Hogged, Buckling And Tilting of Rails - Civil Engineering

Thursday, 13 December 2018

Hogged, Buckling And Tilting of Rails

Hogged Rails

Due to bettering action of wheels over the end of the rails, the rails get bent down and get deflected at the ends. These rails are called hogged rails.
Hogged rails
This hogging of the rails at the ends is due to loose packing under the joints and / or loose fish plates.This defect cause rough riding. The following measures are taken to rectify the hogged rails
a. Cropping
b. Replacing
C. Welding
D. De-hogging

Buckling of Rails

Displacement of the track from its original position is known as buckling of rails.
Buckling of rails
Buckling of rails may take place due to the following reasons:
1. When the expansion gap is not sufficient.
2. When the bolt of fish plates are so tight that the rails are not allowed to expand.
3. Due to the presence of long welded rails on weak tracks.

Tilting of Rails

The art of placing the rails of a track at an inward slope of 1 in 20 is called tilting of rails. The main object of tilting of rails is to reduce the wear on inside edges of rails in a track. The required tilt is provided at rail seats in bearing plates, chairs and metal sleepers at the time of their casting.

The wooden sleepers, Which are used without bearing plates, are adzes to the required tilt of 1 in 20 at the rail seats.
............Read more (Function of rails)