Work vehicle
AssigneeKomatsu Ltd.
InventorsYuita Takenaka, Masanobu Nakabayashi, Masanori Ikari
Life of this patent
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Abstract
An articulated work vehicle includes a hydraulic actuator, a control valve, a joystick lever, and a first link mechanism. A front frame is linked to a rear frame. The hydraulic actuator is configured to be driven by hydraulic pressure and configured to change a steering angle of the front frame with respect to the rear frame. The control valve is configured to control flow of fluid supplied to the hydraulic actuator. The joystick lever is disposed in a cab provided on the rear frame. The joystick lever is configured to be operated by an operator. The first link mechanism is disposed below the cab. The first link mechanism is configured to transmit an operation of the joystick lever to the control valve.
Claims10
An articulated work vehicle in which a front frame is linked to a rear frame, the work vehicle comprising:
- a hydraulic actuator configured to be driven by hydraulic pressure and configured to change a steering angle of the front frame with respect to the rear frame;
- a pilot valve configured to control flow of fluid supplied to the hydraulic actuator, the pilot valve being disposed on the front frame or at a center of articulation of the work vehicle;
- a joystick lever disposed in a cab provided on the rear frame, the joystick lever being configured to be operated by an operator;
- a first link mechanism disposed below the cab, the first link mechanism being configured to transmit an operation of the joystick lever to the pilot valve;
- and
- a steering valve that is disposed on the front frame and configured to adjust a flow of fluid supplied to the hydraulic actuator based on a pilot pressure inputted from the pilot valve,
- the pilot valve being configured to control the flow of fluid supplied from the steering valve to the hydraulic actuator by adjusting the pilot pressure.
Dependencies are inferred from the claim text.