US 12,467,481 B2
Hydraulic valve assembly
Thomas Wechsel, Aschheim (DE); Martin Heusser, Aschheim (DE); and Jean-Michel Sabatier, Aschheim (DE)
Assigned to HAWE Hydraulik SE, Aschheim (DE)
Filed by HAWE Hydraulik SE, Aschheim (DE)
Filed on Jul. 25, 2023, as Appl. No. 18/358,467.
Claims priority of application No. 10 2022 207 778.4 (DE), filed on Jul. 28, 2022; application No. 10 2022 207 790.3 (DE), filed on Jul. 28, 2022; and application No. 10 2022 207 791.1 (DE), filed on Jul. 28, 2022.
Prior Publication US 2024/0044344 A1, Feb. 8, 2024
Int. Cl. F15B 11/15 (2006.01)
CPC F15B 11/15 (2013.01) [F15B 2211/30515 (2013.01); F15B 2211/30595 (2013.01); F15B 2211/40507 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/7142 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A hydraulic valve assembly, comprising: a connection section; a first valve section which can be pressurized via the connection section; at least one second valve section which can be pressurized via the connection section; and a hydraulic pilot control device with a pilot valve device, the hydraulic pilot control device comprising a pilot line, a return line, a first pilot branch, and a second pilot branch, wherein the first valve section includes a first spool piston, a first spool diverter, at least one consumer port of a first type of the first valve section, and at least one consumer port of a second type of the first valve section, and wherein the second valve section includes a second spool piston, a second spool diverter, at least one consumer port of a first type of the second valve section, and at least one consumer port of a second type of the second valve section, and the first spool diverter and the second spool diverter can each be switched at least into a first spool diverter switching position and a second spool diverter switching position so that the at least one consumer port of the first type of the first valve section can be pressurized via the first spool piston and the at least one consumer port of the first type of the second valve section can be pressurized via the second spool piston when the first spool diverter and the second spool diverter are each in the first spool diverter switching position, and so that the at least one consumer port of the second type of the first valve section can be pressurized via the first spool piston and the at least one consumer port of the second type of the second valve section can be pressurized via the second spool piston when the first spool diverter and the second spool diverter are each in the second spool diverter switching position, wherein pilot pressure can be applied to the first spool diverter and the second spool diverter via the hydraulic pilot control device, wherein the pilot pressure is applied in parallel to the first spool diverter and the second spool diverter in a first switching position of the pilot valve device for switching together into the respective first spool diverter switching position, the pilot pressure is applied in parallel to the first spool diverter and the second spool diverter in a second switching position of the pilot valve device for parallel switching together into the second spool diverter switching position, wherein a pilot pressure in the first pilot branch switches the first spool diverter and the second spool diverter together into the respective first spool diverter switching position, wherein a pilot pressure in the second pilot branch switches the first spool diverter and the second spool diverter together into the respective second spool diverter switching position, wherein the pilot valve device in the first switching position applies the pilot pressure to the first pilot branch and connects the second pilot branch to the return line, and wherein the pilot valve device in the second switching position applies the pilot pressure to the second pilot branch and connects the first pilot branch to the return line.