DEVICE FOR EVACUATION OF CRANE OPERATOR IN EMERGENCY Russian patent published in 2002 - IPC

FIELD: mechanical engineering; cranes. SUBSTANCE: proposed device for emergency evacuation of crane operator has cradle with guides mounted at side of crane control cabin and coupled with lifting /lowering mechanism. Cradle is suspended from sling of hand winch mounted on crane. Vertical guides are mounted on crane control cabin. Said guides are connected by crossmember on which hand winch is installed. Lifting/lowering mechanism is made in form of U-shaped case enclosing the cradle, two side opposite walls of which are made in form of multilever load-bearing pantigraph, and third front wall is formed by horizontal rods connected with ends of articulated larger levers of pantographs. Upper levers of each pantograph are hinge-connected with crossmember, and lower levers, with cradle. Each pantograph has rolls installed in places of interconnection of larger levers for engagement with vertical guide of crossmember, and with one additional roll located on axle of last but one connection of larger starting from top, for engagement of this roll with cradle guide. Crossmember can be secured on crane bridge gallery. EFFECT: facilitated evacuation of crane operator in emergency. 2 cl, 5 dwg