Wind turbine blade roller coating system

Abstract

A wind turbine blade roller coating system, comprising: a mobile apparatus (100) comprising a traveling vehicle (101) and a manipulator (102) mounted on the traveling vehicle (101); a paint supply apparatus (200); a roller coating tool (300) mounted on the manipulator (102) and connected to the paint supply apparatus (200) by means of a pipe; roller groups (310) each comprising a plurality of roller mechanisms (311) arranged at intervals in an axial direction, the roller mechanisms (311) of adjacent roller groups (310) being arranged in an axially staggered manner; pressure measurement members (302) each connected to rollers (320) for measuring the radial pressure of the rollers (320) and sending a pressure signal; and first linear movement members (301) each connected rollers (320). The wind turbine blade roller coating system is used to solve the problem of poor roller coating uniformity in the existing technology.

Description

Wind turbine blade roll coating system

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202411378584.6, filed on September 29, 2024, entitled “Wind turbine blade roll coating system”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application belongs to the field of wind turbine blades, and particularly relates to a wind turbine blade roll coating system. BACKGROUND

[0004] Wind turbine blades operate in high altitudes and all-weather conditions, often affected by sunlight, sand, lightning, heavy rain and other natural weather, and the operating environment is extremely harsh. The main purpose of painting is to form a protective film on the surface of the blade, effectively preventing the erosion of these environmental factors on the blade, thereby protecting the integrity and performance of the blade. Especially in the harsh wind-sand impact area, strong ultraviolet radiation and large day-night temperature difference, as well as high humidity, high salt and alkali corrosion of offshore wind farm environment.

[0005] The existing painting methods are mainly spraying and roll coating. Roll coating has the advantages of less paint waste, lower environmental pollution and lower cost. However, the existing roll coating equipment has low painting efficiency and poor roll coating uniformity. SUMMARY

[0006] The embodiment of the present application provides a wind turbine blade roll coating system, which can control the pressure of each roller mechanism and the wind turbine blade within a threshold range through the pressure detection piece and the first linear movement piece, realize the roll coating uniformity, and improve the roll coating efficiency.

[0007] The embodiment of the present application provides a wind turbine blade roll coating system, comprising: a moving device comprising a walking vehicle and a manipulator installed on the walking vehicle; a paint supply device installed on the walking vehicle; a roll coating tool installed on the manipulator and connected with the paint supply device pipeline, the roll coating tool comprising a plurality of roller groups arranged side by side along the radial direction, the roller group comprising a plurality of roller mechanisms arranged at intervals along the axial direction, the roller mechanisms of adjacent roller groups being arranged at intervals in the axial direction; the roller mechanism comprising a roller and an adjusting assembly connected along the radial direction, the adjusting assembly comprising a pressure detection piece and a first linear movement piece in communication, the pressure detection piece being connected with the roller for detecting the pressure of the roller along the radial direction and sending a pressure signal, the first linear movement piece being connected with the roller for receiving the pressure signal and adjusting the radial displacement of the roller, so that the pressure value of each pressure detection piece is within a threshold range.

[0008] According to the wind power blade roller coating system provided by the embodiment of the present application, the roller mechanism further comprises a rotating assembly rotatably connected between the roller and the adjusting assembly, for rotating the roller relative to the adjusting assembly about the axis of the rotating assembly.

[0009] According to the wind power blade roller coating system provided by the embodiment of the present application, the roller comprises a rotatable roller body and a mounting rack; the adjusting assembly further comprises an adjusting plate connected with the pressure detection piece and the first linear moving piece, the adjusting plate is stacked with the mounting rack, and the rotating assembly is connected between the adjusting plate and the mounting rack.

[0010] According to the wind power blade roller coating system provided by the embodiment of the present application, the mounting rack comprises 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 surround to form a mounting area, the roller body is arranged in the mounting area and detachably connected with the mounting parts; the mounting part comprises a through-connected end plate and a pipe joint head, the pipe joint head is used for connecting the roller body and the paint supply device, and the end plate is inserted into the roller body and rotatably connected with the roller body.

[0011] According to the wind power blade roller coating system provided by the embodiment of the present application, the adjusting assembly comprises at least two first linear moving pieces arranged side by side and spaced apart along the axial direction, and the pressure detection piece is arranged between adjacent first linear moving pieces.

[0012] According to the wind power blade roller coating system provided by the embodiment of the present application, the first linear moving piece comprises a lead screw, a nut threadedly matched with the lead screw, and a first driving piece driving the lead screw, the lead screw is arranged parallel to the axis of the pressure detection piece, the nut is connected with one end of the pressure detection piece, and the first driving piece is connected with the other end of the pressure detection piece.

[0013] According to the wind power blade roller coating system provided by the embodiment of the present application, the roller group further comprises a second linear moving piece connected with a plurality of roller mechanisms along the axial direction, for receiving the pressure signal and controlling the radial displacement of the plurality of roller mechanisms.

[0014] According to the wind power blade roller coating system provided by the embodiment of the present application, further comprising a distance detection piece, the distance detection piece is uniformly distributed on the roller coating tool, for sending a distance signal; the manipulator receives the distance signal, for controlling the distance and angle between the roller coating tool and the wind power blade.

[0015] According to the wind power blade roller coating system provided by the embodiment of the present application, the paint supply device comprises 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 for supplying paint of different components; the first paint supply unit comprises a first storage mechanism and a first metering pump, the second paint supply unit comprises 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, the paint outlet end of the mixing mechanism is communicated with 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.

[0016] According to the wind power blade roller coating system provided by the embodiment of the present application, the paint supply device further comprises a cleaning mechanism, the cleaning mechanism is connected to the discharge ends of the first storage mechanism and the second storage mechanism.

[0017] The wind power 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 assemblies are arranged in axial offset, the roller coating gap is eliminated, the lap joint is avoided from forming a roller mark caused by repeated roller coating, and the roller coating uniformity is improved; and the contact pressure between the roller and the wind power blade is detected by the pressure detection piece, so that the first linear movement piece adjusts the radial displacement of the roller, so that the pressure value of each pressure detection piece is within the threshold range, and the roller coating uniformity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0019] Fig. 1 shows a structural schematic diagram of a wind power blade roller coating system provided by some embodiments of the present application;

[0020] Fig. 2 shows a front view of a roller coating tool provided by some embodiments of the present application;

[0021] Fig. 3 shows a top view of the roller coating tool provided by some embodiments of the present application;

[0022] Fig. 4 shows a front view of a mounting frame of a roller mechanism in Fig. 2;

[0023] Fig. 5 shows a top view of the roller mechanism of the roller coating tool provided by some embodiments of the present application;

[0024] Fig. 6 shows a left view of the roller mechanism of the roller coating tool provided by some embodiments of the present application;

[0025] Fig. 7 shows a schematic diagram of a paint supply device of a roller coating apparatus according to some embodiments of the present application.

[0026] Reference signs: 100: mobile device; 101: walking vehicle; 102: robot arm; 200: paint supply device; 210: first paint supply unit; 211: first storage mechanism; 212: first metering pump; 220: second paint supply unit; 221: second storage mechanism; 222: second metering pump; 230: mixing mechanism; 240: cleaning mechanism; 201: motor; 202: storage tank; 203: stirring blade; 204: pressure detection gauge; 205: electronic liquid level sensor; 206: stop valve; 300: roller coating apparatus; 301: first linear moving member; 302: pressure detection member; 303: rotating assembly; 310: roller cylinder group; 311: roller cylinder mechanism; 312: second linear moving member; 313: distance detection member; 314: first connecting beam; 315: second connecting beam; 320: roller cylinder; 321: roller cylinder body; 322: mounting bracket; 323: connecting beam; 324: mounting portion; 325: pipe joint head; 326: end plate; 327: adjusting plate; 328: support beam; 329: gate; 330: adjusting assembly; 331: screw rod; 332: screw nut; 333: first driving member; 334: mounting plate. DETAILED DESCRIPTION

[0027] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application and is not intended in any way to limit the present application. The present application can be carried out in practice without some of the specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

[0028] It should be noted that the relative terms such as first and second, etc., are used herein merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Also, the terms "comprises", "comprising", or any other variations thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprises" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0029] With the transformation of global energy structure, wind power as a clean energy is becoming increasingly important. Wind turbine blades, as the key components of wind turbine generators, have a significant impact on improving wind energy conversion efficiency and reducing production costs. Surface treatment of the blades is a key step to ensure their durability and reduce maintenance costs. Through surface treatment of the blades, the ability of the blades to resist harsh environments such as wind sand, salt spray, and ultraviolet light can be enhanced, and the service life of the blades can be extended. A smooth and uniform surface helps to reduce air resistance and improve the aerodynamic performance of the blades, thereby increasing the capture and conversion efficiency of wind energy. Effective surface treatment can reduce pollution and corrosion on the surface of the blades, reducing the frequency and cost of cleaning and maintenance.

[0030] The surface treatment method of the blade includes sanding and grinding, coating treatment and flexible polishing technology, etc. Among them, the coating treatment can enhance the weather resistance, ultraviolet resistance and aerodynamic performance of the blade. Common 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, attention should be paid to controlling the thickness and uniformity of the coating to ensure that its performance meets the expected effect. Roller coating has the advantages of less coating waste, lower environmental pollution and lower cost, and is widely used in the coating process of the blade.

[0031] The existing roller coating device adopts the structure of multiple rollers arranged along the axis of the roller at intervals to roll coat the blade. However, there will be a certain distance between adjacent rollers due to structural interference, resulting in a missed coating area during coating. When the missed coating area is re-coated, there will be an overlapping area between the previous coating and the re-coating, resulting in roller marks and uneven coating.

[0032] In addition, the existing roller coating device detects the distance by a distance sensor to control the coating of the roller during the rolling coating process of the roller and the wind turbine blade. The error is large, and it is impossible to achieve uniform pressure distribution of each roller and the wind turbine blade, resulting in insufficient uniformity precision of the roller coating thickness and affecting the roller coating effect.

[0033] In order to solve the problems in the prior art, the wind turbine blade roller coating system provided by the embodiments of the present application is provided. First, the wind turbine blade roller coating system provided by the embodiments of the present application is introduced.

[0034] Figure 1 shows a structural schematic diagram of the wind turbine blade roller coating system provided by some embodiments of the present application, Figure 2 shows a front view of the roller coating tool 300 provided by some embodiments of the present application, and Figure 3 shows a top view of the roller coating tool 300 provided by some embodiments of the present application.

[0035] As shown in FIGS. 1-3, the wind turbine blade roll coating system provided by the embodiments of the present application comprises: a moving device 100 comprising a walking vehicle 101 and a manipulator 102 mounted on the walking vehicle 101; a paint supply device 200 mounted on the walking vehicle 101; a roll coating tool 300 mounted on the manipulator 102 and connected to the paint supply device 200 by a pipeline, the roll coating tool 300 comprising a plurality of roll cylinder groups 310 arranged side by side in the radial direction, each roll cylinder group 310 comprising a plurality of roll cylinder mechanisms 311 arranged at intervals in the axial direction, and the roll cylinder mechanisms 311 of adjacent roll cylinder groups 310 being arranged at intervals in the axial direction; and the roll cylinder mechanism 311 comprising a roll cylinder 320 and an adjusting assembly 330 arranged in connection in the radial direction, the adjusting assembly 330 comprising a pressure detection member 302 and a first linear movement member 301 connected in communication, the pressure detection member 302 being connected to the roll cylinder 320 for detecting the pressure in the radial direction of the roll cylinder 320 and sending a pressure signal, and the first linear movement member 301 being connected to the roll cylinder 320 for receiving the pressure signal and adjusting the radial displacement of the roll cylinder 320 so that the pressure value of each pressure detection member 302 is within a threshold range.

[0036] Specifically, the moving device 100 comprises the walking vehicle 101 and the manipulator 102 mounted on the walking vehicle 101, the walking vehicle 101 serving as the moving platform of the entire roll coating system and being capable of freely moving along a predetermined track or path to cover the entire length of the wind turbine blade and realize all-around coating. During the roll coating of the wind turbine blade, a plurality of walking vehicles 101 can work simultaneously, for example, one walking vehicle 101 is provided on the windward side of the shell and another walking vehicle 101 is provided on the leeward side of the shell, and the two walking vehicles 101 can also work simultaneously. Alternatively, three walking vehicles 101 are provided along the spanwise direction of the wind turbine blade, the first walking vehicle travels in the tip region, the second walking vehicle travels in the spar region, and the third walking vehicle travels in the root region, so as to realize the simultaneous work of different regions of the wind turbine blade. The manipulator 102 is mounted on the walking vehicle 101 and has high-precision and multi-degree-of-freedom movement capability. The manipulator 102 can flexibly adjust the posture and position according to the programmed instructions to realize the accurate coating of different parts and complex curved surfaces of the blade by the roll coating tool 300. A plurality of manipulators 102 can be mounted on one walking vehicle 101, each manipulator 102 has the roll coating tool 300, and the plurality of manipulators 102 can work simultaneously or alternately.

[0037] The paint supply device 200 is mounted on the walking vehicle 101 and is responsible for providing stable paint supply to the roll coating tool 300. The paint supply device 200 is connected to the roll coating tool 300 by a pipeline to ensure the continuity and stability of the paint during the conveying process. The paint supply device 200 can also be equipped with functions such as flow control, pressure adjustment, 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 each roller group 310 includes a plurality of roller mechanisms 311 arranged axially in a staggered manner. 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 area of the blade surface and reduce the coating dead angle, thereby improving the efficiency of the roller coating. In the present application, the radial direction and the axial direction 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 roller coating, and the roller mechanisms 311 of adjacent roller groups 310 arranged in an axially staggered manner can avoid missing coating in the range of a single roller coating and coating accumulation at both ends of the roller mechanism 311. There is an overlapping roller coating area between adjacent roller mechanisms 311 to avoid missing coating, and the ends prone to coating accumulation are subjected to secondary roller pressing to improve the uniformity of the roller coating. In the present application, the roller group 310 can include one roller mechanism 311 or two coaxial roller mechanisms 311, or other numbers of coaxial roller mechanisms 311. There are at least two roller groups 310 arranged side by side in the radial direction, and the number of roller mechanisms 311 in each roller group 310 can be the same or different.

[0039] For example, the roller coating tool 300 includes a first roller group and a second roller group 310 arranged side by side in the radial direction, and the first roller group and the second roller group are arranged in parallel. The first roller group includes two coaxial roller mechanisms 311, and the second roller group includes one roller mechanism 311 arranged between the two roller mechanisms 311 of the first roller group. In order to increase the area of a single roller coating, 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 arranged side by side in the radial direction. The first roller group includes a first roller mechanism and a second roller mechanism arranged in parallel, and the first roller group includes a third roller mechanism and a fourth roller mechanism arranged in parallel. The third roller mechanism is arranged between the first roller mechanism and the second roller mechanism, and the second roller mechanism is arranged 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, which can be flexibly adjusted according to different areas and curvatures of the blade surface to achieve uniform and efficient coating.

[0040] The roller mechanism 311 includes a roller 320 and an adjusting assembly 330 arranged in connection in the radial direction. The roller 320 is the component that actually contacts the blade surface and is responsible for transferring the paint to the blade. The adjusting assembly 330 is used to control the contact pressure of the roller 320 with the wind turbine blade, so as to ensure that the contact pressure of the roller 320 of each roller mechanism 311 with the wind turbine blade is within a threshold range, so that the force acting on the roller 320 is more uniform, and finally the thickness of the coating is more uniform.

[0041] The adjusting assembly 330 includes a pressure detection member 302 and a first linear moving member 301 connected in communication. The pressure detection member 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 member 301 automatically adjusts the radial displacement of the roller 320 according to the received pressure signal, ensures that the pressure value of each pressure detection member 302 is kept within a preset threshold range, effectively avoids excessive extrusion or insufficient contact of the roller 320 to the surface of the blade, and thus guarantees the uniformity and quality of the coating. The pressure detection member 302 includes a tension and compression sensor, and the first linear moving member 301 includes a lead screw and nut mechanism 332, a sliding table mechanism, or a gear and rack mechanism, etc.

[0042] With continuous reference to FIGS. 2 and 3, in an embodiment of the present application, the roller group 310 further includes a second linear moving member 312 connected with the plurality of roller mechanisms 311 in the axial direction for receiving the pressure signal and controlling the radial displacement of the plurality of roller mechanisms 311.

[0043] That is, each roller group 310 includes at least one second linear moving member 312 for controlling the synchronous radial movement of at least part of the roller mechanisms 311 in the roller group 310. For example, each roller group 310 includes one second linear moving member 312 connected with all the roller mechanisms 311 in the roller group 310, and the second linear moving member 312 controls all the roller mechanisms 311 to move synchronously towards or away from the wind turbine blade based on the pressure signal of the pressure detection member 302. For example, when the pressure value detected by all the pressure detection members 302 is zero, all the 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 the roller mechanisms 311 to move towards 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 feeds back a second pressure signal to the second linear moving member 312, the second linear moving member 312 stops moving upon receiving the second pressure signal. The first linear moving member 301 moves based on the pressure signal of the pressure detection member 302. The second linear moving member 312 includes a lead screw and nut mechanism 332, a sliding table mechanism, or a gear and rack mechanism, etc.

[0044] For example, when the pressure value of the corresponding pressure detection member 302 of the first linear moving member 301 is zero, the first linear moving member 301 moves towards the wind turbine blade. Until the pressure value of the corresponding pressure detection member 302 is within the threshold range, a third pressure signal is fed back to the first linear moving member 301, and the first linear moving member 301 stops moving upon receiving the third pressure signal. So that the contact pressure of each roller 320 with the wind turbine blade is within the threshold range, improving the uniformity of the roller coating.

[0045] Each roller group 310 performs the above pressure adjustment process, so that the pressure values of all pressure detection pieces 302 in each roller group 310 are within the threshold range, and then the robot 102 drives the roller coating tool 300 to perform the roller coating operation within the specified range. Due to the different trends of different regions of the wind turbine blade, the above pressure adjustment process needs to be performed each time the roller coating is performed on different regions to ensure the uniform thickness of the overall coating of the wind turbine blade. Alternatively, during the operation of the roller coating tool 300, the pressure detection piece 302 detects the pressure value in real time, and the movement of the first linear movement piece 301 is controlled in real time, so that the uniform roller coating during the roller coating operation is realized.

[0046] Specifically, taking the second linear movement piece 312 including a sliding table mechanism as an example, the second linear movement piece 312 includes a second driving piece, a guide rail, and a sliding block, the guide rail is arranged in the radial direction, the sliding block is in sliding cooperation with the guide rail, and the second driving piece drives the sliding block to move along the guide rail. A plurality of roller mechanisms 311 are fixedly connected through a first connecting beam 314, and the first connecting beam 314 is fixedly connected with the sliding block. During the movement of the sliding block along the guide rail, the plurality of roller mechanisms 311 are driven to move in the radial direction. The plurality of first connecting beams 314 of the plurality of roller groups 310 are arranged in the axial direction and parallel to each other, and the plurality of first connecting beams 314 in one roller group 310 are arranged in the axial direction and parallel to each other. The plurality of roller groups 310 are connected together through a second connecting beam 315, and the second connecting beam 315 is parallel to the first connecting beam 314. The second linear movement pieces 312 of the roller groups 310 are connected together through the second connecting beam 315, and then connected with the robot 102 through the flanges.

[0047] Continuing to refer to FIG. 2, in some embodiments of the present application, the wind turbine blade roller coating system further includes a distance detection piece 313, which is distributed on the roller coating tool 300 and is used to send a distance signal; the robot 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 piece 313 can adopt 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 robot 102. The robot 102 then adjusts its posture and position according to these instructions to achieve precise control of the distance and angle between the roller coating tool 300 and the blade.

[0049] The plurality of distance detecting 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 power blade, and calculate the included angle and the distance with the blade, which are used for the position adjustment of the manipulator 102. Based on the distance signals of the plurality of distance detecting members 313, the manipulator 102 controls the relative distance and the relative angle of the roller coating tool 300 relative to the wind power blade. In other words, the manipulator 102 is controlled by the distance detecting members 313 to make the roller coating tool 300 reach a first preset position, the roller cylinder group 310 is controlled by the pressure detecting members 302 to reach a second preset position, and the roller cylinder 320 is further controlled by the first linear moving member 301 to reach a third preset position. The first preset position, the second preset position and the third preset position can be different in distance and / or angle relative to the wind power blade.

[0050] For example, the distance detecting members 313 are distributed at both ends of each roller cylinder group 310 and the middle part of the roller cylinder group 310 in the axial direction. For example, in the structure of the roller coating tool 300 in FIG. 2, two distance detecting members 313 are arranged at both ends of the first roller cylinder group in the axial direction, and specifically, are arranged outside the first linear moving member 301; one distance detecting member 313 is arranged on the side of the second linear moving member 312 close to the second roller cylinder group. Similarly, two distance detecting members 313 are arranged at both ends of the second roller cylinder group in the axial direction, and specifically, are arranged outside the first linear moving member 301; one distance detecting member 313 is arranged on the side of the second linear moving member 312 close to the first roller cylinder group. The roller coating tool 300 evenly distributes six distance detecting members 313.

[0051] FIG. 4 shows a front view of the mounting frame 322 of the roller cylinder mechanism 311 in FIG. 2, and FIG. 5 shows a top view of the roller cylinder mechanism 311 according to some embodiments of the present application.

[0052] As shown in FIGS. 4 and 5, in the optional embodiments of the present application, the roller cylinder mechanism 311 further comprises a rotating assembly 303, which is rotatably connected between the roller cylinder 320 and the adjusting assembly 330, and is used to rotate the roller cylinder 320 relative to the adjusting assembly 330 about the axis of the rotating assembly 303.

[0053] The rotating assembly 303 comprises a rotating shaft, a shaft sleeve and a limiting piece. For example, the rotating assembly 303 is a rotating table, the shaft sleeve is installed in the adjusting assembly 330, the rotating shaft and the shaft sleeve can be connected through a bearing to realize relative rotation, the rotating shaft is fixedly connected with the roller 320 to realize rotation of the roller 320 relative to the adjusting assembly 330. The limiting piece is arranged between the shaft sleeve and the rotating shaft to limit the rotation angle of the shaft sleeve and the rotating shaft, so as to avoid interference or complete separation of the roller 320 from the surface of the wind turbine blade. Of course, the rotating assembly 303 can also be arranged at different positions through the limiting piece to limit the rotation angle of the roller 320 relative to the adjusting assembly 330. The rotating assembly 303 realizes smaller fitting pressure between the roller 320 and the wind turbine blade, and is more conducive to precise adjustment of the pressure between the roller 320 and the wind turbine blade.

[0054] The surface of the wind turbine blade is usually a complex curved surface shape with different curvatures and inclination angles. The rotating assembly 303 enables the roller 320 to more flexibly adapt to the curvature change of the blade surface, ensures good contact with the blade surface at different positions and angles, and realizes effective paint transfer. The rotating assembly 303 enables the roller 320 to be in flexible and cushioned contact with the wind turbine blade, and realizes uniform coating effect.

[0055] FIG. 6 shows a left view of the roller mechanism 311 according to some embodiments of the present application.

[0056] Further, as shown in FIGS. 4-6, in one specific embodiment of the present application, the roller 320 comprises a rotatably connected roller body 321 and a mounting bracket 322; the adjusting assembly 330 further comprises an adjusting plate 327 connected with the pressure detection piece 302 and the first linear moving piece 301, the adjusting plate 327 is stacked with the mounting bracket 322, and the rotating assembly 303 is connected between the adjusting plate 327 and the mounting bracket 322.

[0057] The roller body 321 and the mounting bracket 322 are rotatably connected to realize rotation of the roller body 321 around its own axis, thereby realizing roller coating. The mounting bracket 322 is used to support the roller body 321. The roller body 321 has an inner cavity for conveying paint, and the circumferential wall of the roller body 321 is provided with a conveying hole communicating with the inner cavity, for conveying paint in the inner cavity to the outer surface of the roller body 321. A brush or felt structure is arranged on the outer surface of the roller body 321, for coating paint 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 with the adjusting plate 327 of the adjusting assembly 330 through the mounting frame 322, and the rotating assembly 303 is connected between the adjusting plate 327 and the mounting frame 322, so that the roller 320, the adjusting assembly 330 and the rotating assembly 303 are connected. Among them, the adjusting plate 327 and the mounting frame 322 are arranged up and down, and the rotating assembly 303 is arranged between the adjusting plate 327 and the mounting frame 322. The rotating assembly 303 is rotatably connected with the adjusting plate 327 and fixedly connected with the mounting frame 322, so that the mounting frame 322 drives the roller body 321 to rotate relative to the adjusting plate 327.

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

[0060] Continuing to refer to FIGS. 4 and 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 portions 324 surround to form a mounting area, the roller body 321 is arranged in the mounting area and detachably connected with the mounting portions 324. The mounting portions 324 include end plates 326 and pipe joints 325 connected through. The pipe joints 325 are used for connecting the roller body 321 with the paint supply device 200, and the end plates 326 are inserted into the roller body 321 and rotatably connected with the roller body 321.

[0061] That is, the connecting beam 323 and the mounting area are arranged side by side along the radial direction, and the two ends of the connecting beam 323 along the axial direction include the mounting portions 324. The connecting beam 323 is connected with the adjusting plate 327 through the rotating assembly 303, and the pressure detection piece 302 and the first linear moving piece 301 are connected with the connecting beam 323.

[0062] Among them, the mounting portions 324 include the end plates 326 and the pipe joints 325 connected through. The end plates 326 are rotatably connected with the roller body 321. The end plates 326 include bearing structures for blocking and internally supporting the end portions of the roller body 321, so as to avoid the end portions of the roller body 321 from overflowing paint during the roller coating process, causing the lap joint portions of the adjacent roller bodies 321 to be coated, and causing the roller marks to appear. The pipe joints 325 connect the inner cavities of the roller bodies 321 with the paint supply device 200, so as to realize the paint feeding of the roller bodies 321 from the two ends in the axial direction, and make the brushes or furs on the surfaces of the roller bodies 321 be evenly soaked. The pipe joints 325 can be made of stainless steel pipes to support the roller body 321.

[0063] The roller body 321 is detachably connected with the mounting portion 324, facilitating replacement of the roller body 321, and in the cleaning process of the paint supply pipeline of the roller coating tool 300, the roller body 321 can be removed, and the flushing liquid is flowed out from the pipe joint head 325 to clean the pipe joint head 325 and the pipeline connected therewith, avoiding plugging or residual paint of the pipe joint head 325, improving the roller coating effect in repeated use, prolonging the service life of the pipe joint head and the roller coating tool 300, and reducing the maintenance cost.

[0064] Specifically, the mounting portion 324 further comprises a support beam 328 and a gate 329. The support beam 328 is connected between the connecting beam 323 and the pipe joint head 325, achieving connection of the mounting portion 324 with the connecting beam 323. One end of the gate 329 is mounted on the connecting beam 323, and the other end is mounted in the pipe joint head 325, for controlling the opening and closing of the pipe joint head 325. Facilitating cutting off the pipe joint head 325 during the process of dismounting the roller body 321 to prevent paint from overflowing.

[0065] As shown in FIG. 5, in an optional embodiment of the present application, the adjusting assembly 330 comprises at least two first linear moving members 301 arranged side by side in the axial direction, and the pressure detecting member 302 is arranged between the adjacent first linear moving members 301.

[0066] In order to improve the adjustment accuracy, a plurality of pressure detecting members 302 and a plurality of first linear moving members 301 can be arranged in the axial direction of the roller 320, and each pressure adjusting member can control one or more first linear moving members 301. For example, the adjusting assembly 330 comprises two first linear moving members 301 and one pressure detecting member 302. The first linear moving members 301 are arranged in parallel with the pressure detecting member 302, and the pressure detecting member 302 is arranged between the two first linear moving members 301. The pressure detecting member 302 can be connected to the middle part of the roller 320 in the axial direction, i.e. the pressure detecting member 302 can be connected to the middle part of the connecting beam 323 in the length direction. As shown in FIG. 6, the pressure detecting member 302 can be arranged below the first linear moving members 301. One end of the first linear moving member 301 is connected with the adjusting plate 327, and the other end is connected with the robot 102. The pressure value of the pressure detecting 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 detecting member 302 can control the two linear moving members to move different distances in the radial direction, respectively. By controlling the different moving distances of the two linear moving members, respectively, the fine adjustment of the deflection of the adjusting plate 327 is achieved, and then the deflection of the roller body 321 is controlled to adapt to the curved surface roller coating of the blade surface.

[0068] Alternatively, the adjusting assembly 330 comprises two first linear moving members 301 and two pressure detecting members 302, the first pressure detecting member and the second pressure detecting member are arranged 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 the other 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 arranged alternately.

[0069] As shown in FIG. 5 and FIG. 6, in some embodiments of the present application, the first linear moving member 301 comprises a screw rod 331, a nut 332 threadedly engaged with the screw rod 331, and a first driving member 333 for driving the screw rod 331, the screw rod 331 is arranged parallel to the pressure detecting member 302 along the axis, the nut 332 is connected with one end of the pressure detecting member 302, and the first driving member 333 is connected with the other end of the pressure detecting member 302.

[0070] Specifically, the nut 332 is mounted on the side of the adjusting plate 327 away from the mounting frame 322, the screw rod 331 is engaged with the nut 332, and the first driving member 333 is connected with one end of the screw rod 331 away from the nut 332 in the length direction, for driving the screw rod 331 to move relative to the nut 332, so as to realize the approaching and moving away of the roller body 321 relative to the wind power blade.

[0071] For example, the nuts 332 of the plurality of first linear moving members 301 are all mounted on the adjusting plate 327, the first driving members 333 of the plurality of linear moving members are all connected together, and are 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 through a mounting plate 334, and the mounting plate 334 is connected with the first connecting beam 314.

[0072] FIG. 7 shows the schematic diagram of the paint supply device 200 provided by some embodiments of the present application.

[0073] As shown in Fig. 7, in some embodiments of the present application, the paint supply device 200 comprises 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 supply paint of different components; the first paint supply unit 210 comprises a first storage mechanism 211 and a first metering pump 212, the second paint supply unit 220 comprises a second storage mechanism 221 and a second metering pump 222, the first metering pump 212 is connected by pipeline between the first storage mechanism 211 and the paint inlet end of the mixing mechanism 230, the second metering pump 222 is connected by pipeline between the second storage mechanism 221 and the paint inlet end of the mixing mechanism 230, the paint outlet end of the mixing mechanism 230 is communicated with both ends of the roller mechanism 311 by pipeline; at least one of the first metering pump 212 and the second metering pump 222 comprises a screw metering pump.

[0074] The first storage mechanism 211 stores paint of the first component, has good sealing property and corrosion resistance, so as to ensure that the paint is not deteriorated or contaminated during storage. The first metering pump 212 quantitatively delivers the paint in the first storage mechanism 211 to the mixing mechanism 230 by accurately controlling the pumping amount. Similarly to the first storage mechanism 211, the second storage mechanism 221 is used to store paint of the second component. Good sealing property and corrosion resistance are also required. The second metering pump 222 quantitatively delivers the paint in the second storage mechanism 221 to the mixing mechanism 230 by accurately controlling the pumping amount. The mixing function fully mixes the two-component paint from the first paint supply unit 210 and the second paint supply unit 220. The mixing effect directly affects the performance and quality of the final coating. The roller mechanism 311 uses the mixed paint to coat the wind turbine blade, and the two-end feeding makes the brush or felt of the roller body 321 evenly wetted.

[0075] The paint supply device 200 automatically completes the proportioning and mixing of the two-component water-based paint, at least one of the first metering pump 212 and the second metering pump 222 comprises a high-precision screw metering pump, which improves the mixing precision of the paint. The high-precision screw metering pump separates and pushes the liquid in the pump cavity through two intermeshing screws, realizing 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 paint, 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 through the pressure value of the pressure detection piece 302, realizing uniform roller coating of the blade. The painting speed and pressure can also be adjusted according to the blade material and the lap joint position of 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 comprises a motor 201, a storage tank 202, stirring blades 203, a pressure detection table 204 and an electronic liquid level sensor 205. The electronic liquid level sensor 205 is installed in the storage tank 202 and used to detect the inventory of paint. The stirring blades 203 are connected with the motor 201 and installed in the storage tank 202. The motor 201 drives the stirring blades 203 to rotate to stir the paint in the storage tank 202. The pressure detection table 204 is installed on the storage tank 202 and used 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 table 204, the paint supply amount and the flow rate of the metering pump can be adjusted in real time.

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

[0078] A stop valve 206 is arranged at the discharge port of the first storage mechanism 211 and the second storage mechanism 221, and the cleaning mechanism 240 is connected to the downstream paint supply pipeline of the stop valve 206. The cleaning mechanism 240 comprises a water pump connected with the paint supply pipeline through a pipeline. The water pump pumps the cleaning liquid in a water tank to the paint supply pipeline, and then to the pipe joint head 325 through the first metering pump 212, the second metering pump 222 and the mixing mechanism 230. In the state that the roller body 321 is removed, the cleaning liquid flows out of the pipe joint head 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, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here. It should be understood that the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A wind turbine blade roll coating system, comprising: a moving device including a travelling vehicle and a robot mounted on the travelling vehicle; a paint supply device mounted on the travelling vehicle; a roll coating tool mounted on the robot and connected with the paint supply device, the roll coating tool including a plurality of roll groups arranged side by side along a radial direction, each roll group including a plurality of roll mechanisms arranged along an axial direction, the roll mechanisms of adjacent roll groups being arranged in a staggered manner along the axial direction, each roll mechanism including a roll and an adjusting assembly connected along the radial direction, the adjusting assembly including a pressure detecting member and a first linear moving member connected in communication, the pressure detecting member being connected with the roll for detecting a pressure of the roll along the radial direction and sending a pressure signal, the first linear moving member being connected with the roll for receiving the pressure signal and adjusting a radial displacement of the roll so that the pressure value of each pressure detecting member is within a threshold range.

2. The wind turbine blade roll coating system according to claim 1, wherein, The roll mechanism further includes a rotating assembly rotatably connected between the roll and the adjusting assembly for rotating the roll relative to the adjusting assembly about an axis of the rotating assembly.

3. A wind turbine blade roll coating system according to claim 2, wherein, The roll includes a roll body and a mounting frame rotatably connected. The adjusting assembly further includes an adjusting plate connected with the pressure detecting member and the first linear moving member, the adjusting plate being arranged in a stacked manner with the mounting frame, and the rotating assembly being connected between the adjusting plate and the mounting frame.

4. The wind turbine blade roll coating system according to claim 3, wherein, The mounting frame includes a connecting beam and mounting portions arranged at opposite ends of the connecting beam along a length direction, the connecting beam and the mounting portions surrounding to form a mounting area, the roll body being arranged in the mounting area and detachably connected with the mounting portions. The mounting portion includes an end plate and a pipe nipple connected in penetration, the pipe nipple being used for connecting the roll body with the paint supply device, and the end plate being inserted into the roll body and rotatably connected with the roll body.

5. The wind turbine blade roll coating system according to claim 1, wherein, The adjusting assembly includes at least two first linear moving members arranged side by side along the axial direction, and the pressure detecting member being arranged between adjacent first linear moving members.

6. The wind turbine blade roll coating system according to claim 5, wherein, The first linear moving member includes a lead screw, a nut threadedly engaged with the lead screw, and a first driving member driving the lead screw, the lead screw being arranged in parallel with the axis of the pressure detecting member, the nut being connected with one end of the pressure detecting member, and the first driving member being connected with the other end of the pressure detecting member.

7. The wind turbine blade roll coating system according to claim 1, wherein, The roll group further includes a second linear moving member connected with the plurality of roll mechanisms along the axial direction for receiving the pressure signal and controlling the radial displacement of the plurality of roll mechanisms.

8. The wind turbine blade roll coating system according to claim 1, wherein, Further including a distance detecting member arranged on the roll coating tool for sending a distance signal. The robot receives the distance signal for controlling a distance and an angle between the roll coating tool and the wind turbine blade.

9. The wind turbine blade roll coating system according to claim 1, wherein, The paint supply device includes a first paint supply unit, a second paint supply unit, and a mixing mechanism, the first and second paint supply units being used for providing paint of different components. The first paint supply unit comprises a first storage mechanism and a first metering pump, the second paint supply unit comprises a second storage mechanism and a second metering pump, the first metering pump is connected by a pipeline between the first storage mechanism and the paint inlet end of the mixing mechanism, the second metering pump is connected by a pipeline between the second storage mechanism and the paint inlet end of the mixing mechanism, and the paint outlet end of the mixing mechanism is communicated with both ends of the roller mechanism by 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 roll coating system according to claim 9, wherein, The paint supply device further comprises a cleaning mechanism connected to the discharge ends of the first storage mechanism and the second storage mechanism.

Images