EP0779435A3 - Hydraulic power cylinder - Google Patents

Hydraulic power cylinder Download PDF

Info

Publication number
EP0779435A3
EP0779435A3 EP96119960A EP96119960A EP0779435A3 EP 0779435 A3 EP0779435 A3 EP 0779435A3 EP 96119960 A EP96119960 A EP 96119960A EP 96119960 A EP96119960 A EP 96119960A EP 0779435 A3 EP0779435 A3 EP 0779435A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic power
power cylinder
blocking bolt
region
damping
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
Application number
EP96119960A
Other languages
German (de)
French (fr)
Other versions
EP0779435A2 (en
EP0779435B1 (en
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.)
Buemach Engineering International BV
Original Assignee
HYDRAULIK TECHNIEK
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 HYDRAULIK TECHNIEK filed Critical HYDRAULIK TECHNIEK
Publication of EP0779435A2 publication Critical patent/EP0779435A2/en
Publication of EP0779435A3 publication Critical patent/EP0779435A3/en
Application granted granted Critical
Publication of EP0779435B1 publication Critical patent/EP0779435B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Abstract

The working cylinder has a blocking bolt (9) in the shape of a hollow tube (10) which projects into a cylinder chamber (2) in a damping region (7). The blocking bolt is axially displaceable against a stop (15) and is held in position by a compression spring (30). In the damping position at the edge of the region (16) of a hydraulic connection (6) the blocking bolt makes a sealing engagement in the manner of a valve body.
EP96119960A 1995-12-16 1996-12-12 Hydraulic power cylinder Expired - Lifetime EP0779435B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29519991U DE29519991U1 (en) 1995-12-16 1995-12-16 Hydraulic working cylinder
DE29519991U 1995-12-16

Publications (3)

Publication Number Publication Date
EP0779435A2 EP0779435A2 (en) 1997-06-18
EP0779435A3 true EP0779435A3 (en) 1998-07-29
EP0779435B1 EP0779435B1 (en) 2001-11-14

Family

ID=8016834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119960A Expired - Lifetime EP0779435B1 (en) 1995-12-16 1996-12-12 Hydraulic power cylinder

Country Status (5)

Country Link
EP (1) EP0779435B1 (en)
AT (1) ATE208858T1 (en)
DE (2) DE29519991U1 (en)
DK (1) DK0779435T3 (en)
ES (1) ES2168431T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004011993U1 (en) * 2004-07-30 2005-12-08 Liebherr-Werk Nenzing Ges.M.B.H. Damping system especially for hydraulic cylinders has a coaxial construction with progressive restriction of the connection between the supply duct and the pressure side of the piston
DE202020004533U1 (en) 2020-10-28 2022-02-04 Bümach Engineering International B.V. End position cushioned working cylinder

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338845A (en) * 1941-10-10 1944-01-11 Curtiss Wright Corp Hydraulic piston snubber
DE1241712B (en) * 1963-06-26 1967-06-01 Hydraulik Rochlitz Veb Braking for hydraulic or pneumatic devices, preferably for working cylinders with only simply guided piston rod
US3419114A (en) * 1967-09-18 1968-12-31 Houdaille Industries Inc Hydraulic action devices with inertia insensitive snubbing circuit
CH551570A (en) * 1974-03-04 1974-07-15 Bbc Brown Boveri & Cie HYDRAULIC DRIVE, IN PARTICULAR FOR ELECTRIC SWITCHGEAR.
FR2411988A1 (en) * 1977-12-15 1979-07-13 Licentia Gmbh HYDRAULIC CYLINDER WITH ADJUSTABLE CUSHIONING
DE3445481A1 (en) * 1983-12-16 1985-06-27 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Hydraulic cylinder unit
DE4428648A1 (en) * 1993-12-09 1995-06-14 Smc Corp Rodless cylinder with speed control mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338845A (en) * 1941-10-10 1944-01-11 Curtiss Wright Corp Hydraulic piston snubber
DE1241712B (en) * 1963-06-26 1967-06-01 Hydraulik Rochlitz Veb Braking for hydraulic or pneumatic devices, preferably for working cylinders with only simply guided piston rod
US3419114A (en) * 1967-09-18 1968-12-31 Houdaille Industries Inc Hydraulic action devices with inertia insensitive snubbing circuit
CH551570A (en) * 1974-03-04 1974-07-15 Bbc Brown Boveri & Cie HYDRAULIC DRIVE, IN PARTICULAR FOR ELECTRIC SWITCHGEAR.
FR2411988A1 (en) * 1977-12-15 1979-07-13 Licentia Gmbh HYDRAULIC CYLINDER WITH ADJUSTABLE CUSHIONING
DE3445481A1 (en) * 1983-12-16 1985-06-27 E.A. Storz Gmbh & Co Kg, 7200 Tuttlingen Hydraulic cylinder unit
DE4428648A1 (en) * 1993-12-09 1995-06-14 Smc Corp Rodless cylinder with speed control mechanism

Also Published As

Publication number Publication date
DE59608194D1 (en) 2001-12-20
ES2168431T3 (en) 2002-06-16
DK0779435T3 (en) 2002-03-11
ATE208858T1 (en) 2001-11-15
EP0779435A2 (en) 1997-06-18
EP0779435B1 (en) 2001-11-14
DE29519991U1 (en) 1997-04-10

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