Incoming cable restraining device on box-type transformer

Abstract

The invention discloses an incoming cable restraining support on a box-type transformer. The box-type transformer comprises a box body on the box-type transformer, wherein a wire inlet hole is formedin the bottom of the side wall of the box body; an external thread bushing is screwed in the wire inlet hole of the box body; a flange is formed at the inner end of the external thread bushing; the flange abuts against the inner wall of the box body; the outer wall, exposed out of the box body, of the outer end of the outer threaded sleeve is in threaded connection with an inner threaded sleeve; an annular groove penetrating through the outer end face of the outer threaded sleeve is formed in the inner wall of the outer threaded sleeve; an annular rubber sleeve is inserted into the annular groove of the outer threaded sleeve; and an annular end cover is formed at the outer end of the inner threaded sleeve and abuts against the outer end face of the rubber sleeve. Through compression and expansion of the rubber sleeve, the incoming cable restraining support on a box-type transformer can restrain the incoming cable and achieve effective sealing, at the same time adds the restraining support to reduce the swing range of the cable, and utilizes the blocking strip to block the cable to reduce the rebound condition of the cable.

Description

Technical field: [0001] The invention relates to the technical field of box-type transformers, and more specifically relates to a restraint device for incoming cables on a box-type transformer. Background technique: [0002] Box-type transformers (usually referred to as "box transformers") concentrate the design of traditional transformers in box-type housings, with small size, light weight, low noise, low loss, and high reliability. They are widely used in residential quarters, commercial centers, light Stations, airports, factories, mines, enterprises, hospitals, schools and other places. The bottom of the side wall of the box transformer usually has a wire inlet hole, and the cable passes through the wire inlet hole and is bent upwards to connect with the connector of the equipment in the box. However, since the bent cable in the box has no equipment to fix it, its The swing range is large, and due to the strong toughness of the cable, it is easy to rebound into a straig...

AI Technical Summary

Problems solved by technology

The bottom of the side wall of the box transformer usually has a wire inlet hole, and the cable passes through the wire inlet hole and is bent upwards to connect with the connector of the equipment in the box. However, since the bent cable in the box has no equipment to fix it, its The swing range is large, and due to the strong toughness of the cable, it is easy to rebound into a straight state when it is bent upwards and is not fixed by a fixing device. If the upward bending part of the cable rebounds, it is easy to connect with the equipment Problems such as falling off occur, which reduces the safety of the equipment and makes the equipment unable to operate healthily

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