A system for controlling the extension and retraction of the school bus safety escape door pedal

A technology of safety escape doors and pedals, applied in the layout of pedals or ladders, vehicle components, transportation and packaging, etc., can solve the problems of potential safety hazards, bursting of connecting air pipes, and lack of manual air valves, etc., and achieve the effect of rapid and safe evacuation
CN104986119BActive Publication Date: 2017-07-14交运集团有限公司青岛黄岛分公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
交运集团有限公司青岛黄岛分公司
Publication Date
2017-07-14

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Abstract

The invention relates to the field of school bus safety facilities, in particular to a system for controlling the extension and retraction of a school bus safety escape door pedal. It includes: air pump, two-position five-way manual air valve, two-position five-way solenoid valve, safety pedal, control circuit and cylinder, the P-position air source port of the two-position five-way manual air valve is connected to the air pump; The port is connected to the first interface of the cylinder, and the reversing port at B1 is connected to the second interface of the cylinder; a return spring is arranged in the cylinder, and when the cylinder is in zero position, the safety pedal is in an extended state. When the electronic control system of the safety escape door pedal fails, the two-position five-way manual air valve can continue to work independently, and the safety escape door pedal can be opened manually to achieve the rapid and safe evacuation of the vehicle in an emergency purpose.
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Description

technical field

[0001] The invention relates to the field of school bus safety facilities, in particular to a system for controlling the extension and retraction of a school bus safety escape door pedal. Background technique

[0002] The existing school bus safety escape door pedal extension and retraction system does not have a manual air valve, and completely relies on electronic control to control the extension and retraction of the safety escape door pedal, such as image 3 As shown, it can be known that the current needs to pass through the first main power switch 2, the second main power switch 3, the first fuse 4, the ignition switch 5, the second fuse 6, the third fuse 7, the magnetic control switch 8, and the electromagnetic relay 9 Only then can the solenoid valve 12 be reached to make it work normally, so the battery 1, the first main power switch 2, the second main power switch 3, the first fuse 4, the ignition switch 5, the second fuse 6, the third fuse 7, the ma...

Claims

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