Large-span H-type photovoltaic array support tracking system and tracking method

Abstract

A tracking system and tracking method for a large-span H-type photovoltaic array support, wherein the tracking system includes: at least one H-type photovoltaic support fixed on a plurality of longitudinally arranged pipe piles; a reinforcing rod installed transversely between the first row of photovoltaic support bodies and the second row of photovoltaic support bodies; a high-thrust drive screw disposed at one end of the reinforcing rod to drive the rotation of the photovoltaic main shaft on the first row of photovoltaic support bodies; and a push rod disposed transversely between the first row of photovoltaic support bodies and the second row of photovoltaic support bodies to drive the rotation of the photovoltaic main shaft on the second row of photovoltaic support bodies under the drive of the high-thrust drive screw. Since the reinforcing rod and other structures are added between the two rows of photovoltaic support bodies, the pile distance between the pipe piles of the prior art can be increased to 12.5M, reducing the number of pile foundations of the entire photovoltaic array support, not only reducing the cost, but also further improving the land utilization rate under the photovoltaic array support.

Description

Field of the Invention

[0001] The invention relates to a solar photovoltaic array, and in particular to a large-span H-type photovoltaic array bracket tracking system and a tracking method. Background Art

[0002] Solar photovoltaic panels, especially large-area solar photovoltaic panel arrays or photovoltaic systems, when installed on the ground or on the water, need to track the movement of the sun in real time and adjust the direction of the photovoltaic components (for example, from east to west) so that the sunlight directly hits the light-receiving plane of the photovoltaic panel to increase photovoltaic power generation. In the existing photovoltaic support tracking system, the support body is, for example, erected on a cement pile foundation, and the distance between each pile foundation is no longer than 8 meters. Therefore, the entire support tracking system occupies a large area, which is not conducive to the comprehensive utilization of land.

[0003] Another example Figure 8 The Chinese patent application No. 201510559989.4 disclosed a prestressed steel cable photovoltaic support system, which uses steel cables as support components, can achieve a large-span support form, use fewer support points, and occupy less ground area. However, in this solution using steel cables as support components, the solar photovoltaic panel is directly installed on the steel cables, and the steel cables cannot rotate with the sunlight, so the photovoltaic panel cannot track the movement of the sun in real time. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a large-span H-type photovoltaic array support tracking system and tracking method.

[0005] According to one aspect of the present invention, a large-span H-type photovoltaic array support tracking system is provided, which comprises:

[0006] At least one H-shaped photovoltaic support, including a first row of photovoltaic support bodies and a second row of photovoltaic support bodies, respectively fixed on a plurality of longitudinally arranged pipe piles;

[0007] The reinforcing rod is installed transversely between the first row of photovoltaic bracket bodies and the second row of photovoltaic bracket bodies;

[0008] A high-thrust driving screw rod is arranged at one end of the reinforcing rod and is used to drive the rotation of the photovoltaic main shaft on the first row of photovoltaic bracket bodies;

[0009] The push rod is transversely arranged between the first row of photovoltaic bracket bodies and the second row of photovoltaic bracket bodies, and is used to drive the rotation of the photovoltaic main shaft on the second row of photovoltaic bracket bodies under the drive of the large thrust driving screw.

[0010] The system further comprises an intermediate pipe pile for supporting the reinforcing rod, wherein the intermediate pipe pile is arranged between the first row of photovoltaic support bodies and the second row of photovoltaic support bodies.

[0011] The system also includes a reinforcing extension rod extending from the reinforcing rod to another H-shaped photovoltaic support.

[0012] The system also includes a main swing arm arranged between the large-thrust driving screw, the photovoltaic main shaft on the first row of photovoltaic bracket bodies and the push rod.

[0013] In the system, the main swing arm includes a main shaft connecting part fixedly connected to the photovoltaic main shaft on the first row of photovoltaic bracket bodies, a short arm movably connected to the high-thrust driving screw, and a long arm movably connected to the push rod.

[0014] The system also includes a secondary swing arm arranged between the push rod and the photovoltaic main shaft on the second row of photovoltaic bracket bodies.

[0015] In the system, the auxiliary swing arm includes a main shaft connecting part fixedly connected to the photovoltaic main shaft on the second row photovoltaic bracket body, a short arm and a long arm movably connected to the push rod.

[0016] In the system, the main shaft connecting parts of the main swing arm and the auxiliary swing arm are fixedly connected to the photovoltaic main shaft through flanges.

[0017] In the system, a connecting rod is provided between the short arm and the long arm of the main swing arm / auxiliary swing arm, on which a crankshaft bearing seat is sleeved and fixed to the pipe pile through a vertical rod.

[0018] According to another aspect of the present invention, a large-span H-type photovoltaic array support tracking method is provided, wherein the photovoltaic array support comprises at least one H-type photovoltaic support consisting of a first column of photovoltaic support bodies and a second column of photovoltaic support bodies, a reinforcing rod transversely mounted in the middle of the first column of photovoltaic support bodies and the second column of photovoltaic support bodies, a large thrust drive screw rod arranged at one end of the reinforcing rod, and a push rod transversely arranged between the first column of photovoltaic support bodies and the second column of photovoltaic support bodies, and the method comprises the following steps:

[0019] The large thrust driving screw drives the rotation of the photovoltaic main shaft on the main body of the first row of photovoltaic brackets;

[0020] Under the driving of the large-thrust driving screw, the photovoltaic main shaft on the second row of photovoltaic bracket bodies is driven to rotate through the push rod;

[0021] The reinforcing rod is used to share the force acting on the first column photovoltaic support body and the second column photovoltaic support body when the photovoltaic main shaft rotates.

[0022] According to the large-span H-type photovoltaic array bracket tracking system of the present invention, since reinforcing rods and other structures are added between the two rows of photovoltaic bracket bodies, the pile distance between the pipe piles in the prior art can be increased to 12.5M, reducing the number of pile foundations of the entire photovoltaic array bracket, which not only reduces the cost but also further improves the land utilization rate under the photovoltaic array bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A and 1B They are respectively overall schematic diagrams of a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention.

[0024] Figure 2A and 2B They are respectively Figure 1A and 1B A partially enlarged schematic diagram of the H-shaped photovoltaic support in which an intermediate pipe pile, a reinforcing rod and a reinforcing extension rod are set in the middle part.

[0025] Figure 3A and 3B They are schematic diagrams showing a transmission mechanism in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention; Figure 3C Yes means Figure 3A and 3B Schematic diagram of a main swing arm in the transmission mechanism shown.

[0026] Figure 4A The diagram is a schematic diagram showing the installation of a photovoltaic main axis in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention. Figure 4B yes Figure 4A A partial enlarged schematic diagram of .

[0027] Figure 5A The diagram is a schematic diagram showing the connection between the photovoltaic main shaft and the flange in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention.

[0028] Figure 5B yes Figure 5A A partial enlarged schematic diagram of .

[0029] Figure 6 It is a schematic diagram showing the installation of the vertical pole 112 and the pipe pile 11 in the photovoltaic main shaft installation schematic diagram shown in FIG. 4 .

[0030] Figure 7 It is a schematic diagram showing that the photovoltaic components are installed on the photovoltaic main shaft in the photovoltaic main shaft installation schematic diagram shown in Figure 4.

[0031] Figure 8 It is a schematic diagram of a large-span photovoltaic support in the prior art. DETAILED DESCRIPTION

[0032] The following will describe in detail the large-span H-type photovoltaic array bracket tracking system of the present invention in combination with the drawings and embodiments. Those skilled in the art will understand that the embodiments shown in the drawings are merely schematic and are used to help understand the basic concept of the present invention.

[0033] Figure 1A and 1B They are respectively the overall schematic diagrams of a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention. Figure 1A and 1B The large-span H-type photovoltaic array bracket tracking system includes at least one H-type photovoltaic bracket 10. The H-type photovoltaic bracket 10 includes two adjacent rows of photovoltaic bracket bodies 12, namely, a first row of photovoltaic bracket bodies and a second row of photovoltaic bracket bodies, and a reinforcing rod 13 arranged in the middle of the bracket body 12. The bracket body 12 is arranged on a plurality of longitudinally arranged pipe piles 11, which are, for example, prefabricated cement and driven into the ground or under the riverbed. According to one embodiment of the present invention, the diameter of the pipe pile 11 is, for example, set to 400 mm, which is larger than the pipe pile of an ordinary photovoltaic bracket, so that it can withstand a greater gravity shared due to the large span.

[0034] The reinforcing rod 13 is arranged perpendicularly to the support body 12, for example, and an intermediate pipe pile 18 is arranged under the reinforcing rod 13 to support it, and the diameter of the intermediate pipe pile 18 is arranged to be the same as that of the pipe pile 11, for example, so that it can bear part of the pressure shared by the reinforcing rod 13. The solar photovoltaic components 15 are arranged on the support body 12. As shown in the figure, 12 groups of photovoltaic components 15 are arranged on each H-type photovoltaic support 10. Of course, according to other embodiments of the present invention, the number of photovoltaic components 15 arranged on each H-type photovoltaic support 10 can be determined according to the site and specific application.

[0035] According to the large-span H-type photovoltaic array support tracking system of the present invention, the maximum pile distance between each pipe pile 11 along the length direction of the array, for example, along the north-south direction, is set to 12.5M, which is much longer than the conventional pile distance of less than 8M, thereby realizing a large-span layout, which not only reduces the site occupancy rate and is beneficial to the comprehensive utilization of land under the photovoltaic array, but also further reduces the system establishment and maintenance costs due to the reduction in the number of pile foundations of the pipe piles.

[0036] Still refer to Figure 1A and 1BAccording to an embodiment of the present invention, the H-type photovoltaic support 10 further includes a reinforcing extension rod 131, which extends outwardly and in parallel from the reinforcing rod 13 to the top of the pipe pile 11 of the adjacent H-type photovoltaic support 10. The arrangement of the intermediate pipe pile 18, the reinforcing rod 13 and the reinforcing extension rod 131 shares part of the force of the first column photovoltaic support body and the second column photovoltaic support body and the pipe piles 11 on both sides in the H-type photovoltaic support 10, and better ensures the realization of the large-span H-type photovoltaic array support tracking system.

[0037] Figure 2A and 2B They are respectively Figure 1A and 1B The middle part of the H-shaped photovoltaic support 10 is provided with a middle pipe pile 18, a reinforcing rod 13 and a reinforcing extension rod 131. Figure 2A and 2B , the reinforcing rod 13 is fixedly arranged at the top of the middle pipe pile 18, for example, it is made of channel steel, and a large thrust driving screw (commercially available large thrust electric push rod) 14 is arranged at one end. According to one embodiment of the present invention, the large thrust driving screw 14 is arranged on one side of a photovoltaic support body 12 of the H-type photovoltaic support 10, so as to directly drive the rotation of the photovoltaic main shaft 20 installed on the photovoltaic support body of the column. Although the large thrust driving screw 14 shown in the figure is installed on the left side of the H-type photovoltaic support 10, it can also be installed on the right side. At the same time, the large thrust driving screw 14 also drives the push rod 19 to move back and forth in parallel along the east-west direction, thereby driving the rotation of the photovoltaic main shaft (not shown) installed on the other photovoltaic support body 12 of the H-type photovoltaic support 10, and further driving the photovoltaic assembly (not shown) to rotate along the east-west direction to track the movement of the sun. According to a preferred embodiment of the present invention, the transmission direction of the large thrust driving screw 14 is preferably the up and down movement direction, so that the anti-sinking pressure ability of the pipe pile 11 can be fully utilized. A reinforcing extension rod 131, for example, extends outward in parallel from one end of the reinforcing rod 13 to the top of a pipe pile 11 in an adjacent H-type photovoltaic bracket 10. It is also made of channel steel, for example, which not only ensures the stable connection between the two adjacent H-type photovoltaic brackets 10, but also shares part of the force on other pipe piles, thereby ensuring the stability of the pipe pile foundation.

[0038] According to other embodiments of the present invention, in addition to the middle portion of the H-shaped photovoltaic support 10 , the middle pipe pile 18 , the reinforcing rod 13 and / or the reinforcing extension rod 131 may also be arranged at other portions of the H-shaped photovoltaic support 10 .

[0039] According to one embodiment of the present invention, an H-type photovoltaic bracket 10 is provided with a large thrust drive screw 14. As shown in the figure, the large thrust drive screw 14 is provided on one of two adjacent columns of the bracket body 12 of the H-type photovoltaic bracket 10, and the photovoltaic main shaft (not shown) on the bracket body (first column photovoltaic bracket body) 12 is driven to rotate through the main swing arm 161, and the photovoltaic main shaft on the other column of the bracket body (second column photovoltaic bracket body) 12 is driven to rotate through the push rod 19 and the auxiliary swing arm 162, so that the photovoltaic assembly 15 installed on the H-type photovoltaic bracket 10 can synchronously track the movement of the sun.

[0040] Figure 3A and 3B They are schematic diagrams showing a transmission mechanism in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention; Figure 3C Yes means Figure 3A and 3B Schematic diagram of a main swing arm in the transmission mechanism shown in FIG. Figures 3A to 3C The main swing arm 161 includes a short arm 1611 and a long arm 1612 which are basically vertically arranged, and a connecting rod 1613 connected between the short arm 1611 and the long arm 1612. The connecting rod 1613 is sleeved with a crankshaft bearing seat 1614, and is fixed to the pipe pile 11 through the vertical rod 112. The short arm 1611 and the long arm 1612 are respectively provided with a plurality of through holes 1615 and 1616, for example, at positions close to the connecting rod 1613 (i.e., the pivot portion), and the outer sides of the short arm 1611 and the long arm 1612 are respectively riveted or screwed to a flange (not shown) through the through holes 1615 and 1616, and are fixed to the photovoltaic main shaft 20 through the flange. As shown in the figure, the top of the large thrust driving screw rod 14 is movably connected to the end of the short arm 1611 of the main swing arm 161 by riveting or screwing, and drives the short arm 1611 through up and down movement, thereby driving the photovoltaic main shaft 20 and the photovoltaic assembly 15 to move with the movement of the sun. At the same time, the end of the long arm 1612 is movably connected to the end of the push rod 19 by riveting or screwing, for example. Since it is basically vertical to the short arm 1611, the long arm 1612 is driven by the short arm 1611 to basically move back and forth in the horizontal direction, and then drives the push rod 19 to move back and forth in the horizontal direction. According to one embodiment of the present invention, the length ratio of the long arm 1612 to the short arm 1611 is set to 2:1, for example. The reason why the long arm 1612 is set to be longer is to effectively reduce the larger torque generated by the photovoltaic bracket due to the large span through the longer force arm. Therefore, in fact, the length ratio of the long arm 1612 to the short arm 1611 is not limited to 2:1, and can also be determined according to the actual situation of the photovoltaic bracket.

[0041] According to the above-mentioned embodiment of the present invention, a high-thrust driving screw 17 is arranged on one of the two adjacent columns of the bracket body 12 of the H-type photovoltaic bracket 10, and the photovoltaic main shaft 20 on the bracket body 12 is driven to rotate through the main swing arm 161, and the photovoltaic main shaft 20 on the other column of the bracket body 12 is driven to rotate through the push rod 19 and the auxiliary swing arm 162. Among them, the auxiliary swing arm 162 also includes a short arm and a long arm. Similar to the main swing arm 161, the connecting rod 1623 is, for example, sleeved with a crankshaft bearing seat 1614, and is fixed to the pipe pile 11 through the vertical rod 112. The auxiliary swing arm 162 is also provided with a plurality of through holes, for example, at a position close to the main shaft connection portion, and is fixedly connected to the end of the photovoltaic main shaft 20, for example, through a flange (not shown). The end of the long arm of the auxiliary swing arm 162 is movably connected to the end of the other end of the push rod 19, for example, by riveting or screwing. When the push rod 19 makes horizontal reciprocating motion under the drive of the main swing arm 161, the auxiliary swing arm 162 can drive the photovoltaic main axis 20 installed thereon and then drive the photovoltaic component 15 to follow the movement of the sun.

[0042] Figure 4A is a schematic diagram showing the installation of a photovoltaic main shaft in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention; Figure 4B yes Figure 4A A partial enlarged schematic diagram of . Figure 1A , 1B and Figure 4A , 4B Since an H-type photovoltaic support 10 is usually provided with only one large thrust driving screw 14, when the main swing arm 161 and the auxiliary swing arm 162 as described above are driven directly or indirectly (through the push rod 19) by the large thrust driving screw 14, the photovoltaic main shafts 20 at the center position of the two rows of support bodies 12 are driven to rotate, so multiple photovoltaic main shafts 20 installed on other pipe piles 11 are butted in pairs, for example, through flanges 40. That is, the ends of the two butted photovoltaic main shafts 20 are fixedly installed with flanges 40 by welding or other means, and the ends of the two butted photovoltaic main shafts 20 are fixed, for example, by bolts 401 and through holes (not shown) on the flange 40.

[0043] Figure 5A is a schematic diagram showing the connection between the photovoltaic main shaft and the flange in a large-span H-type photovoltaic array support tracking system according to an embodiment of the present invention; Figure 5B yes Figure 5A A partial enlarged schematic diagram of . Figure 4A , 4B and Figure 5A , 5B, a flange 40 is fixed to one end 201 of the photovoltaic main shaft 20, for example, by welding, and the latter is connected to the swing arm 161 or 162 by screwing or riveting as described above. A double flange 40' is fixed to the other end 202 of the photovoltaic main shaft 20, for example, by welding, and the latter is provided with a through hole 406, and is connected to another photovoltaic main shaft 20 by screwing or riveting as described above. Different from the flange 40, a protrusion 403 is provided at the upper end of the double flange 40', and a through hole 404 is opened on it, and the latter is used to be sleeved on the pin 502 of the bearing seat 50. The bearing seat 50 is fixed on the pipe pile 11 through the vertical rod 112, so that when the photovoltaic main shaft 20 located at a non-central position on the support body 12 is indirectly rotated by the large thrust drive screw 14 or the push rod 19, its rotation center is lifted to the protrusion 403 of the double flange 40' (that is, on the pin of the bearing seat 50), which is located at the main shaft connection relative to the conventional rotation center, thereby reducing the eccentric moment. According to one embodiment of the present invention, the photovoltaic main shaft 20, for example, adopts a large-sized cross-section, such as a cross-section with a diameter of 200 to 230 mm, preferably a cross-section of 219 mm, so that it can better withstand the greater torque generated by the reduction of large-span pipe piles.

[0044] Figure 6 4 is a schematic diagram showing the installation of the vertical pole 112 and the pipe pile 11. Figure 6 The bottom of the vertical pole 112 is provided with a bottom plate 1121, and the bottom plate 1121 is provided with a plurality of through holes (not shown), and the top of the pipe pile 11 is provided with a mounting plate 117, and the mounting plate 117 is provided with screw holes 1171 or nuts (not shown), and the bottom plate 1121 and the mounting plate 117 are fixed by bolts, for example. According to another embodiment of the present invention, a plurality of screw holes 1171 or nuts on the mounting plate 117 can be provided around the circumference, so that the bottom plate 1121 can be selectively mounted on a plurality of screw holes 1171 or nuts, so as to correct the offset caused by the deviation of the pile driving position.

[0045] Figure 7 It is a schematic diagram showing that the photovoltaic modules are installed on the photovoltaic main shaft in the photovoltaic main shaft installation schematic diagram shown in Figure 4. Figure 7 , the photovoltaic assembly 15 is fixed on the photovoltaic main shaft 20 through the main shaft clamp 201. In more detail, the upper half of the main shaft clamp 201 is fixedly connected to the assembly lower seat 151 on which the photovoltaic assembly 15 is installed, and the lower half of the main shaft clamp 201 is fixedly connected to the assembly lower seat support 152 connected to the assembly lower seat 151. When the photovoltaic main shaft 20 drives the main shaft clamp 201 to rotate, the photovoltaic assembly 15 installed on the assembly lower seat 151 also rotates accordingly, so that it can track the movement of the sun under the drive of the high-thrust driving screw 14.

[0046] According to a large-span H-type photovoltaic array support tracking method of the present invention, the photovoltaic array support includes at least one H-type photovoltaic support consisting of a first column photovoltaic support body and a second column photovoltaic support body, a reinforcing rod installed transversely in the middle of the first column photovoltaic support body and the second column photovoltaic support body, a large thrust drive screw rod arranged at one end of the reinforcing rod, and a push rod arranged transversely between the first column photovoltaic support body and the second column photovoltaic support body, and the method includes the following steps:

[0047] The large thrust driving screw drives the rotation of the photovoltaic main shaft on the main body of the first row of photovoltaic brackets;

[0048] Under the driving of the large-thrust driving screw, the photovoltaic main shaft on the second row of photovoltaic bracket bodies is driven to rotate through the push rod;

[0049] The reinforcing rod is used to share the force acting on the first column photovoltaic support body and the second column photovoltaic support body when the photovoltaic main shaft rotates.

[0050] In one embodiment of the present invention, an intermediate pipe pile disposed at the bottom of the reinforcing rod is used to share the force borne by the reinforcing rod.

[0051] Although the large-span H-type photovoltaic array support tracking system and tracking method of the present application have been described above according to the preferred embodiments and application examples, according to the above concept of the present application, a person of ordinary skill in the art may make various modifications to the system and method described in the present application without departing from the concept, spirit and scope of the present application. In addition, modifications may be made to the device disclosed in the present application and the same or similar results may be achieved. All such similar substitutions and modifications that are obvious to a person of ordinary skill in the art are deemed to be within the spirit, scope and concept of the present application as defined by the appended claims.

Claims

1. A large-span H-type photovoltaic array support tracking system, comprising: At least one H-shaped photovoltaic support, including a first row of photovoltaic support bodies and a second row of photovoltaic support bodies, respectively fixed on a plurality of longitudinally arranged pipe piles; A reinforcing rod and a reinforcing extension rod made of channel steel, wherein the reinforcing rod is transversely installed in the middle of the first column photovoltaic bracket body and the second column photovoltaic bracket body, and is fixedly installed at the top of an intermediate pipe pile, wherein the intermediate pipe pile is arranged between the first column photovoltaic bracket body and the second column photovoltaic bracket body, and shares the force borne by the reinforcing rod, wherein the reinforcing rod shares the force acting on the first column photovoltaic bracket body and the second column photovoltaic bracket body when the photovoltaic main shaft rotates, and the reinforcing extension rod extends outwardly and in parallel from the reinforcing rod to the top of the pipe pile of the adjacent H-type photovoltaic bracket, and the arrangement of the intermediate pipe pile, the reinforcing rod and the reinforcing extension rod shares part of the force on the first column photovoltaic component body and the second column photovoltaic bracket body and the pipe piles on both sides; A high-thrust driving screw rod is arranged at one end of the reinforcing rod and is used to drive the rotation of the photovoltaic main shaft on the first row of photovoltaic bracket bodies; The push rod is transversely arranged between the first row of photovoltaic bracket bodies and the second row of photovoltaic bracket bodies, and is used to drive the rotation of the photovoltaic main shaft on the second row of photovoltaic bracket bodies under the drive of the large thrust driving screw rod. The large thrust driving screw drives the rotation of the photovoltaic main shaft on the first row of photovoltaic bracket bodies through the main swing arm, and drives the rotation of the photovoltaic main shaft on the second row of photovoltaic bracket bodies through the push rod and the auxiliary swing arm.

2. The system according to claim 1, characterized in that The intermediate pipe pile is used to support the reinforcing rod.

3. The system according to claim 1, characterized in that The main swing arm is arranged between the large-thrust driving screw, the photovoltaic main shaft on the first row of photovoltaic bracket bodies and the push rod.

4. The system according to claim 3, characterized in that The main swing arm includes a main shaft connecting part fixedly connected to the photovoltaic main shaft on the first row of photovoltaic bracket bodies, a short arm movably connected to the high-thrust driving screw, and a long arm movably connected to the push rod.

5. The system according to claim 4, characterized in that The auxiliary swing arm is arranged between the push rod and the photovoltaic main axis on the second row of photovoltaic bracket bodies.

6. The system according to claim 5, characterized in that The auxiliary swing arm includes a main shaft connecting part fixedly connected to the photovoltaic main shaft on the second row photovoltaic bracket body, a short arm and a long arm movably connected to the push rod.

7. The system according to claim 4 or 6, characterized in that The main shaft connecting parts of the main swing arm and the auxiliary swing arm are fixedly connected to the photovoltaic main shaft through flanges.

8. The system according to claim 4 or 6, characterized in that: A connecting rod is provided between the short arm and the long arm of the main swing arm / auxiliary swing arm, on which a crankshaft bearing seat is sleeved and fixed to the pipe pile through a vertical rod.

9. A tracking method for a large-span H-type photovoltaic array support tracking system as claimed in claim 1, the method comprising the following steps: The large thrust driving screw drives the rotation of the photovoltaic main shaft on the first row of photovoltaic bracket bodies; Under the driving of the large-thrust driving screw, the photovoltaic main shaft on the second row of photovoltaic bracket bodies is driven to rotate through the push rod; The reinforcing rod is used to share the force acting on the first column photovoltaic support body and the second column photovoltaic support body when the photovoltaic main shaft rotates.

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