SUPPORT DEVICE OF TELESCOPIC BOOM FOR MOUNTING CRANE FOR CONSTRUCTION OF TOWER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To stabilize a telescopic boom to construct a high column, by making the telescopic boom be sequentially supported on stacked column members, wherein the telescopic boom is for mounting a crane used for construction of tower structure such as highly-stacked columns and a tower.;SOLUTION: A column receiving base 6 is disposed to be movable forward and backward to a mounting base 5 fixed to each boom of the telescopic boom 1, and the column receiving base 6 is provided with a pair of holding arms 7 swinging between a holding position holding the column member 2 and a release position releasing the column member 2. A roller chain 8 is disposed inside the holding arm 7 so that a diameter of the roller chain 8 can be reduced and the roller chain is linked to the holding arm 7. When the column receiving base 6 is moved forward to press against the column member 2, the column member 2 is held by the holding arms 7, and a chain opening/closing cylinder 8a is operated to pull in the roller chain 8 and reduce the diameter thereof, the roller chain 8 tightens up the column member 2, and the boom is supported by the column member 2.;COPYRIGHT: (C)2012,JPO&INPIT