IMPROVED SWITCH EXPANSION JOINT (ISEJ)- Rahee design

IMPROVED SWITCH EXPANSION JOINT (ISEJ)

ISEJ (Rahee design) comprises a
pair of non-bent Rails (Stock Rail)and (Tongue Rail) mounted on C.I Chairs with
a gap (expansion gap) between the two juxtaposed rail ends. A third rail (gap
avoiding rail) is securely bolted to the Stock Rail by bolts with high tensile
strength to form an extension of the Stock Rail. The system also has check
rails to reduce wheel hunting, especially for worn out wheels. They are bolted
to the C.I Chairs fixed symmetrically opposite to the expansion gap. The check
rails also act as angle ties to keep the sleepers in position. All wheel
transfer areas are head hardened to increase service life.

Salient features of ISEJ:

  • Excellent riding
    comfort
  • Low life-cycle cost
  • No undue stress on the rails
  • Capable of being laid on curved tracks
  • Head hardened wheel transfer zone leading to longer service life
  • Smooth wheel transfer, increasing the life of rolling stock
  • Capable of handling gaps up to 120 mmย 
  • Safe due to the presence of check rails which guard against excessive play of
    worn out wheels
  • Continuous support for wheel-set on rail; no jump or change in level of
    wheel-set while negotiating gaps.


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