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MDA Technologies 3/2014

MDA Technologies 3/2014

Machine Elements

Machine Elements Reliable safety brakes for flying cable camera systems Germany are the World Champions, and Mayr Power Transmission was present live at the final in Rio de Janeiro, as brakes secured the flying camera in the stadium above the football field. The cable camera systems allow millions of spectators to experience highly diverse large-scale events at close quarters in front of their televisions. The safety brakes ensure smooth operation of the devices. PDF Exciting scenes, spectacular goals and emotions running high – over the past weeks, impressive images from Brazil have delighted football fans all over the world. Yet the so-called “flying” cable cameras not only capture sensational images for viewers in front of television screens in football, but also in other sports such as handball, boxing or cross-country skiing, or in large TV productions and concerts. In the camera systems by spidercam, proven ROBA-stop-silenzio brakes by Mayr Power Transmission (Germany) ensure the maximum possible functionality and operating safety. They hold the camera safely in position, ensuring that it comes to a halt, and reliably prevent it dropping in case of a fault, for example, during a power failure. During the world championships in Brazil, a total of nine spidercam systems by the Austrian manufacturer based in Feistritz in Rosental were put into operation above the football fields. And these cable camera robots themselves are also winners: In 2014, they were awarded the Sports Technology Award in the category “Best Technology across Multiple Sports and Professional Sports.” Tried and tested high-tech cameras On this cable camera system, the camera carrier, the dolly, is supported by four cables. In addition, four electrical winches are mounted in each corner of the stadium. Starting at the winches, the cables mainly run via deflection rollers attached to the stadium roof and then converge at the camera suspension. Through controlled winding and unwinding of the winches, the dolly can be freely moved in all directions. In this process, two joysticks serve as control instruments, using which the pilot controls the winches. The tested cable camera robots 28 MDA Technologies 3/2014

ROBA-stop-silenzio dual-circuit brakes are indispensable for the smooth operation of camera systems are made of high-quality materials and are characterised by their maximum possible mobility and an uncomplicated design. Indispensable for smooth operation Safety is of great importance, especially when the camera runs above an audience and players. Therefore the ROBA-stop-silenzio brakes ensure that the cameras do not drop uncontrolled. The electromagnetic safety brakes are installed in the four winches and feature a spring applied functional principle. This means that the brakes close when the power is disconnected. In case of a power failure or an emergency stop, the brakes therefore provide reliable hold for the cameras in any position. Two independently operating brake circuits ensure this high operating safety. The maintenance-free and easy-to-install brakes are the quietest safety brakes on the market – even after several hundred thousand switching operations. They fulfil the stringent requirements of the BGV C1 professional association regulations. Feature photo: Gert Steinthaler www.mayr.com Company name: Mayr Brands: Mauerstetten, Germany Established: 1897 Employees: more than 800 Products: torque limiters, safety brakes, shaft couplings About MDA Technologies 3/2014 29

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