CN114865997B - Adjustable prestress large-span flexible photovoltaic bracket and system - Google Patents
Adjustable prestress large-span flexible photovoltaic bracket and system Download PDFInfo
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- CN114865997B CN114865997B CN202210386451.8A CN202210386451A CN114865997B CN 114865997 B CN114865997 B CN 114865997B CN 202210386451 A CN202210386451 A CN 202210386451A CN 114865997 B CN114865997 B CN 114865997B
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 48
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 description 19
- 238000009434 installation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/10—Supporting structures directly fixed to the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/50—Arrangement of stationary mountings or supports for solar heat collector modules comprising elongate non-rigid elements, e.g. straps, wires or ropes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the field of photovoltaic supports, and discloses an adjustable prestress large-span flexible photovoltaic support and a system, wherein the flexible photovoltaic support comprises a plurality of support frames, a bearing cable assembly and a plurality of inhaul cable assemblies, and the support frames are arranged at intervals along a first direction; the bearing cable assembly comprises a first bearing cable, a second bearing cable, a stabilizing cable and an adjusting sleeve, wherein the first bearing cable and the second bearing cable are arranged at intervals along a second direction, two ends of the first bearing cable and the second bearing cable are respectively connected with two supporting frames through the adjusting sleeve, the length of the adjusting sleeve is adjustable, the stabilizing cable is positioned below the first bearing cable and the second bearing cable, and two ends of the stabilizing cable are respectively connected with the two supporting frames; the cable assembly comprises a first cable, a second cable and a connecting piece, wherein the first cable is connected with the first bearing cable and the connecting piece, the second cable is connected with the second bearing cable and the connecting piece, and the first cable is connected with the second cable and the stabilizing cable. The invention can improve the wind-absorbing and wind-pressure resistance, the integral rigidity of the structure and reduce the influence of wind vibration.
Description
Technical Field
The invention relates to the field of photovoltaic supports, in particular to an adjustable prestress large-span flexible photovoltaic support and system.
Background
Most of the existing flexible photovoltaic bracket structures are a double-rope system, a three-rope and stay bar system or a bearing rope and stabilizing rope system. The double-cable system has the advantages of small rigidity, large mid-span deflection, weak wind resistance and easy generation of large-scale vibration. The three-cable and stay bar system is characterized in that a stable cable is added to the lower parts of two double cables, and stay bars are added between each row of photovoltaic arrays, so that the system has the problems of limited structural span, high structural cost and the like, although the wind and snow resistance is increased, the mid-span deflection of the structure is reduced, and the wind vibration of the structure is reduced. The system of the bearing cable and the stabilizing cable is characterized in that the arched stabilizing cable is added at the lower part of the bearing cable, and the system can increase the wind absorbing resistance of the structure and has better rigidity, but the system of the bearing cable is difficult to ensure to be in a horizontal and straight state, and the stabilizing cable is easy to loose under the action of wind pressure.
Disclosure of Invention
The invention aims to provide an adjustable prestress large-span flexible photovoltaic bracket and system, which can improve the wind suction resistance and wind pressure resistance, improve the integral rigidity of the structure and reduce the influence of wind vibration.
The technical scheme provided by the invention is as follows:
in one aspect, there is provided a flexible photovoltaic support comprising:
the support frames are arranged at intervals along the first direction;
the bearing cable assembly comprises a first bearing cable, a second bearing cable, a stabilizing cable and a plurality of adjusting sleeves, wherein the first bearing cable and the second bearing cable are arranged at intervals along a second direction, the second direction is perpendicular to the first direction, one end of the first bearing cable and one end of the second bearing cable are respectively connected with one supporting frame through the adjusting sleeves, the other end of the first bearing cable and the other end of the second bearing cable are respectively connected with the other supporting frame through the adjusting sleeves, the length of the adjusting sleeves is adjusted to adjust the prestress on the first bearing cable and the second bearing cable, the stabilizing cable is positioned below the first bearing cable and the second bearing cable, one end of the stabilizing cable is connected with one supporting frame, and the other end of the stabilizing cable is connected with the other supporting frame;
the plurality of cable assemblies are arranged along the first direction at intervals, each cable assembly comprises a first cable, a second cable and a connecting piece, one end of each first cable is connected with each first bearing cable and one end of each connecting piece, one end of each second cable is connected with each second bearing cable and the other end of each connecting piece, and the other end of each first cable is connected with the other end of each second cable and each stabilizing cable.
In some embodiments, the adjusting sleeve comprises a first connecting rod, a sleeve and a second connecting rod which are sequentially connected, one end of the first connecting rod is connected with the first bearing rope or the second bearing rope, the other end of the first connecting rod is in threaded connection with one end of the sleeve, the other end of the sleeve is in threaded connection with one end of the second connecting rod, and the other end of the second connecting rod is connected with the supporting frame.
In some embodiments, the adjusting sleeve further comprises a pressing head, a fork ear and a pin shaft, one end of the pressing head is connected with one end of the first connecting rod far away from the sleeve, and the other end of the pressing head is connected with the first bearing rope or the second bearing rope; one end of the fork lug is connected with one end of the second connecting rod, which is far away from the sleeve, a first through hole is formed in the other end of the fork lug, a part of the support frame is inserted into the fork lug, a second through hole corresponding to the first through hole is formed in the support frame, and the pin shaft penetrates through the first through hole and the second through hole to be fixedly connected with the fork lug and the support frame.
In some embodiments, the connector is a rigid rod.
In some embodiments, the cable assembly further comprises a first fixing member and two second fixing members, the first cable, the second cable and the stabilizing cable are connected through the first fixing member, one end of the connecting member, the first bearing cable and the first cable are fixedly connected through one of the second fixing members, and the other end of the connecting member, the second bearing cable and the second cable are fixedly connected through the other of the second fixing members.
In some embodiments, the first mount comprises oppositely disposed first and second clips;
a first accommodating groove is formed in one side, close to the second rope clip, of the first rope clip, and a first lug is arranged on the other side of the first rope clip; a second accommodating groove corresponding to the first accommodating groove is formed in one side, close to the first rope clip, of the second rope clip, and a second lug is arranged on the other side of the second rope clip;
the stabilizing cable clamp is arranged between the first cable clamp and the second cable clamp and is positioned in the first accommodating groove and the second accommodating groove, the first inhaul cable is fixedly connected with the first lug, and the second inhaul cable is fixedly connected with the second lug.
In some embodiments, the second mount comprises third and fourth oppositely disposed cable clamps;
a third accommodating groove is formed in one side, close to the fourth cable clamp, of the third cable clamp, and a third lug and a fourth lug are arranged on the other side of the third cable clamp; a fourth accommodating groove corresponding to the third accommodating groove is formed in one side, close to the third cable clamp, of the fourth cable clamp;
the first bearing cable is clamped between the third cable clamp and the fourth cable clamp and is positioned in the third accommodating groove and the fourth accommodating groove, the connecting piece is fixedly connected with the third lug, and the first cable is fixedly connected with the fourth lug; or;
the second bearing cable is clamped between the third cable clamp and the fourth cable clamp and is positioned in the third accommodating groove and the fourth accommodating groove, the connecting piece is fixedly connected with the third lug, and the second cable is fixedly connected with the fourth lug.
In some embodiments, the number of the load-bearing cable assemblies is plural, and plural load-bearing cable assemblies are disposed at intervals along the second direction.
On the other hand, still provide a photovoltaic system, including the flexible photovoltaic support and a plurality of photovoltaic module of arbitrary embodiment, a plurality of photovoltaic module is along first direction interval sets up first bearing cable and second bearing cable.
In some embodiments, the photovoltaic module further comprises a pressing block and a clamping hoop, wherein the pressing block is fixed on the first bearing rope or the second bearing rope through the clamping hoop, and the photovoltaic module is fixed on the pressing block.
The invention has the technical effects that:
(1) The first bearing cable and the second bearing cable are respectively connected with the support frame through the adjusting sleeve, and the length of the adjusting sleeve can be adjusted, so that the prestress of the first bearing cable and the second bearing cable can be adjusted according to different wind load conditions and service lives to change the vibration frequency of the photovoltaic support, and the photovoltaic support is prevented from generating resonance under the wind load effect to damage the photovoltaic module; the first bearing rope and the second bearing rope are connected with the stabilizing rope through the connecting piece, the first inhaul cable and the second inhaul cable, the connecting piece, the first inhaul cable and the second inhaul cable form a stable triangle structure, the stability of the photovoltaic support can be improved, and the wind resistance of the photovoltaic support is further improved.
(2) And a rigid rod piece is arranged between the first bearing cable and the second bearing cable, so that the first bearing cable and the second bearing cable can be prevented from being tensioned by the first inhaul cable and the second inhaul cable to change the distance between the first bearing cable and the second bearing cable, and the stability of the photovoltaic bracket is improved.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a top view of a flexible photovoltaic bracket provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a photovoltaic system according to an embodiment of the present disclosure in a top view;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at a in fig. 3;
fig. 5 is a schematic structural diagram of a photovoltaic system according to an embodiment of the present disclosure in a bottom view;
FIG. 6 is an enlarged view at C in FIG. 5;
fig. 7 is an enlarged view at D in fig. 5;
fig. 8 is a cross-sectional view of an adjustment sleeve provided in an embodiment of the present application.
Reference numerals illustrate:
10. a support frame; 11. a column; 12. a cross bar; 21. a first load-bearing cable; 22. a second load-bearing cable; 23. a stabilizing cable; 24. an adjustment sleeve; 241. a first connecting rod; 242. a sleeve; 243. a second connecting rod; 244. a pressure head; 245. fork ears; 246. a pin shaft; 25. a first diagonal; 26. a second diagonal; 31. a first cable; 32. a second guy cable; 33. a connecting piece; 34. a first fixing member; 341. a first cable clamp; 3411. a first lug; 342. a second cable clamp; 3421. a second lug; 35. a second fixing member; 351. a third cable clamp; 3511. a third lug; 3512. a fourth lug; 352. a fourth cable clamp; 40. a photovoltaic module; 51. briquetting; 52. and (5) clamping the clamp.
Detailed Description
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In one embodiment of the present application, as shown in fig. 1 and 2, a flexible photovoltaic bracket includes a plurality of support brackets 10, a carrier cable assembly, and a plurality of cable assemblies.
The plurality of support frames 10 are arranged at intervals along a first direction, and the distance between two adjacent support frames 10 can be set according to actual span requirements so as to meet different span requirements, wherein the support frames 10 are used for supporting the carrier cable assembly, and the first direction is the X-axis direction shown in fig. 2.
As shown in fig. 1, the load-bearing cable assembly includes a first load-bearing cable 21, a second load-bearing cable 22, a stabilizing cable 23 and a plurality of adjusting sleeves 24, the first load-bearing cable 21 and the second load-bearing cable 22 are arranged at intervals along a second direction, the second direction is perpendicular to the first direction, as shown in fig. 2, the second direction is the Y-axis direction shown in fig. 2, one end of the first load-bearing cable 21 and one end of the second load-bearing cable 22 are respectively connected with one supporting frame 10 through the adjusting sleeves 24, the other end of the first load-bearing cable 21 and the other end of the second load-bearing cable 22 are respectively connected with the other supporting frame 10 through the adjusting sleeves 24, the length of the adjusting sleeves 24 is adjusted to adjust the prestress on the first load-bearing cable 21 and the second load-bearing cable 22, the stabilizing cable 23 is located below the first load-bearing cable 21 and the second load-bearing cable 22, one end of the stabilizing cable 23 is connected with the one supporting frame 10, and the other end of the stabilizing cable 23 is connected with the other supporting frame 10.
The two ends of the first bearing cable 21 and the second bearing cable 22 are respectively arranged on the support frame 10 and used for supporting the photovoltaic module 40, the first bearing cable 21 and the second bearing cable 22 are respectively connected with the support frame 10 through the adjusting sleeve 24, and the length of the adjusting sleeve 24 can be changed according to different wind load conditions and service lives in actual use so as to adjust the prestress on the first bearing cable 21, the second bearing cable 22 or the stabilizing cable 23, further change the integral vibration frequency of the structure and prevent the photovoltaic module 40 from being damaged due to resonance generated when the flexible photovoltaic bracket is subjected to wind load.
The number of the bearing cable assemblies can be one or more than two, and when the number of the bearing cable assemblies is more than two, the bearing cable assemblies are arranged at intervals along the second direction. Each carrier cable assembly may have a plurality of photovoltaic modules 40 disposed thereon along a first direction.
As shown in fig. 4, the plurality of cable assemblies are arranged at intervals along the first direction, each cable assembly comprises a first cable 31, a second cable 32 and a connecting piece 33, one end of the first cable 31 is connected with one ends of the first bearing cable 21 and the connecting piece 33, one end of the second cable 32 is connected with the other ends of the second bearing cable 22 and the connecting piece 33, and the other end of the first cable 31 is connected with the other end of the second cable 32 and the stabilizing cable 23.
Each guy cable component can form a stable triangle, and the first bearing cable 21, the second bearing cable 22 and the stabilizing cable 23 are connected, and the stabilizing cable 23 is used for keeping the first bearing cable 21 and the second bearing cable 22 stable, reducing the shaking of the whole photovoltaic bracket under the action of wind power, and further improving the wind resistance of the whole photovoltaic bracket.
In order to reduce the initial prestress value of the load-bearing cable 23, the first and second load-bearing cables 21 and 22 have an initial lower arch deflection of a certain arc. The stabilizing cable 23 has an initial arch deflection with a certain radian, preferably, the stabilizing cable 23 can also be connected with the support frame 10 through the adjusting sleeve 24, and the prestress on the stabilizing cable 23 is changed by adjusting the length of the adjusting sleeve 24, so that the magnitude of the downward pulling force applied to the first bearing cable 21 and the second bearing cable 22 is changed, and the wind resistance of the photovoltaic bracket is further improved. The two ends of the stabilizing rope 23 can be arranged on the posts of the support frame 10 or can be arranged at the bottom of the support frame 10.
Preferably, as shown in fig. 3, the support frame 10 includes a plurality of columns 11 and a plurality of cross bars 12, the plurality of columns 11 are arranged at intervals along the second direction, a cross bar 12 is obliquely arranged at the top of each column 11, the plurality of columns 11 are connected into a whole through reinforcing bars, the plurality of cross bars 12 are also connected into a whole through reinforcing bars, and the cross bars 12 are also connected with the columns 11 through reinforcing bars, so that the stability of the support frame is improved. The first load-bearing cable 21 and the second load-bearing cable 22 are respectively connected with the cross rod 12, the cross rod 12 is obliquely arranged, so that the height of the first load-bearing cable 21 is higher than that of the second load-bearing cable 22, and after the photovoltaic module 40 is arranged on the first load-bearing cable 21 and the second load-bearing cable 22, the photovoltaic module 40 can be in an oblique state to face the sun.
Preferably, the bearing cable assembly further comprises a first inclined cable 25 and a second inclined cable 26, one ends of the first inclined cable 25 and the second inclined cable 26 are respectively fixed on the support frame 10 at the edge, the first inclined cable 25 is arranged corresponding to the first bearing cable 21, the second inclined cable 26 is arranged corresponding to the second bearing cable 22, the other ends of the first inclined cable 25 and the second inclined cable 26 are respectively fixed on the ground, and bending moments borne by the support frame 10 can be balanced through the arrangement of the first inclined cable 25 and the second inclined cable 26, so that the structural stress rationality and the economical efficiency are improved. In some embodiments, as shown in fig. 8, the adjusting sleeve 24 includes a first connecting rod 241, a sleeve 242 and a second connecting rod 243 connected in sequence, one end of the first connecting rod 241 is connected to the first load-bearing cable 21 or the second load-bearing cable 22, the other end of the first connecting rod 241 is screwed to one end of the sleeve 242, the other end of the sleeve 242 is screwed to one end of the second connecting rod 243, and the other end of the second connecting rod 243 is connected to the support frame 10.
The first connecting rod 241 and the second connecting rod 243 are respectively in threaded connection with the sleeve 242, and the length of the whole adjusting sleeve 24 can be adjusted when the first connecting rod 241 and/or the second connecting rod 243 are rotated, so that the prestress on the first bearing cable 21 or the second bearing cable 22 can be adjusted.
As shown in fig. 8, the adjusting sleeve 24 further includes a pressing head 244, a fork ear 245 and a pin shaft 246, one end of the pressing head 244 is connected with one end of the first connecting rod 241 far away from the sleeve 242, and the other end of the pressing head 244 is connected with the first bearing cable 21 or the second bearing cable 22; one end of the fork lug 245 is connected with one end of the second connecting rod 243 far away from the sleeve 242, a first through hole is formed in the other end of the fork lug 245, a part of the support frame 10 is inserted into the fork lug 245, a second through hole corresponding to the first through hole is formed in the support frame 10, and a pin shaft 246 is arranged in the first through hole and the second through hole in a penetrating mode to fixedly connect the fork lug 245 and the support frame 10.
During production, the pressing heads 244 are directly formed at the end parts of the first bearing rope 21 and the second bearing rope 22, the pressing heads 244 can be in threaded connection with the first connecting rod 241, or the pressing heads 244 and the first connecting rod 241 are directly connected into a whole during production, and only the first connecting rod 241 and the sleeve 242 are required to be connected together during assembly.
The second connecting rod 243 is fixedly connected with the fork lug 245, and after a part of the support frame 10 is inserted into the fork lug 245, the fork lug 245 and the support frame 10 are fixed together through the pin shaft 246, so that the fixed connection between the adjusting sleeve 242 and the support frame 10 is realized, and the installation is convenient and quick.
In some embodiments, the connection 33 is a rigid rod. The rigid rod piece is arranged between the first bearing cable 21 and the second bearing cable 22, so that the first bearing cable 21 and the second bearing cable 22 can be prevented from changing the distance between the first bearing cable 21 and the second bearing cable 22 under the tensioning action of the first inhaul cable 31 and the second inhaul cable 32, and the stability of the photovoltaic bracket is improved.
Further, as shown in fig. 4, the cable assembly further includes a first fixing member 34 and two second fixing members 35, the first cable 31, the second cable 32 and the stabilizing cable 23 are connected by the first fixing member 34, one end of the connecting member 33, the first load-bearing cable 21 and the first cable 31 are fixedly connected by one second fixing member 35, and the other end of the connecting member 33, the second load-bearing cable 22 and the second cable 32 are fixedly connected by the other second fixing member 35.
As shown in fig. 6, the first fixing member 34 includes a first cable clip 341 and a second cable clip 342 that are disposed opposite to each other; a first accommodating groove is formed in one side, close to the second cable clamp 342, of the first cable clamp 341, and a first lug 3411 is formed in the other side of the first cable clamp 341; a second accommodating groove corresponding to the first accommodating groove is formed in one side, close to the first rope clamp 341, of the second rope clamp 342, and a second lug 3421 is formed in the other side of the second rope clamp 342; the stabilizing cable 23 is clamped between the first cable clamp 341 and the second cable clamp 342 and is positioned in the first accommodating groove and the second accommodating groove, the first cable 31 is fixedly connected with the first lug 3411, and the second cable 32 is fixedly connected with the second lug 3421.
The first cable clamp 341 and the second cable clamp 342 are fixed together through bolts, and the stabilizing cable 23 is clamped between the first cable clamp 341 and the second cable clamp 342 and is positioned in the accommodating hole formed by the first accommodating groove and the second accommodating groove so as to fix the first fixing piece 34 on the stabilizing cable 23. The first cable clamp 341 is provided with a first lug 3411, the second cable clamp 342 is provided with a second lug 2422, the first cable 31 is connected with the first lug 3411, and the second cable 32 is connected with the second lug 3421, so that the connection of the first cable 31, the second cable 33 and the stabilizing cable 23 is realized.
As shown in fig. 7, the second fixing member 35 includes a third cable clip 351 and a fourth cable clip 352 disposed opposite to each other; a third accommodating groove is formed in one side, close to the fourth cable clamp 352, of the third cable clamp 351, and a third lug 3511 and a fourth lug 3512 are formed in the other side of the third cable clamp 351; a fourth receiving groove corresponding to the third receiving groove is provided at one side of the fourth cable clamp 352 adjacent to the third cable clamp 351.
When the second fixing member 35 is disposed on the first load-bearing cable 21, the first load-bearing cable 21 is clamped between the third cable clamp 351 and the fourth cable clamp 352 and is located in the third accommodating groove and the fourth accommodating groove, the connecting member 33 is fixedly connected with the third lug 3511, and the first cable 31 is fixedly connected with the fourth lug 3512; the third cable clamp 351 and the fourth cable clamp 352 are connected together through bolts to fix the second fixing member 35 on the first load-bearing cable 21, the third cable clamp 351 is arranged on one side of the first load-bearing cable 21 close to the second load-bearing cable 22, the fourth cable clamp 352 is arranged on one side of the first load-bearing cable 21 far away from the second load-bearing cable 22, and the third cable clamp 351 is provided with a third lug 3511 and a fourth lug 3512 on one side of the third cable clamp 351 close to the second load-bearing cable 21. The connector 33 is connected to a third lug 3511 on the third cable clamp 351 and the first cable 31 is connected to a fourth lug 3512 on the third cable clamp 351 to secure the connector 33, the first cable 31 and the first load-bearing cable 21 together.
When the second fixing member 35 is disposed on the second load-bearing cable 22, the second load-bearing cable 22 is clamped between the third cable clamp 351 and the fourth cable clamp 352 and is located in the third accommodating groove and the fourth accommodating groove, the connecting member 33 is fixedly connected with the third lug 3511, and the second stay cable 32 is fixedly connected with the fourth lug 3512. The second fixing member 35 is disposed on the second load-bearing cable 22 in the same manner as the first load-bearing cable 21, and will not be described in detail herein.
The present invention further provides an embodiment of a photovoltaic system, as shown in fig. 1 to 8, including the flexible photovoltaic support of any of the above embodiments and a plurality of photovoltaic modules 40, where the plurality of photovoltaic modules 40 are disposed on the first load-bearing cable 21 and the second load-bearing cable 22 at intervals along the first direction. Each of the first and second load-bearing cables 21 and 22 is provided with a plurality of photovoltaic modules 40 at intervals along the first direction.
The photovoltaic module 40 is fixed through the pressing block 51 and the clamping hoop 52, the clamping hoop 52 is arranged on one side of the pressing block 51, the clamping hoop 52 is fixedly connected with the pressing block 51 through bolts, the first bearing rope 21 or the second bearing rope 22 is clamped between the clamping hoop 52 and the pressing block 51, the pressing block 51 is fixed on the first bearing rope 21 or the second bearing rope 22, and then the frame of the photovoltaic module 40 is fixed with the pressing block 51 through bolts, so that two ends of the photovoltaic module 40 are respectively fixed on the first bearing rope 21 and the second bearing rope 22.
The installation method of the photovoltaic system comprises the following steps:
after the prefabricated pipe pile is installed and positioned, the support frame 10 is fixedly installed on the ground, the first inclined cable 25 and the second inclined cable 26 are installed at corresponding positions of the support frame 10, and the first bearing cable 21 and the second bearing cable 22 are installed at the upper part of the support frame 10 through the adjusting sleeve 24. In order to reduce the initial prestress values of the first bearing cable 21 and the second bearing cable 22, the photovoltaic bracket can be close to practical application, and the first bearing cable 21 and the second bearing cable 22 have initial downward arch deflection with a certain radian.
Then the first bearing rope 21 and the second bearing rope 22 are connected to the stabilizing rope 23 through the first fixing piece 34 and the second fixing piece 35 through the first guy rope 31 and the second guy rope 32, the stabilizing rope 23 has initial arch deflection with a certain radian, and meanwhile the connecting piece 33 is installed at the corresponding positions of the first bearing rope 21 and the second bearing rope 22 through the first fixing piece 34, so that the first bearing rope 21 and the second bearing rope 22 are prevented from being changed in distance due to tensioning of the first guy rope 31 and the second guy rope 32.
After the installation of the components is completed, only the stabilizing rope 23 needs to be tensioned and fixed on the upright post 11 of the support frame 10 or the support seat at the bottom of the support frame 10, and then the photovoltaic module 40 is fixedly installed through the clamp 52 and the pressing block 51. Finally, by adjusting the adjustment sleeves 24 on the first and second load-bearing cables 21, 22, the initial stress values of the first and second load-bearing cables 21, 22 are changed to change the structural vibration frequency, so that the photovoltaic module 40 is prevented from being damaged by resonance generated by the photovoltaic bracket under the action of wind load.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. An adjustable pre-stressed large-span flexible photovoltaic bracket, comprising:
the support frames are arranged at intervals along the first direction;
the bearing cable assembly comprises a first bearing cable, a second bearing cable, a stabilizing cable and a plurality of adjusting sleeves, wherein the first bearing cable and the second bearing cable are arranged at intervals along a second direction, the second direction is perpendicular to the first direction, the stabilizing cable is positioned below the first bearing cable and the second bearing cable, one end of the stabilizing cable is connected with one supporting frame, and the other end of the stabilizing cable is connected with the other supporting frame; the adjusting sleeve is connected with the supporting frame and at least one of the first bearing cable, the second bearing cable and the stabilizing cable, and the length of the adjusting sleeve is adjusted to adjust the prestress on the first bearing cable, the second bearing cable or the stabilizing cable;
the plurality of cable assemblies are arranged along the first direction at intervals, each cable assembly comprises a first cable, a second cable and a connecting piece, one end of each first cable is connected with each first bearing cable and one end of each connecting piece, one end of each second cable is connected with each second bearing cable and the other end of each connecting piece, the other end of each first cable is connected with the other end of each second cable and each stabilizing cable, so that each first bearing cable and each second bearing cable have initial downward arch deflection with a certain radian, and each stabilizing cable has initial upward arch deflection with a certain radian.
2. The adjustable pre-stressed large-span flexible photovoltaic bracket according to claim 1, wherein the adjusting sleeve comprises a first connecting rod, a sleeve and a second connecting rod which are sequentially connected, one end of the first connecting rod is connected with the first bearing rope, the second bearing rope or the stabilizing rope, the other end of the first connecting rod is in threaded connection with one end of the sleeve, the other end of the sleeve is in threaded connection with one end of the second connecting rod, and the other end of the second connecting rod is connected with the supporting frame.
3. The adjustable pre-stressed large-span flexible photovoltaic bracket according to claim 2, wherein the adjusting sleeve further comprises a pressure head, a fork ear and a pin shaft, one end of the pressure head is connected with one end of the first connecting rod far away from the sleeve, and the other end of the pressure head is connected with the first bearing cable or the second bearing cable; one end of the fork lug is connected with one end of the second connecting rod, which is far away from the sleeve, a first through hole is formed in the other end of the fork lug, a part of the support frame is inserted into the fork lug, a second through hole corresponding to the first through hole is formed in the support frame, and the pin shaft penetrates through the first through hole and the second through hole to be fixedly connected with the fork lug and the support frame.
4. An adjustable pre-stressed large-span flexible photovoltaic support according to any of claims 1 to 3, wherein said connectors are rigid rods.
5. The adjustable pre-stressed large-span flexible photovoltaic bracket according to claim 4, wherein the guy cable assembly further comprises a first fixing member and two second fixing members, wherein the first guy cable, the second guy cable and the stabilizing cable are connected through the first fixing member, one end of the connecting member, the first bearing cable and the first guy cable are fixedly connected through one of the second fixing members, and the other end of the connecting member, the second bearing cable and the second guy cable are fixedly connected through the other of the second fixing members.
6. An adjustable pre-stressed large-span flexible photovoltaic support as described in claim 5, wherein,
the first fixing piece comprises a first cable clamp and a second cable clamp which are oppositely arranged;
a first accommodating groove is formed in one side, close to the second rope clip, of the first rope clip, and a first lug is arranged on the other side of the first rope clip; a second accommodating groove corresponding to the first accommodating groove is formed in one side, close to the first rope clip, of the second rope clip, and a second lug is arranged on the other side of the second rope clip;
the stabilizing cable clamp is arranged between the first cable clamp and the second cable clamp and is positioned in the first accommodating groove and the second accommodating groove, the first inhaul cable is fixedly connected with the first lug, and the second inhaul cable is fixedly connected with the second lug.
7. An adjustable pre-stressed large-span flexible photovoltaic support as described in claim 5, wherein,
the second fixing piece comprises a third cable clamp and a fourth cable clamp which are oppositely arranged;
a third accommodating groove is formed in one side, close to the fourth cable clamp, of the third cable clamp, and a third lug and a fourth lug are arranged on the other side of the third cable clamp; a fourth accommodating groove corresponding to the third accommodating groove is formed in one side, close to the third cable clamp, of the fourth cable clamp;
the first bearing cable is clamped between the third cable clamp and the fourth cable clamp and is positioned in the third accommodating groove and the fourth accommodating groove, the connecting piece is fixedly connected with the third lug, and the first cable is fixedly connected with the fourth lug; or;
the second bearing cable is clamped between the third cable clamp and the fourth cable clamp and is positioned in the third accommodating groove and the fourth accommodating groove, the connecting piece is fixedly connected with the third lug, and the second cable is fixedly connected with the fourth lug.
8. An adjustable pre-stressed large-span flexible photovoltaic bracket according to any of claims 1-3, wherein the number of load-bearing cable assemblies is plural, and wherein plural load-bearing cable assemblies are disposed at intervals along the second direction.
9. An adjustable pre-stressed large-span flexible photovoltaic bracket system, comprising the adjustable pre-stressed large-span flexible photovoltaic bracket of any of claims 1-8 and a plurality of photovoltaic modules, the plurality of photovoltaic modules being disposed on the first load-bearing cable and the second load-bearing cable at intervals along the first direction.
10. The adjustable pre-stressed large-span flexible photovoltaic bracket system of claim 9, further comprising a press block and a clip, wherein the press block is secured to the first load-bearing cable or the second load-bearing cable by the clip, and wherein the photovoltaic module is secured to the press block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386451.8A CN114865997B (en) | 2022-04-13 | 2022-04-13 | Adjustable prestress large-span flexible photovoltaic bracket and system |
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| CN202210386451.8A CN114865997B (en) | 2022-04-13 | 2022-04-13 | Adjustable prestress large-span flexible photovoltaic bracket and system |
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| CN114865997B true CN114865997B (en) | 2023-07-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116760337A (en) * | 2023-05-06 | 2023-09-15 | 中国水电顾问集团贵阳勘测设计研究院岩土工程有限公司 | Large-span prestress hyperbolic suspension cable photovoltaic bracket and mounting method thereof |
| CN116743037B (en) * | 2023-06-19 | 2024-01-02 | 广东永光新能源设计咨询有限公司 | Photovoltaic flexible support with rope structure |
| CN116707399B (en) * | 2023-08-07 | 2023-12-15 | 苏州聚晟太阳能科技股份有限公司 | Photovoltaic bracket system |
| CN117081489B (en) * | 2023-08-25 | 2024-05-03 | 哈尔滨工业大学 | Large-span fish belly type single-layer tracking type flexible photovoltaic bracket system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108365799B (en) * | 2018-03-27 | 2023-11-03 | 东南大学 | Suspension type flexible photovoltaic support unit and photovoltaic support |
| CN110011598B (en) * | 2019-04-16 | 2024-03-26 | 浙江中新能源发展有限公司 | Prestressed double-layer suspension cable photovoltaic bracket |
| CN215498805U (en) * | 2021-12-09 | 2022-01-11 | 深圳市安泰科能源环保股份有限公司 | Flexible photovoltaic support |
| CN113904616B (en) * | 2021-12-09 | 2022-03-11 | 深圳市安泰科能源环保股份有限公司 | Flexible photovoltaic support |
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