EP0092064B1 - Vorrichtung zum Betätigen eines Schiebekörpers, insbesondere des Kolbenschiebers eines Wegeventils - Google Patents

Vorrichtung zum Betätigen eines Schiebekörpers, insbesondere des Kolbenschiebers eines Wegeventils Download PDF

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Publication number
EP0092064B1
EP0092064B1 EP83102910A EP83102910A EP0092064B1 EP 0092064 B1 EP0092064 B1 EP 0092064B1 EP 83102910 A EP83102910 A EP 83102910A EP 83102910 A EP83102910 A EP 83102910A EP 0092064 B1 EP0092064 B1 EP 0092064B1
Authority
EP
European Patent Office
Prior art keywords
pressure
regulating
spring
piston
engaged
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
Application number
EP83102910A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0092064A3 (en
EP0092064A2 (de
Inventor
Reiner Bartholomäus
Michel Rivolier
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.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Publication of EP0092064A2 publication Critical patent/EP0092064A2/de
Publication of EP0092064A3 publication Critical patent/EP0092064A3/de
Application granted granted Critical
Publication of EP0092064B1 publication Critical patent/EP0092064B1/de
Expired legal-status Critical Current

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87209—Electric

Definitions

  • the invention relates to a double-acting actuator with the features specified in the preamble of claim 1 and 4, respectively.
  • the object on which the invention is based is to design the actuating device of the type described at the outset in such a way that the proportional adjustment of the actuating piston and thus of the sliding body is achieved by means of a reduced construction outlay for the pilot valve device.
  • the pilot valve device consists of two three-way pressure reducing valves, both of which are connected in parallel to the pressure medium source and to the tank.
  • the pressure of the pressure medium source has no influence on the accuracy and proportionality of the adjustment path.
  • the pressure compensation takes place through the compensation spring, which is adjusted so that the adjusting force acting on the sliding body is the same regardless of whether the annular surface or the circular surface of the actuating piston is pressurized.
  • actuating devices according to the invention are suitable both for actuating the spool of directional valves, but also of other valves and in particular also for actuating the pistons of variable pumps.
  • a spool 10 is slidably disposed in a housing bore 11 of a valve housing 12.
  • the pressure medium paths to and from a consumer are not shown.
  • an actuating piston 14 is fastened, which has a larger diameter than the spool 10.
  • the actuating piston 14 divides two control spaces 16 and 17 from the housing 15.
  • the pressure in the control chamber 16 is controlled by a three-way pressure reducing valve 18 and the pressure in the control chamber 17 by a three-way pressure reducing valve 19.
  • the pressure in the control chamber 17 acts on the circular surface 20 of the actuating piston 14, while the pressure in the control chamber 16 acts on the annular surface 21 of the actuating piston, which results from the difference between the outer diameter of the actuating piston and the diameter of the piston slide 10.
  • a compensating spring 24 is supported at one end on a stop of the housing 12 and at the other end on a spring plate 25 which is pressed against a housing stop 26 by the spring 24, as a result of which the actuating piston 14 supported on the spring plate and thus the piston slide 10 is pressed into the starting position shown.
  • a return spring 27 is provided, one end of which is also supported on the spring plate 25 and the other end of which is supported on a spring holder 28 which, in the starting position shown, is supported on a collar 29 of the piston slide 10 and on the stop of the housing 12 .
  • FIG 2 is a section through one of the Three-way pressure reducing valves 18 and 19 shown.
  • This consists of a proportional magnet 30, the plunger 31 of which acts in a known manner on a piston 32 which works against a compression spring 33.
  • the pressure at the pressure connection 34 which is connected to the control chamber 16 or the control chamber 17, is set in a current-dependent manner by exciting the proportional magnet 30.
  • the plunger 31 of the magnet armature displaces the control piston 32 against the compression spring 33. Pressure medium then flows from the one with a Pressure medium source connected port 35 to port 34.
  • the three-pressure reducing valve 19 is actuated, the pressure in the space 17 acts on the circular surface 20 and the piston slide 10 is displaced upwards, the return spring also being compressed again, in addition to the return spring, but also the compensating spring 24, which is located on the housing stop 12 supports.
  • the compensating spring 24 must be dimensioned such that it compensates for the difference in the actuating forces, which is caused by the fact that the same pressure applied to differently sized shelves acts on the circular surface 20 and on the annular surface 21 of the actuating piston 14.
  • FIG. 3 shows a modified embodiment, in which a piston slide 10 is also connected to an actuating piston 14, which divides a control chamber 17 from a control chamber 16. Each control room is in turn connected to a three-way pressure reducing valve or 19.
  • a return spring 27 is in turn arranged between the actuating piston 14 and the piston slide 10, which is supported at one end on the spring plate 25 already described and at its other end on a spring holder 28. A compensation spring is not provided.
  • the different actuating forces are compensated for by the circuit of the three-way pressure reducing valves 18 and 19 shown in FIG. 4.
  • the actuating piston 14 and the control chambers 16 and 17 are shown schematically in FIG. 4, and the connections of the three-way pressure reducing valves are shown in FIG 2 provided reference numerals. If the three-way pressure reducing valve 18 is actuated, the connections 35 and 34 are connected to one another, so that pressure medium enters the control chamber 16 and displaces the actuating piston 14 to the right, the displaced volume flowing to the tank connection 36 of the three-way pressure reducing valve 38.
  • the three-way pressure reducing valve 19 is actuated, pressure medium passes from the connection 35 via 34 into the control chamber 17 as well as via the branch line 40 and the connections 36 and 34 of the non-actuated pressure reducing valve 38 into the control chamber 16.
  • the annular surface 21 relates to the circular surface 20 as 1: 2, the actuating forces on the actuating piston 14 are the same at the same pressures of the pressure medium controlled by the three-way pressure reducing valves 18 or 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Servomotors (AREA)
  • Fluid-Driven Valves (AREA)
EP83102910A 1982-04-21 1983-03-24 Vorrichtung zum Betätigen eines Schiebekörpers, insbesondere des Kolbenschiebers eines Wegeventils Expired EP0092064B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3214845 1982-04-21
DE19823214845 DE3214845A1 (de) 1982-04-21 1982-04-21 Vorrichtung zum betaetigen eines schiebekoerpers, insbesondere des kolbenschiebers eines wegeventils

Publications (3)

Publication Number Publication Date
EP0092064A2 EP0092064A2 (de) 1983-10-26
EP0092064A3 EP0092064A3 (en) 1984-07-25
EP0092064B1 true EP0092064B1 (de) 1987-02-25

Family

ID=6161557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102910A Expired EP0092064B1 (de) 1982-04-21 1983-03-24 Vorrichtung zum Betätigen eines Schiebekörpers, insbesondere des Kolbenschiebers eines Wegeventils

Country Status (4)

Country Link
US (1) US4519573A (enrdf_load_stackoverflow)
EP (1) EP0092064B1 (enrdf_load_stackoverflow)
JP (1) JPS5917005A (enrdf_load_stackoverflow)
DE (2) DE3214845A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404598A1 (de) * 1984-02-09 1985-08-14 Mannesmann Rexroth GmbH, 8770 Lohr Speicherladeventil mit druckabsicherung des speicherkreises
DE3690051C1 (de) * 1985-02-23 1997-09-18 Barmag Barmer Maschf Proportionalventil mit einem einstellbaren Drosselventil zwischen Pumpe und Last sowie einer Druckwaage
DE3639178A1 (de) * 1986-11-15 1988-05-26 Wabco Westinghouse Fahrzeug Tuerventil
DE3841985A1 (de) * 1988-12-14 1990-06-21 Kloeckner Humboldt Deutz Ag Elektrohydraulische servo-betaetigung von standardwegeventilen
DE3909433A1 (de) * 1989-03-22 1990-09-27 Bosch Gmbh Robert Elektrohydraulische stelleinrichtung
DE4011908C3 (de) * 1990-02-06 1996-08-14 Festo Kg Mehrwegeventil
DE4042518C2 (de) * 1990-02-06 1996-05-23 Festo Kg Mehrwegeventil
DE19512007A1 (de) * 1995-03-31 1996-10-02 Rexroth Mannesmann Gmbh Hydraulisch betätigbares Wegeventil
AT515661B1 (de) 2014-11-21 2015-11-15 Blum Gmbh Julius Stellantrieb für bewegbare Möbelteile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2533829A1 (de) * 1975-07-29 1977-02-17 Bosch Gmbh Robert Elektrohydraulische steuereinrichtung
DE2140972B2 (de) * 1970-09-30 1978-07-13 Sperry Rand Corp., Troy, Mich. (V.St.A.) Indirekt steuerbares Servoventil
DE2112813B2 (de) * 1971-03-17 1980-07-03 Robert Bosch Gmbh, 7000 Stuttgart Elektrohydraulische Steuereinrichtung
DE3043935A1 (de) * 1979-11-21 1981-06-04 Diesel Kiki Co. Ltd., Tokyo Vehtilvorrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR559284A (fr) * 1922-01-19 1923-09-12 Buehler Ag Geb Piston différentiel pour cylindres hydrauliques
FR1309571A (fr) * 1961-12-20 1962-11-16 Bergomi Spa Dispositif pour la variation automatique, en fonction de la charge extérieure, de la vitesse d'expansion et de la force exercée pendant l'expansion de vérins hydrauliques à double effet
US3428063A (en) * 1966-10-12 1969-02-18 Whittaker Corp Liquid transfer valve having float control and acceleration responsive pilot valve
US3477466A (en) * 1967-04-03 1969-11-11 Lewis D Sturm Elevator fluid control valve mechanism
DE1807171A1 (de) * 1968-11-06 1970-06-18 Bosch Gmbh Robert Einrichtung zur elektrohydraulischen Fernsteuerung hydraulischer Wegeventile
US3736958A (en) * 1972-04-13 1973-06-05 Lockheed Aircraft Corp Four-way solenoid selector valve
US3863672A (en) * 1973-09-06 1975-02-04 B W B Controls Inc Dual action pilot
FR2273178B1 (enrdf_load_stackoverflow) * 1974-05-31 1978-03-24 Bennes Marrel
FR2312675B1 (fr) * 1975-05-29 1977-12-09 Bennes Marrel Sa Dispositif de commande d'un gros distributeur hydraulique, notamment pour engins de travaux publics
DE2835771A1 (de) * 1978-08-16 1980-02-28 Schwelm & Towler Hydraulics Anordnung zur aussteuerung eines cartridgeelementes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2140972B2 (de) * 1970-09-30 1978-07-13 Sperry Rand Corp., Troy, Mich. (V.St.A.) Indirekt steuerbares Servoventil
DE2112813B2 (de) * 1971-03-17 1980-07-03 Robert Bosch Gmbh, 7000 Stuttgart Elektrohydraulische Steuereinrichtung
DE2533829A1 (de) * 1975-07-29 1977-02-17 Bosch Gmbh Robert Elektrohydraulische steuereinrichtung
DE3043935A1 (de) * 1979-11-21 1981-06-04 Diesel Kiki Co. Ltd., Tokyo Vehtilvorrichtung

Also Published As

Publication number Publication date
DE3369872D1 (en) 1987-04-02
EP0092064A3 (en) 1984-07-25
JPS5917005A (ja) 1984-01-28
DE3214845C2 (enrdf_load_stackoverflow) 1990-03-15
US4519573A (en) 1985-05-28
EP0092064A2 (de) 1983-10-26
DE3214845A1 (de) 1983-11-03

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