Title:
【発明の名称】液力式の消費器を方向及び速度に関して負荷に無関係に制御する方向制御弁
Document Type and Number:
Japanese Patent JP2001509235
Kind Code:
A
Abstract:
The invention relates to distributing valve for load-independent control of a hydraulic consumer with regard to direction and speed. Similar distributing valves known per se have a control valve (30) which can be axially displaced in a slide bore hole (11) of a valve housing (10). In a neutral position, said control valve (30) blocks off two consumer chambers (13, 15) from a feed chamber (14) and selectably connects one of the two consumer chambers (13, 15) to a feed chamber (14) and the other consumer chamber (15, 13) to a return chamber in two operating positions. In addition, two brake pistons (51, 52) are arranged in two opposite lying receiving areas (33, 34) of the control valve (30). Both pistons can be pressurized in the direction of an enlargement of the opening section of a flow path leading from one consumer chamber (13, 15) to a return chamber (12, 16) via the respective receiving area, said pistons being pressurized in the other consumer chamber (15, 13) in a direction opposite to that of a spring (53) placed in a spring chamber (12). According to the invention, a slide longitudinal bore hole (36) which can be connected to a load indicator channel (22) extends from one pressure chamber (58) on one brake piston (51, 52) to the other pressure chamber (58) on the other brake piston (51, 52), and can be connected, upon displacement of the control valve (30) from the neutral position, to one consumer chamber (13) or another consumer chamber (15) depending on the direction of displacement.
Inventors:
Armin Stavergen
Application Number:
JP52618898A
Publication Date:
July 10, 2001
Filing Date:
December 06, 1997
Export Citation:
Assignee:
Mannesmann Rexroth Actien Gezershaft
International Classes:
F15B11/05; F15B13/04; F16K11/07; F16K17/04; F16K3/26; (IPC1-7): F15B11/05; F16K3/26; F16K11/07; F16K17/04
Attorney, Agent or Firm:
Toshio Yano (3 outside)