Linkage flexible photovoltaic tracking mechanism and photovoltaic system

Abstract

The utility model relates to photovoltaic power generation technical field especially relates to a kind of linkage flexible photovoltaic tracking mechanism and photovoltaic system, linkage flexible photovoltaic tracking mechanism includes multiple rows of tracking support and at least one linkage unit.Each row of tracking support includes single-row transmission unit and multiple rotatable support units, and rotatable support unit is used to support photovoltaic module.Each linkage unit includes driving member, at least three linkage wheels and linkage cable, at least three linkage wheels include linkage driving wheel and at least two linkage transmission wheels, driving member can drive linkage driving wheel to rotate, and linkage driving wheel can drive at least two linkage transmission wheels synchronous rotation by linkage cable, at least three linkage wheels are one-to-one correspondence and are arranged at at least three rows of tracking support, and linkage wheel is configured to drive single-row transmission unit of the same row, to make single-row transmission unit can drive multiple rotatable support units of the same row adjust the inclination angle of photovoltaic module.Photovoltaic system includes photovoltaic module and above-mentioned linkage flexible photovoltaic tracking mechanism.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a linkage flexible photovoltaic tracking mechanism and photovoltaic system. Background Technology

[0002] Existing photovoltaic (PV) systems often use fixed brackets to support the PV modules. However, power generation is unstable due to seasonal variations, resulting in low overall light utilization. Therefore, adjustable PV tracking mechanisms have seen rapid development. Current multi-row linked PV tracking mechanisms mostly use rigid linkages in their drive units, requiring high assembly precision and exhibiting poor terrain adaptability. They need flat terrain or leveled sites, and terrain subsidence during operation can cause drive failure. Furthermore, due to the limitations of rigid materials, the drive output torque cannot be too high, and the number of drives remains relatively large. Utility Model Content

[0003] One objective of this invention is to provide a linkage flexible photovoltaic tracking mechanism that can improve adaptability to different terrains, reduce the number of drives, and lower costs.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A linkage flexible photovoltaic tracking mechanism is provided, comprising:

[0006] A multi-row tracking bracket, each row of which includes a single-row transmission unit and multiple rotatable support units, wherein the rotatable support units are used to support photovoltaic modules;

[0007] At least one linkage unit, each linkage unit including a driving component, at least three linkage wheels and a linkage cable, the at least three linkage wheels including one linkage drive wheel and at least two linkage transmission wheels, the driving component being able to drive the linkage drive wheel to rotate, the linkage drive wheel being able to drive at least two linkage transmission wheels to rotate synchronously via the linkage cable, the at least three linkage wheels being arranged one-to-one at at least three rows of the tracking brackets, the linkage wheels being configured to drive the single-row transmission units in the same row, so that the single-row transmission units can drive multiple rotatable support units in the same row to adjust the tilt angle of the photovoltaic module.

[0008] Optionally, each linkage unit includes three linkage wheels. In the three rows of tracking brackets controlled by the same linkage unit, the linkage drive wheel is located at the middle row of tracking brackets, or the linkage drive wheel is located at one end of the tracking bracket.

[0009] Optionally, each of the linkage units includes three linkage wheels, and the linkage cable is a ring cable;

[0010] Each of the linkage units includes a ring cable, with its two ends respectively sleeved on two linkage wheels located at the ends, and its two middle sections respectively wound around the linkage wheel in the middle at least once;

[0011] Alternatively, each of the linkage units includes two annular cables, one end of each annular cable being sleeved on the linkage drive wheel, and the other end being sleeved on the two linkage transmission wheels respectively.

[0012] Optionally, the single-row transmission unit includes a single-row transmission cable and two single-row driven wheels. The single-row transmission cable is a loop cable. The two single-row driven wheels are located at both ends of the tracking bracket along its own extension direction. The two single-row driven wheels are used to support the loop cable. The linkage wheel can drive the two middle sections of the loop cable to move along their respective extension directions.

[0013] Optionally, the rotatable support unit includes a support column, and the support columns of the plurality of rotatable support units are arranged sequentially at intervals along the extension direction of the tracking bracket. The shafts of the two single-row driven wheels are respectively arranged on the support columns at both ends, and the shaft of the linkage wheel is connected to one of the support columns in the middle.

[0014] Optionally, the rotatable support unit includes a support column, on which a support wheel is provided. The outer grooves of the two support wheels are arranged opposite each other to form a limiting space. The limiting space extends along the extension direction of the tracking bracket, and the middle section of the annular cable passes through the limiting space.

[0015] Optionally, the rotatable support unit includes a support column and a support beam, the support beam being rotatably connected to the support column, the support beam rotating in a plane perpendicular to the photovoltaic module, and the support beam being used to support the photovoltaic module.

[0016] Optionally, the rotatable support unit further includes an arc-shaped bracket and two driven cables. Both ends of the arc-shaped bracket are connected to the support beam. One end of one driven cable is connected to a first position of the arc-shaped bracket, and the other end is connected to one of the two middle sections of the loop cable. One end of the other driven cable is connected to a second position of the arc-shaped bracket, and the other end is connected to the other of the two middle sections of the loop cable. The line connecting the first position and the second position is perpendicular to the extension direction of the tracking bracket.

[0017] Optionally, the arc-shaped bracket has a wire groove along its extension direction, and the two driven cables are respectively located in different areas of the wire groove.

[0018] Another objective of this invention is to provide a photovoltaic system that can improve adaptability to different terrains and reduce the number of drives, thereby lowering costs.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] A photovoltaic system is provided, including a photovoltaic module and the aforementioned linkage flexible photovoltaic tracking mechanism, wherein the photovoltaic module is mounted on the tracking bracket.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a linkage flexible photovoltaic tracking mechanism, comprising multiple rows of tracking brackets and at least one linkage unit. Each row of tracking brackets includes a single-row transmission unit and multiple rotatable support units, which support the photovoltaic modules. Each linkage unit includes a drive component, at least three linkage wheels, and a linkage cable. The at least three linkage wheels include a linkage drive wheel and at least two linkage transmission wheels. The drive component can drive the linkage drive wheel to rotate, and the linkage drive wheel can drive at least two linkage transmission wheels to rotate synchronously via the linkage cable. The at least three linkage wheels are arranged one-to-one at at least three rows of tracking brackets. The linkage wheels are configured to drive the single-row transmission unit in the same row, so that the single-row transmission unit can drive the multiple rotatable support units in the same row to adjust the tilt angle of the photovoltaic modules. This flexible photovoltaic tracking mechanism can achieve flexible linkage by setting up linkage units. When there is a problem that the height of a certain row of tracking brackets is inconsistent with that of other rows, or when the heights of at least three rows of tracking brackets are different, it will not cause linkage failure. Moreover, only one drive mechanism is needed for at least three rows of tracking brackets. The drive mechanism drives the linkage drive wheel, and the linkage drive wheel drives the linkage transmission wheel to rotate synchronously through the linkage cable. It is no longer necessary to configure a drive mechanism for each row of tracking brackets, which can greatly reduce the number of drives and reduce costs.

[0023] This invention also provides a photovoltaic system, including photovoltaic modules and the aforementioned linked flexible photovoltaic tracking mechanism, with the photovoltaic modules mounted on a tracking bracket. This photovoltaic system can improve adaptability to different terrains and reduce the number of drives, thus lowering costs. Attached Figure Description

[0024] Figure 1 This is a simplified first-view schematic diagram of the linkage flexible photovoltaic tracking mechanism provided in this embodiment of the utility model;

[0025] Figure 2 This is a simplified schematic diagram from a second perspective of the linkage flexible photovoltaic tracking mechanism provided in this embodiment of the present invention;

[0026] Figure 3 This is a partial structural schematic diagram of the photovoltaic system provided in an embodiment of the present invention from a third-view perspective;

[0027] Figure 4This is a partially enlarged view of the photovoltaic system (including the linkage drive wheel) provided in an embodiment of the present invention;

[0028] Figure 5 This is a partially enlarged view of the photovoltaic system (including the linkage transmission wheel) provided in an embodiment of the present invention;

[0029] Figure 6 This is a partially enlarged view of the photovoltaic system (including a single row of driven wheels) provided in an embodiment of the present invention;

[0030] Figure 7 This is a partial enlarged view of the photovoltaic system (excluding the drive wheel and single row of driven wheels) provided in the embodiment of this utility model;

[0031] Figure 8 This is a partial enlarged view of the photovoltaic system (including support wheels) provided in an embodiment of this utility model.

[0032] In the picture:

[0033] 100. Tracking bracket;

[0034] 110. Single-row transmission unit; 111. Single-row transmission cable; 112. Single-row driven pulley;

[0035] 120. Rotatable support unit; 121. Column; 122. Support wheel; 123. Support beam; 124. Arc-shaped bracket; 125. Driven cable; 126. Reversing wheel;

[0036] 130. Support cable;

[0037] 200. Linkage unit; 201. Linkage cable; 202. Linkage drive wheel; 203. Linkage transmission wheel;

[0038] 900. Photovoltaic modules. Detailed Implementation

[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the drawings, not all of them.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] Existing photovoltaic (PV) systems often use fixed brackets to support the PV modules. However, power generation is unstable due to seasonal variations, resulting in low overall light utilization. Therefore, adjustable PV tracking mechanisms have seen rapid development. Current multi-row linked PV tracking mechanisms mostly use rigid linkages in their drive units, requiring high assembly precision and exhibiting poor terrain adaptability. They need flat terrain or leveled sites, and terrain subsidence during operation can cause drive failure. Furthermore, due to the limitations of rigid materials, the drive output torque cannot be too high, and the number of drives remains relatively large.

[0043] Therefore, this embodiment provides a linkage flexible photovoltaic tracking mechanism to solve the above problems. This linkage flexible photovoltaic tracking mechanism can improve the adaptability to different terrains and reduce the number of drives, thereby reducing costs.

[0044] like Figures 1-7 As shown, the linkage flexible photovoltaic tracking mechanism of this embodiment includes multiple rows of tracking brackets 100 and at least one linkage unit 200. One linkage unit 200 can provide driving force for adjusting the tracking angle of at least three rows of tracking brackets 100.

[0045] Each row of tracking brackets 100 includes a single-row transmission unit 110 and multiple rotatable support units 120, which are used to support photovoltaic modules 900. Each linkage unit 200 includes a driving component, at least three linkage wheels, and a linkage cable 201. The at least three linkage wheels include a linkage drive wheel 202 and at least two linkage transmission wheels 203. The driving component can drive the linkage drive wheel 202 to rotate, and the linkage drive wheel 202 can drive at least two linkage transmission wheels 203 to rotate synchronously through the linkage cable 201. The at least three linkage wheels are arranged one-to-one at at least three rows of tracking brackets 100. The linkage wheels are configured to drive the single-row transmission unit 110 in the same row, so that the single-row transmission unit 110 can drive the multiple rotatable support units 120 in the same row to adjust the tilt angle of the photovoltaic module 900.

[0046] This flexible photovoltaic tracking mechanism can achieve flexible linkage by setting up linkage unit 200. When the height of a certain row of tracking brackets 100 is inconsistent with that of other rows, or when the heights of at least three rows of tracking brackets 100 are different, the linkage will not fail. Moreover, only one drive mechanism is needed for at least three rows of tracking brackets 100. The drive mechanism drives the linkage drive wheel 202, and the linkage drive wheel 202 drives the linkage transmission wheel 203 to rotate synchronously through the linkage cable 201. It is no longer necessary to configure a drive mechanism for each row of tracking brackets 100, which can greatly reduce the number of drives and reduce costs.

[0047] Optionally, in this embodiment, each linkage unit 200 includes three linkage wheels. In the three rows of tracking brackets 100 controlled by the same linkage unit 200, the linkage drive wheel 202 is located at the middle row of tracking brackets 100, and each of the two rows of tracking brackets 100 on both sides is provided with a linkage transmission wheel 203. In other embodiments, the linkage drive wheel 202 may also be located at one end of the tracking bracket 100.

[0048] Optionally, in this embodiment, each linkage unit 200 includes three linkage wheels, and the linkage cable 201 is an annular cable. Optionally, in this embodiment, each linkage unit 200 includes an annular cable, with its two ends respectively sleeved on two linkage wheels located at the ends, and its two middle sections respectively wound around the middle linkage wheel at least once. That is, the linkage drive wheel 202 drives two linkage transmission wheels 203 to rotate synchronously through an annular cable.

[0049] Further optionally, in this embodiment, one linkage transmission wheel 203, one linkage drive wheel 202, and another linkage transmission wheel 203 are arranged in sequence, and the two ends of the annular cable are respectively sleeved on the two linkage transmission wheels 203. The two middle sections of the annular cable extend along the arrangement direction of the multi-row tracking brackets 100, and the two middle sections of the annular cable are respectively wound around the linkage drive wheel 202 in the middle at least once.

[0050] Optionally, in other embodiments, each linkage unit 200 includes two annular cables, one end of which is sleeved on the linkage drive wheel 202, and the other end is correspondingly sleeved on the two linkage transmission wheels 203. That is, the linkage drive wheel 202 drives one linkage transmission wheel 203 to rotate synchronously through one annular cable, and drives the other linkage transmission wheel 203 to rotate synchronously through the other annular cable.

[0051] Optionally, the single-row transmission unit 110 is also a flexible structure. That is, each row of tracking brackets 100 also synchronously controls each rotatable support unit 120 through a flexible structure, so that multiple rotatable support units 120 synchronously adjust the tilt angle of the photovoltaic module 900. Therefore, when a certain rotatable support unit 120 in the same row of tracking brackets 100 has a height inconsistent with other rotatable support units 120, or when the heights of multiple rotatable support units 120 in the same row of tracking brackets 100 are different, it will not cause a linkage failure, ensuring that the tilt angle of the photovoltaic module 900 can still be adjusted when the terrain deforms.

[0052] Optionally, the single-row transmission unit 110 includes a single-row transmission cable 111 and two single-row driven pulleys 112. Figure 6 The single-row driven wheel 112 at one end is shown. The single-row drive cable 111 is a loop cable, and the two single-row driven wheels 112 are located at both ends of the tracking bracket 100 along its own extension direction. The two single-row driven wheels 112 are used to support the loop cable so that the loop cable extends along the extension direction of the tracking bracket 100. The drive wheel can drive the two middle sections of the loop cable to move along their respective extension directions.

[0053] Optionally, each rotatable support unit 120 includes a support column 121, the bottom of which is fixed to the ground, serving as a bottom support. Multiple rotatable support units 120 are arranged at intervals along the extension direction of the tracking bracket 100, i.e., multiple support columns 121 are arranged at intervals along the extension direction of the tracking bracket 100. The axles of two single-row driven wheels 112 are respectively mounted on the support columns 121 at both ends, and the axle of the driven wheel is connected to one of the support columns 121 in the middle.

[0054] Optionally, such as Figure 8 As shown, to limit the movement of the single-row transmission cable 111, a support wheel 122 is provided on the support column 121. The outer grooves of the two support wheels 122 are arranged opposite each other to form a limiting space. The limiting space extends along the extension direction of the tracking bracket 100, and the middle section of the annular cable passes through the limiting space. In this embodiment, the two support wheels 122 form a group, and the two support wheels 122 in a group are arranged sequentially in the vertical direction. The axial directions of the two support wheels 122 are both horizontal, and the axial directions of the two support wheels 122 are both perpendicular to the extension direction of the tracking bracket 100.

[0055] Optionally, such as Figure 7 As shown, the rotatable support unit 120 includes a support beam 123, which is rotatably connected to the support column 121. The support beam 123 rotates in a plane perpendicular to the photovoltaic module 900 and is used to support the photovoltaic module 900. Optionally, the pivot of the support beam 123 is located at the middle of the support beam 123, and the extension direction of the pivot is parallel to the extension direction of the tracking bracket 100.

[0056] Optionally, the tracking bracket 100 includes at least two support cables 130, each extending along the extension direction of the tracking bracket 100, and each support cable 130 connecting to all the support beams 123. The photovoltaic module 900 is connected to the support cable 130. As all the support beams 123 of the same row of tracking brackets 100 rotate, the height of the support cable 130 will also be adjusted accordingly, and the tilt angle of the photovoltaic module 900 will change accordingly.

[0057] Optionally, such as Figure 4 As shown, the rotatable support unit 120 also includes an arc-shaped bracket 124 and two driven cables 125. Both ends of the arc-shaped bracket 124 are connected to the support beam 123. One end of one driven cable 125 is connected to the first position of the arc-shaped bracket 124, and the other end is connected to one of the two middle sections of the loop cable. One end of the other driven cable 125 is connected to the second position of the arc-shaped bracket 124, and the other end is connected to the other of the two middle sections of the loop cable. The line connecting the first position and the second position is perpendicular to the extension direction of the tracking bracket 100.

[0058] Optionally, a wire-passing groove is formed on the arc-shaped bracket 124 along its own extension direction, and the two driven cables 125 are respectively located in different areas of the wire-passing groove. Optionally, the first position is one end of the wire-passing groove, and the second position is the other end of the wire-passing groove.

[0059] Optionally, the portion of the driven cable 125 located within the cable groove has multiple fixed positions with the arc-shaped bracket 124, and each fixed position is fixed by a fastener, such as a bolt.

[0060] When the linkage wheel drives the two middle sections of the annular cable to move left and right respectively along their extension direction, one of the two driven cables 125 of the same rotatable support unit 120 is stretched, causing one end of the arc-shaped bracket 124 to move down, while the other is relaxed, causing the other end of the arc-shaped bracket 124 to move up. Of course, for the two ends of the arc-shaped bracket 124 to move up and down simultaneously, one driven cable 125 must be stretched and the other relaxed. By setting the arc-shaped bracket 124, the stable rotation of the support beam 123 can be guaranteed.

[0061] Optionally, such as Figure 6As shown, each rotatable support unit 120 also includes a pair of reversing wheels 126. The two reversing wheels 126 are located on both sides of the support column 121, and the rotation shafts of the two reversing wheels 126 are connected to the support column 121. The reversing wheels 126 are symmetrically arranged on both sides of the support column 121. The reversing wheels 126, the top of the arc-shaped bracket 124, and the single-row transmission cable 111 are not at the same height, and the reversing wheels 126 are at a certain angle to the horizontal direction. Specifically, the connection positions of the two driven cables 125 and the single-row transmission cable 111 are all located on the same side of the support column 121 along the extension direction of the tracking bracket 100. The reversing wheels 126 are tilted towards this side. One driven cable 125 passes around one reversing wheel 126 to change its extension direction and smoothly transition to the single-row transmission cable 111. The two driven cables 125 correspond exactly to the two reversing wheels 126. That is, one end of each of the two driven cables 125 is fixed to the top of the arc-shaped bracket 124, and after passing through the cable groove, they pass through a reversing wheel 126 from different directions and are connected to the two middle sections of the single-row transmission cable 111. Each rotatable support unit 120 is set according to this scheme.

[0062] Optionally, such as Figure 4 As shown, in this embodiment, the linkage drive wheel 202 needs to have four sections to respectively wind the two middle sections of the linkage cable 201 and the two middle sections of the single-row transmission cable 111. Optionally, in this embodiment, the linkage drive wheel 202 is a drum, and the drum is provided with four sections along its own axial direction to ensure that the linkage cable 201 and the single-row transmission cable 111 are located at different heights.

[0063] Optionally, such as Figure 5 As shown, in this embodiment, the linkage drive wheel 203 needs to have three sections to respectively wind one end of the linkage cable 201 and the two middle sections of the single-row drive cable 111. Optionally, in this embodiment, the linkage drive wheel 202 is also a drum, and the drum is provided with three sections along its own axial direction to respectively wind one end of the linkage cable 201 and the two middle sections of the single-row drive cable 111.

[0064] This embodiment also provides a photovoltaic system, including a photovoltaic module 900 and the aforementioned linked flexible photovoltaic tracking mechanism, wherein the photovoltaic module 900 is mounted on the tracking bracket 100. This photovoltaic system can improve its adaptability to different terrains and reduce the number of drives, thereby lowering costs.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A linkage flexible photovoltaic tracking mechanism, characterized in that, include: A multi-row tracking bracket (100), each row of the tracking bracket (100) includes a single-row transmission unit (110) and multiple rotatable support units (120), the rotatable support units (120) being used to support photovoltaic modules (900); At least one linkage unit (200) is provided, each linkage unit (200) including a driving member, at least three linkage wheels and a linkage cable (201). The at least three linkage wheels include one linkage drive wheel (202) and at least two linkage transmission wheels (203). The driving member can drive the linkage drive wheel (202) to rotate. The linkage drive wheel (202) can drive at least two linkage transmission wheels (203) to rotate synchronously through the linkage cable (201). The at least three linkage wheels are arranged one-to-one at at least three rows of the tracking brackets (100). The linkage wheels are configured to drive the single-row transmission units (110) in the same row so that the single-row transmission units (110) can drive multiple rotatable support units (120) in the same row to adjust the tilt angle of the photovoltaic module (900).

2. The linkage flexible photovoltaic tracking mechanism according to claim 1, characterized in that, Each of the linkage units (200) includes three linkage wheels. In the three rows of tracking brackets (100) controlled by the same linkage unit (200), the linkage drive wheel (202) is located at the middle row of tracking brackets (100), or the linkage drive wheel (202) is located at one end of the tracking bracket (100).

3. The linkage flexible photovoltaic tracking mechanism according to claim 1, characterized in that, Each of the linkage units (200) includes three linkage wheels, and the linkage cable (201) is a ring cable; Each of the linkage units (200) includes a ring cable, the two ends of which are respectively sleeved on two linkage wheels located at the ends, and the two middle sections of the ring cable are respectively wound around the linkage wheel in the middle at least once; Alternatively, each of the linkage units (200) includes two annular cables, one end of each annular cable being sleeved on the linkage drive wheel (202), and the other end being sleeved on the two linkage transmission wheels (203) respectively.

4. The linkage flexible photovoltaic tracking mechanism according to any one of claims 1-3, characterized in that, The single-row transmission unit (110) includes a single-row transmission cable (111) and two single-row driven wheels (112). The single-row transmission cable (111) is a loop cable. The two single-row driven wheels (112) are located at both ends of the tracking bracket (100) along its own extension direction. The two single-row driven wheels (112) are used to support the loop cable. The linkage wheel can drive the two middle sections of the loop cable to move along their respective extension directions.

5. The linkage flexible photovoltaic tracking mechanism according to claim 4, characterized in that, The rotatable support unit (120) includes a support column (121). The support columns (121) of the plurality of rotatable support units (120) are arranged sequentially at intervals along the extension direction of the tracking bracket (100). The shafts of the two single-row driven wheels (112) are respectively arranged on the support columns (121) at both ends. The shaft of the linkage wheel is connected to one of the support columns (121) in the middle.

6. The linkage flexible photovoltaic tracking mechanism according to claim 4, characterized in that, The rotatable support unit (120) includes a support column (121) and a support wheel (122) is provided on the support column (121). The outer ring grooves of the two support wheels (122) are arranged opposite each other to form a limiting space. The limiting space extends along the extension direction of the tracking bracket (100), and the middle section of the annular cable passes through the limiting space.

7. The linkage flexible photovoltaic tracking mechanism according to claim 4, characterized in that, The rotatable support unit (120) includes a support column (121) and a support beam (123). The support beam (123) is rotatably connected to the support column (121). The support beam (123) rotates in a plane perpendicular to the photovoltaic module (900). The support beam (123) is used to support the photovoltaic module (900).

8. The linkage flexible photovoltaic tracking mechanism according to claim 7, characterized in that, The rotatable support unit (120) further includes an arc-shaped bracket (124) and two driven cables (125). Both ends of the arc-shaped bracket (124) are connected to the support beam (123). One end of one driven cable (125) is connected to a first position of the arc-shaped bracket (124), and the other end is connected to one of the two middle sections of the loop cable. One end of the other driven cable (125) is connected to a second position of the arc-shaped bracket (124), and the other end is connected to the other of the two middle sections of the loop cable. The line connecting the first position and the second position is perpendicular to the extension direction of the tracking bracket (100).

9. The linkage flexible photovoltaic tracking mechanism according to claim 8, characterized in that, The arc-shaped bracket (124) has a wire groove along its extension direction, and the two driven cables (125) are respectively located in different areas of the wire groove.

10. A photovoltaic system, characterized in that, It includes a photovoltaic module (900) and a linkage flexible photovoltaic tracking mechanism as described in any one of claims 1-9, wherein the photovoltaic module (900) is mounted on the tracking bracket (100).

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