Fan blade broken bolt extraction device

Abstract

The utility model provides a kind of fan blade fracture bolt extraction equipment, it belongs to fan maintenance field, it includes: drilling machine;Positioning assembly, the positioning assembly includes positioning plate, adjusting disc, multiple movable columns and multiple positioning columns, through-hole is set in the positioning plate, the inside of the through-hole is provided with multiple movable holes, the movable column is movably arranged in movable hole, the positioning column is fixedly arranged in the outer end of movable column, the movable hole is provided with slide hole in the top of positioning plate, slide column is fixedly arranged on the movable column, the slide column is movably arranged and passes through slide hole, the adjusting disc is rotatably arranged on positioning plate, adjusting disc is provided with multiple adjusting holes and passes through.The utility model sets up positioning assembly, can be accurately drilled to bolt, improve practicality;Also set has buckle subassembly, can fix positioning column, ensure the stability of positioning.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine maintenance technology, and in particular to a device for removing broken bolts from wind turbine blades. Background Technology

[0002] With prolonged use, the bolts securing the blades of wind turbines are prone to breakage, posing a significant threat to the safe operation of the turbine. Wind turbine bolt breakage generally falls into two categories: one, the fracture surface is flush with the pitch bearing flange face; two, the fracture surface is deep within the bolt hole on the pitch bearing flange, i.e., deep within the threaded hole. The first situation is relatively easy to handle. However, in the second situation, because the bolt breaks deep within the bearing flange bolt hole, it cannot be removed using conventional methods due to the lack of specialized tools.

[0003] Drilling a hole in the center of the top surface of the broken bolt is a crucial step in the repair process. However, the operator's field of vision is limited, making it difficult to accurately locate the drilling point of the bolt inside the hole. Furthermore, the top surface of the broken bolt often has an inclined surface or residual protrusions due to the irregular fracture shape, which further increases the difficulty of centering, easily leading to drill bit slippage or drilling deviation, affecting the subsequent repair effect, and may cause secondary damage to the threaded hole, reducing its practicality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for removing broken bolts from wind turbine blades.

[0005] An embodiment of this utility model provides a device for removing broken bolts from wind turbine blades, comprising: Drilling machine; A positioning assembly includes a positioning plate, an adjusting plate, multiple movable columns, and multiple positioning columns. The positioning plate has a through hole, and multiple movable holes are provided inside the through hole. The movable columns are movably disposed in the movable holes, and the positioning columns are fixedly disposed at the outer ends of the movable columns. The movable holes have sliding holes through the top of the positioning plate, and sliding columns are fixedly disposed on the movable columns and movably disposed through the sliding holes. The adjusting plate is rotatably disposed on the positioning plate, and multiple adjusting holes are provided through the adjusting plate. A snap-fit ​​assembly for securing the adjustment disc. Furthermore, the buckle assembly includes a fixed shaft, a locking pin, and a torsion spring. The fixed shaft is fixedly mounted on the positioning plate and rotatably connected through one end of the locking pin. The two ends of the torsion spring are respectively fixedly mounted on the fixed shaft and the locking pin. The outer ring of the adjusting disc is provided with several wedge-shaped teeth.

[0006] Furthermore, a positioning cylinder is fixedly installed on the positioning plate, and a sleeve is fixedly installed on the drilling machine, with the sleeve fitted over the outside of the positioning cylinder.

[0007] Furthermore, the adjustment hole is arc-shaped, and the sliding column is movably disposed through the adjustment hole.

[0008] Furthermore, a limiting post is fixedly provided on the positioning plate, and the limiting post is abutted against the locking post.

[0009] Furthermore, handles are fixedly installed on both the positioning plate and the adjustment plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. A positioning component is provided. By rotating the adjustment plate, the positioning column moves outward synchronously through the adjustment hole and sliding column, and abuts against the inner wall of the threaded hole, thus completing the positioning of the positioning plate and the threaded hole. The sleeve is then placed on the positioning cylinder, allowing for precise drilling of the bolt, avoiding affecting the subsequent repair effect and causing damage to the threaded hole, thereby improving practicality.

[0011] 2. A latching assembly is incorporated. The latch does not affect the clockwise rotation of the adjusting disc, but it abuts against the plane of the wedge-shaped teeth, preventing the adjusting disc from reversing and ensuring positioning stability. Furthermore, by disengaging the latch from the wedge-shaped teeth, the adjusting disc can be rotated in the opposite direction, causing the positioning pin to move inward and release the positioning plate. Operation is simple and ensures positioning stability.

[0012] In summary, this utility model features a positioning component that allows for precise drilling of bolts, improving its practicality; it also includes a snap-fit ​​component to secure the positioning post, ensuring the stability of the positioning. Attached Figure Description

[0013] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the positioning plate in an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the positioning component in an embodiment of the present invention.

[0016] In the above attached diagram: 1. Drilling machine, 2. Positioning plate, 3. Positioning cylinder, 4. Sleeve, 5. Movable hole, 6. Movable column, 7. Positioning column, 8. Sliding hole, 9. Sliding column, 10. Adjusting plate, 11. Adjusting hole, 12. Fixed shaft, 13. Locking post, 14. Torsion spring, 15. Limiting post, 16. Wedge tooth, 17. Handle. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-3As shown in the figure, this utility model embodiment proposes a device for removing broken bolts from wind turbine blades, comprising: Drilling machine 1 is used to drill holes and remove broken bolts. A sleeve 4 is fixedly installed on drilling machine 1.

[0019] The positioning assembly includes a positioning plate 2, an adjusting plate 10, multiple movable columns 6 and multiple positioning columns 7. A positioning cylinder 3 is fixedly installed on the positioning plate 2, and a sleeve 4 is fitted on the outside of the positioning cylinder 3, thereby positioning the drilling machine 1 with the positioning plate 2.

[0020] A through hole is provided on the positioning plate 2, and multiple movable holes 5 are provided on the inner side of the through hole. The movable column 6 is movably disposed in the movable hole 5, so that the movable column 6 can move within the movable hole 5. The positioning column 7 is fixedly disposed on the outer end of the movable column 6. The multiple positioning columns 7 are used to position the positioning plate 2 with the threaded hole.

[0021] The movable hole 5 passes through the top of the positioning plate 2 and is provided with a sliding hole 8. A sliding column 9 is fixedly provided on the movable column 6. The sliding column 9 passes through the sliding hole 8 and is movably provided, so that the sliding column 9 can move within the sliding hole 8.

[0022] The adjusting disc 10 is rotatably mounted on the positioning plate 2 and rotatably connected to the outside of the positioning cylinder 3, allowing the adjusting disc 10 to rotate on the positioning plate 2. Multiple adjusting holes 11 are provided through the adjusting disc 10, such as... Figure 2 As shown, it is arranged in an arc shape, and the sliding column 9 is movably arranged through the adjustment hole 11, so that when the adjustment hole 11 rotates, it can push the sliding column 9 to move.

[0023] Both the positioning plate 2 and the adjusting plate 10 are fixedly equipped with handles 17. The two handles 17 are used to press the positioning plate 2 and rotate the adjusting plate 10.

[0024] A snap-fit ​​assembly is used to fix the adjusting disc 10. The snap-fit ​​assembly includes a fixed shaft 12, a snap pin 13, and a torsion spring 14. The fixed shaft 12 is fixedly mounted on the positioning plate 2, and one end of the fixed shaft 12 is rotatably connected through the snap pin 13, allowing the snap pin 13 to rotate. The two ends of the torsion spring 14 are respectively fixedly mounted on the fixed shaft 12 and the snap pin 13, allowing the snap pin 13 to be elastically connected to the fixed shaft 12 through the torsion spring 14.

[0025] The outer ring of the adjusting disk 10 is provided with several wedge-shaped teeth 16. The other end of the locking post 13 is inserted into the wedge-shaped teeth 16, so that the adjusting disk 10 can only rotate in one direction. When rotating in the reverse direction, the locking post 13 can abut against the wedge-shaped teeth 16, thereby locking the adjusting disk 10.

[0026] A limiting post 15 is fixedly installed on the positioning plate 2. The limiting post 15 is set against the locking post 13, and the limiting post 15 limits the locking post 13 to improve the structural stability.

[0027] The detailed working process of this utility model is as follows: 1. During positioning, insert multiple positioning pins 7 into the threaded holes of the broken bolt, then hold the two handles 17 with both hands and rotate the handles 17 on the adjustment plate 10 to rotate the adjustment plate 10. The rotating adjustment plate 10 drives multiple sliding pins 9 to move outward through multiple adjustment holes 11. The multiple sliding pins 9 drive multiple positioning pins 7 to move outward synchronously through the corresponding movable pins 6, and abut against the inner wall of the threaded hole, thus completing the positioning of the positioning plate 2 and the threaded hole.

[0028] 2. At the same time, during the positioning process, the rotating adjustment plate 10 can push the locking pin 13 open through the inclined surface of multiple wedge teeth 16, so as not to affect the clockwise rotation of the adjustment plate 10; and the locking pin 13 can abut against the plane of the wedge teeth 16, thereby locking the adjustment plate 10, so that the adjustment plate 10 cannot reverse, ensuring the stability of positioning.

[0029] 3. When removing the bolt, place the sleeve 4 on the drilling machine 1 onto the positioning cylinder 3 to precisely drill the bolt and remove it. Finally, separate the locking pin 13 from the wedge-shaped teeth 16, and then rotate the adjusting plate 10 in the opposite direction. This will cause multiple positioning pins 7 to move inward synchronously through the adjusting hole 11, thus loosening the positioning plate 2 (the positioning plate 2 will be loosened when the bolt comes into contact with the positioning pin 7 during the unscrewing process, thus avoiding obstructing the removal of the bolt).

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for removing broken bolts from wind turbine blades, characterized in that, include: Drilling machine (1); The positioning assembly includes a positioning plate (2), an adjusting plate (10), multiple movable columns (6) and multiple positioning columns (7). The positioning plate (2) has a through hole, and multiple movable holes (5) are provided inside the through hole. The movable column (6) is movably disposed in the movable hole (5). The positioning column (7) is fixedly disposed at the outer end of the movable column (6). The movable hole (5) is provided with a sliding hole (8) through the top of the positioning plate (2). A sliding column (9) is fixedly disposed on the movable column (6). The sliding column (9) is movably disposed through the sliding hole (8). The adjusting plate (10) is rotatably disposed on the positioning plate (2). Multiple adjusting holes (11) are provided through the adjusting plate (10). A snap-fit ​​assembly for securing the adjustment disc (10).

2. The device for removing broken bolts from wind turbine blades according to claim 1, characterized in that, in: The buckle assembly includes a fixed shaft (12), a locking pin (13), and a torsion spring (14). The fixed shaft (12) is fixedly mounted on the positioning plate (2). The fixed shaft (12) is rotatably connected through one end of the locking pin (13). The two ends of the torsion spring (14) are respectively fixedly mounted on the fixed shaft (12) and the locking pin (13). The outer ring of the adjusting disc (10) is provided with a number of wedge-shaped teeth (16).

3. The device for removing broken bolts from wind turbine blades according to claim 1, characterized in that, in: A positioning cylinder (3) is fixedly installed on the positioning plate (2), and a sleeve (4) is fixedly installed on the drilling machine (1). The sleeve (4) is fitted on the outside of the positioning cylinder (3).

4. The device for removing broken bolts from wind turbine blades according to claim 1, characterized in that, in: The adjustment hole (11) is arc-shaped, and the sliding column (9) is movably positioned through the adjustment hole (11).

5. The device for removing broken bolts from wind turbine blades according to claim 2, characterized in that, in: A limiting post (15) is fixedly provided on the positioning plate (2), and the limiting post (15) is abutted against the locking post (13).

6. The device for removing broken bolts from wind turbine blades according to claim 1, characterized in that, in: Both the positioning plate (2) and the adjustment plate (10) are fixedly equipped with handles (17).

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