The Crushing Process Characteristics of Jaw Crusher
Posted Oct 12 2012 2:57am
Due to the characteristics of the symmetry of the structure and the crushing process of the materials of the jaw crusher, the hysteresis force is symmetrical in a movement of the material crushing cycle. It is symmetrical about the linear odd function of the origin piecewise. Due to the symmetry of the structure of the crusher machine, when the inner crushing cone moves to the opposite direction, its movement characteristic is similar to that prior. We can observe the crushing process on the zOy plane, for the movement on the y positive or negative direction of the entire system, the loading and unloading hysteresis force characteristics are consistent. Therefore, the difference is that the hysteresis force phase in positive and the negative direction has just a difference of 180. Therefore, for the vibrating system of the composite sync vibrating jaw crusher, due to the forward loading and unloading, the reverse loading and unloading and the density of the loose materials layer, the restoring force of the material layer is a special form of hysteresis recovery force. For the sake of simplicity, the available gap bilinear hysteretic force model can be used to represent the hysteretic restoring force. We can know the form of the hysteretic restoring force from the entire material crushing process. The material layer deforms because of the extrusion, vibration and the impact from the inner crushing cone and transfers energy to the outer crushing cone, which will cause the slight movement of the outer crushing cone. This shows that the material layer is not only the object for processing, but also an organic part of the vibrating system for the composite sync vibrating jaw crusher. The acting force of the material layer is introduced to the vibrating system of the crushers. The establishment of the nonlinear motion equations of the vibrating systems of the acting force of materials is of great significance. The inner crushing cone does the reciprocating movement along the z-direction and y-direction within zoy plane because of the exciting force. In summary, we must grasp the crushing process characteristics of the jaw crusher. In this way, the working efficiency can be greatly improved.
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