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目前悬臂式掘进机已经成为国内大多数煤矿巷道掘进的主要设备。悬臂式掘进机多采用履带行走机构支承机器的自重和牵引转载机行走。当进行掘进作业时,行走机构承受切割机构的反力、倾覆力矩及动载荷。行走机构的可靠性对整机起到至关重要的作用。1存在的问题行走机构工作在泥沙混合的底板上,支重轮和导向装置经常浸泡在潮湿的泥沙中,因此对于自身的结构和使用寿命提出很高的要求。在工作过程中,履带链和导向装置做周期性的变速运动,因此,和导向链轮相连接的零件也产生周期性的速度变化,从而引起动载荷。履带链的质量和加速度越大,则动载荷越大。动载荷、履带链与链轮啮合瞬间产生的冲击,以
At present, the cantilever boring machine has become the main equipment for most domestic coal tunnels. Cantilever Road Header more use of crawler walking mechanism to support the weight of the machine and traction transfer machine to walk. When carrying out tunneling operations, the traveling mechanism withstands the reaction force of the cutting mechanism, overturning moment and dynamic load. The reliability of the walking mechanism plays a crucial role on the whole machine. 1 problems Traveling agencies working in the mixed sand floor, roller and guide often soaked in damp sediment, so for its own structure and life expectancy put forward high requirements. In the course of work, the track chain and guide gear make periodic variable speed movement, therefore, the parts connected with the guide sprocket also produce the periodic speed change, thus cause the dynamic load. The greater the mass and acceleration of the chain, the greater the dynamic load. Dynamic load, track chain and sprocket mesh moment impact