【正文】 裝載機發(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 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。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 advanced level for the time . Basically represent the first generation of wheeled loading the basic structure. The aircraft in the overall performance of dynamic, and insertion force a rise of power and flexibility, manipulation of light, the higher operating efficiency of a series of advantages. 1978, Heavenly Creations by the Department in accordance with the requirements of machinery, worked out to LIUGONG Z450based type of wheel loaders 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 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 loader marketing power. Prospect of small loader For a long time, small loader always been neglected in the status of a government department, not to regulate the management of the industry, wellknown businesses loader products is dismissive. However, these did not affect small loader (hereinafter referred to small equipment) rapid development, and now with a small market despite its huge market demand has attracted such as the Long renowned engineering machinery enterprises to participate in the petition, the main battlefield in the rural areas with the small size of the market, sales have already reached 4 ~ 5 million, more than 200 brands to participate in market petition. But small market can be said to be installed speed expansion disorderly petition coexist. How to achieve industrial upgrading is placed in front of the small equipment industry must resolve a problem. Lack industry attribution Compared with large and mediumsized industries loaders, small with the development of the industry can use plan to describe, not only gove