挖掘机设计发展路线（Excavator design, development, route）.docVIP

挖掘机设计发展路线（Excavator design, development, route） As early as 1954, China had already begun production of mechanical excavator, the Fushun Heavy Machinery Factory (formerly Fushun excavator factory) the introduction of mechanical excavator W10012 and W5012 of the former Soviet Union and other international 30-40 years of products in twentieth Century. Due to the needs of the national economic construction and development of more than 10 production plants, 12 years to 1966 the country produced a total of more than 3000 sets of mechanical excavators, and continued production until the beginning of 80s. With the increase of Chinas introduction of foreign advanced technology of hydraulic excavator industry and domestic hydraulic excavator products and raise the level of performance, began phasing out has been produced for many years behind, heavy medium and small excavator. Chinas development of hydraulic excavator is the time from the beginning of 1967 (with the development of hydraulic excavator is almost the same time), early developed products are mainly Shanghai WY100 construction machinery factory, Guiyang mining machinery factory W4-60, Hefei mining machinery factory WY60 (before this, individual factories also tried to develop the hydraulic excavator, but for various reasons did not succeed). At the end of 70s to early 80s appeared in Changjiang excavator factory WY160 and the Hangzhou heavy machinery factory of WY250 hydraulic excavator. Throughout the history of development of hydraulic excavator in China in the past 40 years, can be roughly divided into the following stages: (1) development stage years): the development of Surveying and mapping in imitation of. Through years of unremittingly efforts to overcome the difficulties one by one, there are a few specifications of the hydraulic excavator finally achieved initial success, for the formation and development of Chinas excavator industry has taken an important step. (2) hydraulic excavator develop