Combined clamping pressing plate device and photovoltaic module installation method

Abstract

The invention discloses a combined clamping pressure plate device and a photovoltaic module installation method, and the combined clamping pressure plate device fixes two adjacent photovoltaic modules on a cross beam. Comprising two pressing plates correspondingly pressed on C edges of two photovoltaic module frames, a top plate arranged below a cross beam, two annular bending connecting pieces correspondingly connected with the two pressing plates and the top plate, and a base plate located between the cross beam and the top plate and movably connected with the two annular bending connecting pieces. The lower end of the bolt is connected with the base plate, the upper end of the bolt is pressed on the A sides of the two photovoltaic module frames, and the two photovoltaic module frames clamp the bolt to reduce the gap; in the bolt screwing process, the base plate abuts against the bottom face of the cross beam, the lower end of the bolt abuts against the top plate, and the annular bending connecting piece deforms and drives the pressing plate to move towards the frame under the action of the top plate and the base plate. Gaps can be reduced and filled to reduce the rain leakage risk, in addition, installation and construction are convenient, and the waterproof structure can be suitable for the situation that construction under the assembly is inconvenient and the waterproof requirement is high.

Description

[Technical field]

[0001] The invention belongs to the technical field of photovoltaic power generation equipment, and in particular relates to photovoltaic component installation technology. [Background technology]

[0002] With the development of the photovoltaic industry, when household photovoltaic power stations are installed, pressure blocks or pressure plates will be installed between two adjacent photovoltaic modules, which will cause a gap of at least 20mm between the modules. The Chinese patent with reference announcement number CN 218771845 U discloses a photovoltaic panel installation assembly, including a photovoltaic panel placed on a steel pipe purlin; also including a medium pressure block; the medium pressure block includes a first middle plate located in the middle, and the two side edges of the first middle plate extend upward and bend to form a first folding plate in the shape of a figure 7, and the two first folding plates are arranged facing each other outward; the outer side of the top of the first folding plate is used to overlap the edge of the photovoltaic panel, and the medium pressure plate is suspended between two adjacent photovoltaic panels; also includes a fixing plate; the fixing plate is provided with two first fixing holes; also includes a U-shaped screw; the two ends of the U-shaped screw pass through the first middle plate of the medium pressure block, the steel pipe purlin and the fixing plate and are screwed with two nuts to fix; the steel pipe purlin crosses the U-shaped screw, and the fixing plate is pressed against the steel pipe purlin to clamp and fix.

[0003] However, the risk of rain leakage increases after installing a power station on a sloping roof, which in turn increases the operation and maintenance costs. Currently, there are the following problems with the installation of pressure blocks / pressure plates:

[0004] First, the pressure blocks installed on the components have a 20mm gap between the components, which cannot avoid water leakage, and the risk of using pressure blocks is much greater than that of pressure plates;

[0005] Second, installing the pressure block on the component requires adding rubber strips and using water tanks to prevent water leakage, which results in high costs;

[0006] Third, before installing the pressure blocks and pressure plates under the modules, the assembly seams of the modules are filled with weather-resistant glue to prevent water leakage. However, since the modules are generally less than 40 cm away from the sloping roof, it is difficult for construction workers to operate, which increases the operation and maintenance costs.

[0007] Fourth, use a sink that has both drainage and load-bearing functions (such as an M-shaped sink) as an inclined beam. Since this type of sink must be used on each long side, the "sink inclined beam" is denser and the bracket cost is too high. [Summary of the invention]

[0008] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a combined clamping pressure plate device and a photovoltaic module installation method to reduce the module gap and solve the problem that the prior art cannot or is not convenient to install and construct at the bottom of the module.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] First, a combined clamping plate device is provided for fixing two adjacent photovoltaic modules on a beam, the combined clamping plate device comprises two clamping plates correspondingly clamped on the C sides of the frames of the two photovoltaic modules, a top plate arranged under the beam, two annular bent connectors correspondingly connecting the two clamping plates and the top plate, a pad located between the beam and the top plate and movably connected to the two annular bent connectors, and a bolt having a lower end connected to the pad and an upper end clamped on the A sides of the frames of the two photovoltaic modules, the two photovoltaic module frames clamp the bolts to reduce the gap; during the process of tightening the bolts, the pads support the bottom surface of the beam, the lower end of the bolts support the top plate, and the annular bent connector is deformed and the clamping plate is driven to move toward the frame through the action of the top plate and the pads; after tightening the bolts, under the action of the annular bent connector, the clamping plate presses and fixes the photovoltaic module to the beam.

[0011] Preferably, a nut is fixed on the pad, and the nut is connected to the bolt.

[0012] Preferably, the pad is provided with a movable limiting groove which is movably connected to the annular bending connecting piece. During the process of tightening the bolt, the pad moves upward relative to the annular bending connecting piece, so that the lower end of the bolt presses against the top plate, and the top plate moves downward. At the same time, the annular bending connecting piece is subjected to the downward pulling force of the top plate and the horizontal force of the movable limiting groove, driving the pressure plate to move toward the direction of the frame.

[0013] Preferably, the movable limiting groove is an L-shaped structure, including an entrance section and a limiting section that intersect vertically.

[0014] Preferably, the pad is a rectangular structure, four movable limiting grooves are correspondingly arranged at the four corners of the pad, the outer end of the entrance section is connected to the side of the pad, one end of the limiting section is connected to the inner end of the entrance section, and the other end extends toward the side of the pad.

[0015] Preferably, lower buckle grooves are provided on opposite sides of the bottom of the top plate, and the lower end of the annular bent connector is buckled in the lower buckle grooves.

[0016] Preferably, the top plate is provided with a transverse section extending transversely and a longitudinal convex portion extending from the middle of the transverse section to both longitudinal sides, and two lower buckle grooves are correspondingly provided at the bottom of both transverse sides of the transverse section.

[0017] Preferably, the annular bent connector is provided with at least two bent portions along the up-and-down direction; and / or the annular bent connector is formed by bending an annular steel bar.

[0018] Preferably, the annular bending connector is provided with an upper bending portion close to the upper end and a lower bending portion close to the lower end along the up and down directions, and the upper bending portion bends the upper end of the annular bending connector toward the frame direction, and the lower bending portion bends the lower end of the annular bending connector away from the frame direction.

[0019] Preferably, the pressure plate is provided with an upper buckle groove, and the upper end of the annular bending connector is buckled in the upper buckle groove.

[0020] Preferably, the C-side of the photovoltaic module frame is provided with an inner extension edge extending horizontally inward, and the pressing plate is provided with a pressing portion pressed on the inner extension edge; and / or an upper limit plate is provided above the upper buckle groove.

[0021] Preferably, the pressing plate is provided with a supporting portion arranged opposite to the pressing portion and supported on the cross beam, and the pressing plate is provided with a concave cavity between the pressing portion and the supporting portion; and / or, a cavity is provided above the pressing portion.

[0022] Preferably, the gap between the frames of two adjacent photovoltaic modules is filled with glue.

[0023] In addition, the present invention also provides a method for installing a photovoltaic module, which is installed using the combined clamping plate device, and includes the following steps:

[0024] Step 1: Insert the two annular bending connectors into the beam from the ends of the beam;

[0025] Step 2: Place two photovoltaic modules on the beam, leave a gap, and place two annular bending connectors in the gap;

[0026] Step 3: The top plate buckles the lower ends of the two annular bending connectors;

[0027] Step 4: Connect the pad to the two annular bending connectors;

[0028] Step 5: Connect the upper end of the annular bending connector to the pressing plate;

[0029] Step 6: Lift the photovoltaic module and place the pressure plate under the photovoltaic module;

[0030] Step 7: Connect the bolts to the backing plate threads and tighten the bolts to complete the installation.

[0031] The present invention adopts the above technical solution and has the following beneficial effects:

[0032] 1. The frame clamp bolts of two adjacent photovoltaic modules are used to reduce the gap. Taking M6 bolts as an example, the gap can be reduced to 6mm. At present, there are power stations with waterproof requirements and modules with gaps of up to 6m. They are filled with durable and adhesive materials such as weather-resistant structural adhesives to reduce the risk of rain leakage.

[0033] In order to facilitate installation and construction, the combined clamping plate device is first assembled together, then connected to the photovoltaic module, and finally the bolts are tightened from the top. That is, when the photovoltaic module is installed, the pressure plate, top plate, annular bending connector, pad and bolts can be pre-assembled, and preliminarily assembled with the beam and photovoltaic module in advance, and then the bolts are tightened. During the tightening of the bolts, the vertical constraint of the top plate + the horizontal constraint of the pad + the mechanical deformation of the annular bending connector are used to realize the movement of the pressure plate and the compression of the photovoltaic module frame, and fix the photovoltaic module on the beam.

[0034] After the combined clamping pressure plate device is assembled in batches before construction, it is only necessary to tighten the bolts. Moreover, since the combined clamping pressure plate device is fixed by tightening the bolts above the photovoltaic modules, it is more convenient during construction and avoids construction and maintenance personnel from operating under the modules, thus facilitating construction and operation and maintenance.

[0035] Therefore, it can be used in situations where it is inconvenient to construct under the components and high waterproof requirements are required.

[0036] In addition, after the bolts are tightened, the pad presses against the bottom surface of the beam, and the lower end of the bolt presses against the top plate. Due to the limiting effect of the top plate and the pad, the deformed annular bent connector maintains a downward pulling force on the pressure plate, so that the pressure plate firmly presses and fixes the photovoltaic module to the beam. The ultimate load of a single pressure plate can reach 6.1KN, which is safer and has a higher bearing capacity.

[0037] 2. Nuts are fixed on the pad, for example, by welding the nuts, or by processing the nuts on the pad. In addition, the annular bending connector is movably connected to the movable limit groove on the pad, and the movable limit groove limits the horizontal movement of the annular bending connector, and also allows the annular bending connector to be extended and retracted up and down. In this way, during the process of tightening the bolts from above, due to the action of the nuts, the pad moves upward relative to the annular bending connector, but due to the limitation of the cross beam, the bolt moves downward, and the lower end of the tightened bolt is supported, and the top plate moves downward. At the same time, the downward pulling force of the top plate and the horizontal force of the movable limit groove on the annular bending connector cause the pressure plate to move toward the frame direction, and at the same time, the projection of the annular bending connector in the vertical direction continues to increase. When the projection of the annular bending connector in the vertical direction is the largest, the pressure plate firmly fixes the photovoltaic module and the cross beam.

[0038] 3. The movable limiting groove is an L-shaped structure, including an entrance section and a limiting section that intersect vertically. The outer end of the entrance section is connected to the side of the pad to facilitate the entry of the annular bent connector. One end of the limiting section is connected to the inner end of the entrance section, and the other end extends to the side of the pad, so that the annular bent connector enters the limiting section through the entrance section. During the tightening of the bolt, the limiting section applies horizontal constraints to the annular bent connector relative to one end of the entrance section, so that it is not easy for the annular bent connector to detach from the movable limiting groove.

[0039] Since the pad is a rectangular structure, the four movable limiting grooves are correspondingly arranged at the four corners of the pad, which just cooperate with the two annular bending connectors.

[0040] 4. Lower buckle grooves are provided on opposite sides of the bottom of the top plate, and the lower end of the annular bent connector is buckled in the lower buckle groove, which is convenient for installation. In the process of tightening the bolts, the lower end of the tightened bolts presses against the top plate, the top plate moves downward, and the lower buckle groove pulls the lower end of the annular bent connector downward, and it is not easy for the lower end of the annular bent connector to be separated from the lower buckle groove.

[0041] 5. The longitudinal convex portion can improve the overall structural strength of the top plate, and combined with the limit of the lower buckle groove, the two annular bent connectors can be separated to facilitate installation.

[0042] 6. The annular bending connector is formed by bending annular steel bars, which is convenient for bending and forming, has large elastic deformation, and has low cost.

[0043] 7. The annular bent connector realizes mechanical deformation through at least two bent parts arranged in the up-down direction and produces the effect of moving the pressing plate and pressing it downward.

[0044] The annular bending connector is provided with an upper bending portion close to the upper end and a lower bending portion close to the lower end in the up-down direction, and the upper bending portion bends the upper end of the annular bending connector toward the frame, and the lower bending portion bends the lower end of the annular bending connector away from the frame, and at the same time, an oblique section is formed between the upper bending portion and the lower bending portion, and the oblique section passes through the movable limiting groove. In this way, during the process of tightening the bolt, the lower end of the annular bending connector is subjected to the downward pulling force of the top plate, and the movable limiting groove applies a horizontal restraining force to the oblique section, so that the upper end of the annular bending connector moves toward the frame, and drives the pressure plate to move toward the frame.

[0045] 8. An upper buckle groove is provided on the pressure plate, and the upper end of the annular bent connector is buckled in the upper buckle groove, which is convenient for installation. In the process of tightening the bolts, the upper end of the annular bent connector drives the pressure plate to move toward the frame through the upper buckle groove. In addition, since the top plate moves downward and pulls the annular bent connector downward, the upper end of the annular bent connector is tightly buckled in the upper buckle groove, and it is not easy for the upper end of the annular bent connector to be detached from the upper buckle groove.

[0046] 9. Since the C side of the photovoltaic module frame is provided with an inner extension edge extending horizontally inward, and the pressing plate is provided with a pressing portion pressed on the inner extension edge, the pressing plate does not occupy the gap space between the frames of two adjacent photovoltaic modules, which is conducive to reducing the gap. Moreover, the above arrangement is also that during the process of tightening the bolts, the pressing plate is moved toward the frame, and finally the pressing portion is pressed on the inner extension edge.

[0047] 10. The pressing plate is provided with a supporting part arranged relative to the pressing part and supported on the cross beam, so that the pressing part is pressed on the inner extension edge. In addition, the pressing plate is provided with a concave cavity between the pressing part and the supporting part to ensure that the pressing part is pressed on the inner extension edge while the supporting part is supported on the cross beam. An upper limit plate is provided above the upper buckle groove to limit the upper end of the annular bending connector from being separated from the upper buckle groove, and a cavity is provided above the pressing part to save materials.

[0048] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0049] The invention will be further described below in conjunction with the accompanying drawings:

[0050] Figure 1 It is a schematic diagram of the structure of the combined clamping plate device of the present invention before tightening the bolts;

[0051] Figure 2 It is a schematic diagram of the structure of the combined clamping plate device of the present invention after assembly;

[0052] Figure 3 It is a side view of the combined clamping plate device of the present invention after being assembled;

[0053] Figure 4 It is a structural schematic diagram of the pressing plate;

[0054] Figure 5 is a schematic diagram of the structure of the pad;

[0055] Figure 6 is a schematic diagram of the structure of the top plate;

[0056] Figure 7 is a schematic diagram of the structure of the top plate;

[0057] Figure 8 This is the top view of the decorative cover plate + flat spring washer combination;

[0058] Figure numerals: photovoltaic component 1, frame 11, A edge 111, B edge 112, C edge 113, inner extension edge 114, cross beam 2, pressure plate 3, upper buckle groove 31, pressing portion 32, support portion 33, concave cavity 34, upper limit plate 35, upper limit protrusion 36, cavity 37, annular bending connector 4, upper bending portion 41, lower bending portion 42, oblique section 43, bolt 5, gasket 6, movable limiting groove 61, entrance section 611, limiting section 612, nut 7, top plate 8, lower buckle groove 81, longitudinal lower rib 811, lower limiting protrusion 812, longitudinal reinforcing rib 82, longitudinal protrusion 83, cover plate and flat spring washer assembly 9, cover plate 91, flat spring washer 92. [Specific implementation method]

[0059] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0060] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0061] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the following words indicating orientation or positional relationship such as "upper", "lower", "horizontal", "vertical", etc. are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0063] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0064] Referring to the prior art, Figure 4 As shown in the example, the photovoltaic module 1 is rectangular and is surrounded by a rectangular frame 11 . The conventional frame has an A side 111 , a B side 112 , and a C side 113 , wherein the C side 113 is provided with an inner extension side 114 extending horizontally inward.

[0065] In a photovoltaic system, from an economic point of view, several photovoltaic modules are usually arranged in a rectangular array to increase the power generation area. The present invention is also explained by setting up a photovoltaic array. A photovoltaic bracket is provided under the photovoltaic array for installing photovoltaic modules 1. The photovoltaic bracket includes a longitudinal beam and a transverse beam 2. Two adjacent photovoltaic modules 1 are fixed on the transverse beam 2 side by side.

[0066] Reference Figures 1 to 8 As shown, this embodiment provides a combined clamping plate device for fixing two adjacent photovoltaic modules 1 on a crossbeam 2. The combined clamping plate device includes two clamping plates 3 correspondingly clamped on the C edge 113 of the frame of the two photovoltaic modules, a top plate 8 provided below the crossbeam 2, two annular bending connectors 4 correspondingly connecting the two clamping plates 3 and the top plate 8, a pad 6 located between the crossbeam and the top plate and movably connected to the two annular bending connectors, and a bolt 5 having a lower end connected to the pad 6 and an upper end clamped on the A edge 111 of the frame of the two photovoltaic modules.

[0067] The frames 11 of two adjacent photovoltaic modules clamp the bolts 5 to reduce the gap. In addition, the gap between the edges 112 of the frames B of two adjacent photovoltaic modules can be filled with glue.

[0068] During the process of tightening the bolts, the backing plate 6 first presses against the bottom surface of the beam 2, and the lower end of the bolt 5 presses against the top plate 8. Then, the bolts are tightened, and the annular bending connector 4 is deformed by the action of the top plate 8 and the backing plate 6, and the pressing plate 3 is driven to move toward the frame. After tightening the bolts, under the action of the annular bending connector 4, the pressing plate 3 presses and fixes the photovoltaic module 1 to the beam 2.

[0069] In the above technical solution, the frame clamping bolts of two adjacent photovoltaic modules are used to reduce the gap. Taking M6 bolts as an example, the gap can be reduced to 6mm. At present, power stations with waterproof requirements and modules with gaps of up to 6m are filled with durable and adhesive materials such as weather-resistant structural adhesives, which reduces the risk of rain leakage.

[0070] To facilitate installation and construction, the combined clamping plate device is first assembled together, then connected to the photovoltaic module, and finally the bolts are tightened from above.

[0071] Specifically, when installing photovoltaic modules, the pressure plate, top plate, annular bending connector, pad and bolts can be pre-assembled and preliminarily combined with the beam and photovoltaic module, and then the bolts are tightened. During the tightening of the bolts, the pressure plate is moved and the frame of the photovoltaic module is pressed by the vertical constraint of the top plate + the horizontal constraint of the pad + the mechanical deformation of the annular bending connector, so that the photovoltaic module is fixed on the beam.

[0072] After the combined clamping pressure plate device is assembled in batches before construction, it is only necessary to tighten the bolts. Moreover, since the combined clamping pressure plate device is fixed by tightening the bolts above the photovoltaic modules, it is more convenient during construction and avoids construction and maintenance personnel from operating under the modules, thus facilitating construction and operation and maintenance.

[0073] Therefore, it can be used in situations where it is inconvenient to construct under the components and high waterproof requirements are required.

[0074] In addition, after the bolts are tightened, the pad presses against the bottom surface of the beam, and the lower end of the bolt presses against the top plate. Due to the limiting effect of the top plate and the pad, the deformed annular bent connector maintains a downward pulling force on the pressure plate, so that the pressure plate firmly presses and fixes the photovoltaic module to the beam. The ultimate load of a single pressure plate can reach 6.1KN, which is safer and has a higher bearing capacity.

[0075] In order to drive the top plate to move during the process of tightening the bolts, a nut 7 is fixed on the pad 6, and the nut 7 is connected to the bolt 5. Specifically, the nut can be welded and fixed under the pad, or the nut can be thickened and processed on the pad. The pad 6 is provided with a movable limit groove 61 that is movably connected to the annular bending connector 4. During the process of tightening the bolts, the pad moves upward relative to the annular bending connector, and the lower end of the tightened bolt presses against the top plate, causing the top plate to move downward. At the same time, the annular bending connector is subjected to the downward pulling force of the top plate and the horizontal force of the movable limit groove, causing the pressure plate to move toward the frame direction.

[0076] Therefore, in the above technical scheme, the movable limit groove limits the horizontal movement of the annular bending connector and also allows the annular bending connector to extend and retract up and down. In this way, during the process of tightening the bolts from above, due to the action of the nut, the pad moves upward relative to the annular bending connector, but due to the limitation of the cross beam, the bolt moves downward, and the lower end of the tightened bolt presses against the top plate and moves downward. At the same time, the downward pulling force of the top plate and the horizontal force of the movable limit groove on the annular bending connector cause the pressure plate to move toward the frame direction. At the same time, the projection of the annular bending connector in the vertical direction continues to increase. When the projection of the annular bending connector in the vertical direction is the largest, the pressure plate firmly fixes the photovoltaic module and the cross beam.

[0077] As one of the implementation methods, Figure 5 As shown, the movable limiting groove 61 is an L-shaped structure, including an inlet section 611 and a limiting section 612 that intersect vertically. In addition, the pad 6 can be designed as a rectangular structure, with four movable limiting grooves 61 correspondingly arranged at the four corners of the pad, and the nut 7 is welded and fixed between two adjacent movable limiting grooves 61 in the transverse direction, and roughly corresponds to the longitudinal position of the limiting section 612. Among them, the outer end of the inlet section is connected to one of the two adjacent sides of the pad, and one end of the limiting section is connected to the inner end of the inlet section, and the other end extends to the other side of the two adjacent sides of the pad.

[0078] The L-shaped structural design of the above-mentioned movable limiting groove can facilitate the entry of the annular bending connector. One end of the limiting section is connected to the inner end of the entrance section, and the other end extends to the side of the pad, so that the annular bending connector enters the limiting section through the entrance section. In the process of tightening the bolts, the limiting section applies horizontal constraints to the annular bending connector relative to one end of the entrance section, so it is not easy for the annular bending connector to detach from the movable limiting groove.

[0079] Since the pad is a rectangular structure, the four movable limit grooves are correspondingly arranged at the four corners of the pad, which just cooperate with the two annular bending connectors, that is, the two movable limit grooves on the lateral side correspond to cooperate with one of the annular bending connectors. Taking the annular bending connector as a rectangular ring as an example, the two movable limit grooves correspond to cooperate with the two length side edges of one of the annular bending connectors.

[0080] like Figure 6 and Figure 7 As shown, the bottom of the top plate 8 is provided with longitudinally penetrating lower buckle grooves 81 on opposite sides in the horizontal direction, and the lower end of the annular bending connector 4 is buckled in the lower buckle groove 81. It is convenient to install the lower end of the annular bending connector 4, and in the process of tightening the bolts, the lower end of the tightened bolts presses against the top plate, the top plate moves downward, and the lower buckle groove pulls the lower end of the annular bending connector downward, and it is not easy for the lower end of the annular bending connector to be separated from the lower buckle groove. The top plate 8 is provided with a transverse section extending transversely and a longitudinal convex portion 83 extending from the middle of the transverse section to both sides in the longitudinal direction, and two lower buckle grooves are correspondingly arranged at the bottom of the transverse sides of the transverse section. The bottom of the top plate 8 is provided with longitudinal lower convex ribs 811 on opposite sides to form the lower buckle groove 81, and the longitudinal lower convex ribs 811 are provided with lower limit protrusions 812 on the inner side of the lower buckle groove. In addition, the transverse middle position of the top plate 8 is provided with longitudinal reinforcing ribs 82 extending longitudinally. The longitudinal convex portion and the longitudinal reinforcing ribs can improve the overall structural strength of the top plate. The lower limit projection 812 has the function of preventing the lower end of the annular bending connector 4 from being disengaged from the lower buckle groove 81. In addition, the longitudinal projection combined with the limit of the lower buckle groove can separate the two annular bending connectors to facilitate installation.

[0081] In order to generate sufficient force during the deformation process, the annular bending connector 4 is provided with at least two bending parts in the up and down directions. Mechanical deformation is achieved through at least two bending parts, and the pressure plate is moved and pressed downward. Preferably, the annular bending connector 4 is formed by bending annular steel bars, that is, the steel bars are first bent into rectangular rings, and then the rectangular rings are bent relative to the length direction, so that one side of the rectangular ring width serves as the upper end of the annular bending connector, and the other side of the rectangular ring width serves as the lower end of the annular bending connector. In addition, the annular bending connector can be made of steel bars, which is convenient for bending and forming, has large elastic deformation, and is also low in cost.

[0082] Furthermore, the annular bending connector 4 is provided with an upper bending portion 41 near the upper end and a lower bending portion 42 near the lower end in the up-down direction, and the upper bending portion bends the upper end of the annular bending connector toward the frame, and the lower bending portion bends the lower end of the annular bending connector away from the frame. At the same time, an oblique section 43 is formed between the upper bending portion 41 and the lower bending portion 42, and the oblique section passes through the movable limiting groove. In this way, during the process of tightening the bolt, the lower end of the annular bending connector is subjected to the downward pulling force of the top plate, and the movable limiting groove applies a horizontal restraining force to the oblique section, so that the upper end of the annular bending connector moves toward the frame, and drives the pressure plate to move toward the frame.

[0083] like Figure 4 As shown, the upper part of the pressing plate 3 is provided with a longitudinally penetrating upper buckle groove 31, and the upper end of the annular bent connector 4 is buckled in the upper buckle groove 31. The upper buckle groove opens upward, which is convenient for installing the upper end of the annular bent connector 4. During the process of tightening the bolts, the upper end of the annular bent connector drives the pressing plate to move toward the frame through the upper buckle groove; in addition, since the top plate moves downward and pulls the annular bent connector downward, the upper end of the annular bent connector is tightly buckled in the upper buckle groove, and it is not easy for the upper end of the annular bent connector to be separated from the upper buckle groove.

[0084] Furthermore, the pressing plate 3 is provided with a pressing portion 32 pressed against the inner extension edge. Since the pressing portion is located inside the frame B edge, the pressing plate does not occupy the gap space between the frames of two adjacent photovoltaic modules, which is conducive to reducing the gap. Moreover, the above arrangement is also that during the process of tightening the bolts, the pressing plate is moved toward the frame direction, and finally the pressing portion is pressed against the inner extension edge.

[0085] In addition, the pressing plate 3 is provided with a supporting portion 33 arranged opposite to the pressing portion and supported on the cross beam, and the pressing plate is provided with a concave cavity 34 between the pressing portion 32 and the supporting portion 33, so as to ensure that the pressing portion 32 is pressed on the inner extension edge 114 while the supporting portion is supported on the cross beam. The supporting portion 33 extends in the direction of the pressing portion 32 from the concave cavity 34, and the upper buckle groove 31 is located above the concave cavity 34 between the pressing portion 32 and the supporting portion 33. In this way, the upper end of the annular bent connector is buckled in the upper buckle groove, generating a downward force, and since the supporting portion is supported on the cross beam, the pressing portion generates a force to press the inner extension edge.

[0086] Furthermore, an upper limit plate 35 is provided above the upper buckle groove 31, and the upper limit plate extends obliquely downward toward one side of the support portion, and an upper limit protrusion 36 is provided on the lower side of the free end. When the upper end of the annular bending connector is pressed into the upper buckle groove, it interacts with the upper limit protrusion, causing the upper limit plate to deform upward, and after being pressed into the upper buckle groove, the upper limit plate returns to its original shape downward, and the upper limit plate cooperates with the upper limit protrusion to limit the upper end of the annular bending connector from being separated from the upper buckle groove. A cavity 37 is provided at the upper part of the pressing part, which can save materials and reduce costs.

[0087] like Figure 2 and Figure 8 As shown, two bolts 5 are provided in this embodiment to ensure reliable fixation. The two bolts 5 are arranged side by side in the longitudinal direction. Correspondingly, two nuts 7 are provided on the pad 6, which are located on both sides of the longitudinal direction of the transverse middle position of the pad 6. In addition, the two bolts 5 are covered with a cover plate and a flat spring washer assembly 9 above the A side 111 of the photovoltaic module frame. The cover plate and the flat spring washer assembly 9 include a cover plate 91 and two flat spring washers 92, wherein the cover plate 91 is rectangular, and the two sides of the length are respectively pressed on the A side 111 of the photovoltaic module frame on both sides, and the flat spring washers 92 are located above the cover plate 91.

[0088] Preferably, the top plate 8 is a profile, and the pressing plate 3 is also a profile, such as an aluminum alloy profile. It can be extruded by a die to produce large specifications, which not only has a low cost, but also will not rust after long-term use. In addition, the pad 6 is a sheet metal part. It is not only anti-corrosion and has a long service life, but also has a light weight and high strength, and can also be mass-produced to reduce processing costs.

[0089] The installation process of the above-mentioned combined clamping plate device is as follows:

[0090] Step 1: insert two annular bent connectors 4 into the cross beam 2 from the ends of the cross beam 2;

[0091] Step 2: Place two photovoltaic modules 1 on the beam 2, leaving a gap of about 10 cm between the two photovoltaic modules 1, and place two annular bent connectors 4 in the gap;

[0092] Step 3: Place the top plate 8, wherein the two lower buckle grooves 81 face downwards and buckle the lower ends of the two annular bent connectors 4 respectively;

[0093] Step 4: Tilt the backing plate 6 at a certain angle so that the movable limiting groove 61 on one side is sleeved on one of the annular bending connectors 4, and then use the same method to sleeve the movable limiting groove 61 on the other side on the other annular bending connector 4;

[0094] Step 5: buckle the upper end of the annular bent connector 4 into the upper buckle groove 31 of the pressing plate 3;

[0095] Step 6: Lift the photovoltaic module 1 and place the fixedly connected pressing plate 3 under the photovoltaic module;

[0096] Step 7: The two bolts 5 first pass through the flat spring washer assembly 9, and then pass through the pad 6 and the nut 7 welded to the pad in sequence. Apply structural weather-resistant glue to the frame of the assembly and push the assembly until the bolts are clamped;

[0097] Step 8: Tighten the first bolt 5. During the thread rotation process, the parts will undergo the following movements at the same time:

[0098] Due to the function of the nut 7 , when the annular bent connector 4 has the largest projection in the vertical direction, the pressing plate 3 firmly fixes the photovoltaic assembly 1 and the crossbeam 2 .

[0099] Step 9: Tighten the second bolt and the installation is complete;

[0100] As the pad 6 moves upward relative to the annular bending connector 4, the pressure plate 3 will inevitably move toward the component frame under the constraint. At the same time, the projection of the annular bending connector 4 in the vertical direction continues to increase until it is tightly engaged with the component frame and the crossbeam.

[0101] The above technical solution gives examples of the specific structures of the pressure plate, top plate, annular bending connector and pad, but it can be understood that the specific structures of the pressure plate, top plate, annular bending connector and pad are not limited to the above examples, and other changes can be made.

[0102] The above is only a specific embodiment of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. A combined clamping plate device for fixing two adjacent photovoltaic modules on a beam, characterized in that: The combined clamping pressure plate device includes two pressure plates correspondingly pressed on the C sides of the two photovoltaic component frames, a top plate arranged under the cross beam, two annular bent connectors correspondingly connecting the two pressure plates and the top plate, a pad located between the cross beam and the top plate and movably connected to the two annular bent connectors, and a bolt whose lower end is connected to the pad and whose upper end is pressed on the A sides of the two photovoltaic component frames, and the two photovoltaic component frames clamp the bolts to reduce the gap; during the process of tightening the bolts, the pads support the bottom surface of the cross beam, and the lower end of the bolts support the top plate, and the annular bent connector is deformed and the pressure plate is driven to move toward the frame through the action of the top plate and the pads; after tightening the bolts, under the action of the annular bent connector, the pressure plate presses and fixes the photovoltaic component to the cross beam.

2. A combined clamping plate device according to claim 1, characterized in that: A nut is fixed on the backing plate, and the nut is connected with the bolt.

3. A combined clamping plate device according to claim 2, characterized in that: The pad is provided with a movable limiting groove which is movably connected to the annular bending connecting piece. During the bolt tightening process, the pad moves upward relative to the annular bending connecting piece, so that the lower end of the bolt presses against the top plate, and the top plate moves downward. At the same time, the annular bending connecting piece is subjected to the downward pulling force of the top plate and the horizontal force of the movable limiting groove, driving the pressure plate to move toward the frame direction.

4. A combined clamping plate device according to claim 3, characterized in that: The movable limiting groove is an L-shaped structure, comprising an entrance section and a limiting section which intersect vertically.

5. A combined clamping plate device according to claim 4, characterized in that: The pad is a rectangular structure, and four movable limiting grooves are correspondingly arranged at the four corners of the pad. The outer end of the entrance section is connected to the side of the pad, one end of the limiting section is connected to the inner end of the entrance section, and the other end extends to the side of the pad.

6. A combined clamping plate device according to claim 1, characterized in that: Lower buckle grooves are provided on opposite sides of the bottom of the top plate, and the lower ends of the annular bent connectors are buckled in the lower buckle grooves.

7. A combined clamping plate device according to claim 6, characterized in that: The top plate is provided with a transverse section extending transversely and a longitudinal convex portion extending from the middle of the transverse section to both longitudinal sides, and two lower buckle grooves are correspondingly arranged at the bottom of both transverse sides of the transverse section.

8. The combined clamping plate device according to claim 1, characterized in that: The annular bent connector is provided with at least two bent portions along the up-down direction; and / or the annular bent connector is formed by bending an annular steel bar.

9. A combined clamping plate device according to claim 8, characterized in that: The annular bending connector is provided with an upper bending portion close to the upper end and a lower bending portion close to the lower end along the up-down direction, and the upper bending portion bends the upper end of the annular bending connector toward the frame direction, and the lower bending portion bends the lower end of the annular bending connector away from the frame direction.

10. The combined clamping plate device according to claim 1, characterized in that: The pressing plate is provided with an upper buckle groove, and the upper end of the annular bent connecting piece is buckled in the upper buckle groove.

11. A combined clamping plate device according to claim 10, characterized in that: The C side of the photovoltaic module frame is provided with an inner extension edge extending horizontally inward, and the pressing plate is provided with a pressing portion pressed on the inner extension edge; and / or an upper limit plate is provided above the upper buckle groove.

12. A combined clamping plate device according to claim 11, characterized in that: The pressing plate is provided with a supporting portion arranged opposite to the pressing portion and supported on the cross beam, and the pressing plate is provided with a concave cavity between the pressing portion and the supporting portion; and / or, a cavity is provided above the pressing portion.

13. The combined clamping plate device according to claim 1, characterized in that: The gap between the frames of two adjacent photovoltaic modules is filled with glue.

14. A method for installing a photovoltaic module, characterized in that: The installation is performed using the combined clamping plate device according to any one of claims 1 to 13, comprising the following steps: Step 1: Insert the two annular bending connectors into the beam from the ends of the beam; Step 2: Place two photovoltaic modules on the beam, leave a gap, and place two annular bending connectors in the gap; Step 3: The top plate buckles the lower ends of the two annular bending connectors; Step 4: Connect the pad to the two annular bending connectors; Step 5: Connect the upper end of the annular bending connector to the pressing plate; Step 6: Lift the photovoltaic module and place the pressure plate under the photovoltaic module; Step 7: Connect the bolts to the backing plate threads and tighten the bolts to complete the installation.

Images