| 摘要 |
STABILIZING CYLINDER FOR A ROUGH TERRAIN FORKLIFT A stabilizing device for use with a vehicle such as a rough terrain forklift. The stabilizing device employs a cylinder with a movable piston mounted therein, with upper and lower piston rods extending from the piston, The cylinder is fixed to the frame of the vehicle, and an end of the lower piston rod is fixed to the rear axle of the vehicle, which is pivotably mounted to the underside of the frame. A fluid communication system including restrictive orifices provides communication between upper and lower chambers of the cylinder so that, during upward or downward movement of the piston within the cylinder, fluid is forced to pass through the restrictive orifices to provide damping of oscillations, and thereby a firmer feel and more stable handling to the vehicle. A valve is movable to varying positions in response to the position of the boom relative to the frame, so that a more restrictive orifice is employed when the boom is moved above a predetermined angle, to increase the stability of the vehicle. When a larger predetermined angle is attained, the valve is moved to a lock-out position to prevent fluid communication between the cylinder chambers, providing a four-point stability stance to the vehicle. Alternatively, the valve can be moved to its lock-out position by operation of a manual toggle switch by the operator.
|
