CN216349072U - Large-tonnage weight-free calibration system of discontinuous accumulation weighing apparatus - Google Patents
Large-tonnage weight-free calibration system of discontinuous accumulation weighing apparatus Download PDFInfo
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- CN216349072U CN216349072U CN202122739044.4U CN202122739044U CN216349072U CN 216349072 U CN216349072 U CN 216349072U CN 202122739044 U CN202122739044 U CN 202122739044U CN 216349072 U CN216349072 U CN 216349072U
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Abstract
The utility model discloses a large-tonnage weightless calibration system of a discontinuous accumulation weighing apparatus, which comprises an electromagnetic power meter, a weighing lever, a lever support and a constant current source, wherein the electromagnetic power meter is fixed on a platform, the lever support supports the weighing lever at the lower end of the weighing lever along the axial direction, an angle measuring device is arranged on the upper end surface of the weighing lever and is used for measuring the deflection angle of the weighing lever by taking the lever support as a supporting point, one end of the weighing lever is rotatably connected and fixed with a tension column of the electromagnetic power meter through a first shaft pin, the other end of the weighing lever is rotatably connected and fixed with a connecting column arranged on a calibrated weighing hopper through a second shaft pin, and the constant current source is connected with the electromagnetic power meter. The utility model realizes that the loading station mass can be calibrated without weights, improves the loading station mass calibration efficiency and avoids calibrating weighing weights by remote transportation; the quality calibration precision of the loading station is improved.
Description
Technical Field
The utility model relates to a large-tonnage weight-free calibration system of a discontinuous accumulative weighing apparatus.
Background
The loading station generally needs to regularly adopt 1000 Kg's large-scale weight to carry out the quality and calibrate, and the weight generally stores at the fixed point, when the loading station needs to calibrate, need to transport large-scale weight to the scene, general transport distance is relatively far away, it is consuming time many, and the weight is in the storage process, because receive reasons such as humidity for a long time, the quality of weight has certain loss, this has also caused the loading station quality and has markd the in-process and cause certain error, because above-mentioned problem has not obtained fine solution always, consequently, loading station quality calibration has always puzzled the enterprise for a long time.
Disclosure of Invention
The utility model aims to provide a large-tonnage weight-free calibration system of a discontinuous accumulation weighing apparatus, which is used for calibrating an electromagnetic power meter based on a Planck constant.
In order to achieve the purpose, the scheme of the utility model is as follows:
a large-tonnage weightless calibration system of a discontinuous accumulative weighing machine comprises an electromagnetic power meter, a weighing lever, a lever pillar and a constant current source, wherein the electromagnetic power meter is fixed on a platform, the lever pillar supports the weighing lever at the lower end of the weighing lever along the axial direction, an angle measuring device is arranged on the upper end surface of the weighing lever and used for measuring the deflection angle of the weighing lever by taking the lever pillar as a supporting point, one end of the weighing lever is rotatably connected and fixed with a tension column of the electromagnetic power meter through a first shaft pin, the other end of the weighing lever is rotatably connected and fixed with a connecting column arranged on a calibrated weighing hopper through a second shaft pin, and the constant current source is connected with the electromagnetic power meter; wherein: the electromagnetic power meter is formed by calibration, and has a fixed relation between standard magnetic tension and input current value, and the lever support is provided with a first lifting adjusting mechanism for horizontal correction of the weighing lever.
The scheme is further as follows: and the tension column of the electromagnetic dynamometer is provided with a second lifting adjusting mechanism, and the first lifting adjusting mechanism and the second lifting adjusting mechanism are jointly used for horizontal correction of the weighing lever.
The scheme is further as follows: the weighing device comprises a weighing lever, a lever support and a moment balance formula, wherein the weighing lever is axially provided with a long sliding groove, the lever support is arranged in the sliding groove in a sliding mode, the sliding device is used for changing a supporting point of the lever support on the weighing lever, and the calibration weighing is changed by changing the supporting point according to the moment balance formula.
The scheme is further as follows: the standard magnetic tension is multiple, the multiple standard magnetic tensions and the multiple input current values are in a fixed relation, different input current values are changed, different standard magnetic tensions are changed, and the calibration weighing is changed by changing different standard magnetic tensions formed by different input current values according to a moment balance formula.
The scheme is further as follows: the first lifting adjusting mechanism comprises a lever support base, a vertical hole is formed in the lever support base, a first rotatable adjusting nut is sleeved on the upper end of the vertical hole through a limiting notch, the lever support is screwed into the first adjusting nut through threads, and the first adjusting nut is rotated to control the lifting of the lever support.
The scheme is further as follows: the second lifting adjusting mechanism comprises an adjusting base fixedly connected with the tension column of the electromagnetic power meter and a tension column extension rod, one end of the tension column extension rod is connected with one end of a weighing lever, a vertical through hole is formed in the adjusting base, a rotatable second adjusting nut is sleeved on the vertical through hole through a limiting notch, the tension column extension rod is screwed into the second adjusting nut through threads, and the second adjusting nut is rotated to control lifting of the tension column extension rod.
Compared with the prior art, the utility model has the advantages that: the calibration of the mass of the loading station can be realized without weights, the calibration efficiency of the mass of the loading station is improved, and the calibration of the weighing weights in remote transportation is avoided; the standard equipment can be fixedly connected with the weighing hopper and can be calibrated at any time, so that the mass calibration precision of the loading station is improved, and uncertain errors caused by mass calibration due to weight abrasion and corrosion can be avoided; the on-line mass calibration and the mass correction of the weighing system of the loading station are realized, the weight is not required to be replaced when the vehicle is stopped during mass calibration, the loading mass calibration efficiency is improved, calibration data can be analyzed and stored on line for a long time, historical data are counted, fault diagnosis and analysis are carried out on a calibration instrument, actual data in the calibration process at each time are recorded, the calibration process is compared with the process of weight calibration, and the calibration process is more transparent and can be traced. The automation and the intellectualization of the quality calibration of the loading station are realized.
The utility model is described in detail below with reference to the figures and examples.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic structural view of a first lift adjustment mechanism of the present invention, and an enlarged view of a portion A of FIG. 1;
fig. 3 is a schematic structural view of a second elevation adjustment mechanism of the present invention, and an enlarged view of a portion B of fig. 1.
Detailed Description
A large-tonnage weightless calibration system of a discontinuous accumulative weighing apparatus is disclosed, as shown in figure 1, figure 2 and figure 3, the system comprises an electromagnetic power meter 1, a weighing lever 2, a lever support 3, a constant current source 4 and a controller 5, wherein the electromagnetic power meter 1 and the lever support 3 are fixed on a platform 6, the lever support 3 supports the weighing lever 2 at the lower end of the weighing lever along the axial direction, an angle measuring device 7 is arranged on the upper end surface of the weighing lever, the angle measuring device 7 is used for measuring the deflection angle of the weighing lever 2 by taking the lever support 3 as a supporting point, one end of the weighing lever 2 is rotatably connected and fixed with a tension column 101 extending out of the electromagnetic power meter through a first shaft pin 8, the other end of the weighing lever 2 is rotatably connected and fixed with a connecting column 901 arranged on a calibrated weighing hopper 9 through a second shaft pin 10, and the calibrated weighing hopper 9 is supported on a weight sensor 902, the constant current source 4 is connected with the electromagnetic power meter 1, and the electromagnetic power meter 1 and the angle measuring device 7 are connected with the controller 5.
The technical scheme uses the principle of the steelyard, and utilizes the electromagnetic force generated by the electromagnetic power meter to be equivalent as a standard weight of the steelyard, so as to realize the calibration of 1000 kilograms of large tonnage. The electromagnetic power meter is a well-known technology, and generates a downward electromagnetic force by supplying power to the electromagnetic power meter so that the electromagnetic power meter works normally, the downward force is converted into the electromagnetic force according to a Planck constant, namely the downward force is converted into the electromagnetic force according to the mechanical force required by an object with a moving mass of 1 kilogram, the downward electromagnetic force with different sizes can be generated by using currents with different sizes, and the mass corresponding to the electromagnetic force can be converted. Namely: an electromagnetic power meter with a fixed relation between standard magnetic tension and input current value is formed by using a balance and a standard weight equivalent test in a laboratory based on the Planck constant, and the electromagnetic power meter in the embodiment is an electromagnetic power meter compared with a ton-level weight. Electromagnetic forces have been widely used in physical exercise training equipment. As the system, the lever prop 3 is provided with a first lifting adjusting mechanism which is used for the horizontal correction of the weighing lever.
In order to facilitate adjustment, in the embodiment, the tension column of the electromagnetic dynamometer is provided with a second lifting adjusting mechanism, and the first lifting adjusting mechanism and the second lifting adjusting mechanism are jointly used for horizontal correction of the weighing lever.
The electromagnetic dynamometer 1 in the embodiment is used as a standard to generally generate only a fixed standard magnetic pull force, and the weighing lever 2 is used, so that the correction of different weighing can be realized by only changing the supporting point of the lever support 3 and the weighing lever 2. The lever ratio is adjusted, the mass proportion of the load-bearing objects at the two ends of the weighing lever can be adjusted, and thus the weighing calibration of the mass with large load can be realized by using a low-power electromagnetic power meter. Therefore, the method comprises the following steps: the weighing device is characterized in that the weighing lever 2 is axially provided with a long sliding groove 201, the lever support 3 is arranged in the sliding groove 201 in a sliding mode, the sliding device is used for changing a supporting point of the lever support 3 for the weighing lever 2, and the calibration weighing is changed by changing the supporting point according to a moment balance formula (the moment balance formula of the product of the weights at two sides and the distance between supporting points).
Meanwhile, according to another preferred scheme, the number of the standard magnetic pulling forces is multiple, the multiple standard magnetic pulling forces and the multiple input current values are in a fixed relation, different input current values are changed, different standard magnetic pulling forces are changed, and the calibration weighing is changed by changing different standard magnetic pulling forces formed by different input current values according to a moment balance formula.
In the embodiment, for intuitive convenience of positioning adjustment: the weighing lever 2 is provided with a graduated scale 202 along the long sliding groove, the graduation is a graduation from the connection point of the tensile column of the electromagnetic power meter to the distance of the connection column of the hopper to be calibrated and weighed, and the calibrated weighing can be quickly calculated through the graduated scale.
As shown in fig. 2, the first lifting adjustment mechanism includes a lever pillar base 301, a vertical hole 302 is formed in the lever pillar base 301, a rotatable first adjustment nut 304 is sleeved on the upper end of the vertical hole through a limit notch 303, the lever pillar is screwed into the first adjustment nut 304 through a screw, and the first adjustment nut 304 is rotated to control the lifting of the lever pillar 3. For precise adjustment, the first adjusting nut 304 and the threads on the lever post 3 are fine threads, and the lever post 3 is positioned in the sliding groove 201 through the pin 305.
As shown in fig. 3: the second lifting adjusting mechanism comprises an adjusting base and a tension column extension rod 102, the adjusting base serves as a tension column 101 of the electromagnetic dynamometer, one end of the tension column extension rod 102 is used for being connected with one end of the weighing lever 2 through a first shaft pin 8, a vertical hole 103 is formed in the adjusting base, a rotatable second adjusting nut 105 is sleeved on the vertical hole 103 through a limiting notch 104, the tension column extension rod 102 is screwed into the second adjusting nut 105 through threads, and the second adjusting nut 105 is rotated to control lifting of the tension column extension rod 102. For precise adjustment, the threads on the second adjusting nut 105 and the tension column extension rod 102 are also fine threads.
The calibration structure can form standard equipment to be connected and fixed with the weighing hopper, and the weighing calibration of the weighing hopper 9 can be carried out at any time.
The process of using the system is that firstly, the connection between the tension column 101 of the electromagnetic power meter 1 and the other end of the weighing lever 2 is disconnected; then, determining a supporting point of the lever support on the weighing lever according to a moment relation between the corrected weight and the standard magnetic tension of the electromagnetic power meter, and then performing zero point correction and weighing calibration, for example, performing 1000Kg calibration on the weighing hopper 9, wherein the standard magnetic tension of the selected electromagnetic power meter is 100Kg, the selected weighing lever is 11m, and the supporting point of the lever support on the weighing lever is close to 1m of the side of the weighing hopper, so that 100Kg × 10m is 1000Kg × 1m according to a moment balance formula;
the zero point correction sequence is: the weighing hopper is empty, the adjusted weight is displayed as '0', then the lever support is supported at the supporting point of the weighing lever, and the first lifting adjusting mechanism is adjusted to enable the reading value of the angle measuring device to be '0', namely the weighing lever is in a horizontal state; then, adjusting a second lifting adjusting mechanism to ensure that a tension column of the electromagnetic dynamometer is just connected and fixed with the other end of the weighing lever through a first shaft pin;
the weighing calibration comprises the following steps: inputting current of standard magnetic pull force to the electromagnetic power meter to enable the electromagnetic power meter to form calibrated weight pull force at the other end of the weighing lever, and enabling the weighing lever to incline to the side of the electromagnetic power meter to lose a horizontal state at the moment; filling weighing materials into the weighing hopper, reading the degree value of the angle measuring device, and when the degree value is 0, namely the weighing lever is in a horizontal state, filling the weighing materials to be calibrated; and then, removing the standard magnetic pull force, and correcting the weight reading of the weighing hopper to finish weighing calibration.
Due to the foregoing: the weighing device comprises a weighing lever, a lever support and a moment balance formula, wherein the weighing lever is axially provided with a long sliding chute, the lever support is arranged in the sliding chute in a sliding manner, the sliding arrangement is used for changing a supporting point of the lever support on the weighing lever, and the calibration weighing is changed by changing the supporting point according to the moment balance formula; accordingly, the method further comprises: the support point of the lever support at the lower end of the weighing lever is changed, weighing calibration is carried out again, linear calibration of the hopper to be calibrated and weighed is realized through calibration of different calibration weighing, and meanwhile, online calibration is also carried out.
Also due to the foregoing: the method comprises the following steps that a plurality of standard magnetic pulling forces are provided, the plurality of standard magnetic pulling forces and a plurality of input current values are in a fixed relation, different input current values are changed, different standard magnetic pulling forces are further changed, and the calibration weighing is changed by changing different standard magnetic pulling forces formed by different input current values according to a moment balance formula, so that the method further comprises the following steps: and changing different input current values, weighing and calibrating again, and realizing linear calibration of the hopper to be calibrated by changing different standard magnetic tension formed by different input current values for different calibration weighing.
According to the embodiment of the large-tonnage weightless calibration system of the discontinuous accumulative weighing machine, the load mass of the weighed material is calculated through the output value of the electromagnetic power meter and the set lever ratio, and the load mass of the material bearing corresponding to the lever ratio can be calculated through the electromagnetic power meter only when the weighing lever is in a balanced state through the measurement of the angle measuring device. The weighing hopper load mass calculated by the weighing hopper load mass symmetrical weighing sensor calculated by the power meter is calibrated, and the system calibration of the weighing hopper load mass of the loading station can be realized without weighing weights. The calibration of the mass of the loading station can be realized without weights, the calibration efficiency of the mass of the loading station is improved, and the calibration of the weighing weights in remote transportation is avoided; the mass calibration precision of the loading station is improved, and uncertain errors caused by mass calibration due to weight abrasion and corrosion can be avoided; the on-line mass calibration and the mass correction of the weighing system of the loading station are realized, the weight is not required to be replaced when the vehicle is stopped during mass calibration, the loading mass calibration efficiency is improved, calibration data can be analyzed and stored on line and persistently, historical data are counted, fault diagnosis is carried out on a calibration instrument, actual data in each calibration process is recorded, the calibration process is compared with the process of weight calibration, the calibration process is more transparent and traceable, and the automation and the intellectualization of mass calibration of the loading station can be realized.
Claims (6)
1. A large-tonnage weightless calibration system of a discontinuous accumulative weighing apparatus is characterized by comprising an electromagnetic power meter, a weighing lever, a lever support and a constant current source, wherein the electromagnetic power meter is fixed on a platform, the lever support supports the weighing lever at the lower end of the weighing lever along the axial direction, an angle measuring device is arranged on the upper end surface of the weighing lever and used for measuring the deflection angle of the weighing lever by taking the lever support as a supporting point, one end of the weighing lever is rotatably connected and fixed with a tension column of the electromagnetic power meter through a first shaft pin, the other end of the weighing lever is rotatably connected and fixed with a connecting column arranged on a calibrated weighing hopper through a second shaft pin, and the constant current source is connected with the electromagnetic power meter; wherein: the electromagnetic power meter is formed by calibration, and has a fixed relation between standard magnetic tension and input current value, and the lever support is provided with a first lifting adjusting mechanism for horizontal correction of the weighing lever.
2. The calibration system according to claim 1, wherein the tension column of the electromagnetic dynamometer is provided with a second lifting adjustment mechanism, and the first lifting adjustment mechanism and the second lifting adjustment mechanism are jointly used for weighing lever level calibration.
3. The calibration system according to claim 1, wherein the weighing lever is axially provided with a long sliding groove, the lever pillar is slidably arranged in the sliding groove, the sliding arrangement is used for changing a supporting point of the lever pillar on the weighing lever, and the calibration weighing is changed by changing the supporting point according to a moment balance formula.
4. The calibration system of claim 1, wherein the number of the standard magnetic pull forces is plural, the plural standard magnetic pull forces and the plural input current values are in a fixed relationship, different input current values are changed to further change different standard magnetic pull forces, and the calibration weighing is changed by changing different standard magnetic pull forces formed by different input current values according to a moment balance formula.
5. The calibration system as claimed in claim 1, wherein the first lifting adjustment mechanism includes a lever pillar base, a vertical hole is formed in the lever pillar base, a first rotatable adjustment nut is sleeved on the upper end of the vertical hole through a limiting notch, the lever pillar is screwed into the first adjustment nut through a screw, and the first adjustment nut is rotated to control the lifting of the lever pillar.
6. The calibration system according to claim 2, wherein the second lifting adjustment mechanism comprises an adjustment base used as a tension column of the electromagnetic power meter and a tension column extension rod, one end of the tension column extension rod is used for being connected with one end of the weighing lever, a vertical hole is formed in the adjustment base, a second rotatable adjustment nut is sleeved on the vertical hole through a limiting notch, the tension column extension rod is screwed into the second adjustment nut through threads, and the second adjustment nut is rotated to control the lifting of the tension column extension rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122739044.4U CN216349072U (en) | 2021-11-10 | 2021-11-10 | Large-tonnage weight-free calibration system of discontinuous accumulation weighing apparatus |
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| CN202122739044.4U CN216349072U (en) | 2021-11-10 | 2021-11-10 | Large-tonnage weight-free calibration system of discontinuous accumulation weighing apparatus |
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| CN216349072U true CN216349072U (en) | 2022-04-19 |
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| CN202122739044.4U Active CN216349072U (en) | 2021-11-10 | 2021-11-10 | Large-tonnage weight-free calibration system of discontinuous accumulation weighing apparatus |
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- 2021-11-10 CN CN202122739044.4U patent/CN216349072U/en active Active
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