FULL-ELONGATION/BOTTOMING PREVENTION DEVICE OF SUSPENSION CYLINDER

摘要

PROBLEM TO BE SOLVED: To prevent the full-elongation and bottoming of a suspension cylinder.SOLUTION: A full-elongation/bottoming prevention device of a suspension cylinder for a transportation vehicle comprises: the suspension cylinder; a pressure sensor which detects the pressure of the suspension cylinder; a stroke sensor which detects a stroke of the suspension cylinder; a condition determination part which determines that an oil amount adjustment condition is established on the basis of the pressure detected by the pressure sensor and the stroke detected by the stroke sensor; and an oil amount adjusting device which adjusts an oil amount in the suspension cylinder so that the stroke of the suspension cylinder is made to approximate a prescribed stroke/pressure characteristic in the suspension cylinder when the condition determination part determines that the oil amount adjustment condition is established.SELECTED DRAWING: Figure 5