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EP1628019B1 - Vane actuator with a pressure reducing valve - Google Patents

Vane actuator with a pressure reducing valve Download PDF

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Publication number
EP1628019B1
EP1628019B1 EP20050017252 EP05017252A EP1628019B1 EP 1628019 B1 EP1628019 B1 EP 1628019B1 EP 20050017252 EP20050017252 EP 20050017252 EP 05017252 A EP05017252 A EP 05017252A EP 1628019 B1 EP1628019 B1 EP 1628019B1
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EP
European Patent Office
Prior art keywords
working chambers
pressure medium
cylinder
motor shaft
motor
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
Application number
EP20050017252
Other languages
German (de)
French (fr)
Other versions
EP1628019A3 (en
EP1628019A2 (en
Inventor
Rainer Beilner
Matthias Reuss
Stephan Schiffler
Alfred Wirth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
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Publication of EP1628019A3 publication Critical patent/EP1628019A3/en
Application granted granted Critical
Publication of EP1628019B1 publication Critical patent/EP1628019B1/en
Anticipated expiration legal-status Critical
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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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
    • 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
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston

Definitions

  • the invention relates to a swivel motor according to the preamble of patent claim 1.
  • the DE 196 13 769 C2 describes a dual-circuit pressure medium system for active chassis control using a slew motor.
  • the swing motor is for example from the DE 44 42 223 C2 known and consists of a cylinder and axially extending ribs. Inside the cylinder, a motor shaft with wings is rotatably mounted parallel to the ribs. End cover closes the pivot motor, so that the motor shaft forms working chambers together with the cylinder, each adjacent working chambers is connected to a respective other of the existing pressure medium connections.
  • a composite system within the swing motor serves to supply pressure medium between the respective working chambers.
  • a pressure relief valve which is arranged functionally between the pressure supply and a switching valve.
  • a further pressure medium line within the vehicle is necessary, which can represent a potential leakage point.
  • US 2,556,648 a swing motor having an adjustable pressure relief valve in a wing of a motor shaft, which is closed in normal operation.
  • Object of the present invention is to further develop such a pivot motor, which can absorb the said peak pressures permanently. According to the invention, the object is solved by the features of patent claim 1.
  • the great advantage is that at the same time all working chambers are connected to each other via a single pressure relief valve.
  • a constructive possibility is that the pressure medium composite system is formed by at least two transverse bores within the motor shaft and between these transverse bores, the at least one flow connection is executed.
  • a flow connection can be carried out particularly advantageously in the central axis of the motor shaft.
  • the Fig. 1 shows in conjunction with Fig. 2 a swivel motor 1 in longitudinal section whose basic structure is also assumed in the following figures.
  • the swivel motor 1 comprises a cylinder 3, on whose inner diameter axially extending ribs 5 are executed. Inside the cylinder 3, a motor shaft 7 is rotatably mounted. On the motor shaft wings 9 are arranged, which extend parallel to the ribs 5. End is the cylinder 3 of lids 11; 13 closed.
  • the motor shaft with its wings and the cylinder with its ribs together with the covers working chambers 15; 17, which are separated by disc seals 19 in the wings and ribs.
  • a pressure relief valve 36 is used, which can connect a working chamber 15 with the pressure medium composite system, transverse bore 31, an adjacent working chamber 17.
  • the advantage of this embodiment is that the flow connection 37 utilizes the pressure medium composite system for the function of the pressure relief valve. It makes sense each of the work spaces 15; 17 with the corresponding transverse bores 29; 31 connect via a pressure relief valve 36.
  • the Fig. 4 shows a solution in which the pressure relief valve 36 is arranged with its flow connection 37 between the transverse bores 29, 31.
  • a stepped blind hole opening 55 is executed, the end of which forms the flow connection 37.
  • the transverse bores 29; 31 intersect in the projection in the central axis of the motor shaft, so that there the flow connection 37 is made meaningful.
  • a flow connection at this point of the slewing motor is only change, which exerts no influence on the mechanical strength of the motor shaft.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Description

Die Erfindung betrifft einen Schwenkmotor gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a swivel motor according to the preamble of patent claim 1.

Die DE 196 13 769 C2 beschreibt ein Zweikreisdruckmediumsystem für eine aktive Fahrwerksregelung unter Verwendung eines Schwenkmotors. Der Schwenkmotor ist beispielsweise aus der DE 44 42 223 C2 bekannt und besteht aus einem Zylinder und in Axialrichtung verlaufenden Rippen. Innerhalb des Zylinders ist eine Motorwelle mit Flügeln parallel zu den Rippen drehbeweglich gelagert. Endseitige Deckel verschließen den Schwenkmotor, so dass die Motorwelle zusammen mit dem Zylinder Arbeitskammern bildet, wobei jeweils benachbarte Arbeitskammern mit jeweils einem anderen der vorhandenen Druckmediumanschlüsse verbunden ist. Ein Verbundsystem innerhalb des Schwenkmotors dient der Druckmediumversorgung zwischen den entsprechenden Arbeitskammern.The DE 196 13 769 C2 describes a dual-circuit pressure medium system for active chassis control using a slew motor. The swing motor is for example from the DE 44 42 223 C2 known and consists of a cylinder and axially extending ribs. Inside the cylinder, a motor shaft with wings is rotatably mounted parallel to the ribs. End cover closes the pivot motor, so that the motor shaft forms working chambers together with the cylinder, each adjacent working chambers is connected to a respective other of the existing pressure medium connections. A composite system within the swing motor serves to supply pressure medium between the respective working chambers.

Infolge einer Druckversorgung übt der Schwenkmotors auf den geteilten Stabilisator im Fahrwerk eine Verdrehbewegung aus, die dafür sorgt, dass der Fahrzeugaufbau nur eine begrenzte Wankbewegung ausführt. Dabei treten Spitzendrücke von ca. 180 bar auf. Diese Spitzendrücke können noch übertroffen werden, wenn bei aktiviertem Schwenkmotor eine Einfederungsbewegung des Rades stattfindet.As a result of a pressure supply of the swing motor exerts on the split stabilizer in the chassis a twisting movement, which ensures that the vehicle body performs only a limited roll motion. Peak pressures of about 180 bar occur. These peak pressures can be exceeded even if, with the swing motor activated, a jounce movement of the wheel takes place.

In der DE 196 13 769 C2 wird innerhalb des Druckmediumsystems ein Druckbegrenzungsventil verwendet, das funktional zwischen der Druckversorgung und einem Schaltventil angeordnet ist. Damit ist eine weitere Druckmediumleitung innerhalb des Fahrzeugs notwendig, die eine potentielle Leckagestelle darstellen kann.In the DE 196 13 769 C2 is used within the pressure medium system, a pressure relief valve, which is arranged functionally between the pressure supply and a switching valve. Thus, a further pressure medium line within the vehicle is necessary, which can represent a potential leakage point.

Aus der DE 70 12 963 U ist eine Vorrichtung zur Vermeidung von Druckdifferenzen in beiderseits eines Kolbens vorhandenen Zylinderräumen von Hydraulik- und Pneumatikzylindern bekannt. Im Kolben ist eine Ventilanordnung ausgeführt, die eine Überlastsicherung für den Zylinder bildet.From the DE 70 12 963 U a device for preventing pressure differences in both sides of a piston existing cylinder chambers of hydraulic and pneumatic cylinders is known. In the piston, a valve assembly is designed which forms an overload protection for the cylinder.

Des Weiteren offenbart die US 2,556,648 einen Schwenkmotor, der in einem Flügel einer Motorwelle ein einstellbares Druckbegrenzungsventil aufweist, das im Normalbetrieb geschlossen ist.Furthermore, the US 2,556,648 a swing motor having an adjustable pressure relief valve in a wing of a motor shaft, which is closed in normal operation.

Aufgabe der vorliegenden Erfindung ist es einen Schwenkmotor derart weiter zu entwickeln, der die genannten Spitzendrücke dauerhaft aufnehmen kann. Erfindungsgemäß wird die Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst.Object of the present invention is to further develop such a pivot motor, which can absorb the said peak pressures permanently. According to the invention, the object is solved by the features of patent claim 1.

Unabhängig von der funktionalen Ausgestaltung des Druckversorgungssystems des Schwenkmotors kann dieser auch Spitzendrücke überstehen, wobei durch die kurze Anbindung eine sehr schnelle Reaktionszeit des Druckbegrenzungsventils vorliegt.Regardless of the functional design of the pressure supply system of the swivel motor, this can also withstand peak pressures, with a very fast reaction time of the pressure relief valve is present due to the short connection.

Der große Vorteil besteht darin, dass zeitgleich alle Arbeitskammern über ein einziges Druckbegrenzungsventil miteinander verbunden sind.The great advantage is that at the same time all working chambers are connected to each other via a single pressure relief valve.

Eine konstruktive Möglichkeit besteht darin, dass das Druckmittelverbundsystem von mindestens zwei Querbohrungen innerhalb der Motorwelle gebildet wird und zwischen diesen Querbohrungen die mindestens eine Strömungsverbindung ausgeführt ist. Eine Strömungsverbindung kann besonders vorteilhaft in der Mittelachse der Motorwelle ausgeführt sein.A constructive possibility is that the pressure medium composite system is formed by at least two transverse bores within the motor shaft and between these transverse bores, the at least one flow connection is executed. A flow connection can be carried out particularly advantageously in the central axis of the motor shaft.

Anhand der folgenden Figurenbeschreibung wird die Erfindung näher erläutert. Es zeigt:

Fig. 1
Schwenkmotor im Längsschnitt
Fig. 2
Schwenkmotor nach Fig. 1 im Querschnitt
Fig. 3
Druckbegrenzungsventil zwischen Verbundsystemen der Arbeitskammern
Fig. 4
Druckbegrenzungsventil zwischen einem Arbeitskammer und einem Verbundsystem einer benachbarten Arbeitskammer
The invention will be explained in more detail with reference to the following description of the figures. It shows:
Fig. 1
Swivel motor in longitudinal section
Fig. 2
Swing motor after Fig. 1 in cross section
Fig. 3
Pressure relief valve between composite systems of the working chambers
Fig. 4
Pressure relief valve between a working chamber and a composite system of an adjacent working chamber

Die Fig. 1 zeigt in Verbindung mit Fig. 2 einen Schwenkmotor 1 im Längsschnitt dessen prinzipieller Aufbau auch bei den nachfolgenden Figuren vorausgesetzt wird. Der Schwenkmotor 1 umfasst einen Zylinder 3, an dessen Innendurchmesser axial verlaufende Rippen 5 ausgeführt sind. Innerhalb des Zylinders 3 ist eine Motorwelle 7 drehbeweglich gelagert. Auf der Motorwelle sind Flügel 9 angeordnet, die sich parallel zu den Rippen 5 erstrecken. Endseitige wird der Zylinder 3 von Deckeln 11; 13 verschlossen. Die Motorwelle mit ihren Flügeln und der Zylinder mit seinen Rippen bilden zusammen mit den Deckeln Arbeitskammern 15; 17, die durch Scheibendichtungen 19 in den Flügeln und Rippen voneinander getrennt sind. Des Weiteren sind in Ringräumen 21; 23 der Deckel 11; 13 Wellendichtungen 25; 27 gekammert, die einen Austritt von Druckmedium aus den Arbeitskammern 15; 17 verhindern. Jeweils zwischen den Arbeitskammern 15 und 17 besteht ein Verbundsystem aus Querbohrungen 29; 31 in der Motorwelle 7. Ein erster Druckmediumanschluss 33 versorgt über die Querbohrung 29 die Arbeitskammern 15 und ein zweiter Druckmediumanschluss 35 erfüllt diese Funktion über die Querbohrung 31 für die Arbeitskammern 17. In den jeweils miteinander verbundenen Arbeitskammern herrscht ein gleiches Druckniveau. Durch Zu- oder Abfluss von Druckmedium über die Druckmediumanschlüsse 33; 35 übt der Schwenkmotor ein Drehmoment aus, das z. B. zur Verstellung eines geteilten Stabilisators innerhalb eines Fahrwerks für ein Kraftfahrzeug genutzt wird.The Fig. 1 shows in conjunction with Fig. 2 a swivel motor 1 in longitudinal section whose basic structure is also assumed in the following figures. The swivel motor 1 comprises a cylinder 3, on whose inner diameter axially extending ribs 5 are executed. Inside the cylinder 3, a motor shaft 7 is rotatably mounted. On the motor shaft wings 9 are arranged, which extend parallel to the ribs 5. End is the cylinder 3 of lids 11; 13 closed. The motor shaft with its wings and the cylinder with its ribs together with the covers working chambers 15; 17, which are separated by disc seals 19 in the wings and ribs. Furthermore, in annular spaces 21; 23, the lid 11; 13 shaft seals 25; 27 chambered, the outlet of pressure medium from the working chambers 15; 17 prevent. Between the working chambers 15 and 17 there is a composite system of transverse bores 29; 31 in the motor shaft 7. A first pressure medium connection 33 supplies via the transverse bore 29, the working chambers 15 and a second pressure medium connection 35 fulfills this function via the transverse bore 31 for the working chambers 17. In the respectively interconnected working chambers prevails an equal pressure level. By inflow or outflow of pressure medium via the pressure medium connections 33; 35, the swivel motor exerts a torque that z. B. is used for adjusting a split stabilizer within a chassis for a motor vehicle.

In der Fig. 3 kommt ein Druckbegrenzungsventil 36 zur Anwendung, das eine Arbeitskammer 15 mit dem Druckmittelverbundsystem, Querbohrung 31, einer benachbarten Arbeitskammer 17 verbinden kann. Der Vorteil dieser Ausgestaltung besteht darin, dass die Strömungsverbindung 37 das Druckmittelverbundsystem für die Funktion des Druckbegrenzungsventils ausnutzt. Es ist sinnvoll jeden der Arbeitsräume 15; 17 mit den entsprechenden Querbohrungen 29; 31 über ein Druckbegrenzungsventil 36 anzuschließen.In the Fig. 3 a pressure relief valve 36 is used, which can connect a working chamber 15 with the pressure medium composite system, transverse bore 31, an adjacent working chamber 17. The advantage of this embodiment is that the flow connection 37 utilizes the pressure medium composite system for the function of the pressure relief valve. It makes sense each of the work spaces 15; 17 with the corresponding transverse bores 29; 31 connect via a pressure relief valve 36.

Die Fig. 4 zeigt eine Lösung, bei der das Druckbegrenzungsventil 36 mit seiner Strömungsverbindung 37 zwischen den Querbohrungen 29, 31 angeordnet ist. Innerhalb der Motorwelle 7 ist eine gestufte Sacklochöffnung 55 ausgeführt, deren Ende die Strömungsverbindung 37 bildet. Die Querbohrungen 29; 31 schneiden sich in der Projektion in der Mittelachse der Motorwelle, so dass dort die Strömungsverbindung 37 sinnvoll ausgeführt wird. Eine Strömungsverbindung an dieser Stelle des Schwenkmotors stellt nur Änderung dar, die keinen Einfluss auf die mechanische Festigkeit der Motorwelle ausübt.The Fig. 4 shows a solution in which the pressure relief valve 36 is arranged with its flow connection 37 between the transverse bores 29, 31. Within the motor shaft 7, a stepped blind hole opening 55 is executed, the end of which forms the flow connection 37. The transverse bores 29; 31 intersect in the projection in the central axis of the motor shaft, so that there the flow connection 37 is made meaningful. A flow connection at this point of the slewing motor is only change, which exerts no influence on the mechanical strength of the motor shaft.

Claims (2)

  1. Swivel motor, comprising a cylinder (3) with ribs (5) running axially on the inner diameter, said cylinder being closed off at the end sides by two covers (11, 13), comprising a motor shaft (7) with vanes (9) which have the same axial extent as the ribs (5) of the cylinder (3), wherein the vanes (9) of the motor shaft (7) and the ribs (5) of the cylinder (3), together with the cylinder (3), the covers (11, 13) and the motor shaft (7), form individual working chambers (15, 17), comprising a first and a second pressure medium port (33, 35) for two working chambers (15, 17) separated in each case by a rib, comprising a connection system (29, 31) between the working chambers, said connection system connecting working chambers at least in a paired fashion, wherein the arrangement of the connected working chambers is such that the working chambers (15) assigned to the first pressure medium port (33) alternate with those connected to the second pressure medium port (35),
    characterized
    in that, between at least two working chambers (15; 17) which are connected to different pressure medium ports (33; 35), at least one pressure-limiting valve (36) is arranged in a flow connection (37) within the swivel motor (1), wherein the pressure-limiting valve (36) controls the flow connection (37) between the pressure medium connection systems (29; 31; 57) of the working chambers (15; 17).
  2. Swivel motor according to Claim 1,
    characterized
    in that the pressure medium connection system (29; 31) is formed by at least two transverse bores within the motor shaft (7), and the at least one flow connection (37) is formed between said transverse bores (29; 31).
EP20050017252 2004-08-16 2005-08-09 Vane actuator with a pressure reducing valve Expired - Lifetime EP1628019B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410039767 DE102004039767A1 (en) 2004-08-16 2004-08-16 Swivel motor with a pressure relief valve

Publications (3)

Publication Number Publication Date
EP1628019A2 EP1628019A2 (en) 2006-02-22
EP1628019A3 EP1628019A3 (en) 2011-10-19
EP1628019B1 true EP1628019B1 (en) 2013-06-12

Family

ID=35355093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050017252 Expired - Lifetime EP1628019B1 (en) 2004-08-16 2005-08-09 Vane actuator with a pressure reducing valve

Country Status (2)

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EP (1) EP1628019B1 (en)
DE (1) DE102004039767A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007005839A1 (en) 2007-02-01 2008-08-07 Zf Friedrichshafen Ag Pressure medium actuated unit
DE102007009592A1 (en) 2007-02-26 2008-08-28 Zf Friedrichshafen Ag Aggregate, in particular swing motor
DE102007041610B4 (en) 2007-09-03 2009-07-23 Zf Friedrichshafen Ag Aggregate, in particular swing motor
DE112009000245A5 (en) * 2008-03-01 2011-01-20 Ixetic Hückeswagen Gmbh Swing motor housing
DE102008030361A1 (en) 2008-06-26 2009-12-31 Kinshofer Gmbh Torque motor for active turning torque shaft of roll stabilization system of motor vehicle, has two shaft parts, where one of parts forms crankshaft that is overhung at front side and ends freely at oppositely lying front side
DE102011078936A1 (en) 2011-07-11 2013-01-17 Zf Friedrichshafen Ag Oscillating motor for motor vehicle chassis, has working chambers that are arranged such that pressure medium ports are connected together by connection device
DE102013000703A1 (en) 2013-01-17 2014-07-17 Zf Friedrichshafen Ag Pressure medium operated swing motor has connecting device that is made of open channel, which is opened at deactivated swing motor and is reduced in its effective cross-section at defined tilt angle
US11047506B2 (en) 2013-08-29 2021-06-29 Aventics Corporation Valve assembly and method of cooling
US10072773B2 (en) 2013-08-29 2018-09-11 Aventics Corporation Valve assembly and method of cooling
WO2015031587A1 (en) 2013-08-29 2015-03-05 Llc Vector Horizon Technologies Electro-hydraulic actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556648A (en) 1948-05-17 1951-06-12 Gorsuch Harold Impeller vane for hydraulic motors
DE7012963U (en) 1970-04-09 1970-07-30 J P Sauer & Sohn Maschb Gmbh DEVICE TO AVOID INADMISSIBLE PRESSURE DIFFERENCES IN PRESSURE MEDIUM CYLINDERS.
GB2145798B (en) * 1983-09-01 1987-06-17 Fichtel & Sachs Ag Volume compensation in hydraulic rotary-vane dampers
DE4442223C2 (en) 1994-11-26 1996-09-12 Fichtel & Sachs Ag Swing motor for a split stabilizer
US5735540A (en) 1995-04-08 1998-04-07 Fichtel & Sachs Ag Dual-circuit hydraulic system for an active vehicle suspension control system

Also Published As

Publication number Publication date
EP1628019A3 (en) 2011-10-19
DE102004039767A1 (en) 2006-03-09
EP1628019A2 (en) 2006-02-22

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