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本文用四阶龙格库塔法求解气动无阀独立回转凿岩机动力过程微分方程,从而建立起该凿岩机的仿真模型,以此为依据并采用SUMT优化程序对凿岩机进行了结构优化。文章还对无阀冲击机构的性能参数理论计算公式、最优轴推力的计算公式、消声器热力过程的模拟及参数选择、凿岩机的振动机理及防振装置的设计方法等问题进行了探讨。最后,以本文提供的理论与方法,设计出了一台新型无阀气动独立回转凿岩机。
In this paper, the fourth-order Runge-Kutta method is used to solve the differential equation of the dynamic process of the pneumatic valveless rotary drilling rig, and the simulation model of the rotary drilling rig is established. Based on this, SUMT optimization program is used to optimize the structure of the rotary drilling machine. The article also discussed the theoretical calculation formula of the valveless impact mechanism, the calculation formula of the optimal shaft thrust, the simulation and parameter selection of the muffler thermal process, the vibration mechanism of the rock drill and the design method of the anti-vibration device. Finally, based on the theory and method provided in this paper, a new valveless pneumatic rotary drilling rig has been designed.