Sleeper is a transverse support for a railway track to give
stiffness to it. the sleeper should counteract the tendency of forces, which
tends to distribute the track and should acts as elastic medium between the
rail and the ballast in order to absorb all the shocks and vibrations of the
trains.
Functions of sleepers
1. to hold the rails to correct gauge.
2. to distribute the axle load over a sufficient large area
of ballast
3. to give firm and
even support to the rails.
4. to maintain the alignment...
Thursday, 13 August 2015
Coning of wheel
If the distance between the inside edge of the flanges is
kept equal to the gauge distance, the flange of the wheel would rub against the
inside face of the rail. to prevent the distance between the inside edge of the
flange is kept less than the gauge distance.
if the rim of the wheels rests flat on the rails, there
would be lateral movement of the axle resulting in damage to inside edge of the
rails. this is prevented by sloping the wheels at a slope of 1 in 20. the foot
of the rail resting on the sleepers is...
Permanent way
A permanent way is
the combination of rails, sleepers, ballasts,fixtures and fastenings, etc.
This term is used to distinguish the finished and permanent
track from a temporary track which is laid for temporary work, i.e. for transporting
construction material etc on major construction sites.
such a temporary track is removed as soon as the
construction completed. the purpose of use of a permanent way is to provide the
permanent facility for safety and quick movement of normal commercial
traffic...