CLIMBING TOWER CRANE AND ITS CLIMBING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a climbing tower crane erected in a building to be constructed, capable of supporting itself at any floors during floor climbing and dispersing its basic reaction in a body.;SOLUTION: A tower crane C has a mast 3 fixed at its upper end to a setting 4a for supporting a revolving structure 6 of a crane body. The lower end of the mast is provided with a lower receiving beam 23 detachably mounted on the body 2 via an expansion cylinder 21a. On the other hand, near the upper part of the lower receiving beam 23, an upper receiving beam 20 is disposed which is formed to be slid and fixed to the mast 3 and detachably mounted on the body 2 via an expansion cylinder 21b. The upper part of the upper receiving beam 20 is provided with a lower lift 15 on which supporting materials 16a, 16c are mounted to be detachable from and expandable with respect to the body 2. Near the upper part of the lower lift 15, an upper lift 11 is provided which is disposed to be slid and fixed to the mast 3. The upper lift 11 and the lower lift 15 are connected with each other via a climbing cylinder 14.;COPYRIGHT: (C)2001,JPO