File:Trispastos scheme.svg

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Summary

DescriptionTrispastos scheme.svg

Deutsch: Darstellung eines römischenTrispastos-Krans. Der Trispastos ("3-Rollen-Zug") stellte den einfachsten römischen Krantyp dar. Er bestand aus Hebebaum, einer Haspel, einem Seil und einem Flaschenzug mit drei Rollen. Dies entspricht einer Übersetzung von 3 zu 1. Ein einzelner Arbeiter an der Haspel konnte - unter der Annahme, dass 50 kg den maximalen Krafteinsatz darstellen, den ein Mann über einen längeren Zeitraum ausüben kann - Lasten von 150 kg heben (3 Rollen x 50 kg).

English: Scheme of an ancient RomanTrispastoscrane ("Three-pulley-crane"). Being the simplest Roman crane, theTrispastos consisted of a single-beam jib, a winch, a rope, and a block containing three pulleys. Having thus a mechanical advantage of 3:1, a single man working the winch could raise loads of 150 kg (3 pulleys x 50 kg), assuming that 50 kg represent the maximum effort a man can exert over a longer time period.

Français : Schéma d'une antiquegrue romaine du typetrispastos utilisant troispoulies.

Date

June 2008

Source

Own work

Based upon : Dienel, Hans-Liudger & Meighörner, Wolfgang:Der Tretradkran, Publication of the Deutsches Museum (Technikgeschichte Series), 2nd ed., München 1997, p.12f.

Author

Eric Gaba (Sting -fr:Sting)

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Other versions

Pentaspastos-type crane

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June 2008

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	14:36, 17 November 2010		1,520 × 1,370(117 KB)	Sting	Error correction
	23:17, 9 June 2008		1,520 × 1,370(117 KB)	Sting	== Summary == {{Information \|Description={{en\|Scheme of an Antic Roman Trispastoscrane.}} {{fr\|Schéma d'une antiquegrue romaine du type ''trispastos''.}} \|Source=Own work<br/> Based upon : Hans-Liudger Diene