Proven performance
May 1st 2006 Austria's annual Bregenz Festival on the eastern shore of Lake Constance is renowned for its spectacular opera productions and is held in two lakeside theatres.
The floating stage on the lake - the Seebühne - is known for its imaginative sets that require a high level of technical support.
ZIMM lifting systems, available in the UK from HepcoMotion, has been used by festival theatre complex since its inception in 1997. Four ZIMM 250kN screw jacks were initially specified to raise and lower the scenery platform a distance of 1790mm typically with a static load of 27 tons and a dynamic load of 17 tons.
The success of this application led to four further ZIMM screw jacks being ordered - size 50kN - for the connecting passageway between the floating stage and the festival theatre. A lifting distance of 3450mm was required for this platform and the system had to withstand 12 tons of static load and 8 tons of dynamic load.
In view of the length of travel involved ZIMM engineers suggested the load on the gearbox spindles should be applied under tension not pressure. This allowed the dimensions of the lifting systems to be considerable smaller. As a result the mechanism not only cost less to buy but also to install.
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