CN201605480U

CN201605480U - Steel cable for crawler cranes

Info

Publication number: CN201605480U
Application number: CN2009202747485U
Authority: CN
Inventors: 杨岳民; 左士龙; 华正
Original assignee: Jiangsu Safety Wire Rope Co Ltd
Current assignee: Jiangsu Safety Wire Rope Co Ltd
Priority date: 2009-12-17
Filing date: 2009-12-17
Publication date: 2010-10-13
Anticipated expiration: 2019-12-17

Abstract

A steel cable for crawler cranes structurally comprises a center strand, thin sub strands, thick sub-strands and outer strings, wherein the center strand is wrapped and twisted with the thick sub-strands symmetrically, the thin sub-strands are respectively arranged in an outer clearance between each adjacent two thick sub-strands, the outer strands are symmetrically wrapped and twisted on the outmost side of the steel cable, and steel wires of the outer strands are twisted and in surface contact connection. As the outer strand structures are extruded to be in surface contact via a mold, metal effective area of the steel cable is increased, breaking capacity of the steel cable is increased by 22% compared with a 35W*7 steel cable with the same specification and strength, and the steel cable has large contact surface with a winch and a pulley during usage, increases wear resistance and has fine rotation stopping capacity.

Description

The crawler crane steel wire rope

Technical field

The utility model relates to a kind of steel wire rope, specifically is meant the crawler crane steel wire rope.

Background technology

At present, crawler crane is used 6 * 29Fi+IWR, 35W * 7 structure class steel wire ropes more, and these two kinds of steel wire ropes belong to linear contact lay wire rope, also are round-strand ropes, and national standard requires the rupture pull force coefficient of steel wire rope to have only 0.36.Because at present the handling weight of crawler crane is increasing, requires the minimum breaking force of load-bearing wires rope increasing, if select the round-strand rope of said structure for use, then wirerope diameter is too thick, and the design of crawler crane is brought certain difficulty.

The utility model content

In order to solve the problems of the technologies described above, the utility model provides a kind of rupture pull force height, the crawler crane steel wire rope of wear-resisting, anti-extruding.

The technical scheme that solves the problems of the technologies described above is:

The crawler crane steel wire rope, comprise central strand, thin substrand, thick substrand and outer layer strand, described thick substrand wraps symmetrically twists with the fingers described central strand, and described thin substrand is positioned at the external series gap of adjacent two thick substrands, and described outer layer strand is wrapped sth. made by twisting symmetrically in the steel wire rope outermost; Be face contact shape between the steel wire of described outer layer strand and connect, and be twisted together.

Outer employing face contact thigh, substrand and central strand adopt the line contact, make the rupture pull force of rope improve wear-resisting, anti-extruding.

Further be improved to, be line contact shape between the steel wire of described central strand, thin substrand and thick substrand and connect, and be twisted together.

Moreover, the core wire cross section of described outer layer strand is approximate regular hexagon shape, 6 section of steel wire of the skin of described outer layer strand are approximate trapezoid shapes and connect into ring by trapezoidal side edges, the trapezoidal end face of described 6 steel wires is connected with six contacts of described core wire respectively, the trapezoidal bottom of described 6 steel wires towards outside.

Moreover described central strand comprises core wire rope, 18 thick wires and 6 finer wires; 6 described thick wires wrap symmetrically twists with the fingers described core wire, and 6 described finer wires are positioned at the external series gap of adjacent two thick wires, and 12 described thick wires wrap sth. made by twisting symmetrically in the central strand outermost.

Moreover described thick substrand comprises core wire, 10 finer wires, 5 middle finer wires and 10 thick wires; 5 described finer wire bags are twisted with the fingers described core wire, and its outer staggered bag is twisted with the fingers and is provided with 5 middle finer wires and 5 finer wires, and 10 described thick wires wrap sth. made by twisting symmetrically in thick substrand outermost.

Moreover described thin substrand comprises core wire and 6 cover wires; Described 6 cover wires wrap the sth. made by twisting core wire symmetrically.

When the production outer layer strand, carry out the (cold-)drawn (steel)wire rope with mould, change wire shape in the outer layer strand, make the interior steel wire of rope strand be face contact shape, close rope with central strand, thin substrand and thick substrand then.

Because the structure of outer layer strand is face contact shape through the mould extruding, improved steel wire rope metal effective area, 35W * 7 breaking force of rope of contrast same size, intensity have improved 22%, and the contact-making surface with elevator, pulley is big in use, ABRASION RESISTANCE improves, and rotation resistance is better.In use, the steel wire rope of this kind structure has stronger ABRASION RESISTANCE, crush resistance and resistance to shock loads performance, and can improve more than 20% service life.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the cross section structure schematic diagram of the utility model crawler crane with steel wire rope;

Fig. 2 is the central strand cross section structure schematic diagram of the utility model crawler crane with steel wire rope;

Fig. 3 is the thin substrand cross section structure schematic diagram of the utility model crawler crane with steel wire rope;

Fig. 4 is the thick substrand cross section structure schematic diagram of the utility model crawler crane with steel wire rope;

Fig. 5 is the outer layer strand cross section structure schematic diagram of the utility model crawler crane with steel wire rope;

Mark is illustrated as among Fig. 1-5,1 central strand, 2 thin substrands, 3 thick substrands, 4 outer layer strand.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

Embodiment 1

Shown in Fig. 1-5, the crawler crane steel wire rope comprises central strand 1, thin substrand 2, thick substrand 3 and outer layer strand 4, and thin substrand 2 and thick substrand 3 are interspersed and wrap and twist with the fingers central strand 1, and outer layer strand 4 is wrapped symmetrically and twisted with the fingers in the steel wire rope outermost; Steel wire between central strand 1, thin substrand 2 and the thick substrand 3 is line contact shape and connects, and is face contact shape between the steel wire of outer layer strand 1 and connects.

The core wire cross section of outer layer strand 4 is approximate regular hexagon shapes, 6 section of steel wire of the skin of outer layer strand 4 are approximate trapezoid shapes and connect into ring by trapezoidal side edges, the trapezoidal end face of 6 steel wires is connected with six contacts of core wire respectively, the trapezoidal bottom of 6 steel wires towards outside.

Central strand 1 comprises core wire rope, 18 thick wires and 6 finer wires; 6 thick wires wrap the sth. made by twisting core wire symmetrically, and 6 finer wires are positioned at the external series gap of adjacent two thick wires, and 12 thick wires wrap sth. made by twisting symmetrically in central strand 1 outermost.

Thick substrand 3 comprises core wire, 10 finer wires, 5 middle finer wires and 10 thick wires; 5 finer wire bags are twisted with the fingers core wire, and its outer staggered bag is twisted with the fingers and is provided with 5 middle finer wires and 5 finer wires, and 10 thick wires wrap sth. made by twisting symmetrically in thick substrand 3 outermost.

Thin substrand 2 comprises core wire and 6 cover wires; 6 cover wires wrap the sth. made by twisting core wire symmetrically.

Described crawler crane with the preparation method of steel wire rope is:

The making of substrand and central strand 1 has been arranged steel wire by noseplate on sth. made by twisting thigh car, compress through closing up mouth, effectively eliminates the stress of thigh again through post-former, is received in then on the I-beam wheel, gets thin substrand 2, thick substrand 3 and central strand 1.The making of outer layer strand 4 has been arranged steel wire by noseplate twisting with the fingers on strand car, mouthful is compacted to steel wire rope with the wolfram steel mould and is deformed to desired structure through closing up, and the stress of effectively eliminating strand through post-former is received on the I-beam wheel then again, gets outer layer strand 4.Carry out the (cold-)drawn (steel)wire rope with mould, change wire shape in the outer layer strand 4, make the interior steel wire of rope strand be face contact shape.

When closing rope,

substrand

2,3, central strand 1 and outer layer strand 4 are arranged by noseplate on finished car,, compress by closing up mouth again, effectively eliminate the stress of thigh again through post-former, be received on the I-beam wheel then through pre-former.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. crawler crane steel wire rope, it is characterized by: described crawler crane comprises central strand, thin substrand, thick substrand and outer layer strand with steel wire rope, described thick substrand wraps symmetrically twists with the fingers described central strand, described thin substrand is positioned at the external series gap of adjacent two thick substrands, and described outer layer strand is wrapped sth. made by twisting symmetrically in the steel wire rope outermost; Be face contact shape between the steel wire of described outer layer strand and connect, and be twisted together.

2. crawler crane steel wire rope according to claim 1 is characterized in that: be line contact shape between the steel wire of described central strand, thin substrand and thick substrand and connect, and be twisted together.

3. crawler crane steel wire rope according to claim 1, it is characterized in that: the core wire cross section of described outer layer strand is approximate regular hexagon shape, 6 section of steel wire of the skin of described outer layer strand are approximate trapezoid shapes and connect into ring by trapezoidal side edges, the trapezoidal end face of described 6 steel wires is connected with six contacts of described core wire respectively, the trapezoidal bottom of described 6 steel wires towards outside.

4. crawler crane steel wire rope according to claim 1 and 2 is characterized in that: described central strand comprises core wire rope, 18 thick wires and 6 finer wires; 6 described thick wires wrap symmetrically twists with the fingers described core wire, and 6 described finer wires are positioned at the external series gap of adjacent two thick wires, and 12 described thick wires wrap sth. made by twisting symmetrically in the central strand outermost.

5. crawler crane steel wire rope according to claim 1 and 2 is characterized in that: described thick substrand comprises core wire, 10 finer wires, 5 middle finer wires and 10 thick wires; 5 described finer wire bags are twisted with the fingers described core wire, and its outer staggered bag is twisted with the fingers and is provided with 5 middle finer wires and 5 finer wires, and 10 described thick wires wrap sth. made by twisting symmetrically in thick substrand outermost.

6. crawler crane steel wire rope according to claim 1 and 2 is characterized in that: described thin substrand comprises core wire and 6 cover wires; Described 6 cover wires wrap the sth. made by twisting core wire symmetrically.