TRIPPER FOR DMW DESIGN (HNPCL) 1 Belt width B 1600 mm 2 Tripper length L 18.7 m 3 Vertical lift of material on tripper H 5 m 4 Design capacity Cd 1680 tph 5 Belt speed Vb 2.8 m/s 6 Tripper speed V 9.42 m/min Minimum 10% of belt speed if not specified 7 Weight of material mg 166.67 kg/m 8 Weight of belt mb.35 kg/m 9 Belt tension at tripper Th1 3315 kg 10 Belt inclination at discharge pulley θ1 14 degrees 17 Estimated total weight of tripper W 22000 kg 21 Depth of material touching skirtboard hs 6.3 inch Consider 10% of the belt width 22 Coeficient of friction for bearing m 0.015 23 Coefficient of rolling friction k 0.0005 NTPC stipulation 26 Acceleration value of tripper a 0.0314 m/s² Considering an acceleration time of 5 secs 27 Tripper resistance Te1 568.33 kgf Te1= (f x W) x (2 x k + m x Db))/Dw 30 Approx pull due to CRD Te4 0 kgf Cable festoon envisaged 31 Force required to lift the material and belt Te5 955.1 kgf Te5= (Wb+Wm) x H 32 Resistance due to belt tension difference Te6 96.03 kgf Te6=Th1 x (cosθ2- cos θ1) 33 Resistance due to tripper acceleration Te7 70.42 kgf Te7= W x a/9.81 34 Skirt board resistance Te8 80.44 kgf Te8= Lb x ( Cs x hs² + 6 )/2.2 35 Total tripper resistance F 2130.32 kgf F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 36 Motor power required Pr 4.101318693 kw Pr=F x V/60000/.8 37 Taking 20% margin, power required Pm 4.9215832 kw 38 Motor Power selected P 2 x 3.7 kw Hence Ok
TRIPPER FOR ELECON DESIGN (GIPCL) 1 Belt width B 1400 mm 2 Tripper length L 18.07 m 3 Vertical lift of material on tripper H 5.308 m 4 Design capacity Cd 1500 tph 5 Belt speed Vb 2.65 m/s 6 Tripper speed V 15 m/min Minimum 10% of belt speed if not specified 7 Weight of material mg 157.23 kg/m 8 Weight of belt mb.35 kg/m 9 Belt tension at tripper Th1 6600 kg 10 Belt inclination at discharge pulley θ1 9.626 degrees 11 Belt inclination at bend pulley θ2 0 degrees 17 Estimated total weight of tripper W 25000 kg 18 Wheel diameter Dw 0.75 m 21 Depth of material touching skirtboard hs 5.51 inch Consider 10% of the belt width 22 Coeficient of friction for bearing m 0.015 26 Acceleration value of tripper a 0.05 m/s² Considering an acceleration time of 5 secs 27 Tripper resistance Te1 258.33 kgf Te1= (f x W) x (2 x k + m x Db))/Dw 31 Force required to lift the material and belt Te5 963.82664 kgf Te5= (Wb+Wm) x H 32 Resistance due to belt tension difference Te6 92.93 kgf Te6=Th1 x (cosθ2- cos θ1) 33 Resistance due to tripper acceleration Te7 127.42 kgf Te7= W x a/9.81 34 Skirt board resistance Te8 74.15 kgf Te8= Lb x ( Cs x hs² + 6 )/2.2 35 Total tripper resistance F 1976.65664 kgf F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 36 Motor power required Pr 6.059688012 kw Pr=F x V/60000/.8 37 Taking 20% margin, power required Pm 7.271625614 kw 38 Motor Power selected P 2 X 5.5Kw OK
TRIPPER FOR MBECL DESIGN (UKAI, CHANDRAPURA) 1 Belt width B 1200 mm 2 Tripper length L 8 m 3 Vertical lift of material on tripper H 3.05 m 4 Design capacity Cd 960 tph 5 Belt speed Vb 2.5 m/s 6 Tripper speed V 15 m/min Minimum 10% of belt speed if not specified 7 Weight of material mg 106.67 kg/m 8 Weight of belt mb.35 kg/m 9 Belt tension at tripper Th1 6600 kg 10 Belt inclination at discharge pulley θ1 12 degrees 16 Wheel axle diameter at bearing Db 0.1 m 17 Estimated total weight of tripper W 25000 kg 18 Wheel diameter Dw 0.5 m 21 Depth of material touching skirtboard hs 4.72 inch Consider 10% of the belt width 26 Acceleration value of tripper a 0.05 m/s² Considering an acceleration time of 5 secs 27 Tripper resistance Te1 312.5 kgf Te1= (f x W) x (2 x k + m x Db))/Dw 31 Force required to lift the material and belt Te5 399.611 kgf Te5= (Wb+Wm) x H 32 Resistance due to belt tension difference Te6 139.36 kgf Te6=Th1 x (cosθ2- cos θ1) 33 Resistance due to tripper acceleration Te7 127.42 kgf Te7= W x a/9.81 34 Skirt board resistance Te8 68.7 kgf Te8= Lb x ( Cs x hs² + 6 )/2.2 35 Total tripper resistance F 1507.591 kgf F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 36 Motor power required Pr 4.621708659 kw Pr=F x V/60000/.8 37 Taking 20% margin, power required Pm 5.546050391 kw 38 Motor Power selected P 2 X 3.7 Kw OK
TRIPPER FOR L T DESIGN (CSEB KORBA) 1 Belt width B 1400 mm 2 Tripper length L 11.4 m 3 Vertical lift of material on tripper H 4.55 m 4 Design capacity Cd 1000 tph 5 Belt speed Vb 2.2 m/s 6 Tripper speed V 12.5 m/min Minimum 10% of belt speed if not specified 7 Weight of material mg 126.26 kg/m 8 Weight of belt mb.35 kg/m 9 Belt tension at tripper Th1 5854 kg 10 Belt inclination at discharge pulley θ1 15 degrees 17 Estimated total weight of tripper W 21200 kg 21 Depth of material touching skirtboard hs 5.51 inch Consider 10% of the belt width 26 Acceleration value of tripper a 0.041666667 m/s² Considering an acceleration time of 5 secs 27 Tripper resistance Te1 547.67 kgf Te1= (f x W) x (2 x k + m x Db))/Dw 30 Approx pull due to CRD Te4 0 kgf Cable festoon envisaged 31 Force required to lift the material and belt Te5 685.2755 kgf Te5= (Wb+Wm) x H 32 Resistance due to belt tension difference Te6 195.16 kgf Te6=Th1 x (cosθ2- cos θ1) 33 Resistance due to tripper acceleration Te7 90.04 kgf Te7= W x a/9.81 34 Skirt board resistance Te8 74.15 kgf Te8= Lb x ( Cs x hs² + 6 )/2.2 35 Total tripper resistance F 1952.2955 kgf F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 36 Motor power required Pr 4.98750491 kw Pr=F x V/60000/.8 37 Taking 20% margin, power required Pm 5.985005892 kw 38 Motor Power selected P 2 x 5.5 kw Hence Ok
FOR TRF (AMARKHANTAK TPP) 1 Belt width B 1000 mm 2 Tripper length L 12.9 m 3 Vertical lift of material on tripper H 5.375 m 4 Design capacity Cd 500 tph 5 Belt speed Vb 2 m/s 6 Tripper speed V 10 m/min Minimum 10% of belt speed if not specified 7 Weight of material mg 69.44 kg/m 8 Weight of belt mb.35 kg/m 9 Belt tension at tripper Th1 3000 kg 10 Belt inclination at discharge pulley θ1 15 degrees 16 Wheel axle diameter at bearing Db 0.115 m 17 Estimated total weight of tripper W 16000 kg 21 Depth of material touching skirtboard hs 3.94 inch Consider 10% of the belt width 26 Acceleration value of tripper a 0.033333333 m/s² Considering an acceleration time of 5 secs 27 Tripper resistance Te1 363.33 kgf Te1= (f x W) x (2 x k + m x Db))/Dw 31 Force required to lift the material and belt Te5 504.12125 kgf Te5= (Wb+Wm) x H 32 Resistance due to belt tension difference Te6 100.01 kgf Te6=Th1 x (cosθ2- cos θ1) 33 Resistance due to tripper acceleration Te7 54.37 kgf Te7= W x a/9.81 34 Skirt board resistance Te8 64.14 kgf Te8= Lb x ( Cs x hs² + 6 )/2.2 35 Total tripper resistance F 1545.97125 kgf F=Te1+Te2+Te3+Te4+Te5+Te6+Te7+Te8 36 Motor power required Pr 3.159578742 kw Pr=F x V/60000/.8 37 Taking 20% margin, power required Pm 3.791494491 kw 38 Motor Power selected P 1.5 +.75 kw Not OK