Blade angle adjusting device of wind driven generator

Abstract

The utility model relates to the technical field of wind driven generator blade angle adjustment, in particular to a wind driven generator blade angle adjusting device which comprises an installation cylinder, four fixing shafts are rotationally installed on the outer surface of the installation cylinder, and installation bases are fixedly installed at the ends, outside the installation cylinder, of the fixing shafts. A connecting slot is formed in one end, arranged in the mounting cylinder, of the fixing shaft. According to the blade angle adjusting device of the wind driven generator, a second electric push rod is started to drive a limiting frame to move upwards and be separated from a limiting ratchet wheel, a main motor is started to drive a second bevel gear to rotate, power is transmitted to a connecting shaft through a meshed first bevel gear, then a main gear and all moving gears are driven to rotate, and the moving gears drive a moving shaft to rotate; the moving shaft drives the fixed shaft to rotate through the inserting block, the fixed shaft drives the blades to rotate through the mounting base, and the angles of the multiple blades can be conveniently adjusted at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind driven generator blade angle adjusting technical field, concretely is a kind of wind driven generator blade angle adjusting device. BACKGROUND

[0002] Wind driven generator is the electric power equipment that wind energy is converted into mechanical work, and is converted into electric energy, mainly by wind wheel, generator, direction regulator, tower and other components are constituted.Its working principle is that wind wheel rotates under the action of wind force, and the kinetic energy of wind is changed into the mechanical energy of wind wheel shaft, and then drives generator to generate electricity, when the size of wind force changes, the rotating speed of generator will also change accordingly, unstable operation, in order to obtain relatively stable rotating speed of wind driven generator, the angle of blade needs to be adjusted, the angle of blade needs to be smaller when wind force is larger, the angle of blade needs to be larger when wind force is smaller, so that blade is at the best angle and maximally utilizes wind energy, ensure that the rotating speed of wind driven generator is relatively stable.

[0003] Patent application number: 202322776802.9 proposes a kind of miniature wind driven generator blade angle adjusting device.It is constituted by fixed sleeve, screw rod, moving mechanism, elastic sleeve, eccentric shaft, slider, rotating sleeve, end cover, bearing, screw, is driven screw rod rotation to drive moving mechanism to move, slider is moved simultaneously, eccentric shaft is rotated along the central hole of rotating sleeve while slider is moved, and then drives blade angle change, can control the rotation direction of driving screw rod according to the size of wind volume to adjust blade angle, so that wind driven generator outputs relatively constant rotating speed and power.

[0004] The device also has some deficiencies, it cannot adjust the angle of individual blade, it is difficult to adapt to more complex weather conditions, and no locking mechanism is provided inside, when external wind speed is too large, it is easy to drive generator blade and eccentric shaft to sway, affect the normal work of generator, affect the service life of generator. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of wind driven generator blade angle adjusting device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of wind driven generator blade angle adjusting device, including installation cylinder, the outer surface of installation cylinder is rotatably installed with four fixed shafts, the one end of fixed shaft setting at the outside of installation cylinder is fixedly installed with mounting seat, the one end of fixed shaft setting at the inside of installation cylinder is provided with connecting slot;

[0008] The gear box is fixedly installed at the center of the bottom wall of the mounting cylinder, a main motor is fixedly installed at the center of the bottom surface of the mounting cylinder, the output shaft of the main motor extends to the inside of the gear box, and a bevel gear two is fixedly installed at the top end of the output shaft of the main motor, four connecting shafts are rotatably installed on the inner wall of the gear box, a bevel gear one is fixedly installed at one end of each connecting shaft, the bevel gear one meshes with the bevel gear two, a main gear is also fixedly installed on the outer surface of each connecting shaft, and a sub motor is fixedly installed around the surface of the gear box, the output shaft of the sub motor extends to the inside of the gear box, and a sub gear is fixedly installed at the top end of the output shaft of the sub motor.

[0009] The number of the moving shafts is matched with the number of the fixed shafts, one end of each moving shaft is fixedly installed with an insertion block matched with a connecting slot, the outer surface of each moving shaft is provided with an extension assembly, the moving shaft is installed on the inner wall of the mounting cylinder through the extension assembly, the other end of each moving shaft extends to the inside of the gear box, and a moving gear is fixedly installed at the other end of each moving shaft, the moving gear is matched with the sub gear and the main gear.

[0010] Preferably, the diameter of the bevel gear one is smaller than the diameter of the bevel gear two, and the four bevel gears one are not in contact.

[0011] Preferably, the interval between the sub gear and the connecting shaft is greater than the thickness of the moving gear.

[0012] Preferably, the surface of the gear box is fixedly installed with four sleeves, and one end of each moving shaft extends to the inside of the gear box through the sleeve.

[0013] Preferably, the extension assembly comprises two electric push rods fixedly installed on the inner wall of the mounting cylinder, one end of each electric push rod is fixedly installed with a connecting plate, a bearing is installed at the center of the connecting plate, and the connecting plate is rotatably installed on the moving shaft through the bearing.

[0014] Preferably, the top wall of the mounting cylinder is also fixedly installed with a plurality of electric push rods two, the bottom end of each electric push rod two is fixedly installed with a limiting frame, the limiting frame is sleeved outside the gear box, the outer surface of each moving shaft is fixedly installed with a limiting ratchet wheel, the bottom surface of the limiting frame is fixedly connected with a fixed tooth matched with the limiting ratchet wheel.

[0015] Compared with the prior art, the wind turbine blade angle adjusting device has the following beneficial effects:

[0016] 1. The wind turbine blade angle adjustment device, by activating the electric push rod two, drives the limit frame to move upward and separate from the limit ratchet. By activating the main motor, the bevel gear two rotates, and the power is transmitted to the connecting shaft through the meshing bevel gear one, which in turn drives the main gear and all the moving gears to rotate. The moving gears drive the moving shaft to rotate, and the moving shaft drives the fixed shaft to rotate through the insert block. The fixed shaft drives the blade to rotate through the mounting base, which facilitates the simultaneous adjustment of the angle of multiple blades.

[0017] 2. The wind turbine blade angle adjustment device moves the connecting plate by activating the electric push rod at the corresponding position. The connecting plate drives the moving shaft to slide on the sleeve, causing the moving gear to separate from the main gear and mesh with the split gear. By activating the split motor, the moving shaft can be rotated independently, making it convenient to adjust the angle of the blade individually.

[0018] 3. After the blade angle adjustment device is adjusted, the electric push rod 2 is activated to drive the limit frame to move downward and engage with the limit ratchet, which facilitates locking the blade angle and improves the stability of the blade. When the moving shaft moves back and forth to change the adjustment mode, the limit ratchet can also be locked to prevent the moving shaft from being difficult to limit and lock by the motor's own resistance when the moving gear is not in contact with the distribution gear and the main gear. This also prevents the moving shaft from being affected by wind force and affecting the adjustment accuracy of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mounting cylinder of this utility model;

[0021] Figure 3 This is a schematic diagram of the movable shaft structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention when the moving gear and the dividing gear mesh;

[0023] Figure 5 This is a schematic diagram of the structure of the present invention when the moving gear meshes with the main gear.

[0024] In the diagram: 1. Mounting cylinder; 2. Fixed shaft; 3. Mounting base; 4. Connecting slot; 5. Moving shaft; 6. Limiting ratchet; 7. Insert block; 8. Connecting plate; 9. Electric push rod; 10. Moving gear; 11. Gearbox; 12. Sub-motor; 13. Sub-gear; 14. Connecting shaft; 15. Bevel gear one; 16. Main gear; 17. Main motor; 18. Bevel gear two; 19. Electric push rod two; 20. Limiting frame. Detailed Implementation

[0025] Please see Figures 1-5 A wind turbine blade angle adjustment device includes a mounting cylinder 1. Four fixed shafts 2 are rotatably mounted on the outer surface of the mounting cylinder 1. Each fixed shaft 2 is fixedly mounted with a mounting seat 3 at one end outside the mounting cylinder 1 for mounting blades. A connecting slot 4 is provided at one end of the fixed shaft 2 inside the mounting cylinder 1.

[0026] Gearbox 11 is fixedly installed at the center of the bottom wall of mounting cylinder 1. A main motor 17 is fixedly installed at the center of the bottom surface of mounting cylinder 1. The output shaft of the main motor 17 extends into the interior of gearbox 11, and a bevel gear 18 is fixedly installed at the top of the output shaft of the main motor 17. Four connecting shafts 14 are rotatably installed on the inner wall of gearbox 11. A bevel gear 15 is fixedly installed at one end of each connecting shaft 14. The bevel gear 15 meshes with the bevel gear 18. A main gear 16 is also fixedly installed on the outer surface of each connecting shaft 14. A branch motor 12 is fixedly installed around the surface of gearbox 11. The output shafts of the branch motors 12 extend into the interior of gearbox 11, and a branch gear 13 is fixedly installed at the top of the output shafts of the branch motors 12.

[0027] Among them, the diameter of bevel gear 15 is smaller than the diameter of bevel gear 18, and the four bevel gears 15 do not contact each other to prevent them from colliding with each other and affecting the normal operation of the device.

[0028] The horizontal gap between the dividing gear 13 and the connecting shaft 14 is greater than the thickness of the moving gear 10 to prevent the moving gear 10 from meshing with both the dividing gear 13 and the main gear 16 at the same time, thus affecting the normal adjustment of the blade angle.

[0029] The number and position of the movable shaft 5 and the fixed shaft 2 are matched. One end of the movable shaft 5 is fixedly installed with a plug 7, which matches the connecting slot 4. The outer surface of the movable shaft 5 is provided with a telescopic component. The movable shaft 5 is installed on the inner wall of the mounting cylinder 1 through the telescopic component. The other end of the movable shaft 5 extends into the interior of the gearbox 11, and the other end is fixedly installed with a movable gear 10. The movable gear 10 matches the split gear 13 and the main gear 16.

[0030] The telescopic component can drive the moving shaft 5 to move back and forth, thereby driving the moving gear 10 to mesh with the main gear 16 or the split gear 13, thus changing the mode of adjusting the blade angle of the device.

[0031] When the moving gear 10 meshes with the main gear 16, the main motor 17 is started, which drives the second bevel gear 18 to rotate. The power is transmitted to the connecting shaft 14 through the meshing bevel gear 15, which in turn drives the main gear 16 and all the moving gears 10 to rotate. The moving gear 10 drives the moving shaft 5 to rotate. The moving shaft 5 drives the fixed shaft 2 to rotate through the insert block 7. The fixed shaft 2 drives the blade to rotate through the mounting base 3, which facilitates the simultaneous adjustment of the angle of multiple blades. When the moving gear 10 meshes with the split gear 13, the split motor 12 is started, which can drive the moving shaft 5 to rotate independently, which facilitates the individual adjustment of the angle of this blade.

[0032] The telescopic assembly includes two electric push rods 9 fixedly installed on the inner wall of the mounting cylinder 1. A connecting plate 8 is fixedly installed at one end of each electric push rod 9. A bearing is installed at the center of the connecting plate 8. The connecting plate 8 is rotatably mounted on the moving shaft 5 through the bearing. When only the angle of a single blade needs to be adjusted, the electric push rod 9 at the corresponding position is activated first, which drives the connecting plate 8 to move. The connecting plate 8 drives the moving shaft 5 to slide on the sleeve, causing the moving gear 10 to separate from the main gear 16 and mesh with the dividing gear 13. By activating the dividing motor 12, the moving shaft 5 can be rotated independently, which facilitates the individual adjustment of the angle of this blade.

[0033] Furthermore, four sleeves are fixedly installed on the surface of the gearbox 11, and one end of each of the moving shafts 5 extends into the interior of the gearbox 11 through the sleeves, facilitating the normal movement and rotation of the moving shafts 5.

[0034] The top wall of the mounting cylinder 1 is also fixedly equipped with multiple electric push rods 19. The bottom end of the electric push rods 19 is fixedly equipped with a limit frame 20, which is sleeved on the outside of the gearbox 11. The outer surface of the moving shaft 5 is fixedly equipped with a limit ratchet 6. The bottom surface of the limit frame 20 is fixedly connected with a fixed tooth that matches the limit ratchet 6. When the blade angle is adjusted, the electric push rods 19 are started to drive the limit frame 20 to move downward and engage with the limit ratchet 6, which facilitates locking the blade angle and improves the stability of the blade. When the moving shaft 5 moves back and forth to change the adjustment mode, the limit ratchet 6 can also be locked to prevent the moving shaft 5 from being locked by the motor's own resistance when the moving gear 10 is not in contact with the dividing gear 13 and the main gear 16. This also prevents the moving shaft 5 from being affected by wind force and affecting the adjustment accuracy of the device.

[0035] Working principle: The wind turbine blade angle adjustment device first starts by activating the electric push rod 19, which moves the limit frame 20 upward and separates it from the limit ratchet 6. Then, the main motor 17 is activated, which drives the bevel gear 18 to rotate. The power is transmitted to the connecting shaft 14 through the meshing bevel gear 15, which in turn drives the main gear 16 and all the moving gears 10 to rotate. The moving gears 10 drive the moving shaft 5 to rotate. The moving shaft 5 drives the fixed shaft 2 to rotate through the insert block 7. The fixed shaft 2 drives the blade to rotate through the mounting base 3, which facilitates the simultaneous adjustment of the angle of multiple blades.

[0036] When only the angle of a single blade needs to be adjusted, the electric push rod 9 at the corresponding position is activated first, which drives the connecting plate 8 to move. The connecting plate 8 drives the moving shaft 5 to slide on the sleeve, which drives the moving gear 10 to separate from the main gear 16 and mesh with the dividing gear 13. By activating the dividing motor 12, the moving shaft 5 can be driven to rotate independently, making it convenient to adjust the angle of this blade individually.

[0037] After the blade angle is adjusted, the electric push rod 19 is activated to move the limit frame 20 downwards, engaging with the limit ratchet 6. This facilitates locking the blade angle and improves blade stability. When the moving shaft 5 moves back and forth to change the adjustment mode, the limit ratchet 6 can also be locked to prevent the moving shaft 5 from being locked by the motor's own resistance when the moving gear 10 is not in contact with the dividing gear 13 and the main gear 16. This also prevents the moving shaft 5 from being affected by wind force and affecting the adjustment accuracy of the device.

Claims

1. A wind turbine blade angle adjustment device, characterized in that: Includes a mounting cylinder (1), on the outer surface of which four fixed shafts (2) are rotatably mounted. Each fixed shaft (2) is fixedly mounted with a mounting seat (3) at one end outside the mounting cylinder (1), and a connecting slot (4) is provided at one end inside the mounting cylinder (1). A gearbox (11) is fixedly installed at the center of the bottom wall of the mounting cylinder (1). A main motor (17) is fixedly installed at the center of the bottom surface of the mounting cylinder (1). The output shaft of the main motor (17) extends into the interior of the gearbox (11), and a bevel gear (18) is fixedly installed at the top of the output shaft of the main motor (17). Four connecting shafts (14) are rotatably installed on the inner wall of the gearbox (11). A bevel gear (15) is fixedly installed at one end of each connecting shaft (14). The bevel gear (15) meshes with the bevel gear (18). A main gear (16) is also fixedly installed on the outer surface of each connecting shaft (14). A sub-motor (12) is fixedly installed around the surface of the gearbox (11). The output shafts of the sub-motors (12) extend into the interior of the gearbox (11), and a sub-gear (13) is fixedly installed at the top of the output shafts of the sub-motors (12). The movable shaft (5) is matched with the fixed shaft (2) in number and position. One end of the movable shaft (5) is fixedly installed with a plug (7), which matches the connecting slot (4). The outer surface of the movable shaft (5) is provided with a telescopic component. The movable shaft (5) is installed on the inner wall of the mounting cylinder (1) through the telescopic component. The other end of the movable shaft (5) extends into the interior of the gearbox (11), and a movable gear (10) is fixedly installed on the other end. The movable gear (10) matches the sub-gear (13) and the main gear (16).

2. The wind turbine blade angle adjustment device according to claim 1, characterized in that: The diameter of the first bevel gear (15) is smaller than the diameter of the second bevel gear (18), and none of the four first bevel gears (15) are in contact.

3. The wind turbine blade angle adjustment device according to claim 1, characterized in that: The horizontal spacing between the split gear (13) and the connecting shaft (14) is greater than the thickness of the moving gear (10).

4. The wind turbine blade angle adjustment device according to claim 1, characterized in that: Four sleeves are fixedly installed on the surface of the gearbox (11), and one end of each of the moving shafts (5) extends into the interior of the gearbox (11) through the sleeves.

5. The wind turbine blade angle adjustment device according to claim 1, characterized in that: The telescopic assembly includes two electric push rods (9) fixedly installed on the inner wall of the mounting cylinder (1). Each electric push rod (9) has a connecting plate (8) fixedly installed at one end. A bearing is installed at the center of the connecting plate (8). The connecting plate (8) is rotatably mounted on the moving shaft (5) through the bearing.

6. The wind turbine blade angle adjustment device according to claim 1, characterized in that: The top wall of the mounting cylinder (1) is also fixedly installed with a plurality of electric push rods (19). The bottom end of the electric push rods (19) is fixedly installed with a limiting frame (20). The limiting frame (20) is sleeved on the outside of the gearbox (11). The outer surface of the moving shaft (5) is fixedly installed with a limiting ratchet (6). The bottom surface of the limiting frame (20) is fixedly connected with a fixing tooth that matches the limiting ratchet (6).

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