DE102007031166A1 - Hydraulic pressure amplifier for hydraulic fluid, has switching valve connecting low pressure chambers and locking connections from another switching valve, in one switching position, to flow fluid from high pressure circuit to supply line - Google Patents
Hydraulic pressure amplifier for hydraulic fluid, has switching valve connecting low pressure chambers and locking connections from another switching valve, in one switching position, to flow fluid from high pressure circuit to supply line Download PDFInfo
- Publication number
- DE102007031166A1 DE102007031166A1 DE200710031166 DE102007031166A DE102007031166A1 DE 102007031166 A1 DE102007031166 A1 DE 102007031166A1 DE 200710031166 DE200710031166 DE 200710031166 DE 102007031166 A DE102007031166 A DE 102007031166A DE 102007031166 A1 DE102007031166 A1 DE 102007031166A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- switching valve
- low
- switching
- supply line
- 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- Withdrawn
Links
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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
- F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
- F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
-
- 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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
- F15B2211/251—High pressure control
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/51—Pressure control characterised by the positions of the valve element
- F15B2211/511—Pressure control characterised by the positions of the valve element the positions being discrete
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
- F15B2211/5152—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft einen Druckverstärker für Fluide insbesondere für Hydraulikflüssigkeiten mit einem, einen Hochdruckkolben und einen Niederdruckkolben größeren Durchmessers aufweisenden, Verstärkerkolben der mit dem Hochdruckkolben in einem Hochdruckzylinder und mit dem Niederdruckkolben in einem Niederdruckzylinder bewegbar ist, wobei der Hochdruckzylinder über ein Rückschlagventil, welches den Rückfluss aus dem Hochdruckkreis in den Hochdruckzylinder verhindert, mit einem Hochdruckkreis verbunden ist und über ein zweites Rückschlagventil, welches den Rückfluss aus dem Hochdruckzylinder in den Versorgungskreis verhindert, mit einem Versorgungskeis verbunden ist, wobei der Niederdruckzylinder mittels des Niederdruckkolbens in eine erste und eine zweite Niederdruckkammer unterteilt wird und die zweite Niederdruckkammer über ein Steuerventil in einer ersten Schaltstellung des Steuerventils mit der ersten Niederdruckammer, und in einer zweiten Schaltstellung des Steuerventils mit einem Versorgungskreis verbindbar ist und die Schaltstellungen des Steuerventils durch die Stellung des Verstärkerkolbens gesteuert sind, der abhängig von seiner Stellung den Steueranschluss des Schaltventils mit den Rücklaufkreis oder mit dem Versorgungskreis verbindet, wobei ein zweites durch den Druck in der Versorgungsleitung gesteuertes Schaltventil in seiner ersten Schaltstellung den Rücklauf des Fluids aus dem Hochdruckkreis ermöglicht und in seiner zweiten Schaltstellung den Beginn der oszillierenden Bewegung des Verstärkerkolbens und somit den Beginn der Hochdruckförderung bewirkt.The The invention relates to a pressure intensifier for fluids especially for hydraulic fluids with a, a high-pressure piston and a low-pressure piston larger Diameter having, booster piston with the High pressure piston in a high pressure cylinder and with the low pressure piston is movable in a low-pressure cylinder, wherein the high-pressure cylinder via a check valve, which provides the reflux prevents the high pressure circuit in the high pressure cylinder, with a High pressure circuit is connected and via a second check valve, which the reflux from the high pressure cylinder in the Supply circuit prevents connected with a supply key is, wherein the low-pressure cylinder by means of the low-pressure piston in a first and a second low pressure chamber is divided and the second low-pressure chamber via a control valve in one first switching position of the control valve with the first low-pressure chamber, and in a second switching position of the control valve with a Supply circuit is connectable and the switching positions of the control valve are controlled by the position of the booster piston, depending on his position the control terminal of the Switching valve with the return circuit or with the supply circuit connects, with a second by the pressure in the supply line controlled switching valve in its first switching position the return of Fluids from the high pressure circuit allows and in his second switching position the beginning of the oscillating movement of the Amplifier piston and thus the beginning of the high pressure pumping causes.
Derartige Druckverstärker dienen dazu, den Druck eines Fluid über den Druck einer Druckquelle hinaus zu verstärken.such Pressure boosters serve to increase the pressure of a fluid to increase the pressure of a pressure source addition.
Stand der TechnikState of the art
Ein
anderer Druckverstärker ist beispielsweise aus der
Die
beispielsweise aus
Aufgabe und Vorteil der ErfindungTask and advantage of the invention
Vorrichtungen zur Erhöhung des Drucks eines Fluid über den Druck einer Druckquelle hinaus werden häufig eingesetzt, wenn der von der Druckquelle erzeugte Druck für einen hohen Prozentsatz des zu steuernden Prozesses ausreichend ist, und nur für einen relativ kurzen Zeitpunkt ein erhöhter Druck benötigt wird, wie dies beispielsweise häufig für Spannvorrichtungen an Bearbeitungsmaschinen der Fall ist. Hier wird zum Verfahren des Spannzylinders nur ein relativ geringer Druck benötigt, welcher von der Druckquelle in der Regel direkt erzeugt werden kann. Zum Erreichen einer hohen Spannkraft welche ein sicheres fixieren des zu bearbeitenden Werkstückes gewährleistet, wird jedoch ein erhöhter Druck benötigt, welcher in der beschriebenen Weise vor der Vorrichtung erzeugt werden kann. Um eine möglichst geringe Bearbeitungszeit zu gewährleisten ist es erforderlich, dass die zum Spannen des Werkstückes erforderliche Zeit, welche sich in eine erste Phase, der Niederdruckphase, in welcher der Spannzylinder bis zum Kontakt mit dem Werkstück ausfährt, in welche nur ein geringer Druck erforderlich ist, und in eine zweite Phase, der Hochdruckphase, in welcher eine hohen Spannkraft erzeugt wird, wozu ein hoher Druck erforderlich ist, aufteilen lasst, möglichst gering ist.devices to increase the pressure of a fluid over the pressure a pressure source are often used when the pressure generated by the pressure source for a high Percentage of the process to be controlled is sufficient, and only for a relatively short time an increased pressure is needed, as is common for example Clamping devices on processing machines is the case. Here is for moving the clamping cylinder only a relatively low pressure needed, which of the pressure source usually directly can be generated. To achieve a high clamping force which a secure fix the workpiece to be machined ensures, however, an increased pressure needed, which in the manner described in front of the device can be generated. To minimize the processing time To ensure that it is necessary for clamping of the workpiece required time, which is in a first phase, the low-pressure phase, in which the clamping cylinder extends to contact with the workpiece, in which only a small pressure is required, and in a second Phase, the high-pressure phase, in which generates a high clamping force is, for which a high pressure is required, split, if possible is low.
Bei
bisher bekannten Vorrichtung wie beispielsweise die in
Ein weiterer Nachteil der bekannten Vorrichtung zur Erhöhung des Drucks eines Fluid über den Druck einer Druckquelle hinaus, ist die Tatsache, dass die Position des Verstärkerkolbens zum Zeitpunkt das Beginns der Hochdruckphase nicht bekannt ist, so dass vor allem bei der Verwendung der Vorrichtung in Spannvorrichtungen von Bearbeitungsmaschinen, die Zeitdauer zur Erzeugung des Hochdruckes nicht exakt vorher bestimmbar ist, was zu einer Verlängerung des Spannprozesses führen kann.One Another disadvantage of the known device for increasing the pressure of a fluid over the pressure of a pressure source addition, the fact is that the position of the booster piston at the time the start of the high-pressure phase is unknown, so especially when using the device in tensioning devices of processing machines, the length of time to produce the high pressure can not be determined exactly in advance, resulting in an extension of the clamping process can lead.
Weiterhin ist bei den bekannten Lösungen von Nachteil, dass es bei längerem Verharren in einem bestimmten Zustand insbesondere dann, wenn das Schaltventil infolge des anliegenden Steuerdruckes entgegen die Feder in seine zweite Schaltstellung gedrückt wird, infolge von Leckagen zu Bewegungen des Schaltventils kommen kann, welche dazu führen können, dass bei Umschalten des Druckverstärker von der Niederdruckphase in die Hochdruckphase Probleme auftreten. Da diese Leckagen von mehreren Faktoren wie beispielsweise den im Druckverstärker vorhandenen Spalten, der Viskosität des Fluids und des anliegenden Drucks abhängig sind, ist das beschriebene Problem nur schwer einschätzbar, da es zum einen von der Fertigungsstreuung der einzelnen Druckverstärker und zum anderen vom jeweiligen Einsatzfall abhängig ist.Farther is in the known solutions of disadvantage that it is at prolonged persistence in a particular state in particular then when the switching valve due to the applied control pressure pressed against the spring in its second switching position will come due to leaks to movements of the switching valve can, which can lead to when switching the pressure booster from the low pressure phase to the high pressure phase Problems occur. Because these leaks are caused by several factors for example, the columns present in the pressure intensifier, the viscosity of the fluid and the applied pressure dependent the problem described is difficult to assess, on the one hand there is the production spread of the individual pressure intensifiers and on the other hand depending on the particular application.
Der Erfindung mit den Kennzeichen des ersten Hauptanspruches liegt die Aufgabe zu Grunde, den Druck eines Fluid über den Druck einer Druckquelle hinaus zu erhöhen, und die Nachtteile der vorstehend aufgeführten Lösungen zu vermeiden, indem der Verstärkerkolben erste nach Überschreiten einer ersten Druckschwelle, deren Höhe bei ca. 90% des von der Druckquelle erzeugbaren Drucks liegen kann, von der Niederdruckphase in die Hochdruckphase umschaltet. Bei Unterschreiten einer zweiten Druckschwelle welche geringer ist als die erste Druckschwelle erfolgt das Umschalten von der Hochdruckphase in die Niederdruckphase und der Verstärkerkolben führt in seine definierte Ausgangslage zurück, wodurch sich der Verstärkerkolben zu Beginn der Hochdruckphase in seiner Ausgangslage befindet, was dazu führt, das der eigentliche Spannvorgang zeitlich exakt vorher bestimmbar ist.Of the Invention with the characteristics of the first main claim is the Task underlying the pressure of a fluid over the pressure to increase a pressure source, and the night parts avoid the solutions listed above by the booster piston first after exceeding a first pressure threshold, the height at about 90% of the Pressure source can be generated pressure from the low pressure phase switched to the high pressure phase. When falling below a second pressure threshold which is less than the first threshold pressure switching occurs from the high pressure phase to the low pressure phase and the intensifier piston returns to its defined starting position, causing the booster piston at the beginning of the high pressure phase is in its starting position, which leads to the actual clamping operation can be determined exactly in time.
Ein weiterer Vorteil der Erfindung mit den Kennzeichen des ersten Hauptanspruches ist, dass auch nach sehr langer Standzeit es aufgrund von Leckagen, welche dazu führen, dass sich das Schaltventil in einer nicht definierten Stellung befindet, nicht zu Funktionsbeeinträchtigungen kommen kann.One Another advantage of the invention with the characteristics of the first main claim is that even after a very long life it is due to leaks, which cause the switching valve in a not defined position, not to functional impairments can come.
Zeichnungendrawings
Die Erfindung wird nachfolgend in Ausführungsbeispielen anhand der zugehörigen Zeichnung näher erläutert. Es zeigt:The Invention will be described below in embodiments explained in more detail in the accompanying drawings. It shows:
Beschreibung der AusführungsbeispieleDescription of the embodiments
Die
in
Die
Hochdruckkammer
Die
Arbeitsweise der beschriebenen Vorrichtung kann in zwei Phasen unterteilt
werden, wobei bei der ersten Phase, der Niederdruckphase, der Druck
im Hochdruckkreis
Durch
Umschalten des elektrisch betätigten Schaltventils
In
dieser Phase gelangt Fluid direkt über die Versorgungsleitung
Steigt
der Druck im Hochdruckkreis
Durch
Umschalten des elektrisch betätigten Schaltventils
- 11
- Gehäusecasing
- 22
- NiederdruckzylinderLow-pressure cylinder
- 2a2a
- erste Niederdruckkammerfirst Low-pressure chamber
- 2b2 B
- zweite Niederdruckkammersecond Low-pressure chamber
- 33
- HochdruckzylinderHigh pressure cylinder
- 3a3a
- HochdruckkammerHigh-pressure chamber
- 44
- Verstärkerkolbenintensifier piston
- 55
- NiederdruckkolbenLow-pressure piston
- 66
- HochdruckkolbenHigh pressure piston
- 77
- Kolbenstangepiston rod
- 88th
- RücklaufleitungReturn line
- 8a8a
- RücklaufanschlussReturn connection
- 8b8b
- RücklauföffnungReturn port
- 99
- Versorgungsleitungsupply line
- 9a9a
- Versorgungsanschlusssupply terminal
- 9b9b
- VersorgungsöffnungTreatment opening
- 1010
- HochdruckleitungHigh-pressure line
- 10a10a
- HochdruckanschlussHigh pressure port
- 10b10b
- HochdrucköffnungHigh pressure port
- 1111
- Verbindungsleitungconnecting line
- 11a11a
- Verbindungsöffnungconnecting opening
- 1212
- Verbindungsleitungconnecting line
- 1313
- erstes Schaltventilfirst switching valve
- 1414
- Druckfedercompression spring
- 1515
- Steuerleitungcontrol line
- 15a15a
- Steueröffnungcontrol port
- 1616
- zweites Schaltventilsecond switching valve
- 16a16a
- Wirkflächeeffective area
- 1717
- Druckfedercompression spring
- 1818
- Steuerleitungcontrol line
- 1919
- Rückschlagventilcheck valve
- 2020
- Rückschlagventilcheck valve
- 2121
- Verbindungsleitungconnecting line
- 21a21a
- Verbindungsöffnungconnecting opening
- 2222
- Verbindungsleitungconnecting line
- 2323
- Druckquellepressure source
- 2424
- Vorratsbehälterreservoir
- 2525
- Rückschlagventilcheck valve
- 2626
- Verbindungsleitungconnecting line
- 2727
- Steuerleitungcontrol line
- 2828
- Schaltventilswitching valve
- 2929
- Druckfedercompression spring
- 3030
- elektrisch betätigtes Schaltventilelectrical operated switching valve
- 3131
- Verbindungsleitungconnecting line
- 3232
- Verbindungsleitungconnecting line
- 3333
- Zylindercylinder
- 3434
- Druckfedercompression spring
- 3535
- HochdruckkreisHigh pressure circuit
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 324182 A1 [0003] - DE 3241882 A1 [0003]
- - DE 19633258 C1 [0004, 0005, 0007] - DE 19633258 C1 [0004, 0005, 0007]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710031166 DE102007031166A1 (en) | 2007-07-04 | 2007-07-04 | Hydraulic pressure amplifier for hydraulic fluid, has switching valve connecting low pressure chambers and locking connections from another switching valve, in one switching position, to flow fluid from high pressure circuit to supply line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710031166 DE102007031166A1 (en) | 2007-07-04 | 2007-07-04 | Hydraulic pressure amplifier for hydraulic fluid, has switching valve connecting low pressure chambers and locking connections from another switching valve, in one switching position, to flow fluid from high pressure circuit to supply line |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007031166A1 true DE102007031166A1 (en) | 2009-01-08 |
Family
ID=40092408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710031166 Withdrawn DE102007031166A1 (en) | 2007-07-04 | 2007-07-04 | Hydraulic pressure amplifier for hydraulic fluid, has switching valve connecting low pressure chambers and locking connections from another switching valve, in one switching position, to flow fluid from high pressure circuit to supply line |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007031166A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2491252A1 (en) * | 2009-10-20 | 2012-08-29 | Mikko Junttila | Pressure transformation method and device for its implementation |
GB2498725A (en) * | 2012-01-24 | 2013-07-31 | Allspeeds Ltd | An improved hydraulic intensifier circuit for use in the actuation of a double-acting hydraulically powered tool |
CN103452933A (en) * | 2013-08-15 | 2013-12-18 | 常熟通润汽车修理设备有限公司 | Valve body structure for manually adjusting fast speed or slow speed of oil pumping |
EP2784331A1 (en) * | 2013-03-25 | 2014-10-01 | miniBOOSTER HYDRAULICS A/S | Hydraulic system |
EP3012462A1 (en) * | 2014-10-03 | 2016-04-27 | Severn Glocon Limited | Actuator arrangement |
US10774847B2 (en) | 2017-03-03 | 2020-09-15 | Pistonpower Aps | Pressure amplifier |
US10895269B2 (en) | 2017-03-03 | 2021-01-19 | Pistonpower Aps | Double acting hydraulic pressure intensifier |
US10920796B2 (en) | 2017-03-03 | 2021-02-16 | Pistonpower Aps | Hydraulic pressure intensifier |
US11060532B2 (en) | 2017-03-03 | 2021-07-13 | Pistonpower Aps | Pressure amplifier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3241821A1 (en) | 1982-11-11 | 1984-05-17 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for converters |
DE19633258C1 (en) | 1996-08-17 | 1997-08-28 | Iversen Hydraulics Aps | Pressure-booster particularly for hydraulic fluid |
-
2007
- 2007-07-04 DE DE200710031166 patent/DE102007031166A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3241821A1 (en) | 1982-11-11 | 1984-05-17 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for converters |
DE19633258C1 (en) | 1996-08-17 | 1997-08-28 | Iversen Hydraulics Aps | Pressure-booster particularly for hydraulic fluid |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2491252A4 (en) * | 2009-10-20 | 2014-03-26 | Mikko Junttila | Pressure transformation method and device for its implementation |
EP2491252A1 (en) * | 2009-10-20 | 2012-08-29 | Mikko Junttila | Pressure transformation method and device for its implementation |
GB2498725A (en) * | 2012-01-24 | 2013-07-31 | Allspeeds Ltd | An improved hydraulic intensifier circuit for use in the actuation of a double-acting hydraulically powered tool |
GB2498725B (en) * | 2012-01-24 | 2018-05-02 | Allspeeds Holdings Ltd | Improvements to hydraulic intensifier circuits |
EP3904699A1 (en) * | 2013-03-25 | 2021-11-03 | miniBOOSTER HYDRAULICS A/S | Hydraulic system |
EP2784331A1 (en) * | 2013-03-25 | 2014-10-01 | miniBOOSTER HYDRAULICS A/S | Hydraulic system |
US10337535B2 (en) | 2013-03-25 | 2019-07-02 | Minibooster Hydraulics A/S | Hydraulic system |
CN103452933A (en) * | 2013-08-15 | 2013-12-18 | 常熟通润汽车修理设备有限公司 | Valve body structure for manually adjusting fast speed or slow speed of oil pumping |
CN103452933B (en) * | 2013-08-15 | 2015-06-17 | 常熟通润汽车修理设备有限公司 | Valve body structure for manually adjusting fast speed or slow speed of oil pumping |
EP3012462A1 (en) * | 2014-10-03 | 2016-04-27 | Severn Glocon Limited | Actuator arrangement |
US10895269B2 (en) | 2017-03-03 | 2021-01-19 | Pistonpower Aps | Double acting hydraulic pressure intensifier |
US10920796B2 (en) | 2017-03-03 | 2021-02-16 | Pistonpower Aps | Hydraulic pressure intensifier |
US11060532B2 (en) | 2017-03-03 | 2021-07-13 | Pistonpower Aps | Pressure amplifier |
US10774847B2 (en) | 2017-03-03 | 2020-09-15 | Pistonpower Aps | Pressure amplifier |
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