CN206348356U - A kind of micro-acceleration vibrating device - Google Patents
A kind of micro-acceleration vibrating device Download PDFInfo
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- CN206348356U CN206348356U CN201621478118.6U CN201621478118U CN206348356U CN 206348356 U CN206348356 U CN 206348356U CN 201621478118 U CN201621478118 U CN 201621478118U CN 206348356 U CN206348356 U CN 206348356U
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Abstract
A kind of micro-acceleration vibrating device, including shell and the exciting component being installed in shell, exciting component is made up of magnet steel, yoke, moving-coil, moving axis and return spring assembly, magnet steel and yoke are fixed, moving-coil and moving axis are fixed, moving-coil is made up of moving coil framework and the coil being wound on moving coil framework, and magnet steel, yoke, moving-coil and moving axis are coaxial, and magnet steel, yoke, moving-coil and moving axis are arranged from bottom to top successively；Return spring assembly is arranged between moving axis and shell, and return spring assembly, which has to provide, makes the (the first back-moving spring of the downward pretightning force of moving axis and offer make the second back-moving spring of the upward pretightning force of moving axis；The top of shell is provided with the exposed through hole of moving axis top surface is allowed, and the exposed face of moving axis is used as work top；Shell is hung on hoisting bracket by lifting spring.The utility model, which has, can be effectively isolated extraneous vibration, and exciting component is not vibrated by external interference is influenceed, while the advantage of micro-acceleration focus can be provided.
Description
Technical field
The utility model is related to a kind of electromagnetic vibration generator system.
Background technology
Vibration measurement all generally existing in the technical field such as military, space flight and aviation and civilian industry, includes U.S. at present
The technology developed country such as state, West Europe, Russia and Japan all attaches great importance to the development and research of vibration measurement technology.It is micro- to accelerate
Vibrating device is spent mainly in micro-acceleration (10-6G) be used to detect the resolution ratio of vibration-measuring sensor in the range of, be vibration measurement to
The key link that micro-acceleration direction is developed, is also that mete-wand develops deficiency urgently to be resolved hurrily to milligram ammonia.Conventional electromagnetic
In shake table, acceleration is efficiently exported due to pursuing, so unitary current output acceleration magnitude is all larger, is inputted by changing
Electric current obtains micro-acceleration, often requires that the electric current of input is very small, greatly affected the signal to noise ratio of output waveform.It is Chinese special
Profit 200520036395.7 discloses a kind of shake table, including vibrating motor, vibration table and spring, its vibrating motor and bullet
Spring support is installed between stand and vibration table, and multiple screw positioning holes are offered on the table top of vibration.This shake table lack
Point is：When exporting micro-acceleration vibration, due to easily reason, output vibration acceleration and the electricity such as being disturbed by external environment condition
Machine rotating speed is relevant, and micro-acceleration is hardly resulted in during high frequency.
The content of the invention
In order to overcome the shortcomings of that prior art can not provide the vibration of high s/n ratio micro-acceleration, the utility model proposes one
The vibration generating arrangement of micro-acceleration vibration can be exported by planting.
A kind of micro-acceleration vibrating device, including shell and the exciting component that is installed in shell, exciting component by magnet steel,
Yoke, moving-coil, moving axis and return spring assembly composition, magnet steel and yoke are fixed, and moving-coil and moving axis are fixed, and moving-coil is by moving coil framework
With the coil composition being wound on moving coil framework, it is characterised in that：Magnet steel, yoke, moving-coil and moving axis are coaxial, magnet steel, yoke, dynamic
Circle and moving axis are arranged from bottom to top successively；Return spring assembly is arranged between moving axis and shell, and return spring assembly, which has, to be carried
Make the second back-moving spring of the upward pretightning force of moving axis for the (the first back-moving spring and offer for making the downward pretightning force of moving axis；Shell
Top provided with the exposed through hole of moving axis top surface is allowed, the exposed face of moving axis is used as work top；Shell is hanged by lifting spring
It is hung on hoisting bracket.
Further, hoisting bracket includes longitudinal bracing and horizontal support, and it is multiple, lifting spring edge to hang spring-loaded quantity
The top surface of shell is uniformly distributed.
Further, shell is made up of cylinder, bottom and moving axis support；Cylinder and bottom are fixed with moving axis support respectively, the
Two back-moving springs are located between moving axis and moving axis support, and cylinder has top plate, it is allowed to which the exposed through hole of moving axis is opened on top plate.
Further limit moving axis support shape and with cylinder, bottom, moving axis attachment structure：Moving axis support has and cylinder
The body of body adaptation, body is hollow and is set in cylinder, and side wall and the cylinder of body are fixed, and bottom surface and the bottom of body are consolidated
It is fixed, second back-moving spring is held at the top of body.
Further limit the relation of moving axis support and exciting component：The bulge loop extended internally in body provided with a circle, bulge loop
There is air gap between yoke, moving-coil is located in air gap, bulge loop, yoke, magnet steel and bottom formation closed magnetic circuit, closed magnetic circuit is in gas
Uniform magnetic field is produced in gap；The enough moving-coil free vibration of distance of moving-coil and bulge loop.
The structure of moving axis is further limited, with the relation of clear and definite moving axis and return spring assembly：The top of moving axis is provided with upper
The shaft shoulder, (the first back-moving spring is arranged between the shaft shoulder and cylinder；The bottom of moving axis is provided with the lower shaft shoulder, and second back-moving spring is set
Between moving axis support and the lower shaft shoulder；(the first back-moving spring one end pushes against the upper shaft shoulder of moving axis, and the other end pushes against the top plate of cylinder；
Second back-moving spring one end pushes against the lower shaft shoulder, and the other end pushes against the body of moving axis support.
(the first back-moving spring and second back-moving spring are disk spring, and the small end of (the first back-moving spring pushes against the upper shaft shoulder,
The small end of second back-moving spring pushes against the lower shaft shoulder.
Further, fairlead is equipped with cylinder and moving axis support, fairlead and the moving axis support lead hole of cylinder are aligned.
Technical concept of the present utility model is：Using the closed magnetic circuit of bulge loop, yoke, magnet steel and bottom formation in air gap
Magnetic induction intensity is produced, is then acted on coil, now a constant sinusoidal electric current is provided to coil again, then hot-wire coil
Just produce Ampere force and act on moving axis, produce stable vibration acceleration output.It is calibrated sensor and is fixed with moving axis and is connected
Connect, receive the vibration that moving axis is exported.While the setting by lifting spring and butterfly spring so that device can be effectively isolated
External interference simultaneously realizes micro-acceleration vibration output.
The beneficial effects of the utility model are：Exciting component and exciting package shell are hung on into lifting by lifting spring
On support, extraneous vibration is effectively isolated, exciting component is not vibrated by external interference is influenceed, while designing big from rigidity
Butterfly spring pretension is loaded installation moving axis so that it can provide micro-acceleration focus, simple and practical, easy to operate.
Brief description of the drawings
Fig. 1 is micro-acceleration shake table structural representation.
Fig. 2 is the schematic diagram of cylinder.
Fig. 3 is the schematic diagram of moving axis support.
Fig. 4 is magnetic circuit figure.
Fig. 5 is micro-acceleration shake table Equivalent Mechanical Model.
Embodiment
The utility model is further illustrated referring to the drawings 1-5：
As shown in figure 1, a kind of micro-acceleration vibration generating arrangement, including shell and the exciting component being installed in shell,
Exciting component is made up of magnet steel 12, yoke 11, moving-coil, moving axis 4 and return spring assembly, and magnet steel 12 is fixed with yoke 11, moving-coil
Including moving coil framework 8 and the coil 10 being wound on moving coil framework 8, moving coil framework 8 is adhesively fixed with moving axis 4 or connected by riveting
Connect fixation；Coil helix is wound on moving coil framework, when being passed through alternating current into coil, under the influence of a magnetic field, moving-coil
Component produces the Ampere force along moving coil framework axial direction.
Magnet steel 12, yoke 11, moving-coil and moving axis 4 are coaxial, magnet steel 12, yoke 11, moving-coil and moving axis 4 cloth from bottom to top successively
Put；Return spring assembly is arranged between moving axis 4 and shell, and return spring assembly, which has to provide, makes the downward pretightning force of moving axis
(the first back-moving spring 6 and offer make the second back-moving spring 7 of the upward pretightning force of moving axis.The top of shell is provided with permission moving axis 4
The exposed through hole of top surface, the exposed face of moving axis 4 is used as work top.
Shell is hung on hoisting bracket by lifting spring 2.Hoisting bracket includes longitudinal bracing 3 and horizontal support 1, hangs
The quantity of shock mount 2 is multiple, and lifting spring 2 is uniformly distributed along the top surface of shell.
Shell includes cylinder 5, bottom 13 and moving axis support 9, and bottom 13 is fixedly connected with magnet steel 12.
As shown in Fig. 2 cylinder 5 has top plate, it is allowed to which the exposed through hole 52 of moving axis 4 is opened on top plate.Cylinder 5 is provided with
Fairlead 51.
As shown in figures 1 and 3, moving axis support 9 has the body 91 being adapted to cylinder, and body 91 is hollow and is set in cylinder
In 5, side wall and the cylinder of body 91 are fixed, and bottom surface and the bottom of body 91 are fixed, and the second reset bullet is held at the top of body 91
Spring 7.Moving axis support 9 is provided with fairlead 92.The bottom surface of body 91 is evenly distributed with multiple screws, and bottom 13 has what is aligned with screw
Screwing through hole, screw is installed on corresponding screw by screwing through hole.
As shown in figure 3, moving coil support 9 is provided with fairlead 92.Moving axis support 9 is provided with the circle bulge loop 93 extended internally.
As shown in figure 1, the fairlead 51 of the fairlead 92 of moving coil support 9 and cylinder 5 is aligned.
As shown in figure 4, there is air gap between bulge loop 93 and yoke 11, moving-coil is located in air gap, bulge loop, yoke 11, magnet steel
12 and the formation closed magnetic circuit of bottom 13, and produce in air gap magnetic induction intensity.The enough moving-coils of distance of moving-coil and bulge loop 93 are certainly
By vibrating.
As shown in figure 1, the top of moving axis 4 is provided with the upper shaft shoulder, the bottom of moving axis 4 is provided with the lower shaft shoulder；(the first back-moving spring 6 one
End pushes against the upper shaft shoulder of moving axis 4, and the other end pushes against the top plate of cylinder 5, and moving axis 4 is pressed downward by the pretightning force of (the first back-moving spring 6；
The one end of second back-moving spring 7 pushes against the lower shaft shoulder, and the other end pushes against the body 91 of moving axis support 9, the pretightning force of second back-moving spring 7
Moving axis 4 is pushed up upwards, so as to play a part of support limit to moving axis 4.When being passed through alternating current in coil 10, moving-coil is in peace
Up-down vibration vertically in the presence of power is trained, now, return spring assembly plays a part of providing restoring force for moving axis 4
(the first back-moving spring 6 and second back-moving spring 7 are disk spring, and the small end of (the first back-moving spring 6 pushes against upper axle
Shoulder, the small end of second back-moving spring 7 pushes against the lower shaft shoulder.(the first back-moving spring 6 and second back-moving spring 7 realize the pretension dress of moving axis
Card is installed, simultaneously because rigidity is larger, the generation for being conducive to micro-acceleration to vibrate.Lift spring 2 and use the less cylindricality of rigidity
Spring, plays the effect of vibration isolation.
As shown in figure 1, the longitudinal bracing 3 of hoisting bracket is vertical with basis 14, horizontal support 1 is parallel with basis 14, longitudinal direction
Support 3 is fixedly connected with horizontal support 1.Exciting component is hung on horizontal support 1 by many lifting springs 2, lifts spring 2
It is uniformly distributed in the top of cylinder 5；The top of cylinder 5 offers the through hole 52 for allowing moving axis 4 to flex outward, and the top surface of moving axis 4 is as putting
Put the work top for being calibrated sensors A.
Horizontal support 1 is in annular, and anchor ring of the longitudinal bracing 3 along horizontal support 1 is uniformly distributed.Certainly, horizontal support 1
Can also be in other shapes, such as square.The shape of horizontal support 1 is not limited to the citing of the present embodiment.
The basis 14 of hoisting bracket is ground or the pedestal fixed with ground.
Technical concept of the present utility model：Utilize the closed magnetic of moving axis support 9, yoke 11, magnet steel 12 and bottom 13 formation
Road produces magnetic induction intensity in air gap, then acts on coil 10, now provides a constant sinusoidal electricity to coil 10 again
Stream, then hot-wire coil just produces Ampere force and acted on moving axis 4, produces stable vibration acceleration output.It is calibrated biography
Sensor A is fixedly connected with moving axis 4, receives the vibration that moving axis 4 is exported.Simultaneously by lifting the setting of spring 2 and butterfly spring,
Allow device to be effectively isolated external interference and realize micro-acceleration vibration output.
Whole vibration generating arrangement is mainly Y by the introduced amplitude of ground 140, angular frequency be ω0Interference Y (t)=
Y0sinω0T and the Ampere force effect itself produced.After to the galvanization of coil 10, due to the effect of Ampere force, moving axis 4
And exciting package shell is acted on by the opposite power F sin ω t and-F sin ω t of equal in magnitude, action direction respectively.Ignore and be
System damping, it is assumed that the spring rate sum of lifting spring 2 is k '；The rigidity sum of first disk spring 6 and the second butterfly spring 7
For k；The quality of moving axis 4 is that m, displacement are x1；Moving axis 4 and two butterfly springs are by M of the gross mass of outer portion, displacement is x2。
, can row kinetics equation when considering vibration generating arrangement only by the effect of ground 14：
The steady-state response amplitude of moving axis 4 for acting on introducing by ground 14, which can be obtained, is：
Further arrange：
Orderrs=ω0/ωs、rm=ω0/ωm、rM=
ω0/ωM, then have：
Due to rigidity of the rigidity much larger than lifting spring 2 of the selected butterfly spring 7 of first butterfly spring 6 and second, i.e. k
>>K ', and meet rm<<1, rmrM<<1, then above formula can be reduced to：
Corresponding acceleration amplitude is：
Further rationally design ωsSo thatThen haveSo as to obtain preferably
Vibration isolating effect, eliminate the interference effect of ground 14.
Can row kinetics equation when considering that moving axis 4 is acted on by M.E：
Can the steady-state response amplitude of moving axis 4 that be introduced by M.E is：
Due to rigidity of the rigidity much larger than lifting spring 2 of butterfly spring, i.e. k>>K ' in k ', therefore above formula can be neglected
Disregard, then above formula can be reduced to：
Orderr1=ω/ω1, μ=m/M, then above formula can be further simplified as：
Corresponding acceleration amplitude is：
During design, ω is taken1So thatAnd then corresponding acceleration amplitude can be reduced to：
It can be seen that, as long as from butterfly spring sufficiently large rigidity k, the present apparatus just can obtain micro-acceleration output.
Thus, the utility model has isolated the interference introduced by ground 14 well by the less lifting spring 2 of rigidity,
The acceleration magnitude exported under given input electromagnetic force is efficiently reduced by the butterfly spring moving axis 4 that is loaded simultaneously.
Meanwhile, by designing vibration generating arrangement magnetic air gap magnetic field B and magnetic field coil conductor length L, you can in input current I
When, according to Ampere force calculation formula F=BIL, exciting force F is produced, and then acquire micro- g magnitudes (10-6G) vibration output, this
Utility model can realize the output of micro-acceleration vibration.
The beneficial effects of the utility model are:Exciting component and exciting package shell are hung on into lifting by lifting spring
On support, isolate extraneous vibration, exciting component is not vibrated by external interference is influenceed, while designing from the big butterfly of rigidity
Spring pre-tightening is loaded installation moving axis so that it can provide the micro-acceleration focus of high s/n ratio, simple and practical, operation side
Just.
Content described in this specification embodiment is only enumerating to the way of realization of utility model design, and this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model also and
In those skilled in the art according to the utility model conceive it is conceivable that equivalent technologies mean.
Claims (8)
1. a kind of micro-acceleration vibrating device, including shell and the exciting component being installed in shell, exciting component is by magnet steel, magnetic
Yoke, moving-coil, moving axis and return spring assembly composition, magnet steel and yoke fixed, and moving-coil and moving axis are fixed, moving-coil by moving coil framework and
It is wound in the coil composition on moving coil framework, it is characterised in that：Magnet steel, yoke, moving-coil and moving axis are coaxial, magnet steel, yoke, moving-coil
Arranged from bottom to top successively with moving axis；Return spring assembly is arranged between moving axis and shell, and return spring assembly, which has, to be provided
The (the first back-moving spring and offer for making the downward pretightning force of moving axis make the second back-moving spring of the upward pretightning force of moving axis；Shell
Top is provided with the exposed through hole of moving axis top surface is allowed, and the exposed face of moving axis is used as work top；Shell is hung by lifting spring
In on hoisting bracket.
2. micro-acceleration vibrating device as claimed in claim 1, it is characterised in that：Hoisting bracket includes longitudinal bracing and level
Support, it is multiple to hang spring-loaded quantity, and lifting spring is uniformly distributed along the top surface of shell.
3. micro-acceleration vibrating device as claimed in claim 1 or 2, it is characterised in that：Shell is by cylinder, bottom and moving axis branch
Frame is constituted；Cylinder and bottom are fixed with moving axis support respectively, and second back-moving spring is located between moving axis and moving axis support, cylinder tool
There is top plate, it is allowed to which the exposed through hole of moving axis is opened on top plate.
4. micro-acceleration vibrating device as claimed in claim 3, it is characterised in that：Moving axis support has the sheet being adapted to cylinder
Body, body is hollow and is set in cylinder, and side wall and the cylinder of body are fixed, and bottom surface and the bottom of body are fixed, the top of body
Hold second back-moving spring in portion.
5. micro-acceleration vibrating device as claimed in claim 4, it is characterised in that：In body provided with a circle extend internally it is convex
Ring, there is air gap between bulge loop and yoke, moving-coil is located in air gap, bulge loop, yoke, magnet steel and bottom formation closed magnetic circuit, closure
Magnetic circuit produces uniform magnetic field in air gap；The enough moving-coil free vibration of distance of moving-coil and bulge loop.
6. micro-acceleration vibrating device as claimed in claim 5, it is characterised in that：The top of moving axis is provided with the upper shaft shoulder, first
Back-moving spring is arranged between the shaft shoulder and cylinder；The bottom of moving axis is provided with the lower shaft shoulder, and second back-moving spring is arranged at moving axis branch
Between frame and the lower shaft shoulder；(the first back-moving spring one end pushes against the upper shaft shoulder of moving axis, and the other end pushes against the top plate of cylinder；Second resets
Spring one end pushes against the lower shaft shoulder, and the other end pushes against the body of moving axis support.
7. micro-acceleration vibrating device as claimed in claim 6, it is characterised in that：(the first back-moving spring and second back-moving spring
It is disk spring, the small end of (the first back-moving spring pushes against the upper shaft shoulder, and the small end of second back-moving spring pushes against the lower shaft shoulder.
8. micro-acceleration vibrating device as claimed in claim 6, it is characterised in that：It is all provided with cylinder and moving axis support leaded
Hole, fairlead and the moving axis support lead hole of cylinder are aligned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478118.6U CN206348356U (en) | 2016-12-30 | 2016-12-30 | A kind of micro-acceleration vibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621478118.6U CN206348356U (en) | 2016-12-30 | 2016-12-30 | A kind of micro-acceleration vibrating device |
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| Publication Number | Publication Date |
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| CN206348356U true CN206348356U (en) | 2017-07-21 |
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ID=59323681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621478118.6U Withdrawn - After Issue CN206348356U (en) | 2016-12-30 | 2016-12-30 | A kind of micro-acceleration vibrating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597024A (en) * | 2016-12-30 | 2017-04-26 | 浙江大学 | Micro-acceleration vibrating device |
-
2016
- 2016-12-30 CN CN201621478118.6U patent/CN206348356U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597024A (en) * | 2016-12-30 | 2017-04-26 | 浙江大学 | Micro-acceleration vibrating device |
| CN106597024B (en) * | 2016-12-30 | 2020-01-21 | 浙江大学 | Micro-acceleration vibration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20200121 |
|
| AV01 | Patent right actively abandoned |