US 12,385,224 B2
Wheeled construction machine
Naoki Naruo, Tsukuba (JP)
Assigned to Hitachi Construction Machinery Co., Ltd., Tokyo (JP)
Appl. No. 18/849,681
Filed by Hitachi Construction Machinery Co., Ltd., Tokyo (JP)
PCT Filed Feb. 16, 2023, PCT No. PCT/JP2023/005615
§ 371(c)(1), (2) Date Sep. 23, 2024,
PCT Pub. No. WO2023/188963, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 2022-059599 (JP), filed on Mar. 31, 2022.
Prior Publication US 2025/0198122 A1, Jun. 19, 2025
Int. Cl. E02F 9/22 (2006.01); F15B 21/08 (2006.01)
CPC E02F 9/2207 (2013.01) [E02F 9/2264 (2013.01); F15B 21/087 (2013.01); E02F 9/2228 (2013.01); F15B 2211/45 (2013.01); F15B 2211/625 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/6316 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/6658 (2013.01); F15B 2211/7053 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A wheeled construction machine comprising:
a travelable vehicle body equipped with a wheel;
a work implement attached to the vehicle body;
a controller that executes control of a vibration suppression function to control a flow of a hydraulic fluid from a hydraulic cylinder that drives the work implement, thereby suppressing vibration of the hydraulic cylinder when a rotation speed of the wheel reaches a predetermined speed or higher; and
a vibration suppression instructing device that gives an instruction for enabling or disabling the control of the vibration suppression function by the controller, wherein
the controller is configured to disable the control of the vibration suppression function when the vehicle body is jacked up by the work implement, even when the vibration suppression instructing device has given an instruction for enabling the control of the vibration suppression function.