摘要
针对现有绳索取芯绞车存在的问题,设计了一种排绳均匀、结构紧凑、可重钩下放的高效节能新型绞车,针对深孔绳索取芯钻进工艺需求及绞车结构特点,构建了绞车钢丝带取芯钻具自由下放过程的力学模型,确定了绞车重钩自由下落过程的测控方法,给出了考虑孔内钻井液阻尼影响的重钩下落最优制动时间点的计算方法。样机实验表明:本产品自动化程度高,排绳效果好,取芯钻具下放过程无需电机驱动,节能高效,制动过程实现了柔性化。产品可广泛应用于地质勘探、矿山开采和海洋科考等领域。
Designs a new energy-efficient winch with uniform rope, compact structure and heavy hook descending to solve the problems existed in wire-line coring winch. For the drilling process requirements of the deep-hole wire-line coring and the structural features of the winch, a mechanical model of the core drill bit's free fall process driven by the winch wire is constructed and measuring and controlling approaches of the winch's heavy hook free fall process is confirmed. Besides, the computing method of the optimal braking time control is proposed, which has been considered about the drilling fluid damping effects in the hole. The prototype experiments show that this product has high degree of automation; The effect of the rope's configuration is good; The drill down doesn't need the motor's driving, which is energy-efficient; The b widely applied to geological exploration, mining, raking Marine process achieves flexibility. The product can be research and other fields.
出处
《煤矿机械》
北大核心
2014年第9期172-174,共3页
Coal Mine Machinery
基金
国家自然科学基金项目资助(41340048)