轮式装载机动力传动系统节能技术研究

发布时间：2018-03-05 08:19

本文选题：轮式装载机　切入点：动力传动　出处：《吉林大学》2011年硕士论文　论文类型：学位论文

【摘要】：目前ZL50轮式装载机的动力传动系统技术参数,是上世纪60年代的成果,50多年过去了,没有人对其进行过优化改进。近几十年,人们对装载机的研究主要集中在工作装置优化改进,结构件优化改进,覆盖件的造型设计以及驾驶室的舒适性改进,而对动力传动系统,只是在可靠性方面进行了较多的研究改进,而对动力传动系统的节能研究却很少。过去我国对工程机械的管理采用粗放式管理,排放和噪声要求都很低,燃油的经济性更是没有要求,因此工程机械存在着严重的能源浪费。 2009年,我国才‘开始分阶段施行工程机械排放法规。2010年,在北京召开的十一届全国人大三次会议和政协十一届三次会议上,倡导“低碳经济”。有能源和环保专家提出,中国从“十二五”要开始征收排碳税。在国家高度重视低碳的大环境下,研究工程机械的节能,具有重要的工程应用价值。本文根据国内装载机行业的实际情况,对轮式装载机动力传动系统节能技术进行了较为深入的研究,提出了一种通过改变发动机与液力变矩器匹配工作区域来提高燃油经济性及动力性的措施,并进行了理论分析和仿真优化计算。根据理论分析和仿真优化计算的结果,对发动机、变矩器、变速箱、液压系统、制动系统进行节能改进,对样机进行试制和性能测试,并与传统机型进行了对比,主要考核整机的节能效果,作业效率,整机热平衡,以及验证理论分析和实际工作的吻合性。试验采用多种特性匹配组合测试,采用计时称重以及电桥应变的方法,主要采用的仪器有INC3030车载测试系统、GG电子秤,拉力试验台等。本文的创新性改造,获得了较好的节能效果、较好的动力提升效果,具有普遍推广应用的工程应用价值。
[Abstract]:At present, the technical parameters of power transmission system of ZL50 wheel loader are more than 50 years after the achievement of -40s. The research on loaders is mainly focused on the optimization of the working device, the optimization of the structure, the shape design of the panels and the comfort of the cab, while the power transmission system, Only in the aspect of reliability has carried on the more research improvement, but to the power transmission system energy conservation research is actually very few. In the past, extensive management of construction machinery was adopted in our country. The requirements of emission and noise are very low, and the fuel economy is not required, so there is serious energy waste in construction machinery. In 2009, China began to implement construction machinery emission regulations in stages. In 2010, at the third session of the 11th National people's Congress and the third session of the 11th CPPCC National Committee in Beijing, we advocated "low-carbon economy." Energy and environmental protection experts proposed, China will start levying carbon tax from the 12th five-year plan. It is of great value to study the energy saving of construction machinery under the environment of low carbon. According to the actual situation of the domestic loader industry, the energy saving technology of the wheel loader power transmission system is studied in this paper. This paper presents a method to improve fuel economy and power performance by changing the matching working area between engine and hydraulic torque converter, and carries out theoretical analysis and simulation optimization calculation. According to the results of theoretical analysis and simulation optimization calculation, the engine, torque converter, gearbox, hydraulic system and braking system were improved in energy saving, and the prototype was trial-produced and performance tested, and compared with the traditional model. The energy saving effect, working efficiency, heat balance of the whole machine, and the consistency between the theoretical analysis and the actual work are mainly examined. The test adopts a combination test of various characteristics matching, a method of timing and weighing and the strain of an electric bridge. The main instruments are INC3030 vehicle test system GG electronic scale, tensile test bench and so on. The innovation of this paper has obtained better energy saving effect and better dynamic lifting effect, which has the engineering application value of popularization and application.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH243

【参考文献】