Supporting beam, tower drum and wind generating set

Abstract

The embodiment of the utility model provides a supporting beam, a tower drum and a wind generating set, the supporting beam is used for the wind generating set, and the supporting beam comprises a main beam; the connecting beam is connected to one side of the main beam and used for being connected with the inner side of a tower drum of the wind generating set; the side beam is connected to at least one end of the main beam, a tower drum accessory connecting part is arranged on the side beam, and the tower drum accessory connecting part is used for connecting tower drum accessories; wherein the supporting beam has an unfolded state and a folded state, and the side beam can be rotationally arranged relative to the main beam in the direction close to the main beam, so that the supporting beam can be converted into the folded state from the unfolded state. According to the supporting beam provided by the embodiment of the invention, the supporting beam has the unfolded state and the folded state, the distance between the end, away from the main beam, of the side beam in the unfolded state and the main beam is long, and more cables can be conveniently arranged on measurement. In the folding state, the side beams are arranged close to the main beams, the space size occupied by the whole supporting beam can be reduced, and the supporting beam is convenient to transport and store.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a support beam, tower and wind turbine generator set. Background Technology

[0002] With the continuous development of technology, the requirements for wind turbine generators are becoming increasingly stringent. Wind turbine generators contain support beams to suspend cables and other components. As the number of cables inside wind turbine generators increases, the overall size of these support beams is gradually increasing, making their transportation and storage extremely inconvenient. Utility Model Content

[0003] This application provides a support beam, a tower, and a wind turbine generator set, designed to facilitate the transportation and storage of the support beam.

[0004] An embodiment of the first aspect of this application provides a support beam for a wind turbine generator set. The support beam includes: a main beam; a connecting beam connected to one side of the main beam, the connecting beam being used to connect to the inner side of the tower of the wind turbine generator set; and a side beam connected to at least one end of the main beam, the side beam being provided with a cable clamping part for clamping cables. The support beam has an unfolded state and a folded state, and the side beam is rotatable relative to the main beam in a direction close to the main beam, so that the support beam can change from the unfolded state to the folded state.

[0005] According to an embodiment of the first aspect of this application, in the unfolded state, there is a first angle between the extension direction of the main beam and the extension direction of the side beam, and in the folded state, there is a second angle between the extension direction of the main beam and the extension direction of the side beam, wherein the first angle is greater than the second angle.

[0006] According to any of the foregoing embodiments of the first aspect of this application, a limiting part is further included, which is detachably connected to at least one of the main beam and the side beam and is used to maintain the relative rotational position of the main beam and the side beam.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the limiting part has a first limiting part and a second limiting part that are intersecting and connected. The first limiting part is fixedly connected to the main beam. In the unfolded state, the second limiting part and the side beam are detachably connected to maintain a first included angle between the extension direction of the main beam and the extension direction of the side beam.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the main beam extends along a first direction, and in the unfolded state, the side beam extends along a second direction. Both the main beam and the side beam have a first connecting hole that passes through a third direction. The support beam also includes a pivot shaft located in the first connecting hole. The main beam and the side beam are rotatably connected by the pivot shaft. The first direction, the second direction, and the third direction intersect each other, and the third direction is perpendicular to the plane containing the first direction and the second direction.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the main beam includes a first base plate and first side plates connected to the first base plate on two third-direction sides, and a first connecting hole penetrates the two first side plates.

[0010] And / or, the side beam includes a second base plate and second side plates connected to the second base plate on three opposite sides, with a first connecting hole penetrating both second side plates.

[0011] According to any of the foregoing embodiments of the first aspect of this application, two side beams are connected to both ends of the main beam. In the folded state, the two side beams are detachably connected so that the support beam remains in the folded state; or, the side beams are detachably connected to the main beam so that the support beam remains in the folded state.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the main beam is provided with multiple sets of connecting parts distributed at intervals, and the connecting beam is detachably connected to the main beam through at least one set of connecting parts.

[0013] According to any of the foregoing embodiments of the first aspect of this application, a connecting ear plate is provided on the side of the main beam facing the side beam, and the connecting ear plate is used to connect the climbing ladder device.

[0014] The second aspect of this application also provides a tower, including a tower body and a support beam of any of the first aspects described above, wherein the connecting beam (200) is connected to the inner wall of the tower body.

[0015] The third aspect of this application also provides a wind turbine generator set, including a tower attachment connection part (310) and a tower of any of the second aspects of the above embodiments, wherein the tower attachment connection part (310) is disposed on the side beam (300).

[0016] The support beam provided in this embodiment includes a main beam, a connecting beam, and side beams. The main beam provides primary support, and the connecting beams connect the support beam to the inside of the wind turbine tower. The side beams are equipped with cable clamps for holding cables. The support beam has an unfolded state and a folded state. When the side beam rotates near the main beam, it changes from the unfolded state to the folded state. Therefore, in the unfolded state, the distance between the end of the side beam furthest from the main beam and the main beam is longer, facilitating the installation of more cables. In the folded state, the side beam is positioned close to the main beam, reducing the overall space occupied by the support beam and facilitating its transportation and storage. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0018] Figure 1 This is a schematic diagram of a support beam in a folded state, provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of a support beam in its unfolded state, provided in an embodiment of this application.

[0020] Figure 3 This is a structural schematic diagram of a support beam provided in an embodiment of this application from another perspective;

[0021] Figure 4 This is an exploded structural diagram of a support beam provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Support beams;

[0024] 100. Main beam; 110. First bottom plate; 120. First side plate; 130. Connecting part; 140. Connecting lug;

[0025] 200. Connecting beam;

[0026] 300. Side beam; 310. Cable clamping part; 320. Second base plate; 330. Second side plate;

[0027] 400, Limiting part; 410, First limiting part; 420, Second limiting part;

[0028] 510. First connecting hole; 520. Rotating shaft;

[0029] X, first direction; Y, second direction; Z, third direction; α1, first included angle; α2, second included angle. Detailed Implementation

[0030] 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.

[0031] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments 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 a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] To better understand this application, the following will be combined with... Figure 1 and Figure 4 The supporting beam 10, the tower, and the wind turbine generator set of the embodiments of this application will be described in detail.

[0034] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a support beam 10 in a folded state, according to an embodiment of this application. Figure 2 This is a structural schematic diagram of a support beam 10 in its unfolded state, provided in an embodiment of this application.

[0035] like Figure 1 and Figure 2As shown, an embodiment of the first aspect of this application provides a support beam 10 for a wind turbine generator set. The support beam 10 includes a main beam 100, a connecting beam 200, and a side beam 300. The connecting beam 200 is connected to one side of the main beam 100 and is used to connect to the inner side of the wind turbine generator set's tower. The side beam 300 is connected to at least one end of the main beam 100 and is provided with a tower accessory connection part 310 for connecting tower accessories. The support beam 10 has an unfolded state and a folded state. The side beam 300 is rotatable relative to the main beam 100 in a direction close to the main beam 100, so that the support beam 10 can change from an unfolded state to a folded state. In this example, the tower accessory connection part 310 is exemplified as a cable clamping part, which is used to clamp cables. The tower accessory connection part 310 is not limited to accessories for clamping cables. Other accessories that need to be hung on the inside of the tower via the support beam 10 can also be connected using the tower accessory connection part.

[0036] In the support beam 10 provided in this embodiment, the support beam 10 includes a main beam 100, a connecting beam 200, and a side beam 300. The main beam 100 provides the primary support, and the connecting beam 200 connects the support beam 10 to the inside of the wind turbine tower. The side beam 300 is provided with a tower accessory connection part 310, which can be used to clamp cables. The support beam 10 has an unfolded state and a folded state. When the side beam 300 rotates close to the main beam 100, the support beam 10 changes from the unfolded state to the folded state. Therefore, in the unfolded state, the distance between the end of the side beam 300 furthest from the main beam 100 and the main beam 100 is relatively long, facilitating the installation of more cables on the side beam 300. In the folded state, the side beam 300 is positioned close to the main beam 100, reducing the overall space occupied by the support beam 10 and facilitating its transportation and storage. In addition, when the support beam 10 is installed into the tower, it usually needs to pass through the platform hole of the platform inside the tower. The foldable support beam 10 of this application can improve the versatility of the platform hole size inside the tower. That is to say, even when the unfolded size of the support beam 10 is large, it can adapt to the limited platform hole size.

[0037] Optionally, the main beam 100 extends along the first direction X to simplify the structure of the main beam 100.

[0038] Optionally, two or more connecting beams 200 are connected to the main beam 100, and the two or more connecting beams 200 are spaced apart along the first direction X to improve the stability of the connection between the support beam 10 and the tower.

[0039] Optionally, there are two side beams 300, which are connected to opposite ends of the main beam 100. Having two side beams 300 facilitates the installation of more tower accessory connection parts 310 and allows for the suspension of more cables on the support beam 10. Optionally, the two side beams 300 can be rotatably arranged in opposite directions to further reduce the overall space occupied by the support beam 10.

[0040] Optionally, the main beam 100, connecting beam 200, and side beam 300 are all generally rod-shaped to reduce the size of the components within the support beam 10. At least one of the main beam 100, connecting beam 200, and side beam 300 can be made of channel steel to simplify the structure of the support beam 10.

[0041] In some optional embodiments, in the unfolded state, there is a first included angle α1 between the extension direction of the main beam 100 and the extension direction of the side beam 300, and in the folded state, there is a second included angle α2 between the extension direction of the main beam 100 and the extension direction of the side beam 300, wherein the first included angle α1 is greater than the second included angle α2.

[0042] In these optional embodiments, the first included angle α1 between the main beam 100 and the side beam 300 in the unfolded state is greater than the second included angle α2 in the folded state. On the one hand, this increases the included angle space between the side beam 300 and the main beam 100 in the unfolded state, making it easier to arrange more cables; on the other hand, it reduces the included angle space between the side beam 300 and the main beam 100 in the folded state, reducing the overall space occupied by the support beam 10 in the folded state.

[0043] Optionally, the extension direction of the main beam 100 is its length direction, and the extension direction of the side beam 300 is its length direction.

[0044] In some alternative embodiments, the support beam 10 further includes a limiting portion 400, which is detachably connected to at least one of the main beam 100 and the side beam 300 and is used to maintain the relative rotational position of the main beam 100 and the side beam 300.

[0045] In these optional embodiments, by adding a limiting part 400, the relative rotational position of the main beam 100 and the side beam 300 can be limited. For example, in the unfolded state, the limiting part 400 restricts the side beam 300 from continuing to rotate relative to the main beam 100, thus ensuring the supporting effect of the support beam 10.

[0046] Optionally, the limiting part 400 has a first limiting part 410 and a second limiting part 420 that are intersecting and connected. The first limiting part 410 is fixedly connected to the main beam 100. In the unfolded state, the second limiting part 420 and the side beam 300 are detachably connected to maintain a first included angle α1 between the extension direction of the main beam 100 and the extension direction of the side beam 300.

[0047] In these optional embodiments, a limiting part 400 is fixedly provided on the main beam 100. The first limiting part 410 and the second limiting part 420 of the limiting part 400 are intersected and connected. The second limiting part 420 and the side beam 300 are detachably connected. In the unfolded state, the side beam 300 can be fixed to the second limiting part 420, thereby stabilizing the relative position of the main beam 100 and the side beam 300, so that the support beam 10 can be kept in the unfolded state. During the transportation, storage and hoisting of the support beam 10, the second limiting part 420 and the side beam 300 can be separated, so that the support beam 10 can be transformed into a folded state, reducing the space size of the support beam 10 during transportation, storage and hoisting.

[0048] Optionally, the second limiting part 420 is provided with a waist-shaped hole. In the unfolded state, the second limiting part 420 and the side beam 300 are connected to each other through the waist-shaped hole, which facilitates the adjustment of the relative position of the second limiting part 420 and the side beam 300.

[0049] Optionally, the first limiting part 410 and the second limiting part 420 can be limiting plate structures. The extension direction of the first limiting part 410 can be parallel to the extension direction of the main beam 100, and the extension direction of the second limiting part 420 can be parallel to the extension direction of the side beam 300 in the unfolded state.

[0050] In some optional embodiments, the angle between the extending direction of the first limiting portion 410 and the extending direction of the second limiting portion 420 is 130 degrees to 150 degrees. For example, the angle between the extending direction of the first limiting portion 410 and the extending direction of the second limiting portion 420 is 130 degrees, 135 degrees, 143 degrees, 148 degrees, 150 degrees, etc.

[0051] In these optional embodiments, when the angle between the extension direction of the first limiting part 410 and the extension direction of the second limiting part 420 is within the above-mentioned range, the angle between the extension direction of the side beam 300 and the extension direction of the main beam 100 in the unfolded state can be within the above-mentioned range, so that the overall structure of the support beam 10 in the unfolded state is more compatible with the shape of the tower cross-section.

[0052] In some optional embodiments, the main beam 100 extends along a first direction X, and in the unfolded state, the side beam 300 extends along a second direction Y. Both the main beam 100 and the side beam 300 have a first connecting hole 510 that passes through a third direction Z. The support beam 10 also includes a pivot 520 located in the first connecting hole 510. The main beam 100 and the side beam 300 are rotatably connected by the pivot 520. The first direction X, the second direction Y, and the third direction Z intersect each other, and the third direction Z is perpendicular to the plane containing the first direction X and the second direction Y.

[0053] In these optional embodiments, the extension direction of the pivot 520 (i.e., the third direction Z) is perpendicular to the extension directions of the side beam 300 and the main beam 100, so that the side beam 300 can rotate in the plane containing the first direction X and the second direction Y. When one end of the side beam 300 rotates around the pivot 520, the other end of the side beam 300 can move closer to or further away from the main beam 100.

[0054] Optionally, in the folded state, the side beams 300 can be rotated to be approximately parallel to the main beam 100 to minimize the spatial dimensions of the support beam 10 in the folded state. In other embodiments, when side beams 300 are provided at both ends of the main beam 100, the two side beams 300 will rotate towards each other and move closer to each other, and the two side beams 300 and the main beam 100 can form an approximate triangle.

[0055] There are several ways to set up the main beam 100; for example, the upper main beam 100 can be formed from channel steel. Figures 1 to 4 As shown, the main beam 100 may include a first base plate 110 and first side plates 120 connected to the first base plate 110 on both sides in the third direction Z. The first connecting hole 510 is provided through the two first side plates 120.

[0056] In these alternative embodiments, when the main beam 100 includes a first base plate 110 and two first side plates 120, the two first side plates 120 are spaced apart along the third direction Z, and the first connecting hole 510 passes through the two first side plates 120, which can improve the connection strength between the rotating shaft 520 and the main beam 100, making the main beam 100 less prone to deformation.

[0057] Optionally, the side beam 300 may include a second base plate 320 and second side plates 330 connected to the second base plate 320 on both sides in the third direction Z, with the first connecting hole 510 passing through the two second side plates 330.

[0058] In these alternative embodiments, when the side beam 300 includes a second base plate 320 and two second side plates 330, the two second side plates 330 are spaced apart along the third direction Z, and the first connecting hole 510 passes through the two second side plates 330, which can improve the connection strength between the rotating shaft 520 and the side beam 300, making the side beam 300 less prone to deformation.

[0059] Optionally, when the main beam 100 includes two first side plates 120 and the side beam 300 includes two second side plates 330, and the first connecting hole 510 passes through the two first side plates 120 and the two second side plates 330, the distance between the two second side plates 330 can be greater than the distance between the two first side plates 120, so that the two second side plates 330 can be fitted over the two first side plates 120, and the main beam 100 is fitted between the two second side plates 330, which facilitates the mutual connection between the main beam 100 and the side beam 300.

[0060] Optionally, in the above embodiment, the difference between the distance between the opposite outer surfaces of the two first side plates 120 and the distance between the opposite inner surfaces of the two second side plates 330 can be greater than or equal to 2mm, so that the end of the main beam 100 can be quickly fitted into the side beam 300.

[0061] Alternatively, the distance between the two first side plates 120 can be greater than the distance between the two second side plates 330, so that the two first side plates 120 can be fitted over the two second side plates 330, and the side beam 300 can be fitted between the two first side plates 120, which facilitates the connection between the main beam 100 and the side beam 300.

[0062] Optionally, in the above embodiment, the difference between the distance between the opposite outer surfaces of the two second side plates 330 and the distance between the opposite inner surfaces of the two first side plates 120 can be greater than or equal to 2mm, so that the end of the main beam 100 can be quickly fitted into the side beam 300.

[0063] Optionally, at the positions where the main beam 100 and the side beam 300 face each other, the first base plate 110 and the second base plate 320 are spaced apart. For example, the first side plate 120 protrudes relative to the first base plate 110, and the first connecting hole 510 is provided at the part of the first side plate 120 that protrudes from the first base plate 110. And / or, the second side plate 330 protrudes relative to the second base plate 320 toward the main beam 100, and the first connecting hole 510 is provided at the part of the second side plate 330 that protrudes from the second base plate 320. This makes the first base plate 110 and the second base plate 320 spaced apart from each other, so that when the side beam 300 is rotated from the unfolded state to the folded state, the positions of the first base plate 110 and the second base plate 320 will not interfere with each other. Figure 4 The example is taken as an illustration of the second side plate 330 protruding toward the main beam 100 relative to the second bottom plate 320.

[0064] Optionally, the tower accessory connection part 310 is disposed on the second base plate 320 to prevent the tower accessory connection part 310 from affecting the mutual rotational connection between the first side plate 120 and the second side plate 330.

[0065] In some alternative embodiments, as described above, when there are two side beams 300, the two side beams 300 are detachably connected in the folded state. In the folded state, the two side beams 300 can be connected to each other, keeping the support beam 10 in the folded state, or the two side beams 300 can be separated, allowing the support beam 10 to transition from the folded state to the unfolded state.

[0066] Alternatively, in some optional embodiments, the side beam 300 and the main beam 100 are detachably connected in the folded state. In the folded state, the side beam 300 and the main beam 100 can be connected to each other, keeping the support beam 10 in the folded state, or the side beam 300 and the main beam 100 can be separated, allowing the support beam 10 to transition from the folded state to the unfolded state.

[0067] In some optional embodiments, the main beam 100 is provided with multiple sets of connecting portions 130 spaced apart, and the connecting beam 200 is detachably connected to the main beam 100 through at least one set of connecting portions 130. In these optional embodiments, by providing multiple sets of connecting portions 130, the relative position between the connecting beam 200 and the main beam 100 can be adjusted, so that the support beam 10 can be adapted to towers of different sizes, thereby improving the adaptability of the support beam 10.

[0068] In some optional embodiments, a connecting lug 140 is provided on the side of the main beam 100 facing the side beam 300, and the connecting lug 140 is used to connect a ladder device. In these optional embodiments, by providing the connecting lug 140, a ladder device can be connected, making it convenient for users to climb the support beam 10 to perform maintenance on cables, etc.

[0069] The second aspect of this application also provides a tower, which includes the support beam 10 of any of the first aspect embodiments described above. Since the tower of this application includes the aforementioned support beam 10, it possesses the beneficial effects of the support beam 10, which will not be elaborated further here.

[0070] Optionally, the support beam 10 is fixed inside the tower tube at one end opposite to the main beam 100 via the connecting beam 200.

[0071] The third aspect of this application also provides a wind turbine generator set, including the tower of any of the above embodiments. Since the wind turbine generator set of the present application embodiment includes the tower described above, the wind turbine generator set of the present application embodiment has the beneficial effects of the tower described above, which will not be repeated here.

[0072] Optionally, the wind turbine generator set also includes a tower foundation and a nacelle, which are connected to both ends of the tower. Optionally, blades are also connected to the nacelle.

[0073] Optionally, during the tower fabrication process, the support beam 10 can be first set in a folded state, then the folded support beam 10 can be fixed to the inside of the tower section, and then the tower section with the support beam 10 can be hoisted to form the tower. Finally, the support beam 10 can be set in an unfolded state to facilitate the suspension of cables on the support beam 10.

[0074] 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 support beam, characterized by, The support beam (10) comprises: a main beam (100); a connecting beam (200) connected to one side of the main beam (100), the connecting beam (200) being used for connecting the inner side of the tower of the wind turbine generator set; a side beam (300) connected to at least one end of the main beam (100), the side beam (300) being used for arranging a tower accessory connecting part (310); wherein the support beam (10) has an unfolded state and a folded state, the side beam (300) can be arranged to rotate relative to the main beam (100) in a direction close to the main beam (100), so that the support beam (10) can be changed from the unfolded state to the folded state.

2. The support beam of claim 1, wherein, In the unfolded state, the main beam (100) has a first included angle (α1) with the extension direction of the side beam (300), and in the folded state, the main beam (100) has a second included angle (α2) with the extension direction of the side beam (300), the first included angle (α1) is greater than the second included angle (α2).

3. The support beam of claim 2, wherein, Further comprising a limiting part (400), the limiting part (400) is detachably connected to at least one of the main beam (100) and the side beam (300), and is used for keeping the relative rotating position of the main beam (100) and the side beam (300).

4. The support beam of claim 3, wherein, The limiting part (400) has a first limiting part (410) and a second limiting part (420) intersectingly connected, the first limiting part (410) is fixedly connected to the main beam (100), and in the unfolded state, the second limiting part (420) is detachably connected to the side beam (300) to keep the first included angle (α1) between the extension direction of the main beam (100) and the extension direction of the side beam (300).

5. The support beam according to claim 2, wherein the main beam (100) extends along a first direction (X), and in the unfolded state, the side beam (300) extends along a second direction (Y), the main beam (100) and the side beam (300) both have a first connecting hole (510) penetrating along a third direction (Z), the support beam (10) further comprises a rotating shaft (520), the rotating shaft (520) is located in the first connecting hole (510), and the main beam (100) and the side beam (300) are rotatably connected through the rotating shaft (520), wherein the first direction (X), the second direction (Y) and the third direction (Z) intersect with each other, and the third direction (Z) is perpendicular to the plane where the first direction (X) and the second direction (Y) are located.

6. The support beam of claim 5, wherein, The main beam (100) comprises a first bottom plate (110) and a first side plate (120) connected to the first bottom plate (110) on both sides of the third direction, and the first connecting hole (510) penetrates through the two first side plates (120). And / or, the side beam (300) comprises a second bottom plate (320) and a second side plate (330) connected to the two sides of the second bottom plate (320) in the third direction, and the first connecting hole (510) penetrates the two second side plates (330).

7. The support beam of claim 1, wherein, The two side beams (300) are connected to the two ends of the main beam (100), and in the folded state, the two side beams (300) are detachably connected to keep the support beam in the folded state; or the side beam (300) is detachably connected with the main beam (100) to keep the support beam in the folded state.

8. The support beam of claim 1, wherein, The main beam (100) is provided with a plurality of groups of connecting parts (130) distributed at intervals, and the connecting beam (200) is detachably connected with the main beam (100) through at least one group of connecting parts (130); and / or, The main beam (100) is provided with a connecting lug plate (140) on one side facing the side beam (300), and the connecting lug plate (140) is used for connecting a ladder climbing device.

9. A tower section, characterized by The support beam (10) comprises a tower body and the support beam (10) according to any one of claims 1-8, wherein the connecting beam (200) is connected to the inner side wall of the tower body.

10. A wind power unit, characterized in that The tower comprises a tower accessory connecting part (310) and the tower according to claim 9, wherein the tower accessory connecting part (310) is arranged on the side beam (300).

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