Horizontal-axis wind driven generator

Abstract

The invention 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 overall structure of the wind driven generator is simple, the overall structure of the wind driven generator is optimized, assembly and installation are convenient, a transmission part is not prone to being damaged, then the stability during working is improved, the fault problem is avoided, and the power generation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of generators, and more specifically, relates to a horizontal-axis wind turbine. Background Art

[0002] Currently, there are mainly three types of horizontal-axis wind turbines: the first is a direct-drive horizontal-axis wind turbine; the second is a high-speed horizontal-axis wind turbine with a multi-stage parallel-axis gear speed-increasing mechanism; the third is a semi-direct-drive horizontal-axis wind turbine with a planetary speed-changing mechanism. All of the above three types of wind turbines have a large overall volume and weight, a complex overall structure, high production difficulty, and high manufacturing costs.

[0003] There is also a wind turbine in the prior art. The Chinese invention patent with the patent application number: CN202310830756.8 discloses an extra-large power horizontal-axis wind turbine and its usage method. An extra-large power horizontal-axis wind turbine includes a tower body. A base is provided on the tower body. A wind power main shaft is rotatably installed on the base. One end of the wind power main shaft extends to the outside of the base and is fixedly connected to a wind turbine. At least one set of power generation devices is installed on the base. The end of the wind power main shaft away from the wind turbine is in transmission connection with the power generation device. The rotation of the wind power main shaft drives the power generation device to perform power generation operations.

[0004] The above-mentioned existing wind turbines are provided with a plurality of generators arranged in a ring and spaced apart, and the plurality of generators are connected in parallel to perform power generation operations. The wind turbine drives the wind power main shaft to rotate under the blowing of natural wind. The wind power main shaft drives a gear and a gear ring to rotate. The gear ring drives a plurality of generators to perform power generation operations through a plurality of shaft gears engaged therewith. However, the above-mentioned existing wind turbines have a complex overall structure, a cumbersome sealing device, a cumbersome assembly and installation method, and a large number of parts used, resulting in the wind turbine being prone to failures.

[0005] Moreover, the power generation devices of the wind turbine are all arranged at the upper end of the tower body. The tower body holds the power generation devices high in the air. Once a failure occurs in the power generation device, high-altitude maintenance operations are required, resulting in high maintenance costs and extremely inconvenient maintenance. Therefore, in the wind power generation industry, the ability of the power generation device to operate efficiently and stably is a problem that is given priority consideration in the design of wind turbines. The components used in the overall structure of the above-mentioned existing wind turbines are complex, the assembly and installation are complex, and the power generation stability is not easy to control, reducing the use effect. Summary of the Invention

[0006] The main technical problem to be solved by the present invention is to provide a horizontal axis wind turbine with a simple overall structure, optimize the overall structure of the wind turbine, remove unnecessary structures, and facilitate assembly and installation. The transmission part is not easily damaged, thereby improving stability during operation, avoiding malfunctions, and improving power generation efficiency.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A horizontal axis wind turbine comprises a tower body, wherein a mounting seat is rotatably mounted on the upper end of the tower body, and a wind turbine main shaft is rotatably mounted on the middle part of the mounting seat; two ends of the wind turbine main shaft respectively extend to the two outer sides of the mounting seat, a wind wheel is fixedly mounted on one end of the wind turbine main shaft, a generator transmission box is fixedly mounted on the end of the mounting seat away from the wind wheel, the other end of the wind turbine main shaft extends into the generator transmission box, a plurality of generators are fixedly mounted on the left and right side surfaces of the generator transmission box, and the driving end of the generator extends into the generator transmission box and is connected to the wind turbine main shaft through a gear transmission assembly.

[0008] The following is a further optimization of the above technical solution by the present invention: The overall structure of the power generation transmission box includes a transmission box body, a mounting hole is opened in the middle of the transmission box body, the inner surface diameter of the mounting hole matches the outer surface diameter of the mounting seat, the transmission box body is fixedly sleeved on the outer surface of the mounting seat through the mounting hole, an annular groove is opened inside the transmission box body, and a mounting plugging plate for sealing the annular groove is fixedly installed on the side of the transmission box body away from the mounting seat.

[0009] Further optimization: an annular protrusion is integrally connected to the outer side of the mounting hole on one side surface of the transmission box body close to the mounting seat, and a connecting flange is integrally connected to the mounting seat at a position corresponding to the annular protrusion; the annular protrusion and the connecting flange are fixedly connected by a first connecting bolt.

[0010] Further optimization: the installation plugging plate and the transmission box body are fixedly connected by a second connecting bolt; a sealing ring is also provided at the connection between the installation plugging plate and the transmission box body; the sealing ring is used to seal the connection between the installation plugging plate and the transmission box body.

[0011] Further optimization: a through hole is opened in the middle of the installation plugging plate, an end of the wind turbine main shaft away from the wind wheel 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.

[0012] Further optimization: A blocking plate is fixedly installed on the side of the mounting blocking plate away from the transmission box body through a third connecting bolt, and the blocking plate is used to block the through hole.

[0013] Further optimization: The wind power main shaft is a solid smooth shaft. Support bearings are respectively and fixedly installed on the outer surface of the wind power main shaft near both ends thereof. The wind power main shaft is rotationally installed on the mounting seat through the support bearings.

[0014] Further optimization: The generators on the left and right sides of the power generation transmission box are respectively and fixedly installed on the corresponding transmission box main body and mounting plug plate; the generators on the left and right sides of the power generation transmission box are arranged staggeredly.

[0015] Further optimization: Bearing holes are respectively formed at positions on the transmission box main body and the mounting plug plate corresponding to each generator; the generator shaft of the generator extends into the power generation transmission box through the corresponding bearing hole, and a mounting bearing for supporting the rotation of the generator shaft is installed inside the bearing hole.

[0016] Further optimization: The gear transmission assembly includes a driving gear arranged inside the annular groove of the power generation transmission box. The middle part of the driving gear is coaxially and fixedly installed on the wind power main shaft; a transmission gear is fixedly installed on the generator shaft, and the transmission gears are respectively meshed and connected with the driving gear.

[0017] The present invention adopts the above technical solutions, with ingenious conception, reasonable structure, simple overall structure, optimizing the overall structure of the wind turbine, removing unnecessary structures, and being convenient for assembly and installation. The transmission part is not easily damaged, thereby improving the stability during operation, avoiding fault problems, and improving the power generation efficiency.

[0018] In the present invention, multiple generators are provided, and the multiple generators are arranged on both sides of the power generation transmission box, which can effectively ensure the power generation of a single generator while ensuring the number of generators, thereby improving the overall power generation power and the use effect; 1 / 3 of lubricating oil is injected into the power generation transmission box, and the lubricating oil can lubricate each bearing and the meshing part of the driving gear and the transmission gear, improving the use effect.

[0019] In the present invention, the transmission box main body and the mounting plug plate are fixedly connected by bolts. The transmission box main body is sleeved on the mounting seat in a sleeving manner, and the transmission box main body and the mounting seat are fixedly connected by bolt connection, which is convenient for assembling the transmission box main body, and the overall structure is simple, greatly reducing the number of parts used in the wind turbine, and being convenient for assembly and installation. It can improve the stability of the wind turbine during normal operation after installation, avoid fault problems, reduce the maintenance frequency, and improve the power generation efficiency.

[0020] The present invention will be further described below with reference to the drawings and embodiments. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of the power generation transmission box in the embodiment of the present invention.

[0022] In the figure: 1 - tower body; 2 - mounting seat; 201 - connecting flange; 3 - wind power main shaft; 301 - support bearing; 4 - wind turbine; 5 - power generation transmission box; 501 - transmission box main body; 502 - annular groove; 503 - mounting hole; 504 - annular protrusion; 505 - bearing hole; 506 - mounting plug plate; 507 - sealing plate; 508 - rotating bearing; 6 - generator; 601 - generator shaft; 602 - transmission gear; 7 - driving gear. Specific embodiments

[0023] As Figure 1-2 shown: A horizontal axis wind turbine includes a tower body 1, a mounting seat 2 is rotatably installed at the upper end of the tower body 1, and a wind power main shaft 3 is rotatably installed in the middle of the mounting seat 2; both ends of the wind power main shaft 3 extend to the two outer sides of the mounting seat 2, one end of the wind power main shaft 3 is fixedly installed with a wind turbine 4, a power generation transmission box 5 is fixedly installed at one end of the mounting seat 2 away from the wind turbine 4, the other end of the wind power main shaft 3 extends into the power generation transmission box 5, and a plurality of generators 6 are fixedly installed on both the left and right side surfaces of the power generation transmission box 5, and the driving end of the generator 6 extends into the power generation transmission box 5 and is in transmission connection with the wind power main shaft 3 through a gear transmission assembly.

[0024] In this embodiment, the wind power main shaft 3 is a solid smooth shaft, and support bearings 301 are respectively fixedly installed on the outer surface of the wind power main shaft 3 near both ends thereof, the outer rings of the support bearings 301 are fixedly installed in the mounting seat 2, and the wind power main shaft 3 is rotatably installed on the mounting seat 2 through the support bearings 301.

[0025] One end of the wind power main shaft 3 close to the wind turbine 4 is integrally connected with a flange plate, the wind turbine 4 is fixedly installed on the wind power main shaft 3 through fastening bolts, and wind power blades are also installed on the wind turbine 4.

[0026] The wind turbine 4 rotates under the blowing of natural wind. At this time, the wind turbine 4 drives the wind power main shaft 3 to rotate, thereby realizing the transmission of the rotational power on the wind power main shaft 3 into the power generation transmission box 5.

[0027] In this embodiment, the wind power main shaft 3 is a solid smooth shaft made of a steel plate after curling and butt welding, and a central hole is provided in the middle of the wind power main shaft 3 to reduce the overall weight of the wind power main shaft 3 while ensuring the overall structural strength of the wind power main shaft 3.

[0028] A support bearing seat is provided between the mounting seat 2 and the upper end of the tower body 1, and the mounting seat 2 is rotatably connected to the tower body 1 through the support bearing seat; A driving device for driving the mounting base 2 to rotate is also provided between the mounting base 2 and the tower body 1. The driving device is a prior art and an existing driving device can be directly adopted. The driving 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 wheel 4 to rotate, so that the wind wheel 4 can better align with the wind direction.

[0029] The overall structure of the power generation transmission box 5 includes a transmission box main body 501. An installation hole 503 is opened in the middle of the transmission box main body 501. The inner surface diameter of the installation hole 503 matches the outer surface diameter of the mounting base 2. The transmission box main body 501 is fixedly sleeved on the outer surface of the mounting base 2 through the installation hole 503. An annular groove 502 is opened inside the transmission box main body 501. An installation plug plate 506 for blocking the annular groove 502 is fixedly installed on one side of the transmission box main body 501 away from the mounting base 2.

[0030] In this embodiment, an annular protrusion 504 is integrally connected to the outer side of the installation hole 503 on one side of the transmission box main body 501 close to the mounting base 2. A connecting flange 201 is integrally connected to the position on the mounting base 2 corresponding to the annular protrusion 504.

[0031] The transmission box main body 501 is sleeved on the outer surface of the mounting base 2 through the installation hole 503. At this time, the annular protrusion 504 abuts against the connecting flange 201 to limit the position of the transmission box main body 501.

[0032] A plurality of first bolt through-holes are opened on the connecting flange 201; the plurality of first bolt through-holes are annular and arranged at intervals; a plurality of first blind holes are opened on the annular protrusion 504, and the plurality of first blind holes are annular and arranged at intervals.

[0033] The first bolt through-hole and the corresponding first blind hole are coaxially arranged, and a first connecting bolt is threadedly connected inside the two of them. Through the threaded connection of the first connecting bolt with the first bolt through-hole and the first blind hole, the fixed connection between the annular protrusion 504 and the connecting flange 201 is realized, and further the transmission box main body 501 is fixedly installed on the mounting base 2, which is convenient for assembly and installation.

[0034] A plurality of second bolt through-holes are opened at a position close to the outer circular surface of the installation plug plate 506; the plurality of second bolt through-holes are annular and arranged at intervals; a plurality of second blind holes are opened on one side of the transmission box main body 501 close to the installation plug plate 506, and the second blind holes are annular and arranged at intervals.

[0035] The second bolt through-hole and the corresponding second blind hole are coaxially arranged, and a second connecting bolt is threadedly connected inside the two of them. By the threaded connection of the second connecting bolt with the second bolt through-hole and the second blind hole, the installation plug plate 506 is fixedly installed on the transmission box main body 501, which is convenient for assembly and installation.

[0036] In the embodiment, a sealing ring is further arranged at the connection between the installation plug plate 506 and the transmission box main body 501, and the sealing ring is used to seal the connection between the installation plug plate 506 and the transmission box main body 501.

[0037] A through-hole is opened in the middle of the installation plug plate 506. One end of the wind power main shaft 3 away from the wind wheel 4 extends into the through-hole, and a rotating bearing 508 is installed between the outer surface of the wind power main shaft 3 and the inner surface of the through-hole. The rotating bearing 508 is used to support the wind power main shaft 3.

[0038] A sealing plate 507 is fixedly installed on the side of the installation plug plate 506 away from the transmission box main body 501 through a third connecting bolt, and the sealing plate 507 is used to seal the through-hole.

[0039] 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 main body 501 and installation plug plate 506 through fourth connecting bolts.

[0040] The generators 6 on the left and right sides of the power generation transmission box 5 are arranged staggeredly, and bearing holes 505 are respectively opened at the positions of the transmission box main body 501 and the installation plug plate 506 corresponding to each generator 6.

[0041] The generator shaft 601 of the generator 6 extends into the power generation transmission box 5 through the corresponding bearing hole 505, and an installation bearing for supporting the rotation of the generator shaft 601 is installed inside the bearing hole 505.

[0042] The gear transmission assembly includes a driving gear 7 arranged inside the annular groove 502 of the power generation transmission box 5. The middle of the driving gear 7 is coaxially and drivingly connected to the wind power main shaft 3, and the rotation of the wind power main shaft 3 drives the driving gear 7 to rotate.

[0043] The generator shaft 601 is arranged outside the driving gear 7, and a transmission gear 602 is fixedly installed on the generator shaft 601. The transmission gears 602 are respectively meshed and connected with the driving gear 7.

[0044] With such a design, the rotation of the wind power main shaft 3 drives the driving gear 7 to rotate. The rotation of the driving gear 7 meshes with the transmission gear 602 to drive the generator shaft 601 to rotate, and the rotation of the generator shaft 601 is used to drive the generator 6 to perform power generation operations.

[0045] In this embodiment, when the transmission ratio of the driving gear 7 to the transmission gear 602 is increased, the rotational speed of the generator can be increased, the volume and weight of the generator can be reduced, and its manufacturing cost can be effectively reduced. The transmission efficiency between the driving gear 7 and the transmission gear 602 is 97%-99%; after the transmission efficiency is increased, the energy loss can be effectively reduced, the generation of heat can be reduced, and natural cooling can be achieved.

[0046] Moreover, in the present invention, multiple generators 6 can be provided, and the multiple generators 6 are arranged on both sides of the power generation transmission box 5, which can effectively ensure the power generation of a single generator while ensuring the number of generators, thereby improving the overall power generation power and the use effect.

[0047] In this embodiment, the driving gear 7 and the wind power main shaft 3 can be in transmission connection through the cooperation of a connection key and a keyway, or can be in transmission connection by means of spline transmission.

[0048] Outside this embodiment, the driving gear 7 and the wind power main shaft 3 can also be fixedly connected by connection bolts, and the rotation of the wind power main shaft 3 drives the driving gear 7 to rotate.

[0049] In this embodiment, 1 / 3 of lubricating oil is injected into the power generation transmission box 5, and the lubricating oil can lubricate each bearing and the meshing part of the driving gear 7 and the transmission gear 602, improving the use effect.

[0050] In this embodiment, a plurality of weight-reducing holes can be provided on the spoke of the driving gear 7, and the weight-reducing holes are used to reduce the overall weight while ensuring the overall structural strength of the driving gear 7, improving the use effect.

[0051] 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, and the rotation of the driving gear 7 can be braked by the synchronous operation of the braking mechanisms on the plurality of generators 6 to achieve the braking function.

[0052] 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 increase, so as to further reduce the volume and weight of the motor and also further reduce the cost.

[0053] In use, the tower body 1 is fixedly installed on a pre-cast base, and the wind turbine 4 is aligned with the incoming wind direction. At this time, the natural wind blows the wind turbine 4 to rotate, driving the wind power main shaft 3 to rotate, and the support bearing 301 and the rotating bearing 508 are used to support the rotation of the wind power main shaft 3; the rotation of the wind power main shaft 3 drives the driving gear 7 to rotate, and the driving gear 7 rotates to mesh with the transmission gear 602 to drive the generator shaft 601 to rotate, and the rotation of the generator shaft 601 is used to drive the generator 6 to perform power generation operations.

[0054] For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present invention.

Claims

1. A horizontal axis wind turbine, comprising a tower body (1), characterized in that: A mounting seat (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 part of the mounting seat (2); two ends of the wind turbine main shaft (3) extend to two outer sides of the mounting seat (2) respectively; a wind wheel (4) is fixedly mounted on one end of the wind turbine main shaft (3); a power generation transmission box (5) is fixedly mounted on the end of the mounting seat (2) away from the wind wheel (4); the other end of the wind turbine main shaft (3) extends into the power generation transmission box (5); a plurality of generators (6) are fixedly mounted on both left and right side surfaces of the power generation transmission box (5); a driving end of the generator (6) extends into the power generation transmission box (5) and is transmission-connected to the wind turbine main shaft (3) through a gear transmission assembly.

2. A horizontal axis wind turbine according to claim 1, characterized in that: The overall structure of the power generation transmission box (5) comprises 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 seat (2), the transmission box body (501) is fixedly sleeved on the outer surface of the mounting seat (2) through the mounting hole (503), an annular groove (502) is provided inside the transmission box body (501), and a mounting plugging plate (506) for blocking the annular groove (502) is fixedly installed on a side of the transmission box body (501) away from the mounting seat (2).

3. A horizontal axis wind turbine according to claim 2, characterized in that: An annular protrusion (504) is integrally connected to the outer side of the mounting hole (503) on one side surface of the transmission box body (501) close to the mounting seat (2), and a connecting flange (201) is integrally connected to a position on the mounting seat (2) corresponding to the annular protrusion (504); the annular protrusion (504) and the connecting flange (201) are fixedly connected by a first connecting bolt.

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

5. A horizontal axis wind turbine according to claim 4, characterized in that: A through hole is provided in the middle of the mounting plug (506), one end of the wind turbine main shaft (3) away from the wind wheel (4) extends into the through hole, and 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 according to claim 5, characterized in that: A blocking plate (507) is fixedly mounted on a side of the mounting blocking plate (506) away from the transmission box body (501) via a third connecting bolt, and the blocking plate (507) is used to block the through hole.

7. A horizontal axis wind turbine according to claim 6, characterized in that: The wind turbine main shaft (3) is a straight shaft, and support bearings (301) are fixedly mounted on the outer surface of the wind turbine main shaft (3) near both ends thereof. The wind turbine main shaft (3) is rotatably mounted on the mounting seat (2) via the support bearings (301).

8. A horizontal axis wind turbine according to claim 7, characterized in that: The generators (6) on the left and right sides of the power transmission box (5) are respectively fixedly mounted on the corresponding transmission box body (501) and the mounting block (506); the generators (6) on the left and right sides of the power transmission box (5) are arranged in a staggered manner.

9. A horizontal axis wind turbine according to claim 8, characterized in that: Bearing holes (505) are respectively provided at positions corresponding to the respective generators (6) on the transmission box body (501) and the mounting plug plate (506); the generator shaft (601) of the generator (6) extends into the power generation transmission box (5) through the corresponding bearing holes (505), and mounting bearings for supporting the generator shaft (601) to rotate are installed inside the bearing holes (505).

10. A horizontal axis wind turbine according to claim 9, characterized in that: The gear transmission assembly comprises a driving gear (7) arranged inside an annular groove (502) of a power generation transmission box (5), the middle portion of the driving gear (7) being coaxially and fixedly mounted on the wind power main shaft (3); a transmission gear (602) being fixedly mounted on the generator shaft (601), the transmission gears (602) being respectively meshed and connected with the driving gears (7).

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