CN102011833A - Three-way steel net cushion vibration absorber - Google Patents
Three-way steel net cushion vibration absorber Download PDFInfo
- Publication number
- CN102011833A CN102011833A CN 201010583668 CN201010583668A CN102011833A CN 102011833 A CN102011833 A CN 102011833A CN 201010583668 CN201010583668 CN 201010583668 CN 201010583668 A CN201010583668 A CN 201010583668A CN 102011833 A CN102011833 A CN 102011833A
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- Prior art keywords
- damping
- vibration
- absorber
- net cushion
- steel wire
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 239000006096 absorbing agent Substances 0.000 title abstract description 7
- 238000013016 damping Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention is a special damping vibration absorber for AL-31 aircraft engines, which uses a steel wire net cushion as a core damping element and can perform damping vibration isolation on space direction-changing dynamic load. The steel net cushion vibration absorber is composed of an inner stop dog, a steel wire net cushion block, a frame transition shell, and installation elements of an original engine, such as an end-journal pin, a support board nut and the like are necessary to be locally processed without influencing stiffness. The end-journal pin is screwed with the inner stop dog and additionally tightened by a special nut. A connection with a thrust beam can be a screwed connection or a welded connection. The three-way steel net cushion vibration absorber has an effect of performing damping vibration isolation on space direction-changing dynamic load. On the one hand, the absorber has vibration isolation effect on high-frequency pumping in each direction, on the other hand, the absorber provides large damping for low-frequency pumping in each direction, so that vibration energy is consumed, amplitude is reduced, and damping vibration attenuation function is notable.
Description
Technical field
The present invention relates to a kind of design of the three-dimensional vibration damper based on the steel net pad damping member, this invention has carries out the effect of damping isolation to the space dynamic load of changing direction.
Background technique
The AL31 motor is a kind of outstanding aeroengine, is used for the russian aircraft of multiple model.But what follow its huge thrust is bigger vibration and noise, and this not only influences riding comfort, also can cause the damage of onboard instrument equipment and the reduction in working life.Even more important influence is that strong vibration can make housing construction owing to being in for a long time fatigue fracture take place under the alternating stress effect.The steel net pad vibration damper is a kind of nonlinear vibration reduction element with dry friction damping characteristics, and advantage is to bear large deformation, has impact resistance.Have anti-oily, anticorrosive, advantages such as temperature resistance is poor, moisture-resistant degree, ageing-resistant, easy care simultaneously, be applicable to the rugged environment that aeroengine is installed and used.But existing steel net pad vibration damper can only unidirectional stand under load, can not carry out damping vibration attenuation to the space dynamic load of changing direction.
Summary of the invention
The present invention is directed to existing steel net pad vibration damper and can not propose a kind of design proposal of three-dimensional steel net pad vibration damper change direction problem that dynamic load carries out damping vibration attenuation of space.Have the space dynamic load of changing direction is carried out the effect of damping isolation.One aspect of the present invention has vibration isolating effect to the high frequency pumping of all directions, and the low-frequency excitation to all directions provides big damping on the other hand, consumes vibrational energy, reduces amplitude, and damping vibration attenuation function is remarkable.
Technological scheme of the present invention is: a kind of three-dimensional steel net pad vibration damper, it is characterized in that: comprise the end journal pin and be set in internal stop, steel wire cushion block and fuselage transitional shell on the end journal pin, described internal stop is 2 and is arranged on the axial two ends of steel wire cushion block, in the described fuselage transitional shell of radially being provided with of steel wire cushion block.
Core parts of the present invention are to use the steel net pad of excellent performance, and its damping vibration attenuation performance mainly is to be caused by the friction between steel wire, can consumed energy in when vibration, reach effectiveness in vibration suppression.The steel net pad vibration damper belongs to the nonlinear vibration reduction device with dry friction hysteretic damping characteristic, bigger friction hysteretic damping can be provided in the frequency band of broad, also has soft-sclerosis rigidity, under unexpected big excitation, because the stiffness variation of element, the natural frequency of structure is changed, thereby suppress mesomerism.
The present invention is provided with internal stop and fuselage transitional shell at the axial two ends and the radial outside of steel net pad, when motor has when end journal pin direction is vibrated, because the end journal pin links to each other with internal stop, push, loosen steel net pad by internal stop and fuselage transitional shell, cause friction energy-dissipating between steel wire, produce damping function; When motor has the vibration of vertical end journal pin direction, directly with the fuselage transitional shell push, loosen steel net pad by the end journal pin, cause friction energy-dissipating between steel wire, produce damping function.
Beneficial effect of the present invention: 1, design at the mounting structure of AL-31 Engine Series specially, three-dimensional absorbs vibrational energy, can carry out damping isolation to the space dynamic load of changing direction, and is specially adapted to the aviation vector engine and hangs vibration damping is installed; 2, one side has vibration isolating effect to the high frequency pumping of all directions, and the low-frequency excitation to all directions provides big damping on the other hand, consumes vibrational energy, reduces amplitude, and damping vibration attenuation function is remarkable; 3, compare with traditional rubber shock absorber, the present invention has anti-oily, anticorrosive, advantages such as temperature resistance is poor, moisture-resistant degree, ageing-resistant, easy care, can be used for the airplane engine installation vibration damping under the mal-condition.
Description of drawings
Fig. 1 is the general assembly drawing of three-dimensional vibration damper of the present invention.
Fig. 2 is the structural representation of end journal pin of the present invention.
Fig. 3 is the structural representation of internal stop.
Fig. 4 is the structural representation of fuselage transitional shell.
Fig. 5 is the structural representation of steel net pad.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is elaborated, as shown in Figure 1, three-dimensional steel net pad vibration damper of the present invention, comprise end journal pin 1 and be set in internal stop 2, steel wire cushion block 5 and fuselage transitional shell 3 on the end journal pin 1, wherein internal stop 2 is 2 and is arranged on the axial two ends of steel wire cushion block 5, at steel wire cushion block 5 fuselage transitional shell 3 is set radially, be processed with outside thread on end journal pin 1, internal stop 2 is fixing by plate nut 4 and specialized nut 6.
The general assembly implementation process:
1) 3 li of fuselage transitional shell, put into an internal stop 2 and a steel wire cushion block 5, in the middle of them, penetrate end journal pin 1;
2) put into a steel wire cushion block 5 and an internal stop 2 more successively on fuselage transitional shell 3 right sides;
3) install specialized nut 6 in end journal pin 1 left side, install plate nut 4 on end journal pin 1 right side, wherein plate nut 4 is the installation part, and so far, assembling is finished.
Claims (2)
1. three-dimensional steel net pad vibration damper, it is characterized in that: comprise the end journal pin and be set in internal stop, steel wire cushion block and fuselage transitional shell on the end journal pin, described internal stop is 2 and is arranged on the axial two ends of steel wire cushion block, in the described fuselage transitional shell of radially being provided with of steel wire cushion block.
2. three-dimensional steel net pad vibration damper according to claim 1 is characterized in that: described internal stop is fixed on the described end journal pin by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010583668 CN102011833A (en) | 2010-12-13 | 2010-12-13 | Three-way steel net cushion vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010583668 CN102011833A (en) | 2010-12-13 | 2010-12-13 | Three-way steel net cushion vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102011833A true CN102011833A (en) | 2011-04-13 |
Family
ID=43842118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010583668 Pending CN102011833A (en) | 2010-12-13 | 2010-12-13 | Three-way steel net cushion vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102011833A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100667A (en) * | 2014-05-26 | 2014-10-15 | 北京航天控制仪器研究所 | Single cylindrical multi-directional constant-stiffness all-metal vibration absorber |
| CN105424071A (en) * | 2015-12-12 | 2016-03-23 | 航宇救生装备有限公司 | Novel rocket sled damping device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10131962A (en) * | 1996-08-15 | 1998-05-22 | Schenck Rotec Gmbh | Bearing device |
| CN2605198Y (en) * | 2003-03-28 | 2004-03-03 | 哈尔滨工业大学 | Metal-rubber vibration isolator for pipeline support for aircraft engine |
| DE202005004649U1 (en) * | 2005-03-17 | 2005-06-16 | Takata-Petri Ag | Vibration-damped vehicle steering wheel contains movable vibration damper with shock absorber means set between movable body and end of container |
| CN201110137Y (en) * | 2007-12-14 | 2008-09-03 | 赵景军 | Metallic rubber bidirectional welldrilling damper |
-
2010
- 2010-12-13 CN CN 201010583668 patent/CN102011833A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10131962A (en) * | 1996-08-15 | 1998-05-22 | Schenck Rotec Gmbh | Bearing device |
| CN2605198Y (en) * | 2003-03-28 | 2004-03-03 | 哈尔滨工业大学 | Metal-rubber vibration isolator for pipeline support for aircraft engine |
| DE202005004649U1 (en) * | 2005-03-17 | 2005-06-16 | Takata-Petri Ag | Vibration-damped vehicle steering wheel contains movable vibration damper with shock absorber means set between movable body and end of container |
| CN201110137Y (en) * | 2007-12-14 | 2008-09-03 | 赵景军 | Metallic rubber bidirectional welldrilling damper |
Non-Patent Citations (2)
| Title |
|---|
| 《航空学报》 20081130 邓吉宏,王轲,陈国平等 金属橡胶减振器用于发动机安装减振的研究 第29卷, 第6期 2 * |
| 《飞机设计》 20070630 杨广双,陈忠明 金属橡胶减振器在发动机安装时的减振设计研究 第27卷, 第3期 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100667A (en) * | 2014-05-26 | 2014-10-15 | 北京航天控制仪器研究所 | Single cylindrical multi-directional constant-stiffness all-metal vibration absorber |
| CN105424071A (en) * | 2015-12-12 | 2016-03-23 | 航宇救生装备有限公司 | Novel rocket sled damping device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |