Apron feeders is an important equipment for mining, metallurgy, port and chemical industry. For a long time, there is no unified and systematic theory for calculating the shear resistance at the feed opening and the frictional resistance between the material and the skirt plate in professional manuals, and some even contradict each other. The traction theory of plate feeders applied to inclined skirts has not been studied. A series of analytical solutions for the drag calculation are derived starting from the establishment of differential equations. This theory is of great importance for the design of large heavy pan feeders.

Analysis of traction resistance of inclined apron feeders

Domestic apron feeders were introduced from the design theory of it is still limited to the original simple calculation. In particular, the friction between the material and the material, the friction between the material and the skirt and the friction between the material and the bottom plate have not been studied by specialized scientific research forces for decades. Since the 21st century, some scholars began to study theoretically, but there are still many unsolved problems. As the heavy type in mining, metallurgy, chemical industry, ports and other industries have an irreplaceable and important role, the improvement of its theory is the inescapable responsibility of scientific researchers. In this paper, we study the theoretical laws of heavy plate from the perspectives of mathematics, bulk mechanics and tribology.
2. Analysis of pressure apron feeders inside the hopper
Vibratory feeders and belt feeders that perform similar functions are not able to withstand the bin pressure. In the actual process of mining and other industries Layout of the heavy plate are directly below the arrangement of the silo, is not set up inclined "bin neck", and sometimes more than 20 meters long length of the direction of the silo opening directly to the heavy plate. So the focus should be analyzed clearly the force situation, the pressure and friction analysis in the skirt pan.
3. The pressure and friction of the material in the inner part of the skirt plate under the silo can only occur when the chain pan has just started.When the chain pan is started, the maximum height of the material pulled out by the chain pan is the limit height. Under this mechanical model, the material in the section has no tendency to move downward, so there is no upward friction force given by the side plate, and the mechanical model of the literature shows that the material per unit length is subject to the upward friction force given by the side plate is wrong.
In the design of large apron feeders, as the running part and the resistance between the rollers and the tension and steering resistance are calculated very concisely and clearly, the remaining difficulty is the hopper resistance and the friction between the material and the skirt plate, and the friction has a great influence on the whole traction force, the study of this theory is very important for the design of large heavy plate feeder. When specific values are substituted, some formulas are difficult to calculate manually, which can be solved instantly with the help of Matlab. Due to space limitations, examples of specific test calculations will be given in future results, and other conventional resistances can be calculated according to the design manual.
Hoping this could be better for your understanding of the apron feeders.

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