Hopper unloading hatch, and hopper car comprising such a hatch

摘要

The invention relates to a hopper unloading hatch (2) comprising: - a frame (4) with two lower openings (10), the two lower openings (10) being separated from each other by an intermediate part (12) of the frame (4); - a drum (14) rotatably mounted on the frame (4), and having two peripheral walls separated from each other by a transverse unloading channel passing through. The two peripheral walls are configured to individually close the two lower openings (10) of the frame (4) when the unloading hatch (2) is closed, and the unloading channel is configured to come opposite one of the two openings bottom (10) of the frame (4) when the unloading door (2) is open. The invention also relates to a hopper and a hopper car. Figure for abstract: Fig. 8.