The mechanism for cleaning the sieves of grain cleaning machines with oscillatory movement of the sieve mill

摘要

The utility model relates to agriculture, in particular to equipment for post-harvest processing of grain crops, and can be used in the chemical and mining industries for the separation of bulk materials. The mechanism comprises a cleaning device in the form of a movable platform with brushes and a drive, the brushes are mounted on a spring-loaded lever mounted on the platform with one end pivotally and the other with a cable and blocks, one end of the cable fixed rigidly to the sieve mill and the other to a fixed frame grain cleaning machine using a tensioner. The platform displacement drive is made in the form of a cylindrical linear induction motor with a stator with the number of pole pairs less than or equal to four and equipped with a control unit with platform position sensors, the stator is mounted movably on a fixed frame, and the rotor is connected movably to the platform. The device provides a simplification of the drive, improving the reliability and efficiency of the mechanism for cleaning sieves.