摘要
通过门机结构和现场情况分析,剖析吊装难题,采用四连杆机构回转倒扳法,检修更换回转支承,实践证明,方案合理可行。
The consturction scheme which the reverse pulling method of the four - links framework to truning bearing is used to overhaul and replace the truning bearing is proved to be reasonable by the practice through the analysis of the sturcture of the traveling portal crane, locale situation and difficult problem about lifting.
