Wind wheel hub structure

Abstract

The utility model discloses a wind wheel hub structure, which comprises an outer cylindrical wall surface and an inner cylindrical wall surface, a plurality of V-shaped reinforcing ribs and inverted V-shaped reinforcing ribs are fixedly connected on the inner cylindrical wall surface along the circumference, the inverted V-shaped reinforcing ribs and the V-shaped reinforcing ribs are mutually symmetrical, and the plurality of V-shaped reinforcing ribs and the inverted V-shaped reinforcing ribs are mutually connected in a staggered manner. Installation platforms are fixedly installed in the middle of the bottom of the V-shaped reinforcing rib and in the middle of the top of the inverted-V-shaped reinforcing rib respectively, and the installation platforms are used for being connected with a wind wheel and a motor and attached to a motor flange plate. The wind wheel hub structure has the advantages of being simple in structure, convenient to produce, light in weight, safe, reliable, flexible to install and the like, has two different installation modes of air blowing installation and air suction installation, is not limited to wind wheels of certain sizes in application, can be enlarged and shrunk according to the sizes of the wind wheels, and has wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, and in particular to a wind wheel hub structure. Background Art

[0002] In the field of wind turbines, there are many ways to connect the wind rotor and the motor, such as welding, press fitting, fasteners and other connection methods. Among them, the method of connecting the wind rotor and the motor flange through fasteners is more flexible, with the characteristics of flexible installation, strong versatility, simple production and installation. However, in order to tightly connect the wind rotor and the motor, the wind rotor itself needs high structural strength and flexible installation. It is necessary to strengthen the structural strength of the wind rotor hub and add more reinforcement structures. It can only meet the single installation method of the wind rotor, such as suction installation or blowing installation. It greatly increases the weight of the wind rotor and the complexity of the structure, making the wind rotor production mold more complicated, and the quality cannot be taken into account. How to design a wind rotor hub with simple structure, light weight, convenient production, flexible installation, and strong product versatility has become an especially urgent issue. Utility Model Content

[0003] In order to solve the above technical problems, the utility model designs a wind wheel hub structure.

[0004] The utility model adopts the following technical solutions:

[0005] A wind wheel hub structure comprises an outer cylindrical wall and an inner cylindrical wall, wherein the inner cylindrical wall is fixedly connected with a plurality of V-shaped stiffening ribs and inverted V-shaped stiffening ribs along the circumference, the inverted V-shaped stiffening ribs and the V-shaped stiffening ribs are symmetrical with each other, the plurality of V-shaped stiffening ribs and inverted V-shaped stiffening ribs are staggered and connected with each other, a mounting platform is fixedly installed in the middle of the bottom of the V-shaped stiffening rib and in the middle of the top of the inverted V-shaped stiffening rib respectively, the mounting platform is used to connect the wind wheel and the motor, and fits with the motor flange.

[0006] Preferably, a positioning column is provided on each mounting platform in the middle of the bottom of the V-shaped reinforcement rib and in the middle of the top of the inverted V-shaped reinforcement rib. The positioning column is used for positioning when the hub is installed on the motor flange. The height of the positioning column is a, and the value range is a∈(5,10) mm.

[0007] Preferably, the V-shaped reinforcement ribs and the inverted V-shaped reinforcement ribs are respectively provided with corresponding positioning slots, which are used to guide and position the protective cover accessories when the wind wheel is installed with the protective cover accessories. The depth and width of the positioning slots are between 2.5mm and 5mm, and the length is between 100mm and 300mm.

[0008] Preferably, a metal insert is installed on the mounting platform. The metal insert is a customized part embedded in the mounting platform. The surface of the metal insert is knurled with teeth and has grooves to prevent loosening. The height of the metal insert is consistent with the thickness of the mounting platform, which is h3, and the value range is h3∈(5,30) mm. The diameter of the center hole of the metal insert can be adjusted according to the size of the wind wheel, with a value between 5 mm and 20 mm. The maximum wall thickness of the insert can be between 2 mm and 10 mm.

[0009] Preferably, the outer cylindrical wall is connected to the blades of the wind wheel, the height of the outer cylindrical wall is h2, the range is h2≥50mm, the maximum diameter of the outer cylindrical wall is D1, the range is D1∈(70, 500)mm, and it has a certain draft angle θ, and the range of θ is 0.5°~2°; the inner cylindrical wall is connected to the V-shaped reinforcement rib, the inverted V-shaped reinforcement rib and the mounting platform, the height of the inner cylindrical wall is h2, the range is h2≥50mm, the maximum diameter of the inner cylindrical wall is D2, the range is D2∈(64, 480)mm, which is the same as the draft angle θ of the outer cylindrical wall, and the range of θ is 0.5°~2°.

[0010] Preferably, the hub wall thickness b between the outer cylindrical wall and the inner cylindrical wall is in the range of b=(D1-D2) / 2.

[0011] Preferably, the thickness of the V-shaped reinforcement rib and the inverted V-shaped reinforcement rib is 0.3 to 0.5 times the wall thickness b.

[0012] Preferably, the mounting platform is provided with a multifunctional hole, which is a circular hole, and the diameter of the multifunctional hole is D3, which has a value range of 0.8 to 0.9 times of D2, and a diameter of the multifunctional hole of 1 mm to 10 mm. The multifunctional hole can prevent defects such as shrinkage during injection molding or die casting, relieve stress concentration when the wind wheel is subjected to force, and add a balancing block when the wind wheel is dynamically balanced.

[0013] Preferably, the mounting platforms at both ends are evenly staggered, the number of mounting platforms at each end ranges from 3 to 7, the distance between the mounting platform and the end surface of the hub is a, ranging from a∈(3,20) mm, and the outer diameter of the metal insert is D4, ranging from D4∈(55,300) mm.

[0014] The beneficial effects of the utility model are as follows: the wind wheel hub structure has the characteristics of simple structure, convenient production, light weight, safety and reliability, flexible installation, etc. The wind wheel hub has two different installation methods: blowing installation and suction installation. Its application is not limited to wind wheels of a certain size, and it can be enlarged or reduced according to the size of the wind wheel, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of the wind wheel hub blowing installation method.

[0016] Figure 2 It is a structural schematic diagram of the wind wheel hub suction installation method.

[0017] Figure 3 It is the key structure of the wind wheel hub.

[0018] In the figure: 1. outer cylindrical wall; 2. inner cylindrical wall; 3. metal insert; 4. V-shaped reinforcement rib; 5. positioning column; 6. slot; 7. multi-function hole; 8. installation platform. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0020] Example: Figure 1 As shown, a wind wheel hub structure includes an outer cylindrical wall surface 1, an inner cylindrical wall surface 2, a metal insert 3, a V-shaped reinforcement rib 4, an inverted V-shaped reinforcement rib, a positioning column 5, a positioning slot 6, a multifunctional hole 7, and a mounting platform 8. A plurality of V-shaped reinforcement ribs and inverted V-shaped reinforcement ribs are fixedly connected along the circumference of the inner cylindrical wall surface, the inverted V-shaped reinforcement ribs and the V-shaped reinforcement ribs are symmetrical to each other, and a plurality of V-shaped reinforcement ribs and inverted V-shaped reinforcement ribs are staggered and connected to each other. The middle of the bottom of the V-shaped reinforcement rib and the middle of the top of the inverted V-shaped reinforcement rib are respectively fixedly installed with mounting platforms, which are used to connect the wind wheel and the motor, fit with the motor flange, and can be installed by blowing or sucking air. The outer cylindrical wall and the inner cylindrical wall have a certain thickness to ensure the structural strength and have a certain draft angle; the V-shaped reinforcement ribs and the inverted V-shaped reinforcement ribs have a certain thickness; a positioning column is correspondingly arranged on each mounting platform in the middle of the bottom of the V-shaped reinforcement rib and the middle of the top of the inverted V-shaped reinforcement rib, and the positioning column is used to position the hub when it is installed on the motor flange; the V-shaped reinforcement rib and the inverted V-shaped reinforcement rib are respectively provided with positioning slots, and the positioning slots are used to guide and position the protective cover accessories when the wind wheel is installed with the protective cover accessories; the mounting platform is provided with multifunctional holes, which have the functions of preventing defects such as shrinkage during injection molding or die casting, releasing stress when the wind wheel is damaged, and adding balance blocks when the wind wheel is dynamically balanced. The wind wheel hub structure has the characteristics of simple structure, convenient production, light weight, safety and reliability, flexible installation, etc. Its application is not limited to a certain size of wind wheel, and can be enlarged or reduced according to the size of the wind wheel, and has a wide range of application prospects.

[0021] in, Figure 1 and Figure 2There are two different installation methods for the wind rotor hub. The installation implementation methods are the same. When installed on the motor flange, the mounting surface fits the electrode flange, and the positioning columns on the wind rotor hub pass through the corresponding positioning holes on the motor flange to achieve installation positioning, and align the metal insert holes with the motor flange holes. The fasteners pass through the holes on the metal insert and the motor flange holes to connect.

[0022] in, Figure 3 A wind wheel hub structure that satisfies a certain description in the claims is specifically illustrated. The height of the outer cylindrical wall is h3=150mm, the maximum diameter of the outer cylindrical wall is D1=300mm, and the draft angle θ=1°; the height of the inner cylindrical wall is h3=150mm, the maximum diameter of the inner cylindrical wall is D2=280mm, the draft angle θ=1°, and the hub wall thickness is b=10mm; the number of metal inserts is 7, the insert height is h3=20mm, the insert center hole diameter is 15mm, and the maximum insert wall thickness is 5mm; the thickness of the V-shaped reinforcement rib is 5mm; the height of the positioning column is a=10mm, the slot width and depth of the card slot are both 5mm, and the slot length is 200mm; the circular diameter of the multifunctional hole is D3=250mm, and the diameter of the multifunctional hole is 5mm; the number of mounting platforms at each end of the hub is 7, and the total number of both ends is 14. The distance between the mounting platform and the end face of the hub is a=10mm, and a metal insert is embedded in the mounting platform, and the diameter of the position of the insert is D4=220mm.

[0023] At this point, the important structures and important dimensions of the wind wheel hub have been determined, and the remaining parts can refer to the appearance shown in Figures 1 to 3.

[0024] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A wind wheel hub structure, comprising an outer cylindrical wall surface and an inner cylindrical wall surface, characterized in that: A plurality of V-shaped reinforcement ribs and inverted V-shaped reinforcement ribs are fixedly connected along the circumference of the inner cylindrical wall, the inverted V-shaped reinforcement ribs and the V-shaped reinforcement ribs are symmetrical to each other, and the plurality of V-shaped reinforcement ribs and inverted V-shaped reinforcement ribs are staggered and connected to each other. A mounting platform is fixedly installed in the middle of the bottom of the V-shaped reinforcement rib and in the middle of the top of the inverted V-shaped reinforcement rib respectively, and the mounting platform is used to connect the wind wheel and the motor and fits with the motor flange.

2. A wind wheel hub structure according to claim 1, characterized in that: A positioning column is correspondingly arranged on each mounting platform in the middle of the bottom of the V-shaped reinforcement rib and in the middle of the top of the inverted V-shaped reinforcement rib. The positioning column is used for positioning when the wheel hub is installed on the motor flange. The height of the positioning column is a, and the value range is a∈(5,10) mm.

3. A wind wheel hub structure according to claim 1, characterized in that: The V-shaped reinforcement ribs and the inverted V-shaped reinforcement ribs are respectively provided with positioning slots, which are used to guide and position the protective cover accessories when the wind wheel is installed with the protective cover accessories. The depth and width of the positioning slots are between 2.5mm and 5mm, and the length is between 100mm and 300mm.

4. A wind wheel hub structure according to claim 1, characterized in that: A metal insert is installed on the mounting platform. The metal insert is a customized part embedded in the mounting platform. The surface of the metal insert is knurled with teeth and has grooves to prevent loosening. The height of the metal insert is consistent with the thickness of the mounting platform, which is h3, and the value range is h3∈(5,30) mm. The diameter of the center hole of the metal insert can be adjusted according to the size of the wind wheel, and the value is between 5 mm and 20 mm. The maximum wall thickness of the insert can be between 2 mm and 10 mm.

5. The wind wheel hub structure according to claim 1, characterized in that: The outer cylindrical wall is connected to the blades of the wind wheel, the height of the outer cylindrical wall is h2, the range is h2≥50mm, the maximum diameter of the outer cylindrical wall is D1, the range is D1∈(70, 500)mm, and it has a certain draft angle θ, and the range of θ is 0.5°~2°; the inner cylindrical wall is connected to the V-shaped reinforcement rib, the inverted V-shaped reinforcement rib and the mounting platform, the height of the inner cylindrical wall is h2, the range is h2≥50mm, the maximum diameter of the inner cylindrical wall is D2, the range is D2∈(64, 480)mm, which is the same as the draft angle θ of the outer cylindrical wall, and the range of θ is 0.5°~2°.

6. A wind wheel hub structure according to claim 5, characterized in that: The hub wall thickness b between the outer cylindrical wall and the inner cylindrical wall is in the range of b=(D1-D2) / 2.

7. A wind wheel hub structure according to claim 6, characterized in that: The thickness of the V-shaped reinforcement rib and the inverted V-shaped reinforcement rib is 0.3 to 0.5 times of the wall thickness b.

8. The wind wheel hub structure according to claim 5, characterized in that: The mounting platform is provided with a multifunctional hole, which is a circular hole. The diameter of the multifunctional hole is D3, and the value range is between 0.8 and 0.9 times of D2. The diameter of the multifunctional hole is between 1 mm and 10 mm.

9. A wind wheel hub structure according to claim 4, characterized in that: The mounting platforms at both ends are evenly staggered, the number of mounting platforms at each end ranges from 3 to 7, the distance between the mounting platform and the end surface of the hub is a, ranging from a∈(3,20) mm, and the outer diameter of the metal insert is D4, ranging from D4∈(55,300) mm.

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