Bulk weighing of material on conveyor - employs detector attached to lever on pulley depressed by conveyor load

摘要

Bulk weighing or dosage of materials on conveyors suffers from parasitic forces such as out of alignment of rollers and variations of power as a result of force variations due to extractions of material. These variations result in false readings and are overcome by measurement of weight as a function of torsion applied to an articulated axis. Material in a is transported along a conveyor (7) to a weighing area between two pulleys (4, 11) whose axes (5, 10) are coupled by an articulated lever (3). The lever has a drum (4') at one end and is attached to a force detector (17) at the other end. Depression of one pulley (10) by a weight force (P) results in its transmission via the lever to a force detector.