ATE125336T1 - HYDRAULIC CYLINDER. - Google Patents

HYDRAULIC CYLINDER.

Info

Publication number
ATE125336T1
ATE125336T1 AT92113537T AT92113537T ATE125336T1 AT E125336 T1 ATE125336 T1 AT E125336T1 AT 92113537 T AT92113537 T AT 92113537T AT 92113537 T AT92113537 T AT 92113537T AT E125336 T1 ATE125336 T1 AT E125336T1
Authority
AT
Austria
Prior art keywords
cylinder
damping
hydraulic medium
closing part
piston
Prior art date
Application number
AT92113537T
Other languages
German (de)
Inventor
Josef Bueter
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
Application granted granted Critical
Publication of ATE125336T1 publication Critical patent/ATE125336T1/en

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

A hydraulic cylinder with end-position damping comprises a working piston (4) which moves in a working cylinder (2) between two pressure spaces (6, 6%) and on both sides of which in each case a centrally projecting damping extension (9, 9%) is provided which, before the respective end of stroke is reached, can be inserted in a slidable manner into a receiving bore (8) in the area of a respective cylinder-closing part (3) in such a way as to choke a direct discharge of the hydraulic medium. In a spring space (29, 29%) of the working piston (4) which can be filled with the hydraulic medium, a damping piston (23, 23%) supported in a slidable manner against a spring element (25, 25%) is arranged in the area of the damping extension (9, 9%), in the front area of which damping piston (23, 23%) a choke groove (33, 33%; 42, 42%) is provided, and the end face (32, 32%) of which, at least in certain areas, can be brought into supporting engagement at the cylinder-closing part (3), separating the hydraulic medium in the receiving bore (8) of the cylinder-closing part (3) and in the spring space (29, 29%) from that in the respective pressure space (6, 6%), so that the choke groove (33, 33%; 42, 42%) forms the only flow connection for the separated hydraulic medium. <IMAGE>
AT92113537T 1991-09-05 1992-08-08 HYDRAULIC CYLINDER. ATE125336T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9111009U DE9111009U1 (en) 1991-09-05 1991-09-05

Publications (1)

Publication Number Publication Date
ATE125336T1 true ATE125336T1 (en) 1995-08-15

Family

ID=6870949

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92113537T ATE125336T1 (en) 1991-09-05 1992-08-08 HYDRAULIC CYLINDER.

Country Status (3)

Country Link
EP (1) EP0530541B1 (en)
AT (1) ATE125336T1 (en)
DE (2) DE9111009U1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647472A1 (en) * 1996-11-16 1998-05-20 Zahnradfabrik Friedrichshafen Pneumatic or hydraulic servomotor with a shutdown device
NL1019112C2 (en) * 2001-10-04 2003-04-07 Actuant Corp Hydraulic drive cylinder with end position damping, contains movable closure ring which can combine with end piece to form outlet channel for hydraulic fluid
DE10246766B3 (en) * 2002-10-07 2004-07-01 Bosch Rexroth Ag Pneumatic cylinder damped in the end position
CN102108990B (en) * 2010-07-23 2011-12-28 三一重工股份有限公司 Hydraulic cylinder and related devices thereof, hydraulic buffer system, excavator and concrete pump truck
US11067104B1 (en) * 2020-11-16 2021-07-20 Caterpillar Inc. Integrated cylinder piston and bearing as a hydraulic cushion
CN114054705B (en) * 2021-11-15 2023-06-13 马鞍山钢铁股份有限公司 Crystallizer liquid level stability control method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668975A (en) * 1970-10-13 1972-06-13 Int Harvester Co Decelerator means for expansible chamber device
DE2336066A1 (en) * 1973-07-16 1975-02-06 Wabco Westinghouse Gmbh Pneumatic positioner - plunger operating within hollow secondary piston with restricted port connections
US4250793A (en) * 1978-11-20 1981-02-17 Caterpillar Tractor Co. Cushioning device for fluid jacks
US4425836A (en) * 1981-02-20 1984-01-17 Government Innovators, Inc. Fluid pressure motor
DE3415829C2 (en) * 1984-04-27 1986-07-17 Emil Weber Fabrik für Ölhydraulik GmbH & Co, 7129 Güglingen End position cushioning for a hydraulic cylinder
DE3517564A1 (en) * 1985-05-15 1986-11-20 Friedrich 4970 Bad Oeynhausen Freimuth Device for moving loads
GB2186949A (en) * 1986-01-23 1987-08-26 Bespak P L C A flow control device

Also Published As

Publication number Publication date
EP0530541B1 (en) 1995-07-19
DE9111009U1 (en) 1993-01-14
EP0530541A1 (en) 1993-03-10
DE59202934D1 (en) 1995-08-24

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