| 摘要 |
PCT No. PCT/JP97/01833 Sec. 371 Date Jan. 12, 1998 Sec. 102(e) Date Jan. 12, 1998 PCT Filed May 29, 1997 PCT Pub. No. WO97/46766 PCT Pub. Date Dec. 11, 1997A rear side of an operator's cabin body is resiliently supported by a rubber mount, and a front side of the operator's cabin body is resiliently supported by a spring mount, of which a spring constant is set to be smaller than that of the rubber mount. Accordingly, a vibration transmissibility of pitching transmitted from a revolving frame to the operator's cabin body can be kept small, and pitching is damped by an oil damper which constitutes the rubber mount. Further, bounce and rolling transmitted to the operator's cabin body are converted into pitching for attenuation of vibration.
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