Patent ID: 8666609

Claim:
A work vehicle comprising: a vehicle body; a boom extending to the front or to the rear of the vehicle body; a first drive part configured to swing the boom upward and downward by an operating oil being supplied thereto; an attaching part provided to the boom to allow an implement to be attached thereto; a second drive part configured to swing the implement upward and downward by the operating oil being supplied thereto; a switching valve configured to switch between supplying the operating oil to the second drive part and supplying the operating oil to a third drive part provided in the implement; a speed-up part able to perform a speed-up operation for increasing the flow rate of the operating oil supplied to the switching valve; and a restricting part arranged near the speed-up part and configured to be brought into contact with a switching member for switching an operation of the speed-up part or with a member attached to the switching member, to thereby restrict the speed-up operation so that a speed-up of the third drive part prevented.