HOISTING DEVICE Russian patent published in 1995 - IPC

FIELD: hoisting devices in cranes. SUBSTANCE: hoisting device has body of running block inside which sheave on axle is installed. Sheave is enveloped by load rope. Hoisting device has also hydraulic cylinder connected with body of running block by means of rod and load hook kinematically connected with hydraulic cylinder. Kinematic train of hydraulic cylinder with hook includes framework inside of which is said hydraulic cylinder made of vertical cylinder closed with cover from the bottom and having several pairs of branches in the upper part of same cross- section located at angle to one another. EFFECT: higher efficiency. 3 cl, 19 dwg