CN208688541U - A kind of sensor vibration fatigue experimental device - Google Patents
A kind of sensor vibration fatigue experimental device Download PDFInfo
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- CN208688541U CN208688541U CN201821560591.8U CN201821560591U CN208688541U CN 208688541 U CN208688541 U CN 208688541U CN 201821560591 U CN201821560591 U CN 201821560591U CN 208688541 U CN208688541 U CN 208688541U
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Abstract
The utility model discloses a kind of sensor vibration fatigue experimental devices, including the electromagnetic vibration generator system, jigging platform moving coil and fixture set gradually from bottom to up；The fixture is fixed at the center of the jigging platform moving coil, and the fixture runs through in the horizontal direction offers mounting hole, and the mounting hole is for installing tested sensor；It further include monitor, the monitor is connect with tested sensor.Its sensor vibration fatigue test that can do high frequency high acceleration, test accuracy is high, convenient and practical.
Description
Technical field
The utility model relates to sensor vibration testing fatigue technical fields, and in particular to a kind of sensor vibration fatigue examination
Experiment device.
Background technique
The various sensors of engine operating state are monitored on aircraft engine shell, running environment is very harsh,
In addition to the presence of the environmental stress such as high/low temperature and air pressure, various complex vibration stress are also a weight for influencing its performance reliability
Want factor.Actual environment sampling display, the vibration stress type of aircraft engine shell are random superposition sinusoidal vibration, frequency band
It is divided into low frequency part 20Hz~2000Hz, the accelerated speed effective value of high frequency section 7400Hz~12950Hz, random vibration part are super
30g is crossed, sinusoidal vibration acceleration peak value is up to 56g, and sum total is up to 37g at acceleration magnitude virtual value.
Currently, being usually provided with six table top screws, the vibration on the table top of its jigging platform moving coil of standard vibration experimental rig
The workbench of dynamic platform moving-coil is connect by six table top screws with expanding operating platform, and sensing to be measured is housed on expanding operating platform
Device.5~10000Hz of frequency range of the standard vibration experimental rig generally used in the market, peak acceleration 25g, nothing
By being that frequency range or acceleration magnitude all limit it and can also can in the vibration stress environment of the laboratory simulation complexity
The vibrating fatigue reliability for verifying such sensor structure performance is not suitable for doing high frequency high acceleration vibration fatigue test.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of sensor vibration fatigue experimental devices, can do height
The sensor vibration fatigue test of frequency high acceleration, test accuracy is high, convenient and practical.
In order to solve the above-mentioned technical problem, the utility model provides a kind of sensor vibration fatigue experimental device, including
Electromagnetic vibration generator system, jigging platform moving coil and the fixture set gradually from bottom to up；The jigging platform moving coil vertical vibration, the fixture
It is fixed at the center of the jigging platform moving coil, the fixture runs through in the horizontal direction offers mounting hole, described
Mounting hole is for installing tested sensor；It further include monitor, the monitor is connect with tested sensor.
Preferably, being provided with center of gravity on the fixture adjusts protrusion, the center of gravity adjusts protrusion and is located at the installation
The side in hole, the fixture are mounted with that the center of gravity after tested sensor is located on the central axis of jigging platform moving coil.
Preferably, the bottom of the fixture is provided with bolt, it is provided at the center of the jigging platform moving coil and institute
The threaded hole that bolt matches is stated, the fixture is connect by bolt with the jigging platform moving coil.
Preferably, the lower surface of the fixture is bonded setting with the jigging platform moving coil.
Preferably, the bolt is M8 bolt, the threaded hole is M8 threaded hole.
Preferably, being provided with vibration control sensor on the upside of the fixture.
Preferably, being provided with gasket between the vibration control sensor and fixture, the gasket is insulating materials.
Preferably, the upper surface of the gasket is fixedly connected with glue with vibration control sensor, the gasket
Lower surface is fixedly connected with glue with fixture.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model is got the bid with respect to the background art by being fixedly installed fixture at the center of jigging platform moving coil
Quasi- vibration testing device reduces bascule quality, improves acceleration and optimizes the frequency response characteristic of high band, thus
The present apparatus is allowed to do the sensor vibration fatigue test of high frequency high acceleration.
2, it is provided with center of gravity on the utility model fixture and adjusts protrusion, which adjusts protrusion and the center of gravity of fixture is located at
The side of jigging platform moving coil forms tilting moment, that is, carries out eccentric design, after fixture is mounted with tested sensor, whole weight
The heart is located on the central axis of jigging platform moving coil, to avoid unnecessary high frequency oscillation crosswise and non-linear distortion, improves test
Precision.
3, the utility model structure is simple, convenient and practical.
Detailed description of the invention
For the clearer technical solution illustrated in the utility model embodiment technology, embodiment technology will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, additionally it is possible to according to
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model fixture；
Fig. 3 is the right view of the utility model fixture.
Wherein, 10, electromagnetic vibration generator system；11, jigging platform moving coil；20, fixture；21, bolt；22, center of gravity adjusts protrusion；23,
Mounting hole；30, vibration control sensor；40, it is tested sensor.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work
Under every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
Shown in referring to Fig.1~Fig. 3, the utility model discloses a kind of sensor vibration fatigue experimental devices, including under
The supreme electromagnetic vibration generator system 10 set gradually, jigging platform moving coil 11 and fixture 20, the jigging platform moving coil vertical vibration.
Fixture 20 is fixed at the center of jigging platform moving coil 11.Connection between fixture 20 and jigging platform moving coil 11 can
Bolt 21 is selected to connect, i.e. the bottom of fixture 20 is provided with bolt 21, is provided at the center of jigging platform moving coil 11 and bolt 21
The threaded hole matched, fixture 20 are connect by bolt 21 with jigging platform moving coil 11.Bolt 21 is M8 bolt 21, threaded hole M8
Threaded hole.Mounting base, can be fixed on jigging platform moving coil 11 by bolt 21 and threaded hole close fit.Certainly, fixture 20 with
Welding or the rigid connection of other modes can also be used in the connection of jigging platform moving coil 11, and the purpose is to fixture 20 is fixed on vibration
At the center of dynamic platform moving-coil 11.Due to the jigging platform moving coil vertical vibration, and the gravity of fixture be also it is vertical, cross can be eliminated
To vibration error.
And fixture 20 is in the horizontal direction through offering mounting hole 23.And mounting hole 23 is for installing tested sensor
40。
Under the premise of not changing moving coil framework material and primary structure, i.e., rigidity remains unchanged, further mitigation activity
The quality of structure can advanced optimize the Frequency Response of high band.In addition, according to Newton's second law:, bascule quality
When reduction, in the case that 10 thrust of electromagnetic vibration generator system is certain, the magnitude of the peak acceleration of vibrational system can be improved.Specific behaviour
Make mode are as follows: relative to traditional standard vibration experimental rig, by six table top spiral shells on the table top of original jigging platform moving coil 11
Nail all removes, and does not use expanding operating platform, reduces movable mass, and fixation is set directly at the center of jigging platform moving coil 11
It is equipped with fixture 20.Threaded hole can be arranged in it at the center of the table top of jigging platform moving coil 11, and fills on jigging platform moving coil 11
There is the fixture 20 closed with corresponding threaded holes.The design is simple, at low cost, can quickly and effectively evade the resonance point of high band,
Improve the Frequency Response of experimental condition medium-high frequency section, while under 10 thrust unanimous circumstances of electromagnetic vibration generator system, further decreasing
The maximum vibration acceleration of tested sensor 40 can be improved in the quality of movable part, realizes the excitation of high frequency high acceleration.
It is provided with center of gravity on fixture 20 and adjusts protrusion 22, the center of gravity of fixture 20 is located at the central axis of jigging platform moving coil 11
Side, and form tilting moment.Fixture 20 is mounted with that the center of gravity after tested sensor 40 is located at the central axis of jigging platform moving coil 11
On.When the eccentric design of this fixture avoids vertical vibration test, since fixture 20 is loaded onto eccentric after tested sensor 40, produce
Raw tilting moment, causes unnecessary high frequency oscillation crosswise and non-linear distortion.After fixture 20 loads onto tested sensor 40,
Whole center of gravity is on the central axis of jigging platform moving coil 11, it is ensured that the accuracy of test.And the utility model fixture 20 and vibration
Using the connection that is screwed of bolt 21, i.e. fixture 20 loads onto tested sensor 40, whole weight for connection between dynamic platform moving-coil 11
The heart is located on the central axis of bolt 21.
The lower surface of fixture 20 is bonded setting with jigging platform moving coil 11, is further ensured that vertical overall stiffness, reduces laterally
Vibrate the influence to test high band.
The upside of fixture 20 is provided with vibration control sensor 30, and vibration control sensor 30 can detect the vibration of fixture 20
The vibrational state of fixture 20 is fed back to vibration controller by state, controls electromagnetic vibration generator system output regulation magnitude by controller
Vibrational excitation.
Electromagnetic vibration generator system 10 also facilitates the vibration of monitoring fixture 20 to guarantee that the vibration frequency of fixture 20 is relatively stable
State.
Gasket is provided between vibration control sensor 30 and fixture 20, gasket is insulating materials.Usual fixture 20 and vibration
Controller is metal material, and working condition can generate electrostatic between the two, influences experimental precision, therefore the gasket to insulate can disappear
Interference is destaticed, detection accuracy is improved.
And the upper surface glue of gasket is fixedly connected with vibration control sensor 30, the lower surface glue and folder of gasket
Tool 20 is fixedly connected.Glue is fixed conveniently installation and removal, when the test is finished, it is thus only necessary to by vibration control from fixture 20
Sensor 30 is broken down, and the cured glue of vibration control sensor 30 and adhesion on fixture 20, is wiped with organic solutions such as acetone
It washes.Installation speed can be improved in glue fixation, also easy to disassemble, to improve removal efficiency.
The utility model further includes vibration controller and monitor.Monitor is connect with tested sensor, can real-time monitoring
The performance indicator of tested sensor.Vibration controller is connect with electromagnetic vibration generator system and vibration control sensor 30, vibration controller
The vibrational feedback signal of vibration control sensor can be acquired in real time, and can drive the vibration of electromagnetic vibration generator system output regulation magnitude
Excitation.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with novel point.
Claims (8)
1. a kind of sensor vibration fatigue experimental device, which is characterized in that including set gradually from bottom to up electromagnetic vibration generator system,
Jigging platform moving coil and fixture；The jigging platform moving coil vertical vibration, the fixture are fixed in the jigging platform moving coil
At heart point, the fixture runs through in the horizontal direction offers mounting hole, and the mounting hole is for installing tested sensor；Also wrap
Monitor is included, the monitor is connect with tested sensor.
2. sensor vibration fatigue experimental device as described in claim 1, which is characterized in that be provided with center of gravity on the fixture
Protrusion is adjusted, the center of gravity adjusts the side that protrusion is located at the mounting hole, and the fixture is mounted with the weight after tested sensor
The heart is located on the central axis of jigging platform moving coil.
3. sensor vibration fatigue experimental device as described in claim 1, which is characterized in that the bottom of the fixture is provided with
Bolt, is provided with the threaded hole matched with the bolt at the center of the jigging platform moving coil, the fixture by bolt with
The jigging platform moving coil connection.
4. sensor vibration fatigue experimental device as claimed in claim 3, which is characterized in that the lower surface of the fixture and institute
State jigging platform moving coil fitting setting.
5. sensor vibration fatigue experimental device as claimed in claim 3, which is characterized in that the bolt is M8 bolt, institute
Stating threaded hole is M8 threaded hole.
6. sensor vibration fatigue experimental device as described in claim 1, which is characterized in that be provided on the upside of the fixture
Vibration control sensor.
7. sensor vibration fatigue experimental device as claimed in claim 6, which is characterized in that the vibration control sensor with
Gasket is provided between fixture, the gasket is insulating materials.
8. sensor vibration fatigue experimental device as claimed in claim 7, which is characterized in that the upper surface glue of the gasket
Water is fixedly connected with vibration control sensor, and the lower surface of the gasket is fixedly connected with glue with fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560591.8U CN208688541U (en) | 2018-09-25 | 2018-09-25 | A kind of sensor vibration fatigue experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560591.8U CN208688541U (en) | 2018-09-25 | 2018-09-25 | A kind of sensor vibration fatigue experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208688541U true CN208688541U (en) | 2019-04-02 |
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ID=65889306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821560591.8U Active CN208688541U (en) | 2018-09-25 | 2018-09-25 | A kind of sensor vibration fatigue experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208688541U (en) |
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2018
- 2018-09-25 CN CN201821560591.8U patent/CN208688541U/en active Active
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