CHAIN GATE Russian patent published in 2008 - IPC E21F13/00 B65D90/54 

FIELD: mining.

SUBSTANCE: invention concerns auxiliary transport equipment. Particularly it concerns chain gates and can be mainly used for overlapping of outlet orepass holes at delf, and also can be used for outlet of large-sized cargo from bunkers. Gate contains two rings located under discharge opening of facility for discharge of large-sized cargo, located one under the other and oriented in horizontal plated, at that connected to each other by vertically oriented round-link chains, fixed on rings by its running ends and located throughout rings perimeter. On top ring throughout external perimeter there are located running rollers with ability of its movement by circular rail fixed on circular lug of facility for outlet of large-sized cargo. At that ring is outfitted by ring gear with ability of it interaction to gear, interlocked to rotary drive. Bottom ring is outfitted by lugs located by its external perimeter with ability of its interaction to vertically-oriented runners of cylindricity casing with ability of coverage by it with chains gap.

EFFECT: load reduction to elements of crank drive, providing transportation energy capacity of bulk cargo and specified drive power.

2 dwg