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Grounding cutter of rail traffic grounding device

A technology for rail transit and grounding devices, applied in high-voltage air circuit breakers, electrical components, electrical switches, etc., can solve problems affecting the efficiency of emergency repairs, such as the restoration of normal operation order, and achieve a simple and compact overall structure, easy operation, and shock load resistance. Ability-enhancing effect

Inactive Publication Date: 2013-01-02
CHENGDU ZHONGGONG ELECTRIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It generally takes 60 to 80 minutes to complete the power outage, power inspection and ground connection of a power supply zone. Such a long time, especially in emergency repairs, directly affects the efficiency of emergency repairs and the restoration of normal operating order.

Method used

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  • Grounding cutter of rail traffic grounding device
  • Grounding cutter of rail traffic grounding device
  • Grounding cutter of rail traffic grounding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 , figure 2 It is shown that the grounding knife of the rail transit grounding device, the static contact knife is fixed as a whole by a plurality of concave-shaped copper sheets through rivets, and the static contact knife has an arc-shaped protrusion that is crimped with the moving contact knife 101 when the switch is closed; The static contact arm 106 is formed by bending a strip-shaped plate: it is composed of a horizontal section with the same width, a vertically upward section and an obliquely upward section, and three strip plates are connected end to end, and the strips of the obliquely upward section and the vertically upward section The shape plates are coplanar; the static contact knife 102 is fixed on the two sides of the top of the obliquely upper strip plate of the static contact arm 106 by screws; the horizontal section of the static contact arm 106 is fixed on two insulators 108 by screws;

[0033] The movable contact blade 101 is fixed on one ...

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Abstract

The invention discloses a grounding cutter of a rail traffic grounding device and belongs to grounding mechanisms for overhauling grounding and faulty emergency maintenance grounding of a rail traffic direct-current power supply system. A movable contact cutter is fixed on an insulating rotating shaft, a copper stranded wire is connected between the movable contact cutter and a conducting board, and the conducting board is fixed on two insulators. A fixed contact cutter is composed of a plurality of copper sheets shaped like a Chinese character 'ao' in fixed mode, the fixed contact cutter is fixed on the upper portion of a fixed contact arm which is a right-angle copper board member, and the vertical portion of the fixed contact arm is a flatly-bent acute angle. The fixed contact cutter is fixed on the other two insulators, and the fixed contact arm and the conducting board are respectively connected with a contact rail and a travelling rail of rail traffic through cables. The grounding cutter of the rail traffic grounding device has the advantages of being simple and compact in structure, large in mechanical strength, long in service life and reliable in grounding.

Description

technical field [0001] The invention relates to a rail transit grounding device, in particular to a grounding mechanism for maintenance grounding and fault repair grounding of a rated voltage DC1800V and DC750V rail transit DC power supply system. Background technique [0002] The power supply system along the urban rail transit and other associated systems are in normal maintenance and emergency repair, in order to ensure the safety of the workers, at present domestic and international generally adopt the method of manually connecting the ground wire, that is, in addition to the maintenance of the power supply partition In addition to the power failure operation, it is also necessary to manually go to the pit foundation site of the power supply partition to manually connect the ground wire to the contact rail (positive pole) according to the following procedures: [0003] Connect the grounding wire of the electroscope to the running rail (negative pole) → touch the positive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/00H01H21/54
Inventor 魏以德胡均王斌钟剑任琴高波
Owner CHENGDU ZHONGGONG ELECTRIC ENG
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