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Impact Crusher trends

impact crusher history dates back to the 19th century 50's, when the world's first jaw crusher was born in the United States, soon with the development of productivity, jaw crusher crushing technology can not satisfy the need, so in the jaw crusher, based on the people and design a crusher. In 1924, the Germans developed the first single, two models of dual-rotor impact crusher, the crusher of the structure was similar to the modern squirrel cage crusher, because in terms of structure, or from the working principle of , which all have the characteristics of impact crusher. The impact of the material requires repeated, crushing process can be free and unobstructed discharge, but due to the material strength and crusher of capacity constraints, the model gradually transformed to cage-type crusher, used in hard look at the crushing. By 1942, the German Andreson summed up in the cage crusher hammer crusher working principle of the structural characteristics and on the basis of the invention and modern Crusher structure similar to the AP series of Impact Crusher. Benefit from this crusher production more efficient, can handle the comparison to the material, and its structure is relatively simple in form, easy to move, so, this crusher has been developed rapidly. With the crushing and screening and crushing theory of increasingly sophisticated technology, further development of a variety of high-performance crusher is also emerging, production abroad crusher manufacturers more well known that the United States Cedar ids Company (formerly Iowa Machinery company), Sweden Svedala, Finland Nordbe pen company in France and Spain Rover Dragon, Germany Hazemag, KHD, heart upp company, Kawasaki Heavy Industries of Japan and so on.

    Rover company in which the Spanish Impact Crusher has a very broad range, from the crushing impact crusher to the sand crusher, a total of eight series, nearly a hundred specifications. The structure has unique. According to the company's experts: the broken with the hard rock crusher, hammer against board a life of up to 3 6 months. Another recent German Hazemag & EPR for its crusher developed a new type of HazemagSQ rotor. For the opening of the rotor type, the rear fixed plate embedded in the groove. Against the side board or fixed plate from side to insert, with a wedge fixed. Integration of the S-combat board panels and Q-type fight against the advantages of plate may be adjusted once the first use, increased utilization. At the same time in order to enhance the mobility of crusher also developed other wheeled and tracked mobile crushing stations, wheel-type crusher more popular in America, tracked more popular in Europe.

    In fact, crusher relatively late development in China, to the 50s of last century, our country really has a broken machine, so that the crushing and screening equipment in China, mostly 50's came out. 80 in the last century, we made the crusher limited to dealing with coal and limestone and the like in hard materials. Until the late eighties the introduction of KHD type of hard rock crusher, fill the gaps. However, more than two decades behind foreign countries. Made of hard rock crusher, at the beginning of its core components board hammer dependence on imports, domestic plate hammer in the "Eighth Five-Year" period as a scientific research project level, project success, not only to replace the import of domestic plate hammer, and has been large exports to Europe, Japan and other countries. Wear-resistant materials breakthroughs have led to even more powerful hard rock crusher. For example: Ministry of Transportation to improve the quality of highway construction, raised pavement concrete stone crusher station research projects and included in the national "Eighth Five" research project. Trial equipment of the project site in the northeast use of a failure. The user to switch to hard rock crusher after the production of stone, in full compliance with anti-skid pavement concrete highway requirements. So the reputation of hard rock crusher boosted. Liaoning Provincial Communications Department once had this equipment, road construction as a tender to undertake the necessary conditions. According to statistics, the construction of roads in the provinces and cities nationwide have adopted in the hard rock crusher stone preparation system equipment as a road to breaking strength of 300MPa basalt, andesite and other hard materials, and meet the following gradation 19.6mm stone. The percentage flakiness content of less than 10%. There are currently more than 400 units in use around, not only to solve a problem in highway construction, but also blocking imports.

 

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