ERRONEOUS START PREVENTION DEVICE OF TANK LORRY

摘要

PROBLEM TO BE SOLVED: To provide an eroneous start prevention device of a tank lorry capable of normal running even in the case that a door of a valve operation box is opened during running. SOLUTION: The erroneous start prevention device is provided with an air circuit provided with solenoid valve 4 for supplying air from a reserve tank 1 to a brake chamber to apply a brake lock, and a control circuit connected with a door switch 20 for detecting opening and closing of the door of the valve operation box provided on the tank lorry and a brake switch 17 for detecting operation of a brake lever of a parking brake, in which circuit the valve 4 is not energized even when the door switch 20 is turned on in the state that the brake switch 17 is turned off/while the valve 4 is energized to open by turning on the door switch 20 succeedingly after turning-on of the brake switch 17 and a valve opening state is maintained by energization to the valve 4 even when the brake switch 17 is turned off in the state.