CONTROL DEVICE FOR WORK VEHICLE

摘要

PURPOSE:To reduce equipment cost and improve safety of work when using a work vehicle equipped with a work device such as a lower to be freely raised or lowered by using a single motor in common so that a work device elevator mechanism and a running clutch mechanism can be selectively operated. CONSTITUTION:A lift screw 19 and a clutch screw 20 are fitted freely rotatably respectively in front and rear of a spline boss 18 of a rotary shaft axially supported with a vehicle frame 16. Clutch claws are arranged respectively in front and rear end parts of a shift clutch 21 engaged with the boss 18 and are made to selectively engage with clutch claws arranged on the corresponding positions of the respective screws 19 and 20. A movable piece 26 screw-engaged with the lift screw 19 is connected by means of a rod 27 to a lift arm 6 to constitute a lift arm operation mechanism 8. An arm 32 on an operation shaft 29 integral with an arm 30 pivot-supporting a movable piece 28 screw-engaged with the clutch screw 20 is connected by means of a rod 33 to a clutch arm 15 to constitute a clutch operation mechanism 14. A rotary shaft is made to turn in normal or reverse direction by means of a control motor 34 to perform required work.