EP1061268B1 - Amortissement dans le côté de guidage des vérins - Google Patents

Amortissement dans le côté de guidage des vérins Download PDF

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Publication number
EP1061268B1
EP1061268B1 EP00109759A EP00109759A EP1061268B1 EP 1061268 B1 EP1061268 B1 EP 1061268B1 EP 00109759 A EP00109759 A EP 00109759A EP 00109759 A EP00109759 A EP 00109759A EP 1061268 B1 EP1061268 B1 EP 1061268B1
Authority
EP
European Patent Office
Prior art keywords
damping
cylinder
piston
tube
working cylinder
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
EP00109759A
Other languages
German (de)
English (en)
Other versions
EP1061268A2 (fr
EP1061268A3 (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.)
Buemach Engineering International BV
Original Assignee
Buemach 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.)
Filing date
Publication date
Application filed by Buemach Engineering International BV filed Critical Buemach Engineering International BV
Publication of EP1061268A2 publication Critical patent/EP1061268A2/fr
Publication of EP1061268A3 publication Critical patent/EP1061268A3/fr
Application granted granted Critical
Publication of EP1061268B1 publication Critical patent/EP1061268B1/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
    • 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
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders

Definitions

  • the invention refers to a fluid-operated, preferably single acting cylinder, on the guide side is dampened.
  • a helical depression introduced in the lateral surface of the piston is used for the throttled outflow of the fluid, whereby an effective linear increase of the throttle characteristic value results through the piston position in the damping chamber.
  • a disadvantage is the absolutely linear increase in the throttle characteristic value, the change of which would only be possible by complex helical structures with variable gradient value and / or cross section.
  • the object of the invention is an executive side Damping, preferably a single-acting working cylinder to develop with low attenuation volume its attenuation distance and damping characteristic of the respective Field of application is easily adaptable, no mechanical having acting components, no additional external or internal connections with high production costs or large radial expansion needed and by a especially progressive damping characteristics the gentle Movement of masses or forces in transmission technology Systems with improved overall efficiency within allows the lifting movement and inexpensive to produce is, with improved overall efficiency within the lifting movement.
  • the length of the damping section, the inclination and the cross section of the Abströmkerbe determine the damping characteristic.
  • the inner diameter of the cylinder tube has a lying in the usual order of magnitude over the piston diameter, whereas the damping tube is matched in register to the piston diameter.
  • the inner diameter difference of the damping tube to the cylinder tube is dependent on the application of the working cylinder and should in particular have a surface coefficient, which is within the limits of:
  • the damping tube is at the for coupling with the cylinder tube end provided with a transition cone provided that a continuous, low-resistance Transition of the piston from the cylinder tube in the damping tube allows.
  • the size of the cone angle determines the Damping intensity.
  • area coefficient is the overcurrent function of the fluid inside the cylinder tube as well as in the transition area to the damping tube established. At high extension speeds of the piston rod should be the value of the area coefficient in the bottom Border area are kept.
  • the advantages of the invention are in particular in the easy adjustment of the damping characteristics of a simple acting working cylinder with low damping volume by the combination of one to the respective application adapted damping tube with a cylinder.
  • a modular system for such working cylinder be built, the same cylinders with different Have damping characteristics.
  • Change of the damping characteristic is problem-free realizable.
  • Individual adjustments of the damping distance by the length of the damping tube and the damping parameters by the cross section and the inclination of the damping notch are cheap to realize.
  • the flow-related losses and the efficiency of the working cylinder derived therefrom are adapted to the desired damping intensity, but have more favorable values than the known damping systems. Due to the particular progressive damping characteristic, the gentle movement of masses or forces in transmission systems is ensured. The radial dimensions are not greater than those of the closure parts of the working cylinder.
  • the production is cost-effective, since no additional external or internal connections for the realization of a damping to produce or assemble. It results in lower maintenance costs for the user in relation to other damped working cylinders, since there are no fault-prone or wearing additional components such as piston rings or valves.
  • Fig.1 there is a single-acting cylinder 1 with a central axis 2 of a cylinder tube 3 and a damping tube 4 with a transition cone 5, which are connected in the region of their joint 6 by a sleeve 7 with sleeve seals 8 non-positively and positively.
  • a bottom closure part 9 is detachably connected by means of a lower thread pairing 10, wherein the pressure medium connection takes place via the bottom closure part 9.
  • the damping tube 4 is detachably connected by means of an upper thread pairing 11 with a guide closure part 12.
  • a piston rod 13 is arranged with befindlichem piston 14 which is guided and sealed in a known manner in the guide closure member 12 by a scraper 15, a piston seal 16 and a guide 17.
  • a scraper 15 Between the piston 14 and the Fmmurigsverschlußteil 12, an upper pressure medium chamber 18 and between the piston 14 and the bottom closure part 9, a lower pressure medium space 19 are formed.
  • a bore 21 is arranged with a screw plug 22 in the guide closure part 12. According to Fig. 2 and Fig.
  • the arranged on the piston rod 13 as shown in FIG. 1 piston 14, has, compared to the inner diameter of the cylinder tube 3, an undersize, which corresponds to an area coefficient of 0.966, whereby an annular channel 27 is formed with a Abströmring constitutional 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (3)

  1. Vérin (1) entraíné par un fluide, de préférence vérin à simple effet avec amortissement le long du guidage,
    caractérisé en ce que
    le vérin (1) est composé d'un tube de cylindre (3) et d'un tube d'amortissement (4) relié à celui-ci, et la surface enveloppe interne (25) du tube d'amortissement (4) comporte sur toute la longueur, une entaille d'écoulement (23), dont l'axe médian (24) fait avec l'axe central (2) du vérin (1), un angle dont la tangente a une valeur de 0,02 à 0,3.
  2. Vérin (1) selon la revendication 1,
    caractérisé en ce que
    le tube d'amortissement (4) présente, à son extrémité de raccordement au tube de cylindre (3), un cône de transition (5).
  3. Vérin (1) selon la revendication 1 ou 2,
    caractérisé en ce qu'
    un tube de cylindre (3) et un tube d'amortissement (4) présentant les caractéristiques les plus diverses, peuvent être combinés entre eux dans un système de construction modulaire.
EP00109759A 1999-06-17 2000-05-09 Amortissement dans le côté de guidage des vérins Expired - Lifetime EP1061268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29910610U DE29910610U1 (de) 1999-06-17 1999-06-17 Führungsseitige Dämpfung in einfach wirkenden Arbeitszylindern
DE29910610U 1999-06-17

Publications (3)

Publication Number Publication Date
EP1061268A2 EP1061268A2 (fr) 2000-12-20
EP1061268A3 EP1061268A3 (fr) 2003-10-29
EP1061268B1 true EP1061268B1 (fr) 2005-06-15

Family

ID=8074941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109759A Expired - Lifetime EP1061268B1 (fr) 1999-06-17 2000-05-09 Amortissement dans le côté de guidage des vérins

Country Status (3)

Country Link
EP (1) EP1061268B1 (fr)
AT (1) ATE298044T1 (fr)
DE (2) DE29910610U1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005030403B4 (de) * 2005-06-27 2011-05-19 Stabilus Gmbh Verstellelement
DE102006002309B4 (de) * 2006-01-18 2012-05-16 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kolben-Zylinder-Anordnung
DE102010036036B4 (de) * 2010-08-31 2015-09-10 Stabilus Gmbh Verstellantrieb
DE102016203821A1 (de) * 2016-03-09 2017-09-14 Robert Bosch Gmbh Flüssigkeitsschalldämpfer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882869A (en) * 1955-12-12 1959-04-21 Krapf John Albert Piston cushioned fluid pressure actuator
DE6943765U (de) 1969-11-07 1970-03-26 Montan Hydraulik Gmbh & Co Kg Hydraulikzylinder mit endlagendaempfung
DE2830416A1 (de) * 1978-07-08 1980-01-17 Bell Ag Maschf Arbeitszylinder mit bremsfunktion
DE2920369A1 (de) 1979-05-19 1980-12-04 Mecman Ab Vorrichtung zur daempfung eines kolbens bei erreichen einer endstellung
US4296675A (en) 1979-07-16 1981-10-27 Aeroquip Corporation Cylinder cushion with contractable ring
US4424737A (en) 1980-03-26 1984-01-10 Kabushiki Kaisha Komatsu Seisakusho Stroke cushioning apparatus for hydraulic cylinders
US4425836A (en) 1981-02-20 1984-01-17 Government Innovators, Inc. Fluid pressure motor
DE3513369A1 (de) 1985-04-15 1986-10-16 Alten, Kurt, 3015 Wennigsen Hydraulischer arbeitszylinder
DE29618186U1 (de) 1996-10-21 1998-02-19 Robert Bosch Gmbh, 70469 Stuttgart Druckmittelbetätigbarer Arbeitszylinder

Also Published As

Publication number Publication date
EP1061268A2 (fr) 2000-12-20
EP1061268A3 (fr) 2003-10-29
DE50010547D1 (de) 2005-07-21
DE29910610U1 (de) 1999-09-16
ATE298044T1 (de) 2005-07-15

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