EP0952354B1 - Eilgangschaltung für hydraulische Ölmotoren und Zylinder - Google Patents
Eilgangschaltung für hydraulische Ölmotoren und Zylinder Download PDFInfo
- Publication number
- EP0952354B1 EP0952354B1 EP99107869A EP99107869A EP0952354B1 EP 0952354 B1 EP0952354 B1 EP 0952354B1 EP 99107869 A EP99107869 A EP 99107869A EP 99107869 A EP99107869 A EP 99107869A EP 0952354 B1 EP0952354 B1 EP 0952354B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fast
- hydraulic
- approach
- cylinders
- circuit
- 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
- 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
-
- 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
- F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
Definitions
- the invention relates to a rapid traverse for hydraulic oil motors and cylinders according to the generic term of Claim 1.
- EP 0 797 027 A2 is a closed hydraulic system become known for driving a hydraulic motor, the Speed can be changed in that the Flow volume of the film motor can be changed accordingly.
- a swash plate pump is provided, which in their funding volume is changeable accordingly Swallowing volume and thus the speed of the to change the driven hydraulic motor.
- the principle of this known circuit is a changeable one hydraulic transmission, which is accordingly of a Motor is driven, which one hand hydraulic motor and on the other hand a hydraulic pump drives.
- the invention is based on the object To provide rapid traverse for such a drive, which is able to with no increased machine effort any existing circuits used to become.
- An essential feature of the invention is that in the existing hydraulic circuit consisting of the pressure branch and a rapid traverse block is switched on, which Rapid motion block the two branches (pressure branch and return branch) controlled interrupts that in this rapid traverse block from same hydraulic circuit driven oil motor available which in turn drives an oil pump, which the oil from the driven oil engine or the driven linear cylinder and directly onto the Pressure side of this driven element (rotary motor or Linear cylinder).
- the result is significant advantage that by switching on a separate rapid traverse block in the aforementioned, per se known hydraulic circuit it is now possible for the first time to operate a short circuit or bypass operation, so to speak, which consists in the fact that that of the driven Element (oil motor or linear cylinder) returning oil now no longer runs back into the tank, but that this oil now in the sense of a bypass circuit now the hydraulic driven pressure pump is supplied in the rapid traverse block and the normal pressure pump in the circuit runs continuously, so that this continuous, the already existing oil flow the additional Oil flow of the rapid traverse block is superimposed on the To achieve rapid traverse of the driven element.
- the driven Element oil motor or linear cylinder
- the invention Rapid traverse block as a separate block practically in the interruption of the normally existing hydraulic circuit used can be.
- This hydraulic circuit is in itself known manner from a spool, the Pressure connection uses a conventional pressure pump, which the pressure oil via an assigned pressure line to be driven consumer. The consumer Oil flowing through is returned via a return line fed to this spool and runs back into the tank.
- the invention therefore lies in the fact that to achieve a Rapidly an additional oil motor in the circuit which oil motor is switched on an additional oil pump drives that swallowed by the rotary motor (consumer) Volume no longer feeds directly to the tank, but instead feeds directly to the pump of the rapid traverse block. It is coming So no longer to a return flow into the tank, but to a direct short circuit on the pump of the rapid traverse block and this will make this pump available previously Volume significantly increased and the hydraulic motor as Consumers fed in the sense of a rapid traverse.
- the present invention is not based on limited the training of the consumer as a hydraulic motor; in the The meaning of the above description can of course a linear cylinder can also be used.
- the invention is not open to the arrangement of one Circuit with a pressure pump and a return in the Tank limited, but it can also be a closed one Circuit can be used.
- Such a circuit can be used especially for hydraulic Winches, used for machine tools and the like, where it comes down to a rapid traverse using simple means overlay a normal circuit.
- the rapid traverse block shown here is straightforward interchangeable, i.e. it only needs to be attached conventional hydraulic circuits of four in total Connection points and in these four connection points the Rapid traverse block can be used.
- the rapid traverse block consists essentially of two, in Hydraulic circuit opposite control valves, between which the hydraulic motor and the pump are arranged are.
- a pressure branch 5 goes up from the control slide 1 the pump 2 in the appropriate switch position of the Control spool 1 delivered pressure oil in the direction of arrow 7 is promoted, the lines 15, 16 and 23, 24, the are assigned to the rapid traverse block 32, not yet acted upon are.
- the pressure oil therefore flows through the branch point 34 further up into line 27 and flows through there further branch point 35 and continues to flow into Arrow direction 7 on the pressure branch 5 in the oil motor 10, the is driven in rotation accordingly.
- Oil engine 10 shown can also use a cylinder 11 be the one with its piston rod Movement.
- the oil motor 10 is described as a consumer and it will not mentioned more that instead the transmitter shown 11 can be used as a consumer.
- the oil flowing through the oil motor 10 arrives in the direction of the arrow 13 in the return branch 12, where it is over the branches 37, 38 flows down in the direction of arrow 13 and then over the line 23 flows to the tank 4.
- Rapid traverse block 32 which essentially consists of the Lines 15, 16, 23, 24 also consists of the Switch valves 22 and 14 and the intermediate motor 18, which mechanically or hydraulically a pump 19 drives.
- Pressure relief valves 6 and 6a are only used for protection the pump motor unit 18, 19 so that it does not, for example pressure of 200 bar. For this In this case, these valves would switch through and one corresponding bypass from the pressure branch 5 to the return branch 12 provide.
- the counterclockwise rotation is e.g. the pressure switch 8 assigned during the clockwise rotation of the Pressure switch 8a is assigned. Accordingly, the actuated electrical pressure switch 8, then this controls the Switching valves 22 and 14 and the corresponding magnets Y2, Y3, Y5 on.
- the switching valve 9, 9a is thus controlled that the line 27 is interrupted and at the Branch 34 the oil in the direction of arrow 7 in the Line 24 flows in and flows through the switching valve 22.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
- Actuator (AREA)
Description
- Figur 1:
- Schematisiert eine Hydraulikschema einer Eilgangschaltung im Ruhezustand.
- Figur 2:
- Das Hydraulikschema nach Figur 1 in Eilgangstellung
- 1
- Steuerschieber (4/3-Wege-Ventil)
- 2
- Pumpe
- 3
- Druckanschluß
- 4
- Tank
- 5
- Druckast
- 6
- Druckbegrenzungsventil 6a
- 7
- Pfeilrichtung
- 8
- Druckschalter 8a
- 9, 9a
- Schaltventil
- 10
- Ölmotor (linear oder rotativ)
- 11
- Zylinder
- 12
- Rücklaufast
- 13
- Pfeilrichtung
- 14
- Schaltventil
- 15
- Leitung
- 16
- Leitung
- 17
- Leitung
- 18
- Motor
- 19
- Pumpe
- 20
- Leitung
- 21
- Leitung
- 22
- Schaltventil
- 23
- Leitung
- 24
- Leitung
- 25,
- 25a Leitung
- 27
- Leitung
- 28
- Pfeilrichtung
- 29
- Pfeilrichtung
- 30
- Verzweigungsstelle
- 31
- Pfeilrichtung
- 32
- Eilgangblock
- 33
- Rücklauf
- 34
- Verzweigungsstelle
- 35
- Verzweigungsstelle
- 36
- Kolbenstange
- 37
- Verzweigungsstelle
- 38
- Verzweigunsstelle
- 39
- Leitung
Claims (12)
- Eilgangschaltung für hydraulische Elemente, wie Ölmotoren (10) und Zylinder (11), beinhaltend eine Druckpumpe (2), einen Druckast (5), sowie einen Rücklaufast (12), zur Förderung von Öl, wobei zwischen Druckast (5) und Rücklaufast (12) ein Eilgangblock (32) geschaltet ist, welcher die beiden Äste (5, 12) gesteuert unterbricht, dadurch gekennzeichnet, daß im Eilgangblock (32) ein Ölmotor (18) vorhanden ist, der seinerseits eine Ölpumpe (19) antreibt, welche das Öl aus dem angetriebenen Element (10, 11) im Rücklaufast (12) ansaugt und direkt auf die Druckseite dem Druckast (5) dieses angetriebenen Elementes (10, 11) wieder zuführt.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach Anspruch 1, dadurch gekennzeichnet, daß die Druckpumpe (2) kontinuierlich läuft, auch während des Betriebs des Eilgangsblockes (32).
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Eilgangblock (32) als separater Block ausgebildet ist.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß das im Druckast (5) fließende Öl zur Versorgung des dem Eilgangblock (32) zugeordneten Hydraulikmotor (18) verwendet wird.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß die Fördermenge für den Verbraucher (10, 11) im Eilgang mindestens verdoppelt wird.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß ein geschlossener oder ein offener Kreislauf verwendet wird.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß Druckast und Rücklaufast an sich bekannter Weise über einen Steuerschieber (1) geschaltet werden und daß keine zusätzliche Pumpe an der Druckseite (5) des Steuerschiebers (1) vorgesehen ist.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, daß der Eilgangblock (32) an insgesamt vier Verzweigungsstellen (34, 35, 37, 38) an herkömmliche Hydraulikkreise angeschlossen wird.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß der Eilgangblock (32) im wesentlichen aus zwei, im Hydraulikkreislauf gegenüberliegenden, Schaltventilen (14, 22) besteht, zwischen denen der Hydraulikmotor (18) und die Pumpe (19) angeordnet sind.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß Überlastsicherungen (6, 6a) für die Hochdruckpumpe (18) des Eilgangblockes (32) vorgesehen sind.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 10, dadurch gekennzeichnet, daß der Ölmotor (18) die Ölpumpe (19) mechanisch oder hydraulisch antreibt.
- Eilgangschaltung für hydraulische Ölmotoren (10) und Zylinder (11) nach einem der Ansprüche 1 - 11, dadurch gekennzeichnet, daß die Druckpumpe (2) auf einen Steuerschieber (1) arbeitet, der an den Druckast (5), sowie den Rücklaufast (12) angeschlossen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19818537 | 1998-04-24 | ||
DE19818537A DE19818537A1 (de) | 1998-04-24 | 1998-04-24 | Eilgangschaltung für hydraulische Ölmotoren und Zylinder |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0952354A2 EP0952354A2 (de) | 1999-10-27 |
EP0952354A3 EP0952354A3 (de) | 2001-03-07 |
EP0952354B1 true EP0952354B1 (de) | 2004-06-30 |
Family
ID=7865776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99107869A Expired - Lifetime EP0952354B1 (de) | 1998-04-24 | 1999-04-21 | Eilgangschaltung für hydraulische Ölmotoren und Zylinder |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0952354B1 (de) |
AT (1) | ATE270395T1 (de) |
DE (2) | DE19818537A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2825421B1 (fr) * | 2001-06-05 | 2004-08-27 | Ptc | Dispositif pour la suppression des contre-pressions dans le circuit de retour d'un systeme hydraulique |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3038312A (en) * | 1958-09-29 | 1962-06-12 | Rockwell Mfg Co | Regenerative hydraulic torque multiplication system |
SE316379B (de) * | 1965-05-20 | 1969-10-20 | Trima Ab | |
US5251705A (en) * | 1992-03-19 | 1993-10-12 | Deere & Company | Electrical trigger for quick drop valve |
DE29512061U1 (de) * | 1995-07-26 | 1995-11-16 | Kemptener Maschinenfabrik GmbH, 87437 Kempten | Doppeltwirkender Druckmittelzylinder |
JPH0972303A (ja) * | 1995-09-06 | 1997-03-18 | Tokimec Inc | 可変容量形液圧装置システム |
EP0797027A3 (de) * | 1996-02-14 | 1998-07-22 | Gottfried Keller | Hydromechanisches Getriebe |
-
1998
- 1998-04-24 DE DE19818537A patent/DE19818537A1/de not_active Withdrawn
-
1999
- 1999-04-21 AT AT99107869T patent/ATE270395T1/de not_active IP Right Cessation
- 1999-04-21 EP EP99107869A patent/EP0952354B1/de not_active Expired - Lifetime
- 1999-04-21 DE DE59909832T patent/DE59909832D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0952354A3 (de) | 2001-03-07 |
ATE270395T1 (de) | 2004-07-15 |
DE59909832D1 (de) | 2004-08-05 |
DE19818537A1 (de) | 1999-10-28 |
EP0952354A2 (de) | 1999-10-27 |
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