Blade locking mechanism of wind driven generator

Abstract

The utility model relates to the technical field of wind power generation, in particular to a blade locking mechanism of a wind driven generator, which comprises a hub web body, a limit base is connected to the middle upper position of the hub web body through bolts, and a guide sleeve is fixedly connected to the middle upper position of the limit base. A movable bolt body is inserted into the guide sleeve, one end of the movable bolt body is fixedly connected with an adapter clamping plate, and steering supports are fixedly connected to the two sides of the bottom end of the adapter clamping plate respectively. According to the blade locking mechanism of the wind driven generator, when the blade needs to be locked, the blade of the wind driven generator can be locked multiple times through the movable plug pin body and the set of inserting rods, the locking effect of the locking mechanism is improved, and the safety of the whole wind driven generator set is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a blade locking mechanism of a wind power generator. Background Art

[0002] Most coastal areas in China use wind turbines to increase the power generation of local power plants. Considering that coastal areas are very vulnerable to typhoons, it is necessary to ensure that the existing wind turbines have typhoon resistance. When a typhoon comes, the entire wind turbine will use a blade locking mechanism to lock the generator blades.

[0003] When the existing blade locking mechanism is in use, it generally utilizes the centering engagement between the latch and the block to achieve the locking of the blades. However, considering that most of the existing locking structures are one-time locking, in the event of a super typhoon, the blades with a large knob torque may still rotate unexpectedly, resulting in a poor locking effect. Therefore, a blade locking mechanism for a wind turbine is proposed to address the above problem. Utility Model Content

[0004] The utility model aims to provide a blade locking mechanism for a wind turbine generator, so as to solve the problem that most of the existing locking structures mentioned in the background art are one-time locking and have poor locking effect.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blade locking mechanism for a wind turbine generator comprises a hub web body, a limiting base is connected to the middle and upper position of the hub web body by bolts, and a guide sleeve is fixedly connected to the middle and upper position of the limiting base, a movable latch body is inserted into the guide sleeve, and one end of the movable latch body is fixedly connected to an adapter card, and the two sides of the bottom end of the adapter card are respectively fixedly connected to steering brackets, an auxiliary bracket is fixedly connected to the lower position of the limiting base, moving blocks are respectively slidably connected to the two sides of the vertical end of the auxiliary bracket, and a guide rod is slidably connected to one side of the moving block, a spring is sleeved on the outside of the guide rod, and an insertion rod is fixedly connected to the other side of the moving block, auxiliary sleeves are respectively fixedly connected to the middle positions of the two sides of the guide sleeve, and a locking block body is provided directly above the movable latch body.

[0007] Preferably, an electric push rod is provided at the middle position of the inner side of the auxiliary bracket, and the movable end of the electric push rod is connected to one end of the adapter card, and the auxiliary bracket is arranged in a "U"-shaped structure.

[0008] Preferably, the auxiliary sleeve and the insertion rod are slidably connected, and a group of insertion rods are provided. Slots matching the sizes of the movable latch body and the insertion rod are respectively provided in the middle of the front end face and on both sides of the front end face of the locking block body. The insertion rod and the movable latch body are adjacent to each other on the left and right.

[0009] Preferably, the guide rod is embedded in the vertical end of the auxiliary bracket, the upper and lower ends of the spring are respectively connected to the auxiliary bracket and the moving block, and the moving block and the horizontal end of the steering bracket are adjacently arranged in front and rear positions.

[0010] Preferably, the steering bracket has an "L"-shaped structure, and side sliders are fixedly connected to the upper and lower positions of one side of the horizontal end of the steering bracket, and the upper and lower ends of the vertical end of the auxiliary bracket are provided with sliding grooves that are slidably connected to the two groups of side sliders.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by providing the movable latch body, steering bracket, moving block, locking block body and insertion rod, the blade locking mechanism of the wind turbine can be conveniently used to lock the blades when it is necessary to lock the blades. The movable latch body that is aligned with the locking block body can be used for primary locking first, and then a group of insertion rods that are pushed outward by the thrust force can be used for secondary locking by being aligned with the locking block body to prevent the blades with large knob torque from accidentally rotating during typhoons. Compared with the traditional one-time locking mechanism, the structure with secondary locking effect can fully improve the locking effect of the locking mechanism while also ensuring the safety of the entire wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 This is a schematic diagram of the installation structure of the locking block body of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation structure of the mobile block of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the steering bracket of the utility model.

[0018] In the figure: 1. Hub web body; 2. Limiting base; 3. Guide sleeve; 4. Movable latch body; 5. Adapter card; 6. Auxiliary bracket; 7. Auxiliary sleeve; 8. Insert rod; 9. Locking block body; 10. Steering bracket; 11. Side slide block; 12. Moving block; 13. Guide rod; 14. Spring; 15. Electric push rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 , the utility model provides a technical solution:

[0021] A blade locking mechanism for a wind turbine comprises a hub web body 1, a limiting base 2 is connected to the hub web body 1 at a middle and upper position by bolts, and a guide sleeve 3 is fixedly connected to the middle and upper position of the limiting base 2, a movable latch body 4 is inserted inside the guide sleeve 3, and an adapter card 5 is fixedly connected to one end of the movable latch body 4, and steering brackets 10 are fixedly connected to both sides of the bottom end of the adapter card 5, an auxiliary bracket 6 is fixedly connected to the lower position of the limiting base 2, and moving blocks 12 are slidably connected to both sides of the vertical end of the auxiliary bracket 6, and a guide rod 13 is slidably connected to one side of the moving block 12, a spring 14 is sleeved on the outside of the guide rod 13, and an insertion rod 8 is fixedly connected to the other side of the moving block 12, auxiliary sleeves 7 are fixedly connected to the middle positions of both sides of the guide sleeve 3, and a locking block body 9 is provided directly above the movable latch body 4.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, an electric push rod 15 is provided at the middle position of the inner side of the auxiliary bracket 6, and the movable end of the electric push rod 15 is connected to one end of the adapter card 5. The auxiliary bracket 6 is in a "U"-shaped structure. When the electric push rod 15 is fixedly installed, the "U"-shaped auxiliary bracket 6 arranged adjacent to the guide sleeve 3 in front and back mainly plays the role of assisting the electric push rod 15 in limited installation; the auxiliary sleeve 7 and the plug rod 8 are slidably connected, and the plug rod 8 is provided in a group. The middle part of the front end face of the locking block body 9 and the positions on both sides of the front end face are respectively provided with slots that match the sizes of the movable latch body 4 and the plug rod 8. The left and right positions of the plug rod 8 and the movable latch body 4 are adjacent. It is arranged that when a group of insertion rods 8 are pushed outward by the thrust, a group of auxiliary sleeves 7 fixed on both sides of the guide sleeve 3 will use the sliding connection setting between themselves and the insertion rod 8 to provide guiding assistance; the guide rod 13 is embedded in the vertical end of the auxiliary bracket 6, and the upper and lower ends of the spring 14 are respectively connected to the auxiliary bracket 6 and the moving block 12. The front and rear positions between the moving block 12 and the horizontal end of the steering bracket 10 are adjacent to each other. When the moving block 12 is pushed by the steering bracket 10 to squeeze the spring 14, the spring 14 will apply the generated rebound force to the moving block 12, so that the moving block 12 can rebound and reset with the insertion rod 8 later.

[0023] like Figure 2 , Figure 4 and Figure 5 As shown, the steering bracket 10 has an L-shaped structure, and side sliders 11 are fixedly connected to the upper and lower positions of one side of the horizontal end of the steering bracket 10, and the upper and lower ends of the vertical end of the auxiliary bracket 6 are provided with sliding grooves that are slidably connected to the two groups of side sliders 11. When one group of steering brackets 10 is started by the electric push rod 15 and pushes the moving block 12 from front to back, the two groups of side sliders 11 will slide back and forth along the inside of the sliding groove, thereby guiding and limiting the movement of the steering bracket 10.

[0024] Working process: before using the blade mechanism of the wind turbine, the locking block body 9 can be fixedly installed on the pitch bearing by means of bolt fixings. When the blades of the wind turbine need to be locked during a typhoon, as the pitch bearing rotates into place with the locking block body 9, under the connection setting of the auxiliary bracket 6, the electric push rod 15 is started and the movable latch body 4 is pushed outward through the adapter card plate 5, so that it is pre-fitted and inserted into the hole groove reserved in the middle position of the locking block body 9. The entire blade locking mechanism will be locked once, and at the same time, a group of auxiliary brackets 6 pushed out together with the adapter card plate 5 will slide to a certain position and squeeze the moving block 12, so that it can push the plug rod 8 outward so that the plug rod 8 can fit into the hole grooves reserved on both sides of the locking block body 9, thereby enabling the entire blade locking mechanism to be reinforced and locked for the second time.

[0025] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade locking mechanism for a wind turbine, comprising a hub web body (1), characterized in that: The hub web body (1) is connected to a limiting base (2) at a middle upper position by bolts, and a guide sleeve (3) is fixedly connected to the limiting base (2) at a middle upper position, a movable latch body (4) is inserted inside the guide sleeve (3), and one end of the movable latch body (4) is fixedly connected to an adapter card (5), and the bottom two sides of the adapter card (5) are respectively fixedly connected to a steering bracket (10), and the lower position of the limiting base (2) is fixedly connected to an auxiliary bracket (6), and the vertical end of the auxiliary bracket (6) is respectively slidably connected to a moving block (12), and one side of the moving block (12) is slidably connected to a guide rod (13), the outer side of the guide rod (13) is sleeved with a spring (14), and the other side of the moving block (12) is fixedly connected to an insertion rod (8), and the middle positions of both sides of the guide sleeve (3) are respectively fixedly connected to auxiliary sleeves (7), and a locking block body (9) is provided directly above the movable latch body (4).

2. A blade locking mechanism for a wind turbine according to claim 1, characterized in that: An electric push rod (15) is provided at the middle position of the inner side of the auxiliary bracket (6), and the movable end of the electric push rod (15) is connected to one end of the adapter card (5). The auxiliary bracket (6) is arranged in a "U"-shaped structure.

3. The blade locking mechanism of a wind turbine according to claim 1, characterized in that: The auxiliary sleeve (7) and the insertion rod (8) are slidably connected, and a group of the insertion rods (8) is provided. The middle part of the front end face and both sides of the front end face of the locking block body (9) are respectively provided with slots that match the sizes of the movable latch body (4) and the insertion rod (8). The insertion rod (8) and the movable latch body (4) are adjacently arranged at left and right positions.

4. The blade locking mechanism of a wind turbine according to claim 1, characterized in that: The guide rod (13) is embedded in the vertical end of the auxiliary bracket (6), and the upper and lower ends of the spring (14) are respectively connected to the auxiliary bracket (6) and the moving block (12), and the moving block (12) and the horizontal end of the steering bracket (10) are arranged adjacent to each other in front and rear positions.

5. The blade locking mechanism of a wind turbine according to claim 1, characterized in that: The steering bracket (10) is arranged in an "L"-shaped structure, and side sliders (11) are fixedly connected to the upper and lower positions of one side of the horizontal end of the steering bracket (10), and the upper and lower ends of the vertical end of the auxiliary bracket (6) are provided with sliding grooves that are slidably connected to the two groups of side sliders (11).

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