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海洋废弃平台桩基拆除绳锯机是一种近年发展起来的新型水下作业机具，它主要由绳锯机本体和液压控制系统构成，绳锯机夹紧瓣上的夹紧齿可以使绳锯机安全、稳定地工作。介绍了夹紧齿的结构，分析得到了夹紧齿尺寸和齿周过渡曲线的优化数学模型，采用有限元法优化得到了夹紧齿关键参数。根据优化结果设计制造了夹紧齿，实验结果表明：该夹紧齿能够满足要求，为绳锯机的安全稳定工作打下了一定的基础。“,”Offshore discarded platform piles removal wire saw is a new underwater work tools which is developed in recent years. Its main structure includes the wire saw body and a hydraulic control system,the clamping teeth of clamping flap can make wire saw safely and stably work. Clamping teeth structure was described,the optimization mathematical models of clamping tooth size and tooth transition curve were obtained by analyzing,and the clamping tooth key optimization parameters were derived using the finite element method. Clamping teeth was designed and manufactured according to the optimization results. The experiment result shows that the clamping teeth is able to meet the requirements,which lays foundation for the security and stability of the wire saw.