Automatic opening and closing device for tail door of dustbin of motor sweeper

The automatic opening and closing device comprises an upper sliding door, a lower folding door hinged to the bottom of the upper sliding door, a winch mechanism connected with the lower folding door, a lifting mechanism connected with a compartment tail opening through sliding blocks on the two sides of the sliding door, and a compartment built-in box body mechanism. The device has an automatic opening and closing function, has two forms of upturning type opening and closing and underlaying type opening and closing to meet different requirements, when the device is opened in an underlaying mode, a ramp for rapid loading and unloading can be provided for a matched box body mechanism, so that the garbage cleaning efficiency is improved, meanwhile, the loading and unloading process is more stable, and the device is provided with an electromagnetic door lock, so that the device is convenient to use. And the tail door can be sealed more tightly. 本实用新型公开了一种清扫车的垃圾箱尾门自动开闭装置，包括上滑门，上滑门底部铰接下折门，下折门连接绞盘机构，滑门两侧滑块连接车厢尾部敞口的升