Exciting mechanism

The utility model discloses a shock excitation mechanism, which belongs to the technology field of a roller vibrating device. The utility model comprises a left and a right vibrating cases composed of a left and a right vibrating shafts, a vibrating case shell and a vibrating case end cover, a left and a right box shaped eccentric bodies composed of a fixed eccentric block and an end cover, a movable eccentric block, a stop block, and an auxiliary block are arranged in the eccentric bodies, the end part of the left vibrating shaft is provided with a driving spring shaft joint. The utility model is characterized in that the left and the right vibrating shafts are connected through a middle spring shaft joint; the installation sites of the vibrating case shell and the vibrating bearing of the vibrating case end cover are respectively provided with four reinforcing ribs symmetrically, quartering the whole circle. Four oil holes and four grooves are arranged symmetrically on the bearing end cover in the vibrating case shell, and the eccentric bodies are filled with silicon oil. The utility model effectively solves such technology problems as the rigid strike of the eccentric block, and the rigid connection and the splash lubrication method of the left and the right vibrating shafts of the existing technical shock excitation mechanism keep the roller shock excitation mechanism under a high temperature condition.