Cable structure photovoltaic support system
By adopting interlaced or stepped dislocation fish-bellied cord truss structure and abdominal rod cross-linking structure in the cable structure photovoltaic support system, the problem of instability of the cable structure under high wind loads is solved, the stability is improved and the modification cost is reduced. , suitable for the construction of photovoltaic projects with a larger span.
Patent Information
- Application Number
- CN202411486353.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2024-12-17
AI Technical Summary
The existing cable structure photovoltaic support system is prone to instability under strong wind loads, resulting in structural deformation and damage. The construction of photovoltaic project is sensitive to cost control, making it difficult to transform existing systems while ensuring the stability of the new construction system to reduce costs.
The fish-bellied cable truss structure is arranged in an interlaced or stepped manner, and the fixed beam is connected through the abdominal rod cross-linking structure and the rigid restraining structure to enhance its resistance to wind loads, and the existing system is reinforced through the newly expanded cable structure support system. , reduce construction and renovation costs.
It improves the stability of the photovoltaic support system, reduces construction and transformation costs, enhances the power and static response capabilities to extreme weather, and extends the service life of the system.
Smart Images
Figure CN119154772A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of photovoltaic support systems, and in particular to a cable-structured photovoltaic support system. Background Art
[0002] At present, in the photovoltaic industry, cable structures are generally used as the main load-bearing structures. The cable structures are used as flexible brackets, and photovoltaic modules are installed on the cable structures. Since the cable structures are usually set as flexible structures, wind vibration effects will occur under the action of strong wind loads. The cable structures are prone to instability under the action of wind vibration, resulting in large deformation of the cable structures, which in turn causes hidden cracks and damage to the cable structures and photovoltaic modules.
[0003] At present, a Chinese invention with a publication number of CN116743037B discloses a cable-structured photovoltaic flexible bracket, including a support frame and a photovoltaic module, wherein the support frame is provided with a plurality of mounting modules for mounting photovoltaic modules, a support module for fixing the mounting modules and a truss module for connecting the plurality of mounting modules; the plurality of mounting modules are arranged side by side in a horizontal direction, and the mounting modules include an upper cable, a lower cable and a load-bearing cable; the photovoltaic module is installed between the upper cable and the lower cable, and the load-bearing cable is located below the lower cable and is passed through the truss module.
[0004] The existing invention further supports the photovoltaic components by setting load-bearing cables, and limits the positions of the upper cables and the lower cables respectively by the load-bearing cables and the truss modules so that the truss modules can control the relative deformation of the upper cables and the lower cables under the action of wind loads, so that two adjacent groups of truss modules will not collide under the wind load, thereby enhancing the overall stability of the installed modules; however, on the one hand, the load-bearing cables and the truss modules can only strengthen the structural stability along the length direction of the load-bearing cables, and the wind load along the direction perpendicular to the length direction of the load-bearing cables lacks supporting force, which easily causes the truss modules to shake back and forth and cause damage to the photovoltaic components and the truss modules; on the other hand, the construction of photovoltaic projects today is extremely sensitive to cost control. For photovoltaic projects that have been completed or are about to be expanded, how to ensure the stability of the newly constructed photovoltaic system while being able to transform the completed photovoltaic system and reasonably control the cost is a problem that needs to be urgently solved in this field. Summary of the invention
[0005] The purpose of the present invention is to provide a cable structure photovoltaic support system, which has the advantages of good stability and low construction and modification cost.
[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a cable structure photovoltaic support system, including a first cable structure support system and a second cable structure support system expanded later; the first cable structure support system and the second cable structure support system both include at least two fixed beams arranged along the X direction and a number of fish-belly cable trusses arranged along the length direction of the fixed beams and spanned and fixedly connected between adjacent fixed beams perpendicular to the X direction, a number of photovoltaic modules are evenly installed on the fish-belly cable trusses along the X direction, the span between adjacent fixed beams is L, and the adjacent first cable structure support systems and the second cable structure support systems or the adjacent second cable structure support systems are staggered or stepped.
[0007] The present invention is further configured as follows: the fish-belly cable truss includes at least two upper chords arranged along the X direction and at least one lower chord arranged in a broken line shape, and also includes at least one set of web rod assemblies connecting the upper chords and the lower chords, and the web rod assembly is located in a vertical plane.
[0008] The present invention is further configured as follows: N web rod assemblies are evenly distributed in the span space of a single fish-bellied cable truss, thereby dividing the single fish-bellied cable truss into N+1 equidistant intervals, and the spacing of each interval is L / (N+1); a plurality of fish-bellied cable trusses in the same group are interconnected based on a web rod cross-linking structure and are extended and connected to adjacent fixed beams based on a rigid constraint structure; and the offset spacing between adjacent first cable structure support systems and second cable structure support systems or between adjacent second cable structure support systems is between L / (N+1) and LL / (N+1).
[0009] The present invention is further configured as follows: N is an odd number, and the offset spacing between adjacent first cable structure support systems and second cable structure support systems or between adjacent second cable structure support systems is L / 2.
[0010] The present invention is further configured as follows: the web assembly is in a triangular structure, including a first web and a second web for respectively connecting the upper chord and the lower chord, and a third web for connecting the upper chord, the hinge point between the first web and the second web is a first hinge point, and the hinge points between the third web and the first web and the second web are respectively the second hinge point and the third hinge point, the web cross-linking structure includes a first strut and a second strut, the first strut and the second strut are in a cross structure or a triangular structure, when in a cross structure, the first strut and the second strut are used to connect the first hinge point and the third hinge point and the first hinge point and the second hinge of adjacent web assemblies; when in a triangular structure, the first strut and the second strut are used to connect the first hinge point and the third hinge point with the second hinge of the adjacent web assembly.
[0011] The present invention is further configured as follows: the web cross-linking structure further comprises a third strut for connecting the first hinge points of adjacent web assemblies.
[0012] The present invention is further configured as follows: the rigid constraint structure is triangular in structure, and the fixed beam is connected to the first hinge point and the second hinge point based on a rigid connector, a damper, or a combination of a rigid connector and a damper.
[0013] The present invention is further configured such that: the rigid connector is connected to the fixed beam based on a fixed manner, an articulated manner, or a combination of a fixed manner and an articulated manner.
[0014] The present invention is further configured as follows: the number of fixed beams of the first cable structure support system and the second cable structure support system are equal, the spacing L between adjacent fixed beams is equal, and the length of the fixed beams of the second cable structure support system is not higher than 30 meters.
[0015] In summary, the present invention has the following beneficial effects: 1. By arranging the adjacent first cable structure support system and the second cable structure support system in a staggered or stepped dislocation arrangement, and arranging a plurality of fish-bellied cable trusses in the same group to be mutually connected based on the web rod cross-linking structure and to be extended and connected to the adjacent fixed beams based on the rigid constraint structure, the web rod cross-linking structure realizes the mutual connection of the web rod assembly in the fish-bellied cable truss in the same group with the web rod of the adjacent fish-bellied cable truss through the combination of the first strut, the second strut and the third strut, and realizes the cross-linking of the web rod system through different forms of coupling of the degrees of freedom of the nodes of the web rod assembly of the adjacent fish-bellied cable trusses, thereby realizing the coordination of displacement, and at the same time, realizes the connection of the interconnected web rod assembly with the fixed beam of the adjacent second cable structure support system through the rigid constraint structure, so as to realize the constraint of the degrees of freedom of the web rod cross-linking structure, when subjected to wind loads along a direction perpendicular to the fixed beam, the web rod cross-linking structure and the rigid constraint structure realize the use of the fixed beam as a rigid constraint to suppress the dynamic and static responses of the interconnected web rod structure and the fish-bellied cable truss in extreme weather, thereby reducing the degree of swaying of the fish-bellied cable truss, thereby increasing stability; 2. The first cable structure support system that has been built is reinforced by the second cable structure support system that is about to be expanded or newly expanded. While ensuring the stability of the newly expanded second cable structure support system, the stability of the first cable structure support system is improved, the cost of construction and renovation is reduced, and the way is paved for the construction and renovation of cable structure support systems with larger spans. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a structural schematic diagram of a fish-bellied cable truss of Example 1; Figure 2 is a schematic structural diagram of a first cable structure support system and a second cable structure support system in Example 1, which are arranged in a staggered manner; Figure 3 is a schematic structural diagram of a first cable structure support system and a second cable structure support system in Example 5, which are arranged in a stepped staggered manner; Figure 4 is a schematic structural diagram of the cross-linked structure of the web in Example 1; Figure 5 is a schematic structural diagram of the cross-linked structure of the web in Example 3; Figure 6 Schematic diagram of the structure of the cross-linked structure of the webs of Examples 3 and 4; Figure 7 is a structural schematic diagram of the rigid constraint structure of Example 1; Figure 8 is a structural schematic diagram of the rigid constraint structure of Example 1; Fig. 9 It is a structural schematic diagram of the rigid constraint structure of Example 1.
[0017] Figure numerals: 1. first cable structure support system; 2. second cable structure support system; 3. fixed beam; 4. fish-belly cable truss; 41. upper chord; 42. lower chord; 43. web member assembly; 44. first web member; 45. second web member; 46. third web member; 47. first hinge point; 48. second hinge point; 49. third hinge point; 5. photovoltaic assembly; 6. web member cross-linking structure; 61. first strut; 62. second strut; 63. third strut; 7. rigid constraint structure; 71. rigid connector; 72. damper. DETAILED DESCRIPTION
[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0019] Example: refer to Figure 1 A cable structure photovoltaic support system comprises a first cable structure support system 1 and a second cable structure support system 2 which is expanded later. Both the first cable structure support system 1 and the second cable structure support system 2 comprise at least two fixed beams 3 arranged along the X direction and a plurality of fish-belly cable trusses 4 which are arranged along the length direction of the fixed beams 3 and are fixedly connected between adjacent fixed beams 3 by spanning perpendicular to the X direction. A plurality of photovoltaic modules 5 are evenly installed on the fish-belly cable trusses 4 along the X direction. The X direction is determined by factors such as the climate and light of the installation site, so as to minimize the influence of weather factors on the photovoltaic modules 5 while ensuring the maximum photovoltaic power generation efficiency. The span between adjacent fixed beams 3 is L, and the adjacent first cable structure support systems 1 and the second cable structure support systems 2 or the adjacent second cable structure support systems 2 are staggered and arranged. In this embodiment, the number of fixed beams 3 of the first cable structure support system 1 and the second cable structure support system 2 is equal and the spacing L between adjacent fixed beams 3 is equal, and the length of the fixed beams 3 of the second cable structure support system 2 is not more than 30 meters, thereby reducing the construction cost of the second cable structure support system 2 to be expanded later and ensuring the stability between the first cable structure support system 1 and the second cable structure support system 2.
[0020] Specifically, the fish-bellied cable truss 4 includes at least two upper chords 41 arranged along the X direction and at least one lower chord 42 arranged in a broken line shape, and also includes at least one group of web rod assemblies 43 connecting the upper chords 41 and the lower chords 42, the web rod assemblies 43 are located in the vertical plane, and N web rod assemblies 43 are evenly distributed in the span space of a single fish-bellied cable truss 4, thereby dividing the single fish-bellied cable truss 4 into N+1 equidistant intervals, and the spacing of each interval is L / (N+1). Several fish-bellied cable trusses 4 in the same group are interconnected based on the web rod cross-linking structure 6 and are extended to adjacent fixed beams 3 based on the rigid constraint structure 7, and the offset spacing between adjacent first cable structure support systems 1 and second cable structure support systems 2 or between adjacent second cable structure support systems 2 is between L / (N+1) and LL / (N+1).
[0021] Specifically, the web assembly 43 is triangular in structure, including a first web 44 and a second web 45 for connecting the upper chord 41 and the lower chord 42 respectively, and a third web 46 for connecting the upper chord 41, the hinge point between the first web 44 and the second web 45 is a first hinge point 47, the hinge points between the third web 46 and the first web 44 and the second web 45 are a second hinge point 48 and a third hinge point 49 respectively, the web cross-linking structure 6 includes a first strut 61 and a second strut 62, the first strut 61 and the second strut 62 are cross-shaped in structure, the first strut 61 and the second strut 62 are used to connect the first hinge point 47 and the third hinge point 49 of adjacent web assemblies 43 and the first hinge point 47 and the second hinge point 49.
[0022] Specifically, the rigid constraint structure 7 is triangular in structure, and the fixed beam 3 is connected with the first hinge point 47 and the second hinge point 48 based on a rigid connector 71, a damper 72, or a combination of a rigid connector and a damper 72. The rigid connector 71 is connected to the fixed beam 3 based on a fixed manner, a hinged manner, or a combination of a fixed and hinged manner.
[0023] Embodiment 2: Compared with Example 1, in this embodiment, N is an odd number, and the offset spacing between adjacent first cable structure support systems 1 and second cable structure support systems 2 or between adjacent second cable structure support systems 2 is L / 2. The web rod assemblies 43 located in the middle position of the same group of fish-belly cable trusses 4 are connected through the web rod cross-linking structure 6 to ensure the supporting effect of the middle part of the fish-belly cable truss 4, and can provide better supporting force and stability for the fish-belly cable truss 4 compared to other web rod assemblies 43.
[0024] Embodiment 3: Compared with Example 1, in this embodiment, the web cross-linking structure 6 includes a first strut 61 and a second strut 62. The first strut 61 and the second strut 62 are triangular in structure. The first strut 61 and the second strut 62 are used to connect the first hinge point 47 and the third hinge point 49 with the second hinge point 48 of the adjacent web assembly 43. The web cross-linking structure 6 also includes a third strut 63 for connecting the first hinge point 47 of the adjacent web assembly 43.
[0025] Embodiment 4: Compared with Example 1, in this embodiment, the web cross-linking structure can also be further provided with a third strut 63 for connecting the first hinge points 47 of adjacent web assemblies 43. The third strut 63 can increase the degree of displacement coordination between the web assemblies 43 of adjacent fish-bellied cable trusses 4, thereby further improving stability.
[0026] Embodiment 5: Compared with embodiments 1-4, in this embodiment, adjacent first cable structure support systems 1 and second cable structure support systems 2 or adjacent second cable structure support systems 2 are staggered in a stepped manner.
[0027] Brief description of the usage process: The web rod assemblies 43 of adjacent fish-bellied cable trusses 4 are interconnected through the web rod cross-linking structure 6 to achieve coordinated displacement, and at the same time, the interconnected web rod assemblies 43 are connected to the fixed beam 3 of the adjacent second cable structure support system 2 through the rigid constraint structure 7 to suppress the dynamic and static response of the interconnected web rod structure and the fish-bellied cable truss 4 under extreme weather conditions, thereby reducing the degree of forward and backward shaking of the fish-bellied cable truss 4.
[0028] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.
Claims
1. A cable structure photovoltaic support system, comprising a first cable structure support system (1) and a second cable structure support system (2) which is subsequently expanded; characterized in that: The first cable structure support system (1) and the second cable structure support system (2) each comprise at least two fixed beams (3) arranged along the X direction and a plurality of fish-bellied cable trusses (4) arranged along the length direction of the fixed beams (3) and fixedly connected between adjacent fixed beams (3) in a direction perpendicular to the X direction; a plurality of photovoltaic modules (5) are evenly mounted on the fish-bellied cable trusses (4) along the X direction; and adjacent first cable structure support systems (1) and second cable structure support systems (2) or adjacent second cable structure support systems (2) are staggered or staggered.
2. A cable structure photovoltaic support system according to claim 1, characterized in that: The fish-bellied cable truss (4) comprises at least two upper chords (41) arranged along the X direction and at least one lower chord (42) arranged in a broken line shape, and also comprises at least one set of web rod assemblies (43) connecting the upper chords (41) and the lower chords (42), wherein the web rod assemblies (43) are located in a vertical plane.
3. A cable structure photovoltaic support system according to claim 2, characterized in that: The span between adjacent fixed beams (3) is L, and N web rod assemblies (43) are evenly distributed in the span space of a single fish-bellied cable truss (4), thereby dividing the single fish-bellied cable truss (4) into N+1 equidistant intervals, and the spacing of each interval is L / (N+1). Several fish-bellied cable trusses (4) in the same group are interconnected based on the web rod cross-linking structure (6) and are extended and connected to adjacent fixed beams (3) based on the rigid constraint structure (7). The offset spacing between adjacent first cable structure support systems (1) and second cable structure support systems (2) or between adjacent second cable structure support systems (2) is between L / (N+1) and LL / (N+1).
4. A cable structure photovoltaic support system according to claim 3, characterized in that: N is an odd number, and the offset distance between adjacent first cable structure support systems (1) and second cable structure support systems (2) or between adjacent second cable structure support systems (2) is L / 2.
5. A cable structure photovoltaic support system according to claim 3, characterized in that: The web member assembly (43) is triangular in structure, and includes a first web member (44) and a second web member (45) for respectively connecting the upper chord (41) and the lower chord (42), and a third web member (46) for connecting the upper chord (41). The hinge point between the first web member (44) and the second web member (45) is a first hinge point (47). The hinge points between the third web member (46) and the first web member (44) and the second web member (45) are respectively a second hinge point (48) and a third hinge point (49). The web member cross-linking structure (6) includes a first support rod ( 61) and a second strut (62), the first strut (61) and the second strut (62) are in a cross-shaped structure or a triangular structure. When in a cross-shaped structure, the first strut (61) and the second strut (62) are used to connect the first hinge point (47) and the third hinge point (49) of the adjacent web assembly (43) and the first hinge point (47) and the second hinge point; when in a triangular structure, the first strut (61) and the second strut (62) are used to connect the first hinge point (47) and the third hinge point (49) and the second hinge point (48) of the adjacent web assembly (43).
6. A cable structure photovoltaic support system according to claim 5, characterized in that: The web cross-linking structure (6) further comprises a third strut (63) for connecting the first hinge points (47) of adjacent web components (43).
7. A cable structure photovoltaic support system according to claim 5 or 6, characterized in that: The rigid constraint structure (7) is triangular in structure, and is based on a rigid connector (71), a damper (72), or a combination of a rigid connector and a damper (72) to connect the fixed beam (3) and the first hinge point (47) and the second hinge point (48).
8. A cable structure photovoltaic support system according to claim 7, characterized in that: The rigid connector (71) is connected to the fixed beam (3) based on a fixed manner, an articulated manner, or a combination of a fixed manner and an articulated manner.
9. The cable structure photovoltaic support system according to claim 1, characterized in that: The number of the fixed beams (3) of the first cable structure support system (1) and the second cable structure support system (2) is equal, and the spacing L between adjacent fixed beams (3) is equal, and the length of the fixed beams (3) of the second cable structure support system (2) is not more than 30 meters.