煤层气钻机自动换杆装置底座失效分析及优化设计

Failure Analysis and Optimum Design on Based Frame of Automatic Drilling Tool Changer for Coalbed Gas Drilling Rig

自动换杆装置主要用于辅助煤层气钻机进行钻具更换工作,通过液压控制底座、给进机身、斜撑油缸等部件实现钻具与钻机动力头的自动对接,进而实现钻具的自动加卸。底座是自动换杆装置重要的一部分,主要作为给进机身及其他部件的支撑体。底座在设计完成后进行加工和安装调试,对其失效原因进行了分析,并采用有限元软件验证,确定了优化方案。优化后的底座进行了返修和再次调试,试验证明改进能够满足使用要求。

Automatic drilling tool changer is to change drilling tool for coalbed gas drilling rig, the automatic interconnection of drilling tool and power unit is realized through the hydraulic control of the base frame, feeding body and inclined piece and the drilling tools can be load and unload automatically. The whole equipment. base frame is the key part of the automatic drilling tool changer, it is to support the During the machining and test of the base frame, the failure reason were analyzed and validated through FEA, an optimal scheme was raised. test again, the result confirms that scheme is reasonable and Optimized based frame was repaired and effective.