HOPPER Russian patent published in 2009 - IPC B61D7/00 

FIELD: unloading operations.

SUBSTANCE: hopper incorporates a body with a pair of bunkers (1) resting upon frame (2) and furnished with unloading holes arranged at their lower part. Walls form each bunker. One of the walls, adjacent to the other bunker wall, features an inclined section and cover (3) arranged at the lower part to stop unloading hole and move in vertical plane. Aforesaid cover is made up of two covers arranged at an angle to each other. The first face makes a load flow guide, the other one interacts with the bunker wall vertical section, adjacent to aforesaid inclined section. The distance between vertical sections of the bunker adjacent walls is not smaller than that between outer surfaces of track railheads. Aforesaid cover moves vertically driven by actuator cylinder (8), with its one end attached to central girder and with the other one fastened to crosswise girder (10) that joints the covers.

EFFECT: ease of unloading, higher reliability and repairability.

13 cl, 4 dwg