Driving system, array unit, and tracking-type overwater photovoltaic system

Abstract

Disclosed in the present invention are a driving system, an array unit, and a tracking-type overwater photovoltaic system. The driving system comprises a linkage assembly and a driving mechanism, wherein the linkage assembly is used for connecting at least two rotating shafts, so that each rotating shaft connected to the linkage assembly can rotate in a linkage mode; the driving mechanism is arranged on a floating body platform and is connected to one rotating shaft that is connected to the linkage assembly so as to drive each rotating shaft connected to the linkage assembly to rotate in the linkage mode. The driving system has a simple structure, and one driving system can drive a plurality of rows of photovoltaic modules to be linked, so that the requirement for installation on the floating body platform of an overwater photovoltaic array unit can be better met; additionally, the driving system can adapt to a long-row flat single-shaft tracking mode, the installed capacity can be better ensured, and the power generation capacity and the power generation efficiency are improved.

Description

A driving system, array unit and tracking water photovoltaic system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 6, 2023, with application number 202311149585.9 and invention name “A drive system, array unit and tracking water photovoltaic system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of water photovoltaic technology, and more particularly to a drive system, an array unit and a tracking water photovoltaic system. Background Art

[0003] According to the current application of surface photovoltaic products, most of them currently use fixed-angle brackets to install photovoltaic modules, resulting in relatively low power generation efficiency of photovoltaic modules. In order to improve the power generation efficiency of photovoltaic modules, a common method is to adjust the orientation of the surface photovoltaic array so that the photovoltaic array tracks the sun's radiation, thereby achieving an increase in power generation and power generation efficiency.

[0004] While ground-based solar tracking photovoltaic systems are available on the market, the drive and mounting structures of their tracking brackets are only suitable for terrestrial environments. For the relatively harsh aquatic environment, the drive and mounting methods of ground-based solar tracking photovoltaic systems are simply not feasible. While some solar tracking photovoltaic systems are available on the market, most use a dual-axis circular disc structure. Compared to traditional horizontal installations, this structure wastes more water area, hindering both power generation and efficiency.

[0005] In summary, how to solve the problem of low power generation and power generation efficiency of tracking water photovoltaic systems has become a technical problem that needs to be solved urgently by those skilled in the art.

[0006] Summary of the Invention

[0007] In view of this, the present invention provides a drive system, an array unit and a tracking water photovoltaic system to solve the problem of low power generation and power generation efficiency of the tracking water photovoltaic system, which has become a technical problem that needs to be urgently solved by those skilled in the art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A drive system for driving at least two parallel rotating shafts on an array unit, wherein the rotating shafts are rotatably disposed on a floating platform and are used to mount and support photovoltaic modules, comprising:

[0010] a linkage assembly, configured to connect at least two of the rotating shafts so that the connected rotating shafts can rotate in a coordinated manner;

[0011] The driving mechanism is provided on the floating platform and is connected to one of the rotating shafts connected to the linkage assembly, so as to drive the rotating shafts connected to the linkage assembly to rotate in linkage.

[0012] Optionally, the linkage assembly includes a transmission connecting rod and a rotating arm hingedly connected to the transmission connecting rod, and the number of the rotating arms is the same as the number of the rotating shafts linked by the linkage assembly and they are fixedly connected in a one-to-one correspondence.

[0013] Optionally, the transmission connecting rod is an integrated structure or is formed by splicing and connecting multiple connecting rods in sequence, and two adjacent connecting rods are fixedly connected by a connecting rod connecting piece, and the rotating arm is hinged to the connecting rod connecting piece.

[0014] Optionally, the driving mechanism includes a rotary reducer, and an output end of the rotary reducer is connected to the rotating shaft.

[0015] Optionally, the driving mechanism includes a linear push rod mechanism and a driving force arm, the fixed part of the linear push rod mechanism is arranged on the floating platform in a swingable manner, and the swing axis of the fixed part is parallel to the rotating axis connected to the driving mechanism; the first end of the driving force arm is hinged to the push rod part of the linear push rod mechanism, and the second end of the driving force arm is used to be fixedly connected to the rotating axis connected to the driving mechanism.

[0016] Optionally, the driving mechanism further includes a base assembly provided on the floating platform, and the fixing portion is swingably connected to the base assembly.

[0017] Optionally, the base assembly includes a fixed base, a support leg provided at the bottom of the fixed base, and a swing ear seat provided at the top of the fixed base;

[0018] Wherein, the supporting legs are used for connection to the floating platform, and the swinging ear seat is rotatably connected to the fixing part.

[0019] Optionally, a first mounting hole is provided on the support leg, and a second mounting hole is provided on the floating platform, and the first mounting hole and the second mounting hole are connected by a fastener.

[0020] Optionally, a first clamping structure is provided at the second end of the driving force arm, and the first clamping structure clamps and fixes the rotating shaft by cooperating with the second clamping structure.

[0021] Optionally, a controller is further included, and the controller is used to control at least one of the driving mechanisms to perform a driving action.

[0022] Optionally, the controller controls the driving mechanism to perform the driving action in such a manner that the rotation of the rotating shaft can drive the photovoltaic assembly to track sunlight.

[0023] Compared with the background technology introduction, the above-mentioned drive system is used to drive at least two parallel rotating shafts on the array unit. The rotating shafts are rotatably arranged on the floating platform, and the rotating shafts are used to install and support photovoltaic components. It includes a linkage component and a driving mechanism, wherein the linkage component is used to connect at least two rotating shafts so that the various rotating shafts connected to it can rotate in a linked manner; the driving mechanism is arranged on the floating platform and connected to one of the rotating shafts connected to the linkage component, so as to drive the various rotating shafts connected to the linkage component to rotate in a linked manner. In actual application, by arranging the above-mentioned drive system on the array unit, since the rotating shafts arranged on the floating platform can realize linked rotation through the linkage components, the drive mechanism only needs to drive one rotating shaft to rotate, which can drive the linked rotation of each rotating shaft connected to the linkage component, and then realize the adjustment of the lighting position of the photovoltaic component installed on the rotating shaft, that is, the photovoltaic component can track the movement of sunlight, and then the photovoltaic component can more fully receive sunlight, which helps to increase the power generation and power generation efficiency of the water photovoltaic system; in addition, the drive system structure is not only simple in structure, but also one drive system can drive multiple rows of photovoltaic components to be linked, which can better meet the installation on the floating platform of the array unit of the water photovoltaic, and at the same time can adapt to the tracking mode of long row flat single axis, which can better guarantee the installed capacity and improve the power generation and power generation efficiency.

[0024] The present invention also provides an array unit comprising a support system and a drive system, wherein the support system comprises a floating platform and at least two parallel rotating shafts rotatably disposed on the floating platform, and the drive system is the drive system described in any of the above-mentioned embodiments. Since the above-mentioned drive system has the above-mentioned technical effects, the array unit incorporating this drive system should also have corresponding technical effects, which will not be further described here.

[0025] Optionally, the cross section of the rotation axis is polygonal.

[0026] Optionally, the support system further comprises a support assembly arranged on the floating platform, a bearing seat is provided on the support assembly, and the rotating shaft is rotatably engaged with the bearing seat via a bearing.

[0027] Optionally, there are two support assemblies, each used to support two end sides of the bearing seat along a preset direction; the supporting force directions of the two support assemblies are both inclined toward the bearing mounted on the bearing seat;

[0028] Wherein, the preset direction is configured as a direction parallel to the plane where the floating platform is located and perpendicular to the rotation axis.

[0029] Optionally, the support assembly includes two legs, which are respectively arranged on the front and rear sides of the bearing seat; the bottom of the legs is used to connect to the floating platform, and the top of the legs is used to connect to the bottom of the bearing seat, and the two legs are gradually inclined from bottom to top toward the bearing located therebetween;

[0030] Wherein, the two legs are an integrally formed structure or a split structure.

[0031] The present invention also provides a tracking-type floating photovoltaic system comprising at least one of the aforementioned array units, wherein the array unit is any of the array units described in any of the aforementioned solutions. Since the aforementioned array unit has the aforementioned technical effects, a tracking-type floating photovoltaic system comprising the array unit should also have corresponding technical effects, which will not be further elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] FIG1 is a schematic diagram of the overall axial structure of a tracking water photovoltaic system provided by an embodiment of the present invention;

[0034] FIG2 is a schematic structural diagram of a plurality of rotating shafts linked together by a linkage assembly according to an embodiment of the present invention;

[0035] FIG3 is a schematic structural diagram of a drive system provided by an embodiment of the present invention installed on a floating platform and connected to a rotating shaft in a transmission manner;

[0036] FIG4 is a schematic diagram of the arrangement structure of a driving mechanism according to an embodiment of the present invention driving a rotating shaft through a linkage assembly;

[0037] FIG5 is a schematic structural diagram of a driving mechanism provided in an embodiment of the present invention;

[0038] FIG6 is a schematic structural diagram of a linear push rod mechanism provided in an embodiment of the present invention;

[0039] FIG7 is a schematic structural diagram of a fixing base provided in an embodiment of the present invention;

[0040] FIG8 is a schematic structural diagram of a swing ear seat provided in an embodiment of the present invention;

[0041] FIG9 is a schematic structural diagram of a driving force arm provided in an embodiment of the present invention;

[0042] FIG10 is a schematic diagram of a second clasping structure provided by an embodiment of the present invention;

[0043] FIG11 is a schematic structural diagram of a support leg provided in an embodiment of the present invention;

[0044] FIG12 is a schematic diagram of a structure in which a rotating shaft is installed on a floating platform through a support assembly according to an embodiment of the present invention;

[0045] FIG13 is a schematic structural diagram of a support assembly provided in an embodiment of the present invention;

[0046] FIG14 is a schematic structural diagram of a bearing seat provided in an embodiment of the present invention;

[0047] FIG15 is a schematic diagram of a first structural example of a bearing provided by an embodiment of the present invention;

[0048] FIG16 is a schematic structural diagram of a bearing clamp provided in an embodiment of the present invention;

[0049] FIG17 is a schematic structural diagram of a linkage assembly according to an embodiment of the present invention;

[0050] FIG18 is a schematic diagram of a second structure of a bearing provided by an embodiment of the present invention;

[0051] FIG19 is a schematic structural diagram of a rotating shaft provided in an embodiment of the present invention.

[0052] Among them, in Figures 1 to 19:

[0053] Rotation axis 1;

[0054] Floating platform 2;

[0055] Photovoltaic module 3;

[0056] Linkage assembly 4, transmission connecting rod 41, connecting rod 410, connecting rod connector 411, rotating arm 42, connecting portion 43;

[0057] Driving mechanism 5, linear push rod mechanism 51, fixing portion 511, swinging ear pin 5110, push rod portion 512, driving force arm 52, first clamping structure 521, second clamping structure 522, base assembly 53, fixing seat 531, support leg 532, swinging ear seat 533, bushing 534;

[0058] Support assembly 6, bearing seat 61;

[0059] Bearing 7, matching outer diameter 71, flange structure 72;

[0060] Bearing clamp 8. DETAILED DESCRIPTION

[0061] The core of the present invention is to provide a drive system, an array unit and a tracking water photovoltaic system to solve the problem of low power generation and power generation efficiency of the tracking water photovoltaic system, which has become a technical problem that needs to be solved urgently by those skilled in the art.

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0063] 1 to 19 , the present invention provides a drive system for driving at least two parallel rotating shafts 1 on an array unit, wherein the rotating shafts 1 are rotatably arranged on a floating platform 2, and the rotating shafts 1 are used to install and support photovoltaic modules 3. It should be noted that the array unit includes a support system and a drive system, wherein the support system includes a floating platform 2 and at least two parallel rotating shafts 1 rotatably arranged on the floating platform 2, and the floating platform 2 can specifically include a floating platform or a floating frame composed of multiple floating bodies, which can specifically include a main floating body mainly used to provide buoyancy for the entire array unit and a walkway floating body used to provide a walking channel for operation and maintenance; the photovoltaic modules 3 are installed on the rotating shaft 1 to form a long row of flat single-axis photovoltaic laying.

[0064] In addition, the drive system can specifically include a linkage component 4 and a drive mechanism 5, wherein the linkage component 4 is used to connect at least two rotating shafts 1 so that the rotating shafts 1 connected thereto can rotate in a linked manner. The linked rotation here means that when one rotating shaft 1 rotates, the other rotating shafts also rotate synchronously, and the angles of synchronous rotation can be the same or different. The present invention is preferably designed to have the same angle of synchronous rotation; the drive mechanism 5 is arranged on the floating platform 2 and is connected to one of the rotating shafts 1 connected to the linkage component 4, so as to drive the rotating shafts 1 connected to the linkage component 4 to rotate in a linked manner.

[0065] In actual application, by arranging the above-mentioned drive system on the array unit, since the rotating shafts 1 set on the floating platform 2 can realize linked rotation through the linkage component 4, the drive mechanism 5 only needs to drive one rotating shaft 1 to rotate, which can drive the linked rotation of each rotating shaft 1 connected to the linkage component 5, and then realize the adjustment of the lighting position of the photovoltaic component 3 installed on the rotating shaft 1, that is, the photovoltaic component 3 can track the movement of sunlight, and then the photovoltaic component 3 can more fully receive sunlight, which helps to increase the power generation and power generation efficiency of the water photovoltaic system; in addition, the drive system structure is not only simple in structure, but also one drive system can drive multiple rows of photovoltaic components 3 to be linked, which can better meet the installation on the floating platform 2 of the array unit of the water photovoltaic, and at the same time can adapt to the tracking mode of long-row flat single-axis, which can better guarantee the installed capacity and improve the power generation and power generation efficiency.

[0066] In some specific embodiments, referring to FIG2 in combination with FIG17 , the linkage assembly 4 can specifically include a transmission link 41 and a rotating arm 42 hingedly connected to the transmission link 41. The number of rotating arms 42 is the same as the number of rotating shafts 1 linked to the linkage assembly 4 and they are fixedly connected in a one-to-one correspondence. Specifically, when the rotating shaft 1 driven directly by the drive mechanism 5 rotates, the rotating arm 42 to which it is connected will drive the transmission link 41 to swing, and then drive the other rotating arms 42 to swing, thereby driving the other rotating shafts 1 to rotate, and finally driving the various rotating shafts 1 connected to the linkage assembly 4 to rotate and drive the photovoltaic assembly 3 to adjust its angle to better adapt to sunlight. Among them, a connecting portion 43 can be designed on the side of the rotating arm 42 corresponding to the rotating shaft 1. The connecting portion 43 can be fixedly connected to the rotating shaft 1 in a structure such as, but not limited to, a U-bolt. By designing the linkage assembly 4 into the structure of the transmission link 41 and rotating arm 42, the structure is simpler, easier to implement, and more suitable for water photovoltaic systems. It should be noted that the structural form of the above-mentioned linkage component 4 is only an example of the structure of the linkage component in an embodiment of the present invention. In actual application, it can also be designed into other structural forms. For example, the linkage between two adjacent rotating shafts 1 can be achieved through structural forms such as transmission belts and transmission chains. In actual application, the configuration can be selected according to actual needs, and no more specific limitations are made here.

[0067] In a further embodiment, as shown in FIG17 , the transmission connecting rod 41 can be specifically designed as an integrated structure, that is, the transmission connecting rod 41 is processed and manufactured from a single integral rod; or it can be formed by sequentially splicing and connecting multiple connecting rods 410, with two adjacent connecting rods 410 fixedly connected by a connecting rod connector 411, and the rotating arm 42 hinged to the connecting rod connector 411. By designing a structure in which multiple connecting rods 410 are spliced ​​together, on the one hand, processing and transportation costs can be reduced, and it is more adaptable to actual processing conditions, because the transmission connecting rod 41 is generally relatively long in actual application. On the other hand, by designing a structure in which pairs of connecting rods 410 are spliced ​​together, the hinged connection design between the transmission connecting rod 41 and the rotating arm 42 is more convenient and can be designed on the connecting rod connector 411, making processing more convenient. It should be noted that the above-mentioned connecting rod connecting piece can specifically adopt the structural form of a connecting plate. For example, bolt holes connected to the connecting rod 410 can be opened at both ends of the connecting plate. The four bolt holes realize surface positioning after connection with the connecting rod 410 to prevent the connecting rod and the connecting plate from rotating relative to each other, affecting the tracking angle difference between the front and rear rows of photovoltaic panels. The middle hole is a mounting hole connected to the pin shaft of the rotating arm 42.

[0068] In some other specific embodiments, the driving mechanism 5 may specifically include a rotary reducer, the output end of which is connected to the rotating shaft 1, and the rotating shaft 1 may be driven to rotate via the rotary reducer. Of course, it can be understood that the use of a rotary reducer drive method is only an example of an embodiment of the present invention. In actual application, it can also be designed into a structural form of other drive mechanisms. For example, with reference to Figure 3, combined with Figures 5-10, the above-mentioned drive mechanism 5 can specifically include a linear push rod mechanism 51 and a driving force arm 52, wherein the linear push rod mechanism 51 generally includes a fixed portion 511 and a push rod portion that linearly slides with the fixed portion 511, the fixed portion 511 is arranged on the floating platform 2 in a swingable manner, and the swing axis of the fixed portion 511 is parallel to the rotating shaft 1 connected to the drive mechanism 5; the first end of the driving force arm 52 is hinged to the push rod portion 512 of the linear push rod mechanism 51, and the second end of the driving force arm 52 is used to be fixedly connected to the rotating shaft 1 connected to the drive mechanism 5, so that the push rod portion 512 of the linear push rod mechanism 51 performs telescopic movement while the fixed portion 511 rotates relative to the floating platform 2, so that the driving force arm 52 can drive the rotating shaft 1 to rotate, the driving structure is simpler, the transmission error is small, the structure is stable, not easy to damage and easy to maintain. It should be noted that the linear push rod mechanism 51 may be, but is not limited to, an electric push rod, and may also be a pneumatic push rod or a hydraulic push rod.

[0069] Of course, it can be understood that the structural form of the above-mentioned linear push rod mechanism 51 combined with the driving force arm 52 is only an example of the structural form of the driving mechanism 5 in the embodiment of the present invention. In actual application, it can also be designed into other structural forms of driving mechanisms, such as a structural form in which the driving motor is connected to the rotating shaft 1 through a transmission mechanism, etc. However, the present invention preferably adopts the structural form of the above-mentioned linear push rod mechanism because this structural form has a more stable structure, can better adapt to the water photovoltaic system, and helps to improve the service life of the driving system.

[0070] In other specific embodiments, as shown in Figures 5-10, the drive mechanism 5 may further include a base assembly 53 disposed on the floating platform 2, with the fixed portion 511 being rotatably connected to the base assembly 53. The design of the base assembly 53 facilitates the rotatable design of the fixed portion 511, and the height of the base assembly 53 can be selected according to design requirements, which better meets the design requirements for the height position of the rotatable axis and the maximum rotatable angle of the fixed portion 511.

[0071] In a further embodiment, as shown in Figures 5 to 11, the base assembly 53 may specifically include a fixing seat 531, a support leg 532 disposed at the bottom of the fixing seat 531, and a swinging ear seat 533 disposed at the top of the fixing seat 531; wherein the support leg 532 is used for connection to the floating platform 2. For example, a first mounting hole is provided on the support leg 532, and a second mounting hole is provided on the floating platform 2. The first mounting hole and the second mounting hole are connected by fasteners. By designing such a structural form, the base assembly 53 is more convenient and quick to install on the floating platform 2, and the support leg 532 can better adapt to the corresponding suitable fixing position of the floating body on the floating platform 2; and the design of the mounting hole on the corresponding floating body on the floating platform 2 is simpler and more convenient than other structures, and occupies less space. It should be noted that the rotatable connection between the swing lug seat 533 and the fixed portion 511 can specifically be achieved by providing a swing lug pin 5110 on the fixed portion 511 that matches the swing lug seat 533. The two constitute a rotating pair. In order to improve the stability and service life of the rotational connection between the two and prevent severe wear of rotating parts, a bushing 534 can also be designed in the corresponding swing lug seat 533. Of course, it is understood that the above-mentioned structural form is merely an example of an embodiment of the present invention. In actual application, other structural forms can also be designed, such as a method of tightening the upper and lower pull rods on the floating body of the floating platform 2, etc., and no further specific limitations are given here.

[0072] In some specific embodiments, as shown in Figures 5 to 10, the second end of the driving force arm 52 can be provided with a first clamping structure 521, and the first clamping structure 521 can clamp and fix the rotating shaft 1 by cooperating with the second clamping structure 522. By designing the two clamping structures to clamp and fix, the operation is more convenient when the second end of the driving force arm 52 is fixedly connected to the rotating shaft 1, and the connection between the driving force arm 52 and the rotating shaft 1 is more reliable and stable. Of course, it can be understood that the above-mentioned structural form is only an example of an embodiment of the present invention. In actual application, it can also be designed into other structural forms, such as direct welding fixation, etc., which are not further limited here.

[0073] In some specific implementation schemes, in order to facilitate the control of the drive system, the above-mentioned drive system may further include a controller, which is used to control at least one drive mechanism 5 to perform a drive action. That is, one controller can control one drive mechanism 5 to perform a drive action, or one controller can simultaneously control two or more drive mechanisms 5 to perform a drive action. The design of the controller makes the control of the drive system more flexible and convenient. Among them, by controlling multiple drive mechanisms 5 with one controller, the number of controllers can be reduced, and the cost of electrical components of the entire system can be reduced; on the other hand, the number of rows driven by the mechanical linkage working group can be reduced (for example, when the controller drives 6 rows, it can be designed into 2 groups of mechanical linkage working groups, each group of mechanical linkage working groups can drive three rows, and the controller drives the two groups of mechanical linkage working groups to be electrically linked), thereby increasing the stability of the system structure.

[0074] In some specific embodiments, the controller controls the drive mechanism 5 to perform a driving action in such a manner that the rotation of the rotating shaft 1 can drive the photovoltaic assembly 3 to track the sun's illumination. Specifically, a photovoltaic tracking controller can be used for intelligent closed-loop control. The controller should be equipped with an angle collector, which is used to directly or indirectly obtain the current swing angle of the photovoltaic assembly 3. The photovoltaic tracking controller can control the drive mechanism 5 to perform corresponding actions based on the preset angle that matches the current solar illumination angle with the photovoltaic assembly 3 and the current swing angle of the photovoltaic assembly 3, so that the photovoltaic assembly 3 can swing to an angle that can track the sun's illumination. This control process can be intermittently adjusted at preset intervals or in real time. In actual application, the configuration can be selected based on actual needs. Since closed-loop control systems for controlling the swing of the photovoltaic assembly 3 to follow the sun's illumination are relatively mature existing technologies, no further specific limitations are given here. Of course, it is understood that the control methods of the controller described above are merely examples of embodiments of the present invention. In actual application, it can also be designed to manually calculate the swing angle of the photovoltaic assembly 3 to match the sunlight and perform manual adjustments. In actual application, the configuration can be selected based on actual needs, and no further specific limitations are given here.

[0075] The present invention also provides an array unit, as shown in Figures 1-3 , which specifically includes a support system and a drive system. The support system includes a floating platform 2 and at least two horizontally arranged rotating shafts 1 rotatably disposed on the floating platform 2. The drive system is the drive system described in any of the above-mentioned embodiments. Since the drive system has the above-mentioned technical effects, the array unit equipped with this drive system should also have corresponding technical effects, which will not be further described here.

[0076] It should be noted that the number of rows of array units can be configured according to the actual needs of the project. For different needs, it is only necessary to change the number of rotating axes 1 required for linkage of the linkage components to achieve linkage of different rows.

[0077] It should also be noted that the rotating shaft 1 can be specifically designed as a rotating shaft with a circular cross-section, such as a round tube, or can be designed as a rotating shaft with a polygonal cross-section, such as a square tube or other polygonal structures as shown in FIG19 . In the present invention, the rotating shaft 1 is preferably designed to have a polygonal cross-section because the rotating shaft 1 with a polygonal cross-section has better torsional mechanical properties and saves more material, which helps reduce costs and improve structural stability.

[0078] In some specific embodiments, as shown in Figures 12-18 , the support system can further include a support assembly 6 disposed on the floating platform 2, with a bearing seat 61 disposed on the support assembly 6. The rotating shaft 1 rotates in conjunction with the bearing seat 61 via a bearing 7. Two support assemblies 6 are provided, each used to support the two end sides of the bearing seat 61 along a predetermined direction. The supporting force of the two support assemblies 6 is tilted toward the bearing 7 mounted on the bearing seat 61. The predetermined direction is parallel to the plane of the floating platform 2 and perpendicular to the rotating shaft 1. This structural design allows the two support assemblies 6 to form a pyramid-like support structure, making it more stable and reliable.

[0079] In addition, each support assembly 6 can be specifically designed to include two legs, which are respectively arranged on the front and rear sides of the bearing seat 61. The bottom of the leg is used to be fixedly connected to the corresponding mounting hole on the floating body of the floating platform 2, and the top of the leg is used to connect to the bottom of the bearing seat 61. Of course, it is understandable that the two legs can be designed as a split structure or as an integral structure with the top connected. In the present invention, it is preferred to design the two legs as an integral structure, and the two legs are preferably designed to be gradually inclined from bottom to top toward the bearing 7 between the two. By designing the legs of the support assembly 6 into the above-mentioned structure, it is also helpful to improve the stability of the support of the support assembly 6.

[0080] In addition, as shown in Figures 12 to 18, by designing the support system into a structural form of a support assembly 6 and a bearing seat 61, the installation, layout and maintenance of the rotating shaft 1 are made more convenient. The support assembly 6 is mainly for facilitating connection with the mounting hole corresponding to the floating body of the floating platform 2; the bearing 7 is mainly for making the rotating shaft 1 and the bearing seat 61 rotate more smoothly. The bearing 7 can be, but is not limited to, a plastic bearing. The material of the bearing 7 is preferably POM, but is not limited to other materials with equivalent performance, such as PPS, UPE and other modified materials. Through injection molding, mass production can reduce costs. The two sides of the bearing 7 can be designed with a flange structure 72, and the middle is designed with a matching outer diameter 71, which can be assembled with the bearing clamp 8 to achieve an axial limit function. The inner diameter of the bearing clamp 8 generally reserves a gap of 1-2mm compared to the outer diameter of the bearing mating surface, and the good self-lubrication and wear resistance of materials such as POM are utilized to achieve free rotation of the main shaft. In addition, the bearing seat 61 is designed with a connection hole corresponding to the bearing hoop 8. Similarly, the structure of the bearing hoop 8 includes a mounting hole connected to the bearing seat 61. It should be noted that in order to improve the strength of the structure, the bearing hoop 8 is designed with a convex structure at the bend, and the overall stamping is lower in cost, but it is not limited to this processing method, such as bending, welding, etc.

[0081] In addition, the present invention also provides a tracking-type floating photovoltaic system, which is composed of at least one array unit, wherein the array unit is an array unit described in any of the above-mentioned embodiments. Since the aforementioned array unit has the aforementioned technical effects, the floating photovoltaic system including this array unit should also have the corresponding technical effects, which will not be described in detail here. The number of array units in the tracking-type floating photovoltaic system can be specifically configured according to actual needs.

[0082] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0083] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0084] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0085] In addition, 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 quantity of the technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0086] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A drive system for driving at least two parallel rotating shafts (1) on an array unit, wherein the rotating shafts (1) are rotatably arranged on a floating platform (2), and the rotating shafts (1) are used to install and support photovoltaic modules (3), characterized in that: include: A linkage assembly (4) for connecting at least two of the rotating shafts (1) so that the rotating shafts (1) connected thereto can rotate in a linked manner; A driving mechanism (5) is arranged on the floating platform (2) and is connected to one of the rotating shafts (1) connected to the linkage assembly (4) so ​​as to drive each of the rotating shafts (1) connected to the linkage assembly (4) to rotate in linkage.

2. The drive system according to claim 1, characterized in that: The linkage assembly (4) comprises a transmission connecting rod (41) and a rotating arm (42) hingedly connected to the transmission connecting rod (41); the number of the rotating arms (42) is the same as the number of the rotating shafts (1) linked to the linkage assembly (4) and they are fixedly connected in a one-to-one correspondence.

3. The drive system according to claim 2, characterized in that: The transmission connecting rod (41) is an integrated structure or is formed by sequentially splicing and connecting a plurality of connecting rods (410); two adjacent connecting rods (410) are fixedly connected via a connecting rod connecting piece (411); and the rotating arm (42) is hinged on the connecting rod connecting piece (411).

4. The drive system according to claim 1, characterized in that: The driving mechanism (5) comprises a rotary reducer, the output end of which is connected to the rotating shaft (1).

5. The drive system according to claim 1, characterized in that: The driving mechanism (5) comprises a linear push rod mechanism (51) and a driving force arm (52); a fixed portion (511) of the linear push rod mechanism (51) is rotatably arranged on the floating platform (2), and a swing axis of the fixed portion (511) is parallel to a rotating shaft (1) connected to the driving mechanism (5); a first end of the driving force arm (52) is hinged to the push rod portion (512) of the linear push rod mechanism (51), and a second end of the driving force arm (52) is used for fixed connection with the rotating shaft (1) connected to the driving mechanism (5).

6. The drive system according to claim 5, characterized in that: The driving mechanism (5) further comprises a base assembly (53) arranged on the floating platform (2), and the fixing portion (511) is swingably connected to the base assembly (53).

7. The drive system according to claim 6, characterized in that: The base assembly (53) comprises a fixed seat (531), a support foot (532) arranged at the bottom of the fixed seat (531), and a swing ear seat (533) arranged at the top of the fixed seat (531); The support leg (532) is used for connection with the floating platform (2), and the swing ear seat (533) is rotatably connected to the fixing part (511).

8. The drive system according to claim 7, characterized in that: The support foot (532) is provided with a first mounting hole, the floating platform (2) is provided with a second mounting hole, and the first mounting hole and the second mounting hole are connected via a fastener.

9. The drive system according to claim 5, characterized in that: The second end of the driving force arm (52) is provided with a first clamping structure (521), and the first clamping structure (521) clamps and fixes the rotating shaft (1) by cooperating with the second clamping structure (522).

10. The drive system according to any one of claims 1 to 9, characterized in that: It also comprises a controller, which is used to control at least one of the driving mechanisms (5) to perform a driving action.

11. The drive system according to claim 10, characterized in that: The controller controls the driving mechanism (5) to perform a driving action in such a manner that the rotation of the rotating shaft (1) can drive the photovoltaic component (3) to track the sunlight.

12. A square array unit, comprising a support system and a drive system, characterized in that: The support system comprises a floating platform (2) and at least two parallelly arranged rotating shafts (1) rotatably provided on the floating platform (2), and the drive system is a drive system according to any one of claims 1 to 11.

13. The square matrix unit according to claim 12, characterized in that: The cross section of the rotating shaft (1) is a polygon.

14. The square matrix unit according to claim 12, characterized in that: The support system further comprises a support assembly (6) arranged on the floating platform (2), a bearing seat (61) being arranged on the support assembly (6), and the rotating shaft (1) is rotatably matched with the bearing seat (61) via a bearing (7).

15. The square matrix unit according to claim 14, characterized in that: The number of the support components (6) is two and they are used to support the two end sides of the bearing seat (61) along a preset direction respectively; the supporting force directions of the two support components (6) are inclined toward the bearing (7) installed on the bearing seat (61); Wherein, the preset direction is configured as a direction parallel to the plane where the floating platform (2) is located and perpendicular to the rotation axis (1).

16. The square matrix unit according to claim 15, characterized in that: The support assembly (6) comprises two legs, which are respectively arranged at the front and rear sides of the bearing seat (61); the bottom of the legs is used to connect with the floating platform, and the top of the legs is used to connect with the bottom of the bearing seat (61), and the two legs are gradually inclined from bottom to top toward the bearing (7) located therebetween; Wherein, the two legs are of an integrally formed structure or a split structure.

17. A tracking water photovoltaic system, comprising at least one of the above array units, characterized in that: The square matrix unit is the square matrix unit according to any one of claims 12 to 16.

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