A coupling device for an AC asynchronous servo motor used in wind turbine pitch control.

Abstract

This invention discloses a coupling device for an AC asynchronous servo motor used in wind power pitch control, relating to the field of wind power generation. It includes an asynchronous motor, with a main coupling fixedly connected to the output end of the asynchronous motor. The outer surface of the main coupling is respectively provided with guide components and adjusting components. One end of the main coupling is fixedly connected to a connecting plate, and the outer surface of the connecting plate has a guide groove. This invention utilizes the guide groove on the outer surface of the connecting plate in cooperation with a sliding rod, allowing two arc-shaped plates to slide flexibly along the guide groove. When dealing with AC asynchronous servo motor output shafts and pitch control input shafts of different sizes, the positions of each component can be finely adjusted according to the actual size of the shaft, adjusting the position of the arc-shaped plates in the guide groove. Then, a locking pin passes through a perforated block and a perforated square plate for fixation. For motors with larger output shaft diameters, the arc-shaped plates are slid outwards to accommodate the installation requirements of larger shafts.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, specifically a coupling device for an AC asynchronous servo motor used in wind power pitch control. Background Technology

[0002] The wind turbine pitch reducer is installed in the hub of the wind turbine and is a gear reducer used to control the rotation of the wind turbine blades at a certain angle. When the reducer is working, while its transmission components rotate to transmit power, the entire reducer will rotate continuously 360 degrees with the wind turbine hub. It will be synchronized with the AC motor for transmission. In order to achieve efficient connection between the motor and the pitch mechanism and ensure stable and accurate power transmission, a coupling device is used.

[0003] In wind power generation, the pitch system plays a crucial role in optimizing wind energy capture and ensuring the safe and stable operation of wind turbines. As the power source for the pitch system, the quality of the connection between the AC asynchronous servo motor and the pitch mechanism directly affects the performance of the pitch system. However, existing coupling devices present numerous problems when applied to AC asynchronous servo motors used in wind turbine pitch control. In the wind power sector, the output shaft dimensions of AC asynchronous servo motors vary significantly among different models and specifications of wind turbine generators. For example, the input shaft dimensions of the pitch mechanism also differ. Existing coupling devices are typically designed for specific sizes of motor output shafts and pitch mechanism input shafts. If a size mismatch occurs, they cannot be used directly. Because existing coupling devices cannot adapt to different sized connections, significant time and costs must be spent redesigning, manufacturing, and installing coupling devices when upgrading or replacing wind turbines. This not only increases modification costs but may also lead to prolonged turbine downtime, impacting power generation efficiency. Furthermore, their poor versatility prevents them from adapting to the size and installation requirements of new equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a coupling device for an AC asynchronous servo motor used in wind turbine pitch control, so as to solve the problems mentioned in the background art and overcome its technical defects.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a coupling device for an AC asynchronous servo motor for wind power pitch control, including an asynchronous motor, a main coupling fixedly connected to the output end of the asynchronous motor, a guide component and an adjusting component respectively provided on the outer surface of the main coupling, a connecting plate fixedly connected to one end of the main coupling, a guide groove opened on the outer surface of the connecting plate, two sliding rods slidably connected inside the guide groove, a slotted block fixedly connected to the outer surface of each sliding rod, an arc-shaped disk fixedly connected to the outer surface of each sliding rod, multiple mounting holes opened on the outer surface of each arc-shaped disk and the outer surface of the connecting plate, and a locking pin provided inside each slotted block.

[0006] As a further embodiment of this utility model: the adjusting component includes a fixing plate installed on the outer surface of the main coupling. Two connecting frames are fixedly connected to the outer surface of the fixing plate. A lead screw is rotatably connected to the inner wall of each connecting frame through a bearing. A threaded sleeve is threaded to the outer surface of each lead screw. A transmission seat is fixedly connected to the outer surface of each threaded sleeve. A perforated square plate is fixedly connected to the outer surface of each transmission seat. The diameter of the perforated square plate matches the size of the locking pin. An adjusting handle is fixedly connected to one end of each lead screw.

[0007] As a further improvement of this utility model: two long support rods are fixedly connected to the outer surface of the fixing plate, and each of the long support rods is slidably connected to the transmission seat.

[0008] As a further improvement of this utility model, a limiting block is fixedly connected to one end of each of the long support rods.

[0009] As a further embodiment of this utility model: the guide assembly includes two arc-shaped plates, each of which has a sliding member fixedly connected to its inner wall, and the sliding member is slidably connected to the outer surface of the main coupling. The outer surfaces of the two arc-shaped plates are jointly provided with two long screws.

[0010] As a further improvement of this utility model: each of the arc-shaped plates has an L-shaped seat fixedly connected to its outer surface, and each of the L-shaped seats has an insertion hole on its outer surface.

[0011] As a further improvement of this utility model: two limiting rods are fixedly connected to the outer surface of the fixing plate, and the limiting rods are located between the guide component and the adjusting component.

[0012] As a further embodiment of this utility model: a mounting base is fixedly connected to the outer surface of the asynchronous motor, and two side connecting plates are fixedly connected to the outer surface of the mounting base.

[0013] Compared with the prior art, the beneficial effects of this utility model include:

[0014] The guide groove on the outer surface of the connecting plate, in conjunction with the sliding rod, allows the two arc-shaped plates to slide flexibly along the guide groove. When dealing with output shafts of AC asynchronous servo motors and input shafts of pitch mechanisms of different sizes, the positions of each component can be finely adjusted according to the actual size of the shaft, and the position of the arc-shaped plates in the guide groove can be adjusted. For example, for motors with smaller output shaft diameters, the two arc-shaped plates can be slid inwards to align the mounting holes on the arc-shaped plates and the connecting plate with the mounting holes of the smaller shaft. Then, they can be fixed by passing a locking pin through the slotted block and the perforated square plate. For motors with larger output shaft diameters, the arc-shaped plates can be slid outwards to accommodate the installation requirements of the larger shaft. This flexible adjustment method allows the coupling device to adapt to various shafts of different sizes, greatly improving its versatility. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0016] Figure 1 The schematic diagram shows a frontal perspective view of a three-dimensional structure according to one embodiment of the present invention;

[0017] Figure 2 The schematic diagram shows a structural schematic of a guide assembly according to one embodiment of the present invention;

[0018] Figure 3 The schematic diagram shows a structural diagram of a connecting disk and an arc-shaped disk according to one embodiment of the present invention;

[0019] Figure 4 The schematic diagram shows a side view of the adjusting member according to one embodiment of the present invention;

[0020] Figure 5 The schematic diagram shows a side view of a connecting disk according to one embodiment of the present invention;

[0021] The following are the labeling elements in the diagram: 1. Asynchronous motor; 2. Mounting base; 3. Side connecting plate; 4. Main coupling; 5. Guide assembly; 501. Arc plate; 502. Sliding component; 503. Long screw; 504. L-shaped seat; 505. Insertion hole; 6. Adjusting component; 601. Fixing plate; 602. Connecting frame; 603. Lead screw; 604. Adjusting handle; 605. Screw sleeve; 606. Transmission seat; 607. Square plate with holes; 7. Connecting disc; 8. Limiting stop bar; 9. Guide groove; 10. Sliding rod; 11. Arc disc; 12. Mounting hole; 13. With opening block; 14. Locking long nail; 15. Long support rod; 16. Limiting block. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] According to one embodiment of the present invention, in conjunction with the appendix Figures 1-5 As shown.

[0024] A coupling device for an AC asynchronous servo motor used in wind turbine pitch control includes an asynchronous motor 1. A main coupling 4 is fixedly connected to the output end of the asynchronous motor 1. Guide components 5 and adjusting components 6 are respectively provided on the outer surface of the main coupling 4. A connecting plate 7 is fixedly connected to one end of the main coupling 4. A guide groove 9 is formed on the outer surface of the connecting plate 7. Two sliding rods 10 are slidably connected inside the guide groove 9. A slotted block 13 is fixedly connected to the outer surface of each sliding rod 10. An arc-shaped disk 11 is fixedly connected to the outer surface of each sliding rod 10. Multiple mounting holes 12 are formed on the outer surface of each arc-shaped disk 11 and the outer surface of the connecting plate 7. Each of the slotted blocks 13 has a locking pin 14 inside. The guide groove 9 on the outer surface of the connecting plate 7 cooperates with the sliding rod 10, allowing the two arc-shaped plates 11 to slide flexibly along the guide groove 9. By adjusting the position of the arc-shaped plates 11, it can adapt to connection objects of different sizes and installation requirements. For example, when connecting pitch mechanisms of different specifications, the arc-shaped plates 11 can be slid according to the position of the mounting hole 12 of the pitch mechanism, so that the mounting hole 12 on the arc-shaped plates 11 and the connecting plate 7 is aligned with the mounting hole of the pitch mechanism. Then, the locking pin 14 is used to pass through the slotted blocks 13 and the perforated square plate 607 for fixation, which greatly simplifies the installation process.

[0025] In this embodiment, the adjusting component 6 includes a fixing plate 601 mounted on the outer surface of the main coupling 4. Two connecting brackets 602 are fixedly connected to the outer surface of the fixing plate 601. A lead screw 603 is rotatably connected to the inner wall of each connecting bracket 602 via a bearing. A threaded sleeve 605 is threaded onto the outer surface of each lead screw 603. A transmission seat 606 is fixedly connected to the outer surface of each threaded sleeve 605. A perforated square plate 607 is fixedly connected to the outer surface of each transmission seat 606, and the diameter of the perforated square plate 607 matches the size of the locking pin 14. An adjusting handle 604 is fixedly connected to one end of each lead screw 603. The adjusting component 6 comprises the fixing plate 601, connecting brackets 602, lead screw 603, threaded sleeve 605, transmission seat 606, perforated square plate 607, and adjusting handle 604. The lever 604 together form a highly efficient adjustment mechanism. By rotating the adjustment lever 604, the operator drives the lead screw 603 to rotate, causing the lead sleeve 605 to move along the lead screw 603, which in turn drives the transmission seat 606 and the perforated square plate 607 to move, thereby fixing the tightness of the coupling connection. This facilitates connection and fixation with the slotted block 13, making adjustment operations easier and installation more secure. Two long support rods 15 are fixedly connected to the outer surface of the fixing plate 601. Each long support rod 15 is slidably connected to the transmission seat 606, allowing the transmission seat 606 to slide along the long support rods 15, improving its movement stability. One end of each long support rod 15 is fixedly connected to a limit block 16, which can limit the position of the transmission seat 606 and prevent dislocation.

[0026] The guide assembly 5 includes two arc-shaped plates 501. Each arc-shaped plate 501 has a sliding member 502 fixedly connected to its inner wall, and the sliding member 502 is slidably connected to the outer surface of the main coupling 4. The outer surfaces of the two arc-shaped plates 501 are jointly provided with two long screws 503. Each arc-shaped plate 501 has an L-shaped seat 504 fixedly connected to its outer surface. Each L-shaped seat 504 has an insertion hole 505 on its outer surface. The two arc-shaped plates 501 and the two sliding members 502 can be connected to the main coupling 4 using the long screws 503 and fixed firmly through the L-shaped seat 504 and the insertion hole 505. This allows the main coupling 4 to rotate within the sliding member 502, ensuring stability.

[0027] Two limiting rods 8 are fixedly connected to the outer surface of the fixing plate 601, and the limiting rods 8 are located between the guide component 5 and the adjusting component 6. The two limiting rods 8 fixedly connected to the outer surface of the fixing plate 601 are located between the guide component 5 and the adjusting component 6, which can prevent the adjusting component 6 and the guide component 5 from moving excessively and protect the structural integrity of the coupling device. The outer surface of the asynchronous motor 1 is fixedly connected to the mounting base 2, and the outer surface of the mounting base 2 is fixedly connected to two side connecting plates 3. The mounting base 2 and the two side connecting plates 3 on it facilitate the installation and fixing of the motor on equipment such as fans. The mounting base 2 and the side connecting plates 3 provide a stable installation interface, simplify the installation process of the motor, and improve the installation efficiency.

[0028] Working principle: When installing couplings of different sizes, the sliding rod 10 can be pulled to slide in the guide groove 9 according to its size. When the sliding rod 10 moves, it will move the arc-shaped disk 11 and the slotted block 13. After the two arc-shaped disks 11 are moved to the appropriate position, the adjusting handle 604 drives the lead screw 603 to rotate, so that it moves the threaded sleeve 605 and the transmission seat 606 under the action of the thread. When the transmission seat 606 moves, it can slide along the long support rod 15, and at the same time, it moves the perforated square plate 607 to the position aligned with the slotted block 13. Then, the locking pin 14 is inserted into the slotted block 13 and the perforated square plate 607 in sequence to fix their positions. Then, the coupling to be installed is connected to the connecting plate 7 and the arc-shaped disk 11. It can be installed firmly with screws and other tools. Finally, the asynchronous motor 1 can be used to run the installed shaft.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A coupling device for an AC asynchronous servo motor used in wind turbine pitch control, characterized in that, The system includes an asynchronous motor (1), the output end of which is fixedly connected to a main coupling (4). The outer surface of the main coupling (4) is provided with a guide assembly (5) and an adjusting component (6). One end of the main coupling (4) is fixedly connected to a connecting plate (7). The outer surface of the connecting plate (7) is provided with a guide groove (9). The inside of the guide groove (9) is slidably connected to two sliding rods (10). The outer surface of each sliding rod (10) is fixedly connected to a slotted block (13). The outer surface of each sliding rod (10) is fixedly connected to an arc-shaped disc (11). The outer surface of each arc-shaped disc (11) and the outer surface of the connecting plate (7) are provided with multiple mounting holes (12). The inside of each slotted block (13) is provided with a locking pin (14).

2. The coupling device for an AC asynchronous servo motor used in wind turbine pitch control according to claim 1, characterized in that, The adjusting component (6) includes a fixing plate (601) installed on the outer surface of the main coupling (4). Two connecting brackets (602) are fixedly connected to the outer surface of the fixing plate (601). The inner wall of each connecting bracket (602) is rotatably connected to a lead screw (603) through a bearing. The outer surface of each lead screw (603) is threaded with a threaded sleeve (605). The outer surface of each threaded sleeve (605) is fixedly connected with a transmission seat (606). The outer surface of each transmission seat (606) is fixedly connected with a perforated square plate (607). The hole diameter of the perforated square plate (607) matches the size of the locking pin (14). One end of each lead screw (603) is fixedly connected with an adjusting handle (604).

3. The coupling device for an AC asynchronous servo motor used in wind turbine pitch control according to claim 2, characterized in that, Two long support rods (15) are fixedly connected to the outer surface of the fixed plate (601), and each of the long support rods (15) is slidably connected to the transmission seat (606).

4. The coupling device for an AC asynchronous servo motor for wind turbine pitch control according to claim 3, characterized in that, A limit block (16) is fixedly connected to one end of each of the long support rods (15).

5. The coupling device for an AC asynchronous servo motor used in wind turbine pitch control according to claim 1, characterized in that, The guide assembly (5) includes two arc-shaped plates (501), and each arc-shaped plate (501) has a sliding member (502) fixedly connected to its inner wall. The sliding member (502) is slidably connected to the outer surface of the main coupling (4). The outer surfaces of the two arc-shaped plates (501) are provided with two long screws (503).

6. The coupling device for an AC asynchronous servo motor for wind turbine pitch control according to claim 5, characterized in that, Each of the arc-shaped plates (501) has an L-shaped seat (504) fixedly connected to its outer surface, and each of the L-shaped seats (504) has an insertion hole (505) on its outer surface.

7. The coupling device for an AC asynchronous servo motor for wind turbine pitch control according to claim 2, characterized in that, Two limiting rods (8) are fixedly connected to the outer surface of the fixing plate (601), and the limiting rods (8) are located between the guide assembly (5) and the adjusting member (6).

8. The coupling device for an AC asynchronous servo motor used in wind turbine pitch control according to claim 7, characterized in that, The outer surface of the asynchronous motor (1) is fixedly connected to a mounting base (2), and the outer surface of the mounting base (2) is fixedly connected to two side connecting plates (3).

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