High-Speed Rail-Guided Vehicle - Sorting Transfer Vehicle (STV)
Daifuku’s Sorting Transfer Vehicle (STV) is a fast, flexible and easily installed material transport system. STVs can be used to move loads of all sizes in a warehouse. For example, a STV may be used as a sorting tool for goods coming out of storage and heading to shipping. STV features sorting and collecting capabilities for multiple AS/RS aisle conveyor stations. It enables picking by order line and sorting by destination to one location.
Separate input/output stations enable the STV to perform multiple tasks at one time. STVs are compact and move agilely over a track system, enabling higher throughput than conveyors. The STV track can be arranged in a loop or straight line to accommodate a variety of applications, such as mixed SKU pallet picking, cycle counting, quality inspection, load sorting and truck loading. Advantages of STVs include: fewer motors, no single point of failure, high-speed, high-throughput and expansion flexibility to handle future growth.
Daifuku's STVs are designed for seamless integration with mini load and unit load AS/RS to effectively transport raw materials, work-in-process and/or finished goods. STVs can also integrate with conveyor or ergonomic workstations to facilitate efficient order picking for consolidation and shipping.
Features
High speed
Close order traffic control
Multiple layout options (multi-vehicle loop or single-vehicle shuttle)
Variety of models (carton and pallet handling)
Microprocessor control with RF (Radio Frequency) communication
Expandable by adding vehicles
Easy maintenance
Quiet operation
Sort loads to different delivery stations without complex conveyor intersections
Accommodate a variety of building layout, space and performance requirements
Bi-directional movement on single straight track for load pickup and delivery
Modular layout simplifies system modification/expansion. Increase system capacity by simply adding vehicles
Benefits
Improved inventory control
Increased accuracy
Increased throughput
Eliminates of single-point failure; system can continue operating if a vehicle fails
Enhanced product protection - smooth transport of items or goods
Specifications
The STV family includes product variations such as load handling (tote/box vs. pallet), layout (shuttle or loop), input/output/transfer mechanism (roller conveyor, chain conveyor, fork top) and number of vehicles. STV track can be arranged in a loop or straight line to accommodate a variety of uses such as mixed SKU pallet picking, cycle counting, quality inspections, load sorting and truck loading. STV's advantages over conveyor delivery systems include: fewer motors, no single point of failure, high speed, high throughput and flexibility to expand to handle future growth.
Standard load weight capacity: 50-1,500 kg (110-3,300 lbs.)
Standard horizontal speed: 100-200 m/min. (323-656 ft./min.)
Standard transfer speed: 12-30 m/min. (39-98 ft./min.)
Standard load footprint: 300-1500 mm x -350-1500 mm (11.8-59.1 in. x 13.8-59.1 in.)
Primary Problems Addressed:
Floor space
Need more space for production
Productivity
Limited capacity in storage and production areas
Lack of responsiveness to product orders
Inventory
Poor product accessibility
No real-time product tracking (WIP buildup)
Ergonomics
Workers in hostile environments
Workers walking long distances
Excessive noise levels from material handling equipment
Safety hazards
Labor-intensive processes
Disjointed Operations
Multiple staging areas
Product is often moved from one staging area to another
