公开(公告)号：WO2021141874A1

公开(公告)日：2021-07-15

申请号：PCT/US2021/012139

申请日：2021-01-05

Applicant: SUN HYDRAULICS, LLC

Inventor： ZÄHE, Bernd

IPC: F15B13/04 ,  F15B13/043 ,  F15B11/042 ,  F15B11/044 ,  F15B11/05 ,  F16K31/00 ,  F15B11/055 ,  F15B13/0402 ,  F15B13/0416 ,  F15B13/0417 ,  F15B13/0433 ,  F15B13/0435 ,  F15B13/044 ,  F15B2013/0412 ,  F15B2013/0448 ,  F15B2211/20546 ,  F15B2211/30525 ,  F15B2211/30535 ,  F15B2211/3057 ,  F15B2211/3105 ,  F15B2211/3144 ,  F15B2211/322 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/35 ,  F15B2211/355 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/5059 ,  F15B2211/6057 ,  F15B2211/761 ,  F16K11/0716 ,  F16K31/0613

Abstract: An example valve includes a first port fluidly coupled to a source of fluid, a second port fluidly coupled to an actuator, a third port fluidly coupled to a reservoir, and a fourth port configured to export a load-sense (LS) fluid signal. The valve can operate in: a neutral state, wherein fluid is allowed to flow from the second port to the third port, while the first port and the fourth port are blocked; a first actuated state, wherein fluid flow is throttled from the second port to the third port, while the first port and the fourth port remain blocked; or a second actuated state, wherein fluid flow from the second port to the third port is blocked, while fluid flow is allowed from the first port to the second port and from the second port to the fourth port.

公开(公告)号：WO2023006237A1

公开(公告)日：2023-02-02

申请号：PCT/EP2022/025024

申请日：2022-01-26

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY AS

Inventor： LOWMAN, Roger D. ,  LARISH, Chad Anthony ,  NEWBAUER, Sam

IPC: F15B11/044 ,  F15B21/047 ,  F15B11/0445 ,  F15B2211/30505 ,  F15B2211/30515 ,  F15B2211/3057 ,  F15B2211/31558 ,  F15B2211/353 ,  F15B2211/411 ,  F15B2211/41527 ,  F15B2211/426 ,  F15B2211/50545 ,  F15B2211/50581 ,  F15B2211/5059 ,  F15B2211/5153 ,  F15B2211/5159 ,  F15B2211/555 ,  F15B2211/7053 ,  F15B2211/761 ,  F15B2211/8609

Abstract: A hydraulic system can include a hydraulic actuator including a first port and a second port.; a hydraulic pump; a hydraulic reservoir; a first control valve operable to selectively control flow from the hydraulic pump to the first port; a first control valve operable to selectively control flow from, the hydraulic pump and the hydraulic reservoir to one or both of the first port and the second port; a load-holding valve positioned between the first control valve and the first port in a first fluid pathway; a first counterbalance valve located between the hydraulic reservoir and the first port in a second fluid pathway that is parallel to the first fluid pathway; and a controller for operating the hydraulic system, and including a lowering mode and/or an. actuation mode.

公开(公告)号：WO2023006238A1

公开(公告)日：2023-02-02

申请号：PCT/EP2022/025026

申请日：2022-01-26

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY AS

Inventor： LOWMAN, Roger D. ,  LARISH, Chad Anthony ,  SMITH, Stephen ,  NEWBAUER, Sam

IPC: E02F9/22 ,  F15B21/14 ,  F15B1/02 ,  F15B21/08 ,  E02F9/2207 ,  E02F9/2217 ,  E02F9/2296 ,  F15B1/021 ,  F15B21/082 ,  F15B2211/3057 ,  F15B2211/3144 ,  F15B2211/327 ,  F15B2211/625 ,  F15B2211/6313 ,  F15B2211/665 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/8613

Abstract: A hydraulic system can include a hydraulic actuator including a piston rod slidably disposed within a housing having a base-side port and a rod-side port, a hydraulic pump, a hydraulic reservoir, an accumulator, a first control valve operable to selectively control flow from the pump to the base-side port and from the base-side port to the reservoir, a second control valve operable to selectively control flow from the pump to the rod-side port and from the rod-side port to the reservoir, a third control valve operable to selectively allow flow between the base-side port and the accumulator, and a controller for operating the hydraulic system and including a ride control mode in which damping is provided to the hydraulic actuator by operation of the first, second, and third control valves.

公开(公告)号：WO2022022857A2

公开(公告)日：2022-02-03

申请号：PCT/EP2021/025285

申请日：2021-07-26

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： LOWMAN, Roger, D. ,  LARISH, Chad Anthony ,  SMITH, Stephen ,  NEWBAUER, Sam

IPC: E02F9/22 ,  F15B21/14 ,  E02F9/2207 ,  E02F9/2217 ,  F15B1/021 ,  F15B21/082 ,  F15B2211/20546 ,  F15B2211/30515 ,  F15B2211/3057 ,  F15B2211/3105 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/327 ,  F15B2211/353 ,  F15B2211/50527 ,  F15B2211/50581 ,  F15B2211/625 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6658 ,  F15B2211/7053

Abstract: A hydraulic system can include a hydraulic actuator including a piston rod slidably disposed within a housing having a base-side port and a rod-side port, a hydraulic pump, a hydraulic reservoir, an accumulator, a first control valve operable to selectively control flow from the pump to the base-side port and from the base-side port to the reservoir, a second control valve operable to selectively control flow from the pump to the rod-side port and from the rod-side port to the reservoir, a third control valve operable to selectively allow flow between the base-side port and the accumulator, and a controller for operating the hydraulic system and including a ride control mode in which damping is provided to the hydraulic actuator by operation of the first, second, and third control valves.