Characteristics of Aisle stake type(PXD): The aisle stack type of parking system has the follwing characteristics :Occupying small spaces,varied design,large volume of capacity,quick storage and withdrawing of the vehicle,less investment,lower costs and maintenance expenses,easier and more convenient operation. Fully utilize the limited space,save the land resource,With small occupation area and the large capacity of storage,the utilization of space is very effective. The type of fixed elvator+each laye moving dolly,the system each times deposit and withdraw the cars use 70 seconds and a have abilitys of,several peoples do it at the same time.