CN1011071B - Calibration and calibrator of electronic belt balance - Google Patents
Calibration and calibrator of electronic belt balanceInfo
- Publication number
- CN1011071B CN1011071B CN 88102734 CN88102734A CN1011071B CN 1011071 B CN1011071 B CN 1011071B CN 88102734 CN88102734 CN 88102734 CN 88102734 A CN88102734 A CN 88102734A CN 1011071 B CN1011071 B CN 1011071B
- Authority
- CN
- China
- Prior art keywords
- counterweight
- electronic balance
- belted electronic
- verification
- checker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Abstract
The present invention relates to a method of calibrating an electronic belt scale. The method can replace an object method to implement full range equal-distance multipoint calibration for an electronic belt scale on industrial site, and a dynamic characteristic equation of characterization metering accuracy is deduced to describe the metering condition of the electronic belt scale. The method conforms to the requirements of a quantity value transfer specification, and can increase calibrating accuracy, and moreover, the manpower, the material resources and the time consumed by the calibration are saved. A special device designed for implementing the method is called as a superposition calibrating device which is a vehicle-shaped standard of which the quality conforms to the technical requirements of fourth grade technical weights.
Description
The invention belongs to field of measuring techniques, is the verification means of Dynamic Weighting instrument.Can be easily the metering of the belted electronic balance that is installed in industry spot be adjusted and demarcated, make it to reach optimum, guarantee measuring accuracy.
Belted electronic balance, its zero-bit are regulated and full value adjusting device all has the range of adjustment of broad, to adapt to the actual conditions of infield.For the belted electronic balance that is installed in industry spot, must after install, carry out concrete demarcation on the spot and just can predict its measuring accuracy; Have only through adjusting repeatedly and just can reach the accuracy class of dispatching from the factory.
The scaling method in past all uses real object method.The material object that is about to some as the substitute of quality standard, by by the comparison of the readout of the belted electronic balance in school and this scale, obtains the measuring accuracy grading index after weighing through the higher static weighing apparatus of precision.In addition, also have some householder methods such as roller chain method, chain code method, link code method, rider method etc., but certain shortcoming is all arranged, have any problem in the enforcement.Make the on-the-spot scale adjustment of using less than optimum, can not break away from the final demarcation of real object method.
Though real object method is a scaling method the most intuitively, and the some shortcomings part is also arranged.For example for the feature of dynamic measurement: in the regulation range, the difference of the shown error amount of different flow can't be measured with real object method.With real object method verification belted electronic balance, material object that need be relatively large, the carrying number of times is more in the operation process.One accidentally misalignment in kind will take place slightly, thereby the success ratio of field-checking is lower.Owing to above-mentioned situation and some other reason, the adjustment of the belted electronic balance that industry spot is used is the difficult problem on the measurement technology always.
In existing belt conveyer scale calibration equipment, the Soviet Union has proposed a kind of by being fixed on the some dollies on the flexible member, act on above the travelling belt, stack the weight through the magnetization processing of changeable on the dolly, one end of flexible member is tightly held, and the other end is dragged near the place that turns to drum always, but such calibration equipment, can not guarantee because dolly left and right sides sideslip always takes place when moving on belt that verification is working properly carries out, and weight has magnetic, influence checking precision, thereby be worthless.Implementation process can only be carried out verification by mechanical belt conveyer scale to specific certain, moves very inconvenient.(seeing Soviet Union patent of invention card SU-530192, on November 24th, 1976).
Task of the present invention is sought measurement standards such as a kind of direct use technical weights exactly, avoid adopting material object to make the standard substitute and implement method the demarcation and the verification work of industrial electronic belt conveyer scale, with verification of gap multiple spot and raising measuring accuracies such as realization belted electronic balance gamuts, reduce the verification operation labor intensity.
The stack check addition is based on the equivalent relation between the formed uniformly distributed load of the material that passes through on the belted electronic balance and the centre-point load that loads counterweight formation, and total effect of suffered load submits to the superposition principle of continuous beam when stressed on the belt.The superposing type checker is the main device that the weight of counterweight is applied to the simulation distributed load that forms in kind on the belted electronic balance effective weighing section.This device is for having the vehicle instrument of several wheels, and sole mass is stable, and its uncertainty satisfies the requirement of level Four technical weights.Wheelspan is regulated with flexible screw rod, and relative accuracy reaches ± and 0.1%.The center of gravity that loads counterweight acts on the wheel subcenter, makes it to form position centre-point load accurately.There is the tuning structure at the checker two ends, the time can finely tune and weighing apparatus certainly in operation, are not subjected to the interference of belt vibration and sideslip when making operation, keep stable.
The technical indicator that the present invention proposes has also proposed new requirement from the dynamic perfromance aspect except that static relative error index.The checking data that this method records is handled and can be obtained with mathematical statistics method
=ax
bApproximate dynamic characteristic equation.This number reason formula has been described the dynamic measurement characteristic of on-the-spot belted electronic balance than static relative error expression formula more perfectly, thereby judges the quality of its metering situation.Can also further be transferred to the optimum operation situation to scale.
The present invention has following advantage: 1. accuracy.The uncertainty of calibration equipment itself is 10
-3Scope in; 2. satisfy the specific (special) requirements of dynamic test, carry out gap verifications such as gamut, thereby describe out the dynamic perfromance of belted electronic balance; 3. the verification operation is laborsaving saves time, easy to use, also not difficult even check-verifying period is very short, is applicable to the industry spot verification.Facts have proved that use the belt conveyer scale of this technology verification, error in dipping remains in the franchise of dispatching from the factory.Once cost about 50 yuan approximately with this law verification.Compare with real object method, one of every verification can be reduced expenses more than 200 yuan.About about 300 yuan of the cost of manufacture of checker (DJ-40-1200/800), compare with roller chain (price is 5000 a yuan/root) have only its 1/5～1/10.
Description of drawings: 1.-counterweight frame part.Counterweight is superimposed upon on this during verification, coincides with center of gravity and the roller center that guarantees counterweight.The different counterweight amount that superposes can form different charge capacity, goes out the relative error amount of different range points in order to verification.2.-fine setting adjusted device.The present invention adopts sight alignment to decline key to mechanism.Make calibration equipment on running belt, keep stable with spring tension, be not subjected to the influence of belt deviation, to reach the purpose of accurate verification.3.-flexible screw rod, this device adopts left and right sides spiral telescoping mechanism.Pitch is 1 millimeter.Rotating screw bolt can make two distances between the centre-point load change continuously.After distance was harmonized, available jam nut was tightened, and makes fixed distance constant.
Best mode for carrying out the invention is to combine with belted electronic balance manufacturer, sells in the lump as the calibration means that are equipped with, and the belted electronic balance measuring accuracy of selling is guaranteed, thereby makes a profit in competition.This checker also can be made by the professional enterprise of manufacture counterweight or gauging instrument weighing apparatus and sell, and is used voluntarily by the user, also can reach accurate measurement, saves the purpose of verification expense.
Present Manufactured DJ-40-1200/800 type superposing type checker is applicable to the flat pattern single-idler electronic belt conveyor scale: 400～800 millimeters of bandwidth; Belt speed 0.5～2 meter per second; 40～150 tons of ranges/time.Its technical specification is: conduct oneself with dignity 10 kilograms (being equivalent to two 5 kilograms of counterweights) quality precision ± 0.0005Kg; Stackable maximum counterweight amount is 40 kilograms; Several 4 of roller divides two groups; 800～1200 millimeters of centre distance are continuous adjustable.But the verification pitch is 800～1200 millimeters a flat pattern single-idler electronic belt conveyor scale.The superposing type checker of other specifications can be imitated by this method.
Claims (2)
1, a kind of checker that is used for the verification belted electronic balance, it is by the vehicle instrument and can locate the some counterweights that are superimposed upon on the vehicle instrument and constitute, the assembly that it is characterized in that described vehicle instrument includes: counterweight frame part, this counterweight chord position is in the two ends of vehicle instrument, can be on the position that coincides with the wheel center line during verification with the stationkeeping of counterweight, the fine setting adjusted device, this mechanism is that spring tension keeps sight alignment formula screw rod fine tuning structure, be positioned at below the counterweight frame, be used to guarantee that direction is stable when the vehicle instrument moves on belt, flexible screw rod, this screw rod is strict the remaining on the length of appointment of distance that makes between two counterweight framves, between two counterweight framves, be used to guarantee that instrument and counterweight are in the interval load of stablizing and being equivalent to a certain uniform load exactly that forms of the folded frame of belted electronic balance gage frame.
2, a kind of employing checker method of carrying out the belted electronic balance verification according to claim 1, described checker is made up of counterweight frame and counterweight, fine setting adjusted device, flexible screw rod, it is characterized in that the checking data that will record with described checker, obtain dynamic characteristic equation with the mathematical statistics method processing, with the meter characteristic of comprehensive description belted electronic balance, belted electronic balance is implemented gap multiple spot verifications such as gamut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102734 CN1011071B (en) | 1988-05-14 | 1988-05-14 | Calibration and calibrator of electronic belt balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102734 CN1011071B (en) | 1988-05-14 | 1988-05-14 | Calibration and calibrator of electronic belt balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033103A CN1033103A (en) | 1989-05-24 |
| CN1011071B true CN1011071B (en) | 1991-01-02 |
Family
ID=4832279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102734 Expired CN1011071B (en) | 1988-05-14 | 1988-05-14 | Calibration and calibrator of electronic belt balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011071B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954345B (en) * | 2014-04-15 | 2016-01-13 | 酒泉钢铁(集团)有限责任公司 | A kind of measuring belt scale ball code calibration steps |
| CN107271019B (en) * | 2017-07-21 | 2019-08-06 | 山东钢铁集团日照有限公司 | A kind of belt scale weight method of calibration of equivalent physical goods inspection |
-
1988
- 1988-05-14 CN CN 88102734 patent/CN1011071B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033103A (en) | 1989-05-24 |
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| CF01 | Termination of patent right due to non-payment of annual fee |