Guiding mechanism of solar photovoltaic panels in rooftop photovoltaic modules

Abstract

The present application discloses a guiding mechanism for solar photovoltaic panels in a rooftop photovoltaic assembly, comprising a longitudinal beam, a lifting device, a bidirectional movable device, a fixed photovoltaic panel, a mobile photovoltaic panel, and a shielding device, wherein the two longitudinal beams are tilted and arranged side by side by the lifting device; the fixed photovoltaic panel is arranged between the two longitudinal beams; the two mobile photovoltaic panels are movably arranged along the length of the longitudinal beams and are respectively connected to the two opposite moving ends of the bidirectional movable device to expand or retract the two mobile photovoltaic panels; the shielding device is rotatably arranged between the two longitudinal beams, and the pivot end of the shielding device is linked to the mobile photovoltaic panel at an inclined high position, so that when the two mobile photovoltaic panels are expanded, the shielding device moves to the bottom of the fixed photovoltaic panel; when the two mobile photovoltaic panels are retracted, the shielding device moves to the top of the fixed photovoltaic panel. The present application can protect the photovoltaic panel, and has a simple structure and does not take up space, so it can be applied to rooftop photovoltaic assemblies.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a guiding mechanism for solar photovoltaic panels in a rooftop photovoltaic assembly. Background Art

[0002] With the rapid development of photovoltaic power generation technology, rooftop photovoltaic systems have been widely used due to their advantages such as high space utilization, energy saving and environmental protection.

[0003] In the related art, the ability of rooftop photovoltaic modules to resist severe weather is weak. Although there is a protection method by flipping the photovoltaic panels in the existing design, that is, when encountering severe weather such as heavy rain and hail, the photovoltaic panels can be flipped to expose the back panel, but under this method, especially in weather conditions with strong impact such as hail, even if the back panel is exposed, some parts will still be damaged.

[0004] Another example is the design of storing multiple photovoltaic panels through telescopic means such as scissor arms to cope with severe weather. However, this usually requires a larger shielding box and a more complex control system to protect the multiple photovoltaic panels after they are erected, so it is not suitable for rooftop use scenarios.

[0005] Another example is the design of protecting photovoltaic panels by pulling a retracted curtain. However, this method usually needs to be consistent with the overall horizontal or vertical length of the photovoltaic panel, which cannot reduce the affected area of ​​the photovoltaic panel. Moreover, the curtain has poor protection effect in the face of weather conditions with strong impact such as hail. Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0007] To achieve the above-mentioned purpose, the first aspect of the present application proposes a guiding mechanism for solar photovoltaic panels in a rooftop photovoltaic assembly, comprising: a longitudinal beam, a lifting device, a bidirectional moving device, a fixed photovoltaic panel, a movable photovoltaic panel and a shielding device, wherein the two longitudinal beams are tilted and arranged side by side through a height-adjustable lifting device; the fixed photovoltaic panel is arranged between the two longitudinal beams; the two movable photovoltaic panels are movably arranged along the length of the longitudinal beams, and are respectively connected to the two reverse moving ends of the bidirectional moving device to expand or contract the two movable photovoltaic panels; the shielding device is rotatably arranged between the two longitudinal beams, and the pivot end of the shielding device is linked to the movable photovoltaic panel at an inclined high position, so that when the two movable photovoltaic panels are expanded, the shielding device moves to the bottom of the fixed photovoltaic panel; when the two movable photovoltaic panels are contracted, the shielding device moves to the top of the fixed photovoltaic panel.

[0008] In addition, the guiding mechanism of the solar photovoltaic panel in the rooftop photovoltaic assembly proposed in the present application may also have the following additional technical features:

[0009] As a further description of the above technical solution: the longitudinal beam is a hollow cavity, and the connection between the two longitudinal beams is provided with a cross beam for reinforcement.

[0010] As a further description of the above technical solution: the bidirectional moving device includes a drive unit, a transmission structure, a fixed sleeve and a roller, wherein the transmission structure is arranged in the longitudinal beam, and the driving end of the transmission structure is connected to the output end of the drive unit; the two fixed sleeves are respectively arranged on the two reverse moving ends of the transmission structure; the inner wall of the longitudinal beam is provided with two staggered parallel sliding grooves along the two reverse moving ends of the transmission structure; wherein the two fixed sleeves are respectively connected to the two movable photovoltaic panels through rollers, and the rollers are embedded in the corresponding sliding grooves.

[0011] As a further description of the above technical solution: the transmission structure includes two sprockets arranged in the longitudinal beam and a chain connecting the two sprockets, one of the sprockets is connected to the driving unit, and the two fixed sleeves are respectively fixed on the upper and lower sides of the chain.

[0012] As a further description of the above technical solution: the shielding device includes an active rod, a driven rod, a gear and a baffle, wherein the two parallel active rods and the driven rods can be respectively arranged on the longitudinal beam for damped rotation; the gear is coaxially arranged with the active rod; the two sides of the baffle are respectively pivotally connected to the ends of the active rod and the driven rod; wherein, the bottom of the movable photovoltaic panel at an inclined high position is provided with a first rack and a second rack at intervals, and the first rack and the second rack follow the movable photovoltaic panel and intermittently mesh with the gear in sequence.

[0013] As a further description of the above technical solution: guide plates with inward openings are provided on the sides of the first rack and the second rack.

[0014] As a further description of the above technical solution: an arc structure is provided on the active rod, so that when the two movable photovoltaic panels are retracted and stacked, the active rod rotates to the top of the fixed photovoltaic panel, and the roller on the movable photovoltaic panel at an inclined high position is located in the concave side of the arc structure.

[0015] As a further description of the above technical solution: the bottom of the fixed photovoltaic panel is arranged between the two longitudinal beams through a fixed frame, and a gap is left between both sides of the fixed photovoltaic panel and the movable photovoltaic panel and the two longitudinal beams, and the pivot end of the shielding device is located in the gap to avoid interference with the movement of the shielding device.

[0016] As a further description of the above technical solution: one end of each longitudinal beam is hinged through a base, and the other end is hinged to the corresponding jacking device, and the driving ends of the jacking devices on the two longitudinal beams are coaxially connected through a connecting rod.

[0017] As a further description of the above technical solution: the jacking device includes a first column, a second column, a screw structure and an engaging gear set, wherein the second column is sleeved and slidably arranged in the first column; the rotating end of the screw structure is arranged in the first column, and the lifting end of the screw structure is connected to the second column; the rotating end of the screw structure is connected to the output end of the power unit through the engaging gear set.

[0018] According to the guiding mechanism of the solar photovoltaic panel in the rooftop photovoltaic assembly of the present application, in response to severe weather conditions, the two mobile photovoltaic panels can be driven to approach the fixed photovoltaic panel and stacked through the bidirectional moving device, and when the mobile photovoltaic panel moves, the shielding device can be linked to move the shielding device above the fixed photovoltaic panel to protect the photovoltaic panel; after the severe weather is over, the two mobile photovoltaic panels are driven to unfold by the bidirectional moving device, and the shielding device can be linked to move below the fixed photovoltaic panel, which not only can effectively protect the photovoltaic panel, but also has a simple structure and does not take up space, so it can be used in rooftop photovoltaic assemblies.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a structural schematic diagram of a guide mechanism for a solar photovoltaic panel in a rooftop photovoltaic assembly according to one embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the structure for installing fixed photovoltaic panels and mobile light panels according to one embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the connection structure between the shielding device and the longitudinal beam according to one embodiment of the present application;

[0024] Figure 4 is a schematic diagram of an exploded structure of a bidirectional moving device and a longitudinal beam according to one embodiment of the present application;

[0025] Figure 5This is a schematic diagram of the connection structure between the mobile photovoltaic panel and the shielding device according to one embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the internal structure of a guide mechanism for a solar photovoltaic panel in a rooftop photovoltaic assembly according to one embodiment of the present application;

[0027] FIG7( a ) is a schematic diagram of a magnified structure of a local area A according to an embodiment of the present application;

[0028] FIG7( b ) is a schematic diagram of an enlarged structure of a local area A according to another embodiment of the present application;

[0029] FIG7( c ) is a schematic diagram of a magnified structure of a local area A according to another embodiment of the present application;

[0030] FIG7( d ) is a schematic diagram of a magnified structure of a local area A according to another embodiment of the present application;

[0031] FIG7( e ) is a schematic diagram of a magnified structure of a local area A according to another embodiment of the present application;

[0032] Figure 8 This is a schematic diagram of the use state of the guide mechanism of the solar photovoltaic panel in the rooftop photovoltaic assembly according to one embodiment of the present application;

[0033] Figure 9 It is a schematic diagram of the internal structure of a jacking device according to an embodiment of the present application.

[0034] As shown in the figure:

[0035] 100, longitudinal beam; 101, slide; 102, cross beam; 103, gap; 200, lifting device; 201, base; 202, connecting rod; 210, first column; 220, second column; 230, screw structure; 240, meshing gear set; 300, two-way moving device; 310, drive unit; 320, transmission structure; 330, fixing sleeve; 340, roller; 400, fixed photovoltaic panel; 401, fixing frame; 500, mobile photovoltaic panel; 501, first rack; 502, second rack; 600, shielding device; 610, active rod; 620, driven rod; 630, gear; 640, baffle; 611, arc structure. DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] The following describes the guiding mechanism of the solar photovoltaic panel in the rooftop photovoltaic assembly of the embodiment of the present application with reference to the accompanying drawings.

[0038] like Figures 1 to 4 As shown, the guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly of the embodiment of the present application may include a longitudinal beam 100, a lifting device 200, a bidirectional moving device 300, a fixed photovoltaic panel 400, a movable photovoltaic panel 500 and a shielding device 600.

[0039] Among them, the two longitudinal beams 100 are tilted and arranged side by side through a height-adjustable jacking device 200. The longitudinal beams 100 are hollow cavities. A cross beam 102 for reinforcement is connected between the two longitudinal beams 100. The fixed photovoltaic panel 400 is arranged between the two longitudinal beams 100. The two movable photovoltaic panels 500 are movably arranged along the length of the longitudinal beams 100 and are respectively connected to the two reverse moving ends of the bidirectional moving device 300 to expand or shrink the two movable photovoltaic panels 500.

[0040] In one embodiment of the present application, Figure 4 As shown, the bidirectional moving device 300 includes a driving unit 310 , a transmission structure 320 , a fixing sleeve 330 and a roller 340 .

[0041] Among them, the transmission structure 320 is arranged in the longitudinal beam 100, and the driving end of the transmission structure 320 is connected to the output end of the driving unit 310 (for example, a driving motor), and the two fixing sleeves 330 are respectively arranged on the two reverse moving ends of the transmission structure 320. The inner wall of the longitudinal beam 100 is provided with two staggered parallel sliding grooves 101 along the two reverse moving ends of the transmission structure 320.

[0042] Among them, the two fixed sleeves 330 are respectively connected to the two mobile photovoltaic panels 500 through rollers 340, and the rollers 340 are embedded in the corresponding slide grooves 101, ensuring that the mobile photovoltaic panels 500 can move smoothly along the predetermined path during the expansion or contraction process, avoiding the occurrence of offset or jamming.

[0043] It should be noted that in order to reduce the hidden dangers of starting the drive unit 310 (such as the need to climb to the roof to connect the power supply), the control switch of the drive unit 310 can be set at a height below the roof that is convenient for relevant staff to operate.

[0044] To clearly illustrate the previous embodiment, in another embodiment of the present application, the transmission structure 320 includes two sprockets arranged in the longitudinal beam 100 and a chain connecting the two sprockets (the figure is only a schematic diagram), one of the sprockets is connected to the drive unit 310, and two fixing sleeves 330 are respectively fixed on the upper and lower sides of the chain.

[0045] It should be noted that the sprockets and chains in the transmission structure 320 can have a greater load-bearing capacity to meet the movement requirements of the large-sized mobile photovoltaic panels 500 in outdoor environments.

[0046] Specifically, when encountering severe weather such as hail, the relevant staff only needs to start the drive unit 310 through the control switch extending to the bottom of the roof. The drive unit 310 then drives the sprocket connected to it to move the chain. At the same time, the fixed sleeve 330 guides and pushes the mobile photovoltaic panel 500 to move along the preset track (i.e., the slide 101) with the help of the roller 340 rolling in the slide 101, so that the two mobile photovoltaic panels 500 approach each other to the fixed photovoltaic panel 400, and finally the two mobile photovoltaic panels 500 are stacked on the upper and lower sides of the fixed photovoltaic panel 400, thereby reducing the affected area when dealing with severe weather.

[0047] As another possible situation, the transmission structure 320 is a synchronous belt structure (only a schematic diagram in the figure), that is, the two pulleys are respectively arranged in the longitudinal beam 100, and the belt body connects the two pulleys, and the two fixing sleeves 330 are respectively arranged on the upper and lower sides of the belt body.

[0048] It should be noted that the transmission structure 320 under this method has higher precision, can more accurately control the moving position of the two mobile photovoltaic panels 500, and can reduce vibration and impact when transmitting power. Since the belt body is usually made of elastic materials such as rubber or polyurethane, it has good flexibility and buffering performance, thereby improving the operating stability of the entire system and can be used for the movement of small and lightweight photovoltaic panels.

[0049] The shielding device 600 can be rotatably arranged between the two longitudinal beams 100, and the pivot end of the shielding device 600 is linked to the mobile photovoltaic panel 500 at an inclined high position, so that when the two mobile photovoltaic panels 500 are unfolded, the shielding device 600 moves to the bottom of the fixed photovoltaic panel 400; when the two mobile photovoltaic panels 500 are retracted, the shielding device 600 moves to the top of the fixed photovoltaic panel 400.

[0050] In one embodiment of the present application, Figure 5 Shown and Figure 6 As shown, the shielding device 600 includes an active rod 610 , a driven rod 620 , a gear 630 and a baffle 640 .

[0051] Among them, two parallel active rods 610 and driven rods 620 can be respectively arranged on the longitudinal beam 100 with damped rotation, the gear 630 is coaxially arranged with the active rod 610, and the two sides of the baffle 640 are respectively pivotally connected to the ends of the active rod 610 and the driven rod 620, wherein the bottom of the movable photovoltaic panel 500 at the inclined high position (i.e. the side with a higher position in the inclined state) is spaced apart with a first rack 501 and a second rack 502, and the first rack 501 and the second rack 502 follow the movable photovoltaic panel 500 and intermittently engage with the gear 630 in sequence.

[0052] It should be noted that the bottom of the fixed photovoltaic panel 400 is set between the two longitudinal beams 100 through the fixing frame 401, and a gap 103 is left between both sides of the fixed photovoltaic panel 400 and the movable photovoltaic panel 500 and the two longitudinal beams 100. The pivot end of the shielding device 600 is located in the gap 103 to avoid interference with the movement of the shielding device 600.

[0053] It should be noted that the fixing frame 401 is arranged between the two longitudinal beams using a narrow frame body and is arranged on the lower side of the pivot end of the shielding device to avoid interference with the movement of the shielding device 600.

[0054] Among them, the active rod 610 is close to the side of the inner wall of the longitudinal beam 100, and the gear 630 is coaxially arranged on the side of the active rod 610 away from the inner wall of the longitudinal beam 100. When the mobile photovoltaic panel 500 at an inclined high position drives the first rack 501 and the second rack 502 to move, it can intermittently engage with the gear 630 while ensuring that the active rod 610 rotates within the gap 103, and will not cause interference between the active rod 610 and the mobile photovoltaic panel 500.

[0055] Specifically, in severe weather such as hail, the bidirectional moving device 300 drives the two mobile photovoltaic panels 500 to move closer to each other, as shown in FIG7( a ), and the mobile photovoltaic panel 500 at the inclined high position moves along the slide 101 .

[0056] As shown in Figure 7(b), when the first rack 501 on the movable photovoltaic panel 500 contacts the gear 630, the movable first rack 501 drives the gear 630 to rotate, and the coaxial active rod 610 follows the rotation, so that under the action of the active rod 610 and the driven rod 620, the baffle 640 moves from under the fixed photovoltaic panel 400.

[0057] As shown in Figure 7(c), after the first rack 501 continues to move, the meshing relationship with the gear 630 ends. Since the active rod 610 and the driven rod 620 are both damped rotations, the baffle 640 maintains the current position and no longer moves. The active rod 610, the driven rod 620 and the baffle 640 are maintained in a position where they will not interfere with the two mobile photovoltaic panels 500 (for example, the active rod 610 and the driven rod 620 are parallel to the two mobile photovoltaic panels 500), and the two mobile photovoltaic panels 500 continue to approach each other.

[0058] As shown in FIG. 7( d ), as the two mobile photovoltaic panels 500 continue to approach each other until the second rack 502 engages with the gear 630 , the active rod 610 continues to rotate accordingly.

[0059] As shown in Figure 7(e) and Figure 8 As shown, the second rack 502 drives the gear 630 to continue rotating until the baffle 640 rotates to above the fixed photovoltaic panel 400, thereby achieving the shielding effect of the baffle 640.

[0060] To clearly illustrate the previous embodiment, in one embodiment of the present application, an arc structure 611 is provided on the active rod 610, so that when the two movable photovoltaic panels 500 are retracted and stacked, the active rod 610 rotates to the top of the fixed photovoltaic panel 400, and the roller 340 on the movable photovoltaic panel 500 at an inclined high position is located in the concave side of the arc structure 611.

[0061] It should be noted that, by providing the arc structure 611, the rotation angle of the active rod 610 can be increased, thereby making the baffle 640 closer to the photovoltaic panel to improve the shielding effect; in addition, if the arc structure 611 is not provided, when the same rotation angle needs to be achieved, due to the limitation of the position of the roller 340, the pivot end of the gear and the active rod 610 needs to be further away from the center position of the fixed plate, thereby increasing the length of the active rod 610, so that the motion trajectory of the active rod 610 is larger when it rotates.

[0062] Therefore, by shortening the length of the active rod 610 and providing an arc structure 611, the movement trajectory range of the entire shielding device 600 can be reduced. Compared with the design of directly flipping the baffle to achieve protection, the shielding device of the present application is more suitable for scenarios with narrow space in rooftop photovoltaic panels due to its smaller movement trajectory.

[0063] As a possible situation, as shown in FIG7(e), of the two rollers connected to the mobile photovoltaic panel 500 at the high end of the tilt, the one at the low end of the tilt is defined as the first roller, and the other is defined as the second roller. Then, when the first rack 501 and the second rack 502 are set, the first rack 501 is located at the low end of the first roller to avoid interference between the roller 340 on the mobile photovoltaic panel 500 at the low end of the tilt (i.e., the mobile photovoltaic panel 500 below the fixed photovoltaic panel 400) and the active rod 610 when the two mobile photovoltaic panels 500 approach each other; the tail end of the second rack 502 is located at the high end of the second roller to ensure that when the rotating rod rotates to above the fixed photovoltaic panel 400, the height of the baffle 640 is lowered to improve the protection capability.

[0064] In order to further improve the accuracy of the engagement of the first rack 501 and the second rack 502 with the gear 630 respectively, the sides of the first rack 501 and the second rack 502 are provided with guide plates with inward openings (not shown in the figure). Then, when the first rack 501 and the second rack 502 follow the moving photovoltaic panel 500 to move, they can always be ensured to be in the same straight line with the gear 630, and due to the limited movement of the roller 340 in the through slide groove 101, multiple restrictions are imposed to ensure the accuracy of the engagement.

[0065] In one embodiment of the present application, one end of each longitudinal beam 100 is hinged through a base 201, and the other end is hinged to the corresponding jacking device 200, and the driving ends of the jacking devices 200 on the two longitudinal beams 100 are coaxially connected through a connecting rod 202 to achieve synchronous operation of the two jacking devices 200.

[0066] To clearly illustrate the above embodiment, in one embodiment of the present application, Figure 9 As shown, the lifting device 200 includes a first column 210 , a second column 220 , a screw structure 230 and a meshing gear set 240 .

[0067] Among them, the second column 220 is sleeved and slidably arranged in the first column 210, the rotating end of the screw structure 230 is arranged in the first column 210, the lifting end of the screw structure 230 is connected to the second column 220, and the rotating end of the screw structure 230 is connected to the output end of the power unit through the meshing gear set 240.

[0068] As a possible scenario, the meshing gear set 240 includes two bevel gears meshing with each other, one of which is connected to the rotating end of the screw structure 230, and the other is connected to the output end of the power unit. When the transmission end of the power unit drives the bevel gear connected to it to rotate, it can drive the other bevel gear to rotate by meshing, thereby changing the lifting end of the screw structure 230.

[0069] It should be noted that the power unit can be an external drive motor or a rotating handle. By setting the electric mode of the drive motor, the situation of relevant staff climbing the roof can be reduced, that is, the start of the drive motor can be controlled by extending the control switch below; and when the lifting device 200 is raised and lowered less frequently, for example, only adjusting the lighting angle according to each quarter, a rotating handle can be set to further reduce costs.

[0070] Specifically, when the lighting angle needs to be adjusted due to seasonal changes, the power unit drives the rotation of the meshing gear set 240, thereby causing the screw structure 230 to rotate. The lifting end of the screw structure 230 drives the second column 220 to lift and lower the longitudinal beam 100, thereby achieving the adjustment of the lighting angle.

[0071] In summary, according to the guiding mechanism of the solar photovoltaic panel in the rooftop photovoltaic assembly of the embodiment of the present application, in response to severe weather conditions, the two mobile photovoltaic panels 500 can be driven by the bidirectional moving device 300 to approach the fixed photovoltaic panel and achieve stacking, and when the mobile photovoltaic panel 500 moves, the shielding device 600 can be linked to move the shielding device 600 to above the fixed photovoltaic panel 400 to protect the photovoltaic panel; after the severe weather is over, while the two mobile photovoltaic panels 500 are driven to unfold by the bidirectional moving device 300, the shielding device 600 can be linked to move below the fixed photovoltaic panel 400, which not only can effectively protect the photovoltaic panel, but also has a simple structure and does not take up space, so it can be used in rooftop photovoltaic assemblies.

[0072] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0074] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A guiding mechanism for a solar photovoltaic panel in a rooftop photovoltaic assembly, characterized in that: The invention comprises a longitudinal beam (100), a lifting device (200), a bidirectional moving device (300), a fixed photovoltaic panel (400), a movable photovoltaic panel (500) and a shielding device (600), wherein: The two longitudinal beams (100) are respectively arranged side by side in an inclined manner via a height-adjustable lifting device (200); The fixed photovoltaic panel (400) is arranged between the two longitudinal beams (100); Two movable photovoltaic panels (500) are respectively movably arranged along the length of the longitudinal beam and are respectively connected to two opposite moving ends of the bidirectional moving device (300) to expand or contract the two movable photovoltaic panels (500); The shielding device (600) is rotatably arranged between the two longitudinal beams (100), and the pivot end of the shielding device (600) is linked to the movable photovoltaic panel (500) at an inclined high position, so that when the two movable photovoltaic panels (500) are unfolded, the shielding device (600) moves below the fixed photovoltaic panel (400); when the two movable photovoltaic panels (500) are retracted, the shielding device (600) moves above the fixed photovoltaic panel (400).

2. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 1, characterized in that: The longitudinal beam (100) is a hollow cavity, and a cross beam (102) for reinforcement is provided between two longitudinal beams (100).

3. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 1, characterized in that: The bidirectional moving device (300) comprises a driving unit (310), a transmission structure (320), a fixing sleeve (330) and a roller (340), wherein: The transmission structure (320) is arranged in the longitudinal beam (100), and the driving end of the transmission structure (320) is connected to the output end of the driving unit (310); The two fixing sleeves (330) are respectively arranged on two opposite moving ends of the transmission structure (320); Two offset parallel sliding grooves (101) are provided on the inner wall of the longitudinal beam (100) along two opposite moving ends of the transmission structure (320); The two fixing sleeves (330) are respectively connected to the two movable photovoltaic panels (500) via rollers (340), and the rollers (340) are embedded in the corresponding sliding grooves (101).

4. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 3, characterized in that: The transmission structure (320) includes two sprockets arranged in the longitudinal beam (100) and a chain connecting the two sprockets, wherein one of the sprockets is connected to the driving unit (310), and the two fixing sleeves (330) are fixedly arranged on the upper and lower sides of the chain respectively.

5. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 3, characterized in that: The shielding device (600) comprises an active rod (610), a driven rod (620), a gear (630) and a baffle (640), wherein: The two parallel active rods (610) and the two driven rods (620) are respectively arranged on the longitudinal beam (100) in a manner capable of damping rotation; The gear (630) is coaxially arranged with the active rod (610); Both sides of the baffle (640) are pivotally connected to the ends of the active rod (610) and the driven rod (620) respectively; The bottom of the movable photovoltaic panel (500) at an inclined high position is provided with a first rack (501) and a second rack (502) at intervals, and the first rack (501) and the second rack (502) follow the movable photovoltaic panel (500) and intermittently mesh with the gear (630) in sequence.

6. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 5, characterized in that: Guide plates with inward-retracted openings are provided on the sides of the first rack (501) and the second rack (502).

7. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 5, characterized in that: The active rod (610) is provided with an arc structure (611), so that when the two movable photovoltaic panels (500) are retracted and stacked, the active rod (610) rotates to the top of the fixed photovoltaic panel (400), and the roller (340) on the movable photovoltaic panel (500) at an inclined high position is located in the concave side of the arc structure (611).

8. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 1, characterized in that: The bottom of the fixed photovoltaic panel (400) is arranged between the two longitudinal beams (100) via a fixing frame (401), and a gap (103) is left between both sides of the fixed photovoltaic panel (400) and the two longitudinal beams (100), and the pivot end of the shielding device (600) is located in the gap (103) to avoid interference with the movement of the shielding device (600).

9. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 1, characterized in that: One end of each longitudinal beam (100) is hinged via a base (201), and the other end is hinged to the corresponding jacking device (200), and the driving ends of the jacking devices (200) on the two longitudinal beams (100) are coaxially connected via a connecting rod (202).

10. The guiding mechanism of the solar photovoltaic panel in the roof photovoltaic assembly according to claim 1, characterized in that: The lifting device (200) comprises a first column (210), a second column (220), a screw structure (230) and a meshing gear set (240), wherein: The second column (220) is sleeved and slidably arranged inside the first column (210); The rotating end of the screw structure (230) is arranged in the first column (210), and the lifting end of the screw structure (230) is connected to the second column (220); The rotating end of the screw structure (230) is connected to the output end of the power unit via a meshing gear set (240).

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