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DE3718308A1 - Fluid working cylinder - Google Patents

Fluid working cylinder

Info

Publication number
DE3718308A1
DE3718308A1 DE19873718308 DE3718308A DE3718308A1 DE 3718308 A1 DE3718308 A1 DE 3718308A1 DE 19873718308 DE19873718308 DE 19873718308 DE 3718308 A DE3718308 A DE 3718308A DE 3718308 A1 DE3718308 A1 DE 3718308A1
Authority
DE
Germany
Prior art keywords
working cylinder
fluid working
profile
rod
guide
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Withdrawn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
DE19873718308
Other languages
German (de)
Inventor
Gerhard Hanik
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.)
GERHARD HANIK MASCHINENBAU ING
Original Assignee
GERHARD HANIK MASCHINENBAU ING
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 GERHARD HANIK MASCHINENBAU ING filed Critical GERHARD HANIK MASCHINENBAU ING
Priority to DE19873718308 priority Critical patent/DE3718308A1/en
Publication of DE3718308A1 publication Critical patent/DE3718308A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1414Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
    • F15B15/1419Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston of non-circular cross-section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1414Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

A fluid working cylinder which has a stroke part secured against rotation and is mainly used in manipulating appliances and special-purpose machines. The anti-rotation locking is achieved owing to the fact that a rigid profiled guide bar engages in a profile bush located in the piston or piston rod and thus prevents the stroke part from rotating. In order to achieve a long service life of the profiled guide, multi-layered guide components or ball-circulating bushes are used.

Description

Die Erfindung betrifft hydraulische und pneumatische Arbeits­ zylinder, deren Kolbenstange verdrehfest gegenüber dem Zylin­ dergehäuse gestaltet ist.The invention relates to hydraulic and pneumatic work cylinder, the piston rod of which is non-rotatable with respect to the cylinder the housing is designed.

Derartige verdrehsichere Fluid-Arbeitszylinder haben technisch die besondere Bedeutung, daß die Vorrichtungen, in die diese eingesetzt werden, wesentlich vereinfacht ausgeführt werden können, weil damit aufwendige Parallelführungsanordnungen entfallen.Such rotation-proof fluid working cylinders have technical the special meaning that the devices in which this are used, are carried out significantly simplified can because so complex parallel guide arrangements omitted.

Verdrehsichere Arbeitszylinder sind an sich in verschiedenen Formen bekannt, so im DP 24 48 028 in dem Zylinder wie Kolben als Mehrkantprofil gestaltet sind. Eine andere Anordnung der Verdrehsicherung ist die Kolbenstange im Zylinderkopf exzen­ trisch zu führen, bei einer entsprechenden exzentrischen Be­ festigung im Kolbenboden. In der Praxis ist die Verdrehsi­ cherung mit doppelter Kolbenstange die am häufigsten ausge­ führte Form.Rotation-proof working cylinders are in themselves in different Forms known, so in DP 24 48 028 in the cylinder like pistons are designed as a polygonal profile. Another arrangement of the The piston rod in the cylinder head is secured against rotation to lead trically, with a corresponding eccentric loading fixation in the piston crown. In practice, the twist is double piston rod the most commonly used led form.

Allen diesen bekannten Anordnungen ist gemeinsamt, daß das ein­ fache, relativ leicht zu dichtende Prinzip von runden Zylindern mit zentrischer Kolbenstange verlassen wurde und somit die Dichthalteproblematik besonders bei höheren Drücken kritisch wird.All these known arrangements have in common that the one simple, relatively easy to seal principle of round cylinders was left with a central piston rod and thus the Sealing problem, especially critical at higher pressures becomes.

Der Erfindung liegt die Aufgabe zugrunde, langlebige, reibungs­ arme und trotzdem spielfrei auch bei höheren Arbeitsdrücken sicher zu dichtende, verdrehsichere Arbeitszylinder zu schaffen.The invention is based, long-lasting, friction poor and yet free of play even at higher working pressures to create securely sealed, non-rotating working cylinders.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei Bei­ behaltung des bewährten runden und zentrischen Abdichtungsprin­ zips am Zylinderboden ein profilierter Führungsstab fest ange­ bracht ist, der in eine entsprechend profilierte Höhlung durch den Kolbenboden in die hohle Kolbenstange reicht. Eine weitere Ausgestaltung wäre eine Längskugelführung oder Mehrkantprofil ohne Kugelführung. This object is achieved in that at retention of the proven round and centric sealing print a profiled guide rod is firmly attached to the cylinder base is brought into a correspondingly profiled cavity the piston crown extends into the hollow piston rod. Another Design would be a longitudinal ball guide or polygonal profile without ball guide.  

Die Erfindung sei an folgendem Beispiel erläutert:The invention is illustrated by the following example:

In Fig. 1 ist das Grundprinzip schematisch dargestellt, nach dem am Zylinderboden (1) ein Führungsstab (2) starr und ver­ drehsicher eingesetzt ist.In Fig. 1, the basic principle is shown schematically, according to which on the cylinder base ( 1 ) a guide rod ( 2 ) is used rigidly and ver non-rotatably.

In den Fig. 2 und 3 sind, als Bei­ spiele von vielen, zwei Profilformen dargestellt. Ein solcher profilierter Führungsstab (2) läuft durch ein mit entsprechen­ dem Innenprofil versehenen Führungsstück (3), das im Kolben oder in der Kolbenstange befestigt ist. Die Kolbenstange (5) ist für den Führungsstab freigebohrt., Are as shown at games of many, two profile shapes in FIGS. 2 and 3. Such a profiled guide rod ( 2 ) runs through a guide piece ( 3 ) which has an internal profile and is fastened in the piston or in the piston rod. The piston rod ( 5 ) is drilled free for the guide rod.

In der weiteren Ausbildung der Erfindung sind, um die bei einer solchen Anordnung geforderten höheren Torsionskräfte abzufangen, reibungsarme Materialpaarungen bzw. Mittel vor­ gesehen, so z. B. Mehrschichtgleitlager, bzw. für höhere Bean­ spruchungen Längswälzlager (6).In the further embodiment of the invention, in order to intercept the higher torsional forces required in such an arrangement, low-friction material pairings or means are seen before, for. B. multilayer plain bearings, or for higher bean stresses longitudinal roller bearings ( 6 ).

Das Führungssystem ist innen geflutet, wobei Fließkanäle (7) in der Profilführung (3) des Kolbenbodens (4) bzw. der Kol­ benstange (5) einen wenig gehinderten Lauf des Kolbens (4) ermöglichen.The guide system is flooded on the inside, with flow channels ( 7 ) in the profile guide ( 3 ) of the piston crown ( 4 ) or the piston rod ( 5 ) allowing the piston ( 4 ) to run a little more easily.

Das beanspruchte Prinzip ist nicht nur auf verdrehsichere Geradschubstangenantriebe begrenzt, denn durch eine steil­ gewindeartige bzw. kurvenförmige Ausbildung des Führungs­ stabprofils lassen sich fest vorgegebene Schub-Dreh-Programme realisieren.The claimed principle is not only based on non-rotating Straight push rod drives limited because of a steep thread-like or curved design of the guide rod profiles can be preset push-turn programs realize.

Erzielbare Vorteile:Achievable advantages:

Hohe Genauigkeit und lange Lebensdauer. Höhere Festigkeit, als die am Markt befindlichen Ausführungen mit 2 Kolben­ stangen.High accuracy and long life. Higher strength, than the versions with 2 pistons on the market rods.

Claims (7)

1. Verdrehsicherer Fluid-Arbeitszylinder, dadurch gekennzeich­ net, daß am Zylinderboden ein profilierter Führungsstab fest angebracht ist, der in eine entsprechend profilierte Höhlung durch den Kolbenboden in eine hohle Kolbenstange reicht.1. Anti-rotation fluid working cylinder, characterized in that a profiled guide rod is fixedly attached to the cylinder bottom, which extends into a correspondingly profiled cavity through the piston head in a hollow piston rod. 2. Profilierte Führungsstange nach Anspruch 1, dadurch gekenn­ zeichnet, daß das gradlinige Grundprofil drei- oder mehrkantig ist.2. Profiled guide rod according to claim 1, characterized records that the straight basic profile triangular or polygonal is. 3. Verdrehsicherer Fluid-Arbeitszylinder nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die stabförmige Profilfüh­ rung und die entsprechende Profilführung in der hohlen Kolben­ stange aus einer reibungsarmen Materialpaarung besteht.3. Non-rotating fluid working cylinder according to claims 1 and 2, characterized in that the rod-shaped profile guide tion and the corresponding profile guide in the hollow piston rod consists of a low-friction material pairing. 4. Verdrehsicherer Fluid-Arbeitszylinder nach den vorgehenden Ansprüchen, dadurch gekennzeichnet, daß Mehrschichtgleitlager vorgesehen sind.4. Non-rotating fluid working cylinder according to the previous Claims, characterized in that multilayer plain bearings are provided. 5. Verdrehsicherer Fluid-Arbeitszylinder nach den vorgehenden Ansprüchen, dadurch gekennzeichnet, daß zwischen der festen Profilstange und der mit Innenprofil versehenen Kolbenstange Längswälzlager insbesondere Kugelumlaufbüchsen angeordnet sind.5. Non-rotating fluid working cylinder according to the previous ones Claims, characterized in that between the fixed Profile rod and the piston rod provided with an inner profile Longitudinal roller bearings, in particular recirculating ball bushings, are arranged. 6. Verdrehsicherer Fluid-Arbeitszylinder nach den vorgehen­ den Ansprüchen, dadurch gekennzeichnet, daß in der Innenfüh­ rung der hohlen Kolbenstange Fließkanäle angeordnet sind.6. Twist-proof fluid working cylinder according to the procedure the claims, characterized in that in the inner guide tion of the hollow piston rod flow channels are arranged. 7. Fluid-Arbeitszylinder mit vorgegebenem Verdrehregime, da­ durch gekennzeichnet, daß die verdrehfest im Zylinderboden angebrachte Profilführungsstange eine steilgewindeartige Ver­ drillung oder eine kurvenförmige Profiloberfläche aufweist.7. Fluid working cylinder with a predetermined twisting regime, because characterized in that the non-rotatable in the cylinder bottom attached profile guide rod a steep thread Ver drill or has a curved profile surface.
DE19873718308 1987-05-30 1987-05-30 Fluid working cylinder Withdrawn DE3718308A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873718308 DE3718308A1 (en) 1987-05-30 1987-05-30 Fluid working cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873718308 DE3718308A1 (en) 1987-05-30 1987-05-30 Fluid working cylinder

Publications (1)

Publication Number Publication Date
DE3718308A1 true DE3718308A1 (en) 1989-01-12

Family

ID=6328797

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873718308 Withdrawn DE3718308A1 (en) 1987-05-30 1987-05-30 Fluid working cylinder

Country Status (1)

Country Link
DE (1) DE3718308A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839142C2 (en) * 1997-09-19 2002-11-14 Smc Corp Fluid pressure cylinder device
DE10344404A1 (en) * 2003-09-25 2005-04-28 Ina Schaeffler Kg Hydraulic support element for valve gear of internal combustion engine has housing torsionally fixed in relation to cylinder head holder, with radial passage positioned at highest point of housing's circumferential section
CN100342143C (en) * 2004-07-22 2007-10-10 杨世祥 Two-stage screw internal foodback digital fluid cylinder
CN105179364A (en) * 2015-09-21 2015-12-23 济南大学 Combined connection device for preventing piston from rotating in radial direction and moving in axial direction
CN105443501A (en) * 2015-12-25 2016-03-30 河海大学常州校区 Built-in guide oil cylinder
US20190017502A1 (en) * 2017-07-12 2019-01-17 Robert Bosch Gmbh Piston pump assembly for a hydraulic power vehicle braking system
CN109681488A (en) * 2019-01-05 2019-04-26 叶伟强 A kind of rapid hydraulic oil cylinder
CN110792654A (en) * 2019-10-31 2020-02-14 吴贺 Static pressure support guide hydraulic cylinder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839142C2 (en) * 1997-09-19 2002-11-14 Smc Corp Fluid pressure cylinder device
DE10344404A1 (en) * 2003-09-25 2005-04-28 Ina Schaeffler Kg Hydraulic support element for valve gear of internal combustion engine has housing torsionally fixed in relation to cylinder head holder, with radial passage positioned at highest point of housing's circumferential section
CN100342143C (en) * 2004-07-22 2007-10-10 杨世祥 Two-stage screw internal foodback digital fluid cylinder
CN105179364A (en) * 2015-09-21 2015-12-23 济南大学 Combined connection device for preventing piston from rotating in radial direction and moving in axial direction
CN105443501A (en) * 2015-12-25 2016-03-30 河海大学常州校区 Built-in guide oil cylinder
US20190017502A1 (en) * 2017-07-12 2019-01-17 Robert Bosch Gmbh Piston pump assembly for a hydraulic power vehicle braking system
US10941764B2 (en) * 2017-07-12 2021-03-09 Robert Bosch Gmbh Piston pump assembly for a hydraulic power vehicle braking system
CN109681488A (en) * 2019-01-05 2019-04-26 叶伟强 A kind of rapid hydraulic oil cylinder
CN110792654A (en) * 2019-10-31 2020-02-14 吴贺 Static pressure support guide hydraulic cylinder
CN110792654B (en) * 2019-10-31 2022-06-21 烟台星辉劳斯堡液压机械有限公司 Static pressure support guide hydraulic cylinder

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