| 摘要 |
PROBLEM TO BE SOLVED: To reduce a spring constant in the back-and-forth direction of a cab with a simple structure of a link lever bush, and to keep a damping effect to a shock load high. SOLUTION: In this cab suspension device, the front end of a link lever is pivotally supported by a front bush provided in a chassis bracket, a vertical buffer device is disposed between the front bush and a cab side bracket, and the rear end of the link lever is pivotally supported by the cab side bracket through the link lever bush 9. The link lever bush 9 comprises a rubber elastic body 20 having oil chambers 21, 22 filled with a low-viscosity fluid, sandwiching an inner tube 10 from the front and the rear between the inner tube 10 and an outer tube 11, while the front and rear oil chambers 21, 22 communicate with each other through an orifice 25. |
