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How to optimize the eccentric shaft of the compound pendulum jaw crusher

The compound pendulum jaw crusher is one of the commonly used crushing equipment for crushing medium grain size. Due to its outstanding advantages in crushing ore, the application range is wider and wider. In the structure of the crusher, the eccentric shaft is a very important part of the jaw crusher. The optimization of the eccentric shaft has great practical significance.

The optimization of the eccentric shaft includes establishing a three-dimensional model of the eccentric shaft of the jaw crusher on the Pro/E platform, analyzing the stress condition of the eccentric shaft when working, and using the Pro/E simulation function to analyze the stress of the jaw crusher. The finite element analysis of the eccentric shaft part is carried out, and the eccentric shaft is optimized based on the finite element analysis.

When establishing a three-dimensional model of an eccentric shaft, it is necessary to mesh within the allowable deviation range and add a fixed constraint to the bearing position on the frame on both sides of the eccentric shaft. The finite element analysis of the established 3D model is then performed.

According to the results of the finite element analysis, the stress value at the portion between the two bearings on both sides of the eccentric shaft is large, which is much smaller than the large allowable stress of the material. The stress at both ends of the model is small, and the smaller deformation is close to 0.

Since the eccentric shaft is a highly stressed part, the safety factor should be large enough when optimizing the eccentric shaft. According to the results of the finite element analysis, a support can be added in the middle of the eccentric shaft to further improve the stress and deformation of the eccentric shaft, so that the stress distribution becomes more uniform and the deformation morphology is further improved. It is also possible to increase the size of the stress portion. Both of these methods can optimize the eccentric shaft and improve the production efficiency of the crusher.

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