Photovoltaic tracking system suitable for being installed at different slopes
By using the adaptive design of fisheye bearings and polygonal tube main beams, the problems of high construction difficulty and high cost of photovoltaic tracking systems in complex terrain are solved, achieving more efficient site utilization and system stability, reducing construction and maintenance costs, and improving power generation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWERWAY RENEWABLE ENERGY
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-19
AI Technical Summary
Existing photovoltaic tracking systems require frequent adjustments to the tracker layout and foundation under complex terrain conditions, resulting in low site utilization and high construction costs.
The system adopts a fisheye bearing and a polygonal tube main beam structure to achieve adaptive installation on terrains with different slopes. Through the universal rotation of the fisheye bearing and the bending deformation of the polygonal tube, the length of the column node is automatically adjusted, reducing manual measurement and earthwork operations, and improving the system's flexibility and stability.
It significantly reduces construction difficulty and cost, improves site utilization, enhances system stability and reliability, reduces the risk of component damage, and improves power generation efficiency and land resource utilization.
Smart Images

Figure CN224264908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic tracking system technology, and in particular to a photovoltaic tracking system suitable for installation on different slopes. Background Technology
[0002] Currently, photovoltaic (PV) tracker products on the market face increasingly complex terrain conditions. In uneven terrain with varying elevations, it is often necessary to frequently adjust the tracker layout or carry out extensive earthwork to level the foundation, or even both simultaneously. During this process, massive amounts of terrain data need to be collected manually and analyzed in depth, leading to repeated adjustments to the tracker layout, column node length, and foundation. This not only results in low site utilization but also significantly increases construction and production costs. Utility Model Content
[0003] The purpose of this invention is to propose a photovoltaic tracking system suitable for installation on different slopes, which can solve the technical problems of existing photovoltaic tracking systems in the background art, which require repeated adjustments to the tracker layout, column node length and foundation, resulting in low site utilization and increased construction and production costs.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A photovoltaic tracking system suitable for installation at different slopes includes a main beam, a column, and solar panels;
[0006] The column extends vertically and is installed on the slope. The column includes a driving column and several non-driving columns. The top of the driving column and several non-driving columns are all equipped with rotating components. The top of the driving column is also equipped with a rotary actuator. The main beam is rotatably installed on the column through several rotating components. The rotary actuator is used to drive the main beam to rotate.
[0007] The rotating assembly includes a fisheye bearing housing and a fisheye bearing, wherein the fisheye bearing housing includes a column mounting part and a bearing mounting part;
[0008] The bearing mounting part extends outward from both sides and connects to form the bearing mounting part. The fisheye bearing seat is Y-shaped, the bearing mounting part is O-shaped, the bottom end of the column mounting part is connected to the top end of the column, and the bearing mounting part is connected to the fisheye bearing.
[0009] The main beam is a polygonal tube, and the main beam is sequentially inserted and installed on multiple fisheye bearings along the horizontal direction.
[0010] The solar panels are connected end to end by a fixing assembly and installed on the main beam, and the solar panels rotate with the main beam.
[0011] Preferably, the main beam is an octagonal tube.
[0012] Preferably, it also includes a damping assembly, which is mounted on the non-drive columns arranged at the two outermost ends;
[0013] The damping assembly includes a rotating arm, a damper, and a retainer;
[0014] The rotating arm is close to the fisheye bearing seat and clamped to the outer circumference of the main beam;
[0015] The upper end of the damper is connected to the rotating arm, and the lower end of the damper is fixed to the side of the corresponding non-driving column by the fixing device.
[0016] Preferably, it also includes a self-powered component, which is mounted on the main beam via the fixing component, and the self-powered component is mounted close to the rotary drive;
[0017] The self-powered component is electrically connected to the rotary drive.
[0018] Preferably, it also includes a controller and a wireless signal receiver;
[0019] The controller is installed close to the self-powered component, and the controller is electrically connected to the self-powered component;
[0020] The controller is also electrically connected to the rotary drive and controls the start and stop of the rotary drive;
[0021] The wireless signal receiver is electrically connected to the controller;
[0022] The controller includes a tracking device for tracking the angle of sunlight.
[0023] Preferably, the fixing components include a keel and a clamp;
[0024] The keel includes a keel body and a keel top plate extending from both sides. Both the keel body and the keel top plate are provided with multiple mounting through holes for fasteners to pass through. The keel body is detachably connected to the clamp, and the keel top plate is detachably connected to the edge of the solar panel.
[0025] The clamp includes a clamp top plate and a clamp body. The top surface of the clamp top plate is fitted with the bottom surface of the keel. The bottom end of the clamp top plate is open and hollow inside. The bottom end of the clamp top plate is provided with a first irregular groove that matches the shape of the main beam. The bottom end of the clamp body is provided with a second irregular groove that matches the shape of the main beam at the position where it supports the main beam. The first irregular groove and the second irregular groove have the same shape. The clamp body hugs the main beam. The upper end of the clamp body passes through the clamp top plate and the keel and is fixed to the keel.
[0026] Preferably, it also includes a mounting base;
[0027] The bottom of the fixed base is fixed to the top of the drive column, and the rotary drive is mounted on the top of the drive column through the fixed base frame.
[0028] One of the above technical solutions has the following beneficial effects:
[0029] 1. Significantly Reduced Construction Difficulty and Costs: Traditional photovoltaic tracking systems require manual collection of extensive terrain data and repeated adjustments to column node lengths when facing complex terrain, resulting in a cumbersome and labor-intensive construction process. This system, through the ingenious combination of fisheye bearings and polygonal tubular main beams, can automatically adapt to the terrain within a certain slope range, eliminating the need for manual adjustments to column node lengths. This significantly reduces manual measurement, calculation, and adjustment work during construction, lowering labor costs. Furthermore, since only a small portion of the foundation work at nodes exceeding allowable angle limits requires earthwork, the amount of earthwork is significantly reduced compared to traditional methods. This not only saves direct costs such as excavation, transportation, and backfilling but also reduces environmental remediation costs associated with large-scale earthwork operations, achieving effective control over construction costs.
[0030] 2. Significantly Improved Site Utilization: Previously, complex terrain often made it difficult to deploy photovoltaic (PV) tracking system arrays, with some areas unable to be rationally arranged due to terrain limitations, resulting in wasted land resources. This system, with its adaptive slope capability, can better adapt to different slope terrains, making PV tracking system array deployment more flexible and convenient. Whether on undulating hills or sloping slopes, it can maximize the use of available installation area, reduce land idleness caused by terrain limitations, significantly improve site utilization, and enable limited land resources to support more PV equipment, increasing power generation efficiency per unit area.
[0031] 3. Enhanced System Stability and Reliability: The structural design of the fisheye bearing and polygonal tubular main beam not only achieves slope adaptability but also optimizes the stress distribution of the system to a certain extent. When facing terrain with different slopes, the system can adjust its structure to make the stress on each component more even, reducing local stress concentration caused by terrain changes. This helps reduce the risk of component damage, extend the system's service life, enhance the stability and reliability of the entire photovoltaic tracking system in complex terrain environments, reduce later maintenance costs and repair frequency, and ensure the continuity and stability of photovoltaic power generation. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the structure of a photovoltaic tracking system suitable for installation at different slopes according to this utility model;
[0033] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;
[0034] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;
[0035] Figure 4 This is a schematic diagram of the structure of a rotating component in a photovoltaic tracking system suitable for installation at different slopes, according to this utility model.
[0036] Figure 5 This is a schematic diagram of the structure of a fixed component in a photovoltaic tracking system suitable for installation at different slopes, according to this utility model.
[0037] In the attached diagram: Main beam 1, column 2, drive column 21, non-drive column 22, solar panel 3, rotary actuator 4, rotating assembly 5, fisheye bearing seat 51, column mounting part 511, bearing mounting part 512, fisheye bearing 52, fixing assembly 6, keel 61, keel body 611, keel top plate 612, clamp 62, clamp top plate 621, clamp body 622, first irregular groove 623, second irregular groove 624, damping assembly 7, rotating arm 71, damper 72, fixing device 73, self-powered assembly 8, controller 9, wireless signal receiver 10, fixing seat 11, slope 100. Detailed Implementation
[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0040] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0042] A photovoltaic tracking system suitable for installation on different slopes includes a main beam 1, a column 2, and a solar panel 3;
[0043] The column 2 extends vertically and is installed on the slope 100. The column 2 includes a driving column 21 and several non-driving columns 22. The top of the driving column 21 and several non-driving columns 22 are all equipped with rotating components 5. The top of the driving column 21 is also equipped with a rotary driver 4. The main beam 1 is rotatably installed on the column 2 through several rotating components 5. The rotary driver 4 is used to drive the main beam 1 to rotate.
[0044] The rotating assembly 5 includes a fisheye bearing seat 51 and a fisheye bearing 52. The fisheye bearing seat 51 includes a column mounting part 511 and a bearing mounting part 512.
[0045] The bearing mounting part 512 extends outward from both sides and connects to form the bearing mounting part 512. The fisheye bearing seat 51 is Y-shaped, the bearing mounting part 512 is O-shaped, the bottom end of the column mounting part 511 is connected to the top end of the column 2, and the bearing mounting part 512 is connected to the fisheye bearing 52.
[0046] The main beam 1 is a polygonal tube, and the main beam 1 is sequentially inserted and installed on multiple fisheye bearings 52 along the horizontal direction.
[0047] The solar panel 3 is connected end to end by the fixing component 6 and installed on the main beam 1. The solar panel 3 rotates with the main beam 1.
[0048] like Figure 1-5 As shown, the working principle of this photovoltaic tracking system, applicable to installation on different slopes, is as follows: The column 2 is vertically anchored to the slope 100, with the driving column 21 and the non-driving column 22 working in tandem. The rotary actuator 4 at the top of the driving column 21 serves as the core power source, providing driving force for the rotation of the entire main beam 1, enabling the main beam 1 to rotate flexibly within a certain range. This, in turn, causes the solar panels 3 installed on the main beam 1 to adjust their orientation for better reception of solar radiation.
[0049] Importantly, the rotating assembly 5 installed on column 2 is the key structure for enabling the system to adapt to slope. The fisheye bearing seat 51 in the rotating assembly 5 is Y-shaped, with its bottom end of the column mounting part 511 firmly connected to the top end of column 2, and its bearing mounting part 512 tightly connected to the fisheye bearing 52. The fisheye bearing 52 has unique omnidirectional rotation characteristics. When the system is installed on sloping terrain, as long as the slope between two nodes does not exceed 1.5°, the fisheye bearing 52 can rotate flexibly, adapting to changes in the terrain slope through its own rotation.
[0050] Multiple fisheye bearings 52 are sequentially inserted horizontally through the polygonal tubular main beam 1. This structural design allows the main beam 1 to undergo a certain degree of bending deformation under the support of the fisheye bearings 52, utilizing its own structural characteristics. When the fisheye bearings 52 rotate due to the terrain slope, the main beam 1 bends accordingly. The two work together to achieve direct self-adaptation of the system to the slope.
[0051] The solar panel 3 is connected end to end to the main beam 1 by the fixing component 6. As the main beam 1 rotates and the slope changes, the solar panel 3 will also move synchronously to maintain a relatively reasonable tilt angle, so as to maximize the reception of solar energy and achieve efficient power generation.
[0052] In summary, the beneficial effects of this photovoltaic tracking system, which is suitable for installation at different slopes, include:
[0053] 1. Significantly Reduced Construction Difficulty and Costs: Traditional photovoltaic tracking systems require manual collection of extensive terrain data and repeated adjustments to the length of the two column nodes when facing complex terrain, resulting in a cumbersome construction process and high labor costs. This system, however, utilizes the ingenious combination of the fisheye bearing 52 and the polygonal tube main beam 1 to automatically adapt to the terrain within a certain slope range, eliminating the need for manual adjustments to the length of the two column nodes. This significantly reduces manual measurement, calculation, and adjustment work during construction, lowering labor costs. Furthermore, since only a small portion of the foundation at nodes exceeding allowable angle limits requires earthwork, the amount of earthwork is significantly reduced compared to traditional methods. This not only saves direct costs such as excavation, transportation, and backfilling but also reduces environmental remediation costs associated with large-scale earthwork operations, achieving effective control over construction costs.
[0054] 2. Significantly Improved Site Utilization: Previously, complex terrain often made it difficult to deploy photovoltaic (PV) tracking system arrays, with some areas unable to be rationally arranged due to terrain limitations, resulting in wasted land resources. This system, with its adaptive slope capability, can better adapt to different slope terrains, making PV tracking system array deployment more flexible and convenient. Whether on undulating hills or sloping slopes, it can maximize the use of available installation area, reduce land idleness caused by terrain limitations, significantly improve site utilization, and enable limited land resources to support more PV equipment, increasing power generation efficiency per unit area.
[0055] 3. Enhanced System Stability and Reliability: The structural design of the fisheye bearing 52 and the polygonal tube main beam 1 not only achieves slope adaptability but also optimizes the stress distribution of the system to a certain extent. When facing terrain with different slopes, the system can adjust its structure to make the stress on each component more uniform, reducing local stress concentration caused by terrain changes. This helps reduce the risk of component damage, extend the service life of the system, enhance the stability and reliability of the entire photovoltaic tracking system in complex terrain environments, reduce later maintenance costs and repair frequency, and ensure the continuity and stability of photovoltaic power generation.
[0056] To further clarify, the main beam 1 is an octagonal tube.
[0057] In a preferred embodiment, the main beam 1 adopts an octagonal tube design, with multiple fisheye bearings 52 sequentially inserted along the horizontal direction. Supported by the fisheye bearings 52, this octagonal tube structure of the main beam 1, due to its unique geometry, can undergo a certain degree of bending deformation under stress.
[0058] Further explanation includes a damping component 7, which is mounted on the non-drive columns 22 arranged at the two outermost ends;
[0059] The damping assembly 7 includes a rotating arm 71, a damper 72, and a retainer 73;
[0060] The rotating arm 71 is close to the fisheye bearing seat 51 and clamped to the outer circumferential surface of the main beam 1;
[0061] The upper end of the damper 72 is connected to the rotating arm 71, and the lower end of the damper 72 is fixed to the side of the corresponding non-driving column 22 by the fixing device 73.
[0062] Specifically, such as Figure 2 As shown, the damping component 7 can prevent the main beam 1 from swaying due to wind in windy weather, thereby improving the wind resistance performance of the photovoltaic tracking system.
[0063] Further explanation includes a self-powered component 8, which is mounted on the main beam 1 via the fixing component 6, and the self-powered component 8 is mounted close to the rotary drive 4;
[0064] The self-powered component 8 is electrically connected to the rotary drive 4.
[0065] Specifically, such as Figure 3 As shown, the rotary drive 4 is provided with available electric power at any time via a self-powered assembly 8. The self-powered assembly 8 includes a solar panel and an energy storage device that provide separate electric power to the rotary drive 4.
[0066] Further explanation also includes controller 9 and wireless signal receiver 10;
[0067] The controller 9 is installed close to the self-powered component 8, and the controller 9 is electrically connected to the self-powered component 8;
[0068] The controller 9 is also electrically connected to the rotary drive 4 and controls the start and stop of the rotary drive 4;
[0069] The wireless signal receiver 10 is electrically connected to the controller 9;
[0070] The controller 9 includes a tracking device for tracking the angle of sunlight.
[0071] like Figure 3 As shown, when a harvesting device needs to pass under the photovoltaic tracking system, a signal can be sent through the equipped remote control. The wireless signal receiver 10 receives the signal sent by the remote control and transmits it to the controller 9. The controller 9 controls the rotary drive 4 to start, and drives the main beam 1 and multiple solar panels 3 to rotate together. At the same time, the position of multiple solar panels 3 is adjusted in time so that the harvesting device can pass smoothly.
[0072] When the angle of sunlight changes and reaches a set threshold, the controller 9 controls the rotary drive 4 to start, and drives the transmission gear to rotate the main beam 1 and multiple solar panels 3 together, so that the surface of the solar panels 3 can receive vertical sunlight, thereby improving power generation efficiency.
[0073] To further explain, the fixing component 6 includes a keel 61 and a clamp 62;
[0074] The keel 61 includes a keel body 611 and a keel top plate 612 extending from both sides. Both the keel body 611 and the keel top plate 612 are provided with multiple mounting through holes for fasteners to pass through. The keel body 611 is detachably connected to the clamp 62, and the keel top plate 612 is detachably connected to the edge of the solar panel 3.
[0075] The clamp 62 includes a clamp top plate 621 and a clamp body 622. The top surface of the clamp top plate 621 is in contact with the bottom surface of the keel 61. The bottom end of the clamp top plate 621 is open and hollow inside. The bottom end of the clamp top plate 621 is provided with a first irregular groove 623 that matches the shape of the main beam 1. The bottom end of the clamp body 622, at the position where it supports the main beam 1, is provided with a second irregular groove 624 that matches the shape of the main beam 1. The first irregular groove 623 and the second irregular groove 624 have the same shape. The clamp body 622 hugs the main beam 1. The upper end of the clamp body 622 passes through the clamp top plate 621 and the keel 61 and is fixed to the keel 61.
[0076] Specifically, such as Figure 5 As shown, the clamp 62 includes a clamp top plate 621 and a clamp body 622. The top surface of the clamp top plate 621 is in contact with the bottom surface of the keel body 611, resulting in stronger stability. Since the contact area between the keel 61 and the clamp top plate 621 is large, the bending resistance of the keel 61 will not decrease with the increase in length, even if the length increases. In other words, when the size of the photovoltaic module increases, the thickness and height of the keel 61 do not need to be increased, which significantly reduces the production cost of the keel 61.
[0077] More importantly, the bottom end of the clamp top plate 621 is open and hollow inside. The bottom end of the clamp top plate 621 is provided with a first irregular groove 623 that matches the shape of the main beam 1. The bottom end of the clamp body 622, which supports the main beam 1, is provided with a second irregular groove 624 that matches the shape of the main beam 1. The first irregular groove 623 and the second irregular groove 624 have the same shape. The clamp body 622 hugs the main beam 1. The upper end of the clamp body 622 passes through the clamp top plate 621 and the keel 61 and is fixed to the keel 61. For irregular tubes such as octagonal tubes, this connection method significantly increases the contact area between the clamp 62 and the main beam 1, effectively preventing the clamp 62 from slipping on the main beam 1.
[0078] The shapes of the first irregular groove 623 and the second irregular groove 624 are determined by the shape of the cross-section of the main beam 1. When the main beam 1 is an octagonal tube, both the first irregular groove 623 and the second irregular groove 624 are trapezoidal. This makes the fixation between the main beam 1 and the clamp 62 more secure, stable, and versatile. The first irregular groove 623 and the second irregular groove 624 perfectly fit the main beam 1, ensuring close contact between the clamp body 622 and the main beam 1. The gap between the clamp 62 and the main beam 1 is significantly reduced. During installation, the main beam 1 automatically corrects itself along the shapes of the first irregular groove 623 and the second irregular groove 624, eliminating the need for secondary manual adjustment for alignment. This simplifies installation and reduces costs.
[0079] Further explanation also includes the mounting base 11;
[0080] The bottom of the fixed base 11 is fixed to the top of the drive column 21, and the rotary drive 4 is mounted on the top of the drive column 21 via the fixed base 11.
[0081] Specifically, such as Figure 3 As shown, the mounting stability of the rotary drive 4 on the top of the column 2 can be improved by using the mounting bracket 11.
[0082] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A photovoltaic tracking system suitable for installation on different slopes, characterized in that, It includes the main beam (1), columns (2) and solar panels (3); The column (2) extends vertically and is installed on the slope (100). The column (2) includes a driving column (21) and several non-driving columns (22). The top of the driving column (21) and several non-driving columns (22) are all equipped with rotating components (5). The top of the driving column (21) is also equipped with a rotary driver (4). The main beam (1) is rotatably installed on the column (2) through several rotating components (5). The rotary driver (4) is used to drive the main beam (1) to rotate. The rotating assembly (5) includes a fisheye bearing housing (51) and a fisheye bearing (52), wherein the fisheye bearing housing (51) includes a column mounting part (511) and a bearing mounting part (512); The bearing mounting part (512) extends outward from both sides and connects to form the bearing mounting part (512). The fisheye bearing seat (51) is Y-shaped, the bearing mounting part (512) is O-shaped, the bottom end of the column mounting part (511) is connected to the top end of the column (2), and the bearing mounting part (512) is connected to the fisheye bearing (52). The main beam (1) is a polygonal tube, and the main beam (1) is sequentially inserted and installed on multiple fisheye bearings (52) along the horizontal direction; The solar panel (3) is connected end to end by a fixing component (6) and installed on the main beam (1). The solar panel (3) rotates with the main beam (1).
2. A photovoltaic tracking system suitable for installation at different slopes according to claim 1, characterized in that, The main beam (1) is an octagonal tube.
3. A photovoltaic tracking system suitable for installation at different slopes according to claim 1, characterized in that, It also includes a damping assembly (7), which is mounted on the non-drive columns (22) arranged at the two ends; The damping assembly (7) includes a rotating arm (71), a damper (72), and a retainer (73); The rotating arm (71) is close to the fisheye bearing seat (51) and clamped to the outer circumferential surface of the main beam (1); The upper end of the damper (72) is connected to the rotating arm (71), and the lower end of the damper (72) is fixed to the side of the corresponding non-driving column (22) by the fixing device (73).
4. A photovoltaic tracking system suitable for installation on different slopes according to claim 1, characterized in that, It also includes a self-powered component (8), which is mounted on the main beam (1) via the fixing component (6) and is mounted close to the rotary drive (4); The self-powered component (8) is electrically connected to the rotary drive (4).
5. A photovoltaic tracking system suitable for installation at different slopes according to claim 4, characterized in that, It also includes a controller (9) and a wireless signal receiver (10); The controller (9) is installed close to the self-powered component (8), and the controller (9) is electrically connected to the self-powered component (8); The controller (9) is also electrically connected to the rotary drive (4) and controls the start and stop of the rotary drive (4); The wireless signal receiver (10) is electrically connected to the controller (9); The controller (9) includes a tracking device for tracking the angle of sunlight.
6. A photovoltaic tracking system suitable for installation at different slopes according to claim 1, characterized in that, The fixing component (6) includes a keel (61) and a clamp (62); The keel (61) includes a keel body (611) and a keel top plate (612) extending from both sides. Both the keel body (611) and the keel top plate (612) are provided with multiple mounting through holes for fasteners to pass through. The keel body (611) is detachably connected to the clamp (62), and the keel top plate (612) is detachably connected to the edge of the solar panel (3). The clamp (62) includes a clamp top plate (621) and a clamp body (622). The top surface of the clamp top plate (621) is in contact with the bottom surface of the keel (61). The bottom end of the clamp top plate (621) is open and hollow inside. The bottom end of the clamp top plate (621) is provided with a first irregular groove (623) that matches the shape of the main beam (1). The bottom end of the clamp body (622) is provided with a second irregular groove (624) that matches the shape of the main beam (1) at the position where it supports the main beam (1). The first irregular groove (623) and the second irregular groove (624) have the same shape. The clamp body (622) hugs the main beam (1). The upper end of the clamp body (622) passes through the clamp top plate (621) and the keel (61) and is fixed on the keel (61).
7. A photovoltaic tracking system suitable for installation at different slopes according to claim 1, characterized in that, It also includes a mounting base (11); The bottom of the fixed base (11) is fixed to the top of the drive column (21), and the rotary drive (4) is mounted on the top of the drive column (21) through the fixed base (11).