초록 ▼

At a road/rail crossing, rubber inserts are located alongside the rails, between the rail and the asphalt of the road. The insert has a resilient nose, which engages the under-face of the head of the rail. The insert does not touch the web of the rail, but rather the insert is wedged between the hea

At a road/rail crossing, rubber inserts are located alongside the rails, between the rail and the asphalt of the road. The insert has a resilient nose, which engages the under-face of the head of the rail. The insert does not touch the web of the rail, but rather the insert is wedged between the head and the flange of the rail. This engagement assists in locking the insert to the rail, by self-locking-taper action.

대표청구항 ▼

[ We claim:] [1.] An insert apparatus for a road-rail crossing, wherein:the crossing includes left and right rails, and a road made of a material;the apparatus includes an insert, of elastomeric material, and of constant cross-sectional profile along its length;in respect of one of the rails:the ins

[ We claim:] [1.] An insert apparatus for a road-rail crossing, wherein:the crossing includes left and right rails, and a road made of a material;the apparatus includes an insert, of elastomeric material, and of constant cross-sectional profile along its length;in respect of one of the rails:the insert is arranged for placement lengthwise alongside the rail, between the rail and the material of the road;the rail has a head, a web, and a flange;the head of the rail has a downwards-facing under-face, and the bottom flange of the rail has an upwards-facing over-face;the under-face and the over-face are so positioned and angled as to define a wedge angle included therebetween;the cross-sectional profile of the insert includes a head-surface, which is complementary to the under-face of the rail-head;the cross-sectional profile of the insert includes a flange-surface, which is complementary to the over-face of the rail-flange;the cross-sectional profile of the insert is so proportioned that, when the insert has been placed lengthwise alongside the rail, and has been pressed into contact with the rail, the insert can lie tightly wedged between the head and the flange of the rail;in that the profile of the insert lies substantially clear of the web of the rail, and in that the head-surface of the insert lies tight against the under-face of the rail-head, and simultaneously the flange-surface of the insert lies tight against the over-face of the rail-flange;the proportions of the cross-sectional profile of the insert are such that the insert can be so tightly wedged between the head and the flange of the rail that the insert is thereby self-sustaining, in that the insert holds itself in place against the rail, prior to the material being put in place.