Parameters of the stabilizer of the poly-V belts of the drive of vertical spindles for stable cotton harvesting performance

Abstract

We have in our previous articles that the unstable cotton-picking performance of the vertical spindle cotton picker is mainly due to the instability of the traction force of the V-belts of the friction drive of the spindles. The main reasons for this result were identified. The main reason for the value of the total pulling force of the V-belts in the friction serial drivee, which is why, due to the resistance forces of the cotton bush, the speed of rotation of the spindle often decreases at the time of extraction of the cotton slice from the sash. Therefore, the authors recommended replacing conventional V-belts with poly V-belts, the small wedges of which are installed on one, i.e. a single basis. Our experiments have shown that with the same tension of external belts, the pulling force of a multi-V belt with five wedges is always much greater than a standard set of three conventional V-belts on a serial drive. Consequently, poly-V belts always ensure the optimum angular velocity of the spindle, preventing the reduction of the completeness of the cotton harvest, which is very important. To do this, it was necessary to find some technical solutions for such a drive to function smoothly, in particular, the installation of a spindle speed stabilizer by the time the spindle reversal process was completed before it hit the external belts. Spindle, i.e. its roller, after it leaves the inner belt, rotates by inertia. The stabilizer has a block with an elastic surface, which, pressing against the spindle roller with a certain pressure, slows it down until it stops before the roller hits the beginning of the external belts, i.e. before the start of its reverse rotation. This article describes the design and effects of the stabilizer for the spindle roller to stop it at the right moment.