基于运动学模型的轴扭冲击器仿真分析  

Simulation Analysis of Axial-torsional Impactor Based on Kinematic Model

作　　者：江泽才 张强[1] 武进虎 纪昌桂 

机构地区：[1]长江大学机械工程学院

出　　处：《工程机械》2024年第4期30-35,I0013,共7页Construction Machinery and Equipment

摘　　要：针对深层钻井过程中存在的岩石破碎难度大、钻井效率低的问题,基于直径为178 mm的轴扭冲击器的结构和工作原理,建立轴扭冲击器力学模型,并对其进行相关动力学仿真。仿真结果表明:随着转速的增大,轴扭冲击器的轴向冲击力变化很小,附加转矩变化较大;随着地层岩石硬度增大,轴向冲击力变化较大,附加转矩先增大后减小;随着下锤体碟簧弹性系数值增大,轴向冲击力变化很小,附加转矩先增大后减小。结论认为:提高碟簧的弹性系数,或增大碟簧的压缩量,可以获得更大的扭转冲击力。In view of the problems of difficult rock breaking and low drilling efficiency in the deep drilling process,based on the structure and working principle of an axialtorsional impactor with a diameter of 178 mm,a mechanical model of the axialtorsional impactor is established,and the related dynamic simulation is carried out.The simulation results show that,with the increase of rotational speed,the axial impact force of the axial-torsional impactor changes slightly,and the additional torque changes greatly.With the increase of formation rock hardness,the axial impact force changes greatly,and the additional torque increases and then decreases.With the increase of elasticity coefficient of the disc spring of the hammer body,the axial impact force changes slightly,and the additional torque increases and then decreases.It is concluded that increasing the elasticity coefficient of the disc spring or increasing the compression of the disc spring can obtain a greater torsional impact force.

关 键 词：轴扭冲击器 冲击力 冲击转矩 

分 类 号：P634[天文地球—地质矿产勘探] TP391.9[天文地球—地质学]