EP0983442B1 - Dispositif d'actionnement a commande manuelle d'urgence - Google Patents

Dispositif d'actionnement a commande manuelle d'urgence Download PDF

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Publication number
EP0983442B1
EP0983442B1 EP98919119A EP98919119A EP0983442B1 EP 0983442 B1 EP0983442 B1 EP 0983442B1 EP 98919119 A EP98919119 A EP 98919119A EP 98919119 A EP98919119 A EP 98919119A EP 0983442 B1 EP0983442 B1 EP 0983442B1
Authority
EP
European Patent Office
Prior art keywords
actuator
housing
separating piston
actuation device
opening
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
EP98919119A
Other languages
German (de)
English (en)
Other versions
EP0983442A1 (fr
Inventor
Stefan Rothhaar
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.)
Hydac Fluidtechnik GmbH
Original Assignee
Hydac Fluidtechnik GmbH
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 Hydac Fluidtechnik GmbH filed Critical Hydac Fluidtechnik GmbH
Publication of EP0983442A1 publication Critical patent/EP0983442A1/fr
Application granted granted Critical
Publication of EP0983442B1 publication Critical patent/EP0983442B1/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/10—Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure

Definitions

  • the invention relates to an actuating device for a hydraulic controllable actuator, in particular for its emergency actuation with a Housing, which has a fluid storage chamber, which has a connection point to the actuator and via another connection point to a hydraulic Supply circuit of the actuator can be connected, wherein within the Fluid storage chamber via a manually operated adjustment device longitudinally displaceable a separating piston is guided, which is a control device for has a passage opening connecting the connection points.
  • hydraulically controllable actuator fails, usually Form of a hydraulically operated cylinder, for example by Power failure, this can usually no longer be operated, which in particular in safety-relevant areas, such as in nuclear power plants or the like, can lead to dangerous interference.
  • safety-relevant areas such as in nuclear power plants or the like.
  • independent emergency supply systems in the event of emergency operating situations to start; However, these are expensive and complex in the Realization and are usually so far from the point of failure, that the emergency operation by the operator is no longer immediate can be monitored.
  • DE 33 44 132 C2 is an actuating device for one hydraulically controllable actuator known with a housing that a Fluid storage chamber, which has a connection point to the actuator and connected to a supply circuit via another connection point is, within the fluid storage chamber via a manually operable Adjustment device in the form of a pump arm longitudinally displaceable Separating piston is guided with a mechanically separately operating control device in the form of a sliding piston for the fluid connection points interconnecting passage opening cooperates.
  • the adjusting device is an adjustment screw that can be screwed into and out of the housing, whose screw-in distance is selected such that the one interacting with it Separating piston between two end positions is movable, and that the passage opening the separating piston has a check valve as a control device, opened in one or the other end position and in the each associated opposite end position is closed, the Check valve mentioned in the end positions via the separating piston mechanically positively controlled and thus functionally operated, the Separating piston in turn by a single infeed movement using the adjusting screw the respective end position is defined. So there is one mechanically defined coupling between adjusting screw, separating piston and Check valve is given, which is extremely reliable and therefore special suitable for emergency actuation of the actuator.
  • the actuating device according to the invention consists of only a few components and can therefore be realized easily and inexpensively.
  • Manually operated setting device can be the setting process and therefore the function of the actuated actuator by the operator exactly on site monitor. Incorrect controls are avoided. Because the in the fluid storage chamber sufficient oil is sufficient, an external supply of Control fluid not necessary. Fluid control via the actuator takes place without oil leakage, so that a functionally safe emergency actuation of Hand is guaranteed.
  • the actuating device is used for the emergency actuation of a hydraulically controllable actuator 10 in the form of a spring-loaded hydraulic working cylinder 12.
  • the actuator is with a Provided housing 14 which has a fluid storage chamber 16 which via a Connection point 18 to the actuator 10 and via another connection point 20 to a hydraulic supply circuit designated as a whole by 22 for the actuator 10 is connectable.
  • a manually operable adjusting device 24 Is inside the fluid storage chamber 16 via a manually operable adjusting device 24 a longitudinally displaceable Separating piston 26 guided, the one control device 28 for the connection points 18, 20 interconnecting passage opening 30.
  • the manually operable setting device 24 consists essentially of an adjusting screw 32 which can be screwed in and out of the housing 14, the possible screw-in distance is chosen such that the one interacting with it Separating piston 26 is longitudinally displaceable between two end positions A, B. is.
  • the passage opening 30 of the separating piston 26 has as a control device 28 a spring-loaded check valve 34, which in one or the other End positions A, B open and in the respectively assigned opposite End position B or A is closed.
  • the free end 36 of the adjusting screw 32 engages in the separating piston 26 a, between this free end 36 and the screw head 38 on the housing 14 a lock nut penetrated by the adjusting screw 32 40 supports.
  • the housing 14 is designed in the manner of a screw-in cartridge 42 and can have a corresponding external thread in an internal thread universally screwed into control blocks or similar and be removed from there.
  • control parts 44 or 46 of the housing 14 in an end position A or B which Control device 28 with the passage opening 30 open.
  • FIGS. 1 and 2 show the respective supply circuit 22 a hydraulic pump 48, a switching valve 50 in the form of an electric 3/2-way valves which can be actuated and reset with a spring, as well as a Tank connection 52 on.
  • the two connection points 18, 20 are therefore between a supply line 54 between the supply circuit 22 and the Actuator 10 switched.
  • the separating piston 26 has a centering opening 56 on, which serves the frontal engagement of the adjusting screw 32, the has an end-shaped pin 58 for this purpose.
  • the centering opening 56 via a plug 60 with a circumferential ring seal 62 sealed.
  • the separating piston 26 is longitudinally displaceable within the fluid storage chamber 16 guided and seals two chamber areas via a further ring seal 64 66 and 68 in the fluid storage chamber 16 from each other.
  • the check valve 34 is in the embodiment of FIGS. 1 and 2 against the spring force via a protruding downward as viewed in FIG. 1 Ring flange 70 opened and thus gives the flow path Passage opening 30 free.
  • the delivery path for the blocking check valve 34 runs parallel to the longitudinal direction of the possible infeed movement for the adjusting screw 32.
  • the hydraulic pump 48 fails, for example due to a power failure, is the return spring of the working cylinder 12 this in its in Fig. 1 move automatically shown starting position. Furthermore, in the event of a power failure, the directional control valve 50 into the one shown in FIGS. 1 and 2 Move switching position, i.e. the hydraulic pump 48 would be from the supply line 54 cordoned off. Now the adjusting screw 32 in the housing 14 screwed in, the check valve 34 is first closed thereby shutting off the flow via the supply line 54 to the tank connection 52 and therefore to prevent pressure oil losses. That in the fluid storage chamber 16 fluid is stored during this feed movement of the separating piston 26 is pushed out of the chamber region 68 into its lower end position B.
  • the position of the adjusting screw 32 shows how this is shown in Fig. 2, clearly and immediately indicates that emergency manual operation is present. The function check is therefore very easy to carry out and clearly recognizable.
  • the adjusting screw 32 is here over its entire Provide outer circumference with an external thread that in the associated Internal thread of the housing 14 engages.
  • normal operation is thereby ensures that the separating piston 26, as shown, in the lower end position B has arrived.
  • the direction of opening for the check valve is 34 reversed, i.e. it is now over its tax peg from opened a boundary surface of the lower part 46 of the housing 14.
  • normal operation is given when the adjusting screw 32 is fully screwed in.
  • the emergency operating function would then be given here if the Adjusting screw 32 is screwed out of the housing 14 via the screw head 38 would be.
  • the separating piston 26 would then go up carried along and by closing the check valve 34, the passage opening 30 can be controlled. That about the spring of the actuator 10 in the Chamber 68 controlled fluid then allows the emergency actuation of the cylinder in the other direction.
  • the adjusting screw 32 can also be made in one piece with the end-shaped pin 58 and be connected to the sealing plug 60.
  • the present actuating device can be constructed modularly different oil volumes are also provided depending on the type of consumer be, with an adjustment of the available volume of the Fluid storage chamber 16 takes place in this regard.
  • the structure described is constructively simple and inexpensive to implement. Has been particularly advantageous the actuating device according to the invention when used in industrial trucks, especially with forklift trucks, proven where it comes to Failure of the engine to still be able to release the parking brake.

Claims (7)

  1. Dispositif d'actionnement pour un actionneur (10) à commande hydraulique, en particulier pour son actionnement d'urgence, comprenant un boítier (14) qui présente un compartiment de stockage de fluide (16) qui peut être raccordé par une zone de raccordement (18) à l'actionneur (10) et par une autre zone de raccordement (20) à un circuit d'alimentation hydraulique (22) de l'actionneur (10), un piston de séparation (26) étant monté à l'intérieur du compartiment de stockage de fluide (16) de façon à pouvoir coulisser en longueur au moyen d'un dispositif de réglage à actionnement manuel (24), lequel présente un dispositif de commande (28) pour une ouverture de passage (30) reliant les zones de raccordement (18, 20) l'une à l'autre, caractérisé en ce que le dispositif de réglage (24) est une vis de réglage (32) pouvant entrer et sortir par vissage à l'intérieur et à l'extérieur du boítier (14), dont la longueur de vissage est choisie de telle sorte que le piston de séparation (26) concourant avec celle-ci peut être déplacé entre deux positions d'extrémité (A, B), et en ce que l'ouverture de passage (30) du piston de séparation (26) présente comme dispositif de commande (28) une soupape de retenue (34), laquelle est ouverte dans l'une ou l'autre des positions d'extrémité (A, B) et est fermée dans la position d'extrémité en opposition correspondante (B, A).
  2. Dispositif d'actionnement selon la revendication 1, caractérisé en ce que la vis de réglage (32) est en about avec son extrémité libre (36) contre le piston de séparation (26) ou s'engrène dans celui-ci, et en ce que, entre l'extrémité libre (36) et la tête de la vis (38), un contre-écrou (40) traversé par la vis de réglage (32) prend appui sur le boítier (14).
  3. Dispositif d'actionnement selon une des revendications 1 ou 2, caractérisé en ce que le boítier (14) est réalisé à la manière d'une cartouche de vissage (42), et en ce que des parties (44, 46) de ce boítier (14) dans une position d'extrémité (A, B) agissent sur le dispositif de commande (28) en libérant l'ouverture de passage (30).
  4. Dispositif d'actionnement selon une des revendications 1 à 3, caractérisé en ce que l'actionneur (10) est formé à partir d'un vérin de travail hydraulique à ressort (12).
  5. Dispositif d'actionnement selon une des revendications 1 à 4, caractérisé en ce que le circuit d'alimentation (22) comprend au moins une pompe hydraulique (48), une soupape de commande (50) et un raccord de ravitaillement (52).
  6. Dispositif d'actionnement selon une des revendications 1 à 5, caractérisé en ce que les deux zones de raccordement (18, 20) sont montées entre une conduite d'alimentation (54) entre le circuit d'alimentation (22) et l'actionneur (10).
  7. Dispositif d'actionnement selon une des revendications 1 à 6, caractérisé en ce que le piston de séparation (26) présente une ouverture de centrage (56) qui sert à l'engrènement du côté avant du dispositif de commande (24) et qui est fermée de manière étanche au moyen d'un bouchon de fermeture (60).
EP98919119A 1997-05-22 1998-03-19 Dispositif d'actionnement a commande manuelle d'urgence Expired - Lifetime EP0983442B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19721404 1997-05-22
DE19721404A DE19721404C2 (de) 1997-05-22 1997-05-22 Betätigungsvorrichtung mit Nothandbetätigung
PCT/EP1998/001616 WO1998053213A1 (fr) 1997-05-22 1998-03-19 Dispositif d'actionnement a commande manuelle d'urgence

Publications (2)

Publication Number Publication Date
EP0983442A1 EP0983442A1 (fr) 2000-03-08
EP0983442B1 true EP0983442B1 (fr) 2002-12-18

Family

ID=7830172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98919119A Expired - Lifetime EP0983442B1 (fr) 1997-05-22 1998-03-19 Dispositif d'actionnement a commande manuelle d'urgence

Country Status (6)

Country Link
US (1) US6220142B1 (fr)
EP (1) EP0983442B1 (fr)
JP (1) JP4098370B2 (fr)
AT (1) ATE230072T1 (fr)
DE (2) DE19721404C2 (fr)
WO (1) WO1998053213A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10219718B4 (de) * 2002-05-02 2007-06-06 Sauer-Danfoss Aps Hydraulische Ventilanordnung
KR101323137B1 (ko) 2013-03-27 2013-10-30 주식회사 플로우버스 비상작동 장치가 내부에 설치된 액추에이터

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1323168A (en) * 1919-11-25 Tire-pump
US1347434A (en) * 1919-02-18 1920-07-20 Seth S Avery Air-pump
US1416445A (en) * 1920-10-25 1922-05-16 Burd George Pump
DE745289C (de) * 1937-03-16 1944-06-15 Alessandro Calzoni Sa Hydraulische Kraftuebertragung mit zwei Sendern
GB911340A (en) * 1961-04-20 1962-11-28 Fawick Corp Remote control hydraulic system
FR1392507A (fr) * 1963-11-12 1965-03-19 D Expl Des Moyens De Transp So Soupape de fond de wagon-citerne avec système hydraulique de commande manuelle
US3298315A (en) * 1964-11-05 1967-01-17 Outboard Marine Corp Series connected pumping system
US3787149A (en) * 1971-03-24 1974-01-22 G Levey Pump for zinc-rich materials or the like
US4460152A (en) * 1982-12-15 1984-07-17 Philadelphia Gear Corporation Hand pump with automatic lock-out
SE446057B (sv) * 1983-04-22 1986-08-11 Lars Erik Carlander Anordning vid stelldon for reglering av exv hojdinstellningen av arbetsplatser
DE4141146C2 (de) * 1991-12-13 1994-05-11 Daimler Benz Ag Hilfsbetätigungseinrichtung für ein fluidisch steuerbares Stellelement
US5201639A (en) * 1992-03-03 1993-04-13 Reineck Donald R In-line hand pump device
DE4304786A1 (de) * 1993-02-17 1994-08-18 Zeolith Tech Handbetätigbare Vakuumpumpe

Also Published As

Publication number Publication date
EP0983442A1 (fr) 2000-03-08
JP2001525912A (ja) 2001-12-11
ATE230072T1 (de) 2003-01-15
JP4098370B2 (ja) 2008-06-11
DE19721404A1 (de) 1998-11-26
WO1998053213A1 (fr) 1998-11-26
DE59806731D1 (de) 2003-01-30
DE19721404C2 (de) 1999-07-22
US6220142B1 (en) 2001-04-24

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