Boltless fastener assembly for heavy haul railway with axle load of 35-40 tons

A boltless fastener assembly for a heavy haul railway with an axle load of 35-40 tons, comprising a pre-embedded steel holder, an e-clip, an insulated gauge block and a rubber pad, wherein,

• the pre-embedded steel holder is embedded when a concrete sleeper is prepared;
• a second heel end of the e-clip is inserted into the pre-embedded steel holder to clamp a rail;
• the insulated gauge block is provided between the pre-embedded steel holder and the rail;
• the rubber pad is provided between the rail and a rail bearing surface of the concrete sleeper;
• a clamping leg-heel end of the e-clip is provided with an L-shaped retaining end;
• the pre-embedded steel holder is improved to adapt to the e-clip;
• an opening is adaptively formed at a portion of the pre-embedded steel holder, and the portion is close to the clamping leg-heel end of the e-clip;
• and the L-shaped retaining end extends into the opening;
• the L-shaped retaining end is provided with a contact tooth at one end;
• the second heel end is provided with a groove adapted to the L-shaped retaining end;
• during normal installation, the L-shaped retaining end of the e-clip does not contact the pre-embedded steel holder, and does not affect the normal installation and stress of the e-clip;
• when the rail undergoes large torsional deformation, the contact tooth at one end of the L-shaped retaining end and the groove of the second heel end are engaged in the pre-embedded steel holder to result in large resistance to prevent the rail from torsional deformation, and to prevent the e-clip from failure due to excessive deformation.