The beam type shelf, also known as tray type shelf, is mainly composed of shelf pieces and beams. This type of shelf has a simple structure and is the most commonly used one of the storage shelves. The beam type shelf can be designed according to the different characteristics and requirements of the stored goods, and the use of auxiliary facilities can be increased to achieve the purpose of storage. If the pallet support is configured on the beam, the deformation deflection of the pallet can be reduced, the pallet unit goods with inconsistent depth can be placed, the layer net and layer board can be laid on the beam, the bulk items with different volumes can be placed, the V-shaped pallet support can be configured on the beam, and the cylindrical items can be placed. When the load of the working tool can ensure the weight of the goods in the access pallet unit, in principle, the load of the beam rack can be achieved. The beam type shelf is not only suitable for the storage of many varieties and small quantities of goods, but also suitable for the storage of few varieties and large quantities of goods. Each pallet unit of goods can be accessed separately by 100%, and the operation is convenient and fast, and the shelf cost is not high. It is widely used in manufacturing, third-party logistics, distribution centers and other fields.