公开(公告)号：US11339873B2

公开(公告)日：2022-05-24

申请号：US16778650

申请日：2020-01-31

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： QingHui Yuan

IPC: F16H61/438 ,  F16H47/04 ,  F16H61/00 ,  F16H39/10 ,  F16H47/07 ,  F16H47/02 ,  F16H39/12 ,  F16H37/08

Abstract: A hydraulic mechanical transmission includes a first hydraulic unit having a first shaft and a second hydraulic unit having a second shaft. The second hydraulic unit is connected in hydraulic fluid communication with the first hydraulic unit by high and low pressure lines. At least one of the first and second hydraulic units has variable displacement. A mechanical torque transfer arrangement transfers torque between the first shaft and the rotatable component of the second hydraulic unit. One of the first and second hydraulic units operates as a hydraulic pump and the other of the first and second hydraulic units operates as a hydraulic motor.

公开(公告)号：US11536298B2

公开(公告)日：2022-12-27

申请号：US17562449

申请日：2021-12-27

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： QingHui Yuan

IPC: F15B21/00 ,  E04G21/04 ,  E02F9/22 ,  F15B13/01 ,  F15B15/20 ,  F15B20/00

Abstract: A system for damping mass-induced vibrations in a machine having a long boom or elongate member, the movement of which causes mass-induced vibration in such boom or elongate member. The system comprises at least one motion sensor operable to measure movement of such boom or elongate member resulting from mass-induced vibration, and a processing unit operable to control a first control valve spool in a pressure control mode and a second control valve spool in a flow control mode in order to adjust the hydraulic fluid flow to the load holding chamber of an actuator attached to the boom or elongate member to dampen the mass-induced vibration. The system further comprises a control manifold fluidically interposed between the actuator and control valve spools that causes the first and second control valve spools to operate, respectively, in pressure and flow control modes.