A three-cable photovoltaic flexible support system

Abstract

The present invention discloses a three-cable photovoltaic flexible bracket system, which belongs to the field of photovoltaic bracket technology and can solve the problem that traditional fixed photovoltaic brackets cannot be used and installed under complex mountain conditions, which reduces land use efficiency and affects the overall photovoltaic power generation capacity. The system includes: two end fixing units, symmetrically arranged at both ends of the erection area; multiple middle support units, distributed in a row between the two end fixing units; a first main cable and a second main cable, one end of which is connected to an end fixing unit, and the other end passes through the top ends of multiple middle support units in turn and is connected to the other end fixing unit; multiple inverted tripods, the two ends of the bottom sides of which are respectively fixed on the first main cable and the second main cable; a secondary cable, one end of which is connected to an end fixing unit, and the other end passes through the vertices of multiple inverted tripods and the middle of the tops of multiple middle support units in turn and is connected to the other end fixing unit. The present invention is used for photovoltaic module support.

Description

Technical Field

[0001] The invention relates to a three-cable photovoltaic flexible support system, belonging to the technical field of photovoltaic supports. Background Art

[0002] In mountain photovoltaic projects, steep slopes, undulations and various irregular terrain conditions are often encountered. Under these complex mountain conditions, traditional fixed photovoltaic bracket structures have more and more disadvantages. Due to the complexity of the terrain conditions, traditional fixed photovoltaic brackets cannot be used and installed in many cases, which reduces land use efficiency and affects the overall photovoltaic power generation capacity. Summary of the invention

[0003] The present invention provides a three-cable photovoltaic flexible bracket system, which can solve the problem that traditional fixed photovoltaic brackets cannot be used and installed under complex mountain conditions, reducing land use efficiency and affecting the overall photovoltaic power generation capacity.

[0004] The present invention provides a three-cable photovoltaic flexible support system, the system comprising:

[0005] Two end fixing units are symmetrically arranged at two ends of the erection area, and the bottom ends thereof are fixed on the ground of the erection area;

[0006] A plurality of middle support units are arranged in a row between the two end fixing units, and the bottom ends of the middle support units are fixed on the ground in the erection area;

[0007] The first main cable and the second main cable have one end connected to an end fixing unit, and the other end passes through the top ends of the plurality of middle support units in sequence and is connected to another end fixing unit; the erection height of the first main cable is greater than the erection height of the second main cable;

[0008] A plurality of inverted tripods are spaced apart from the plurality of middle support units and distributed between the two end fixing units, and the two ends of the bottom sides thereof are respectively fixed on the first main cable and the second main cable;

[0009] One end of the auxiliary cable is connected to an end fixing unit, and the other end passes through the vertices of the multiple inverted tripods and the middle of the tops of the multiple middle supporting units in sequence and is connected to another end fixing unit.

[0010] Optionally, the end fixing unit includes:

[0011] Two end pile foundations, the bottom ends of which are fixed on the ground in the erection area, and the top ends of which are fixed with a first bracket, and the ends of the first main cable, the second main cable and the auxiliary cable are all connected to the first bracket;

[0012] Two pull-out piles are arranged on the side of the two end pile foundations away from the auxiliary cable and are distributed in a rectangular shape with the two end pile foundations. Their bottom ends are fixed on the ground in the erection area, and their top ends are connected to the tops of the corresponding end pile foundations through tie rods.

[0013] Optionally, the first bracket includes:

[0014] The first anchoring module and the second anchoring module are respectively fixed on the top of the two end pile foundations, and the height of the first anchoring module is greater than the height of the second anchoring module; the end of the first main cable is connected to the first anchoring module, and the end of the second main cable is connected to the second anchoring module;

[0015] The cross-connecting beam has two ends at the top respectively fixed on the first anchoring module and the second anchoring module, and two ends at the bottom respectively connected to the two end pile foundations through the first clamp; the ends of the auxiliary cables are connected at the intersection of the cross-connecting beams.

[0016] Optionally, the first anchoring module and the second anchoring module both include:

[0017] A column fixed on the top of the end pile foundation; the height of the column in the first anchoring module is greater than the height of the column in the second anchoring module;

[0018] Anchors are fixed on the top of the columns; the end of the first main cable is connected to the anchor of the first anchoring module, and the end of the second main cable is connected to the anchor of the second anchoring module.

[0019] Optionally, the end fixing unit further includes:

[0020] The ground beam is connected between the two end pile foundations, between the two pull-out piles, and between the pull-out piles and their corresponding end pile foundations.

[0021] Optionally, the middle support unit includes:

[0022] The middle pile foundation, the bottom end of which is fixed to the ground in the erection area;

[0023] The second bracket is fixed on the top of the middle pile foundation, and has main cable pulleys at both ends. The middle part is provided with a first lifting lug. The first main cable and the second main cable are respectively passed through two main cable pulleys, and the auxiliary cable is passed through the first lifting lug.

[0024] Optionally, the second bracket includes:

[0025] A support column, the bottom end of which is fixed to the top of the middle pile foundation, and a cable passage is provided on the support column, wherein the first lifting lug is arranged in the cable passage;

[0026] An inclined beam, the middle of which is fixed to the top of the supporting column, and the surfaces of both ends of the inclined beam away from the supporting column are provided with pulleys for passing main cables;

[0027] Two oblique braces have one end connected to the two ends of the oblique beam respectively, and the other end connected to the middle pile foundation through a second hoop.

[0028] Optionally, the end fixing unit further includes:

[0029] The two third brackets are respectively fixed on the top ends of the two pull-out piles, and are respectively connected to the first brackets on the top ends of the corresponding end pile foundations through pull rods.

[0030] Optionally, the system further includes:

[0031] The anchor piles are anchored on the ground in the erection area; two adjacent middle support units and the inverted triangle frame therebetween are respectively connected to the anchor piles through stabilizing cables.

[0032] Optionally, the inverted tripod comprises:

[0033] Three stabilizing rods are connected in sequence to form an inverted triangle; two ends of the stabilizing rods forming the bottom of the inverted triangle are provided with fixing rings on their surfaces away from the ground, and the inverted triangle frame is fixed to the first main cable and the second main cable through corresponding fixing rings;

[0034] A secondary cable ring is provided on the stabilizing rod at the vertex position of the inverted triangle, and the secondary cable is passed through the secondary cable ring.

[0035] Optionally, the third bracket includes:

[0036] A horizontal plate fixed to the top of the pull-out piles;

[0037] A vertical plate is fixed on the horizontal plate and is provided with a connecting hole; a second lifting lug is provided on the first bracket, and both ends of the pull rod are respectively connected to the connecting hole and the second lifting lug through rigging.

[0038] The beneficial effects that the present invention can produce include:

[0039] The three-cable photovoltaic flexible support system provided by the present invention is formed by symmetrically arranging two end fixing units at both ends of the mounting area, and distributing a plurality of inverted tripods and a plurality of middle supporting units in a row between the two end fixing units to fix two main cables and one auxiliary cable, thereby forming a flexible three-cable photovoltaic support system. The support system can arrange and install photovoltaic components under relatively complex terrain, and the photovoltaic inclination angle is adjustable, the overall structure is stable, and the layout is flexible.

[0040] The three-cable photovoltaic flexible support system provided by the present invention is suitable for a wide range of terrains, and can arrange and install photovoltaic modules in relatively complex terrains, thereby improving land utilization rate; the support structure is overall stable and flexible in arrangement, ensuring the optimal power generation inclination angle, extending the light receiving time, and improving the power generation capacity compared to the traditional fixed support arrangement method that follows the slope; the photovoltaic array has a large span, and the net height can be adjusted according to the requirements of local land properties to realize the utilization of the lower space; the number of pile foundations is greatly reduced compared to fixed supports, shortening the construction period, improving installation efficiency, and having good comprehensive benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a three-cable photovoltaic flexible support system provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the structure of an end fixing unit provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a first bracket structure provided in an embodiment of the present invention Figure 1 ;

[0044] Figure 4 A schematic diagram of a first bracket structure provided in an embodiment of the present invention Figure 2 ;

[0045] Figure 5 A schematic diagram of the structure of a second bracket provided in an embodiment of the present invention;

[0046] Figure 6 A schematic diagram of a third bracket structure provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of the structure of a stabilizing cable and an anchor pile provided in an embodiment of the present invention;

[0048] Figure 8 A schematic diagram of a double-group three-cable photovoltaic flexible support structure provided by an embodiment of the present invention;

[0049] Fig. 9 A schematic diagram of the assembly process of the three-cable photovoltaic flexible support system provided in an embodiment of the present invention.

[0050] Reference numerals:

[0051] 1. End pile foundation; 2. Pull-out pile; 3. Pull rod; 4. First bracket; 401. High column; 402. Low column; 403. Anchor; 404. Second lifting lug; 405. Cross-connecting beam; 406. Main cable hole; 407. First clamp; 408. Third lifting lug; 5. Ground beam; 6. First main cable; 7. Second main cable; 8. Auxiliary cable; 9. Inverted tripod; 901. Stabilizing rod; 902. Fixed cable ring; 903. Auxiliary cable ring; 10. Middle pile foundation; 11. Second bracket; 111. Main cable pulley; 112. First lifting lug; 113. Support column; 114. Oblique beam; 115. Oblique brace; 116. Second clamp; 12. Third bracket; 121. Horizontal plate; 122. Vertical plate; 123. Connection hole; 13. Ground anchor pile; 14. Stabilizing cable. DETAILED DESCRIPTION

[0052] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0053] The embodiment of the present invention provides a three-cable photovoltaic flexible support system, such as Figures 1 to 8 As shown, the system comprises:

[0054] The two end fixing units are symmetrically arranged at two ends of the erection area, and the bottom ends thereof are fixed on the ground of the erection area.

[0055] A plurality of middle support units are distributed in a row between the two end fixing units, and the bottom ends of the middle support units are fixed on the ground of the erection area.

[0056] One end of the first main cable 6 and the second main cable 7 are connected to an end fixing unit, and the other end passes through the top ends of multiple middle support units in sequence and is connected to another end fixing unit; the installation height of the first main cable 6 is greater than the installation height of the second main cable 7.

[0057] A plurality of inverted tripods 9 are distributed between the two end fixing units at intervals with the plurality of middle supporting units, and the two ends of the bottom sides thereof are fixed on the first main cable 6 and the second main cable 7 respectively.

[0058] One end of the auxiliary cable 8 is connected to an end fixing unit, and the other end passes through the vertices of the multiple inverted tripods 9 and the middle of the tops of the multiple middle supporting units in sequence and is connected to another end fixing unit.

[0059] refer to Figure 2As shown, the end fixing unit includes: two end pile foundations 1, whose bottom ends are fixed on the ground in the erection area, and whose top ends are fixed with a first bracket 4, and the ends of the first main cable 6, the second main cable 7 and the auxiliary cable 8 are all connected to the first bracket 4; two pull-out piles 2, which are arranged on the side of the two end pile foundations 1 away from the auxiliary cable 8, and are distributed in a rectangular shape with the two end pile foundations 1, whose bottom ends are fixed on the ground in the erection area, and whose top ends are connected to the top of the corresponding end pile foundation 1 through a tie rod 3; a ground beam 5, which is connected between the two end pile foundations 1, between the two pull-out piles 2, and between the pull-out piles 2 and the corresponding end pile foundations 1. Among them, the tie rod 3 can be a basket bolt tie rod.

[0060] Specifically, refer to Figure 3 and Figure 4 As shown, the first bracket 4 includes: a first anchoring module and a second anchoring module, which are respectively fixed on the tops of the two end pile foundations 1, and the height of the first anchoring module is greater than the height of the second anchoring module; the end of the first main cable 6 is connected to the first anchoring module, and the end of the second main cable 7 is connected to the second anchoring module; a cross-connecting beam 405, whose top ends are respectively fixed on the first anchoring module and the second anchoring module, and whose bottom ends are respectively connected to the two end pile foundations 1 through the first clamp 407; the ends of the auxiliary cables 8 are connected at the intersection of the cross-connecting beams 405.

[0061] The above-mentioned first anchoring module and second anchoring module both include: a column fixed on the top of the end pile foundation 1; the height of the column in the first anchoring module is greater than the height of the column in the second anchoring module; an anchor 403 fixed on the top of the column; the end of the first main cable 6 is connected to the anchor 403 of the first anchoring module, and the end of the second main cable 7 is connected to the anchor 403 of the second anchoring module.

[0062] In practical applications, the columns in the first anchoring module can be recorded as high columns 401, and the columns in the second anchoring module can be recorded as low columns 402; when assembling, first connect the high column 401 in the first bracket 4 with the anchor 403, the anchor 403 is provided with a main cable hole 406, and the bottom of the high column 401 is connected with a second ear 404. When installing, ensure that the second ear 404 is close to the third bracket 12. The second ear 404 should be on the same plane as the third bracket 12 to ensure that the turnbuckle bolt rod 3 connects the first bracket 4 with the third bracket 12. The installation method and function of the low column 402 are similar to those of the high column 401, except that the low column 402 is smaller in height than the high column 401. The assembled first bracket 4 is welded to the steel plate at the top of the end pile foundation 1, and then the high column 401 is connected to the low column 402 through the X-shaped cross-connecting beam 405. The lower part of the cross-connecting beam 405 is connected to the end pile foundation 1 through the first clamp 407 to ensure the overall stability of the end bracket. The third lifting lug 408 is set at the intersection of the cross-connecting beam 405 to fix the auxiliary cable 8.

[0063] In the embodiment of the present invention, the end fixing unit further includes: two third brackets 12, which are respectively fixed on the top of the two pull-out piles 2, and are respectively connected to the first brackets 4 on the top of the corresponding end pile foundations 1 through the pull rods 3.

[0064] refer to Figure 6 As shown, the third bracket 12 includes: a horizontal plate 121, fixed on the top of the pull-out pile 2; a vertical plate 122, fixed on the horizontal plate 121, and provided with a connecting hole 123; a second lifting ear 404 is provided on the first bracket 4, and the two ends of the pull rod 3 are respectively connected to the connecting hole 123 and the second lifting ear 404 through rigging.

[0065] In actual application, the third bracket 12 includes a horizontal plate 121 and a vertical plate 122. The horizontal plate 121 and the vertical plate 122 can both be steel plates, which are connected by welding. A connecting hole 123 is provided on the vertical plate 122. The horizontal plate 121 is welded to the end steel plate of the anti-pullout column. Rigging is provided at both ends of the basket bolt pull rod 3. The rigging is respectively connected to the connecting hole 123 of the third bracket 12 and the second lifting ear 404 of the first bracket 4, and then the rigging is connected and tightened by the basket bolt.

[0066] refer to Figure 5 As shown, the middle support unit includes: a middle pile foundation 10, the bottom end of which is fixed on the ground in the erection area; a second bracket 11, fixed to the top of the middle pile foundation 10, with main cable pulleys 111 at both ends, a first lifting ear 112 in the middle, the first main cable 6 and the second main cable 7 are respectively passed through the two main cable pulleys 111, and the auxiliary cable 8 is passed through the first lifting ear 112.

[0067] Among them, the second bracket 11 includes: a support column 113, whose bottom end is fixed to the top of the middle pile foundation 10, and has a cable passage thereon, and a first lifting ear 112 is arranged in the cable passage; an inclined beam 114, whose middle part is fixed to the top of the support column 113, and whose surfaces at both ends away from the support column 113 are provided with main cable pulleys 111; two inclined braces 115, one end of which is respectively connected to the two ends of the inclined beam 114, and the other end is connected to the middle pile foundation 10 through a second clamp 116.

[0068] When assembling the second bracket 11, first connect the inclined beam 114 with the support column 113, and set the main cable pulleys 111 at both ends of the inclined beam 114, connect the two inclined braces 115 with the two ends of the inclined beam 114 respectively, and then install the support column 113 on the appropriate position of the top steel plate of the middle pile foundation 10, and finally set the second clamp 116 at the appropriate position of the middle pile foundation 10, and connect the two inclined braces 115 with the second clamp 116. The first lifting ear 112 in the cable passage is used to fix the auxiliary cable 8.

[0069] The remaining second brackets 11 of the same group are installed and constructed in this way. After the first bracket 4, the second bracket 11 and the third bracket 12 of the same group are all installed, the first main cable 6 and the second main cable 7 are deployed, and the first main cable 6 and the second main cable 7 are inserted into the main cable hole 406 from the end, pass through several main cable pulleys 111, and finally pass out from the main cable hole 406 at the other end. The main cable of appropriate size is reserved and then cut off, and anchors are set at both ends of the first main cable 6 and the second main cable 7, and then the first main cable 6 and the second main cable 7 are tensioned, and fixed after the tensioning is completed.

[0070] refer to Figure 7 As shown, the inverted tripod 9 includes: three stabilizing rods 901, which are connected in sequence to form an inverted triangle shape; fixed cable rings 902 are provided on the surfaces of both ends of the stabilizing rods 901 forming the bottom side of the inverted triangle shape away from the ground, and the inverted tripod 9 is fixed to the first main cable 6 and the second main cable 7 through the corresponding fixed cable rings 902; a secondary cable ring 903 is provided on the stabilizing rod 901 at the vertex position of the inverted triangle shape, and the secondary cable 8 is inserted into the secondary cable ring 903.

[0071] In practical applications, the three stabilizing rods 901 can be connected into an inverted triangle shape, and the inverted tripod 9 can be fixed to the two tensioned main cables through the two fixing cable rings 902 on the inverted tripod 9. Then one end of the auxiliary cable 8 is fixed to the third lifting ear 408 of the first bracket 4, and the other end is passed through the auxiliary cable hole at the bottom of the inverted tripod 9, and fixed to the first lifting ear 112 of the second bracket 11 after appropriate tensioning.

[0072] In the embodiment of the present invention, the system further comprises: a ground anchor pile 13 anchored on the ground in the erection area; two adjacent middle support units and the inverted tripod 9 therebetween are connected to the ground anchor pile 13 via a stabilizing rope 14 respectively.

[0073] Another embodiment of the present invention provides a method for assembling a three-cable photovoltaic flexible support system, such as Fig. 9 As shown, the assembly method comprises the following steps:

[0074] (1) Measure and lay out all the pile foundation points (ends and middles) according to the design coordinates and make clear marks.

[0075] (2) After the pile position is set out, the drilling rig is put in place, the drill bit tip is aligned with the pile position, the alignment error is ≤10mm, the drilling rig is adjusted to be flat and stable, and the main drill rod is vertical to the ground, and the main rod verticality is ≤10mm. The diameter of the drill rod is not greater than 0.9 times the pile diameter. The technician sets a reference scale line at the appropriate position of the drill rod so that the drilling depth meets the design requirements. Before drilling, it is necessary to conduct on-site exploration to determine the position and depth of the pilot hole. The hole diameter and hole depth should meet the design requirements. The verticality must be ensured during the drilling process to avoid bending and deviation. Hole quality requirements: The center position deviation of the pile hole is ±10mm, the allowable deviation of the pile depth is -10mm, and the verticality deviation of the drill hole is ≤5‰ of the pile length.

[0076] (3) After the drilling is completed, the pile driver clamps the pile head and straightens it into place. After the prefabricated pile is inserted into the pile hole, two theodolites (at an angle close to 90 degrees) are used to control the verticality of the pile in both directions. If the conditions are not met, two plumb bobs or other methods can be used to control the verticality. After the adjustment of the pile driver guide, ensure that the position and verticality meet the requirements. Before driving the pile, there should be scale reference marks on the pile body to observe the depth of penetration and penetration. During the sinking of the pile, observe the verticality of the pile body to prevent deviation. The pile driving is completed when the pile body sinks to the designed depth. After all the pile operations are completed, two pull-out columns need to be set at appropriate positions outside the end pile foundation 1, and steel plates are set on the top of the columns. Finally, the end ground beam 5 is operated to connect the end pile foundation 1 and the pull-out pile 2 to form a whole, thereby increasing the overall stability of the structure.

[0077] During the pile driving process, the verticality of the pile (deviation < 5‰ of the pile body), elevation and coordinate deviation must be strictly controlled, otherwise the entire collapse angle will be affected. Specific deviation requirements: The X-axis and Y-axis coordinates of the end pile foundation 1 are allowed to have a deviation of ±25mm, and the Z-axis is allowed to have a deviation of ±5mm; the X-axis and Y-axis of the middle pile foundation 10 are allowed to have a deviation of ±15mm, and the Z-axis is allowed to have a deviation of +20mm.

[0078] (4) After the pile foundation and ground beam 5 are completed, the bracket can be installed. The steel structure bracket must be manufactured in a professional factory, and the certificate of conformity and warranty must be provided on site. The bracket types are divided into the first bracket 4, the second bracket 11 and the third bracket 12. Before assembling the bracket, check whether the steel components correspond to the foundation according to the numbers of different specifications. Only after verification can the bracket be assembled. The assembled first bracket 4, the second bracket 11 and the third bracket 12 are hoisted and stabilized above the end pile foundation 1, the middle pile foundation 10 and the pull-out pile 2 respectively. After the operator uses a ladder to reach the appropriate height, the bracket is supported to the steel plate at the top of the pile. After accurately adjusting the position, it is fixed and welded. The bracket base is fully welded on the steel plate. Before welding, check the center line of the support again to ensure that it coincides with the center of the pile head steel plate. The quality level of the weld meets the design requirements, and the installation allowable angle error is controlled within 1°. The first bracket 4 and the second bracket 11 are connected to the pile foundation through a clamp to enhance the overall stability of the structure.

[0079] The secondary transportation and lifting process of the steel support should be handled with care to avoid violent turning, which may cause the support to be bumped and deformed or the galvanized layer to be damaged. The rust removal and anti-corrosion of the steel components must meet the design requirements.

[0080] (5) After the installation of the above brackets is completed, the laying and tensioning and anchoring of the two prestressed steel strand main cables will begin. The prestressed steel strand drum must be fixedly placed on the pay-off drum, the winch is placed at the predetermined position, fixed and powered on, and after the equipment is debugged, the steel strand and the traction rope are firmly fixed, and the winch is used to pull the two steel strands at the location to the predetermined position, measure the length and cut it, and then put all the steel strands in place one by one. Avoid friction between the steel strand and the components during the laying process to avoid damage to the components and the protective layer of the steel strand.

[0081] The tensioning principle is to control the tensioning force as the main force and deflection control as the auxiliary force. When using a prestressed high-pressure oil pump for tensioning, the main cable is initially controlled within 2MP. After checking that there is no problem with the stress on the steel structure, continue to tension it to the design value. When the span is small, one end can be tensioned. When the span is too large (more than 180m) or the terrain is more complex, it is advisable to tension both ends at the same time. Immediately after the main cable is tensioned, all the middle support beams are installed close to both sides of the roller with 15# wire rope clamps, and the outer side of the end support is fastened with a special main cable anchor and protected with a special anchor sheath.

[0082] Use a tension meter to measure the tension of the main cable. Measure once after tensioning is completed and once after the components are installed. Keep a record of the measurements (sample about 10%). The deflection control standard for the initial tensioning is 0.01L (L is the distance between the two brackets). After the components are installed, the deflection control standard for the main cable is 0.02L. If the requirements are not met, a second tensioning is required until the requirements are met. During the tensioning of the main cable, focus on checking whether the first bracket 4 and the second bracket 11 have abnormal deformation. If any abnormality is found, stop tensioning and correct it in time. During the tensioning process, in addition to the tensioning workers, patrol personnel should be deployed to ensure that there are no unrelated personnel nearby when the main cable is operating.

[0083] (6) After the main cable is tensioned, the inverted tripod 9, auxiliary cable 8, stabilizing cable 14, anchor pile 13 and turnbuckle bolt tie rod 3 are installed. The inverted tripod 9 is connected to the two main cables with bolts. The centers of the inverted tripods 9 in the same row must be kept in a straight line. Then the stabilizing cable 14 is connected to the anchor pile 13 through the bottom of the tripod. At the same time, the inverted tripods 9 with the same span are connected with the auxiliary cable 8 to form a three-cable structure. Finally, the first bracket 4 is connected to the third bracket 12 with the turnbuckle bolt tie rod 3. By rotating the turnbuckle bolt, the tie rod 3 is put into a stressed state, which has the function of resisting tension and preventing structural deformation.

[0084] The present invention forms a stable photovoltaic flexible support structure through pile foundation construction, steel support installation, main and auxiliary cable layout tensioning, and stabilization system installation. After the construction is completed, the flexible support structure can form a stable spatial whole of the photovoltaic module array, effectively resist wind vibration, and greatly reduce the occurrence of photovoltaic panel damage.

[0085] The design span of the present invention can reach 30m~180m, which can truly maximize the utilization of hillside land and space. It has a wide range of application scenarios and can be promoted and applied to high-slope mountains, depressions, and areas with different geological conditions to maximize economic benefits. The present invention effectively saves construction land and consumables, shortens the construction period, saves construction costs, increases power generation per unit area, and greatly improves the input-output ratio, laying a solid foundation for the research and development of more efficient and economical cable-structured flexible photovoltaic support systems and large-scale complex scene applications.

[0086] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A three-cable photovoltaic flexible support system, characterized in that: The system comprises: Two end fixing units are symmetrically arranged at two ends of the erection area, and the bottom ends thereof are fixed on the ground of the erection area; A plurality of middle support units are arranged in a row between the two end fixing units, and the bottom ends of the middle support units are fixed on the ground in the erection area; The first main cable and the second main cable have one end connected to an end fixing unit, and the other end passes through the top ends of the plurality of middle support units in sequence and is connected to another end fixing unit; the erection height of the first main cable is greater than the erection height of the second main cable; A plurality of inverted tripods are spaced apart from the plurality of middle support units and distributed between the two end fixing units, and the two ends of the bottom sides thereof are respectively fixed on the first main cable and the second main cable; A secondary cable, one end of which is connected to an end fixing unit, and the other end of which passes through the vertices of the multiple inverted tripods and the middle of the tops of the multiple middle supporting units in sequence and is connected to another end fixing unit; The middle support unit comprises: The middle pile foundation, the bottom end of which is fixed to the ground in the erection area; A second bracket is fixed to the top of the middle pile foundation, with main cable pulleys at both ends, a first lifting lug at the middle, the first main cable and the second main cable are respectively passed through the two main cable pulleys, and the auxiliary cable is passed through the first lifting lug; The second bracket comprises: A support column, the bottom end of which is fixed to the top of the middle pile foundation, and a cable passage is provided on the support column, wherein the first lifting lug is arranged in the cable passage; An inclined beam, the middle of which is fixed to the top of the supporting column, and the surfaces of both ends of the inclined beam away from the supporting column are provided with main cable pulleys; Two oblique braces have one end connected to the two ends of the oblique beam respectively, and the other end connected to the middle pile foundation through a second hoop.

2. The system according to claim 1, characterized in that The end fixing unit comprises: Two end pile foundations, the bottom ends of which are fixed on the ground in the erection area, and the top ends of which are fixed with a first bracket, and the ends of the first main cable, the second main cable and the auxiliary cable are all connected to the first bracket; Two pull-out piles are arranged on the side of the two end pile foundations away from the auxiliary cable and are distributed in a rectangular shape with the two end pile foundations. Their bottom ends are fixed on the ground in the erection area, and their top ends are connected to the tops of the corresponding end pile foundations through tie rods.

3. The system according to claim 2, characterized in that The first bracket comprises: The first anchoring module and the second anchoring module are respectively fixed on the top of the two end pile foundations, and the height of the first anchoring module is greater than the height of the second anchoring module; the end of the first main cable is connected to the first anchoring module, and the end of the second main cable is connected to the second anchoring module; The cross-connecting beam has two ends at the top respectively fixed on the first anchoring module and the second anchoring module, and two ends at the bottom respectively connected to the two end pile foundations through the first clamp; the ends of the auxiliary cables are connected at the intersection of the cross-connecting beams.

4. The system according to claim 3, characterized in that The first anchoring module and the second anchoring module both include: A column fixed on the top of the end pile foundation; the height of the column in the first anchoring module is greater than the height of the column in the second anchoring module; Anchors are fixed on the top of the columns; the end of the first main cable is connected to the anchor of the first anchoring module, and the end of the second main cable is connected to the anchor of the second anchoring module.

5. The system according to claim 2, characterized in that The end fixing unit further comprises: The ground beam is connected between the two end pile foundations, between the two pull-out piles, and between the pull-out piles and their corresponding end pile foundations.

6. The system according to claim 2, characterized in that The end fixing unit further comprises: The two third brackets are respectively fixed on the top ends of the two pull-out piles, and are respectively connected to the first brackets on the top ends of the corresponding end pile foundations through pull rods.

7. The system according to claim 1, characterized in that The system further comprises: The anchor piles are anchored on the ground in the erection area; two adjacent middle support units and the inverted triangle frame therebetween are respectively connected to the anchor piles through stabilizing cables.

8. The system according to claim 1, characterized in that The inverted tripod comprises: Three stabilizing rods are connected in sequence to form an inverted triangle; two ends of the stabilizing rods forming the bottom of the inverted triangle are provided with fixing rings on their surfaces away from the ground, and the inverted triangle frame is fixed to the first main cable and the second main cable through corresponding fixing rings; A secondary cable ring is provided on the stabilizing rod at the vertex position of the inverted triangle, and the secondary cable is passed through the secondary cable ring.

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