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Advanced Engineering 2020

NEC, Birmingham(B40 1NT)

04/11/2020 - 05/11/2020

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Drives & Controls Exhibition

NEC, Birmingham(B40 1NT)

25/01/2021 - 27/01/2021

The show brings together key suppliers of state-of-the-art equipment representing the multi-tasking culture (more)

Steel magnolia

The Qi Zhong Centre Court Stadium in Shanghai will again play host the to Shanghai Tennis Masters Cup in November - under an eight piece steel roof resembling a magnolia in bloom when open. The 'petals' take just eight minutes to open or close. Each of the eight petals is driven by a helical-bevel gear unit with a preceding helical gearmotor, all from SEW-Eurodrive. Thanks to the drive's power 11kW, a gear ratio reduction of 481:1 and three revolutions per minute, the roof sections can open or close in just eight minutes. Eight Movidrive units, connected in a Profibus network, are used to ensure that the eight motors run synchronously. The Japanese architect, Mitsuru Senda, comments: "The roof system is necessary because the city experiences a lot of rain and strong sunshine. The movable roof is extremely simple, but it is the first time that such a rotational system has ever been implemented. When the roof is opened, it offers protection from the sun all round the stadium. The roof offers a pleasant environment for people inside and outside the stadium, like sitting in the shade of a tree." The Shanghai Institute of Architectural Design and Research (SIADR), which was commissioned to build the complex, including the roof, invested a year of research to check whether the roof design was feasible. A model was subjected to extensive simulations to test whether the stadium could withstand earthquakes, typhoons and other environmental impacts. During the construction phase, each 'petal' of the roof was first pre-assembled on the ground. Each part of the roof underwent tests similar to those employed by the Chinese aviation industry. A section had to pass all the tests before it was lifted and installed into position 40m above the ground.

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