Gear ring fixed surface separating device for wind power gear box

Abstract

The utility model belongs to the technical field of wind power equipment, and discloses a gear ring fixed surface separating device for a wind power gear box. The wind power gear box comprises a first box body, a gear ring and a second box body which are connected in sequence. The gear ring fixed surface separating device for the wind power gear box comprises an annular lock frame and a fixing mechanism. The annular lock frame is arranged on the periphery of a gear ring in a sleeving mode and can be connected with the periphery of the gear ring in a locking mode. The annular lock frame comprises a plurality of supporting lock frames which are sequentially connected in the circumferential direction. The fixing mechanism comprises a plurality of fixing assemblies, the multiple fixing assemblies are arranged on the multiple supporting lock frames in a one-to-one correspondence mode, and the fixing assemblies can be fixedly connected with the first box body. According to the gear ring fixed surface separating device for the wind power gear box, when the wind power gear box is maintained and replaced on a tower, the gear ring and the first box body can be fixed, it is ensured that the gear ring and the second box body are separated, the uncertainty in the maintenance process is reduced, and the safety and stability in the maintenance process are improved.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment technology, and in particular to a gear ring fixing surface separation device for wind turbine gearboxes. Background Technology

[0002] The wind turbine gearbox is a key component of wind power generation equipment, primarily used to transfer the kinetic energy of the rotating wind turbine to the generator to produce electricity. Its operating status directly affects the safety and economy of the wind turbine unit. Compared to other components of the wind turbine unit, gearbox failure leads to the longest downtime, severely impacting the unit's power generation. The main reason is that gearbox failure requires removal from the tower for replacement. Currently, the commonly used method for removing the gearbox requires first removing the wind turbine and then removing the entire turbine's transmission chain from the tower for gearbox replacement, resulting in a long implementation cycle and excessive downtime. Furthermore, traditional methods also suffer from problems such as the need for large cranes, large construction sites, and long lifting times.

[0003] To address the aforementioned issues, a proprietary unpacking device has been designed to enable unpacking on the tower, allowing maintenance work to be completed directly on-tower. Existing large-megawatt gearboxes often have a three-way bolt, specifically, the gear ring bolt passes through the front housing, gear ring, and middle housing. During maintenance and replacement work, the gear ring is often caught in the middle, leading to uncertainty regarding the separation of the gear ring from adjacent mating surfaces. Specifically, the front or middle housing may partially separate from the gear ring, while remaining partially connected. This poses a risk of the housing or gear ring falling during maintenance, increasing the risks associated with on-tower maintenance.

[0004] Therefore, there is an urgent need for a gear ring positioning and separation device for wind turbine gearboxes to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a gear ring fixing and separation device for wind turbine gearboxes, which can fix the gear ring to the first gearbox body during maintenance and replacement on the wind turbine gearbox tower, ensuring the separation of the gear ring and the second gearbox body, reducing uncertainty in the maintenance process, and improving the safety and stability of the maintenance process.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A gear ring positioning separation device for a wind turbine gearbox, wherein the wind turbine gearbox includes a first housing, a gear ring, and a second housing connected in sequence, the aforementioned gear ring positioning separation device for a wind turbine gearbox includes:

[0008] A ring-shaped locking frame is sleeved on the outer circumference of the gear ring and can lock and connect the outer circumference of the gear ring; the ring-shaped locking frame includes multiple supporting locking frames, which are connected sequentially along the circumferential direction.

[0009] The fixing mechanism includes multiple fixing components, which are respectively disposed on multiple support lock frames, and the fixing components can be fixedly connected to the first housing.

[0010] Optionally, two adjacent support lock frames are fixedly connected by a number of first fasteners.

[0011] Optionally, a buffer pad is provided between two adjacent support lock frames to adjust the degree of locking of the annular lock frame to the outer periphery of the gear ring.

[0012] Optionally, the aforementioned fixing component includes a first fixing part and a first fixing member, wherein the first fixing member is disposed opposite to the mounting part of the first housing to lock the first fixing part and the mounting part together.

[0013] Optionally, the aforementioned fixing assembly further includes a second fixing part and a second fixing member, wherein the second fixing part is provided in a one-to-one correspondence with the mounting lugs of the first housing, for locking the second fixing part and the mounting lugs together.

[0014] Optionally, a reinforcing rib is also provided between the second fixing part and the support lock frame.

[0015] Optionally, the second fixing member includes a first rod and a second rod, the first rod is connected to the second rod, the first rod is connected to the second fixing part, the second rod is connected to the mounting lug, and the outer diameter of the second rod is larger than the outer diameter of the first rod.

[0016] Optionally, it also includes a buffer structure disposed on the inner periphery of the annular lock frame.

[0017] Optionally, the above-mentioned buffer structure includes multiple buffer members, which are circumferentially evenly distributed on the inner circumference of the above-mentioned annular lock frame.

[0018] Optionally, two buffer structures are provided, and the two buffer structures are spaced apart along the axial direction of the annular lock frame on the inner circumference of the annular lock frame.

[0019] The beneficial effects of this utility model are:

[0020] This invention provides a gear ring fixing and separation device for wind turbine gearboxes. During tower-based maintenance of the wind turbine gearbox, a ring-shaped locking frame is fitted onto the outer circumference of the gear ring, and the fixing mechanism on the ring-shaped locking frame is fixedly connected to the first gearbox body. The ring-shaped locking frame is then locked to the outer circumference of the gear ring, thus connecting the first gearbox body and the gear ring. Therefore, during opening, the gear ring can be fixedly connected to the first gearbox body and completely separated from the second gearbox body, reducing uncertainties during maintenance and improving the safety and stability of the maintenance process. Furthermore, by disassembling the ring-shaped locking frame and fixing components into multiple corresponding structural assemblies, the weight of individual parts is reduced, facilitating lifting and transportation, and also reducing storage space required for parts, making storage easier. Attached Figure Description

[0021] Figure 1 This is an isometric drawing of a gear ring plane separation device for wind turbine gearbox provided in a specific embodiment of this utility model;

[0022] Figure 2 This is an isometric view of the gear ring positioning and separation device for wind turbine gearbox, provided by a specific embodiment of this utility model, installed in a wind turbine gearbox.

[0023] In the picture:

[0024] 1. First housing; 101. Mounting section; 102. Mounting lug; 2. Gear ring; 3. Second housing;

[0025] 10. Ring-shaped lock frame; 11. Support lock frame; 111. Weight reduction hole; 12. First fastener; 13. Buffer pad;

[0026] 21. Fixing assembly; 211. First fixing part; 212. First fixing member; 2121. First screw; 2122. First nut; 213. Second fixing part; 214. Second fixing member; 2141. Second screw; 21411. First rod; 21412. Second rod; 21413. Limiting part; 2142. Second nut; 215. Reinforcing rib;

[0027] 30. Buffer structure; 31. Buffer component. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The following reference Figure 1 and Figure 2 This invention introduces a gear ring positioning and separation device for wind turbine gearboxes.

[0033] This embodiment provides a gear ring separation device for wind turbine gearboxes, used to completely separate one of the front and middle housings of the wind turbine gearbox from the gear ring 2 during tower-based maintenance of the wind turbine gearbox.

[0034] Please refer to Figure 1 and Figure 2 The wind turbine gearbox comprises a first housing 1, a gear ring 2, and a second housing 3 connected in sequence. It should be noted that either the first housing 1 or the second housing 3 is the front housing, and the other is the middle housing. In this embodiment, the first housing 1 is the front housing, and the second housing 3 is the middle housing.

[0035] Specifically, the gear ring fixing and separation device for wind turbine gearbox includes an annular locking frame 10 and a fixing mechanism. The annular locking frame 10 is sleeved on the outer periphery of the gear ring 2 and can lock and connect the outer periphery of the gear ring 2. The fixing mechanism is provided on the annular locking frame 10 and can be fixedly connected to the first housing 1.

[0036] More specifically, the annular locking frame 10 includes multiple supporting locking frames 11, which are connected sequentially along the circumferential direction. This arrangement divides the annular locking frame 10 into multiple parts, reducing the weight of individual components, facilitating lifting and transportation, and also reducing storage space for the parts, making them easier to store. Furthermore, the fixing mechanism includes multiple fixing components 21, which are correspondingly arranged on the multiple supporting locking frames 11 and can be fixedly connected to the first housing 1. The one-to-one correspondence between the fixing mechanism and the supporting locking frames 11 allows the gear ring fixing and separation device for wind turbine gearboxes to be divided into multiple structural reassemblies, and each supporting locking frame 11 is provided with one fixing component 21, ensuring uniform stress distribution on each supporting locking frame 11.

[0037] The gear ring fixing and separation device for wind turbine gearboxes in this embodiment, when performing tower-based maintenance on the wind turbine gearbox, involves fitting an annular locking frame 10 around the outer circumference of the gear ring 2 and fixing the fixing mechanism on the annular locking frame 10 to the first housing 1. Then, the annular locking frame 10 is locked to the outer circumference of the gear ring 2, thus achieving the connection between the first housing 1 and the gear ring 2. Therefore, during opening, the gear ring 2 can be fixedly connected to the first housing 1 and completely separated from the second housing 3, reducing uncertainties during maintenance and improving the safety and stability of the maintenance process. Furthermore, by disassembling the annular locking frame 10 and the fixing assembly 21 into multiple structural assemblies in a one-to-one correspondence, the weight of individual parts is reduced, facilitating lifting and transportation, and also reducing storage space for parts, making storage easier.

[0038] For example, in this embodiment, there are four support lock frames 11 and four sets of corresponding fixing components 21, which can reduce the weight of a single component and facilitate installation.

[0039] Specifically, the support lock frame 11 includes an arc-shaped portion and two connecting flanges. Multiple support lock frames 11 are connected to each other, so that the arc-shaped portion encloses and forms an annular lock frame 10, thereby fixing the gear ring 2. The connecting flanges are located at both ends of the arc-shaped portion and are used to connect with other support lock frames 11.

[0040] Optionally, the support lock frame 11 is provided with weight reduction holes 111 to reduce the weight of the support lock frame 11 and facilitate its lifting and transportation.

[0041] More specifically, two adjacent support lock frames 11 are fixedly connected by a number of first fasteners 12, thus achieving a fixed connection between them. Optionally, a buffer pad 13 is provided between two adjacent support lock frames 11 to adjust the degree of locking of the annular lock frame 10 to the outer circumference of the gear ring 2. Since the buffer pad 13 has a certain amount of compression, by adjusting the tightening degree of the first fasteners 12, the inner diameter of the annular lock frame 10 can be finely adjusted, thereby adjusting the degree of locking of the annular lock frame 10 to the outer circumference of the gear ring 2.

[0042] Specifically, the first fastener 12 includes a fastening bolt, a fastening nut, and a fastening washer. The fastening bolt passes through the connecting flanges of the two support lock frames 11 and is threadedly connected to the fastening nut, thereby fixing the two adjacent support lock frames 11 together. The fastening washer is placed between the connecting flange and the fastening bolt and / or between the connecting flange and the fastening nut for limiting support.

[0043] Furthermore, the fixing component 21 includes a first fixing part 211 and a first fixing member 212. The first fixing member 212 is disposed opposite to the mounting part 101 of the first housing 1. The first fixing member 212 is used to lock the first fixing part 211 and the mounting part 101 together, thereby realizing the fixed connection between the annular lock frame 10 and the first housing 1.

[0044] Specifically, the first fixing part 211 is disposed on the outer periphery of the annular lock frame 10, and two first fixing parts 211 are spaced apart along the axial direction of the annular lock frame 10, so as to limit and guide the first fixing member 212.

[0045] Specifically, the first fixing member 212 includes a first screw 2121 and a first nut 2122. One end of the first screw 2121 passes through the first fixing part 211 and is threadedly connected to the mounting part 101. The first nut 2122 is threadedly connected to the other end of the first screw 2121 to achieve the fixing function of the first fixing member 212. Of course, in other embodiments, the first fixing member 212 may also be a bolt or other fastening structure, which is not specifically limited here.

[0046] Furthermore, the fixing assembly 21 also includes a second fixing part 213 and a second fixing member 214. The second fixing part 213 is provided in a one-to-one correspondence with the mounting lugs 102 of the first housing 1, and the second fixing member 214 is used to lock the second fixing part 213 and the mounting lugs 102 together, further improving the fixation between the annular locking frame 10 and the first housing 1. The arrangement of the two fixing structures increases the height of the gear ring positioning and separation device used for wind turbine gearboxes, thereby improving the reliability of the fixation between the gear ring 2 and the first housing 1.

[0047] Specifically, the second fixing part 213 is provided on the outer periphery of the annular lock frame 10 to be connected to the corresponding mounting lug 102.

[0048] Specifically, the second fixing member 214 includes a second screw 2141 and a second nut 2142. One end of the first screw 2121 is limited and connected to the second fixing part 213, and the other end passes through the second fixing part 213 and the mounting lug 102 and is threadedly connected to the second nut 2142 to achieve the fixing function of the second fixing member 214. Of course, in other embodiments, the second fixing member 214 may also be a bolt or other fastening structure, which is not specifically limited here.

[0049] Since the mounting lug 102 is the lifting part of the first housing 1, its lifting hole is relatively large. To improve the fixing effect of the second fixing member 214, optionally, the second screw 2141 in the second fixing member 214 includes a first rod 21411 and a second rod 21412. The first rod 21411 is connected to the second rod 21412. The first rod 21411 is connected to the second fixing part 213, and the second rod 21412 is connected to the mounting lug 102. The outer diameter of the second rod 21412 is larger than the outer diameter of the first rod 21411. This satisfies the matching with the lifting hole and improves the connection stability.

[0050] Optionally, the second screw 2141 further includes a limiting part 21413 for limiting and connecting one end of the second screw 2141 to the second fixing part 213.

[0051] Furthermore, a reinforcing rib 215 is provided between the second fixing part 213 and the support lock frame 11 to improve the support strength of the second fixing part 213, thereby improving the deformation resistance of the gear ring fixing surface separation device used in wind turbine gearboxes.

[0052] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the gear ring 2 fixing surface separation device for wind turbine gearbox further includes a buffer structure 30. The buffer structure 30 is disposed on the inner circumference of the annular locking frame 10. The buffer structure 30 not only protects the surface of the gear ring 2, but also increases the friction between the gear ring 2 and the gear ring 2 fixing surface separation device of the wind turbine gearbox, so that the annular locking frame 10 is better locked on the teeth, thereby improving the connection strength and reliability between the gear ring 2 fixing surface separation device and the gear ring 2 of the wind turbine gearbox.

[0053] Specifically, the buffer structure 30 includes multiple buffer elements 31, which are evenly distributed around the inner circumference of the annular lock frame 10. Specifically, the buffer elements 31 are arranged in a one-to-one correspondence with the support lock frame 11, which facilitates the installation and storage of the buffer structure 30.

[0054] Optionally, two buffer structures 30 are provided, and the two buffer structures 30 are spaced apart along the axial direction of the annular locking frame 10 on the inner circumference of the annular locking frame 10. This arrangement not only increases the contact area between the buffer structure 30 and the gear ring 2, increasing the friction and thus better clamping the gear ring 2, but also simplifies the size of individual components, reduces weight and manufacturing costs.

[0055] Specifically, the buffer 31 and the support lock frame 11 are fixedly connected by screws, making the connection between the two more stable.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Ring gear facing separation device for a wind turbine gearbox, characterized in that The wind power gear box comprises a first box body (1), a gear ring (2) and a second box body (3) connected in sequence, and the gear ring surface separation device for the wind power gear box comprises: An annular locking frame (10) is sleeved on the outer periphery of the gear ring (2) and can be locked and connected with the outer periphery of the gear ring (2); the annular locking frame (10) comprises a plurality of supporting locking frames (11) connected in sequence in the circumferential direction; A fixing mechanism comprises a plurality of fixing components (21) arranged one by one on the plurality of supporting locking frames (11), and the fixing component (21) can be fixedly connected with the first box body (1).

2. The ring gear face separation device for a wind turbine gearbox of claim 1, wherein, The adjacent two supporting locking frames (11) are fixedly connected through a plurality of first fasteners (12).

3. The ring gear facing separation device for a wind turbine gearbox of claim 2, wherein, A buffer pad (13) is arranged between the adjacent two supporting locking frames (11) to adjust the locking degree of the annular locking frame (10) on the outer periphery of the gear ring (2).

4. The ring gear facing separation device for a wind turbine gearbox of claim 1, wherein, The fixing component (21) comprises a first fixing part (211) and a first fixing part (212), and the first fixing part (212) is arranged opposite to the mounting part (101) of the first box body (1) to lock and connect the first fixing part (211) and the mounting part (101).

5. The ring gear facing separation device for a wind turbine gearbox of claim 1, wherein, The fixing component (21) further comprises a second fixing part (213) and a second fixing part (214), and the second fixing part (213) is arranged one by one corresponding to the mounting lug (102) of the first box body (1) to lock and connect the second fixing part (213) and the mounting lug (102).

6. The ring gear facing separation device for a wind power gearbox according to claim 5, characterized in that, The second fixing part (213) and the supporting locking frame (11) are further provided with a reinforcing rib (215).

7. The ring gear facing separation device for a wind power gearbox according to claim 5, characterized in that, The second fixing part (214) comprises a first rod (21411) and a second rod (21412), the first rod (21411) is connected to the second rod (21412), the first rod (21411) is connected to the second fixing part (213), the second rod (21412) is connected to the mounting lug (102), and the outer diameter of the second rod (21412) is greater than that of the first rod (21411).

8. The ring gear facing separation device for a wind power gearbox according to any one of claims 1-7, characterized in that, Further comprising a buffer structure (30) arranged on the inner periphery of the annular locking frame (10).

9. The ring gear facing separation device for a wind power gearbox according to claim 8, characterized in that The buffer structure (30) comprises a plurality of buffer parts (31) arranged uniformly on the inner periphery of the annular locking frame (10) in the circumferential direction.

10. The ring gear facing separation device for a wind turbine gearbox of claim 9, wherein, The buffer structure (30) is provided with two, and the two buffer structures (30) are arranged on the inner periphery of the annular locking frame (10) in the axial direction of the annular locking frame (10).

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