CN209962739U

CN209962739U - Hoisting cable

Info

Publication number: CN209962739U
Application number: CN201920956998.0U
Authority: CN
Inventors: 张润浩; 黄伟立; 李金堂; 刘焕新
Original assignee: Zhejiang Wanma Co Ltd
Current assignee: Zhejiang Wanma Co Ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-01-17
Anticipated expiration: 2029-06-24

Abstract

A hoisting cable comprises four conductors, wherein the conductors are directly wrapped in a cross-linked polyethylene insulating layer, the conductors wrapped in the cross-linked polyethylene insulating layer are wrapped in a wrapping tape together, the wrapping tape is wrapped in an inner sheath, the inner sheath is wrapped in a steel tape armor layer, and the steel tape armor layer is wrapped in an outer sheath. The cable further comprises a tensile wire layer, and the outer surface of the tensile wire layer is contacted with the outer surface of the crosslinked polyethylene insulating layer outside each conductor. The tensile cord layer is a fiber composite reinforced tensile layer, or the tensile cord layer is a combination of a steel wire rope and a sheath layer, the steel wire rope is wrapped in the sheath layer, and the thickness of the outer sheath is 1.3 times that of the inner sheath. The utility model discloses in, the surface on tensile cord layer and the outer surface of each conductor crosslinked polyethylene insulating layer touch and link together, compact structure, tensile cord layer location is high-efficient, accurate, therefore manufacturing is easy, weight is also lighter relatively, is difficult to receive damage, long service life simultaneously.

Description

Hoisting cable

Technical Field

The utility model relates to a hoist and mount cable that is arranged in middle and high-rise building, rated voltage 0.6/1 kV.

Background

With the strong increase of national economy in China, the speed of basic construction such as real estate development and the like is accelerated, and the power cable serving as a power supply and distribution main line in various buildings and facilities is a historical necessity. Therefore, units such as construction units, design units, construction and the like seek more advanced and economic power supply and distribution construction technology and method with more excellent performance, smaller occupied effective space and shorter construction period, and the hoisting cable is a common method.

Patent documents No. 201220113258.9, No. CN 202473355U, entitled "a hoisting cable" disclose a hoisting cable: the cable comprises a cable core formed by twisting a plurality of insulated wire cores, a wrapping tape and an outer protective layer which are sequentially wrapped outside the cable core, and a fan-shaped filling layer arranged between the cable core and the wrapping tape; the fan-shaped filling layer is arranged on the outer side of the fan-shaped filling layer. "the utility model discloses a compound reinforcing tensile layer of fibre that adopts the compound core of fibre to constitute replaces the steel wire armor, and the intensity of used compound core is far above the intensity of steel wire, and the proportion has 1/4 of steel wire only, just so can the body weight of greatly reduced cable, has improved the tensile strength of whole cable. Although claim 2 of this patent is: the fiber composite reinforced tensile layer can be formed by twisting single or multiple fiber composite cores, and the diameter of the single fiber composite core is 2-12 mm; the diameter of the fiber composite reinforced tensile layer (5) formed by twisting a plurality of fiber composite cores is 4.5 mm-20 mm, and the number of the fiber composite cores can be 1-37. The patent claims and specifications do not specify the specific number of the fiber composite reinforced tensile layers, but it is obvious that the number of the fiber composite reinforced tensile layers is three and the fiber composite reinforced tensile layers are distributed in a regular triangle according to the description of the drawings in the specification, which increases the specific gravity of the hoisting cable, increases the hoisting difficulty and the wiring difficulty of the hoisting cable, and makes the other three fiber composite reinforced tensile layers distributed in a regular triangle have certain difficulty.

Disclosure of Invention

The main purpose of the present invention is to provide a pre-branching cable with low specific gravity, small hoisting difficulty and low processing and manufacturing difficulty.

The utility model discloses used technical scheme is: the hoisting cable comprises at least three conductors, wherein each conductor is directly wrapped in a cross-linked polyethylene insulating layer, the conductors wrapped in the cross-linked polyethylene insulating layers are wrapped in a wrapping tape together, the wrapping tape is wrapped in an inner sheath, the inner sheath is wrapped in a steel tape armor layer, and the steel tape armor layer is wrapped in an outer sheath. The cable further comprises a tensile wire layer, and the outer surface of the tensile wire layer is contacted with the outer surface of the crosslinked polyethylene insulating layer outside each conductor. The tensile wire layer is a fiber composite reinforced tensile layer, or the tensile wire layer is a combination of a steel wire rope and a sheath layer, and the steel wire rope is wrapped in the sheath layer.

Preferably, the inner sheath is a polyethylene sheath, a polyolefin sheath, a polyvinyl chloride sheath, a chlorosulfonated polyethylene sheath or a polytetrafluoroethylene sheath.

Preferably, the outer sheath is a polyethylene sheath, a polyolefin sheath, a polyvinyl chloride sheath, a chlorosulfonated polyethylene sheath or a polytetrafluoroethylene sheath.

Preferably, the inner sheath and the outer sheath are made of the same material.

Preferably, the thickness of the outer sheath is 1.3 times or more than 1.3 times the thickness of the inner sheath. Usually, the thickness difference between the inner sheath and the outer sheath is almost the same, and the thickness of the outer sheath in the preferred scheme is more than or equal to 1.3 times of that of the inner sheath, so that the hoisting cable is not easy to damage, and the service life of the hoisting cable is prolonged.

The utility model discloses in, the surface on tensile cord layer and the outer surface of each conductor crosslinked polyethylene insulating layer touch and link together, compact structure, tensile cord layer location is high-efficient, accurate, therefore manufacturing is easy, weight is also lighter relatively, is difficult to receive damage, long service life simultaneously. Because the existence on tensile line layer has improved the tensile property of hoist and mount cable, the accessible directly drags hoist and mount cable during line construction and lays, has improved the efficiency of construction greatly and the cable is difficult to damage.

Drawings

FIG. 1: the structure of the utility model is schematically shown.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a four conductors 1, every conductor 1 all directly wraps up in crosslinked polyethylene insulating layer 2, and the conductor 1 of parcel in crosslinked polyethylene insulating layer 2 is wrapped up in band 3 together, and in sheath 5 including band 3 parcel, inner sheath 5 parcel is in steel band armor 6, and steel band armor 6 parcel is in outer sheath 7. The cable also comprises a tensile wire layer 4, wherein the outer surface of the tensile wire layer 4 is contacted with the outer surface of the crosslinked polyethylene insulating layer 2 outside each conductor 1; the tensile wire layer 4 is a fiber composite reinforced tensile layer, and the steel wire rope is wrapped in the sheath layer. Wherein, inner sheath 5 and oversheath 7 are one in polyethylene sheath, polyolefin sheath, polyvinyl chloride sheath, chlorosulfonated polyethylene sheath or the polytetrafluoroethylene sheath, and the material of inside and outside sheath is unanimous best, this embodiment inner sheath 5 and oversheath 7 are the polyethylene sheath, and the thickness of oversheath is 1.3 times of inner sheath thickness.

The above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes made in the shape, structure and design objectives of the present invention should be considered within the scope of the present invention, i.e. all equivalent changes should be protected by the present invention.

Claims

1. The utility model provides a hoist and mount cable, includes three piece at least conductors (1), every conductor (1) all directly wraps up in crosslinked polyethylene insulating layer (2), and conductor (1) of parcel in crosslinked polyethylene insulating layer (2) are wrapped up in band (3) together, and in sheath (5) including band (3) parcel, inner sheath (5) parcel is in steel band armor (6), and steel band armor (6) parcel is in outer sheath (7), characterized by: the cable is characterized by also comprising a tensile wire layer (4), wherein the outer surface of the tensile wire layer (4) is contacted and connected with the outer surface of the crosslinked polyethylene insulating layer (2) outside each conductor (1); the tensile cord layer (4) is a fiber composite reinforced tensile cord layer, or the tensile cord layer (4) is a combination of a steel wire rope and a sheath layer, and the steel wire rope is wrapped in the sheath layer.

2. A hoisting cable according to claim 1, wherein: the inner sheath (5) is a polyethylene sheath, a polyolefin sheath, a polyvinyl chloride sheath, a chlorosulfonated polyethylene sheath or a polytetrafluoroethylene sheath.

3. A hoisting cable according to claim 1, wherein: the outer sheath (7) is a polyethylene sheath, a polyolefin sheath, a polyvinyl chloride sheath, a chlorosulfonated polyethylene sheath or a polytetrafluoroethylene sheath.

4. A hoisting cable according to claim 1, wherein: the inner sheath (5) and the outer sheath (7) are made of the same material.

5. A hoisting cable according to claim 1, wherein: the thickness of the outer sheath is 1.3 times or more than 1.3 times of the thickness of the inner sheath.