Low-noise fan hub structure

Abstract

The utility model discloses a low-noise fan hub structure and relates to the technical field of fan hubs. The noise reduction device comprises a shell, a rotating mechanism is arranged in the shell, the rotating mechanism is used for smoothly rotating so as to reduce noise, a connecting mechanism is fixedly arranged at the lower end of the rotating mechanism, the connecting mechanism is used for stably connecting with a driving source, and the rotating mechanism comprises two limiting frames. Two limiting frames are arranged in the shell, one sides of the opposite faces of the two limiting frames are fixedly connected with the upper end and the lower end of the shell respectively, a rotating rod is arranged in the two limiting frames, two inner bearings are fixedly arranged on the outer surface of the rotating rod, and outer bearings are rotationally arranged on the outer surfaces of the two inner bearings. The fan hub structure can rotate smoothly through the rotating mechanism, so that the fan hub structure can rotate smoothly, and the fan hub structure can be stably connected through the connecting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of fan hubs, and specifically relates to a low-noise fan hub structure. Background Art

[0002] Wind power generation equipment converts the kinetic energy of wind into rotational mechanical energy to drive a generator to generate electricity. The wind turbine is a key component of the wind power equipment. The wind turbine consists of three blades and a hub. The hub is a part that connects the blades and the main shaft. Its function is to bear the thrust, torque, bending moment and gyroscopic moment acting on the blades by the wind force and then transfer the force and moment of the wind turbine to the mechanical mechanism. Therefore, the hub is an important part of the wind turbine and even the wind power generation equipment.

[0003] However, the following problems still exist in the prior art:

[0004] First of all, when the fan hub structure of the prior art supports the fan to rotate, most of the fan hub structures cannot rotate smoothly, resulting in a large amount of noise generated easily when the fan hub structure rotates.

[0005] Secondly, when the fan hub structure of the prior art supports the fan to rotate, most of the fan hub structures cannot be stably connected, resulting in looseness easily occurring when the fan hub structure rotates.

[0006] In view of the above problems, the inventor proposes a low-noise fan hub structure to solve the above problems. Summary of the Utility Model

[0007] In order to solve the problems that most of the fan hub structures cannot rotate smoothly and most of the fan hub structures cannot be stably connected; the purpose of the present utility model is to provide a low-noise fan hub structure.

[0008] To solve the above technical problems, the present utility model adopts the following technical solutions: A low-noise fan hub structure, including a housing, wherein a rotating mechanism is provided inside the housing. The rotating mechanism is for enabling smooth rotation so as to reduce noise. A connecting mechanism is fixedly provided at the lower end of the rotating mechanism. The connecting mechanism is for enabling stable connection with a driving source. The rotating mechanism includes two limiting frames, and one side of the opposite surfaces of the two limiting frames is respectively fixedly connected to the upper end and the lower end of the housing. A rotating rod is jointly provided inside the two limiting frames. Two inner bearings are fixedly provided on the outer surface of the rotating rod. Outer bearings are rotatably provided on the outer surfaces of the two inner bearings, and one end of each of the two outer bearings is respectively fixedly connected to one end of the two limiting frames. Axial grooves are provided on the inner surfaces of the two outer bearings and the outer surfaces of the two inner bearings. A plurality of balls are jointly slidably provided on the inner surfaces of every two axial grooves. A fan wheel is fixedly provided on the outer surface of the rotating rod, and a plurality of fan blades are fixedly provided on the outer surface of the fan wheel.

[0009] Preferably, the connecting mechanism includes two connecting bushings. A connecting rod is provided at the upper end of one of the connecting bushings. A connecting clamping rod is fixedly provided on the outer surface of the connecting rod. The upper ends of the connecting rod and the connecting clamping rod are respectively fixedly connected to the lower end of the rotating rod. Biting grooves are provided at one end of the opposite surfaces of the two connecting bushings, and a biting gear is jointly provided on the inner surfaces of the two biting grooves.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. Through the rotating mechanism of the present utility model, when the fan inside the fan hub structure is operating, it can ensure that the fan rotates smoothly, thereby avoiding a large amount of noise generated by friction between the fan and other structures, and thus enabling the fan hub structure to rotate smoothly.

[0012] 2. Through the connecting mechanism of the present utility model, when the fan inside the fan hub structure is operating, it can be stably connected to the output end of the driving source, thereby ensuring the normal rotation of the fan, and thus enabling the fan hub structure to be stably connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the present utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the rotating mechanism structure of the present utility model.

[0016] Figure 3 This is a schematic structural view of the connecting mechanism of the present utility model.

[0017] In the figure: 1, housing; 2, rotating mechanism; 3, connecting mechanism; 20, limiting frame; 21, limiting groove; 22, limiting plate; 23, inner bearing; 24, outer bearing; 25, shaft groove; 26, ball; 27, rotating rod; 28, fan wheel; 29, fan blade; 30, connecting shaft sleeve; 31, connecting clamping rod; 32, connecting rod; 33, fixing groove; 34, fixing screw groove; 35, engaging groove; 36, connecting groove; 37, connecting clamping groove; 38, engaging gear; 39, fixing bolt. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment: As Figures 1 - 3 shown, the present utility model provides a low-noise fan hub structure, including a housing 1. A rotating mechanism 2 is provided inside the housing 1. A connecting mechanism 3 is fixedly provided at the lower end of the rotating mechanism 2. The rotating mechanism 2 includes two limiting frames 20, and one side of the opposite surfaces of the two limiting frames 20 is fixedly connected to the upper end and the lower end of the housing 1 respectively. A rotating rod 27 is jointly provided inside the two limiting frames 20. Two inner bearings 23 are fixedly provided on the outer surface of the rotating rod 27. Outer bearings 24 are rotatably provided on the outer surfaces of the two inner bearings 23, and one end of each of the two outer bearings 24 is fixedly connected to one end of the two limiting frames 20 respectively. Shaft grooves 25 are opened on the inner surfaces of the two outer bearings 24 and the outer surfaces of the two inner bearings 23. A plurality of balls 26 are jointly slidably provided on the inner surfaces of every two shaft grooves 25. A fan wheel 28 is fixedly provided on the outer surface of the rotating rod 27. A plurality of fan blades 29 are fixedly provided on the outer surface of the fan wheel 28. Through the rotating mechanism 2, when the fan rotates, it will drive the rotating rod 27 to rotate, so that the rotating rod 27 can drive the inner bearing 23 to rotate on the inner surface of the outer bearing 24 at one end of the limiting frame 20, and ensure smooth rotation through the shaft groove 25, that is, the rotating rod 27 can drive the fan blades 29 on the outer surface of the fan wheel 28 to rotate on the inner surface of the housing 1, thereby achieving the purpose that the fan hub structure can rotate smoothly.

[0020] Both ends of the rotating rod 27 are fixedly provided with limiting plates 22. One end of each of the two limiting frames 20 is provided with a limiting groove 21 that is respectively used in cooperation with the two limiting plates 22. There are eight fan blades 29, and the eight fan blades 29 are annularly distributed on the outer surface of the fan wheel 28. One side of each of the plurality of fan blades 29 is slidably attached to the inner surface of the housing 1. The rotating rod 27 can be rotationally limited on the inner surface of the limiting groove 21 through the limiting plates 22, and the annular distribution of the fan blades 29 can effectively improve the flow guiding effect of the fan.

[0021] The connecting mechanism 3 includes two connecting sleeves 30. The upper end of one of the connecting sleeves 30 is provided with a connecting rod 32. A connecting clamping rod 31 is fixedly provided on the outer surface of the connecting rod 32. The upper ends of the connecting rod 32 and the connecting clamping rod 31 are both fixedly connected to the lower end of the rotating rod 27. One end of the opposite surfaces of the two connecting sleeves 30 is provided with a clamping groove 35. A clamping gear 38 is jointly provided on the inner surfaces of the two clamping grooves 35. Through the connecting mechanism 3, the connecting rod 32 is inserted through the connecting groove 36 on the connecting sleeve 30 and can be limited through the connecting clamping rod 31 and the connecting clamping groove 37. Then, the fixing bolt 39 is screwed into the fixing screw groove 34, so that the fixing groove 33 can clamp and fix the connecting rod 32 and the connecting clamping rod 31. Then, the clamping gear 38 is clamped between the two clamping grooves 35, so as to ensure that the driving source can stably drive the connecting rod 32 to rotate, thereby achieving the purpose of stably connecting the fan hub structure.

[0022] The outer surfaces of the two connecting sleeves 30 are both provided with fixing grooves 33. The outer surfaces of the two connecting sleeves 30 are both provided with two fixing screw grooves 34 that are respectively used in cooperation with the two fixing grooves 33. The inner surfaces of the four fixing screw grooves 34 are all threadedly inserted with fixing bolts 39. One end of each of the two connecting sleeves 30 is provided with a connecting groove ३६ that is used in cooperation with the connecting rod 32. One end of each of the two connecting sleeves 30 is provided with a connecting clamping groove 37 that is used in cooperation with the connecting clamping rod 31. The outer surface of the clamping gear 38 is engaged with the inner surfaces of the two clamping grooves 35. The fixing bolt 39 is screwed into the fixing screw groove 34, so that the fixing groove 33 can clamp and fix the connecting rod 32 and the connecting clamping rod 31. The connecting rod 32 and the connecting clamping rod 31 can be limited through the connecting groove 36 and the connecting clamping groove 37. The clamping gear 38 can be clamped between the two clamping grooves 35, so as to ensure that the driving source can stably drive the connecting rod 32 to rotate.

[0023] Working principle: By rotating mechanism 2, when the fan rotates, it will drive the rotating rod 27 to rotate, so that the rotating rod 27 can drive the inner bearing 23 to rotate on the inner surface of the outer bearing 24 at one end of the limit frame 20, and ensure smooth rotation through the shaft groove 25, so that the rotating rod 27 can drive the fan blades 29 on the outer surface of the fan wheel 28 to rotate on the inner surface of the housing 1, thus achieving the purpose that the fan hub structure can rotate smoothly;

[0024] The rotating rod 27 can be rotationally limited on the inner surface of the limit groove 21 through the limit plate 22, and the fan blades 29 are annularly distributed, which can effectively improve the diversion effect of the fan;

[0025] Through the connecting mechanism 3, the connecting rod 32 is inserted through the connecting groove 36 on the connecting shaft sleeve 30, and can be limited by the connecting clamping rod 31 and the connecting clamping groove 37. Then, the fixing bolt 39 is screwed into the fixing screw groove 34, so that the fixing groove 33 can clamp and fix the connecting rod 32 and the connecting clamping rod 31. Then, the engaging gear 38 is clamped between the two engaging grooves 35, so as to ensure that the driving source can stably drive the connecting rod 32 to rotate, thus achieving the purpose that the fan hub structure can be stably connected;

[0026] The fixing bolt 39 is screwed into the fixing screw groove 34, so that the fixing groove 33 can clamp and fix the connecting rod 32 and the connecting clamping rod 31. The connecting rod 32 and the connecting clamping rod 31 can be limited through the connecting groove 36 and the connecting clamping groove 37, and the engaging gear 38 can be clamped between the two engaging grooves 35, so as to ensure that the driving source can stably drive the connecting rod 32 to rotate.

[0027] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A low-noise fan hub structure, comprising a housing (1), characterized in that: Inside the housing (1), a rotating mechanism (2) is provided, and a connecting mechanism (3) is fixedly provided at the lower end of the rotating mechanism (2). The rotating mechanism (2) includes two limiting frames (20), and one side of the opposite surfaces of the two limiting frames (20) is fixedly connected to the upper end and the lower end of the housing (1) respectively. A rotating rod (27) is jointly provided inside the two limiting frames (20). Two inner bearings (23) are fixedly provided on the outer surface of the rotating rod (27). Outer bearings (24) are rotatably provided on the outer surfaces of the two inner bearings (23), and one end of each of the two outer bearings (24) is fixedly connected to one end of each of the two limiting frames (20). Axial grooves (25) are provided on the inner surfaces of the two outer bearings (24) and the outer surfaces of the two inner bearings (23). A plurality of balls (26) are jointly slidably provided on the inner surfaces of every two of the axial grooves (25). A fan wheel (28) is fixedly provided on the outer surface of the rotating rod (27), and a plurality of fan blades (29) are fixedly provided on the outer surface of the fan wheel (28).

2. The low-noise fan hub structure according to claim 1, characterized in that The connecting mechanism (3) includes two connecting bushings (30). A connecting rod (32) is provided at the upper end of one of the connecting bushings (30). A connecting clamping rod (31) is fixedly provided on the outer surface of the connecting rod (32). The upper ends of the connecting rod (32) and the connecting clamping rod (31) are both fixedly connected to the lower end of the rotating rod (27). Engagement grooves (35) are provided at one end of the opposite surfaces of the two connecting bushings (30). An engagement gear (38) is jointly provided on the inner surfaces of the two engagement grooves (35).

3. The low-noise fan hub structure according to claim 1, wherein Limit plates (22) are fixedly provided at both ends of the rotating rod (27), and limit grooves (21) respectively cooperating with the two limit plates (22) are provided at one end of each of the two limiting frames (20).

4. A low-noise fan hub structure according to claim 1, characterized in that, There are eight fan blades (29), and the eight fan blades (29) are annularly distributed on the outer surface of the fan wheel (28).

5. A low-noise fan hub structure according to claim 1, characterized in that, One side of the plurality of fan blades (29) is slidably attached to the inner surface of the housing (1).

6. The hub structure of a low-noise fan according to claim 2, characterized in that Fixing grooves (33) are provided on the outer surfaces of the two connecting bushings (30), and fixing screw grooves (34) respectively cooperating with the two fixing grooves (33) are provided on the outer surfaces of the two connecting bushings (30). Fixing bolts (39) are threadedly inserted into the inner surfaces of the four fixing screw grooves (34).

7. The hub structure of a low-noise fan according to claim 2, characterized in that, Connection grooves (36) respectively cooperating with the connecting rod (32) are provided at one end of each of the two connecting bushings (30), and connection card slots (37) respectively cooperating with the connecting clamping rod (31) are provided at one end of each of the two connecting bushings (30).

8. The hub structure of a low-noise fan according to claim 2, characterized in that, The outer surface of the engagement gear (38) is engaged with the inner surfaces of the two engagement grooves (35).

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