50吨级汽车起机底盘关键技术研究.pdf

Study on the Key Technology of 50-ton truck crane A Dissertation Submitted for the Degree of Master Candidate：Xu Pingtao Supervisor：Prof. Yu Luping Chang’an University, Xi ’an, China 摘 要 汽车起重机是各种工程建设广泛应用的重要设备，在基础设施建设中发挥着重要作 用。随着改革开放的不断深入和国民经济的迅速发展，我国的基础设施建设力度正逐渐 加大，汽车起重机的市场需求将会大大增加。 本篇论文对汽车起重机底盘的总体结构进行了研究，利用当前阶段用于汽车起重机 的新技术和新的设计理念，对 50 吨级汽车起重机底盘进行初步的总体设计。本文还对 底盘的动力系统、传动系统、行驶系统、转向系统、悬架系统、车架等各子系统的设计 进行了分析，在总结了当前这些关键系统的在设计研发上已获得的成果的基础上，对50 吨级汽车起重机底盘各子系统都做了设计计算。 论文具体内容包括：按照相关标准设计了车辆底盘的主要尺寸，并根据车辆底盘总 体布置原则对底盘各个子系统和部件做出合理布置；采用双动力系统，以便获得更好的 燃油经济性和环境友好性；对离合器、变速箱、驱动桥、平衡悬架等各部件的相关参数 进行了计算；为了保证车辆理想的转角关系并避免转向系统与悬架系统的运动干涉，为 双桥转向系统建立了数学模型进行优化。 关键字：汽车起重机，底盘，总体布置，平衡悬架，双桥转向机构 I Abstract The truck crane is important equipment in various engineering construction, it plays an important role in the infrastructure. With the continuously deepening of reform and opening and the rapidly development of national economy, Chinas infrastructure construction is increasing year by year, market demand of truck crane will greatly increase. In this paper, the authors conducted a detailed study on the overall structure of the truck crane chassis, and make an initial overall design for 50-ton truck crane chassis by using new technologies and new design concept. The authors also conducted a detailed study on the power system, transmission system, driving system, steering systems, suspension systems, frame of the truck crane chassis, summarized the obtained achievement on the design of these key systems, made detailed design for each subsystem of the 50-ton truck crane chassis. The specific content of the paper included: Designed the main dimensions of the chassis in accordance wi