Multi-level dual mass flywheel with inertia balancing mechanism

The invention discloses a multi-level dual mass flywheel with an inertia balancing mechanism. The multi-level dual mass flywheel comprises an initial flywheel, a driven disc and a secondary flywheel, wherein the secondary flywheel is uniformly provided with two compensating mechanisms and two balancing mechanisms. A coordinate system is established by taking the center of the initial flywheel as the origin of coordinates, molded lines of the inner edge of the initial flywheel are determined by a polar equation in the Ith quadrant of the coordinate system, molded lines in the IIth quadrant are with respect to Y-axis mirror image through the Ith quadrant, and molded lines in the IIIth and IVth quadrants are the mirror image with respect to X-axis through the Ith and IIth quadrants. The dual mass flywheel can not only satisfy a demand on small rigidity when the torsion angle is small, but also satisfy a demand on high resistive torque when the torsion angle is great. The resonance rotating speed is completely and effectively isolated outside a normal working rotating speed of an engine, and resonance of the system is avoided. When the rigidity is switched, the torsional rigidity is continuous, so that impact and noise generated by rigidity mutation are avoided, and the service life of all parts in a transmission system is prolonged.