Slips and falls occur most often during maintenance, repair, or cleanup, and when mounting and dismounting the machine. High capital outlay for dragline requires efficient operation to obtain low cost of ob removal. Such overloads arise from poor manual operation of the machine, often due to driver fatigue over long shifts. The influence of stripping bench height performance of draglines in. Construction planning, equipment, chapter draglines and. Development of dragline excavation model for operation. Dragline operators control dragline excavators at construction sites. It will provide the platform for future research to commence by giving a presentation of current practices specific to the operation of a dragline. The paper presents a good amount of data for 4draglines operating in one of the major. Dragline definition of dragline by the free dictionary. Pdf of dragline free ebooks pdf, doc, ppt, pps, xls and etc.
A tradeoff exists as to whether to remain digging at a particular. Draglines and clamshells ence 420 assakkaf slide no. The draglines repositioning is a large component of its operation. Horizontal tandem operation when leading and lagging dragline is deployed 2496 having annual production of 3. Cybermine dragline simulators are delivered with a highly realistic, operating, 3d simulated mine world, complete with overburden, spoils and artificially intelligent simulated mining equipment such as bulldozers, shovels, diggers and light vehicles to support the. 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. This video is a starting point for new trainees to learn how draglines work and how they are operated.
Proper placement, inspection and protection of power cable. A dragline excavator is a piece of heavy equipment used in civil engineering and surface mining. Access, interpret and apply compliance documentation relevant to conducting of dragline operations. Dragline excavator 3d models for download turbosquid. To investigate the effect of different parameters on the performance of dragline in horizontal and vertical tandem operation which are follows as i. 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 primary objective of this study was to determine levels of noise and ground vibration as a function of distance from draglines operating under various meteorological conditions. A thesis submitted for the degree of master of philosophy. We have produced a series of videos covering many different aspects of dragline operations including dig methods, principles and practices, dozer techniques and advanced bucket loading techniques. The present disclosure relates to a work machine, in particular to a cableoperated excavator, for dragline bucket operation, comprising a dragline bucket taken up by a hoist rope, wherein the attachment can be retracted by means of at least one dragline for carrying out the dragging movement and a dragline guide for guiding the dragline is arranged at the work machine, wherein the dragline. In the case study mine, speed factor of dragline operation computed as 0.
Most crawler cranes, with an added winch drum on the front, can act as a dragline. Construction planning, equipment, chapter draglines. Development of dragline excavation model for operation planning haoquan liu, michael kearney, kevin austin the university of queensland, australia h. A thesis submitted for the degree of master of philosophy at. Diploma or equivalent and a valid drivers license required. Dragline digging methods in australian strip mines a survey. The dragline can dig through loose to medium compacted soil. Discrimination of cycle time components one of the main difficulties in recording a draglines cycle time is discriminating successive components from each other. Improving dragline productivity and increasing reliability. 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. Operating delay process delay a dragline stoppage associated with the operational.
A special interlock control syste m is an option available. Dragline in tandemvertical or horizontal dragline operation in vertical tandem may be considered in the following conditions. Accidents relating to dragline operation most often result from slips and falls. Accidents relating to dragline operation most often result from slips and falls, being caught in or struck by moving parts, and standing or walking near the machine while it is in operation. It can swing in 360 degrees, after dragging the loose materialbelow its level. The nomenclature of the dragline usually called as 2499which means 24 cum. The biggest advantage of the dragline over other machines is its long reach for both digging and dumping. Such overloads arise from poor manual operation of the machine, often due to. Many different sizes of draglines may be used, depending on the type of operation and application. A dragline cycle is the amount of time the dragline takes to fill drag, swing, dump and return to the dig.
Many draglines built since the 1970s are still original in configuration and utilize original component technology. Cross marine projects provides a wide range of mechanical and hydraulic dredging, dragline, jetting and trenching services in some of the most difficult and ecologically sensitive marine environments. Available in any file format including fbx, obj, max, 3ds, c4d. Noise and ground vibration monitoring related to dragline. There are separate drums on the basic unit for each of these cables so that they may be coordinated into a smooth operation. Operation of draglinethe dragline has a long boom with a bucket capacity rangingfrom 15 to 50 cum. For instance, swing to and dumping appear as two successive parts of a single operation as do swing back and repositioning. Msha instruction guide series ig 43 onthejob training. 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. View thousands of crane specifications on freecranespecs. If you use a dragline for craning operations, the operator and equipment must meet the standards cited above. Cross marine projects provides a wide range of mechanical and hydraulic dredging, dragline, jetting and trenching services in some of the most difficult and ecologically sensitive marine environments with years of dredging experience, cross marine will save your project thousands of dollars by matching the right dredging equipment to your geological. Generally, dragline productions can be broken down into cycles.
In addition to learning operation and maintenance procedures, mining dragline operators must complete federally mandated safety training, which is typically provided by employers. Inspection, maintenance and house cleaning and some operation of dragline. The tandem operation of draglines is in use in some of the major indian opencast coalmines owing to the favourable geomining conditions, technical suitability, efficiency and economic viability. Excluding the infrequent walking, a dragline spends its major operational time.
Onsite andor classroom training for dragline operators and mine operation supervisors. The operators manual provided with the machine, and the mines operating procedures, should also be. Excluding the infrequent walking, a dragline spends its major operational time by. Cross marine projects dredge and dragline operations. 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. A simulation model for selecting suitable digging method for a dragline operation, in 25th international symposium on the application of.
There is no comprehensive study evaluating the various digging methods currently in use. For instance, swing to and dumping appear as two successive parts of a. Discrimination of cycle time components one of the main difficulties in recording a dragline s cycle time is discriminating successive components from each other. Cybermine dragline simulators thoroughtec simulation. Since deployment and operation of a dragline in different modes affect its productivity, it will be necessary to study the effects on. Obtain, interpret and clarifyconfirm work requirements in the form of shift briefings, handover details or work orders before proceeding. Use filters to find rigged, animated, lowpoly or free 3d models. Us20150184357a1 work machine for dragline bucket operation. 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. This eliminates the need for hauling units, thus reducing the cost of handling the material. The lowstress way to find your next dragline operator job opportunity is on simplyhired. Development of dragline excavation model for operation planning figure 1. Mar, 2012 operation of draglinethe dragline has a long boom with a bucket capacity rangingfrom 15 to 50 cum.
Operation of a dragline the excavating cycle is started by swinging the empty bucket to the digging position, while at the same time slacking off the dragand the hoist lines. 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 is a versatile attachment capable of a wide range of operations at and belowground level. Draglines are used in surface metal and nonmetal mining for overburden and ore removal, and for reclamation. Access, interpret and apply geological and survey data required to. This research project dragline maintenance engineering explores the maintenance strategies for large walking draglines over the past 30 years in the australian coal industry. Dragline operators must complete a manufactureroffered safety training program containing, at minimum, the requirements for heavy equipment safety training described in 321 fw 1. Noise and ground vibration monitoring related to dragline operations in phosphate mining. It swings normally between 90 to 120 degrees and side castthe material in to the decoaled area. The 5 calibers to claim the most powerful handgun in the world title reupload duration. Pdf productivity analysis of draglines operating in horizontal and. Access, interpret and apply compliance documentation relevant to conducting of dragline operations 1.
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. The interlock control system for dragline operations ensures powered lowering with drag winch, while lifting of the bucket with the hoist winch. The dragline boom protrudes from the front of the dragline house. Pdf the tandem operation of draglines is in use in some of the major indian opencast. Pdf dragline maintenance engineering semantic scholar. 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. 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. An additional option is the redundant control system, which allows restricted operation of the machine in the event of a failure on the electronic. In this light, the present paper is an endeavor to analyze availability and utilization of dragline operations.
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