Control method and control apparatus for work vehicle

摘要

The present invention provides a control method and a control apparatus for a vehicle that make it possible to moderate or completely eliminate the impacts generated when the bucket is operated in a tilt direction, from a state in which the bucket in a dump position is forcibly actuated in the tilt direction and the bucket hydraulic cylinder is pressurized by the lifting operation of the boom and also to perform the boom lifting operation with good operability and workability. Control is performed to supply a pressure oil to the bucket hydraulic cylinder so as to actuate the bucket hydraulic cylinder in the tilt direction when a work equipment is being actuated in an actuation region close to an actuation region in which the bucket is forcibly actuated in the tilt direction by lifting the boom in a state in which the bucket is operated to a neutral position or dump operated, or when the bucket is being actuated in the tilt direction in the actuation region in which the bucket is forcibly actuated in the tilt direction. Further, a pressure oil supplied to the bucket hydraulic cylinder is controlled so as to restrict an actuation speed of the bucket hydraulic cylinder in a dump direction when [the work equipment] being actuated in an actuation region close to an actuation region in which the bucket is forcibly actuated in the tilt direction by operating the boom to a neutral position or lowering the boom in a state in which the bucket is dump operated.

主权项

1. A control method for a work vehicle that is applicable to a work vehicle of a structure in which a movement of a bucket is restricted by abutment of a work equipment constituted by the bucket against a stopper, whereby the bucket in a dump position is forcibly moved upward toward a tilt direction and a bucket hydraulic cylinder is pressurized by a lifting operation of a boom, wherein
control is performed to supply a pressure oil to the bucket hydraulic cylinder so as to actuate the bucket hydraulic cylinder in the tilt direction when the work equipment is being actuated in an actuation region in which the bucket is forcibly actuated in the tilt direction, or in the actuation region close thereto, when lifting the boom in a state in which the bucket is operated at a position corresponding to a stopped position or to a bucket operation direction corresponding to a dumping operation position.