Blade deflection mechanism of wind driven generator

Abstract

The utility model discloses a blade deflection mechanism of a wind driven generator. The blade deflection mechanism comprises a cylinder, the motor body is arranged above the column body; and the deflection device is connected with the motor body so as to drive blades on the motor body to deflect. According to the scheme, deflection adjustment of the angles of the fan blades on the motor body is achieved.

Description

Technical Field

[0001] This utility model relates to wind power generation equipment, and in particular to a wind turbine blade deflection mechanism. Background Technology

[0002] Wind power generation equipment is a green and environmentally friendly power generation device. It mainly generates electricity by rotating blades driven by wind. Therefore, the efficiency of wind power utilization directly determines the power generation efficiency of wind power generation equipment. Existing wind power generation equipment typically has fixed blades. If the blades cannot adapt to changing wind direction, the angle of attack when the wind passes over the blades will deviate from the optimal angle of attack, resulting in angle-of-attack mismatch and low wind power generation efficiency. Therefore, designing a mechanism that can deflect wind turbine blades to improve wind power generation efficiency is essential. Utility Model Content

[0003] The purpose of this invention is to provide a wind turbine blade deflection mechanism that allows the wind to pass through the blade at the optimal angle of attack, thereby achieving high wind power generation efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A wind turbine blade deflection mechanism, comprising

[0006] Column;

[0007] The motor body is located on top of the column;

[0008] A deflection device is connected to the motor body to drive the blades on the motor body to deflect.

[0009] Preferably, the upper end of the column has an axially extending slide rail, the lower part of the slide rail is provided with a retaining ring, and the lower part of the retaining ring is provided with a mounting cavity coaxial with the slide rail; the deflection device includes a sliding sleeve, which can only slide axially into the mounting cavity, and the two ends of the sliding sleeve are respectively provided with annular cover plates A and B. The inner surface of cover plate A is provided with a first retaining tooth, and a chuck is rotatably disposed in the sliding sleeve. The upper surface of the chuck is provided with a second retaining tooth that can engage with the first retaining tooth, and the lower surface of the chuck is provided with a second retaining tooth that can engage with the first retaining tooth. The third chuck tooth is coaxially connected to the upper surface of the chuck with a connecting rod. The connecting rod passes through the cover plate and is fixedly connected to the motor body. A telescopic cylinder is provided in the mounting cavity. The telescopic cylinder drives and connects to the adjusting motor. A drive disk is coaxially connected to the output shaft of the adjusting motor. The upper surface of the drive disk is circumferentially provided with a fourth chuck tooth that can mesh with the third chuck tooth. The cover plate B can be rotatably locked onto the output shaft. A bushing is coaxially provided at the upper end of the column. The upper end of the bushing can be rotatably connected to the motor body.

[0010] Preferably, the sliding sidewall is provided with an axially extending anti-rotation groove, and a slider that slides into the anti-rotation groove is provided on the outer surface of the sliding sleeve.

[0011] Preferably, the upper surface of the retaining ring has pin holes evenly distributed around it, and the lower surface of the cover plate B is provided with pins that can be slidably inserted into the pin holes one by one.

[0012] Preferably, the lower surface of the chuck is provided with a conical groove, and the third tooth ring is disposed on the conical surface of the conical groove; the drive disk is conical to match the conical groove, and the fourth tooth ring is disposed on the conical surface of the drive disk to mesh with the third tooth.

[0013] Compared with the prior art, the beneficial effects of this utility model are: compared with the existing fixed wind power generation equipment, this solution is equipped with a deflection device to achieve the angle deflection of the wind blades by adjusting the overall rotation direction of the motor column. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 A sectional view;

[0016] Figure 3 This is an exploded view of this utility model;

[0017] Figure 4 yes Figure 3 A sectional view.

[0018] Reference numerals: 1. Column; 11. Slide rail; 12. Retaining ring; 13. Anti-rotation groove; 14. Pin hole; 15. Mounting cavity; 2. Motor body; 3. Deflection device; 31. Sliding sleeve; 32. Cover plate A; 33. Cover plate B; 34. First locking tooth; 35. Chuck; 36. Second locking tooth; 37. Third locking tooth; 38. Connecting rod; 39. Telescopic cylinder; 310. Adjusting motor; 311. Drive disc; 312. Fourth locking tooth; 313. Bushing; 314. Slider; 315. Pin; 316. Conical groove. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "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 of describing this utility model and simplifying the description, and 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.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4 The wind turbine blade deflection mechanism shown includes a column 1, a motor body 2 for generating wind power, and a motor body installed at the end of the column and connected to the motor body to drive the motor body to rotate when the wind direction is wrong, so that the blade is at the optimal angle of attack when the wind blows.

[0023] In this design, the upper end of the column 1 has an axially extending slide rail 11. A retaining ring 12 is provided at the lower part of the slide rail, and a mounting cavity 15 coaxial with the slide rail is provided below the retaining ring. The deflection device 3 includes a sliding sleeve 31, which slides vertically within the slide rail 11. Annular cover plates A32 and B33 are respectively provided at the upper and lower ends of the sliding sleeve. The inner surface of cover plate A has a plurality of first retaining teeth 34 evenly distributed circumferentially. Figure 2 As shown, a chuck 35 is rotatably mounted within the sliding sleeve. The upper surface of this chuck also has a plurality of second teeth 36 evenly distributed in a ring. When the sliding sleeve descends to the bottom, the first and second teeth engage. It should also be noted that a ring of third teeth 37 is circumferentially arranged on the lower surface of the chuck. Furthermore, a connecting rod 38 is coaxially connected to the upper surface of the chuck. This connecting rod rotatably passes through the cover plate A and is fixedly connected to the bottom of the motor body. Additionally, as... Figure 2As shown, a telescopic cylinder 39 is also installed in the mounting cavity 15 of the column. An adjusting motor 310 is connected to the telescopic rod of this cylinder, and a drive disc 311 is coaxially connected to the output shaft of the adjusting motor. It should be noted that the drive disc is also located in the sliding sleeve and is opposite to the chuck. Furthermore, a ring of fourth teeth 312 is circumferentially arranged on the upper surface of the drive disc 311. When the drive disc is lifted, the fourth teeth engage with the third teeth. It should be noted that, in order to enable the sliding sleeve to rise and fall synchronously with the drive disc, so that when the chuck cannot rise or fall, the second teeth on the upper surface of the chuck and the third teeth on the lower surface can disengage from their corresponding first and fourth teeth, the cover plate B in this design is rotatably engaged with the output shaft of the adjusting motor. In addition, to ensure that the motor body can rotate relative to the column when driven by the deflection device, a bushing 313 is coaxially connected to the upper end of the column. The upper end of this bushing is rotatably connected to the motor body via a slip ring.

[0024] It should be noted that there are many ways to allow the sliding sleeve to slide only axially within the slide rail. In this solution, an axially extending anti-rotation groove 13 is formed on the side wall of the slide rail. Simultaneously, a slider 314 is provided on the outer surface of the sliding sleeve, and this slider is slidably mounted in the corresponding anti-rotation groove. This allows the sliding sleeve to slide along the extending direction of the anti-rotation groove.

[0025] It should be noted that when the sliding sleeve falls, the first locking tooth on the cover plate A engages with the second locking tooth on the upper surface of the chuck. At this time, the sliding sleeve also plays a role in preventing the overall rotation of the motor body. To improve stability, several pins 315 are evenly distributed circumferentially on the lower surface of the cover plate B. Correspondingly, several pin holes 14 are provided on the retaining ring 12. When the sliding sleeve follows the falling adjusting motor to the bottom, the pins are inserted into the pin holes.

[0026] It should also be noted that, in order to improve the stability during driving, especially the stability when the drive disc is lifted, contacts the chuck, and drives the motor body to rotate, the lower surface of the chuck is provided with a conical groove 316, and the third cleat is ringed on the conical surface of the conical groove. At the same time, the shape of the drive disc is adapted to the conical groove, and the fourth cleat is also ringed on the conical surface of the drive disc to ensure that the fourth cleat and the third cleat can mesh after the drive disc is lifted into the conical groove.

[0027] Working Principle: When the motor body needs to be angled to achieve the optimal angle of attack for the fan blades, the telescopic cylinder raises the adjusting motor. Simultaneously, the drive disc and sliding sleeve on the output shaft of the adjusting motor are lifted. The first tooth on the upper cover plate A of the sliding sleeve disengages from the second tooth on the upper surface of the chuck, and the fourth tooth on the upper surface of the drive disc rises and engages with the third tooth on the lower surface of the chuck. Subsequently, the adjusting motor rotates, driving the drive disc to rotate. As the drive disc rotates, the chuck is driven, causing the motor body to rotate accordingly, and the fan blades deflect accordingly. Once the angle adjustment is complete, the telescopic cylinder retracts, causing the adjusting motor to descend synchronously. At this time, the output shaft of the adjusting motor drives the sliding sleeve, which is equipped with cover plate B, to descend synchronously. The drive disc disengages from the chuck, and the first tooth on cover plate A re-engages with the second tooth on the chuck. At this point, the motor body stabilizes again and does not rotate relative to the fan. It is important to know that when the sliding sleeve descends, the pin at the bottom of the sliding sleeve is also inserted into the pin hole to improve the stability of fixing the motor body.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade deflection mechanism, characterized in that: include Column (1); The motor body (2) is located above the column (1); The deflection device (3) is connected to the motor body (2) to drive the blades on the motor body (2) to deflect. The upper end of the column (1) is provided with an axially extending slide (11), and a retaining ring (12) is provided at the lower part of the slide (11). A mounting cavity (15) coaxial with the slide (11) is provided below the retaining ring (12). The deflection device (3) includes a sliding sleeve (31), which can only slide axially into the mounting cavity (15). The two ends of the sliding sleeve (31) are respectively provided with annular cover plates A (32) and B (33). The inner surface of the cover plate A (32) is provided with a first locking tooth (34). A chuck (35) is rotatably provided in the sliding sleeve (31). The upper surface of the chuck (35) is provided with a second locking tooth (36) that can mesh with the first locking tooth (34). The lower surface of the chuck (35) is provided with a second locking tooth (36) that can mesh with the first locking tooth (34). A third clasp tooth (37) is provided around the chuck (35). A connecting rod (38) is coaxially connected to the upper surface of the chuck (35). The connecting rod (38) passes through the cover plate and is fixedly connected to the motor body (2). A telescopic cylinder (39) is provided in the mounting cavity (15). The telescopic cylinder (39) drives and connects to the regulating motor (310). A drive disk (311) is coaxially connected to the output shaft of the regulating motor (310). A fourth clasp tooth (312) that can mesh with the third clasp tooth (37) is provided around the upper surface of the drive disk (311). The cover plate B (33) can be rotatably clamped onto the output shaft. A bushing (313) is coaxially provided at the upper end of the column (1). The upper end of the bushing (313) can be rotatably connected to the motor body (2).

2. The wind turbine blade deflection mechanism as described in claim 1, characterized in that: An axially extending anti-rotation groove (13) is provided on the side wall of the slide (11), and a slider (314) that slides into the anti-rotation groove (13) is provided on the outer surface of the slide sleeve (31).

3. The wind turbine blade deflection mechanism as described in claim 1, characterized in that: The upper surface of the retaining ring (12) is circumferentially distributed with pin holes (14), and the lower surface of the cover plate B (33) is provided with pins (315) that can be slidably inserted into the pin holes (14) in a one-to-one correspondence.

4. The wind turbine blade deflection mechanism as described in claim 1, characterized in that: The lower surface of the chuck (35) is provided with a conical groove (316), and the third tooth (37) is arranged around the conical surface of the conical groove (316); the drive disk (311) is conical to match the conical groove (316), and the fourth tooth (312) is arranged around the conical surface of the drive disk (311) to match and mesh with the third tooth (37).

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