《外文翻译--国自卸车》由会员分享，可在线阅读，更多相关《外文翻译--国自卸车（6页珍藏版）》请在金锄头文库上搜索。
1、附 录附录A.外文文献原文Chinese Mining Dump Truckby Zhang Wensheng1.GeneraI information of domesticmining dump truck sector Since the first Chinese-made mining dump truck was made in 1 969,over two decades have passed,during which,Chinas mining dump truck industry has primarily formed the capacity of producing
2、 20154 ton mining dump trucks.At present,the main manufacturers are as follows;Xiangtan Electric Manufacturing Group CorpLtd,North Hauler Limited Liability Company,Benxi HeavyDuty Truck Limited Liability Company.Changzhou Metallurgical Machinery Plant,Beijing Heavy Duty Truck Plant and so on,and the
3、 technologies for mining dump trucks have been introduced through multi-channels,such as the establishment of joint ventures and the co-operation in the way of combining technology and tradeMter digesting and assimilating the technologies introduced,China is capable of producing mining dump trucks w
4、ith load capacity of 154,108,85,77,65,50,40（4151）,32（3135）,27 and 20 tons,of which,the annual output of 20 t and over is about 4 500units. Now,about 11000 units of mining dump trucks are on service in domestic construction projects,such as mines,electric stations,railways and so on,about 45000 of wh
5、ich are domestic-made,mainly including 13JZ3364 model with load capacity of 20 tons（about 3 000 units）,BJZ 3480 model with load capacity of 27 tons（about 200 units）,3307 model with load capacity of 45 tons（about 600 units）and a small amount of mining dump trucks with load capacity of 77,85,108 and 1
6、54 tons respectively.The batch-produced BJZ 3364 which was self designed in the 1 970s based on the similar Trucks abroad is still at the intemational levels from the late 1970s to the early 1980s in terms of the basic structure and technical specificationsBJZ 3480 model truck,a localized one of RD
7、030 model truck introduced from British Aveling Bedfordis at the international level of around the 1980s.The 3307 and 3311 made by Baotou North Truck MFG CoLtda Sino-AmericanBritish ioint venture located in Baotou,nner Mongoliaare of the TEREX series products with a LCR of about 64and with the key a
8、ssemblies and parts out-souncedSo the technicallevel of these two models takes the lead domestically and goes advanced in the worldHowever, compared with the similar ones abroad,the home-made SF 3103 and SF 3150 models of 100 ton class motorized wheel mining dump trucks remain poorer in quality,and
9、their production is very small.2.Introduction of Mining dump trucksMining dump trucks are mainly used in various mines and earth sites.Because of their poor working conditions,low level road,and also frequent starting, braking and steering,heavy load,the external loads are complex.At present,designe
10、rs pay more attention to make the strength and rigidity of the dump truck and their components to meet various requirements,rarely consider their aerodynamic characteristics and aerodynamic design.It is reported that there are about 9000 mining dump trucks in China,general loads of them are more tha
11、n 20 t,and fuel consumption and pollution emissions have increased significantly.Due to the energy conservation and the demand for environmental protection,it is necessary to improve the fuel economy of dump trucks by reducing their aerodynamic drag. Mining truck is an ideal conveyance in large mine
12、s for its high efficiency and good economy,and tends to be larger.Now,the payload of main trucks abroad has been up to 360 tons,but internal manufacturers have not produced mining trucks over 200 tons.Owing to large weight and high speed of trucks and more cuwe and slope in mines,the system of steer
13、ing,brake and hoisting must be reliableHydraulic power steering,hydraulic hoisting and full hydraulic brake have been applied in mining trucksSo the safety of trucks and production has been affected by hydraulic system seriously.3.Profile of key manufacturers Of mining dump trucksBeijing Heavy Duty
14、Truck Plant,with 1 800 employees,is one that can msss-produce mining dump trucks with load capacity of 20 and 27 tons.Its leading product,BJZ 3364 mining dump trucks taking the lionS share in home market,are working for more than 100 clients engaged in hydropower projects and small& medium mines nat
15、ionwide with its population of 3000 unitsF0r example,in the world-Famous Three Gorges of Changjiang River project site Alone,over 400 units of BJZ3364 dump trucks are booming there.Its mining dump truck line includes BJZ 3364（with leaf spring）and BJZ 3364Q（with hydro-pneumatic spring suspension）with
16、 the load capacity of 20 t,27 t,BJZ 3480 of 27 t,BJZ 5360GSS nfining sprinkler,gallery operation transport truck,guniting vehicle and so on.North Hauler Limited Liability Company （NHL）,a Sino-British-American joint venture located in Baotou city of Inner Mongolia Au- tonomous Regions,has over 400 people in its workforce.and a land area of 110000 m2.With complete sets of equipment and processing facilities of heavy truck production line,
