Photovoltaic system

Abstract

The application relates to a photovoltaic system, which comprises a first support, a plurality of rotating shafts, a plurality of photovoltaic panels and a driving device. The driving device is connected with the rotating shafts through a transmission assembly to drive each rotating shaft to rotate around its own axis. The transmission assembly comprises a reciprocating pull rod, a first rotating wheel and a second rotating wheel which are rotatably connected to the reciprocating pull rod, a plurality of third rotating wheels, a plurality of fourth rotating wheels, a first rope, a second rope, a plurality of third ropes and a plurality of fourth ropes. The transmission assembly for transmitting driving force to the photovoltaic panels is low in cost and high in reliability, can relatively evenly transmit rotating torque to the rotating shafts for driving the photovoltaic panels, effectively prevents the rotating shafts and the photovoltaic panels from being twisted and deformed, and has a limiting function for the rotating angle of the photovoltaic panels.

Description

Technical Field

[0001] This application relates to the field of photovoltaics, specifically to a photovoltaic system. Background Technology

[0002] Solar energy is being used more and more as a clean and renewable energy source, especially tracking photovoltaic power generation technology, which is an emerging solar energy utilization technology following conventional photovoltaic power generation technology.

[0003] Solar tracking systems can keep photovoltaic panels facing the sun as directly as possible, increasing the power generation of solar photovoltaic modules, effectively reducing the investment cost of photovoltaic power generation systems, and improving the utilization rate of solar photovoltaic modules.

[0004] Photovoltaic tracking systems that use multiple photovoltaic panels sharing a common support structure represent a future trend in solar tracking photovoltaic systems. Currently, commonly used tracking photovoltaic support structures primarily employ a single-motor linkage multi-point linkage structure, but this structure has several drawbacks:

[0005] For example, the parts are expensive, installation is inconvenient, and manual assembly is costly; the connecting rods in the transmission mechanism are very long, which can easily lead to twisting and deformation, reducing the lifespan of the tracking system; the transmission mechanism cannot evenly transmit the driving force provided by the drive device to the photovoltaic panel, which can cause the photovoltaic panel to be easily twisted and deformed or even structurally damaged; and the transmission mechanism itself does not have a limiting function for the transmission angle. If the motor's rotation angle is not properly controlled, the photovoltaic panel may collide with the bracket and be damaged. Summary of the Invention

[0006] In order to solve at least one of the above problems, this application proposes a photovoltaic system in which the transmission component for transmitting driving force to the photovoltaic panel is inexpensive and highly reliable, and can transmit torque to the shaft that drives the photovoltaic panel in a relatively balanced manner, effectively preventing the shaft and the photovoltaic panel from twisting and deforming.

[0007] The technical solution of this application is:

[0008] A photovoltaic system, comprising:

[0009] First support;

[0010] Multiple rotating shafts are arranged parallel to each other along a first direction, and each of the rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis.

[0011] Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to one of the multiple rotating shafts in a corresponding manner; and

[0012] A driving device, which is connected to the plurality of rotating shafts via a transmission assembly, to drive each of the rotating shafts to rotate around its respective axis;

[0013] The transmission assembly includes:

[0014] A reciprocating tie rod, which can reciprocate along the first direction under the drive of the driving device;

[0015] A first and a second wheel are rotatably connected to the reciprocating tie rod;

[0016] Multiple third rotating wheels are coaxially fixed to multiple rotating shafts, and the multiple third rotating wheels are arranged in a first row at intervals along the first direction;

[0017] Multiple fourth rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple fourth rotating wheels are arranged in a second row at intervals along the first direction, wherein the second row is parallel to the first row;

[0018] A first rope is wound around the first reel. The first rope includes a first rope segment and a second rope segment that extend forward along the first direction after being drawn out from both sides of the first reel.

[0019] The second rope is wound around the second reel. The second rope includes a third rope segment and a fourth rope segment that are respectively led out from both sides of the second reel and extend in the negative direction of the first direction. The first rope segment and the third rope segment correspond to the first row, and the second rope segment and the fourth rope segment correspond to the second row.

[0020] Multiple third ropes, each of the third pulleys corresponding to two third ropes, with one end of each pair of third ropes around and fixed to the third pulley in opposite directions, and the other ends of each pair of third ropes fixed to the first rope segment and the third rope segment, respectively; and

[0021] Multiple fourth ropes, each of the fourth reels corresponds to two fourth ropes, and one end of the two fourth ropes corresponding to each fourth reel is wrapped around and fixed to the fourth reel in opposite directions, and the other end of the two fourth ropes corresponding to each fourth reel is fixed to the second rope segment and the fourth rope segment respectively.

[0022] In one optional design, the transmission assembly includes a first guide wheel, a second guide wheel, a third guide wheel, and a fourth guide wheel that are rotatably connected to the first bracket and are arranged in a rectangular pattern. The first guide wheel and the second guide wheel are respectively disposed on opposite sides of the plurality of third rotating wheels along the first direction, and the third guide wheel and the fourth guide wheel are respectively disposed on opposite sides of the plurality of fourth rotating wheels along the first direction. The first guide wheel, the second guide wheel, the third guide wheel, and the fourth guide wheel are arranged sequentially along the circumferential direction.

[0023] One end of the first rope extends directly in the positive direction of the first direction after passing through the first spool and then around the first guide wheel, thus forming the first rope segment; the other end of the first rope extends directly in the positive direction of the first direction after passing through the first spool and then around the fourth guide wheel, thus forming the second rope segment; one end of the second rope extends directly in the negative direction of the first direction after passing through the second spool and then around the second guide wheel, thus forming the third rope segment; the other end of the second rope extends directly in the negative direction of the first direction after passing through the second spool and then around the third guide wheel, thus forming the fourth rope segment.

[0024] In one optional design, the transmission assembly includes:

[0025] A fifth guide wheel and a sixth guide wheel, rotatably connected to the first bracket and located between the first guide wheel and the fourth guide wheel, and

[0026] A seventh guide wheel and an eighth guide wheel are rotatably connected to the first bracket and located between the second guide wheel and the third guide wheel;

[0027] One end of the first rope is wound around the first rotating wheel and then passes around the fifth guide wheel and the first guide wheel in sequence. The other end of the first rope segment is wound around the first rotating wheel and then passes around the sixth guide wheel and the fourth guide wheel in sequence. The first rope between the first rotating wheel and the fifth guide wheel extends along the first direction.

[0028] One end of the second rope exits from the second reel and passes sequentially around the seventh guide wheel and the second guide wheel. The other end of the second rope exits from the second reel and passes sequentially around the eighth guide wheel and the third guide wheel. The second rope between the second reel and the seventh guide wheel extends along the first direction, and the first rope between the second reel and the eighth guide wheel extends along the first direction.

[0029] In one optional design, the reciprocating tie rod is a lead screw extending along the first direction, the transmission assembly further includes a lead screw seat fixed to the first bracket, and a lead screw nut rotatably connected to the lead screw seat and threadedly connected to the lead screw, and the driving device is a motor fixed to the lead screw seat and driving the lead screw nut to rotate.

[0030] In one optional design, the lead screw includes a first rod segment, a first elastic element, a second rod segment, a third rod segment, a fourth rod segment, a fifth rod segment, a sixth rod segment, a second elastic element, and a seventh rod segment connected sequentially along the first direction. The two ends of the third rod segment are threadedly connected to the second rod segment and the fourth rod segment, respectively, thereby adjusting the distance between the second and fourth rod segments by rotating the third rod segment. The two ends of the fifth rod segment are threadedly connected to the fourth and sixth rod segments, respectively, thereby adjusting the distance between the fourth and sixth rod segments by rotating the fifth rod segment. The lead screw nut is specifically threadedly connected to the fourth rod segment.

[0031] In one optional design, at least one of the third pulleys corresponds to two third ropes that are integrally connected, and the non-end positions of the two integrally connected first ropes are fixed on the first pulleys corresponding to the two first ropes; at least one of the fourth pulleys corresponds to two fourth ropes that are integrally connected, and the non-end positions of the two integrally connected fourth ropes are fixed on the second pulleys corresponding to the two fourth ropes.

[0032] In an optional design, the transmission assembly further includes a plurality of ninth guide wheels and a plurality of tenth guide wheels. The plurality of ninth guide wheels are arranged in a third row along the first direction, and each of the plurality of ninth guide wheels corresponds to one of the plurality of third rotating wheels. The plurality of tenth guide wheels are arranged in a fourth row along the first direction, and each of the plurality of tenth guide wheels corresponds to one of the plurality of fourth rotating wheels.

[0033] The third row is parallel to the first row and the two define a third plane; the fourth row is parallel to the second row and the two define a fourth parallel; both the third plane and the fourth plane are perpendicular to the axis of rotation.

[0034] One end of each of the two third ropes corresponding to each of the third wheels passes around the corresponding ninth guide wheel in opposite directions, and then wraps around and fixes to the third wheel in opposite directions. One end of each of the two fourth ropes corresponding to each of the fourth wheels passes around the corresponding tenth guide wheel in opposite directions, and then wraps around and fixes to the fourth wheel in opposite directions.

[0035] The two third ropes corresponding to each of the third rotating wheels are arranged in an X-shape between the third rotating wheel and the corresponding ninth guide wheel, and the two fourth ropes corresponding to each of the fourth rotating wheels are arranged in an X-shape between the fourth rotating wheel and the corresponding tenth guide wheel.

[0036] In one optional design, the sum of the surrounding angles of the two third ropes corresponding to each third wheel on the third wheel is less than 360 degrees, and the sum of the surrounding angles of the two fourth ropes corresponding to each fourth wheel on the fourth wheel is less than 360 degrees.

[0037] One alternative design includes:

[0038] First support;

[0039] Multiple rotating shafts are arranged parallel to each other along a first direction, and each of the rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis.

[0040] Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to one of the multiple rotating shafts in a corresponding manner; and

[0041] A driving device, which is connected to the plurality of rotating shafts via a transmission assembly, to drive each of the rotating shafts to rotate around its respective axis;

[0042] The transmission assembly includes:

[0043] A reciprocating tie rod, which can reciprocate along the first direction under the drive of the driving device;

[0044] A first and a second wheel are rotatably connected to the reciprocating tie rod;

[0045] Multiple third rotating wheels are coaxially fixed to multiple rotating shafts, and the multiple third rotating wheels are arranged in a first row at intervals along the first direction;

[0046] Multiple fourth rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple fourth rotating wheels are arranged in a second row at intervals along the first direction, wherein the second row is parallel to the first row;

[0047] A first rope is wound around the first rotating wheel. The two ends of the first rope are respectively led out from both sides of the first rotating wheel and respectively connected to a first pull rod and a second pull rod extending along the first direction.

[0048] The second rope is wound around the second reel. The two ends of the second rope are respectively led out from both sides of the second reel and connected to the third and fourth pull rods extending along the first direction. The first and third pull rods correspond to the first row, and the second and fourth pull rods correspond to the second row.

[0049] Multiple third ropes, each of the third pulleys corresponding to two third ropes, with one end of each pair of third ropes around and fixed to the third pulley in opposite directions, and the other end of each pair of third ropes fixed to the first pull rod and the third pull rod, respectively; and

[0050] Multiple fourth ropes, each of the fourth reels corresponds to two fourth ropes, and one end of the two fourth ropes corresponding to each fourth reel is wrapped around and fixed to the fourth reel in opposite directions, and the other end of the two fourth ropes corresponding to each fourth reel is fixed to the second pull rod and the fourth pull rod respectively.

[0051] In one optional design, the reciprocating tie rod is a lead screw extending along the first direction, the transmission assembly further includes a lead screw seat fixed to the first bracket, and a lead screw nut rotatably connected to the lead screw seat and threadedly connected to the lead screw, and the driving device is a motor fixed to the lead screw seat and driving the lead screw nut to rotate.

[0052] In an optional design, the transmission assembly further includes a plurality of ninth guide wheels and a plurality of tenth guide wheels. The plurality of ninth guide wheels are arranged in a third row along the first direction, and each of the plurality of ninth guide wheels corresponds to one of the plurality of third rotating wheels. The plurality of tenth guide wheels are arranged in a fourth row along the first direction, and each of the plurality of tenth guide wheels corresponds to one of the plurality of fourth rotating wheels.

[0053] The third row is parallel to the first row and the two define a third plane; the fourth row is parallel to the second row and the two define a fourth parallel; both the third plane and the fourth plane are perpendicular to the axis of rotation.

[0054] One end of each of the two third ropes corresponding to each of the third wheels passes around the corresponding ninth guide wheel in opposite directions, and then wraps around and fixes to the third wheel in opposite directions. One end of each of the two fourth ropes corresponding to each of the fourth wheels passes around the corresponding tenth guide wheel in opposite directions, and then wraps around and fixes to the fourth wheel in opposite directions.

[0055] The two third ropes corresponding to each of the third rotating wheels are arranged in an X-shape between the third rotating wheel and the corresponding ninth guide wheel, and the two fourth ropes corresponding to each of the fourth rotating wheels are arranged in an X-shape between the fourth rotating wheel and the corresponding tenth guide wheel.

[0056] This application has at least the following beneficial effects:

[0057] 1. The transmission component used to transmit driving force to the photovoltaic panel in this photovoltaic system mainly consists of low-cost ropes. Moreover, the ropes mainly bear tensile stress during use, making them highly reliable, not easily damaged, and with a long service life.

[0058] 2. The transmission components of this photovoltaic system can evenly transmit the power of the drive device to the wheels at both ends of the shaft, thereby balancing the torsional forces at both ends of the shaft and preventing significant torsional deformation of the shaft and the photovoltaic panels on it.

[0059] 3. The various ropes and wheels in the photovoltaic system's drive assembly work together in a specific structure. The mechanical structure of the drive assembly itself can limit the rotation angle of the photovoltaic panel, thereby preventing the photovoltaic panel from colliding with the support, ensuring the service life of the photovoltaic panel, and also facilitating the design of larger photovoltaic panel dimensions, especially length dimensions. Attached Figure Description

[0060] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0061] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic system in Embodiment 1 of this application.

[0062] Figure 2 yes Figure 1 A schematic diagram of the structure after the photovoltaic panels have been removed.

[0063] Figure 3 yes Figure 2 A schematic diagram of the structure after some components have been removed.

[0064] Figure 4 yes Figure 3 Enlarged view of part X1.

[0065] Figure 5 yes Figure 3 Enlarged view of part X2.

[0066] Figure 6 yes Figure 3 Enlarged view of part X3.

[0067] Figure 7 yes Figure 3 Enlarged view of part X4.

[0068] Figure 8 This is a schematic diagram of another photovoltaic system mentioned in Embodiment 1 of this application.

[0069] Figure 9 This is a schematic diagram of the overall structure of the photovoltaic system in Embodiment 2 of this application.

[0070] Figure 10 yes Figure 9 A schematic diagram of the structure after some components have been removed.

[0071] Figure 11 This is a schematic diagram of the reciprocating tie rod in Embodiment 2 of this application.

[0072] Figure 12 This is a schematic diagram of the structure of the third rotating wheel in Embodiment 2 of this application.

[0073] Figure 13 This is a schematic diagram of the structure of the third rope in Embodiment 2 of this application.

[0074] Figure 14 This is a schematic diagram of the cooperation between the third wheel, the third rope, and the connector in Embodiment 2 of this application.

[0075] Figure 15 This is a cross-sectional schematic diagram of the first connector in Embodiment 2 of this application.

[0076] Explanation of reference numerals in the attached figures:

[0077] F1 - First direction;

[0078] 1-First bracket, 2-Rotating shaft, 3-Photovoltaic panel, 4-Drive device, 5-Reciprocating tie rod, 6-First rotating wheel, 7-Second rotating wheel, 8-Third rotating wheel, 9-Fourth rotating wheel, 10-First rope, 11-Second rope, 12-Third rope, 13-Fourth rope, 14-Screw seat, 15-First guide wheel, 16-Second guide wheel, 17-Third guide wheel, 18-Fourth guide wheel, 19-Fifth guide wheel, 20-Sixth guide wheel, 21-Seventh guide wheel, 22-Eighth guide wheel, 23-Ninth guide wheel, 24-Tenth guide wheel, 25-Card block, 26-First connector, 27-Second connector, 28-Third connector, 29-Fourth connector;

[0079] 501 - First segment, 502 - Second segment, 503 - Third segment, 504 - Fourth segment, 505 - Fifth segment, 506 - Sixth segment, 507 - Seventh segment, 508 - First elastic element, 509 - Second elastic element;

[0080] 801 - Card Slot;

[0081] 1001 - First rope segment, 1002 - Second rope segment;

[0082] 1101 - Third rope segment, 1102 - Fourth rope segment;

[0083] 1201 - First card header, 1202 - Second card header;

[0084] 2601-First body, 2602-Second body, 2603-First nut, 2601a-First through hole, 2601b-Third through hole, 2601c-First chamber, 2602a-First screw, 2602b-First slot, 2602c-First guide hole;

[0085] 2701 - Third body, 2702 - Fourth body, 2703 - Second nut, 2701a - Third through hole, 2701b - Fourth through hole, 2701c - Second chamber, 2702a - Second screw, 2702b - Second slot, 2702c - Second guide hole. Detailed Implementation

[0086] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0087] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0088] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0089] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0090] In the description of this application and the claims, the terms "in sequence" or "in order," such as the phrase "A, B, C arranged in sequence," only indicate the order of arrangement of elements A, B, and C, and do not exclude the possibility of arranging other elements between A and B and / or between B and C.

[0091] In the description of this application specification and claims, the term "configured as" is generally interchangeable with "having the ability to," "designed to," "used for," or "capable of," depending on the context.

[0092] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0093] Embodiments of this application will now be described with reference to the accompanying drawings.

[0094] <Example 1>

[0095] Figures 1 to 7 A specific embodiment of the photovoltaic system of this application is shown. The photovoltaic system includes a first support 1, multiple rotating shafts 2, multiple photovoltaic panels 3, and a driving device 4. Wherein:

[0096] Multiple rotating shafts 2 are arranged parallel to each other along a first direction F1, and each rotating shaft 2 is connected to a first support 1 in a manner that allows it to rotate around its own axis. The weight of the rotating shaft 2 is supported by the first support 1. In one specific embodiment, multiple bearing seats are provided on the first support 1, and each rotating shaft 2 is connected to two corresponding bearing seats at both ends.

[0097] Multiple photovoltaic panels 3 are arranged along the first direction F1, and each photovoltaic panel 3 is fixed to a corresponding rotating shaft 2. When the rotating shaft 2 rotates, the photovoltaic panels 3 fixed to the rotating shaft 2 rotate with it, thereby adjusting the angle of the photovoltaic panels 3 facing the light. The weight of the photovoltaic panels 3 is also supported by the first bracket 1. The drive device 4 is connected to the multiple rotating shafts 2 through a transmission assembly to drive each rotating shaft 2 to rotate around its respective axis.

[0098] The transmission assembly includes a reciprocating pull rod 5, a first rotating wheel 6, a second rotating wheel 7, multiple third rotating wheels 8, multiple fourth rotating wheels 9, a first rope 10, a second rope 11, multiple third ropes 12, and multiple fourth ropes 13. Wherein:

[0099] The reciprocating rod 5 can reciprocate along the first direction F1 under the drive of the aforementioned drive device 4. The first rotating wheel 6 and the second rotating wheel 7 are rotatably connected to the reciprocating rod 5. When the drive device 4 drives the reciprocating rod 5 to move, the first rotating wheel 6 and the second rotating wheel 7 connected to the reciprocating rod 5 move accordingly, thereby pulling the relevant rope. Specifically, the reciprocating rod 5 has a first end and a second end that are arranged opposite to each other along the first direction F1, i.e. Figure 3 The left and right ends of the reciprocating rod 5 are reciprocating rods, the first wheel 6 is rotatably connected to the first end of the reciprocating rod 5, and the second wheel 7 is rotatably connected to the second end of the reciprocating rod 5.

[0100] Multiple third rotating wheels 8 are coaxially fixed to multiple rotating shafts 2, and the multiple third rotating wheels 8 are arranged in a row with intervals along the first direction F1. For ease of description, this row containing the multiple third rotating wheels 8 is referred to as the first row.

[0101] Multiple fourth rotating wheels 9 are also coaxially fixed to multiple rotating shafts 2, and the multiple fourth rotating wheels 9 are arranged in a row with intervals along the first direction F1. For ease of description, this row containing the multiple fourth rotating wheels 9 is referred to as the second row. The second row is parallel to the first row.

[0102] The first rope 10 is wound around the first reel 6. The first rope 10 includes a first rope segment 1001 and a second rope segment 1002 that extend from both sides of the first reel 6 in the positive direction of the first direction F1. It should be noted that "the first rope segment 1001 and the second rope segment 1002 that extend from both sides of the first reel 6 in the positive direction of the first direction F1" means that the first rope segment 1001 and the second rope segment 1002 are downstream rope segments on both sides of the first reel 6. Other transition rope segments may exist between them and the first reel 6. This does not mean that the starting ends of the first rope segment 1001 and the second rope segment 1002 are at the first reel 6. For details, please refer to [reference needed]. Figures 3 to 7 To understand.

[0103] The second rope 11 is wound around the second reel 7. The second rope 11 includes a third rope segment 1101 and a fourth rope segment 1102 that extend from both sides of the second reel 7 and both extend in the negative direction of the first direction F1. The first rope segment 1001 and the third rope segment 1101 correspond to the first row mentioned above, and the second rope segment 1002 and the fourth rope segment 1102 correspond to the second row mentioned above.

[0104] It can be understood that the positive and negative directions of the first direction F1 refer to two mutually opposite directions along the first direction F1. Specifically... Figure 2 In the diagram, the positive direction of the first direction F1 is the direction parallel to the right of the paper, and the negative direction of the first direction F1 is the direction parallel to the left of the paper.

[0105] Please refer to Figures 2 to 7 The number of third ropes 12 is twice that of the third wheel 8. Each third wheel 8 corresponds to two third ropes 12. One end of each of the two third ropes 12 corresponding to each third wheel 8 is wrapped around and fixed to the third wheel 8 in opposite directions. The other end of each of the two third ropes 12 corresponding to each third wheel 8 is fixed to the first rope segment 1001 and the third rope segment 1101, respectively.

[0106] The phrase "surrounding and fixing in opposite directions" above has the following meaning: Please refer to section 3 to... Figure 5 For each third wheel 8, one end of one third rope 12 is wrapped around and fixed to the corresponding third wheel 8 in a clockwise direction, and the other end of the third rope 12 is wrapped around and fixed to the third wheel 8 in a counterclockwise direction.

[0107] It is understandable that "around" includes both full circumference and partial circumference (such as half circumference or 1 / 8 circumference).

[0108] Since one end of each of the two matching third ropes 12 is wrapped around and fixed to the corresponding third wheel 8 in opposite directions, when the first third rope 12 pulls the third wheel 8 to rotate, causing the first third rope 12 to be unwound from the third wheel 8, the third wheel 8 will necessarily wind up the second third rope 12.

[0109] The number of fourth ropes 13 is twice that of the fourth wheel 9. Each fourth wheel 9 corresponds to two fourth ropes 13. One end of each of the two fourth ropes 13 corresponding to each fourth wheel 9 is wrapped around and fixed to the fourth wheel 9 in opposite directions. The other ends of each of the two fourth ropes 13 corresponding to each fourth wheel 9 are fixed to the second rope segment 1002 and the fourth rope segment 1102, respectively.

[0110] Please refer to Figure 2 and combined Figure 1 , Figures 3 to 7 If you intend to Figure 1 If each photovoltaic panel 3 rotates clockwise around the axis of the rotating shaft 2 to a horizontal angle, the drive device 4 can be controlled to drive the reciprocating rod 5. Figure 2 Moving to the left, the second wheel 7 connected to the second end of the reciprocating lever 5 pulls the second rope 11 to the left, causing the third rope segment 1101 and the fourth rope segment 1102 of the second rope 11 to move to the right. The rightward movement of the third rope segment 1101 and the fourth rope segment 1102 pulls the respective third wheel 8 and the respective fourth wheel 9. Figure 2 Rotating clockwise, thereby driving Figure 1 Each photovoltaic panel 3 rotates clockwise to a horizontal angle. During this process, the "release amount" of the first rope 10 is approximately equal to the "retraction amount" of the second rope 11. Moreover, during this process, the rotatable second wheel 7 balances the tension of the second rope 11 on the third wheel 8 and the fourth wheel 9, ensuring that the tension on the third wheel 8 from the third rope segment 1101 is equal to the tension on the fourth wheel 9 from the fourth rope segment 1102. This, in turn, keeps the torsional force on the shaft 2 from the third wheel 8 and the fourth wheel 9 consistent, preventing significant torsional deformation of the shaft 2 and the photovoltaic panels 3 on it.

[0111] Similarly, if you intend to Figure 1 If each photovoltaic panel 3 rotates counterclockwise around the axis of the rotating shaft 2 to a more tilted angle, the drive device 4 can be controlled to drive the reciprocating rod 5. Figure 2 The device moves to the right, using the first rope 10 to pull each rotating shaft 2 counterclockwise. During this process, the "release amount" of the second rope 11 is approximately equal to the "recovery amount" of the first rope 10.

[0112] In this embodiment, a third rotating wheel 8 and a fourth rotating wheel 9, spaced apart from each other, are coaxially fixed on each rotating shaft 2. During operation, the third rotating wheel 8 and the fourth rotating wheel 9 apply rotational torque to the rotating shaft 2 under the pull of related ropes, which improves the rotational smoothness of the rotating shaft 2, reduces the degree of torsional deformation of the rotating shaft 2, and thus prevents deformation of the photovoltaic panel 3 fixed on the rotating shaft 2. Preferably, the third rotating wheel 8 and the fourth rotating wheel 9 are respectively connected to opposite ends of the rotating shaft 2.

[0113] Please refer to again Figure 3 and combined Figure 2 , Figures 4 to 7 In this embodiment, to better guide the first rope 10 and the second rope 11 to obtain the aforementioned first rope segment 1001, second rope segment 1002, third rope segment 1101, and fourth rope segment 1102, the transmission assembly further includes a first guide wheel 15, a second guide wheel 16, a third guide wheel 17, and a fourth guide wheel 18 rotatably connected to the first support 1. The first guide wheel 15, second guide wheel 16, third guide wheel 17, and fourth guide wheel 18 are arranged in a rectangular pattern. The first guide wheel 15 and second guide wheel 16 are respectively positioned on opposite sides of a plurality of third rotating wheels 8 along the first direction F1, and the third guide wheel 17 and fourth guide wheel 18 are respectively positioned on opposite sides of a plurality of fourth rotating wheels 9 along the first direction F1. The first guide wheel 15, second guide wheel 16, third guide wheel 17, and fourth guide wheel 18 are arranged sequentially along the circumferential direction (rectangular circumference).

[0114] One end of the first rope 10 exits from the first reel 6, then passes over the first guide wheel 15 and extends directly in the positive direction of the first direction F1, thus forming the first rope segment 1001. The other end of the first rope 10 exits from the first reel 6, then passes over the fourth guide wheel 18 and extends directly in the positive direction of the first direction F1, thus forming the second rope segment 1002. One end of the second rope 11 exits from the second reel 7, then passes over the second guide wheel 16 and extends directly in the negative direction of the first direction F1, thus forming the third rope segment 1101. The other end of the second rope 11 exits from the second reel 7, then passes over the third guide wheel 17 and extends directly in the negative direction of the first direction F1, thus forming the fourth rope segment 1102.

[0115] Furthermore, please refer to Figure 3 and combined Figure 2 , Figures 4 to 7The transmission assembly also includes a fifth guide wheel 19, a sixth guide wheel 20, a seventh guide wheel 21, and an eighth guide wheel 22 rotatably connected to the first bracket 1. The fifth guide wheel 19 and the sixth guide wheel 20 are located between the first guide wheel 15 and the fourth guide wheel 18. The seventh guide wheel 21 and the eighth guide wheel 22 are located between the second guide wheel 16 and the third guide wheel 17. The first guide wheel 15, the second guide wheel 16, the third guide wheel 17, the fourth guide wheel 18, the fifth guide wheel 19, the sixth guide wheel 20, the seventh guide wheel 21, and the eighth guide wheel 22 are symmetrical about a first plane, which is a plane parallel to the first direction F1 and perpendicular to the rotating shaft 2. One end of the first rope 10 exits from the first rotating wheel 6 and successively passes over the fifth guide wheel 19 and the first guide wheel 15; the other end of the first rope segment 1001 exits from the first rotating wheel 6 and successively passes over the sixth guide wheel 20 and the fourth guide wheel 18. One end of the second rope 11 comes out of the second rotating wheel 7 and passes through the seventh guide wheel 21 and the second guide wheel 16 in sequence. The other end of the second rope 11 comes out of the second rotating wheel 7 and passes through the eighth guide wheel 22 and the third guide wheel 17 in sequence.

[0116] The above-described configuration of the positions of the guide wheels and the direction of the corresponding ropes helps to improve the synchronization of the release and retraction of the first rope 10 and the second rope 11, and prevents the rope tension from being too high.

[0117] Please refer to Figure 8 In another embodiment, a more optimized approach is adopted to further improve the synchronization of the winding and unwinding of the first rope 10 and the second rope 11: the fifth guide wheel 19 and the sixth guide wheel 20 are arranged at a small distance apart along the extension direction of the rotating shaft 2, and correspondingly, the seventh guide wheel 21 and the eighth guide wheel 22 are arranged at a small distance apart along the extension direction of the rotating shaft 2. This results in the first rope 10 between the first rotating wheel 6 and the fifth guide wheel 19 extending along the first direction F1, the first rope 10 between the first rotating wheel 6 and the sixth guide wheel 20 extending along the first direction F1, the second rope 11 between the second rotating wheel 7 and the seventh guide wheel 21 extending along the first direction F1, and the first rope 10 between the second rotating wheel 7 and the eighth guide wheel extending along the first direction F1.

[0118] In this embodiment, the reciprocating rod 5 is a lead screw extending along the first direction F1, and the driving device 4 is a motor. The operation of the motor drives the lead screw to reciprocate along the first direction F1, thereby pulling the photovoltaic panels 3 to rotate via ropes to adjust the angle of sunlight. Specifically, the lead screw seat 14 is fixed to the first bracket 1. Figure 3The lead screw nut, which is not shown due to obstruction, is rotatably connected to the lead screw seat 14, and the lead screw nut is threaded to the lead screw. The motor of the drive device 4 is fixed to the lead screw seat 14 and connected to the aforementioned lead screw nut to drive the lead screw nut to rotate, thereby causing the lead screw to move along the first direction F1. Both the lead screw seat 14 and the lead screw nut are components of the transmission assembly.

[0119] Please refer to point 3 again. Figure 7 In this embodiment, the transmission assembly further includes a plurality of ninth guide wheels 23 and a plurality of tenth guide wheels 24. The plurality of ninth guide wheels 23 are arranged in a third row along the first direction F1, and each of the ninth guide wheels 23 corresponds one-to-one with a plurality of third rotating wheels 8. The plurality of tenth guide wheels 24 are arranged in a fourth row along the first direction F1, and each of the tenth guide wheels 24 corresponds one-to-one with a plurality of fourth rotating wheels 9. The third row is parallel to the first row and the two rows define a third plane. The fourth row is parallel to the second row and the two rows define a fourth plane. Both the third and fourth planes are perpendicular to the rotating shaft 2.

[0120] One end of each of the two third ropes 12 corresponding to each third wheel 8 passes around the corresponding ninth guide wheel 23 in opposite directions, and then wraps around and fixes itself to the third wheel 8 in opposite directions. Similarly, one end of each of the two fourth ropes 13 corresponding to each fourth wheel 9 passes around the corresponding tenth guide wheel 24 in opposite directions, and then wraps around and fixes itself to the corresponding fourth wheel 9 in opposite directions. Furthermore, the two third ropes 12 corresponding to each third wheel 8 are arranged in an X-shape between the third wheel 8 and the corresponding ninth guide wheel 23, and the two fourth ropes 13 corresponding to each fourth wheel 9 are arranged in an X-shape between the fourth wheel 9 and the corresponding tenth guide wheel 24.

[0121] The "opposite directions" mentioned above refer to two directions, one of which is clockwise and the other is counterclockwise. Please refer to point 3 and combine it with... Figure 4 and Figure 5 ,for Figure 3 Each third wheel 8 has two corresponding third ropes 12. The right end of the first third rope 12 passes around a ninth guide wheel 23 in a counterclockwise direction, and the left end of the second third rope 12 passes around the ninth guide wheel 23 in a clockwise direction. After the right end of the first third rope 12 passes around the ninth guide wheel 23, it then wraps around and is fixed to the third wheel 8 in a clockwise direction. The left end of the second third rope 12 passes around the ninth guide wheel 23, then wraps around and is fixed to the third wheel 8 in a counterclockwise direction.

[0122] In this embodiment, each ninth guide wheel 23 and tenth guide wheel 24 guides the direction of two rope segments respectively, and the radial forces exerted by these two rope segments on the guide wheels are opposite and have a canceling effect, thereby improving the rotational smoothness of the ninth guide wheel 23 and tenth guide wheel 24. The two rope segments located between the rotating wheel and the guide wheel are arranged in an X-shape, making the aforementioned canceling effect more obvious, thereby further improving the rotational smoothness of the guide wheels.

[0123] In this embodiment, the two third ropes 12 corresponding to each third reel 8 are two independent ropes that are not directly connected. As mentioned above, one end of each of the two third ropes 12 corresponding to each third reel 8 is fixed to the third reel 8. Therefore, the two third ropes 12 corresponding to each third reel 8 are indirectly fixedly connected by means of the third reel 8. It should be noted that the two third ropes 12 corresponding to each third reel 8 can also be directly connected without the aid of the third reel 8 to form a long rope, and then the non-end portion of the long rope can be locked to the third reel 8 by fasteners. In this way, it is equivalent to the two third ropes 12 being wrapped around and fixed to the corresponding third reel 8 in opposite directions. The scope of protection of claim 1 of this application does not exclude this situation. This is described in detail in the following embodiment two.

[0124] Similarly, the two fourth ropes 13 corresponding to each fourth wheel 9 can also adopt a similar structure as described above.

[0125] As mentioned above, the "wrapping" of the third rope 12 and the fourth rope 13 around the third reel 8 and the fourth reel 9 can be either a full circle or a partial circle. However, if each of the third ropes 12 and the fourth rope 13 wraps around the corresponding third reel 8 and fourth reel 9 in a full circle (greater than 360°), the following drawback will exist:

[0126] Under the power of the drive device 4, the rope may pull the third wheel 8 and the fourth wheel 9 to rotate a full circle or even several times, thereby causing the photovoltaic panel 3 to rotate a full circle. To ensure that the photovoltaic panel 3 can rotate a full circle, the length of the photovoltaic panel 3 must be less than the length of the rotating shaft 2; otherwise (i.e., the length of the photovoltaic panel 3 is greater than the length of the rotating shaft 2), the photovoltaic panel 3 will inevitably be blocked and collided with by the first support 1, resulting in structural damage. However, reducing the length of the photovoltaic panel 3 not only reduces the power generation of the photovoltaic system but also increases the overall cost of the photovoltaic system.

[0127] For the reasons mentioned above, in order to limit the rotatable range of the photovoltaic panel 3 to an angle that will not collide with or block the first support 1, this embodiment is designed as follows: the sum of the circumference angles of the two third ropes 12 corresponding to each third wheel 8 on the third wheel 8 is less than 360 degrees, and the sum of the circumference angles of the two fourth ropes 13 corresponding to each fourth wheel 9 on the fourth wheel 9 is less than 360 degrees.

[0128] When one of the third ropes 12 pulls the corresponding third reel 8 to rotate, the rope segment is unwound from the third reel 8, and its wrapping angle (or winding angle) on the third reel 8 gradually decreases. After the third rope 12 is unwound to the point where its end is sturdy and the direction of the tension on the third reel 8 passes through the axis of rotation of the third reel 8, the tension of the third rope 12 on the third reel 8 will not generate a rotational torque. No matter how much tension the third rope 12 applies to the third reel 8 at this point, the third reel 8 will no longer continue to rotate due to this tension, and the unwinding angle of the third reel 8 is approximately its original wrapping angle. Similarly, the unwinding angle of the other third rope 12 adjacent to the aforementioned third rope 12 also has the same characteristics. Therefore, if the sum of the circumference angles of the two third ropes 12 corresponding to each third wheel 8 on the third wheel 8 is less than 360 degrees, and the sum of the circumference angles of the two fourth ropes 13 corresponding to each fourth wheel 9 on the fourth wheel 9 is less than 360 degrees, then it can be guaranteed that the rotation angle of each third wheel 8 and each fourth wheel 9 is generally less than 360 degrees, and the rotation angle of the photovoltaic panel 3 is less than 360 degrees.

[0129] Rotation of shaft 2 only allows for angle adjustment of photovoltaic panel 3 in one direction, and cannot simultaneously track the longitude and latitude of sunlight. Therefore, in another embodiment, the photovoltaic system is further equipped with a second support. First support 1 is connected to the top of the second support in a manner that allows it to rotate around a first axis, and the weight of first support 1 is supported by the second support. The first axis is perpendicular to shaft 2. This allows each photovoltaic panel 3 to rotate around two mutually perpendicular axes of rotation, thereby enabling real-time vertical tracking of sunlight by the photovoltaic panel 3. The rotation of first support 1 on the second support is driven by another motor.

[0130] In this embodiment, the first rope 10, the second rope 11, the third rope 12 and the fourth rope 13 are all steel wire ropes.

[0131] It should be noted that the first rope segment 1001, the second rope segment 1002, the third rope segment 1101, and the fourth rope segment 1102 described above can also be replaced with guide rods that are not easily bent or deformed, such as metal rods. For example, in another embodiment, the two ends of the first rope 10 are respectively led out from both sides of the first rotating wheel 6 and connected to the first pull rod and the second pull rod extending along the first direction F1, respectively. The two ends of the second rope 11 are respectively led out from both sides of the second rotating wheel and connected to the third pull rod and the fourth pull rod extending along the first direction F1, respectively. The positions and functions of the first pull rod, the second pull rod, the third pull rod, and the fourth pull rod are the same as those of the first rope segment 1001, the second rope segment 1002, the third rope segment 1101, and the fourth rope segment 1102 described above, and can be understood by referring to the above description, which will not be repeated here.

[0132] It is understandable that by replacing the relatively soft first rope segment 1001, second rope segment 1002, third rope segment 1101 and fourth rope segment 1102 with guide rods that are not easy to bend and deform, it is possible to ensure that the "other end" of each third rope 12 and fourth rope 13 has a very stable relative position on the corresponding guide rod, which is more conducive to improving the rotation synchronization of each photovoltaic panel 3.

[0133] <Example 2>

[0134] Figures 9 to 15 A partial structure of the photovoltaic system in Embodiment 2 of this application is shown. This photovoltaic system has a structure that is basically the same as that of the photovoltaic system in Embodiment 1, and can be understood with reference to the description of Embodiment 1. The following focuses on describing the differences between this embodiment and Embodiment 1.

[0135] Please refer to Figure 11 In this embodiment, the lead screw includes a first rod segment 501, a first elastic element 508, a second rod segment 502, a third rod segment 503, a fourth rod segment 504, a fifth rod segment 505, a sixth rod segment 506, a second elastic element 509, and a seventh rod segment 507 connected sequentially along a first direction F1. The two ends of the third rod segment 503 are threadedly connected to the second rod segment 502 and the fourth rod segment 504, respectively. Rotating the third rod segment 503 adjusts the distance between the second rod segment 502 and the fourth rod segment 504, thereby adjusting the tension of the third rope segment 1101. The two ends of the fifth rod segment 505 are threadedly connected to the fourth rod segment 504 and the sixth rod segment 506, respectively. Rotating the fifth rod segment 505 adjusts the distance between the fourth rod segment 504 and the sixth rod segment 506, thereby adjusting the tension of the fourth rope segment 1102. The lead screw nut is specifically threadedly connected to the fourth rod segment 504 of the lead screw. In this embodiment, both the first elastic element 508 and the second elastic element 509 are springs extending along the first direction F1.

[0136] It is understandable that the screw adopts the above structure to ensure that both the first rope 10 and the second rope 11 have a sufficiently large release capacity during operation, preventing excessive tensile stress on the first rope 10 and the second rope 11 during operation.

[0137] In addition, please refer to Figures 12 to 15 In this embodiment, the two third ropes 12 corresponding to each third wheel 8 are integrally connected to form a long rope. This long rope is virtually divided into two third ropes 12 (or rope segments) by the third wheel 8. The non-end positions of this long rope are fixed to the third wheel 8. Specifically, a slot 801 is provided on the third wheel 8, and a locking block 25 is provided at the middle position of the two integrally connected third ropes 12 (i.e., the aforementioned long rope). The locking block 25 is embedded in the slot 801, thereby achieving a fixed connection between the two third ropes 12 and the third wheel 8. Preferably, a screw can also be provided to lock the locking block 25 to the third wheel 8. The two fourth ropes 13 corresponding to each fourth wheel 9 also adopt a similar design, which will not be described in detail here.

[0138] Please refer to Figure 13 and Figure 14 In this embodiment, the two third ropes 12 corresponding to each third wheel 8 are fixed to the first rope segment 1001 and the third rope segment 1101 as follows: For ease of description, the two third ropes 12 corresponding to each third wheel 8 are referred to as the first third rope 12 and the second third rope 12, respectively. The first third rope 12 is fixed to the first rope segment 1001 through the first connector 26, and the second third rope 12 is fixed to the third rope segment 1101 through the second connector 27. The first connector 26 includes a first body 2601 fixed to the first rope segment 1001 and a second body 2602 fixed to the first third rope 12. The first body 2601 includes a first through hole 2601a extending along the first direction F1, and the second body 2602 includes a first screw 2602a extending in the positive direction along the first direction F1. The first screw 2602a movably passes through the first through hole 2601a and is threadedly connected to the first nut 2603. The second connector 27 includes a third body 2701 fixed to the third rope segment 1101 and a fourth body 2702 fixed to the second and third ropes 12. The third body 2701 includes a second through hole extending along the first direction F1. The fourth body 2702 includes a second screw 2702a extending in the negative direction of the first direction F1. The second screw 2702a movably passes through the second through hole and is threadedly connected to the second nut 2703.

[0139] It is understood that, in application, the position of the end of the third rope 12 on the first rope segment 1001 and the third rope segment 1101 can be adjusted by rotating the first nut 2603 and the second nut 2703, thereby adjusting the tension of the third rope 12.

[0140] Furthermore, please refer to Figure 14 and Figure 15 The first body 2601 includes a third through hole 2601b that is fitted over and welded to the first rope segment 1001, and a first chamber 2601c for accommodating the second body 2602. The second body 2602 includes a first slot 2602b and a first guide hole 2602c. One end of the first and third ropes 12 is provided with a first locking head 1201 that is detachably engaged in the first slot 2602b. The first rope segment 1001 passes through the first guide hole 2602c, and the second body 2602 can slide along the length of the first rope segment 1001. The third body 2701 includes a fourth through hole that is fitted over and welded to the third rope segment 1101, and a second chamber 2701c for accommodating the fourth body 2702. The fourth body 2702 includes a second slot 2702b and a second guide hole 2702c. One end of the second and third ropes 12 is provided with a second locking head 1202 that is detachably locked in the second slot 2702b. The third rope segment 1101 passes through the second guide hole 2702c, and the fourth body 2702 can slide along the length direction of the second rope segment 1101.

[0141] After assembly, the second body 2602 is located in the first chamber 2601c. The function of the first chamber 2601c is to prevent the first locking head 1201 from disengaging from the first locking slot 2602b. The fourth body 2702 is located in the second chamber 2701c. The function of the second chamber 2701c is to prevent the second locking head 1202 from disengaging from the second locking slot 2702b.

[0142] The two fourth ropes 13 corresponding to each fourth reel 9 are fixed to the second rope segment 1002 and the fourth rope segment 1102 in a similar structure, which will not be described in detail here.

[0143] The above are merely exemplary embodiments of this application and are not intended to limit the scope of protection of this application, which is determined by the appended claims.

Claims

1. A photovoltaic system, characterized in that, include: First support; Multiple rotating shafts are arranged parallel to each other along a first direction, and each of the rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis. Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to a plurality of rotating shafts in a one-to-one correspondence. as well as A driving device, which is connected to the plurality of said rotating shafts via a transmission assembly, so as to drive each of said rotating shafts to rotate around its respective axis; The transmission assembly includes: A reciprocating tie rod, which can reciprocate along the first direction under the drive of the driving device; A first and a second wheel are rotatably connected to the reciprocating tie rod; Multiple third rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple third rotating wheels are arranged in a first row at intervals along the first direction; Multiple fourth rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple fourth rotating wheels are arranged in a second row at intervals along the first direction, wherein the second row is parallel to the first row; Multiple ninth guide wheels and multiple tenth guide wheels, wherein each of the multiple ninth guide wheels corresponds one-to-one with each of the multiple third rotating wheels, and each of the multiple tenth guide wheels corresponds one-to-one with each of the multiple fourth rotating wheels; A first rope is wound around the first reel. The first rope includes a first rope segment and a second rope segment that extend forward along the first direction after being drawn out from both sides of the first reel. The second rope is wound around the second reel. The second rope includes a third rope segment and a fourth rope segment that are respectively led out from both sides of the second reel and extend in the negative direction of the first direction. The first rope segment and the third rope segment correspond to the first row, and the second rope segment and the fourth rope segment correspond to the second row. Multiple third ropes, each of the third pulleys corresponding to two third ropes, with one end of each of the two third ropes corresponding to each third pulley wrapped around and fixed to the third pulley in opposite directions, and the other ends of each of the two third ropes corresponding to each third pulley passing around the corresponding ninth guide pulley in opposite directions before being fixed to the first rope segment and the third rope segment respectively; and Multiple fourth ropes are provided, with each fourth wheel corresponding to two fourth ropes. One end of each of the two fourth ropes corresponding to each fourth wheel is wrapped around and fixed to the fourth wheel in opposite directions. The other ends of each of the two fourth ropes corresponding to each fourth wheel are wrapped around the corresponding tenth guide wheel in opposite directions and then fixed to the second rope segment and the fourth rope segment, respectively.

2. The photovoltaic system according to claim 1, characterized in that, The transmission assembly includes a first guide wheel, a second guide wheel, a third guide wheel, and a fourth guide wheel that are rotatably connected to the first bracket and are arranged in a rectangular pattern. The first guide wheel and the second guide wheel are respectively disposed on opposite sides of the plurality of third rotating wheels along the first direction, and the third guide wheel and the fourth guide wheel are respectively disposed on opposite sides of the plurality of fourth rotating wheels along the first direction. The first guide wheel, the second guide wheel, the third guide wheel, and the fourth guide wheel are arranged sequentially along the circumferential direction. One end of the first rope extends directly in the positive direction of the first direction after passing through the first spool and then around the first guide wheel, thus forming the first rope segment; the other end of the first rope extends directly in the positive direction of the first direction after passing through the first spool and then around the fourth guide wheel, thus forming the second rope segment; one end of the second rope extends directly in the negative direction of the first direction after passing through the second spool and then around the second guide wheel, thus forming the third rope segment; the other end of the second rope extends directly in the negative direction of the first direction after passing through the second spool and then around the third guide wheel, thus forming the fourth rope segment.

3. The photovoltaic system according to claim 2, characterized in that, The transmission assembly includes: A fifth guide wheel and a sixth guide wheel, rotatably connected to the first bracket and located between the first guide wheel and the fourth guide wheel, and A seventh guide wheel and an eighth guide wheel are rotatably connected to the first bracket and located between the second guide wheel and the third guide wheel; One end of the first rope is wound around the first rotating wheel and then passes around the fifth guide wheel and the first guide wheel in sequence. The other end of the first rope segment is wound around the first rotating wheel and then passes around the sixth guide wheel and the fourth guide wheel in sequence. The first rope between the first rotating wheel and the fifth guide wheel extends along the first direction. One end of the second rope exits from the second reel and passes through the seventh guide wheel and the second guide wheel in sequence. The other end of the second rope exits from the second reel and passes through the eighth guide wheel and the third guide wheel in sequence. The second rope between the second reel and the seventh guide wheel extends along the first direction, and the first rope between the second reel and the eighth guide wheel extends along the first direction.

4. The photovoltaic system according to claim 1, characterized in that, The reciprocating tie rod is a lead screw extending along the first direction. The transmission assembly also includes a lead screw seat fixed to the first bracket and a lead screw nut rotatably connected to the lead screw seat and threadedly connected to the lead screw. The driving device is a motor fixed to the lead screw seat and driving the lead screw nut to rotate.

5. The photovoltaic system according to claim 4, characterized in that, The lead screw includes a first rod segment, a first elastic element, a second rod segment, a third rod segment, a fourth rod segment, a fifth rod segment, a sixth rod segment, a second elastic element, and a seventh rod segment connected sequentially along the first direction. The two ends of the third rod segment are threadedly connected to the second rod segment and the fourth rod segment, respectively, thereby adjusting the distance between the second and fourth rod segments by rotating the third rod segment. The two ends of the fifth rod segment are threadedly connected to the fourth and sixth rod segments, respectively, thereby adjusting the distance between the fourth and sixth rod segments by rotating the fifth rod segment. The lead screw nut is specifically threadedly connected to the fourth rod segment.

6. The photovoltaic system according to claim 1, characterized in that, At least one of the third reels corresponds to two third ropes that are integrally connected, and the non-end positions of the two integrally connected first ropes are fixed on the first reel corresponding to the two first ropes; at least one of the fourth reels corresponds to two fourth ropes that are integrally connected, and the non-end positions of the two integrally connected fourth ropes are fixed on the second reel corresponding to the two fourth ropes.

7. The photovoltaic system according to claim 1, characterized in that, The plurality of ninth guide wheels are arranged in a third row along the first direction, and the plurality of tenth guide wheels are arranged in a fourth row along the first direction. The third row is parallel to the first row and the two define a third plane. The fourth row is parallel to the second row and the two define a fourth plane. Both the third plane and the fourth plane are perpendicular to the axis of rotation. The two third ropes corresponding to each third wheel are arranged in an X-shape between the third wheel and the corresponding ninth guide wheel, and the two fourth ropes corresponding to each fourth wheel are arranged in an X-shape between the fourth wheel and the corresponding tenth guide wheel.

8. The photovoltaic system according to claim 1, characterized in that, The sum of the angles of the two third ropes corresponding to each third reel on the third reel is less than 360 degrees, and the sum of the angles of the two fourth ropes corresponding to each fourth reel on the fourth reel is less than 360 degrees.

9. A photovoltaic system, characterized in that, include: First support; Multiple rotating shafts are arranged parallel to each other along a first direction, and each of the rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis. Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to a plurality of rotating shafts in a one-to-one correspondence. as well as A driving device, which is connected to the plurality of said rotating shafts via a transmission assembly, so as to drive each of said rotating shafts to rotate around its respective axis; The transmission assembly includes: A reciprocating tie rod, which can reciprocate along the first direction under the drive of the driving device; A first and a second wheel are rotatably connected to the reciprocating tie rod; Multiple third rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple third rotating wheels are arranged in a first row at intervals along the first direction; Multiple fourth rotating wheels are coaxially fixed to multiple rotating shafts in a one-to-one correspondence, and the multiple fourth rotating wheels are arranged in a second row at intervals along the first direction, wherein the second row is parallel to the first row; Multiple ninth guide wheels and multiple tenth guide wheels, wherein each of the multiple ninth guide wheels corresponds one-to-one with each of the multiple third rotating wheels, and each of the multiple tenth guide wheels corresponds one-to-one with each of the multiple fourth rotating wheels; A first rope is wound around the first rotating wheel. The two ends of the first rope are respectively led out from both sides of the first rotating wheel and respectively connected to a first pull rod and a second pull rod extending along the first direction. The second rope is wound around the second reel. The two ends of the second rope are respectively led out from both sides of the second reel and connected to the third and fourth pull rods extending along the first direction. The first and third pull rods correspond to the first row, and the second and fourth pull rods correspond to the second row. Multiple third ropes, each of the third pulleys corresponding to two third ropes, with one end of each of the two third ropes around and fixed to the third pulley in opposite directions, and the other ends of each of the two third ropes around the corresponding ninth guide pulley in opposite directions, before being fixed to the first pull rod and the third pull rod respectively; and Multiple fourth ropes are provided, with each fourth wheel corresponding to two fourth ropes. One end of each of the two fourth ropes corresponding to each fourth wheel is wrapped around and fixed to the fourth wheel in opposite directions. The other ends of each of the two fourth ropes corresponding to each fourth wheel are wrapped around the corresponding tenth guide wheel in opposite directions and then fixed to the second pull rod and the fourth pull rod, respectively.

10. The photovoltaic system according to claim 9, characterized in that, The reciprocating tie rod is a lead screw extending along the first direction. The transmission assembly also includes a lead screw seat fixed to the first bracket and a lead screw nut rotatably connected to the lead screw seat and threadedly connected to the lead screw. The driving device is a motor fixed to the lead screw seat and driving the lead screw nut to rotate.

11. The photovoltaic system according to claim 9, characterized in that, The plurality of the ninth guide wheels are arranged in a third row along the first direction, and the plurality of the tenth guide wheels are arranged in a fourth row along the first direction; The third row is parallel to the first row and the two define a third plane; the fourth row is parallel to the second row and the two define a fourth plane; both the third plane and the fourth plane are perpendicular to the axis of rotation. The two third ropes corresponding to each of the third rotating wheels are arranged in an X-shape between the third rotating wheel and the corresponding ninth guide wheel, and the two fourth ropes corresponding to each of the fourth rotating wheels are arranged in an X-shape between the fourth rotating wheel and the corresponding tenth guide wheel.

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