Blade zero-position lead device of wind generating set

Abstract

The utility model discloses a wind generating set blade zero position lead device which comprises a connecting section, a hub end fixing device is arranged on the lower portion of the connecting section, a lineation device is arranged on the upper portion of the connecting section, and a lineation groove is formed in the lineation device in the radial direction. Under the condition that only the zero mark of the hub casting body serves as a reference, the blade zero line on the end face of the outer ring of the variable-pitch bearing can be accurately drawn, and the width of the mark line is unified. In addition, the tool can adapt to variable-pitch bearings with different thicknesses, universality is achieved, and therefore the variable-pitch precision of the blade is remarkably improved, and the power generation efficiency of the wind driven generator is optimized.

Description

Technical Field

[0001] This utility model relates to a zero-position lead wire device for wind turbine blades, belonging to the field of marking tooling technology. Background Technology

[0002] With the continuous advancement of renewable energy technologies, wind power has become an important component of the global energy structure. In the manufacturing process of wind turbine generators, hub assembly is a crucial step that directly affects the operating efficiency and stability of the wind turbine. This application aims to solve the technical challenges our company encounters during the assembly of wind turbine hubs.

[0003] During wind turbine assembly, zero-position marking lines need to be drawn on the end faces of the outer and inner rings of the pitch bearing for ease of assembly. The zero-position marking line on the blade of the outer ring of the pitch bearing should be aligned with the zero-position mark on the hub casting. Traditionally, the zero-position line is already marked on the outer cylindrical surface of the pitch bearing at the factory, and a right-angle scribing tool is used to transfer this line to the bearing end face. However, during pitch bearing assembly, there is a gap between the mounting hole of the bearing outer ring and the studs securing the bearing. After installing the pitch bearing, the zero-position marking line on the blade of the outer ring cannot be precisely aligned with the zero-position mark on the hub casting, leading to inaccurate blade pitch angles later on. Furthermore, with traditional scribing tools, the marking lines drawn by the scribing pen vary in width; excessively wide lines cannot provide a precise reference for blade installation. Utility Model Content

[0004] The purpose of this utility model is to provide a zero-position lead wire device for wind turbine blades, addressing the aforementioned problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A zero-position lead wire device for wind turbine blades includes a connecting section, a hub end fixing device at the lower part of the connecting section, and a marking device at the upper part of the connecting section, wherein the marking device has a marking groove arranged radially.

[0007] Alternatively, the connecting section can be a slide rail arranged along the axial direction, and the marking device can be moved along the slide rail and then fixed.

[0008] Alternatively, the marking device is provided with a through hole, and the marking device is fitted onto the slide rail through the through hole. A fixing bolt perpendicular to the length direction of the slide rail is provided on one side of the through hole, and the fixing bolt is tightened onto the slide rail.

[0009] Alternatively, the marking device may be provided with a fixing part, which is fixed to the outer ring of the pitch bearing.

[0010] Alternatively, the fixing part includes a mounting hole, a magnet is provided in the lower part of the mounting hole, the magnet can move up and down along the mounting hole, an anti-rotation ring is welded above the magnet, and the magnet and the mounting hole are circumferentially limited; an adjusting bolt is threadedly connected to the upper part of the magnet, and the head of the adjusting bolt contacts the upper end face of the mounting hole.

[0011] Alternatively, a washer may be provided between the adjusting bolt and the upper end face of the mounting hole.

[0012] Alternatively, the bottom of the marking device is provided with a positioning part, which has an arc shape that fits against the outer ring of the pitch bearing.

[0013] Alternatively, the end of the hub-end fixing device may have a fixing groove.

[0014] Alternatively, the hub end fixing device is hinged to the connecting section.

[0015] Alternatively, the connecting section may be provided with a weight-reducing groove, and the marking device may be provided with a weight-reducing hole.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] This invention provides a zero-position guide wire device for wind turbine blades, which enables precise drawing of the blade zero-position marking line on the outer ring end face of the pitch bearing, using only the zero-position line marking on the hub casting as a reference, and ensuring a uniform marking line width. Furthermore, this tooling can adapt to pitch bearings of different thicknesses, achieving versatility and significantly improving the pitch accuracy of the blades, thereby optimizing the power generation efficiency of the wind turbine. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a zero-position lead wire device for wind turbine blades.

[0019] Figure 2 This is a schematic diagram of the internal structure of a zero-position lead wire device for wind turbine blades.

[0020] Figure 3 This is a three-dimensional assembly diagram of a zero-position lead wire device for a wind turbine blade.

[0021] Figure 4 This is a schematic diagram of the assembly cross-section of a zero-position lead wire device for a wind turbine blade.

[0022] The markings in the diagram are: 1-connecting section, 11-weight reduction groove, 2-hub end fixing device, 21-fixing slot, 3-marking device, 31-marking groove, 32-magnet, 33-anti-rotation ring, 34-adjusting bolt, 35-positioning part, 36-weight reduction hole, 4-fixing bolt, 5-washer. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] A zero-position lead wire device for wind turbine blades, such as Figure 1-4 As shown, it includes a connecting section 1, the lower part of which is provided with a hub end fixing device 2, and the upper part of which is provided with a scribing device 3, and the scribing device 3 is provided with a scribing groove 31 arranged radially.

[0026] Connecting section 1, as part of the device, is located between hub end fixing device 2 and scribing device 3, acting as a bridge to tightly integrate the two functional parts into a complete scribing system. The hub end fixing device 2 at the bottom of connecting section 1 is directly connected to the hub end, allowing operators to scribing the bearing directly based on the hub's position. This marking line aligns with the zero-position mark on the hub casting body, eliminating the need for additional measuring or positioning tools and simplifying the operation. The hub end fixing device 2 ensures that connecting section 1 is securely fixed to the hub, preventing deviations caused by vibration, slippage, etc., during scribing and improving accuracy. The scribing device 3 at the top of connecting section 1 is used to scribble the zero-position marking line on the outer ring end face of the pitch bearing. The scribing groove 31 guides the scribing tool along the correct path.

[0027] In another specific implementation, the connecting section 1 is a slide rail arranged along the axial direction, and the marking device 3 can move along the slide rail and then be fixed. The marking device 3 can move along the slide rail, which can adapt to hubs of different widths and improve the versatility of the device.

[0028] The marking device 3 is provided with a fixing part, which is fixed to the outer ring of the pitch bearing. The fixing part ensures that the marking device 3 is stably fixed to the outer ring of the pitch bearing during the marking process, reducing vibration and displacement, thereby improving the stability of the marking.

[0029] In another specific embodiment, the fixing part includes a mounting hole, and a magnet 32 ​​is provided in the lower part of the mounting hole. The magnet 32 ​​can move up and down along the mounting hole. An anti-rotation ring 33 is welded above the magnet 32, and the magnet 32 ​​and the mounting hole are circumferentially limited. An adjusting bolt 34 is threadedly connected to the upper part of the magnet 32, and the head of the adjusting bolt 34 contacts the upper end face of the mounting hole.

[0030] The mounting hole is located on the scribing device 3 and is used to accommodate the magnet 32. It needs to match the size of the magnet 32 ​​to ensure that the magnet 32 ​​can be installed smoothly. The magnet 32 ​​is located in the lower inner part of the mounting hole and magnetically fixes the scribing device 3 to the outer ring of the pitch bearing. The magnet 32 ​​can move up and down along the mounting hole to adjust the distance between the magnet 32 ​​and the outer ring of the bearing by rotating the adjusting bolt 34, thus fixing or releasing the fixation. An anti-rotation ring 33 is provided in the middle of the magnet 32 ​​to prevent the magnet 32 ​​from rotating during fixing or adjustment, allowing relative rotation with the adjusting bolt 34. It can move up and down along the groove to adjust the position of the magnet 32.

[0031] In another specific embodiment, a washer 5 is provided between the adjusting bolt 34 and the upper end face of the mounting hole. The outer diameter of the washer 5 is larger than the outer diameter of the mounting hole, so the washer 5 can always be located above the mounting hole, thereby achieving axial positioning of the magnet 32.

[0032] In another specific embodiment, the bottom of the marking device 3 is provided with a positioning part 35, which has an arc shape that fits against the outer ring of the pitch bearing. The arc-shaped positioning part 35 can fit tightly against the surface of the bearing outer ring, thereby achieving precise alignment and reducing marking errors caused by device movement or tilting. This improves the stability and reliability of the marking device 3 during operation.

[0033] In another specific embodiment, the end of the hub-end fixing device 2 has a fixing groove 21. The fixing groove 21 is part of the hub-end fixing device 2, providing a simple and quick installation method for cooperating with the upright plate structure corresponding to the hub to achieve the purpose of fixing or positioning.

[0034] In another specific embodiment, the hub end fixing device 2 is hinged to the connecting section 1. The hinged structure allows the hub end fixing device 2 to be angled as needed to adapt to different working positions or angles.

[0035] As another specific implementation, the connecting segment 1 is provided with a weight-reducing groove 11, and the marking device 3 is provided with a weight-reducing hole 36. By removing material, the overall weight of the connecting segment 1 is reduced, making it easier for workers to operate. Specifically, the weight-reducing groove 11 is a strip-shaped groove along the strip direction of the connecting segment 1, making the middle of the connecting segment 1 U-shaped, while effectively resisting torsional and shear forces.

[0036] The working process of the zero-position lead wire device for wind turbine blades provided in this embodiment is as follows:

[0037] Step 1: Fix the hub end fixing device 2 onto the hub, and adjust the position of the scribing device 3 along the connecting section 1 so that the bottom of the scribing device 3 contacts the upper end face of the outer ring of the bearing.

[0038] Step 2: Rotate the adjusting bolt 34 to move the magnet 32 ​​downwards and make it contact the upper end face of the outer ring of the bearing, thereby positioning the scribing device 3.

[0039] Step 3: Mark lines using the marking groove 31;

[0040] Step 4: After marking the lines, rotate the adjusting bolt 34 in the opposite direction to disengage the magnet 32 ​​from the bearing and disassemble the device.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. The present utility model extends to any new features or combinations disclosed in this specification, and any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model. It is obvious to those skilled in the art that the present utility model is not limited to the details of the above exemplary embodiments, and that detailed technical features not disclosed in this embodiment, such as specific structures and connection methods, can be obtained by those skilled in the art from the prior art; the present disclosure does not specifically limit these aspects.

Claims

1. A zero-position lead wire device for wind turbine blades, characterized in that: It includes a connecting section (1), the lower part of which is provided with a hub end fixing device (2), and the upper part of which is provided with a scribing device (3), and the scribing device (3) is provided with a scribing groove (31) arranged in the radial direction.

2. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The connecting section (1) is a slide rail arranged along the axial direction, and the marking device (3) can be moved along the slide rail and then fixed.

3. The wind turbine blade zero-position lead wire device as described in claim 2, characterized in that: The marking device (3) is provided with a through hole, and the marking device (3) is sleeved on the slide rail through the through hole. A fixing bolt (4) perpendicular to the length direction of the slide rail is provided on one side of the through hole, and the fixing bolt (4) is tightened on the slide rail.

4. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The marking device (3) is provided with a fixing part for fixing to the outer ring of the pitch bearing.

5. The wind turbine blade zero-position lead wire device as described in claim 4, characterized in that: The fixing part includes a mounting hole, and a magnet (32) is provided in the lower part of the mounting hole. The magnet (32) can move up and down along the mounting hole. An anti-rotation ring (33) is welded above the magnet (32). The magnet (32) and the mounting hole are circumferentially limited. An adjusting bolt (34) is threadedly connected to the upper part of the magnet (32). The head of the adjusting bolt (34) contacts the upper end face of the mounting hole.

6. The wind turbine blade zero-position lead wire device as described in claim 5, characterized in that: A washer (5) is provided between the adjusting bolt (34) and the upper end face of the mounting hole.

7. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The bottom of the marking device (3) is provided with a positioning part (35), which has an arc shape that fits against the outer ring of the pitch bearing.

8. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The end of the hub end fixing device (2) has a fixing groove (21).

9. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The hub end fixing device (2) is hinged to the connecting section (1).

10. The wind turbine blade zero-position lead wire device as described in claim 1, characterized in that: The connecting section (1) is provided with a weight-reducing groove (11), and the marking device (3) is provided with a weight-reducing hole (36).

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