At present, the position of stacker in the automated warehouse belongs to the core equipment. At present, when the automated warehouse is used, the most common type of stacker is classified according to the structure form and running track.The goods can be transported from one place to another by manual operation, semi-automatic operation or full-automatic operation.Among them, the rail roadway stacking crane is the most important lifting and transportation equipment in the automated warehouse, which is the symbol of the characteristics of the warehouse. Its main purpose is to run along the track in the roadway of the high-rise shelf warehouse.
Generally, the stacker with high lifting height, large lifting capacity and high horizontal running speed adopts double column structure.The lifting mechanism of double column stacker generally adopts chain drive, and the chain wheel is driven by the motor reducer to rotate, which leads the loading platform to move up and down along the column or the guide rail of the crane.Due to the limitation of space size, the transmission and arrangement of chain traction platform or counterweight device are more complex, but the positioning is more accurate.
The horizontal driving device of the stacker is generally installed on the lower beam of the stacker, and the wheel is driven by the motor reducer to make the stacker run along the horizontal direction.This kind of ground driving mode is most commonly used.Generally, two load-bearing wheels are used to run along the track (usually also called ground track) laid on the ground.The lower two groups of horizontal wheels run along the track, and the upper two groups of guide wheels run along the upper track (usually also called the sky track) to guide.According to its running track form, there are two types of stacker: straight running stacker and curve running stacker.
The lower deflection of the fork of the stacker.Fork deflection is a very important performance parameter of the stacker, which is directly related to whether the stacker can work normally.Due to the limitation of structure type, material and processing heat treatment process, under the same condition, the lower deflection of the fork of the domestic three-dimensional stacker is 20% – 30% larger than that of foreign stackers.Improving the structure of the fork, selecting material reasonably and improving the technological means are the important measures to reduce the deflection of the fork and ensure the working performance of the stacker.
During the high-speed operation and lifting of the stacker, especially at the same time, due to the friction between the wheel and the track, and the vibration and friction of the lifting chain or wire rope, a large noise will be produced.According to the standard, when the stacker is working, its noise value is not higher than 84 dB.At present, the practical application of three-dimensional warehouse shows that the walking speed is not more than 80 m / s, but more than 100 m / s, generally difficult to guarantee.
With the rapid development of the times, stacker is indispensable in automated warehouse.The world’s major industrial countries focus on the development of new products with reliable performance and the adoption of high and new technologies, and pay more attention to practicality and safety.