Grain flow measuring device, in particular for harvesters

Details Grain flow measuring device, in particular for harvesters Grain flow measuring device, in particular for harvesters

1992-10-09

1994-05-17

Melius, Terry L.

Crop threshing or separating

Means responsive to a sensed condition

Grain loss

56 102, A01F 1200

Patent

active

053122992

ABSTRACT:
A grain flow measuring device having a sensor plate, on which a piezo-crystal oscillation sensor is disposed behind an impact surface, behind which an oscillation-damping foam material body is maintained by means of doubly folded-over edges of the sensor plate located at its edges. A retainer plate is seated and an amplifier and evaluation circuit with a readable counter is disposed in the foam material body. Grain flow measuring devices of this type are disposed in a harvester below a rocker tray near its output side, because of which grain losses and false measurements are avoided. Damping of the impact surface by means of the foam material body results is such oscillation damping that the determination of the grain mass results from the detected number of oscillations.

REFERENCES:
patent: 3935866 (1976-02-01), Northup et al.
patent: 4230130 (1980-10-01), Staiert
patent: 4517792 (1985-05-01), Denning et al.
patent: 4902264 (1990-02-01), Diekhans et al.

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