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Rail transit grounding device

A technology for rail transit and grounding devices, which is applied to power devices, high-voltage air circuit breakers, electrical components, etc. inside the switch. It 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 and prevent misoperation. , the structural design is practical and reasonable

Active Publication Date: 2015-01-14
CHENGDU ZHONGGONG ELECTRIC ENG CO LTD +1
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  • 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] This device (JN-15 grounding device) is a brand-new electric grounding device used to replace manual grounding wires. It can be remotely operated electrically, or locally operated electrically and manually. During emergency repair and overhaul, it reliably electrically connects the contact rail (positive pole) and running rail (negative pole) of rail transit according to the instructions. See figure 1 (About orientation: facing the direction of the panel, the front of the panel is outside, and the back of the panel is inside; the description of one end and the other end refers to the same plane).

[0075] JN-15 grounding device passed all type tests in May 2012, test certificate number: NO: 2012-892A-1.

[0076] figure 1 Among them, the static contact arm is electrically connected to the contact rail (positive pole of rail transit) through a cable; the moving contact knife is electrically connected to the running rail (negative pole of rail transit) through a cable, a...

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Abstract

The invention provides a rail transit grounding device and belongs to devices for inspection grounding and breakdown first-aid repair grounding of DC1800V and DC750V rail transit systems. A stationary contact cutter and a movable contact cutter of the grounding device are respectively and electrically connected with a contact rail and a walking rail of the rail transit. An electric operating mechanism consists of a motor, a driving gear, a transforming gear meshed with the driving gear and a rotary gear. In an electric operating mode, the transforming gear is meshed with the rotary gear, and a manually-operated socket is plugged so that the manual operation cannot be performed. In a manual operating mode, the transforming gear is not meshed with the rotary gear, a motor power supply is disconnected through a change-over switch, simultaneously the manually-operated socket is opened, and on-off switches of the stationary contact cutter and the movable contact cutter are controlled through a manually-operated rocking handle. The manually-operated socket is plugged in a locking mode, and the motor power supply is disconnected, so that the manual operation and the electric operation cannot be performed. The rail transit grounding device has the advantages of being practical and reasonable in structural design, free of misoperation and high in electrical safety.

Description

technical field [0001] The invention relates to a grounding device for urban rail transit, in particular to a grounding device for normal maintenance and emergency repair of rated voltage DC1800V and DC750V systems. 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 pole of the electroscope to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/00H01H3/26
Inventor 肖世雄黎兴源周书伟胡钧王益范才斌詹先柏王斌杜萍
Owner CHENGDU ZHONGGONG ELECTRIC ENG CO LTD
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