KRATZER CRANE Russian patent published in 1996 - IPC

FIELD: mechanical engineering; materials handling equipment; crane for unpiling loose material and delivering it to trunk conveyor. SUBSTANCE: crane has boom with vertical walls and guides on which running rolls are installed. Rolls are coupled with traction chains and vertical plates. Limit switches interlocked with crane control system are installed on boom. Blocks with stops installed for engagement with flexible members are hinge-mounted on boom. Running rolls are installed on axles with spherical heads. Boom is made up of T-shaped members with lower and upper webs for running rolls. EFFECT: enlarged operating capabilities. 3 cl, 9 dwg