1、 毕业论文外文翻译 题目 : 装载机国内现状与市场开发之分析 专 业 ： 机械设计制造及其自动化 班 级 ： 机 升 111 班 学 号 ： 110614121 姓 名 ： 侯 家 奎 指导教师 ： 李 乃 坤 1 Domestic Market Present Situation And The Development Of The Excavating Loader Analysis The loader digger is so called “two favour”. Because it has special structure, loads device being the he
2、ad and the equipment for the excavation behind. in the workplace , you need to turn the chair, completing the change from loader to the excavator loader digger is mainly used for the highway construction and protect of the city and village, the electric cable build, electric power and airport engine
3、ering, municipal services construction, farmland irrigation construction, village residence construction, opening mountain to take stone and various small scaled and multi-function engineering machine, generally used in the small project after the completion of the big ones. FIRST: A CLASSIFICATION
4、OF THE LOADERDIGGER The loader digger is so called “two favour” having two kinds of funcitions of lading and scooping out in the meantime. The classifications are as fallows ONE: from the structure According to the structure, loader diggers have two kinds of forms: one is with oblique tones move fra
5、me, the dinging device can be moved with side, which is easy to work in the special place, the center of gravity is lower when it transports. It is advantageous to loading and transporting. The weakness is: because of the restriction of the structure, the ground jack usually adopts vertical leg. The
6、 supporting point is within the wheel edge, the distance of the two supporting point is relatively small. While scooping the whole machines stability is bad. ( especially the scooping device moves to one side). The functional main point of this kind of machine is in the aspects of loading, producing
7、 more in Europe ； the excavation device of the latter cant move to side, the whole excavation device can make 180 turn-over through the rotary supporting, the ground jack is like the frog leg, the supporting point can stretch outside side the wheel, the stability is good when excavating, which is ad
8、vantageous to the exaltation of with excavation ability. Because having no oblique tones move frame, the cost of the whole machine is lower. The weakness is the bucket hangs at the trucks tail, the size is long, when the locomotive is in conveyance and loads, the stability is bad , which has certain scooping, with the US producing most. TWO: from the motive allotment From the motive allotment, the loader digger has two kinds of forms: two-wheel(rear-wheel) to drive and four-wheel(whole round)to drive. the former cant
