EP2198442B1 - Mécanisme hydraulique accumulateur à ressort - Google Patents

Mécanisme hydraulique accumulateur à ressort Download PDF

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Publication number
EP2198442B1
EP2198442B1 EP08802713.1A EP08802713A EP2198442B1 EP 2198442 B1 EP2198442 B1 EP 2198442B1 EP 08802713 A EP08802713 A EP 08802713A EP 2198442 B1 EP2198442 B1 EP 2198442B1
Authority
EP
European Patent Office
Prior art keywords
spring
pressure body
guide ring
accumulator
pressure
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
EP08802713.1A
Other languages
German (de)
English (en)
Other versions
EP2198442A1 (fr
Inventor
Henrik Lohrberg
Joachim Eggers
Claus Sticker
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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Filing date
Publication date
Application filed by ABB Technology AG filed Critical ABB Technology AG
Publication of EP2198442A1 publication Critical patent/EP2198442A1/fr
Application granted granted Critical
Publication of EP2198442B1 publication Critical patent/EP2198442B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/301—Charging means using a fluid actuator

Definitions

  • the invention relates to a hydraulic spring accumulator drive according to the preamble of claim 1.
  • Such a spring drive is from the patent application EP 0829892 A1 , in particular Fig. 3, known.
  • a storage spring pressurizes a fluid via a pressure body and at least two pressure pistons. By means of this fluid, a drive rod is moved, which is attached to a slidable in a working cylinder drive piston.
  • the pressure body is preferably annular and arranged concentrically around the working cylinder housing around.
  • the hydraulic system When installing the spring-loaded actuator and during maintenance, the hydraulic system is depressurized.
  • the memory spring is merely biased in this state and expands axially maximum.
  • the storage spring presses the pressure body against a stop on the working cylinder housing, whereby the pressure body between the stop and the storage spring is clamped.
  • the hydraulic system is under pressure.
  • the storage spring is further tensioned in this state, which is referred to as charged in the following, and their axial extent is reduced.
  • the Memory spring presses the pressure body against the pressure piston, which thereby put the fluid under pressure.
  • the pressure body is clamped between the pressure piston and the storage spring.
  • the stop on the working cylinder housing exerts a force on the pressure body in a radially inward direction in the direction of the accumulator spring.
  • the fluid exerts forces in the direction of the accumulator spring via the pressure pistons on the pressure body in a radially outer region.
  • the storage spring exerts a respective equal, oppositely directed counterforce on the pressure body.
  • the counterforce engages radially on the pressure body, the counterforce is offset radially in the case of a hydraulic system under pressure to the forces exerted by the pressure piston. If this counterforce engages radially on the outside of the pressure body, the counterforce is offset radially in the case of a pressureless hydraulic system to the force exerted by the stop.
  • Such a radial force offset can lead to bent at relatively high forces of the pressure body.
  • the object of the invention is to further develop a hydraulic spring-loaded drive of the type mentioned above such that a radial force offset on the pressure body is avoided.
  • a guide ring is arranged radially between the pressure body and the working cylinder housing such that during clamping and while relaxing the storage spring of the guide ring is axially free of force, and that is biased memory spring, the pressure body axially free of force.
  • the storage spring presses radially outward on the pressure body, and that at the same distance to the central axis of the working cylinder housing as the pressure piston.
  • the storage spring presses radially outward on the pressure body, and that at the same distance to the central axis of the working cylinder housing as the pressure piston.
  • the storage spring presses radially inward on the guide ring, and that at the same distance from the central axis of the cylinder housing as the stop.
  • a radial force offset on the pressure body and on the guide ring is avoided.
  • a guide tape is inserted in the guide ring.
  • the guide band improves the sliding properties of the guide ring on working cylinder housing.
  • FIG. 1 an inventive hydraulic spring accumulator drive is shown in a sectional view at unpressurized hydraulic system.
  • the storage spring 12 is designed as a plate spring package.
  • Other types of storage springs are conceivable, for example a spiral spring.
  • the memory spring 10 presses with its head end, which lies opposite the foot, on a guide ring 14 and presses it against a stop 24.
  • the stopper 24 is located in the vicinity of the head portion 26 of the cylinder housing 12, which is the foot portion 20 axially opposite.
  • the area at which the accumulator spring 10 presses on the guide ring 14 is located in the radial direction at the stop 24 level. A radial force offset between the force exerted by the accumulator spring 10 and the opposing force exerted by the stop 24 in the opposite direction is thus avoided.
  • a container body 30 is arranged, which has an axially, that is parallel to the central axis of the working cylinder housing 12, extending bore 32 in which a pressure piston 34 is slidably disposed.
  • a piston rod 36 which protrudes from the bore 32 of the container body 30.
  • the hydraulic spring storage drive has at least two, preferably three container body, each with a bore and located therein pressure piston with piston rod. These container bodies are arranged around the working cylinder housing 12, wherein the central axes of the said bores are equidistant from the central axis of the working cylinder housing 12. In this sectional view, only one container body is shown.
  • the pressure body 16 and the guide ring 14 are axially interlocked with each other so that the pressure body 16 in a movement on the foot portion 20 of the cylinder housing 12 to the guide ring 14 entrains, and that the guide ring 14 in a movement on the head portion 26 of the cylinder housing 12 to the Pressure body 16 entrains.
  • the pressure body 16 and the guide ring 14 are arranged side by side without play. A movement of the pressure body 16 in the radial direction with respect to the guide ring 14 is thus not possible.
  • a guide belt 18 is inserted into the guide ring 14.
  • the accumulator spring 10 is merely biased.
  • the pressure body 16 is axially free of force. The pressure body 16 is thus displaceable in the axial direction between the accumulator spring 10 and the piston rod 36.
  • the accumulator spring 10 For tensioning the accumulator spring 10 is pumped by a pump, not shown here, fluid through a channel 38 into the bore 32, in the memory spring 10 facing away from the area. The fluid forces the accumulator piston 34 and attached piston rod 36 out of the bore 32 toward the accumulator spring 10.
  • the piston rod 36 exerts an axial force on the pressure body 16, which further transmits this force to the accumulator spring 10, whereby the accumulator spring 10 is compressed and thus tensioned.
  • the pressure body 16 is clamped between the accumulator spring 10 and the piston rod 36 and moves in the direction of the foot region 20 of the cylinder housing 12.
  • the pressure body 16 takes along the guide ring 14, which thus also moves in the direction of the foot region 20 of the working cylinder housing 12.
  • the pump stops.
  • the accumulator spring 10 is charged, the accumulator piston 34, the piston rod 36, the pressure body 16 and the guide ring 14 rest.
  • the guide ring 14 is axially free of force. The guide ring 14 is thus displaceable in the axial direction between the accumulator spring 10 and the pressure body 16.
  • the accumulator spring 10 is gradually relaxed and expands axially.
  • the memory spring 10 presses the pressure body 16 and thus also the piston rod 36 and the accumulator piston 34 into the bore 32 in the direction of the head region 26 of the working cylinder housing 12.
  • the pressure body 16 is clamped between the accumulator spring 10 and the piston rod 36 and moves in the direction of the head portion 26 of the cylinder housing 12 to.
  • the accumulator spring 10 takes along the guide ring 14, which thus also moves in the direction of the head region 26 of the working cylinder housing 12.
  • the guide ring 14 is axially free of force during operation of the spring-loaded drive and is thus displaceable in the axial direction between the accumulator spring 10 and the pressure body 16.
  • the accumulator spring 10 presses with its head end on the pressure body 16 and presses it against the piston rod 36.
  • a support spring 28 is provided in the head region of the accumulator spring 10.
  • the support spring 28 is part of the storage spring 10 and is rigid, that is, the support spring 28 is not or only slightly deformed during clamping and during the relaxation of the accumulator spring 10.
  • the support spring 28 is arranged so that it touches the guide ring 14 and / or the pressure body 16 at all times.
  • the support spring 28 presses the guide ring 14 against the stop 24. During clamping and during the relaxation of the accumulator spring 10, the support spring 28 presses the pressure body 16 against the piston rod 36th
  • the storage spring 10 is guided in the prestressed state and during clamping and during relaxation by means of the guide ring 14 and the pressure body 16 at its head end in the axial direction. An evasion of the head end the accumulator spring 10 in a different direction, in particular in the radial direction, is thus prevented.

Landscapes

  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Lubricants (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)

Claims (3)

  1. Entraînement hydraulique à accumulateur à ressort, comportant un cylindre de travail, lequel est disposé dans un boîtier de cylindre de travail (12), au moins un ressort accumulateur (10), au moins deux pistons de pression (34), lesquels sont respectivement disposés de manière déplaçable par glissement dans un alésage (32), et un corps de pression (16), lequel est disposé de manière concentrique autour du boîtier de cylindre de travail (12), le ressort accumulateur (10) mettant sous pression le fluide se trouvant dans les alésages (32) par le biais du corps de pression (16) et des pistons de pression (34),
    caractérisé
    en ce qu'une bague de guidage (14) est disposée radialement entre le corps de pression (16) et le boîtier de cylindre de travail (12), de telle sorte que la bague de guidage (14) soit exempte de forces axiales lorsque le ressort accumulateur (10) est tendu et lorsqu'il est détendu, et en ce que le corps de pression (16) est exempt de forces axiales lorsque le ressort accumulateur (10) est précontraint.
  2. Entraînement hydraulique à accumulateur à ressort selon la revendication 1, caractérisé en ce qu'un ressort de support (28) est disposé dans la région de tête du ressort accumulateur (10), de telle sorte qu'il soit à tout moment en contact avec la bague de guidage (14) et/ou le corps de pression (16).
  3. Entraînement hydraulique à accumulateur à ressort selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une bande de guidage (18) est insérée dans la bague de guidage (14).
EP08802713.1A 2007-10-16 2008-09-30 Mécanisme hydraulique accumulateur à ressort Active EP2198442B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007049758 2007-10-16
DE102007062291A DE102007062291A1 (de) 2007-10-16 2007-12-21 Hydraulischer Federspeicherantrieb
PCT/EP2008/008285 WO2009049768A1 (fr) 2007-10-16 2008-09-30 Mécanisme hydraulique accumulateur à ressort

Publications (2)

Publication Number Publication Date
EP2198442A1 EP2198442A1 (fr) 2010-06-23
EP2198442B1 true EP2198442B1 (fr) 2014-12-17

Family

ID=40459028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08802713.1A Active EP2198442B1 (fr) 2007-10-16 2008-09-30 Mécanisme hydraulique accumulateur à ressort

Country Status (7)

Country Link
EP (1) EP2198442B1 (fr)
JP (1) JP5512526B2 (fr)
KR (1) KR101537021B1 (fr)
CN (1) CN101933109B (fr)
DE (1) DE102007062291A1 (fr)
HU (1) HUE024572T2 (fr)
WO (1) WO2009049768A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054665B3 (de) 2010-12-15 2012-02-02 Abb Technology Ag Speichermodul für einen hydraulischen Federspeicherantrieb
RU2700766C1 (ru) * 2018-04-25 2019-09-20 Геннадий Феофанович Мамарин Газогидравлический аккумулятор

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581233U (ja) * 1981-06-29 1983-01-06 スタ−農機株式会社 農作業機における折たたみ式ツ−ルバ−の支承装置
DE3408909A1 (de) * 1984-03-10 1985-09-12 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Hydraulischer antrieb
DE4340142C2 (de) * 1993-11-25 1995-11-23 Abb Patent Gmbh Hydraulikeinrichtung zur Betätigung wenigstens eines linear beweglichen Bauteils
JPH1054215A (ja) * 1996-08-14 1998-02-24 Nippon Soken Inc 内燃機関の潤滑回路における油圧制御装置
DE19637051A1 (de) * 1996-09-12 1998-03-19 Abb Patent Gmbh Hydraulischer Antrieb
DE19637052A1 (de) * 1996-09-12 1998-03-19 Abb Patent Gmbh Hydraulischer Antrieb
KR19980039738U (ko) * 1996-12-20 1998-09-15 박병재 자동 변속기의 유압 어큐뮬레이터
CN2904263Y (zh) * 2006-05-25 2007-05-23 沈阳东华工大高压电器设备有限公司 用于高压断路器的弹簧液压操动机构
CN200969310Y (zh) * 2006-11-01 2007-10-31 宁波宏勃泵业制造有限公司 高压断路器液压操动机构
CN100517539C (zh) * 2006-12-31 2009-07-22 中国西电电气股份有限公司 高压断路器用液压碟簧储能装置

Also Published As

Publication number Publication date
KR101537021B1 (ko) 2015-07-15
CN101933109A (zh) 2010-12-29
HUE024572T2 (hu) 2016-02-29
KR20100077164A (ko) 2010-07-07
EP2198442A1 (fr) 2010-06-23
JP2011501057A (ja) 2011-01-06
CN101933109B (zh) 2013-08-28
JP5512526B2 (ja) 2014-06-04
WO2009049768A1 (fr) 2009-04-23
DE102007062291A1 (de) 2009-04-23

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