PROBLEM TO BE SOLVED: To facilitate loading and unloading work of a gas cylinder to a machine by stably supporting the gas cylinder at the comparatively low position of the machine, and at a position where visibility of an operator is not disturbed.SOLUTION: The support device 3 of the gas cylinder 25 includes: a fixed frame 30 fixed to a machine body side a movable frame 31 which can be operated in a rocking manner and a fixed metal fitting 6 mounted on the movable frame 31. One end of the movable frame 31 is constituted to be connected/disconnected to/from the fixed frame 30, and the other side of the movable frame 31 is pivotally attached to the machine body side at a side lower than a connection point to the fixed frame 30 and around a horizontal direction axis x in a direction which crosses the central axis of the gas cylinder 25 which is loaded in an attitude of falling sideways. Switching between a loading attitude in the attitude of falling sideways and a descent attitude in which it is taken down on the ground in a vertical attitude, can be performed.COPYRIGHT: (C)2012,JPO&INPIT【課題】ガスボンベを機体の比較的低い位置で安定良く、かつ視界の妨げとなりにくい位置に支持し、機体に対するガスボンベの積み降ろし作業を行い易くする。【解決手段】ガスボンベ25の支持装置3を、機体側に固設した固定フレーム30と、揺動操作可能な可動フレーム31と、可動フレーム31に装着した固定金具6とを備えて構成し、可動フレーム31の一端側を、固定フレーム30に対して連結、及び連結解除可能に構成し、可動フレーム31の他端側を、固定フレーム30との連結箇所よりも下方側で、かつ横倒し姿勢で搭載されたガスボンベ25の中心軸線に対して交差する方向の水平方向軸心x周りで機体側に枢着して、横倒し姿勢で搭載した搭載姿勢と、上下向き姿勢で地面上に降ろした降下姿勢とに姿勢切換可能に構成した。【選択図】図5
