| 摘要 |
PROBLEM TO BE SOLVED: To prevent derailing of a guide roller from a rail by attaching a cage hanging shaft to a hanging so as to be rotatable about its axial center, and attaching a chain attachment to the cage hanging shaft such that a collar of the guide roller is biased to the guide rail by the elasticity of the cage hanging shaft. SOLUTION: When one of front and rear cages with respect to a cage concerned meanders in one direction during conveying by means of chains, a cage hanging shaft 4c on a side closer to the meandering cage is largely deformed, and deformation of the cage hanging shaft 4c on the other side is reduced. As a result, bounce caused by the elasticity of the cage hanging shaft 4c is rendered larger on the meandering side, while rendered smaller on the other side. As a result, the meandering is automatically restored due to the elastic reaction. Further, during the meandering, a gap between a collar portion 5a and a rail 6 remains zero on both the meandering side and the other side. Thus, the parking apparatus can exhibit excellent effects such as an effect of preventing derailing of a guide roller from the rail, without enlarging the entire apparatus and increasing the costs of the same.
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