CROSSPIECE Russian patent published in 1995 - IPC

FIELD: load lifting, moving and mounting. SUBSTANCE: unloaded sling lower part lifting mechanism of crosspiece has cable 14 passed over sheaves 15, and counterweights 17. One end of each cable is coupled with sling lower part 6, and other end, with counterweight 17 installed for moving along guide 18 secured on frame. Sling upper part 5 is made in form of intercoupled links. Fitted on frame in area of sling fixing is grip 4 which provides for fixing of any link 5 of corresponding sling. Each guide 18 of sling lower part lifting mechanism has stop installed for engagement with counterweight 19 adjustable in height. Fitted on frame transversely in pairs are sheaves 8 over which cable 9 passes. Grips 10 secured on ends of cable 9 are intended for fixing any link 5 of corresponding sling. Sling lower part can be made in form of closed flexible member with fitted on grips. EFFECT: enlarged operating capabilities. 5 cl, 8 dwg