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Vehicle-mounted electric control pneumatic grounding switch

A grounding switch and electronic control technology, applied in the field of rail vehicles, can solve the problems of low safety, cumbersome and laborious operation, etc., and achieve the effect of realizing function switching.

Inactive Publication Date: 2020-04-21
BEIJING CED RAILWAY ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation is cumbersome and laborious, and it is in close contact with the high-voltage switchgear, so the safety is low

Method used

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  • Vehicle-mounted electric control pneumatic grounding switch
  • Vehicle-mounted electric control pneumatic grounding switch
  • Vehicle-mounted electric control pneumatic grounding switch

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0015] The preferred embodiment of the vehicle-mounted electronically controlled pneumatic grounding switch of the present invention is:

[0016] It includes a grounding switch arm, the grounding switch arm is installed on the top plate of the base through the grounding switch shaft, the swing cylinder mounting plate is installed under the top plate of the base, and the swing cylinder mounting plate is equipped with a swing cylinder. The output end of the oscillating cylinder is connected with the rotating shaft of the grounding switch through transmission.

[0017] A dual-source solenoid valve is installed on the intake pipeline of the swing cylinder, and the dual-source solenoid valve includes a left solenoid valve and a right solenoid valve. The left solenoid valve and the right solenoid valve are respectively output to the two cavities of the swing cylinder, and the left solenoid valve and the right solenoid valve are respectively connected to one of the two-way DC power s...

specific Embodiment

[0029] Such as Figure 1 to Figure 4 As shown, the electro-pneumatic grounding switch is used in conjunction with the circuit breaker to effectively ground the grounding contact of part 3 assembled on the circuit breaker. The overall structure includes the grounding function mechanism assembled outside the base of part 4, and the assembled The rotating arm drive mechanism and signal feedback mechanism inside the base. The grounding function mechanism includes part 1 grounding switch arm and part 2 grounding clamp. The grounding arm is driven by the arm drive mechanism and rotates clockwise or counterclockwise at a certain angle, and two grounding clips are assembled on the grounding switch arm, one high and the other low. Above, the rotation of the rotating arm drives the movement of the grounding clamp to realize the contact and breaking of the grounding clamp and the grounding contact, and the function of grounding and breaking (that is, the operating position) of the ground...

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Abstract

The invention discloses a vehicle-mounted electric control pneumatic grounding switch. The vehicle-mounted electric control pneumatic grounding switch comprises a grounding switch rotating arm; the grounding switch rotating arm is installed at the upper surface of the top plate of a base through a grounding switch rotating shaft; an oscillating air cylinder installation plate is installed at the lower surface of the top plate of the base; an oscillating air cylinder is installed on the oscillating air cylinder installation plate; the output rotating shaft of the oscillating air cylinder is connected with the grounding switch rotating shaft; a double-source electromagnetic valve is arranged on the air incoming pipeline of the oscillating air cylinder and is connected with two paths of direct-current power supplies; the gear rotating shaft of the oscillating air cylinder is coaxially connected with a concentric cam; the concave-convex surface of the concentric cam rotates to sequentiallycompress and release the small wheels of two microswitches during rotation; the normally open and normally closed contacts of the microswitches are reversed, so that electrical on-off signals can beoutputted; and the state signals of the grounding switch are fed back. Switching operation between the grounding position and running position of the grounding switch can be carried out in a cab control system; the state signals of the grounding switch are directly fed back to a driver display screen; and therefore, operation is convenient, safe and reliable, the defect that the grounding switch is manually controlled is overcome, and safety and reliability during train overhaul and maintenance are improved.

Description

technical field [0001] The invention relates to a rail vehicle technology, in particular to a vehicle-mounted electronically controlled pneumatic grounding switch, which is mainly used for 25kV electrified railways. Background technique [0002] Electric locomotives are equipped with grounding switches. The grounding switch is an important grounding protection device in the high-voltage electrical equipment on the roof. It is used in the maintenance and repair of locomotives. The grounding switch is usually used in conjunction with vacuum circuit breakers to connect At the same time, it is grounded to prevent the accidental power supply of the network cable or the feedback power supply of the locomotive equipment during maintenance. It is an important protection device on locomotives and motor vehicles. [0003] At present, the widely used grounding switch is manually controlled, and the train switch cabinet needs to be opened to manually operate the grounding switch from th...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H31/00H01H3/24
CPCH01H3/24H01H31/003H01H31/026
Inventor 侯健伟刘志华张东远王俊峰
Owner BEIJING CED RAILWAY ELECTRIC TECH