The Development of jaw Crushers in Modern Times
Posted: 2011 08 08 Source: Kefid Shanghai Machinery Views: 944
With gradual improvementand promotion of steam engine, electric motors and other power machinery,modern crushing machines were created. Steam-driven roller crusher was appearedin 1806; In 1858, American Blake invented jaw crusher to break rock; in 1878 gyratory crusher got good development in USA, whose productivity is higher than the jaw crusher with intermittent crushing action; 1895, another American William invented the lower energy consumption impact crusher.
Americans EW Black designed and manufactured thefirst jaw crusher in the world, with the structure of double toggle plate(simple swing). With the advantage of simple structure, easy manufacture,reliable, easy maintenance, small size and height, today they are still widely used to crush all kinds of hard, medium hard, soft ore and various materials,such as various minerals, solvents, slag, building stone, marble etc.
The working Principle of Jaw Crusher is: the motor transmitspower through belt, drives the moving jaw to do periodic motion towards the fixed jaw by the eccentric shaft. The angle between toggle plate and moving jaw plate increases when moving jaw moves. So the moving jaw moves towards the fixed jaw. The stuff will be crushed in this process. The angle between toggle plate and moving jaw decreases when moving jaw moves down, the moving jaw movesleaves fixed jaw by pulling rod and spring, the final crushed stuff will be discharged from the outlet.
Until 1980s, the feed size of large jaw crushing with the capacity of 800TPH has reached to 1800 mm. usually jaw crushers are divided into single and double toggle plates models. The movable jaw plate of the former one only makes simple arc swing when works, it is also known as simple swing jaw crusher; the latter also do up and down movement besides arc movement, which is also known as complex swing jaw crusher.
Kefid Machinery Co.,Ltd. is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing& screening plants and industrial milling equipments. We have been a leading manufacturer of jaw crushers and JC seriesjaw crushers for over 20 years.
We are always insisting on international advanced technical cooperation and communication,and introduce advanced technology from Germany, Swedish, Finland, and make digestion and absorption to improve our products' quality continuously. We keepthe service idea of "win-win cooperation and create more value tocustomers", with the times, persist in innovation to provide the high quality products, global service and advanced technology support for ourcustomers.
