Patent ID: 8485452
Filing Date: 2013-07-16
Classification: E01B

Abstract:
1. A guard rail apparatus for guiding derailed wheels by a guard rail installed on the edge of a sleeper or a concrete slab track so that a derailed train will not run away outside the track, wherein a first guard rail and a second guard rail are arranged so as to be in parallel with main rails at locations outside the range of the ballast tamping work at one end and the other end of the sleeper or the concrete slab track respectively, and the first guard rail and the second guard rail are fastened to the sleeper or the concrete slab track by a rail fastening device, wherein a rail fastening device comprises a fixed block and a first fixed metal fitting and a second fixed metal fitting, and the upper surface of the sleeper or the concrete slab track slopes upward a little from the center toward both ends, and the fixed block comprises a pseudo wedge-shaped projection along the slope of the upper face of the sleeper or the concrete slab track and a plate-shaped member being able to come into contact with the edge face of the sleeper or the concrete slab track, and the first fixed metal fitting comprises a left side member and a right side member and a bottom member, and an upward projection is provided around the edge of the bottom member, and the pseudo wedge-shaped projection of the fixed block touches the slope of the upper surface of the sleeper or the concrete slab track, and the bottom member of the first fixed metal fitting touches the lower surface of the sleeper or the concrete slab track and the both sides of the sleeper or the concrete slab track are covered with the left side member and the right side member, and the pseudo wedge-shaped projection of the fixed block is pushed down by the second fixed metal fitting and the pseudo wedge-shaped projection of the fixed block is put between the second fixed metal fitting, the left side member and the right side member of the first fixed metal fitting, and the sleeper or the concrete slab track is fastened by a fastening member, and the plate-shaped member of the fixed block is received in a gap between the projection provided at the bottom member of the first fixed metal fitting and the end face of the sleeper or the concrete slab track, and one rail base end of the guard rail is received at a recess of the fixed block and the other rail base of the guard rail is fastened by a fastening member.