日本长冈技术科学大学工学博士伊藤广教授应机械工业部重型矿山机械局的邀请来华,于1982年8月2日至25日先后在北京、大连和上海等地作了学术报告,参加听讲的有200余人。伊藤广教授的报告,重点讲了吊重的动态特性、整机稳定性、支腿反力的精确计算和臂架稳定性计算等几个问题,介绍了他进行动态分析的力学模型、用能量法以拉格朗 Prof. Ito Fujihiko, Ph.D., Nagaoka University of Technology, Japan, came to China at the invitation of the Heavy Mining Machinery Bureau of the Ministry of Machinery Industry. From August 2nd to 25th, 1982, he made academic reports in Beijing, Dalian, and Shanghai to attend lectures. There are more than 200 people. Prof. Itohiro’s report focused on several issues such as the dynamic characteristics of hoisting, the stability of the whole machine, the accurate calculation of the counter-force of the legs, and the calculation of the stability of the boom, and introduced the mechanics model and the energy of dynamic analysis. Lagrand