CN208872461U - Small value force measuring instrument rapid verification calibration system - Google Patents
Small value force measuring instrument rapid verification calibration system Download PDFInfo
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- CN208872461U CN208872461U CN201821344128.XU CN201821344128U CN208872461U CN 208872461 U CN208872461 U CN 208872461U CN 201821344128 U CN201821344128 U CN 201821344128U CN 208872461 U CN208872461 U CN 208872461U
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Abstract
Small value force measuring instrument rapid verification calibration system provided by the present application is applied to the assay calibration to 60kN and 60kN or less small value force measuring instrument, and system includes standard, stress frame, loading system and software control system.Wherein, standard includes force value counterweight and load cell；To the assay calibration of the force measurement instrument less than 1.0kN, using standard force value counterweight as standard；To the assay calibration of the force measurement instrument of 1.0kN-60kN, using load cell as standard；Stress frame includes dynamometry frame and reaction frame；For the assay calibration of the force measurement instrument less than 1.0kN, using dynamometry frame；For the assay calibration of the force measurement instrument of 1.0kN-60kN, using reaction frame；Using two kinds of loading methods of manual loading and automatic load.The assay calibration system of the application can effectively improve the assay calibration efficiency to small value force measuring instrument.
Description
Technical field
The utility model relates to Force measure collimation technique field more particularly to a kind of small value force measuring instrument rapid verifications
Calibration system.
Background technique
In recent years, the paces of China's builds to foundation engineering are accelerated, and railway, highway, hydraulic engineering construction are rapidly developed,
The spring of development is brought to gage work, while also bringing stern challenge.It is the increase of workload sharply first, followed by
User is shorter and shorter to the time requirement of small value force measuring instrument assay calibration, therefore, in order to meet the needs of user, improves work
Making efficiency becomes the most important thing of Force measure work.
Current small value force measuring instrument calibration technology has the following problems: one, working efficiency is low.To 60k N and following
The assay calibration method of small value force measuring instrument mainly uses three sets of standards: Lever-type Standard Force Measuring Machine, Dead Weigh Force Standard Machine
With force value counterweight.For some work dynamometers with different ranges, one instrument of calibration is sometimes for simultaneously using more sets
Standard, therefore strong influence working efficiency, for example, calibrating one 1 grade of 20kN precision has full scale and half range
The work dynamometer of two grades of requirements, it is necessary first to which the Lever-type Standard Force Measuring Machine using force value range in 0kN-60kN carries out full scale
Calibrating, the Dead Weigh Force Standard Machine for changing to force value range later in 0kN-10kN carry out half range calibrating, it is therefore desirable to replace two
Secondary Standard Machine, simultaneously because, using raising the price step by step, the mode of static balance is every to examine and determine one when force standard machines are examined and determine
A point needs 1 minute or so, and the sensor for having examined 1 grade of this 20kN precision needs about 1 hour.Two, leapfrog amount passes.Due to work
Common small force transducer in dynamometer, pull and push dynamometer, foot brake pedal pressure gauge, cast dynamometer, plate load instrument and engineering
Precision is no greater than 1 grade, and carrying out assay calibration using 0.05 grade of force standard machines is to waste one's talent on a petty job, waste of resource, and the effect that works
Rate is lower, in addition, being frequently unfavorable for the stabilization and maintenance of Standard Machine using force standard machines.
Utility model content
In view of the above drawbacks of the prior art, the utility model provides a kind of small value force measuring instrument rapid verification calibration system
System.
The application provides a kind of small value force measuring instrument rapid verification calibration system, is applied to small to 60kN and 60kN or less
The assay calibration of force measurement instrument, the assay calibration system include: standard, stress frame, loading system and software control
System processed；
The standard includes: force value counterweight and load cell；The force value counterweight is the standard force value weight of 0-1000N
Code；The load cell includes two kinds of 0.3 grade standard dynamometer of drawing and pressing type, force value range be respectively 3kN-60kN,
0.3kN-3kN；To the assay calibration of the force measurement instrument less than 1.0kN, using standard force value counterweight as standard；It is right
The assay calibration of the force measurement instrument of 1.0kN-60kN, using load cell as standard；
The stress frame includes: dynamometry frame and reaction frame；For the calibrating school of the force measurement instrument less than 1.0kN
Standard, using dynamometry frame；For the assay calibration of the force measurement instrument of 1.0kN-60kN, using reaction frame；The dynamometry frame is adopted
It is 2.0kN stress support with bearing capacity, the reaction frame uses bearing capacity for the portal frame of 12T；
The loading system is by speed change loading device, recording controller, TT&C software, AC servo motor and AC servo
Motor driver composition；The loading system loads two kinds of loading methods using manual loading and automatically；
The software control system includes: parameter determination module, calibrating control module, data acquisition and processing (DAP) module；With
Family sets corresponding standard, calibrating by the parameter determination module according to the force measurement range of accredited measuring instrument
Point, loading velocity and precompressed；The calibrating control module is provided with calibrating, continuation, pause, end functions option；The number
It is used to acquire the calibrating data to small value force measuring instrument according to acquisition and processing module, and is automatically performed to the calibrating data
Calculation processing generates calibration data.
Small value force measuring instrument rapid verification calibration system as described above, it is preferable that
The stress support of the dynamometry frame is telescopic stress support；The height of the stress support of the dynamometry frame is
1.8m, length 1.5m；The dynamometry frame further includes 5 pull rings, and the bearing capacity of pull ring is 1.5kN；
The portal frame size of the reaction frame are as follows: 600 × 2000 × 500mm, the intermediate transverse girder of portal frame is by diameter
For 50mm, the ball screw that screw pitch is 10mm is driven, and the free travel of portal frame is 1.6m, and limits equipped with maximum distortion
Device.
Small value force measuring instrument rapid verification calibration system as described above, it is preferable that
Bearing plate is installed in the reaction frame bottom, center graduation mark is carved on bearing plate, in being aligned by test examination instrument
The heart；Pulling force support is installed, pull rod is in free hang, to reduce the friction by test examination instrument during loading at the top of reaction frame
Power, standard are mounted on the crossbeam of reaction frame.
Small value force measuring instrument rapid verification calibration system as described above, wherein the manual loading is to pass through handwheel
Rotation drives commutator rotation, and lateral rotation is changed into vertical rotation by commutator, then drives motor rotation by speed changer；It is described
Automatic load is that AC servo motor and the operation of AC servo machinery driving device are controlled by computer program, and applicable motor is
1500W, speed responsive frequency are 2kHz, loading velocity 0.01mm/min-500mm/min, and pressure is maintained at ± 3N/1000N.
Small value force measuring instrument rapid verification calibration system provided by the present application, utilizes existing dynamometer standard and power
It is worth counterweight, processes corresponding stress frame and loading mechanism, using two kinds of loading methods of manual loading and automatic load, Neng Gouyou
Effect improves the assay calibration efficiency to small value force measuring instrument, especially suitable for 60kN and 60kN or less small value force measuring instrument
Assay calibration.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the small value force measuring instrument rapid verification calibration system of the application；
Fig. 2 is the software control system interface signal in the small value force measuring instrument rapid verification calibration system of the application
Figure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Fig. 1 is the structural schematic diagram of the small value force measuring instrument rapid verification calibration system of the application.Refering to what is shown in Fig. 1,
Small value force measuring instrument rapid verification calibration system provided by the present application is applied to 60kN and 60kN or less small value force measuring instrument
The assay calibration of device, assay calibration system include: standard, stress frame, loading system and software control system.Wherein, it marks
Quasi- device includes: force value counterweight and load cell；Force value counterweight is the standard force value counterweight of 0-1000N；Load cell includes
Two kinds of 0.3 grade standard dynamometer of drawing and pressing type, force value range is respectively 3kN-60kN, 0.3kN-3kN；To less than 1.0kN
Force measurement instrument assay calibration, using standard force value counterweight as standard；To the force measurement instrument of 1.0kN-60kN
The assay calibration of device, using load cell as standard.Stress frame includes: dynamometry frame and reaction frame；For being less than
The assay calibration of the force measurement instrument of 1.0kN, using dynamometry frame；For the calibrating school of the force measurement instrument of 1.0kN-60kN
Standard, using reaction frame；Dynamometry frame uses bearing capacity for 2.0kN stress support, and reaction frame uses bearing capacity for the gate-type frame of 12T
Frame.Loading system is by speed change loading device, recording controller, TT&C software, AC servo motor and AC servo machinery driving
Device composition；Loading system loads two kinds of loading methods using manual loading and automatically.Software control system includes: that parameter determines mould
Block, calibrating control module, data acquisition and processing (DAP) module；User passes through according to the force measurement range of accredited measuring instrument
Parameter determination module sets corresponding standard, calibrating point, loading velocity and precompressed；Calibrating control module be provided with calibrating,
Continue, pause, end functions option；Data acquisition and processing (DAP) module is used to acquire the calibrating data to small value force measuring instrument,
And it is automatically performed the calculation processing to calibrating data, generate calibration data.
It in a particular application, can be according to vertification regulation JJG455-2000 " work measurement instrument " and accredited calibration instrument
The related request of operation instructions processes correspondingly stress frame using existing third dynamometer standard and force value counterweight
And loading mechanism, it is developed into a set of small value force quick-loading system, so that the system is able to satisfy 1 class precision and its following precision
The requirement of small value force transmission of quantity value.
For example, the assay calibration of the measuring instrument for force value 1kN-60kN, is with electronic universal tester loading frame
Basis changes its mechanical structure, is allowed to not only to can be carried out frequency control and loads automatically, but also the manual loading that can be carried out convenient for research,
It changes and adds the loading method of counterweight step by step using 0.05 grade of force standard machines, to greatly improve working efficiency.Standard
Device is made of two sets of primary standards, be Putian City go away for some great undertakings sensor Co., Ltd production 0.3 grade standard dynamometer of drawing and pressing type,
In a set of force value range be (3-60) kN, the force value range of other set is (0.3-3) kN.
Use bearing capacity for the testing machine portal frame of 100kN, greater than twice of maximum load force value 60kN, as far as possible
Reduce stress frame to be deformed in loading process.Stress frame size: 600 × 2000 × 500mm, intermediate transverse girder is by straight
Diameter is 50mm, and the Special precision ball screw that screw pitch is 10mm drives, free travel 1.6m, and limits equipped with maximum distortion
Device.Bearing plate is installed in stress frame bottom, is carved with center graduation mark on bearing plate, convenient for by test examination instrument centring；Stress frame
Top of the trellis installs pulling force support, and pull rod is in free hang, reduces the frictional force by test examination instrument during loading, standard
It is mounted on crossbeam.Frame deforms under peak load meets code requirement.Test result is as follows for beam deformation shown in table 1.
The beam deformation test result table of 1 portal frame of table
| Apply load (kN) | 5 | 30 | 60 |
| Beam deformation (mm) | 0.000 | 0.001 | 0.003 |
Loading system is by hand gear loading device, recording controller, TT&C software, AC servo motor and AC servo
Driver composition.It is loaded using two ways: manual loading and automatic load.Manual charging mechanism is to rotate to drive by handwheel
Commutator rotation, lateral rotation is changed into vertical rotation by commutator, then drives motor rotation by speed changer.Autoloading structure
It is that AC servo motor and AC servo driver operation are controlled by computer program, being applicable in motor is 1500W, speed responsive frequency
Rate is 2kHz, and loading velocity is controllably changed in (0.01-500) mm/min, and pressure is maintained at ± 3N/1000N.Calibration fills when work
It sets and is loaded according to the speed auto-changing speed of setting.The selection of two kinds of loading methods be according to the characteristics of checked object and
Selection, for having a large capacity and a wide range, common work dynamometer is suitble to select autoloading structure, and for more special, amount is few
Checked object, be suitble to use manual loading mode.
Fig. 2 is the software control system interface signal in the small value force measuring instrument rapid verification calibration system of the application
Figure.As shown in Fig. 2, the design of software can be according to JJG455-2000 and the Experience Design of daily calibrating.Soft control system is
The key component of entire standard set-up.Software control system generally contains three modules: parameter determination module, calibrating control
Module, data acquisition and processing (DAP) module.
Parameter determination module is the measurement range according to checked object, sets corresponding standard, calibrating point, load speed
Degree and precompressed.Parameter setting is with certain empirical, can be with for the measurand of same type, when parameter setting
It is constant.Pre-pressing function is to rapidly return back to zero point after being quickly added to rated value with faster loading velocity.
Control module is examined and determine, is edited according to the requirement of JJG455-2000, is had " calibrating ", " continuation ", " temporarily
Stop " and " end " function.It works after the completion of dynamometer precompressed, by calibrating function, standard set-up will be automatically loaded into setting
Target value.When close to target value, system uses sound prompt function, and verification worker is reminded to record tested instrument data.It was examining and determine
Cheng Zhong after encountering problems, can choose " pause ", " continuation " and " end " function.
Data acquisition and data processing module, when being loaded into the target value of setting, system voice prompt, and pop up input
The worth dialog box of checked object after input, is automatically loaded into next target value.After the completion of calibrating, data processing button is pressed, is
System will measure ground data automatically and be transferred in excel table, and be automatically performed data calculating.
It is mixed by being formed using force value counterweight and standard transducer for the assay calibration of the measuring instrument of force value 0-1kN
Standardization device group, can be convenient the standard for efficiently replacing different ranges, when measurement is less than the force value of 1.0kN, using power
It is worth counterweight as standard；And when measuring the force value greater than 1.0kN less than 50kN, using sensor as power standard.Using development
Telescopic stress support can be convenient and efficiently carry out counterweight increasing load test to the various tension instruments of 1kN or less force value.Standard
Device selects 0-1000N standard force value counterweight, and it is highly 1.8m that stress support bearing capacity, which is 2.0kN, length 1.5m.Pull ring 5
A, pull ring bearing capacity is 1.5kN.
Using the small value force measuring instrument rapid verification calibration system of the embodiment of the present application to one 1 grade of 20kN precision of tool
Have full scale and the load cells of two grades of half range requirements when being examined and determine, due to quickly load using motor and it is manual at a slow speed
The loading method and multrirange mixed type power standard group combined is loaded, calibrating, work effect can be completed in 10 minutes
Rate improves 6 times.Small value force quick-loading system will improve working conditions comprehensively and method, greatly improves working efficiency and work
Make timeliness.
Result verification:
According to the regulation in JJF1033-2008 " measurement criteria examination specification " C.5.2.1, using comparative transmission to this
The small value force measuring instrument rapid verification calibration system of application embodiment measures result verification.Comparative transmission refers to quilt
The work dynamometer standard verification apparatus of examination measures a stable object, then by another more advanced lever of the object
Power standard set-up measures, if development uncertainty when the two measures is UlabAnd Uref, k is 2, the two measured value
Respectively ylabAnd yref, then the two should meet
Two stable measurands, a sensor for 30kN are taken, a proving ring for 30kN is working respectively
Dynamometer calibrating installation and Lever-type Standard Force Measuring Machine measure, and measurement result is shown in Table 2.
2 measurement result proof list of table
Result above is brought into formula (1), is obtained:
(1) proving ring is verified
For 3kN point:
I.e. 0.001 < 0.002, it meets the requirements；
For 30kN point:
I.e. 0.004 < 0.011, it meets the requirements；
(2) sensor is verified
For 3kN point:
I.e. 0.003 < 0.0032, it meets the requirements；
For 30kN point:
I.e. 0.02 < 0.022, it meets the requirements；
From the point of view of the result verified above, whether proving ring or sensor can meet force value tracing requirement.
By taking a 30kN work dynamometer calibrating as an example, using the work dynamometer standard verification apparatus of the embodiment of the present application
It is examined and determine, the timing since precompressed, after precompressed 3 times, process value testing 3 times, calibrating terminates and handles data, institute's used time well
Between for 20 points 35 seconds.And same sample, it is examined and determine using Lever-type Standard Force Measuring Machine and handles data well the time 45 is spent to divide altogether
13 seconds, it is seen that can biggish raising work using the small value force measuring instrument rapid verification calibration system device of the embodiment of the present application
Make efficiency.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (4)
1. a kind of small value force measuring instrument rapid verification calibration system is applied to 60kN and 60kN or less small value force measuring instrument
Assay calibration, which is characterized in that the assay calibration system includes: standard, stress frame, loading system and processor；
The standard includes: force value counterweight and load cell；The force value counterweight is the standard force value counterweight of 0-1000N；
The load cell includes two kinds of 0.3 grade standard dynamometer of drawing and pressing type, force value range be respectively 3kN-60kN,
0.3kN-3kN；To the assay calibration of the force measurement instrument less than 1.0kN, using standard force value counterweight as standard；It is right
The assay calibration of the force measurement instrument of 1.0kN-60kN, using load cell as standard；The stress frame includes:
Dynamometry frame and reaction frame；For the assay calibration of the force measurement instrument less than 1.0kN, using dynamometry frame；For 1.0kN-
The assay calibration of the force measurement instrument of 60kN, using reaction frame；The dynamometry frame uses bearing capacity for 2.0kN stress support,
The reaction frame uses bearing capacity for the portal frame of 12T；
The loading system is by speed change loading device, recording controller, TT&C software, AC servo motor and AC servo motor
Driver composition；The loading system loads two kinds of loading methods using manual loading and automatically；
The processor is mounted with software control system, and the processor generates calibration data by the software control system.
2. small value force measuring instrument rapid verification calibration system according to claim 1, which is characterized in that
The stress support of the dynamometry frame is telescopic stress support；The height of the stress support of the dynamometry frame is 1.8m, long
Degree is 1.5m；The dynamometry frame further includes 5 pull rings, and the bearing capacity of pull ring is 1.5kN；
The portal frame size of the reaction frame are as follows: the intermediate transverse girder of 600 × 2000 × 500mm, portal frame is by diameter
50mm, the ball screw that screw pitch is 10mm drive, and the free travel of portal frame is 1.6m, and maximum distortion limiter is housed.
3. small value force measuring instrument rapid verification calibration system according to claim 2, which is characterized in that
Bearing plate is installed in the reaction frame bottom, center graduation mark is carved on bearing plate, in order to by test examination instrument centring；Instead
Power top of the trellis installs pulling force support, and pull rod is in free hang, to reduce the frictional force by test examination instrument during loading, mark
Quasi- device is mounted on the crossbeam of reaction frame.
4. small value force measuring instrument rapid verification calibration system according to claim 1-3, which is characterized in that
The manual loading is to rotate to drive commutator rotation by handwheel, and lateral rotation is changed into vertical rotation by commutator,
Motor rotation is driven by speed changer again；The automatic load is that AC servo motor and AC servo electricity are controlled by computer program
The operation of machine driver, being applicable in motor is 1500W, and speed responsive frequency is 2kHz, loading velocity 0.01mm/min-500mm/
Min, pressure are maintained at ± 3N/1000N.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965019A (en) * | 2021-03-22 | 2021-06-15 | 云南省计量测试技术研究院 | Multidimensional intelligent compensation method for high-power current divider |
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2018
- 2018-08-20 CN CN201821344128.XU patent/CN208872461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965019A (en) * | 2021-03-22 | 2021-06-15 | 云南省计量测试技术研究院 | Multidimensional intelligent compensation method for high-power current divider |
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