Accelerator and vertical axis wind generator with automatic correction of the roundness of the gear ring

Abstract

The utility model discloses an accelerator and vertical shaft breeze generator of automatic correction gear ring roundness, including inner gear ring and accelerator shell. Among them, the inner gear ring inside car is made with internal gear, and the inner gear ring adopts plastic material quality;The shape of the hollow cavity of accelerator shell and the shape of inner gear ring match, and the accelerator shell adopts metal material quality. The inner gear ring is closely combined in the accelerator shell, and the inner gear ring is limited and always corrects roundness. In the utility model, the running noise of plastic inner gear ring is small, and the mute effect is good;The metal accelerator shell has enough strength and protection effect. When the internal gear wears, the plastic inner gear ring can be directly replaced, and the replacement cost is lower. At the same time, since the inner gear ring is always limited by the accelerator shell, the inner gear ring can always maintain the original roundness, realize the automatic correction of roundness, make the internal planetary gear run stably, and reduce the failure risk of accelerator.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, specifically to an accelerator that automatically corrects the roundness of the gear ring and a vertical axis micro wind generator. Background Technology

[0002] Wind turbines can be mainly divided into two categories: horizontal axis wind turbines and vertical axis wind turbines. Vertical axis wind turbines are those whose rotor axis is perpendicular to the ground or the mounting plane. Vertical axis wind turbines are characterized by their compact structure, flexibility in adapting to wind direction changes, and low starting wind speed.

[0003] A wind turbine uses wind power to convert the mechanical energy generated by the rotation of wind blades into electrical energy. More specifically, the wind blades rotate when acted upon by airflow, and this rotation is transmitted to the central shaft of the blades. The central shaft is connected to the generator inside the equipment, providing rotational power to the generator. The rotor inside the generator moves relative to the stator, cutting magnetic field lines, generating a corresponding induced electromotive force, thereby realizing the conversion of mechanical energy into electrical energy.

[0004] In the early days, wind turbines had a relatively simple transmission method: the central shaft of the wind turbine blades was directly connected to the rotor inside the generator. In this way, when the wind power output was one unit of electricity, the generator would store and utilize one unit of electricity. In the later stages, multi-stage gear transmissions were used to amplify the output and achieve a larger transmission ratio, so that when the wind power output was one unit of electricity, the stored and utilized electricity was many times greater.

[0005] In vertical-axis micro wind turbines, an accelerator can be added between the turbine's central shaft and the generator. A planetary gear system is ideal for the accelerator's transmission mechanism. While metal is conventionally used for the gears, this results in high transmission noise and replacement costs. Previously, the internal gear ring was machined as a single piece into the accelerator housing. When the internal gear wore out, the entire accelerator housing had to be replaced. Using a plastic internal gear ring could solve this problem relatively well. However, due to its inherent properties, plastic is prone to deformation after cold cutting, especially circular plastic parts like the internal gear ring. After cooling and molding, the internal gear ring easily deforms into an elliptical or near-circular shape. This deformation directly affects the rotation of the planetary gears (preventing them from normal revolution), increasing the risk of planetary gear system failure and necessitating replacement. In vertical-axis wind turbines, accelerator disassembly is cumbersome, requiring disassembly layer by layer from top to bottom or bottom to top to remove the accelerator, resulting in high maintenance and replacement costs. Utility Model Content

[0006] To overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide an accelerator that automatically corrects the roundness of the gear ring, and the other objective is to provide a vertical axis micro wind generator including such an accelerator, which can solve the problem that the circular plastic inner gear ring inside the accelerator is prone to deformation, thus causing the accelerator to fail.

[0007] This utility model is achieved through the following technical solution:

[0008] An accelerator for automatically correcting the roundness of a gear ring includes: an internal gear ring, on the inner sidewall of which an internal gear is machined, and the outer side of which is cylindrical; the internal gear ring is made of plastic; an accelerator housing, the accelerator housing having a cylindrical hollow cavity whose shape matches the shape of the internal gear ring; the accelerator housing is made of metal; the internal gear ring is disposed within the hollow cavity of the accelerator housing, and the outer side of the internal gear ring is tightly fitted against the inner sidewall of the hollow cavity of the accelerator housing, so that the internal gear ring is limited by the accelerator housing and its roundness is constantly corrected.

[0009] Furthermore, a number of positioning ribs are protruding on the outer side surface of the internal gear ring, and a number of positioning grooves are correspondingly recessed on the inner side wall of the accelerator housing; the positioning ribs are inserted into the positioning grooves along the axial direction so that the internal gear ring and the accelerator housing are fixed relative to each other in the radial direction.

[0010] Furthermore, the accelerator housing is made of a lightweight, rust-resistant metal material.

[0011] Furthermore, the accelerator housing is a stainless steel housing or an aluminum alloy housing.

[0012] Furthermore, the accelerator also includes planetary gears and a sun gear; multiple planetary gears mesh with the internal gear of the internal gear ring and revolve and rotate around the internal gear ring; the sun gear simultaneously meshes with each of the planetary gears to rotate.

[0013] Furthermore, the planetary gears are made of plastic.

[0014] Furthermore, the sun gear is made of plastic.

[0015] Furthermore, a mounting flange protrudes from the outer periphery of the hollow cavity of the accelerator housing, and the mounting flange has several connecting through holes for mounting fasteners.

[0016] A vertical axis micro wind generator, the vertical axis micro wind generator including the aforementioned accelerator that automatically corrects the roundness of the gear ring.

[0017] Compared with existing technologies, the beneficial effects that this utility model can achieve are as follows:

[0018] (1) The internal gear ring and the accelerator housing adopt a separate structure: the internal gear ring is made of plastic, which has low noise and good quietness during operation; the accelerator housing is made of metal, which has sufficient strength and protection as the shell part. Compared with the previous method of directly machining the internal gear inside the accelerator housing, this utility model has better quietness, and when the internal gear wears out, the plastic internal gear ring can be directly replaced without replacing the entire metal accelerator housing, thus reducing the cost of replacement and maintenance.

[0019] (2) After the internal gear ring is installed into the accelerator housing, the plastic internal gear ring may have a tendency to deform after processing and cold cutting. However, since it is attached to the inside of the metal accelerator housing and is always limited by the cylindrical hollow cavity of the accelerator housing, the internal gear ring can always maintain its original roundness, realize automatic roundness correction, and enable the planetary gear inside to always run smoothly, reducing the risk of accelerator failure. Attached Figure Description

[0020] Figure 1 The diagram shows the assembly of the internal gear ring and the accelerator housing.

[0021] Figure 2 As shown Figure 1 Top view;

[0022] Figure 3 The image shown is an exploded view of the internal gear ring and the accelerator housing.

[0023] Figure 4 The image shown is another exploded view of the internal gear ring and the accelerator housing;

[0024] Figure 5 The diagram shown is a structural schematic of the accelerator casing;

[0025] Figure 6 The diagram shown is a structural schematic of an internal gear ring.

[0026] Figure 7 The diagram shows the assembly of the planetary gear system inside the accelerator housing.

[0027] Figure 8 As shown Figure 7 Top view.

[0028] In the diagram: 10. Internal gear ring; 11. Positioning rib; 20. Accelerator housing; 21. Positioning groove; 22. Mounting flange; 30. Planetary gear; 40. Sun gear. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] This invention discloses an accelerator for automatically correcting the roundness of a gear ring, which can be applied to a vertical axis micro wind turbine. The accelerator is typically positioned between the wind turbine's central shaft and the generator. When the wind turbine is acted upon by airflow, it drives the central shaft to rotate. The central shaft provides rotational power to the generator, while the accelerator, located between the central shaft and the generator, amplifies the output through an internal gear system, thus achieving an acceleration effect. For example, when the wind turbine outputs one unit of electricity, the generator can store and utilize multiple units of electricity.

[0034] See Figures 1-4This utility model includes an internal gear ring 10 and an accelerator housing 20. The internal gear ring 10 has an internal gear machined on its inner sidewall, and its outer side is cylindrical; the internal gear ring 10 is made of plastic. The accelerator housing 20 has a cylindrical hollow cavity whose shape matches that of the internal gear ring 10; the accelerator housing 20 is made of metal. The internal gear ring 10 is disposed inside the hollow cavity of the accelerator housing 20, and its outer surface is tightly fitted to the inner sidewall of the hollow cavity, so that the plastic internal gear ring 10 is limited by the metal accelerator housing 20 to continuously correct its roundness.

[0035] In this invention, the internal gear ring 10 and the accelerator housing 20 are separate structures: the internal gear ring 10 is made of plastic, resulting in low noise and good quiet operation; the accelerator housing 20 is made of metal, providing sufficient strength and protection as the casing. Compared to the previous method of directly machining the internal gear inside the accelerator housing 20, this invention offers better noise reduction, and when the internal gear wears out, the plastic internal gear ring 10 can be directly replaced without replacing the entire metal accelerator housing 20, thus reducing maintenance costs.

[0036] Meanwhile, after the internal gear ring 10 is installed into the accelerator housing 20, the plastic internal gear ring 10 may have a tendency to deform after processing and cold cutting. However, since it is attached to the inside of the metal accelerator housing 20 and is always limited by the cylindrical hollow cavity of the accelerator housing 20, the internal gear ring 10 can always maintain its original roundness, realize automatic roundness correction, and enable the planetary gear 30 inside it to always run smoothly, reducing the risk of accelerator failure.

[0037] To facilitate guiding the internal gear ring 10 for insertion into the accelerator housing 20, and to prevent rotation of the internal gear ring 10 within the accelerator housing 20, preferably, see [reference needed]. Figure 6 The outer surface of the internal gear ring 10 is also provided with a plurality of positioning ribs 11, which are evenly arranged along the outer side of the internal gear ring 10; see reference Figure 5 Correspondingly, a plurality of positioning grooves 21 are recessed on the inner wall of the accelerator housing 20, and the number and position of the positioning grooves 21 correspond one-to-one with the positioning ribs 11. (See reference...) Figures 3-4 The positioning rib 11 is inserted into the positioning groove 21 along the axial direction, thereby fixing the internal gear ring 10 and the accelerator housing 20 in the radial direction, so that the internal gear ring 10 will not rotate.

[0038] Preferably, the accelerator housing 20 is made of a lightweight, rust-resistant metal material. The lightweight nature allows for a smaller load on the blades, smoother rotation, and higher power generation efficiency; the rust-resistant nature is beneficial because the wind turbine may operate outdoors for extended periods, being more susceptible to the effects of rain and fog. More preferably, the accelerator housing 20 can be made of stainless steel or aluminum alloy.

[0039] Preferably, see Figures 7-8 The accelerator employs a planetary gear system as its transmission mechanism. It also includes planetary gears 30 and a sun gear 40. Multiple planetary gears 30 mesh with the internal gear of the internal gear ring 10, revolving and rotating around the internal gear ring 10. The sun gear 40 simultaneously meshes with each planetary gear 30 to rotate. The fan blade shaft, serving as the power input shaft, is connected to the planetary gear 30 support, driving the planetary gears 30 to rotate around the internal gear ring 10 and simultaneously driving the sun gear 40 to rotate. The sun gear 40 is connected to the power output shaft for outputting the amplification factor.

[0040] More preferably, the planetary gear 30 can be made of plastic. Since the planetary gear 30 is fitted to both the internal gear ring 10 and the sun gear 40, the plastic planetary gear 30 can achieve a quiet operation and has low replacement cost. Similarly, the sun gear 40 can also be made of plastic, which can also achieve the same effect of quiet operation and low replacement cost.

[0041] Preferably, see Figure 5 The accelerator housing 20 also has a mounting flange 22 protruding in the outer circumferential direction. The mounting flange 22 has several connecting through holes for mounting fasteners, which are used to fix the accelerator to other parts of the equipment, such as fixing the accelerator to the top of the generator.

[0042] This utility model also discloses a vertical axis micro wind generator, which includes the aforementioned accelerator for automatically correcting the roundness of the gear ring. Any vertical axis micro wind generator that uses the same or substantially the same accelerator should be within the protection scope of this utility model.

[0043] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An accelerator for automatically correcting the roundness of a gear ring, characterized in that, include: An internal gear ring, wherein an internal gear is machined on the inner sidewall of the internal gear ring, and the outer side of the internal gear ring is a cylindrical surface; the internal gear ring is made of plastic. The accelerator housing has a cylindrical hollow cavity inside, the shape of which matches the shape of the internal gear ring; the accelerator housing is made of metal. The internal gear ring is disposed within the hollow cavity of the accelerator housing, and the outer surface of the internal gear ring is tightly fitted to the inner wall of the hollow cavity of the accelerator housing, so that the internal gear ring is limited by the accelerator housing and its roundness is always corrected.

2. The accelerator for automatically correcting the roundness of the gear ring as described in claim 1, characterized in that, The outer surface of the internal gear ring is provided with several positioning ribs, and the inner sidewall of the accelerator housing is provided with several corresponding positioning grooves; the positioning ribs are inserted into the positioning grooves along the axial direction so that the internal gear ring and the accelerator housing are fixed relative to each other in the radial direction.

3. The accelerator for automatically correcting the roundness of the gear ring as described in claim 1, characterized in that, The accelerator casing is made of lightweight, rust-resistant metal material.

4. The accelerator for automatically correcting the roundness of the gear ring as described in claim 3, characterized in that, The accelerator housing is made of stainless steel or aluminum alloy.

5. The accelerator for automatically correcting the roundness of the gear ring as described in claim 1, characterized in that, The accelerator further includes planetary gears and a sun gear; multiple planetary gears mesh with the internal gear of the internal gear ring and revolve and rotate around the internal gear ring; the sun gear simultaneously meshes with each of the planetary gears to rotate.

6. The accelerator for automatically correcting the roundness of the gear ring as described in claim 5, characterized in that, The planetary gears are made of plastic.

7. The accelerator for automatically correcting the roundness of the gear ring as described in claim 5, characterized in that, The sun gear is made of plastic.

8. The accelerator for automatically correcting the roundness of the gear ring as described in claim 1, characterized in that, The hollow cavity of the accelerator housing is also provided with a mounting flange protruding from its outer periphery, and the mounting flange is provided with a number of connecting through holes for mounting fasteners.

9. A vertical axis micro wind generator, characterized in that, The vertical axis micro wind turbine includes an accelerator for automatically correcting the roundness of the gear ring as described in any one of claims 1 to 8.

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