Railway cargo truck carriage inner wall cleaning device

The invention discloses a railway bulk cargo truck carriage inner wall adhesion material cleaning device, and belongs to the field of railway truck unloading devices. When the adhesion bulk materialson the four walls and the bottom in the railway cargo truck carriage need to be cleaned, a portal frame and a movable trolley are adjusted to the position over the cargo truck carriage. A hoisting motor set on a lifting mechanism is started, and a positioning and reinforcing device and a sweeping device which are connected together are put down; a wedge-shaped reinforcing block and a wedge-shapedpositioning block on the positioning and reinforcing device are used for reinforcing and positioning the cargo truck carriage; the cleaning device continues falling, a position sensor feeds back signals, and rollers and a steel wire brush rotate to clean the four walls of the carriage. When the rollers fall to the bottom of the carriage, a traction motor and a hydraulic cylinder pull the rollers on the longitudinal guide r