DE19522744B4 - Electro-hydraulic control device - Google Patents
Electro-hydraulic control device Download PDFInfo
- Publication number
- DE19522744B4 DE19522744B4 DE1995122744 DE19522744A DE19522744B4 DE 19522744 B4 DE19522744 B4 DE 19522744B4 DE 1995122744 DE1995122744 DE 1995122744 DE 19522744 A DE19522744 A DE 19522744A DE 19522744 B4 DE19522744 B4 DE 19522744B4
- Authority
- DE
- Germany
- Prior art keywords
- control
- connection
- main control
- pilot
- 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.)
- Expired - Fee Related
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
- 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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
- F15B13/0433—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being pressure control valves
-
- 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
-
- 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
- F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
Abstract
Elektrohydraulische Steuervorrichtung zur Steuerung des Volumenstroms zwischen einem Motoranschluß und einem Rücklaufanschluß, mit einem in einem Gehäuse angeordneten Hauptsteuerglied, in das ein von einem Proportionalmagnet betätigbares Vorsteuerglied ragt, das zum Zwecke der Vorsteuerung den Druck in einer stirnseitig am Hauptsteuerglied liegenden Druckkammer steuert und das nach Art einer Folgesteuerung mit dem Hauptsteuerglied zusammenarbeitet, wobei das Hauptsteuerglied einen den Motoranschluß absichernden Hauptventilkegel und davon im Abstand liegende Feinsteuernuten aufweist, die mit dem Hauptventilkegel in Serie zwischen Motoranschluß und Rücklaufanschluß geschaltet sind und mit einer sich gehäusefest abstützenden Feder die das Vorsteuerglied in Richtung Ausgangsstellung belastet, dadurch gekennzeichnet, daß das Hauptsteuerglied (28) gegenüber dem Druck im Motoranschluß (13) druckausgeglichen ausgebildet ist und von einer sich gehäusefest abstützenden Druckfeder (42) in Richtung seiner Ausgangsstellung belastet ist, in der sein Hauptventilkegel (39) auf einem Ventilsitz (41) im Gehäuse (12) anliegt, daß das Vorsteuerglied (48) in die Steuerverbindung von einem Steueranschluß (15) zu der Druckkammer (35) geschaltet ist und daß die Druckkammer (35) über eine Steuerleitung (65) zum Rücklaufanschluß (14) entlastet ist, die über im Vorsteuerglied (48) angeordnete Kanäle (58, 57) und stromabwärts davon über eine im Hauptsteuerglied (28) angeordnete Drosselstelle (61) geführt ist.Electrohydraulic control device for controlling the volume flow between a motor connection and a return connection, with a main control element arranged in a housing, into which a pilot element, which can be actuated by a proportional magnet, projects, which controls the pressure in a pressure chamber located on the front side of the main control element for the purpose of pilot control, and that according to Art a sequence control cooperates with the main control element, the main control element having a main valve cone securing the engine connection and fine control grooves spaced apart therefrom, which are connected in series with the main valve cone between the engine connection and return connection and with a spring which is fixed to the housing and loads the pilot control in the direction of the starting position, characterized in that the main control member (28) is designed to be pressure-balanced with respect to the pressure in the motor connection (13) and by a compression spring which is supported on the housing (42) is loaded in the direction of its initial position, in which its main valve cone (39) rests on a valve seat (41) in the housing (12), that the pilot member (48) is in the control connection from a control connection (15) to the pressure chamber (35 ) is switched and that the pressure chamber (35) is relieved via a control line (65) to the return connection (14), which is arranged in the pilot control element (48) through channels (58, 57) and downstream thereof via a throttle point arranged in the main control element (28) (61) is performed.
Description
Die Erfindung geht aus von einer elektrohydraulischen Steuervorrichtung zur Steuerung des Volumenstroms zwischen einem Motoranschluß und einem Rücklaufanschluß nach der im Oberbegriff des Anspruchs 1 näher angegebenen Gattung.The invention is based on one electrohydraulic control device for controlling the volume flow between a motor connection and a return connection after the in the preamble of claim 1 closer specified genus.
Es ist schon eine solche elektrohydraulische Steuervorrichtung
zur Steuerung des Volumenstroms von einem hydraulischen Motor zum
Tank aus der
Ferner ist aus der
Die erfindungsgemäße elektrohydraulische Steuervorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß sie eine proportionale, feinfühlige Steuerung von Volumenströmen zum Senken einer Last ermöglicht, wobei durch geringe Leckage hohe Dichtheitsforderungen erfüllt werden und zum Antrieb des Hauptsteuerglieds eine gesondert zugeführte Steuerenergie verwendet wird. Eine Betätigung der Steuervorrichtung über die Folgesteuerung ist nur möglich, wenn ein gesonderter Zulaufanschluß für den Steuerölstrom mit Druck versorgt wird. Auf diese Weise kann die Steuervorrichtung höhere Sicherheitsanforderungen erfüllen, da ein Senken der Last nur bei eingeschalteter Steuerölversorgung möglich ist.The electrohydraulic control device according to the invention with the characterizing features of the main claim has the advantage, that she a proportional, sensitive Control of volume flows to lower a load, high leak tightness requirements are met by low leakage and a separately supplied control energy for driving the main control member is used. An actuation the control device over sequential control is only possible if a separate inlet connection for the control oil flow with Pressure is supplied. In this way, the control device higher Meet security requirements, since the load is only lowered when the control oil supply is switched on possible is.
Zudem baut die Steuervorrichtung relativ einfach und platzsparend.In addition, the control device builds relatively simple and space-saving.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen,Steuervorrichtung möglich, wobei insbesondere eine einfache, kompakte und kostengünstige Bauweise unterstützt wird. Besonders zweckmäßig für das Regelverhalten der Steuervorrichtung ist, wenn gemäß Anspruch 5 eine Dämpfung vorgesehen wird. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den übrigen Ansprüchen.By the measures listed in the subclaims are advantageous developments and improvements in the main claim specified control device possible, in particular a simple, compact and inexpensive construction supports becomes. Particularly useful for the control behavior the control device is provided if a damping according to claim 5 becomes. Further advantageous configurations result from the remaining claims.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert, wobei die einzige Figur einen Längsschnitt durch eine elektrohydraulische Steuervorrichtung in vereinfachter Darstellung zeigt.An embodiment of the invention is shown in the drawing and in the description below explained in more detail, whereby the only figure is a longitudinal section by an electro-hydraulic control device in simplified Representation shows.
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Die einzige Figur zeigt einen Längsschnitt durch
eine elektrohydraulische Steuervorrichtung
Der Motoranschluß
Die Steuervorrichtung
Das Hauptsteuerglied
Das Hauptsteuerglied
Das Hauptsteuerglied
Die Wirkungsweise der Steuereinrichtung
Wird in einer Neutralstellung eine
Last am einfach wirkenden Motor
Zum Heben einer Last am Motor
Zum Senken einer Last am Motor
Auch kann die Dichtung
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995122744 DE19522744B4 (en) | 1995-06-22 | 1995-06-22 | Electro-hydraulic control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995122744 DE19522744B4 (en) | 1995-06-22 | 1995-06-22 | Electro-hydraulic control device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19522744A1 DE19522744A1 (en) | 1997-01-02 |
DE19522744B4 true DE19522744B4 (en) | 2004-02-12 |
Family
ID=7765029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995122744 Expired - Fee Related DE19522744B4 (en) | 1995-06-22 | 1995-06-22 | Electro-hydraulic control device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19522744B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10324051A1 (en) * | 2003-05-27 | 2004-12-16 | Bosch Rexroth Ag | Pressure reducing valve |
CN113357214A (en) * | 2021-06-10 | 2021-09-07 | 涌镇液压机械(上海)有限公司 | Hydraulic proportional reversing valve |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4585206A (en) * | 1984-10-29 | 1986-04-29 | Kawasaki Jukogyo Kabushiki Kaisha | Proportional flow control valve |
DE4140604A1 (en) * | 1991-12-10 | 1993-06-17 | Bosch Gmbh Robert | CONTROL DEVICE FOR THE VOLUME FLOW OF A HYDRAULIC WORKING AGENT |
-
1995
- 1995-06-22 DE DE1995122744 patent/DE19522744B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4585206A (en) * | 1984-10-29 | 1986-04-29 | Kawasaki Jukogyo Kabushiki Kaisha | Proportional flow control valve |
DE4140604A1 (en) * | 1991-12-10 | 1993-06-17 | Bosch Gmbh Robert | CONTROL DEVICE FOR THE VOLUME FLOW OF A HYDRAULIC WORKING AGENT |
Also Published As
Publication number | Publication date |
---|---|
DE19522744A1 (en) | 1997-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licenses declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |