The causes for the chain plate deviation of Apron Feeder
a.In the process of coal feeding, the raw coal do not always distributed evenly along the center of the chain plate and the barycenter offset occur, for the various reasons, such as the different particle size of raw coal, the protean water content, the strong coal flow impact and the deflective coal feeding port etc. to make the chain plate off deviating in the process of coal feeding.
b.It will make the chain plate deviation if the upper and nether riding wheel can not keep parallel and create the axial force during installation or maintenance.
c.When replacing the upper and nether riding wheel, there will be an angle between the roller axis and the center line of chain plate if the upper and nether riding wheels are fixed at the position which is not perpendicular with rack center line. When the chain plate move forward, the axial force between the chain plate and the riding wheel which will make the chain plate deviation.

The solutions for adjusting the chain plate deviation of Apron Feeder
Practice has proved that the deviation of the chain plate is difficult to avoid completely under the complex production conditions. Only by changing the way of adjusting deviation, which makes the operation of adjusting deviation more rapid and reliable, and easy to operate, is the fundamental method to solve the problem of the chain plate deviation. Replacing the original nether riding wheel fixed on the fixed beam with the rotatable bearing and fix it at any angle by the additional leading screws and screw nuts. When the chain plate deviates, adjust it through hand wheel and the universal coupling. The fixed angle of the nether riding wheel will change and the force on the chain plate will change, the purpose of adjusting the chain plate deviation will be achieved in the end through adjustment. At the same time, the operation of adjusting the chain plate deviation will become more handy by changing the fixed direction of the hand wheel with the universal coupling.
Conclusion
It will not only reduce the labour intensity for worker, but also relieve the wear of components of Apron Feeder greatly, such as the riding wheel and the chain plate. This will make sure the material transport continuously, smoothly and regularly. And the benefit it brings is apparent broadly.