Weighing scales – Computer – Electrical
Patent
1983-04-04
1985-02-19
Miller, Jr., George H.
Weighing scales
Computer
Electrical
177141, 177146, 177 1, G01G 2337, G01G 1910, G01G 1902
Patent
active
044999607
ABSTRACT:
The present invention is directed towards a method for measuring the weight of bulk goods loaded or, alternatively, loading performance over time of hydraulic earth moving machines, excavators or similar machines which are provided with a hydraulically operated material loading scoop. Typically, these loading scoops rotate about and are supported on a loading arm. The scoop is controlled and tilted by a hydraulic piston-cylinder unit. The determination of the weight of bulk goods loaded or of the loading performance of the excavator is often required by the operator and the manufacturer of the apparatus, both for the determination of the performance of the apparatus per work shift, or for the computation of the fully loaded weight of a transport vehicle used in carrying away the bulk goods. The measured values used in determining the weight of the loaded material are the pressure in the piston-cylinder unit, arragned between the loading scoop and the loading arm, and an angle defined by the line passing between the pivot point ofthe shovel and the center of gravity of the empty shovel with respect to a horizontal line. These values are fed into a computer, and by using certain predetermined values and a simple force equation, the weight of the contents of the scoop is calculated and then visually indicated. The weight may be accumulated, and then indicated on command, in order to determine the total loaded quantity of bulk goods. Alternatively, the accumulated weight can indicate the loaded performance of the apparatus if displayed at predetermined time intervals.
REFERENCES:
patent: 3913690 (1975-10-01), Hutchings et al.
patent: 4055255 (1977-10-01), Vasquez
patent: 4230196 (1982-10-01), Snead
Dobner Eberhard
Ehrich Gerd
Mannesmann Aktiengesellschaft
Miller Jr. George H.
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