Single drive dual-axis linkage photovoltaic tracking support

Abstract

The utility model provides a single drive double axle linkage photovoltaic tracking support, including skid platform drive mechanism, stand, rotating frame, linkage support, photovoltaic board mounting bracket, drive mechanism and control system. This photovoltaic tracking support only needs a group of drive mechanism, can drive the photovoltaic board mounting bracket installed with photovoltaic board, carries out azimuth angle and pitch angle's control and adjustment simultaneously, makes the light -receiving surface of photovoltaic board can follow the sun direction deflection, keeps the sunlight with best incident angle irradiation photovoltaic board, improves the power generation efficiency, reduces system complexity and cost. This photovoltaic tracking support can be single frame independent drive operation, also can form the linkage row or array combination through the drive assembly linkage, concentrated drive synchronous operation, to adapt to different site environment and scale demand.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, specifically to a single-drive dual-axis linkage photovoltaic tracking bracket. Background Technology

[0002] With the continuous growth of global demand for renewable energy, solar power generation technology is developing rapidly. However, most existing centralized or distributed photovoltaic power plants use traditional fixed photovoltaic panel mounting brackets. This fixed installation method has low power generation efficiency and a low input-output ratio, resulting in waste of material costs and land resources. To improve the power generation efficiency of photovoltaic panels, photovoltaic tracking brackets have become one of the key technologies. Traditional photovoltaic tracking brackets usually require two or more sets of drive mechanisms to control the azimuth and pitch angles of the photovoltaic panels separately. This not only increases the complexity and cost of the system but also affects the stability and reliability of the system. Utility Model Content

[0003] The purpose of this invention is to solve the problems of existing dual-axis tracking brackets requiring multiple drive sources, having complex systems, and high costs, and to provide a single-drive dual-axis linkage photovoltaic tracking bracket that is different from existing technologies.

[0004] The structural principles and technical features of this invention will be set forth in part in the embodiments shown below, and will become apparent from the description or may be learned by practice of this invention.

[0005] The present invention provides a single-drive dual-axis linkage photovoltaic tracking bracket that can be used in distributed or centralized photovoltaic power stations.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A single-drive dual-axis linkage photovoltaic tracking bracket includes:

[0008] Columns;

[0009] Rotate the frame and hinge it to the top of the column via the orientation axis assembly;

[0010] The photovoltaic panel mounting frame is hinged to the top of the rotating frame via a pitch axis assembly;

[0011] The slide transmission mechanism is located on the side of the column;

[0012] Linkage bracket, connecting the slide table transmission mechanism and the photovoltaic panel mounting bracket;

[0013] The drive mechanism outputs drive torque to drive the slide transmission mechanism through the transmission components.

[0014] The control system controls the output torque of the drive mechanism.

[0015] The slide transmission mechanism converts the rotational motion of the drive mechanism into a semi-elliptical trajectory of curved oscillation, and drives the photovoltaic panel mounting frame to synchronously adjust the azimuth and pitch angles through the linkage bracket.

[0016] The column includes a column body and a slide transmission mechanism fixing part, wherein the slide transmission mechanism fixing part is located on the side of the column body and is used to house the slide transmission mechanism there.

[0017] The slide transmission mechanism includes an active slide mechanism, a passive slide mechanism, a transmission swing arm, and a universal hinge assembly;

[0018] The active slide mechanism includes a lead screw, an active slider, an active slider hinge shaft assembly, an active slider guide rail, and a frame. The passive slide mechanism includes a passive slider, a passive slider hinge shaft assembly, a passive slider guide rail, and a frame. The passive slide mechanism is perpendicular to the active slide mechanism and is orthogonally combined in a T-shape.

[0019] The active slider guide rail is fixed to the active slide mechanism, the passive slider guide rail is fixed to the passive slide mechanism, the passive slider guide rail is perpendicular to the active slider guide rail, and the intersection line of the two guide rail planes is located at the midpoint of the active slider stroke;

[0020] The lead screw is rotatably mounted on the active slide mechanism, and its axial center line is parallel to the symmetrical center line of the length of the active slider guide rail. Both ends or one end of the lead screw is provided with an axial end interface.

[0021] The active slider is mounted on the active slide mechanism and moves in coordination with the active slider guide rail and the lead screw.

[0022] The passive slider is mounted on the passive slide mechanism and slides in cooperation with the passive slider guide rail.

[0023] The transmission swing arm includes a main body of the transmission swing arm structure, a driving end of the transmission swing arm, a passive hinge area of ​​the transmission swing arm, and a swing end of the transmission swing arm.

[0024] The active end of the transmission swing arm is hinged to the active slider via the active slider hinge shaft assembly, and the passive hinge area of ​​the transmission swing arm is hinged to the passive slider via the passive slider hinge shaft assembly.

[0025] The universal hinge assembly is located at the swing end of the transmission arm.

[0026] The rotating frame includes a main rotating frame structure, an azimuth axis assembly, and a pitch axis assembly;

[0027] The rotating frame supports and hinges the photovoltaic panel mounting frame to the top of the column, allowing the photovoltaic panel mounting frame to rotate simultaneously along the pitch axis and the azimuth axis relative to the column.

[0028] The main shape of the rotating frame structure includes triangular, trapezoidal, rectangular and other polygonal support structures;

[0029] The azimuth axis assembly is located at the bottom of the rotating frame, and the bottom of the rotating frame is horizontally hinged to the top of the column. It bears the radial and axial loads between the rotating frame and the column, so that the rotating frame and the photovoltaic panel mounting frame can rotate relative to the column along the azimuth axis.

[0030] The pitch axis assembly is located on the top of the rotating frame, and the top of the rotating frame is hinged to the back surface of the photovoltaic panel mounting frame. It bears the radial and axial loads between the rotating frame and the photovoltaic panel mounting frame, so that the photovoltaic panel mounting frame can rotate relative to each other along the pitch axis.

[0031] The photovoltaic panel mounting frame includes a main support structure, a pitch axis hinge, and a linkage axis hinge, and is capable of mounting photovoltaic panel components on the sun-facing surface of the photovoltaic panel mounting frame.

[0032] The pitch axis hinge lug is located at the horizontal centerline of the backlight surface of the photovoltaic panel mounting frame and is hinged to the pitch axis assembly located at the top of the rotating frame.

[0033] The linkage shaft hinge ears are located on both sides of the vertical central axis above the horizontal central axis of the backlight surface of the photovoltaic panel mounting frame, and are hinged to the linkage bracket.

[0034] The linkage bracket includes a main bracket structure, a universal hinge connection part, and a linkage shaft assembly;

[0035] The main structure of the support includes a mechanical linkage structure that is connected in a "V" or "Y" shape or formed as a whole. Its form includes a fixed form or a telescopic and adjustable form. Support beams can be added inside the structure to increase stability.

[0036] The universal hinge connection is located at one end of the bottom intersection of the "V" or "Y" shaped structure of the linkage bracket, and is hinged to the swing end of the transmission arm through the universal hinge assembly.

[0037] The linkage shaft assembly is located on the top of the "V" or "Y" shaped structure of the linkage bracket and is hinged to the linkage shaft hinge lug located on the back surface of the photovoltaic panel mounting frame.

[0038] The drive mechanism includes a drive source and a transmission assembly;

[0039] The transmission assembly includes a drive shaft, a coupling, a transfer case, and a transfer case mounting bracket. The transmission assembly is used for power distribution and transmission when one or more photovoltaic tracking brackets are linked together.

[0040] The drive source is controlled by the control system, outputs a corresponding drive torque, and is connected to the axial end interface of the lead screw of the slide table transmission mechanism through the transmission component, thereby driving the slide table transmission mechanism to produce corresponding mechanical actions.

[0041] The photovoltaic tracking bracket can be driven independently as a single unit, or it can be linked together with transmission components to form a row or array combination for centralized synchronous operation.

[0042] When a single frame is driven independently, the drive source is directly connected to the axial end interface of the lead screw of the slide table transmission mechanism through a coupling, so as to drive a single photovoltaic tracking bracket to operate independently.

[0043] When multiple photovoltaic tracking brackets are driven in a centralized manner, the drive source distributes and transmits the drive torque to the slide transmission mechanism of multiple photovoltaic tracking brackets through the transmission component, and connects to the axial end interface of the lead screw to centrally drive the multiple photovoltaic tracking brackets to run synchronously.

[0044] The advantages and positive effects of this utility model are as follows:

[0045] 1. This utility model, through the coordinated arrangement of columns, rotating frames, photovoltaic panel mounting frames, linkage brackets, and drive mechanisms, and the innovative structural and mechanism design of the sliding table transmission mechanism as a key component for power transmission and power form conversion, enables the photovoltaic panel mounting frame with photovoltaic panels to be driven by only one drive source or drive structure. The azimuth and pitch angles of the photovoltaic panel can be adjusted simultaneously, allowing the sun-facing surface of the photovoltaic panel to follow the direction of the sun, maintaining the sunlight at the optimal incident angle to illuminate the photovoltaic panel, improving power generation efficiency, and effectively reducing the complexity and manufacturing and maintenance costs of the photovoltaic tracking bracket system.

[0046] 2. The photovoltaic tracking bracket of this utility model can be driven independently, or multiple photovoltaic tracking brackets can be hinged and linked together through the transmission component to form a row or array combination for centralized synchronous operation. This design provides greater economy, stability and flexibility. In practical applications, the appropriate drive combination can be selected according to different site conditions to adapt to different installation environments and scale requirements. Attached Figure Description

[0047] Figure 1 This is a three-dimensional structural schematic diagram of the photovoltaic tracking bracket shown in this embodiment (azimuth angle 0° south or midday sun direction, with maximum elevation angle).

[0048] Figure 2This is a three-dimensional structural schematic diagram of the photovoltaic tracking bracket shown in this embodiment (azimuth angle 45°-85° south of east or the sun's direction during the morning hours, with the elevation angle at or near its minimum).

[0049] Figure 3 yes Figure 1 A schematic diagram of the slide transmission mechanism of the photovoltaic tracking bracket;

[0050] Figure 4 yes Figure 2 A schematic diagram of the slide transmission mechanism of the photovoltaic tracking bracket;

[0051] Figure 5 yes Figure 1 A schematic diagram of the support column of a photovoltaic tracking bracket;

[0052] Figure 6 yes Figure 1 A schematic diagram of the rotating frame of the photovoltaic tracking bracket;

[0053] Figure 7 yes Figure 1 A schematic diagram of the photovoltaic panel mounting frame of the photovoltaic tracking bracket;

[0054] Figure 8 yes Figure 1 A schematic diagram of the linkage support of the photovoltaic tracking bracket;

[0055] Figure 9 This is a schematic diagram showing the location of the drive source and the connection method of the transmission components in a series-connected structure of multiple photovoltaic tracking brackets.

[0056] Figure 10 This is a schematic diagram of the distribution logic of the distribution box in a parallel array structure of multiple photovoltaic tracking brackets.

[0057] In the diagram: 1. Slide table transmission mechanism; 11. Lead screw; 111. Axial end interface of lead screw; 12. Driving slider; 121. Driving slider hinge shaft assembly; 122. Driving slider guide rail; 13. Passive slider; 131. Passive slider hinge shaft assembly; 132. Passive slider guide rail; 14. Transmission swing arm; 141. Driving end of transmission swing arm; 142. Passive hinge area of ​​transmission swing arm; 143. Swing end of transmission swing arm; 15. Universal hinge assembly;

[0058] 2. Column; 21. Lower fixed flange; 22. Fixing part of slide table transmission mechanism; 23. Upper fixed flange;

[0059] 3. Rotation frame; 31. Azimuth axis assembly; 32. Pitch axis assembly;

[0060] 4. Linkage bracket; 41. Universal hinge connection; 42. Linkage shaft assembly;

[0061] 5. Photovoltaic panel mounting bracket; 51. Pitch axis hinge lug; 52. Linkage axis hinge lug;

[0062] 6. Drive mechanism; 61. Drive source; 62. Transfer case; 63. Coupling; 64. Transfer case mounting bracket; 65. Drive shaft. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-10 A more comprehensive description of the embodiments is provided to further illustrate the present invention in detail. It should be understood that the specific embodiments described are only for explaining the present invention and should not be construed as limiting the present invention. Relative terms such as "upper," "middle," "lower," "far," "near," "front," "side," "active end," "passive hinge area," and "swinging end" are used in this specification to describe the relative positional or orientational relationship of one component of the icon to another component. These terms are used in this specification only for the convenience of describing the present invention and should not be construed as limiting the present invention. It should be understood that if the device in the icon is flipped upside down, the component described as "upper" will become the component described as "lower." When a structure is located "upper" of another structure, it may mean that some structures are integrally formed on other structures, or that a structure is directly set on other structures, or that a structure is indirectly set on other structures through another structure. When two structures with corresponding positional relationships are mechanically connected by a certain component, if a person skilled in the art changes only the position and quantity of the component without changing its working mechanism, it still falls within the protection scope of the present invention. The terms “one,” “multiple,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “have” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0064] This utility model provides a single-drive dual-axis linkage photovoltaic tracking bracket, hereinafter referred to as photovoltaic tracking bracket, which can be used in distributed or centralized photovoltaic power stations. The photovoltaic tracking bracket described in this embodiment can be driven independently or linked together in rows or arrays via transmission components for centralized synchronous operation. Figure 1 , Figure 2 , Figure 9 , Figure 10 ,in Figure 1 The image shows the photovoltaic panel mounting bracket of the photovoltaic tracking bracket facing south at 0° or towards the sun at midday, with the maximum pitch angle. Figure 2The diagram shows the photovoltaic panel mounting bracket of the photovoltaic tracking system facing south-east at an angle of 45°-85° or towards the sun during the morning hours, with the pitch angle at or near its minimum. Figure 9 This diagram illustrates a series-connected structure where multiple photovoltaic tracking brackets are hinged and linked together via a transmission assembly, driven centrally. Figure 10 This illustrates a parallel array structure formed by multiple photovoltaic tracking brackets that are hinged together by transmission components and driven centrally.

[0065] Reference Figure 1 , Figure 2 As shown, the photovoltaic tracking bracket described in this embodiment includes a sliding table transmission mechanism 1, a column 2, a rotating frame 3, a linkage bracket 4, a photovoltaic panel mounting frame 5, a drive mechanism 6, and a control system. The bottom of the column 2 is fixed to the ground or foundation structure at the lower fixing flange 21. The bottom of the rotating frame 3 is hinged to the upper fixing flange 23 of the column 2 via an azimuth shaft assembly 31. The pitch shaft hinge lug 51 at the horizontal center axis of the backlight surface of the photovoltaic panel mounting frame 5 is hinged to the pitch shaft assembly 32 at the top of the rotating frame 3. The sliding table transmission mechanism 1 is located at the sliding table transmission mechanism fixing part 22 on the side of the main body of the column 2. The upper part of the linkage bracket 4 is hinged to the linkage shaft hinge lug 52 at the top of the backlight surface of the photovoltaic panel mounting frame 5 via a linkage shaft assembly 42. The universal hinge connection part 41 at the bottom of the linkage bracket 4 is hinged to the swing arm swing end 143 of the sliding table transmission mechanism 1 via a universal hinge assembly 15.

[0066] Reference Figure 3 , Figure 4As shown, the slide transmission mechanism 1 of this embodiment includes an active slide mechanism, a passive slide mechanism, a transmission swing arm 14, and a universal hinge assembly 15. The active slide mechanism includes a lead screw 11, an active slider 12, an active slider hinge shaft assembly 121, an active slider guide rail 122, and a frame. The passive slide mechanism includes a passive slider 13, a passive slider hinge shaft assembly 131, a passive slider guide rail 132, and a frame. The passive slide mechanism is perpendicular to the active slide mechanism and orthogonally arranged in a T-shape. The active slider guide rail 122 is fixed to the frame of the active slide mechanism, and the passive slider guide rail 132 is fixed to the frame of the passive slide mechanism. The passive slider guide rail 132 is perpendicular to the active slider guide rail 122, and the intersection line of the two guide rail planes is located in the middle of the active slider guide rail 122. The lead screw 11 is rotatably mounted on the frame of the active slide mechanism, and the axial center line of the lead screw 11 is parallel to the symmetrical center line of the length of the active slider guide rail 122; the active slider 12 is mounted on the active slide mechanism and moves in coordination with the active slider guide rail 122 and the lead screw 11; the passive slider 13 is mounted on the passive slide mechanism and slides in coordination with the passive slider guide rail 132; the active end 141 of the transmission swing arm is hinged to the active slider 12 through the active slider hinge shaft assembly 121, the passive hinge area 142 of the transmission swing arm is hinged to the passive slider 13 through the passive slider hinge shaft assembly 131, and the swing end 143 of the transmission swing arm is hinged to the universal hinge connection part 41 located at the lower part of the linkage bracket 4 through the universal hinge assembly 15.

[0067] The lead screw 11 comprises a lead screw body, a lead screw axial end interface 111, and a matching circulator or nut, bearing, and fixing frame. Its structural form can be selected according to existing technology and standards, and is not specifically limited here. The function of the lead screw axial end interface 111 is to connect with the transmission component as an interface for inputting and / or outputting drive torque. Its connection method can be keyed connection, spline connection, forming connection, expansion sleeve connection, pin connection, set screw connection, etc., and can be selected according to existing technology without special limitation here. The function of the lead screw 11 is to convert rotational motion into linear motion, thereby driving the active slider 12 to reciprocate.

[0068] The active slider 12 comprises or is integrally formed with a lead screw circulator or nut, guide rail groove, bearing, and main structure. Its structural form can be selected according to existing technology and standards, and is not specifically limited here. The function of the active slider 12 is to cooperate with the lead screw 11 and the active slider guide rail 122 to convert the rotational motion into linear motion, and to rotate and hinge with the active end 141 of the transmission swing arm through the active slider hinge shaft assembly 121, thereby driving the active end 141 of the transmission swing arm to reciprocate.

[0069] The passive slider 13 comprises or is integrally formed with a guide rail groove, a bearing, and a structural body. Its structural form can be selected according to existing technologies and standards, and is not specifically limited here. Its function is to slide with the passive slider guide rail 132 and rotate and hinge with the passive hinge area 142 of the transmission arm through the passive slider hinge shaft assembly 131. When following the movement of the transmission arm 14, it plays a guiding, fixing, and load-bearing role at the passive hinge area 142 of the transmission arm.

[0070] The transmission swing arm 14 includes a main body, an active end 141, a passive hinge area 142, and a swing end 143. The cross-section of the main body includes geometric shapes such as square, I-shaped, C-shaped, and circular, and its structural length is either fixed or adjustable. The active end 141 is hinged to the active slider 12 via an active slider hinge shaft assembly 121, the passive hinge area 142 is hinged to the passive slider 13 via a passive slider hinge shaft assembly 131, and the swing end 143 is hinged to the universal hinge connection part 41 via a universal hinge assembly 15. The function of the transmission swing arm 14 is to transform the linear motion of the active slider 12 into a curved swing with a semi-elliptical trajectory at the swing end 143 through the guiding and fixing effect of the passive slider 13.

[0071] The active slider hinge shaft assembly 121 and the passive slider hinge shaft assembly 131 include shafts, bearings, fasteners, and seals, respectively disposed on the active slider 12 and the passive slider 13. Their function is to realize the relative movement and power transmission between the transmission swing arm 14 and the active slider 12 and the passive slider 13. Their types, specifications, and forms can refer to existing technologies and standards, and are not specifically limited here.

[0072] The universal hinge assembly 15 is a component that allows simultaneous displacement in the azimuth and pitch directions and enables variable-angle power transmission. It is located at the universal hinge connection part 41 at the lower part of the linkage bracket 4, and connects the linkage bracket 4 and the swing end 143 of the transmission arm of the slide table transmission mechanism 1 to achieve variable-angle power transmission between the two components. The structural form of the universal hinge assembly 15 includes ball cage type, cross shaft type, radial joint type and two-axis turntable type, which can be selected according to existing technology and standards, and no special limitation is made here.

[0073] The active slider guide rail 122 and the passive slider guide rail 132 can be screwed, welded, riveted, or integrally formed on the frame of the active slide mechanism and the passive slide mechanism; their structural forms include dovetail guide rails, V-shaped guide rails, roller guide rails, and cylindrical guide rails, which can be selected according to the usage environment, the size of the load to be borne, and other conditions, with reference to existing technologies and standards; their function is to cooperate with the active slider 12 and the passive slider 13 to guide, fix, and bear the load.

[0074] Through the detailed description of the positional relationship, structural form, and function of each component of the slide transmission mechanism 1, it should be understood that when the drive mechanism drives the lead screw 11 to rotate and pushes the active slider 12 to move, the passive slider 13, which is linked to it through the transmission swing arm 14, will move accordingly on the passive slide module. When the active slider 12 moves to the midpoint of its stroke, that is, the intersection point of the perpendicular foot of the passive slide module or the intersection point of the two guide rail planes, the passive slider 13 is at a distance from the center of the passive slide module. The term "stop point" should be understood as follows: the terms "far" and "near" used here refer to the "far" and "near" vertical distance of the passive slider 13 relative to the active slide module. When the active slider 12 moves to the stop point at either end of the active slide module, the passive slider 13 will be at the near stop point on the passive slide module. When the active slider 12 moves from one end of the active slide module to the other, the passive slider 13 will exhibit a movement trajectory from near to far and then back to near on the passive slide module. From this, the following points can be derived:

[0075] 1. When the active slider 12 moves, the passive hinge area 142 of the transmission swing arm can only reciprocate perpendicular to the direction of the active slide module due to the guiding and motion trajectory fixing effect of the passive slider 13. At the same time, the swing end 143 of the transmission swing arm will swing in a curved manner, presenting a corresponding semi-elliptical motion trajectory. During this process, the passive slider 13 also plays a role in fixing the trajectory of the center offset when the swing end 143 of the transmission swing arm swings in a curved manner; 2. The length of the lead screw 11 will determine the stroke of the passive slider 13. The distance, i.e., the travel distance of the passive slider 13 is half of the effective travel distance of the lead screw 11; 3. The travel distance of the passive slider 13 and the length of the transmission swing arm 14 will determine the radius of curvature of the elliptical trajectory when the swing end 142 of the transmission swing arm swings along the semi-elliptical motion trajectory curve (the larger the radius of curvature, the smaller the curvature of the curve at that point), which can also be understood as the length of the longest and shortest radii of the elliptical trajectory; By summarizing the above points, the trajectory of the swing end 142 of the transmission swing arm satisfies the elliptical equation x 2 / a 2 +y2 / b 2=1, where the major axis a is 1 / 2 of the effective stroke of the lead screw 11, and the minor axis b is determined by the length of the transmission swing arm 14. That is, the ratio between the length of the transmission swing arm 14 and the stroke of the lead screw 11 determines the elliptical trajectory parameters.

[0076] Referring to the accompanying drawings and the above detailed description and explanation of the slide transmission mechanism 1, it should be understood that the working mechanism of the slide transmission mechanism 1 in this embodiment is to convert the rotational torque output by the drive mechanism 6 into a semi-elliptical curve oscillation at the swing end 142 of the transmission swing arm, and drive the linkage bracket 4 and the photovoltaic panel mounting frame 5, which are hinged to it, through the universal hinge assembly 15, to generate corresponding mechanical actions, thereby realizing the control and adjustment of the azimuth and pitch angles of the photovoltaic panel mounting frame 5 on which the photovoltaic panel is mounted; and it should be further understood that during the corresponding drive adjustment process, the deflection amplitude and limiting position of the azimuth and pitch angles of the photovoltaic panel mounting frame 5 and the rotation speed can be determined by setting the effective stroke of the lead screw 11, i.e., setting the effective stroke of the passive slider 13, setting the hinge point position between the passive slider 13 and the transmission swing arm 14, and setting the length of the transmission swing arm 14.

[0077] The slide transmission mechanism 1 described in this embodiment is located at the slide transmission mechanism fixing part 22 on the side of the main body of the column 2. This location can prevent the photovoltaic panel mounting frame 5 from scraping or contacting it when it rotates. To avoid dust accumulation or rain, it can be set up upside down or equipped with a dustproof and rainproof cover.

[0078] Reference Figure 5 As shown, the column 2 in this embodiment includes a column body, a lower fixed flange 21, a slide transmission mechanism fixing part 22, and an upper fixed flange 23.

[0079] The main body of the column is a hollow or solid columnar structure, and its material includes metal and concrete. Its cross-section includes circular, square, and polygonal geometric shapes.

[0080] The lower fixed flange 21 is located at the bottom of the column body and may be provided with screw holes. Its function includes anchor bolt fastening, welding to fix it to the ground or foundation structure, or embedding the bottom of the column body into the ground or foundation structure for fixation.

[0081] The fixed part 22 of the slide table transmission mechanism can be provided on the side of the column body, and its function is to provide the slide table transmission mechanism 1 at that location.

[0082] The upper fixed flange 23 can be located on the top of the column body and can be provided with screw holes. Its function is to be fixedly connected to the orientation shaft assembly 31 by means of screw fastening and welding, thereby rotatably hinged to the top of the column 2.

[0083] Reference Figure 6 As shown, the rotating frame 3 in this embodiment includes a rotating frame structure body, an azimuth axis assembly 31, and a pitch axis assembly 32.

[0084] The main shape of the rotating frame structure includes triangular, trapezoidal, rectangular and other polygonal support structures, including metal profiles fastened with screws, welded, riveted or integrally formed.

[0085] The azimuth axis assembly 31 is located at the bottom of the main body of the rotating frame structure. Its function is to rotatably hinge the bottom of the rotating frame 3 to the top of the column 2, bear the radial and axial loads between the rotating frame 3 and the column 2, and realize that the rotating frame 3 and the photovoltaic panel mounting frame 5 can rotate relative to the column 2 along the azimuth axis. Its structural form includes a turntable bearing, a pressure bearing or a tapered roller bearing, which can be selected according to existing technology and standards, and no special limitation is made here.

[0086] The pitch axis assembly 32 can be located at both ends of the top of the rotating frame 3. Its function is to hinge the top of the rotating frame 3 with the pitch axis hinge lug 51 at the horizontal center axis of the back surface of the photovoltaic panel mounting frame 5, and bear the radial and axial loads between the rotating frame 3 and the photovoltaic panel mounting frame 5, so that the photovoltaic panel mounting frame 5 can rotate relative to each other along the pitch axis. Its structure may include a bearing mounting frame, bearing, fasteners and seals, which can be selected according to existing technology and standards, and are not specifically limited here.

[0087] The mechanism of the rotating frame 3 is to hinge the photovoltaic panel mounting frame 5 to the column 2, so that the azimuth and pitch angles of the photovoltaic panel mounting frame 5 can rotate simultaneously along the pitch axis and the azimuth axis relative to the column 2, thereby realizing that the azimuth axis and pitch axis of the photovoltaic tracking bracket can be rotated simultaneously by the driving traction force.

[0088] Reference Figure 7 As shown, the photovoltaic panel mounting frame 5 described in this embodiment includes a main frame of the photovoltaic panel mounting frame, a pitch axis hinge ear 51, and a linkage axis hinge ear 52.

[0089] The main frame of the photovoltaic panel mounting rack includes horizontal beams, vertical beams and diagonal braces that are fixedly connected or integrally formed, and its shape includes rectangles, squares, trapezoids and other polygonal geometric shapes.

[0090] The pitch axis hinge lug 51 can be provided on both sides of the horizontal central axis of the back surface of the photovoltaic panel mounting frame 5. The purpose of providing it here is to maintain the gravity balance of the photovoltaic panel mounting frame 5 and reduce the gravity load on the linkage bracket 4 and the slide transmission mechanism 1. Its form includes a protruding structure provided on or formed on the main frame of the photovoltaic panel mounting frame 5, or a hinge hole opened on the main frame of the photovoltaic panel mounting frame 5. Its function is to cooperate with the pitch axis assembly 32 provided on the top of the rotating frame 3 for hinge connection, and to move and support the photovoltaic panel mounting frame 5 on the top of the rotating frame 3.

[0091] The linkage shaft hinge ear 52 can be provided on both sides of the upper part of the backlight surface of the photovoltaic panel mounting frame 5. Its form includes a protruding structure provided on or formed on the main frame of the photovoltaic panel mounting frame 5, or a hinge hole opened on the main frame of the photovoltaic panel mounting frame 5. Its function is to cooperate with the linkage shaft assembly 42 provided on the upper part of the linkage bracket 4 for hinge connection.

[0092] The function of the photovoltaic panel mounting frame 5 is to place the photovoltaic panel assembly on the light-facing surface of the photovoltaic panel mounting frame 5, and to adjust its azimuth and pitch angles according to the control of the driving force, so as to keep the sunlight shining on the photovoltaic panel at the optimal incident angle.

[0093] It should be understood that the term "sun-facing side" as used herein refers to the side of the photovoltaic panel mounting frame 5 facing the sun, the term "sun-repelling side" as used herein refers to the side of the photovoltaic panel mounting frame 5 facing away from the sun, the term "upper part" as used herein refers to the position above the horizontal central axis of the photovoltaic panel mounting frame 5, not the top, and the term "both sides" as used herein refers to both sides of the vertical central axis of the photovoltaic panel mounting frame 5, not the two sides or the horizontal top.

[0094] Reference Figure 8 As shown, the linkage bracket 4 described in this embodiment includes a bracket main structure, a universal hinge connection part 41, and a linkage shaft assembly 42.

[0095] The main structure of the support frame is a mechanical linkage structure consisting of hollow or solid profiles connected in a "V" or "Y" shape or integrally formed. Lateral or diagonal supports can be added to the structure to increase its stability. The length / height of the main structure of the support frame can be fixed or telescopically adjustable. The purpose of using a telescopically adjustable form is that the solar altitude angle changes with the seasons throughout the year. Therefore, the length of the linkage support frame 4 can be adjusted according to the solar altitude angle to help optimize the tilt angle of the photovoltaic panel mounting frame 5.

[0096] The universal hinge connection part 41 is located or formed at one end of the bottom connection point of the “V” or “Y” shaped structure. Its function is to fix the universal hinge assembly 15 at this point and to hinge it to the swing end 143 of the transmission arm of the slide table transmission mechanism 1.

[0097] The linkage shaft assembly 42 is located at the top or both ends of a "V"-shaped or "Y"-shaped structure. Its structure may include a bearing mounting bracket, bearing, fasteners, and seals, and can be selected according to existing technologies and standards, without special limitations. Its function is to be hinged to the linkage shaft hinge lug 52 on the backlight surface of the photovoltaic panel mounting frame 5 via bolts or pins. The linkage bracket 4 transmits the driving torque output from the swing end 143 of the transmission arm to the photovoltaic panel mounting frame 5, supporting and driving the photovoltaic panel mounting frame 5 to produce corresponding mechanical movements.

[0098] The drive mechanism 6 described in this embodiment includes a drive source 61 and a transmission assembly; the transmission assembly includes a drive shaft 65, a coupling 63, a transfer case 62 and a transfer case fixing frame 64, and the transmission assembly is used for power distribution and transmission when a single or multiple photovoltaic tracking brackets are linked.

[0099] When a single photovoltaic tracking bracket is driven independently, the drive source 61 is directly connected to the lead screw axial end interface 111 of the slide table transmission mechanism 1 through the coupling 63, so as to drive the single photovoltaic tracking bracket to operate independently.

[0100] When multiple photovoltaic tracking brackets are driven synchronously in a coordinated manner, the drive source 61 distributes and transmits the driving torque to the slide transmission mechanism 1 of the multiple photovoltaic tracking brackets through the transmission component, and connects to the lead screw axial end interface 111 to centrally drive the multiple photovoltaic tracking brackets to run synchronously.

[0101] The linkage structure of multiple photovoltaic tracking brackets includes a series row structure and a parallel array structure.

[0102] The tandem row structure includes two forms:

[0103] Form 1: The drive source 61 is located on the photovoltaic tracking bracket at one end of the row, and the lead screw axial end interface 111 of the adjacent photovoltaic tracking brackets are connected end to end through the drive shaft 65.

[0104] Form 2: The drive source 61 is located in the row, and the torque is distributed to both sides through the transfer box 62. The lead screw axial end interfaces 111 of the adjacent photovoltaic tracking brackets on both sides are connected end to end through the drive shaft 65.

[0105] Parallel array structure: The drive source 61 is located in the middle or on one side of the array, and synchronously drives multiple sets of linked structures through the transmission shaft 65 and the multi-set drive box 62.

[0106] The types of drive source 61 include electric motors, combinations of electric motors and reducers, and hydraulic motors. For specific details, please refer to the existing technology, and no special limitations are made here.

[0107] The function of the transfer case 62 is to distribute and transmit the driving torque output by the drive source 61 to multiple photovoltaic tracking brackets. Its structural form includes an equal torque distribution gearbox structure with 2-4 sets of output shafts.

[0108] The function of the coupling 63 is to connect the two shafts at the mechanism connection point when the two shafts are not on the same axis and there is an included angle between the axes, so that they can rotate together and transmit torque. Its structural forms include cross shaft type, ball cage type and ball fork type, and telescopic splines can be provided at both ends. It can be selected according to existing technology and standards, and no special limitation is made here.

[0109] The function of the transfer case mounting bracket 64 is to fix the drive source 61 and the transfer case 62 to the ground or foundation structure; its main body can be a hollow or solid column structure made of metal or concrete, and the bottom can be fixed to the ground or foundation structure by anchor bolts, or embedded in the ground and fixed by pouring concrete.

[0110] The function of the drive shaft 65 is to transmit driving torque. Its material and form include a hollow or solid metal cylinder, including spline telescopic or fixed types. Its length and load-bearing capacity can be determined according to the site environment and the magnitude of the transmitted torque.

[0111] The function of the drive mechanism 6 is to be controlled by the control system, output the corresponding drive torque, and transmit the drive torque to the slide transmission mechanism 1 and associated mechanism of one or more photovoltaic tracking brackets through the transmission component, so as to control and adjust the pitch angle and azimuth angle of the photovoltaic panel mounting frame 5.

[0112] The control system described in this embodiment includes a computer, a user interface, a controller, sensors, actuators, a communication network, a power supply, and software. Its function is to collect and analyze system information such as illumination angle, mechanism status, and environmental status, or to generate control commands to control the deflection angle of the photovoltaic panel mounting frame 5 according to operation instructions and preset data, and to control the drive mechanism 6 to output the corresponding drive torque.

[0113] Based on the detailed explanation of the positional relationship, structural form, and function of each structural component of the photovoltaic tracking bracket described in this embodiment, the mechanism principle of the photovoltaic tracking bracket is as follows: When the control system analyzes and generates a value for adjusting the deflection angle of the photovoltaic panel mounting bracket 5 based on the collected information such as the illumination angle, mechanism status, and environmental conditions, or based on the operation instructions and preset data, it then controls the drive source 61 to output the corresponding drive torque, and transmits the drive torque to the slide transmission mechanism 1 of one or more photovoltaic tracking brackets through the transmission component. The slide transmission mechanism 1 then converts the drive rotation torque into a curved oscillation of a semi-elliptical motion trajectory at the swing end 143 of the transmission arm. Due to the light... The backlight surface of the photovoltaic panel mounting frame 5 is hinged to the column 2 via the rotating frame 3. The photovoltaic panel mounting frame 5 can rotate simultaneously along the azimuth axis and the pitch axis relative to the column 2. The upper part of the backlight surface of the photovoltaic panel mounting frame 5 is hinged to the swing end 143 of the transmission swing arm via the linkage bracket 4. Therefore, when the swing end 143 of the transmission swing arm swings along a semi-elliptical motion trajectory, the photovoltaic panel mounting frame 5, supported and driven by the linkage bracket 4, causes its azimuth angle and pitch angle to deflect accordingly. This allows one or more photovoltaic tracking brackets equipped with photovoltaic panels to be driven by only one set of drive mechanisms, enabling them to rotate synchronously along the dual axes following the sun's direction and operate automatically and stably.

Claims

1. Single drive dual axis linkage photovoltaic tracking support, characterized in that, include: Column (2); Rotate the frame (3) and hinge it to the top of the column (2) via the orientation axis assembly (31); The photovoltaic panel mounting bracket (5) is hinged to the top of the rotating frame (3) via the pitch axis assembly (32); The slide transmission mechanism (1) is located on the side of the column (2); Linkage bracket (4) connects the slide table transmission mechanism (1) and the photovoltaic panel mounting bracket (5); The drive mechanism (6) outputs drive torque to drive the slide transmission mechanism (1) through the transmission component. The control system controls the output torque of the drive mechanism (6); The sliding table transmission mechanism (1) converts the rotational motion of the drive mechanism (6) into a semi-elliptical trajectory of curved oscillation, and drives the photovoltaic panel mounting frame (5) to adjust the azimuth and pitch angles synchronously through the linkage bracket (4).

2. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The column (2) includes a column body and a slide transmission mechanism fixing part (22), wherein the slide transmission mechanism fixing part (22) is located on the side of the column body and is used to place the slide transmission mechanism (1) there.

3. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The slide transmission mechanism (1) includes an active slide mechanism, a passive slide mechanism, a transmission swing arm (14), and a universal hinge assembly (15). The active slide mechanism includes a lead screw (11), an active slider (12), an active slider hinge shaft assembly (121), an active slider guide rail (122), and a frame. The passive slide mechanism includes a passive slider (13), a passive slider hinge shaft assembly (131), a passive slider guide rail (132), and a frame. The passive slide mechanism is perpendicular to the active slide mechanism and is orthogonally combined in a T-shape.

4. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 3, characterized in that, The active slider guide rail (122) is fixed on the active slide mechanism, the passive slider guide rail (132) is fixed on the passive slide mechanism, the passive slider guide rail (132) is perpendicular to the active slider guide rail (122), and the intersection line of the two guide rail planes is located at the midpoint of the stroke of the active slider (12); The lead screw (11) is rotatably mounted on the active slide mechanism, and its axial center line is parallel to the symmetrical center line of the length of the active slider guide rail (122). Both ends or one end of the lead screw is provided with an axial end interface (111). The active slider (12) is mounted on the active slide mechanism and moves in coordination with the active slider guide rail (122) and the lead screw (11); The passive slider (13) is mounted on the passive slide mechanism and slides in cooperation with the passive slider guide rail (132); The transmission swing arm (14) includes a main body of the transmission swing arm structure, an active end of the transmission swing arm (141), a passive hinge area of ​​the transmission swing arm (142), and a swing end of the transmission swing arm (143). The active end (141) of the transmission arm is hinged to the active slider (12) through the active slider hinge shaft assembly (121), and the passive hinge area (142) of the transmission arm is hinged to the passive slider (13) through the passive slider hinge shaft assembly (131). The universal hinge assembly (15) is located at the swing end (143) of the transmission arm.

5. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The rotating frame (3) includes a rotating frame structure body, an azimuth axis assembly (31), and a pitch axis assembly (32). The rotating frame (3) supports and hinges the photovoltaic panel mounting frame (5) to the top of the column (2), so that the photovoltaic panel mounting frame (5) can rotate relative to the column along both the pitch axis and the azimuth axis.

6. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 5, characterized in that, The main shape of the rotating frame structure includes triangle, trapezoid, and rectangle; The azimuth axis assembly (31) is located at the bottom of the rotating frame (3), and the bottom of the rotating frame (3) is horizontally hinged to the top of the column (2), bearing the radial load and axial load between the rotating frame (3) and the column (2), so that the rotating frame (3) and the photovoltaic panel mounting frame (5) can rotate relative to the column along the azimuth axis. The pitch axis assembly (32) is located on the top of the rotating frame (3), and the top of the rotating frame (3) is hinged to the back surface of the photovoltaic panel mounting frame (5). It bears the radial load and axial load between the rotating frame (3) and the photovoltaic panel mounting frame (5), so that the photovoltaic panel mounting frame (5) can rotate relative to each other along the pitch axis.

7. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The photovoltaic panel mounting frame (5) includes a main support structure for the photovoltaic panel mounting frame, a pitch axis hinge (51), and a linkage axis hinge (52), and is capable of placing the photovoltaic panel assembly on the sun-facing surface of the photovoltaic panel mounting frame (5). The pitch axis hinge (51) is located at the horizontal centerline of the back surface of the photovoltaic panel mounting frame (5) and is hinged to the pitch axis assembly (32) located at the top of the rotating frame (3). The linkage shaft hinge ear (52) is located on both sides of the vertical central axis above the horizontal central axis of the backlight surface of the photovoltaic panel mounting frame (5), and is hinged to the linkage bracket (4).

8. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The linkage bracket (4) includes a main bracket structure, a universal hinge connection part (41), and a linkage shaft assembly (42). The main structure of the support includes a mechanical linkage structure that is connected in a "V" or "Y" shape or formed as a whole. Its form includes a fixed form or a telescopic and adjustable form. Support beams can be added inside the structure to increase stability. The universal hinge connection part (41) is located at one end of the bottom intersection of the "V" or "Y" shaped structure of the linkage bracket (4), and is hinged to the swing end (143) of the transmission arm through the universal hinge assembly (15); The linkage shaft assembly (42) is located on the top of the "V" or "Y" shaped structure of the linkage bracket (4) and is hinged to the linkage shaft hinge ear (52) located on the back surface of the photovoltaic panel mounting frame (5).

9. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 1, characterized in that, The drive mechanism (6) includes a drive source (61) and a transmission assembly; The transmission assembly includes a drive shaft (65), a coupling (63), a transfer case (62), and a transfer case mounting bracket (64). The transmission assembly is used for power distribution and transmission when a single or multiple photovoltaic tracking brackets are linked together. The drive source (61) is controlled by the control system, outputs a corresponding drive torque, and is connected to the lead screw axial end interface (111) of the slide table transmission mechanism (1) through the transmission component, driving the slide table transmission mechanism (1) to produce a corresponding mechanical action.

10. The single-drive dual-axis linkage photovoltaic tracking bracket according to claim 9, characterized in that, The photovoltaic tracking bracket can be driven independently as a single unit, or it can be linked together with transmission components to form a row or array combination for centralized synchronous operation. When a single frame is driven independently, the drive source (61) is directly connected to the lead screw axial end interface (111) of the slide table transmission mechanism (1) through the coupling (63) to drive the single photovoltaic tracking bracket to operate independently. When multiple photovoltaic tracking brackets are driven in a centralized manner, the drive source (61) distributes the drive torque to the slide transmission mechanism (1) of the multiple photovoltaic tracking brackets through the transmission component, and connects to the lead screw axial end interface (111) to drive the multiple photovoltaic tracking brackets to run synchronously.

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