| 摘要 |
<p>PURPOSE:To reduce the traveling noises of wheels by using the wheels different in diameter, and providing flexible bodies on their outer peripheries in an automatic warehouse provided with an entry/delivery device supported and guided on a rail via a pair of the front and rear wheels and travelable on the fixed path. CONSTITUTION:An entry/delivery device traveled on a floor rail 6 along the fixed path in an automatic warehouse has a travel frame longitudinally provided with a driving wheel 15 and a driven wheel 16. Main bodies 22, 23 of the wheels 15, 16 have different diameters D, (d), where D>d, and they are made of iron. Tubular flexible bodies 24, 25 made of urethane are fitted on the outer peripheries 22a, 23a of the main bodies 22, 23 of the wheels 15, 16. The rolling sound of the wheels 15, 16 is reduced. Even if flat spots A, (a) are generated on the flexible bodies 24, 25 when the wheels 15, 16 are stopped for a long period, the occurrence timing of special noises during a travel differs because the wheel diameters differ, and the special noises can be reduced.</p> |
