Small Tamping Machine And The Performance Comparison Of Various Types Of Impact Rammer - Small
60 years before the last century, our country is lack of small compaction machinery
, many small venues, largely artificial compaction compaction.The early 60s of last century, Changsha Construction Machinery Research Institute and Beijing Institute and other units Cooperation , In the mass based on the results of technological innovation with Chinese characteristics, summarized the invention of the breaststroke tamping machine, invented in 1962 by National Science and Technology Award. Frog Compactor simple maintenance, easy to use, quickly become the leading 60's compaction machinery products. According to incomplete statistics frog Compactor cumulative production reached more than 50,000 sets of economic construction in China has played an important role. After 70 years, frog Compactor gradually more advanced vibration performance Rammer And replaced by vibrating plates, frog Compactor currently very few, basically been eliminated.
1964, the Changsha Construction Machinery Research Institute has developed HB120 internal combustion tamping machine, starting from Shanghai Construction Machinery Factory production was mainly by Tsu Dongting Engineering Machinery Factory production, annual output of about 200. 80 years, internal combustion rammer product quality has improved greatly, has exported to Southeast Asia and Africa. After 90 years, producing internal combustion Compactor Sell Amount is gradually reduced, only a few small private enterprises.
1977, the Changsha Construction Machinery Research Institute and the Liuzhou Construction Machinery Factory has developed China's first HZR250 type and HZR70 type vibration plates, both of which were adopted in 1979 and 1982 organized by the Ministry of Construction identification. Then Yiwu construction machinery plant, construction machinery plant in Siping, Tsu Dongting Engineering Machinery Factory and a number of companies have begun producing vibrating plates. Changsha Construction Machinery Research Institute in 1986, has developed a large HZR450 type vibration plates. After 90 years of last century, vibration plates with rapid development in China, product varieties, specifications and manufacturers increase the vibration of the foreign plates have moved into the Chinese market.
1983, the Changsha Construction Machinery Research Institute and Hubei vibrator works jointly developed China's first HZR70 type of vibratory, 1984, passed the appraisal organized by the Ministry of Construction, 1985 Progress Award by Ministry of Science and Technology . As with vibratory compaction effective, high productivity, volume and weight of small, light and flexible prominent features popular with users, has been promoting the use of rapid and quickly developed into Zijiang Machinery Plant, Xinxiang third Machine tool Plant and machinery factory Tsu Dongting dozens of enterprises. Although vibratory plate compactor developed later than the vibration, but the pace of development, production and sales and use much more extensive than the vibrating plate compactor, tamping machine has become the largest production and sales of leading products. After 90 years of last century, foreign vibratory plates have moved into the Chinese market.
And vibration of vibratory plate compactor in the successful development of our country, not only for the building construction sector in China provides the performance of advanced compaction machinery, has achieved good economic and social benefits, but also to consolidate the mechanical technology to move ahead in China a big step, reducing the gap with the world advanced level, and promote China's small Compaction Machinery Development.
1, rammer and classification of the technical core
Rammer technical core is mainly reflected in three aspects:
A, Engine Because the rammer is a high-frequency vibration compaction equipment, poor working conditions, the seismic requirements of the engine is particularly high, there must be a strong anti-vibration rammer to match specific engine. As the power source rammer, general motors, GM Gasoline The earthquake resistance are poor, life will be very short. Some foreign rammer rammer manufacturers produce their own specific engine, but the parts cost very high, and supply a long period. The impact rammed the most current special Honda engine GX100, GX120 and Robin EH12 series gasoline engines, the engines are widely used, parts supply over a broad area.
B, shock springs, shock compaction of the impact of spring requirements, demanding spring steel with high fatigue strength, fatigue or loss of elasticity or yield break, the current electric rammer for cost considerations, the spring material Most of the common spring steel, and only one group of springs, so I decided to ram the impact of electric power and the impact frequency is not high, and spring break easily.
C, Dynamic Balance design, the impact of ram movement is mainly vertical reciprocating motion of high frequency, while the machine height higher, so the overall dynamic balance machine demanding, requiring specialized design and test for dynamic balance, Otherwise the machine will jump unstable and difficult to control, greatly increase the operator's labor intensity.
2, the pros and cons of electric rammer
Electric rammer by the motor as a power source, with the purchase of low cost, and low noise advantages. The disadvantages are: the impact of low frequency, 500 times per minute, normal spring material, one group of spring design and easy to break against the force is small, the impact force of 0.8 tons of low degree of compaction, requiring specialized equipment units, need to connect cables , and wire wear, cracking, likely to cause shock hazard, failure more easily delay the construction period.
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