A new all-terrain adaptive flat single-axis tracking system

Abstract

This utility model discloses a novel all-terrain adaptable single-axis tracking system, comprising multiple rows of parallel photovoltaic tracking brackets and a drive system for driving the photovoltaic tracking brackets to rotate. The drive system includes a bidirectional output drive, a single-sided input drive, a drive support, a universal joint, and a transmission rod. Preferably, the photovoltaic tracking brackets can be arranged in three rows. Each row of photovoltaic tracking brackets includes a central column and ordinary columns, with ordinary columns located on both sides of the central column. A main beam is rotatably connected to both the central column and the ordinary columns. The bidirectional output drive serves as the drive fulcrum and is fixed to the central column of the middle row via the drive support. The upper output end shaft of the bidirectional output drive is fixed to the main beam of the middle row by bolts. Through the torque transmission function of the universal joint and the transmission rod, the multiple rows of tracking brackets form a system with synchronous drive, synchronous tracking, and differences in height or angle between rows.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, specifically a novel all-terrain adaptable single-axis tracking system. Background Technology

[0002] Currently, the mainstream photovoltaic (PV) tracking system includes horizontal single-axis tracking brackets, inclined tracking brackets, and dual-axis tracking brackets. Horizontal single-axis tracking brackets further include linked horizontal single-axis tracking brackets, single-point driven horizontal single-axis tracking brackets, and multi-point driven horizontal single-axis tracking brackets. These systems have relatively high requirements for terrain, requiring open and flat sites. They are not effectively adapted to terrains with uneven surfaces, irregular sites, or gentle slopes. All-terrain adaptable multi-row, multi-rotation driven horizontal single-axis tracking bracket systems are simple and practical in structure, have fewer components, share a single motor drive, and are highly adaptable to various terrain conditions. They are widely used in gentle slopes, deserts, ponds, farmland, and other similar locations.

[0003] Existing single-axis photovoltaic tracking bracket systems use a single motor to drive a single row of tracking photovoltaic brackets or push rods to drive multiple rows of tracking photovoltaic brackets. These systems have high terrain requirements in the north-south or east-west directions, poor slope adaptability, and require flat slopes. On-site construction is difficult, involving a large amount of surface stripping or leveling work. The installation process is demanding, resulting in high construction and bracket costs. The system also has poor adaptability to terrain.

[0004] Therefore, improving the terrain adaptability and reducing the cost of single-axis photovoltaic tracking systems are problems that photovoltaic technicians need to solve. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel all-terrain adaptable single-axis tracking system, which offers a simple and rationally designed single-axis tracking system.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A novel all-terrain adaptable single-axis tracking system includes multiple rows of photovoltaic tracking brackets arranged in parallel, and a drive system for driving the photovoltaic tracking brackets to rotate. The drive system includes a bidirectional output drive, a single-sided input drive, a drive support, a universal joint, and a transmission rod. Preferably, the photovoltaic tracking brackets can be arranged in three rows. Each row of photovoltaic tracking brackets includes a central column and ordinary columns, with ordinary columns arranged on both sides of the central column. A main beam is rotatably connected to both the central column and the ordinary columns. The bidirectional output drive serves as the drive fulcrum and is fixed to the middle row via the drive support. On the column, the upper output shaft of the bidirectional output drive is fixed to the main beam of the middle row by bolts; the lower output shafts on both sides of the bidirectional output drive are connected to universal joints by bolts; the single-sided input drive, as the drive fulcrum, is fixed to the middle column of the outermost row by a drive support, and the upper output shaft of the single-sided input drive is fixed to the main beam of the outermost row by bolts; the lower input shaft on one side of the single-sided input drive is also connected to a universal joint by bolts; the two ends of the transmission rod are respectively connected to the universal joints at both ends, and the drive torque is transmitted through the universal joints and the transmission rod.

[0008] Preferably, the photovoltaic tracking bracket further includes a bearing seat and a bearing. The upper end of the ordinary column is connected to the bearing seat by bolts, and the bearing is rotatably connected inside the bearing seat. The cross-section of the main beam is polygonal, and the inner hole of the bearing is also polygonal. The main beam is installed in the inner hole of the bearing.

[0009] In the above technical solution, the bearing is installed on the inner circle of the bearing housing, and the bearing housing is fastened to the ordinary column by bolt group to provide support for the main beam and enable the bearing to rotate freely, thereby driving the main beam to rotate.

[0010] Preferably, the photovoltaic tracking bracket further includes purlins and photovoltaic modules. Several sets of inclined and parallel purlins are connected to the main beam via connectors. The photovoltaic modules are sequentially installed on adjacent purlins using screws. Each connector includes two parallel threaded rods and a pressure rod sleeved at one end of the two threaded rods. The purlins are fixedly connected to the ends of the two threaded rods away from the pressure rods. The main beam is located between the purlins and the pressure rods. Nuts are threaded onto the two threaded rods, and tightening the nuts presses them firmly against the side of the pressure rod away from the main beam.

[0011] The above technical solution allows the connecting piece to slide along the main beam by loosening the nut and adjusting its position. Tightening the nut then presses the pressure bar firmly against the main beam, thus stabilizing the purlin and facilitating the installation of the photovoltaic modules.

[0012] Preferably, a control box is bolted to the main beam of the middle row, and a controller is installed inside the control box. The motor on the bidirectional output drive is electrically connected to the controller.

[0013] The above technical solution includes a control program written into the controller to control the operation of the motor on the bidirectional output drive.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This single-axis tracking support system comprises multiple rows of photovoltaic tracking supports arranged in parallel. Through the torque transmission function of universal joints and drive rods, the multiple rows of tracking supports form a synchronously driven and tracking system, accommodating differences in elevation or angle between rows. The universal joints and special functions of the transmission system effectively solve the problems of photovoltaic tracking supports being unable to adapt to irregular terrain and varying elevations, greatly increasing the system's terrain adaptability. Furthermore, the shared motor and control system across multiple rows of tracking supports effectively reduces system costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the all-terrain adaptable multi-row multi-turn drive single-axis tracking bracket system of this patent application.

[0017] Figure 2 This is a front view of the steel structure of the all-terrain adaptable multi-row multi-turn drive single-axis tracking support system of this patent application.

[0018] Figure 3 This is a top view of the steel structure of the all-terrain adaptable multi-row multi-turn drive single-axis tracking support system of this patent application.

[0019] Figure 4 This is a diagram of the power transmission system of the all-terrain adaptable multi-row multi-turn drive single-axis tracking bracket system of this patent application.

[0020] Figure 5 This is a schematic diagram of a bidirectional output drive power transmission node.

[0021] Figure 6 This is a schematic diagram of a single-sided drive (left) input power transmission node.

[0022] Figure 7 This is a schematic diagram of a single-sided drive (right) input power transmission node.

[0023] Figure 8 This is a schematic diagram of a bidirectional output driver.

[0024] Figure 9 This is a schematic diagram of a single-sided drive.

[0025] Figure 10 This is a schematic diagram of the bidirectional output drive and the connection node with the central column.

[0026] Figure 11 This is a schematic diagram of the connection node between the single-sided drive and the central column.

[0027] Figure 12 This is a schematic diagram of a common column connection node.

[0028] Figure 13 This is a schematic diagram of the connection node of the central column.

[0029] Figure 14 This is a schematic diagram of the connectors, purlins, and photovoltaic modules.

[0030] Figure 15 This is a schematic diagram of a bidirectional output drive transmission structure.

[0031] in,

[0032] 1—Bidirectional output driver; 2—Single-sided input driver

[0033] 3—Motor 4—Drive support

[0034] 5—Center column; 6—Universal joint

[0035] 7—Transmission rod 8—Main beam

[0036] 9—Ordinary column; 10—Bearing housing

[0037] 11—Plastic bearing 12—Purlin

[0038] 13—Photovoltaic Modules 14—Control System

[0039] 15—Screw 16—Pressure rod

[0040] 17—Worm gear 18—Worm wheel

[0041] 19—Output end shaft 20—Output connector Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-14 A novel all-terrain adaptable single-axis tracking system includes multiple rows of photovoltaic tracking brackets arranged in parallel and a drive system for driving the photovoltaic tracking brackets to rotate. Preferably, the photovoltaic tracking brackets are arranged in three rows.

[0044] Each row of photovoltaic tracking brackets includes a central column 5 and ordinary columns 9. The ordinary columns 9 are located on both sides of the central column 5 and radiate outwards. A main beam 8 is rotatably connected to both the central column 5 and the ordinary columns 9. Specifically, the photovoltaic tracking bracket also includes a bearing seat 10 and a bearing 11. The upper end of the ordinary column 9 is bolted to the bearing seat 10, and the bearing 11 is rotatably connected inside the bearing seat 10. The main beam 8 has a polygonal cross-section, and the inner hole of the bearing 11 is also polygonal. The main beam 8 is installed inside the inner hole of the bearing 11 so that the main beam 8 can rotate within the bearing 11.

[0045] The drive system includes a bidirectional output drive 1, a single-sided input drive 2, a drive support 4, a universal joint 6, and a transmission rod 7. The bidirectional output drive 1 serves as the drive fulcrum and is fixed to the central column 5 of the middle row via the drive support 4. The upper output shaft of the bidirectional output drive 1 is fixed to the main beam 8 of the middle row by bolts, thereby outputting the torque that drives the main beam 8 to rotate. The lower two output shafts of the bidirectional output drive 1 are connected to universal joints 6 by bolts, and the drive torque is output through the universal joints 6.

[0046] The single-sided input drive 2 is fixed to the outermost central column 5 as the drive fulcrum through the drive support 4. The upper output shaft of the single-sided input drive 2 is fixed to the outermost main beam 8 by bolts, thereby outputting the torque to drive the main beam to rotate. The lower input shaft of the single-sided input drive 2 is also connected to a universal joint 6 by bolts.

[0047] The transmission rod 7 is connected to universal joints 6 at both ends, and the driving torque is transmitted through the universal joints 6 and the transmission rod 7. The driving torque is input through the universal joints 6 to drive the single-sided input drive 2 to rotate.

[0048] The photovoltaic tracking bracket also includes purlins 12 and photovoltaic modules 13. Several sets of inclined and parallel purlins 12 are connected to the main beam 8 via connectors. Photovoltaic modules 13 are arranged sequentially with adjacent purlins 12. Specifically, the connector includes two parallel screws 15 and a pressure rod 16 sleeved on one end of the two screws. The purlins 12 are fixedly connected to the ends of the two screws 15 away from the pressure rod 16. The main beam 8 is located between the purlins 12 and the pressure rod 16. Nuts are threaded onto the two screws 15. Tightening the nuts presses them tightly against the side of the pressure rod away from the main beam. Loosening the nuts allows the connectors to slide along the main beam to adjust their position. Tightening the nuts presses the pressure rod firmly against the main beam, thus stabilizing the purlins for photovoltaic module installation. Furthermore, the photovoltaic modules can be flexibly and randomly arranged along the axial direction according to the terrain features; that is, different numbers of photovoltaic modules can be arranged on a single row of photovoltaic tracking brackets.

[0049] A control box 14 is bolted to the main beam 8 in the middle row. The control box 14 contains a controller, and the motor on the bidirectional output drive is electrically connected to the controller. The controller contains a control program used to control the operation of the motor 3 on the bidirectional output drive.

[0050] This single-axis tracking bracket system comprises two or three rows of photovoltaic tracking brackets arranged side-by-side. Through the torque transmission function of universal joints and drive rods, multiple rows of tracking brackets form a synchronously driven and tracking system, accommodating differences in elevation or angle between rows. The universal joints and special functions of the transmission system effectively solve the problems of photovoltaic tracking brackets being unable to adapt to irregular terrain and varying elevations, greatly increasing the system's terrain adaptability. Furthermore, the shared motor and control system across multiple rows of tracking brackets effectively reduces system costs.

[0051] The bidirectional output drive described in this invention can employ a bidirectional output rotary reducer, which is existing technology. It includes a motor 3, an output shaft 19, a worm gear 17, a worm wheel 18, and an output connector 20. The main beam 8 is installed inside the output shaft 19, and the output connectors 20 at both ends connect to universal joints 6. When the motor 3 operates, it drives the output shaft 19 of the bidirectional output drive to rotate through the worm wheel 18 and the worm gear 17, thereby driving the main beam 8 to rotate. When the worm gear 17 rotates, it also pulls the transmission rods 7 on both sides through the universal joints 6, which in turn pull the single-sided input drive 2, thereby driving the main beam 8 on the single-sided input drive 2 to rotate. The single-sided input drive described in this invention does not include a motor; it drives the drive shaft of the single-sided input drive to rotate through the cooperation of the transmission rods, worm gear, and worm wheel, thereby driving the main beam on it to rotate.

[0052] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new all-terrain adaptive flat single-axis tracking system, characterized by: It includes a photovoltaic tracking bracket arranged in multiple rows and a drive system for driving the photovoltaic tracking bracket to rotate. The drive system includes a bidirectional output drive (1), a single-sided input drive (2), a drive support (4), a universal joint (6), and a transmission rod (7). Each row of photovoltaic tracking brackets includes a central column (5) and ordinary columns (9). The ordinary columns (9) are set on both sides of the central column (5) and radiate to both sides. A main beam (8) is rotatably connected to both the central column (5) and the ordinary columns (9). The bidirectional output drive (1) is fixed to the central column (5) of the middle row as the drive fulcrum through the drive support (4). The upper output shaft of the bidirectional output drive (1) is fixed to the main beam (8) of the middle row by bolts. The lower two output shafts of the bidirectional output drive (1) are connected to universal joints (6) by bolts. The single-sided input drive (2) is fixed to the outermost central column (5) via the drive support (4) as the drive fulcrum. The upper output shaft of the single-sided input drive (2) is fixed to the outermost main beam (8) by bolts. The lower input shaft of the single-sided input drive (2) is also connected to a universal joint (6) by bolts. The transmission rod (7) is connected to the universal joints (6) at both ends of the transmission rod (7) respectively, and the driving torque is transmitted through the universal joints (6) and the transmission rod (7).

2. A new all-terrain adaptive flat single-axis tracking system according to claim 1, characterized in that: The photovoltaic tracking bracket also includes a bearing seat (10) and a bearing (11). The upper end of the ordinary column (9) is connected to the bearing seat (10) by bolts. The bearing (11) is rotatably connected inside the bearing seat (10). The cross section of the main beam (8) is polygonal, and the inner hole of the bearing (11) is also polygonal. The main beam (8) is installed in the inner hole of the bearing (11).

3. A new all-terrain adaptive flat mono-axial tracking system according to claim 2, characterized in that: The photovoltaic tracking bracket also includes purlins (12) and photovoltaic modules (13). Several sets of inclined and parallel purlins (12) are connected to the main beam (8) by connectors. The photovoltaic modules (13) are arranged sequentially with the two adjacent purlins (12).

4. A novel all-terrain adaptive single-axis tracking system according to claim 3, characterized in that: The connector includes two parallel screws (15), a pressure rod (16) sleeved on one end of the two screws, a purlin (12) fixedly connected to the end of the two screws (15) away from the pressure rod (16), the main beam (8) is located between the purlin (12) and the pressure rod (16), and nuts are threaded onto the two screws (15). Tightening the nuts makes them press tightly against the side of the pressure rod away from the main beam.

5. A new all-terrain adaptive flat mono-axial tracking system according to claim 4, characterized in that: A control box (14) is bolted to the main beam (8) in the middle row. The control box (14) contains a controller, and the motor on the bidirectional output drive is electrically connected to the controller.

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