公开(公告)号：US12188493B2

公开(公告)日：2025-01-07

申请号：US17999809

申请日：2021-05-27

Applicant: Danfoss Power Solutions Inc.

Inventor： Aaron Darnell ,  Zhekang Du ,  Simon Nielsen

IPC: F15B11/08 ,  F15B13/02 ,  F15B13/042 ,  F15B13/044

Abstract: A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.

公开(公告)号：US20230213031A1

公开(公告)日：2023-07-06

申请号：US18000782

申请日：2021-06-09

Applicant: Danfoss Power Solutions Inc.

Inventor： Aaron Darnell ,  Zhekang Du ,  Simon Nielsen

IPC: F04B49/22 ,  B66F7/06 ,  B66F7/08 ,  F04B17/03 ,  F04B23/02 ,  F15B11/05 ,  F15B15/18

CPC classification number: F04B49/22 ,  B66F7/065 ,  B66F7/08 ,  F04B17/03 ,  F04B23/02 ,  F15B11/05 ,  F15B15/18 ,  F15B2211/20515 ,  F15B2211/20538 ,  F15B2211/30505 ,  F15B2211/30515 ,  F15B2211/413 ,  F15B2211/41581 ,  F15B2211/426 ,  F15B2211/46 ,  F15B2211/465 ,  F15B2211/50536 ,  F15B2211/528 ,  F15B2211/6313 ,  F15B2211/6346 ,  F15B2211/6654 ,  F15B2211/7052 ,  F15B2211/75 ,  F15B2211/761 ,  F15B2211/8633

Abstract: A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.

公开(公告)号：US12188467B2

公开(公告)日：2025-01-07

申请号：US18000782

申请日：2021-06-09

Applicant: Danfoss Power Solutions Inc.

Inventor： Aaron Darnell ,  Zhekang Du ,  Simon Nielsen

IPC: B66F7/06 ,  B66F7/08 ,  F04B17/03 ,  F04B23/02 ,  F04B49/22 ,  F15B11/05 ,  F15B15/18

Abstract: A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.

公开(公告)号：US20230175531A1

公开(公告)日：2023-06-08

申请号：US17999809

申请日：2021-05-27

Applicant: Danfoss Power Solutions Inc.

Inventor： Aaron Darnell ,  Zhekang Du ,  Simon Nielsen

IPC: F15B15/20

CPC classification number: F15B15/20

Abstract: A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.