CHAIN GATE Russian patent published in 2008 - IPC B65D90/54 B65G65/30 

FIELD: transport.

SUBSTANCE: invention can be used, primarily, for shutting off the orepass holes at mining enterprises, as well as for letting the large-size objects from the hoppers. In compliance with the invention, the chain gate lower ring incorporates ledges to interact with vertically arranged guides of cylindrical casing enclosing with a gap the gate chains. The upper ring is made up of different-diameter coaxial cylinders interconnected by a horizontal flange. Greater-diameter lower cylinder is furnished with a flat horizontal flange bent outward. The said flange lower surface accommodates a toothed rim interacting with the turn drive gear, the said turn drive being fastened on the casing outer surface. The chain curtain is made up of alternating round-link chains with various linear mass ensured by varying rod diameters and chain pitch. Note that the smaller linear mass chain length is assumed to be greater than that of adjacent greater linear mass chains.

EFFECT: simpler design and higher reliability.

3 dwg