Abstract:

The mathematic models of total center of gravity and the attachments of a rotary drilling rig moved were established under the different working conditions herein, which made the angle β as a generalized variable, and the angle β was the angle between the vertical plane and hydro-cylinder of boom. The mathematical models of the static stability angle and the dynamic stability angle were made by utilizing the formula of total center of gravity moving. The variation trend of the stability of the rotary drilling rig could be distinguished accurately in the corresponding working conditions with these models. And some effective guides are attained for the earlier stage design of rotary drilling rig.

Key words: large rotary drilling rig, stability, static stability angle, dynamic stability angle, rotation

摘要：

以动臂油缸与竖直平面的夹角β作为广义变量,建立了不同工作姿态下旋挖钻机整机重心变化的数学模型,并利用重心变化的方程推导旋挖钻机不同位姿静态稳定角及动态稳定角的数学模型。通过这些数学模型,可以精确地判断旋挖钻机在任意工作姿态下的稳定性变化趋势,从而为旋挖钻机前期的设计提供有效的指导。

关键词: 大型旋挖钻机, 稳定性, 静态稳定角, 动态稳定角, 回转