Title:
デジタル液圧制御装置
Document Type and Number:
Japanese Patent JP2012528279
Kind Code:
A
Abstract:
A digital hydraulic controller has at least two rows of valve elements: one can connect a supply line to a controller output, the other can connect the controller output to an outlet line. The valve elements of each row are connected in parallel and are switchable individually or simultaneously in different combinations with each other and have different flow cross sections. The valve element with the smallest flow cross section is present twice in the row. A system unit has a differential cylinder and a digital hydraulic controller with four rows of valve elements, two of which are, with their common controller output, connected to the one pressure chamber of the differential cylinder, while the other two rows of valve elements are, with their common controller output, connected to the other pressure chamber of the differential cylinder. The differential cylinder can be used as a precisely adjustable linear actuator.
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Inventors:
Ikonen, Alto
Suomi, aero
Hopponen, Ville
Suomi, aero
Hopponen, Ville
Application Number:
JP2012512272A
Publication Date:
November 12, 2012
Filing Date:
April 13, 2010
Export Citation:
Assignee:
Metso Paper Inc.
International Classes:
F15B9/08; F15B11/22; D21F7/00
Domestic Patent References:
| JP2006506538A | 2006-02-23 | |||
| JPH04145201A | 1992-05-19 | |||
| JPS53122085A | 1978-10-25 | |||
| JPS5829643A | 1983-02-21 | |||
| JPS58187602A | 1983-11-01 | |||
| JPS5899503A | 1983-06-13 | |||
| JPS60132102A | 1985-07-15 | |||
| JPH05106608A | 1993-04-27 | |||
| JPH02130472U | 1990-10-26 | |||
| JPH02150471U | 1990-12-26 | |||
| JPH02309070A | 1990-12-25 |
Foreign References:
| US20090114284A1 | 2009-05-07 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Kawamura Masahiro
Shinsuke Onuki
Tadashige Ito
Kawamura Masahiro