In order to improve the efficiency of a dragline operation it is necessary to have a thorough understanding of the characteristics of the digging method and the sequencing of the excavation operations. The cost of one new similar dragline is approximately 30 million euros the total cost of. The dragline is a versatile attachment capable of a wide range of operations at and belowground level. Access, interpret and apply compliance documentation relevant to conducting of dragline operations 1. It will provide the platform for future research to commence by giving a presentation of current practices specific to the operation of a dragline. Earlier studies by nath and rai4 also reported low a and u values for some draglines in the opencast projects of india. Obtain, interpret and clarifyconfirm work requirements in the form of shift briefings, handover details or work orders before proceeding. The lowstress way to find your next dragline operator job opportunity is on simplyhired.
This relates to the draglines walking sequence, that is, to where the dragline should stand, dig and dump to, and to when and where it moves. Dragline basket and claim shell bucket are used to scoop oil laden debris from log boom on the san juan river, 101972. High capital outlay for dragline requires efficient operation to obtain low cost of ob removal. History of dragline operations in west virginia history of dragline operations in west virginia joe hughes of northeast mining company operated a 4 yard page near beaver creek in tucker county in 1963 during late 1960s and 1970s several operations including. The nomenclature of the dragline usually called as 2499which means 24 cum. To investigate the effect of different parameters on the performance of dragline in horizontal and vertical tandem operation which are follows as i. Planning dragline positioning sequence with a search.
A variation of the same basic machine is the front shovel excavator also used in civil engineering and mining projects. Pdf of dragline free ebooks pdf, doc, ppt, pps, xls and etc. Inspection, maintenance, house cleaning and some operation of dragline. Proper placement, inspection and protection of power cable. Retrain an operator if a new attachment is added to the forklift.
Employing a spare dragline operator and reducing the variability in dragline operator performance. We show that the proposed a algorithm is able to pro uce the optimal positioning sequences in a reasonable amount of computation time, allowing it to be applied in realtime decision support for the dragline operators. Liebherr hs, data sheets and catalogues, english, 305 kb. Methods for evaluating effect of operators on drag line energy. The first dragline of any kind to be successfully equipped with ac igbt drive systems, we developed this superior technology for the sole purpose of making your workday more productive, predictable, and most importantly, safe. The dragline can dig through loose to medium compacted soil. Operation of a dragline digging is accomplished by pulling the bucket toward the machine while regulating the digging depth by means of the tension maintained in the hoist line.
Since deployment and operation of a dragline in different modes affect its productivity, it will be necessary to study the effects on. By this study its states calculation of annual output, maintenance and operation cost. The dragline boom protrudes from the front of the dragline house. This is to certify that the thesis entitled dragline performance study in indian coal mines submitted by sri ankit kumar in partial.
Construction planning, equipment, chapter draglines and. Basic crane operation clamshel operation dragline operation front end attachments transporting components location and circuits maintenance guide maintenance services under various conditions storage specification part number of hitachi machinery. The effectiveness of their operation is highly dependent on decisions made by their operators, including the sequence of positions at which they operate and the bulk material movement what to dig and where. The influence of cut width on the performance of draglines in horizontal and vertical tandem operation by varying the cut width and keeping all the parameters constant. Offering the highest levels of overburden removal productivity at the lowest total cost per tonne ton, the 8750 is the flagship model of the cat dragline product line. Access, interpret and apply compliance documentation relevant to conducting of dragline operations. Dragline digging methods in australian strip mines a survey.
Operation of draglinethe dragline has a long boom with a bucket capacity rangingfrom 15 to 50 cum. Msha coal mine fatal accident investigation report. This eliminates the need for hauling units, thus reducing the cost of handling the material. Evaluating center pivot drag line drip irrigation systems. Access, interpret and apply geological and survey data required to. Dragline operators control dragline excavators at construction sites. Introduction draglines are used to excavate material and to load it into hauling units, such as trucks or tractorpulled wagons, or to deposit it in levees, dams, and spoil banks near the pits from which it is excavated. Considerations some technical and business dragline or. The draglines repositioning is a large component of its operation. Hydraulic crawler cranes hs series duty cycle dragline operation c dragline operation type engine winches boom bucket radius deepness capacity c d 3 3 hs 825 hd 180270 kw 2x 16 t 14 20 m 2. When using a grid file surface, the program will prompt for a station interval and will create ground crosssections at the specified offset left and right of the centerline at this interval before applying the dragline steps. Strategic planning for dragline excavation sequencing uq espace. Small draglines are rarely used and no tandem dragline operation currently exists in australia. Dragline in tandemvertical or horizontal dragline operation in vertical tandem may be considered in the following conditions.
Artificial intelligence, process optimization, dragline operation planning, decision making. In the case study mine, speed factor of dragline operation computed as 0. Mar, 2012 operation of draglinethe dragline has a long boom with a bucket capacity rangingfrom 15 to 50 cum. Available in any file format including fbx, obj, max, 3ds, c4d. Inspection, maintenance and house cleaning and some operation of dragline.
Apply to equipment operator, operator, excavator operator and more. Various operations of the bucket for the desired purposes are controlled by maneuvering of the hoist and drag ropes. Process dragline sequence works by repeating the 2d crosssection steps for each section along the centerline. The cost of one new similar dragline is approximately 30 million. The common dc link allows the motoring and regenerating drives to exchange energy. Draglines and clamshells ence 420 assakkaf slide no. The outcomes of this study will be used to educate engineers in the field of dragline maintenance engineering. A thesis submitted for the degree of master of philosophy. Sketch of site pdf file photo of site pdf file appendix a. Dragline excavators are heavy equipment used in civil engineering and surface mining projects. Dd is an automated dragline and dozer section design tool. Digging is accomplished by pulling the bucket towards the mc while regulating the digging depth by means of tension maintained in the hoist line.
Dragline operator job description, duties and jobs part 1. There were three methods used by the workers at this mine to contact the dragline operator when the dragline was in operation. Most crawler cranes, with an added winch drum on the front, can act as a dragline. Use our career test report to get your career on track and keep it there. This includes their design, speed of operation, gear reduction ratio, nature of load, operating temperatures, input power and mechanical effects. The biggest advantage of the dragline over other machines is its long reach for both digging and dumping. Generally, dragline productions can be broken down into cycles. Such overloads arise from poor manual operation of the machine, often due to driver fatigue over long shifts.
Performance assessment of draglines in opencast mines. Department of mining engineering for allowing me to carry on the present topic dragline performance study in indian coal mines and later on for his inspiring guidance, constructive criticism and valuable suggestions throughout this project work. There is no comprehensive study evaluating the various digging methods currently in use. In case, deployment of draglines in horizontal tandem and two shovels for extraction of coal is a necessity, width of the dragline cut has to be kept more for smooth and safe operation. To help maximize your investment in a cat dragline, we provide onsite operator training assessments, onsite electrical and mechanical maintenance training, and a variety of computerbased training options. The first subproblem considers that given a sequence of prescribed dragline positions, what.
The influence of stripping bench height performance of draglines in. Pdf the tandem operation of draglines is in use in some of the major indian opencast coalmines owing to the favourable geomining conditions. Some general t opic guidelines offered by unsw included. Contentsshow history the earliest machines were steam powered and were the first mechanical excavators used by man, in the 1800s. It swings normally between 90 to 120 degrees and side castthe material in to the decoaled area. There is no comprehensive study evaluating the various digging methods currently in use by australian open cut coal mines.
Regardless of whether you decide to receive these marketing communications, caterpillar will continue to send servicetransactional messages, including those that have. A dragline cycle is the amount of time the dragline takes to fill drag, swing, dump and return to the dig. It then takes this design template and applies it to plan view in 3d, extruding it up and down the pit using a centerline file cl. It can swing in 360 degrees, after dragging the loose materialbelow its level. The dragline is designed to excavate below the level of. Such overloads arise from poor manual operation of the machine, often due to. Igbt technology insulated gate bipolar transistors igbts. With better maintenance it gives better productivity, wear and tear. Make sure all operators are trained in the fork and attachment adaptation, operation, and use limitations. Dragline excavator 3d models for download, files in 3ds, max, c4d, maya, blend, obj, fbx with low poly, animated, rigged, game, and vr options. For more information, please refer to the operation and maintenance manual or any other applicable manuals and instructions for this product. To improve performance of dragline following suggestions may be adopted. Dragline drives and control system retrofit abb gives new life to a valuable 35 year old machine service reference case description the positive result of the revamp showed how to proceed with worn out draglines. Diploma or equivalent and a valid drivers license required.
Listed below are the persons furnishing information andor present during the. Our application engineers work collaboratively with existing and potential dragline customers, considering factors such as digging environment, mine life, mine plan and annual production targets, among others, to determine the proper dragline configuration for each customers mine site. Development of dragline excavation model for operation planning. A tradeoff exists as to whether to remain digging at a particular. Use filters to find rigged, animated, lowpoly or free 3d models. Onsite andor classroom training for dragline operators and mine operation supervisors. During operation, inverters inv take power from the dc link to drive the dragline motors. Maintenance and performance analysis of draglines used in. Out of nine dragline units operating at various surface mines in turkey, six were visited to look into their characteristics and mode of operation table 1. During regenerative braking, the inverters send power from the motors back to the dc link. Pdf productivity analysis of draglines operating in horizontal and. Gurobi optimization, gurobi optimizer reference manual, 2015. Dragline operation modelling and task assignment based on. They are experts in controlling the equipment and coordinating activities with other construction workers on the site using hand and audio signals, in order to ensure safety and keep the project moving forward at an efficient pace.
Introduction this paper focuses on the application of truck shovel systems to augment conventional dragline operations. Table 31 operating specifications of a bucyruserie 1570w dragline. Use our job search tool to sort through over 2 million real jobs. Improving dragline productivity and increasing reliability. A dragline excavator is a piece of heavy equipment used in civil engineering and surface mining. Many australian dragline operations are using innovative digging methods to cope with these more difficult geological conditions and to increase dragline capabilities such as maximum reac. A simulation model for selecting suitable digging method for a dragline operation, in 25th international symposium on the application of. Development of dragline excavation model for operation planning figure 1.
This command applies 2d crosssection dragline steps along a centerline to create a 3d model. Draglines by fabil t mt15ctm003 kone venkateshmt15ctm009 2. Service reference case description dragline drives and. Jun 24, 20 pdf of dragline free ebooks pdf, doc, ppt, pps, xls and etc. Draglines are among the largest earthmoving machines in surface mining, where they are used to remove the waste material overburden sitting above a target mineral or coal deposit. It is used for range diagram and dozer push design and optimization. The a and u values for large machines like dragline should normally lie in the range of 0. Dragline excavator 3d models for download turbosquid. A thesis submitted for the degree of master of philosophy at. Pdf productivity analysis of draglines operating in. Ability to work outside in adverse weather conditions. Cat draglines are designed to operate at high availability with the lowest environmental impact, providing an average operating life of 40 years.
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