A multi-row linkage multi-point drive flat single-axis tracking system

Abstract

The present invention discloses a multi-row linkage multi-point drive flat single-axis tracking system, comprising multiple rows of tracking brackets, each row of tracking brackets respectively comprising multiple columns, a main shaft rotatably mounted on the top of the multiple columns, a plurality of rotating units arranged on the main shaft at intervals by a mounting assembly arranged on the main shaft, a power assembly, a first torque rod arranged along a length direction parallel to the main shaft, and multiple second torque rods parallel to each other and perpendicular to the first torque rod, multiple rotating units on at least one row of tracking brackets are movably connected through the first torque rod, and corresponding multiple rotating units on multiple rows of tracking brackets are movably connected through the second torque rod. The tracking system of the present invention connects multiple rotating units on multiple rows of tracking brackets and enables multiple rotating units to move synchronously through the arrangement of the first torque rod and the second torque rod, and finally realizes multi-point drive and multi-row linkage of multiple rows of tracking brackets.

Description

Technical Field

[0001] The invention relates to the field of solar photovoltaic power generation, and in particular to a multi-row linked multi-point driven flat single-axis tracking system. Background Art

[0002] The current solar flat single-axis tracking bracket faces several major technical difficulties in the actual application process, specifically: 1. In the field of single-row photovoltaic tracking brackets, photovoltaic tracking brackets using a single-point drive form (such as a single central reduction motor + damping on both sides) cannot meet the requirements of high load, long arrangement, multiple components, and large span; at the same time, the single-point drive structure has poor stability, high cost, and weak adaptability; 2. In the field of multi-row linkage photovoltaic tracking brackets, each row of tracking brackets is designed with a single-point drive in the middle, which is prone to structural failure in severe extreme weather such as strong winds and heavy snow; multi-row linkage solutions generally cannot achieve the function of multi-point synchronous drive in each row, which also causes each row of tracking brackets to be unable to meet the requirements of multi-component and long arrangement. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-row linked multi-point driven flat single-axis tracking system.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multi-row linked multi-point driven flat single-axis tracking system, comprising a plurality of rows of mutually parallel tracking brackets, wherein each row of the tracking brackets comprises a plurality of columns, a main shaft extending along the arrangement direction of the plurality of columns and being rotatable around its own axis centerline and mounted on the top of the plurality of columns, and a mounting assembly disposed on the main shaft for mounting photovoltaic components. The tracking system further comprises a plurality of rotating units disposed on the main shaft at intervals along the length extension direction of the main shaft for driving the main shaft to rotate, a power assembly for providing power to the rotating units, a first torque rod disposed along the length direction parallel to the main shaft, and a plurality of second torque rods parallel to each other and perpendicular to the first torque rod.

[0006] Among them, the plurality of rotating units on at least one row of the tracking brackets are movably connected via the first torque rod, and the corresponding plurality of rotating units on the multiple rows of tracking brackets are movably connected via the second torque rod.

[0007] Preferably, the rotating unit includes a rotating assembly and a driving assembly, the rotating assembly includes a rotating frame with an arc-shaped mounting portion fixed on the main shaft, and a turbine arranged on the arc-shaped mounting portion, the driving assembly includes a worm gear arranged on the column and meshing with the turbine, and the two ends of the second torque rod are respectively connected to the two corresponding worm gears on the two adjacent rows of tracking brackets.

[0008] Further preferably, the tracking system also includes a plurality of reducers which are arranged on the tracking bracket connected to the first torque rod and correspond one-to-one to the plurality of drive components, the reducer having an input shaft, a first output shaft and a second output shaft which are perpendicular to each other, the input shaft and the first output shaft can be respectively connected to two adjacent first torque rods, and the second output shaft can be connected to the worm gear.

[0009] More preferably, the tracking system further comprises universal joints respectively arranged between the first torque rod and the input shaft, and between the first torque rod and the first output shaft.

[0010] More preferably, the tracking system further comprises a coupling arranged between the worm and the second output shaft.

[0011] More preferably, the output shaft of the power assembly is connected to the input shaft of at least one of the reducers.

[0012] Further preferably, the rotating frame also includes a swing arm connected to the arc-shaped mounting portion, a clamp provided in the middle of the swing arm for fixing the rotating frame on the main shaft, and a plurality of connecting rods respectively connected to the swing arm and the arc-shaped mounting portion at both ends.

[0013] Further preferably, the turbine comprises a plurality of arc-shaped turbine modules, each of the turbine modules comprises a turbine body having gear teeth and clamping parts arranged at both ends of the turbine body, and the plurality of turbine modules can be fitted and spliced ​​into the turbine through the clamping parts.

[0014] Preferably, the mounting assembly comprises a plurality of purlins arranged at intervals along the length extension direction of the main axis.

[0015] Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the tracking system of the present invention, through the setting of the first torque rod and the second torque rod, connects the multiple rotating units on the multiple rows of tracking brackets and enables the multiple rotating units to move synchronously, and finally realizes multi-point driving and multi-row linkage of the multiple rows of tracking brackets, so that the multiple rows of tracking brackets can achieve the requirements of high load, long arrangement, multiple components and large span. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the structure of a tracking system in a specific embodiment of the present invention;

[0017] Attached Figure 2 The appended Figure 1 The enlarged schematic diagram at C in the middle;

[0018] Attached Figure 3 is a schematic structural diagram of a rotating assembly in a specific embodiment of the present invention;

[0019] Attached Figure 4 The appended Figure 3 The enlarged schematic diagram at D in the middle;

[0020] Attached Figure 5 It is a schematic diagram of the structure of a reducer in a specific embodiment of the present invention.

[0021] In the figure: A, first tracking bracket; B, second tracking bracket;

[0022] 1. Column; 2. Main shaft; 3. Mounting assembly; 4. Rotating unit; 4a. Rotating assembly; 4a1. Rotating frame; 4a11. Arc-shaped mounting portion; 4a12. Swing arm; 4a13. Hoop; 4a14. Connecting rod; 4a2. Turbine; S4a2. Turbine module; S4a21. Gear teeth; S4a22. Turbine body; S4a23. Clamping portion; 4b. Driving assembly; 5. Power assembly; 6. First torque rod; 7. Second torque rod; 8. Reducer; 8a. Input shaft; 8b. First output shaft; 8c. Third output shaft; 9. Universal joint; 10. Coupling. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0024] The present invention relates to an improvement on a flat single-axis tracking bracket, and proposes a multi-row linkage multi-point drive flat single-axis tracking system. By setting a first torque rod and a second torque rod, a plurality of rotating units on the multi-row tracking bracket are connected and the plurality of rotating units can move synchronously, thereby finally realizing multi-point drive and multi-row linkage of the multi-row tracking bracket, so that the multi-row tracking bracket can meet the requirements of high load, long arrangement, multiple components and large span.

[0025] See also Figure 1-5As shown, a multi-row linked multi-point driven flat single-axis tracking system is shown, including multiple rows of parallel tracking brackets. Each row of tracking brackets includes multiple columns 1, a main shaft 2 installed on the top of multiple columns 1 extending along the arrangement direction of the multiple columns 1 and capable of rotating around its own axis, and a mounting assembly 3 for mounting photovoltaic components on the main shaft 2, where the mounting assembly 3 is a purlin. The tracking system also includes multiple rotating units 4 for driving the main shaft 2 to rotate and arranged on the main shaft 2 at intervals along the length extension direction of the main shaft 2, a power assembly 5 for providing power to the rotating unit 4, a first torque rod 6 arranged along the length direction parallel to the main shaft 2, and multiple second torque rods 7 parallel to each other and perpendicular to the first torque rod 6.

[0026] Among them, the tracking bracket includes a first tracking bracket A located in the first row in its arrangement direction, and multiple rows of second tracking brackets B arranged in sequence along the direction away from the first tracking bracket A. The multiple rotating units 4 on the first tracking bracket A are movably connected through the first torque rod 6, and the first tracking bracket A and the corresponding multiple rotating units 4 on the multiple rows of second tracking brackets B are movably connected through the second torque rod 7.

[0027] In this way, the rotating unit 4 at the head end of the first tracking bracket A can drive the other rotating units 4 on the first tracking bracket A to move synchronously through the first torque rod 6, thereby realizing multi-point driving of the main axis 2 of the first tracking bracket A. Compared with the ordinary multi-row linked single-row single-point driven tracking bracket, it can realize the requirements of longer single-row component arrangement solutions; at the same time, the multi-point rotating unit 4 on the first tracking bracket A can drive the corresponding rotating units 4 on the multi-row second tracking bracket B to move synchronously through the second torque rod 7, thereby realizing the linkage of multiple rows of tracking brackets.

[0028] Furthermore, if Figure 2-3 As shown, the rotating unit 4 includes a rotating assembly 4a and a driving assembly 4b, the rotating assembly 4a includes a rotating frame 4a1 having an arc-shaped mounting portion 4a11 fixed on the main shaft 2, and a turbine 4a2 arranged on the arc-shaped mounting portion 4a11, the driving assembly 4b includes a worm arranged on the column 1 and meshing with the turbine 4a2, and the two ends of the second torque rod 7 are respectively connected to the two corresponding worms on the two adjacent rows of tracking brackets. In this example, in the arrangement direction of the columns 1, one of every three columns 1 is provided with a worm.

[0029] In this way, through the cooperation of the worm wheel 4a2 and the worm, the worm wheel 4a2 rotates around the axis of the main shaft 2 and transmits the bending moment, driving the main shaft 2 to rotate around its own axis, thereby realizing the single-point drive of the single-row tracking bracket; at the same time, by using the cooperation of the turbine 4a2 and the worm at multiple points on the main shaft 2, and utilizing the good structural self-locking performance of the worm wheel and worm, in the non-tracking motion state, the structural stability of the tracking bracket can be ensured without the power provided by the power component 5, thereby effectively reducing the energy consumption of the tracking system and achieving better economic benefits.

[0030] In this embodiment, if Figure 3 As shown, the rotating frame 4a1 also includes a swing arm 4a12 connected to the arc-shaped mounting portion 4a11, a clamp 4a13 arranged in the middle of the swing arm 4a12 for fixing the rotating frame 4a1 to the main shaft 2, and a plurality of connecting rods 4a14 respectively connected to the swing arm 4a12 and the arc-shaped mounting portion 4a11 at both ends.

[0031] As a preferred solution, Figure 4 As shown, the turbine 4a2 includes multiple arc-shaped turbine modules S4a2, each of which includes a turbine body S4a22 having gear teeth S4a21 and a clamping portion S4a23 disposed at both ends of the turbine body S4a22. The multiple turbine modules S4a2 can be assembled into the turbine 4a2 by the clamping portions S4a23. The clamping portions S4a23 here are a first buckle and a second buckle that match each other. In this way, the turbine module S4a2 can be designed in a standardized manner, and according to the angle adjustment range requirements of the specific solution, the flexible change of the adjustable angle range can be achieved by splicing and installing multiple sections of worm gear modules S4a2 of different specifications, which effectively reduces the product production cost and improves the product development efficiency.

[0032] In this example, the central angle of the turbine module S4a2 can be 15°, 30° and 60°, and can be freely spliced ​​and combined according to the adjustment angle requirements of the main shaft 2.

[0033] like Figure 2 and Figure 5 As shown, the tracking system also includes a plurality of reducers 8 arranged on the first tracking bracket A and corresponding to the plurality of drive components 4b one by one. The reducer 8 here is also arranged on the column 1, and has an input shaft 8a, a first output shaft 8b and a second output shaft 8c which are perpendicular to each other. The input shaft 8a and the first output shaft 8b can be connected to two adjacent first torque rods 6 respectively, and the second output shaft 8c can be connected to the worm. The reducer 8 here is a T-type reducer, which can drive the first torque rod 6 and the worm to rotate at the same time, wherein a universal joint 9 is arranged between the first torque rod 6 and the input shaft 8a, the first torque rod 6 and the first output shaft 8b, and a coupling 10 is arranged between the worm and the second output shaft 8c.

[0034] Furthermore, the power assembly 5 is a motor, and the output shaft of the motor is connected to the input shaft 8a of the reducer 8 at the head end of the first tracking bracket A.

[0035] In this way, through the setting of the motor and the T-type reducer, the motor drives the rotating unit 4 at the head end of the first tracking bracket A to rotate, and the first output shaft 8b of the T-type reducer synchronously transmits the rotation of the rotating unit 4 at the head end of the first tracking bracket A to other rotating units 4 on the first tracking bracket A, thereby realizing multi-point synchronous rotation; at the same time, the multi-point rotating units 4 can transmit their own rotational motion to the rotating units 4 on multiple rows of second tracking brackets B through the second output shaft 8c of the T-type reducer, thereby finally realizing multi-row and multi-point linkage of a motor-driven tracking system, thereby greatly reducing the production cost and electrical control cost of the photovoltaic bracket tracking system.

[0036] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-row linked multi-point driven flat single-axis tracking system, comprising a plurality of rows of mutually parallel tracking brackets, wherein each row of the tracking brackets comprises a plurality of columns (1), a main shaft (2) extending along the arrangement direction of the plurality of columns (1) and being rotatable around its own axis and mounted on the top of the plurality of columns (1), and a mounting assembly (3) for mounting a photovoltaic module disposed on the main shaft (2), characterized in that: The tracking system further comprises a plurality of rotating units (4) arranged on the main shaft (2) at intervals along the length extension direction of the main shaft (2) for driving the main shaft (2) to rotate, a power assembly (5) for providing power to the rotating units (4), a first torque rod (6) arranged along the length direction parallel to the main shaft (2), and a plurality of second torque rods (7) parallel to each other and perpendicular to the first torque rod (6). The plurality of rotating units (4) on at least one row of the tracking brackets are movably connected via the first torque rod (6), and the corresponding plurality of rotating units (4) on the plurality of rows of tracking brackets are movably connected via the second torque rod (7); The rotating unit (4) comprises a rotating assembly (4a) and a driving assembly (4b), wherein the rotating assembly (4a) comprises a rotating frame (4a1) having an arc-shaped mounting portion (4a11) fixedly mounted on the main shaft (2), and a turbine (4a2) mounted on the arc-shaped mounting portion (4a11), and the driving assembly (4b) comprises a worm gear mounted on the column (1) and meshing with the turbine gear (4a2), and the two ends of the second torque rod (7) are respectively connected to two corresponding worm gears on two adjacent rows of tracking brackets; The mounting assembly (3) comprises a plurality of purlins arranged at intervals along the length extension direction of the main axis (2).

2. According to claim 1, a multi-row linkage multi-point drive flat single-axis tracking system is characterized by: The tracking system further comprises a plurality of reducers (8) arranged on the tracking bracket connected to the first torque rod (6) and corresponding one-to-one to the plurality of drive assemblies (4b), the reducer (8) comprising an input shaft (8a), a first output shaft (8b) and a second output shaft (8c) perpendicular to each other, the input shaft (8a) and the first output shaft (8b) being respectively connectable to two adjacent first torque rods (6), and the second output shaft (8c) being connectable to the worm.

3. The multi-row linkage multi-point drive flat single-axis tracking system according to claim 2, characterized in that: The tracking system further comprises a universal joint (9) respectively arranged between the first torque rod (6) and the input shaft (8a), and between the first torque rod (6) and the first output shaft (8b).

4. The multi-row linkage multi-point drive flat single-axis tracking system according to claim 2, characterized in that: The tracking system further comprises a coupling (10) arranged between the worm and the second output shaft (8c).

5. The multi-row linkage multi-point drive flat single-axis tracking system according to claim 2, characterized in that: The output shaft of the power assembly (5) is connected to the input shaft (8a) of at least one of the reducers (8).

6. The multi-row linkage multi-point drive flat single-axis tracking system according to claim 1, characterized in that: The rotating frame (4a1) further comprises a swing arm (4a12) connected to the arc-shaped mounting portion (4a11), a clamp (4a13) provided in the middle of the swing arm (4a12) and used for fixing the rotating frame (4a1) to the main shaft (2), and a plurality of connecting rods (4a14) respectively connected to the swing arm (4a12) and the arc-shaped mounting portion (4a11) at both ends.

7. The multi-row linkage multi-point drive flat single-axis tracking system according to claim 1, characterized in that: The turbine (4a2) comprises a plurality of arc-shaped turbine modules (S4a2), each of which comprises a turbine body (S4a22) having gear teeth (S4a21) and clamping portions (S4a23) provided at both ends of the turbine body (S4a22), and the plurality of turbine modules (S4a2) can be matched and spliced ​​into the turbine (4a2) via the clamping portions (S4a23).

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