Grain flow measuring device, especially for combine harvesters

摘要

Grain-flow measuring device with a sensor plate (1), on which a piezoelectric-crystal vibration recorder (2) is arranged behind a baffle surface (10), behind which a vibration-damping foam body (4) is held by double edge bends (10 - 13, 15 - 17) of the sensor plate (1). …??A holding plate (5) is mounted in the foam body (4), and an amplifying and evaluating circuit (30 - 32) with a read-out counter (32) is arranged in the holding plate (5). …??Grain-flow measuring devices of this type are arranged in a harvesting appliance under a shaker hurdle near its exit side, thereby avoiding grain losses and mismeasurements. …??The damping of the baffle surface (10) by the foam body (4) affords such a vibration damping that a determination of the grain mass is obtained from the vibration frequency found. …IMAGE…