旋挖钻机调桅机构动态特性的一体化建模分析

为一体化表达旋挖钻机调桅机构内在的复杂动态特性,提高调桅机构起升过程中关键零部件及其相关液压系统的性能平顺性.首先采用牛顿-欧拉方法建立调桅机构的动力学模型,然后基于功率键合图理论建立调桅机构的液压系统模型,通过改变调桅机构安装位置参数对其起升过程动态特性的影响分析与比对,从而得出一组优化的安装位置参数供设计人员选择参考.该机械-液压系统一体化建模方法为旋挖钻机调桅系统可靠设计提供了一定的理论依据.

Integrated Model based Analysis of Mast Mechanism of Rotary Drilling Rig and Its Dynamic Characteristics

The study aims to describe the inherent complex dynamic characteristics of mast mechanism of rotary drilling rig synthetically and improve the smooth-going performance of key parts and related hydraulic system in the lifting process for mast mechanism.A dynamic model of mast mechanism is first established with Newton-Euler method,and then a hydraulic system model of mast mechanism based on power bond graph is built up.A set of optimal installation position parameters are obtained through analyzing and comparing the impact of the dynamic characteristics due to changes of the installation position of mast mechanism in the lifting process.The integrated modeling method provides a certain theoretical reference for designing the mast system of rotary drilling rig.