Fixing flange for wind power blade connection

Abstract

The utility model discloses a fixed flange for wind power blade connection, which comprises a flange main body, the flange main body comprises an inner support and an outer support, the outer edge surface of the inner support is provided with a mounting part, the outer edge surface of the mounting part is provided with the outer support, the mounting part is internally provided with four mounting grooves, and the mounting grooves are internally provided with bolt anti-drop mechanisms. The bolt anti-disengaging mechanism comprises a bolt sleeve assembled in the mounting groove, the top end of the bolt sleeve is sleeved with a protective cap, an anti-disengaging ring is assembled on the inner wall of the bolt sleeve, and step-shaped protrusions are arranged on the surface of the anti-disengaging ring. According to the fixing flange for wind power blade connection, the bolt anti-loosening mechanism is arranged on the mounting part, stepped protrusions can be arranged on the surface of the anti-loosening ring in the clockwise direction, when a nut in the mounting groove is loosened anticlockwise, the stepped protrusions can abut against the nut, the effect of preventing the nut from loosening is achieved, and under the effect of the connecting structure, the nut can be prevented from being loosened. And the bolt can be protected.

Description

Technical Field

[0001] This patent relates to the field of fixed flange technology, specifically a fixed flange for connecting wind turbine blades. Background Art

[0002] Flange is also called flange or flange. Flange is a part that connects pipes and valves to each other and is connected to the pipe end. There are holes on the flange, and bolts connect the two flanges tightly. Gaskets are used to seal the flanges. Flanges are divided into threaded flanges, welding flanges and ferrule flanges. On wind turbines, blades are installed on blade flanges. As the requirements for the size and weight of mechanical equipment become higher and higher;

[0003] However, the blade fixing flange in the prior art still has some shortcomings. For example, the wind turbine blade flange does not have a structure to prevent the nut from loosening. If the bolts and nuts at the connection become loose during use, the blade will cause shaking. Therefore, the prior art needs to be improved. Utility Model Content

[0004] The purpose of this patent is to provide a fixed flange for connecting wind turbine blades to solve the problem that the wind turbine blade flange proposed in the above-mentioned background technology has no structure to prevent the nuts from loosening. If the bolts and nuts at the connection become loose during use, the blades will cause shaking.

[0005] To achieve the above-mentioned purpose, this patent provides the following technical solutions: a fixed flange for connecting wind turbine blades, comprising a flange body, the flange body comprising an inner support and an outer support, the outer edge surface of the inner support is equipped with a mounting portion, the outer edge surface of the mounting portion is equipped with an outer support, four mounting grooves are opened inside the mounting portion, the interior of the mounting groove is equipped with a bolt anti-slip mechanism, the bolt anti-slip mechanism comprises a bolt sleeve assembled in the mounting groove, a protective cap is mounted on the top end of the bolt sleeve, an anti-loosening ring is assembled on the inner wall of the bolt sleeve, and a stepped protrusion is provided on the surface of the anti-loosening ring.

[0006] Preferably, the bolt sleeve and the protective cap are connected via a connecting structure, and the connecting structure includes a metal tube, a rubber ring, a clamping block and an L-shaped groove;

[0007] The metal tube is connected to the bolt sleeve, the rubber ring is installed in the protective cap, the clamping block is installed on the outer wall of the metal tube, the L-shaped groove is opened on the rubber ring, the L-shaped groove is opened on the metal tube, the metal tube is inserted into the rubber ring, and the clamping block is clamped in the L-shaped groove.

[0008] Preferably, the block is provided with a groove, a spring assembly is installed in the groove, a ball is installed on the spring assembly, an arc groove is provided on the L-shaped groove, and the ball is clamped in the arc groove.

[0009] Preferably, the spring assembly comprises an outer plate body, a middle plate body and an inner plate body, the four corners of the outer plate body and the middle plate body are hinged to each other, and springs are hinged to the four corners of the other side of the middle plate body.

[0010] Preferably, the other ends of the four springs are hinged at four corners of a side surface of the inner plate body.

[0011] Preferably, four weight-reducing grooves are evenly arranged on the inner side wall of the mounting portion, and reinforcing ribs are installed on the upper surface of the mounting portion.

[0012] Compared with the prior art, the beneficial effects of this patent are: the setting of the fixed flange for connecting the wind turbine blades has a reasonable structural design;

[0013] It can maintain the original installation and fixing strength, and can reduce the overall weight, thereby saving materials, and a bolt anti-slip mechanism is set on the installation part. There can be a stepped protrusion on the surface of the anti-loosening ring, and it is in a clockwise direction. When the nut inside the installation groove loosens counterclockwise, the stepped protrusion will hold the nut against the nut to prevent the nut from loosening. Under the action of the connecting structure, the bolt can also be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of this patent;

[0015] Figure 2 This is a schematic diagram of the metal tube, rubber ring and clamping block structure of the patent;

[0016] Figure 3 This is a schematic diagram of the groove, spring assembly and ball structure of the patent;

[0017] Figure 4 This is a schematic diagram of the spring assembly of this patent.

[0018] In the figure: 1. flange body, 1011. inner support, 1021. outer support, 1031. mounting portion, 2. weight reduction groove, 3. mounting groove, 4. connection structure, 401. metal tube, 402. rubber ring, 403. block, 404. L-shaped groove, 5. protective cap, 6. bolt sleeve, 7. arc groove, 8. ball, 9. groove, 10. spring assembly, 101. inner plate, 102. spring, 103. middle plate, 104. outer plate, 11. anti-loosening ring, 12. stepped protrusion. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0020] See also Figure 1-4 , this patent provides a technical solution:

[0021] In the technical solution, a fixed flange for connecting wind turbine blades includes a flange body 1, the flange body 1 includes an inner support 1011 and an outer support 1021, the outer edge surface of the inner support 1011 is equipped with a mounting portion 13, the outer edge surface of the mounting portion 1031 is equipped with the outer support 1021, four mounting grooves 3 are opened inside the mounting portion 1031, the inside of the mounting groove 3 is equipped with a bolt anti-slip mechanism, the bolt anti-slip mechanism includes a bolt sleeve 6 assembled in the mounting groove 3, the top of the bolt sleeve 6 is equipped with a protective cap 5, the inner wall of the bolt sleeve 6 is equipped with an anti-loosening ring 11, and the surface of the anti-loosening ring 11 is provided with a stepped protrusion 12;

[0022] In this technical solution, the outer edge surface of the inner support 1011 is fixedly connected to the mounting portion 1031, and the mounting portion 1031 is used for installation and fixation with the hub. The outer edge surface of the mounting portion 1031 is fixedly connected to the outer support 1021. The inner support 1011 and the outer support 1021 can fix blades of different shapes by changing their shapes.

[0023] In some technical solutions, the protective cap 5 is connected to the bolt sleeve 6 via a connecting structure 4, and the connecting structure 4 includes a metal tube 401, a rubber ring 402, a clamping block 403 and an L-shaped groove 404;

[0024] The metal tube 401 is connected to the bolt sleeve 6, the rubber ring 402 is installed in the protective cap 5, the clamping block 403 is installed on the outer wall of the metal tube 401, the L-shaped groove 404 is opened on the rubber ring 402, the L-shaped groove 404 is opened on the metal tube 401, the metal tube 401 is inserted into the rubber ring 402, and the clamping block 403 is clamped in the L-shaped groove 404;

[0025] The clamping block 403 is provided with a groove 9 , in which a spring assembly 10 is installed, on which a ball 8 is installed, and the L-shaped groove 404 is provided with an arc groove 7 , in which the ball 8 is clamped.

[0026] In this technical solution, the rubber ring 402 is made of fluororubber material, which is corrosion-resistant and acid-resistant. The arc groove 7 is opened in the L-shaped groove 404 on the protective cap 5.

[0027] In some technical solutions, the spring assembly 10 includes an outer plate body 104, a middle plate body 103 and an inner plate body 101. The four corners of the outer plate body 104 and the middle plate body 103 are hinged to each other. Springs 102 are hinged at the four corners of the other side of the middle plate body 103, and the other ends of the four springs 102 are hinged at the four corners of one side of the inner plate body 101.

[0028] In this technical solution, the outer plate 104 is mounted on the inner wall of the groove 9, the ball 8 is mounted on the inner plate 101, and the spring 102 is hinged in the three plates, so as to adapt to forces at different angles.

[0029] In some technical solutions, four weight-reducing grooves 2 are evenly formed on the inner side wall of the mounting portion 1031 , and reinforcing ribs are installed on the upper surface of the mounting portion 1031 .

[0030] In this technical solution, the gravity can be reduced by the weight-reducing groove 2, and the reinforcement ribs can be used to connect

[0031] Working principle: When in use, the bottom of the blade can be welded to the top of the inner support 1011, so that the inner side of the reinforcing rib will fit with the outer wall of the bottom of the blade, and the four sides of the reinforcing rib will be welded to the outer wall of the blade to strengthen the connection between the blade and the inner support 1011. When installing it with the wheel hub, the bolt passes through the inside of the reinforcing rib, and the nut is fixed with the bolt. The bottom of the nut contacts the protrusion on the surface of the anti-loosening ring. When the nut loosens due to vibration, the protrusion on the surface of the anti-loosening ring will hold the nut in place, which can prevent the nut from loosening. The locking nut loosens the bolt sleeve 6, and then the bolt sleeve 6 is inserted into the rubber ring 402 on the protective cap 5 with the metal tube 401, so that the bolt sleeve 6 and the protective cap 5 are sealed and connected; as the metal tube 401 is inserted into the rubber ring 402 on the protective cap 5, the clamping block 403 is clamped into the L-shaped groove 404, and the metal tube 401 is rotated, so that the clamping block 403 is clamped into the root position of the L-shaped groove 404. At this time, the spring assembly 10 in the groove 9 gives the ball 8 an outward force, and the ball 8 is clamped into the arc groove 7, thereby enhancing the connection stability between the bolt sleeve 6 and the protective cap 5.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although the present invention has been described above with reference to the embodiments, various modifications may be made to the embodiments and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in the present specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fixed flange for connecting wind turbine blades, comprising a flange body (1), characterized in that: The flange body (1) comprises an inner support (1011) and an outer support (1021); the outer edge surface of the inner support (1011) is equipped with a mounting portion (1031); the outer edge surface of the mounting portion (1031) is equipped with the outer support (1021); four mounting grooves (3) are provided inside the mounting portion (1031); the mounting groove (3) is equipped with a bolt anti-slip mechanism; the bolt anti-slip mechanism comprises a bolt sleeve (6) mounted in the mounting groove (3); the top end of the bolt sleeve (6) is equipped with a protective cap (5); the inner wall of the bolt sleeve (6) is equipped with an anti-loosening ring (11); the surface of the anti-loosening ring (11) is provided with a stepped protrusion (12).

2. A fixing flange for connecting wind turbine blades according to claim 1, characterized in that: The bolt sleeve (6) and the protective cap (5) are connected via a connecting structure (4), wherein the connecting structure (4) comprises a metal tube (401), a rubber ring (402), a clamping block (403) and an L-shaped groove (404); The metal tube (401) is connected to the bolt sleeve (6), the rubber ring (402) is installed in the protective cap (5), the clamping block (403) is installed on the outer wall of the metal tube (401), the L-shaped groove (404) is opened on the rubber ring (402), the L-shaped groove (404) is opened on the metal tube (401), the metal tube (401) is inserted into the rubber ring (402), and the clamping block (403) is clamped in the L-shaped groove (404).

3. A fixing flange for connecting wind turbine blades according to claim 2, characterized in that: The clamping block (403) is provided with a groove (9), a spring assembly (10) is installed in the groove (9), a round ball (8) is installed on the spring assembly (10), an arc groove (7) is provided on the L-shaped groove (404), and the round ball (8) is clamped in the arc groove (7).

4. A fixing flange for connecting wind turbine blades according to claim 3, characterized in that: The spring assembly (10) comprises an outer plate body (104), a middle plate body (103) and an inner plate body (101); the four corners of the outer plate body (104) and the middle plate body (103) are hinged to each other, and springs (102) are hinged to the four corners of the other side of the middle plate body (103).

5. The fixing flange for connecting wind turbine blades according to claim 4, characterized in that: The other ends of the four springs (102) are hinged to the four corners of a side surface of the inner plate body (101).

6. The fixing flange for connecting wind turbine blades according to claim 1, characterized in that: Four weight-reducing grooves (2) are evenly arranged on the inner side wall of the mounting portion (1031), and reinforcing ribs are installed on the upper surface of the mounting portion (1031).

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