bogie under frame
DESCRIPTION
Presentation on fabrication of Bogie under frame used in worldwide Locomotive...:)TRANSCRIPT
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 suspension Four 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
WHEELSET Two brake disks (4), diameter
640 mm and width 110 mm. Two wheel discs of dia 915
(New), 845 (worn).
Wheel & Axle Assly
Brake Disc
DIMENSIONS OF WHEEL SET:
Wheel Disc:
WHEEL RE-PROFILING AND BALANCING: DYNAMIC BALANCING 320RPM LESS THAT/EQUAL TO 50GM.M GLUE THE NEEDED WEIGHTS.
DETAIL OF ADDED WEIGHTS:
AXLE BEARINGS CARTRIDGE TAPER
ROLLER BEARING PRE-ASSEMBLED UNIT. MAINTENANCE FREE-
OVERHAUL 1.2 MILLION KM.
CTRB
BRAKE CALLIPER UNITS
AXLE MOUNTED DISC BRAKE INBUILT SLACK ADJUSTER IN BRAKE
CYLINDERS CALLIPER 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 DAMPERS LATERAL DAMPERS YAW DAMPERS ANTI-ROLL BAR ANCHOR 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
THANKYOU