Impact Crusher Development History

Impact crusher development history can be traced back to nineteenth Century 50 years, when the world's first impact crusher was born in USA, soon after with the development of productive forces, impact crusher has been unable to meet the need, crushing technology and, based on the jaw crushing machine, people also designed crusher machine.

In 1924, the Germans first developed attack type single, double rotor two types of crusher, crushing machine structure that is similar to the modern cage crusher, because no matter from the structure, or from the principle of work analysis, it has the characteristics of crusher counterattack. Because the material need repeated impact, crushing process can be free to stop discharging, but due to the feeding intensity and impact crusher capacity constraints, the model gradually transformed to squirrel cage crusher, used in hard look fine.

By 1942, the German Andreson in hammer summarized the squirrel cage crusher broken basic structural characteristics and working principle of the machine, invented and modern crusher structure similar to the AP series impact crusher. Thanks to the crusher's production efficiency is relatively high, can handle compared to the material, and it is in the form of the structure is relatively simple, easy to move, so, this kind of impact crusher has been developing rapidly. With the further development of crushing and screening crushing theory and the improvement in technology, a variety of high performance counterattack crusher also emerge in an endless stream, foreign production of impact crusher manufacturers have American relatively well-known Cedar IDS (formerly Iowa machinery company), Sweden Svedala, Finland Nordbe pen company, Dragon of France and Rover of Spain company, Germany Hazemag, KHD, UPP, Japan Kawasaki heavy heart, etc.. The counter - Spain Rover company crusher has a very wide range, from coarse crusher to sand crusher, a total of eight series, nearly a hundred kinds of specifications. The structure of one's own knack in. According to the company's experts: pieces of hard rock crusher, hammer blow plate service life of up to 3 to 6 months. Another recent German Hazemag&EPR company to counterattack crusher developed a new HazemagSQ type rotor. The rotor is opened, the fixed plate is embedded in the groove. The striking plate can be inserted from the upper side or a fixed plate, wedge fixed. The striking plate combines the advantages of S type and Q type blow striking plate plate, can be a head to use, improve the utilization rate.

At the same time in order to enhance the mobility of crusher crusher also developed wheel and crawler mobile crusher station, the wheel type in America is popular, the crawler is popular in europe. In fact, counterattack crusher in Chinese development relatively late, to the last century 50's, our country really has the crusher, so to say, crushing and screening equipment in China are mostly 50 years came. Before the 80's of last century, our domestic crusher is limited to the processing of hard materials such as coal and limestone.

Until the late eighty's our country to introduce the KHD type hard rock crusher, to fill the domestic blank. But behind abroad for more than 20 years. Homebred hard rock crusher, beginning its core parts plate hammer dependence on imports, domestic plate hammer in "eight five" period as a ministerial level scientific research projects, the success of the project, the domestic plate hammer not only replace imported, and has been exported to Europe and the United States, Japan and other countries. Wear resistant materials breakthrough, the hard rock crusher be a tiger with wings added. For example: the Ministry of transportation to improve the quality of highway construction in our country, has put forward concrete stone crushing station research projects, and included in the national "eight five" project. The project trial production equipment at a construction site in the Northeast use failure. And users to switch to hard rock crusher after the production of stone, in full compliance with the requirements of freeway antiskid pavement concrete. So hard rock crusher reputation. Liaoning province traffic hall had to have the equipment, bidding for highway construction as necessary. According to statistics, in the national various provinces and cities in highway construction are the hard rock crusher as pavement material preparation equipment, to break the compressive strength of 300MPa basalt, andesite and other hard material, and achieve the graded stone below 19.6mm. The percentage flakiness content is less than 10%. There are currently more than 400 units in use across the country, not only solved a problem in expressway construction, but also blocked the import.

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