Wind wheel

Abstract

The utility model discloses a wind wheel, which is connected to a flange part of a motor casing so as to be coaxially assembled on the periphery of the motor casing, the wind wheel comprises a hub and a fan blade, the hub is provided with two mounting parts which can be connected with the flange part in a matched manner, the two mounting parts are symmetrically arranged at two ends of the hub in the axial direction of the motor casing, the flange part is provided with a positioning hole, and the fan blade is arranged in the positioning hole. The mounting part is provided with a positioning boss matched with the positioning hole so as to position the flange part; the fan blades are arranged in the circumferential direction of the hub; when the flange part is connected with one of the mounting parts in a matched mode, the wind wheel is installed in an air suction mode. When the flange part is connected with the other mounting part in a matched mode, the wind wheel is installed in a blowing mode. By arranging the two same mounting parts, the limitation of wind wheel assembly is avoided; the flange part is provided with the positioning hole, and the mounting part is provided with the positioning boss matched with the positioning hole, so that the concentricity of the wind wheel and the motor rotor is ensured, vibration and noise are reduced, and the mounting precision and the mounting efficiency of the wind wheel and the motor are improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine. Background Technology

[0002] The current assembly of wind turbines and motors makes it difficult to ensure that the wind turbine and motor rotor are concentric. When the vibration of the assembled wind turbine does not meet the standard, it is often necessary to disassemble, adjust and reassemble, which is labor-intensive and time-consuming. Moreover, the existing assembly methods of wind turbines and motors usually only allow one of the two options: blowing and suction installation, which limits the assembly of wind turbines. In addition, the wind turbine is usually fixed to the rotor flange with screws. When the wind turbine is running, the screws are subjected to shearing forces, which increases the risk of screw breakage and can easily lead to damage to the wind turbine and motor.

[0003] Therefore, how to provide a wind turbine that at least partially solves the above-mentioned drawbacks is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a wind turbine that avoids the limitations of wind turbine assembly, enabling quick and accurate installation of the wind turbine while ensuring concentricity between the wind turbine and the motor rotor, reducing vibration and noise, and thus improving the installation accuracy and efficiency of the wind turbine and motor.

[0005] To achieve the above objectives, this utility model provides a wind turbine, which is coaxially mounted on the outer periphery of the motor housing via a flange portion connected to the motor housing. The wind turbine includes:

[0006] The hub has two mounting parts that can be connected to the flange, and the two mounting parts are symmetrically arranged at both ends of the hub in the axial direction of the motor housing. The flange has a positioning hole, and the mounting part has a positioning boss that fits the positioning hole to position the flange.

[0007] The fan blades are located around the circumference of the wheel hub.

[0008] Preferably, the hub further includes a plurality of first mounting holes arranged in a circumferential array on the mounting portion, the same first mounting hole penetrating one side of two mounting portions facing away from each other, and the axis of the first mounting hole being parallel to the axis of the motor housing.

[0009] Preferably, the flange portion is provided with a plurality of second mounting holes, which correspond one-to-one with the first mounting holes. The connector passes through the corresponding first and second mounting holes to fix the flange portion and the hub together.

[0010] Preferably, the positioning bosses are arranged in a circumferential array on the mounting part, and the extension direction of the positioning bosses is parallel to the axial direction of the motor housing.

[0011] Preferably, the locating boss and the first mounting hole are located on the same circumference of the mounting part, and two locating bosses are distributed on both sides of each first mounting hole.

[0012] Preferably, the positioning boss includes a guide portion away from the end of the wheel hub, the guide portion having a tapered structure, and the smaller end of the tapered structure being located at the end of the positioning boss.

[0013] Preferably, the length of the positioning boss in the axial direction of the motor housing is greater than the thickness of the positioning hole in the axial direction of the motor housing.

[0014] Preferably, the hub further includes through holes arranged in a circumferential array, the through holes being located between adjacent first mounting holes, between adjacent positioning bosses and first mounting holes, and between adjacent positioning bosses, and the extending direction of the through holes is parallel to the axial direction of the motor housing.

[0015] Preferably, the cross-section of the positioning boss perpendicular to its extension direction is circular, rectangular, elliptical, or waist-shaped.

[0016] Preferably, the second mounting hole is a flanged threaded hole, and the connecting part is a screw.

[0017] Compared to the aforementioned background technology, the wind turbine provided by this utility model is coaxially assembled to the outer periphery of the motor housing via a flange portion connected to the motor housing. The wind turbine includes a hub and blades. The hub has two mounting portions that can mate with the flange portion, and the two mounting portions are symmetrically arranged at both ends of the hub in the axial direction of the motor housing. The flange portion has positioning holes, and the mounting portions have positioning bosses that fit into the positioning holes to position the flange portion. The blades are arranged in the circumferential direction of the hub.

[0018] Specifically, the wind turbine hub includes two mounting parts that can mate with the flange. When the flange is connected to one of the mounting parts, the wind turbine is installed for suction; when the flange is connected to the other mounting part, the wind turbine is installed for blowing. By setting two identical mounting parts, the limitations of wind turbine assembly are avoided. The flange has positioning holes, and the mounting parts have positioning bosses that fit the positioning holes, which facilitates the installation of the flange to the preset position of the mounting parts. This allows for quick and accurate installation of the wind turbine while ensuring that the wind turbine and the motor rotor are concentric, reducing vibration and noise, and improving the installation accuracy and efficiency of the wind turbine and motor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the wind turbine provided in an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 Sectional view along AA;

[0022] Figure 3 A cross-sectional view of the motor housing provided in an embodiment of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the motor housing provided in an embodiment of the present utility model from another perspective;

[0024] Figure 5 This is a schematic diagram of another motor housing provided in an embodiment of the present utility model;

[0025] Figure 6 This is a structural schematic diagram of another motor housing from another perspective provided in an embodiment of the present utility model;

[0026] Figure 7 A schematic diagram of the assembled wind turbine and motor housing provided in an embodiment of this utility model;

[0027] Figure 8 for Figure 7 A cross-sectional view along FF.

[0028] in:

[0029] 100-Motor housing, 110-Flange, 111-Positioning hole, 112-Second mounting hole, 120-Shaft, 130-Permanent magnetic sheet, 140-Shaft sleeve, 150-Shaft sleeve hole;

[0030] 200-Hub, 210-Mounting part, 211-Positioning boss, 212-First mounting hole, 220-Through hole;

[0031] 300-Wind Blade;

[0032] 400-Connector. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" 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 indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0036] The purpose of this invention is to provide a wind turbine that avoids the limitations of wind turbine assembly, enabling quick and accurate installation of the wind turbine while ensuring concentricity between the wind turbine and the motor rotor, reducing vibration and noise, and thus improving the installation accuracy and efficiency of the wind turbine and motor.

[0037] Please see Figure 1 and Figure 2 To achieve the above objectives, this utility model provides a wind turbine, which is coaxially mounted on the outer periphery of the motor housing 100 via a flange portion 110 connected to the motor housing 100. The wind turbine includes a hub 200 and a blade 300.

[0038] The hub 200 is provided with two mounting portions 210 that can be connected to the flange portion 110, and the two mounting portions 210 are symmetrically arranged at both ends of the hub 200 in the axial direction of the motor housing 100. Figure 2 C in the figure represents the symmetrical plane of the two mounting parts 210. The flange part 110 is provided with a positioning hole 111, and the mounting part 210 is provided with a positioning boss 211 that fits the positioning hole 111 to position the flange part 110.

[0039] The fan blades 300 are arranged around the hub 200. Preferably, there are five fan blades 300, which are evenly arranged around the hub 200. The number of fan blades 300 can also be adjusted according to the actual situation, as long as the above purpose can be achieved.

[0040] The wind turbine hub 200 includes two mounting parts 210 that can be connected to the flange 110. When the flange 110 is connected to one of the mounting parts 210, the wind turbine is installed for suction; when the flange 110 is connected to the other mounting part 210, the wind turbine is installed for blowing. By setting two identical mounting parts 210, the limitations of wind turbine assembly are avoided. The flange 110 is provided with a positioning hole 111, and the mounting part 210 is provided with a positioning boss 211 that fits the positioning hole 111, which facilitates the installation of the flange 110 to the preset position of the mounting part 210. This allows for quick and accurate installation of the wind turbine while ensuring that the wind turbine and the motor rotor are concentric, reducing vibration and noise, and improving the installation accuracy and efficiency of the wind turbine and motor.

[0041] Please see Figure 5 and Figure 6 In some embodiments, the motor housing 100 is an integral structure, including the aforementioned flange portion 110, a housing portion located outside the permanent magnetic sheet 130, and a positioning portion for mounting the rotating shaft 120. The positioning portion is provided with a bushing hole 150 to facilitate the installation and positioning of the rotating shaft 120, thereby enabling the rotating shaft 120 to drive the motor housing 100 and the impeller connected to the motor housing 100 to rotate together.

[0042] Please see Figure 3 and Figure 4 In other embodiments, the motor housing 100 is a split structure, including a housing portion, a bushing 140 with a mounting hole at the top of the housing portion, and a flange portion 110 fitted onto the outer periphery of the bottom of the housing portion. The bushing 140 is hollow for mounting and positioning the rotating shaft 120. A permanent magnetic sheet 130 is disposed in a cavity inside the housing portion. The bushing 140 and the housing portion, as well as the flange portion 110 and the housing portion, are fixedly connected by welding. Figure 3 In this context, D refers to the weld between the bushing 140 and the housing, and E refers to the weld between the flange 110 and the housing. Alternatively, other methods can be used to achieve the fixed connection of the various parts of the split-type motor housing 100 as needed, as long as the above objectives are achieved.

[0043] Please see Figure 7 and Figure 8 It is understood that the hub 200 also includes a plurality of first mounting holes 212 arranged in a circumferential array on the mounting portion 210. The same first mounting hole 212 passes through the opposite side of two mounting portions 210, and the axis of the first mounting hole 212 is parallel to the axis of the motor housing 100.

[0044] By sharing a through-hole first mounting hole 212 between the two mounting parts 210, the number of first mounting holes 212 in the hub 200 is reduced, which facilitates the processing of the wind turbine hub 200. At the same time, the axis of the first mounting hole 212 is parallel to the axis of the motor housing 100, which facilitates the subsequent installation of the hub 200 to the motor housing 100 through the first mounting hole 212.

[0045] Correspondingly, the flange portion 110 has a circular structure, and the flange portion 110 is provided with a number of second mounting holes 112 in the circumference. The second mounting holes 112 correspond one-to-one with the first mounting holes 212, so that after the connector 400 passes through the corresponding first mounting holes 212 and second mounting holes 112, the flange portion 110 and the hub 200 can be fixedly connected.

[0046] To improve the installation efficiency of the connector 400, the end face of the first mounting hole 212 in this embodiment is preferably a stepped groove, and the second mounting hole 112 is a flanged threaded hole, that is, the end face of the second mounting hole 112 facing the first mounting hole 212 is a stepped boss. By installing the stepped boss into the stepped groove, the first mounting hole 212 and the second mounting hole 112 can be docked and positioned before the connector 400 passes through. At the same time, by the stepped boss abutting against the abutting surface of the stepped groove, it is easy for the flange 110 to press against the mounting part 210 of the hub 200. Then, the connection process between the flange 110 and the mounting part 210 is realized by the connector 400. The connector 400 is specifically a screw, so as to facilitate the installation and disassembly of the flange 110 and the mounting part 210.

[0047] The positioning bosses 211 are arranged in a circumferential array on the mounting part 210. The extension direction of the positioning bosses 211 is parallel to the axial direction of the motor housing 100. This arrangement makes it easy for the positioning bosses 211 to pass through the positioning holes 111 of the flange part 110 in a fixed direction.

[0048] In this embodiment, to facilitate the connection between the flange portion 110 and the mounting portion 210, the axial centers of the positioning boss 211 and the first mounting hole 212 are located on the same circumference of the mounting portion 210, and two positioning bosses 211 are distributed on both sides of each first mounting hole 212.

[0049] The flange 110 is installed and positioned by mounting it onto the corresponding positioning boss 211 through the positioning hole 111. Then, the stepped boss in the second mounting hole 112 is pressed into the stepped groove in the first mounting hole 212, so that the flange 110 and the mounting part 210 fit tightly together. Then, the connector 400 is inserted into the corresponding first mounting hole 212 and second mounting hole 112 to achieve a precise connection between the flange 110 and the mounting part 210. The positioning boss 211 and the positioning hole 111 are connected to transmit the motor torque to the wind turbine, so that the connector 400 is not subjected to impact and shear force, avoiding the risk of shearing breakage of the connector 400.

[0050] It should be noted that the length of the positioning boss 211 in the axial direction of the motor housing 100 is greater than the thickness of the positioning hole 111 in the axial direction of the motor housing 100, so that part of the positioning boss 211 protrudes through the end face of the flange portion 110 away from the mounting portion 210, thereby improving the torque transmission effect between the motor and the impeller.

[0051] Preferably, the mounting part 210 is provided with three first mounting holes 212, and the three first mounting holes 212 are evenly arranged along the circumference of the mounting part 210. Each first mounting hole 212 preferably has two positioning bosses 211 distributed on both sides. The same mounting part 210 is provided with three sets of six positioning bosses 211 to increase the positioning accuracy of the flange part 110. The number of first mounting holes 212 and positioning bosses 211 can be adjusted according to actual needs to achieve the above purpose.

[0052] To facilitate the mating process between the positioning boss 211 and the positioning hole 111, the positioning boss 211 includes a guide portion away from the end of the hub 200. The guide portion has a tapered structure, and the smaller end of the tapered structure is located at the end of the positioning boss 211. Since the cross-sectional area of ​​the smaller end of the tapered structure is smaller than the corresponding cross-sectional area of ​​the positioning hole 111, the end of the positioning boss 211 away from the mounting part 210 can easily enter the positioning hole 111. Preferably, the surface of the tapered structure is a smooth arc surface to reduce wear during the installation process.

[0053] In some embodiments, the length of the tapered structure along the extension direction of the positioning boss 211 is less than one-third of the overall length of the positioning boss 211 in its own extension direction.

[0054] In addition, the hub 200 also includes through holes 220 arranged in a circumferential array. The through holes 220 are located between adjacent first mounting holes 212, between adjacent positioning bosses 211 and first mounting holes 212, and between adjacent positioning bosses 211. The extending direction of the through holes 220 is parallel to the axial direction of the motor housing 100.

[0055] By setting the through hole 220, material can be removed to reduce material usage and lower raw material costs. On the other hand, the wall thickness of the wheel hub 200 is made uniform, reducing deformation during injection molding and increasing the stability of the wheel hub 200 during operation.

[0056] The cross-section of the positioning boss 211 perpendicular to its extension direction is circular, rectangular, elliptical, or waist-shaped.

[0057] The positioning hole 111 and the positioning boss 211 are adapted to each other in cross-section perpendicular to their own extension direction, so as to realize the positioning fit between the positioning hole 111 and the positioning boss 211 and the torque transmission between the motor and the impeller. No specific limitation is made here.

[0058] In summary, the wind turbine provided in this application has a hub 200 that is symmetrical about a symmetrical plane. Several positioning bosses 211 are evenly distributed on both mounting portions 210. The positioning bosses 211 have various cross-sectional shapes, such as circular, rectangular, elliptical, and oblong. The positioning bosses 211 correspond and cooperate with the positioning holes 111 on the flange portion 110, enabling accurate positioning and installation, ensuring concentricity between the wind turbine and the motor, and reducing vibration. Simultaneously, the positioning bosses 211 and the positioning holes 111 cooperate to transmit motor torque, preventing the connecting parts 400 from being subjected to shearing forces during wind turbine start-up, shutdown, and operation. Several connectors 400 pass through the hub 200. The connectors 400 lock the impeller to the flange 110 through the first mounting hole 212. If one mounting part 210 is for suction installation, the other mounting part 210 is for blowing installation. This setting can quickly and accurately install the impeller, ensure that the impeller and the motor rotor are concentric, reduce vibration and noise, and transmit the motor torque to the impeller. The connectors 400 are not subjected to impact and shear force, avoiding the risk of shearing breakage of the connectors 400.

[0059] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A wind turbine, coaxially mounted on the outer periphery of a motor housing via a flange portion connected to the motor housing, characterized in that, The wind turbine includes: The hub has two mounting parts that can be connected to the flange, and the two mounting parts are symmetrically arranged at both ends of the hub in the axial direction of the motor housing. The flange has a positioning hole, and the mounting part has a positioning boss that fits the positioning hole to position the flange. The fan blades are positioned circumferentially on the hub.

2. The wind turbine according to claim 1, characterized in that, The hub also includes a plurality of first mounting holes arranged in a circumferential array on the mounting portion. The same first mounting hole penetrates two opposite sides of the mounting portions, and the axis of the first mounting hole is parallel to the axis of the motor housing.

3. The wind turbine according to claim 2, characterized in that, The flange portion is provided with a plurality of second mounting holes, each corresponding to a first mounting hole. The connector passes through the corresponding first mounting hole and second mounting hole to fix the flange portion and the hub together.

4. The wind turbine according to claim 2, characterized in that, The positioning bosses are arranged in a circular array on the mounting part, and the extending direction of the positioning bosses is parallel to the axial direction of the motor housing.

5. The wind turbine according to claim 4, characterized in that, The positioning boss and the first mounting hole are located on the same circumference of the mounting part, and two positioning bosses are distributed on both sides of each first mounting hole.

6. The wind turbine according to claim 4, characterized in that, The positioning boss includes a guide portion away from one end of the wheel hub. The guide portion has a tapered structure, and the smaller end of the tapered structure is located at the end of the positioning boss.

7. The wind turbine according to claim 4, characterized in that, The length of the positioning boss in the axial direction of the motor housing is greater than the thickness of the positioning hole in the axial direction of the motor housing.

8. The wind turbine according to claim 2, characterized in that, The hub also includes through holes arranged in a circumferential array. The through holes are located between adjacent first mounting holes, between adjacent positioning bosses and first mounting holes, and between adjacent positioning bosses, and the extending direction of the through holes is parallel to the axial direction of the motor housing.

9. The wind turbine according to claim 4, characterized in that, The cross-section of the positioning boss perpendicular to its extension direction is circular, rectangular, elliptical, or waist-shaped.

10. The wind turbine according to claim 3, characterized in that, The second mounting hole is a flanged threaded hole, and the connecting component is specifically a screw.

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