| 摘要 |
A construction machinery having a cab formed so that a vibration of a main frame (4) is suppressed from being transmitted to a cab (13), wherein the cab (13) is supported on a bed frame (5) by using vibration isolating mounts (18) having laminated rubber parts (23) high in rigidity against vertical vibration and low in rigidity against horizontal vibration, a floor plate (14) of the cab (13) is connected to the bed frame (5) by using oil dampers (24) arranged horizontally, whereby the pitching, rolling, and yawing of the cab can be suppressed from occurring when the bed frame (5) is vibrated because the cab (13) performs a translation motion horizontally through the laminated rubber parts, and even if the cab (13) causes a residual vibration with the restoring force of the laminated rubber parts, the residual vibration is damped by the oil dampers (24) so as to suppress a resonance due to the residual vibration to thereby increase a comfortability in the cab (13). <IMAGE> |
