Magnetic attraction device, limiting device, tower drum and wind turbine generator set

Abstract

This application relates to a magnetic suction device, a limiting device, a tower, and a wind turbine generator set. The magnetic suction device includes a base with a first side and a second side disposed opposite to each other; a magnetic suction member disposed on the first side of the base and connected to the base; and a connecting member disposed on the base, the connecting member at least partially protruding from the second side of the base by a predetermined length for connecting an additional component, enabling the additional component to maintain a predetermined distance from the base. The magnetic suction device, limiting device, tower, and wind turbine generator set provided by this application can effectively and reliably connect the support frame and the tower, reduce tower strength redundancy, facilitate tower weight reduction, and improve tower economy.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to a magnetic attraction device, a limiting device, a tower, and a wind turbine generator set. Background Technology

[0002] The tower is a crucial component of a wind turbine, supporting the generator and wind turbine blades. The tower's interior typically houses numerous cables used to transmit electrical energy, enabling the wind turbine to operate. These cables extend axially along the tower; however, vibrations from the wind turbine can cause them to sway, affecting the turbine's operational stability and safety. Therefore, supports are usually installed to secure the cables.

[0003] Supports are usually welded to the tower, but welding can damage the tower and reduce the strength of the welded area. Therefore, in order to improve the welding reliability of each support, the thickness of the tower needs to be increased accordingly, resulting in a lot of strength redundancy, limiting the weight reduction of the tower and resulting in low tower economy. Utility Model Content

[0004] This application provides a magnetic suction device, a limiting device, a tower, and a wind turbine generator set, which can effectively and reliably connect the support frame and the tower, reduce the redundancy of tower strength, and help to reduce the weight of the tower and improve its economy.

[0005] In a first aspect, embodiments of this application provide a magnetic attraction device, wherein the magnetic attraction device includes a base having a first side and a second side disposed opposite to each other; a magnetic attraction member disposed on the first side of the base and connected to the base; and a connector disposed on the base, the connector at least partially protruding from the second side of the base by a predetermined length for connecting an additional member, thereby enabling the additional member to maintain a predetermined distance from the base.

[0006] According to one aspect of the embodiments of this application, the connector includes a first portion and a second portion that are interconnected. The first portion is disposed on a first side of the base, and the second portion extends through the base from the first side of the base and protrudes beyond the second side by a predetermined length. The portion of the second portion protruding beyond the second side forms a first connecting portion.

[0007] According to one aspect of the present application, a groove is provided on the first side of the base, and the magnetic attractor and the first part are embedded and fixed in the groove.

[0008] According to one aspect of the embodiments of this application, there are two magnetic suction members, which are spaced apart, and the first part is clamped and fixed between the two magnetic suction members.

[0009] According to one aspect of the present application, the base is provided with a mounting hole, the mounting hole penetrating a first side surface and a second side surface of the base; along the penetrating direction of the mounting hole, the projection of the mounting hole falls into the projection of the first part.

[0010] Secondly, embodiments of this application provide a magnetic attraction device, which includes a base having a first side and a second side disposed opposite to each other; a magnetic attraction member disposed on the first side of the base and connected to the base; and a connector disposed on the base for connecting an additional member and such that the additional member is located on the second side of the base. The connector is provided with an adjustment structure, which enables the position of the additional member relative to the base to change.

[0011] According to one aspect of the present application, the connector is disposed on the base, and the connector protrudes at least partially from a second side of the base by a predetermined length. The adjustment structure includes a through hole formed in the connector. The connector is connected to the additional member via a through member, the through member being insertable into the through hole and having a degree of freedom in the radial direction of the through hole.

[0012] According to one aspect of the embodiments of this application, the connector has a plate-like structure, and / or the through hole is an arc-shaped hole or an oblong hole.

[0013] According to one aspect of the present application, the magnetic attraction device further includes a protective sleeve that covers the base and the magnetic attraction element.

[0014] Thirdly, embodiments of this application provide a limiting device, wherein the limiting device includes an additional component, the additional component including a bracket; as described in the first aspect, the bracket has a second connecting portion, and the connecting member of the magnetic attraction device is detachably connected to the second connecting portion.

[0015] According to one aspect of the embodiments of this application, the connector and the second connecting portion have relative degrees of freedom.

[0016] Fourthly, embodiments of this application disclose a tower, wherein the tower includes a magnetic attraction device as described in the first aspect, a magnetic attraction device as described in the second aspect, or a limiting device as described in the third aspect.

[0017] According to one aspect of the embodiments of this application, the tower includes a cylinder; a cable disposed inside the cylinder and extending along the axial direction of the cylinder; a limiting device as described in the second aspect, connected to the cylinder, wherein the bracket of the limiting device is provided with a cable clamp, the cable is connected to the cable clamp, and the limiting device is fixed to the inner wall of the cylinder.

[0018] Fifthly, embodiments of this application also provide a wind turbine generator set, wherein the wind turbine generator set includes a tower as described in the third or fourth aspect.

[0019] The magnetic attraction device, limiting device, tower, and wind turbine generator provided in this application embodiment magnetically connect the base and the tower through the magnetic attraction capability of the magnetic attraction component. This achieves a magnetic connection between the magnetic attraction device and the tower, ensuring the reliability of the connection between them while avoiding welding to the tower. This reduces the adverse effects on the fatigue strength of the tower and avoids redundancy in tower strength due to thickening, which is beneficial for reducing the weight of the tower and improving its economic efficiency. Attached Figure Description

[0020] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a tower provided in one embodiment of this application;

[0022] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0023] Figure 3 A schematic diagram of the structure of the support device for a tower provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of a tower provided in another embodiment of this application;

[0025] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0026] Figure 6 This is a schematic diagram of the tower structure provided in another embodiment of this application;

[0027] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0028] Figure 8 For along Figure 7 Schematic diagram of the cross-sectional structure of line AA in the middle;

[0029] Figure 9 This is a schematic diagram of the tower structure provided in another embodiment of this application;

[0030] Figure 10 for Figure 9 A magnified view of a portion of the image;

[0031] Figure 11 A schematic diagram of the bracket used in the support device and limiting device of the tower provided in the embodiments of this application;

[0032] Figure 12 Another structural schematic diagram of the bracket used for the support device and limiting device of the tower provided in the embodiments of this application;

[0033] Figure 13 A partial structural schematic diagram of the tower limiting device provided in the embodiments of this application;

[0034] Figure 14 A schematic diagram of the structure of the magnetic suction device of the tower limiting device provided in the embodiments of this application;

[0035] Figure 15 Exploded view of the magnetic suction device of the tower limiting device provided in the embodiments of this application;

[0036] Figure 16 A schematic diagram of the structure of the tower limiting device provided in the embodiments of this application;

[0037] Figure 17 Another structural schematic diagram of the tower limiting device provided in the embodiments of this application.

[0038] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0039] Explanation of icon numbers:

[0040] M, cylinder; M1, flange; M2, platform; M21, connecting plate;

[0041] S, cable;

[0042] A. Load-bearing device;

[0043] B. Limiting device;

[0044] C. Support device; C1. Support part;

[0045] 1. Lifting lugs;

[0046] 2. Suspension rope;

[0047] 3. Bracket; 31. Frame; 311. Mounting plate; 312. Positioning plate; 313. Fixing plate; 3131. Strip hole; 314. Second connecting part; 3141. Third connecting hole; 3142. Fourth connecting hole; 32. Cable clamp; 321. Cable clamping hole; 33. Rope clamp; 331. Rope clamping hole;

[0048] 4. Magnetic suction device; 40. First connecting part; 401. First connecting hole; 402. Second connecting hole; 41. Base; 411. Groove; 412. Mounting hole; 42. Magnetic suction element; 43. Connector; 431. First part; 432. Second part; 44. Protective sleeve. Detailed Implementation

[0049] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0050] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the tower and wind turbine generator set of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] like Figures 13 to 15 As shown, this application embodiment provides a magnetic attraction device 4, including a base 41, a magnetic attraction element 42, and a connector 43.

[0052] The base 41 has a first side and a second side that are arranged opposite to each other.

[0053] The magnetic attractor 42 is located on the first side of the base 41 and is connected to the base 41.

[0054] A connector 43 is disposed on a base 41, and the connector 43 protrudes at least partially from the second side of the base 41 by a predetermined length for connecting an additional member, thereby enabling the additional member to maintain a predetermined distance from the base 41.

[0055] Connector 43 is used to connect additional components, such as brackets in the prior art.

[0056] During application, the magnetic suction device 4 uses magnetic components to install and fix the base in a magnetic connection manner.

[0057] For example, when applied to a tower, the magnetic adsorption capability of the magnetic suction component is used to magnetically connect the base and the tower, thereby achieving a magnetic connection between the magnetic suction device 4 and the tower. This ensures the reliability of the connection between the device and the tower while avoiding welding of the tower, thus reducing the adverse effects on the fatigue strength of the tower and avoiding redundancy in tower strength due to thickening. This is beneficial for reducing the weight of the tower and improving its economy. Since the connector 43 protrudes by a predetermined length, the additional component can maintain a predetermined distance from the base 41, which is beneficial for the additional component to adapt to cylinders M with different radii and curvatures.

[0058] like Figures 13 to 15 As shown, this application embodiment provides a magnetic attraction device 4, including a base 41, a magnetic attraction element 42, and a connector 43.

[0059] The base 41 has a first side and a second side that are arranged opposite to each other.

[0060] The magnetic suction element 42 is disposed on the first side of the base 41 and connected to the base 41.

[0061] The connector 43 is provided on the base 41 and is used to connect the additional component and make the additional component located on the second side of the base. The connector 43 is provided with an adjustment structure, which can make the position of the additional component relative to the base 41 change.

[0062] For example, when applied to a tower, the magnetic attraction capability of the magnetic chuck connects the base 41 to the tower, thus achieving a magnetic connection between the magnetic chuck device 4 and the tower. This ensures reliable connection between the device and the tower while avoiding welding to the tower, thereby reducing adverse effects on the tower's fatigue strength and preventing redundancy in tower strength due to thickening. This facilitates weight reduction and improves the tower's economic efficiency. Furthermore, the adjustment structure of the connector 43 allows the additional component to have rotational freedom relative to the base 41, enabling angle adjustment between the magnetic chuck device 4 and the additional component. This reduces the bending moment of the additional component on the magnetic chuck device 4 and facilitates adaptation to towers with different radii and curvatures, improving the connection strength between the magnetic chuck device 4 and the tower. In addition, when the additional component sways horizontally due to vibration, the adjustment structure allows the position of the additional component relative to the base 41 to change, reducing stress concentration at the connection between the additional component and the tower, which could lead to connection failure of the magnetic chuck device 4 and improving the stability of the connection between the additional component and the tower.

[0063] like Figures 1 to 10 As shown in the figure, this application provides a tower, which includes a cylinder M, a cable S, a load-bearing device A, and a limiting device B.

[0064] The cylinder M is set vertically, and the cable S is located inside the cylinder M and extends along the axial direction of the cylinder M. The cable S is used to realize the transmission of electrical energy and electrical signals.

[0065] The bearing device A is connected to the cylinder M, and the cable S is connected to the bearing device A. The bearing device A is configured to bear the vertical load of the cable S, and when the bearing device A is connected to the cable S, it can limit the horizontal displacement of the cable S.

[0066] Limiting device B is connected to cylinder M, and cable S is connected to limiting device B. Limiting device B is configured to limit the horizontal displacement of cable S, and when connected to cable S, limiting device B can bear a small amount of the vertical load of cable S and share the bearing pressure of bearing device A.

[0067] The connection strength between the bearing device A and the cylinder M is higher than the connection strength between the limiting device B and the cylinder M. Optionally, the bearing device A and the cylinder M are fixed by welding, and the limiting device B and the cylinder M are fixed by adsorption. For example, the limiting device B and the cylinder M are fixed by magnetic adsorption.

[0068] When cable S is installed, the vertical load of cable S can be borne by the bearing device A, while the limiting device B is mainly used to limit the horizontal displacement of cable S and is basically not used to bear the vertical load of cable S. Therefore, the connection strength between the bearing device A and the cylinder M is higher than the connection strength between the limiting device B and the cylinder M. On the one hand, this ensures the bearing capacity of the bearing device A for cable S, and on the other hand, it allows for a corresponding reduction in the thickness of the cylinder M at the location of the limiting device B, thereby reducing the strength redundancy of the tower and improving the economy of the tower.

[0069] like Figure 1 , Figure 4 , Figure 6 and Figure 9 As shown, according to one aspect of the embodiments of this application, the limiting device B is provided in multiple sets, and the multiple sets of limiting devices B are arranged at intervals along the axial direction of the cylinder M, so as to be connected to the cable S respectively along the extension direction of the cable S, providing multiple positioning points for the cable S, and realizing the positioning and holding of the cable S in the horizontal direction.

[0070] The bearing device A is provided in at least one set. The bearing device A is positioned above the center of gravity of the cable S to effectively bear the vertical load of the cable S, suspend the cable S, and allow the cable S to hang down naturally in the vertical direction.

[0071] At least one set of bearing devices A is located above each limiting device B to fix the top of the cable S, so that the cable S extends naturally downward in the vertical direction, reducing unnecessary bending of the cable S.

[0072] like Figures 1 to 3As shown, according to one aspect of an embodiment of this application, a flange M1 is provided at the top of the cylinder M, and the supporting device A is welded and fixedly connected to the flange M1. This effectively avoids the need for welding between the supporting device A and the cylinder M, eliminating the need to increase the thickness of the cylinder M to meet welding requirements, thereby effectively reducing the strength redundancy of the cylinder M, which is beneficial for achieving thinner and lighter cylinder M and improving the overall economic efficiency of the tower.

[0073] like Figure 2 and Figure 3 As shown, according to one aspect of an embodiment of this application, the supporting device A includes a lug 1, a rope 2, and a bracket 3.

[0074] The lifting lug 1 is welded and fixedly connected to the flange M1, providing a connection point for the lifting rope 2.

[0075] The lifting rope 2 extends along the axial direction of the cylinder M, and the upper end of the lifting rope 2 is connected to the lifting lug 1; the bracket 3 is connected to the lower end of the lifting rope 2. By adjusting the connection length of the lifting rope 2, the bracket 3 can be leveled.

[0076] Cable S is connected to bracket 3. The weight of cable S is transferred to flange M1 through bracket 3, suspension rope 2 and lifting lug 1, and then evenly applied to cylinder M through flange M1. This not only bears the vertical load of cable S, but also improves the uniformity of force on cylinder M.

[0077] like Figure 2 and Figure 3 As shown, according to one aspect of the embodiments of this application, a platform M2 is provided inside the cylinder M. The platform M2 is used to carry tools, components and personnel, so that personnel can perform maintenance and repair on the wind turbine installed on the top of the tower.

[0078] Platform M2 has a through hole for cable S to pass through. Bracket 3 is connected to platform M2 through support C1 and spans the through hole. Since the connection position of lifting lug 1 and flange M1 may be relatively close to the central axis of cylinder M, after cable S passes through bracket 3, it will gradually move away from the central axis of cylinder M and eventually be positioned on the inner wall of cylinder M by limiting device B. By setting support C1 to position bracket 3 on platform M2 and spanning the through hole, it can provide guiding support for cable S, allowing cable S to pass through the through hole smoothly and preventing cable S from contacting the edge of the through hole and being damaged.

[0079] like Figure 4 and Figure 5As shown, according to one aspect of the embodiments of this application, the supporting device A is a bracket 3, which is welded and fixed to the flange M1. This can effectively improve the connection reliability between the vertical limiting device and the flange M1, and at the same time, it can effectively avoid the situation of welding between the supporting device A and the cylinder M. There is no need to increase the thickness of the cylinder M to meet the welding requirements, thereby effectively reducing the strength redundancy of the cylinder M, which is conducive to achieving thinning and weight reduction of the cylinder M and improving the overall economy of the tower.

[0080] Cable S is connected to bracket 3. The weight of cable S is transferred to flange M1 through bracket 3 and then evenly distributed onto cylinder M through flange M1. This not only enables the cable S to bear the vertical load, but also improves the uniformity of the force on cylinder M.

[0081] like Figure 4 and Figure 5 As shown, according to one aspect of an embodiment of this application, a platform M2 is provided inside the cylinder M. The platform M2 has a through hole for the cable S to pass through. A support device C is connected to the platform M2, spanning the through hole. The cable S is connected to the support device C. Since the connection position between the bearing device A and the flange M1 may be relatively close to the central axis of the cylinder M, and the cable S will gradually move away from the central axis of the cylinder M and eventually be positioned on the inner wall of the cylinder M by the limiting device B, by setting the support device C on the platform M2 and having the support device C span the through hole, the support device C can provide guiding support for the cable S, allowing the cable S to pass smoothly through the through hole and preventing the cable S from contacting the edge of the through hole and being damaged.

[0082] Optionally, the support device C is also a bracket 3.

[0083] like Figures 6 to 8 As shown, according to one aspect of an embodiment of this application, a platform M2 is provided inside the cylinder M, and a supporting device A is installed on the platform M2. A cable S is connected to the supporting device A, and the weight of the cable S is evenly transferred to the cylinder M through the supporting device A and the platform M2. This achieves the bearing of the vertical load of the cable S while improving the uniformity of stress on the cylinder M. It effectively avoids the need for welding between the supporting device A and the cylinder M, eliminating the need to increase the thickness of the cylinder M to meet welding requirements. This effectively reduces the strength redundancy of the cylinder M, facilitating the thinning and weight reduction of the cylinder M and improving the overall economic efficiency of the tower.

[0084] like Figures 6 to 8 As shown, according to one aspect of the embodiment of this application, the platform M2 is provided with a through hole for the cable S to pass through, and a connecting plate M21 is connected to the periphery of the through hole. The connecting plate M21 is perpendicular to the platform M2 and serves as the mounting base for the support device A.

[0085] Specifically, the supporting device A is a bracket 3, which is installed on the connecting plate M21. Along the axial direction of the cylinder M, the projection of the bracket 3 falls into the projection of the through hole. The cable S is connected to the bracket 3. Since the top of the cable S is connected to the wind turbine, the position of the cable S is relatively close to the central axis of the cylinder M. Along the direction from top to bottom, the cable S will gradually move away from the central axis of the cylinder M and finally be positioned on the inner wall of the cylinder M by the limiting device B. By setting the connecting plate M21 around the through hole on the platform M2, the bracket 3 is installed on the connecting plate M21, and the projection of the bracket 3 along the axial direction of the cylinder M falls into the through hole. This allows the bracket 3 to support and guide the cable S to pass smoothly through the through hole while bearing the vertical load of the cable S, preventing the cable S from contacting the edge of the through hole and being damaged.

[0086] like Figure 9 and Figure 10 As shown, according to one aspect of an embodiment of this application, the supporting device A is a bracket 3, and a welding area is provided on the wall of the cylinder M. The bracket 3 is welded and fixed to the welding area, and the wall thickness at the welding area is greater than the wall thickness of the cylinder M in other parts besides the welding area. In this embodiment, by locally thickening the cylinder M at the welding position between the supporting device A and the cylinder M, the strength of the cylinder M in the welding area can be effectively improved, thereby ensuring the bearing capacity of the supporting device A for the vertical load of the cable S. This eliminates the need to increase the overall thickness of the cylinder M, which is beneficial for reducing the thickness and weight of the cylinder M and improving the economic efficiency of the tower.

[0087] like Figure 11 and Figure 12 As shown, according to one aspect of the embodiments of this application, the bracket 3 includes a frame 31 and a cable clamp 32. The cable clamp 32 is used to clamp the cable S, and the frame 31 is used to support the cable clamp 32 and provide an installation base for the cable clamp 32.

[0088] The frame 31 is used to install the bracket 3. The frame 31 has a first side and a second side arranged opposite to each other. The first side of the frame 31 faces the direction of the inner wall of the cylinder M, and the other side of the frame 31 faces the direction of the central axis of the cylinder M.

[0089] The cable clamp 32 is located on the second side of the frame 31 and is detachably connected to the frame 31. It should be noted that the number of cable clamps 32 can be determined according to the number of cables S that need to be fixed, and this application is not limited thereto.

[0090] The cable clamp 32 has a cable clamping hole 321. The cable clamp 32 is held in the cable clamping hole 321. The maximum diameter of the cable clamping hole 321 is slightly smaller than the diameter of the corresponding cable S, so as to ensure that the cable clamping hole 321 can clamp the cable S, thereby providing a reliable clamping force for the cable S.

[0091] like Figure 11 and Figure 12 As shown, according to one aspect of an embodiment of this application, the frame 31 includes a mounting plate 311 and two positioning plates 312.

[0092] Mounting plate 311 is used to mount each cable clamp 32, and the cable clamp 32 can be detachably mounted on mounting plate 311.

[0093] Two positioning plates 312 are respectively connected to the two ends of the mounting plate 311 along the circumference of the cylinder M, and the two positioning plates 312 are used to connect with the cylinder M.

[0094] The positioning plate 312 and the mounting plate 311 form an angle of less than 180°, with the opening of the angle facing the direction of the central axis of the cylinder M. This is equivalent to making the two positioning plates 312 conform to the arc-shaped inner surface of the cylinder M, which helps to optimize the force between the two when the two positioning plates 312 are connected to the cylinder M.

[0095] like Figure 11 and Figure 12 As shown, according to one aspect of the embodiment of this application, the frame 31 further includes a rope clamp 33, which is detachably disposed on the second side of the frame 31. The rope clamp 33 has a rope holding hole 331 in which a rope is held. One end of the rope is connected to the top of the cylinder M, and the other end of the rope is connected to the bottom of the cylinder M. The rope is tensioned along the axial direction of the cylinder M.

[0096] The diameter of the rope clamping hole 331 is smaller than the diameter of the rope, so that the rope is clamped in the rope clamping hole 331. The rope can provide traction force for the cable S bracket 3, reduce stress concentration at the connection between the cable S bracket 3 and the cylinder M, and optimize the force on the cable S bracket 3.

[0097] like Figure 11 and Figure 12 As shown, according to one aspect of the embodiment of this application, the frame 31 further includes two fixing plates 313, each fixing plate 313 is connected to a positioning plate 312 and located in the included angle, and is connected at the connection between the mounting plate 311 and the positioning plate 312; the mounting plate 311, the positioning plate 312 and the fixing plate 313 are integrally formed and connected to ensure the structural strength of the overall structure.

[0098] The positioning plate 312 provides a base for setting the rope clamp 33, and each positioning plate 312 has a rope clamp 33; thus, the rope provides traction force to both ends of the cable S-bracket 3, which helps to ensure that the cable S-bracket 3 is subjected to uniform force.

[0099] The center of the cable clamping hole 321 is located on the line connecting the centers of the two rope clamping holes 331, which enables each cable S and each rope to be laid in the same plane, effectively optimizing the force on the rope and cable S and avoiding the situation where the rope or cable S bends due to inconsistent force directions.

[0100] like Figure 11 and Figure 12 As shown, according to one aspect of the embodiment of this application, the fixing plate 313 is provided with a strip hole 3131 extending radially along the cylinder M. The rope clamp 33 is detachably installed on the fixing plate 313 through the strip hole 3131. By adjusting the installation position of the rope clamp 33 in the strip hole 3131, the relative position between the rope and the cylinder M can be adjusted so that each rope and each cable S can be laid in the same plane.

[0101] Optionally, the rope clamp 33 includes a U-shaped buckle, with both ends of the buckle passing through the fixing plate 313 and fixed by a limiting member, and the frame and the fixing plate 313 enclose a rope clamping hole 331.

[0102] Optionally, in such Figures 1 to 3 In one embodiment, the suspension rope 2 can be used directly instead of the rope.

[0103] like Figures 13 to 17 As shown, according to one aspect of an embodiment of this application, the limiting device B includes a magnetic suction device 4 and a bracket 3.

[0104] The magnetic attraction device 4 is located inside the cylinder M and is fixed to the inner wall of the cylinder M by magnetic attraction. The magnetic attraction device 4 is installed on the inner wall of the cylinder M by magnetic attraction, which can effectively avoid adverse effects on the fatigue strength of the cylinder M.

[0105] The bracket 3 is located inside the cylinder M. The bracket 3 is detachably connected to the magnetic attraction device 4, and the cable S is connected to the bracket 3. The specific structure of the bracket 3 in the limiting device B is basically the same as that of the bracket 3 in the bearing device A. The following description only describes the parts of the bracket 3 in the limiting device B that are different from those in the bearing device A. The same parts will not be described again in this application.

[0106] like Figures 13 to 17 As shown, according to one aspect of the embodiments of this application, the magnetic suction device 4 has a first connecting portion 40, and the bracket 3 has a second connecting portion 314. The first connecting portion 40 and the second connecting portion 314 are detachably connected, thereby realizing the installation connection between the magnetic suction device 4 and the bracket 3.

[0107] At least one of the first connecting portion 40 and the second connecting portion 314 has a plate-like structure and extends along a horizontal plane inside the cylinder M. The horizontal plane intersects with the axial direction of the cylinder M, so that the first connecting portion 40 and / or the second connecting portion 314 have a certain size in the horizontal direction. When a load in the horizontal direction is applied to the first connecting portion 40 and / or the second connecting portion 314, the first connecting portion 40 and the second connecting portion 314 are not prone to deformation, which improves the fatigue resistance of the first connecting portion 40 and / or the second connecting portion 314 in the horizontal direction, thereby improving the fatigue resistance of the connection between the limiting device B and the cylinder M in the horizontal direction.

[0108] The first connecting part 40 and the second connecting part 314 are overlapped along the axial direction of the cylinder M and are detachably connected by fasteners, so as to realize the detachable connection between the bracket 3 and the magnetic suction device 4, while improving the fatigue resistance of the first connecting part 40 and the second connecting part 314 along the axial direction of the cylinder M.

[0109] like Figures 13 to 17 As shown, according to one aspect of the embodiments of this application, the first connecting part 40 and the second connecting part 314 can rotate relative to each other, and the axis of rotation between the first connecting part 40 and the second connecting part 314 is parallel to the axial direction of the cylinder M, so as to realize the angle adjustment between the magnetic suction device 4 and the bracket 3, thereby adapting to cylinders M with different radii and curvatures.

[0110] Optionally, according to one aspect of the present application, at least one through hole is provided on the first connecting part 40 and the second connecting part 314 respectively. The through hole on the first connecting part 40 and the through hole on the second connecting part 314 are connected in correspondence and are connected through a fastener to realize the rotational connection between the first connecting part 40 and the second connecting part 314.

[0111] like Figures 13 to 17 As shown, according to one aspect of an embodiment of this application, a first connecting portion 40 is provided with a first connecting hole 401 and a second connecting hole 402 spaced apart, and a third connecting hole 3141 and a fourth connecting hole 3142 are provided with a third connecting hole 3141 and a fourth connecting hole 3142 spaced apart. The first connecting hole 401 and the third connecting hole 3141 are connected to each other, and the second connecting hole 402 and the fourth connecting hole 3142 are connected to each other. The first connecting hole 401 and the third connecting hole 3141 are fixed through a fastener, and the second connecting hole 402 and the fourth connecting hole 3142 are fixed through a fastener, thereby completing the connection between the first connecting portion 40 and the second connecting portion 314.

[0112] The second connecting hole 402 and / or the fourth connecting hole 3142 are arc-shaped holes. The center of the arc of the arc-shaped hole coincides with the center of the first connecting hole 401 and the center of the third connecting hole 3141, so that the first connecting part 40 and the second connecting part 314 can rotate slightly about the fixing member passing through the first connecting hole 401 and the third connecting hole 3141 as the pivot, so as to adjust the angle between the first connecting part 40 and the second connecting part 314, thereby adapting to cylinders M with different inner diameters.

[0113] For example, the angle between the first connecting part 40 and the second connecting part 314 can be about 4°, which can be adapted to towers with an inner diameter of 3000mm to 5000mm.

[0114] like Figures 13 to 17 As shown, according to one aspect of an embodiment of this application, the magnetic suction device 4 includes a base 41, a magnetic suction member 42, and a connector 43. The base 41 is used to assemble the magnetic suction member 42 and the connector 43 into a whole. The magnetic suction member 42 is used to provide an adsorption force to achieve a connection with the cylinder M. The connector 43 is used to form a first connecting part 40 to achieve a connection with the bracket 3.

[0115] The base 41 has a first side and a second side arranged opposite to each other; the first side faces the inner surface of the cylinder M, and the second side faces the central axis of the cylinder M.

[0116] The magnetic suction element 42 is disposed on the first side of the base 41 and is attracted and fixed to the base 41, and the magnetic suction element 42 is attracted and fixed to the cylinder M; thus realizing the attraction and fixation between the base 41 and the cylinder M.

[0117] The connector 43 includes a first part 431 and a second part 432 that are connected to each other. The first part 431 and the second part 432 are integrally formed to ensure the structural strength of the connector 43. The first part 431 is located on the first side of the base 41, and the second part 432 extends through the first side of the base 41 to the second side of the base 41 as a first connecting part 40.

[0118] like Figure 16 and Figure 17 As shown, according to one aspect of the present application, the second connecting part 314 is fixedly connected to the first side of the frame 31, and the second connecting part 314 and the frame 31 are integrally formed to ensure the connection strength between the second connecting part 314 and the frame 31.

[0119] Specifically, each of the two positioning plates 312 is provided with a second connecting part 314. Each second connecting part 314 is connected to the cylinder M through a set of magnetic attraction devices 4, so that the frame 31 is installed on the inner wall of the cylinder M at both ends along the circumference of the cylinder M, which can effectively maintain the relative position between the frame 31 and the cylinder M.

[0120] The mounting plate 311, positioning plate 312, fixing plate 313 and second connecting part 314 are integrally formed and connected to ensure the structural strength of the overall structure.

[0121] Optionally, such as Figure 15 As shown, according to one aspect of the embodiment of this application, a groove 411 is provided on the first side of the base 41, and the magnetic attractor 42 and the first part 431 are embedded and fixed in the groove 411. By providing the groove 411, a space can be provided for the magnetic attractor 42 and the first part 431. The groove wall of the groove 411 can increase the adsorption area between the magnetic attractor 42 and the base 41, thereby improving the reliability of the connection between the magnetic attractor 42 and the base 41. The groove wall of the groove 411 can provide limiting support for the first part 431, thereby providing support for the first part 431 and even the entire connector 43, reducing the relative movement of the connector 43 relative to the base 41.

[0122] Optionally, such as Figure 15 As shown, according to one aspect of an embodiment of this application, two magnetic suction members 42 are provided, and the two magnetic suction members 42 are spaced apart along the axial direction of the cylinder M. A first portion 431 is clamped and fixed between the two magnetic suction members 42. The two magnetic suction members 42 and the first portion 431 cooperate to fill the internal space of the groove 411, so that the magnetic suction device 4 has a flat first side surface, thereby ensuring reliable contact between the magnetic suction device 4 and the inner surface of the cylinder M.

[0123] like Figure 15 As shown, according to one aspect of the embodiment of this application, the base 41 is provided with a mounting hole 412, which penetrates the first side surface and the second side surface of the base 41, and is used for the connector 43 to pass through.

[0124] Along the through direction of the mounting hole 412, the projection of the mounting hole 412 falls into the projection of the first part 431. That is, along the radial direction of the mounting hole 412, the size of the first part 431 is larger than the size of the mounting hole 412. The first part 431 cannot pass through the mounting hole 412 and can only abut against and limit the first side surface of the base 41.

[0125] The projection of the second part 432 coincides with the projection of the mounting hole 412. That is, along the radial direction of the mounting hole 412, the shape and size of the second part 432 match the shape and size of the mounting hole 412 so that the second part 432 will not wobble relative to the mounting hole 412 after passing through the mounting hole 412.

[0126] like Figure 15As shown, according to one aspect of an embodiment of this application, the magnetic attraction device 4 further includes a protective sleeve 44, which covers the base 41 and the magnetic attraction element 42. The protective sleeve 44 is made of silicone or rubber, which can provide protection for the base 41 and the magnetic attraction element 42, while increasing the friction between the magnetic attraction device 4 and the cylinder M, which is beneficial for maintaining the relative position between the magnetic attraction device 4 and the cylinder M.

[0127] Secondly, embodiments of this application also provide a wind turbine generator set, wherein the wind turbine generator set includes a tower as described in the first aspect.

[0128] The wind turbine generator provided in this application embodiment has a tower with a bearing device A and a limiting device B inside the cylinder M. When the cable S is installed, the bearing device A can bear the vertical load of the cable S, while the limiting device B is mainly used to limit the horizontal displacement of the cable S and is basically not used to bear the vertical load of the cable S. Therefore, the connection strength between the bearing device A and the cylinder M is higher than the connection strength between the limiting device B and the cylinder M. On the one hand, this ensures the bearing function of the bearing device A on the cable S, and on the other hand, it can reduce the thickness of the cylinder M at the location of the limiting device B, thereby reducing the strength redundancy of the tower and improving the economy of the tower.

[0129] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A magnetic attraction device, characterized in that, The magnetic attraction device (4) includes: The base (41) has a first side and a second side that are arranged opposite to each other; A magnetic suction element (42) is disposed on the first side of the base (41) and connected to the base (41); A connector (43) is disposed on the base (41), the connector (43) protruding at least partially from the second side of the base (41) by a predetermined length for connecting an additional member, which enables the additional member to maintain a predetermined distance from the base (41).

2. The magnetic attraction device according to claim 1, characterized in that, The connector (43) includes a first part (431) and a second part (432) that are connected to each other. The first part (431) is located on a first side of the base (41). The second part (432) extends through the base (41) from the first side of the base (41) and protrudes beyond the second side by a predetermined length. The portion of the second part that protrudes beyond the second side forms a first connecting portion (40).

3. The magnetic attraction device according to claim 2, characterized in that, The base (41) has a groove (411) on its first side, and the magnetic suction member (42) and the first part (431) are embedded and fixed in the groove (411).

4. The magnetic attraction device according to claim 2, characterized in that, Two magnetic suction components (42) are provided, and the two magnetic suction components (42) are spaced apart. The first part (431) is clamped and fixed between the two magnetic suction components (42).

5. The magnetic attraction device according to claim 2, characterized in that, The base (41) is provided with a mounting hole (412), which penetrates the first side surface and the second side surface of the base (41); along the through direction of the mounting hole (412), the projection of the mounting hole (412) falls into the projection of the first part (431).

6. A magnetic attraction device, characterized in that, The magnetic attraction device (4) includes: The base (41) has a first side and a second side that are arranged opposite to each other; A magnetic suction element (42) is disposed on the first side of the base (41) and connected to the base (41); A connector (43) is provided on the base (41) for connecting an additional member and placing the additional member on the second side of the base. The connector (43) is provided with an adjustment structure that allows the position of the additional member relative to the base (41) to change.

7. The magnetic attraction device according to claim 6, characterized in that, The adjustment structure is located on the second side of the base.

8. The magnetic attraction device according to claim 6, characterized in that, The connector (43) is disposed on the base (41), and the connector (43) protrudes at least partially from the second side of the base (41) by a predetermined length. The adjustment structure includes a through hole, which is opened in the connector (43). The connector (43) is connected to the additional member by a through member, which can be inserted into the through hole and has a degree of freedom in the radial direction of the through hole.

9. The magnetic attraction device according to claim 8, characterized in that, The connector (43) has a plate-like structure, and / or the through hole is an arc-shaped hole or a waist-shaped hole.

10. The magnetic attraction device according to any one of claims 1 to 9, characterized in that, The magnetic attraction device (4) also includes a protective sleeve (44) which covers the base (41) and the magnetic attraction element (42).

11. A limiting device, characterized in that, The limiting device (B) includes: Additional components, including brackets (3); The magnetic suction device (4) as claimed in any one of claims 1 to 10, wherein the bracket (3) has a second connecting portion (314), and the connector (43) of the magnetic suction device (4) is detachably connected to the second connecting portion (314).

12. The limiting device according to claim 11, characterized in that, The connector (43) and the second connecting part (314) have relative degrees of freedom.

13. A tower, characterized in that, The tower includes: a magnetic suction device (4) as described in any one of claims 1 to 10, or a limiting device (B) as described in claim 11 or 12.

14. The tower according to claim 13, characterized in that, The tower includes: Cylinder (M); The cable (S) is located inside the cylinder (M) and extends along the axial direction of the cylinder (M); The limiting device (B) is connected to the cylinder (M), and the bracket (3) of the limiting device (B) is provided with a cable clamp. The cable (S) is connected to the cable clamp, and the magnetic suction device (4) is fixed to the inner wall of the cylinder (M).

15. A wind turbine generator set, characterized in that, The wind turbine generator set includes the tower as described in claim 13 or 14.

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