Handcart type direct-current circuit breaker and connection contact thereof

A DC circuit breaker and handcart-type technology, applied in the direction of protective switch terminals/connections, pull-out switch cabinets, electrical components, etc., can solve the problems of many assembly parts and complex contact finger structures, and achieve low processing costs and guarantee Self-strength, the effect of improving the flow capacity

Pending Publication Date: 2021-04-06
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a connecting contact of a handcart type DC circuit breaker, so as to solve the problem of many assembly parts and complicated structure of the contact fingers in the duckbill connecting contact in the prior art. Technical problem; at the same time, the present invention also provides a handcart type circuit breaker using the above-mentioned connection contacts

Method used

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  • Handcart type direct-current circuit breaker and connection contact thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0058] In the handcart-type DC circuit breaker provided by the present invention, the front ends of the inlet and outlet terminals 13 of the circuit breaker body are respectively fixedly equipped with connection contacts of special structure. 1 As a flow medium, it is used to connect the incoming and outgoing line terminals 13 of the handcart type DC circuit breaker with the main circuit busbar of the adapted switchgear, and, for the convenience of assembly, a corresponding front slot is provided on the conductive connection seat 1 4 and the rear slot 14, and install strap contact fingers on both sides of each slot, the inlet and outlet terminals 13 of the circuit breaker body are inserted into the rear slot 14 and are in electrical contact with the corresponding strap contacts, and are adapted The main circuit busbar of the switchgear is inserted into the front slot 4 and is in electrical contact with the corresponding strap contact guide, and the incoming and outgoing lines o...

specific Embodiment 2

[0075] The main difference between it and Embodiment 1 is that in Embodiment 1, the conductive connecting seat is an integral machined part, and two slots are formed on it by integral machining. In this embodiment, the conductive connecting seat is formed by a front seat body and a rear seat body fixedly assembled together in separate parts. The front seat body is provided with a front slot, and the rear seat body is provided with a rear slot. The front seat body and the rear seat body can pass through The fixed bolts are fixedly connected. In order to ensure effective contact, the butt joints of the two bases should preferably be plugged in.

specific Embodiment 3

[0077] It differs from Embodiment 1 mainly in that: in Embodiment 1, the long sides of the rectangular main circuit busbars extend in the up and down direction, and the long sides of the rectangular inlet and outlet terminals also extend in the up and down direction. Correspondingly, the lengths of the two slots are the same. Extends up and down. In this embodiment, when the long sides of the rectangular inlet and outlet terminals also extend in the up and down direction, and the long sides of the rectangular main circuit busbars extend in the left and right directions, the rectangular main circuit busbars and the rectangular inlet and outlet terminals are arranged in a cross shape. , it is necessary to arrange the length extension of the front slot in a square shape and the length extension direction of the rear slot to be vertical.

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Abstract

The invention relates to a handcart type DC circuit breaker and a connection contact thereof. The connection contact comprises a conductive connection seat, a front slot, a rear slot and a fixed connection structure, wherein the front slot is used for being inserted by a main loop busbar matched with the switch cabinet, front watchband contact fingers are installed on the slot walls on the two sides of the front slot respectively, and the front watchband contact fingers are used for making conductive contact with the main loop busbar; incoming and outgoing line ends of the handcart-type direct-current circuit breaker are inserted into the rear slot, and rear watchband contact fingers are installed on the slot walls on the two sides of the rear slot respectively and used for making conductive contact with the incoming and outgoing line ends of the handcart-type direct-current circuit breaker; and the fixed connection structure is arranged on the conductive connection seat and is used for fixedly assembling the wire inlet and outlet ends and the conductive connection seat together. According to the connection contact of the handcart type direct-current circuit breaker provided by the invention, the conductive connection of the incoming and outgoing line ends and the main loop busbar in the adaptive switch cabinet is realized by utilizing the conductive connecting seat and the front and rear watchband contact fingers arranged in the conductive connecting seat, the through-current capability is conveniently and effectively ensured, the overall structure is relatively simple, processing and manufacturing are convenient, and processing cost is low.

Description

technical field [0001] The invention belongs to the technical field of power distribution equipment, and in particular relates to a handcart type DC circuit breaker and its connection contacts. Background technique [0002] In the rail transit power system, the connection between the handcart type DC circuit breaker and the main circuit in the switch cabinet basically adopts the duckbill type connection contact, and its structure is like the DC circuit breaker disclosed in the Chinese invention patent with the authorized announcement number CN103996987B Handcart high-current primary connector, which is composed of a plurality of contact fingers, pressure springs are arranged on the outside of the contact fingers, and the contact fingers are fixed on the inlet and outlet terminals of the handcart circuit breaker through pin shafts. The contact fingers formed by two rows The front opening of the switchgear is used for plugging the main circuit busbar in the switchgear. This ki...

Claims

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Application Information

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IPC IPC(8): H01H71/08H02B11/167
CPCH01H71/08H02B11/167H02B11/04
Inventor 卢留洋沙云鹏李伟令王海燕袁端磊朱志豪左智华李禹生冯祥伟马明乐费翔徐铭辉
Owner PINGGAO GRP
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