Blade flipping device for wind turbine generator set

Abstract

The present application provides a blade flipping device for a wind turbine generator set, comprising: a blade root flipping mechanism, comprising a sling and two first slings, the sling being fixedly connected to the end surface of the blade root away from one end of the blade tip, one end of the two first slings being respectively connected to the two sides of the sling; a blade tip follower mechanism, comprising a clamping assembly, the clamping assembly being wrapped around the blade tip; the other ends of the two first slings being respectively connected to an external lifting device, one of the first slings rising under the action of the rising traction force provided by the lifting device, and the other first sling falling under the action of the falling traction force provided by the lifting device, driving the blade root to flip, and driving the blade tip and the clamping assembly to flip synchronously. The blade flipping of the present application has strong stability, high safety factor, and the flipping process is easy to control.

Description

Technical Field

[0001] The present application relates to the field of wind turbine generator sets, and in particular to a blade flipping device of a wind turbine generator set. Background Art

[0002] With the rapid development of the wind power industry, the capacity of wind power generation units has gradually increased. Wind turbine blades are one of the core components of wind turbines. To meet the needs of wind turbines in different wind farms, there are more and more types of wind turbine blades and their sizes are getting larger and larger. For large pre-bent wind turbine blades, the transportation of the blades is restricted. The technical problem of blade transportation can be solved by flipping the blades, adjusting the blade placement posture, with the blade tip facing down, and reducing the blade tip height.

[0003] Blade flipping is a key process in the blade manufacturing process. The existing flipping method uses specially designed flipping equipment to flip large wind turbine blades. Blade flipping uses blade root circle car and blade tip circle car. The blade root circle car provides the main power, and the motor drives the roller to rotate. The roller and the blade root drive the blade to rotate through friction. The blade tip circle car uses a metal swivel to support the blade tip to rotate passively through the positioning roller. This method of flipping blades relies on the blade root circle car to provide flipping power. The tip flipping of the blade generates a large torque during the flipping process due to the large friction, which is easy to cause slippage and blade surface damage, thereby causing damage to the blade flipping; the asynchronous flipping of the blade root and the blade tip will cause serious damage to the internal web of the blade, which brings great quality risks and risks. If the internal damage of the blade cannot be discovered in time, the consequences will be disastrous; the existing wind turbine blade flipping circle car has a complex structure and a large amount of equipment investment; and the height of the existing wind turbine blade flipping circle car is fixed and cannot be adjusted, resulting in different models of wind turbine blades cannot be used universally. Summary of the invention

[0004] The present application provides a blade flipping device for a wind turbine generator set.

[0005] The present application provides a blade flipping device for a wind turbine generator set, wherein the wind turbine generator set includes a blade, wherein the blade includes a blade root and a blade tip, and the blade flipping device includes:

[0006] The blade root turning mechanism comprises a sling and two first slings, wherein the sling is fixedly connected to an end surface of the blade root away from one end of the blade tip, and one end of the two first slings is respectively connected to two sides of the sling;

[0007] The blade tip follower mechanism comprises a clamping assembly, wherein the clamping assembly is wrapped around the blade tip;

[0008] Among them, the other ends of the two first slings are respectively connected to the external lifting device, one of the first slings rises under the action of the rising traction force provided by the lifting device, and the other first sling falls under the action of the falling traction force provided by the lifting device, thereby driving the blade root to flip, and driving the blade tip and the clamping assembly to flip synchronously.

[0009] Optionally, the sling is a symmetrical structure.

[0010] Optionally, the sling includes a first fixing portion and a lifting portion, the first fixing portion is fixedly connected to an end surface of the blade root portion away from one end of the blade tip portion, the lifting portion is arranged on the first fixing portion, and one end of two first slings are respectively connected to two sides of the lifting portion.

[0011] Optionally, the lifting portion includes at least one first bracket, each of the first brackets is connected to a side of the first fixing portion away from the blade root, and one end of the two first slings is respectively connected to two ends of one of the first brackets.

[0012] Optionally, the lifting portion includes two first brackets, the two first brackets are cross-arranged, and the cross position of the two first brackets is fixedly connected to a side of the first fixing portion away from the blade root.

[0013] Optionally, the sling also includes four third brackets, and the four third brackets are respectively arranged in four spaces formed by the cross-arrangement of the two first brackets, and the two ends of each third bracket are respectively connected to the corresponding positions of the two first brackets, and the four third brackets are arranged in a quadrilateral.

[0014] Optionally, both ends of each of the first brackets are provided with a first mounting hole, and the first mounting hole can be connected to one end of the corresponding first sling.

[0015] Optionally, the first fixing portion includes at least two second brackets, the at least two second brackets are arranged crosswise with each other, and the crossing positions of the at least two second brackets are the same, and the at least two second brackets are connected to form an integral structure;

[0016] Two ends of each second bracket are respectively connected to an end surface of the blade root portion away from an end of the blade tip portion.

[0017] Optionally, the lifting part includes at least one first bracket, at least one first bracket and at least two second brackets are arranged crosswise with each other, and the crossing position of at least one first bracket and at least two second brackets is the same, and at least one first bracket is connected to the overall structure formed by connecting at least two second brackets.

[0018] Optionally, the lifting portion includes two first brackets, the first fixing portion includes two second brackets, and the two second brackets and the two first brackets are arranged crosswise with each other.

[0019] Optionally, each of the second brackets is provided with a second mounting hole at both ends, and the blade root flipping mechanism also includes a first fastener for cooperating with the second mounting hole to connect the corresponding end of the second bracket to an end surface of the blade root away from the blade tip.

[0020] Optionally, the blade root turning mechanism further comprises two hooks, the two hooks are respectively connected to one end of the two first lifting belts away from the lifting device, and the hooks are used to be connected to the lifting device.

[0021] Optionally, the clamping assembly comprises a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion can be covered and matched to form a clamping space, a side of the first clamping portion facing the clamping space is matched with a suction surface of the blade tip, and a side of the second clamping portion facing the clamping space is matched with a pressure surface of the blade tip;

[0022] The clamping assembly has an open state and a clamping state; when the clamping assembly is in the open state, the first clamping portion and the second clamping portion can be separated; when the clamping assembly is in the clamping state, the first clamping portion and the second clamping portion cover and cooperate with each other, and the blade tip portion is accommodated in the clamping space.

[0023] Optionally, the clamping assembly further comprises a flexible pad, wherein the flexible pad covers an inner side wall of the clamping space, so that when the blade tip is received in the clamping space, the flexible pad wraps around the blade tip; and / or,

[0024] A second fixing portion is provided on both sides of the first clamping portion, and a third fixing portion is provided on both sides of the second clamping portion. When the first clamping portion and the second clamping portion are covered, the two second fixing portions are respectively opposite to the two third fixing portions. The clamping assembly also includes a plurality of second fasteners, which are used to fix the relative second fixing portions and the third fixing portions.

[0025] Optionally, the blade tip follower mechanism also includes a pulley and a suspension rope, the pulley is located above the clamping assembly, the suspension rope is slidably passed through the pulley, and the two ends of the suspension rope are respectively connected to the two sides of the clamping assembly, so that the clamping assembly is suspended on the pulley.

[0026] Optionally, a first lifting ring is provided on a side wall of one end of the first clamping portion away from the second clamping portion, and a second lifting ring is provided on a side wall of one end of the second clamping portion away from the first clamping portion, and the first lifting ring and the second lifting ring are respectively provided on both sides of the clamping assembly; one end of the suspension rope is connected to the first lifting ring, and the other end is connected to the second lifting ring; and / or,

[0027] The suspension rope includes a steel wire rope and two second slings. The steel wire rope is slidably passed through the pulley. One end of the two second slings is respectively fixedly connected to the two ends of the steel wire rope, and the other ends of the two second slings are respectively connected to the two sides of the clamping assembly.

[0028] Optionally, both sides of the first clamping portion and both sides of the second clamping portion are respectively provided with supporting feet;

[0029] The blade tip follower mechanism further includes a blade tip storage bracket, the blade tip storage bracket is used to place the blade tip portion and the clamping assembly, the blade tip storage bracket includes at least one group of clamping parts, and each group of the clamping parts includes two clamping grooves arranged at intervals;

[0030] When the clamping assembly is placed on the blade tip storage bracket, the supporting feet at both ends of the clamping assembly facing the blade tip storage bracket are matched with the corresponding two clamping grooves respectively.

[0031] Optionally, the supporting foot is a supporting shaft, the first clamping portion includes a first corner portion and a second corner portion, which are respectively located on both sides of an end of the first clamping portion away from the second clamping portion, the second clamping portion includes a third corner portion and a fourth corner portion, which are respectively located on both sides of an end of the second clamping portion away from the first clamping portion, the first corner portion and the third corner portion are located on one side of the clamping assembly, and the second corner portion and the fourth corner portion are located on the other side of the clamping assembly;

[0032] The six supporting feet are respectively provided with a supporting foot at the first corner and the third corner, and respectively provided with two supporting feet at the second corner and the fourth corner, wherein each supporting foot extends toward the outside of the clamping assembly, and the central axes of the supporting feet at the first corner and the second corner are both perpendicular to the overlapping direction of the first clamping portion and the second clamping portion, the central axes of the two supporting feet at the second corner are orthogonal, and the central axes of the two supporting feet at the fourth corner are orthogonal, the supporting foot close to the first corner of the two supporting feet at the second corner is collinear with the central axis of the supporting foot of the first corner, the supporting foot close to the third corner of the two supporting feet at the fourth corner is collinear with the central axis of the supporting foot of the third corner, and the supporting foot far from the first corner of the two supporting feet at the second corner is collinear with the central axis of the supporting foot far from the third corner of the two supporting feet at the fourth corner.

[0033] Optionally, the first corner, the second corner, the third corner and the fourth corner are respectively recessed to form a recessed portion, and the supporting foot of the first corner, the supporting foot of the two supporting feet of the second corner that is closer to the first corner, the supporting foot of the third corner and the supporting foot of the two supporting feet of the fourth corner that is closer to the third corner are respectively arranged in the recessed portions of the corresponding corners;

[0034] The supporting foot of the two supporting feet of the second corner portion, which is away from the first corner portion, and the supporting foot of the two supporting feet of the fourth corner portion, which is away from the third corner portion, are arranged adjacent to one side of the recessed portion of the corresponding corner portion.

[0035] Optionally, the blade root flipping mechanism further includes a blade root storage bracket, and the blade tip follower mechanism further includes a blade tip storage bracket; the blade root storage bracket is used to place the blade root portion and the hanger, and the blade tip storage bracket is used to place the blade tip portion and the clamping assembly;

[0036] During the process of turning over the blade, the hanger is separated from the blade root storage bracket, and the clamping assembly is separated from the blade tip storage bracket.

[0037] According to the technical solution provided in the embodiment of the present application, a sling and a first sling are used in conjunction with an external lifting device to realize the flipping of the blade root, and the blade tip is wrapped by a clamping assembly so that the blade tip and the clamping assembly flip synchronously with the blade root. The overall structure is simple, and a unique blade root flipping method and clamping assembly are used to ensure strong stability and a high safety factor in the blade flipping process, and the flipping process is easy to control. At the same time, when the blade root is flipped, the clamping assembly is used to protect the blade tip, thereby reducing the torque during the blade flipping process and reducing the possibility of blade damage.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] Figure 1 is a structural schematic diagram of a blade flipping device of a wind turbine generator set shown in an exemplary embodiment of the present application;

[0041] Figure 2 It is a structural schematic diagram of a sling shown in an exemplary embodiment of the present application;

[0042] Figure 3 It is a schematic diagram of the relative position relationship between a blade root flipping mechanism and a blade shown in an exemplary embodiment of the present application, and discloses a schematic diagram of flipping the blade root clockwise when the blade is at 0° (i.e. the blade is lying flat);

[0043] Figure 4 is a structural schematic diagram of a clamping assembly shown in an exemplary embodiment of the present application;

[0044] Figure 5 is a schematic diagram of the relative position relationship between a blade tip follower mechanism and a blade shown in an exemplary embodiment of the present application, revealing a schematic diagram of the blade tip flipping clockwise when the blade is at 0° (i.e. the blade is lying flat);

[0045] Figure 6 This is a schematic diagram of the relative position relationship between a blade root flipping mechanism and a blade, showing a clockwise flipping Figure 3 The cooperation relationship between the blade root turning mechanism and the blade root after the blade root is turned 90 degrees as shown;

[0046] Figure 7 is a schematic diagram of the relative position relationship between a blade tip follower mechanism and a blade, showing a clockwise flip Figure 5 The cooperation relationship between the blade tip follower mechanism and the blade tip after the blade tip is 90° as shown;

[0047] Figure 8 It is a schematic diagram of the relative position relationship between a blade root flipping mechanism and a blade shown in an exemplary embodiment of the present application, and discloses a schematic diagram of flipping the blade root clockwise when the blade is at 90° (i.e. the blade is placed upright);

[0048] Fig. 9It is a schematic diagram of the relative position relationship between a blade tip follower mechanism and a blade shown in an exemplary embodiment of the present application, and discloses a schematic diagram of the blade tip flipping clockwise when the blade is at 90° (i.e. the blade is placed upright);

[0049] Fig.10 This is a schematic diagram of the relative position relationship between a blade root flipping mechanism and a blade, showing a clockwise flipping Figure 8 The cooperation relationship between the blade root turning mechanism and the blade root after the blade root is turned 90 degrees as shown;

[0050] Fig.11 is a schematic diagram of the relative position relationship between a blade tip follower mechanism and a blade, showing a clockwise flip Fig. 9 The cooperation relationship between the blade tip follower mechanism and the blade tip after the blade tip is 90° as shown;

[0051] Fig.12 It is a matching relationship between a hanger and a blade root when a blade is placed flat on a blade root storage bracket as shown in an exemplary embodiment of the present application;

[0052] Fig.13 It is a matching relationship between a clamping assembly and a blade tip portion when a blade tip is placed flat on a blade tip storage bracket as shown in an exemplary embodiment of the present application;

[0053] Fig.14 It is a matching relationship between a hanger and a blade root when a blade is placed upright on a blade root storage bracket as shown in an exemplary embodiment of the present application;

[0054] Fig.15 An exemplary embodiment of the present application shows the matching relationship between the clamping assembly and the blade tip when the blade tip is placed upright on a blade tip storage bracket.

[0055] Reference numerals:

[0056] 100, blade root turning mechanism; 110, lifting device; 111, first fixing part; 1111, second bracket; 1112, second mounting hole; 112, lifting part; 1121, first bracket; 1122, first mounting hole; 1123, third mounting hole; 113, third bracket; 120, first lifting belt; 130, first detachable connecting member; 140, first fastener; 150, hook; 160, blade root storage bracket; 200, blade tip follower mechanism; 210, clamping assembly; 211, first clamping part; 2111, second fixing part Fixed part; 2112, first lifting ring; 212, second clamping part; 2121, third fixing part; 2122, second lifting ring; 213, clamping space; 214, flexible pad; 215, second fastener; 216, supporting foot; 220, pulley; 230, suspension rope; 231, wire rope; 232, second sling; 240, second detachable connecting part; 250, third detachable connecting part; 260, blade tip storage bracket; 261, clamping part; 2611, clamping groove; 300, blade; 310, blade root; 320, blade tip. DETAILED DESCRIPTION

[0057] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0058] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0059] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0060] The blade flipping device of the wind turbine generator set of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0061] See also Figure 1 The wind turbine generator set according to the embodiment of the present application may include a blade 300 , and the blade 300 may include a blade root portion 310 and a blade tip portion 320 .

[0062] The present application embodiment provides a blade flipping device for a wind turbine generator set, which can flip the blade 300. Figure 1 The blade flipping device of the embodiment of the present application may include a blade root flipping mechanism 100 and a blade tip follower mechanism 200, wherein the blade root flipping mechanism 100 is used to flip the blade root portion 310. When the blade root portion 310 flips, the blade tip follower mechanism 200 drives the blade tip portion 320 to flip synchronously with the blade root portion 310, that is, the flipping direction of the blade tip portion 320 is consistent with the flipping direction of the blade root portion 310, and the flipping angle of the blade tip portion 320 is also consistent with the flipping angle of the blade root portion 310.

[0063] See also Figure 2 and Figure 3 The blade root flipping mechanism 100 of the embodiment of the present application may include a hanger 110 and two first hangers 120. The hanger 110 is fixedly connected to the end surface of the blade root 310 away from the blade tip 320, and one end of the two first hangers 120 is respectively connected to the two sides of the hanger 110. The hanger 110 of the embodiment of the present application is only fixedly connected to the end surface of the blade root 310 away from the blade tip 320, which reduces the friction force on the blade root 310 when the blade 300 flips.

[0064] See also Figure 4 and Figure 5 The blade tip follower mechanism 200 may include a clamping assembly 210, wherein the clamping assembly 210 is wrapped around the blade tip portion 320, that is, the blade tip portion 320 is clamped by the clamping assembly 210. During the flipping process of the blade 300, there is no relative sliding between the clamping assembly 210 and the blade tip portion 320. The clamping assembly 210 protects the blade tip portion 320, thereby reducing the friction force on the blade tip portion 320 when the blade 300 flips.

[0065] See also Figure 3 and Figure 5 In the embodiment of the present application, the other ends of the two first slings 120 are respectively connected to the external lifting devices, one of the first slings 120 rises under the action of the ascending traction force provided by the lifting device, and the other first sling 120 descends under the action of the descending traction force provided by the lifting device, driving the blade root 310 to flip, and driving the blade tip 320 and the clamping assembly 210 to flip synchronously.

[0066] The blade flipping device of the embodiment of the present application uses a sling 110 and a first sling 120 to cooperate with an external lifting device to realize the flipping of the blade root 310, and wraps the blade tip 320 through the clamping assembly 210, so that the blade tip 320 and the clamping assembly 210 are flipped synchronously with the blade root 310. The overall structure is simple, and the unique blade root 310 flipping method and the clamping assembly 210 are used to ensure that the blade 300 has strong flipping stability and a high safety factor, and the flipping process is easy to control; at the same time, when the blade root 310 is flipped, the clamping assembly 210 protects the blade tip 320, reduces the torque during the flipping process of the blade 300, and reduces the possibility of damage to the blade 300.

[0067] In some embodiments, the hanger 110 is a symmetrical structure. Since the turning of the blade root 310 is driven by the turning of the hanger 110, the hanger 110 is designed to be a centrally symmetrical structure. After the hanger 110 is installed on the end surface of the blade root 310 away from the blade tip 320, the center of the first fixing portion 111 is directly opposite to the center of the end surface of the blade root 310 away from the blade tip 320, so that the blade root 310 can better maintain balance during the turning process of the blade 300. The hanger 110 can be an axisymmetric structure, and / or the hanger 110 can also be a centrally symmetrical structure. Figure 2 As shown, the hanger 110 is both an axisymmetric structure and a centrally symmetrical structure.

[0068] In some other embodiments, the hanger 110 may be an asymmetric structure.

[0069] See again Figure 2 and Figure 3 The sling 110 of the embodiment of the present application may include a first fixing portion 111 and a lifting portion 112. The first fixing portion 111 is fixedly connected to the end surface of the blade root portion 310 away from the blade tip portion 320. The lifting portion 112 is provided at the first fixing portion 111. One end of the two first slings 120 is respectively connected to the two sides of the lifting portion 112. The lifting portion 112 is provided at the end of the first fixing portion 111 away from the blade root portion 310 to prevent the first sling 120 from contacting the blade root portion 310 during the turning process of the blade 300, thereby causing the first sling 120 to rub against the blade root portion 310.

[0070] The lifting portion 112 may include at least one first bracket 1121. For example, in some embodiments, the lifting portion 112 includes one first bracket 1121; in other embodiments, the lifting portion 112 includes at least two first brackets 1121. Figure 2 As shown, the lifting portion 112 includes two first brackets 1121 .

[0071] In the above embodiment, each first bracket 1121 is connected to a side of the first fixing portion 111 away from the blade root portion 310, and one end of the two first slings 120 is respectively connected to the two ends of one of the first brackets 1121. For the convenience of description, the first bracket 1121 connected to the first sling 120 is referred to as a rotating bracket. That is, before turning over the blade 300, one end of the two first slings 120 is respectively connected to the two ends of the rotating bracket, so that one of the first slings 120 rises under the action of the rising traction force, and the other first sling 120 falls under the action of the falling traction force, so that one end of the rotating bracket rises and the other end falls, thereby driving the first fixing portion 111 and the blade root portion 310 to rotate synchronously.

[0072] like Figure 2 As shown, the lifting part 112 may include two first brackets 1121, the two first brackets 1121 are cross-arranged, and the cross position of the two first brackets 1121 is fixedly connected to the side of the first fixing part 111 away from the blade root 310. In other embodiments, the two first brackets 1121 are cross-arranged, and the other positions (non-cross positions) of the two first brackets 1121 are fixedly connected to the side of the first fixing part 111 away from the blade root 310. Optionally, in some embodiments, the two first brackets 1121 are orthogonal; in other embodiments, the two first brackets 1121 are non-orthogonal.

[0073] The number of first brackets 1121 and the intersection angle of two adjacent first brackets 1121 are related to the angle at which the blade 300 can be flipped, and the flipping angle of the blade 300 can be determined by the state of the first bracket 1121. Take the example that the lifting part 112 includes two first brackets 1121, and the two first brackets 1121 are orthogonal. For example, the two first brackets 1121 are respectively the first bracket A and the first bracket B. When the blade 300 is laid flat, the first bracket A is in a horizontal state (that is, the first bracket A is parallel to the horizontal plane), and the first bracket B is in an upright state (that is, the first bracket B is perpendicular to the horizontal plane). When the first bracket A rotates 90° clockwise to become an upright state, the first bracket B changes from an upright state to a horizontal state. At this time, it can be determined that the blade root 310 rotates 90° clockwise, and the blade 300 as a whole also rotates 90° clockwise. If the first bracket A continues to rotate clockwise by 90°, so that the first bracket A changes from an upright state to a horizontal state, and the first bracket B changes from a horizontal state to an upright state, at this time, compared with the flat state of the blade 300, it can be judged that the blade root 310 rotates 180° clockwise, and the blade 300 as a whole also rotates 180° clockwise.

[0074] The first bracket 1121 may be a support rod or a support plate.

[0075] See again Figure 2 and Figure 3Both ends of each first bracket 1121 include a first mounting hole 1122, and the first mounting hole 1122 can be connected to one end of the corresponding first sling 120. In the embodiment of the present application, one end of the two first slings 120 is respectively connected to the first mounting holes 1122 at both ends of one of the first brackets 1121.

[0076] Optionally, one end of each first sling 120 is detachably connected to the corresponding first mounting hole 1122, so as to facilitate replacement of the first sling 120. For example, the blade root flipping mechanism 100 further includes a first detachable connector 130, and one end of each first sling 120 is detachably connected to the first mounting hole 1122 via a first detachable connector 130. The first detachable connector 130 may include a shackle, such as the first detachable connector 130 is a shackle; of course, the first detachable connector 130 may also be other detachable connectors.

[0077] It is understandable that the first sling 120 and the first bracket 1121 may also be connected in other ways.

[0078] See also Figure 2 The sling 110 may further include four third brackets 113, which are correspondingly arranged in four spaces formed by the cross arrangement of two first brackets 1121, and the two ends of each third bracket 113 are respectively connected to the corresponding positions of the two first brackets 1121, and the four third brackets 113 are arranged in a quadrilateral, so that the strength of the two first brackets 1121 is strengthened by the third brackets 113, and the service life of the first brackets 1121 is extended. Optionally, the four first brackets 1121 are arranged in a square.

[0079] It should be understood that when the number of the first brackets 1121 is more than two, the number of the third brackets 113 will also change, and the number of the third brackets 113 is equal to the number of spaces formed by the cross arrangement of more than two first brackets 1121.

[0080] See again Figure 2 The first fixing portion 111 of the embodiment of the present application may include at least two second brackets 1111, at least two second brackets 1111 are cross-arranged with each other, and the crossing positions of at least two second brackets 1111 are the same, at least two second brackets 1111 are connected to form an integral structure, and both ends of each second bracket 1111 are respectively connected to the end surface of the blade root 310 away from the blade tip 320, so that the hanger 110 is fixedly connected to the end surface of the blade root 310 away from the blade tip 320.

[0081] The first bracket 1121 may be a support rod or a support plate.

[0082] In some embodiments, the lifting part 112 may include at least one first bracket 1121. At least one first bracket 1121 and at least two second brackets 1111 are arranged crosswise, and the cross positions of at least one first bracket 1121 and at least two second brackets 1111 are the same. At least one first bracket 1121 is connected to the overall structure formed by the connection of at least two second brackets 1111, which is beneficial to the lightweight design of the lifting device 110.

[0083] As Figure 2 shown, the lifting part 112 includes two first brackets 1121, and the first fixing part 111 includes two second brackets 1111. The two second brackets 1111 and the two first brackets 1121 are arranged crosswise. Optionally, the two first brackets 1121 are orthogonal, and the two second brackets 1111 are orthogonal. The two first brackets 1121 and the two second brackets 1111 form a structure similar to a "rice" character.

[0084] Optionally, the width of the first bracket 1121 is greater than the width of the second bracket 1111, and the strength of the first bracket 1121 is greater than that of the second bracket 1111, which is beneficial to the first bracket 1121 being used as a rotating bracket.

[0085] Referring again to Figure 2 , second mounting holes 1112 are respectively provided at both ends of each second bracket 1111. The blade root flipping mechanism 100 further includes a first fastener 140 for cooperating with the second mounting holes 1112 to connect the corresponding ends of the second brackets 1111 to the end face of the blade root part 310 away from the blade tip part 320. That is, each second mounting hole 1112 is connected to the end face of the blade root part 310 away from the blade tip part 320 through a first fastener 140. Among them, the first fastener 140 can be a bolt or other fasteners.

[0086] Optionally, in some embodiments, the second mounting holes 1112 of at least two second brackets 1111 are substantially located on the same circumference, so as to stably connect the first fixing part 111 to the end face of the blade root part 310 away from the blade tip part 320 in the same circumferential direction. In some other embodiments, the second mounting holes 1112 of at least two second brackets 1111 may also be at least partially not on the same circumference.

[0087] Multiple second mounting holes 1112 as described above may be respectively provided at both ends of each second bracket 1111. The multiple second mounting holes 1112 located at the same end of the same second bracket 1111 are evenly spaced to stably connect the first fixing part 111 to the end face of the blade root part 310 away from the blade tip part 320.

[0088] Referring again to Figure 2A third mounting hole 1123 is also provided at both ends of each first bracket 1121, and each third mounting hole 1123 is connected to the end surface of the blade root 310 away from the blade tip 320 through a first fastener 140, thereby fixing the first bracket 1121 on the end surface of the blade root 310 away from the blade tip 320.

[0089] The first mounting hole 1122 at the same end of the same first bracket 1121 is arranged closer to the edge of the corresponding end, so as to facilitate the connection of the first sling 120. Optionally, each first bracket 1121 has protrusions at both ends, the first mounting hole 1122 is arranged on the protrusions, and the third mounting hole 1123 is arranged on the first bracket 1121 near the protrusions.

[0090] The second mounting hole 1112 of the second bracket 1111 and the third mounting hole 1123 of the first bracket 1121 may be located substantially on the same circumference, so as to conveniently and simply fix the second bracket 1111 and the first bracket 1121 on the end surface of the blade root 310 away from the blade tip 320 .

[0091] A plurality of the third mounting holes 1123 may be respectively provided at both ends of each first bracket 1121, and the plurality of third mounting holes 1123 located at the same end of the same first bracket 1121 are evenly spaced to stably connect the lifting portion 112 to the end surface of the blade root portion 310 away from the blade tip portion 320.

[0092] Of course, the connection method between the first bracket 1121 and the end surface of the blade root 310 away from the blade tip 320 and the second bracket 1111 and the end surface of the blade root 310 away from the blade tip 320 is not limited to the matching method of the above-mentioned fasteners and mounting holes, and can also be designed as others.

[0093] When the first bracket 1121 is connected to the end surface of the blade root portion 310 away from the blade tip portion 320 , the first bracket 1121 may be connected to the second bracket 1111 or not.

[0094] One end of each first sling 120 away from the lifting portion 112 can be tied to the lifting device or hung on the lifting device. For example, the blade root turning mechanism 100 can also include two hooks 150, which are respectively connected to one end of the two first slings 120 away from the lifting portion 112, and the hooks 150 are used to connect to the lifting device.

[0095] The lifting device may include two cranes, which are parked on both sides of the blade root 310, one of which is connected to one end of one of the first lifting belts 120 away from the lifting device 110, and the other crane is connected to one end of another first lifting belt 120 away from the lifting device 110. When turning over the blade 300, one of the cranes provides a lifting traction force, and the other crane provides a descending traction force. In some other embodiments, the lifting device is other lifting devices.

[0096] During the process of turning over the blade 300 , the first sling 120 will not contact the end surface of the blade root portion 310 away from the blade tip portion 320 , and therefore, the first sling 120 will not cause wear to the blade root portion 310 .

[0097] In addition, the material of the first sling 120 can be a flexible material. In this way, during the flipping process of the blade 300, even if the first sling 120 hits the end surface of the blade root 310 away from the blade tip 320, it will not cause large friction to the blade root 310; at the same time, the flexible first sling 120 also facilitates the connection between the first sling 120 and the sling 110.

[0098] See also Figure 4 and Figure 5 The clamping assembly 210 may include a first clamping portion 211 and a second clamping portion 212. The first clamping portion 211 and the second clamping portion 212 can cover and cooperate with each other to form a clamping space 213. The side of the first clamping portion 211 facing the clamping space 213 is adapted to the suction surface (i.e., SS surface) of the blade tip 320, and the side of the second clamping portion 212 facing the clamping space 213 is adapted to the pressure surface (i.e., PS surface) of the blade tip 320. The clamping assembly 210 of the embodiment of the present application may include an open state and a clamping state. When the clamping assembly 210 is in the open state, the first clamping portion 211 and the second clamping portion 212 can be separated; when the clamping assembly 210 is in the clamping state, the first clamping portion 211 and the second clamping portion 212 cover and cooperate with each other, and the blade tip 320 is accommodated in the clamping space 213. The clamping assembly 210 can be in the clamping state as shown in FIG. Figure 5 . By accommodating the blade tip 320 in the clamping space 213, there is no external friction on the blade tip 320 during the flipping of the blade 300, which reduces the torque during the flipping of the blade 300 and reduces the possibility of damage to the blade 300. Furthermore, by replacing the first clamping portion 211 and the second clamping portion 212, the clamping assembly 210 can be used to clamp the blade tips of blades 300 of different models, has strong versatility, can greatly reduce the demand for various types of blade 300 flipping equipment, save costs, and has economic applicability.

[0099] Optionally, the clamping assembly 210 wraps around the hanging point of the blade tip 320 to ensure that the flipping process of the blade 300 is safer and more reliable.

[0100] See also Figure 4 The clamping assembly 210 of the embodiment of the present application may further include a flexible pad 214, which covers the inner wall of the clamping space 213, so that when the blade tip 320 is accommodated in the clamping space 213, the flexible pad 214 is wrapped around the blade tip 320. The flexible pad 214 protects the blade tip 320, prevents the surface of the clamping position of the blade tip 320 from being worn, and makes the turning process of the blade 300 safer and more reliable. The flexible pad 214 can be made of sponge material or other flexible materials.

[0101] To achieve locking of the first clamping portion 211 and the second clamping portion 212, optionally, see Figure 4 and Figure 5 The first clamping portion 211 is provided with a second fixing portion 2111 on both sides, and the second clamping portion 212 is provided with a third fixing portion 2121 on both sides. When the first clamping portion 211 and the second clamping portion 212 are covered, the two second fixing portions 2111 are respectively opposite to the two third fixing portions 2121; the clamping assembly 210 also includes a plurality of second fasteners 215, which are used to fix the relative second fixing portions 2111 and the third fixing portions 2121 to be connected.

[0102] The second fixing portion 2111 and the third fixing portion 2121 may be provided with mounting holes, respectively, and the second fixing portion 2111 and the third fixing portion 2121 may be locked by the cooperation between the second fasteners 215 and the mounting holes. Optionally, each second fixing portion 2111 and each third fixing portion 2121 may be provided with two mounting holes, so that the two sides of the first clamping portion 211 and the second clamping portion 212 may be fixed by four second fasteners 215, respectively, to lock the first clamping portion 211 and the second clamping portion 212.

[0103] The second fastener 215 may be a bolt or other fasteners.

[0104] The process of clamping the blade tip portion 320 by the clamping assembly 210 may include:

[0105] 1. Place the SS surface of the blade tip 320 in the receiving portion of the first clamping portion 211 facing the clamping space 213;

[0106] 2. Buckle the second clamping portion 212 onto the first clamping portion 211;

[0107] 3. Tighten the second fixing portion 2111 and the third fixing portion 2121 by means of bolts.

[0108] It should be understood that the locking method of the first clamping portion 211 and the second clamping portion 212 is not limited to the locking method in the above embodiment, and may also be designed as other locking methods.

[0109] In addition, in order to facilitate the buckling of the second clamping portion 212 onto the first clamping portion 211, a holding space is provided on one side of the connection between the first clamping portion 211 and the second clamping portion 212, and the holding space is communicated with the clamping space 213, as shown in FIG. Figure 5 As shown, the trailing edge of the blade 300 is received in the holding space.

[0110] See also Figure 5 In some embodiments, the blade tip follower mechanism 200 of the embodiment of the present application may further include a pulley 220 and a suspension rope 230, wherein the pulley 220 is located above the clamping assembly 210, and the suspension rope 230 is slidably passed through the pulley 220. In addition, the two ends of the suspension rope 230 are respectively connected to the two sides of the clamping assembly 210, so that the clamping assembly 210 is suspended from the pulley 220. When the blade root 310 flips, the suspension rope 230 is driven to slide relative to the pulley 220, thereby driving the clamping assembly 210 and the blade tip 320 to flip synchronously. Through the cooperation of the pulley 220 and the suspension rope 230, the clamping assembly 210 and the blade tip 320 can follow the flipping of the blade root 310 more smoothly.

[0111] To achieve the connection between the suspension rope 230 and the clamping assembly 210, see Figure 5 A first hanging ring 2112 is provided on the side wall of one end of the first clamping portion 211 away from the second clamping portion 212, and a second hanging ring 2122 is provided on the side wall of one end of the second clamping portion 212 away from the first clamping portion 211. The first hanging ring 2112 and the second hanging ring 2122 are respectively provided on both sides of the clamping assembly 210. One end of the suspension rope 230 is connected to the first hanging ring 2112, and the other end is connected to the second hanging ring 2122. The positions of the first hanging ring 2112 and the second hanging ring 2122 are arranged so that the clamping assembly 210 can more easily maintain balance during the process of flipping the blade 300.

[0112] The first hanging ring 2112 and the second hanging ring 2122 can be D-shaped hanging rings or hanging rings of other shapes.

[0113] The first hanging ring 2112 is welded to the side wall of one end of the first clamping part 211 away from the second clamping part 212, and the second hanging ring 2122 is welded to the side wall of one end of the second clamping part 212 away from the first clamping part 211; of course, the first hanging ring 2112 and the second hanging ring 2122 can also be fixed to the first clamping part 211 and the second clamping part 212 in other ways.

[0114] One end of the suspension rope 230 can be tied to the first suspension ring 2112 and the second suspension ring 2122, or one end of the suspension rope 230 can be connected to the first suspension ring 2112 and the second suspension ring 2122 through an external structure. Exemplarily, the blade tip follower mechanism 200 can also include two second detachable connectors 240, one end of the suspension rope 230 is detachably connected to the first suspension ring 2112 through one of the second detachable connectors 240, and the other end is detachably connected to the second suspension ring 2122 through another second detachable connector 240, so as to facilitate the replacement of the suspension rope 230. The second detachable connector 240 can include a shackle; of course, the second detachable connector 240 can also be other detachable connectors.

[0115] It is understandable that the suspension rope 230 and the clamping assembly 210 may also be connected in other ways.

[0116] In some embodiments, the suspension rope 230 is a sling, that is, the suspension rope 230 is a flexible sling.

[0117] In some other embodiments, in order to improve the service life of the suspension rope 230 and ensure that the suspension rope 230 can be conveniently connected to the clamping assembly 210, see Figure 5 The suspension rope 230 may include a steel wire rope 231 and two second slings 232. The steel wire rope 231 is slidably passed through the pulley 220. One end of the two second slings 232 is respectively fixedly connected to the two ends of the steel wire rope 231, and the other ends of the two second slings 232 are respectively connected to the two sides of the clamping assembly 210. In the process of flipping the blade 300, the steel wire rope 231 and the pulley 220 are always ensured to slide relative to each other, so as to achieve the purpose of flipping the blade tip 320.

[0118] It should be understood that the steel wire rope 231 may also be replaced with other wear-resistant rope structures.

[0119] The second sling 232 may be made of a flexible material to facilitate the connection between the second sling 232 and the clamping assembly 210 .

[0120] See also Figure 5 The blade tip follower mechanism 200 of the embodiment of the present application may further include two third detachable connectors 250, and pressure rings are respectively provided at both ends of the wire rope 231, and one end of each second sling 232 is detachably connected to the corresponding pressure ring through a third detachable connector 250. The third detachable connector 250 includes a shackle; of course, the third detachable connector 250 may also be other detachable connectors.

[0121] It should be understood that the connection method between the steel wire rope 231 and the second sling 232 is not limited thereto, and other connection methods may also be designed.

[0122] The pulley 220 may be suspended on a fixed platform or on a crane. For example, a crane is parked on one side of the blade tip 320, and the pulley 220 is suspended on a hook of the crane, so that the height of the clamping assembly 210 can be controlled by the crane. It should be noted that during the process of turning over the blade 300, the position of the hook of the crane suspending the pulley 220 may not change.

[0123] Figure 3 FIG. 1 is a schematic diagram of the relative positions of the blade root turning mechanism 100 and the blade 300 when the blade 300 is in the initial state (i.e. the blade 300 is laid flat). Figure 5 Schematic diagram of the relative position relationship between the blade tip follower mechanism 200 and the blade 300 when the blade 300 is in the initial state. Next, the process of the blade 300 rotating 90° and 180° clockwise from the initial state is described.

[0124] like Figure 3 As shown, the lifting device is provided to Figure 3 The first lifting belt 120 on the left side of the lifting device 110 increases the traction force and provides it to the lifting device through the lifting device. Figure 3 The first sling 120 located on the right side of the sling 110 reduces the traction force, so that Figure 3 The first sling 120 located on the left side of the sling 110 rises. Figure 3 The first sling 120 located on the right side of the sling 110 is lowered, so that the sling 110 rotates clockwise, and the blade root 310 rotates synchronously with the sling 110. The blade root 310 drives the blade tip 320 and the clamping assembly 210 to rotate synchronously, as shown in FIG. Figure 5 shown.

[0125] When the spreader 110 is Figure 3 After the position shown is rotated 90° clockwise, the relationship between the blade 300 and the blade root turning mechanism 100 and the blade tip following mechanism 200 is as follows: Figure 6 and Figure 7 As shown, at this time, the blade 300 rotates 90° clockwise relative to the initial state.

[0126] Next, the two first slings 120 are removed from the first bracket 1121 currently connected to the first slings 120, and one end of the two first slings 120 is connected to the two ends of another first bracket 1121, respectively. Figure 8 At this time, the lifting device is provided to Figure 8 The first lifting belt 120 on the left side of the lifting device 110 increases the traction force and provides it to the lifting device through the lifting device. Figure 8 The first sling 120 located on the right side of the sling 110 reduces the traction force, so that Figure 8 The first sling 120 located on the left side of the sling 110 rises. Figure 8The first sling 120 located on the right side of the sling 110 is lowered, so that the sling 110 rotates clockwise, and the blade root 310 rotates synchronously with the sling 110. The blade root 310 drives the blade tip 320 and the clamping assembly 210 to rotate synchronously, as shown in FIG. Fig. 9 shown.

[0127] When the spreader 110 is Figure 8 After the position shown is rotated 90° clockwise, the relationship between the blade 300 and the blade root turning mechanism 100 and the blade tip following mechanism 200 is as follows: Fig.10 and Fig.11 As shown, at this time, the blade 300 rotates 180° clockwise relative to the initial state.

[0128] The manner of flipping the blade 300 to other angles is similar and will not be described in detail.

[0129] In addition, in some other embodiments, the clamping assembly 210 can be placed directly on a support platform, such as a horizontal support platform, and the clamping assembly 210 can be a cylindrical structure. When flipping, the cylindrical clamping assembly 210 rolls on the horizontal plane of the horizontal support platform, and will not cause large vibrations to the flipping of the clamping assembly 210 and the blade tip 320, thereby achieving a smooth flipping of the clamping assembly 210 and the blade tip 320 following the blade root 310.

[0130] See also Fig.12 and Fig.13 The blade root flipping mechanism 100 of the embodiment of the present application may further include a blade root storage bracket 160, and the blade tip follower mechanism 200 may further include a blade tip storage bracket 260. The blade root storage bracket 160 can be used to place the blade root portion 310 and the hanger 110, and the blade tip storage bracket 260 can be used to place the blade tip portion 320 and the clamping assembly 210. In the embodiment of the present application, during the process of flipping the blade 300, the hanger 110 is separated from the blade root storage bracket 160, and the clamping assembly 210 is separated from the blade tip storage bracket 260.

[0131] like Fig.12 and Fig.13As shown, when the blade 300 is in the initial state, the blade root 310 and the blade tip 320 of the blade 300 are placed on the blade root storage bracket 160 and the blade tip storage bracket 260 respectively; in the process of flipping the blade 300, the blade root flipping mechanism 100 and the blade tip follower mechanism 200 are lifted by a crane, so that the lifting device 110 is separated from the blade root storage bracket 160, and the clamping assembly 210 is separated from the blade tip storage bracket 260, so that the blade 300 is separated from the blade root storage bracket 160 and the blade tip storage bracket 260. After the blade 300 is flipped clockwise 90 degrees from the initial state in the air, the blade root 310 and the blade tip 320 of the blade 300 can be placed on the blade root storage bracket 160 and the blade tip storage bracket 260 respectively again, as shown in FIG. Fig.14 and 15 shown.

[0132] See also Figure 4 Support feet 216 may be respectively provided on both sides of the first clamping portion 211 and both sides of the second clamping portion 212. Optionally, support feet 216 may be respectively welded on both sides of the first clamping portion 211 and both sides of the second clamping portion 212. It should be understood that the support feet 216 may also be set at corresponding positions of the first clamping portion 211 and the second clamping portion 212 in other ways.

[0133] See also Fig.13 and Fig.15 The blade tip storage bracket 260 may include at least one set of clamping parts 261, and each set of clamping parts 261 includes two clamping grooves 2611 arranged at intervals. When the clamping assembly 210 is placed on the blade tip storage bracket 260, the supporting feet 216 at both ends of the clamping assembly 210 facing the blade tip storage bracket 260 are respectively matched with the corresponding two clamping grooves 2611.

[0134] In the embodiment of the present application, the clamping assembly 210 is roughly rectangular. Therefore, the spacing between the support feet 216 at both ends of the long side of the clamping assembly 210 is not equal to the spacing between the support feet 216 at both ends of the short side of the clamping assembly 210. In order to adapt the support feet 216 at both ends of the long side of the clamping assembly 210 and the support feet 216 at both ends of the short side of the clamping assembly 210, the spacing between the two card grooves 2611 of different groups of card parts 261 is also not equal.

[0135] like Fig.13 As shown, when the long side of the clamping assembly 210 is placed on the blade tip storage bracket 260, the two supporting legs 216 at both ends of the long side of the clamping assembly 210 are clamped by the clamping portion 261 with a larger spacing between the two clamping grooves 2611; Fig.15 As shown, when the short side of the clamping assembly 210 is placed on the blade tip storage bracket 260 , the two supporting legs 216 at both ends of the short side of the clamping assembly 210 are clamped by the clamping portion 261 with a smaller spacing between the two clamping grooves 2611 .

[0136] The support leg 216 may be a support shaft, such as a cylindrical support shaft, which has a simple structure and is convenient for matching with the slot 2611. In other embodiments, the support leg 216 may also be other structures.

[0137] Next, the structure of the clamping assembly 210 is further described by taking the supporting foot 216 as the supporting shaft as an example.

[0138] The first clamping portion 211 may include a first corner portion and a second corner portion, which are respectively located on both sides of an end of the first clamping portion 211 away from the second clamping portion 212. The second clamping portion 212 may include a third corner portion and a fourth corner portion, which may be respectively located on both sides of an end of the second clamping portion 212 away from the first clamping portion 211. The first corner portion and the third corner portion are located on one side of the clamping assembly 210, and the second corner portion and the fourth corner portion are located on the other side of the clamping assembly 210.

[0139] The supporting legs 216 of the embodiment of the present application may include six, one supporting leg 216 is provided at the first corner and the third corner respectively, and two supporting legs 216 are provided at the second corner and the fourth corner respectively, wherein each supporting leg 216 extends toward the outside of the clamping assembly 210 (i.e., in a direction away from the center of the clamping assembly 210), and the central axes of the supporting legs 216 at the first corner and the second corner are perpendicular to the covering direction of the first clamping portion 211 and the second clamping portion 212, and the central axes of the two supporting legs 216 at the second corner are orthogonal to each other. The central axes of the two supporting feet 216 at the fourth corner are orthogonal, the central axes of the supporting foot 216 close to the first corner among the two supporting feet 216 at the second corner are collinear with the central axes of the supporting foot 216 at the first corner, the central axes of the supporting foot 216 close to the third corner among the two supporting feet 216 at the fourth corner are collinear with the central axes of the supporting foot 216 at the third corner, and the central axes of the supporting foot 216 far from the first corner among the two supporting feet 216 at the second corner are collinear with the supporting foot 216 far from the third corner among the two supporting feet 216 at the fourth corner.

[0140] In some embodiments, the first corner, the second corner, the third corner and the fourth corner are respectively recessed to form recessed portions, and the supporting foot 216 at the first corner, the supporting foot 216 of the two supporting feet 216 at the second corner close to the first corner, the supporting foot 216 at the third corner and the supporting foot 216 of the two supporting feet 216 at the fourth corner close to the third corner are respectively arranged in the recessed portions of the corresponding corners, and the supporting foot 216 of the two supporting feet 216 at the second corner far away from the first corner and the supporting foot 216 of the two supporting feet 216 at the fourth corner far away from the third corner are arranged on one side of the recessed portion of the corresponding corner. By setting the recessed portion, the miniaturized design of the clamping assembly 210 is facilitated.

[0141] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A blade flipping device for a wind turbine generator set, wherein: The wind turbine generator set comprises a blade (300), wherein the blade (300) comprises a blade root portion (310) and a blade tip portion (320), and is characterized in that the blade flipping device comprises: A blade root flipping mechanism (100) comprises a sling (110) and two first slings (120), wherein the sling (110) comprises a first fixing portion (111), the first fixing portion (111) comprises at least two second brackets (1111), at least two second brackets (1111) are arranged crosswise with each other, and the crossing positions of at least two second brackets (1111) are the same, at least two second brackets (1111) are connected to form an integral structure, two ends of each second bracket (1111) are respectively fixedly connected to an end surface of the blade root portion (310) away from the blade tip portion (320), and one end of the two first slings (120) are respectively connected to two sides of the sling (110); A blade tip follower mechanism (200) comprises a clamping assembly (210), wherein the clamping assembly (210) is wrapped around the blade tip portion (320); The other ends of the two first slings (120) are respectively connected to an external lifting device, and one of the first slings (120) rises under the action of the rising traction force provided by the lifting device, while the other first sling (120) falls under the action of the falling traction force provided by the lifting device, thereby driving the blade root (310) to flip, and the blade tip (320) and the clamping assembly (210) to flip synchronously.

2. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: The hanger (110) is a symmetrical structure.

3. The blade flipping device of a wind turbine generator set according to claim 1 or 2, characterized in that: The sling (110) further comprises a slinging portion (112), wherein the slinging portion (112) is arranged on the first fixing portion (111), and one end of the two first slings (120) are respectively connected to two sides of the slinging portion (112).

4. The blade flipping device of a wind turbine generator set according to claim 3, characterized in that: The lifting portion (112) comprises at least one first bracket (1121), each of the first brackets (1121) being connected to a side of the first fixing portion (111) away from the blade root portion (310), and one end of two first slings (120) being respectively connected to two ends of one of the first brackets (1121).

5. The blade flipping device of a wind turbine generator set according to claim 4, characterized in that: The lifting portion (112) comprises two first brackets (1121), the two first brackets (1121) are cross-arranged, and the cross position of the two first brackets (1121) is fixedly connected to a side of the first fixing portion (111) away from the blade root portion (310).

6. The blade flipping device of a wind turbine generator set according to claim 5, characterized in that: The sling (110) further comprises four third brackets (113), wherein the four third brackets (113) are respectively arranged in four spaces formed by the cross arrangement of two first brackets (1121), and the two ends of each third bracket (113) are respectively connected to the corresponding positions of the two first brackets (1121), and the four third brackets (113) are arranged in a quadrilateral.

7. The blade flipping device of a wind turbine generator set according to claim 4, characterized in that: Both ends of each first bracket (1121) are provided with a first mounting hole (1122), and the first mounting hole (1122) can be connected to one end of the corresponding first sling (120).

8. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: The lifting portion (112) comprises at least one first bracket (1121), the at least one first bracket (1121) and at least two second brackets (1111) are arranged crosswise with each other, and the crossing position of at least one first bracket (1121) and at least two second brackets (1111) is the same, and at least one first bracket (1121) is connected to an integral structure formed by connecting at least two second brackets (1111).

9. The blade flipping device of a wind turbine generator set according to claim 8, characterized in that: The lifting portion (112) comprises two first brackets (1121), the first fixing portion (111) comprises two second brackets (1111), and the two second brackets (1111) and the two first brackets (1121) are arranged crosswise with each other.

10. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: Both ends of each second bracket (1111) are provided with a second mounting hole (1112), and the blade root flipping mechanism (100) further comprises a first fastener (140) for cooperating with the second mounting hole (1112) to connect the corresponding end of the second bracket (1111) to an end surface of the blade root portion (310) away from the blade tip portion (320).

11. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: The blade root turning mechanism (100) further comprises two hooks (150), wherein the two hooks (150) are respectively connected to one end of the two first slings (120) away from the sling (110), and the hooks (150) are used to be connected to the lifting device.

12. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: The clamping assembly (210) comprises a first clamping portion (211) and a second clamping portion (212); the first clamping portion (211) and the second clamping portion (212) can be covered and matched to form a clamping space (213); a side of the first clamping portion (211) facing the clamping space (213) is matched with a suction surface of the blade tip (320); and a side of the second clamping portion (212) facing the clamping space (213) is matched with a pressure surface of the blade tip (320); The clamping assembly (210) has an open state and a clamping state; when the clamping assembly (210) is in the open state, the first clamping portion (211) and the second clamping portion (212) can be separated; when the clamping assembly (210) is in the clamping state, the first clamping portion (211) and the second clamping portion (212) are covered and matched, and the blade tip portion (320) is accommodated in the clamping space (213).

13. The blade flipping device of a wind turbine generator set according to claim 12, characterized in that: The clamping assembly (210) further comprises a flexible pad (214), wherein the flexible pad (214) covers an inner side wall of the clamping space (213), so that when the blade tip (320) is received in the clamping space (213), the flexible pad (214) wraps around the blade tip (320); and / or, The first clamping portion (211) is provided with a second fixing portion (2111) on both sides, and the second clamping portion (212) is provided with a third fixing portion (2121) on both sides. When the first clamping portion (211) and the second clamping portion (212) are covered, the two second fixing portions (2111) and the two third fixing portions (2121) are respectively opposite to each other. The clamping assembly (210) further comprises a plurality of second fasteners (215), and the second fasteners (215) are used for fixing and connecting the second fixing portions (2111) and the third fixing portions (2121) opposite to each other.

14. The blade flipping device of a wind turbine generator set according to claim 12, characterized in that: The blade tip follower mechanism (200) further comprises a pulley (220) and a suspension rope (230), wherein the pulley (220) is located above the clamping assembly (210), the suspension rope (230) is slidably passed through the pulley (220), and two ends of the suspension rope (230) are respectively connected to two sides of the clamping assembly (210), so that the clamping assembly (210) is suspended on the pulley (220).

15. The blade flipping device of a wind turbine generator set according to claim 14, characterized in that: A first hanging ring (2112) is provided on a side wall of one end of the first clamping portion (211) away from the second clamping portion (212), and a second hanging ring (2122) is provided on a side wall of one end of the second clamping portion (212) away from the first clamping portion (211), and the first hanging ring (2112) and the second hanging ring (2122) are respectively provided on two sides of the clamping assembly (210); one end of the suspension rope (230) is connected to the first hanging ring (2112), and the other end is connected to the second hanging ring (2122); and / or, The suspension rope (230) comprises a steel wire rope (231) and two second slings (232), the steel wire rope (231) is slidably passed through the pulley (220), one end of the two second slings (232) are respectively fixedly connected to the two ends of the steel wire rope (231), and the other ends of the two second slings (232) are respectively connected to the two sides of the clamping assembly (210).

16. The blade flipping device of a wind turbine generator set according to claim 12, characterized in that: Support legs (216) are respectively provided on both sides of the first clamping portion (211) and on both sides of the second clamping portion (212); The blade tip follower mechanism (200) further comprises a blade tip storage bracket (260), wherein the blade tip storage bracket (260) is used to store the blade tip portion (320) and the clamping assembly (210), and the blade tip storage bracket (260) comprises at least one group of clamping portions (261), and each group of the clamping portions (261) comprises two clamping grooves (2611) arranged at intervals. When the clamping assembly (210) is placed on the blade tip storage bracket (260), the supporting feet (216) at both ends of the clamping assembly (210) facing the blade tip storage bracket (260) respectively cooperate with the corresponding two clamping slots (2611).

17. The blade flipping device of a wind turbine generator set according to claim 16, characterized in that: The supporting foot (216) is a supporting shaft, the first clamping portion (211) comprises a first corner portion and a second corner portion, which are respectively located on both sides of an end of the first clamping portion (211) away from the second clamping portion (212), the second clamping portion (212) comprises a third corner portion and a fourth corner portion, which are respectively located on both sides of an end of the second clamping portion (212) away from the first clamping portion (211), the first corner portion and the third corner portion are located on one side of the clamping assembly (210), and the second corner portion and the fourth corner portion are located on the other side of the clamping assembly (210); The supporting legs (216) include six supporting legs (216), wherein the first corner and the third corner are respectively provided with a supporting leg (216), and the second corner and the fourth corner are respectively provided with two supporting legs (216), wherein each supporting leg (216) extends toward the outside of the clamping assembly (210), and the central axes of the supporting legs (216) of the first corner and the second corner are both perpendicular to the covering direction of the first clamping portion (211) and the second clamping portion (212), the central axes of the two supporting legs (216) of the second corner are orthogonal, and the central axes of the two supporting legs (216) of the fourth corner are orthogonal. 16), the central axes of the two supporting feet (216) of the second corner that is closer to the first corner are collinear with the central axes of the supporting foot (216) of the first corner, the central axes of the two supporting feet (216) of the fourth corner that is closer to the third corner are collinear with the central axes of the supporting foot (216) of the third corner, and the central axes of the two supporting feet (216) of the second corner that is farther from the first corner are collinear with the central axes of the two supporting feet (216) of the fourth corner that is farther from the third corner.

18. The blade flipping device of a wind turbine generator set according to claim 17, characterized in that: The first corner, the second corner, the third corner and the fourth corner are respectively recessed to form recessed portions, and the supporting foot (216) of the first corner, the supporting foot (216) of the two supporting feet (216) of the second corner that is close to the first corner, the supporting foot (216) of the third corner and the supporting foot (216) of the two supporting feet (216) of the fourth corner that is close to the third corner are respectively arranged in the recessed portions of the corresponding corners; The supporting foot (216) of the two supporting feet (216) of the second corner, which is away from the first corner, and the supporting foot (216) of the two supporting feet (216) of the fourth corner, which is away from the third corner, are arranged adjacent to one side of the recessed portion of the corresponding corner.

19. The blade flipping device of a wind turbine generator set according to claim 1, characterized in that: The blade root flipping mechanism (100) further comprises a blade root storage bracket (160), and the blade tip follower mechanism (200) further comprises a blade tip storage bracket (260); the blade root storage bracket (160) is used to place the blade root portion (310) and the hanger (110), and the blade tip storage bracket (260) is used to place the blade tip portion (320) and the clamping assembly (210); During the process of turning over the blade (300), the hanger (110) is separated from the blade root storage bracket (160), and the clamping assembly (210) is separated from the blade tip storage bracket (260).

Images