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History

History

History

The history of Chinese machinery refers to the history of the development of Chinese machinery. China is one of the earliest countries in the world for mechanical development. In ancient China, there were many inventions and creations in machinery, and they all had their own characteristics in the use of power and the design of mechanical structures. The design and application of many special machines, such as guide cars, ground motion meters and medium incense burners, are unique. In the modern times, especially since the early 18th century to the 1940s, due to economic and social reasons, the development of China's machinery industry has stagnated. In the past 100 years, it was the period of Western bourgeois political revolution and industrial revolution. The rapid development of mechanical science and technology far exceeds the level of China.

Small tamping machinery Before the 1960s, China's small tamping machinery was very scarce, and the compaction of many small venues was basically artificial tamping. In the early 1960s, the Changsha Construction Machinery Research Institute and the Beijing Institute of Civil Engineering and other units cooperated to sum up and invent the frog-type tamping machine with Chinese characteristics on the basis of mass technological innovations. In 1962, it won the National Science and Technology Invention Award. The frog type tamping machine has a simple structure, convenient maintenance and use, and soon became the leading product of China's tamping machinery in the 1960s. According to incomplete statistics, the cumulative output of the frog-type compaction machine has reached more than 50,000 units, which has played an important role in China's economic construction. After the 1970s, the frog-type tamping machine was gradually replaced by the more advanced vibration shock and vibrating plate ,. At present, the frog type tamping machine has been few and basically eliminated.

Internal combustion type tamping machine In 1964, Changsha Construction Machinery Research Institute developed the HB120 internal combustion type tamping machine, which was started by Shanghai Engineering Machinery Factory. It was mainly produced by Tianjin Dongting Engineering Machinery Factory with an annual output of 200 units. In the 1980s, the quality of internal combustion type tamping machines was greatly improved, and it was exported to Southeast Asia and Africa. After the 1990s, the sales volume of internal combustion type tamping machines was gradually reduced. At present, only a few small private enterprises produce. In 1977, Changsha Construction Machinery Research Institute and Liuzhou Construction Machinery Factory developed China's first HZR250 and HZR70 vibrating plate rafts. These two products were certified by the Ministry of Construction in 1979 and 1982 respectively. Subsequently, Yiwu Construction Machinery Factory, Siping Construction Machinery Factory, Anyang Vibrator Factory, Tianjin Dongting Engineering Machinery Factory and other enterprises began to produce vibrating plate rafts. In 1986, the Changsha Construction Machinery Research Institute developed a larger HZR450 vibrating plate. After the 1990s, vibrating flatbeds have developed rapidly in China, and the variety of products, specifications and production companies have increased. Foreign vibrating flats have entered the Chinese market one after another.