Adjusting and executing mechanism for moving blades of fan

Abstract

The invention discloses a fan moving blade adjusting executing mechanism which comprises a fixing frame, a fan main shaft is rotatably installed on the fixing frame, fan blades are arranged on the fan main shaft, an adjusting assembly is arranged in the fan main shaft and used for adjusting the installation angle of the fan blades, and the adjusting assembly comprises an adjusting assembly which is rotatably installed in the fan main shaft and used for adjusting the installation angle of the fan blades. The adjusting disc is used for providing power for adjusting the installation angle of the fan blades, the driving rod and the adjusting disc are coaxially fixed, and a switching piece for controlling the output rotating speed of the adjusting disc is further arranged in the fan main shaft. The fan has the beneficial effects that the function of adjusting the installation angle of the fan blades is achieved under the cooperation of the adjusting bevel gear and other structures, the air volume or air force generated by the fan can be adjusted on the premise that the energy consumption is reduced, in addition, the installation angle of the fan blades can be adjusted through the arrangement of the switching piece, adjustment can be conducted when the fan runs, and the fan is more convenient to use. Therefore, the requirements of some continuous working environments are met, and the application range of the device is expanded.

Description

Technical Field

[0001] This invention relates to the field of fan blade adjustment, and in particular to a fan blade adjustment actuator. Background Technology

[0002] Adjusting the installation angle of fan blades is one of the core methods for controlling fan performance, directly affecting airflow, air pressure, energy consumption, and operational stability. Most existing equipment stops the fan first, then adjusts the fan blade angle. This is because suddenly adjusting the fan blades to an excessively large angle while the fan is running can cause deformation under the influence of centrifugal force and airflow impact, thus affecting the blades' lifespan and reducing the fan's output efficiency. However, in some continuous operation scenarios, the fan needs to run continuously, and stopping it would have adverse effects. Therefore, we propose a fan blade adjustment actuator. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the existing fan blade adjustment mechanism is inconvenient to adjust the fan blade installation angle during fan operation and is not convenient to use in continuous working environment.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fan blade adjustment actuator, comprising a fixed frame, a fan main shaft rotatably mounted on the fixed frame, fan blades provided on the fan main shaft, and an adjustment component disposed inside the fan main shaft for adjusting the fan blade installation angle, comprising an adjustment disc rotatably mounted inside the fan main shaft for providing power for adjusting the fan blade installation angle and a drive rod coaxially fixed with the adjustment disc, and a switching component for controlling the output speed of the adjustment disc in the fan main shaft.

[0005] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, an adjustment cone disk is rotatably mounted in the main shaft of the wind turbine, and an adjustment bevel gear fixed coaxially with the fan blade is meshed on the adjustment cone disk, and the adjustment bevel gear is rotatably connected to the main shaft of the wind turbine.

[0006] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, the switching component includes a switching gear cylinder coaxially fixed on the side of the adjustment cone disk away from the adjustment bevel gear, a first adjustment gear meshing with the switching gear cylinder is rotatably installed in the switching gear cylinder, and the first adjustment gear externally meshes with a second adjustment gear coaxially fixed with the adjustment disk.

[0007] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, a switching ring is provided between the adjusting cone and the switching gear cylinder and is fixedly connected to the adjusting cone. An arc-shaped gear ring is slidably installed on the switching ring. A switching gear, which is coaxially fixed to the first adjusting gear, meshes with the inner side of the arc-shaped gear ring. A switching groove is provided on the switching ring, and a switching slider, which is fixedly connected to the arc-shaped gear ring, is slidably installed in the switching groove.

[0008] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, wherein: a contact block is provided at one end of the switching slide near the inner wall of the wind turbine main shaft, and both the contact block and the switching slider are magnetic blocks that attract each other.

[0009] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, the wind turbine main shaft is provided with a switching hole, a switching rod is provided in the switching hole, one end of the switching rod slides into the wind turbine main shaft and abuts against the outer arc surface of the arc-shaped toothed ring.

[0010] In a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, the other end of the switching rod is provided with a switching screw, and the switching screw is threadedly connected to the switching hole, and a switching spring is provided between the switching rod and the switching screw.

[0011] In a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, a limiting box is rotatably installed at the end of the drive rod away from the main shaft of the wind turbine. The limiting box is provided with a limiting component for limiting the rotation of the drive rod. The limiting component includes a limiting turntable located inside the limiting box and coaxially fixed with the drive rod. A limiting square plate is attached to one side of the limiting turntable, and the limiting square plate is slidably installed inside the limiting box. The edge of the limiting square plate abuts against the inner wall of the limiting box.

[0012] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, wherein: a limiting spring is provided on one side of the limiting square plate and fixedly connected to the inner wall of the limiting box; the end of the driving rod away from the main shaft of the wind turbine passes through the limiting box and is slidably fitted with a limiting sleeve; and a connecting rod that is slidably connected to the limiting box is fixedly installed between the limiting sleeve and the limiting square plate.

[0013] As a preferred embodiment of the wind turbine blade adjustment actuator of the present invention, the limiting box is provided with an indicator dial, and an indicator needle is rotatably installed in the indicator dial. The limiting box is provided with a transmission component on the side opposite to the indicator dial for transmission connection between the drive rod and the indicator needle.

[0014] The beneficial effects of the fan blade adjustment actuator of the present invention are as follows: by adjusting the bevel gear and other structures, the function of adjusting the fan blade installation angle is realized, so that the fan can adjust the air volume or wind force it generates while saving energy. In addition, the setting of the switching component allows the fan blade installation angle to be adjusted during the operation of the fan, thereby meeting the needs of some continuous working environments and expanding the application range of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0016] Figure 1 A three-dimensional structural diagram of the invention is shown;

[0017] Figure 2 A side sectional view of the invention is shown in the schematic diagram.

[0018] Figure 3 It shows Figure 2 Enlarged structural diagram of region A in the middle;

[0019] Figure 4 It shows Figure 2 Enlarged structural diagram of region B in the middle;

[0020] Figure 5 A schematic diagram showing the combined state of the switching lever, switching lead screw, and switching spring in the invention is provided.

[0021] Figure 6 A cross-sectional view of the limiting box in the invention is shown.

[0022] 1. Fixed frame; 2. Fan main shaft; 3. Fan blade; 4. Adjustment assembly; 41. Adjustment disc; 42. Drive rod; 43. Adjustment cone disc; 44. Adjustment bevel gear; 45. Switching component; 451. Switching gear cylinder; 452. First adjusting gear; 453. Second adjusting gear; 454. Switching ring; 455. Arc-shaped gear ring; 456. Switching gear; 457. Switching slide; 458. Switching slider; 459. Abutment block; 46. Switching hole; 47. Switching rod; 48. Switching lead screw; 49. Switching spring; 5. Limiting box; 6. Limiting assembly; 61. Limiting turntable; 62. Limiting square disc; 63. Limiting spring; 64. Limiting sleeve; 65. Connecting rod; 66. Indicator dial; 67. Indicator needle; 68. Transmission component. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0025] This embodiment provides a wind turbine blade adjustment actuator, such as Figure 1 As shown, a fan main shaft 2 is rotatably mounted on a fixed frame 1. Fan blades 3 are mounted on the fan main shaft 2. When the fan main shaft 2 runs, it drives the fan blades 3 to run together, thereby generating a blowing airflow. However, in order to adjust the air volume or air pressure generated by the fan, in addition to increasing the output speed of the fan main shaft 2, the installation angle of the fan blades 3 can also be adjusted. This is because the air volume or air pressure generated by the fan can be adjusted while saving energy. Therefore, the present invention provides an adjustment component 4 in the fan main shaft 2 for adjusting the installation angle of the fan blades 3. The adjustment component 4 includes an adjustment disc 41 and an adjustment cone disc 43 rotatably mounted in the fan main shaft 2, and the adjustment disc 41 and the adjustment cone disc 43 are connected in a transmission manner.

[0026] like Figure 2 As shown, a drive rod 42 is coaxially fixed to the side of the adjusting disc 41 away from the adjusting cone disc 43. Rotating the drive rod 42 will drive the adjusting disc 41 to rotate. Since the adjusting cone disc 43 is connected to the adjusting disc 41 through a transmission, the adjusting cone disc 43 will also rotate synchronously when the adjusting disc 41 is running, thereby engaging and rotating the adjusting bevel gear 44 installed in the main shaft 2 of the fan. Figure 2 As shown, the adjusting bevel gear 44 is fixed coaxially with the fan blade 3. Therefore, when the adjusting bevel gear 44 is running, it will drive the fan blade 3 to rotate synchronously, thereby realizing the function of adjusting the installation angle of the fan blade 3. This allows the fan to adjust its own air volume or air force while saving energy, thus achieving the adjustment of the fan output effect.

[0027] In existing blowers, adjusting the fan blade 3 usually requires stopping the machine first, and then adjusting the installation angle of the fan blade 3. However, this method is very unfriendly to some continuous working situations. For example, when a boiler is working, the calorific value of the fuel, the amount of feed, and the back pressure of the furnace will change over time. If the blower's airflow cannot keep up due to shutdown, the product will be scrapped, and in severe cases, it may even cause the boiler to explode. Therefore, a switching element 45 is provided inside the blower main shaft 2, between the adjusting cone 43 and the adjusting disc 41, for adjusting the installation angle of the fan blade 3 during blower operation. Figure 2 As shown, the switching component 45 includes a switching gear cylinder 451 that is coaxially fixed with the adjusting cone disk 43. A first adjusting gear 452 that is rotatably connected to the switching gear cylinder 451 is meshed inside the switching gear cylinder 451. A second adjusting gear 453 that is coaxially fixed with the adjusting disk 41 is meshed with the first adjusting gear 452 at a position away from the meshing surface of the switching gear cylinder 451.

[0028] Therefore, when the drive rod 42 drives the adjusting disc 41 to rotate, it will simultaneously drive the second adjusting gear 453 to rotate. The second adjusting gear 453, through tooth meshing, will drive the first adjusting gear 452 to rotate in the switching gear cylinder 451, thereby meshing with the switching gear cylinder 451 and rotating together. Since the switching gear cylinder 451 and the adjusting cone disc 43 are coaxially fixed, the rotation of the switching gear cylinder 451 will drive the adjusting cone disc 43 to rotate. Finally, through the meshing between the adjusting cone disc 43 and the adjusting bevel gear 44, the installation angle of the fan blade 3 is adjusted. Figure 2 As shown, the number of teeth between the second adjusting gear 453, the first adjusting gear 452, and the switching gear cylinder 451 increases progressively. Therefore, after the second adjusting gear 453 rotates one revolution, the switching gear cylinder 451 will only rotate a certain angle and not rotate a full revolution while the teeth are engaged. This reduces the output speed of the adjusting disc 41, making the adjustment of the fan blade 3 installation angle very slow. This reduces the airflow impact force on the fan blade 3 during the adjustment process, reduces the rate of deformation of the fan blade 3, extends the service life of the fan blade 3, and enables the adjustment of the fan blade 3 installation angle during fan operation. This meets the needs of some continuous working environments and expands the applicability of the device.

[0029] However, during long-term operation, some structures on the fan may loosen due to vibration, temperature changes, mechanical loosening, etc. The fan blades (3) may also undergo irreversible deformation due to prolonged use, affecting the fan's air output efficiency. Therefore, the fan needs to be shut down periodically for maintenance and replacement of any non-functional components. For example, if fan blades (3) need to be replaced due to deformation, their installation angle needs to be adjusted. This is because deformation of fan blades (3) will alter the fan's output performance, namely airflow and air pressure. To achieve the original output effect of the fan, the installation angle of the fan blade 3 needs to be adjusted using the adjustment component 4. However, if the deformed fan blade 3 is replaced during fan maintenance, and the replaced fan blade 3 retains the adjusted installation angle, the fan's output effect will exceed the set value. Therefore, the angle of the fan blade 3 needs to be adjusted. The adjustment component 4 used for adjusting the installation angle of the fan blade 3 in this invention is suitable for adjustment during fan operation, but its adjustment efficiency is slow and cannot meet the needs of adjustment during shutdown. Figure 3 and Figure 4 As shown, the present invention provides a switching ring 454 fixed to the adjusting cone 43 between the adjusting cone 43 and the switching gear cylinder 451. An arc-shaped gear ring 455 is slidably mounted on the switching ring 454. A switching gear 456, coaxially fixed to the first adjusting gear 452, meshes with the inner arc surface of the arc-shaped gear ring 455. A switching groove 457 is also provided on the switching ring 454. A switching slider 458, fixed to the arc-shaped gear ring 455, is slidably mounted in the switching groove 457. A switching hole 46 is also provided on the fan main shaft 2. A switching rod 47 is slidably mounted in the switching hole 46. One end of the switching rod 47 extends slidably into the fan main shaft 2 and abuts against the arc-shaped gear ring 455, causing it to mesh with the switching gear 456. The rotation of the switching gear 456 is restricted by the contact between the switching slider 458 and the inner wall of the switching groove 457. Figure 5 As shown, a switching spring 49 is fixedly installed at the end of the switching rod 47 away from the arc-shaped toothed ring 455. One end of the switching spring 49 is provided with a switching screw 48 that is threadedly connected to the fan main shaft 2. In addition, a contact block 459 is fixedly connected at the end of the switching slide 457 near the fan main shaft 2. Both the contact block 459 and the switching slider 458 are magnetic blocks that attract each other.

[0030] Therefore, during the rotation of the fan main shaft 2, centrifugal force is generated inside the fan main shaft 2. Under the action of centrifugal force, the switching rod 47 will retract into the switching hole 46, thereby compressing the switching spring 49. The arc-shaped toothed ring 455, which lacks the contact of the switching rod 47, will slide towards the end of the switching groove 457 away from the switching gear 456 under the mutual attraction of the contact block 459 and the switching slider 458, until it disengages from the meshing state with the switching gear 456. At this time, the switching gear 456 can rotate freely with the first adjusting gear 452, realizing the effect of online adjustment of the fan blade 3. When the fan stops, the switching rod 47, which lacks centrifugal force, no longer compresses the switching spring. Under the action of the switching spring 49, the switching rod 47 will re-abut against the arc-shaped toothed ring 455, causing the inner teeth of the arc-shaped toothed ring 455 to mesh with the switching gear 456, affecting its free rotation. Since the switching gear 456 is coaxially fixed with the first adjusting gear 452, it cannot mesh with the first adjusting gear 452 to rotate when the second adjusting gear 453 rotates. Therefore, under the action of the adjusting disc 41, when the second adjusting gear 453 rotates, it will drive the switching gear cylinder 451 to rotate synchronously and at the same speed through the first adjusting gear 452, thereby increasing the rotation speed of the adjusting cone disc 43 and increasing the efficiency of adjusting the installation angle of the fan blade 3.

[0031] In addition, in some continuous working environments, the fan runs for a long time, so the switching spring 49 is always in a compressed state. Long-term compression will reduce the rebound performance of the switching spring 49. Therefore, during the periodic inspection of the fan, the switching screw 48 can be rotated to check the status of the switching spring 49 so that it can be replaced in time. Therefore, the setting of the switching screw 48 increases the convenience of replacing the switching spring 49 and ensures the normal operation of the adjustment component 4.

[0032] like Figure 1 As shown, a limit box 5 is rotatably installed at the end of the drive end away from the main shaft 2 of the fan. Since the adjustment stability of the fan blade 3 is generally achieved by the locking of the power mechanism, if the power mechanism fails or needs to be disassembled, the fan will have to be temporarily stopped because the fan blade 3 is not fixed, which will have a certain impact on the normal production of the factory. In order to reduce the impact of the fan shutdown on industrial production, we have provided a limit component 6 in the limit box 5 to limit the rotation of the drive rod 42. This ensures that even when the power mechanism is disengaged, the drive rod 42 is not easy to rotate under the action of external force, thus ensuring the installation stability of the fan blade 3, maintaining the operation effect of the fan, and ensuring the industrial needs of industrial production.

[0033] like Figure 6As shown, the limiting box 5 is equipped with a limiting turntable 61 that is coaxially fixed with the drive rod 42. One side of the limiting turntable 61 is tightly attached to the limiting square plate 62, and the surrounding area of ​​the limiting square plate 62 is in contact with the inner wall of the limiting box 5, preventing it from rotating. At the same time, the contact surfaces of the limiting square plate 62 and the limiting turntable 61 are both made of rough material, resulting in a large friction after they are attached. Therefore, if the limiting turntable 61 rotates, the limiting square plate 62 will also rotate. However, since the surrounding area of ​​the limiting square plate 62 is in contact with the inner wall of the limiting box 5, the attachment of the limiting square plate 62 and the limiting turntable 61 restricts the rotation of the limiting turntable 61 and the drive rod 42, ensuring the stability of the fan blade 3 angle.

[0034] like Figure 6 As shown, a limiting sleeve 64 is slidably fitted onto one end of the drive rod 42 that passes through the limiting box 5. A connecting rod 65 is fixedly installed on the end of the limiting sleeve 64 near the limiting box 5, and the end of the connecting rod 65 away from the limiting sleeve 64 slides into the limiting box 5 and is fixedly connected to the limiting square plate 62. Figure 6 It can also be seen that the side of the limiting plate 62 away from the connecting rod 65 is provided with a limiting spring 63 fixed to the inner wall of the limiting box 5. When the power mechanism needs to be installed, the peripheral equipment will move towards the limiting sleeve 64 in order to connect with the drive rod 42. When the limiting sleeve 64 moves, it will drive the limiting plate 62 away from the limiting turntable 61 through the connecting rod 65, compressing the limiting spring 63. Therefore, the limiting turntable 61 can rotate freely to adjust the installation angle of the fan blade 3. When the power mechanism is disassembled, the limiting spring 63 rebounds, thereby controlling the limiting plate 62 to re-fit with the limiting turntable 61, restoring the restriction on the drive rod 42, so that it will not easily rotate.

[0035] like Figure 6 As shown, an indicator dial 66 is provided on one side of the limit box 5. An indicator needle 67 is rotatably mounted in the indicator dial 66. A transmission component 68 is provided between the indicator needle 67 and the drive rod 42 for transmission connection. Therefore, when the drive rod 42 rotates, it will drive the indicator needle 67 to rotate through the transmission component 68, making it easier for the staff to observe the adjustment status of the fan blade 3 more intuitively. In addition, from Figure 6 As can be seen, the indicator dial 66 has two types of scale grooves. This setting makes it convenient for staff to adjust the installation angle of the fan blades 3 when the fan is running or stopped.

[0036] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A wind turbine blade adjustment actuator, characterized in that: include, A fixed frame (1) is provided, on which a fan main shaft (2) is rotatably mounted, and fan blades (3) are provided on the fan main shaft (2); An adjustment component (4) is installed inside the fan main shaft (2) for adjusting the installation angle of the fan blades (3). It includes an adjustment disc (41) that is rotatably installed inside the fan main shaft (2) to provide power for adjusting the installation angle of the fan blades (3) and a drive rod (42) that is coaxially fixed with the adjustment disc (41). The fan main shaft (2) is also provided with a switching component (45) for controlling the output speed of the adjustment disc (41).

2. The wind turbine blade adjustment actuator according to claim 1, characterized in that: An adjusting cone disc (43) is rotatably mounted in the main shaft (2) of the fan. An adjusting bevel gear (44) is meshed on the adjusting cone disc (43) and is fixed coaxially with the fan blade (3). The adjusting bevel gear (44) is rotatably connected to the main shaft (2) of the fan.

3. The wind turbine blade adjustment actuator according to claim 2, characterized in that: The switching component (45) includes a switching gear cylinder (451) coaxially fixed on the side of the adjusting cone disk (43) away from the adjusting bevel gear (44). A first adjusting gear (452) meshing with the switching gear cylinder (451) is rotatably installed in the switching gear cylinder (451). The first adjusting gear (452) meshes externally with a second adjusting gear (453) coaxially fixed with the adjusting disk (41).

4. The wind turbine blade adjustment actuator according to claim 3, characterized in that: A switching ring (454) is provided between the adjusting cone disc (43) and the switching gear cylinder (451) and is fixedly connected to the adjusting cone disc (43). An arc-shaped gear ring (455) is slidably installed on the switching ring (454). A switching gear (456) is meshed on the inner side of the arc-shaped gear ring (455) and is fixedly coaxially with the first adjusting gear (452). A switching groove (457) is provided on the switching ring (454). A switching slider (458) fixedly connected to the arc-shaped gear ring (455) is slidably installed in the switching groove (457).

5. The wind turbine blade adjustment actuator according to claim 4, characterized in that: The switching slide (457) is provided with an abutment block (459) at one end near the inner wall of the fan main shaft (2). The abutment block (459) and the switching slider (458) are both magnetic blocks that attract each other.

6. The wind turbine blade adjustment actuator according to claim 5, characterized in that: A switching hole (46) is provided on the main shaft (2) of the fan, and a switching rod (47) is provided in the switching hole (46). One end of the switching rod (47) slides into the main shaft (2) of the fan and abuts against the outer arc surface of the arc-shaped toothed ring (455).

7. The wind turbine blade adjustment actuator according to claim 6, characterized in that: The other end of the switching rod (47) is provided with a switching screw (48), and the switching screw (48) is threadedly connected to the switching hole (46). A switching spring (49) is provided between the switching rod (47) and the switching screw (48).

8. The wind turbine blade adjustment actuator according to claim 1, characterized in that: A limiting box (5) is rotatably installed at one end of the drive rod (42) away from the main shaft (2) of the fan. The limiting box (5) is provided with a limiting component (6) for limiting the rotation of the drive rod (42). The limiting component (6) includes a limiting turntable (61) located inside the limiting box (5) and coaxially fixed with the drive rod (42). One side of the limiting turntable (61) is attached to a limiting square plate (62), and the limiting square plate (62) is slidably installed inside the limiting box (5). The edge of the limiting square plate (62) abuts against the inner wall of the limiting box (5).

9. The wind turbine blade adjustment actuator according to claim 8, characterized in that: The limiting plate (62) is provided with a limiting spring (63) fixed to the inner wall of the limiting box (5) on one side. The end of the driving rod (42) away from the main shaft (2) of the fan passes through the limiting box (5) and is slidably fitted with a limiting sleeve (64). A connecting rod (65) that is slidably connected to the limiting box (5) is fixedly installed between the limiting sleeve (64) and the limiting plate (62).

10. The wind turbine blade adjustment actuator according to claim 9, characterized in that: The limiting box (5) is provided with an indicator dial (66), and an indicator needle (67) is rotatably installed in the indicator dial (66). On the side of the limiting box (5) opposite to the indicator dial (66), there is a transmission component (68) for the transmission connection between the drive rod (42) and the indicator needle (67).

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