EP0786599A2 - Système de commande actionné par un fluide sous pression avec un cylindre et un piston plungeur - Google Patents

Système de commande actionné par un fluide sous pression avec un cylindre et un piston plungeur Download PDF

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Publication number
EP0786599A2
EP0786599A2 EP97100230A EP97100230A EP0786599A2 EP 0786599 A2 EP0786599 A2 EP 0786599A2 EP 97100230 A EP97100230 A EP 97100230A EP 97100230 A EP97100230 A EP 97100230A EP 0786599 A2 EP0786599 A2 EP 0786599A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
abutment
pressure medium
sliding body
piston
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
EP97100230A
Other languages
German (de)
English (en)
Other versions
EP0786599A3 (fr
EP0786599B1 (fr
Inventor
Otmar Kaup
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.)
Kaup & Co KG Gesellschaft fur Maschinenbau GmbH
Kaup GmbH and Co KG
Original Assignee
Kaup & Co KG Gesellschaft fur Maschinenbau GmbH
Kaup GmbH and Co KG
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 Kaup & Co KG Gesellschaft fur Maschinenbau GmbH, Kaup GmbH and Co KG filed Critical Kaup & Co KG Gesellschaft fur Maschinenbau GmbH
Publication of EP0786599A2 publication Critical patent/EP0786599A2/fr
Publication of EP0786599A3 publication Critical patent/EP0786599A3/fr
Application granted granted Critical
Publication of EP0786599B1 publication Critical patent/EP0786599B1/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
    • F15B15/08—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
    • F15B15/1438—Cylinder to end cap assemblies
    • 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
    • F15B15/1433—End caps
    • 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
    • F15B15/1457—Piston rods
    • F15B15/1461—Piston rod sealings

Definitions

  • the invention relates to a pressure medium drive with a cylinder with a cylinder chamber, a radially guided piston, a sealing ring and an exchangeable abutment with a through hole for the piston and with a contact surface for the sealing ring.
  • Such pressure medium drives which are generally designed as hydraulic drives, are required in large numbers, for example for industrial trucks such as forklifts, etc.
  • the invention is therefore based on the object of specifying a pressure medium drive which can be produced simply and using fewer parts is, in which the abutment has a precise fit and the sealing ring is easily replaceable.
  • the dovetail connection has two diametrically opposed sliding strips which are inserted into complementary transverse grooves in the cylinder.
  • the piston is guided in a guide ring inserted into the cylinder chamber and if the sealing ring is arranged between the guide ring and the sliding body, in particular if the guide ring consists of a lubricious plastic and is arranged in a stepped bore in the cylinder chamber.
  • the plunger itself serves in a surprisingly simple way as a locking device for the sliding body; no further fasteners are required. As long as the plunger is pushed into the cylinder piston, the sliding body cannot be pushed out of the transverse grooves in the cylinder. If the plunger is pulled out of the cylinder, the sliding body can be pushed out of the transverse grooves perpendicular to the longitudinal axis of the cylinder, so that the sealing ring can then be pulled out of its stepped bore without special tools and replaced with a new sealing ring. The sliding body can also be reused as often as required.
  • the sliding body has a rectangular outline in the axial direction of view (which is also to be understood as a square outline) and if the sliding strips are arranged on two opposite sides of the rectangle.
  • the sliding body is provided with an annular groove within the through bore for the plunger, into which a scraper ring is inserted.
  • This scraper ring can also be easily levered out of the ring groove and replaced with a new one. As long as the wiper ring is reusable, it remains in the sliding body and can be inserted into the transverse grooves again after the sealing ring has been replaced, whereupon it is locked again by the plunger.
  • a cylinder 1 shows a cylinder 1 with a cylinder chamber 2, in which a plunger 3 is arranged, which is also referred to as a plunger. Due to a difference in diameter between the cylinder chamber 2 and the plunger 3, an annular gap 4 is formed, into which a connection bore 5 opens for a hydraulic line, not shown.
  • the end of the cylinder chamber 2 is slightly enlarged in diameter, and a guide ring 6 is used in this extension, which is made of a good sliding plastic, such as polyamide.
  • This extension is followed by a stepped bore 7 into which a sealing ring 8 is inserted, which is designed in the manner shown as a groove or lip ring.
  • This stepped bore 7 is in turn connected to two mutually parallel transverse grooves 9 and 10, which have a prismatic cross section and run across the entire cylinder 1, i.e. are open at both ends. In the direction of the end of the cylinder 1, these transverse grooves 9 and 10 are each delimited by a claw 11 which runs parallel to the respective transverse groove 9 and 10 and forms a sliding fit with each.
  • a sliding body 12 is inserted in the diametrical direction, which has a through bore 13 for the plunger 3.
  • the sliding body 12 forms an abutment for the sealing ring 8, which is in the direction of the cylinder opening under the pressure of the hydraulic fluid, which is up to 300 bar, but this value does not represent a critical upper limit.
  • the sliding body 12 can be pushed out in both directions according to the double arrow 14 perpendicular to the axis A. In the axial direction, however, the sliding body 12 is reliably held by the transverse grooves 9 and 10 or by the claws 11.
  • the sliding body 12 has a contact surface 15 for the sealing ring 8 and, on the opposite side within the through bore 13, an annular groove 16 (FIG. 4) for receiving a wiper ring 17.
  • This wiper ring can be reused depending on the findings; it does not require a metal frame, since the sliding body 12 also takes on this function.
  • the scraper ring 17 is held in all directions by the walls of the annular groove 16 and by the plunger 3; However, after pulling out the plunger 3, it can easily be levered out or rolled out.
  • the sliding body 12 has a rectangular outline in the axial viewing direction according to the arrow V, two mutually parallel sliding strips 18 and 19 being arranged on two opposite sides of the rectangle R, which likewise have a prismatic cross section and are arranged and formed complementary to the transverse grooves 8 and 9. This results in a type of dovetail connection between the sliding body 12 and the cylinder 1, which ensures an extremely exact fit of the sliding body 12.
  • FIG. 7 the idea of the invention can be used both in cylinders with a rectangular or square outer contour (FIG. 7) and in cylinders which have, for example, an outer cylinder surface (FIG. 8).
  • FIGS. 7 and 8 identical parts are provided with the same reference symbols.
  • the cylinder 1 according to FIG. 1 is replaced by a cylinder 23 with a cylindrical outer surface which has a corresponding wall thickness in order to enable the transverse grooves 9 and 10 and the sliding strips 18 and 19 to have a sufficient length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Pens And Brushes (AREA)
  • Power Steering Mechanism (AREA)
  • Sealing Devices (AREA)
EP97100230A 1996-01-25 1997-01-09 Système de commande actionné par un fluide sous pression avec un cylindre et un piston plungeur Expired - Lifetime EP0786599B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602553A DE19602553C2 (de) 1996-01-25 1996-01-25 Druckmittelantrieb mit einem Zylinder und einem Tauchkolben
DE19602553 1996-01-25

Publications (3)

Publication Number Publication Date
EP0786599A2 true EP0786599A2 (fr) 1997-07-30
EP0786599A3 EP0786599A3 (fr) 1998-07-08
EP0786599B1 EP0786599B1 (fr) 2001-11-28

Family

ID=7783601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100230A Expired - Lifetime EP0786599B1 (fr) 1996-01-25 1997-01-09 Système de commande actionné par un fluide sous pression avec un cylindre et un piston plungeur

Country Status (6)

Country Link
US (1) US5701800A (fr)
EP (1) EP0786599B1 (fr)
JP (1) JP3871757B2 (fr)
AT (1) ATE209756T1 (fr)
DE (2) DE19602553C2 (fr)
ES (1) ES2168527T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813735A1 (fr) * 2013-06-12 2014-12-17 Koganei Corporation Cylindre de pression de fluide
WO2022229387A1 (fr) * 2021-04-29 2022-11-03 Ferrobotics Compliant Robot Technology Gmbh Actionneur linéaire pneumatique

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632606A (en) * 1993-11-23 1997-05-27 Sarcos Group Volumetric pump/valve
DE19834149C2 (de) * 1998-07-29 2003-12-11 Kaup Gmbh & Co Kg Verfahren zum Steuern eines hydraulischen Seitenschieberantriebs und Hydraulikantrieb hierfür
DE19903174C2 (de) * 1999-01-27 2001-05-31 Kaup Gmbh & Co Kg Anbaugerät für Flurförderzeuge, mit einem Hubmast, insbesondere für Gabelstapler
DE19903160C2 (de) * 1999-01-27 2003-06-18 Kaup Gmbh & Co Kg Flurförderzeug mit einem Hubmast, insbesondere für Gabelstapler
DE19903157C2 (de) * 1999-01-27 2002-11-21 Kaup Gmbh & Co Kg Anbaugerät für Flurförderzeuge mit einem Hubmast, insbesondere für Gabelstapler
US6394462B1 (en) * 2000-01-26 2002-05-28 Tse Brakes, Inc. Push rod seal for disc brake actuator
US20030156935A1 (en) * 2002-02-21 2003-08-21 Luciano Mondani Fork movement assembly for lift trucks
JP4929495B2 (ja) * 2006-12-06 2012-05-09 Ｓｍｃ株式会社 ダンパ固定構造
JP4737453B2 (ja) 2006-12-06 2011-08-03 Ｓｍｃ株式会社 流体圧シリンダ
JP4737454B2 (ja) 2006-12-06 2011-08-03 Ｓｍｃ株式会社 流体圧シリンダに用いられる止め輪
RU2594098C1 (ru) * 2015-05-28 2016-08-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Плунжерный гидроцилиндр
CA3007257A1 (fr) 2017-06-08 2018-12-08 Jody Addicott Appareil de transport a fourches destine a un chariot elevateur a fourches et mecanisme de vanne associe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391612A (en) 1965-06-05 1968-07-09 Sneen Franz Piston sealing elements in hydraulic motors
DE3635010A1 (de) 1986-10-10 1988-04-14 Gock Eberhard Priv Doz Prof Dr Erzeugung von synthetischem anatas aus ilmeniten mit duennsaeure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1340064A (en) * 1970-07-03 1973-12-05 Girling Ltd Brake actuators
US4085661A (en) * 1976-07-16 1978-04-25 Edward D. Meyer Double wedge-lock cylinder head
AT363746B (de) * 1976-12-30 1981-08-25 Vmw Ranshofen Berndorf Ag Druckluft- und/oder hydraulikzylinder
DE3635020C2 (de) * 1985-10-26 1994-08-04 Volkswagen Ag Formschlüssige Befestigung einer axialkraftbeaufschlagten kreiszylindrischen Anschlagscheibe in einem Zylinder
FR2615914A1 (fr) * 1987-06-01 1988-12-02 Moselle Ateliers Chantiers Verin hydraulique ou pneumatique equipe d'un coussinet d'etancheite a demontage rapide
US5245911A (en) * 1992-09-22 1993-09-21 Yuda Lawrence F Cylinder assembly and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391612A (en) 1965-06-05 1968-07-09 Sneen Franz Piston sealing elements in hydraulic motors
DE3635010A1 (de) 1986-10-10 1988-04-14 Gock Eberhard Priv Doz Prof Dr Erzeugung von synthetischem anatas aus ilmeniten mit duennsaeure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813735A1 (fr) * 2013-06-12 2014-12-17 Koganei Corporation Cylindre de pression de fluide
US9512860B2 (en) 2013-06-12 2016-12-06 Koganei Corporation Fluid pressure cylinder
WO2022229387A1 (fr) * 2021-04-29 2022-11-03 Ferrobotics Compliant Robot Technology Gmbh Actionneur linéaire pneumatique

Also Published As

Publication number Publication date
JPH09296806A (ja) 1997-11-18
DE59705481D1 (de) 2002-01-10
JP3871757B2 (ja) 2007-01-24
EP0786599A3 (fr) 1998-07-08
DE19602553C2 (de) 1999-10-14
ES2168527T3 (es) 2002-06-16
ATE209756T1 (de) 2001-12-15
DE19602553A1 (de) 1997-07-31
US5701800A (en) 1997-12-30
EP0786599B1 (fr) 2001-11-28

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