A plug-in transmission structure convenient to disassemble and a vertical axis wind turbine

Abstract

The utility model discloses a pair of plug-in transmission structure and vertical shaft breeze generator convenient to dismount, including fan blade middle axle, inner joint, power generation disc and outer joint, the outside of inner joint forms and has the insertion part, and the input shaft of outer joint and power generation disc is fixedly connected, is provided with the insertion groove of shape adaptation with insertion part on outer joint, and inner joint and insertion groove insert fit cooperation, this pair of plug-in transmission structure and vertical shaft breeze generator convenient to dismount through increasing inner joint at the end of original fan blade middle axle, and forms insertion part on the outside of inner joint, so that insertion part can be inserted together with insertion groove, thereby will fan blade middle axle and power generation disc transmission connection, need not utilize the insertion part and insertion groove fixed with the dowel insertion, and the torsion is conducted to power generation disc through insertion part together with insertion groove insert, and the structural strength of insertion part is high, can avoid its fracture in the process of torsion conduction.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, specifically to a plug-in transmission structure that is easy to assemble and disassemble and a vertical axis micro wind turbine. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current (AC). The working principle of a wind turbine is relatively simple: the wind turbine rotates under the influence of wind, converting the kinetic energy of the wind into the mechanical energy of the turbine shaft. The generator, driven by the turbine shaft, then rotates to generate electricity. Wind power generation utilizes wind power to rotate the turbine blades, and then uses a speed increaser to increase the rotational speed, thereby driving the generator to produce electricity. Based on current wind turbine technology, a light breeze of approximately three meters per second is sufficient to begin generating electricity.

[0003] Existing wind turbines typically consist of blades, a base, a generator disk, and a central shaft. The generator disk is mounted on the base, and the blades are mounted on the side of the central shaft. One end of the central shaft is connected to the generator disk via a transmission structure. The conventional transmission connection is a pin connection, which has two drawbacks: first, the pin itself bears the load to transmit power, which poses a risk of breakage at the joint under instantaneous high loads and high torques; second, disassembly and assembly are inconvenient. During disassembly, the pin must be removed from the main shaft of the blades before the main shaft can be separated from the generator disk. However, due to the miniaturization of existing wind turbines, the internal operating space is limited. Workers need to remove the components associated with the main shaft of the blades before they can remove the pin from the main shaft to separate the main shaft from the generator disk, making replacement and maintenance of the generator disk inconvenient. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, one of the objectives of this utility model is to invent a plug-in transmission structure that facilitates disassembly and assembly of the generator panel and the central shaft of the wind turbine blade, while avoiding the breakage of the connecting parts during the transmission of torque by the central shaft of the wind turbine blade.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] A plug-in transmission structure that is easy to assemble and disassemble includes,

[0007] Wind turbine blade central axis;

[0008] An inner connector, wherein a plug portion is formed on the outer side of the inner connector;

[0009] Generator panel;

[0010] An external connector is fixedly connected to the input shaft of the generator panel. The external connector is provided with a slot that matches the shape of the insertion part. The internal connector is inserted into the slot to facilitate the transmission connection between the central shaft of the fan blade and the input shaft of the generator panel.

[0011] Furthermore, the connector is arranged in a cross shape, triangle, or polygon.

[0012] Furthermore, the end face edge of the insertion part placed inside the slot has an arc-shaped surface.

[0013] Furthermore, the inner connector is provided with a mounting hole that extends along the axial direction of the inner connector, and the fan blade shaft is inserted into the mounting hole.

[0014] Furthermore, the connection end between the fan blade central shaft and the mounting hole is oval-shaped, and the mounting hole is oval-shaped to fit the fan blade central shaft.

[0015] Furthermore, it also includes a locking pin. The inner connector has a first insertion hole that is horizontally penetrating the inner connector on its side. The fan blade shaft has a second insertion hole at a position corresponding to the first insertion hole on its surface. The locking pin passes through the first insertion hole and the second insertion hole in sequence to connect the inner connector and the fan blade shaft as a whole.

[0016] Furthermore, a gap is formed between the bottom of the insertion part and the bottom of the slot.

[0017] The second objective of this utility model is achieved through the following technical solution:

[0018] A vertical axis micro wind generator includes the aforementioned easy-to-disassemble plug-in transmission structure.

[0019] Beneficial effects:

[0020] In this invention, an inner connector is added to the end of the original wind turbine shaft, and a plug-in part is formed on the outside of the inner connector. This allows the plug-in part to be inserted into the slot, thereby connecting the wind turbine shaft to the generator disk. This eliminates the need for pins to fix the plug-in part to the slot, making disassembly and installation convenient. Furthermore, compared to the existing wind turbine shaft that transmits torque to the generator disk through pins, in this invention, torque is transmitted to the generator disk through the plug-in part that is inserted into the slot. The plug-in part has high structural strength, which can prevent it from breaking during torque transmission. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a plug-in transmission structure that is easy to assemble and disassemble according to the present invention.

[0022] Figure 2This is a cross-sectional view of a plug-in transmission structure that is easy to assemble and disassemble according to this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the central shaft of the fan blade, which is an easy-to-disassemble plug-in transmission structure according to this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of a plug-in transmission structure generator panel of this utility model that is easy to assemble and disassemble; reference numerals:

[0026] 10. Fan blade central shaft; 20. Inner connector; 201. Plug-in part; 202. Mounting hole; 203. First plug hole; 204. Second plug hole; 30. Generator panel; 40. Outer connector; 401. Slot; 50. Locking pin; 60. Base. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figure 1-5 As shown, a plug-in transmission structure that is easy to assemble and disassemble includes,

[0032] 10mm central axis for wind turbine blades;

[0033] An inner connector 20, wherein a plug portion 201 is formed on the outer side of the inner connector 20;

[0034] Generator panel 30;

[0035] An external connector 40 is fixedly connected to the input shaft of the generator disk 30. The external connector 40 is provided with a slot 401 that is adapted to the shape of the insertion part 201. The internal connector 20 is inserted into the slot 401 to facilitate the transmission connection between the wind turbine central shaft 10 and the input shaft of the generator disk 30.

[0036] Compared to the existing method of inserting the wind turbine shaft 10 into the external connector 40 fixed to the wind turbine shaft 10 of the generator disk 30 and then fixing it with a pin, in this utility model, an internal connector 20 is added to the end of the original wind turbine shaft 10, and a plug-in part 201 is formed on the outside of the internal connector 20. The plug-in part 201 can be inserted into the slot 401, thereby connecting the wind turbine shaft 10 and the generator disk 30 through transmission, without the need to use a pin to fix the plug-in part 201 to the slot 401, which makes disassembly and installation convenient. Moreover, compared to the existing method of transmitting torque to the generator disk 30 through the wind turbine shaft 10 via a pin, in this utility model, the torque is transmitted to the generator disk 30 through the plug-in part 201 inserted into the slot 401. The plug-in part 201 has high structural strength and can prevent it from breaking during the transmission of torque.

[0037] Preferably, in order to facilitate the transmission of torque from the central shaft 10 of the fan blade to the generator disk 30, the plug-in part 201 can be arranged in a cross shape, triangle or polygon in this embodiment. With this arrangement, the torque of the central shaft 10 of the fan blade can be transmitted to the external connector 40 through the contact surface between the plug-in part 201 and the slot 401, and then to the input shaft of the generator disk 30.

[0038] Furthermore, to facilitate the alignment of the plug-in part 201 and the slot 401 during insertion and engagement, in this embodiment, the end face edge of the plug-in part 201 placed inside the slot 401 is formed with an arc-shaped surface. When the plug-in part 201 is inserted into the slot 401, it can slide into the slot 401 along the arc-shaped surface to complete the insertion and engagement of the plug-in part 201 and the slot 401.

[0039] Meanwhile, to facilitate the connection between the inner connector 20 and the fan blade central shaft 10, in this embodiment, a mounting hole 202 is provided on the inner connector 20. The mounting hole 202 extends along the axial direction of the inner connector 20. The fan blade central shaft 10 is inserted into the mounting hole 202, thereby connecting the fan blade central shaft 10 and the inner connector 20 together. Furthermore, to prevent relative rotation between the inner connector 20 and the fan blade central shaft 10 during rotation, in this embodiment, the connection end between the fan blade central shaft 10 and the mounting hole 202 is oval-shaped, and the mounting hole 202 is oval-shaped to fit the fan blade central shaft 10, thus ensuring that the fan blade central shaft 10 rotates smoothly. The inner connector 20 can rotate together with the fan blade shaft 10. At the same time, in order to prevent the fan blade shaft 10 from separating from the inner connector 20 during rotation, in this embodiment, a first insertion hole 203 is provided horizontally through the inner connector 20 on the side of the inner connector 20, and a second insertion hole 204 is provided on the surface of the fan blade shaft 10 corresponding to the first insertion hole 203. With the locking pin 50 provided, the locking pin 50 can pass through the first insertion hole 203 and the second insertion hole 204 in sequence, thereby connecting the inner connector 20 and the fan blade shaft 10 into one unit, so as to avoid the fan blade shaft 10 from separating from the inner connector 20 during rotation, and at the same time restrict the axial displacement of the inner connector 20.

[0040] In addition, to facilitate the separation of the generator panel 30 from the wind turbine central shaft 10 when the staff maintains the generator panel 30, a gap is formed between the bottom of the plug-in part 201 and the bottom of the slot 401 in this embodiment.

[0041] In this embodiment, the generator disk 30 is inserted into the chassis through an opening below the chassis of the vertical axis micro wind turbine. Then, the wind turbine central shaft 10 and other related structures are installed on the base 60 and connected to the generator disk 30. During disassembly and maintenance, the fixing screws between the generator disk 30 and the chassis need to be removed, and then the generator disk 30 is lifted upward to separate it from the chassis. During this process, the generator disk 30 will undergo axial displacement relative to the wind turbine central shaft 10, and the gap formed between the bottom of the insertion part 201 and the bottom of the slot 401 provides room for displacement between the generator disk 30 and the wind turbine central shaft 10, thereby facilitating the separation of the generator disk 30 from the base 60 by the operator. After the generator disk 30 is separated from the base 60, the generator disk 30 is rotated so that the protrusion on the generator disk 30 is misaligned with the mounting seat on the inner side of the chassis, so that the generator disk 30 can be removed from the chassis.

[0042] This utility model also discloses a vertical axis micro wind generator, including the above-mentioned easy-to-disassemble plug-in transmission structure.

[0043] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A plug-in transmission structure that is easy to assemble and disassemble, characterized in that: include, Wind turbine blade central axis; An inner connector, wherein a plug portion is formed on the outer side of the inner connector; Generator panel; An external connector is fixedly connected to the input shaft of the generator panel. The external connector is provided with a slot that matches the shape of the insertion part. The internal connector is inserted into the slot to facilitate the transmission connection between the central shaft of the fan blade and the input shaft of the generator panel.

2. The easy-to-assemble and disassemble plug-in transmission structure according to claim 1, characterized in that: The connector is arranged in a cross shape, triangle shape, or polygon shape.

3. The easy-to-assemble and disassemble plug-in transmission structure according to claim 1, characterized in that: The edge of the end face of the plug portion placed inside the slot has an arc-shaped surface.

4. The easy-to-assemble and disassemble plug-in transmission structure according to claim 1, characterized in that: The inner connector has a mounting hole that extends along the axial direction of the inner connector, and the fan blade shaft is inserted into the mounting hole.

5. The easy-to-assemble and disassemble plug-in transmission structure according to claim 4, characterized in that: The connection end between the central shaft of the fan blade and the mounting hole is oval-shaped, and the mounting hole is oval-shaped to fit the central shaft of the fan blade.

6. The easy-to-assemble and disassemble plug-in transmission structure according to claim 4, characterized in that: It also includes a locking pin. The inner connector has a first insertion hole that is horizontally penetrating the inner connector on its side. The fan blade shaft has a second insertion hole at the position corresponding to the first insertion hole on its surface. The locking pin passes through the first insertion hole and the second insertion hole in sequence to connect the inner connector and the fan blade shaft as one unit.

7. The easy-to-assemble and disassemble plug-in transmission structure according to claim 1, characterized in that: A gap is formed between the bottom of the plug and the bottom of the slot.

8. A vertical axis micro wind generator, characterized in that: Includes the plug-in transmission structure that is easy to assemble and disassemble, as described in any one of claims 1-7.

Images