CN102135135B - Combined bearing - Google Patents
Combined bearing Download PDFInfo
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- CN102135135B CN102135135B CN 201110023336 CN201110023336A CN102135135B CN 102135135 B CN102135135 B CN 102135135B CN 201110023336 CN201110023336 CN 201110023336 CN 201110023336 A CN201110023336 A CN 201110023336A CN 102135135 B CN102135135 B CN 102135135B
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- outer shroud
- combination bearing
- spherical surface
- retainer
- outer ring
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Abstract
The invention discloses a combined bearing comprising an inner ring, a rolling assembly and an outer ring, which are sequentially connected. The outer ring comprises a first outer ring and a second outer ring, wherein the first outer ring is sleeved in the outer side of the rolling assembly in an embedding manner, and the outer side of the first outer ring is of an outer sphere structure; and the second outer ring is sleeved in the outer side of the first outer ring in an embedding manner and is of an inner sphere structure matched with the outer sphere structure of the first outer ring. In the combined bearing disclosed by the invention, the outer ring of the combined bearing comprises the first outer ring and the second outer ring, which are of similar joint structures, thus disalignment in the process of mounting or using a transmission shaft is compensated. The combined bearing has a simple structure, is light and is simple and easy to mount. Meanwhile, the combined bearing is made from suitable materials, thereby meeting the three-protection requirements for fungus resistance, salt-mist resistance and moisture-heat resistance.
Description
Technical field
The present invention relates to the supporting structure of transmission shaft, especially relate to a kind of combination bearing in order to supporting shaft.
Background technique
Employed transmission shaft is longer usually in some drive mechanisms at present; Be prone to when mounted produce misalign phenomenon; Be prone to produce deflection deformation during work; This just needs the bearing device of transmission shaft can compensate this phenomenon and the axial and radial load that bears because of transmission shaft deflection deformation generation of misaligning, and to guarantee effective application of transmission shaft, prolongs the working life of transmission shaft.With tail transmission shaft in the Helicopter Transmission System is the example explanation; Tail transmission shaft is all very long usually in the Helicopter Transmission System; Need to install the cardan-shaft suspension structure; This supporting structure need satisfy misalign (off-centre) that possibly occur when compensating transmission shaft installation or work simultaneously, with the stable operation of further assurance transmission shaft.
The traditional design of the supporting structure of tail transmission shaft is to adopt selfsealings deep groove ball bearing and elastic damping mechanism to make up the supporting of satisfying transmission shaft simultaneously and misalign the compensation requirement in the Helicopter Transmission System; But this supporting structure that adopts the combination of selfsealings deep groove ball bearing and elastic damping mechanism simultaneously not only complex structure, number of spare parts is many, weight is big, the life-span is shorter; And installation steps are complicated, the labor intensive material resources.
Summary of the invention
The object of the invention is to provide a kind of combination bearing, and this combined bearing structure is compact, reliable, and weight is lighter, installs, dismounting is simple, can satisfy when transmission shaft is supported misaligning when assembling of compensation transmission shaft and work.
For this reason, the invention provides a kind of combination bearing, comprise in order the interior ring, rolling assembly and the outer shroud that connect, this outer shroud comprises: first outer shroud, be nested in the outside of rolling assembly, and the outside of first outer shroud has the outer spherical surface structure; Second outer shroud is nested in the outside of first outer shroud, and has the inner ball surface structure that matches with the first outer shroud outer spherical surface.
Further, the outer spherical surface of first outer shroud is provided with concave spherical surface in the combinations thereof bearing, and the central position of the relative concave spherical surface of second outer shroud is provided with retainer, and retainer and concave spherical surface be intended distance at interval.
Further, the central position of the relative concave spherical surface of above-mentioned second outer shroud is provided with stop hole, and the relative concave spherical surface of retainer radially is connected with stop hole movably.
Further, the outer circumferential side of above-mentioned second outer shroud is provided with radially the mounting flange to extension.
Further, above-mentioned mounting flange is provided with a plurality of mounting holes.
Further, the combinations thereof bearing is a deep groove ball bearing.
Further, rolling assembly comprises retainer in the combinations thereof bearing, and between the ring and first outer shroud, retainer is provided with a plurality of pockets hole of evenly arranging along circumferentially in being arranged on, and the two ends in pocket hole communicate with the interior ring and first outer shroud respectively; A plurality of rolling elements are installed in respectively in each pocket hole, rolling element and interior ring and the first outer loop contacts.
Further, above-mentioned rolling assembly also comprises Sealing, links to each other with first outer shroud with interior ring respectively, and retainer, rolling element are sealed between the interior ring and first outer shroud.
Further, above-mentioned at least Sealing is processed by anti-salt fog material.
Further, above-mentioned interior ring and outer shroud are processed by corrosion-resistant high nitrogen stainless steel material, and rolling element is a ceramic ball, and retainer is processed by bronze material.
Beneficial effect of the present invention: combination bearing provided by the present invention, be set to have first outer shroud and second outer shroud of similar articulation structure through outer shroud in the combination bearing, with the compensation transmission shaft install or using process in caused misalign phenomenon.This combined bearing structure is simple, weight is lighter, installs simple.Simultaneously, this combination bearing makes it can satisfy mould proof, anti-salt fog, prevents damp and hot " three anti-the requirements " through adopting suitable material.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
Accompanying drawing constitute this specification a part, be used for further understanding the present invention, the preferred embodiments of the present invention have been shown in the accompanying drawing, and have been used for explaining principle of the present invention with specification.Among the figure:
Fig. 1 shows according to the side of a kind of structure of combination bearing of the embodiment of the invention and cuts open schematic representation;
Fig. 2 shows according to the part side of the another kind of structure of combination bearing of the embodiment of the invention and cuts open schematic representation; And
Fig. 3 shows the structural representation according to second outer shroud in the combination bearing of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but following embodiment and accompanying drawing only are in order to understanding the present invention, and can not limit the present invention, the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, in a typical embodiment of the present invention, this combination bearing comprises interior ring 10, rolling assembly and the outer shroud 20 that connects in order.Can know by Fig. 1; The outer shroud that in combination bearing of the present invention, is adopted comprises two-part structure; Be respectively first outer shroud 21 and second outer shroud, 23, the first outer shrouds 21 and be nested in the outside of rolling assembly, the outside of first outer shroud 21 has the outer spherical surface structure; Second outer shroud 23 is nested in the outside of first outer shroud 21, and has the inner ball surface structure that matches with first outer shroud, 21 outer spherical surfaces.First outer shroud 21 matches through the inner ball surface of the outer spherical surface and second outer shroud 23.This just makes to win and forms the structure that is similar to the joint between the outer shroud 21 and second outer shroud 23; Increased the flexibility that combination bearing of the present invention uses; At combination bearing of the present invention when having transmission system than the long pass moving axis and be used; Interior ring 10 and transmission shaft drive fit, the position of outer shroud 20 fixed combination bearings, and support and interior ring 10 friction tight transmission shafts.The installation process of transmission shaft and combination bearing; And in the process that is used, all possibly make the inside and outside ring of bearing produce deflection with said structure, also possibly cause the bearing skewness because of the deflection of transmission shaft; This moment, combination bearing provided by the present invention was through adopting the structure in above-mentioned similar joint; Make the suitable displacement of inner ball surface that the outer spherical surface of the outer shroud 21 of winning can relative second outer shroud 23, the deflection that buffering is produced is to compensating because of misalign (off-centre) that deflection caused.Combination bearing with said structure can be simplified combined bearing structure of the present invention in the function that guarantees combination bearing, make its easy processing, easy mounting.
As shown in Figure 2, of the present invention a kind of preferred embodiment in, in order to limit the angle rotatable of first outer shroud, 21 relative second outer shrouds 23 in the said structure, and then guarantee the stable use of combination bearing of the present invention.This combination bearing is when comprising said structure; On the outer spherical surface of first outer shroud 21, be provided with concave spherical surface; This concave spherical surface extends axially along combination bearing, is provided with retainer 60 in the central position of second outer shroud, 23 relative concave spherical surfaces, retainer 60 and concave spherical surface interval intended distance.When first outer shroud, 21 relative second outer shrouds 23 rotate; The edge of concave spherical surface is also with respect to retainer 60 rotations; When the edge of concave spherical surface and retainer 60 joined, retainer 60 gave opposite force in edge of concave spherical surface, stops that the edge of concave spherical surface continues rotation towards same direction; Promptly stopped of the relative rotation of first outer shroud 21, its angle of swing is controlled in certain scope with respect to second outer shroud 23.Define the offset angle that misaligns of combination bearing of the present invention, to guarantee the stable use of this combination bearing.In a kind of embodiment of this mode of execution.Concave spherical surface is annular concave spherical surface, and retainer 60 is the annular stop part, and the central position of the annular relatively concave spherical surface of annular stop part is provided with.In a kind of more preferably mode, be provided with concave spherical surface in a side of first outer shroud 21, be provided with stop hole 25 in the central position of second outer shroud, 23 relative concave spherical surfaces, retainer 60 relative concave spherical surfaces radially are connected with stop hole 25 movably.This structure is not only made easily, can adjust the offset angle that misaligns of combination bearing of the present invention simultaneously according to different needs, to guarantee the stable use of combination bearing of the present invention.Certainly from consideration to the weight of combination bearing, can with second outer shroud 23 make thinner, at this moment, when using retainer 60, can with retainer 60 be connected into second outer shroud 23 after near being arranged on transmission shaft supporting base (or casing) 70 is connected.Not only can increase the connective stability between the retainer 60 and second outer shroud 23 this moment, for combination bearing of the present invention certain support force is provided also simultaneously.
As shown in Figure 3, in a kind of preferably mode of execution of the present invention, this combination bearing is provided with the mounting flange 27 that extends radially outward at the outer circumferential side of second outer shroud 23 when comprising above-mentioned any structure.The setting of mounting flange 27 can be simplified the installation steps of combination bearing of the present invention, reduces required component are installed, and more stable supporting structure can be provided.Preferably, mounting flange 27 is provided with a plurality of mounting holes 29, and a plurality of mounting holes 29 are along circumferentially being arranged in equably on the mounting flange 27.Combination bearing provided by the present invention need cooperate the supporting base or the casing that are installed near the transmission shaft to use in use; Through mounting flange and supporting base or casing are connected; Make combination bearing provided by the present invention have stable structure; The a plurality of mounting holes 29 that circumferentially distribute along mounting flange can make the external force that combination bearing provided by the present invention bore evenly be delivered on supporting base or the casing, and this structure is not only stable, also are convenient to installation, dismounting simultaneously.
In a kind of preferably mode of execution of the present invention, this combination bearing is when comprising above-mentioned any structure, and combination bearing of the present invention has the deep groove ball bearing structure, and rolling assembly comprises retainer 30 and a plurality of rolling elements 40 in this deep groove ball bearing structure.Between ring 10 and first outer shroud 21, retainer 30 was provided with a plurality of pockets hole of circumferentially evenly arranging in retainer 30 was arranged on, and the two ends in pocket hole communicate with the interior ring 10 and first outer shroud 21 respectively; A plurality of rolling elements 40 are installed in respectively in each pocket hole, and rolling element 40 evenly separates through the pocket hole and be fixing, and rolling element contacts with the interior ring 10 and first outer shroud 21 simultaneously; Wherein, the face of the interior ring 10 and first outer shroud 21 and rolling element 40 connecting parts is provided with and is fit to the raceway that rolling element 40 rolls, and corresponding raceway matches on rolling element 40 and the interior ring 10 and first outer shroud 21.Adopt the combination bearing of this structure, each parts connects compact, makes combination bearing of the present invention realize misaligning the compensation requirement better.In addition; Can't use under the lubricated condition of liquid oil; The preferred grease lubrication mode that adopts in order to prevent that lubricant grease from leaking and pollutant gets into bearing, is provided with Sealing 50 in the periphery of retainer 30; Sealing 50 links to each other with first outer shroud 21 with interior ring 10 respectively, encircles between 10 and first outer shroud 21 in retainer 30, rolling element 40 are sealed in.
In a kind of preferably mode of execution of the present invention; This combination bearing is when comprising above-mentioned any structure; In order to make this combination bearing can be more suitable for being applied to various environment; Satisfy mould proof, anti-salt fog, anti-damp and hot " three anti-the requirements ", in the combination bearing of the present invention at least Sealing 50 adopt anti-salt fog material to process.Interior ring 10 adopts corrosion-resistant high nitrogen stainless steel material to process with outer shroud 20; Rolling element 40 adopts ceramic ball; Retainer 30 adopts bronze material to process so that this combination bearing can anti-atmosphere, the corrosion of seawater, acid and other media, the working life of prolongation combination bearing of the present invention.
Combination bearing provided by the present invention is set to have first outer shroud and second outer shroud of similar articulation structure through outer shroud in the combination bearing, with the compensation transmission shaft install or using process in caused misalign phenomenon.This combined bearing structure is simple, weight is lighter, installs simple.Simultaneously, this combination bearing can satisfy " three is anti-" requirement through adopting the material that is fit to, making it.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a combination bearing comprises the interior ring (10), rolling assembly and the outer shroud (20) that connect in order, it is characterized in that said outer shroud (20) comprising:
First outer shroud (21) is nested in the outside of said rolling assembly, and the outside of said first outer shroud (21) has the outer spherical surface structure;
Second outer shroud (23) is nested in the outside of said first outer shroud (21), and has the inner ball surface structure that matches with said first outer shroud (21) outer spherical surface;
The outer spherical surface of said first outer shroud (21) is provided with concave spherical surface, and the central position of the said relatively concave spherical surface of said second outer shroud (23) is provided with retainer (60), said retainer (60) and said concave spherical surface interval intended distance.
2. combination bearing according to claim 1; It is characterized in that; The central position of the said relatively concave spherical surface of said second outer shroud (23) is provided with stop hole (25), and the said relatively concave spherical surface of said retainer (60) radially is connected with said stop hole (25) movably.
3. combination bearing according to claim 1 is characterized in that, the outer circumferential side of said second outer shroud (23) is provided with the mounting flange (27) that extends radially outward.
4. combination bearing according to claim 3 is characterized in that, said mounting flange (27) is provided with a plurality of mounting holes (29).
5. combination bearing according to claim 1 is characterized in that, said combination bearing is a deep groove ball bearing.
6. combination bearing according to claim 5 is characterized in that, wherein said rolling assembly comprises:
Retainer (30), be arranged on said between ring (10) and said first outer shroud (21), said retainer (30) is provided with a plurality of pockets hole of evenly arranging along circumferentially, the two ends in said pocket hole respectively with said in encircle (10) and first outer shroud (21) communicates;
A plurality of rolling elements (40) are installed in respectively in each said pocket hole, rolling element (40) is evenly isolated and is guided, said rolling element (40) with said in ring (10) and first outer shroud (21) contact.
7. combination bearing according to claim 6 is characterized in that, said rolling assembly also comprises:
Sealing (50) links to each other with first outer shroud (21) with said interior ring (10) respectively, and said retainer (30), rolling element (40) are sealed between said interior ring (10) and first outer shroud (21).
8. combination bearing according to claim 7 is characterized in that, said at least Sealing (50) is processed by anti-salt fog material.
9. combination bearing according to claim 6 is characterized in that, said interior ring (10) and outer shroud (20) are processed by corrosion-resistant high nitrogen stainless steel material, and said rolling element (40) is a ceramic ball, and said retainer (30) is processed by bronze material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110023336 CN102135135B (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110023336 CN102135135B (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102135135A CN102135135A (en) | 2011-07-27 |
| CN102135135B true CN102135135B (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110023336 Active CN102135135B (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
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| Country | Link |
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| CN (1) | CN102135135B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381475B (en) * | 2011-08-15 | 2014-01-15 | 中国航空动力机械研究所 | Tail driving shaft support device |
| CN102691722B (en) * | 2012-04-11 | 2017-11-03 | 上海齐耀动力技术有限公司 | A kind of two degrees of freedom rolling bearing |
| CN104482897B (en) * | 2014-12-16 | 2017-01-25 | 黑龙江大学 | Outer ring measuring device for ball bearing automatic assembling machine |
| CN110332230A (en) * | 2019-07-09 | 2019-10-15 | 中国航发哈尔滨东安发动机有限公司 | A kind of combination bearing |
| CN110345156A (en) * | 2019-07-09 | 2019-10-18 | 中国航发哈尔滨东安发动机有限公司 | A kind of helicopter tailing axle mounting structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330233A (en) * | 2001-08-20 | 2002-01-09 | 郑哲立 | Magnetically prestressed combind bearing |
| CN201963729U (en) * | 2011-01-20 | 2011-09-07 | 中国航空动力机械研究所 | Combined bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2817932B1 (en) * | 2000-12-12 | 2003-02-14 | Eurocopter France | BEARING FOR HELICOPTER REAR TRANSMISSION SHAFT |
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2011
- 2011-01-20 CN CN 201110023336 patent/CN102135135B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330233A (en) * | 2001-08-20 | 2002-01-09 | 郑哲立 | Magnetically prestressed combind bearing |
| CN201963729U (en) * | 2011-01-20 | 2011-09-07 | 中国航空动力机械研究所 | Combined bearing |
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| Publication number | Publication date |
|---|---|
| CN102135135A (en) | 2011-07-27 |
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