The Research Of Laboratory Jaw Crusher Liner Based On Coarse Crushing

The jaw crusher is the main equipment of breaking materials. It is widely used in ferrous metallurgy, nonferrous metallurgy, mining, construction trades and other industries. When compared to the domestic many types of crushers, pendulum jaw crusher is widely used for its low cost and high efficiency. The crushing chamber is consist of active jaw plate, fixed jaw and sideward liner plates. The shape of the crushing chamber is decided by discharging port size, feeding port size, nie angle, arrangement of moved and fixed and sideward liner plates, longitudinal and transverse section shape of the liner and so on. These factors directly affect the crusher of productivity, production size, energy consumption, grain shape and the service life of the liner etc. So domestic and foreign scholars pay a lot of attention to it and do a lot of research by modern computer technology.In order to realize the "optimum cavity shape" requirement, we design a new laboratory jaw crusher with coarse crushing based on considering the material flowing and the actual situation of crushing in this paper. Give a good crushing cavity shape structure. Calculate the parameter of crushing cavity shape, material feeding cycle, the motor speed, the energy and production of crusher. Determine parameters of the liner and its tooth profile. And give the3D model of liner. Control the crank rocker organization based on the top-down design of layout. Assemble the liner on the connecting rod. Use the Pro/Mechanism to simulate the complex movement characteristics of the liner based on the model. Calculate the force distribution of liner for its flowing and crushing characteristics in crushing cavity, in order to provide accurate model and dynamic load of loading in finite element analysis. The main work of this paper as follows:(1) Give a new design method of the jaw crusher based on flowing and crushing characteristics of the single particle material in crushing cavity. Give the structure and working parameters of jaw crusher after accurate calculation. Suggest a good form of crushing cavity. Design a new liner with curve trapezoid tooth.(2) Based on the layout of crank rod system on top-down. Use Pro/Mechanism to simulate the kinematic analysis of the liner, which fix on the moving jaw. Give the displacement, speed, acceleration of the key points in horizontal and vertical direction. Obtain the complex movement characteristics of the liner.(3) Calculate the force of the liner in each crushing location. Combined with the flowing and crushing characteristics of material. Give the static and dynamic stress distribution of liner. Use the Pro/Mechanica module to analyze static analysis and fatigue analysis of the liner. Draw the corresponding stress cloud and strain cloud of the liner. Provide a strong theoretical basis on the stress analysis and life prediction.