CN202744868U

CN202744868U - Parallel twisting structured wire rope

Info

Publication number: CN202744868U
Application number: CN 201220290655
Authority: CN
Inventors: 谭志平; 石家伦; 李伟
Original assignee: Guizhou Steel Rope Co Ltd
Current assignee: Guizhou Steel Rope Co Ltd
Priority date: 2012-06-20
Filing date: 2012-06-20
Publication date: 2013-02-20
Anticipated expiration: 2022-06-20

Abstract

The utility model discloses a parallel twisting structured wire rope which is formed by entwisting at least two layers of stranded ropes around a rope core once. The parallel twisting structured wire rope is a linear contact structure; the strands in the wire rope are in linear contact with each other and have big contact area and small contact stress; and the wires in the wire ropes are also in linear contact with each other and have big contact area and small contact stress. Second bending of the wires during the use of the wire rope is avoided, and the parallel twisting structured wire rope has big breaking force and long service life.

Description

A kind of parallel twisting structure steel wire rope

Technical field

The utility model relates to a kind of parallel twisting structure steel wire rope, belongs to the metallic article technical field.

Background technology

Steel wire rope is normally formed around a center wire rope core twisting by one deck strand at least, center wire rope core outer layer strand is the twisting of carrying out by in layer, be a contact condition between thigh and the thigh, contact not tight, strand with the thigh contact area little, compact stress is large, there is second order buckling in while steel wire rope in use steel wire, these are so that the rupture pull force of steel wire rope is little, and fatigue performance is poor, have reduced the service life of steel wire rope.

The utility model content

The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of parallel twisting structure steel wire rope to be provided, a kind of parallel twisting structure steel wire rope, and it is made of around a wire rope core primary twisting the two-layer at least strand of ground floor strand and second layer strand.

Described parallel twisting structure steel wire rope is comprised of at least 17 strands, be that line contact structures twisting consists of between ground floor strand and second layer strand thigh and the thigh, be the line contact condition in the steel wire rope between each strand, steel cord structure is 17Fi or 19W or 19S or 21Fi or 25Fi or 26WS.

The ground floor strand of described parallel twisting structure steel wire rope and each strand in the second layer strand consist of for once being twisted the line contact structures, are the line contact condition between each steel wire in strand, and the strand structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.

The wire rope core of described parallel twisting structure steel wire rope is metal thigh core, and structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.

The beneficial effects of the utility model:

1. each strand is line contact condition between steel wire and the steel wire for line contact parallel twisting structure in strand in the steel wire rope, contact closely between steel wire and the steel wire, and compact stress is little.

In the steel wire rope each layer thigh with strand between be wire and contact, strand large with the contact area of thigh, compact stress is little, the while steel wire rope has in use been avoided the second order buckling of steel wire, has increased substantially the fatigue life of steel wire rope.

3. be the line contact condition between strand wire and the thigh, outer layer strand is entrenched between the lonely slit of steel wire rope internal layer fully, the diameter of steel wire rope internal layer thigh is larger than common metal core core thigh diameter like this, and it is larger that the rupture pull force of steel wire rope and common metal independent wire strand core wire rope are compared increase rate.

4. each layer of steel wire rope thigh is the while twisting, is the line contact condition between thigh and the thigh in the steel wire rope, and the internal layer thigh is identical with the lay pitch of outer layer strand, and the relative sliding ratio of thigh in steel wire rope is easier to, and steel wire rope has preferably flexibility and ABRASION RESISTANCE.

Description of drawings

Fig. 1 is the utility model parallel twisting structure steel wire rope cross section structure schematic diagram.

Among the figure: 1-wire rope core, 2-ground floor strand, 3-second layer strand.

The specific embodiment

Below in conjunction with accompanying drawing the utility model parallel twisting structure steel wire rope is described in further detail:

Among the figure, it is made of around wire rope core 1 primary twisting the two-layer at least strand of ground floor strand 2 and second layer strand 3.

Described parallel twisting structure steel wire rope is comprised of at least 17 strands, be that line contact structures twisting consists of between 3 strands of ground floor strand 2 and second layer strands and the thigh, be the line contact condition in the steel wire rope between each strand, steel cord structure is 17Fi or 19W or 19S or 21Fi or 25Fi or 26WS.

The ground floor strand 2 of described parallel twisting structure steel wire rope and each strand in the second layer strand 3 consist of for once being twisted the line contact structures, are the line contact condition between each steel wire in strand, and the strand structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.

The wire rope core 1 of described parallel twisting structure steel wire rope is metal thigh core, and structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.

Each strand is line contact parallel twisting structure in the utility model steel wire rope, adopts primary twisting to form, and is the line contact condition between steel wire and the steel wire in strand, contact closely between steel wire and the steel wire, and compact stress is little.

Two-layer strand of the outer minimum twisting of the utility model wire rope core, center wire rope core and wire rope core silent partners adopt the primary twisting moulding, each layer thigh with strand between be wire and contact, compare with the steel wire rope of common metal cored structure, have long-pending, the higher breaking force of rope of larger cross section metal and long service life.

In the described steel wire rope each layer thigh with strand between, silk with thread between be wire and contact, contact area between thigh and strand, thread and the silk is large, compact stress is little, and steel wire rope has in use been avoided the second order buckling of steel wire simultaneously, has increased substantially rupture pull force and the service life of steel wire rope.

Claims

1. parallel twisting structure steel wire rope is characterized in that: it is made of around a wire rope core (1) primary twisting the two-layer at least strand of ground floor strand (2) and second layer strand (3).

2. a kind of parallel twisting structure steel wire rope according to claim 1, it is characterized in that: described parallel twisting structure steel wire rope is comprised of at least 17 strands, be that line contact structures twisting consists of between ground floor strand (2) and second layer strand (3) thigh and the thigh, be the line contact condition in the steel wire rope between each strand, steel cord structure is 17Fi or 19W or 19S or 21Fi or 25Fi or 26WS.

3. a kind of parallel twisting structure steel wire rope according to claim 1 and 2, it is characterized in that: the ground floor strand (2) of described parallel twisting structure steel wire rope and each strand in the second layer strand (3) consist of for once being twisted the line contact structures, be the line contact condition between each steel wire in strand, the strand structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.

4. a kind of parallel twisting structure steel wire rope according to claim 1, it is characterized in that: the wire rope core (1) of described parallel twisting structure steel wire rope is metal thigh core, and structure is 19W or 19S or 21Fi or 25Fi or 26WS or 31WS or 36WS.