CN101235850A - Combination type hollow bearing roller - Google Patents
Combination type hollow bearing roller Download PDFInfo
- Publication number
- CN101235850A CN101235850A CNA2007100060835A CN200710006083A CN101235850A CN 101235850 A CN101235850 A CN 101235850A CN A2007100060835 A CNA2007100060835 A CN A2007100060835A CN 200710006083 A CN200710006083 A CN 200710006083A CN 101235850 A CN101235850 A CN 101235850A
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- Prior art keywords
- sleeve
- bearing
- bearing roller
- roller
- hollow bearing
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Abstract
The invention relates to a combined hollow bearing roller, wherein an expanding sleeve 1 is arranged in a sleeve 2, the sleeve 2 is of a cylindrical shape or a circular cone shape, an inner cavity is of an inner frustum shape, the expanding sleeve 1 is of a frustum shape, and the inner cavity is of an inner frustum shape. When the expanding sleeve 1 is forced to axially move from a large diameter end to a small diameter end through applying an axial force to the expanding sleeve 1 and the sleeve 2, because the incremental launching effect of a conical surface, the outer ring diameter of the sleeve 2 is evenly increased, thereby achieving the purpose of eliminating the assembly gap of a bearing and increasing the precision grade. The combined hollow bearing roller has four advantages of saving materials, high limiting rotational speed, high assembly accuracy and vibration reduction anti-noise and the like.
Description
Technical field
The present invention relates to a kind of bearing element, especially a kind of combination type hollow bearing roller that replaces the solid roller of conventional rolling bearing.
Background technique
Rolling bearing is a kind of major criterion parts of supporting rotating shaft base part, and its roller member of traditional rolling bearing generally adopts solid roller, facts have proved, there is following defective in the solid roller of existing rolling bearing:
1, the quality of solid construction roller is big, and therefore, the centrifugal inertia force that produces when bearing runs up is big, often causes limit speed on the low side;
2, bearing steel material consumption is on the high side, and cost of material is higher;
3, the high-precision bearing roller is made difficulty, causes the precision bearing quantitative proportion of high added value on the low side;
4, traditional plain bearing precision is low, and the gap between its rolling element is bigger, thereby causes vibration and noise in the running big.
Engineering practice shows further that then the accuracy of manufacturing of rolling element is one of key factor that influences the bearing assembly precision.And unique assurance of rolling element outside dimension size is handled or the degradation use in case its size less than permitted value, just can only be done to scrap from accuracy of manufacturing.So according to a conventional method, want to improve the grade of accuracy of rolling bearing, must improve the accuracy of manufacturing of each element of bearing, but what follow that precision improves is the prolongation of process time and the decline of output, cause the rapid increase of manufacture cost therefrom.
Summary of the invention
The technical problem to be solved in the present invention is, above-mentioned defective at the conventional roller bearing, a kind of combination type hollow bearing roller that can overcome above-mentioned defective is provided, and this bearing roller can be by improving the transmission performance that its structure and material and combination thereof improve rolling bearing.
Technical solution of the present invention is, described combination type hollow bearing roller referring to Fig. 1～2, has sleeve 2, in the sleeve 2 coaxial lines be set with one with the tubular expansion set 1 of sleeve 2 inner chambers size coupling.Described sleeve 2 cylindrical or truncated cones, its inner chamber is interior taper type; Described expansion set 1 is the taper type with sleeve 2 inner chambers size coupling, and its inner chamber also is interior taper type.
The combination type hollow bearing roller of the present invention of said structure promptly is that the hollow tubular thing that roller is made inside and outside two-layer coaxial line suit is expansion set 1 and sleeve 2.In general, its outer snare adopts the Bearing Steel manufacturing, and its inner chamber is a female cone platform shape, and its internal layer snare then adopts other metallic material such as the cast iron manufacturing, and its inner chamber also is a female cone platform shape.Inside and outside two snares are that expansion set 1 and sleeve 2 coaxial lines closely are sleeved on together, by being that expansion set 1 and sleeve 2 axially apply equal and opposite in direction, axial force that direction is opposite respectively to the inside and outside snare of roller, when forcing internal layer expansion set 1 to move axially toward a small-bore end by heavy caliber one end, thrusting action because of the internal layer conical surface, force the outside diameter of sleeve 2 evenly to become big, eliminate the bearing fit up gap thereby reach, improve the purpose of grade of accuracy.
The invention has the beneficial effects as follows:
1, bearing roller is made hollow-core construction and help weight reduction, reduce centrifugal inertia force, improve the limit speed of bearing;
2, the internal layer expansion set adopts different metallic material to make respectively with outer layer sleeve, has changed the mechanical characteristic of roller.Adopt the manufacturing of absorbing metalloid material as the internal layer expansion set, also can absorb vibrational energy, reduce the operation noise;
3, the internal layer expansion set adopts cheap metallic material, and only the outer layer sleeve Bearing Steel of drawing materials can be saved expensive Bearing Steel, reduces cost of material.
4, internal layer expansion set and outer layer sleeve adopt the cone match structure, when regulating both axial displacement, because the thrusting action of the internal layer conical surface forces the outside diameter of outer layer sleeve evenly to become big, eliminate the bearing fit up gap thereby can reach, improve the purpose of grade of accuracy.
As known from the above, the present invention has four big advantages such as the material of saving, limit speed height, assembly precision height, vibration damping anti-noise.
Description of drawings
Fig. 1 is the structural representation that specific embodiment of combination type hollow bearing roller of the present invention is embodiment 1;
Fig. 2 is embodiment 2 a structural representation for another specific embodiment of the present invention.
Be denoted as in above Fig. 1～2:
The 1-expansion set,
The 2-sleeve.
Embodiment
Embodiment 1, and referring to accompanying drawing 1, this embodiment of combination type hollow bearing roller of the present invention Bearing Steel of drawing materials is made sleeve 2, and cylindrical cylindrical shell has interior taper type cavity.1 of expansion set adopts the cast iron manufacturing, is taper type, with sleeve 2 inner chambers size coupling, also has interior taper type cavity.Expansion set 1 coaxial line is inserted in the sleeve 2, and expansion set 1 closely is sleeved on outer layer sleeve 2.If in the rolling bearing assembly process,, can axially exert pressure to expansion set, force to produce between expansion set 1 and the outer layer sleeve 2 to move axially by special-purpose pressurized equipment by between the inside and outside circle that measure to find roller and bearing during excesssive gap.Because the thrusting action of the conical surface of internal layer roller expansion set 1 can force the outside dimension of outer layer sleeve 2 evenly to increase, thereby reach the purpose of eliminating the fit up gap.
To be proved to be effect remarkable with clinic trial through trial-production for the combination type hollow bearing roller of the present invention of Gou Chenging thus, reaches designing requirement fully.Because it is different with the material of sleeve 2 to make expansion set 1, mechanical characteristic separately is also different.The mechanical property of the bearing roller that it combines is also different, thereby the better effects if of its vibration and noise reducing, and the bearing with conventional construction differs widely after tested.
Claims (1)
1. combination type hollow bearing roller, it is characterized in that it has sleeve (2), the interior coaxial line of sleeve (2) be set with one with the tubular expansion set (1) of sleeve (2) inner chamber size coupling, cylindrical or the truncated cone of described sleeve (2), its inner chamber is interior taper type; Described expansion set (1) is the taper type with sleeve (2) inner chamber size coupling, and its inner chamber also is interior taper type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100060835A CN101235850A (en) | 2007-01-29 | 2007-01-29 | Combination type hollow bearing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100060835A CN101235850A (en) | 2007-01-29 | 2007-01-29 | Combination type hollow bearing roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101235850A true CN101235850A (en) | 2008-08-06 |
Family
ID=39919689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100060835A Pending CN101235850A (en) | 2007-01-29 | 2007-01-29 | Combination type hollow bearing roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101235850A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256187A (en) * | 2013-05-17 | 2013-08-21 | 国电联合动力技术(连云港)有限公司 | Large-size megawatt wind turbine generator main shaft system |
| CN114593142A (en) * | 2022-02-11 | 2022-06-07 | 长春电子科技学院 | Combined roller structure, roller, high-end bearing and high-end equipment |
| CN114754072A (en) * | 2022-02-11 | 2022-07-15 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
-
2007
- 2007-01-29 CN CNA2007100060835A patent/CN101235850A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256187A (en) * | 2013-05-17 | 2013-08-21 | 国电联合动力技术(连云港)有限公司 | Large-size megawatt wind turbine generator main shaft system |
| CN114593142A (en) * | 2022-02-11 | 2022-06-07 | 长春电子科技学院 | Combined roller structure, roller, high-end bearing and high-end equipment |
| CN114754072A (en) * | 2022-02-11 | 2022-07-15 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
| CN114593142B (en) * | 2022-02-11 | 2023-09-22 | 长春电子科技学院 | Combined roller structure, roller, high-end bearing and high-end equipment |
| CN114754072B (en) * | 2022-02-11 | 2023-09-22 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |