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车载钻机具有机动性强、占地面积小等优点,可满足各种复杂路段、井场的转移和摆放需求,已成为地面煤层气抽采孔施工的主流设备。国内车载钻机普遍存在整机质量偏大问题,一方面对汽车安全行驶造成威胁,另一方面不符合我国相关道路法规及机动车产品公告要求。给进机架是车载钻机工作的主要执行部件,约占整机质量的40%,其轻量化研究对于减轻整机质量具有重要意义。从采用高强度材料、结构精细化设计、CAE优化设计3个方面对机架进行了优化,并进行了静态结构分析,最大应力、应变均满足设计要求。在山西省晋城市进行了现场试验,处理孔内事故时最大起拔力达800 k N,给进机架未产生明显变形,验证了其稳定性与安全性。
Car drilling rig has the advantages of strong maneuverability, small area, etc. It can meet the needs of various complicated road sections and well field transfer and has become the mainstream equipment for ground CBM pumping hole construction. Domestic car rig widespread universal mass of the machine is too large, on the one hand pose a threat to the safe driving of cars, on the other hand does not meet China’s road laws and regulations and motor vehicle product bulletin requirements. Carriage into the rack is the main operating components of car rigs, accounting for about 40% of the quality of the whole machine, the weight of the study to reduce the quality of the whole is of great significance. From the aspects of high strength material, fine structure design and CAE optimization design, the frame is optimized and the static structure analysis is carried out. The maximum stress and strain meet the design requirements. A field test was carried out in Jincheng City, Shanxi Province. The maximum pull-out force reached 800 kN during the accident in the hole. No obvious deformation was given to the machine frame, which verified its stability and safety.