公开(公告)号：US20200378409A1

公开(公告)日：2020-12-03

申请号：US16970715

申请日：2019-02-07

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Peter BRUCK ,  Frank SCHULZ ,  Christian STAUCH ,  Jan LÜBBERT

IPC: F15B13/04 ,  F15B11/044

Abstract: A valve device having an inlet port (ZA) of an inlet side for supplying a hydraulic consumer with hydraulic fluid, wherein said hydraulic consumer can be connected to the inlet port (ZA), having an outlet port (AA) of an outlet side for discharging pressurized fluid from the connectable consumer, wherein, depending on the direction of actuation of this consumer, the inlet side becomes the outlet side and the outlet side becomes the inlet side, having a pressure supply port (P), and having a return port (T), is characterized in that a pressure regulating device is acting on the respective inlet side and a volume flow regulating device is acting on the respective outlet side.

公开(公告)号：US20230182706A1

公开(公告)日：2023-06-15

申请号：US17925389

申请日：2021-05-07

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Michael SCHEIDT ,  Frank SCHULZ ,  Christian STAUCH ,  Timo RINGLE

IPC: B60T13/68 ,  B60T15/02 ,  B60T17/22 ,  F15B13/04

CPC classification number: B60T13/683 ,  B60T15/027 ,  B60T17/22 ,  F15B13/0405 ,  F15B2211/665 ,  F15B2211/6313 ,  F15B2211/30525

Abstract: A system for braking a displacement-controlled drive system (10), which can be driven by means of an inflow pressure and an outflow pressure at an inflow end and an outflow end thereof, respectively, for a motion, characterized in that by means of an electro-proportional adjustment of at least one valve element (26, 28, 126, 128) an outflow volume flow of the drive system (10) is controlled such that the outflow pressure is decoupled from the motion of the drive system and can be freely preset and coupled to the inflow pressure, which can in that way be lowered to the extent necessary for the motion of the drive system (10).

公开(公告)号：US20210317846A1

公开(公告)日：2021-10-14

申请号：US17267554

申请日：2019-07-30

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Peter BRUCK ,  Christian STAUCH

IPC: F15B1/033

Abstract: A system for charging and discharging at least one hydraulic accumulator (10), which can be connected to a valve control device (12), wherein the valve control device (12) comprises at least one logic valve (14), is characterized in that a shuttle valve (16) and a switching valve (18) are also provided and the valves (14, 16, 18) are interconnected such that the hydraulically actuatable switching valve (18) compares the accumulator pressure (pA) to a minimum accumulator pressure (pA0) that can be adjusted via the control pressure setting of this switching valve (18).