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TRIPPER POWER CALCULATION FOR DMW DESIGN (HNPCL) Sl No

SYMBOL B L H Cd Vb V mg mb Th1 θ1 θ2 Rb Rbs Nt Nbs Db W Dw Lb Cs hs m k

24 25 26

DESCRIPTION Belt width Tripper length Vertical lift of material on tripper Design capacity Belt speed Tripper speed Weight of material Weight of belt Belt tension at tripper Belt inclination at discharge pulley Belt inclination at bend pulley Bend pulley resistance Belt sealing roller resistance Number of bend and discharge pulleys Number of belt sealing rollers Wheel axle diameter at bearing Estimated total weight of tripper Wheel diameter Length of skirt board on the tripper Skirt board friction factor Depth of material touching skirtboard Coeficient of friction for bearing Coefficient of rolling friction Factor for friction between rail and wheel flange Coefficient of adhesion Acceleration value of tripper

27 28 29 30

Tripper resistance Resistance due to bend pulley Resistance due to belt sealing Approx pull due to CRD

Te1 Te2 Te3 Te4

31

Force required to lift the material and belt

Te5

32 33 34 35 36 37 38

Resistance due to belt tension difference Resistance due to tripper acceleration Skirt board resistance Total tripper resistance Motor power required Taking 20% margin, power required Motor Power selected

Te6 Te7 Te8 F Pr Pm P

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

f fa a

VALUE 1600 18.7 5 1680 2.8 9.42 166.67 24.35 3315 14 2.2 882.9 441.45 2 4 0.14 22000 0.3 6 0.0754 6.3 0.015 0.0005

2.5 0.15 0.0314 POWER CALCULATION 568.33 180 180 0

UNIT mm m m tph m/s m/min kg/m kg/m kg degrees degrees N N

Minimum 10% of belt speed if not specified

Consider a resistance of 200lbs. Rbs=Rb/2

m kg m m inch

Consider 10% of the belt width

m/s²

NTPC stipulation Considering an acceleration time of 5 secs

kgf kgf kgf kgf

Te1= (f x W) x (2 x k + m x Db))/Dw Te2= Rb x Nt/9.81 Te3=Nbs x Rbs/9.81 Cable festoon envisaged

955.1 kgf 96.03 70.42 80.44 2130.32 4.101318693 4.921582432 2 x 3.7 kW

REMARK

kgf kgf kgf kgf kW kW

Te5= (Wb+Wm) x H Te6=Th1 x (cosθ2- cos θ1) Te7= W x a/9.81 Te8= Lb x ( Cs x hs² + 6 )/2.2 F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 Pr=F x V/60000/.8 Hence Ok

TRIPPER POWER CALCULATION FOR ELECON DESIGN (GIPCL) Sl No

24 25 26

DESCRIPTION Belt width Tripper length Vertical lift of material on tripper Design capacity Belt speed Tripper speed Weight of material Weight of belt Belt tension at tripper Belt inclination at discharge pulley Belt inclination at bend pulley Bend pulley resistance Belt sealing roller resistance Number of bend and discharge pulleys Number of belt sealing rollers Wheel axle diameter at bearing Estimated total weight of tripper Wheel diameter Length of skirt board on the tripper Skirt board friction factor Depth of material touching skirtboard Coeficient of friction for bearing Coefficient of rolling friction Factor for friction between rail and wheel flange Coefficient of adhesion Acceleration value of tripper

f fa a

27 28 29 30

Tripper resistance Resistance due to bend pulley Resistance due to belt sealing Approx pull due to CRD

Te1 Te2 Te3 Te4

31

Force required to lift the material and belt

Te5

963.82664 kgf

32 33 34 35 36 37 38

Resistance due to belt tension difference Resistance due to tripper acceleration Skirt board resistance Total tripper resistance Motor power required Taking 20% margin, power required Motor Power selected

Te6 Te7 Te8 F Pr Pm P

92.93 kgf 127.42 kgf 74.15 kgf 1976.65664 kgf 6.059688012 kW 7.271625614 kW 2 X 5.5Kw

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

SYMBOL B L H Cd Vb V mg mb Th1 θ1 θ2 Rb Rbs Nt Nbs Db W Dw Lb Cs hs m k

VALUE

UNIT 1400 mm 18.07 m 5.308 m 1500 tph 2.65 m/s 15 m/min 157.23 kg/m 24.35 kg/m 6600 kg 9.626 degrees 0 degrees 882.9 N 441.45 N 2 4 0.14 m 25000 kg 0.75 m 6m 0.0754 5.51 inch 0.015 0.0005

2.5 0.15 0.05 m/s² POWER CALCULATION 258.33 kgf 180 kgf 180 kgf 100 kgf

REMARK

Minimum 10% of belt speed if not specified

Consider a resistance of 200lbs. Rbs=Rb/2

Consider 10% of the belt width Referring to NITC publication

Considering an acceleration time of 5 secs Te1= (f x W) x (2 x k + m x Db))/Dw Te2= Rb x Nt/9.81 Te3=Nbs x Rbs/9.81 Cable festoon envisaged Te5= (Wb+Wm) x H Te6=Th1 x (cosθ2- cos θ1) Te7= W x a/9.81 Te8= Lb x ( Cs x hs² + 6 )/2.2 F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 Pr=F x V/60000/.8 OK

TRIPPER POWER CALCULATION FOR MBECL DESIGN (UKAI, CHANDRAPURA) Sl No

24 25 26

DESCRIPTION Belt width Tripper length Vertical lift of material on tripper Design capacity Belt speed Tripper speed Weight of material Weight of belt Belt tension at tripper Belt inclination at discharge pulley Belt inclination at bend pulley Bend pulley resistance Belt sealing roller resistance Number of bend and discharge pulleys Number of belt sealing rollers Wheel axle diameter at bearing Estimated total weight of tripper Wheel diameter Length of skirt board on the tripper Skirt board friction factor Depth of material touching skirtboard Coeficient of friction for bearing Coefficient of rolling friction Factor for friction between rail and wheel flange Coefficient of adhesion Acceleration value of tripper

f fa a

27 28 29 30

Tripper resistance Resistance due to bend pulley Resistance due to belt sealing Approx pull due to CRD

Te1 Te2 Te3 Te4

31

Force required to lift the material and belt

Te5

32 33 34 35 36 37 38

Resistance due to belt tension difference Resistance due to tripper acceleration Skirt board resistance Total tripper resistance Motor power required Taking 20% margin, power required Motor Power selected

Te6 Te7 Te8 F Pr Pm P

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

SYMBOL B L H Cd Vb V mg mb Th1 θ1 θ2 Rb Rbs Nt Nbs Db W Dw Lb Cs hs m k

VALUE 1200 8 3.05 960 2.5 15 106.67 24.35 6600 12 2.2 882.9 441.45 2 4 0.1 25000 0.5 6 0.0754 4.72 0.015 0.0005

2.5 0.15 0.05 POWER CALCULATION 312.5 180 180 100

UNIT mm m m tph m/s m/min kg/m kg/m kg degrees degrees N N

Minimum 10% of belt speed if not specified

Consider a resistance of 200lbs. Rbs=Rb/2

m kg m m inch

Consider 10% of the belt width NTPC stipulation Referring to NITC publication

m/s²

Considering an acceleration time of 5 secs

kgf kgf kgf kgf

Te1= (f x W) x (2 x k + m x Db))/Dw Te2= Rb x Nt/9.81 Te3=Nbs x Rbs/9.81 Cable festoon envisaged

399.611 kgf 139.36 127.42 68.7 1507.591 4.621708659 5.546050391 2 X 3.7 Kw

REMARK

kgf kgf kgf kgf kW kW

Te5= (Wb+Wm) x H Te6=Th1 x (cosθ2- cos θ1) Te7= W x a/9.81 Te8= Lb x ( Cs x hs² + 6 )/2.2 F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 Pr=F x V/60000/.8 OK

TRIPPER POWER CALCULATION FOR L T DESIGN (CSEB KORBA) Sl No

SYMBOL B L H Cd Vb V mg mb Th1 θ1 θ2 Rb Rbs Nt Nbs Db W Dw Lb Cs hs m k

24 25 26

DESCRIPTION Belt width Tripper length Vertical lift of material on tripper Design capacity Belt speed Tripper speed Weight of material Weight of belt Belt tension at tripper Belt inclination at discharge pulley Belt inclination at bend pulley Bend pulley resistance Belt sealing roller resistance Number of bend and discharge pulleys Number of belt sealing rollers Wheel axle diameter at bearing Estimated total weight of tripper Wheel diameter Length of skirt board on the tripper Skirt board friction factor Depth of material touching skirtboard Coeficient of friction for bearing Coefficient of rolling friction Factor for friction between rail and wheel flange Coefficient of adhesion Acceleration value of tripper

27 28 29 30

Tripper resistance Resistance due to bend pulley Resistance due to belt sealing Approx pull due to CRD

Te1 Te2 Te3 Te4

31

Force required to lift the material and belt

Te5

32 33 34 35 36 37 38

Resistance due to belt tension difference Resistance due to tripper acceleration Skirt board resistance Total tripper resistance Motor power required Taking 20% margin, power required Motor Power selected

Te6 Te7 Te8 F Pr Pm P

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

f fa a

VALUE 1400 11.4 4.55 1000 2.2 12.5 126.26 24.35 5854 15 2.2 882.9 441.45 2 4 0.14 21200 0.3 6 0.0754 5.51 0.015 0.0005

2.5 0.15 0.041666667 POWER CALCULATION 547.67 180 180 0

UNIT mm m m tph m/s m/min kg/m kg/m kg degrees degrees N N

Minimum 10% of belt speed if not specified

Consider a resistance of 200lbs. Rbs=Rb/2

m kg m m inch

Consider 10% of the belt width NTPC stipulation Referring to NITC publication

m/s²

Considering an acceleration time of 5 secs

kgf kgf kgf kgf

Te1= (f x W) x (2 x k + m x Db))/Dw Te2= Rb x Nt/9.81 Te3=Nbs x Rbs/9.81 Cable festoon envisaged

685.2755 kgf 195.16 90.04 74.15 1952.2955 4.98750491 5.985005892 2 x 5.5 kW

REMARK

kgf kgf kgf kgf kW kW

Te5= (Wb+Wm) x H Te6=Th1 x (cosθ2- cos θ1) Te7= W x a/9.81 Te8= Lb x ( Cs x hs² + 6 )/2.2 F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 Pr=F x V/60000/.8 Hence Ok

POWER CALCULATION FOR TRF (AMARKHANTAK TPP) Sl No

24 25 26

DESCRIPTION Belt width Tripper length Vertical lift of material on tripper Design capacity Belt speed Tripper speed Weight of material Weight of belt Belt tension at tripper Belt inclination at discharge pulley Belt inclination at bend pulley Bend pulley resistance Belt sealing roller resistance Number of bend and discharge pulleys Number of belt sealing rollers Wheel axle diameter at bearing Estimated total weight of tripper Wheel diameter Length of skirt board on the tripper Skirt board friction factor Depth of material touching skirtboard Coeficient of friction for bearing Coefficient of rolling friction Factor for friction between rail and wheel flange Coefficient of adhesion Acceleration value of tripper

f fa a

27 28 29 30

Tripper resistance Resistance due to bend pulley Resistance due to belt sealing Approx pull due to CRD

Te1 Te2 Te3 Te4

31

Force required to lift the material and belt

Te5

32 33 34 35 36 37 38

Resistance due to belt tension difference Resistance due to tripper acceleration Skirt board resistance Total tripper resistance Motor power required Taking 20% margin, power required Motor Power selected

Te6 Te7 Te8 F Pr Pm P

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

SYMBOL B L H Cd Vb V mg mb Th1 θ1 θ2 Rb Rbs Nt Nbs Db W Dw Lb Cs hs m k

VALUE 1000 12.9 5.375 500 2 10 69.44 24.35 3000 15 2.2 882.9 441.45 2 4 0.115 16000 0.3 6 0.0754 3.94 0.015 0.0005

2.5 0.15 0.033333333 POWER CALCULATION 363.33 180 180 100

UNIT mm m m tph m/s m/min kg/m kg/m kg degrees degrees N N

Minimum 10% of belt speed if not specified

Consider a resistance of 200lbs. Rbs=Rb/2

m kg m m inch

Consider 10% of the belt width NTPC stipulation Referring to NITC publication

m/s²

Considering an acceleration time of 5 secs

kgf kgf kgf kgf

Te1= (f x W) x (2 x k + m x Db))/Dw Te2= Rb x Nt/9.81 Te3=Nbs x Rbs/9.81 Cable festoon envisaged

504.12125 kgf 100.01 54.37 64.14 1545.97125 3.159578742 3.791494491 1.5 + .75 kW

REMARK

kgf kgf kgf kgf kW kW

Te5= (Wb+Wm) x H Te6=Th1 x (cosθ2- cos θ1) Te7= W x a/9.81 Te8= Lb x ( Cs x hs² + 6 )/2.2 F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 Pr=F x V/60000/.8 Not OK