Uniform distributor of grain bin of harvester

A uniform distributor of a grain bin of a harvester mainly comprises a control unit, a drive unit, an auxiliary unit, a speed transforming transmission, a uniform-distribution packing auger and the like, and is characterized in that the control unit, which is mounted in the cab of a main machine, is connected with the drive unit through the auxiliary unit; the drive unit is connected with the uniform-distribution packing auger through the speed transforming transmission; and the drive unit, the speed transforming transmission and the uniform-distribution packing auger are mounted on the grain bin of the main machine. The main machine utilizes a gear pump to supply quantified hydraulic oil or electric power, a hydromotor or an electromotor mounted on the grain bin is driven under the control of the control unit, after the transmission system changes speed, drives the uniform-distribution packing auger to operate at an appropriate rotation speed, thus effectively uniformly distributing crops, so that the holdin