CN102829079A - Rigidity matching rubber supporting bearing - Google Patents
Rigidity matching rubber supporting bearing Download PDFInfo
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- CN102829079A CN102829079A CN2012103110108A CN201210311010A CN102829079A CN 102829079 A CN102829079 A CN 102829079A CN 2012103110108 A CN2012103110108 A CN 2012103110108A CN 201210311010 A CN201210311010 A CN 201210311010A CN 102829079 A CN102829079 A CN 102829079A
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Abstract
The invention belongs to an elastic bearing compound technology and relates to a rigidity matching rubber supporting bearing. The rigidity matching rubber supporting bearing comprises a small connector, a set of spherical metal spacers, a middle transition metal part, multiple layers of flat metal spacers, rubber layers between the metal spacers, and a big connector, wherein the spherical metal spacers and the small connector, the spherical metal spacers and the middle transition metal part, and the spherical metal spacers and the spherical metal spacers are all integrally spliced by vulcanizing the rubber layers; the flat metal spacers and the middle transition metal part, the flat metal spacers and the big connector, and the flat metal spacers and the flat metal spacers are also integrally spliced by vulcanizing the rubber layers; and a ratio of the total thickness of the spherical metal spacers to the total thickness of the flat metal spacers is 1.0-10.0. The rigidity matching rubber supporting bearing has the advantages that the rigidity matching for the compressing rigidity and the radial rigidity of the bearing is realized within a wider load scope, the structure is simple, the design is free and flexible, and the like.
Description
Technical field
The invention belongs to the resilient bearing complex technique, relate to a kind of rigidity and can mate the rubber bearing.
Background technique
All adopt vibration damping equipment in the lifting airscrew system; Usually adopt the resilient bearing structure to reduce the shimmy influence of rotor, can bear big centrifugal load and big and wave shimmy displacement, effectively reduce the vibration of fuselage fuselage; Avoid helicopter to produce ground resonance and aerial resonance; Improved the Security and the travelling comfort of helicopter greatly, in addition, the working life of adopting the resilient bearing structure can significantly improve blade and rotor system; Thereby prolonging the working life of complete machine, is the key function member in the rotor system.
Existing technology rigidity can be mated the rubber bearing and comprised rubber layer and banjo connector, middle transition metalwork between spherical metal partition, flat metal partition and the partition.Wherein, big joint is the flat metal structure, and slab construction glue-line total thickness is excessive to make that the resilient bearing radial rigidity is on the low side, and to the bigger occasion of rigidity requirement radially, this structure is difficult to satisfy simultaneously the designing requirement of radial rigidity and axial rigidity.
Summary of the invention
The objective of the invention is: propose a kind of compression stiffness and radial rigidity of can realizing and in big load range, realize the rubber bearing of coupling.
Technological scheme of the present invention is: a kind of rigidity can be mated the rubber bearing; It comprises little joint, one group of spherical metal partition, middle transition metalwork, several layers flat metal partition, big joint; Said spherical metal partition is integral by the spherical rubber layer is bonding, and each spherical metal partition is the same centre of sphere, and the spherical metal partition becomes big from little joint to area the middle transition metalwork gradually; Minimum spherical metal partition links to each other with little joint, maximum one deck spherical metal partition links to each other with the middle transition metalwork; Be bonded as one by dull and stereotyped rubber layer between the said flat metal partition, and flat metal partition one end that is bonded as one links to each other with the middle transition metalwork, the other end links to each other with big joint; Wherein, spherical rubber layer total thickness and dull and stereotyped rubber layer total thickness ratio are between 1.0～10.0.
The number of plies of said spherical metal partition is 4～10 layers, and the flat metal partition is 1～6 layer.
The thickness of said spherical metal partition, flat metal partition is 0.5mm～1.5mm, and thickness deviation is controlled at ± 0.1mm.
Spherical metal partition bondline thickness peace plate rubber layer thickness is 0.5mm～2.0mm.
Has a metal boss between big joint and the dull and stereotyped rubber layer.
The centermost of said big joint, little joint, spherical metal partition, flat metal partition and middle transition metalwork all has through hole, and each through hole is coaxial after integral body of the bonding one-tenth of glue-line.
Said each spherical rubber layer thickness should guarantee evenly and the same centre of sphere that each dull and stereotyped rubber layer thickness should guarantee evenly and be parallel to each other.
The spherical metal partition takes fillet to handle at the transition position of sphere and crimping, and interior circle radius R1 gets R0.5mm～R3mm, and exradius R2 gets R0.5mm～R4mm.
Advantage of the present invention is: rigidity of the present invention can be mated the rubber bearing and adopted multilayer ball bearing and multicolumn oblique crank Z to hold compound; Through control spherical metal partition, the number of plies of flat metal partition and the thickness of each glue-line; Keeping under the constant prerequisite of interface and apparent size, can be in big load range the coupling of realization compression stiffness and radial rigidity, satisfy the lifting airscrew system to the resilient bearing compression stiffness, wave the different designs requirement of rigidity, torsional stiffness and radial rigidity; And should design freedom and flexibility; Simple in structure, processing cost is low, and moulding is easy.
Description of drawings
Fig. 1 is the structural representation that rigidity of the present invention can be mated rubber bearing first mode of execution.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the worm's eye view of Fig. 1.
Fig. 4 is the A-A sectional view of Fig. 1.
Fig. 5 is a spherical metal partition crimping sectional view.
Fig. 6 is the structural representation that rigidity of the present invention can be mated rubber bearing second mode of execution.
Fig. 7 is the B-B sectional view of Fig. 6.
Wherein, the little joint of 1-, 2-spherical rubber layer, 3-spherical metal partition, 4-middle transition metalwork, the dull and stereotyped rubber layer of 5-, 6-flat metal partition, the big joint of 7-, 8-metal boss.
Embodiment
Explain further details in the face of the present invention down.
Referring to Fig. 1～Fig. 4, wherein, Fig. 1 is the structural representation that rigidity of the present invention can be mated rubber bearing first mode of execution, and Fig. 2 is the plan view of Fig. 1, and Fig. 3 is the worm's eye view of Fig. 1, and Fig. 4 is the A-A sectional view of Fig. 1.In this mode of execution, said rigidity can be mated the rubber bearing and comprised rubber layer and banjo connector, middle transition metalwork between one group of spherical metal partition, several layers flat metal partition and the partition.
Described one group of spherical metal partition 3 is after bonding being integral of spherical rubber layer 2 sulfuration; Each spherical metal partition is with the centre of sphere; The thickness of each spherical metal partition is uniform; The spherical metal partition becomes greatly from little joint to area the middle transition metalwork gradually, between minimum spherical metal partition and the little joint, reach between maximum one deck spherical metal partition and the middle transition metalwork between each spherical metal partition all through rubber layer through vulcanizing bonding being integral.
The thickness of described flat metal partition 6 is uniform; Through being parallel to each other between each partition after bonding being integral of dull and stereotyped rubber layer 5 sulfurations; And the flat metal partition of below is through rubber layer and the gluing mutually of middle transition metalwork; The flat metal partition of the top is glued mutually with big joint through rubber layer, and through bonding being integral of sulfuration.
The centermost of described big joint 7, little joint 1, spherical metal partition 3, flat metal partition 6 and middle transition metalwork 4 all has circular hole, and the center hole of all metalworks each metalwork after one of the bonding one-tenth of glue-line is whole is coaxial.
Described spherical rubber layer 2, dull and stereotyped rubber layer 5 thickness can be identical, also can be different, and each spherical rubber layer thickness should guarantee evenly and the same centre of sphere that each dull and stereotyped rubber layer 5 thickness should guarantee evenly and be parallel to each other.
The number of plies of said spherical metal partition is 4～10 layers, and the flat metal partition is 1～6 layer.The thickness of said spherical metal partition 3, flat metal partition 6 is 0.5mm～2mm, and thickness deviation is controlled at ± 0.1mm, and its material is stainless steel, alloyed steel, aluminum alloy or titanium alloy.The material of said big joint 7, little joint 1, middle transition metalwork 4 is stainless steel, aluminum alloy, titanium alloy.
Said spherical metal partition 3 should carry out the fillet processing at the transition position of sphere and crimping; As shown in Figure 5; The size of circle radius R1, exradius R2 under the condition that technology satisfies, should as far as possible reducing; Usually R1 gets R0.5mm～R3mm according to metalwork thickness and moulding process, and R2 gets R0.5mm～R4mm.
Working principle of the present invention is: the big joint 7 that rigidity can be mated the rubber bearing is connected with flexible beam with the bearing oversleeve of helicopter respectively with little joint 1.The dynamic load that the blade rotation causes is delivered to little joint through flexible beam, is delivered to big joint step by step through each rubber layer then, and the distortion of each rubber layer is played the buffering transitional function to dynamic load, thereby reduces the vibration of fuselage.Since the dynamic load that blade rotation causes show as when being delivered to the little joint of bearing bear simultaneously centrifugal, reverse, wave, complicacy stack alternate load that the footpath makes progress; Usually showing as rubber layer the working life of bearing fatigue crack occurs and deepens expansion gradually finally causing bearing failure; And the fatigue crack of rubber layer is in close relations with the equivalent strain under the stack alternate load, and the rigidity of a certain direction is too high, can influence the integral vibration damping performance of bearing; Rigidity is low excessively; Can cause the rubber layer strain excessive, reduce the working life of bearing, therefore all can provide the rigidity index request of all directions to bearing according to the actual dynamic load of blade; The present invention is under the prerequisite that satisfies bearing interface and basic apparent size; Through the ratio of control spherical metal partition glue-line total thickness and flat metal partition glue-line total thickness, realized the coupling of compression stiffness and radial rigidity in a big way, simultaneously to torsional stiffness with wave rigidity and do not have big influence; Can carry out flexible optimal design to the different-stiffness design objective that bearing proposes, satisfy the rigidity property designing requirement.
Embodiment one
A kind of rigidity can be mated the rubber bearing, like Fig. 1～shown in Figure 5.Little joint 1, big joint 7, middle transition metalwork 4 are aluminum alloy material; Spherical metal partition 3 is a stainless steel material; Thickness is 0.6mm, the thickness deviation scope is controlled at ± 0.1mm in, one group of spherical metal partition is 7; Increase step by step to middle transition metalwork area from little joint; Each spherical metal partition outer rim all has crimping, in forming process, comes accurate each spherical metal partition of control to keep the same centre of sphere, coaxial through crimping and centralized positioning pin to the partition location, thereby guarantees that each spherical rubber layer is even with the centre of sphere and thickness.
The dull and stereotyped circular partition that flat metal partition 6 is processed for stainless steel material; Thickness is 0.6mm; The thickness deviation scope is controlled at ± 0.1mm in; Each flat metal partition shape and size are all identical, 2 layers altogether of flat metal partitions, and the thickness evenness of each dull and stereotyped rubber layer and the parallelism between glue-line are by flat metal partition planeness and precise forming mold common guarantee.In addition, have a metal boss between big joint and the dull and stereotyped rubber layer, control dull and stereotyped rubber layer thickness to be used for regulating.
The bondline thickness that is connected with each spherical metal partition is identical, and the bondline thickness that is connected with each dull and stereotyped circular partition is identical, and spherical rubber layer 2 total thickness and dull and stereotyped rubber layer 5 total thickness ratios are 3.5.
The compression stiffness that test records this airframe bearing is 4660N/mm, and radial rigidity is 236N/mm, and the ratio of compression stiffness and radial rigidity is 19.7, can satisfy the Rigidity Matching designing requirement under the big radial load condition.
Embodiment two
A kind of rigidity can be mated the rubber bearing, like Fig. 6, shown in Figure 7.Little joint 1, big joint 7, middle transition metalwork 4 are aluminum alloy material; Spherical metal partition 3 is a stainless steel material; Thickness is 0.6mm, the thickness deviation scope is controlled at ± 0.1mm in, one group of spherical metal partition is 7; Increase step by step to middle transition metalwork area from little joint; Each spherical metal partition outer rim all has crimping, in forming process, comes accurate each spherical metal partition of control to keep the same centre of sphere, coaxial through crimping and centralized positioning pin to the partition location, thereby guarantees that each spherical rubber layer is even with the centre of sphere and thickness.
The dull and stereotyped circular partition that flat metal partition 6 is processed for stainless steel material; Thickness is 0.6mm; The thickness deviation scope is controlled at ± 0.1mm in; Each dull and stereotyped circular partition shape and size are all identical, 4 layers altogether of dull and stereotyped circular partitions, and the thickness evenness of each dull and stereotyped rubber layer and the parallelism between glue-line are by flat metal partition planeness and precise forming mold common guarantee.
The bondline thickness that is connected with each spherical metal partition is identical, and the bondline thickness that is connected with each dull and stereotyped circular partition is identical, and spherical rubber layer 2 total thickness and dull and stereotyped rubber layer 5 total thickness ratios are 1.5.
The compression stiffness that test records this airframe bearing is 3070N/mm, and radial rigidity is 120N/mm, and the ratio of compression stiffness and radial rigidity is 25.6, can satisfy the Rigidity Matching designing requirement under the less radial load condition.
Claims (8)
1. a rigidity can be mated the rubber bearing; It comprises little joint, one group of spherical metal partition, middle transition metalwork, several layers flat metal partition, big joint; Said spherical metal partition [3] is by bonding being integral of spherical rubber layer [2]; And each spherical metal partition is the same centre of sphere, and the spherical metal partition becomes greatly from little joint to area the middle transition metalwork gradually, and minimum spherical metal partition links to each other with little joint, maximum one deck spherical metal partition links to each other with the middle transition metalwork; Be bonded as one by dull and stereotyped rubber layer [5] between the said flat metal partition; And flat metal partition one end that is bonded as one links to each other with the middle transition metalwork, and the other end links to each other with big joint, it is characterized in that: spherical rubber layer [2] total thickness and dull and stereotyped rubber layer [5] total thickness ratio are between 1.0～10.0.
2. rigidity according to claim 1 can be mated the rubber bearing, it is characterized in that: the number of plies of said spherical metal partition is 4～10 layers, and the flat metal partition is 1～6 layer.
3. rigidity according to claim 2 can be mated the rubber bearing, it is characterized in that: the thickness of said spherical metal partition [3], flat metal partition [6] is 0.5mm～1.5mm, and thickness deviation is controlled at ± 0.1mm.
4. can mate the rubber bearing according to described each rigidity of claim 1 to 3, it is characterized in that: individual layer spherical metal partition bondline thickness peace plate rubber layer thickness is 0.5mm～2.0mm.
5. rigidity according to claim 4 can be mated the rubber bearing, it is characterized in that: have the metal boss between big joint and the dull and stereotyped rubber layer.
6. rigidity according to claim 4 can be mated the rubber bearing; It is characterized in that: the centermost of said big joint [7], little joint [1], spherical metal partition [3], flat metal partition [6] and middle transition metalwork [4] all has through hole, and each through hole is coaxial after integral body of the bonding one-tenth of glue-line.
7. rigidity according to claim 6 can be mated the rubber bearing, it is characterized in that: said each spherical rubber layer thickness should guarantee evenly and the same centre of sphere that each dull and stereotyped rubber layer [5] thickness should guarantee evenly and be parallel to each other.
8. rigidity according to claim 7 can be mated the rubber bearing, it is characterized in that, spherical metal partition [3] takes fillet to handle at the transition position of sphere and crimping, and R1 gets R0.5mm～R3mm, and R2 gets R0.5mm～R4mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210311010.8A CN102829079B (en) | 2012-08-28 | 2012-08-28 | Rigidity matching rubber supporting bearing |
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| CN201210311010.8A CN102829079B (en) | 2012-08-28 | 2012-08-28 | Rigidity matching rubber supporting bearing |
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| CN102829079A true CN102829079A (en) | 2012-12-19 |
| CN102829079B CN102829079B (en) | 2015-07-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632885A (en) * | 2014-12-03 | 2015-05-20 | 中国航空工业集团公司北京航空材料研究院 | Rubber elastic bearing |
| CN104890867A (en) * | 2015-04-27 | 2015-09-09 | 中国直升机设计研究所 | Design method capable of expanding air resonance security boundary of helicopter |
| 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 |
| CN110701186A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Combined elastic bearing |
Citations (5)
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|---|---|---|---|---|
| US4142833A (en) * | 1975-11-03 | 1979-03-06 | United Technologies Corporation | Elastomeric bearing for helicopter rotor |
| US5297874A (en) * | 1990-01-06 | 1994-03-29 | Dunlop Limited, A British Company | Elastomeric bearing |
| CN201513473U (en) * | 2009-09-17 | 2010-06-23 | 浙江省三门县世泰实业有限公司 | Elastic bearing |
| CN101936337A (en) * | 2010-09-10 | 2011-01-05 | 中国航空工业集团公司北京航空材料研究院 | Spherical elastic bearing for helicopter rotor wing and molding method thereof |
| CN202833642U (en) * | 2012-08-28 | 2013-03-27 | 中国航空工业集团公司北京航空材料研究院 | Rubber supporting bearing |
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2012
- 2012-08-28 CN CN201210311010.8A patent/CN102829079B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142833A (en) * | 1975-11-03 | 1979-03-06 | United Technologies Corporation | Elastomeric bearing for helicopter rotor |
| US5297874A (en) * | 1990-01-06 | 1994-03-29 | Dunlop Limited, A British Company | Elastomeric bearing |
| CN201513473U (en) * | 2009-09-17 | 2010-06-23 | 浙江省三门县世泰实业有限公司 | Elastic bearing |
| CN101936337A (en) * | 2010-09-10 | 2011-01-05 | 中国航空工业集团公司北京航空材料研究院 | Spherical elastic bearing for helicopter rotor wing and molding method thereof |
| CN202833642U (en) * | 2012-08-28 | 2013-03-27 | 中国航空工业集团公司北京航空材料研究院 | Rubber supporting bearing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632885A (en) * | 2014-12-03 | 2015-05-20 | 中国航空工业集团公司北京航空材料研究院 | Rubber elastic bearing |
| CN104890867A (en) * | 2015-04-27 | 2015-09-09 | 中国直升机设计研究所 | Design method capable of expanding air resonance security boundary of helicopter |
| 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 |
| CN110701186A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Combined elastic bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102829079B (en) | 2015-07-15 |
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Address after: 100095 box 81, Haidian District, Beijing Patentee after: AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS Address before: 100095 Beijing 81 mailbox in Haidian District, Beijing Patentee before: AVIC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS |
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Effective date of registration: 20210721 Address after: No. 5 Yongxiang North Road, Haidian District, Beijing 100094 Patentee after: Beijing Aeronautical Materials Research Institute Co.,Ltd. Address before: 100095 box 81, Haidian District, Beijing Patentee before: AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS |
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Address after: No. 5 Yongxiang North Road, Haidian District, Beijing 100094 Patentee after: Beijing Aviation Materials Research Institute Co.,Ltd. Address before: No. 5 Yongxiang North Road, Haidian District, Beijing 100094 Patentee before: Beijing Aeronautical Materials Research Institute Co.,Ltd. |
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