Large wind power generation unit and blade installation structure thereof

Abstract

The invention discloses a large wind power generation unit and a blade installation structure thereof. The blade installation structure comprises a blade, a hub, a pitch-variable bearing and a gear. The blade comprises a blade root. A web is arranged on the hub. The pitch-variable bearing comprises an inner ring and an outer ring which are matched through rolling pieces. The outer ring is fixedly connected with the hub. Gear hobs arranged around the whole inner wall of the inner ring are integrally arranged on the inner wall of the inner ring. The gear is meshed with the gear hobs and driven by a drive device. The installation structure further comprises a connection flange, multiple sets of hanging lugs, multiple connection plates and multiple hydraulic cylinders. The connection flange is arranged between the inner ring and the blade root in a clamped mode. All the hanging lugs are arranged on the blade root and distributed in a central symmetry mode. Each connection plate, the corresponding hydraulic cylinder and the corresponding set of hanging lugs correspond to one another. By means of the combined arrangement, strength and operation reliability are improved, and therefore adjustment of the gear does not need to be conducted on the ground, fine adjustment is achieved, work efficiency is improved, cost and labor intensity are reduced, and operation safety is improved.

Description

technical field [0001] The present invention generally relates to a large-scale wind power generating set, and specifically relates to a blade installation structure of a large-scale wind power generating set. Background technique [0002] Wind energy is the fastest-growing clean energy among renewable energy sources, and it is also a renewable energy source with large-scale development and commercial development prospects. Wind power generators are the main way to utilize wind energy. Especially in recent years, megawatt-level wind power generation units It has developed rapidly and has become a mainstream product in the market. [0003] The pitch system is one of the core components of the megawatt wind turbine, and plays a very important role in the safe, stable and efficient operation of the turbine. At present, the pitch bearing adopts the slewing bearing, which is installed between the blade and the hub. The pitch bearing is divided into an inner ring and an outer rin...

AI Technical Summary

Problems solved by technology

As we all know, the use of cranes is expensive, and a lot of manpower and material resources are wasted in the hoisting and dismantling process, which also affects the efficiency of wind farms

In addition, in the process of disassembly and installation, there are still huge potential safety hazards, which are not only inefficient but also poor in reliability.

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