An integrated wind power gearbox

Abstract

The present invention relates to the technical field of wind turbine gearboxes, specifically an integrated wind turbine gearbox, comprising a wind turbine gearbox body, wherein an inner shaft ring is rotatably connected to the inside of the wind turbine gearbox body, a front cover plate is fixedly installed at the front end of the wind turbine gearbox body, and a rotating shaft is rotatably connected to the inner surface of the inner shaft ring and the central inner surface of the front cover plate. A central oil hole is provided on the central inner wall of the rotating shaft to ensure that the lubricating oil is distributed in the inner cavity under high-speed rotation and centrifugal action, and the transmission lubrication mechanism is provided to transmit the lubricating oil to the teeth of the sun gear. When the planetary gear and the outer surface of the sun gear are matched and meshed, the distribution of the lubricating oil between the teeth is realized to avoid rotation wear between the gears. The optimized design of the bearing lubrication mechanism between the planetary gear and the planetary shaft can be used to receive excess oil, so that the lubricating oil penetrates into the inner bearing ring and the outer bearing ring, thereby ensuring uniform lubrication and extending the service life of the bearing lubrication mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power gear boxes, and in particular to an integrated wind power gear box. Background Art

[0002] With the global emphasis on renewable energy and the improvement of environmental awareness, wind power generation, as a clean and renewable energy form, has developed rapidly. Wind power gearbox is a key component in wind turbine generator set. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it reach the speed required for the generator to generate electricity. Since the speed of the wind wheel is usually very low and cannot meet the requirements of the generator to generate electricity, it is necessary to achieve it through the speed increase effect of the gearbox. The integrated wind power gearbox integrates multiple components through optimized design, reducing the number of parts and the overall size, making the structure more compact.

[0003] In the prior art, there is an integrated wind power gearbox with publication number CN117072650A, which includes a main bearing component and a planetary transmission structure, one end of the main bearing component is connected to the wind wheel, and the other end of the main bearing component is integrally connected to the planetary transmission structure. The power input by the wind wheel can be transmitted to the planetary transmission structure through the main bearing component, and the accelerated power is output after being accelerated by the planetary transmission structure. The planetary transmission structure includes a planetary carrier, a planetary gear bearing is installed on the planetary carrier, a planetary gear shaft is installed in the planetary gear bearing, a planetary gear is installed on the planetary gear shaft, and the planetary gear is respectively engaged with the inner gear ring and the sun gear through teeth, and the main bearing component is respectively connected to the planetary carrier and the inner gear ring. The beneficial effects of the present invention include: the main bearing component is integrally connected to the planetary transmission structure, the integration is high, and the bearing supporting the planetary carrier on the planetary transmission structure can be eliminated, thereby reducing the cost of the whole wind turbine set.

[0004] In order to solve the problem that the existing transmission system is supported by two bearings, has a large structure size and high cost, the existing technology adopts a method of integral transmission connection between the main bearing component and the planetary transmission structure.

[0005] However, in actual use, the planetary gears inside the gearbox mesh with each other to achieve a high transmission ratio output. During this process, the gears rotate rapidly, causing friction. In addition, the spline connection with the gear generates heat due to the friction force, and the teeth wear and deform, which affects the tooth meshing and reduces the load-bearing capacity and service life of the gearbox.

[0006] Therefore, the present invention proposes an integrated wind turbine gearbox, which solves the problem of easy wear and deformation between the existing planetary gear transmission structure and the rotating shaft and between the gears, and can accurately lubricate the planetary gear teeth to avoid tooth wear and deformation and bearing damage. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide an integrated wind power gearbox, which has the advantages of being able to accurately lubricate the planetary gear teeth and avoid tooth wear and deformation and bearing damage.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated wind turbine gearbox, comprising a wind turbine gearbox body, wherein an inner shaft ring is rotatably connected to the inside of the wind turbine gearbox body, a front cover plate is fixedly installed at the front end of the wind turbine gearbox body, the inner shaft ring and the central inner surface of the front cover plate are rotatably connected to a rotating shaft, a planetary gear transmission mechanism is arranged on the outside of the rotating shaft, a spline portion is arranged at one end of the rotating shaft, a transmission lubrication mechanism is arranged between the rotating shaft and the planetary gear transmission mechanism, the transmission lubrication mechanism comprises a fixed ring, a limit strip, an annular plate and an arc-shaped limit insert, the planetary gear transmission mechanism comprises a planetary gear disk, a sun gear and a planetary gear, the center of the planetary gear is rotatably connected to a planetary shaft, a bearing lubrication mechanism is rotatably connected between the planetary shaft and the planetary gear, and the bearing lubrication mechanism comprises an inner bearing ring and an outer bearing ring.

[0009] Preferably, a central oil hole is opened on the central inner wall of the rotating shaft, an oil sealing block is embedded and installed at one end of the central oil hole, thread grooves are evenly opened on the inner wall of the central oil hole, and oil inlet holes are evenly opened on the inner wall of the middle end of the central oil hole. The oil inlet holes are provided in multiple groups, and the multiple groups of oil inlet holes are arranged in a circular array about the central axis of the rotating shaft, and the outside of the oil inlet holes is interconnected with the inner surface of the sun gear.

[0010] Preferably, the inner surface of the sun gear is movably connected to the outer surface of the rotating shaft, and oil outlets are evenly arranged on the inner wall of the sun gear, and the oil outlets are distributed corresponding to the oil inlet holes. The outer surface of the sun gear is provided with teeth, and inter-tooth grooves are arranged between adjacent teeth. Side grooves are respectively arranged on the inner walls on both sides of the inter-tooth grooves, and oil absorption sheets are embedded and installed on the inner surfaces of the side grooves, and the thickness of the oil absorption sheets is slightly larger than the depth of the inter-tooth grooves.

[0011] Preferably, a limiting groove is provided on the central inner ring wall surface of the sun gear, the inner surface of the limiting groove is fixedly connected to the outer surface of the limiting bar, the limiting bar is fixedly mounted on the outer surface of the rotating shaft, an arc groove is provided on the inner wall of one end of the sun gear, an arc-shaped limiting insert is movably inserted into the inner surface of the arc groove, and the arc-shaped limiting insert is fixedly mounted on the outer surface of one side of the fixed ring.

[0012] Preferably, the inner surface of the fixed ring is fixedly connected to the outer surface of the rotating shaft, and an embedding groove is provided on the inner wall of the outer ring of the fixed ring. A locking frame plate is fixedly installed on the inner surface of the embedding groove. The locking frame plate is arranged as a hollow frame structure, and a flared portion is provided at one end of the locking frame plate. The flared portion has an opening structure that is wide on the outside and narrow on the inside, and a reserved square groove is provided on the inner wall of the upper end of the locking frame plate.

[0013] Preferably, the inner surface of the reserved square groove is movably connected with a locking protrusion, and a locking spring rod is fixedly connected to one side of the locking protrusion. The locking spring rod and the locking protrusion are arranged as an integrally formed structure, and the locking spring rod as a whole presents an "L"-shaped block structure. The locking spring rod is fixedly mounted on the outer side surface of the annular plate, and the annular plate is fixedly mounted on one end of the sun gear.

[0014] Preferably, three groups of planetary wheels are provided, and the outer surfaces of the planetary wheels mesh with the outer surface of the sun wheel for rotation, and the outer surfaces of the planetary wheels mesh with the inner tooth surfaces of the planetary gear disc.

[0015] Preferably, the inner ring surface of the planetary gear is fixedly connected to the outer surface of the outer bearing ring, the two ends of the outer bearing ring are respectively fixedly connected with side connecting plates, the inner sides of the side connecting plates are fixedly connected to the two ends of the inner bearing ring, the inner surface of the inner bearing ring is rotatably connected to the outer surface of the planetary shaft, and balls are rotatably installed between the inner sides of the inner bearing ring and the outer bearing ring.

[0016] Preferably, an oil guide groove is opened on the inner wall of the outer bearing ring, and the oil guide groove includes a wide opening and a narrow opening, and the wide opening and the narrow opening are an integrally formed hollow groove structure, and the oil guide groove runs through the inner wall of the outer bearing ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] An integrated wind power gearbox proposed in the present invention has a central oil hole on the central inner wall of the rotating shaft to ensure that the lubricating oil is distributed in the inner cavity under high-speed rotation and centrifugal action. The transmission lubrication mechanism is set up, and the lubricating oil is transmitted to the teeth of the sun gear. When the planetary gear and the outer surface of the sun gear are matched and meshed, the distribution of the lubricating oil between the teeth is realized to avoid rotational wear between the gears. The optimized design of the bearing lubrication mechanism between the planetary gear and the planetary shaft can be used to receive excess oil and allow the lubricating oil to penetrate into between the inner bearing ring and the outer bearing ring, thereby ensuring uniform lubrication and extending the service life of the bearing lubrication mechanism, solving the problem of easy wear and deformation between the existing planetary gear transmission structure and the rotating shaft and between the gears, and can accurately lubricate the teeth of the planetary gear to avoid tooth wear and deformation and bearing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0020] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0021] Figure 3 It is a schematic diagram of the partial cross-section structure of the wind turbine gearbox body of the present invention.

[0022] Figure 4 It is a schematic diagram of the connection structure between the planetary gear transmission mechanism and the rotating shaft of the present invention.

[0023] Figure 5 It is a schematic diagram of the connection structure between the rotating shaft and the sun gear of the present invention.

[0024] Figure 6 For the present invention Figure 5 A is an enlarged structural diagram of FIG.

[0025] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at B.

[0026] Figure 8 It is a structural schematic diagram of the assembled state of the annular plate and the fixing ring of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Enlarged structural diagram at C.

[0028] Fig.10 It is a schematic diagram of the disassembled structure of the sun gear, the fixed ring and the annular plate of the present invention.

[0029] Fig.11 For the present invention Fig.10 Enlarged structural diagram at D.

[0030] Fig.12 It is a schematic diagram of a half-section structure of the sun gear of the present invention in a side view.

[0031] Fig.13 It is a schematic diagram of the cut-away cross-sectional structure of the rotating shaft of the present invention.

[0032] Fig.14 For the present invention Fig.13 Enlarged structural diagram at E.

[0033] Fig.15 It is a schematic diagram of the connection structure between the planetary gear and the bearing lubrication mechanism of the present invention.

[0034] Fig.16 It is a schematic cross-sectional structure diagram of the planetary gear and bearing lubrication mechanism of the present invention.

[0035] Fig.17 For the present invention Fig.16 Enlarged structural diagram of F.

[0036] In the figure: 1, wind turbine gearbox body; 2, inner shaft ring; 3, front cover; 4, rotating shaft; 40, central oil hole; 400, oil inlet hole; 41, spline part; 411, oil seal block; 42, fixed ring; 420, embedded groove; 421, locking frame plate; 422, flared part; 423, reserved square groove; 43, limit strip; 430, limit groove; 44, annular plate; 441, locking spring rod; 44 2. Locking protrusion; 45. Arc-shaped limit insert; 450. Arc-shaped groove; 5. Planetary gear transmission mechanism; 51. Planetary gear plate; 52. Sun gear; 53. Planetary gear; 520. Oil outlet; 6. Inter-tooth groove; 61. Side groove; 62. Oil absorption plate; 7. Planetary shaft; 8. Bearing lubrication mechanism; 81. Inner bearing ring; 82. Outer bearing ring; 83. Side connecting plate; 84. Ball; 820. Oil guide groove. DETAILED DESCRIPTION

[0037] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] For example, see Figure 1-17The present invention provides a technical solution: an integrated wind turbine gearbox, comprising a wind turbine gearbox body 1, wherein an inner shaft ring 2 is rotatably connected to the inside of the wind turbine gearbox body 1, a front cover plate 3 is fixedly installed at the front end of the wind turbine gearbox body 1, and a rotating shaft 4 is rotatably connected to the central inner surface of the inner shaft ring 2 and the front cover plate 3, and a planetary gear transmission mechanism 5 is arranged outside the rotating shaft 4, and a spline portion 41 is arranged at one end of the rotating shaft 4, and a transmission lubrication mechanism is arranged between the rotating shaft 4 and the planetary gear transmission mechanism 5, and the transmission lubrication mechanism comprises a fixed ring 42, a limiting strip 43, an annular plate 44 and an arc-shaped limiting insert 45, and the planetary gear transmission mechanism 5 comprises a planetary gear disc 51, a sun gear 52 and a planetary gear 53, and the center of the planetary gear 53 is rotatably connected to a planetary shaft 7, and a bearing lubrication mechanism 8 is rotatably connected between the planetary shaft 7 and the planetary gear 53, and the bearing lubrication mechanism 8 comprises an inner shaft The bearing ring 81 and the outer bearing ring 82; by opening a central oil hole 40 on the central inner wall of the rotating shaft 4, it is ensured that the lubricating oil is distributed in the inner cavity under high-speed rotation and centrifugal action. The transmission lubrication mechanism is set up, and the lubricating oil is transmitted to the teeth of the sun gear 52. When the planetary gear 53 and the outer surface of the sun gear 52 are adapted and meshed, the distribution of the lubricating oil between the teeth is realized to avoid rotational wear between the gears. The optimized design of the bearing lubrication mechanism 8 between the planetary gear 53 and the planetary shaft 7 can be used to receive excess oil and allow the lubricating oil to penetrate into the space between the inner bearing ring 81 and the outer bearing ring 82, ensuring uniform lubrication while extending the service life of the bearing lubrication mechanism 8, solving the problem of easy wear and deformation between the existing planetary gear transmission structure and the rotating shaft and between the gears, and can accurately lubricate the planetary gear teeth to avoid tooth wear and deformation and bearing damage.

[0039] Embodiment 2, refer to the attached Figure 1-17 On the basis of the first embodiment, in order to realize the self-lubrication of the rotating shaft 4 and the sun gear 52: a central oil hole 40 is opened on the central inner wall of the rotating shaft 4, an oil sealing block 411 is embedded and installed at one end of the central oil hole 40, thread grooves are evenly opened on the inner wall of the central oil hole 40, and oil inlet holes 400 are evenly opened on the inner wall of the middle end of the central oil hole 40. There are multiple groups of oil inlet holes 400, and the multiple groups of oil inlet holes 400 are arranged in a circular array about the central axis of the rotating shaft 4, and the outer part of the oil inlet holes 400 is connected to the outer surface of the oil inlet holes 400. The inner surfaces of the sun gear 52 are interconnected; the inner surface of the sun gear 52 is movably connected to the outer surface of the rotating shaft 4, and oil outlets 520 are evenly opened on the inner wall of the sun gear 52, and the oil outlets 520 are distributed corresponding to the oil inlet holes 400. The outer surface of the sun gear 52 is provided with teeth, and inter-tooth grooves 6 are opened between adjacent teeth. Side grooves 61 are respectively opened on the inner walls of the inter-tooth grooves 6 on both sides, and oil absorption sheets 62 are embedded and installed on the inner surface of the side grooves 61. The thickness of the oil absorption sheet 62 is slightly greater than the depth of the inter-tooth grooves 6.

[0040] The lubricating oil is injected by opening a central oil hole 40 on the inner wall of the rotating shaft 4. The reason why the thread grooves are evenly opened on the inner wall of the central oil hole 40 is that, on the one hand, the design of the thread grooves can increase the fluidity of the lubricating oil, making it easier for the lubricating oil to flow along the groove wall and cover the various tooth grooves and contact surfaces of the central oil hole 40, reducing the occurrence of lubrication dead angles and dry friction phenomena, and the uniform distribution of the lubricating oil can improve the lubrication effect of the rotating shaft 4, reduce wear and friction losses, and thus extend the service life of the rotating shaft 4; when the lubricating oil is transmitted through multiple groups of oil inlet holes 400, a part of the lubricating oil is transferred to the rotating shaft 4 by the high-speed centrifugal Under the action of rotation, the lubricating oil enters the oil outlet 520, and a part of the lubricating oil is between the rotating shaft 4 and the sun gear 52. After the lubricating oil is transmitted through the oil outlet 520, it is stored in the inner part of the inter-tooth groove 6. At this time, the lubricating oil is retained by the oil absorption sheet 62. When the sun gear 52 and the planetary gear 53 mesh and rotate, the oil absorption sheet 62 is squeezed. At this time, the lubricating oil overflows and is then distributed in the parts between the teeth, realizing self-lubrication between the planetary gear 53 and the sun gear 52. At the same time, it will not cause excessive waste of oil, further solving the problem of easy wear and deformation between the existing planetary gear transmission structure and the rotating shaft and between the gears.

[0041] Embodiment 3, refer to the attached Figure 1-17 On the basis of the second embodiment, in order to realize the assembly locking of the sun gear 52 and the rotating shaft 4: a limiting groove 430 is provided on the central inner ring wall surface of the sun gear 52, the inner surface of the limiting groove 430 is fixedly connected to the outer surface of the limiting strip 43, the limiting strip 43 is fixedly installed on the outer surface of the rotating shaft 4, an arc groove 450 is provided on the inner wall of one end of the sun gear 52, an arc limiting insert 45 is movably inserted on the inner surface of the arc groove 450, and the arc limiting insert 45 is fixedly installed on the outer surface of one side of the fixed ring 42; the inner surface of the fixed ring 42 is fixedly connected to the outer surface of the rotating shaft 4, an embedding groove 420 is provided on the inner wall of the outer ring of the fixed ring 42, and the inner surface of the embedding groove 420 A locking frame plate 421 is fixedly installed, and the locking frame plate 421 is set as a hollow frame structure. A flared portion 422 is opened at one end of the locking frame plate 421, and the flared portion 422 is an opening structure that is wide outside and narrow inside. A reserved square groove 423 is opened on the inner wall of the upper end of the locking frame plate 421; a locking protrusion 442 is movably connected to the inner surface of the reserved square groove 423, and a locking spring rod 441 is fixedly connected to one side of the locking protrusion 442. The locking spring rod 441 and the locking protrusion 442 are set as an integrally formed structure. The locking spring rod 441 is an "L"-shaped block structure as a whole. The locking spring rod 441 is fixedly installed on the outer side of the annular plate 44, and the annular plate 44 is fixedly installed on one end of the sun gear 52;

[0042] When assembling the sun gear 52, the sun gear 52 is inserted from one end of the spline portion 41, and the limiting groove 430 on the inner side of the sun gear 52 is aligned with one end of the limiting strip 43, and the sun gear 52 is continuously pushed toward the side of the fixed ring 42. At this time, the inner surface of the limiting groove 430 is slidably adapted to the outer surface of the limiting strip 43. Subsequently, the arc-shaped limiting insert 45 connected to one side of the fixed ring 42 is inserted into the arc-shaped groove 450 at one end of the sun gear 52. The preliminary assembly of the sun gear 52 is achieved through double limiting. After the arc-shaped limiting insert 45 is fully inserted into the arc-shaped groove 450, the locking spring rod 441 connected to the outer side of the annular plate 44 is gradually inserted into the locking spring rod 441. The locking rod 441 is inside the frame plate 421, and at this time the locking spring rod 441 gradually deforms from the stretched state, and then when the locking protrusion 442 reaches the position of the reserved square groove 423, it enters the inside of the reserved square groove 423 and actively completes the locking with the locking frame plate 421. The multiple groups of locking frame plates 421 limit the locking spring rod 441, thereby ensuring the limited locking of the sun gear 52 after assembly, and improving the stability of the sun gear 52 when rotating at high speed; when the locking spring rod 441 needs to be disassembled, it is only necessary to press the locking protrusion 442 inward with the thumb to compress the locking spring rod 441, and then the sun gear 52 can be pulled out as a whole.

[0043] Embodiment 4, refer to the attached Figure 1-17 On the basis of the third embodiment, in order to fully utilize the lubricating oil and reduce the damage to the bearing lubrication mechanism 8 when the planetary gear 53 rotates: three groups of planetary gears 53 are provided, and the outer surface of the planetary gear 53 meshes and rotates with the outer surface of the sun gear 52, and the outer surface of the planetary gear 53 meshes with the inner tooth surface of the planetary gear 51; the inner ring surface of the planetary gear 53 is fixedly connected to the outer surface of the outer bearing ring 82, and the two ends of the outer bearing ring 82 are respectively fixedly connected with side connecting plates 83, and the inner side of the side connecting plate 83 is fixedly connected to the two ends of the inner bearing ring 81, and the inner surface of the inner bearing ring 81 is rotatably connected to the outer surface of the planetary shaft 7, and a ball 84 is rotatably installed between the inner side of the inner bearing ring 81 and the inner side of the outer bearing ring 82; an oil guide groove 820 is opened on the inner wall of the outer bearing ring 82, and the oil guide groove 820 includes a wide mouth and a narrow mouth, and the wide mouth and the narrow mouth are an integrally formed empty groove structure, and the oil guide groove 820 runs through the inner wall of the outer bearing ring 82;

[0044] The lubricating oil transmitted through the oil outlet 520 enters the inter-tooth groove 6 for storage, and the lubricating oil overflowed from the squeezed oil absorbing sheet 62 is thrown out to the surroundings by the high-speed centrifugal effect. At this time, through the optimized design of the bearing lubrication mechanism 8 between the planetary gear 53 and the planetary shaft 7, a unique oil guide groove 820 lubrication channel is opened on the inner wall of the outer bearing ring 82. The channel is cleverly combined with a wide mouth and a narrow mouth to form an integrally formed empty groove structure, and runs through the entire inner wall of the outer bearing ring 82, which can capture and utilize the lubricating oil thrown out by the oil absorbing sheet 62 under high-speed rotation, and pass through the outer bearing The close connection between the ring 82 and the inner bearing ring 81 and the precise layout of the lubrication channel of the oil guide groove 820 effectively guides and receives the ejected lubricating oil, a part of which directly penetrates into the space between the inner bearing ring 81 and the outer bearing ring 82 and directly acts on key rotating parts such as the ball 84, thereby significantly improving the lubrication effect and reducing the heat and wear generated by friction. This further solves the problem of wear and deformation between the existing planetary gear transmission structure and the rotating shaft and between the gears, and can accurately lubricate the planetary gear teeth to avoid tooth wear and deformation and bearing damage.

[0045] The working principle and use process of the present invention are as follows: in actual use, first, a central oil hole 40 is provided on the inner wall of the rotating shaft 4 to inject lubricating oil. The inner wall of the central oil hole 40 is evenly provided with thread grooves. When the lubricating oil is transmitted through multiple groups of oil inlet holes 400, a part of the lubricating oil enters the oil outlet 520 under the action of high-speed centrifugal rotation, and a part of the lubricating oil is between the rotating shaft 4 and the sun gear 52. After the lubricating oil is transmitted through the oil outlet 520, it is stored in the inner part of the inter-tooth groove 6. At this time, the lubricating oil is retained by the oil absorbing sheet 62, and when the sun gear 52 and the planetary gear 53 mesh and rotate, the oil absorbing sheet 62 is squeezed, and the lubricating oil overflows and is then distributed in the inter-tooth positions, thereby realizing self-lubrication between the planetary gear 53 and the sun gear 52. When assembling the sun gear 52, the sun gear 52 is inserted from one end of the spline portion 41, and the limiting groove 430 on the inner side of the sun gear 52 is aligned with one end of the limiting strip 43, and the sun gear 52 is continuously pushed toward the side of the fixed ring 42. At this time, the limiting groove 430 on the inner side of the sun gear 52 is aligned with one end of the limiting strip 43, and the sun gear 52 is continuously pushed toward the side of the fixed ring 42. The inner surface of the groove 430 is slidably matched with the outer surface of the limiting strip 43, and then the arc-shaped limiting insert 45 connected to one side of the fixing ring 42 is inserted into the arc-shaped groove 450 at one end of the sun gear 52. The preliminary assembly of the sun gear 52 is achieved through double limiting. After the arc-shaped limiting insert 45 is completely inserted into the arc-shaped groove 450, the locking spring rod 441 connected to the outer side of the annular plate 44 is gradually inserted into the interior of the locking frame plate 421, and the locking spring rod 441 at this time is gradually deformed from the stretched state, and then the locking protrusion 442 is pressed against the locking protrusion 442. When reaching the position of the reserved square groove 423, it enters the interior of the reserved square groove 423 and actively completes the locking between the locking frame plate 421. The multiple sets of locking frame plates 421 restrict the locking spring rod 441, thereby ensuring the limited locking of the sun gear 52 after assembly, and improving the stability of the sun gear 52 during high-speed rotation; when it is necessary to disassemble the locking spring rod 441, it is only necessary to press the locking protrusion 442 inward with the thumb to compress the locking spring rod 441, and then the sun gear 52 can be pulled out as a whole.

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

Claims

1. An integrated wind turbine gearbox, comprising a wind turbine gearbox body (1), characterized in that: The wind turbine gearbox body (1) is rotatably connected to an inner shaft ring (2), a front cover plate (3) is fixedly mounted on the front end of the wind turbine gearbox body (1), a rotating shaft (4) is rotatably connected to the inner surface of the inner shaft ring (2) and the central inner surface of the front cover plate (3), a planetary gear transmission mechanism (5) is arranged on the outside of the rotating shaft (4), a spline portion (41) is arranged at one end of the rotating shaft (4), a transmission lubrication mechanism is arranged between the rotating shaft (4) and the planetary gear transmission mechanism (5), and the transmission lubrication mechanism The structure comprises a fixed ring (42), a limiting strip (43), an annular plate (44) and an arc-shaped limiting insert (45); the planetary gear transmission mechanism (5) comprises a planetary toothed disc (51), a sun gear (52) and a planetary gear (53); the center of the planetary gear (53) is rotatably connected to a planetary shaft (7); a bearing lubrication mechanism (8) is rotatably connected between the planetary shaft (7) and the planetary gear (53); the bearing lubrication mechanism (8) comprises an inner bearing ring (81) and an outer bearing ring (82); A central oil hole (40) is provided on the central inner wall of the rotating shaft (4), an oil sealing block (411) is embedded and installed at one end of the central oil hole (40), thread grooves are evenly provided on the inner wall of the central oil hole (40), and oil inlet holes (400) are evenly provided on the inner wall of the middle end of the central oil hole (40), and a plurality of groups of the oil inlet holes (400) are arranged in a circular array about the central axis of the rotating shaft (4), and the outside of the oil inlet holes (400) and the inner surface of the sun gear (52) are mutually connected; The inner surface of the sun gear (52) is movably connected to the outer surface of the rotating shaft (4); oil outlets (520) are evenly arranged on the inner wall of the sun gear (52); the oil outlets (520) are distributed correspondingly to the oil inlet holes (400); teeth are arranged on the outer surface of the sun gear (52); inter-tooth grooves (6) are arranged between adjacent teeth; side grooves (61) are respectively arranged on the inner walls of both sides of the inter-tooth grooves (6); an oil absorption sheet (62) is embedded and installed on the inner surface of the side grooves (61); the thickness of the oil absorption sheet (62) is slightly greater than the depth of the inter-tooth grooves (6); A limiting groove (430) is provided on the central inner ring wall surface of the sun gear (52); the inner surface of the limiting groove (430) is fixedly connected to the outer surface of the limiting strip (43); the limiting strip (43) is fixedly mounted on the outer surface of the rotating shaft (4); an arc-shaped groove (450) is provided on the inner wall of one end of the sun gear (52); an arc-shaped limiting insert (45) is movably inserted into the inner surface of the arc-shaped groove (450); and the arc-shaped limiting insert (45) is fixedly mounted on the outer surface of one side of the fixed ring (42); The inner surface of the fixed ring (42) is fixedly connected to the outer surface of the rotating shaft (4); an embedding groove (420) is provided on the inner wall of the outer ring of the fixed ring (42); a locking frame plate (421) is fixedly installed on the inner surface of the embedding groove (420); the locking frame plate (421) is arranged as a hollow frame structure; a flared portion (422) is provided at one end of the locking frame plate (421); the flared portion (422) is an opening structure that is wide outside and narrow inside; a reserved square groove (423) is provided on the inner wall of the upper end of the locking frame plate (421); The inner surface of the reserved square groove (423) is movably connected with a locking protrusion (442), one side of the locking protrusion (442) is fixedly connected with a locking spring rod (441), the locking spring rod (441) and the locking protrusion (442) are arranged as an integrally formed structure, the locking spring rod (441) is an "L"-shaped block structure as a whole, the locking spring rod (441) is fixedly mounted on the outer side surface of the annular plate (44), and the annular plate (44) is fixedly mounted on one end of the sun gear (52); An oil guide groove (820) is provided on the inner wall of the outer bearing ring (82), and the oil guide groove (820) includes a wide opening and a narrow opening, and the wide opening and the narrow opening are an integrally formed hollow groove structure. The oil guide groove (820) runs through the inner wall of the outer bearing ring (82).

2. The integrated wind turbine gearbox according to claim 1, characterized in that: The planetary gears (53) are provided in three groups, and the outer surfaces of the planetary gears (53) mesh with the outer surface of the sun gear (52) for rotation, and the outer surfaces of the planetary gears (53) mesh with the inner tooth surfaces of the planetary gear disc (51).

3. The integrated wind turbine gearbox according to claim 2, characterized in that: The inner ring surface of the planetary gear (53) is fixedly connected to the outer surface of the outer bearing ring (82), the two ends of the outer bearing ring (82) are respectively fixedly connected with side connecting plates (83), the inner side of the side connecting plates (83) is fixedly connected to the two ends of the inner bearing ring (81), the inner side surface of the inner bearing ring (81) is rotatably connected to the outer surface of the planetary shaft (7), and a ball (84) is rotatably installed between the inner sides of the inner bearing ring (81) and the outer bearing ring (82).

Images