| 摘要 |
A stacker crane includes a lower carriage including a lower drive wheel, a lower travel motor, and a support located apart from the lower drive wheel; an upper carriage including an upper drive wheel and an upper travel motor that drives the upper drive wheel; and a mast fixed to the lower carriage, standing upward from the lower carriage and connected to the upper carriage, and including a transfer device capable of moving up and down. A displacement mechanism that raises and lowers the support is provided on the lower carriage between a grounded position supported by a lower rail and a retracted position lifted off the lower rail. The support is lowered to the grounded position when the stacker crane is installed between the lower rail and the upper rail and when the stacker crane is stopped for maintenance, and the support is raised to the retracted position when the stacker crane is operated. |
