CN110114586A - Thrust roller bearing and thrust roller bearing rail ring - Google Patents
Thrust roller bearing and thrust roller bearing rail ring Download PDFInfo
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- CN110114586A CN110114586A CN201780080556.8A CN201780080556A CN110114586A CN 110114586 A CN110114586 A CN 110114586A CN 201780080556 A CN201780080556 A CN 201780080556A CN 110114586 A CN110114586 A CN 110114586A
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- roller bearing
- thrust roller
- rail ring
- thrust
- bearing rail
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Abstract
Thrust roller bearing rail ring (10,20) includes orbital plane (11,21), and multiple first rollers (30) roll on orbital plane (11,21).Orbital plane (11,21) has the first full protrusion (12,22) contacted with the first roller (30).The shape of the first surface (12s, 22s) of the first full protrusion (12,22) in the radial section of thrust roller bearing rail ring (10,20) is the first single circular arc.Therefore, the heat generated due to can be reduced because of the first roller (30) relative to thrust roller bearing with rail ring (10,20) with respect to sliding.
Description
Technical field
The present invention relates to thrust roller bearing and thrust roller bearing rail rings.
Background technique
A kind of rotating part set on electric components such as the compressors of automobile transmission, torque-converters or air conditioner for automobile known
The thrust roller bearing (referring to patent document 1) divided.Thrust roller bearing is used to carry the thrust for being applied to above-mentioned rotating part
Lotus is supported.Thrust roller bearing documented by patent document 1 includes: rail ring, and above-mentioned rail ring is configured along rotor shaft direction；
Multiple rollers, multiple above-mentioned rollers roll in the orbital plane of rail ring；And retainer, above-mentioned retainer to multiple rollers into
Row is kept.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Laid-Open 2003-83333 bulletin
Summary of the invention
The technical problems to be solved by the invention
However, in thrust roller bearing disclosed in patent document 1, because of the circular velocity and rail ring of the rolling surface of roller
Orbital plane circular velocity between difference cause roller relative to rail ring slide.Since roller is slided relative to rail ring
And generate heat.The heat makes the orbital plane for the thrust roller bearing rail ring of roller rolls generate the removing of surface starting point.
The present invention makees in view of above-mentioned technical problem, and its purpose is to provide a kind of thrust roller bearing and thrust rollers
Bearing rail ring is configured to reduce the heat generated because roller is relative to rail ring sliding.
Technical scheme applied to solve the technical problem
Thrust roller bearing of the invention includes: the first thrust roller bearing rail ring；Second thrust roller bearing is used
Rail ring；And multiple first rollers, multiple above-mentioned first rollers are pushed away along the first thrust roller bearing rail ring and second
Power roller bearing rail ring it is arranged circumferentially in the first thrust roller bearing rail ring and the second thrust roller bearing rail
Between road circle.First thrust roller bearing rail ring and the second thrust roller bearing are respectively included with rail ring for the first rolling
The orbital plane that son rolls.The orbital plane of first thrust roller bearing rail ring and the second thrust roller bearing rail ring
At least one of orbital plane has the first full protrusion with the first roller contact.In the radial section of thrust roller bearing
The shape of the first surface of one full protrusion is first single circular arc.
Thrust roller bearing rail ring of the invention includes orbital plane, and multiple first rollers roll in above-mentioned orbital plane
It is dynamic.Orbital plane has the first full protrusion with the first roller contact.In the radial section of thrust roller bearing rail ring
The shape of the first surface of one full protrusion is first single circular arc.
Invention effect
Thrust roller bearing of the invention can be reduced that (first pushes away relative to thrust roller bearing rail ring because of the first roller
Power roller bearing rail ring, the second thrust roller bearing rail ring) sliding and generate heat.
Thrust roller bearing of the invention can be reduced with rail ring because the first roller is relative to thrust roller bearing track
The heat enclosing (the first thrust roller bearing rail ring, the second thrust roller bearing rail ring) sliding and generating.
Detailed description of the invention
Fig. 1 be embodiment 1 thrust roller bearing and the first thrust roller bearing rail ring and the second thrust rolling
The approximate stereogram of sub- bearing rail ring.
Fig. 2 is the schematic sectional view of the first thrust roller bearing rail ring of embodiment 1.
Fig. 3 is the schematic sectional view of the second thrust roller bearing rail ring of embodiment 1.
Fig. 4 is the outline enlarged cross-sectional view of the first roller of embodiment 1.
Fig. 5 is the thrust roller bearing and the first thrust roller bearing rail ring and the second thrust roller axis of embodiment 1
Hold the outline enlarged partial sectional view with rail ring.
Fig. 6 is the thrust roller bearing and the first thrust roller bearing rail ring and the second thrust roller axis of embodiment 1
Hold the outline enlarged partial sectional view with rail ring.
Fig. 7 is the relationship illustrated that between the revolving speed and specific temperature rise of the thrust roller bearing of embodiment and comparative example 1
The figure of chart.
Fig. 8 is the position and the position in the thrust roller bearing for illustrate that embodiment, the first roller the first rolling surface
Set the figure of the chart of the relationship between the calorific value of the per unit length at place.
Fig. 9 is the position and first in the thrust roller bearing for illustrate that embodiment, the first roller the first rolling surface
The figure of the relationship between contact face pressure between first rolling surface of roller and the orbital plane of the first thrust roller bearing rail ring
The figure of table.
Figure 10 be position in the thrust roller bearing for illustrate that comparative example 1, the first roller the first rolling surface with should
The figure of the chart of relationship between the calorific value of per unit length at position.
Figure 11 is position and in the thrust roller bearing for illustrate that comparative example 1, the first roller the first rolling surface
The relationship between contact face pressure between first rolling surface of one roller and the orbital plane of the first thrust roller bearing rail ring
The figure of chart.
Figure 12 is radius of curvature and central contact that illustrate that the thrust roller bearing of embodiment 1, the first full protrusion
The figure of the chart of relationship between pressure and EDGE CONTACT face pressure.
Figure 13 is the thrust roller bearing and the first thrust roller bearing rail ring and the second thrust roller axis of embodiment 2
Hold the outline enlarged partial sectional view with rail ring.
Figure 14 is that the thrust roller bearing of the variation of embodiment 2 and the first thrust roller bearing rail ring and second push away
The outline enlarged partial sectional view of power roller bearing rail ring.
Figure 15 is the thrust roller bearing and the first thrust roller bearing rail ring and the second thrust roller axis of embodiment 3
Hold the outline enlarged partial sectional view with rail ring.
Figure 16 is the outline enlarged cross-sectional view of the first roller of embodiment 3.
Figure 17 is the outline enlarged cross-sectional view of the second roller of embodiment 3.
Specific embodiment
Hereinafter, embodiments of the present invention will be described referring to attached drawing.In addition, in the following figures, to identical or phase
When part mark identical reference marks, do not repeat its explanation.
(embodiment 1)
(the first thrust is rolled with rail ring for thrust roller bearing 1 and thrust roller bearing referring to figs. 1 to Fig. 6 to embodiment 1
Sub- bearing rail ring 10, the second thrust roller bearing rail ring 20) it is illustrated.Thrust roller bearing 1 mainly includes the
One thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20 and multiple first rollers 30.Thrust roller
Bearing 1 can also further include the retainer 40 kept to the first roller 30.First thrust roller bearing is passed through with rail ring 10
It is rotated centered on shaft 8 relative to the second thrust roller bearing rail ring 20 by the first roller 30.In the present specification, interior
Side is defined as close to the side of shaft 8, and outside is defined as the side far from shaft 8.In the present specification, it is radially defined as and turns
The orthogonal direction of axis 8.
First thrust roller bearing rail ring 10 is cricoid board member.First thrust roller bearing has with rail ring 10
There is the first interarea 15 for the orbital plane 11 of the first roller 30 rolling and with 11 opposite side of orbital plane.
The orbital plane 11 of first thrust roller bearing rail ring 10 includes the first thrust roller bearing rail ring 10
The first surface 12s of first full protrusion 12.The orbital plane 11 of first thrust roller bearing rail ring 10 can also be wrapped further
Include the first exterior planar portion 13 and the first inner flat portion 14.It is flat the first outside can also to be equipped in the outside of the first full protrusion 12
Smooth portion 13.The first inner flat portion 14 can also be equipped in the inside of the first full protrusion 12.
First interarea 15 is also possible to flat.The first flat interarea 15 can make the first thrust roller bearing rail ring
10 are seamlessly installed on shell (not shown).Therefore, when thrust load is applied to thrust roller bearing 1, thrust roller axis
Thrust load can suitably be born by holding 1.
Second thrust roller bearing rail ring 20 is cricoid board member.Second thrust roller bearing has with rail ring 20
There is the second interarea 25 for the orbital plane 21 of the first roller 30 rolling and with 21 opposite side of orbital plane.
The orbital plane 21 of second thrust roller bearing rail ring 20 includes the second thrust roller bearing rail ring 20
The first surface 22s of first full protrusion 22.The orbital plane 21 of second thrust roller bearing rail ring 20 can also be wrapped further
Include the second exterior planar portion 23 and the second inner flat portion 24.It is flat the second outside can also to be equipped in the outside of the first full protrusion 22
Smooth portion 23.The second inner flat portion 24 can also be equipped in the inside of the first full protrusion 22.
Second interarea 25 is also possible to flat.The second flat interarea 25 can make the second thrust roller bearing rail ring
20 are seamlessly installed on shell (not shown).Therefore, when thrust load is applied to thrust roller bearing 1, thrust roller axis
Thrust load can suitably be born by holding 1.
In the present embodiment, the orbital plane 11 and the second thrust roller axis of the first thrust roller bearing rail ring 10
It holds and is respectively provided with the first full protrusion 22 with the orbital plane 21 of rail ring 20.It is also possible to the first thrust roller bearing rail ring 10
Orbital plane 11 and the second thrust roller bearing rail ring 20 orbital plane 21 at least one party have supply the first roller
First full protrusion 22 of 30 contacts.It can also only be pushed away in the orbital plane 11 of the first thrust roller bearing rail ring 10 and second
The first full protrusion is arranged in a side in the orbital plane 21 of power roller bearing rail ring 20, and in the first thrust roller bearing rail
Another party in the orbital plane 11 of road circle 10 and the orbital plane 21 of the second thrust roller bearing rail ring 20 is not provided with first
Full protrusion.In the present specification, full protrusion refers to the protuberance for being formed in orbital plane 11,21.In the present specification, full protrusion refers to
With the entire rolling surface (first of the roller (the first roller 30) in addition to the corner portion (corner portion 32) of roller (the first roller 30)
Rolling surface 31) opposite protrusion.
First full protrusion 12 of the first thrust roller bearing rail ring 10 is along the first thrust roller bearing rail ring 10
Circumferential annular in shape extend.The full protrusion 12 of the first of first thrust roller bearing rail ring 10 can also be set to thrust roller axis
Hold 1 radially, at the central portion of the orbital plane 11 of the first thrust roller bearing rail ring 10.First thrust roller bearing
It can also be rolled from the first exterior planar portion 13 and the first inner flat portion 14 to first with the first full protrusion 12 of rail ring 10
The first rolling surface 31 protuberance of son 30.The full protrusion 12 of the first of first thrust roller bearing rail ring 10 can also be formed as with
First exterior planar portion 13 and the second inner flat portion 24 are smoothly connected.
First full protrusion 22 of the second thrust roller bearing rail ring 20 is along the second thrust roller bearing rail ring 20
Circumferential annular in shape extend.The full protrusion 22 of the first of second thrust roller bearing rail ring 20 can also be set to thrust roller axis
Hold 1 radially, at the central portion of the orbital plane 21 of the second thrust roller bearing rail ring 20.Second thrust roller bearing
It can also be rolled from the second exterior planar portion 23 and the second inner flat portion 24 to first with the first full protrusion 22 of rail ring 20
The first rolling surface 31 protuberance of son 30.The full protrusion 22 of the first of second thrust roller bearing rail ring 20 can also be formed as with
First exterior planar portion 13 and the second inner flat portion 24 are smoothly connected.
Referring to Fig. 5 and Fig. 6, the radial section (diameter of the first thrust roller bearing rail ring 10 of thrust roller bearing 1
To section, the radial section of the second thrust roller bearing rail ring 20) in, the first surface of the first full protrusion 12,22
The shape of 12s, 22s are first single circular arc.First full protrusion 12 of the first thrust roller bearing rail ring 10 is in have with point
O1Centered on single curvature radius r1Circle local shape.First full protrusion of the second thrust roller bearing rail ring 20
22 in with point O2Centered on single curvature radius r2Circle local shape.
In the present embodiment, the radius of curvature r of the first full protrusion 22 of the second thrust roller bearing rail ring 202With
The radius of curvature r of first full protrusion 12 of the first thrust roller bearing rail ring 101It is equal.Second thrust roller bearing rail
The radius of curvature r of the full protrusion 22 of the first of road circle 202With the first full protrusion 12 of the first thrust roller bearing rail ring 10
Radius of curvature r1It can also be different.
Referring to Fig. 6, the first rolling surface 31 of the first roller 30 is in the side that the first roller shaft 30r of the first roller 30 extends
Center 31c in (radial direction of thrust roller bearing 1) can also with it is the first of the first thrust roller bearing rail ring 10 complete
Center 12c contact radially of the protrusion 12 in thrust roller bearing 1.First rolling surface 31 of the first roller 30 is in the first roller
The center 31c on direction (radial direction of thrust roller bearing 1) that 30 the first roller shaft 30r extends can also be with the second thrust
Center 22c contact radially of the first full protrusion 22 of roller bearing rail ring 20 in thrust roller bearing 1.
The first thrust roller bearing rail ring 10 including the first full protrusion 12 and including the first full protrusion 22
An example of the manufacturing method of two thrust roller bearing rail rings 20 also may include following process.Prepare that there is approximately fixed thickness
The cricoid board member of degree.By the way that the part of cricoid board member is cut into remaining first full protrusion 12,22, to form the
One full protrusion 12,22.
The first thrust roller bearing rail ring 10 including the first full protrusion 12 and including the first full protrusion 22
Another example of the manufacturing method of two thrust roller bearing rail rings 20 also may include following process.Prepare to have approximately fixed
The cricoid board member of thickness.By thickening the wall portion of a part of cricoid board member, thus the first full protrusion 12 of formation,
22。
First roller 30 is along the first thrust roller bearing rail ring 10 and the second thrust roller bearing rail ring 20
It is arranged circumferentially between the first thrust roller bearing rail ring 10 and the second thrust roller bearing rail ring 20.First rolling
Son 30 or cylinder roller or needle rollers.First roller 30 is respectively provided with the first rolling surface 31, first rolling surface 31
With the orbital plane 11 of the first thrust roller bearing rail ring 10 and the second thrust roller bearing rail ring 20,21, especially
It is that the first full protrusion 12,22 contacts.First roller 30 does not have protrusion.Therefore, the cost of thrust roller bearing 1 can be reduced.
Referring to Fig. 4,30 one side of the first roller is centered on along the first radial roller shaft 30r of thrust roller bearing 1
Rotation, on one side in thrust roller bearing rail ring (the first thrust roller bearing rail ring 10 and the second thrust roller axis
Hold with rail ring 20) orbital plane 11,21 on roll.First roller 30 has the first roller length L1.First roller length L1It is fixed
Justice is between the first end face outside 33 of the first roller 30 and the first inner side end 34 of the first roller 30 in the first roller shaft
Distance on 30r.First outboard end 36 of the first rolling surface 31 of the first roller 30 is the of 33 side of the first end face outside
The end of one rolling surface 31.First medial end 37 of the first rolling surface 31 of the first roller 30 is 34 side of the first inner side end
The first rolling surface 31 end.First roller 30 can also be in the first end face outside 33 of the first roller 30 and the first rolling surface
Corner portion 32 is equipped between 31 and between the first end face outside 33 and the first rolling surface 31 of the first roller 30.
Retainer 40 has the multiple grooves 45 configured in a manner of interval in the circumferential.First roller 30 is received respectively
It is dissolved in groove 45.Retainer 40 keeps the first roller 30 in such a way that the first roller 30 is non-touching each other.
The action state of the thrust roller bearing 1 of present embodiment is illustrated.In the movement shape of thrust roller bearing 1
Under state, the first roller 30 of the groove 45 of retainer 40 is contained in thrust roller bearing rail ring (the first thrust roller axis
Hold with rail ring 10 and the second thrust roller bearing rail ring 20) orbital plane 11,21 on roll.Specifically, first
Roller 30 is on the first full protrusion 12 for being set to the first thrust roller bearing rail ring 10 and set on the second thrust roller bearing
It is rolled on the first full protrusion 22 of rail ring 20.First thrust roller bearing is with rail ring 10 via the first roller 30 with shaft
It is rotated centered on 8 relative to the second thrust roller bearing rail ring 20.
The embodiment of present embodiment is illustrated.
Fig. 7 indicate the first thrust roller bearing with rail ring 10 relative to the second thrust roller bearing rail ring 20 revolving speed with
Between the specific temperature rise of the thrust roller bearing of the specific temperature rise and comparative example 1 of the thrust roller bearing 1 of the present embodiment
Relationship.First thrust roller bearing is defined as relative to the second thrust roller bearing with the revolving speed of rail ring 20 with rail ring 10
First thrust roller bearing is with rail ring 10 relative to the second thrust roller bearing rail ring 20 in rotation speed interior per minute
Degree.
In the thrust roller bearing 1 of the present embodiment, the first full protrusion 12 of the first thrust roller bearing rail ring 10
Radius of curvature r with 520mm1, and the first full protrusion 22 of the second thrust roller bearing rail ring 20 has the song of 520mm
Rate radius r2.In the thrust roller bearing of comparative example 1, it is complete that first is omitted from the thrust roller bearing 1 of present embodiment
Protrusion 12,22.
In the thrust roller bearing 1 of the present embodiment and the thrust roller bearing of comparative example 1, the first roller 30 is along
First roller shaft 30r of one roller 30 has the first roller length of 5.4mm.The present embodiment thrust roller bearing 1 with
And apply the thrust load of 3kN on the thrust roller bearing of comparative example 1.The present embodiment thrust roller bearing 1 and compare
The lubricating oil of the viscosity with ISOVG323 is used on the thrust roller bearing of example 1.The thrust roller bearing 1 of the present embodiment and
The specific temperature rise of the thrust roller bearing of comparative example 1 is the specific temperature rise of the first interarea 15 and the second interarea 25.
As shown in fig. 7, the specific temperature rise of the thrust roller bearing 1 of the present embodiment and the thrust roller axis of comparative example 1
The specific temperature rise held with the first thrust roller bearing with rail ring 10 relative to the second thrust roller bearing rail ring
The increase of 20 revolving speed and increase.However, the thrust roller bearing 1 of the present embodiment has the thrust roller bearing than comparative example 1
The specific temperature rise of low thrust roller bearing 1.As shown in table 1, the calorific value of the thrust roller bearing 1 of the present embodiment frequently compared with
The calorific value of the thrust roller bearing of example 1 is few.
[table 1]
| Embodiment | Comparative example 1 | |
| Calorific value [W] | 2.3 | 4.8 |
| Central contact face pressure [GPa] | 1.9 | 1.2 |
| EDGE CONTACT face pressure [GPa] | 0.0 | 2.66 |
Below to compared with the thrust roller bearing of comparative example 1, the thrust roller bearing 1 of the present embodiment can make thrust roller
The calorific value of bearing 1 is reduced and is illustrated the reasons why reducing the specific temperature rise of thrust roller bearing 1.
Fig. 8 shows the present embodiment on the first rolling surface 31 of the first roller 30 radially of thrust roller bearing 1
Position d and position d at per unit length calorific value h1Between relationship.In the present specification, the per unit at the d of position
The calorific value of time be defined as the length normalization contacted according to the first rolling surface 31 with orbital plane 11,21 lines, at the d of position
The heat generated between first rolling surface 31 and orbital plane 11,21.Fig. 9 indicates the diameter in thrust roller bearing 1 of the present embodiment
First rolling surface 31 of first roller 30 at the place position d on the first rolling surface 31 of the first upward roller 30 and position d and
Contact face pressure P between orbital plane 11,211Between relationship.Referring to Fig. 6, pushing away on the first rolling surface 31 of the first roller 30
The position of the center 31c radially of power roller bearing 1 is defined as d=0.Positioned at the outside of the center 31c of the first roller 30
Position d on first rolling surface 31 of the first roller 30 is defined as positive position (d > 0).Positioned at the center 31c of first roller 30
Position d definition on first rolling surface 31 of the first roller 30 of inside is negative position (d < 0).
At the center 31c of the first roller 30, the first rolling surface 31 and thrust roller bearing track of the first roller 30
Enclose orbital plane 11, the contact of 21 lines of (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20).
At the center 31c of the first roller 30, the orbital plane 11 of the first thrust roller bearing rail ring 10 is rolled relative to the second thrust
The circular velocity of the orbital plane 21 of sub- bearing rail ring 20 and the circular velocity of the first rolling surface 31 of the first roller 30 are equal.?
At the center 31c of one roller 30, the first rolling surface 31 of the first roller 30 is not slided relative to orbital plane 11,21.Therefore,
It will not be generated at the center 31c of one roller 30 differential between the first rolling surface 31 and orbital plane 11,21 because of the first roller 30
The heat of sliding and generation.The calorific value h of the per unit length of the center 31c of first roller 301For 0 [W/mm].
In contrast, as the position d of the first roller 30 is far from the center 31c of the first roller 30, the first roller 30
The first rolling surface 31 slide more relative to orbital plane 11,21.Specifically, no matter the first rolling surface of the first roller 30
How is position d on 31, and the circular velocity of the first rolling surface 31 of the first roller 30 is fixed.In contrast, the first thrust
Peripheral speed of the orbital plane 11 of roller bearing rail ring 10 relative to the orbital plane 21 of the second thrust roller bearing rail ring 20
Degree increases with from the shaft 8 of thrust roller bearing 1 towards the outside of thrust roller bearing 1.With the position of the first roller 30
Set center 31c of the d far from the first roller 30, the circular velocity and first of the orbital plane 11 of the first thrust roller bearing rail ring 10
The difference of the circular velocity of first rolling surface 31 of roller 30 becomes larger.Therefore, as the position d of the first roller 30 is far from the first roller 30
Center 31c, the differential sliding between the first rolling surface 31 and orbital plane 11,21 of the first roller 30 becomes larger.With above-mentioned difference
Dynamic sliding becomes larger, and the heat generated between the first rolling surface 31 and orbital plane 11,21 of the first roller 30 increases.Hereinafter, above-mentioned
Heat is defined as the heat generated by the increase of circular velocity difference.
With the contact face pressure P between the first rolling surface 31 and orbital plane 11,21 of the first roller 301Increase (reduction),
The heat generated between the first rolling surface 31 and orbital plane 11,21 of the first roller 30 by above-mentioned differential sliding, which increases, (to be subtracted
It is few).Hereinafter, the heat of above-mentioned increase (reduction) is defined as the heat generated by contact face pressure.
In the present embodiment, thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust
Roller bearing rail ring 20) orbital plane 11,21 there is the first full protrusion 12,22 for contacting with the first roller 30.Thrust rolling
The radial section of sub- bearing 1 (with rail ring, (roll thrust roller bearing by the first thrust roller bearing rail ring 10, the second thrust
Sub- bearing rail ring 20) radial section) in the first full protrusion 12,22 first surface 12s, 22s shape be first
Single circular arc.The shape of first surface 12s, 22s of first full protrusion 12,22 are first single circular arc, therefore, the first full protrusion 12,
22 first surface 12s, 22s is in as the position d of the first roller 30 is far from the center 31c of the first roller 30 and far from the first rolling
The shape of first rolling surface 31 of son 30.Therefore, as shown in figure 9, the first rolling surface 31 and orbital plane 11,21 of the first roller 30
Between contact face pressure P1As the position d of the first roller 30 is reduced far from the center 31c of the first roller 30, thus because of contact
Face pressure P1The heat of generation is reduced.
Thrust load is applied on thrust roller bearing 1, so that the first thrust roller bearing rail ring 10, the second thrust
Flexible deformation occurs for roller bearing rail ring 20 and the first roller 30.Therefore, in Fig. 8 and region A shown in Fig. 9,
The first rolling surface 31 and thrust roller bearing of first roller 30 rail ring (the first thrust roller bearing rail ring 10,
Two thrust roller bearing rail rings 20) orbital plane 11,21 lines contact.In region a, increasing of the increase of circular velocity difference to heat
The influence added is bigger than contacting influence of the reduction of face pressure to the reduction of heat.Therefore, in region a, at the position d of the first roller 30
Per unit length calorific value h1As the position d of the first roller 30 increases far from the center 31c of the first roller 30.
It is identical as region A in Fig. 8 and region B shown in Fig. 9, the first rolling surface 31 of the first roller 30 also with rail
Road face 11, the contact of 21 lines.But the shape of first surface 12s, 22s of the first full protrusion 12,22 are first single circular arc, therefore,
Contact face pressure P compared with the A of region, between the first rolling surface 31 and orbital plane 11,21 of the first roller 30 in the B of region1Into
One step is reduced.In the B of region, influence of the reduction of face pressure to the reduction of the heat increase poorer than circular velocity is contacted to the increased of heat
It influences big.Therefore, in the B of region, the calorific value h of the per unit length at the position d of the first roller 301With the first roller 30
Center 31c of the position d far from the first roller 30 and reduce.
The shape of first surface 12s, 22s of first full protrusion 12,22 are first single circular arc.First full protrusion 12,22
First surface 12s, 22s have as the position d of the first roller 30 is far from the center 31c of the first roller 30 and far from the first roller
The shape of 30 the first rolling surface 31.Therefore, in Fig. 8 and region C shown in Fig. 9, even if the first thrust roller bearing is used
Flexible deformation occurs for rail ring 10, the second thrust roller bearing rail ring 20 and the first roller 30, and the of the first roller 30
One rolling surface 31 will not be contacted with orbital plane 11,21 lines.
In the C of region, the first rolling surface 31 and thrust roller bearing rail ring (first of the first roller 30 will not occur
Thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20) orbital plane 11,21 between differential cunning
It is dynamic.In the C of region, the first rolling surface 31 and thrust roller bearing rail ring (the first thrust roller bearing of the first roller 30
With rail ring 10, the second thrust roller bearing rail ring 30) orbital plane 11,21 between contact face pressure P1It is zero.In area
In the C of domain, the calorific value h of the per unit length at the position d of the first roller 301It is zero.The full protrusion 12,22 of the first of the present embodiment
It can prevent the edge load in aftermentioned comparative example 1.
Figure 10 indicate comparative example 1 on the first rolling surface 31 of the first roller 30 radially of thrust roller bearing 1
Position d and position d at per unit length calorific value h2Between relationship.Figure 11 indicate comparative example 1 in thrust roller
The rolling surface of the first roller 30 at position d and position d on first rolling surface 31 of the first roller 30 radially of bearing 1
Contact face pressure P between the orbital plane of thrust roller bearing rail ring2Between relationship.
In comparative example 1, the orbital plane of thrust roller bearing rail ring is flat, does not have the first full protrusion 12,22.It pushes away
Power load is applied to thrust roller bearing rail ring, so that bullet occurs for thrust roller bearing rail ring and the first roller 30
Property deformation.Therefore, the first rolling surface 31 of the first roller 30 and the track brought into linear contact of thrust roller bearing rail ring.
As shown in figure 11, between the first rolling surface 31 and the orbital plane of thrust roller bearing rail ring of the first roller 30
Contact face pressure P2As the position d of the first roller 30 increases far from the center 31c of the first roller 30.In particular, in comparative example 1
In, at the end (the first outboard end 36, the first medial end 37) of the first rolling surface 31 of the first roller 30, the first roller 30
The first rolling surface 31 and the orbital plane of thrust roller bearing rail ring between contact face pressure P2Sharp increase.Comparing
In example 1, the end (the first outboard end 36, the first medial end 37) of the first rolling surface 31 of the first roller 30 and thrust roller
Biggish edge load can be generated between the orbital plane of bearing rail ring.
Therefore, in comparative example 1, as the position d of the first roller 30 is far from the center 31c of the first roller 30, because of peripheral speed
The heat that degree difference generates increases, while because contacting face pressure P2The heat of generation also increases.As shown in Figure 10, in comparative example 1, with
Center 31c of the position d of one roller 30 far from the first roller 30, in the first rolling surface 31 and thrust roller axis of the first roller 30
The heat generated between the orbital plane with rail ring is held sharp to increase.
In this way, the thrust roller bearing 1 of the present embodiment can make the first roller compared with the thrust roller bearing 1 of comparative example 1
30 the first rolling surface 31 and thrust roller bearing with rail ring, (roll by the first thrust roller bearing rail ring 10, the second thrust
Sub- bearing rail ring 20) orbital plane 11,21 between generate heat reduce.The thrust roller bearing 1 of the present embodiment is compared with
The thrust roller bearing of example 1 is compared, and the temperature of thrust roller bearing 1 can be inhibited to rise.
As shown in table 2, the thrust roller bearing 1 of the present embodiment is more than the thrust roller bearing of comparative example 2 and comparative example 3
The first rolling surface 31 because of the first roller 30 be can be reduced relative to thrust roller bearing rail ring (the first thrust roller bearing use
Rail ring 10, the second thrust roller bearing rail ring 20) orbital plane 11,21 sliding and generate heat.
[table 2]
| Embodiment | Comparative example 2 | Comparative example 3 | |
| Calorific value [W] | 2.3 | 4.6 | 3.9 |
| Central contact face pressure [GPa] | 1.9 | 1.2 | 1.2 |
In the thrust bearing of comparative example 2, the orbital plane of thrust roller bearing rail ring has the full protrusion of logarithm, with generation
For the first full protrusion 12,22 of the thrust roller bearing 1 of the present embodiment.Radial section (the thrust roller axis of thrust roller bearing
Hold the radial section with rail ring) the shape on surface of the full protrusion of logarithm be logarithmic curve.In the thrust bearing of comparative example 3
In, the orbital plane of thrust roller bearing rail ring has local protrusions, to replace the of the thrust roller bearing 1 of the present embodiment
One full protrusion 12,22.Local protrusions refer to and the only Local Phase of the rolling surface (the first rolling surface 31) of roller (the first roller 30)
Pair protrusion.
Thrust load is applied on thrust roller bearing 1, so that the first thrust roller bearing rail ring 10, the second thrust
Flexible deformation occurs for roller bearing rail ring 20 and the first roller 30.The first rolling surface 31 and orbital plane of first roller 30
11,21 lines contact.The shape of first surface 12s, 22s of first full protrusion 12,22 are first single circular arc, therefore, the present embodiment
Compared with comparative example 2 and comparative example 3, the first rolling surface 31 that can be reduced the first roller 30 is contacted with orbital plane 11,21 lines
Length.Therefore, the thrust roller bearing 1 of the present embodiment can be reduced because the first rolling surface 31 of the first roller 30 is rolled relative to thrust
The orbital plane of sub- bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20)
11, the heat of 21 slidings and generation.
Figure 12 indicates the radius of curvature r of the first full protrusion 12,22 of present embodiment1、r2With central contact face pressure and side
Edge contacts the relationship between face pressure.EDGE CONTACT face pressure is defined as the end of the first rolling surface 31 of the first roller 30 (outside first
Side end 36, the first medial end 37) at, the first rolling surface 31 and the thrust roller axis of present embodiment of the first roller 30
Hold with the orbital plane 11 of rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20),
Contact face pressure between 21.Central contact face pressure is defined as the first rolling at the center 31c of the first roller 30, the first roller 30
Thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust in dynamic face 31 and present embodiment
Roller bearing rail ring 20) orbital plane 11,21 between contact face pressure.
When edge contact area buckling is big, the first rolling surface 31 of the first roller 30 end (the first outboard end 36,
First medial end 37) at the contact portion of orbital plane 11,21, thrust roller bearing rail ring (the first thrust roller bearing
With rail ring 10, the second thrust roller bearing rail ring 20) breakage occurs.This thrust roller bearing track in order to prevent
Enclose the breakage of (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20), EDGE CONTACT face pressure
Both can be 2.6Gpa or less, or 2.49Gpa is hereinafter, can also be 2.15GPa or less, or 1.6Gpa with
Under.This thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust roller axis in order to prevent
Hold with rail ring 20) breakage, the radius of curvature r of the full protrusion 12,22 of the first of present embodiment1、r2Both can for 2100mm with
Under, or 2000nm is hereinafter, can also be 1600mm or less, or 1200mm or less.
In the thrust roller bearing rail ring of present embodiment, (the first thrust roller bearing rail ring 10, second are pushed away
Power roller bearing rail ring 20) orbital plane 11,21 have the first full protrusion 12,22.Therefore, as shown in Fig. 9 and Figure 11,
Central contact face pressure (the P of present embodiment1(d=0)) than the central contact face pressure (P of comparative example 12(d=0)) big.
When the central contact buckling of present embodiment is big, in the center 31c and present embodiment of first roller 30
Thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20)
At the contact portion of orbital plane 11,21, thrust roller bearing rail ring (the first thrust roller bearing track of present embodiment
The 10, second thrust roller bearing rail ring 20 of circle) breakage can occur.This thrust roller bearing rail ring in order to prevent
The breakage of (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20), in present embodiment
It both can be 2.0Gpa or less that the heart, which contacts face pressure, or 1.8Gpa is hereinafter, can also be 1.7GPa or less, or
1.67Gpa following.This thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, second in order to prevent
Thrust roller bearing rail ring 20) breakage, the radius of curvature r of the full protrusion 12,22 of the first of present embodiment1、r2It both can be with
For 250mm or more, or 445mm or more can also be 600mm or more, or 720mm or more.
Thrust roller bearing 1 and thrust roller bearing rail ring (the first thrust roller bearing to present embodiment
With rail ring 10, the second thrust roller bearing rail ring 20) effect be illustrated.
The thrust roller bearing 1 of present embodiment includes: the first thrust roller bearing rail ring 10, the second thrust roller
Bearing rail ring 20 and multiple first rollers 30, multiple above-mentioned first rollers 30 are along the first thrust roller bearing rail ring 10
It is arranged circumferentially in the first thrust roller bearing rail ring 10 and the second thrust with the second thrust roller bearing rail ring 20
Roller bearing is between rail ring 20.First thrust roller bearing rail ring 10 and the second thrust roller bearing rail ring
20 respectively include the orbital plane 11,21 rolled for the first roller 30.The orbital plane 11 of first thrust roller bearing rail ring 10
And second at least one of the orbital plane 21 of thrust roller bearing rail ring 20 there is the contacted with the first roller 30
One full protrusion 12,22.The shape of first surface 12s, 22s of the first full protrusion 12,22 in the radial section of thrust roller bearing 1
Shape is first single circular arc.
The shape of first surface 12s, 22s are that the first full protrusion 12,22 of first single circular arc can be reduced because circular velocity difference produces
Raw heat and the heat because of contact face pressure generation.The thrust roller bearing 1 of present embodiment can be reduced because of the first roller 30
One rolling surface 31 is relative to thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust roller
Bearing rail ring 20) orbital plane 11,21 sliding and generate heat.The thrust roller bearing 1 of present embodiment can prevent because
It is above-mentioned heat and thrust roller bearing with rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing use
Rail ring 20) orbital plane 11,21 on generate surface starting point removing.
The shape of first surface 12s, 22s are that the first full protrusion 12,22 of first single circular arc can be reduced in the first roller 30
End (the first outboard end 36, the first medial end 37) and thrust roller bearing rail ring (the first thrust roller bearing
With rail ring 10, the second thrust roller bearing rail ring 20) orbital plane 11,21 between the edge load that generates.This implementation
The thrust roller bearing 1 of mode can prevent thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, second
Thrust roller bearing rail ring 20) it is damaged because of above-mentioned edge load.
In the thrust roller bearing 1 of present embodiment, first single circular arc has 250mm or more and 2100mm song below
Rate radius r1、r2.Therefore, capable of preventing thrust roller bearing rail ring, (the first thrust roller bearing rail ring 10, second push away
Power roller bearing rail ring 20) it is damaged.
The thrust roller bearing of present embodiment rail ring (the first thrust roller bearing rail ring 10, the second thrust
Roller bearing rail ring 20) it include the orbital plane 11,21 rolled for multiple first rollers 30.Orbital plane 11,21 has and the
First full protrusion 12,22 of one roller 30 contact.Thrust roller bearing rail ring (the first thrust roller bearing rail ring
10, the second thrust roller bearing rail ring 20) radial section in the first full protrusion 12,22 first surface 12s, 22s
Shape be first single circular arc.
The shape of first surface 12s, 22s are that the first full protrusion 12,22 of first single circular arc can be reduced because circular velocity difference produces
Raw heat and the heat because of contact face pressure generation.The thrust roller bearing of present embodiment rail ring (the first thrust roller axis
Hold with rail ring 10, the second thrust roller bearing rail ring 20) it can be reduced because the first roller 30 is relative to thrust roller bearing
With the orbital plane 11,21 of rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20)
The heat of sliding and generation.The thrust roller bearing of present embodiment rail ring (the first thrust roller bearing rail ring 10,
Two thrust roller bearing rail rings 20) it can prevent due to above-mentioned heat in thrust roller bearing rail ring (the first thrust roller
Bearing rail ring 10, the second thrust roller bearing rail ring 20) orbital plane 11,21 on generate surface starting point removing.
The shape of first surface 12s, 22s are that the first full protrusion 12,22 of first single circular arc can be reduced in the first roller 30
End (the first outboard end 36, the first medial end 37) and thrust roller bearing rail ring (the first thrust roller bearing
With rail ring 10, the second thrust roller bearing rail ring 20) orbital plane 11,21 between the edge load that generates.This implementation
The thrust roller bearing of mode is with rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing track
Circle 20) can prevent from making because of above-mentioned edge load thrust roller bearing rail ring (the first thrust roller bearing rail ring 10,
Second thrust roller bearing rail ring 20) it is damaged.
In the thrust roller bearing rail ring of present embodiment, (the first thrust roller bearing rail ring 10, second are pushed away
Power roller bearing rail ring 20) in, first single circular arc has 250mm or more and 2100mm radius of curvature r below1、r2.Cause
This, can prevent thrust roller bearing with rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail
Road circle 20) it is damaged.
(embodiment 2)
The thrust roller bearing 1a and thrust roller bearing rail ring (the first thrust roller of 3 pairs of embodiments 2 referring to Fig.1
Bearing is illustrated with rail ring 10a, the second thrust roller bearing with rail ring 20a).The thrust roller bearing of present embodiment
(the first thrust roller bearing is with rail ring 10a, the second thrust roller bearing track with rail ring for 1a and thrust roller bearing
Circle 20a) include and the thrust roller bearing 1 of embodiment 1 and thrust roller bearing rail ring (the first thrust roller bearing
With rail ring 10, the second thrust roller bearing rail ring 20) identical structure, but it is mainly different on following point.
In the thrust roller bearing 1a of present embodiment, the first roller 30a is taper roller.As taper roller
One roller 30a has with the diameter that becomes larger from the first medial end 37 towards the first outboard end 36.
In the thrust roller bearing 1a of present embodiment, the orbital plane of the first thrust roller bearing rail ring 10a
11a, 21a do not include Fig. 2 and the first exterior planar shown in fig. 5 portion 13 and the first inner flat portion 14.First thrust roller
Bearing rail ring 10a includes positioned at the first outside eaves portion 51 in the outside of orbital plane 11a and positioned at the inside of orbital plane 11a
First inside eaves portion 52.First outside eaves portion 51 and the first inside eaves portion 52 are to the first roller 30a in thrust roller bearing 1a
Position radially limited.Be also possible at least one of the first outside eaves portion 51 and the first inside eaves portion 52 with
First roller 30a is contacted and is guided to the first roller 30a.
In the thrust roller bearing 1a of present embodiment, the orbital plane of the second thrust roller bearing rail ring 20a
11a, 21a do not include Fig. 3 and the second exterior planar shown in fig. 5 portion 23 and the second inner flat portion 24.Second thrust roller
Bearing rail ring 20a includes positioned at the second outside eaves portion 56 in the outside of orbital plane 21a and positioned at the inside of orbital plane 21a
Second inside eaves portion 57.Second outside eaves portion 56 and the second inside eaves portion 57 are to the first roller 30a in thrust roller bearing 1a
Position radially limited.Be also possible at least one of the second outside eaves portion 56 and the second inside eaves portion 57 with
First roller 30a is contacted and is guided to the first roller 30a.
The thrust roller bearing 1b and thrust roller bearing rail ring of 4 pairs of modified embodiment of the present embodiment referring to Fig.1
(the first thrust roller bearing is illustrated with rail ring 10a, the second thrust roller bearing with rail ring 20a).Present embodiment
Variation thrust roller bearing 1b and thrust roller bearing with rail ring (the first thrust roller bearing rail ring 10a,
Second thrust roller bearing rail ring 20) it include being used with the thrust roller bearing 1a and thrust roller bearing of present embodiment
Rail ring (the first thrust roller bearing rail ring 10a, the second thrust roller bearing identical structure of rail ring 20a), but
It is mainly different on following point.
Second thrust roller bearing rail ring 20 of modified embodiment of the present embodiment has to be pushed away with the second of embodiment 1
The power roller bearing identical structure of rail ring 20.The second thrust roller bearing rail ring 20 of modified embodiment of the present embodiment
Orbital plane 21 include the second exterior planar portion 23 and the second inner flat portion 24.The second of modified embodiment of the present embodiment pushes away
Power roller bearing rail ring 20 includes the second outside eaves portion 56 and the second inside eaves portion 57 shown in Figure 13.
The retainer 40b of modified embodiment of the present embodiment includes rake 43, and the rake 43 is with from thrust roller
The inside of bearing 1b towards outside and the mode of orbital plane 21 far from the second thrust roller bearing rail ring 20 tilts.To
The groove 45 that one roller 30a is accommodated is configured at rake 43.
Thrust roller of the effect of thrust roller bearing 1a, 1b of this embodiment and its modifications example in addition to embodiment 1
Except the effect of bearing 1, effect below is also played.
The first roller 30a as taper roller have with from the first medial end 37 towards the first outboard end 36 and
The diameter become larger.The circular velocity of the first rolling surface 31 of first roller 30a is with from the first medial end 37 towards first
Outboard end 36 and increase.The first roller 30a as taper roller can be reduced the radial direction (in thrust roller bearing 1a, 1b
The direction that the first roller shaft of one roller 30a extends) on the circular velocity of the first rolling surface 31 of the first roller 30a pushed away with first
Difference of the power roller bearing between the circular velocity of the orbital plane 11a of rail ring 10a.
Therefore, thrust roller bearing 1a, 1b of this embodiment and its modifications example can be reduced the first roller 30a relative to pushing away
Power roller bearing with rail ring (the first thrust roller bearing rail ring 10a, the second thrust roller bearing rail ring 20,
The sliding of orbital plane 11a, 21,21a 20a), to reduce the heat generated by above-mentioned sliding.The thrust of present embodiment is rolled
Sub- bearing 1a, 1b can prevent because it is above-mentioned heat due to thrust roller bearing rail ring (the first thrust roller bearing rail ring 10,
Second thrust roller bearing rail ring 20,20a) orbital plane 11a, 21, starting point removing in surface is generated on 21a.
(embodiment 3)
5 to Figure 17 to the thrust roller bearing 1c and thrust roller bearing rail ring of embodiment 3, (first is pushed away referring to Fig.1
Power roller bearing is illustrated with rail ring 10c, the second thrust roller bearing with rail ring 20c).The thrust of present embodiment is rolled
Sub- bearing 1c and thrust roller bearing rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller bearing
Include and the thrust roller bearing 1 of embodiment 1 and (the first thrust rolling of thrust roller bearing rail ring with rail ring 20c)
Sub- bearing rail ring 10, the second thrust roller bearing rail ring 20) identical structure, but it is mainly different on following point.
As shown in figure 15, the thrust roller bearing 1c of present embodiment includes multiple row roller (the first roller 30c, the second rolling
Son is 60).Specifically, the thrust roller bearing 1c of present embodiment is in the first thrust roller bearing rail ring 10c and second
It further include multiple second rollers 60 between thrust roller bearing rail ring 20c.Second roller 60 is along the first thrust roller bearing
It is arranged circumferentially with rail ring 10c and the second thrust roller bearing rail ring 20c.Second roller 60 is configured at the first roller
The inside of 30c.In thrust roller bearing rail ring, (the first thrust roller bearing rail ring 10c, second push away second roller 60
Power roller bearing is rolled in orbital plane 11c, 21c of rail ring 20c).
In the present embodiment, the first thrust roller bearing has and the second roller 60 with the orbital plane 11c of rail ring 10c
Contact the second full protrusion 16, and the orbital plane 21c of the second thrust roller bearing rail ring 20c have connect with the second roller 60
Second full protrusion 26 of touching.It is also possible to orbital plane 11c and the rolling of the second thrust of the first thrust roller bearing rail ring 10c
Sub- bearing at least one of orbital plane 21c of rail ring 20c have contacted with the second roller 60 the second full protrusion 16,
26.Second full protrusion 16 is located at the inside of the first full protrusion 12, and the second full protrusion 26 is located at the inside of the first full protrusion 22.
First thrust roller bearing rail ring 10c can also have the first inner flat in the outside of the second full protrusion 16
Portion 14.First thrust roller bearing rail ring 10c can also have third flat part 17 in the inside of the second full protrusion 16.The
It two full protrusions 16 can also be from the first inner flat portion 14 and third flat part 17 to the first rolling surface 31 of the first roller 30
Protuberance.Second full protrusion 16 can also be formed as smoothly being connected with the first inner flat portion 14 and third flat part 17.
Second thrust roller bearing rail ring 20c can also have the second inner flat in the outside of the second full protrusion 26
Portion 24.Second thrust roller bearing rail ring 20c can also have the 4th flat part 27 in the inside of the second full protrusion 26.The
It two full protrusions 26 can also be from the second inner flat portion 24 and the 4th flat part 27 to the first rolling surface 31 of the first roller 30
Protuberance.Second full protrusion 26 can also be formed as smoothly being connected with the second inner flat portion 24 and the 4th flat part 27.
Orbital plane 11c includes the second surface 16s of the full protrusion 16 first surface 12s and second of the first full protrusion 12.Rail
Road face 11c can also further include the first exterior planar portion 13 in the outside of the first full protrusion 12.Orbital plane 21c includes first complete convex
The second surface 26s of the full protrusion 26 the first surface 22s in portion 22 and second.Orbital plane 21c can also be in the first full protrusion 22
Outside further includes the second exterior planar portion 23.
(radial section of the first thrust roller bearing rail ring 10c, second push away the radial section of thrust roller bearing 1c
The power roller bearing radial section of rail ring 20c) in, the shape of second surface 16s, 26s of the second full protrusion 16,26 be
Second single circular arc.The radius of curvature for being also possible to the second full protrusion 16,26 is equal with the radius of curvature of the first full protrusion 12,22.
The radius of curvature for being also possible to the second full protrusion 16,26 is different from the radius of curvature of the first full protrusion 12,22.
Thrust roller bearing rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller in order to prevent
End (second outboard end 66, second medial end 67) and thrust roller axis of the bearing with rail ring 20c) in the second roller 60
Hold the orbital plane with rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
It is damaged at the contact portion of 11c, 21c, the radius of curvature of the full protrusion 16,26 of the second of present embodiment both can for 2100mm with
Under, or 2000nm is hereinafter, can also be 1600mm or less, or 1200mm or less.This embodiment party in order to prevent
(the first thrust roller bearing is with rail ring 10c, the second thrust roller bearing rail ring with rail ring for the thrust roller bearing of formula
Above-mentioned this breakage 20c), the radius of curvature of the full protrusion 16,26 of the second of present embodiment both can be 250mm or more,
It can be 445mm or more, can also be 600mm or more, or 720mm or more.
First roller 30c of present embodiment has structure identical with the first roller 30 of embodiment 1, but following
It is different on point.The first roller length L of first roller 30c of present embodiment1cFirst rolling of (referring to Fig.1 6) than embodiment 1
First roller length L of son 301(referring to Fig. 4) is short.
Referring to Fig.1 7, the second roller 60 has the second roller length L2.Second roller length L2It is defined as the second roller 60
Second end face outside 63 between the second inner side end 64 of the second roller 60 on the second roller shaft 60r at a distance from.Second
60 one side of roller centered on the second radial roller shaft 60r of thrust roller bearing 1c to rotate, on one side in thrust roller
Bearing rail ring (the orbital plane of the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
It is rolled on 11c, 21c.Second outboard end 66 of the second rolling surface 61 of the second roller 60 is 63 side of the second end face outside
The end of second rolling surface 61.Second medial end 67 of the second rolling surface 61 of the second roller 60 is the second inner side end 64 1
The end of second rolling surface 61 of side.Second roller 60 can also be rolled in the second end face outside 63 and second of the second roller 60
Corner portion 62 is equipped between face 61 and between the second inner side end 64 and the second rolling surface 61 of the second roller 60.
Second roller 60 of present embodiment has structure identical with the first roller 30 of embodiment 1, but following
It is different on point.Second roller length L of the second roller 60 of present embodiment2First rolling of (referring to Fig.1 7) than embodiment 1
First roller length L of son 301(referring to Fig. 4) is short.The first roller length L of first roller 30c of present embodiment1cWith second
Second roller length L of roller 602The sum of can also be than the first roller length L of embodiment 11It is short.Second roller 60 can also be with
With structure identical with the first roller 30c.
The thrust roller bearing 1c and thrust roller bearing of present embodiment with rail ring, (use by the first thrust roller bearing
Rail ring 10c, the second thrust roller bearing with the effect of rail ring 20c) in addition to the thrust roller bearing 1 of embodiment 1 and
Thrust roller bearing rail ring (the first thrust roller bearing rail ring 10, the second thrust roller bearing rail ring 20)
Except effect, effect below is also acted as.
The thrust roller bearing 1c of present embodiment further includes multiple second rollers 60, and multiple above-mentioned second rollers 60 are along
One thrust roller bearing is arranged circumferentially in the first thrust with rail ring 10c's and the second thrust roller bearing rail ring 20c
Roller bearing is between rail ring 10c and the second thrust roller bearing rail ring 20c.Second roller 60 is in the first thrust roller
Bearing is rolled with the orbital plane 11c of rail ring 10c and the second thrust roller bearing on the orbital plane 21c of rail ring 20c.The
The orbital plane of one thrust roller bearing the orbital plane 11c and the second thrust roller bearing rail ring 20c of rail ring 10c
At least one of 21c has the second full protrusion 16,26 contacted with the second roller 60.Second full protrusion 16,26 is located at first
The inside of full protrusion 12,22.The second surface 16s of the second full protrusion 16,26 in the radial section of thrust roller bearing 1c,
The shape of 26s is second single circular arc.
The thrust roller bearing 1c of present embodiment is in the first thrust roller bearing rail ring 10c and the second thrust roller
Bearing between rail ring 20c include the first roller 30c and the second roller 60.The second rolling contacted with the second full protrusion 16,26
Son 60 is configured at the inside of the first roller 30c contacted with the first full protrusion 12,22.It can make the second rolling surface of the second roller 60
61 circular velocity is lower than the circular velocity of the second rolling surface 61 of the first roller 30c.
The circular velocity and the first roller of first thrust roller bearing of the present embodiment orbital plane 11c of rail ring 10c
The first thrust roller bearing rail ring 10 of the second difference and embodiment 1 between the circular velocity of the first rolling surface 31 of 30c
Orbital plane 11 circular velocity between the circular velocity of the first rolling surface 31 of the first roller 30 first difference compared to reduction.This reality
It applies the circular velocity of the orbital plane 11c of the first thrust roller bearing rail ring 10c of mode and the second of the second roller 60 rolls
The week of the orbital plane 11 of the first thrust roller bearing rail ring 10 of third difference and embodiment 1 between the circular velocity in face 61
Speed is reduced compared with the first difference between the circular velocity of the first rolling surface 31 of the first roller 30.
Therefore, compared with the first rolling surface 31 of the first roller 30 of embodiment 1, the first roller of present embodiment
The first rolling surface 31 of 30c and the second rolling surface 61 of the second roller 60 slide less relative to rolling surface 11c, 21c.This
The thrust roller bearing 1c of embodiment can be reduced because the first roller 30c the first rolling surface 31 and the second roller 60 second
Rolling surface 61 is slided relative to orbital plane 11c, 21c and the heat of generation.The thrust roller bearing 1c of present embodiment can prevent because
It is above-mentioned heat and thrust roller bearing with rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller bearing use
Rail ring 20c) orbital plane 11c, 21c on generate surface starting point removing.
The shape of second surface 16s, 26s are that the second full protrusion 16,26 of second single circular arc can be reduced in the second roller 60
End (the first outboard end 66, the second medial end 67) at, the second rolling surface 61 and thrust roller of the second roller 60
Bearing rail ring (the orbital plane of the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
Contact face pressure between 11c, 21c.The shape of second surface 16s, 26s are that the second full protrusion 16,26 of second single circular arc can subtract
Few end (the second outboard end 66, the second medial end 67) and thrust roller bearing in the second roller 60 rail ring (the
One thrust roller bearing is generated with rail ring 10c, the second thrust roller bearing between orbital plane 11c, 21c of rail ring 20c)
Edge load.The thrust roller bearing 1c of present embodiment can prevent thrust roller bearing rail ring (the first thrust roller
Bearing rail ring 10c, the second thrust roller bearing rail ring 20c) it is damaged because of above-mentioned edge load.
In the thrust roller bearing 1c of present embodiment, not only the first roller 30c bears load, and the second roller 60 is also held
By thrust load.Therefore, the thrust roller bearing 1c of present embodiment can bear bigger thrust load.
In the thrust roller bearing 1c of present embodiment, second single circular arc also can have 250mm or more and 2100mm
Radius of curvature below.Therefore, thrust roller bearing rail ring (the first thrust roller bearing rail ring 10c, can be prevented
Rail ring 20c) the breakage of two thrust roller bearings.
The thrust roller bearing of present embodiment rail ring (the first thrust roller bearing rail ring 10c, the second thrust
Roller bearing rail ring 20c) also has the second full protrusion 16,26 for contacting with multiple second rollers 60, and multiple above-mentioned second
Roller 60 rolls in orbital plane 11c, 21c.Second full protrusion 16,26 is located at the inside of the first full protrusion 12,22.Thrust roller
Bearing rail ring (the radial direction section of the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
The shape of second surface 16s, 26s of the second full protrusion 16,26 in face are second single circular arc.
The thrust roller bearing of present embodiment rail ring (the first thrust roller bearing rail ring 10c, the second thrust
Roller bearing rail ring 20c) includes the first full protrusion 12,22 and the second full protrusion 16,26, the second full protrusion 16,26
In the inside of the first full protrusion 12,22.The second roller 60 contacted with the second full protrusion 16,26 can be configured at the first roller 30c
Inside.Therefore, first rolling surface 31 of the circular velocity of the second rolling surface 61 of the second roller 60 than the first roller 30a can be made
Circular velocity is low.
The circular velocity and the first roller of first thrust roller bearing of the present embodiment orbital plane 11c of rail ring 10c
The first thrust roller bearing rail ring 10 of the second difference and embodiment 1 between the circular velocity of the first rolling surface 31 of 30c
Orbital plane 11 circular velocity between the circular velocity of the first rolling surface 31 of the first roller 30 first difference compared to reduction.This reality
It applies the circular velocity of the orbital plane 11c of the first thrust roller bearing rail ring 10c of mode and the second of the second roller 60 rolls
The week of the orbital plane 11 of the first thrust roller bearing rail ring 10 of third difference and embodiment 1 between the circular velocity in face 61
Speed is reduced compared with the first difference between the circular velocity of the first rolling surface 31 of the first roller 30.
Therefore, compared with the first rolling surface 31 of the first roller 30 of embodiment 1, the first roller of present embodiment
The first rolling surface 31 of 30c and the second rolling surface 61 of the second roller 60 slide less relative to rolling surface 11c, 21c.This
The thrust roller bearing of embodiment with rail ring, (use by the first thrust roller bearing rail ring 10c, the second thrust roller bearing
Rail ring 20c) can be reduced because the first roller 30c the first rolling surface 31 and the second roller 60 the second rolling surface 61 relative to
Thrust roller bearing rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
Orbital plane 11c, 21c sliding and generate heat.The thrust roller bearing of present embodiment rail ring (the first thrust roller axis
Holding can be prevented due to above-mentioned heat with rail ring 10c, the second thrust roller bearing rail ring 20c) in thrust roller bearing rail
Road circle (orbital plane 11c, 21c of the first thrust roller bearing rail ring 10c, the second thrust roller bearing rail ring 20c)
Upper generation surface starting point removing.
The shape of second surface 16s, 26s are that the second full protrusion 16,26 of second single circular arc can be reduced in the second roller 60
End (the second outboard end 66, the second medial end 67) at, the second rolling surface 61 and orbital plane of the second roller 60
Contact face pressure between 11c, 21c.The shape of second surface 16s, 26s are that the second full protrusion 16,26 of second single circular arc can subtract
It is generated between the end (the second outboard end 66, the second medial end 67) of the second roller 60 and orbital plane 11c, 21c less
Edge load.(the first thrust roller bearing rail ring 10c, second push away the thrust roller bearing rail ring of present embodiment
Power roller bearing rail ring 20c) it can prevent from making (the first thrust rolling of thrust roller bearing rail ring because of above-mentioned edge load
Sub- bearing is damaged with rail ring 10c, the second thrust roller bearing with rail ring 20c).
In the thrust roller bearing rail ring of present embodiment, (the first thrust roller bearing rail ring 10c, second are pushed away
For power roller bearing in rail ring 20c), second single circular arc also can have 250mm or more and 2100mm radius of curvature below.
Therefore, thrust roller bearing rail ring (the first thrust roller bearing rail ring 10c, the second thrust roller bearing can be prevented
With rail ring 20c) breakage.
Being interpreted as this disclosed embodiment is to illustrate, and do not constitute a limitation in all the points.For example, it is also possible to
It is in the first outside eaves portion 51, the first inside eaves portion 52, the second outside eaves portion 56 and second of embodiment 2 and its variation
At least one of side eaves portion 57 is set to the thrust roller bearing 1c of embodiment 1 and embodiment 3.The scope of the present invention is
By claims come indicating rather than indicated by above description, the present invention includes the meaning being equal with claims
With being had altered in range.
Symbol description
1,1a, 1b, 1c thrust roller bearing；8 shafts；10, the first thrust roller bearing rail ring of 10a, 10c；11,
11a, 11c orbital plane；12,22 first full protrusion；The center 12c, 22c；12s, 22s first surface；13 first exterior planar portions；14
First inner flat portion；15 first interareas；16,26 second full protrusion；16s, 26s second surface；17 third flat parts；20,
The second thrust roller bearing rail ring of 20a, 20c；21,21a, 21c orbital plane；23 second exterior planar portions；24 second insides
Flat part；25 second interareas；27 the 4th flat parts；30, the first roller of 30a, 30c；30r the first roller shaft；31 first roll
Face；The center 31c；32,62 corner portion；33 first end face outsides；34 first inner side ends；36 first outboard ends；In 37 first
Side end；40,40b retainer；43 rakes；45 grooves；51 first outside eaves portions；52 first inside eaves portions；56 second outsides
Eaves portion；57 second inside eaves portions；60 second rollers；60r the second roller shaft；61 second rolling surfaces；63 second end face outsides；64
Second inner side end；66 second outboard ends；67 second medial ends.
Claims (11)
1. a kind of thrust roller bearing, comprising:
First thrust roller bearing rail ring；
Second thrust roller bearing rail ring；And
Multiple first rollers, multiple first rollers are pushed away along the first thrust roller bearing rail ring and described second
Power roller bearing rail ring it is arranged circumferentially in the first thrust roller bearing rail ring and second thrust roller
Between bearing rail ring,
The first thrust roller bearing rail ring and second thrust roller bearing are respectively included with rail ring for institute
The orbital plane of the first roller rolls is stated,
The orbital plane of the first thrust roller bearing rail ring and the second thrust roller bearing rail ring
At least one of the orbital plane there is the first full protrusion with first roller contact, the thrust roller bearing
The shape of the first surface of the described first full protrusion in radial section is first single circular arc.
2. thrust roller bearing as described in claim 1, wherein
Described first single circular arc has 250mm or more and 2100mm radius of curvature below.
3. thrust roller bearing as claimed in claim 1 or 2, wherein
Center of the rolling surface of first roller in the axial direction of first roller and the described first full protrusion are in the diameter
Upward central contact.
4. thrust roller bearing as claimed any one in claims 1 to 3, wherein
First roller is cylinder roller or needle rollers.
5. thrust roller bearing as claimed any one in claims 1 to 3, wherein
First roller is taper roller.
6. the thrust roller bearing as described in any one of claims 1 to 5, wherein
It further include multiple second rollers, multiple second rollers are along the first thrust roller bearing rail ring and described
Second thrust roller bearing rail ring it is described arranged circumferentially in the first thrust roller bearing rail ring and described the
Between two thrust roller bearing rail rings,
Second roller is rolled in the orbital plane of the first thrust roller bearing rail ring and second thrust
It is rolled in the orbital plane of sub- bearing rail ring,
The orbital plane of the first thrust roller bearing rail ring and the second thrust roller bearing rail ring
At least one of the orbital plane there is the second full protrusion with second roller contact, the second full protrusion is located at
The shape of the inside of the first full protrusion, the second surface of the described second full protrusion in the radial section is
Second single circular arc.
7. thrust roller bearing as claimed in claim 6, wherein
Described second single circular arc has 250mm or more and 2100mm radius of curvature below.
8. a kind of thrust roller bearing rail ring,
Including orbital plane, multiple first rollers roll in the orbital plane,
The orbital plane has the first full protrusion with first roller contact, the diameter of the thrust roller bearing rail ring
The shape of the first surface of the described first full protrusion into section is first single circular arc.
9. thrust roller bearing rail ring as claimed in claim 8, wherein
Described first single circular arc has 250mm or more and 2100mm radius of curvature below.
10. thrust roller bearing rail ring as claimed in claim 8 or 9, wherein
The orbital plane has the second full protrusion, the second full protrusion and multiple second rollers rolled in the orbital plane
Contact,
The second full protrusion is located at the inside of the described first full protrusion, and described second in the radial section is complete convex
The shape of the second surface in portion is second single circular arc.
11. thrust roller bearing rail ring as claimed in claim 10, wherein
Described second single circular arc has 250mm or more and 2100mm radius of curvature below.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016251597 | 2016-12-26 | ||
| JP2016-251597 | 2016-12-26 | ||
| JP2017197082A JP6991823B2 (en) | 2016-12-26 | 2017-10-10 | Track wheels for thrust roller bearings and thrust roller bearings |
| JP2017-197082 | 2017-10-10 | ||
| PCT/JP2017/042587 WO2018123397A1 (en) | 2016-12-26 | 2017-11-28 | Thrust roller bearing and raceway rings for thrust roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110114586A true CN110114586A (en) | 2019-08-09 |
Family
ID=62787725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780080556.8A Pending CN110114586A (en) | 2016-12-26 | 2017-11-28 | Thrust roller bearing and thrust roller bearing rail ring |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6991823B2 (en) |
| CN (1) | CN110114586A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020122667A1 (en) | 2020-08-31 | 2022-03-03 | Schaeffler Technologies AG & Co. KG | bearing arrangement |
| DE102021106627A1 (en) | 2021-03-18 | 2022-09-22 | Schaeffler Technologies AG & Co. KG | Thrust roller bearing and actuating device for a brake unit |
| DE102021113825A1 (en) | 2021-05-28 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | thrust washer assembly |
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|---|---|---|---|---|
| JP2000027871A (en) * | 1998-06-17 | 2000-01-25 | Torrington Co:The | Improved efficiency/reduced noise generating roller thrust bearing |
| JP2007170448A (en) * | 2005-12-19 | 2007-07-05 | Ntn Corp | Raceway ring for thrust roller bearing and thrust roller bearing |
| JP2011027213A (en) * | 2009-07-28 | 2011-02-10 | Ntn Corp | Double-row roller bearing |
| JP2011094716A (en) * | 2009-10-30 | 2011-05-12 | Nsk Ltd | Thrust roller bearing |
| JP2012007709A (en) * | 2010-06-28 | 2012-01-12 | Nsk Ltd | Thrust roller bearing |
| CN203516458U (en) * | 2013-01-31 | 2014-04-02 | 日本精工株式会社 | Cylindrical roller bearing |
| CN204828283U (en) * | 2015-08-17 | 2015-12-02 | 无锡沃尔德轴承有限公司 | Top load long -life bearing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014926B2 (en) * | 1977-06-01 | 1985-04-16 | 日本精工株式会社 | Tapered roller bearings with asymmetric crowning orbits |
| JPS5934019A (en) * | 1982-08-14 | 1984-02-24 | Nippon Seiko Kk | Multiple-row thrust conical roller bearing |
| JP3628033B2 (en) * | 1993-10-21 | 2005-03-09 | 日本精工株式会社 | Thrust roller bearing with race |
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2017
- 2017-10-10 JP JP2017197082A patent/JP6991823B2/en active Active
- 2017-11-28 CN CN201780080556.8A patent/CN110114586A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027871A (en) * | 1998-06-17 | 2000-01-25 | Torrington Co:The | Improved efficiency/reduced noise generating roller thrust bearing |
| JP2007170448A (en) * | 2005-12-19 | 2007-07-05 | Ntn Corp | Raceway ring for thrust roller bearing and thrust roller bearing |
| JP2011027213A (en) * | 2009-07-28 | 2011-02-10 | Ntn Corp | Double-row roller bearing |
| JP2011094716A (en) * | 2009-10-30 | 2011-05-12 | Nsk Ltd | Thrust roller bearing |
| JP2012007709A (en) * | 2010-06-28 | 2012-01-12 | Nsk Ltd | Thrust roller bearing |
| CN203516458U (en) * | 2013-01-31 | 2014-04-02 | 日本精工株式会社 | Cylindrical roller bearing |
| CN204828283U (en) * | 2015-08-17 | 2015-12-02 | 无锡沃尔德轴承有限公司 | Top load long -life bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6991823B2 (en) | 2022-01-13 |
| JP2018105500A (en) | 2018-07-05 |
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Application publication date: 20190809 |