EP2198442A1 - Hydraulic spring-loaded drive - Google Patents
Hydraulic spring-loaded driveInfo
- Publication number
- EP2198442A1 EP2198442A1 EP08802713A EP08802713A EP2198442A1 EP 2198442 A1 EP2198442 A1 EP 2198442A1 EP 08802713 A EP08802713 A EP 08802713A EP 08802713 A EP08802713 A EP 08802713A EP 2198442 A1 EP2198442 A1 EP 2198442A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- pressure body
- pressure
- guide ring
- working cylinder
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 230000002040 relaxant effect Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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.
- 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 in prestressed storage spring, the pressure body is 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 A hydraulic spring accumulator drive according to the invention.
- FIG. 1 an inventive hydraulic spring accumulator drive is shown in a sectional view at pressure-less 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 end, on a guide ring 14 and presses it against a stop 24.
- the stop 24 is located in the vicinity of the head portion 26 of the working 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 level of the stopper 24. A radial force offset between the force exerted by the accumulator spring 10 and the counterforce 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 At which the storage spring 12 facing the end of the plunger 34 is 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 storage 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)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049758 | 2007-10-16 | ||
DE102007062291A DE102007062291A1 (en) | 2007-10-16 | 2007-12-21 | Hydraulic spring accumulator drive |
PCT/EP2008/008285 WO2009049768A1 (en) | 2007-10-16 | 2008-09-30 | Hydraulic spring-loaded drive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2198442A1 true EP2198442A1 (en) | 2010-06-23 |
EP2198442B1 EP2198442B1 (en) | 2014-12-17 |
Family
ID=40459028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08802713.1A Active EP2198442B1 (en) | 2007-10-16 | 2008-09-30 | Hydraulic spring-loaded drive |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2198442B1 (en) |
JP (1) | JP5512526B2 (en) |
KR (1) | KR101537021B1 (en) |
CN (1) | CN101933109B (en) |
DE (1) | DE102007062291A1 (en) |
HU (1) | HUE024572T2 (en) |
WO (1) | WO2009049768A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010054665B3 (en) | 2010-12-15 | 2012-02-02 | Abb Technology Ag | Storage module for a hydraulic spring-loaded drive |
RU2700766C1 (en) * | 2018-04-25 | 2019-09-20 | Геннадий Феофанович Мамарин | Gas-hydraulic accumulator |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS581233U (en) * | 1981-06-29 | 1983-01-06 | スタ−農機株式会社 | Support device for folding tool bar in agricultural machinery |
DE3408909A1 (en) * | 1984-03-10 | 1985-09-12 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | HYDRAULIC DRIVE |
DE4340142C2 (en) * | 1993-11-25 | 1995-11-23 | Abb Patent Gmbh | Hydraulic device for actuating at least one linearly movable component |
JPH1054215A (en) * | 1996-08-14 | 1998-02-24 | Nippon Soken Inc | Hydraulic pressure controller in lubrication circuit of internal combustion engine |
DE19637051A1 (en) * | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulic drive |
DE19637052A1 (en) * | 1996-09-12 | 1998-03-19 | Abb Patent Gmbh | Hydraulic drive |
KR19980039738U (en) * | 1996-12-20 | 1998-09-15 | 박병재 | Hydraulic accumulator of automatic transmission |
CN2904263Y (en) * | 2006-05-25 | 2007-05-23 | 沈阳东华工大高压电器设备有限公司 | Spring hydraulic operating mechanism for high voltage circuit breaker |
CN200969310Y (en) * | 2006-11-01 | 2007-10-31 | 宁波宏勃泵业制造有限公司 | Hydraulic operation structure of high-voltage breaker |
CN100517539C (en) * | 2006-12-31 | 2009-07-22 | 中国西电电气股份有限公司 | Hydraulic pressure disc spring energy storing device for high-voltage breaker |
-
2007
- 2007-12-21 DE DE102007062291A patent/DE102007062291A1/en not_active Withdrawn
-
2008
- 2008-09-30 EP EP08802713.1A patent/EP2198442B1/en active Active
- 2008-09-30 KR KR1020107008104A patent/KR101537021B1/en active IP Right Grant
- 2008-09-30 CN CN200880111985.8A patent/CN101933109B/en active Active
- 2008-09-30 WO PCT/EP2008/008285 patent/WO2009049768A1/en active Application Filing
- 2008-09-30 JP JP2010529262A patent/JP5512526B2/en active Active
- 2008-09-30 HU HUE08802713A patent/HUE024572T2/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2009049768A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR101537021B1 (en) | 2015-07-15 |
CN101933109A (en) | 2010-12-29 |
HUE024572T2 (en) | 2016-02-29 |
KR20100077164A (en) | 2010-07-07 |
JP2011501057A (en) | 2011-01-06 |
CN101933109B (en) | 2013-08-28 |
JP5512526B2 (en) | 2014-06-04 |
WO2009049768A1 (en) | 2009-04-23 |
EP2198442B1 (en) | 2014-12-17 |
DE102007062291A1 (en) | 2009-04-23 |
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