New Edition of

Engineering Science And Application Design For Belt Conveyors

by Ishwar G. Mulani

The new edition of this well-known book on belt conveyors with additional chapters, topics and latest information (740 pages instead of 645 pages in earlier print) is on sale. Attached you find the Contents pages of this book.

The book additional portion includes important topics for the current issues of keen interest; such as idler diameter and pitch by mathematical calculation as a design office solution; horizontal curved conveyor design introduction, travelling tripper design analyses, foundation load calculation and rationalised presentation, additional information for pulleys, etc. All are presented in a interesting and transparent manner.

CONTENTS

Chapter 1Bulk material handling plants and conveyors1 to 9

1.0.0 Need for bulk material handling plant with conveyors1 to 2

1.1.0 Introduction to bulk material handling plant2 to 9

1.1.1 System description4 to 7

1.1.2 List of major equipment and structures for the plant7 to 9

Chapter 2 Introduction to belt conveyor10 to 16

2.0.0 Introduction to belt conveyor10

2.1.0 Main mechanical components in a conveyor10 to 11

2.2.0Belt conveyor function11 to 12

2.3.0Conveyor-profiles (conveying-paths)12

2.4.0Method of feeding/loading belt conveyor13 to 14

2.5.0Method of discharge from belt conveyor14 to 16

Chapter 3Bulk materials17 to 24

3.0.0Bulk materials17

3.1.0Bulk density17

3.2.0Repose angle18

3.3.0Surcharge angle18 to 19

3.4.0Abrasiveness19

3.5.0Material size19

3.6.0Other characteristics19

3.7.0Material characteristic data (table-1)20 to 24

Chapter 4Belts25 to 73

4.0.0Belts25

4.1.0Carcass functions and types26

4.2.0Covers functions and types26 to 28

4.3.0Belt types28

4.4.0Textile fabric belts28 to 36

4.4.1Textile fabric multi-ply conventional belts30 to 33

4.4.2Reduced ply fabric belts (special ply fabric belts)34 to 35

4.4.3Fabric belt data for conveyor design35 to 36

4.5.0Steel cord belts36 to 39

4.5.1Steel cord construction37

4.5.2Steel cord belt construction37 to 38

4.5.3Steel cord belt characteristics and application38

4.5.4Steel cord belt range38 to 39

4.5.5Steel cord belt data for conveyor design39

4.6.0Design requirements in belt selection39 to 61

4.6.1Stiffness/load support39

4.6.2Impact strain39 to 42

4.6.3Belt tension rating42 to 43

4.6.4Troughability43

4.6.5Belt cover thickness43 to 46

4.6.6Choice of carcass type46 to 47

4.6.7Belt selection procedure47 to 48

Examples-1, 2, 3 & 449 to 59

4.6.8Note on energy loss / carry forward factor for a lump59 to 61

Fabric belts’ table 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2f and 2j61 to 69

Steel cord belts’ table 3a, 3b, 3c and 3d70 to 73

Chapter 5Idlers74 to 134

5.0.0Idlers74

5.1.0Idlers function74 to 75

5.2.0Rolls (Rollers)75 to 80

5.2.1Shell76 to 77

5.2.2Housing77

5.2.3Sealing77

5.2.4Bearings77 to 78

5.2.5Spindles78

5.2.6Greasing78

5.2.7Roll breathing79 to 80

5.2.8Roll Quality80

5.3.0Fixed frame idlers81 to 88

5.3.1Troughing idlers (Trough carrying idlers)81 to 82

5.3.2V - trough carrying idlers (2 - roll trough carrying idlers)83

5.3.3Flat carrying idlers83 to 84

5.3.4Impact idlers (Trough impact idlers)84

5.3.5V - type impact idlers (2 - roll impact idlers)84

5.3.6Flat impact idlers85

5.3.7Flat return idlers (Single roll return idlers)85

5.3.8V - type return idlers (2 - roll return idlers)85 to 86

5.3.9Self aligning carrying idlers (S.A. carrying idlers)86

5.3.10Self aligning return idlers (S.A. return idlers)86 to 87

5.3.11Special purpose idlers87 to 88

5.4.0Garland idlers88 to 95

5.4.1Garland idler profile under load91

5.4.2Garland 3 - roll carrying idlers91 to 92

5.4.3Garland 5 - roll carrying idlers92

5.4.4Garland 3 - roll impact idlers92 to 93

5.4.5Garland 5 - roll impact idlers94

5.4.6Garland 2 - roll return idlers94 to 95

5.5.0Main reason for belt misalignment95 to 97

5.5.1Misaligned idlers center line96

5.5.2Off center loading of material96 to 97

5.5.3Wind force97

5.5.4Misaligned center line of pulleys97

5.5.5Faulty belt carcass97

5.6.0Engineering analysis of selfaligning action by idlers 98 to 115

5.6.1Pivoted self-aligning idler (includes example-1)98 to 103

5.6.2Inclined aligning force effect along conveyor width (includes example-2)103 to 106

5.6.3S.A. force due to trough shape and gravity (includes example-3)106 to 108

5.6.4Forward tilt for idlers (includes example-4)108 to 111

5.6.5S.A. force due to bow - string effect (includes example-5)112 to 115

5.7.0Rollers and idler- sets dimensions (includes table-4)115 to 119

5.8.0Roller design (includes table-5 and example-6, 7 & 8)119 to 123

Table - 6 : Rotating mass of one roller124 to 131

Example-9 on breathing hole132 to 134

Chapter 6Capacity evaluation in system135 to 141

6.0.0Capacity evaluation in system135

6.1.0Guaranteed capacity135

6.2.0Design capacity135 to 136

6.3.0Examples-1, 2 & 3 for capacity calculation136 to 140

6.4.0Notes on conveyor capacity (for load / forces)140 to 141a

Chapter 7Belt width, speed and capacity142 to 207

7.0.0Design for belt width, speed and capacity142

7.1.0Functional requirements for belt width142

7.2.0Necessary belt width for lump size142 to 148

7.2.1Belt width for material - X144

7.2.2Belt width for material - Y144 to 145

7.2.3Other consideration to lump size145 to 148

Table – 7: Permissible maximum lump size (for belt width)146 to 148

7.3.0Selection of surcharge angle (includes table-8)148 to 150

7.4.0Recommended belt speeds (guide values)151 to 153

Table – 9: Recommended maximum belt speed in m /sec152

7.5.0Necessary belt width for capacity154 to 207

7.5.1Material cross - section on belt155

7.5.2Cross - section on belt - 3 roll troughing idlers (for equal / unequal roll) - derivations155 to 161

7.5.3Cross - section on belt - 2 roll troughing idlers - derivations161 to 164

7.5.4Cross - section on flat belt - derivations165 to 166

7.5.5Cross - section on belt - 5 roll troughing idlers - derivations166 to 172

7.5.6Effect on cross - section by gap between rollers (includes table-10 & 11)173 to 174

7.5.7Comparison of area, parabolic and circular arc (includes table-12)174

7.5.8Reduction in cross section area due to belt bending radius175

7.5.9Reduction in cross - section area due to conveyor inclination175 to 177

7.5.10Reduction in cross - section area or conveying ability due to fill factor177 to178

7.5.11Conveyor potential (ability) for capacity178 to 179

7.5.12Principles for selection of belt width and speed 179 to 181

7.5.13Use of table - 13, 14, 15, 16, 17, 18 and 19 for cross – section area on belt181 to 182

7.5.14Examples-1, 2 & 3182 to 188

Table - 13: Material cross – section area (parabolic arc) for 3 – roll idler189 to 193

Table - 14: Material cross - section area (circular arc) for 3 – roll idler194 to 198

Table - 15: Material cross - section area (parabolic arc) for 2 – roll idler199 to 200

Table - 16: Material cross - section area (circular arc) for 2 – roll idler201 to 202

Table - 17: Material cross - section area (parabolic arc) for flat roll idler203

Table - 18: Material cross - section area (circular arc) for flat roll idler204

Table - 19: Material cross - section area (parabolic arc) for 5 - roll idler205 to 206

Table - 20: Conveyor inclination factor207

Chapter 8 Material behaviour on belt208 to 261

8.0.0Material behaviour on belt for transverse load208 to 210

8.1.0Liquid side pressure / force211

8.2.0Rankine theory 212 to 221

8.2.1Active pressure / force212 to 213

8.2.2Passive pressure / force213 to 216

8.2.3Material side thrust on inclined face216 to 217

8.2.4Rankine theory application to material on belt217 to 221

Table - 21: Rankine factors 218

8.3.0Coulomb - Rebhann wedge theory (coulomb theory)221 to 235

8.3.1Active force Fa per meter223 to 224

8.3.2Passive force Fp per meter length of conveyor224

8.3.3Effective force Fs on side roller, per meter length of conveyor225 to 226

8.3.4Derivation of wedge slope 226 to 234

Table - 22: Coulomb factors235

8.4.0Method - 3 (Empirical method)235 to 236

8.5.0Method - 4 (ISO formula) 237

8.6.0Load on middle roller (includes table-23)237 to 238

8.7.0Concluding remark 238 to 239

8.8.0Belt edge clearance “C” at 90 % utility of material cross section on 3 - roller idler set239 to 240

(includes table-24 & 25)

8.9.0Examples-1, 2, 3, 4, 5, 6, 7 & 8240 to 261

Chapter 9Belt cleaners262 to 280

9.0.0Belt cleaners262

9.1.0External belt cleaner262 to 278

9.1.1Single blade external belt scraper (cleaner) 263 to 264

9.1.2Double blade external belt scraper (cleaner)264

9.1.3Skew multi - blade external belt scraper (cleaner)264 to 265

9.1.4Cleaning force analysis265 to 271

9.1.5Specialised external belt scraper (cleaner)271 to 274

9.1.6Comparison between conventional and specialised blade scraper274 to 275

9.1.7Other external cleaners275 to 278

9.2.0Internal belt cleaner278 to 279

9.3.0Pulley cleaner279 to 280

9.4.0Scraper design parameters280

Chapter 10Belt tractive pull and power 281 to 364

10.0.0Belt tractive pull and power281 to 282

10.1.0Symbols for engineering quantities282 to 285

10.2.0Basic engineering rules on friction285 to 287

10.3.0Method adopted for calculation of the tractive pull at steady state287

10.4.0Slope resistance, Fsl287 to 289

10.4.1Slope resistance carrying run, Fslc287 to 288

10.4.2Return run slope resistance, Fslr288 to 289

10.5.0Material acceleration resistance, Fa289 to 290

10.6.0Main resistance290 to 315

10.6.1Rotational resistance of idlers290 to 293

10.6.2Belt flexure resistance293 to 294

10.6.3Material flexure resistance294 to 295

10.6.4Basis for artificial friction coefficient of conveying, ‘f’295 to 296

10.6.5Calculation of ‘f’ for conveyor with positive power296 to 298

10.6.6Calculation of ‘f’ for conveyor with negative power298 to 299

10.6.7Division of ‘f’ into constituent coefficients (includes table-26, 26A, 27 & 27A)299 to 303

10.6.8Reasons for earlier said + increment in ‘f’ (includes table-28, Ex. 1, 2, 3, 4, 5 & 6) 303 to 315

10.7.0Idlers tilt resistance 315 to 326

10.7.1Tilt resistance by a roller 316 to 317

10.7.2Tilt resistance for 2 - roll return idlers317 to 318

10.7.3Tilt resistance for 2 - roll carrying idlers318 to 320

10.7.4Tilt resistance for 3 - roll troughing idlers (includes example-7 & 8)320 to 322

10.7.5Forward tilt for garland idlers due to inclination (includes example-9)323 to 326

10.8.0Skirt board resistance, Fsk1 and Fsk2326 to 339

10.8.1Acceleration zone length La within skirt - board (includes example-10, 11, 12 & 13)327 to 336

10.8.2Skirt - board resistance, Fsk1336 to 337

10.8.3Skirt - board resistance, Fsk2 (includes example-14)337 to 339

10.9.0Belt scraper’s (cleaner’s) resistance339 to 341

10.9.1External belt cleaner resistance, Fce340

10.9.2Internal belt cleaner resistance, Fci (includes example-15)340 to 341

10.10.0Rotary nylon brush cleaner (external belt cleaner), Fce341

10.11.0Rotary rubber blades cleaner (external belt cleaner), Fce341 to 342

10.12.0Pulley cleaner resistance, Fcp342

10.13.0Discharge plough resistance (includes example-16 & 17)342 to 347

10.14.0Resistance due to related machine347 to 349

10.14.1Plough feeder347

10.14.2Travelling tripper (includes example-18)348

10.14.3Reclaimer machine349

10.14.4Fixed tripper349

10.15.0Pulley turning resistance, Ft349 to 350

10.16.0Belt wrap resistance around pulleys , Fw350 to 352

10.17.0Conveyor running resistance summary352

10.18.0Conveyor resistance summary table-29353 to 355

10.19.0This chapter and conveyor design 356

Example-19356 to 364

Chapter 11Take - up devices 365 to 385

11.0.0Take - up devices365

11.1.0Screw take - up 365 to 366

11.2.0Vertical gravity take - up 366 to 367

11.3.0Horizontal gravity take - up device368 to 370

11.4.0Winch take - up device (fixed type)370 to 373

11.4.1Stretching the belt for tension372

11.4.2Winch take - up operation372

11.4.3Application373

11.5.0Principles for take up effect on belt tensions373 to 377

11.5.1Floating take - up pulley (gravity force)373 to 374

11.5.2Non floating take - up pulley374 to 377

11.6.0Active winch take - up device377 to 378

11.7.0Accidental fall of gravity take - up mass (includes example-1)378 to 381

11.8.0Take up stroke (includes table-30 & 31, example-2)381 to 383

11.9.0Rope and sheave system particulars for take up384

11.10.0Sheave frictional resistance effect on take up force384 to 385

Chapter 12Drive units386 to 408

12.0.0Drive units386 to 387

12.1.0Electric motor387

12.2.0Gear boxes388 to 394

12.2.1Foot mounted worm gear box388 to 389

12.2.2Shaft mounted worm gear box389 to 390

12.2.3Horizontal foot mounted geared motor390 to 391

12.2.4Parallel shaft helical gear box391

12.2.5Bevel - helical gear box foot mounted391 to 392

12.2.6Bevel - helical gear box shaft mounted392 to 393

12.3.0Chain drive393 to 394

12.4.0V - belt drive394

12.5.0Mechanical power transmission efficiency of speed reduction mechanism

(includes table-32)394 to 395

12.6.0Flexible coupling395 to 399

12.6.1Pin & rubber bush coupling397

12.6.2Geared type flexible coupling397 to 398

12.6.3Grid type flexible coupling398 to 399

12.7.0Fluid coupling399 to 404

12.7.1Traction type fluid coupling399

12.7.2Traction type fluid coupling with delay chamber400 to 401

12.7.3Three chambers traction type special fluid coupling401

12.7.4Scoop type fluid coupling402 to 403

12.7.5Fill controlled turbo fluid coupling403 to 404

12.8.0Back stop (hold back)404 to 406

12.8.1Pawl and ratchet type405

12.8.2Differential band brake type405

12.8.3Free wheel type (Roller hold back and sprag type hold back)405 to 406

12.8.4Hold back (back stop) mounting406

12.9.0Guards407

12.10.0Base frame407

12.11.0Notes on drive units407 to 408

Chapter 13Belt tensions and conveyor design409 to 537

13.0.0Belt tensions and conveyor design409 to 411

13.1.0Minimum tension in belt411 to 415

13.1.1Minimum tension for application of tractive pull to belt411 to 413

13.1.2Minimum tension in belt to limit sag413 to 415

13.2.0Pulley belt friction coefficient and wrap angle (includes table-33, 34, 35 & 36)415 to 418

13.3.0Belt tension symbols418

13.4.0Principles for calculating tensions in belt at various locations419 to 422

13.4.1T3 during steady state operation419 to 420

13.4.2T3 during starting / stopping of conveyor420

13.4.3Calculation of tension T4421

13.4.4Belt tension TX at any point along conveyor421 to 422

13.5.0Effect on belt tensions due to number of drives422 to 423

13.6.0Drive distribution arrangement for conveyor423 to 427

13.6.1Drive distribution based on reduction in tension alone423 to 424

13.6.2Commonly used drive distribution (for economy, etc.)424 to 426

13.6.3Notes on drive distribution in conveyor427

13.7.0Take-up effect on tension calculation427 to 431

13.7.1Floating take-up pulley (gravity take-up)428 to 429

13.7.2Fixed take-up pulley (screw / winch take-up)429 to 431

13.8.0Equivalent linearly moving mass of belt conveyor431 to 433

13.8.1Equivalent moving mass for idlers, pulleys432

13.8.2Equivalent moving mass for drive unit432 to 433

13.9.0Material loading on partial length/s of conveyor433

13.10.0Relationship among conveyor starting (braking) factors434 to 439

13.10.1Starting factors relationship (for conveyors of + resistance during steady state)435 to 437

(includes example-1)

13.10.2Braking factors relationship (for conveyors of + resistance during steady state)437 to 439

13.11.0Idler spacing (includes table-37)440 to 441

13.12.0Adjustment in value of conveying resistance to suit calculation purpose441 to 443

13.12.1Belt conveyor of positive power442

13.12.2Belt conveyor of negative power (regenerative conveyor)442 to 443

13.13.0Belt carcass selection for longitudinal strength443 to 447

13.13.1Safety factors for belt tensions443 to 445

13.13.2Belt unit strength at joint445

13.13.3Joint efficiency445 to 446

13.13.4Belt strength selection (includes example-2)447

13.14.0How to proceed with design447 to 448

13.15.0Conveyor length coefficient-C448 to 449

13.16.0Design input basic quantity calculation449 to 454

13.16.1Conveyor drawing / sketch with basic features449 to 450

13.16.2Material load per meter length on belt, Mm kg / m450

13.16.3Carrying side idlers rotating mass per meter length of conveying route. Mc kg / m450 to 451

13.16.4Return idlers rotating mass per meter length of conveying route. Mr kg /m451 to 452

13.16.5Volumetric conveying capacity design, I m3 / sec452

13.16.6Artificial friction coefficient of conveying ‘f’452

13.16.7Belt mass per meter length, Mb452 to 454

Table-38 Values of coefficient “C” (average)454

13.17.0Design procedure for belt conveyor tractive pull and belt tensions454 to 465

13.17.1Original design input: IP-1454 to 455

13.17.2Generation of design input:IP-2455

13.17.3Generation of design input:IP-3455 to 456

13.17.4Conveyor design stage-I456 to 464

13.17.5Conveyor design stage-II464 to 465

13.18.0Use of fs1, fs2, fb1 and fb2 for conveyor design465 to 479

13.18.1Drive type-1, without fluid coupling466 to 468

13.18.2Drive type-2, with fluid coupling468 to 470

Example-3 & 4470 to 475

13.18.3Starting factors relationship (for conveyor of negative resistance steady state)475 to 476

13.18.4Braking factors relationship (for conveyor of negative resistance steady state)476 to 477

13.18.5Conventional values of belt line starting factor (includes table-39 & 40)477 to 479

13.19.0Use of standards / codes in conveyor design479 to 480

Example-5480 to 499

13.20.0The design capacity for load on conveyor499 to 501

Example6501 to 518

13.21.0Material stability on belt under acceleration / deceleration518 to 520

Example-7520 to 532

13.22.0Tension diagram533 to 537

13.22.1Plotting/depiction of tension diagram533

13.22.2Type of tension diagrams533 to 534

13.22.3Some tension diagrams534 to 537

Chapter 14Drive unit functional requirements538 to 547

14.0.0Drive unit functional requirements538

14.1.0Electric motor538 to 540

14.1.1Conveyor load torque - speed curves (without acceleration)539

14.1.2Ideal torque - speed curve of a prime mover539

14.1.3Squirrel cage induction motor torque - speed curve539 to 540

14.2.0Basic guide lines for drive / motor selection540 to 545

14.2.1Type - 1 drive (without fluid coupling)541 to 543

14.2.2Type - 2 drive (with fluid coupling)543 to 545

14.3.0Calculation for starting time545 to 547

Chapter 15Pulleys548 to 568

15.0.0Pulleys (includes table-41)548 to 549

15.1.0Conventional pulleys (pulleys with plate diaphragms)549 to 554

15.1.1Pulley construction550 to 551

15.1.2Plummer blocks551 to 552

15.1.3Rubber lagging (includes table-42)552 to 553

15.1.4Pulley crowning553 to 554

15.2.0Pulley behaviour under load (brief information)554 to 555

15.3.0Pulley with turbo – diaphragms555 to 558

15.3.1Pulley construction556 to 557

15.3.2Taper lock elements557 to 558

15.3.3Other components of turbo diaphragms pulley558

15.4.0External forces acting on pulley558 to 559

15.5.0Pulley shaft design559 to 568

15.5.1Basic information on forces, torque and bending moment acting on pulley shaft559 to 561

15.5.2Theories on shaft design based on stresses561 to 565

15.5.3Shaft deflection566

Example:567 to 568

Chapter 16Conveyor frame569 to 587

16.0.0Conveyor frame569

16.1.0Frame for stationary conveyor569 to 576

16.1.1Head terminal570

16.1.2Tail terminal571

16.1.3Bend-pulleys support572

16.1.4Stringers572

16.1.5Stands572 to 574

16.1.6Decking plate574 to 575

16.1.7Wind guard575 to 576

16.1.8Belt cover576

16.2.0Conveyor frame for shiftable conveyors576 to 587

16.2.1Application577 to 579

16.2.2Composition of shiftable conveyor frame579 to 580

16.2.3Drive head station (DH)580 to 584

16.2.4Return station / Tail station (RS)584 to 585

16.2.5Modules (Intermediate stations)585 to 587

16.2.6Approach bridge587

16.2.7Intermediate feed station587

Chapter 17Super structure588 to 603

17.0.0Super structure (Elevated structure)588

17.1.0Conveying system needs super structures588 to 589

17.2.0Items of super structure589 to 590

17.3.0Design norms and requirements590 to 591

17.4.0Super structure specification with respect to application590 to 603

17.4.1Gantry (Open gantry)591 to 592

17.4.2Gallery (Closed type gantry)592 to 594

17.4.3Trestles594 to 595

17.4.4Houses for conveying system (Also includes some information on595 to 601springs and viscous dampers vibration isolation)

17.4.5Sheds601 to 603

17.4.6Cross over603

Chapter 18Conveyor profile in vertical plane604 to 612

18.0.0Conveyor profile in vertical plane604

18.1.0Curvature effect on tension distribution within belt604 to 605

18.2.0Nomenclature605 to 606

18.3.0Concave curvature / radius606 to 608

18.4.0Convex curvature / radius608 to 609

18.5.0Transition length (includes table-43)609 to 611

Example611 to 612

Chapter 19Introductory information on equipment associated with belt conveyor613 to 625

19.0.0Introductory information on equipment associated with belt conveyors613

19.1.0Feeders (belt feeders, vibrating feeders, apron feeders, and paddle feeders)613 to 615

19.2.0Belt weigher 615 to 616

19.3.0Magnetic separators (suspension magnet, cross belt type and in line belt type) 616 to 618

19.4.0Dust control equipment (dust extraction / collection type and dust suppression type)618 to 619

19.5.0Sampling system619 to 620

19.6.0Unloading equipment (wagon tippler, truck tippler and ship unloader)620 to 621

19.7.0Stockyard machines621 to 625

Stackers621

Reclaimers (side scraper reclaimer, portal scraper reclaimer, bridge type621 to 623

scraper reclaimer, bucket- wheel on boom and bucket wheel on bridge)

Blending / homogenization of bulk materials.623 to 625

19.8.0Horizontal curved conveyor, introductory information625 to 634

19.8.1Inward force (main), Fi625 to 626

19.8.2Belt and material usual forces on idler; Fu626 to 627

19.8.3 Outward forces (main); Fo627 to 628

19.8.4 Stabilising force Fs628 to 629

19.8.5 Belt stability in horizontal curve629 to 630

19.8.6 Combined influence of forces along interface, to actually shift belt630 to 631

19.8.7 Principal design checks for belt stability and numerical example-1631 to 634

Horizontal curved conveyor application 710

19.9.0Cylindrical belt conveyor or (pipe conveyor / tube conveyor) 634 to 635

Chapter 20 Material discharge trajectory 636 to 643

20.0.0 Material discharge trajectory at conveyor discharge pulley636

20.1.0 Free fall material motion, general rule637

20.2.0 Trajectory starting point location, from belt on pulley637 to 638

20.3.0 Case-1: [v2 ÷ (R . g)] ≥ 1.0638 to 639

20.4.0 Case-2: [v2 ÷ (R . g)] < 1.0639 to 640

Example640 to 643

Chapter 21Travelling tripper644 to 663

21.0.0 General644

21.1.0Construction 644 to 648

21.2.0Travelling tripper design648 to 649

21.3.0Tripper travel resistance and travel drive power649 to 659

21.3.1 Frictional resistances at interface of tripper and belt649 to 651

21.3.2 Material lift resistance at tripper651 to 652

21.3.3 Travel wheel system resistance652 to 654

21.3.4 Miscellaneous resistances654 to 655

Example-1655 to 659

21.4.0Concave Curvature Zone for Tripper659 to 661

21.4.1 Belt conveyor design to suit tripper660

21.4.2 Tripper concave radius660 to 661

Example661 to 663

Chapter 22Foundation loads664 to 672

22.0.0 Foundation Loads664

22.1.0General664 to 665

22.2.0General rule for calculating foundation load.665 to 667

22.3.0Foundation load depiction.667

22.4.0Static and dynamic loads667

22.5.0Belt conveyor items foundation load667 to 672

22.5.1 Tail terminal668

22.5.2 Head terminal668 to 670

22.5.3 Bend pulleys support frame670

22.5.4 Stringer-stand frame670 to 671

22.5.5 Drive units671 to 672

22.5.6 Vertical gravity take-up672

22.5.7 Super structure672

A-0.0Addendum 673-714

A-2.0Chapter-2, flow division by two way chute673 to 674

A-3.0Chapter-3, friction coefficient between material and steel plate674 to 675

A-4.0Chapter-4, book includes amended table-2f. Its related information in addendum.657 to 676

A-5.0Chapter-5676 to 697

A-5.1Idler diameter, pitch and stress strain in belt bottom cover676 to 677

A-5.2General information about rubber677 to 678

A-5.3Rubber stress strain characteristics678 to 682

A-5.4Usual method to find stress strain rubber block with example-5 / 1682 to 683

A-5.5Belt strain while on roller / idler683 to 686

Example-5/2, 5/3 and 5/4686 to 693

A-5.6Notes about rubber and stress strain characteristics693 to 694

A-5.7Belt sag approach angle to roller694 to 695

A-5.8Sag implication on belt stress strain695 to 696

A-5.9Notes about rubber and stress strain characteristics696 to 697

A-6.0Chapter-6, Variations in ship unloading rate due to sea level, fully loaded697 to 699

ship, partially loaded ship, etc. and grab bucket unloader test rated capacity

A-9.0External scraper additional information700 to 703

Example-9/1701 to 703

A-10.0Chapter-10703 to 704

A-10.1Conveyor friction coefficient ‘f’, its variability and design consideration for it,

installed power and consumed power703

A-10.2Information about idler diameter influence on ‘f’703

A-10.3Constituent of ‘f’ 703 to 704

A-13.0Chapter 13704 to 706

A-13.1General note about this chapter704

A-13.2Drive efficiency, derivation and explanation 704 to 706

A-15.0Chapter 15

Information about some materials for pulley and shaft706 to 707

Pulley hub-shaft connection (keyed mounting), fitment tolerance table-46 & 47707 to 709

some information about turbo-diaphragm pulley 710

A-19.0Horizontal curved conveyor application 710 to 711

A-19.1Curved chute for feeding belt conveyor 711 to 714

Conveyor load mk2 with reference to motor shaft715

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12)Book on “Belt Feeder Design and Hopper Bin Silo”, Author - Ishwar G Mulani.

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Please also open the attached PDF for better presentation.

Additional information:

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http://www.google.com/search?q=mulan...=lnms&tbm=ischsearch?q=mulani+site:bulk online.com&hl=en&client=safari&rls=en&source=lnms&tbm=isch

Attachments

content_book on belt conveyors (PDF)

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