EP0766009B1 - Einrichtung zur Steuerung eines hydraulischen Motors - Google Patents
Einrichtung zur Steuerung eines hydraulischen Motors Download PDFInfo
- Publication number
- EP0766009B1 EP0766009B1 EP96112086A EP96112086A EP0766009B1 EP 0766009 B1 EP0766009 B1 EP 0766009B1 EP 96112086 A EP96112086 A EP 96112086A EP 96112086 A EP96112086 A EP 96112086A EP 0766009 B1 EP0766009 B1 EP 0766009B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure
- control
- line
- connection
- 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
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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
- 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
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
-
- 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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable 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
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve 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
- 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
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- 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
Definitions
- the invention relates to a control device of a hydraulic motor according to the in the preamble of Claim 1 specified genus.
- the inventive device for controlling a hydraulic motor with the characteristic features of the main claim has the advantage that the Measuring throttle and the associated pressure loss are eliminated, the previous advantages of the facility in essentially be maintained.
- the Measuring choke also dispenses with one of the assigned Control lines.
- This is now in the facility Pressure drop of the check valve designed as a directional cartridge to control the differential pressure controlled changeover valve exploited.
- This check valve is in the facility already available for switching the on and off Plunger control.
- the present Also set up on the bypass check valve Measuring choke can be dispensed with. Overall, with present facility to a greater extent Achieve energy savings.
- the facility is also building less complex and inexpensive.
- FIG. 1 shows a device for control of a hydraulic motor in a simplified representation
- Figure 2 shows a longitudinal section through the simplified in Figure 1 Shut-off valve shown
- Figure 3 is a flow chart for the check valve of Figure 2
- Figure 4 is a longitudinal section by the switching valve shown in simplified form in FIG. 1 and FIG. 5 characteristic curves for the reflux volume flow from the Cylinder when closing.
- a device 10 for controlling a hydraulic motor which here as a differential cylinder 11 is designed, for example, as a locking cylinder in a plastic injection molding machine for operating a mold is used.
- the differential cylinder 11 has one its large effective area assigned cylinder space 12 and one associated with the smaller effective area Annulus 13, their area ratio as 2: 1 is trained.
- the device 10 has essentially as components designed as an electro-hydraulic control valve Proportional valve 14, a pressure-dependent controlled Switch valve 15, a pilot operated check valve 16, a Check valve 17 and a safety valve 18.
- the proportional valve 14 which is known per se, has two stages trained in a control loop not shown switched and points next to a spring-centered Neutral position 19 with associated zero relief a first Working position 21 and a second working position 22.
- An inlet port 23 designated by P is from a Pump 24 via an inlet line 25 with pressure medium supplied, the in the feed line 25 Safety valve 18 is switched.
- Return port 26 is via a tank line 27, in the check valve 16 is switched with the tank 28 in Connection. From a first marked with A.
- Motor connection 29 leads a first working line 31 into the Annulus 13 of the differential cylinder 11.
- a second motor connection 32 designated by B is via a second working line 32 with the cylinder space 12 connected.
- valve 16 As shown in FIG. 1 in connection with FIG. 2, there is the check valve 16 connected in the tank line 27 from a 2/2-way cartridge 34 in seat valve type, the hydraulically from a pilot valve Solenoid valve 35 is pilot controlled.
- the check valve 16 is designed as a normally closed valve, because in the Way cartridge 34 of the valve body 36 on a spring 37 its assigned seat is pressed.
- the separates Valve body 36 has an A connection 38 located on the end face from a laterally located B connection 39. During the A connection 38 over a section of the tank line 27 with the Proportional valve 14 has connection, the B port 39 relieved to tank 28.
- the way cartridge 34 is more common Formed with an area ratio of 1: 1.6.
- a control connection 41 of the directional cartridge 34 carries a first one Control line 42 to solenoid valve 35, which is a 4/3-way valve is executed.
- a second leads from solenoid valve 35 Control line 43 via a throttle point 40 to the between Proportional valve 14 and check valve 16 lying section the tank line 27, so that the pressure upstream from Check valve 16 can be tapped in the tank line.
- a third control line goes from the solenoid valve 35 44 from which leads to the switching valve 15.
- the solenoid valve 35 has one Middle position 46, in which it is the first to third Control line 42 to 44 via the fourth control line 45 to Relieved tank 28.
- the solenoid valve 35 in two Working positions are deflected, namely in one Parallel position 47 and 48 in a cross position Check valve can open and close the Tank line 27 also a kind of check valve function take.
- Figure 3 shows a flow diagram for the way cartridge 34 according to FIG. 2, the characteristic curve 49 dependence of the Flow Q represents the pressure drop ⁇ P.
- This Characteristic curve 49 applies to a certain nominal size, the Characteristic curves for smaller nominal sizes of way cartridges have a steeper course, while larger nominal sizes have a flatter characteristic curve.
- As from the Characteristic curve 49 shows is each flow through the Path cartridge 34 assigned a certain pressure drop, so that this pressure via the third control line 44 for activation of the switching valve 15 can be used.
- FIG. 1 shows in more detail, this is controlled as a function of pressure Switching valve 15 switched into a return line 51, which directly the cylinder space 12 of the cylinder 11 connects the tank 28.
- the switching valve 15 as a 2/2-way cartridge in slide construction with an area ratio executed by 1: 1.
- the way cartridge 52 is normal closed valve, its front A connection 53 to the tank 28 is relieved, while the radial lying B port 54 over a portion of the Return line 51 is connected to the cylinder chamber 12.
- the slider 55 is moved by a spring 56 in the direction of it Blocked position loaded and in the same direction by the pressure in the A connection 53.
- the third control line 44 is on one Control port 57 connected so that its pressure Slide 55 against the force of the spring 56 in the opening direction can deflect.
- the way cartridge 52 works as a continuous acting throttle valve that is the size of the over the Return line 51 flowing volume flow proportional to the size of the control pressure prevailing in the control connection 57 controls.
- a bypass line 58 is also provided for the plunger circuit provided by the section of the tank line 27 branches off between proportional valve 14 and check valve 34 and opens into the second working line 33. In this way is the return port 26 of the proportional valve 14 below Bypassing changeover valve 15 and check valve 16 directly connected to the cylinder space 12. In these Bypass line 58 the check valve 17 is switched so that it opens to the cylinder chamber 12.
- the differential cylinder 11 is opened the side of the annular space 13 pressurized, so that the piston rod retracts.
- Proportional valve 14 in its first working position 21 controlled and at the same time the solenoid valve 35 in his Cross position 48 deflected.
- Pressure medium passes through the proportional valve 14 and first working line 31 in the annular space 13; simultaneously the cylinder chamber 12 becomes twice as large Volume flow displaced. This displaced volume flow divides in two sub-streams.
- One of these partial flows is flowing over the second working line 33 and over the control edge B-T in the proportional valve 14 in the tank line 27 and continue via the open directional cartridge 34 of the check valve 16 to the tank 28.
- the cartridge 34 is open because whose control connection 41 via the first control line 42 and the solenoid valve 35 located in the cross position 48 for fourth control line 45 and thus to the tank.
- the second control line 42 pressure prevailing upstream of the path cartridge 34 the tank line 27 tapped and in the cross position 48 located solenoid valve 35 and the third control line 44 guided into the control connection 57 of the changeover valve 15.
- the characteristic curve 49 in FIG. 3 shows, changes this tapped upstream from the path cartridge 34 Control pressure depending on the size of the tank 28 flowing volume flow. With this control pressure thus control the opening of the switching valve 15 so that the second partial flow from the cylinder chamber 12 via the Return line 51 can flow directly to the tank 28.
- the switching valve 15 With increasing flow through the cartridge 34 is also the switching valve 15 increasingly open.
- the functions acceleration and braking can thus be during the closing process using the electro-hydraulic controlled proportional valve 14 in a flawless manner carry out. All functions for the closing movement can only be driven when the safety valve 18 with position monitoring is open. That is only then possible if an assigned protective grille is closed has been.
- Proportional valve 14 the cylinder chamber 12 with pressure medium must act.
- Proportional valve in its second working position 22 controlled so that pressure medium from the pump 24 to Cylinder chamber 12 arrives and the piston rod first great force is expelled.
- the annular space 13 of the Cylinder 11 via the first working line 31, the Control edge A-T in the proportional valve 14, the tank line 27 and the check valve 16 to the tank 28 is relieved.
- the Solenoid valve 35 assumes its central position 46, so that the control port 41 in the way cartridge 34 is relieved and thus the cartridge 34 as a check valve can work.
- the check valve 16 must also can only be designed for a simple volume flow and can have a correspondingly small nominal size.
- the device 10 can also with a Operate differential cylinder in which the extending Piston rod causes the mold to close. Further can be set up for additional functions such as Pressure build-up and decompression also additional Valve elements are installed.
- the two-stage Proportional valve 14 can also be a single stage Use control valve. That just flowed through Switch valve 15 can also be double-flow Execute changeover valve. Present facility is suitable especially for locking devices of spray and Blow molding machines.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
Description
Claims (8)
- Einrichtung zur Steuerung eines hydraulischen Motors, insbesondere eines Schließzylinders einer Kunststoff-Spritzgießmaschine, bei welcher Einrichtung der Motor als Differentialzylinder (11) mit Ringraum (13) und Zylinderraum (12) ausgebildet und über ein elektrohydraulisches Regelventil (14) ansteuerbar ist, und mit einem einen Steuerdruck erzeugenden Bauelement, das zumindest beim Entleeren des Zylinderraums (12) in einen über das Regelventil (14) geführten ersten Volumenstrom geschaltet ist und dabei einen Steuerdruck erzeugt, mit der ein differenzdruckabhängig gesteuertes, proportional arbeitendes Umschaltventil (15) ansteuerbar ist, das beim Entleeren des Zylinderraums (12) einen zum ersten Volumenstrom parallel geführten, zweiten Volumenstrom zum Tank steuert, und mit einer Tauchkolbenschaltung, um einen aus dem Ringraum abfließenden Volumenstrom über eine Bypaßleitung (58) mit einem zum Rücklauf-Anschluß (26) hin sperrenden Rückschlagventil (17) in den dabei druckbeaufschlagten Zylinderraum (12) zurückzuführen, und mit einem Sperrventil (16), das in eine vom Rücklauf-Anschluß (26) des Regelventils (14) zum Tank geführte Tankleitung geschaltet und von einem Vorsteuerventil (35) ansteuerbar ist, dadurch gekennzeichnet, daß die Funktion des den Steuerdruck erzeugenden Bauelements vom Sperrventil (16) übernommen wird und von dessen Vorsteuerventil (35) mindestens eine Steuerleitung (44) zum proportional arbeitenden Umschaltventil (15) zu dessen Ansteuerung geführt ist.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Umschaltventil (15) als stetig arbeitende 2-Wege-Patrone (52) ausgebildet ist, deren seitlicher, druckunempfindlicher Anschluß (54) mit dem Zylinderraum (12) Verbindung hat, während der stirnseitige, druckempfindliche Anschluß (53) zum Tank (28) entlastet ist und daß deren Schieber (55) gleichsinnig zum Druck im stirnseitigen Anschluß (53) von der Kraft einer Feder (56) und gegensinnig von dem Druck in der dritten Steuerleitung (44) beaufschlagt ist, wobei der Schieber (55) von der Feder (56) in Richtung einer Sperrstellung belastet ist und gegen die Kraft der Feder (56) öffnet.
- Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Sperrventil (16) eine Durchflußkennlinie (49) aufweist, die mit zunehmendem Durchfluß (Q) einen stetig ansteigenden'Durchflußwiderstand (Δp) aufweist.
- Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Sperrventil (16) als 2-Wege-Patrone (34) in Sitzventilbauart ausgeführt ist, deren stirnseitiger Anschluß (38) an das Regelventil (14) und deren seitlicher Anschluß (39) an den Tank (28) angeschlossen sind, dessen Ventilkörper (36) von der Feder (37) und vom Druck im Steueranschluß (41) in Schließrichtung und vom Druck im stirnseitigen Anschluß (38) in Öffnungsrichtung belastet ist und insbesondere ein Flächenverhältnis von 1:1,6 aufweist.
- Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Sperrventil (16) in die vom Regelventil (14) abgehende Tankleitung (27) stromabwärts von der Abzweigung der Bypaßleitung (58) geschaltet ist.
- Einrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß im hydraulischen Motor (11) zum Schließen der Form dessen Ringraum (13) mit Druckmittel beaufschlagt wird.
- Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das im Sperrventil (16) zur Vorsteuerung dienende Magnetventil (35) als 4/3-Ventil ausgebildet ist, von dem zwei abgehende Steuerleitungen (42, 43) zur Ansteuerung der Wegepatrone (34) dienen, eine vierte Steuerleitung (45) zum Tank (28) führt und eine dritte Steuerleitung (44) an einen Steueranschluß (57) des Umschaltventils (15) angeschlossen ist.
- Einrichtung nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die zum Zylinderraum (12) führende Arbeitsleitung (33), die Bypaßleitung (58) und die Rücklaufleitung (51) im Bereich zwischen Regelventil (14) und Zylinderraum (12) einen gemeinsamen Knotenpunkt bilden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19535677A DE19535677A1 (de) | 1995-09-26 | 1995-09-26 | Einrichtung zur Steuerung eines hydraulischen Motors |
DE19535677 | 1995-09-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0766009A2 EP0766009A2 (de) | 1997-04-02 |
EP0766009A3 EP0766009A3 (de) | 1999-06-09 |
EP0766009B1 true EP0766009B1 (de) | 2003-02-26 |
Family
ID=7773156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96112086A Expired - Lifetime EP0766009B1 (de) | 1995-09-26 | 1996-07-26 | Einrichtung zur Steuerung eines hydraulischen Motors |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0766009B1 (de) |
KR (1) | KR970016176A (de) |
AT (1) | ATE233375T1 (de) |
DE (2) | DE19535677A1 (de) |
TW (1) | TW360755B (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3962670B2 (ja) * | 2002-10-25 | 2007-08-22 | 株式会社アーステクニカ | 旋動式破砕機の油圧回路およびその油圧回路の制御方法 |
DE102005035170B4 (de) * | 2004-10-15 | 2013-11-21 | Bosch Rexroth Ag | Hydraulisch betätigte Gießeinheit |
CN109982789B (zh) * | 2016-11-24 | 2021-11-02 | 罗伯特·博世有限公司 | 液压铸造单元 |
CN108716493B (zh) * | 2018-07-25 | 2024-05-03 | 台州东仪机械制造有限公司 | 气缸节能系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960059A (en) * | 1974-12-09 | 1976-06-01 | Caterpillar Tractor Co. | Fast exhaust circuit for hydraulic jacks |
US4194532A (en) * | 1978-04-10 | 1980-03-25 | Caterpillar Tractor Co. | Control valve with bypass means |
DE4020451A1 (de) * | 1990-06-27 | 1992-01-02 | Bosch Gmbh Robert | Einrichtung zur steuerung eines hydraulischen motors |
US5415076A (en) * | 1994-04-18 | 1995-05-16 | Caterpillar Inc. | Hydraulic system having a combined meter-out and regeneration valve assembly |
-
1995
- 1995-09-26 DE DE19535677A patent/DE19535677A1/de not_active Withdrawn
-
1996
- 1996-07-26 DE DE59610165T patent/DE59610165D1/de not_active Expired - Lifetime
- 1996-07-26 EP EP96112086A patent/EP0766009B1/de not_active Expired - Lifetime
- 1996-07-26 AT AT96112086T patent/ATE233375T1/de not_active IP Right Cessation
- 1996-09-17 TW TW085111340A patent/TW360755B/zh active
- 1996-09-23 KR KR1019960041536A patent/KR970016176A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
KR970016176A (ko) | 1997-04-28 |
EP0766009A2 (de) | 1997-04-02 |
TW360755B (en) | 1999-06-11 |
DE59610165D1 (de) | 2003-04-03 |
DE19535677A1 (de) | 1997-03-27 |
ATE233375T1 (de) | 2003-03-15 |
EP0766009A3 (de) | 1999-06-09 |
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