Wind power blade roller coating system

Abstract

The invention relates to the field of wind power blades, and discloses a wind power blade roller coating system which comprises a moving device, a roller coating device and a roller coating device. A paint supply device; the roller coating tool is installed on the mechanical arm and connected with the paint supply device through a pipeline, the roller sets comprise a plurality of roller mechanisms arranged at intervals in the axial direction, and the roller mechanisms of the adjacent roller sets are arranged in a staggered mode in the axial direction; the pressure detection pieces are connected with the roller and used for detecting the pressure of the roller in the radial direction and sending a pressure signal, and the first linear moving piece is connected with the roller and used for receiving the pressure signal and adjusting the radial displacement of the roller so that the pressure value of each pressure detection piece can be within the threshold value range. The roller coating device is used for solving the problem of poor roller coating uniformity in the prior art. The contact pressure between the roller and the wind power blade is detected through the pressure detection pieces, so that the first linear moving piece is controlled to adjust the radial displacement of the roller, the pressure value of each pressure detection piece is within the threshold value range, and the roller coating uniformity is improved.

Description

Technical Field

[0001] The present application belongs to the field of wind turbine blades, and in particular, relates to a roller coating system for wind turbine blades. Background Art

[0002] Wind turbine blades operate at high altitudes and in all-weather conditions, and are often affected by sunlight, dust, lightning, rainstorms and other natural climates, and the operating environment is extremely harsh. The main purpose of painting is to form a protective film on the surface of the blades to effectively prevent these environmental factors from eroding the blades, thereby protecting the integrity and performance of the blades. This is especially true in harsh wind and sand impact areas, strong ultraviolet radiation, large temperature differences between day and night, and high humidity, high salt and alkali corrosion offshore wind farm environments.

[0003] The existing painting methods are mainly spraying and roller coating. Roller coating has the advantages of less paint waste, less environmental pollution and low cost. However, the existing roller coating equipment has low painting efficiency and poor roller coating uniformity. Summary of the invention

[0004] An embodiment of the present application provides a wind turbine blade roller coating system, which can control the pressure of each roller mechanism and the wind turbine blade to be within a threshold range through a pressure detection component and a first linear moving component, thereby achieving roller coating uniformity and improving roller coating efficiency.

[0005] The embodiment of the present application provides a wind turbine blade roller coating system, comprising: a moving device, including a traveling vehicle and a manipulator installed on the traveling vehicle; a paint supplying device, installed on the traveling vehicle; a roller coating tool, installed on the manipulator and connected to the paint supplying device pipeline, the roller coating tool comprising a plurality of roller groups arranged side by side in the radial direction, the roller group comprising a plurality of roller mechanisms arranged at intervals in the axial direction, and the roller mechanisms of adjacent roller groups are staggered in the axial direction; the roller mechanisms comprise rollers and an adjusting component connected in the radial direction, the adjusting component comprises a pressure detecting member and a first linear moving member in communication connection, the pressure detecting member is connected to the roller for detecting the pressure of the roller in the radial direction and sending a pressure signal, the first linear moving member is connected to the roller for receiving the pressure signal and adjusting the radial displacement of the roller so that the pressure value of each pressure detecting member is within a threshold range.

[0006] According to the wind turbine blade roller coating system provided in an embodiment of the present application, the roller mechanism also includes a rotating assembly, which is rotatably connected between the roller and the adjusting assembly to rotate the roller relative to the adjusting assembly around the axis of the rotating assembly.

[0007] According to the wind turbine blade roller coating system provided in the embodiment of the present application, the roller includes a roller body and a mounting frame that are rotatably connected; the adjustment component also includes an adjustment plate, the adjustment plate is connected to the pressure detection part and the first linear movable part, the adjustment plate and the mounting frame are stacked, and the rotating component is connected between the adjustment plate and the mounting frame.

[0008] According to the wind turbine blade roller coating system provided in the embodiment of the present application, the mounting frame includes a connecting beam and mounting parts arranged at opposite ends of the connecting beam along the length direction, the connecting beam and the mounting parts enclose a mounting area, the roller body is placed in the mounting area, and is detachably connected to the mounting part; the mounting part includes an end plate and a pipe joint head that are connected through, the pipe joint head is used to connect the roller body with the paint supply device, and the end plate is inserted into the roller body and is rotatably connected to the roller body.

[0009] According to the wind turbine blade roller coating system provided in the embodiment of the present application, the adjustment component includes at least two first linear moving members arranged side by side and spaced apart along the axial direction, and the pressure detection member is placed between adjacent first linear moving members.

[0010] According to the wind turbine blade roller coating system provided in an embodiment of the present application, the first linear movable member includes a screw rod, a nut threadedly matched with the screw rod, and a first driving member driving the screw rod, the screw rod and the pressure detection member are arranged parallel to the axis, the nut is connected to one end of the pressure detection member, and the first driving member is connected to the other end of the pressure detection member.

[0011] According to the wind turbine blade roller coating system provided in an embodiment of the present application, the roller group also includes a second linear movable member, which is connected to the multiple roller mechanisms along the axial direction and is used to receive the pressure signal and control the radial displacement of the multiple roller mechanisms.

[0012] The wind turbine blade roller coating system provided in accordance with an embodiment of the present application further includes a distance detection component, which is evenly distributed on the roller coating tooling and is used to send a distance signal; the manipulator receives the distance signal and is used to control the distance and angle between the roller coating tooling and the wind turbine blade.

[0013] According to the wind turbine blade roller coating system provided in an embodiment of the present application, the paint supply device includes a first paint supply unit, a second paint supply unit and a mixing mechanism, the first paint supply unit and the second paint supply unit are used to provide paint liquids of different components; the first paint supply unit includes a first storage mechanism and a first metering pump, the second paint supply unit includes a second storage mechanism and a second metering pump, the first metering pump is connected between the first storage mechanism and the paint inlet end of the mixing mechanism through a pipeline, the second metering pump is connected between the second storage mechanism and the paint inlet end of the mixing mechanism through a pipeline, and the paint outlet end of the mixing mechanism is connected to both ends of the roller mechanism through a pipeline; at least one of the first metering pump and the second metering pump includes a high-precision screw metering pump.

[0014] According to the wind turbine blade roller coating system provided in the embodiment of the present application, the paint supply device also includes a cleaning mechanism, and the cleaning mechanism is connected to the discharge ends of the first storage mechanism and the second storage mechanism.

[0015] The wind turbine blade roller coating system of the embodiment of the present application improves the roller coating efficiency by radially arranging multiple roller assemblies side by side. The roller mechanisms of adjacent roller groups are axially staggered to eliminate roller coating gaps, avoid roller marks at overlaps caused by repeated roller coating, and improve roller coating uniformity. The contact pressure between the roller and the wind turbine blade is detected by a pressure detection member, thereby controlling the first linear moving member to adjust the radial displacement of the roller, so that the pressure value of each pressure detection member is within a threshold range, thereby improving roller coating uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic structural diagram of a wind turbine blade roller coating system provided in some embodiments of the present application is shown;

[0018] Figure 2 A front view of a roller coating tool provided in some embodiments of the present application is shown;

[0019] Figure 3 A top view of a roller coating tool provided in some embodiments of the present application is shown;

[0020] Figure 4 Shows Figure 2 A front view of a mounting frame of a roller mechanism;

[0021] Figure 5 A top view of a roller mechanism provided in some embodiments of the present application is shown;

[0022] Figure 6 A left side view of a roller mechanism provided in some embodiments of the present application is shown;

[0023] Figure 7 A schematic diagram of a paint supply device provided in some embodiments of the present application is shown.

[0024] Reference numerals:

[0025] 100: moving device; 101: walking vehicle; 102: manipulator; 200: paint supply device; 210: first paint supply unit; 211: first material storage mechanism; 212: first metering pump; 220: second paint supply unit; 221: second material storage mechanism; 222: second metering pump; 230: mixing mechanism; 240: cleaning mechanism; 201: motor; 202: material storage tank; 203: stirring blade; 204: pressure detection gauge; 205: electronic liquid level sensor; 206: stop valve;

[0026] 300: roller coating tool; 301: first linear moving part; 302: pressure detection part; 303: rotating assembly; 310: roller group; 311: roller mechanism; 312: second linear moving part; 313: distance detection part; 314: first connecting beam; 315: second connecting beam; 320: roller; 321: roller body; 322: mounting frame; 323: connecting beam; 324: mounting part; 325: pipe joint head; 326: end plate; 327: adjusting plate; 328: support arm beam; 329: gate; 330: adjusting assembly; 331: screw rod; 332: nut; 333: first driving part; 334: mounting plate. DETAILED DESCRIPTION

[0027] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0028] 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. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0029] With the transformation of the global energy structure, the importance of wind power as a clean energy source has become increasingly prominent. As a key component of wind turbines, wind turbine blades have an important impact on improving wind energy conversion efficiency and reducing production costs; and the surface treatment of blades is a key link to ensure their durability and reduce maintenance costs. Through surface treatment of blades, the ability of blades to resist harsh environments (such as wind and sand, salt spray, ultraviolet rays, etc.) can be enhanced, and the service life of blades can be extended; smooth and uniform surfaces help reduce air resistance and improve the aerodynamic performance of blades, thereby increasing wind energy capture and conversion efficiency; effective surface treatment can reduce pollution and corrosion on the blade surface, and reduce the frequency and cost of cleaning and maintenance.

[0030] The surface treatment methods of blades include frosting and grinding, coating treatment and flexible polishing technology, among which coating treatment can enhance the weather resistance, UV resistance and aerodynamic performance of blades. Commonly used coating materials include epoxy resin, polyurethane, etc., which have good weather resistance, corrosion resistance and wear resistance. The coating is evenly covered on the surface of the blade by roller coating, spraying and other methods to form a protective film. During the coating process, it is necessary to pay attention to controlling the thickness and uniformity of the coating to ensure that its performance achieves the expected effect. Roller coating has the advantages of less paint waste, lower environmental pollution and low cost, and is widely used in the coating process of blades.

[0031] The existing roller coating device adopts a structure in which multiple rollers are arranged at intervals along the axis of the roller to roller coat the blades. However, there must be a distance between adjacent rollers due to structural interference, which causes the coating to have a missed coating area. When the missed coating area is re-coated, there will be an overlapping area with the previous layer of coating, thereby forming a roller mark and causing uneven coating.

[0032] In addition, during the rolling coating process between the roller and the wind turbine blade, the existing roller coating device uses a distance sensor to detect the distance to control the roller coating, which has a large error and cannot achieve uniform pressure distribution between each roller and the wind turbine blade, resulting in insufficient uniformity and accuracy of the roller coating thickness, affecting the roller coating effect.

[0033] In order to solve the problems in the prior art, the embodiment of the present application provides a wind turbine blade roller coating system. The wind turbine blade roller coating system provided by the embodiment of the present application is first introduced below.

[0034] Figure 1 The structure diagram of the wind turbine blade roller coating system provided by some embodiments of the present application is shown. Figure 2 1 shows a front view of a roller coating tool 300 provided in some embodiments of the present application, Figure 3 A top view of a roller coating tool 300 provided in some embodiments of the present application is shown.

[0035] like Figures 1 to 3 As shown, the embodiment of the present application provides a wind turbine blade roller coating system, comprising: a mobile device 100 including a traveling vehicle 101 and a manipulator 102 installed on the traveling vehicle 101; a paint supply device 200 installed on the traveling vehicle 101; a roller coating tool 300 installed on the manipulator 102 and connected to the paint supply device 200 by pipeline, the roller coating tool 300 includes a plurality of roller groups 310 arranged side by side in a radial direction, the roller group 310 includes a plurality of roller mechanisms 311 arranged at intervals in an axial direction, and the roller mechanisms 311 of adjacent roller groups 310 are arranged at intervals in an axial direction. The roller mechanism 311 includes a roller 320 and an adjusting assembly 330 which are connected in a radial direction. The adjusting assembly 330 includes a pressure detecting member 302 and a first linear movable member 301 which are in communication connection. The pressure detecting member 302 is connected to the roller 320 for detecting the radial pressure of the roller 320 and sending a pressure signal. The first linear movable member 301 is connected to the roller 320 for receiving the pressure signal and adjusting the radial displacement of the roller 320 so that the pressure value of each pressure detecting member 302 is within the threshold range.

[0036] Specifically, the mobile device 100 includes a traveling vehicle 101 and a manipulator 102 installed on the traveling vehicle 101. The traveling vehicle 101 serves as a mobile platform of the entire roller coating system and can move freely along a preset track or path to cover the entire length of the wind turbine blade to achieve all-round coating. During the roller coating process of the wind turbine blade, multiple traveling vehicles 101 can work simultaneously. For example, there is a traveling vehicle 101 on the windward shell side and another traveling vehicle 101 on the leeward shell side. The two traveling vehicles 101 can also work simultaneously. Alternatively, along the span direction of the wind turbine blade, there are three traveling vehicles 101, the first traveling vehicle walks in the blade tip area, the second traveling vehicle walks in the beam area, and the third traveling vehicle walks in the blade root area, so that different areas of the wind turbine blade can work simultaneously. The manipulator 102 is installed on the traveling vehicle 101 and has high-precision, multi-degree-of-freedom movement capabilities. The manipulator 102 can flexibly adjust its posture and position according to the programming instructions to achieve accurate coating of different parts and complex curved surfaces of the blade by driving the roller coating tool 300. A plurality of manipulators 102 can be installed on a traveling vehicle 101, each of which has a roller coating tool 300, and the plurality of manipulators 102 can work simultaneously or alternately.

[0037] The paint supply device 200 is installed on the traveling vehicle 101 and is responsible for providing a stable supply of paint to the roller coating tool 300. The paint supply device 200 is connected to the roller coating tool 300 through a pipeline to ensure the continuity and stability of the paint during the transportation process. The paint supply device 200 may also be equipped with functions such as flow control, pressure regulation and stirring to ensure the uniformity and consistency of the paint.

[0038] The roller coating tool 300 is directly responsible for uniformly coating the paint on the surface of the wind turbine blade. The roller coating tool 300 includes a plurality of roller groups 310 arranged side by side in the radial direction, and the roller groups 310 include a plurality of roller mechanisms 311 arranged at intervals in the axial direction. The roller mechanisms 311 of adjacent roller groups 310 are arranged in an axially staggered manner, so that the roller coating tool 300 can cover a larger range of the blade surface, reduce the coating dead angle, and improve the coating efficiency. The radial and axial directions in this application are both relative to the roller body 321 of the roller mechanism 311. The plurality of roller groups 310 arranged side by side in the radial direction can increase the area of ​​a single coating, and the roller mechanisms 311 of adjacent roller groups 310 are arranged in an axially staggered manner, which can avoid missing coating within the range of a single coating and coating accumulation at both ends of the roller mechanism 311; there is an overlapping coating area between adjacent roller mechanisms 311 to avoid missing coating, and the ends that are prone to coating accumulation are subjected to secondary rolling to improve the coating uniformity. The roller group 310 may include one roller mechanism 311 or two coaxial roller mechanisms 311, or other number of coaxial roller mechanisms 311. At least two roller groups 310 are radially arranged side by side, and the number of roller mechanisms 311 in each roller group 310 may be the same or different.

[0039] For example, the roller coating tool 300 includes a first roller group and a second roller group 310 radially arranged side by side, the first roller group and the second roller group are arranged in parallel, the first roller group includes two roller mechanisms 311 with a coaxial line, the second roller group includes one roller mechanism 311 and is placed between the two roller mechanisms 311 of the first roller group, and in order to increase the single roller coating area, the overlapping part of the roller mechanisms 311 of the first roller group and the second roller group is as small as possible. For another example, the roller coating tool 300 includes a first roller group and a second roller group radially arranged side by side, the first roller group includes a first roller mechanism and a second roller mechanism with a coaxial line, the first roller group includes a third roller mechanism and a fourth roller mechanism with a coaxial line, the first roller group and the second roller group are arranged in parallel, the third roller mechanism is placed between the first roller mechanism and the second roller mechanism, and the second roller mechanism is placed between the third roller mechanism and the fourth roller mechanism. The four roller mechanisms 311 of the roller coating tool 300 are arranged in a parallelogram matrix, and can be flexibly adjusted according to different areas and curvatures of the blade surface to achieve a uniform and efficient coating effect.

[0040] The roller mechanism 311 includes a roller 320 and an adjustment assembly 330 connected in a radial direction. The roller 320 is a component that actually contacts the surface of the blade and is responsible for transferring the coating to the blade. The adjustment assembly 330 is used to control the contact pressure between the roller 320 and the wind turbine blade, thereby ensuring that the contact pressure between the roller 320 of each roller mechanism 311 and the wind turbine blade is within a threshold range, so that the roller 320 is subjected to a more uniform force, and finally the coating thickness is more uniform.

[0041] The adjustment component 330 includes a pressure detection component 302 and a first linear moving component 301 which are communicatively connected. The pressure detection component 302 detects the radial pressure of the roller 320 in real time and sends a pressure signal to the control system. The first linear moving component 301 automatically adjusts the radial displacement of the roller 320 according to the received pressure signal to ensure that the pressure value of each pressure detection component 302 is maintained within a preset threshold range, effectively avoiding excessive squeezing or insufficient contact of the roller 320 on the blade surface, thereby ensuring the uniformity and quality of the coating. Among them, the pressure detection component 302 includes a tensile pressure sensor, and the first linear moving component 301 includes a screw nut 332 mechanism or a slide mechanism or a gear rack mechanism, etc.

[0042] Continue to refer Figure 2 and Figure 3 In one embodiment of the present application, the roller group 310 also includes a second linear movable member 312 , which is axially connected to the multiple roller mechanisms 311 for receiving a pressure signal and controlling the radial displacement of the multiple roller mechanisms 311 .

[0043] That is to say, each roller group 310 includes at least one second linear moving member 312, which is used to control the synchronous radial movement of at least part of the roller mechanism 311 in a roller group 310. For example, each roller group 310 includes a second linear moving member 312, and a second linear moving member 312 is connected to all roller mechanisms 311 in the roller group 310. The second linear moving member 312 controls all roller mechanisms 311 to synchronously approach or move away from the wind turbine blade based on the pressure signal of the pressure detection member 302. For example, when the pressure values ​​detected by all pressure detection members 302 are zero, all pressure detection members 302 send a first pressure signal to the second linear moving member 312, and the second linear moving member 312 controls all roller mechanisms 311 to move toward the wind turbine blade. Until the pressure value detected by at least one pressure detection member 302 in the roller group 310 is within the threshold range, and the second pressure signal is fed back to the second linear moving member 312, the second linear moving member 312 receives the second pressure signal and stops moving. The first linear moving member 301 moves based on the pressure signal of the pressure detecting member 302. The second linear moving member 312 includes a screw nut 332 mechanism, a slide mechanism, a gear rack mechanism, and the like.

[0044] For example, when the pressure value of the pressure detection member 302 corresponding to the first linear moving member 301 is zero, the first linear moving member 301 moves toward the wind turbine blade. Until the pressure value of the corresponding pressure detection member 302 reaches within the threshold range, the third pressure signal is fed back to the first linear moving member 301, and the first linear moving member 301 stops moving after receiving the third pressure signal. This makes the contact pressure between each roller 320 and the wind turbine blade within the threshold range, thereby improving the uniformity of roller coating.

[0045] Each roller group 310 performs the above-mentioned pressure adjustment process, so that the pressure values ​​of all pressure detection parts 302 in each roller group 310 are within the threshold range, and then the manipulator 102 is controlled to drive the roller coating tool 300 to perform roller coating operations within the specified range. Since the change trends of different areas of the wind turbine blades are different, the above-mentioned pressure adjustment process is required each time different areas are roller coated to ensure that the thickness of the overall coating of the wind turbine blade is uniform. Alternatively, during the operation of the roller coating tool 300, the pressure detection part 302 detects the pressure value in real time, and controls the movement of the first linear moving part 301 in real time, so as to achieve uniform roller coating during the roller coating operation.

[0046] Specifically, taking the second linear moving member 312 including a slide mechanism as an example, the second linear moving member 312 includes a second driving member, a guide rail and a slider, the guide rail is arranged radially, the slider slides with the guide rail, and the second driving member drives the slider to move along the guide rail. Multiple roller mechanisms 311 are fixedly connected by a first connecting beam 314, and the first connecting beam 314 is fixedly connected to the slider, and during the movement of the slider along the guide rail, the multiple roller mechanisms 311 are driven to move radially. Multiple first connecting beams 314 of multiple roller groups 310 are arranged axially and parallel to each other, and multiple first connecting beams 314 in a roller group 310 are arranged axially and parallel to each other. Multiple roller groups 310 are connected together by a second connecting beam 315, and the second connecting beam 315 is parallel to the first connecting beam 314. The second linear moving member 312 of the roller group 310 is connected together by the second connecting beam 315, and then connected to the manipulator 102 through a flange.

[0047] Continue to refer Figure 2 In some embodiments of the present application, the wind turbine blade roller coating system also includes a distance detection member 313, which is evenly distributed on the roller coating tool 300 and is used to send a distance signal; the manipulator 102 receives the distance signal and is used to control the distance and angle between the roller coating tool 300 and the wind turbine blade.

[0048] The distance detection part 313 can use laser ranging, ultrasonic ranging or infrared ranging, etc. to measure the small distance changes between the roller coating tool 300 and the blade surface in real time, and convert these changes into electrical signals and send them to the control system. After receiving the distance signal, the control system will analyze and process it. According to the preset coating parameters and the geometric shape of the blade, the control system will calculate the optimal distance and angle that the roller coating tool 300 should maintain, and send corresponding control instructions to the manipulator 102. According to these instructions, the manipulator 102 adjusts its posture and position to achieve accurate control of the distance and angle between the roller coating tool 300 and the blade.

[0049] A plurality of distance detection members 313 are evenly distributed in the roller coating area of ​​the roller coating tool 300, and scan the surface of the blade to comprehensively detect the distance between each position of the roller coating tool 300 and the wind turbine blade, calculate the angle and distance with the blade, and use it for position adjustment of the manipulator 102. Based on the distance signals of the plurality of distance detection members 313, the manipulator 102 controls the relative distance and relative angle of the roller coating tool 300 relative to the wind turbine blade. In other words, the manipulator 102 is controlled by the distance detection member 313 to make the roller coating tool 300 reach the first preset position, and the second linear moving member 312 is controlled by the pressure detection member 302 to make the roller group 310 reach the second preset position, and the first linear moving member 301 is further controlled to make the roller 320 reach the third preset position. The first preset position, the second preset position and the third preset position may have different distances and / or different angles relative to the wind turbine blade.

[0050] For example, the distance detection members 313 are distributed at both ends of each roller group 310 and the middle of the roller group 310 along the axial direction. Figure 2 Taking the structure of the middle roller coating tool 300 as an example, two distance detection members 313 are set at both ends of the axial direction of the first roller group, specifically, they are set on the outside of the first linear moving member 301; and one distance detection member 313 is set on the side of the second linear moving member 312 close to the second roller group. Similarly, two distance detection members 313 are set at both ends of the axial direction of the second roller group, specifically, they are set on the outside of the first linear moving member 301; and one distance detection member 313 is set on the side of the second linear moving member 312 close to the first roller group. The roller coating tool 300 has 6 distance detection members 313 evenly distributed.

[0051] Figure 4 Shows Figure 2 A front view of a mounting frame 322 of a roller mechanism 311, Figure 5 A top view of a roller mechanism 311 provided in some embodiments of the present application is shown.

[0052] like Figure 4 and Figure 5 As shown, in an optional embodiment of the present application, the roller mechanism 311 further includes a rotating assembly 303 , which is rotatably connected between the roller 320 and the adjusting assembly 330 , and is used to rotate the roller 320 relative to the adjusting assembly 330 around the axis of the rotating assembly 303 .

[0053] The rotating assembly 303 includes a rotating shaft, a sleeve and a limiting member. For example, the rotating assembly 303 is a turntable, and the sleeve is installed in the adjusting assembly 330. The rotating shaft and the sleeve can be connected by a bearing to achieve relative rotation. The rotating shaft is fixedly connected to the roller 320 to achieve the rotation of the roller 320 relative to the adjusting assembly 330. A limiting member is set between the sleeve and the rotating shaft to limit the rotation angle of the sleeve and the rotating shaft to prevent the roller 320 from interfering with or completely separating from the surface of the wind turbine blade. Of course, the rotating assembly 303 can also be set at different positions by limiting the rotation angle of the roller 320 relative to the adjusting assembly 330. The rotating assembly 303 achieves a smaller fitting pressure between the roller 320 and the wind turbine blade, which is more conducive to the precise adjustment of the pressure between the roller 320 and the wind turbine blade.

[0054] The surface of a wind turbine blade is usually a complex curved surface with different curvatures and inclination angles. The rotating assembly 303 enables the roller 320 to more flexibly adapt to the curvature changes of the blade surface, ensuring good contact with the blade surface at different positions and angles and achieving effective coating transfer. The rotating assembly 303 enables the roller 320 to flexibly and buffer contact with the wind turbine blade to achieve a uniform coating effect.

[0055] Figure 6 A left side view of a roller mechanism 311 provided in some embodiments of the present application is shown.

[0056] Furthermore, if Figures 4 to 6 As shown, in a specific embodiment of the present application, the roller 320 includes a rotatably connected roller body 321 and a mounting frame 322; the adjustment assembly 330 also includes an adjustment plate 327, the adjustment plate 327 is connected to the pressure detection member 302 and the first linear moving member 301, the adjustment plate 327 and the mounting frame 322 are stacked, and the rotating assembly 303 is connected between the adjustment plate 327 and the mounting frame 322.

[0057] The roller body 321 is rotatably connected to the mounting frame 322 to realize the rotation of the roller body 321 around its own axis, thereby realizing roller coating. The mounting frame 322 is used to support the roller body 321. The roller body 321 has an inner cavity for conveying paint liquid, and the circumferential wall of the roller body 321 is provided with a conveying hole connected to the inner cavity, which is used to convey the paint liquid in the inner cavity to the outer surface of the roller body 321. A brush or felt structure is provided on the outer surface of the roller body 321, which is used to apply the paint liquid on the surface of the wind turbine blade. The roller body 321 has good wear resistance, corrosion resistance and elasticity to ensure the uniformity and quality of the coating.

[0058] The roller body 321 is connected to the adjustment plate 327 of the adjustment assembly 330 through the mounting frame 322, and the rotating assembly 303 is connected between the adjustment plate 327 and the mounting frame 322, thereby realizing the connection between the roller 320, the adjustment assembly 330 and the rotating assembly 303. The adjustment plate 327 and the mounting frame 322 are arranged up and down, and the rotating assembly 303 is placed between the adjustment plate 327 and the mounting frame 322. The rotating assembly 303 is rotatably connected to the adjustment plate 327 and fixedly connected to the mounting frame 322, so that the mounting frame 322 drives the roller body 321 to rotate relative to the adjustment plate 327.

[0059] One end of the pressure detection member 302 is connected to the adjustment plate 327, and the other end is connected to the manipulator 102. The pressure detection member 302 detects the pressure on the roller body 321 through the adjustment plate 327, the rotating assembly 303 and the mounting frame 322. After the roller body 321 determines the fitting angle with the wind turbine blade through the rotating assembly 303, the first linear moving member 301 adjusts the contact distance between the roller body 321 and the wind turbine blade based on the pressure value of the pressure detection member 302.

[0060] Continue to refer Figure 4 and Figure 5 In other embodiments of the present application, the mounting frame 322 includes a connecting beam 323 and mounting portions 324 arranged at opposite ends of the connecting beam 323 along the length direction, the connecting beam 323 and the mounting portion 324 surround a mounting area, the roller body 321 is placed in the mounting area, and is detachably connected to the mounting portion 324; the mounting portion 324 includes an end plate 326 and a pipe joint head 325 that are connected through, the pipe joint head 325 is used to connect the roller body 321 with the paint supply device 200, and the end plate 326 is inserted into the roller body 321 and is rotatably connected to the roller body 321.

[0061] That is, the connecting beam 323 and the mounting area are arranged side by side in the radial direction, and the two ends of the connecting beam 323 in the axial direction include mounting parts 324. The connecting beam 323 is connected to the adjustment plate 327 through the rotating assembly 303, and the pressure detection member 302 and the first linear moving member 301 are both connected to the connecting beam 323.

[0062] The mounting portion 324 includes an end plate 326 and a pipe joint 325 that are connected through and through. The end plate 326 is rotatably connected to the roller body 321. The end plate 326 includes a bearing structure for blocking and supporting the end of the roller body 321 to prevent paint from overflowing from the end of the roller body 321 during the roller coating process, causing paint to accumulate at the overlap of radially adjacent roller bodies 321, resulting in roller marks. The pipe joint 325 connects the inner cavity of the roller body 321 with the paint supply device 200, so that the roller body 321 is painted from both ends of the axial direction, so that the brush or felt on the surface of the roller body 321 is evenly infiltrated. The pipe joint 325 can be made of stainless steel pipe to support the roller body 321.

[0063] The roller body 321 is detachably connected to the mounting portion 324, which facilitates the replacement of the roller body 321. In addition, during the cleaning process of the paint supply pipeline of the roller coating tool 300, the roller body 321 can be easily removed, and the flushing liquid can flow out from the pipe joint head 325 to achieve the cleaning of the pipe joint head 325 and the pipeline connected thereto, thereby avoiding the blockage of the pipe joint head 325 or residual paint liquid, and improving the roller coating effect during repeated use. In addition, the service life of the joint head and the roller coating tool 300 is extended, and the maintenance cost is reduced.

[0064] Specifically, the mounting portion 324 further includes an arm beam 328 and a gate 329. The arm beam 328 is connected between the connecting beam 323 and the pipe joint head 325 to achieve the connection between the mounting portion 324 and the connecting beam 323. One end of the gate 329 is installed on the connecting beam 323, and the other end is installed in the pipe joint head 325 to control the on and off of the pipe joint head 325. It is convenient to cut off the pipe joint head 325 during the disassembly process of the roller body 321 to prevent the paint liquid from overflowing.

[0065] like Figure 5 As shown, in an optional embodiment of the present application, the adjustment assembly 330 includes at least two first linear moving members 301 arranged side by side and spaced apart in the axial direction, and the pressure detection member 302 is placed between adjacent first linear moving members 301 .

[0066] In order to improve the adjustment accuracy, multiple pressure detection components 302 and multiple first linear moving components 301 can be set in the axial direction of the roller 320, and each pressure adjustment component can control one or more first linear moving components 301. For example, the adjustment component 330 includes two first linear moving components 301 and a pressure detection component 302. The first linear moving components 301 and the pressure detection component 302 are arranged in parallel. The pressure detection component 302 is placed between the two first linear moving components 301. The pressure detection component 302 can be connected to the middle part of the roller 320 along the axial direction, that is, the pressure detection component 302 can be connected to the middle part of the length direction of the connecting beam 323. Figure 6 As shown, the pressure detection member 302 can be placed below the first linear moving member 301. One end of the first linear moving member 301 is connected to the adjustment plate 327, and the other end is connected to the manipulator 102. The pressure value of the pressure detection member 302 can control the two linear moving members to move the same distance in the radial direction.

[0067] In another embodiment of the present application, the pressure value of the pressure detection member 302 can control the two linear moving members to move different distances in the radial direction. By controlling the different moving distances of the two linear moving members, the deflection of the adjustment plate 327 can be fine-tuned, and the deflection of the roller body 321 can be controlled to adapt to the curved surface roller coating of the blade surface.

[0068] Alternatively, the adjustment component 330 includes two first linear moving members 301 and two pressure detecting members 302, the first pressure detecting member and the second pressure detecting member are placed between the two first linear moving members 301, the pressure value of the first pressure detecting member controls the radial moving distance of one first linear moving member 301, and the pressure value of the second pressure detecting member controls the radial moving distance of another first linear moving member. Of course, in other embodiments of the present application, the first linear moving member 301 and the pressure detecting member 302 can be alternately arranged.

[0069] like Figure 5 and Figure 6 As shown, in some embodiments of the present application, the first linear moving member 301 includes a screw rod 331, a nut 332 threadedly matched with the screw rod 331, and a first driving member 333 for driving the screw rod 331. The screw rod 331 and the pressure detection member 302 are arranged parallel to the axis, the nut 332 is connected to one end of the pressure detection member 302, and the first driving member 333 is connected to the other end of the pressure detection member 302.

[0070] Specifically, the nut 332 is installed on the side of the adjustment plate 327 away from the mounting frame 322, the screw rod 331 cooperates with the nut 332, and the first driving member 333 is connected to the end of the screw rod 331 away from the nut 332 along the length direction, and is used to drive the screw rod 331 to move relative to the nut 332, so as to realize the approach and distance of the roller body 321 relative to the wind turbine blade.

[0071] For example, the nuts 332 of the plurality of first linear moving members 301 are all mounted on the adjustment plate 327, and the first driving members 333 of the plurality of linear moving members are all connected together and connected together with one end of the pressure detecting member 302. For example, the first linear moving member 301 and the pressure detecting member 302 are connected via a mounting plate 334, and the mounting plate 334 is connected to the first connecting beam 314.

[0072] Figure 7 A schematic diagram of a paint supply device 200 provided in some embodiments of the present application is shown.

[0073] like Figure 7As shown, in some embodiments of the present application, the paint supply device 200 includes a first paint supply unit 210, a second paint supply unit 220 and a mixing mechanism 230, the first paint supply unit 210 and the second paint supply unit 220 are used to provide paint liquids of different components; the first paint supply unit 210 includes a first material storage mechanism 211 and a first metering pump 212, the second paint supply unit 220 includes a second material storage mechanism 221 and a second metering pump 222, the first metering pump 212 is connected between the first material storage mechanism 211 and the paint inlet end of the mixing mechanism 230 through a pipeline, the second metering pump 222 is connected between the second material storage mechanism 221 and the paint inlet end of the mixing mechanism 230 through a pipeline, and the paint outlet end of the mixing mechanism 230 is connected to both ends of the roller mechanism 311 through a pipeline; at least one of the first metering pump 212 and the second metering pump 222 includes a screw metering pump.

[0074] The first storage mechanism 211 stores the paint liquid of the first component and has good sealing and corrosion resistance to ensure that the paint liquid will not deteriorate or be contaminated during storage. The first metering pump 212 quantitatively transports the paint liquid in the first storage mechanism 211 to the mixing mechanism 230 by accurately controlling the pumping volume. Similar to the first storage mechanism 211, the second storage mechanism 221 is used to store the paint liquid of the second component. It is also necessary to ensure good sealing and corrosion resistance. The second metering pump 222 quantitatively transports the paint liquid in the second storage mechanism 221 to the mixing mechanism 230 by accurately controlling the pumping volume. The mixing function fully mixes the two component paint liquids from the first paint supply unit 210 and the second paint supply unit 220. The quality of the mixing effect directly affects the performance and quality of the final coating. The roller mechanism 311 uses the mixed paint liquid to paint the wind turbine blades, and the feeding at both ends makes the brush or felt of the roller body 321 evenly infiltrated.

[0075] The paint supply device 200 automatically completes the proportioning and mixing operation of the two-component water-based paint. At least one of the first metering pump 212 and the second metering pump 222 includes a high-precision screw metering pump to improve the mixing accuracy of the paint liquid. The high-precision screw metering pump separates and pushes the liquid in the pump chamber through two interlocking screws to achieve reliable and accurate flow delivery. For example, the first metering pump 212 is a high-precision screw metering pump, and the second metering pump 222 is a precision gear pump. The metering pump can reduce the loss of the paint liquid, has high pressure and uniform flow rate, and ensures accurate mixing ratio. The output flow of the first metering pump 212 and the second metering pump 222 of the paint supply device 200 is controlled by the pressure value of the pressure detection member 302 to achieve uniform roller coating of the blades. The painting speed and pressure can also be adjusted according to the overlap position of the blade material and the roller body 321.

[0076] Specifically, the first storage mechanism 211 and the second storage mechanism 221 have the same structure, and the first storage mechanism 211 is taken as an example. The first storage mechanism 211 includes a motor 201, a storage tank 202, a stirring blade 203, a pressure detection gauge 204 and an electronic liquid level sensor 205. The electronic liquid level sensor 205 is installed in the storage tank 202 to detect the amount of paint liquid. The stirring blade 203 is connected to the motor 201 and installed in the storage tank 202. The motor 201 drives the stirring blade 203 to rotate to stir the paint liquid in the storage tank 202. The pressure detection gauge 204 is installed on the storage tank 202 to detect the pressure in the storage tank 202. Through the numerical feedback of the motor 201, the electronic liquid level sensor 205 and the pressure detection gauge 204, the paint supply and flow rate of the metering pump can be adjusted in real time.

[0077] Furthermore, in other embodiments of the present application, the paint supply device 200 further includes a cleaning mechanism 240, which is connected to the discharge ends of the first storage mechanism 211 and the second storage mechanism 221. The cleaning mechanism 240 is used to regularly clean the paint supply pipeline to ensure the roller coating quality and the service life of the pipeline.

[0078] A stop valve 206 is provided at the outlet of the first material storage mechanism 211 and the second material storage mechanism 221, and a cleaning mechanism 240 is connected to the paint supply pipeline downstream of the stop valve 206. The cleaning mechanism 240 includes a water pump, which is connected to the paint supply pipeline through a pipeline. The water pump pumps the cleaning liquid in the water tank into the paint supply pipeline, passes through the first metering pump 212, the second metering pump 222, and the mixing mechanism 230 to reach the pipe joint 325. When the roller body 321 is removed, the cleaning liquid flows out from the pipe joint 325 to complete the cleaning of the paint supply pipeline and the first metering pump 212, the second metering pump 222, and the mixing mechanism 230.

[0079] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A wind turbine blade roller coating system, characterized in that: include: A mobile device, comprising a traveling vehicle and a manipulator mounted on the traveling vehicle; A paint supply device, installed on the traveling vehicle; A roller coating tool is installed on the manipulator and connected to the paint supply device pipeline, the roller coating tool includes a plurality of roller groups arranged side by side in the radial direction, the roller group includes a plurality of roller mechanisms arranged at intervals in the axial direction, and the roller mechanisms of adjacent roller groups are staggered in the axial direction; the roller mechanism includes rollers and adjustment components connected in the radial direction, the adjustment component includes a pressure detection component and a first linear moving component in communication connection, the pressure detection component is connected to the roller, and is used to detect the pressure of the roller in the radial direction and send a pressure signal, the first linear moving component is connected to the roller, and is used to receive the pressure signal and adjust the radial displacement of the roller so that the pressure value of each pressure detection component is within a threshold range.

2. The wind turbine blade roller coating system according to claim 1, characterized in that: The roller mechanism further comprises a rotating assembly, which is rotatably connected between the roller and the adjusting assembly and is used to rotate the roller relative to the adjusting assembly around the axis of the rotating assembly.

3. The wind turbine blade roller coating system according to claim 2, characterized in that: The roller comprises a roller body and a mounting frame which are rotatably connected; The adjustment component also includes an adjustment plate, which is connected to the pressure detection component and the first linear moving component. The adjustment plate and the mounting frame are stacked, and the rotating component is connected between the adjustment plate and the mounting frame.

4. The wind turbine blade roller coating system according to claim 3, characterized in that: The mounting frame comprises a connecting beam and mounting parts arranged at two opposite ends of the connecting beam along the length direction, the connecting beam and the mounting parts enclose a mounting area, the roller body is placed in the mounting area and is detachably connected to the mounting parts; The mounting portion includes an end plate and a pipe joint connected through the end plate, the pipe joint is used to connect the roller body and the paint supply device, and the end plate is inserted into the roller body and is rotatably connected to the roller body.

5. The wind turbine blade roller coating system according to claim 1, characterized in that: The adjustment assembly includes at least two first linear moving members arranged side by side and spaced apart along the axial direction, and the pressure detecting member is disposed between adjacent first linear moving members.

6. The wind turbine blade roller coating system according to claim 5, characterized in that: The first linear moving member includes a screw rod, a nut threadedly matched with the screw rod, and a first driving member that drives the screw rod. The screw rod and the pressure detection member are arranged parallel to the axis, the nut is connected to one end of the pressure detection member, and the first driving member is connected to the other end of the pressure detection member.

7. The wind turbine blade roller coating system according to claim 1, characterized in that: The roller group also includes a second linear movable member, which is connected to the plurality of roller mechanisms along the axial direction and is used to receive the pressure signal and control the radial displacement of the plurality of roller mechanisms.

8. The wind turbine blade roller coating system according to claim 1, characterized in that: It also includes distance detection components, which are evenly distributed on the roller coating tooling and are used to send distance signals; The manipulator receives the distance signal to control the distance and angle between the roller coating tool and the wind turbine blade.

9. The wind turbine blade roller coating system according to claim 1, characterized in that: The paint supply device comprises a first paint supply unit, a second paint supply unit and a mixing mechanism, wherein the first paint supply unit and the second paint supply unit are used to provide paint liquids of different components; The first paint supply unit includes a first material storage mechanism and a first metering pump, and the second paint supply unit includes a second material storage mechanism and a second metering pump, the first metering pump is connected between the first material storage mechanism and the paint inlet end of the mixing mechanism through a pipeline, the second metering pump is connected between the second material storage mechanism and the paint inlet end of the mixing mechanism through a pipeline, and the paint outlet end of the mixing mechanism is connected to both ends of the roller mechanism through a pipeline; At least one of the first metering pump and the second metering pump comprises a high-precision screw metering pump.

10. The wind turbine blade roller coating system according to claim 9, characterized in that: The paint supply device further comprises a cleaning mechanism, and the cleaning mechanism is connected to the discharge ends of the first material storage mechanism and the second material storage mechanism.

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