Bottom-dump tramcar

According to the bottom-dump tramcar provided by the invention, ores in the carriage can be quickly unloaded and placed in an unloading station without residues. The tramcar chassis structure is hinged to the carriage structure through a hinge rotating shaft and serves as a door of the tramcar. A front axle assembly structure and a rear axle assembly structure are integrated on a tramcar door, namely a chassis. Bearing pedestals of double suspension devices are integrated at the two ends of a rear axle assembly; the vehicle can run stably, opening and closing of the vehicle door are supportedthrough the loading wheel structure in the middle of the rear axle assembly structure, the loading wheel moves along the curved rail in the station when the tramcar passes through the unloading station, the loading wheel moves along the curved rail, and the tramcar door is automatically opened and closed along with the shape of the curved rail. 本发明提供的底卸式矿车，可以将车厢内的矿石快速且无残留第卸放在卸载站之中。矿车底盘和车厢结构通过铰链旋转轴进行铰接，矿车底盘结构同时作为矿车的车门；矿车车门