| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure travel on a branch path of conveyance by means of a simple arrangement. SOLUTION: A truck 23 can be made to stably travel from a linear path of conveyance to a branch path of conveyance, because even if either a travel roller 26 or another coaxial travel roller 26 is derailed, the other of the rollers travels on a surface of travel 22a. Thus, the need to use a lateral slip prevention mechanism for the addition of travel rollers and guide rollers as in conventional techniques is eliminated, and only the travel rollers 26 need to be added, so that stable travel is made possible by means of a simple arrangement without significant increases in the number of part items and man hours for assembly.</p> |
