Three-dimensional warehouse tunnel stacker crane
stacker crane
The stacker crane is the most important handling, lifting, and stacking equipment in the automated three-dimensional warehouse. It has a decisive impact on the in-out efficiency of the three-dimensional warehouse. It is one of the key pieces of equipment for whether the three-dimensional warehouse can meet the design requirements.
The stacker crane works between the shelves of the three-dimensional warehouse. In order to save space and increase the inventory in the limited space, the spacing between the shelves of the modern three-dimensional warehouse is very narrow and high. The stacker works in this environment, which determines its overall structure is high and narrow. In order to prevent dumping, the stacker crane rail track is designed as an upper and lower double track, the lower ground rail plays a supporting and guiding role, and the upper sky rail can support the stacker to stand upright. Walk to ensure that no dumping accident occurs.
The tall and narrow structure also causes the stacker to have insufficient rigidity along the height direction, and the vibration is severe during the start-stop process, which will prolong the positioning time, affect the efficiency, and cause the stacker to be inaccurate in positioning and unable to work normally. In order to reduce the impact of insufficient stiffness, the dynamic stiffness of the mechanism should be paid great attention to in the design of stacker cranes.
According to the traditional gantry structure, stackers can be divided into double-column track stackers and single-column track stackers:
(1) Double-column track stacker crane
double deep stacker crane
The double-column track stacker consists of two columns, an upper beam, a lower beam, and a cargo platform with a fork. The column, the upper beam, and the lower beam form a rectangular frame, generally called a frame. The biggest advantage of this kind of stacker is that the strength and rigidity are relatively good, it can start and stop quickly, break, and run smoothly. Generally used in three-dimensional warehouses with high lifting height, large lifting weight, and high horizontal running speed, the disadvantage is that the self-weight is large.
(2) Single-column track stacker crane
single deep stacker crane
The frame of the single-column track stacker consists of a column, a lower beam, and an upper beam. Columns are mostly made of profiled steel or welded, and guide rails are attached to the columns. The whole machine is light in weight and consumes fewer materials, so the manufacturing cost is relatively low, and the rigidity is slightly poor. Due to the eccentric effect of the cargo platform and the goods on the column, as well as the horizontal inertial force generated during walking and braking, the single-column tracked roadway stacker has greater limitations in use. It is not suitable for stacker cranes with large lifting capacity and high horizontal running speed.
