CN110208577A - A kind of structure excited by impact and calibrating installation of shock accelerometer calibrating installation - Google Patents
A kind of structure excited by impact and calibrating installation of shock accelerometer calibrating installation Download PDFInfo
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- CN110208577A CN110208577A CN201910627916.2A CN201910627916A CN110208577A CN 110208577 A CN110208577 A CN 110208577A CN 201910627916 A CN201910627916 A CN 201910627916A CN 110208577 A CN110208577 A CN 110208577A
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- calibrating installation
- limit mechanism
- shock accelerometer
- shock
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- 230000035939 shock Effects 0.000 title claims abstract description 82
- 238000009434 installation Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 98
- 238000009527 percussion Methods 0.000 claims abstract description 38
- 230000009471 action Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims description 10
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- 238000004080 punching Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 5
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- 230000001133 acceleration Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000005057 refrigeration Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
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- 229910052757 nitrogen Inorganic materials 0.000 description 5
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- 230000006835 compression Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The structure excited by impact and calibrating installation of a kind of shock accelerometer calibrating installation are provided in the embodiment of the present invention, comprising: be set to the position-limit mechanism inside chamber, the hammering block being at least partially disposed inside position-limit mechanism and the percussion mechanism below position-limit mechanism；Wherein, position-limit mechanism and percussion mechanism are separately positioned, and hammering block moves in position-limit mechanism under the impact force action of percussion mechanism.Using the structure excited by impact of the embodiment of the present invention, since position-limit mechanism is separately positioned with percussion mechanism, it can be achieved for position-limit mechanism to be placed in inside chamber, percussion mechanism is placed in outside chamber, make it possible the calibration for carrying out shock accelerometer under high/low temperature, realizes the high/low temperature sensitivity absolute calibration of shock accelerometer.
Description
Technical field
The present invention relates to impact measurement technologies, and in particular, to a kind of shock accelerometer calibrating installation it is excited by impact
Structure and calibrating installation.
Background technique
Shock accelerometer is widely used in links during the scientific research, production and test of defence and military, various
The function of monitoring and test is responsible under environmental condition.The calibration of shock accelerometer at present is all to carry out at normal temperature, school
Quasi- mode is all the shock accelerometer that will be calibrated and reference shock accelerometer by being mounted on shock calibration back-to-back
On platform, the hammering block and position-limit mechanism of the impact in system excited by impact are generally connected with shock calibration platform, as shown in Figure 1, impact
Excitation system is fixed on column, and system excited by impact includes: for carrying under the constraint pad 6 of shock accelerometer 1, constraint pad
Side is that additional mass 7, constraint pad 6 and additional mass 7 constitute position-limit mechanism, shock waveform generator 8 (or being hammering block) installation
In position-limit mechanism, position-limit mechanism is fixed on column.System excited by impact further include: the pipeline being set to below position-limit mechanism
2, pressure regulator 3 and valve 4, the piston 5 in pipeline 2 being set on pipeline 2, and the compression being connected with pipeline 2 are empty
Gas source 9.But in the impact acceleration meter calibrating under high/low temperature, the shock accelerometer 1 being calibrated needs to be placed on temperature
Within chamber, due to the limitation of material and structure type, impact hammering block and position-limit mechanism in the prior art can not be applied to
High/low-temperature impact calibration.
Summary of the invention
The structure excited by impact and calibrating installation of a kind of shock accelerometer calibrating installation are provided in the embodiment of the present invention,
Solve the problems, such as that impact hammering block and position-limit mechanism in the prior art can not be applied to high/low-temperature impact and calibrate.
First aspect according to an embodiment of the present invention provides a kind of the excited by impact of shock accelerometer calibrating installation
Structure, comprising: be set to the position-limit mechanism inside chamber, the hammering block being at least partially disposed inside position-limit mechanism and be located at
Percussion mechanism below position-limit mechanism；Wherein, position-limit mechanism and percussion mechanism are separately positioned, impact force of the hammering block in percussion mechanism
Under effect, moved in position-limit mechanism.
Optionally, position-limit mechanism includes:
For carrying the constraint pad of shock accelerometer；
It is set to the additional mass of constraint pad lower section, additional mass is pressed in chamber under the effect of gravity.
Optionally, it is provided with first through hole on constraint pad, the second through-hole, first through hole and second is provided on additional mass
Through-hole is connected to form impact channel, and hammering block moves in impact channel under the impact force action of percussion mechanism.
Optionally, it is polygon, first through hole and the second through-hole that hammering block, which is located at the cross sectional shape of the part in position-limit mechanism,
Cross sectional shape be polygon compatible with hammering block.
Optionally, shock accelerometer is placed in the first through hole of constraint pad.
Optionally, percussion mechanism includes:
The gas big gun impactor being set to below position-limit mechanism；
The compressed air source being connected to gas big gun impactor；And
The impact controller being connect with compressed air source.
Optionally, gas big gun impactor includes:
The pipeline being connected to compressed air source；
The pressure regulator and valve being set on pipeline；
It is set to the piston of channel interior, piston can be along the extending direction of pipeline under the action of the air pressure of compressed air source
Movement.
Optionally, the structure excited by impact of the shock accelerometer calibrating installation further include: column, gas big gun impactor are fixed
In on column.
Optionally, column includes: the first fixed part and the second fixed part, and the both ends of gas big gun impactor pass through the first fixed part
It is fixed on column with the second fixed part.
The second aspect according to an embodiment of the present invention provides a kind of shock accelerometer calibrating installation, including is used for
Calibrate the chamber and above-mentioned structure excited by impact of shock accelerometer.
Using the structure excited by impact and calibrating installation of the shock accelerometer calibrating installation provided in the embodiment of the present invention,
It include: to be set to position-limit mechanism inside chamber, the hammering block that is at least partially disposed inside position-limit mechanism and be located at position restrainer
Percussion mechanism below structure；Wherein, position-limit mechanism and percussion mechanism are separately positioned, impact force action of the hammering block in percussion mechanism
Under, it is moved in position-limit mechanism.It is separately positioned, it can be achieved that position-limit mechanism is placed in percussion mechanism by position-limit mechanism in this way
Inside chamber, percussion mechanism is placed in outside chamber so that under high/low temperature carry out shock accelerometer calibration become can
Can, realize the high/low temperature sensitivity absolute calibration of shock accelerometer.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagrams of the system excited by impact of shock accelerometer calibrating installation in the prior art；
Fig. 2 indicates the structural schematic diagram of structure excited by impact in the embodiment of the present invention；
The structural schematic diagram of Fig. 3 expression position-limit mechanism；
The structural schematic diagram of Fig. 4 expression hammering block.
1, shock accelerometer, 2, pipeline, 3, pressure regulator, 4, valve, 5, piston, 6, constraint pad, 7, additional mass, 8, punching
Hit waveform generator, 9, compressed air source；
11, chamber, 12, hammering block, 13, constraint pad, 14, additional mass, 15, compressed air source, 16, pipeline, 17, pressure regulation
Device and valve, 18, piston, 19, column, 20, gas big gun impactor.
Specific embodiment
In the implementation of the present invention, it has been found that at present shock accelerometer calibration be all at normal temperature into
Row, the mode of calibration are all the shock accelerometer that will be calibrated and reference shock accelerometer by being mounted on punching back-to-back
It hits on calibration console, the hammering block and position-limit mechanism of the impact in system excited by impact are generally connected with shock calibration platform, in high/low temperature
Under impact acceleration meter calibrating in, the shock accelerometer being calibrated needs to be placed within temperature test chamber, due to material
With the limitation of structure type, impact hammering block and position-limit mechanism in the prior art can not be applied to high/low-temperature impact and calibrate.
In view of the above-mentioned problems, providing a kind of knot excited by impact of shock accelerometer calibrating installation in the embodiment of the present invention
Structure and calibrating installation, comprising: be set to the position-limit mechanism inside chamber, the hammering block being at least partially disposed inside position-limit mechanism,
And the percussion mechanism below position-limit mechanism；Wherein, position-limit mechanism is separately positioned with percussion mechanism, and hammering block is in percussion mechanism
Impact force action under, moved in position-limit mechanism.It is separately positioned with percussion mechanism by position-limit mechanism, it can be achieved that will limit in this way
Position mechanism is placed in inside chamber, and percussion mechanism is placed in outside chamber, so that carrying out shock accelerometer under high/low temperature
Calibration be possibly realized, realize the high/low temperature sensitivity absolute calibration of shock accelerometer.
It is to be appreciated that in the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
In order to which technical solution in the embodiment of the present invention and advantage is more clearly understood, below in conjunction with attached drawing to the present invention
Exemplary embodiment be described in more detail, it is clear that described embodiment is only that a part of the invention is implemented
Example, rather than the exhaustion of all embodiments.It should be noted that in the absence of conflict, embodiment and reality in the present invention
The feature applied in example can be combined with each other.
The embodiment of the invention provides a kind of structures excited by impact of shock accelerometer calibrating installation, as shown in Fig. 2, should
Structure includes: to be set to the position-limit mechanism inside chamber 1, be at least partially disposed at the internal hammering block 12 of limit (or to impact
Waveform generator) and percussion mechanism below position-limit mechanism.Wherein, position-limit mechanism and percussion mechanism are separately positioned, this
Sample may make position-limit mechanism to be placed on inside chamber 1, and the percussion mechanism of upthrow formula can be placed in outside chamber 1, make height
The calibration of warm shock accelerometer is possibly realized.Hammering block 12 can be sent out under the impact force action of percussion mechanism in position-limit mechanism
Raw movement realizes the calibration to shock accelerometer to generate impact acceleration.
Optionally, in some embodiments of the invention, as shown in figure 3, position-limit mechanism includes: to accelerate for carrying impact
The constraint pad 13 of meter is spent, and is set to the additional mass 14 of 13 lower section of constraint pad, additional mass 14 compresses under the effect of gravity
In in chamber 11.Wherein, position-limit mechanism is placed in inside chamber, and the biggish ceramic material of self weight may be selected and prepare additional matter
Amount 14, such additional mass 14 can tightly be pressed on the inner wall of chamber 1 under Gravitative Loads and be not susceptible to move, in hammering block
12 by impact generate impact acceleration when, additional mass 14 can also offset hammering block 12 generation impact force action.
Specifically, constrain on pad 13 and be provided with first through hole, be provided with the second through-hole on additional mass 14, first through hole and
Second through-hole is connected to form impact channel, and hammering block 12 moves in impact channel under the impact force action of percussion mechanism, this
Sample can produce displacement and the impact generated to shock accelerometer to be calibrated accelerate in the case where hammering block 12 is by impact force
Degree.Wherein, shock accelerometer can be placed in the first through hole of constraint pad 13, and first through hole provides appearance for shock accelerometer
Between emptying, and first through hole is connected to form impact channel with the second through-hole, and hammering block 12, can be by impact force
Impact is moved in channel, is converted impact acceleration for the impact force being subject to and is conducted to shock accelerometer, realizes impact
The calibration of accelerometer.Wherein, constraint pad 6 can be cushion, to protect shock accelerometer.
Further, hammering block 12 can be designed as two parts by the embodiment of the present invention, and upper part is placed within chamber 1,
It is located in position-limit mechanism, the cross sectional shape of the part may be designed as polygon, to prevent hammering block 12 when receiving percussion
Generate rotary motion.The lower part of hammering block 12 is placed in except chamber 1, that is, is located at outside position-limit mechanism, for receiving impact dress
The impact force set, to increase forced area, the cross sectional shape of the part may be designed as circle.That is, hammering block 12 is located at limit
The cross sectional shape of position part within the organization is polygon, and the cross sectional shape of first through hole and the second through-hole is to be adapted with hammering block 12
Polygon, to match.Such as shown in Fig. 4, the cross sectional shape that hammering block 12 is located at the part in position-limit mechanism is hexagon,
The cross sectional shape of part outside position-limit mechanism is circle.Position-limit mechanism interior design is the hexagon emptied, with hammering block 12
The hex size of upper part is consistent, to match.Preferably, in order to reduce the conduction of heat of hammering block 12, pottery can be used
Ceramic material prepares hammering block 12.
In other embodiments of the invention, as shown in Fig. 2, percussion mechanism includes: to be set to below position-limit mechanism
Gas big gun impactor 20, the compressed air source 15 being connected to gas big gun impactor 20, and the impact control being connect with compressed air source 15
Device processed.Compressed air source 15 exports compressed air, under the gas pressure of compressed air, gas under the control of impact controller
Big gun impactor 20 generates the impact force to hammering block 12.
Further, gas big gun impactor includes: the pipeline 16 being connected to compressed air source 15；The tune being set on pipeline 16
Depressor and valve 17；And it is set to the piston 18 inside pipeline 16, piston 18 is under the action of the air pressure of compressed air source 15
It can be moved along the extending direction of pipeline 16.Specifically, for compressed air source 15 under the control of impact controller, output compression is empty
Gas, compressed air form air pressure under the limitation of pipeline 16, push piston 18 along the extension side of pipeline 16 under the influence of air pressure
To movement.
In other embodiments of the invention, to guarantee that stablizing for percussion mechanism is fixed, as shown in Fig. 2, the impact accelerates
Spend the structure excited by impact of meter calibrating device further include: column 19, gas big gun impactor 20 are fixed on column 19.
Specifically, in order to guarantee that percussion mechanism does not shake, settable multiple fixed parts on column 19.Such as Fig. 2 institute
Show, column 19 includes: the first fixed part and the second fixed part, and the both ends of gas big gun impactor 20 are solid by the first fixed part and second
Determine portion to be fixed on column 19.It is worth noting that the embodiment of the present invention not do by the fixed part quantity on column and position
Particular determination, those skilled in the art can be according to needing that an appropriate number of fixed part is arranged in place.
The embodiment of the present invention is separately positioned, it can be achieved that position-limit mechanism is placed in percussion mechanism by position-limit mechanism in this way
Inside chamber, percussion mechanism is placed in outside chamber so that under high/low temperature carry out shock accelerometer calibration become can
Can, realize the high/low temperature sensitivity absolute calibration of shock accelerometer.
Another embodiment of the present invention additionally provides a kind of shock accelerometer calibrating installation, including adds for calibrating impact
The chamber of speedometer and above-mentioned structure excited by impact.The embodiment that above-mentioned structure excited by impact can be realized is equal
Suitable for the embodiment of the calibrating installation, and identical technical effect can be reached, therefore details are not described herein.
Further, the device include: laser interference system, temperature control system, system excited by impact (or for impact
Incentive structure, specific structure can refer to above-described embodiment) and data collector (and can be described as data collecting card)；Wherein, described
Laser interference system is used for shock accelerometer (or being shock transducer) polishing, by light focusing in shock accelerometer
Surface, adjustment optical path be allowed to interfere.System excited by impact is used to apply impact force acceleration to shock accelerometer.Number
It is used to acquire laser interference system, system excited by impact and stimulated light interference system according to collector and system excited by impact is applied
Add the analog signal of the outputs such as the shock accelerometer of effect, and converts analog signals into the school of digital signal input computer
Quasi- software and control system, to measure the standard value of shock accelerometer.Wherein, computer is for sending instruction, carrying out data
Analysis and processing, to realize the functions such as automatic calibration.Temperature control system is for controlling in shock accelerometer calibration process
Temperature.Specifically,
Laser interference system includes: the laser interferometer connecting with data collector.Wherein, laser interferometer is for liquidating
It hits accelerometer and applies impact polishing, by light focusing in the surface of shock accelerometer, adjust optical path and be allowed to interfere.
Temperature control system includes: for carrying the chamber of shock accelerometer, the temperature being set in chamber biography
Sensor, for adjust test the temperature inside the box heating part and refrigeration section, the switching circuit for gating heating part or refrigeration section, with
And the temperature controller being connect with temperature sensor, heating part and switching circuit.Specifically, the school of temperature controller and computer
Quasi- software is connected with control system, and temperature controller exports the first signal when receiving high temperature calibration command, to switching circuit,
So that switching circuit gates heating part, wherein heating part may be disposed at test for the uniformity of temperature profile in guarantee test case
On the inner wall of case surrounding, chamber temperature under the heat effect of heating part rises, the temperature sensor being set in chamber
The temperature in experimental box can be acquired in real time and feeds back to temperature controller, when temperature controller judges that the temperature in chamber reaches
Calibration temperature indicated by high temperature calibration command and when continuing preset time, control switch circuit shutdown, that is, neither gating heating
Portion does not gate refrigeration section again.Alternatively, temperature controller when receiving low-temperature calibration instruction, is believed to switching circuit output second
Number, so that switching circuit gates refrigeration section, wherein for the uniformity of temperature profile in guarantee test case, refrigeration section also be may be disposed at
On the inner wall of chamber surrounding, chamber temperature under the cooling effect of refrigeration section declines, and the temperature being set in chamber passes
Sensor can acquire the temperature in experimental box in real time and feed back to temperature controller, when temperature controller judges the temperature in chamber
When reaching the indicated calibration temperature of low-temperature calibration instruction and continuing preset time, control switch circuit shutdown, that is, neither gate
Heating part does not gate refrigeration section again.In this way, temperature control system can provide the temperature environment of calibration for shock accelerometer.Its
In, test the temperature inside the box reaches calibration temperature and continues preset time, it is ensured that environment temperature is uniform in experimental box, it is also ensured that
The temperature for reaching sensing unit inside shock accelerometer reaches calibration temperature.Specifically, heating part includes: to be set to chamber
Heater strip on inner wall, heater strip are connect with temperature controller, and temperature controller is controllable to heater strip and is powered to realize heating.
Refrigeration section can be compressor, such as may include: the liquid nitrogen compressor (or being liquid nitrogen container) connecting with switching circuit.Choosing
Relay form can be used in the switch of logical refrigeration section or heating part, and correspondingly, switching circuit may include relay, relay packet
Solenoid valve is included, the control terminal of solenoid valve is connect with temperature controller, and the input terminal of solenoid valve is connected to liquid nitrogen compressor, solenoid valve
Output end be connected to chamber.Wherein, the gas passage in chamber in settable connection case outside case, liquid nitrogen compressor generate
Refrigerant gas can be entered in chamber by the gas passage in chamber, to reduce temperature.Optionally, gas passage can wrap
Include the blowing mouth around test chamber interior wall setting.
System excited by impact include: the calibrating installation being set in chamber, the impact hammering block being arranged in calibrating installation,
Force in the percussion mechanism on impact hammering block.Wherein, shock accelerometer to be calibrated is fixed on calibrating installation, percussion mechanism
It is set to outside chamber, percussion mechanism applies impact force to impact hammering block, and impact hammering block is arranged in calibrating installation, in impact force
Under the action of generate impact force acceleration and conduct on shock accelerometer.That is, system excited by impact is for generating
To the impact signal of shock accelerometer.Optionally, calibrating installation can impact hammering block for stopping to stop limiting device
Impact acceleration, and limit the position of shock accelerometer.
In conjunction with above-described embodiment, when needing to calibrate shock accelerometer, shock accelerometer is placed in examination
On constraint pad in tryoff, the calibration software or control system of computer send calibration command, calibration command to temperature controller
Middle finger is shown with calibration temperature, and temperature controller is that heater strip is powered to realize heating or the root to chamber according to calibration temperature
Liquid nitrogen compressor is opened according to calibration temperature to realize the cooling to chamber.When the temperature in chamber reaches calibration temperature and holds
After continuous preset time, light focusing that adjustment laser interferometer issues is in the surface of shock accelerometer, while impact controller
Compressed air source delivery air is controlled, the air of output forms air pressure under the restriction effect of pipeline, to drive the work in pipeline
Plug moves upwards, and to drive shock waveform generator to pass through additional mass and constraint pad arrival shock accelerometer, formation liquidates
The impact acceleration for hitting accelerometer, the shock accelerometer when shock accelerometer is by impact acceleration, in chamber
It experiences impact acceleration and generates analog electrical signal input data collector, laser interferometer measurement is applied to impact acceleration
Impact magnitude on meter also exports analog electrical signal to data collector, and data collector will receive from laser interferometer
Analog signal as reference signal, the analog signal received from from shock accelerometer is as signal to be calibrated, to this
Two kinds of signals carry out analog-to-digital conversion, to calculate the sensitivity of shock accelerometer.The calibrating mode considers temperature and liquidates
The calibration that the influence of accelerometer is hit, it can be achieved that under high/low temperature scene, to impact accelerometer response.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of structure excited by impact of shock accelerometer calibrating installation characterized by comprising be set to chamber (11)
Internal position-limit mechanism, the hammering block (12) being at least partially disposed inside the position-limit mechanism and it is located under the position-limit mechanism
The percussion mechanism of side；Wherein, the position-limit mechanism and the percussion mechanism are separately positioned, and the hammering block (12) fills in the impact
Under the impact force action set, moved in the position-limit mechanism.
2. the structure excited by impact of shock accelerometer calibrating installation according to claim 1, which is characterized in that the limit
Position mechanism include:
For carrying the constraint pad (13) of shock accelerometer；
The additional mass (14) being set to below the constraint pad (13), the additional mass (14) are pressed under the effect of gravity
In the chamber (11).
3. the structure excited by impact of shock accelerometer calibrating installation according to claim 2, which is characterized in that it is described about
It is provided with first through hole on beam pad (13), is provided with the second through-hole on the additional mass (14), the first through hole and described
Second through-hole is connected to form impact channel, and the hammering block (12) is logical in the impact under the impact force action of the percussion mechanism
It is moved in road.
4. the structure excited by impact of shock accelerometer calibrating installation according to claim 3, which is characterized in that the anvil
Sub (12) are located at the cross sectional shape of the part in the position-limit mechanism for polygon, the first through hole and second through-hole
Cross sectional shape is compatible polygon with the hammering block (12).
5. the structure excited by impact of shock accelerometer calibrating installation according to claim 3, which is characterized in that the punching
Accelerometer is hit to be placed in the first through hole of the constraint pad (13).
6. the structure excited by impact of shock accelerometer calibrating installation according to any one of claims 1 to 5, feature exist
In the percussion mechanism includes:
The gas big gun impactor (20) being set to below the position-limit mechanism；
The compressed air source (15) being connected to the gas big gun impactor；And
The impact controller being connect with the compressed air source (15).
7. the structure excited by impact of shock accelerometer calibrating installation according to claim 6, which is characterized in that the gas
Big gun impactor (20) includes:
The pipeline (16) being connected to the compressed air source (15)；
The pressure regulator and valve (17) being set on the pipeline (16)；
It is set to the internal piston (18) of the pipeline (16), air pressure of the piston (18) in the compressed air source (15)
Effect is lower to be moved along the extending direction of the pipeline (16).
8. the structure excited by impact of shock accelerometer calibrating installation according to claim 6, which is characterized in that also wrap
Include: column (19), the gas big gun impactor (20) are fixed on column (19).
9. the structure excited by impact of shock accelerometer calibrating installation according to claim 8, which is characterized in that described vertical
Column (19) includes: the first fixed part and the second fixed part, and the both ends of the gas big gun impactor (20) pass through first fixed part
It is fixed on the column (19) with second fixed part.
10. a kind of shock accelerometer calibrating installation, which is characterized in that including the chamber for calibrating shock accelerometer,
And the described in any item structures excited by impact of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627916.2A CN110208577A (en) | 2019-07-12 | 2019-07-12 | A kind of structure excited by impact and calibrating installation of shock accelerometer calibrating installation |
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