EP0961037A1 - Verrouillage en position déployée pour vérins hydrauliques - Google Patents

Verrouillage en position déployée pour vérins hydrauliques Download PDF

Info

Publication number: EP0961037A1
Authority: EP; European Patent Office
Prior art keywords: locking; piston; end position; cylinder; hydraulic working
Prior art date: 1998-05-29
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

Application number

EP99105840A

Other languages

German (de)

English (en)

Other versions

EP0961037B1 (fr

Inventor

Josef Büter

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.)

Bumach Engineering International BV

Original Assignee

Bumach Engineering International BV

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.)

1998-05-29

Filing date

1999-03-23

Publication date

1999-12-01

1999-03-23 Application filed by Bumach Engineering International BV filed Critical Bumach Engineering International BV

1999-12-01 Publication of EP0961037A1 publication Critical patent/EP0961037A1/fr

2005-05-11 Application granted granted Critical

2005-05-11 Publication of EP0961037B1 publication Critical patent/EP0961037B1/fr

2019-03-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions

Definitions

the invention relates to a hydraulic end position lock Working cylinders, in particular plunger cylinders and Differential working cylinder with a guide side too Locking in the higher pressure range.
the invention can be used in all areas of fluid technology at which in the end positions of the working cylinder is mechanical Lock is necessary.
Piston rod ratio PHI is hydraulic Working cylinders in the range from 1.6 to 2.5.
the commonly used balls therefore have opposite locking elements pressing in surface contact fundamental disadvantage at high pressures due to the maximum permissible material load limits.
a lockable working cylinder with a few is known movable locking parts from the publication DE3732561C2.
a locking piston which is connected to a spring is biased within the working piston.
This principle is, however, for constructional reasons only for the bottom Locks can be used, since the guide side in the Piston rod no locking piston can be integrated.
Balls are exclusively used as locking elements Balls applicable, with the disadvantage of the same line contact when blocked and therefore extremely high Hertzian Pressing, which makes this system only at low hydraulic Pressing is applicable.
the object of the invention is to implement a End position locking that can be used on the guide and / or bottom side a working cylinder.
Essential aspects provide separate modular lock units and a optional use of the piston rod for additional System solutions.
Another essential aspect lies in the usability of this realization also for the higher one Pressure range, as well as in the exclusion of function-inhibiting Leakage problems.
the essence of the invention lies in the complete integration of the piston and the end position lock required Construction parts, - the locking elements, the prestressed Locking piston and the locking element carrier - Within the annulus between the piston rod and cylinder. With differential working cylinders is one such an arrangement is mirrored on the piston.
the locking elements engage in the cylinder inner jacket - preferably in the area of the caps - a.
the locking elements are released when the pressure builds up in the work area by axial movement of the locking piston against the preload of the locking piston spring.
the locking piston is forced at infinitessimal axial movement of the piston - mediated via axially inclined contact surfaces of the locking element for the recess in the cylinder - the complete pushing in of the locking elements in the annular space between the piston rod and cylinder.
the locking element carrier 7 is connected to the piston 1 and between it and the end position to be locked on the piston rod 2 arranged. It partially contributes to the axial guidance of the piston 1 in cylinder 3 and includes in corresponding Clear one or more locking piston springs 5, which the compressive preload on the piston rod 2 axially Movable locking piston 6 generated when the Locking piston 6 - by the pressure of the working medium on its surface oriented towards the end position - the piston 1 is approaching.
the locking piston 6 has on its outer jacket a chamfer 10, which the locking elements 4th form-fitting between the recesses 8 and the locking element carrier 7 locked when the end position of the piston 1 is achieved by the approach of the piston 1 radial preload built up to the end position Shift to the outside of the locking elements 4 in the Forcing recess 8.
the contact surface forms the locking elements 4 with the recess 8 a slight axial bevel 11.
the locking elements 4 are advantageously designed as circular segments, which in the recesses 8 a surface pressure is achieved.
Advantageous is the space of the locking piston spring 5 over a thin channel 12 with a valve 13 with each connected to another, pressure-free work space, which also if there is a leak, always relax this room given is.

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Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Actuator (AREA)
Vehicle Body Suspensions (AREA)
Soil Working Implements (AREA)
Fluid-Damping Devices (AREA)
Chairs Characterized By Structure (AREA)
Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

EP99105840A 1998-05-29 1999-03-23 vérin hydraulique avec verrouillage en position déployée Expired - Lifetime EP0961037B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE29809717U DE29809717U1 (de)	1998-05-29	1998-05-29	Endlagenverriegelung hydraulischer Arbeitszylinder
DE29809717U		1998-05-29

Publications (2)

Publication Number	Publication Date
EP0961037A1 true EP0961037A1 (fr)	1999-12-01
EP0961037B1 EP0961037B1 (fr)	2005-05-11

Family

ID=8057879

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99105840A Expired - Lifetime EP0961037B1 (fr)	1998-05-29	1999-03-23	vérin hydraulique avec verrouillage en position déployée

Country Status (3)

Country	Link
EP (1)	EP0961037B1 (fr)
AT (1)	ATE295483T1 (fr)
DE (2)	DE29809717U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE29920657U1 (de)	1999-11-24	2000-02-24	Bümach Engineering International B.V., Emmen	Endlagengeber für pneumatisch oder hydraulisch wirkende Arbeitszylinder mit Endlagenverriegelung
DE102010024268A1 (de) *	2010-06-18	2011-12-22	Liebherr-Aerospace Lindenberg Gmbh	Zylindereinheit mit Verriegelungseinheit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE719409C (de) *	1937-11-27	1942-04-07	Messerschmitt Boelkow Blohm	Verstellstrebe fuer Flugzeuge
FR896839A (fr) *	1942-09-07	1945-03-05	Ver Deutsche Metallwerke Ag	Dispositif pour verrouiller les cylindres de travail à bord des avions
CH353428A (de) *	1957-06-04	1961-04-15	Sprecher & Schuh Ag	Druckmittelbetätigter Antrieb für elektrische Schaltgeräte
FR2348384A2 (fr) *	1976-04-17	1977-11-10	Wabco Westinghouse Gmbh	Verin pneumatique a double effet avec dispositif d'arret progressif
EP0309803A1 (fr) *	1987-09-17	1989-04-05	Gerhard Hillen	Dispositif pneumatique à mouvement rectuligne avec un ensemble piston et cylindre

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1114753A (fr)	1978-11-27	1981-12-22	James D. Helm	Dispositif de verrouillage
DE3730808A1 (de)	1987-09-14	1989-03-23	Heb Hydraulik Elementebau Gmbh	Verriegelungsvorrichtung fuer hydraulische oder pneumatische arbeitszylinder
JPH02292504A (ja)	1989-05-01	1990-12-04	Teijin Seiki Co Ltd	ロック機構付液圧アクチュエータ
DE4107980A1 (de)	1991-03-13	1992-09-17	Bosch Gmbh Robert	Hydraulisch betaetigte rasteinrichtung

1998
- 1998-05-29 DE DE29809717U patent/DE29809717U1/de not_active Expired - Lifetime
1999
- 1999-03-23 EP EP99105840A patent/EP0961037B1/fr not_active Expired - Lifetime
- 1999-03-23 AT AT99105840T patent/ATE295483T1/de not_active IP Right Cessation
- 1999-03-23 DE DE59912030T patent/DE59912030D1/de not_active Expired - Lifetime

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE719409C (de) *	1937-11-27	1942-04-07	Messerschmitt Boelkow Blohm	Verstellstrebe fuer Flugzeuge
FR896839A (fr) *	1942-09-07	1945-03-05	Ver Deutsche Metallwerke Ag	Dispositif pour verrouiller les cylindres de travail à bord des avions
CH353428A (de) *	1957-06-04	1961-04-15	Sprecher & Schuh Ag	Druckmittelbetätigter Antrieb für elektrische Schaltgeräte
FR2348384A2 (fr) *	1976-04-17	1977-11-10	Wabco Westinghouse Gmbh	Verin pneumatique a double effet avec dispositif d'arret progressif
EP0309803A1 (fr) *	1987-09-17	1989-04-05	Gerhard Hillen	Dispositif pneumatique à mouvement rectuligne avec un ensemble piston et cylindre

Also Published As

Publication number	Publication date
ATE295483T1 (de)	2005-05-15
DE29809717U1 (de)	1998-08-20
EP0961037B1 (fr)	2005-05-11
DE59912030D1 (de)	2005-06-16

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1999-12-06	ITCL	It: translation for ep claims filed	Representative=s name: JACOBACCI CASETTA & PERANI S.P.A.
1999-12-22	GBC	Gb: translation of claims filed (gb section 78(7)/1977)
2000-02-01	TCNL	Nl: translation of patent claims filed
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2004-10-20	RTI1	Title (correction)	Free format text: HYDRAULIC ACTUATOR WITH LOCKING MECHANISM FOR END OF TRAVEL
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