牵引(地质)
扭矩
钻探
牵引力
机器人
工程类
演习
结构工程
块(置换群论)
机械工程
材料科学
地质学
计算机科学
数学
物理
人工智能
热力学
几何学
作者
Shuo Han,Xiaohua Xiao,Jianguo Zhao,Xin Zhao,Ruifan Yang
出处
期刊:Processes
[Multidisciplinary Digital Publishing Institute]
日期:2023-07-22
卷期号:11 (7): 2201-2201
被引量:1
摘要
Conventional downhole traction robots only provide axial traction, while coiled tubing drilling (CTD) robots must not only overcome the axial force but also overcome the reaction torque generated by the drill bit breaking the rock. Therefore, the tooth profile of the friction block of the conventional downhole traction robot cannot achieve effective support under the simultaneous action of the axial load and circumferential load. In this paper, based on the actual reaction torque conditions generated by CTD, a mechanical model of the friction block teeth of the CTD robot under the conditions of axial traction and reverse torque is established. This reveals the influence of different tooth slope angles, axial-included angles and friction coefficients on the mechanical properties. It provides guidelines for the design of the inclination of the tooth slope, the axial angle of the tooth and the friction coefficient of the friction block of the CTD robot. It has scientific and engineering significance for the promotion of downhole robots in drilling engineering.
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