CN212003955U - Asymmetric double-row self-aligning roller bearing capable of improving single axial bearing capacity - Google Patents
Asymmetric double-row self-aligning roller bearing capable of improving single axial bearing capacity Download PDFInfo
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- CN212003955U CN212003955U CN202020139332.9U CN202020139332U CN212003955U CN 212003955 U CN212003955 U CN 212003955U CN 202020139332 U CN202020139332 U CN 202020139332U CN 212003955 U CN212003955 U CN 212003955U
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- retainer
- bearing
- raceway
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- 230000004323 axial length Effects 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 26
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The utility model relates to an improve asymmetric biserial self-aligning roller bearing of unipolar bearing capacity, including outer lane and inner circle, be equipped with between inner circle and outer lane and keep the ware, be equipped with two on the ware and be listed as the cydariform roller, first roller axial length is greater than second roller axial length, its axial height of inner circle be less than the axial height of outer lane, be equipped with on the outer face of circle along the axial arrange two interior raceways, be respectively in two interior raceways with first roller complex first interior raceway to and with the raceway in the second of second roller complex, be equipped with in the first interior raceway and the second between the raceway with the inner circle solid well flange as an organic whole, the other end of raceway all does not have the flange in first interior raceway and the second. The utility model provides the high unipolar of bearing is to bearing capacity, the long service life of bearing, the assembly of being convenient for.
Description
Technical Field
The utility model relates to a bearing technology, especially double-row self-aligning roller bearing technology specifically are asymmetric double-row self-aligning roller bearing who improves unipolar bearing capacity.
Background
The supporting points at the two ends of the tank body of the cement mixer truck support the hollow shell loaded with cement, so that the whole rigidity is poor and certain bending can be generated. Therefore, a double-row self-aligning roller bearing is selected for an output shaft end bearing of a speed reducer of a cement mixer truck, the working condition of the bearing is low speed, and the axial force proportion in the load is large.
Two rows of the common double-row self-aligning roller bearing are designed symmetrically, and the outer diameter of the retainer is larger than the inner diameter of the outer ring easily when the contact angle is too large, so that the assembly cannot be carried out, and the common contact angle is not large. And the problem of premature fatigue failure of the stressed side roller way is easy to occur when bearing large axial force, so that the common double-row self-aligning roller bearing cannot be well applied to the output shaft end of the speed reducer of the cement mixer truck.
There are also double-row self-aligning roller bearings designed by asymmetric structure, for example, patent CN104389898 and patent CN204239464 respectively propose a double-row self-aligning roller bearing designed by asymmetric structure, wherein, patent CN204239464 adopts a solid retainer design, because the bottom of the solid retainer is an arc or an approximate arc (envelope curve) which envelops the roller well, and the opening section is a cylinder, the gap between the opening section and the roller is increasingly large, when the roller is at low speed and has a vibration working condition, the roller movement can not be well restrained by the retainer, which causes abnormal contact increase such as sliding and the like, causing heating, abrasion and the like; the outer side of the stamping retainer of the patent CN104389898 adopts a general design, a small gap is formed between the stamping retainer and an inner ring, the bearing is generally lubricated in a splashing way by using liquid oil in a speed reducer, and the small gap is not beneficial to lubrication; meanwhile, in the two patents, because the bearing bears a larger proportion of axial force, the bearings provided in the two patents generate axial reverse thrust only by the contact of the cambered surfaces of the raceways, and excessive contact stress is easily caused, which affects the service life of the bearing.
Disclosure of Invention
The utility model aims at providing an improve unipolar to bearing capacity's asymmetric biserial self-aligning roller bearing, bearing inner race adopts and widens asymmetric design, the roller of underloading side adopts the short roller design of conventional symmetry, the roller of overload side adopts the design of asymmetric long roller, long roller side keeps the ware to adopt the punching press that has full lock pocket hole to keep the ware, and increase and keep ware outside terminal surface and inner circle clearance, the inner circle adopts no outside flange design and adds and establishes the well flange, inner circle axial force has been increaseed and has been born the side contact angle, thereby very big improvement the unipolar of bearing to bearing capacity, the long service life of bearing, the assembly of being convenient for.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an asymmetric double-row self-aligning roller bearing for improving single axial bearing capacity comprises an outer ring and an inner ring, wherein a retainer is arranged between the inner ring and the outer ring, two rows of drum-shaped rollers are arranged on the retainer, the two rows of drum-shaped rollers are respectively a first roller and a second roller, the axial length of the first roller is greater than that of the second roller, and the diameter of one end of the first roller, which faces the second roller in the axial direction, is greater than that of the other end of the first roller in the axial direction; the axial height of the inner ring is smaller than that of the outer ring, two rows of inner rolling paths which are distributed along the axial direction are arranged on the outer cylindrical surface of the inner ring, the two rows of inner rolling paths are respectively a first inner rolling path matched with the first roller and a second inner rolling path matched with the second roller, a middle flange which is fixedly integrated with the inner ring is arranged between the first inner rolling path and the second inner rolling path, and the other ends of the first inner rolling path and the second inner rolling path are not provided with flanges.
The retainer comprises a first retainer and a second retainer, the first retainer and the second retainer are both stamping retainers, a first pocket for assembling a first roller is arranged on the circumference of the first retainer in an equant mode, the first pocket is a full-locking pocket, a second pocket for assembling a second roller is arranged on the circumference of the second retainer in an equant mode, and the second pocket is a point-locking pocket.
And a movable middle spacer ring is arranged between the first inner raceway and the second inner raceway and used for improving the operation stability of the retainer at low speed.
The utility model has the advantages that:
1) the axial height of the outer ring is greater than that of the inner ring, so that the aligning angle of the bearing can be increased; because the adopted rollers are asymmetric, the outer ring is also asymmetrically designed, and the retainer and the rollers on the small side of the opening of the outer ring can be easily installed from the large end of the opening during assembly.
2) Because one side of the bearing bears the combined action of larger axial force and radial force, and the other side only bears certain radial force even no load, the roller at the light load side adopts the design of a conventional symmetrical short roller, and the roller at the heavy load side adopts the design of an asymmetrical long roller; the long roller can improve the bearing capacity of the bearing, but because the side has a large contact angle, when the conventional symmetrical roller design is adopted, the wall of the outer side of the inner ring is very thin, so that the strength of the bearing is reduced, and the diameter of the outer side is smaller than that of the inner side by adopting the asymmetrical spherical roller, so that the thickness of the outer side wall of the inner ring can be increased, the whole section of the bearing is effectively utilized, and the bearing capacity of the bearing is fully improved; the contact degree of the rolling body and the raceway is improved, and because the rotating speed of the bearing is very low, excessive heat cannot be generated when high contact degree is adopted, the contact stress can be reduced, and the bearing load capacity is improved.
3) One side of the long roller of the retainer adopts a full lock pocket hole, so that the motion stability of the roller under the working conditions of low speed and vibration is improved; the retainer short roller side adopts a point locking pocket hole, so that the roller can be conveniently and finally installed to complete assembly; the clearance between the end face of the outer side of the retainer and the inner ring is reduced, so that the splash lubrication is facilitated, and the lubrication and the heat dissipation are improved.
4) The inner ring can increase the axial force bearing side contact angle and improve the axial bearing capacity; the inner ring adopts a design without an outer side flange, and after the retainer and the rolling body on the small opening side of the outer ring are arranged from the large opening end of the outer ring, the inner ring can be easily assembled in place from the small opening side, so that the problem of difficult assembly is solved; the inner ring is designed with the middle flange, when the bearing bears axial load, the end surface of the roller is contacted with the middle flange, the contact stress of the roller and the roller path of the inner ring is reduced, and the fatigue life of the inner ring is prolonged.
5) The movable middle spacing ring is arranged, so that the running stability of the retainer at low speed is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the inner ring.
Fig. 3 is a cross-sectional view of the first holder.
Fig. 4 is a sectional view of the second holder.
In the figure, 01, outer ring, 02, inner ring, 21, first inner raceway, 22, second inner raceway, 23, middle rib, 17, first retainer, 27, second retainer, 171, first pocket, 272, second pocket, 14, first roller, 24, second roller, 62, and middle spacer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, an asymmetric double-row self-aligning roller bearing for improving single axial bearing capacity comprises an outer ring 01 and an inner ring 02, wherein a retainer is arranged between the inner ring 02 and the outer ring 01, two rows of drum-shaped rollers are arranged on the retainer, the two rows of drum-shaped rollers are respectively a first roller 14 and a second roller 24, the axial length of the first roller 14 is greater than that of the second roller 24, and the diameter of one end of the first roller 14, which axially faces the second roller 24, is greater than that of the other end of the first roller 14; the axial height of the inner ring 02 is smaller than that of the outer ring 01, two rows of inner rolling paths which are distributed along the axial direction are arranged on the outer cylindrical surface of the inner ring 02, the two rows of inner rolling paths are respectively a first inner rolling path 21 matched with the first roller 14 and a second inner rolling path 22 matched with the second roller 24, a middle flange 23 which is fixedly integrated with the inner ring 02 is arranged between the first inner rolling path 21 and the second inner rolling path 22, and the other ends of the first inner rolling path 21 and the second inner rolling path 22 are not provided with flanges.
The retainer includes a first retainer 17 and a second retainer 27, both the first retainer 17 and the second retainer 27 are stamped retainers, a first pocket 171 for the first roller 14 to fit is provided at equal intervals on the circumference of the first retainer 17, the first pocket 171 is a full-locking pocket, the full-locking pocket is structured in the prior art, the upper opening of the pocket is smaller than the lower opening, the roller is locked in the pocket for one circle, a second pocket 272 for the second roller 24 to fit is provided at equal intervals on the circumference of the second retainer 27, the second pocket 272 is a point-locking pocket, the point-locking pocket is also structured in the prior art, as shown in fig. 4, one or more locking points for locking the roller are provided on the inner wall or above the opening of the pocket.
A movable middle spacer ring 62 is further arranged between the first inner raceway 21 and the second inner raceway 22 to improve the operation stability of the retainer at low speed.
Adopt the utility model provides an above-mentioned structure has improved the unipolar to bearing capacity of bearing, and the long service life of bearing is convenient for assemble.
The part of the utility model not detailed is prior art.
Claims (3)
1. The asymmetric double-row self-aligning roller bearing capable of improving the single axial bearing capacity comprises an outer ring (01) and an inner ring (02), a retainer is arranged between the inner ring (02) and the outer ring (01), two rows of drum-shaped rollers are arranged on the retainer, the two rows of drum-shaped rollers are respectively a first roller (14) and a second roller (24), the axial length of the first roller (14) is greater than that of the second roller (24), and the diameter of one end, facing the second roller (24), of the first roller (14) in the axial direction is greater than that of the other end, in the axial direction, of the first roller (14); the method is characterized in that: the axial height of the inner ring (02) is smaller than that of the outer ring (01), two rows of inner rolling ways which are distributed along the axial direction are arranged on the outer cylindrical surface of the inner ring (02), the two rows of inner rolling ways are respectively a first inner rolling way (21) matched with the first roller (14) and a second inner rolling way (22) matched with the second roller (24), a middle flange (23) which is fixedly integrated with the inner ring (02) is arranged between the first inner rolling way (21) and the second inner rolling way (22), and the other ends of the first inner rolling way (21) and the second inner rolling way (22) are not provided with flanges.
2. The asymmetric double-row self-aligning roller bearing with improved uniaxial bearing capacity of claim 1, wherein: the retainer comprises a first retainer (17) and a second retainer (27), wherein the first retainer (17) and the second retainer (27) are both stamping retainers, a first pocket (171) for assembling a first roller (14) is arranged on the circumference of the first retainer (17) in an equant mode, the first pocket (171) is a full-locking pocket, a second pocket (272) for assembling a second roller (24) is arranged on the circumference of the second retainer (27) in an equant mode, and the second pocket (272) is a point-locking pocket.
3. The asymmetric double-row self-aligning roller bearing with improved uniaxial bearing capacity of claim 1, wherein: and a movable middle spacer ring (62) is also arranged between the first inner raceway (21) and the second inner raceway (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139332.9U CN212003955U (en) | 2020-01-21 | 2020-01-21 | Asymmetric double-row self-aligning roller bearing capable of improving single axial bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139332.9U CN212003955U (en) | 2020-01-21 | 2020-01-21 | Asymmetric double-row self-aligning roller bearing capable of improving single axial bearing capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003955U true CN212003955U (en) | 2020-11-24 |
Family
ID=73420229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020139332.9U Active CN212003955U (en) | 2020-01-21 | 2020-01-21 | Asymmetric double-row self-aligning roller bearing capable of improving single axial bearing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003955U (en) |
-
2020
- 2020-01-21 CN CN202020139332.9U patent/CN212003955U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220929 Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: LUOYANG LYC BEARING Co.,Ltd. Patentee after: Luoyang Luoxi precision forging Heavy Industry Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Patentee after: Luoyang Luoxi precision forging Heavy Industry Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China Patentee before: Luoyang Luoxi precision forging Heavy Industry Co.,Ltd. |
|
| CP03 | Change of name, title or address |