Crossing

Crossing:

The crossing is a device provided at the intersection of two running rails to permit the wheel flanges, moving along one to pass across the other.

Component Parts of a Crossing:

• A Vee piece
• A point rail
• A splice rail
• Two check rails
• Two wing rails
• Heel blocks at throat, nose, and heel of crossing
• Chairs at crossing, at toe and at heel

REQUIREMENTS OF IDEAL CROSSING:

• Crossing assembly should be rigid enough to withstand severe vibrations.
• Wing rails and nose crossing should be able to resist heavy wear due to movement of wheels, hence should be manufactured of special steel(alloy steel)
• The nose of crossing should have adequate thickness to take all stresses acting on the crossing.