液压起重机变幅机构三铰点的布置是整体设计时首先涉及的一个重要问题。这个问题可以分成两步来讨论:①三铰点自身几何参数的合理选择。②合理的三铰点参数确定之后,整体的布置问题。本文想就第一个问题进行探讨,分析影响三角形性能的因素及其影响方式,提出变幅机构三铰点实现优化设计的目标函数,并给出一个选择最优三铰点机构的实用的电算 The arrangement of the three hinge points of the hydraulic crane luffing mechanism is an important issue involved in the overall design first. This problem can be divided into two steps to discuss: ① three hinge point their own geometric parameters of a reasonable choice. ② After a reasonable three hinge point parameters to determine the overall layout of the problem. In this paper, we will discuss the first problem, analyze the factors that affect the performance of the triangle and how it will affect it, and propose the objective function to optimize the design of the three hinge points of the luffing mechanism. A practical electric grid Count