China's excavator production started late. In the early days of the founding of the PRC, the manufacturing enterprises copied the former Soviet Union's mechanical single bucket excavator in the 30-40's in the twentieth Century. In June 1955, the Fushun heavy machinery plant (predecessor of the Fushun excavator factory) was made into the first fully crawler crawler excavator in China, with a capacity of 1 cubic meters. In March 1959, Fu Chung introduced a 4 cubic meter mechanical excavator. The history of caress can be traced back to 1904. After the liberation of Fushun in 1948, it was transformed from the maintenance of mine machinery to the construction of engineering machinery. In 1953, it was named Fushun heavy machine factory, and in 1960 it was changed to the manufacturing plant of Fushun excavator. Since then, for the consideration of industrial layout, more than 10 state operated excavator factories have been set up in the whole country, and more than 3000 mechanical excavators have been produced by 1966.
In regard to hydraulic excavators, in October 1963, the Fushun excavator factory produced the first crawler hydraulic excavator in China, with a capacity of 1 cubic meters. Since then, a number of enterprises have developed hydraulic excavators throughout the country. The main 名媛直播 are type WY100 of Shanghai construction machinery factory, W4-60 type of Guiyang mine machine factory, and WY60 excavator of Hefei mine machine factory. After 70s, the WY160 excavator of the Changjiang excavator plant and the WY250 excavator of Hangzhou heavy machinery plant appeared again. They have taken a very important step for the formation and development of China's hydraulic excavator industry.
In the early 80s, with the development of economy, domestic excavators could hardly meet the market demand in terms of quantity and quality. Many excavator enterprises began to introduce the technology of German Liebherr (Liebherr) company, such as: Guiyang mining machine factory introduced Liebherr A912 and R912 type excavator, Shanghai construction machinery plant introduced R942 type, Hefei mine machine factory introduced A922 and R922 type, and the Changjiang excavator factory introduced R962, R972, R982 type dug. Excavate the machine. In a few years, the Hangzhou heavy machinery plant introduced the H55 and H85 hydraulic excavators of the German Demag (Demag) company, and the Beijing construction machinery plant introduced the RH6 and MH6 hydraulic excavators of the German O&K company. At the same time, Shandong Bulldozer General Plant, the Yellow River engineering machinery plant, Jiangxi Chang Lin machinery plant, Shandong Linyi engineering machinery factory, etc., combined with the introduction of the PC100, PC120, PC200, PC220, PC300, PC400 hydraulic excavators (except the engine) of the Japanese Komatsu manufacture.
After the introduction of technology, through the digestion, absorption and transplantation of the past several years, the performance indexes of domestic hydraulic excavators have been improved to the level of the early 80s, and the output of the 名媛直播 has been improved year by year. By the end of 1980s, there were more than 30 excavator factories in China, which formed six key enterprises, including Fushun excavator plant, Beijing construction machinery plant, Shanghai construction machinery plant, Hefei mine machine factory, Guiyang mine machine factory, Changjiang excavator factory and so on. The small and medium-sized hydraulic excavators have been formed in series, producing more than 40 kinds of machines, and having 12 cubic meters of 0.1-2.5 capacity, with an average annual output of about 1200 units. Each plant also produces 1-12 cubic meters of mine electric shovels, 1 cubic meter tunnel excavators, 4 cubic meters of long arm excavators, 1000m /h excavators, and water and land dual-use excavators with capacity O.4-0.8m.
But in general, the introduction of technology at that time mainly focused on the introduction of software such as product pattern and technology, and ignored the introduction of hardware such as processing equipment. Coupled with the management system, ignoring the host equipment. At that time, the construction machinery belonged to the two manufacturing systems of the Ministry of construction and the Ministry of machinery, of which the main engine of the hydraulic excavator belonged to the Ministry of construction, and the supporting parts belonged to the management of the mechanical department. Leading to long-term domestic supply of high quality engines, hydraulic components and other key components. Coupled with the problems of the main engine plant, by the beginning of 90s, the gap between China's hydraulic excavator and the world's advanced level has widened. At that time, the annual output of domestic excavators was only about 2100 units, and the annual import volume was as high as 6000 units (including a large number of imported second-hand excavators).
