

In all kinds of the industries, different type of jaw crusher has different applications, such as PE series more than used for coarse broken, PEX series more used for medium and fine. This paper will be on different models of broken jaw defects existing machine are analyzed, and puts forward the corresponding method.
Different classification and the working principle of jaw crusher are different, when the models were started, should be empty load starting. But when crushing cavity with material can start, at this time of the moving jaw of jaw crusher is closer to the rotary center of gravity, this is also likely to be the fact of full launch. When empty load working, almost can hear the voice of the vibration, that told the balance of the crusher is best,and this machine adopts zero suspension form.
Small crusher sometimes violate the provisions of the crusher must empty load startup, In this regard, we should adjust the center of gravity of the moving jaw crusher, when the crushing chamber there is no empty load, to shift its focus from rotary center, so as not to make the crusher at full capacity can also be started, what affects the use of the crusher.
This machine is the negative suspension. Because of the moving jaw ride height is reduced, so uses small eccentricity. Getting the larger jaw travel, to improve the yield and reduce energy consumption, reduce the moving jaw stroke ratio, and reduce liner wear. Because of the moving jaw structure is compact, quality is light, quality center distance from the center of gyration is reduced. Produce the inertia force is less, so that the crusher is easy to start. Operation and machine vibration and the noise is reduced, improves stability of the operation of a machine.
Multi objective optimization design and modern design method for this type of crusher used, what increased production, reduced the heavy of the machine. Considering the eccentricity influence each other distance, dynamic design parameters of jaw suspension height, stroke ratio etc., to find a best design plan and the best parameter values, so that the most optimized crusher.
For this type of crusher, we use the structure optimization design make the crusher has the best dynamic jaw movement characteristics, can not only ensure crusher production increased by 35%, but also prolongs the service life of the lining board. Overall quality greatly crusher decline, what reduced the weight.
On the structure, the elbow guide force is improved, it designed compression bar piece rather than in the form of beam, so as to improve its strength, and weight. Select suitable material and process, can to a certain benefits to the crusher efficiency enhancement.
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