CN202402478U - Spherical elastic bearing - Google Patents
Spherical elastic bearing Download PDFInfo
- Publication number
- CN202402478U CN202402478U CN 201120564752 CN201120564752U CN202402478U CN 202402478 U CN202402478 U CN 202402478U CN 201120564752 CN201120564752 CN 201120564752 CN 201120564752 U CN201120564752 U CN 201120564752U CN 202402478 U CN202402478 U CN 202402478U
- Authority
- CN
- China
- Prior art keywords
- joint
- metal
- metal spacers
- big
- rubber layers
- 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
Links
Abstract
The utility model belongs to the technical field of design of helicopter components, in particular to an improved spherical elastic bearing for a helicopter propeller hub. The spherical elastic bearing is composed of a big joint (1), a small joint (2), 5-30 metal spacers (3) and rubber layers (4), wherein the metal spacers (3) are not concentrically stacked, and the rubber layers (4) are used for connecting the big joint (1) and the metal spacers (3), two adjacent metal spacers (3), and the metal spacers (3) and the small joint (2) in a vulcanizing manner. When certain pressure is applied between the big joint (1) and the small joint (2) and after all rubber layers (4) are pressed, the centers of spheres of all spherical crown surfaces are overlapped to the center of sphere of the small joint (2), and the consistent extrusion deformation of all rubber layers (4) is ensured. Fatigue cracks are not easily generated due to the rubber layers which are not concentrically arranged, and the service life of the elastic bearing is greatly prolonged.
Description
Technical field
The utility model belongs to the helicopter component design field, particularly relates to the improvement to the sphere resilient bearing that is used for helicopter hub.
Background technique
At present; The structure of sphere resilient bearing that is used for helicopter hub is referring to Fig. 1; It is connected big joint 1 and is formed with the rubber layer of metal spacer, adjacent two metal spacers and metal spacer and little joint by big joint, little joint, 5～30 coaxial metal spacers that stack with sulfuration, all between big joint and little joint, the thickness of all metal spacers is identical for all metal spacers; The right side of big joint is recessed left sphere; Little joint is a circular shaft, and the left side of this circular shaft is the sphere that protrudes left, and all metal spacers all are spheres.Its shortcoming is: behind the centre of sphere sulfidization molding on each spherical crown surface is concentric; After applying certain pressure between big joint and the little joint, owing to the rubber layer pressurized is out of shape, the heart so the centre of sphere dissimilates; The edge of each layer rubber layer and center rubber compressive deformation amount are inconsistent; Cause the rubber compressive deformation in rubber layer center portion bigger,, thereby cause the life-span of sphere resilient bearing shorter so pressurized is inhomogeneous.
Summary of the invention
The purpose of the utility model is: a kind of sphere resilient bearing is provided, and can be improved the working life of this bearing.
The technological scheme of the utility model is: a kind of sphere resilient bearing; Being connected big joint 1 by big joint 1,2,5～30 metal spacers 3 of little joint and sulfuration forms with the rubber layer 4 of metal spacer 3, adjacent metal partition 3 and metal spacer 3 and little joint 2; The thickness of all metal spacers 3 is identical; The thickness of all rubber layers 4 is the relations of successively decreasing from big joint 1 to little joint 2, and the right side of said big joint 1 is recessed left spherical crown surface, and the left side of little joint 2 is the spherical crown surface of protrusion left; All metal spacers 3 all are the spherical crown surfaces; The external diameter of the metal spacer 3 of the big joint 1 of adjacency is maximum, and the external diameter of the metal spacer 3 of the little joint 2 of adjacency is minimum, and the external diameter of the metal spacer 3 of centre reduces from left to right gradually; The centre of sphere on all metal spacers 3 each spherical crowns surface is horizontal arrangement from left to right successively.
The utility model has the advantages that: the rubber layer that decentraction is arranged is difficult for producing fatigue crack, the working life of having improved resilient bearing greatly.Through evidence, be more than doubled than existing sphere resilient bearing the working life of the sphere resilient bearing of the utility model.
Description of drawings
Fig. 1 is the existing structural representation that is used for the sphere resilient bearing of helicopter hub.
Fig. 2 is the structural representation of the utility model.
Wherein, the big joint of 1-, the little joint of 2-, 3-metal spacer, 4-rubber layer.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explain; See also Fig. 2, a kind of sphere resilient bearing is connected big joint 1 by big joint 1,2,5～30 metal spacers 3 of little joint and sulfuration and forms with the rubber layer 4 of metal spacer 3, adjacent metal partition 3 and metal spacer 3 and little joint 2; The thickness of all metal spacers 3 is identical; The thickness of all rubber layers 4 is the relations of successively decreasing from big joint 1 to little joint 2, and the right side of said big joint 1 is recessed left spherical crown surface, and the left side of little joint 2 is the spherical crown surface of protrusion left; All metal spacers 3 all are the spherical crown surfaces; The external diameter of the metal spacer 3 of the big joint 1 of adjacency is maximum, and the external diameter of the metal spacer 3 of the little joint 2 of adjacency is minimum, and the external diameter of the metal spacer 3 of centre reduces from left to right gradually; The centre of sphere on all metal spacers 3 each spherical crowns surface is horizontal arrangement from left to right successively.
The working principle of the utility model is: metal spacer 3 is the crown shape of different sizes of balls; All metal spacers 3 all are not concentric arrangement, when between big joint 1 and little joint 2, applying certain pressure, behind all rubber layer 3 pressurizeds; The centre of sphere on each spherical crown surface all overlaps the centre of sphere O place of little joint 2; So can guarantee that the compressive strain of all rubber layers 4 is roughly the same, reach the purpose of equal strength design, thus the life-span of having improved the sphere resilient bearing.
Claims (1)
1. sphere resilient bearing; Being connected big joint [1] by big joint [1], little joint [2], 5～30 metal spacers [3] and sulfuration forms with metal spacer [3], adjacent metal partition [3] and metal spacer [3] and the rubber layer [4] of little joint [2]; The thickness of all metal spacers [3] is identical; The thickness of all rubber layers [4] is the relation of successively decreasing from big joint [1] to little joint [2], and the right side of said big joint [1] is recessed left spherical crown surface, and the left side of little joint [2] is the spherical crown surface of protrusion left; All metal spacers [3] all are the spherical crown surfaces; The external diameter of the metal spacer [3] of the big joint [1] of adjacency is maximum, and the external diameter of the metal spacer [3] of the little joint of adjacency [2] is minimum, and the external diameter of the metal spacer [3] of centre reduces from left to right gradually;
It is characterized in that the centre of sphere on each spherical crown of all metal spacers [3] surface is horizontal arrangement from left to right successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120564752 CN202402478U (en) | 2011-12-22 | 2011-12-22 | Spherical elastic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120564752 CN202402478U (en) | 2011-12-22 | 2011-12-22 | Spherical elastic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402478U true CN202402478U (en) | 2012-08-29 |
Family
ID=46700128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120564752 Expired - Lifetime CN202402478U (en) | 2011-12-22 | 2011-12-22 | Spherical elastic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402478U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757118A (en) * | 2015-12-08 | 2016-07-13 | 中国航空工业集团公司北京航空材料研究院 | Radial-load-resistant long-service-life rubber supporting bearing |
| CN110081077A (en) * | 2019-04-09 | 2019-08-02 | 中国航发北京航空材料研究院 | A kind of stable resilient bearing of high radial |
| CN111749984A (en) * | 2019-03-29 | 2020-10-09 | 斯凯孚公司 | Laminated bearing assembly with different shim thicknesses |
-
2011
- 2011-12-22 CN CN 201120564752 patent/CN202402478U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757118A (en) * | 2015-12-08 | 2016-07-13 | 中国航空工业集团公司北京航空材料研究院 | Radial-load-resistant long-service-life rubber supporting bearing |
| CN111749984A (en) * | 2019-03-29 | 2020-10-09 | 斯凯孚公司 | Laminated bearing assembly with different shim thicknesses |
| CN110081077A (en) * | 2019-04-09 | 2019-08-02 | 中国航发北京航空材料研究院 | A kind of stable resilient bearing of high radial |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202402478U (en) | Spherical elastic bearing | |
| CN202076589U (en) | Connector floating mechanism | |
| CN102401085B (en) | Shakeproof device | |
| CN201836388U (en) | Y-shaped seal ring | |
| CN205376113U (en) | Spherical transmitting transducer of small -size | |
| CN203571276U (en) | Sealing structure of pipeline flange | |
| CN104632885A (en) | Rubber elastic bearing | |
| CN203901122U (en) | Grinding wheel | |
| CN102011798B (en) | Spherical elastic bearing and injecting method in forming process of spherical elastic bearing | |
| CN202252790U (en) | Outer connecting plate | |
| CN105757118B (en) | A kind of anti-radial load long-life rubber bearing | |
| CN206486979U (en) | A kind of airport storm water ditch shock-absorbing type grate | |
| CN202596387U (en) | Connecting hinge for covering cap of airplane trailing edge | |
| CN202274014U (en) | Rolling pin slope type uni-directional bearing with folding edge structure plate spring | |
| CN203755532U (en) | Movable wall panel structure | |
| CN203009821U (en) | End face sealing ring | |
| CN204772030U (en) | Novel grind mould bonding structure | |
| CN202347667U (en) | Improved steel plate connecting structure | |
| CN204647356U (en) | The valve board structure of butterfly valve | |
| CN203374683U (en) | Laminated pin type elastic coupler | |
| CN102777614A (en) | Connection positioning device between valve shaft and valve plate of butterfly valve | |
| CN208745684U (en) | A kind of buffering block assembly and vehicle | |
| CN202884072U (en) | Connecting and positioning device between valve shaft and valve plate of butterfly valve | |
| CN201711487U (en) | Improved upper die seat of forging die | |
| CN202412693U (en) | Drain board forming machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |
|
| CX01 | Expiry of patent term |