CN102829079B - Rigidity matching rubber supporting bearing - Google Patents
Rigidity matching rubber supporting bearing Download PDFInfo
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- CN102829079B CN102829079B CN201210311010.8A CN201210311010A CN102829079B CN 102829079 B CN102829079 B CN 102829079B CN 201210311010 A CN201210311010 A CN 201210311010A CN 102829079 B CN102829079 B CN 102829079B
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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 resilient bearing complex technique, relating to a kind of rigidity can Mate--rubber spring bearing.
Background technique
All vibration damping equipment is adopted in helicopter rotor system, usual employing resilient bearing structure reduces the shimmy impact on fuselage of rotor, large centrifugal load can be born and large wave shimmy displacement, effectively reduce the vibration of fuselage, helicopter is avoided to produce gruond and air resonance, substantially increase Security and the travelling comfort of helicopter, in addition, adopt resilient bearing structure significantly can improve the working life of blade and rotor system, thus extend the working life of complete machine, be the key functional members in rotor system.
Prior art rigidity can comprise rubber layer between spherical metal partition, flat metal partition and partition and banjo connector, transition metal part by Mate--rubber spring bearing.Wherein, large joint is flat metal structure, and the excessive resilient bearing radial rigidity that makes of slab construction glue-line total thickness is on the low side, the occasion larger to radial rigidity requirement, and this structure is difficult to the designing requirement simultaneously meeting radial rigidity and axial rigidity.
Summary of the invention
The object of the invention is: propose a kind of rubber bearing that can realize compression stiffness and radial rigidity and realize mating in larger load range.
Technological scheme of the present invention is: a kind of rigidity can Mate--rubber spring bearing, it comprises little joint, one group of spherical metal partition, transition metal part, some layers of flat metal partition, large joint, described spherical metal partition is bonding integral by spherical rubber layer, and each spherical metal partition is the same centre of sphere, spherical metal partition from little joint to transition metal part area become large gradually, minimum spherical metal partition is connected with little joint, maximum one deck spherical metal partition is connected with transition metal part, be bonded as one by dull and stereotyped rubber layer between described flat metal partition, and the flat metal partition one end be bonded as one is connected with transition metal part, the other end is connected 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 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 controls at ± 0.1mm.
Spherical metal partition bondline thickness peace plate rubber layer thickness is 0.5mm ~ 2.0mm.
Between large joint and dull and stereotyped rubber layer, there is metal bosses.
The center of described large joint, little joint, spherical metal partition, flat metal partition and transition metal part all has through hole, and after glue-line bonding one-tenth entirety, each through hole is coaxial.
Described each spherical rubber layer thickness should ensure the even and same centre of sphere, and each dull and stereotyped rubber layer thickness should ensure evenly and be parallel to each other.
Spherical metal partition takes fillet process at the transition position of sphere and crimping, and inner 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 adopt Multi-layer spherical bearing and multicolumn oblique crank Z to hold compound by Mate--rubber spring bearing, by controlling spherical metal partition, the number of plies of flat metal partition and the thickness of each glue-line, keeping under interface and the constant prerequisite of apparent size, the coupling of compression stiffness and radial rigidity can be realized in larger load range, meet helicopter rotor system to resilient bearing compression stiffness, wave rigidity, the different designs requirement of torsional stiffness and radial rigidity, and these design freedom and flexibility, structure is simple, processing cost is low, easily shaping.
Accompanying drawing explanation
Fig. 1 is that rigidity of the present invention can the structural representation of Mate--rubber spring 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 spherical metal partition crimping sectional view.
Fig. 6 is that rigidity of the present invention can the structural representation of Mate--rubber spring 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-transition metal part, the dull and stereotyped rubber layer of 5-, 6-flat metal partition, the large joint of 7-, 8-metal bosses.
Embodiment
Below the present invention is described in further details.
See Fig. 1 ~ Fig. 4, wherein, Fig. 1 is that rigidity of the present invention can the structural representation of Mate--rubber spring 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 present embodiment, described rigidity can comprise rubber layer between one group of spherical metal partition, some layers of flat metal partition and partition and banjo connector, transition metal part by Mate--rubber spring bearing.
One group of described spherical metal partition 3 is after spherical rubber layer 2 bonding by Vulcanization is integral, each spherical metal partition is with the centre of sphere, the thickness of each spherical metal partition is uniform, spherical metal partition from little joint to transition metal part area to become gradually between large, minimum spherical metal partition and little joint, between maximum one deck spherical metal partition and transition metal part and all integral through bonding by Vulcanization by rubber layer between each spherical metal partition.
The thickness of described flat metal partition 6 is uniform, be parallel to each other between each partition after dull and stereotyped rubber layer 5 bonding by Vulcanization is integral, and the flat metal partition of bottom is mutually cementing with transition metal part through rubber layer, the flat metal partition of the top is mutually cementing with large joint through rubber layer, and 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 part 4 all has circular hole, and the center hole of all metalworks each metalwork after glue-line bonding one-tenth entirety 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 ensure the even and same centre of sphere, and each dull and stereotyped rubber layer 5 thickness should ensure evenly and be parallel to each other.
The number of plies of described spherical metal partition is 4 ~ 10 layers, and 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 controls 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 part 4 is stainless steel, aluminum alloy, titanium alloy.
Described spherical metal partition 3 should carry out fillet process at the transition position of sphere and crimping, as shown in Figure 5, the size of inner circle radius R1, exradius R2 should be reduced under the condition that technique meets as far as possible, usual 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: rigidity can large joint 7 and the little joint 1 of Mate--rubber spring bearing be connected with the bearing oversleeve of helicopter and flexible beam respectively.Blade rotates the dynamic load caused and is delivered to little joint through flexible beam, is then delivered to large joint step by step through each rubber layer, and the distortion of each rubber layer plays buffering transitional function to dynamic load, thus reduces the vibration of fuselage.Due to blade rotate to show as when the dynamic load caused is delivered to bearing little joint bear simultaneously centrifugal, reverse, wave, complexity superposition alternate load in radial direction, the working life of bearing is usually expressed as rubber layer and occurs fatigue crack and deepen expansion gradually finally causing bearing failure, and the fatigue crack of rubber layer is in close relations with the equivalent strain superposed under alternate load, the rigidity of a direction is too high, the integral vibration damping performance of bearing can be affected, rigidity is too low, rubber layer can be caused to 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 present invention is under the prerequisite meeting bearing interface and basic apparent size, by controlling the ratio of spherical metal partition glue-line total thickness and flat metal partition glue-line total thickness, achieve the coupling of compression stiffness and radial rigidity in a big way, simultaneously on torsional stiffness with wave rigidity and there is no large impact, flexible optimal design can be carried out to the different-stiffness design objective that bearing proposes, meet rigidity property designing requirement.
Embodiment one
A kind of rigidity can Mate--rubber spring bearing, as shown in Fig. 1 ~ Fig. 5.Little joint 1, large joint 7, transition metal part 4 are aluminum alloy material, spherical metal partition 3 is stainless steel material, thickness is 0.6mm, thickness deviation scope control is within ± 0.1mm, one group of spherical metal partition is 7, increase step by step from little joint to transition metal part area, 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 to partition location keeps the same centre of sphere, coaxial, thus ensure each spherical rubber layer with the centre of sphere and thickness even.
The circular partition of flat board that flat metal partition 6 is made for stainless steel material, thickness is 0.6mm, thickness deviation scope control is within ± 0.1mm, each flat metal partition shape and size all identical, flat metal partition has 2 layers altogether, and the parallelism between the thickness evenness of each dull and stereotyped rubber layer and glue-line is by flat metal partition planeness and precise forming mold common guarantee.In addition, between large joint and dull and stereotyped rubber layer, there is metal bosses, for the dull and stereotyped rubber layer thickness of regulable control.
Connect when little joint 1 center has tapped hole for assembling, tapped hole runs through little joint 1, through hole is had at the center of other metalworks, central through bore and its outer rim of spherical metal partition 3, flat metal partition 6 should have good alignment, after rubber curing forming, the center hole of all metalworks keeps coaxial.
Identical with the bondline thickness that each spherical metal partition is connected, identical with the bondline thickness that the circular partition of each flat board is connected, spherical rubber layer 2 total thickness and dull and stereotyped rubber layer 5 total thickness ratio are 3.5.
Spherical metal partition 3 carries out fillet process at the transition position of sphere and crimping, and R1 is 2mm, R2 is 3mm.
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 meet the Rigidity Matching designing requirement under larger radial load condition.
Embodiment two
A kind of rigidity can Mate--rubber spring bearing, as shown in Figure 6, Figure 7.Little joint 1, large joint 7, transition metal part 4 are aluminum alloy material, spherical metal partition 3 is stainless steel material, thickness is 0.6mm, thickness deviation scope control is within ± 0.1mm, one group of spherical metal partition is 7, increase step by step from little joint to transition metal part area, 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 to partition location keeps the same centre of sphere, coaxial, thus ensure each spherical rubber layer with the centre of sphere and thickness even.
The circular partition of flat board that flat metal partition 6 is made for stainless steel material, thickness is 0.6mm, thickness deviation scope control is within ± 0.1mm, each flat board circular partition shape and size all identical, dull and stereotyped circular partition has 4 layers altogether, and the parallelism between the thickness evenness of each dull and stereotyped rubber layer and glue-line is by flat metal partition planeness and precise forming mold common guarantee.
Connect when little joint 1 center has tapped hole for assembling, tapped hole runs through little joint 1, through hole is had at the center of other metalworks, central through bore and its outer rim of spherical metal partition 3, dull and stereotyped circular partition 6 should have good alignment, after rubber curing forming, the center hole of all metalworks keeps coaxial.
Identical with the bondline thickness that each spherical metal partition is connected, identical with the bondline thickness that the circular partition of each flat board is connected, spherical rubber layer 2 total thickness and dull and stereotyped rubber layer 5 total thickness ratio are 1.5.
Spherical metal partition 3 has carried out fillet process at the transition position of sphere and crimping, and R1 is 2mm, R2 is 3mm.
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 meet the Rigidity Matching designing requirement under less radial load-up condition.
Claims (5)
1. a rigidity can Mate--rubber spring bearing, it comprises little joint, one group of spherical metal partition, transition metal part, some layers of flat metal partition, large joint, described spherical metal partition (3) is bonding integral by spherical rubber layer (2), and each spherical metal partition is the same centre of sphere, spherical metal partition from little joint to transition metal part area become large gradually, minimum spherical metal partition is connected with little joint, maximum one deck spherical metal partition is connected with transition metal part, be bonded as one by dull and stereotyped rubber layer (5) between described flat metal partition, and the flat metal partition one end be bonded as one is connected with transition metal part, the other end is connected 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, the number of plies of described spherical metal partition is 4 ~ 10 layers, flat metal partition is 1 ~ 6 layer, described spherical metal partition (3), the thickness of flat metal partition (6) is 0.5mm ~ 1.5mm, thickness deviation controls at ± 0.1mm, individual layer spherical metal partition bondline thickness peace plate rubber layer thickness is 0.5mm ~ 2.0mm.
2. rigidity according to claim 1 can Mate--rubber spring bearing, it is characterized in that: have metal bosses between joint and dull and stereotyped rubber layer greatly.
3. rigidity according to claim 2 can Mate--rubber spring bearing, 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 part (4) all has through hole, and after glue-line bonding one-tenth entirety, each through hole is coaxial.
4. rigidity according to claim 3 can Mate--rubber spring bearing, it is characterized in that: described each spherical rubber layer thickness should ensure the even and same centre of sphere, and each dull and stereotyped rubber layer (5) thickness should ensure evenly and be parallel to each other.
5. rigidity according to claim 4 can Mate--rubber spring bearing, and it is characterized in that, spherical metal partition (3) takes fillet process 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 CN102829079A (en) | 2012-12-19 |
| CN102829079B true CN102829079B (en) | 2015-07-15 |
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Families Citing this family (5)
| 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 |
| CN105757118B (en) * | 2015-12-08 | 2018-10-02 | 中国航空工业集团公司北京航空材料研究院 | A kind of anti-radial load long-life rubber bearing |
| CN110701186B (en) * | 2019-09-29 | 2021-02-09 | 中国航发北京航空材料研究院 | Combined elastic bearing |
| US12060148B2 (en) | 2022-08-16 | 2024-08-13 | Honeywell International Inc. | Ground resonance detection and warning system and method |
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 |
-
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 |
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| CN102829079A (en) | 2012-12-19 |
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