WO2021235022A1 - Dispositif de retenue de palier à rouleau à alignement automatique - Google Patents

Dispositif de retenue de palier à rouleau à alignement automatique Download PDF

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Publication number
WO2021235022A1
WO2021235022A1 PCT/JP2021/004438 JP2021004438W WO2021235022A1 WO 2021235022 A1 WO2021235022 A1 WO 2021235022A1 JP 2021004438 W JP2021004438 W JP 2021004438W WO 2021235022 A1 WO2021235022 A1 WO 2021235022A1
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WO
WIPO (PCT)
Prior art keywords
cage
self
aligning roller
row
single row
Prior art date
Application number
PCT/JP2021/004438
Other languages
English (en)
Japanese (ja)
Inventor
廣幸 前田
康樹 薮林
Original Assignee
中西金属工業株式会社
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 中西金属工業株式会社 filed Critical 中西金属工業株式会社
Publication of WO2021235022A1 publication Critical patent/WO2021235022A1/fr

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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
    • 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
    • F16C19/38—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 two or more rows of rollers
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings

Definitions

  • the present invention relates to a cage used for a self-aligning roller bearing.
  • Self-aligning roller bearings can carry radial loads and axial loads in both directions with a single bearing, and because they have a particularly large radial load capacity, they are suitable for places where heavy loads and impact loads are applied. It is used for the drive unit and axles of.
  • a cage using two cages for individually guiding the two rows of rollers for each row guides both of the two rows of rollers.
  • an integrated cage see, for example, Patent Document 2.
  • a cage for self-aligning roller bearings as in Patent Document 1 guides two rows of roller rows individually by two separate cages, so that when a load is applied to one of the roller rows, one of them is used.
  • the load may not be transmitted from one of the cages to the other cage and the other roller row and cage may not rotate.
  • bearing assembly workability is good without causing roller skew or fretting and shortening the bearing life, and holding for self-aligning roller bearings that can adopt not only roller guidance method but also raceway ring guidance method.
  • the purpose is to provide a vessel.
  • the gist of the present invention is as follows.
  • a cage used for self-aligning roller bearings having two rows of rollers It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • An uneven engagement portion having an engagement depth larger than the axial gap of the bearing is provided on the end face on the large diameter side, or A concave portion is provided on the large-diameter side end surface of one of the single-row cages, and a convex portion is provided on the large-diameter side end surface of the other single-row holder, so that the concave portion and the convex portion engage with each other.
  • the engagement depth of the portion is made larger than the axial gap of the bearing. It is characterized in that it is used in a state where the concave-convex engaging portions of the pair of single-row cages are engaged with each other, or in a state where the concave portions and the convex portions are engaged with each other. Cage for self-aligning roller bearings.
  • a cage used for self-aligning roller bearings having two rows of rollers It consists of a pair of single row cages that guide the two rows of rollers for each row.
  • the single row cage is The large-diameter ring portion and the small-diameter ring portion separated in the axial direction are connected by a plurality of pillar portions to form a shape.
  • the large-diameter side end face has a connecting body engaging portion having an engaging depth larger than the axial gap of the bearing. It is characterized in that it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages. Cage for self-aligning roller bearings.
  • the connecting body engaging portion is a fitting hole and has a fitting hole.
  • the connecting body is a shaft body that fits into the fitting hole.
  • the cage for self-aligning roller bearings according to [2].
  • the pair of single row cages has the same shape.
  • the cage for self-aligning roller bearings according to any one of [1] to [3].
  • the cage for self-aligning roller bearings comprises a pair of single row cages that guide two rows of roller rows for each row.
  • the single row cage has a concave-convex engaging portion having an engaging depth larger than the axial clearance of the self-aligning roller bearing on its large-diameter side end surface. Then, it is used in a state where the uneven engaging portions of the pair of single row cages are engaged with each other.
  • the pair of single-row cages are provided with a concave portion on the large-diameter side end surface of one of the single-row cages and a convex portion on the large-diameter side end surface of the other single-row cage.
  • the engagement depth of the concave-convex engaging portion with which the convex portion engages is made larger than the axial gap of the bearing. Then, it is used in a state where the concave portion and the convex portion are engaged with each other.
  • the single row cage has a coupling engaging portion having a larger engaging depth than the axial clearance of the self-aligning roller bearing on its large diameter side end face. Then, it is used in a state where the connecting body is engaged with the connecting body engaging portion of the pair of the single row cages. Therefore, in the cage for self-aligning roller bearings according to the present invention, the pair of the single row cages are integrated in the used state.
  • the cage for the self-aligning roller bearing according to the present invention is one of the single row cages when a load is applied to one of the roller rows.
  • the load is transmitted from to the other single row cage, and one roller row and the single row cage and the other roller row and the single row cage rotate together. Therefore, the cage for self-aligning roller bearings according to the present invention can equalize the rotation (revolution) of both roller rows.
  • the cage for self-aligning roller bearings according to the present invention has a problem in the configuration of Patent Document 1 in which two rows of rollers are guided by two separate cages, that is, roller skewing and fretting. There is no problem that the life of the bearing is shortened.
  • the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, it is necessary to insert the cage while elastically deforming the cage when assembling the self-aligning roller bearing. As there is no bearing, assembly workability is good.
  • the cage for the self-aligning roller bearing according to the present invention is composed of the pair of the single row cages, the cage can be incorporated into the inner ring from the axial direction even in the raceway ring guide type.
  • a raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of rollers as in Patent Document 2 can also be adopted.
  • FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages.
  • FIG. 5 is an enlarged expansion view of a main part showing an example in which one concave portion is provided in one single row cage and one convex portion is provided in the other single row cage in a pair of single row cages.
  • the direction of the rotation axis J (see FIGS. 4A and 14) of the self-aligning roller bearing 10 is "axial direction"
  • the direction orthogonal to the axis direction is “diametrical direction”
  • the direction away from the rotation axis J is “radial direction”.
  • the direction in which the rollers 13 are lined up in rows C1 or C2 is referred to as "circumferential direction”.
  • the self-aligning roller bearing cage 1A according to the embodiment of the present invention shown in the perspective view of FIG. 1 and the exploded perspective view of FIG. 2 has a perspective view of FIG. 3, a vertical sectional view of FIG. 4A, and FIG. 4B. As shown in the vertical cross-sectional perspective view of the above, it is a roller guide system and consists of a pair of single row cages 2A and 2B.
  • the single row cages 2A and 2B can be manufactured by stamping a steel plate, injection molding a synthetic resin, or shaving a metal or a synthetic resin.
  • the pair of single row cages 2A and 2B have, for example, the same shape, but may have different shapes. However, by making the pair of single row cages 2A and 2B the same shape, it is possible to reduce the manufacturing cost, the parts management cost, and the like.
  • the single-row cages 2A and 2B have a shape in which a large-diameter ring portion 3 and a small-diameter ring portion 4 separated in the axial direction are connected by a plurality of pillar portions 5.
  • a plurality of pocket holes P for accommodating spherical rollers 13 are formed at equal intervals in the circumferential direction.
  • the single row cages 2A and 2B have a concave-convex engaging portion A on the large-diameter side end surface 3A.
  • the side surface of the pillar portion 5 on the pocket hole P side is composed of a guide surface 6 which is a guide surface of the spherical roller 13, a retaining convex portion 7 which is a retaining convex portion 7 which prevents the spherical roller 13 from coming off in the outer diameter direction, and a recessed portion 8.
  • the concave portion 8 inward in the radial direction of the retaining convex portion 7 interferes with the spherical roller 13 (see, for example, FIGS. 3 and 4A) when the retaining convex portion 7 extends inward in the radial direction. It is provided to avoid interference with 13.
  • the self-aligning roller bearing 10 has two rows of roller rows C1 and C2 in the circumferential direction, and has an outer ring. It has a structure in which a barrel-shaped spherical roller 13 is incorporated as a rolling element between the 11 and the inner ring 12.
  • the track 11A of the outer ring 11 is a spherical surface
  • the track 12A of the inner ring 12 is a double row. Since the center of curvature of the track 11A of the outer ring 11 and the center of the bearing coincide with each other, the self-aligning roller bearing 10 has self-alignment property with respect to the inclination of the shaft.
  • the single row cage 2A of the cage 1A guides the roller row C1
  • the single row cage 2B of the cage 1A guides the roller row C2.
  • the cage 1A is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other.
  • the concave-convex engaging portion A has, for example, a rectangular wavy shape as shown in (a) and a substantially rectangular wavy shape obtained by chamfering the corners of the rectangular convex portion as shown in (b). It has a trapezoidal wavy shape such as c), a sine wavy shape such as (d), a rounded rectangular wavy shape such as (e), and has a repeating shape in the circumferential direction.
  • the engagement depth D shown in FIG. 5 is from the axial gap of the self-aligning roller bearing 10 in order to reliably engage the uneven engagement portions A of the pair of single row cages 2A and 2B in the used state. Also needs to be large.
  • the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B may have the same shape or different shapes. However, if the concave-convex engaging portion A of the single-row cage 2A and the concave-convex engaging portion A of the single-row cage 2B have the same shape, and the pair of single-row cages 2A and 2B have the same shape, the above-mentioned As you can see, manufacturing costs, parts management costs, etc. can be reduced.
  • the roller rows C1 and C2 in a state where the concave-convex engaging portions A of the single row cages 2A and 2B are engaged with each other may be out of phase as shown in the enlarged expansion view of the main part of FIG. 6A.
  • the phases may be the same as shown in the enlarged development view of the main part.
  • the period of the repeating shape in the circumferential direction of the uneven engagement portion A is shorter than the period of the pocket hole P, and the uneven engagement portion A having the same shape has the same shape. It is also easy to make it possible to change the form in which the phases are different as shown in FIG. 7A and the form in which the phases are the same as shown in FIG. 7B.
  • the uneven engagement portion A is not limited to the repeating shape in the circumferential direction. That is, it is not always necessary to provide both unevenness on each of the pair of single row cages 2A and 2B.
  • one of the pair of single row cages 2A and 2B may be provided with a concave portion and the other may be provided with a convex portion to form the concave-convex engaging portion A.
  • the pair of single row cages 2A and 2B have a concave portion on the large diameter side end surface 3A of one single row cage and a convex portion on the large diameter side end surface 3A of the other single row cage. ..
  • one recess A1 is provided on the large diameter side end surface of one single row cage 2A, and the other single row cage 2B is provided.
  • An example is shown in which one convex portion A2 is provided on the end surface on the large diameter side to form the concave-convex engaging portion A.
  • the single row cage 2A may be provided with only two or more concave portions A1 and the single row cage 2B may be provided with only two or more convex portions A2.
  • the enlarged expansion view of the main part of the partial vertical cross section of FIG. 9 shows an example in which the concave-convex engaging portion A or the connecting body engaging portion B and the connecting body C are provided in place of the concave-convex engaging portion A or the concave portion A1 and the convex portion A2.
  • the partial cross-sectional perspective view of FIG. 10 shows one single row cage 2B and its connecting body engaging portion B.
  • a fitting hole 3B which is a coupling body engaging portion B, is formed on the large-diameter side end surface 3A of the single-row cage 2A, and a coupling body engagement is formed on the large-diameter side end surface 3A of the single-row cage 2B.
  • a fitting hole 3C which is a portion B, is formed.
  • the fitting holes 3B and 3C are provided so as to face each other on, for example, a plurality of pillar portions 5. Fitting holes 3B and 3C may be provided on all the pillars 5.
  • the shaft body 9 which is the connecting body C is fitted into the fitting holes 3B and 3C.
  • the engagement depths E1 and E2 of the portion where the coupling body C is engaged with the coupling body engaging portion B are automatically adjusted in order to reliably integrate the pair of single row cages 2A and 2B in the used state. It is necessary to make it larger than the axial clearance of the core roller bearing 10.
  • the connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B may have the same shape or different shapes. However, if the connecting body engaging portion B of the single row cage 2A and the connecting body engaging portion B of the single row cage 2B have the same shape, and the pair of single row cages 2A and 2B have the same shape, Manufacturing costs, parts management costs, etc. can be reduced.
  • the self-aligning roller bearing cage 1B according to the embodiment of the present invention shown in the perspective view of FIG. 11 and the exploded perspective view of FIG. 12 is as shown in the perspective view of FIG. 13 and the vertical sectional view of FIG. It is a raceway ring guidance system and consists of a pair of single row cages 2A and 2B.
  • the inner diameter portion 4A of the small diameter ring portions 4 of the single row cages 2A and 2B is in sliding contact with the outer peripheral surface of the inner ring 12 to serve as an inner ring guide.
  • the concave-convex engaging portion A or the concave portion A1 and the convex portion A2 are replaced as shown in the enlarged expansion view of the main part of the partial vertical cross section of FIG.
  • the coupling body engaging portion B and the coupling body C may be provided.
  • the cages 1A and 1B for self-aligning roller bearings include a pair of single row cages 2A and 2B that guide the two rows of roller rows C1 and C2 for each row.
  • the single row cages 2A and 2B have a concave-convex engaging portion A having an engaging depth D larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the concave-convex engaging portions A of the pair of single-row cages 2A and 2B are engaged with each other (FIGS. 3 and 13).
  • the pair of single-row cages 2A and 2B are provided with a recess A1 on the large-diameter side end surface 3A of one single-row cage 2A, and a convex portion A1 on the large-diameter side end surface 3A of the other single-row cage 2B.
  • the engagement depth D of the concave-convex engaging portion A with which the concave portion A1 and the convex portion A2 are engaged is made larger than the axial gap of the self-aligning roller bearing 10. Then, it is used in a state where the concave portion A1 and the convex portion A2 are engaged (FIG. 8).
  • the single row cages 2A and 2B have a connecting body engaging portion B having an engaging depth E1 and E2 larger than the axial clearance of the self-aligning roller bearing 10 on its large-diameter side end surface 3A. Then, it is used in a state where the connecting body C is engaged with the connecting body engaging portion B of the pair of single row cages 2A and 2B (FIG. 9). Therefore, in the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention, the pair of single row cages 2A and 2B are integrated in the used state.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are loaded on one of the roller rows C1. At that time, the load is transmitted from one single row cage 2A to the other single row cage 2B, and one roller row C1 and the single row cage 2A and the other roller row C2 and the single row cage 2B are integrated. And rotate. Therefore, the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention can equalize the rotation (revolution) of both roller rows C1 and C2.
  • the cages 1A and 1B for self-aligning roller bearings according to the embodiment of the present invention are in the configuration of Patent Document 1 in which the two rows of roller rows C1 and C2 are guided by two separate cages. There is no problem, that is, the problem that the life of the bearing is shortened due to the skewing and fretting of the rollers.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are held when the self-aligning roller bearing 10 is assembled. Assembling workability is good because it is not necessary to insert the vessels 1A and 1B while elastically deforming them.
  • the self-aligning roller bearing cages 1A and 1B according to the embodiment of the present invention are composed of a pair of single row cages 2A and 2B, they are in the raceway ring guide format as shown in FIGS. 13 and 14. Even if there is, since the cages 1A and 1B can be incorporated into the inner ring 12 from the axial direction, there is also a raceway ring guide type that cannot be adopted by an integrated cage that guides both two rows of roller rows as in Patent Document 2. Can be adopted.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Support Of The Bearing (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un dispositif de retenue de palier à rouleaux à alignement automatique avec lequel le palier est exempt de désalignement ou de frottement de rouleaux réduisant sa durée de vie et est excellent en termes d'aptitude à l'assemblage, et peut adopter un type de guide de bague de palier ainsi qu'un type de guidage de rouleau. La solution selon l'invention porte sur un dispositif de retenue 1A qui est utilisé dans un palier à rouleaux à alignement automatique avec deux rangées de rouleaux. Le dispositif de retenue comprend une paire de dispositifs de retenue à rangée unique 2A, 2B qui guident respectivement les deux rangées de rouleaux. Les dispositifs de retenue à rangée unique 2A, 2B ont chacun une forme dans laquelle une bague de grand diamètre 3 et une bague de petit diamètre 4 sont séparées l'une de l'autre dans la direction axiale et sont reliées par l'intermédiaire d'une pluralité de piliers 5. Une surface d'extrémité côté grand diamètre 3A a une section de mise en prise ondulée A avec une profondeur de mise en prise supérieure à l'espace axial du palier. Les sections de mise en prise ondulées A de la paire de dispositifs de retenue à rangée unique 2A, 2B sont en prise l'une avec l'autre lors de l'utilisation.
PCT/JP2021/004438 2020-05-18 2021-02-05 Dispositif de retenue de palier à rouleau à alignement automatique WO2021235022A1 (fr)

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Application Number Priority Date Filing Date Title
JP2020086474A JP2021181792A (ja) 2020-05-18 2020-05-18 自動調心ころ軸受用保持器
JP2020-086474 2020-05-18

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6752038U (de) * 1968-05-17 1969-09-03 Schaeffler Ohg Industriewerk Radial-axiallager
US3712692A (en) * 1971-01-18 1973-01-23 Textron Inc Welded retainer for an antifriction bearing
JPS53118947U (fr) * 1977-01-21 1978-09-21
JP2001140875A (ja) * 1999-11-12 2001-05-22 Ntn Corp 自動調心ころ軸受
JP2007225034A (ja) * 2006-02-23 2007-09-06 Nsk Ltd 転がり軸受
FR2938027A1 (fr) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage sous primitif pour une double rangee de rouleaux d'un roulement a rotule, et roulement associe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6752038U (de) * 1968-05-17 1969-09-03 Schaeffler Ohg Industriewerk Radial-axiallager
US3712692A (en) * 1971-01-18 1973-01-23 Textron Inc Welded retainer for an antifriction bearing
JPS53118947U (fr) * 1977-01-21 1978-09-21
JP2001140875A (ja) * 1999-11-12 2001-05-22 Ntn Corp 自動調心ころ軸受
JP2007225034A (ja) * 2006-02-23 2007-09-06 Nsk Ltd 転がり軸受
FR2938027A1 (fr) * 2008-10-30 2010-05-07 Roulements Soc Nouvelle Cage sous primitif pour une double rangee de rouleaux d'un roulement a rotule, et roulement associe

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