Push-back rack is mainly composed of post, crossbeam, track and carrier car, and the track has a certain gradient (about 3 degrees). The front and rear beams are overlapped and connected with a plurality of trolleys, and the pallet (or material box) is pushed into the trolley from the outside, and the stored goods will push the original goods inside. When the trolley is over the slope and the goods are taken away, the trolley inside will slide down automatically. The push-back racking has the advantages of large storage capacity and high space utilization rate, and is suitable for goods of less varieties and large quantities. The utilization rate of the space is very high, and the access is more flexible and convenient. The push-back shelve adopts the advanced and later operation mode, and the incoming and outgoing goods are on the same side. The overall shelf depth should not be too deep, otherwise, because pallet cars are embedded in each other, the space will be sacrificed.
The advantages of push-back shelving:
(1) Only one main channel is needed to improve the storage space utilization, and the pressing shelf can increase the utilization rate of the floor by about 60%;
(2) Compared with the drive-in rack, forklift needn’t run into the channel, when the goods are stored and transported, the forklift is only located at one end of the lower level of the shelf passage, and does not need to enter the goods storage passage of the rack, and the requirement of the forklift is relatively low;
(3) Compared with the drive-in rack, because forklift not into the channel, so each layer can be a variety of specifications,and is several times in storage varieties and specifications more than drive-in rack;
(4) Push-back rack is based on the principle of "advanced and later". The pallet (or material box) is placed on the trolley, and the stored goods will push the original goods inside;
(5) When the outer cargo is taken away, the trolley will slide down automatically, and the incoming and outgoing goods are on the same side. The trolley can be painted with different colors, which is easier to store visually The car can be painted with different colors, which is easier to store visually.