Synchronous folding and unfolding mechanism for photovoltaic carport and working method of synchronous folding and unfolding mechanism

Abstract

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic shed synchronous folding and unfolding mechanism and a working method thereof. The unfolding mechanism comprises a photovoltaic assembly, a stand column assembly, a supporting assembly and a connecting rod assembly; the photovoltaic assembly comprises a bottom assembly, a middle assembly and an end assembly which are sequentially connected through a gear set, and the tail end of the bottom assembly is rotationally installed on the stand column assembly. One end of the supporting assembly is hinged to the stand column assembly, and the other end of the supporting assembly is hinged to the bottom assembly. And the connecting rod assembly is connected with the photovoltaic assembly and the gear set to form two groups of parallel four-rod mechanisms. Compact folding, synchronous and stable unfolding and good wind resistance of the shed are achieved, and meanwhile the modularization degree and expansibility of the structure are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic power generation, in particular to a photovoltaic carport synchronous folding and unfolding mechanism and a working method thereof. BACKGROUND

[0002] The photovoltaic carport is a system combining solar photovoltaic panels and vehicle sunshades, which can provide sunshade and rain protection for vehicles and generate electricity by using solar energy.

[0003] The prior art discloses a foldable photovoltaic carport, which mainly comprises a stand, a longitudinal beam, a fixed support, a movable support, an electric push rod and a folding support. The fixed support is installed on the longitudinal beam, and a fixed solar panel is laid thereon. The movable support is hingedly connected to the fixed support at one end and is installed with a movable solar panel at the other end. The folding support is composed of a pull rod and a connecting rod, and forms a parallelogram mechanism together with the fixed support and the movable support. The electric push rod is hingedly connected to the carport support at one end and is connected to the folding support at the other end. The movable support is rotated around the hinge shaft by the extension and retraction of the push rod, so as to realize the unfolding and folding of the movable solar panel. When unfolded, the movable solar panel is in the same plane as the fixed solar panel, and when folded, the movable solar panel is turned over to below the fixed solar panel.

[0004] However, the prior art has the following technical problems: Firstly, the folding mode is only single-stage overturning, and the overall structure height is reduced limitedly after folding, so that the space occupied is still large, which is not conducive to standardized container transportation and storage.

[0005] Secondly, the structure relies on the electric push rod to directly drive the connecting rod mechanism. When the carport is large or multiple photovoltaic panels are installed, the multiple push rods are prone to out-of-sync movement due to installation errors or uneven loads, which affects the unfolding flatness and structural stability.

[0006] In addition, the structure has poor expandability, and it is difficult to realize flexible adjustment of the length of the carport by increasing intermediate modules.

[0007] Finally, the structure lacks effective mechanical locking devices, and only relies on the self-locking of the driving mechanism in strong wind environment, which has insufficient wind resistance and safety risks. SUMMARY

[0008] In view of the deficiencies of the prior art, the purpose of the embodiments of the present application is to provide a photovoltaic carport synchronous folding and unfolding mechanism, which realizes compact folding, synchronous and stable unfolding and good wind resistance of the carport by multi-module design and gear-parallel four-bar combined transmission mechanism, and improves the modular degree and expandability of the structure.

[0009] In order to achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions: The application discloses a photovoltaic carport synchronous folding and unfolding mechanism, which comprises a photovoltaic assembly, a stand column assembly, a support assembly and a connecting rod assembly.

[0010] Optionally, the stand column assembly comprises a stand column and a long shaft, the stand column is installed at two ends of the long shaft, and the stand column is exposed outside the two ends of the long shaft.

[0011] Optionally, the tail end of the bottom assembly is fixedly installed with a ratchet wheel, a ratchet pawl is rotatably installed on the outer side of the stand column, and the ratchet pawl can be clamped on the ratchet wheel.

[0012] Optionally, the tail side of the stand column is provided with a support plate, the bottom assembly comprises a bottom side beam and a bottom photovoltaic plate, the bottom photovoltaic plate is installed on the bottom side beam, the tail end of the bottom side beam is provided with a fixed plate, and when the photovoltaic carport is unfolded, the fixed plate is pressed on the support plate.

[0013] Optionally, the stand column is installed with a base, one end of the support assembly is rotatably installed on the base, and the other end is rotatably installed on the bottom side beam.

[0014] Optionally, the bottom assembly and the middle assembly are connected through a first gear set, the first gear set comprises a first gear and a second gear in engagement, the first gear is fixed at the front end of the bottom assembly, the second gear is fixed at the tail end of the middle assembly, the connecting rod assembly comprises a first rotating piece, one end of the first rotating piece is rotatably connected with the first gear, and the other end is fixedly connected with the second gear.

[0015] Optionally, the connecting rod assembly further comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected with the long shaft, the other end is rotatably connected with one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected with the first rotating piece.

[0016] Optionally, the middle assembly and the end assembly are connected through a second gear set, the second gear set comprises a third gear and a fourth gear in engagement, the third gear is fixed at the front end of the middle assembly, the fourth gear is fixed at the tail end of the end assembly, the connecting rod assembly further comprises a second rotating piece, one end of the second rotating piece is rotatably connected with the third gear, and the other end is fixedly connected with the fourth gear.

[0017] Optionally, the connecting rod assembly further comprises a third connecting rod, one end of the third connecting rod being rotatably connected with the first rotating member, and the other end of the third connecting rod being rotatably connected with the second rotating member.

[0018] The embodiment of the present application also provides a working method of the photovoltaic carport synchronous folding and unfolding mechanism. The bottom assembly is driven to rotate around the long shaft of the stand column assembly through the telescopic driving of the supporting assembly; The first gear at the front end of the bottom assembly is driven to rotate when the bottom assembly rotates, the first gear is engaged with the second gear at the tail end of the middle assembly, and thus the middle assembly is driven to move; The center of the first gear and the second gear is connected through the first rotating member, one end of the first rotating member is fixed to the center of the second gear, the other end of the first rotating member can rotate around the center of the first gear, meanwhile, one end of the first connecting rod is connected with the long shaft, the other end of the first connecting rod is connected with the first rotating member through the second connecting rod, and thus a first parallel four-bar mechanism is formed to synchronously control the movement of the bottom assembly and the middle assembly; The third gear at the front end of the middle assembly is driven to rotate when the middle assembly moves, the third gear is engaged with the fourth gear at the tail end of the end assembly, and thus the end assembly is driven to move; The center of the third gear and the fourth gear is connected through the second rotating member, one end of the second rotating member is fixed to the center of the fourth gear, the other end of the second rotating member can rotate around the center of the third gear, meanwhile, the other end of the second rotating member is connected with the first rotating member through the third rotating member, and thus a second parallel four-bar mechanism is formed to synchronously control the movement of the middle assembly and the end assembly; and thus the synchronous unfolding or folding of the photovoltaic carport is realized.

[0019] The one or more technical solutions provided in the embodiment of the present application have at least the following technical effects or advantages: 1.The carport synchronous folding and unfolding mechanism of the present application, wherein the photovoltaic assembly is connected in sequence through the bottom assembly, the middle assembly and the end assembly to form a foldable main body structure, and the three are connected through a gear set to realize power transmission, the rotary connection between the bottom assembly and the column assembly provides a rotating basis for overall unfolding; the support assembly is hingedly connected to the column assembly and the bottom assembly at both ends, and can directly apply a driving force to the bottom assembly, thereby avoiding power loss caused by additional transmission structure; the connection between the connecting rod assembly and the photovoltaic assembly and the gear set forms two parallel four-bar mechanisms, and the parallel four-bar mechanisms have the characteristic of stable movement track, which can ensure that the attitudes of the assemblies are consistent when they are unfolded and folded. Compared with the prior art, in the unfolding mechanism, the segmented design of the bottom assembly, the middle assembly and the end assembly cooperates with the gear set and the parallel four-bar mechanism, so that the three can be gradually folded, the overall volume is greatly compressed after folding, and the size can be adapted to the size of the container for transportation, thereby solving the problem that the volume after folding exceeds the accommodation range of conventional transportation equipment; secondly, the meshing transmission of the gear set is combined with the restraining action of the parallel four-bar mechanism to realize the synchronous movement of the bottom assembly, the middle assembly and the end assembly, thereby avoiding the deviation of the unfolding angle caused by the independent driving of multiple assemblies, ensuring the uniformity of the joint gap of the photovoltaic panel, and improving the power generation efficiency and the structural stability.

[0020] 2.The unfolding mechanism is suitable for multi-space scenes such as parking lots and industrial parks, and the coverage area can be flexibly expanded by increasing the number of middle assemblies without the need to redesign the overall structure, thereby improving the universality of the mechanism.

[0021] 3.The one-way mechanical lock is formed by the ratchet and the ratchet pawl. After unfolding, the pawl automatically falls into the ratchet tooth groove to prevent reverse rotation; when folding is needed, the pawl can be released manually or by electricity to unlock. This structure transfers the long-term static load of the support assembly to the metal tooth surface, avoids the continuous work of the support assembly, reduces energy consumption and improves wind resistance safety.

[0022] The advantages of the additional aspects of the present application will be given in the following description, some of which will become apparent from the following description, or will be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only illustrate some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0024] Figure 1 is a schematic view of the photovoltaic carport after folding provided by the embodiments of the present application; Figure 2is a schematic view of a column assembly provided by an embodiment of the present application; Figure 3 is a schematic view of a bottom assembly provided by an embodiment of the present application; Figure 4 is a schematic view of a middle assembly provided by an embodiment of the present application; Figure 5 is a schematic view of an end assembly provided by an embodiment of the present application; Figure 6 is a schematic view of a photovoltaic carport after being unfolded provided by an embodiment of the present application; Figure 7 is a schematic view of a connection between a bottom assembly and a column assembly provided by an embodiment of the present application; Figure 8 is a schematic view of a connection between a bottom assembly and a middle assembly provided by an embodiment of the present application; Figure 9 is a schematic view of an unfolding process provided by an embodiment of the present application; Figure 10 is a schematic view of a connection between a middle assembly and an end assembly provided by an embodiment of the present application; In the figure: 1, column assembly; 1-1, column; 1-2, base; 1-3, long shaft; 1-4, ratchet pawl; 1-5, support plate; 2, first rotating piece; 3, bottom assembly; 3-1, bottom side beam; 3-2, first gear; 3-3, bottom photovoltaic panel; 3-4, ratchet; 3-5, fixed plate; 4, support assembly; 5, middle assembly; 5-1, middle side beam; 5-2, third gear; 5-3, middle photovoltaic panel; 5-4, second gear; 6, second connecting rod; 7, end assembly; 7-1, end side beam; 7-2, fourth gear; 7-3, end photovoltaic panel; 8, first connecting rod; 9, second rotating piece; 10, third connecting rod; DETAILED DESCRIPTION It should be noted that the following detailed description is illustrative only, and is intended to provide further description in connection with the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Furthermore, it should be understood that the use of the term "including", as well as other like terms, has the same meaning unless otherwise specifically stated.

[0025] Example 1 As Figure 1 , Figure 6 , Figure 9As shown, the embodiment proposes a photovoltaic carport synchronous folding and unfolding mechanism, comprising: a photovoltaic assembly, a column assembly 1, a support assembly 4 and a connecting rod assembly; the photovoltaic assembly comprises a bottom assembly 3, a middle assembly 5 and an end assembly 7 connected in sequence through a gear set, the tail end of the bottom assembly 3 is rotatably installed on the column assembly 1; one end of the support assembly 4 is hingedly connected with the column assembly 1, and the other end is hingedly connected with the bottom assembly 3; the connecting rod assembly is connected with the photovoltaic assembly and the gear set, forming two parallel four-bar mechanisms.

[0026] The photovoltaic assembly connects the bottom, middle and end through the gear set to form a rigid motion chain, the column assembly 1 provides a fixed rotation center, the support assembly 4 converts the linear driving force into the angular displacement of the bottom assembly 3, and the connecting rod assembly uses two parallel four-bar mechanisms to synchronously deliver the angular displacement to the middle and end. The structure provides power through the support assembly 4 to drive the bottom assembly 3 to rotate around the column assembly 1, and then through the gear transmission and the linkage of the parallel four-bar mechanism, the synchronous unfolding or folding motion of the middle assembly 5 and the end assembly 7 is realized. When unfolded, each photovoltaic panel is in place at one time, and when folded, it is nested layer by layer, and the thickness is compressed to within the height of the column 1-1, solving the problem of oversize transportation volume.

[0027] As shown in the Figure 2 column assembly 1 comprises a column 1-1 and a long shaft 1-3, the column 1-1 is installed at both ends of the long shaft 1-3, and the column 1-1 is exposed outside both ends of the long shaft 1-3, and the bottom assembly 3 is rotatably installed at the end of the long shaft 1-3.

[0028] The column 1-1 is installed at both ends of the long shaft 1-3 and exposed outside both ends of the long shaft 1-3, so that the long shaft 1-3 forms a support shaft spanning the two columns 1-1, and the bottom assembly 3 is rotatably installed at the end of the long shaft 1-3. This installation method not only ensures the support strength of the long shaft 1-3 to the bottom assembly 3, but also provides sufficient rotation space for the bottom assembly 3.

[0029] The design of exposing both ends of the long shaft 1-3 allows the bottom assembly 3 to be directly assembled at the end of the long shaft 1-3, without the need for additional complex mounting hole positions on the column 1-1, simplifying the assembly process and reducing the difficulty of machining and installation. Secondly, the two columns 1-1 are connected by the long shaft 1-3 to form a stable frame structure, improving the overall wind load resistance of the column assembly 1 and avoiding structural shaking caused by single column 1-1 independent support.

[0030] As shown in the Figure 7 the tail end of the bottom assembly 3 is fixedly installed with a ratchet 3-4, the outer side surface of the column 1-1 is rotatably installed with a ratchet pawl 1-4, and the ratchet pawl 1-4 can be connected to the ratchet 3-4.

[0031] The ratchet wheel 3-4 is fixedly connected with the bottom assembly 3 and rotates synchronously with the bottom assembly 3, the ratchet pawl 1-4 is rotatably installed on the outer side of the stand column 1-1 and can rotate around the installation point thereof, when the bottom assembly 3 rotates to a preset angle, the ratchet pawl 1-4 is clamped in the tooth groove of the ratchet wheel 3-4, forming mechanical locking.

[0032] The mechanical locking structure is independent of the self-locking function of the supporting assembly 4, that is, even if the self-locking function of the supporting assembly 4 fails in an outdoor harsh environment, the cooperation of the ratchet wheel 3-4 and the ratchet pawl 1-4 can still maintain the unfolding angle of the bottom assembly 3, avoiding the falling or deviation of the bottom assembly 3, and improving the safety of the mechanism in harsh working conditions such as strong wind and high temperature; moreover, the structure of the ratchet wheel 3-4 and the ratchet pawl 1-4 is simple and reliable, without the need for a complex electric control system, thereby reducing the failure rate and maintenance cost.

[0033] As shown in Figure 2 , Figure 3 , the tail side of the stand column 1-1 is provided with a support plate 1-5, the bottom assembly 3 includes a bottom side beam 3-1 and a bottom photovoltaic panel 3-3, the bottom photovoltaic panel 3-3 is installed on the bottom side beam 3-1, and the tail end of the bottom side beam 3-1 is provided with a fixed plate 3-5, when the photovoltaic carport is unfolded, the fixed plate 3-5 is pressed on the support plate 1-5.

[0034] The support plate 1-5 is welded on the tail side of the stand column 1-1, and the fixed plate 3-5 at the tail end of the bottom side beam 3-1 is pressed on the support plate 1-5 after being rotated by 100° during unfolding, forming a face-to-face contact pair. The contact pair is locked with the ratchet wheel 3-4 to form double constraints.

[0035] The stand column 1-1 is provided with a base 1-2, one end of the supporting assembly 4 is rotatably installed on the base 1-2, and the other end is rotatably installed on the bottom side beam 3-1. The supporting assembly 4 can be a hydraulic cylinder or a pneumatic cylinder, an electric telescopic rod, etc.

[0036] The setting of the base 1-2 makes the connection between the supporting assembly 4 and the stand column assembly 1 more firm, avoids local stress concentration caused by direct hinging on the stand column 1-1, and prolongs the service life of the stand column 1-1; secondly, the hinged connection mode at both ends of the supporting assembly 4 can adapt to the change of the rotation angle of the bottom assembly 3 during the extension and contraction process, ensures that the driving force is always applied in the effective direction, avoids the driving force loss caused by angle deviation, and improves the power transmission efficiency.

[0037] As shown in Figure 8As shown, the bottom assembly 3 and the middle assembly 5 are connected by the first gear set 3-2, which includes the first gear 3-2 and the second gear 5-4 engaged with each other, the first gear 3-2 is fixed at the front end of the bottom assembly 3, and the second gear 5-4 is fixed at the tail end of the middle assembly 5, the linkage assembly includes a first rotating member 2, the first rotating member 2 is in the shape of "Z" as a whole, one end of the first rotating member 2 is rotatably connected with the first gear 3-2, and the other end is fixedly connected with the second gear 5-4. The structure design of the first gear set 3-2 and the first rotating member 2 realizes the power transmission and synchronous movement of the bottom assembly 3 and the middle assembly 5, and guarantees the overall synchronization of the photovoltaic assembly.

[0038] The engagement of the first gear 3-2 and the second gear 5-4 can ensure that the rotation angles of the bottom assembly 3 and the middle assembly 5 are in a fixed ratio, avoid the synchronization deviation caused by transmission error, and solve the problem of different step of multiple assemblies; secondly, the connection of the first rotating member 2 forms a linkage structure of the bottom assembly 3 and the middle assembly 5, when the bottom assembly 3 rotates, the middle assembly 5 moves synchronously under the double actions of gear transmission and the constraint of the first rotating member 2, ensuring that the unfolding and folding postures of the two are consistent. The combination of the power transmission of the first gear set 3-2 and the trajectory constraint of the first rotating member 2 makes the movement of the bottom assembly 3 and the middle assembly 5 have both power source and stable trajectory, and the two work together to ensure that the middle assembly 5 moves synchronously with the bottom assembly 3.

[0039] The linkage assembly further includes a first connecting rod 8 and a second connecting rod 6, one end of the first connecting rod 8 is rotatably connected with the long shaft 1-3, the other end is rotatably connected with one end of the second connecting rod 6, and the other end of the second connecting rod 6 is rotatably connected with the first rotating member 2. The first connecting rod 8, the second connecting rod 6, the first rotating member 2 and the bottom side beam 3-1 of the bottom assembly 3 form a parallelogram mechanism.

[0040] The cooperation of the first connecting rod 8, the second connecting rod 6 and the first rotating member 2 forms double constraints with the engagement transmission of the first gear set 3-2, which transmits power through the gear and constrains the trajectory through the parallelogram mechanism, and the two together ensure that the bottom assembly 3 and the middle assembly 5 move synchronously and stably.

[0041] As shown in Figure 10 The middle assembly 5 and the end assembly 7 are connected by the second gear set 5-4, which includes the third gear 5-2 and the fourth gear 7-2 engaged with each other, the third gear 5-2 is fixed at the front end of the middle assembly 5, and the fourth gear 7-2 is fixed at the tail end of the end assembly 7, the linkage assembly further includes a second rotating member 9, the second rotating member 9 is in the shape of "L" as a whole, one end is rotatably connected with the third gear 5-2, and the other end is fixedly connected with the fourth gear 7-2.

[0042] The meshing transmission of the third gear 5-2 and the fourth gear 7-2 continues the precise transmission characteristics of the first gear 3-2 group, so that the end assembly 7 and the middle assembly 5 keep synchronous movement, and the overall synchronization of the bottom assembly 3, the middle assembly 5 and the end assembly 7 is realized, thereby avoiding the unfolding deviation caused by the independent movement of the end assembly 7. The cooperation of the second gear 5-4 group and the second rotating part 9 forms linkage with the first group of parallel four-bar mechanisms, and the middle assembly 5 moves stably under the constraint of the first group of parallel four-bar mechanisms, while the end assembly 7 is driven to move by the second gear 5-4 group, and the second rotating part 9 constrains the movement track of the end assembly 7, and the three work together to ensure that the end assembly 7 and the middle assembly 5 are synchronous and stable.

[0043] The linkage assembly further comprises a third linkage 10, one end of which is rotationally connected with the first rotating part 2, and the other end of which is rotationally connected with the second rotating part 9. Figure 4 、 Figure 5 As shown in the drawings, the middle assembly 5 comprises a middle side beam 5-1 and a middle photovoltaic panel 5-3, and the end assembly 7 comprises an end side beam 7-1 and an end photovoltaic panel 7-3. The third linkage 10 connects the first rotating part 2 and the second rotating part 9, forming a second group of parallel four-bar mechanisms, further constraining the movement track of the middle assembly 5 and the end assembly 7, so that the overall movement of the photovoltaic assembly is more stable and synchronous.

[0044] The parallel four-bar mechanism composed of the first rotating part 2, the third linkage 10, the second rotating part 9 and the side beam of the middle assembly 5 forms a symmetrical structure with the first group of parallel four-bar mechanisms, and the movement track of the middle assembly 5 and the end assembly 7 is doubly constrained, so that the three always maintain the preset posture during unfolding and folding, avoiding movement deviation caused by component deformation, and improving the overall stability of the mechanism; secondly, the connection of the third linkage 10 makes the first rotating part 2 and the second rotating part 9 form linkage, when the middle assembly 5 moves, the power can be transmitted to the second rotating part 9 through the first rotating part 2 and the third linkage 10, ensuring the synchronization of the end assembly 7.

[0045] In summary, the photovoltaic carport synchronous folding and unfolding mechanism of the embodiment mainly consists of a stand column assembly 1, a bottom assembly 3, a middle assembly 5, an end assembly 7, a support assembly 4 and a connecting rod assembly. The stand column assembly 1 is fixed by a long shaft 1-3, the tail end of the bottom assembly 3 is installed on the long shaft 1-3, a ratchet wheel 3-4 is fixedly connected with the bottom assembly 3, a ratchet pawl 1-4 is installed on the stand column assembly 1, and the bottom assembly 3 rotates 100 degrees around the long shaft 1-3. The front end of the bottom assembly 3 is fixed with a first gear 3-2, the tail end of the middle assembly 5 is fixed with a second gear 5-4, the first gear 3-2 and the second gear 5-4 are engaged, the centers of the two gears are connected by a first rotating piece 2, the first rotating piece 2 is in the shape of "Z" as a whole, one end is fixed at the center of the second gear 5-4, and the other end can rotate around the center of the first gear 3-2. One end of a first connecting rod 8 is fixed with the long shaft 1-3, and the other end is connected with the first rotating piece 2 through a second connecting rod 6. A parallel four-bar mechanism is formed by the first connecting rod 8, the second connecting rod 6, the first rotating piece 2 and the side beam of the bottom assembly 3. The front end of the middle assembly 5 is fixed with a third gear 5-2, the tail end of the end assembly 7 is fixed with a fourth gear 7-2, the third gear 5-2 and the fourth gear 7-2 are engaged, the centers of the two gears are connected by a second rotating piece 9, the second rotating piece 9 is in the shape of "L" as a whole, one end is fixed at the center of the fourth gear 7-2, and the other end can rotate around the center of the third gear 5-2, and a parallel four-bar mechanism is formed by the first rotating piece 2, a third connecting rod 10, the second rotating piece 9 and the side beam of the middle assembly 5. Under the extension and contraction of the linear drive of the support assembly 4, the rotation of the parallel four-bar mechanism is realized, so that the photovoltaic carport is unfolded.

[0046] The "double parallel four-bar mechanism + gear set + linear drive" is adopted to realize the rapid installation of the componentized photovoltaic carport, greatly reduce the on-site construction, solve the problems of inconvenient transportation of photovoltaic supports and complicated on-site construction, and improve the installation efficiency.

[0047] The photovoltaic carport is manufactured in a factory in a componentized manner, has simple manufacturing, less on-site construction, occupies less space after contraction, conforms to the size of a container for transportation, and is convenient for transportation.

[0048] Embodiment 2 The embodiment provides a working method of a photovoltaic carport synchronous folding and unfolding mechanism as described in Embodiment 1, which comprises the following steps. The bottom assembly 3 is driven to rotate around the long shaft 1-3 on the stand column assembly 1 through the extension and contraction of the support assembly 4; When the bottom assembly 3 rotates, the first gear 3-2 at the front end of the bottom assembly 3 rotates, the first gear 3-2 is engaged with the second gear 5-4 at the tail end of the middle assembly 5, and thus the middle assembly 5 is driven to move; The center of the first gear 3-2 and the second gear 5-4 is connected through the first rotating part 2, one end of the first rotating part 2 is fixed to the center of the second gear 5-4, the other end can rotate around the center of the first gear 3-2, meanwhile, one end of the first connecting rod 8 is connected with the long shaft 1-3, the other end is connected with the first rotating part 2 through the second connecting rod 6, forming a first parallel four-bar mechanism, to synchronously control the movement of the bottom assembly 3 and the middle assembly 5; The middle assembly 5 drives the third gear 5-2 at the front end to rotate, the third gear 5-2 is engaged with the fourth gear 7-2 at the tail end of the end assembly 7, thereby driving the end assembly 7 to move; The center of the third gear 5-2 and the fourth gear 7-2 is connected through the second rotating part 9, one end of the second rotating part 9 is fixed to the center of the fourth gear 7-2, the other end can rotate around the center of the third gear 5-2, meanwhile, the other end of the second rotating part 9 is connected with the first rotating part 2 through the third rotating part, forming a second parallel four-bar mechanism, to synchronously control the movement of the middle assembly 5 and the end assembly 7; thereby realizing the synchronous unfolding or folding of the photovoltaic canopy.

[0049] The extension and contraction of the supporting assembly 4 provides an initial driving force for the mechanism, through the rotation of the bottom assembly 3 to drive the first gear 3-2 to move, and then through the gear engagement and the cooperation of the parallel four-bar mechanism, sequentially transmitted to the middle assembly 5 and the end assembly 7, realizing the synchronous unfolding or folding of the three.

[0050] The driving force of the supporting assembly 4 is transmitted through the gear set and the parallel four-bar mechanism, avoiding the synchronization problem caused by independent driving of multiple power sources, ensuring that the bottom assembly 3, the middle assembly 5 and the end assembly 7 have consistent unfolding and folding angles; moreover, the mechanism is simple to operate, only the extension and contraction of the supporting assembly 4 is needed to realize the overall movement, without the need for additional control of the independent driving of each assembly, reducing the operation difficulty and the complexity of the electric control system.

[0051] The above describes the specific embodiments of the present application in combination with the drawings, but is not a limitation on the protection scope of the present application, those skilled in the art should understand that various modifications or variations made by those skilled in the art on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A photovoltaic carport synchronous folding and unfolding mechanism, characterized in that, The utility model relates to a photovoltaic carport, which comprises a photovoltaic assembly, a column assembly, a support assembly and a connecting rod assembly. The photovoltaic assembly comprises a bottom assembly, a middle assembly and an end assembly connected in sequence through a gear set, the tail end of the bottom assembly is rotatably installed on the column assembly; One end of the support assembly is hingedly connected to the column assembly, and the other end is hingedly connected to the bottom assembly; The connecting rod assembly is connected to the photovoltaic assembly and the gear set, forming two parallel four-bar mechanisms. The column assembly comprises a column and a long shaft, the column is installed at both ends of the long shaft, and the column is exposed outside both ends of the long shaft, and the bottom assembly is rotatably installed at the end of the long shaft.

2. The photovoltaic carport synchronous folding and unfolding mechanism of claim 1, wherein, The tail end of the bottom assembly is fixedly installed with a ratchet wheel, a ratchet pawl is rotatably installed on the outer side of the column, and the ratchet pawl can be clamped on the ratchet wheel.

3. The photovoltaic canopy synchronous folding and unfolding mechanism of claim 2, wherein, The tail side of the column is provided with a support plate, the bottom assembly comprises a bottom side beam and a bottom photovoltaic panel, the bottom photovoltaic panel is installed on the bottom side beam, the tail end of the bottom side beam is provided with a fixed plate, and when the photovoltaic carport is unfolded, the fixed plate is pressed on the support plate.

4. The photovoltaic canopy synchronous folding and unfolding mechanism of claim 2, wherein, A base is installed on the column, one end of the support assembly is rotatably installed on the base, and the other end is rotatably installed on the bottom side beam.

5. The photovoltaic carport synchronous folding and unfolding mechanism of claim 4, wherein, The bottom assembly and the middle assembly are connected through a first gear set, the first gear set comprises a first gear and a second gear in engagement, the first gear is fixed at the front end of the bottom assembly, the second gear is fixed at the tail end of the middle assembly, the connecting rod assembly comprises a first rotating part, one end of the first rotating part is rotatably connected to the first gear, and the other end is fixedly connected to the second gear.

6. The photovoltaic carport synchronous folding and unfolding mechanism of claim 2, wherein, The connecting rod assembly further comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the long shaft, the other end is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the first rotating part.

7. The photovoltaic carport synchronous folding and unfolding mechanism of claim 6, wherein, The middle assembly and the end assembly are connected through a second gear set, the second gear set comprises a third gear and a fourth gear in engagement, the third gear is fixed at the front end of the middle assembly, the fourth gear is fixed at the tail end of the end assembly, the connecting rod assembly further comprises a second rotating part, one end of the second rotating part is rotatably connected to the third gear, and the other end is fixedly connected to the fourth gear.

8. The photovoltaic canopy synchronous folding and unfolding mechanism of claim 6, wherein, The connecting rod assembly further comprises a third connecting rod, one end of the third connecting rod is rotatably connected to the first rotating part, and the other end is rotatably connected to the second rotating part.

9. The photovoltaic carport synchronous folding and unfolding mechanism of claim 8, wherein, The utility model relates to a photovoltaic carport, which comprises a photovoltaic assembly, a column assembly, a support assembly and a connecting rod assembly.

10. A method of operating a photovoltaic canopy synchronous folding and unfolding mechanism according to any one of claims 1-9, characterized in that, The bottom assembly is driven to rotate around the long shaft on the column assembly through the extension of the support assembly; When the bottom assembly rotates, the first gear at the front end of the bottom assembly rotates, the first gear is engaged with the second gear at the tail end of the middle assembly, thereby driving the middle assembly to move; The center of the first gear and the second gear is connected through the first rotating part, one end of the first rotating part is fixed to the center of the second gear, the other end can rotate around the center of the first gear, one end of the first connecting rod is connected to the long shaft, the other end is connected to the first rotating part through the second connecting rod, forming a first parallel four-bar mechanism, thereby synchronously controlling the movement of the bottom assembly and the middle assembly; ​ The third gear at the front end of the middle assembly is driven to rotate when the middle assembly moves, and the third gear is engaged with the fourth gear at the tail end of the end assembly, thereby driving the end assembly to move; The centers of the third gear and the fourth gear are connected through a second rotating member, one end of the second rotating member is fixed to the center of the fourth gear, the other end of the second rotating member is rotatable around the center of the third gear, and meanwhile the other end of the second rotating member is connected with the first rotating member through a third rotating member, forming a second parallel four-bar mechanism, so as to synchronously control the movement of the middle assembly and the end assembly, thereby realizing synchronous unfolding or folding of the photovoltaic carport.

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