Front edge guide mechanism, blade maintenance tool and lifting method of blade maintenance tool

Abstract

The invention provides a front edge guide mechanism, a blade maintenance tool and a lifting method of the blade maintenance tool. The front edge guide mechanism comprises a guide bracket; the at least two guide modules are mounted on the guide bracket, the at least two guide modules are divided into a first guide module group and a second guide module group, and an opening angle is formed between the first guide module group and the second guide module group so as to clamp the two sides of the front edge of a blade; the first guide module set and the second guide module set can roll in the spanwise direction of the blade so as to guide the blade maintenance tool to slide in the spanwise direction of the blade. According to the blade maintenance tool, the operation efficiency of the blade maintenance tool can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade maintenance, and in particular to a leading edge guide mechanism, a blade maintenance tool and a lifting method thereof. Background Art

[0002] The blades of wind turbines are prone to wear and tear or other forms of damage during operation. For example, the protective paint on the leading edge of the blades is worn, especially the wear and tear of the leading edge of the blade within 0m-10m from the tip of the blade is particularly serious. Blade wear and tear or other forms of damage will lead to loss of power generation of wind turbines, so blade maintenance has become a key task in the current unit operation and maintenance.

[0003] When repairing blades, construction workers need to perform a series of operations on the blades in the air, such as grinding, scraping putty, painting, applying protective film, etc. The workload is large and the risk factor of personnel working at high altitude is high. The offshore environment is more complex, so when repairing the blades of offshore wind turbines, the risk factor is even higher.

[0004] At present, the blade operation and maintenance methods mainly rely on the Spider-Man and hanging basket methods. Spider-Man is a construction worker who uses a reliable safety device to suspend himself in the air through the working rope and safety rope, and uses an external wind-catching device to hold himself close to the blade, and then performs single-person aerial work. Hanging basket maintenance is that the construction worker enters the hanging basket, lifts the hanging basket into the air through the traction of the working rope and safety rope, and holds the hanging basket close to the blade through the wind-catching device to perform blade maintenance work. Both Spider-Man maintenance and hanging basket maintenance require ground wind-catching devices for stability and have low operating efficiency. In addition, the operating scope of Spider-Man maintenance and hanging basket maintenance is limited and the safety is low. Summary of the invention

[0005] An object of the present invention is to provide a leading edge guide mechanism, a blade repair tool and a lifting method thereof which can improve the operating efficiency of a blade repair tool.

[0006] Another object of the present invention is to provide a leading edge guide mechanism and a blade repair tool including the leading edge guide mechanism, which can achieve independent attachment of a blade repair tool to a blade without requiring a ground wind-grabbing device.

[0007] Another object of the present invention is to provide a blade maintenance tool that can improve operation safety.

[0008] Another object of the present invention is to provide a blade maintenance tool that can improve the working range.

[0009] According to one aspect of the present invention, a leading edge guide mechanism of a blade repair tool is provided, the leading edge guide mechanism comprising: a guide bracket; at least two guide modules installed on the guide bracket, the at least two guide modules are divided into a first guide module group and a second guide module group, an open angle is formed between the first guide module group and the second guide module group for clamping both sides of the leading edge of the blade, the first guide module group and the second guide module group can roll along the span direction of the blade to guide the blade repair tool to slide along the span direction of the blade.

[0010] Optionally, each of the guide modules is swingably mounted on the guide bracket to adjust an opening angle between the first guide module group and the second guide module group.

[0011] Optionally, each of the guide modules includes a roller bracket and a guide roller, the guide roller is mounted on the roller bracket, the guide bracket includes a roller swing arm, the roller bracket is swingably mounted on the roller swing arm, and a first limit member is provided on the roller swing arm, and the first limit member is used to limit the swing angle of the roller bracket.

[0012] Optionally, the guide bracket further includes a guide base, the rolling element swing arm is swingably mounted on the guide base, a second limiter is provided on the guide base, and the second limiter is used to limit the swing angle of the rolling element swing arm.

[0013] Optionally, each of the guide modules includes at least two rolling element brackets, and each of the rolling element brackets is provided with at least two guide rolling elements.

[0014] Optionally, the guide bracket further includes a guide mounting frame, the guide base is detachably mounted on the guide mounting frame, and the leading edge guide mechanism is mounted to the blade maintenance tool through the guide mounting frame.

[0015] Optionally, the at least two guide modules are staggered along the span direction of the blade.

[0016] According to another aspect of the present invention, a blade maintenance tool is provided, the blade maintenance tool comprising the leading edge guide mechanism as described above, the blade maintenance tool also comprising a main platform mechanism, the leading edge guide mechanism is installed above the main platform mechanism, the main platform mechanism comprises a main basket body, and the main basket body comprises a main working platform.

[0017] Optionally, the main platform mechanism comprises at least one pair of clamping mechanisms, which are arranged in pairs on the inner side of the main basket and are separated from each other to clamp the pressure surface and the suction surface of the blade respectively.

[0018] Optionally, the clamping mechanism comprises a retractable device, which can be retracted to increase or decrease the interval between the clamping mechanisms arranged in pairs.

[0019] Optionally, one side of the retractable device is mounted to the main basket body, and the other side of the retractable device is provided with a clamping roller capable of rolling along the span direction of the blade.

[0020] Optionally, the main basket body includes a first side main basket body, a second side main basket body and a front main basket body which are connected in sequence, and the first side main basket body, the front main basket body and the second side main basket body are connected in sequence to form a U shape to respectively surround the pressure surface, leading edge and suction surface of the blade, and the clamping mechanism is arranged on the inner side of the first side main basket body and the second side main basket body.

[0021] Optionally, the main platform mechanism further includes an anti-collision device, and the anti-collision device includes a blade anti-collision module arranged on the inner side of the front main basket body.

[0022] Optionally, the anti-collision device further includes a tower anti-collision module, and the tower anti-collision module is arranged on the other side of the first side main basket body and the second side main basket body opposite to the side connected to the front main basket body.

[0023] Optionally, the main platform mechanism also includes a lifting mechanism arranged on the main basket body, the lifting mechanism is used to lift the blade repair tooling, the lifting mechanism includes a hoist and an operating rope, one end of the operating rope is connected to the hoist, and the other end of the operating rope is used to connect to the nacelle of the wind turbine generator set.

[0024] Optionally, the blade repair tool further comprises an auxiliary platform mechanism for providing an auxiliary working platform, wherein the auxiliary platform mechanism is installed below the main platform mechanism and opposite to the leading edge of the blade.

[0025] Optionally, the auxiliary platform mechanism includes an auxiliary platform bracket and an auxiliary platform ladder, the auxiliary working platform is laid on the lower part of the auxiliary platform bracket, the auxiliary platform ladder is arranged on the side of the auxiliary platform bracket, and an openable and closable manhole is provided at a position of the main working platform corresponding to the auxiliary platform mechanism.

[0026] Optionally, the main basket body is provided with a winch and / or a wind-catching anchor point for connecting to a wind-catching rope.

[0027] According to another aspect of the present invention, a method for lifting a blade repair tool is provided, the lifting method comprising: setting the blade to be repaired to point to the ground; connecting one end of the wind rope to the winch or the wind anchor point, and connecting the other end of the wind rope to the wind point; using the hoist to pull the working rope to lift the blade repair tool along the tower to the height of the blade tip; using the working rope in conjunction with the wind rope to translate the blade repair tool to the tip area of ​​the blade, so that the leading edge guide mechanism is in contact with the leading edge of the blade, and the clamping mechanism is in contact and fixed with the web position of the blade; using the working rope to lift the blade repair tool to the position to be repaired.

[0028] According to the present invention, the blade repair tool uses the leading edge guide mechanism to clamp the blade, so that the blade repair tool and the blade can be independently attached. In the case of low wind force, during the blade operation, no ground wind-catching device is required. In addition, by using the leading edge guide mechanism to guide the blade repair tool to slide along the span direction of the blade, the blade repair tool can be quickly operated during the lifting operation, thereby improving efficiency.

[0029] According to the present invention, the clamping mechanism is clamped at the web position of the blade, which can fix the relative position of the blade repair tool and the blade, so that the blade repair tool does not need to use a ground wind-catching device to catch the wind during operation, and the tool can be moved up and down, effectively solving the problem of reliability of the wind-catching anchor point during maintenance operations.

[0030] According to the present invention, the swing design of the guide module can maintain a larger contact area between the guide module and the leading edge of the blade, thereby ensuring that the blade maintenance tooling does not damage the blade during operation.

[0031] According to the present invention, the main platform mechanism is U-shaped and follows the shape of the leading edge of the blade, which greatly increases the working space of construction personnel in the main platform mechanism. Construction personnel do not need to lean their bodies out of the blade maintenance tooling to perform maintenance work, thereby improving safety during operation.

[0032] According to the present invention, by providing an auxiliary platform mechanism, the working area of ​​the blade surface can be increased and the construction efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

[0034] Figure 1 is a perspective view of a blade repair tool according to an embodiment of the present invention when viewed toward the leading edge of the blade;

[0035] Figure 2is a perspective view of a blade repair tool according to an embodiment of the present invention when viewed toward the trailing edge of the blade;

[0036] Figure 3 is a perspective view of a blade repair tool according to an embodiment of the present invention when viewed from the side;

[0037] Figure 4 Yes Figure 1 an enlarged view of a portion including a leading edge guide mechanism;

[0038] Figure 5 Yes Figure 1 An enlarged view of a portion including a main platform mechanism;

[0039] Figure 6 is a rear view of a main platform mechanism according to an embodiment of the present invention;

[0040] Figure 7 is a top view of a main platform mechanism according to an embodiment of the present invention;

[0041] Figure 8 is a schematic diagram of a clamping mechanism according to an embodiment of the present invention;

[0042] Fig. 9 Yes Figure 1 an enlarged view of a portion including an auxiliary platform mechanism;

[0043] Fig.10 It is a schematic diagram of the lifting and working process of the blade repair tool according to an embodiment of the present invention.

[0044] Symbols in the accompanying drawings: 1-blade, 1a-leading edge, 1b-pressure surface, 1c-suction surface, 2-wind rope, 3-wind point, 4-tower, 1000-blade maintenance tooling, 100-leading edge guide mechanism, 110-guide bracket, 111-rolling element swing arm, 111a-first limiter, 112-guide base, 112a-second limiter, 113-guide mounting frame, 120-guide module, 120a-first guide module group, 120b-second guide module group, 121-rolling element bracket, 121a-first bracket, 121b-second bracket, 122-guide roller, 200-main platform mechanism, 210-main basket, 210a-main working platform Platform, 210a1-openable and closable manhole, 211-first side main basket body, 212-front main basket body, 213-second side main basket body, 214-tool box, 215-wind-catching anchor point, 220-clamping mechanism, 221-telescopic device, 222-clamping rolling element, 223-clamping back plate, 224-clamping handle, 230-anti-collision device, 231-blade anti-collision module, 232-tower anti-collision module, 240-lifting mechanism, 241-safety lock, 242-hoist, 243-electric control cabinet, 244-operating rope, 250-winch, 300-auxiliary platform mechanism, 310-auxiliary working platform, 320-auxiliary platform bracket, 340-auxiliary platform tool box. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] Below, we will refer to Figures 1 to 9 The leading edge guide mechanism according to an embodiment of the present invention and the blade repair tool including the leading edge guide mechanism are described. Figures 1 to 4 A leading edge guide mechanism according to an embodiment of the present invention is described.

[0048] Figure 1 is a three-dimensional view of a blade repair tool according to an embodiment of the present invention when viewed toward the leading edge of the blade, Figure 2 is a three-dimensional view of a blade repair tool according to an embodiment of the present invention when viewed toward the trailing edge of the blade, Figure 3is a perspective view of a blade repair tool according to an embodiment of the present invention when viewed from the side, Figure 4 Yes Figure 1 The enlarged view of the portion including the leading edge guide mechanism is enlarged. Figures 1 to 4 The blade 1 is shown in the figure to illustrate the positional relationship between the leading edge guide mechanism and the blade maintenance tool and the blade during the maintenance operation.

[0049] like Figures 1 to 3 As shown, the blade repair tool 1000 according to the embodiment of the present invention comprises a leading edge guide mechanism 100. The leading edge guide mechanism 100 may be installed at the upper end of the blade repair tool 1000 and may be used to guide the blade repair tool 1000 to slide along the span direction of the blade 1.

[0050] According to an embodiment of the present invention, Figure 4 As shown, the leading edge guide mechanism 100 may include a guide bracket 110 and at least two guide modules 120. The at least two guide modules 120 may be mounted on the guide bracket 110, and the at least two guide modules 120 are divided into a first guide module group 120a and a second guide module group 120b, wherein an open angle is formed between the first guide module group 120a and the second guide module group 120b for clamping both sides of the leading edge 1a of the blade 1, and the first guide module group 120a and the second guide module group 120b can roll along the span direction of the blade 1 to guide the blade maintenance tool to slide along the span direction of the blade 1.

[0051] The blade repair tool according to the embodiment of the present invention uses the leading edge guide mechanism 100 to clamp the blade 1, so that the blade repair tool can be independently attached to the blade. In the case of low wind force, the blade repair tool does not need a ground wind-catching device during operation. In addition, by using the leading edge guide mechanism 100 to guide the blade repair tool 1000 to slide along the span direction of the blade 1, the blade repair tool can be quickly operated during the lifting operation, thereby improving efficiency.

[0052] According to an embodiment of the present invention, at least two guide modules 120 can be divided into a first guide module group 120a and a second guide module group 120b according to the clamping position. The first guide module group 120a and the second guide module group 120b can be respectively attached to the blade 1 on both sides of the leading edge 1a of the blade 1 and clamp the blade 1. Figure 4Only two guide modules 120 are shown in the figure, and the first guide module group 120a and the second guide module group 120b each include one guide module 120. However, the number of guide modules 120 in the first guide module group 120a and the second guide module group 120b is not limited thereto, as long as the blade 1 can be clamped on both sides of the leading edge 1a of the blade 1 and can be rolled along the span direction of the blade 1. As an example, the leading edge guide mechanism 100 may include three guide modules 120, the first guide module group 120a includes one guide module 120, and the second guide module group 120b includes two guide modules 120. As an example, the leading edge guide mechanism 100 may include four guide modules 120, the first guide module group 120a includes two guide modules 120, and the second guide module group 120b includes two guide modules 120.

[0053] According to an embodiment of the present invention, at least two guide modules 120 can be staggered along the span direction of the blade 1 to avoid interference between the two guide modules 120 when they are arranged at the same height, thereby increasing the contact area between each guide module 120 and the leading edge 1a of the blade 1, ensuring that the blade maintenance tool 1000 does not damage the blade 1 during operation.

[0054] According to an embodiment of the present invention, each guide module 120 is swingably mounted on the guide bracket 110 to adjust the opening angle between the first guide module group 120a and the second guide module group 120b. Due to the problems of the blade 1's own airfoil, pre-bend, and irregular shape of the leading edge from the root to the tip, the contact position, contact angle, and contact area between the guide module 120 and the leading edge 1a of the blade 1 change at any time during the process of the blade repair tool 1000 sliding up and down along the leading edge 1a of the blade 1. According to an embodiment of the present invention, by making each guide module 120 swingably mounted on the guide bracket 110, the opening angle between the first guide module group 120a and the second guide module group 120b can be adjusted, so that the guide module 120 can maintain a larger contact area with the leading edge 1a of the blade 1 during the blade repair tool 1000 rolling up and down along the blade 1, ensuring that the blade repair tool 1000 does not damage the blade 1 during the operation.

[0055] As an example, Figure 4 As shown, each guide module 120 may include a roller bracket 121 and a guide roller 122, and the guide roller 122 is mounted on the roller bracket 121. As an example, each guide module 120 may include at least two roller brackets 121, and at least two guide rollers 122 may be disposed on each roller bracket 121. Figure 41 shows that each guide module 120 includes two roller brackets 121, and each roller bracket 121 is provided with two guide rollers 122. However, the number of roller brackets 121 provided in each guide module 120 and the number of guide rollers 122 provided on each roller bracket 121 are not limited thereto. As an example, the guide roller 122 can be a roller, which is conducive to increasing the contact area with the blade 1.

[0056] As an example, the guide bracket 110 may include a rolling element swing arm 111, and the rolling element bracket 121 is swingably mounted on the rolling element swing arm 111. The rolling element swing arm 111 is provided with a first limiter 111a, and the first limiter 111a is used to limit the swing angle of the rolling element bracket 121.

[0057] As an example, the rolling element bracket 121 may include a first bracket 121a and a second bracket 121b arranged at both ends of the first bracket 121a, and the two ends of the guide rolling element 122 may be rollingly connected with the second bracket 121b arranged at both ends of the first bracket 121a. In the case of setting two guide rolling elements 122, the second bracket 121b may be Y-shaped. The two ends of the rolling element bracket 121 may be rotatably connected with a pair of rolling element swing arms 111 (for example, connected by a pin), and limited by the first stopper 111a, thereby limiting the swing amplitude of the rolling element bracket 121. As an example, the first stopper 111a may be a pair of bolts fixed to the rolling element swing arm 111, and the end of the first bracket 121a is located between the pair of bolts and spaced apart from the pair of bolts, thereby limiting the swing amplitude of the rolling element bracket 121. The above describes the structure of the rolling element bracket 121 and the first stopper 111a as an example, but the specific structures of the two are not limited thereto, as long as the function of installing the guide rolling element 122 and the function of limiting can be achieved.

[0058] As an example, Figure 4 As shown, the guide bracket 110 may also include a guide base 112 , and the rolling element swing arm 111 is swingably mounted on the guide base 112 . A second limiter 112 a is provided on the guide base 112 , and the second limiter 112 a is used to limit the swing angle of the rolling element swing arm 111 .

[0059] As an example, the rolling element swing arm 111 can be rotatably connected to the guide base 112 (for example, connected by a pin shaft), and can be limited by the second limiter 112a, so as to limit the swing amplitude of the rolling element swing arm 111. As an example, the second limiter 112a can be a bolt fixed to the second bracket 121b and extending a certain length toward each of the pair of rolling element swing arms 111. The second limiter 112a is spaced apart from the rolling element swing arm 111, so as to limit the swing amplitude of the rolling element swing arm 111. The structure of the second limiter 112a is described above as an example, but its specific structure is not limited thereto, as long as the limiting function can be achieved.

[0060] As described above, the guide module 120 according to the embodiment of the present invention can increase the contact area between the guide module 120 and the leading edge 1a of the blade 1 through two-stage swing adjustment, ensuring that the blade maintenance tool 1000 does not damage the blade 1 during operation.

[0061] According to an embodiment of the present invention, the guide bracket 110 may further include a guide mounting frame 113, the guide base 112 may be detachably mounted on the guide mounting frame 113, and the leading edge guide mechanism 100 may be mounted to the blade repair tool 1000 via the guide mounting frame 113. As an example, the guide base 112 may be a substantially triangular support frame, and the rolling element swing arm 111 may be mounted on the hypotenuse of the triangular support frame, so that the guide module 120 may face both sides of the leading edge 1a of the blade 1. As an example, for blades of different models, the orientation of the guide module 120 may be adjusted by replacing the guide base 112, so as to increase the contact area between the guide module 120 and the leading edge 1a of the blade 1.

[0062] As an example, the guide mounting frame 113 may be approximately in the shape of an isosceles trapezoid, and the guide base 112 may be detachably mounted on the bottom surface of the guide mounting frame 113. However, the shape of the guide mounting frame 113 is not limited thereto, as long as it can support the guide base 112 and can mount the leading edge guide mechanism 100 to the blade repair tool 1000. As an example, the guide base 112 and the guide mounting frame 113 may be formed by splicing square tubes, but the present invention is not limited thereto.

[0063] Return to the reference of this application Figures 1 to 3 The blade repair tool 1000 according to the embodiment of the present invention may further include a main platform mechanism 200 . The main platform mechanism 200 is installed (eg, detachably installed) below the leading edge guide mechanism 100 .

[0064] Figure 5 Yes Figure 1 The enlarged view of the part containing the main platform mechanism, Figure 6 is a rear view of the main platform mechanism according to an embodiment of the present invention, Figure 7is a top view of the main platform mechanism according to an embodiment of the present invention, Figure 8 is a schematic diagram of a clamping mechanism according to an embodiment of the present invention.

[0065] like Figure 5 As shown, the main platform mechanism 200 may include a main basket body 210, and the main basket body 210 may include a main working platform 210a. The main basket body 210 may include a first side main basket body 211, a second side main basket body 213 and a front main basket body 212 connected in sequence, and the first side main basket body 211, the front main basket body 212 and the second side main basket body 213 are connected in sequence to form a U shape to respectively surround the pressure surface 1b, the leading edge 1a and the suction surface 1c of the blade 1. According to an embodiment of the present invention, by forming the main platform mechanism 200 into a U shape to surround the pressure surface 1b, the leading edge 1a and the suction surface 1c of the blade 1, the conforming effect with the blade is ensured, and the construction operation space can be increased to improve the operation safety.

[0066] As an example, the main basket 210 can be formed by splicing square tubes together, and the main working platform 210a is arranged at the lower part of the main basket 210 to provide a platform for construction work. Figure 7 As shown, a tool box 214 may be provided on the main basket body 210, and the tool box 214 is used for storing tools and materials during on-site operations. Figure 7 The tool box 214 shown in FIG. 1 is disposed outside the front main basket body 212, but the present invention is not limited thereto. As an example, Figure 7 As shown, the main basket body 210 may also be provided with a wind-catching anchor point 215. During the lifting process of the blade repair tool 1000 (in the process of lifting the blade repair tool 1000 onto the blade 1 or lowering the blade repair tool 1000 from the blade 1), the wind-catching rope 2 (such as Fig.10 The winch 250 shown in the figure or described below is connected to the wind-catching anchor point 215 to ensure the stability of the blade repair tool 1000 during the lifting process.

[0067] According to an embodiment of the present invention, Figure 5 As shown, the main platform mechanism 200 may include at least one pair of clamping mechanisms 220, which are arranged in pairs on the inner side of the main basket body 210 and are separated from each other to respectively clamp the pressure surface 1b and the suction surface 1c of the blade 1. The clamping mechanism 220 is clamped at the web position of the blade 1, and the relative position of the blade maintenance tool and the blade can be fixed, so that the blade maintenance tool 1000 can realize the up and down movement of the tool without using a ground wind-catching device to catch the wind during the operation, which effectively solves the problem of the reliability of the wind-catching anchor point during the maintenance operation.

[0068] As an example, the clamping mechanism 220 may be disposed inside the first side main basket body 211 and the second side main basket body 213. Figure 5Only one pair of clamping mechanisms 220 is shown, but the present invention is not limited to this. For example, two or more pairs of clamping mechanisms 220 may be provided, and one pair of clamping mechanisms 220 and another pair of clamping mechanisms 220 may be separately provided on the inner side of the main basket body 210 along the height direction of the blade repair tooling 1000.

[0069] like Figure 8 As shown, the clamping mechanism 220 may include a retractable device 221, which can be retracted to increase or decrease the interval between the clamping mechanisms 220 arranged in pairs, so that the interval between the clamping mechanisms 220 can be adjusted according to the thickness change of the blade 1 to ensure that a pair of clamping mechanisms 220 clamp the blade 1. As an example, the retractable device 221 can be retracted manually or electrically, and the present invention does not make specific restrictions on this. As an example of manual adjustment, Figure 8 As shown in the figure, the clamping mechanism 220 includes a clamping handle 224 , and the construction personnel can realize the extension and retraction of the retractable device 221 by rotating the clamping handle 224 .

[0070] As an example, Figure 8 As shown, the clamping mechanism 220 may further include a clamping roller 222, which is disposed on the side of the retractable device 221 facing the blade 1. The clamping roller 222 may be, for example, a roller. By providing the clamping roller 222, the blade maintenance tool can slide along the span direction of the blade 1, which can meet the needs of quick operation during the lifting and lowering operation of the blade maintenance tool, thereby improving efficiency.

[0071] As an example, the clamping mechanism 220 may further include a clamping back plate 223 , which is disposed on a side of the retractable device 221 facing the main basket body 210 , and the clamping mechanism 220 is fixed to the inner side of the main basket body 210 via the clamping back plate 223 .

[0072] As an example, Figure 6 and Figure 7 As shown, the main platform mechanism 200 may further include an anti-collision device 230. The anti-collision device 230 may include a blade anti-collision module 231 disposed on the inner side of the front main basket body 212. As an example, the blade anti-collision module 231 may be disposed along the width direction ( Figure 5 A pair of elastic blocks separated from each other (in the thickness direction of the corresponding blade 1) prevent the main platform mechanism 200 from causing collision to the blade 1.

[0073] As an example, Figure 6As shown, the anti-collision device 230 may further include a tower anti-collision module 232. The tower anti-collision module 232 may be arranged on the other side of the first side main basket body 211 and the second side main basket body 213 opposite to the side connected to the front main basket body 212. When installing the blade maintenance tool 1000, before reaching the blade 1, the blade maintenance tool 1000 may be lifted along the tower of the wind turbine generator set, and the other side of the first side main basket body 211 and the second side main basket body 213 opposite to the side connected to the front main basket body 212 faces the tower. In order to prevent collision with the tower, a tower anti-collision module 232 may be arranged at this position. The tower anti-collision module 232 may include a pair of elastic blocks arranged on the first side main basket body 211 (along the height direction of the main basket body 210 ( Figure 5 The corresponding blade 1 in the span direction) is separated from each other) and a pair of elastic blocks (along the height direction ( Figure 5 The corresponding blades 1 are separated from each other in the span direction).

[0074] According to an embodiment of the present invention, Figure 5 As shown, the main platform mechanism 200 may also include a lifting mechanism 240 disposed on the main basket 210, and the lifting mechanism 240 is used to lift the blade repair tool 1000. As an example, the lifting mechanism 240 may include a safety lock 241, a hoist 242, an electric control cabinet 243 and an operating rope (wire rope) 244. The safety lock 241 and the hoist 242 may be installed on the main basket 210, one end of the operating rope 244 is fixed in the nacelle of the wind turbine generator set, and the other end is connected to the hoist 242, and the blade repair tool 1000 is moved up and down by controlling the hoist 242. The safety lock 241 is connected to the operating rope 244. The electric control cabinet 243 serves as a control system for the hoist 242 to realize the operation and protection of the hoist 242. As an example, a safety lock 241, a hoist 242 and a working rope 244 may be respectively provided on the first side main basket 211 and the second side main basket 213, so that the blade repair tool 1000 can move up and down smoothly. The setting position of the electric control cabinet 243 is not specifically limited. In addition, as an example, only one electric control cabinet 243 may be provided to control two hoists 242.

[0075] As an example, Figure 5 As shown, a winch 250 may also be provided on the main basket 210 (e.g., the front main basket 212). When the blade 1 is a blade of an offshore wind turbine generator set, the blade repair tool 1000 or its components need to be towed by a ship, and the winch 250 is used to connect with the ship anchor. In addition, when the blade repair tool 1000 is lifted up or lowered, the winch 250 may be connected to the wind rope 2. When a problem occurs with the winch 250, the wind rope 2 may be connected to the wind anchor point 215.

[0076] Return to the reference of this application Figures 1 to 3 The blade repair tool 1000 according to the embodiment of the present invention may further include an auxiliary platform mechanism 300. The auxiliary platform mechanism 300 is installed (e.g., detachably installed) below the main platform mechanism 200 and opposite to the leading edge 1a of the blade 1. According to the embodiment of the present invention, by providing the auxiliary platform mechanism 300, the blade surface working area can be increased and the construction efficiency can be improved.

[0077] Fig. 9 Yes Figure 1 The enlarged view of the part containing the auxiliary platform mechanism. Fig. 9 As shown, the auxiliary platform mechanism 300 may include an auxiliary platform bracket 320, an auxiliary platform ladder 330 and an auxiliary platform tool box 340, and the auxiliary work platform 310 is laid on the lower part of the auxiliary platform bracket 320. The auxiliary platform ladder 330 can be arranged on the side of the auxiliary platform bracket 320. Compared with arranging the auxiliary platform ladder 330 on the side facing the blade 1, the working space can be increased to prevent interference with blade maintenance. In addition, since the auxiliary platform mechanism 300 is arranged at an inclination similar to the blade 1, the auxiliary platform ladder 330 is arranged on the other side of the auxiliary platform bracket 320 opposite to the side facing the blade 1 (that is, Fig. 9 The auxiliary platform tool box 340 may be disposed on the other side of the auxiliary platform bracket 320 opposite to the side facing the blade 1 (ie, Fig. 9 side facing outwards).

[0078] As an example, an openable and closable manhole 210a1 may be provided at a position of the main working platform 210a corresponding to the auxiliary platform mechanism 300. When construction workers need to go down to the auxiliary platform mechanism 300, they may open the openable and closable manhole 210a1 and enter the auxiliary working platform 310 through the auxiliary platform ladder 330.

[0079] According to the blade repair tool described above, the leading edge 1a, pressure surface 1b and suction surface 1c of the blade 1 can be repaired (for example, repairing damage, cracks or lightning damage, etc.). At the same time, by adjusting the extension distance of the first side main basket body 211 and the second side main basket body 213 of the main basket body 210, the trailing edge of the blade can also be repaired, for example, at least the trailing edge at the blade tip can be repaired.

[0080] According to the blade repair tool described above, the leading edge guide mechanism 100, the main platform mechanism 200 and the auxiliary platform mechanism 300 use a modular design for easy disassembly and transportation. As an example, the leading edge guide mechanism 100, the main platform mechanism 200 and the auxiliary platform mechanism 300 can be connected by bolts for easy assembly.

[0081] According to an embodiment of the present invention, the leading edge guide mechanism 100 is in contact with the leading edge 1a of the blade 1, and the clamping mechanism 220 of the main platform mechanism 200 is in contact with the pressure surface 1b and the suction surface 1c (at the web) of the blade 1. Therefore, during operation, the blade maintenance tool 1000 is moved up and down along the leading edge 1a of the blade 1 by the traction of the working rope 244, thereby realizing the maintenance process of the blade 1.

[0082] In addition, according to an embodiment of the present invention, construction personnel can also enter the auxiliary platform mechanism 300 from the main platform mechanism 200, so that the construction personnel's working area is more than doubled, thereby improving work efficiency. At the same time, the main platform mechanism 200 implements a U-shaped design, which follows the shape of the leading edge of the blade, greatly increasing the construction personnel's working space in the main platform mechanism 200. Construction personnel do not need to extend their bodies outside the blade maintenance tooling 1000 to perform maintenance operations, thereby improving safety during operations. In addition, through the clamping mechanism 220 of the leading edge guide mechanism 100 and / or the main platform mechanism 200, the blade maintenance tooling 1000 does not need a ground wind-catching device during operation, and the tooling can be moved up and down, effectively solving the problem of the reliability of the wind-catching anchor point during maintenance operations.

[0083] The following describes the installation, lifting method and operation process of the blade repair tool according to an embodiment of the present invention only as an example. It should be understood that the installation, lifting method and operation process are not the only way and should not be interpreted as limiting the structure of the blade repair tool described above. Fig.10 It is a schematic diagram of the lifting and working process of the blade repair tool according to an embodiment of the present invention.

[0084] like Fig.10 As shown, the blade 1 to be repaired can be set to point to the ground, so that the extension direction of the blade 1 to be repaired is substantially parallel to the tower, and to prevent the blade tip from sweeping the tower, the blade 1 forms an inclined angle with the tower 4. The various parts of the blade repair tool 1000 (the leading edge guide mechanism 100, the main platform mechanism 200 and the auxiliary platform mechanism 300) are transferred to the bottom of the unit.

[0085] Next, the main platform mechanism 200 may be assembled, and the leading edge guide mechanism 100 may be mounted on the main platform mechanism 200 .

[0086] Next, one end of the working rope 244 and the safety rope are fixed to a suitable position of the cabin, and the working rope 244 and the safety rope are lowered and installed on the main platform mechanism 200, and the other end of the working rope 244 is connected to the hoist 242. Then, the main platform mechanism 200 is tested.

[0087] Next, a wind-grabbing device may be arranged and connected to the wind-grabbing anchor point 215. Specifically, the wind-grabbing device may include a wind-grabbing rope 2 and a wind-grabbing point 3. The wind-grabbing point 3 is fixed to the ground (onshore wind turbine) or the seabed (offshore wind turbine). One end of the wind-grabbing rope 2 is connected to the winch 250 or the wind-grabbing anchor point 215, and the other end is connected to the wind-grabbing point 3.

[0088] Next, the hoist 242 is used to pull the working rope 244 to lift the installed main platform mechanism 200 and the leading edge guide mechanism 100 along the tower 4 to a certain height, and then the auxiliary platform mechanism 300 is installed.

[0089] Next, if Fig.10 As shown, the installed blade maintenance tool 1000 is lifted along the tower 4 to the tip area of ​​the blade 1 (the specific position is not limited, for example, a position where the blade maintenance tool 1000 can be installed) by pulling the working rope 244 by the hoist 242. Then, the blade maintenance tool 1000 is translated to the tip area of ​​the blade 1 by cooperating with the wind rope 2, for example, by manually or electrically tightening the wind rope 2, so that the leading edge guide mechanism 100 is in contact with the leading edge 1a of the blade 1, and the clamping mechanism 220 of the main platform mechanism 200 is in contact with the web of the blade 1 and fixed.

[0090] Next, since the leading edge guide mechanism 100 of the blade is in contact with the leading edge of the blade and the clamping mechanism 220 is clamped at the web position of the blade 1, the stability of the blade repair tool 1000 can be maintained by only lifting the blade repair tool 1000 upwards through the working rope 244, and the tool can be moved up and down to lift the blade repair tool 1000 to the position to be repaired. During this process, as the thickness of the blade 1 changes, the clamping mechanism 220 is adjusted at any time to ensure that it is fitted and fixed to the web position. When the maintenance is completed, the blade repair tool 1000 is lowered to the ground. The blade repair tool 1000 can be disassembled as needed, or it can be chosen not to be disassembled. The lowering process is the reverse operation of the above-mentioned lifting process. That is, when the leading edge guide mechanism 100 of the blade maintenance tool 1000 contacts the leading edge of the blade and the clamping mechanism 220 is clamped at the web position of the blade 1, the blade maintenance tool 1000 can be lowered using only the operating rope 244. When the blade maintenance tool 1000 is lowered to the tip area of ​​the blade 1, the operating rope 244 can be used in conjunction with the wind rope 2, such as manually or electrically releasing the wind rope 2, to translate the blade maintenance tool 1000 onto the tower 4. Finally, the blade maintenance tool 1000 is lowered to the ground by lowering the operating rope 244.

[0091] According to an embodiment of the present invention, Fig.10As shown, the blade 1 to be repaired is set to point to the ground. In order to avoid the blade 1 from sweeping the tower, the blade 1 is not completely perpendicular to the ground but forms a certain inclination angle with the tower 4. Since the blade 1 forms an inclination angle with the tower 4, during the repair process, the traction force of the working rope 244 on the blade repair tool 1000 will be decomposed into a vertical component and a horizontal component, and the vertical component is balanced with the gravity of the blade repair tool 1000. In addition, the leading edge guide mechanism 100 and the clamping mechanism 220 of the blade repair tool 1000 are in contact with the leading edge of the blade 1, so that the leading edge of the blade 1 is subjected to force to overcome the horizontal component of the traction force of the working rope 244.

[0092] In addition, according to the embodiment of the present invention, the wind rope can be manually or electrically retracted and extended inside the blade maintenance tool, so that the tool can be manually controlled. In addition, through the contact force between the leading edge of the blade and the leading edge of the blade by the blade leading edge guide mechanism and the web of the blade clamped by the clamping mechanism, the tool can reduce the dependence of the tool on the wind rope during the operation of the blade maintenance tool, and the tool can improve the reliability of the wind rope without using the wind during the operation.

[0093] In the above description, the blade repair tool 1000 is not assembled, but assembled at the construction site. However, the present invention is not limited thereto, and the blade repair tool 1000 may also be assembled, in which case the above assembly steps are omitted.

[0094] According to the leading edge guide mechanism described above and the blade repair tool including the leading edge guide mechanism of the present invention, beneficial technical effects not limited to the following description can be achieved.

[0095] According to the present invention, the blade repair tool uses the leading edge guide mechanism to clamp the blade, so that the blade repair tool and the blade can be independently attached. In the case of low wind force, during the blade operation, no ground wind-catching device is required. In addition, by using the leading edge guide mechanism to guide the blade repair tool to slide along the span direction of the blade, the blade repair tool can be quickly operated during the lifting operation, thereby improving efficiency.

[0096] According to the present invention, the clamping mechanism is clamped at the web position of the blade, which can fix the relative position of the blade repair tool and the blade, so that the blade repair tool does not need to use a ground wind-catching device to catch the wind during the operation, and the tool can be moved up and down, which effectively solves the problem of the reliability of the wind-catching point during the maintenance operation.

[0097] According to the present invention, the swing design of the guide module can maintain a larger contact area between the guide module and the leading edge of the blade, thereby ensuring that the blade maintenance tooling does not damage the blade during operation.

[0098] According to the present invention, the main platform mechanism is U-shaped and follows the shape of the leading edge of the blade, which greatly increases the working space of construction personnel in the main platform mechanism. Construction personnel do not need to lean their bodies out of the blade maintenance tooling to perform maintenance work, thereby improving safety during operation.

[0099] According to the present invention, by providing an auxiliary platform mechanism, the working area of ​​the blade surface can be increased and the construction efficiency can be improved.

[0100] Although exemplary embodiments of the present invention have been described above, those skilled in the art will recognize that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the claims.

Claims

1. A leading edge guide mechanism for a blade repair tool, characterized in that: The leading edge guiding mechanism (100) comprises: A guide bracket (110); At least two guide modules (120) are mounted on the guide bracket (110), and the at least two guide modules (120) are divided into a first guide module group (120a) and a second guide module group (120b). An open angle is formed between the first guide module group (120a) and the second guide module group (120b) for clamping two sides of the leading edge (1a) of the blade (1). The first guide module group (120a) and the second guide module group (120b) can roll along the span direction of the blade (1) to guide the blade maintenance tool to slide along the span direction of the blade (1).

2. The leading edge guide mechanism according to claim 1, characterized in that: Each of the guide modules (120) is swingably mounted on the guide bracket (110) to adjust an opening angle between the first guide module group (120a) and the second guide module group (120b).

3. The leading edge guide mechanism according to claim 2, characterized in that: Each of the guide modules (120) comprises a rolling element support (121) and a guide rolling element (122), wherein the guide rolling element (122) is mounted on the rolling element support (121), and the guide support (110) comprises a rolling element swing arm (111), wherein the rolling element support (121) is swingably mounted on the rolling element swing arm (111), and a first limiting element (111a) is provided on the rolling element swing arm (111), wherein the first limiting element (111a) is used to limit the swing angle of the rolling element support (121).

4. The leading edge guide mechanism according to claim 3, characterized in that: The guide bracket (110) further comprises a guide base (112), the rolling element swing arm (111) being swingably mounted on the guide base (112), and a second position limiting member (112a) being provided on the guide base (112), the second position limiting member (112a) being used to limit the swing angle of the rolling element swing arm (111).

5. The leading edge guide mechanism according to claim 3, characterized in that: Each of the guide modules (120) comprises at least two of the rolling element brackets (121), and each of the rolling element brackets (121) is provided with at least two of the guide rolling elements (122).

6. The leading edge guide mechanism according to claim 4, characterized in that: The guide bracket (110) further comprises a guide mounting frame (113), the guide base (112) is detachably mounted on the guide mounting frame (113), and the leading edge guide mechanism (100) is mounted to the blade maintenance tool (1000) via the guide mounting frame (113).

7. The leading edge guide mechanism according to claim 1, characterized in that: The at least two guide modules (120) are staggered along the span direction of the blade (1).

8. A blade repair tool, characterized in that: The blade maintenance tool (1000) comprises a leading edge guide mechanism (100) according to any one of claims 1 to 7, and the blade maintenance tool (1000) further comprises a main platform mechanism (200), wherein the leading edge guide mechanism (100) is installed above the main platform mechanism (200), and the main platform mechanism (200) comprises a main basket body (210), and the main basket body (210) comprises a main working platform (210a).

9. The blade repair tool according to claim 8, characterized in that: The main platform mechanism (200) comprises at least one pair of clamping mechanisms (220), wherein the clamping mechanisms (220) are arranged in pairs on the inner side of the main basket body (210) and are separated from each other so as to respectively clamp the pressure surface (1b) and the suction surface (1c) of the blade (1).

10. The blade repair tool according to claim 9, characterized in that: The clamping mechanism (220) comprises a retractable device (221), and the retractable device (221) can be retracted to increase or decrease the interval between the clamping mechanisms (220) arranged in pairs.

11. The blade repair tool according to claim 10, characterized in that: One side of the retractable device (221) is mounted on the main basket body (210), and the other side of the retractable device (221) is provided with a clamping rolling element (222) capable of rolling along the span direction of the blade (1).

12. The blade repair tool according to claim 9, characterized in that: The main basket body (210) comprises a first side main basket body (211), a second side main basket body (212) and a front main basket body (223) which are connected in sequence; the first side main basket body (211), the front main basket body (223) and the second side main basket body (212) are connected in sequence to form a U-shape for respectively surrounding the pressure surface (1b), the leading edge (1a) and the suction surface (1c) of the blade (1); the clamping mechanism (220) is arranged on the inner sides of the first side main basket body (211) and the second side main basket body (212).

13. The blade repair tool according to claim 12, characterized in that: The main platform mechanism (200) further comprises an anti-collision device (230), wherein the anti-collision device (230) comprises a blade anti-collision module (231) arranged on the inner side of the front main basket body (223).

14. The blade repair tool according to claim 13, characterized in that: The anti-collision device (230) further comprises a tower anti-collision module (232), and the tower anti-collision module (232) is arranged on the other side of the first side main basket body (211) and the second side main basket body (212) opposite to the side connected to the front main basket body (223).

15. The blade repair tool according to claim 9, characterized in that: The main platform mechanism (200) further comprises a lifting mechanism (240) arranged on the main basket (210), the lifting mechanism (240) being used to lift the blade repair tool (1000), the lifting mechanism (240) comprising a hoist (242) and an operating rope (244), one end of the operating rope (244) being connected to the hoist (242), and the other end of the operating rope (244) being used to connect to a nacelle of a wind turbine generator set.

16. The blade repair tool according to any one of claims 8 to 15, characterized in that: The blade repair tool (1000) further comprises an auxiliary platform mechanism (300) for providing an auxiliary working platform (310); the auxiliary platform mechanism (300) is installed below the main platform mechanism (200) and opposite to the leading edge (1a) of the blade (1).

17. The blade repair tool according to claim 16, characterized in that: The auxiliary platform mechanism (300) comprises an auxiliary platform bracket (320) and an auxiliary platform ladder (330); the auxiliary working platform (310) is laid on the lower part of the auxiliary platform bracket (320); the auxiliary platform ladder (330) is arranged on the side of the auxiliary platform bracket (320); and an openable and closable manhole (210a1) is arranged at a position of the main working platform (210a) corresponding to the auxiliary platform mechanism (300).

18. The blade repair tool according to claim 15, characterized in that: The main basket body (210) is provided with a winch (250) and / or a wind-harnessing anchor point (215) for connecting with a wind-harnessing rope (2).

19. A method for lifting a blade repair tool according to claim 18, characterized in that: The lifting method comprises: Setting the blade (1) to be repaired to point to the ground; One end of the wind-catching rope (2) is connected to the winch (250) or the wind-catching anchor point (215), and the other end of the wind-catching rope (2) is connected to the wind-catching point (3); Utilizing the hoist (242) to pull the operating rope (244) to lift the blade repair tool (1000) along the tower (4) to the height of the blade tip of the blade (1); The blade maintenance tool (1000) is translated to the tip area of ​​the blade (1) by using the working rope (244) in cooperation with the wind rope (2), so that the leading edge guide mechanism (100) is in contact with the leading edge (1a) of the blade (1), and the clamping mechanism (220) is in contact with and fixed to the web of the blade (1); The blade repair tool (1000) is lifted to a position to be repaired using the working rope (244).

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