DE102017201062A1 - Hydraulic control arrangement - Google Patents
Hydraulic control arrangement Download PDFInfo
- Publication number
- DE102017201062A1 DE102017201062A1 DE102017201062.2A DE102017201062A DE102017201062A1 DE 102017201062 A1 DE102017201062 A1 DE 102017201062A1 DE 102017201062 A DE102017201062 A DE 102017201062A DE 102017201062 A1 DE102017201062 A1 DE 102017201062A1
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic motor
- hydraulic
- control arrangement
- control
- pressure
- 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- Withdrawn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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- 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
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
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- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control 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
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7058—Rotary output members
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- 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
- F15B2211/76—Control of force or torque of the output member
- F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy
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- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Die Erfindung betrifft eine hydraulische Steueranordnung zur Steuerung des von einem hydraulischen Verbraucher ablaufenden Volumenstroms mit einem im Ablauffluidpfad angeordneten hydrostatischen Hydromotor.Um möglichst viel Energie rückgewinnen zu können, ist vorgesehen, dass im Ablauffluidpfad in Serie zu dem Hydromotor eine Blende angeordnet ist, dass der Hydromotor in seinem Schluckvolumen verstellbar ist und dass der Hydromotor in seinem Schluckvolumen in Abhängigkeit von dem Druckabfall über die Blende derart verstellbar ist, dass der Druckabfall über die Blende konstant.The invention relates to a hydraulic control arrangement for controlling the volume flow flowing from a hydraulic consumer with a hydrostatic motor arranged in the drain fluid path. In order to recover as much energy as possible, it is provided that a diaphragm is arranged in the drain fluid path in series with the hydraulic motor, that the hydraulic motor is adjustable in its displacement and that the hydraulic motor in its displacement in dependence on the pressure drop across the aperture is adjustable so that the pressure drop across the aperture constant.
Description
Die Erfindung betrifft eine hydraulische Steueranordnung zur Steuerung des von einem hydraulischen Verbraucher ablaufenden Volumenstroms mit einem im Ablauffluidpfad angeordneten hydrostatischen Hydromotor.The invention relates to a hydraulic control arrangement for controlling the volume flow proceeding from a hydraulic consumer with a hydrostatic hydraulic motor arranged in the drain fluid path.
Eine derartige hydraulische Steueranordnung ist aus der
Der Erfindung liegt die Aufgabe zugrunde, eine hydraulische Steueranordnung zur Steuerung des von einem hydraulischen Verbraucher ablaufenden Volumenstroms mit einem im Ablauffluidpfad angeordneten hydrostatischen Hydromotor zu schaffen, bei der ein höherer Anteil Energie zurückgewonnen werden kann.The invention has for its object to provide a hydraulic control arrangement for controlling the running of a hydraulic consumer volume flow with a arranged in the drain fluid path hydrostatic hydraulic motor, in which a higher proportion of energy can be recovered.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass im Ablauffluidpfad in Serie zu dem Hydromotor eine Blende angeordnet ist, dass der Hydromotor in seinem Schluckvolumen verstellbar ist und dass der Hydromotor in seinem Schluckvolumen in Abhängigkeit von dem Druckabfall über die Blende derart verstellbar ist, dass der Druckabfall über die Blende konstant ist.This object is achieved in that a diaphragm is arranged in the drain fluid path in series with the hydraulic motor, that the hydraulic motor is adjustable in its displacement and that the hydraulic motor is adjustable in its displacement in dependence on the pressure drop across the aperture such that the pressure drop is constant over the aperture.
Der Druckabfall über die Blende ist ein Maß für den tatsächlichen fließenden Medienstrom. Dieser Druckabfall wird für die Einstellung des Schluckvolumens des verstellbaren Hydromotors herangezogen. Das Schluckvolumen wird also so eingestellt, dass letztlich der Druckabfall über die Blende gleich bleibt und somit auch der fließende Medienstrom. Dabei wird das sich eventuell ändernde und dann aktuell tatsächlich zur Verfügung stehende Stützmoment des Hydromotors innerhalb der möglichen Grenzen ebenso entsprechend ausgeregelt, so dass der Medienstrom entsprechend der Einstellung konstant gehalten wird.The pressure drop across the orifice is a measure of the actual flowing media flow. This pressure drop is used for adjusting the absorption volume of the adjustable hydraulic motor. The sip volume is thus adjusted so that ultimately the pressure drop across the orifice remains the same, and thus also the flowing media flow. The possibly changing and then currently actually available support moment of the hydraulic motor within the possible limits is also adjusted accordingly, so that the media flow is kept constant according to the setting.
Vorteilhafte Ausgestaltungen einer erfindungsgemäßen hydraulischen Steueranordnung finden sich in den Unteransprüchen.Advantageous embodiments of a hydraulic control arrangement according to the invention can be found in the subclaims.
Die Blende ist vorteilhafterweise stromauf des Hydromotors angeordnet, kann aber auch stromab des Hydromotors angeordnet sein.The diaphragm is advantageously arranged upstream of the hydraulic motor, but may also be arranged downstream of the hydraulic motor.
Der Hydromotor weist bevorzugt eine Verstelleinrichtung mit einem Regelventil mit einem Regelkolben auf, der im Sinne einer Verringerung des Schluckvolumens von dem Druck stromauf der Blende und im Sinne einer Vergrößerung des Schluckvolumens von dem Druck stromab der Blende und von einer Zusatzkraft beaufschlagt wird. Die Zusatzkraft wird vorteilhafterweise von einer vorgespannten Feder erzeugt, die den Regelkolben beaufschlagt.The hydraulic motor preferably has an adjusting device with a control valve with a control piston, which is acted upon in the sense of reducing the absorption volume of the pressure upstream of the diaphragm and in the sense of increasing the absorption volume of the pressure downstream of the diaphragm and an additional force. The additional force is advantageously generated by a preloaded spring which acts on the control piston.
Der geregelte Medienstrom wird bei konstant gehaltenem Druckabfall über die Blende durch den Durchflussquerschnitt der Blende bestimmt. Damit kann der Medienstrom durch das Vorsehen einer veränderlichen Blende einstellbar gemacht werden. Zum Beispiel kann die Blende ein Proportional-Drosselventil sein.The regulated media flow is determined by the flow area of the orifice at a constant pressure drop across the orifice. Thus, the media stream can be made adjustable by providing a variable aperture. For example, the orifice may be a proportional throttle valve.
Ein Ausführungsbeispiel einer erfindungsgemäßen hydraulischen Steueranordnung ist in der Zeichnung dargestellt. Anhand der einzigen Figur dieser Zeichnung, die ein Schaltbild eines Ablauffluidpfades mit Blende und verstellbarem Hydromotor zeigt, wird die Erfindung nun näher erläutert.An embodiment of a hydraulic control arrangement according to the invention is shown in the drawing. With reference to the single figure of this drawing, which shows a circuit diagram of a drain fluid path with aperture and adjustable hydraulic motor, the invention will now be explained in more detail.
Ein hydrostatischer Hydromotor
Zur Verstellung des Schluckvolumens weist der Hydromotor
In einem statischen Zustand befindet sich der Regelkolben
Wird nun der Medienstrom aus irgendeinem Grund größer, so wird der Druckabfall über die Blende
Wird der Medienstrom aus irgendeinem Grund kleiner, so wird der Druckabfall über die Blende
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Hydromotorhydraulic motor
- 1111
- Blendecover
- 1212
- AblauffluidpfadDrain fluid path
- 1313
- Tanktank
- 1414
- Stellzylinderactuating cylinder
- 1515
- Stellkolbenactuating piston
- 1616
- Stellkammersetting chamber
- 1717
- Druckfedercompression spring
- 2020
- Regelventilcontrol valve
- 2121
- Regelkolbencontrol piston
- 2222
- Regelfedercontrol spring
- PP
- Druckanschlusspressure connection
- TT
- Tankanschlusstank connection
- AA
- StellanschlussStella final
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- US 3512072 [0002]US 3512072 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017201062.2A DE102017201062A1 (en) | 2017-01-24 | 2017-01-24 | Hydraulic control arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017201062.2A DE102017201062A1 (en) | 2017-01-24 | 2017-01-24 | Hydraulic control arrangement |
Publications (1)
Publication Number | Publication Date |
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DE102017201062A1 true DE102017201062A1 (en) | 2018-07-26 |
Family
ID=62812971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102017201062.2A Withdrawn DE102017201062A1 (en) | 2017-01-24 | 2017-01-24 | Hydraulic control arrangement |
Country Status (1)
Country | Link |
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DE (1) | DE102017201062A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3512072A (en) | 1967-11-13 | 1970-05-12 | Allis Chalmers Mfg Co | Elevated load potential energy recovery in an electric truck |
-
2017
- 2017-01-24 DE DE102017201062.2A patent/DE102017201062A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3512072A (en) | 1967-11-13 | 1970-05-12 | Allis Chalmers Mfg Co | Elevated load potential energy recovery in an electric truck |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |