| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary driving device capable of quickly coping with various kinds of method. <P>SOLUTION: In this rotary driving device 1, rotation of a hydraulic motor 4 is transmitted to a hollow shaft 2 through reduction gears 12-15 to output the rotation of a drive shaft 3 fitted to the hollow shaft 3 freely to be removed. The drive shaft 3 is integrally formed with a shaft main body 20, which is provided with polygonal parts 25 and 26 formed into the hole shape of the hollow shaft 20, and a joint 21 for connecting a working rod. <P>COPYRIGHT: (C)2003,JPO |
