Wind-resistant limiting device and photovoltaic system

Abstract

The utility model discloses a wind-resistant limiting device and a photovoltaic system, the wind-resistant limiting device comprises a foundation column, a first sleeve, at least one second sleeve and a connecting piece, the foundation column is fixed on a foundation surface, one end of the first sleeve is connected with the foundation column, the second sleeve is telescopically arranged on the first sleeve, and the connecting piece is connected with the first sleeve. The connecting piece is telescopically arranged on the second sleeve, and the end, extending out of the second sleeve, of the connecting piece is used for being connected with a wind cable. Therefore, on the premise of improving the wind-resistant performance of the photovoltaic system, on one hand, the wind-resistant limiting device is of a multi-section telescopic structure, and the wind-resistant displacement requirement of the photovoltaic system can be met; and on the other hand, when the wind-resistant limiting device does not move to the stroke limit position (the maximum extending position of the connecting piece), the constraint effect cannot be generated, and the additional force generated after the constraint effect is generated cannot be completely transferred to the foundation column, so that the foundation column does not need to be set to be too large, and the wind-resistant connecting structure does not need to be additionally reinforced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a wind-resistant limiting device and a photovoltaic system. Background Art

[0002] The photovoltaic industry is developing rapidly at present, and the problem that comes with it is that the land for photovoltaic power generation is tightening year by year, and the available high-quality land is limited. Therefore, the industry began to seek suitable mountains, hills, Gobi, etc. as land for the construction of photovoltaic power stations, but due to the rugged terrain, installation is difficult, and the land utilization rate is extremely low, the overall income is low. The photovoltaic bracket adopts the prestressed bearing method of cable (such as steel strand), which has the characteristics of large span, high clearance, strong adaptability, etc., and will gradually replace the application of fixed brackets on hillsides.

[0003] However, existing flexible photovoltaic systems have poor protection against extreme wind uplift, and the ground foundation of the wind-resistant structure is large and the structural dimensions of the wind-resistant structure itself are large. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a wind-resistant limiter, which has good protection effect, small space occupation on the foundation surface, and compact structure size.

[0005] The present application further proposes a photovoltaic system using the above-mentioned wind-resistant limiting device.

[0006] In the first aspect, the present application proposes a wind-resistant limiting device, comprising: a base column, a first sleeve, a second sleeve and a connecting piece, wherein the base column is fixed to a base surface, one end of the first sleeve is connected to the base column, there is at least one second sleeve, the second sleeve is telescopically arranged on the first sleeve and is suitable for extending from the other end of the first sleeve, the connecting piece is telescopically arranged on the second sleeve, and one end of the connecting piece extending from the second sleeve is used for connecting a wind fence.

[0007] According to the wind-resistant limit device of the embodiment of the present application, while being able to improve the wind-resistant performance of the photovoltaic system, especially enabling it to have a good effect of resisting wind-lifting and coping with extreme weather, on the one hand, the wind-resistant limit device is constructed as a multi-section retractable structure, which can meet the wind-resistant displacement requirements of large displacement and large deformation of the photovoltaic system; on the other hand, when the wind-resistant limit device is not moved to the stroke limit position (the maximum extension position of the connecting piece), no restraining effect will be generated, and the additional force after the restraining effect is generated will not be completely transferred to the foundation column, so that the foundation column does not need to be set too large, and the wind-resistant connection structure does not need to be additionally strengthened.

[0008] According to some embodiments of the present application, the connecting member includes: a pull rod and a lifting ring, the wind cable is adapted to pass through the lifting ring, and the pull rod is telescopically arranged in the second sleeve.

[0009] According to some embodiments of the present application, a limiting block is arranged on the pull rod, the limiting block is located in the second sleeve, and the limiting block is in limiting cooperation with the second sleeve.

[0010] According to some embodiments of the present application, the pull rod and the lifting ring are configured as flexible members or rigid members.

[0011] According to some embodiments of the present application, the first sleeve includes: a first cylinder body and a first limiting plate located at one end of the first cylinder body, the first limiting plate is configured as an annular plate, the second sleeve passes through the first limiting plate and extends into the first cylinder body, and the other end of the first cylinder body is connected to the foundation column.

[0012] According to some embodiments of the present application, the first sleeve further includes: a reinforcing plate, the reinforcing plate is arranged on the circumferential side of the first cylinder body and is connected to the foundation column.

[0013] According to some embodiments of the present application, the first cylinder body includes a plurality of first arc-shaped plates, and the plurality of first arc-shaped plates enclose and define a first telescopic space through which the second sleeve passes.

[0014] According to some embodiments of the present application, when there are a plurality of second sleeves, the plurality of second sleeves are sleeved in sequence, and the second sleeve includes: a second cylinder body and second limiting plates and third limiting plates located at both ends of the second cylinder body. Among two adjacent second sleeves, the second limiting plate of one second sleeve is in limiting cooperation with the third limiting plate of the other second sleeve, the second limiting plate of the second sleeve connected to the connecting member is in limiting cooperation with the connecting member, and the third limiting plate of the second sleeve connected to the first sleeve is in limiting cooperation with the first sleeve.

[0015] According to some embodiments of the present application, the second cylinder body includes a plurality of second arc-shaped plates, and the plurality of second arc-shaped plates enclose and define a second telescopic space through which the connecting member passes.

[0016] In a second aspect, the present application proposes a photovoltaic system, including: the wind resistance limiting device described in the above embodiments.

[0017] Further, the photovoltaic system further includes: a bracket, the bracket includes: an end bracket and an intermediate bracket, at least one intermediate bracket is arranged between the two end brackets, and the wind resistance limiting device is arranged between adjacent brackets.

[0018] Furthermore, the photovoltaic system further includes a wind resistance connection structure, which is connected to the photovoltaic module, and adjacent wind resistance connection structures are connected to the same wind resistance limiting device through wind cables.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a wind resistance limiting device according to an embodiment of the present application;

[0022] Figure 2 is another schematic diagram of a wind resistance limiting device according to an embodiment of the present application;

[0023] Figure 3 is an exploded schematic diagram of a wind resistance limiting device according to an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of a photovoltaic system according to an embodiment of the present application;

[0025] Figure 5 is another schematic diagram of a photovoltaic system according to an embodiment of the present application.

[0026] REFERENCE SIGNS:

[0027] Photovoltaic system 1000,

[0028] Wind resistance limiting device 100, photovoltaic module 200, cable 300, wind resistance connection structure 400, wind cable 500, end bracket 600, intermediate bracket 700,

[0029] Foundation column 10,

[0030] First sleeve 20, first cylinder 21, first arc plate 211, first limiting plate 22, reinforcing plate 23, bottom plate 24,

[0031] Second sleeve 30, second cylinder 31, second arc plate 311, second limiting plate 32, third limiting plate 33,

[0032] Connector 40, pull rod 41, limiting block 411, lifting ring 42. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawing descriptions are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above accompanying drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0035] Referring to "embodiments" in this application means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The occurrence of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0036] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0038] In the embodiments of this application, the same reference numerals represent the same components. And for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the accompanying drawings in the embodiments of this application, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0040] In the description of the present application, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through additional features therebetween.

[0041] In the description of the present application, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature.

[0042] The "plurality" appearing in the present application refers to two or more (including two).

[0043] In the related art, the prestressed flexible cable photovoltaic system is very beneficial to the rational utilization of land, the realization of land conservation and space utilization, and the improvement of land value because it can achieve high clearance and large-span crossing of the photovoltaic land field area. Therefore, the photovoltaic support will have a broad application prospect.

[0044] In order to cope with the wind-lifting effect, especially in extreme weather conditions, the photovoltaic system needs to be provided with a wind-resistant structure. However, the existing wind-resistant structures have the following technical problems:

[0045] 1) Only the connection structure of the vertical cables is used to make the overall photovoltaic support wind-resistant. There are no additional defensive measures and structures for sudden extreme wind-lifting effects, and no necessary measures are set for accidental states such as exceeding the design action value.

[0046] 2) The wind-resistant structures with relatively small stroke or hard limit cannot meet the requirements of large displacement and large deformation of the photovoltaic support, and have relatively high requirements for the foundation force of the wind-resistant structure. When the photovoltaic support is subjected to the wind-lifting effect, due to the relatively small allowable stroke of the limiting measures or no stroke at all, the generated acting force is directly transmitted to the foundation of the wind-resistant structure, which will cause its ground foundation. Therefore, the scale of the ground foundation needs to be set relatively large.

[0047] 3) Adopt elastic restraint measures with a small stroke or a certain linear stiffness as the wind-resistant structure, and restrain the vertical displacement of the photovoltaic support. When the photovoltaic support is subjected to the wind uplift effect, due to the wind-resistant structure with a certain binding force acting on the wind-resistant connection structure in the direction of the vertical cable, an additional force is generated on the wind-resistant connection structure, which will cause the wind-resistant connection structure to require additional strengthening, and the size of the wind-resistant structure itself needs to be set larger.

[0048] Based on this, the present application proposes a wind-resistant limiting device. On the premise of improving the wind-resistant effect of the photovoltaic system, the displacement of the wind-resistant limiting device is large, and the additional force generated by the displacement of the wind-resistant limiting device will not be transferred to the ground foundation, which is beneficial to the control of the size and scale of the ground foundation. Moreover, the wind-resistant limiting device will only generate a restraining effect when the displacement reaches the limit value. Therefore, there is no need to additionally strengthen the wind-resistant connection structure, and the structural size of the wind-resistant structure itself can also be designed smaller.

[0049] The following refers to Figures 1 - 5 Describe the wind-resistant limiting device 100 and the photovoltaic system 1000 according to the embodiments of the present application.

[0050] As Figure 1 、 Figure 2 and Figure 3 shown, the present application proposes a wind-resistant limiting device 100, including: a foundation column 10, a first sleeve 20, a second sleeve 30, and a connecting member 40.

[0051] Among them, the foundation column 10 is fixed to the foundation surface. One end of the first sleeve 20 is connected to the foundation column 10. The second sleeve 30 is at least one, and the second sleeve 30 is telescopically arranged in the first sleeve 20 and is adapted to extend from the other end of the first sleeve 20. The connecting member 40 is telescopically arranged in the second sleeve 30, and one end of the connecting member 40 extending out of the second sleeve 30 is used to connect the wind cable 500.

[0052] That is to say, the foundation column 10 can be used as the ground foundation of the wind-resistant limiting device 100 and is fixed on the foundation surface. The foundation surface can be different terrain grounds such as tidal flats, hills, and mountains based on the setting scenario of the photovoltaic system 1000. Above the foundation column 10, there are sequentially arranged the first sleeve 20, the second sleeve 30, and the connecting member 40, and the connecting member 40 is used to connect the wind cable 500.

[0053] Specifically, the photovoltaic system 1000 has a plurality of brackets arranged in an array. Defining the first direction as front and back, the second direction as left and right, and the third direction as up and down, among the plurality of brackets arranged in columns in the first direction, the brackets at the ends are defined as end brackets 600, and the brackets between the two ends are defined as intermediate brackets 700. Cables 300 (such as component cables, load-bearing cables, stabilizing cables, and stay cables, etc.) can be arranged above the brackets. The component cables generally extend along the front-back direction and are used to fix the photovoltaic modules 200. The load-bearing cables are used to bear the weight, and the stabilizing cables play a role in improving the structural stability. One end of the stay cable can be connected to one of the stabilizing cable, the component cable, and the load-bearing cable, and the other end of the stay cable can be connected to another one of the stabilizing cable, the component cable, and the load-bearing cable to form a wind-resistant connection structure 400. The wind-resistant connection structure 400 enables the photovoltaic brackets to have a certain wind-resistant performance. In order to further improve the wind-resistant performance of the photovoltaic brackets, the present application further provides a wind-resistant limiting device 100. The connecting member 40 of the wind-resistant limiting device 100 can be connected to the wind-resistant connection structure 400 through a wind cable 500 to further improve the wind-resistant performance of the photovoltaic brackets, especially the ability of the photovoltaic brackets to resist the wind-lifting effect in extreme weather conditions.

[0054] It should be noted that the connecting member 40 of the wind-resistant limiting device 100 is connected to the wind cable 500. The connecting member 40 is telescopically arranged in the second sleeve 30, and there can be several second sleeves 30 (the number of the second sleeves 30 can be one or more). The connecting member 40 and the second sleeve 30 are constructed as a nested telescopic structure (such as setting up telescoping), and the second sleeve 30 and the first sleeve 20 are constructed as a nested telescopic structure (such as setting up telescoping), so that the wind-resistant limiting device 100 can be constructed as a multi-section telescopic structure. Different numbers of second sleeves 30 or connecting members 40 with different lengths can be selected according to actual needs, so that the wind-resistant limiting device 100 can meet the limiting requirements of different sizes and different displacement magnitudes. In extreme weather conditions, due to the wind-lifting effect, telescopic displacements are generated between the connecting member 40, the second sleeve 30, and the first sleeve 20, and when moving to the end point of the displacement, the wind cable 500 is limited. Since the wind cable 500 is connected to the wind-resistant connection structure 400, the technical effect of resisting the wind-lifting effect can be achieved, and the probability of accidental damage to the photovoltaic modules 200 can be reduced.

[0055] That is to say, the present application further provides a wind resistance limiting device 100. The wind resistance limiting device 100 can cooperate with the existing wind resistance connection structure 400 of the photovoltaic system 1000 through a wind cable 500. In extreme weather or accidental situations, it can provide an additional limiting device for the photovoltaic system 1000 to improve the wind resistance performance of the photovoltaic system 1000, especially the ability to resist the wind-lifting effect, and reduce the probability of damage to the photovoltaic system 1000 under the action of extreme weather in the context of increasingly frequent extreme weather. At the same time, the multi-section telescopic structure design of the wind resistance limiting device 100 can select second sleeves 30 and connectors 40 of different lengths according to actual needs to meet the limiting requirements of different displacement amounts, so that the size structure of the wind resistance limiting device 100 itself is small, the space occupied on the foundation surface is small, and the displacement amount can also meet the wind resistance displacement requirements of the photovoltaic system 1000, that is, the requirements of large displacement and large deformation.

[0056] At the same time, in the design of the multi-section telescopic structure, only when the displacement of the wind resistance connection structure 400 caused by the wind-lifting effect exceeds the design allowable limit, the wind resistance limiting device 100 synchronously moves to the displacement limit position. At this time, the wind resistance limiting device 100 generates a binding force and resists the wind-lifting force, pulling the wind resistance connection structure 400 through the wind cable 500. Compared with the existing wind resistance structure, the additional force generated by the displacement will not all be transferred to the foundation column 10. Therefore, the foundation column 10 (i.e., the above-ground foundation) does not need to be set too large, and the scale of the foundation column 10 can be controlled to reduce the space occupied by the foundation column 10 on the foundation surface. When the wind resistance connection structure 400 does not move to the limit position, the wind resistance limiting device 100 will not generate a binding effect, so it will not generate additional stress on the wind resistance connection structure 400. After the wind resistance limiting device 100 of the present application is set for the photovoltaic system 1000, there is no need to additionally strengthen the wind resistance connection structure 400.

[0057] According to the wind resistance limiting device 100 of the embodiment of the present application, on the premise that it can improve the wind resistance performance of the photovoltaic system 1000, especially enabling it to have good resistance to the wind-lifting effect and cope with extreme weather, on the one hand, the wind resistance limiting device 100 is constructed as a multi-section telescopic structure, which can meet the wind resistance displacement requirements of large displacement and large deformation amount of the photovoltaic system 1000; on the other hand, when the wind resistance limiting device 100 does not move to the stroke limit position (the maximum extended position of the connector 40), it will not generate a binding effect, and the additional force after generating the binding effect will not all be transferred to the foundation column 10, so that the foundation column 10 does not need to be set too large, and the wind resistance connection structure 400 does not need to be additionally strengthened.

[0058] Combined with Figure 2 and Figure 3As shown, according to some embodiments of the present application, the connecting member 40 includes: a pull rod 41 and a sling 42. The cable 300 is adapted to pass through the sling 42, and the pull rod 41 is telescopically disposed in the second sleeve 30.

[0059] Specifically, the pull rod 41 has a certain length, and the pull rod 41 is telescopically disposed in the second sleeve 30 to move relative to the second sleeve 30. A sling 42 is provided at the free end of the pull rod 41. The sling 42 can be a circular ring structure or a quick-release connection structure and is connected to the guy cable 500, so that the pull rod 41 moves between the stroke limit position where the pull rod 41 extends out of the second sleeve 30 and other positions based on the acting force of the guy cable 500.

[0060] In this way, through the cooperation of the connecting member 40 and the second sleeve 30, the wind resistance limiting device 100 has a certain displacement adjustment amount, and the connection stability between the connecting member 40 and the guy cable 500 is higher, the force transmission between the guy cable 500 and the connecting member 40 is more stable, and the working stability and reliability of the wind resistance limiting device 100 are higher.

[0061] As Figure 3 shown, according to some embodiments of the present application, a limiting block 411 is provided on the pull rod 41. The limiting block 411 is located in the second sleeve 30, and the limiting block 411 is in limiting cooperation with the second sleeve 30.

[0062] Specifically, the limiting block 411 can be configured as a counterweight block to improve the cooperation stability between the pull rod 41 and the second sleeve 30. When the pull rod 41 is in the maximum extended position, the limiting block 411 can be in limiting cooperation with the second sleeve 30 to prevent the pull rod 41 from coming out of the second sleeve 30, and can also improve the connection stability and reliability between the second sleeve 30 and the connecting member 40.

[0063] According to some embodiments of the present application, the pull rod 41 and the sling 42 are configured as flexible members or rigid members.

[0064] That is to say, in some embodiments, both the pull rod 41 and the sling 42 are configured as rigid members, such as: a steel screw and a rigid circular ring structure at the head of the screw. In other embodiments, both the pull rod 41 and the sling 42 are configured as flexible members, such as: a steel wire rope.

[0065] As Figure 3 shown, according to some embodiments of the present application, the first sleeve 20 includes: a first cylinder body 21 and a first limiting plate 22 located at one end of the first cylinder body 21. The first limiting plate 22 is configured as an annular plate. The second sleeve 30 passes through the first limiting plate 22 and extends into the first cylinder body 21, and the other end of the first cylinder body 21 is connected to the foundation column 10.

[0066] Specifically, a bottom plate 24 is provided at the lower end of the first cylinder 21. The bottom plate 24 can be used to connect to the foundation column 10, and a first limit plate 22 can be provided at the top. The first limit plate 22 is formed as an annular plate, so that the second sleeve 30 can pass through the first limit plate 22 and extend into the first sleeve 20 to realize the telescoping of the wind-resistant limit device 100. When the second sleeve 30 is in the maximum extended position, the first limit plate 22 can push against and limit the second sleeve 30 to prevent the second sleeve 30 in the maximum extended position from slipping out of the first sleeve 20, thereby improving the connection stability and reliability between the first sleeve 20 and the second sleeve 30.

[0067] Combined Figure 2 with Figure 3 As shown, according to some embodiments of the present application, the first sleeve 20 further includes: a reinforcing plate 23, which is provided on the circumferential side of the first cylinder 21 and is connected to the foundation column 10.

[0068] Specifically, the reinforcing plate 23 is provided on the outer periphery of the first cylinder 21, and there can be multiple reinforcing plates 23. Multiple reinforcing plates 23 are all provided on the outer periphery of the first cylinder 21, and the lower side edges are directly connected to the foundation column 10, or the lower side edges are connected to the bottom plate 24, and the bottom plate 24 is further connected to the foundation column 10.

[0069] Thus, by providing the reinforcing plate 23, the structural strength of the first sleeve 20 can be improved, and the connection stability and reliability between the first sleeve 20 and the foundation column 10 can be made higher.

[0070] According to some embodiments of the present application, when there are multiple second sleeves 30, the multiple second sleeves 30 are sleeved in sequence, and the second sleeve 30 includes: a second cylinder 31 and second limit plates 32 and third limit plates 33 located at both ends of the second cylinder 31. Among two adjacent second sleeves 30, the second limit plate 32 of one second sleeve 30 is in limit cooperation with the third limit plate 33 of the other second sleeve 30, the second limit plate 32 of the second sleeve 30 connected to the connecting member 40 is in limit cooperation with the connecting member 40, and the third limit plate 33 of the second sleeve 30 connected to the first sleeve 20 is in limit cooperation with the first sleeve 20.

[0071] Exemplarily, in the embodiment where there is one second sleeve 30, the first limit plate 22 is in limit cooperation with the third limit plate 33, the second cylinder 31 passes through the first limit plate 22, and the second limit plate 32 is in limit cooperation with the limit block 411 of the connecting member 40 at the other end of the second cylinder 31. When the wind-resistant limit device 100 moves to the displacement limit position, the first limit plate 22 pushes against and limits the third limit plate 33, and the second limit plate 32 pushes against and limits the limit block 411.

[0072] In an embodiment where there are multiple second sleeves 30, for example, if there are two second sleeves 30, the two second sleeves 30 are defined as an upper sleeve and a lower sleeve respectively. The second cylinder body 31 of the lower sleeve penetrates through the first limiting plate 22, and the third limiting plate 33 of the lower sleeve is in limiting cooperation with the first limiting plate 22. The second limiting plate 32 of the lower sleeve is in abutting and limiting with the third limiting plate 33 of the upper sleeve, and the second cylinder body 31 of the upper sleeve penetrates through the second limiting plate 32 of the lower sleeve. The second limiting plate 32 of the upper sleeve is in abutting and limiting with the limiting block 411.

[0073] Thereby, the connecting member 40, the second sleeve 30, and the first sleeve 20 form a multi - section telescopic structure to meet the requirements of large displacement and large deformation of the photovoltaic system 1000 for wind resistance, and improve the wind resistance ability of the wind resistance limiting device 100, especially the ability to resist the wind - lifting effect.

[0074] As Figure 3 As shown, according to some embodiments of the present application, the first cylinder body 21 includes a plurality of first arc - shaped plates 211. The plurality of first arc - shaped plates 211 surround and define a first telescopic space through which the second sleeve 30 penetrates. The second cylinder body 31 includes a plurality of second arc - shaped plates 311. The plurality of second arc - shaped plates 311 surround and define a second telescopic space through which the connecting member 40 penetrates.

[0075] Thereby, the second sleeve 30 and the connecting rod achieve telescopic displacement within the first telescopic space, and the connecting rod can further achieve telescopic displacement within the second telescopic space, so that the telescopic amount of the wind resistance limiting device 100 can be adaptively adjusted to improve the wind resistance effect. At the same time, the first arc - shaped plates 211 can be multiple and are arranged around an axis, the second arc - shaped plates 311 can be multiple and are arranged around an axis. The second limiting plate 32 and the third limiting plate 33 are connected to any one of the plurality of second arc - shaped plates 311. The special second arc - shaped plate 311 and the second limiting plate 32, the third limiting plate 33 can be constructed as a plug - in fit or a snap - fit connection structure. The first limiting plate 22 and the bottom plate 24 are connected to one of the plurality of first arc - shaped plates 211, and the other first arc - shaped plates 211 and the bottom plate 24, the first limiting plate 22 can be constructed as a plug - in fit or a snap - fit connection structure.

[0076] In this way, not only can the material costs of the first sleeve 20 and the second sleeve 30 be reduced, but also the processing difficulty of the first sleeve 20 and the second sleeve 30 can be reduced, and the assembly difficulty between the first sleeve 20 and the second sleeve 30, and between the second sleeve 30 and the connecting member 40 can be reduced, improving the assembly efficiency.

[0077] It should be noted that when the wind resistance limiting device 100 moves to the displacement limit position, it refers to the relative position of the suspension ring 42 when the connecting member 40 moves relative to the second sleeve 30 to the maximum elongation position, and the second sleeve 30 moves relative to the first sleeve 20 to the maximum elongation position.

[0078] As Figure 4 and Figure 5 shown, the present application proposes a photovoltaic system 1000, including: the wind-resistant limiting device 100 in the above embodiments.

[0079] Specifically, the photovoltaic system 1000 further includes: a bracket, the bracket includes: an end bracket 600 and an intermediate bracket 700, at least one intermediate bracket 700 is arranged between two end brackets 600, and a wind-resistant limiting device 100 is arranged between adjacent brackets. The photovoltaic system 1000 further includes a wind-resistant connection structure 400, the wind-resistant connection structure 400 is connected to the photovoltaic module 200, and adjacent wind-resistant connection structures 400 are connected to the same wind-resistant limiting device 100 through a wind cable 500.

[0080] That is to say, the photovoltaic system 1000 has a plurality of brackets arranged in an array. Defining the first direction as front and back, the second direction as left and right, and the third direction as up and down. Among the plurality of brackets arranged in columns in the first direction, the brackets at the ends are defined as end brackets 600, and the brackets between the two ends are defined as intermediate brackets 700. Component cables, load-bearing cables, stabilizing cables, and stay cables can be arranged above the brackets. The component cables generally extend in the front-back direction and are used to fix the photovoltaic module 200. The load-bearing cables are used to bear the weight, and the stabilizing cables play a role in improving the structural stability. One end of the stay cable can be connected to one of the stabilizing cable, the component cable, and the load-bearing cable, and the other end of the stay cable can be connected to another one of the stabilizing cable, the component cable, and the load-bearing cable to form the wind-resistant connection structure 400. The wind-resistant connection structure 400 enables the photovoltaic bracket to have a certain wind-resistant performance. In order to further improve the wind-resistant performance of the photovoltaic bracket, the present application further sets the wind-resistant limiting device 100. The connecting piece 40 of the wind-resistant limiting device 100 can be connected to the wind-resistant connection structure 400 through the wind cable 500 to further improve the wind-resistant performance of the photovoltaic bracket, especially in extreme weather, the ability of the photovoltaic bracket to resist the wind-lifting effect.

[0081] Thus, on the one hand, the wind-resistant limiting device 100 is arranged between the end bracket 600 and the intermediate bracket 700, or between adjacent intermediate brackets 700. The wind-resistant limiting device 100 can further cooperate with the end bracket 600 and the intermediate bracket 700, which can further improve the wind-resistant ability of the photovoltaic system 1000. On the other hand, the same wind-resistant limiting device 100 can be connected to two wind-resistant connection structures 400 at the same time, which can reduce the arrangement quantity of the wind-resistant limiting device 100, reduce the cost, and make the installation difficulty of the wind-resistant limiting device 100 lower, which can improve the installation efficiency and improve the space occupation of the foundation surface.

[0082] The other components and operations of the wind resistance limiting device 100 and the photovoltaic system 1000 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described herein.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A wind-resistant limiting device (100), characterized in that, Comprising: A foundation column (10), which is fixed to the foundation surface; A first sleeve (20), one end of which is connected to the foundation column (10); A second sleeve (30), there is at least one second sleeve (30), which is telescopically arranged in the first sleeve (20) and is adapted to extend out from the other end of the first sleeve (20); A connecting piece (40), which is telescopically arranged in the second sleeve (30), and one end of the connecting piece (40) extending out of the second sleeve (30) is used to connect the wind cable (500).

2. The wind-resistant limit device (100) according to claim 1, characterized in that, The connecting piece (40) includes: a pull rod (41) and a lifting ring (42), the wind cable (500) is adapted to pass through the lifting ring (42), and the pull rod (41) is telescopically arranged in the second sleeve (30).

3. The wind-resistant limit device (100) according to claim 2, characterized in that, A limiting block (411) is arranged on the pull rod (41), the limiting block (411) is located inside the second sleeve (30), and the limiting block (411) is in limiting cooperation with the second sleeve (30).

4. The wind resistance limiting device (100) according to claim 2 or 3, characterized in that, The pull rod (41) and the lifting ring (42) are configured as flexible members or rigid members.

5. The wind-resistant limit device (100) according to claim 1, characterized in that, The first sleeve (20) includes: a first cylinder body (21) and a first limiting plate (22) located at one end of the first cylinder body (21), the first limiting plate (22) is configured as an annular plate, the second sleeve (30) passes through the first limiting plate (22) and extends into the first cylinder body (21), and the other end of the first cylinder body (21) is connected to the foundation column (10).

6. The wind resistance limiting device (100) according to claim 5, characterized in that, The first sleeve (20) further includes: a reinforcing plate (23), the reinforcing plate (23) is arranged on the peripheral side of the first cylinder body (21) and is connected to the foundation column (10).

7. The wind resistance limiting device (100) according to claim 5 or 6, characterized in that, The first cylinder body (21) includes a plurality of first arc-shaped plates (211), and the plurality of first arc-shaped plates (211) surround and define a first telescopic space through which the second sleeve (30) passes.

8. The wind-resistant limit device (100) according to claim 1, characterized in that, When there are multiple second sleeves (30), the multiple second sleeves (30) are sleeved in sequence, and the second sleeve (30) includes: a second cylinder body (31) and second limiting plates (32) and third limiting plates (33) located at both ends of the second cylinder body (31). Among two adjacent second sleeves (30), the second limiting plate (32) of one second sleeve (30) is in limiting cooperation with the third limiting plate (33) of the other second sleeve (30), the second limiting plate (32) of the second sleeve (30) connected to the connecting piece (40) is in limiting cooperation with the connecting piece (40), and the third limiting plate (33) of the second sleeve (30) connected to the first sleeve (20) is in limiting cooperation with the first sleeve (20).

9. The wind-resistant limiting device (100) according to claim 8, characterized in that, The second cylinder body (31) includes a plurality of second arc-shaped plates (311), and the plurality of second arc-shaped plates (311) surround and define a second telescopic space through which the connecting piece (40) passes.

10. A photovoltaic system (1000), characterized in that, Comprising: The wind resistance limiting device (100) according to any one of claims 1-9.

11. The photovoltaic system (1000) according to claim 10, characterized in that, The photovoltaic system (1000) further includes: a bracket, the bracket includes: end brackets (600) and intermediate brackets (700), at least one of the intermediate brackets (700) is disposed between the two end brackets (600), and the wind resistance limiting device (100) is disposed between adjacent brackets.

12. The photovoltaic system (1000) according to claim 11, wherein, The photovoltaic system (1000) further includes a wind resistance connection structure (400), the wind resistance connection structure (400) is connected to the photovoltaic module (200), and adjacent wind resistance connection structures (400) are connected to the same wind resistance limiting device (100) through a wind cable (500).

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