| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rail boring machine capable of boring a connection hole in the web of a rail even with the rail on which a vehicle actually runs left laid down. Ž<P>SOLUTION: A drive source 3, a cutter supporting mechanism 4, and a supporting base are disposed on one side of the rail 12 in the lateral direction Y with the rail boring machine 1 installed on the rail 12. A support plate 8 having supporting surfaces 21, 24 which are applied to the lower surface 13b of the head section 13 of the rail 12 and the upper surface 14a of the base section 14 of the rail and restrict the movement of the supporting base in the vertical direction Z is attached to the longitudinal both ends of the supporting base. A magnetic force attracting section 10 having an attracting surface 11 attracted to the side surface 15a of the web 15 in the lateral direction Y between the head section 13 of the rail 12 and the base section 14 of the rail is formed on the supporting base between both support plates 8. In the attracted state, the rotating center line 5a of the cutter attaching/detaching section 5 of the cutter supporting mechanism 4 is disposed in such a manner as to face the side surface 15a of the web 15 in the lateral direction Y on the outside of the one support plate 8 of both support plates 8 on the supporting base. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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