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徐州工程学院毕业设计(论文)摘要本文简要介绍了随车起重机的结构和特点，总体设计了随车起重机的性能指标以及关于各臂伸缩的原理计算。并对随车起重机的设计要点进行了简要说明。本文重点介绍了随车起重机伸缩部分的设计，变幅结构的设计和上车液压系统的设计。本次设计主要内容和要求：设计出具有一定重量的随车起重机完整的上车结构，绘制出上车装配图和每节臂的结构图。设计出上车液压系统，绘制上车液压系统原理图。通过分析和计算，确定每节臂的截面形状及截面尺寸，设计每节臂的具体结构和臂之间的连接方式，设计整个起重臂伸缩方式。并且设计随车起重机上车实现起重臂伸缩，变幅所需的上车液压系统，计算选择合适的泵，油缸及阀等液压元件。其中，以臂的设计最为重要，对此作为重点考虑。关键词：随车起重机；伸缩臂；液压元件；选型 AbstractThis article is briefly introduced with the vehicle the hoist crane structure and the characteristic, the system design with the vehicle hoist crane performance index as well as the principle computation which has expanded and contracted about various arms. And it has carried on the briefing with the vehicle to the hoist crane design main point. This article is introduced with emphasis the hoist crane expands and contracts the partial designs with the vehicle, the amplitude structure design and boards the hydraulic system design.This design main content and request: Designs has the certain weight the hoist crane integrity to board with the vehicle the structure, draws up boards the assembly drawing and each arm structure drawing. Designs boards the hydraulic system and the plan boards the hydraulic system schematic diagram. Through the analysis and the computation, I determined each arm the section size and the section shape, design each arm between the concrete structure and the arm connection way, the design entire erector beam book expansion and contraction way. And designs the hoist crane to board the realization erector beam to expand and contract with the vehicle, the amplitude must boards the hydraulic system, computation choice appropriate pumping, hydraulic pressure part and so on cylinder and valve Among them, thought especially the arm design is most important, regarding this I with emphasis considered.Keywords With the vehicle hoist crane Expands and contracts the arm Hydraulic pressure part ShapingII徐州工程学院毕业设计目 录1绪论11.1概述11.2随车起重机主要分类11.3选用随车起重机注意事项11.3.1随车起重机的起重工况11.3.2随车起重机的配置11.4国内外随车起重机的发展21.4.1国外随车起重机的发展现状31.4.2国内随车起重机发展现状51.4.3随车起重机的发展趋势62 随车起重机的性能参数112.1 性能参数112.2计算载荷与设计方法123 臂的设计143.1各臂长的计算143.2吊臂截面的选择153.2.1基本臂的设计223.2.2第二节臂的设计233.2.3第三节臂的设计253.3耳板及轴销的设计2