Angle-adjustable fan blade

Abstract

The utility model discloses an angle adjustable fan blade of fan, including rotor installation cylinder and fan blade, the rotor installation cylinder surface fixedly connected with the fixed base, the fixed base top end is equipped with the installation groove, the inside rotatable connection of installation groove has the disc, the fan blade one end extends to the inside of installation groove and is fixedly connected with the disc, the fixed base outer surface slidingly connected with the limit bushing, the limit bushing top fixedly connected with the limit pawl, the fixed base top is equipped with no. The no. The disc surface is equipped with no. The limit pawl, no. The no. The three of hole and hole are matched. The utility model discloses a rotatable disc and the limit bushing structure for fixing the disc, so that the angle of fan blade can be flexibly adjusted according to actual demand, so that fan blade can adapt to the motor demand of different force and rotating speed, improve the versatility and flexibility of fan blade.

Description

Technical Field

[0001] This utility model relates to the field of fan blade technology, specifically to a fan blade with an adjustable angle. Background Technology

[0002] In the field of wind turbine technology, the fan blade is one of the core components, and its performance has a crucial impact on the overall efficiency and application effect of the wind turbine. Traditional fan blade designs typically employ a fixed-angle structure, meaning the blade angle cannot be adjusted after manufacturing. However, in practical applications, motors with different forces and speeds require matching fan blades with corresponding tilt angles to achieve optimal airflow and energy efficiency.

[0003] Because the blade angle of traditional fan blades cannot be adjusted, they often fail to fully utilize the fan's performance when applied to fans with different forces and speeds. Furthermore, different fan blade angles need to be specially ordered and designed for different specifications and requirements, which not only increases manufacturing costs and timelines but also limits the versatility and flexibility of fan products.

[0004] Therefore, it is necessary to invent a fan blade with an adjustable angle to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an angle-adjustable fan blade to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an angle-adjustable fan blade, comprising a rotor mounting cylinder and a fan blade, wherein a fixed base is fixedly connected to the surface of the rotor mounting cylinder, and a mounting groove is provided at the top of the fixed base. A disc is rotatably connected inside the mounting groove. One end of the fan blade extends into the mounting groove and is fixedly connected to the disc. A limiting sleeve is slidably connected to the outer surface of the fixed base, and a limiting claw is fixedly connected to the top of the limiting sleeve. A first through hole is provided at the top of the fixed base, and the first through hole communicates with the inside of the mounting groove. A second through hole is provided on the surface of the disc. The limiting claw, the first through hole, and the second through hole are matched. One end of the limiting claw passes through the first through hole and is inserted into the second through hole. A screw hole is provided on one side of the outer wall of the fixed base, and a hand-tightening screw is threadedly connected to one side of the limiting sleeve. One end of the hand-tightening screw passes through the limiting sleeve and is threadedly connected to the screw hole.

[0007] Preferably, the number of the limiting claws, the first through hole, and the second through hole are all set to be multiple. The multiple limiting claws are arranged in a ring array around the center of the limiting sleeve, the multiple first through holes are arranged in a ring array around the center of the fixing seat, and the multiple second through holes are arranged in a ring array around the center of the disk.

[0008] Preferably, when the hand-tightening screw is unscrewed from the screw hole, the limiting sleeve is pushed upward along the fixed base, so that the limiting claw disengages from the second through hole on the surface of the disc, and the fan blade can be rotated to adjust the angle of the fan blade.

[0009] Preferably, the rotation angle of the disk should be an integer multiple of the included angle between two adjacent No. 2 through holes, so as to ensure that the limiting claw, No. 1 through hole and No. 2 through hole remain matched after the disk rotates.

[0010] Preferably, after the disc finishes rotating, the limiting sleeve is pushed downward along the fixed base so that the limiting claw is inserted into the second through hole on the surface of the disc, thereby fixing the disc. Then, the hand screw is screwed into the screw hole to fix the limiting sleeve, thereby locking the fan blade at the current angle.

[0011] Preferably, a guide groove is provided on the side of the outer wall of the fixed base away from the screw hole, and a slider is slidably connected inside the guide groove, with one end of the slider being fixedly connected to the inner wall of the limiting sleeve.

[0012] Preferably, the sliding stroke of the slider inside the guide groove is greater than the length of the limiting claw inserted into the second through hole. When the slider slides to the highest point inside the guide groove, it can ensure that the limiting claw is completely disengaged from the second through hole.

[0013] Preferably, the number of the fixed base and the fan blades are both three, and the three fixed bases and the three fan blades are arranged in a ring array around the center of the rotor mounting cylinder.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: By designing a rotatable disc and a limiting sleeve structure for fixing the disc, the angle of the fan blades can be flexibly adjusted according to actual needs. Specifically, by unscrewing the hand screw to release the fixing of the limiting sleeve, the limiting sleeve is pushed to disengage the limiting claw from the No. 2 through hole on the surface of the disc, allowing the fan blades to rotate freely to the desired angle. After rotation to the desired position, the limiting claw is reinserted and the limiting sleeve is fixed to lock the fan blades at the current angle. This design allows the fan blades to adapt to the motor requirements of different forces and speeds, improving the versatility and flexibility of the fan blades. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of one of the fan blades of this utility model when the angle is adjusted; Figure 3 This is a first-person exploded view of the structure of this utility model; Figure 4 This is a second-view exploded view of the structure of this utility model; Figure 5 This is a vertical sectional view of the present invention along the axial direction of the rotor mounting cylinder; Figure 6 This is a vertical sectional view of the present invention, perpendicular to the axial direction of the rotor mounting cylinder.

[0016] Explanation of reference numerals in the attached figures: 1. Rotor mounting cylinder; 2. Fan blade; 3. Fixing base; 4. Mounting groove; 5. Disc; 6. Limiting sleeve; 7. Limiting claw; 8. No. 1 through hole; 9. No. 2 through hole; 10. Screw hole; 11. Hand screw; 12. Guide groove; 13. Slider. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-6 The fan blade shown includes a rotor mounting cylinder 1 and a fan blade 2. A mounting base 3 is fixedly connected to the surface of the rotor mounting cylinder 1. A mounting groove 4 is opened at the top of the mounting base 3. A disc 5 is rotatably connected inside the mounting groove 4. One end of the fan blade 2 extends into the mounting groove 4 and is fixedly connected to the disc 5. A limiting sleeve 6 is slidably connected to the outer surface of the mounting base 3. A limiting claw 7 is fixedly connected to the top of the limiting sleeve 6. A first through hole 8 is opened at the top of the mounting base 3. The first through hole 8 communicates with the inside of the mounting groove 4. A second through hole 9 is opened on the surface of the disc 5. The limiting claw 7, the first through hole 8, and the second through hole 9 are matched. One end of the limiting claw 7 passes through the first through hole 8 and is inserted into the second through hole 9. A screw hole 10 is opened on one side of the outer wall of the mounting base 3. A hand screw 11 is threadedly connected to one side of the limiting sleeve 6. One end of the hand screw 11 passes through the limiting sleeve 6 and is threadedly connected to the screw hole 10.

[0019] In one aspect of this embodiment, the number of limiting claws 7, first through holes 8, and second through holes 9 are all set to be multiple. The multiple limiting claws 7 are arranged in a ring array around the center of the limiting sleeve 6, the multiple first through holes 8 are arranged in a ring array around the center of the fixing base 3, and the multiple second through holes 9 are arranged in a ring array around the center of the disk 5. The ring array distribution design of the multiple limiting claws 7, first through holes 8, and second through holes 9 helps to disperse stress, and can disperse the force that the fan blades will be subjected to to multiple points, thereby reducing stress concentration at a single point and helping to extend the service life of the fan blades.

[0020] When the hand screw 11 is unscrewed from the screw hole 10, push the limiting sleeve 6 upward along the fixing base 3 so that the limiting claw 7 disengages from the second through hole 9 on the surface of the disc 5, allowing the fan blade 2 to rotate and adjust its angle. The angle of rotation of the disc 5 should be an integer multiple of the included angle between two adjacent second through holes 9, ensuring that the limiting claw 7, the first through hole 8, and the second through hole 9 remain matched after the disc 5 rotates. After the disc 5 has finished rotating, push the limiting sleeve 6 downward along the fixing base 3 so that the limiting claw 7 engages with the second through hole 9 on the surface of the disc 5, thus fixing the disc 5. Then screw the hand screw 11 into the screw hole 10 to fix the limiting sleeve 6, thereby locking the fan blade 2 at the current angle.

[0021] A guide groove 12 is provided on the outer wall of the fixed base 3 away from the screw hole 10. A slider 13 is slidably connected inside the guide groove 12. One end of the slider 13 is fixedly connected to the inner wall of the limiting sleeve 6. The sliding stroke of the slider 13 inside the guide groove 12 is greater than the length of the limiting claw 7 inserted into the second through hole 9. When the slider 13 slides to the highest point inside the guide groove 12, it can ensure that the limiting claw 7 is completely disengaged from the second through hole 9. The cooperative design of the slider 13 and the guide groove 12 can ensure that the limiting sleeve 6 slides smoothly along the fixed base 3.

[0022] The number of fixed bases 3 and fan blades 2 is set to three, and the three fixed bases 3 and the three fan blades 2 are arranged in a ring array around the center of the rotor mounting cylinder 1.

[0023] Working principle of this utility model: Refer to the instruction manual appendix Figure 1-6 When it is necessary to adjust the fan blade angle, first, unscrew the hand screw 11 to release the fixation of the limit sleeve 6; Next, push the limiting sleeve 6 upward along the fixed base 3 until the limiting claw 7 completely disengages from the second through hole 9 on the surface of the disc 5. During this process, the slider 13 slides in the guide groove 12 to ensure that the limiting sleeve 6 rises smoothly. When the slider 13 slides to the highest point inside the guide groove 12, the limiting claw 7 completely disengages from the second through hole 9. At this time, the disc 5 can rotate freely. According to actual needs, the fan blade 2 is rotated to the required angle. Note that the angle of rotation of the disc 5 should be an integer multiple of the included angle between two adjacent No. 2 through holes 9, so as to ensure that the limit claw 7, No. 1 through hole 8 and No. 2 through hole 9 can still match after rotation. After the fan blade 2 rotates to the position, push the limiting sleeve 6 down along the fixed base 3 so that the limiting claw 7 is re-inserted into the new second through hole 9 on the surface of the disc 5, thereby fixing the disc 5. Finally, screw the hand screw 11 into the screw hole 10 to fix the limiting sleeve 6, thereby locking the fan blade 2 at the current adjusted angle. Through the above adjustment process, this utility model realizes the flexible adjustment of the fan blade angle, enabling the same fan to adapt to the motor requirements of different forces and speeds, and improving the versatility and flexibility of the fan blade.

[0024] 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. An angle-adjustable fan blade, comprising a rotor mounting cylinder (1) and a fan blade (2), characterized in that: A fixed base (3) is fixedly connected to the surface of the rotor mounting cylinder (1). A mounting groove (4) is provided at the top of the fixed base (3). A disc (5) is rotatably connected inside the mounting groove (4). One end of the fan blade (2) extends into the mounting groove (4) and is fixedly connected to the disc (5). A limit sleeve (6) is slidably connected to the outer surface of the fixed base (3). A limit claw (7) is fixedly connected to the top of the limit sleeve (6). A first through hole (8) is provided at the top of the fixed base (3). The first through hole (8) is connected to... The mounting slot (4) is internally connected. The surface of the disc (5) is provided with a second through hole (9). The limiting claw (7), the first through hole (8) and the second through hole (9) are matched. One end of the limiting claw (7) passes through the first through hole (8) and is inserted into the second through hole (9). A screw hole (10) is provided on one side of the outer wall of the fixing seat (3). A hand screw (11) is threaded on one side of the limiting sleeve (6). One end of the hand screw (11) passes through the limiting sleeve (6) and is threaded into the screw hole (10).

2. The adjustable-angle fan blade according to claim 1, characterized in that: The number of the limiting claws (7), the first through hole (8) and the second through hole (9) are all set to be multiple. The multiple limiting claws (7) are arranged in a ring array around the center of the limiting sleeve (6), the multiple first through holes (8) are arranged in a ring array around the center of the fixing seat (3), and the multiple second through holes (9) are arranged in a ring array around the center of the disk (5).

3. The adjustable-angle fan blade according to claim 1, characterized in that: When the hand-tightening screw (11) is screwed out of the screw hole (10), the limiting sleeve (6) is pushed upward along the fixed seat (3), so that the limiting claw (7) is disengaged from the second through hole (9) on the surface of the disc (5), and the fan blade (2) can be rotated to adjust the angle of the fan blade (2).

4. The adjustable-angle fan blade according to claim 1, characterized in that: The angle of rotation of the disk (5) should be an integer multiple of the angle between two adjacent No. 2 through holes (9), so as to ensure that the limiting claw (7), No. 1 through hole (8) and No. 2 through hole (9) remain matched after the disk (5) rotates.

5. The adjustable-angle fan blade according to claim 1, characterized in that: After the disc (5) finishes rotating, the limiting sleeve (6) is pushed down along the fixed base (3) so that the limiting claw (7) is inserted into the second through hole (9) on the surface of the disc (5) to fix the disc (5). Then, the hand screw (11) is screwed into the screw hole (10) to fix the limiting sleeve (6) and lock the fan blade (2) at the current angle.

6. The adjustable-angle fan blade according to claim 1, characterized in that: The outer wall of the fixed base (3) is provided with a guide groove (12) on the side away from the screw hole (10). A slider (13) is slidably connected inside the guide groove (12). One end of the slider (13) is fixedly connected to the inner wall of the limiting sleeve (6).

7. The adjustable-angle fan blade according to claim 6, characterized in that: The sliding stroke of the slider (13) inside the guide groove (12) is greater than the length of the limit claw (7) inserted into the second through hole (9). When the slider (13) slides to the highest point inside the guide groove (12), it can ensure that the limit claw (7) is completely disengaged from the second through hole (9).

8. The adjustable-angle fan blade according to claim 1, characterized in that: The number of the fixed base (3) and the fan blade (2) is set to three, and the three fixed bases (3) and the three fan blades (2) are arranged in a ring array around the center of the rotor mounting cylinder (1).

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