BULK
HANDLING Endorsed by: CMA l LEEASA l SAIMechE l SAIMH
T O D A Y
May 2016
MOTORIZED PULLEYS
AFRICA’S PREMIER SUPPLIER OF CONVEYOR IDLERS, FRAMES, STRUCTURE & MOTORISED PULLEYS
setting up in chile operating in difficult terrain
BULK
HANDLING
BULK HANDLING TODAY
T O D A Y
May 2016
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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 May 2016 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 2016 Tel: (011)HANDLING 867-0902TODAY l Fax:May (011) 867-0036 l Email: saimh@global.co.za l www.saimh.co.za
Simon Curry
BULK HANDLING TODAY
May 2016
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ENDORSER OF “BULK HANDLING TODAY”
LIFTING EQUIPMENT ENGINEERING ASSOCIATION OF SA
LEEASA, formed in 2003, is a division of the Chamber of Engineering Technology (COET), a non-profit organisation. The association’s objectives include, but are not limited to: the transfer of knowledge and training within the field of the Lifting Industry, to improve safety, promote the use of standards and to promote Professional and Ethical practices.
I
t is represented on the Engineering Council of South Africa (ECSA) and a number of ECSA committees as well as on various task teams at the South African Bureau of Standards (SABS).
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). ECSA registered COET / LEEASA members are awarded one Continuing Professional Development (CPD) credit in category
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3 each year. CPD is an ECSA requirement to retain registration. Members obtain a discount on training and seminars validated by the association, especially useful in earning ECSA CPD credits. 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. LEEASA has some 500 members (Individuals and Companies).
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
BULK HANDLING TODAY
May 2016
BULK HANDLING TODAY
February 2012
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LIFTING G
” UIDE
“
2016/17
“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).
“Having had a long history of putting together a bi-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 deKen Greenwood Chairman of LEEASA finitive 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 2014/15 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 BULK HANDLING TODAY
May 2016
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Figure 1: Well-known horizontal take-up trolley design
Figure 2: Transfer of forces
Figure 3: Side view of optimised trolley
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BULK HANDLING TODAY
May 2016
Existing design
Optimised design
Ratio
Structural mass (kg)
968
395
0.4 of existing
Total weld length (m)
23.2
15.6
0.67 of existing
Capacity to mass ratio
413 KN/kg
1329 KN/kg
3.2
Table1: Summary of measurable improvements
Figure 4: Isometric view of optimised trolley
Figure 5: Nonlinear limit analysis of optimised design
Figure 6: Nonlinear limit analysis of existing design
BULK HANDLING TODAY
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DRIVING TECHNOLOGY DELIVERING PRODUCTIVITY Sandvik Mining is your single-source design, project construction and management provider for multi-disciplinary mining systems projects. Whatever your bulk materials handling need, we’ve got you covered. We specialize in underground, in-plant and long complex overland conveying systems, crushing and screening plants, total stockyard systems including stackers and reclaimers, spreader systems, IPCC systems, shiploaders and export terminals.
For enquiries, please contact +27 (0) 11 657 4600 MINING.SANDVIK.COM
Pedro Javier Vega, technical advisor at Weba South America
BULK HANDLING TODAY
May 2016
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SPECIALIST IN BULK MATERIALS HANDLING SOLUTIONS
BMG is Africa's foremost single-source supplier with a world of engineering components and service solutions for materials handling. We provide valuable insight into the technical requirements of your operating process as well as foresight as to how our technical expertise, design and onsite maintenance capabilities and training can all be applied to maximise your production efficiencies • • •
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Bearings • Seals • Power Transmission • Drives & Motors Materials Handling • Fasteners & tools • Hydraulics • Pneumatics Filtration • Lubrication • Valves • Technical resources • Field Services
BULK HANDLING TODAY
May 2016
Christo Venter of GaNala Plant Hire
BULK HANDLING TODAY
May 2016
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Coralynne & Associates +27 (011) 849 3142
ABSOLUTE MATERIAL FLOW CONTROL
ABSOLUTE MATERIAL FLOW CONTROL
• Optimum material flow • Up to 80% decrease in material degradation • Reduced dust and noise levels • Virtually maintenance free • Greatly reduced spillage • Significant reduction in belt damage
TM
SOUTH AFRICA
Phone: +27 (0) 11 827 9372 Email: info@webachutes.com
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BULK HANDLING TODAY
May 2016
BULK HANDLING TODAY
May 2016
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Brett DeVries, Flexible Steel Lacing Company, USA
LAGGING TYPES TESTED Diamond Full Medium Diamond Conditions rubber ceramic ceramic rubber ceramic Clean & Dry Yes Yes Yes Yes Wet Yes Yes Yes Yes Muddy Yes Yes Yes Yes Table 1. Lagging tests Full ceramic
Medium ceramic
Plain rubber Yes Yes No
Diamond rubber Diamond rubber ceramic
Plain rubber
Table 2. Lagging types
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Figure 1. Lagging test fixture
Figure 2. Lagging test fixture
Figure 3. Lagging test fixture in use
Figure 4. Lagging shear plate with bonded lagging
BULK HANDLING TODAY
May 2016
Figure 5. Classic friction behaviour
Figure 6. Pull force vs. displacement, 207 kPa, plain rubber lagging, clean and dry conditions
Figure 7. Pull force vs. displacement, 414 kPa, plain rubber lagging, clean and dry conditions
Figure 8. Close up of bottom cover damage
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Figure 9. Friction coefficient vs. pressure, plain rubber lagging, clean and dry conditions
Figure 10. Friction coefficient vs. pressure, full ceramic lagging, clean and dry conditions
Figure 11. Friction factor vs. pressure, clean and dry conditions
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BULK HANDLING TODAY
May 2016
Figure 12. Friction factor vs. pressure, wet conditions
Figure 13. Friction factor vs. pressure, muddy conditions
Figure 14. Pulley segment
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Figure 15. Available driving shear stress, clean and dry conditions
Figure 16. Available shear stress, wet conditions
Figure 17. Available shear stress, muddy conditions
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BULK HANDLING TODAY
May 2016
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Appendix A – Instron Test Setup
Figure 18. Isometric view
Figure 19. Side view
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BULK HANDLING TODAY
Figure 20. Front view
May 2016
Figure 22. Balanced shear stress
Shear Stress (N/mm 2)
Pressure (N/mm 2)
Figure 21. Accumulated length difference
Angle ÎŚ (deg) Pressure and Shear Stress as Functions of Rotation Angle for Belt. (Tension T 1 = T 2 = 450 N/mm. Roller diameter is 1 250mm, roller lagging thickeness 15mm, steel cable belt cover thickness 8mm) 2 Figure 23. Pressure and shear stress on a non-driven pulley
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Arcoplate is often specified to protect equipment, chutes and containers in applications involving extreme temperatures or abrasion.
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• Motorised cable reeling drums • Slipring assemblies (low & medium voltage) • Spring-driven cable reeling drums • Slipring assemblies (Accessories)
The smooth, dense metal alloy face and hard steel back plate resist gouging, erosion and extreme temperatures
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BULK HANDLING TODAY
May 2016
BULK HANDLING TODAY
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Solutions should meet the individual requirements of a company
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MARKET FORUM
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MARKET FORUM
www.flsmidth.com • +27 (0)10 210 5000
BULK HANDLING TODAY
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MARKET FORUM
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BULK HANDLING TODAY
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Lifting Solutions That Work.
Divisions of
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MARKET FORUM
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BULK HANDLING TODAY
May 2016
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BULK HANDLING TODAY
May 2016
Conveying Excellence with High-End Conveyor Belts Every conveyor belt, every climate zone and every topography calls for perfect conveyor belt technology. ContiTech provides knowledge, experience, a globally encompassing and competent network and a broad product range to give your conveyor belt applications a technological lead. More than 140 years of rubber expertise make us a strong partner, enabling our customers to benefit from the synergies within the Continental corporation. We implement innovative conveyor belt technology reliably, sustainably and safely from development to commissioning and after-sales service.
conveying excellence
+27 (0) 11 248 9300 www.contitech.co.za
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