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Rail-guided vehicle system "Sorting Transfer Vehicle" (STV)
Daifuku's rail-guided vehicle system SORTING TRANSFER VEHICLE is a pallet sorting system designed to provide high-throughput material handling in conjunction with the AS/RS.
A single or multiple STVs connect stacker crane aisles and in/out stations to efficiently store and deliver pallets.
STV systems can work with AS/RS as pallet sorters and sequencers in shipping preparation areas, or as a standalone system.
Fast, high throughput
STVs glide smoothly and quietly at speeds up to 200 m/min, with load transfer speeds of 30 m/min. Each vehicle speed is adjusted according to position, space availability, and load presence (loaded/empty). Vehicles are assigned to stations to maximize efficiency, avoiding unnecessary movement and energy consumption.
Straight or L-shaped layouts are available for single-shuttle systems. Straight and continuous loop layouts are available for multi-shuttle systems. Standard components can be easily configured to meet a variety of building layout, space and performance requirements.
STV systems are designed to expand along with your business. As operating volume increases, simply add more STVs to the system to increase capacity. STV layouts can also be expanded using the existing power supply, connecting new components to the existing track and input/output stations as needed.
STVs sort loads to different stations without complex conveyor intersections that are likely to cause errors or damage to pallets. This is in part because the STV is travelling while the pallet remains stationary on top of it.
STV maintenance work can be done while the system is running unless it is a single-shuttle system.
Single shuttle system
A single STV travels on a straight or L-shaped rail to deliver pallets between input/output stations and stacker crane aisles.
Dual shuttle system
Two STVs travel on a straight rail, capable of handling 50% more throughput than the single shuttle system. This system can be operated as a single shuttle system while one STV is under maintenance.
Multi-vehicle loop system
The multi-vehicle loop system works great for large scale distribution systems integrating AS/RS, conveyors, and other material handling equipment. It can also operate as a standalone pallet sorting system without an AS/RS.
Cold-resistant STV down to -30 degree environment is available to deal with conveying and sorting needs in cold warehouse.
Gravity buffer conveyor
Gravity conveyors buffer shipping pallets in first-in last-out orders ready for prompt loading to truck.
Maintenance station enable to keep the system running while performing maintenance on a vehicle.
Off-peak evacuation pit
With a evacuation space for unused vehicles during off-peak period, energy consumption can be reduced up to 30%, and the service life of vehicle parts is extended.
Various Daifuku products, including STVs, streamline the printing to shipping process.
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