FACULTY OF ENGINEERING
REPORT ON MODEL MAKING
THE ROAD AND RAIL CROSSING
A level crossing is an intersection where a railway line crosses a road or path at the same level. The term also applies when a light rail line with separate right-of-way or reserved track crosses a road in the same fashion. Other names include railway crossing, grade crossing, road through railroad, and train crossing. Railway level crossings are the location where a road and railway line intersect at grade (at the same level) allowing road users (including pedestrians and cyclists) to travel over the railway tracks.
The barrier provides has to provide a mechanism by which it lowers when a train approaches from either direction or raising it again when the train has passed. Early level crossings had a flagman in a nearby booth that would, on the approach of a train, wave a red flag or lantern to stop all traffic and clear the tracks. Manual or electrical closable gates that barricaded the roadway were later introduced. The gates were intended to be a complete barrier against intrusion of any road traffic onto the railway. The first U.S. patent for such crossing gates was awarded on 27 August 1867, to J. Nason and J. F. Wilson, both of Boston. Today radar sensor systems for automatic level crossing free detection are a cheap way to improve safety.
The objective of this project is to construct a model version of an effective rail and road crossing made of a simple lifting barrier. APPARATUS
Remote control and a remote receiver
DC motor ( Meccano motor)
Step down transformer
Cells for the remote
Plug and Connecting wires
Fix the receiver into the metallic case
Connect the remote receiver to the motor and step down transformer -
Assemble the gears in such a way that they have a linkage with the...
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