The hottest Vestas climbing crane

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Vestas' climbing crane

the tower crane with four big claws invented by Vestas company

wind energy is an important resource to help mankind reduce carbon dioxide emissions and reduce dependence on fossil fuels. To make better use of wind energy, wind turbines are the foundation. Wind turbines are generally towering, and its failure maintenance is even more difficult. Recently, some wind energy companies are trying to solve the difficult problem of mechanical failure of wind turbines

the working efficiency of wind turbine will be reduced by the leaked generator, the damaged gearbox and the broken rotor. At present, the assembly of components at the top end of turbines is generally realized by large mobile cranes, and these cranes are also responsible for the maintenance services of these turbines. Christensen, product manager of Vestas wind power system, said that due to the rapid expansion of wind power generation, 2. The expansion of the original stretching device and its clamp, as well as the increasing interest in wind power generation technology, the available crane resources are becoming increasingly tight, resulting in a situation of supply exceeding demand. He said: maybe sometimes the parts needed for maintenance are ready, but it takes months to wait until a crane is available. If the top end of the wind turbine to be repaired is 70 to 105 meters above the ground, the heaviest crane is needed for maintenance, because the wind at that height is very strong. But it is very difficult to move these cranes back and forth

Vestas is developing tower cranes to solve this problem. The tower crane is in the experimental stage. It is 10 meters long, 2.9 meters high, 3.3 meters wide and weighs 53 tons. Its design principle is: the tower crane is tied to the cable hanging from the top cabin, and the cable is pulled by another small crane. The generator and gearbox of the turbine are installed in the top cabin. In this way, the tower crane can be sent to the top of the turbine by the cable proposed by yuxizhi, deputy to the National People's Congress, leader of Sinopec Maozhan refining and chemical 1 integration leading group, general manager of Maoming Petrochemical and general manager of China Science and technology refining and Chemical Corporation. The specific climbing process of the tower crane is as follows: first, the cable in the top cabin hangs to the ground, is connected with a pulley block, and is sent to the top of the turbine to form the top cabin traction system (NAS). Then, the NAS connected to the top cabin can put down many cables at the same time to distribute the weight of the tower crane, so that the latter can be sent to the top more easily

when the crane reaches the top of the turbine, it will tighten its four claws and grasp the main rod of the turbine. It is like a huge robot palm, which makes the crane more fixed at high altitude and allows it to work freely at an altitude of 100 meters above the ground and a wind speed of 15 meters per second

Vestas' next goal is to develop a next-generation tower crane that can be compatible with turbines approved by different companies even if biodegradable plastic bags are used for fine-tuning. The company hopes to produce such a crane model within one year, when the company launches a 3-mW turbine called v112. The components of v112 will be heavier and require a crane with greater rocker arm force

Vestas' tower crane is not the only new breakthrough in wind turbine crane technology. The Scottish industrial and Commercial Commission's energy technology intermediary (ITI) has invested $3.2 million to develop a wind turbine channel system called orangutan. ITI's orangutan wind turbine channel system is composed of two friction pliers, which are connected through a hydraulic structure, and can make the crane crawl like a caterpillar, up and down along the turbine, just like a orangutan climbing a tree. ITI has tested the orangutan channel system on a model with a size of 1/5 of a normal wind turbine, and is now looking for partners to commercialize the crawling robot

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