Patent ID: 6757993
Filing Date: 2004-07-06
Classification: B62D,E02F,F15B

Abstract:
A working vehicle, comprising:left and right traveling devices; a pair of hydraulic traveling motors installed to drive the traveling devices; a pair of hydraulic directional control valves provided for the respective hydraulic traveling motors in order to control traveling of the working vehicle; a pilot oil-passage for feeding pilot oil to the hydraulic directional control valves, said hydraulic directional control valves being connected in series by said pilot oil-passage; a single throttle valve provided in the pilot oil-passage which is located more upstream than an upstream one of said hydraulic directional control valves serially connected; a low pressure oil-passage connected to the pilot oil-passage which is located more downstream than a downstream one of said hydraulic directional control valves serially connected; and a traveling warning system comprising a pressure switch, said pressure switch being connected to the pilot oil-passage between said single throttle valve and said upstream one of said hydraulic directional control valves and being operated by hydraulic pressure within said pilot oil-passage, and said traveling warning system being operated on the basis of the on-off of said pressure switch.