Structural Design Of Compound Pendulum Jaw Crusher Based On Finite Element Method

Material crush is an extensive useful process in many industrial departments, such as metallurgy, mine, building materials, chemical industry, coal industry etc. Every year, lots of raw material and reusing waste are needed to be crushed. Compound pendulum jaw crushers has been one of widely used crushing equipment in shattered project because of its simple structure, reliable working, easy to maintain, strong adaptability and low cost. Thus, high-performance and low-cost compound pendulum jaw crushers’ design and produce can help increasing the product quality and diminishing the technology gap between inland and abroad. The virtual prototype model was set up taking PE150 ? 250 compound pendulum jaw crushers as research object which has been optimal designed in the paper. The main study contents are as follows:The three-dimensional geometrical modeling and assemble model were established. The assembled parts model were interference analyzed, at which the three-dimensional parts model were revised, until the interference disappeared. The errors of assembly structure model have dropped by analyzing and revising interference, which can guarantee a higher modeling accuracy.The virtual prototype analysis model was established by means of importing the compound pendulum jaw crusher model to ADAMS/View software using ADAMS2010, and whose dynamic simulation analysis was finished. The trajectory characteristics of jaw crusher feeding inlet and discharging inlet was studied and the influence rule of eccentric distance and bracket length were obtained. Finally, we got the optimum value of eccentric distance and bracket length. The service life was prolonged, the reliability was enhanced, and the energy was saved.The parts structure analysis model of roll housing, moving jaw body, eccentric shaft and toothed palter were established. The laws and characteristics of all parts’ inner stress were studied. The structure strength of moving jaw body was optimal designed, the stress distribution was well-distributed, and the structural strength and fatigue resistance was enhanced. The shaft shoulder fillets of eccentric shaft were comparative studied, and the fillet radius of minimum stress was confirmed. The stress distribution characteristics of triangle, circular and rectangle were comparative studied, and the tooth profile was changed. It was concluded that the tooth surface strength was increased, the stress concentration was decreased, the service life of toothed plate was extended, and the efficiency of crushing was enhanced.