| 摘要 |
<p>The operation of a working machine of a hydraulic excavator into a storage posture is facilitated and this storage posture is prevented from charging during traveling. To this end, a support member (20) fixed to an upper turning body (2) is disposed below the middle point between the center of gravity A of a first boom (3) inclined rearward and folded into the storage posture and the center of gravity B of a second boom (5). A support member (30) fixed to a lower traveling body (1) is similarly disposed below the middle point between the center of gravity C of a substantially horizontal arm (10) and the center of gravity D of a bucket (13). At this time, the storage work is made easy by bringing an arm cylinder (12) the shortest. Because the moment round the connecting pin (11) of the second boom and the arm is small, the storage posture does not change.</p> |
