| 摘要 |
<p>An actuator device for use in a bi-directional conveyor belt (3) comprises a toothed wheel (11) which rotates depending on the belt's transport direction and is engaged with a toothed rack (12) on a toothed element (13) which is movable between two extreme points and which has at each end portion (14) a pin (15) which, when a force is applied in the direction of the end (16) of the toothed element, is arranged to move to a position in which it forms a tooth as an extension of the toothed rack (12), and when a force is applied in the direction of the opposite end (16') of the toothed element is arranged to move to a retracted, yielding position relative to the toothed rack (12).</p> |
