CN102912664A

CN102912664A - Steel wire rope and producing method thereof

Info

Publication number: CN102912664A
Application number: CN2012104753078A
Authority: CN
Inventors: 林柱英; 顾巍; 章伟
Original assignee: Jiangsu Safety Wire Rope Co Ltd
Current assignee: Jiangsu Safety Wire Rope Co Ltd
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-02-06

Abstract

The invention discloses a steel wire rope and a producing method thereof. The steel wire rope is prepared by that strands are wrapped on a central strand through twisting, the strands include an inner strand, a secondary inner strand and an outer strand, a surface contact state is formed between steel wires and between strands in the steel wire rope, the twisting directions of the inner strand and the secondary inner strand wrapped on the central strand are leftward, the lay lengths are 5.9-6.2 times as large as the diameter of a central sub rope, the twisting direction of the outer strand wrapped on the central sub rope is rightward, and the lay length is 6.8-7.1 times as large as the diameter of the steel wire rope. By using the matching of the lay lengths and twisting directions of the rope and the strands, the torques of the inner and outer layers of the steel wire rope are mutually offset, thereby improving the rotating resistance of the steel wire rope; and the steel wire rope is subjected to strand extrusion and rope extrusion, so that the bearing capacity and fatigue resistance of the steel wire rope are improved.

Description

A kind of steel wire rope and preparation method thereof

Technical field

The present invention relates to a kind of steel wire rope and manufacture method thereof, refer more particularly to a kind of steel wire rope and manufacture method thereof that high-lift engineering machinery is used that be applicable to.

Background technology

At present, the steel wire rope that high-lift engineering machinery is used is at present with 6 strands contact steel wire rope, multi-strand wire rope is main, such steel wire rope is that bearing capacity or anti-fatigue ability all are difficult to reach the instructions for use under the operating mode complex situations, because lift is high, require just high to the resistance rotation performance of steel wire rope accordingly, domestic have the part compaction-strand steel wire rope to replace above-mentioned steel wire rope, use in engineering machinery, but because the thigh compression ratio of compaction-strand steel wire rope and rope internal stress can not get good solution, the rupture strength of steel wire rope, anti-fatigue performance and resistance rotation performance do not reach instructions for use.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of steel wire rope that meets high-lift engineering machinery use and preparation method thereof.

In order to solve the problems of the technologies described above, the invention provides a kind of steel wire rope, to twist with the fingers the central strand twisting by the thigh bag to form, described strand is internal layer thigh, inferior internal layer thigh and outer layer strand, in the strand wire between steel wire and steel wire, strand with strand between be face and contact shape, internal layer thigh, inferior outer layer strand bag are twisted with the fingers central strand and are twisted with the fingers to being left-hand lay, the lay pitch is the diameter of 5.9-6.2 times of middle center rope, the center rope was twisted with the fingers to being right-laid during the outer layer strand bag was twisted with the fingers, and the lay pitch is 6.8-7.1 times of wirerope diameter.

As a further improvement on the present invention, described strand wire comprises central strand, internal layer thigh, inferior outer layer strand and 1 outer layer strand.

As a further improvement on the present invention, described 1 outer layer strand comprises thick strand and thin strand.

As a further improvement on the present invention, per sharely in the described steel wire rope all twist with the fingers a core wire by the cover wire bag and form.

As a further improvement on the present invention, described central strand, the outer layer strand thigh lay pitch are doubly burst footpath of 6.9-7.1, and internal layer thigh, the inferior outer layer strand thigh lay pitch are doubly burst footpath of 8.9-9.1.

A kind of preparation method of steel wire rope, step is as follows:

1), with steel wire by twisting with the fingers a strand car, push with wire drawing die, compression ratio is selected 8%-10%, makes central strand, internal layer thigh, inferior outer layer strand, outer layer strand by above-mentioned specification requirement.

2), inferior outer layer strand, internal layer thigh bag are twisted with the fingers central strand and make middle center rope by said structure.

3), the outer layer strand bag twisted with the fingers in the center rope make steel wire rope, the steel wire rope of making is through again extruding, compression ratio is selected 6%-8%, makes required steel wire rope.

Adopt said structure and preparation method, its beneficial effect is:

This kind steel cord structure is selected a strand bag to twist with the fingers a central strand twisting and is formed, utilize rope, burst lay pitch and twist with the fingers to coupling, steel wire rope ectonexine moment of torsion is cancelled out each other, improve the resistance rotation performance of steel wire rope, steel wire rope has improved bearing capacity and the anti-fatigue performance of steel wire rope through a burst extruding, rope extruding simultaneously.

Description of drawings

Fig. 1 is construction of wire rope schematic diagram of the present invention.

Among the figure: 1-central strand, 2-internal layer thigh, 3-outer layer strand, 4-outer layer strand.

The specific embodiment

The present invention will be further described in detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of steel wire rope, to twist with the fingers 1 central strand twisting by 3 layers of thigh bag to form, described 3 layers of thigh are internal layer thigh 2, inferior internal layer thigh 3 and outer layer strand 4, in the strand wire between steel wire and steel wire, strand with thigh between be face and contact shape, internal layer thigh 2, inferior outer layer strand 3 bags are twisted with the fingers central strand 1 and are twisted with the fingers to being left-hand lay, and the lay pitch is

5.9-6.2 the diameter of center rope doubly, the center rope was twisted with the fingers to being right-laid during outer layer strand 4 bags were twisted with the fingers, and the lay pitch is 6.8-7.1 times of wirerope diameter.

Described strand wire comprises 1 central strand 1,6 internal layer thighs 2,12 outer layer strand 3 and 16 outer layer strand 4; 12 times outer layer strand 3 comprises 6 thick strand and 6 thin strand; Per sharely in the steel wire rope all twist with the fingers a core wire by 6 cover wire bags and form; Central strand 1,4 bursts of lay pitch of outer layer strand are doubly burst footpath of 6.9-7.1, and

internal layer thigh

2,3 bursts of lay pitch of inferior outer layer strand are doubly burst footpath of 8.9-9.1.

The preparation method of a kind of steel wire rope of the present invention is: first steel wire is passed through to twist with the fingers a strand car, push with wire drawing die, compression ratio is selected 8%-10%, make 1 central strand 1,6 internal layer thighs 2,12 outer layer strand 3,16 outer layer strand 4 by above-mentioned specification requirement, secondly 12 outer layer strand 3,6 internal layer thigh 2 bags are twisted with the fingers 1 central strand 1 and made middle center rope by above-mentioned specification requirement, the center rope is made steel wire rope at last 16 outer layer strand, 4 bags being twisted with the fingers, the steel wire rope of making is through again extruding, compression ratio is selected 6%-8%, makes required steel wire rope.

Only be one embodiment of the present invention below, do not limit protection scope of the present invention.

Claims

1. steel wire rope, to twist with the fingers central strand (1) twisting by the thigh bag to form, described strand is internal layer thigh (2), inferior internal layer thigh (3) and outer layer strand (4), in the strand wire between steel wire and steel wire, strand with thigh between be face and contact shape, it is characterized in that: internal layer thigh (2), inferior outer layer strand (3) bag are twisted with the fingers central strand (1) and are twisted with the fingers to being left-hand lay, the lay pitch is the diameter of the doubly middle center rope of 5.9-6.2, and the center rope was twisted with the fingers to being right-laid during outer layer strand (4) bag was twisted with the fingers, and the lay pitch is 6.8-7.1 times of wirerope diameter.

2. a kind of steel wire rope according to claim 1, it is characterized in that: described strand wire comprises central strand (1), internal layer thigh (2), inferior outer layer strand (3) and outer layer strand (4).

3. a kind of steel wire rope according to claim 1 is characterized in that: described outer layer strand (3) comprises thick strand and thin strand.

4. a kind of steel wire rope according to claim 1 is characterized in that: per sharely in the described steel wire rope all twist with the fingers core wire by the cover wire bag and form.

5. a kind of steel wire rope according to claim 1 is characterized in that: described central strand (1), outer layer strand (a 4) burst lay pitch are doubly burst footpath of 6.9-7.1, and internal layer thigh (2), inferior outer layer strand (a 3) burst lay pitch are doubly burst footpath of 8.9-9.1.

6. the preparation method of a steel wire rope, step is as follows:

1), with steel wire by twisting with the fingers a strand car, push with wire drawing die, compression ratio is selected 8%-10%, makes central strand (1), internal layer thigh (2), inferior outer layer strand (3), outer layer strand (4) by said structure.

2), inferior outer layer strand (3), internal layer thigh (2) bag are twisted with the fingers central strand (1) and make middle center rope by said structure.

3), outer layer strand (4) bag twisted with the fingers in the center rope make steel wire rope, the steel wire rope of making is through again extruding, compression ratio is selected 6%-8%, makes required steel wire rope.