wire and a filling piece, a plurality of insulating wires are provided, and the plurality of insulating wires are twisted outside the filling piece to form a cable core, and the insulating wires each include a plurality of conductors extruded with an insulating layer, and the plurality of conductors are twisted into an insulating wire core, and a metal tape is wrapped around the insulating wire core; the braided layer is wrapped outside the cable core; the wrapping layer is wrapped outside the braided layer; and the sheath layer is wrapped outside the wrapping layer. The utility model trolley cable is provided with a center piece and insulating wires symmetrically arranged around the center piece to form a cable core with a uniform structure, so that during the movement of the cable, the cable core can maintain the stability of the overall structure, and each insulating wire will not shift to the center position to cause a single insulating wire to be subjected to excessive force, resulting in the breakage of the insulating wire and the entire cable; and a braided layer and a flexible bending-resistant sheath are provided to further enhance the strength and bending resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0022] Figure 1 It is a schematic diagram of the overall structure of the vehicle trolley cable of the preferred embodiment of the utility model;

[0023] Figure 2It is a structural schematic diagram of the cable core of the vehicle trolley cable in the preferred embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a filling piece of a vehicle trolley cable in a preferred embodiment of the utility model;

[0025] Figure 4 It is a schematic structural diagram of the insulating wire of the vehicle trolley cable according to the preferred embodiment of the utility model.

[0026] Explanation of the reference numerals in the specification: 1. cable core; 11. insulated wire; 111. insulating layer; 112. conductor; 113. metal tape; 114. drain wire; 12. filling piece; 121. center piece; 122. polyvinyl chloride layer; 2. braided layer; 3. sheathing layer; 4. sheathing layer. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Embodiment 1

[0029] Reference Figure 1-Figure 4 As shown, a vehicle trolley cable of the utility model comprises:

[0030] A cable core 1, the cable core 1 comprises an insulating wire 11 and a filler 12, a plurality of insulating wires 11 are provided, the plurality of insulating wires 11 are twisted outside the filler 12 to form the cable core 1, the insulating wires 11 each comprise a plurality of conductors 112 extruded with an insulating layer 111, the plurality of conductors 112 are twisted into an insulating wire core, and a metal tape 113 is wrapped around the insulating wire core;

[0031] A braided layer 2, wherein the braided layer 2 is coated on the cable core 1;

[0032] The wrapping layer 3 is wrapped around the braided layer 2;

[0033] The sheath layer 4 is coated on the outside of the wrapping layer 3 .

[0034] Specifically, eight groups of insulating wires 11 can be arranged, and the eight groups of insulating wires 11 are evenly arranged around the central filling piece 12. Adjacent insulating wires 11 are in close contact with each other and twisted outside the filling piece 12 to form a cable core 1 with uniform structure. Such a structure can ensure that each group of insulating wires 11 is subjected to uniform force, and during the movement of the cable, the cable core can maintain the stability of the overall structure. Each insulating wire will not shift to the center position, causing a single insulating wire to be subjected to excessive force, resulting in the breakage of the insulating wire and the entire cable, which is beneficial to improving the tensile strength and bending resistance of the cable, reducing the possibility of cable breakage during use, and ensuring the safe and stable operation of the transmission line.

[0035] Furthermore, the braided layer 2 is braided from a plurality of tinned annealed soft copper wires. Specifically, the metal wires are braided with a reasonable pitch and uniformly coated on the cable core 1; the braided layer 2 can not only improve the strength and bending resistance of the entire cable, but also improve the anti-interference ability of the cable, which is conducive to preventing the influence of external electromagnetic interference on the cable signal transmission and ensuring the stable operation of the cable.

[0036] Furthermore, a drain wire 114 is provided between the insulating core of each insulating wire 11 and the metal tape 113 .

[0037] Furthermore, the filling member 12 includes a center member 121 made of polyester yarn and a polyvinyl chloride layer 122 covering the center member 121 .

[0038] Furthermore, the insulating layer 111 is a thermoplastic elastomer insulating layer 111. Specifically, the use of the thermoplastic elastomer insulating layer 111 can ensure the softness and elasticity of each insulating wire 11 and the entire cable, so that the cable can meet the bending resistance requirement.

[0039] Furthermore, the sheath layer 4 is made of modified high-strength polyurethane material. The modified high-strength polyurethane material has excellent strength and environmental resistance, and has the characteristics of high wear resistance, tear resistance, low temperature resistance, waterproofness, oil resistance, flexibility and bending resistance, UV resistance, and resistance to weak acids and alkalis. It can protect the internal structure of the cable in a variety of harsh usage environments, thereby ensuring that the cable can operate normally and stably in a variety of different environments.

[0040] Furthermore, the metal tape 113 is an aluminum foil tape, which can improve the anti-interference ability of the cable.

[0041] Furthermore, the conductor 112 comprises a plurality of strands of oxygen-free bare soft copper wires twisted together, wherein the single wire meets the requirements of the AS / NZS1125 standard Category 6 conductor and has a lay length of 12 times its diameter. The strands are first bundled and then twisted into an insulated core, and a thermoplastic elastomer insulation layer 111 is extruded outside the insulated core.

[0042] Furthermore, eight groups of insulating wires 11 are provided, and each insulating wire 11 includes three conductors 112 .

[0043] Embodiment 2

[0044] The utility model also discloses a power supply system, which comprises the vehicle trolley cable of the first embodiment.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A vehicle trolley cable, characterized in that: include: A cable core, wherein the cable core comprises an insulating wire and a filling piece, wherein a plurality of insulating wires are provided, wherein the plurality of insulating wires are twisted outside the filling piece to form the cable core, wherein each of the insulating wires comprises a plurality of conductors extruded with an insulating layer, wherein the plurality of conductors are twisted into an insulating wire core, and a metal tape is wrapped around the insulating wire core; A braided layer, the braided layer is coated on the outside of the cable core; A wrapping layer, the wrapping layer is wrapped around the braided layer; A sheath layer is coated on the outside of the wrapping layer.

2. The vehicle trolley cable according to claim 1, characterized in that: The braided layer is formed by weaving a plurality of tinned annealed soft copper wires.

3. The vehicle trolley cable according to claim 1, characterized in that: A drain wire is arranged between the insulating wire core and the metal tape of each insulating wire.

4. The vehicle trolley cable according to claim 1, characterized in that: The filling piece includes a center piece made of polyester yarn and a polyvinyl chloride layer covering the center piece.

5. The vehicle trolley cable according to claim 1, characterized in that: The insulating layer is a thermoplastic elastomer insulating layer.

6. The vehicle trolley cable according to claim 1, characterized in that: The sheath layer is made of modified high-strength polyurethane material.

7. The vehicle towing cable according to claim 1, characterized in that: The metal tape is an aluminum foil tape.

8. The vehicle towing cable according to claim 1, characterized in that: The conductor comprises a plurality of oxygen-free bare soft copper wires twisted together.

9. The vehicle trolley cable according to claim 1, characterized in that: The insulating wires are arranged in eight groups, and each of the insulating wires includes three conductors.

10. A power supply system, characterized in that: The invention comprises a vehicle towing cable as claimed in any one of claims 1 to 9.

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