Pressure control switch for train

Abstract

The invention relates to a pressure control switch for a train; the pressure control switches are symmetrically arranged in the inner sides of a train rail. The pressure control switch comprises a box body, a buffer device, an anti-explosion travel switch, a rocking arm and a bracket, wherein the buffer device and the anti-explosion travel switch arranged in the box body; the rocking arm is arranged on one outer side of the box body and connected with the buffer device; and the bracket is fixed on two ends of the box body. The buffer device comprises a fixed plate, a touch block, a connecting rod, a small buffer reset spring and a big buffer reset spring, wherein the connecting rod is connected between the fixed plate and the touch block, the small buffer reset spring is arranged on the connecting rod between the fixed plate and the touch block, and the big buffer reset spring is arranged at the lower end of the fixed plate; the rocking arm is connected with the fixed plate through a connecting shaft, and the rocking arm drives the fixed plate to be inclined so as to press the small buffer reset spring and pull the big buffer reset spring under the pressure of the wheels, the connecting rod and the fixed plate are synchronously inclined to drive the touch block to move downwards to touch retractable contacts on the anti-explosion travel switch to send a signal; and an adjustable moving block for fixing and installing is arranged on the bracket. The pressure control switch is firm, durable, stable, reliable, fireproof, explosion-proof, waterproof and temperature resistant.

Description

technical field [0001] The invention relates to a detection device, in particular to a train voltage-controlled switch for detecting the states of a train approaching and arriving and providing signals. Background technique [0002] At present, the devices for detecting the approach of trains are all realized by infrared rays or ultrasonic waves, but the above methods are unstable and easily disturbed, and it is difficult to meet the requirements of temperature resistance and explosion protection. Contents of the invention [0003] The purpose of the present invention is to improve and innovate on the shortcomings and problems existing in the background technology, and to provide a train voltage control switch with simple structure, accurate and reliable signal capture, and good stability. [0004] The purpose of the present invention is to construct a voltage-controlled switch symmetrically arranged on the inner side of the train rail, including a box body, a buffer devic...

AI Technical Summary

Problems solved by technology

[0002] At present, the devices for detecting the approach of trains are all realized by infrared rays or ultrasonic waves, but the above methods are unstable and easily disturbed, and it is difficult to meet the requirements of temperature resistance and explosion protection.

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