Intermittent type gas supply valve

Abstract

The invention relates to a valve for switching on and switching off a pipe, in particular to an intermittent type gas supply valve for a bus extending-and-contracting folding door gas-filled pipe. Theintermittent type gas supply valve comprises an upper valve body and a lower valve body. The upper valve body is fixedly connected with the lower valve body in a sealed manner. The upper portion of the upper valve body is provided with a gas outlet. A gas exchange cavity is formed inside the upper valve body and composed of a first gas cavity, a second gas cavity and a direct gas supply cavity. The bottom of the lower valve body is provided with a gas inlet. A double-channel gas supply cavity is formed inside the lower valve body. According to the gas supply valve, gas is supplied through mechanical adjustment control; the original electronic control mode is replaced; the intermittent type gas supply valve can be applied to poor environments such as the no-power power-off condition, in particular to a gas supply system of a bus door; it is guaranteed that the gas supply valve works normally when a bus is powered off or has an accident or is in danger; and furthermore, safety of passengers on the bus can be stably guaranteed.

Description

technical field [0001] The invention relates to a valve for opening and closing pipelines, in particular to an intermittent air supply valve for the inflation pipeline of telescopic folding doors of buses. Background technique [0002] With the improvement of people's living standards and the acceleration of the pace of life, traffic safety has gradually become an important matter involving people's livelihood and personal safety. Now people mainly use green public transportation for travel. Public transportation has the advantages of low price and convenient transportation. Environmental protection and other characteristics, so the safety of bus driving has become the key to bus operation. In the safety of bus driving, the safety of the use of bus folding doors has become the top priority. In the use of bus folding doors, the driver needs to control the hydraulic drive components to drive the folding The doors are opened and closed, but because the hydraulic drive component...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of people's living standards and the acceleration of the pace of life, traffic safety has gradually become an important matter involving people's livelihood and personal safety. Now people mainly use green buses to travel, which are low in price and convenient to ride. Environmental protection and other characteristics, so the safety of bus driving has become the key to bus operation. In the safety of bus driving, the safety of the use of bus folding doors has become the top priority. In the use of bus folding doors, the driver needs to control the hydraulic drive components to drive the folding The doors are opened and closed, but because the hydraulic drive components are controlled by solenoid valves, when the vehicle lacks power or the solenoid valve is damaged, the bus doors will not be able to be opened and closed, which brings a lot of traffic to the passengers during the driving of the vehicle. Security risks

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