EP2025951A3 - Piston/cylinder-unit - Google Patents

Piston/cylinder-unit Download PDF

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Publication number
EP2025951A3
EP2025951A3 EP08162038A EP08162038A EP2025951A3 EP 2025951 A3 EP2025951 A3 EP 2025951A3 EP 08162038 A EP08162038 A EP 08162038A EP 08162038 A EP08162038 A EP 08162038A EP 2025951 A3 EP2025951 A3 EP 2025951A3
Authority
EP
European Patent Office
Prior art keywords
piston
thread
piston rod
securing element
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.)
Withdrawn
Application number
EP08162038A
Other languages
German (de)
French (fr)
Other versions
EP2025951A2 (en
Inventor
Karl-Wilhelm Herwig
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.)
Pacoma GmbH
Original Assignee
Pacoma GmbH
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 Pacoma GmbH filed Critical Pacoma GmbH
Publication of EP2025951A2 publication Critical patent/EP2025951A2/en
Publication of EP2025951A3 publication Critical patent/EP2025951A3/en
Withdrawn legal-status Critical Current

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
    • F15B15/08—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
    • F15B15/1447—Pistons; Piston to piston rod assemblies

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)

Abstract

Eine Kolben/Zylinder-Einheit (1) weist ein Zylindergehäuse (2), einen eine Durchbrechung (13) aufweisenden Kolben (7) und eine eine Achse (9) aufweisende Kolbenstange (18) auf. Der Kolben (7) ist über ein in der Durchbrechung (13) angeordnetes Innengewinde (15) mit einem auf einem Fortsatz (21) der Kolbenstange (18) vorgesehenen Außengewinde (23) ohne erhöhtes Anziehdrehmoment verbunden. Ein axial wirkendes Sicherungselement (20), das sich im Wesentlichen in Richtung der Achse (9) erstreckt, verhindert das Losdrehen des Kolbens (7), wobei das Sicherungselement (20) ein Gewinde (24) aufweist und mit diesem mit einem zweiten Gewinde (27) der Kolbenstange (18) verbunden ist. Die Gewindepaarung (15/23) zwischen dem Kolben (7) und der Kolbenstange (18) und die Gewindepaarung (24/27) zwischen dem Sicherungselement (20) und der Kolbenstange (18) sind dafür gegenläufig ausgebildet.

Figure imgaf001
A piston / cylinder unit (1) has a cylinder housing (2), a piston (7) having an opening (13) and a piston rod (18) having an axis (9). The piston (7) is connected via a in the opening (13) arranged internal thread (15) with a on an extension (21) of the piston rod (18) provided external thread (23) without increased tightening torque. An axially acting securing element (20), which extends substantially in the direction of the axis (9), prevents loosening of the piston (7), wherein the securing element (20) has a thread (24) and with this with a second thread (20). 27) of the piston rod (18) is connected. The thread pairing (15/23) between the piston (7) and the piston rod (18) and the thread pairing (24/27) between the securing element (20) and the piston rod (18) are designed in opposite directions.
Figure imgaf001
EP08162038A 2007-08-10 2008-08-07 Piston/cylinder-unit Withdrawn EP2025951A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007037760.8A DE102007037760B4 (en) 2007-08-10 2007-08-10 Piston / cylinder unit with a cylinder housing, a piston and a piston rod

Publications (2)

Publication Number Publication Date
EP2025951A2 EP2025951A2 (en) 2009-02-18
EP2025951A3 true EP2025951A3 (en) 2011-06-01

Family

ID=39937558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08162038A Withdrawn EP2025951A3 (en) 2007-08-10 2008-08-07 Piston/cylinder-unit

Country Status (3)

Country Link
US (1) US8122812B2 (en)
EP (1) EP2025951A3 (en)
DE (1) DE102007037760B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635593A (en) * 2012-04-17 2012-08-15 常州轩达液压机电设备有限公司 Locking/pre-tightening device for oil cylinder lugs

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5091879B2 (en) * 2009-01-13 2012-12-05 カヤバ工業株式会社 Fluid pressure cylinder
KR101378045B1 (en) 2009-09-11 2014-03-27 에스엠시 가부시키가이샤 Air cylinder
ES2368406B1 (en) * 2011-02-22 2012-09-07 Ceimsa Electromedicina S.L. OXYGEN COMPRESSOR.
US9200708B2 (en) * 2012-02-29 2015-12-01 Caterpillar Inc. Piston retention apparatus and method
CN102536949B (en) * 2012-03-02 2016-01-06 常州海宏液压设备有限公司 Thrust cylinder for anti-impact heading machine
DE102012210367A1 (en) * 2012-06-20 2013-12-24 Zf Friedrichshafen Ag Anti-rotation device and method for securing a nut for a rotatable shaft against rotation
GB2520879B (en) * 2012-09-24 2019-01-30 Volvo Constr Equip Ab Caulking method for preventing piston of hydraulic/pneumatic cylinder from being loosened
DE102015217580B3 (en) * 2015-09-15 2017-01-19 Schaeffler Technologies AG & Co. KG Method for producing a release lock on the threaded ring of a Hydrostataktors, and Hydrostataktor
US10584699B2 (en) * 2018-02-06 2020-03-10 Federal Signal Corporation Piston head retaining system
CN108223491B (en) * 2018-03-19 2023-09-22 合肥工业大学 Differential locking hydraulic cylinder
DE102018121549A1 (en) 2018-09-04 2020-03-05 Liebherr-Components Kirchdorf GmbH Process for repairing a piston-cylinder unit within a work machine
DE102021114814B4 (en) 2021-06-09 2024-04-18 Hoerbiger Automotive Komfortsysteme Gmbh Linear actuator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013689A (en) * 1962-03-13 1965-12-15 Scovill Manufacturing Co Improvements in or relating to impact air cylinders
US3293993A (en) * 1964-11-05 1966-12-27 Parker Hannifin Corp Joint between a piston head and a piston rod of a fluid motor
GB1134300A (en) * 1966-05-03 1968-11-20 Tubmetal La Cellofibre Jack
FR2232234A5 (en) * 1973-05-29 1974-12-27 France Etat Composite cylinder for hydraulic jack - made from drawn steel tube with glass fibre reinforced plastic liner
DE2448019A1 (en) * 1973-10-23 1975-04-24 Caterpillar Tractor Co PISTON ARRANGEMENT FOR FLUID ENGINES
DE10156504C1 (en) * 2001-11-16 2003-04-10 Hyco Pacoma Gmbh Piston-cylinder assembly has housing with axially movable piston mounted on threaded piston rod

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362435A (en) * 1919-05-29 1920-12-14 Neraas Antone Piston
DE821444C (en) * 1949-07-24 1951-11-19 Max Schadewald Screw locking
FR2718504B1 (en) * 1994-04-12 1996-05-03 Hydromo Method for mounting a piston on the rod of a jack.
US6126355A (en) * 1998-08-31 2000-10-03 Otto Bock, U.S., Inc. Fastener for adjustable support device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013689A (en) * 1962-03-13 1965-12-15 Scovill Manufacturing Co Improvements in or relating to impact air cylinders
US3293993A (en) * 1964-11-05 1966-12-27 Parker Hannifin Corp Joint between a piston head and a piston rod of a fluid motor
GB1134300A (en) * 1966-05-03 1968-11-20 Tubmetal La Cellofibre Jack
FR2232234A5 (en) * 1973-05-29 1974-12-27 France Etat Composite cylinder for hydraulic jack - made from drawn steel tube with glass fibre reinforced plastic liner
DE2448019A1 (en) * 1973-10-23 1975-04-24 Caterpillar Tractor Co PISTON ARRANGEMENT FOR FLUID ENGINES
DE10156504C1 (en) * 2001-11-16 2003-04-10 Hyco Pacoma Gmbh Piston-cylinder assembly has housing with axially movable piston mounted on threaded piston rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635593A (en) * 2012-04-17 2012-08-15 常州轩达液压机电设备有限公司 Locking/pre-tightening device for oil cylinder lugs

Also Published As

Publication number Publication date
US20090038472A1 (en) 2009-02-12
US8122812B2 (en) 2012-02-28
DE102007037760B4 (en) 2016-03-24
EP2025951A2 (en) 2009-02-18
DE102007037760A1 (en) 2009-02-12

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