Low-noise transmission gear for wind power gear box

Abstract

The utility model relates to the technical field of gear noise reduction, and discloses a low-noise transmission gear for a wind power gear box, the low-noise transmission gear comprises a mounting pipe, and the outer circumferential surface of the mounting pipe is fixedly sleeved with a back plate. According to the low-noise transmission gear for the wind power gear box, the mounting pipe, the back plate, the first positioning rod and the first nut are arranged, and a first mounting hole and a second mounting hole are formed in the plastic gear and the metal gear correspondingly, so that the plastic gear and the metal gear are conveniently assembled and produced, the production process of the gear is simplified, and the gear is conveniently disassembled and maintained; by arranging the mounting groove, the mounting block, the metal gear teeth, a positioning plate, a second positioning rod and a second nut, the metal gear teeth are convenient to disassemble and maintain, the whole metal gear is prevented from being replaced when a single metal gear tooth is damaged, the maintenance cost is reduced, and the problems that an existing low-noise gear is inconvenient to assemble, produce, disassemble and maintain in batches, and the production efficiency is high are solved. And single metal gear teeth are inconvenient to maintain and replace.

Description

Technical Field

[0001] The present application relates to the technical field of gear noise reduction, and specifically to a low-noise transmission gear for a wind power gearbox. Background Art

[0002] The wind turbine gearbox is a key component of the wind turbine, used to transmit the power of the wind wheel to the generator. The gear is an important component in the wind turbine gearbox. The gear refers to a mechanical element with teeth on the rim that can continuously engage to transmit motion and power.

[0003] An existing patent (publication number: CN 214946202 U) discloses a low-noise gear, which relates to the field of gears and addresses the problem that steel gears, while having the advantage of high strength, generate considerable noise during transmission. The gear comprises a metal gear portion and a plastic gear portion, the plastic gear portion being fixedly connected to the metal gear portion. Both the plastic and metal gear portions have teeth, which correspond one-to-one with the teeth of the metal gear portion. This patent reduces noise during gear transmission while maintaining sufficient strength.

[0004] The above-mentioned low-noise gears need to be produced and processed using the injection molding process. The production and processing operations are relatively complicated and are not convenient for batch assembly production. When the plastic gears are damaged, it is inconvenient to disassemble and maintain them. Moreover, when the teeth of the metal gears are damaged, the entire metal gears can only be replaced, which increases the maintenance burden and increases the maintenance cost. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present application provides a low-noise transmission gear for a wind power gearbox, which has the advantages of being easy to assemble and produce gears in large quantities, and also easy to maintain and replace the teeth of the metal gears. It solves the problem that the existing low-noise gears need to be produced and processed using injection molding technology, the production and processing operations are relatively complicated, and it is not convenient to carry out batch assembly production. When the plastic gears are damaged, it is inconvenient to disassemble and maintain them. When the teeth of the metal gears are damaged, the entire metal gear can only be replaced, which increases the maintenance burden and increases the maintenance cost.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a low-noise transmission gear for a wind turbine gearbox, comprising a mounting tube, the outer circumferential surface of the mounting tube is fixedly sleeved with a back plate, the outer circumferential surface of the mounting tube is slidingly sleeved with a plastic gear, the outer circumferential surface of the plastic gear is fixedly connected with equidistantly arranged plastic gear teeth, the outer circumferential surface of the mounting tube is slidingly sleeved with a metal gear, the interior of the metal gear is provided with equidistantly arranged mounting grooves, the outer circumferential surface of the metal gear is provided with equidistantly arranged metal gear teeth, the bottom surface of each of the metal gear teeth is fixedly connected with a mounting block, the metal gear teeth are slidably plugged into the mounting groove through the mounting block, the front side of the back plate is fixedly connected with equidistantly arranged first positioning rods, and the outer circumferential surface of each of the first positioning rods is threadedly connected with a first nut.

[0007] Through the above scheme, since the existing low-noise gears need to be produced and processed using the injection molding process, the production and processing operations are relatively complicated and not convenient for batch assembly production. When the plastic gear is damaged, it is inconvenient to disassemble and maintain it. Moreover, when the teeth of the metal gear are damaged, the entire metal gear can only be replaced, which increases the maintenance burden and increases the maintenance cost. By providing a mounting tube, a back plate, a first positioning rod and a first nut, and opening a first mounting hole and a second mounting hole on the plastic gear and the metal gear respectively, it is convenient to assemble and produce the plastic gear and the metal gear, simplify the production process of the gear, and facilitate the disassembly and maintenance of the gear. By providing a mounting groove, a mounting block, metal gear teeth, a positioning plate, a second positioning rod and a second nut, it is convenient to disassemble and maintain the metal gear teeth, avoiding the need to replace the entire metal gear when a single metal gear tooth is damaged, thereby reducing maintenance costs.

[0008] Furthermore, the plastic gear has first mounting holes arranged at equal intervals, and the plastic gear is slidably connected to the outer circumferential surface of the first positioning rod through the first mounting holes. The metal gear has second mounting holes arranged at equal intervals, and the metal gear is slidably connected to the outer circumferential surface of the first positioning rod through the second mounting holes.

[0009] According to the above solution, the plastic gear and the metal gear are installed through the first installation hole and the second installation hole respectively, which simplifies the installation process of the gears and facilitates batch assembly production of the gears.

[0010] Furthermore, each of the mounting grooves is a T-shaped structure, and each of the mounting blocks is a T-shaped structure adapted to the mounting groove.

[0011] Through the above solution, the mounting block is restricted to prevent the mounting block from falling off easily, thereby increasing the stability of the metal gear teeth.

[0012] Furthermore, the front of the metal gear is fixedly connected to a second positioning rod arranged at equal intervals, and the front of the metal gear is provided with a positioning plate, and the interior of the positioning plate is provided with third mounting holes arranged at equal intervals. The positioning plates are respectively slidably connected to the outer circumferential surfaces of the second positioning rods through the third mounting holes, and the outer circumferential surface of each second positioning rod is threadedly connected to a second nut.

[0013] With the above solution, the mounting block is positioned by the positioning plate, and the positioning plate is fixed by the second positioning rod and the second nut, thereby facilitating the disassembly and maintenance of a single metal gear tooth.

[0014] Furthermore, the interior of the metal gear is provided with placement grooves arranged at equal intervals, and the metal gear is fixedly connected to the noise reduction block through the placement grooves.

[0015] Through the above solution, the noise reduction block is used to further reduce the noise of the metal gear, thereby optimizing the overall noise reduction effect of the gear.

[0016] Furthermore, the outer circumferential surface of the mounting tube is fixedly connected with equidistantly arranged limiting plates, the inner wall of the plastic gear is provided with a first limiting groove, and the plastic gear is slidably connected to the outer surface of the limiting plates through the first limiting groove.

[0017] Through the above solution, the plastic gear is reinforced by the limiting plate and the first limiting groove, so that the plastic gear always rotates along with the mounting tube, thereby increasing the stability of the plastic gear movement.

[0018] Furthermore, the outer circumferential surface of the metal gear is provided with second limiting grooves arranged at equal intervals, and the metal gear is slidingly connected to the outer surface of the limiting plate through the second limiting grooves.

[0019] Through the above solution, the metal gear is reinforced by the limiting plate and the second limiting groove, so that the metal gear always rotates along with the mounting tube, thereby increasing the stability of the metal gear movement.

[0020] Furthermore, the positions of the plastic gear teeth correspond to those of the metal gear teeth, and the outer contour of the plastic gear teeth is slightly larger than that of the metal gear teeth.

[0021] Through the above solution, the plastic gear teeth can mesh with the external gear before the metal gear teeth, thereby achieving the effect of vibration reduction and noise reduction.

[0022] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0023] The low-noise transmission gear for a wind power gear box is convenient for assembling and producing the plastic gear and the metal gear by providing a mounting tube, a back plate, a first positioning rod and a first nut, and respectively opening a first mounting hole and a second mounting hole on the plastic gear and the metal gear, thereby simplifying the production process of the gear and facilitating the disassembly and maintenance of the gear. The mounting groove, the mounting block, the metal gear teeth, the positioning plate, the second positioning rod and the second nut are provided to facilitate the disassembly and maintenance of the metal gear teeth, thereby avoiding the need to replace the entire metal gear when a single metal gear tooth is damaged, reducing maintenance costs, and solving the problem that existing low-noise gears are inconvenient for batch assembly and disassembly maintenance, and are inconvenient for maintenance and replacement of single metal gear teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the overall three-dimensional structure diagram of this application;

[0025] Figure 2 This is the backplane structure diagram of this application;

[0026] Figure 3 Installation pipe structure diagram for this application;

[0027] Figure 4 This is the plastic gear structure diagram for this application;

[0028] Figure 5 The metal gear structure diagram for this application;

[0029] Figure 6 This is the vertical assembly structure diagram for this application.

[0030] In the picture:

[0031] 1. Mounting tube; 2. Back plate; 3. Plastic gear; 4. Plastic gear teeth; 5. Metal gear; 6. Mounting slot; 7. Metal gear teeth; 8. Mounting block; 9. First positioning rod; 10. First mounting hole; 11. Second mounting hole; 12. First nut; 13. Second positioning rod; 14. Positioning plate; 15. Third mounting hole; 16. Second nut; 17. Placement slot; 18. Noise reduction block; 19. Limit plate; 20. First limiting slot; 21. Second limiting slot. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] See also Figure 1 、 Figure 3 and Figure 6 In this embodiment, a low-noise transmission gear for a wind turbine gearbox includes a mounting tube 1, the outer circumferential surface of the mounting tube 1 is fixedly sleeved with a back plate 2, the outer circumferential surface of the mounting tube 1 is slidably sleeved with a plastic gear 3, the outer circumferential surface of the plastic gear 3 is fixedly connected with equidistantly arranged plastic gear teeth 4, the outer circumferential surface of the mounting tube 1 is slidably sleeved with a metal gear 5, the interior of the metal gear 5 is provided with equidistantly arranged mounting grooves 6, the outer circumferential surface of the metal gear 5 is provided with equidistantly arranged metal gear teeth 7, the bottom surface of each metal gear tooth 7 is fixedly connected with a mounting block 8, the metal gear teeth 7 are slidably plugged into the mounting groove 6 through the mounting block 8, the front surface of the back plate 2 is fixedly connected with equidistantly arranged first positioning rods 9, and the outer circumferential surface of each first positioning rod 9 is threadedly connected with a first nut 12.

[0034] See also Figure 3 、 Figure 4 and Figure 5 The plastic gear 3 has first mounting holes 10 arranged at equal intervals, and the plastic gear 3 is slidably connected to the outer circumferential surface of the first positioning rod 9 through the first mounting holes 10. The metal gear 5 has second mounting holes 11 arranged at equal intervals, and the metal gear 5 is slidably connected to the outer circumferential surface of the first positioning rod 9 through the second mounting holes 11. The plastic gear 3 and the metal gear 5 are respectively installed through the first mounting holes 10 and the second mounting holes 11, which simplifies the installation process of the gears and facilitates batch assembly production of the gears.

[0035] See also Figure 6 Each mounting groove 6 is a T-shaped structure, and each mounting block 8 is a T-shaped structure adapted to the mounting groove 6, which restricts the mounting block 8 to prevent the mounting block 8 from falling off easily and increases the stability of the metal gear teeth 7.

[0036] See also Figure 1 、 Figure 5 and Figure 6 The front of the metal gear 5 is fixedly connected to a second positioning rod 13 arranged at equal intervals. A positioning plate 14 is provided on the front of the metal gear 5. The interior of the positioning plate 14 is provided with third mounting holes 15 arranged at equal intervals. The positioning plates 14 are slidably connected to the outer circumferential surface of the second positioning rod 13 through the third mounting holes 15. The outer circumferential surface of each second positioning rod 13 is threadedly connected with a second nut 16. The mounting block 8 is positioned by the positioning plate 14, and the positioning plate 14 is fixed by the second positioning rod 13 and the second nut 16, so as to facilitate the disassembly and maintenance of a single metal gear tooth 7.

[0037] See also Figure 1 、 Figure 5 and Figure 6The interior of the metal gear 5 is provided with equally spaced placement grooves 17, and the metal gear 5 is fixedly connected to a noise reduction block 18 through the placement groove 17. The noise reduction block 18 further reduces the noise of the metal gear 5, thereby optimizing the overall noise reduction effect of the gear.

[0038] See also Figure 1 、 Figure 3 and Figure 4 The outer circumferential surface of the mounting tube 1 is fixedly connected with equidistantly arranged limiting plates 19, and the inner wall of the plastic gear 3 is provided with a first limiting groove 20. The plastic gear 3 is slidingly connected to the outer surface of the limiting plate 19 through the first limiting groove 20. The plastic gear 3 is reinforced by the limiting plate 19 and the first limiting groove 20, so that the plastic gear 3 always rotates with the mounting tube 1, thereby increasing the stability of the movement of the plastic gear 3.

[0039] See also Figure 1 、 Figure 3 and Figure 5 The outer circumferential surface of the metal gear 5 is provided with second limiting grooves 21 arranged at equal intervals. The metal gear 5 is slidingly connected to the outer surface of the limiting plate 19 through the second limiting grooves 21. The metal gear 5 is reinforced by the limiting plate 19 and the second limiting grooves 21, so that the metal gear 5 always rotates with the mounting tube 1, thereby increasing the stability of the movement of the metal gear 5.

[0040] See also Figure 1 and Figure 2 The positions of the plastic gear teeth 4 and the metal gear teeth 7 correspond to each other, and the outer contour of the plastic gear teeth 4 is slightly larger than the outer contour of the metal gear teeth 7, so that the plastic gear teeth 4 can mesh with the external gear before the metal gear teeth 7, thereby achieving the effect of shock absorption and noise reduction.

[0041] In this embodiment, a low-noise transmission gear for a wind turbine gearbox is provided. By providing a mounting tube 1, a back plate 2, a first positioning rod 9 and a first nut 12, and respectively opening a first mounting hole 10 and a second mounting hole 11 on the plastic gear 3 and the metal gear 5, it is convenient to assemble and produce the plastic gear 3 and the metal gear 5, simplifying the production process of the gear and facilitating the disassembly and maintenance of the gear. By providing a mounting groove 6, a mounting block 8, metal gear teeth 7, a positioning plate 14, a second positioning rod 13 and a second nut 16, it is convenient to disassemble and maintain the metal gear teeth 7, avoiding the need to replace the entire metal gear 5 when a single metal gear tooth 7 is damaged, reducing maintenance costs, and solving the problem that existing low-noise gears are inconvenient for batch assembly and disassembly maintenance, and inconvenient for maintenance and replacement of single metal gear teeth 7.

[0042] It should be noted that the noise reduction block 18 is made of glass fiber cotton, which has the characteristics of fire resistance and noise reduction, and can reduce the transmission of noise from the metal gear 5.

[0043] The working principle of the above embodiment is:

[0044] When the gear transmission moves, the plastic gear teeth 4 can mesh with the external gear before the metal gear teeth 7, thereby achieving the effect of shock absorption and noise reduction. The noise reduction block 18 can reduce the transmission of the noise of the metal gear 5, further optimizing the overall noise reduction effect of the gear. When the gear needs to be assembled and produced, the plastic gear 3 and the metal gear 5 are respectively installed on the mounting tube 1 and the first positioning rod 9 through the first mounting hole 10 and the second mounting hole 11, and then the first nut 12 is installed on the first positioning rod 9, and the first nut 12 is tightened to complete the installation of the gear. When the damaged metal gear teeth 7 need to be disassembled and maintained, the second nut 16 and the positioning plate 14 can be removed from the second positioning rod 13 to release the positioning restrictions on the mounting block 8 and the metal gear teeth 7. Then, the damaged single metal gear tooth 7 is taken out from the inside of the mounting groove 6 through the mounting block 8 for replacement. After the replacement is completed, the positioning plate 14 and the second nut 16 can be used to re-position the mounting block 8.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0046] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low-noise transmission gear for a wind turbine gearbox, comprising a mounting tube (1), characterized in that: The outer circumference of the mounting tube (1) is fixedly sleeved with a back plate (2), the outer circumference of the mounting tube (1) is slidably sleeved with a plastic gear (3), the outer circumference of the plastic gear (3) is fixedly connected with equidistantly arranged plastic gear teeth (4), the outer circumference of the mounting tube (1) is slidably sleeved with a metal gear (5), the interior of the metal gear (5) is provided with equidistantly arranged mounting grooves (6), the outer circumference of the metal gear (5) is provided with equidistantly arranged metal gear teeth (7), the bottom surface of each metal gear tooth (7) is fixedly connected with a mounting block (8), the metal gear teeth (7) are slidably plugged into the mounting groove (6) through the mounting block (8), the front surface of the back plate (2) is fixedly connected with equidistantly arranged first positioning rods (9), and the outer circumference of each first positioning rod (9) is threadedly connected with a first nut (12).

2. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: The plastic gear (3) is provided with first mounting holes (10) arranged at equal intervals, and the plastic gear (3) is respectively slidably sleeved with the outer circumferential surface of the first positioning rod (9) through the first mounting holes (10). The metal gear (5) is provided with second mounting holes (11) arranged at equal intervals, and the metal gear (5) is respectively slidably sleeved with the outer circumferential surface of the first positioning rod (9) through the second mounting holes (11).

3. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: Each of the mounting grooves (6) is a T-shaped structure, and each of the mounting blocks (8) is a T-shaped structure adapted to the mounting groove (6).

4. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: The front face of the metal gear (5) is fixedly connected to second positioning rods (13) arranged at equal intervals. The front face of the metal gear (5) is provided with a positioning plate (14). The interior of the positioning plate (14) is provided with third mounting holes (15) arranged at equal intervals. The positioning plates (14) are respectively slidably connected to the outer circumferential surfaces of the second positioning rods (13) through the third mounting holes (15). The outer circumferential surface of each second positioning rod (13) is threadedly connected to a second nut (16).

5. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: The metal gear (5) is provided with placement grooves (17) arranged at equal intervals inside, and the metal gear (5) is fixedly connected to a noise reduction block (18) via the placement grooves (17).

6. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: The outer circumferential surface of the mounting tube (1) is fixedly connected to equidistantly arranged limiting plates (19), the inner wall of the plastic gear (3) is provided with a first limiting groove (20), and the plastic gear (3) is slidably connected to the outer surface of the limiting plates (19) through the first limiting groove (20).

7. The low-noise transmission gear for a wind turbine gearbox according to claim 6, characterized in that: The outer circumferential surface of the metal gear (5) is provided with second limiting grooves (21) arranged at equal intervals, and the metal gear (5) is slidably connected to the outer surface of the limiting plate (19) through the second limiting grooves (21).

8. The low-noise transmission gear for a wind turbine gearbox according to claim 1, characterized in that: The positions of the plastic gear teeth (4) and the metal gear teeth (7) respectively correspond to each other, and the outer contour of the plastic gear teeth (4) is slightly larger than the outer contour of the metal gear teeth (7).

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