China DTIV-1 Subway fastening system
1. This fastening is elastic separate type, apply to 50 kg/m rails wooden sleeper ballast bed area.
2. Fasteners technical indicators:
(1) Fastening and casting die for National rail transit elastic strip (φ13), divide into A and B two types. Rail junction 6, 8 joint mat used type B type elastic strip, Other parts are used A type elastic strip. Tighten to play a central front chin contact rail pad shall prevail. Tightening torque for 100~120KN/mm.
(2) Vertical static stiffness of fastener node for 30~50KN/mm.
(3) A set of fasteners climbing resistance of not less than 11KN.
(4) Rail pad divide into the middle and joint two types, each has 6, 8, 10, 12, a total of four number. 6,12 number to adjust the gauge for later use.
(5) Fasteners level adjustment amount to 10 mm (Under the rail pad is 10 mm).
(6) Gauge to adjust the amount of + 4, - 8 mm.
(7) The resistance value of insulation parts are greater than 108Ω.
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