Dumper rear door locking device

The utility model discloses a locking device for a rear door of a dump truck, and belongs to the technical field of dump trucks. Aiming at the problem of material leakage caused by difficulty in controlling a gap between a rear door and a carriage of the dumper in the prior art, the utility model provides the rear door locking device of the dumper, which comprises a travel switch, a rear door hook assembly, a baffle plate, a proximity switch, an electric push rod, an electric push rod support, a controller and an alarm, the problem of material leakage caused by an overlarge gap between the rear door and the carriage can be solved, an alarm prompt can be given in time when the carriage is lifted for unloading without opening the rear door lock, and the rear door lock has the advantages of being convenient to install, low in cost and high in stability and safety. 本实用新型公开了一种自卸车后门锁紧装置，属于自卸车技术领域。针对现有技术存在的自卸车后门与车箱之间间隙难以控制而导致泄漏物料的问题，本方案提供了一种自卸车后门锁紧装置，包括行程开关、后门勾组件、挡板、接近开关、电动推杆、电动推杆支座、控制器、报警器，不但可以解决后车门与车箱之间因间隙过大导致物料泄漏