Jump to content

Aerial lift

From Wikipedia, the free encyclopedia
Not to be confused with Airlift.
For the ground-based mechanical device, see Aerial work platform.
Plateau Rosa aerial tramway, in Cervinia, Italy, moves 120 people at a time to a 3,480 m (11,420 ft) glacier.
8-passenger gondola lift in Panticosa Ski Resort, Spain.

An aerial lift,[1] also known as a cable car or ropeway, is a means of cable transport in which cabins, cars, gondolas, or open chairs are hauled above the ground by means of one or more cables. Aerial lift systems are frequently employed in a mountainous territory where roads are relatively difficult to build and use, and have seen extensive use in mining. Aerial lift systems are relatively easy to move and have been used to cross rivers and ravines. In more recent times, the cost-effectiveness and flexibility of aerial lifts have seen an increase of gondola lift being integrated into urban public transport systems.[citation needed]

Types

[edit]

Cable Car

[edit]
Cable car in Engadine, Switzerland, suspended on two support cables with an additional haul rope.
Cable Car to the Aiguille du Midi, France, suspended on one support cable with an additional haul rope.
Video of an aerial tramway going downhill at Mount Tsukuba in Ibaraki, Japan.
Cable Car past the coastline at Ancol, Indonesia
Main article: Aerial tramway

A cable car (British English) or an aerial tramway, aerial tram (American English), uses one or two stationary ropes for support while a separate moving rope provides propulsion.[2] The grip of an aerial tramway is permanently fixed onto the propulsion rope. Aerial trams used for urban transport include the Roosevelt Island Tramway in New York City, as well as the Portland Aerial Tram.[citation needed]

Gondola lift

[edit]
The London Cable Car over the River Thames, London.
A gondola lift in Tignes, France.
Main article: Gondola lift

A gondola lift consists of a continuously circulating cable that is strung between two or more stations, over intermediate supporting towers. The cable is driven by a bullwheel in a terminal, which is connected to an engine or electric motor.[3] Multiple gondola cabins are attached to the cable, usually with detachable grips, enabling them to slow down in the stations to facilitate safe boarding. Fixed grip variants exist, although these are considerably less common. Lifts with a single cable are sometimes referred to as "mono-cable" gondola lifts. Depending on the design of the individual lift, the capacity, cost, and functionality of a gondola lift will differ dramatically. Because of the proliferation of such systems in the Alpine regions of Europe, the French language name of télécabine is also used in an English language context. Gondola lifts are also used for urban transportation. Examples include the Singapore Cable Car, Metrocable (Medellín), Metrocable (Caracas), Mi Teleférico (La Paz), and London Cable Car.[citation needed]

Bicable and tricable gondola lifts

[edit]
The Ngong Ping 360 bicable gondola lift in Hong Kong, built by Leitner.
A tricable gondola lift at the Stubaier Gletscher, Austria.
Main articles: Bicable gondola lift and Tricable gondola lift

Gondola lifts which feature one stationary 'support' rope and one haul rope are known as bi-cable gondola lifts, while lifts that feature two support ropes and one haul rope are known as tri-cable gondola lifts. Examples include Ngong Ping Skyrail (Hong Kong) and the Peak 2 Peak Gondola (Canada).[citation needed]

Funitel

[edit]
Funitel at Val Thorens, France
Main article: Funitel

A funitel differs from a standard gondola lift through the use of two overhead arms, attached to two parallel haul cables, providing more stability in high winds.[4] The name funitel is a blend of the French words funiculaire and telepherique. Systems may sometimes be referred to as "double monocable" (DMC), where two separate haul cables are used, or "double loop monocable" (DLM) where a single haul cable is looped round twice.[citation needed]

Funitels combine a short time between successive cabins with a high capacity (20 to 30 people)[5] per cabin.

Funifor

[edit]
The Arabba Porta Vescovo Funifor
The returning haul cable (top), the support cables (middle), and the non-returning haul cable (bottom) are visible here. These structures appear at regular intervals along the line, to hold the cables together and keep a consistent track width

A funifor is a type of cable car with two support ropes and a haul rope, looped around. Each system is composed of a single cabin shuttling back-and-forth. Many installations are built with two parallel, but independent, lines. The funifor design was developed by the Italian manufacturer, Hölzl, which later merged with Doppelmayr Italia. Today, the design is therefore patented by Doppelmayr Garaventa Group.[6]

At the top of each track, the haul rope loops back to the bottom instead of looping over to serve the other track, as would occur with a normal aerial tramway. This is shown in the diagram below. This feature allows for a single cabin operation when traffic warrants. The independent drive also allows for evacuations to occur by means of a bridge connection between the adjacent cabins. [7] The main advantage of the funifor system is its stability in high wind conditions owing to the horizontal distance between the two support ropes.[6]

Diagram of the looped haul cable of the funifor system. The support cables are not shown

Chairlift

[edit]
Fixed grip chairlift at Stresa, Italy.
A detachable chairlift with a bubble, in Bad Hofgastein, Austria.
Main articles: Chairlift and Detachable chairlift

Chairlifts are continuously circulating systems carrying chairs, which usually enable skiers to board without removing skis. They are a common type of lift at most ski areas and in mountainous areas. They can also be found at some amusement parks and tourist attractions.[8]

Detachable chairlifts usually move far faster than fixed-grip chairlifts, typically 5 m/s (16.4 ft/s) compared with 2 to 2.5 m/s (6.6 to 8.2 ft/s). Because the cable moves faster than most passengers could safely disembark and load, each chair is connected to the cable by a powerful spring-loaded cable grip which detaches at terminals, allowing the chair to slow considerably for convenient loading and unloading at a typical speed of 0.75 m/s (2.5 ft/s), a speed slower even than fixed-grip. Chairs may be fitted with a "bubble" canopy to offer weather protection.[citation needed]

Hybrid lift

[edit]
A hybrid lift in Turracher Höhe, Austria.
Main article: Hybrid lift

A hybrid lift is a fusion of a gondola lift and a chair lift. The company Leitner refers to it as telemix,[9] while Doppelmayr uses the term combination lift.[10] An example is Ski Arlberg's Weibermahd lift in Vorarlberg (Austria) which alternates between 8-person chairlifts and 10-person gondolas.[11]

Hand-powered

[edit]
A tuin in use in Nepal

In undeveloped areas with rough terrain, simple hand-powered cable-cars may be used for crossing rivers, such as the tuin used in Nepal.[12][13]

Material ropeways

[edit]
View along the Forsby-Köping limestone cableway, Sweden
Main article: Material ropeway

A material ropeway or ropeway conveyor[14] is an aerial lift from which containers for goods rather than passenger cars are suspended. These are usually monocable or bicable gondola lifts.

Material ropeways are typically found around large mining concerns, and can be of considerable length. The COMILOG Cableway, which ran from Moanda in Gabon to Mbinda in the Republic of the Congo, was over 75 km in length. The Norsjö aerial tramway in Sweden had a length of 96 kilometers.[citation needed]

Abbreviations

[edit]

The following abbreviations are frequently used in the industry:[citation needed]

en English fr French de German
ATW Aerial Tramway TPH Téléphérique PB Pendelbahn
MGD Monocable gondola detachable TCD Télécabine débrayable EUB Einseilumlaufbahn
BGD Bicable gondola detachable TPH 2S Téléphérique 2S ZUB Zweiseilumlaufbahn
TGD Tricable gondola detachable TPH 3S Téléphérique 3S 3S 3S-Bahn
MGFP Monocable gondola fixed grip pulsed TCP Télécabine pulsée GUB Einseil-Gruppenumlaufbahn
MGFJ Monocable gondola fixed grip jigback TCV Télécabine à va-et-vient GPB Einseil-Gruppenpendelbahn
BGFP Bicable gondola fixed grip pulsed TPH P Téléphérique pulsé Zweiseil-Gruppenumlaufbahn
CLF Chairlift fixed grip TSF Télésiège à pince fixe SB Sesselbahn fix geklemmt
CLD Chairlift detachable TSD Télésiège débrayable KSB kuppelbare Sesselbahn
CGD Chairlift gondola detachable TSCD
or
TMX 		Téléporté débrayable avec sièges et cabines
or
Télémix 		Kombibahn (Sessel + Gondel)
FT Funitel FUN Funitel Funitel
FUF Funifor FUF Funifor Funifor
RPC Rope conveyor Télécorde Materialseilbahn

See also

[edit]

References

[edit]
  1. ^ "Skilifts.org - Glossary of Aerial Lift Terms". Skilifts.org. Retrieved 26 June 2022.
  2. ^ The Gondola Project Archived 2017-05-17 at the Wayback Machine Aerial Technologies, Lesson 5: Aerial Trams - Retrieved on 2010-04-24
  3. ^ Cable Propelled Systems in Urban Environments Archived 2012-03-14 at the Wayback Machine Edward S. Neumann - Retrieved on 2010-08-05
  4. ^ "funitel « The Gondola Project". Gondolaproject.com. 28 October 2011. Retrieved 2019-04-22.
  5. ^ "Lift-World :: Lift-Database - Funitels". Archived from the original on 10 February 2012. Retrieved 26 June 2022.
  6. ^ a b "Funifor". Doppelmayr Garaventa Group. Retrieved 2010-12-10.
  7. ^ "Doppelmayr: A convenient trip to the Portavescovo with the Funifor". ropeways.net (SEC - Software Engineering Center, Wanker & Viehauser OEG). 2006-08-11. Archived from the original on 2007-09-28. Retrieved 2007-01-13.
  8. ^ "Scenic Skyway - Knoebels, PA".
  9. ^ "Telemix - Products - LEITNER ropeways". Leitner-ropeways.com (in German). Retrieved 2019-08-14.
  10. ^ "Combination Lift | Products". Doppelmayr.com. Retrieved 2019-08-14.
  11. ^ "8/10-CGD Weibermahd". Doppelmayr.com.
  12. ^ "Tuin river crossings". Practical Action. Archived from the original on 2019-04-11. Retrieved 2012-06-09.
  13. ^ "Aerial Ropeways in Nepal". Appropedia. Retrieved 2012-06-09.
  14. ^ Ernst, Dr.-Ing. Richard (1989). Wörterbuch der Industriellen Technik (5th ed.). Wiesbaden: Oscar Brandstetter, 1989, p. 659. ISBN 3-87097-145-2.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Aerial_lift&oldid=1235914555"