BOOM TRANSPORTING FIXING DEVICE, METHOD OF ASSEMBLING MOBILE Crane, AND MULTI-STAGE BOOM

摘要

PROBLEM TO BE SOLVED: To provide a boom transport fixing device capable of reducing an occupied space necessary for disassembling and assembling operations of a revolving frame and a boom.SOLUTION: A fixing device 100 for transporting a multi-stage boom 4 installed on a loading platform of a transport vehicle 90 and having a base end side boom 41 mounted rotatably to a boom mounting part of a crane and a distal end side boom 45 extendable with respect to the base end side boom comprises: a distal end side boom fixing device 110 fixed on the vehicle front side of the loading platform for fixing the distal end side boom on the loading platform while fixing a tip of the distal end side boom; and a base end side boom support device 120 fixed on the vehicle rear side of the loading platform for slidably supporting the base end side boom with a roller. When the base end side boom is extended in a state of fixing the tip of the distal end side boom by the distal end side boom fixing device, the base end side boom slides on the roller and moves to the rear part of the vehicle while the position of the distal end side boom is unmoved.