Cable threading device

Abstract

The invention provides a cable threading device. The cable threading device comprises a hard penetrating rod and a cylindrical extrusion buffer part, wherein the hard penetrating rod can penetrate into a fireproof sealing material; a fixing hole for a cable to be laid to penetrate is formed in the tail end of the hard penetrating rod; the cylindrical extrusion buffer part is used for fixing the cable in the fixing hole, is arranged in the fixing hole and is in contact with the hole wall of the fixing hole; the inner hole diameter of the cylindrical extrusion buffer part is smaller than the outer diameter of the cable. The cable is directly driven to penetrate the fireproof sealing material together through the hard penetrating rod, the condition that the cable cannot penetrate caused by the shrinkage of the fireproof sealing material can be avoided, the cable is convenient to penetrate, and the cable can penetrate after once puncturing of the hard penetrating rod, so that the wok efficiency of laying the cable later is improved.

Description

technical field [0001] The present invention relates to the technical field of power systems, and more specifically, to a cable threading device. Background technique [0002] In substations, secondary cables, optical fibers, and cables for broadband applications mostly need to penetrate walls or floors (above the second floor) when laying. In order to ensure safety, fireproof sealing materials (commonly known as red mud ) to seal the damaged wall hole or floor hole. [0003] When laying additional cables in the later stage, one of the main methods currently used is to remove all the red mud, and then re-block the red mud after penetrating the cables. The operation is cumbersome and labor-intensive. Another way is to use a metal drill pipe to puncture the red mud to make a hole in the red mud, and then penetrate the newly added cable through the hole. However, because the red mud has better elasticity, the metal drill pipe The pierced hole is more likely to shrink, which i...

AI Technical Summary

Problems solved by technology

[0003] When laying additional cables in the later stage, one of the main methods currently used is to remove all the red mud, and then re-block the red mud after penetrating the cables. The operation is cumbersome and labor-intensive

Another way is to use a metal drill pipe to puncture the red mud to make a hole in the red mud, and then penetrate the newly added cable through the hole. However, because the red mud has better elasticity, the metal drill pipe The pierced hole is more likely to shrink, which is not easy to penetrate the cable, and may even cause the cable to fail to be laid. At this time, it will need to be punctured again, which affects the work efficiency of the later cable laying

[0004] In addition, the above-mentioned metal drill pipes are more likely to cause damage to the cables originally laid in the red mud during the puncture process, which affects the safety of the cables laid later.

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