Chaseling Company.pdf - Land Locomotion – Mechanical Vehicle ...

CHASELING McGIFFINMechanical Engineering ConsultantsCOMPANY PROFILEChaseling McGiffin Pty Ltd was established by Arthur Chaseling and Peter McGiffin in 1989. The firmspecialises in general mechanical design, specialised vehicle design, site supervision, design audits,testing services, finite-element analysis, failure analysis and accident investigations. A high proportionof projects undertaken are for mining and heavy industry, and often require innovative solutions todemanding problems. Work has been conducted throughout Australia and overseas.With a group of highly experienced and qualified Engineers, Chaseling McGiffin is able to deliverinnovative solutions to a wide range of mining, industrial, and environmental problems. The team ofprofessionals keeps abreast of the latest developments in software tools to assist in developingsolutions that meet our clients needs.Apart from providingdesigns, including detaileddrafting, troubleshooting,feasibility studies, designaudits, and testingservices, ChaselingMCGiffin Pty Ltd is also ina position to manufacturethrough its ADE ProductsWorkshop (see inset backpage)CHASELINGMcGIFFINMechanicalConsultantsEngineering2nd Floor,457 Upper Edward StreetSpring Hill,Brisbane, Q. 4004AustraliaP.O. Box 247,Spring Hill,Brisbane, Q. 4004,AustraliaPhone: (07) 3839 2045Fax: (07) 3832 3491Email: email@chaselingmcgiffin.com.auWeb: http://www.chaselingmcgiffin.com.auABN 62 010 981 192

220 TONNE COAL HAULERCLIENT: HASTINGS DEERINGThe optimum design of the coal hauler was achievedusing a finite element model to identify areas of highstress. The problems identified with existing coal haulerswere addressed in the design. Detailed drawings of thevehicle components were produced by linking the finiteelement model to the CAD drafting system. Over thirty ofthese machines have been constructed with the oldestexceeding 75,000 hours of operation to date.MAJOR PROJECTS160 TONNE COAL HAULERCLIENT: KADOR ENGINEERINGThis design was a scaled down version of the 220 tonne hauler insome areas, but because of the different dimensionalrequirements, other sections of the trailer were of a unique design.As for the larger trailer, the entire hauler was modelled using FiniteElement Analysis, and the fatigue life was assessed using thelatest fatigue design codes. Considerable use of castings wasmade in order to eliminate complex welded joints. Ten units havebeen constructed.BOOSTER DRIVECLIENT: BHP COALThe Booster drive system is designed to enhance thegradient-climbing and traction capability of a trailer-typecoal hauler by driving the trailer axle hydrostatically from apower pack mounted on the prime mover. Drive from thebooster system is available at low to medium speed, whereadditional power is usually required for ramps or in softground conditions, and is disabled when the prime moveris in higher than fifth gear. The drive is coupled to thewheels through one-way clutches, and free wheels whenoperating in the higher gears.10,000 TPH MOBILE SIZERCLIENT: BHP BillitonA design audit of a 10,000 TPH Mobile Sizer, designed andmanufactured by MMD in the UK, was undertaken for BHPBilliton. The sizer was installed at the Goonyella-Riverside Mine,to replace the bucket wheel excavator. The audit covered allstructural elements, including fatigue and maximum load cases,as well as issues with hydraulics and controls. ChaselingMcGiffin also weighed the 1,760 tonne machine afterfabrication.

MAJOR PROJECTS (continued)300 TONNE SWING WHEEL LOW LOADERThe swing-wheel low-loader is a newpatented concept allowing theadvantages of a single large-tyredaxle to be achieved in a relativelynarrow vehicle while preserving arear-loading capability. On each side,a wheel hub carrying dual tyres and anoil-cooled brake is mounted on aswing-arm. With the rear of the trailerraised on built-in jacks, bothswing-arms can be moved from theirtrailing positions behind and below the load platform to loading positions outboard of and above the load platform.The load platform, which has a built-in ramp, can then be lowered to the ground.EMT 6x6 MPVThe EMT 6x6 Multi-Purpose Vehicle has been designed byChaseling McGiffin to provide mine operators with a roughterrainvehicle with a high payload capability, which is capableof performing a number of roles on a mine site. The truck hasa payload capacity of 40 tonnes and is supported on highflotationtyres for operation in soft conditions. Oil-Cooledbrakes are provided for low maintenance, powerful stoppingand effective retard. Components have been selected fromthe Caterpillar range for ease of service and maintenance.HAULMAX 6x4 - 115t GVMChaseling McGiffin was commissioned to design theHaulmax 3770 Chassis Bowl Tipper. It is designedspecifically for high production long distance haulingwhere width restrictions apply. Delivering operators lowercosts per ton along with increased vehicle traction,braking, gradeability and operator safety. Componentshave been selected from the Caterpillar range for ease ofservice and maintenance.SPECIALISED ROAD TRAILERThe 20 tonne rear-tip road trailer was designed to maximisepayload volume to carry low density scrap metal. Thechassis was also designed to provide a torsionally stiff baseto improve stability during tipping in high winds.

105t REAR DUMP TRAILERMAJOR PROJECTS (continued)The complete design and detailing of a 105 tonne reardump trailer to be used for the transport of waste productsassociated with the steel making process. Theunconventional trailer layout is designed to achieve a lowload height and centre of gravity. Both the hopper andchassis were modelled using Finite Element Analysis tooptimise the strength while minimising the structural weight.CUSTOM REAR DUMP BODIES& TAILGATESIn order to maximise the productivity of existing rear dumpvehicles, body designs can be optimised for differentproducts. The bodies shown are a high volume body designedspecifically for coal and a heavy duty body designedspecifically for hard rock. In each case the body wasdesigned to carry the load at the rated GVM with the optimumload distribution between the tyres. Through the use of FiniteElement Analysis and our experience in fatigue-tolerantdesign, bodies can be designed that have the attributes ofboth a long service life and a low tare weight. Further weightsavings are possible if high strength formable steels areutilised in place of extensive wear packages.DOZER LOW LOADERDozer low loader is designed specifically for the transport ofdozers, notably dozers of the size range of the Caterpillar D10and D11 range. It has a load rating of 110 tonnes, and isavailable in two forms; as shown with a tandem-wheelarrangement mounted on rocking-beam equalisers, or with asingle-axle carrying Caterpillar truck hubs with dual tyres.This model has oil-cooled multi-plate disc brakes with springappliedemergency/parking brake system and the option ofrecirculating oil cooling for continuous retardation on grades.MOBILE MINERCLIENT: PASMINCOAudit of design, and provision of assistance in design ofunderground mobile mining machine, involving close liaisonwith design staff at The Robbins Company in Seattle, USA,and Pasminco personnel, with respect to structure, gearing,hydraulics and elements of the machine control. Involvementcontinued throughout machine manufacture in Australia andinitial commissioning at Broken Hill Mine.

AREAS OF EXPERTISEMechanical DesignThe range of design work undertaken is wide, varying from finemechanical devices, to large mining structures such asdraglines, weighing several thousand tonnes. The firm is veryexperienced in design for high fatigue environments where useof castings may be necessary to avoid complex weldedfabrications, as well as being experienced in design of itemslikely to be subjected to high overloads.Extensive use is made of 3D CAD modeling throughout thedesign process. A complete virtual model is produced andaspects such as clearances and locii of mechanisms can betested. In most cases, the 2D workshop drawings aregenerated from 3D solid models, which ensures thatcomponents will correctly fit together to form the assembly.Design Audits andDesign/Construction SpecificationsThe firm is experienced in the undertaking of Design Audits,either in a close co-operative relationship with design firmsduring the course of design, or in a more independentapproach as required by the client. The firm also developsdetailed specifications for use in the construction of largeitems of machinery such as draglines.Testing ServicesChaseling McGiffin has the capability to undertake straingaugingas well as vibration measurements and to provide athorough analysis of the data, involving such techniques as"Rainflow" analysis to assess fatigue loading, spectralanalysis of vibrations, online reduction of strain gauge rosettedata to principal stresses and strains.Finite Element AnalysisWith the latest computer software, Chaseling McGiffin can rapidly undertake finite element analysis of structures ormachinery to analyse stress or thermal problems, including non-linear analysis. Specialised Finite Element CAD is usedto develop the model, but if CAD drawings are supplied, these can be converted to a form compatible with the FEA CADsystem. Both static and dynamic analysis can be undertaken, with the latter being used to identify potential troublesomevibration modes, and to assess the effect of structural modifications on vibration levelsFailure AnalysisChaseling McGiffin can carry out a complete analysis of the cause of failure of most equipment. The firm has experiencewith a wide range of machines, including vehicles, aircraft, opencut and underground mining machines, materials handlingequipment, and manufacturing machinery. Types of failure examined include structural overload or fatigue, failure withgearing, failure of drives or hydraulics, or problems involving electro-mechanical systems. Fatigue analysis may includethe use of "Fracture Mechanics" to assess the potential life of items with known defects present.Product DevelopmentOften truly revolutionary concepts fail in the market place because of a lack of professional engineering analysis anddesign. Chaseling McGiffin has considerable experience in assisting clients in the development of innovative products.This assistance includes various forms of analysis and modelling as well as material selection and manufacturing processadvice. Computer simulation of electro-mechanical and control systems is part of our armoury.Accident InvestigationChaseling McGiffin can offer advice on the cause of various accidents including such as industrial accidents and vehiclecollisions. A report based on expert analysis will be prepared and if necessary expert testimony can be provided.

CONTACT DETAILSDIRECTORSArthur ChaselingB.E.(Hons), M.Eng.Sc., M.I.E.Aust., R.P.E.Q., C.P.Eng.Peter McGiffinB.E.(Hons), M.Eng.Sc., M.I.E.Aust., R.P.E.Q., C.P.Eng.Mark PetrieB.E.(Hons), M.Eng.Sc., MBA, M.I.E.Aust., R.P.E.Q.SENIOR STAFFIan VallanceCert.Mech.Eng.Paul HardingB.Sc.(Hons), Ph.D., Affil.I.E.Aust.Jason LoweB.E.(Hons)Turnkey SolutionsADE Products Pty Ltd is a jointventure company betweenChaseling McGiffin Pty Ltd andAustralian Diversified EngineeringPty Ltd to market products formining and heavy industry.ADE Products has soldequipment nationally and intoparts of South East Asia.Through its association with ADEProducts, Chaseling McGiffin canoffer turnkey solutions, completingprojects from initial specificationthrough fabrication to on-sitecommissioning.email@adeproducts.com.auwww.adeproducts.com.auRowan NicholasB.E.Tony ElliottB.E. (Hons)Any enquiries should be directed to :Chaseling McGiffin Pty Ltd2 nd Floor P.O. Box 247457 Upper Edward St. Spring HillSpring Hill Brisbane QLD 4004Brisbane QLD 4004 AustraliaAustraliaTelephone: (07) 3839 2045Fax: (07) 3832 3491Email: email@chaselingmcgiffin.com.auWeb: www.chaselingmcgiffin.com.au