EP1036942B1 - Steueranordnung für einen Arbeitszylinder - Google Patents
Steueranordnung für einen Arbeitszylinder Download PDFInfo
- Publication number
- EP1036942B1 EP1036942B1 EP00890022A EP00890022A EP1036942B1 EP 1036942 B1 EP1036942 B1 EP 1036942B1 EP 00890022 A EP00890022 A EP 00890022A EP 00890022 A EP00890022 A EP 00890022A EP 1036942 B1 EP1036942 B1 EP 1036942B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- pressure medium
- adjustment
- cylinder
- valve
- 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.)
- Expired - Lifetime
Links
Images
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S251/00—Valves and valve actuation
- Y10S251/90—Valves with o-rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87096—Valves with separate, correlated, actuators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87217—Motor
Definitions
- the invention relates to a control arrangement for a pressure fluid-operated Working cylinder, with two separately adjustable, each with a pressure medium source and one Pressure fluid discharge on the one hand and the working cylinder on the other hand connected Control valves for the two cylinder sides, the adjusting elements of the two Control valves are housed in a common valve housing, which further also the pressure medium connections to be controlled for both cylinder sides and with them the control rooms, which interact with the control edges on the adjusting elements connecting connecting lines, and wherein the two adjusting members as Adjusting piston formed, arranged coaxially in the valve housing, and over to the outer Opposing, separate control drives are adjustable.
- 4/3-way valves for controlling double-acting pressure medium motors or working cylinders 4/3-way valves (servo or proportional valves) are usually used with which the consumer connections leading to the two cylinder sides, the Pressure medium connection and the tank or pressure medium discharge connection together to be controlled.
- the four control edges required for control are in rigid relation on a common adjusting element, for example a piston-like Control spool, which ensures in a simple manner that, for example, when pressure is applied one side of the cylinder is vented accordingly the other side of the cylinder or connected to the tank.
- a control arrangement of the type specified in the opening paragraph is US Pat. No. 4,860,792 revealed.
- the two adjusting members designed as adjusting pistons are coaxial arranged in the valve housing and over each other on the outer end faces opposite, separate control drives are adjustable, to a very limited extent would be independently adjustable, safety devices are provided which these Prevent separate adjustability and thus the separate and independent from each other Control of the downstream device, such as the two cylinder sides of Differential cylinders, make it impossible.
- the object of the present invention is to provide a control arrangement at the beginning mentioned type to improve so that the disadvantages of the known Designs are avoided and that in particular the effort with regard to individually Components to be assembled and connected are reduced, making them lighter Housing the control arrangement and simplifying assembly and maintenance is achieved, but the negative effects of uncontrolled pressure build-up Follow the guide piston of the adjustment piston in the outer front spaces pressure medium reaching the control drives is to be stopped.
- the new one Control arrangement for example, also very simply instead of the one mentioned at the beginning Arrangement with a 4/3 control valve can be used in existing applications - it is only provision for the separate actuation of the two adjustment mechanisms in the to meet common valve housing.
- constant pressures in the front spaces at the design Control drives are ensured without additional power losses and the Known directional valves avoided existing disadvantages, in which the outer Rooms on the control drives are often connected directly to the tank connection or via a Throttle with the pressure connection and a second throttle with the tank connection.
- the former has the disadvantage of poor ventilation of the control drives frontal spaces and the occurrence of pressure peaks which lead to instabilities of the regulation can lead while in the second training at large Throttle cross sections additional power losses occur and small Throttle cross sections the risk of clogging the throttle and thus an uncontrolled Pressure build-up in these rooms exists, which usually does not occur until the destruction control drives capable of withstanding maximum operating pressure.
- each adjusting piston can be in one arranged in the valve housing, preferably common to both adjusting pistons, Control bushing, which is the separate manufacture of this with the control edges of the Adjusting piston cooperating socket made of, for example, extra hardened material or also the simple replacement of this socket if worn.
- Embodiment of the invention according to which the control bush between the two Adjusting piston is opened, preferably divided, the biasing valve being in from the outside Radial direction biased elastic sealing ring over the opening, preferably over the ends of the two parts of the control bushing.
- a usual for example as a spring-loaded ball valve Executed preload valve in a leading to the pressure medium discharge or to the tank
- Providing a connecting line can be combined with this described configuration with an open or split control socket a simple design be realized, which achieved this almost constant pressure level in the rooms on the control drives to one high control stability without additional leakage losses.
- Fig.1 and 2 show schematic circuit diagrams of control arrangements for Working cylinders actuatable by pressure medium according to the state described at the beginning the technology and Figures 3 and 4 each show different versions of Control arrangements according to the present invention in a partial longitudinal section.
- the on the one hand spring-biased directional control valve 2 is operated on the other hand, for example, by means of an electromagnet, the voltage supply of this electromagnet, indicated by u, being carried out by a control unit 3 which is supplied with input signals corresponding to the pressures p A and p B and the piston travel x corresponding sensor signals.
- the 4/3-way valve 2 from FIG. 1 that is common to both cylinder sides is now replaced by two independently adjustable (control u A and u B ) 3/3-way valves 4, 5, which is very simple and effective way the possibility of independent pressurization or locking and relieving the two cylinder spaces, which, for example, to increase the load rigidity or to improve the positioning accuracy and smoothness at different loads and speeds or to reduce the negative effects of volume differences and can also be used by pressure surges and decompression shocks.
- the two are now separate adjustable, each with the pressure medium source P and the pressure medium drain T on the one hand and the working cylinder (via A and B) on the other hand connected control valves 4, 5 so formed that their adjusting members 4 ', 5' in a common valve housing 31st Are housed, which also the pressure medium connections to be controlled for both Cylinder sides and these with the, with the control edges 17, 18 on the one hand and 21, 22nd on the other hand, on the adjusting members 4 ', 5' interacting control rooms connecting connecting lines.
- the two adjusting elements 4 ', 5' are, with a structurally simple design of the Valve body and easy access to the two separate actuators what Assembly and maintenance also improved or simplified as an adjusting piston formed, arranged coaxially in the valve housing 31 and over on the outer end faces opposite, separate control drives 6, 7 adjustable.
- Each adjusting piston 4 ', 5' is arranged in a valve housing 31, here between the two adjusting pistons 4 ', 5' divided control bush (32, 33), which a simple construction and manufacture of the valve housing 31 enables.
- the outer frontal spaces 34, 35 on control drives 6, 7 are through axial bores 10, 11 in the control piston 4 ', 5' with each other and via a centrally arranged preload valve 36 with the pressure medium discharge line T connected.
- This biasing valve 36 is radial from the outside Direction of prestressed elastic sealing ring 15 over the ends of the two Control socket parts 32, 33 realized.
- the two control drives 6, 7 are, for example, electrical Proportional magnets trained and act with appropriate electrical Activation via anchor extensions 36, 37 and adjusting screws 38 on the Adjusting piston 4 ', 5' - springs 8 act in the other direction of movement, 9 which are on the one hand on the control bushing parts 32, 33 and on the other supported on transmission sleeves 39, by means of which the anchor extensions 36, 37 can be pushed back with the adjustment pistons 4 ', 5'.
- FIG. 3 It is easy to see that the overall arrangement of FIG. 3 is very small and has a compact design and essentially the conventional connections 1 corresponds - it is only a second Actuator required to perform all functions as described in Fig. 2 to be able to realize.
- the pressure port P of the directional control valve according to FIG. 3 is through the bypass channel 12 divided in the valve housing 31 and to the pressure connection 13 of the Control socket part 32 or the pressure connection 14 of the control socket part 33 guided.
- About the control edges 17 and 18 on the adjusting piston 4 'and Radial openings 19 on the control bush 32 is the consumer space 20 (Port A) connectable to the pressure port 13 or the tank port 16.
- In the currentless basic position of the proportional magnet shown in the Actuator 6 is consumer connection 20 (A) with tank connection 16 connected.
- the control piston 4 'follows shifted to the right whereby the connection of the consumer connection 20 (A) closed to the tank port 16 and the connection from the pressure port 13 to Consumer connection 20 (A) is established.
- connection B connectable to the pressure connection 14 or the tank connection.
- control bushing 40 is now a modification of FIG. 3 both adjusting pistons 4 ', 5' carried out together and undivided and from the right forth in the common valve housing 1 used.
- the pressure medium connections are changed compared to the embodiment of FIG. 3 insofar as here now the connection of the pressure medium source P in the middle and the connections for pressure medium discharge T are provided on the outside.
- the control function of the Arrangement or the possibility of separate control of the two consumer connections A, B remains unchanged compared to FIG. 3.
- the front-side anchor spaces 34, 35 are again in the middle Bores 10, 11 in the adjusting piston 4 ', 5' connected, but now one spring-loaded ball valve as a bias valve 36 in a connection of the right anchor chamber 35 is used for pressure medium discharge T. On too in this way it can advantageously be ensured that it is in rooms 34 and 35 not to uncontrolled pressure build-up and corresponding malfunctions or damage can occur.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
- Valve Housings (AREA)
- Actuator (AREA)
- Fluid-Driven Valves (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
Claims (3)
- Steueranordnung für einen druckmittelbetätigbaren Arbeitszylinder (1), mit zwei separat verstellbaren, jeweils mit einer Druckmittelquelle (P) und einer Druckmittelableitung (T) einerseits und dem Arbeitszylinder (1) andererseits verbundenen Regelventilen (4, 5) für die beiden Zylinderseiten (A, B), wobei die Verstellorgane (4', 5') der beiden Regelventile (4, 5) in einem gemeinsamen Ventilgehäuse (31) untergebracht sind, welches weiters auch die zu steuernden Druckmittelanschlüsse (A, B, P, T) für beide Zylinderseiten und die diese mit den, mit den Steuerkanten (17, 18; 21, 22) an den Verstellorganen (4', 5') zusammenwirkenden, Steuerräumen verbindenden Verbindungsleitungen aufweist, und wobei die beiden Verstellorgane (4', 5') als Verstellkolben ausgebildet, koaxial im Ventilgehäuse (31) angeordnet, und über an den äußeren Stirnseiten einander gegenüberliegende, separate Regelantriebe (6, 7) verstellbar sind, dadurch gekennzeichnet, daß die äußeren stimseitigen Räume (34, 35) an den Regelantrieben (6, 7) durch axiale Bohrungen (10, 11) in den Verstellkolben (4', 5') miteinander und über ein Vorspannventil (36) mit der Druckmittetableitung (T) verbunden sind.
- Steueranordnung nach Anspruch 1, dadurch gekennzeichnet, daß jeder Verstellkolben (4', 5') in einer im Ventilgehäuse (31) angeordneten, vorzugsweise für beide Verstellkolben (4', 5') gemeinsamen, Steuerbuchse (32, 33; 40) geführt ist.
- Steueranordnung nach Anspruch 2, dadurch gekennzeichnet, daß die Steuerbuchse (32, 33) zwischen den beiden Verstellkolben (4', 5') geöffnet, vorzugsweise geteilt, ist, wobei das Vorspannventil (36) als von außen in radialer Richtung vorgespannter elastischer Dichtring (15) über der Öffnung, vorzugsweise über den Enden der beiden Steuerbuchsenteile (32, 33), ausgeführt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0018899U AT3017U3 (de) | 1999-03-18 | 1999-03-18 | Steueranordnung für einen arbeitszylinder |
AT18899U | 1999-03-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1036942A2 EP1036942A2 (de) | 2000-09-20 |
EP1036942A3 EP1036942A3 (de) | 2003-02-12 |
EP1036942B1 true EP1036942B1 (de) | 2004-09-01 |
Family
ID=3483825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00890022A Expired - Lifetime EP1036942B1 (de) | 1999-03-18 | 2000-01-26 | Steueranordnung für einen Arbeitszylinder |
Country Status (5)
Country | Link |
---|---|
US (1) | US6561221B1 (de) |
EP (1) | EP1036942B1 (de) |
JP (1) | JP4616959B2 (de) |
AT (1) | AT3017U3 (de) |
DE (1) | DE50007579D1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10041386B4 (de) * | 2000-08-23 | 2008-08-21 | Daimler Ag | System zur Wirkungsgradoptimierung einer Ölversorgung |
DE102010009975A1 (de) * | 2010-03-03 | 2011-09-08 | Sauer-Danfoss Gmbh & Co Ohg | Verstellvorrichtung für Axialkolbenmaschinen |
US9897228B2 (en) * | 2015-11-06 | 2018-02-20 | Caterpillar Inc. | Valve having opposing right-angle actuators |
JP6815103B2 (ja) * | 2016-06-10 | 2021-01-20 | 川崎重工業株式会社 | 流量制御弁装置 |
EP3545221A1 (de) * | 2016-11-22 | 2019-10-02 | Parker-Hannificn Corporation | Extrem verschleppungsarmes magnetventil |
DE102019120863A1 (de) * | 2019-08-01 | 2021-02-04 | Atlas Copco Ias Gmbh | Verfahren zur Steuerung eines mechanischen Füge- oder Umformprozesses |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2404349A (en) * | 1944-11-29 | 1946-07-23 | Adel Prec Products Corp | Valve |
US2619121A (en) * | 1947-10-01 | 1952-11-25 | Denison Eng Co | Solenoid operated valve |
US2600746A (en) * | 1948-08-30 | 1952-06-17 | Thompson Grinder Co | Fluid pressure control valve |
US3060969A (en) * | 1960-02-24 | 1962-10-30 | Alkon Products Corp | Hydraulic valve |
US3254675A (en) * | 1963-11-19 | 1966-06-07 | Johnson Clarence | Multi-purpose solenoid-pilot valve assembly |
US3618690A (en) * | 1969-05-20 | 1971-11-09 | Caterpillar Tractor Co | Damping and air-purging means for relief valve |
US4220174A (en) * | 1978-03-29 | 1980-09-02 | Spitz Russell W | Fluid control valves |
JPS5936151B2 (ja) * | 1978-12-13 | 1984-09-01 | 株式会社昭空 | 切換弁 |
US4422475A (en) * | 1981-05-29 | 1983-12-27 | Vickers, Incorporated | Variable gain servo controlled directional valve |
US4456434A (en) * | 1982-03-01 | 1984-06-26 | Vickers, Incorporated | Power transmission |
US4457341A (en) * | 1982-03-04 | 1984-07-03 | Vickers, Incorporated | Variable pressure drop proportional motor controlled hydraulic directional valve |
DE3218527A1 (de) * | 1982-05-17 | 1983-11-17 | Kurt 4970 Bad Oeynhausen Varlemann | Selbststeuerndes hydraulisches umschalt-ventil fuer einen doppelwirkenden arbeitszylinder |
US4565219A (en) * | 1982-09-13 | 1986-01-21 | The Oilgear Japan Company | Multiple-position solenoid-operated control valve |
EP0114470B1 (de) * | 1982-12-13 | 1986-08-13 | Vickers Incorporated | Zweistufiges hydraulisches Ventil |
DE3346235A1 (de) * | 1982-12-27 | 1984-07-05 | Nippon Pneumatic Mfg | Steuergeraet fuer hydraulische zylinder |
DE3406570A1 (de) * | 1984-02-23 | 1985-09-12 | Mannesmann Rexroth GmbH, 8770 Lohr | Elektromagnet/ventil-anordnung |
DE3406794A1 (de) * | 1984-02-24 | 1985-09-05 | Mannesmann Rexroth GmbH, 8770 Lohr | Druckregelventil |
US4754780A (en) * | 1987-02-10 | 1988-07-05 | Smith Iii Robert E | Pressure balanced hydraulic coupling |
DE3708248A1 (de) * | 1987-03-13 | 1988-09-22 | Herion Werke Kg | Wegeventil |
JPS6469878A (en) * | 1987-09-10 | 1989-03-15 | Diesel Kiki Co | Solenoid proportional pressure control valve |
US5284220A (en) * | 1988-07-25 | 1994-02-08 | Atsugi Unisia Corporation | Pressure control valve assembly for hydraulic circuit and automotive rear wheel steering system utilizing the same |
DE3900949A1 (de) * | 1989-01-14 | 1990-07-19 | Bw Hydraulik Gmbh | Elektrohydraulische steuerung zum steuern eines hydraulischen antriebes |
GB9211898D0 (en) * | 1992-06-05 | 1992-07-15 | Vickers Systems Ltd | Two-stage hydraulic valves |
DE4307990A1 (de) * | 1993-03-13 | 1994-09-15 | Bosch Gmbh Robert | Hydraulisches Steuerventil |
LU88379A1 (fr) * | 1993-07-12 | 1994-04-01 | Luxembourg Patent Co | clapet pour un robinet d'une bouteille de gaz comprimé ou liquéfié et robinet pourvu d'un tel clapet |
DE4339444A1 (de) | 1993-11-19 | 1995-05-24 | Hygrama Ag | Verfahren zum Steuern der Bewegung eines Druckmittelzylinders und Druckmittelzylinder |
DE4400760C2 (de) * | 1994-01-13 | 1997-03-27 | Festo Kg | Mehrwegeventil |
DE4416285A1 (de) * | 1994-05-07 | 1995-11-09 | Bosch Gmbh Robert | Elektropneumatische Ventileinrichtung |
JPH09100922A (ja) * | 1995-10-03 | 1997-04-15 | Nippon Pisuko:Kk | 制御バルブ |
-
1999
- 1999-03-18 AT AT0018899U patent/AT3017U3/de not_active IP Right Cessation
-
2000
- 2000-01-26 DE DE50007579T patent/DE50007579D1/de not_active Expired - Lifetime
- 2000-01-26 EP EP00890022A patent/EP1036942B1/de not_active Expired - Lifetime
- 2000-03-15 US US09/525,915 patent/US6561221B1/en not_active Expired - Fee Related
- 2000-03-21 JP JP2000078937A patent/JP4616959B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AT3017U2 (de) | 1999-08-25 |
US6561221B1 (en) | 2003-05-13 |
AT3017U3 (de) | 2000-03-27 |
JP4616959B2 (ja) | 2011-01-19 |
JP2000297801A (ja) | 2000-10-24 |
EP1036942A3 (de) | 2003-02-12 |
EP1036942A2 (de) | 2000-09-20 |
DE50007579D1 (de) | 2004-10-07 |
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