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人民日报已庄严宣布成昆铁路胜利建成通车,成功地使用了新型架桥机。130吨新型架桥机的吊梁机构是由四台一齿差3K行星齿轮传动卷筒组成。笔者于1965年至1967年间参加了一齿差3K行星齿轮传动卷筒的设计、制造和使用。该架桥机吊梁的起升速度为0.3米/分,要求的传动机构减速比为670。又由于架桥机要通过隧道,外形尺寸受隧道界限尺寸的限制,因此要求传动装置外形尺寸越小越好。
People’s Daily has solemnly declared the victory of Chengdu-Kunming Railway was opened to traffic and successfully used a new type of bridge erecting machine. 130 tons of new bridge crane hanging beam mechanism consists of four a tooth gap 3K planetary gear transmission drum composition. The author from 1965 to 1967 participated in a tooth 3K planetary gear transmission gear design, manufacture and use. The lifting speed of the erecting crane beam is 0.3 m / min, and the decelerating ratio of the required transmission mechanism is 670. And because of the bridge to pass the tunnel, the size of the tunnel by the limited size constraints, requiring the smaller drive size the better.