CN104179867B - For the buffer limiter of electromagnetism vibration isolator - Google Patents
For the buffer limiter of electromagnetism vibration isolator Download PDFInfo
- Publication number
- CN104179867B CN104179867B CN201410360144.8A CN201410360144A CN104179867B CN 104179867 B CN104179867 B CN 104179867B CN 201410360144 A CN201410360144 A CN 201410360144A CN 104179867 B CN104179867 B CN 104179867B
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- Prior art keywords
- vibration isolator
- damping spring
- electromagnetism vibration
- limiting
- electromagnetism
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- 238000013016 damping Methods 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 5
- 230000003116 impacting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
For the buffer limiter of electromagnetism vibration isolator, it relates to a kind of buffer limiter.The invention solves electromagnetism vibration isolator to be launched the impact force in stage and to destroy, electromagnetism vibration isolator does not have the problem of effective protective measure.Limiting board is processed with central through bore, one end face of limiting board is processed with circular arc concave surface, limited ring is between two limiting boards, the circular arc concave surface of two limiting boards is oppositely arranged on the top of electromagnetism vibration isolator, damping spring and two limit spring are positioned at the space that two limiting boards are formed, damping spring is arranged on the stud of electromagnetism vibration isolator by two limit spring, and two limiting boards are installed on stud and two limiting boards do not contact with stud.Buffer limiter of the present invention is used for the buffer protection of electromagnetism vibration isolator.
Description
Technical field
The present invention relates to a kind of buffer limiter, be specifically related to a kind of buffer limiter for electromagnetism vibration isolator.
Background technique
The useful load carried for avoiding spacecraft causes normally working due to the vibration caused by External Force Acting, usually between aircraft and useful load, add isolation mounting, isolate the transmission of vibration to useful load of various moving element on aircraft as far as possible.Because payload mass is comparatively light, the disturbance magnitude of aircraft to useful load is very little, and the design rigidity of usual vibration isolator is very little.Aircraft is then completely contrary at the mechanical environment of launching phase, and impact force will reach thousands of times of vibration in orbit.In this case very great meaning has just been had to the buffer limit of vibration isolator.
For the problems referred to above; and consider in aerospace engineering the small volume of vibration isolator, the rigors of lightweight; devise a kind of buffering stop block; at utmost to reduce associated mass and the size of vibration isolator; and effective protective action is played to vibration isolator, make it normally can work according to design parameter and index after launching phase.
Summary of the invention
The present invention is destroyed by solution electromagnetism vibration isolator is launched the impact force in stage, and electromagnetism vibration isolator does not have the problem of effective protective measure, and then provides a kind of buffer limiter for electromagnetism vibration isolator.
The present invention solves the problems of the technologies described above the technological scheme taked to be:
Buffer limiter for electromagnetism vibration isolator of the present invention comprises limited ring, damping spring, two limit spring and two limiting boards, limiting board is disc-shape, limiting board is processed with central through bore, one end face of limiting board is processed with circular arc concave surface, limited ring is between two limiting boards, the circular arc concave surface of two limiting boards is oppositely arranged on the top of electromagnetism vibration isolator, damping spring and two limit spring are positioned at the space that two limiting boards are formed, damping spring is arranged on the stud of electromagnetism vibration isolator by two limit spring, two limiting boards are installed on stud and two limiting boards do not contact with stud.
The invention has the beneficial effects as follows:
Two limiting boards of the buffer limiter for electromagnetism vibration isolator of the present invention are fixed on the top of electromagnetism vibration isolator, damping spring is arranged on the stud of electromagnetism vibration isolator by two limit spring, damping spring together moves along with the mover of vibration isolator, electromagnetism vibration isolator be subject to comparatively strong impact force time, damping spring edge first touches the surface of contact of limiting board, along with the continuous increase of the relative displacement of vibration isolator mover, the contact face radius of damping spring and limiting board is more and more less, and rigidity is increasing; When the relative displacement of vibration isolator mover reaches design limit; limit spring contacts completely with the surface of contact of limiting board; great rigidity is provided; thus stop mover to continue relative movement; when effectively protecting electromagnetism vibration isolator to be subject to greater impact load, displacement exceeds design runlength and causes electromagnetism vibration isolator permanent damages, and the present invention can provide and to be cushioned impact by little and large stiffness variable and to limit maximum displacement.
Accompanying drawing explanation
Fig. 1 is the front sectional view of the buffer limiter for electromagnetism vibration isolator of the present invention, and Fig. 2 is the overall structure figure that buffer limiter of the present invention is arranged on electromagnetism vibration isolator.
Embodiment
Embodiment one: as shown in Fig. 1 ~ 2, a kind of buffer limiter for electromagnetism vibration isolator of present embodiment, it is characterized in that: described buffer limiter comprises limited ring 22, damping spring 13, two limit spring 14 and two limiting boards 15, limiting board 15 is in disc-shape, limiting board 15 is processed with central through bore, one end face of limiting board 15 is processed with circular arc concave surface, limited ring 22 is between two limiting boards 15, the circular arc concave surface of two limiting boards 15 is oppositely arranged on the top of electromagnetism vibration isolator, damping spring 13 and two limit spring 14 are positioned at the space that two limiting boards 15 are formed, damping spring 13 is arranged on the stud 11 of electromagnetism vibration isolator by two limit spring 14, two limiting boards 15 are installed on stud 11 and two limiting boards 15 do not contact with stud 11.
Electromagnetism vibration isolator of the present invention comprises permanent magnet 1, lower yoke 3, outer yoke 4, upper magnet yoke 5, lower cylinder 8, linear bearing 2, plate-shaped springs 9, coil 21, coil carrier 6, stud 11, cylindrical guide 16 and two upper cylinders 12, outer yoke 4 is tubular, lower yoke 3 is packed on the lower end surface of outer yoke 4, permanent magnet 1 is positioned on the upper-end surface of lower yoke 3, linear bearing 2 is vertically arranged on permanent magnet 1 upper-end surface, upper magnet yoke 5 to be positioned on permanent magnet 1 upper-end surface and to be sleeved on linear bearing 2, plate-shaped springs 9 is by upper cylinder 12, lower cylinder 8 is arranged on the top of outer yoke 4, coil carrier 6 is barrel-shaped in being inverted, the lower end of stud 11 is passed the center hole of plate-shaped springs 9 and is threaded with coil carrier 6, the middle part of stud 11 is connected by nut thread, described nut is positioned on the upper-end surface of plate-shaped springs 9, the upper-end surface of cylindrical guide 16 is packed on the lower end surface of stud 11, the bottom of cylindrical guide 16 is positioned at linear bearing 2, annular space is formed between upper magnet yoke 5 and outer yoke 4, the bottom of coil carrier 6 is wound with coil 21, coil 21 is positioned at annular space place.
During use, two limiting boards 15 are fixed on the top of electromagnetism vibration isolator by three bolts 10, damping spring 13 is arranged on the stud of electromagnetism vibration isolator by two limit spring 14, damping spring 13 together moves along with the mover of vibration isolator, electromagnetism vibration isolator be subject to comparatively strong impact force time, damping spring edge first touches the surface of contact of limiting board, along with the continuous increase of the relative displacement of vibration isolator mover, the contact face radius of damping spring and limiting board is more and more less, and rigidity is increasing; When the relative displacement of vibration isolator mover reaches design limit, limit spring sheet contacts with surface of contact, provides great rigidity, stops mover to continue relative movement;
The rigidity of damping spring 13 and limit spring 14 is determined by maximum impact force, vibration isolator rigidity and the quality by vibration isolating mechanism, and the rigidity of damping spring 13 is greater than the support stiffness of fondational structure, and the rigidity of limit spring 14 is greater than the rigidity of damping spring 13;
The impact force that the thickness of damping spring 13 may be subject to by system determines, only needs thinner thickness when impact force is less, and the now moment rigidity transition that contacts with limiting board 15 of damping spring 13 is relatively little; Need the thickness strengthening damping spring 13 when impact force is larger, guarantee that vibration isolator is not destroyed;
Limiting board 15 is the surface of revolution that circular arc is formed with the surface of contact of damping spring 13, under different displacements, damping spring 13 and the surface of contact of limiting board 15 are annulus that radius does not wait, displacement is larger, contact annular radii is less, the rigidity of damping spring 13 is larger, until when limit spring 14 contacts with limiting board 15, damping spring rigidity reaches maximum value and thoroughly limits mover by limit spring and continues motion.
Embodiment two: the cross section normal of present embodiment limiting board is circular arc surface of revolution.Other composition and annexation identical with embodiment one.Design like this, the thickness of limited ring 22 is the assembly error that the design runlength of mover+damping spring thickness+spring sheet departs from the vertical center of limited ring, to guarantee that mover can at stroke range of motion by the impact of buffer limiter.Other composition and annexation identical with embodiment one or two.
Embodiment four: the thickness range of present embodiment damping spring 13 is 0.2mm ~ 0.6mm.Design like this, can make damping spring 13 contact rear rigidity with limiting board 15 and change in suitable scope.Other composition and annexation identical with embodiment three.
Embodiment five: as shown in Figure 1, the range in stiffness of present embodiment damping spring 13 is 1 × 10
4n/m ~ 1 × 10
6n/m.Design like this, is unlikely to rigidity on the one hand too small, limit spring 14 is greatly weakened the impact of limiting board when structure is subject to impacting; When should avoid on the other hand that damping spring 13 rigidity is excessive causes structure to be subject to impacting, its amount of deformation is too small and lose cushioning effect.Other composition and annexation and embodiment one, two or four identical.
Embodiment six: as shown in Figure 1, the range in stiffness of present embodiment limit spring 14 is at least 1 × 10
6n/m.Design like this; structure can be made to be subject to greater impact power; damping spring 13 limit spring 14 when being deformed to maximum value contacts with limiting board 15, thoroughly the further relative movement of restriction vibration isolator coil and main body, and the parts such as protection vibration isolator spring, linear bearing are not damaged.Other composition and annexation identical with embodiment five.
Embodiment seven: the outer rim of damping spring 13 is uniform has been wholely set multiple semicircle buffer substrate tablet.Design like this, the stroke surplus that damping spring 13 can make full use of the permission of electromagnetism vibration isolator cushions, and be applicable to less impulsive load, the rigidity of damping spring 13 can be determined by the quantity of spring sheet thickness and semicircle buffer substrate tablet.Other composition and annexation and embodiment one, two, four or six identical.
Claims (7)
1. the buffer limiter for electromagnetism vibration isolator, it is characterized in that: described buffer limiter comprises limited ring (22), damping spring (13), two limit spring (14) and two limiting boards (15), limiting board (15) is in disc-shape, (15) are processed with central through bore to limiting board, one end face of limiting board (15) is processed with circular arc concave surface, limited ring (22) is positioned between two limiting boards (15), the circular arc concave surface of two limiting boards (15) is oppositely arranged on the top of electromagnetism vibration isolator, damping spring (13) and two limit spring (14) are positioned at the space that two limiting boards (15) are formed, damping spring (13) is arranged on the stud (11) of electromagnetism vibration isolator by two limit spring (14), two limiting boards (15) are installed on upper and two limiting boards (15) of stud (11) and do not contact with stud (11).
2. the buffer limiter for electromagnetism vibration isolator according to claim 1, is characterized in that: limiting board (15) is the surface of revolution that circular arc is formed with the surface of contact of damping spring (13).
3. the buffer limiter for electromagnetism vibration isolator according to claim 1 and 2, is characterized in that: the thickness range of limited ring (22) is 2.5mm ~ 10mm.
4. the buffer limiter for electromagnetism vibration isolator according to claim 3, is characterized in that: the thickness range of damping spring (13) is 0.2mm ~ 0.6mm.
5. the buffer limiter for electromagnetism vibration isolator according to claim 1,2 or 4, is characterized in that: the range in stiffness of damping spring (13) is 1 × 10
4n/m ~ 1 × 10
6n/m.
6. the buffer limiter for electromagnetism vibration isolator according to claim 5, is characterized in that: the rigidity of limit spring (14) is at least 1 × 10
6n/m.
7. the buffer limiter for electromagnetism vibration isolator according to claim 1,2,4 or 6, is characterized in that: the outer rim of damping spring (13) is uniform has been wholely set multiple semicircle buffer substrate tablet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360144.8A CN104179867B (en) | 2014-07-25 | 2014-07-25 | For the buffer limiter of electromagnetism vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410360144.8A CN104179867B (en) | 2014-07-25 | 2014-07-25 | For the buffer limiter of electromagnetism vibration isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104179867A CN104179867A (en) | 2014-12-03 |
| CN104179867B true CN104179867B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410360144.8A Expired - Fee Related CN104179867B (en) | 2014-07-25 | 2014-07-25 | For the buffer limiter of electromagnetism vibration isolator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737162A (en) * | 2018-12-27 | 2019-05-10 | 哈尔滨工业大学 | A kind of electric and magnetic oscillation recovers energy tuned mass damper |
| CN113889365B (en) * | 2020-07-02 | 2024-05-14 | 陕西新通智能科技有限公司 | Lost motion iron core in electromagnetic switch anti-impact and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686249A (en) * | 1979-12-18 | 1981-07-13 | Nippon Kokan Kk <Nkk> | Antivibration shoe |
| FR2557514A1 (en) * | 1984-01-02 | 1985-07-05 | Venissieux Atel | Spring for vehicle suspension |
| GB2265669A (en) * | 1992-04-03 | 1993-10-06 | Gen Electric | Reciprocating compressor dynamic balancer |
| CN1120134A (en) * | 1994-01-18 | 1996-04-10 | 韩国机械研究院 | Axial vibration isolator utilizing leaf springs |
| JP2006300263A (en) * | 2005-04-22 | 2006-11-02 | Sharp Corp | Vibration damper and stirling engine with the same |
| CN202301687U (en) * | 2011-10-10 | 2012-07-04 | 陈先伟 | Low-frequency vibration isolation platform |
-
2014
- 2014-07-25 CN CN201410360144.8A patent/CN104179867B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686249A (en) * | 1979-12-18 | 1981-07-13 | Nippon Kokan Kk <Nkk> | Antivibration shoe |
| FR2557514A1 (en) * | 1984-01-02 | 1985-07-05 | Venissieux Atel | Spring for vehicle suspension |
| GB2265669A (en) * | 1992-04-03 | 1993-10-06 | Gen Electric | Reciprocating compressor dynamic balancer |
| CN1120134A (en) * | 1994-01-18 | 1996-04-10 | 韩国机械研究院 | Axial vibration isolator utilizing leaf springs |
| JP2006300263A (en) * | 2005-04-22 | 2006-11-02 | Sharp Corp | Vibration damper and stirling engine with the same |
| CN202301687U (en) * | 2011-10-10 | 2012-07-04 | 陈先伟 | Low-frequency vibration isolation platform |
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| Publication number | Publication date |
|---|---|
| CN104179867A (en) | 2014-12-03 |
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Granted publication date: 20160406 |
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