Control method and system for blade lifting appliance

Abstract

The invention provides a control method and system for a blade lifting appliance. The control method for the blade lifting appliance comprises the steps of in response to determining that the angle difference between a first inclination angle and a first target inclination angle of the blade lifting appliance exceeds a first angle difference range based on first inclination angle information received from a first inclination angle sensor, controlling a telescopic rod of a telescopic mechanism to move to drive a suspender to move along a guide rail to reduce angle difference; and in response todetermining that the angle difference between the first inclination angle of the blade lifting appliance and the first target inclination angle is kept within the first angle difference range based on the first inclination angle information received from the first inclination angle sensor, controlling the telescopic rod of the telescopic mechanism to stop moving, so that the flange surface of a blade root of a first blade clamped by a blade clamp is approximately parallel to the preset flange surface of a hub for mounting the first blade. Based on the blade lifting appliance provided by the invention, the telescopic rod of the telescopic mechanism can be controlled to move according to the detected inclination angle information of the lifting appliance, so that high-precision micro-angleadjustment of the blade lifting appliance is realized.

Description

technical field [0001] The invention relates to the technical field of wind power generation. More specifically, the present invention relates to a control method and system for a blade spreader. Background technique [0002] With the continuous increase of the single unit capacity of wind turbines, the size of the blades of wind turbines is also gradually increasing. For example, the blades of offshore wind turbines have exceeded 90 meters in length and weighed more than 35 tons. Accurately attaching to the hub is also increasingly difficult. [0003] With the rapid development of my country's offshore wind power technology. Offshore wind power has also been rapidly developed and the technology is becoming more and more mature. Different models of high-power 8MW and 10MW new models are constantly being launched. Therefore, the hoisting process of wind turbines is constantly improving. The hoisting required for the installation of wind turbines Equipment and hoisting time...

AI Technical Summary

Problems solved by technology

[0004] In the existing process of hoisting blades, when the blade rotation angle is close to the required blade angle, there may be too many or insufficient angles, and it is impossible to accurately adjust the blade angle to the required angle in a short time, and it takes a long time. It takes one adjustment to get to the desired angle, and it is related to the experience of the spreader operator. The control is relatively difficult, which leads to a long installation process and poor versatility.

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