A fan hub device with a locking structure and a method of using the same

Abstract

The application relates to a fan hub device with a locking structure and a use method thereof. The device comprises a hub body, a main shaft arranged on one side of the hub body, and a locking assembly arranged in the inner cavity of the hub body. The locking assembly comprises a rotating rod arranged on the inner side of the hub body, a ratchet fixedly connected to the surface of the rotating rod, a clamping plate clampingly connected to the inner side of the ratchet, and a spring connected to the top of the clamping plate and the hub body. One end of the rotating rod is fixedly connected to a rotating plate, the other side of the rotating plate is rotationally connected to the hub body, a notch is arranged in the inner cavity of the rotating plate, a locking block is slidingly connected to the inner cavity of the notch, and the other side of the locking block is clampingly connected to the main shaft. One side of the locking block is inclined. Compared with the prior art, the application can stably lock under the high-temperature and high-vibration working condition of the boiler auxiliary fan, improves the operation reliability and service life of the device, and reduces the operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of wind turbine hub technology, and in particular to a wind turbine hub device with a locking structure and its usage method. Background Technology

[0002] The fan hub is the core transmission and load-bearing component of the boiler auxiliary fan. It is the key hub connecting the fan main shaft and the fan impeller. Its core function is to receive the rotational mechanical energy transmitted by the main shaft, driving the impeller to rotate at high speed to achieve core processes such as boiler ventilation, induced draft, and pulverized coal conveying. At the same time, it bears the alternating bending moment, impact load, and complex torque generated by the impeller under high temperature, media erosion, and airflow disturbance, achieving uniform load distribution and stable transmission. During the long-term continuous operation of the boiler, the boiler auxiliary fan is subjected to harsh conditions of high temperature, high vibration, and frequent start-stop. The reliability and locking stability of the connection between the hub and the main shaft directly determine the ventilation efficiency, operational stability, and total life-cycle maintenance cost of the boiler auxiliary fan. It is also a core prerequisite for ensuring the continuous, safe, and efficient operation of the boiler system.

[0003] Currently, the connection between the hub and main shaft of auxiliary boiler fans relies primarily on mounting bushings and conventional bolt sets for positioning and fixation, lacking a dedicated locking structure. During boiler operation, the auxiliary fans are continuously subjected to high-temperature conduction from the furnace, airflow pulsation impact, high-frequency vibration of the entire unit, and sudden load changes caused by frequent start-ups and shutdowns. This makes the connection prone to issues such as bolt preload decay, thread stripping, and loosening. These problems not only lead to decreased transmission accuracy between the hub and main shaft, increased abnormal noise and vibration during fan operation, resulting in unstable boiler ventilation and pulverized coal delivery, affecting boiler combustion efficiency and steam parameters, but also significantly increase the frequency of fan maintenance and repair, raising the probability of boiler shutdown for maintenance. Furthermore, the lack of a dedicated locking and limiting structure makes installation, disassembly, and maintenance operations cumbersome. In severe cases, it can lead to hub and main shaft detachment, fan transmission failure, and even boiler furnace flameout, abnormal pressure, and other safety accidents, failing to meet the long-term, high-reliability operation requirements of boiler auxiliary fans. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, which relies on mounting bushings and conventional bolt groups for limiting and fixing the connection between the hub and the main shaft, and does not have a dedicated locking structure. This invention provides a wind turbine hub device with a locking structure and its usage method.

[0005] The objective of this invention can be achieved through the following technical solutions: A wind turbine hub device with a locking structure includes a hub body, a main shaft on one side of the hub body, and a locking assembly in the inner cavity of the hub body. The locking assembly includes a rotating rod located inside the wheel hub body. A ratchet is fixedly connected to the surface of the rotating rod, and a locking plate is engaged with the inner side of the ratchet. The locking plate is fixedly connected to the wheel hub body. A spring is connected to the top of the locking plate and is connected to the wheel hub body. One end of the rotating rod is fixedly connected to a rotating plate, and the other side of the rotating plate is rotatably connected to the hub body. The inner cavity of the rotating plate has a slot, and a locking block is slidably connected to the inner cavity of the slot. The other side of the locking block is engaged with the main shaft. One side of the locking block is inclined, and during the sliding process, it forms a circumferential compressive force on the main shaft, causing the hub body to move closer to the main shaft until locking is completed.

[0006] Furthermore, the top of the locking block is provided with a monitoring component, which includes an indicator block that is slidably connected to the fixing rod of the main shaft. A tension spring is fixedly connected to the bottom of the indicator block, and the bottom of the tension spring is fixedly connected to the main shaft. A scale groove is opened on the surface of the indicator block, and an indicator mark is provided on the main shaft, which is located on one side of the scale groove. When the calibrated scale on the scale groove aligns with the indicated position on the indicator, it means that the hub body and the main shaft are locked in place.

[0007] Furthermore, a groove is provided on the inner side of the rotating plate, and the inner cavity of the groove is slidably connected to the protrusion corresponding to the hub body, so as to provide a limit for the rotation of the rotating plate and prevent rotational deviation.

[0008] Furthermore, a limiting groove is formed in the inner cavity of the wheel hub body, and the inner cavity of the limiting groove is slidably connected to the locking block to provide sliding space for the locking block.

[0009] Furthermore, a positioning groove is provided on one side of the wheel hub body, and a positioning rod that cooperates with the positioning groove is connected to the main shaft, so as to achieve precise alignment between the wheel hub body and the main shaft after the positioning rod is fully slid into the positioning groove.

[0010] Furthermore, a limiting rod is provided on the inner side of the spring, the top of the limiting rod is fixedly connected to the hub body, the surface of the limiting rod is slidably connected to the clamping plate, and the clamping plate is provided with a groove for the limiting rod to slide.

[0011] Furthermore, the ratchet engages with the pallet in a one-way manner.

[0012] Furthermore, a knob is provided at one end of the rotating rod, and the knob is located on the outside of the wheel hub body.

[0013] Furthermore, the wind turbine hub assembly is used in the auxiliary equipment of a thermal power plant.

[0014] The present invention also provides a method of using a wind turbine hub device with a locking structure as described above, comprising the following steps: Align the main shaft with the wheel hub body for pre-installation positioning; Hold the rotating rod on the outside of the wheel hub body and rotate it clockwise. The ratchet on the surface of the rotating rod rotates with it and engages with the locking plate in one direction. The locking plate slides upward under the force of the ratchet and compresses the spring. The spring forms an elastic restoring force, completing the pre-locking operation of the locking assembly. Continue rotating the lever clockwise, causing the lever to drive a rotating plate fixed at one end to rotate synchronously. The rotating plate rotates within the sliding space provided by the wheel hub body. During the rotation of the rotating plate, the slot of the rotating plate exerts a thrust on the locking block, causing the locking block to slide along the sliding space provided by the inner cavity of the wheel hub body towards the main shaft. The locking block exerts a circumferential compressive force on the main shaft, pushing the wheel hub body closer to the main shaft until mechanical rigid locking is achieved. When the force applied to the rotating rod is released, the locking plate slides downward under the elastic restoring force of the spring and re-engages tightly with the ratchet. The one-way engagement between the ratchet and the locking plate achieves the anti-reverse limit of the rotating rod, locks the position of the rotating plate and the locking block, keeps the locking assembly in a locked state, and achieves self-locking, anti-loosening and anti-reverse. When disassembly and maintenance are required, press the plate upwards to slide it up and compress the spring until the plate is completely disengaged from the ratchet, releasing the limit on the rotating rod. Then rotate the rotating rod counterclockwise, causing the rotating plate to rotate counterclockwise, so that the pushing force of the slot on the locking block disappears, and the locking block resets along the limit groove in the direction away from the main shaft, releasing the clamping pressure on the main shaft and completing the unlocking. Pull the hub body in the opposite direction of the positioning groove to complete the separation and disassembly of the hub body from the main shaft. After disassembly, release the pressure on the clamping plate to allow it to reset under the action of the spring, and check whether each component has returned to its initial normal state.

[0015] Compared with the prior art, the present invention has the following advantages: (1) This invention achieves mechanical rigid locking between the hub body and the main shaft by setting a special locking assembly consisting of a rotating rod, ratchet, locking plate, spring, rotating plate and locking block. This replaces the traditional connection and fixing method that relies on bolt groups. It fundamentally avoids the problem of connection loosening caused by the decrease of bolt preload under high temperature, high vibration and frequent start-stop conditions of boiler auxiliary fan. It effectively ensures the tightness of the fit between the hub and the main shaft and the transmission accuracy. At the same time, through the one-way engagement of the ratchet and the locking plate, combined with the elastic return limit of the spring, the self-locking and anti-loosening function of the locked state is realized. It can continuously withstand the complex working conditions of high temperature thermal stress, airflow impact and whole machine vibration during the operation of boiler auxiliary fan, and stably maintain the locked state, ensuring the operational stability of boiler ventilation and induced draft system.

[0016] (2) This invention features a matching monitoring component on the top of the locking block, enabling real-time visual monitoring of the locking status between the hub and the main shaft. Without disassembling the device, the locking block's position and changes in locking status during operation can be intuitively assessed, significantly reducing the difficulty of detecting the locking status during boiler auxiliary fan maintenance. Maintenance personnel can quickly identify potential loosening of the locking structure by checking the alignment of the scale groove and indicator, allowing for timely maintenance and preventing fan drive failures due to delayed detection of locking failures, which could lead to boiler combustion abnormalities, shutdowns, and other safety accidents, thus improving the overall operational safety of the boiler system.

[0017] (3) This invention abandons the traditional bolt fastening method and adopts a linkage structure of ratchet-card plate one-way self-locking + rotating plate-slot drive inclined locking block. The inclined locking blocks evenly distributed in the circumference form a clamping and squeezing force on the main shaft, and simultaneously eliminate the axial gap between the hub and the main shaft to achieve rigid locking without gap.

[0018] (4) The present invention relies on the one-way engagement of the ratchet and the plate and the spring return force to form a self-locking structure that prevents backing. Once locked, it cannot be loosened in the opposite direction. It can resist the vibration, thermal stress and impact load during the operation of the fan for a long time and prevent the locking from loosening and failing.

[0019] (5) The present invention is equipped with a positioning rod + positioning groove pre-installed guide structure. The external knob operation does not require special tools, and the disassembly and assembly are convenient and the positioning is accurate, reducing the difficulty of assembly and maintenance. Attached Figure Description

[0020] Figure 1 This is a perspective view of a wind turbine hub device with a locking structure provided in an embodiment of the present invention; Figure 2 This is a perspective view of a wind turbine hub device with a locking structure provided in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a perspective view of a monitoring component in a wind turbine hub device with a locking structure provided in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point B; In the diagram: 1. Hub body; 2. Main shaft; 3. Locking assembly; 301. Rotating rod; 302. Ratchet; 303. Clamping plate; 304. Spring; 305. Rotating plate; 306. Groove; 307. Locking block; 4. Monitoring assembly; 401. Indicator block; 402. Tension spring; 403. Scale groove; 404. Indicator mark; 5. Knob; 6. Slide groove; 7. Limit groove; 8. Positioning groove; 9. Positioning rod; 10. Limit rod; 11. Fixing rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0025] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] Example 1 This embodiment provides a wind turbine hub device with a locking structure, including a hub body 1, a main shaft 2 on one side of the hub body 1, and a locking component 3 in the inner cavity of the hub body 1. The locking assembly 3 includes a rotating rod 301 located inside the hub body 1. A ratchet 302 is fixedly connected to the surface of the rotating rod 301. A locking plate 303 is engaged with the inner side of the ratchet 302 and is fixedly connected to the hub body 1. A spring 304 is connected to the top of the locking plate 303 and is connected to the hub body 1. The ratchet 302 and the locking plate 303 engage in a one-way locking mechanism. One end of the rotating rod 301 is fixedly connected to a rotating plate 305. The other side of the rotating plate 305 is rotatably connected to the hub body 1. The inner cavity of the rotating plate 305 is provided with a slot 306. A locking block 307 is slidably connected to the inner cavity of the slot 306. The other side of the locking block 307 is engaged with the main shaft 2. One side of the locking block 307 is inclined. During the sliding process, it forms a circumferential squeezing force on the main shaft 2, causing the hub body 1 to move closer to the main shaft 2 until locking is completed.

[0028] Preferably, the top of the locking block 307 is provided with a monitoring component 4, which includes an indicator block 401. The indicator block 401 is slidably connected to the fixing rod 11 of the main shaft 2. A tension spring 402 is fixedly connected to the bottom of the indicator block 401. The bottom of the tension spring 402 is fixedly connected to the main shaft 2. A scale groove 403 is opened on the surface of the indicator block 401. An indicator mark 404 is provided on the main shaft 2. The indicator mark 404 is located on one side of the scale groove 403. When the calibration scale on the scale groove 403 is aligned with the indicated position on the indicator 404, it means that the hub body 1 and the main shaft 2 are locked in place.

[0029] There are multiple tension springs 402, which are symmetrically distributed on both sides of the bottom of the indicator block. They provide a balanced and stable bidirectional elastic force to the indicator block, ensuring that the indicator block maintains a horizontal and stable posture throughout the entire process of sliding in conjunction with the locking state.

[0030] Preferably, a groove 6 is provided on the inner side of the rotating plate 305, and the inner cavity of the groove 6 is slidably connected to the protrusion provided in the corresponding position of the hub body 1, so as to provide a limit for the rotation of the rotating plate 305 and prevent it from deviating when rotating.

[0031] Preferably, a limiting groove 7 is provided in the inner cavity of the hub body 1. The inner cavity of the limiting groove 7 is slidably connected to the locking block 307, providing sliding space for the locking block 307. The limiting groove can restrict the range of motion and operation mode of the locking block, preventing it from shifting during operation and causing it to be unable to connect with the main shaft.

[0032] Preferably, a positioning groove 8 is provided on one side of the wheel hub body 1, and a positioning rod 9 that cooperates with the positioning groove 8 is connected to the main shaft 2. This is used to achieve precise alignment between the wheel hub body 1 and the main shaft 2 after the positioning rod 9 is fully slid into the positioning groove 8. The cooperation between the positioning groove and the positioning rod can provide guidance and positioning when the wheel hub body and the main shaft are assembled.

[0033] Preferably, a limiting rod 10 is provided on the inner side of the spring 304. The top of the limiting rod 10 is fixedly connected to the hub body 1, and the surface of the limiting rod 10 is slidably connected to the clamping plate 303. The clamping plate 303 is provided with a groove for the limiting rod 10 to slide. The limiting rod not only provides guidance for the clamping plate, but also prevents the spring from shifting during operation.

[0034] Preferably, one end of the rotating rod 301 is provided with a knob 5, which is located on the outside of the wheel hub body 1. The knob provides an external dedicated force application end for locking and unlocking the locking assembly, allowing the locking state to be adjusted without the need for special tools to penetrate into the inner cavity of the wheel hub.

[0035] A fixing rod 11 is provided on the inner side of the tension spring 402. Both ends of the fixing rod 11 are fixedly connected to the main spindle body. The surface of the fixing rod 11 is slidably connected to the indicator block 401. The fixing rod 11 can restrict the movement of the indicator block 401 to prevent the indicator block from jamming with the main spindle during operation, which would prevent the locking block from fully entering the main spindle.

[0036] Specifically: In this embodiment, the wind turbine hub device is used for the wind turbine of the auxiliary equipment of a thermal power plant. There are four locking blocks 307, which can form a uniform circumferential clamping force on the main shaft 2 during the locking action, ensuring that the main shaft 2 and the locking structure are subjected to balanced forces. One side of the locking block is inclined, allowing it to compress the main shaft 2 upon contact, thereby causing the hub body 1 to move closer to the main shaft 2. This effectively eliminates the axial clearance between the hub body 1 and the mating end face of the main shaft 2, preventing impact loads, transmission losses, and abnormal noises caused by axial movement during unit operation. The rotating rod 301 is rotatably connected to the hub body 1 through a bearing, significantly reducing the rotational friction resistance of the rotating rod 301 during locking and unlocking operations.

[0037] Please see Figure 1-5The top of the locking block 307 is equipped with a monitoring component 4, which includes an indicator block 401. Both sides of the indicator block 401 are slidably connected to the main shaft 2. Both sides of the bottom of the indicator block 401 are fixedly connected with tension springs 402, and the bottom of the tension springs 402 is fixedly connected to the main shaft 2. The surface of the indicator block 401 is provided with a scale groove 403, and an indicator mark 404 is provided on one side of the scale groove 403. The bottom of the indicator mark 404 is fixedly connected to the main shaft 2. A knob 5 is provided on one side of the hub body 1, and one side of the knob 5 is fixedly connected to the rotating rod 301. A sliding groove 6 is provided on the inner side of the rotating plate 305, and the inner cavity of the sliding groove 6 is connected to the hub. The main body 1 is slidably connected. A limiting groove 7 is opened in the inner cavity of the hub body 1. The inner cavity of the limiting groove 7 is slidably connected to the locking block 307. A positioning groove 8 is opened on one side of the hub body 1. A positioning rod 9 is slidably connected in the inner cavity of the positioning groove 8. The other end of the positioning rod 9 is fixedly connected to the main shaft 2. A limiting rod 10 is provided inside the spring 304. The top of the limiting rod 10 is fixedly connected to the hub body 1. The surface of the limiting rod 10 is slidably connected to the card plate 303. A fixing rod 11 is provided inside the tension spring 402. Both ends of the fixing rod 11 are fixedly connected to the main shaft 2 body. The surface of the fixing rod 11 is slidably connected to the indicator block 401.

[0038] Specifically, in this embodiment, there are two tension springs 402, symmetrically distributed on both sides of the bottom of the indicator block 401, providing a balanced and stable bidirectional elastic force to the indicator block 401. This ensures that the indicator block 401 maintains a horizontal and stable posture throughout the entire process of sliding in conjunction with the locking state. The knob 5 provides an external dedicated force application end for the locking and unlocking operation of the locking assembly 3, allowing adjustment of the locking state without the need for special tools to penetrate deep into the hub cavity. The slide groove 6 provides a limit for the rotation of the rotating plate 305, preventing it from shifting during rotation. The positioning groove 7 can limit the range of motion and operation of the locking block, preventing it from shifting during operation and thus failing to connect with the main shaft 2. The cooperation between the positioning groove 8 and the positioning rod 9 can provide guidance and positioning when the hub body 1 is assembled with the main shaft 2. The limiting rod 10 can not only provide guidance for the clamping plate 303, but also prevent the spring 304 from shifting during operation. The fixing rod 11 can limit the movement of the indicator block 401, preventing the indicator block 401 from jamming with the main shaft 2 during operation, thus preventing the locking block 307 from fully entering the main shaft 2.

[0039] The working principle of this invention is as follows: In use, by rotating the rotating rod 301, the rotating rod 301 drives the rotating plate 305 to rotate. As the center distance from one end of the slot 306 to the other end gradually increases, the rotating plate 305 can drive the locking block 307 to move through the slot 306. The locking block 307 presses the main shaft 2 through the inclined surface to lock the hub body 1 and the main shaft 2. At the same time, the locking block 307 pushes the indicator block 401, the indicator block 401 stretches the tension spring 402 and drives the scale groove 403 to move up to the position corresponding to the indicator mark 404, which means that the locking is completed. When disassembly is required, by pushing the locking plate 303, the locking plate 303 compresses the spring 304 and disengages from the position of engaging with the ratchet 302, the rotating rod 301 can be rotated in the direction to remove the hub.

[0040] The present invention also provides a method of using a wind turbine hub device with a locking structure, which includes the following steps: Step 1: Complete the pre-installation positioning of the hub body and the main shaft. Align the positioning rod 9 on the main shaft 2 with the positioning groove 8 opened on one side of the hub body 1. Push the hub body 1 along the inner cavity of the positioning groove 8 so that the positioning rod 9 slides completely into the inner cavity of the positioning groove 8. This achieves precise alignment between the hub body 1 and the main shaft 2, providing a basic positioning for subsequent locking operations. This prevents the locking block 307 from failing to engage with the main shaft 2 due to misalignment, while also ensuring the initial contact of the mating end faces of the hub body 1 and the main shaft 2.

[0041] Step 2: Perform the pre-locking operation of the locking assembly. Hold the knob 5 on the outside of the wheel hub body 1 and slowly rotate the knob 5 clockwise. The knob 5 drives the rotating rod 301 fixedly connected to it to rotate synchronously. The ratchet 302 on the surface of the rotating rod 301 rotates together with the rotating rod 301. During the rotation, the ratchet 302 engages with the locking plate 303 in one direction. Under the action of the ratchet 302, the locking plate 303 slides slightly upward along the limiting rod 10 and compresses the spring 304. The spring 304 forms an elastic restoring force, which provides force for subsequent self-locking and anti-loosening. During this process, the rotating rod 301 is rotatably connected to the wheel hub body 1 through the bearing, which greatly reduces the rotational friction resistance and ensures smooth operation.

[0042] Step 3: After completing the rigid locking of the hub and the main shaft, continue to rotate the knob 5 clockwise. The rotating rod 301 drives the rotating plate 305, which is fixedly connected at one end, to rotate synchronously. The sliding groove 6 on the inner side of the rotating plate 305 slides along the mating part of the hub body 1, providing a limit for the rotation of the rotating plate 305 and preventing it from rotating off-center. During the rotation of the rotating plate 305, the slot 306 opened in its inner cavity forms a pushing force on the locking block 307, causing the locking block 307 to slide along the limiting groove 7 in the inner cavity of the hub body 1 towards the main shaft 2. Because one side of the locking block 307 is inclined, it forms a circumferential squeezing force on the main shaft 2 during the sliding process. The four locking blocks 307 move synchronously to form a uniform clamping force, pushing the hub body 1 closer to the main shaft 2, completely eliminating the axial gap between the mating end faces of the two, and realizing mechanical rigid locking.

[0043] Step 4: Visual verification of the locking status. During the process of the locking block 307 sliding and engaging with the main shaft 2, the top of the locking block 307 pushes upward against the indicator block 401 of the monitoring component 4. The indicator block 401 slides upward along the fixed rod 11 on the main shaft 2, while simultaneously stretching the tension springs 402 symmetrically distributed on both sides of the bottom. The tension springs 402 provide a balanced elastic force to the indicator block 401, ensuring its smooth horizontal sliding. Continuously observe the scale groove 403 on the surface of the indicator block 401 until the calibrated scale of the scale groove 403 is precisely aligned with the indicator mark 404 on the main shaft 2. This indicates that the hub body 1 and the main shaft 2 have been locked in place, and the visual verification of the locking status can be completed without disassembling the device.

[0044] Step 5: Achieve self-locking maintenance of the locked state. After locking is completed, release the force applied to knob 5. Under the elastic restoring force of spring 304, the locking plate 303 slides down along the limit rod 10 and re-engages tightly with ratchet 302. Through the one-way engagement of ratchet 302 and locking plate 303, the rotating rod 301 is stopped and limited, thereby locking the position of rotating plate 305 and locking block 307, keeping the locking assembly 3 locked. When the fan is subjected to alternating wind loads, start-stop impacts and whole machine vibrations, it stably maintains the locking engagement between hub body 1 and main shaft 2, preventing the connection from loosening.

[0045] Step 6: Perform the unlocking and disassembly operation of the device. When it is necessary to inspect and disassemble the wind turbine hub device, press the locking plate 303 upward with your finger, so that the locking plate 303 slides upward along the limit rod 10 and compresses the spring 304 until the locking plate 303 is completely disengaged from the ratchet 302, releasing the anti-reverse limit on the rotating rod 301. Then, turn the knob 5 counterclockwise. The knob 5 drives the rotating rod 301 and the rotating plate 305 to rotate in opposite directions, and the slot 306 locks the locking block 3. When the thrust of 07 disappears, the locking block 307 slides back along the limiting groove 7 in a direction away from the main shaft 2, releasing the clamping and squeezing force on the main shaft 2. At the same time, the indicator block 401 slides down along the fixing rod 11 under the elastic restoring force of the tension spring 402. The scale groove 403 and the indicator 404 are misaligned, visually indicating that the unlocking is complete. Finally, the hub body 1 is pulled in the opposite direction of the positioning groove 8, so that the positioning rod 9 is disengaged from the inner cavity of the positioning groove 8, completing the separation and disassembly of the hub body 1 and the main shaft 2.

[0046] Step 7: Complete the reset check after disassembly. After disassembly, release the pressure on the clamping plate 303. The clamping plate 303 will reset under the action of the spring 304 and return to a light engagement state with the ratchet 302. Check whether the locking block 307 has been fully reset to the initial position of the limit groove 7, whether the indicator block 401 is in contact with the surface of the spindle 2, whether the springs 304 and tension springs 402 are deformed or ineffective, and whether there is any sticking or wear in the sliding parts. Ensure that all parts are in a normal reset state to provide a guarantee for the next assembly and locking operation.

[0047] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A wind turbine hub device with a locking structure, comprising a hub body (1), wherein a main shaft (2) is provided on one side of the hub body (1), characterized in that, The inner cavity of the hub body (1) is provided with a locking assembly (3). The locking assembly (3) includes a rotating rod (301) located inside the hub body (1). A ratchet (302) is fixedly connected to the surface of the rotating rod (301). A locking plate (303) is engaged inside the ratchet (302) and is fixedly connected to the hub body (1). A spring (304) is connected to the top of the locking plate (303) and is connected to the hub body (1). One end of the rotating rod (301) is fixedly connected to a rotating plate (305), and the other side of the rotating plate (305) is rotatably connected to the hub body (1). The inner cavity of the rotating plate (305) is provided with a slot (306), and a locking block (307) is slidably connected to the inner cavity of the slot (306). The other side of the locking block (307) is engaged with the main shaft (2). One side of the locking block (307) is inclined, and during the sliding process, it forms a circumferential squeezing force on the main shaft (2), causing the hub body (1) to move closer to the main shaft (2) until locking is completed.

2. The wind turbine hub device with a locking structure according to claim 1, characterized in that, The top of the locking block (307) is provided with a monitoring component (4), which includes an indicator block (401). The indicator block (401) is slidably connected to the fixing rod (11) of the main shaft (2). A tension spring (402) is fixedly connected to the bottom of the indicator block (401). The bottom of the tension spring (402) is fixedly connected to the main shaft (2). A scale groove (403) is opened on the surface of the indicator block (401). An indicator mark (404) is provided on the main shaft (2). The indicator mark (404) is located on one side of the scale groove (403). When the calibration scale on the scale groove (403) is aligned with the indicated position on the indicator (404), it means that the hub body (1) and the main shaft (2) are locked in place.

3. A wind turbine hub device with a locking structure according to claim 1, characterized in that, The inner side of the rotating plate (305) is provided with a sliding groove (6), and the inner cavity of the sliding groove (6) is slidably connected to the protrusions corresponding to the hub body (1) to provide a limit for the rotation of the rotating plate (305) and avoid rotational deviation.

4. A wind turbine hub device with a locking structure according to claim 1, characterized in that, The inner cavity of the hub body (1) is provided with a limiting groove (7), and the inner cavity of the limiting groove (7) is slidably connected to the locking block (307) to provide sliding space for the locking block (307).

5. A wind turbine hub device with a locking structure according to claim 1, characterized in that, The hub body (1) has a positioning groove (8) on one side, and the main shaft (2) is connected to a positioning rod (9) that cooperates with the positioning groove (8). The positioning rod (9) is used to achieve precise alignment of the hub body (1) and the main shaft (2) after it is fully slid into the positioning groove (8).

6. A wind turbine hub device with a locking structure according to claim 1, characterized in that, A limiting rod (10) is provided on the inner side of the spring (304). The top of the limiting rod (10) is fixedly connected to the hub body (1). The surface of the limiting rod (10) is slidably connected to the clamping plate (303). The clamping plate (303) is provided with a groove for the limiting rod (10) to slide.

7. A wind turbine hub device with a locking structure according to claim 1, characterized in that, The ratchet (302) engages with the locking plate (303) in a one-way manner.

8. A wind turbine hub device with a locking structure according to claim 1, characterized in that, One end of the rotating rod (301) is provided with a knob (5), which is located on the outside of the hub body (1).

9. A wind turbine hub device with a locking structure according to claim 1, characterized in that, The wind turbine hub assembly is used for the wind turbines of auxiliary equipment in thermal power plants.

10. A method of using a wind turbine hub device with a locking structure as described in any one of claims 1-9, characterized in that, Includes the following steps: Align the main shaft (2) with the hub body (1) for pre-installation positioning; Hold the rotating rod (301) on the outside of the hub body (1) and rotate it clockwise. The ratchet (302) on the surface of the rotating rod (301) rotates with it and engages with the locking plate (303) in one direction. The locking plate (303) slides upward under the force of the ratchet (302) and compresses the spring (304). The spring (304) forms an elastic restoring force, completing the pre-locking operation of the locking assembly (3). Continue rotating the lever (301) clockwise. The lever (301) drives the rotating plate (305) fixed at one end to rotate synchronously. The rotating plate (305) rotates within the sliding space provided by the hub body (1). During the rotation of the rotating plate (305), the slot (306) of the rotating plate (305) generates a thrust on the locking block (307), causing the locking block (307) to slide along the sliding space provided by the inner cavity of the hub body (1) towards the main shaft (2). The locking block (307) generates a circumferential squeezing force on the main shaft (2), pushing the hub body (1) closer to the main shaft (2) until mechanical rigid locking is achieved. When the force applied to the rotating rod (301) is released, the locking plate (303) slides downward under the elastic restoring force of the spring (304) and re-engages tightly with the ratchet (302). The unidirectional engagement between the ratchet (302) and the locking plate (303) achieves the anti-retraction limit of the rotating rod (301), locks the position of the rotating plate (305) and the locking block (307), keeps the locking assembly (3) in a locked state, and achieves self-locking anti-loosening and anti-retraction. When disassembly and maintenance are required, press the clamp plate (303) upward to make it slide up and compress the spring (304) until the clamp plate (303) is completely disengaged from the ratchet (302), releasing the limit on the rotating rod (301). Then rotate the rotating rod (301) counterclockwise and drive the rotating plate (305) to rotate counterclockwise, so that the pushing force of the slot (306) on the locking block (307) disappears, and the locking block (307) resets along the limit groove (7) away from the main shaft (2), releasing the clamping pressure on the main shaft (2) and completing the unlocking. Pull the hub body (1) in the opposite direction of the positioning groove (8) to complete the separation and disassembly of the hub body (1) and the main shaft (2). After disassembly, release the pressure on the clamping plate (303) so that it can be reset under the action of the spring (304), and check whether each component has returned to its initial normal state.

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