DE102004021905B3 - Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit - Google Patents
Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit Download PDFInfo
- Publication number
- DE102004021905B3 DE102004021905B3 DE200410021905 DE102004021905A DE102004021905B3 DE 102004021905 B3 DE102004021905 B3 DE 102004021905B3 DE 200410021905 DE200410021905 DE 200410021905 DE 102004021905 A DE102004021905 A DE 102004021905A DE 102004021905 B3 DE102004021905 B3 DE 102004021905B3
- Authority
- DE
- Germany
- Prior art keywords
- damper
- frequency
- spring
- vibration
- low
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/002—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Schwingungsdämpfer für den Hochfrequenzbereich und Niederfrequenzbereich für Stemmlanzen und Druckluftwerkzeuge allgemein.Vibration damper for the high frequency range and low frequency range for Stem lances and pneumatic tools in general.
Menschen sind an ihrem Arbeitsplatz häufig erheblichen mechanischen Schwingungen ausgesetzt, die ursächlich von verwendeten Arbeitshilfsmitteln verursacht werden. Insbesondere bei der Verwendung von durch Druckluft betriebenen Stemmlanzen, Hämmern und vergleichbaren Druckluftwerkzeugen entstehen Vibrationen, Erschütterungen und Stöße, die vom Werkzeug auf den menschlichen Körper übertragen werden. Bei häufiger und lang anhaltender Exposition von Teilkörperschwingungen können diese zum Hand-Arm-Schwingungssyndrom führen, welches irreversible degenerative Veränderungen an Knorpel, Knochen, Hand- und Armgelenk, Durchblutungsstörungen der Hände und/oder der peripheren Nerven der Hand verursacht.People are often significant at their workplace exposed to mechanical vibrations, the cause of used working aids caused. Especially when using by compressed air operated lances, hammering and comparable pneumatic tools cause vibrations, vibrations and shocks that be transferred from the tool to the human body. In more frequent and long-term exposure of partial body vibrations can this to hand-arm vibration syndrome to lead, which irreversible degenerative changes to cartilage, bone, Hand and wrist joint, circulatory disorders of the hands and / or caused by the peripheral nerve of the hand.
Vibrationen stellen mechanische Schwingungen dar und entstehen durch die Einwirkung von äußeren Kräften auf feste Strukturen. Die Schwingungen entstehen durch wechselseitige Speicherung der Energie innerhalb der Struktur in eine dynamische Hin- und Herbewegung. Dieser dynamische Vorgang ist charakterisiert durch die Größe der Auslenkung, die Amplitude, und der Häufigkeit des Wechsels der Bewegungsrichtung, der Frequenz.vibrations represent mechanical vibrations and are caused by the action from external forces solid structures. The vibrations are created by reciprocal Storage of energy within the structure in a dynamic Float. This dynamic process is characterized by the size of the deflection, the amplitude, and the frequency the change of direction of movement, the frequency.
In der Praxis werden tieffrequente Schwingungen als Erschütterung oder Stoß, und hochfrequente Schwingungen als Vibration bezeichnet.In In practice, low-frequency vibrations as vibration or push, and high-frequency vibrations called vibration.
Zum Verringern der Amplitude von periodischen Bewegungen zwischen Teilen einer Maschine werden Schwingungsdämpfer, bei einem Auto z.B. Stoßdämpfer, eingesetzt, welche die Bewegungsenergie in Wärmeenergie umwandeln. Insbesondere soll hierbei die Bildung von Resonanzschwingungen verhindert werden.To the Decrease the amplitude of periodic movements between parts In a machine vibration damper, in a car e.g. Shock absorbers, used, which the kinetic energy into heat energy convert. In particular, this should prevent the formation of resonance vibrations become.
Dämpfer besitzen stets eine Antriebs- und eine Antriebsseite, welche beweglich miteinander verbunden und für einen bestimmten Geschwindigkeitsbereich der Bewegung ausgelegt sind, in dem die Dämpfung optimal funktioniert. Bei darüber hinausgehenden schnelleren Bewegungen wirkt der Dämpfer dagegen wie ein starres Übertragungselement welches die Bewegung von der Antriebsseite auf die Abtriebsseite überträgt, und bei zu langsamer Bewegung verformt sich der Dämpfer ohne die Bewegung abzudämpfen.Own damper always a drive and a drive side, which are movably connected and for designed a specific speed range of movement are in which the damping works optimally. At about Beyond faster movements, the damper acts against it like a rigid transmission element which transmits the movement from the drive side to the output side, and if the movement is too slow, the damper deforms without damping the movement.
Bedingt durch unterschiedliche Beschaffenheit von zu bearbeitenden Oberflächen und Werkstücken entstehen bei der Anwendung von Stemmlanzen, Hämmern und vergleichbaren Werkzeugen unterschiedlichste Schwingungen im hoch- und niederfrequenten Bereich. So verursacht das Abschaben eines Stahlträgers von anhaftenden Beton mithilfe einer Druckluft betriebenen Stemmlanze harte Schläge beim Auftreffen des Schabers auf den Stahlträger sowie eine sich aufschaukelnde hochfrequente Schwingung die oberhalb der Schlagfrequenz des Hammers liegt. Auch der Angriffswinkel der z.B. Stemmlanze bewirkt unterschiedliche Schwingungen.conditioned by different nature of surfaces to be machined and workpieces arise when using lances, hammers and similar tools Different vibrations in the high and low frequency range. Thus, the scraping of a steel beam causes adhering concrete Using a compressed air powered lance hard blows when Impact of the scraper on the steel beam and a aufschaukelnde high-frequency vibration that is above the beat frequency of the hammer. Also, the attack angle of e.g. Stemm lance causes different Vibrations.
Der Erfindung liegt die Schaffung einer Möglichkeit zugrunde hochfrequente und niederfrequente Schwingungen unabhängig von der Beschaffenheit der zu bearbeitenden Fläche oder des zu bearbeitenden Werkstücks abzubauen um nachhaltigen schädlichen Auswirkungen entgegenzuwirken.Of the Invention is the creation of a possibility based high-frequency and low frequency vibrations regardless of the nature of the to be machined surface or the workpiece to be machined reduce sustainable harmful Countering effects.
Erfindungsgemäß wird dies dadurch erreicht, dass der hochfrequente Schwingungsanteil durch ein Druckluftpolster in Form der Umwandlung in Wärmeenergie und der niederfrequente Schwingungsanteil durch mechanische Verformung einer vorgespannten Feder abgebaut werden, und zwar derart, dass die Niederfrequenzdämpfung erst nach Beaufschlagung mit Druckluft und arbeitsamen Wirkens des Hochfrequenzdämpfers erfolgt. Derart ist es möglich auch über der in der VDI2057 genannten Frequenzbewertung genannten Frequenzbereiche von 8 bis 1000Hz bzw. 6,3 bis 1250 Hz liegende Frequenzen abzubauen.According to the invention this is achieved in that the high-frequency vibration component by a compressed air cushion in the form of conversion into heat energy and the low-frequency Vibration fraction due to mechanical deformation of a preloaded spring be degraded, in such a way that the low-frequency attenuation after exposure to compressed air and laborious action of the high-frequency damper takes place. That's how it's possible also over the frequency ranges mentioned in VDI2057 from 8 to 1000Hz or 6.3 to 1250 Hz to reduce frequencies.
- 11
- Verschraubungscrew
- 22
- Drehsperre und Arbeitswegbegrenzerturnstile and Arbeitswegbegrenzer
- 33
- Äußerer KolbenOuter piston
- 44
- Druckscheibe Federthrust washer feather
- 55
- Sicherungfuse
- 66
- Zylindercylinder
- 77
- Ruhe-RückholfederResting return spring
- 88th
- Druckfedercompression spring
- 99
- PassfederAdjusting spring
- 1010
- Innerer Kolbeninner piston
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410021905 DE102004021905B3 (en) | 2004-05-04 | 2004-05-04 | Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410021905 DE102004021905B3 (en) | 2004-05-04 | 2004-05-04 | Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004021905B3 true DE102004021905B3 (en) | 2005-11-03 |
Family
ID=35070693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410021905 Expired - Fee Related DE102004021905B3 (en) | 2004-05-04 | 2004-05-04 | Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004021905B3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010040173A1 (en) * | 2010-09-02 | 2012-03-08 | Hilti Aktiengesellschaft | Hand tool |
CN102744715A (en) * | 2011-04-20 | 2012-10-24 | 喜利得股份公司 | Hand machine tool and absorber |
CN106224427A (en) * | 2016-09-21 | 2016-12-14 | 太仓德力高机电科技有限公司 | A kind of industry buffer |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2432877A (en) * | 1944-03-04 | 1947-12-16 | Mary Leinster Francis | Pneumatic tool |
DE1011819B (en) * | 1953-02-17 | 1957-07-04 | Goetzewerke | Pneumatic hammer |
DE2204160A1 (en) * | 1971-02-01 | 1972-08-10 | Narzadi, N.P., Prag | Pneumatic impact device |
DE7514442U (en) * | 1975-05-05 | 1975-11-27 | Sieke H | HYDRAULIC HAMMER |
DE2710920C2 (en) * | 1976-03-15 | 1981-12-10 | Kjell Söderhamn Edström | Vibration-dampened impact mechanism with pressure medium drive |
DE3117149C2 (en) * | 1981-04-30 | 1984-05-24 | Moskovskoe vysšee techničeskoe učilišče imeni N.E. Baumana, Moskva | Pneumatic impact tool |
US5269381A (en) * | 1991-11-04 | 1993-12-14 | Atlas Copco Tools Ab | Vibration damped hand held rivet bucking tool |
-
2004
- 2004-05-04 DE DE200410021905 patent/DE102004021905B3/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2432877A (en) * | 1944-03-04 | 1947-12-16 | Mary Leinster Francis | Pneumatic tool |
DE1011819B (en) * | 1953-02-17 | 1957-07-04 | Goetzewerke | Pneumatic hammer |
DE2204160A1 (en) * | 1971-02-01 | 1972-08-10 | Narzadi, N.P., Prag | Pneumatic impact device |
DE7514442U (en) * | 1975-05-05 | 1975-11-27 | Sieke H | HYDRAULIC HAMMER |
DE2710920C2 (en) * | 1976-03-15 | 1981-12-10 | Kjell Söderhamn Edström | Vibration-dampened impact mechanism with pressure medium drive |
DE3117149C2 (en) * | 1981-04-30 | 1984-05-24 | Moskovskoe vysšee techničeskoe učilišče imeni N.E. Baumana, Moskva | Pneumatic impact tool |
US5269381A (en) * | 1991-11-04 | 1993-12-14 | Atlas Copco Tools Ab | Vibration damped hand held rivet bucking tool |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010040173A1 (en) * | 2010-09-02 | 2012-03-08 | Hilti Aktiengesellschaft | Hand tool |
US8985236B2 (en) | 2010-09-02 | 2015-03-24 | Hilti Aktiengesellschaft | Handheld power tool |
CN102744715A (en) * | 2011-04-20 | 2012-10-24 | 喜利得股份公司 | Hand machine tool and absorber |
CN102744715B (en) * | 2011-04-20 | 2016-08-31 | 喜利得股份公司 | Vibroshock |
CN106224427A (en) * | 2016-09-21 | 2016-12-14 | 太仓德力高机电科技有限公司 | A kind of industry buffer |
CN106224427B (en) * | 2016-09-21 | 2018-01-05 | 太仓德力高机电科技有限公司 | A kind of industrial buffer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20111201 |