SUBMITTED TO:- SUBMITTED BY:-Dr. H.C. GARG YOGENDER KHOLAHON’BLE CHAIRPERSON 09162062DEPTT. OF MECH. ENGG. B.TECH. (ME) VII
INDIAN RAILWAY HISTORYIn 1849 GIPR was established by East India CompanyFirst train introduced to India in 1853 between Boribandar (later VT/CST) in Mumbai to ThaneBy 1946 all 42 rail systems taken over by govt. to make a single nationalized network
INTRODUCTION TO I.R. Indian railway is 4th largest railway network having route length of 64,460 kms.Over 12,000 trains daily transporting over 9 billion passengers and over 1050 million tones of freight per yearWorld’s largest public sector enterprise with 1.5 million employees
TRAIN MAINTENANCEWashing line :- after every 2500 kmSick line :- Schedule “A” maintenance- 1 month Schedule “B” maintenance- 3 months IOH- 9 months or 2,00,000 km POH- 18 months or 4,00,000 kmPlatform Train Duty:- on starting & ending stations
WORKS CARRIED IN WASHING LINEInspectionCleaning& washingBrake testingPrimary MaintenanceSecondary MaintenancePantry car provisionsWateringLoading of linenmaintenance of AC & electrical circuits of coaches
BRAKE TESTING IN WASHING LINEBrake testing is carried by using RTR (rack test rig)Rack testing rig is capable of testing full train (up to 24 coaches) at a time.
SECONDARY MAINTENANCEThe trains for the secondary maintenance are given at least 2 hrs on the washing lineLinen and pantry car provisionsWashing & cleaning of coachesMaintenance of AC of coaches
PRIMARY MAINTENANCE The trains for the primary maintenance are given at least 6 hrs at the washing line in addition to secondary maintenance Oil in hydraulic dash pots Wheel profiles are visually examined and gauged pest control treatment Axle box is examined for grease oozing out from rear cover Brake blocks & piston stroke checked & changed
SICK LINESick line is the workshop for the major and periodicalmaintenance of the coaches it consists of modernfacilities like pit for working under frame And cranefor separation of coach & bogie for repair of all typeof defects
COACH MAINTENANCEIn coach maintenance generally these work being done1. testing/maintenance of air conditioner.2. Maintenance of other electrical circuits like fan light etc.3. Buffer maintenance.4. Brake testing by S.C.T.R.
BUFFER MAINTENANCEBuffers are the horizontal shock absorbing parts with coupling the adjacent coaches of the train so need regular changing of shock absorbing rubber pads.
BRAKE TESTING Here S.C.T.R. use for testing of brake and its cylinder acts as the main reservoir. There are two pressure potentials i.e. 5kg/cm2 in brake pipe and 6kg/cm2 in feed pipe.
SEPARATION OF COACH & BOGIEAfter watching the inspection list if bogie needsrepair like filling of oil or changing of brake shoe etc.then bogie is separated from the coach by liftingthrough a crane
MAINTENANCE OF BOGIEMaintenance processes done on the bogie such as replacementof the Brocken, wear out parts, replacement of pins and brakeshoe, filling of oil in the suspensions, lubrication of differentparts, tightening of different screws and bolts and change ofaxle & wheels if required.
MAINTENANCE OF SUSPENSIONIn primary suspension mainly we have a spring and adashpot to provide damping arrangement so regularrefill of oil and changing of oil being done in theworkshop
CHANGE OF DEFECTIVE WHEELSWheels of train are subjected to a no of defects i.e.reduce in the dia. of wheels, Reduce in size of flange,break of bearing in axle box
BRAKE MAINTENANCEBrakes are the most important part of a train. Themaintenance of brakes consists of change of brakeblocks, adjust stroke length, change of brake cylinder,leakage in brake system etc.
PLATFORM TRAIN DUTY Rolling InRolling outAxle box feelingBrake Power CertificateSafe to Run
ROLLING IN/ROLLING OUT When train enters in station Examiner staff take up positions on both sides inspect the train enters at the speed of 8 km/h Whistling sound of hot axle boxes. Any hanging part or loose fitting of vehicle. Brake binding of any vehicle. Any component or spring suspension bracket loose/broken. Abnormal behaviour of vehicle.
AXLE BOX FEELINGAfter the train come to halt, all axle boxes are felt within 20 minutes. The temp. of axle is checked by touching with handTemp. is found high then it is checked by the temp. gun which gives exact temp.If this temp. is found more than 30 degree than atm. temp. then the cause is inspected and coach is sent to workshop
BRAKE POWER CERTIFICATE The incoming driver shall handover the brake power certificate to Reliving driver or Deposit it the nominated authority, who will give it to the outgoing Driver. The outgoing driver and guard will satisfy themselves from the listed coach numbers that the Brake Power Certificate pertains to their train.
SAFE TO RUNIf all of above factors like no hanging parts brakes areworking correctly the temp of axle box is with inrange and the train is in good and safe condition ofrunning then the train is announced as safe to run.
SUGGESTIONShunting should be done earlier then the working time i.e. before 9am so that complete utilization of available manpowerCoach should be lifted from both sides during separation of bogie to avoid damage to centre pivot.The brake blocks should replaced on bogies as a set.