According to the current application, the types of shelves commonly used in warehousing systems include: beam-type racks, narrow-bay racks, double-depth racks, drive-in racks, push-back racks, gravity racks and shuttle racks.
(A) beam shelf
Beam racking is the simplest racking system in logistics storage. A forklift can freely access any palletized cargo in the system. The equipment investment cost of such a racking system is low, and it has adjustability and adaptability. However, due to more forklift lanes and low storage density, only 30%~35% of warehouse space can be used.
(B) narrow lane-type shelves, double depth shelves
Narrow lane-type shelves and double-depth shelves belong to the improved type of beam-type racks. Special types of forklifts are required to access the goods. The utilization in the height and depth directions is higher than that of beam-type racks, but the cost is slightly higher than that of the cross beam type. Shelves space utilization 45%~60%.
(C) push back shelves
Pushback shelves are dense storage racking systems with high investment costs. Advanced access to goods, suitable for large quantities, many items of goods. The forklift operates outside the shelf and completes access operations by pushing the trolley. The shelf design depth is generally up to 5-7 pallets deep. Access efficiency is higher than drive-in racks. Space utilization 60%.
(D) Gravity shelves
Gravity shelves are dense storage racking systems with high investment costs. The first-in-first-out cargo access is suitable for storing large quantities of goods with a large number of items. However, there are certain requirements for the bottom of the pallet. Space utilization 80%.
(E) Shuttle Car Shelves
Shuttle racks are dense storage racking systems with high investment costs. The goods are first-in, first-out or advanced, and are suitable for storing goods with large quantities and many items. However, there are certain requirements for the bottom of the pallet. Space utilization 80%.
