EP1061268A2 - 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
EP1061268A2
EP1061268A2 EP00109759A EP00109759A EP1061268A2 EP 1061268 A2 EP1061268 A2 EP 1061268A2 EP 00109759 A EP00109759 A EP 00109759A EP 00109759 A EP00109759 A EP 00109759A EP 1061268 A2 EP1061268 A2 EP 1061268A2
Authority
EP
European Patent Office
Prior art keywords
damping
cylinder
tube
piston
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.)
Granted
Application number
EP00109759A
Other languages
German (de)
English (en)
Other versions
EP1061268B1 (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 designates a fluid powered, preferably single-acting cylinder on the guide side is steamed.
  • a hydraulic cylinder with end position damping in which the damping when the end position is approached by the pressure medium outflow through an annular gap between the end of the piston ring channel and the cylinder wall in connection with the free cross-section of the bore in the connecting piece in the cylinder wall, is known from the publication DE 6943765.
  • Check valves are also arranged in the piston to enable movement in the opposite direction.
  • the damping characteristic is constant and cannot be changed or adjusted with simple means.
  • the manufacturing effort for this cylinder is complex due to the necessary check valves.
  • US 4425836 discloses a further possibility for damping a fluid-powered working cylinder.
  • a helical recess is made in the lateral surface of the piston for throttled outflow of the fluid, the piston position in the damping chamber resulting in an effective linear increase in the throttle characteristic.
  • a disadvantage is the compulsory linear increase in the throttle characteristic, the change of which would only be possible through complex helix structures with a variable gradient value and / or cross section.
  • the object of the invention is a guide-side Damping, preferably a single-acting cylinder to develop with a low damping volume, the damping distance and damping characteristics of each Field of application is easily adaptable, no mechanical acting components, no additional external or internal connections with high manufacturing costs or large radial expansion required and by a in particular progressive damping characteristics the gentle Movement of masses or forces in gear technology Systems with improved overall efficiency within the lifting movement enables and inexpensive to manufacture is, with improved overall efficiency within the lifting movement.
  • the length of the damping section, the inclination and the cross-section of the outflow notch determine the damping characteristics.
  • the inside diameter of the cylinder tube has an oversize in the usual order of magnitude compared to the piston diameter, whereas the damping tube is precisely matched to the piston diameter.
  • the damping tube is advantageous for coupling to the end provided with a transition cone provided a continuous, low-resistance Transition of the piston from the cylinder tube into the damping tube enables.
  • the size of the cone angle determines the Damping intensity.
  • the advantages of the invention are in particular simple adjustment of the damping characteristics of a simple working cylinder with low damping volume by combining one to the respective purpose adapted damping tube with a cylinder.
  • a modular system for such cylinders be built that different with the same cylinders Have damping characteristics.
  • one necessary necessary resulting from changing operating parameters Changing the damping characteristics is easy realizable. Individual adjustments to the damping distance by the length of the damping tube and the damping parameters due to the cross-section and the inclination of the damping notch are cheap to implement.
  • the flow-related losses and the efficiency of the working cylinder derived therefrom are adapted to the desired damping intensity, but, compared to the known damping systems, have more favorable values.
  • the particularly progressive damping characteristics ensure the gentle movement of masses and forces in transmission systems.
  • the radial dimensions are not larger than that of the locking parts of the working cylinder.
  • the production is inexpensive because no additional external or internal connections for the realization of a damping have to be made or installed. Compared to other damped working cylinders, the user has lower maintenance costs because there are no additional components that are prone to failure or wear, such as piston rings or valves.
  • a single-acting working cylinder 1 with a central axis 2 consists of a cylinder tube 3 and a damping tube 4 with a transition cone 5, which are connected to one another in the area of their joint 6 by a sleeve 7 with sleeve seals 8 in a non-positive and positive manner.
  • a bottom closure part 9 is detachably connected to the cylinder tube 3 by means of a lower thread pair 10, the pressure medium connection being made via the bottom closure part 9.
  • the damping tube 4 is detachably connected to a guide closure part 12 by means of an upper thread pair 11.
  • a piston rod 13 with a piston 14 located thereon, which is guided and sealed in a known manner in the guide closure part 12 by a wiper 15, a piston seal 16 and a guide 17.
  • An upper pressure medium chamber 18 and a lower pressure medium chamber 19 are formed between the piston 14 and the guide closure part 12 and between the piston 14 and the bottom closure part 9.
  • the damping tube 4 in the guide closure part 12 and the cylinder tube 3 in the base closure part 9 are sealed by means of seals 20.
  • a bore 21 with a screw plug 22 is arranged in the guide closure part 12 to vent the working cylinder 1. According to FIGS.
  • the piston 14 arranged on the piston rod 13 according to FIG. 1 has an undersize compared to the inner diameter of the cylinder tube 3, which corresponds to an area coefficient of 0.966, as a result of which an annular channel 27 with an outflow ring surface 28 is formed.

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)
  • Valve Device For Special Equipments (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
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 1999-06-17
DE29910610U DE29910610U1 (de) 1999-06-17 1999-06-17 Führungsseitige Dämpfung in einfach wirkenden Arbeitszylindern

Publications (3)

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6943765U (de) 1969-11-07 1970-03-26 Montan Hydraulik Gmbh & Co Kg Hydraulikzylinder mit endlagendaempfung
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

Family Cites Families (2)

* 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
DE2830416A1 (de) * 1978-07-08 1980-01-17 Bell Ag Maschf Arbeitszylinder mit bremsfunktion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6943765U (de) 1969-11-07 1970-03-26 Montan Hydraulik Gmbh & Co Kg Hydraulikzylinder mit endlagendaempfung
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

Also Published As

Publication number Publication date
EP1061268B1 (fr) 2005-06-15
DE29910610U1 (de) 1999-09-16
ATE298044T1 (de) 2005-07-15
DE50010547D1 (de) 2005-07-21
EP1061268A3 (fr) 2003-10-29

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