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an advantage of nx system in the austrilia impact crusher design is analyzed. with nx system engineering approach, 3d design of the austrilia impact crusher is conducted and the motion simulation and finite element analysis is also carried out. this study shows that the mechanism parameters on the austrilia impact crusher has certain impact on machine performance, such as jaw trajectory performance values, machine size and weight, tooth plate life, power consumption and production capacity. at the same time, the length calculation formula on each rod of mechanism and any point displacement equation of the movable jaw tooth surfaces are derived. in the paper, adaptability of breaking large lump coal by non-mechanical rock breaking methods such as water jet as well as impact breaking was analyzedthe application and limitation of hydraulic hammer, single-roll impact austrilia impact crusher, hydraulic austrilia impact jaw crushers from zenith of china and jaw crushing machines from zenith of china and hydraulic walk breaking device to breaking of underground lump coal were introducedit was pointed out that easiness of moving and mounting, safety and efficiency were development direction of lump coal crushing device. see more images and information about Industrial Milling machines and jaw crushers from zenith of china and jaw crushing machines from zenith of china ,visit this website:http://crusher.jawcrushermachinery.com/news/jaw-crushers-from-zenith-of-china.html