液压与气动的发展史（Development history of hydraulic and pneumatic）.docVIP

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液压与气动的发展史（Development history of hydraulic and pneumatic）.doc

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液压与气动的发展史（Development history of hydraulic and pneumatic）

液压与气动的发展史（Development history of hydraulic and pneumatic） I. development history of hydraulic and pneumatic Hydraulic and pneumatic transmission fluid as the transmission is a new technology based on seventeenth Century Pascal put forward the principle of hydrostatic pressure to drive the development, is a technology widely used in industrial and agricultural production. Today, the level of fluid transmission technology has become an important indicator of the level of industrial development of a country. In 1795, Joseph Braman (Joseph, Braman, 1749 - 1814) in London used water as a working medium and applied it to industry in the form of hydraulic press. It was the first hydraulic press in the world. In 1905, the working medium water was changed into oil, and further improved. After World War I (1914 - 1918), hydraulic transmission was widely used, especially after 1920. Hydraulic components began to enter formal industrial production in about 20 years in the late twentieth Century and early nineteenth Century. In 1925, Vickers (F.Vikers) invented the pressure balanced vane pump, which laid the foundation for the gradual establishment of modern hydraulic components, industrial or hydraulic transmission. At the beginning of twentieth Century Konstantin Nisk (G Constantimsco) carried out by passing theoretical and practical research on the fluctuation of energy; (1910 on the hydraulic transmission hydraulic coupling hydraulic torque converter etc.) contribution, so that these two areas of development. Three During the Second World War (1941 - 1945), 30% of the hydraulic machines used in American machine tools were hydraulic transmission. It should be pointed out that the development of hydraulic transmission in Japan is more than 20 years later than that in Europe and america. Around 1955, Japan developed hydraulic transmission rapidly and founded the hydraulic industry association in 1956. In recent 20~30 years, Japans hydraulic transmission development is fast, the