Various kinds of jaw crushers have been manufactured In the early years, the federal republic of Germany and USSR had researched the hydraulic jaw crusher with the characteristic of adding the moving times so as to improve the output, while the starting of adjustment of layout; the hydraulic overload protection is also equipped. Also the federal republic of Germany has manufactured impact jaw crusher, while the USSR has manufactured the vibrating jaw crusher, which is also called inertia jaw crusher. Both of them drive the jaw to crush the material so as to enhance the performance of jaw crusher.
Our country has a trail of impact jaw crusher, but it was stopped because of some reasons. German Democratic Republic has manufactured a jaw crusher with two cavities. U.S. has made the two pendulum cavities jaw crusher. A designing institute in Beijing cooperated with Hunan University designed the two cavities jaw crusher in a factory with its characteristic of making the discontinuous operation into continuous working so as to improve the efficiency. A designing institute has invented two cavities with two moving jaws crusher, which improves the working efficiency and lowered the load of crushers with a lighter crusher.
USSR has made a jaw crusher with two moving jaws. And Liaoning institute cooperated with a mine enterprise to develop a two moving jaws crusher with the designing characteristic of contraposition of two moving jaw without the former board. To make the same revolving of the two jaws, the exposed gear is added in the end of eccentric rotor. Because of its complex structure, a new type of two cavities jaw crusher suspended reverse on the single rotor. What’s more, an institute in Shanghai has also designed this new type crusher. Both of them have the characteristics of the synchronous running of the moving jaw, which make the crusher layout the materials. Thus it increases the output by the increased number of revolutions, while there is no comparative moving, which can reduce the wear and tear so as to increase the service life. In recent years, the single jaw crusher suspended reversely has been designed. U.S., England, Federal republic of Germany manufactured the Kue-Ken simple Jaw Crusher. And Shandong has imported this crusher and designed JC Jaw Crusher based on this. A kind of jaw crusher with the bracket on it was designed in foreign countries. Soon, some institutes and factories manufactured this crusher. A coal mine in Shanxi imported WB8/26 jaw crusher from Germany with the features of crushing the coal grains by the driving of connecting rod above the belt conveyor, which has a better efficiency.
All of this various jaw crushers has made some sound effects and boosted the crusher industry with high technology signature. The modern design methods cooperated with the machinery manufacturing craft are put into use. From each country’s research and invention of jaw crusher, the attention and value can have a reflection because of the high rise of market, which boost the revolution and invention of technology in crusher industry. And the jaw crusher’s own performance makes its value and importance in the crusher industry.