Comments
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One of the seven wonders of the British Waterways. This was the first Boat Lift in the world. Most of the later ones have been influenced by this one. - ***** Another fine video.
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Hij heeft inderdaad ook iets weg van een kathedraal, ja, met die zijbeuken van ijzer. Een slim systeem ook, ik heb de tekst rechts er eens goed op nagelezen. Fijne zondag.
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-:)
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Ja, dit een vrij oude lift en inderdaad een interessante constructie. Groetjes en een fijn weekend!
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Alweer een mooi staaltje van waterbouw. Interessant.
The Anderton Boat Lift is situated near the village of Anderton, Cheshire, in north-west England. It provides a 50 feet (15.2 m) vertical link between two navigable waterways: the River Weaver and the Trent and Mersey Canal. Built in 1875, the boat lift was in use for over 100 years until it was closed due to corrosion in 1983. Restoration started in 2001 and the boat lift was re-opened in 2002. The lift and associated visitor centre and exhibition are operated by British Waterways. It is one of only two working boat lifts in the United Kingdom; the other is Falkirk Wheel in Scotland. The technical construction: The two wrought iron caissons were each 75 ft (22.9 m) long by 15 feet 6 inches (4.7 m) wide by 9 feet 6 inches (2.9 m) deep, and could each accommodate two 72 ft (21.9 m) narrowboats or a single barge with a beam of up to 13 feet (4.0 m). Each caisson had a weight of 90 tons when empty and 252 tons when full of water (because of displacement, the weight is the same with or without boats). Each caisson was supported by a single hydraulic ram consisting of a hollow 50 ft (15.2 m) long cast iron vertical piston with a diameter of 3 ft (0.9 m), travelling within a buried 50 ft (15.2 m) long cast iron vertical cylinder with a diameter of 5 feet 6 inches (1.68 m). At river level the caissons sat in a water-filled sandstone lined chamber. The above ground superstructure consisted of seven hollow cast iron columns which provided guide rails for the caissons and supported an upper working platform, walkways and access staircase. At the upper level the boat lift was connected to the Trent and Mersey canal via a 165 ft (50.3 m) long wrought iron aqueduct, with vertical wrought iron gates at either end. In normal operation the cylinders of the two hydraulic rams were connected by a 5 in (130 mm) diameter pipe, which allowed water to pass between them, thus lowering the heavier caisson and raising the lighter one. To make adjustments at the start and end of a lift either cylinder could be operated independently, powered by an accumulator or pressure vessel at the top of the lift structure, which was in turn kept primed by a 10 horsepower (7.5 kW) steam engine. If necessary, the steam engine and accumulator could operate either hydraulic ram on its own, thus raising the caissons independently, although this would take about 30 minutes to raise a caisson from river level to canal level, as opposed to 3 minutes in normal operation. Source and more information: http://en.wikipedia.org/wiki/Anderton_Boat_Lift