CN108869550B - Combined retainer type roller bearing - Google Patents
Combined retainer type roller bearing Download PDFInfo
- Publication number
- CN108869550B CN108869550B CN201810906869.0A CN201810906869A CN108869550B CN 108869550 B CN108869550 B CN 108869550B CN 201810906869 A CN201810906869 A CN 201810906869A CN 108869550 B CN108869550 B CN 108869550B
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- Prior art keywords
- groove
- cage
- shape
- roller
- roller bearing
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
-
- 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
- F16C33/38—Ball cages
- F16C33/41—Ball cages comb-shaped
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a combined retainer type roller bearing, which comprises a bearing outer ring (1), rollers (2), a bearing inner ring (3), a first retainer (4) and a second retainer (5), wherein the rollers (2) and the first retainer (4) are positioned between the bearing outer ring and the bearing inner ring (3), the rollers (2) are positioned on the radial outer side of the first retainer (4) and are separated by the first retainer (4), and the second retainer is positioned on two sides of the rollers (2) in the axial direction of the roller bearing.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a combined retainer type roller bearing.
Background
The bearing is an important part in modern mechanical equipment, can support a mechanical rotating body, reduces friction coefficient in the motion process of the mechanical rotating body and ensures the rotation precision of the mechanical rotating body. However, in the prior art, when the bearing is used, on one hand, when a large load is borne, the rollers tend to be separated from the inner ring and the outer ring of the bearing in the axial direction, and on the other hand, when the bearing often bears the load with unstable axial fluctuation, the rollers between the inner ring and the outer ring of the bearing rotate around the axis of the bearing in an unstable manner, so that the bearing is damaged easily due to a small long-time working state, the rollers are separated, and the service life of the bearing is seriously influenced; in addition, the bearing cage and the rollers which are commonly used in the prior art are too tightly attached to easily block the rotation of the rollers, and the rollers cannot be ensured to roll along the preset track when being too loose.
Disclosure of Invention
The invention aims to solve the technical problems that; in order to overcome the defects and shortcomings in the prior art, the invention provides a combined retainer type roller bearing.
The technical scheme adopted for solving the technical problems is as follows: a combination cage type roller bearing comprising a bearing outer ring, a roller, a bearing inner ring, a first cage, and a second cage, wherein the roller and the first cage are located between the bearing outer ring and the bearing inner ring, and the roller is located radially outside of the first cage and is separated by the first cage, and the second cage is located at both sides of the roller in an axial direction of the roller bearing; the method is characterized in that: the second retainer comprises an annular inner support close to the roller and an annular outer support far away from the roller, a plurality of joint parts pointing to the roller are arranged on the annular inner support in an equidistant protruding mode in the circumferential direction, each joint part comprises an inner side face located in the radial inner portion of the roller bearing, an outer side face located in the radial outer portion of the roller bearing, and a joint face used for connecting the inner side face and the outer side face and being jointed with the roller, a first groove and a second groove are formed in the center of each joint part, the first groove and the second groove are respectively arranged in a long shape, the second groove is located on two sides of the first groove, the root of the second groove is arranged in a curve shape, the curve shape is composed of an inner side line shape close to the first groove, an outer side line shape far away from the first groove and a middle line shape connecting the inner side line shape and the outer side line shape, and the root of the first groove is arranged in a round angle shape.
Further, the inner side surface and the outer side surface are arc surfaces, the inner side surface is an arc surface of the same first circle, the outer side surface is an arc surface of the same second circle, and the first circle and the second circle are coincident with the radial center of the bearing.
Further, the joint surface is arranged in a circular arc shape, and the circular arc shape of the joint surface is matched with the spherical diameter of the roller.
Further, in the axial direction of the composite cage roller bearing, the depth of each of the first grooves is greater than the depth of each of the second grooves.
Further, in the radial direction of the composite cage roller bearing, the width of each of the first grooves is larger than the width of each of the second grooves.
Further, the inner line shape and the outer line shape are selected as circular arc lines, the middle line shape is selected as a straight line, and the radius of the circular arc line of the outer line shape is larger than that of the circular arc line of the inner line shape.
Further, the inner linear shape and the outer linear shape are parabolic, the middle linear shape is a straight line, and the opening of the parabolic of the outer linear shape is larger than that of the parabolic of the inner linear shape.
Further, the annular outer support is located inside the annular hole of the annular inner support and extends out in the direction away from the roller, the annular outer support is supported on the annular inner support through a plurality of connecting ribs, and a lightening hole is formed between two adjacent connecting ribs.
The invention has the beneficial effects that;
(1) By adopting the structure, the rollers rotate in the tracks defined by the first retainer and the second retainers at the two sides, the roller is prevented from falling off, the damage to the rollers caused by external force can be avoided even under heavy load, and the service life of the bearing is prolonged.
(2) The joint part contacted with the roller is provided with an arc surface jointed with the roller and a first groove and a second groove with gaps between the arc surface and the roller, so that the situation that the roller is easily blocked from rotating due to too tight fit between the bearing retainer and the roller is avoided, and the roller cannot roll along a preset track due to too loose fit is avoided.
(3) The root curve of the second groove is composed of three sections of an inner line shape, an outer line shape and a middle line shape, so that lubricating oil which is wrongly entered into the first groove and the second groove can be attached to the surface of the roller along with the rotation of the roller and the retainer and smoothly discharged.
Drawings
FIG. 1 is a schematic view of a composite cage roller bearing of the present invention;
FIG. 2 is a schematic view of the internal structure of a composite cage roller bearing of the present invention;
FIG. 3 is a schematic view of the inside construction of a second cage of a composite cage roller bearing according to the present invention;
FIG. 4 is an enlarged view of the junction of a second cage of a composite cage roller bearing of the present invention;
FIG. 5 is a schematic view of the outer structure of a second cage of a composite cage roller bearing according to the present invention;
fig. 6 is a schematic view of the structure of a first cage of a composite cage roller bearing according to the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1 to 6, a combined cage type roller bearing comprises a bearing outer ring 1, rollers 2, a bearing inner ring 3, a first cage 4, and a second cage 5, wherein the rollers 2 and the first cage 4 are located between the bearing outer ring and the bearing inner ring 3, and the rollers 2 are located radially outside of the first cage 4 and are separated by the first cage 4, and the second cage is located at both sides of the rollers 2 in an axial direction of the roller bearing; the second cage 5 includes an annular inner bracket 52 near the roller 2 and an annular outer bracket 53 far from the roller 2, the annular inner bracket 52 is provided with a plurality of joint portions 51 directed toward the roller 2 at equal intervals in the circumferential direction, the joint portions 51 include an inner side surface 511 located radially inward of the roller bearing, an outer side surface 512 located radially outward of the roller bearing, and a joint surface 513 connecting the inner side surface 511 and the outer side surface 512 and engaging with the roller 2, a first groove 514 and a second groove 515 are provided in the center of the joint portions 51, the first groove 514 and the second groove 515 are provided in a long strip shape, respectively, and the second groove 515 is located on both sides of the first groove 514, the root portion of the second groove 515 is provided in a curved shape, and the curved shape is composed of an inner side line 515a near the first groove 514, an outer side line 515c far from the first groove 514, and an intermediate line 515b connecting the inner side line 515a and the outer side line 515c, and the root portion of the first groove 514 is provided in a rounded shape. By adopting the structure, the rollers rotate in the tracks defined by the first retainer and the second retainers at the two sides, so that the rollers are prevented from falling off, the damage to the rollers caused by external force can be avoided even under heavy load, and the service life of the bearing is prolonged; the joint part contacted with the roller is provided with an arc surface jointed with the roller and a first groove and a second groove with gaps between the arc surface and the roller, so that the situation that the rotation of the roller is easily blocked due to too tight fit between the bearing retainer and the roller is avoided, and the situation that the roller rolls along a preset track due to too loose fit is avoided; the root curve of the second groove is composed of three sections of an inner line shape, an outer line shape and a middle line shape, so that lubricating oil which is wrongly entered into the first groove and the second groove can be attached to the surface of the roller along with the rotation of the roller and the retainer and smoothly discharged.
Specifically, the inner side surface 511 and the outer side surface 512 are arc surfaces, the inner side surface 511 is an arc surface of the same first circle, the outer side surface 512 is an arc surface of the same second circle, and the first circle and the second circle coincide with the radial center of the bearing, so that the inner side surface 511 and the outer side surface 512 of the joint portion 51 can be directly formed by one-step processing, and the processing is convenient.
Specifically, the joint surface 513 is provided in a circular arc shape, and the circular arc shape of the joint surface 513 is matched with the spherical diameter of the roller 2, so that the roller 2 rolls along a predetermined track under the limitation of the circular arc shape of the joint surfaces 513 on both sides, thereby improving the bearing use effect and service life.
As shown in fig. 4, in the axial direction of the composite cage roller bearing, the depth of each first groove 514 is greater than the depth of each second groove 515; in the radial direction of the combined retainer type roller bearing, the width of each first groove 514 is larger than that of each second groove 515, the first grooves are positioned at the spherical center position of the roller 2, and the second grooves are respectively positioned at two sides of the spherical center position of the roller 2, so that more lubricating oil which enters the first grooves by mistake can be contained in the first grooves, and the lubricating oil is adhered to the surface of the roller along with the rotation of the roller and the retainer and is smoothly discharged.
Specifically, the inner line 515a and the outer line 515c are selected from arc lines, the middle line 515b is selected from straight lines, and the radius of the arc line of the outer line 515c is larger than that of the arc line of the inner line 515a, so that the lubricating oil is more easily attached to the arc line of the outer line 515c during rotation, and is conveniently attached to the surface of the roller 2 along with rotation.
Specifically, the inner line 515a and the outer line 515c are parabolic, the middle line 515b is a straight line, and the opening of the parabolic of the outer line 515c is larger than that of the parabolic of the inner line 515a, so that the parabolic shape is more in line with the movement track of the lubricant in rotation, and the lubricant is more easily attached to the arc line of the outer line 515c in rotation, thereby facilitating the attachment of the lubricant to the surface of the roller 2 along with rotation.
Specifically, the annular outer bracket 53 is located inside the annular hole of the annular inner bracket 52 and extends in a direction away from the roller 2, the annular outer bracket 53 is supported on the annular inner bracket 52 through a plurality of connecting ribs 531, weight reducing holes 532 are formed between two adjacent connecting ribs 531, and weight and material saving and cost saving are achieved and space simplification are achieved on the basis of ensuring the strength of the annular outer bracket 53 and the annular inner bracket 52.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. A combined cage type roller bearing comprising a bearing outer ring (1), rollers (2), a bearing inner ring (3), a first cage (4) and a second cage (5), wherein the rollers (2) and the first cage (4) are positioned between the bearing outer ring and the bearing inner ring (3), and the rollers (2) are positioned radially outside the first cage (4) and separated by the first cage (4), and the second cage is positioned on both sides of the rollers (2) in the axial direction of the roller bearing; the method is characterized in that: the second cage (5) comprises an annular inner bracket (52) close to the roller (2) and an annular outer bracket (53) far away from the roller (2), a plurality of joint parts (51) pointing to the roller (2) are arranged on the annular inner bracket (52) in a circumferentially equidistant protruding mode, the joint parts (51) comprise inner side surfaces (511) positioned on the radial inner part of the roller bearing, outer side surfaces (512) positioned on the radial outer part of the roller bearing, and joint surfaces (513) used for connecting the inner side surfaces (511) and the outer side surfaces (512) and being jointed with the roller (2), a first groove (514) and a second groove (515) are formed in the center of the joint parts (51), the first groove (514) and the second groove (515) are respectively arranged in an elongated shape, roots of the second groove (515) are arranged in a curve shape, and the roots of the second groove (515) are arranged on two sides of the first groove (514), and the roots of the second groove (515) are arranged in a curve shape, and the middle groove (515) is formed by connecting the inner side surfaces (514 a) far away from the inner side (514 a) of the linear shape and the linear shape (515 a) is formed by the linear shape (515) and the linear shape (515) is formed by connecting the linear shape (515 a); the inner side surface (511) and the outer side surface (512) are arc surfaces, the inner side surface (511) is an arc surface of the same first circle, the outer side surface (512) is an arc surface of the same second circle, and the first circle and the second circle are overlapped with the radial center of the bearing; the joint surface (513) is provided in a circular arc shape, and the circular arc shape of the joint surface (513) matches the spherical diameter of the roller (2).
2. A composite cage roller bearing according to claim 1, wherein: in the axial direction of the composite cage roller bearing, the depth of each first groove (514) is greater than the depth of each second groove (515).
3. A composite cage roller bearing according to claim 1, wherein: the width of each first groove (514) is greater than the width of each second groove (515) in the radial direction of the combined cage roller bearing.
4. A composite cage roller bearing according to claim 1, wherein: the inner line shape (515 a) and the outer line shape (515 c) are circular arc lines, the middle line shape (515 b) is a straight line, and the radius of the circular arc line of the outer line shape (515 c) is larger than that of the circular arc line of the inner line shape (515 a).
5. A composite cage roller bearing according to claim 1, wherein: the inner line shape (515 a) and the outer line shape (515 c) are parabolic, the middle line shape (515 b) is a straight line, and the opening of the parabolic line shape of the outer line shape (515 c) is larger than that of the parabolic line shape of the inner line shape (515 a).
6. A composite cage roller bearing according to claim 1, wherein: the annular outer support (53) is located inside an annular hole of the annular inner support (52) and extends in a direction away from the roller (2), the annular outer support (53) is supported on the annular inner support (52) through a plurality of connecting ribs (531), and a lightening hole (532) is formed between two adjacent connecting ribs (531).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906869.0A CN108869550B (en) | 2018-08-10 | 2018-08-10 | Combined retainer type roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906869.0A CN108869550B (en) | 2018-08-10 | 2018-08-10 | Combined retainer type roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869550A CN108869550A (en) | 2018-11-23 |
| CN108869550B true CN108869550B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810906869.0A Active CN108869550B (en) | 2018-08-10 | 2018-08-10 | Combined retainer type roller bearing |
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| CN (1) | CN108869550B (en) |
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| CN108869550A (en) | 2018-11-23 |
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