The characteristics of the jaw crushers: deep crushing chamber with no dead zone, increasing feeding capacity and output; large crushing ratio, and uniform particle size; adjustable discharging port, reliable and convenient, increasing the flexibility of the device; safe and reliable lubricating system, easy to replace and maintain; simple structure, reliable operation and low operating costs; saving energy from 15% to 30% per machine, saving more than double per system; large adjustable range of discharging port, meeting the requirements of different users; low noise, less dust.
Based on an example of stone jaw crusher, a tooth-shape entity 3D model for a jaw plate and relevant analysis for mechanics, finite element analysis and rock fracture feature are present.
Those results are of a certain reference value for developing a model database of the jaw plate tooth-shape and improving or optimizing crushing mechanisms.
The main research points are those as follows: in order to enhance an crushing enginery of a jaw crusher and improve a granularity of crushing output grains, according to the working parameters and structure parameters of the jaw breakers, a first attempt is tried to inquire into and analyze a feature of fine and primary crushing for a rock which could set up a certain foundation of developing independently a modern squeezing type crusher which is of late-model’s, efficiency, energy conservative and environmental protective features.
A tooth-shape 3D entity model for a jaw plate model was established based on a software Pro/E.
In order to realize a three-dimensional and visual representation for a tooth-shape entity of the jaw plate and provide a rational and accurate tooth-shape model of the jaw plate which could be adopted in a finite element method.
According to the size of crushing materials, jaw breakers can be divided into course jaw breaker and fine jaw breaker.
The former is mainly used as primary jaw crusher of the large sized materials, and the produced materials are generally large, which are much suitable for the exploitation of large mine.
Naturally, the latter is always used to have further crusher for the small materials, and mostly, it is used to crusher the materials crushed by course jaw crusher.