| 摘要 |
PURPOSE:To facilitate turning by providing driving wheels provided on both running bodies, a single motor, and a gear type differential mechanism part for differentially distributing the driving force of this motor to the driving wheels of both running bodies. CONSTITUTION:When a running body 6 on the forward directional front side is reached to an intersecting point A, a motor 85 is stopped, and a turn table 2 is turned at 90 deg. by a table driving mechanism 3. When the motor 85 is operated, then a large load acts on the rear side running body 6, so that an epicyclic gear 84g revolves on its axis in addition to orbital motion, the rotating power of the motor 85 is transmitted to the front side sprocket 82, and the rotation is accelerated to separate the front side running body 6 from the intersecting point. At a point of the time when a moving wall 5 is turned at 46 deg., the speeds of both the front and rear running bodies 6 are equalized. Thereafter, the rear side running body is accelerated, and in the stage where it is reached to the intersecting point A, the table 2 is turned. |
