- Product Description
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Four-way shuttle automated warehouses (AS/RS) are currently the mainstream solution in high-density intelligent warehousing. Simply put, it consists of four parts: four-way shuttles, high-speed elevators, racking systems, and a scheduling system.
Core Principle: Shuttle and Elevator Coordination
● Four-way Shuttles: Can travel in four directions (forward, backward, left, and right) on racking tracks, allowing them to freely move within an entire racking level to access and retrieve goods.
● Elevators: Responsible for moving the four-way shuttles up and down levels; typically one is deployed per aisle or area.
● Through the coordinated operation of "shuttles running horizontally and elevators delivering vertically," the system can flexibly schedule vehicles to reach any storage location.
Key Advantages
● High Density: Almost the entire area, except for the main aisles, can be racked, increasing storage space by 20%-50% compared to stacker crane warehouses.● High Flexibility: The number of vehicles can be increased or decreased arbitrarily to cope with business peaks and troughs; if one shuttle breaks down, others can continue operating, providing strong fault tolerance.
● Scalability: Racking, shuttles, and elevators can be deployed in batches to adapt to business growth. Applicable Scenarios (Should meet both criteria):
Pallet or large bin storage (standard 1.2m×1.0m or 1.2m×1.2m pallets)
● Irregularly shaped or irregularly shaped warehouses where stacker cranes are difficult to deploy
● Moderate to large SKU count (hundreds to thousands), with fluctuating outbound volumes (e.g., promotions, seasonal demand)
● Requires high-density storage with potential for future expansion
Typical Application Industries
● Cold chain (fully utilizes height to reduce the volume of low-temperature areas)
● Manufacturing line-side warehouses (flexibly adapts to changes in material types)
● Third-party logistics (meets the flexible needs of different customers)
● Industries with high pallet standardization, such as food and beverage, chemicals, and auto parts
Main Challenges
● Scheduling Algorithms: Multi-vehicle collaborative obstacle avoidance, path optimization, and task allocation are key.● Charging and Maintenance: Charging locations and accessible maintenance lanes need to be planned.
● Return on Investment: The unit price of the equipment is higher than that of the mother-daughter pallet truck; economies of scale are only realized at scale (typically ≥3000 storage locations).
Selection Recommendations
● 2000-5000 storage locations with regular shapes: Stacker cranes and four-way pallet trucks are both suitable.
● >5000 storage locations or irregularly shaped storage: Four-w
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Shengyide Intelligence is an efficient integrator of automated warehousing solutions. The company covers core technologies such as storage systems, stacking systems, intelligent handling systems, conveyor equipment integration, and control management software WCS, WMS, MES, and digital twins, all of which are independently developed and produced; At the same time, offices will be established in the three provinces of South China, Southwest, and Northeast. The main products include: stacker crane type vertical storage, four-way vehicle type vertical storage, stacker crane, shuttle car, RGV, AGV, elevator, conveying equipment, electrical control system and related supporting facilities.
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