These are the arrangements provided in a railway track to divert a train from main line to branch line. Optimisation of railway switches and crossings core. We use them to guide trains from one track to another and to enable lines to cross paths. Ppt indian railway powerpoint presentation free to. The track is a fundamental part of the railway infrastructure and represents the. A gap is provided from throw to the nose of crossing check rails assures the correct movement and guides the wheels properly. Inspection and maintenance of points and crossings. Inspection and maintenance of railway points and crossings. Condition of tongue rails and stock rails there should be no wear on the top as well as the gauge face side of the tongue. Railway track material points and crossing, switches.
In indian railways, points and crossings constitute a very important infrastructure of a railway system. Railways permanent way manual shall be replaced by the following. Points and crossings should be inspected in detail, as the quality of a train ride greatly depends on their maintenance. Bcr2a09 railroad track design including asphalt trackbeds preconference workshop introduction to railroad track structural design don uzarski, ph. Removed mandating of 2m manual geometry measurements and added. View points and crossing railways ppts online, safely and virusfree. The following terms are often used in the design of points and crossings. Based on indian railway and metro system a free powerpoint ppt presentation displayed as a flash slide show on id. The points or switches aid in diverting the vehicles and the crossings provide gaps in the rails so as to help the flanged wheels to roll over them. It is an imaginary point on the gauge line midway between the end of lead rail and. They can be used and spiked like regular ties, cost about 50% less and save on trees. This dos and dont handbook on point and crossing has. Railway technical website page 4 updated 10th may 2017 come on the market. Laserbased obstacle detection at railway level crossings.
Almost all the tracks on indian railways is now with psc sleepers. Points and crossings railway railway signalling concepts. A crossing is a instrument which is installed at the junction where two rails cross to ensure the wheel flange of trains to pass from one track to the another. Download fulltext pdf download fulltext pdf laserbased obstacle detection at railway level crossings article pdf available in journal of sensors 2016. Pdf railway turnout failure mode analysis researchgate. The crossing in the middle where the rails meet is called the frog. Switches and crossings play an essential role in connecting the rail network. Crossings a crossing or frog is a device introduced at the point where two gauge faces cross each other to permit the flanges of a railway vehicle to pass from one track to another. Points, crossings and yards of railways 1 points and crossings. Palsson, optimisation of railway crossing geometry considering a set of. Pdf recently, the new ways to improve the railway switches and crossings. The throw bar or tie bar ties the points together and controls their movement from side to side. The hidden story of rail from its manufacture at tata steels huge works in scunthorpe, through to its management in track, the factors which reduce its l. Pdf design of highspeed turnouts and crossings researchgate.
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