US2127888A - Vibration reducing device - Google Patents

Vibration reducing device Download PDF

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Publication number
US2127888A
US2127888A US50992A US5099235A US2127888A US 2127888 A US2127888 A US 2127888A US 50992 A US50992 A US 50992A US 5099235 A US5099235 A US 5099235A US 2127888 A US2127888 A US 2127888A
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United States
Prior art keywords
runway
runways
lugs
rolling
mass
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 - Lifetime
Application number
US50992A
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English (en)
Inventor
Sarazin Raoul Roland Raymond
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Individual
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Individual
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    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2121—Flywheel, motion smoothing-type
    • Y10T74/213—Damping by increasing frictional force

Definitions

  • the present invention relates to vibration rehereinafter referred to in the following detailed ducing devices of the kind including at least one description.
  • the examples of the invention hereinafter dein such manner as to be able to oscillate with scribed refer to the case of a device for reducing respect thereto.
  • the invention is more especially, the vibrations of the shaft I of a multi-cylinder I although not exclusively concerned, with devices engine. 5 of this kind in which the movable masses are
  • This device includes a plurality of masses 2, suspended on the vibrating part in a manner each connected to shaft I through at least one analogous to the arrangement of bifllar pendurolling body 3 adapted to roll. on the one hand, 0 lums. along a runway connected to the shaft, and, on
  • the object of the present invention is to prothe other hand, along a runway connected to vide a device of this kind which is better adapted the mass. to meet the requirements of actual practice than According to the invention, the runway carried devices of the same kind used up to this time. by one of the elements to be connected together According to the essential feature of the presis a runway 4 extending from one side to the 15 cut inventiomthe two elements above referred to, other of said element.
  • the other element includes are connected together by means of a rolling two parts forming lugs extending on either side body cooperating with runways carried by these of said runway respectively, each of said lugs two elements, the runway carried by one element carrying a runway 5 or 6 overlapping the. first 20 extending from one face to the other face therementioned runway. of, while the other element includes two lugs or Finally, a rolling body or structure 3 extends similar parts provided on either side of said through the overlapping parts of the spaces limflrst mentioned element close to said faces thereited by these runways, so as to be able to cooper- 5 of respectively, runways overlapping the first ate with these three runways.
  • this rolling body includes at least two disheld and maintained in position between the tinct parts adapted to turn freely with respect un ay c d y n Of e e e ements and the to each other about a common axis, one of these runways carried by the other element.
  • runways being, for instance 40 Preferred embodiments of the present invena ri d y p n sw v r s der that tion will be hereinafter described with reference it is more advantageous to give t e Out i es to the accompanying drawing, given merely by the shape of closed curves, the runways being, way of example, and in which: in this case, formed in holes provided in the ele- Fig. 1 shows, partly in elevation and partly ments to be connected together.
  • the l n y must t i h a made according to a first embodiment of the intam-play n t s h les (sa a play of s me milvention; limeters in the case of a rolling body of a diameter Figs. 2, 3 and 4 are longitudinal sectional equal to 10 millimeters).
  • FIG. 5 and 6 are diagrammatical views illuspend upon the shape of the runways and that of trating the principle of working of the device the rolling bodies cooperating therewith.
  • the outline l of runway 4 is a circular cylindrical surface of a radius equal to n
  • the outline 8 of runways 5 and 6 also is a cylindrical circular surface the radius 1': of which is equal to n
  • the rolling body 3 is a portion of a circular cylinder of the same diameter over its whole length and of a radius equal to n.
  • the center of curvature M1 is rigidly connected to the mass and the center of curvature M2 is rigidly connected to the shaft.
  • runways 5 and 6 are provided in two lugs carried either by a plate ID rigidly connected to shaft i (as in the examples of Figs. 1, 3 and 4) or by mass 2 (as in the case of Fig. 2).
  • These two lugs are disposed at an interval from each other sufficient for fitting between them at least one part of the other element.
  • the runways consist of rings of tempered metal driven with a force fit into said lugs and into the element disposed between said lugs.
  • the rolling bodies 3 are mere cylinders consisting of a single piece, for instance of steel, which are kept in position transversely through any suitable means, such as small end plates II.
  • the two lugs are rigid with plate l and masses 2. are disposed between these lugs.
  • plate I0 is fixed to the crank pin of a crankshaft and masses 2 are recessed so as to fit on either side of said plate.
  • the rolling bodies are made as in the embodiment of Fig. 1.
  • the rolling bodies consist of two different parts which can turn freely with respect to each other about a common axis, one of these parts being adapted to roll on runway I and the other one on runway 5, 6.
  • Each of these rolling bodies includes a central part l2 adapted to run along runway 4. This central portion is provided, on either side thereof, with coaxial trunnions on which two rollers l4 adapted to roll on runways 5, 8 are mounted freely.
  • bushings l3 are interposed between these trunnions and these rollers. Any lateral displacement of the composite rolling body thus formed is prevented for instance by small plates which screw from the outside on the lugs of plate I! and which are provided with stops l6 of tempered metal so as to avoid wear and tear.
  • 011 under pressure is fed through a conduit I! provided in shaft l and then through a conduit I1 communicating with the preceding one and advantageously provided inside the very mass of the bolt l9 through which the vibration damper is secured to shaft I, a conduit l8 conveying the lubricant to the runways themselves.
  • the rollers may be located in unsymmetrical position. If the rolling bodies are made of a single part, they are then wedged in the space common to both runways and, in view of the frictional stresses that are developed, said rolling bodies cannot be disengaged and come back into symmetrical position.
  • the provision of rolling bodies made of several parts rotatable with respect to one another fully avoids this drawback since one of these parts can roll on the runway corresponding to the mass independently of the rolling movement of the other part with reference to the runway of the plate.
  • the rolling bodies are not made of several distinct parts movable with respect to one another. But they are provided with toothed rings and 2
  • the toothed rings 20, as well as toothed ring 2i are fixed on a central rod by means of a key 22 which prevents them from turning with respect to said rod. Furthermore they are so devised as to prevent any axial displacement.
  • the internal gear 23 which coacts with toothed ring 2! is keyed with respect to mass 2 by means of a key 24, while the internal gears 25 which coact with toothed ring 20 are maintained by'means of keys 26 so as to prevent them from rotating with respect to plate Ill.
  • the pitch circles of the internal gears have the same respective diameters as the runways to which they correspond.
  • the rolling bodies may also have a shape different from that of the cylinders shown in the drawing. They may consist, for instance, of any type of cylinder or of any other shape, the generatrix of which is a curve.
  • the shape of the runways is not necessarily that of a cylinder. It may also be of any other kind. Some shapes have the advantage that the center of the oscillation of the masses that damp the vibrations may be displaced in a predetermined way during the oscillation and that the pendular curve may be given any desired curvature. This advantage may also be obtained when the cylindrical runways have diii'erent radii of curvature, respectively.
  • the rolling bodies may consist of members which are of any suitable shape.
  • I may provide suitable stops such as screws 21 adapted to bear, through their ends, against the hub of plate ll, thus limiting the movement of the mass.
  • the principle of the invention may also be applied to any devices whatever which are intended to reduce vibrations and for instance to devices for absorbing the longitudinal vibrations of bodies moving along a rectilinear path.
  • a device for reducing the vibrations of a moving part which comprises in combination two elements including a mass and a member connected to said moving part, a runway carried by one of the two aforesaid elements extending from one side of said last mentioned element to the other side thereof, two lugs carried by the other element, one disposed on each-side of said runway respectively, a runway carried by each of said lugs respectively on each side of the first mentioned runway and overlapping it, a cylindrical rolling body of less diameter than the least dimension oi.
  • either runway adapted to cooperate with these three runways and extending longitudinally thereof, and two stops for preventing axial displacements of the rolling body, said stops being secured respectively to each of said lugs on either side of said rolling body RAOUL ROLAND RAYMOND BARAZIN.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Vibration Prevention Devices (AREA)
US50992A 1934-12-11 1935-11-21 Vibration reducing device Expired - Lifetime US2127888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2127888X 1934-12-11

Publications (1)

Publication Number Publication Date
US2127888A true US2127888A (en) 1938-08-23

Family

ID=7986264

Family Applications (1)

Application Number Title Priority Date Filing Date
US50992A Expired - Lifetime US2127888A (en) 1934-12-11 1935-11-21 Vibration reducing device

Country Status (5)

Country Link
US (1) US2127888A (xx)
AT (1) AT149236B (xx)
BE (1) BE412213A (xx)
CH (1) CH187490A (xx)
DK (1) DK53980C (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289770A (en) * 1963-08-14 1966-12-06 Bolkow Gmbh Helicopter rotor system
US5295411A (en) * 1993-06-22 1994-03-22 Speckhart Frank H Torsional vibration absorber system
US20130283966A1 (en) * 2010-12-24 2013-10-31 Schaeffler Technologies AG & Co., KG Centrifugal force pendulum device
WO2015192841A1 (de) * 2014-06-20 2015-12-23 Schaeffler Technologies AG & Co. KG Fliehkraftpendel
WO2019001851A1 (de) * 2017-06-30 2019-01-03 Zf Friedrichshafen Ag Geschmiertes tilgersystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4395031B2 (ja) * 2004-08-27 2010-01-06 本田技研工業株式会社 エンジンにおける防振構造

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289770A (en) * 1963-08-14 1966-12-06 Bolkow Gmbh Helicopter rotor system
US5295411A (en) * 1993-06-22 1994-03-22 Speckhart Frank H Torsional vibration absorber system
US20130283966A1 (en) * 2010-12-24 2013-10-31 Schaeffler Technologies AG & Co., KG Centrifugal force pendulum device
WO2015192841A1 (de) * 2014-06-20 2015-12-23 Schaeffler Technologies AG & Co. KG Fliehkraftpendel
CN106471278A (zh) * 2014-06-20 2017-03-01 舍弗勒技术股份两合公司 离心力摆
CN106471278B (zh) * 2014-06-20 2019-07-05 舍弗勒技术股份两合公司 离心力摆
WO2019001851A1 (de) * 2017-06-30 2019-01-03 Zf Friedrichshafen Ag Geschmiertes tilgersystem
CN110832222A (zh) * 2017-06-30 2020-02-21 Zf腓特烈斯哈芬股份公司 经润滑的缓冲系统
KR20200024853A (ko) * 2017-06-30 2020-03-09 젯트에프 프리드리히스하펜 아게 윤활식 업소버 시스템
US10844929B2 (en) 2017-06-30 2020-11-24 Zf Friedrichshafen Ag Lubricated absorber system
CN110832222B (zh) * 2017-06-30 2021-07-30 Zf腓特烈斯哈芬股份公司 经润滑的缓冲系统
KR102501193B1 (ko) 2017-06-30 2023-02-20 젯트에프 프리드리히스하펜 아게 윤활식 업소버 시스템

Also Published As

Publication number Publication date
AT149236B (de) 1937-04-10
BE412213A (xx)
DK53980C (da) 1937-12-06
CH187490A (fr) 1936-11-15

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