【正文】 ders series of standards. The development of standards, with reservations Z representatives loaders, L replaced by 4 on behalf of wheel, for ZL50 to Z450, it is so developed a LIUGONG ZL50based China ZLwheel loaders series of standards, this is Wong loader on the development of China39。s most advanced technology wheel loader on the basis of the successful development of the power of 162 KW of shovelfit wheel loaders, stereotypes for Z450 (later ZL50), and in 1971 December 18, formally appraised by experts. Thus the birth of China39。 外文資料翻譯 學(xué)生姓名： 專業(yè)班級(jí)： 機(jī)械 設(shè)計(jì)制造及其自動(dòng)化 04 級(jí) 2班 指導(dǎo)教師： 2021 年 6 月 裝載機(jī)發(fā)展概況 Abstract This paper have discussed . ZL50 type forklift truck mainly overall fictitious prototype design as well as some kinds of typical schoolwork operating modes imitate and emulate , include equipment and the overall parts needed build mould. In this design course, have applied ADAMS software and the software of PRO/ENGINEER. ADAMS software is used in the emulation of some kinds of schoolwork operating modes, and the software of PRO/ENGINEER is used to build mould mainly. Through the simulated emulation for some kinds of overall schoolwork operating modes, can see relatively distinctly the overall possible condition in actual schoolwork course that met , can in time modify , have reduced actual design time , have raised production efficiency. The innovation of this design Zhi is in in, imitate and have emulated forklift truck the 3 kinds of typical schoolwork operating mode in actual schoolwork, is effect again have imitated in actual schoolwork the hydraulic impact of use, so when being helpful to solve actual loading, the actual problem of meeting the stock that is hard to uninstall can so raise production efficiency. Key words: Forklift truck 、 fictitious prototype , build mould, emulation, optimization、 production efficiency Loader Development China39。s modern 20 wheel loaders began in the mid1960s of the Z435. The aircraft as a whole rack, rear axle steering. After years of hard work, the attraction was the world39。s first articulated wheel loader, thus creating our industry loader formation and development history. Z450type loader with hydraulic mechanical transmission, power shift, Shuangqiaoshan drive, hydraulic manipulation, articulated power steering, gas oil Afterburner brake wheel loaders, and other modern, the basic structure of the world39。s a major turning point. The standard was worked out by the industry after the division of labor, LIUGONG Xiamen ZL40 the manufacture of the large and medium wheel loaders, as workers, to the following small and mediumsized manufacturing ZL30 wheel loaders, and gradually formed a LIUGONG Xiamen workers, and 10% for workers at the loader to four backbone enterprises. To the late 1970s, early 1980s loader manufacturing enterprises in China has increased to more than 20, China has initially formed the loader industry. So far, China has developed wheel loader to the third generation, but the basic structure is still the Z450 (ZL50) evolved from. Change is not a very large second generation, third generation of some larger changes. 2021 China loader industrywide total sales have exceeded 30,000 Taiwan, the world loader in the forefront of the market. Therefore, at present, China has bee the world39。s largest equipment manufacturers licensing system, in terms of production quality suitable restrictions and improve the industry39。s basic functions, the Institute is held annually hundreds, and colorful academic conferences. Special is an annual Chinese Mechanical Engineering Society annual meeting, the topic is the integration activities of the various largescale prehensive meeting. , The main thrust of the report will include the General Assembly, the topic of academic, scientific and technological progress releases, forums, lectures, display, a number of activities such as presentation, rich in content, as well as inside and outside the country in the industry has had a tremendous impact. Editing, publishing and academic meetings and academic exchanges wings. Over the years, the anization has prepared a China Materials Engineering ceremony, and machine repair manual, such as hundreds of largescale tool, science and technology books and related materials. Academic journals published by the Journal of mechanical engineering, Chinese Mechanical Engineering, more than 60 species, and for promoting the development of academic disciplines has played an important role. Member Society is the mainstay of the Institute and the basis for the existence of the necessary conditions for achieving democracy Office will learn anizational guarantee. Member services is the Instit