What is tongue rail?

Tongue Rail: – It is a tapered movable rail, made of high-carbon or -manganese steel to withstand wear. – At its thicker end, it is attached to a running rail. – A tongue rail is also called a switch rail.

What is the purpose of a check rail?

In rail transport, guard rails or check rails are rails used in the construction of the track, placed parallel to regular running rail to keep the wheels of rolling stock in alignment to prevent derailment.

What is the length of tongue rail?

However, tongue rail of 7620mm length is used for in 8.5 thick web switch to drawing no RDSOIT-6280 for which end forged asymmetric rail of shorter lengths (10m to 12 m) may be used.

How do you measure for a tongue rail?

The wear shall be measured at a point with 13 mm head width and at the point where tongue and stock rails are at same level. This location is indicated in table at Annexure2/6/1. and 90R wwwww. on stock rail shall not exceed the limits laid down in para -302 of IRPWM.

What is the major advantage of straight tongue rails?

9. What is the major advantage of straight tongue rails? Explanation: Tongue rails are of two types, straight and curves. Straight rails have the advantage of easy manufacturing and can be used for right hand and left hand turnout.

What is tongue rail?

Tongue Rail: – It is a tapered movable rail, made of high-carbon or -manganese steel to withstand wear. – At its thicker end, it is attached to a running rail. – A tongue rail is also called a switch rail.

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What is tilting of rail?

Rails are tilted inward at an angle of 1 in 20 to reduce wear and tear on the rails as well as on the tread of the wheels. Tilting of Rails. Rails are tilted inward at an angle of 1 in 20 to reduce wear and tear on the rails as well as on the tread of the wheels.

What is St sleeper?

The steel trough (ST) sleeper has an average life of about 50 years. It is an acceptable type of sleeper for use with long welded rails because of its lateral stability and its adaptability for use along with elastic fastenings.

What is heel of switch?

A pair of tongue rails with their stock rails are commonly known as “points”. Heel of switch: is an imaginary point midway between the end of the lead rail and the tongue rail. In case of fixed heel switches, it is a point at the center of the heel block itself.

What is creep in railway?

Creep in rail is defined as the longitudinal movement of the rails in the track in the direction of motion of locomotives. Creep is common to all railways and its value varies from almost nothing to about 6 inches or 16cm.

What is lead rail?

The lead rail of an ordinary mine switch is the turnout rail lying between the rails of the main track.

What is the main function of sleeper?

(i) The primary function of a sleeper is to grip the rail to gauge and to distribute the rail loads to ballast with acceptable induced pressure. (ii) The side functions of a sleeper include the avoidance of both longitudinal and lateral track movement. (iii) It also helps to enhance correct line and level of the rails.

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What is nose of crossing?

The swing nose crossing consists basically of the two wing rails and the crossing block. The crossing block represents the movable element of the swing nose crossing. Depending on the direction of travel/position of the crossing, it can be in contact either with the right or left wing rail.

What are train kinks?

Kinks are formed when the end of the adjoining rails move slightly out of their aligned position.

Do ICE trains tilt?

Until the reason for the axle breaks is identified, the checked trains are operated with deactivated tilting system.

What is creep of rail?

Creep in rail is defined as the longitudinal movement of the rails in the track in the direction of motion of locomotives. Creep is common to all railways and its value varies from almost nothing to about 6 inches or 16cm.

Is code a sleeper?

HS Code 4406 | Harmonized System Code Of RAILWAY OR TRAMWAY SLEEPERS (CROSSTIES) OF WOOD.

What are the types of rail joints?

Different Types of Railway Joint
  • Common Rail Joint. Common rail joint is the most commonly used rail joint in the connecting of the steel rail, and it is usually with regular shape. …
  • Compromise Joint Bar. …
  • Joggled Rail Joint. …
  • Insulated Rail Joint. …
  • Glued Insulated Rail Joint.
Different Types of Railway Joint
  • Common Rail Joint. Common rail joint is the most commonly used rail joint in the connecting of the steel rail, and it is usually with regular shape. …
  • Compromise Joint Bar. …
  • Joggled Rail Joint. …
  • Insulated Rail Joint. …
  • Glued Insulated Rail Joint.

What are the different types of sleepers?

Types of sleepers: lion, wolf, bear and dolphin. The American sleep scientist, Michael Breus, revised the owls and larks model and identified a total of four types of sleepers.

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What is left hand turn out?

Turnout The combination of points and crossing of a railway track, is called a turn out. According to the direction of diversion, turnouts are classified as under:- Left hand turn out: The turnout which diverts the train to the left, is called a left hand turnout.

What type of sleepers are used in Indian Railways?

Based on the materials used, railway sleepers are classified into following types.
  • Wooden sleepers.
  • Concrete sleepers.
  • Steel sleepers.
  • Cast iron sleepers.
  • Composite sleepers.
Based on the materials used, railway sleepers are classified into following types.
  • Wooden sleepers.
  • Concrete sleepers.
  • Steel sleepers.
  • Cast iron sleepers.
  • Composite sleepers.
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