| 摘要 |
<P>PROBLEM TO BE SOLVED: To lift paired of left and right lifted bodies moving to optional positions in a horizontal direction at coincident heights by an electric motor, and to reduce the size, the weight and the costs of a device itself by reducing the number of electric motors. <P>SOLUTION: One of respective feed screws (25, 27) and at least one of rotors (59, 61, 63, 65, 67, 69, 71, 73) are rotated by an electric motor (45) driven in the swung state of link arms (47, 49, 51, 53) according to the moving positions of horizontal moving bodies (17, 19) of horizontal frames (5, 7) to travel driving power transmission members (75, 77, 79, 81), and the feed screws (25, 27) are rotated in synchronization to lift the lifted bodies (33, 35) by equal moving distances. <P>COPYRIGHT: (C)2013,JPO&INPIT |
