BOGIE MOUNTED BRAKE SYSTEM,INDIAN RAILWAYS.

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BOGIE MOUNTED BRAKE SYSTEM INDIAN
RAILWAYS Created by A.srinivas,junior
engineer, Wagon workshop, rayanapadu,vijayawada. O
pen in PPTX only
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BOGIE MOUNTED BRAKE SYSTEM
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AUTOMATIC PRESSURE MODIFICATION EL-60 VALVE
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EMPTY
APM RESERVIOR
BC2
BC1
DV
CPB
APM
2.2
3.8
Created by A.srinivas JE/AB/WWS/GTPL/SCR
SENSOR ARM
104mm
Created by srinivas

• AUTOMATIC PRESSURE MODIFICATION-
• APM device is interposed between bogie side frame
  of Casnub bogie and the under frame of wagons.
• APM should sense the gap only at the time of air
  brake application.
• During remaining time it should not be in contact
  with the bogie side frame.

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LOAD
APM RESERVIOR
BC2
BC1
DV
CPB
APM
3.8
3.8
Created by A.srinivas JE/AB/WWS/GTPL/SCR
Created by srinivas
Created by srinivas
AUTOMATIC PRESSURE MODIFICATION-
It restricts the brake cylinder pressure
coming from the Distributor valve to 2.2 0.25
Kg/cm2 in empty condition of the wagon and allows
the brake cylinder pressure of 3.8 0.1 Kg/cm2
in loaded condition of the wagon. The
factory setting for the movement of the sensor
point is 104mm which is consisting of loaded
empty zone. First 79mmtop-bottom of the sensor
point is for LOADED ZONE the balance 25mm
bottom-top is for the EMPTY ZONE.
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BOGIE MOUNTED BRAKE SYSTEM
BP HOSE
COAC
COAC
DC
6kg/cm2
Created by A.srinivas JE/AB/WWS/GTPL/SCR
FP HOSE
FP HOSE
FP
ISOLATING COCK
DC
5kg/cm2
3.5kg/cm2
COAC
COAC
BP
BP
CPB
BP HOSE
BP HOSE
6 kg/cm2
APM
NRV
3.8
T FLANGE
DV (WITH OUT PT)
APM RESERVIOR
AR 100 LTRs
ISO.COCK WITH VENT
FLEXIBLE HOSE PIPE
10 BC FOR BOGIE 1 (WITH HANDBRAKE CABLES)
EMPTY 2.2
LOAD 3.8
Created by srinivas
10 BC FOR BOGIE 2
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BMBS-BRAKE CYLINDER

GASKET
Created by A.srinivas JE/AB/WWS/GTPL/SCR
PISTON
INDICATOR ASSLY.
BC PIN
COMPR.SPRING 3
LOCKING STUD
CLUTCH
COMPENSATOR
SAB SPRING
RAM ASSEMBLY
COMPR.SPRING 1
COMPR.SPRING 2
Created by srinivas
The brake cylinder receives pneumatic
pressure from auxiliary reservoir after being
regulated through the distributor valve and APM
device. Brake cylinder develops mechanical brake
power by outward movement of its piston with ram
assembly.
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BMBS-BRAKE CYLINDER

BC PRESSURE
Created by A.srinivas JE/AB/WWS/GTPL/SCR
PISTON STROKE 54/-10mm
Created by srinivas
The piston rod assembly is connected to the
brake shoes through a system of rigging
arrangement to amplify and transmit the brake
power. The compression spring provided in the
brake cylinder brings back the ram thus the
rigging is also brought to its original position
when brake is released.
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BMBS-BRAKE CYLINDER

BC PRESSURE
Created by A.srinivas JE/AB/WWS/GTPL/SCR
Created by srinivas
The built-in slack adjuster compensates for
the wear of brake blocks during the brake
application through equivalent pay-out. For
paying-in, a pry bar is applied between the brake
shoe and wheel and the rigging is pushed in.
The brake cylinder has got a double acting slack
adjuster as a result the actuator of brake
cylinder will continue to move out till all the
slack in the system is take care off and reaction
force of the wheels is encountered.
This ensures that every time every time the brake
application takes place,sufficient brake force is
delivered on the wheels. The brake cylinder
compensates for any change in gap between brake
block and wheel through the inbuilt slack
adjuster.
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BOGIE MOUNTED BRAKE SYSTEM
BK.BLOCK
BELL CRANK LEVER
WHEEL SET
PUSH RODs
Created by A.srinivas JE/AB/WWS/GTPL/SCR
DOUBLE ACTING
BMBS BOGIE TOP VIEW
PRIMARY BEAM
SECONDARY BEAM
BC PIN
EYE PIN
CLEVIS PIN
Created by srinivas
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BOGIE MOUNTED BRAKE SYSTEM
Created by A.srinivas JE/AB/WWS/GTPL/SCR
BMBS BOGIE TOP VIEW
Created by srinivas
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BOGIE MOUNTED BRAKE SYSTEM

• NEED FOR ADOPTION OF BMBS
• IN FREIGHT STOCK
• In order to overcome the problem faced in
  conventional bogie breakage, missing
  components and malfunctioning of SAB. In BMBS
  fitted wagons, BC is equipped with in built SAB.
• In conventional BOXN/BCN wagons due to frequent
  theft of control rod, main pull
  Rod, End pull rod Brake Rigging parts in
  tripling operation of wagons causing
  poor brake power in Rakes, resulting Detentions
  of wagons. In BMBS, wagons these Items are
  eliminated.
• In order to Improve Mechanical
  efficiency of brake power.
• In a Normal Rake of BOXN wagon Fitted with
  conventional type brake system there was around
  18 Brake fading after a trial run of 1000 Km.
  But In case of BMBS fitted Rakes No brake fading
  is observed
• after around 5000 km Trial Run.
  

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BOGIE MOUNTED BRAKE SYSTEM

• NEED FOR ADOPTION OF BMBS
• IN FREIGHT STOCK
• Braking distance of conventional Rake of 58 1
  wagons of BOXN is 1350 m.
• However in BMBS wagons it is 880 m
  (approx).
• In conventional wagons setting of A Dimension
  was a major problem. If any change made in sleeve
  nuts of E/L device that may create to heavy loss
  of wagon creating brake binding / wheel skidding.
  In order to overcome this, BMBS fitted wagons
  came into field which contains in built slack
  adjuster.
• In case of BMBS system Automatic Load sensing
  Device is used which Gives 2.2Kg/cm2 Pressure to
  brake cylinder during empty condition 3.8 Kg/cm2
  pressure during loaded for avoiding the above
  Problems.

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BOGIE MOUNTED BRAKE SYSTEM
SILENT FEATURES
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BOGIE MOUNTED BRAKE SYSTEM
SILENT FEATURES
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BOGIE MOUNTED BRAKE SYSTEM
DISADVANTAGES
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All effects created with power point,some effects
goes wrong Due to not supporting
powerpoint Further information plz.contact avutapa
llysrinivas_at_gmail.com
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Thank you