TYPES OF COUPLING SYSTEMS USED BY "INDIAN RAILWAYS"

TYPES OF COUPLING SYSTEMS USED BY "INDIAN RAILWAYS" (BROAD GUAGE)

DRAW AND BUFFING GEAR ASSEMBLY

Draw and buffing gears are attached to the end of one  coach and this two gear mechanisms are made to suit two adjacent coaches into an uniform continuous movement. They also transform the hauling force from main engine to the following rake, draw gear is specialized for these purpose, where as the buffing gears are essential for maintaining a vibration less motion of a coach with respect to its former one.

                       

We have two different arrangements of draw and buffing gear assembly in ICF and LHB coaches. They are-

FOR "CONVENTIONAL" ICF TYPE COACHES

SCREW COUPLER IN ICF COACHES

Screw coupling and the side buffers serves the aforesaid purpose in case of the draw and buffing gears respectively in case of ICF coaches. Screw coupling not only gives the boost but also let two coaches to connect in the formation of a continuous rake. The two jaws of the screw on both sides are guarded with spring and rubber to minimize the vibration the hauling force produces. They are called the DRAFT GEARS.

(img source : quora)

RAIL & LIFE (Stunning view of Parallel Rakes at Santragachi Station)

   

 

Innovative Design of "RDSO TRAIL COACH ( LHB SLR ) WITH UNDERSLUNG DG SET"

 RDSO TRAIL COACH ( LHB SLR ) WITH UNDERSLUNG DG SET

Hope you all have read the previous article "POWER SUPPLY SYSTEM IN INDIAN RAILWAY COACHES"
and " DEVELOPMENT HISTORY OF POWER GENERATION IN "LHB" AC/NAC"

There are mainly three types of power supply system namely SELF GENERATING , END ON GENERATION and HEAD ON GENERATION.

CONVENTIONAL DESIGN OF GENERATOR AND LUGGAGE CAR

                                   

DEVELOPMENT HISTORY OF POWER GENERATION IN "LHB" AC/NAC

POWER GENERATION IN MIX AC/NAC LHB

The "conventional" LHB uses EOG ( End On Generation ) . That is the rakes of the LHB are powered by Generator Cars, These are Diesel generators capable of producing 750KW at 750V 50Hz.
 There are two of these cars for Each train, both of which are positioned at the both (extreme) ends of the LHB rake. According to the Power Load these cars provide electricity to coaches for RMPU, lighting & other essentials.
But soon arises the need of running NAC LHB or A mix of AC/NAC LHB coaches, for which the existing Power cars were of over capacity. therefore,
So as to meet the satisfaction of the passengers, Higher capacity, the need for design and subsequent Running a mix of AC and NAC LHB Coaches  was felt. RCF has effectively begun fabricating Non-AC LHB and 276 such Coaches have gone into service till 31st March 2014 and dealing with Northern Railway, North Western Railway, Western Railway, East Central Railway and Eastern Railway.

LHB NAC (right) & AC (left) Coaches

CDTS & BIODIGESTER