WO2004104432A1 - Vibration damping device for bearings - Google Patents

Vibration damping device for bearings Download PDF

Info

Publication number
WO2004104432A1
WO2004104432A1 PCT/SE2004/000610 SE2004000610W WO2004104432A1 WO 2004104432 A1 WO2004104432 A1 WO 2004104432A1 SE 2004000610 W SE2004000610 W SE 2004000610W WO 2004104432 A1 WO2004104432 A1 WO 2004104432A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
solid body
bearing seat
shaft
ring
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.)
Ceased
Application number
PCT/SE2004/000610
Other languages
French (fr)
Inventor
Kenneth Hagberg
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of WO2004104432A1 publication Critical patent/WO2004104432A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
    • 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
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1028—Vibration-dampers; Shock-absorbers using inertia effect the inertia-producing means being a constituent part of the system which is to be damped

Definitions

  • the present invention relates to a vibration damping device for a bearing arranged between a rotating shaft and a bearing seat, to a bearing device which comprises an outer bearing ring, a bearing seat retaining the bearing ring in a radial position and fixing means for retaining the bearing ring in an axial position, and to a method for interruption of undesirable vibration transmission from a rotating shaft to a bearing seat via a bearing device supporting the shaft.
  • the idea of the invention is to try to cancel out the vibrations which occur by imparting oscillations in counterphase to them.
  • One object of the present invention is to improve the possibility of dealing with vibrations which are propagated from a rotating shaft to a machine body via a bearing. According to invention, this object is achieved by what is indicated by the characterising part of claim 1. Other advantageous embodiments are indicated by the characterising parts of claims 2-10.
  • FIG. 1 depicts in axial section a bearing device with a vibration damping device according to the invention.
  • a vibration damping device 1 for a bearing 2 arranged between a rotating shaft 3 and a bearing seat 4 comprises a solid body 1 which may take a wide variety of forms within the scope of the invention.
  • the solid body 1 is arranged on or closely adjacent to a radial outer side of an outer bearing ring 5 which forms part of the bearing 2.
  • the outer bearing ring 5 is clamped in and radially fixed by the bearing seat.
  • a fixing means 7 on at least one side of the outer bearing ring 5 fixes the latter axially.
  • the bearing also has an inner bearing ring 9 which is fixed axially to the shaft 3 by a fixing means 8.
  • the solid body 1 is arranged in a recess 6 in the inner surface of the bearing seat 4 which is deeper than the thickness t of the solid body 1.
  • the solid body 1 is a ring and the recess 6 is annular and arranged along an inner periphery of the bearing seat 4.
  • the ring is loosely tensioned round the shaft 3 and its fitting is preferably facilitated by its being provided with a slit aperture.
  • the solid body 1 may be homogeneous but may also exhibit along its circumference physical differences such as regions of different width, thickness, material or density or a combination of one or more of these characteristics.
  • the parameters are used for adapting the characteristics of the solid body 1 in order to achieve the oscillatory characteristics appropriate in the relevant vibration situation for cancelling out undesirable vibrations in the structure of the bearing. Physical differences may be provided regularly along the circumference or irregularly depending on the prevailing vibration situation.
  • the density of the material of the solid body 1 may correspond to or be greater than that of steel.
  • the tensioning of the solid body 1 round the outer bearing ring 5 may be adapted in order to achieve the oscillatory characteristics appropriate in the relevant vibration situation for cancelling out undesirable vibrations in the structure of the bearing.
  • two or more solid bodies may be arranged along, and be suitably applied to, the radial outer side of the outer bearing ring 5. They may be of similar configuration or exhibit mutually different characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics. Such a solid body 1 may instead exhibit along its extent along the periphery of the outer bearing ring 5 varying characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics.
  • two or more annular solid bodies may be arranged each parallel in its respective recess in the bearing seat 4. In such cases these solid bodies may present similar or dissimilar characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics.
  • annular solid body may of course be replaced by two or more separate solid bodies arranged along, and be suitable applied to, the radial outer side of the outer bearing ring 5. If the fastening of the outer bearing ring 5 to the bearing seat 4 is such that the bearing ring 5 partly protrudes from the bearing seat 4, the solid body or bodies may be arranged on such a portion of the bearing ring 5, in which case the solid body may for example abut against a surface of the bearing seat which is perpendicular to the shaft 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The present invention relates to a vibration damping device for a bearing (2) arranged between a rotating shaft (3) and a bearing seat (4). The device comprises at least one solid body (1) which is arranged on or closely adjacent to an outer side of an outer bearing ring (5) forming part of the bearing (2) and which is so designed as to eliminate all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation. The invention also relates to a bearing device with such a vibration damping device, and methods for interruption of undesirable vibration transmission from a rotating shaft (3) to a bearing seat (4) via a bearing device supporting a shaft (2) by adaptation of the characteristics of the solid body (1). The present invention improves the possibility of dealing with vibrations which are propagated from a rotating shaft (3) to a machine body via a bearing (2).

Description

Vibration damping device for bearings Background to the invention The present invention relates to a vibration damping device for a bearing arranged between a rotating shaft and a bearing seat, to a bearing device which comprises an outer bearing ring, a bearing seat retaining the bearing ring in a radial position and fixing means for retaining the bearing ring in an axial position, and to a method for interruption of undesirable vibration transmission from a rotating shaft to a bearing seat via a bearing device supporting the shaft.
In the use of bearings to support rotating shafts in various contexts, the occurrence in the shaft of vibrations resulting from imbalance is virtually unavoidable. Such vibrations cause undesirable noise nuisance problems.
The propagation of such vibrations can to some extent be prevented by using for the fastening of the bearing in a bearing seat a softer material to eliminate the natural frequencies of the structure. In most applications, such an arrangement cannot be used because it does not cope with the loads which occur. Another possibility is to use a stronger and more rigid material which copes with even heavy loads. In most cases this means materials such as titanium etc., which are ruled out for cost reasons in most industrial contexts, e.g. the vehicle industry.
Instead of preventing the amplification of natural frequencies of the structure as described above, the idea of the invention is to try to cancel out the vibrations which occur by imparting oscillations in counterphase to them.
Summary of the invention One object of the present invention is to improve the possibility of dealing with vibrations which are propagated from a rotating shaft to a machine body via a bearing. According to invention, this object is achieved by what is indicated by the characterising part of claim 1. Other advantageous embodiments are indicated by the characterising parts of claims 2-10.
Description of the drawing Fig. 1 depicts in axial section a bearing device with a vibration damping device according to the invention.
The present invention is described below with reference to special embodiments without being not limited to them, but only being limited by the claims. Detailed description of the invention A vibration damping device 1 for a bearing 2 arranged between a rotating shaft 3 and a bearing seat 4 comprises a solid body 1 which may take a wide variety of forms within the scope of the invention. The solid body 1 is arranged on or closely adjacent to a radial outer side of an outer bearing ring 5 which forms part of the bearing 2. The outer bearing ring 5 is clamped in and radially fixed by the bearing seat. A fixing means 7 on at least one side of the outer bearing ring 5 fixes the latter axially. The bearing also has an inner bearing ring 9 which is fixed axially to the shaft 3 by a fixing means 8. In a particularly preferred embodiment depicted in Fig. 1, the solid body 1 is arranged in a recess 6 in the inner surface of the bearing seat 4 which is deeper than the thickness t of the solid body 1. The solid body 1 is a ring and the recess 6 is annular and arranged along an inner periphery of the bearing seat 4. The ring is loosely tensioned round the shaft 3 and its fitting is preferably facilitated by its being provided with a slit aperture. The solid body 1 may be homogeneous but may also exhibit along its circumference physical differences such as regions of different width, thickness, material or density or a combination of one or more of these characteristics. These parameters are used for adapting the characteristics of the solid body 1 in order to achieve the oscillatory characteristics appropriate in the relevant vibration situation for cancelling out undesirable vibrations in the structure of the bearing. Physical differences may be provided regularly along the circumference or irregularly depending on the prevailing vibration situation. The density of the material of the solid body 1 may correspond to or be greater than that of steel.
In addition, the tensioning of the solid body 1 round the outer bearing ring 5 may be adapted in order to achieve the oscillatory characteristics appropriate in the relevant vibration situation for cancelling out undesirable vibrations in the structure of the bearing.
Instead of one annular solid body 1, two or more solid bodies may be arranged along, and be suitably applied to, the radial outer side of the outer bearing ring 5. They may be of similar configuration or exhibit mutually different characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics. Such a solid body 1 may instead exhibit along its extent along the periphery of the outer bearing ring 5 varying characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics. Alternatively, two or more annular solid bodies may be arranged each parallel in its respective recess in the bearing seat 4. In such cases these solid bodies may present similar or dissimilar characteristics as regards width, thickness, material or density or a combination of one or more of these characteristics. In accordance with the foregoing paragraph, such an annular solid body may of course be replaced by two or more separate solid bodies arranged along, and be suitable applied to, the radial outer side of the outer bearing ring 5. If the fastening of the outer bearing ring 5 to the bearing seat 4 is such that the bearing ring 5 partly protrudes from the bearing seat 4, the solid body or bodies may be arranged on such a portion of the bearing ring 5, in which case the solid body may for example abut against a surface of the bearing seat which is perpendicular to the shaft 3.

Claims

Claims
1. A vibration damping device for a bearing (2) arranged between a rotating shaft (3) and a bearing seat (4), characterised in that it comprises at least one solid body (1) which is arranged on or closely adjacent to an outer side of an outer bearing ring (5) forming part of the bearing (2) and which is so designed as to cancel out all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation.
2. A vibration damping device according to claim 1, characterised in that the solid body (1) is arranged in a recess (6) in the inner surface of the bearing seat (4), which recess (6) is deeper than the thickness t of the solid body (1 ).
3. A vibration damping device according to claim 2, characterised in that the solid body (1) is a loosely tensioned ring running in the recess (6) which is annular and arranged along the inner periphery of the bearing seat (4).
4. A vibration damping device according any one of the foregoing claims, characterised in that the solid body (1) exhibits along the inner periphery of the bearing seat (4) regions of different width, thickness, material or density or a combination of any of these characteristics which are so adapted that the device cancels out all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation.
5. A bearing device which comprises an outer bearing ring (5), a bearing seat
(4) retaining the bearing ring (5) in a radial position and fixing means (7) for retaining the bearing ring (5) in an axial position, characterised in that it also comprises at least one solid body (1) arranged on or closely adjacent to the outer side of the outer bearing ring (5) and so designed as to cancel out all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation.
6. A bearing device according to claim 5, characterised in that the solid body (1) is arranged in a recess (6) in the inner surface of the bearing seat (4), which recess (6) is deeper than the thickness t of the solid body (1).
7. A bearing device according to claim 6, characterised in that the solid body (1) is a loosely tensioned ring arranged on the outer side of the outer bearing ring (5) and running in the recess (6) which is annular and arranged along the inner periphery of the bearing seat (4).
8. A bearing device according to any one of claims 5-7, characterised in that the solid body (1) exhibits along the inner periphery of the bearing seat (4) regions of different width, thickness, material or density or a combination of any of these characteristics which are so adapted that the device cancels out all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation.
9. A method for damping of undesirable vibration transmission from a rotating shaft (3) to a bearing seat (4) via a bearing device (2) supporting the shaft (3) according to any one of claims 5-8, characterised in that the solid body (1) is so designed that its width, thickness, material or density or a combination of any of these characteristics is/are such that all or some of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) are cancelled out.
10. A method for damping of undesirable vibration transmission from a rotating shaft (3) to a bearing seat (4) via a bearing device supporting the shaft (3) according to either of claims 7-8, characterised in that the tensioning of the solid body (1) on the outer side of the bearing ring (5) is such that some or all of the vibrations propagated from the shaft (3) to the bearing seat (4) via the bearing (2) during operation are cancelled out.
PCT/SE2004/000610 2003-05-20 2004-04-22 Vibration damping device for bearings Ceased WO2004104432A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0301464-4 2003-05-20
SE0301464A SE0301464L (en) 2003-05-20 2003-05-20 Vibration damping device for a bearing, bearing device and method for damping unwanted vibration transmission

Publications (1)

Publication Number Publication Date
WO2004104432A1 true WO2004104432A1 (en) 2004-12-02

Family

ID=20291351

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2004/000610 Ceased WO2004104432A1 (en) 2003-05-20 2004-04-22 Vibration damping device for bearings

Country Status (2)

Country Link
SE (1) SE0301464L (en)
WO (1) WO2004104432A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061296A1 (en) * 2001-02-01 2002-08-08 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Bearing assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061296A1 (en) * 2001-02-01 2002-08-08 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Bearing assembly

Also Published As

Publication number Publication date
SE524976C2 (en) 2004-11-02
SE0301464D0 (en) 2003-05-20
SE0301464L (en) 2004-11-02

Similar Documents

Publication Publication Date Title
JPS63254264A (en) Damping means for damping propagation of sound of cycle
US10941808B2 (en) Shaft bearing
US9702429B2 (en) Torsional vibration absorber
US20020157501A1 (en) Crankshaft damper
CA2710129A1 (en) Improved tuned mass damper for rotating shafts
US5044784A (en) Bearing isolator
US11560933B2 (en) Tuned mass-spring damper
US4033642A (en) Shaft mounting apparatus
US7635118B2 (en) Cylindrical dynamic damper
WO2004104432A1 (en) Vibration damping device for bearings
JPH0262442A (en) Dynamic damper
US20020176641A1 (en) Shaft bearing
JP2024068917A (en) Dynamic vibration absorber
JPH07139544A (en) Center bearing of propeller shaft
US20040045399A1 (en) Torsional vibration damper for a crankshaft
WO2021261037A1 (en) Cab mount
JP2007139041A (en) Dynamic damper
US20260109189A1 (en) Tunable mass damper
KR20240123453A (en) Dynamic damper manufactured with a minimum number of parts
JP2001180316A (en) Center bearing support
JP7329372B2 (en) dynamic damper
JP2018048666A (en) Dynamic damper
JP2013217402A (en) Vibration-proof bush
JP2511613Y2 (en) Center bearing support
JPH0729324U (en) Center bearing of propeller shaft

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase