Question
Download Solution PDFMatch List I with List II and select the correct answer from the combinations given below
List I | List II |
---|---|
a. Wire claw | 1. To clean the ballast. |
b. Jim crow | 2. To pack the ballast under sleeper. |
c. Beater | 3. To bend the rails. |
d. Mallet | 4. To sound the sleeper for packing. |
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Wire Claw
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The wire claw is a hand-held steel tool used to loosen and remove caked ballast from between and around the sleepers, especially in sections with limited access.
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It has curved, claw-like prongs that are ideal for reaching tight spots where machines cannot operate effectively.
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It ensures proper cleaning before re-tamping and helps maintain drainage and track performance.
Jim Crow
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A Jim crow is a manual or hydraulic rail bender, used to bend rails horizontally during laying of curves or to correct alignment deviations.
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It has a strong frame with a screw jack mechanism to apply lateral force to the rail web or head.
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It is essential during the initial laying of curved tracks and for adjusting rails during maintenance.
Beater
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A beater is a tamping tool used to compact ballast underneath sleepers manually. It is typically a flat or round heavy steel plate attached to a long handle.
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Track workers strike the ballast repeatedly to eliminate voids under sleepers and improve track stability.
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It is mainly used in small-scale maintenance where mechanized tamping machines are not employed.
Mallet
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A mallet is a soft-faced hammer, usually made of wood, rubber, or plastic, used for sounding sleepers to detect voids or loose support.
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When a sleeper is tapped, a hollow sound indicates inadequate ballast support, which signals the need for re-tamping.
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It prevents over-tamping and ensures maintenance is only carried out where required, saving time and resources.
Additional InformationTrack Gauge
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Used to measure and maintain the correct rail gauge (distance between inner faces of rails).
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It ensures track safety and prevents derailment.
Lining Bar
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Used to adjust the lateral position of rails to correct alignment during track laying or maintenance.
Fish Bolt Spanner
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A large wrench used to tighten or loosen bolts connecting rail joints (fish plates), ensuring strong and aligned rail connections.
Rail Tong / Rail Lifter
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Used to lift and position rails manually during replacement or realignment operations.
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