Roof photovoltaic support and assembling method thereof

Abstract

The invention discloses a roof photovoltaic support and an assembling method thereof.The roof photovoltaic support comprises bottom layer main beams, purlines, counterweight foundations and photovoltaic assemblies, and the bottom layer main beams are arranged above roof panel ribs in parallel and coincide in the plate rib direction; the purlines are arranged perpendicular to the direction of the bottom-layer main beam and are connected with the bottom-layer main beam at intersections; the photovoltaic module is fixed at the upper part of the purline; and the counterweight foundation is arranged at the position of the main beam of the door steel structure and is connected with the bottom-layer main beam. Based on the load-bearing characteristics of the large-span steel skeleton light roof panel, the provided photovoltaic support structural form can ensure that newly-added loads are applied to the positions of stress components of an original roof structure, and the safety of the roof structure is enhanced.

Description

Technical Field

[0001] This invention pertains to photovoltaic module installation structures, and particularly relates to a rooftop photovoltaic support structure and its assembly method. Background Technology

[0002] Large-span steel-framed lightweight roof panels differ from conventional roof structures. Their spans reach 6 meters or more, and the panels feature ribs along the sides in the span direction, providing excellent load-bearing capacity and effectively transferring loads to the main beams of the roof truss. The central portion of the roof panel is relatively weak and unsuitable for directly bearing concentrated loads; the conventional method of using a counterweight foundation with full steel supports is no longer applicable to this type of roof. Therefore, conventional roof photovoltaic support systems are not suitable for large-span steel-framed lightweight roof panels. Summary of the Invention

[0003] The purpose of this invention is to provide a roof photovoltaic support structure and its assembly method. Based on the load-bearing characteristics of the large-span steel frame lightweight roof panel, the provided photovoltaic support structure can ensure that the new load is applied to the original load-bearing components of the roof structure, thereby enhancing the safety of the roof structure.

[0004] To achieve the above objectives, the solution of the present invention is:

[0005] A roof photovoltaic support system includes a bottom main beam, purlins, a counterweight foundation, and photovoltaic modules. The bottom main beam is arranged parallel to the roof panel ribs and overlaps with them along the rib direction. The purlins are arranged perpendicular to the bottom main beam and are connected to it at their intersections. The photovoltaic modules are fixed to the upper part of the purlins. The counterweight foundation is located at the position of the portal frame main beam and is connected to the bottom main beam.

[0006] A through-hole is made in the lower middle part of the aforementioned counterweight foundation, corresponding to the position of the bottom main beam. The bottom main beam passes through the foundation hole and is connected to the counterweight foundation via an adapter.

[0007] The type of steel used for the purlins is selected based on the required stress conditions due to the spacing of the bottom main beams.

[0008] A method for assembling a rooftop photovoltaic (PV) bracket, comprising:

[0009] The bottom main beam is placed above the roof slab ribs and overlaps with the rib direction;

[0010] Purlins are arranged perpendicular to the direction of the bottom main beam, and the purlins are connected to the bottom main beam at the intersection.

[0011] Fix the photovoltaic modules to the upper part of the purlin;

[0012] A counterweight foundation is arranged at the location of the main beam of the portal frame structure, and the counterweight foundation is connected to the bottom main beam.

[0013] Specifically, a through foundation hole is made at the lower middle part of the counterweight foundation, corresponding to the position of the bottom main beam; the bottom main beam passes through the foundation hole and is connected to the counterweight foundation through an adapter.

[0014] The type of steel used for the purlins is selected based on the stress requirements of the spacing of the bottom main beams.

[0015] After adopting the above solution, this invention has invented a new photovoltaic support structure based on the structural characteristics of large-span steel frame lightweight roof panels. The force transmission path of this invention is clear, ensuring that the new load is applied to the original load-bearing components of the roof structure through the support, thereby enhancing the safety of the roof structure. Attached Figure Description

[0016] Figure 1 This is a planar schematic diagram of the present invention;

[0017] Figure 2 yes Figure 1 Section 1-1 in

[0018] Figure 3 yes Figure 1 Section 2-2 in the figure;

[0019] Figure 4 yes Figure 2 Section 3-3 in the figure.

[0020] Figure label:

[0021] 1-Location of the main beam of the portal frame structure; 2-Bottom main beam; 3-Purlin; 4-Counterweight foundation; 5-Photovoltaic module; 6-Connecting angle steel; 7-Connecting bolt; 8-Foundation hole; 9-Steel beam bearing point. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0023] In the description of this invention, it should be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.

[0024] The relevant technical details of the present invention are described below with reference to the accompanying drawings.

[0025] This invention provides a roof photovoltaic support system, comprising several bottom main beams 2, several purlins 3, several counterweight foundations 4, and several photovoltaic modules 5. The quantity of each component is determined according to actual conditions. The bottom main beams 2 are arranged parallel to the roof panel ribs and overlap along the rib direction. The purlins 3 are arranged perpendicular to the bottom main beams 2 and connect to them at their intersections, allowing for coordinated operation. Figure 3 The photovoltaic module 5 is fixed to the upper part of the purlin 3 by a pressure block; the counterweight foundation 4 is arranged at position 1 of the main beam of the portal frame structure and connected to the bottom main beam 2, thereby providing a pressing effect on the bottom main beam 2, which can be used in conjunction with Figure 2 .

[0026] Can be used simultaneously Figure 4 As shown, a through foundation hole 8 is opened in the lower middle part of the counterweight foundation 4 at the position corresponding to the bottom main beam 2. The size of the foundation hole 8 is preferably such that the bottom main beam 2 can pass through. The bottom main beam 2 is reliably connected to the counterweight foundation 4 through a transition piece composed of connecting angle steel 6 and connecting bolts 7. At the same time, the bottom main beam 2 passes through the foundation hole 8, so that the counterweight foundation 4 can press down on the bottom main beam 2.

[0027] As a preferred embodiment of the present invention, the stress requirements can be calculated based on the spacing of the bottom main beam 2, and the purlin 3 can be selected from cold-formed thin-walled steel or other steel that meet the stress requirements.

[0028] This invention also provides an assembly method for the aforementioned roof photovoltaic support structure. During assembly, the bottom main beam 2 is first arranged above the ribs of the roof panel, overlapping along the rib direction. Purlins 3 are arranged perpendicular to the bottom main beam 2, and the purlins 3 are connected to the bottom main beam 2 via structural connectors. The purlins 3 are selected from cold-formed thin-walled steel or other steel profiles that meet the load-bearing requirements after calculation based on the spacing of the bottom main beam 2. The photovoltaic modules 5 are fixed to the upper part of the purlins 3 using clamps. (Refer to...) Figure 1 and Figure 4 As can be seen, the counterweight foundation 4 needs to be located at position 1 of the main beam of the portal frame structure, and the size of the foundation is determined by calculation. A through-beam hole 8 is opened in the lower middle part of the counterweight foundation 4, corresponding to the position of the bottom main beam 2. The size of the hole should be such that the bottom main beam 2 can pass through. The bottom main beam 2 is reliably connected to the counterweight foundation 4 via a connector consisting of connecting angle steel 6 and connecting bolts 7. Simultaneously, the bottom main beam 2 passes through the foundation hole 8, allowing the counterweight foundation 4 to provide a pressing and supporting effect on the bottom main beam 2.

[0029] This invention provides a roof photovoltaic support system and its assembly method, which avoids the risk of adding additional loads to the weak parts of the roof panel in the middle of the traditional photovoltaic support system. Especially for large-span steel frame lightweight roof panels with large spans, low reinforcement ratios and thin panels, this invention can achieve roof safety and reliability through reasonable force transmission.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A rooftop photovoltaic support system, characterized in that: The system includes a bottom main beam, purlins, a counterweight foundation, and photovoltaic modules. The bottom main beam is arranged parallel to the roof panel ribs and overlaps with them along the rib direction. The purlins are arranged perpendicular to the bottom main beam and are connected to it at their intersections. The photovoltaic modules are fixed to the upper part of the purlins. The counterweight foundation is located at the position of the portal frame main beam and is connected to the bottom main beam.

2. A rooftop photovoltaic support system as described in claim 1, characterized in that: A through-hole is made in the lower middle part of the counterweight foundation, corresponding to the position of the bottom main beam. The bottom main beam passes through the foundation hole and is connected to the counterweight foundation through a connector.

3. A rooftop photovoltaic support system as described in claim 1, characterized in that: The type of steel used for the purlins is selected based on the stress requirements of the spacing of the bottom main beams.

4. A method for assembling a rooftop photovoltaic support system, characterized in that: include, The bottom main beam is placed above the roof slab ribs and overlaps with the rib direction; Purlins are arranged perpendicular to the direction of the bottom main beam, and the purlins are connected to the bottom main beam at the intersection. Secure the photovoltaic modules to the upper part of the purlins; A counterweight foundation is arranged at the location of the main beam of the portal frame structure, and the counterweight foundation is connected to the bottom main beam.

5. The method as described in claim 4, characterized in that: A through-hole is made in the lower middle part of the counterweight foundation, corresponding to the position of the bottom main beam; the bottom main beam passes through the foundation hole and is connected to the counterweight foundation through a connector.

6. The method as described in claim 4, characterized in that: The type of steel used for the purlins is selected based on the stress requirements of the spacing of the bottom main beams.

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