Shuttle racks have been widely used in the market, but now most shuttle cars can only perform linear reciprocating motion. The four-way shuttle is like an intelligent robot, connected to a wireless network and WMS system, and can go to any cargo location in conjunction with a hoist. Therefore, it is a true four-dimensional shuttle.

The four-way shuttle have higher stability. For example, in the traditional multi-layer shuttle system, if the elevator malfunctions, the entire tunnel operation will be affected; The four-way shuttle system, on the other hand, can be continuously operated by other elevators, making the system almost unaffected.

In terms of overall system cost, the four-way vehicle system also has advantages. Due to the fact that the cost of a typical multi-layer shuttle or stacker crane system is closely related to the number of lanes, with the addition of order quantity and no inventory quantity, each lane added to these systems will incur corresponding costs, while the four-way vehicle system only requires the addition of a small number of cars, resulting in lower overall costs.

The four-way shuttle system is very suitable for industries such as medicine, food, household appliances, sedans, tobacco, etc. There are various storage forms such as irregular warehouses (with irregular shapes and irregular inbound and outbound), floor warehouses (with single floor warehouses and shorter warehouses), multi floor through warehouses (with single layer warehouses being shorter, inbound and outbound may be on the first floor), flat warehouses (- ≤ 13.5 meters, if the floor is too short, using stacker cranes is not suitable), and vertical warehouses (≥ 18 meters, using stacker crane storage locations or insufficient efficiency), All four-way cars can meet the needs in these situations. The market potential of four-way cars is undoubtedly favored by Volkswagen. "Goods to person" picking is a promising skill for dismantling and picking, and it is also one of the key skills for future logistics systems.