CN114923549A - Method for adjusting conveyer belt of belt scale - Google Patents
Method for adjusting conveyer belt of belt scale Download PDFInfo
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- CN114923549A CN114923549A CN202210635602.9A CN202210635602A CN114923549A CN 114923549 A CN114923549 A CN 114923549A CN 202210635602 A CN202210635602 A CN 202210635602A CN 114923549 A CN114923549 A CN 114923549A
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000005303 weighing Methods 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000012417 linear regression Methods 0.000 claims description 3
- 238000007619 statistical method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
- G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
- G01G11/12—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge by controlling the speed of the belt
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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
Abstract
The invention discloses a method for adjusting a conveying belt of a belt scale, which comprises the following steps: primarily adjusting the tensioning degree of the conveying belt; running an idle running working condition under the condition that the conveying belt is in a middle position, and finely adjusting the tensioning degree of the conveying belt in the idle running process; adjusting the mechanical position of the measuring rod by testing the tare weight of the conveying belt under different tensities; measuring the length of the conveying belt and calculating the speed of the conveying belt; and testing the measurement error of the belt weigher. According to the adjusting method of the conveyer belt of the belt scale, the equipment can be calibrated and verified in a flow-by-flow manner through a quantitative calibration method, 50% of time is saved compared with the method that the equipment is operated by only depending on experience, and the problems of reworking, long time consumption and the like caused by the conventional dependence on experience calibration are solved; the belt weigher has the advantages that the standardization step can be formed, the calibration efficiency is improved, the rework times are reduced, and the high precision of the measured data of the belt weigher is kept.
Description
Technical Field
The invention relates to the technical field of machinery application, in particular to a method for adjusting a conveying belt of a belt scale.
Background
In the industrial age, the conveyer belt of the belt weigher can be applied to the full-class automatic production and transportation, the belt conveyer belts on the market have a plurality of types, and different types of conveyer belts of the belt weigher can be seen in many places. For example, in the industries of food industry, agriculture, manufacturing industry and the like, the belt scale conveyor belt is widely applied, mainly because the belt scale conveyor belt is used for weighing in a motion state and does not need to be stopped, so that the output rate of the produced energy is improved. In recent decades, China also accumulates a lot of precious experiences on the aspect of belt weighers.
In the practical application process, in the aspect of the adjusting method of the conveying belt, experience is still much, so in the adjusting process, the conveying belt needs to be calibrated after being adjusted every time, once the data deviation is large in the calibrating process, hardware mechanical problems such as the fact that the conveying belt is not adjusted in place are suspected, the time spent on troubleshooting is not fixed, the rework condition is more, the time spent is longer, and the like.
Therefore, a method for adjusting the conveying belt of the belt scale is needed.
Disclosure of Invention
The invention aims to provide a method for adjusting a conveying belt of a belt scale, which solves the problems in the prior art and can calibrate the conveying belt of the belt scale in a standardized and efficient manner.
The invention provides a method for adjusting a conveying belt of a belt scale, which comprises the following steps:
primarily adjusting the tensioning degree of the conveying belt;
running an idle running working condition under the condition that the conveying belt is in a middle position, and finely adjusting the tensioning degree of the conveying belt in the idle running process;
adjusting the mechanical position of the measuring rod by testing the tare weight of the conveying belt under different tensities;
measuring the length of the conveying belt and calculating the speed of the conveying belt;
and testing the measurement error of the belt weigher.
The method for adjusting the conveyor belt of the belt scale as described above, preferably, the initially adjusting the tension degree of the conveyor belt specifically includes:
adjusting the tensioning nut to enable the conveying belt to be in a horizontal state on the rack;
the tensioning nut is adjusted to stretch the conveyor belt and mark the left and right width of the main drive rod.
The method for adjusting the conveyer belt of the belt scale as described above, wherein preferably, in the step of stretching the conveyer belt, the conveyer belt is pulled up by a tension nut by 1.5mm to 2.5 mm.
The method for adjusting the conveyer belt of the belt scale as described above, wherein preferably, the running of the conveyer belt in the neutral position is performed under an idle running condition, and the fine adjustment of the tension degree of the conveyer belt in the idle running process includes:
under the condition that the conveying belt is centered, starting an operation idle running working condition;
observing whether the conveying belt slips and/or deviates or not in the running idle running working condition process;
if the conveyer belt has the condition of skidding or off tracking, then through adjusting manual tuningout mechanism and/or elasticity nut, correct the skidding or off tracking condition of conveyer belt to make the conveyer belt can steady and operation placed in the middle.
The method for adjusting the conveyer belt of the belt scale as described above, wherein preferably, the moving speed of the conveyer belt under the idle running condition is 40% -60% of the moving speed of the conveyer belt under the full speed condition, and the running time of the idle running condition is 4min-6 min.
The method for adjusting the conveyor belt of the belt scale as described above, wherein preferably, the adjusting the mechanical position of the weighing rod by testing the tare weight of the conveyor belt under different tensities includes:
step S31, under the condition that the conveying belt is stopped, loosening the tensioning nut for half a turn, starting the conveying belt, and measuring the tare weight of the conveying belt to obtain a first tare weight value a;
step S32, under the condition that the conveying belt is stopped, tightening the tensioning nut for a circle, starting the conveying belt, and measuring the tare weight of the conveying belt to obtain a second tare weight value b;
step S33, calculating the absolute value | a-b | of the difference between the first tare value a and the second tare value b, and returning the tensioning nut to the original position;
step S34, if the absolute value of the difference is within the preset error range, the mechanical position of the weighing rod is adjusted;
and step S35, if the absolute value of the difference exceeds the preset error range, adjusting the weighing rod upwards or downwards according to the first tare value a and the second tare value b, and returning to the steps S31-S33 until the absolute value of the difference is within the preset error range.
The method for adjusting the conveyor belt of the belt scale as described above, wherein preferably, the measuring the length of the conveyor belt and calculating the speed of the conveyor belt specifically include:
measuring the length of one circle of the conveying belt to obtain the length of the conveying belt;
the speed of the conveyor belt at full speed is calculated based on at least the length of the conveyor belt.
The method for adjusting the conveying belt of the belt scale as described above, wherein preferably, the calculating the speed of the conveying belt under the full-speed working condition at least according to the length of the conveying belt specifically includes:
under the half-speed working condition, the conveying belt conveys the same conveying object from one side of the conveying belt to the other side of the conveying belt twice, and timing is carried out to obtain first time and second time respectively;
calculating an average time from the first time and the second time by:
average time ═ (time 1+ time 2)/2 (1);
calculating the speed of the conveyer belt under the full-speed working condition according to the length of the conveyer belt and the average time by the following formula:
the conveyor speed (100%) is 2 × conveyor length/average time (2).
The method for adjusting the conveyor belt of the belt scale as described above, wherein preferably, the step of testing the measurement error of the belt scale specifically includes:
running an empty running condition;
removing the peel weight;
carrying out initial measurement on the flexible material;
calibrating the belt weigher by using a real object;
verifying the belt weigher by using a real object;
and calculating the measurement error of the belt scale.
The method for adjusting the conveyor belt of the belt scale as described above, preferably, further comprises:
carry out statistical analysis to the running data before and after the belt weigher conveyer belt adjustment, specifically include:
counting absolute values of the difference values of the tare weights before and after the adjustment of the conveyer belt of the belt scale, carrying out discrete data analysis on the absolute values of the difference values of the tare weights before and after the adjustment, and drawing a mean value curve graph of the absolute values of the difference values of the tare weights before and after the adjustment;
using formula M Accuracy of doping (％)＝M (doped-undoped) /M Is not doped Obtaining doping precision and obtaining precision dispersion distribution diagram, wherein M Accuracy of doping Denotes the doping precision, M Doped-undoped Represents the difference between the doped and undoped masses, M Is not doped Represents the undoped mass;
and drawing a distribution straight line of the doping precision by using a linear regression least square method.
And carrying out data check on the mean value curve graph of the absolute values of the tare weight difference values before and after adjustment and the distribution straight line of the doping precision according to the preset requirement.
The invention provides a method for adjusting a conveying belt of a belt scale, which mainly comprises the following five operation steps: primarily adjusting the tensioning degree of the conveyer belt, idle running the conveyer belt in the middle, adjusting the mechanical position of a weighing rod, checking the length and the speed of the conveyer belt and testing scale errors; according to the invention, through a quantitative calibration method, the equipment can be calibrated and verified in a flow manner, 50% of time is saved compared with the operation only by experience, and the problems of rework, long time consumption and the like caused by the conventional calibration depending on experience are avoided; the belt weigher has the advantages that the standardization step can be formed, the calibration efficiency is improved, the rework times are reduced, and the high precision of the measured data of the belt weigher is kept.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of an embodiment of a method for adjusting a conveyor belt of a belt scale according to the present invention;
FIG. 2 is a logic diagram of an embodiment of a method for adjusting a conveyor belt of a belt scale according to the present invention;
fig. 3 is a schematic diagram of the trend of the difference value of the tare weight of the thin silk scale and the stem silk scale.
FIG. 4 is a schematic diagram showing the blending accuracy of the X-ray thin silk balance and the bulked silk balance of the present invention.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
"first", "second" used in the present disclosure: and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific component is described as being positioned between a first component and a second component, there may or may not be an intervening component between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a method for adjusting a conveyor belt of a belt scale, which in an actual implementation process specifically includes the following steps:
and step S1, primarily adjusting the tensioning degree of the conveying belt.
In an embodiment of the method for adjusting a conveyor belt of a belt scale according to the present invention, the step S1 may specifically include:
and step S11, adjusting the tensioning nut to enable the conveying belt to be in a horizontal state on the rack.
And step S12, adjusting the tensioning nut to stretch the conveying belt and mark the left and right width of the main transmission stick.
Specifically, in the step of stretching the conveyor belt, the conveyor belt is pulled up by the tension nut by 1.5mm to 2.5mm, for example, 2.0 mm. The present invention is not limited to the stretching height of the conveyor belt.
The conveyer belt is loosely laid on the weighing frame, and is mounted on the frame through the tensioning nut, so that the horizontal state is adjusted, the conveyer belt is prevented from deviating during operation, and the conveyer belt is pulled up by 2mm through the tensioning nut to a certain degree of tensioning, and the left and right width of the main transmission roller is marked.
And step S2, operating the idle running working condition under the condition that the conveying belt is in the central position, and finely adjusting the tensioning degree of the conveying belt in the idle running process.
In an embodiment of the method for adjusting a conveyor belt of a belt scale according to the present invention, the step S2 may specifically include:
and step S21, under the condition that the conveying belt is centered, starting running the idle running working condition.
And step S22, in the process of running the idle running working condition, observing whether the conveying belt has the condition of skidding and/or deviation.
Wherein, the moving speed of the conveyer belt is 40% -60%, for example 50%, of the moving speed of the conveyer belt under the full speed condition under the idle running condition, and the running time of the idle running condition is 4min-6min, for example 5 min. It should be noted that the speed and the idle running time of the conveyor belt under the idle running condition are not particularly limited.
And step S23, if the conveyer belt slips or deviates, correcting the slipping or deviating condition of the conveyer belt by adjusting the manual deviation adjusting mechanism and/or the elastic nut so that the conveyer belt can stably and centrally run.
Step S2 is based on step S1, start running idle running, observe whether the conveyer belt has slipping, the situation of off tracking, adjust manual deviation adjustment mechanism and elasticity nut in time as required, when the conveyer belt can be steady, the operation centrally, show that the tensioning step of conveyer belt has been accomplished.
And step S3, adjusting the mechanical position of the measuring rod by testing the tare weight of the conveying belt under different tensities.
In an embodiment of the method for adjusting a conveyor belt of a belt scale according to the present invention, the step S3 may specifically include:
and step S31, under the condition that the conveyor belt is stopped, loosening the tensioning nut for half a turn, starting the conveyor belt, and measuring the tare weight of the conveyor belt to obtain a first tare weight value a.
And step S32, under the condition that the conveyor belt is stopped, tightening the tensioning nut for one circle, starting the conveyor belt, and measuring the tare weight of the conveyor belt to obtain a second tare weight value b.
And step S33, calculating the absolute value | a-b | of the difference between the first tare value a and the second tare value b, and returning the tensioning nut to the original position.
And step 34, if the absolute value of the difference is within a preset error range (for example, | a-b | ≦ 10), the mechanical position adjustment of the weighing rod is completed.
It should be noted that the preset error range is not specifically limited in the present invention.
And step S35, if the absolute value of the difference exceeds the preset error range, adjusting the weighing rod upwards or downwards according to the first tare value a and the second tare value b, and returning to the steps S31-S33 until the absolute value of the difference is within the preset error range.
Specifically, if the first tare value a < the second tare value b, the weigh bar is adjusted downward; conversely, if the first tare value a > the second tare value b, the weighing bar is adjusted upward.
And step S4, measuring the length of the conveying belt and calculating the speed of the conveying belt.
After the completion of the steps S1 to S3, the measurement of the conveyor belt length is confirmed, and the conveyor belt speed is tested. In an embodiment of the method for adjusting a conveyor belt of a belt scale according to the present invention, the step S4 may specifically include:
and step S41, measuring the length of one circle of the conveying belt to obtain the length of the conveying belt.
And step S42, calculating the speed of the conveyor belt under the full-speed working condition according to at least the length of the conveyor belt.
In an embodiment of the method for adjusting a conveyor belt of a belt scale of the present invention, the step S42 may specifically include:
and step S421, under the half-speed working condition, the conveyer belt conveys the same conveying object from one side of the conveyer belt to the other side of the conveyer belt twice in sequence, and timing is carried out to obtain first time and second time respectively.
Step S422, calculating an average time according to the first time and the second time by using the following formula:
average time (time 1+ time 2)/2 (1);
step S423, calculating the speed of the conveyor belt under the full speed condition according to the length of the conveyor belt and the average time by the following formula:
conveyor speed (100%) -2 × conveyor length/average time (2).
Wherein the conveyor belt speed (100%) represents the conveyor belt speed at full speed.
And step S5, testing the measurement error of the belt scale.
And on the basis of finishing the adjustment of the conveying belt, carrying out error calibration test on the belt scale. In an embodiment of the method for adjusting a conveyor belt of a belt scale according to the present invention, the step S5 may specifically include:
and step S51, running the idle running condition.
And step S52, removing the weight.
And step S53, carrying out initial measurement on the flexible material.
And step S54, calibrating the belt scale by using the real object.
And step S55, verifying the belt weigher by using real objects.
And step S56, calculating the measurement error of the belt scale.
It should be noted that, steps S1-S5 of the present invention are performed in sequence, and if a problem occurs in one of the steps, the next operation cannot be performed, and the error data needs to be corrected to perform the next step.
Further, in some embodiments of the present invention, the method for adjusting the conveying belt of the belt scale further includes:
and step S6, performing statistical analysis on the operation data before and after the adjustment of the conveyer belt of the belt scale.
In an embodiment of the method for adjusting a conveyor belt of a belt scale of the present invention, the step S6 may specifically include:
and S61, counting absolute values of the difference values of the tare weights before and after the adjustment of the conveyer belt of the belt scale, performing discrete data analysis on the absolute values of the difference values of the tare weights before and after the adjustment, and drawing a mean value curve graph of the absolute values of the tare weights before and after the adjustment.
In step S61, belt actual verification data may be obtained, an actual data statistical chart may be obtained, and the volatility of the data (such as the range and variance of the data) may be analyzed, so that the stability (i.e., the relative error value) of the obtained data may be verified, and the trend of the data may be analyzed.
In an embodiment of the invention, after the conveying belt is adjusted by the adjusting method of the invention, the skin weight difference condition of 2 belt weighers for blending the cut tobacco with the X-ray is tracked, and the skin weight difference trend of the thin cut tobacco weigher and the cut stem weigher is shown in fig. 3. As can be seen from FIG. 3, the fluctuation of the tare difference basically conforms to the linear relationship, which indicates that the method for adjusting the conveyer belt of the belt scale has practical operation significance.
Step S62, using formula M Accuracy of doping (％)＝M (doped-undoped) /M Is not doped Obtaining doping precision and obtaining precision dispersion distribution diagram, wherein M Accuracy of doping Denotes the doping precision, M Doped-undoped Represents the difference between the masses of doped and undoped, M Is not doped Indicating the undoped mass.
And step S63, drawing a distribution straight line of the doping precision by using a linear regression least square method.
And step S64, performing data check on the mean value curve graph of the absolute values of the tare difference values before and after adjustment and the distribution straight line of the doping precision according to the preset requirement.
After the adjusting method is adopted to adjust the conveying belt, the conditions of the silk swelling doping precision and the thin silk doping precision of the silk making and blending X-ray 2-station belt weighers are tracked. Data on the precision of the bulked wire doping and the precision of the thin wire doping, as shown in fig. 4, the following data can be obtained from fig. 4: the doping precision of the x-ray expanded filament is less than or equal to +/-0.3 percent, the doping precision of the x-ray thin filament is less than or equal to +/-0.3 percent, and the long-term precision requirement of the belt weigher is as follows: less than or equal to +/-0.5 percent, so that both the doping precision of the x-ray expanded wire and the doping precision of the x-ray thin wire meet the requirements. The detection precision requirement of the adjusting method of the invention reaches the standard, namely the relative error of the calibration measurement of the belt scale is less than or equal to | 0.3% |. Therefore, the adjustment method of the invention has high stability and meets the actual production requirement.
The method for adjusting the conveyer belt of the belt scale provided by the embodiment of the invention mainly comprises the following five operation steps: primarily adjusting the tensioning degree of the conveyer belt, idle running the conveyer belt in the middle, adjusting the mechanical position of a weighing rod, checking the length and the speed of the conveyer belt and testing scale errors; according to the invention, through a quantitative calibration method, the equipment can be calibrated and verified in a flow manner, 50% of time is saved compared with the operation only by experience, and the problems of rework, long time consumption and the like caused by the conventional calibration depending on experience are avoided; the belt weigher has the advantages that the standardization step can be formed, the calibration efficiency is improved, the rework times are reduced, and the high precision of the measured data of the belt weigher is kept.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A method for adjusting a conveying belt of a belt scale is characterized by comprising the following steps:
primarily adjusting the tensioning degree of the conveying belt;
running an idle running working condition under the condition that the conveying belt is in a central position, and finely adjusting the tensioning degree of the conveying belt in the idle running process;
adjusting the mechanical position of the weighing rod by testing the tare weight of the conveying belt under different tensities;
measuring the length of the conveying belt and calculating the speed of the conveying belt;
and testing the measurement error of the belt weigher.
2. The method of adjusting a belt of a belt scale of claim 1, wherein the initial adjustment of the tension of the belt comprises:
adjusting the tensioning nut to enable the conveying belt to be in a horizontal state on the rack;
the tensioning nut is adjusted to stretch the conveyor belt and mark the left and right width of the main drive roller.
3. The method of claim 2, wherein the step of stretching the belt is performed by pulling the belt up by a tension nut of 1.5mm to 2.5 mm.
4. The method for adjusting the conveyor belt of the belt scale according to claim 1, wherein the idle running condition is performed when the conveyor belt is in the center position, and the tension of the conveyor belt is finely adjusted during the idle running process, specifically comprising:
starting an operation idle running working condition under the condition that the conveying belt is centered;
in the process of running the idle running working condition, observing whether the conveying belt has the condition of skidding and/or deviation;
if the conveyer belt has the condition of skidding or off tracking, then through adjusting manual tuningout mechanism and/or elasticity nut, correct the skidding or off tracking condition of conveyer belt to make the conveyer belt can steady and operation placed in the middle.
5. The method of claim 4, wherein the belt speed is 40-60% of the full speed of the belt during idle running, and the running time of the idle running is 4-6 min.
6. The method for adjusting the belt of a belt scale according to claim 1, wherein the mechanical position of the weighing bar is adjusted by measuring the tare weight of the belt under different tension levels, and the method specifically comprises:
step S31, under the condition that the conveying belt is stopped, loosening the tensioning nut for half a turn, starting the conveying belt, and measuring the tare weight of the conveying belt to obtain a first tare weight value a;
step S32, under the condition that the conveyer belt is stopped, tightening the tensioning nut for a circle, starting the conveyer belt, and measuring the tare weight of the conveyer belt to obtain a second tare weight value b;
step S33, calculating the absolute value | a-b | of the difference between the first tare value a and the second tare value b, and returning the tensioning nut to the original position;
step S34, if the absolute value of the difference is within the preset error range, the mechanical position adjustment of the weighing rod is completed;
and step S35, if the absolute value of the difference exceeds the preset error range, adjusting the weighing rod upwards or downwards according to the first tare value a and the second tare value b, and returning to the steps S31-S33 until the absolute value of the difference is within the preset error range.
7. The method of claim 1, wherein measuring the length of the belt and calculating the speed of the belt comprises:
measuring the length of one circle of the conveying belt to obtain the length of the conveying belt;
and calculating the speed of the conveying belt under the full-speed working condition at least according to the length of the conveying belt.
8. The method of claim 7, wherein calculating the speed of the conveyor belt at full speed based at least on the length of the conveyor belt comprises:
under the half-speed working condition, the conveying belt conveys the same conveying object from one side of the conveying belt to the other side of the conveying belt twice, and timing is carried out to obtain first time and second time respectively;
calculating an average time from the first time and the second time by:
average time ═ (time 1+ time 2)/2 (1);
calculating the speed of the conveyer belt under the full-speed working condition according to the length of the conveyer belt and the average time by the following formula:
conveyor speed (100%) -2 × conveyor length/average time (2).
9. The method for adjusting the conveyor belt of the belt scale according to claim 1, wherein the step of testing the measurement error of the belt scale specifically comprises:
running an empty running condition;
removing the peel weight;
carrying out initial measurement on the flexible material;
calibrating the belt weigher by using a real object;
verifying the belt weigher by using a real object;
and calculating the measurement error of the belt scale.
10. The method of adjusting a conveyor belt of a belt scale of claim 1, further comprising:
carry out statistical analysis to the running data before and after the belt weigher conveyer belt adjustment, specifically include:
counting absolute values of the difference in the tare weights of the conveyer belt of the belt scale before and after adjustment, performing discrete data analysis on the absolute values of the difference in the tare weights before and after adjustment, and drawing a mean value curve graph of the absolute values of the difference in the tare weights before and after adjustment;
using formula M Doping precision (％)＝M (doped-undoped) /M Is not doped Obtaining doping precision and obtaining precision dispersion distribution diagram, wherein M Accuracy of doping Denotes the doping precision, M Doped-undoped Represents the difference between the doped and undoped masses, M Is not doped Represents the undoped mass;
and drawing a distribution straight line of the doping precision by using a linear regression least square method.
And carrying out data check on the mean value curve graph of the absolute values of the tare weight difference values before and after adjustment and the distribution straight line of the doping precision according to the preset requirement.
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| CN202210635602.9A CN114923549A (en) | 2022-06-06 | 2022-06-06 | Method for adjusting conveyer belt of belt scale |
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| CN202210635602.9A CN114923549A (en) | 2022-06-06 | 2022-06-06 | Method for adjusting conveyer belt of belt scale |
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| CN202210635602.9A Pending CN114923549A (en) | 2022-06-06 | 2022-06-06 | Method for adjusting conveyer belt of belt scale |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359813A (en) * | 2011-08-15 | 2012-02-22 | 孙冉 | Calibrating method of weighing sensor of belt scale |
| CN102494753A (en) * | 2011-11-25 | 2012-06-13 | 云南建水锰矿有限责任公司 | Method for calibrating electronic belt scale |
| CN105241537A (en) * | 2015-09-17 | 2016-01-13 | 赛摩电气股份有限公司 | Device and method for adjusting weighing precision stability of electronic belt scale |
| CN212693033U (en) * | 2020-08-01 | 2021-03-12 | 青岛隆力达电子技术有限公司 | Belt scale with digital sensor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359813A (en) * | 2011-08-15 | 2012-02-22 | 孙冉 | Calibrating method of weighing sensor of belt scale |
| CN102494753A (en) * | 2011-11-25 | 2012-06-13 | 云南建水锰矿有限责任公司 | Method for calibrating electronic belt scale |
| CN105241537A (en) * | 2015-09-17 | 2016-01-13 | 赛摩电气股份有限公司 | Device and method for adjusting weighing precision stability of electronic belt scale |
| CN212693033U (en) * | 2020-08-01 | 2021-03-12 | 青岛隆力达电子技术有限公司 | Belt scale with digital sensor |
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