| 摘要 |
PURPOSE:To prevent a cab from being subjected to impact upon abrupt forward tilting, by providing such an arrangement that an engaging part which swings and approaches so as to engage with the shaft part of a coupling part between a lost motion arm and the front end of a rod in association with the tilting of the cab by a predetermined angle. CONSTITUTION:When hydraulic pressure is supplied into a hydraulic cylinder device 3, a rod 6 extends to make the coupling part between a lost motion arm 7 and a piston rod 6 abut against the bottom surface of a cab 1. In this condition a lock arm 11 is spaced from a pin 8 in its abutting position. When the piston rod 6 extends further so that the tilting of the cab 1 about cab tilt center P as a fulcrum is started, the lock arm 11 swings relatively toward the pin 8 and approaches the pin 8, and is therefore engaged with the pin 8 before the gravitational center moves beyond the center P. |
