hydraulically lower their cargo beds down to 10 centime ters 4 inches of ground clearance and will then edge their way forward underneath the bridge However the trailers must not bottom out on any bumps in the road surface under any circumstances plus the overhead clearance is only about the breadth of a hand too Logistics with diplomacy The haulers route scouts are resourceful no matter what and discuss the routes they ve reconnoitered with transport manager Dufresne There s not a lot I need to tell my hauling colleagues they re absolute pros I can rely on their planning 100 percent Instead the part of the Senvion logistician is to discuss the project with all the other stakeholders approving authorities private highway operators and above all the people on the ground At that time he s a diplomat first and foremost having to alleviate the concerns of mayors and county of ficials that the special transports won t cause any dam age Plus he has to explain why the journey of the giants has to be routed through their region in particular even 1 148 million people are employed in the wind energy sector worldwide compared to 500 000 in 2009 In total the sector generates annual sales of 94 billion euros However due to falling prices and growing competitive pressures especially from Asia many manufacturers are fighting for survival With sales of ten billion euros 2018 Vestas Wind Systems A S from Denmark is the world market leader followed in second place by Siemens Gamesa and the Chinese manufacturer Goldwind in third Sources IRENA REN21 GWEC Transmission rotor shaft generator yaw control blade adjustment Schaeffler has been producing bearing solutions analysis and monitoring tools for wind turbines for more than 30 years Predictive mon itoring is a recent addition to the portfolio Together with Bonfiglioli the market leader in transmissions for yaw control and blade adjustment Schaeffler has developed a compact Industry 4 0 package It com bines the measuring systems SmartCheck on the housing and TorqueSense on the shaft into a new condition and torque monitoring system It not only detects and limits peak loads and their frequency but also recognizes impending failures at an early stage due to the SmartCheck vibration diagnostics The re sulting major advantage repairs can be planned and performed on days with little or no wind SCHAEFFLER ENHANCES WIND EFFICIENCY though the wind farm will be established at a remote lo cation We can never take the shortest possible route To cover a distance of one kilometer the convoys often travel ten 15 or more kilometers on the road A bridge with a sufficient load rating may be located five kilome ters farther to the east but then an underpass that s too low may have to be given a wide berth So one kilome ter is added to another and approvals must be obtained again and again explains Dufresne In spite of extensive preparations and ample ex perience there s always a chance of unforeseen things to happen Once Dufresne relates there was an unan nounced construction site the trucks concerned were stuck for three weeks Even driving forward is extreme ly challenging but backing up is practically impossible with a 60 meter 200 foot trailer Systems are becoming larger and larger The further the development of ever more pow erful wind turbines progresses the more difficult the 65 64

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