Cranes
Product focus
ADTS RDTs Skid-steers Telehandlers
Articulating boom
Telescopic boom lifts
Graders Dozers Excavators Loaders TLBs Pad foot Smooth drum PTR Tandem Mobile cranes Tower cranes Crawler cranes
Mobile crushers
Mobile screens
Bucket crushers
Generators
Mobile compressors
Hydraulic breakers
Cranes
Stefan Kühn Alf van Beem
Tower crane at the inland harbour of Trier from 1413.
A crane constructed in 1742, used for mounting masts to large sailing vessels in Copenhagen, Denmark. in 1850 to over 100 in the early 1860s. In the 1870s, Armstrong focused on hydraulic equipment, and he later supplied the lifting equipment used for London’ s Tower Bridge.
Today, internal combustion engines, electric motors, and hydraulic systems allow modern cranes to lift far heavier loads than their predecessors did. Advances in design have also allowed cranes to progress in a myriad of different ways, giving us a large variety of crane types, all suited to different applications. The most common crane types are overhead or bridge cranes( commonly used in factories), fixed cranes, and mobile cranes. Both the fixed and mobile crane categories include multiple subtypes, suited to specific weights, applications, and purposes.
To see some of these historical cranes in action, visit the Equipment and Hire website at www. equipmentandhire. co. za. n
Sources
1. Armato, P. 2015. History of the crane: How we got to hydraulic cranes. H. Brown Inc. http:// hbrown. com / cranes-rigging-blog / hydraulic-cranes / history-crane-got-hydrauliccranes /
2. Coulton, J. J. 1974. Lifting in early Greek architecture. The Journal of Hellenic Studies, 94( 1974): 1 – 19. The Society for the Promotion of Hellenic Studies. http:// www. michaelsheiser. com / PaleoBabble / LiftinginEarlyGreekArchitecture. pdf.
3. Encyclopædia Britannica. 1998. William George Armstrong, Baron Armstrong. https:// www. britannica. com / biography / William-George-Armstrong-Baron-Armstrong-of- Cragside
4. Hendrickson III, KE( ed.). 2015. The Encyclopedia of the Industrial Revolution in World History( Vol. 3). Lanham, MD: Rowman & Littlefield.
5. Matthies, AL. 1992. Medieval treadwheels: Artists’ views of building construction. Technology and Culture, 33( 3): 510 – 547. Johns Hopkins University Press. https:// uccshes. files. wordpress. com / 2012 / 09 / medieval-treadwheels-artists-views-of-buildingconstruction. pdf. 6. New World Encyclopedia. 2015. Pulley. http:// www. newworldencyclopedia. org / entry / Pulley 7. New World Encyclopedia. 2013. Crane( machine). http:// www. newworldencyclopedia. org / entry / Crane _( machine) 8. World Heritage Encyclopedia. 2016. Treadwheel crane. http:// worldheritage. org / articles / eng / Treadwheel _ crane
Rod Ward
The Fairbairn steam crane outside Bristol Harbour Railway and the Industrial Museum is still operational and is regularly steamed. Tower crane atop Mont Blanc, France.
Rod Ward
34
JULY 2017