Bulk Handling Today April 2017

BULK

HANDLING Endorsed by: CMA l LEEASA l SAIMechE l SAIMH

T O D A Y

April 2017

FOCUS ON JUNIOR MINERS 24/7 LIFTING CAPABILITY

S15197

A trusted industry leader For more than 90 years, Scaw, a South African industry leader, has been a preferred supplier to the lifting and rigging industry.

From wire & strand products, Haggie® Steel Wire Rope, chain products as well as fittings and attachments, Scaw continues to design and deliver the highest quality products to customer specifications.

Highly qualified teams with extensive experience in all aspects of the application of our products are on call to advise and support the selection, handling, installation and maintenance of products vital to driving safety, productivity and profit in the lifting and rigging industry.

www.scaw.co.za

More than steel.

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HANDLING

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T O D A Y

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The South African Institute of Materials Handling

Sample

The South African Institute of Materials Handling (SAIMH) is a Non-Profit organisation set up with an objective to encourage the transfer of knowledge associated within the fields of Bulk Materials Handling (conveyors, stacker, reclaimers, tipplers, train loading systems, etc.) through a combination of seminars and networking sessions.

The SAIMH is made up of professional engineers, each practising their trade in a variety of organisations who volunteer their time to execute the SAIMH’s objective. The main aim is thus to promote the advancement of the art, science, theory and practice of the Bulk Materials Handling principles and techniques.

Company Affliates as at April 2017 Afripp Projects cc Brelko Conveyor Products (Pty) Ltd Bulkcon CPM Engineering CT Systems cc Conveyor Watch (Pty) Ltd David Brown Gear lndustries (Pty) Ltd ELB Engineering Services (Pty) Ltd Engicon Systems (Pty) Ltd Facet Engineering cc Flexco (SA) (Pty) Ltd

Hagglunds Drives SA (Pty) Ltd Hansen Transmissions SA (Pty) Ltd Hatch Goba (Pty) Ltd lllustech J & A Engineering Services Kimrae Engineering Prolects Loadtech Load Cells (Pty) Ltd MacsteelVRN Martin Engineering Melco Conveyor Equipment Morris Material Handling SA (Pty) Ltd

Osborn Engineered Products (Pty)Ltd PD Engineering Services cc PH Projects Holdings (Pty) Ltd Rio Carb (Pty) Ltd Sandvik Materials Handling Africa Screw Conveyors & Material Handling Senet SEW Eurodrive Spar Western Cape SSAB South Africa (Pty) Ltd Tenova Zest Electric Motors (Pty) Ltd

4 BULK TODAY 2017 Tel: (011)HANDLING 867-0902  Fax:April (011) 867-0036  Email: saimh@global.co.za  www.saimh.co.za

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Your boutique business destination Surrounded by lush gardens in the hub of Johannesburg’s northern suburbs, The Peartree in Craighall Park caters for groups of two through to 100 guests in nine well-appointed and equipped business suites.

Breakfast meetings, working lunches, indoor or outdoor dining, half-day and full-day packages including all welcome refreshments, teas and lunches are offered in Standard, Gold and Platinum packages.

Secure parking, business centre, fibre optic broadband AV, lockable space, and an onsite Hair & Beauty Boutique, all underpinned by highly qualified and helpful staff dedicated to ensuring your event is a success, make The Peartree a destination of choice.

www.thepeartree.co.za e-mail: info@thepeartree.co.za Tel: 011 781 1401 41 St. Albans Ave, Craighall Park

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ENDORSER OF “BULK HANDLING TODAY”

LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SA

• A recognised ECSA Voluntary Association (VA) •

LEEASA is a fully-fledged association devoted to the lifting industry across Southern Africa. Members hale from the crane, forklift, mobile elevated work platform, aerial and suspended access platform, chain hoists, rigging and lifting tackle arenas, etc. Primarily devoted to the LMI’s (Lifting Machinery Inspectors), and LME’s (Lifting Machinery Entities), the association considers safety paramount. As such it serves in an advisory capacity to the SABS, the Department of Labour, various training bodies and the industry at large. LEEASA is recognised by ECSA as a voluntary association.

What’s in it for you:

As an Individual member who is registered as a Lifting Machinery Inspector (LMI), you may qualify for any concessionary fee granted by ECSA (this could save you over R1 000 a year).

and other training courses accredited by the association attract ECSA CPD points.

ECSA registered LEEASA members are awarded one Continuing Professional Development (CPD) credit each year. CPD is an ECSA requirement to retain registration.

Members benefit from the collective power of a recognised and established association and collective co-ordination in dealing with authorities in policy making and matters concerning the industry.

Members obtain a discount on LEEASA seminars. Both these

LEEASA has some 500 members (Individuals and Companies).

• • •

LEEASA Occupational Health & Safety Act and Regulations LEEASA Mine Health & Safety Act and Regulations LEEASA Lifting Equipment Inspection & Legal Compliance Register

Available for purchase online at www.leeasa.co.za

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LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SOUTH AFRICA Head Office: 8 Boris Road, Bordeaux, Randburg, Johannesburg P.O.Box 2348, Pinegowrie. 2123, Republic of South Africa Tel: 074 900 8378 • www.leeasa.co.za Secretary: Arni Sommer • email: arni@leeasa.co.za

BULKHANDLING HANDLINGTODAY TODAY BULK

April 2017 2012 February

LIFTING Guide 2017/18

“T

here is a real need in our industry for a one-stop reference guide that can be used by our members and users alike to navigate through the many safety and inspection requirements in manufacturing, selling, owning and operating lifting equipment,” says Ken Greenwood, Chairman of LEEASA (Lifting Engineering Equipment Association of SA).

Ken Greenwood Chairman of LEEASA

“Having had a long history of putting together an annual Lifting Guide, together with Promech Publishing, publishers of “Bulk Handling Today”, we intend the revised issue of the Guide (2016/2017) to be a comprehensive and a definitive publication, so much so that I would have no hesitation in recommending it as an authoritative self-standing training manual in our industry,” Ken adds.

“This is an important mouthpiece for LEEASA as the only dedicated annual guide we endorse. It will be an accessible and clear guide on everything you need to know about lifting engineering equipment.”

The Guide will include: An in-depth explanation of the Regulations governing the lifting industry Clear information on which standards apply to the industry and how to interpret any grey areas Broad guidelines for manufacturers of lifting equipment and how to address safety concerns in this arena.

Information on maintenance: inspection criteria, intervals and accompanying documentation Updated information on the various types of lifting equipment on the market.

LIFTING Guide 2016/17

Also publishers of “Bulk Handling Today”

If you would like your product or service to feature in this definitive Guide, Contact: Lyn Patricio

Tel: 011 781 1401 / 083 637 7122 E-mail: bulkhandling@promech.co.za

Rob Darby

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Altra

®

Industrial Motion

South Africa (Pty) Ltd

THE POWER OF EXPERIENCE A complete range of industrial and high performance couplings together with a comprehensive selection of torque limiting products available from a single source.

Turboflex Couplings

Gear Couplings Marland Backstops Grid Couplings Westcar Rotofluid Couplings

Unit 11. Middle Park, Cnr.Craig & Dormehl roads, Anderbolt, Boksburg.

PO Box 16524, Atlasville, 1465 Tel: +27 11 918 4270 • Fax +27 11 918 4240 • Email: salesza@altramotion.com

BULK HANDLING TODAY

Svendborg Brakes

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WE’VE GOT THE DRIVE

BMG leads the market with an unparalleled portfolio of mechanical power transmission products, supported on-site by 140 specialized Field Service technicians. So whether it’s supplying components, expertise or training, BMG is driven to enhance your production process and plant efficiency, 24/7/365 Our power transmission products are an integral part of BMG’s world of process solutions, and include: • Drive Belts & Pulleys • Transmission & Conveyor Chain • Cable Carrier Systems

• Couplings & Clutches • Sprockets & Bushes • Drives, Motors & Inverters

For more information contact: Tel: 011-620 1500, or visit your nearest BMG branch.

BULK HANDLING TODAY BMG-PT24032017 - BHT

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Simon Curry, Flexco (Pty) Ltd

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Figure 1. Idler cross-section From SANS 1313 Part 3 [3]

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Figure 2. Cross-sectional bearing details

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2

3

4

5

6

7

8

9

10

35

40

6 307

6 308

556 556 556 556 556 556 556 556 556 556 556 553 468 468 445 405

687 687 687 687 687 687 687 687 687 687 687 687 687 687 687 637

3 670

4 995

Series 20

25

420 204 Belt width mm 400 450 500 600 750 900 1 050 1 200 1 350 1 500 1 650 1 800 2 000 2 100 2 200 2 400

420 205

6 306

Allowable dynamic load on the centre roller b (kg)

Gauge mm 180 200 210 250 300 350 400 460 510 570 620 670 750 775 810 880

6 205

30 Bearing reference number a 6 305 6 206

174 174 174 174 174 164 139 119 105 93 85 78 69 66 63 58

213 213 213 213 213 213 213 213 213 213 207 190 168 162 154 141

1 019

2 243

235 377 327 471 235 377 327 471 235 377 327 471 235 377 327 471 235 377 327 471 235 370 327 471 235 312 327 471 235 263 327 471 235 232 327 441 221 204 327 385 201 185 327 349 184 169 327 319 163 149 315 281 157 144 304 270 149 137 289 257 136 125 264 234 Allowable static load on the centre roller (kg) 1 427 2 365 2 283 3 262

NOTE 1 The above loads do not include the rotating mass of the roll.

NOTE 2 The rotating mass of the roll should be subtracted from the above loads.

This bearing reference number does not constitute endorsement by the SABS Standards Division of any particular product.

Shafts are plain and not stepped.

Table 1. Three-roll troughing and impact idlers a b

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Figure 3. Finite element analysis illustrating deflection of the bearing housing

Figure 4. Homemade manometer

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Figure 6. Temperature controller

Figure 7. Idler wrapped with a heating element

Figure 8. Epoxy sealed bearing

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Figure 9. Section illustrating flood line

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DIFFERENTIAL EXPANSION OF SHAFT AND SHELL LENGTH (in mm) Temp variance in degrees Celsius 0 10 20 30 40 50 60

Increase in length of the 390 lg trough roller Polymer shell 0.00 0.39 0.78 1.17 1.56 1.95 2.34

Steel shaft Variance Polymer shell 0.00 0.00 0.00 0.04 0.35 1.15 0.08 0.70 2.29 0.12 1.05 3.44 0.16 1.40 4.58 0.20 1.76 5.73 0.23 2.11 6.88 Co-efficient of expansion for steel: 0.00001 Co-efficient of expansion for polymer: 0.0001

Table 2. Differential expansion of shaft and shell length

Figure 10. Conventional idler loading condition

Figure 11. Extract from equivalent conveyor calculation

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Increase in length of the 1 146 lg return roller

April 2017

Steel shaft 0.00 0.11 0.23 0.34 0.46 0.57 0.69

Variance 0.00 1.03 2.06 3.09 4.13 5.16 6.19

Figure 12. Sag tension force diagram — Running — Sag Run = 2.0%

Belt Tensions - FL-N

70 60 50 40 30 20 10

Carry Side

Return Side

0 0 50 100 150 200 250 300 350 400 Station (m)

Figure 13. Typical tension graph

SENSITIVITY ANALYSIS OF SAG TENSION Idler pitch: 1370 Tension in belt: 9.57 Material loading: 129.73 Belt loading: 26.4 Idler rot mass: 14.7 Load excl sag: 170.83 Percentage sag: 0.0200 Force angle: 2.29 Additional force: 77.88 Total force: 248.7 Table 3. Sensitivity analysis of

1370 1370 25 30 129.73 129.73 26.4 26.4 14.7 14.7 170.83 170.83 0.0077 0.0064 0.8775 0.7313 78.06 78.06 248.9 248.9 sag tension

1370 35 129.73 26.4 14.7 170.83 0.0055 0.6268 78.06 248.9

1370 40 129.73 26.4 14.7 170.83 0.0048 0.5485 78.06 248.9

1370 45 129.73 26.4 14.7 170.83 0.0043 0.4875 78.06 248.9

1370 50 129.73 26.4 14.7 170.83 0.0038 0.4388 78.06 248.9

1370 55 129.73 26.4 14.7 170.83 0.0035 0.3989 78.06 248.9

1370 60 129.73 26.4 14.7 170.83 0.0032 0.3656 78.06 248.9

1370 65 129.73 26.4 14.7 170.83 0.0029 0.3375 78.06 248.9

BULK HANDLING TODAY

1370 70 129.73 26.4 14.7 170.83 0.0027 0.3134 78.06 248.9

April 2017

mm kN kg kg kg kg % deg kg kg

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SENSITIVITY ANALYSIS OF MISALIGNMENT Idler pitch: 1370 Tension in belt: 9.57 Material loading: 129.73 Belt loading: 26.4 Idler rot mass: 14.7 Load excl sag: 170.83 Percentage sag: 0.0022 Force angle: 0.2509 Additional force: 8.54 Total force: 179.4 Table 4. Sensitivity analysis of

1370 1370 25 30 129.73 129.73 26.4 26.4 14.7 14.7 170.83 170.83 0.0022 0.0022 0.2509 0.2509 22.32 26.79 193.2 197.6 misalignment

1370 35 129.73 26.4 14.7 170.83 0.0022 0.2509 31.25 202.1

1370 40 129.73 26.4 14.7 170.83 0.0022 0.2509 35.71 206.5

1370 45 129.73 26.4 14.7 170.83 0.0022 0.2509 40.18 211.0

1370 50 129.73 26.4 14.7 170.83 0.0022 0.2509 44.64 215.5

1370 55 129.73 26.4 14.7 170.83 0.0022 0.2509 49.11 219.9

1370 60 129.73 26.4 14.7 170.83 0.0022 0.2509 53.57 224.4

1370 65 129.73 26.4 14.7 170.83 0.0022 0.2509 58.04 228.9

1370 70 129.73 26.4 14.7 170.83 0.0022 0.2509 62.50 233.3

mm kN kg kg kg kg % deg kg kg

SENSITIVITY ANALYSIS OF SAG AND MISALIGNMENT COMBINED Idler pitch: 1370 1370 1370 1370 1370 1370 1370 1370 1370 1370 1370 mm Tension in 9.57 25 30 35 40 45 50 55 60 65 70 kN belt: Material 129.73 129.73 129.73 129.73 129.73 129.73 129.73 129.73 129.73 129.73 129.73 kg loading: Belt 26.4 26.4 26.4 26.4 26.4 26.4 26.4 26.4 26.4 26.4 26.4 kg loading: Idler rot 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 kg mass: Material and 170.83 170.83 170.83 170.83 170.83 170.83 170.83 170.83 170.83 170.83 170.83 kg belt load: Percentage 0.02 0.007658177 0.006381814 0.005470126 0.00478636 0.004254543 0.003829088 0.003480989 0.003190907 0.002945453 0.002735063 % sag: Misalignment 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 0.002189781 % factor: Sag and 0.0222 0.0098 0.0086 0.0077 0.0070 0.0064 0.0060 0.0057 0.0054 0.0051 0.0049 % Alignment: Force 2.5411 1.1283 0.9821 0.8777 0.7994 0.7384 0.6897 0.6498 0.6166 0.5884 0.5643 deg angle: Additional 86.50 100.37 104.84 109.30 113.77 118.23 122.70 127.17 131.63 136.09 140.56 kg force: Total force: 257.3 271.2 275.7 280.1 284.6 289.1 293.5 298.0 302.5 306.9 311.4 kg Table 5. Sensitivity analysis of sag and misalignment combined MATERIAL CONDITION Fine Grained Individual small chips Coarse chips on layer of cushioning material Coarse chips without layer of cushioning material Exclusively coarse lumps Table 6. Current values used by industry

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LUMP FACTOR Fixed Idler Garland set Idler set 0 0 0.005 0 0.009 0.005 0.014 0.009 0.05 0.02

Lifting Solutions That Work.

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MARKET FORUM

Mobile Harbour Crane The Danish company, A Henriksen Shipping A/S, recently signed a contract for a new multi-purpose Liebherr mobile harbour crane, type LHM 550 with a total lifting capacity of 144 tonnes.

Operating out of the ports of FrederiksvĂŚrk and Hundested, north of Copenhagen, the company offers a wide range of services within shipping, transport and logistics, handling most types of

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cargo including bulk, break bulk, ro-ro, heavy lift/project cargo etc.

In 2007, A. Henriksen Shipping bought their first Liebherr mobile harbour crane LHM 400. Since then the company has been highly satisfied with the reliability and the performance of the crane. That is why they opted for another Liebherr product in order to boost their terminal productivity.

MARKET FORUM

Ten years after the first LHM purchase, they will shorty celebrate the arrival of a new LHM 550 at the port of FrederiksvĂŚrk in which A. Henriksen Shipping is loading and discharging some 400 ships per year.

The new mobile harbour crane, type LHM 550, will be used to lift steel slabs with a total weight of up to 61 tonnes each. With a maximum lifting capacity of up to 144 tonnes, the new machine will be also in use for heavy lift/project cargo operation.

Liebherr, Philipp Helberg, Email: Philipp.Helberg@liebherr.com www.liebherr.com

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MARKET FORUM

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MARKET FORUM

L to R: Ritesh Ramjattan - Business Manager Africa Goscor Lift Truck company, Wessel Wessels - owner Coastal Hire Botswana, Randhir Haripersad - Goscor Group GM for Africa and Brenda Gerber - owner Coastal Hire Botswana

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MARKET FORUM

Godfried Heydenrych, Chief Executive of Barloworld-BayWa (BHBW)

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