A growing yaw motor device

Abstract

The utility model discloses a kind of growth type yaw motor devices, including yaw motor;The rear end of yaw motor is connected with encoder by extension assembly;To receive the position signal and rotational speed information of the yaw motor in real time;There is a fan cover fixedly arranged at the input end of the encoder, and located at the outer periphery of the extension assembly, and the fan cover is parallelly arranged with the rear end motor shaft.The beneficial effects of the utility model are embodied in that the axis length of yaw motor is increased by lengthening shaft, and then the effective connection of encoder is realized by coupling, so that the encoder can receive the position and rotational speed of yaw motor in real time, and accurate feedback signal is provided for yaw motor, so as to realize closed-loop control.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, and in particular relates to a growth-type yaw motor device. Background Technology

[0002] The yaw system of large and medium-sized wind turbines generally includes a wind vane, yaw motor, yaw planetary gear reducer, yaw brake, and a large gear on the rotating body. The wind vane, acting as a sensing element, transmits changes in wind direction as an electrical signal to the processor in the control circuit of the yaw motor. After comparison, the processor sends a clockwise or counterclockwise yaw command to the yaw motor. To reduce the gyroscopic torque during yaw, the yaw motor speed is reduced by a coaxially connected reducer, and the yaw torque is applied to the large gear on the rotating body, causing the wind turbine to yaw against the wind. Once the alignment with the wind is complete, the wind vane loses its electrical signal, the yaw motor stops working, and the yaw process ends.

[0003] The structure of existing yaw motors can be referenced in patent CN210201648U, "A Yaw Motor". Existing technologies, including this patent, lack an encoder, making it impossible to accurately measure the motor's position and speed; they can only collect information on the forward and reverse rotation of the yaw motor. However, the encoder must be located at the rear end of the yaw motor shaft. Since the yaw motor shaft has a fixed length, its front end must be used to install components such as the geared motor, coupling, and braking system. Therefore, the length left at the front end of the motor shaft is relatively long, resulting in insufficient space at the rear end for installing components such as the fan and encoder. This leads to the inability to accurately measure the motor's position and speed during use, maintenance, or repair.

[0004] To address the aforementioned problems, designing a growth-type yaw motor device is an important technical issue that those skilled in the art need to solve. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a growth-type yaw motor device.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An extended yaw motor device includes a yaw motor; the rear end of the yaw motor is connected to an encoder via an extension component to receive the position signal and speed information of the yaw motor in real time; a fan cover is fixedly disposed at the input end of the encoder and located on the outer periphery of the extension component, and the fan cover is arranged parallel to the rear motor shaft.

[0008] Preferably, the extension assembly includes an extension shaft and a coupling; the extension shaft is fixedly connected to the rear motor shaft, and the output end of the extension shaft is connected to the coupling; the output end of the coupling is connected to the input end of the encoder.

[0009] Preferably, the input end of the extended shaft is inserted into the rear motor shaft and connected to the rear motor shaft by bolts.

[0010] Preferably, the main body of the extended shaft has a mounting groove for accommodating the key pin; the rear motor shaft has a notch, and the bottom of the key pin is located within the notch.

[0011] Preferably, the coupling is a figure-eight coupling.

[0012] Preferably, the input shaft of the encoder passes through the bracket and is connected to the coupling, and the main body of the encoder is fixedly connected to the bracket; a set of meshes is formed on the fan cover; the bottom end of the bracket is fixedly connected to the fan cover by bolts passing through the mesh holes.

[0013] Preferably, the bracket is U-shaped and has handles on both sides.

[0014] The advantages of this utility model's technical solution are mainly reflected in:

[0015] By extending the shaft to increase the axial length of the yaw motor, and then using a coupling to achieve an effective connection between it and the encoder, the encoder can receive the position and speed of the yaw motor in real time, providing accurate feedback signals to the yaw motor, thereby realizing closed-loop control.

[0016] Using an 8-type coupling can reduce space occupation, withstand greater torque and impact force, achieve effective feedback of relevant information of the yaw motor, extend service life, and have good shock absorption effect, making installation and subsequent maintenance convenient;

[0017] Keying pins enable rapid positioning of the extended shaft and the rear motor shaft, facilitating quick calibration and bolt installation. Attached Figure Description

[0018] Figure 1 : A perspective view of a preferred embodiment of the present invention;

[0019] Figure 2 Cross-sectional view of a preferred embodiment of this utility model;

[0020] Figure 3 : Front view of a preferred embodiment of this utility model;

[0021] Figure 4 : Structural diagram of the yaw motor of the preferred embodiment of this utility model. Detailed Implementation

[0022] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0023] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0024] like Figure 1 or Figure 3 As shown, this utility model discloses an extended yaw motor device, including a yaw motor 1. The rear end of the yaw motor 1 is connected to an encoder 3 via an extension component 2 to receive the position signal and speed information of the yaw motor 1 in real time.

[0025] Further, such as Figure 1 As shown, the extension assembly 2 includes an extension shaft 21 and a coupling 22. The extension shaft 21 is fixedly connected to the rear motor shaft 11, and the output end of the extension shaft 21 is connected to the coupling 22. The output end of the coupling 22 is connected to the input end of the encoder 3. Preferably, the coupling 22 is a figure-eight type coupling. By increasing the shaft length of the yaw motor 1 and then effectively connecting it to the encoder via the coupling, the encoder can receive the position and speed of the yaw motor in real time, providing accurate feedback signals to the yaw motor and thus achieving closed-loop control.

[0026] Furthermore, the figure-eight coupling in this invention reduces space requirements, can withstand greater torque and impact, effectively provides feedback on the yaw motor 1, extends its service life, and has a good shock absorption effect, making installation and subsequent maintenance convenient.

[0027] like Figure 2As shown, the input end of the extended shaft 21 is inserted into the rear motor shaft 11 and connected to the rear motor shaft 11 by bolts. Furthermore, the main body of the extended shaft 21 has a mounting groove 210 for accommodating the key pin 102. A notch 10 is formed on the rear motor shaft 11, and the bottom of the key pin 102 is located within the notch 10. The key pin 102 enables rapid positioning of the extended shaft 21 and the rear motor shaft 11, facilitating quick calibration and bolt installation.

[0028] like Figures 2 to 3 As shown, the input shaft of the encoder 3 passes through the bracket 30 and is connected to the coupling 22, and the main body of the encoder 3 is fixedly connected to the bracket 30. Further, as... Figure 2 As shown, the bracket 30 is U-shaped, and handles 301 are provided on both sides for convenient and quick handling and assembly. Since the encoders 3 have different specifications, it is preferable to design the opening diameter or width at the top of the bracket 30 to be larger than the input shaft of the encoder 3. To ensure the stability of the encoder 3, a fixing plate is preferably provided at the input end of the encoder 3, and this fixing plate is screwed to the top surface of the bracket 30 to ensure the flatness and stability of the encoder installation. For different specifications of encoders 3, only different fixing plates need to be replaced, facilitating future replacement or maintenance of the extension assembly 2.

[0029] A fan cover 4 is fixedly mounted on the input end of the encoder 3 and located on the outer periphery of the extension assembly 2, and the fan cover 4 is arranged parallel to the rear motor shaft 11. Furthermore, the fan cover 4 is located at the bottom end of the bracket 30, and a set of mesh is formed on the fan cover 4; the bottom end of the bracket 30 is fixedly connected to the fan cover 4 by bolts passing through the mesh holes.

[0030] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A growth-type yaw motor device, comprising a yaw motor (1); characterized in that: The rear motor shaft (11) of the yaw motor (1) is connected to the encoder (3) through the extension assembly (2) to receive the position signal and speed information of the yaw motor (1) in real time; a fan cover (4) is fixedly installed at the input end of the encoder (3) and located on the outer periphery of the extension assembly (2), and the fan cover (4) is parallel to the rear motor shaft (11); the extension assembly (2) includes an extension shaft (21) and a coupling (22); the extension shaft (21) is fixedly connected to the rear motor shaft (11), and the output end of the extension shaft (21) is connected to the coupling (22); the output end of the coupling (22) is connected to the input end of the encoder (3).

2. The yaw motor device according to claim 1, characterized in that: The input end of the extended shaft (21) is inserted into the rear motor shaft (11) and connected to the rear motor shaft (11) by bolts.

3. The growth-type yaw motor device according to claim 1, characterized in that: The extended shaft (21) has a mounting groove (210) for accommodating the key pin (102) on its main body; a notch (10) is formed on the rear motor shaft (11), and the bottom of the key pin (102) is located in the notch (10).

4. The growth-type yaw motor device according to claim 1, characterized in that: The coupling (22) is a figure-eight coupling.

5. The growth-type yaw motor device according to claim 1, characterized in that: The input shaft of the encoder (3) passes through the bracket (30) and is connected to the coupling (22), and the main body of the encoder (3) is fixedly connected to the bracket (30); a set of meshes is formed on the fan cover (4); the bottom end of the bracket (30) is fixedly connected to the mesh holes on the fan cover (4) by bolts.

6. The growth-type yaw motor device according to claim 5, characterized in that: The bracket (30) is shaped like a zigzag and has handles (301) on both sides.

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