CN114658759A - Bearing without retainer - Google Patents
Bearing without retainer Download PDFInfo
- Publication number
- CN114658759A CN114658759A CN202210200673.6A CN202210200673A CN114658759A CN 114658759 A CN114658759 A CN 114658759A CN 202210200673 A CN202210200673 A CN 202210200673A CN 114658759 A CN114658759 A CN 114658759A
- Authority
- CN
- China
- Prior art keywords
- bearing
- groove
- ring
- outer ring
- inner ring
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 17
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 235000019994 cava Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/361—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with cylindrical rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a bearing without a retainer, comprising: the bearing comprises a bearing inner ring and a bearing outer ring, wherein the bearing outer ring is coaxially limited at the outer side of the bearing inner ring, and a plurality of rolling bodies are arranged between the bearing inner ring and the bearing outer ring; the outer periphery of the bearing inner ring is provided with a plurality of first grooves along the axial direction, and/or the inner periphery of the bearing outer ring is provided with a plurality of second grooves along the axial direction; the rolling element is disposed in the first groove, and/or the rolling element is disposed in the second groove. According to the retainer-free bearing, the first groove or the second groove for mounting the rolling body is arranged on the outer side of the bearing inner ring or the inner side of the bearing outer ring to form the rolling path and the limiting structure of the rolling body, and the retainer is not required to be arranged independently, so that the bearing failure caused by the damage of the retainer is avoided.
Description
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to a retainer-free bearing without a retainer.
Background
The bearing is a common component in mechanical rotation, and the common bearing generally combines rolling elements and a retainer to form a rolling element assembly which is distributed in a raceway formed by an inner ring and an outer ring, and the retainer is used for isolating the rolling elements and retaining the rolling elements in the bearing. When the rolling bearing works, particularly when the rolling bearing is loaded in a complex and high-speed rotation mode, the retainer is subjected to large centrifugal force, impact and vibration, large sliding friction exists between the retainer and the rolling body, a large amount of heat is generated, the retainer fails as a result of combined action of the force and the heat, and the retainer is burnt and broken in a severe case, so that the bearing is damaged and fails.
Disclosure of Invention
The invention aims to provide a bearing without a retainer, which avoids the separate arrangement of the retainer by arranging a groove for installing a rolling body on the outer side of a bearing inner ring or the inner side of a bearing outer ring.
The invention firstly provides a bearing without a retainer, which comprises a bearing inner ring and a bearing outer ring, wherein the bearing outer ring is coaxially limited at the outer side of the bearing inner ring, a plurality of rolling bodies are arranged between the bearing inner ring and the bearing outer ring, wherein,
a plurality of first grooves are axially formed in the periphery of the bearing inner ring, and the rolling bodies are arranged in the first grooves; alternatively, the first and second electrodes may be,
and a plurality of second grooves are formed in the inner periphery of the bearing outer ring along the axial direction, and the rolling bodies are arranged in the second grooves.
According to one embodiment of the invention, the first grooves are uniformly distributed along the outer circumference of the bearing inner ring; or the second grooves are uniformly distributed along the inner periphery of the bearing outer ring.
According to an embodiment of the invention, the bearing according to claim 1, wherein the first groove is a semi-cylindrical groove; alternatively, the second groove is a semi-cylindrical groove.
According to one embodiment of the invention, the bearing inner race is provided with a plurality of recesses along the first groove surface; or a plurality of depressions are formed in the bearing outer ring along the surface of the second groove.
According to one embodiment of the invention, the bearing inner ring is provided with a first rib on one side.
According to one embodiment of the invention, second flanges are respectively arranged on two sides of the bearing outer ring.
According to one embodiment of the invention, the rolling elements are provided with sealing rings on both sides.
According to an embodiment of the present invention, the rolling element includes one of a cylindrical rolling element, a conical rolling element, and a spherical rolling element.
The positive progress effects of the invention are as follows:
according to the bearing without the retainer, the first groove for mounting the rolling body is arranged on the outer side of the bearing inner ring, or the second groove for mounting the rolling body is arranged on the inner side of the bearing outer ring, so that a rolling path and a limiting structure of the rolling body are formed, the retainer does not need to be arranged independently, and the bearing failure caused by the damage of the retainer is avoided. And, be provided with a plurality of caves on first recess surface, or be provided with a plurality of caves on second recess surface, can reduce the area of contact between rolling element and bearing inner race, the bearing outer lane to reduce friction.
Drawings
Fig. 1 is a longitudinal sectional view of a cage-less bearing of the present invention.
Fig. 2 is a transverse sectional view of embodiment 1 of the cage-less bearing of the present invention.
Fig. 3 is a transverse sectional view of embodiment 2 of the cage-less bearing of the present invention.
Reference numerals:
the bearing inner ring comprises a bearing inner ring 1, a first groove 11, a first flange 12, a bearing outer ring 2, a second groove 21, a second flange 22, a rolling body 3, a recess 4, a first sealing ring 51 and a second sealing ring 52.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that, where used, the terms upper, lower, left, right, front, back, top, bottom, positive, negative, clockwise, and counterclockwise in the following description are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object.
Fig. 1 shows a longitudinal sectional view of embodiment 1 of the present invention, and fig. 2 shows a transverse sectional view of embodiment 1 of the present invention. As shown in fig. 1 to 2, embodiment 1 of the present invention provides a cage-less bearing including a bearing inner ring 1, a bearing outer ring 2, and a plurality of rolling elements 3. A plurality of first grooves 11 are uniformly distributed on the peripheral surface of the bearing inner ring 1, and the first grooves 11 are semi-cylindrical grooves extending along the axial direction of the bearing inner ring 1. Each first groove 11 has a rolling element 3 mounted therein, and the depth of the first groove 11 is smaller than the diameter of the rolling element 3. The inner diameter of the bearing outer ring 2 is matched with the outer diameter of the bearing inner ring 1, the bearing outer ring 2 is sleeved on the bearing inner ring 1, and the rolling bodies 3 are limited in a roller path formed by the first groove 11 and the inner circumferential surface of the bearing outer ring 2.
In embodiment 1, a plurality of first grooves 11 are uniformly distributed on the outer circumferential surface of the bearing inner ring 1, so that the bearing inner ring is in a gear shape, and the rolling elements 3 are limited in the first grooves 11, so that it is no longer necessary to separately provide a retainer to space and limit the rolling elements 3 between the bearing inner ring 1 and the bearing outer ring 2, which is equivalent to that the retainer and the bearing inner ring 1 are combined together to form an integrated structure.
Fig. 3 shows a longitudinal sectional view of embodiment 2 of the present invention, and fig. 3 shows a transverse sectional view of embodiment 2 of the present invention. As shown in fig. 1 and 3, embodiment 2 of the present invention provides another cage-less bearing, which includes a bearing inner ring 1, a bearing outer ring 2, and a plurality of rolling bodies 3. A plurality of second grooves 21 are uniformly distributed on the inner circumferential surface of the bearing outer ring 2, and the second grooves 21 are semi-cylindrical grooves extending along the axial direction of the bearing outer ring 2. One rolling element 3 is mounted in each second groove 21, and the depth of the second groove 21 is smaller than the diameter of the rolling element 3. The outer diameter of the bearing inner ring 1 is matched with the inner diameter of the bearing outer ring 2, the bearing outer ring 2 is sleeved on the bearing inner ring 1, and the rolling bodies 3 are limited in a roller path formed by the outer peripheral surface of the bearing inner ring 1 and the second groove 21.
In embodiment 2, the plurality of second grooves 21 are uniformly distributed on the outer circumferential surface of the bearing outer ring 2, and the rolling elements 3 are limited in the second grooves 21, so that it is no longer necessary to separately provide a retainer to space and limit the rolling elements 3 between the bearing inner ring 1 and the bearing outer ring 2, which is equivalent to combining the retainer and the bearing outer ring 2 together to form an integral structure.
In the conventional bearing, a retainer is required to be separately arranged to perform the isolation and retention functions on the rolling bodies, and the structure of the retainer is generally thinner due to the limitation of spatial position. However, during operation of the bearing, the cage is subjected to high centrifugal forces, impacts and vibrations and is therefore easily deformed or broken. According to the retainer-free bearing, the first groove 11 is formed on the outer peripheral surface of the bearing inner ring 1, or the second groove 21 is formed on the inner peripheral surface of the bearing outer ring 2, so that the bearing inner ring 1 or the bearing outer ring 2 is in a gear structure, the rollers 3 can be limited between two adjacent teeth of the gear structure, the bearing inner ring 1 or the bearing outer ring 2 has the function of a retainer, the retainer does not need to be arranged independently, the bearing structure is simplified, and the structural strength of the bearing is improved.
In addition, the inner ring semi-cylindrical raceway in embodiment 1 and the outer ring semi-cylindrical raceway in embodiment 2 can be applied to both the ball rolling element and the cylindrical rolling element having the same diameter, and have the characteristics of both the ball rolling element and the cylindrical rolling element.
As shown in fig. 1, in some embodiments of the present invention, for the purpose of reducing the friction between the rolling elements 3 and the bearing inner ring 1, a plurality of recesses 4 may be provided on the surface of the first groove 11, specifically, for example, the recesses 4 formed by recessing downward along the surface of the first groove 11, to reduce the contact area between the rolling elements 3 and the first groove 11, thereby reducing the friction therebetween.
As shown in fig. 1, in some embodiments of the present invention, for the purpose of reducing the friction between the rolling elements 3 and the bearing outer ring 2, a plurality of recesses 4 may be provided on the surface of the second groove 21, specifically, for example, the recesses 4 formed by recessing downward along the surface of the second groove 21, to reduce the contact area between the rolling elements 3 and the second groove 21, thereby reducing the friction therebetween.
The plurality of recesses 4 are formed on the surface of the first groove 11 or the surface of the second groove 21, and in addition to the above-mentioned function of reducing friction by reducing the contact area, the recesses can be used for storing lubricating oil or lubricant, thereby further reducing friction.
In some embodiments of the present invention, as shown in fig. 1, one side of the bearing inner ring 1 extends radially outward to form a first rib 12, and the other side opposite to the first rib is not provided with a rib structure, so that the bearing inner ring 1 is formed into a structure that one side is provided with a rib and the other side is not provided with a rib, and the bearing can move in one direction in the axial direction and can be used as a free-end bearing.
In some embodiments of the present invention, as shown in fig. 1, the rolling elements 3 are restrained in the raceways by second retaining edges 22 respectively disposed on both sides of the bearing outer ring 2, so as to prevent the rolling elements from moving in the axial direction of the bearing. The second rib 22 adjacent to the first rib 12 may be integrally formed on the bearing outer ring 2, or may be detachably fixed on the bearing outer ring 2. The second flange 22, which is remote from the first flange 12, is detachably fixed to the bearing cup 2. The second flange 22 is of a circular structure, the diameter of the outer ring of the second flange is matched with the outer diameter of the bearing outer ring 2, and the inner diameter of the second flange is larger than or equal to the inner diameter of the bearing inner ring 1 and smaller than the outer diameter of the bearing inner ring 1. The second flanges 22 can be fixed on two sides of the bearing outer ring 2 by screws or buckles, when the bearing is assembled, the second flanges 22 close to the first flanges 12 are fixed on the bearing outer ring 2, then the bearing inner ring 1 and the rolling bodies 3 are loaded, and then the second flanges 22 far away from the first flanges 12 are fixed on the bearing outer ring 2 by screws or buckles to complete the assembly.
In some embodiments of the present invention, as shown in fig. 1, the two ends of the bearing are respectively provided with a sealing ring. The seal rings are provided at both ends of the rolling elements 3, for example, and specifically, for example, a first seal ring 51 is provided at an end of the rolling elements 3 close to the first rib 12, and a second seal ring 52 is provided at an end of the rolling elements 3 far from the first rib 12. The first sealing ring 51 is of a circular ring structure, the outer diameter of the first sealing ring 51 is matched with the inner diameter of the bearing outer ring 2, the inner diameter of the first sealing ring is matched with the outer diameter of the bearing inner ring 1, the outer periphery of the first sealing ring 51 is abutted against the inner surface of the bearing outer ring 2, the inner periphery of the first sealing ring 51 is abutted against the outer surface of the bearing inner ring 1, and therefore a space formed between the bearing inner ring 1 and the bearing outer ring 2 is sealed. The second sealing ring 52 is also of an annular structure, and the outer diameter of the second sealing ring 52 is matched with the inner diameter of the bearing outer ring 2, so that the outer periphery of the second sealing ring is abutted against the inner surface of the bearing outer ring 2; the inner diameter of the second seal ring 52 is larger than the inner diameter of the bearing inner ring 1 and smaller than the outer diameter of the bearing inner ring 1, and the second seal ring 52 is fixed on the end surface of the bearing inner ring 1 near the inner periphery thereof, specifically, for example, the second seal ring 52 is formed with a clamping portion near the inner periphery thereof along the axial extension, a matched annular clamping groove is arranged on the end surface of the bearing inner ring 1, and the clamping portion of the second seal ring 52 is clamped in the annular clamping groove on the bearing inner ring 1. By arranging the sealing rings at the two ends of the rolling body 3, a sealing space is formed among the bearing inner ring 1, the bearing outer ring 2, the first sealing ring 51 and the second sealing ring 52, and the lubricating oil in the raceway can be prevented from overflowing.
In some embodiments of the present invention, the rolling element 3 may be selected from one of a cylindrical rolling element, a conical rolling element, and a ball rolling element. Specifically, for example, the direction of the first groove 11 or the second groove 21 may be parallel to the axial direction of the bearing, and a cylindrical rolling element may be mounted in the first groove 11 or the second groove 21 to form a cylindrical roller bearing. The tapered roller bearing can also be formed by arranging a certain included angle between the direction of the first groove 11 or the second groove 21 and the axial direction of the bearing and installing a tapered rolling body in the first groove 11 or the second groove 21.
According to the bearing, the first groove 11 or the second groove 21 for mounting the rolling body is arranged on the outer side of the bearing inner ring 1 or the inner side of the bearing outer ring 2 to form the raceway and the limiting structure of the rolling body 3, and a retainer is not required to be arranged independently, so that the bearing failure caused by the damage of the retainer is avoided. Furthermore, the plurality of recesses 4 are provided on the surfaces of the first groove 11 and the second groove 21, so that the contact area between the rolling elements 3 and the bearing inner ring 1 and the bearing outer ring 2 can be reduced, thereby reducing friction.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A cage-less bearing, comprising: the bearing comprises a bearing inner ring and a bearing outer ring, the bearing outer ring is coaxially limited at the outer side of the bearing inner ring, a plurality of rolling bodies are arranged between the bearing inner ring and the bearing outer ring, wherein,
a plurality of first grooves are axially formed in the periphery of the bearing inner ring, and the rolling bodies are arranged in the first grooves; alternatively, the first and second electrodes may be,
and a plurality of second grooves are formed in the inner periphery of the bearing outer ring along the axial direction, and the rolling bodies are arranged in the second grooves.
2. The cage-less bearing of claim 1 wherein the first grooves are evenly distributed along the outer circumference of the bearing inner race; or the second grooves are uniformly distributed along the inner periphery of the bearing outer ring.
3. The cageless bearing of claim 1 wherein the first groove is a semi-cylindrical groove; alternatively, the second groove is a semi-cylindrical groove.
4. The cage-less bearing of claim 3 wherein the inner race is provided with a plurality of dimples along the first groove surface; or a plurality of depressions are formed in the bearing outer ring along the surface of the second groove.
5. The cage-less bearing of claim 1 wherein the bearing inner race is provided with a first rib on one side.
6. The cageless bearing of claim 1 wherein the bearing outer race is provided with second ribs on each side.
7. The cageless bearing of claim 1 wherein the rolling elements are provided with sealing rings on either side.
8. The cageless bearing of claim 1, wherein the rolling elements comprise one of cylindrical rolling elements, conical rolling elements, and spherical rolling elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200673.6A CN114658759A (en) | 2022-03-03 | 2022-03-03 | Bearing without retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210200673.6A CN114658759A (en) | 2022-03-03 | 2022-03-03 | Bearing without retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114658759A true CN114658759A (en) | 2022-06-24 |
Family
ID=82027747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210200673.6A Pending CN114658759A (en) | 2022-03-03 | 2022-03-03 | Bearing without retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114658759A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241915Y (en) * | 2008-07-10 | 2009-05-20 | 邹建军 | Rolling bearing for guide rail |
| JP2012215263A (en) * | 2011-04-01 | 2012-11-08 | Ntn Corp | Cylindrical roller bearing |
| CN106151265A (en) * | 2016-08-24 | 2016-11-23 | 何泽旭 | A kind of multiple row is without the full ball self-aligning bearing of retainer |
| CN208185213U (en) * | 2018-02-27 | 2018-12-04 | 浙江翔宇密封件有限公司 | A kind of shockproof bearing of automobile current generator |
| CN209671407U (en) * | 2019-02-19 | 2019-11-22 | 镇江宝瑞轴承有限公司 | A kind of single-row wear-resisting rolling bearing |
| CN215720215U (en) * | 2021-09-16 | 2022-02-01 | 中海石油(中国)有限公司湛江分公司 | Dynamic pressure rolling-sliding composite bearing for sump oil pump |
-
2022
- 2022-03-03 CN CN202210200673.6A patent/CN114658759A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241915Y (en) * | 2008-07-10 | 2009-05-20 | 邹建军 | Rolling bearing for guide rail |
| JP2012215263A (en) * | 2011-04-01 | 2012-11-08 | Ntn Corp | Cylindrical roller bearing |
| CN106151265A (en) * | 2016-08-24 | 2016-11-23 | 何泽旭 | A kind of multiple row is without the full ball self-aligning bearing of retainer |
| CN208185213U (en) * | 2018-02-27 | 2018-12-04 | 浙江翔宇密封件有限公司 | A kind of shockproof bearing of automobile current generator |
| CN209671407U (en) * | 2019-02-19 | 2019-11-22 | 镇江宝瑞轴承有限公司 | A kind of single-row wear-resisting rolling bearing |
| CN215720215U (en) * | 2021-09-16 | 2022-02-01 | 中海石油(中国)有限公司湛江分公司 | Dynamic pressure rolling-sliding composite bearing for sump oil pump |
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