Photovoltaic mobile monitoring trailer and modular installation method thereof

Abstract

The invention discloses a photovoltaic mobile monitoring trailer and a modular installation method thereof, and relates to the technical field of monitoring trailers, the photovoltaic mobile monitoring trailer comprises a vehicle body, and a monitoring device and a photovoltaic module which are arranged on the vehicle body, the photovoltaic module comprises a support, a driving module, a first photovoltaic panel and two second photovoltaic panels, the support is horizontally and slidably connected to the vehicle body, and the driving module is arranged on the support; the first photovoltaic panel is rotationally connected to the bracket; the two second photovoltaic panels are rotationally connected to the first photovoltaic panel through rotating shafts; after the first photovoltaic panel is installed on the support, the first photovoltaic panel and the two second photovoltaic panels which are in an overlapped state can be firstly opened by adjusting the position of the support, and then the sunlight receiving angle of the first photovoltaic panel and the two second photovoltaic panels can be adjusted by continuously moving the support. On one hand, a worker can conveniently adjust the angle of the photovoltaic panel, and on the other hand, the photovoltaic panel can receive sunlight irradiation when in a storage state, so that the ground is better protected.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring trailers, in particular to a photovoltaic mobile monitoring trailer and a modular installation method thereof. Background Art

[0002] In the field of modern security monitoring, mobile monitoring trailers are widely used as a flexible and efficient monitoring method for temporary monitoring, large-scale event security, emergency rescue site monitoring, etc. These trailers are usually equipped with monitoring equipment such as cameras, sensors, and communication equipment, which can be quickly deployed and provide real-time monitoring data.

[0003] The patent with announcement number CN203666483U discloses a mobile photovoltaic lighting trailer, which includes a trailer chassis and a photovoltaic power generation system and a lifting lighting system arranged on the trailer chassis. The photovoltaic power generation system includes a photovoltaic bracket, a photovoltaic power generation group and an electric energy storage box. The photovoltaic power generation assembly is arranged on the frame of the photovoltaic bracket. The lifting lighting system includes a telescopic rod, a rotating fixed frame, a lighting lamp, a wire pipe and an electrical control cabinet. The rotating fixed frame is connected to the top of the telescopic rod, and the lighting lamp is arranged on the rotating fixed frame. The utility model is suitable for non-electrical environments with large areas and high lighting requirements, especially for emergency lighting and electrical equipment places that need to be deployed quickly.

[0004] In the prior art such as the above-mentioned patent, multiple photovoltaic panels can be installed on the trailer to receive sunlight and store energy. However, firstly, when the photovoltaic panels are not in working state, the panels of each photovoltaic panel are still exposed to the outside, and secondly, the inclination angle of the photovoltaic panel cannot be changed to better receive sunlight. Summary of the invention

[0005] The object of the present invention is to provide a photovoltaic mobile monitoring trailer and a modular installation method thereof to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photovoltaic mobile monitoring trailer, comprising a vehicle body and a monitoring device and a photovoltaic assembly arranged on the vehicle body, the photovoltaic assembly comprising a bracket, a driving assembly, a first photovoltaic panel and two second photovoltaic panels, the bracket is horizontally slidably connected to the vehicle body, and the first photovoltaic panel is rotationally connected to the bracket; the two second photovoltaic panels are respectively rotationally connected to the first photovoltaic panel through a rotating shaft, and the two second photovoltaic panels have an unfolding position flush with the first photovoltaic panel and a folding position overlapping with the first photovoltaic panel in their rotation stroke; the driving assembly drives the bracket to slide in a stroke that sequentially includes the following strokes: a first stroke, driving the two second photovoltaic panels to switch from the folding position to the unfolding position respectively through a switching mechanism; a second stroke, the first photovoltaic panel abuts against the baffle on the vehicle body to flip the first photovoltaic panel.

[0007] Furthermore, the driving assembly includes a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly mounted on a fixed frame of the vehicle body, an actuating rod of the hydraulic cylinder is slidably connected to the cylinder body, and the actuating rod is fixedly connected to the bracket.

[0008] Furthermore, the switching mechanism includes: two slide grooves, which are respectively opened on two rotating shafts, and each slide groove includes a spiral groove and a vertical groove connected in sequence; an inclined rod, which is fixedly connected to the fixed frame of the vehicle body; a first sliding sleeve; which is slidably connected to the inclined rod, and two rotating rods are rotatably connected thereto, and the other ends of the two rotating rods are fixedly connected to the second sliding sleeves, and the two second sliding sleeves are each provided with a ball that rolls with the corresponding slide groove; at least one push rod, which is fixedly connected to one of the rotating rods; a hydraulic cylinder, which is arranged on the fixed frame of the vehicle body, and is used to drive the bracket to slide horizontally.

[0009] Furthermore, each of the slide grooves also includes an annular groove, and the annular groove is connected to the vertical groove.

[0010] Furthermore, the two rotating shafts are both provided with a reset assembly at the annular groove, and the reset assembly includes: two sliders, which are both slidably connected to the rotating shaft along the circumferential direction of the annular groove; two limit blocks, which are both fixedly connected to the rotating shaft; and an elastic member, the process of which restoring deformation drives one of the sliders to slide.

[0011] Furthermore, the elastic member includes a first spring, one end of the first spring is connected to one of the sliders, and the other end of the first spring is connected to the other slider.

[0012] Furthermore, a slot is provided in the first sliding sleeve, a groove is provided on the inclined rod, a rolling ball is provided at the groove of the groove, and a second spring is provided between the rolling ball and the groove.

[0013] Furthermore, a rotating shaft is fixedly connected to the first photovoltaic panel, a connecting plate is rotatably connected to the rotating shaft, and the connecting plate is fixedly connected to a bracket on the vehicle body.

[0014] Furthermore, there are two support rods, the two support rods are fixedly connected to the two rotating rods respectively, and the two support rods are respectively provided with roller sets.

[0015] The present invention also provides a modular installation method, which is implemented based on a photovoltaic mobile monitoring trailer and includes the following steps: S1, after the vehicle body is loaded to the designated working position by the front of the vehicle, the first photovoltaic panel is installed on the bracket of the vehicle body to achieve a sliding connection between the first photovoltaic panel and the vehicle body; S2, the bracket is pushed to slide, and in the first sliding stroke of the bracket, the two second photovoltaic panels are switched from the folding position to the unfolding position by a switching mechanism, and the receiving surfaces of the first photovoltaic panel and the second photovoltaic panel are both exposed; S3, after the first sliding stroke of the bracket is completed and during the second sliding stroke, the first photovoltaic panel will be flipped relative to the baffle to achieve a better angle for receiving sunlight.

[0016] In the above technical scheme, the present invention provides a photovoltaic mobile monitoring trailer and its modular installation method. After the first photovoltaic panel is installed on the bracket, the bracket is driven to slide relative to the vehicle body through the driving assembly. During the sliding process of the bracket in the first stroke, the two second photovoltaic panels on the first photovoltaic panel are switched from the overlapping position to the unfolding position. Thereafter, the light receiving surfaces of the first photovoltaic panel and the two second photovoltaic panels are exposed to the outside. In the second sliding stroke of the bracket, the first photovoltaic panel is flipped so that the angle of the first photovoltaic panel and the two second photovoltaic panels is adjusted so that the first photovoltaic panel and the two second photovoltaic panels reach the optimal angle for receiving sunlight.

[0017] After the first photovoltaic panel is installed on the bracket, the first photovoltaic panel and the two second photovoltaic panels in the overlapping state can be opened by adjusting the position of the bracket, and then the bracket can be moved further to adjust the angles of the first photovoltaic panel and the two second photovoltaic panels to receive sunlight. On the one hand, it is convenient for workers to adjust the angles of the photovoltaic panels, and on the other hand, it can also better protect the ground from sunlight when the photovoltaic panels are in the storage state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure of the device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the second photovoltaic panel in the stacking station provided by the embodiment of the present invention; Figure 3 A schematic diagram of a structure in which a second sliding sleeve is about to cooperate with a rotating shaft provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a second photovoltaic panel in an unfolding position provided by an embodiment of the present invention; Figure 5 A schematic diagram of a structure in which a first photovoltaic panel provided in an embodiment of the present invention is about to abut against a baffle; Figure 6 A schematic diagram of a first photovoltaic panel flip structure provided by an embodiment of the present invention; Figure 7 A schematic diagram of a rotating shaft structure provided by an embodiment of the present invention; Figure 8 A schematic diagram of the structure of the oblique rod and the first sliding sleeve provided in an embodiment of the present invention.

[0020] Description of reference numerals: 1. Vehicle body; 11. Monitoring device; 12. Bracket; 13. First photovoltaic panel; 131. Rotating shaft; 14. Second photovoltaic panel; 15. Fixed frame; 16. Baffle; 2. Hydraulic cylinder; 21. Cylinder body; 22. Actuator rod; 3. Rotating shaft; 31. Slide groove; 311. Spiral groove; 312. Vertical groove; 313. Annular groove; 4. Oblique rod; 41. First sliding sleeve; 411. Slot; 42. Groove; 421. Rolling ball; 422. Second spring; 5. Rotating rod; 51. Second sliding sleeve; 52. Retaining rod; 521. Wheel set; 6. Reset assembly; 61. Sliding block; 62. Limit block; 63. Elastic member; 7. Connecting plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] See also Figure 1-8A photovoltaic mobile monitoring trailer provided by an embodiment of the present invention includes a vehicle body 1 and a monitoring device 11 and a photovoltaic assembly arranged on the vehicle body 1. The photovoltaic assembly includes a bracket 12, a driving assembly, a first photovoltaic panel 13 and two second photovoltaic panels 14. The bracket 12 is horizontally slidably connected to the vehicle body 1, and the first photovoltaic panel 13 is rotationally connected to the bracket 12; the two second photovoltaic panels 14 are rotationally connected to the first photovoltaic panel 13 through a rotating shaft 3, respectively, and the two second photovoltaic panels 14 have an unfolding position flush with the first photovoltaic panel 13 and a folding position overlapping with the first photovoltaic panel 13 in their rotation stroke; the driving assembly drives the bracket 12 to slide in the stroke that includes the following strokes in sequence: in the first stroke, the two second photovoltaic panels 14 are driven by a switching mechanism to switch from the folding position to the unfolding position respectively; in the second stroke, the first photovoltaic panel 13 abuts against the baffle 16 on the vehicle body 1 To flip the first photovoltaic panel 13, specifically, the driving assembly includes a hydraulic cylinder 2, a cylinder body 21 of the hydraulic cylinder 2 is fixedly mounted on the fixed frame 15 of the vehicle body 1, an actuator rod 22 of the hydraulic cylinder 2 is slidably connected to the cylinder body 21, and the actuator rod 22 is fixedly connected to the bracket 12. The switching mechanism includes an inclined rod 4, a first sliding sleeve 41, at least one push rod 52, and slide grooves 31 respectively opened on the two rotating shafts 3, each slide groove 31 includes a spiral groove 311 and a vertical groove 312 connected in sequence; the inclined rod 4 is fixedly connected to the fixed frame 15 of the vehicle body 1; the first sliding sleeve 41 is slidably connected to the inclined rod 4, and two rotating rods 5 are rotatably connected to the first sliding sleeve 41, and the other ends of the two rotating rods 5 are fixedly connected to the second sliding sleeve 51, and the two second sliding sleeves 51 are provided with balls (not shown in the figure) that roll with the corresponding slide groove 31; at least one push rod 52 is fixedly connected to one of the rotating rods 5.

[0023] After the vehicle body 1 is transported to the designated position by the vehicle head, the worker installs the first photovoltaic panel 13 on the bracket 12. In this state, the second photovoltaic panel 14 is in a folding position relative to the first photovoltaic panel 13. After the installation is completed, the bracket 12 can drive the first photovoltaic panel 13 to slide, and then the hydraulic cylinder 2 is turned on. The actuator rod 22 of the hydraulic cylinder 2 can drive the bracket 12 to slide. During the horizontal sliding process of the bracket 12 relative to the vehicle body 1, the first photovoltaic panel 13 will first abut the abutting rod 52. The abutting rod 52 will slide along the oblique rod 4 due to the abutting force of the first photovoltaic panel 13. The abutting rod 52 will carry the first sliding sleeve 41 and then drive the second sliding sleeve 51 to move relative to the oblique rod 4. When the movement of the second sliding sleeve 51 is consistent with the movement of the first photovoltaic panel 1 3 moves synchronously. At a certain moment, the ball on the second sleeve 51 enters the spiral groove 311 of the corresponding shaft 3. At this moment, the bracket 12 is in the first stroke. The ball on the second sleeve 51 cooperates with the spiral groove 311 to drive the shaft 3 to rotate. The rotation of the shaft 3 will drive the second photovoltaic panel 14 to rotate, and the second photovoltaic panel 14 will switch from the folding position to the unfolding position. When the two second photovoltaics are switched to the unfolding position, the sunlight receiving surfaces of the first photovoltaic panel 13 and the two second photovoltaic panels 14 are exposed to the outside. At the same time, the ball on the second sleeve 51 enters the vertical groove 312 from the spiral groove 311. The ball enters the vertical groove 312 so that the two second photovoltaic panels 14 still remain in the unfolding position.

[0024] After the actuator rod 22 of the hydraulic cylinder 2 continues to pull the bracket 12, the bracket 12 will enter the second stroke from the first stroke. During the second stroke of the bracket 12 sliding horizontally relative to the vehicle body 1, the first photovoltaic panel 13 will be abutted by the baffle 16 and will rotate relative to the bracket 12. During the rotation of the first photovoltaic panel 13, the two second photovoltaic panels 14 will also rotate with the first photovoltaic panel 13. At the same time, the rotating shaft 3 drives the second sleeve 51 to rotate. The rotating rod 5 on the second sleeve 51 will rotate relative to the first sleeve 41. At the same time, the first sleeve 41 will also slide relative to the oblique rod 4 to adapt to the rotation of the first photovoltaic panel 13. When the receiving surfaces of the first photovoltaic panel 13 and the two second photovoltaic panels 14 reach the optimal angle for receiving sunlight, the sliding of the bracket 12 will be stopped. Thereafter, the first photovoltaic panel 13 and the second photovoltaic panel 14 can receive sunlight for energy conversion, store energy, and provide continuous power supply to the monitoring device 11.

[0025] When the sunlight receiving work of the first photovoltaic panel 13 and the two second photovoltaic panels 14 is completed, the actuator rod 22 pushes the bracket 12 to return, and the first photovoltaic panel 13 and the two second photovoltaic panels 14 will be reset relative to the first flip, and the rotating shaft 3 moves with the second sliding sleeve 51, and then the second sliding sleeve 51 drives the rotating rod 5 to rotate relative to the first sliding sleeve 41, and the first sliding sleeve 41 will also move relative to the inclined rod 4. After the bracket 12 enters the first stroke from the second stroke, the ball and the spiral groove 311 cooperate to make the rotating shaft 3 rotate, and the two second photovoltaic panels 14 will switch from the unfolding station to the overlapping station, and then the sunlight receiving surfaces of the first photovoltaic panel 13 and the two second photovoltaic panels 14 will be hidden, effectively protecting the sunlight receiving surfaces of the first photovoltaic panel 13 and the second photovoltaic panel 14.

[0026] In the above technical scheme, the present invention provides a photovoltaic mobile monitoring trailer and a modular installation method thereof. After the first photovoltaic panel 13 is installed on the bracket 12, the first photovoltaic panel 13 and the two second photovoltaic panels 14 in the overlapping state can be opened by adjusting the position of the bracket 12. Then, the bracket 12 can be moved further to adjust the angles of the first photovoltaic panel 13 and the two second photovoltaic panels 14 for receiving sunlight. On the one hand, it is convenient for workers to adjust the angles of the photovoltaic panels. On the other hand, it can also better protect the ground when the photovoltaic panels are in the storage state.

[0027] Among them, each slide groove 31 also includes an annular groove 313, which is connected to the vertical groove 312. After the vehicle body 1 is parked at the designated position, the two second photovoltaic panels 14 are switched to the deployment position, and then the two second photovoltaic panels 14 will extend on both sides of the vehicle body 1. When the second photovoltaic panel 14 is subjected to impact force, the second photovoltaic panel 14 will rotate relative to the first photovoltaic panel 13. During this process, the ball is in the annular groove 313 and does not affect the rotation of the second photovoltaic panel 14, which can effectively prevent the second photovoltaic panel 14 from further damage.

[0028] Among them, refer to Figure 7, the two rotating shafts 3 are both provided with a reset assembly 6 at the annular groove 313, and the reset assembly 6 includes two sliders 61, two limit blocks 62 and an elastic member 63. The two sliders 61 are slidably connected to the rotating shaft 3 along the circumferential direction of the annular groove 313; the two limit blocks 62 are fixedly connected to the rotating shaft 3; the elastic member 63 restores the deformation process to drive one of the sliders 61 to slide, specifically, the elastic member 63 includes a first spring, one end of the first spring is connected to one of the sliders 61, and the other end of the first spring is connected to the other slider 61. When the second photovoltaic panel 14 is impacted and flipped relative to the first photovoltaic panel 13, the position of the second sleeve 51 remains unchanged, and the position of the ball remains unchanged, but the second photovoltaic panel 14 will drive the rotating shaft 3 to rotate relative to the second sleeve 51. In this process, the ball will abut against one of the sliders 61 so that the position of this slider 61 relative to the ball remains unchanged, and this slider 61 will squeeze the first spring. When the impact force disappears, the first spring restores the deformation to drive the corresponding rotating shaft 3 to rotate, thereby driving the second photovoltaic panel 14 to automatically reset.

[0029] Among them, refer to Figure 8 A card slot 411 is provided in the first sliding sleeve 41, a groove 42 is provided on the inclined rod 4, a ball 421 is provided at the groove 42 of the groove 42, and a second spring 422 is provided between the ball 421 and the groove 42. After the first photovoltaic panel 13 abuts against the abutting rod 52, the first sliding sleeve 41 is pushed to cause the card slot 411 to disengage from the engagement with the ball 421 on the inclined rod 4, so that the first sliding sleeve 41 will not automatically slide along the inclined rod 4 under gravity when not in use.

[0030] Among them, there are two support rods 52, and the two support rods 52 are fixedly connected to the two rotating rods 5 respectively. The two support rods 52 are respectively provided with roller groups 521, which reduce the vertical friction between the support rod 52 and the first photovoltaic panel 13 relative to the first photovoltaic panel 13, but at the same time retain the lateral contact force between the support rod 52 and the first photovoltaic panel 13.

[0031] Among them, the first photovoltaic panel 13 is fixedly connected to a rotating shaft 131, and a connecting plate 7 is rotatably connected to the rotating shaft 131. The connecting plate 7 is fixedly connected to the bracket 12 on the vehicle body 1, and the fixed connection between the connecting plate 7 and the bracket 12 on the vehicle body 1 is achieved by bolts, which facilitates the removal and installation of the first photovoltaic panel 13 and the two second photovoltaic panels 14 from the bracket 12.

[0032] The present invention also provides a modular installation method, which is implemented based on a photovoltaic mobile monitoring trailer and includes the following steps: S1, after the vehicle body 1 is loaded to the designated working position by the front of the vehicle, the first photovoltaic panel 13 is installed on the bracket 12 of the vehicle body 1, so as to realize the sliding connection between the first photovoltaic panel 13 and the vehicle body 1; S2, the bracket 12 is pushed to slide, and in the first sliding stroke of the bracket 12, the two second photovoltaic panels 14 are switched from the folding position to the unfolding position by a switching mechanism, and the receiving surfaces of the first photovoltaic panel 13 and the second photovoltaic panel 14 are both exposed; S3, after the first sliding stroke of the bracket 12 ends and during the second sliding stroke, the first photovoltaic panel 13 will flip relative to the baffle 16 to achieve a better angle for receiving sunlight.

[0033] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic mobile monitoring trailer, comprising a vehicle body and a monitoring device and a photovoltaic module arranged on the vehicle body, characterized in that: The photovoltaic assembly includes a bracket, a driving assembly, a first photovoltaic panel and two second photovoltaic panels, the bracket is horizontally slidably connected to the vehicle body, and the first photovoltaic panel is rotatably connected to the bracket; The two second photovoltaic panels are respectively connected to the first photovoltaic panel by rotating shafts, and the rotation stroke of the two second photovoltaic panels has an unfolding position flush with the first photovoltaic panel and a folding position overlapping with the first photovoltaic panel; The travel of the driving assembly driving the bracket to slide includes the following travels in sequence: In the first stroke, the two second photovoltaic panels are driven by the switching mechanism to switch from the folding position to the unfolding position respectively; In the second stroke, the first photovoltaic panel abuts against a baffle on the vehicle body to flip the first photovoltaic panel.

2. A photovoltaic mobile monitoring trailer according to claim 1, characterized in that: The driving assembly comprises a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly mounted on a fixed frame of a vehicle body, an actuating rod of the hydraulic cylinder is slidably connected to the cylinder body, and the actuating rod is fixedly connected to a bracket.

3. The photovoltaic mobile monitoring trailer according to claim 1, characterized in that: The switching mechanism comprises: Two slide grooves are respectively arranged on two rotating shafts, and each slide groove comprises a spiral groove and a vertical groove which are connected in sequence; An oblique rod, which is fixedly connected to a fixing frame of the vehicle body; A first sliding sleeve; the first sliding sleeve is slidably connected to the inclined rod, and two rotating rods are rotatably connected to the first sliding sleeve. The other ends of the two rotating rods are fixedly connected to the second sliding sleeves, and the two second sliding sleeves are provided with balls that roll with the corresponding sliding grooves; At least one abutment rod is fixedly connected to one of the rotating rods.

4. A photovoltaic mobile monitoring trailer according to claim 3, characterized in that: Each of the slide grooves further includes an annular groove, and the annular groove is communicated with the vertical groove.

5. The photovoltaic mobile monitoring trailer according to claim 4, characterized in that: The two rotating shafts are both provided with a reset assembly at the annular groove, and the reset assembly includes: Two sliding blocks are connected to the rotating shaft in a sliding manner along the circumferential direction of the annular groove; Two limit blocks, both of which are fixedly connected to the rotating shaft; The elastic member drives a slider to slide during the process of restoring its deformation.

6. The photovoltaic mobile monitoring trailer according to claim 5, characterized in that: The elastic member comprises a first spring, one end of the first spring is connected to one of the sliders, and the other end of the first spring is connected to the other slider.

7. The photovoltaic mobile monitoring trailer according to claim 1, characterized in that: A clamping groove is arranged in the first sliding sleeve, a groove is arranged on the inclined rod, a rolling ball is arranged at the groove of the groove, and a second spring is arranged between the rolling ball and the groove.

8. The photovoltaic mobile monitoring trailer according to claim 1, characterized in that: The first photovoltaic panel is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with a connecting plate, and the connecting plate is fixedly connected to a bracket on the vehicle body.

9. The photovoltaic mobile monitoring trailer according to claim 3, characterized in that: There are two support rods, which are fixedly connected to the two rotating rods respectively, and the two support rods are respectively provided with wheel sets.

10. A modular installation method, implemented based on a photovoltaic mobile monitoring trailer according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, after the vehicle body is carried to the designated working position by the vehicle head, the first photovoltaic panel is installed on the bracket of the vehicle body, so as to realize the sliding connection between the first photovoltaic panel and the vehicle body; S2, pushing the bracket to slide, in the first sliding stroke of the bracket, in the first sliding stroke of the bracket, the two second photovoltaic panels are switched from the folding position to the unfolding position through the switching mechanism, and the receiving surfaces of the first photovoltaic panel and the second photovoltaic panel are exposed; S3, after the first sliding stroke of the bracket is completed, during the second sliding stroke, the first photovoltaic panel will flip relative to the baffle to achieve a better angle for receiving sunlight.

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