CN110702204B - Method for solving errors of electronic belt scale chain code calibration and physical calibration - Google Patents
Method for solving errors of electronic belt scale chain code calibration and physical calibration Download PDFInfo
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- CN110702204B CN110702204B CN201910995769.4A CN201910995769A CN110702204B CN 110702204 B CN110702204 B CN 110702204B CN 201910995769 A CN201910995769 A CN 201910995769A CN 110702204 B CN110702204 B CN 110702204B
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- carrier roller
- calibration
- weighing
- chain code
- belt scale
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
- G01G23/012—Testing or calibrating of weighing apparatus with load cells comprising in-build calibration weights
Abstract
The invention discloses a method for solving the problems of chain code calibration and object calibration errors of an electronic belt scale, which comprises the following steps: a. taking a belt section corresponding to a weighing carrier roller (3) of the belt scale and five transition carrier rollers (2) in front of and behind the weighing carrier roller (3) as the length for installation and adjustment; b. the mounting height of the weighing carrier roller (3) is equal to that of the transition carrier roller (2) and the frame carrier roller (1); c. six steel wires (4) are horizontally arranged on a rack carrier roller (1), a transition carrier roller (2) and a weighing carrier roller (3) along the direction of the belt scale; d. powering up the system, and adjusting the unbalance loading; e. and calibrating the chain codes, and calibrating the objects after the chain codes are qualified. The invention can avoid the problem of error in the prior electronic belt scale during chain code calibration and object calibration.
Description
Technical Field
The invention relates to the technical field of electronic belt scale chain code calibration methods, in particular to a method for solving errors of electronic belt scale chain code calibration and object calibration.
Background
At present, the electronic belt scale is installed in a manufacturer technical guidance mode at home and abroad, and the technical data of the electronic belt scale manufacturers at home and abroad adopts the technical scheme that a carrier roller of a weighing section (weighing length) of the electronic belt scale is 2mm to 10mm higher than a carrier roller of a belt rack. The calibration is mainly based on the field environment, a manufacturer configures one of a plurality of calibration modes according to the technical protocol grade, and more than 95 percent of calibration modes are configured with chain code calibration. And when the user checks the error of the scale, the user can check the accuracy of the chain code calibration by using the physical calibration. However, no matter which calibration method is adopted, the calibrated error of the method should meet the technical requirements of the corresponding level. The belt weighers are often mounted according to all the existing methods for mounting technical data at home and abroad, and after chain code calibration is used, and when any parameter of the calibration equipment is not changed, and then physical calibration is carried out, the deviation between the results of the physical calibration and the chain code calibration is large.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method for solving errors of chain code calibration and physical calibration of an electronic belt scale, which can solve the problem that the existing electronic belt scale has errors during the chain code calibration and the physical calibration.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a method for solving errors of chain code calibration and physical calibration of an electronic belt scale comprises the following steps:
a. taking a weighing carrier roller of the belt scale and a belt section corresponding to each of five transition carrier rollers in front of and behind the weighing carrier roller as the length for installation and adjustment;
b. the mounting height of the weighing carrier roller is equal to that of the transition carrier roller and the frame carrier roller;
c. six steel wires are horizontally arranged on the rack carrier roller, the transition carrier roller and the weighing carrier roller along the direction of the belt scale, the steel wires need to be straightened and tightened without loosening, and two steel wires on a horizontal roller shaft and two side roller shafts at two ends of the rack carrier roller, the transition carrier roller and the weighing carrier roller are ensured;
d. the system is electrified, unbalance loading adjustment is carried out, a plurality of weights of 20kg with the same mass are used for being respectively placed on scale frames at positions with the same distance between the two sides of the scale frame and a scale frame fulcrum or a center, internal code values or kg/m values output by weighing sensors for placing corresponding weights are checked through a secondary instrument, if the internal code values or the kg/m values output by the weighing sensors for placing the same weight are not consistent in display, compensation is carried out by adjusting potentiometers of sensors at corresponding positions of a compensation junction box until the two sides are adjusted to be consistent;
e. and calibrating the chain code, and after the chain code is qualified, calibrating the object on the basis of not changing any parameter, wherein the relative errors of the two calibration modes both accord with +/-1.0%.
The diameter of the steel wire is 0.5 mm.
In the step b, each carrier roller is adjusted on the same plane, and the consistency of the heights of other carrier rollers and the two carrier rollers is checked by using feelers below steel wires on the frame carrier rollers at two ends until the adjustment is consistent.
The invention has the beneficial effects that: the invention has the advantages that after theoretical analysis is carried out on the prior art, the tension is the most important factor influencing the metering accuracy of the electronic belt scale, although the belt is provided with the tensioning device, the tension of the belt is different due to different belt material amounts, and the change of the tension can be explained from the displacement change of the tensioning device. The whole belt is like a tensioning device, once the displacement of two ends is fixed, the influence of stress on the raised part of the whole belt is the largest, namely the bearing roller (weighing bearing roller) on the part of the belt frame where the belt is raised on the whole belt is the most obviously stressed, when the tension of the belt is changed, the tension at the position is changed, and the metering precision of the electronic belt scale is finally influenced, the weighing section (weighing length) bearing rollers of the electronic belt scale are all installed according to the prior art requirements and are 2mm to 10mm higher than the bearing rollers of the belt frame, the influence of the belt tension on the weighing section (weighing length) bearing rollers is the largest, and the main reason that the error between the chain code of the electronic belt scale and the material object calibration mode cannot meet the technical requirements is caused The mounting height of frame bearing roller is the same, secondly on frame bearing roller, excessive bearing roller and weighing the bearing roller, sets up six steel wires of flare-outing tight along belt weigher trend level, and the steel wire holds up the belt, just so can avoid because the difference of belt material volume for the tension of belt is different, and when belt tension's change, belt bulge's tension changes thereupon, influences the problem of electronic belt weigher's measurement accuracy.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
Now, an electronic belt scale with a double-lever four weighing carrier rollers, a full scale of 1500 t/h and an error of +/-1.0 percent is taken as an example for introduction:
a method for solving errors of chain code calibration and physical calibration of an electronic belt scale comprises the following steps:
a. taking four weighing carrier rollers 3 of the belt scale and belt sections corresponding to five transition carrier rollers 2 in front of and behind the weighing carrier rollers 3 as the length for installation and adjustment;
b. the mounting height of the weighing carrier roller 3 is equal to the mounting heights of the transition carrier roller 2 and the frame carrier roller 1;
c. six steel wires 4 with the diameter of 0.5mm are horizontally arranged on a rack carrier roller 1, an excessive carrier roller 2 and a weighing carrier roller 3 along the direction of a belt scale, the steel wires 4 must be straightened and tightened without loosening, and two steel wires 4 are respectively arranged on a horizontal roller shaft and two side roller shafts at two ends of the rack carrier roller 1, the excessive carrier roller 2 and the weighing carrier roller 3, wherein each carrier roller is adjusted on the same plane, and the consistency of the heights of other carrier rollers and the two carrier rollers is checked by using a clearance gauge below the steel wires 4 on the rack carrier rollers 1 at the two ends until the adjustment is consistent;
d. the system is electrified, unbalance loading adjustment is carried out, a plurality of weights of 20kg with the same mass are used for being respectively placed on scale frames at positions with the same distance between the two sides of the scale frame and a scale frame fulcrum or a center, internal code values or kg/m values output by weighing sensors for placing corresponding weights are checked through a secondary instrument, if the internal code values or the kg/m values output by the weighing sensors for placing the same weight are not consistent in display, compensation is carried out by adjusting potentiometers of sensors at corresponding positions of a compensation junction box until the two sides are adjusted to be consistent;
e. and calibrating the chain code, and after the chain code is qualified, calibrating the object on the basis of not changing any parameter, wherein the relative errors of the two calibration modes both accord with +/-1.0%.
Claims (3)
1. A method for solving errors of chain code calibration and physical calibration of an electronic belt scale is characterized by comprising the following steps:
a. taking a belt section corresponding to a weighing carrier roller (3) of the belt scale and five transition carrier rollers (2) in front of and behind the weighing carrier roller (3) as the length for installation and adjustment;
b. the mounting height of the weighing carrier roller (3) is equal to that of the transition carrier roller (2) and the frame carrier roller (1);
c. six steel wires (4) are horizontally arranged on a rack carrier roller (1), a transition carrier roller (2) and a weighing carrier roller (3) along the direction of a belt scale, the steel wires (4) must be straightened and tightened, and the phenomenon of looseness cannot occur, so that horizontal roller shafts of the rack carrier roller (1), the transition carrier roller (2) and the weighing carrier roller (3) and two steel wires (4) on side roller shafts at two ends are ensured;
d. the system is electrified, unbalance loading adjustment is carried out, a plurality of weights of 20kg with the same mass are used for being respectively placed on scale frames at positions with the same distance between the two sides of the scale frame and a scale frame fulcrum or a center, internal code values or kg/m values output by weighing sensors for placing corresponding weights are checked through a secondary instrument, if the internal code values or the kg/m values output by the weighing sensors for placing the same weight are not consistent in display, compensation is carried out by adjusting potentiometers of sensors at corresponding positions of a compensation junction box until the two sides are adjusted to be consistent;
e. and calibrating the chain code, and after the chain code is qualified, calibrating the object on the basis of not changing any parameter, wherein the relative errors of the two calibration modes both accord with +/-1.0%.
2. The method for solving the problem of errors in the chain code calibration and the physical calibration of the electronic belt scale according to claim 1, wherein the method comprises the following steps: the diameter of the steel wire (4) is 0.5 mm.
3. The method for solving the problem of errors in the chain code calibration and the physical calibration of the electronic belt scale according to claim 1, wherein the method comprises the following steps: in the step b, each carrier roller is adjusted on the same plane, and the consistency of the heights of other carrier rollers and the two carrier rollers is checked by using a feeler gauge below the steel wires (4) on the frame carrier rollers (1) at the two ends until the adjustment is consistent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995769.4A CN110702204B (en) | 2019-10-18 | 2019-10-18 | Method for solving errors of electronic belt scale chain code calibration and physical calibration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910995769.4A CN110702204B (en) | 2019-10-18 | 2019-10-18 | Method for solving errors of electronic belt scale chain code calibration and physical calibration |
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| CN110702204A CN110702204A (en) | 2020-01-17 |
| CN110702204B true CN110702204B (en) | 2021-06-08 |
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Citations (7)
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| CN2041424U (en) * | 1988-12-05 | 1989-07-19 | 北京工商咨询服务公司 | Weighting apparatus capable of regulating offset load accuracy automatically |
| CN2921797Y (en) * | 2006-04-26 | 2007-07-11 | 重庆自成电子衡器有限公司 | Junction box for regulating weighing device unbalance loading error during multisensor paralleling |
| CN201335723Y (en) * | 2008-12-10 | 2009-10-28 | 孙凯 | Load sensor and belt balance |
| JP2009250654A (en) * | 2008-04-02 | 2009-10-29 | Ihi Corp | Conveyance object amount measuring device |
| CN203551094U (en) * | 2013-11-26 | 2014-04-16 | 金陵科技学院 | Static electronic automobile scale sensor unbalance loading error regulator |
| CN103922074A (en) * | 2014-04-30 | 2014-07-16 | 广西南宁市共展非衡电子科技有限公司 | Electronic belt scale conveyor |
| CN203824626U (en) * | 2014-05-15 | 2014-09-10 | 方大特钢科技股份有限公司 | Roller-way scale sensor bearing box girder structure device |
-
2019
- 2019-10-18 CN CN201910995769.4A patent/CN110702204B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041424U (en) * | 1988-12-05 | 1989-07-19 | 北京工商咨询服务公司 | Weighting apparatus capable of regulating offset load accuracy automatically |
| CN2921797Y (en) * | 2006-04-26 | 2007-07-11 | 重庆自成电子衡器有限公司 | Junction box for regulating weighing device unbalance loading error during multisensor paralleling |
| JP2009250654A (en) * | 2008-04-02 | 2009-10-29 | Ihi Corp | Conveyance object amount measuring device |
| CN201335723Y (en) * | 2008-12-10 | 2009-10-28 | 孙凯 | Load sensor and belt balance |
| CN203551094U (en) * | 2013-11-26 | 2014-04-16 | 金陵科技学院 | Static electronic automobile scale sensor unbalance loading error regulator |
| CN103922074A (en) * | 2014-04-30 | 2014-07-16 | 广西南宁市共展非衡电子科技有限公司 | Electronic belt scale conveyor |
| CN203824626U (en) * | 2014-05-15 | 2014-09-10 | 方大特钢科技股份有限公司 | Roller-way scale sensor bearing box girder structure device |
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| 皮带秤的实物校准与检定;叶庆泰;《检验测试》;20081231;全文 * |
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