| 摘要 |
An automated storage and retrieval system (10) includes two confrontingly opposed, columnar arrays (12, 14) which define a plurality of vertically spaced tray- receiving recesses (20). A platform (28) is vertically displaceable along and between the arrays and carries an extraction device (46) operable for withdrawing a selected tray (80) from an array recess onto the platform, and for inserting a tray supported on the platform into a vacant recess in either array. The extraction device include s a pair of rods (72, 74) carried on and for movement longitudinally along the platform, toward and away from the opposed arrays, about opposed continuous-loop drive belts (48, 50) which lie in substantially vertical planes. The rods are releasably engageable, through rotation of the drive belts, within handles (98) provided at and extending longitudinally outwardly from the opposite ends of each tray to enable withdrawal and insertion of the selected tray.
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