CN102720787B - Multilayer-laminated damper - Google Patents
Multilayer-laminated damper Download PDFInfo
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- CN102720787B CN102720787B CN 201210193796 CN201210193796A CN102720787B CN 102720787 B CN102720787 B CN 102720787B CN 201210193796 CN201210193796 CN 201210193796 CN 201210193796 A CN201210193796 A CN 201210193796A CN 102720787 B CN102720787 B CN 102720787B
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Abstract
The invention discloses a multilayer-laminated damper which is formed by nesting a plurality of concentric cylindrical steel rings made of multiple layers of coiled thin steel sheets. The thin steel sheets can be made of structural steel or spring steel. Each thin steel sheet which is unfolded is rectangular, and is cylindrical after being coiled. The joint of each coiled cylindrical steel sheet can be closed or open. The nesting way requires the fact that length difference of each two adjacent rectangular steel sheets is 2Pi times of the thickness of each steel sheet. Mounting positional angles of the joints need to be peripherally arranged at equal angular intervals according to the number of layers of the steel sheets. When the number of the layers of the steel sheets is an integral multiple of 4, the mounting positional angles of the joints can be arranged at intervals of 90 degrees sequentially. The multilayer-laminated damper is simple in structure, convenient to mount, reliable in performance and capable of meeting shock absorption needs of a rotor system under different work conditions.
Description
Technical field
The invention belongs to the rotor dynamic mechanical damping technical field, relate to a kind of multi-layer stacks formula damping shock absorber, specifically, refer to a kind of damping device that is used in aeroengine or gas turbine rotor system.
Background technique
In the rotor dynamic mechanical design, the rotor Vibration Absorption Designing is to concern one of key technology of overall design success or not.In modern designs, adopt yielding support to be combined with various vibration damping structures, to guarantee the stability of working rotor more.According to vibration control method, can be divided into two kinds of ACTIVE CONTROL and passive vibration dampings.The former often need to carry out Real-Time Monitoring, state anticipation, measure prevention and control etc. to the rotor state in conjunction with electric controller, reaches the effect that suppresses in advance vibration.It is with high costs, and there is no at present the ripe case of using.The latter mainly uses the principle of Damping work vibrational energy, after making every effort to the vibration generation, calms down at short notice vibration.Its structural type that adopts is varied, is the vibration damping means of present extensive use.And for the selection of the structure of concrete vibration damping, except reaching the vibration damping purpose, the standard of considering is as the criterion mainly with cost, installation, reliability, durability etc.Vibration damping structure involved in the present invention, easy to process, simple in structure, simple installation, reliability are high, good endurance, are fit to high frequency rotor mechanical vibration damping and use, and have higher construction value.
Summary of the invention
Purpose of the present invention, horn of plenty rotor vibration damping structure design experiences provides a kind of with low cost, simple installation, reliable, durable multi-layer stacks formula damping shock absorber solution.This scheme is applicable to high frequency rotor mechanical vibration damping, and described structure can be used as the reference in engineering design.
The present invention realizes that the technological scheme that above-mentioned technical purpose is taked is:
A kind of multi-layer stacks formula damping shock absorber, integral body is structure ringwise, described stacked damping shock absorber is arranged between the radial bearing and yielding support of rotor structure, its inner ring and radial bearing are installed by interference fit, outer ring and yielding support are installed by transition fit, it is characterized in that, described stacked damping shock absorber comprises all a plurality of concentric circle tubbiness steel rings of rolling into of identical stalloy of multi-layered thickness and width, and described a plurality of concentric circle tubbiness steel ring mutual sheathing setting and radially stacking gradually forms; Every layer of barrel-shaped steel ring launches rectangular steel disc, and the length difference of adjacent two layers rectangle steel disc is 2 π times of steel plate thickness; The described steel disc number of plies is the integral multiple of natural number four; Every layer of barrel-shaped steel ring all has an interface, and the installation position angle of the interface of all barrel-shaped steel rings is interval 90 degree successively, or according to the steel disc number of plies, along the circumferential direction uniformly-spaced the angle distributes.
Preferably, the described steel disc number of plies also can be for greater than 4 natural number, but is not four integral multiple, and the installation position angle of the interface of all steel rings is according to the steel disc number of plies, and along the circumferential direction uniformly-spaced the angle distributes.
Preferably, described stalloy material can be structural steel, can be also spring steel; Preferably, described stalloy profile, individual layer expands into rectangle, is barrel-shaped after rolling; Simple in structure, easy to process, the process-cycle is short, has guaranteed universality and the low time cost of product processing.
The described barrel-shaped steel ring that rolls into, its jointing can be closed type, can be also open type; These two kinds of different interface shapes can provide different damping properties.The closed type structure has larger rigidity, and relatively little damping is fit to relative low frequency rotor and uses; The open type structure has larger elasticity, and higher damping is more suitable for light-duty high frequency rotor and uses.
Described suit assembling mode needs 2 π that adjacent monolayer rectangle steel sheet length differs steel plate thickness doubly; Satisfying of this condition guaranteed between a plurality of steel discs perfectly stickiness, can strengthen structure stability, prevents the steel disc movement that in use misplaces, and maximum area of contact also can be provided, and guarantees good damping characteristic.The installation position angle of described interface should be according to the steel disc number of plies, and along the circumferential direction uniformly-spaced install at the angle; Uniformly-spaced install at the angle, is in order to guarantee the isotropy of damper structure integral dynamic properties, makes that the system dynamic characteristic is continual and steady, structural parameter are convenient adjustable.The described steel disc number of plies should be the integral multiple of natural number four.The rotor cross section is circular design, and according to circular both direction, four modes of limitting mutually, the steel disc number of plies is elected four integral multiple as, can reach to greatest extent isotropic uniformity, and this principle is replenishing of " uniformly-spaced angle installation " measure and extends.When the steel disc number of plies was the integral multiple of natural number four, total interface uniformly-spaced angle evenly distributed, and also interval 90 is spent successively, so also can satisfy simultaneously structure isotropy, easy-to-install requirement.
The variation of the form of multi-layer stacks jointing makes damper vibration damping mechanism that variation also occur, and then has obtained the different result of damping vibration attenuation performance.For the closed type structure, mainly rely on the Coulomb damping between lamination to carry out vibration damping; The structural damping that the radial deformation of whole damper provides is auxiliary, and its effect is comparatively small, only just can relatively improve its vibration damping contribution amount when heavy type, low frequency rotor.And the open type structure has weakened the rigidity of every laminates opening, has increased the radial deformation of this place's lamination, make the structural damping utilization ratio obtain significantly promoting, and do not weaken the effectiveness in vibration suppression of Coulomb damping, and namely rely on simultaneously two kinds of dampings sources, greatly improved the damping vibration attenuation effect.Openings of sizes can be adjusted according to threshold frequency and the frequency of okperation of rotor, and opening is larger, more suitable low frequency rotor; Opening is less, more suitable high frequency rotor.In addition, the lamination number of plies is more, and the damper integral dynamic properties is more even, stable.
Preferably, multi-layer stacks formula damping shock absorber of the present invention is arranged on the rotor of 0-2-0 supporting form.
Description of drawings
Fig. 1 multi-layer stacks formula damping shock absorber is used erection drawing;
Fig. 2 individual layer closed type lamination planimetric map;
Fig. 3 multilayer closed type lamination sectional view;
Fig. 4 individual layer open type lamination planimetric map;
Fig. 5 multilayer closed type lamination sectional view;
Fig. 6 lamination length schematic diagram that successively decreases.
Embodiment
For making purpose of the present invention, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The below describes for two example two for two kinds of lamination interface modes.The corresponding open type structure of difference and closed type structure, the lamination number of plies is take 8 layers as example.
The invention provides a kind of multi-layer stacks formula damping shock absorber, integral body is structure ringwise, and described stacked damping shock absorber is arranged on the rotor of certain 0-2-0 supporting form, as shown in Figure 1.Multi-layer stacks formula damping shock absorber 5 is arranged between the outer ring and yielding support 3 of radial bearing 4, and its inner ring and radial bearing 4 are installed by interference fit, and outer ring and yielding support 3 are installed by transition fit.
Embodiment 1: the closed type interface structure
As shown in Figure 2 and Figure 3, described stacked damping shock absorber 5 rolls into a plurality of concentric circle tubbiness steel rings by the multi-layer thin steel disc, and suit forms; Described stalloy material can be structural steel, can be also spring steel; Described stalloy profile, as shown in Figure 2, individual layer expands into rectangle 502; After rolling, the cross section is barrel-shaped 501; Its jointing is closed type; Described suit assembling mode needs 2 π that adjacent monolayer rectangle steel sheet length differs steel plate thickness doubly, and as shown in Figure 6, wherein, 4n is the lamination number of plies, and n is natural number, and t is the individual layer lamination thickness; The installation position angle of described interface should be according to the steel disc number of plies, and along the circumferential direction uniformly-spaced install at the angle, as shown in Figure 3; The lamination number of plies is 8, evenly 360 °, interval/8=45 ° of jointing established angle, also can be as shown in Figure 3 interval 90 degree successively, so also can satisfy simultaneously structure isotropy, easy-to-install requirement, interface position is as shown in 505～512.The described steel disc number of plies should be the integral multiple of natural number four, as shown in Figure 6.
The closed type structure has larger rigidity, and relatively little damping is fit to relative low frequency rotor and uses.
Embodiment 2: the open type interface structure
This routine described structure difference from Example 1 only is individual layer lamination interface shape, as shown in Figure 4.The individual layer lamination expands into rectangle 504, is shaped as after rolling to be with jaggy barrel-shapedly, and jointing is opening 503.As shown in Figure 5, the multi-layer stacks formula damping shock absorber 5 of open type interface structure of the present invention, its lamination number of plies is 8, evenly 360 °, interval/8=45 ° of jointing established angle, also can be as shown in Figure 5 interval 90 degree successively, interface position so also can satisfy structure isotropy, easy-to-install requirement simultaneously as shown in 513～520.The described steel disc number of plies should be the integral multiple of natural number four, as shown in Figure 6.
The open type structure has larger elasticity, and higher damping is more suitable for light-duty high frequency rotor and uses.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of the present invention.
Claims (8)
1. multi-layer stacks formula damping shock absorber, integral body is structure ringwise, described stacked damping shock absorber is arranged between the radial bearing and yielding support of rotor structure, its inner ring and radial bearing are installed by interference fit, outer ring and yielding support are installed by transition fit, it is characterized in that, described stacked damping shock absorber comprises all a plurality of concentric circle tubbiness steel rings of rolling into of identical stalloy of multi-layered thickness and width, and described a plurality of concentric circle tubbiness steel ring mutual sheathing setting and radially stacking gradually forms; Every layer of barrel-shaped steel ring launches rectangular steel disc, and the length difference of adjacent two layers rectangle steel disc is 2 π times of steel plate thickness; The described steel disc number of plies is the integral multiple of natural number four; Every layer of barrel-shaped steel ring all has an interface, and the installation position angle of the interface of all barrel-shaped steel rings is interval 90 degree successively, or according to the steel disc number of plies along the circumferential direction uniformly-spaced the angle distribute.
2. multi-layer stacks formula damping shock absorber according to claim 1, it is characterized in that: the described steel disc number of plies is the natural number greater than 4, but be not four integral multiple, the installation position angle of the interface of all barrel-shaped steel rings is according to the steel disc number of plies, and along the circumferential direction uniformly-spaced the angle distributes.
3. multi-layer stacks formula damping shock absorber according to claim 1 and 2 is characterized in that: described stalloy material, select structural steel.
4. multi-layer stacks formula damping shock absorber according to claim 1 and 2 is characterized in that: described stalloy profile, individual layer expands into rectangle, after rolling for barrel-shaped.
5. multi-layer stacks formula damping shock absorber according to claim 1 and 2, it is characterized in that: the interface of every layer of barrel-shaped steel ring, its jointing can be closed types, can be also open types.
6. multi-layer stacks formula damping shock absorber according to claim 5, it is characterized in that: when described jointing was closed type, described multi-layer stacks formula damping shock absorber was fit to the low frequency rotor.
7. multi-layer stacks formula damping shock absorber according to claim 5, it is characterized in that: when described jointing was open type, described multi-layer stacks formula damping shock absorber was fit to the high frequency rotor.
8. multi-layer stacks formula damping shock absorber according to claim 7, it is characterized in that: for the open type interface, the size of described opening is adjusted according to threshold frequency and the frequency of okperation of rotor.
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| CN 201210193796 CN102720787B (en) | 2012-06-12 | 2012-06-12 | Multilayer-laminated damper |
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| CN104406779B (en) * | 2014-11-14 | 2017-05-10 | 中国航空动力机械研究所 | Laminated sheet twist-locking device |
| WO2016141878A1 (en) * | 2015-03-10 | 2016-09-15 | 艾默生环境优化技术(苏州)有限公司 | Vibration isolator and compressor system comprising same |
| CN109927754B (en) * | 2017-12-15 | 2020-12-01 | 株洲飞马橡胶实业有限公司 | Integral type buffering mechanism used on car coupler buffer |
| CN109927748B (en) * | 2017-12-15 | 2020-11-17 | 株洲飞马橡胶实业有限公司 | Annular buffer device for car coupler buffer |
| CN109927753B (en) * | 2017-12-15 | 2020-11-17 | 株洲飞马橡胶实业有限公司 | Annular coupler buffer |
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| HU190300B (en) * | 1984-05-22 | 1986-08-28 | Budapesti Mueszaki Egyetem,Hu | Device for realizing progressive amortization serving for decreasing the seizmic stress of constructions |
| RU2025603C1 (en) * | 1992-02-04 | 1994-12-30 | Николай Николаевич Рахманов | Flexible support |
| DE19908915B4 (en) * | 1999-03-02 | 2007-04-05 | Carl Freudenberg Kg | Vibration damper for a steering wheel with an airbag |
| JP2001173702A (en) * | 1999-12-16 | 2001-06-26 | Nakagawa Electric Ind Co Ltd | Rotary damper |
| CN101571056B (en) * | 2009-06-09 | 2011-05-18 | 北京航空航天大学 | Miniature rotor dynamic mechanical damping structure |
| CN202068268U (en) * | 2011-05-06 | 2011-12-07 | 佛山市顺德区盈富达微电机有限公司 | Shock-absorbing type micro motor |
| CN202674134U (en) * | 2012-06-12 | 2013-01-16 | 中国科学院工程热物理研究所 | Multi-layer laminated damper |
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