CN201963729U - Combined bearing - Google Patents
Combined bearing Download PDFInfo
- Publication number
- CN201963729U CN201963729U CN2011200191532U CN201120019153U CN201963729U CN 201963729 U CN201963729 U CN 201963729U CN 2011200191532 U CN2011200191532 U CN 2011200191532U CN 201120019153 U CN201120019153 U CN 201120019153U CN 201963729 U CN201963729 U CN 201963729U
- Authority
- CN
- China
- Prior art keywords
- outer shroud
- combination bearing
- spherical surface
- retainer
- outer 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.)
- Expired - Lifetime
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Classifications
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a combined bearing which comprises an inner ring, a rolling component and an outer ring which are connected with one another in sequence, wherein the outer ring comprises a first outer ring and a second outer ring; the first outer ring is sleeved at the outer side of the rolling component in an embedded manner; an outer spherical structure is arranged at the outer side of the first outer ring; and the second outer ring is sleeved at the outer side of the first outer ring and provided with an inner spherical structure matched with the outer spherical surface of the first outer ring. The outer ring in the combined bearing is designed into the first outer ring and the second outer ring with joint-like structures so as to compensate the misalignment generated during the installation and use process of a transmission shaft. The combined bearing has a simple structure and is lighter in weight and simple and easy to install. Meanwhile, as proper materials are adopted, the combined bearing can meet the requirements of preventing mildew, preventing salt mist, and preventing dump and heat.
Description
Technical field
The utility model relates to the supporting structure of transmission shaft, especially relates 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, easily produce when mounted and misalign phenomenon, easily 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, to guarantee effective application of transmission shaft, prolong 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 may 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 the installation steps complexity, the labor intensive material resources.
The model utility content
The utility model purpose is to provide a kind of combination bearing, this combined bearing structure compactness, 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 utility model provides a kind of combination bearing, comprises in turn the interior ring, rolling assembly and the outer shroud that connect, and 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 made by anti-salt fog material.
Further, above-mentioned interior ring and outer shroud are made by corrosion-resistant high nitrogen stainless steel material, and rolling element is a ceramic ball, and retainer is made by bronze material.
The beneficial effects of the utility model: combination bearing provided by the utility model, be set to have first outer shroud and second outer shroud of similar articulation structure by 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 " by adopting suitable material.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.With reference to figure, the utility model is described in further detail below.
Description of drawings
Accompanying drawing constitute this specification a part, be used for further understanding the utility model, preferred embodiment of the present utility model has been shown in the accompanying drawing, and has been used for illustrating principle of the present utility model with specification.Among the figure:
Fig. 1 shows according to the side of a kind of structure of combination bearing of the utility model embodiment and cuts open schematic representation;
Fig. 2 shows according to the part side of the utility model embodiment's the another kind of structure of combination bearing and cuts open schematic representation; And
Fig. 3 shows the structural representation according to second outer shroud in the utility model embodiment's the combination bearing.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but following embodiment and accompanying drawing only are in order to understand the utility model, and can not limit the utility model, the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, in a typical embodiment of the present utility model, this combination bearing comprises interior ring 10, rolling assembly and the outer shroud 20 that connects in turn.As shown in Figure 1, the outer shroud that is adopted in the utility model combination bearing comprises two-part structure, be respectively first outer shroud 21 and second outer shroud 23, first outer shroud 21 is 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 by 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 the utility model combination bearing uses, at the utility model combination bearing 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 may make the inside and outside ring of bearing produce deflection with said structure, also may cause the bearing skewness because of the deflection of transmission shaft, this moment, combination bearing provided by the utility model was by 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 produced of buffering is to compensating because of misalign (off-centre) that deflection caused.Combination bearing with said structure can be simplified the utility model combined bearing structure in the function that guarantees combination bearing, make its easy processing, installs easily.
As shown in Figure 2, of the present utility model 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 the utility model combination bearing.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 join, retainer 60 gives opposite force in edge of concave spherical surface, the edge that stops 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 the utility model combination bearing, 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 the utility model combination bearing simultaneously according to different needs, to guarantee the stable use of the utility model combination bearing.Certainly for the consideration to the weight of combination bearing, that second outer shroud 23 can be made is 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, also provides certain support force for the utility model combination bearing simultaneously.
As shown in Figure 3, in a kind of preferably mode of execution of the present utility model, 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 the utility model combination bearing, 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 utility model need cooperate the supporting base or the casing that are installed near the transmission shaft to use in use, by mounting flange and supporting base or casing are connected, make combination bearing provided by the utility model have stable structure, the external force that a plurality of mounting holes 29 that circumferentially distribute along mounting flange can make combination bearing that the utility model provides bear evenly is delivered on supporting base or the casing, this structure is not only stable, also is convenient to simultaneously install, dismantle.
In a kind of preferably mode of execution of the present utility model, this combination bearing is when comprising above-mentioned any structure, the utility model combination bearing has the deep groove ball bearing structure, and rolling assembly comprises retainer 30 and a plurality of rolling element 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 by the pocket hole and be fixing, and rolling element contacts with the interior ring 10 and first outer shroud 21 simultaneously; Wherein, the interior ring 10 and first outer shroud 21 are provided with the raceway that is fit to rolling element 40 rollings with the face of rolling element 40 connecting parts, and rolling element 40 matches with corresponding raceway on the interior ring 10 and first outer shroud 21.Adopt the combination bearing of this structure, each parts connects compact, makes the utility model combination bearing realize misaligning the compensation requirement better.In addition, can't use under the lubricated condition of liquid oils, the preferred grease lubrication mode that adopts, in order to prevent that lubricant grease from leaking and pollutant enters bearing, periphery at retainer 30 is provided with Sealing 50, 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 utility model, 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 utility model combination bearing at least Sealing 50 adopt anti-salt fog material to make.Interior ring 10 and outer shroud 20 adopt corrosion-resistant high nitrogen stainless steel material to make, rolling element 40 adopts ceramic ball, retainer 30 adopts bronze material to make so that this combination bearing can anti-atmosphere, the corrosion of seawater, acid and other media, the working life of prolongation the utility model combination bearing.
Combination bearing provided by the utility model is set to have first outer shroud and second outer shroud of similar articulation structure by 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 " three is anti-" requirement by adopting the material that is fit to.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a combination bearing comprises the interior ring (10), rolling assembly and the outer shroud (20) that connect in turn, it is characterized in that described outer shroud (20) comprising:
First outer shroud (21) is nested in the outside of described rolling assembly, and the outside of described first outer shroud (21) has the outer spherical surface structure;
Second outer shroud (23) is nested in the outside of described first outer shroud (21), and has the inner ball surface structure that matches with described first outer shroud (21) outer spherical surface.
2. combination bearing according to claim 1, it is characterized in that, the outer spherical surface of described first outer shroud (21) is provided with concave spherical surface, and the central position of the described relatively concave spherical surface of described second outer shroud (23) is provided with retainer (60), described retainer (60) and described concave spherical surface interval intended distance.
3. combination bearing according to claim 2, it is characterized in that, the central position of the described relatively concave spherical surface of described second outer shroud (23) is provided with stop hole (25), and the described relatively concave spherical surface of described retainer (60) radially is connected with described stop hole (25) movably.
4. combination bearing according to claim 1 is characterized in that, the outer circumferential side of described second outer shroud (23) is provided with the mounting flange (27) that extends radially outward.
5. combination bearing according to claim 4 is characterized in that, described mounting flange (27) is provided with a plurality of mounting holes (29).
6. combination bearing according to claim 1 is characterized in that, described combination bearing is a deep groove ball bearing.
7. combination bearing according to claim 6 is characterized in that, wherein said rolling assembly comprises:
Retainer (30), be arranged on described between ring (10) and described first outer shroud (21), described retainer (30) is provided with a plurality of pockets hole of evenly arranging along circumferentially, the two ends in described pocket hole respectively with described in encircle (10) and first outer shroud (21) communicates;
A plurality of rolling elements (40) are installed in respectively in each described pocket hole, rolling element (40) is evenly isolated and is guided, described rolling element (40) with described in ring (10) and first outer shroud (21) contact.
8. combination bearing according to claim 7 is characterized in that, described rolling assembly also comprises:
Sealing (50) links to each other with first outer shroud (21) with described interior ring (10) respectively, and described retainer (30), rolling element (40) are sealed between described interior ring (10) and first outer shroud (21).
9. combination bearing according to claim 8 is characterized in that, described at least Sealing (50) is made by anti-salt fog material.
10. combination bearing according to claim 7 is characterized in that, described interior ring (10) and outer shroud (20) are made by corrosion-resistant high nitrogen stainless steel material, and described rolling element (40) is a ceramic ball, and described retainer (30) is made by bronze material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200191532U CN201963729U (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200191532U CN201963729U (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963729U true CN201963729U (en) | 2011-09-07 |
Family
ID=44526265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200191532U Expired - Lifetime CN201963729U (en) | 2011-01-20 | 2011-01-20 | Combined bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135135A (en) * | 2011-01-20 | 2011-07-27 | 中国航空动力机械研究所 | Combined bearing |
| CN103016546A (en) * | 2012-12-10 | 2013-04-03 | 中山市盈科轴承制造有限公司 | Outer spherical surface angle contact ball bearing with pedestal |
-
2011
- 2011-01-20 CN CN2011200191532U patent/CN201963729U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135135A (en) * | 2011-01-20 | 2011-07-27 | 中国航空动力机械研究所 | Combined bearing |
| CN102135135B (en) * | 2011-01-20 | 2012-09-05 | 中国航空动力机械研究所 | Combined bearing |
| CN103016546A (en) * | 2012-12-10 | 2013-04-03 | 中山市盈科轴承制造有限公司 | Outer spherical surface angle contact ball bearing with pedestal |
| CN103016546B (en) * | 2012-12-10 | 2015-07-29 | 中山市盈科轴承制造有限公司 | A kind of band base spherical outside surface angular contact ball bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |