A fact from Dragline excavator appeared on Wikipedia's
Main Page in the
Did you know column on 3 April 2004. The text of the entry was as follows:
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Scottfisher, can you add the geographical location of Manitowok in the photo caption? Thanks! Badagnani 00:55, 17 August 2005 (UTC)
Sure, Not a problem, I know the history of "Manny"; It came from the Nevada Test Site, then went to Lawrence Livermore National Laboratory in California, now at to Oakridge, Tennessee, ORNL. All are Department of Energy sites, in the USA. I think Manny is up for sale now. Regards, Scotty
I believe Big Brutus is technically a "shovel", not a dragline (one lifts, the other drags). In the article, Big Brutus is referred to as a "dragline shovel". Is there such a thing?
The external link at the bottom of the article is a website that calls Big Brutus a "electric mining shovel", not a dragline.
There is no such thing as a "dragline shovel". Big Brutus is a rope shovel which is completely different from a dragline.
Mark
Regarding the statement:
What kind of feet are these that they put less pressure on the ground than caterpillar tracks? Is it even true? That GEM thing linked near the bottom of the page is pictured on caterpillar tracks. -- ToobMug 12:48, 12 December 2006 (UTC)
I am no expert on draglines, mining, or similar, so the following text is (a) under the wrong heading (should be 'Usage' or similar), and
(b) almost completely incomprehensible. I have identified (wikified) most of the terms I think need defining. (Note that NONE of these links has been checked for relevance!)
It looks fascinating, and definitely belongs in the article. However, it would benefit from a series of diagrams to explain what was being described. This would avoid the need for 'every other word' to be a wikilinked! A section on 'definition of terms' would be a useful bonus.
EdJogg 10:56, 15 December 2006 (UTC)
The GEM (Giant Excavating Machine)is a shovel, not a drag line. While the size and application are similar the machines opeation is not. A shovel works best while digging from its tracks up. A dragline does better while working below the level of its base.
I don't know the engineering involved, but nearly all shovels operate on tracks, while drag lines tend to have feet and are usually refered to as "walking draglines". This may have something to do with the method of operation. I have seen a couple of photos of draglines that have slid into the pit that they were digging.
The shovels also have an operational hazard in that the high wall can collapse on them. The GEM was damaged at one point in its career by such a fall. Steve
GEM is a 'Rope Shovel', not a dragline excavator. Compare the pictures of GEM [1] with the pictures in Steam Shovel
As a dragline excavator only moves overburden half of its working time (the other half being used to re-position the empty shovel) and for each working cycle, its enormous mass has to be accelerated and decelerated twice, I think it would be interesting to compare the efficiency of those machines to bucket-wheel excavators which work more steadily. Since draglines are in widespread use in strip mines around the world and really large bucket-wheel excavators only seem to be in use in Germany, is there any real advantage of the draglines? -- 217.225.66.7 ( talk) 23:08, 8 July 2008 (UTC)
I believe that we should focus the article to look at mining draglines. In number used, and dirt moved, mining draglines vastly outnumber non-mining draglines. Thus, when quoting statistics, like weight, bucket size, etc, we should quote averages for mining draglines. Also, when discussing of method of movement, how they're powered, how they work, a mining focus would be more effective.
I believe that most people who come looking for information on draglines would come looking for information on mining draglines. Perhaps we could have a separate section for civil engineering draglines. David Drew ( talk) 19:37, 2 September 2008 (UTC)
Here's a draft of a table to be incorporated into the main article. It can clearly show the differences between the small and the large draglines, and how well the draglines scale.
It obviously needs some more work, but is it appropriate to use this page to draft up stuff like this?
P&H 2355 | Marion 8200 | Marion 8750 | Bucyrus-Erie 4250-W 'Big Muskie' | |
---|---|---|---|---|
Bucket Size | 11 m3 | 55 m3 | 114 m3 | 168 m3 |
Boom Length | 48.7 m | 99 m | 107 m | 94.4 m |
Dig Depth | 20 m | 45 m | 55 m | 56.4 m |
Dump Height | 20 m | 43 m | 48 m | ? |
Dig Reach | 43 m | 86 m | 96 m | 302 feet (92 m) (Dump Radius) |
Power System | Diesel - Electric | Electric | Electric | Electric |
Weight | 694 tonnes | 3,750 tonnes | ~6,500 tonnes | 14,500 tonnes [1] |
Movement method | Tracks | Walking | Walking | Walking |
Wow, this table tool is really annoying use. David Drew ( talk) 00:30, 3 September 2008 (UTC)
References
Having been next to and even up in the cab of a large dragline while it was walking I would have to say that these pictures don't do it justice. I also feel that the picture of the pile driver is misleading since this really is not what draglines are primarily used for. The video that I linked to gives a good illustration of how draglines operate including the fact that slacking the drag rope allows the bucket to tip forward. I do have pictures with people in them that show the scale better. I have a picture with my foot on the main power cable, I have a good shot of the walking cam, and a fairly good shot of the tub. I think some more pictures would be better. — Preceding unsigned comment added by Brehmel ( talk • contribs) 23:09, 18 February 2012 (UTC)
In "History", should the paragraph "The Marion Steam ...1997." be changed to something like "The Marion Steam Shovel Dredge Company (established in 1880) built its first walking dragline with a simple single-crank mechanism in 1939. The company changed ...1997."? Should the next paragraph; "Bucyrus International supplied ...weight." be changed to something like "Bucyrus International entered the dragline market with the purchase of manufacturing rights for the Heyworth-Newman dragline excavator in 1910. Their "Class 14" dragline ...weight."? In both paragraphs the deleted text refers to shovels used in Panama, not draglines. Sammy D III ( talk) 14:06, 25 October 2012 (UTC)
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A fact from Dragline excavator appeared on Wikipedia's
Main Page in the
Did you know column on 3 April 2004. The text of the entry was as follows:
|
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||
|
Scottfisher, can you add the geographical location of Manitowok in the photo caption? Thanks! Badagnani 00:55, 17 August 2005 (UTC)
Sure, Not a problem, I know the history of "Manny"; It came from the Nevada Test Site, then went to Lawrence Livermore National Laboratory in California, now at to Oakridge, Tennessee, ORNL. All are Department of Energy sites, in the USA. I think Manny is up for sale now. Regards, Scotty
I believe Big Brutus is technically a "shovel", not a dragline (one lifts, the other drags). In the article, Big Brutus is referred to as a "dragline shovel". Is there such a thing?
The external link at the bottom of the article is a website that calls Big Brutus a "electric mining shovel", not a dragline.
There is no such thing as a "dragline shovel". Big Brutus is a rope shovel which is completely different from a dragline.
Mark
Regarding the statement:
What kind of feet are these that they put less pressure on the ground than caterpillar tracks? Is it even true? That GEM thing linked near the bottom of the page is pictured on caterpillar tracks. -- ToobMug 12:48, 12 December 2006 (UTC)
I am no expert on draglines, mining, or similar, so the following text is (a) under the wrong heading (should be 'Usage' or similar), and
(b) almost completely incomprehensible. I have identified (wikified) most of the terms I think need defining. (Note that NONE of these links has been checked for relevance!)
It looks fascinating, and definitely belongs in the article. However, it would benefit from a series of diagrams to explain what was being described. This would avoid the need for 'every other word' to be a wikilinked! A section on 'definition of terms' would be a useful bonus.
EdJogg 10:56, 15 December 2006 (UTC)
The GEM (Giant Excavating Machine)is a shovel, not a drag line. While the size and application are similar the machines opeation is not. A shovel works best while digging from its tracks up. A dragline does better while working below the level of its base.
I don't know the engineering involved, but nearly all shovels operate on tracks, while drag lines tend to have feet and are usually refered to as "walking draglines". This may have something to do with the method of operation. I have seen a couple of photos of draglines that have slid into the pit that they were digging.
The shovels also have an operational hazard in that the high wall can collapse on them. The GEM was damaged at one point in its career by such a fall. Steve
GEM is a 'Rope Shovel', not a dragline excavator. Compare the pictures of GEM [1] with the pictures in Steam Shovel
As a dragline excavator only moves overburden half of its working time (the other half being used to re-position the empty shovel) and for each working cycle, its enormous mass has to be accelerated and decelerated twice, I think it would be interesting to compare the efficiency of those machines to bucket-wheel excavators which work more steadily. Since draglines are in widespread use in strip mines around the world and really large bucket-wheel excavators only seem to be in use in Germany, is there any real advantage of the draglines? -- 217.225.66.7 ( talk) 23:08, 8 July 2008 (UTC)
I believe that we should focus the article to look at mining draglines. In number used, and dirt moved, mining draglines vastly outnumber non-mining draglines. Thus, when quoting statistics, like weight, bucket size, etc, we should quote averages for mining draglines. Also, when discussing of method of movement, how they're powered, how they work, a mining focus would be more effective.
I believe that most people who come looking for information on draglines would come looking for information on mining draglines. Perhaps we could have a separate section for civil engineering draglines. David Drew ( talk) 19:37, 2 September 2008 (UTC)
Here's a draft of a table to be incorporated into the main article. It can clearly show the differences between the small and the large draglines, and how well the draglines scale.
It obviously needs some more work, but is it appropriate to use this page to draft up stuff like this?
P&H 2355 | Marion 8200 | Marion 8750 | Bucyrus-Erie 4250-W 'Big Muskie' | |
---|---|---|---|---|
Bucket Size | 11 m3 | 55 m3 | 114 m3 | 168 m3 |
Boom Length | 48.7 m | 99 m | 107 m | 94.4 m |
Dig Depth | 20 m | 45 m | 55 m | 56.4 m |
Dump Height | 20 m | 43 m | 48 m | ? |
Dig Reach | 43 m | 86 m | 96 m | 302 feet (92 m) (Dump Radius) |
Power System | Diesel - Electric | Electric | Electric | Electric |
Weight | 694 tonnes | 3,750 tonnes | ~6,500 tonnes | 14,500 tonnes [1] |
Movement method | Tracks | Walking | Walking | Walking |
Wow, this table tool is really annoying use. David Drew ( talk) 00:30, 3 September 2008 (UTC)
References
Having been next to and even up in the cab of a large dragline while it was walking I would have to say that these pictures don't do it justice. I also feel that the picture of the pile driver is misleading since this really is not what draglines are primarily used for. The video that I linked to gives a good illustration of how draglines operate including the fact that slacking the drag rope allows the bucket to tip forward. I do have pictures with people in them that show the scale better. I have a picture with my foot on the main power cable, I have a good shot of the walking cam, and a fairly good shot of the tub. I think some more pictures would be better. — Preceding unsigned comment added by Brehmel ( talk • contribs) 23:09, 18 February 2012 (UTC)
In "History", should the paragraph "The Marion Steam ...1997." be changed to something like "The Marion Steam Shovel Dredge Company (established in 1880) built its first walking dragline with a simple single-crank mechanism in 1939. The company changed ...1997."? Should the next paragraph; "Bucyrus International supplied ...weight." be changed to something like "Bucyrus International entered the dragline market with the purchase of manufacturing rights for the Heyworth-Newman dragline excavator in 1910. Their "Class 14" dragline ...weight."? In both paragraphs the deleted text refers to shovels used in Panama, not draglines. Sammy D III ( talk) 14:06, 25 October 2012 (UTC)
Hello fellow Wikipedians,
I have just modified 5 external links on Dragline excavator. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 10:46, 10 November 2016 (UTC)