| 摘要 |
An automatic centering device for a conveyor belt for industrial and/or agricultural machinery looped around at least two tensioning rollers characteristically comprises: a detection system which generates a signal correlated to a transversal movement of the belt in a direction relative to its reference position centered on the two rollers; actuator means which drive the rotation of at least one of the two rollers in a plane parallel to the main plane in which the belt lies; a control unit, with the input connected to the detection system and the output connected to the actuator means. The control unit continuously implements a procedure which involves at least, in succession, a step of acquiring and processing the signal, a step of comparing the signal processed with a predetermined threshold value, and, if the threshold value is exceeded, a step of activating the actuator means in which the two rollers are made to converge on the side opposite that of the transversal movement of the belt by a predetermined angle relative to their starting configuration for a predetermined time, to promote a transversal movement of the belt in the opposite direction and return it to its reference position.
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