SU372924A1 - A method of manufacturing plastically crimped wire spiral ropes - Google Patents

Description

one

The invention relates to cable and cable production, such as the manufacture of spiral cables, cable lines, wire armor of electrical cables and cable cores, bimetallic cables of overhead power lines and other similar twisted wire products.

A known method of manufacturing plastically crimped wire spiral ropes is that several layers of wires are wound onto the core, with each subsequent layer being wound in the direction opposite to the direction of winding of the previous layer.

However, with this method, low wear resistance and strength of the resulting ropes.

In order to increase the wear resistance and strength of the ropes in the proposed method, each layer of wires is wound with simultaneous compression, which does not affect the pre-crimped core, and then subjected to re-compression to tight contact with the core.

FIG. Figure 1 shows the tool (longitudinal section) and the rope at the production stage; FIG. 2 is a section along A-A in FIG. one; in fig. 3 is a section along B-B in FIG. one; in fig. 4 is a section along the line BB of FIG. one; pas figs. 5 is a cross section along L-D in FIG. one.

The method of manufacturing plastically crimped wire spiral ropes is as follows. The crimped wire core 1 passes through the center of the distribution pattern provided with a hollow mandrel 2, and the coating wires are gathered together around this mandrel in separable dies 3. The coating layer formed in this way, consisting of one or more layers of wires, in which the wires tightly adjoin one on the other hand, they form a tubular roof 4, pass through the crimping die 5. Under the action of the working surface of the die

Stretching forces and forces opposed to the ladder wire are plastically mutually compressed in the radial and circumferential directions, adopting interchipping shaped profiles.

The ratio of the number and size of the wires, the outer size of the tubular mandrel, the size of the working channel of the nozzle and the diameter of the core of the rope is chosen so that the plastic compression layer

The coating stopped at the moment of its tight contact with the core of the rope, which are a pre-twisted and plastically crimped helical wire element or cylindrical body of an electrical conductor. AT

the result is a plastically crimped helical wire rope 6.

Subject invention

A method of manufacturing plastically crimped wire spiral ropes, consisting in that several layers of wires are wound onto the core, each subsequent layer being wound in the direction opposite to the direction of winding of the previous layer, characterized in that in order to increase the wear resistance and strength of the ropes, each layer The wires are wound with a simultaneous crimping, not touching the pre-crimped core, and then subjected to re-crimping until tight contact with the core.

AT

6-6

5

Рig.2 in-В

14