Abstract: In response to the issues of significant vibration and inadequate stability encountered during the operation of the rigid chain system, first based on the force analysis of rigid chain meshing process, the intrinsic mechanism of insufficient work performance about the traditional tooth-shaped structure sprocket was critically examined. Consequently, a novel sprocket tooth profile characterized by "two arcs and one involute" was designed. Building upon this innovation, a Recurdyn dynamic model of the rigid chain system was developed, the influence of a new toothed structure sprocket on the dynamic characteristics of rigid chain systems was compared and analyzed. Subsequently, the newly designed tooth-shaped structure sprocket was integrated into a lifting system, and its performance was evaluated using metrics such as vibration acceleration. The findings indicate that under identical operating conditions, the implementation of the new tooth-shaped structure significantly mitigates vibration within the rigid chain system. This outcome not only validates the scientific rationale behind the design but also establishes a critical foundation for future optimization efforts in rigid chain systems.