Linked dual-axis photovoltaic power station solar tracking system

Abstract

The present invention discloses a linkage dual-axis photovoltaic power station solar tracking system. By controlling the tracking program of two active elements, the east-west linkage slewing reducer and the electric push rod, the two spatial rotational degrees of freedom of the photovoltaic components of the entire array can be driven to complete the real-time tracking of the sun. The linkage reduces the number of drives, reduces the system risk, effectively reduces the installation height of the dual-axis tracking system, makes the overall layout more compact, facilitates installation and operation and maintenance, reduces the difficulty of basic construction, and enriches the customer's choice direction.

Description

Technical Field

[0001] The invention belongs to a photovoltaic power station solar tracking system, and in particular relates to a linked dual-axis photovoltaic power station solar tracking system. Background Art

[0002] In the current photovoltaic power station solar tracking system, the dual-axis trackers are mostly independent structures with a high overall layout height. They need to withstand large wind forces and are not easy to install and maintain. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a linked dual-axis photovoltaic power station solar tracking system, which realizes solar tracking of the entire photovoltaic array through linkage in the north-south and east-west directions.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A linkage dual-axis photovoltaic power station solar tracking system, comprising several rows of photovoltaic modules, each row having a plurality of photovoltaic modules arranged in a north-south direction, each photovoltaic module having a mounting bracket, characterized in that it also comprises a north-south linkage mechanism and an east-west linkage mechanism,

[0006] The north-south linkage mechanism includes a north-south rotating shaft, a north-south linkage rod, an electric push rod, and a north-south swing arm. A north-south rotating shaft and a north-south swing arm are installed on the mounting bracket of each photovoltaic module. A north-south linkage rod and an electric push rod are arranged on each row of photovoltaic modules. The north-south linkage rod is respectively hinged to the upper end of each north-south swing arm in the same row, and the lower end of the north-south swing arm is respectively connected to the corresponding north-south rotating shaft. The telescopic end of the electric push rod is hinged to the north-south linkage rod;

[0007] The east-west linkage mechanism includes an east-west linkage slewing reducer, an east-west linkage pull rod, an east-west linkage slewing square tube, and a push-pull arm. Each row of photovoltaic modules is provided with an east-west linkage slewing square tube and a push-pull arm. The east-west linkage slewing reducer is connected to the east-west linkage pull rod through a slewing drive arm. The east-west linkage pull rod is arranged along the east-west direction and is respectively hinged to the lower end of the push-pull arm of each row of photovoltaic modules. The upper end of the push-pull arm is connected to the east-west linkage slewing square tube. The east-west linkage slewing square tube is respectively connected to each north-south slewing shaft in the same row through a bearing assembly.

[0008] The bearing assembly comprises a pair of plastic bearings, which are connected by a fixing plate and a hexagonal bolt and arranged opposite to each other. The north-south rotating shaft is arranged in the two plastic bearings and passes through the east-west linked rotating square tube transversely.

[0009] The plastic bearing is made of ultra-high molecular weight polyethylene material.

[0010] A connecting transition block is provided at the lower end of the north-south swing arm. The lower end of the connecting transition block has a concave arc surface that is clamped with the north-south rotating shaft and is connected and fixed to the north-south rotating shaft by a hexagonal bolt.

[0011] The slewing drive arm and the push-pull arm have the same slewing radius.

[0012] The push-pull arm is connected and fixed with the east-west linkage rotating square tube through a clamp.

[0013] The tail end of the electric push rod is hinged to the east-west linkage rotating square tube.

[0014] The linkage dual-axis photovoltaic power station solar tracking system of the present invention can realize the driving of the two spatial rotational degrees of freedom of the photovoltaic components of the entire array and complete the real-time tracking of the sun by controlling the tracking program of the two active elements of the east-west linkage rotary reducer and the electric push rod. The linkage reduces the number of driving elements, reduces the system risk, effectively lowers the installation height of the dual-axis tracking system, makes the overall layout more compact, facilitates installation and operation and maintenance, reduces the difficulty of basic construction, and enriches the customer's choice direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 It is a schematic diagram of the structure of the photovoltaic module applied to the array of the present invention.

[0017] Figure 2 yes Figure 1 A magnified schematic diagram of part A in FIG.

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of a single-row photovoltaic module.

[0019] Figure 4 yes Figure 3 An enlarged schematic diagram of part B in FIG.

[0020] Figure 5 It is a structural schematic diagram of the bearing assembly of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the mounting bracket of the present invention. DETAILED DESCRIPTION

[0022] The linked dual-axis photovoltaic power station solar tracking system of the present invention is as follows Figures 1 to 6As shown, it includes several rows of photovoltaic modules 1, each row has a plurality of photovoltaic modules 1 arranged in the north-south direction, each photovoltaic module 1 has a mounting bracket 2 for mounting the photovoltaic module 1, and the mounting bracket 2 is composed of several mounting square tubes 3 arranged side by side in the north-south direction and a support block 5 fixed to the side of the mounting square tube 3 by rivets 4, as shown in FIG. Figure 6 The solar tracking system of the present invention further comprises a north-south linkage mechanism and an east-west linkage mechanism, wherein:

[0023] The north-south linkage mechanism includes a north-south rotating shaft 6, a north-south linkage rod 7, an electric push rod 8, and a north-south swing arm 9. A north-south rotating shaft 6 and a north-south swing arm 9 arranged in the east-west direction are installed on the mounting bracket 2 of each photovoltaic module 1. A north-south linkage rod 7 and an electric push rod 8 arranged in the north-south direction are arranged on each row of photovoltaic modules 1. The north-south linkage rod 7 is respectively hinged to the upper end of each north-south swing arm 9 in the same row, and the lower end of the north-south swing arm 9 is respectively connected to the corresponding north-south rotating shaft 6. The telescopic end of the electric push rod 8 is hinged to the north-south linkage rod 7;

[0024] The east-west linkage mechanism includes an east-west linkage rotary reducer 10, an east-west linkage pull rod 11, an east-west linkage rotary square tube 12, and a push-pull arm 13. Each row of photovoltaic components 1 is provided with an east-west linkage rotary square tube 12 and a push-pull arm 13 arranged along the north-south direction. The east-west linkage rotary reducer 10 is connected to the east-west linkage pull rod 11 through a rotary drive arm 14. The east-west linkage pull rod 11 is arranged along the east-west direction and is respectively hinged to the lower end of the push-pull arm 13 of each row of photovoltaic components 1. The upper end of the push-pull arm 13 is connected to the east-west linkage rotary square tube 12. The east-west linkage rotary square tube 12 is respectively connected to each north-south rotary shaft 6 in the same row through a bearing assembly 15.

[0025] As an embodiment, the bearing assembly 15 includes a pair of plastic bearings 151, the two plastic bearings 151 are connected by a fixing plate 152 and a hexagonal bolt 153 and are arranged opposite to each other and embraced on both sides of the east-west linkage rotating square tube 12, the north-south rotating shaft 6 is arranged in the two plastic bearings 151, and passes through the east-west linkage rotating square tube 12 horizontally, and a through hole for the north-south rotating shaft 6 to pass through is opened on the east-west linkage rotating square tube 12. Preferably, the plastic bearing 151 can be made of ultra-high molecular weight polyethylene material, see Figure 5 .

[0026] As an embodiment, the lower end of the north-south swing arm 9 is provided with a connecting transition block 16, the lower end of the connecting transition block 16 has a concave arc surface that is engaged with the north-south rotating shaft 6, and is connected and fixed to the north-south rotating shaft 6 by a hexagonal bolt 153, see Figure 4-6 .

[0027] As an embodiment, the slewing drive arm 14 and the push-pull arm have the same slewing radius.

[0028] As an embodiment, the push-pull arm is connected and fixed to the east-west linkage rotating square tube 12 via a clamp.

[0029] As an embodiment, the tail end of the electric push rod 8 is installed on the east-west linkage rotating square tube 12 through a hinge seat.

[0030] The above-mentioned east-west linked slewing reducer 10 can be arranged in the middle part of the photovoltaic components 1 close to the entire array, and the electric push rod 8 can be arranged in the middle part close to each row of photovoltaic components 1. In this way, the structure can try to ensure that the center of gravity of the rotation on each axis is close to the center of rotation, thereby minimizing the eccentric torque of the rotation.

[0031] In addition, the hinge structure can be made of a stainless steel pin and a copper bushing.

[0032] The action process of the entire linked dual-axis photovoltaic power station solar tracking system of the present invention is as follows:

[0033] The rotation of the east-west linkage rotary reducer 10 drives the rotary drive arm 14 to rotate, which in turn drives the east-west linkage rod 11, each push-pull arm 13, each row of east-west linkage rotary square tubes 12, and the north-south rotary shaft 6 to perform east-west linkage, thereby realizing the east-west rotation tracking of the photovoltaic components 1 of the array; through the unified extension and retraction of each row of electric push rods 8, each row of north-south linkage rods 7, each north-south swing arm 9, and the north-south rotary shaft 6 are driven in turn to deflect the north-south pitch angle, thereby realizing the north-south rotation tracking of the photovoltaic components 1 of the array.

[0034] In summary, the present invention realizes driving of two spatial rotational degrees of freedom of the photovoltaic assembly 1 and completes dual-axis linkage real-time tracking of the sun by tracking program control of two active elements, namely the rotary reducer and the electric push rod 8 .

[0035] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A linked dual-axis photovoltaic power station solar tracking system, comprising several rows of photovoltaic modules, each row having a plurality of photovoltaic modules arranged in a north-south direction, each photovoltaic module having a mounting bracket, characterized in that: It also includes north-south linkage mechanisms and east-west linkage mechanisms. The north-south linkage mechanism includes a north-south rotating shaft, a north-south linkage rod, an electric push rod, and a north-south swing arm. A north-south rotating shaft and a north-south swing arm are installed on the mounting bracket of each photovoltaic module. A north-south linkage rod and an electric push rod are arranged on each row of photovoltaic modules. The north-south linkage rod is respectively hinged to the upper end of each north-south swing arm in the same row, and the lower end of the north-south swing arm is respectively connected to the corresponding north-south rotating shaft. One end of the electric push rod is hinged to the north-south linkage rod; The east-west linkage mechanism includes an east-west linkage slewing reducer, an east-west linkage pull rod, an east-west linkage slewing square tube, and a push-pull arm. Each row of photovoltaic modules is provided with an east-west linkage slewing square tube and a push-pull arm. The east-west linkage slewing reducer is connected to the east-west linkage pull rod through a slewing drive arm. The east-west linkage pull rod is arranged along the east-west direction and is respectively hinged to the lower end of the push-pull arm of each row of photovoltaic modules. The upper end of the push-pull arm is connected to the east-west linkage slewing square tube. The east-west linkage slewing square tube is respectively connected to each north-south slewing shaft in the same row through a bearing assembly. The bearing assembly comprises a pair of plastic bearings, which are connected by a fixing plate and a hexagonal bolt and arranged opposite to each other. The north-south rotating shaft is arranged in the two plastic bearings and passes through the east-west linked rotating square tube transversely.

2. The linked dual-axis photovoltaic power station solar tracking system according to claim 1, characterized in that: The plastic bearing is made of ultra-high molecular weight polyethylene material.

3. The linked dual-axis photovoltaic power station solar tracking system according to claim 1, characterized in that: A connecting transition block is provided at the lower end of the north-south swing arm. The lower end of the connecting transition block has a concave arc surface that is clamped with the north-south rotating shaft and is connected and fixed to the north-south rotating shaft by a hexagonal bolt.

4. The linked dual-axis photovoltaic power station solar tracking system according to claim 1, characterized in that: The slewing drive arm and the push-pull arm have the same slewing radius.

5. The linked dual-axis photovoltaic power station solar tracking system according to claim 1, characterized in that: The push-pull arm is connected and fixed with the east-west linkage rotating square tube through a clamp.

6. The linked dual-axis photovoltaic power station solar tracking system according to claim 1, characterized in that: The tail end of the electric push rod is hinged to the east-west linkage rotating square tube.

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