我厂广大革命职工在批林批孔运动的大好形势下,努力学习马列主义和毛主席著作,不断提高两条路线斗争的觉悟。遵照毛主席“独立自主,自力更生”的教导,实行工人、技术人员、领导干部三结合,在上级党委和兄弟单位协助下,1974年底自行设计试制成功一台20吨HS型葫芦双梁桥式起重机,跨度为13.5米。试制完成后,在华中工学院协助下,进行 Under the great situation of criticizing the proletarian and proletarian movements, the vast majority of revolutionary workers in our factory worked hard to study Marxism-Leninism and Chairman Mao’s writings and constantly raise the awareness of the struggle between the two lines. Following the guidance of Chairman Mao’s “independence and self-reliance”, we implemented a combination of workers, technicians and leading cadres. With the assistance of the party committees at the higher level and our fraternal units, we successfully designed and manufactured a prototype 20-ton HS hoist double girder overhead crane by the end of 1974, Span is 13.5 meters. After the trial is completed, with the help of Huazhong Institute of Technology, proceed