"Gallows frame" redirects here. For the frame of a gallows, see Gallows.
A headframe[1] (also known as a gallows frame,[2]winding tower,[3]hoist frame,[3]pit frame,[3]shafthead frame,[3]headgear,[3]headstock or poppethead) is the structural frame above an underground mine shaft so as to enable the hoisting of machinery, personnel, or materials.[2]
The Kintore Headframe and winding drums in Broken Hill, NSW
The steel headframe of the Ottiliae shaft (1876) in Clausthal-Zellerfeld, the oldest existing headframe in Germany
Modern headframes are built out of steel, concrete or a combination of both. Timber headframes are no longer used in industrialized countries, but are still used in developing nations. Conventionally steel headframes are used when a drum hoist is employed, and concrete headframes are built for friction hoists; however a steel headframe can be used with a friction hoist for shafts with a smaller capacity and depth.[1]
Steel headframes
Headframe of the #1 Shaft at Oyuu Tolgoi
A steel headframe is less expensive than a concrete headframe; the tallest steel headframe measures 87 m.[4] Steel headframes are more adaptable to modifications (making any construction errors easier to remedy), and are considerably lighter, requiring less substantial foundations. As steel headframes are easier to design, they have the potential to utilize "off the shelf" design tools. Construction of a steel headframe can be easily interrupted and restarted if necessary for statutory holidays or bad weather, where slip forming concrete is not. Upon mine closure and mine reclamation a steel headframe is easier to demolish and may have value as scrap metal.[1]
A recently erected steel headgear in the Zambian copper belt town of Chililabombwe at the Konkola number 4 shaft has a total height of 81 metres to the top of the maintenance crane rail, with the centre-line of the head sheaves at 71 metres above the collar, making it the highest steel headgear in Africa.
Concrete headframes
The enclosed #2 Headframe (left) and the Hoist House (right) of the Quincy Mine
Concrete headframes require less maintenance and are less susceptible to corrosion than steel headframes. There is much less waste of concrete during construction of a concrete headframe than there is of steel in construction of a steel headframe. Concrete headframes provide an enclosure upon construction, whereas steel headframes require cladding and insulation to protect from weather. Concrete headframes are less susceptible to vibrations and sway less during high winds. Concrete is usually more readily available than steel (except in remote locations), and the price is predictable, whereas fabricated steel prices can be volatile.[1]
Headframes have become prominent features in historic mining regions. The Ruhr district of Germany and the South Wales Valleys in Britain are both examples of areas which are now associated with headframes due to the large number constructed to mine coal during the Industrial Revolution. Most of these headframes have now been removed although both regions have turned non-operating mines with headframes into national museums; the German Mining Museum in Bochum and Big Pit National Coal Museum in Blaenavon. Sporting teams from former coal mining regions such as Llanharan RFC and Cilfynydd RFC have headframes included in their club badges.
In the United States, over a dozen headframes can still be seen around the town of Butte, Montana. Some of those headframes are illuminated at night with red LED lighting to commemorate Butte's coppermining heritage, and the headframe is easily the town's most iconic image.
In Yellowknife, Canada, the demolition of the Con Mine headframe has met significant public opposition.[5] The headframe was the tallest structure in the Northwest Territories[6] and is regarded by many in the town to be an important symbol of the region's mining heritage.
See also
Look up headframe in Wiktionary, the free dictionary.
Wikimedia Commons has media related to Winding towers.
^ abcdDe la Vergne, Jack (2003). . Tempe: McIntosh Engineering. pp. 143–147. ISBN0-9687006-1-6. Archived from the original on 2017-05-04. Retrieved 2008-11-14.
^ ab. Archived from the original on 2014-09-06. Retrieved 2008-10-28.
^ abcdeErnst, Dr.-Ing. Richard (1989). Wörterbuch der Industriellen Technik (5th ed.). Wiesbaden: Oscar Brandstetter, 1989. ISBN3-87097-145-2
^van Wyngaardt, Megan. "New Gold Fields steel headgear tallest in the world". Mining Weekly. Retrieved 2018-06-09.
^. Archived from the original on 2013-09-21. Retrieved 2013-11-06.
^. Archived from the original on 2013-09-21. Retrieved 2013-11-06.
February 13, 2023
headframe, this, article, about, mining, shaft, infrastructure, other, uses, headstock, disambiguation, gallows, frame, redirects, here, frame, gallows, gallows, headframe, also, known, gallows, frame, winding, tower, hoist, frame, frame, shafthead, frame, hea. This article is about the mining shaft infrastructure For other uses see Headstock disambiguation Gallows frame redirects here For the frame of a gallows see Gallows A headframe 1 also known as a gallows frame 2 winding tower 3 hoist frame 3 pit frame 3 shafthead frame 3 headgear 3 headstock or poppethead is the structural frame above an underground mine shaft so as to enable the hoisting of machinery personnel or materials 2 The Kintore Headframe and winding drums in Broken Hill NSW The steel headframe of the Ottiliae shaft 1876 in Clausthal Zellerfeld the oldest existing headframe in Germany Contents 1 Design 1 1 Steel headframes 1 2 Concrete headframes 2 Symbolism 3 See also 4 ReferencesDesign EditModern headframes are built out of steel concrete or a combination of both Timber headframes are no longer used in industrialized countries but are still used in developing nations Conventionally steel headframes are used when a drum hoist is employed and concrete headframes are built for friction hoists however a steel headframe can be used with a friction hoist for shafts with a smaller capacity and depth 1 Steel headframes Edit Headframe of the 1 Shaft at Oyuu Tolgoi A steel headframe is less expensive than a concrete headframe the tallest steel headframe measures 87 m 4 Steel headframes are more adaptable to modifications making any construction errors easier to remedy and are considerably lighter requiring less substantial foundations As steel headframes are easier to design they have the potential to utilize off the shelf design tools Construction of a steel headframe can be easily interrupted and restarted if necessary for statutory holidays or bad weather where slip forming concrete is not Upon mine closure and mine reclamation a steel headframe is easier to demolish and may have value as scrap metal 1 A recently erected steel headgear in the Zambian copper belt town of Chililabombwe at the Konkola number 4 shaft has a total height of 81 metres to the top of the maintenance crane rail with the centre line of the head sheaves at 71 metres above the collar making it the highest steel headgear in Africa Concrete headframes Edit The enclosed 2 Headframe left and the Hoist House right of the Quincy Mine Concrete headframes require less maintenance and are less susceptible to corrosion than steel headframes There is much less waste of concrete during construction of a concrete headframe than there is of steel in construction of a steel headframe Concrete headframes provide an enclosure upon construction whereas steel headframes require cladding and insulation to protect from weather Concrete headframes are less susceptible to vibrations and sway less during high winds Concrete is usually more readily available than steel except in remote locations and the price is predictable whereas fabricated steel prices can be volatile 1 Symbolism Edit Schematic of headframe hoistcablewheelsheerfalse edgehoistroommineshaft Headframes have become prominent features in historic mining regions The Ruhr district of Germany and the South Wales Valleys in Britain are both examples of areas which are now associated with headframes due to the large number constructed to mine coal during the Industrial Revolution Most of these headframes have now been removed although both regions have turned non operating mines with headframes into national museums the German Mining Museum in Bochum and Big Pit National Coal Museum in Blaenavon Sporting teams from former coal mining regions such as Llanharan RFC and Cilfynydd RFC have headframes included in their club badges In the United States over a dozen headframes can still be seen around the town of Butte Montana Some of those headframes are illuminated at night with red LED lighting to commemorate Butte s copper mining heritage and the headframe is easily the town s most iconic image In Yellowknife Canada the demolition of the Con Mine headframe has met significant public opposition 5 The headframe was the tallest structure in the Northwest Territories 6 and is regarded by many in the town to be an important symbol of the region s mining heritage See also Edit Look up headframe in Wiktionary the free dictionary Hoist mining Underground mining Barony A FrameReferences Edit Wikimedia Commons has media related to Winding towers a b c d De la Vergne Jack 2003 Hard Rock Miner s Handbook Tempe McIntosh Engineering pp 143 147 ISBN 0 9687006 1 6 Archived from the original on 2017 05 04 Retrieved 2008 11 14 a b A Pictorial Walk Through the 20th Century Archived from the original on 2014 09 06 Retrieved 2008 10 28 a b c d e Ernst Dr Ing Richard 1989 Worterbuch der Industriellen Technik 5th ed Wiesbaden Oscar Brandstetter 1989 ISBN 3 87097 145 2 van Wyngaardt Megan New Gold Fields steel headgear tallest in the world Mining Weekly Retrieved 2018 06 09 Yellowknife vote saves Robertson Headframe for now North CBC News Archived from the original on 2013 09 21 Retrieved 2013 11 06 Yellowknife seeks ideas proposals to preserve mine landmark North CBC News Archived from the original on 2013 09 21 Retrieved 2013 11 06 Retrieved from https en wikipedia org w index php title Headframe amp oldid 1124646067, wikipedia, wiki, book, books, library,
