CN209247819U - It is a kind of for calibrating the impact test apparatus of acceleration transducer - Google Patents
It is a kind of for calibrating the impact test apparatus of acceleration transducer Download PDFInfo
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- CN209247819U CN209247819U CN201920069535.2U CN201920069535U CN209247819U CN 209247819 U CN209247819 U CN 209247819U CN 201920069535 U CN201920069535 U CN 201920069535U CN 209247819 U CN209247819 U CN 209247819U
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- acceleration transducer
- test apparatus
- impact test
- platform base
- calibrated
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- 230000001133 acceleration Effects 0.000 title claims abstract description 79
- 238000009863 impact test Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 206010016173 Fall Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
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Abstract
The utility model discloses a kind of for calibrating the impact test apparatus of acceleration transducer, it includes platform base and standard force snesor, several support rods are fixedly installed on the platform base vertically, the support bar top level is equipped with top plate, and the standard force snesor is set on platform base；The impact test apparatus further include drop hammer, acceleration transducer to be calibrated, acceleration acquisition device and impact force acquisition device, the acceleration transducer to be calibrated is removably set to top of dropping hammer, the acceleration transducer to be calibrated is connect by signal wire with acceleration acquisition device, and the standard force snesor is connect by signal wire with impact force acquisition device.The impact test apparatus realizes the calibration to acceleration transducer；The impact test apparatus structure is simple, easy to operate, at low cost, and calibration accuracy is high, the calibration suitable for wide-range acceleration transducer.
Description
Technical field
The utility model relates to a kind of impact test apparatus, are specifically related to a kind of for calibrating rushing for acceleration transducer
Hit experimental rig.
Background technique
Acceleration transducer is a kind of sensor that can measure moving object acceleration, and acceleration transducer is object at present
The test sensor generally used in the test such as body mode, vibration, impact.For the reliability of guarantee test result, it is desirable that add
Velocity sensor must be calibrated periodically.Practical application alignment method usually requires that selection frequently with standardization is compared
High-precision shake table, the maintenance of one side equipment are not easy；On the other hand costly, increase cost input.Moreover, for a large amount of
For the acceleration transducer of journey, shake table is often difficult to generate higher excitation acceleration.Therefore, it is necessary to design a kind of letter
The impact test apparatus for being used to calibrate acceleration transducer of folk prescription just, securely and reliably.
Utility model content
To overcome the shortcomings of existing technologies, the purpose of this utility model is that: provide a kind of for calibrating acceleration sensing
The impact test apparatus of device, which solve maintenances present in existing calibration wide-range acceleration transducer device to be not easy, expense
The technical problems as described above such as height, cost input height.
The utility model solves technical problem and adopts the following technical scheme that
It is a kind of for calibrating the impact test apparatus of acceleration transducer comprising platform base and standard force snesor,
Several support rods are fixedly installed on the platform base vertically, the support bar top level is equipped with top plate, and the proof force passes
Sensor is set on platform base；The impact test apparatus further include drop hammer, acceleration transducer to be calibrated, acceleration acquisition dress
Force acquisition device is set and impacts, the acceleration transducer to be calibrated is removably set to top of dropping hammer, described to be calibrated
Acceleration transducer is connect by signal wire with acceleration acquisition device, and the standard force snesor passes through signal wire and impact force
Acquisition device connection；Several slide bars are vertically arranged between the platform base and top plate, the side of dropping hammer is equipped with hangers, and institute
Stating hangers can be along the opposite sliding of slide bar；The acceleration transducer to be calibrated and standard force snesor be respectively positioned on drop hammer it is vertical
On center line.
There is also following technical characteristics for the utility model:
Preferably, through-hole is equipped at the roof center, the acceleration transducer to be calibrated and acceleration acquisition fill
Through-hole setting of the signal wire on top plate between setting.
Preferably, scale is equipped between the platform base and top plate vertically.
Preferably, the scale bottom, which is equipped with, is turned up gasket.
Preferably, several leveling knobs are arranged in the platform base bottom.
Preferably, the platform base is equipped with level meter.
Compared with the prior art, the beneficial effects of the utility model are embodied in: this is used to calibrate rushing for acceleration transducer
Hitting experimental rig realizes calibration to wide-range acceleration transducer；The impact test apparatus structure is simple, easy to operate, at
This is low, and calibration accuracy is high, the calibration suitable for wide-range acceleration transducer.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Wherein: 1- platform base, 2- standard force snesor, 3- support rod, 4- top plate, 5- drop hammer, acceleration 6- to be calibrated
Sensor, 7- acceleration acquisition device are spent, 8- impacts force acquisition device, 9- slide bar, 10- hangers, 11- through-hole, 12- scale, 13-
Gasket is turned up, 14- levels knob, 15- level meter.
Specific embodiment
Shown in referring to Fig.1, details are as follows for the structure feature of the impact test apparatus to sheet for calibrating acceleration transducer:
It is a kind of for calibrating the impact test apparatus of acceleration transducer comprising platform base 1 and standard force snesor
2, several support rods 3 are fixedly installed on the platform base 1 vertically, 3 top horizontal of support rod is equipped with top plate 4, the mark
Quasi- force snesor 2 is set on platform base 1；The impact test apparatus further include drop hammer 5, acceleration transducer 6 to be calibrated, plus
Speed acquisition device 7 and impact force acquisition device 8, the acceleration transducer 6 to be calibrated are removably set to 5 tops of dropping hammer
Portion, the acceleration transducer 6 to be calibrated are connect by signal wire with acceleration acquisition device 7, the standard force snesor 2
It is connect by signal wire with impact force acquisition device 8.
Specifically, platform base 1 uses solid irony cuboid；There are four support rod 3 is set, and it is located at solid irony
At the corner location of 1 upper surface of platform base of cuboid；Wherein, 3 bottom end of support rod is vertically welded on platform base 1, branch
3 top peripheral of strut is equipped with screw thread, and top plate 4 is run through on 3 top of support rod, is screwed.
Standard force snesor 2 is drawn from horizontal direction using the force snesor for passing through upper level correcting mechanism calibration validation
Signal wire with impact force acquisition device 8 connect, on platform base 1 in drop hammer 5 following position directly at be fixed with screw rod, standard
2 bottom of force snesor is equipped with screw thread compatible with screw rod, and standard force snesor 2 is detachably connected with platform base 1.Drop hammer 5
Using solid cylinder；Screw rod is fixed at 5 top centers of dropping hammer, 6 bottom of acceleration transducer to be calibrated is equipped with and spiral shell
The compatible screw thread of bar, acceleration transducer 6 to be calibrated 5 are detachably connected with dropping hammer.
Several slide bars 9 are vertically arranged between the platform base 1 and top plate 4,5 sides of dropping hammer are equipped with hangers 10, and
The hangers 10 can be along the opposite sliding of slide bar 9.Wherein, 9 smooth outer surface of slide bar, convenient for guiding 5 downslides of dropping hammer.
Specifically, there are two slide bar 9 sets, and 9 bottom end of slide bar is fixedly connected with platform base 1, top plate is run through on 9 top of slide bar
4 are threadedly coupled；What hangers 10 opposed is set to 5 outsides of dropping hammer, wherein hangers 10 is arranged through slide bar 9, and hangers 10 can be along slide bar
9 opposite slidings.
In addition, the acceleration transducer 6 and standard force snesor 2 to be calibrated be respectively positioned on drop hammer 5 vertical centerline
On；The accuracy of the impact test apparatus can be improved.
As a preferred embodiment of the present invention, as shown in connection with fig. 1；
Preferably, through-hole 11 is equipped at 4 center of top plate, the acceleration transducer 6 to be calibrated is adopted with acceleration
Through-hole 11 of the signal wire on top plate 4 between acquisition means 7 is arranged.It can be by the signal of acceleration transducer 6 to be calibrated
Line is drawn above top plate 4, reduces the measurement error due to caused by signal wire.
Scale 12 is equipped between the platform base 1 and top plate 4 vertically；The height for 5 free-fallings of dropping hammer can be identified；It is right
Than drop hammer every time 5 fall away from and corresponding impact force value, subsequent impact test for several times can according to record adjustment fall away to generate spy
Surely the force value of range is needed.
Further, 12 bottom of scale, which is equipped with, is turned up gasket 13；For adjusting starting point and the proof force of scale 12
The overhead height of sensor 2 is consistent；So as to the more accurate height for obtaining 5 free-fallings of dropping hammer.
Specifically, scale 12 is arranged two, it is respectively placed in 1 both ends of platform base, wherein 4 bottom of top plate and scale 12 push up
The corresponding position at end is equipped with mounting portion, so as to which 12 bottom end of scale is placed on platform base 1,12 top of scale and 4 bottom of top plate
The mounting portion in portion cooperates strong fix；Wherein groove or strip hole can be used in mounting portion.When what standard force snesor 2 consolidated is placed in
When on platform base 1, it is placed in 12 bottom of scale using gasket 13 is turned up, makes the starting point of scale 12 and standard force snesor 2
Upper surface is in same horizontal line, so as to accurately record the height for 5 free-fallings of dropping hammer.
For the accurate level for improving the impact test apparatus, guarantee the stationarity of platform base 1；1 bottom of platform base
Several leveling knobs 14 are arranged in portion；Specifically, four are arranged at the 1 bottom four corners position of platform base of solid irony cuboid
Level knob 14；Platform base 1 can be kept firm by adjusting corresponding leveling knob 14.
For the accurate level for further increasing the impact test apparatus, guarantee the level requirement of platform base 1, the platform
Pedestal 1 is equipped with level meter 15.
This is used to calibrate the impact test apparatus of acceleration transducer in calibration, and concrete operations are as follows:
1) measurement drop hammer 5 quality mc；
2) standard force snesor 2 is installed on platform base 1, and it is passed through into signal wire and impact force acquisition device 8
Connection；
3) it can be needed to pad padded coaming, such as rubber pad, nylon cushion in 2 upper surface of standard force snesor according to measurement；
4) height of gasket 13 is turned up in adjustment, so that the starting point of scale 12 and the upper surface of standard force snesor 2 are in
Same horizontal line；
5) the quality m of acceleration transducer 6 and its signal wire to be calibrated is measuredj；
6) acceleration transducer 6 to be calibrated is fixedly installed in and is dropped hammer on 5, so that acceleration transducer 6 to be calibrated,
Drop hammer 5,2 center of standard force snesor coincidence；Then acceleration transducer 6 to be calibrated is acquired by signal wire and acceleration
Device 7 connects；
7) will drop hammer 5 lifting certain altitudes, and loosing one's grip makes it fall naturally；When drop hammer 5 shock standard force snesor 2 when, punching
Hit the maximum impact force value f that 8 record standard force snesor 2 of force acquisition device is subject tos, acceleration acquisition device 7 records to be calibrated
Acceleration transducer 6 export maximum voltage value u, record drop hammer 5 height；
At this point, the power that 5 are subject to of dropping hammer is fn=fc+fg, wherein fgFor 5 gravity being subject to that drop hammer, fcIt is rushed for what collision generated
Hit power.
According to Newton's third law, at this point, dropping hammer 5 by impact force f equal in magnitude, contraryc=-fs；
According to Newton's second law, at this point, drop hammer 5 acceleration a and its stress between relationship are as follows: fn=a* (mc+
mj)；
5 peak acceleration it is consequently possible to calculate this hammering process is dropped hammer are as follows:
A=fn/(mc+mj)；
8) due to acceleration transducer 6 to be calibrated and to drop hammer between 5 be rigid connection, so their fortune having the same
Dynamic state, i.e., 6 peak acceleration of acceleration transducer to be calibrated is also a；
9) the sensitivity k of current acceleration transducer 6 to be calibrated is calculated are as follows:
K=u/a=u* (mc+mj)/fn=u* (mc+mj)/(fg+fc)=u* (mc+mj)/(fg-fs)
During actual alignment, if | fs| it is much larger than | fg| then can approximation obtain k ≈-u* (mc+mj)/fs；Otherwise, it adopts
Use fg=(mc+mj) * g, it substitutes into formula and is calculated；G is acceleration of gravity, and general calculate chooses g ≈ 9.8m/s2It is calculated.
10) in the nominal measurement range of acceleration transducer 6 to be calibrated, between the height for 5 liftings of dropping hammer successively is waited
Every carry out many experiments, repeat step 7) to step 9) measure, can be obtained about acceleration transducer 6 to be calibrated
The calibration curve of sensitivity；
11) comparison every time drop hammer 5 height and impact force acquisition device 8 record corresponding standard force snesor 2 by
Maximum impact force value fs, it is subsequent can according to record, adjust drop hammer 5 height, to generate the force value of specific needs range.
The utility model provides a kind of for calibrating the impact test apparatus of acceleration transducer, realizes to wide range
The accurate calibration of acceleration transducer；The impact test apparatus structure is simple, easy to operate, at low cost, flexibly and fast, is suitable for
The calibration of wide-range acceleration transducer.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of for calibrating the impact test apparatus of acceleration transducer comprising platform base (1) and standard force snesor
(2), it is fixedly installed vertically several support rods (3) on the platform base (1), support rod (3) top horizontal is equipped with top plate
(4), the standard force snesor (2) is set on platform base (1)；It is characterized by: the impact test apparatus further includes dropping hammer
(5), acceleration transducer to be calibrated (6), acceleration acquisition device (7) and impact force acquisition device (8), it is described to be calibrated
Acceleration transducer (6) is removably set to (5) top of dropping hammer, and the acceleration transducer (6) to be calibrated passes through signal wire
It is connect with acceleration acquisition device (7), the standard force snesor (2) is connect by signal wire with impact force acquisition device (8)；
It being vertically arranged several slide bars (9) between the platform base (1) and top plate (4), (5) side of dropping hammer is equipped with hangers (10),
And the hangers (10) can be along slide bar (9) opposite sliding；The acceleration transducer (6) and standard force snesor to be calibrated
(2) be respectively positioned on drop hammer (5) vertical centerline on.
2. according to claim 1 a kind of for calibrating the impact test apparatus of acceleration transducer, it is characterised in that: institute
State and be equipped with through-hole (11) at top plate (4) center, the acceleration transducer (6) to be calibrated and acceleration acquisition device (7) it
Between through-hole (11) setting of the signal wire on top plate (4).
3. according to claim 1 a kind of for calibrating the impact test apparatus of acceleration transducer, it is characterised in that: institute
It states and is equipped with scale (12) vertically between platform base (1) and top plate (4).
4. according to claim 3 a kind of for calibrating the impact test apparatus of acceleration transducer, it is characterised in that: institute
It states scale (12) bottom and is equipped with height-regulating gasket (13).
5. according to claim 1 a kind of for calibrating the impact test apparatus of acceleration transducer, it is characterised in that: institute
It states platform base (1) bottom and several leveling knobs (14) is set.
6. according to claim 1 a kind of for calibrating the impact test apparatus of acceleration transducer, it is characterised in that: institute
Platform base (1) is stated equipped with level meter (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069535.2U CN209247819U (en) | 2019-01-18 | 2019-01-18 | It is a kind of for calibrating the impact test apparatus of acceleration transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069535.2U CN209247819U (en) | 2019-01-18 | 2019-01-18 | It is a kind of for calibrating the impact test apparatus of acceleration transducer |
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|---|---|
| CN209247819U true CN209247819U (en) | 2019-08-13 |
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| CN201920069535.2U Expired - Fee Related CN209247819U (en) | 2019-01-18 | 2019-01-18 | It is a kind of for calibrating the impact test apparatus of acceleration transducer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413518A (en) * | 2020-05-11 | 2020-07-14 | 苏州笛灵科技有限公司 | Falling body type impact calibration device |
| CN114166663A (en) * | 2021-11-19 | 2022-03-11 | 中煤科工开采研究院有限公司 | Drop hammer impact experimental device and method |
| CN115389098A (en) * | 2022-08-16 | 2022-11-25 | 西北核技术研究所 | Calibration device for free-fall impact sensor |
| WO2023221236A1 (en) * | 2022-05-16 | 2023-11-23 | 天津航天瑞莱科技有限公司 | Crash impact test device for jet fuel pipeline |
-
2019
- 2019-01-18 CN CN201920069535.2U patent/CN209247819U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413518A (en) * | 2020-05-11 | 2020-07-14 | 苏州笛灵科技有限公司 | Falling body type impact calibration device |
| CN114166663A (en) * | 2021-11-19 | 2022-03-11 | 中煤科工开采研究院有限公司 | Drop hammer impact experimental device and method |
| WO2023221236A1 (en) * | 2022-05-16 | 2023-11-23 | 天津航天瑞莱科技有限公司 | Crash impact test device for jet fuel pipeline |
| CN115389098A (en) * | 2022-08-16 | 2022-11-25 | 西北核技术研究所 | Calibration device for free-fall impact sensor |
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Granted publication date: 20190813 Termination date: 20210118 |