CN215293280U - Bearing device - Google Patents
Bearing device Download PDFInfo
- Publication number
- CN215293280U CN215293280U CN202121737727.XU CN202121737727U CN215293280U CN 215293280 U CN215293280 U CN 215293280U CN 202121737727 U CN202121737727 U CN 202121737727U CN 215293280 U CN215293280 U CN 215293280U
- Authority
- CN
- China
- Prior art keywords
- bearing device
- bearing
- outer member
- outer ring
- outer diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a bearing device possesses when using because of being fixed and the cylindric outside part that can't rotate, bears the radial force of unidirectional direction and in the carriage area that the outside part produced because of the bearing device, is formed with along the axial in the certain extent of the external diameter face of outside part from one side terminal surface of outside part link up to the deletion portion of opposite side terminal surface. When the outer part is stressed, the existence of the missing part can allow the outer part to have certain deformation, and the deformation can relieve the contact stress of the raceway surface of the outer part, so that the service life of the bearing is prolonged.
Description
Technical Field
The utility model relates to a bear radial load's bearing arrangement at least.
Background
A typical rolling bearing includes an outer ring as an outer member, an inner ring as an inner member, a plurality of rolling elements rollably interposed between the outer ring and the inner ring, and a cage for holding the plurality of rolling elements. Under the working condition that the inner ring rotates and the outer ring is fixed and the bearing bears the radial force in a single direction, the bearing area of the outer ring raceway surface is small and fixed, so that the bearing area of the outer ring raceway surface is most prone to fatigue, especially the position of the outer ring raceway surface facing the stress direction. Therefore, it is necessary to relieve the contact stress between the outer ring raceway surface and the rolling elements, thereby extending the service life of the bearing.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a bearing device capable of alleviating the contact stress of an outer ring raceway surface, thereby prolonging the service life of a bearing.
Specifically, according to the 1 st aspect of the present invention, there is provided a bearing device comprising a cylindrical outer member which is fixed so as not to rotate in use, wherein a missing portion which penetrates from one end surface to the other end surface of the outer member in the axial direction is formed in a certain range of an outer diameter surface of the outer member in a bearing region which is generated in the outer member by the bearing device receiving a unidirectional radial force.
According to claim 2 of the present invention, in the aspect 1, the missing portion is a flat surface formed by cutting out a part of an outer diameter surface of the outer member.
According to claim 3 of the present invention, in the structure according to claim 1, the missing portion is a curved surface formed by cutting out a part of an outer diameter surface of the outer member.
According to the 4 th aspect of the present invention, in the 3 rd aspect, the curved surface includes a concentric arc surface having a diameter smaller than the outer diameter of the outer member and concentric with the outer member, and a connecting surface respectively connected to the outer diameter surface of the outer member from both ends of the concentric arc surface.
According to the 5 th aspect of the present invention, on the basis of the 3 rd aspect, the curved surface is a curved surface having a diameter larger than the outer diameter of the outer member.
According to claim 6 of the present invention, in addition to the aspect 1, the missing portion is a portion thinner than other portions thickened by the thickening process in the outer diameter surface of the outer member.
According to claim 7 of the present invention, in addition to any one of claims 2 to 6, the arc degree of the missing portion in the outer diameter surface of the outer member is 0 to 180 degrees.
Effect of the utility model
According to the utility model discloses a bearing device, through in the bearing area of the outside part of bearing device, form along the axial in the certain limit of the external diameter face of outside part from one side terminal surface of outside part link up to the deletion portion of opposite side terminal surface, when outside part atress, because the existence of this deletion portion can allow the outside part to have certain deformation, so can alleviate the contact stress of outside part raceway surface through this deformation to the life of extension bearing.
Drawings
Fig. 1 is a schematic view showing a stress state and a missing portion on an outer ring in a case where a bearing device according to the present invention is mounted on an axle box.
Fig. 2 is a schematic view showing the shape of a missing portion in the outer ring of the bearing device according to the present invention.
Fig. 3 is a schematic view showing the shape of a missing portion in the outer ring of the bearing device according to the present invention.
Fig. 4 is a schematic view showing the shape of a missing portion in the outer ring of the bearing device according to the present invention.
Fig. 5 is a schematic view showing the shape of a missing portion in the outer ring of the bearing device according to the present invention.
Description of the reference numerals
1. Axle box, 2, outer ring, 3, missing portion, H: deletion height, α: deletion angle, 4: plane, 5: curved surface, 6: concentric arc, 7: connecting surface, S: an imaginary circle.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, the proportions of the components may be different, and some components may be omitted.
In the following description, embodiments of the present invention will be described by taking as an example a rolling bearing that receives at least a radial load. The utility model discloses can be applicable to ball bearing, roller bearing, bearing etc. specifically. Further, the present invention can be applied to a sliding bearing, but cannot be applied to a thrust bearing. Moreover, the utility model is suitable for an effective play is greater than 0 bearing.
Hereinafter, the bearing device according to the present embodiment will be described with reference to the drawings.
Fig. 1 is a schematic view showing a stress state and a missing portion on an outer ring in a case where a bearing device according to the present invention is mounted on an axle box. Fig. 2 to 5 are schematic views showing the shape of a missing portion in the outer ring of the bearing device according to the present invention.
A typical rolling bearing includes an outer ring as an outer member, an inner ring as an inner member, a plurality of rolling elements rollably interposed between the outer ring and the inner ring, and a cage for holding the plurality of rolling elements, and the outer ring and the inner ring are both cylindrical, that is, annular in cross section, but in fig. 1, the inner ring, the rolling elements, and the cage are not shown.
In a condition where the outer ring 2 of the rolling bearing is mounted on the axle box 1 as shown in fig. 1 (that is, the inner ring is rotated and the outer ring is fixed), and the bearing receives a radial force in a single direction, since the bearing area of the raceway surface of the outer ring 2 is small and fixed, the bearing area of the raceway surface of the outer ring 2 is most likely to suffer from fatigue, particularly, at a position facing the raceway surface of the outer ring in the force receiving direction.
In contrast, in the bearing region of the outer ring 2 of the bearing device, the missing portion 3 that penetrates from the end surface on one side to the end surface on the other side of the outer ring 2 in the axial direction is formed within a certain range of the outer diameter surface of the outer ring 2, and when the outer ring 2 is subjected to a force, the outer ring 2 can be allowed to elastically deform to some extent due to the existence of the missing portion 3, so that the stress distribution of the raceway surface of the outer ring 2 is changed, the stress applied to the bearing region is reduced, and the service life of the bearing is prolonged.
In addition, the minimum limit value and the maximum limit value of the range of the bearing area under the working condition of unidirectional stress are respectively 0-180 degrees, so the radian occupied by the deletion part 3 in the outer diameter surface of the outer ring 2, namely the deletion angle alpha can be properly selected within 0-180 degrees. The missing height H is not particularly limited, and may be appropriately selected according to the operating condition of the bearing device.
As shown in fig. 2, the missing portion 3 may be a flat surface 4 formed by cutting out a part of the outer diameter surface of the outer ring 2. This makes it possible to easily machine the missing portion 3.
The missing portion 3 may be a curved surface 5 formed by cutting out a part of the outer diameter surface of the outer ring 2. Specifically, as shown in fig. 3, a partial circle concentric with the outer ring may be formed in a partial region of the outer diameter surface of the outer ring 2, and the intersection may be connected by a tangent line or other shape. That is, the curved surface 5 may have a concentric arc surface 6 having a diameter smaller than the outer diameter of the outer ring 2 and concentric with the outer ring 2 and a connection surface 7 connected to the outer diameter surface of the outer ring 2 from both ends of the concentric arc surface 6 in the circumferential direction, and the connection surface 7 may be in contact with the concentric arc surface 6 and the outer diameter surface of the outer ring 2, or may have another shape. This increases the achievable range of the deletion angle α and increases the degree of freedom in controlling the deletion height H. It is also possible to cut out a part of the outer ring 2 with an imaginary circle S having a diameter larger than that of the outer ring 2, that is, to make the curved surface 5 a curved surface having a diameter larger than the outer diameter of the outer ring 2, as shown in fig. 4. Therefore, the eccentric processing can be easily realized, and the phenomenon of stress concentration of the outer diameter surface is not easy to occur.
As shown in fig. 5, other portions of the outer diameter surface of the outer ring 2 other than the missing portion 3 may be thickened by a processing (thickening) such as plating, and the missing portion 3 may be a relatively thin portion because plating or the like is not performed. Therefore, the achievable range of the deletion angle alpha is large, the deletion angle alpha is easily realized through film coating processing and the like, and the phenomenon of stress concentration of the outer diameter surface is not easy to occur.
As described above, according to the present embodiment, since the outer ring is formed with the missing portion penetrating from the one end surface to the other end surface of the outer ring in the axial direction within a predetermined range of the outer diameter surface of the outer ring, when the outer member receives a force, the outer ring is allowed to deform to a predetermined extent due to the missing portion, and therefore, the contact stress between the raceway surface of the outer ring and the rolling elements can be relieved by the deformation, and the service life of the bearing can be prolonged.
In the above embodiment, the rolling bearing including the outer ring, the inner ring, the rolling elements, and the cage has been described, but the bearing device may include at least two members of the outer ring and the rolling elements (the sliding bearing is the inner ring), and does not include the bearing without the outer ring.
The above description has been given only for the details of the preferred embodiments of the present invention. Various modifications and additions may be made to the described embodiments or may be substituted in a similar manner by those skilled in the art, and the technical scope of the present invention is to be determined by the claims, and the meaning equivalent to the description of the claims and all modifications within the scope thereof are intended to be included.
Claims (7)
1. A bearing device comprising a cylindrical outer member which is fixed so as not to rotate when in use,
in a bearing region of the outer member generated by the bearing device receiving a unidirectional radial force, a missing portion penetrating from one end surface to the other end surface of the outer member in the axial direction is formed in a certain range of an outer diameter surface of the outer member.
2. The bearing device of claim 1,
the missing portion is a flat surface formed by cutting out a part of the outer diameter surface of the outer member.
3. The bearing device of claim 1,
the missing portion is a curved surface formed by cutting a part of the outer diameter surface of the outer member.
4. The bearing device of claim 3,
the curved surface includes a concentric arc surface having a diameter smaller than the outer diameter of the outer member and concentric with the outer member, and connecting surfaces respectively connected to the outer diameter surface of the outer member from both ends of the concentric arc surface.
5. The bearing device of claim 3,
the curved surface is an arc surface having a diameter larger than an outer diameter of the outer member.
6. The bearing device of claim 1,
the missing portion is a portion of the outer diameter surface of the outer member that is thinner than other portions thickened by the thickening process.
7. Bearing device according to one of claims 2 to 6,
the arc of the missing part in the outer diameter surface of the outer member is 0 to 180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737727.XU CN215293280U (en) | 2021-07-28 | 2021-07-28 | Bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737727.XU CN215293280U (en) | 2021-07-28 | 2021-07-28 | Bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215293280U true CN215293280U (en) | 2021-12-24 |
Family
ID=79525115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121737727.XU Active CN215293280U (en) | 2021-07-28 | 2021-07-28 | Bearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215293280U (en) |
-
2021
- 2021-07-28 CN CN202121737727.XU patent/CN215293280U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7922396B2 (en) | Double row self-aligning roller bearing and main shaft support structure of wind power generator | |
| CN100455833C (en) | Roller bearing | |
| GB2181498A (en) | Two row rolling bearings | |
| US20170284467A1 (en) | Rolling Bearing | |
| US20030021506A1 (en) | Angular contact ball-bearing cage with lubricant pockets | |
| US11181149B2 (en) | Rolling bearing | |
| US20160123385A1 (en) | Rolling bearing | |
| US11339827B2 (en) | Load-variable rolling bearing and rolling element for the same | |
| CN215293280U (en) | Bearing device | |
| US11149787B2 (en) | Thrust roller bearing | |
| EP2988010B1 (en) | Angular ball bearing cage | |
| CN108035971A (en) | Unilateral bearing | |
| CN216666229U (en) | Angular contact self-aligning roller bearing | |
| US3362761A (en) | Ball bearings | |
| CN101578454B (en) | Tapered roller bearing | |
| CN211501282U (en) | Rod end joint bearing structure capable of improving swing angle | |
| JP2006112555A (en) | Roller bearing with aligning ring | |
| US10883537B2 (en) | Tapered roller bearing | |
| JP3892213B2 (en) | 4-point contact ball bearing | |
| CN107228130B (en) | Spherical roller bearing | |
| JP2016211601A (en) | Seal structure of swivel bearing and swivel bearing | |
| KR102504893B1 (en) | A Thrust Rolling Bearing having Variable Rated Capacity | |
| EP4227548A1 (en) | Angular contact self-aligning roller bearing | |
| CN210769856U (en) | Bearing retainer and ball bearing | |
| CN203189518U (en) | Conical roller bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |