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Development history of bulldozer
Bulldozer was successfully developed by American Benjamin Holt in 1904. It is formed by installing a human bulldozer in front of a crawler tractor. The driving force at that time was the steam engine. Later, the crawler bulldozer driven by natural gas and gasoline engine was successfully developed, and the bulldozer blade was upgraded from manpower to wire rope. 193 1 year, the first batch of 60 diesel bulldozers were successfully rolled off the assembly line. With the continuous progress of technology, the power of bulldozers has been all diesel engines, and the bulldozer and scarifier are all lifted by hydraulic cylinders. In addition to crawler bulldozers, there are also tire bulldozers, which appeared about ten years later than crawler bulldozers. Because the crawler bulldozer has good adhesion and can exert greater traction, the variety and quantity of its products far exceed those of tire bulldozers at home and abroad. Internationally, all bulldozers are driven by hydrostatic pressure. After more than ten years of research and development, 1972 launched a prototype, and 1974 began mass production of hydrostatic drive crawler bulldozers.

After the founding of New China, China began to produce bulldozers. Initially, bulldozers were added to agricultural tractors. With the development of national economy, large-scale mines, water conservancy, power stations and transportation departments have an increasing demand for medium and large crawler bulldozers. Although the manufacturing industry of medium and large crawler bulldozers in China has made great progress, it can no longer meet the needs of national economic development. Therefore, since 1979, China has introduced the production technology, process specifications, technical standards and material system of crawler bulldozers from Japan and the United States. After digestion, absorption and key technology research, the pattern of Komatsu technology products was formed in the 1980s and 1990s.

Since the 1960s, the number of domestic bulldozer manufacturers has been stable at about four, because the processing requirements of bulldozer products are high and difficult, and mass production requires a lot of investment, so general enterprises dare not set foot in it easily. However, with the development of the market, since the Eighth Five-Year Plan, some large and medium-sized domestic enterprises began to run bulldozers concurrently according to their own strength.