Concrete roof photovoltaic support system

Abstract

The invention discloses a concrete roof photovoltaic support system in the technical field of photovoltaic supports, in the process of using a photovoltaic panel for power generation, when accumulated snow on the surface of the photovoltaic panel is gradually increased in heavy snow weather, a first sliding cylinder, a sliding groove, a fixed disc, a sliding rod and a trigger plate are utilized, and when the accumulated snow on the surface of the photovoltaic panel reaches a certain weight, the first sliding cylinder is fixed on the fixed disc; the fixing frame and one side of the photovoltaic panel can move downwards to generate a certain fall, the inclination degree of the photovoltaic panel is increased, accumulated snow on the surface of the photovoltaic panel can be separated from the photovoltaic panel and slide down along the photovoltaic panel, the accumulated snow on the surface of the photovoltaic panel can be automatically removed after reaching a certain weight, manual cleaning is not needed, the surface of the photovoltaic panel is ensured to be clean, and the working efficiency is improved. And when strong wind weather occurs, the detection fan blades act on the higher side of the fixing frame at a certain wind speed to move downwards to be gradually flush with the lower side of the fixing frame, so that the inclination degree of the fixing frame is reduced, the blowing force of wind power to the fixing frame and the photovoltaic panel is reduced, and the stability of the photovoltaic panel is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic brackets, and in particular to a concrete roof photovoltaic bracket system. Background Art

[0002] In recent years, with the rapid economic development and the continuous advancement of industrialization, non-renewable energy will gradually approach exhaustion, and mankind is facing the dual pressures of resource depletion and environmental degradation; the development and utilization of renewable energy is an important measure to increase the sustainable energy supply capacity, improve the energy structure, ensure energy security, and gradually restore the natural environment. It is of great significance to building a resource-saving and environmentally friendly society and achieving comprehensive, coordinated and sustainable economic and social development; in recent years, renewable energy power generation has been vigorously developed, and obtaining electricity from solar energy, including its derived wind energy, hydropower and other renewable energy sources, is the ultimate destination of mankind's demand for electricity. Renewable energy power generation will become an important part of the future source of electricity, and its advantages are well known; and solar energy, as a clean, sustainable and inexhaustible natural energy, is favored by people. Its application not only improves the ecological environment and reduces greenhouse gas emissions, but also is conducive to energy conservation and emission reduction and the development of a low-carbon economy.

[0003] In the process of installing photovoltaic panels in the prior art, the photovoltaic panels are usually fixed on the roof. After the photovoltaic panels are installed, they are generally not dismantled or moved. When there is heavy snow, a lot of snow is likely to accumulate on the surface of the photovoltaic panels. The snow melts slowly in winter, which will affect the power generation efficiency of the photovoltaic panels. The snow on the surface of the photovoltaic panels needs to be cleaned manually on the roof, which is dangerous and cumbersome. In addition, photovoltaic panels are generally installed at an angle. When there is strong wind, when the wind blows from the back of the photovoltaic panel to the photovoltaic panel, it is easy to blow the photovoltaic panel off the mounting frame, causing damage to the photovoltaic panel and affecting the normal power generation of the photovoltaic panel. Summary of the invention

[0004] The object of the present invention is to provide a concrete roof photovoltaic support system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concrete roof photovoltaic support system, comprising a mounting plate, two short support legs and two high support legs are fixedly mounted on the surface of the mounting plate, the short support legs and the high support legs are both hollow cylindrical, and an inclined fixed frame is commonly provided at the upper ends of the two short support legs and the two high support legs, a photovoltaic panel is installed in the fixed frame, a telescopic mechanism is provided inside the short support legs, the telescopic mechanism is used to make the short support legs contract when subjected to pressure, a limiting mechanism is provided inside the short support legs, the limiting mechanism is used to limit the telescopic mechanism before the pressure on the fixed frame reaches a certain level, a detection mechanism is provided between the two high support legs, the detection mechanism is used to detect the wind speed between the two high support legs, a leveling mechanism is provided inside the high support legs, the leveling mechanism is used to move the higher side of the fixed frame to a state where it is level with the lower side, and a trigger mechanism is provided inside the high support legs, the trigger mechanism is used to make the leveling mechanism act on the fixed frame to move when the detection mechanism detects that the wind speed reaches a certain level.

[0006] As a further solution of the present invention, the retraction mechanism includes a first sliding cylinder, which slides inside the short supporting leg. A fixed plate is fixedly connected to the inside of the first sliding cylinder, a first spring is fixedly connected to the bottom of the fixed plate, and the fixed frame is located at the upper end of the first sliding cylinder.

[0007] As a further solution of the present invention, the limiting mechanism includes two L-shaped sliding grooves, the two sliding grooves are respectively opened on the front and rear side surfaces of the short supporting leg, the sliding groove runs through the short supporting leg, and sliding rods are slidably connected in the two sliding grooves, and a fixed plate is fixedly connected between the two sliding rods. The bottom of the first spring is connected to the fixed plate, and the bottom of the fixed plate is fixedly connected to a second spring, the elastic coefficient of the second spring is smaller than the elastic coefficient of the first spring, and a trigger plate is fixedly connected to the inner wall surface of the first sliding cylinder corresponding to the position of the sliding rod, and the bottom of the trigger plate is an inclined surface.

[0008] As a further solution of the present invention, the detection mechanism includes a fixed rod, which is fixedly installed on the surfaces of the two high support legs. The surface of the fixed rod is rotatably connected to multiple rotating rods, and the surface of the rotating rod is fixedly connected to detection fan blades.

[0009] As a further solution of the present invention, the leveling mechanism includes a second sliding cylinder, which slides inside the high support leg, the bottom of the fixed frame is hinged to the second sliding cylinder, the bottom of the second sliding cylinder is connected to a third spring, the surface of the second sliding cylinder is provided with a clearance slot, the clearance slot passes through the second sliding cylinder, a winding rod is rotatably connected inside the high support leg, the winding rod is located below the clearance slot, the second sliding cylinder is rotatably connected inside the rotating column, a pulling rope is fixedly connected to the surface of the winding rod, and the pulling rope is connected to the bottom of the high support leg after passing around the rotating column.

[0010] As a further solution of the present invention, the trigger mechanism includes two rotating shafts, both of which are rotatably connected to the surface of the fixed rod, and the rotating shaft and the surface of the rotating rod are jointly connected by a synchronous belt for transmission, and the two rotating shafts are located at the position of the high support leg, and both of the rotating shafts pass through the high support leg and extend to the inside of the high support leg, and a plurality of telescopic blocks are fixedly connected to the surface of the rotating shaft, and a rotating disk is fixedly connected to the end of the winding rod, and a groove is provided on the surface of the rotating disk, and the end of the rotating shaft and the telescopic block both extend into the groove, and a plurality of limiting grooves are provided on the inner wall of the groove, and the telescopic block will move into the limiting groove after being extended.

[0011] As a further solution of the present invention, an L-shaped extension rod is fixedly connected to the surface of the short supporting leg, the end of the extension rod extends to the side of the fixed frame, a plurality of toggle rods of different lengths are fixedly connected to the surface of the extension rod, a swing rod is elastically hinged to the surface of the fixed frame, the middle position of the swing rod is hinged to the fixed frame, one end of the swing rod extends to the position of the toggle rod, and the other end of the swing rod is fixedly connected to a knocking block, which extends to the bottom of the fixed frame.

[0012] As a further solution of the present invention, a buffer sleeve is fixedly connected to the upper end of the first sliding cylinder, and the buffer sleeve is located between the first sliding cylinder and the fixed frame.

[0013] As a further solution of the present invention, a soft rubber pad is fixedly connected to the upper end of the second sliding cylinder, and the rubber pad is located between the second sliding cylinder and the fixed frame.

[0014] As a further solution of the present invention, a plurality of limiting bands are fixedly connected to the surface of the fixing frame, and the limiting bands are located at the four corners of the fixing frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the process of using photovoltaic panels to generate electricity, when heavy snow occurs and the snow on the surface of the photovoltaic panels gradually increases, the present invention uses the first sliding cylinder, the sliding groove, the fixed plate, the sliding rod and the trigger plate. When the snow on the surface of the photovoltaic panel reaches a certain weight, the fixed frame and one side of the photovoltaic panel will move downward to produce a certain drop, and the inclination of the photovoltaic panel will increase. The snow on the surface of the photovoltaic panel will separate from the photovoltaic panel and slide along the photovoltaic panel, so that the snow on the surface of the photovoltaic panel can be automatically cleared after reaching a certain weight, without manual cleaning, to ensure the cleanliness of the surface of the photovoltaic panel, and to avoid more snow on the surface of the photovoltaic panel in heavy snow. On the one hand, the snow is relatively heavy. The photovoltaic panels are easily deformed and damaged due to squeezing, affecting their normal use. On the other hand, the photovoltaic panels have a lot of snow on the surface, which is difficult to melt in a short time in winter, reducing the normal working time of the photovoltaic panels and reducing working efficiency. In addition, when there is strong wind weather, the detection fan blades are used to move the higher side of the fixed frame downward at a certain wind speed to gradually align it with the lower side, reducing the inclination of the fixed frame, thereby reducing the blowing force of the wind on the fixed frame and the photovoltaic panel, ensuring the stability of the photovoltaic panel and avoiding a large degree of inclination of the photovoltaic panel. When the wind blows from the backlight side of the photovoltaic panel, the thrust on the photovoltaic panel is large, which can easily cause the photovoltaic panel to fall off and cause damage.

[0017] 2. In the process of automatic cleaning of snow on the surface of the photovoltaic panel of the present invention, when the first sliding cylinder moves downward under the action of the fixed frame and the gravity of the snow, the fixed frame will drive the swing arm to move downward together, and the swing arm will be rotated by the action of the toggle rod during the movement, and the knocking block will move to the side away from the fixed frame. Then, when the end of the swing arm is separated from the toggle rod, the swing arm will rotate under the action of elastic force, and the knocking block will knock the fixed frame, so that the fixed frame can vibrate during the rotation process, which is conducive to the sliding of snow on the surface of the photovoltaic panel, improves the cleaning speed, and ensures the cleaning effect.

[0018] 3. When the present invention automatically cleans snow on the surface of the photovoltaic panel, the buffer sleeve can buffer between the fixed frame and the first sliding cylinder to avoid direct collision between the fixed frame and the first sliding cylinder, which may cause the photovoltaic panel to loosen and affect the normal use of the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention after the photovoltaic panel is hidden;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at B in the middle;

[0023] Figure 5 It is a schematic diagram of the structure of the fixed frame, the short supporting legs and the tall supporting legs after being cut apart in the present invention;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure at C in the middle;

[0025] Figure 7 for Figure 5 Schematic diagram of the structure at D in the middle;

[0026] Figure 8 It is a schematic diagram of the structure of the short supporting leg after being cut open in the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the high support leg after being cut open in the present invention;

[0028] Fig.10 It is a structural schematic diagram of the connection relationship between the telescopic block and the rotating disk in the present invention.

[0029] The reference numerals are as follows:

[0030] 1-mounting plate, 2-short support leg, 3-high support leg, 4-fixed frame, 5-photovoltaic panel, 6-first sliding cylinder, 7-fixed plate, 8-first spring, 9-slide groove, 10-sliding rod, 11-fixed disk, 12-second spring, 13-trigger plate, 14-fixed rod, 15-rotating rod, 16-detection fan blade, 17-second sliding cylinder, 18-third spring, 19-giving notch, 20-winding rod, 21-rotating column, 22-pull rope, 23-rotating shaft, 24-synchronous belt, 25-telescopic block, 26-rotating disk, 27-groove, 28-limiting groove, 29-extension rod, 30-toggle rod, 31-swing rod, 32-knocking block, 33-buffer sleeve, 34-rubber pad, 35-limiting belt. DETAILED DESCRIPTION

[0031] See also Figure 1-Figure 10The present invention provides a technical solution: a concrete roof photovoltaic support system, comprising a mounting plate 1, wherein two short supporting legs 2 and two high supporting legs 3 are fixedly mounted on the surface of the mounting plate 1, wherein the short supporting legs 2 and the high supporting legs 3 are both hollow cylindrical, and an inclined fixed frame 4 is commonly arranged at the upper ends of the two short supporting legs 2 and the two high supporting legs 3, and a photovoltaic panel 5 is installed in the fixed frame 4, and a telescopic mechanism is arranged inside the short supporting legs 2, and the telescopic mechanism is used to make the short supporting legs 2 shrink when subjected to pressure, and a limiting mechanism is arranged inside the short supporting legs 2, and the limiting mechanism is used to limit the telescopic mechanism before the pressure on the fixed frame 4 reaches a certain level, and a detection mechanism is arranged between the two high supporting legs 3, and the detection mechanism is used to detect the wind speed between the two high supporting legs 3, and a leveling mechanism is arranged inside the high supporting legs 3, and the leveling mechanism is used to make the higher side of the fixed frame 4 move to a state where it is level with the lower side, and a trigger mechanism is arranged inside the high supporting legs 3, and the trigger mechanism is used to make the leveling mechanism act on the fixed frame 4 to move when the detection mechanism detects that the wind speed reaches a certain level;

[0032] The retracting mechanism includes a first sliding cylinder 6, which slides inside the short supporting leg 2, a fixing plate 7 is fixedly connected inside the first sliding cylinder 6, a first spring 8 is fixedly connected to the bottom of the fixing plate 7, and the fixing frame 4 is located at the upper end of the first sliding cylinder 6;

[0033] The limiting mechanism includes two L-shaped slide grooves 9, which are respectively arranged on the front and rear side surfaces of the short support leg 2, and the slide grooves 9 penetrate the short support leg 2. The two slide grooves 9 are slidably connected with a sliding rod 10, and a fixed plate 11 is fixedly connected between the two sliding rods 10. The bottom of the first spring 8 is connected to the fixed plate 11, and the bottom of the fixed plate 11 is fixedly connected with a second spring 12, and the elastic coefficient of the second spring 12 is smaller than the elastic coefficient of the first spring 8. A trigger plate 13 is fixedly connected to the inner wall surface of the first sliding cylinder 6 corresponding to the position of the sliding rod 10, and the bottom of the trigger plate 13 is an inclined surface;

[0034] The detection mechanism includes a fixed rod 14, which is fixedly mounted on the surfaces of the two high support legs 3, and a plurality of rotating rods 15 are rotatably connected to the surface of the fixed rod 14, and a detection fan blade 16 is fixedly connected to the surface of the rotating rod 15;

[0035] The leveling mechanism includes a second sliding cylinder 17, which slides inside the high support leg 3, the bottom of the fixed frame 4 is hinged to the second sliding cylinder 17, the bottom of the second sliding cylinder 17 is connected to a third spring 18, the surface of the second sliding cylinder 17 is provided with a clearance slot 19, the clearance slot 19 runs through the second sliding cylinder 17, a reeling rod 20 is rotatably connected inside the high support leg 3, the reeling rod 20 is located below the clearance slot 19, the second sliding cylinder 17 is rotatably connected inside the high support leg 3, a rotating column 21 is rotatably connected, a pulling rope 22 is fixedly connected to the surface of the reeling rod 20, and the pulling rope 22 is connected to the bottom of the high support leg 3 after passing the rotating column 21;

[0036] The trigger mechanism includes two rotating shafts 23, both of which are rotatably connected to the surface of the fixed rod 14, and the rotating shafts 23 and the rotating rod 15 are jointly connected by a synchronous belt 24, and both of the rotating shafts 23 are located at the high support leg 3. Both of the rotating shafts 23 penetrate the high support leg 3 and extend to the inside of the high support leg 3. A plurality of telescopic blocks 25 are fixedly connected to the surface of the rotating shaft 23, and a rotating disk 26 is fixedly connected to the end of the winding rod 20. A groove 27 is provided on the surface of the rotating disk 26. The end of the rotating shaft 23 and the telescopic block 25 extend into the groove 27, and a plurality of limiting grooves 28 are provided on the inner wall of the groove 27. After the telescopic block 25 is extended, it will move into the limiting groove 28;

[0037] In the process of using the photovoltaic panel 5 to generate electricity, the photovoltaic panel 5 is installed in the installation frame to generate electricity. When heavy snow occurs, the snow on the surface of the photovoltaic panel 5 will gradually increase, and the gravity of the photovoltaic panel 5 and the fixed frame 4 will gradually increase. The fixed frame 4 will press down the first sliding cylinder 6, and the first spring 8 will be compressed. The fixed disk 11 and the sliding rod 10 will remain stable under the action of the slide groove 9. Subsequently, when the snow on the surface of the photovoltaic panel 5 reaches a certain weight, the first sliding cylinder 6 will drive the trigger plate 13 to move downward to the position of the sliding rod 10, and the trigger plate 13 will act on the sliding rod 10 to move to the longitudinal groove position of the slide groove 9, and the sliding rod 10 and the fixed disk 11 will move downward along the slide groove 9, and the fixed disk 11 will suddenly move downward under the action of the first spring 8, the second spring 12 will be compressed, the fixed frame 4 and one side of the photovoltaic panel 5 will move downward to produce a certain drop, the inclination of the photovoltaic panel 5 will increase, the snow on the surface of the photovoltaic panel 5 will be separated from the photovoltaic panel 5 and slide along the photovoltaic panel 5, which is beneficial to automatically remove the snow on the surface of the photovoltaic panel 5 when heavy snow occurs, without the need for manual cleaning, thereby ensuring the cleanliness of the surface of the photovoltaic panel 5 and avoiding more snow on the surface of the photovoltaic panel 5 in heavy snow weather. On the one hand, more snow can easily cause the photovoltaic panel 5 to be deformed and damaged due to squeezing, affecting the normal use of the photovoltaic panel 5, and on the other hand, the surface of the photovoltaic panel 5 A lot of snow is difficult to melt in a short time in winter, which reduces the normal working time of the photovoltaic panel 5 and reduces the working efficiency. Then the first sliding cylinder 6 will return to its original position under the action of the first spring 8 and the second spring 12, and the sliding rod 10 will move back to the horizontal groove of the slide groove 9; when there is strong wind, when the wind blows towards the backlight side of the photovoltaic panel 5, it will act on the detection blades 16 to rotate together, and the detection blades 16 will drive the rotating rod 15 to rotate together, and the rotating rod 15 will act on the rotating shaft 23 through the synchronous belt 24 to rotate together, and the rotating shaft 23 will rotate together with the telescopic block 25, and then when the wind speed reaches a certain level, the telescopic block 25 will extend under the action of centrifugal force, and the end of the telescopic block 25 will move to In the limiting groove 28, the rotating shaft 23 will drive the rotating disk 26 and the winding rod 20 to rotate together through the telescopic block 25 and the limiting groove 28. The rotation of the winding rod 20 will reel in the pulling rope 22, and the pulling rope 22 will pull the second sliding cylinder 17 downward through the rotating column 21. The third spring 18 is compressed, which is conducive to moving the higher side of the fixed frame 4 downward and gradually leveling it with the lower side, reducing the inclination of the fixed frame 4, thereby reducing the blowing force of the wind on the fixed frame 4 and the photovoltaic panel 5, ensuring the stability of the photovoltaic panel 5, and avoiding the photovoltaic panel 5 from tilting to a large extent. When the wind blows from the backlight side of the photovoltaic panel 5, the thrust on the photovoltaic panel 5 is large, which can easily cause the photovoltaic panel 5 to fall off and cause damage.

[0038] When the snow on the surface of the photovoltaic panel 5 is automatically cleaned, the snow on the surface of the photovoltaic panel 5 cannot slide off smoothly. As a further solution of the present invention, an L-shaped extension rod 29 is fixedly connected to the surface of the short supporting leg 2, and the end of the extension rod 29 extends to the side of the fixed frame 4. A plurality of toggle rods 30 of different lengths are fixedly connected to the surface of the extension rod 29. A swing rod 31 is elastically hinged to the surface of the fixed frame 4. The middle position of the swing rod 31 is hinged to the fixed frame 4. One end of the swing rod 31 extends to the position of the toggle rod 30. The other end of the swing rod 31 is fixedly connected to a knocking block 32, and the knocking block 32 extends to the bottom of the fixed frame 4.

[0039] During the process of automatic cleaning of snow on the surface of the photovoltaic panel 5, when the first sliding cylinder 6 moves downward under the action of the fixed frame 4 and the gravity of the snow, the fixed frame 4 will drive the swing rod 31 to move downward together, and the swing rod 31 will be rotated by the action of the toggle rod 30 during movement, and the knocking block 32 will move to the side away from the fixed frame 4. Then, when the end of the swing rod 31 is separated from the toggle rod 30, the swing rod 31 will rotate under the action of elastic force, and the knocking block 32 will knock on the fixed frame 4, so that the fixed frame 4 can vibrate during the rotation process, which is beneficial to the sliding of snow on the surface of the photovoltaic panel 5, improves the cleaning speed, and ensures the cleaning effect.

[0040] When the snow on the surface of the photovoltaic panel 5 is automatically cleaned, the first telescopic cylinder will suddenly move downward for a distance when it is pressed down to a certain extent, and the fixed frame 4 will collide with the first sliding cylinder 6. As a further solution of the present invention, a buffer sleeve 33 is fixedly connected to the upper end of the first sliding cylinder 6, and the buffer sleeve 33 is located between the first sliding cylinder 6 and the fixed frame 4;

[0041] When the snow on the surface of the photovoltaic panel 5 is automatically cleaned, the buffer sleeve 33 can buffer the space between the fixed frame 4 and the first sliding cylinder 6 to prevent the fixed frame 4 and the first sliding cylinder 6 from directly colliding, causing the photovoltaic panel 5 to loosen and affecting the normal use of the photovoltaic panel 5.

[0042] When the higher side of the fixed frame 4 moves downward, the wind speed changes greatly, which will cause the moving speed of the fixed frame 4 to increase. The faster movement of the fixed frame 4 can easily cause an impact between the fixed frame 4 and the second sliding cylinder 17. As a further solution of the present invention, a soft rubber pad 34 is fixedly connected to the upper end of the second sliding cylinder 17, and the rubber pad 34 is located between the second sliding cylinder 17 and the fixed frame 4.

[0043] When the higher side of the fixed frame 4 moves downward in windy weather, the fixed frame 4 will rotate around the second sliding cylinder 17, and the fixed frame 4 and the second sliding cylinder 17 will squeeze the rubber pad 34, thereby slowing down the downward movement of the fixed frame 4 to avoid the fixed frame 4 moving downward at a fast speed, which will cause an impact between the fixed frame 4 and the second sliding cylinder 17, thereby causing looseness between the fixed frame 4 and the second sliding cylinder 17, affecting the stability of the photovoltaic panel 5 and reducing the service life of the photovoltaic panel 5.

[0044] When the fixing frame 4 and the photovoltaic panel 5 move, the photovoltaic panel 5 is easy to become loose from the fixing frame 4. As a further solution of the present invention, a plurality of limiting bands 35 are fixedly connected to the surface of the fixing frame 4. The limiting bands 35 are located at the four corners of the fixing frame 4.

[0045] When the fixing frame 4 and the photovoltaic panel 5 move, the limiting belt 35 can limit the photovoltaic panel 5 from the four corners to ensure the stability between the photovoltaic panel 5 and the fixing frame 4 .

Claims

1. A concrete roof photovoltaic support system, comprising a mounting plate (1), characterized in that: Two short support legs (2) and two tall support legs (3) are fixedly mounted on the surface of the mounting plate (1); the short support legs (2) and the tall support legs (3) are both hollow cylindrical; the upper ends of the two short support legs (2) and the two tall support legs (3) are jointly provided with an inclined fixed frame (4); a photovoltaic panel (5) is mounted in the fixed frame (4); a telescopic mechanism is provided inside the short support leg (2); the telescopic mechanism is used to make the short support leg (2) contract when subjected to pressure; a limiting mechanism is provided inside the short support leg (2); the limiting mechanism is used to The telescopic mechanism is restricted before the pressure on the fixed frame (4) reaches a certain level. A detection mechanism is provided between the two high support legs (3), and the detection mechanism is used to detect the wind speed between the two high support legs (3). A leveling mechanism is provided inside the high support leg (3), and the leveling mechanism is used to move the higher side of the fixed frame (4) to a level state with the lower side. A trigger mechanism is provided inside the high support leg (3), and the trigger mechanism is used to cause the leveling mechanism to act on the fixed frame (4) to move when the detection mechanism detects that the wind speed reaches a certain level.

2. A concrete roof photovoltaic support system according to claim 1, characterized in that: The retracting mechanism comprises a first sliding cylinder (6), the first sliding cylinder (6) slides inside the short supporting leg (2), a fixing plate (7) is fixedly connected inside the first sliding cylinder (6), a first spring (8) is fixedly connected to the bottom of the fixing plate (7), and the fixing frame (4) is located at the upper end of the first sliding cylinder (6).

3. A concrete roof photovoltaic support system according to claim 2, characterized in that: The limiting mechanism comprises two L-shaped slide grooves (9), the two slide grooves (9) are respectively arranged on the front and rear side surfaces of the short supporting leg (2), the slide groove (9) passes through the short supporting leg (2), the two slide grooves (9) are slidably connected with a sliding rod (10), a fixed plate (11) is fixedly connected between the two sliding rods (10), the bottom of the first spring (8) is connected to the fixed plate (11), the bottom of the fixed plate (11) is fixedly connected with a second spring (12), the elastic coefficient of the second spring (12) is smaller than the elastic coefficient of the first spring (8), and a trigger plate (13) is fixedly connected to the inner wall surface of the first sliding cylinder (6) corresponding to the position of the sliding rod (10), and the bottom of the trigger plate (13) is an inclined surface.

4. A concrete roof photovoltaic support system according to claim 1, characterized in that: The detection mechanism comprises a fixed rod (14), wherein the fixed rod (14) is fixedly mounted on the surfaces of the two high support legs (3), a plurality of rotating rods (15) are rotatably connected to the surface of the fixed rod (14), and a detection fan blade (16) is fixedly connected to the surface of the rotating rod (15).

5. A concrete roof photovoltaic support system according to claim 4, characterized in that: The leveling mechanism comprises a second sliding cylinder (17), the second sliding cylinder (17) slides inside the high supporting leg (3), the bottom of the fixed frame (4) is hinged to the second sliding cylinder (17), the bottom of the second sliding cylinder (17) is connected to a third spring (18), the surface of the second sliding cylinder (17) is provided with a clearance slot (19), the clearance slot (19) passes through the second sliding cylinder (17), the high supporting leg (3) is rotatably connected to a winding rod (20), the winding rod (20) is located below the clearance slot (19), the second sliding cylinder (17) is rotatably connected to a rotating column (21), the surface of the winding rod (20) is fixedly connected to a pulling rope (22), the pulling rope (22) is connected to the bottom of the high supporting leg (3) after passing around the rotating column (21).

6. A concrete roof photovoltaic support system according to claim 5, characterized in that: The trigger mechanism comprises two rotating shafts (23), both of which are rotatably connected to the surface of the fixed rod (14), and the rotating shafts (23) and the surface of the rotating rod (15) are jointly connected by a synchronous belt (24), and both of the rotating shafts (23) are located at the position of the high support leg (3), and both of the rotating shafts (23) penetrate the high support leg (3) and extend to the inside of the high support leg (3), and a plurality of telescopic blocks (25) are fixedly connected to the surface of the rotating shaft (23), and a rotating disk (26) is fixedly connected to the end of the winding rod (20), and a groove (27) is provided on the surface of the rotating disk (26), and the end of the rotating shaft (23) and the telescopic block (25) both extend into the groove (27), and a plurality of limiting grooves (28) are provided on the inner wall of the groove (27), and the telescopic block (25) moves into the limiting groove (28) after being extended.

7. A concrete roof photovoltaic support system according to claim 1, characterized in that: An L-shaped extension rod (29) is fixedly connected to the surface of the short supporting leg (2), the end of the extension rod (29) extends to the side of the fixed frame (4), a plurality of toggle rods (30) of different lengths are fixedly connected to the surface of the extension rod (29), a swing rod (31) is elastically hinged to the surface of the fixed frame (4), the middle position of the swing rod (31) is hinged to the fixed frame (4), one end of the swing rod (31) extends to the position of the toggle rod (30), and the other end of the swing rod (31) is fixedly connected to a knocking block (32), and the knocking block (32) extends to the bottom of the fixed frame (4).

8. A concrete roof photovoltaic support system according to claim 2, characterized in that: A buffer sleeve (33) is fixedly connected to the upper end of the first sliding cylinder (6), and the buffer sleeve (33) is located between the first sliding cylinder (6) and the fixed frame (4).

9. A concrete roof photovoltaic support system according to claim 5, characterized in that: A soft rubber pad (34) is fixedly connected to the upper end of the second sliding cylinder (17), and the rubber pad (34) is located between the second sliding cylinder (17) and the fixed frame (4).

10. A concrete roof photovoltaic support system according to claim 1, characterized in that: A plurality of limiting bands (35) are fixedly connected to the surface of the fixing frame (4), and the limiting bands (35) are located at the four corners of the fixing frame (4).

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