Practical Training undertaken at Coach Care Complex North Western Railway Jaipur

1. PRESENTATION ON PRACTICAL TRAINING
UNDERTAKEN AT
COACH CARE COMPLEX
NWR ,JAIPUR
SUBMITTED BY:-
ANIKET RATHORE
16ESKME025
BTECH (ME) 7TH SEM,SKIT,JAIPUR
SUBMITTED TO:-
MR. MANOJ KUMAR SAIN
DEPT. OF MECHANICAL ENGG.
Date-10 July 2019

2. TABLE OF CONTENTS:-
 History of Indian Railway
 Types of coaches
 LHB Coaches
 CDTS
 Air braking System
 Main components of Air Brake
 Working of Air Brake
 TRAIN MAINTENANCE
 Suspension system
 RAIL TRAVELLING CRANE
 Sick Line
 BUFFER MAINTENANCE

3. HISTORY OF INDIAN RAILWAY
 The first railway proposals for India were made in Madras in 1832
 India's first passenger train, hauled by three steam locomotives
(Sahib, Sindh and Sultan), ran for 34 kilometres (21 mi) with 400 people in 14
carriages on 1,676 mm (5 ft 6 in) broad gauge track between Bori Bunder
(Mumbai) and Thane on 16 April 1853.
 Indian Railways (IR) is India’s national railway system operated by the Ministry of
Railways.
 It manages the fourth largest railway network in the world by size.

4. TYPES OF COACHES
 Indian railway uses the two types of coaches.
1. ICF Coach
2. LHB coach
 ICF Coaches is a conventional railway bogie used
on the majority of Indian Railway main line
passenger coaches.
 The design of the bogie was developed by ICF
(Integral Coach Factory), Perambur, Chennai, India.
The ICF design refers to the conventional design
of coaches seen across trains in India.

5. LHB Coaches
 LHB Coaches are the passenger compartments of Indian Railways
that have been developed by Linke-Hofmann-Busch of Germany.
 The coaches are designed for an operating speed up to 160 km/h
and could go up to 200 km/h. However, they have been tested up
to 180 km/h.
 During collision or derailment, the LHB coaches do not climb onto
adjacent coaches, due to the use of Center Buffer Coupling (CBC),
instead of the Dual Buffer System used in ICF coaches.
 The LHB coaches are 1.7 meters longer than the conventional ICF
coaches. This enhances the seating capacity of the LHB coaches.
 The weight per meter of the LHB coach is less than the ICF coach
and is easier to haul.
 Noise generated by LHB coaches is 40% less than the ICF
coaches.
 The LHB coaches are anti-telescopic. These coaches do not
penetrate into the adjacent coaches in case of accidents.

6. CONTROLLED DISCHARGE TOILET
SYSTEM(CDTS)
 LHB COACHES ARE FITTED WITH CONTROLLED DISCHARGE TOILET UNITS TO AVOID SOILING
OF TRACK IN STATION. THE TOILET SYSTEM IS DESIGNED TO OPERATE WITH A PRESSURIZED
WATER BOWL WASH THE COVERS 100% OF THE TOILET BOWL AREA. THE WASTE IS
REMOVED FROM THE TOILET BOWL AND TRANSFERRED TO A RETENTION TANK WITH A
MINIMAL AMOUNT OF WATER.
 WATER CONSUMPTION IS ONLY 2.5 LITERS PER FLUSH CYCLE FOR THE INDIAN STYLE TOILET
BOWL AND 1.5 LITERS FOR THE EUROPEAN STYLE TOILET BOWL.
 THIS SYSTEM WORKS ON ELECTRICAL AND PNEUMATIC PRESSURE ARRANGEMENT.
 THIS SYSTEM STARTS WORKING ON A SINGLE PUSH OF FLUSH SWITH. AS TH FLUSH SWITCH
IS PRESSED, WATER FLOWS INTO THE TOILET BOWL AND THE UPPER SIDE VALVE OPENS
WHICH IS CONNECTED BETWEEN THE TOILET BOWL AND RETENTION TANK. ALL THE TOILET
WASTE IS TRANSFERRED INTO THE RETENTION TANK.
 THE LOWER SIDE VALVE OF RETENTION TANK OPENS AND THE TOILET WASTE
ACCUMULATED IN THE TANK IS DISCHARGED OUT OF THE TANK TO THE RAIL SIDE, AWAY
FROM STATION AND CITY.

7. AIR BREAKING SYSTEM
.Air Brake System: Brakes applied with the help of air are called Air Brakes and the
system actuated to apply this phenomenon is known as Air BrakeSystem
 On the basis of type of release, air brake system is classified as:
 DIRECT RELEASE SYSTEM
 Air released immediately in single pass, as soon as releasing of brakes is
initiated.
 E.g.: freight trains
 GRADUATE RELEASE SYSTEM
 Brake cylinder pressure can be reduced gradually in steps in proportion to the
increase in brake pipe pressure.
 E.g.: passenger trains

8. Main components of Air brake
 1) Compressor:-Compresses the air it draws from atmosphere for the use in AB and
other pneumatic devices on train.
 2) Main reservoir:-Store compressed air for braking and other pneumatic
applications.
 3)Breaking pipe(BP) and Feed pipe(FP):-They run throughout the length of the
coach. They are coupled to one another by hose coupling to form a continuous air
supply from locomotive to the rear end of train.

4)Auxiliary Reservoir:-It is continuously charged through feed pipe. This ensures full
break force during emergency in case of leakage in break cylinder.
 5)Distributor:- A distributor is simply a sophisticated triple valve. It is connected to
Brake Pipe, Auxiliary Reservoir and Brake Cylinder.

9. Working of Air brakes
 when no brakes are applied, the Brake cylinder is connected to
atmosphere through a hole in distributor valve. To apply brakes,
the driver move the handle. With this movement, the BP
pressure is reduced. This decrease in Pressure is sensed by the
distributor valve against the Control Reservoir pressure. Air from
the auxiliary reservoir enters the break cylinder and the breaks
are applied. The diagram below shows the position of Break
Cylinder, Auxiliary Cylinder ,distributor (triple valve) in Brake
application.
 Single Coach Test Rig use for testing of brake and its cylinder acts as
the main reservoir.

11. TRAIN MAINTENANCE
 Washing line :-
 after every 2500 km
 Sick line :-
 Schedule “A” maintenance- 1 month Schedule “B” maintenance- 3
months
 Intermeate Overhauling(IOH)- 9 months or 2,00,000 km
 Periodic Overhaul(POH)- 18 months or 4,00,000 km
 Platform Train Duty:-
 on starting & ending stations

12. Suspension system
There are mainly 2 types of suspension for the trains
Primary Suspension:
The primary suspension mainly consists of normal spring damper system which is used for
structural suspension of the train. They are present in every bogie between the axle box and
the bogie.
Secondary Suspension:
This the airbag that is present between the car
and bogie frame as shown in the figure
above. This is primarily to aid comfort the
passengers travelling. Secondary suspension
is generally a pneumatic suspension

13. RAIL TRAVELLING CRANE
 Have two crane hooks
 Main hook(35 ton capacity)
 Auxiliary hook(5 ton capacity

14. Sick Line
 Sick line is the workshopfor the major
and periodical maintenance of the
coaches it consists of modern facilities
like pit for working under frame And
crane for separation of coach & bogie for
repair of all type of defects
BUFFER MAINTENANCE
 Buffers are the horizontal shock
absorbing parts with coupling the
adjacent coaches of the train so need
regular changing of shock absorbing
rubber pads.

15. THANK YOU