Anti-loosening bolt for wind driven generator

Abstract

The utility model relates to the technical field of anti-loosening bolts, in particular to an anti-loosening bolt for a wind driven generator, which comprises a bolt and a nut, the bolt comprises a head and a screw rod, the nut is in threaded connection with the surface of the screw rod, a sliding groove is arranged on the surface of the screw rod, and a circular ring base plate is sleeved on the surface of the screw rod. And a limiting block is fixedly connected to the inner arc surface of the circular ring base plate, the limiting block is clamped in the sliding groove, an inserting groove is formed in the surface of the circular ring base plate, and a locking mechanism is fixedly connected to the surface of the nut. The bolt and the nut can be fixed through matching of the circular ring base plate and the locking mechanism on the nut, so that connection between the bolt and the nut is firmer, the problem of bolt loosening caused by various complex working conditions such as vibration, high and low load changes and strong wind impact in the operation process of the wind driven generator can be effectively solved, and the service life of the wind driven generator is prolonged. The reliability of bolt connection is greatly improved, and stable connection of all parts of the wind driven generator is ensured.

Description

Technical Field

[0001] This utility model relates to the field of anti-loosening bolt technology, and in particular to an anti-loosening bolt for wind turbine generators. Background Technology

[0002] A bolt is a mechanical part, a type of fastener consisting of a head and a threaded shank (a cylinder with external threads). It is used in conjunction with a nut (which has threads on the inside of a hole) to fasten two parts with through holes. The nut works by using the friction between the nut and the bolt to achieve self-locking. Wind turbines typically operate in harsh natural environments, enduring strong winds, temperature changes, and vibrations generated by their own operation. In such environments, their components rely heavily on bolts for connection.

[0003] However, ordinary bolts are prone to loosening under such complex working conditions, which may lead to serious consequences such as loosening of the connection, increased wear, or even the detachment of key components, affecting the normal operation and service life of the wind turbine. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose an anti-loosening bolt for wind turbines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-loosening bolt for a wind turbine generator, comprising a bolt and a nut, wherein the bolt comprises a head and a threaded rod, the nut is threadedly connected to the surface of the threaded rod, the surface of the threaded rod is provided with a sliding groove, a circular ring washer is fitted onto the surface of the threaded rod, a limit block is fixedly connected to the inner arc surface of the circular ring washer, the limit block is engaged inside the sliding groove, a slot is provided on the surface of the circular ring washer, and a locking mechanism is fixedly connected to the surface of the nut.

[0006] Preferably, the locking mechanism includes a fixing block, the fixing block having a circular groove inside and a circular hole on its surface, the circular hole communicating with the circular groove, a connecting plate slidably connected inside the circular groove, a pin fixedly connected to the surface of the connecting plate, a pull rod fixedly connected to the lower surface of the connecting plate, a handle fixedly connected to the bottom end of the pull rod, a spring sleeved on the surface of the pull rod, and the pin inserted into the slot.

[0007] Preferably, the screw is fitted with a first washer and a second washer, the first washer being located below the head and the second washer being located above the annular pad, and the first and second washers are made of rubber.

[0008] Preferably, a support plate is fixedly connected to the surface of the fixing block, and a slot is formed on the surface of the support plate.

[0009] Preferably, a magnet is fixedly connected to the inner top surface of the circular groove, and the magnet is magnetically connected to the connecting plate.

[0010] Preferably, the head and the nut have the same shape, and both the head and the nut are hexagonal.

[0011] Preferably, the slots are circumferentially distributed on the surface of the annular pad, and the distance between two adjacent slots is equal.

[0012] Preferably, an elastic washer is fitted on the surface of the screw, and the elastic washer is located between the nut and the annular washer.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, the bolt and nut can be fixed by the locking mechanism on the annular washer and the nut, making the connection between the bolt and nut more secure. This can effectively resist the bolt loosening problem caused by various complex working conditions such as vibration, high and low load changes, and strong wind impact during the operation of the wind turbine, greatly improving the reliability of the bolt connection and ensuring the stable connection of each component of the wind turbine.

[0015] 2. In this utility model, the elastic properties of the elastic washer allow for fine adjustment of the distance between the nut and the annular washer, ensuring that the pin can be inserted into the slot at any position of the nut on the screw, thus achieving the purpose of fixing the nut. Attached Figure Description

[0016] Figure 1 A schematic diagram of an anti-loosening bolt for a wind turbine is provided for this utility model;

[0017] Figure 2 An exploded view of an anti-loosening bolt for a wind turbine is provided for this utility model;

[0018] Figure 3 A partial sectional view of an anti-loosening bolt for a wind turbine is provided for this utility model;

[0019] Figure 4 The present invention provides a bottom view of a circular washer plate for an anti-loosening bolt used in a wind turbine generator.

[0020] Legend:

[0021] 1. Screw; 2. Head; 3. Nut; 4. Washer 1; 5. Washer 2; 6. Circular ring pad; 7. Elastic washer; 8. Slide groove; 9. Fixing block; 10. Circular groove; 11. Connecting plate; 12. Pin; 13. Pull rod; 14. Spring; 15. Magnet; 16. Handle; 17. Support plate; 18. Slot; 19. Limiting block; 20. Slot; 21. Circular hole. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a technical solution: an anti-loosening bolt for a wind turbine, including a bolt and a nut 3. The bolt includes a head 2 and a threaded rod 1. The nut 3 is threaded onto the surface of the threaded rod 1. A groove 8 is formed on the surface of the threaded rod 1. A circular ring washer 6 is fitted onto the surface of the threaded rod 1. A limiting block 19 is fixedly connected to the inner arc surface of the circular ring washer 6. The limiting block 19 is locked inside the groove 8. A slot 20 is formed on the surface of the circular ring washer 6. A locking mechanism is fixedly connected to the surface of the nut 3. The locking mechanism includes a fixing block 9. A circular groove 10 is formed inside the fixing block 9. A circular hole 21 is formed on the surface of the fixing block 9. The circular hole 21 communicates with the circular groove 10. A connecting plate 11 is slidably connected inside the circular groove 10. A pin 12 is fixedly connected to the surface of the connecting plate 11. A pull rod 13 is fixedly connected to the lower surface of 11, and a handle 16 is fixedly connected to the bottom end of the pull rod 13. A spring 14 is sleeved on the surface of the pull rod 13. A pin 12 is inserted into the inside of the slot 20. A washer 4 and a washer 5 are sleeved on the surface of the screw 1. The washer 4 is located below the head 2, and the washer 5 is located above the annular pad 6. The washer 4 and the washer 5 are made of rubber. A support plate 17 is fixedly connected to the surface of the fixing block 9. A slot 18 is opened on the surface of the support plate 17. A magnet 15 is fixedly connected to the top surface inside the circular slot 10. The magnet 15 is magnetically connected to the connecting plate 11. The head 2 and the nut 3 have the same shape. Both the head 2 and the nut 3 are hexagonal. The slots 20 are distributed circumferentially on the surface of the annular pad 6, and the distance between two adjacent slots 20 is equal.

[0025] In this embodiment, the annular washer 6 is fitted onto the screw 1, and the limiting block 19 on the annular washer 6 is engaged in the sliding groove 8 on the screw 1. The pin 12 is firmly inserted into the slot 20 with the cooperation of the connecting plate 11 and the spring 14 in the fixing block 9. This achieves the fixation of the bolt and nut 3, making the connection between the bolt and nut 3 more secure. It can effectively resist the bolt loosening problem caused by various complex working conditions such as vibration, high and low load changes, and strong wind impact during the operation of the wind turbine, greatly improving the reliability of the bolt connection and ensuring the stability of the wind turbine. The components are securely connected. By pulling down the handle 16, the handle 16 drives the pull rod 13 to slide inside the circular groove 10, causing the pin 12 to disengage from the slot 20. By rotating the handle 16, the handle 16 is placed on the support plate 17, which facilitates the release of the nut 3 and allows for the later disassembly of the bolt. The hexagonal structure of the bolt head 2 and the nut 3 can prevent slippage when the wrench is turned. Washers 1 4 and 2 5 can prevent corrosion between the nut 3 and the bolt head 2 and the plate when the bolt and nut 3 are used to fix the two plates.

[0026] Example 2: As Figure 2 As shown, an elastic washer 7 is fitted on the surface of the screw 1, and the elastic washer 7 is located between the nut 3 and the annular washer 6.

[0027] In this embodiment, the distance between the nut 3 and the annular washer 6 can be finely adjusted by the elastic properties of the elastic washer 7, so that the pin 12 can be inserted into the slot 20 at any position of the nut 3 on the screw 1, thereby achieving the purpose of fixing the nut 3.

[0028] The working principle of this embodiment is as follows: First, washer 4 is placed on the bolt shank 1. Then, after the bolt shank 1 passes through the mounting holes on the two plates, washer 4, annular washer 6, and elastic washer 7 are sequentially placed on the bolt shank 1. Next, nut 3 is screwed onto the bolt shank 1. Using a wrench, the bolt shank 1 and nut 3 are tightened. The limiting block 19 on the annular washer 6 is engaged in the groove 8 on the bolt 1. Pin 12 is firmly inserted into the slot 20 with the cooperation of the connecting plate 11 and spring 14 within the fixing block 9. The connecting plate 11 and the magnet 15 at the top of the groove 10 are magnetically attracted together, thus fixing the bolt and nut 3. This makes the connection between the bolt and nut 3 more secure and effectively resists the impact of wind turbine operation. The bolt loosening problem caused by various complex working conditions such as vibration, high and low load changes, and strong wind impact is greatly improved, which greatly improves the reliability of bolt connection and ensures that the connection of each component of wind turbine is stable. At the same time, by pulling down the handle 16, the handle 16 drives the pull rod 13 to slide inside the circular groove 10, so that the pin 12 is disengaged from the inside of the slot 20. By rotating the handle 16, the handle 16 is placed in the slot 18 on the support plate 17, which facilitates the release of the nut 3 for later bolt disassembly. The hexagonal structure of the bolt head 2 and the nut 3 can prevent slippage when the wrench is turned. The washers 1 4 and 2 5 can prevent corrosion between the nut 3 and the bolt head 2 and the plate when the bolt and nut 3 are fixed to the two plates.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An anti-loosening bolt for a wind turbine generator, comprising a bolt and a nut (3), characterized in that: The bolt includes a head (2) and a screw (1). The nut (3) is threaded onto the surface of the screw (1). The surface of the screw (1) is provided with a groove (8). The surface of the screw (1) is fitted with a circular ring pad (6). The inner arc surface of the circular ring pad (6) is fixedly connected to a limiting block (19). The limiting block (19) is locked inside the groove (8). The surface of the circular ring pad (6) is provided with a slot (20). The surface of the nut (3) is fixedly connected with a locking mechanism.

2. The anti-loosening bolt for wind turbine generator according to claim 1, characterized in that: The locking mechanism includes a fixing block (9), a circular groove (10) is provided inside the fixing block (9), a circular hole (21) is provided on the surface of the fixing block (9), the circular hole (21) is connected to the circular groove (10), a connecting plate (11) is slidably connected inside the circular groove (10), a pin (12) is fixedly connected to the surface of the connecting plate (11), a pull rod (13) is fixedly connected to the lower surface of the connecting plate (11), a handle (16) is fixedly connected to the bottom end of the pull rod (13), a spring (14) is sleeved on the surface of the pull rod (13), and the pin (12) is inserted into the slot (20).

3. The anti-loosening bolt for wind turbine generators according to claim 1, characterized in that: The screw (1) is fitted with a washer (4) and a washer (5). The washer (4) is located below the head (2), and the washer (5) is located above the annular pad (6). The washer (4) and the washer (5) are made of rubber.

4. The anti-loosening bolt for wind turbine generators according to claim 2, characterized in that: The surface of the fixing block (9) is fixedly connected to a support plate (17), and the surface of the support plate (17) is provided with a slot (18).

5. The anti-loosening bolt for wind turbine generators according to claim 2, characterized in that: A magnet (15) is fixedly connected to the top surface of the inner side of the circular groove (10), and the magnet (15) is magnetically connected to the connecting plate (11).

6. The anti-loosening bolt for wind turbine generator according to claim 1, characterized in that: The head (2) and the nut (3) have the same shape, and both the head (2) and the nut (3) are hexagonal.

7. The anti-loosening bolt for wind turbine generator according to claim 1, characterized in that: The slots (20) are distributed circumferentially on the surface of the annular pad (6), and the distance between two adjacent slots (20) is equal.

8. The anti-loosening bolt for wind turbine generators according to claim 1, characterized in that: An elastic washer (7) is fitted on the surface of the screw (1), and the elastic washer (7) is located between the nut (3) and the annular washer (6).

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