An incoming cable restraint device on a box-type transformer

A box-type transformer and restraint device technology, which is applied to transformer/inductor casings, transformer/inductor components, circuits, etc., can solve problems such as large swing range, reduced equipment safety, easy to fall off, etc., and achieve effective sealing , reduce the swing range, reduce the effect of rebound

Active Publication Date: 2021-05-25
SHANDONG TAISHAN ELECTRICAL ENG & EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • An incoming cable restraint device on a box-type transformer
  • An incoming cable restraint device on a box-type transformer
  • An incoming cable restraint device on a box-type transformer

Examples

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Embodiment Construction

[0017] Example: see figure 1 , 2 , 3, an incoming cable restraint device on a box-type transformer, including a box body 1 on the box-type transformer, the bottom of the side wall of the box body 1 is formed with an inlet hole, and the inner screw of the wire inlet hole of the box body 1 Connected with an external thread sleeve 2, the inner end of the external thread sleeve 2 is formed with a flange 22, the flange 22 is against the inner wall of the box body 1, and the outer end of the external thread sleeve 2 is exposed to the outer wall of the box body 1 and is screwed with an inner A threaded sleeve 3, the inner wall of the externally threaded sleeve 2 is formed with an annular groove 21 that runs through the outer end surface of the externally threaded sleeve 2, and an annular rubber sleeve 4 is inserted into the annular groove 21 of the externally threaded sleeve 2. The outer end of the threaded sleeve 3 is formed with an annular end cap 31, and the end cap 31 abuts agai...

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Abstract

The invention discloses an incoming cable constraint bracket on a box-type transformer, which comprises a box body on the box-type transformer, the bottom of the side wall of the box body is formed with an inlet hole, and the inner thread of the inlet hole of the box body is screwed with an external thread The inner end of the external threaded sleeve is formed with a flange, and the flange is against the inner wall of the box body. The outer end of the outer threaded sleeve is exposed to the outer wall of the box. There is an annular groove that runs through the outer end surface of the external thread sleeve, and a circular rubber sleeve is inserted into the annular groove of the external thread sleeve. The outer end of the internal thread sleeve is formed with an annular end cap, and the end cap is against the rubber on the outer end of the sleeve. The invention utilizes the compression and expansion of the rubber sleeve to constrain the incoming cable and realizes effective sealing. At the same time, the restraint bracket is added to reduce the swing range of the cable, and the cable is blocked by the retaining bar to reduce the situation of cable rebound.

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...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01F27/02H01F27/04
CPCH01F27/02H01F27/022H01F27/04
Inventor潘建礼
OwnerSHANDONG TAISHAN ELECTRICAL ENG & EQUIP CO LTD