A CONCRETE SLEEPER BLOCK COMPRISING A RAIL SUPPORT INSERT PLATE OF ELASTOMERIC MATERIAL,A METHOD OF MANUFACTURE THE SLEEPER BLOCK AND A RAIL INSERT PLATE FOR CARRYING OUT THE METHOD

摘要

A concrete sleeper block (2) has a rail support insert plate (1) of elastomeric material mounted i a recessed upper portion (2a) thereof. The insert plate has downwardly extending projections (1c) which are provided with holes and which are arranged to be accommodated in corresponding holes (2c) in the recessed portion (2a) of the sleeper block (2). The projections accommodate a securing means, for example in the form of a ball (1e) made of an elastic material, which when the plate is mounted are pressed down to a bottom position in the projection while expanding said projection in respective holes. A method of manufacturing the sleeper block and a rail support insert plate (1) of the kind described are also objects for protection.