TRAVEL CONTROL DEVICE FOR WHEEL TYPE WORK VEHICLE

摘要

PROBLEM TO BE SOLVED: To reduce or prevent a dash-out phenomenon of a work vehicle during travelling caused by operation other than the travelling.SOLUTION: A travel control device for a wheel type work vehicle includes valve control means 120 and 162 for controlling a flow control valve 161 in accordance with a traveling operation amount detected by traveling operation amount detecting means 171, a working operation amount detected by working operation amount detecting means 172, and a discharge pressure of a hydraulic pump 130 detected by discharge pressure detecting means 173. The valve control means 120 and 162 control a flow rate of pressure oil to be supplied to a traveling motor 115 so as to prevent a dash-out phenomenon of the wheel type work vehicle when an operation state is shifted from a traveling single operation state in which a traveling operation member 155 is operated and working operation members 156 and 157 are not operated to a composite operation state in which the traveling operation member 155 is operated and the working operation members 156 and 157 are operated.