| 摘要 |
PURPOSE:To smoothly engage an engaging member of a cab with a receiving seat of a rear hydraulic suspension mechanism by closing a power source switch of an electronically controlled device for the prescribed period of time to control the vehicle height of the rear hydraulic suspension mechanism to the prescribed value when the tilt-lock of the cab is released. CONSTITUTION:A cab 3 is supported by a vehicle frame 25 through each hydraulic suspension mechanism 19 (19FL, 19RL), etc., at the fore and rear and right and left of a bottom frame 3a. The cab 3 is tilted by a hydraulic actuator 65. In addition, the change in the vehicle height relative to the vehicle frame 25 of the cab 3 is detected by a vehicle height sensor 28. The fluid amount of each hydraulic suspension mechanism 19 is controlled by an electronically controlled device 47 based on the detected signal of the vehicle height sensor 28. In this constitution, the tilt-lock is detected by a means 42 when the tilt-lock of the cab 3 is released, and a power source switch 44a of the electronically controlled device 47 is closed for the prescribed period of time. This controls the vehicle height of the rear hydraulic suspension mechanism 19RL to the prescribed value. |
