DOUBLE-STAGE PARKING APPARATUS

PROBLEM TO BE SOLVED: To provide a double-stage parking apparatus which is serviceable even in a small installation space and which can stably move up and down without any guide rails for pallets. SOLUTION: One end of chains 1a-1d is fixed 2a-2d on the upper face at the four corners of a pallet A. Upper fixed pulleies 4a-4d are installed at the upper position of a pit B. Lower fixed pullies 5a-5d and stationary pullies 6a-6d are installed at the lower position of the pit. Respective chains are hung from the upper fixed pullies to the stationary pulleies. Two chains 1a, 1b arranged at one side of the pallet are hung to the lower fixed pullies 5c, 5d located on the respective diagonal lines and two chains 1c, 1d arranged at the other side of the pallet are hung to the lower fixed pulleies 5a, 5b located at one side of the pallet. The other end of respective chains is fixed 3a-3d to the lower face of the four corners of the pallet and either of respective chains is connected to a drive motor M.