A joint photographic experts group jpeg image is a compressed digital copy of a photograph or a scanned image. Most crawler cranes, with an added winch drum on the front, can act as a dragline. This dropdown menu sets the dragline to use for the current pass. Excavating and loading machine and dragline operator 53. The dragline s operating manual states the travel locks should be set with the machine stopped. 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. At each dragline position, the dragline is only able to dig the material within its operating radius.
Liebherr hs data sheets and catalogues english 305 kb. Output includes both drawing the sections in cad and printing out reports as pdf files, where each step is a separate page. Apply to operator, equipment operator, assistant operator and more. K availabilitycumutilization factor s swell factor f fill factor m machine travel and positioning factor step 2.
Combined with the consideration of dragline digging and dumping constraints, we are able to use these models for tactical planning of the dragline operations. The reason for a pdf file not to open on a computer can either be a problem with the pdf file itself, an issue with password protection or noncompliance w the reason for a pdf file not to open on a computer can either be a problem with the. Operating safety for draglines, dozer operators and other. Pdf search engine allows you to find free pdf books and files and download them to your computer. 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. At a given dragline position k, the digging action is modelled as the decreased heights of elements inside the digging area. They strip the overburden material by dragging their buckets suspended from the boom tip towards the main frame. By michelle rae uy 24 january 2020 knowing how to combine pdf files isnt reserved. By reproducing dragline methods across a range of operational parameters, and incorporating blasting, waste stripping and other mining equipment into the analysis, dragsim gives users an accurate picture of dragline operations for a bestpractice approach.
This relates to the dragline s walking sequence, that is, to where the dragline should stand, dig and dump to, and to when and where it moves. The dragline is a versatile attachment capable of a wide range of operations at and belowground level. Us20040055185a1 dragline excavating machine with direct. Almost all walking draglines take a step of approx. In a traditional dragline operation bucket payload is directly affected by the bucket carry angle. A 20% swell has been set, and it will be stored to a new step file as shown with sequence number one. Better preventive maintenance schedule to reduce the breakdown time and breakdown costs. The paper presents a good amount of data for 4 draglines.
Dragline operation msha instruction guide series ig 43 onthe. Dragline casting layouts dragline stripping operation the. Inverter during operation, inverters inv take power from the dc link to drive the dragline motors. Quarry personnel reported that the dragline was purchased about 1. The design of strip panels, equipped with a specific unit with one operators room on the desired side or with two on both sides and the managements strategy in coal loading operation, largely affects the. No matter what brand or model or vintage of dragline you happen to use in your mine operation, joy global. The design of strip panels, equipped with a specific unit with one operators room on the desired side or with two on both sides and the managements strategy in coal loading operation, largely affects the frequency and the length of long. Pdf on nov 21, 2018, metin ozdogan published normal bench digging main cut parameters of a walking dragline with. Methods for evaluating effect of operators on drag line energy. Dragline in tandemvertical or horizontal dragline operation in vertical tandem may be considered in the following conditions.
Read on to find out just how to combine multiple pdf files on macos and windows 10. Select multiple pdf files and merge them in seconds. Draglines may be addededited via the define dragline equipment command surface mining module surface pulldown menu. Methods of mining include side cast, dozer push, extended bench and spoil side mining. The following window will appear, and needs to have at least the first three files set. The paper presents a good amount of data for 4 draglines operating in one of the major. Dragline stripping operation the stripping cycle of dragline begins with the dragline cutting a trench, referred to as the key cut, along the newly formed highwall. Thick seams with more than 25m thickness are unsuitable. Indot reserves the right to require the immediate suspension of pumping operations and removal of the dragline if conditions warrant. Evaluation of operating methods analyse the various segments of a cycle to identify the best. The pdf format allows you to create documents in countless applications and share them with others for viewing. Strategic planning for dragline excavation sequencing uq espace.
Systems simulation for dragline selection in open cast mines. Searching for a specific type of document on the internet is sometimes like looking for a needle in a haystack. The distance from the previous key cut position to the new position is referred to as the digout length. For gearless draglines, siemens custom designs one synchronous ring motor for the hoist and drag motions. 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.
Pdf productivity analysis of draglines operating in. Process dragline sequence if it has not already been done, use the routine polyline to centerline file to create the. During regenerative braking, the inverters send power from the motors back to the dc link. Reducing dragline cycle time in most operations the bucket is full. Virtual prototype simulation results the motion of the dragline mechanism is visualized by plotting successive linkage positions on graphic displays in the y y. When selected, a list of predefined draglines will be shown. Adobe designed the portable document format, or pdf, to be a document platform viewable on virtually any modern operating system. A dragline operators main responsibility is to manage the levers that control the dragline excavator. Dragline construction management 2180611 gujarat technological university chandkheda, ahmedabad sarvajanik college of engineering. These units are designed to be dismantled and transported over the road on flatbed trailers. Some or all of the files available on this page are pdf. Exam i surface mining methods and key elements of surface mines 10% exam ii drilling and blasting 25 % exam iii shovelloader trucks system 25 % exam iv crushing 5 % exam v dragline operations 5 %. Safety chart for the identification of stability of internal. When the carry angle is steep, material rills off the back.
A dragline excavating machine includes a gearless direct drive ac drive motor for driving each of the hoist and the drag drums in the system. The structural loading on dragline frontend depends mainly on the rated suspended load, and the accelerations created by hoist and swing motors. Where steeply dipping orebodies are encountered, the modified method is most often applied as shown in figure 2. Development of dragline excavation model for operation. Once youve done it, youll be able to easily send the logos you create to clients, make them available for download, or attach them to emails in a fo. Could a dozer move across under the dragline boom with the bucket empty and suspended in the air, but the boom. The rapidly expanding mining industry in make big additions to its output. You can change the default program for pdf files to open it in a program thats more suitable and featurerich, such as acrobat reader dc or acrobat dc. Constant supervision, good overburden preparation, and preventive maintenance of dragline and selecting proper bench height of overburden for suitably selected machine should ensure efficient and effective operation of a dragline.
A generally acceptable carry angle between 15 degrees. Limit dragline oilers time working in house switch out oiler with dragline operator or groundsman dozer operator perform maintenance, cleaning, etc. A dragline excavator is a piece of heavy equipment used in civil engineering and surface mining. The dragline controls provided for travel or swing with a single lever. Before deploying draglines in mines, various factors have to be considered for selection of suitable. 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.
Dragline consists of drag rope, large bucket, boom, hoist rope and driving motors. How to shrink a pdf file that is too large techwalla. Microsoft edge is the default program for opening pdf files on windows 10. You use controls to lower the bucket down to the ground and then drag it along in a straight path to gather materials. After the dragline warmed up, harry climbed into the cab and moved the machine to the bank of the pit. They are built with customer inspired innovations that help optimize rugged, reliable and safe performance.
A tradeoff exists as to whether to remain digging at a particular. The very first draglines were developed by frank w. It will also create an output section file for later manipulation. In this research study, it is aimed to develop a reliabilitybased maintenance optimization models for two walking. The dragline must be immediately removed if it causes any hydraulic capacity problems. This paper discusses the stability analysis of internal dragline dump in dry condition using monte carlo simulation. This value displays the horizontal reach of the selected dragline. Before desiwng a placer mining operation, the evaluator will need information concerning the deposit under evaluation. Jun 24, 20 pdf of dragline free ebooks pdf, doc, ppt, pps, xls and etc. Operating safety for draglines, dozer operators and other groundmen 1. It has the ability to excavate very deep down the earth.
This will be a simple box cut for the first sequence. A sensitivity analysis was performed to identify the most critical geometrical parameterscoalrib height, slope angle and height. Quality assurance documents detailing inspection test results of components inspected. You can zoom in and out on the page using the magnifying glasses buttons, undo changes, reset the.
This means it can be viewed across multiple devices, regardless of the underlying operating system. These might include buildings, employee housing, and settling pond construction. A pdf file is a portable document format file, developed by adobe systems. Dragline photos and premium high res pictures getty images. Draglines free download as powerpoint presentation. For improving the performance of draglines by decreasing the cycle time, ideal time and upgrade the maintenance strategies. The main function of a dragline is to move the overburden topsoil from above a coal seam to a spoil pile. Pdf is a hugely popular format for documents simply because it is independent of the hardware or application used to create that file.
Development of dragline excavation model for operation planning. Crossings must be as close as practical to perpendicular to the roadway corridor. Step two will be the coal removal, and step three will be the next cut and spoil placement. Pdf of dragline free ebooks pdf, doc, ppt, pps, xls and etc. This article explains what pdfs are, how to open one, all the different ways.
To combine pdf files into a single pdf document is easier than it looks. This lever could be placed in either the swing mode or the travel mode but not at the. Cat draglines are a primary excavating tool in many surface mining operations worldwide. A critical case study on draglines operating in vertical tandem in. Dragline is the largest equipment ever built on this planet.
In this sense, effective maintenance policies are essential to improve longevity of dragline component and sustainability of operations. Making a pdf file of a logo is surprisingly easy and is essential for most web designers. The dump operation of the dragline consists of positioning the bucket above the material to be. The weather at the time of the accident was overcast with an air temperature of. Pdf file or convert a pdf file to docx, jpg, or other file format.
Maintenance and performance analysis of draglines used in mines. Equipment use will vary over the course of operations in pit 09. This is a quick and easy way to find parameters such as pit width, or to size a dragline to fit the mining. Operating condition, mine design and planning, equipment characteristics and operators skill are factors that control dragline productivity, energy consumption. While the maximum payload lifted by the dragline does not increase, the average payload lifts by 8.
The optimisation of the digging sequence of a dragline uq espace. Avoiding noise overexposure at underground and surface coal. District deputy commissioners permit memorandum 2002. Overburden dump is an integral part of opencast coal mining, and its stability is essential for the safe and economic extraction of the material.
The draglines repositioning is a large component of its operation. The dragline can dig through loose to medium compacted soil. Employing a spare dragline operator and reducing the variability in dragline operator performance. Word drag is used because it has the ability to drag material at far distance from the machine. Among them, the bucket capacity and operation radius are relatively basic ones. Luckily, there are lots of free and paid tools that can compress a pdf file in just a few easy steps.
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 selection of stripping dragline is a complicated problem. This policys intent is to allow for permissible means to consent to this. Once the mining stage is reached, equipment used on a routine basis will include. Youre also responsible for emptying the bucket of its materials in a dump operation. The dragline s repositioning is a large component of its operation. The gearless ac motor is driven using a digital system which receives ac power from the utility system rectifies the power using active front end circuits, and converts the resultant dc to a frequency controlled ac using an inverter circuit. Draglines perform operations singlehandedly without the need of a haulage system. A thesis submitted for the degree of master of philosophy at. If your pdf reader is displaying an error instead of opening a pdf file, chances are that the file is c. Could a dozer move across, under the dragline boom while the dragline has a bucket of material load suspended, either moving it or holding it stationary. Become familiar with digging plans, machine capabilities and limitations, and with efficient and safe digging procedures in a given application. Maintenance and performance analysis of draglines used in.
You can now create an account to manage your preferences and personalize your experience on. An oversized pdf file can be hard to send through email and may not upload onto certain file managers. Health and safety considerations in surface mining exams and homework. To assist this, the standard blasting practices are to cast blast an entire strip with several subsequent coal blasts as the coal is.
Msha safety pro in a box instructor guide ig 43 on. The jsa format facilitates uniform basic training in safe job procedures, while requiring. The key cut is made to maintain the panel width and uniform highwall. Pom 2101, agricultural dragline use of cross structures on state rightofway page 2 of 6 the department recognizes the burdens on farming operations, and the necessity to effectively distribute fertilizer. While drawing balancing diagram on graph paper, the following procedure may be adopted. When the bucket is carried at a flat angle, material falls off the front of the load. Keeping the importance of popularly used vertical tandem operation of draglines, the present study has been undertaken in a large indian opencast coal mine in. The digging action is denoted by vector ug k u g 1 ku g jsgj, where s g is the set of indices of elements in the digging area. Mine x is a 247 strip mine operation in which the overburden is removed primarily using a dragline. In this light, the present paper is an endeavor to analyze availability and utilization of dragline operations. Exam i surface mining methods and key elements of surface mines 10% exam ii drilling and blasting 25 % exam iii shovelloader trucks system 25 % exam iv crushing 5 % exam v dragline. Accidents relating to dragline operation most often result from slips and falls, being caught. Associate pdf files to always open in reader or acrobat on. Initial estimations of dragline operation parameters availability, dragline.
Computation of coal exposure the coal exposed by the draglines working in tandem operation was estimated by using the generalized equation as per the balancing diagram concept. Calculate annual production of each dragline pa bc x k x s x f x m x 3600 x 8760 m3 where, pa annual production by dragline m3 b bucket capacity m3 c average cycle time sec. Automation it working with bma to optimise their udd dragline. Muck pile shaping for draglines and dozers at surface. Observe hand signals, grade stakes, or other markings when operating machines so that work can be performed to specifications. Avoiding noise overexposure at underground and surface. Theyre highly productive and offer the lowest material cost per tonne in the industry. The results are used for the structural endurance evaluation.
Most electronic documents such as software manuals, hardware manuals and ebooks come in the pdf portable document format file format. Jun, 2020 victim attempted to draw in the dragline bucket, it caused the dragline to be pulled into the water. 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. The biggest advantage of the dragline over other machines is its long reach for both digging and dumping. 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.
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