The main function of a fish plate isa)to join the two rails togetherb)...
The rails are to be connected at their ends. This is achieved by means of a pair of fish plates per rail.The holes are drilled through the plates and the web of rails and then the fish bolts and nuts are provided in these holes.
When the bolts and nuts are tightened up, the rails are joined together and a continuous track is formed.
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The main function of a fish plate isa)to join the two rails togetherb)...
Fish plates, also known as joint bars or splice bars, are an essential component in railway track systems. Their main function is to join two rails together at the rail joints. This helps in maintaining the continuity and stability of the track, ensuring smooth and safe train operations. Let's dive into the details of why option 'A' is the correct answer.
1. Joining Rails Together:
The primary purpose of a fish plate is to connect or join two rails together. In a railway track system, rails are manufactured in standard lengths and are laid end to end to cover the required distance. However, due to practical limitations, it is not possible to lay an entire track length with a single rail. Therefore, rails are joined using fish plates at regular intervals to achieve the desired track length.
2. Ensuring Continuity:
By joining the rails, fish plates ensure the continuity of the track. They help in maintaining the alignment and level of the rails, preventing any discontinuity or misalignment that can cause derailments or accidents. The fish plates provide a secure connection between the rails, allowing the train wheels to transition smoothly from one rail to another.
3. Distributing Loads:
Fish plates play a crucial role in distributing the loads imposed by passing trains. When a train passes over the track, the weight of the train and its dynamic forces are transferred to the rails. The fish plates help in distributing these loads evenly across the joint, preventing excessive stress and strain on the rails. This helps in preventing rail failures and ensures the longevity of the track.
4. Providing Flexibility:
While the rails are rigid structures, they need to accommodate changes in temperature and other environmental factors. Rails tend to expand and contract due to temperature variations, and the fish plates allow for this movement. They provide a flexible connection that allows the rails to expand and contract freely without causing any damage or buckling.
In conclusion, the main function of a fish plate is to join two rails together at the rail joints. They ensure the continuity, stability, and safety of the track by distributing loads and accommodating rail movements. Fish plates are a critical component of railway track systems, enabling smooth and efficient train operations.