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换杆装置是车载钻机的主要配套装备,夹持器是换杆装置的关键部件之一,夹紧钻杆同时配合其他工作机构完成钻杆的推送、俯仰、上卸扣等动作,其性能的好坏直接影响到上下钻杆的效率。根据其功能要求,对设计方案进行有限元分析和优化,分析结果显示最大应力点出现在支撑臂与油缸连接的销孔处,通过支撑臂局部加厚和加肋板的方法来提高薄弱点结构强度,经有限元分析验证,支撑臂结构强度满足结构使用要求。
The rod changing device is the main supporting equipment of the vehicle drilling rig. The gripping device is one of the key components of the rod changing device. The clamping drill rod can cooperate with other working mechanisms to complete the pushing, tilting, Good or bad directly affect the efficiency of drill pipe. According to its functional requirements, the finite element analysis and optimization of the design scheme are carried out. The analysis results show that the maximum stress point appears at the pin hole where the support arm and the cylinder are connected, and the weak point structure is enhanced by the thickening of the support arm and the ribbed plate Strength, verified by finite element analysis, structural strength of the support arm to meet the structural requirements.