Blade locking device

Abstract

The utility model relates to the technical field of wind generating set blade locking, in particular to a blade locking device which comprises a fixed bottom plate detachably installed on a hub of a wind generating set. The left side of the fixed bottom plate extends outwards to form a protruding block, a limiting through groove is formed in the protruding block, and the limiting through groove penetrates through the protruding block. A sleeve is fixed to the lower portion of the protruding block, a locking shaft pin is clamped in the sleeve in a sliding mode, and a first positioning hole and a second positioning hole are sequentially formed in the locking shaft pin from top to bottom. The blade locking device disclosed by the utility model is simple and convenient in locking operation.

Description

Technical Field

[0001] The utility model relates to the technical field of blade locking of wind turbines, and particularly relates to a blade locking device. Background Art

[0002] The blade locking device of a wind turbine is a key safety component for a wind turbine. Its main function is to lock the position of the blade under specific circumstances (such as maintenance, installation, transportation, or emergency shutdown) to prevent the blade from rotating due to external forces, thereby ensuring the safety and stability of the wind turbine. When the existing blade locking device of a wind turbine is locked, its operation and installation are cumbersome. Summary of the Utility Model

[0003] Objective of the utility model: The utility model provides a blade locking device with simple and convenient locking operation.

[0004] To achieve the above objective, the technical solution of the utility model is as follows:

[0005] A blade locking device includes a fixed bottom plate, and the fixed bottom plate is detachably installed on the hub of a wind turbine;

[0006] A raised block extends outward from the left side of the fixed bottom plate, and a limiting through groove is formed in the raised block, and the limiting through groove penetrates the raised block;

[0007] A sleeve is fixed below the raised block, and a locking shaft pin is slidably clamped in the sleeve, and a first positioning hole and a second positioning hole are sequentially formed in the locking shaft pin from top to bottom;

[0008] A third positioning hole adapted to the first positioning hole and the second positioning hole is formed in the right side of the sleeve, the third positioning hole extends to the left and penetrates the sleeve, and a positioning device is arranged on the right side of the third positioning hole.

[0009] As an improvement: A first sliding through groove is formed in the rear side wall of the sleeve, and a second sliding through groove is formed in its front side wall;

[0010] A first sliding block is fixed on the rear side wall of the locking shaft pin, and a second sliding block is formed in its front side wall.

[0011] As an improvement: The first sliding block is slidably clamped in the first sliding through groove, and the second sliding block is slidably clamped in the second sliding through groove.

[0012] As an improvement: A first limiting spring is arranged at the bottom of the sleeve, one end of the first limiting spring is fixed at the bottom of the sleeve, and the other end is fixed on the locking shaft pin.

[0013] As an improvement: The positioning device includes a positioning insertion rod, which is movably inserted into the positioning cylinder. A limiting block is provided on the positioning insertion rod, and the limiting block is slidably clamped inside the positioning cylinder;

[0014] A second limiting spring is provided between the limiting block and the positioning cylinder. One end of the second limiting spring is fixed on the limiting block, and the other end is fixed on the right inner wall of the positioning cylinder;

[0015] The left end of the positioning insertion rod can be inserted into the first positioning hole through the third positioning hole.

[0016] As an improvement: The right end of the positioning insertion rod is located outside the positioning cylinder, and an adjusting pull plate is provided at this end.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. Pull out the positioning insertion rod from the first positioning hole. Through the first sliding block and the second sliding block, move the locking shaft slightly upward to the specified position. At this time, the locking shaft is slightly clamped in the gear of the blade pitch system. Manually release the adjusting pull plate. Under the action of the second limiting spring, the positioning insertion rod is inserted into the second positioning hole through the third positioning hole to realize the limiting of the locking shaft. Through the above operations, the locking of the blade can be quickly realized, and the operation is simple and convenient;

[0019] 2. The first limiting spring can realize the quick reset of the locking shaft, thereby improving the operation efficiency;

[0020] 3. The setting of the adjusting pull plate facilitates the pulling of the positioning insertion rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art.

[0022] Figure 1 Schematic diagram of the overall structure of a blade locking device Figure 1 ;

[0023] Figure 2 Schematic diagram of the overall structure of a blade locking device Figure 2 ;

[0024] Figure 3 Schematic cross-sectional structure diagram of a blade locking device;

[0025] Figure 4 For Figure 3 Schematic diagram of part A structure in

[0026] Wherein: 1. Fixed bottom plate; 2. Protruding block; 3. Limit through groove; 4. Sleeve; 5. Locking shaft pin; 6. First positioning hole; 7. Second positioning hole; 8. Third positioning hole; 9. First sliding through groove; 10. Second sliding through groove; 11. First sliding block; 12. Second sliding block; 13. First limiting spring; 14. Positioning insertion rod; 15. Positioning cylinder; 16. Limiting block; 17. Second limiting spring; 18. Adjusting pull plate. Specific embodiments

[0027] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 - 4 , a blade locking device, including a fixed bottom plate 1, and the fixed bottom plate 1 is detachably installed on the hub of a wind turbine generator; a protruding block 2 extends outward from the left side of the fixed bottom plate 1, and a limit through groove 3 is opened on the protruding block 2, and the limit through groove 3 penetrates the protruding block 2; a sleeve 4 is fixed below the protruding block 2, a locking shaft pin 5 is slidably clamped in the sleeve 4, and a first positioning hole 6 and a second positioning hole 7 are successively opened on the locking shaft pin 5 from top to bottom; a third positioning hole 8 adapted to the first positioning hole 6 and the second positioning hole 7 is opened on the right side of the sleeve 4, the third positioning hole 8 extends to the left and penetrates the sleeve 4, and a positioning device is provided on the right side of the third positioning hole 8.

[0029] A first sliding through groove 9 is opened on the rear side wall of the sleeve 4, and a second sliding through groove 10 is opened on its front side wall; a first sliding block 11 is fixed on the rear side wall of the locking shaft pin 5, and a second sliding block 12 is opened on its front side wall. The first sliding block 11 is slidably clamped in the first sliding through groove 9, and the second sliding block 12 is slidably clamped in the second sliding through groove 10.

[0030] A first limiting spring 13 is provided at the bottom of the sleeve 4, one end of the first limiting spring 13 is fixed to the bottom of the sleeve 4, and the other end is fixed to the locking shaft pin 5. In this embodiment, the first limiting spring 13 can realize the quick reset of the locking shaft pin 5, thereby improving the operation efficiency;

[0031] The positioning device includes a positioning insertion rod 14, the positioning insertion rod 14 is movably inserted into the inside of the positioning cylinder 15, a limiting block 16 is provided on the positioning insertion rod 14, and the limiting block 16 is slidably clamped in the inside of the positioning cylinder 15; a second limiting spring 17 is provided between the limiting block 16 and the positioning cylinder 15, one end of the second limiting spring 17 is fixed to the limiting block 16, and the other end is fixed to the right inner wall of the positioning cylinder 15; the left end of the positioning insertion rod 14 can be inserted into the inside of the first positioning hole 6 through the third positioning hole 8.

[0032] The right end of the positioning insertion rod 14 is located outside the positioning cylinder 15, and an adjusting pull plate 18 is provided at this end. In this embodiment, the setting of the adjusting pull plate 18 facilitates the pulling of the positioning insertion rod 14.

[0033] Locking process: Pull out the positioning insertion rod 14 from the first positioning hole 6 through the adjusting pull plate 18, and then move the locking shaft pin 5 upward through the first sliding block 11 and the second sliding block 12. At this time, the first sliding block 11 and the second sliding block 12 respectively abut against the top of the first sliding groove 9 and the second sliding groove 10, and the locking shaft pin 5 is clamped in the gear of the blade pitch system.

[0034] At this time, the second positioning hole 7 corresponds to the third positioning hole 8. Manually release the adjusting pull plate 18. Under the action of the second limiting spring 17, the positioning insertion rod 14 automatically inserts into the second positioning hole 7 through the third positioning hole 8 to limit the locking shaft pin 5.

[0035] After operations such as maintenance, installation, and transportation are completed, pull out the positioning insertion rod 14 from the second positioning hole 7 through the adjusting pull plate 18. Under the action of the first limiting spring 13, the locking shaft pin 5 quickly moves downward to achieve the reset operation. At this time, manually release the adjusting pull plate 18. Under the action of the second limiting spring 17, the positioning insertion rod 14 automatically inserts into the first positioning hole 6 through the third positioning hole 8, thereby completing the re-locking of the locking shaft pin 5. This is the locking under normal conditions and can prevent the locking shaft pin 5 from moving.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that; it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A blade locking device, characterized in that: It includes a fixed bottom plate, which is detachably mounted on the hub of the wind turbine generator set; A protruding block is extended outwardly from the left side of the fixed bottom plate, a limiting through groove is formed on the protruding block, and the limiting through groove passes through the protruding block; A sleeve is fixed below the protruding block, a locking shaft is slidably clamped in the sleeve, and a first positioning hole and a second positioning hole are sequentially opened on the locking shaft from top to bottom; A third positioning hole matched with the first positioning hole and the second positioning hole is opened on the right side of the sleeve, the third positioning hole extends to the left side and passes through the sleeve, and a positioning device is provided on the right side of the third positioning hole.

2. The blade locking device according to claim 1, characterized in that: A first sliding through groove is formed on the rear side wall of the sleeve, and a second sliding through groove is formed on the front side wall thereof; A first sliding block is fixed on the rear side wall of the locking shaft, and a second sliding block is provided on the front side wall.

3. The blade locking device according to claim 2, characterized in that: The first sliding block is slidably disposed in the first sliding through groove, and the second sliding block is slidably disposed in the second sliding through groove.

4. The blade locking device according to claim 1, characterized in that: A first limit spring is arranged at the bottom of the sleeve, one end of the first limit spring is fixed to the bottom of the sleeve, and the other end of the first limit spring is fixed on the locking shaft.

5. The blade locking device according to claim 1, characterized in that: The positioning device comprises a positioning plug rod, the positioning plug rod is movably inserted in the interior of the positioning tube, a limit block is arranged on the positioning plug rod, and the limit block is slidably clamped in the interior of the positioning tube; A second limiting spring is provided between the limiting block and the positioning cylinder, one end of the second limiting spring is fixed on the limiting block, and the other end thereof is fixed on the right inner wall of the positioning cylinder; The left end of the positioning plug rod can be inserted into the first positioning hole through the third positioning hole.

6. The blade locking device according to claim 5, characterized in that: The right end of the positioning plug rod is located outside the positioning cylinder, and an adjusting pull plate is arranged on the end.

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