EP2350461B1 - Soupape de distribution hydraulique pour un verin differentiel fonctionnant d'un cote - Google Patents

Soupape de distribution hydraulique pour un verin differentiel fonctionnant d'un cote Download PDF

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Publication number
EP2350461B1
EP2350461B1 EP09759882A EP09759882A EP2350461B1 EP 2350461 B1 EP2350461 B1 EP 2350461B1 EP 09759882 A EP09759882 A EP 09759882A EP 09759882 A EP09759882 A EP 09759882A EP 2350461 B1 EP2350461 B1 EP 2350461B1
Authority
EP
European Patent Office
Prior art keywords
connection
valve
piston
control
control valve
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.)
Active
Application number
EP09759882A
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German (de)
English (en)
Other versions
EP2350461A1 (fr
Inventor
Gerd Scheffel
Georg Bunge
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.)
Parker Hannifin Manufacturing Germany GmbH and Co KG
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Parker Hannifin Manufacturing Germany GmbH and Co KG
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Publication date
Application filed by Parker Hannifin Manufacturing Germany GmbH and Co KG filed Critical Parker Hannifin Manufacturing Germany GmbH and Co KG
Publication of EP2350461A1 publication Critical patent/EP2350461A1/fr
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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
    • 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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • 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

Definitions

  • a second external port A2 is initially formed on the housing, which via an additional external valve line connection to the leading from the port A to the larger displacement of the working cylinder supply and discharge line is connected to the working stroke of the working cylinder to be able to return the liquid displaced from the small displacement bypassing the pump.
  • control valve With the known control valve is initially connected to the significant disadvantage that the control valve has a different from the standard design spool valves hole pattern with six external terminals, and also a specially designed control piston. Another disadvantage is the outside of the control valve to the working cylinder to be provided line connection. Overall, therefore, manufacture and assembly of the known control valve in conjunction with a differential cylinder consuming.
  • a substantially standard trained control piston can be used with two piston collars, in which only an outer recess must receive a correspondingly larger dimension.
  • Internal valve are in the valve housing only the fifth annular channel and the internal bridge to install.
  • the switch from faster piston travel to full holding force at any time that is, in any position of the piston of the working cylinder is possible because it only requires the externally to be effected activation of the valve-internal check valve.
  • the inventive design of the control valve Regardless of the timing of the aforementioned switching independent of the design of the control valve.
  • a first off FIG. 1 resulting working cylinder 10 has a displaceable therein and mutually different surfaces having piston 11 with a piston rod 12.
  • the piston 11 divides the working cylinder 10 into a large capacity 13 and a small displacement 14.
  • Each displacement 13, 14 is connected via a connected thereto supply and at the same discharge line 15 and 16 for the fluid to the load ports of a control valve 20, wherein the Control valve 20 is further associated with a tank 17 and a pump 18.
  • four standard ports P, A, B, T are formed on the valve housing 21 of the control valve 20, the port P to the pump 18, the port A via the supply and discharge line 15 with the large displacement 13 of the working cylinder 10 and the port B is connected via the supply and discharge line 16 with the small displacement 14 of the working cylinder 10.
  • control spaces 46 are respectively formed at the two ends of the control piston 26 in the valve housing 21, which are connected via a pilot control line 47 formed in the valve housing 21 to a pilot control (not shown) connected to the control valve 20.
  • springs 45 are arranged, which fix the control piston 26 at a prevailing in the control chambers 46 pressure of zero bar in its center position.
  • a displacement measuring system 48 is connected at the one end of the control piston 26 .
  • connection from A to T through the left outer recess 28 in Control piston 26 is released, so that the displaced during the return stroke of the piston 11 from the large displacement 13 fluid via the supply and discharge line 15, the port A, the recess 28 and the port T to the tank 17 can flow.
  • the connection opening from A to T recess 28 at least twice the size of the other, formed on the control piston 26 recesses 28a.
  • FIG. 2 is a development of the above FIG. 1 shown control valve, in which now a switchover of the so-called rapid traverse of the working cylinder with faster ejection movement of the piston rod 12 to a state with high holding power is possible.
  • the small displacement 14 of the working cylinder 10 must be relieved by switching to the tank 17 so that no pressure is present in the small displacement 14 of the working cylinder 10.
  • control valve 20 further developed such that the internal bridge 30 is continued in the direction of the tank connection T associated annular space 25 and outgoing therefrom a connecting bore 40 is arranged to the terminal A associated annular space 23.

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)
  • Actuator (AREA)

Claims (2)

  1. Soupape de commande hydraulique servant à commander un vérin hydraulique (10) ayant une double action et présentant un piston (11) doté d'une tige de piston (12) d'un seul côté, présentant les caractéristiques suivantes :
    - la soupape de commande réalisée de manière à présenter la structure d'un robinet à piston présente quatre raccordements externes dotés de canaux annulaires (22, 23, 24, 25) associés, réalisés dans le boîtier de soupape (21),
    - à savoir un raccordement de pompe P, un raccordement A pour une conduite d'amenée et une conduite d'évacuation desservant la grande chambre de cylindre du vérin hydraulique, un raccordement B pour une conduite d'amenée et d'évacuation (15) desservant la petite chambre de cylindre (14) du vérin hydraulique (10) ainsi qu'un raccordement de réservoir T menant au réservoir (17),
    - un piston de commande (26) est disposé dans un alésage du boîtier de soupape (21) de manière à pouvoir être coulissé longitudinalement,
    - des pistons à embase (27) sont réalisés au niveau du piston de commande (26) au moyen d'évidements (28) réalisés dans le piston de commande (26), sur le contour desquels pistons à embase s'étendent des arêtes de commande,
    - les raccordements P, A, B, T sont libérés ou bloqués au moyen des arêtes de commande,
    - afin de réinjecter dans la grande chambre de piston (13) du vérin hydraulique (10) le fluide refoulé en dehors de la petite chambre de piston (14) du vérin hydraulique (10) lors du déploiement de la tige de piston (12) et guidé en direction du raccordement B de la soupape de commande, un pont (30) interne est réalisé dans le boîtier de soupape (21), lequel permet lors d'une position associée du piston de commande (26) de relier l'espace annulaire (24) associé au raccordement B à l'espace annulaire (23) associé au raccordement A,
    caractérisée en ce
    - qu'un cinquième canal annulaire V interne commandé par le piston de commande (26) et relié au raccordement B dans le cas d'une position associée du piston de commande (26) est réalisé dans le boîtier de soupape (21),
    - que le pont interne (30) s'éloigne du cinquième canal annulaire V interne et est raccordé aussi bien par l'intermédiaire d'un alésage de liaison (40) à l'espace annulaire (23) associé au raccordement A que par l'intermédiaire d'une section (41) placée en aval de l'alésage de liaison (40) de départ à l'espace annulaire (25) associé au raccordement de réservoir T,
    - qu'une soupape de retenue (42) interne à la soupape dotée d'une direction de passage orientée en direction du raccordement A est disposée dans l'alésage de liaison (40),
    - qu'une soupape de commande (43) pouvant être commandée de manière externe servant à ouvrir et fermer la liaison V entre le canal annulaire et le raccordement de réservoir T est disposée dans la section (41) du pont (30),
    - sachant que l'évidement (28) du piston de commande (26) servant à relier les raccordements A et T permet l'écoulement d'une quantité de fluide deux fois plus importante que les évidements (28a) du piston de commande (26) reliant les raccordements P et A ou B ainsi que B et V.
  2. Soupape de commande hydraulique selon la revendication 1, caractérisée en ce que la soupape d'arrêt (43) est une soupape d'arrêt à commande électrique.
EP09759882A 2008-11-27 2009-11-17 Soupape de distribution hydraulique pour un verin differentiel fonctionnant d'un cote Active EP2350461B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810059436 DE102008059436B3 (de) 2008-11-27 2008-11-27 Hydraulisches Steuerventil für einen einseitig arbeitenden Differentialzylinder
PCT/EP2009/008171 WO2010060553A1 (fr) 2008-11-27 2009-11-17 Soupape de distribution hydraulique pour un vérin différentiel fonctionnant d'un côté

Publications (2)

Publication Number Publication Date
EP2350461A1 EP2350461A1 (fr) 2011-08-03
EP2350461B1 true EP2350461B1 (fr) 2013-01-16

Family

ID=41396974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09759882A Active EP2350461B1 (fr) 2008-11-27 2009-11-17 Soupape de distribution hydraulique pour un verin differentiel fonctionnant d'un cote

Country Status (3)

Country Link
EP (1) EP2350461B1 (fr)
DE (1) DE102008059436B3 (fr)
WO (1) WO2010060553A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006983B4 (de) 2010-02-05 2012-10-11 Parker Hannifin Gmbh Hydraulisches Steuerventil für einen einseitig arbeitenden Differentialzylinder mit fünf Gehäuseanschlüssen
DE102010009085B3 (de) * 2010-02-24 2011-03-10 Parker Hannifin Gmbh Hydraulisches Steuerventil für einen einseitig arbeitenden Differentialzylinder mit fünf Steuerkanten
DE102010022952B4 (de) 2010-06-08 2012-12-06 Parker Hannifin Gmbh Hydraulisches Antriebssystem für einen Aktuator
DE102011008145B3 (de) 2011-01-08 2012-02-02 Parker Hannifin Gmbh Energieeffizienter hydraulischer Antrieb für die Linearbewegung eines Massekörpers
US9273664B2 (en) * 2011-02-18 2016-03-01 Parker Hannifin Corporation Hydraulic control valve for a one-sided operating differential cylinder having five control edges
DE102011053230B3 (de) * 2011-09-02 2013-01-31 Parker Hannifin Manufacturing Germany GmbH & Co. KG Linear arbeitender Massekörperantrieb mit Energierückgewinnung
DE102011054616B3 (de) * 2011-10-19 2013-02-07 Parker Hannifin Manufacturing Germany GmbH & Co. KG Hydraulisch angetriebene Anordnung zum linearen Bewegen eines Massekörpers
DE102012101120B4 (de) 2012-02-14 2013-08-22 Parker Hannifin Manufacturing Germany GmbH & Co. KG Hydraulisch angetriebene Anordnung zum linearen Bewegen eines Massekörpers
DE102012107699B3 (de) * 2012-08-22 2014-01-02 Parker Hannifin Manufacturing Germany GmbH & Co. KG Massekörperantrieb mit hydraulischer Energierückgewinnungsschaltung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633461A (en) * 1968-04-27 1972-01-11 Komatsu Mfg Co Ltd Hydraulic circuitry for the hoist ram and the like of the building machinery
DE3000260A1 (de) * 1980-01-05 1981-07-09 Konrad Dipl Ing Meyer Einrichtung zur steuerung eines differentialzylinders
WO1998001677A1 (fr) * 1996-07-05 1998-01-15 Parker Hannifin Gmbh Dispositif de commande d'un verin differentiel travaillant sur un seul cote
US6116143A (en) * 1996-07-05 2000-09-12 Parker Hannifin Gmbh Controller for a fluid cylinder
DE10055419A1 (de) * 2000-11-09 2002-05-29 Bosch Gmbh Robert Ventilblock

Also Published As

Publication number Publication date
EP2350461A1 (fr) 2011-08-03
DE102008059436B3 (de) 2010-01-07
WO2010060553A1 (fr) 2010-06-03

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