Steel structure shed photovoltaic support

Abstract

The present application belongs to photovoltaic power generation panel technical field, especially, relate to a kind of steel structure shed roof photovoltaic support, including multiple longitudinal beams and steel structure shed roof for photovoltaic support installation, the outer wall of multiple longitudinal beams is fixedly connected with two groups of L-shaped crossbeam for photovoltaic power generation panel fixation, and each group of two L-shaped crossbeam is symmetrically distributed.The present application makes steel structure shed roof photovoltaic support have the function of height adjustment, so that photovoltaic power generation panel at photovoltaic support has sufficient heat dissipation space, also has the function of high-efficiency windproof, improves the protection ability of photovoltaic support to photovoltaic power generation panel, guarantees the power generation efficiency of photovoltaic power generation panel, meanwhile, the photovoltaic support also has the function of automatic cleaning of snow on the surface of photovoltaic power generation panel, guarantees the safety of photovoltaic power generation panel, and reduces the labor intensity of staff snow removal, and can effectively improve the reliability and life of photovoltaic power generation panel use.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic power generation technology, and in particular relates to a steel structure roof photovoltaic support. Background Technology

[0002] Photovoltaic power generation is a technology that converts solar energy into electrical energy through photovoltaic modules. It can be connected to the grid or off-grid for power supply and is an important form of clean energy utilization. Photovoltaic support is a structural component that fixes photovoltaic modules and can adjust the tilt angle of the modules to maximize solar energy absorption, while ensuring stable operation of the system in environments such as wind and rain. Currently, many factories install photovoltaic power generation panels on the sunny side of the roof of steel structure factory buildings in order to reduce electricity costs. This not only reduces the factory's mains power consumption, but also makes efficient use of space without occupying additional land, realizing the combined function of rooftop power generation and under-roof use. For example, patent CN222423561U discloses a photovoltaic support.

[0003] To reduce installation costs, steel structure rooftop photovoltaic (PV) brackets often use simple structures. These brackets mainly consist of longitudinal and transverse beams, with the PV panels fixed to the transverse beams. Finally, the brackets are directly fixed to the steel structure roof. However, these brackets are too close to the roof, resulting in poor ventilation and heat dissipation. Especially in the high temperatures of summer, the roof can get very hot, making the PV panels susceptible to overheating and affecting their power generation efficiency. This also accelerates the aging of the EVA structure inside the PV panels.

[0004] In addition, the photovoltaic support system lacks the function of assisting in clearing thick snow in winter, which means that the thick snow on the photovoltaic panels needs to be cleared manually with a scraper in winter. This not only increases the labor intensity of the workers, but also makes it difficult to control the scraper's cleaning force, which can easily damage the photovoltaic panels at the photovoltaic support system, further affecting the reliability and lifespan of the photovoltaic panels.

[0005] Therefore, we propose a steel structure rooftop photovoltaic support system to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the above-mentioned problems by providing a steel structure roof photovoltaic support system.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a steel structure roof photovoltaic support, comprising multiple longitudinal beams and a steel structure roof for photovoltaic support installation, wherein the outer walls of the multiple longitudinal beams are jointly fixedly connected to two sets of L-shaped crossbeams for fixing photovoltaic panels, and the two L-shaped crossbeams in each set are symmetrically distributed;

[0008] Three connecting protrusions are fixedly connected to the lower surface of each of the two longitudinal beams, and a U-shaped block is sleeved on the protrusion of the connecting protrusion.

[0009] A lifting mechanism is fixedly connected to the lower surface of the U-shaped block, and multiple mounting through holes for fixing the lifting mechanism are opened at the top of the steel structure canopy.

[0010] The bottom ends of multiple lifting mechanisms are fixedly connected to a multi-interface pipeline, and the bottom ends of the multi-interface pipeline are fixedly connected to a drive mechanism.

[0011] A connecting frame is fixedly connected to the outer wall of one of the longitudinal beams, and a wind speed sensor is fixedly connected to the top of the connecting frame. A temperature sensor is fixedly connected to the outer wall of one of the connecting protrusions.

[0012] In the aforementioned type of steel structure roof photovoltaic support, the lifting mechanism includes a connecting cylinder. A fixing block is fixedly sleeved at the bottom end of the connecting cylinder. The outer wall of the fixing block is fixedly connected to the outer wall of the beam frame of the steel structure roof. A through hole is opened at the top end of the connecting cylinder, and a moving rod is movably connected to the wall of the through hole. A sealing rubber cylinder is fixedly sleeved at the bottom end of the moving rod. The outer wall of the sealing rubber cylinder is slidably and sealingly connected to the inner wall of the connecting cylinder. The top end of the moving rod is fixedly connected to the lower surface of the U-shaped block. A sealing component is fixedly sleeved at the top end of the connecting cylinder.

[0013] In the aforementioned type of steel structure roof photovoltaic support, the sealing component includes a waterproof sealing block fixedly sleeved to the outer wall of the top of the connecting cylinder. The bottom end of the waterproof sealing block has an inclined surface that matches the shape of the steel structure roof. The wall of the movable rod is sleeved with a protective soft sleeve. The top end of the protective soft sleeve is fixedly connected to the lower surface of the U-shaped block, and the lower surface of the protective soft sleeve is fixedly connected to the upper surface of the waterproof sealing block.

[0014] In the aforementioned steel structure roof photovoltaic support, the driving mechanism includes a normally closed solenoid valve with a multi-port pipeline fixedly connected to the bottom. The connection end of the normally closed solenoid valve is fixedly connected to an oil tank. An electric push rod is fixedly embedded at the top of the oil tank. A sealing piston block is fixedly connected to the moving end of the electric push rod. The outer wall of the sealing piston block is slidably connected to the inner wall of the oil tank. The bottom of the oil tank is filled with hydraulic oil. A circular hole is opened on the outer wall of the bottom of the oil tank, and a snow removal auxiliary mechanism is fixedly connected to the wall of the circular hole.

[0015] In the aforementioned steel structure roof photovoltaic support, the bottom outer wall of the oil tank is provided with an installation through hole, and an auxiliary solenoid valve is fixedly connected to the wall of the installation through hole.

[0016] In the aforementioned steel structure roof photovoltaic support, a touch screen control panel is fixedly connected to the upper surface of the oil tank, a rectangular through hole is opened on the upper surface of the oil tank, and a PLC controller is fixedly connected to the inner wall of the top of the oil tank.

[0017] In the aforementioned steel structure photovoltaic roof support, the snow removal auxiliary mechanism includes a rectangular tube fixedly embedded at the bottom of the oil tank. The inner side of the rectangular tube communicates with the internal cavity of the oil tank. A rubber cover is slidably connected to the inner wall of the rectangular tube. A support limiting block is fixedly connected to the inner wall of the rubber cover. A U-shaped frame is fixedly connected to the outer wall of the support limiting block. A screw nut is fixedly embedded at the side end of the U-shaped frame. A reciprocating screw is threadedly connected to the inner wall of the screw nut. A drive motor is fixedly connected to the outer wall of the rectangular tube. The drive end of the drive motor passes through the inner wall of the rectangular tube and is fixedly connected to the connecting end of the reciprocating screw. A through hole is opened on the outer wall of the rectangular tube to cooperate with the drive end of the drive motor.

[0018] In the aforementioned steel structure roof photovoltaic support, the top of the U-shaped block and the protrusion of the connecting protrusion are both equipped with bolts and nuts. The outer wall of the top of the U-shaped block and the outer wall of the protrusion of the connecting protrusion are both provided with connecting through holes that cooperate with the bolts and nuts.

[0019] Compared with existing technologies, the advantages of a steel structure roof photovoltaic support system are:

[0020] 1. Through the set lifting mechanism, longitudinal beams, and L-shaped crossbeams, when the photovoltaic bracket for the steel structure roof is installed, the auxiliary solenoid valve is first connected to the air extraction equipment and opened. Then, the air extraction equipment draws in air, creating a negative pressure environment inside the oil tank, multi-port pipelines, and multiple connecting cylinders. Next, hydraulic oil is filled into the negative pressure environment. The hydraulic oil pushes the longitudinal beams upward through the lifting mechanism. The longitudinal beams then lift the photovoltaic panels through the L-shaped crossbeams, ensuring that the photovoltaic panels are away from the steel structure roof. This increases the heat dissipation space at the bottom of the photovoltaic panels and improves air circulation, thereby improving the heat dissipation efficiency of the photovoltaic panels. This mechanism provides sufficient heat dissipation space at the bottom of the photovoltaic panels installed on the steel structure roof photovoltaic bracket, avoiding interference from the high temperature of the steel structure roof on the photovoltaic power generation efficiency and preventing high temperature from accelerating the aging of the EVA structure inside the photovoltaic panels.

[0021] 2. Through the installation of wind speed sensors, temperature sensors, lifting mechanisms, and drive mechanisms, the wind speed sensor continuously monitors the surrounding wind speed during photovoltaic (PV) support operation. If the wind speed exceeds the preset wind speed threshold of the PLC controller, the PLC controller activates the drive and lifting mechanisms, causing the longitudinal beams and L-shaped crossbeams to move downwards. This ultimately lowers the position of the PV panels at the L-shaped crossbeams, reducing the center of gravity of the PV support and the wind-receiving area of ​​the PV panels, ensuring their safety. Furthermore, within the preset wind speed threshold range of the PLC controller, the magnitude of the descent of the PV panels at the support is proportional to the wind speed detected by the wind speed sensor. The main body of the lifting mechanism of the PV support is located inside the steel structure roof and is sealed. The components are waterproofed to minimize the risk of accelerated corrosion caused by excessively humid environments. During hot summer months, when winds pick up, temperature sensors detect that the steel roof structure remains hot. The lifting and drive mechanisms then raise the photovoltaic panels a short distance. This short distance does not excessively increase the wind pressure on the panels but increases the heat dissipation space at the bottom. This mechanism provides height adjustment for the steel roof photovoltaic support system, ensuring ample heat dissipation space for the panels and providing efficient wind protection. This enhances the support system's ability to protect the panels, ensuring power generation efficiency and improving the reliability and lifespan of the photovoltaic panels.

[0022] 3. Through the snow removal auxiliary mechanism, when thick snow accumulates on the surface of the photovoltaic panels at the photovoltaic support in winter, workers can send instructions to the PLC controller via the touch screen control panel during the midday heat. At this temperature, some of the snow on the photovoltaic panel surface will melt, reducing the adhesion between the snow and the photovoltaic panel. The PLC controller then controls the snow removal auxiliary mechanism to operate. The mechanism uses hydraulic oil to cause the longitudinal beams and L-shaped crossbeams to move up and down, causing the photovoltaic panels at the photovoltaic support to move up and down at a high frequency. This facilitates the rapid and automatic sliding off of the snow adhering to the photovoltaic panel surface, eliminating the need for workers to use scrapers to clean it. This prevents damage to the photovoltaic panels from snow removal scrapers. This mechanism enables the steel structure roof photovoltaic support to automatically clean the surface of the photovoltaic panels, improving the safety of snow removal, reducing the labor intensity of workers, and ensuring the reliability and lifespan of the photovoltaic panels. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a steel structure roof photovoltaic support provided by the present invention;

[0024] Figure 2 This is a partial top view of a steel structure photovoltaic support frame for a rooftop, provided by the present invention.

[0025] Figure 3 This is a structural schematic diagram of a lifting mechanism in a steel structure roof photovoltaic support provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the drive mechanism in a steel structure roof photovoltaic support provided by the present invention;

[0027] Figure 5 This is a schematic diagram of the snow removal auxiliary mechanism in a steel structure photovoltaic support for a rooftop, provided by the present invention.

[0028] Figure 6 This is a schematic diagram of the U-shaped block in a steel structure roof photovoltaic support provided by the present invention.

[0029] In the diagram: 1. Longitudinal beam; 2. Steel structure roof; 3. L-shaped crossbeam; 4. Connecting protrusion; 5. U-shaped block; 6. Lifting mechanism; 61. Connecting cylinder; 62. Fixing block; 63. Moving rod; 64. Sealing rubber cylinder; 7. Sealing assembly; 71. Waterproof sealing block; 72. Protective soft sleeve; 8. Drive mechanism; 81. Normally closed solenoid valve; 82. Oil tank; 83. Electric push rod; 84. Sealing piston block; 85. Hydraulic oil; 9. Snow removal auxiliary mechanism; 91. Rectangular cylinder; 92. Rubber cover; 93. Support limit block; 94. U-shaped frame; 95. Screw nut; 96. Reciprocating screw; 97. Drive motor; 10. Multi-interface pipeline; 11. Connecting frame; 12. Wind speed sensor; 13. Temperature sensor; 14. Auxiliary solenoid valve; 15. Touch screen control panel; 16. Rectangular through hole; 17. PLC controller; 18. Bolts, nuts, and fasteners. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1-6As shown, a steel structure photovoltaic support for a roof includes multiple longitudinal beams 1 and a steel structure roof 2 for installing the photovoltaic support. The outer walls of the multiple longitudinal beams 1 are jointly and fixedly connected to two sets of L-shaped crossbeams 3 for fixing photovoltaic panels. The two L-shaped crossbeams 3 in each set are symmetrically distributed. The lower surfaces of the two longitudinal beams 1 are each fixedly connected to three connecting protrusions 4. U-shaped blocks 5 are sleeved on the protrusions of the connecting protrusions 4. Bolts and nuts 18 are installed on the top of the U-shaped blocks 5 and the protrusions of the connecting protrusions 4. The outer walls of the top of the U-shaped blocks 5 and the outer walls of the protrusions of the connecting protrusions 4 are provided with connecting through holes that cooperate with the bolts and nuts 18. The lower surface of the U-shaped blocks 5 is fixedly connected to a lifting mechanism 6. The top of the steel structure roof 2 is provided with multiple mounting through holes for fixing the lifting mechanism 6.

[0032] The lifting mechanism 6 includes a connecting cylinder 61, with a fixing block 62 fixedly sleeved at the bottom end of the connecting cylinder 61. The outer wall of the fixing block 62 is fixedly connected to the outer wall of the beam frame of the steel structure roof 2. A through hole is opened at the top end of the connecting cylinder 61, and a moving rod 63 is movably connected to the wall of the through hole. A sealing rubber cylinder 64 is fixedly sleeved at the bottom end of the moving rod 63. The outer wall of the sealing rubber cylinder 64 is slidably connected to the inner wall of the connecting cylinder 61. The top end of the moving rod 63 is fixedly connected to the lower surface of the U-shaped block 5. A sealing component 7 is fixedly sleeved at the top end of the connecting cylinder 61. The sealing component 7 includes a waterproof sealing block 71 fixedly sleeved to the outer wall of the top end of the connecting cylinder 61. The bottom end of the waterproof sealing block 71 has an inclined surface that matches the shape of the roof of the steel structure roof 2. A protective soft sleeve 72 is sleeved on the wall of the moving rod 63. The top end of the protective soft sleeve 72 is fixedly connected to the lower surface of the U-shaped block 5, and the lower surface of the protective soft sleeve 72 is fixedly connected to the upper surface of the waterproof sealing block 71.

[0033] The bottom ends of multiple lifting mechanisms 6 are all fixedly connected to a multi-port pipe 10. The bottom end of the multi-port pipe 10 is fixedly connected to a drive mechanism 8. The drive mechanism 8 includes a normally closed solenoid valve 81 fixedly connected to the bottom end of the multi-port pipe 10. The connection end of the normally closed solenoid valve 81 is fixedly connected to an oil tank 82. An electric push rod 83 is fixedly embedded in the top end of the oil tank 82. A sealing piston block 84 is fixedly connected to the moving end of the electric push rod 83. The outer wall of the sealing piston block 84 is slidably connected to the inner wall of the oil tank 82. The bottom end of the oil tank 82 is filled with hydraulic oil 85. An installation through hole is opened on the outer wall of the bottom end of the oil tank 82. An auxiliary solenoid valve 14 is fixedly connected to the wall of the installation through hole. A touch screen control panel 15 is fixedly connected to the upper surface of the oil tank 82. A rectangular through hole 16 is opened on the upper surface of the oil tank 82. A PLC controller 17 is fixedly connected to the inner wall of the top end of the oil tank 82.

[0034] A circular hole is provided on the outer wall of the bottom end of the fuel tank 82, and a snow removal auxiliary mechanism 9 is fixedly connected to the wall of the circular hole. The snow removal auxiliary mechanism 9 includes a rectangular tube 91 fixedly embedded in the bottom end of the fuel tank 82. The inner side of the rectangular tube 91 communicates with the internal cavity of the fuel tank 82. A rubber cover 92 is slidably connected to the inner wall of the rectangular tube 91. A support limiting block 93 is fixedly connected to the inner wall of the rubber cover 92. A U-shaped frame 94 is fixedly connected to the outer wall of the support limiting block 93. A screw nut 95 is fixedly embedded on the side end of the U-shaped frame 94. A reciprocating screw 96 is threadedly connected to the inner wall of the screw nut 95. A drive motor 97 is fixedly connected to the outer wall of the rectangular tube 91. The drive end of the drive motor 97 passes through the inner wall of the rectangular tube 91 and is fixedly connected to the connecting end of the reciprocating screw 96. A through hole is provided on the outer wall of the rectangular tube 91 to cooperate with the drive end of the drive motor 97.

[0035] A connecting frame 11 is fixedly connected to the outer wall of one of the longitudinal beams 1, and a wind speed sensor 12 is fixedly connected to the top of the connecting frame 11. A temperature sensor 13 is fixedly connected to the outer wall of one of the connecting protrusions 4. The wind speed sensor 12, the temperature sensor 13, and the touch screen control panel 15 are all electrically connected to the input terminal of the PLC controller 17 through wires. The normally closed solenoid valve 81, the electric push rod 83, the drive motor 97, and the auxiliary solenoid valve 14 are all electrically connected to the output terminal of the PLC controller 17 through wires. The above electrical equipment and electrical connections are all existing technologies and will not be described in detail here.

[0036] The operating principle of this invention is described as follows: When the photovoltaic support of the steel structure roof 2 is installed, the auxiliary solenoid valve 14 is first connected through the air extraction device, and the moving end of the electric push rod 83 is fully extended through the touch screen control panel 15 and the PLC controller 17 to ensure that the sealing piston block 84 is at the bottom of the oil tank 82. Then, the touch screen control panel 15 sends a command to the PLC controller 17, and the PLC controller 17 controls the auxiliary solenoid valve 14 and the normally closed solenoid valve 81 to open for a period of time (e.g., 3 minutes). Then, during this period, the air extraction device draws air from the oil tank 82 and the multi-port pipeline 1. The air inside the 0 and multiple connecting cylinders 61 creates a negative pressure environment inside all three. After this period of time, the PLC controller 17 controls the auxiliary solenoid valve 14 to close, and the staff leaves the air extraction equipment. Then, the staff connects the external hydraulic oil pipe to the auxiliary solenoid valve 14. After that, the staff controls the auxiliary solenoid valve 14 to open for a period of time (e.g., 3 minutes) through the touch screen control panel 15 and the PLC controller 17. During this period of time, hydraulic oil 85 can be injected into the oil tank 82 and multiple connecting cylinders 61 through the hydraulic oil pipe and oil delivery equipment, so that the connecting cylinders 61 are filled with oil.

[0037] Hydraulic oil 85 pushes the moving rod 63 upward through the sealed rubber cylinder 64, and the moving rod 63 will rise to the highest point. At the same time, the moving rod 63 pushes the longitudinal beam 1 upward through the U-shaped block 5 and the connecting protrusion 4. The longitudinal beam 1 drives the photovoltaic panel upward through the L-shaped crossbeam 3, ensuring that the photovoltaic panel is away from the roof of the steel structure canopy 2, increasing the airflow at the bottom of the photovoltaic panel, thereby improving the heat dissipation efficiency of the photovoltaic panel. After this period is completed, the PLC controller 17 controls the normally closed solenoid valve 81 and the auxiliary solenoid valve 14 to close, ensuring the stability of the hydraulic oil 85 inside the oil tank 82, thereby enabling the photovoltaic panel installed on the photovoltaic bracket to work normally.

[0038] When the photovoltaic support is in use, the wind speed sensor 12 detects the wind speed of the surrounding environment in real time and converts the wind speed value into an electrical signal and sends it to the PLC controller 17. If the wind speed value exceeds the wind speed threshold preset by the PLC controller 17, the PLC controller 17 not only controls the moving end of the electric push rod 83 to retract, but also controls the normally closed solenoid valve 81 to open for a period of time (e.g., 50 seconds). The retraction of the moving end of the electric push rod 83 will drive the sealing piston block 84 to move upward, and at the same time, a negative pressure environment will be generated in the oil tank 82. The negative pressure environment in the oil tank 82 will maintain the hydraulic balance of the system by drawing the hydraulic oil 85 inside the connecting cylinder 61 through the normally closed solenoid valve 81 and the multi-port pipeline 10.

[0039] After the hydraulic oil 85 in the connecting cylinder 61 is extracted, under the influence of hydraulic balance, the moving rod 63 moves down through the sealing rubber cylinder 64, and drives the longitudinal beam 1 and the L-shaped crossbeam 3 to move down. This causes the position of the photovoltaic panel at the L-shaped crossbeam 3 to drop and be as close as possible to the roof of the steel structure canopy 2. This not only lowers the center of gravity of the photovoltaic support, but also reduces the wind-receiving area of ​​the photovoltaic panel at the photovoltaic support, ensuring the safety of the photovoltaic panel. Furthermore, within the wind speed threshold preset by the PLC controller 17, the size of the drop of the photovoltaic panel at the photovoltaic support is proportional to the wind speed value detected by the wind speed sensor 12.

[0040] In addition, the main body of the photovoltaic support lifting mechanism 6 is placed inside the steel structure roof 2. At the same time, the top of the lifting mechanism 6 is also isolated and protected by a waterproof sealing block 71 and a protective soft sleeve 72 to minimize the impact of excessively humid external environment on the lifting mechanism 6 and prevent accelerated corrosion. This mechanism enables the photovoltaic support of the steel structure roof 2 to have the function of height adjustment, so that the photovoltaic panels at the photovoltaic support have sufficient heat dissipation space and also have an efficient windproof function, improving the protection capability of the photovoltaic support for the photovoltaic panels, ensuring the power generation efficiency of the photovoltaic panels, and improving the reliability and lifespan of the photovoltaic panels.

[0041] When the summer heat is high and winds are blowing, although the photovoltaic brackets are controlled by the PLC controller 17, drive mechanism 8, and lifting mechanism 6 to be in close contact with the steel structure roof 2 for safety protection, the external environment is still very hot. The temperature of the steel structure roof 2 is also high. The photovoltaic panels installed on the photovoltaic brackets, which are in close contact with the steel structure roof 2 for a long time, will still be affected by the high-temperature environment. At this time, the temperature sensor 13 will monitor the temperature of the high-temperature environment on the steel structure roof 2 in real time and send the detected temperature value to the PLC controller 17. If the temperature value detected by the temperature sensor 13 exceeds the high temperature threshold preset by the PLC controller 17 (e.g., 45 degrees Celsius), the PLC controller 17 will control the electric push rod 83 and the normally closed solenoid valve 81 to work for a short period of time (e.g., 10 seconds). The electric push rod 83 extends its moving end and pushes the sealing piston block 84 downward. The sealing piston block 84 pushes a small amount of hydraulic oil 85 through the multi-port pipe 10 into multiple connecting cylinders 61. At this time, due to the injection of a small amount of hydraulic oil 85 into the connecting cylinders 61, the moving rod 63 will rise a short distance (e.g., 10 cm), and simultaneously push the photovoltaic panel at the photovoltaic bracket to rise a short distance. This short distance will not excessively increase the wind pressure borne by the photovoltaic panel, but it will increase the heat dissipation space of the photovoltaic panel, increase the air flow speed at the bottom of the photovoltaic panel, and thus improve the heat dissipation of the photovoltaic panel. This avoids the interference of the high heat environment at the roof of the steel structure canopy 2 on photovoltaic power generation and ensures the safety of the photovoltaic panel. Afterwards, the PLC controller 17 will control the electric push rod 83 and the normally closed solenoid valve 81 to stop working.

[0042] When thick snow accumulates on the surface of the photovoltaic panels at the photovoltaic support structure during winter, workers can send instructions to the PLC controller 17 via the touchscreen control panel 15 at midday when temperatures are highest. At this temperature, some of the snow on the photovoltaic panel surface will melt, reducing the adhesion between the snow and the photovoltaic panel, making snow removal easier. The PLC controller 17 controls the drive motor 97 and the normally closed solenoid valve 81. The drive motor 97 drives the reciprocating screw 96 to rotate. The reciprocating screw 96, through the limiting action of the rectangular cylinder 91 and the support limit block 93, causes the screw nut 95 to move rapidly left and right. The screw nut 95, through the U-shaped frame 94 and the support limit block 93, causes the rubber cover 92 to move rapidly left and right within the rectangular cylinder 91. When the rubber cover 92 moves to the left, it draws some hydraulic oil 85 from the oil tank 82 into the rectangular cylinder 91. The negative pressure in the oil tank 82 acts on the connecting cylinder 61 of the lifting mechanism 6 through the multi-port pipe 10, causing the moving rod 63 to move downwards, thereby driving the photovoltaic power generation at the photovoltaic support structure. The position of the panel drops a certain distance (e.g., 5 cm). If the rubber cover 92 moves to the right, the rubber cover 92 will push out the hydraulic oil 85 that was previously sucked in. When the rubber cover 92 moves to the right and pushes out the hydraulic oil 85, the pressure of the hydraulic oil 85 inside the oil tank 82 increases. The high-pressure hydraulic oil 85 will enter the connecting cylinder 61 of the lifting mechanism 6 through the multi-port pipe 10, pushing the moving rod 63 to move upward, and finally restoring the position of the photovoltaic panel at the photovoltaic bracket to the state before it dropped. In addition, because the drive end of the drive motor 97 rotates continuously and rapidly, the screw nut 95 moves left and right at a high speed, causing the photovoltaic panel at the photovoltaic bracket to fluctuate up and down at a high frequency, causing the snow attached to the surface of the photovoltaic panel to slide off quickly and automatically without the need for workers to clean it with a scraper. This prevents the photovoltaic panel from being damaged by the snow cleaning scraper. This mechanism enables the photovoltaic bracket of the steel structure roof 2 to also have the function of automatically cleaning the snow on the surface of the photovoltaic panel. It can not only improve the safety of snow cleaning, but also reduce the labor intensity of workers and ensure the reliability and life of the photovoltaic panel.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel structure roof photovoltaic support system, comprising multiple longitudinal beams (1) and a steel structure roof (2) for installing the photovoltaic support system, characterized in that, The outer walls of the multiple longitudinal beams (1) are jointly fixedly connected to two sets of L-shaped crossbeams (3) for fixing the photovoltaic panels, and the two L-shaped crossbeams (3) in each set are symmetrically distributed; Three connecting protrusions (4) are fixedly connected to the lower surface of each of the two longitudinal beams (1), and a U-shaped block (5) is sleeved on the protrusion of the connecting protrusion (4). The lower surface of the U-shaped block (5) is fixedly connected to a lifting mechanism (6), and the top of the steel structure roof (2) is provided with multiple mounting through holes for the fixed installation of the lifting mechanism (6). The lifting mechanism (6) includes a connecting cylinder (61), a fixing block (62) is fixedly sleeved at the bottom end of the connecting cylinder (61), the outer wall of the fixing block (62) is fixedly connected to the outer wall of the beam frame of the steel structure canopy (2), a through hole is opened at the top end of the connecting cylinder (61), and a moving rod (63) is movably connected to the hole wall of the through hole. A sealing rubber cylinder (64) is fixedly sleeved at the bottom end of the moving rod (63), and the outer wall of the sealing rubber cylinder (64) is slidably connected to the inner wall of the connecting cylinder (61). The top end of the moving rod (63) is fixedly connected to the lower surface of the U-shaped block (5), and a sealing component (7) is fixedly sleeved at the top end of the connecting cylinder (61). The sealing assembly (7) includes a waterproof sealing block (71) fixedly sleeved on the outer wall of the top of the connecting cylinder (61). The bottom end of the waterproof sealing block (71) is provided with an inclined surface that matches the roof shape of the steel structure canopy (2). The rod wall of the moving rod (63) is sleeved with a protective soft sleeve (72). The top end of the protective soft sleeve (72) is fixedly connected to the lower surface of the U-shaped block (5), and the lower surface of the protective soft sleeve (72) is fixedly connected to the upper surface of the waterproof sealing block (71). The bottom ends of the multiple lifting mechanisms (6) are fixedly connected to a multi-interface pipeline (10), and the bottom end of the multi-interface pipeline (10) is fixedly connected to a driving mechanism (8). The drive mechanism (8) includes a normally closed solenoid valve (81) with a multi-port pipeline (10) fixedly connected to the bottom end. The connection end of the normally closed solenoid valve (81) is fixedly connected to an oil tank (82). An electric push rod (83) is fixedly embedded at the top of the oil tank (82). A sealing piston block (84) is fixedly connected to the moving end of the electric push rod (83). The outer wall of the sealing piston block (84) is slidably connected to the inner wall of the oil tank (82). The bottom end of the oil tank (82) is filled with hydraulic oil (85). A round hole is opened on the outer wall of the bottom end of the oil tank (82), and a snow removal auxiliary mechanism (9) is fixedly connected to the hole wall. The snow removal auxiliary mechanism (9) includes a rectangular tube (91) fixedly embedded at the bottom of the oil tank (82). The inner side of the rectangular tube (91) is connected to the internal cavity of the oil tank (82). A rubber cover (92) is slidably connected to the inner wall of the rectangular tube (91). A support limiting block (93) is fixedly connected to the inner wall of the rubber cover (92). A U-shaped frame (94) is fixedly connected to the outer wall of the support limiting block (93). A screw nut (95) is fixedly embedded at the side end of the U-shaped frame (94). A reciprocating screw (96) is threadedly connected to the inner wall of the screw nut (95). A drive motor (97) is fixedly connected to the outer wall of the rectangular tube (91). The drive end of the drive motor (97) passes through the inner wall of the rectangular tube (91) and is fixedly connected to the connecting end of the reciprocating screw (96). A through hole is opened on the outer wall of the rectangular tube (91) to cooperate with the drive end of the drive motor (97). A connecting frame (11) is fixedly connected to the outer wall of one of the longitudinal beams (1), and a wind speed sensor (12) is fixedly connected to the top of the connecting frame (11). A temperature sensor (13) is fixedly connected to the outer wall of one of the connecting protrusions (4). A PLC controller (17) is fixedly connected to the inner wall of the top of the oil tank (82). The wind speed sensor (12) and temperature sensor (13) are electrically connected to the input terminal of the PLC controller (17) through wires, and the normally closed solenoid valve (81) and electric push rod (83) are electrically connected to the output terminal of the PLC controller (17) through wires. Within the wind speed threshold range preset by the PLC controller (17), the size of the photovoltaic panel at the photovoltaic support descending is proportional to the wind speed value detected by the wind speed sensor (12); If the temperature value detected by the temperature sensor (13) exceeds the high temperature threshold preset by the PLC controller (17), the PLC controller (17) will control the electric push rod (83) and the normally closed solenoid valve (81) to work, pushing the photovoltaic panel to rise a short distance. This short distance will not excessively increase the wind pressure on the photovoltaic panel, but will increase the heat dissipation space of the photovoltaic panel.

2. The steel structure roof photovoltaic support according to claim 1, characterized in that, The bottom outer wall of the oil tank (82) is provided with an installation through hole, and an auxiliary solenoid valve (14) is fixedly connected to the hole wall of the installation through hole.

3. A steel structure roof photovoltaic support according to claim 1, characterized in that, The upper surface of the oil tank (82) is fixedly connected to a touch screen control panel (15), and a rectangular through hole (16) is opened on the upper surface of the oil tank (82).

4. A steel structure roof photovoltaic support according to claim 1, characterized in that, The top of the U-shaped block (5) and the protrusion of the connecting protrusion (4) are jointly equipped with bolt and nut fasteners (18). The outer wall of the top of the U-shaped block (5) and the outer wall of the protrusion of the connecting protrusion (4) are provided with connecting through holes that cooperate with the bolt and nut fasteners (18).

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