Misoperation and mulfunction inhibiting device for car hopper

The utility model discloses a misoperation and mulfunction inhibiting device which belongs to the technical field of engineering van, and comprises a vehicle-mounted compression air source, an auxiliary box high-low gear switching valve, a force neutral gear main valve, an auxiliary box gear switching cylinder with three function cavities, a force neutral gear auxiliary valve, a power takeoff electromagnetic valve, a first one-way valve, a second one-way valve and a vehicle hopper self-locking hanger. An oil supply channel resulting in the lifting of the vehicle hopper can be cut off by the hanger under the condition that the unlocking is not conducted, so that the misoperation and malfunction inhibiting device for the vehicle hopper has the function of automatically and forcibly cutting off the driving force of a vehicle in the neutral gear, prevents a driver from forgetting to fall down the vehicle hopper, inhibits the free lifting in the driving process, simultaneously alarms, and promotes the driver to fi