| 摘要 |
<p>An electro-mechanical orientation system for conveyed articles having a distinguishable top and bottom such as a rail tie plate or the like comprising a sensor frame (18) having a transverse pivot axis (30), a plurality of elongate sensor fingers (32) pivotable about that axis and subject to a biasing force, a plurality of notched beam interceptors (42), one mounted to each sensor finger (32), a corresponding plurality of opto switches (64) and a logic circuit, whereby the frame (18) is oriented in relation to a conveyor surface (12) so that the sensor fingers (32) intercept and are triggered by the conveyed article (16). The pattern of triggered sensor fingers (32) is transmitted through the beam interceptors (42) and opto switchers (64) to the logic means, from where it may be used to trigger a conveyed article reorientation device.</p> |
