BOGIES AND SUSPENSION - South Central Railway

CHAPTER 6 – BOGIES AND SUSPENSION
s) RIVETING STRIP
WAGON MAINTENANCE MANUAL
Page 26 of 121
It is made of a plate of 6 mm thickness, 240 mm long and 45 mm wide
with 4 mm chamfer at 45 0 on one of the vertical edges. It has 4 rivet holes of
17.5 mm dia. at a distance of 16 mm, from the chamfered edge having pitch
of 60 mm. It is fitted on the inner surface of the sole plate. The snap head of
the rivet bears on its other surface. The edge has been chamfered to enable the
Horn gap stiffener to be fillet welded to the sole plate. The other edge should
be tack welded with the sole plate.
t) HORN CHEEK PACKING
It is 240 mm long and 38 mm wide. It has a 8 mm chamfer at 45 0 on
its vertical edge to enable fillet welding of horn gap stiffener with the sole
plate. It has four rivet holes similar to the riveting strip except that they are at
a distance of 18 mm from the chamfered edge. It is fitted on the outer surface
of the sole plate. On the surface opposite to this surface, the horn cheek is
secured. The vertical edge opposite the chamfered edge is fillet welded to the
sole plate.
u) HORN CHEEK
It is an ‘L’ shaped part made of steel. Its short leg is kept perpendicular
to the track and the long one parallel to the track. The long leg is secured with
the sole plate by four counter shunk rivet of 16 mm dia. with horn Cheek
packing between the two and the riveting strip placed behind the sole plate.
The four parts are riveted together. The thickness of the long leg is 17.5 (+0/-
0.5) mm and short leg 15 + 0.5 mm.
v) HORN GAP STIFFENER
It is a inverted ‘U’ shaped block of 25 mm thickness and 65 mm width
at most of the places. At the top, the width increases to 80 mm and the bottom
decreases to 45 mm. Its outer surface is kept perpendicular to the sole plate
and welded to it on both sides through out its periphery. The inner straight
edge is kept at a distance of 37 mm from the inner surface of the sole plate.
The outer edge opposite the horn cheeks is at a distance of 20 mm from outer
surface of the sole plate.
w) PACKING BEHIND SOLE PLATE
(FOR HORN GAP TIE BARS)
Its vertical edges near the horn gap stiffener is inclined and chamfered.
It is fitted just after the horn gap stiffener keeping its bottom longer side 20
mm above the bottom edge of the sole plate. It is tack welded to the inner
surface of the sole plate along its longer sides. It has two rivet/bolt holes,
which are drilled in position after tack welding with sole plate.