CN102021851A

CN102021851A - Point-contact steel wire rope

Info

Publication number: CN102021851A
Application number: CN2010105514179A
Authority: CN
Inventors: 顾伟; 黄海兵
Original assignee: JIANGSU TAILI STEEL ROPES CO Ltd
Current assignee: JIANGSU TAILI STEEL ROPES CO Ltd
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2011-04-20

Abstract

The invention discloses a point-contact steel wire rope. The point-contact steel wire rope comprises a steel core, an inner layer strand, a middle layer strand and an outer layer strand, wherein the steel wire diameter of the outer layer strand is less than that of the inner layer strand and that of the middle layer strand; and uniform clearances are formed between the steel wires of the outer layer strand. As the steel wire diameter of the outer layer strand of the point-contact steel wire rope provided by the invention is less than that the inner layer strand and that of the middle layer strand, the uniform clearances can be formed between the steel wires, the frictions between the steel wires are reduced and the service life of the steel wire rope can be increased.

Description

A kind of point-contact lay wire rope

Technical field

The present invention relates to a kind of steel wire rope, relate in particular to a kind of point-contact lay wire rope.

Background technology

Steel wire is one of plate, pipe, type, silk four big kinds of steel, is through the cold drawn reprocessing product made from gren rod.Steel wire is by section configuration classification, mainly contains circle, side, square, triangle, ellipse, flat, trapezoidal, zigzag etc.; By size classes, have special thin＜0.1 millimeter, thinner 0.1 ~ 0.5 millimeter, thin 0.5 ~ 1.5 millimeter, medium 1.5 ~ 3.0 millimeters, thick 3.0 ~ 6.0 millimeters, thicker 6.0 ~ 8.0 millimeters, extraordinarily thick〉8.0 millimeters; Press the contact form classification, a bit contact contacts with line.

The adjacent layer steel wire is the steel wire rope of dotted state contact in the rope strand, also is non-parallel twist composite steel rope.Referring to Fig. 1, point-contact lay wire rope comprises steel core 1 and multilayer rope strand.Fig. 2 is the point-contact lay wire rope of 6x37 specification, the multilayer rope strand comprises internal layer rope strand 2, intermediate layer rope strand 3 and outer layer strands 4, the rope strand of this steel wire rope (except the core wire) all forms with the steel wire twisting of same specification, and the spiral angle of each layer steel wire equates but the lay pitch does not wait.The difference that the interior steel wire of rope strand is concentric arrangement, adjacent layer steel wire number is 6.The method of twisting has right ordinary lay, left ordinary lay, right lang lay, left twist-on-twist (seeing steel wire rope sth. made by twisting method).

Point-contact lay wire rope is soft, makes also simply, but serviceability is not so good as linear contact lay wire rope, more less than facial-contracted wire rope.Easily produce slippage during use in the rope between the steel wire, be subjected to external force to make to produce simultaneously on the time spent steel wire two kinds of form bending stresses, the primary bending stress that is produced when promptly steel wire is by pulley or reel and because interlayer steel wire mutual extrusion produces second order buckling stress.What is more, when steel wire floats owing to loosely organized generation, also can produce bending stress three times.So the bending stress of steel wire rope is big in use, fatigue durability is poor.The rope strand structure of point-contact lay wire rope is looser, and it is bigger to slide between the steel wire of stressed back, extends greatlyyer, and bulkfactor is less.Though can bear bigger load than linear contact lay wire rope, the life-span is lower.Therefore be necessary improvement contact construction of wire rope, reduce the friction between the steel wire, increase service life.

Summary of the invention

Technical problem to be solved by this invention provides a kind of point-contact lay wire rope, reduces the friction between the steel wire, increases service life.

The present invention solves the problems of the technologies described above the technical scheme that adopts to provide a kind of point-contact lay wire rope, comprise steel core, internal layer rope strand, intermediate layer rope strand and outer layer strands, wherein, the steel wire diameter of described outer layer strands forms uniform space less than the steel wire diameter of internal layer rope strand, intermediate layer rope strand between the steel wire of described outer layer strands.

Above-mentioned point-contact lay wire rope, wherein, the steel wire diameter of described outer layer strands is thinner by 2% than the steel wire diameter of internal layer rope strand, intermediate layer rope strand.

Above-mentioned point-contact lay wire rope, wherein, described steel wire rope is 6x37, and described steel core diameter is 1.05mm, and the steel wire diameter of described internal layer rope strand and intermediate layer rope strand is 0.92mm, and the steel wire diameter of described outer layer strands is 0.90mm.

Above-mentioned point-contact lay wire rope, wherein, the Steel Wire Surface of described internal layer rope strand, intermediate layer rope strand coating oil layer.

The present invention contrasts prior art following beneficial effect: point-contact lay wire rope provided by the invention, the steel wire diameter of the steel wire diameter of outer layer strands less than internal layer rope strand, intermediate layer rope strand is set, make and form uniform space between the steel wire of outer layer strands, thereby the friction between the minimizing steel wire increases service life.

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Description of drawings

Fig. 1 is existing point-contact lay wire rope structural representation;

The cutaway view that Fig. 2 amplifies for existing point-contact lay wire rope;

The cutaway view that Fig. 3 amplifies for point-contact lay wire rope of the present invention.

Among the figure:

1 steel core, 2 internal layer rope strands, 3 intermediate layer rope strands

4 outer layer strands

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples.

See also Fig. 3, point-contact lay wire rope provided by the invention comprises steel core 1, internal layer rope strand 2, intermediate layer rope strand 3 and outer layer strands 4, wherein, the steel wire diameter of described outer layer strands 4 is thinner than the steel wire diameter of internal layer rope strand, intermediate layer rope strand, forms uniform space between the steel wire of described outer layer strands 4.

Point-contact lay wire rope provided by the invention, the steel wire diameter of described outer layer strands 4 is thinner by 2% than the steel wire diameter of internal layer rope strand, intermediate layer rope strand.With 6x37 steel wire rope commonly used is example, and described steel core 1 diameter is 1.05mm, and the steel wire diameter of described internal layer rope strand 2 and intermediate layer rope strand 3 is 0.92mm, and the steel wire diameter of described outer layer strands 4 is 0.90mm.In order further to reduce friction the Steel Wire Surface coating oil layer of described internal layer rope strand 2, intermediate layer rope strand 3.

Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.

Claims

1. point-contact lay wire rope, comprise steel core (1), internal layer rope strand (2), intermediate layer rope strand (3) and outer layer strands (4), it is characterized in that, the steel wire diameter of described outer layer strands (4) forms uniform space less than the steel wire diameter of internal layer rope strand, intermediate layer rope strand between the steel wire of described outer layer strands (4).

2. point-contact lay wire rope as claimed in claim 1 is characterized in that, the steel wire diameter of described outer layer strands (4) is thinner by 2% than the steel wire diameter of internal layer rope strand, intermediate layer rope strand.

3. point-contact lay wire rope as claimed in claim 2, it is characterized in that described steel wire rope is 6x37, described steel core (1) diameter is 1.05mm, the steel wire diameter of described internal layer rope strand (2) and intermediate layer rope strand (3) is 0.92mm, and the steel wire diameter of described outer layer strands (4) is 0.90mm.

4. as each described point-contact lay wire rope of claim 1～3, it is characterized in that the Steel Wire Surface coating oil layer of described internal layer rope strand (2), intermediate layer rope strand (3).