Wind power transmission structure and wind power driving device
Through the design of the plug-in matching structure and the friction-enhancing layer, the problems of large volume, heavy weight and high cost of the wind power transmission structure are solved, and reliable torque transmission and cost reduction are achieved.
Patent Information
- Application Number
- CN202423267241.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the prior art, as the megawatt level of the gearbox increases, the wind power transmission structure becomes larger in size, heavier in weight, and has higher production costs.
The plug-in fit structure and the wear-increasing layer are adopted. The friction between the main shaft and the input shaft is increased through the tapered fit of the fixing ring and the tightening ring. The wear-increasing layer and the oil channel structure are combined to achieve reliable torque transmission.
The reliability of the main shaft transmitting torque to the input shaft is improved, and the size, weight and manufacturing cost of the shrink disk caused by the increase in the size of the gear box are reduced.
Smart Images
Figure CN223469380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wind power technology field especially wind power transmission structure and wind power drive arrangement. BACKGROUND
[0002] Wind power as a kind of renewable energy, compared with using fire power generation, solar power generation or hydroelectric power generation, using wind energy to generate electricity has the advantages of low construction cost, small footprint, easy maintenance and so on.Usually, the main shaft of the wind turbine is connected with the input shaft of the gear box.In order to ensure the transmission torque of the wind turbine and facilitate the disassembly and maintenance of the wind turbine and / or gear box, a wind power transmission structure in the prior art rotates and inserts the main shaft and the input shaft of the gear box, and a contraction disc is arranged at the connection between the main shaft and the input shaft of the gear box.The input shaft of the gear box is tightened on the main shaft by the contraction disc, so that the main shaft can effectively transmit torque to the input shaft of the gear box.But with the continuous increase of megawatt level of the gear box, if you want to ensure that the main shaft can effectively transmit torque to the input shaft of the gear box, you need to increase the size of the contraction disc continuously, which will result in large volume, heavy weight and high production cost of the wind power transmission structure. SUMMARY
[0003] The utility model aims at providing wind power transmission structure and wind power drive arrangement to solve the above-mentioned problems existing in the prior art when the megawatt level of the gear box is continuously increased.
[0004] To achieve this purpose, the utility model adopts the following technical scheme:
[0005] The wind power transmission structure is used for connecting the main shaft of the wind turbine and the input shaft of the wind power gear box, and the one end of the main shaft along the axial direction is inserted and matched with the one end of the input shaft along the axial direction to form an insertion and matching structure.The wind power transmission structure comprises:
[0006] The contraction fastening structure comprises a fixed ring and a tightening ring, the fixed ring is fixedly sleeved on the outer periphery of the insertion and matching structure, the tightening ring is sleeved on the fixed ring and detachably connected with the fixed ring, and the outer peripheral surface of the fixed ring and the inner peripheral surface of the tightening ring are conical surface matched;
[0007] The abrasion-increasing layer is fixedly arranged at the insertion and matching position of the main shaft and the input shaft, and the abrasion-increasing layer is used for increasing the mutual friction force between the main shaft and the input shaft.
[0008] As a preferred scheme of the above-mentioned wind power transmission structure, one of the one end of the main shaft along the axial direction and the one end of the input shaft along the axial direction is provided with an insertion slot, and the other is provided with an insertion part;At least part of the inner peripheral surface of the insertion slot is a conical surface, at least part of the outer peripheral surface of the insertion part is a conical surface, and the insertion slot and the insertion part are conical surface matched.
[0009] As a preferred scheme of the wind power transmission structure, one of the axial end of the main shaft and the axial end of the input shaft is provided with a slot, and the other is provided with a plug-in part, the slot and the plug-in part are plug-in matched to form the plug-in matched structure; the inner circumferential surface of the slot and / or the outer circumferential surface of the plug-in part is fixedly provided with the wear-increasing layer.
[0010] As a preferred scheme of the wind power transmission structure, the inner bottom wall of the slot in the axial direction and / or the axial end surface of the plug-in part is fixedly provided with the wear-increasing layer.
[0011] As a preferred scheme of the wind power transmission structure, the wear-increasing layer is an annular wear-increasing layer; or, the wear-increasing layer comprises a plurality of arc-shaped sub-wear-increasing layers, and the plurality of sub-wear-increasing layers are distributed in the circumferential direction of the main shaft.
[0012] As a preferred scheme of the wind power transmission structure, the wear-increasing layer is a sandblasting layer, a paint spraying layer or a zinc spraying layer.
[0013] As a preferred scheme of the wind power transmission structure, the shrinkage fastening structure further comprises a first connecting piece, the first connecting piece is threadedly connected to the fixed ring and the tightening ring in the axial direction of the main shaft.
[0014] As a preferred scheme of the wind power transmission structure, the shrinkage fastening structure further comprises a connecting shell, one end of the connecting shell is detachably connected to the main shaft in the axial direction of the main shaft, the other end of the connecting shell is detachably connected to the input shaft, and the plug-in matched structure is located between the two ends of the connecting shell in the axial direction of the main shaft.
[0015] The shrinkage fastening structure further comprises a second connecting piece, the second connecting piece is threadedly connected to the connecting shell in the radial direction of the main shaft and abuts against the tightening ring.
[0016] As a preferred scheme of the wind power transmission structure, the outer circumferential surface of the fixed ring is provided with two sealing rings, and both of the two sealing rings are used for sealing the gap between the outer circumferential surface of the fixed ring and the inner circumferential surface of the tightening ring.
[0017] The tightening ring is provided with a first oil channel penetrating in the radial direction, and the first oil channel is located between the two sealing rings in the axial direction of the main shaft, and the first oil channel and one of the sealing rings are away from the other sealing ring and the large end of the fixed ring.
[0018] The wind power driving device comprises a fan and a wind power gear box, and further comprises the wind power transmission structure.
[0019] The wind power driving device comprises a fan and a wind power gear box, and further comprises the wind power transmission structure.
[0020] The utility model provides a wind power transmission structure and wind power drive arrangement. Wind power transmission structure is used for connecting the main shaft of fan and the input shaft of wind power gear box, and the one end of main shaft along the axial direction and the one end of input shaft along the axial direction are inserted and fit, and form the inserted fit structure. The utility model discloses a wind power transmission structure, which comprises a contraction fastening structure and a wear-increasing layer.
[0021] When assembling the main shaft and the input shaft into a whole, the one end of the main shaft along the axial direction and the one end of the input shaft along the axial direction are inserted and fit first to form the inserted fit structure, then the tightening ring is sleeved on the fixed ring and detachably connected with the fixed ring, and the inner peripheral surface of the fixed ring and the outer peripheral surface of the tightening ring are conical surface matched, so that when the tightening ring is connected with the fixed ring, the tightening ring is tightened along the radial direction of the fixed ring, thereby tightening the one end of the main shaft along the axial direction and the one end of the input shaft along the axial direction located outside each other, so that the main shaft can effectively transmit torque to the input shaft.
[0022] Secondly, by arranging the wear-increasing layer at the inserted fit position of the main shaft and the input shaft, the wear-increasing layer is used to increase the mutual friction force between the main shaft and the input shaft, so that the reliability of the torque transmission from the main shaft to the input shaft can be further improved, and the problems of large size, heavy weight and high manufacturing cost of the contraction disc caused by the increase of the megawatt level of the gear box can be effectively reduced.
[0023] Therefore, by adopting the wind power transmission structure, the reliability of the torque transmission from the main shaft to the input shaft can be effectively improved, and the problems of large size, heavy weight and high manufacturing cost of the contraction disc caused by the increase of the megawatt level of the gear box can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is the structure schematic of the wind power transmission structure provided by the specific embodiment of the utility model Figure 1 ;
[0025] Figure 2 is the assembly drawing of the main shaft and the wear-increasing layer provided by the specific embodiment of the utility model
[0026] Figure 3 is the structure schematic of the wind power transmission structure provided by the specific embodiment of the utility model Figure 2 ;
[0027] Figure 4 is the structure schematic of the wind power transmission structure provided by the specific embodiment of the utility model Figure 3 .
[0028] In the drawings:
[0029] 100, main shaft; 110, plug-in part;
[0030] 200, input shaft; 210, second oil channel;
[0031] 1, contraction fastening structure; 11, fixing ring; 111, limiting part; 12, tightening ring; 121, limiting groove; 122, first oil channel; 13, first connecting piece; 14, connecting shell; 15, second connecting piece; 16, sealing ring; 2, abrasion-resistant layer. DETAILED DESCRIPTION
[0032] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0034] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0035] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0036] The utility model provides a wind power transmission structure, like Figures 1-4 As shown in the figure, for connecting the main shaft 100 of fan and the input shaft 200 of wind power gear box, the one end of main shaft 100 along the axial direction and the one end of input shaft 200 along the axial direction are inserted and matched, and form the inserted and matched structure. The wind power transmission structure includes contraction fastening structure 1 and abrasion layer 2, wherein, contraction fastening structure 1 includes fixed ring 11 and tightening ring 12, fixed ring 11 is fixedly sleeved on the outer periphery of inserted and matched structure, tightening ring 12 is sleeved on fixed ring 11 and is detachably connected with fixed ring 11, and the inner peripheral surface of fixed ring 11 and the outer peripheral surface of tightening ring 12 are conical surface matched. Abrasion layer 2 is fixedly arranged at the inserted and matched place of main shaft 100 and input shaft 200, and abrasion layer 2 is used to increase the mutual friction force between main shaft 100 and input shaft 200.
[0037] When assembling main shaft 100 and input shaft 200 into a whole, first, the one end of main shaft 100 along the axial direction and the one end of input shaft 200 along the axial direction are inserted and matched, and form the inserted and matched structure, then, tightening ring 12 is sleeved on fixed ring 11 and is detachably connected with fixed ring 11, because the inner peripheral surface of fixed ring 11 and the outer peripheral surface of tightening ring 12 are conical surface matched, so when connecting tightening ring 12 with fixed ring 11 is completed, tightening ring 12 is tightened along the radial direction on fixed ring 11, so that one of the one end of main shaft 100 along the axial direction and the one end of input shaft 200 along the axial direction is tightened on the other one, so that main shaft 100 can effectively transmit torque to input shaft 200.
[0038] Secondly, by arranging abrasion layer 2 at the inserted and matched place of main shaft 100 and input shaft 200, the mutual friction force between main shaft 100 and input shaft 200 is increased by using abrasion layer 2, so that the reliability of transmitting torque from main shaft 100 to input shaft 200 can be further improved, and the problems of large size, heavy weight and high manufacturing cost of contraction disc caused by the increase of megawatt level of gear box can be effectively reduced.
[0039] Therefore, by adopting the wind power transmission structure, the reliability of transmitting torque from main shaft 100 to input shaft 200 can be effectively improved, and the problems of large size, heavy weight and high manufacturing cost of contraction disc caused by the increase of megawatt level of gear box can be effectively reduced.
[0040] It can be understood that when the megawatt level of gear box is small, the area of abrasion layer 2 can be adaptively reduced, and when the megawatt level of gear box is large, the area of abrasion layer 2 can be adaptively increased, so that the weight and manufacturing cost of wind power transmission structure can be reduced as much as possible on the basis of ensuring the reliability of transmitting torque from main shaft 100 to input shaft 200.
[0041] It can be understood that, as shown in Figure 1 , Figure 3 andFigure 4 As shown in the figure, the central axis of the main shaft 100, the rotation center line of the main shaft 100, the central axis of the input shaft 200, the rotation center line of the input shaft 200, the central axis of the fixed ring 11, the rotation center line of the fixed ring 11, the central axis of the tightening ring 12, and the rotation center line of the tightening ring 12 are all collinear.
[0042] Specifically, one of the axial end of the main shaft 100 and the axial end of the input shaft 200 is provided with a slot, and the other is provided with a plug-in part 110, and the slot and the plug-in part 110 are plug-in matched to form a plug-in matching structure. Specifically, in this embodiment, as shown in the figure, Figures 1-4 As shown in the figure, the axial end of the main shaft 100 is provided with a plug-in part 110, and the axial end of the input shaft 200 is provided with a slot as an example. As an alternative, a slot can be provided at the axial end of the main shaft 100, and a plug-in part 110 can be provided at the axial end of the input shaft 200.
[0043] Preferably, at least part of the inner circumferential surface of the slot is a tapered surface, and at least part of the outer circumferential surface of the plug-in part 110 is a tapered surface, and the slot and the plug-in part 110 are tapered matched. Specifically, the slot is a tapered slot, the plug-in part 110 is a tapered plug-in part, and the tapered slot and the tapered plug-in part are plug-in matched. As an alternative, the slot includes a first sub-slot and a second sub-slot connected in communication, and the plug-in part 110 includes a first sub-plug-in part and a second sub-plug-in part connected; the first sub-slot and the first sub-plug-in part are plug-in matched, and the inner circumferential surface of the first sub-slot and the outer circumferential surface of the first sub-plug-in part are tapered matched; the second sub-slot and the second sub-plug-in part are plug-in matched, and the inner circumferential surface of the first sub-slot and the outer circumferential surface of the first sub-plug-in part are cylindrical matched. In this way, the slot and the plug-in part 110 are plug-in matched to form a plug-in matching structure.
[0044] As another alternative, the slot is a cylindrical slot, and the plug-in part 110 is a cylindrical plug-in part, and the cylindrical slot and the cylindrical plug-in part are plug-in matched. The slot and the plug-in part 110 can also be plug-in matched to form a plug-in matching structure. In this embodiment, as shown in the figure, Figures 1-4 As shown in the figure, the slot is a cylindrical slot, and the plug-in part 110 is a cylindrical plug-in part, and the cylindrical slot and the cylindrical plug-in part are plug-in matched.
[0045] It can be understood that the specific shape of the slot and the plug-in part 110 is not limited, as long as the plug-in part 110 can be plug-in matched with the slot.
[0046] Further preferably, for the taper surface cooperation between the outer peripheral surface of the fixing ring 11 and the inner peripheral surface of the tightening ring 12, and the taper surface cooperation between the insertion slot and the insertion portion 110, the large end of the taper surface is closer to the other end of the main shaft 100 in the axial direction of the main shaft 100 than the small end of the taper surface. During the rotation of the main shaft 100 around the central axis thereof, the axial force transmitted to the main shaft 100 by the blades of the wind turbine can make the insertion portion 110 tightly inserted into the insertion slot in the axial direction of the main shaft 100, so that the reliability of the torque transmission from the main shaft 100 to the input shaft 200 can be further improved under the action of the abrasion-increasing layer 2.
[0047] Further preferably, for the taper surface cooperation between the outer peripheral surface of the fixing ring 11 and the inner peripheral surface of the tightening ring 12, and the taper surface cooperation between the insertion slot and the insertion portion 110, the taper surface is a conical surface. This is convenient for processing and has good assembly effect. Alternatively, the taper surface is a pyramid surface.
[0048] Preferably, the inner peripheral surface of the insertion slot and / or the outer peripheral surface of the insertion portion 110 and / or the inner bottom wall of the insertion slot in the axial direction and / or the axial end surface of the insertion portion 110 is fixedly provided with the abrasion-increasing layer 2. Specifically, the inner peripheral surface of the insertion slot and / or the outer peripheral surface of the insertion portion 110 and / or the inner bottom wall of the insertion slot in the axial direction and / or the axial end surface of the insertion portion 110 is fixedly provided with the abrasion-increasing layer 2 according to the megawatt level adaptability of the gearbox. As shown in Figures 1-4 , an exemplary embodiment is shown in which the inner peripheral surface of the insertion slot is fixedly provided with the abrasion-increasing layer 2, the outer peripheral surface of the insertion portion 110 is fixedly provided with the abrasion-increasing layer 2, the inner bottom wall of the insertion slot in the axial direction is fixedly provided with the abrasion-increasing layer 2, and the axial end surface of the insertion portion 110 is fixedly provided with the abrasion-increasing layer 2.
[0049] Specifically, as shown in Figure 2 , the abrasion-increasing layer 2 is an annular abrasion-increasing layer; or, the abrasion-increasing layer 2 comprises a plurality of arc-shaped sub-abrasion-increasing layers, and the plurality of sub-abrasion-increasing layers are distributed in the circumferential direction of the main shaft 100. It can be understood that when the megawatt level of the gearbox is large, a larger area of the abrasion-increasing layer 2 needs to be provided, and the annular abrasion-increasing layer 2 is preferred. When the megawatt level of the gearbox is small, the abrasion-increasing layer 2 preferably comprises a plurality of arc-shaped sub-abrasion-increasing layers, and the number of the sub-abrasion-increasing layers and the area of each sub-abrasion-increasing layer can be adjusted.
[0050] Specifically, the abrasion-increasing layer 2 is a sandblasting layer or a paint spraying layer or a zinc spraying layer. All of them can increase the friction between the inner peripheral surface of the insertion slot and the outer peripheral surface of the insertion portion 110. Specifically, the sandblasting layer is made of diamond sand and other stone sand materials. It can be understood that the abrasion-increasing layer 2 can also be made of other materials that can increase the friction.
[0051] Among them, as shown in Figure 1 , Figure 3 and Figure 4As shown, the shrinking and fastening structure 1 further includes a first connecting member 13, which passes through the larger end of the fixing ring 11 along the axial direction of the main shaft 100 and is threadedly connected to the tightening ring 12. This allows the fixing ring 11 and the tightening ring 12 to be detachably connected and the tightening ring 12 to be radially tightened against the fixing ring 11. Specifically, the first connecting member 13 is a screw.
[0052] Preferably, if Figure 1 、 Figure 3 and Figure 4 As shown, along the axial direction of the main shaft 100, a stopper 111 is provided on the outer periphery of the large end of the fixing ring 11. The tightening ring 12 is sleeved on the fixing ring 11 and can abut against the stopper 111 along the axial direction of the tightening ring 12. The first connecting member 13 passes through the stopper 111 along the axial direction of the main shaft 100 and is threadedly connected to the tightening ring 12. This effectively reduces the angle between the outer circumference of the fixing ring 11 and the central axis of the fixing ring 11, as well as the angle between the inner circumference of the tightening ring 12 and the central axis of the tightening ring 12, while ensuring a detachable connection between the fixing ring 11 and the tightening ring 12. This further reduces the volume, weight, and manufacturing cost of the fixing ring 11 and the tightening ring 12.
[0053] More preferably, Figure 1 、 Figure 3 and Figure 4 As shown, a limiting groove 121 is formed in the axial direction at the large end of the tightening ring 12. When the tightening ring 12 is sleeved on the fixing ring 11, the limiting portion 111 can be inserted into the limiting groove 121 along the axial direction of the tightening ring 12 and abut against the inner bottom wall of the limiting groove 121, thereby improving the aesthetics of the shrink fastening structure 1.
[0054] Specifically, the performance parameters of the tightening ring 12 are preferably better than those of the fixing ring 11, including but not limited to hardness. In this embodiment, the fixing ring 11 is a casting and the tightening ring 12 is a forging.
[0055] In this embodiment, the inner circumference of the retaining ring 11 is welded to the outer circumference of the input shaft 200. As an alternative, the retaining ring 11 can be integrally formed on the outer circumference of the input shaft 200. Both methods effectively ensure the reliability of the connection between the retaining ring 11 and the outer circumference of the input shaft 200.
[0056] Alternatively, as Figure 3As shown, the shrinkage fastening structure 1 further comprises a connecting shell 14, one end of the connecting shell 14 is detachably connected with the main shaft 100 along the axial direction of the main shaft 100, the other end of the connecting shell 14 is detachably connected with the input shaft 200, and the plug-in fitting structure is located between the two ends of the connecting shell 14 along the axial direction of the main shaft 100. The shrinkage fastening structure 1 further comprises a second connecting piece 15, the second connecting piece 15 is threadedly connected with the connecting shell 14 along the radial direction of the main shaft 100 and abuts against the tightening ring 12. In this way, the radial force can be applied to the shrinkage ring through the second connecting piece 15, so as to further enhance the effect of tightening the one located outside between the one end of the main shaft 100 along the axial direction and the one end of the input shaft 200 along the axial direction to the other, so as to further enhance the reliability of the torque transmission from the main shaft 100 to the input shaft 200. Specifically, the second connecting piece 15 is a screw. One end of the connecting shell 14 is detachably connected with the main shaft 100 through the screw, and the other end of the connecting shell 14 is detachably connected with the input shaft 200 through the screw.
[0057] Preferably, the number of the second connecting pieces 15 is multiple, and the multiple second connecting pieces 15 are spaced apart along the circumferential direction of the main shaft 100. In this way, the effect of tightening the one located outside between the one end of the main shaft 100 along the axial direction and the one end of the input shaft 200 along the axial direction to the other can be further enhanced. Specifically, the connecting shell 14 is a ring-shaped shell. Alternatively, the connecting shell 14 comprises multiple sub-shells spaced apart along the circumferential direction of the main shaft 100, and each of the sub-shells is provided with at least one second connecting piece 15.
[0058] As an alternative, as shown in FIG. 2, the plug-in fitting structure is located on the other end of the connecting shell 14 along the axial direction of the main shaft 100. Figure 4 As shown, the outer circumferential surface of the fixed ring 11 is provided with two sealing rings 16, and the two sealing rings 16 are used to seal the gap between the outer circumferential surface of the fixed ring 11 and the inner circumferential surface of the tightening ring 12. The tightening ring 12 is provided with a first oil channel 122 penetrating through the inner circumferential surface and the outer circumferential surface along the radial direction. Along the axial direction of the main shaft 100, the first oil channel 122 is located between the two sealing rings 16, and the first oil channel 122 and one of the sealing rings 16 are away from the large end of the fixed ring 11 relative to the other sealing ring 16. By filling the pressure oil into the gap between the outer circumferential surface of the fixed ring 11 and the inner circumferential surface of the tightening ring 12 through the first oil channel 122, the radial force is applied to the fixed ring 11 along the radial direction by the pressure oil, and the effect of tightening the one located outside between the one end of the main shaft 100 along the axial direction and the one end of the input shaft 200 along the axial direction to the other can be further enhanced, so as to further enhance the reliability of the torque transmission from the main shaft 100 to the input shaft 200. Specifically, when the tightening ring 12 is to be detached from the fixed ring 11, the pressure oil in the gap between the outer circumferential surface of the fixed ring 11 and the inner circumferential surface of the tightening ring 12 is discharged through the first oil channel 122, and then the first connecting piece 13 is screwed away from the fixed ring 11 and the tightening ring 12, so that the tightening ring 12 can be detached from the fixed ring 11.
[0059] Wherein, before the wear-resistant layer 2 is not set, the slot and the insertion part 110 are clearance fit or over-fit or interference fit. Preferably, the slot and the insertion part 110 are over-fit or interference fit. To further improve the reliability of the torque transmission from the main shaft 100 to the input shaft 200.
[0060] Preferably, as shown in Figure 1 、 Figure 3 and Figure 4 , the main shaft 100 and / or the input shaft 200 is provided with a second oil passage 210, one end of the second oil passage 210 is communicated with the pressure oil source, and the other end is communicated with the gap between the slot and the insertion part 110. When the input shaft 200 is to be detached from the main shaft 100, the gap between the slot and the insertion part 110 is filled with pressure oil through the second oil passage 210, and the slot can be expanded under the action of the pressure oil, so that the input shaft 200 can be quickly and efficiently detached from the main shaft 100 without damaging the slot and / or the insertion part 110. In the embodiment, as shown in Figure 1 、 Figure 3 and Figure 4 , the input shaft 200 is provided with a second oil passage 210. It is convenient to communicate the second oil passage 210 with the pressure oil source.
[0061] The utility model also provides a wind power driving device, including fan and wind power gear box, still include above-mentioned wind power transmission structure. Through using above-mentioned wind power transmission structure connects main shaft 100 and input shaft 200, can effectively improve the reliability of the torque transmission from the main shaft 100 to the input shaft 200, also can effectively reduce the weight and manufacturing cost of wind power driving device. Specifically, the wind power driving device includes a planet carrier. In the embodiment, the input shaft 200 is part of the structure at one axial end of the planet carrier. Wherein, the specific structure of the fan and the wind power gear box both belong to the prior art, and will not be repeated here.
[0062] Obviously, the above embodiments of the utility model are only for clear illustration of the utility model, and are not limited to the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.
Claims
1. A wind power transmission structure for connecting a main shaft (100) of a wind turbine and an input shaft (200) of a wind power gearbox, an axially one end of the main shaft (100) is insertedly fitted with an axially one end of the input shaft (200) to form an inserted fitting structure; characterized in that, The wind power transmission structure comprises: The shrinkage fastening structure (1) comprises a fixing ring (11) and a tightening ring (12), the fixing ring (11) is fixedly sleeved on the outer periphery of the plug-in structure, the tightening ring (12) is sleeved on the fixing ring (11) and detachably connected with the fixing ring (11), and the outer peripheral surface of the fixing ring (11) and the inner peripheral surface of the tightening ring (12) are conical surface matched; The abrasion-increasing layer (2) is fixedly arranged at the plug-in joint of the main shaft (100) and the input shaft (200), and is used for increasing the mutual friction force between the main shaft (100) and the input shaft (200).
2. The wind power transmission structure according to claim 1, characterized in that, One of the axial end of the main shaft (100) and the axial end of the input shaft (200) is provided with a slot, and the other is provided with a plug-in part (110); the inner peripheral surface of at least part of the slot is a conical surface, and the outer peripheral surface of at least part of the plug-in part (110) is a conical surface, and the slot and the plug-in part (110) are conical surface matched.
3. The wind power transmission structure according to claim 1, wherein One of the axial end of the main shaft (100) and the axial end of the input shaft (200) is provided with a slot, and the other is provided with a plug-in part (110), and the slot and the plug-in part (110) are plug-in matched to form the plug-in structure; the inner peripheral surface of the slot and / or the outer peripheral surface of the plug-in part (110) is fixedly provided with the abrasion-increasing layer (2).
4. The wind power transmission structure according to claim 3, characterized in that, The inner bottom wall of the slot in the axial direction and / or the axial end surface of the plug-in part (110) is fixedly provided with the abrasion-increasing layer (2).
5. The wind power transmission structure according to claim 1, wherein The abrasion-increasing layer (2) is an annular abrasion-increasing layer; or the abrasion-increasing layer (2) comprises a plurality of arc-shaped sub-abrasion-increasing layers, and the plurality of sub-abrasion-increasing layers are distributed in the circumferential direction of the main shaft (100).
6. The wind power transmission structure according to claim 1, characterized in that: The abrasion-increasing layer (2) is a sandblasting layer, a paint spraying layer or a zinc spraying layer.
7. The wind power transmission structure according to any one of claims 1 to 6, characterized in that, The shrinkage fastening structure (1) further comprises a first connecting piece (13), which is threadedly connected with the fixing ring (11) and the tightening ring (12) in the axial direction of the main shaft (100).
8. The wind power transmission structure according to any one of claims 1 to 6, characterized in that, The shrinkage fastening structure (1) further comprises a connecting shell (14), which is detachably connected with the main shaft (100) at one end and detachably connected with the input shaft (200) at the other end in the axial direction of the main shaft (100), and the plug-in structure is located between the two ends of the connecting shell (14) in the axial direction of the main shaft (100); The shrinkage fastening structure (1) further comprises a second connecting piece (15), which is threadedly connected with the connecting shell (14) in the radial direction of the main shaft (100) and abuts against the tightening ring (12).
9. The wind power transmission structure according to any one of claims 1 to 6, wherein The outer peripheral surface of the fixing ring (11) is provided with two sealing rings (16), and the two sealing rings (16) are used for sealing the gap between the outer peripheral surface of the fixing ring (11) and the inner peripheral surface of the tightening ring (12); The tightening ring (12) is provided with a first oil channel (122) penetrating in the radial direction, which is located between two sealing rings (16) along the axial direction of the main shaft (100), and the first oil channel (122) and one of the sealing rings (16) are away from the large end of the fixed ring (11) relative to the other sealing ring (16).
10. Wind power driven apparatus comprising a wind turbine and a wind power gear box, characterized in that The wind power transmission structure also comprises the wind power transmission structure according to any one of claims 1-9. The wind power transmission structure also comprises the wind power transmission structure according to any one of claims 1-9.