LOAD-LIFTING MECHANISM Russian patent published in 1994 - IPC

FIELD: load-lifting devices. SUBSTANCE: mechanism has cramp 1 with lugs 2, locking lever 4 and blocks 5 fastened on axle 3, plates 7 pivotally connected to end of cramp 1 overlapping slit 6 receiving locking lever 4. Blocks 5 are engageable with cramp 1 by torsion springs and have pin engageable with boss of lever 4. Cramp 1 is guided to load. During lowering of the mechanism load hoists lever 4 which in its turn hoists plates 7 from position I to position III. Under the effect of own weight plates 7 return to initial position, and lever 4 comes to position II. During hoisting of the mechanism load is laid on lever 4 thrusting against plates 7. With tensioning cargo sling blocks 5 are turned on axle 3 counterclockwise and twist springs, the pin is brought in behind projection of boss of lever to spring-load lever 4. During deslinging cargo is lowered on discharging platform and in this case tension of cargo sling decreases. Under the action of springs blocks 5 together with lever 4 are turned clockwise. During hoisting of the mechanism cargo turns lever 4 counterclockwise and is released from the mechanism. EFFECT: enhanced handling convenience as a result of automation of slinging and deslinging operations. 4 dwg