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1. 发明专利

JPS5976398A Tunnel drilling method and machine 失效
标题翻译：隧道钻井方法与机器
公开(公告)号：JPS5976398A
公开(公告)日：1984-05-01
申请号：JP18559482
申请日：1982-10-22
申请人： Nippon Telegraph & Telephone , Ishikawajima Harima Heavy Ind
发明人： MORIMOTO KEIJI , SATOU SHIYUUICHI , HONDA KENICHI , YOSHIDA MINORU , MUTA MASARU , SUMIYA TSUNEHIRO , TAKAHASHI TAKAO
IPC分类号： E21D9/06 , E21D9/08 , E21D9/12

6. 发明专利

JPS5839239A DRIVING DEVICE FOR SHAFT BY NUMEROUS MOTORS 失效
公开(公告)号：JPS5839239A
公开(公告)日：1983-03-07
申请号：JP13826081
申请日：1981-09-02
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： MUTA MASARU , WATANABE KATSUO
IPC分类号： H02K7/118
摘要： PURPOSE:To prevent a current from running excessively through motors at starting by a constitution wherein a ring-shaped frame fitted with the motors in the circumferential direction is made capable of racing around a shaft to be driven at the time when the motors are started. CONSTITUTION:In a device wherein a shaft 3 is driven by a plurality of motors 10, a ring-shaped frame to which the motors 10 are fitted is arranged around the shaft 3 to be driven, through the intermediary of rollers 9, and is made capable of racing around the shaft 3. Moreover, an arm 13 and stoppers 14a and 14b are provided for stopping the racing. By this constitution, the ring-shaped frame 7 starts racing first when the motors 10 in plural are started sequentially. About the time when the starting of all the motors 10 is completed, the arm 13 is engaged with the stopper 14, the racing of the frame 7 is thereby stopped, and a driving power is transmitted to the shaft 3 to be driven. Thus, an excessive starting current can be prevented.

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