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针对国产矿用钻机钻架在工作过程中因承受多种静、动载荷的作用,易出现弯曲、断裂的问题,采用ANSYS软件,对3种不同工况下钻架结构的力学行为进行分析,得出应力和变形分布规律.在此基础上提出4种改进方案.结果表明:钻架结构中横撑及斜撑的尺寸、重量、重心分布及连接方式在很大程度上影响钻架力学行为,优化钻架结构可提高整体承载能力.四种改进方案中,方案四最大应力值降幅达33%,安全系数由1.1提升至1.7,且重量减轻16%.现场应用验证了此优化方案的合理性与可行性.
Aiming at the problems of bending and rupture of drilling rigs of domestic mining rigs under the action of static and dynamic load in the working process, the mechanical behaviors of the rigs under three different working conditions were analyzed by ANSYS software, And the stress and deformation distribution rules are obtained.On the basis of this, four improvement schemes are proposed.The results show that the size, weight, center of gravity distribution and connection mode of the bracing and bracing in the drill-frame structure greatly affect the mechanical behavior of the drill-frame , The optimization of the structure of the drill frame can improve the overall carrying capacity of the four kinds of improvement programs, the maximum stress drop of scheme four drops 33%, the safety factor increases from 1.1 to 1.7, and the weight is reduced by 16% .The field application verifies this optimization scheme is reasonable Sexuality and feasibility.