A remote spraying device for wind turbine blades

Abstract

The present invention relates to the field of blade repair technology, and in particular to a long-distance spraying device for wind turbine blades, comprising: a bearing component, including an unmanned aerial vehicle body, a supporting platform arranged on the unmanned aerial vehicle body and a mechanical arm installed on the supporting platform; and a fixing component, including a supporting frame connected to the mechanical arm; and a blocking component, including a storage tray rotatably arranged in the supporting frame and a spraying channel opened on the outer wall of the storage tray and distributed in a circular array; and a spraying component. When the repair device provided by the present invention sprays the blade with an anti-corrosion material, the spraying operation can be completed by aligning the spraying plate with the spraying channel. After the spraying operation is completed, the spraying plate is rotated to drive the storage tray to rotate synchronously, thereby avoiding the dripping of anti-corrosion material from the injection port, effectively solving the problems existing in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of blade repair, in particular to a long-distance spraying device for blades of a wind turbine generator. Background Art

[0002] With the development of the new energy industry, mankind's use of renewable energy has entered a new era. In the field of wind power generation, the conversion and utilization of wind energy requires the conversion of wind rotors and blades to convert wind energy into mechanical energy. After the mechanical energy is converted inside the wind turbine system, it is finally output as the electrical energy we need.

[0003] Due to the conversion of wind energy, the wind rotor blades will cause certain wear and damage. In foreign countries, maintenance companies will use safety ropes to lift the blade maintenance unmanned vehicle in the air, adjust the angle so that the tires of the unmanned vehicle coincide with the surface of the blade maintenance, and then through the blade pitch change, the safety rope contraction and wheel movement, the spraying system and grinding system below cooperate to complete the repair of the damaged surface of the blade.

[0004] At present, there are two ways to repair wind turbines in my country: manual repair by climbing up high, and spray repair by industrial drones. However, drone spray repair has certain disadvantages, especially the nozzle used for spraying is prone to leakage.

[0005] In the process of spraying anti-corrosion materials, dripping from the nozzle may bring many disadvantages. First, dripping will cause uneven coating, affect the quality and anti-corrosion effect of the anti-corrosion layer, and may reduce the service life of the coating. Secondly, dripping from the nozzle may also cause waste of materials and increase construction costs. In addition, if the dripping anti-corrosion materials are not properly handled, they may pollute the surrounding environment. In addition, dripping from the nozzle may form small droplets or sags on the surface of the coating, which not only affects the appearance quality of the coating, but may also become the source of coating defects. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a remote spraying device for wind turbine blades, comprising: a bearing assembly, comprising a drone body, a support platform arranged on the drone body, and a mechanical arm installed on the support platform; and a fixing assembly, comprising a support frame connected to the mechanical arm; and a blocking assembly, comprising a storage tray rotatably arranged in the support frame and spraying channels opened on the outer wall of the storage tray and distributed in a circumferential array; and a spraying assembly, comprising a spraying plate rotatably arranged in the storage tray and a spraying port integrally formed on the outer wall of the spraying plate;

[0008] Among them, when the spray port is aligned with the spray channel, the repair liquid can be sprayed out by the spray port, and when the spray plate rotates in the storage tray, the storage tray will also rotate accordingly, thereby blocking the leakage of the spray liquid.

[0009] As a preferred solution of the long-distance spraying device for wind turbine blades described in the present invention, it also includes a liquid storage component, including a liquid storage tank fixedly mounted on the support frame, and a support frame screwed to the outer wall of the liquid storage tank for supporting the spraying plate to rotate.

[0010] As a preferred solution of the long-distance spraying device for wind turbine blades of the present invention, a liquid inlet pipe for circulating repair liquid is arranged between the liquid storage tank and the spraying plate, and a transmission wheel is arranged on the outer wall of the spraying plate.

[0011] As a preferred solution of the long-distance spraying device for wind turbine blades described in the present invention, wherein: a circular array of limit blocks is provided on the inner wall of the storage tray, and the inner wall of the storage tray is separated by a plurality of the limit blocks into a transmission channel and a flow cavity connected to the spraying channel, and the transmission channel is movably connected to the transmission wheel.

[0012] As a preferred solution of the long-distance spraying device for wind turbine blades described in the present invention, a flow channel is penetrated through the inner wall of the limit block, a supporting block movably connected to the outer wall of the spray plate is integrally formed on the inner wall of the storage tray, and a transmission gear is also arranged on the same axial direction of the storage tray.

[0013] As a preferred solution of the long-distance spraying device for wind turbine blades described in the present invention, a connecting shaft for supporting the spraying plate for rotation is provided at the connection between the spraying plate and the liquid storage tank, and the outer wall of the connecting shaft is sleeved with a matching gear meshing with the transmission gear.

[0014] As a preferred solution of the long-distance spraying device for wind turbine blades of the present invention, the outer wall of the liquid storage tank is provided with a visual window, and the outer wall of the liquid storage tank is also provided with a filling port.

[0015] As a preferred solution of the long-distance spraying device for wind turbine blades of the present invention, the inner wall of the support frame is provided with cleaning cotton for wiping the spraying channel, and the outer wall of the support frame is also screwed with a fixing plate for fixing the liquid storage tank.

[0016] As a preferred solution of the long-distance spraying device for wind turbine blades of the present invention, the end surface of the storage tray is detachably provided with a cover plate for sealing its inner cavity.

[0017] Beneficial effects of the present invention: When the repair device provided by the present invention is used to spray anti-corrosion materials on blades, the spraying operation can be completed by aligning the spray plate with the spray channel. After the spraying operation is completed, the spray plate is rotated to drive the storage plate to rotate synchronously, thereby avoiding the dripping of anti-corrosion materials from the spray port, effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the fixing component in the present invention.

[0021] Figure 3 It is a schematic diagram of the structural connection between the blocking component and the spraying component in the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the blocking component in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the spraying assembly in the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the liquid storage component in the present invention.

[0025] In the figure: 100, bearing assembly; 101, drone body; 102, supporting platform; 103, mechanical arm; 200, fixing assembly; 201, supporting frame; 201a, cleaning cotton; 202, fixing plate; 300, blocking assembly; 301, storage tray; 301a, spray channel; 301b, transmission channel; 301c, cover plate; 302, limit block; 302a, circulation channel; 302b, circulation cavity; 303, supporting block; 304, transmission gear; 400, spray assembly; 401, spray plate; 401a, spray port; 402, matching gear; 402a, connecting shaft; 403, transmission wheel; 500, liquid storage assembly; 501, liquid storage tank; 501a, visual window; 501b, filling port; 502, supporting frame; 502a, liquid inlet pipe. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, reference Figures 1 to 6 , which is the first embodiment of the present invention, provides a long-distance spraying device for wind turbine blades. When spraying the anti-corrosion material on the blades, the spraying operation can be completed by aligning the spraying plate 401 with the spraying channel 301a. After the spraying operation is completed, the spraying plate 401 is rotated, and the storage tray 301 is driven to rotate synchronously at the same time, thereby avoiding the dripping of anti-corrosion material from the spray port.

[0030] Specifically, the supporting assembly 100 includes a drone body 101, a support platform 102 disposed on the drone body 101, and a robotic arm 103 installed on the support platform 102; wherein, the drone body 101 is industrial-grade, and has flight function, aerial photography, infrared limit, radar limit and visual capture functions; and the robotic arm 103 can achieve six degrees of freedom. The above contents are clearly recorded in the prior art and will not be elaborated on here.

[0031] The fixing assembly 200 includes a support frame 201 connected to the robot arm 103 ; wherein the support frame 201 plays a fixing role.

[0032] The blocking assembly 300 includes a storage tray 301 rotatably disposed in the support frame 201 and spray channels 301a opened on the outer wall of the storage tray 301 and distributed in a circumferential array; Figure 4 It can be seen that in this embodiment, the number of the spraying channels 301 a is 4, and the storage tray 301 as a whole can rotate within the support frame 201 , that is, the support frame 201 will provide the storage tray 301 with a movement stroke.

[0033] The spray assembly 400 includes a spray plate 401 rotatably disposed in the storage tray 301 and a spray port 401a integrally formed on the outer wall of the spray plate 401; wherein, there is a cavity in the spray plate 401, and the repair liquid, i.e., the anti-corrosion material, will pass through the cavity and be sprayed out from the spray port 401a.

[0034] When the spray port 401a is aligned with the spray channel 301a, the repair liquid can be sprayed out by the spray port 401a, and when the spray plate 401 rotates in the storage tray 301, the storage tray 301 will also rotate accordingly, thereby blocking the leakage of the repair liquid.

[0035] In summary, when performing a spraying operation, keep the spray port 401a aligned with the spray channel 301a to perform the spraying operation. After the spraying operation is completed, rotate the storage tray 301 so that the spray channel 301a on the right is rotated ninety degrees counterclockwise. While preventing the spray channel 301a from leaking, the spray channel 301a located at the bottom can be rotated to the right to facilitate subsequent spraying operations.

[0036] Example 2, reference Figures 1 to 6 , which is the second embodiment of the present invention, is different from the previous embodiment in that a method for rotating the storage tray 301 is provided.

[0037] Specifically, it also includes a liquid storage assembly 500, including a liquid storage tank 501 fixed on the support frame 201, and a support frame 502 screwed to the outer wall of the liquid storage tank 501 for supporting the spray plate 401 for rotation. Among them, a pressurizing device is also provided outside the liquid storage tank 501, which can input the repair liquid in the liquid storage tank 501 into the spray plate 401.

[0038] A liquid inlet pipe 502a for the circulation of repair liquid is arranged between the liquid storage tank 501 and the spraying plate 401, and a transmission wheel 403 is arranged on the outer wall of the spraying plate 401. The transmission wheel 403 is used to drive the storage tray 301 to rotate.

[0039] The inner wall of the storage tray 301 is provided with a circumferential array of limit blocks 302, and the inner wall of the storage tray 301 is separated by a plurality of limit blocks 302 into a transmission channel 301b and a flow cavity 302b connected to the spray channel 301a, and the transmission channel 301b is movably connected to the transmission wheel 403. The number of limit blocks 302 is consistent with that of the spray channel 301a, which is 4 in this embodiment. When the spray plate 401 rotates, the transmission wheel 403 will be displaced in the transmission channel 301b, pushing the storage tray 301 to rotate.

[0040] For details, see Figure 4It can be seen that the transmission channel 301b is composed of four straight grooves and an annular groove, and one end of each of the four straight grooves is connected to the annular groove at the center. When the spray plate 401 rotates, the transmission wheel 403 will move from one of the straight grooves to another straight groove adjacent to the straight groove, and in this process, the transmission wheel 403 will drive the storage tray 301 to rotate.

[0041] The inner wall of the limit block 302 is provided with a flow channel 302a, the inner wall of the storage tray 301 is integrally formed with a support block 303 movably connected to the outer wall of the spray plate 401, and a transmission gear 304 is also provided on the same axial direction of the storage tray 301. Among them, the support block 303 is arc-shaped on the side wall close to the spray plate 401, Figure 3 It can be seen that the support block 303 will ensure the movement stability of the spray plate 401.

[0042] It should be noted that, since the support block 303 is integrally formed on the storage tray 301, the support block 303 and the storage tray 301 remain relatively stationary. When the spray plate 401 rotates and pushes the storage tray 301 to rotate, the outer wall of the spray plate 401 will slide with each support block 303, thereby ensuring that the movement trajectory of the storage tray 301 will not deviate.

[0043] The circulation channel 302a can prevent individual circulation cavities 302b from being filled with leaked anti-corrosion material and being unable to continue collecting the leaked liquid. The setting of the circulation channel 302a can facilitate the circulation of the anti-corrosion material between the circulation cavities 302b.

[0044] A connecting shaft 402a for supporting the spraying plate 401 to rotate is provided at the connection between the spraying plate 401 and the liquid storage tank 501, and the outer wall of the connecting shaft 402a is sleeved with a matching gear 402 meshing with the transmission gear 304. When the transmission gear 304 rotates, the matching gear 402 rotates synchronously due to the meshing between the gears.

[0045] It should be noted that, in order to ensure that the repair liquid can smoothly enter the spray plate 401, the connecting shaft 402a is also the rotation axis of the spray plate 401, and a through hole is provided in the connecting shaft 402a. Figure 5 It can be seen that it is used to input the repair liquid into the spray plate 401.

[0046] In summary, when performing blade repair work, the entire device is brought to a designated location through the carrying assembly 100, and the repair liquid in the liquid storage tank 501 is input into the spray plate 401 and then discharged from the spray channel 301a.

[0047] After the spraying operation is completed, in order to prevent the repair liquid from leaking, the transmission gear 304 can be controlled to rotate. Under the meshing between the gears, the connecting shaft 402a will also drive the spray plate 401 to rotate synchronously. During the rotation of the spray plate 401, the transmission wheel 403 will move in the transmission channel 301b along with the rotation of the spray plate 401, thereby driving the storage tray 301 to rotate.

[0048] When the storage tray 301 rotates counterclockwise, the spray channel 301a that has just been sprayed will be rotated to an upward direction so that the dripping repair liquid can flow back and flow into the circulation cavity 302b for storage.

[0049] It should be noted that a micro stepper motor is disposed on the fixed plate 202 , and the output end of the stepper motor is connected to the transmission gear 304 . When the stepper motor is started, the transmission gear 304 meshes with the matching gear 402 , causing the connecting shaft 402 a to rotate.

[0050] Example 3, reference Figures 1 to 6 , which is the third embodiment of the present invention. Different from the previous embodiment, the problem of drip flow is further optimized and repaired.

[0051] Specifically, the outer wall of the liquid storage tank 501 is provided with a visual window 501a, and the outer wall of the liquid storage tank 501 is also provided with a filling port 501b. The visual window 501a is convenient for the staff to understand the remaining capacity of the repair liquid in the liquid storage tank 501. The filling port 501b is used to add the repair liquid into the liquid storage tank 501.

[0052] The inner wall of the support frame 201 is provided with a cleaning cotton 201a for wiping the spray channel 301a, and the outer wall of the support frame 201 is also screwed with a fixing plate 202 for fixing the liquid storage tank 501. The end surface of the storage tray 301 is detachably provided with a cover plate 301c for sealing its inner cavity. When the storage tray 301 rotates and rotates the spray channel 301a that has just finished the spraying operation to the top, the cleaning cotton 201a will wipe its outside to achieve a cleaning effect. The fixing plate 202 is used to ensure that the liquid storage component 500 and the fixing component 200 remain relatively still.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A remote spraying device for wind turbine blades, characterized in that: include, A bearing assembly (100) comprising a drone body (101), a support platform (102) disposed on the drone body (101), and a mechanical arm (103) mounted on the support platform (102); and, a fixing assembly (200), comprising a support frame (201) connected to the mechanical arm (103); and The blocking component (300) comprises a storage tray (301) rotatably disposed in the support frame (201) and spraying channels (301a) opened on the outer wall of the storage tray (301) and distributed in a circular array; and A spraying assembly (400) comprising a spraying plate (401) rotatably disposed in the storage tray (301) and a spraying port (401a) integrally formed on the outer wall of the spraying plate (401); When the spray port (401a) is aligned with the spray channel (301a), the repair liquid can be sprayed out by the spray port (401a), and when the spray plate (401) rotates in the storage tray (301), the storage tray (301) will also rotate accordingly, thereby blocking the leakage of the repair liquid; It also includes a liquid storage assembly (500), including a liquid storage box (501) fixedly mounted on the support frame (201), and a support frame (502) screwed to the outer wall of the liquid storage box (501) for supporting the spray plate (401) to rotate; A liquid inlet pipe (502a) for circulation of repair liquid is provided between the liquid storage tank (501) and the spray plate (401), and a transmission wheel (403) is provided on the outer wall of the spray plate (401); The inner wall of the storage tray (301) is provided with a circumferential array of limit blocks (302); the inner wall of the storage tray (301) is divided by a plurality of the limit blocks (302) into a transmission channel (301b) and a flow cavity (302b) connected to the spray channel (301a); and the transmission channel (301b) is movably connected to the transmission wheel (403).

2. The long-distance spraying device for wind turbine blades according to claim 1, characterized in that: The inner wall of the limit block (302) is provided with a circulation channel (302a) extending therethrough, the inner wall of the storage tray (301) is integrally formed with a support block (303) movably connected to the outer wall of the spray plate (401), and a transmission gear (304) is also provided on the same axial direction of the storage tray (301).

3. The long-distance spraying device for wind turbine blades according to claim 2, characterized in that: A connecting shaft (402a) for supporting the spray plate (401) to rotate is provided at the connection between the spray plate (401) and the liquid storage tank (501), and a matching gear (402) meshing with the transmission gear (304) is sleeved on the outer wall of the connecting shaft (402a).

4. The long-distance spraying device for wind turbine blades according to claim 3, characterized in that: The outer wall of the liquid storage tank (501) is provided with a visual window (501a), and the outer wall of the liquid storage tank (501) is also provided with a filling port (501b).

5. The long-distance spraying device for wind turbine blades according to claim 1, characterized in that: The inner wall of the support frame (201) is provided with a cleaning cotton (201a) for wiping the spray channel (301a), and the outer wall of the support frame (201) is also screwed with a fixing plate (202) for fixing the liquid storage tank (501).

6. The long-distance spraying device for wind turbine blades according to claim 1, characterized in that: The end surface of the storage tray (301) is detachably provided with a cover plate (301c) for sealing the inner cavity thereof.

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