LIFTING DRIVE FOR LIFTING BEAM Russian patent published in 2003 - IPC

FIELD: load handling facilities. SUBSTANCE: lifting drive set into operation pneumatically, hydraulically or electrically for lifting beam installed for displacement along overhead running rail is provided with multiple disk brake with overrunning clutch. Said brake is held in applied position by mechanical tension spring and can be released by releasing force. Shaft of lifting drive passes through brake. Guide cavity is provided in lifting drive shaft end section projecting from overrunning clutch at end face side. Said cavity is designed for journal of crank handle. In case of interruption of power supply, said crank handle can be used to lift load suspended from beam overrunning clutch, and to lower the load overcoming return force of tension spring at release of multiple disk brake. EFFECT: possibility of controlled lifting and lowering of load in case of interruption of power supply. 5 cl, 10 dwg