Work vehicle

A work vehicle comprising:

• a vehicle body;
• a plurality of traveling devices driven for traveling;
• a plurality of vehicle body supporting portions for supporting the plurality of traveling devices with allowing changes in height positions thereof relative to the vehicle body independently;
• a plurality of hydraulic motors for driving the plurality of traveling devices respectively;
• a plurality of hydraulic cylinders capable of changing postures of the plurality of vehicle body support portions respectively;
• a first hydraulic pump for feeding pressure oil to the plurality of hydraulic motors;
• and
• a second hydraulic pump for feeding pressure oil to the plurality of hydraulic cylinders,
• wherein the first hydraulic pump is driven by an engine, and the second hydraulic pump is driven by an electric motor.

A work vehicle comprising:

• a vehicle body;
• a plurality of traveling devices driven for traveling, the traveling devices being provided on front and rear sides on each of right and left sides of the vehicle body;
• a plurality of articulated link mechanisms having a plurality of links pivotally coupled to each other to provide two or more joints and configured to independently support the traveling devices to the vehicle body with allowing lifting/lowering of the traveling devices independently relative to the vehicle body;
• and
• a plurality of hydraulic cylinders capable of changing respective postures of the plurality of links included in the articulated link mechanisms,
• wherein each of the plurality of hydraulic cylinders includes:
• a first hydraulic cylinder capable of changing a pivotal posture of a first link relative to the vehicle body and a second hydraulic cylinder capable of changing a pivotal posture of a second link relative to the first link,
• wherein a cylinder tube side of the first hydraulic cylinder is pivotally coupled to a coupled portion on the side of the vehicle body, and a piston rod side of the first hydraulic cylinder is pivotally coupled to a coupled portion on the side of the first link, and
• wherein a cylinder tube side of the second hydraulic cylinder is pivotally coupled to a coupled portion of the first link on the side of the vehicle body, and a piston rod side of the second hydraulic cylinder is pivotally coupled to a coupled portion of the first link on the opposite side to the vehicle body.