On completing the key cut this dragline diagram. excavated the first cut (next to key cut). After 2. To compute some important productivity param- excavating these two cuts, the leading dragline again eters, through field …
dragline in order to get maximum overburden accommodation in de-coaled area with least rehandling for achieving high rate of coal exposure and ensuring slope stability (Rai, 1997). The balancing diagram assists in determining the coal exposed by a dragline, the percentage of overburden, rehandling and the volume of
This study involves the evaluation of the reliability of a draglines system using a Bayesian network (BN) model mapped from a fault tree. Based on the BN …
A graphical dragline range diagram program for two seams has been developed which allows analysis of six alternative strip pit designs. When geologic and geometric …
Download scientific diagram | Dragline diagram and coordinate frames. from publication: A Four Degree of Freedom Dynamic Dragline Model for Predicting Duty and Optimising Bucket Trajectory | A ...
Schematic of a dragline | Download Scientific Diagram. Fig 4 - uploaded by Aishwarya Mishra. Content may be subject to copyright. Download. View publication. Schematic of a dragline. Source...
In strip mining operations, draglines are used to remove overburden from mines. Unlike most mining equipment, the bulk of draglines are not diesel-powered. Their power consumption relies on a direct connection to the high-voltage gride at voltages of between 6.6 and 22kV. A typical dragline can use up to six megawatts during normal …
Dragline performance depends on the operating speed, the bucket payload, and the machine availability, which could be negatively impacted by the actions taken to increase the machine productivity. In this study, the writers develop the kinematics and dynamic modeling of a dragline front-end assembly using the vector loop and …
Download scientific diagram | Main mechanical parts of a walking dragline 21 from publication: Dragline maintenance data analysis using logarithmic scatterplot | Determining maintenance priorities ...
3. Procedure of Dragline Excavation is started by swinging the empty bucket to the digging position, at the same time slacking off drag and hoist cables. Then the bucket is pulled towards the machine while digging …
Make sure the air lubricator is working. Sticking main drum brakes. Engage the draw works, no hoist or drag and slip the brakes as the drum turn. The 25B did have touchy swing drums, but the swing pressure is adjustable as is it's holding power, but the drums must be clean from rust. Good Luck.
This draws the workable limits of the dragline on the range diagram cross-section. Pick the existing ground polyline and the location that the center of the machine is sitting. A block of three lines is drawn representing the height, digging depth and horizontal reach of the dragline. There is a vertex placed at the intersection of the ground ...
Dragline is an HEMM used in coal mining for removal of overburden and dumping it into de-coaled area. Failure of dragline contributed to total downtime of 4955 h in 28-month (2014–16) period and ...
2.1 Operation planning for draglines. The dragline operation planning problem has been addressed in only a small number of scholarly works. Previous work by Sier approached the problem by modelling the digging and dumping process as relocating sub-blocks of overburden to the destination locations above the spoil pile for a given dragline …
Motors. For conventional geared draglines, Siemens has developed an entire range of motors featuring ideal characteristics for all mo-tions. The motor family is suitable for drag-lines with bucket capacities ranging from 10m3 to 122m3. Motors are coupled to. common gear case to meet the power demands of each motion.
Fill out the pit and dragline input forms to create a standard dig-style dragline range diagram of a pit cross section. The diagram includes chop, cut, and rehandle as well as a procedurally drawn dragline. Will calculate pit areas including chop, cut and spoil volumes. Additionally, the app calculates the rehandle volume and percent, …
ENGINEERING CO. A Division of The Company, Inc. , Wisconsin 54220 DRAGLINE RANGE DIAGRAM 41" (1.0m) LAGGINGS WITH |s/8" (41.3mm) DRAG ROPE
Balancing diagram-a basic planning tool for dragline operation. In: Proceedings of the national seminar on emerging technology in surface mines and environmental challenges, Mangalore, India, pp 85-89
Dragline Rigging and Replacement Parts. View our user friendly clickable dragline catalog. FairWinds Manufacturing Dragline Catalog. You can access the catalog through the attachment. Almost every item in the catalog is clickable for your convenience. For instance, if you're interested in a specific item for a 7-yard bucket, simply click on ...
DRAGLINE RANGE DIAGRAM 38" (l.0m) DRUMS WITH 1¾" (44.5mm) DRAG ROPE (OPTIONAL) 4600 VICON H The working ranges in the table below are based on the following conditions: 1. Dimension 'F' is based on a 'G' dimension of 20' (6.1m). 2. Dimension 'D' is based on a 16' (4.9m) floor level bottom to
A dragline-balancing diagram is prepared incorporating suitably selected machine, design, and geotechnical parameters of quarry. Typical balancing diagram for …
From this diagram the Dumping Radius R, and the Dumping Height Ha, of the dragline can be determined. Note that this is one section only. In practice it is uneconomic to fix the dragline geometry from the extreme pit sections. A dragline is selected that will be suitable for the majority of the deposit.
dragline range diagram 39oob, 3900 vicon revolving fairlead -- equal sput drums f g h f i f b l 60 ° d ~lax ~lax //ax a boom length feet c cl of rotation to center dump meters b boom angle degrees feet d depth cut approx. e digging reach approx. f dumping height h height from grade to cl of boom point j casting
The study has revealed that although the preparation of balancing diagram for planning of dragline operations is the first and the most important step, its actual implementation is equally important. Marked discrepancies in the productivity parameters as envisaged by the balancing diagram and as observed in the field studies, have been ...
Word drag is used because it has the ability to drag material at far distance from the machine. Dragline consists of drag rope, large bucket, boom, hoist rope and driving motors. As shown in the figure; …
Dragline Key Components. Typical configuration, dig & dump cycle, understanding dragline working envelope, and dragline buckets. Dragline Operating Methods. Range diagrams, pit layout, box cuts, single seam applications, multi-seam applications, use of dozers & throw blasting, handling geotechnical & hydrological issues. Dragline Productivity
Dragline consists of multiple electrical, mechanical and hydraulic systems, which allow digging and dumping cycles. Important subsystems of dragline are hoisting unit, dragging unit, bucket, boom, rigging unit, rotating frame, swing unit, walking unit, and machinery house. ... Schematic diagram of drag system of dragline. 3.2. Causal model ...
Schematic diagram of dragline operation. Source publication. ASSESSMENT OF COMPARATIVE OPERATING COST OF NEW DRAGLINE VS. OUTLIVE DRAGLINE. …
DRAGLINE BALANCING DIAGRAM: Dragline balancing primarily means establishing relationship between the system capacity & its workload. High capital outlay for dragline requires efficient operation to obtain low cost of OB removal. Since deployment and operation of a dragline in different modes affect its productivity, it will be necessary to …
Dragline excavators are incredibly efficient machines, capable of completing large projects quickly and accurately. This efficiency is especially beneficial for large-scale construction projects, where a lot of work needs to be completed quickly. The excavator's long reach also helps to reduce the need for additional equipment, further ...
