Compacted strand steel wire rope for casting rigging
A technology for steel wire ropes and compacted strands, which is applied in the field of compacted strand steel wire ropes for casting rigging and its preparation, and can solve the problems of small breaking coefficient, low compression ratio of steel wire ropes, and poor lifting balance
Active Publication Date: 2015-05-13
JIANFENG SLING
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Problems solved by technology
Cast steel wire rope slings are one of the most commonly used slings, but the existing steel wire ropes have low compression rate, small breaking coefficient, easy wear, broken wires or broken strands, and easy rotation, resulting in poor lifting balance and cannot fully meet the actual situation. application needs
Method used
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[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples.
[0014] Such as figure 1 As shown, a steel wire rope with compacted strands for casting slings includes 35 compacted strands, specifically 3 layers of twisted central strands 1, 6 inner strands 2, 12 secondary outer strands, and 16 outer strands 4 The inner layer strands 2, the second outer layer thick strands 32, and the outer layer strands 4 have the same diameter, and the diameter of the second outer layer thin strands 31 is 65-70% of the diameter of other strands; The layers of strands are twisted in the opposite direction to the inner two strands. The central strand, the inner strand, and the second outer strand form the central sub-rope of the steel wire rope, and the outer strand and the central sub-rope form the steel wire rope. The lay distance of the central strand is 7 times the strand diameter, the other strands are 9 times the stran...
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Abstract
The invention relates to a compacted strand steel wire rope for a casting rigging; the compacted strand steel wire rope totally comprises 35 strands; the diameters of internal strands, secondary external thick strands and external strands are identical; the diameters of secondary external thin strands are 65-70% of the diameters of the other strands; the internal strands and the secondary external strands are identical in the twisting direction; and the external strands and the two internal strands are opposite in the twisting direction. The central strand, the external strands and the secondary external strands form the central sub-rope of the steel wire rope; and the external strands and the central sub-rope form the steel wire rope. The 7-time strand diameter is used as the twisting length of the central strand, the 9-time strand diameter is used as the twisting lengths of the other strands, and the 6.3-time strand diameter is used as the twisting length of the central sub-rope, and the 7-time strand diameter is used as the twisting length of the steel wire rope. Steel wires for the steel wire rope adopt No. 80 carbon steel of high quality as raw materials; the processing compression ratio of the finished product is 85-90%, and the compression ratio of each strand steel wire rope is 16%. The strength and fracture coefficient of the compacted strand steel wire rope are greatly increased due to the characteristics of the selected material and structure; and the steel wire rope does not rotate in the natural state, thereby avoiding the convenience caused by the rotation of the steel wire rope.
Description
technical field [0001] The invention relates to a steel wire rope and a preparation method thereof, in particular to a compacted-strand steel wire rope for casting slings and a preparation method thereof. Background technique [0002] Rigging is a force-bearing tool tied between the hoisting machinery and the lifted object for the purpose of moving objects, and a force-bearing member for stabilizing the space structure. It is widely used in steel, chemical, transportation, ports and other industries. Cast steel wire rope slings are one of the most commonly used slings, but the existing steel wire ropes have low compression rate, small breaking coefficient, easy wear, broken wires or broken strands, and easy rotation, resulting in poor lifting balance and cannot fully meet the actual situation. application needs. The material and structure of the wire rope itself are important factors that determine its quality. Contents of the invention [0003] In view of this, it is ne...
Claims
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IPC IPC(8): D07B1/10D07B3/00D07B5/00
Inventor 崔志强苏伟良李勇
Owner JIANFENG SLING