CN1033103A - Belted electronic balance method of calibration and checker - Google Patents
Belted electronic balance method of calibration and checker Download PDFInfo
- Publication number
- CN1033103A CN1033103A CN 88102734 CN88102734A CN1033103A CN 1033103 A CN1033103 A CN 1033103A CN 88102734 CN88102734 CN 88102734 CN 88102734 A CN88102734 A CN 88102734A CN 1033103 A CN1033103 A CN 1033103A
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- China
- Prior art keywords
- electronic balance
- belted electronic
- calibration
- checker
- verification
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Abstract
A kind of method of calibration of belted electronic balance.It can replace real object method that the belted electronic balance of industry spot is implemented gap multiple spot verifications such as gamut, and derives the dynamic characteristic equation that characterizes measuring accuracy, describes its metering situation.This method meets the requirement of transmission of quantity value standard, can improve checking precision, and saves human and material resources that verification consumes and time.
The isolated plant that designs for enforcement this method is called the stack checker.It is a kind of vehicle standard, and its quality meets the technical requirement of fourth class 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 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, and 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.
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.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 distributed load that object simulating forms 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, be not subjected to when making operation belt vibration and sideslip do around, 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 mathematical formulae has been described the dynamic measurement characteristic of on-the-spot belted electronic balance more perfectly than static relative error expression formula.Thereby judge 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
-8Scope 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 ,-the 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 ,-and 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 ± 0.0005%; 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 method of calibration of belted electronic balance, it is characterized in that technical weights is added on the running belt, form the centre-point load of variable massization, the effect of simulation distribution material, finish the gap multiple spot verifications such as gamut of belt conveyer scale, to replace heavy physical goods inspection or other check addition.
2, a kind of claim 1 that is exclusively used in, the checker of described method of calibration is characterized in that having the fine setting device for regulating direction from the performance that weighs, the vehicle instrument of flexible screw rod and location stack counterweight.
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 true CN1033103A (en) | 1989-05-24 |
| CN1011071B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954345A (en) * | 2014-04-15 | 2014-07-30 | 酒泉钢铁(集团)有限责任公司 | Spherical-weight calibration method of metering belt weigher |
| CN107271019A (en) * | 2017-07-21 | 2017-10-20 | 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
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954345A (en) * | 2014-04-15 | 2014-07-30 | 酒泉钢铁(集团)有限责任公司 | Spherical-weight calibration method of metering belt weigher |
| 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 |
| CN107271019A (en) * | 2017-07-21 | 2017-10-20 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1011071B (en) | 1991-01-02 |
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