Multi-section fan blade nest facilitating shaft core positioning

Abstract

This utility model relates to the field of fan technology and discloses a multi-segment fan blade nesting method for easy shaft core positioning. It includes a mounting shaft, a stop plate slidably connected to the inner wall of the mounting shaft, a groove formed on the inner wall of the mounting shaft, an outer wall of the stop plate slidably connected to the inner wall of the groove, a sliding block slidably connected to the inner wall of the mounting shaft, a mandrel detachably connected to the outer wall of the mounting shaft, an outer wall of the sliding block slidably connected to the inner wall of the mandrel, multiple mounting grooves formed on the outer wall of the mandrel, and a dovetail groove fixedly connected to the outer wall of the sliding block. In this utility model, multiple sliding blocks and dovetail grooves are provided on the inner wall of the mounting shaft to allow multiple mandrel segments to be mounted on the outside of the mounting shaft, thereby enabling multiple fan blades to be mounted on a single mounting shaft.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a multi-section wind turbine blade nesting method that facilitates shaft core positioning. Background Technology

[0002] The wind turbine blade shaft is the core connecting component between the wind turbine blades and the transmission system. Its primary purpose is to convert the wind energy captured by the blades into mechanical rotational force and stably transmit it to the generator. Firstly, it bears the torque and bending moment generated by the blade's own weight and wind loads, ensuring structural stability. Secondly, it reduces energy loss and improves power generation efficiency through high-precision fitting. Thirdly, as the power transmission hub, it directly affects the overall operational safety and lifespan of the turbine, making it a critical node in the energy conversion and transmission of the wind power generation system.

[0003] The core purpose of nested blade and spindle structures is to achieve a stable connection and power transmission between the blades and the drive system. The nested structure allows for precise positioning of the relative positions of the blades and spindle, ensuring concentricity and reducing vibration and noise during operation. Simultaneously, nesting disperses the torque and axial force borne by the blades, preventing structural damage caused by localized stress concentration and improving overall mechanical strength and service life. Furthermore, this design facilitates assembly and maintenance, ensuring efficient and safe operation of the blades under complex conditions, making it a crucial connection method in rotating machinery such as wind power generation and ventilation equipment.

[0004] In the existing technology, when installing a single wind turbine blade, the nesting of the blade core is usually done. This makes it difficult to install multiple blades when multiple blades need to be installed, as the nesting of a single blade core is not feasible. To address this issue, a multi-segment wind turbine nesting method that facilitates core positioning is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-segment fan blade nesting method that facilitates shaft core positioning, aiming to improve the problem that the existing technology, which can only install a single fan blade core shaft, makes it difficult to install multiple segments.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-segment fan blade nesting system for easy shaft core positioning includes a mounting shaft, a stop plate slidably connected to the inner wall of the mounting shaft, a groove formed on the inner wall of the mounting shaft, the outer wall of the stop plate slidably connected to the inner wall of the groove, a sliding block slidably connected to the inner wall of the mounting shaft, and a core shaft detachably connected to the outer wall of the mounting shaft.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the sliding block is slidably connected to the inner wall of the mandrel, and the outer wall of the mandrel is provided with multiple mounting grooves;

[0010] As a further description of the above technical solution:

[0011] The outer wall of the sliding block is fixedly connected to a dovetail groove, and the outer wall of the dovetail groove is slidably connected to the inner wall of the mandrel.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the mounting shaft is provided with multiple external threads, and the outer wall of the mounting shaft is threaded to multiple threaded rings;

[0014] As a further description of the above technical solution:

[0015] The upper and lower surfaces of the threaded ring are in contact with the upper and lower ends of the mandrel, and the outer wall of the sliding block is fixedly connected to the outer wall of the stop plate.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, multiple sliding blocks and dovetail grooves are provided on the inner wall of the mounting shaft to install multiple mandrels on the outside of the mounting shaft, thereby enabling the installation of multiple fan blades on the mounting groove outside the mandrel. Attached Figure Description

[0018] Figure 1 A three-dimensional schematic diagram of a nested multi-segment fan blade that facilitates shaft positioning, as proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a multi-segment fan blade nested mounting shaft that facilitates shaft core positioning, as proposed in this utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Mounting shaft; 2. Threaded ring; 3. External thread; 4. Mandrel; 5. Mounting groove; 6. Sliding block; 7. Dovetail groove; 8. Slide groove; 9. Stop plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 3 The present invention provides an embodiment of a multi-segment fan blade nesting system that facilitates shaft core positioning, comprising a mounting shaft 1. The mounting shaft 1 serves as the basic load-bearing component of the overall structure for supporting and connecting other components. A stop plate 9 is slidably connected to the inner wall of the mounting shaft 1. The stop plate 9 can slide on the inner wall of the mounting shaft 1 to drive the movement of related components. A groove 8 is provided on the inner wall of the mounting shaft 1. The groove 8 provides guidance and limiting function for the sliding of the stop plate 9 to ensure that it moves along a predetermined trajectory.

[0025] The outer wall of the stop plate 9 is slidably connected to the inner wall of the slide groove 8. This connection method ensures the stability of the stop plate 9 during sliding and prevents it from detaching from the mounting shaft 1. The inner wall of the mounting shaft 1 is slidably connected to a sliding block 6. The sliding block 6 can slide on the inner wall of the mounting shaft 1 to facilitate the installation and positioning of the spindle 4. The outer wall of the mounting shaft 1 is detachably connected to the spindle 4. The detachable connection makes the spindle 4 easy to install and remove, and convenient for later maintenance or replacement. The outer wall of the sliding block 6 is slidably connected to the inner wall of the spindle 4. The sliding connection realizes the positioning function of the sliding block 6 on the spindle 4 and prevents the spindle 4 from rotating in the circumferential direction. The outer wall of the spindle 4 is provided with multiple mounting grooves 5. The multiple mounting grooves 5 are used to install different fan blades to realize the installation of multiple fans.

[0026] Reference Figures 1 to 3 The outer wall of the sliding block 6 is fixedly connected with a dovetail groove 7. The fixed connection ensures that the sliding block 6 and the dovetail groove 7 move synchronously. The outer wall of the dovetail groove 7 is slidably connected to the inner wall of the spindle 4. The cooperation between the dovetail groove 7 and the inner wall of the spindle 4 can better position the spindle 4 axially and circumferentially and improve the stability of the connection. The outer wall of the mounting shaft 1 is provided with multiple external threads 3. The external threads 3 provide a threaded fit basis for the installation of the threaded ring 2.

[0027] Multiple threaded rings 2 are threadedly connected to the outer wall of the mounting shaft 1. The threaded connection makes it easy to install and remove the threaded rings 2 by rotation. The upper and lower surfaces of the threaded rings 2 are in contact with the upper and lower ends of the spindle 4. Through contact, the spindle 4 can be axially limited to prevent it from coming off during operation. The outer wall of the sliding block 6 is fixedly connected to the outer wall of the stop plate 9. This fixed connection ensures that the stop plate 9 can drive the sliding block 6 to move synchronously when it slides, thereby realizing the engagement or disengagement of the sliding block 6 and the spindle 4.

[0028] Working principle: When the spindle 4 needs to be installed on the surface of the mounting shaft 1, the side of the mounting shaft 1 with the sliding block 6 and dovetail groove 7 can be inverted. Under the interference of gravity, the stop plate 9 will slide in the sliding groove 8 inside the mounting shaft 1. Then, the sliding of the stop plate 9 will drive the sliding block 6 and dovetail groove 7 to slide. At this time, the dovetail groove 7 may disengage from the inner wall of the mounting shaft 1. The groove inside the spindle 4 is then aligned with the dovetail groove 7. After the spindle 4 is installed, the threaded ring 2 is installed at the upper and lower ends of the spindle 4 to prevent the spindle 4 from disengaging. The mounting groove 5 on the outer wall of the spindle 4 is used to install the fan blades. Multiple sliding blocks 6 and dovetail grooves 7 are set on the inner wall of the mounting shaft 1 to install multiple sections of the spindle 4 on the outside of the mounting shaft 1. This allows multiple fan blades to be installed on a single mounting shaft 1.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-sectioned fan blade nest for facilitating hub positioning, comprising a mounting shaft, characterized in that: A stop plate is slidably connected to the inner wall of the mounting shaft, a groove is provided on the inner wall of the mounting shaft, the outer wall of the stop plate is slidably connected to the inner wall of the groove, a sliding block is slidably connected to the inner wall of the mounting shaft, and a spindle is detachably connected to the outer wall of the mounting shaft.

2. A multi-sectioned fan blade nest for facilitating positioning of a shaft core according to claim 1, wherein: The outer wall of the sliding block is slidably connected to the inner wall of the mandrel, and the outer wall of the mandrel is provided with multiple mounting grooves.

3. A multi-sectioned fan blade nest for facilitating positioning of a shaft core according to claim 2, wherein: The outer wall of the sliding block is fixedly connected to a dovetail groove, and the outer wall of the dovetail groove is slidably connected to the inner wall of the mandrel.

4. The multi-sectioned fan blade nest with easy shaft core positioning of claim 1, wherein: The outer wall of the mounting shaft is provided with multiple external threads, and multiple threaded rings are connected to the outer wall of the mounting shaft.

5. A multi-sectioned fan blade nest for facilitating hub positioning according to claim 4, wherein: The upper and lower surfaces of the threaded ring are in contact with the upper and lower ends of the mandrel, and the outer wall of the sliding block is fixedly connected to the outer wall of the stop plate.

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