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DESIGN FEATURES:
FIAT BOGIE
SUB-SYSTEMS
BOGIE FRAME Y-FRAME -STEEL SHEETS(St-52) TWO SIDE FRAMES CONNECTED BY TWO
CROSS BEAMS -SUPPORT BRAKE UNITS. BOGIE FRAME ON THE PRIMARY SPRINGS
AND SUPPORTS VEHICLE BODY THROUGH BOLSTER.
BOLSTER-BOGIE FRAME THROUGH SECONDARY SUSPENSION.
BOGIE FRAME
BOGIE FRAME
Primary Damper
Primary Spring assly
(Bogie frame lifted)
MATERIAL PROPERTIES:S355J2G3;EN10025
GS20Mn5V;DINl:17182
SG400/18;IS:1865
SG400/15;IS:1865
UTS IN Mpa 490-630 500 – 650 400 400YIELDSTRENGTHMpa
355 360 250 250
ELONGATION %AGE
22 24 18 15
IMPACT 27J AT -200C
70 J -- --
CHEMICAL%AGE:
C 0.23, Mn1.7, Si 0.6, S&P 0.045
C 0.17 to0.23, Si 0.60,Mn 1.00 to1.50, S0.020,P0.015, Cr 0.30, Mo 0.15, Ni0.40
---- ---
Primary suspensionFour nos each per bogie -nested coil
springs, primary vertical dampers, control arm, elastic joints-connecting the bearing on wheelset to bogie frame.
Flexible guidance.
Rubber Pad
Spring Guide Outer Spring
Inner Spring
Bump StopLower Spring Guide
(Primary exploded)
(Wheel set with Primary suspension)
Control Arm
Bearing Assly with earthing
eq./speed sensor
C
Primary Damper
(Wheel set with Primary springs removed)
Control Arm
Two brake disks (4), diameter 640 mm and width 110 mm.
Two wheel discs of dia 915 (New), 845 (worn).
Wheelset
Wheel & Axle Assly
Brake Disc
DIMENSIONS OF WHEEL SET:
Wheel Disc:
DYNAMIC BALANCING 320RPMLESS THAT/EQUAL TO 50GM.MGLUE THE NEEDED WEIGHTS.
Wheel Re-profiling and balancing:
DETAIL OF ADDED WEIGHTS:
CARTRIDGE TAPER ROLLER BEARING
PRE-ASSEMBLED UNIT. MAINTENANCE FREE-
OVERHAUL 1.2 MILLION KM.
Axle bearings
CTRB
BRAKE CALLIPER UNITS
AXLE MOUNTED DISC BRAKEINBUILT SLACK ADJUSTER IN BRAKE
CYLINDERSCALLIPER RATIO 1:2.17 FOR ALL
COACHES EXCEPT ACCN/SG & POWER CAR WHICH IS 1:2.48
35mm BRAKE PADS JURID 877/BECORIT984 KB &
SABWABCO.
BRAKE CALLIPER UNIT
SECONDARY SUSPENSION
NEST OF FLEXI-COIL SPRINGS INNER AND OUTER, RUBBER SPRING AND SECONDARY PAD
VERTICAL DAMPERSLATERAL DAMPERSYAW DAMPERSANTI-ROLL BARANCHOR LINKS
SECONDARY SUSPENSION
(With Bolster Lifted)Bogie Bolster
Nested Secondary
Spring Assembly
Yaw Damper
Sec. Vertical Damper
Cross Section
(With Secondary Spring System Exploded)Bogie Bolster
Miner Pad
Spring Guide
Outer Spring
Inner Spring
Rubber Spring
SECONDARY SUSPENSION
Lateral Damper
Lateral Bumpstop
Longitudinal Bumpstop
(Bolster removed)
Anti Roll Assly
Traction Lever Traction Center
Curve Roll
(X-section lifted)
ANTI-ROLL BAR:
A TORSION BAR WITH TWO FORKS- BETWEEN BOGIE FRAME & BOLSTER,CONNECTED BY ROLL LINKS.
RESISTS ROLLING MOTION OF COACH.AS PER UIC515-1 TILTING CO-EFFICIENT
<0.4.
ANTI-ROLL BAR:
A
Anti-roll assly
ANTI ROLL BAR
BUFFER HEIGHT ADJUSTMENT
Shims at body/bogie connection.Shims NOT added/removed in Primary
and Secondary Suspension for wheel wear compensation or buffer height adjustment.
BOGIE BODY CONNECTION:
BODY BOGIE CONNECTION
Principles of force transmission
Vertical forces: BODY-BOLSTER-MINER PAD-
SEC.SUSPENSION-BOGIE FRAME-PRIMARY SPRINGS/BALL JOINT CONTROL ARM-AXLES.
Lateral forces:
BODY-BOLSTER-MINER PAD/SEC.SPRINGS/LATERAL BUMP STOP-BOGIE FRAME-BALL JOINT CONTROL ARM-AXLES.
Traction and braking forces:
BODY-TRACTION CENTRE-TRACTION LEVER/LONGITUDINAL BUMP STOP-BOGIE FRAME-CONTROL ARM-AXLES.
A
Traction Center
CURVE NEGOTIATION:
CONTROL ARM (SGCI TO IS:1865) CONNECTING AXLE BEARING AND SIDE FRAME THROUGH ELASTIC CONNECTION.
FLEXIBILE GUIDANCE TO WHEELSET.
SUSPENSIONS OF VARIANTS
THE COMMON SUSPENSION GROUPS ARE: GS,SCN,SLR CC,EC,CB,FAC/EOG,ACCW/EOG. ACCN/EOG,FAC/SG,ACCW/SG ACCN/SG,WLRRM SIDE 2. WLRRM SIDE 1. SLR UNDERSLUNG.
Main Data:
Speed limit
Cleared upto 160KMPH.upto 200KMPH with magnetic
brakes/sintered brake pads.
RIDE INDEX
CHAIR CAR: VERTICAL 2.75 LATERAL 2.5
SELF-GENERATING BOGIE WITH V-BELT:
CARDAN SHAFT ARRGT. FOR 25KW ALTERNATOR
CARDAN SHAFT ARRGT. FOR 25KW
THANKYOU