Base support structure for photovoltaic guide rail

Abstract

The utility model provides a base support structure for a photovoltaic guide rail, which comprises a base plate fixedly mounted on a roof, the upper surface of the base plate is covered with a layer of waterproof film, and the middle part of the base plate is provided with a screw column penetrating through the waterproof film. The periphery of the screw column is sequentially sleeved with a cover plate with an arch in the middle and a pressing ring from bottom to top, the cover plate covers a gap between the waterproof film and the screw column, and the pressing ring seals a gap between a through hole in the middle of the cover plate and the screw column. A first nut in threaded fit with the screw column is arranged above the pressing ring, and the cover plate and the pressing ring are tightly pressed towards the base plate by screwing down the first nut, so that water flow is prevented from flowing into the lower portion of the waterproof film through a gap between the screw column and the waterproof film; a second nut is arranged above the first nut in the screw column, and a rail fixing assembly is detachably installed above the second nut. The waterproof structure is better in waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic brackets, specifically to a base bracket structure for photovoltaic guide rails. Background Technology

[0002] The installation of photovoltaic modules requires fixing them in a certain orientation, arrangement and spacing, taking into account the geographical, climatic and solar energy resource conditions of the construction site. Usually, before laying photovoltaic modules, guide rails need to be installed in the support structure fixed to the roof.

[0003] An existing photovoltaic guide rail base bracket structure (announcement number CN220964706U) achieves a good sealing effect by covering the base plate with a waterproof membrane and using a pressure ring to seal the gap between the screw post and the waterproof membrane. However, during long-term use, it has been found that due to the connection process between the base plate and the screw post, different sized protrusions are formed at the connection point. For example, when using the riveting process, the protrusion is smaller and the pressure ring seals better. However, when using the lower-cost welding process, the protrusion is larger, and the sealing effect of the pressure ring will be worse. Due to the different processes, the flatness of the top of the protrusion is inconsistent, which easily leads to water leakage after long-term use.

[0004] Therefore, this utility model proposes a base bracket structure for photovoltaic guide rails that is applicable to different connection processes and has better waterproof performance. Utility Model Content

[0005] This utility model provides a base support structure for photovoltaic guide rails, which can effectively solve the above-mentioned problems.

[0006] This utility model is implemented as follows:

[0007] A base support structure for a photovoltaic guide rail includes a base plate fixedly installed on the roof, the upper surface of which is covered with a waterproof membrane, and further includes:

[0008] A screw post passing through the waterproof membrane is provided in the middle of the base plate, and a cover plate with an arched center and a pressure ring are sequentially fitted around the screw post from bottom to top. The cover plate covers the gap between the waterproof membrane and the screw post, and the pressure ring seals the gap between the through hole in the middle of the cover plate and the screw post. A first nut that is threaded to the screw post is provided above the pressure ring. Tightening the first nut presses the cover plate and the pressure ring against the base plate to prevent water from flowing into the area below the waterproof membrane through the gap between the screw post and the waterproof membrane.

[0009] A second nut is provided above the first nut in the screw rod, and a track fixing assembly is detachably installed above the second nut.

[0010] As a further improvement, the base plate has a process boss at the connection with the screw post, and the upward arching of the middle of the cover plate forms a groove on the bottom surface, which covers the boss.

[0011] As a further improvement, a waterproof gasket is provided on the lower surface of the cover plate.

[0012] As a further improvement, the track fixing assembly includes a cantilever bracket, which is locked to the screw post by a third nut, and the position of the cantilever bracket on the screw post is adjusted by the second nut and the third nut.

[0013] As a further improvement, the base plate is provided with four arc-shaped mounting holes.

[0014] As a further improvement, the cantilever bracket is provided with a strip groove.

[0015] The beneficial effects of this utility model are:

[0016] By setting a cover plate on the base bracket structure for photovoltaic guide rails, the sealing coverage area around the position where the screw column passes through the waterproof membrane is larger, which can better prevent water from entering the gap between the screw column and the waterproof membrane. Furthermore, a pressure ring is set above the cover plate to seal the gap between the cover plate and the screw column.

[0017] The cover plate has an arch in the middle and a groove at the bottom, which allows for unrestricted processing of the base plate and the screw post. It can use a lower-cost and more efficient welding process, and the protrusions produced by the welding will not affect the waterproof effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an exploded view provided in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram of the cover plate structure provided in an embodiment of this utility model.

[0022] Figure 4This is a schematic diagram of track installation provided in an embodiment of this utility model.

[0023] Figure label:

[0024] 1. Base plate; 11. Mounting hole; 2. Screw rod; 3. Waterproof membrane; 4. Waterproof washer; 5. Cover plate; 51. Groove; 6. Pressure ring; 7. First nut; 8. Second nut; 9. Cantilever bracket; 10. Third nut. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0026] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Reference Figure 1-4As shown, a base support structure for a photovoltaic guide rail includes a base plate 1 fixedly installed on the roof. The upper surface of the base plate 1 is covered with a waterproof membrane 3, and the spread area of ​​the waterproof membrane 3 should be larger than the surface of the base plate 1. A screw post 2 passing through the waterproof membrane 3 is provided in the middle of the base plate 1, and a cover plate 5 with an arched center and a pressure ring 6 (the pressure ring 6 is prior art and can be replaced with other better solutions, so its structure will not be described in detail in this embodiment) are sequentially fitted around the screw post 2 from bottom to top. The arched center of the cover plate 5 can prevent water from accumulating on the upper surface, and water can flow along the surface. The water flows away, and the cover plate 5 covers the gap between the waterproof membrane 3 and the screw post 2. The pressure ring 6 seals the gap between the through hole in the middle of the cover plate 5 and the screw post 2. A first nut 7 that is threaded into the screw post 2 is provided above the pressure ring 6. Tightening the first nut 7 downwards presses the cover plate 5 and the pressure ring 6 against the base plate 1 to prevent water from flowing into the area below the waterproof membrane 3 through the gap between the screw post 2 and the waterproof membrane 3. A second nut 8 is provided above the first nut 7 in the screw post 2. A track fixing assembly (the existing track fixing assembly has various structural forms) is detachably installed above the second nut 8.

[0028] A process boss is formed at the connection between the base plate 1 and the screw post 2. The boss is usually formed by welding or riveting. Since the bottom surface of the base plate 1 needs to be flat for better installation on the roof, the process boss is on the upper surface of the base plate 1. After assembly, the contact position between the waterproof membrane 3 and the boss will also form a corresponding arch. The middle of the cover plate 5 has an upward arch, which forms a groove 51 on the bottom surface. The size of the groove 51 is large enough to cover the boss, and the perimeter of the groove 51 fits better with the waterproof membrane 3.

[0029] The waterproof membrane 3 is usually made of flexible material. In order to improve its sealing performance, a waterproof gasket 4 can be set on the lower surface of the cover plate 5. It can adapt to the unevenness of the sealing surface, fill the tiny gaps, and improve the sealing performance.

[0030] The track fixing assembly includes a cantilever bracket 9, which is locked to the screw column 2 by a third nut 10. The position of the cantilever bracket 9 on the screw column 2 is adjusted by a second nut 8 and a third nut 10. The cantilever bracket 9 is provided with a strip groove, which can be used to lock the track fixing seat. In the prior art, the structure of the track fixing seat is diverse, and those skilled in the art can replace it according to the actual situation.

[0031] Compared with the existing technical solutions, which use press-fit nuts, the structure adopted in this embodiment makes it more convenient to adjust the height of the track fixing component. In the existing technical solutions, the height adjustment of the track fixing component needs to be achieved by replacing press-fit nuts of different heights, while in this embodiment, the height can be adjusted by adjusting the setting of the second nut 8 and the third nut 10.

[0032] The base plate 1 is provided with four equally spaced arc-shaped mounting holes 11, eight large circular holes, and twelve small circular holes, which can be flexibly adjusted in direction when installing the base plate 1.

[0033] The installation steps of this utility model will be described in detail below:

[0034] The base plate 1 and the screw column 2 are fixedly connected during manufacturing. In use, the base plate 1 is fixed to the roof with bolts or ground nails. Then, the waterproof membrane 3 is covered on the base plate 1, and the waterproof membrane 3 is bonded to the base plate 1 with waterproof adhesive. The cover plate 5, the pressure ring 6 and the first nut 7 are installed on the screw column 2 in sequence. The first nut 7 is tightened downward to make the waterproof membrane 3, the cover plate 5 and the pressure ring 6 fit tightly. Then, the second nut 8, the track fixing assembly and the third nut 10 are installed on the screw column 2 in sequence. The position and height of the track fixing assembly can be adjusted by adjusting the height of the second nut 8. Finally, the guide rail is installed in the track fixing assembly.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A base support structure for a photovoltaic rail, comprising a base plate (1) fixedly mounted on a roof, wherein the upper surface of the base plate (1) is covered with a layer of waterproof membrane (3), characterized in that: Also includes: A screw column (2) passing through the waterproof membrane (3) is provided in the middle of the base plate (1), and a cover plate (5) with an arch in the middle and a pressure ring (6) are sequentially sleeved on the circumference of the screw column (2) from bottom to top, the cover plate (5) covers the gap between the waterproof membrane (3) and the screw column (2), the pressure ring (6) seals the gap between the through hole in the middle of the cover plate (5) and the screw column (2), and a first nut (7) threadedly matched with the screw column (2) is provided above the pressure ring (6), and the first nut (7) is tightened to press the cover plate (5) and the pressure ring (6) toward the base plate (1) to prevent water from flowing through the gap between the screw column (2) and the waterproof membrane (3) and into the bottom of the waterproof membrane (3); A second nut (8) is provided above the first nut (7) in the screw column (2), and a track fixing assembly is detachably mounted above the second nut (8).

2. A photovoltaic rail base support structure according to claim 1, characterized in that: The base plate (1) is formed with a process boss at the connection with the screw column (2), and the middle part of the cover plate (5) is arched upward to form a groove (51) on the bottom surface, and the groove (51) covers the boss.

3. A photovoltaic rail base support structure according to claim 2, characterized in that: A waterproof gasket (4) is provided on the lower surface of the cover plate (5).

4. A photovoltaic rail base support structure according to claim 1, characterized in that: The rail fixing assembly comprises a cantilever bracket (9), the cantilever bracket (9) is locked on the screw column (2) through a third nut (10), and the position of the cantilever bracket (9) on the screw column (2) is adjusted through the second nut (8) and the third nut (10).

5. A photovoltaic rail base support structure according to claim 1, characterized in that: The base plate (1) is provided with four arc-shaped mounting holes (11).

6. A photovoltaic rail base support structure according to claim 4, characterized in that: The cantilever bracket (9) is provided with a strip groove.

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