A flexible photovoltaic support based on a large-span cable structure

Abstract

The present invention discloses a flexible photovoltaic bracket based on a large-span cable structure, which relates to the technical field of flexible photovoltaic brackets. It includes: two main support members symmetrically distributed, two symmetrically distributed steel cables are fixedly connected between the two main support members, and a plurality of photovoltaic panels are jointly arranged on the two steel cables; a mounting seat is arranged between the two main support members; there are two symmetrically distributed fixing columns, both of which are fixedly connected to the mounting seat; there are two symmetrically distributed second support frames, which are respectively arranged on adjacent fixing columns. The second support frame is provided with a sliding groove, a fixing member is slidably connected to the sliding groove of the second support frame, the fixing member is fixedly connected with an elastic liquid sac, and an extrusion ring is slidably connected to the fixing member. Through the deformation of the extrusion ring and the deformation of the elastic liquid sac, the present invention buffers the vibration of the steel cable, reduces the vibration amplitude of the steel cable, weakens the dynamic stress superposition of the steel cable at the adjacent extrusion rings, relieves the fatigue effect, and improves the stability of the overall structure.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible photovoltaic brackets, and in particular to a flexible photovoltaic bracket based on a large-span cable structure. Background Art

[0002] A flexible photovoltaic bracket is a photovoltaic module installation system based on a flexible support structure, and its core feature is the use of flexible materials such as cables to replace traditional rigid brackets. This technology is particularly suitable for sites with complex terrains, undulating slopes or those that need to balance ecological protection (such as mountains, fishery-photovoltaic complementary projects, etc.). Its large-span characteristics can reduce the number of columns, reduce damage to ground vegetation, and improve the land compound utilization rate. Compared with rigid brackets, flexible photovoltaic brackets have advantages such as less material consumption, strong adaptability, and flexible installation, and have become an important development direction in the photovoltaic field in recent years.

[0003] Existing flexible photovoltaic brackets are prone to vibration under the influence of wind force in the external environment during application. When the amplitude of the photovoltaic module is too large, it will not only cause problems such as damage to the photovoltaic module and the failure of the electrical connection between the photovoltaic module and other devices, but also affect the overall stability of the flexible photovoltaic bracket. To suppress the influence of wind force on the photovoltaic module, currently, a common method is to add support columns in the middle of the cable, and the structural stiffness is improved by shortening the span. However, this solution has the following technical defects: at the fixed node of the cable and the middle support column, due to the superposition of bidirectional tensile forces, it will become a stress peak area. Under the action of long-term alternating loads, this area is likely to cause the cable to break due to fatigue, and even cause the cable to break here, threatening the safety of the overall structure. Summary of the Invention

[0004] In order to overcome the disadvantages existing in the use of the flexible photovoltaic bracket with a large-span cable structure in the prior art, the present invention provides a flexible photovoltaic bracket based on a large-span cable structure.

[0005] The technical implementation solution of the present invention is as follows: A flexible photovoltaic bracket based on a large-span cable structure, comprising: two main support members symmetrically distributed, between the two main support members, two symmetrically distributed cables are fixedly connected together, and a plurality of photovoltaic panels are jointly arranged on the two cables; a mounting seat arranged between the two main support members; fixing columns, having two symmetrically distributed, both fixedly connected to the mounting seat, a first support frame is jointly arranged on the two fixing columns, and a damper is arranged between the first support frame and the mounting seat; a second support frame, having two symmetrically distributed, respectively arranged on adjacent fixing columns, when the second support frame contacts the adjacent first support frame, it is used to limit the adjacent first support frame, and when it separates from the adjacent first support frame, it enables the adjacent first support frame to have a movable space, a chute is arranged on the second support frame, a fixing member is slidably connected in a limited manner in the chute of the second support frame, an elastic liquid sac is fixedly connected in the fixing member, a pressing ring is slidably connected in the fixing member, the cable passes through the adjacent pressing ring, and the pressing ring is attached to the adjacent elastic liquid sac; a limiting component is arranged on the two second support frames, and the limiting component is used to connect the adjacent fixing column and the adjacent second support frame, and is used to change the connection relationship between the two in strong wind weather.

[0006] As a preferred technical solution of the present invention, the pressing ring is made of an elastic deformable material, and the inner side of the cross-section of the pressing ring is arc-shaped.

[0007] As a preferred technical solution of the present invention, it further comprises: a self-locking motor, a connecting member is arranged on the first support frame, the self-locking motor is fixedly connected to the connecting member of the first support frame, and the output shaft of the self-locking motor passes through the first support frame; a first winding ring fixedly connected to the output shaft of the self-locking motor, a fastening rope is jointly wound around the two fixing members, both ends of the fastening rope are fixedly connected with a first elastic rope, and both first elastic ropes are fixedly connected to the first winding ring.

[0008] As a preferred technical solution of the present invention, a limiting pin for limiting the fixing member on it is slidably connected to the second support frame, a first spring is fixedly connected between the second support frame and the limiting pin on it, a plug pin is slidably connected to the limiting pin, and a second winding ring is fixedly connected to the output shaft of the self-locking motor, and a first connecting rope is fixedly connected between the second winding ring and both plug pins.

[0009] As a preferred technical solution of the present invention, the first support frame is provided with two limiting grooves respectively for the two fixing members to slide.

[0010] As a preferred technical solution of the present invention, the limiting assembly includes: limiting blocks, there are two symmetrically distributed, respectively penetrating and slidingly connected to the adjacent second support frames, a second spring is fixedly connected between the second support frame and the limiting block thereon, the limiting block is slidably connected to the adjacent fixed column, the second support frame is slidably connected to the adjacent fixed column, and a tension spring is fixedly connected between the second support frame and the mounting seat, the first support frame is in contact with both fixed columns; moving blocks, there are two symmetrically distributed, respectively slidably connected to the adjacent second support frames, the moving blocks are used to squeeze the adjacent limiting blocks and drive the adjacent limiting blocks to move; extrusion blocks, there are two symmetrically distributed, respectively fixedly connected to the adjacent fixing members, the extrusion blocks are used to squeeze the adjacent moving blocks.

[0011] As a preferred technical solution of the present invention, it further includes: connecting blocks, there are two symmetrically distributed, respectively slidably connected in the adjacent limiting grooves on the first support frame, a third spring is fixedly connected between the connecting block and the first support frame, and the sliding groove of the second support frame allows the adjacent connecting block to slide.

[0012] As a preferred technical solution of the present invention, the damper includes: a second connecting rope, fixedly connected to the connecting member of the first support frame; a heavy ball, fixedly connected to the second connecting rope.

[0013] As a preferred technical solution of the present invention, it further includes: a plurality of second elastic ropes evenly distributed circumferentially, all fixedly connected to the heavy ball, and the second elastic ropes are fixedly connected to the mounting seat.

[0014] As a preferred technical solution of the present invention, the lengths of the plurality of second elastic ropes evenly distributed circumferentially are equal, and the connection points of the second elastic ropes and the heavy ball are not flush with the center of gravity of the heavy ball.

[0015] Compared with the prior art, the present invention has the following advantages: Through the deformation of the extrusion ring and the deformation of the elastic liquid sac, the vibration of the steel cable is buffered, the amplitude of the alternating load is reduced, the vibration amplitude of the steel cable is reduced, so as to weaken the dynamic stress superposition of the steel cable at the adjacent extrusion rings, relieve the fatigue effect, improve the stability of the overall structure, and extend the service life of the steel cable.

[0016] Drive the middle parts of the adjacent steel cables to move through the fixing members, make the middle parts of the two steel cables approach each other, improve the local structural stiffness of the two steel cables, change the natural frequency of the two steel cables during vibration, reduce the resonance risk, and reduce the free vibration amplitude of the steel cable.

[0017] When the first support frame moves horizontally, the heavy ball provides a reverse pulling force to the first support frame, reducing the moving amplitude of the first support frame horizontally, thereby reducing the overall shaking amplitude of the first support frame to increase the stability of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the fixed column and the first support frame of the present invention;

[0020] Figure 3 It is a three-dimensional structure schematic diagram of the mounting seat and the fixed column of the present invention;

[0021] Figure 4 It is a three-dimensional structure cross-sectional view of the fixed column and the second support frame of the present invention;

[0022] Figure 5 It is a three-dimensional structure cross-sectional view of the first support frame and the second support frame of the present invention;

[0023] Figure 6 It is a three-dimensional structure schematic diagram of the limit pin and the plug pin of the present invention;

[0024] Figure 7 It is a three-dimensional structure cross-sectional view of the fixing member of the present invention;

[0025] Figure 8 It is a three-dimensional structure schematic diagram of the moving block and the connecting block of the present invention;

[0026] Figure 9 It is an exploded three-dimensional structure diagram of the first support frame and the second support frame of the present invention.

[0027] The meanings of the reference numerals in the drawings: 1: main support member, 2: steel cable, 3: mounting seat, 4: fixed column, 41: first support frame, 42: second support frame, 5: fixing member, 6: elastic liquid sac, 7: extrusion ring, 8: self-locking motor, 9: first winding ring, 10: fastening rope, 11: first elastic rope, 12: limit pin, 13: plug pin, 14: second winding ring, 141: first connecting rope, 15: limit block, 16: moving block, 17: extrusion block, 18: connecting block, 19: heavy ball, 191: second connecting rope, 20: second elastic rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Reference to embodiments in this text means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Embodiment 1: A flexible photovoltaic bracket based on a large-span cable structure, as Figures 1 - 6 and Figure 9 shown, includes: two main support members 1 symmetrically distributed, two symmetrically distributed cables 2 are fixedly connected between the two main support members 1, and a number of photovoltaic panels are jointly arranged on the two cables 2; a mounting seat 3, arranged between the two main support members 1; fixing columns 4, having two symmetrically distributed, both fixedly connected to the mounting seat 3, a first support frame 41 is jointly arranged on the two fixing columns 4, and a damper is arranged between the first support frame 41 and the mounting seat 3; second support frames 42, having two symmetrically distributed, respectively arranged on adjacent fixing columns 4, when the second support frame 42 contacts the adjacent first support frame 41, it is used to limit the adjacent first support frame 41, and when it separates from the adjacent first support frame 41, it enables the adjacent first support frame 41 to have a movable space. The second support frame 42 is provided with a chute, and a fixing member 5 is slidably connected in a limited manner in the chute of the second support frame 42. An elastic liquid sac 6 is fixedly connected in the fixing member 5, a pressing ring 7 is slidably connected in the fixing member 5, the cable 2 passes through the adjacent pressing ring 7, and the pressing ring 7 is attached to the adjacent elastic liquid sac 6; a limiting assembly, arranged on the two second support frames 42, the limiting assembly is used to connect the adjacent fixing column 4 and the adjacent second support frame 42, and in strong wind weather, it is used to change the connection relationship between the two.

[0030] In the above solution, a control terminal (an existing device not shown in the figure) is arranged on the main support member 1, and a wind detector (an existing device not shown in the figure) for detecting the external environmental wind force is arranged on the main support member 1. The wind detector is electrically connected to the control terminal; the main support member 1 is an existing device, which is jointly composed of a column, an anchor point, and a stay cable, and the specific structure will not be described in detail; the mounting seat 3 is located at the center of the connection line of the two main support members 1 and is made of cement pouring; in this embodiment, the first support frame 41 is fixedly connected to the two fixing columns 4, and the second support frame 42 is fixedly connected to the adjacent fixing column 4; the projection of the elastic liquid sac 6 on the fixing member 5 is a ring, the elastic liquid sac 6 stores hydraulic oil, and the pressing ring 7 is located inside the elastic liquid sac 6.

[0031] As Figure 7 and Figure 9As shown, the extrusion ring 7 is made of an elastic deformable material and is used to buffer the adjacent steel cables 2 when the adjacent steel cables 2 shake. The inner side of the cross-section of the extrusion ring 7 is an arc surface, which is used to reduce the frictional stress between it and the steel cable 2, thereby reducing the degree of wear of the steel cable 2.

[0032] As Figures 2 - 5 shown, it further includes: a self-locking motor 8. A connecting member is provided on the first support frame 41, and the self-locking motor 8 is fixedly connected to the connecting member of the first support frame 41. The output shaft of the self-locking motor 8 passes through the first support frame 41; a first winding ring 9 is fixedly connected to the output shaft of the self-locking motor 8. A fastening rope 10 is wound around the two fixing members 5 together. Both ends of the fastening rope 10 are fixedly connected with a first elastic rope 11, and both first elastic ropes 11 are fixedly connected to the first winding ring 9.

[0033] In the above solution, the self-locking motor 8 is electrically connected to the control terminal. There is a height difference between the connection points of the two first elastic ropes 11 and the first winding ring 9 to prevent the two ends of the fastening rope 10 from overlapping on the first winding ring 9, and the fastening rope 10 is inextensible (optionally a steel wire rope).

[0034] As Figures 3 - 6 shown, a limit pin 12 for limiting the fixing member 5 thereon is slidably connected to the second support frame 42. A first spring is fixedly connected between the second support frame 42 and the limit pin 12 thereon. The limit pin 12 is slidably connected with a latch pin 13. The output shaft of the self-locking motor 8 is fixedly connected with a second winding ring 14. A first connecting rope 141 is fixedly connected between the second winding ring 14 and the two latch pins 13.

[0035] In the above solution, initially, the first spring on the limit pin 12 is already in a compressed state, and the latch pin 13 is horizontally placed to enable the latch pin 13 to move back and forth along the limit pin 12; the second winding ring 14 is located below the first winding ring 9, and the first connecting rope 141 is inextensible (the first connecting rope 141 is optionally a steel wire rope).

[0036] As Figures 4 - 6 shown, the first support frame 41 is provided with two limit grooves for the two fixing members 5 to slide. In this embodiment, the two limit grooves on the first support frame 41 are always communicated with the sliding grooves on the adjacent second support frame 42, so that the fixing member 5 can move along the adjacent second support frame 42 to the first support frame 41, reducing the distance between the two fixing members 5.

[0037] The specific working process of the above solution is as follows:

[0038] During the normal use of the photovoltaic panel, when the wind blows in the external environment, the wind blows all the photovoltaic panels, and all the photovoltaic panels drive the two steel cables 2 to shake together. The following takes the process of the front steel cable 2 moving forward as an example for description:

[0039] During the shaking process of the cable 2, the cable 2 squeezes the extrusion ring 7, causing the extrusion ring 7 to deform under the extrusion. During the deformation process of the extrusion ring 7, shock absorption treatment is carried out on the cable 2 to reduce the vibration amplitude of the cable 2. At the same time, during the movement of the cable 2, the cable 2 drives the extrusion ring 7 to move forward synchronously. The extrusion ring 7 squeezes the elastic liquid sac 6, and the compressed part of the elastic liquid sac 6 deforms. At the same time, the hydraulic oil in the compressed part of the elastic liquid sac 6 moves to other parts of the elastic liquid sac 6, causing other parts of the elastic liquid sac 6 to expand. The deformation of the extrusion ring 7 and the elastic liquid sac 6 buffers the vibration of the cable, reduces the amplitude of the alternating load, and further reduces the vibration amplitude of the cable 2, so as to weaken the dynamic stress superposition of the cable 2 at the adjacent extrusion rings 7, thereby alleviating the fatigue effect, improving the stability of the overall structure, and prolonging the service life of the cable 2.

[0040] During the shaking process of the two cables 2, when the wind detector detects that the wind force in the external environment increases to the specified intensity (the index of the specified intensity can be specifically set by the staff according to the usage scenario), the control terminal starts the self-locking motor 8. The output shaft of the self-locking motor 8 drives the first winding ring 9 and the second winding ring 14 to rotate synchronously. During the rotation of the first winding ring 9, the first winding ring 9 should drive the two ends of the fastening rope 10 to move through the two first elastic ropes 11. However, at this time, the two fixing parts 5 are respectively limited by the adjacent limit pins 12 and cannot move, which in turn causes the two ends of the fastening rope 10 to be unable to move. Therefore, during the rotation of the first winding ring 9, the first winding ring 9 stretches the two first elastic ropes 11 and winds the two first elastic ropes 11 around the first winding ring 9 during the stretching process. At the same time, the second winding ring 14 winds the two first connecting ropes 141 around it, and the two first connecting ropes 141 respectively drive the adjacent pins 13 to move, making the two pins 13 approach each other.

[0041] During the movement of the two pins 13, the pins 13 move along the adjacent limit pins 12. When the pins 13 lose contact with the adjacent limit pins 12, the pins 13 no longer limit the adjacent limit pins 12, and the limit pins 12 move to the right under the action of the first spring on them. The limit pins 12 gradually move out of the adjacent first support frame 41. During this process, the limit pins 12 gradually lose contact with the adjacent fixing parts 5. After the limit pins 12 completely lose contact with the adjacent fixing parts 5, the limit pins 12 no longer limit the adjacent fixing parts 5, and at this time, the fixing parts 5 can move along the chute of the second support frame 42.

[0042] After the limit pin 12 loses its limit on the adjacent fixing member 5, the first winding ring 9 winds the fastening rope 10 thereon. During the winding process of the fastening rope 10, the two fixing members 5 are driven to move synchronously, reducing the distance between the two fixing members 5. The two fixing members 5 respectively drive the adjacent steel cables 2 to move, bringing the two steel cables 2 closer to each other, restricting the relative movement between the two steel cables 2, reducing the energy transfer between the two steel cables 2 during vibration, increasing the local structural stiffness of the two steel cables 2, changing the natural frequency of the two steel cables 2 during vibration, reducing the resonance risk, and reducing the free vibration amplitude of the steel cables 2.

[0043] After both fixing members 5 move onto the first support frame 41 and both fixing members 5 move along the first support frame 41 to the extreme positions (at this time, the distance between the two fixing members 5 is reduced to the minimum), the control terminal shuts down the self-locking motor 8, fixes the two fixing members 5 at the moved positions. After the wind force in the external environment weakens, the staff repairs the overall photovoltaic support, reversely starts the self-locking motor 8, releases the fastening rope 10 wound around the first winding ring 9 and the two first elastic ropes 11, and at the same time releases the two first connecting ropes 141 wound around the second winding ring 14. After manually resetting the two fixing members 5 to the initial positions, the self-locking motor 8 is shut down, and the two limit pins 12 are reset to the initial positions, enabling the two limit pins 12 to re-limit the adjacent fixing members 5, and the two pins 13 are re-inserted into the adjacent limit pins 12 for subsequent use.

[0044] Embodiment 2: On the basis of Embodiment 1, as Figures 2 - 5 、 Figure 8 and Figure 9 shown, the limiting assembly includes: limiting blocks 15, two of which are symmetrically distributed and are respectively slidably connected to the adjacent second support frame 42 in a penetrating manner. A second spring is fixedly connected between the second support frame 42 and the limiting block 15 thereon. The limiting block 15 is slidably connected to the adjacent fixed column 4, the second support frame 42 is slidably connected to the adjacent fixed column 4, and a tension spring is fixedly connected between the second support frame 42 and the mounting seat 3. The first support frame 41 is in contact with both fixed columns 4; moving blocks 16, two of which are symmetrically distributed and are respectively slidably connected to the adjacent second support frame 42. The moving blocks 16 are used to squeeze the adjacent limiting blocks 15 and drive the adjacent limiting blocks 15 to move; extrusion blocks 17, two of which are symmetrically distributed and are respectively fixedly connected to the adjacent fixing members 5. The extrusion blocks 17 are used to squeeze the adjacent moving blocks 16; it further includes: connecting blocks 18, two of which are symmetrically distributed and are respectively slidably connected to the adjacent limiting grooves on the first support frame 41. A third spring is fixedly connected between the connecting block 18 and the first support frame 41. The sliding grooves of the second support frame 42 allow the adjacent connecting blocks 18 to slide; the damper includes: a second connecting rope 191 fixedly connected to the connecting member of the first support frame 41; a heavy ball 19 fixedly connected to the second connecting rope 191.

[0045] In the above solution, initially, the limiting block 15 cooperates with the adjacent fixed column 4 to limit the adjacent second support frame 42 and maintain the second support frame 42 at the initial position; the two fixed columns 4 jointly support the first support frame 41 and provide limitation to the first support frame 41 to prevent the first support frame 41 from moving downward; initially, the tension spring between the second support frame 42 and the mounting seat 3 is in a stretched state; the connecting block 18 is L-shaped. When the front side of the fixing member 5 contacts the front side of the adjacent connecting block 18, the rear side of the fixing member 5 has entered the limiting groove adjacent to the first support frame 41 (refer to Figure 6 ); initially, the two second support frames 42 are connected to the first support frame 41 through the adjacent connecting blocks 18 to maintain the stability between the two second support frames 42 and the first support frame 41; the central axis of the second connecting rope 191 coincides with the central axis of the first support frame 41. The moving block 16 and the extrusion block 17 are both provided with inclined surfaces, and the inclination angles of the inclined surfaces on both of them are 45°, which is used to reduce the resistance during the movement of the extrusion block 17, so that the extrusion block 17 can smoothly extrude the moving block 16 downward. The limiting block 15 is provided with a V-shaped groove, and the moving block 16 fits with one side of the V-shaped groove of the adjacent limiting block 15. The moving block 16 squeezes the adjacent limiting block 15 during the downward movement, so that the limiting block 15 moves away from the adjacent fixed column 4.

[0046] As Figures 2 - 4 shown, it further includes: a second elastic rope 20, which has a plurality of circumferentially evenly distributed ones, and is fixedly connected to the heavy ball 19. The second elastic rope 20 is fixedly connected to the mounting seat 3. The specific number of the second elastic ropes 20 is specifically selected by the staff according to actual use needs, but a plurality of second elastic ropes 20 need to be circumferentially evenly distributed on the heavy ball 19; the lengths of the plurality of circumferentially evenly distributed second elastic ropes 20 are equal, and the connection points of the second elastic ropes 20 with the heavy ball 19 are not flush with the center of gravity of the heavy ball 19, which is used to increase the resistance during the movement of the heavy ball 19 and limit the movement range of the heavy ball 19.

[0047] The specific working process of the above solution is as follows:

[0048] The present invention takes into account that the two steel cables 2 originally mainly bear axial tension, but after being fixed to the first support frame 41, local bending stress is introduced under wind load, forming a tension-bending combined stress state. Especially in strong wind weather, it will more easily cause the vibration of the two steel cables 2, resulting in the connection between the two steel cables 2 and the first support frame 41 bearing periodic alternating stress, accelerating the fatigue damage of the two steel cables 2, and causing "local hard points" at the connection between the two steel cables 2 and the first support frame 41 (referring to the connection area between the two steel cables 2 and the first support frame 41, and the stiffness of the connection area is significantly higher than the adjacent free section), intensifying stress concentration. To solve the above problems, the present invention takes the following measures:

[0049] During the process of the two fixing members 5 approaching each other, the fixing member 5 drives the extrusion block 17 thereon to move synchronously. When the two fixing members 5 respectively move to contact the adjacent connecting block 18, during the subsequent movement of the fixing member 5, the fixing member 5 drives the adjacent connecting block 18 to move synchronously, thereby reducing the contact area between the connecting block 18 and the adjacent second support frame 42, and the connecting block 18 squeezes the third spring thereon, causing the third spring to be compressed and store energy.

[0050] When the fixing member 5 contacts the connecting block 18 (at this time, the extrusion block 17 does not contact the adjacent moving block 16), a part of the fixing member 5 moves into the adjacent limiting groove on the first support frame 41 (the other part of the fixing member 5 is located in the sliding groove of the adjacent second support frame 42), so that during the subsequent movement of the fixing member 5, it moves along the adjacent limiting groove on the first support frame 41. After the connecting block 18 completely loses contact with the adjacent second support frame 42, the fixing member 5 supports the first support frame 41 and the adjacent second support frame 42 to ensure the stability of their relative positions.

[0051] When the extrusion block 17 moves to contact the adjacent moving block 16 (part of the two fixing members 5 is still located in the sliding groove of the adjacent second support frame 42), during the subsequent movement of the two extrusion blocks 17, the inclined surface of the extrusion block 17 squeezes the inclined surface of the adjacent moving block 16, causing the moving block 16 to move downward under the extrusion force, and the moving block 16 squeezes the adjacent limiting block 15 during the downward movement, causing the two limiting blocks 15 to move away from each other. At the same time, during the movement of the limiting block 15, the limiting block 15 squeezes the second spring thereon, causing the second spring on the limiting block 15 to be compressed and store energy. At the same time, during the movement of the limiting block 15, the contact area between the limiting block 15 and the adjacent fixed column 4 gradually decreases.

[0052] When the two moving blocks 16 both move downward to the limit position, the distance between the two limiting blocks 15 increases to the maximum, and at the same time, the limiting block 15 completely loses contact with the adjacent fixed column 4 (and there is a gap between the projection of the limiting block 15 on the horizontal plane and the projection of the adjacent fixed column 4 on the horizontal plane). At this time, part of the two fixing members 5 is still located in the sliding groove of the adjacent second support frame 42, so that the second support frame 42 is limited by the adjacent fixing member 5 and cannot move downward under the action of the pulling spring thereon. When the fixing member 5 completely loses contact with the adjacent second support frame 42 (that is, when the fixing member 5 completely moves into the limiting groove of the first support frame 41), the extrusion block 17 simultaneously loses contact with the adjacent moving block 16, and the second support frame 42 moves downward under the action of the pulling spring thereon, so that the two second support frames 42 lose contact with the first support frame 41.

[0053] After both of the second support frames 42 lose contact with the first support frame 41, the first support frame 41 is restricted by the two fixing columns 4 and cannot move downward. When the steel cable 2 sways under the influence of wind force in the external environment (taking the upward movement of the steel cable 2 as an example for description), as the swaying steel cable 2 drives the first support frame 41 and other parts connected thereto to move upward synchronously through the adjacent fixing member 5, the first support frame 41 drives the second connecting rope 191 to move through the connecting frame thereon. The second connecting rope 191 drives the heavy ball 19 to move synchronously, and the four second elastic ropes 20 under the heavy ball 19 are stretched synchronously during the movement of the heavy ball 19. The four second elastic ropes 20 buffer the pulling force on the heavy ball 19, reducing the upward movement amplitude of the heavy ball 19, thereby increasing the stability of the two steel cables 2 and the photovoltaic panels thereon as a whole.

[0054] When the first support frame 41 moves horizontally, taking the forward movement as an example for description:

[0055] During the forward movement of the first support frame 41, the heavy ball 19 moves backward relative to the first support frame 41, and the heavy ball 19 provides a backward pulling force on the first support frame 41, thereby offsetting the forward movement force of the first support frame 41, further reducing the forward movement amplitude of the first support frame 41, thereby reducing the overall swaying amplitude of the first support frame 41, to increase the stability of the two steel cables 2 and the photovoltaic panels thereon as a whole. At the same time, during the movement of the first support frame 41, the tension distribution of the two steel cables 2 can be dynamically adjusted, reducing the stress on the middle positions of the two steel cables 2, avoiding the occurrence of stress concentration at the connection points between the two steel cables 2 and the first support frame 41, and extending the service life of the two steel cables 2.

[0056] After the wind force in the external environment decreases, the staff pulls up the two second support frames 42, so that the two second support frames 42 gradually move upward to the initial position. At the same time, after the two second support frames 42 move upward to the initial position, the two limit blocks 15 approach each other under the action of the second springs thereon, so that the two limit blocks 15 move into the adjacent fixing columns 4. The fixing columns 4 cooperate with the adjacent limit blocks 15 to limit the adjacent second support frames 42, fixing the two second support frames 42 at the initial position. Subsequently, the control terminal reversely starts the self-locking motor 8 according to the above operation, and resets the two fixing members 5 to the initial position.

[0057] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its improvement concept of the present application, makes equivalent substitutions or changes, and should be covered by the protection scope of the present application.

Claims

1. A flexible photovoltaic support based on a large-span cable structure, characterized in that, It includes: Two main support members (1) symmetrically distributed. Two steel cables (2) symmetrically distributed are fixedly connected together between the two main support members (1). A number of photovoltaic panels are jointly arranged on the two steel cables (2); A mounting seat (3) is arranged between the two main support members (1); There are two fixing columns (4) symmetrically distributed, both of which are fixedly connected to the mounting seat (3). A first support frame (41) is jointly arranged on the two fixing columns (4); There are two second support frames (42) symmetrically distributed, which are respectively arranged on adjacent fixing columns (4). When the second support frame (42) contacts the adjacent first support frame (41), it is used to limit the adjacent first support frame (41). When it is separated from the adjacent first support frame (41), it allows the adjacent first support frame (41) to have a movable space. The second support frame (42) is provided with a chute. A fixing member (5) is slidably connected in a limited manner in the chute of the second support frame (42). The first support frame (41) is provided with two limit grooves respectively for the two fixing members (5) to slide. An elastic liquid sac (6) is fixedly connected in the fixing member (5). An extrusion ring (7) is slidably connected in the fixing member (5). The steel cable (2) passes through the adjacent extrusion ring (7), and the extrusion ring (7) is attached to the adjacent elastic liquid sac (6); A limit assembly is arranged on the two second support frames (42). The limit assembly is used to connect the adjacent fixing column (4) and the adjacent second support frame (42), and in strong wind weather, it is used to change the connection relationship between them. At this time, the fixing member (5) is located on the first support frame (41); The limit assembly includes: There are two limit blocks (15) symmetrically distributed, which are respectively slidably connected through the adjacent second support frame (42). A second spring is fixedly connected between the second support frame (42) and the limit block (15) thereon. The limit block (15) is slidably connected to the adjacent fixing column (4). The second support frame (42) is slidably connected to the adjacent fixing column (4), and a tension spring is fixedly connected between the second support frame (42) and the mounting seat (3). The first support frame (41) is in contact with both fixing columns (4); There are two moving blocks (16) symmetrically distributed, which are respectively slidably connected to the adjacent second support frame (42). The moving block (16) is used to squeeze the adjacent limit block (15) and drive the adjacent limit block (15) to move; There are two extrusion blocks (17) symmetrically distributed, which are respectively fixedly connected to the adjacent fixing member (5). The extrusion block (17) is used to squeeze the adjacent moving block (16).

2. The flexible photovoltaic bracket based on a large-span cable structure according to claim 1, characterized in that, A damper is arranged between the first support frame (41) and the mounting seat (3).

3. A flexible photovoltaic support based on a large-span cable structure according to claim 1, characterized in that, The extrusion ring (7) is made of an elastic deformable material, and the inner side of the cross-section of the extrusion ring (7) is arc-shaped.

4. A flexible photovoltaic support based on a large-span cable structure according to claim 1, characterized in that, It also includes: Self-locking motor (8), a connecting member is provided on the first support frame (41), the self-locking motor (8) is fixedly connected to the connecting member of the first support frame (41), and the output shaft of the self-locking motor (8) passes through the first support frame (41); First winding ring (9), fixedly connected to the output shaft of the self-locking motor (8), a fastening rope (10) is wound around the two fixing members (5) together, both ends of the fastening rope (10) are fixedly connected with a first elastic rope (11), and both of the first elastic ropes (11) are fixedly connected to the first winding ring (9).

5. A flexible photovoltaic support based on a long-span cable structure according to claim 4, characterized in that, A limiting pin (12) for limiting the fixing member (5) thereon is slidably connected to the second support frame (42), a first spring is fixedly connected between the second support frame (42) and the limiting pin (12) thereon, a plug pin (13) is slidably connected to the limiting pin (12), and a second winding ring (14) is fixedly connected to the output shaft of the self-locking motor (8), and a first connecting rope (141) is fixedly connected between the second winding ring (14) and each of the two plug pins (13).

6. A flexible photovoltaic support based on a long-span cable structure according to claim 1, characterized in that, It further includes: Connecting blocks (18), there are two symmetrically distributed, respectively slidably connected in adjacent limiting grooves on the first support frame (41), a third spring is fixedly connected between the connecting block (18) and the first support frame (41), and the sliding groove of the second support frame (42) allows the adjacent connecting block (18) to slide.

7. A flexible photovoltaic support based on a large-span cable structure according to claim 2, characterized in that, The damper includes: Second connecting rope (191), fixedly connected to the connecting member of the first support frame (41); Heavy ball (19), fixedly connected to the second connecting rope (191).

8. A flexible photovoltaic bracket based on a long-span cable structure according to claim 7, characterized in that, It further includes: Second elastic ropes (20), there are several circumferentially and evenly distributed, all fixedly connected to the heavy ball (19), and the second elastic ropes (20) are fixedly connected to the mounting seat (3).

9. A flexible photovoltaic support based on a large-span cable structure according to claim 8, characterized in that, The lengths of several circumferentially and evenly distributed second elastic ropes (20) are equal, and the connection points of the second elastic ropes (20) and the heavy ball (19) are not flush with the center of gravity of the heavy ball (19).

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