| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a construction machine, movable by self-actuated-traveling in a height-limited place such as under an overpass, without putting the construction machine in a transportation state.SOLUTION: A construction machine (an earth drill 11) comprises: an upper turning body 13 turnably provided on a lower travel body 12; a work device (an expansion boom 15) provided in a front part of the upper turning body; a rising-up/falling-dowm possible gantry 16 provided in a rear upper part of the upper turning body; and a work device raising up/bring down raising-up/bring-down wire 25 wound around a gantry sheave 26 provided in the gantry. The construction machine is provided with a gantry rise regulation means (a connection member 38) for regulating a rise of the gantry in an intermediate rise state while the gantry reaches a standing state from a falling-down state. When both the expansion boom and the gantry are in the falling-down state, the raising-up/bring-down wire is hoisted, and the rise of the gantry is regulated in the intermediate rise state by the gantry rise regulation means, and the tip side of the work device is raised up to a predetermined height.</p> |
