Crawler-type work machine
AssigneeKomatsu Ltd.
InventorsNaoya Akiyama, Takeshi Yoshikawa, Hiroaki Takeshima
Life of this patent
Estimating the term…
Abstract
The bulldozer has a right first oil channel, a right second oil channel, and a right third oil channel. The right first oil channel guides a portion of the lubricating oil discharged by a hydraulic pump to a right steering brake. The right second first oil channel guides a portion of the lubricating oil discharged by the hydraulic pump to a right planetary gear mechanism. The right third oil channel guides at least a portion of the lubricating oil that has passed through the right planetary gear mechanism to a right steering brake. At least a portion of the planetary gear mechanism is disposed further inside than the right steering brake in a radial direction perpendicular to the center axis of an input shaft.
Claims4
A crawler-type work machine comprising:
- an engine;
- a transmission configured to transmit power from the engine;
- an input shaft arranged to receive power transmitted from the transmission;
- a planetary gear mechanism disposed between the input shaft and an output shaft;
- a steering clutch configured to switch between transmitting and blocking a rotational force from the input shaft to the output shaft by the planetary gear mechanism;
- a steering brake configured to brake a rotation of the output shaft;
- a hydraulic pump configured to discharge a lubricating oil;
- a first oil channel configured to guide a portion of the lubricating oil discharged by the hydraulic pump to the steering brake;
- a second oil channel configured to guide a portion of the lubricating oil discharged by the hydraulic pump to the planetary gear mechanism;
- a third oil channel configured to guide at least a portion of the lubricating oil that has passed through the planetary gear mechanism to the steering brake;
- a fourth oil channel configured to guide a portion of the lubricating oil discharged by the hydraulic pump to the steering clutch;
- and
- a fifth oil channel configured to guide at least a portion of the lubricating oil that has passed through the steering clutch to the steering brake,
- at least a portion of the planetary gear mechanism being disposed further inside than the steering brake in a radial direction perpendicular to a center axis of the input shaft.
Dependencies are inferred from the claim text.