Today, the Global Crusher Network introduces a method for scientifically designing the jaw crusher of the jaw crusher, namely the modal analysis method. The design process is to use the finite element analysis software ANSYS to analyze the modal of the jaw crusher of the jaw crusher, calculate the low-order natural frequency and vibration mode of the movable jaw bracket, and analyze its dynamic characteristics to provide the structural design of the movable jaw bracket. Theoretical guidance and reference data. Firstly, the three-dimensional solid model of the movable jaw bracket is established in the finite element analysis software ANSYS environment, and the distribution of material properties, the division of finite elements, the constraint boundary conditions and the application of loads are carried out. From the calculation and analysis results, it can be seen that the entire bracket is laterally oscillated, which indicates that the position of the large displacement caused by the vibration of the movable jaw bracket at the lower working frequency is near the tail, and if the working frequency of the power source of the moving jaw is close to At this frequency, it is easy to cause resonance, causing damage to the stomach due to excessive vibration deformation. As the vibration frequency increases, the maximum displacement also changes. When the working frequency of the bracket is close to the range of 29-32 Hz, the position where the maximum displacement of the bracket occurs is the same, both in the middle. When the working frequency continues to increase to 35-38 Hz, the entire moving jaw bracket is completely distorted when vibrating, and the maximum displacement occurs at the tail of the cover. From the modal analysis, when designing the jaw of the jaw crusher, it should be strengthened in the weak part, that is, the joint between the bracket and the bracket of the movable jaw and the hole near the stiff plate is a weak part, and at the same time, when the crusher is working, The weak part is strengthened to prevent cracks due to fatigue and eventually destroy the bracket.
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The jaw crusher is a device that crushes brittle stone by physical extrusion and is widely used. At present , the design of the jaw crusher is mostly based on the traditional experience and conclusions, especially the design of the movable jaw part, which has great blindness. Therefore, the design of the structure is not satisfactory.