机械毕业设计外文翻译---装载机发展概况

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1、 装载机发展概况 Abstract This paper have discussed s.s. ZL-50 type fork-lift 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 ADA

2、MS 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

3、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 fork-lift truck the 3 kinds of typical schoolwork operating

4、 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: Fork-lift truck 、 fictitious pro

5、totype , build mould, emulation, optimization、 production efficiency Loader Development Chinas modern 20 wheel loaders began in the mid-1960s of the Z435. The aircraft as a whole rack, rear axle steering. After years of hard work, the attraction was the worlds most advanced technology wheel loader o

6、n the basis of the successful development of the power of 162 KW of shovel-fit wheel loaders, stereotypes for Z450 (later ZL50), and in 1971 December 18, formally appraised by experts. Thus the birth of Chinas first articulated wheel loader, thus creating our industry loader formation and developmen

7、t history. Z450-type 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 worlds advanced level for the time . Basically represent th

8、e 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 accordan

9、ce with the requirements of machinery, worked out to LIUGONG Z450-based 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 ZL50-based China ZL-wheel l

10、oaders series of standards, this is Wong loader on the development of Chinas 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 medium-sized

11、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

12、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. 2001 China loader industry-wide total sales have exceeded 30,000 Taiwan, the world load

13、er in the forefront of the market. Therefore, at present, China has become the worlds 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, well-known businesses l

14、oader 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 competition

15、, 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 competition. But small market can be said to be installed speed expansion disorderly competition coexist. How to achieve industrial upgra

16、ding is placed in front of the small equipment industry must resolve a problem. Lack industry attribution Compared with large and medium-sized industries loaders, small with the development of the industry can use plan to describe, not only government departments related to the absence of industrial

17、 policies or development plans, and to date, industry has not completely clear attribution, the reality of the small equipment industries across engineering machinery, agricultural machinery and construction machinery, the three industries of grey areas. Despite the small market with a flourishing,

18、but all small equipment manufacturers and dealers can dodge exists in the industry before the many obstacles to development. Small installed mainly refers to the rated load between 0.3 0.9 T products, also known as micro-loader. As industry ownership is not clear, with small products has been no uni

19、fied national technology and quality standards, the overwhelming majority of products are installed in the small-wheeled tractor developed on the basis of the. In addition small installed the product is currently used by the main component parts from tractors and light truck, not by the needs of sma

20、ll equipment for low-speed heavy-duty bridge, special bins key component parts, including even small projects with special tires. As a low technical content, resulting in a very low threshold of industry and become the de facto open industry, any person, business can be very easily installed into sm

21、all industries. Small enterprises have installed a number of fans, according to Construction Machinery Association Scraper Branch Secretary-General Chen Kai Yun, a conservative estimate at more than 200. More concentrated in Shandong Laizhou, Taian, Weifang, in Luoyang, Henan Province, Quanzhou, Fuj

22、ian Province, and other places, annual sales of more than 2,000 Taiwan enterprises with a small handful, the majority of small businesses with annual sales in 3200 by the following, with the production of small enterprises , the same easy to set up and close down. It is precisely because the strengt

23、h of small enterprises with very limited products without high technology content, in the vast majority of enterprises to participate in market competition are in the process of basically a single means to price competition to sell products for the purpose, without taking into account future market

24、things. In the common with the credit industry, services, brand competition means small industry basically not installed, in addition to differences in the strength of enterprises and product differentiation, marketing and management philosophy that is the deep-seated causes. Because users of the pr

25、oducts of small equipment to mainly rural users, and users can only cover rural farm machinery sales networks, construction machinery and construction machinery sales are only part of the network coverage in rural areas. And the sale of equipment similar, with small products also requires agents or

26、distributors can take the initiative to sell products to users and to users with standard and thoughtful service, and farm machinery dealers more customary sit shop operator, has no sales force, There is no specialized service teams, more difficult to expect the market planning, customer management.

27、 Construction machinery dealers and farm machinery dealers also have a lot of similarities, and engineering machinery dealers not accustomed to deal with rural users. Therefore, the small market is not mature with the sales network, to a large extent affected the market maturation process can not be

28、 achieved on the one hand, the user guide, on the other hand, can not be achieved on the manufacturers facilitating role. Operating environment and the use of the different habits, resulting in a lack of support for non-small pieces of installed products can hardly meet the actual needs of users, in

29、creasing the cost of services at the same time, improve customer satisfaction become almost impossible task. Increased market differentiation Unlike the preceding two years, with no small on the future of the market is basically no doubts. However, when the small rural installed by the new face of the