Linkage type flexible tracking truss photovoltaic support system and installation method

Abstract

The invention relates to a linkage type flexible tracking truss photovoltaic support system and an installation method, and the photovoltaic support system comprises end support rotation systems disposed at two ends, and a middle support rotation system disposed between the end support rotation systems. Each end support rotating system comprises a four-foot steel vertical frame and an end truss beam, each middle support rotating system comprises a steel stand column and a middle steel beam, and a load-bearing upper cable and a load-bearing lower cable are arranged between each row of end support rotating system and the corresponding middle support rotating system; the driving device drives the end truss girders and the middle steel girders to rotate synchronously to adjust the inclination angle. The bearing capacity of the end steel beams is improved through the end truss beams, the stability of the end supports is enhanced through the four-foot steel vertical frames, and the front row and the rear row are rigidly connected through the rotating connecting rods. The whole flexible tracking support structure system end support is reasonable in stress, good in integrity and stability and large in span, rigid connection of the photovoltaic flexible support cable bodies in the front row and the rear row can be kept while rotation is conducted, and the wind resistance is high.

Description

Technical Field

[0001] The present invention relates to the field of solar energy application technology, and in particular to a linked flexible tracking truss photovoltaic support system and an installation method. Background Art

[0002] The scale of photovoltaic installed capacity in my country has grown rapidly. With the tightening of the current photovoltaic land use policy, the shortage of photovoltaic land has become more prominent. Only Gobi, desert, orchards and tea gardens are in line with the national land use policy. The current common solution is to adopt the photovoltaic composite utilization method, combining photovoltaic power generation with land in orchards and tea gardens that meet the national land use policy. However, in the actual agricultural-photovoltaic complementary model in the central and eastern parts of China, photovoltaic power generation often "steals light" with crops, and has not achieved true agricultural-photovoltaic complementary, which has become an obstacle to the current development of photovoltaic power generation. The flexible tracking bracket system retains the advantages of traditional flexible photovoltaic brackets and has the function of tracking photovoltaic brackets. It can meet the crop's demand for sunlight by adjusting the inclination of photovoltaic modules.

[0003] At present, there are many technologies and concepts of flexible tracking photovoltaic brackets, but the existing flexible tracking brackets have not been able to solve the problem that the end steel beams are subjected to large forces and need to improve their bearing capacity and stability. In addition, the rows are relatively independent and the front and rear rows lack a stable rigid connection, which leads to weak wind resistance and the photovoltaic modules are easily damaged by wind vibration, such as patents "CN211377955U" and "CN116722809A". Patent "CN118157568A" uses a rotatable thrust bearing between the inclined anchor cable and the end beam to achieve the rotation adjustment of the end beam while keeping the inclined anchor cable unit of the flexible tracking photovoltaic bracket fixed, and balances the horizontal force on the end bracket. However, this structural system does not achieve a stable rigid connection between the front and rear rows, and its wind resistance is relatively weak, which to a certain extent restricts its promotion and application in engineering. Therefore, how to further improve the wind resistance stability of the current flexible tracking bracket system and build a stable and reliable flexible tracking photovoltaic bracket system is a key engineering and technical problem that needs to be solved urgently. Summary of the invention

[0004] To solve the above problems, the present invention provides a linked flexible tracking truss photovoltaic support system and installation method, which has good structural integrity and stability, a large span, can maintain the rigid connection between the front and rear rows of photovoltaic flexible support cables while rotating, and has strong wind resistance.

[0005] The technical solution adopted by the present invention is: a linked flexible tracking truss photovoltaic support system, characterized in that it includes an end support rotation system arranged at both ends, and a middle support rotation system arranged between the end support rotation systems;

[0006] The end support rotation system includes a four-leg steel upright and an end truss beam, and the end truss beam is rotatably arranged on the four-leg steel upright; the middle support rotation system includes a steel column and a middle steel beam, and the middle steel beam is rotatably arranged on the steel column, and adjacent rows of the steel columns are fixedly connected by a rigid connecting rod;

[0007] A load-bearing upper cable and a load-bearing lower cable are provided between each row of the end support rotation system and the corresponding middle support rotation system. The load-bearing upper cable and the load-bearing lower cable are connected to the corresponding end truss beam through cable anchors and are connected to the corresponding middle steel beam through limit connectors; a wind-resistant strut is provided between each row of the load-bearing upper cable and the load-bearing lower cable, and adjacent rows of the wind-resistant struts are connected by a rotating connecting rod;

[0008] The driving device drives the end truss beam and the middle steel beam to rotate synchronously to adjust the inclination angle.

[0009] Preferably, one end of the rotating connecting rod is provided with a small rotating connecting rod capable of adjusting the rotation installation error, and the small rotating connecting rod is connected to the wind-resistant strut through a connecting piece, and the other end of the rotating connecting rod is connected to another wind-resistant strut.

[0010] Preferably, the driving device for driving the rotation of the end truss beam includes a driving mechanism, a telescopic strut and a control mechanism. One end of the telescopic strut is arranged on the four-leg steel upright, and the other end is arranged on the corresponding end truss beam; the driving mechanism drives the telescopic strut to move, thereby driving the end truss beam to rotate and adjust the inclination angle; the control mechanism controls the action of the driving mechanism by determining the sun position through a sensor.

[0011] Preferably, the driving device for driving the rotation of the middle steel beam includes a driving mechanism, a telescopic strut and a control mechanism. One end of the telescopic strut is arranged on the steel column, and the other end is arranged on the middle steel beam; the driving mechanism drives the telescopic strut to move, thereby driving the middle steel beam to rotate and adjust the inclination angle; the control mechanism controls the action of the driving mechanism by determining the sun position through a sensor.

[0012] Preferably, the end truss beam can be formed by welding or bolt connection of round steel pipes, angle steels, etc., and a reinforcing plate is required for reinforcement at the connection with the cable anchor.

[0013] Preferably, the four-leg steel upright is prefabricated and welded from I-beams or square steels and is integrally installed at the construction site.

[0014] Preferably, the rigid connecting rod is made of I-beam or square steel.

[0015] Preferably, the wind-resistant strut is made of round steel pipe, C-shaped steel or square steel.

[0016] Preferably, the process of inclination angle adjustment is as follows:

[0017] When the control mechanism obtains the instruction for tilt angle adjustment through sensor analysis, the driving mechanism acts to drive all telescopic struts in the system to expand and contract synchronously, thereby driving the end truss beam and the middle steel beam to rotate synchronously. The load-bearing upper cable and the load-bearing lower cable installed on the end truss beam and the middle steel beam will rotate synchronously, thus driving the rotation of the photovoltaic modules installed on the load-bearing upper cable to adjust their tilt angles; the wind-resistant struts rotate synchronously with the load-bearing upper cable and the load-bearing lower cable, and the front and rear rows of wind-resistant struts maintain linkage through the rotating connecting rod during the rotation process.

[0018] An installation method for the above-mentioned interlocking flexible tracking truss photovoltaic support system includes the following steps:

[0019] S1. Mark the basic points according to GPS positioning, construct the foundation of the flexible tracking photovoltaic support system, and ensure that the foundation position and elevation deviation are within the allowable range of the design.

[0020] S2. Pre-assemble the four-legged steel upright of the end support and the end truss beam for integral hoisting.

[0021] S3. Install the four-corner steel upright and the middle steel column, and install rigid connecting rods for the front and rear rows of steel columns.

[0022] S4. Hoist and install the prefabricated end truss beam on the four-legged steel upright of the end support, and install the middle steel beam on the middle column.

[0023] S5. Install the driving devices on each support.

[0024] S6. Tension the load-bearing upper cable to its designed pre-tension, then install the wind-resistant struts and the load-bearing lower cable. After the installation of the wind-resistant struts is completed, tension the load-bearing lower cable to its designed pre-tension.

[0025] S7. Install the front and rear rows of small rotating connecting rods and the rotating connecting rod to connect the wind-resistant struts, and debug whether the entire structural system has the functions of tilt angle adjustment and control.

[0026] S8. Install the photovoltaic modules on the load-bearing upper cable according to the designed spacing, and then complete the construction and installation of the entire flexible tracking photovoltaic support system.

[0027] The beneficial effects obtained by the present invention are as follows: The present invention uses the end truss beam to improve the bearing capacity of the end steel beam, uses the four-legged steel upright to enhance the stability of the end support, and realizes rigid connection through the rotating connecting rod for the front and rear rows. The end support of the entire flexible tracking support structure system is reasonably stressed, has good integrity and stability, a large span, can maintain the rigid connection of the cable bodies of the front and rear row photovoltaic flexible supports during rotation, has strong wind resistance, and has good engineering application prospects. Description of the Drawings

[0028] Figure 1It is a three-dimensional schematic diagram of an array of a linkage flexible tracking truss photovoltaic support system;

[0029] Figure 2 It is a schematic diagram of the support structure of a linkage flexible tracking truss photovoltaic support system;

[0030] Figure 3 It is a schematic diagram of the end support of a linkage flexible tracking truss photovoltaic support system;

[0031] Figure 4 It is a schematic diagram of a wind-resistant truss system;

[0032] Figure 5 It is a schematic diagram of a rotating connecting rod system;

[0033] Figure 6 It is a schematic diagram of the middle support of a linkage flexible tracking truss photovoltaic support system;

[0034] Figure 7 It is a schematic diagram after the rotation of the support structure of a linkage flexible tracking truss photovoltaic support system;

[0035] In the figure: 1. Photovoltaic module; 2. End truss beam; 3. Load-bearing upper cable; 4. Load-bearing lower cable; 5. Driving device; 6. Four-legged steel stand; 7. Middle steel beam; 8. Rotating connecting rod; 9. Wind-resistant brace; 10. Rigid connecting rod; 11. Steel column; 12. Small rotating connecting rod; 13. Special connecting piece; 14. Reinforcing plate; 15. Cable body anchor; 16. Rotating pin; 17. End rotating support; 18. Middle rotating support; 19. Limit connecting piece. Specific implementation manners

[0036] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] As Figure 1-7As shown in the figure, a linkage flexible tracking truss photovoltaic support system of the present invention includes end support rotating systems provided at both ends and a middle support rotating system provided between the end support rotating systems; the end support rotating system includes a four-leg steel upright 6 and an end truss beam 2, and the end truss beam 2 is rotatably provided on the four-leg steel upright 6; the middle support rotating system includes a steel column 11 and a middle steel beam 7, and the middle steel beam 7 is rotatably provided on the steel column 11, and adjacent rows of steel columns 11 are fixedly connected by a rigid connecting rod 10; a load-bearing upper cable 3 and a load-bearing lower cable 4 are provided between each row of end support rotating systems and the corresponding middle support rotating system, and the load-bearing upper cable 3 and the load-bearing lower cable 4 are connected to the corresponding end truss beam 2 through a cable anchor 15 and connected to the corresponding middle steel beam 7 through a limit connecting member 19; a wind-resistant strut 9 is provided between each row of load-bearing upper cables 3 and load-bearing lower cables 4, and adjacent rows of wind-resistant struts 9 are connected by a rotating connecting rod 8; the driving device drives the end truss beam 2 and the middle steel beam 7 to rotate synchronously to adjust the inclination angle.

[0038] In the linkage flexible tracking truss photovoltaic support system of the present invention, at the end, the end truss beam 2 and the four-leg steel upright 6 form an end support rotating system, and the middle steel beam 7 and the steel column 11 form a middle support rotating system. The middle steel columns 11 in the front and rear rows are connected by a rigid connecting rod 10, and the rigid connecting rod 10 can be made of I-beam or square steel. The end truss beam 2 is formed by welding or bolt connection of round steel pipe, angle steel, etc., and is strengthened by a reinforcing plate 14 at the connection with the cable anchor 15. The four-leg steel upright 6 is prefabricated and welded with I-beam or square steel, etc., and is integrally installed at the construction site. The load-bearing upper cable 3 and the load-bearing lower cable 4 are arranged horizontally in one-to-one correspondence, and are connected by a wind-resistant strut 9. After applying pre-tension, both ends are connected to the end truss beam 2 by an anchor 15 and connected to the corresponding middle steel beam 7 through a limit connecting member 19 to form a cable truss structure. The wind-resistant strut 9 can be made of round steel pipe, C-shaped steel or square steel. The wind-resistant struts 9 in the front and rear rows are connected by a rotating connecting rod 8. One end of the rotating connecting rod 8 is provided with a small rotating connecting rod 12 for adjusting the rotation installation error, and is connected to the wind-resistant strut 9 through a special connecting member 13 to enhance the integrity of the entire flexible tracking support system. The linkage flexible tracking truss photovoltaic support system drives the end truss beam 2 and the middle steel beam 7 to rotate through the driving device 5, so as to realize the rotation of the inclined photovoltaic module 1 around the rotation pins 16 on the respective end rotation supports 17 or the middle rotation supports 18. The driving device 5 includes a driving mechanism, a telescopic strut and a control mechanism. One end of the telescopic strut is arranged on the four-leg steel upright 6 and the middle steel column 11, and the other end is arranged at one end of the end truss beam 2 or the middle steel beam 7. The driving mechanism is used to drive the telescopic strut to expand and contract, and the control mechanism determines the position of the sun through a sensor to control the action of the driving mechanism.

[0039] In this embodiment, a small rotating connecting rod 12 capable of adjusting the rotational mounting error is provided at one end of the rotating connecting rod 8. The small rotating connecting rod 12 is connected to the wind-resistant support rod 9 through a connecting member 13, and the other end of the rotating connecting rod 8 is connected to another wind-resistant support rod 9.

[0040] In this embodiment, the driving device 5 for driving the rotation of the driving-end truss beam 2 includes a driving mechanism, a telescopic support rod, and a control mechanism. One end of the telescopic support rod is provided on the four-legged steel stand 6, and the other end is provided on the corresponding end truss beam 2; the driving mechanism drives the telescopic support rod to move, thereby driving the rotation of the end truss beam 2 and adjusting the inclination angle; the control mechanism determines the position of the sun through a sensor to control the action of the driving mechanism.

[0041] In this embodiment, the driving device 5 for driving the rotation of the middle steel beam 7 includes a driving mechanism, a telescopic support rod, and a control mechanism. One end of the telescopic support rod is provided on the steel column 11, and the other end is provided on the middle steel beam 7; the driving mechanism drives the telescopic support rod to move, thereby driving the rotation of the middle steel beam 7 and adjusting the inclination angle; the control mechanism determines the position of the sun through a sensor to control the action of the driving mechanism.

[0042] The inclination angle of the photovoltaic module 1 of the linked flexible tracking truss photovoltaic support system is adjusted in the following manner: when the control mechanism analyzes and obtains an inclination angle adjustment instruction through a sensor, the driving mechanism acts to drive all the telescopic support rods in the system to synchronously extend and retract, thereby driving the synchronous rotation of the end truss beam 2 and the middle steel beam 7. The load-bearing upper cable 3 and the load-bearing lower cable 4 installed on the end truss beam 2 and the middle steel beam 7 will rotate synchronously, thereby driving the rotation of the photovoltaic module 1 installed on the load-bearing upper cable 3 and adjusting its inclination angle. The wind-resistant support rods 9 rotate synchronously with the load-bearing upper cable 3 and the load-bearing lower cable 4, and the front and rear rows of wind-resistant support rods 9 maintain connection through the rotating connecting rod 8 during the rotation process.

[0043] To realize the smooth implementation of the above-mentioned linked flexible tracking truss photovoltaic support system, the present invention provides an installation method for the linked flexible tracking truss photovoltaic support system, and the specific steps are as follows:

[0044] S1. Mark the basic points according to the GPS positioning, carry out the construction of the foundation of the flexible tracking photovoltaic support system, and ensure that the foundation position and elevation deviation are within the allowable range of the design.

[0045] S2. Pre-assemble the four-legged steel stand 6 of the end support and the end truss beam 2 (including the reinforcement plate 14) for integral hoisting.

[0046] S3. Install the four-corner steel stand 6 and the middle steel column 11, and install the rigid connecting rod 10 for the front and rear rows of steel columns.

[0047] S4. Hoist and install the prefabricated end truss beam 2 on the four-legged steel stand 6 of the end support, and install the middle steel beam 7 on the middle column 11.

[0048] S5. Install the driving devices 5 (including driving mechanisms, telescopic struts, and control mechanisms) on each support.

[0049] S6. Tension the load-bearing upper cable 3 to its designed pre-tension, then install the wind-resistant struts 9 and the load-bearing lower cable 4. After the installation of the wind-resistant struts 9 is completed, tension the load-bearing lower cable 4 to its designed pre-tension.

[0050] S7. Install the front and rear row small rotating connecting rods 12 and the rotating connecting rod 8 to connect the wind-resistant struts 9, and debug whether the entire structural system has the function of adjustable inclination and control.

[0051] S8. Install the photovoltaic modules 1 on the load-bearing upper cable 3 according to the designed spacing, and thus complete the construction and installation of the entire flexible tracking photovoltaic support system.

[0052] Here, it should be noted that the description of the above technical solutions is exemplary. This specification can be embodied in different forms and should not be construed as limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are only defined by the scope of the claims.

[0053] Finally, it should be pointed out that the above embodiments are only relatively representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and there can be many variations. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. A linked flexible tracking truss photovoltaic support system, characterized in that: It includes end support rotation systems arranged at both ends and a middle support rotation system arranged between the end support rotation systems; The end support rotation system includes a four-leg steel upright frame (6) and an end truss beam (2), and the end truss beam (2) is rotatably arranged on the four-leg steel upright frame (6); the middle support rotation system includes a steel column (11) and a middle steel beam (7), and the middle steel beam (7) is rotatably arranged on the steel column (11), and adjacent rows of the steel columns (11) are fixedly connected by a rigid connecting rod (10); A load-bearing upper cable (3) and a load-bearing lower cable (4) are arranged between each row of the end support rotation system and the corresponding middle support rotation system. The load-bearing upper cable (3) and the load-bearing lower cable (4) are connected to the corresponding end truss beam (2) through cable anchors (15) and are connected to the corresponding middle steel beam (7) through limit connecting pieces (19); a wind-resistant bracing rod (9) is arranged between each row of the load-bearing upper cable (3) and the load-bearing lower cable (4), and adjacent rows of the wind-resistant bracing rods (9) are connected by a rotating connecting rod (8); The driving device (5) drives the end truss beam (2) and the middle steel beam (7) to rotate synchronously to adjust the inclination angle.

2. The linkage type flexible tracking truss photovoltaic support system according to claim 1, characterized in that: One end of the rotating connecting rod (8) is provided with a small rotating connecting rod (12) capable of adjusting the rotation installation error. The small rotating connecting rod (12) is connected to the wind-resistant bracing rod (9) through a connecting piece (13), and the other end of the rotating connecting rod (8) is connected to another wind-resistant bracing rod (9).

3. The linked flexible tracking truss photovoltaic support system according to claim 1, wherein: The driving device (5) for driving the rotation of the end truss beam (2) includes a driving mechanism, a telescopic bracing rod and a control mechanism. One end of the telescopic bracing rod is arranged on the four-leg steel upright frame (6), and the other end is arranged on the corresponding end truss beam (2); the driving mechanism drives the telescopic bracing rod to move, thereby driving the end truss beam (2) to rotate and adjust the inclination angle; the control mechanism controls the action of the driving mechanism by determining the position of the sun through a sensor.

4. The linked flexible tracking truss photovoltaic support system according to claim 1, characterized in that: The driving device (5) for driving the rotation of the middle steel beam (7) includes a driving mechanism, a telescopic bracing rod and a control mechanism. One end of the telescopic bracing rod is arranged on the steel column (11), and the other end is arranged on the middle steel beam (7); the driving mechanism drives the telescopic bracing rod to move, thereby driving the middle steel beam (7) to rotate and adjust the inclination angle; the control mechanism controls the action of the driving mechanism by determining the position of the sun through a sensor.

5. The linked flexible tracking truss photovoltaic support system according to claim 1, wherein: The end truss beam (2) can be formed by welding or bolt connection of round steel pipes, angle steels, etc., and a reinforcing plate is required for reinforcement at the connection with the cable anchor (15).

6. The linked flexible tracking truss photovoltaic support system according to claim 1, wherein: The four-leg steel upright frame (6) is prefabricated and welded with I-beams or square steels and is integrally installed at the construction site.

7. The linked flexible tracking truss photovoltaic support system according to claim 1, characterized in that: The rigid connecting rod (10) is made of I-beam or square steel.

8. The linkage type flexible tracking truss photovoltaic support system according to claim 1, characterized in that: The wind-resistant bracing rod (9) is made of round steel pipe, C-shaped steel or square steel.

9. The linked flexible tracking truss photovoltaic support system according to claim 1, characterized in that: The inclination angle adjustment process is as follows: When the control mechanism obtains the instruction for inclination adjustment through sensor analysis, the driving mechanism operates to drive all the telescopic struts in the system to extend and retract synchronously, thereby driving the synchronous rotation of the end truss beam (2) and the middle steel beam (7). The load-bearing upper cable (3) and the load-bearing lower cable (4) installed on the end truss beam (2) and the middle steel beam (7) will rotate synchronously, thus driving the rotation of the photovoltaic module (1) installed on the load-bearing upper cable (3) to adjust its inclination; the wind-resistant struts (9) rotate synchronously with the load-bearing upper cable (3) and the load-bearing lower cable (4), and the front and rear rows of wind-resistant struts (9) maintain linkage through the rotating connecting rod (8) during the rotation process.

10. An installation method for a linkage type flexible tracking truss photovoltaic support system according to any one of claims 1 to 9, comprising the following steps: S1. Mark the basic points according to the GPS positioning, construct the foundation of the flexible tracking photovoltaic support system, and ensure that the deviation of the foundation position and elevation is within the allowable range of the design; S2. Pre-assemble the four-legged steel upright frame (6) of the end support and the end truss beam (2) for integral hoisting; S3. Install the four-corner steel upright frame (6) and the middle steel column (11), and install the rigid connecting rod (10) on the front and rear rows of steel columns; S4. Hoist and install the prefabricated end truss beam (2) on the four-legged steel upright frame (6) of the end support, and install the middle steel beam (7) on the middle column (11); S5. Install the driving device (5) on each support; S6. Tension the load-bearing upper cable (3) to its designed pre-tension, then install the wind-resistant struts (9) and the load-bearing lower cable (4). After the installation of the wind-resistant struts (9) is completed, tension the load-bearing lower cable (4) to its designed pre-tension; S7. Install the front and rear rows of small rotating connecting rods (12) and the rotating connecting rod (8) to connect the wind-resistant struts (9), and debug whether the entire structural system has the functions of adjustable inclination and control; S8. Install the photovoltaic modules (1) on the load-bearing upper cable (3) according to the designed spacing, and thus complete the construction and installation of the entire flexible tracking photovoltaic support system.

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