A photovoltaic bracket welding assembly

Abstract

This utility model provides a photovoltaic bracket welding assembly, belonging to the field of photovoltaic bracket welding technology. The photovoltaic bracket welding assembly includes: a support body, a connecting plate, a fixing component, an adjustment mechanism, and a welding seat. The support body has an inverted trapezoidal frame structure, with an installation groove at the top containing the connecting plate. The connecting plate has a rectangular plate structure, with a through hole in the center and four bolt holes evenly distributed around the through hole. The fixing component includes a fixing base and a fixing rod. The fixing base is fixedly installed at the bottom of the support body, and one end of the fixing rod is connected to the fixing base via the welding seat, which has a cylindrical structure. The adjustment mechanism includes an adjustment shaft and an adjustment arm. The adjustment shaft passes through an adjustment hole in the side wall of the support body and connects to the through hole in the connecting plate. This invention solves the technical problems of insufficient structural stability, difficulty in angle adjustment, and poor welding connection reliability in existing photovoltaic bracket welding assemblies.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic bracket welding technology, and more specifically, it relates to a photovoltaic bracket welding assembly. Background Technology

[0002] With the rapid development of renewable energy technologies, photovoltaic (PV) power generation systems have been widely applied globally. As a crucial component of PV power generation systems, the performance of PV support structures directly impacts the installation quality and power generation efficiency of PV panels. Traditional PV support welding assemblies often employ simple rectangular frame structures, which are prone to deformation under strong wind loads, particularly in windy environments such as coastal areas and mountainous regions, where stability issues are especially prominent. Existing angle adjustment mechanisms typically use fixed designs, failing to adjust the tilt angle of PV panels according to seasonal changes and geographical variations, resulting in suboptimal PV power generation efficiency. Regarding welding connections, traditional welding assemblies often use single bolt connections or simple welding methods, offering limited connection strength and prone to loosening over long-term use, affecting the overall structural safety. Furthermore, existing support structures are often too bulky, increasing transportation costs and installation difficulty, while also resulting in low material utilization and resource waste. In practical applications, PV support structures need to withstand various complex load conditions such as wind loads, snow loads, and seismic loads, placing higher demands on structural reliability and durability. Therefore, there is an urgent need to develop a new type of PV support welding assembly that is structurally stable, flexible in adjustment, and reliably connected. Utility Model Content

[0003] In view of this, the present invention provides a photovoltaic bracket welding assembly that can solve the technical problems of insufficient structural stability, difficulty in angle adjustment, and poor welding connection reliability of existing photovoltaic bracket welding assemblies.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a photovoltaic bracket welding assembly, comprising: a support body, a connecting plate, a fixing component, an adjustment mechanism, and a welding seat; the support body has an inverted trapezoidal frame structure, with a mounting groove at the top of the support body, and the connecting plate is installed in the mounting groove; the connecting plate has a rectangular plate structure, with a through hole in the middle of the connecting plate, and four bolt holes evenly distributed around the through hole; the fixing component includes a fixing base and a fixing rod, the fixing base being fixedly installed at the bottom of the support body, and one end of the fixing rod being connected to the fixing base via the welding seat, the welding seat having a cylindrical structure; the adjustment mechanism includes an adjustment shaft and an adjustment arm, the adjustment shaft passing through an adjustment hole in the side wall of the support body and connecting to the through hole in the connecting plate, the adjustment arm being fixedly connected to one end of the adjustment shaft for driving the adjustment shaft to rotate; the inner wall of the welding seat has a threaded structure, the fixing rod being connected to the welding seat via a threaded connection, and the support body and the connecting plate forming a hinge relationship via the adjustment shaft for adjusting the angle of the connecting plate relative to the support body.

[0006] The technical advantages of the photovoltaic bracket welding assembly provided by this utility model are as follows: the inverted trapezoidal frame structure design of the supporting body provides a stable load-bearing foundation; the connecting plate forms a hinged relationship with the supporting body through the adjusting shaft, realizing the precise adjustment of the photovoltaic panel installation angle; the fixing assembly is connected to the fixing rod through the threaded connection of the welding seat, ensuring the overall structure's robustness and detachability; the setting of the adjustment mechanism makes the photovoltaic panel angle adjustment operation simple and quick; the overall structure is compact and reasonable, effectively improving the installation efficiency and usage stability of the photovoltaic bracket.

[0007] Based on the above technical solution, the photovoltaic bracket welding assembly of this utility model can be further improved as follows:

[0008] The supporting structure includes a main frame and reinforcing ribs. The main frame is formed by welding four steel bars to form an inverted trapezoidal structure. The reinforcing ribs are located inside the main frame, and the connection points between the reinforcing ribs and the main frame are connected by welds. The main frame is made of stainless steel, the reinforcing ribs are made of carbon steel, and the wall thickness of the main frame is 3mm to 5mm.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the main frame adopts an inverted trapezoidal structure design, which enhances the wind load resistance and overall stability of the supporting body; the internal setting of the reinforcing ribs further improves the load-bearing strength of the frame; the stainless steel main frame has excellent corrosion resistance; the carbon steel reinforcing ribs reduce costs while ensuring strength; the wall thickness design of 3mm to 5mm achieves reasonable weight control while meeting strength requirements; and the welded connection method ensures a reliable combination between the reinforcing ribs and the main frame.

[0010] Furthermore, the connecting plate includes a main body and a protrusion. The main body has a rectangular structure, and the protrusion is disposed on the upper surface of the main body and extends along the length direction of the main body. The cross-section of the protrusion is trapezoidal, and the height of the protrusion is 1.5 to 2 times the thickness of the main body. The protrusion and the main body are connected by an integral molding method.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the rectangular main body structure of the connecting plate provides sufficient photovoltaic panel installation area; the trapezoidal cross-section design of the protrusion enhances the bending strength and stiffness of the connecting plate; the arrangement of the protrusion extending along the length direction effectively disperses the load transmitted by the photovoltaic panel; the protrusion height design of 1.5 to 2 times the thickness ratio enhances the structural strength while avoiding excessive weight increase; the one-piece molding connection method eliminates weak links in the connection and improves the overall reliability and service life of the connecting plate.

[0012] Furthermore, the fixing assembly also includes a locking nut and a washer. The locking nut is located at the end of the fixing rod, and the washer is located between the locking nut and the welding seat. The fixing rod has a hexagonal cross-section, a length of 150mm to 300mm, and a threaded connection length between the fixing rod and the welding seat of 20mm to 40mm.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the setting of the locking nut realizes the adjustability and maintainability of the connection between the fixing rod and the welding seat; the addition of the gasket effectively disperses the compressive stress of the threaded connection and provides sealing protection; the hexagonal cross-section design of the fixing rod facilitates the operation of the wrench tool and prevents rotation and slippage; the length range of 150mm to 300mm adapts to the needs of different installation heights; and the threaded connection length of 20mm to 40mm ensures the connection strength while facilitating the assembly and disassembly operation.

[0014] Furthermore, the adjustment mechanism also includes a limiting block and an elastic washer. The limiting block is fixedly installed on the side wall of the support body, and a mechanical limit is formed between the limiting block and the adjustment arm. The elastic washer is sleeved on the adjustment shaft and is located between the connecting plate and the support body to provide adjustment damping.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the setting of the limit block effectively controls the rotation range of the adjusting arm, preventing structural damage caused by excessive rotation; the mechanical limiting relationship between the limit block and the adjusting arm provides a precise angle positioning function; the setting of the elastic washer provides appropriate damping sensation for the adjustment operation, enhancing the accuracy and stability of angle adjustment; the elastic washer also has shock absorption and buffering effects, effectively protecting the various components of the adjusting mechanism and extending its service life.

[0016] Furthermore, the welding seat includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are arranged in concentric circles, and the outer cylinder is connected to the fixed base by an annular weld; the inner wall of the inner cylinder is provided with a left-hand thread, the inner wall of the outer cylinder is provided with a right-hand thread, and a sealing ring is provided between the inner cylinder and the outer cylinder.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the concentric circle arrangement of the outer cylinder and the inner cylinder forms a double-layer structure, which significantly improves the load-bearing capacity and deformation resistance of the welding seat; the circumferential weld connection method ensures 360-degree full-circumference welding between the outer cylinder and the fixed base, providing uniform load transfer; the differentiated design of left-hand and right-hand threads achieves a double locking effect, effectively preventing loosening; and the sealing ring provides good waterproof and dustproof performance, protecting the internal thread structure.

[0018] Furthermore, in the inverted trapezoidal structure of the supporting body, the length of the upper base is 0.6 to 0.8 times the length of the lower base, and the height of the inverted trapezoid is 150 mm to 250 mm.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design ratio of the upper base length to the lower base length of the inverted trapezoidal structure gives it excellent anti-overturning stability and effectively resists wind loads and other lateral loads. The height range of 150mm to 250mm controls the amount of material used while ensuring structural strength. The geometry of the inverted trapezoid makes the load transfer path more reasonable and the stress distribution more uniform, which significantly improves the load-bearing performance and safety of the supporting structure.

[0020] Furthermore, in the rectangular structure of the connecting plate, the ratio of the length direction to the width direction is 1.5:1 to 2:1, and the thickness of the connecting plate is 8mm to 12mm.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the length-to-width ratio design of 1.5 to 1 to 2 to 1 gives the connecting plate a reasonable geometric shape, which not only ensures the installation area of ​​the photovoltaic panel but also avoids insufficient rigidity caused by the slender structure. The thickness range of 8mm to 12mm achieves optimized weight control while meeting the strength requirements. The reasonable geometric size ratio gives the connecting plate good resistance to deformation when subjected to bending loads, ensuring the flatness and stability of the photovoltaic panel installation.

[0022] Furthermore, in the cylindrical structure of the welding seat, the outer diameter is 50mm to 80mm, the inner diameter is 0.7 to 0.9 times the outer diameter, and the height of the welding seat is 1.2 to 1.8 times the outer diameter.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the outer diameter range of 50mm to 80mm provides sufficient welding area and load-bearing cross section, ensuring the strength requirements of the welding seat; the inner-outer diameter ratio design of 0.7 to 0.9 times ensures the wall thickness strength while avoiding excessive material usage; the height-to-diameter ratio of 1.2 to 1.8 times gives the welding seat a reasonable geometric proportion, which ensures the connection length and avoids instability caused by excessively tall structures; and the axisymmetric characteristics of the cylindrical structure make the load transfer more uniform.

[0024] Furthermore, the diameter of the adjusting shaft is 15mm to 25mm, the length of the adjusting shaft is 1.1 to 1.3 times the width of the connecting plate, and the length of the adjusting arm is 3 to 5 times the diameter of the adjusting shaft.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the adjustment shaft diameter range of 15mm to 25mm meets the torsional strength requirements while controlling weight and cost; the shaft length design of 1.1 to 1.3 times the width of the connecting plate ensures sufficient support and stability of the adjustment shaft; the adjustment arm length of 3 to 5 times the shaft diameter provides a suitable operating lever arm, making angle adjustment operation labor-saving and convenient; and the reasonable size ratio ensures that the adjustment mechanism has good structural compactness and operating comfort while ensuring functionality.

[0026] Compared with existing technologies, the beneficial effects of the photovoltaic support welding assembly provided by this utility model are as follows: This utility model, through its inverted trapezoidal frame structure support main body design, significantly improves the wind load resistance and overall stability of the photovoltaic support, effectively solving the problem of deformation and overturning of traditional rectangular frames under severe weather conditions. The hinged design of the adjustment mechanism enables precise adjustment of the photovoltaic panel installation angle, with a wide adjustment range and simple operation, meeting the optimization needs of different geographical locations and seasonal changes for illumination angle. The double-cylinder structure and differentiated thread design of the welding seat greatly improve connection reliability, effectively preventing the defects of traditional single-threaded connections that are prone to loosening. The trapezoidal protrusion design of the connecting plate enhances the load-bearing capacity, and reasonable size ratio control ensures that the structure achieves weight optimization while meeting strength requirements. The overall structure adopts a modular design concept, with reasonable connection methods between components, convenient installation and maintenance, significantly improving the installation efficiency and service life of the photovoltaic support system, and providing a solid mechanical support guarantee for the reliable operation of the photovoltaic power generation system. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a photovoltaic bracket welding assembly;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 10. Support body; 20. Connecting plate; 30. Fixing component; 40. Adjustment mechanism; 50. Welding seat. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] like Figure 1 The diagram shows a first embodiment of a photovoltaic bracket welding assembly provided by this utility model. In this embodiment, it includes: a support body 10, a connecting plate 20, a fixing component 30, an adjustment mechanism 40, and a welding seat 50. The support body has an inverted trapezoidal frame structure, with an installation groove at the top containing the connecting plate. The connecting plate has a rectangular plate structure, with a through hole in the center and four bolt holes evenly distributed around the through hole. The fixing component includes a fixing base and a fixing rod. The fixing base is fixedly installed at the bottom of the support body, and one end of the fixing rod is connected to the fixing base via a welding seat. The welding seat has a cylindrical structure. The adjustment mechanism includes an adjustment shaft and an adjustment arm. The adjustment shaft passes through an adjustment hole in the side wall of the support body and connects to the through hole in the connecting plate. The adjustment arm is fixedly connected to one end of the adjustment shaft for driving the adjustment shaft to rotate. The inner wall of the welding seat has a threaded structure, and the fixing rod is connected to the welding seat via a threaded connection. The support body and the connecting plate are hinged together via the adjustment shaft to achieve angle adjustment of the connecting plate relative to the support body.

[0033] In the above technical solution, the supporting body includes a main frame and reinforcing ribs. The main frame is formed by welding four steel bars to form an inverted trapezoidal structure. The reinforcing ribs are set inside the main frame, and the connection points between the reinforcing ribs and the main frame are connected by welds. The material of the main frame is stainless steel, the material of the reinforcing ribs is carbon steel, and the wall thickness of the main frame is 3mm to 5mm.

[0034] Furthermore, in the above technical solution, the connecting plate includes a main body and a protrusion. The main body has a rectangular structure, and the protrusion is disposed on the upper surface of the main body. The protrusion extends along the length direction of the main body. The cross-section of the protrusion is trapezoidal, and the height of the protrusion is 1.5 to 2 times the thickness of the main body. The protrusion and the main body are connected by an integral molding method.

[0035] Furthermore, in the above technical solution, the fixing component also includes a locking nut and a washer. The locking nut is located at the end of the fixing rod, and the washer is located between the locking nut and the welding seat. The fixing rod has a hexagonal cross-section, a length of 150mm to 300mm, and a threaded connection length between the fixing rod and the welding seat of 20mm to 40mm.

[0036] Furthermore, in the above technical solution, the adjustment mechanism also includes a limiting block and an elastic washer. The limiting block is fixedly installed on the side wall of the support body, and a mechanical limit is formed between the limiting block and the adjustment arm. The elastic washer is sleeved on the adjustment shaft and is located between the connecting plate and the support body to provide adjustment damping.

[0037] Furthermore, in the above technical solution, the welding seat includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are arranged in concentric circles, and the outer cylinder is connected to the fixed base by an annular weld; the inner wall of the inner cylinder is provided with a left-hand thread, the inner wall of the outer cylinder is provided with a right-hand thread, and a sealing ring is provided between the inner cylinder and the outer cylinder.

[0038] Furthermore, in the above technical solution, in the inverted trapezoidal structure of the supporting body, the length of the upper base is 0.6 to 0.8 times the length of the lower base, and the height of the inverted trapezoid is 150mm to 250mm.

[0039] Furthermore, in the above technical solution, the ratio of the length direction to the width direction in the rectangular structure of the connecting plate is 1.5 to 1 to 2 to 1, and the thickness of the connecting plate is 8 mm to 12 mm.

[0040] Furthermore, in the above technical solution, the cylindrical structure of the welding seat has an outer diameter of 50mm to 80mm, an inner diameter of 0.7 to 0.9 times the outer diameter, and a height of 1.2 to 1.8 times the outer diameter.

[0041] Furthermore, in the above technical solution, the diameter of the adjusting shaft is 15mm to 25mm, the length of the adjusting shaft is 1.1 to 1.3 times the width of the connecting plate, and the length of the adjusting arm is 3 to 5 times the diameter of the adjusting shaft.

[0042] In this embodiment, the photovoltaic support bracket welding assembly is made of 304 stainless steel. The inverted trapezoidal frame structure of the support body has an upper base length of 600mm, a lower base length of 800mm, a height of 200mm, and a main frame wall thickness of 4mm. The reinforcing ribs are made of Q235 carbon steel, with a cross-sectional dimension of 30mm × 4mm, arranged in an X-shape inside the inverted trapezoid, and connected to the main frame by CO2 gas shielded welding, with a weld length of 20mm. The connecting plate is made of 6061 aluminum alloy, with main body dimensions of 400mm × 250mm × 10mm, a protrusion height of 15mm, a bottom width of 30mm, and a top width of 15mm. Three protrusions are arranged along the length of the connecting plate, spaced 120mm apart. The through hole has a diameter of 20mm and is located at the geometric center of the connecting plate. Four bolt holes with a diameter of 8mm are distributed around the through hole, forming a rectangular arrangement of 120mm × 80mm. The fixed base is made of Q345 steel, with a base plate size of 300mm×300mm×15mm, and six M16 bolt holes for anchor bolt connection. The fixing rod is made of 304 stainless steel, with a hexagonal cross-section, a distance between opposite sides of 25mm, and a length of 200mm. One end is machined with an M30 thread with a thread length of 30mm. The outer cylinder of the welding base has an outer diameter of 65mm, an inner diameter of 55mm, and a height of 80mm. The inner cylinder has an outer diameter of 50mm and an inner diameter of 35mm. Both cylinders are made of Q235 steel. The inner wall of the outer cylinder is machined with an M52×2 right-hand thread, and the inner wall of the inner cylinder is machined with an M30×1.5 left-hand thread. A fluororubber sealing ring is installed between the cylinders. The adjusting shaft is made of 45# steel, with a diameter of 20mm and a length of 280mm, and both ends are machined with M20 threads. The adjusting arm, 80mm long, is made of Q235 steel with a 20mm x 6mm rectangular cross-section and is fixed to the adjusting shaft via a key connection. A limit block, made of nylon, is installed on the side wall of the support body, limiting the rotation angle of the adjusting arm to within the range of -15 degrees to +60 degrees. The elastic washer is made of 65Mn spring steel with an outer diameter of 30mm, an inner diameter of 21mm, and a thickness of 3mm. The entire assembly works by rotating the adjusting arm, which drives the adjusting shaft to rotate. This rotation causes the connecting plate to change angle relative to the support body, thus adjusting the installation angle of the photovoltaic panel. In terms of load-bearing capacity, the weight of the photovoltaic panel and wind load are transferred to the support body through the connecting plate, then to the fixed base through the fixing rod and welding seat, and finally to the foundation structure. The inverted trapezoidal geometry effectively counteracts the overturning moment generated by horizontal loads, and the reinforcing ribs further enhance structural rigidity. During use, operators adjust the angle of the connecting plate according to seasonal changes and lighting conditions. The angle is smaller in spring and summer to reduce the angle of light incidence, while it is larger in autumn and winter to increase the light-receiving area. The entire adjustment process is simple and quick, requiring only one person to operate, with an adjustment accuracy within 1 degree.This embodiment features a compact structure, light weight, and convenient installation. It demonstrates good stability and reliability in practical applications, effectively improving the overall performance of the photovoltaic power generation system.

[0043] Specifically, the principle of this utility model is as follows: The supporting main body adopts an inverted trapezoidal frame structure design, utilizing the principle of triangle stability and geometric optimization theory to make the load transfer path more reasonable, significantly increase the anti-overturning moment, and effectively improve the overall stability of the structure. The inverted trapezoidal structure's top-smaller-bottom-larger characteristic lowers the center of gravity, providing stronger anti-overturning ability when subjected to lateral wind loads. The reasonable arrangement of the reinforcing ribs further optimizes the stress distribution and avoids stress concentration. The adjustment mechanism is designed based on the hinge principle, achieving angle adjustment of the photovoltaic panel relative to the supporting main body through the hinged connection between the adjustment shaft and the connecting plate. The adjustment arm provides the operating torque, making angle adjustment easy and convenient. The setting of the limit block is based on the mechanical limit principle, ensuring that the adjustment angle is within a safe range and preventing structural damage caused by excessive rotation. The damping effect of the elastic washer is based on the principle of elasticity, providing appropriate feedback force for the adjustment operation and enhancing the accuracy of angle positioning. The double-cylinder structure of the welding seat is based on the principle of combined structural mechanics, with the inner and outer cylinders working together to bear the load, significantly improving the load-bearing capacity. The differentiated thread design is based on the principle of mechanical anti-loosening; the combination of left-hand and right-hand threads creates a mutual locking effect, effectively preventing loosening. The trapezoidal protrusion design of the connecting plate is based on the theory of cross-section optimization, significantly improving bending stiffness without significantly increasing weight. The overall structural design fully considers the balance between mechanical performance, economy, and manufacturability, achieving a balance between performance improvement and cost control through reasonable material selection and structural optimization.

[0044] In use, first install the fixed base on the preset foundation position and fix it with pre-embedded bolts or chemical anchors, ensuring that the flatness and levelness of the installation position meet the requirements. Then, perform circumferential welding between the outer cylinder of the welding seat and the fixed base. Before welding, clean the welding surface of oil and impurities, and select an appropriate welding current and welding speed to ensure weld quality. Insert the fixing rod into the inner cylinder of the welding seat and fix it with a threaded connection. During tightening, pay attention to torque control to avoid over-tightening and damaging the threads. When installing the support body, align its bottom with the top of the fixing rod and fix it with welding or bolts. Before installing the connecting plate, first pass the adjusting shaft through the adjusting hole on the side wall of the support body, then fit the through hole of the connecting plate onto the adjusting shaft, install the elastic washer, and tighten the nut. The adjusting arm is installed on one end of the adjusting shaft and fixed with a key connection or welding. When adjusting the angle, the operator holds the adjusting arm and slowly rotates it, observing the change in the tilt angle of the connecting plate. Stop adjusting once the desired angle is reached. Throughout the installation process, tools such as levels and angle measuring instruments are required to ensure installation accuracy. After all connections are completed, a tightness check must be performed to ensure there is no looseness.

Claims

1. A photovoltaic racking weldment assembly, characterized by, include: The system comprises a support body, a connecting plate, a fixing component, an adjustment mechanism, and a welding seat. The support body has an inverted trapezoidal frame structure, with a mounting groove at the top containing the connecting plate. The connecting plate has a rectangular plate structure with a through hole in the center and four bolt holes evenly distributed around it. The fixing component includes a fixing base and a fixing rod. The fixing base is fixedly mounted at the bottom of the support body, and one end of the fixing rod is connected to the fixing base via a welding seat, which has a cylindrical structure. The adjustment mechanism includes an adjustment shaft and an adjustment arm. The adjustment shaft passes through an adjustment hole in the side wall of the support body and connects to the through hole in the connecting plate. The adjustment arm is fixedly connected to one end of the adjustment shaft and is used to drive the adjustment shaft to rotate. The inner wall of the welding seat has a threaded structure, and the fixing rod is connected to the welding seat via a threaded connection. The support body and the connecting plate are hinged together via the adjustment shaft to achieve angle adjustment of the connecting plate relative to the support body.

2. The photovoltaic bracket welding assembly according to claim 1, characterized in that, The supporting structure includes a main frame and reinforcing ribs. The main frame is formed by welding four steel bars to form an inverted trapezoidal structure. The reinforcing ribs are located inside the main frame, and the connection points between the reinforcing ribs and the main frame are connected by welds. The main frame is made of stainless steel, the reinforcing ribs are made of carbon steel, and the wall thickness of the main frame is 3mm to 5mm.

3. A photovoltaic support welding assembly according to claim 2, characterized in that, The connecting plate includes a main body and a protrusion. The main body has a rectangular structure, and the protrusion is located on the upper surface of the main body and extends along the length of the main body. The cross-section of the protrusion is trapezoidal, and the height of the protrusion is 1.5 to 2 times the thickness of the main body. The protrusion and the main body are connected by an integral molding method.

4. A photovoltaic support welding assembly according to claim 3, characterized in that, The fixing assembly also includes a locking nut and a washer. The locking nut is located at the end of the fixing rod, and the washer is located between the locking nut and the welding seat. The fixing rod has a hexagonal cross-section, a length of 150mm to 300mm, and a threaded connection length between the fixing rod and the welding seat of 20mm to 40mm.

5. A photovoltaic bracket welding assembly according to claim 4, characterized in that, The adjustment mechanism also includes a limiting block and an elastic washer. The limiting block is fixedly installed on the side wall of the support body, and a mechanical limit is formed between the limiting block and the adjustment arm. The elastic washer is sleeved on the adjustment shaft and is located between the connecting plate and the support body to provide adjustment damping.

6. A photovoltaic support welding assembly according to claim 5, characterized in that, The welding seat includes an outer cylinder and an inner cylinder, which are arranged concentrically. The outer cylinder is connected to the fixed base by an annular weld. The inner wall of the inner cylinder is provided with a left-hand thread, and the inner wall of the outer cylinder is provided with a right-hand thread. A sealing ring is provided between the inner cylinder and the outer cylinder.

7. A photovoltaic support welding assembly according to claim 6, characterized in that, In the inverted trapezoidal structure of the supporting body, the length of the upper base is 0.6 to 0.8 times the length of the lower base, and the height of the inverted trapezoid is 150 mm to 250 mm.

8. A photovoltaic bracket welding assembly according to claim 7, characterized in that, In the rectangular structure of the connecting plate, the ratio of the length direction to the width direction is 1.5:1 to 2:1, and the thickness of the connecting plate is 8mm to 12mm.

9. A photovoltaic bracket welding assembly according to claim 8, characterized in that, In the cylindrical structure of the welding seat, the outer diameter is 50mm to 80mm, the inner diameter is 0.7 to 0.9 times the outer diameter, and the height of the welding seat is 1.2 to 1.8 times the outer diameter.

10. A photovoltaic bracket welding assembly according to claim 9, characterized in that, The diameter of the adjusting shaft is 15mm to 25mm, the length of the adjusting shaft is 1.1 to 1.3 times the width of the connecting plate, and the length of the adjusting arm is 3 to 5 times the diameter of the adjusting shaft.

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