外文翻譯---現(xiàn)代起重機的特征和發(fā)展趨向

1、<p>　　Characteristics and Developmental</p><p>　　Tendency of Modern Cranes</p><p>　　With rapid development of modern science and technology, magnification of industrial production scale and

2、 improvement of automation level, application of cranes is becoming widespread and its function is obvious. Meanwhile, requirements for cranes are more and more strict. Especially, the widespread use of electronic comput

3、er technology spurs lots of subject-crossing advanced design approaches and accelerates the improvement of modern manufacturing and detecting technology. Fierce competition in</p><p>　　Our country is enterin

4、g global international competitive market at an unprecedented rate and crane manufacture is confronted with a new situation where opportunities and challenges coexist. Thus, it is crucial for cranes to develop and innova

5、te constantly. I want to make a brief explanation about characteristics and developmental tendency of modern cranes with examples, based on new theories, technology and trend of cranes at home and overseas.</p>&l

6、t;p>　　Make the key products large, high speed, endured and specialized</p><p>　　Because of continuous expansion of industrial production scale, increasingly improvement of production efficiency and rising

7、 proportion of money spending on loading and unloading and transporting materials in the process of production, required amount of large or high-speed cranes is increasing. Lifting quantities become larger, working speed

8、 becomes higher and requirements of energy-consuming and reliability become stricter. Cranes have already become a critical link in the process of automatio</p><p>　　At the moment, the biggest floating crane

9、 in the world weighs 6500t, chain crane 3000t and bridge crane 1200t. </p><p>　　Diversity of industrial mode of production and customers’ need makes crane market expanding and products renewing constantly to

10、 satisfy special needs with specific functions and bring its best usefulness into play. Functions of various kinds of cranes are improving. DEMAG ERGOTECH has developed a crane special for aircraft maintenance, which has

11、 made its own way into international market. This crane is great in length and lifting height and has accurate halt. When a flexible maintenance platform</p><p>　　2. Make series of production modularized, co

12、mbined, standardized and practical</p><p>　　Most cranes are produced by series and batch, thus use of systematic multi-objections entire optimization to design series of cranes has already become the key poi

13、nt in development. Through rational matching of series main parameter, its functions can be improved, manufacturing cost can be reduced, and degree of general purpose can be raised. Use less specification spare parts to

14、compose series production with multi-species and multi-specifications. And thus, the requirements of customers can be</p><p>　　By using modularized design instead of conservative entire design, we can make c

15、omponents with similar functions into standard modules which have various uses, similar connective key factors and are interchangeable. Through combination of different modules, we can make different kinds and specificat

16、ions of cranes. There are only several modules involved when it comes to crane improvement. To design a new style of crane, all that you do is to choose different modules to recompose. Because of impr</p><p>

17、;　　Bridge crane produced by DEMAG ERGOTECH considered carefully modularization and combination. It makes inter-parameter of series, entirety, mechanism and components matched with each other. The distribution of capacity

18、 obtains most economic and suitable effects. To make the main components of lifting mechanism reaches its largest general purpose, the method that the result of lifting weights multiplying lifting speed is a constant has

19、 been used. There are more specifications derived through chang</p><p>　　3. Make productions for general purposes small, light, simple and diversified</p><p>　　There are quite a number of cranes

20、 used in general workshop and storehouse, and thus they have light work and the requirement is not very strict. How to improve application of these cranes and to cut manufacturing cost is critical to win in the marketing

21、 competition. Considering comprehensive benefit, the need to decrease the height of cranes as low as possible, to simplify the constructions and to reduce weights and wheel pressure can also decrease structure’s height,

22、lighten structure composit</p><p>　　The needs of customers advance diversity of cranes. Series parameter scale of cranes expanding and functions enlarging, product of one machine for several uses will obtain

23、 further development to increase capacity of dealing with emergencies. The proportion of using wireless remote control under normal conditions will increase.</p><p>　　DEMAG ERGOTECH has formed standard crane

24、 series of light combinations after long period explosion and innovation. The whole series compose of various productions such as combination “工” style single beam, hanging case single beam, horn cart case single beam an

25、d case double beams. There are altogether fifteen forms of connection between main beam and end beam. This is suitable for needs of different structure and lifting goods. Each specification of crane has three single spee

26、ds and three double </p><p>　　現(xiàn)代起重機的特征和發(fā)展趨向</p><p>　　隨著現(xiàn)代科學技術的迅速發(fā)展，工業(yè)生產(chǎn)規(guī)模的擴大和自動化程度的提高，起重機在現(xiàn)代化生產(chǎn)過程中應用越來越廣，作用愈來愈大，對起重機的要求也越來越高。尤其是電子計算機技術的廣泛應用，促使了許多跨學科的先進設計方法出現(xiàn)，推動了現(xiàn)代制造技術和檢測技術的提高。激烈的國際市場競爭也越來越依賴于技

27、術的競爭。這些都促使起重機的技術性能進入嶄新的發(fā)展階段，起重機正經(jīng)歷著一場巨大的變革。我國正以前所未有的速度進入全球化國際競爭市場，中國的起重機制造業(yè)面臨著機遇與挑戰(zhàn)并存的新形勢。因此起重機的不斷發(fā)展和創(chuàng)新是關鍵?，F(xiàn)根據(jù)國內(nèi)外起重機的新理論、新技術和新動向，結合實例，簡要論述現(xiàn)代起重機的特征和發(fā)展趨向。 1 重點產(chǎn)品大型化、高速化、耐久化和專用化    由于工業(yè)生產(chǎn)規(guī)模不斷擴大，生產(chǎn)效率日