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How to calculate and determine the specifications of heavy shelf columns

Port: 2020.02.21

Heavy-duty shelves are planned and designed according to user characteristics and needs, and it is critical to determine the columns in the early stage. I believe that everyone knows the importance of pillars for carrying goods on shelves. Good pillars can determine the results of goods storage in an enterprise. So, how to calculate and determine the specifications of heavy-duty shelves? Below, shelves give you a brief introduction.

I. Strength and Instability Check

Because the pillar is the main force component of the shelf, the structure is relatively complicated, and most of them use cold-formed thin-walled steel (the residual processing stress itself), and the load situation is also more complicated, especially for high-level shelves with many layers and affected The load is large, so that the design of the column is tedious, the check is complicated, and the fairness of the value is directly related to the safety of the structure.

Design check

The hole type usually adopts inverted figure, rhombus or inverted trapezoid, so that the long hole of the column has a small angle with the vertical direction. After the hook is hung, it is automatically locked under the action of the gravity of the cargo, and the hook is in surface contact with the long hole of the column , The force is better, which ensures more stable and safe use.

However, the opening of the hook hole has a great impact on the bearing capacity of the short column of the column. The bearing capacity after opening is 70% ~ 95% of the bearing capacity when the hole is not opened, and it has a greater impact on small-sized columns.

Therefore, under the premise of satisfying the load carrying capacity of the cross beam hook, the size and number of hook holes should be made as small as possible to improve the overall load carrying capacity of the shelf. There are many long holes (hook holes) and round holes evenly distributed on the front side of the column, which are used to hook the beams and install safety pins.

3. Beam mounting holes

From the perspective of the cross section, there are many cross-sectional shapes of the columns, but from the current market distribution, the mainstream profiles are still the basic type of stable shelves, some of which have relatively simple structures and are mainly used for lightweight shelves; The multi-sided rolling structure is relatively complicated and the processing technology is relatively complicated. It is mainly used for medium and heavy shelves.

Other shapes derived from the basic type are mainly to increase the bending on the longer side to improve the rigidity and instability of the column. In terms of detailed design, in addition to considering the strength, rigidity, and undisturbed structure, the impact of detailed molding processes on the hole shape and the pre-processing of the blank on the product quality should be considered, such as pre-punching and non-cooling. The influence of the bending deformation on the bending roller line on the product quality, the possible deformation of the pre-punching during the cold bending process, etc.

Under the conditions of ensuring the requirements of the dimensional tolerance and the hole distance, the design of the cross-section shape should take into account the requirements of different plate thicknesses, and the deformation should adopt a fixed bending radius.

Fourth, the cross-sectional shape of the column

The upright post is also a force-supporting component of the detachable shelf. Its design is the hub of the entire shelf system, which is directly related to the safety of the structure and the economy of use. Assembled shelves are mainly composed of basic pieces such as uprights, beams, and optional accessories such as corner protection, ground angle, spacer, barrier, and laminate (steel or wood).

The upright post is the main force-supporting component of the shelf, with a large load of 21 tons. With the increase of the height of the shelf and the increase of the number of layers, the columns are heavily loaded, and most of them use cold-formed punched thin-walled steel. Certain processing stresses remain and the actual stress conditions are more complicated. Therefore, the design of the columns is selected to form the entire shelf The pivot of the system is directly related to the safety of the structure and the economy of use.

Heavy-duty shelves are an important carrier for enhancing warehouse access efficiency, and have been used more and more widely in various industries. Detachable shelves are also known as combined shelves. The height of the shelves can be adjusted arbitrarily according to the pitch, so that the space between the layers of the shelves can be adjusted arbitrarily with the size of the goods being placed. The advantages of high utilization rate, convenient manufacturing, interchangeable assembly, and short installation cycle have become a widely used type in shelves.

We are a professional storage solution company in China that integrates R & D, design, manufacturing, installation and commissioning. The quality of the shelf products is guaranteed, the design scheme is novel, and the service is in place. The products are spread across all walks of life. According to the actual situation on the spot, with a perfect design scheme and professional installation team, users can have more storage space in the same warehouse space. Higher storage rates help customers across the country and around the world to solve storage problems.