A screening machinery vibration source mechanism

The utility model relates to a screening machinery technical field, especially relates to a screening machinery vibration source mechanism that provides reliable exciting force for the screening machinery. The utility model technical scheme realizes like this, a screening machinery vibration source mechanism, and contains a motor, a transmission shaft, and the transmission shaft passes through the self-aligning bearing to be installed on a bearing frame, and the characteristic lies in that the motor passes through flexible coupling joint with the transmission shaft, just sets up and has fixedly installed the eccentric block on the transmission shaft. The beneficial effect of the utility model is, changes traditional tooth-like kind of drive, and the structure is simple, and the material saving consumes the low carbon and novel, and the noise is little, and the life cycle is long, maintenance convenience, high efficiency.