To enhance workability etc. in transportation by locking a boom cylinder in an extended state through the use of a protective cover for a rod provided in the boom cylinder.
An arm 13 and a bucket 14 of a working device 10 are folded to the side of a boom 12, and the boom 12 is put into the state of being raised by being greatly moved upward while being turned up. So that a hydraulic excavator can be transported in this state, a fastening bolt 28 makes a stopper 27 detachably attached to the protective cover 22 for protecting the rod 21 of the boom cylinder 15 from the outside. Thus, the displacement of the rod 21 of the boom cylinder 15 in the direction of contraction midway through the transportation of the hydraulic excavator is regulated by means of the stopper 27, the fastening bolt 28, etc. , so that an occupied area per product can get smaller.
COPYRIGHT: (C)2008,JPO&INPIT
Kazunori Yamada
Takeshi Hibiya
Umezu Minoru
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