A wind turbine blade locking device

Abstract

This utility model discloses a wind turbine blade locking device, relating to the field of turbine blade limiting technology. The device includes a hub, with multiple limiting pins arranged in a circular array fixedly connected to the outer surface of the hub. A locking assembly is provided on one side of the hub, and a limiting assembly is provided on the outer surface of the hub. The limiting assembly includes a sliding plate, with multiple pins fixedly connected to one side of the sliding plate. A limiting plate is fixedly connected to one side of the hub, and a pull plate is fixedly connected to one side of the sliding plate. A slider is symmetrically fixedly connected to the bottom surface of the sliding plate. A connecting rod movably passes through one side of the fixing block, and a pull block is fixedly connected to the end of the connecting rod. A limiting groove for use with the pull block is provided on one side of the hub. A spring is sleeved on the outer surface of the connecting rod. This utility model effectively locks the blades and prevents them from accidentally rotating during super typhoons.

Description

Technical Field

[0001] This utility model relates to the field of generator blade limiting technology, specifically a wind turbine blade locking device. Background Technology

[0002] Wind turbine blades are the core components of wind power equipment. Their design, materials, and performance directly affect the power generation efficiency, reliability, and service life of the unit. Wind turbine blades are complex systems that integrate aerodynamics, materials science, and structural engineering. Their technological advancements directly drive the wind power industry towards higher efficiency and lower costs. By capturing wind energy to generate aerodynamic lift, the blades rotate, which in turn drives the generator rotor to rotate, converting wind energy into mechanical energy and ultimately into electrical energy.

[0003] However, existing technologies still have many defects in some similar structures when used in practice. For example, abnormal blade conditions can interfere with the unit's speed and power control logic, causing the pitch and yaw systems to malfunction, further exacerbating equipment malfunctions. At the same time, if the blades rotate unexpectedly during super typhoons, they will bear huge aerodynamic loads when rotating out of control, causing safety hazards.

[0004] To address the aforementioned problems, the inventors proposed a wind turbine blade locking device to solve these issues. Utility Model Content

[0005] To address the problems of failing to lock the blades and preventing them from rotating unexpectedly during super typhoons, the purpose of this invention is to provide a blade locking device for wind turbine generators.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wind turbine blade locking device, including a hub, a plurality of limiting pins arranged in a circular array are fixedly connected to the outer surface of the hub, a snap-fit ​​component is provided on one side of the hub, a limiting component is provided on the outer surface of the hub, the limiting component includes a sliding plate, a plurality of pins are fixedly connected to one side of the sliding plate, a limiting plate is fixedly connected to one side of the hub, a pull plate is fixedly connected to one side of the sliding plate, and a slider is symmetrically fixedly connected to the bottom surface of the sliding plate.

[0007] As a preferred technical solution of this application, the snap-fit ​​assembly includes a fixing block, a connecting rod movably passing through one side of the fixing block, a pull block fixedly connected to the end of the connecting rod, a limiting groove for cooperating with the pull block being opened on one side of the wheel hub, a spring being sleeved on the outer surface of the connecting rod, an insert rod being fixedly connected to one side of the pull block, the outer surface of the insert rod extending into the pull plate, and connecting blocks being fixedly connected to both ends of the pull plate.

[0008] Using the above technical solution, pulling the pull block causes the connecting rod to move outward against the spring force, disengaging the pull block from the limiting groove. At the same time, the insert rod is pulled out from the pull plate, bringing the connecting block into contact with the wheel hub surface. The bolt is screwed in through the thread to fix the connecting block on the wheel hub. Then, the pull block is released, the spring returns to its original position, and the pull block is pushed back into the limiting groove. The insert rod is inserted into the pull plate, restricting the movement of the sliding plate and preventing the pin from accidentally coming out. This ensures that the locking state of the limiting component is stable and can effectively prevent the blade from rotating unexpectedly during a super typhoon.

[0009] As a preferred technical solution of this application, the pin is used in conjunction with the limiting pin.

[0010] The above technical solution involves inserting a pin into the slot of a limiting pin to restrict the rotation of the wheel hub.

[0011] As a preferred technical solution of this application, the end of the pin passes through the limiting plate.

[0012] Using the above technical solution, the pin will enter the limiting plate.

[0013] As a preferred technical solution of this application, a groove for use with a slider is provided on one side of the wheel hub.

[0014] With the above technical solution, the slider slides within the inner wall of the groove.

[0015] As a preferred technical solution of this application, the two ends of the spring are fixedly connected to the pull block and the fixing block, respectively.

[0016] Using the above technical solution, the pull block is released, the spring returns to its original position, and the pull block is pushed back into the limiting groove.

[0017] As a preferred technical solution of this application, the top surface of the connecting block is threaded with a bolt, and the end of the bolt extends into the wheel hub.

[0018] The above technical solution uses threaded bolts to fix the connecting block to the hub.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model can be used to pull the pull plate to drive the slide plate to slide along the slide groove. The pin on the slide plate moves accordingly. Since the pin and the limit pin are in corresponding cooperation, when the slide plate slides to a certain position, the pin is inserted into the slot of the limit pin, which restricts the rotation of the hub and mechanically locks the blade, thereby effectively achieving the purpose of locking the blade.

[0021] 2. This utility model allows the connecting block to be attached to the wheel hub surface by pulling out the insert rod from the pull plate, and then fixing the connecting block to the wheel hub by screwing in the bolt. After that, the pull block is released, the spring returns to its original position, and the pull block is pushed back into the limiting groove. The insert rod is inserted into the pull plate to restrict the movement of the slide plate, prevent the pin from accidentally coming out, and ensure that the locking state of the limiting component is stable. This effectively prevents the blade from accidentally rotating during a super typhoon. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the limiting component of this utility model.

[0025] Figure 3 This is a schematic diagram of the snap-fit ​​assembly of this utility model.

[0026] Figure 4 This is a schematic diagram of the snap-fit ​​assembly of this utility model.

[0027] In the diagram: 1. Wheel hub; 2. Limit pin; 3. Snap-fit ​​assembly; 4. Limit assembly; 31. Fixing block; 32. Connecting rod; 33. Pull block; 34. Limit groove; 35. Spring; 36. Insert rod; 37. Connecting block; 38. Bolt; 41. Slide plate; 42. Pin; 43. Limit plate; 44. Pull plate; 45. Slider; 46. Slide groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: Figure 1-4 As shown, this utility model provides a wind turbine blade locking device, including a hub 1, a plurality of limiting pins 2 arranged in a ring array are fixedly connected to the outer surface of the hub 1, a snap-fit ​​component 3 is provided on one side of the hub 1, and a limiting component 4 is provided on the outer surface of the hub 1.

[0030] The limiting component 4 includes a slide plate 41. A plurality of pins 42 are fixedly connected to one side of the slide plate 41. The pins 42 are used in conjunction with the limiting pins 2. A limiting plate 43 is fixedly connected to one side of the wheel hub 1. The ends of the pins 42 pass through the limiting plate 43. A pull plate 44 is fixedly connected to one side of the slide plate 41. A slider 45 is symmetrically fixedly connected to the bottom surface of the slide plate 41. A groove 46 for use with the slider 45 is provided on one side of the wheel hub 1.

[0031] When the slide plate 41 slides to a certain position, the pin 42 is inserted into the slot of the limit pin 2, which restricts the rotation of the hub 1 and mechanically locks the blade, effectively locking the blade.

[0032] The snap-fit ​​assembly 3 includes a fixing block 31, a connecting rod 32 that movably passes through one side of the fixing block 31, a pull block 33 that is fixedly connected to the end of the connecting rod 32, a limiting groove 34 that is used in conjunction with the pull block 33 that is opened on one side of the wheel hub 1, a spring 35 that is sleeved on the outer surface of the connecting rod 32, and the two ends of the spring 35 that are fixedly connected to the pull block 33 and the fixing block 31 respectively, an insert rod 36 that is fixedly connected to one side of the pull block 33, the outer surface of the insert rod 36 that extends into the pull plate 44, a connecting block 37 that is fixedly connected to both ends of the pull plate 44, a bolt 38 that is threaded into the top surface of the connecting block 37, and the end of the bolt 38 that extends into the wheel hub 1.

[0033] Insert rod 36 into pull plate 44 to restrict the movement of slide plate 41, prevent pin 42 from accidentally coming out, and ensure that the locking state of limit component 4 is stable, which can effectively prevent the blade from accidentally rotating during the passage of super typhoon.

[0034] The working principle of a wind turbine blade locking device according to an embodiment of this application is as follows: the hub 1 is the core component, and the limiting pins 2 distributed in a ring array on the outer surface provide a locking position for subsequent locking. The fixing block 31 of the locking component 3 is pre-installed on one side of the hub 1. The spring 35 is sleeved on the outside of the connecting rod 32 and its two ends are respectively connected to the pull block 33 and the fixing block 31, and is in a naturally extended state. In the limiting component 4, the sliding plate 41 slides with the sliding groove 46 on the side of the hub 1 through the slider 45. The pin 42 passes through the limiting plate 43. Initially, the pin 42 does not contact the limiting pins 2.

[0035] When it is necessary to lock the blade, pull the pull plate 44 to drive the slide plate 41 to slide along the slide groove 46. The pin 42 on the slide plate 41 moves accordingly. Since the pin 42 and the limit pin 2 are correspondingly engaged, when the slide plate 41 slides to a certain position, the pin 42 is inserted into the slot of the limit pin 2, which restricts the rotation of the hub 1 and mechanically locks the blade, thereby effectively achieving the purpose of locking the blade.

[0036] Pulling the pull block 33 causes the connecting rod 32 to move outward against the elastic force of the spring 35, disengaging the pull block 33 from the limiting groove 34. At the same time, the insert rod 36 is pulled out from the pull plate 44, bringing the connecting block 37 into contact with the surface of the hub 1. The bolt 38 is screwed in to fix the connecting block 37 onto the hub 1. Then, the pull block 33 is released, the spring 35 returns to its original position, and the pull block 33 is pushed back into the limiting groove 34. The insert rod 36 is inserted into the pull plate 44, restricting the movement of the slide plate 41 and preventing the pin 42 from accidentally coming out. This ensures that the locking state of the limiting component 4 is stable, thereby effectively preventing the blade from rotating unexpectedly during a super typhoon.

[0037] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A wind turbine blade locking device, comprising a hub (1), characterized in that: The outer surface of the wheel hub (1) is fixedly connected with a plurality of limiting pins (2) arranged in a ring array. A snap-fit ​​component (3) is provided on one side of the wheel hub (1), and a limiting component (4) is provided on the outer surface of the wheel hub (1). The limiting component (4) includes a slide plate (41), a plurality of pins (42) are fixedly connected to one side of the slide plate (41), a limiting plate (43) is fixedly connected to one side of the wheel hub (1), a pull plate (44) is fixedly connected to one side of the slide plate (41), and a slider (45) is symmetrically fixedly connected to the bottom surface of the slide plate (41).

2. The wind turbine blade locking device as described in claim 1, characterized in that: The snap-fit ​​assembly (3) includes a fixing block (31), a connecting rod (32) is movably passed through one side of the fixing block (31), a pull block (33) is fixedly connected to the end of the connecting rod (32), a limiting groove (34) is provided on one side of the wheel hub (1) to cooperate with the pull block (33), a spring (35) is sleeved on the outer surface of the connecting rod (32), an insert rod (36) is fixedly connected to one side of the pull block (33), the outer surface of the insert rod (36) extends into the pull plate (44), and a connecting block (37) is fixedly connected to both ends of the pull plate (44).

3. The wind turbine blade locking device as described in claim 1, characterized in that: The pin (42) is used in conjunction with the limiting pin (2).

4. The wind turbine blade locking device as described in claim 1, characterized in that: The end of the pin (42) is movably connected to the limiting plate (43).

5. The wind turbine blade locking device as described in claim 1, characterized in that: The wheel hub (1) has a groove (46) on one side for use with the slider (45).

6. The wind turbine blade locking device as described in claim 2, characterized in that: The two ends of the spring (35) are fixedly connected to the pull block (33) and the fixing block (31) respectively.

7. A wind turbine blade locking device as described in claim 2, characterized in that: The top surface of the connecting block (37) is threaded with a bolt (38), the end of which extends into the hub (1).

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