Photovoltaic system and its flexible support

Abstract

The present application relates to a photovoltaic and flexible support thereof, wherein the flexible support comprises at least two support members spaced apart along a first direction, a component cable and a stabilizing cable along the first direction are installed between two adjacent support members, wherein the component cable forms a bearing surface; a node member connected to the stabilizing cable and the component cable; a semi-rigid reverse arch cable, wherein the first end of the semi-rigid reverse arch cable has a rigid portion connected to the node member, and the second end of the semi-rigid reverse arch cable is connected to the support member. The rigid portion of the semi-rigid reverse arch cable and the node member can be relatively movably connected, and the "node connection component" formed by the two can provide rigidity on the one hand, and obtain a rigid body with small deviations of rigidity center and mass center on the other hand, so it is not easy to flip over, so that it can resist wind force while also having high structural stability.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic system and a flexible bracket thereof. Background Art

[0002] Due to the restrictions of site conditions in different scenarios, the span requirements for flexible brackets used to support photovoltaic modules are constantly increasing. The increase in the span of the flexible bracket will increase the deflection of the cable, which may cause the overall instability of the node under the action of wind load, resulting in serious losses such as hidden cracks, falling off, and even collapse of the node of the photovoltaic module.

[0003] The prior art generally uses a large number of connecting rods and cross-arranged cables to achieve the purpose of increasing stability. The implementation of these methods is not only cumbersome in construction and high in cost, but also generally has poor resistance to wind suction.

[0004] The prior art also uses a multi-layer cable structure to resist wind pressure and wind suction at the same time. At this time, node parts are usually used to connect the layers of cables. However, since there are multiple nodes between the node parts and different cables, the construction is cumbersome and inconvenient for subsequent maintenance. At the same time, when the actual vertical wind load is often not perpendicular to the ground, the node parts have stress risks. In addition, when the photovoltaic module is offset by crosswind, it is easy to cause the node parts to be damaged due to excessive shear force. Summary of the invention

[0005] Based on this, it is necessary to provide a flexible bracket that can resist wind force while also having high structural stability. A photovoltaic system having such a flexible bracket is also proposed.

[0006] A flexible bracket comprises: a support member, wherein at least two of the support members are arranged at intervals along a first direction, and a component cable and a stabilizing cable along the first direction are installed between two adjacent support members, wherein the component cable forms a bearing surface; a node member, wherein the node member is connected to the stabilizing cable and the component cable at the same time; and a semi-rigid reverse arch cable, wherein the first end of the semi-rigid reverse arch cable has a rigid portion connected to the node member, and the second end of the semi-rigid reverse arch cable is connected to the support member.

[0007] In some embodiments, the rigid portion and the node member are connected in a relatively movable manner.

[0008] In some embodiments, the rigid portion and the node member are relatively movable at least in a second direction, and the second direction is perpendicular to the first direction and perpendicular to the height direction of the support member.

[0009] In some embodiments, the rigid portion and the node member are relatively movable at least in a height direction of the support member.

[0010] In some embodiments, the semi-rigid anti-arch cable includes the rigid portion and a flexible cable connected to the rigid portion, wherein the flexible cable is connected to the support member.

[0011] In some embodiments, the rigid portion and the node member are connected to each other in a relatively movable manner by means of a spherical pair.

[0012] In some embodiments, the rigid portion is configured to be adjustable in length.

[0013] In some embodiments, the rigid portion includes a first connecting member and a second connecting member forming a screw fitting pair, the first connecting member is connected to the node member, and the second connecting member is used to connect to the support member.

[0014] In some embodiments, the first connecting member includes a sleeve and a ball joint fitting provided at the head end of the sleeve, the inner cavity of the sleeve includes a threaded hole section, and the ball joint fitting and the node member form a spherical fitting pair; the second connecting member includes a screw rod that cooperates with the threaded hole section, wherein a limit member is also provided on the screw rod, and the limit member is configured to prevent the screw rod from detaching from the sleeve.

[0015] In some embodiments, the limit member is located on a side of the threaded hole segment close to the node member, and in the radial direction of the sleeve, the size of the limit member is larger than the inner diameter of the threaded hole segment; or, a blocking structure for axially blocking the limit member is provided in the inner cavity of the sleeve.

[0016] In some embodiments, in the axial direction of the sleeve, the ball hinge fitting is detachably disposed at the head end of the sleeve, the threaded hole section is disposed at the tail end of the sleeve, and the limiter is detachably disposed at the screw rod.

[0017] In some embodiments, the rigid portion includes a first part movably connected and a second part movably connected to the first part, the first part is connected to the node member, and the second part is connected to the support member.

[0018] In some embodiments, the node member is mounted on the stabilizing cable in an adjustable manner.

[0019] In some embodiments, the stabilizing cables are frictionally coupled to the node members.

[0020] In some embodiments, the node member is provided with a through hole, the stabilizing cable is passed through the through hole, and the outer diameter of the stabilizing cable matches the inner hole of the through hole.

[0021] In some embodiments, the flexible support also includes a truss connected to the node member, and part of the truss is connected to the component cable; along the second direction, adjacent node members are interconnected by at least one truss, and the second direction is perpendicular to the first direction and perpendicular to the height direction of the support member.

[0022] In some embodiments, along the first direction, the node members and the semi-rigid anti-arch cable are provided at both ends of the stabilizing cable, and the middle section of the stabilizing cable is connected to the component cable via a supporting node.

[0023] In some embodiments, the length of the portion of the stabilizing cable located between the node member and the supporting member is L1, and the total length of the stabilizing cable is L2, wherein the range of L1 / L2 is 1 / 5-1 / 4.

[0024] In some embodiments, in the height direction of the support member, the first end of the semi-rigid inverse arch cable is higher than the second end of the semi-rigid inverse arch cable; and the stabilizing cable is configured as an arch shape opening upward.

[0025] A photovoltaic system is also proposed, comprising any of the flexible brackets described above; and a plurality of photovoltaic components, wherein the photovoltaic components are mounted on the bearing surface.

[0026] In the present application, the rigid part of the semi-rigid anti-arch cable can be relatively movably connected to the node member. The "node connection component" formed by the two can provide rigidity and has high structural stability on the one hand; on the other hand, compared with the node connection component formed by relatively long trusses and node members in traditional technologies, the "node connection component" of the present application omits the longer trusses to obtain a rigid body with small deviations of the center of rigidity and the center of mass, so it is not easy to flip over, so that it can resist wind force while also having high structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a structural principle diagram of a flexible bracket according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1A front view of a flexible bracket;

[0031] Figure 3 for Figure 1 A left view of the flexible bracket;

[0032] Figure 4 for Figure 2 Sectional view along AA direction;

[0033] Figure 5 for Figure 1 A top view of a flexible support;

[0034] Figure 6 A schematic diagram of the structure of a flexible bracket according to an embodiment of the present invention;

[0035] Figure 7 for Figure 6 A magnified view of part B;

[0036] Figure 8 It is a schematic diagram of the force of the flexible bracket of the embodiment of the present invention when encountering crosswind;

[0037] Fig. 9 It is a schematic diagram of the flexible bracket bearing wind pressure according to an embodiment of the present invention;

[0038] Fig.10 It is a schematic diagram of a case where the semi-rigid anti-arch cable of the flexible support of an embodiment of the present invention is too loose;

[0039] Fig.11 A schematic diagram of a component cable of a flexible support according to an embodiment of the present invention being deformed due to wind suction;

[0040] Fig.12 It is a schematic diagram of assembling the rigid part and the node member of the semi-rigid anti-arch cable according to an embodiment of the present invention;

[0041] Fig.13 It is an assembly diagram of the rigid part of the semi-rigid anti-arch cable and the seat body of the node member according to an embodiment of the present invention;

[0042] Fig.14 for Fig.13 an exploded view of the assembly shown;

[0043] Fig.15 for Fig.13 The schematic cross-sectional view of the assembly shown is along the butt joint direction between the rigid part and the node member.

[0044] The corresponding numbers of the relevant components in the figure are as follows:

[0045] 1. Flexible bracket; 10. Support member; 110. Column; 120. Crossbeam; 130. Stay cable; 20. Component cable; 210. Bearing surface; 220. First sub-cable; 230. Second sub-cable; 30. Stabilizing cable; 40. Semi-rigid anti-arch cable; 401. First end; 402. Second end; 410. Rigid part; 411. First connecting member; 4111. Outer spherical surface; 4112. Ball joint fitting; 4113. Sleeve; 4114. Inner cavity; 4115. Threaded hole section; 4116. Ball joint end cover; 4117. Screw; 4118 , first flange; 4119, second flange; 412, second connecting piece; 4121, screw; 4122, pin hole; 4123, limit piece; 413, cable plate; 414, pin shaft; 415, cotter pin; 420, flexible cable; 50, node piece; 510, seat; 511, through hole; 512, first seat; 513, second seat; 514, groove; 520, inner spherical surface; 530, mounting position; 531, ear plate; 532, connecting hole; 60, truss; 70, supporting node; 2, photovoltaic module; 201, front. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0047] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] The embodiments of the present application provide a flexible bracket, wherein each embodiment is described by taking the flexible bracket carrying photovoltaic components to form a photovoltaic system as an example. However, it can be understood that the flexible bracket of the present application is not limited to installing photovoltaic components.

[0049] Please refer to Figures 1 to 5 ,in Figure 1 This is a schematic diagram of the structure of a flexible bracket 1 according to some embodiments of the present application; Figure 2 for Figure 1 A front view of the flexible support 1; Figure 3 for Figure 1 A left view of the flexible support 1; Figure 4 for Figure 1Sectional view along AA direction; Figure 5 for Figure 1 A top view of the flexible support 1.

[0050] like Figure 1 and Figure 2 As shown, the present application provides a flexible bracket 1. The flexible bracket 1 includes a support member 10, a component cable 20 and a stabilizing cable 30, a semi-rigid anti-arch cable 40 and a node member 50. At least two support members 10 are arranged at intervals along a first direction X, and component cables 20 and stabilizing cables 30 along the first direction X are installed between two adjacent support members 10, wherein the component cables 20 form a bearing surface 210 (see Figure 3 ).like Figure 2 As shown, the first end 401 of the semi-rigid reverse arch cable 40 is connected to the node member 50, and the second end 402 of the semi-rigid reverse arch cable 40 is connected to the support member 10. The first end 401 is connected to the node member 50, which can be fixedly connected or relatively movable; and the two can be directly connected or connected through an intermediate element. The node member 50 is also connected to the component cable 20 and the stabilizing cable 30. A plurality of photovoltaic components 2 are installed on the bearing surface 210 of the flexible bracket 1 to form a photovoltaic system, and the plurality of photovoltaic components 2 are arranged on the bearing surface 210 and arranged in rows along the first direction X.

[0051] At least two support members 10 are arranged at intervals along the first direction X. Figures 1 to 3 Only two support members 10 are shown in the figure for example. In specific applications, the first direction X can be an east-west direction, a north-south direction or other directions. Further, in the second direction Y, the photovoltaic components 2 can be arranged in multiple rows. Figure 1 As shown in , the second direction Y intersects the first direction X and is perpendicular to the height direction Z of the support member 10 .

[0052] For example, Figure 1 As shown, each support member 10 includes at least two columns 110 spaced apart along the second direction Y, and a crossbeam 120 connecting the two columns 110. The two ends of the component cable 20 and the stabilizing cable 30 are respectively connected to the two crossbeams 120. The length of the crossbeam 120 can be set to enable multiple component cables 20 and stabilizing cables 30 to be set in the second direction Y, so that multiple rows of photovoltaic components 2 can be set in the second direction Y. Figure 1 In the example, two rows of photovoltaic modules 2 are shown. Furthermore, in this example, the column 110 of each support member 10 is also connected to a cable 130. The cable 130 is used to connect to the installation base (such as the ground) of the flexible bracket 1, thereby increasing the stability of the support member 10. Preferably, the column 110 and the beam 120 are made of steel. Preferably, the cable 130 is made of a steel wire rope with a certain flexibility and a long service life.

[0053] The component cable 20 is disposed between two adjacent support members 10 along the first direction X. For example, both ends of the component cable 20 are connected to the two cross beams 120, respectively. Figure 6 and Figure 7 ,in Figure 6 It is a schematic diagram of the structure of the flexible bracket 1 of some embodiments of the present invention; Figure 7 for Figure 6 This is an enlarged view of part B. Figure 3 and Figure 7 As shown, the component cable 20 includes a first sub-cable 220 and a second sub-cable 230, which are arranged in the second direction Y, and have different heights in the height direction of the support member 10. In a specific embodiment, both ends of the first sub-cable 220 are connected to the upper part of the two cross beams 120, and both ends of the second sub-cable 230 are connected to the lower part of the two cross beams 120, so that the first sub-cable 220 and the second sub-cable 230 have different heights. Preferably, the component cable 20 is a steel wire rope with a certain flexibility.

[0054] Reference Figure 1 , Figure 3 and Figure 7 The first sub-cable 220 and the second sub-cable 230 have different heights so that the bearing surface 210 has a certain angle relative to the horizontal plane, so that the photovoltaic component 2 has a certain angle relative to the horizontal plane, so that the front side 201 (light-receiving surface) of the photovoltaic component 2 can better receive sunlight.

[0055] Specifically, Figure 3 As shown, the two ends of the photovoltaic module 2 have different heights in the second direction Y. When the first direction X is the east-west direction, the two ends of the photovoltaic module 2 have different heights in the north-south direction, so that the front 201 of the photovoltaic module 2 can face the sun, thereby better receiving sunlight.

[0056] In this application, the term "wind pressure" refers to the wind load acting on the front side 201 of the photovoltaic module 2, which is in a vertically downward direction. At this time, the load will act on the module cable 20 in the form of a node load, and then be transferred to the stabilizing cable 30 through the node member 50. In addition, the load borne by the front side 201 of the photovoltaic module 2 is not limited to the wind load, for example, it also includes snow load, dust load, etc., and the stabilizing cable 30 plays the same role at this time. The term "wind suction" refers to the wind load acting on the back side of the photovoltaic module 2, which is in a vertically upward direction. At this time, the node load is transferred to the module cable 20 and the semi-rigid anti-arch cable 40 through the node member 50.

[0057] like Figure 1 and Figure 2As shown, the stabilizing cable 30 is disposed between two adjacent supporting members 10 along the first direction X. The stabilizing cable 30 is used to provide tension when subjected to wind pressure to maintain the stability of the component cable 20. Preferably, the stabilizing cable 30 is a steel wire cable with a certain flexibility. Exemplarily, the two ends of the stabilizing cable 30 are respectively connected to the cross beams 120 of the two supporting members 10.

[0058] The function of the semi-rigid anti-arch cable 40 is to provide tension when the node member 50 is subjected to wind suction, so as to prevent the component cable 20 from deforming upward and causing damage to the photovoltaic component 2. By providing the stabilizing cable 30 and the semi-rigid anti-arch cable 40, the flexible bracket 1 of the present application has a strong ability to resist wind pressure and wind suction, and can effectively prevent the instability of the structure, so as to adapt to the design and application requirements of the large-span flexible bracket 1.

[0059] For example, refer to Figure 2 In the height direction of the support member 10, the first end 401 of the semi-rigid reverse arch cable 40 is higher than the second end 402 of the semi-rigid reverse arch cable 40; the stabilizing cable 30 is configured as an arch with an opening upward. Therefore, the stabilizing cable 30 can provide tension when it is subjected to wind pressure; the semi-rigid reverse arch cable 40 is arranged obliquely downward, so it can provide tension when the node member 50 is subjected to vertical upward wind suction.

[0060] Reference Figure 1 , Figure 6 and Figure 7 , the node member 50 connects the stabilizing cable 30, the semi-rigid reverse arch cable 40 and the component cable 20 to form a relatively stable support system. The node member 50 can be connected to the stabilizing cable 30, the semi-rigid reverse arch cable 40 and the component cable 20 directly or through the truss 60, and its specific structural form is not limited. For example, the node member 50 can have a plurality of connection positions distributed in a triangular shape, which are respectively used to connect the stabilizing cable 30, the semi-rigid reverse arch cable 40 and the first sub-cable 220 and the second sub-cable 230 in the component cable 20. For example, the connection position can be directly connected to the stabilizing cable 30 or other cables, or connected to the stabilizing cable 30 or other cables through the truss.

[0061] Reference Figure 1 , Figure 7 , the first end 401 of the semi-rigid reverse arch cable 40 has a rigid portion 410 connected to the node member 50, and the second end 402 of the semi-rigid reverse arch cable 40 is connected to the support member 10. In the present application, semi-rigid refers to a rigid + flexible hybrid structure. For example, the semi-rigid reverse arch cable 40 may include a rigid portion 410 and a flexible cable 420 connected to each other, thereby forming a semi-rigid structure. For another example, the semi-rigid reverse arch cable 40 may include a flexible cable 420, and a partial area of ​​the flexible cable 420 is constructed to be coated with a rigid portion 410.

[0062] In the present application, the first end 401 of the semi-rigid anti-arch cable 40 of the flexible bracket 1 is configured to have a rigid portion 410, which is connected to the node member 50 through the rigid portion 410. In this way, the "node connection component" composed of the rigid portion 410 of the semi-rigid anti-arch cable 40 and the node member 50 can provide rigidity, which is conducive to structural stability.

[0063] In addition, in the related art, the anti-arch cable is connected to the node member through a truss, and the truss is fixed to the node member so that the two form a truss. This truss is a rigid body, and there is a first deviation between its center of mass and rigid center. Since the truss is usually long, when a crosswind occurs in actual application, it is easy for the center of mass to rotate around the rigid center, that is, the truss has a tendency to flip. In the present application, for the entire semi-rigid anti-arch cable 40, the semi-rigid anti-arch cable 40 is directly connected to the node member 50, and there is no need to set a longer truss 60 to connect the two. The "node connection component" formed by the rigid part 410 directly connected to the node member 50 is also a rigid body, but the present application obtains a rigid body with a small deviation between the center of rigidity and the center of mass by omitting the longer truss, that is, the second deviation of the center of mass and the center of rigidity of the rigid body of the present application is less than the above-mentioned first deviation, so the flexible bracket 1 of the present application can cope with larger crosswinds and is more stable than the structure of the related art. In addition, in the present application, the truss 60, the stabilizing cable 30 and the semi-rigid anti-arch cable 40 are all installed to the node member 50. They are installed at the same node. Compared with the related art in which both ends of the anti-arch cable are connected to the support member, the cable length of the anti-arch cable and the number of node members can be reduced. Under the premise of meeting the load-bearing requirements, it not only saves the cost of the cable and the node member 50, but also simplifies the installation steps.

[0064] Reference Figure 1 , Figure 7 In some embodiments, the rigid portion 410 of the semi-rigid anti-arch cable 40 is relatively movable to the node member 50. The rigid portion 410 and the node member 50 are relatively movable, including sliding along a single or multiple directions, or rotating along a single or multiple directions. In the present application, the rigid portion 410 of the semi-rigid anti-arch cable 40 of the flexible bracket 1 is relatively movable to the node member 50. In this way, the "node connection component" composed of the rigid portion 410 of the semi-rigid anti-arch cable 40 itself and the node member 50 can provide rigidity on the one hand, and can deform to adapt to changes in wind loads on the other hand, thereby avoiding stress concentration and shear damage of the node member 50.

[0065] Specifically, refer to Figure 8 , Figure 8 It is a schematic diagram of the force on the flexible bracket 1 of the present application when encountering crosswind.

[0066] When the flexible bracket 1 is in use, under normal circumstances, the photovoltaic assembly 2 is only subjected to wind pressure or wind suction. When the photovoltaic assembly 2 is subjected to wind suction, the tension borne by the anti-arch cable is located in a plane C, which is a vertical plane and parallel to the first direction X. Figure 8 The midplane C is perpendicular to the plane of the drawing.

[0067] However, when faced with Figure 8 When the crosswind F is shown, the crosswind F refers to the wind in the horizontal direction, and its direction can be along the direction of the present application. Figure 1 In the second direction Y, the photovoltaic module 2 will be offset along the first direction X and the second direction Y, such as Figure 8 In the embodiment, the photovoltaic assembly 2 is shifted from position I to position II, resulting in the semi-rigid anti-arch cable 40 being subjected to a tensile force outside the plane C.

[0068] When the flexible bracket 1 of the embodiment of the present application encounters a crosswind along the second direction Y, refer to Figure 6 and Figure 7 Since the rigid part 410 and the node member 50 can move relatively, the node member 50 also moves relative to the rigid part 410 when moving with the photovoltaic assembly 2, thereby avoiding shear force between the node member 50 and the rigid part 410, and then avoiding damage to the node member 50.

[0069] In the above embodiment, the direction of the crosswind F is taken as an example to illustrate. However, it should be recognized that the direction of the crosswind F may be other directions, for example, Figure 8 , the direction of the crosswind F forms an acute angle with the second direction Y, such as diagonally upward along the horizontal direction. At this time, the rigid part 410 and the node member 50 can be relatively movably connected, and the component force of the crosswind F in the second direction Y will cause the photovoltaic module 2 to be Figure 8 The position I in the figure is shifted to the position II. At this time, the node member 50 moves with the photovoltaic assembly 2 and also moves relative to the rigid part 410, thereby avoiding shear force between the node member 50 and the rigid part 410, and then avoiding damage to the node member 50.

[0070] In addition, as mentioned above, the present application obtains a rigid body with small deviations between the center of rigidity and the center of mass by omitting the longer trusses, that is, the second deviation between the center of mass and the center of rigidity of the rigid body of the present application is smaller than the first deviation mentioned above, so the flexible bracket 1 of the present application can cope with larger crosswinds and is more stable than the structure of the related technology; and, even if the center of mass rotates around the center of rigidity, the rigid part 410 can move relative to the node member 50 and can adapt to such rotation, thereby preventing the node member 50 from being easily damaged.

[0071] In addition, if Figure 1As shown, the two ends of the semi-rigid reverse arch cable 40 are connected to the node member 50 and the support member 10 respectively. In this way, the middle part of the semi-rigid reverse arch cable 40 is not connected to other cables or support members, and the semi-rigid reverse arch cable 40 can be set only at the head and tail of the stabilizing cable 30, so that the length of the semi-rigid reverse arch cable 40 is shorter, and the cable cost is reduced under the premise of ensuring stability. In the specific setting, the node member 50 is set close to the support member 10, that is, the head or tail of the stabilizing cable 30, and the semi-rigid reverse arch cable 40 does not need to extend from one support member 10 to another adjacent support member 10, and the length is shorter.

[0072] In some embodiments, reference Figure 2 , the length of the portion of the stabilizing cable 30 between the node member 50 and the support member 10 is L1, and the total length of the stabilizing cable 30 is L2, wherein the range of L1 / L2 is 1 / 5-1 / 4. In the present application, the total length L2 of the stabilizing cable 30 refers to the length of the stabilizing cable 30 between two adjacent support members 10 in the first direction X.

[0073] The length L1 of the stabilizing cable 30 between the node member 50 and the support member 10 is related to the position of the node member 50 on the stabilizing cable 30. L1 / L2 can also be called the span of the node member 50 on the stabilizing cable 30, that is, the span of the node member 50 on the stabilizing cable 30 is 1 / 5-1 / 4.

[0074] Reference Figure 2 From the head or tail toward the middle of the stabilizing cable 30, the internal stress of the stabilizing cable 30 tends to decrease. By setting the span of the node member 50 on the stabilizing cable 30 to 1 / 5-1 / 4, it is possible to ensure support for the middle section of the stabilizing cable 30 while avoiding excessive length of the semi-rigid anti-arch cable 40.

[0075] According to some embodiments of the present application, referring to Figure 6 and Figure 7 , the rigid part 410 and the node member 50 can move relative to each other at least in the second direction Y, the second direction Y is perpendicular to the first direction X, and the second direction Y is perpendicular to the height direction Z of the support member 10. For example, the rigid part 410 and the node member 50 can slide or rotate relative to each other in the second direction Y. For example, the first direction X is the east-west direction, and the second direction Y is the north-south direction.

[0076] When the flexible bracket 1 is in use, the plurality of photovoltaic modules 2 are arranged in a row along the first direction X and arranged in multiple rows along the second direction Y. Generally, the direction of the crosswind is along the second direction Y. In this way, the flexible bracket 1 can still maintain good stability even when encountering such a crosswind during use.

[0077] According to some embodiments of the present application, referring to Figure 6 and Figure 7, the rigid part 410 and the node member 50 can move relative to each other at least in the height direction Z of the support member 10. Figure 8 When the crosswind F encountered by the flexible bracket 1 during use has a component force in the height direction Z of the support member 10, the rigid part 410 and the node member 50 can move relatively in the height direction Z of the support member 10, avoiding shear force between the node member 50 and the rigid part 410, and then avoiding damage to the node member 50. Preferably, the rigid part 410 and the node member 50 are configured to be relatively movable in the second direction Y, and relatively movable in the first direction X. For example, the rigid part 410 can be configured so that the connection with the node member 50 is relatively movable in the second direction Y, and the connection is relatively movable in the first direction X relative to the node member 50. In this way, when the flexible bracket 1 encounters a crosswind along the first direction X or the second direction Y during use, it can maintain good stability.

[0078] According to some embodiments of the present application, referring to Figure 7 The rigid part 410 and the node member 50 are matched with a spherical pair so as to be able to move relative to each other. For example, one of the rigid part and the node member is provided with an outer spherical surface, and the other of the two is provided with an inner spherical surface, and the outer spherical surface and the inner spherical surface are matched to form a spherical pair.

[0079] The rigid part 410 and the node member 50 are matched with a spherical pair, and the two can move relative to each other in any direction including the first direction X, the second direction Y and the height direction Z of the support member 10. Therefore, the flexible bracket 1 can resist crosswinds in any direction. When installing the flexible bracket 1, it is only necessary to consider how to maximize the lighting of the photovoltaic module 2, without considering the direction of the crosswind in the environment, thereby improving the convenience of using the flexible bracket 1.

[0080] According to some embodiments of the present application, referring to Figure 1 , Figure 7 The semi-rigid anti-arch cable 40 includes a rigid part 410 and a flexible cable 420 connected to the rigid part 410. The rigid part 410 is movably connected to the node member 50, and the flexible cable 420 is connected to the support member 10. The flexible cable 420 and the rigid part 410 can be connected by a fixed structure or bonded by a rigid high-strength adhesive. Preferably, the flexible cable 420 is a steel wire with a certain flexibility.

[0081] The rigid part 410 is connected to the flexible cable 420 to form a semi-rigid structure, wherein the rigid part 410 is connected to the node member 50 to form a rigid body to support the flexible cable 420, and the rigid part 410 and the node member 50 can move relative to each other, and the node member 50 also moves relative to the rigid part 410 when moving with the photovoltaic assembly 2, thereby avoiding shear force with the rigid part 410, and then avoiding damage to the node member 50. In addition, the rigid part 410 is connected to the flexible cable 420 to form a semi-rigid structure, and during preparation, it can be obtained based on the existing flexible cable, and there is no need to prepare non-standard flexible cables, which is conducive to reducing costs. The rigid part 410 and the flexible cable 420 are fixedly connected together, and the specific method is not limited. Exemplarily, the rigid part 410 can be connected to the flexible cable 420 through an anchor.

[0082] As mentioned above, the rigid part 410 of the rigid anti-arch cable itself and the node member 50 together constitute a "node connection component", and the rigid part 410 can move relative to the node member 50, so that the "node connection component" can provide rigidity on the one hand, and can adapt to the change of wind load and deform on the other hand, thereby avoiding stress concentration and shear failure of the node member 50. In addition, the deviation between the center of mass and the center of rigidity of the node connection component is small, and the structure is stable.

[0083] In addition, refer to Fig. 9 , Fig. 9 FIG. 1 is a schematic diagram of the flexible bracket 1 of an embodiment of the present invention bearing wind pressure. Fig. 9 As shown, the direction of wind suction is usually vertically upward, that is, perpendicular to the bottom surface. However, in actual application, the direction of wind suction is often not perpendicular to the ground. At this time, since the rigid part 410 and the node member 50 are matched with a spherical pair, the node member 50 can adjust its position according to the wind direction to prevent the node member 50 from being easily damaged due to shear force.

[0084] Reference Fig.10 and Fig.11 , Fig.10 This is a schematic diagram of a case where the semi-rigid anti-arch cable 40 of the flexible support 1 of an embodiment of the present invention is too loose; Fig.11 It is a schematic diagram of the deformation of the component cable 20 of the flexible support 1 according to an embodiment of the present invention due to wind suction.

[0085] The semi-rigid anti-arch cable 40 is used to provide tension when the flexible support 1 is subjected to wind suction, so as to prevent the module cable 20 from deforming upward and causing damage to the photovoltaic module 2. Therefore, it is very important to determine whether the semi-rigid anti-arch cable 40 is properly tight. However, the semi-rigid anti-arch cable 40 is installed under normal conditions where the node member 50 is neither subjected to wind pressure nor wind suction. If it is too loose, it will cause Fig.11 The deformation shown will affect the life of the node member 50 when it is too tight.

[0086] In view of the above problems, the present application provides a solution for adjusting the tightness of a semi-rigid anti-arch cable 40. Specifically, referring to Figure 7 , the rigid part 410 is configured to be adjustable in length. The rigid part of the semi-rigid reverse arch cable 40 itself is configured to be adjustable in length, so that the tightness of the semi-rigid reverse arch cable 40 can be adjusted. For example, the rigid part 410 includes a telescopic part and a fixed part, such as the telescopic part can be a telescopic tube, and the fixed part is a buckle mechanism for limiting the telescopic tube, thereby achieving the purpose of length adjustment.

[0087] By making the length of the rigid portion 410 adjustable, the tightness of the semi-rigid anti-arch cable 40 can be tested after installation, and the length of the rigid portion 410 can be expanded as needed to adapt to changing environmental requirements and prevent the semi-rigid anti-arch cable 40 from being too loose and losing its protective ability under wind suction.

[0088] In addition, please refer to Figure 8 When encountering a crosswind along the second direction Y, the wind force borne by each photovoltaic module 2 in the second direction Y is different, and the displacement will be different. At this time, the length of each rigid anti-arch cable can be adjusted individually to better adapt to the above-mentioned working conditions with different displacements and ensure the stability of the bracket structure.

[0089] According to some embodiments of the present application, referring to Fig.12 ,in Fig.12 FIG. 4 is a schematic diagram of assembling the rigid part 410 and the node member 50 of the semi-rigid anti-arch cable 40 according to an embodiment of the present invention. Fig.12 As shown, the node member 50 includes a seat body 510. A plurality of trusses 60 are connected to the seat body 510. The plurality of trusses 60 are respectively used to connect the component cables 20 or to connect with adjacent node members 50. The seat body 510 is connected to the stabilizing cable 30 and to the semi-rigid anti-arch cable 40. In other embodiments, the shape of the seat body 510 can be directly set so that the seat body 510 can be connected to the component cable 20, so that there is no need to set up a truss separately.

[0090] According to some embodiments of the present application, referring to Figures 13 to 15 ,in Fig.13 It is an assembly diagram of the rigid portion 410 of the semi-rigid anti-arch cable 40 and the seat body 510 of the node member 50 according to an embodiment of the present invention; Fig.14 for Fig.13 an exploded view of the assembly shown; Fig.15 for Fig.13 The illustrated assembly is a schematic cross-sectional view of the assembly along the butting direction between the rigid portion 410 and the node member 50 .

[0091] In some embodiments, reference Fig.13 and Fig.14For easy assembly, the rigid part 410 includes a detachably connected first connector 411 and a second connector 412, wherein the first connector 411 is movably connected to the node member 50, and the second connector 412 is connected to the cable plate 413, and the cable plate 413 can be connected to the flexible cable 420 through an anchor (not shown). Specifically, the second connector 412 and the cable plate 413 are respectively provided with pin holes 4122, and the two are fixedly or movably connected through a pin shaft 414 and a cotter pin 415.

[0092] In some embodiments, the rigid part 410 and the node member 50 are matched with a spherical pair so as to be able to move relative to each other. Fig.15 As shown, one of the rigid part 410 and the node member 50 is provided with an outer spherical surface 4111, and the other is provided with an inner spherical surface 520, and the outer spherical surface 4111 cooperates with the inner spherical surface 520 to form a spherical pair. Exemplarily, the node member 50 is provided with a ball socket (not numbered) having the inner spherical surface 520, and the rigid part 410 is provided with a ball joint fitting member 4112 having the outer spherical surface 4111, and the ball joint fitting member 4112 is inserted into the ball socket.

[0093] According to some embodiments of the present application, referring to Figure 7 and Fig.12 The rigid part 410 includes a first connecting member 411 and a second connecting member 412 constituting a spiral fitting pair. The first connecting member 411 is movably connected to the node member 50, and the second connecting member 412 is used to connect to the support member 10. Specifically, referring to Fig.12 The second connecting member 412 is connected to the flexible cable 420 through the cable plate 413, and is connected to the support member 10 through the flexible cable 420. The length of the rigid part 410 is adjusted by screw fitting. When adjusting, the first connecting member 411 and the second connecting member 412 can be rotated relative to each other, which is convenient to operate and facilitates rapid adjustment.

[0094] In some embodiments, reference Fig.12 The rigid portion 410 of the semi-rigid anti-arch cable 40 includes a first portion P1 and a second portion P2 movably connected to the first portion P1 . The first portion is connected to the node member 50 , and the second portion is connected to the support member 10 .

[0095] Exemplarily, the first part P1 includes a first connecting member 411 and a second connecting member 412 forming a spiral fitting pair. The second part P2 includes a cable plate 413. One end of the cable plate 413 in the length direction is connected to the flexible cable 420. Specifically, the cable plate 413 can be connected to the flexible cable through an anchor. The other end of the cable plate 413 in the length direction is fixedly connected to the second connecting member 412 or can be relatively rotatably connected. Specifically, refer to Fig.12 and Fig.13, the second connecting member 412 and the cable plate 413 are respectively provided with a pin hole 4122, and the through hole 511 of the two is connected by a pin shaft 414 and a split pin 415. When the cable plate 413 and the second connecting member 412 are relatively rotatably connected, they can be relatively rotatably connected along the first direction X or the second direction Y; and the scheme that the cable plate 413 and the second connecting member 412 are relatively rotatably connected along the first direction X or the second direction Y, and the scheme that the rigid part 410 and the node member 50 are relatively movable in the first direction X and / or the second direction Y can be used in any combination, so that the flexible bracket 1 can better resist crosswind. For example, the cable plate 413 and the second connecting member 412 are in the second direction Y, and the rigid part 410 and the node member 50 are relatively movable in the second direction Y. In this way, when encountering a crosswind in the second direction Y, the rigid part 410 and the node member 50 can move relatively in the second direction Y to avoid shearing between the node member 50 and the rigid part 410, and the cable plate 413 and the second connecting member 412 can move relatively in the second direction Y, so that the flexible cable 420 and the cable plate 413 can also move to adapt to the crosswind, which can reduce the wear between the flexible cable 420 and the cable plate 413. The first part P1 and the second part P2 of the rigid part 410 are movably connected and can move to adapt to the crosswind, reducing the wear between the two parts.

[0096] It is understandable that there is no limitation on the specific structure of the first part P1 and the second part P2. In other embodiments, the first part P1 is not limited to being configured to include the first connecting member 411 and the second connecting member 412 forming a spiral fitting pair. For example, the first part P1 may be configured to be non-length-adjustable. For another example, the first part P1 and the node member 50 may be relatively movably connected or fixedly connected.

[0097] In some embodiments, reference Fig.14 and Fig.15 , the first connecting member 411 is connected to the node member 50, specifically connected to the seat body 510. The first connecting member 411 includes a sleeve 4113, a ball joint fitting 4112 provided at the head end of the sleeve 4113, the inner cavity 4114 of the sleeve 4113 is provided with a threaded hole section 4115, and the ball joint fitting 4112 has an outer spherical surface 4111. Correspondingly, a ball socket (not numbered) having an inner spherical surface 520 is provided on the seat body 510 of the node member 50. The ball joint fitting 4112 is inserted into the ball socket so that the first connecting member 411 and the seat body 510 of the node member 50 form a spherical fitting pair. Specifically, the ball joint fitting 4112 is inserted into the ball socket and fixed to the seat body 510 by a ball joint end cover 4116 and a screw 4117. It can be understood that the positions of the inner spherical surface 520 and the outer spherical surface 4111 can also be interchanged.

[0098] The second connecting member 412 includes a screw rod 4121 that cooperates with the threaded hole section 4115. The screw rod 4121 is threadedly engaged with the threaded hole section 4115, so that the second connecting member 412 and the first connecting member 411 form a spiral engagement pair.

[0099] In the above manner, the first connecting member 411 and the second connecting member 412 form a spiral fitting pair, and the first connecting member 411 and the seat body 510 of the node member 50 form a spherical fitting pair. The spiral fitting pair and the spherical fitting pair can be used together to conveniently adjust the tightness of the semi-rigid anti-arch cable 40.

[0100] Specifically, refer to Figure 7 and Fig.15 The process of adjusting the tightness of the semi-rigid anti-arch cable 40 is briefly described as follows: the ball joint fitting 4112 can rotate relative to the seat body 510, so the sleeve 4113 can rotate around the axis P of the sleeve 4113. When the tightness of the semi-rigid anti-arch cable 40 needs to be adjusted, the sleeve 4113 is rotated to rotate its axis P, and the screw 4121 spirally matched with the sleeve 4113 can only move linearly under the restriction of the flexible cable 420, thereby tightening the flexible cable 420 or loosening the flexible cable 420, so as to adjust the tightness of the semi-rigid anti-arch cable 40.

[0101] In addition, the first connecting member 411 and the seat body 510 of the node member 50 form a spherical matching pair. In addition to being used in conjunction with the spiral matching pair formed by the first connecting member 411 and the second connecting member 412 to adjust the tightness of the semi-rigid anti-arch cable 40, as mentioned above, the spherical matching pair also enables the flexible bracket 1 to resist crosswinds in any direction. That is, the spherical matching pair is used to adjust the tightness of the semi-rigid anti-arch cable 40 and to enable the flexible bracket 1 to resist crosswinds, thereby simplifying the structure of the flexible bracket 1.

[0102] Reference Fig.14 and Fig.15 To avoid accidental disengagement of the second connecting member 412 and the first connecting member 411 when adjusting the tightness of the semi-rigid anti-arch cable 40, a limiter 4123 is also provided on the screw rod 4121 of the second connecting member 412, and the limiter 4123 is configured to prevent the screw rod 4121 from disengaging from the sleeve 4113.

[0103] There are many ways to prevent the screw 4121 from detaching from the sleeve 4113 by using the limiter 4123. For example, the limiter 4123 is located on the side of the threaded hole section 4115 close to the node member 50. In the radial direction of the sleeve 4113, the size of the limiter 4123 is larger than the inner diameter of the threaded hole section 4115, thereby preventing the screw 4121 from detaching from the sleeve 4113. For another example, a blocking structure for axially blocking the limiter 4123 is provided in the inner cavity 4114 of the sleeve 4113. The blocking structure can specifically be an annular step provided on the inner wall of the inner cavity 4114. By providing the limiter 4123 configured to prevent the screw 4121 from detaching from the sleeve 4113, the second connecting member 412 and the first connecting member 411 are prevented from accidentally detaching when adjusting the tightness of the semi-rigid anti-arch cable 40, thereby preventing the flexible bracket 1 from becoming unstable.

[0104] In some embodiments, reference Fig.15 In the axial direction of the sleeve 4113, the ball hinge fitting 4112 is detachably arranged at the axial head end (unnumbered) of the sleeve 4113, the threaded hole section 4115 is arranged at the axial tail end (unnumbered) of the sleeve 4113, and the limit member 4123 is detachably arranged on the screw rod 4121, and the size of the limit member 4123 is larger than the inner diameter of the threaded hole section 4115.

[0105] In the above manner, when the limit member 4123 moves relative to the sleeve 4113 along the axial direction of the sleeve 4113, the limit member 4123 cannot pass through the threaded hole section 4115. The limit member 4123 can prevent the screw rod 4121 from disengaging from the sleeve 4113 when moving away from the node member 50, thereby avoiding the second connecting member 412 and the first connecting member 411 from accidentally disengaging when adjusting the tightness of the semi-rigid anti-arch cable 40.

[0106] On the premise of realizing the anti-drop function, by detachably setting the ball hinge fitting 4112 at the head end of the sleeve 4113, and detachably setting the stopper 4123 at the screw rod 4121, it is also convenient to assemble the first connecting member 411 and the second connecting member 412. Specifically, during assembly, the screw rod 4121 is first extended from the head end of the sleeve 4113 into the inner cavity 4114 of the sleeve 4113 and the threaded hole section 4115 is threadedly connected, and then the stopper 4123 is installed on the screw rod 4121, and finally the ball hinge fitting 4112 is installed to the head end of the sleeve 4113 to close the head end of the sleeve 4113.

[0107] Preferably, the length of the screw rod 4121 is set to be greater than the axial length of the sleeve 4113. In this way, the screw rod 4121 can extend from the head end of the sleeve 4113 after extending into the sleeve 4113 from the tail end of the sleeve 4113, thereby having a larger operating space to facilitate the installation of the stopper 4123.

[0108] In some embodiments, reference Fig.14and Fig.15 , a first flange 4118 is provided at the head end of the sleeve 4113. The ball joint fitting 4112 is provided with a second flange 4119. The second flange 4119 is detachably connected to the first flange 4118 by a fastener (not numbered). The connection between the ball joint fitting 4112 and the sleeve 4113 is not limited thereto, and may also be connected by a snap connection, a pin connection, etc. The sleeve 4113 and the ball joint fitting 4112 are docked by two flanges, and can be quickly aligned and then assembled.

[0109] The specific shape and installation method of the stopper 4123 are not limited. For example, the stopper 4123 can be installed at the end of the screw rod 4121 and fixed by a screw. For another example, the stopper 4123 is a plate-like structure that is sleeved on the screw rod 4121 through an interference fit and is fixedly connected to the screw rod 4121.

[0110] According to some embodiments of the present application, referring to Figure 1 and Figure 6 The node member 50 is installed on the stabilizing cable 30 in an adjustable position. For example, the seat body 510 of the node member 50 is detachably fixedly connected to the stabilizing cable 30. In this way, the node member 50 can be freely adjusted in the installation position on the stabilizing cable 30, and can be used to adjust the tightness of the semi-rigid anti-arch cable 40. In addition, the position adjustment of the node member 50 can also cooperate with the length adjustment of the rigid part 410 to more conveniently achieve the tightness adjustment of the semi-rigid anti-arch cable 40.

[0111] In some embodiments, reference Figure 1 and Figure 6 , the stabilizing cable 30 is frictionally connected with the node member 50. The friction connection means that the stabilizing cable 30 and the node member 50 are relatively positioned by friction. For example, a slot is provided on the node member 50, and the friction between the slot and the stabilizing cable 30 is used to position the stabilizing cable 30. When the position of the node member 50 needs to be adjusted, the node member 50 can be moved relative to the stabilizing cable 30 to overcome the friction, without disassembly action, and the operation efficiency is high.

[0112] Reference Fig.12 and Fig.13 As shown, illustratively, the seat body 510 of the node member 50 is provided with a through hole 511, the stabilizing cable 30 is passed through the through hole 511, and the outer diameter of the stabilizing cable 30 matches the inner hole of the through hole 511, so that the stabilizing cable 30 is frictionally connected with the node member 50. This method facilitates the adjustment of the installation position of the node member 50, and simplifies the fixing scheme by eliminating the use of bolts to connect the stabilizing cable 30 and the bracket.

[0113] like Fig.13 and Fig.14As shown, the seat body 510 includes a first seat body 512 and a second seat body 513 that are detachably docked and matched, and the second seat body 513 and the first seat body 512 form a through hole 511. Therefore, the stabilizing cable 30 can be conveniently installed when the first seat body 512 and the second seat body 513 are in a separated state. Specifically, the first seat body 512 and the second seat body 513 are each provided with a groove 514 (such as a semicircular groove) for forming the above-mentioned through hole 511, and the complete through hole 511 is formed only after the first seat body 512 and the second seat body 513 are docked. When installing the stabilizing cable 30, the stabilizing cable 30 is placed in the groove 514 on the first seat body 512 or the second seat body 513, and then the first seat body 512 and the second seat body 513 are connected by bolts. Compared with directly inserting the stabilizing cable 30 into the through hole 511, there is no need to accurately align the stabilizing cable 30 with the through hole 511 axially, which is convenient to operate and has high installation efficiency.

[0114] According to some embodiments of the present application, referring to Figure 6 , Figure 7 and Fig.12 The flexible bracket 1 also includes a truss 60 connected to the mounting position 530, and part of the truss 60 is connected to the component cable 20; along the second direction, adjacent node members 50 are interconnected by at least one truss 60, and the second direction Y is perpendicular to the first direction X and perpendicular to the height direction Z of the support member.

[0115] Exemplarily, the node member 50 includes a plurality of mounting positions 530 for arranging the base body 510. A plurality of trusses 60 are mounted on the mounting positions 530.

[0116] In a preferred embodiment, the mounting position 530 includes an ear plate 531 protruding from the base 510, and each ear plate 531 is provided with a connection hole 532; the truss rod 60 is mounted to the connection hole 532. Specifically, the truss rod 60 can be mounted to the connection hole 532 by means of a screw 4117 or other suitable fasteners. The ear plate 531 is protruding from the base 510, and a larger operating space is provided when installing the truss rod 60.

[0117] Further, refer to Figure 12 to Figure 14 The ear plate 531 is provided with two locations spaced apart along the second direction Y, and the connecting hole 532 penetrates the ear plate 531 along the second direction Y. In this way, the trusses 60 can be installed on both sides of each ear plate 531 in the second direction Y, and a set of fasteners can be shared to simplify the structure. In this way, each seat body 510 can be connected to four trusses 60.

[0118] Reference Figure 6 , Figure 7 and Fig.12, in the second direction Y, the photovoltaic components 2 are arranged in multiple rows. a and b of the four trusses 60 can be used to connect the first sub-cable 220 and the second sub-cable 230 of the component cable 20. c and d of the four trusses 60 can be used to realize the interconnection of two adjacent node members 50 in the second direction Y. In this way, only one base 510 of the node member 50 is needed to connect up to four trusses 60, thereby realizing the connection with the component cable 20 and the interconnection of two adjacent node members 50 in the second direction Y. After different node members 50 are connected, a rigidity is provided in the plane, and the load is dispersed to multiple load-bearing areas, so as to maintain good stability even in a large-span scenario.

[0119] Specifically, Figure 6 As shown, in the second direction Y, a plurality of node members 50 are interconnected to form a cable truss, thereby providing a frame of rigidity; at the same time, in the first direction X, a plurality of such cable trusses are formed. Fig. 9 As shown, when the photovoltaic assembly 2 is subjected to wind pressure, multiple cable trusses form multiple stress-bearing areas m in the first direction X to disperse the load, and the stress of a single stress-bearing area m is small, which is conducive to increasing the span of the flexible bracket 1, that is, the length in the first direction X. The above-mentioned stress-bearing area m is formed between adjacent cable trusses and between the cable trusses and the support member 10.

[0120] In the above embodiment, a plurality of trusses are arranged on the node member 50 to simultaneously realize the connection with the component cable 20 and the interconnection of adjacent node members 50 in the second direction Y, thereby establishing a stable system supporting the component cable 20, the stabilizing cable 30 and the semi-rigid anti-arch cable 40. At the same time, a plurality of stress-bearing areas m are formed in the first direction X to disperse the load, thereby facilitating increasing the span of the flexible bracket 1.

[0121] According to some embodiments of the present invention, reference Figure 1 Along the first direction X, node members 50 and semi-rigid anti-arch cables 40 are provided at both ends of the stabilizing cable 30 , and the middle section of the stabilizing cable 30 is connected to the component cable 20 through a supporting node 70 .

[0122] The rigid anti-arch cable is only provided at the head and tail of the stabilizing cable 30. The semi-rigid anti-arch cable 40 is provided. The length of the semi-rigid anti-arch is short, which reduces the cable cost while ensuring the stability of the cavity. The middle section of the stabilizing cable 30 is connected to the component cable 20 through one or more supporting nodes 70 to improve the wind resistance of the stable middle section. The middle section of the stabilizing cable 30 refers to the portion of the stabilizing cable 30 located between the two node members 50.

[0123] Furthermore, the middle section of the stabilizing cable 30 is frictionally connected to the supporting node 70. The friction connection here can be completely the same as the friction connection between the stabilizing cable 30 and the node member 50, so it will not be described in detail. In this way, the position of the supporting node 70 in the middle section of the stabilizing cable 30 can be adjusted as needed, which is conducive to improving the wind resistance of the stabilizing middle section.

[0124] According to some embodiments of the present application, Figure 1 As shown, a photovoltaic system is also provided. The photovoltaic system comprises the flexible support 1 of any of the above embodiments and a plurality of photovoltaic modules 2 , wherein the plurality of photovoltaic modules 2 are installed on the bearing surface 210 .

[0125] In the above-mentioned photovoltaic system, the first end 401 of the semi-rigid reverse arch cable 40 of the flexible support 1 is configured to have a rigid portion 410. In this way, the rigid portion 410 of the semi-rigid reverse arch cable 40 itself and the node member 50 together constitute a "node connection component", which can provide rigidity on the one hand, and on the other hand, the deviation between the rigid center and the center of mass of the "node connection component" is small, and it is not easy to flip. Therefore, the structure of the flexible support 1 of the present application is more stable, thereby ensuring the normal operation of the photovoltaic system. In addition, the rigid portion 410 and the node member 50 can be set to be relatively movably connected, and can also adapt to the changes in wind load and deform, thereby avoiding stress concentration and shear damage of the node member 50; making the structure of the flexible support 1 more stable.

[0126] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] In the description of the present application, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups).

[0128] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0129] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0130] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A flexible bracket, characterized in that: The flexible support comprises: Support members, wherein at least two of the support members are arranged at intervals along a first direction, and component cables and stabilizing cables along the first direction are installed between two adjacent support members, wherein the component cables form a bearing surface; A node member, the node member being connected to both the stabilizing cable and the component cable; A semi-rigid reverse arch cable, wherein the first end of the semi-rigid reverse arch cable has a rigid portion connected to the node member, the second end of the semi-rigid reverse arch cable is connected to the support member, and the rigid portion is relatively movably connected to the node member.

2. The flexible bracket according to claim 1, characterized in that: The rigid portion and the node member are relatively movable at least in a second direction, and the second direction is perpendicular to the first direction and perpendicular to a height direction of the support member.

3. The flexible bracket according to claim 1, characterized in that: The rigid portion and the node member are relatively movable at least in a height direction of the support member.

4. The flexible bracket according to claim 1, characterized in that: The semi-rigid anti-arch cable includes the rigid part and a flexible cable connected to the rigid part, and the flexible cable is connected to the supporting member.

5. The flexible bracket according to claim 1, characterized in that: The rigid part and the node member are connected in a relatively movable manner by means of a spherical pair.

6. The flexible bracket according to claim 1, characterized in that: The rigid portion is configured to be adjustable in length.

7. The flexible bracket according to any one of claims 1 to 6, characterized in that: The rigid part includes a first connecting member and a second connecting member forming a screw fitting pair, wherein the first connecting member is connected to the node member, and the second connecting member is used to connect to the supporting member.

8. The flexible bracket according to claim 7, characterized in that: The first connecting member includes a sleeve and a ball hinge fitting provided at the head end of the sleeve, the inner cavity of the sleeve includes a threaded hole section, and the ball hinge fitting and the node member form a spherical fitting pair; The second connecting member includes a screw rod matched with the threaded hole section, wherein the screw rod is further provided with a limiting member, and the limiting member is configured to prevent the screw rod from being separated from the sleeve.

9. The flexible bracket according to claim 8, characterized in that: The limit member is located on a side of the threaded hole section close to the node member, and in the radial direction of the sleeve, the size of the limit member is larger than the inner diameter of the threaded hole section; or, a blocking structure for axially blocking the limit member is provided in the inner cavity of the sleeve.

10. The flexible bracket according to claim 9, characterized in that: In the axial direction of the sleeve, the ball hinge fitting is detachably arranged at the head end of the sleeve, the threaded hole section is arranged at the tail end of the sleeve, and the limiting member is detachably arranged on the screw rod.

11. The flexible bracket according to any one of claims 1 to 6, characterized in that: The rigid part includes a first part and a second part movably connected to the first part, the first part is connected to the node member, and the second part is connected to the support member.

12. The flexible bracket according to claim 1, characterized in that: The node member is mounted on the stabilizing cable in an adjustable manner.

13. The flexible bracket according to claim 12, characterized in that: The stabilizing cables are frictionally connected to the node members.

14. The flexible bracket according to claim 13, characterized in that: The node member is provided with a through hole, the stabilizing cable is passed through the through hole, and the outer diameter of the stabilizing cable matches the inner hole of the through hole.

15. The flexible bracket according to claim 1, characterized in that: The flexible bracket also includes a truss connected to the node member, and part of the truss is connected to the component cable; along the second direction, adjacent node members are interconnected by at least one truss, and the second direction is perpendicular to the first direction and perpendicular to the height direction of the support member.

16. The flexible bracket according to claim 1, characterized in that: Along the first direction, the node members and the semi-rigid anti-arch cable are provided at both ends of the stabilizing cable, and the middle section of the stabilizing cable is connected to the component cable via a supporting node.

17. The flexible bracket according to claim 16, characterized in that: The length of the portion of the stabilizing cable located between the node member and the supporting member is L1, and the total length of the stabilizing cable is L2, wherein the range of L1 / L2 is 1 / 5-1 / 4.

18. The flexible bracket according to claim 1, characterized in that: In the height direction of the support member, the first end of the semi-rigid reverse arch cable is higher than the second end of the semi-rigid reverse arch cable; and the stabilizing cable is configured as an arch shape opening upward.

19. A photovoltaic system, characterized in that: It comprises a flexible bracket as described in any one of claims 1 to 18; and a plurality of photovoltaic components, wherein the photovoltaic components are installed on the bearing surface.

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