Automatic locking device for hub of wind turbine generator

Abstract

The utility model discloses a wind turbine generator hub automatic locking device, a main body assembly comprises a shell, a supporting seat, a driving piece, a guide disc, a guide piece and a friction plate, the supporting seat is fixed on the inner wall of the shell, the driving piece is arranged on one side of the supporting seat, the guide disc is rotatably connected to one side of the supporting seat, and the friction plate is arranged on the driving piece. The guide piece is arranged in the guide disc, and the friction plate is arranged on one side of the guide piece. The wheel hub has the advantages that the driving piece is arranged to drive the guide disc to rotate, the guide disc drives the friction plate to move to the needed distance through the guide piece, the friction plate is attached to the transmission rod, and therefore the effect of locking and adjusting the wheel hub body is achieved; due to the special shape of the ratchet tooth groove, the pawl can only move in one direction, and therefore the effect of locking the hub body in one direction is achieved.

Description

An automatic hub locking device for wind turbines Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to an automatic locking device for wind turbine hubs. Background Technology

[0002] The wind turbine hub is a crucial component connecting the blades and the main shaft, acting as the "joint" of the entire wind turbine. It is typically made of high-strength, fatigue-resistant cast or forged steel to withstand the enormous loads and complex stresses transmitted by the blades. The hub generally has a polyhedral structure with multiple mounting holes for precisely fixing the blades, ensuring the accuracy of the blade installation angle and position. During operation, the hub not only rotates at high speed with the blades but also copes with the impacts and vibrations caused by changes in wind speed and direction. Its reliability and stability directly affect whether the wind turbine can safely and efficiently convert wind energy into electrical energy. The wind turbine hub needs automatic locking because, under specific conditions such as maintenance and repair, it is necessary to keep the blades in a fixed position to avoid... To prevent the hub from rotating with the wind, the automatic locking device can quickly and accurately lock the hub, ensuring the safety of personnel and facilitating various operations, ensuring smooth and efficient operation. Existing wind turbine hub devices lack a mechanical ratchet self-locking function. When the wind turbine stops or under specific operating conditions, the hub cannot automatically lock based on the unidirectional movement characteristics of the ratchet, making it difficult to maintain a stable fixed position. The blades 210 may rotate unexpectedly, posing a safety hazard. At the same time, it also lacks an adjustable friction locking function, and cannot flexibly adjust the friction force according to different wind speeds, loads, and other actual operating conditions to achieve precise locking. This may lead to unreliable hub locking in complex environments, affecting the normal operation and power generation efficiency of the wind turbine, and increasing equipment maintenance costs. Summary of the Invention

[0003] The purpose of this section is to provide an overview of some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing automatic hub locking devices for wind turbines, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is that the device lacks a mechanical ratchet self-locking function during use. When the wind turbine is stopped or under specific operating conditions, the hub cannot automatically lock by relying on the unidirectional motion characteristics of the ratchet, making it difficult to maintain a stable fixed position. The blades may rotate unexpectedly, posing a safety hazard. At the same time, it also lacks an adjustable friction locking function, and cannot flexibly adjust the friction force to achieve precise locking according to different wind speeds, loads and other actual operating conditions. This may lead to unreliable hub locking in complex environments, affecting the normal operation and power generation efficiency of the wind turbine, and increasing equipment maintenance costs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automatic locking device for wind turbine hubs, comprising a main assembly, the main assembly including a shell, a support base, a driving component, a guide disk, a guide member, and a friction plate, the support base being fixed to the inner wall of the shell, the driving component being disposed on one side of the support base, the guide disk being rotatably connected to one side of the support base, the guide member being disposed inside the guide disk, the friction plate being disposed on one side of the guide member; and a self-locking assembly, the self-locking assembly being disposed inside the shell, the self-locking assembly including a blade, a hub body, a transmission rod, a self-locking component, a collecting component, and a fixing component, the blade being disposed on one side of the shell, the hub body being fixed to one end of the blade, the transmission rod being fixed to the inner wall of the hub body, the self-locking component being disposed inside the shell, the collecting component being disposed at one end of the transmission rod, and the fixing component being disposed inside the shell.

[0007] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the driving component includes a first motor, a threaded rod, and a positioning plate. The positioning plate is rotatably connected to one side of the support base, the first motor is fixed to one side of the positioning plate, and the threaded rod is fixed to the output end of the first motor.

[0008] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the driving component further includes a connecting block and a connecting plate. The connecting block is threaded to the outside of the threaded rod, and the connecting plate is rotatably connected to the inner wall of the connecting block. One side of the connecting plate is fixed to one side of the guide plate.

[0009] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the guide component includes a guide rod and a guide sleeve. The guide rod is rotatably connected to the inner wall of the guide disc, and the guide sleeve is fixed to one end of the guide rod.

[0010] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the guide component further includes a guide plate and a support rod. The guide plate is slidably connected to the inner wall of the guide sleeve, and one side of the guide plate is fixed to one side of the friction plate. The support rod is rotatably connected to the inner wall of the guide plate, and one end of the support rod is fixed to one side of the support seat.

[0011] As a preferred embodiment of the automatic locking device for wind turbine hubs of this utility model, the self-locking component includes a fixed base and a fixed rod, the fixed base is fixed to the inner wall of the outer shell, and the fixed rod is fixed to one side of the fixed base.

[0012] As a preferred embodiment of the automatic locking device for wind turbine hubs of this utility model, the self-locking component further includes a pawl and a ratchet. The pawl is rotatably connected to the outside of the fixed rod, and the ratchet is fixed to the outside of the transmission rod, with the outside of the ratchet engaging with the outside of the pawl.

[0013] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the collecting component includes a first bevel gear and a second bevel gear, the first bevel gear is fixed to one end of the transmission rod, and the second bevel gear is meshed with the outside of the first bevel gear.

[0014] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the collecting component further includes a connecting rod and a second motor. The connecting rod is fixed to the bottom of the second bevel gear, the second motor is fixed to the bottom of the housing, and the output end of the second motor is fixed to one end of the connecting rod.

[0015] As a preferred embodiment of the automatic hub locking device for wind turbines of this utility model, the fixing component includes a fixing plate and a support plate. The fixing plate is fixed to the inner wall of the outer shell, and the inner wall of the fixing plate is rotatably connected to the outer side of the transmission rod. The support plate is fixed to the inner wall of the outer shell, and the inner wall of the support plate is rotatably connected to the outer side of the connecting rod.

[0016] The beneficial effects of this utility model are as follows: by setting a driving component to drive the guide plate to rotate, the guide plate drives the friction plate to move to the required distance through the guide component, so that the friction plate and the transmission rod are in contact, thereby achieving the effect of locking and adjusting the hub body. Through the design of the self-locking component, the transmission rod can drive the ratchet, so that the pawl is embedded in the ratchet tooth groove. Due to the special shape of the ratchet tooth groove, the pawl can only move in one direction, thereby achieving the effect of locking the hub body in one direction, avoiding the problem of difficulty in maintaining a stable fixed position and the possibility of the blade rotating unexpectedly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 shows the overall structure of the automatic hub locking device for wind turbines.

[0019] Figure 2 is a schematic diagram of the outer shell of this utility model.

[0020] Figure 3 is a schematic diagram of the drive component in this utility model.

[0021] Figure 4 is a structural schematic diagram of the enlarged view at point A in Figure 3.

[0022] Figure 5 is a schematic diagram of the self-locking structure in this utility model.

[0023] Figure 6 is a schematic diagram of the structure of the collecting component in this utility model.

[0024] The following numbers are labeled in the diagram: 100, Main component; 110, Outer shell; 120, Support base; 130, Driving component; 131, First motor; 132, Threaded rod; 133, Connecting block; 134, Connecting plate; 135, Positioning plate; 140, Guide disc; 150, Guide component; 151, Guide rod; 152, Guide sleeve; 153, Guide plate; 154, Support rod; 160, Friction plate; 200, Self-locking component; 210, Blade; 220, Hub body; 230, Transmission rod; 240, Self-locking component; 241, Fixed base; 242, Fixed rod; 243, Pawl; 244, Ratchet; 250, Collector; 251, First bevel gear; 252, Second bevel gear; 253, Connecting rod; 254, Second motor; 260, Fixing component; 261, Fixing plate; 262, Support plate. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Embodiment 1

[0028] Referring to Figures 1 to 6, this is the first embodiment of the present invention. This embodiment provides an automatic locking device for a wind turbine hub, including a main body component 100 and a self-locking component 200. By setting the main body component 100, the hub body 220 can be easily locked and adjusted. By setting the self-locking component 200, the hub body 220 can be easily locked in one direction.

[0029] The main component 100 includes a housing 110, a support base 120, a drive component 130, a guide disk 140, a guide component 150, and a friction plate 160. The support base 120 is fixed to the inner wall of the housing 110. The drive component 130 is disposed on one side of the support base 120. The guide disk 140 is rotatably connected to one side of the support base 120. The guide component 150 is disposed inside the guide disk 140. The friction plate 160 is disposed on one side of the guide component 150.

[0030] The design of the outer casing 110 can effectively protect the internal components. The outer casing 110 can fix the support base 120. The drive component 130 drives the guide plate 140 to rotate, and the guide plate 140 drives the friction plate 160 to move to the required distance through the guide component 150, so that the friction plate 160 fits with the transmission rod 230. This facilitates the subsequent adjustment of the wheel hub lock and avoids the problem of not being able to flexibly adjust the friction force to achieve precise locking according to different wind speeds, loads and other actual operating conditions.

[0031] The self-locking assembly 200 is disposed inside the housing 110 and includes a blade 210, a hub body 220, a transmission rod 230, a self-locking component 240, a collecting component 250, and a fixing component 260. The blade 210 is disposed on one side of the housing 110, the hub body 220 is fixed to one end of the blade 210, the transmission rod 230 is fixed to the inner wall of the hub body 220, the self-locking component 240 is disposed inside the housing 110, the collecting component 250 is disposed at one end of the transmission rod 230, and the fixing component 260 is disposed inside the housing 110.

[0032] The blade 210 generates lift and rotates under wind power. The hub body 220 connects the blade 210 to the drive rod 230, transmitting the rotational power of the blade 210 to the drive rod 230. The drive rod 230 then transmits the power to the collector 250, thus converting wind energy into electrical energy. When the drive rod 230 rotates, the self-locking component 240 allows for easy one-way locking of the hub body 220, preventing the blade 210 from accidentally rotating due to difficulty in maintaining a stable position. Example 2

[0033] Referring to Figures 2, 3, and 4, this is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] Specifically, the driving component 130 includes a first motor 131, a threaded rod 132, and a positioning plate 135. The positioning plate 135 is rotatably connected to one side of the support base 120, the first motor 131 is fixed to one side of the positioning plate 135, and the threaded rod 132 is fixed to the output end of the first motor 131.

[0035] The first motor 131 can be fixed by the positioning plate 135. When the first motor 131 is turned on, the first motor 131 drives the threaded rod 132 to rotate. At the same time, the threaded rod 132 drives the positioning plate 135 to rotate along one side of the support base 120, which facilitates the subsequent locking of the transmission rod 230 and improves the stability of the device.

[0036] Specifically, the drive component 130 also includes a connecting block 133 and a connecting plate 134. The connecting block 133 is threaded to the outside of the threaded rod 132, and the connecting plate 134 is rotatably connected to the inner wall of the connecting block 133. One side of the connecting plate 134 is fixed to one side of the guide plate 140.

[0037] The rotation of the threaded rod 132 drives the connecting block 133 to move, and the movement of the connecting block 133 drives the connecting plate 134 to rotate. At the same time, the connecting plate 134 drives the guide plate 140 to rotate along the inner wall of the support base 120, which facilitates the subsequent locking of the transmission rod 230 and improves the stability of the device.

[0038] Specifically, the guide member 150 includes a guide rod 151 and a guide sleeve 152. The guide rod 151 is rotatably connected to the inner wall of the guide disc 140, and the guide sleeve 152 is fixed to one end of the guide rod 151.

[0039] The guide rod 151 moves by rotating the guide disc 140, and the guide sleeve 152 moves by the guide rod 151, which facilitates the subsequent movement of the guide plate 153 by the guide sleeve 152, thus improving the stability of the device.

[0040] Specifically, the guide member 150 also includes a guide plate 153 and a support rod 154. The guide plate 153 is slidably connected to the inner wall of the guide sleeve 152, and one side of the guide plate 153 is fixed to one side of the friction plate 160. The support rod 154 is rotatably connected to the inner wall of the guide plate 153, and one end of the support rod 154 is fixed to one side of the support seat 120.

[0041] Guide rod 151 drives guide plate 153 to slide along the inner wall of guide sleeve 152, while guide plate 153 rotates along one side of support base 120 via support rod 154. The rotation of guide plate 153 drives friction plate 160 to move, so that friction plate 160 and transmission rod 230 are in contact, thereby achieving the effect of locking and adjusting hub body 220. This avoids the problem of not being able to flexibly adjust friction force to achieve precise locking according to different wind speeds, loads and other actual operating conditions. Example 3

[0042] Referring to Figures 5 and 6, this is the third embodiment of the present invention, which is based on the first two embodiments.

[0043] Specifically, the self-locking component 240 includes a fixing seat 241 and a fixing rod 242. The fixing seat 241 is fixed to the inner wall of the outer casing 110, and the fixing rod 242 is fixed to one side of the fixing seat 241.

[0044] The outer casing 110 can fix the fixing seat 241, and the fixing seat 241 can fix the fixing rod 242, which facilitates the subsequent rotation of the pawl 243 along the outside of the fixing rod 242 and improves the stability during self-locking.

[0045] Specifically, the self-locking component 240 also includes a pawl 243 and a ratchet 244. The pawl 243 is rotatably connected to the outside of the fixed rod 242, and the ratchet 244 is fixed to the outside of the transmission rod 230. The outside of the ratchet 244 is engaged with the outside of the pawl 243.

[0046] The transmission rod 230 drives the ratchet 244 to rotate, causing the pawl 243 to engage in the tooth groove of the ratchet 244. Due to the special shape of the tooth groove of the ratchet 244, the pawl 243 can only move in one direction, thereby achieving the effect of unidirectional locking of the hub body 220, avoiding the problem of difficulty in maintaining a stable fixed position and the possibility of the blade 210 rotating unexpectedly.

[0047] Specifically, the collecting component 250 includes a first bevel gear 251 and a second bevel gear 252. The first bevel gear 251 is fixed to one end of the transmission rod 230, and the second bevel gear 252 is meshed with the outside of the first bevel gear 251.

[0048] The blade 210 generates lift and rotates under the action of wind power. The rotational power of the blade 210 is transmitted to the transmission rod 230 through the hub body 220 to rotate. The transmission rod 230 drives the second bevel gear 252 to rotate through the first bevel gear 251, which facilitates the subsequent conversion of wind energy into electrical energy and improves the flexibility of the device.

[0049] Specifically, the collecting component 250 also includes a connecting rod 253 and a second motor 254. The connecting rod 253 is fixed to the bottom of the second bevel gear 252, and the second motor 254 is fixed to the bottom of the housing 110. The output end of the second motor 254 is fixed to one end of the connecting rod 253.

[0050] The second bevel gear 252 drives the connecting rod 253 to rotate, and the connecting rod 253 transmits power to the second motor 254, thereby converting wind energy into electrical energy. The second motor 254 is a generator in the prior art. The generator is based on electromagnetic induction. Wind power drives the blades 210 and the hub body 220 to rotate, which in turn drives the generator rotor to rotate. The rotor magnetic field rotates accordingly. At this time, the stator coil cuts the rotating magnetic field to generate an induced electromotive force, and then outputs alternating current, realizing the process of converting wind energy into electrical energy.

[0051] Specifically, the fastener 260 includes a fixing plate 261 and a support plate 262. The fixing plate 261 is fixed to the inner wall of the housing 110, and the inner wall of the fixing plate 261 is rotatably connected to the outer side of the transmission rod 230. The support plate 262 is fixed to the inner wall of the housing 110, and the inner wall of the support plate 262 is rotatably connected to the outer side of the connecting rod 253.

[0052] The outer casing 110 fixes the transmission rod 230 with the fixing plate 261, and the outer casing 110 fixes the connecting rod 253 with the support plate 262, which facilitates the stable rotation of the subsequent transmission rod 230 and connecting rod 253 and improves the stability when collecting electrical energy.

[0053] In use, when the hub body 220 needs maintenance, the first motor 131 is turned on, driving the threaded rod 132 to rotate. This rotation moves the connecting block 133, which in turn moves the connecting plate 134. Simultaneously, the connecting plate 134 causes the guide disc 140 to rotate within the support base 120. The rotation of the guide disc 140 moves the guide rod 151, which in turn moves the guide plate 153 along the inner wall of the guide sleeve 152. Simultaneously, the guide plate 153 rotates along one side of the support base 120 via the support rod 154. This rotation of the guide plate 153 moves the friction plate 160, causing it to engage with the transmission rod 230. This achieves the locking and adjustment of the hub body 220, preventing inability to adjust to different wind speeds, loads, and other actual operating conditions. To address the issue of precise locking through adjustable friction, the blade 210 generates lift and rotates under wind power. The rotational power of the blade 210 is transmitted to the transmission rod 230 via the hub body 220, causing the transmission rod 230 to rotate via the first bevel gear 251, which in turn drives the second bevel gear 252. The second bevel gear 252 then drives the connecting rod 253, which in turn transmits power to the second motor 254, thus converting wind energy into electrical energy. As the blade 210 rotates, the transmission rod 230 drives the ratchet 244 to rotate, causing the pawl 243 to engage with the tooth groove of the ratchet 244. Due to the special shape of the ratchet 244's tooth groove, the pawl 243 can only move in one direction, achieving a one-way locking effect on the hub body 220. This avoids the problem of the blade 210 potentially rotating unexpectedly due to difficulty in maintaining a stable fixed position.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic hub locking device for wind turbine generators, characterized in that: The system includes a main body assembly (100), which includes a housing (110), a support base (120), a drive member (130), a guide disk (140), a guide member (150), and a friction plate (160). The support base (120) is fixed to the inner wall of the housing (110). The drive member (130) is disposed on one side of the support base (120). The guide disk (140) is rotatably connected to one side of the support base (120). The guide member (150) is disposed inside the guide disk (140). The friction plate (160) is disposed on one side of the guide member (150). The system also includes a self-locking assembly (200). Inside the outer casing (110), the self-locking assembly (200) includes a blade (210), a hub body (220), a transmission rod (230), a self-locking component (240), a collecting component (250), and a fixing component (260). The blade (210) is disposed on one side of the outer casing (110), the hub body (220) is fixed to one end of the blade (210), the transmission rod (230) is fixed to the inner wall of the hub body (220), the self-locking component (240) is disposed inside the outer casing (110), the collecting component (250) is disposed at one end of the transmission rod (230), and the fixing component (260) is disposed inside the outer casing (110).

2. The automatic hub locking device for wind turbines as described in claim 1, characterized in that: The driving component (130) includes a first motor (131), a threaded rod (132), and a positioning plate (135). The positioning plate (135) is rotatably connected to one side of the support base (120). The first motor (131) is fixed to one side of the positioning plate (135), and the threaded rod (132) is fixed to the output end of the first motor (131).

3. The automatic hub locking device for wind turbines as described in claim 2, characterized in that: The drive unit (130) also includes a connecting block (133) and a connecting plate (134). The connecting block (133) is threaded to the outside of the threaded rod (132), and the connecting plate (134) is rotatably connected to the inner wall of the connecting block (133). One side of the connecting plate (134) is fixed to one side of the guide plate (140).

4. The automatic hub locking device for wind turbines as described in claim 1, characterized in that: The guide member (150) includes a guide rod (151) and a guide sleeve (152). The guide rod (151) is rotatably connected to the inner wall of the guide disc (140), and the guide sleeve (152) is fixed to one end of the guide rod (151).

5. The automatic hub locking device for wind turbines as described in claim 4, characterized in that: The guide member (150) further includes a guide plate (153) and a support rod (154). The guide plate (153) is slidably connected to the inner wall of the guide sleeve (152), and one side of the guide plate (153) is fixed to one side of the friction plate (160). The support rod (154) is rotatably connected to the inner wall of the guide plate (153), and one end of the support rod (154) is fixed to one side of the support seat (120).

6. The automatic hub locking device for wind turbines as described in claim 1, characterized in that: The self-locking component (240) includes a fixing seat (241) and a fixing rod (242). The fixing seat (241) is fixed to the inner wall of the outer shell (110), and the fixing rod (242) is fixed to one side of the fixing seat (241).

7. The automatic hub locking device for wind turbines as described in claim 6, characterized in that: The self-locking component (240) also includes a pawl (243) and a ratchet (244). The pawl (243) is rotatably connected to the outside of the fixed rod (242), and the ratchet (244) is fixed to the outside of the transmission rod (230). The outside of the ratchet (244) is engaged with the outside of the pawl (243).

8. The automatic hub locking device for wind turbines as described in claim 1, characterized in that: The collecting component (250) includes a first bevel gear (251) and a second bevel gear (252). The first bevel gear (251) is fixed to one end of the transmission rod (230), and the second bevel gear (252) is meshed with the outside of the first bevel gear (251).

9. The automatic hub locking device for wind turbines as described in claim 8, characterized in that: The collecting component (250) also includes a connecting rod (253) and a second motor (254). The connecting rod (253) is fixed to the bottom of the second bevel gear (252), and the second motor (254) is fixed to the bottom of the housing (110). The output end of the second motor (254) is fixed to one end of the connecting rod (253).

10. The automatic hub locking device for wind turbines as described in claim 9, characterized in that: The fastener (260) includes a fixing plate (261) and a support plate (262). The fixing plate (261) is fixed to the inner wall of the outer shell (110), and the inner wall of the fixing plate (261) is rotatably connected to the outer side of the transmission rod (230). The support plate (262) is fixed to the inner wall of the outer shell (110), and the inner wall of the support plate (262) is rotatably connected to the outer side of the connecting rod (253).

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