Hoist Design Procedure for EOT Crane… _ Tech Expert

10/9/2016

Hoist D esig n Pr ocedur e for EOT cr ane… | Tech Exper t

Tech Expert

Hoist Design Design Procedure Procedure for EOT EOT crane… crane… Posted on on July 29, 2008 by b y rajend raj endra ra Parmanik THE DESIGN

We are concerned with the design of the hoisting arrangement of 2 tonne capacity of EOT crane ,which will li the load up to a distance of 8 meters. 1.DESIGN OF HOOK

LINK HOO K

hook-cross-section

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SHEAVE

Selection of section : The section is trapezoidal Selection of material : Mild steel Load to li : 2 tonne Considering Considering 50 % over loading. So the design load = 2 tonne+50% of 2 tonne = 3tonne Taking the help of (IS 3815-1969) for selection of material for 8 dimensions of crane hook.In IS 3815-1969 the nearest selection for 3.3 tonne is 3.2 tonne. For load 3.2, proof load (P) is 6.4 tonne. So C = 26.73√P = 26.73 x √6.4 = 67.62 ≈ 68 mm A = 2.75 C = 2.75 x 68 ≈ 187 mm B = 1.31 C = 1.31 x 68 ≈ 89mm D = 1.44 x C = 1.44 x 68 ≈ 98mm E = 1.25C = 1.25 x 68 ≈ 85mm F = C = 68mm G = 35mm G1 = M33, Pitch = 6mm (Coarse series) H = 0.93 x C = 0.93 x 68 ≈ 63mm J = 0.75 x C = 0.75 x 68 ≈ 51mm 51mm K = 0.92 x C = 63mm L = 0.7 x C = 0.7 x 68 ≈ 48mm

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SHEAVE

Selection of section : The section is trapezoidal Selection of material : Mild steel Load to li : 2 tonne Considering Considering 50 % over loading. So the design load = 2 tonne+50% of 2 tonne = 3tonne Taking the help of (IS 3815-1969) for selection of material for 8 dimensions of crane hook.In IS 3815-1969 the nearest selection for 3.3 tonne is 3.2 tonne. For load 3.2, proof load (P) is 6.4 tonne. So C = 26.73√P = 26.73 x √6.4 = 67.62 ≈ 68 mm A = 2.75 C = 2.75 x 68 ≈ 187 mm B = 1.31 C = 1.31 x 68 ≈ 89mm D = 1.44 x C = 1.44 x 68 ≈ 98mm E = 1.25C = 1.25 x 68 ≈ 85mm F = C = 68mm G = 35mm G1 = M33, Pitch = 6mm (Coarse series) H = 0.93 x C = 0.93 x 68 ≈ 63mm J = 0.75 x C = 0.75 x 68 ≈ 51mm 51mm K = 0.92 x C = 63mm L = 0.7 x C = 0.7 x 68 ≈ 48mm

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M = 0.6 x C = 0.6 x 68 ≈ 41mm N = 1.2 x C = 82mm P = 0.5 x C = 34mm ≈ 34mm R = 0.5 x C = 0.5 x 68 ≈ U = 0.33 x C = 0.3 x 68≈20 mm Checking for strength Area of the section = ½ x 63 x (41+8) = 1543.5 mm2 Centroid from ‘a’ = (.05 x 8 x 65) 63/3+(.5 x 41 x 63) x (2 x 63)/3 ½ x 68 x (41+8) = 38.571mm = 38.6 mm= h2 So centroid from b = 63-38.6=24.4mm =h1 0 = 34 +24.4 = 58.4mm r0 = A/(dA/u) dA/u = [b2+r2/h (b1-b2)] ln r2/r1 – (b1-b2) =28.65mm r0 = A/(dA/u) A/(dA/u) = 1543.5 1543. 5 = 53.87 5 3.87  53.9 mm. 28.65 e= 0-r0 = 58.4 – 53.9 = 4.5mm Moment M = -P x 0 = -3 x 58.4 = – 175.2 (tonne x mm) Stress due to bending is given by  b = M X 4 Ae r0-y For point a Y = -(e+h2) = -(4.5+38.6) = – 43.1 mm For point b Y = r0-r1 = 53.9 – 3.4 = 19.9 mm

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Stress due to direct loading = P/A = 3/1543.5 = 1.9436 x 10-3 Tonne/mm3 Stress due to curvature of ‘a’  ba = – (-175.2) x -43.1 1543.5 x 4.5 {53.99 – (-43.1)} = 0.0112 So total tress at a = – 0.0112 + 1.9436 x 10-3 = – 9.2642 x 10-3 Tonne/mm2 = – 9.2642 kg/mm2  -90.85 Mp Stress due to curvature at b  bb = -(-175.2) x . 19.99 . 1543.5x 4.5 (53.9 – 19.9) = 0.014763 So total stress at b = bb + 1.9436 x10-3 =0.014763 + 1.9436 x 10-3 =0.0167 tonne/mm2 tonne/mm2 = 16.7 Kg/mm2  163.84 MPa Let the material be class 4 carbon steel ( 55C 8) Ultimate tensil strength I 710MPa Design strength = Ultimate tensil strength Factor of safety  = 710/4  = 177.5 MPa 163.84 > 177.5 So design is safe Determination of length of threaded portion Pitch = 6mm Nominal dia of thread = 33 mm (G1) = d Considering the screw and thread are of single safest & square mean diameter of screw = dm = d- (p/2) = 33 – (6/2)

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Hoist Design Procedure for EOT crane… | Tech Expert

= 30 tan  = 1/dm = 6/( x 30) tan  = tan-1 { 6/( x 30)} = 3.640 Let the co-efficient of fraction be 0.15 So  = tan  = 0.15 = 8.530 Torque required to resist the load

T = W x dm* tan (  + ) 2 Where w is the weight of load is 3 tonne and the load of the hook itself. The maximum weight of the hook is 50kg (from the use of the so ware ‘Pro-Engineer’) So T = 3050x 30 x tan (3.61+ 8.53) 2 =9866.42 Kgmm Stress induced in the screw

Direct tensible stress (allowable or design)  =4w/ d02 d0 = core diameter of the screw. dc = d-p = 33-6 = 27 mm 1 = 4x 3050  272 = 5.326 kg/mm2  52.24MR Torssional shear stress  = 16T = 16×9866.42  de3  x 273

= 2.5529 Kg/mm2 = 25MP Maximum shear stress in the screw max = ½  (2 + 4 2) = ½ √ (52.242 + 4 x 252) = max = 36.15Mpa

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Height of the nut

a)Considering bearing action between the thread in engagement. Let ‘n’ is no of thread in engagement with screw. Considering bearing action between nut & screw. Let the permissible bearing pressure =pi= 6 MR. We know Pi = 4W  (d2-dc2) x n So 6 = 4×3050 x 9.8 (332-272) x n N = 4 x 3050 x 9.8 (332-272) x 6  1.27 x 9.8  12.5 So the height of the nut is = 2 x 12.5 = 25mm. b) Considering shear failure of thr ead across root

Shear stress induced  = . W . dc(0.5xP) xn = . 3050 x 9.8 .  x 27 x (0.5 x 6) x n = 117.46 n = 0.5 x 177.5 = 117.46 nn = 117.46 177.5 x0.5 = 1.32 = 2 So height is n x p = 2 x 6 =12mm Tacking the highest value 25mm

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Design of pin which will carry the dead load & the load of hook.

We have to determine the dimension of ‘t’. n = M x Y I = M x (24) I2 Where “I” is moment of inertial about bh3 t x 243 x 2 12 12 Maximum bending moment for = M = ¼ x W x L Let L = 70 mm So M = ¼ x 3050 x 70 = 2 x 26687.5 Kgmm. = 2 x 261.715 x 103 N-mm  = 2x 261.715 x 103 x 24 1 t x 243 2 177.5 = 1363 x 2 t t = 1363 x 2 = 7.8 x 2  15.2 MM 177.5  16 mm Taking 20 m for additional safety Diameter of the projected portion

The projected position is undergo only shearing failure. Design shear stress  = 0.5 x design tensive stress. Force action on each side i.e. projected portion is 3050/2 =1525 kg  14.95 x 103  15 KN So the minimum value of the height of the projected portion is 15mm, taking n= 40mm for screwing arrangement.  = 15 x 103 /4 x dk2 = 177.5 x 0.5 = 15 x 103 (/4) dk2 = dk2 = 15 x 103 x 4 177.5 x 0.5 x  = dk2 = 15 x 103 x 4

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177.5 x 0.5 x  = 215.19 = 14.66  15mm Taking 20 mm for additional safety purpose. So that it can be turned to thread in size ‘m20’. Height of the projected portion P * x * dk = w/2 Where p = bearing pressure or crushing stress. Let p = 210 MPx Allow crushing stress =210/4 = 210/4 x x x 20 = 3050 x 9.8 2 x = 3050 x 9.8 x 5 2 x 20 x 210 = 3.56 mm x 4 = 14.024 =15 mm So the minimum value of the height of the projected portion is 15 mm, taking x = 40 mm for screwing arrangement. Design of link and the cover plate

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(hps://rparmanik.files.wordpress.com/2008/07/coverplate.png) coverplate Thickness of link and cover plate should not be minimum. Let the material be (55C8). a)Hole fopr placing the pin which will carry the hook will be ‘dk’ i.e. 20 mm. zchecking for the failure of link & cover plate combindely(as they are of same material and undergone same condition of failure). Mode of failure

Tearing of cover plate & link at the edge. Crushing of cover plate and link. Breaking at the lowest cross section. i).Considering tearing of cover plate & link at the edge Experiments from the riveted joints have shown that if the distance between the centre of rivet and the edge is 1.5 times the diameter of the rivet.The element will not undergo the failure of tearing at the edge. The same condition is also applicable in our case. But for more safety reasons taking the distance between the centre of the projected element and the edge of the cover plate & linkis 2 times the dia of the projected element. So Z = 2 x dk

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= 2 x 20 = 40 mm Considering tensile failure at the lower cross section So σd = w/2 A 177.5 = 3050 x 9.8/2 2 x x x 30 x = 3050 x 9.8/2 2 x 30 x 177.5 = 28/2 mm ≈ 1.4 mm Considering crushing failure Force = σcrushing(d) x projected area 3050 x 9.8 = σcrushing(d) x (20 x x) FOS = 3050 x 9.8 x 4 = 14.24 mm ≈ 15 mm 2 x 210 x 20 So taking maximum of x i.e 15 mm, So x = 15 mm

(hps://rparmanik.files.wordpress.com/2008/07/cover-plate-auto-cad.png) cover-plate-auto-cad AutoCAD drawing Of Cover plate

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(hps://rparmanik.files.wordpress.com/2008/07/auto_link.png) auto_link Auto CAD AutoCAD Drawing Of Link Design of sha carrying the pulley

(hps://rparmanik.files.wordpress.com/2008/07/shatocarrypully.png) sha to carry pully

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(hps://rparmanik.files.wordpress.com/2008/07/pully1.png) Pulley The weight of each cover plate is 2.5 kg. Weights of each link weigh 2 kg. So weight of 2 covers plate & 2 link Is 2 x 2.5 + 2 x 2 = 9 kg. So the total weight which the shas carry is 3050 + 9 = 3059 ≈ 3060 Each Side subjected to a load of 3060/2 = 1530 kg. The sha is only subjected to Crushing failure (at the cover plate and link).

Shear failure. Crushing failure (at the pulley)

Considering shear failure  = f/a  = allowable shear stress = 0.5 x 177.5 = 0 .5 x 177.5 = 22.2 MR FOS 4 Stress induced = 1530 x 9.8 = 150042

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π/4 x 302 π/4 x 302 = 21.22 MPa As induced stress is less than that allowable stress, the design is safe Considering crushing failure at the cover plate

Crushing stress = Force/Protected area Allowable stress = 240/4 = 60MPa Induced Crushing stress = Force Projected area = 3060 x 9.8 70 x 40 As allowable induced stress 60.86 KN. The selection is feasible. Design of Sheave

(hps://rparmanik.files.wordpress.com/2008/07/sheave1.png) sheave

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a = 40mm b = 30mm c = 7mm d = 18mm e = 1mm l = 10mm r = 12mm r4 = 8mm h = 25mm r1 = 4mm r2 = 3mm r3 = 12mm Material is caste iron Let dia of the sheave = 20 x d = 20 x 14 = 240mm The reference is made from Rudenko,N.’Materials Handling Equipment ‘,Mir Publishers, Moscow(1969). P .86,Table 16. Drum design Drum grove size

Referring to Redenko,N “Materials Handing Equipment”,Mir publishers,Moscow (1969),P.No.90 table 17. Considering standard groove of drum, for, diameter of wire 15 mm as it is nearest to 14mm. Drum diameter = sheeve diameter = 240 mm. r 1 = 0.53 x d (d ≈15) = 9mm s1 = 1.15d = 17mm C1 = 0.25 d = 5mm No. of turn on each side of drum Z = (hi/πd) + 2 = Where H = Liing Height. I = Ratio of the pulley system. D = Drum diameter ≈ 45 x 14 = 630 So Z = ( 8.00 x 2) + 2

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Π x63 Z = 10 Full lenth of drum for one rope. L = (2HI + 7)Si (I = 2 assumed) πD =(2 x 800 x 2 + 7)1.5 =34.75 ≈35 cm The drum is made up of IS grade = SG 80/2 With stress = 480Mpa W = 0.02 x 630 = 10 = 22.6 ≈ 23 mm Outside dia of the drum Do = D + 6d = 630 + 6 x 14 = 714mm Inside dia of the drum = Di = D – 2W = 630 – 2 x 25 = 584 mm Checking of strength Bending Stress in drum

σbend = 8WLD π(D4 – Di4) = 8 x 6200 x 9.8 x 35 x 630 Π x (6304 – 5844) = 0.0828MP Maximun Torque Tmax = W (D + d) 2 = 6200 x 9.8 (630 + 14) 2 = 19.564 x 106 Maximum Shear Stress  = 16 Tmax D π(D4 – Di4)


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= 16 x 19.56 x 106 x 630 π x (6304 – 5844) ≈ 1.523 MPx Direct Compressive Stress = W = σc wSi = 6200 x 9.8 23 x 17 = 155.4MPx Maximum Stress in the Drum σ = √σbend2 + σc2 + 4max2 = (0.08282 +155.42 = 4 x 1.5232)1/2 σ < 480 MPx, S the Design is safe. Fastening Of Rope With The Drum For 14 mm dia Locating Dimension Pitch of screw = 53 mm T = 43 mm Screw size Lo = 18 mm L = 50 mm Plate C = 7 mm No. of fastenings = 1 Selection of Motor

W = 3100 kg x 9.8 m/s2 V = 0.2m/sec So power required = 3100 x 9.8 x 0.2 = 6080.123Nm/sec = 6.08 Kwa


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Taking 11 Kwa 3 phase induction motor (flange type) of 11 KW (nearest to 6.08KW) Frame No. 132 M Flange designation F265B The speed is 1000 RPM By using gear box the speed can be reduced to 300 RPM GearBox Calculation

Gearbox ratio = (Input RPM x π x rope drum dia) (speed x no. of falls /2) = ( 980 x π x .714) = 183.54 (3.00 x 4 ) Brake calculation

Required Brake Torque = 1.5 x 716.2 x mech H.P. Motor RPM = 1.5 x 716.2 x 50.12 300 = 53.84 Nm Design of worm set

Power = P = 6.08 Kwa RPM of Worm = Nw = V x 60 πd = 0.2 x 60 π x 0.63 RPM of Worm Gear NG = 300 RPM So R = NG Nw = 300 6 Let Ф = 14.5o Let the centre distance = C = 300 mm =0.3m Pitch circle diameter of the worm Dw = C.8750 = 3Pc

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3.48 Dw = 3.8750 = 0.10020m 3.48 ≈ 100mm Dw = 3Pc = 3Pa = 3 x π x ma So ma = Dw/3π = 100.2/3π = 10.63 mm ≈ 11mm Pitch circle dia of the gear Dg = 2C – Dw = 2x 300 – 100 = 500 mm Velocity ratio = Ng/Nw = 50 Ng/Nw = Dg /(ma x Nw) 50 = Dg/(11 x Nw) Dg = 50 x 11 x Nw

(hps://rparmanik.files.wordpress.com/2008/07/suno-na.png) Taking Ng = 1 , because Dw is closer to the calculated. So, Dg = 550 Dw = 2C – Dg = 2 x 300 -500 = 50mm Face width of the gear b = 0.73 x Dw = 0.73 x 50 = 36.5 = 40 mm Static strength of Bronze σd = 90MPa In worm drive irrespective of materials of worm and worm ger,the gear is weak. So design should be based on gear.

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Tangential load on the gear :

Ft = σ π mn y b = (σd x Cv)π mn y b Velocity factor Cv = 6 . 6 + Vg Vg = π x Dg x Ng 60 = 8.69 Cv = 6 = 0.41 6 + 8.69 Form factor Y = 0.124 – 0.684 Ng = 0.11132 Tan λ = m x Nw Dw = 11 x 1 50 λ = tan-1 (.22) = 12.4o Nominal Module = m (ma) x cos λ = 11 x cos 12.4 = 10.743 mm Ft = 90 x .41 x π x 1o.743 x .11132 x 40 = 5545.47 N = 5.55 KN Power Capacity = P1 = Ft x Vg = 5.55 x 103 x 8.69 = 48.19 K wa Which is greater than capacity so the design is safe. Powe capacity of drive from wear point of view


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P2 = Dg x b x W x Vg = 550 x 40 x W x 8.64 W = .550 = Material combination factor. For worm and worm gear made up of hardened steel and phosphor bronze So, P2 = (550 / 1000) x 40 x .55 x 8.64 = 104.4 Kwa Power capacityof the drive, from the heat dissipation point of view is given by : P3 = 3650 x C17 R+5 = 3650 x 300 17 50 + 5 = 361.99K wa So The safe power capacity is minimum i.e P1 = 48.19 Kw CONCLUSION : The design of the hoist of EOT crane is done Numerically .We can implement the design practically in industries for various liing jobs. (For More Information Regarding This Topic Please Give Your Email id ) Filed under: Engineering Tagged: | BLOCK DIAGRAM , Crane, Design, EOT , EOT PARTS, Hoist, Hook, Pro-E, Stress Analysis « A.P.J ABDUL KALAM ON Mission 2020 My Poll »

78 Responses

premiere first , on August 13, 2008 at 6:20 am said:

Very Nice Site! Thanx! hp://excellent-credit-card.blogspot.com Reply Tohid Sedaghat , on October 18, 2008 at 11:50 pm said:

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Dear sir. I need to a reference for designing and producing hoists in E.O.T.. Specially I need to the restricting data of the design criteria. I mean some useful coefficients and also factor of safeties which should be mentioned. I really appreciate it if you help me or inform me about a useful references. Best regards Reply Brĳesh , on August 20, 2010 at 6:24 pm said:

Gearbox Reference Hand Book Hoist, 2 stage, 3 stage and 4 Stage gearboxes more suitable for heavy duty applications like material handling and Industrial purposes also. Modular type gear component designs with closer ratio distributions A printed handbook for every gearbox and 1:1 AutoCAD drawings Assembly drawings, part drawings with tolerances and manufacturing details Reply Gian chnd thakur , on January 13, 2009 at 1:09 pm said:

Design of Gear Box, Hoist ,Pully Etc Reply RATHINDRAROY , on January 15, 2009 at 11:25 am said:

DEAR SIR, I WANT TWO SAMPLE DESIGN CALCULATIONS FOR COMPLETE EOT CRANES . CAN YOU GIVE ME THAT . KIND REGARDS RKROY

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Reply RATHINDRAROY , on January 15, 2009 at 11:26 am said:

Can you give me design calculation for EOT Cranes . I want to learn EOT crane design. Kind Regards R K ROY Reply RAJU , on January 22, 2009 at 6:48 pm said:

Please give the EOTcrane design of double girder Reply R K ROY , on February 18, 2009 at 1:30 pm said:

PL GIVE ME A SAMPLE DESIGN CALCULATION FOR FOLLOWING EOT CRANES VARIANTS 20TON SWL X 20 M SPAN X 8 MTRS LIFT 20TON SWL X 30 M SPAN X 10 MTRS LIFT 50TON SWL X 20 M SPAN X 10 MTRS LIFT 50TONS / 10 TONS SWL X 20 M SPAN X 10 M LIFT Reply Rajendra silswal , on March 11, 2010 at 3:38 pm said:

20TON SWL X 20 M SPAN X 8 MTRS LIFT 20TON SWL X 30 M SPAN X 10 MTRS LIFT 50TON SWL X 20 M SPAN X 10 MTRS LIFT 50TONS / 10 TONS SWL X 20 M SPAN X 10 M LIFT pl give me a design calculation for above E.O.T. Cranes.

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Reply Sudhir Singh Patyal , on February 24, 2009 at 11:11 am said:

Sir i need how to design a worm sha of EOT crane is this any procedure if yes then pls send me some information about it Reply sanjay patel , on February 27, 2009 at 4:29 pm said:

th eliterature is superb. but, it is not clearly readable as symbols used in this artical gets discarded. can u please send me it in *.doc format?? can u send me the design if the loading capacity is higher, for multiple bend of rope??? Reply NIKHEL , on March 12, 2009 at 7:41 pm said:

that’s fantastic can get the IS 3815-1969 data reagarding design of hoisting equipments. Reply ANGAD SINGH , on March 17, 2009 at 12:13 am said:

soware for eot crane calculation Reply Brĳesh , on August 20, 2010 at 6:31 pm said:

4 STAGES GEARBOX REFERENCE BOOK 3 STAGES GEARBOX REFERENCE BOOK

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2 STAGES GEARBOX DESIGNS HOIST GEARBOX DESIGNS Hoist, 2 stage, 3 stage and 4 Stage gearboxes more suitable for heavy duty applications like material handling and Industrial purposes also. Modular type gear component designs with closer ratio distributions A printed handbook for every gearbox and 1:1 AutoCAD drawings Assembly drawings, part drawings with tolerances and manufacturing details hp://www.doublegear.co.in/offering.asp Contact : Brĳesh Kumar ( APPLICATION ENGR) Cell: 08802 633 630 ( Delhi & NCR and NORTH INDIA) For DEMO. Reply hardik gajjar , on April 4, 2009 at 3:07 pm said:

kindly guide me for the failure of pinion of the gearbox used in E.o.t cranes. Reply Mr Kepaaa , on April 16, 2009 at 9:34 am said:

dear sir, can you give me, any components system in electric wire rope hoist and complete design with their pitcure… thanx… kind regards Reply

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Rakesh Devraj , on July 19, 2009 at 8:51 am said:

This is the first time I visited this site. I really need design of trolley design on design of 10 Ton double girder eot crane Reply sanjay patel , on July 29, 2009 at 8:54 am said:

Dear Sir, can u please give me the Design procedure for following capacities? 5 TON EOT, 12 m span 10 TON EOT, 12 m span 15 TON EOT, 12 m span 20 TON EOT, 12 m span Reply KAVADE DEEPAKK V. , on August 7, 2009 at 4:55 pm said:

Sir, M Design Er. in crane industry. I shall need your help. A Request to provide me your mail i d & contact details. Regards, Deepakk Reply Rajendran , on October 29, 2009 at 7:41 pm said:

sir, pls can u give me the sample calculation of hoist manufacturing …. Reply jayesh shah , on December 4, 2009 at 6:40 pm said:

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need to design a crab for EOT span 15mts, double girder. capacity 25 m.t. Reply shrirang puranik , on December 25, 2009 at 1:41 pm said:

Sir, can you please e-mail me the design procedure and manufacturing considerations of 5 ton E.O.T hoist crane Reply Antonio (Spain) , on January 13, 2010 at 3:03 am said:

Dear Sir, I need assitance for the selection of bearings for a sheave block for a deck crane (36 tons SWL), could you contact me by email ??? thanks, Antonio Gonzalo Spain Reply haragopal , on February 10, 2010 at 8:20 am said:

I am interested in mechanical engg topics like the hoist design. Kindly send me further details. thank you Reply Sudheer , on February 11, 2010 at 10:40 pm said:

Good Useful Information. Reply Melroy Kamath , on March 4, 2010 at 11:42 pm said:

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thank you sir for the design. really appreciated it. However if you don’t mind i need some information as to where i can get a 2d drawing of an EOT CRANE and also travelling mechanism design. Reply Rahul Sridhar , on March 14, 2010 at 12:56 pm said:

The calculations are superb .. but it is not clearly readable as some of the symbols are not supported . can you send me the .doc copy of the calculations ? Reply Rahul , on May 13, 2010 at 5:34 pm said:

really good article, can you provide me wire rope selection procedure? in EOT cranes ….. Reply D.S. Mehra , on May 13, 2010 at 6:28 pm said:

Dear sir, I want completed Eot crane design having 30T main and 5T auxiliary crane with 25 meter span Reply D.D.Sharma , on May 19, 2010 at 3:22 pm said:

Design calculation of hook are appreciable, i am in the business of crane design you are requested to send me the design calculation for crane design please take the data as under Load 5T, Span 20 mts , li 10 mts ,class II, indoor application Speed MH 5MPM, CT 10MPM, LT 20 MPM Regards DDSharma

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Reply sanjay , on May 20, 2010 at 4:10 pm said:

Dear sirm can you please send me the design procedure of EOT cranes of 5 ton, 10, ton, 12 ton with 50 meter span, It is very urgent regards sanjay Reply ahm.prime , on June 1, 2010 at 1:04 pm said:

the website thanks much Reply ahm.prime , on June 1, 2010 at 1:07 pm said:

Sir, can you please e-mail me the design procedure and manufacturing considerations of 10 ton E.O.T hoist crane double girder (full design calculation) Reply saikanth , on February 18, 2011 at 8:39 pm said:

sir, kindly send the double girder crane hoist(3.0ton) cap. G.A.Drawing Reply RAJU , on June 6, 2010 at 5:34 pm said:

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can you give me the detail calculation of eot crane design for industrial cranes Thanks T.Raju Reply RAJA , on June 7, 2010 at 3:02 pm said:

Dear sir, Can you mail me the 5 Ton SGEOT Crane,25 m Span design calculation,Hoist selection procedure with details consideration Thanks & Regards Raja Reply karthik , on August 16, 2010 at 2:27 pm said:

PL GIVE ME A SAMPLE DESIGN CALCULATION FOR FOLLOWING EOT CRANES 20TON SWL X 20 M SPAN X 8 MTRS LIFT 20TON SWL X 30 M SPAN X 10 MTRS LIFT Reply kirankumar u s , on August 17, 2010 at 5:04 pm said:

DEAR SIR, I WANT TWO SAMPLE DESIGN CALCULATIONS FOR COMPLETE EOT CRANES . CAN YOU GIVE ME THAT . KIND REGARDS KIRAN Reply rakesh panchal , on August 24, 2010 at 11:49 pm said:

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i want electric wire rope hoist with electric trolley design calculation with genaral arrangement drawing soware Reply rakesh panchal , on August 25, 2010 at 12:01 am said:

dearsir, i want to sample design calculation e o t crane so ware complet e Reply RAKESH , on August 28, 2010 at 10:01 pm said:

Dear sir , , soware for eot crane calculation with drawing as is 3177 , Reply RAKESH , on August 29, 2010 at 2:12 pm said:

i want design caculation with drawing….. as per IS 3177 girder, trolly, endcarriage. 1. CT Wheel a. Design of Wheel Diameter b. Motor Selection c. Input & Output Coupling Selection d. Brake Selection e. Design of Sha Diameter f. Bearing Selection g. Wheel Adhesion Calculation h. Wheel Tearing Calculation 2. LT Wheel a. Design of Wheel Diameter b. Motor Selection c. Input & Output Coupling Selection d. Brake Selection

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e. Design of Sha Diameter f. Bearing Selection g. Wheel Adhesion Calculation h. Wheel Tearing Calculation 3. Rope Drum a. Wire Rope selection b. Rope Drum calculations i. Diameter of Rope Drum ii. No. of Grooves required iii. Length of Rope Drum iv. Rope Drum Pipe c. Motor Selection d. Gear Box Selection e. Coupling Selection f. Brake Selection g. Design of Sha Diameter h. Bearing Selection 4. Boom Block and Top Block (4 Fall / 6 Fall / 8 Fall) a. Design of Top Block Sha Diameter b. Design of Top Block Sheave / Pulley Bearing c. Design of Top Block Pulley Diameter d. Design of Boom Block Sha e. Design of Sheave/Pulley Bearing of Boom Block Sha f. Design of Boom Block Pulley g. Design of Equalizing Pulley and Sha h. Design of Hook & Hook Nut i. Design of Thrust Bearing i want design caculation with drawing….. Reply bhavin patel , on September 6, 2010 at 6:44 pm said:

dear sir

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plaease give me the camplete e.o.t. overhead crane design procedure i m very greatfull toy ou also give me your canctact no and addrees regards bhavin patel vapi Reply Firoz Pawaskar , on September 8, 2010 at 2:51 am said:

Can you give me design calculation for EOT Cranesand specially gantry cranes. Sir please can you give us some design procedure above mentioned ffied. Regards, Firoz Pawaskar Reckon Engineers India Reply AMIT AGARWAL , on September 10, 2010 at 10:36 am said:

We require 40 MT (Main Hoist)+ 10 MT (Auxillary Hoist)EOT Crane. Please advise weight of Pillars and other Structural material and please design the load bearing pillars.Please advise mfg. and fabricators and any second sale dealers of used cranes too. Reply AMIT AGARWAL , on September 10, 2010 at 10:37 am said:

Our span is 60 . and grade II Reply

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hemant , on September 16, 2010 at 9:18 am said:

nice design. it is very helpfull to make a design. Reply hemant , on September 16, 2010 at 9:21 am said:

Sir, your design is very nice and very help to make a design. Regards, Er. Hemant kumar Ph: +919887076580 Reply Moin , on September 19, 2010 at 2:01 pm said:

PL GIVE ME A SAMPLE DESIGN CALCULATION FOR FOLLOWING EOT CRANES VARIANTS 6.3TON (2X3.2) SWL X 25 M SPAN X 8 MTRS LIFT Many Thanks & Kind Regards, Reply WILSON OCHIENG , on September 21, 2010 at 2:47 pm said:

i need to modify an existing trolley hoisting arrangement used for cane offloading so that the hoist drums are independently driven.the safe working load should be 15t.it has a travel span of 32m and a liing height of 18m.trolley wheel base is 4m wide and pitch of 3.3m.i would appreciate assistance in determining the necessary specs for the motor,gearboxes and brakes for the hoists and the cross travel . Reply

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Shankara Rao , on September 27, 2010 at 8:47 pm said:

Hello, Can you provide me the EOT crane Hoisting motor and other travel motor KW calculation examples with Formulas? kind Regards, S.Rao Reply RM.V.Arasu , on September 29, 2010 at 11:52 am said:

I need assistance for details regarding physical parameters to be measured and monitored in a Security System for static EOT cranes used in building construction Reply Avinash , on October 10, 2010 at 2:03 pm said:

Dear Mr. Rajendra, Thank you for the calculation kindly provide a design of typical EOT crane. Regards, Avinash Reply dipesh , on November 22, 2010 at 4:07 pm said:

your design of hoist is excellent . ropesheave of hoist detail is good. Reply k.s.reddy , on November 27, 2010 at 8:39 pm said:

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dear sir i want design for eot, hot ,gantry&zib crane sample design s . please can u give me the sample calculation of hoist manufacturing. thnx 2 u Reply saikanth , on February 18, 2011 at 8:45 pm said:

SIR, plz send me G.A drawing of 3 ton double girder E.O.T crane Reply saikanth , on February 18, 2011 at 8:47 pm said:

sir, plz send me G.A drawing of 3 ton double girder E.O.T hoist Reply NIKHIL ARORA , on March 11, 2011 at 3:55 pm said:

Dear Sir, I want 30 MT EOT class III hoist Gear Box, I want to know the hoist gear box ratio. i am having data as follows: Hoisting Speed – 3 Mtr / Min Electric Motor – 30 HP Electric Motor rpm – 1440 Rope drum diameter – 450 mm No. of falls – 8 Please let me know. Thanks Nikhil Arora 9737047207 Reply

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Victor Ntshekane , on March 15, 2011 at 1:29 pm said:

Dear Sir Can you please send me a portal crane design procedure, of capacity of 10 ton, respectively. Reply AMOL SARODE , on March 22, 2011 at 8:42 pm said:

dear sir, will you provide me so copy for design calculation for monorail hoist or excel sheet for the same. Reply Ashvin palande , on March 23, 2011 at 9:50 am said:

I want to design 7.5 ton Single girder box type EOT crane.pl.guide me for calculation or design. Reply phani kumar varma , on May 3, 2011 at 4:02 pm said:

can you please send me the selection procedure of eot and specifications of all types eot designing structure Reply Anonymous , on July 2, 2011 at 4:06 am said:

Dear sir, i will be greatful if you could send me full dimension and construction detail for 5 Tons and 10 tons E.O.T CRANES, Span 24 meters, li 8 meters Reply Anonymous , on July 22, 2011 at 9:49 pm said:

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dear sir, ur explanation is superb,i have just completed my engineering & joined as design engineer,the problem is that the firm is newly started,so MY kind request to U IS TO send the design procedure of crane assembly (EOT,HOT,JIB.GOLIATH). I just beg of u and also ready to pay.ANYBODY FRM ABOVE PLZ HELP. CONTACT:09665621417. MAIL harish7878@rediff.com Reply Anonymous , on July 22, 2011 at 9:50 pm said:

dear sir, your explanation is superb,i have just completed my engineering & joined as design engineer,the problem is that the firm is newly started,so MY kind request to U IS TO send the design procedure of crane assembly (EOT,HOT,JIB.GOLIATH). I just beg of u and also ready to pay.ANYBODY FRM ABOVE PLZ HELP. CONTACT:09665621417. MAIL harish7878@rediff.com Reply Partheeban , on October 11, 2011 at 9:57 pm said:

Dear Mr. Parmanik, Could you please suggest a reference book for these calculations? Thank you. Reply manoj , on November 10, 2011 at 5:40 am said:

dear sir can u give me various housing drawing of gear box use in crane company please Reply

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Ashwini , on December 1, 2011 at 4:51 pm said:

There is beam of cross section I, we know the span and section modulus (Z) then how will i calculate the liing capacity of EOT crane? Reply shivaswamy , on January 19, 2012 at 1:18 pm said:

Dear sir, Its nice to see the design of hoists. can you help us in design of eot cran, jib crane and grab buckets. we are manufacturers of these.we look forward to a fruitful business co-operation. with regards, shivaswamy, General Manager Reply Lakshmi industries , on February 8, 2012 at 1:38 pm said:

PL GIVE ME A SAMPLE DESIGN CALCULATION FOR FOLLOWING EOT CRANES VARIANTS 10T cap EOT crane Double girder. Span 27mtrs,height of the li 8mtrs Gantry crane 5T cap Span 12mtrs Heighte of the li 5mtrs Gib crane 5t Fixed location 180degree 4mtrs C.T,5mtrs heighte Please send Design with formulas Reply Dhiraj Gupta , on July 9, 2012 at 11:01 am said:

Please share the design procedure of EOT crane Reply rajesh , on February 23, 2012 at 12:32 pm said:

CAN ANYBODY TELL ME THE APPROX WEIGHT OF E0T CRANE OF 70 T CAPACITY OF 12 M SPAN

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Reply NeeleshGaikwad , on March 10, 2012 at 11:25 pm said:

Hello all, if anybody wants to know the design results of your required crane, send me your eot crane requirement data sheet, I can design it for you. Only double girder eot cranes from 10 Tons to 300 Tons. [email protected] Reply NeeleshGaikwad , on March 11, 2012 at 8:10 am said:

you may also visit eotcranedesigner.wordpress.com and request ur design. Reply Crane Drawing , on April 4, 2012 at 10:59 am said:

Good post. I learn something totally new and challenging on websites I stumbleupon on a daily basis. It’s always useful to read through content from other writers and practice something from other websites. Reply Francis , on May 19, 2012 at 1:53 pm said:

Hello, can anyone give me a book reference of what to consider in designing a girder to column connection for a hoist crane having 12.5T capacity… Thank you… Reply Sanjay Kumar Behera , on June 1, 2012 at 2:26 am said:

Hoist Design Procedure for EOT Crane… _ Tech Expert

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