The Composition and Crushing Principle of Jaw Crushers

Jaw crusher mainly consists of frame, supporting device, the working mechanism (fixed jaw plate and moving jaw plate), drive mechanism (eccentric connecting rod, thrust plate, flywheel and eccentric shaft), safety device and adjusting device of ore discharging port (wedge adjustment device, gasket adjustment device). The working parts of jaw crushers are two jaw plates. The first one is the fixed jaw plate (fixed jaw), vertically (or the upper end slightly camber) fixed in front of body wall, and the other mobile jaw plate(moving jaw) is located tilt and connected with fixed jaw to form the next upper big and lower small crushing chamber (working chamber). The mobile jaw plate moves towards the fixed jaw plate to do periodic reciprocating motion, sometimes separately and sometimes closely. During the Separation, the material going into the crushing chamber and the finished product is discharged from the lower port; when they are closed, the material is squeezed between the two jaw plates and broken by bending and splitting.
Breaking is a basic procedure during the preparation of raw materials and processing work, and its purpose is to control the particle size of the raw material to achieve the requirements of blast furnace smelting. Jaw crushers and cone crushers all can be used to break hard and medium hard ore and stones. And the structure of cone crusher mainly consists of frame, horizontal axis, moving cone, balance wheel, eccentric sleeve, the upper breaking wall (fixed cone), the lower crushing wall (dynamic cone), fluid couplings, lubrication system, hydraulic system and control system.
Jaw crushers have a variety of structural forms, but their working principle is the same, namely, by the periodical cyclical movement of the movable jaw to break materials. During the process of mobile jaw waving to the fixed swing plate, materials located between the two jaw plates would be crushed, split and bent.

Source: http://www.greenoptions.com/t/4402/the-composition-and-crushing-principle-of-jaw-crushers

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