CN202833642U - Rubber supporting bearing - Google Patents
Rubber supporting bearing Download PDFInfo
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- CN202833642U CN202833642U CN 201220432358 CN201220432358U CN202833642U CN 202833642 U CN202833642 U CN 202833642U CN 201220432358 CN201220432358 CN 201220432358 CN 201220432358 U CN201220432358 U CN 201220432358U CN 202833642 U CN202833642 U CN 202833642U
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Abstract
The utility model belongs to elastic bearing composite technology and relates to a rubber supporting bearing which comprises a small connector, a group of spherical metal separating sheets, a middle transition metal part, a plurality of flat metal separating sheets, rubber layers between the separating sheets and a big connector. The rubber layers are connected between the spherical metal separating sheets and the small connector, between the spherical separating sheets and the middle transition metal part, and between the spherical separating sheets in an adhesive mode after vulcanization and then integrity is formed. The rubber layers are connected between the flat metal separating sheets and the middle transition metal part, between the flat metal separating sheets and the big connector, and between the flat metal separating sheets in an adhesive mode after vulcanization and then integrity is formed. The ratio between the whole thickness of the adhesion layers of the spherical metal separating sheets and the whole thickness of the adhesion layers of the flat metal separating sheets is between 1.0 and 10.0. The rubber supporting bearing has the advantages of enabling compression rigidity of the bearing to be matched with radial rigidity within a larger loading range and being simple in structure, free and flexible in design and the like.
Description
Technical field
The utility model belongs to the resilient bearing complex technique, relates to a kind of rubber bearing.
Background technique
All adopt vibration damping equipment in the lifting airscrew system, usually adopt the resilient bearing structure to reduce the shimmy impact on fuselage of rotor, can bear large centrifugal load and large wave shimmy displacement, effectively reduce the vibration of fuselage, avoid helicopter to produce gruond and air resonance, Security and the travelling comfort of helicopter have greatly been improved, 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.
Prior art rubber bearing comprises rubber layer between spherical metal partition, flat metal partition and the partition and banjo connector, transition metal spare.Wherein, large joint is the flat metal structure, and slab construction glue-line total thickness is excessive so that the resilient bearing radial rigidity is on the low side, and to the larger occasion of rigidity requirement radially, this structure is difficult to satisfy simultaneously the designing requirement of radial rigidity and axial rigidity.
The model utility content
The purpose of this utility model is: propose a kind of compression stiffness and radial rigidity of can realizing and realize the rubber bearing of coupling in a big way.
The technical solution of the utility model is: a kind of rubber bearing, it comprises little joint, one group of spherical metal partition, transition metal spare, some layers of flat metal partition, large joint, described spherical metal partition is integral by the spherical rubber layer is bonding, and spherical metal partition one end that is bonded as one links to each other with little joint, the other end links to each other with transition metal spare, be bonded as one by dull and stereotyped rubber layer between the described flat metal partition, and flat metal partition one end that is bonded as one links to each other with transition metal spare, the other end links to each other with large 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 described spherical metal partition is 4～10 layers, and the flat metal partition is 1～6 layer.
The thickness of described 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.
Each spherical metal partition is the same centre of sphere, the spherical metal partition becomes greatly to the area the middle transition metal structure gradually from little joint, between minimum spherical metal partition and the little joint, reach between each spherical partition between the maximum spherical partition of one deck and the middle transition metal structure and all be integral through bonding by Vulcanization by rubber layer.
Has a metal boss between large joint and the dull and stereotyped rubber layer.
The center of described large joint, little joint, spherical metal partition, flat metal partition and transition metal spare all has through hole, and each through hole is coaxial after integral body of the bonding one-tenth of glue-line.
Described 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 process at the transition position of sphere and crimping, and inner circle radius R 1 is got R0.5mm～R3mm, and exradius R2 gets R0.5mm～R4mm.
The utility model has the advantages that: the utility model rubber bearing adopts Multi-layer spherical bearing and multicolumn oblique crank Z to hold compound, by 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 in larger load range, realize the coupling of 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 of the utility model rubber bearing the 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 spherical metal partition crimping sectional view.
Fig. 6 is the structural representation of the utility model rubber bearing the 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-transition metal spare, the dull and stereotyped rubber layer of 5-, 6-flat metal partition, the large joint of 7-, 8-metal boss.
Embodiment
The below is described in further details the utility model.
Referring to Fig. 1～Fig. 4, wherein, Fig. 1 is the structural representation of the utility model rubber bearing the 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 the present embodiment, described rubber bearing comprises rubber layer between one group of spherical metal partition, some layers of flat metal partition and the partition and banjo connector, transition metal spare.
Described one group of spherical metal partition 3 is after spherical rubber layer 2 bonding by Vulcanization are integral, each spherical metal partition is with the centre of sphere, the thickness of each spherical metal partition is uniform, the spherical metal partition becomes gradually from little joint to area the transition metal spare greatly, between minimum spherical metal partition and the little joint, reach between each spherical metal partition between maximum one deck spherical metal partition and the transition metal spare and all be integral through bonding by Vulcanization by rubber layer.
The thickness of described flat metal partition 6 is uniform, after being integral, dull and stereotyped rubber layer 5 bonding by Vulcanizations are parallel to each other between each partition, and the flat metal partition of below is mutually cementing through rubber layer and transition metal spare, the flat metal partition of the top is mutually cementing with large joint through rubber layer, and is integral through bonding by Vulcanization.
The center of described large joint 7, little joint 1, spherical metal partition 3, flat metal partition 6 and transition metal spare 4 all has circular hole, and the center hole of all metalworks each metalwork after integral body of the bonding one-tenth of glue-line 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.But spherical rubber layer total thickness and dull and stereotyped rubber layer total thickness ratio are controlled between 1.0～10.0, thereby with in larger load range, realize the coupling of compression stiffness and radial rigidity.
The number of plies of described spherical metal partition is 4～10 layers, and the flat metal partition is 1～6 layer.The thickness of described 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 described large joint 7, little joint 1, transition metal spare 4 is stainless steel, aluminum alloy, titanium alloy.
Described spherical metal partition 3 should carry out the fillet processing at the transition position of sphere and crimping, as shown in Figure 5, under the condition that technique satisfies, should reduce the size of inner circle radius R 1, exradius R2 as far as possible, usually R1 gets R0.5mm～R3mm according to metalwork thickness and moulding process, and R2 gets R0.5mm～R4mm.
Working principle of the present utility model is: the large joint 7 of rubber bearing be connected joint 1 and be connected with flexible beam with the bearing oversleeve of helicopter respectively.The dynamic load that the blade rotation causes is delivered to little joint through flexible beam, then is delivered to step by step large joint through each rubber layer, 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, the complexity stack alternate load that the footpath makes progress, being usually expressed as rubber layer the working life of bearing fatigue crack occurs and deepens gradually expansion finally causing bearing failure, and the fatigue crack of rubber layer is in close relations with the equivalent strain under the stack alternate load, one party to rigidity too high, can affect the integral vibration damping performance of bearing, rigidity is excessively low, can cause the rubber layer strain excessive, reduce the working life of bearing, therefore all can provide the stiffness index requirement of all directions to bearing according to the actual dynamic load of blade, the utility model is under the prerequisite that satisfies bearing interface and basic apparent size, ratio by 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 on torsional stiffness with wave rigidity and do not have large impact, 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 rubber bearing is such as Fig. 1～shown in Figure 5.Little joint 1, large joint 7, transition metal spare 4 are aluminum alloy material, spherical metal partition 3 is stainless steel material, thickness is 0.6mm, the thickness deviation scope control is in ± 0.1mm, one group of spherical metal partition is 7, increase step by step to transition metal spare area from little joint, each spherical metal partition outer rim is all with crimping, in forming process, by crimping and centralized positioning pin each spherical metal partition is accurately controlled in the partition location and keep the same centre of sphere, coaxial, thereby guarantee that each spherical rubber layer is with the centre of sphere and even thickness.
The dull and stereotyped circular partition that flat metal partition 6 is made for stainless steel material, thickness is 0.6mm, the thickness deviation scope control is in ± 0.1mm, each flat metal partition shape and size are all identical, 2 layers altogether of flat metal partitions, 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 large 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 larger radial load condition.
Embodiment two
A kind of rubber bearing is such as Fig. 6, shown in Figure 7.Little joint 1, large joint 7, transition metal spare 4 are aluminum alloy material, spherical metal partition 3 is stainless steel material, thickness is 0.6mm, the thickness deviation scope control is in ± 0.1mm, one group of spherical metal partition is 7, increase step by step to transition metal spare area from little joint, each spherical metal partition outer rim is all with crimping, in forming process, by crimping and centralized positioning pin each spherical metal partition is accurately controlled in the partition location and keep the same centre of sphere, coaxial, thereby guarantee that each spherical rubber layer is with the centre of sphere and even thickness.
The dull and stereotyped circular partition that flat metal partition 6 is made for stainless steel material, thickness is 0.6mm, the thickness deviation scope control is in ± 0.1mm, each dull and stereotyped circular partition shape and size are all identical, 4 layers altogether of dull and stereotyped circular partitions, 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 than the Rigidity Matching designing requirement of path under the load-up condition.
Claims (9)
1. rubber bearing, it comprises little joint, one group of spherical metal partition, transition metal spare, some layers of flat metal partition, large joint, described spherical metal partition [3] is by bonding being integral of spherical rubber layer [2], and spherical metal partition one end that is bonded as one links to each other with little joint, the other end links to each other with transition metal spare, be bonded as one by dull and stereotyped rubber layer [5] between the described flat metal partition, and flat metal partition one end that is bonded as one links to each other with transition metal spare, the other end links to each other with large 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. rubber bearing according to claim 1, it is characterized in that: the number of plies of described spherical metal partition is 4～10 layers, the flat metal partition is 1～6 layer.
3. rubber bearing according to claim 2, it is characterized in that: the thickness of described spherical metal partition [3], flat metal partition [6] is 0.5mm～1.5mm, and thickness deviation is controlled at ± 0.1mm.
4. each rubber bearing according to claim 3 is characterized in that: individual layer spherical metal partition bondline thickness peace plate rubber layer thickness is 0.5mm～2.0mm.
5. according to claim 1 to 4 each described rubber bearings, it is characterized in that: each spherical metal partition is the same centre of sphere, the spherical metal partition becomes greatly to the area the middle transition metal structure gradually from little joint, between minimum spherical metal partition and the little joint, reach between each spherical partition between the maximum spherical partition of one deck and the middle transition metal structure and all be integral through bonding by Vulcanization by rubber layer.
6. rubber bearing according to claim 5 is characterized in that: have the metal boss between large joint and the dull and stereotyped rubber layer.
7. rubber bearing according to claim 6, it is characterized in that: the center of described large joint [7], little joint [1], spherical metal partition [3], flat metal partition [6] and transition metal spare [4] all has through hole, and each through hole is coaxial after integral body of the bonding one-tenth of glue-line.
8. rubber bearing according to claim 7 is characterized in that: described 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.
9. rubber bearing according to claim 7 is characterized in that, spherical metal partition [3] takes fillet to process at the transition position of sphere and crimping, and R1 gets R0.5mm～R3mm, and R2 gets R0.5mm～R4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220432358 CN202833642U (en) | 2012-08-28 | 2012-08-28 | Rubber supporting bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220432358 CN202833642U (en) | 2012-08-28 | 2012-08-28 | Rubber supporting bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833642U true CN202833642U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220432358 Expired - Lifetime CN202833642U (en) | 2012-08-28 | 2012-08-28 | Rubber supporting bearing |
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| CN (1) | CN202833642U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829079A (en) * | 2012-08-28 | 2012-12-19 | 中国航空工业集团公司北京航空材料研究院 | Rigidity matching rubber supporting bearing |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| US10330148B2 (en) | 2014-02-26 | 2019-06-25 | Airbus Helicopters Deutschland GmbH | Bearing arrangement with a first bearing layer and a second bearing layer |
-
2012
- 2012-08-28 CN CN 201220432358 patent/CN202833642U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829079A (en) * | 2012-08-28 | 2012-12-19 | 中国航空工业集团公司北京航空材料研究院 | Rigidity matching rubber supporting bearing |
| CN102829079B (en) * | 2012-08-28 | 2015-07-15 | 中国航空工业集团公司北京航空材料研究院 | Rigidity matching rubber supporting bearing |
| US10330148B2 (en) | 2014-02-26 | 2019-06-25 | Airbus Helicopters Deutschland GmbH | Bearing arrangement with a first bearing layer and a second bearing layer |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| CN104236906B (en) * | 2014-08-26 | 2017-06-23 | 中国直升机设计研究所 | A kind of tail-rotor spring bearing radial rigidity test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100095 box 81, Haidian District, Beijing Patentee after: AECC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS Address before: 100095 box 81, Haidian District, Beijing Patentee before: AVIC BEIJING INSTITUTE OF AERONAUTICAL MATERIALS |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210531 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 |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |