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轮式液压起重机变幅机构三个铰点的设计,不但对变幅传动系统设计具有重要意义,而且对于起重机的总体设计和工作情况也有着不可忽视的影响。笔者就下支点A的轨迹及其作图法;前支式与后支式的分界点;前支式与后支式的铰点三角形是否相同等几个问题提出如下看法与大家共同讨论。
The design of the three hinge points of the luffing mechanism of wheeled hydraulic crane not only has great significance for the design of luffing transmission system, but also has an important influence on the overall design and working condition of the crane. The author on the fulcrum A trajectory and its mapping method; the former branch and branch after the cut-off point; before and after the support branch of the hinge triangle is the same as several issues such as the following comments with you to discuss.