CONNECTING DEVICE Russian patent published in 2010 - IPC E21C35/12 

FIELD: mining.

SUBSTANCE: connecting device for drawing knife installations with control system for controlling the horizon of the drawing knife cut, namely of coal drawing knife, has a composite connecting cantilever welded to chute section or the guide section of drawing knife installation. Connecting cantilever has the main part which is made as an integral part of hinged seat section for receiving hinged head of hydraulic cylinder for control of transverse inclination of conveyor and which is equipped with fork-shaped cantilever stop made with an offset as to the height relative to hinged seat. Cantilever stop includes two flanges located parallel to each other and internal sides of which are located at the distance opposite each other and equipped with holes for a bolt for receiving a hinged bolt interacting with the head part of cantilever beam. The main part of connecting cantilever consists of cast part; at that, both flanges on their external sides are equipped with support ribs moulded in block and protruding on sides, and/or holes for bolts diverge conically from inner side to outer side for receiving clamping parts interacting with hinged bolt.

EFFECT: simplifying the design of connecting device; operating reliability, possibility of being used in sliding and detachable drawing knives, reduction of wear of holes for hinged bolt.

11 cl, 5 dwg