CN202402223U - Wheel hub overhauling structure of megawatt level wind generating set - Google Patents

Abstract

The utility model discloses a wheel hub overhauling structure of a megawatt level wind generating set, and belongs to the technical field of the wind generating set. A part of a wheel hub close to a main shaft is provided with a first hanging hole; a variable pitch propeller speed reducer is arranged in vertical direction of the first hanging hole; the front ends of a flow guide housing and a cabin housing are provided with a second hanging hole and a hanging port corresponding to a variable pitch propeller system respectively; and a crane is arranged in a cabin. According to the wheel hub overhauling structure, by arranging the hanging holes or the hanging ports at the front ends of the wheel hub, the flow guide housing and the cabin housing, lifting is performed through a crane in the cabin when the wheel hub overhauling structure system fails. The problem of difficulty in replacement during failure of a megawatt level wind mill wheel hub component is solved. The wheel hub overhauling structure has higher efficiency and safety during trouble removal of a wind mill.

Description

A wheel hub maintenance structure of a megawatt wind power generating set

technical field

The utility model belongs to the technical field of generating sets, in particular to a wheel hub maintenance structure of a megawatt-level wind generating set.

technical background

With the rapid development of wind power generation technology, the power of wind turbines has also developed from low power to megawatt level. At present, most of the units in the market are 1MW to 3MW. With the development of offshore wind power, many larger Power units are also in the research and development plans of various wind power companies. As the power of the unit increases, the specifications of the components will also become larger, which brings many problems to the maintenance of the wind turbine unit. A single component has reached several tons, and it cannot be moved, installed and replaced by manpower alone. At present, the maintenance of wind turbines is usually equipped with a small crane in the nacelle from the ground to the top of the tower, which is convenient for the replacement of various parts of the nacelle. However, due to the special structure and transmission of the wind turbine hub, the passage from the hub to the nacelle is very limited. If a component (such as a pitch motor, a gearbox, etc.) fails, it is usually necessary to either hoist the entire hub to replace the faulty part or manually transfer the faulty part to the nacelle. Either way will cost a lot of manpower, material resources and time, and seriously affect work efficiency.

Contents of the invention

Aiming at the above-mentioned technical problems, the utility model provides a megawatt-level wind power generating set wheel hub maintenance structure, which is convenient for replacing the wheel hub faulty parts.

In order to achieve the above object, the technical solution adopted by the utility model is:

In the utility model, a first hoisting hole is opened at the part where the hub is close to the main shaft, the pitch reduction reducer is arranged in the vertical direction of the first hoisting hole, and the corresponding pitch system at the front end of the guide cover and the nacelle cover is respectively provided with a second hoisting hole And the hoisting port, the crane is set in the engine room.

The beneficial effects of the utility model are:

The utility model is provided with hoisting holes or hoisting openings at the front ends of the wheel hub, the shroud and the nacelle cover, and when the pitch-changing system breaks down, it can be hoisted by a crane in the nacelle. The problem that it is difficult to replace the hub parts of the megawatt-level wind turbine when it fails is solved. More efficient and safer in fan troubleshooting.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. The first hoisting hole, 2. The pitch control system, 3. The hub, 4. The crane, 5. The engine room, 6. The shroud, 7. The hoisting port, 8. The second hoisting hole.

Detailed ways

The utility model is described in detail below according to the accompanying drawings and embodiments.

Embodiment: As shown in Figure 1, the utility model has a first hoisting hole 1 at the position close to the main shaft of the hub 3, and the pitch reduction reducer is arranged in the vertical direction of the first hoisting hole 1, and the wind deflector 6 and the engine room The pitch control system 2 at the front end of the cover is respectively provided with a second hoisting hole 8 and a hoisting port 7 , and the crane 4 is arranged in the nacelle 5 . When the internal parts of the hub 3 fail and need to be replaced, open the hoisting opening 7 at the front end of the nacelle 5 and the second hoisting hole of the shroud 6 and the first hoisting hole 1 on the hub 3, deploy the crane 4, put down the hook and remove the faulty part. Fix it to the hook, then loosen the cables and fastening bolts of the faulty part, transfer it out of the hub 3 and put it in the nacelle 5, put it on the ground by the nacelle crane 4, and then follow the reverse steps to install the new part on the hub 3 Inside.

Claims (1)

1. a MW class wind turbine group wheel hub overhauls structure; It is characterized in that: have first erection opening near the position of main shaft at wheel hub; Variable pitch speed reducer is arranged on the Vertical direction of first erection opening; Be respectively equipped with second erection opening and lifting mouth at the corresponding pitch-controlled system with the engine room cover front end of air guide sleeve, crane is arranged in the cabin.

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