公开(公告)号：US10072396B2

公开(公告)日：2018-09-11

申请号：US15113486

申请日：2015-01-27

Applicant: KYB Corporation

Inventor： Nobuyoshi Yoshida ,  Ikuo Inagaki

IPC: E02F9/22 ,  F15B11/17 ,  F15B11/00 ,  F15B11/16 ,  F15B13/02 ,  F15B13/06 ,  E02F3/32

CPC classification number: E02F9/2225 ,  E02F3/32 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2239 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/00 ,  F15B11/16 ,  F15B11/17 ,  F15B13/022 ,  F15B13/06 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/36 ,  F15B2211/41554 ,  F15B2211/426 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/6652 ,  F15B2211/71 ,  F15B2211/7142

Abstract: A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to be switched by a switch signal when any one of a first operation valve and a second operation valve is switched so as to allow a first neutral passage and a second neutral passage to communicate with each other; a neutral cut valve configured to be switched by the switch signal so as to block communication between a tank and one of the first neutral passage and the second neutral passage for the first operation valve or the second operation valve that is not switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate thereof when the switch signal is inputted from any one of the first operation valve and the second operation valve.

公开(公告)号：US10273983B2

公开(公告)日：2019-04-30

申请号：US15032908

申请日：2015-01-27

Applicant: KYB Corporation

Inventor： Nobuyoshi Yoshida ,  Ikuo Inagaki

IPC: F15B11/10 ,  E02F9/22 ,  F15B11/17 ,  F15B13/02 ,  E02F3/32

Abstract: A working machine control system includes a split flow type fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port, and a lower pressure selection circuit configured to select and communicate with a working fluid of lower pressure among a working fluid on the downstream of a first operation valve of a first neutral passage in a first circuit system to which a working fluid discharged from the first discharge port is supplied, and a working fluid on the downstream of a second operation valve of a second neutral passage in a second circuit system to which a working fluid discharged from the second discharge port is supplied. The fluid pressure pump is adjusted in such a manner that the lower the pressure of the working fluid selected by the lower pressure selection circuit is, the more a discharge flow rate is increased.

公开(公告)号：US10208457B2

公开(公告)日：2019-02-19

申请号：US15113071

申请日：2015-01-27

Applicant: KYB Corporation

Inventor： Nobuyoshi Yoshida ,  Ikuo Inagaki

IPC: F15B11/17 ,  E02F9/22 ,  F15B1/04 ,  F15B13/04 ,  F15B13/043 ,  E02F3/32

Abstract: A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to allow, when one of a first operation valve and a second operation valve is switched, the first discharge port or the second discharge port for one of the first operation valve and the second operation valve that is not switched to communicate with a first neutral passage or a second neutral passage for the other of the first operation valve and the second operation valve that is switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate of the fluid pressure pump in a case where a switch signal is inputted from any one of the first operation valve and the second operation valve.