Inertial crushing machine has very good structural characteristic and dynamics, so when you process the different nature of the ore, can meet different process requirements. Analyze the nonlinear vibration condition, you can deeply reveal its excellent characteristics, in order to better guide the production.
Inertia cone crusher is composed by the power parts, transmission parts, and working part. The vibrating condition of Inertia cone crusher during the work is very complex, the materials in crushing cavity always have been accepted a force in the course of work, participating the vibration, and it is an important part of the vibration system. The actual inertia cone crusher system vibration is a two degree of freedom nonlinear vibration.
(1), hysteresis force analysis
In the motion cycle of Inertia cone crusher, the hysteresis force is symmetrical, it is a relevant material property on the piecewise linear odd function symmetric origin.
When the moving cone gap is greater than the loose degree between materials in the crushing chamber, moving cone begin to load, increasing the accumulation of stress and strain of the material layer in the elastic deformation stage. When the relative displacement of the moving cone reaches the limits of displacement, breaking institution will be in a forward unloaded state, the principle materials, hysteresis force finally will be reduced to zero. Because the process of crusher is cyclic and symmetric so when the reverse loading and unloading, the institutional movement is similar to the results of the previous analysis.
(2), hysteresis force equation
The hysteretic force is symmetrical about the origin of coordinate, so you can make use of the displacement and velocity to set up the cone hysteretic force equation. Through the calculation of the equation we can see, the actual vibration frequency of the crusher is not only related to the frequency of the vibration exciter, the quality of the machine, and rubber spring elastic stiffness, but also to the other material parameters. The quality of the system, the impact crusher amplitude, the stiffness of isolation vibrating system rubber spring, the exciter frequency and nature of the materials will influence the amplitude and work efficiency. Different stiffness of rubber spring has different excitation frequency to get better crushing effect and better productivity.
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