GB2192952A - Bearing assembly for a wheel - Google Patents

Bearing assembly for a wheel Download PDF

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Publication number
GB2192952A
GB2192952A GB8713773A GB8713773A GB2192952A GB 2192952 A GB2192952 A GB 2192952A GB 8713773 A GB8713773 A GB 8713773A GB 8713773 A GB8713773 A GB 8713773A GB 2192952 A GB2192952 A GB 2192952A
Authority
GB
United Kingdom
Prior art keywords
drum
reduction
bearing
elements
reduction element
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.)
Granted
Application number
GB8713773A
Other versions
GB2192952B (en
GB8713773D0 (en
Inventor
Giovanni Zinzani
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.)
BONFIGLIOLI TRASMITAL SpA
Original Assignee
BONFIGLIOLI TRASMITAL SpA
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 BONFIGLIOLI TRASMITAL SpA filed Critical BONFIGLIOLI TRASMITAL SpA
Publication of GB8713773D0 publication Critical patent/GB8713773D0/en
Publication of GB2192952A publication Critical patent/GB2192952A/en
Application granted granted Critical
Publication of GB2192952B publication Critical patent/GB2192952B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/37—Loose spacing bodies
    • F16C33/3706—Loose spacing bodies with concave surfaces conforming to the shape of the rolling elements, e.g. the spacing bodies are in sliding contact with the rolling elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0005—Hubs with ball bearings
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/185—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/20—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows with loose spacing bodies, e.g. balls, between the bearing balls
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Friction Gearing (AREA)

Abstract

It is characterised in that it comprises at least one ring of balls 10 held between a plurality of spacers 11, the said balls being arranged between an inner annulus 12a, 12b mounted on a fixed body 5 of the reduction gear 1 and a drum 6 to which the movement is transmitted by the said reduction gear 1, the internal surface of the said drum 6 having the outer raceway of the said balls. Application in particular to reduction gears provided for actuating drive wheels for caterpillar tracks. <IMAGE>

Description

SPECIFICATION Integrated bearing for reduction elements The present invention relates to an integrated bearing for reduction elements in particular of driving wheels for tracks, pneumatic- or rollertired wheels and the like.
As is known, reduction elements intended to transmit motion from a driving element to the drum whereon the driven wheel is flanged entail the use of a rolling bearing interposed between the fixed hub, rigidly associated with the driving element, and the drum.
Such reduction elements generally have remarkable dimensions, since the driven drum should accomodate the reduction gearing elements, as well as suitable brake elements.
This fact is often in contrast with manufacture requirements.
The aim of the present invention is to solve the above problem by providing a bearing integrated in the reduction element so as to allow a significant reduction of the overall dimensions.
A further object of the invention is to provide a bearing of simple structure, safe and reliable in use, as well as relatively economical.
This aim and this object are achieved, according to the invention, by the present integrated bearing for reduction elements, characterized by at least one ball ring interposed between an inner raceway carried on a fixed body of the reduction element and an outer raceway formed on the inner surface of a drum rotatively connected to said reduction element, said balls being retained between a plurality of spacers interposed therebetween.
The features of the invention will become apparent from the detailed description of a preferred embodiment of the integrated bearing for reduction elements, illustrated only by way of non-limitative example in the accompanying drawing, where: Figure 1 is a longitudinal cross section view of a reduction element mounting the bearing according to the invention: and Figure 2 is a detail view of a ball ring portion of this bearing.
With reference to the drawings figures, 1 indicates generally a reduction element integrating the bearing according to the invention.
The reduction element 1 comprises a tubular body 2 accomodating a hydraulic driving element 4, flanged at one end of the tubular body by screw means 3.
The tubular body 2 defines a cylindrical portion 5 which rotatably supports a drum 6 intended for connection with the driven wheel; to this end the drum 6 defines a coupling flange 6a. The drum 6 is provided, on its inner surface, with a teeth formation 7 which is part of an epicyclic train, of a substantially per Se known type, and therefore not illustrated in detail. Of this gear, which is operated by the shaft of the driving element 4 passing through the tubular body 2, Fig. 1 illustrates a satellite wheel 8 which engages with the teeth formation 7 and is rotatably carried by a tubular support 9 frontally attached to the cylinder 5.
Between the cylinder 5 and the drum 6, a rolling bearing is interposed, formed by a double ring of balls 10.
The balls 10 are separated from one another by related spacer elements 11 suitably countershaped thereto (Fig. 2) and are arranged between a pair of inner raceways 12a, 1 2b mounted on the cylinder 5, and the inner surface of the drum.
The raceways 12, 1 2b and the inner surface of the drum define ball races which are symmetrically oblique with respect to the rotation axis of the reduction element, so as to aliow bearing of the radial and axial loads transmitted by the wheel of the fixed structure. The two ball rings are moreover separated by an annular spacer 13 mounted on the drum 6.
The drum 6 is frontally closed by a cover 14, while at the opposite end a crown 15 is provided, rigidly connected to the body 2 and defining an annular lip 15a forming a sort of labyrinth seal with respect to the drum edge.
The hermetic seal of the inner chamber of the drum is achieved by means of a pair of rings 16a, 16b peripherally provided with respective annular gaskets 17 thereby respectively forming a seal on the inner surfaces of crown 15 and drum 6.
It should be noted that both the cross section of the rings 16a, 16b and the respective resting surfaces are provided with countershaped tapers, so as to give rise to a locking axial thrust which ensures the seal.
Thus, the described bearing, besides being cheap to be manufactured, has a low outer to inner diameter ratio, particularly by virtue of the fact that the ball rings have their outer races provided directly in the drum body. This allows, for example, to accommodate the driving motor as well as suitable braking elements inside the reduction element, with little bulk.
In the practical embodiment of the invention, the materials employed, the shape and the dimensions may be any according to the requirements.
1. An integrated bearing for reduction elements, characterized by at least one ball ring interposed between an inner raceway carried on a fixed body of the reduction element and an outer raceway formed on the inner surface of a drum rotatively connected to said reduction element, said balls being retained between a plurality of spacers interposed therebetween.
2. A bearing according to claim 1, charac
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Integrated bearing for reduction elements The present invention relates to an integrated bearing for reduction elements in particular of driving wheels for tracks, pneumatic- or rollertired wheels and the like. As is known, reduction elements intended to transmit motion from a driving element to the drum whereon the driven wheel is flanged entail the use of a rolling bearing interposed between the fixed hub, rigidly associated with the driving element, and the drum. Such reduction elements generally have remarkable dimensions, since the driven drum should accomodate the reduction gearing elements, as well as suitable brake elements. This fact is often in contrast with manufacture requirements. The aim of the present invention is to solve the above problem by providing a bearing integrated in the reduction element so as to allow a significant reduction of the overall dimensions. A further object of the invention is to provide a bearing of simple structure, safe and reliable in use, as well as relatively economical. This aim and this object are achieved, according to the invention, by the present integrated bearing for reduction elements, characterized by at least one ball ring interposed between an inner raceway carried on a fixed body of the reduction element and an outer raceway formed on the inner surface of a drum rotatively connected to said reduction element, said balls being retained between a plurality of spacers interposed therebetween. The features of the invention will become apparent from the detailed description of a preferred embodiment of the integrated bearing for reduction elements, illustrated only by way of non-limitative example in the accompanying drawing, where: Figure 1 is a longitudinal cross section view of a reduction element mounting the bearing according to the invention: and Figure 2 is a detail view of a ball ring portion of this bearing. With reference to the drawings figures, 1 indicates generally a reduction element integrating the bearing according to the invention. The reduction element 1 comprises a tubular body 2 accomodating a hydraulic driving element 4, flanged at one end of the tubular body by screw means 3. The tubular body 2 defines a cylindrical portion 5 which rotatably supports a drum 6 intended for connection with the driven wheel; to this end the drum 6 defines a coupling flange 6a. The drum 6 is provided, on its inner surface, with a teeth formation 7 which is part of an epicyclic train, of a substantially per Se known type, and therefore not illustrated in detail. Of this gear, which is operated by the shaft of the driving element 4 passing through the tubular body 2, Fig. 1 illustrates a satellite wheel 8 which engages with the teeth formation 7 and is rotatably carried by a tubular support 9 frontally attached to the cylinder 5. Between the cylinder 5 and the drum 6, a rolling bearing is interposed, formed by a double ring of balls 10. The balls 10 are separated from one another by related spacer elements 11 suitably countershaped thereto (Fig. 2) and are arranged between a pair of inner raceways 12a, 1 2b mounted on the cylinder 5, and the inner surface of the drum. The raceways 12, 1 2b and the inner surface of the drum define ball races which are symmetrically oblique with respect to the rotation axis of the reduction element, so as to aliow bearing of the radial and axial loads transmitted by the wheel of the fixed structure. The two ball rings are moreover separated by an annular spacer 13 mounted on the drum 6. The drum 6 is frontally closed by a cover 14, while at the opposite end a crown 15 is provided, rigidly connected to the body 2 and defining an annular lip 15a forming a sort of labyrinth seal with respect to the drum edge. The hermetic seal of the inner chamber of the drum is achieved by means of a pair of rings 16a, 16b peripherally provided with respective annular gaskets 17 thereby respectively forming a seal on the inner surfaces of crown 15 and drum 6. It should be noted that both the cross section of the rings 16a, 16b and the respective resting surfaces are provided with countershaped tapers, so as to give rise to a locking axial thrust which ensures the seal. Thus, the described bearing, besides being cheap to be manufactured, has a low outer to inner diameter ratio, particularly by virtue of the fact that the ball rings have their outer races provided directly in the drum body. This allows, for example, to accommodate the driving motor as well as suitable braking elements inside the reduction element, with little bulk. In the practical embodiment of the invention, the materials employed, the shape and the dimensions may be any according to the requirements. CLAIMS
1. An integrated bearing for reduction elements, characterized by at least one ball ring interposed between an inner raceway carried on a fixed body of the reduction element and an outer raceway formed on the inner surface of a drum rotatively connected to said reduction element, said balls being retained between a plurality of spacers interposed therebetween.
2. A bearing according to claim 1, charac terized by two ball rings mounted between a respective inner raceway mounted on said fixed body of the reduction element and corresponding outer raceways formed on said inner surface of said drum, said raceways being symmetrically oblique shaped with respect to the rotation axis of said reduction element and supporting radial and axial loads transmitted to said fixed body.
3. A bearing according to claim 1, characterized in that said spacers comprise elements countershaped to said balls.
4. An integrated bearing for reduction elements, substantially as herein described with reference to the accompanying drawings.
GB8713773A 1986-06-13 1987-06-12 Integrated bearing for reduction elements Expired - Fee Related GB2192952B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT490686U IT210935Z2 (en) 1986-06-13 1986-06-13 INTEGRATED BEARING FOR REDUCING ORGANS

Publications (3)

Publication Number Publication Date
GB8713773D0 GB8713773D0 (en) 1987-07-15
GB2192952A true GB2192952A (en) 1988-01-27
GB2192952B GB2192952B (en) 1990-10-24

Family

ID=11115849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8713773A Expired - Fee Related GB2192952B (en) 1986-06-13 1987-06-12 Integrated bearing for reduction elements

Country Status (5)

Country Link
DE (1) DE8707935U1 (en)
ES (1) ES1002739Y (en)
FR (1) FR2600130B3 (en)
GB (1) GB2192952B (en)
IT (1) IT210935Z2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718500A1 (en) * 1994-04-12 1995-10-13 Roulements Soc Nouvelle Bearing fitted with a mechanical seal.
GB2321088A (en) * 1997-01-10 1998-07-15 Taylor Precision Plastics Limi Bearing with ball spacers
CN102182753A (en) * 2011-05-30 2011-09-14 襄樊振本传动设备有限公司 Precision rotating support
EP2657555A3 (en) * 2012-04-27 2015-03-04 Roller Bearing Company of America, Inc. High-capacity light-weight ball bearing for airborne vibration suppression

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201597A (en) * 1922-04-03 1923-08-03 Herbert Charles Macleod Steven Improvements in antifriction bearings
GB740703A (en) * 1952-11-14 1955-11-16 Rolls Royce Improvements in or relating to bearings
GB829162A (en) * 1958-01-31 1960-02-24 Sperry Gyroscope Co Ltd Ball bearing
GB845833A (en) * 1958-02-13 1960-08-24 Thew Shovel Co Improvements in or relating to spacers for ball bearings
GB963023A (en) * 1960-06-02 1964-07-08 Thew Shovel Co Turntable ball bearing for power cranes, shovels, hoes and the like
EP0164968A1 (en) * 1984-06-01 1985-12-18 Dresser Industries,Inc. High speed lubricated bearing unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201597A (en) * 1922-04-03 1923-08-03 Herbert Charles Macleod Steven Improvements in antifriction bearings
GB740703A (en) * 1952-11-14 1955-11-16 Rolls Royce Improvements in or relating to bearings
GB829162A (en) * 1958-01-31 1960-02-24 Sperry Gyroscope Co Ltd Ball bearing
GB845833A (en) * 1958-02-13 1960-08-24 Thew Shovel Co Improvements in or relating to spacers for ball bearings
GB963023A (en) * 1960-06-02 1964-07-08 Thew Shovel Co Turntable ball bearing for power cranes, shovels, hoes and the like
EP0164968A1 (en) * 1984-06-01 1985-12-18 Dresser Industries,Inc. High speed lubricated bearing unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718500A1 (en) * 1994-04-12 1995-10-13 Roulements Soc Nouvelle Bearing fitted with a mechanical seal.
EP0677673A1 (en) * 1994-04-12 1995-10-18 Snr Roulements Rolling bearing equipped with a mechanical seal
GB2321088A (en) * 1997-01-10 1998-07-15 Taylor Precision Plastics Limi Bearing with ball spacers
CN102182753A (en) * 2011-05-30 2011-09-14 襄樊振本传动设备有限公司 Precision rotating support
EP2657555A3 (en) * 2012-04-27 2015-03-04 Roller Bearing Company of America, Inc. High-capacity light-weight ball bearing for airborne vibration suppression

Also Published As

Publication number Publication date
DE8707935U1 (en) 1988-01-21
ES1002739Y (en) 1989-02-01
IT210935Z2 (en) 1989-01-11
FR2600130A3 (en) 1987-12-18
GB2192952B (en) 1990-10-24
FR2600130B3 (en) 1988-07-01
ES1002739U (en) 1988-06-16
IT8604906V0 (en) 1986-06-13
GB8713773D0 (en) 1987-07-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010612