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US 12,351,234 B2Granted
Crawler-type work machine
AssigneeKomatsu Ltd.
InventorsYoshitaka Kikuchi, Hiroaki Takeshima, Takeshi Yoshikawa
Life of this patent
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Abstract
A bulldozer includes a control unit for controlling left and right steering clutches and left and right steering brakes, thereby executing a turning control of the vehicle. The control unit switches between a clutch control and a brake control on the basis of a differential between an actual turning radius and a target turning radius.
Claims8
A work machine comprising:
- an engine;
- left and right crawler belts;
- left and right drive wheels configured to drive the left and right crawler belts;
- a power transmission device configured to transmit power of the engine to the left and right drive wheels;
- left and right steering clutches respectively disposed between the power transmission device and the left and right drive wheels, the left and right steering clutches being configured to transmit or block transmission of the power;
- left and right steering brakes respectively disposed between the left and right steering clutches and the left and right drive wheels, the left and right steering brakes being configured to brake rotation of the left and right drive wheels;
- and
- a control unit configured to execute a turning control of the work machine by controlling the left and right steering clutches and the left and right steering brakes,
- the control unit being configured to switch between a clutch control and a brake control in accordance with a differential between an actual turning radius and a target turning radius, or a differential between an actual bearing and a target bearing,
- the actual turning radius being calculated based on output rotation speeds of the left and right steering brakes.
7 more elements
A work machine comprising:
- an engine;
- left and right crawler belts;
- left and right drive wheels configured to drive the left and right crawler belts;
- a power transmission device configured to transmit power of the engine to the left and right drive wheels;
- left and right steering clutches configured to respectively transmit or block the power transmitted from the power transmission device to the left and right drive wheels;
- left and right steering brakes configured to respectively brake rotation of the left and right drive wheels;
- and
- a control unit configured to execute a turning control of the work machine by controlling the left and right steering clutches and the left and right steering brakes,
- the control unit being configured to switch between a clutch control and a brake control in accordance with a differential between an actual turning radius and a target turning radius, or a differential between an actual bearing and a target bearing,
- the actual turning radius being calculated based on output rotation speeds of the left and right steering brakes.
7 more elements
Dependencies are inferred from the claim text.