A fan blade angle adjusting device

Abstract

The utility model relates to fan technical field especially, it relates to a fan blade angle adjusting device. Including the casing, a plurality of blades and drive mechanism, wherein a plurality of blades circumferentially equidistance setting on the casing are used for reaching the angle adjustment of self on the casing under the action of drive mechanism. Drive mechanism is used for synchronous stable drive all blades relative to the angle adjustment of casing, thereby realizes the best operation efficiency of fan under different working conditions. The utility model discloses the combination of main and driven parts and transmission part, realizes the quick, convenient adjustment of blade angle. Without again carrying out the tedious dismounting and reinstallation process, the manpower and time cost are greatly saved. Meanwhile, the device abrasion that can be caused due to frequent dismounting is avoided, prolongs the service life of device, through the cooperation of wind speed sensor and controller, can automatically adjust the blade angle according to the wind speed change, improves the working efficiency and stability of fan.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine blade angle adjustment device. Background Technology

[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas; it is a type of driven fluid machinery. The most important component of a fan is the impeller, which generally consists of blades and a hub. The blades are usually evenly distributed on the hub. When the impeller rotates, the blades drive the surrounding gas to rotate as well, thereby achieving gas transportation.

[0003] Patent document CN203978916U discloses a wind turbine blade angle adjustment device, comprising: a blade connecting part and a hub connecting part disposed on one side of the blade connecting part. The blade connecting part includes protrusions evenly arranged along its circumference, and the hub connecting part includes protrusions or recesses that mate with a hub. This wind turbine blade angle adjustment device eliminates the need for auxiliary tooling during blade installation, making installation convenient. It also allows for multiple angle selections during installation with high adjustment precision, while avoiding repeated angle adjustments after installation, thus improving assembly efficiency.

[0004] When using the above-mentioned technology, the following technical problems were found in the existing technology: Adjusting the blade angle requires disassembly and reinstallation to achieve the angle change. This process is not only time-consuming and labor-intensive, but also prone to wear and tear on the device during frequent disassembly. Therefore, a wind turbine blade angle adjustment device is designed to provide an alternative technical solution to the above-mentioned technical problems. Utility Model Content

[0005] Therefore, it is necessary to provide a wind turbine blade angle adjustment device to address the above-mentioned technical problems, thereby solving the technical problems of inconvenience, time-consuming and labor-intensive adjustment of wind turbine blade angle in the prior art, and easy wear.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A wind turbine blade angle adjustment device includes a housing and a plurality of blades circumferentially and equidistantly disposed on the housing, and further includes:

[0008] The drive mechanism includes a driven member disposed within the housing, and an active member that drives the driven member to move within the housing via a transmission member, thereby synchronously driving the multiple blades to rotate relative to the housing.

[0009] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the housing includes a cavity for accommodating a driven member, and a front end cover and a rear end cover for enclosing the driven member in the cavity.

[0010] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the driven member includes a first plate for receiving the power transmitted by the transmission member, a frame fixed on the first plate, and a first braking part disposed between the plurality of blades and the frame, which can drive the blade cavity to rotate.

[0011] The first braking unit includes a gear fixed to the end of the blade extending into the cavity, and a rack fixed to the frame and capable of rotating the blade via the gear.

[0012] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the transmission component includes a first tube that can only move linearly on the rear end cover through a first guide portion and is fixed to the first plate of the driven component, and a second braking portion that connects the first tube and the driving component and can transmit the power of the driving component to the first tube.

[0013] The first guide portion includes a plurality of first grooves formed on the rear end cover, and a plurality of second grooves formed circumferentially at equal intervals on the first tube, thereby forming a movable segment in the first tube located between the plurality of second grooves that can slide on the plurality of first grooves.

[0014] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the second braking part includes a second pipe rotatably connected to the first pipe via a first bearing, a third pipe connected to the driving member and sleeved outside the second pipe and threadedly connected to the inner and outer sides of the second pipe, and a set of second guide parts that restrict the second pipe from rotating with the third pipe, thereby allowing the second pipe to extend and retract within the third pipe under the drive of the third pipe.

[0015] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the active component includes a second plate fixed to an external object, a baffle fixed to one side of the second plate, a third braking part disposed in the baffle and capable of driving the third tube to rotate, and a motor driving the third braking part to move.

[0016] In a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, the third braking part includes a worm gear fixed to the third pipe and rotatably connected to the second plate through the second bearing, and a worm gear rotatably connected inside the baffle and meshing with the worm gear and coaxially connected to the motor.

[0017] In a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, each of the second guide portions includes a collar fixed on the baffle and a rod with one end fixed to the second tube and the other end extending through the collar.

[0018] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, it further includes a rotating shaft, which is fixed to the housing via a driving member, a transmission member and a driven member.

[0019] As a preferred embodiment of the wind turbine blade angle adjustment device provided by this utility model, it further includes a wind speed sensor and a controller: the wind speed sensor is used to monitor the wind speed, and the controller is used to adjust the stroke of the driven member through the active member when the wind speed monitored by the wind speed sensor is at a specified threshold, so as to adjust the angle of the multiple blades on the casing.

[0020] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0021] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0022] When adjusting the blade angle, it is necessary to stop disassembling and reinstalling to change the angle. This process is not only time-consuming and labor-intensive, but also prone to wear and tear on the device during frequent disassembly.

[0023] This utility model provides a wind turbine blade angle adjustment device that achieves rapid and convenient blade angle adjustment through the combination of driving and driven components and transmission components. It eliminates the need for cumbersome disassembly and reinstallation, significantly saving manpower and time costs. Simultaneously, it avoids wear and tear that may result from frequent disassembly, extending the device's service life.

[0024] This utility model provides a fan blade angle adjustment device that, through the cooperation of a wind speed sensor and a controller, can automatically adjust the blade angle according to changes in wind speed, thereby improving the working efficiency and stability of the fan. Attached Figure Description

[0025] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of a fan blade angle adjustment device according to the present invention;

[0027] Figure 2 This is a schematic diagram of the drive mechanism of a wind turbine blade angle adjustment device according to the present invention;

[0028] Figure 3 This is a schematic diagram of the driven component of a fan blade angle adjustment device of this utility model inside the housing;

[0029] Figure 4 This is a schematic diagram of the driven component of a wind turbine blade angle adjustment device from another perspective inside the casing.

[0030] Figure 5 This is a partial cross-sectional view of the transmission component and the driving component of a wind turbine blade angle adjustment device according to this utility model.

[0031] In the diagram: 100, housing; 101, cavity; 102, front cover; 103, rear cover; 110, blade; 120, rotating shaft; 200, drive mechanism; 300, driven component; 310, first plate; 320, frame; 330, first braking part; 331, gear; 332, rack; 400, transmission component; 410, first guide part; 411, first groove; 412, second groove; 413, moving section; 420, first tube; 430, second braking part; 431, first bearing; 432, second tube; 433, third tube; 500, driving component; 510, second plate; 520, baffle; 530, third braking part; 540, motor; 531, second bearing; 532, worm gear; 533, worm; 600, second guide part; 610, collar; 620, rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] 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.

[0036] like Figure 1 As shown, this type of wind turbine blade angle adjustment device includes a housing 100, multiple blades 110, and a drive mechanism 200. The multiple blades 110 are circumferentially equidistantly arranged on the housing 100, and are used to adjust their angles under the action of the drive mechanism 200, thereby generating wind or adjusting the wind direction. The drive mechanism 200, as a core component, is designed with a transmission system, including but not limited to gears, bearings, and worm gears, to ensure that all blades 110 can be synchronously and stably driven to adjust their angles relative to the housing 100.

[0037] It should be noted that the shapes and structures of the housing 100 and blades 110 are adapted to specific application scenarios, and the figures are for illustrative purposes only. For example, the housing 100 can be cylindrical or streamlined to reduce air resistance and improve the efficiency of the fan. The blades 110 can adopt an aerodynamically optimized airfoil design to enhance the flexibility of wind power output and regulation. In some instances, the surface of the blades 110 is covered with wear-resistant and corrosion-resistant materials to extend service life and adapt to harsh working environments.

[0038] like Figure 2 As shown, and refer to Figure 1 The drive mechanism 200 further includes a driven member 300, a transmission member 400, and a driving member 500. Specifically, the driven member 300 is located inside the housing 100 and connected to the blade 110, serving to receive power transmitted by the transmission member 400. The transmission member 400, acting as a bridge connecting the driving member 500 and the driven member 300, transmits power from the driving member 500 to the driven member 300. The driving member 500 achieves fine adjustment of the blade 110 angle by precisely controlling its rotation angle and speed.

[0039] Based on the above, the housing 100 further includes a cavity 101, a front cover 102, and a rear cover 103. Specifically, the cavity 101 is designed to accommodate the driven component 300 and ensure its stable operation. The front cover 102 and the rear cover 103 respectively seal the front and rear ends of the cavity 101, effectively preventing external impurities such as dust and moisture from entering and protecting the driven component 300 from damage. The front cover 102 and the rear cover 103 can be fastened using bolts or other reliable fixing methods to ensure sealing and stability.

[0040] like Figure 3 As shown, and refer to Figure 2The driven member 300 further includes a first plate 310, a frame 320, and a first braking part 330. Specifically, the first plate 310, as the core component receiving power from the transmission member 400, is designed to be robust and wear-resistant, ensuring efficient and stable power transmission. The frame 320 is firmly fixed to the first plate 310, forming a stable support structure. The first braking part 330 is disposed between the multiple blades 110 and the frame 320, enabling the driven member 300 to drive the first plate 310, thereby causing the blades 110 to rotate precisely outside the cavity 101, thus achieving fine adjustment of the angle of the fan blades 110.

[0041] In some embodiments, such as Figure 4 As shown, and refer to Figure 3 The first braking unit 330 further includes a gear 331 and a rack 332; specifically, the gear 331 is fixed to the end of each blade 110 extending into the cavity 101. The rack 332 is fixed parallel to the length direction of the frame 320, ensuring the straightness and pitch accuracy of the rack 332. When the driven member 300 receives power from the transmission member 400, the first plate 310 drives the frame 320 and the rack 332 to move. The meshing action of the rack 332 and the gear 331 causes the blades 110 to rotate precisely outside the cavity 101, thereby achieving fine adjustment of the angle of the fan blades 110.

[0042] like Figure 5 As shown, and refer to Figure 1 - Figure 4 The transmission component 400 further includes a first guide portion 410, a first tube 420, and a second braking portion 430. Specifically, the first guide portion 410 is disposed on the rear end cover 103 and the first tube 420. Its structure can ensure that the first tube 420 can only move in a straight line. One end of the first tube 420 is fixedly connected to the first plate 310 of the driven component 300, and the other end is connected to the second braking portion 430.

[0043] The second braking unit 430 is connected between the first tube 420 and the driving member 500, and serves to receive and convert the rotational power of the driving member 500 to the first tube 420, thereby driving the blade 110 to rotate through the driven member 300. This design not only ensures the effective transmission of power, but also achieves precise control of the blade angle of the fan 110.

[0044] In some embodiments, such as Figure 5As shown, the first guide section 410 further includes multiple first grooves 411, multiple second grooves 412, and multiple moving segments 413. Specifically, each of the multiple first grooves 411 is opened on the rear end cover 103 to guide the sliding path of the multiple moving segments 413 formed by the multiple second grooves 412 equidistantly opened on the circumference of the first tube 420. This design not only enhances the stability of the structure but also effectively restricts the direction of movement of the first tube 420, ensuring the accuracy of power transmission. Under the combined action of the first grooves 411 and the second grooves 412, the moving segments 413 can move precisely along a predetermined path, thereby driving the driven member 300 and the blade 110 to achieve precise angle adjustment.

[0045] In some embodiments, such as Figure 5 As shown, the second braking unit 430 further includes a first bearing 431, a second tube 432, a third tube 433, and a set of second guide parts 600. Specifically,

[0046] The second tube 432 and the first tube 420 are rotatably connected by the first bearing 431, which ensures that the second tube 432 can smoothly extend and retract when driven by the third tube 433 without affecting the static state of the first tube 420.

[0047] The third tube 433 is connected to the driving member 500. Its inner wall has an internal thread that matches the external thread on the outer wall of the second tube 432, forming a helical transmission structure. When the driving member 500 rotates, the third tube 433 rotates accordingly, driving the second tube 432 to extend and retract within the third tube 433 through the interaction of the threads.

[0048] A set of second guide sections 600 are disposed on the second tube 432 to restrict the rotational freedom of the second tube 432, ensuring that the second tube 432 can only perform telescopic movements and cannot rotate with the third tube 433. This design not only improves the efficiency of power transmission, but also ensures the accuracy and stability of the adjustment of the fan blade angle 110.

[0049] Continue as Figure 5 As shown, the active component 500 further includes a second plate 510, a baffle 520, a third braking part 530, and a motor 540. Specifically, the second plate 510 serves as the supporting foundation for the entire active component 500. Its robust design ensures a stable connection with external objects and provides a stable support point for the entire adjustment device. The baffle 520 is fixed to one side of the second plate 510, forming a closed space that effectively protects the internal third braking part 530 from interference and damage from the external environment.

[0050] The third braking unit 530, as a key component for power transmission, is located inside the baffle 520. It is in close cooperation with the third tube 433. When the motor 540 starts, the third braking unit 530 can respond quickly and drive the third tube 433 to rotate. The motor 540, as the power source of the entire adjustment device, is installed on the baffle 520 and / or the second plate 510. Its output shaft is connected to the third braking unit 530. When the motor 540 receives a control signal, it outputs power and drives the second braking unit 430 to move through the third braking unit 530. Subsequently, the second braking unit 430 drives the first braking unit 330 to move, and finally, the multiple blades 110 are synchronously adjusted to the specified angle.

[0051] In some instances, such as Figure 5 As shown, the third braking part 530 further includes a second bearing 531, a worm gear 532, and a worm 533; specifically, the second bearing 531 is mounted on the second plate 510, providing a stable and flexible rotation support for the worm gear 532 (i.e., the middle of the worm gear 532 is hollowed out and fixed to the second bearing 531 by interference fit, so that the worm gear 532 can smoothly rotate the second plate 510), ensuring the stability and durability of the worm gear 532 during rotation.

[0052] One side of the worm gear 532 is fixedly connected to the third tube 433, so that the third tube 433 rotates when the worm gear 532 rotates. The worm 533, as a key component meshing with the worm gear 532, is rotatably connected within the retaining housing 520 and coaxially connected to the motor 540. When the motor 540 starts, the worm 533 rotates accordingly, driving the worm gear 532 to rotate through meshing, thus achieving power transmission and adjustment of the blade 110 angle. This worm gear 532 and worm 533 transmission design not only has a self-locking function, effectively preventing the blade 110 from rotating uncontrollably, but also improves the reliability and stability of the entire adjustment device due to its large transmission ratio and compact structure.

[0053] Each set of second guide sections 600 includes a collar 610 fixed to the baffle 520 and a rod 620 with one end fixed to the second tube 432 and the other end extending through the collar 610.

[0054] In some embodiments, such as Figure 5 As shown, each of the second guide portions 600 includes a collar 610 and a rod 620; specifically, the collar 610 is fixed to the outer wall of the retaining housing 520, providing a fixed guide point.

[0055] One end of the rod 620 is fixedly connected to the second tube 432, ensuring consistency in their movements; the other end of the rod 620 extends through the collar 610. This design not only restricts the movement trajectory of the rod 620 and prevents it from deviating in an unexpected direction, but also allows the rod 620 and the connected second tube 432 to move smoothly along a preset path through the guiding effect of the collar 610.

[0056] Based on the above, and as follows Figure 2 , Figure 3 and Figure 5 As shown, it also includes a rotating shaft 120, which is fixed to the housing 100 via a driving member 500, a transmission member 400 and a driven member 300. This allows it to adjust the angle of multiple blades 110 without affecting the function of driving multiple blades 110 to rotate at high speed via the rotating shaft 120.

[0057] In some embodiments, not shown in the figures, a wind speed sensor and a controller are also included. Specifically, the wind speed sensor is installed externally or at a suitable location on the device, capable of capturing real-time changes in wind speed in the surrounding environment and accurately feeding back the wind speed data to the controller. The controller utilizes a built-in wind speed threshold circuit. When the wind speed detected by the wind speed sensor reaches or exceeds the preset threshold, the controller immediately activates the adjustment mechanism. By controlling the movement of the active component 500, the stroke of the driven component 300 is adjusted, achieving fine adjustment of the blade angle 110°. This adjustment is not only rapid but also accurate, automatically optimizing the blade angle 110° according to changes in wind speed, thereby improving the operating efficiency and stability of the wind turbine.

[0058] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wind turbine blade angle adjustment device, comprising a housing (100) and a plurality of blades (110) circumferentially and equidistantly disposed on the housing (100), characterized in that, Also includes: The drive mechanism (200) includes a driven member (300) disposed in the housing (100) and an active member (500) that drives the driven member (300) to move in the housing (100) via a transmission member (400), thereby synchronously driving the plurality of blades (110) to rotate relative to the housing (100).

2. The wind turbine blade angle adjustment device according to claim 1, characterized in that, The housing (100) includes a cavity (101) for accommodating the follower (300), and a front cover (102) and a rear cover (103) for enclosing the follower (300) within the cavity (101).

3. The wind turbine blade angle adjustment device according to claim 2, characterized in that, The driven member (300) includes a first plate (310) that receives the power transmitted by the transmission member (400), a frame (320) fixed on the first plate (310), and a first braking part (330) disposed between the plurality of blades (110) and the frame (320) and capable of driving the blade (110) cavity (101) to rotate. The first braking part (330) includes a gear (331) fixed to the end of the blade (110) extending into the cavity (101), and a rack (332) fixed to the frame (320) and capable of rotating the blade (110) by means of the gear (331).

4. The wind turbine blade angle adjustment device according to claim 3, characterized in that, The transmission component (400) includes a first tube (420) that can only move linearly on the rear end cover (103) via a first guide (410) and is fixed to the first plate (310) of the driven component (300), and a second braking component (430) that connects the first tube (420) and the driving component (500) and can transmit the power transmission of the driving component (500) to the first tube (420); The first guide portion (410) includes a plurality of first grooves (411) formed on the rear end cover (103), and a plurality of second grooves (412) formed circumferentially at equal intervals on the first tube (420), thereby forming a movable segment (413) in the first tube (420) between the plurality of second grooves (412) that can slide on the plurality of first grooves (411).

5. The wind turbine blade angle adjustment device according to claim 4, characterized in that, The second braking part (430) includes a second tube (432) rotatably connected to the first tube (420) via a first bearing (431), a third tube (433) connected to the driving member (500) and sleeved outside the second tube (432) and threaded internally and externally connected to the second tube (432), and a set of second guide parts (600) that restrict the second tube (432) from rotating with the third tube (433), thereby causing the second tube (432) to extend and retract within the third tube (433) under the drive of the third tube (433).

6. The wind turbine blade angle adjustment device according to claim 5, characterized in that, The active component (500) includes a second plate (510) fixed to an external object, a baffle (520) fixed to one side of the second plate (510), a third braking part (530) disposed inside the baffle (520) and capable of driving the third tube (433) to rotate, and a motor (540) driving the third braking part (530) to move.

7. The wind turbine blade angle adjustment device according to claim 6, characterized in that, The third braking part (530) includes a worm gear (532) fixed to the third tube (433) and rotatably connected to the second plate (510) via the second bearing (531), and a worm (533) rotatably connected inside the baffle (520) and meshing with the worm gear (532) and coaxially connected to the motor (540).

8. The wind turbine blade angle adjustment device according to claim 7, characterized in that, Each of the second guide portions (600) includes a collar (610) fixed to the baffle (520) and a rod (620) with one end fixed to the second tube (432) and the other end extending through the collar (610).

9. The wind turbine blade angle adjustment device according to any one of claims 1 to 8, characterized in that, It also includes a rotating shaft (120), which is fixed to the housing (100) via a driving member (500), a transmission member (400) and a driven member (300).

10. The wind turbine blade angle adjustment device according to any one of claims 1 to 8, characterized in that, It also includes a wind speed sensor and a controller: the wind speed sensor is used to monitor wind speed, and the controller is used to adjust the stroke of the driven member (300) through the active member (500) when the wind speed monitored by the wind speed sensor is at a specified threshold, so as to adjust the angle of the multiple blades (110) on the housing (100).

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