目的 对多节伸缩装车机的输送运动和伸缩运动进行相关计算理论的研究，方便进行关键部件的选型，保证选型的正确性。方法 以伸缩装车机的结构为基础，结合现有的相关研究理论，分析多节伸缩装车机输送带驱动辊筒圆周力的组成部分，得出输送带驱动辊筒圆周力的计算方法；以机架伸缩运动原理为基础，对伸缩装车机各级伸缩部分进行受力分析，得出伸缩驱动力的计算方法；以某伸缩装车机产品为例，结合SolidWorks motion模块仿真结果，对计算方法进行验证。结果 验证结果表明，通过输送带驱动辊筒圆周力和伸缩驱动力计算所得的驱动电机功率与产品一致。结论 伸缩装车机输送运动和伸缩运动相关参数计算方法可行，结果正确，在伸缩装车机的研究中有一定的参考价值。

The work aims to study the relevant calculation theory of conveying motion and telescopic motion of multi-section telescopic loader to facilitate the selection of key components and ensure the correctness of the selection. Based on the structure of telescopic loader and combined with the relevant existing research theories, the components of the circumferential force of conveyor belt driving drum of multi-segment telescopic loader were analyzed, and the calculation method of the circumferential force of conveyor belt driving drum was obtained. Based on the principle of telescopic motion of frame, the force analysis of telescopic parts of telescopic loader at all levels was carried out, and the calculation method of telescopic driving force was obtained. Taking the product of a telescopic loader as an example and combined with the simulation results of SolidWorks motion module, the calculation method was verified. The results showed that, the power of the driving motor calculated by the circumferential force and the telescopic driving force of the conveyor belt driving drum was the same as that of the product. The calculation method of parameters related to conveying motion and telescopic motion of telescopic loader is feasible and the results are correct. It has certain reference value in the research of telescopic loader.