Patent ID: 7770370
Filing Date: 2010-08-10
Classification: A01D

Abstract:
1. A working vehicle comprising: a vehicle body having a frame; a plurality of wheels supporting the vehicle body; an implement supported by the frame via a link mechanism such that the implement can be raised and lowered, the implement being permitted to be lowered under its own weight; an abutting member that moves in tandem with the raising and lowering movement of the implement and has a first portion, a second portion and a laterally extending rotation shaft pivotally supported by the frame, the first and second portions disposed on the rotation shaft with a lateral space provided therebetween; a receiving piece which is swingably supported by the frame between a receiving position at which the receiving piece receives the first portion of the abutting member and a retracted position at which the receiving piece is unable to receive the first portion and configured to limit the lowering of the implement under its own weight by receiving the first portion; a first operating piece which is manually operable independently of the movement of the implement and configured to change the position of the receiving piece between the receiving position and the retracted position, wherein a lowering limiting position at which the lowering of the implement is limited by a reception of the first portion by the receiving piece is set to a vertical position that is closer to an upper limit of a range of the raising and lowering movement of the implement than to a lower limit of the range; an abutted member that is provided on the frame and makes contact with the second portion of the abutting member during the lowering of the implement; a second operating piece for changing the position of contact between the second portion and the abutted member; and a raising and lowering device for raising and lowering the implement, which is supported by the frame and has a hydraulic cylinder for rotating the rotation shaft.