Double-shaft tracking support and control system thereof

Abstract

The utility model relates to the field of photovoltaic support application, in particular to a double-shaft tracking support and a control system thereof, the double-shaft tracking support comprises a stand column, a speed reducer, a driving motor and a fixing frame, the speed reducer comprises a gear box, a horizontal first output shaft, a vertical second output shaft, a first input shaft and a second input shaft, and the first output shaft, the vertical second output shaft, the first input shaft and the second input shaft are arranged in the gear box; the two ends of the first output shaft are fixedly connected with one end of a rotating main shaft respectively, and the first output shaft and the rotating main shaft are basically coaxial; the lower end of the second output shaft is fixedly connected with the upper end of the stand column. In the photovoltaic double-shaft tracking bracket, the rotating main shaft of the fixed frame is divided into two sections which are fixedly connected with the horizontal rotating shaft respectively, so that the influence of a gear box of the speed reducer on the arrangement of the rotating main shaft is avoided, the distance between the gravity centers of the photovoltaic panel and the fixed frame and the rotating shaft is relatively small, and the generated torque is relatively small; and the pitching angle of the photovoltaic panel can be rotated at a large angle, and the photovoltaic panel can be rotated by 80 degrees and even 90 degrees.

Description

Technical Field

[0001] The utility model relates to the application field of photovoltaic brackets, in particular to a dual-axis tracking bracket and a control system thereof. Background Art

[0002] With the development of clean energy, global photovoltaic capacity will continue to grow rapidly. The installation of solar photovoltaic panel mounts and the photovoltaic panel's photoelectric conversion efficiency have become two key areas of focus for the industry. Existing solar photovoltaic panel mounts include fixed mounts and tracking mounts. The most common tracking mount is a flat single-axis tracker, which only tracks the changing angle of the sun's rise and set throughout the day. While flat single-axis trackers can improve the solar photoelectric conversion efficiency compared to fixed mounts, there is still room for improvement.

[0003] Chinese invention patent CN117013935A discloses a dual-axis solar tracking bracket that tracks the sun's azimuth angle via a rotary drive device mounted on a column; a push rod positioned between the rotating main axis and the column tracks the sun's altitude angle. This dual-axis solar tracking bracket can track changes in the sun's azimuth and elevation angles, increasing the effective area facing the sun. However, the push rod tracking limits the angular rotation of the photovoltaic panel. Larger angles can easily cause the push rod to become locked. Furthermore, windy conditions can easily cause the bracket to vibrate, or even resonate, damaging the push rod.

[0004] Chinese utility model patent CN220896608U discloses a novel dual-axis tracking power generation system. The system features a horizontal slewing adjustment assembly and a pitch adjustment assembly at the top of the base. The pitch adjustment assembly is equipped with a fixing member that secures the umbrella-shaped support. Because the center of gravity of the umbrella-shaped support and the photovoltaic panel is relatively far apart relative to the rotational joint, and the horizontal slewing adjustment assembly and the pitch adjustment assembly are bolted together, significant torque is generated between the adjustment assemblies. This reduces the area of ​​photovoltaic panels that can be supported on a single column, resulting in relatively high manufacturing and maintenance costs. The system is also unable to withstand rain, snow, and strong winds. When the photovoltaic panel is at a large angle, the large center of gravity deviation places a heavy load on the motor, making it susceptible to damage. Furthermore, the control system incorporates an astronomical algorithm, or longitude and latitude algorithm. The pitch and rotation angles determined by the algorithm based on the current longitude and latitude, as well as the date and time, are not adaptable to changes in geographical and weather conditions, resulting in low tracking accuracy. This results in low overall economic benefits and hinders widespread adoption. Summary of the Invention

[0005] In response to one or more problems in existing dual-axis photovoltaic tracking brackets, such as the center of gravity of the photovoltaic panel is higher than the center of the angle adjustment device, the rotation angle of the photovoltaic panel is limited, and the structure is not stable enough, the utility model provides a dual-axis tracking bracket; in order to further improve the conversion efficiency of the photovoltaic panel, the application also provides a control system for the dual-axis tracking bracket.

[0006] The utility model provides a dual-axis tracking bracket, including a column, a reducer, a drive motor and a fixed frame, the reducer including a gear box and a first horizontal output shaft, a second vertical output shaft and a first input shaft and a second input shaft arranged in the gear box; the drive motor includes a first drive motor and a second drive motor that respectively drive the first input shaft and the second input shaft, and the fixed frame includes a rotating main shaft; the two ends of the first output shaft are respectively fixedly connected to one end of a rotating main shaft, and the first output shaft is basically coaxial with the rotating main shaft; the lower end of the second output shaft is fixedly connected to the upper end of the column; the first drive motor drives the first output shaft to rotate, driving the first output shaft to rotate, so that the fixed frame rotates; the second drive motor drives the second input shaft to rotate, driving the second output shaft to rotate, so that the reducer rotates.

[0007] In the photovoltaic dual-axis tracking bracket, the utility model divides the rotating main shaft of the fixed frame into two sections, each of which is fixedly connected to a horizontal rotating shaft. This avoids the influence of the gearbox of the reducer on the setting of the rotating main shaft, so that the center of gravity of the photovoltaic panel and the fixed frame is closer to the rotating shaft, and the torque generated is smaller. Therefore, it is possible to set up a large area of ​​photovoltaic panels on a single column, and the pitch angle of the photovoltaic panel can be rotated to a large angle, such as 80° or even 90°. Therefore, it can avoid heavy snow and rain, and can also adapt to strong winds, reducing the impact of the natural environment on the tracking bracket. At the same time, by directly mounting and fixing the second output shaft to the column, the torque is transmitted to the column through the second output shaft, which can reduce the force acting on the gearbox and reduce the cost of the reducer, thereby realizing the promotion and application of photovoltaic panel dual-axis tracking.

[0008] Preferably, the gearbox includes a first housing and a second housing, and the first housing and the second housing are formed as one body; the first output shaft is provided with a first turbine, the first input shaft is provided with a worm engaged with the first turbine, the first output shaft is located in the first housing, and both ends extend out and are fixedly connected to the rotating main shaft; the second output shaft is provided with a second turbine, and the second input shaft is provided with a worm engaged with the second turbine; the second output shaft is located in the second housing, and its lower end extends out and is fixedly connected to the mounting seat at the upper end of the column.

[0009] In the present utility model, the first box body and the second box body form an integral part, and are firmly connected by casting, forging, welding, etc., which is more secure than the connection by bolts or mutual rotation of the two in the prior art. The lower end of the second output shaft extends out and is fixedly connected to the mounting seat at the upper end of the column. After the reducer and the photovoltaic panel thereon are installed, they are directly lifted and installed on the column, which is very convenient to install.

[0010] Preferably, a fixing flange is provided at the bottom of the column, a mounting hole is provided in the middle of the mounting seat, the lower end of the second output shaft is the second output end, and the second output end is inserted into the mounting hole to form a fixed connection.

[0011] The utility model is very convenient and quick to install the shaft hole, reducing the outdoor installation measures of the photovoltaic bracket and photovoltaic panel. At the same time, the fixed flange is provided, and the column installation is also quick.

[0012] Preferably, the first housing includes a protruding first turbine housing, and the first turbine is located in the first turbine housing; the second housing includes a protruding second turbine housing, and the second turbine is located in the second turbine housing, and a plurality of ribs are provided between the first housing and the second turbine housing.

[0013] The second turbine housing protrudes and is connected to the first housing to form a larger contact area. At the same time, combined with the ribs, the first housing and the second housing are firmly connected. The protruding housing can also accommodate a larger turbine, resulting in better transmission effect.

[0014] Preferably, a first cylinder is provided below the first turbine housing; a second cylinder is provided on one side of the second turbine housing; the first input shaft is provided in the first cylinder, and the second input shaft is provided in the second cylinder, which are respectively engaged with the first turbine and the second turbine worm gear for transmission, and the two ends of the first cylinder and the second cylinder are fixedly connected to form a support.

[0015] In the utility model, a cylinder is provided on the side of the turbine housing, and a worm is placed in the cylinder to engage with the turbine for transmission, which not only facilitates the installation of the worm and the drive motor, but also enables the cylinder to form support.

[0016] Preferably, an end plate is provided at the upper end of the second housing, a ball groove is provided at the upper end of the second output shaft, a steel ball is provided in the ball groove, and the steel ball is positioned between the end plate and the second output shaft.

[0017] The utility model effectively transmits the gravity acting on the reducer to the second output shaft and then to the column through the cooperation of the end plate and the steel ball. The steel ball is more stable and has low cost.

[0018] Preferably, the rotating main shaft is a straight tube with a mounting plate provided at the end, the mounting plate comprising a connecting plate and a coupling column protruding from the center of the connecting plate, and the first output end is inserted into the coupling hole for fixed connection.

[0019] In the utility model, the rotating main shaft is provided with a mounting plate, which is convenient for installation and fixing.

[0020] Preferably, the fixing frame also includes a longitudinal rod, a secondary rod and a purlin, and the other ends of the two rotating main shafts are respectively connected to the longitudinal rods to form an "I" shape; the two ends of the longitudinal rod are respectively connected to the transverse secondary rods, and the purlins are fixed on the longitudinal rods and the secondary rods for fixing the photovoltaic panels.

[0021] In the present invention, the arrangement of the longitudinal rods, auxiliary rods and purlins makes the overall center of gravity of the photovoltaic panel relatively low after installation, and basically forms a symmetrical structure, thereby reducing force deviation and torque.

[0022] The present utility model also provides a control system for a dual-axis tracking bracket, including a dual-axis tracking bracket and a control device. The control device includes a light sensor and a sub-controller. The light sensor is electrically connected to the sub-controller, and the light sensor is installed on the frame of the photovoltaic panel. The sub-controller receives light intensity information from the light sensor and outputs a signal to control the drive motor.

[0023] The utility model sets a light sensor, controls the driving motor according to the light information, and adjusts the angle of the photovoltaic panel, so that the photovoltaic panel can track the sun more accurately. At the same time, it can avoid the deviation of the verticality of the column caused by the terrain and installation, which makes the tracking inaccurate, and can maximize the

[0024] Preferably, the light sensor includes four photosensitive diodes, which are respectively arranged at four positions of the light-shielding column, and the four photosensitive diodes respectively output light-sensitive signals according to the shielding of the light-shielding column.

[0025] The utility model can calculate the angle deviation through the difference in light intensity received by the photosensitive diodes in four directions, and the sub-controller controls the driving motor to correct the deviation.

[0026] Preferably, the sub-controller includes a power supply system, an address dip switch, a motor drive module, and a data transceiver module, wherein the address dip switch is used to mark the address of the sub-controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the photovoltaic tracking system structure;

[0028] Figure 2 This is a schematic diagram of the horizontal position of the photovoltaic tracking system fixed frame;

[0029] Figure 3 This is a schematic diagram of the control structure of the photovoltaic tracking system;

[0030] Figure 4 This is a schematic diagram of the photovoltaic tracking bracket structure;

[0031] Figure 5 This is a schematic diagram of the structure of another photovoltaic tracking bracket;

[0032] Figure 6 Schematic diagram of the pitch angle change of the photovoltaic tracking bracket Figure 1 ;

[0033] Figure 7 Schematic diagram of the pitch angle change of the photovoltaic tracking bracket Figure 2 ;

[0034] Figure 8 Schematic diagram of the azimuth angle change of the photovoltaic tracking bracket Figure 1 ;

[0035] Figure 9 Schematic diagram of the azimuth angle change of the photovoltaic tracking bracket Figure 2 ;

[0036] Figure 10 for Figure 4 Schematic diagram of the enlarged view of part A in the middle;

[0037] Figure 11 It is a schematic diagram of the reducer structure;

[0038] Figure 12 This is a schematic diagram of the main structure of the reducer;

[0039] Figure 13 for Figure 11 Cross-sectional view in the middle DD direction;

[0040] Figure 14 for Figure 11 Cross-sectional view in CC direction;

[0041] Figure 15 for Figure 11 Cross-sectional view in the EE direction;

[0042] Figure 16 It is a light sensor.

[0043] The following are marked in the figure:

[0044] 100-Tracking bracket;

[0045] 1- column; 11- fixed flange; 12- mounting base; 121- fixed plate; 123- mounting column;

[0046] 2-reducer; 20-gearbox; 21-first housing; 22-second housing; 211-first output shaft housing; 212-first turbine housing; 213-first cylinder; 214-first end cover; 2141-flange connection plate; 2142-sealing groove; 2143-center through hole; 2144-bearing support; 2145-oil seal; 221-second output shaft housing; 222-second turbine housing; 223-second cylinder; 2 24-second end cover; 2251-end plate; 23-worm gear transmission assembly; 231-first output shaft; 2311-first output end; 232-first turbine; 233-first input shaft; 234-second output shaft, 2341-second output end; 2342-steel ball; 2343-pad; 235-second turbine; 236-second input shaft; 24-first drive motor; 25-second drive motor; 26-reinforcement rib ( Figure 11 Modified); 271-first bearing; 272-second bearing; 273-third bearing;

[0047] 3-fixed frame; 31-rotating spindle; 311-mounting plate; 312-connecting plate; 313-coupling column; 314-coupling hole; 32-longitudinal rod; 33-auxiliary rod; 34-purlin; 35-diagonal brace.

[0048] 4-photovoltaic panel; 5-light sensor; 53-photodiode; 531-shading column; 6-sub-controller. DETAILED DESCRIPTION

[0049] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature. Example

[0054] like Figure 1-8 As shown, a photovoltaic tracking bracket 100 includes a column 1, a reducer 2, a drive motor, and a mounting bracket 3 for photovoltaic panels. A fixing flange 11 is welded to the bottom end of the column 1 for securing it to the ground or a precast pile. The reducer 2 is mounted at the bottom end of the column 1 and connected to the mounting bracket 3 at the top. The mounting bracket 3 is then mounted on top of the photovoltaic panel 4.

[0055] Reducer 2 includes a gearbox 20, within which is housed a worm gear assembly 23, serving as a rotational transmission reducer for driving the fixed support. The worm gear assembly 23 has high transmission efficiency and reverse self-locking features, preventing vibrations from the fixed support and photovoltaic panels from impacting the motor.

[0056] The gearbox 20 includes a first housing 21 and a second housing 22 , which are fixed to form an integral piece, including welding, integral casting, forging, 3D printing, etc. to form an integral structure.

[0057] The first housing 21 comprises a first output shaft housing 211 extending through the left and right sides of the housing, a first turbine housing 212, and first end caps 214 fixed to the left and right ends of the first housing 21, sealing the interiors of the first output shaft housing 211 and the first turbine housing 212. The diameter of the first turbine housing 212 is larger than that of the first output shaft housing 211, and the two are connected by a circular bevel transition. The first end cap 214 includes a flange connection plate 2141 fixed to the first output shaft housing 211 and an inwardly protruding annular sealing groove 2142. A sealing ring or other sealing member is disposed within the sealing groove 2142, forming a seal between the first end cap 214 and the first output shaft housing 211.

[0058] The first end cap 214 has a central through-hole 2143 at its center, through which the output shaft passes. Bearing supports 2144 are located on the inner side of the periphery of central through-hole 2143, for mounting and securing the bearing. Oil seals 2145 are located directly between central through-hole 2143 and the output shaft. Several evenly spaced support ribs are located directly between the seal groove 2142 and the bearing supports 2144.

[0059] The second housing 22 includes a second output shaft housing 221 and a second turbine housing 222. A second end cap 224 is provided at the lower end of the second output shaft housing 221. The upper end of the second output shaft housing 221 is integrally connected to the first output shaft housing 211. Several reinforcing ribs 26 are arranged at the junction of the first output shaft housing 211 and the second output shaft housing 221, connecting the housing to the second turbine housing 222. The first housing 21 and the second end cap 224 are fixedly connected by bolts or other means. The structure of the second end cap 224 can be substantially identical to that of the first end cap 214, including a central through-hole, a sealing groove, and a bearing support.

[0060] The inner cavity of the first output shaft housing 211 can be connected to the inner cavity of the second output shaft housing 221, or of course, it can also be non-connected. When the two are connected, the inner cavities can form an integrated lubrication structure. However, the present invention preferably has the upper end of the second output shaft housing 221 closed and non-connected. A boss (not shown) is provided at the upper portion of the cavity of the second output shaft housing 221, which is inserted into the inner cavity of the first output shaft housing 211, making the reducer 2 more secure. A fixed bearing for the second output shaft 234 is provided in the boss. The first output shaft housing 211 and the second output shaft housing 221 are each provided with an oil delivery hole 28, which is sealed by bolts.

[0061] The diameter of the turbine housing is larger than the diameter of the output shaft housing, and the turbine housing protrudes from the output shaft housing.

[0062] The worm gear transmission assembly 23 includes a first output shaft 231 arranged horizontally, a first turbine 232 arranged on the first output shaft 231, and a first input shaft 233 with a worm engaged with the first turbine 232; it also includes a second output shaft 234 arranged vertically, a second turbine 235 arranged on the second output shaft 234, and a second input shaft 236 with a worm engaged with the second turbine 235.

[0063] The first output shaft 231 passes through the first output shaft housing 211 and the first turbine housing 212, extending through the central through-holes of the first end caps 214 at both ends. The first output shaft 231 is horizontally disposed, with first bearings 271 positioned near each end of the first output shaft 231, secured to the first output shaft housing 211 and the first turbine housing 212, respectively. The first turbine 232 is positioned in the first turbine housing 212 and secured to the first output shaft 231. The first output shaft 231 is secured to the turbine housing 212 outside the first turbine 232 via another first bearing 271. The first output shaft 231 is rotatably connected to the first housing 21 via the first bearings 27. A first drive motor 24 is secured to the underside of the first turbine housing 212. The output shaft of the first drive motor 24 is in driving connection with the first input shaft 233. Rotation of the first drive motor 24 drives rotation of the first input shaft 233, which then engages with the first turbine 232, driving rotation of the first turbine 232 and, in turn, rotating the first output shaft 231. Two ends of the first output shaft 231 extend out of the cover plate 214 to form two first output ends 2311 for driving the fixing frame 3 to change its pitch angle.

[0064] The upper end of the second output shaft housing 221 is integrally formed and fixedly connected to the first output shaft housing 211 , including forming an integrated structure by welding, integral casting, forging, 3D printing and other molding technologies.

[0065] The second output shaft 234 is located vertically within the cavity of the second output shaft housing 221 and the second turbine housing 222. The second turbine 235 is disposed within the second turbine housing 222 and is fixedly connected to the second output shaft 234. The second input shaft 236 engages with the second turbine 235. A second drive motor 25 is fixed to the outside of the second turbine housing 222, which drives the second input shaft 236 to rotate.

[0066] The driving shaft of the second driving motor 25 drives the second input shaft 236 to rotate, and the second input shaft 236 engages with the second turbine 235 to drive the second turbine 235 to rotate, thereby driving the second output shaft 234 to rotate. One end of the second output shaft 234 extends out of the second cover plate 224 under the second turbine housing 222 to form a second output end 2341, driving the reducer 2 to rotate relative to the column 1, thereby changing the azimuth angle of the fixing frame 3 and the photovoltaic panel 4 installed thereon.

[0067] The driving motor of the present invention can be a motor or a motor reducer, etc., which are electric driving mechanisms used in the mechanical field.

[0068] The second output shaft 234 bears the weight of the fixing frame 3 and the photovoltaic panel 4, and is subjected to a large force in the vertical direction. Therefore, the upper end of the second output shaft housing 221 is preferably closed, and the boss is an upward extension of the second output shaft housing 221, forming an end plate 2251 of the boss 225. A ball groove is provided at the upper end of the second output shaft 234, and a steel ball 2342 is placed in the ball groove. The steel ball 2342 is pressed against the upper end of the second output shaft 234 and the end plate 2251 to form a planar thrust. Furthermore, a pad 2343 is provided on the top of the steel ball 2342. The pad 2343 can be a steel plate made of 65Mn material with a heat treatment hardness of about 60 degrees. The pad 2343 is used to bear the axial force of the entire bracket, which can improve the stability of the reducer 2 in harsh environments.

[0069] The top of the column 1 is provided with a mounting base 12, with a mounting hole defined in the center. The second output end 2341 is inserted into the mounting hole (not shown) to form a fixed connection, using the existing shaft-to-hole method. Specifically, the mounting base 12 includes a fixing plate 121 and a mounting post 123. The fixing plate 121 is welded to the column 1, and the mounting post 123 has a mounting hole defined therein. The fixing of the column 1 to the second output end 2341 forms a fixed connection with the reducer 2.

[0070] The coupling between the first drive motor 24 and the first input shaft 233, and the coupling between the second drive motor 25 and the second input shaft 236, can be achieved by fixedly connecting the motor (motor reducer) output shaft and the worm, or by directly providing worm gears on the motor output shaft, that is, the motor output shaft and the worm are integrally formed or integrally formed. The worm gear transmission can be a direct worm gear transmission or a transmission with a reduction gear pair between the worms. In some embodiments, the second drive motor 25 and the first drive motor 24 form a motor reducer, and the output shaft of the reducer is connected to the first input shaft 233 and the second input shaft 236.

[0071] The second output end 2341 is fixedly connected to the top of the column 1. Bearings can be provided below the second output shaft housing 221 and at the top of the column 1, so that the reducer 2 can be well supported while not affecting the rotation of the reducer 2 relative to the column 1.

[0072] This embodiment is preferred. A first barrel 213 is disposed below the first output shaft housing 211 and directly below the first turbine housing 212. A second barrel 223 is disposed to the left of the second output shaft housing 221 and directly to the left of the second turbine housing 222 (the left side being the side opposite the first turbine housing 212). The first input shaft 233 is disposed within the first barrel 213 and secured to the first barrel 213 via a third bearing 273. One end of the first drive motor 24 is secured to one end of the first barrel 213, providing good support for the first input shaft 233. The second input shaft 236 is disposed within the second barrel 223 and secured to the second barrel 223 via a fourth bearing 274. The second drive motor 25 is secured to the end of the second barrel 223, providing good support for the second input shaft 236.

[0073] The first cylinder 213 and the second cylinder 223 are connected and fixed at both ends or the middle to form a reinforced support for the connection between the first output shaft housing 211 and the second output shaft housing 221. At the same time, reinforcing plates can be set on the first cylinder 213, the second cylinder 223 and the first turbine housing 212 to increase the structural strength.

[0074] The fixed frame 3 includes a rotating main shaft 31, a longitudinal rod 32, and a secondary rod 33. One end of the two rotating main shafts 31 is respectively connected to the reducer 2 to form a horizontal long rotating main shaft 31. Specifically, one end of the two rotating main shafts 31 is respectively fixedly connected to the two first output ends 2311, so that the rotating main shaft 31 is located on both sides of the reducer 2, forming a rotating main shaft that rotates symmetrically. The rotation output by the first output end 2311 drives the rotating main shaft 31 to rotate. The rotating main shaft 31 is a tubular structure, and a mounting plate 311 is provided at the end. The mounting plate 311 includes a connecting plate 312 and a coupling column 313 protruding from the center of the connecting plate 312. The coupling column 313 is fixedly connected to the first output end 2311 of the first output shaft 231.

[0075] The coupling column 313 is provided with a coupling hole 314 , and the first output end 2311 is inserted into the coupling hole 314 for fixed connection. The central axis of the first output shaft 231 substantially coincides with the central axis of the rotating main shaft 31 .

[0076] The two ends of the rotating main shaft 31 are connected to longitudinal rods 32, forming an "I" shape; the two ends of the longitudinal rods 32 are respectively connected to transverse auxiliary rods 33. The connection between the rotating main shaft 31 and the connecting longitudinal rods 32 and auxiliary rods 33 ensures that the main support structure and the axis of the transversely arranged first output shaft 231 are substantially coplanar. Therefore, when the photovoltaic panel 4 tracks the sun, the torque change generated by the first output shaft 231 is relatively small, and the torque change generated by the reducer 2 is also relatively small, allowing the photovoltaic panel 4 to move at a larger angle.

[0077] The photovoltaic panel fixing frame 3 further includes purlins 34 fixed above the mesh frame composed of the horizontal bar rotation main shaft 31 , the longitudinal bars 32 and the auxiliary bars 33 ; the photovoltaic panels are mounted on the purlins 34 .

[0078] like Figure 7-Figure 8 As shown, the pitch angle β of the photovoltaic panel 4 can be adjusted within a range of at least 80° to -20°. This is suitable for most geographical environments with longitude and latitude, as well as natural environments with rain, snow, wind, and sand. The azimuth angle α of the photovoltaic panel 4 can be adjusted within a range of -135° to 135°.

[0079] Because the center of gravity of the primary load-bearing structure of the mounting bracket 3 is located at, or slightly above or below, the center of the first output shaft 231, the force exerted by the mounting bracket 3 on the reducer 2 during tracking varies little. Furthermore, the center of gravity of the primary photovoltaic panel is relatively close to the center of the first output shaft 231, resulting in a low force at large angles.

[0080] The fixing frame 3 can fix 8 or even more standard photovoltaic panels 4 by rotating the main shaft 31 and the arrangement of the longitudinal rod 32 and the auxiliary rod 33, which can improve the economic benefits of each photovoltaic panel and facilitate promotion and application.

[0081] In order to further adapt to the above photovoltaic bracket, the present invention also provides a control system for a photovoltaic tracking bracket. The control system for the photovoltaic tracking bracket includes a photovoltaic tracking bracket 100 and a control device.

[0082] The photovoltaic tracking bracket 100 includes a column 1, a reducer 2, and a photovoltaic panel mounting bracket 3. The column 1 is fixed to the bottom surface or pile foundation and provides support for the bracket. The reducer 2 serves as the bracket's rotation and pitch adjustment mechanism. The photovoltaic panel mounting bracket 3 includes a crossbar, a longitudinal bar, and purlins. One end of the crossbar is bolted to the reducer 2. The bottom of the purlin is fixed to the crossbar and longitudinal bar to support and secure the photovoltaic panel.

[0083] The control device further comprises a light sensor 5, a sub-controller 6 and a main controller.

[0084] The sub-controller 6 receives the signal sent by the main controller and the position information and light intensity information of the light sensor 5 at the same time, outputs the signal through logical operation, and drives the motor through the motor drive module to adjust the photovoltaic panel to the corresponding position.

[0085] Specific assembly steps of a photovoltaic tracking bracket control system:

[0086] Column 1: Fix the lower flange of the column to the ground or prefabricated pile foundation with bolts.

[0087] Reducer 2 (reduction box): Fix the reduction box to the upper end face of the column with bolts.

[0088] Rotating main shaft 31: Fix it to both ends of the reduction box (connected to the first output shaft) with bolts through taper fit or flange connection.

[0089] Longitudinal rod 32: It is fixed to both ends of the rotating main shaft 31 by bolts through the pressure plate.

[0090] Auxiliary rod 33: It is fixed on both ends of the longitudinal rod 32 with bolts.

[0091] Purlin 34: Fix it to the secondary rod 33 with bolts through the pressure plate.

[0092] Photovoltaic panels 4: Fix them to the purlins 34 with bolts, screws or fasteners.

[0093] Light sensor 5: Use bolts to fix it on the frame of photovoltaic panel 4 or on a specially set mounting piece.

[0094] Drive motor: includes a first drive motor and a second drive motor, which are fixed to the first housing and the second gear box with bolts.

[0095] Sub-controller 6: Fix it to the column with bolts.

[0096] The main controller is arranged on the master control platform. The utility model can also be hoisted onto the column after the speed reducer, the rotating main shaft and the photovoltaic panel are installed.

[0097] The sub-controller is equipped with a dip switch, which serves as the bracket arrangement number. If there is any damage, the normal sub-controller can be replaced by turning the dip switch to the corresponding position, which greatly reduces the maintenance cost.

[0098] The "transverse" mentioned in this application is the horizontal and perpendicular direction to the "longitudinal" length direction of the pipeline to be installed, and the "front" and "rear" are relative to the front and rear of the transport vehicle, which are generally in the same direction as the "longitudinal" length direction of the pipeline.

[0099] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The accompanying drawings show only one embodiment of the present invention and are not intended to be limiting. Therefore, if a person skilled in the art is inspired by the above and, without departing from the inventive purpose of the present invention, devises methods and embodiments similar to the present invention without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A dual-axis tracking bracket, comprising a column (1), a reducer (2), a drive motor and a fixing bracket (3), characterized in that: The reducer (2) includes a gearbox (20) and a horizontal first output shaft (231), a vertical second output shaft (234), a first input shaft (233), and a second input shaft (236) arranged in the gearbox (20); the drive motor includes a first drive motor (24) and a second drive motor (25) for driving the first input shaft (233) and the second input shaft (236) respectively; the fixed frame (3) includes a rotating main shaft (31); both ends of the first output shaft (231) are fixedly connected to one end of a rotating main shaft (31), and the first output shaft (231) and the rotating main shaft (31) are substantially coaxial; the lower end of the second output shaft (234) is fixedly connected to the upper end of the column (1); the first drive motor (24) drives the first output shaft (231) to rotate, driving the first output shaft (231) to rotate, thereby rotating the fixed frame (3); the second drive motor (25) drives the second input shaft (236) to drive the second output shaft (234) to rotate, thereby rotating the reducer (2).

2. The dual-axis tracking bracket according to claim 1, characterized in that: The gearbox (20) comprises a first housing (21) and a second housing (22), wherein the first housing (21) and the second housing (22) form an integral part; the first output shaft (231) is provided with a first turbine (232), the first input shaft (233) is provided with a worm gear meshing with the first turbine (232), the first output shaft (231) is located in the first housing (21), and both ends extend out to be fixedly connected to the rotating main shaft (31); the second output shaft (234) is provided with a second turbine (235), and the second input shaft (236) is provided with a worm gear meshing with the second turbine (235); the second output shaft (234) is located in the second housing (22), and its lower end extends out to be fixedly connected to the mounting seat (12) at the upper end of the column (1).

3. The dual-axis tracking bracket according to claim 2, characterized in that: A fixing flange (11) is provided at the bottom of the column (1), a mounting hole is provided in the middle of the mounting seat (12), the lower end of the second output shaft (234) is a second output end (2341), and the second output end (2341) is inserted into the mounting hole to form a fixed connection.

4. The dual-axis tracking bracket according to claim 2, characterized in that: The first housing (21) includes a protruding first turbine housing (212), and the first turbine (232) is located in the first turbine housing (212); the second housing (22) includes a protruding second turbine housing (222), and the second turbine is located in the second turbine housing (222); a plurality of ribs are provided between the first housing (21) and the second turbine housing (222).

5. The dual-axis tracking bracket according to claim 4, characterized in that: A first cylinder (213) is provided below the first turbine housing (212); a second cylinder (223) is provided on one side of the second turbine housing (222); the first input shaft (233) is provided in the first cylinder (213), and the second input shaft (236) is provided in the second cylinder (223), respectively meshing with the first turbine (232) and the second turbine worm gear for transmission, and the two ends of the first cylinder (213) and the second cylinder (223) are fixedly connected to form a support.

6. The dual-axis tracking bracket according to claim 2, characterized in that: An end plate (2251) is provided at the upper end of the second box body (22), a ball groove is provided at the upper end of the second output shaft (234), a steel ball (2342) is provided in the ball groove, and the steel ball (2342) is positioned between the end plate (2251) and the second output shaft (234).

7. A dual-axis tracking bracket according to any one of claims 1 to 6, characterized in that: The rotating main shaft (31) is a straight tube, with a mounting plate (311) provided at the end thereof. The mounting plate (311) comprises a connecting plate (312) and a coupling column (313) protruding from the center of the connecting plate (312). The first output end (2311) at one end of the first output shaft (231) is inserted into the coupling hole (314) for fixed connection.

8. The dual-axis tracking bracket according to claim 6, characterized in that: The fixing frame (3) further comprises a longitudinal rod (32), a secondary rod (33) and a purlin (34); the other ends of the two rotating main shafts (31) are respectively connected to the longitudinal rod (32) to form an "I" shape; the two ends of the longitudinal rod (32) are respectively connected to the transverse secondary rod (33); the purlin (34) is fixed to the longitudinal rod (32) and the secondary rod (33) to fix the photovoltaic panel (4).

9. A control system for a dual-axis tracking bracket, comprising the dual-axis tracking bracket (100) according to any one of claims 1 to 8 and a control device (200), characterized in that: The control device (200) comprises a light sensor (5) and a sub-controller (6), wherein the light sensor (5) is electrically connected to the sub-controller (6), and the light sensor (5) is mounted on the frame of the photovoltaic panel (4); the sub-controller (6) receives light intensity information from the light sensor (5) and outputs a signal to control the drive motor.

10. The control system of a dual-axis tracking bracket according to claim 9, characterized in that: The light sensor (5) comprises four photosensitive diodes (53), which are respectively arranged at four positions of the light-shielding column (531). The four photosensitive diodes (53) respectively output photosensitive signals according to the shielding of the light-shielding column (531).

11. The control system of a dual-axis tracking bracket according to claim 9, characterized in that: The sub-controller (6) comprises a power supply system, an address dial switch, a motor drive module, and a data transceiver module, wherein the address dial switch is used to mark the address of the sub-controller.

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