Compared with other industrial gearboxes, because the wind power gearbox is installed in a narrow cabin several tens or even more than one hundred meters above the ground, its volume and weight have an important impact on the cabin, tower, foundation, wind load of units, installation and maintenance costs, so it is particularly important to reduce the size and weight of the shape. 。
At the same time, because of the inconvenience of maintenance and the high cost of maintenance, the design life of gearbox is usually required to be 20 years, and the reliability requirement is extremely stringent. Because size, weight and reliability are often a pair of irreconcilable contradictions, the design and manufacture of wind power gearboxes are often in a dilemma. In the overall design stage, the transmission schemes should be compared and optimized with the goal of minimum volume and weight on the premise of meeting the requirements of reliability and working life; the structural design should be based on the premise of meeting the transmission power and space constraints, taking into account the simple structure, reliable operation and convenient maintenance as far as possible; and in each manufacturing process. All links should ensure product quality; the running state of gearbox (bearing temperature, vibration, oil temperature and quality changes, etc.) should be monitored in real time and maintained in accordance with the specifications.