Blade replacing mechanism of wind driven generator

Abstract

The utility model discloses a wind driven generator blade replacing mechanism which comprises a blade shaft, rotating blocks are evenly installed outside the blade shaft, limiting grooves are formed in one sides of the rotating blocks, connecting blocks are installed inside the limiting grooves, extrusion protruding blocks are evenly installed on the two sides inside the limiting grooves, and the extrusion protruding blocks are connected with the connecting blocks. And fixing mechanisms are arranged on the two sides of the connecting blocks correspondingly, blade bodies are installed at the top ends of the connecting blocks correspondingly, and reinforcing strips are connected to the bottom ends of the two sides of each blade body and the two sides of the corresponding connecting block correspondingly. The sliding blocks are matched with the sliding grooves, the sliding blocks move under the rotating action of the blade body, so that the cleaning ring can clean the surface of the blade body, certain reverse thrust is provided for the sliding blocks under the action of the elastic strips, the springs, the top plate and the elastic cushion, reciprocating motion of the sliding blocks is promoted, and the cleaning effect of the blade body is improved. Therefore, the self-cleaning effect of the blade body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor blades, in particular to a wind turbine blade replacement mechanism. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind energy is a clean, pollution-free renewable energy source. Using wind power for power generation is very environmentally friendly and has huge wind energy reserves. Therefore, it is increasingly valued by countries around the world. The blades are the main structure of wind power generation equipment.

[0003] The existing large wind power generator blades mainly use the wind force to push the blades to drive the blade shaft to rotate, thereby providing mechanical power for the generator to be converted into electricity. The existing blades are generally an integrated structure. After long-term use, a large amount of dust and other impurities are easily attached to the blade surface. The existing cleaning method is generally manual cleaning, which is inefficient and highly dangerous. At the same time, since the existing blade structure is relatively simple and does not have a certain power assist mechanism, the rotation effect of the blade is average when the wind force is relatively small. Therefore, there is a certain room for improvement. An improvement plan is now proposed. Utility Model Content

[0004] The utility model aims to provide a wind turbine blade replacement mechanism to solve the problem that the existing wind turbine blades are difficult to clean as mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine blade replacement mechanism, comprising a blade shaft, a rotating block is evenly installed on the outside of the blade shaft, and a limiting groove is provided on one side of the rotating block, a connecting block is installed inside the limiting groove, extrusion protrusions are evenly installed on both sides of the limiting groove, fixing mechanisms are provided on both sides of the connecting block, a blade body is installed on the top of the connecting block, and the bottom ends of both sides of the blade body are respectively connected to the two sides of the connecting block with reinforcing strips, a slide groove is provided on one side of the blade body, and elastic strips are evenly installed on the top of the slide groove, an elastic mechanism is provided on the bottom end of the slide groove, a slider is installed inside the slide groove, and a cleaning ring is sleeved on the outside of the slider.

[0006] When a wind turbine blade replacement mechanism of the present technical solution is used, the movement of the slider is achieved by cooperating with the slider and the slide groove and utilizing the rotation of the blade body, so that the cleaning ring can clean the surface of the blade body, and a certain reverse thrust is provided to the slider through the action of the elastic strip, spring, top plate and elastic pad to promote the reciprocating movement of the slider, thereby achieving a self-cleaning effect of the blade body.

[0007] Preferably, the blade body is distributed in a ring shape on the blade shaft, the cross-section of the blade body is rectangular, and one side of the blade body is an inclined curved surface.

[0008] Preferably, the cross section of the slider is T-shaped, the internal shape and size of the slide groove match the external shape and size of the slider, and the cleaning ring forms an up and down sliding structure with the blade body through the interaction between the slider and the slide groove.

[0009] Preferably, the fixing mechanism includes a positioning groove, and the positioning groove is opened at the top of the rotating block, an L-shaped positioning plate is installed inside the positioning groove, and one side of the top of the L-shaped positioning plate is connected to one side of the connecting block, a positioning bolt passes through the L-shaped positioning plate and the positioning groove, and one end of the positioning bolt extends to the outside of the rotating block, and the outside of the positioning bolt is covered with an anti-slip gasket.

[0010] Preferably, the elastic mechanism comprises a spring, and the spring is installed at the bottom end inside the slide groove, a top plate is installed at the top end of the spring, and an elastic pad is installed at the top end of the top plate.

[0011] Preferably, the cross-section of the extrusion protrusion is semicircular, a plurality of the extrusion protrusions are provided, and the extrusion protrusions are evenly distributed at equal intervals inside the limiting groove.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the wind turbine blade replacement mechanism not only achieves a self-cleaning effect, but also improves the rotation performance of the blades, and is convenient for installing and fixing the blades;

[0013] Through the cooperation of the slider and the slide groove, the rotation of the blade body is utilized to realize the movement of the slider, so that the cleaning ring can clean the surface of the blade body, and through the action of the elastic strip, spring, top plate and elastic pad, a certain reverse thrust is provided for the slider to promote the reciprocating movement of the slider, thereby realizing the self-cleaning effect of the blade body;

[0014] Through the reciprocating movement of the slider, when the slider is located at the outer end of the blade body, a certain lever force is increased, thereby promoting the rotational inertia of the blade body and making the rotation performance of the blade body better;

[0015] The elastic protrusion improves the tightness of the connection between the connecting block and the limiting groove, making the limiting of the blade body more stable. At the same time, under the action of the L-shaped positioning plate, positioning groove, positioning bolts, etc., the fixing effect between the connecting block and the rotating block is improved, thereby ensuring the reliability of the installation of the blade body. This installation method is relatively simple to operate during disassembly, and is convenient for disassembly and replacement of the blade body separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a partial side cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 For the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0020] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at B in the middle;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the blade body of the utility model.

[0022] Explanation of the reference numerals in the figure: 1. blade shaft; 2. rotating block; 3. connecting block; 4. blade body; 5. reinforcing strip; 6. sliding block; 7. cleaning ring; 8. sliding groove; 9. elastic strip; 10. fixing mechanism; 1001. positioning groove; 1002. L-shaped positioning plate; 1003. positioning bolt; 1004. anti-slip gasket; 11. limiting groove; 12. extrusion protrusion; 13. elastic mechanism; 1301. spring; 1302. top plate; 1303. elastic pad. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of 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.

[0024] See also Figure 1-5 The utility model provides an embodiment: a wind turbine blade replacement mechanism, comprising a blade shaft 1, a rotating block 2 is evenly installed on the outside of the blade shaft 1, and a limiting groove 11 is provided on one side of the rotating block 2, a connecting block 3 is installed inside the limiting groove 11, and extrusion protrusions 12 are evenly installed on both sides of the limiting groove 11;

[0025] The cross section of the extrusion protrusion 12 is semicircular, and a plurality of the extrusion protrusions 12 are provided. The extrusion protrusions 12 are evenly distributed at equal intervals inside the limiting groove 11;

[0026] Specifically, Figure 2 and Figure 4 As shown, when in use, the extrusion protrusion 12 is used to further squeeze the connection block 3, thereby improving the connection tightness between the limiting groove 11 and the connection block 3, and making the fixing stability better;

[0027] Fixing mechanisms 10 are provided on both sides of the connecting block 3;

[0028] The fixing mechanism 10 includes a positioning groove 1001, and the positioning groove 1001 is opened at the top of the rotating block 2, an L-shaped positioning plate 1002 is installed inside the positioning groove 1001, and one side of the top of the L-shaped positioning plate 1002 is connected to one side of the connecting block 3, a positioning bolt 1003 is passed through between the L-shaped positioning plate 1002 and the positioning groove 1001, and one end of the positioning bolt 1003 extends to the outside of the rotating block 2, and the outside of the positioning bolt 1003 is covered with an anti-slip pad 1004;

[0029] Specifically, Figure 2 and Figure 4 As shown, when in use, the positioning bolt 1003 is used to position the L-shaped positioning plate 1002, and the L-shaped positioning plate 1002 makes the connection block 3 and the rotating block 2 more securely fixed. At the same time, the anti-slip pad 1004 is used to reduce the loosening of the positioning bolt 1003;

[0030] The top of the connecting block 3 is equipped with a blade body 4;

[0031] The blade body 4 is distributed in a ring shape on the blade shaft 1, the cross section of the blade body 4 is rectangular, and one side of the blade body 4 is an inclined curved surface;

[0032] Specifically, Figure 1 and Figure 5 As shown, when in use, the inclined curved surface is used to facilitate contact with the wind force, so that it generates a driving force to rotate the blade body 4, and the windward angle of the blade body 4 is adjusted through the action of the rotating block 2;

[0033] The bottom ends of both sides of the blade body 4 are connected to the two sides of the connection block 3 with reinforcement strips 5 respectively, one side of the blade body 4 is provided with a slide groove 8, and the top of the slide groove 8 is evenly installed with elastic strips 9, and the bottom end of the slide groove 8 is provided with an elastic mechanism 13;

[0034] The elastic mechanism 13 includes a spring 1301, and the spring 1301 is installed at the bottom end of the slide groove 8, a top plate 1302 is installed at the top of the spring 1301, and an elastic pad 1303 is installed at the top of the top plate 1302;

[0035] Specifically, Figure 2 and Figure 3 As shown, when in use, the elasticity of the spring 1301 generates an upward pushing force, thereby promoting the reverse sliding of the slider 6, so that the slider 6 can move back and forth, and the elastic pad 1303 can reduce the possibility of the slider 6 being broken;

[0036] Slide blocks 6 are installed inside the slide grooves 8;

[0037] The cross section of the slider 6 is T-shaped, the internal shape and size of the slide groove 8 match the external shape and size of the slider 6, and the cleaning ring 7 forms an up-and-down sliding structure with the blade body 4 through the interaction between the slider 6 and the slide groove 8;

[0038] And the outside of the slider 6 is covered with a cleaning ring 7;

[0039] Specifically, Figure 1 , Figure 2 and Figure 5 As shown, when in use, the T-shaped structure is used to limit the slider 6 so that the slider 6 can slide stably inside the slide groove 8 to prevent the slider 6 from falling.

[0040] Working principle: When the utility model is used, firstly, the connection block 3 is inserted into the inner part of the limiting groove 11, and the connection tightness between the limiting groove 11 and the connection block 3 is improved by squeezing the convex block 12, and at the same time, the L-shaped positioning plate 1002 is inserted into the inner part of the positioning groove 1001, and the positioning bolt 1003 is tightened, so that the anti-slip gasket 1004 is against the surface of the rotating block 2, which is conducive to improving the installation stability of the positioning bolt 1003 and preventing it from loosening, that is, the installation and fixation of the blade body 4 is realized, and the connection reliability between the blade body 4 and the connection block 3 is improved by the action of the reinforcing strip 5;

[0041] Secondly, during the rotation of the blade body 4, the slider 6 slides to one end of the slide groove 8 due to its own weight, so that the slider 6 drives the cleaning ring 7 to move, so as to clean the blade body 4. At the same time, the slider 6 is away from the blade shaft 1, and the lever force generated by the force arm difference is used to drive the rotation of the blade body 4, thereby improving the rotation effect;

[0042] Finally, when the blade body 4 rotates to the top, its slider 6 approaches the blade shaft 1, thereby impacting the elastic pad 1303. The elastic action of the spring 1301 causes it to exert a reverse force on the slider 6, which cooperates with the action of the elastic strip 9 to promote the reciprocating movement of the slider 6, allowing the cleaning ring 7 to clean the blade body 4 back and forth.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wind turbine blade replacement mechanism, comprising a blade shaft (1), Features: The outside of the blade shaft (1) is evenly mounted with a rotating block (2), and a limiting groove (11) is provided on one side of the rotating block (2), a connecting block (3) is installed inside the limiting groove (11), and extrusion protrusions (12) are evenly installed on both sides of the limiting groove (11), and fixing mechanisms (10) are provided on both sides of the connecting block (3), a blade body (4) is installed on the top of the connecting block (3), and the bottom ends of both sides of the blade body (4) are respectively connected to the two sides of the connecting block (3) with reinforcing strips (5), a sliding groove (8) is provided on one side of the blade body (4), and elastic strips (9) are evenly installed on the top of the sliding groove (8), and an elastic mechanism (13) is provided on the bottom end of the sliding groove (8), a sliding block (6) is installed inside the sliding groove (8), and a cleaning ring (7) is sleeved on the outside of the sliding block (6).

2. A wind turbine blade replacement mechanism according to claim 1, Features: The blade body (4) is distributed in a ring shape on the blade shaft (1); the cross section of the blade body (4) is rectangular; and one side of the blade body (4) is an inclined curved surface.

3. A wind turbine blade replacement mechanism according to claim 1, Features: The cross section of the slider (6) is T-shaped, the internal shape and size of the slide groove (8) match the external shape and size of the slider (6), and the cleaning ring (7) forms an up and down sliding structure with the blade body (4) through the interaction between the slider (6) and the slide groove (8).

4. A wind turbine blade replacement mechanism according to claim 1, Features: The fixing mechanism (10) comprises a positioning groove (1001), and the positioning groove (1001) is opened at the top of the rotating block (2), an L-shaped positioning plate (1002) is installed inside the positioning groove (1001), and one side of the top of the L-shaped positioning plate (1002) is connected to one side of the connecting block (3), a positioning bolt (1003) passes through between the L-shaped positioning plate (1002) and the positioning groove (1001), and one end of the positioning bolt (1003) extends to the outside of the rotating block (2), and the outside of the positioning bolt (1003) is covered with an anti-slip gasket (1004).

5. A wind turbine blade replacement mechanism according to claim 1, Features: The elastic mechanism (13) comprises a spring (1301), and the spring (1301) is installed at the bottom end inside the slide groove (8), a top plate (1302) is installed at the top end of the spring (1301), and an elastic pad (1303) is installed at the top end of the top plate (1302).

6. A wind turbine blade replacement mechanism according to claim 1, Features: The cross section of the extrusion protrusion (12) is semicircular, a plurality of the extrusion protrusions (12) are provided, and the extrusion protrusions (12) are evenly distributed at equal intervals inside the limiting groove (11).

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