EP0778191B1 - Dispositif pour l'application simultane d'une force par des actuateurs hydrauliques arrangées en série - Google Patents

Dispositif pour l'application simultane d'une force par des actuateurs hydrauliques arrangées en série Download PDF

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Publication number
EP0778191B1
EP0778191B1 EP96440107A EP96440107A EP0778191B1 EP 0778191 B1 EP0778191 B1 EP 0778191B1 EP 96440107 A EP96440107 A EP 96440107A EP 96440107 A EP96440107 A EP 96440107A EP 0778191 B1 EP0778191 B1 EP 0778191B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
switch
series
hydraulic pump
hydraulic fluid
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
Application number
EP96440107A
Other languages
German (de)
English (en)
Other versions
EP0778191A3 (fr
EP0778191A2 (fr
Inventor
Kurt Vogelgsang
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0778191A2 publication Critical patent/EP0778191A2/fr
Publication of EP0778191A3 publication Critical patent/EP0778191A3/fr
Application granted granted Critical
Publication of EP0778191B1 publication Critical patent/EP0778191B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/045—Compensating for variations in viscosity or temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/04—Fluid-pressure devices for operating points or scotch-blocks

Definitions

  • the invention relates to a device according to the preamble of Claim 1.
  • a device can e.g. to the Switching of railway points with large radii, the tongues of which Adjustment process in several places simultaneously with actuating force must be applied, used and is in this Use known under the term "hydraulic linkage".
  • to A single pump unit is sufficient to operate a switch, even if it is an extremely slim turnout with very long switch tongues.
  • Such a device is e.g. from the publication DE 2 144 564 known.
  • the invention is therefore based on the object of a device to improve according to the preamble of claim 1 so that external influences, especially temperature changes, none significant pressure changes in the between the actuators located parts of the hydraulic system can cause more.
  • controllable valves which are open in the idle state of the device and a connection to the hydraulic fluid reservoir, can Changes in fluid volumes in the past closed parts of the hydraulic pressure distribution system and those connected to it Spaces of the actuators arise, balance, with Excess hydraulic fluid expansion Hydraulic fluid flows into the hydraulic fluid reservoir, however, when the volume of the hydraulic fluid is reduced additional hydraulic fluid from the Hydraulic fluid reservoir is sucked. This allows you to no higher overpressures or underpressures in the between the Actuators located more parts of the hydraulic system.
  • the valves are controllable during operation of the device closed and allow the pressure build-up required during operation in the then hermetically sealed, the actuators interconnecting parts of the hydraulic system.
  • claim 2 describes the device according to the invention in Connection to a switch driven by the device. There Switches are exposed to large temperature differences outdoors, The advantages of the solution according to the invention are particularly evident here Wear.
  • Claims 3 and 4 relate to the type and connection of the used Valves.
  • the common connection with the hydraulic pump motor saves separate switching means.
  • the figure shows schematically the device according to the invention, used to operate a switch tongue WZ.
  • the switch tongue WZ is part of a slim switch W with large radius of curvature. To bend the switch tongue when To avoid places, it will be at two points P1 and P2 acted upon at the same time with force. Two serve as a source of power double acting hydraulic cylinders Z1 and Z2, both Force on the switch tongue in both the pushing direction and the pulling direction can exercise.
  • Both working cylinders are hydraulically connected in series, i.e. the volume of hydraulic fluid displaced in cylinder Z1 serves to drive the downstream cylinder Z2.
  • Cylinder Z1 is made up of an electric motor M and pump P existing hydraulic unit H via a pressure line L1 with pressure applied. With the pressure line L1 is a pressure relief valve V1 connected, which opens when an adjustable pressure, the one corresponds to the specified actuating force, is exceeded. That in Cylinder Z1 volume displaced by piston K is determined by the Pressure line L3 pressed into cylinder Z2 and sets its piston moving. Because of the incompressibility of the hydraulic fluid the two pistons move synchronously. The one from the Cylinder forces exerted on the switch tongue act simultaneously. Their size as well as that of the pistons of the Working cylinder each covered path that on the travel path of Switch tongue is coordinated at the respective force application point, depend on the geometric dimensions of the cylinders.
  • valve V3 Another valve, the solenoid valve V3.
  • This connects the line L4 between the two Working cylinders Z1 and Z2 running pressure line L3 directly with the hydraulic fluid tank.
  • valve V3 is open and overpressure or underpressure in line L3 can become apparent Hydraulic fluid escapes into the FB tank or through Compensate suction of liquid from the FB container.
  • the device described here is not two sequential control units limited. It can too there are many more such hydraulic actuators in series. In In this case, everyone must be between two control units closed area of the hydraulic system via a Connection line to the hydraulic fluid tank and this have opening and closing solenoid valve.
  • the through the Device actuated elements can also be different Have functions and do not necessarily need one Railway switch to communicate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (5)

  1. Dispositif destiné à exercer simultanément une force en deux lieux (P1, P2) distincts et séparés dans l'espace, comprenant un système distributeur ou répartiteur de pression hydraulique, une pompe hydraulique (P) à laquelle est relié un réservoir de fluide hydraulique (FB), et plusieurs actionneurs de positionnement (vérins) (Z1, Z2) montés en série sur le plan hydraulique et pouvant être alimentés en pression par la pompe hydraulique,
    caractérisé en ce que des zones (L3) du système distributeur de pression hydraulique, placées entre les actionneurs de positionnement et délimitées ou fermées par ceux-ci, sont reliées au réservoir de fluide hydraulique (FB), chacune par l'intermédiaire d'au moins une vanne (V3) pouvant être commandée et qui est ouverte dans l'état de repos du dispositif.
  2. Dispositif selon la revendication 1, caractérisé en ce que les actionneurs de positionnement montés en série sur le plan hydraulique sont disposés de manière mutuellement espacée le long d'une aiguille (W) de chemin de fer, et exercent, durant la phase de positionnement de l'aiguille, en différents lieux (P1, P2), une force sur une lame d'aiguille ou les deux lames d'aiguille (WZ).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les vannes (V3) pouvant être commandées sont entraínées par voie électrique et sont fermées simultanément avec la mise en marche de la pompe hydraulique.
  4. Dispositif selon la revendication 3, caractérisé en ce que les vannes pouvant être commandées sont des électrovannes fermant lorsqu'elles sont alimentées en courant, et dont les enroulements sont montés en parallèle respectivement avec un enroulement d'un moteur triphasé entraínant la pompe hydraulique.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce qu'avec au moins un actionneur de positionnement entraínant une lame d'aiguille ou les deux lames d'aiguille, est monté en série sur le plan hydraulique, au moins un autre actionneur de positionnement hydraulique, qui entraíne un élément de positionnement de l'aiguille, devant être actionné séparément des lames d'aiguille..
EP96440107A 1995-12-08 1996-12-06 Dispositif pour l'application simultane d'une force par des actuateurs hydrauliques arrangées en série Expired - Lifetime EP0778191B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19545784 1995-12-08
DE19545784A DE19545784A1 (de) 1995-12-08 1995-12-08 Vorrichtung zur gleichzeitigen Kraftausübung mittels hydraulisch hintereinandergeschalteter hydraulisch er Stelleinheiten

Publications (3)

Publication Number Publication Date
EP0778191A2 EP0778191A2 (fr) 1997-06-11
EP0778191A3 EP0778191A3 (fr) 1999-05-19
EP0778191B1 true EP0778191B1 (fr) 2002-07-24

Family

ID=7779521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96440107A Expired - Lifetime EP0778191B1 (fr) 1995-12-08 1996-12-06 Dispositif pour l'application simultane d'une force par des actuateurs hydrauliques arrangées en série

Country Status (3)

Country Link
EP (1) EP0778191B1 (fr)
AT (1) ATE221012T1 (fr)
DE (2) DE19545784A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407369B (de) 1998-04-07 2001-02-26 Vae Ag Einrichtung zum umstellen der beweglichen teile von schienenweichen oder -kreuzungen
AT5757U1 (de) * 2001-07-31 2002-11-25 Vae Eisenbahnsysteme Gmbh Einrichtung zum umstellen von weichen
ITMI20061647A1 (it) * 2006-08-28 2008-02-29 Gen Electric Motore idraulico per scambi ferroviari
CZ21157U1 (cs) * 2010-04-14 2010-08-09 DT-VÝHYBKÁRNA A STROJÍRNA, a.s. Hydraulické zarízení záverové soustavy s paralelne zapojenými hydraulickými válci u železnicních výhybek

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004924B (de) * 1952-01-25 1957-03-21 Anton Joseph Van Broekhoven Hydraulische Presse oder Schere mit Parallelfuehrung des Pressbalkens
US3433123A (en) * 1967-09-28 1969-03-18 Hastings Dynamold Corp Hydraulic drive system
DE1952823C3 (de) * 1969-10-21 1975-08-21 Standard Elektrik Lorenz Ag, 7000 Stuttgart Einrichtung zum Umstellen von Schlankweichen in Eisenbahnanlagen
DE2144564A1 (de) * 1971-09-06 1973-03-15 Siemens Ag Weichenstellsystem fuer eisenbahnanlagen mit schlankweichen
FR2271098A2 (en) * 1973-10-26 1975-12-12 Theissen Jacques Railway points actuation mechanism - has four-way distributor/reverser valves between pump and actuating rams
IN147860B (fr) * 1977-02-03 1980-07-26 Westinghouse Brake & Signal
US4428552A (en) * 1981-05-04 1984-01-31 Abex Corporation Railroad switch machine
IT1242226B (it) * 1990-10-10 1994-03-03 Sasib Spa Dispositivo di manovra per deviatoi ferroviari, in particolare per linee ad alta velocita'
DE4136881A1 (de) * 1991-11-09 1993-05-13 Butzbacher Weichenbau Gmbh Verfahren zum verstellen einer ersten schiene zu einer zweiten schiene
US5320047A (en) * 1992-03-06 1994-06-14 Monarch Hydraulics, Inc. Desk having self-releveling height adjustment and hydraulic circuit therefor

Also Published As

Publication number Publication date
EP0778191A3 (fr) 1999-05-19
DE59609478D1 (de) 2002-08-29
DE19545784A1 (de) 1997-06-12
ATE221012T1 (de) 2002-08-15
EP0778191A2 (fr) 1997-06-11

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