Weighting method for compensating tension change of belt in real time
A technology of belt tension and real-time compensation, which is applied in the direction of continuous material flow weighing equipment, weighing equipment testing/calibration, weighing, etc., can solve the problem that the accuracy of electronic belt scales cannot be kept stable for a long time, so as to eliminate the influence and improve The effect of weighing accuracy
Inactive Publication Date: 2009-12-09
周明远
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Problems solved by technology
Therefore, the random change of the belt tension (that is, the elastic coefficient K(t)) causes the accuracy of the electronic belt scale to be unable to maintain long-term stability
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[0024] like figure 1 As shown, a weight is placed above the lower belt 8 of the belt conveyor, which is a pressure wheel 7; a belt tension detection sensor 6 is set to measure the pressure electric signal applied by the weight to the belt; the roller 8 can be guided by The device is positioned on the belt, and the specific structure is as follows figure 2 and image 3 As shown, the mounting bracket 12 is provided with a vertical guide groove 14 that can move the pinch wheel rotating shaft 11 up and down, and the two detection sensors 6 are fixed on the mounting bracket 12 above the pinch wheel by screws 10. The pull rod 9 connected by the rotating shaft 11 of the pinch wheel, the detection sensor 6 can adopt a shear beam sensor, and the upper end of each pull rod 9 is fixed on the pull-type attachment of the detection sensor 6 . The two ends of the pinch wheel shaft 11 are fixed with counterweights 13 . The electrical signal measured by the sensor 6 is the pressure exerted...
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The invention discloses a weighting method for compensating the tension change of a belt in real time. The weighting method comprises the following steps: arranging a weight above a lower belt of a belt conveyer; using a sensor to detect an electric pressure signal applied by the weight on the belt; using a weighting instrument of an electronic belt balance to read the electric pressure signal detected by the sensor and derive a ratio of an initial electric pressure signal F0 (t0) to a real-time electric pressure signal F0 (tn); multiplying the ratio and an electric material weight signal detected by the weighting sensor of the electronic belt balance; and processing the arithmetic product by the weighting instrument to obtain a real-measured weight after eliminating belt tension change factors. The invention finds a compensation coefficient of the belt tension change by measuring the change of a pressure value of the fixed weight applying to the lower belt of the belt conveyer in different time so as to eliminate the influence brought by the belt tension change and improve the weighting precision of the electronic belt balance.
Description
technical field [0001] The invention relates to a weighing method capable of real-time compensation of belt tension changes. Background technique [0002] The electronic belt scale is a device that can dynamically measure materials in real time while the belt conveyor is transporting large quantities of materials. It is widely used in various industries because of its easy installation and use and intuitive readings. However, the weighing accuracy of existing electronic belt scales cannot maintain long-term stability after calibration (checking), and can only be used in occasions with low accuracy requirements such as internal assessments of enterprises, such as bulk cargo import and export terminals, coal-fired power plants, etc. A large number of enterprises and departments that require accurate measurement must also install a set of physical verification devices for belt scales that cost hundreds of thousands of yuan. The physical verification is performed once a day or e...
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IPC IPC(8): G01G23/01G01G11/00
Inventor 周明远
Owner 周明远