Date:-25.08.

2012

Crane No:Capacity:- 15/5 MT

CROSS TRAVEL MOTOR POWER CALCULATION:

As per IS-3177:1999

Safe Working Load Class/ Duty Weight of Crab: Specified Speed Duty factor for Specified class of Duty: No of Pair of Gears Gear Efficiency:-E=0.985^n Overall friction factor Average Linera acceleration Torque Factor Derating factor for Ambient Temp Service factor for Trolley No of Drives

SWL

15

MT

M-6 / Indoor W_Crab V_ct Cdf_ct n N F a_ct T Der_fac S_ct n_ct 5 15 1.4 3 0.9557 30 8 1.7 0.95 1.06 1 1100 x a_ct) 981 x N) (Ref-IS-3177,Annex-C,Page-52) (Ref-IS-3177,Annex-C,Page-53) (Ref-IS-3177,Table-20A,Page-53) MT mpm (Ref-IS-3177,Table-2 Page-7)

Motor KW_CT-=

(Swl+W_crab)xV_ctxS_ct 6117 x T

X 1.204 KW

(F +

Motor KW_CT-= Considering 20% as Margin Motor Kw Required is:

Motor_Kw_req =

Motor KW_MH x 1.2 1.445 KW

Selected Motor:- 1.5 KW TEFC, Squirel cage Type, 6Pole,40% CDF,S-4 Duty,with temp rise limited to Class-B Insulation, IP-55,150 STHour,Ambient Temp-45 Deg C,Suitable derated for 50 Deg C,Volt-415+/-10%, Frequency-50 HZ+/-5% and variation

Frame Size:-

90 L (IS-325) For Steelage Industries

Authorised Signatory

Page- 1 of

(Ref-IS-3177,Table-2 Page-7)

(Ref-IS-3177,Annex-C,Page-52) (Ref-IS-3177,Annex-C,Page-53) (Ref-IS-3177,Table-20A,Page-53)

1 Date:-25.08.2012

MAIN HOIST MOTOR POWER CALCULATION:

Safe Working Load Class/ Duty Weight of attachments: Specified Speed Duty factor for Specified class of Duty: No of Pair of Gears No of Rotating sheaves Gear Efficiency:-E=0.985^nx0.99^m Service Factor for AC Motors Derating factor for Ambient Temp Motor KW_MH-=

SWL W-1 V-h Cdf n m E Cv Camb

2 M-6/ 0.1 10 1.6 3 2 0.9367 0.67 0.88

MT Indoor MT mpm

(SWL+W-1)x Vh xCv x Cdf 6.12 x E 4.46 KW

Motor KW_MH-= Considering 20% as Margin Motor Kw Required is: Motor_Kw_req =

Motor KW_MH x 1.2 5.36 KW

Selected Motor:- 5.4 KW TEFC, Slip Ring Type, 6Pole,40% CDF,S-4 Duty,with temp rise limited to Class-B Insulation, IP-55,150 STHour,Ambient Temp-45 Deg C,Suitable derated for 50 Deg C,Volt-415+/-10%, Frequency-50 HZ+/-5% and variation

2 Date:-25.08.2012

MAIN HOIST BRAKE TORQUE CALCULATION:

Main Hoist Motor RPM Main Hoist Motor Required Power Input Torque MH =

MH_Mot_rpmMotor_kw_Hoist_MH 975 x Motor_kw_hoist_MH MH_Mot_rpm

Input Torque MH = Brake Torque Service Factor

Required Braking TorqueBraking_Torque_MH - 1.5 x Input_Torque_MH Braking_Torque_MH Selected Brake: 1 No AC EHT Brake Size- MDT-150-18 with Braking Torque- 9 KgM

STEELAGE INDUSTRIES

3 Date:-25.08.2012

CROSS TRAVEL MOTOR POWER CALCULATION:

Safe Working Load Class/ Duty Weight of Crab: Specified Speed Duty factor for Specified class of Duty: No of Pair of Gears

SWL W_Crab V_ct Cdf_ct n

2 M-6 / 2 15 1.4 3

MT Indoor MT mpm

Gear Efficiency:-E=0.985^n Overall friction factor Average Linera acceleration Torque Factor Derating factor for Ambient Temp Service factor for Trolley No of Drives Motor KW_CT-=

N F a_ct T Der_fac S_ct n_ct (Swl+W_crab)xV_ctxS_ct 6117 x T

0.9557 30 8 1.7 0.95 1.06 1 X 0.241 KW (F +

Motor KW_CT-= Considering 20% as Margin Motor Kw Required is: Motor_Kw_req =

Motor KW_MH x 1.2 0.289 KW

Selected Motor:- 0.55 KW TEFC, Squirel cage Type, 6Pole,40% CDF,S-4 Duty,with temp rise limited to Class-B Insulation, IP-55,150 STHour,Ambient Temp-45 Deg C,Suitable derated for 50 Deg C,Volt-415+/-10%, Frequency-50 HZ+/-5% and variation Frame Size:90 L (IS-325)

4 Date:-25.08.2012

CROSS TRAVEL BRAKE TORQUE CALCULATION:

Cross Travel Motor RPM CT Motor Required Power Input Torque AUX =

Aux_Mot_rpmMotor_kw_ct 975 x Motor_kw_hoist_AUX AUX_Mot_rpm

Input Torque AUX = Brake Torque Service Factor

Required Braking TorqueBraking_Torque_AUX - 1.5 x Input_Torque_AUX Braking_Torque_AUX Selected Brake: 1 No AC EHT Brake Size- MDT-100-18 with Braking Torque- 6 KgM

STEELAGE INDUSTRIES

5 Date:-25.08.2012

LONG TRAVEL MOTOR POWER CALCULATION:

Safe Working Load Class/ Duty Weight of Crab: weight of Crane Specified Speed Duty factor for Specified class of Duty: No of Pair of Gears Gear Efficiency:-E=0.985^n Overall friction factor Average Linera acceleration Torque Factor Derating factor for Ambient Temp Service factor for Trolley No of Drives Motor KW_CT-=

SWL W_Crab W_Crane V_ct Cdf_ct n N F a_ct T Der_fac S_ct n_ct

2 M-6 / 2 3 20 1.4 3 0.9557 40 8 1.7 0.95 1.06 1 X

MT Indoor MT MT mpm

(Swl+W_crab+w_crane)xV_ctxS_ct

(F +

6117 x T Motor KW_CT-= Considering 20% as Margin Motor Kw Required is: Motor_Kw_req = 0.705 KW

(F +

Motor KW_MH x 1.2 0.85 KW

Selected Motor:- 0.75 KW x 2 Nos TEFC, Squirel cage Type, 6Pole,40% CDF,S-4 Duty,with temp rise limited to Class-B Insulation, IP-55,150 STHour,Ambient Temp-45 Deg C,Suitable derated for 50 Deg C,Volt-415+/-10%, Frequency-50 HZ+/-5% and variation Frame Size:90 L (IS-325)

6 Date:-25.08.2012

LONG TRAVEL BRAKE TORQUE CALCULATION:

Cross Travel Motor RPM CT Motor Required Power Input Torque AUX =

Aux_Mot_rpmMotor_kw_ct 975 x Motor_kw_hoist_AUX AUX_Mot_rpm

Input Torque AUX = Brake Torque Service Factor

Required Braking TorqueBraking_Torque_AUX - 1.5 x Input_Torque_AUX Braking_Torque_AUX Selected Brake: 1 No AC EHT Brake Size- MDT-100-18 with Braking Torque- 6 KgM

STEELAGE INDUSTRIES

7 Date:-25.08.2012

MAIN HOIST WIRE ROPE CALCULATION:

Safe Working Load No of Rope Fall Weight of Attchments Efficiency of Pulley System Max tension in 01 Fall Rope=

swl 2 No_falls 4 wt_att 0.1 np 0.96 (Swl+wt_att)/(No_fallsx np) S

MT MT

Max tension in 01 Fall Rope= Minimum practical co-efficient of utilisation Duty factor for Hoist Required Breaking Strength of Rope F0_MH= Wire Rope Dia Selected= Minimum Breaking Strength= Tensile Strength= Type of Core/Construction= Factor of Safety Achieved= WRD mbs

Zp cdf_H F0_MH= S x Zp x Cdf_H

0.55 3.5 1.6

16 mm 35 KN 180 Kg/mm^2 Fibre Core/6x36 mbs x Zp x cdf_h F0_MH

Fos= Hence,Selection of Wire Rope is O.K as FOS is greater than Six.

STEELAGE INDUSTRIES

8 Date:-25.08.2012

CROSS TRAVEL WHEEL LOAD AND DIAMETER CALCULATION

Safe Working Load Span of the Crane Crane weight Crab weight Centroid of Load Wrt to wheel Base Wheel Base No of CT Wheel MAXIMUM WHEEL LOAD CT: max_wh_load_ct= max_wh_load_ct= MINIMUM WHEEL LOAD CT: min_wh_load_ct= max_wh_load_ct= MEAN WHEEL LOAD swl span wt_crane wt_crab cent_load b no_wh_ct wt_crab no_wh_ct 2 6.5 3 2 500 1150 4 + MT Mtr MT MT

swl (no_ct_ct/2)

wt_crab no_wh_ct m_w_l m_w_l = =

swl (no_ct_ct/2)

2xmax_wh_load + min_wh_loa 3 1.02173913

D= Diameter of wheel in mm m_w_l Mean Wheek load cdf Duty Factor cbh Hardness Factor for wheel material csf safety factor for wheel material csp Co-efficient depending on speed of rotation of wheel A useful width of Rail Diameter of Wheel D = Pmean x cdf x csf 1.5 x A xcbh x Csp WHEEL HARDNESS: Brinnel Hardness of Wheel Rim BHw Brinnel Hardness of Rail/Sq Bar BHr Factor depedent on Rail Length CL Factor depedent on No of Wheel Cz Factor depedant on Wheel Dia Cd

170 BHN 1.08 1.08 1.06

BHw =

1.3 x BHr x CL Cz x Cd

Wheel Diameter Selected =

160

STEELAGE INDUSTRIES

9 Date:-25.08.2012

LONG TRAVEL WHEEL LOAD AND DIAMETER CALCULATION

Safe Working Load Span of the Crane Crane weight Crab weight Minimum Hook Approach No of LT Wheel MAXIMUM WHEEL LOAD LT: max_wh_load_Lt= max_wh_load_Lt= MAXIMUM WHEEL LOAD LT: max_wh_load_Lt= max_wh_load_Lt= MEAN WHEEL LOAD swl span wt_crane wt_crab Min_Hook no_wh_lt wt_crane-wt_crab no_wh_LT 2 6.5 3 2 0.8 4 + MT Mtr MT MT M

swl+wt_crab (no_ct_Lt/2)

wt_crane-wt_crab no_wh_LT m_w_l =

swl+wt_crab (no_ct_Lt/2)

m_w_l = D= Diameter of wheel in mm m_w_l Mean Wheel load cdf Duty Factor cbh Hardness Factor for wheel material csf safety factor for wheel material csp Co-efficient depending on speed of rotation of wheel A useful width of Rail Diameter of Wheel D = Pmean x cdf x csf 1.5 x A xcbh x Csp WHEEL HARDNESS: Brinnel Hardness of Wheel Rim BHw Brinnel Hardness of Rail/Sq Bar BHr 170 Factor depedent on Rail Length CL 1.17 Factor depedent on No of Wheel Cz 1.09

2xmax_wh_load + min_wh_loa 3 1.50

BHN

Factor depedant on Wheel Dia BHw =

Cd 1.3 x BHr x CL Cz x Cd

1.09

Wheel Diameter Selected =

200

STEELAGE INDUSTRIES

Crane No:Capacity:- 2 MT

As per IS-3177:1999

(Ref-IS-3177,Table-2 Page-7)

(Ref-IS-3177,Annex-C,Page-52) (Ref-IS-3177,Annex-C,Page-53) (Ref-IS-3177,Table-20A,Page-53) X 1 Camb

ass-B Insulation, Volt-415+/-10%,

For Steelage Industries

Authorised Signatory

Page- 1 of Crane No:Capacity:- 2 MT

As per IS-3177:1999

970 4.462733

4.485737 KgM 1.5

6.73 KgM

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 2 MT

As per IS-3177:1999

(Ref-IS-3177,Table-2 Page-7)

(Ref-IS-3177,Annex-C,Page-52) (Ref-IS-3177,Annex-C,Page-53) (Ref-IS-3177,Table-20A,Page-53)

1100 x a_ct) 981 x N)

o Class-B Insulation, Volt-415+/-10%,

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 15/5 MT

As per IS-3177:1999 900 0.29

0.313 KgM 1.4

0.44 KgM

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 2 MT

As per IS-3177:1999

(Ref-IS-3177,Table-2 Page-7) (Ref-IS-3177,Annex-C,Page-52) (Ref-IS-3177,Table-20A,Page-53)

1100 x a_ct)

981 x N)

o Class-B Insulation, Volt-415+/-10%,

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 15/5 MT

As per IS-3177:1999 920 2.20

2.33 KgM 1.4

3.26 KgM

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 2 MT

As per IS-3177:1999

Ton

Ton 3.063 KN 30.0125 (Ref:-IS-2266)

6.531

For Steelage Industries

Authorised Signatory

Page- 1 of

Crane No:Capacity:- 2 MT As per IS-3177:1999

x 1.065 x

b-cent_load b T

cent_load b T 0.935 max_wh_load + min_wh_load 3 10013.04 N T 10013.0435 N 1.4 4.05 1 (Output RPM-17.45) 1.080 50 42.732

17.45455 14.80547

(IS-3177,Page-13,Table-6) (IS-3177,Page-13,Table-7) (IS-3177,Page-13,Table-8)

208

mm
For Steelage Industries

Authorised Signatory Page- 1 of

Crane No:Capacity:- 2 MT As per IS-3177:1999

x 2.004 x

span-min_hook span T

min_hook span T 0.496 max_wh_load + min_wh_load 3 14712.56 N T 14712.5641 N 1.4 4.05 1 (Output RPM-18.45) 1.070 49 64.668

18.46154 20.29952

(IS-3177,Page-13,Table-6) (IS-3177,Page-13,Table-7)

250 5.3

280

(IS-3177,Page-13,Table-8) 218

mm
For Steelage Industries

Authorised Signatory Page- 1 of