Left-right limiting device for rear door of dumper

The utility model discloses a left-right limiting device for a rear door of a dumper, and belongs to the technical field of dumper limiting devices. The technical scheme includes that the left-right limiting device comprises limiting blocks and limiting plates, the limiting blocks are used for guiding and limiting of the top of the rear door, and the limiting plates are used for guiding and limiting of the bottom of the rear door; the limiting blocks are arranged on one side, facing a compartment, of the upper portion of the rear door symmetrically, and the cross sections of the guiding and limiting ends of the limiting blocks are inclined surfaces respectively; each limiting plate is arranged at one end, close to the rear door, of the lower portion of the corresponding side plate of the compartment, the same limiting plates are arranged at same positions of the two side plates respectively, and the cross sections of the guiding and limiting ends of the limiting plates are inclined surfaces respectively. The left-right limiting device is applied to the dumper. The left-right limiting device is simple in structure, convenient to mount and low in production cost.