Photovoltaic support structure installed on roof

Abstract

The invention discloses a photovoltaic support structure mounted on a roof, which is characterized in that a plurality of inclined steel beams are arranged on large prestressed concrete roof panels on two sides of a roof ridge at intervals, are flatly laid along the slope direction of the roof and are supported above joints of the large prestressed concrete roof panels; the inclined steel beams are fixedly connected with hanging rings on the large prestressed concrete roof panels on the two sides of the inclined steel beams through profile steel connecting pieces, a plurality of steel purlins stretching out in the longitudinal direction are laid on the inclined steel beams at intervals, and photovoltaic panels are laid on the steel purlins. The inclined steel beams and the hanging rings on the large prestressed concrete roof panel are fixed together through the profile steel connecting pieces, so that the inclined steel beams are fixed, then the steel purlins are laid on the inclined steel beams, photovoltaic panels can be conveniently installed, and the photovoltaic panels can be conveniently installed under the conditions that the large prestressed concrete roof panel is not damaged and production is not affected through the structure. A photovoltaic panel is laid on the large prestressed concrete roof panel.

Description

Technical Field

[0001] The invention relates to a photovoltaic support structure, in particular to a photovoltaic support structure installed on a roof. Background Art

[0002] Solar energy is a clean and renewable energy source. Solar power generation is one of the new energy sources with mature technology, large-scale development conditions and commercial development prospects. The development and utilization of solar energy resources is of great significance to adjusting the energy structure and alleviating environmental pollution.

[0003] Many industrial plants built 20 years ago have roof trusses with large prestressed concrete roof panels on them. In combination with the demand for photovoltaic power generation, the roof of the plant can be fully utilized and photovoltaic panels can be laid on the roof to generate electricity. All the electricity generated is self-generated and used for the plant load nearby. By adopting such a "self-generation and self-use" operation mode, enterprises can adjust their energy consumption structure, reduce fossil fuel consumption, and reduce their electricity costs.

[0004] However, there is a big problem in laying photovoltaic panels on large prestressed concrete roof panels. That is, large prestressed concrete roof panels are prefabricated components in the form of plate ribs and thin plates. The thinnest part of the thin plate is only 30mm, and the vertical stiffness is weak. If the commonly used photovoltaic brackets and foundations are installed directly, it is very easy to damage the roof panels, causing rain leakage and water seepage, affecting production. Summary of the invention

[0005] The purpose of the present invention is to provide a photovoltaic support structure installed on a roof. The structure can lay photovoltaic panels on a large prestressed concrete roof panel without damaging the large prestressed concrete roof panel and affecting production.

[0006] The technical solution of the present invention is as follows: a photovoltaic support structure installed on a roof, comprising a plurality of large prestressed concrete roof panels laid flat on the roof of a factory building, a plurality of inclined steel beams are arranged at intervals on the large prestressed concrete roof panels on both sides of the roof ridge, the inclined steel beams are laid flat along the roof slope direction and supported above the joints of the plurality of large prestressed concrete roof panels, the inclined steel beams are fixedly connected to the hanging rings on the large prestressed concrete roof panels on both sides thereof via steel connectors, a plurality of steel purlins extending longitudinally are laid at intervals on the inclined steel beams, and photovoltaic panels are laid flat on the steel purlins; The steel connector includes a vertical steel connector welded and fixed to the lifting ring, the upper end of the vertical steel connector is fixedly connected to a horizontal steel connector, and the other end of the horizontal steel connector is fixedly connected to the side wall of the inclined steel beam; Each large prestressed concrete roof panel is equipped with an inclined steel beam at the joint in the length direction.

[0007] In the aforementioned photovoltaic support structure installed on the roof, the ends of two inclined steel beams on the same section on both sides of the roof ridge are welded and fixed together.

[0008] In the aforementioned photovoltaic support structure installed on the roof, each inclined steel beam is provided with at least two lifting ring connections, and the inclined steel beam at each lifting ring connection is fixedly connected to the lifting rings at adjacent end corners on four large prestressed concrete roof panels arranged closely together through four steel connectors.

[0009] In the aforementioned photovoltaic support structure installed on the roof, the interval between the two hanging ring connections is 3 to 4 large prestressed concrete roof panel widths.

[0010] In the aforementioned photovoltaic support structure installed on the roof, each inclined steel beam is provided with a hanging ring connection near the eaves and the ridge.

[0011] In the aforementioned photovoltaic support structure installed on the roof, the inclined steel beam is an I-beam.

[0012] Beneficial effects of the present invention: Compared with the prior art, the present invention is provided with an inclined steel beam, and the inclined steel beam is fixed to the hanging ring on the large prestressed concrete roof panel through a steel connector, and two inclined steel beams at the ridge are welded together, so as to realize the fixation of the inclined steel beam, and then steel purlins are laid on the inclined steel material, so that the photovoltaic panel can be conveniently installed. Through this structure, the photovoltaic panel can be laid on the large prestressed concrete roof panel without destroying the large prestressed concrete roof panel and affecting production. The present invention can meet the bearing capacity requirements and use requirements, and is convenient to construct and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram when a lifting ring connection is set on the inclined steel beam; Figure 3 It is a structural schematic diagram of the connection between the inclined steel beam and the lifting ring; Figure 4 for Figure 3 A schematic diagram of a top view structure; Figure 5 This is a schematic diagram of laying inclined steel beams; Figure 6 It is the structural schematic diagram of the large prestressed concrete roof panel (top view and main view); Figure 7 for Figure 1 A partial schematic diagram of .

[0014] Figure numerals: 1-large prestressed concrete roof panel, 2-inclined steel beam, 3-lifting ring, 4-steel connector, 5-steel purlin, 6-photovoltaic panel, 7-roof truss. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] An embodiment of the present invention: A photovoltaic support structure installed on a roof, comprising a plurality of large prestressed concrete roof panels 1 laid flat on the roof of a factory building, a plurality of inclined steel beams 2 are arranged at intervals on the large prestressed concrete roof panels 1 on both sides of the roof ridge, the inclined steel beams 2 are laid flat along the roof slope direction and supported above the joints of the plurality of large prestressed concrete roof panels 1, the inclined steel beams 2 are fixedly connected to the hanging rings 3 on the large prestressed concrete roof panels 1 on both sides thereof via steel connectors 4, a plurality of steel purlins 5 extending longitudinally are laid at intervals on the inclined steel beams 2, and photovoltaic panels 6 are laid flat on the steel purlins 5.

[0017] The inclined steel beam 2 should not be laid flat on the thin plate of the large prestressed concrete roof panel 1 during the installation process, otherwise the large prestressed concrete roof panel 1 is very likely to be damaged, affecting production. For this reason, the inclined steel beam 2 is laid flat along the roof slope direction and supported above the joints of multiple large prestressed concrete roof panels 1, combined with Figure 6 It can be seen that each large prestressed concrete roof panel 1 has short side ribs protruding downwards at both ends of the bottom along its width direction. Figure 5 It can be seen that the factory roof is fully covered with large prestressed concrete roof panels 1, the length direction of the large prestressed concrete roof panels 1 is in the same direction as the longitudinal direction of the factory building, and its width direction is the slope direction of the roof. Because when the roof in the form of a truss is fully covered with large prestressed concrete roof panels 1, the bottoms of the short side ribs of the large prestressed concrete roof panels 1 are supported on the roof truss 7, so that the inclined steel beam 2 can be located directly above the roof truss 7, so that in the entire structure, the load borne by the inclined steel beam 2 can be transmitted to the roof truss 7 through the short side ribs of the large prestressed concrete roof panels 1, thereby supporting the roof components through the roof truss 7 to avoid damage to the large prestressed concrete roof panels 1 due to the pressure of the newly added components.

[0018] The steel connector 4 includes a vertical steel connector 401 welded and fixed to the lifting ring 3, the upper end of the vertical steel connector 401 is welded and fixedly connected to a horizontal steel connector 402, and the other end of the horizontal steel connector 402 is welded and fixedly connected to the side wall of the inclined steel beam 2. In the specific connection process, when the position of the lifting ring connection is confirmed, the lifting ring 3 to be connected to the lifting ring connection is first chiseled out, because the lifting ring 3 itself is set inside the large prestressed concrete roof panel 1, and its surface is covered with building surface layers such as a waterproof layer and a thermal insulation layer. After the building surface layers on the surface of the large prestressed concrete roof panel 1 are removed, the lifting ring 3 is exposed, and then the steel connector 4 is welded and fixed to the lifting ring 3.

[0019] Each large prestressed concrete roof panel 1 is provided with an inclined steel beam 2 at the joint in the length direction, and the steel purlins 5 above it can be better supported by multiple inclined steel beams 2 .

[0020] The ends of two inclined steel beams 2 on the same section at both sides of the roof ridge are welded and fixed together, which can offset a part of the load of the inclined steel beams 2 along the slope direction.

[0021] Each inclined steel beam 2 is provided with at least two lifting ring connections, and the inclined steel beam 2 at each lifting ring connection is fixedly connected to the lifting rings 3 at adjacent end corners of four closely arranged large prestressed concrete roof panels 1 through four steel connectors 4, and the four closely arranged large prestressed concrete roof panels 1 are respectively arranged on both sides of the inclined steel beam 2 in pairs, and at the same time, the multiple large prestressed concrete roof panels 1 on both sides of the inclined steel beam 2 limit the downward force of the inclined steel beam 2, so as to avoid a large prestressed concrete roof panel 1 being subjected to pressure alone and easily damaged. This structure ensures that the inclined steel beam 2 and the large prestressed concrete roof panel 1 can be well fixed together.

[0022] The interval between the two lifting ring connections is 3 to 4 large prestressed concrete roof panels 1 widths, which has a good fixing effect on the inclined steel beam 2 and avoids the interval being too small, which requires a large number of steel connectors 4.

[0023] Each inclined steel beam 2 is provided with a lifting ring connection near the eaves and the ridge. The lifting ring connections at both ends of the inclined steel beam 2 can better fix it.

[0024] The inclined steel beam 2 is an I-beam, which is easy to purchase and install. When in use, its two side walls are welded and fixed to the horizontal steel connectors 402 in the steel connectors 4 on both sides of the inclined steel beam 2, and its top surface is used to support and fix the steel purlins 5.

[0025] The present invention connects the lifting ring 3 on the large prestressed concrete roof panel 1 with the inclined steel beam 2 through a steel connector 4. The inclined steel beam 2 is fixed on the large prestressed concrete roof panel 1 on the top of the roof truss 7. Steel purlins 5 are laid on the inclined steel beams 2, and then photovoltaic panels 6 are laid flat on the steel purlins 5. The slope of the photovoltaic panels 6 is the same as the slope of the original roof.

[0026] The construction steps of the photovoltaic support structure on the large prestressed concrete roof panel are as follows: Step 1: Determine the specifications of the inclined steel beam 2 and the position where the lifting ring 3 is connected to the inclined steel beam 2 through force calculation. The spacing of the lifting ring connection is generally three large prestressed concrete roof panels 1 or four panels (4.5m to 6m), one each near the eaves and the ridge, and each inclined steel beam 2 has at least two lifting ring connections. The inclined steel beam 2 is laid flat along the slope of the roof, and the two inclined steel beams 2 are welded together at the ridge to offset part of the load along the slope.

[0027] Step 2: Refer to the professional construction drawings of the structure and the 92G410 atlas "Prestressed Concrete Roof Panels". On the roof of the factory building, determine the location of the lifting ring 3 on the large prestressed concrete roof panel 1 on site. The lifting ring 3 is located on the rib in the long direction of the panel, 350mm to 600mm away from the edge in the width direction of the panel. The lifting ring is generally a plain round steel bar with a diameter of 10mm, and each panel has four lifting rings 3.

[0028] Step 3: Connect the lifting ring 3 on the large prestressed concrete roof panel 1 with the inclined steel beam 2 through the steel connector 4 to fix the inclined steel beam 2 on the large prestressed concrete roof panel 1. The inclined steel beam 2 must be located directly above the roof truss 7. The load borne by the inclined steel beam 2 can be transferred to the roof truss 7 through the plate ribs of the large prestressed concrete roof panel 1. The inclined steel beam 2 should not be laid flat on the thin plate, otherwise the large prestressed concrete roof panel 1 is very likely to be damaged, affecting production.

[0029] Step 4: Lay steel purlins 5 on the inclined steel beams 2, and then lay photovoltaic panels 6 on the steel purlins 5. The slope of the photovoltaic panels 6 is the same as the slope of the original roof. The steel purlins 5 are connected to the inclined steel beams 2 through purlin brackets. The purlin brackets and the inclined steel beams 2 are welded together in the factory and then transported to the construction site for assembly, reducing the welding workload on site.

Claims

1. A photovoltaic support structure installed on a roof, comprising a plurality of large prestressed concrete roof panels (1) laid flat on the roof of a factory building, characterized in that: A plurality of inclined steel beams (2) are arranged at intervals on the large prestressed concrete roof panels (1) on both sides of the roof ridge. The inclined steel beams (2) are laid flat along the roof slope direction and supported above the joints of the plurality of large prestressed concrete roof panels (1). The inclined steel beams (2) are fixedly connected to the hanging rings (3) on the large prestressed concrete roof panels (1) on both sides thereof via steel connectors (4). A plurality of steel purlins (5) extending in the longitudinal direction are laid at intervals on the inclined steel beams (2), and photovoltaic panels (6) are laid flat on the steel purlins (5). The steel connector (4) comprises a vertical steel connector (401) welded and fixed to the lifting ring (3); the upper end of the vertical steel connector (401) is fixedly connected to a horizontal steel connector (402); the other end of the horizontal steel connector (402) is fixedly connected to the side wall of the inclined steel beam (2); Each large prestressed concrete roof panel (1) is provided with an inclined steel beam (2) at a joint in the length direction.

2. A photovoltaic support structure installed on a roof according to claim 1, characterized in that: The ends of two inclined steel beams (2) on the same cross section at both sides of the roof ridge are welded and fixed together.

3. A photovoltaic support structure installed on a roof according to claim 1, characterized in that: At least two lifting ring connections are arranged on each inclined steel beam (2), and the inclined steel beam (2) at each lifting ring connection is fixedly connected to lifting rings (3) at adjacent end corners of four closely arranged large prestressed concrete roof panels (1) via four steel connectors (4).

4. A photovoltaic support structure installed on a roof according to claim 3, characterized in that: The distance between the two lifting ring connections is equal to the width of 3 to 4 large prestressed concrete roof panels (1).

5. A photovoltaic support structure installed on a roof according to claim 3, characterized in that: Each inclined steel beam (2) is provided with a hanging ring connection near the eaves and the ridge.

6. A photovoltaic support structure installed on a roof according to claim 1, characterized in that: The inclined steel beam (2) is an I-beam.

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