Fixed shaft for 12MW fan

Abstract

The utility model relates to the technical field of wind energy motors, and discloses a fixed shaft for a 12MW fan, which comprises a shaft body, a connecting piece is arranged at the bottom of the shaft body, and the shaft body penetrates through a main shaft and the connecting piece to be connected onto a base of a cabin when being matched with the main shaft to be mounted; a plurality of connecting seats used for being connected with the stator are annularly arranged on the outer edge of the cambered surface portion of the connecting piece at equal intervals, and main shaft connecting holes matched and locked with the main shaft are formed in the connecting seats. According to the utility model, the shaft body is connected to the main shaft, so that the main shaft and the shaft body rotate together to drive the rotor of the fan to rotate. And the connecting piece is connected to the base of the cabin, so that the stability and the reliability of the whole fixed shaft for the 12MW fan are ensured. The connecting seat on the connecting piece can be connected with the stator, and the close connection between the stator and the main shaft is ensured through the main shaft connecting hole locked together with the main shaft, so that the normal operation of the fan is realized, and the stator is ensured not to fall off or loosen when the fan operates.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind energy motors, and in particular relates to a fixed shaft for a 12MW wind turbine. Background Art

[0002] Traditional fan fixed shafts usually consist of shaft bodies and bearings, which are fixed to the nacelle and connected to the main shaft through bearings. The shaft body is usually long and has bearings at both ends to support the weight of the shaft body and the torque during rotation. Traditional fan fixed shafts usually require regular maintenance and overhaul to maintain their stability and reliability.

[0003] Traditional fan fixed shafts require high maintenance costs because they require regular replacement of bearings and other parts. Due to wear and looseness of bearings and other parts, traditional fan fixed shafts are prone to failure, resulting in fan shutdown and performance degradation. Due to friction and looseness between bearings and other parts, traditional fan fixed shafts are prone to vibration and noise during operation, affecting the stability and reliability of the fan. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a fixed shaft for a 12MW wind turbine.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fixed shaft for a 12MW wind turbine, comprising a shaft body, a connecting piece is provided at the bottom of the shaft body, the shaft body passes through the main shaft when the main shaft is installed, and the connecting piece is connected to the base of the nacelle;

[0007] The outer edge of the arc surface of the connecting piece is provided with a plurality of connecting seats for connecting the stator arranged in an annular manner at equal distances, and the connecting seats are provided with a main shaft connecting hole which cooperates and locks with the main shaft.

[0008] Preferably, three mounting blocks are arranged in a circular pattern at equal distances on the inner wall surface of the shaft body away from the connecting piece at one end, and each mounting block is provided with a mounting hole. The arrangement of the mounting blocks and the mounting holes facilitates the docking of the shaft body with the rotor of the fan. By arranging the mounting blocks on the shaft body, the stability of the shaft body can be increased, making it more stable and reliable when the fan is running.

[0009] Preferably, the shaft body is evenly distributed with wiring holes for threading or maintenance, thereby improving the convenience of maintenance.

[0010] Preferably, the connecting seat is extended outward from the arc surface portion of the connecting piece, and a concave groove is provided on the connecting seat. The main shaft connecting hole is located in the concave groove, so that the main shaft can be easily inserted into the concave groove, thereby achieving a close fit between the main shaft and the connecting seat.

[0011] Preferably, a U-shaped groove is provided at the bottom of the connecting seat, so that the connecting seat can be conveniently positioned and fixed on the cabin base through the U-shaped groove.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are:

[0013] The fixed shaft of the 12MW wind turbine is connected to the main shaft through the shaft body, so that the main shaft and the shaft body rotate together, thereby driving the rotor of the wind turbine to rotate. The connector is connected to the base of the nacelle, ensuring the stability and reliability of the entire 12MW wind turbine fixed shaft, which is conducive to reducing noise. The connecting seat on the connector can be connected to the stator, and the main shaft connecting hole locked with the main shaft ensures a close connection between the stator and the main shaft, thereby realizing the normal operation of the wind turbine and ensuring that the stator will not fall off or loosen when the wind turbine is running.

[0014] The connection seat is extended outward from the arc surface of the connection piece, and a U-shaped groove is provided at the bottom, which can conveniently position and fix the connection seat on the cabin base, ensuring the stability and reliability of the connection seat. By providing a concave groove and a spindle connection hole on the connection seat, the spindle can be conveniently inserted into the concave groove to achieve a close fit between the spindle and the connection seat.

[0015] The wiring holes are set to facilitate the threading or maintenance work, and improve the maintenance efficiency and convenience of the fan. The overall design ensures the stable operation and high-efficiency output of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0017] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle.

[0018] In the figure: 1. shaft body; 2. connecting piece; 3. connecting seat; 4. main shaft connecting hole; 5. mounting block; 6. mounting hole; 7. wiring hole; 8. arc surface; 9. concave groove; 10. U-shaped groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The following is combined with Figure 1-2 To further explain this application in detail,

[0021] The embodiment of the present application discloses a fixed shaft for a 12MW wind turbine, comprising a shaft body 1, a connecting piece 2 is provided at the bottom of the shaft body 1, the shaft body 1 passes through the main shaft when the main shaft is installed, and the connecting piece 2 is connected to the base of the nacelle;

[0022] A plurality of connection seats 3 for connecting to the stator are arranged in an annular manner and equidistantly on the outer edge of the arc surface 8 of the connection member 2. The connection seats 3 are provided with main shaft connection holes 4 that are locked together with the main shaft.

[0023] The fixed shaft of the 12MW wind turbine is connected to the main shaft through the shaft body 1, so that the main shaft and the shaft body 1 rotate together, thereby driving the rotor of the wind turbine to rotate. The connector 2 is connected to the base of the nacelle, ensuring the stability and reliability of the fixed shaft of the entire 12MW wind turbine. The connecting seat 3 on the connector 2 can be connected to the stator, and the main shaft connecting hole 4 locked with the main shaft ensures a close connection between the stator and the main shaft, thereby achieving the normal operation of the wind turbine and ensuring that the stator will not fall off or loosen when the wind turbine is running.

[0024] The connecting piece 2 is connected to the base, and the shaft body 1 passes through the main shaft and is fixed together, which reduces looseness and friction between components, ensures the stability of the fan operation, and improves the reliability of the fan. A connecting seat 3 is provided on the connecting piece 2 to connect the stator, which facilitates installation and maintenance and reduces maintenance time and cost. The connecting seat 3 is connected to the stator to ensure a close connection between the two, reduce transmission energy loss, and improve the transmission efficiency and power output of the fan.

[0025] Three mounting blocks 5 are arranged in a circular pattern at equal distances on the inner wall surface of the shaft body 1 at one end away from the connecting piece 2, and each mounting block 5 is provided with a mounting hole 6. The arrangement of the mounting blocks 5 and the mounting holes 6 facilitates the docking of the shaft body 1 with the rotor of the fan. By arranging the mounting blocks 5 on the shaft body 1, the stability of the shaft body 1 can be increased, making it more stable and reliable when the fan is running.

[0026] The shaft body 1 is evenly provided with wiring holes 7 for threading or maintenance. By providing the wiring holes 7 on the shaft body 1, it is convenient to thread or repair the components on the shaft body 1, thereby reducing the maintenance workload and cost and improving the convenience of maintenance.

[0027] The connection seat 3 is extended outward from the arc surface 8 of the connection member 2, and a concave groove 9 is provided on the connection seat 3, and the spindle connection hole 4 is located in the concave groove 9. A U-shaped groove 10 is provided at the bottom of the connection seat 3.

[0028] Due to the design of the U-shaped groove 10, the connection seat 3 can be conveniently positioned and fixed on the cabin base through the U-shaped groove 10, thereby ensuring the stability and reliability of the connection seat 3. By providing the concave groove 9 and the spindle connecting hole 4 on the connection seat 3, the spindle can be conveniently inserted into the concave groove 9, thereby achieving a close fit between the spindle and the connection seat 3.

[0029] The fixed shaft of the 12MW wind turbine is connected to the main shaft through the shaft body 1, so that the main shaft and the shaft body 1 rotate together, thereby driving the rotor of the wind turbine to rotate. The fixed shaft is used for 12MW wind turbine power generation. The connector 2 is connected to the base of the nacelle, ensuring the stability and reliability of the fixed shaft of the entire 12MW wind turbine. The connecting seat 3 on the connector 2 can be connected to the stator, and the close connection between the stator and the main shaft is ensured through the main shaft connecting hole 4 locked with the main shaft. This design reduces the looseness and friction between the components, improves the reliability of the wind turbine, and facilitates installation and maintenance work, reducing the time and cost of maintenance.

[0030] Therefore, the above-mentioned fixed shaft for a 12MW wind turbine has higher stability and reliability than a traditional fixed shaft for a wind turbine, reduces maintenance costs, and improves the performance and efficiency of the wind turbine.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed shaft for a 12MW wind turbine, comprising a shaft body (1), characterized in that: A connecting piece (2) is provided at the bottom of the shaft body (1); when the shaft body (1) is installed in conjunction with the main shaft, the connecting piece (2) passes through the main shaft; and the connecting piece (2) is connected to the base of the cabin; A plurality of connection seats (3) for connecting to the stator are arranged in an annular manner and at equal distances on the outer edge of the arc surface (8) of the connection member (2); and a main shaft connection hole (4) which cooperates and locks with the main shaft is provided on the connection seat (3).

2. A fixed shaft for a 12MW wind turbine according to claim 1, characterized in that: Three mounting blocks (5) are arranged in an annular pattern at equal distances on the inner wall surface of one end of the shaft body (1) away from the connecting piece (2), and each mounting block (5) is provided with a mounting hole (6).

3. A fixed shaft for a 12MW wind turbine according to claim 1, characterized in that: The shaft body (1) is evenly distributed with wiring holes (7) for threading or maintenance.

4. A fixed shaft for a 12MW wind turbine according to claim 1, characterized in that: The connecting seat (3) is extended outward from the arc surface (8) of the connecting piece (2), a concave groove (9) is provided on the connecting seat (3), and the main shaft connecting hole (4) is located in the concave groove (9).

5. A fixed shaft for a 12MW wind turbine according to claim 4, characterized in that: A U-shaped groove (10) is provided at the bottom of the connecting seat (3).

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