CN206144976U - Engineering machine tool is cylindrical roller bearing for gearbox - Google Patents
Engineering machine tool is cylindrical roller bearing for gearbox Download PDFInfo
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- CN206144976U CN206144976U CN201621151061.9U CN201621151061U CN206144976U CN 206144976 U CN206144976 U CN 206144976U CN 201621151061 U CN201621151061 U CN 201621151061U CN 206144976 U CN206144976 U CN 206144976U
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Abstract
The utility model discloses an engineering machine tool is cylindrical roller bearing for gearbox, including the outer lane, the inner circle, holder and a plurality of roller, outer ring raceway's generating line forms first convexity by the middle part is upwards protruding, the generating line of inner circle raceway is by the middle part protruding third convexity that forms second convexity and both ends upwards, the third convexity will be greater than the second convexity, the generating line middle part section of roller is the straightway, head and the tail form the fourth convexity with the middle part section for two sections, and the roller is arranged in and is kept behind the chamber, its both ends face difference butt is on the interior terminal surface of first retaining ring and second retaining ring, inner circle and the raceway on the outer lane to the bearing carry out the convexity design, the convexity design of cooperation roller generating line makes the distribution of whole bearing loading more even, and the roller utilize the holder spacing form by outer ring raceway and outer ring raceway to keep the intracavity to carry on spacing, the part balances out through first retaining ring and the axial force of second retaining ring to the roller, the service life of whole bearing is prolonged.
Description
Technical field
This utility model is related to cylinder roller bearing, more particularly to construction machinery gear box cylinder roller bearing.
Background technology
One of most important part of the box engineering machinery of speed change, is divided into planetary transmission and fixed shaft type becomes by its gear train
There are many power transmission shafts to coordinate many free gears to realize the conversion of gear ratio between input and output for two kinds of fast case, inside, living
Bearing can be arranged between moving gear and power transmission shaft to reduce the Relative friction between free gear and power transmission shaft, in change speed gear box
Bearing requirements are higher, for also there are higher requirement, the service life length pair of bearing fatigue life in addition to machining accuracy is required
Important impact is played in the service life of whole change speed gear box.
Bearing is typically made up of outer ring, inner ring, retainer and roller, and wherein roller is the weakness zero in roller bearing
Part, the design of roller and workmanship have a significant impact to the service behaviour of bearing, be affect bearing service life it is main because
Element, roller its two ends after stand under load are inevitably present edge stress concentration, i.e., so-called " edge effect ", and " imitate at edge
Should " generation be major reason that bearing fatigue life is substantially reduced, to overcome " edge effect " to adopt to rolling in engineering now
Son carries out modification curve.A kind of " high accuracy is for example disclosed in notification number is for the utility model patent of CN203348329U
Biserial cylindrical roller bearing ", the bus of its roller employs that middle convexity is less, the larger loaarithmic curve shape of two ends convexity,
So that the service life that the load that roller is subject to is evenly distributed to overcome " edge effect " to improve bearing.
It is mainly in view of that processing cost is low, the advantage that manufacturing procedure is few using the design to roller bus convexity, but
Even if roller stand under load is uniform for whole bearing, but the outer ring and inner ring no less important for bearing, work China and foreign countries
Can equally there is the situation of stress concentration with inner ring in circle, therefore above-mentioned bearing is not still high on fatigue life.
Utility model content
The purpose of this utility model is to provide a kind of construction machinery gear box cylinder roller bearing, by outer ring, interior
The raceway of circle and roller effectively reduces the service life that the generation of edge effect improves whole bearing.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of construction machinery gear box cylinder roller bearing, including outer ring, inner ring, retainer and multiple rollers, institute
The both ends of the surface for stating outer ring are respectively arranged with the first back-up ring, and between two first back-up rings outer ring raceway, outer ring raceway and first gear are formed
The inner headed face of circle forms cascaded surface；The wherein end face of the inner ring horizontally outward extends to form the second back-up ring, the second gear
The inner face of circle is concordant with the inner face of the first back-up ring, and adjacent second stop portion of interior ring outer wall forms inner ring raceway, outer ring rolling
Road combines the holding chamber to be formed for spacing roller with inner ring raceway, and wherein raising up in the middle part of outer ring raceway, it is convex to form first
Degree, raises up to form the 3rd convexity of the second convexity and two ends in the middle part of inner ring raceway, and it is convex that the 3rd convexity is greater than second
Degree, the bus middle part of institute's roller is straightway, has the 4th convexity between initial and end section and straightway, and roller is placed in holding
Behind chamber, its both ends of the surface is connected to respectively on the inner face of the first back-up ring and the second back-up ring.
By adopting above-mentioned technical proposal, Design of Crown is carried out to the inner ring and the raceway on outer ring of bearing, coordinate roller
The Design of Crown of bus causes whole bearing stand under load to more uniformly spread, and roller using retainer it is spacing by outer ring raceway with
The holding intracavity that outer ring raceway is formed carries out spacing, and the two ends of roller abut spacing, energy by the first back-up ring with the second back-up ring
Avoid roller from deflecting when rolling, and the unbalance loading payload segment at roller two ends can be passed through the first back-up ring and the second back-up ring to roller
Axial force balance out, the service life of whole bearing.
Preferably, the inner ring is provided with the first taper being connected with inner ring raceway away from one end of the second back-up ring
Section, is connected between first conical section and end face by the first arc section.
By adopting above-mentioned technical proposal, the side edge loading suffered by inner ring raceway is coordinated using the first conical section and is connected
The first arc section for connecing uniformly is shared, it is to avoid the situation of stress concentration occurs in inner ring raceway side, and the use that improve inner ring is tired
The labor life-span.
Preferably, the cascaded surface and the intersection of outer ring raceway and the end face of the second back-up ring and inner ring raceway
Intersection offers the oil groove of indent.
Can store lubricating oil and roller is lubricated by adopting above-mentioned technical proposal, oil groove, can reduce roller and outer ring,
Fretting wear between inner ring, improves the service life of three.
Preferably, the cell wall of the oil groove is connected by the second arc section of indent and with the second arc section two ends
Second conical section and triconic section are constituted, and second conical section is connected with inner ring raceway, triconic section and the second back-up ring
End face connection.
Reduce handing over by the setting of oil groove again by adopting the intersection of above-mentioned technical proposal, inner ring raceway and the second back-up ring
Stress concentration at boundary, and disperseed stress using the conical section of triconic Duan Yu tetra- so that the opposite side of inner ring raceway
The situation of stress concentration is equally avoided, the service life of inner ring is further improved.
Preferably, the inwall two ends of the inner ring axis hole are provided with three-arc section, the two ends of three-arc section
It is connected with the end face of inner ring and the inwall of inner ring by the 4th conical section respectively.
By adopting above-mentioned technical proposal, the 4th taper is combined using three-arc section between the inwall and both ends of the surface of inner ring
Section avoids the stress concentration of intersection, further improves the service life of inner ring.
Preferably, the both ends of the surface of the roller include for being located at the planar section at middle part and being connected with planar section
Four arc sections, the 4th arc section is connected by arc transition section with the bus of roller.
By adopting above-mentioned technical proposal, the both ends of the surface of roller using planar section and outer ring and inner ring the first back-up ring with
Second back-up ring is abutted, due to reducing contact area so that roller is higher with the installation accuracy for keeping intracavity；Planar section and the 4th
The combination of arc section causes the both ends of the surface of roller to be similarly formed certain convexity so that the axial load distribution suffered by roller is equal
It is even, further improve the service life of roller.
Preferably, locating slot is offered on the planar section, cell wall and the axis of the locating slot have 40 ° ~ 50 °
Angle.
By adopting above-mentioned technical proposal, locating slot is more defined when opening up first when roller is processed in both ends of the surface pair
Really, the axiality of raising roller, and the stress concentration for being obliquely installed reduction and planar section intersection of cell wall；Next locating slot
Open up so that the planar section area of end face is further reduced, further reduce with the contact area of the first back-up ring, the second back-up ring, more
The further installation accuracy for improving roller so that bearing working is more stable.
Preferably, first convexity is between 0.001 ~ 0.004mm.
By adopting above-mentioned technical proposal, the load suffered by outer ring is typically little, and its corresponding first convexity is also less,
But convexity can cause " edge effect " when being less than 0.001mm, and the convexity amount more than 0.004 can cause roller intermediate stress excessive.
Preferably, second convexity is between 0.001 ~ 0.004mm, the 3rd convexity 0.004 ~ 0.007mm it
Between.
There are two different convexitys by adopting above-mentioned technical proposal, inner ring, the load suffered by it is also relatively large,
Second convexity with the 3rd convexity within this range when it is optimal.
Preferably, the 4th convexity is between 0.003 ~ 0.008mm
By adopting above-mentioned technical proposal, for roller is with respect to outer ring and inner ring, the loading force being subject to is maximum, therefore phase
Corresponding 4th convexity is also larger, and load distribution is the most uniform when in the range of this.
In sum, this utility model has the advantages that：
1st, the value design of the corresponding convexity of outer ring, inner ring and roller, the installation knot with reference to roller in inside and outside circle
Close so that the load suffered by whole bearing more uniformly spreads, and improves service life；
2nd, while the oil groove arranged on inside and outside circle plays lubrication to roller, answering for inside and outside circle corner is reduced
Power is concentrated, and improves the service life of inside and outside circle.
Description of the drawings
Fig. 1 is the sectional view of construction machinery gear box cylinder roller bearing；
Fig. 2 is the sectional view of outer ring；
Fig. 3 is the A portions enlarged drawing of Fig. 2；
Fig. 4 is the schematic diagram of outer ring raceway；
Fig. 5 is the sectional view of inner ring；
Fig. 6 is the B portions enlarged drawing of Fig. 5；
Fig. 7 is the C portions enlarged drawing of Fig. 5；
Fig. 8 is the D portions enlarged drawing of Fig. 5；
Fig. 9 is the schematic diagram of inner ring raceway；
Figure 10 is the structural representation of roller.
In figure：1st, outer ring；11st, the first back-up ring；12nd, outer ring raceway；13rd, cascaded surface；2nd, inner ring；21st, the second back-up ring；22、
Inner ring raceway；23rd, the first conical section；24th, the first arc section；25th, three-arc section；26th, the 4th conical section；3rd, retainer；4、
Roller；41st, bus；411st, straightway；412nd, first section；413rd, rear；42nd, planar section；43rd, the 4th arc section；44th, arc transition
Section；45th, locating slot；5th, oil groove；51st, the second arc section；52nd, the second conical section；53rd, triconic section.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of construction machinery gear box cylinder roller bearing, including outer ring 1, inner ring 2, retainer 3 and
Multiple rollers 4, roller 4 is embedded in retainer 3, and inner ring 2 is placed in the axis hole of outer ring 1, and the outer wall of inner ring 2 is interior with outer ring 1
Wall forms the holding chamber for housing roller 4.
With reference to Fig. 2 to Fig. 4, in cylinder, its two ends is respectively arranged with the first back-up ring 11, in two first back-up rings for outer ring 1
Outer ring raceway 12 is provided between 11 inner face, the section of outer ring raceway 12 is circle, and its middle part raises up to form first
Convexity t1, the first convexity t1Between 0.001 ~ 0.004mm, preferably the first convexity t1For 0.003mm, and outer ring raceway 12
Minimum diameter section is greater than the diameter of bore of the first back-up ring 11 so that form single order between the first back-up ring 11 and outer ring raceway 12
Tread 13.
The cascaded surface 13 of the first back-up ring 11 and the intersection of outer ring raceway 12 offer oil groove 5, and the cell wall of oil groove 5 is by the
Two arc sections 51 and the second conical section 52 being connected with the two ends of the second arc section 51 are constituted with triconic section 53, the second taper
Section 52 is connected with outer ring raceway 12, and triconic section 53 is connected with cascaded surface 13.
Referring to Fig. 5, inner ring 2 is same generally cylindrical, horizontally outward extends to form the second back-up ring 21 in its one end, second
The section of back-up ring 21 is also round, and the outer wall of inner ring 2 of adjacent second back-up ring 21 is set to inner ring raceway 22.
Referring to Fig. 9, the middle part of inner ring raceway 22 raises up to form the second convexity t2, the two ends of inner ring raceway 22 are provided with
3rd convexity t3, wherein the second convexity t2Less than the 3rd convexity t3, the second convexity t2Between 0.001 ~ 0.004mm, preferably second
Convexity t2For 0.002；3rd convexity t3Between 0.004 ~ 0.007mm, preferably the 3rd convexity t3For 0.006mm.
With reference to Fig. 5 to Fig. 8, the intersection of the back-up ring 21 of inner ring raceway 22 and second is again provided with oil groove 5, the oil groove 5 with
Oil groove 5 on outer ring 1 is identical；Inner ring 2 is provided with the first conical section 23 away from the end face of the second back-up ring 21, with the first conical section
One of 23 is connected with the first arc section 24, and the first arc section 24 is connected with the end face of inner ring 2, the other end of the first conical section 23
It is connected with inner ring raceway 22.
The inwall two ends of the axis hole of inner ring 2 are provided with three-arc section 25, and two of three-arc section 25 is respectively connected with
Four conical sections 26, one of them the 4th conical section 26 is connected with shaft hole inner wall, another 4th conical section 26 and the second back-up ring 21
End face connects.
Referring to Figure 10, the bus 41 of roller 4 includes the straightway 411 at middle part and is connected to the head at the two of straightway 411
Section 412 and rear 413, first section 412 is symmetrical arranged with rear 413, and initial and end section 412,413 forms roller 4 with straightway 411
4th convexity t4, the 4th convexity t4Between 0.003 ~ 0.008mm, preferably the 4th convexity t4For 0.006mm.
The planar section 42 of both ends of the surface of roller 4 including middle part and the 4th arc section 43 being connected with planar section 42, plane
Plane at section 42 is higher than the peak of the 4th arc section 43 so that the both ends of the surface middle part of roller 4 is convex axially outward
Go out；4th arc section 43 is connected by an arc transition section 44 with initial and end section 412,413.Middle part in planar section 42 opens up
There is a locating slot 45, with the axis of roller 4 in 40 ° ~ 50 ° of angle a, angle a is preferably 45 ° to the cell wall of locating slot 45.
During concrete installation, roller 4 is installed on holding intracavity, and holding chamber is by the outer ring raceway 12 and inner ring 2 of outer ring 1
Circle raceway 22 is constituted, and the cascaded surface 13 on outer ring 1 defines rolling just with the inner face of the second back-up ring 21 in perpendicular is same as
The plane at two planar sections 42 that son 4 is placed in after holding chamber is P, and the inner face of the first back-up ring 11 is interior with the second back-up ring 21
End face just coincides with plane P so that two planar sections 42 of roller 4 can completely be connected to the inner face of the first back-up ring 11 and
On the inner face of two back-up rings 21.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make as needed the modification without creative contribution after this specification is read to the present embodiment, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. a kind of construction machinery gear box cylinder roller bearing, including outer ring（1）, inner ring（2）, retainer（3）And it is multiple
Roller（4）, it is characterised in that the outer ring（1）Both ends of the surface be respectively arranged with the first back-up ring（11）, two first back-up rings（11）It
Between form outer ring raceway（12）, outer ring raceway（12）With the first back-up ring（11）Inner headed face formed cascaded surface（13）；The inner ring
（2）Wherein end face horizontally outward extend to form the second back-up ring（21）, second back-up ring（21）Inner face and first gear
Circle（11）Inner face it is concordant, inner ring（2）Adjacent second back-up ring of outer wall（21）Part forms inner ring raceway（22）, outer ring raceway
（12）With inner ring raceway（22）Combination is formed is used for spacing roller（4）Holding chamber, wherein outer ring raceway（12）Middle part upwards
Convex to form the first convexity, inner ring raceway（22）Middle part raise up to form the 3rd convexity of the second convexity and two ends,
Three convexitys are greater than the second convexity, institute's roller（4）Bus（41）Middle part is straightway（411）, initial and end section（412、413）
With straightway（411）Between there is the 4th convexity, and roller（4）After being placed in holding chamber, its both ends of the surface is connected to respectively first gear
Circle（11）And second back-up ring（21）Inner face on.
2. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that the inner ring（2）
Away from the second back-up ring（21）One end be provided with and inner ring raceway（22）First conical section of connection（23）, first conical section
（23）Pass through the first arc section between end face（24）Connection.
3. construction machinery gear box cylinder roller bearing according to claim 2, it is characterised in that the cascaded surface
（13）With outer ring raceway（12）Intersection and the second back-up ring（21）End face and inner ring raceway（22）Intersection open up
There is the oil groove of indent（5）.
4. construction machinery gear box cylinder roller bearing according to claim 3, it is characterised in that the oil groove（5）
Cell wall by indent the second arc section（51）And with the second arc section（51）Second conical section of two ends connection（52）With
Triconic section（53）Composition, second conical section（52）With inner ring raceway（22）Connection, triconic section（53）With second gear
Circle（21）End face connection.
5. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that the inner ring（2）
The inwall two ends of axis hole are provided with three-arc section（25）, three-arc section（25）Two ends respectively pass through the 4th conical section
（26）With inner ring（2）End face and inner ring（2）Inwall connection.
6. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that the roller（4）
Both ends of the surface include be located at middle part planar section（42）And and planar section（42）4th arc section of connection（43）, the 4th circle
Segmental arc（43）By arc transition section（44）With roller（4）Bus（41）Connection.
7. construction machinery gear box cylinder roller bearing according to claim 6, it is characterised in that the planar section
（42）On offer locating slot（45）, the locating slot（45）Cell wall and axis there is 40 ° ~ 50 ° of angle.
8. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that first convexity
Between 0.001 ~ 0.004mm.
9. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that second convexity
Between 0.001 ~ 0.004mm, the 3rd convexity is between 0.004 ~ 0.007mm.
10. construction machinery gear box cylinder roller bearing according to claim 1, it is characterised in that the described 4th is convex
Degree is between 0.003 ~ 0.008mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151061.9U CN206144976U (en) | 2016-10-29 | 2016-10-29 | Engineering machine tool is cylindrical roller bearing for gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151061.9U CN206144976U (en) | 2016-10-29 | 2016-10-29 | Engineering machine tool is cylindrical roller bearing for gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144976U true CN206144976U (en) | 2017-05-03 |
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ID=58622065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621151061.9U Active CN206144976U (en) | 2016-10-29 | 2016-10-29 | Engineering machine tool is cylindrical roller bearing for gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503321A (en) * | 2021-08-06 | 2021-10-15 | 中车大连机车研究所有限公司 | Cylindrical roller bearing for urban rail transit gear box |
-
2016
- 2016-10-29 CN CN201621151061.9U patent/CN206144976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503321A (en) * | 2021-08-06 | 2021-10-15 | 中车大连机车研究所有限公司 | Cylindrical roller bearing for urban rail transit gear box |
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