New technology of “Tower Crane” blower hoisting researched and developed by Vestas
Wind energy is to help mankind to achieve carbon dioxide emissions, reduce dependence on fossil fuels an important resource. To make better use of wind energy, wind turbines is the foundation. General towering wind turbines, the maintenance of its failure is "extremely difficult." Recently, a number of wind energy companies are trying to solve the wind turbine mechanical failure is difficult to repair the problem.
Leakage of the generator, gearbox impaired, broken wind turbine rotor and so will work in reduced efficiency. Right now, the top parts of turbine assembly is generally achieved by large mobile cranes, heavy machine while the machine is also responsible for the maintenance of these turbines services. "Vestas Wind Systems," said Christensen, product manager, because the rapid expansion of wind power, wind power technology and the people of the growing interest in making use of the crane resources more and more tense, there has been shortage . He said: "Maybe sometimes have get ready for repair parts, but have to wait until a crane can be used a few months." If the wind turbine maintenance required from the ground to the top 70 to 105 meters, then you need the most heavily used crane to be repaired, because the height of the wind is very strong. But want to move back and forth of these cranes is very difficult.
Vestas is developing a "tower crane" to solve this problem. "Tower crane" is in the experimental stage, it is 10 meters long, 2.9 meters high, 3.3 meters wide, weighs 53 tons. Its design principle is: Department of tower cranes in the ropes hanging from the top compartment, the cable from the addition of a small crane traction. Top compartment with turbine generators, and gearboxes. Through this cable, tower crane can be sent to the turbines at the top. Specific "tower crane" climb process is as follows: First, the top compartment of the cable down to the ground, with a block and tackle attached to the top of them sent to the turbine to form a "top-tank traction system" (NAS). Subsequently, the NAS is connected with the top compartment can put a lot of cable, distributed "tower crane" the weight to more easily sent to the top of the latter.
When the crane to reach the top after the turbine, it will tighten the four claws, grab the main stem turbines, it is like a giant robot hand, so that more fixed cranes in the air, 100 meters from the ground that it winds of up to Altitude of 15 meters per second, can work freely.
Vestas next goal is to develop fine-tuning can be done only with the different companies are compatible next-generation turbines, "tower crane. " Within a year the company hopes that the company launched called "V112" 3-megawatt turbines at the same time to produce such a crane model. V112's components will be more important, you need a bigger crane arm strength.
Vestas "tower crane " is not the only wind turbine crane technology breakthroughs. Scottish Enterprise Energy Technology Media Center (ITI) had invested $ 3,200,000 for the development of a "gorilla" of the wind turbine access system. ITI's "gorilla" wind turbine-channel system formed by the two friction clamps, connected by hydraulic structures, allowing crane like caterpillars crawling along the turbines up and down, like a gorilla Pashu same. ITI has been in a normal wind turbine size 1 / 5 of the model to test the orangutans channel system, is now looking for partners to commercialize the promotion of crawling robot.
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