铰接式车架在自行式建筑工程机械的设计中愈来愈广泛地被采用,但作为关键部位的铰点并未引起设计人员足够的重视,因而忽略了这方面的分析和计算工作。目前的教科书中也未深入涉及此内容。本文仅以常见的轮胎式装载机为例,试对车架铰点取一些典型工况进行分析,以供设计人员参考引用。至于其它机种的铰点受力问题也可依各自的不同工况,参照此法另行分析。装载机上各部件的重量及重心位置对连接前、后车架的铰点受力大小很有影响。因 Articulated frames are used more and more widely in the design of self-propelled construction machinery. However, hinges, which are the key components, have not attracted enough attention from designers, thus ignoring analysis and calculation in this area. The current textbook does not include this content in depth. This article only takes the common tire loader as an example, try to analyze the typical operating conditions of the frame hinge point for reference by designers. As for the problems of hinges of other aircraft models, they can be analyzed separately according to their respective conditions. The weight and the position of the center of gravity of each component on the loader have an effect on the strength of the joints connecting the front and rear frames. because