| 摘要 |
<p>PURPOSE:To stack dollies in the stable state, and ensure the stability at taking and movement. CONSTITUTION:A stacking locking projection 4 whose sectional area is gradually reduced downward is vertically provided on the lower surface of the base board 1 of a dolly having rolling wheels 2 on the lower surface and a holding through- hole on the outer circumferential edge, and a conical stacking and slippage preventing recessed part 5 by which the locking projection is engagingly locked is provided on the upper surface of the base board 2, and a locking hole 5a for the locking projection 4 is provided on the bottom surface of the recessed part 5.</p> |
