Spray device for internal repair of wind turbine blade

Abstract

The present invention relates to the technical field of spray devices, and specifically relates to a spray device for internal repair of a wind turbine blade, comprising: a base ring; extension arms, which are arranged in pairs on the base ring; rotating mechanisms, each of which comprises a driving member arranged at the end of the extension arm, and a wheel mounted on the extension arm and drivingly connected to the driving member; insertion mechanisms, which are arranged on the extension arms; and spray mechanisms, which are arranged on the insertion mechanisms, wherein the insertion mechanisms can extend in the axial direction of the base ring, and extension of the insertion mechanisms can drive the spray mechanisms to move. The insertion mechanisms can extend and retract so as to drive the spray mechanisms to move; since a reinforcing plate divides the internal space of a blade body into two parts, in the embodiments, there are two insertion mechanisms and two spray mechanisms; the two insertion mechanisms can respectively send the two spray mechanisms to two sides of the reinforcing plate, enabling the spray mechanisms to perform spray-coating operations on the inner walls of the blade body on two sides of the reinforcing plate.

Description

A spray device for internal repair of wind turbine blades Technical Field

[0001] This invention relates to the technical field of spraying devices, and more particularly to a spraying device for internal repair of wind turbine blades. Background Technology

[0002] With the sustainable development of new energy technologies, the power system's preference for new energy sources is increasing day by day. In order to respond to the national policy of carbon neutrality and carbon peaking, new energy sources are emerging one after another in the new energy field. However, with the development of the new energy industry, the wind power industry, as the leader in the new energy industry, is also facing the aging and maintenance of some major components of wind turbines over time. For example, the blades, with the accumulation of operating time, inevitably suffer from bird strikes, aging and delamination at the main beam, and large areas of light transmission inside the blades. At this time, it is necessary to use anti-corrosion coatings to repair the damaged parts.

[0003] As shown in Figures 3 and 4, a reinforcing plate 1001 is installed inside the main beam of the blade body 1000 to enhance the strength of the main beam. However, this will hinder the operation of the spraying device, making it difficult for the existing spraying robot to enter the area on both sides of the reinforcing plate 1001 inside the blade body 1000 for spraying operations. Therefore, the present invention proposes a wind turbine blade internal repair spraying device. Summary of the Invention

[0004] In view of the problem that the reinforcing plate inside the blade hinders the spraying operation in the above-mentioned prior art, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a repair spraying device for the inside of wind turbine blades.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a spraying device for internal repair of wind turbine blades, comprising: a base ring; an extension arm, which is arranged in pairs on the base ring; a rotating mechanism, including a driving member disposed at the end of the extension arm and a wheel body mounted on the extension arm and pulsatorically connected to the driving member; a probe mechanism disposed on the extension arm; and a spraying mechanism disposed on the probe mechanism; the probe mechanism is capable of extending along the axial direction of the base ring, and when the probe mechanism extends, it drives the spraying mechanism to move.

[0007] In a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the wheel body is a Mecanum wheel, and the extension arm is telescopic.

[0008] In a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the driving component includes a drive motor mounted on an extension arm and a transmission chain mounted between the drive motor and the wheel.

[0009] As a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the probing mechanism includes multiple splicing parts and a plug-in part slidably disposed on the splicing parts. The end of the splicing part is provided with a fixed shaft, and a connecting pin is rotatably installed between the fixed shafts of two adjacent splicing parts.

[0010] In a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the splicing part is provided with an installation groove, and the insertion part is slidably disposed inside the installation groove; one end of the splicing part is provided with a through groove extending through to the installation groove, and the insertion part is provided with a snap-fit ​​body; the other end of the splicing part is provided with a snap-fit ​​groove; in two adjacent splicing parts, the snap-fit ​​body of one splicing part can pass through the through groove and be inserted into the snap-fit ​​groove of the other splicing part.

[0011] As a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, it further includes a retraction mechanism; which includes a mounting base disposed on the extension arm; a receiving wheel rotatably mounted on the mounting base; and a rotating push wheel rotatably mounted on the mounting base; the rotating push wheel is provided with annularly distributed protruding teeth, and the insertion part is provided with a groove; when the rotating push wheel rotates, the protruding teeth can extend into the groove to push the insertion part to move.

[0012] As a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the mounting base includes a side plate and a support plate connected to the side plate; the retraction mechanism further includes a limiting wheel, and the insertion mechanism bypasses the limiting wheel and fits against the support plate.

[0013] In a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the rotating push wheel is driven by a drive gear, the receiving wheel is driven by a driven gear, and the driven gear meshes with the drive gear.

[0014] As a preferred embodiment of the internal repair spraying device for wind turbine blades of the present invention, a drive shaft is rotatably mounted on the side plate, and the receiving wheel and the driven gear are both mounted on the drive shaft; a connecting groove is provided on the drive shaft, and a connecting block is provided on the radial inner wall of the driven gear, the connecting block extends to the inner side of the connecting groove, and the connecting block can move inside the connecting groove.

[0015] In a preferred embodiment of the internal repair spraying device for wind turbine blades described in this invention, the mounting base is installed on the extension arm via an adjustment mechanism; the adjustment mechanism includes a track fixed to the extension arm; a slider slidably mounted on the track; a power component mounted on the track; and a lead screw rotatably mounted on the track. The power component is rotatably connected to the lead screw, and the slider is threadedly connected to the lead screw.

[0016] The beneficial effects of the present invention are as follows: the probe mechanism can extend and retract, thereby driving the spray mechanism to move. Since the reinforcing plate divides the internal space of the blade body into two parts, in this embodiment, the number of both the probe mechanism and the spray mechanism is two. The two probe mechanisms can respectively send the two spray mechanisms into both sides of the reinforcing plate, so that the spray mechanism can perform spraying operations on the inner wall of the blade body on both sides of the reinforcing plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 is a schematic diagram of the overall structure of the internal repair spraying device for wind turbine blades of the present invention.

[0019] Figure 2 is a schematic diagram of the extension arm and injection mechanism described in this invention.

[0020] Figure 3 is a schematic diagram of the internal repair spraying device and blade structure of the wind turbine blade in this invention.

[0021] Figure 4 is a schematic diagram of the location of the internal repair spraying device and the reinforcing plate of the wind turbine blade in this invention.

[0022] Figure 5 is a schematic diagram of the extension arm and adjustment mechanism in this invention.

[0023] Figure 6 is a schematic diagram of the probe mechanism described in this invention.

[0024] Figure 7 is a schematic diagram of the internal structure of the splicing part and the insertion part described in this invention.

[0025] Figure 8 is a schematic diagram of the take-up and take-down mechanism described in this invention.

[0026] Figure 9 is a schematic diagram of the internal structure of the take-up and take-down mechanism described in this invention.

[0027] Figure 10 is a schematic diagram of the retraction and insertion mechanism and the probe mechanism described in this invention.

[0028] Figure 11 is a diagram showing the clockwise rotation of the rotating push wheel described in this invention.

[0029] Figure 12 is a diagram showing the counterclockwise rotation of the rotating push wheel described in this invention.

[0030] Figure 13 is a schematic diagram of the drive gear and driven gear structure described in this invention.

[0031] Figure 14 is a schematic diagram of the driven gear and transmission shaft structure described in this invention.

[0032] Reference numerals: 100, base ring; 200, extension arm; 300, rotating mechanism; 301, driving component; 301a, drive motor; 301b, transmission chain; 302, wheel body; 400, insertion mechanism; 401, splicing part; 401a, mounting groove; 401b, through groove; 401c, slot; 402, insertion part; 402a, snap-fit ​​body; 403, fixed shaft; 404, connecting pin; 405, groove; 405a, left inclined surface; 405b, right inclined surface; 500, spraying mechanism; 6 00. Retracting / releasing mechanism; 601. Mounting seat; 601a. ​​Side plate; 601b. Support plate; 602. Retracting wheel; 603. Rotating push wheel; 603a. Convex tooth; 604. Limiting wheel; 605. Drive gear; 606. Driven gear; 606a. Connecting block; 607. Drive shaft; 607a. Connecting groove; 608. Drive shaft; 700. Adjusting mechanism; 701. Track; 702. Slider; 703. Power component; 704. Lead screw; 1000. Blade body; 1001. Reinforcing plate. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0037] Example 1, referring to Figures 1 to 5, provides a wind turbine blade internal repair spraying device, including a base ring 100; extension arms 200, which are arranged in pairs on the base ring 100; the number of extension arms 200 is multiple pairs, in this embodiment, the number of extension arms 200 is three pairs, and the included angle between the two extension arms 200 in each pair is 180 degrees. Referring to Figure 3, in use, the base ring 100 as a whole does not contact the blade body 1000, and the base ring 100 is located in an approximately concentric circle position of the blade body 1000. Figure 3 shows the positional relationship between the blade body 1000 and the base ring 100.

[0038] Referring to Figures 1 and 2, the internal repair spraying device for wind turbine blades includes a rotating mechanism 300, which includes a drive member 301 located at the end of the extension arm 200 and a wheel 302 mounted on the extension arm 200 and connected to the drive member 301 for transmission. Referring to Figure 3, the extension arm 200 contacts the inner wall of the blade body 1000 through the rotating mechanism 300. The drive member 301 can drive the wheel 302 to rotate, allowing the entire extension arm 200 and the base ring 100 to rotate inside the blade body 1000.

[0039] Please refer to Figure 2. The probe mechanism 400 is disposed on the extension arm 200, and the spray mechanism 500 is disposed on the probe mechanism 400. The probe mechanism 400 can extend along the axial direction of the base ring 100. When the probe mechanism 400 extends, it drives the spray mechanism 500 to move.

[0040] The spraying mechanism 500 is used to spray anti-corrosion coatings. A coating container and a compressed air container can be mounted on the base ring 100. The coating container and the compressed air container are connected to the spraying mechanism 500 to provide the spraying material and spraying power to the spraying mechanism 500.

[0041] Referring to Figures 3 and 4, in this embodiment, the probe mechanism 400 is retractable, thereby driving the spraying mechanism 500 to move. Because there is a reinforcing plate 1001 inside the blade body 1000, the base ring 100 and the extension arm 200 cannot pass through the reinforcing plate 1001. Since the reinforcing plate 1001 divides the internal space of the blade body 1000 into two parts, in this embodiment, the number of both the probe mechanism 400 and the spraying mechanism 500 is two. The two probe mechanisms 400 can respectively send the two spraying mechanisms 500 into both sides of the reinforcing plate 1001, so that the spraying mechanism 500 can perform spraying operations on the inner wall of the blade body 1000 located on both sides of the reinforcing plate 1001. Through this method, manual entry into the blade body 1000 can be replaced, improving the safety factor of blade body 1000 maintenance.

[0042] Specifically, wheel 302 is a Mecanum wheel, and the extension arm 200 is telescopic. Since wheel 302 is a Mecanum wheel, when multiple wheel bodies 302 come into contact with the inner wall of blade body 1000, wheel body 302 can drive extension arm 200 and base ring 100 to move axially in a spiral direction. That is, it rotates around the center of base ring 100 and moves along the axial direction of blade body 1000. The rotation can adjust the position of extension arm 200, thereby adjusting the position of injection mechanism 500, so that injection mechanism 500 can be aligned with different positions on the inner wall of blade body 1000.

[0043] Referring to Figures 3 and 4, the extension and retraction of the probe mechanism 400 allows the spray mechanism 500 to move axially parallel to the central axis of the blade body 1000. The extension arm 200 drives the spray mechanism 500 to rotate, and the probe mechanism 400 drives the spray mechanism 500 to move, thereby allowing the spray mechanism 500 to be aligned with the position on the inner wall of the blade body 1000 that needs to be repaired.

[0044] Referring to Figure 5, the drive unit 301 further includes a drive motor 301a mounted on the extension arm 200, and a transmission chain 301b mounted between the drive motor 301a and the wheel 302. The rotation of the drive motor 301a drives the transmission chain 301b to rotate, thereby driving the Mecanum wheel to rotate.

[0045] Example 2, referring to Figures 4 to 7, differs from the first example in that: Referring to Figure 4, during use, the base ring 100 needs to be as close as possible to the reinforcing plate 1001 so that when the insertion mechanism 400 extends, it can deliver the spraying mechanism 500 to a deeper position. To allow the base ring 100 to get closer to the reinforcing plate 1001, the initial length of the insertion mechanism 400 needs to be short enough so that when the base ring 100 rotates closer to the reinforcing plate 1001, the insertion mechanism 400 will not interfere with the reinforcing plate 1001. Therefore, referring to Figure 6, in this example, the insertion mechanism 400 includes multiple splicing parts 401 and insertion parts 402 slidably disposed on the splicing parts 401. The ends of the splicing parts 401 are provided with fixed shafts 403, and adjacent splicing parts 401... A connecting pin 404 is rotatably installed between fixed shafts 403. Two adjacent splicing parts 401 can be connected by a plug-in part 402. The connecting pin 404 and the fixed shaft 403 are rotatably connected. When the plug-in part 402 of the splicing part 401 can be inserted into the interior of the adjacent splicing part 401, the multiple splicing parts 401 can be arranged in a curved manner. Before elongation, the overall length of the probing mechanism 400 composed of multiple splicing parts 401 is small, so that the base ring 100 can be as close as possible to the reinforcing plate 1001. When elongated, the plug-in part 402 of the splicing part 401 is inserted into the inside of the adjacent splicing part 401, so that the multiple splicing parts 401 can be arranged in a straight line, and the overall length increases, driving the spraying mechanism 500 to move, so that the spraying mechanism 500 extends into both sides of the reinforcing plate 1001.

[0046] Specifically, referring to Figure 7, the splicing part 401 has a mounting groove 401a, and the insertion part 402 is slidably disposed inside the mounting groove 401a; one end of the splicing part 401 has a through groove 401b, which extends through to the mounting groove 401a, and the insertion part 402 has a snap-fit ​​body 402a; the other end of the splicing part 401 has a snap-fit ​​groove 401c; in two adjacent splicing parts 401, the snap-fit ​​body 402a of one splicing part 401 can pass through the through groove 401b and be inserted into the snap-fit ​​groove 401c of the other splicing part 401.

[0047] When two adjacent splicing parts 401 are in a straight line arrangement, the insertion part 402 moves in the direction of the through groove 401b inside the mounting groove 401a, which can drive the snap-fit ​​body 402a to pass through the through groove 401b and insert into the snap-fit ​​groove 401c of the adjacent splicing part 401, so that the two splicing parts 401 can maintain a straight line arrangement and will not bend, thereby stably supporting the spraying mechanism 500.

[0048] The rest of the structure is the same as in Example 1.

[0049] Example 3, referring to Figures 8 to 12, differs from the above examples in that: referring to Figures 8 and 9, the internal repair spraying device for wind turbine blades further includes a retraction mechanism 600; it includes a mounting base 601, which is disposed on the extension arm 200; a receiving wheel 602, which is rotatably mounted on the mounting base 601; and a rotating push wheel 603, which is rotatably mounted on the mounting base 601. The rotating push wheel 603 is provided with annularly distributed protruding teeth 603a, and the insertion part 402 is provided with a groove 405. When the rotating push wheel 603 rotates, the protruding teeth 603a can extend into the groove 405 to push the insertion part 402 to move. The mounting base 601 is used to provide an installation position. A motor structure can be provided on the mounting base 601 and is connected to the rotating push wheel 603 in a transmission manner. The motor structure can drive the rotating push wheel 603 to rotate. As shown in Figure 11, the groove 405 has two inclined surfaces adjacent to the bottom of the groove, namely the left inclined surface 405a and the right inclined surface 405b. When the push wheel 603 rotates clockwise, the protruding tooth 603a abuts against the left inclined surface 405a and pushes the insertion part 402 to move through the left inclined surface 405a, so that the snap-fit ​​body 402a is inserted into the slot 401c of the adjacent splicing part 401. As the push wheel 603 continues to rotate clockwise, the splicing part 401 can be pushed away from the extension arm 200 through the insertion part 402. The clockwise rotation of the push wheel 603 can insert one splicing part 401 after another through the insertion part 402. The splicing part 401 after insertion extends out from the inside of the mounting base 601, so as to achieve the effect of the probe mechanism 400 extending and thus driving the spray mechanism 500 to extend.

[0050] As shown in Figure 12, when the push wheel 603 rotates counterclockwise, the protruding tooth 603a abuts against the right inclined surface 405b, and will first push the insertion part 402 to move through the right inclined surface 405b, so that the snap-fit ​​body 402a disengages from the slot 401c inside the adjacent splicing part 401. As the push wheel 603 rotates counterclockwise, the insertion relationship between the splicing parts 401 can be released one by one, so that the splicing parts 401 that have been released from the insertion relationship can be wrapped around the outside of the storage wheel 602 for storage.

[0051] A magnetic structure can be provided on the groove wall of the groove 405 away from the through groove 401b. When the insertion part 402 is retracted, it can provide a certain magnetic force to the insertion part 402 so that the insertion part 402 can maintain its position.

[0052] With the above solution, when the probe mechanism 400 needs to extend to push the spray mechanism 500, the motor structure drives the rotating push wheel 603 to rotate clockwise, so that the splicing parts 401 can extend out from the mounting base 601 in a straight line, thereby achieving the effect of pushing the spray mechanism 500.

[0053] After the inner wall of the blade body 1000 is sprayed, the motor structure drives the rotating push wheel 603 to rotate counterclockwise, which can release the insertion relationship between the splicing parts 401, so that the angle between adjacent splicing parts 401 can change and can be wrapped around the outside of the storage wheel 602.

[0054] Specifically, referring to Figures 9 and 10, the mounting base 601 includes a side plate 601a and a support plate 601b connected to the side plate 601a; the retracting mechanism 600 also includes a limiting wheel 604, and the insertion mechanism 400 bypasses the limiting wheel 604 and fits against the support plate 601b. The rotating push wheel 603 and the storage wheel 602 are both rotatably mounted on the side plate 601a. ​​The support plate 601b can form a support under the splicing part 401 when the rotating push wheel 603 contacts and pushes the insertion part 402, so that each splicing part 401 is pushed by the tooth 603a when passing through the gap between the support plate 601b and the rotating push wheel 603.

[0055] The purpose of the limiting wheel 604 is to guide the movement path of the splicing part 401, so that the splicing part 401 released from the storage wheel 602 will reach the position that is in contact with the support plate 601b under the guidance of the limiting wheel 604.

[0056] The rest of the structure is the same as in Example 2.

[0057] Example 4, referring to Figures 9 and 13, differs from the above examples in that: the rotating push wheel 603 is driven by the drive gear 605, and the storage wheel 602 is driven by the driven gear 606. The driven gear 606 meshes with the drive gear 605. The rotating push wheel 603 is rotatably mounted on the side plate 601a via the drive shaft 608. The motor structure drives the drive shaft 608 to rotate, thereby driving the rotating push wheel 603 to rotate synchronously. The drive gear 605 is also mounted on the drive shaft 608. When the drive shaft 608 rotates, it drives the drive gear 605 to rotate synchronously. The drive gear 605 can drive the driven gear 606 to rotate, thereby causing the storage wheel 602 to rotate. Therefore, the storage wheel 602 itself will also rotate. When the splicing part 401 is inserted and extended, the rotation of the storage wheel 602 releases the splicing part 401 wrapped around its outer side. When the splicing part 401 is retracted and released from the insertion state, the rotation of the storage wheel 602 can rewrap the retracted splicing part 401.

[0058] Specifically, please refer to Figures 13 and 14. A drive shaft 607 is rotatably mounted on the side plate 601a. ​​The storage wheel 602 and the driven gear 606 are both mounted on the drive shaft 607. A connecting groove 607a is provided on the drive shaft 607. A connecting block 606a is provided on the radial inner wall of the driven gear 606. The connecting block 606a extends to the inner side of the connecting groove 607a and can move inside the connecting groove 607a.

[0059] When switching between the extended and retracted states, the rotating push wheel 603 will change from clockwise to counterclockwise rotation. If the retracting wheel 602 rotates during the switching process, it may pull on the splicing part 401. If the splicing part 401 is displaced without the push of the tooth 603a, the tooth 603a will not be able to retract to the right inclined surface 405b when rotating counterclockwise. Therefore, a connecting groove 607a and a connecting block 606a are provided. The connecting groove 607a is opened on the radial side of the transmission shaft 607, and the connecting block 606a is located on the inner wall of the driven gear 606. In this way, when the driven gear 606 rotates clockwise, the connecting block 606a abuts against the first end of the connecting groove 607a and pushes the transmission shaft 605b. When the drive shaft 607 rotates clockwise, the connecting block 606a abuts against the second end of the connecting groove 607a, pushing the drive shaft 607 to rotate counterclockwise. However, when the driven gear 606 changes from clockwise to counterclockwise rotation, the connecting block 606a needs to move from the first end to the second end before it can push the drive shaft 607. The same applies when changing from counterclockwise to clockwise rotation. In this way, when the rotation direction of the rotating push wheel 603 changes, it can be ensured that the receiving wheel 602 will not rotate within a certain angle of rotation, thereby ensuring that the convex tooth 603a can smoothly switch between the two states of abutting against the left inclined surface 405a or against the right inclined surface 405b, so that the entire device can operate smoothly.

[0060] The rest of the structure is the same as in Example 3.

[0061] Example 5, referring to Figures 2 and 5, differs from the above examples in that: the mounting base 601 is mounted on the extension arm 200 via an adjustment mechanism 700; the adjustment mechanism 700 includes: a track 701 fixed to the extension arm 200; a slider 702 slidably mounted on the track 701; a power component 703 mounted on the track 701; and a lead screw 704 rotatably mounted on the track 701. The power component 703 is rotatably connected to the lead screw 704, and the slider 702 is threadedly connected to the lead screw 704.

[0062] The track 701 is arranged along the axial direction of the extension arm 200, and the slider 702 slides on the track 701, which allows the injection mechanism 500 to adjust its position along the extension arm 200, thereby adjusting the distance between the injection mechanism 500 and the inner wall of the blade body 1000 to adapt to different injection requirements.

[0063] The slider 702 is driven by a power component 703, which can be a motor that drives the lead screw 704 to rotate, thereby adjusting the position of the slider 702. This, in turn, adjusts the distance between the injection mechanism 500 and the inner wall of the blade body 1000.

[0064] The rest of the structure is the same as in Example 4.

[0065] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0066] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0067] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A spray device for internal repair of wind turbine blades, characterized in that: include, Base ring (100); Extension arms (200) are arranged in pairs on the base ring (100); The rotating mechanism (300) includes a drive member (301) disposed at the end of the extension arm (200) and a wheel (302) mounted on the extension arm (200) and connected to the drive member (301) in a transmission manner; An insertion mechanism (400) is provided on the extension arm (200); and, A spraying mechanism (500) is provided on the probing mechanism (400); The probe mechanism (400) can extend along the axial direction of the base ring (100), and when the probe mechanism (400) extends, it drives the spray mechanism (500) to move.

2. The internal repair spraying device for wind turbine blades as described in claim 1, characterized in that: The wheel (302) is a Mecanum wheel, and the extension arm (200) is telescopic.

3. The internal repair spraying device for wind turbine blades as described in claim 1 or 2, characterized in that: The drive unit (301) includes a drive motor (301a) mounted on the extension arm (200) and a transmission chain (301b) mounted between the drive motor (301a) and the wheel (302).

4. The internal repair spraying device for wind turbine blades as described in claim 3, characterized in that: The probe mechanism (400) includes multiple splicing parts (401) and a plug-in part (402) slidably disposed on the splicing parts (401). The end of the splicing part (401) is provided with a fixed shaft (403), and a connecting pin (404) is rotatably installed between the fixed shafts (403) of two adjacent splicing parts (401). Two adjacent splicing parts (401) can be connected by a plug-in part (402).

5. The internal repair spraying device for wind turbine blades as described in claim 4, characterized in that: The splicing part (401) is provided with a mounting groove (401a), and the plug-in part (402) is slidably disposed on the inner side of the mounting groove (401a); One end of the splicing part (401) is provided with a through groove (401b), which extends through to the mounting groove (401a), and the plug-in part (402) is provided with a snap-fit ​​body (402a); The other end of the splicing part (401) is provided with a slot (401c); In two adjacent splicing parts (401), the snap-fit ​​body (402a) of one splicing part (401) can pass through the through groove (401b) and be inserted into the slot (401c) of the other splicing part (401).

6. The internal repair spraying device for wind turbine blades as described in claim 5, characterized in that: It also includes a receiving and dispensing mechanism (600); It includes, A mounting base (601) is provided on the extension arm (200); Storage wheel (602), which is rotatably mounted on the mounting base (601); Rotate the push wheel (603), which is rotatably mounted on the mounting base (601); The rotating push wheel (603) is provided with annularly distributed protruding teeth (603a), and the insertion part (402) is provided with a groove (405). When the rotating push wheel (603) rotates, the protruding teeth (603a) can extend into the groove (405) to push the insertion part (402) to move.

7. The internal repair spraying device for wind turbine blades as described in claim 6, characterized in that: The mounting base (601) includes a side plate (601a) and a support plate (601b) connected to the side plate (601a); The retracting mechanism (600) also includes a limiting wheel (604), and the probing mechanism (400) bypasses the limiting wheel (604) and fits against the support plate (601b).

8. The internal repair spraying device for wind turbine blades as described in claim 7, characterized in that: The rotating push wheel (603) is driven by the drive gear (605), and the receiving wheel (602) is driven by the driven gear (606). The driven gear (606) meshes with the drive gear (605).

9. The internal repair spraying device for wind turbine blades as described in claim 8, characterized in that: A drive shaft (607) is rotatably mounted on the side plate (601a), and the storage wheel (602) and the driven gear (606) are both mounted on the drive shaft (607); The drive shaft (607) has a connecting groove (607a), and the driven gear (606) has a connecting block (606a) on its radial inner wall. The connecting block (606a) extends to the inner side of the connecting groove (607a) and can move inside the connecting groove (607a).

10. The internal repair spraying device for wind turbine blades as described in claim 6 or 9, characterized in that: The mounting base (601) is mounted on the extension arm (200) via an adjustment mechanism (700); the adjustment mechanism (700) includes, The track (701) is fixed to the extension arm (200); A slider (702) is slidably mounted on the track (701); A power component (703) is mounted on the track (701); A lead screw (704) is rotatably mounted on a track (701), a power component (703) is rotatably connected to the lead screw (704), and a slider (702) is threadedly connected to the lead screw (704).

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