US 12,276,079 B2
Crawler-type work machine
Takeshi Yoshikawa, Tokyo (JP); Hiroaki Takeshima, Tokyo (JP); Naoya Akiyama, Tokyo (JP); Shinichi Otaka, Tokyo (JP); Kazushi Nakata, Tokyo (JP); and Osamu Yatsuda, Tokyo (JP)
Assigned to KOMATSU LTD., Tokyo (JP)
Appl. No. 18/710,308
Filed by KOMATSU LTD., Tokyo (JP)
PCT Filed Dec. 27, 2022, PCT No. PCT/JP2022/048256
§ 371(c)(1), (2) Date May 15, 2024,
PCT Pub. No. WO2023/149141, PCT Pub. Date Aug. 10, 2023.
Claims priority of application No. 2022-014810 (JP), filed on Feb. 2, 2022.
Prior Publication US 2025/0012043 A1, Jan. 9, 2025
Int. Cl. E02F 3/04 (2006.01); E02F 3/84 (2006.01); E02F 9/02 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); F15B 13/06 (2006.01); F15B 15/18 (2006.01); E02F 3/76 (2006.01)
CPC E02F 3/84 (2013.01) [E02F 9/02 (2013.01); E02F 9/2004 (2013.01); E02F 9/2203 (2013.01); E02F 9/225 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01); F15B 13/06 (2013.01); F15B 15/18 (2013.01); E02F 3/7609 (2013.01); E02F 3/844 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A crawler-type work machine comprising:
left and right steering brakes configured to brake left and right output shafts;
a turning motor configured to produce a rotation speed difference between the left and right output shafts;
work implement cylinders configured to drive a work implement attached to a vehicle body;
a hydraulic pressure supply unit configured to supply hydraulic fluid to the turning motor and the work implement cylinders; and
a controller configured to control the hydraulic pressure supply unit,
the controller being configured to execute a hydraulic fluid amount control in order to reduce the hydraulic fluid amount supplied from the hydraulic pressure supply unit to the turning motor when the work implement cylinders are driven while the turning motor is rotating.