BALANCE WEIGHT LIFTING AND LOWERING SYSTEM FOR MOBILE CRANES

摘要

There is proposed a system for lifting and lowering the balance weight(s) [no reference signs] provided on a mobile crane, which system enables the balance weight(s), used for providing the balance of the crane while lifting load, to be attached onto the crane and to be removed from the crane. The system has a cylinder pipe [1] and a rotatable main shaft [8] which can turn the cylinder rod [2] of said cylinder pipe.