EP1101953A2 - Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten - Google Patents
Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten Download PDFInfo
- Publication number
- EP1101953A2 EP1101953A2 EP00123300A EP00123300A EP1101953A2 EP 1101953 A2 EP1101953 A2 EP 1101953A2 EP 00123300 A EP00123300 A EP 00123300A EP 00123300 A EP00123300 A EP 00123300A EP 1101953 A2 EP1101953 A2 EP 1101953A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder housing
- pressure medium
- valves
- valve
- electrorheological
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/06—Use of special fluids, e.g. liquid metal; Special adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids
- F15B21/065—Use of electro- or magnetosensitive fluids, e.g. electrorheological fluid
Definitions
- the invention relates to a pressure medium motor based on electrorheological Liquids, one in a cylinder housing guided piston is provided in the cylinder housing forms two variable-volume working chambers, one Inlet hole for the electrorheological fluid with a pressure medium source (pump) is connected, one Outlet hole for the electrorheological fluid with is connected to a tank and arranged in the cylinder housing Valves based on electrorheological fluids, some have a variable-volume working chamber valve gap connecting to the inlet bore or the outlet bore have, the boundary surfaces of the valve gap designed as electrically controllable electrode surfaces are.
- Electrorheological fluids are liquids where the rheological properties depending on one electric field are controllable. As a rule, it is in electrorheological fluids to suspensions that means solid particles suspended in a carrier medium are polarizable via the electric field. Because of the engagement of electrorheological fluids as working fluid it has become possible to reduce the number of moving parts in hydraulic Systems significantly. A variety of possible applications, e.g. the use of hydraulic valves, Hydraulic cylinders, vibrators, viscosity couplings, Shock absorbers or engine mounts are in the review article "Applications of the electrorheological effect in engineering practice, Fluid mechanics Soviet research, Vol.8, No. 4, July - August 1979 ".
- a pressure medium motor is based known electrorheological fluids.
- the control the pressure medium motor is implemented via four integrated in the cylinder electrorheological valves that work as a full bridge with each other are connected.
- the electrorheological valves as annular gap valves formed by the introduced into the cylinder housing wall Bores and mandrels arranged in the bores are formed. The boundary walls are used to generate an electric field of the annular gap as electrically controllable electrode surfaces educated.
- the object of the present invention is a hydraulic motor develop with integrated valves such that at even more compact outer dimensions, higher dynamics as well high actuating forces can be achieved.
- the boundary surfaces are formed, on the one hand, by first housing sections formed on the outer circumferential surface of the cylinder housing and, on the other hand, by second housing sections which are spaced apart from one another.
- Valve gaps through boundary surfaces of the cylinder housing as well formed a sleeve concentrically surrounding the cylinder housing become.
- a pressure medium motor is realized, which has a mechanically simple structure.
- two in parallel for each valve Flat column provided. Through this training you can higher flow rates can be achieved.
- a special feature of the pressure fluid motor is its property the effect electronically on a differential cylinder to achieve a synchronous cylinder. This becomes possible due to the high dynamics of the compact pressure medium motor.
- the valves are connected as a full bridge and controlled in such a way that the pressures in the variable-volume working chambers A and B are inversely proportional to their respective Behave piston surfaces.
- the pressure medium motor 1 shown in FIGS. 1-3 exists from a cylinder housing2, into which a cylindrical Through hole 3 is introduced.
- a piston 4 with a one-sided outward Piston rod 5 guided axially.
- the piston 4 divided the cylindrical through hole 3 in two variable volume Working chambers A, B.
- the cylinder housing2 is from surrounded a sleeve 6 which is concentric with the cylinder housing 2 is arranged. Between the inner surface 7 of the Sleeve 6 and the outer circumferential surface 8 of the cylinder housing 2 This leaves an annular space 9 that extends over the entire axial length of the cylinder housing 2 extends.
- Sleeve 6 and Cylinder housing 2 are uniform over the circumference over four Distributed plastic strips 10, which are in axial Direction over the entire length of the cylinder housing 2 extend, connected to each other.
- the annular space 9 is in four of the same size Partitions 11 divided, which are sealed from each other.
- the subspaces 11 are each formed by a tubular segment element 12, which extends over the entire axial length of the cylinder housing 2 extends into two flat columns 13 divided, each parallel spaced cylindrical boundary surfaces exhibit.
- the tube segment elements 12 are each held at the end in a plastic strip 10 by the flat gaps 13 are sealed from one another.
- Four valves are thus between cylinder housing 2 and sleeve 6 based on electrorheological fluids (a1, a2, b1, b2) formed, each having two flat gaps 13.
- electrorheological fluids (a1, a2, b1, b2) formed, each having two flat gaps 13.
- a plurality of flat gaps arranged in parallel could for each Valve a plurality of flat gaps arranged in parallel be provided.
- the electrorheological valves a1, a2, b1, b2 are capacitors executed, the electrode surfaces on the one hand through the boundary surfaces of the pipe segment elements 12 and on the other hand through the inner surface of the sleeve 6 or the outer surface of the cylinder housing 2 are formed.
- the tube segment elements 12 are each one from the Pressure medium motor led out as an electrical connection serving isolated mandrel 14 with a high voltage supply connected and individually electrically controllable.
- the Cylinder housing 2 and sleeve 6 are each grounded.
- the Plastic strips 10 are used for insulation.
- the cylinder housing 2 has end parts 15, 16 provided that have a cylindrical projection 17 in the middle, which closes the cylindrical through hole 3.
- the cover parts 15, 16 have the same radial extent like the sleeve 6.
- In the cover parts 15, 16 are each two essentially semi-cylindrical chambers 18, 19 and 20, 21 introduced, which to the cylinder housing 2 and the cylinder housing 2 surrounding sleeve 6 have. Chambers 18, 19 and 20, 21 are via a radially extending separator 22, 23 separated from each other.
- the end parts 15, 16 are rotated by 90 ° arranged to each other so that the dividers 22, 23rd are aligned perpendicular to each other.
- the chamber 18 is over an axial through hole made in the cover part 15 24 connected to a pressure medium pump.
- Chamber 19 is an axial introduced into the cover part 15 Through hole 25 connected to a tank.
- Chamber 20 stands over a bore made in the cylinder housing2 26 in connection with the variable-volume working chamber A, the chamber 21 is located in the cylinder housing 2 introduced bore 27 with the variable-volume working chamber B in connection.
- the chamber 18 stands with the electrorheological valves a1 and a2 and the chamber 19 in connection with the electrorheological valves b1 and b2. Furthermore, chamber 20 is with the flat columns 13 of the Valves a1 and b2 and chamber 21 with the flat columns 13 of the Valves a2 and b1 in connection.
- FIG. 4 is a schematic representation of the circuit of the four electrorheological valves to a full represents the bridge, the functionality or control is closer described.
- the lines denote the flow channels, through which the electrorheological fluid acts as a working fluid coming from a pump P to a tank. Between the pump P and the tank T are two parallel flow branches available.
- the top branch contains connected in series the electrorheological valves a1 and b2 the lower one Flow branch the electrorheological valves a2 and b1.
- the electro-rheological valves are schematic as circular areas shown.
- the flow chamber is the variable-volume working chamber B of the pressure fluid motor 1 connected.
- the electrorheological valves a1, b1 closed by applying an electrical voltage, the is called by the electrical generated in the flat columns 13 Field, the electrorheological fluid changes its viscosity from liquid to solid.
- the pressure side of the pump delivers the electrorheological fluid then directly over the Through hole 24 in the chamber 18.
- valve a1 blocked is the electrorheological fluid through the Valve or the flat gaps 13 of the valve a2 in the chamber 21 is promoted and is then converted into volume Working chamber B pressed. This increases the pressure in the Working chamber B.
- the pressure in working chamber A remains on the other hand, at the level of the tank, since valve b2 is open is.
- the electrorheological displaced from working chamber A Liquid is passed through bore 26 into the chamber 20 pressed. Since the valve al is closed, the flows electrorheological fluid through the flat column of the valve b2 into chamber 19 and then through the through hole 25 in the tank. If the piston 4 in the direction of Working chamber B are moved, so the electrorheological Valves a2, b2 blocked and the electrorheological Valves a1, b1 de-energized and thus switched to continuity.
- the cylinder housing provided with four flats on the outer surface, which extend over the entire axial length and each have a boundary surface of a flat gap Form valve. These are planar boundaries spaced in parallel each further as electrode surfaces trained boundary surfaces assigned to the cylinder housing flanged housing sections are formed, so that flat gap valves with flat gap surfaces are created.
- magnetorheological can also be used as a pressure medium Liquid are used.
- magnetorheological Liquids are used instead of the electrode surfaces electrically controllable coil arrangements are provided.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
- Vehicle Body Suspensions (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Hierdurch kann ein hinsichtlich seiner äußeren Abmessungen kompakter Druckmittelmotor realisiert werden, mit dem eine noch höhere Dynamik erreicht wird. Aufgrund der kompakten Bauweise kann eine höhere hydraulische Steifigkeit erreicht werden. Da der Druckmittelmotor ein niedriges Gewicht aufweist ist seine dynamische Steifigkeit niedrig. Hierdurch kann er insbesondere in der Automationstechnik eingesetzt werden.
- Fig. 1:
- einen Längsschnitt durch einen erfindungsgemäßen Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten;
- Fig.2:
- einen Querschnitt Y-Z des Druckmittelmotors gemäß Figur 1;
- Fig.3:
- einen Querschnitt W-X des Druckmittelmotors gemäß Figur 1;
- Fig.4:
- eine schematische Darstellung der Ansteuerung eines erfindungsgemäßen Druckmittelmotors.
Claims (6)
- Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten, bei dem ein in einem Zylindergehäuse geführter Kolben vorgesehen ist, der in dem Zylindergehäuse zwei volumenveränderliche Arbeitskammern bildet, einer Einlaßbohrung für die elektrorheologische Flüssigkeit die mit einer Druckmittelquelle (Pumpe) in Verbindung steht, einer Auslaßbohrung für die elektrorheologische Flüssigkeit die mit einem Tank in Verbindung steht und in dem Zylindergehäuse angeordneten Ventilen auf Basis elektrorheologischer Flüssigkeiten, die einen jeweils eine volumenveränderliche Arbeitskammer mit der Einlaßbohrung oder der Auslaßbohrung verbindenen Ventilspalt aufweisen, wobei die Begrenzungsflächen des Ventilspaltes als elektrisch ansteuerbare Elektrodenflächen ausgebildet sind, dadurch gekennzeichnet, daß die Begrenzungsflächen (7,8,12) einerseits durch an der äußeren Mantelfläche des Zylindergehäuses (2) gebildeten ersten Gehäuseabschnitten und andererseits durch diesen gegenüberliegend beabstandet angeordneten zweiten Gehäuseabschnitten gebildet werden.
- Druckmittelmotor nach Anspruch 1, wobei ein Ringraum (9) durch eine konzentrisch zu dem Zylindergehäuse (2) beabstandet angeordnete Hülse (6) gebildet wird, der durch vier Kunststoffleisten (10) in vier Teilräume (11) unterteilt wird und jeder Teilraum ein Ventil (a1,a2,b1,b2) bildet, wobei die Begrenzungsflächen des Ventilspaltes jedes Ventils (a1,a2,b1,b2) durch Mantelabschnitte der äußeren Mantelfläche (8) des Zylindergehäuses (2) und durch Mantelabschnitte der inneren Mantelfläche (7) der Hülse (6) gebildet werden.
- Druckmittelmotor nach Anspruch 2, wobei die Teilräume (11) jedes Ventils (a1,a2,b1,b2) jeweils durch ein Rohrsegmentelement (12) in zwei Flachspalte (13) unterteilt wird und die Begrenzungsflächen jedes Ventils (a1,a2,b1,b2) durch die Begrenzungsflächen des Rohrsegmentelementes (12) einerseits und ein Mantelabschnitt der inneren Mantelfläche der Hülse (6) bzw. einem Mantelabschnitt der äußeren Mantelfläche des Zylindergehäuses (2) gebildet werden.
- Druckmittelmotor nach einem der vorhergehenden Ansprüche, wobei die volumenveränderlichen Arbeitskammern (A,B) jeweils über endseitig an dem Zylindergehäuse (2) angeordneten Deckelteilen (15,16) abgedichtet werden und in den Deckelteilen (15,16) Kammern (18,19,20,21) vorgesehen sind, durch die die Ventilspalte (13) der Ventile (a1,a2,b1,b2) mit der Einlaßbohrung (24) und der Auslaßbohrung (25) bzw. einer volumenveränderlichen Arbeitskammer (A,B)verbunden sind.
- Druckmittelmotor nach einem der vorhergehenden Ansprüche, wobei die Ventile (a1,a2,b1,b2) als Vollbrücke miteinander verschaltet sind.
- Druckmittelmotor nach einem der vorhergehenden Ansprüche, wobei magnetorheologische Flüssigkeit verwendet wird und die Ventile als magnetorheologische Ventile mit Spulenanordnungen zur Erzeugung eines magnetischen Feldes ausgebildet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19955959 | 1999-11-19 | ||
DE1999155959 DE19955959A1 (de) | 1999-11-19 | 1999-11-19 | Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1101953A2 true EP1101953A2 (de) | 2001-05-23 |
EP1101953A3 EP1101953A3 (de) | 2004-01-02 |
Family
ID=7929795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00123300A Withdrawn EP1101953A3 (de) | 1999-11-19 | 2000-10-27 | Druckmittelmotor auf Basis elektrorheologischer Flüssigkeiten |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1101953A3 (de) |
JP (1) | JP2001187907A (de) |
CN (1) | CN1340664A (de) |
DE (1) | DE19955959A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110562587A (zh) * | 2019-08-19 | 2019-12-13 | 姜素琴 | 一种防倾倒容器 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10124365B4 (de) * | 2001-05-18 | 2005-05-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Positionieren und Fixieren eines Objektes |
DE102004010532A1 (de) * | 2004-03-04 | 2005-12-15 | Fludicon Gmbh | Ventilansteuerung von hydraulischen Aktoren auf Basis elektrorheologischer Flüssigkeiten |
CN1318193C (zh) * | 2004-11-24 | 2007-05-30 | 东南大学 | 力反馈数据手套的力反馈装置 |
DE102005049177A1 (de) * | 2005-10-14 | 2007-04-19 | Zf Friedrichshafen Ag | Parksperrensystem |
CN103953608B (zh) * | 2014-05-09 | 2015-12-02 | 济南优柏电子科技有限公司 | 磁流体致直线往复运动结构及应用方法 |
DE102014011541B4 (de) * | 2014-08-08 | 2016-04-07 | Fludicon Gmbh | Elektrorheologischer Aktor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19735466A1 (de) | 1997-08-16 | 1999-02-18 | Schenck Ag Carl | Druckmittelmotor für elektrorheologische Flüssigkeiten |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1214998B (de) * | 1960-06-27 | 1966-04-21 | Gen Dynamics Corp | Hydraulischer Stellmotor mit laengsbeweglichem Vorschubkolben |
DE3632562A1 (de) * | 1986-09-25 | 1988-04-07 | Bosch Gmbh Robert | Zweirohr-stossdaempfer |
US4840112A (en) * | 1988-01-12 | 1989-06-20 | Ga Technologies Inc. | Combined valve/cylinder using electro-rheological fluid |
DE19717691A1 (de) * | 1997-04-26 | 1998-10-29 | Schenck Ag Carl | Aktuator auf Basis einer elektrorheologischen und/oder magnetorheologischen Flüssigkeit |
DE19820570A1 (de) * | 1998-05-08 | 1999-11-11 | Schenck Ag Carl | Schwingungsdämpfer auf Basis elektrorheologischer und/oder magnetorheologischer Flüssigkeiten |
-
1999
- 1999-11-19 DE DE1999155959 patent/DE19955959A1/de not_active Withdrawn
-
2000
- 2000-10-27 EP EP00123300A patent/EP1101953A3/de not_active Withdrawn
- 2000-10-31 CN CN 00130356 patent/CN1340664A/zh active Pending
- 2000-11-17 JP JP2000351205A patent/JP2001187907A/ja not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19735466A1 (de) | 1997-08-16 | 1999-02-18 | Schenck Ag Carl | Druckmittelmotor für elektrorheologische Flüssigkeiten |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110562587A (zh) * | 2019-08-19 | 2019-12-13 | 姜素琴 | 一种防倾倒容器 |
Also Published As
Publication number | Publication date |
---|---|
CN1340664A (zh) | 2002-03-20 |
DE19955959A1 (de) | 2001-05-23 |
EP1101953A3 (de) | 2004-01-02 |
JP2001187907A (ja) | 2001-07-10 |
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