DE2744406A1 - Piston engine shaft pulley disc - has closed cover over bearer sleeve face side turned away from shaft fixture - Google Patents

Piston engine shaft pulley disc - has closed cover over bearer sleeve face side turned away from shaft fixture

Info

Publication number
DE2744406A1
DE2744406A1 DE19772744406 DE2744406A DE2744406A1 DE 2744406 A1 DE2744406 A1 DE 2744406A1 DE 19772744406 DE19772744406 DE 19772744406 DE 2744406 A DE2744406 A DE 2744406A DE 2744406 A1 DE2744406 A1 DE 2744406A1
Authority
DE
Germany
Prior art keywords
face side
turned away
belt pulley
shaft
groove body
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Withdrawn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
DE19772744406
Other languages
German (de)
Inventor
Lothar Kortner
Reinhold Dipl Ing Mueller
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19772744406 priority Critical patent/DE2744406A1/en
Publication of DE2744406A1 publication Critical patent/DE2744406A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/06—Endless member is a belt
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Abstract

Pulley disc for a piston activated engine working shaft has a bearer body which is hollow and cylindrical rigidly attached to the shaft flange or similar fitment. On the periphery of the bearer body a grooved body with a wedge groove is fitted in a vibration damped manner. The face side (23) of the bearer sleeve (9) turned away from the fixture (2, 10) on the working shaft (1) has a closed cover over it which is firmly connected to the grooved sleeve (12). The face side end (24) of a protective ring (20) turned away from the grooved sleeve (12) locates without metal contact on a cylindrical shoulder (21) via the intermediary of a rubber ring (22).

Description

Schallisolierende KeilriemenscheibeSound-insulating V-belt pulley

Die Erfindung betrifft eine schallisolierende Keilriemenscheibe nach dem Oberbegriff von Anspruch 1.The invention relates to a sound-insulating V-belt pulley according to the preamble of claim 1.

Wassergekühlte Hubkolbenmaschinen sind vor allen Dingen an der vorderen Stirnseite der Zylinderreihe besonders laut.Water-cooled reciprocating engines are above all at the front Front of the cylinder row particularly loud.

Zur Reduzierung der Schallabstrahlung derartiger llubkolbenmaschinen hat man schon die im Oberbegriff von Anspruch 1 erwähnte elastische Zwischenlage zwischen Nabenteil und Umfangsteil von Keilriemenscheiben vorgeschlagen.To reduce the sound radiation of such reciprocating piston machines you already have the elastic intermediate layer mentioned in the preamble of claim 1 Proposed between the hub part and the peripheral part of V-belt pulleys.

hierdurch werden zweifellos die schallabstrahlenden Flächen, die mit der schwingungserregenden Kurbelwelle akustisch leitend verbunden sind, reduziert; es ist dadurch insgesamt eine geringere Schallabstrahlung der Hubkolbenmaschine nach vorne zu erwarten.this will undoubtedly reduce the sound-radiating surfaces with the vibration-causing crankshaft are acoustically conductively connected, reduced; this means that overall there is less sound radiation from the reciprocating piston engine expected forward.

Aufgabe de:r Erfindung ist es, die Schallabstrahlung einer derartigen Keilriemenscheibe weiter zu verbessern.The object of the invention is to reduce the sound radiation of such a To further improve V-belt pulley.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale von Anspruch 1 gelöst. Demnach werden, ausgehend von dem bereits akustisch abgekoppelten äußeren Teil der Keilriemenscheibe dio noch verbleibenden Flächen der nichtabgekoppelten schallerregenden Nabe schalldämpfend gekapselt.According to the invention, this object is achieved by the characterizing features solved by claim 1. Accordingly, starting from the already acoustically decoupled outer part of the V-belt pulley dio remaining areas of the uncoupled sound-absorbing hub encapsulated in a sound-absorbing manner.

Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausftihrungsbeispieles nachfolgend noch kurz erläutert; dabei zeigt die Figur einen achsparallelen Schnitt durch eine Keilriemenscheibe nach der Erfindung, die an einen Kurbelwellenflansch einer Brennkraftmaschine angeschraubt ist.The invention is based on an exemplary embodiment shown in the drawing briefly explained below; the figure shows an axially parallel section by a V-belt pulley according to the invention, which is attached to a crankshaft flange an internal combustion engine is screwed.

An den Wellenflansch 2 einer Kurbelwelle 1 sind mittels Schrauben 4 zwei Anschraubflansche 8 und 10 angeschraubt. Der Anschraubflansch 8 gehört zu einem Schwingungsdämpfer 5, 6 zur Dämpfung von Torsionsschwingungen der Kurbelwelle. An einem sich im wesentlichen zylindrisch erstreckenden Primärteil 5 ist unter Zwischenschaltung einer schwingungsdämpfenden Masse 7 ein ringförmiges Sekundärteil 6 mit relativ großer Masse und definierter Massenverteilung am Umfang angeordnet. Der Befestigungsflansch 1o geht über in einen hohl ausgebildeten zylindrischen Teil 11, welcher im wesentlichen den Tragkörper 9 der Keilriemenscheibe bildet. Dieser Nabenteil der Keilriemenscheibe ist schallhart an die schwingungserregende Kurbelwelle 1 angekoppelt.On the shaft flange 2 of a crankshaft 1 are screws 4 two screw-on flanges 8 and 10 screwed on. The screw-on flange 8 belongs to a vibration damper 5, 6 for damping torsional vibrations of the crankshaft. On a substantially cylindrically extending primary part 5 is interposed a vibration-damping mass 7, an annular secondary part 6 with relative large mass and defined mass distribution on the circumference. The mounting flange 1o merges into a hollow cylindrical part 11, which essentially forms the support body 9 of the V-belt pulley. This hub part of the V-belt pulley is coupled acoustically to the vibration-inducing crankshaft 1.

Um den Tragkörper 9 herum ist unter Zwischenschaltung einer schwingungsdämpfenden Gummimasse 15 der Rillenkörper 12 der Keilriemenscheibe angeordnet. Beim dargestellten AusfUhrungsbeispiel besteht der Rillenkörper aus einem im wesentlichen zylindrischen Innenteil 13 und aus einem gerillten äußeren Teil 14, welcher die Keilrillen 3 zur Aufnahme der Keilriemen 16 trägt. Die Gummimasse 15 überträgt radial, axial und peripher gerichtete Kräfte von dem Rillenkörper 12 auf den Tragkörper 9 und umgekehrt, wobei jedoch hochfrequente Schwingungen, die von der Kurbelwelle ausgehen, von dem Rillenkörper ferngehalten werden.To the support body 9 around is with the interposition of a vibration damping Rubber mass 15 of the groove body 12 of the V-belt pulley is arranged. When shown Execution example the groove body consists of a substantially cylindrical inner part 13 and a grooved outer part 14, which the V-grooves 3 for receiving the V-belt 16 carries. The rubber mass 15 transmits radially, axially and peripherally directed forces from the groove body 12 on the support body 9 and vice versa, but with high-frequency vibrations emitted by the crankshaft go out, are kept away from the groove body.

Um die Keilriemenscheibe montieren zu körnigen, muß das innere des hohlen Tragkörpers 9 zugänglich sein. Damit andererseits die großen Innenflächen des Tragkörpers nicht die Schallschwingungen nach außen abstrahlen können, ist der Ilohlraum an der offenen Stirnseite 23 nach auDen gekapselt. Hierzu ist an dem akustisch abgekoppelten Rillenkörper 12 ein radial nach innen ragender Befestigungsflansch 17 angebracht, an den ein Verschlußdeckel 18 angeschraubt ist, der die schallabstrahlende Öffnung des hohlen Tragkörpers 9 verschließt. Der Deckel muß aus schallabsorbierendem Material in ausreichender Stärke hergestellt sein.In order to mount the V-belt pulley, the inside of the hollow support body 9 be accessible. On the other hand, there are the large inner surfaces of the support body cannot radiate the sound vibrations to the outside, is the The hollow space is encapsulated to the outside at the open end face 23. This is done acoustically on the uncoupled groove body 12 a radially inwardly projecting mounting flange 17 attached, to which a cap 18 is screwed, the sound radiating Opening of the hollow support body 9 closes. The lid must be made of sound-absorbing material Material must be made of sufficient strength.

Auf einem axial zwischen der Schwingungsdämpfungsmasse 15 und dem Flansch lo sich orstreckenden mit 19 bezeichneten Bereich kann der Tragkörper 9 auch nach außen Schallschwingungen abstrahlen. Um auch diese Schallschwingungen nicht nach außen gelangen zu lassen, ist der äußere Teil 14 des Rillenkörpers 12 einstückig mit einem daran anschließenden Schutzring 20 ausgebildet, der die Schwingungsflächen 19 überdeckt und der sich schalldicht aber berührungsfrei bis zu dem ebenfalls akustisch abgekoppelten Sekundärteil des Schwingungsdämpfers 5, 6 erstreckt. Hierzu ist an dem Sekundärteil eine zylindrische Schulter 21 vorgesehen, in welche eine Umfangsrille eingearbeitet ist und in die ein im Querschnitt kreisförmiger Gummiring 22 eingelegt ist. Durch diese dichtende elastische Auflage der offenen Stirnseite des Schutzringes können die Schallwellen nicht nach auDen dringen; aufgrund der Vermeidung einer metallischen Berührung der aneinander angrenzenden Teile wird eine akustische Kopplung und ein neuer Herd von Schallschwingungen vermieden.On an axially between the vibration damping mass 15 and the The support body 9 can extend in the area designated by 19 also emit sound vibrations to the outside. To these sound vibrations too The outer part 14 of the groove body 12 is not to be let out to the outside integrally formed with an adjoining protective ring 20, which the vibrating surfaces 19 and which is soundproof but contact-free up to to the also acoustically decoupled secondary part of the vibration damper 5, 6 extends. For this purpose, a cylindrical shoulder 21 is provided on the secondary part, into which a circumferential groove is incorporated and in which a circular cross-section Rubber ring 22 is inserted. Through this sealing elastic support of the open The sound waves cannot penetrate the front of the protective ring; because of the avoidance of a metallic contact of the adjoining parts an acoustic coupling and a new center of sound vibrations avoided.

Aufgrund der Kapselung der verbleibenden schallabstrahlenden Flächen des akustisch nicht abgekoppelten Tragkörpers der Keilriemenscheibe ist der Geräuschpegel einer derartigen Keilriemenscheibe wesentlich niedriger als ohne die Kapselung.Due to the encapsulation of the remaining sound-emitting surfaces of the acoustically uncoupled support body of the V-belt pulley is the noise level such a V-belt pulley is much lower than without the encapsulation.

Claims (3)

Ansprüche $ Keilriemenscheibe für eine Arbeitswelie insbesondere einer liubkolbenmaschine, mit an einen Flansch od. dgl. der Arbeitswelle starr befostigbaren im wesentlichen zylindrischen vorzugsweise hohl ausgebildeten Tragkörper, auf dessen Umfang unter Zwischenschaltung einer elastischen schwingungsdämpfenden Masse ein eilrillen aufweisender Rillenkörper verdrehfest aber schwiiigungsdämpfeiid befestigt ist, d a d u r c h g e k e n n z e i c h n e t daß die von der Befestigung (2, lo) an der Arbeitswelle (1) abgekehrte Stirnseite (23) des Tragkörpers (9) durch einen geschlossenen mit dem Rillenkörper (12) fest verbundenen Deckel (18) überdeckt ist.Claims $ V-belt pulley for a particular type of work liubkolbenmaschine, with or on a flange. The like. The working shaft can be rigidly attached substantially cylindrical, preferably hollow, support body on which Scope with the interposition of an elastic vibration-damping mass Grooved body having eilrillen fixed against rotation but schwiiigungsdämpfeiid is that it is not possible to use the fastening (2, lo) on the output shaft (1) facing away from the end face (23) of the support body (9) by a closed with the groove body (12) firmly connected cover (18) is covered. 2. Keilriemenscheibe nach Anspruch 1, d a d u r c h g e -k e n n z e i c h n e t , daß ein zwischen Rillekörper (12) und Befestigungsstelle (2, lo) mit der Arbeitswelle (1) freiliegender Umfang (19) durch einen fest mit dem Rillenkörper (12) verbundenen Schutzring (2o) überdeckt ist, der schalldichtend an andore mit umlaufende Teile der Arbeitswelle (1) oder mit ihr verbundener Teile (G, 21) heranreicht. 2. V-belt pulley according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that one between the groove body (12) and the fastening point (2, lo) with the working shaft (1) exposed circumference (19) by a fixed to the groove body (12) connected protective ring (2o) is covered, the sound-proofing at andore with rotating parts of the working shaft (1) or parts connected to it (G, 21) reaches. 3. Keilriemenscheibe nach Anspruch 2, d a d u r c h g e -k e n n z e i c h n e t , daß das vom Rillenkörper (12) abgekehrte stirnseitige Ende (24) des Schutzringes (20) unter Zwischenschaltung eines Gummiringes (22) an einer zylindrischen Schulter (21) ohne metallische Berührung anliegt.3. V-belt pulley according to claim 2, d a d u r c h g e -k e n n z e i c h n e t that the front end (24) facing away from the groove body (12) of the protective ring (20) with the interposition of a rubber ring (22) on a cylindrical Shoulder (21) rests without metallic contact.
DE19772744406 1977-10-03 1977-10-03 Piston engine shaft pulley disc - has closed cover over bearer sleeve face side turned away from shaft fixture Withdrawn DE2744406A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772744406 DE2744406A1 (en) 1977-10-03 1977-10-03 Piston engine shaft pulley disc - has closed cover over bearer sleeve face side turned away from shaft fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772744406 DE2744406A1 (en) 1977-10-03 1977-10-03 Piston engine shaft pulley disc - has closed cover over bearer sleeve face side turned away from shaft fixture

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DE2744406A1 true DE2744406A1 (en) 1979-04-12

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114998A1 (en) * 1980-04-18 1982-01-14 List, Hans, Prof. Dipl.-Ing. Dr.Dr.h.c., Graz SOUND-INSULATED ENCLOSED ENGINE
DE3309422A1 (en) * 1983-03-16 1984-09-20 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen V-belt pulley
DE3428894A1 (en) * 1984-08-04 1986-02-13 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg VIBRATION DAMPER FOR DAMPING ROTATING MASSES
DE3612370A1 (en) * 1986-04-12 1987-10-15 Bayerische Motoren Werke Ag VIBRATION DAMPER, ESPECIALLY FOR THE CRANKSHAFT OF A PISTON PISTON COMBUSTION ENGINE
FR2605373A1 (en) * 1986-10-21 1988-04-22 Man Nutzfahrzeuge Gmbh TORSION OSCILLATION DAMPER PROVIDED WITH A COUPLING UNIT WITH GROOVED PULLEY FOR TRAPEZOIDAL BELTS
FR2611846A1 (en) * 1987-03-04 1988-09-09 Dampers Torsion damper of elastic type
US4882944A (en) * 1987-07-07 1989-11-28 Metzeler Gmbh Torsional vibration damper
EP0427916A2 (en) * 1989-11-16 1991-05-22 Firma Carl Freudenberg Process for the production of torsional damper
EP0517184A2 (en) * 1991-06-05 1992-12-09 Tesma International Inc Serpentine drive with coil spring alternator connection
DE19653398A1 (en) * 1996-12-20 1998-06-25 Kloeckner Humboldt Deutz Ag V-belt pulley for internal combustion engine of motor vehicle
DE10245295A1 (en) * 2002-09-27 2004-04-08 Audi Ag Vibrationally excitable component assembly comprising, in particular, the rotor and impeller of a cooler fan, includes a damping element located in an air gap between the rotor and the impeller

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114998A1 (en) * 1980-04-18 1982-01-14 List, Hans, Prof. Dipl.-Ing. Dr.Dr.h.c., Graz SOUND-INSULATED ENCLOSED ENGINE
DE3309422A1 (en) * 1983-03-16 1984-09-20 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen V-belt pulley
DE3428894A1 (en) * 1984-08-04 1986-02-13 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg VIBRATION DAMPER FOR DAMPING ROTATING MASSES
DE3612370A1 (en) * 1986-04-12 1987-10-15 Bayerische Motoren Werke Ag VIBRATION DAMPER, ESPECIALLY FOR THE CRANKSHAFT OF A PISTON PISTON COMBUSTION ENGINE
EP0241808A2 (en) * 1986-04-12 1987-10-21 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Vibration damper, particularly for the crankshaft of a piston combustion engine
EP0241808A3 (en) * 1986-04-12 1988-01-13 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Vibration damper, particularly for the crankshaft of a piston combustion engine
DE3635702A1 (en) * 1986-10-21 1988-05-05 Man Nutzfahrzeuge Gmbh TORQUE VIBRATION DAMPER WITH COUPLED V-BELT UNIT
GB2196412A (en) * 1986-10-21 1988-04-27 Man Nutzfahrzeuge Gmbh Torsional vibration damper for damping rotating masses
FR2605373A1 (en) * 1986-10-21 1988-04-22 Man Nutzfahrzeuge Gmbh TORSION OSCILLATION DAMPER PROVIDED WITH A COUPLING UNIT WITH GROOVED PULLEY FOR TRAPEZOIDAL BELTS
GB2196412B (en) * 1986-10-21 1990-12-12 Man Nutzfahrzeuge Gmbh Torsional vibration damper for damping rotating masses
FR2611846A1 (en) * 1987-03-04 1988-09-09 Dampers Torsion damper of elastic type
US4882944A (en) * 1987-07-07 1989-11-28 Metzeler Gmbh Torsional vibration damper
EP0427916A2 (en) * 1989-11-16 1991-05-22 Firma Carl Freudenberg Process for the production of torsional damper
EP0427916A3 (en) * 1989-11-16 1991-09-18 Firma Carl Freudenberg Process for the production of torsional damper
EP0517184A2 (en) * 1991-06-05 1992-12-09 Tesma International Inc Serpentine drive with coil spring alternator connection
EP0517184A3 (en) * 1991-06-05 1993-07-07 Tesma International Inc Serpentine drive with coil spring alternator connection
DE19653398A1 (en) * 1996-12-20 1998-06-25 Kloeckner Humboldt Deutz Ag V-belt pulley for internal combustion engine of motor vehicle
DE10245295A1 (en) * 2002-09-27 2004-04-08 Audi Ag Vibrationally excitable component assembly comprising, in particular, the rotor and impeller of a cooler fan, includes a damping element located in an air gap between the rotor and the impeller
DE10245295B4 (en) * 2002-09-27 2006-01-26 Audi Ag Oscillable assembly with damping

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