On The Motion of a Skew Conveyor Module
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Abstract
The interest in simple but specialized conveyors, capable of laterally transporting objects, is motivated by the ever-increasing use of package sorting facilities. The present study investigates the motion of a platform with a skew-hinged roller, the platform being pulled in translation with constant velocity. The study is progressive in complexity: a kinematic study based on pure rolling motion is followed by a steady-state dynamic study taking into account the sliding friction force and the two rolling friction moments. The dynamic aspect is also investigated considering a typical sliding friction coefficient decreasing with increasing local sliding velocity. The main results are the optimal fixing angle of the roller shaft for maximum lateral displacement, as required by the users of such devices. The kinematic optimal angle is corrected following the dynamic analysis, and the influence of sliding and rolling friction coefficients is clearly emphasized. The possible oscillations of the roller are also discussed.
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