ATE396342T1 - HYDRAULIC CYLINDER WITH END POSITION DAMPING - Google Patents
HYDRAULIC CYLINDER WITH END POSITION DAMPINGInfo
- Publication number
- ATE396342T1 ATE396342T1 AT05014290T AT05014290T ATE396342T1 AT E396342 T1 ATE396342 T1 AT E396342T1 AT 05014290 T AT05014290 T AT 05014290T AT 05014290 T AT05014290 T AT 05014290T AT E396342 T1 ATE396342 T1 AT E396342T1
- Authority
- AT
- Austria
- Prior art keywords
- piston
- ring
- hydraulic cylinder
- end position
- zone
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubricants (AREA)
Abstract
The hydraulic cylinder (1), with a piston (14) and a pressure zone (5) for the hydraulic medium, has a ring zone (10) filled with hydraulic medium as a damper radially between the inner side of the cylinder and the outer side of the piston and axially between a ring (16) attached to the piston and a piston head (3). For movement damping at the end of the piston stroke, the ring zone is connected to the pressure zone through at least one throttle opening (18) formed by the attached ring. At least one valve opening in the connection is closed when the piston is advanced and open when the piston is retracted. The reverse movement of the piston is also damped at the end stage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004036424A DE102004036424A1 (en) | 2004-07-27 | 2004-07-27 | Hydraulic cylinder with end position damping |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE396342T1 true ATE396342T1 (en) | 2008-06-15 |
Family
ID=35057029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT05014290T ATE396342T1 (en) | 2004-07-27 | 2005-06-30 | HYDRAULIC CYLINDER WITH END POSITION DAMPING |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1621780B1 (en) |
AT (1) | ATE396342T1 (en) |
DE (2) | DE102004036424A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004039211A1 (en) * | 2004-08-12 | 2006-02-23 | Still Gmbh | Mast and hydraulic cylinder with a compensation device |
ATE438054T1 (en) | 2007-03-27 | 2009-08-15 | Freudenberg Carl Kg | SEALING ELEMENT AND SEALING ARRANGEMENT THEREFROM |
DE102011009365A1 (en) | 2011-01-25 | 2012-07-26 | Still Gmbh | Pressure cylinder for use as lifting cylinder of lifting mechanism for load bearing device of industrial truck, has piston ring comprising two semi-circular half-casings that are mounted into receiving groove, without using tools |
DE102011105363A1 (en) * | 2011-06-20 | 2012-12-20 | Carl Freudenberg Kg | Sealing ring for plunger cylinder, has pressure equalization openings which are evenly distributed along circumferential direction |
DE102012107197A1 (en) | 2012-08-06 | 2014-02-06 | Still Gmbh | Hydraulic cylinder with end position damping |
US9926178B2 (en) * | 2014-08-20 | 2018-03-27 | Crown Equipment Corporation | Actuator in a lift truck |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7900461A (en) * | 1978-01-20 | 1979-07-24 | Girling Ltd | GAS SPRING. |
GB2122305B (en) * | 1982-04-10 | 1987-02-18 | Tokico Ltd | Fluid spring or damper with slidable piston |
DE29707639U1 (en) * | 1997-04-28 | 1997-08-21 | Still GmbH, 22113 Hamburg | Hydraulic cylinder with shock protection |
US6557456B2 (en) * | 2001-05-24 | 2003-05-06 | The Raymond Corporation | Cushioned actuator |
-
2004
- 2004-07-27 DE DE102004036424A patent/DE102004036424A1/en not_active Withdrawn
-
2005
- 2005-06-30 AT AT05014290T patent/ATE396342T1/en not_active IP Right Cessation
- 2005-06-30 DE DE502005004170T patent/DE502005004170D1/en active Active
- 2005-06-30 EP EP05014290A patent/EP1621780B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP1621780B1 (en) | 2008-05-21 |
DE502005004170D1 (en) | 2008-07-03 |
DE102004036424A1 (en) | 2006-03-23 |
EP1621780A1 (en) | 2006-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |