DE3718308A1 - Fluid working cylinder - Google Patents
Fluid working cylinderInfo
- 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- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 9
- 239000002783 friction material Substances 0.000 claims description 2
- 230000003134 recirculating effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
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
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
- F15B15/1419—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston of non-circular cross-section
-
- 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
- F15B15/1414—Characterised 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
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)
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)
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 |
-
1987
- 1987-05-30 DE DE19873718308 patent/DE3718308A1/en not_active Withdrawn
Cited By (10)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |