LOWER BINDING DEVICE FOR SUPPORTING ELECTRIC TRACTION IN TUNNEL

摘要

PROBLEM TO BE SOLVED: To surely and supportedly fixing an electric traction, without driving anchor bolts, in a tunnel having inner wall formed by connecting segments to each other.;SOLUTION: Support members 3 supporting an electric traction support device 4 are fixed to the tunnel through support beams 2 fixed to the tunnel so as to be extended along the ceiling of the tunnel. Connection fittings 5 are projectedly disposed on the support beams at such positions that can be inserted into the operating recessed parts 31c of the connection bolts or nuts for the segments 31. The connection fittings 5 are positioned along the connection end faces of the segments 31 in the recessed parts 31c of the segments 31. The connection bolts for the segments 31 are inserted into the bolt insert holes 5a of the connection fittings 5, and tightened following the tightening of the segments 31. Since a lower binding device 1 is fixed to the ceiling of the tunnel by the support beams 2 having the connection fittings 5 corresponding to the connection parts of the segments 31, the electric traction can be surely installed in the tunnel having the inner wall formed by connecting the segments 31 to each other without driving the anchor bolts.;COPYRIGHT: (C)2003,JPO