Double-twisting technology of steel wire rope

Abstract

The invention discloses a double-twisting technology of a steel wire rope. The technology comprises an external over-twist mechanism arranged in the front of a feeding end of a stranding mechanism of the steel wire rope; the over-twist mechanism comprises a front end hollow shaft and a rear end hollow shaft which are arranged on the same axis; a coaxial rotary drum or rocking basket is connected between the front end hollow shaft and the rear end hollow shaft; the rotary drum or rocking basket is internally provided with a guide wheel; the guide wheel is articulated with the rotary drum or rocking basket by a rotating shaft; the axis of the guide wheel is vertical to that of the front end hollow shaft and intersects with that of the front end hollow shaft; the front end hollow shaft or the rear end hollow shaft is connected with a first driving shaft by a transmission mechanism; in the stranding mechanism, the rotary drum or the rotating shaft arranged at the end is connected with a second driving shaft by a transmission mechanism; the rotating speed ration between the second driving shaft and the first driving shaft is 1: 2. According to the double-twisting technology of the steel wire rope, the external over-twist mechanism is mainly added at the front end of a double-twisting mechanism, and the rotating speed of the external over-twist mechanism is two times higher than the axial rotating speed of the steel wire rope of the double-twisting mechanism by controlling the rotating speed of the external over-twist mechanism along the axial direction of the steel wire rope.

Description

technical field [0001] The invention relates to a processing method of a steel wire rope, in particular to a double-twisting process of the steel wire rope. Background technique [0002] The existing steel wire rope is made by twisting a plurality of steel wires on a single stranding machine. The stranding machine is generally divided into a pay-off part, a split-line mold closing part, and a host twisted-strand take-up part. Arrangement structure, and then reach the main machine through the closed mold, and twist the strands and take up the wire through the rotation of the main machine cradle. [0003] At present, each monofilament in the pay-off part needs a separate rotating pay-off space. It is equipped with a cradle frame and a flywheel between the left and right spindles. The I-shaped wheel, when the number of monofilaments is large, requires multiple cradles, the structure is complex, and the floor space is large; the pay-off part of the stranding machine needs to be...

AI Technical Summary

Problems solved by technology

When the structure of the wire rope needs to be replaced, the two ends of the guide rail must be disassembled from the bracket, and then the screws on the base of the wire rope must be loosened to replace it, which requires a lot of work.

In addition, after the steel wire on the pay-off I-shaped wheel passes through the sub-distributor to the closed die, it is directly over-twisted or enters the main machine, which is likely to cause uneven twisting of the steel wire rope, and inappropriate twisting between monofilaments and strands. Overlapped together, that is, the back wire phenomenon, which affects the quality of the steel cord

[0005] In addition to the above, due to the structure of the pay-off part and the split-line mold closing part, the existing stranding machine can only adapt to the twisting of steel cords with a specific structure. When the structure of the steel cord changes, the components of the stranding machine Unable to flexibly change accordingly, only to re-customize the new stranding machine, resulting in huge investment costs

[0006] The existing double-twisted steel wire rope is twisted separately on two twisting machines. Since the steel wire has a certain elongation in the two-twisting process, the steel wire core wrapped in the center has no winding expansion and contraction. During the twisting process, it is easy to cause problems such as being squeezed, bulged or twisted in the middle

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