| 摘要 |
PURPOSE:To make it possible to restrict the rolling resonance frequency to a low level, by approaching a rear cab mount to the extention of a line combining a front cab mount and the center of gravity of a cab. CONSTITUTION:A cab 11 is supported preventing the vibration by a front cab mount 13 and a rear cab mount 14 to a car body frame 10 side. The rear cab mount 14 is installed to rear cab mount seats 15 which are formed at both sides of the front end of a counterweight 12 fixed at the rear end of the car body frame 10. The front cab mount 13 is positioned on the car body frame 10 at the front end of the lower side of the cab 11. The rear cab mount 14 is at the position higher than the front cab mount 13, and positioned on the extension of a line S combining the front cab mount 13 and the center of gravity G of the cab 11. |
