Horizontal-axis wind driven generator

Abstract

The utility model belongs to the technical field of generators, and discloses a horizontal-axis wind driven generator which comprises a tower body, a mounting seat is rotatably mounted at the upper end of the tower body, and a wind power main shaft is rotatably mounted in the middle of the mounting seat; the two ends of the wind power main shaft extend to the two outer sides of the mounting base correspondingly, a wind wheel is fixedly mounted at one end of the wind power main shaft, a power generation transmission box is fixedly mounted at the end, away from the wind wheel, of the mounting base, the other end of the wind power main shaft extends into the power generation transmission box, and multiple generators are fixedly mounted on the left side face and the right side face of the power generation transmission box correspondingly. The driving end of the generator extends into the power generation transmission box and is in transmission connection with the wind power main shaft through a gear transmission assembly. The integral structure of the wind driven generator is simple, the integral structure of the wind driven generator is optimized, the wind driven generator is convenient to assemble and install, a transmission part is not easy to damage, the working stability is further improved, the fault problem is avoided, and the power generation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically, it relates to a horizontal axis wind turbine generator. Background Technology

[0002] Currently, there are three main types of horizontal axis wind turbines: the first is the direct-drive horizontal axis wind turbine; the second is the high-speed horizontal axis wind turbine using a multi-stage parallel shaft gear speed-increasing mechanism; and the third is the semi-direct-drive horizontal axis wind turbine using a planetary speed-changing mechanism. All three types of wind turbines are characterized by their large overall size and weight, complex overall structure, high production difficulty, and high cost.

[0003] There is another type of wind turbine in the prior art. Chinese utility model patent application number CN202310830756.8 discloses an ultra-high power horizontal axis wind turbine and its usage method. The ultra-high power horizontal axis wind turbine includes a tower body, a base on the tower body, a wind turbine main shaft rotatably mounted on the base, one end of the wind turbine main shaft extending to the outside of the base and fixedly connected to a wind turbine, and at least one set of power generation devices installed on the base. The end of the wind turbine main shaft away from the wind turbine is connected to the power generation devices for transmission. The rotation of the wind turbine main shaft drives the power generation devices to perform power generation operations.

[0004] The aforementioned existing wind turbines are equipped with multiple generators arranged in a ring and spaced apart, and the multiple generators are connected in parallel to generate electricity. The wind turbine drives the wind turbine main shaft to rotate under the blowing of natural wind, and the wind turbine main shaft drives the gear ring to rotate. The gear ring drives multiple generators to generate electricity through multiple meshing shaft gears. However, the overall structure of the aforementioned existing wind turbines is complex, the sealing device is cumbersome, the assembly and installation method is complicated, and the number of parts used is large, which makes the wind turbines prone to failure.

[0005] Furthermore, the power generation devices of wind turbines are all located at the top of the tower, which holds the power generation devices high in the air. If the power generation devices malfunction, high-altitude maintenance is required, resulting in high maintenance costs and extreme inconvenience. Therefore, in the wind power industry, the efficient and stable operation of the power generation devices is a priority consideration in the design of wind turbines. However, the existing wind turbines mentioned above use complex components in their overall structure, making assembly and installation complicated, and the power generation stability is difficult to control, thus reducing their effectiveness. Utility Model Content

[0006] The main technical problem to be solved by this utility model is to provide a horizontal axis wind turbine generator with a simple overall structure, optimized overall structure of the wind turbine generator, elimination of unnecessary structures, convenient assembly and installation, and less prone to damage to the transmission parts, thereby improving stability during operation, avoiding malfunctions, and improving power generation efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A horizontal axis wind turbine includes a tower body, a mounting base rotatably mounted on the upper end of the tower body, and a wind turbine main shaft rotatably mounted on the middle of the mounting base. The two ends of the wind turbine main shaft extend to the two outer sides of the mounting base, respectively. A wind turbine is fixedly mounted on one end of the wind turbine main shaft, and a generator transmission box is fixedly mounted on the end of the mounting base away from the wind turbine. The other end of the wind turbine main shaft extends into the generator transmission box. Multiple generators are fixedly mounted on both the left and right sides of the generator transmission box. The drive end of the generator extends into the generator transmission box and is connected to the wind turbine main shaft through a gear transmission assembly.

[0009] The following are further optimizations of the above technical solution by this utility model:

[0010] The overall structure of the power generation transmission box includes a transmission box body, a mounting hole in the middle of the transmission box body, the inner surface diameter of the mounting hole matching the outer surface diameter of the mounting base, the transmission box body being fixedly fitted onto the outer surface of the mounting base through the mounting hole, an annular groove being formed inside the transmission box body, and a mounting plate for sealing the annular groove being fixedly installed on the side of the transmission box body away from the mounting base.

[0011] Further optimization: An annular protrusion is integrally connected to the side of the transmission box body near the mounting base, located outside the mounting hole. A connecting flange is integrally connected to the mounting base at the position corresponding to the annular protrusion. The annular protrusion and the connecting flange are fixedly connected by a first connecting bolt.

[0012] Further optimization: The mounting block plate is fixedly connected to the transmission box body by a second connecting bolt; a sealing ring is also provided at the connection between the mounting block plate and the transmission box body; the sealing ring is used to seal the connection between the mounting block plate and the transmission box body.

[0013] Further optimization: A through hole is provided in the middle of the mounting plate, and the end of the wind turbine main shaft away from the wind turbine extends into the through hole, and a rotating bearing is installed between the outer surface of the wind turbine main shaft and the inner surface of the through hole.

[0014] Further optimization: A sealing plate is fixedly installed on the side of the mounting plate away from the main body of the transmission box by a third connecting bolt. The sealing plate is used to seal the through hole.

[0015] Further optimization: The wind turbine main shaft is a single, smooth shaft. Support bearings are fixedly installed on the outer surface of the wind turbine main shaft near its two ends. The wind turbine main shaft is rotatably mounted on the mounting base through the support bearings.

[0016] Further optimization: The generators on the left and right sides of the power generation transmission box are fixedly installed on the corresponding transmission box body and mounting plate, respectively; the generators on the left and right sides of the power generation transmission box are staggered.

[0017] Further optimization: Bearing holes are respectively opened at the corresponding positions of each generator on the transmission box body and the mounting plate; the generator shaft of the generator extends into the generator transmission box through the corresponding bearing holes, and the bearing holes are equipped with mounting bearings for supporting the rotation of the generator shaft.

[0018] Further optimization: The gear transmission assembly includes a drive gear disposed inside the annular groove of the generator transmission box, the middle part of the drive gear being coaxial and fixedly mounted on the wind turbine main shaft; a transmission gear is fixedly mounted on the generator shaft, and the transmission gear is meshed with the drive gear respectively.

[0019] This utility model adopts the above-mentioned technical solution, which is ingenious in conception, reasonable in structure, and simple in overall structure. It optimizes the overall structure of the wind turbine, eliminates unnecessary structures, and is easy to assemble and install. The transmission parts are not easily damaged, thereby improving the stability during operation, avoiding malfunctions, and improving power generation efficiency.

[0020] This utility model is equipped with multiple generators, which are arranged on both sides of the generator transmission box. This ensures the number of generators while effectively guaranteeing the power output of each individual generator, thereby improving the overall power output and performance. The generator transmission box is filled with 1 / 3 lubricating oil, which lubricates the bearings and the meshing points of the drive gear and transmission gear, thus improving the performance.

[0021] In this invention, the transmission box body and the mounting plate are fixedly connected by bolts. The transmission box body is fitted onto the mounting base in a sleeve manner, and the transmission box body and the mounting base are fixedly connected by bolts. This facilitates the assembly of the transmission box body, and the overall structure is simple, greatly reducing the number of parts used in the wind turbine. It is also convenient to assemble and install, which can improve the stability of the wind turbine during normal operation after installation, avoid malfunctions, reduce the frequency of maintenance, and improve power generation efficiency.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the generator transmission box in an embodiment of this utility model.

[0025] In the diagram: 1-Tower body; 2-Mounting base; 201-Connecting flange; 3-Wind turbine main shaft; 301-Support bearing; 4-Wind rotor; 5-Generator transmission box; 501-Transmission box body; 502-Annular groove; 503-Mounting hole; 504-Annular protrusion; 505-Bearing hole; 506-Mounting blocking plate; 507-Blocking plate; 508-Rotating bearing; 6-Generator; 601-Generator shaft; 602-Transmission gear; 7-Drive gear. Detailed Implementation

[0026] like Figure 1-2 As shown: A horizontal axis wind turbine includes a tower body 1. A mounting base 2 is rotatably mounted on the upper end of the tower body 1, and a wind turbine main shaft 3 is rotatably mounted on the middle of the mounting base 2. The two ends of the wind turbine main shaft 3 extend to the two outer sides of the mounting base 2, respectively. A wind turbine 4 is fixedly mounted on one end of the wind turbine main shaft 3. A generator transmission box 5 is fixedly mounted on the end of the mounting base 2 away from the wind turbine 4. The other end of the wind turbine main shaft 3 extends into the generator transmission box 5. Multiple generators 6 are fixedly mounted on both the left and right sides of the generator transmission box 5. The drive end of the generator 6 extends into the generator transmission box 5 and is connected to the wind turbine main shaft 3 through a gear transmission assembly.

[0027] In this embodiment, the wind turbine main shaft 3 is a solid optical shaft. Support bearings 301 are fixedly installed on the outer surface of the wind turbine main shaft 3 near its two ends. The outer ring of the support bearing 301 is fixedly installed in the mounting base 2. The wind turbine main shaft 3 is rotatably mounted on the mounting base 2 through the support bearings 301.

[0028] The wind turbine main shaft 3 is integrally connected to a flange at one end near the wind turbine 4. The wind turbine 4 is fixedly installed on the wind turbine main shaft 3 by fastening bolts, and wind turbine blades are also installed on the wind turbine 4.

[0029] The wind turbine 4 rotates under the influence of natural wind, which drives the wind turbine main shaft 3 to rotate, thereby transmitting the rotational power on the wind turbine main shaft 3 to the power generation transmission box 5.

[0030] In this embodiment, the wind turbine main shaft 3 is a whole smooth shaft made of steel plate through rolling and butt welding, and a central hole is provided in the middle of the wind turbine main shaft 3 to reduce the overall weight of the wind turbine main shaft 3 while ensuring the overall structural strength of the wind turbine main shaft 3.

[0031] A support bearing seat is provided between the mounting base 2 and the upper end of the tower body 1, and the mounting base 2 is rotatably connected to the tower body 1 through the support bearing seat;

[0032] A drive device for driving the mounting base 2 to rotate is also provided between the mounting base 2 and the tower body 1. The drive device is existing technology and can be directly adopted. The drive device works to drive the mounting base 2 to rotate at the top of the tower body 1. At this time, the mounting base 2 drives the wind turbine 4 to rotate, so that the wind turbine 4 can be better aligned with the direction of the wind.

[0033] The overall structure of the power generation transmission box 5 includes a transmission box body 501. A mounting hole 503 is provided in the middle of the transmission box body 501. The inner surface diameter of the mounting hole 503 matches the outer surface diameter of the mounting base 2. The transmission box body 501 is fixedly fitted onto the outer surface of the mounting base 2 through the mounting hole 503. An annular groove 502 is provided inside the transmission box body 501. A mounting blocking plate 506 for sealing the annular groove 502 is fixedly installed on the side of the transmission box body 501 away from the mounting base 2.

[0034] In this embodiment, an annular protrusion 504 is integrally connected to the side of the transmission box body 501 near the mounting base 2, located outside the mounting hole 503. A connecting flange 201 is integrally connected to the mounting base 2 at a position corresponding to the annular protrusion 504.

[0035] The transmission box body 501 is sleeved on the outer surface of the mounting base 2 through the mounting hole 503. At this time, the annular protrusion 504 abuts against the connecting flange 201 to limit the position of the transmission box body 501.

[0036] The connecting flange 201 has multiple first bolt holes; the multiple first bolt holes are annular and spaced apart; the annular protrusion 504 has multiple first blind holes; the multiple first blind holes are annular and spaced apart.

[0037] The first bolt hole and the corresponding first blind hole are coaxially arranged, and the first connecting bolt is internally threaded to both of them. The first connecting bolt is threaded to the first bolt hole and the first blind hole to achieve a fixed connection between the annular protrusion 504 and the connecting flange 201, thereby fixing the transmission box body 501 on the mounting base 2 for easy assembly and installation.

[0038] The mounting plate 506 has multiple second bolt holes near its outer surface; the multiple second bolt holes are annular and spaced apart; the transmission box body 501 has multiple second blind holes on one side near the mounting plate 506, the second blind holes are annular and spaced apart.

[0039] The second bolt hole and the corresponding second blind hole are coaxially arranged, and the two are internally threaded with a second connecting bolt. Through the threaded connection between the second connecting bolt and the second bolt hole and the second blind hole, the mounting plate 506 is fixedly installed on the transmission box body 501, which facilitates assembly and installation.

[0040] In this embodiment, a sealing ring is provided at the connection between the mounting block 506 and the transmission box body 501, which is used to seal the connection between the mounting block 506 and the transmission box body 501.

[0041] The mounting plate 506 has a through hole in the middle. The end of the wind turbine main shaft 3 away from the wind turbine 4 extends into the through hole. A rotating bearing 508 is installed between the outer surface of the wind turbine main shaft 3 and the inner surface of the through hole. The rotating bearing 508 is used to support the wind turbine main shaft 3.

[0042] A sealing plate 507 is fixedly installed on the side of the mounting plate 506 away from the transmission box body 501 by a third connecting bolt. The sealing plate 507 is used to seal the through hole.

[0043] The generators 6 on the left and right sides of the power generation transmission box 5 are respectively fixedly installed on the corresponding transmission box body 501 and mounting plate 506 by the fourth connecting bolt.

[0044] The generators 6 on the left and right sides of the power generation transmission box 5 are arranged in an alternating manner. Bearing holes 505 are respectively opened on the transmission box body 501 and the mounting plate 506 at positions corresponding to each generator 6.

[0045] The generator shaft 601 of the generator 6 extends into the generator transmission box 5 through a corresponding bearing hole 505, and a mounting bearing for supporting the rotation of the generator shaft 601 is installed inside the bearing hole 505.

[0046] The gear transmission assembly includes a drive gear 7 disposed inside the annular groove 502 of the power generation transmission box 5. The middle part of the drive gear 7 is coaxial and is connected to the wind turbine main shaft 3. The rotation of the wind turbine main shaft 3 drives the drive gear 7 to rotate.

[0047] The generator shaft 601 is arranged on the outside of the drive gear 7, and a transmission gear 602 is fixedly installed on the generator shaft 601. The transmission gear 602 is meshed with the drive gear 7.

[0048] With this design, the rotation of the wind turbine main shaft 3 drives the drive gear 7 to rotate, and the rotation of the drive gear 7 meshes with the transmission gear 602 to drive the generator shaft 601 to rotate. The rotation of the generator shaft 601 is used to drive the generator 6 to perform power generation operations.

[0049] In this embodiment, increasing the transmission ratio between the drive gear 7 and the transmission gear 602 can increase the generator's speed, reduce its size and weight, and effectively lower its manufacturing cost. The transmission efficiency between the drive gear 7 and the transmission gear 602 is 97%-99%; this increased efficiency effectively reduces energy loss, reduces heat generation, and enables natural cooling.

[0050] Furthermore, in this utility model, multiple generators 6 can be set up, and the multiple generators 6 are arranged on both sides of the generator transmission box 5. This can ensure the power generation of a single generator while ensuring the number of generators, thereby improving the overall power generation and the performance.

[0051] In this embodiment, the drive gear 7 and the wind turbine main shaft 3 can be connected by a key and a keyway, or by a spline drive.

[0052] In addition to this embodiment, the drive gear 7 and the wind turbine main shaft 3 can also be fixedly connected by connecting bolts, and the rotation of the wind turbine main shaft 3 drives the drive gear 7 to rotate.

[0053] In this embodiment, the generator transmission box 5 is filled with 1 / 3 lubricating oil. The lubricating oil can lubricate the bearings and the meshing points of the drive gear 7 and the transmission gear 602, thereby improving the performance.

[0054] In this embodiment, multiple weight-reducing holes can be provided on the spokes of the drive gear 7. These weight-reducing holes are used to reduce the overall weight of the drive gear 7 while ensuring the overall structural strength of the drive gear 7, thereby improving its performance.

[0055] In this embodiment, the generator 6 is a generator 6 with a built-in braking mechanism. The braking mechanism is used to brake the generator shaft 601 of the generator 6. The rotation of the drive gear 7 can be braked by the synchronous operation of the braking mechanisms on multiple generators 6, thereby realizing the braking function.

[0056] In this embodiment, the generator 6 is a generator with a built-in first-stage planetary speed-increasing mechanism, which can further increase the speed on the basis of the original speed-increasing mechanism, so as to further reduce the size and weight of the motor, and at the same time further reduce the cost.

[0057] In use, the tower body 1 is fixedly installed on the pre-cast base, and the wind turbine 4 is aligned with the direction of the wind. At this time, the natural wind blows the wind turbine 4 to rotate, which drives the wind turbine main shaft 3 to rotate. The support bearing 301 and the rotating bearing 508 are used to support the rotation of the wind turbine main shaft 3. The rotation of the wind turbine main shaft 3 drives the drive gear 7 to rotate. The rotation of the drive gear 7 meshes with the transmission gear 602 to drive the generator shaft 601 to rotate. The rotation of the generator shaft 601 is used to drive the generator 6 to perform power generation.

[0058] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A horizontal axis wind turbine generator, comprising a tower (1), characterized in that: The upper end of the tower body (1) is rotatably mounted with a mounting base (2), and the middle part of the mounting base (2) is rotatably mounted with a wind turbine main shaft (3). The two ends of the wind turbine main shaft (3) extend to the two outer sides of the mounting base (2). A wind turbine (4) is fixedly mounted on one end of the wind turbine main shaft (3). A generator transmission box (5) is fixedly mounted on the end of the mounting base (2) away from the wind turbine (4). The other end of the wind turbine main shaft (3) extends into the generator transmission box (5). Multiple generators (6) are fixedly mounted on both the left and right sides of the generator transmission box (5). The drive end of the generator (6) extends into the generator transmission box (5) and is connected to the wind turbine main shaft (3) through a gear transmission assembly.

2. A horizontal axis wind turbine generator according to claim 1, characterized in that: The overall structure of the power generation transmission box (5) includes a transmission box body (501), a mounting hole (503) is provided in the middle of the transmission box body (501), the inner surface diameter of the mounting hole (503) matches the outer surface diameter of the mounting base (2), the transmission box body (501) is fixedly fitted on the outer surface of the mounting base (2) through the mounting hole (503), an annular groove (502) is provided inside the transmission box body (501), and a mounting plate (506) for sealing the annular groove (502) is fixedly installed on the side of the transmission box body (501) away from the mounting base (2).

3. A horizontal axis wind turbine generator according to claim 2, characterized in that: The transmission box body (501) has an annular protrusion (504) integrally connected on the side of the mounting base (2) near the mounting hole (503), and a connecting flange (201) integrally connected at the position corresponding to the annular protrusion (504) on the mounting base (2); the annular protrusion (504) and the connecting flange (201) are fixedly connected by a first connecting bolt.

4. A horizontal axis wind turbine generator according to claim 3, characterized in that: The mounting plate (506) is fixedly connected to the transmission box body (501) by a second connecting bolt; a sealing ring is also provided at the connection between the mounting plate (506) and the transmission box body (501); the sealing ring is used to seal the connection between the mounting plate (506) and the transmission box body (501).

5. A horizontal axis wind turbine generator according to claim 4, characterized in that: The mounting plate (506) has a through hole in the middle, and the end of the wind turbine main shaft (3) away from the wind turbine (4) extends into the through hole. A rotating bearing (508) is installed between the outer surface of the wind turbine main shaft (3) and the inner surface of the through hole.

6. A horizontal axis wind turbine generator according to claim 5, characterized in that: The mounting plate (506) is fixedly mounted with a sealing plate (507) on the side away from the transmission box body (501) by a third connecting bolt. The sealing plate (507) is used to seal the through hole.

7. A horizontal axis wind turbine generator according to claim 6, characterized in that: The wind turbine main shaft (3) is a whole optical shaft. Support bearings (301) are fixedly installed on the outer surface of the wind turbine main shaft (3) near its two ends. The wind turbine main shaft (3) is rotatably mounted on the mounting base (2) through the support bearings (301).

8. A horizontal axis wind turbine generator according to claim 7, characterized in that: The generators (6) on the left and right sides of the power generation transmission box (5) are fixedly installed on the corresponding transmission box body (501) and mounting plate (506); the generators (6) on the left and right sides of the power generation transmission box (5) are arranged in an alternating manner.

9. A horizontal axis wind turbine generator according to claim 8, characterized in that: Bearing holes (505) are respectively provided on the transmission box body (501) and the mounting plate (506) at positions corresponding to each generator (6); the generator shaft (601) of the generator (6) extends into the generator transmission box (5) through the corresponding bearing hole (505), and the bearing hole (505) is equipped with a mounting bearing for supporting the rotation of the generator shaft (601).

10. A horizontal axis wind turbine generator according to claim 9, characterized in that: The gear transmission assembly includes a drive gear (7) disposed inside the annular groove (502) of the generator transmission box (5), the middle part of the drive gear (7) is coaxial and fixedly mounted on the wind turbine main shaft (3); a transmission gear (602) is fixedly mounted on the generator shaft (601), and the transmission gear (602) meshes with the drive gear (7).

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