Protection device for preventing cable from too large anti-tensioning force

Abstract

The invention discloses a protection device for preventing a cable from a too large anti-tensioning force, and relates to the technical field of power transmission cables. The protection device comprises a wire tower, a bidirectional telescopic device and an extension supporting rod. The wire tower is fixedly provided with an extension support rod; the tail end of the extending supporting rod is fixedly connected with the bidirectional telescopic device. Two sides of the cable are respectively wound by the bidirectional telescoping device. The inner surfaces of fixed seats are rotationally matched with the peripheral sides of two ends of a winding column; the two ends of the torsion spring are fixedly connected with the winding column and the fixing base respectively. When the bidirectional telescopic device rotates in one direction, the cable at the two sides of the bidirectional telescopic device extends or retracts at the same time. According to the invention, the bidirectional telescopic device and the extension support rod are used; the bidirectional telescopic device performs bidirectional extension to a certain degree according to the fact that the force borne by the cable is large, the problem that the tensile force borne by the cable in a certain period of time in the swinging state is sharply increased is solved, and the effect of relieving the situation that the cable is broken due to the fact that the tensile force reaches the limit is achieved to a certain degree.

Description

technical field [0001] The invention belongs to the technical field of power transmission cables, and in particular relates to a protection device for preventing excessive tension of cables. Background technique [0002] The current power transmission cables are generally long in length, which results in a large weight load of the power transmission cables, and then requires relatively high strength of the cables. [0003] For example, when the wind speed in extreme weather is very high, the impact on the sway of the cable will make the tension of the transmission cable larger, and it is easy to cause a large damage to the transmission cable in a short time. impact, resulting in the phenomenon of breaking due to excessive tension, and the cable is easily injured when the line is thrown due to the break, and even the serious consequences of the collapse of the tower; all of which will cause property damage. serious loss. [0004] In view of the above-mentioned defects, a pr...

AI Technical Summary

Problems solved by technology

[0002] The current power transmission cables are generally long in length, which leads to a large weight load of the power transmission cables, and then requires relatively high strength of the cables

[0003] For example, when the wind speed in extreme weather is very high, the impact on the sway of the cable will make the tension of the transmission cable larger, and it is easy to cause a large damage to the transmission cable in a short time. impact, resulting in the phenomenon of breaking due to excessive tension, and the cable is easily injured when the line is thrown due to the break, and even the serious consequences of the collapse of the tower; all of which will cause property damage. serious loss

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