Foundation-free photovoltaic support for non-accessible roof

Abstract

The foundation-free photovoltaic support comprises a support, a first connecting structure and a second connecting structure, the first connecting structure comprises a first tie bar and a second tie bar which are arranged on a parapet wall, the other end of the first tie bar is arranged on the upper portion of a side column of the support, and the other end of the second tie bar is arranged on the upper portion of the side column of the support. The lower part of the second tie bar is arranged at the lower part of the side column; the second connecting structure comprises an upper connecting tie bar and a lower connecting tie bar which are used for connecting the side columns of the multi-truss support together, and the side column and the stand column of each truss support are connected together through a plurality of lower chord members. The vertical columns and the side columns of each truss support are connected together through the lower chord members, so that the overall rigidity of the multi-truss support is improved; column feet of the side columns and the stand columns of each truss of support are directly placed on the roof, the side columns are connected with the parapet wall through the first tie bars and the second tie bars, wind power is resisted through the first tie bars and the second tie bars, a concrete foundation does not need to be arranged, the influence on the roof is small, and the utilization rate of the roof is increased.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic installation, and in particular to a foundation-free photovoltaic bracket used for non-accessible roofs. Background Art

[0002] Distributed photovoltaic power generation is a new type of power generation and comprehensive energy utilization method with broad development prospects. It follows the principles of local power generation, local grid connection, local conversion and local use. It not only effectively increases the power generation of photovoltaic power stations of the same size, but also effectively solves the problem of power loss in voltage boosting and long-distance transportation. At present, the most widely used distributed photovoltaic power generation system is the photovoltaic power generation project built on the roofs of urban buildings. There are two types of roofs of urban buildings: accessible roofs and non-accessible roofs. For non-accessible roofs, their design load-bearing capacity is relatively low, which cannot meet the installation requirements of a large number of concrete foundation blocks, and thus cannot realize the direct installation of photovoltaic brackets on the roof. How to design a photovoltaic bracket that has less impact on non-accessible roofs and can meet the needs of photovoltaic installation is an important problem that photovoltaic installation projects need to overcome. Summary of the invention

[0003] In view of this, the utility model proposes a foundation-free photovoltaic bracket for non-walkable roofs. Under the premise of ensuring the strength of the parapet, the load is transferred to the parapet of the roof, which has little impact on the roof.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a foundationless photovoltaic support for non-walkable roofs, wherein the foundationless photovoltaic support is a truss structure, which includes multiple supports with the same structure, and also includes a first connection structure connecting each support and a parapet wall together, and a second connection structure connecting multiple supports together, wherein the first connection structure includes a first tie rod and a second tie rod arranged on the parapet wall, the other end of the first tie rod is arranged on the upper part of the side column of the support, the second tie rod is arranged obliquely downward from the parapet wall, and the lower part of the second tie rod is arranged on the lower part of the side column; the second connection structure includes an upper connection tie rod and a lower connection tie rod connecting the side columns of multiple supports together, the upper connection tie rod is located at the upper part of the side column, and the lower connection tie rod is located at the lower part of the side column; the side column and the column of each support are connected together by a plurality of lower chords.

[0006] The beneficial effect is that the side columns of the multi-frame bracket of the utility model are connected together by the lower connecting tie rod and the upper connecting tie rod, so that the multi-frame bracket is connected to form a whole, and the top of the multi-frame bracket is also connected by a purlin, which further improves the integrity of the multi-frame bracket. The column feet of the side columns and columns of each bracket are directly placed on the roof, and the side columns of each bracket in the multi-frame bracket are connected to the parapet through the first tie rod and the second tie rod, and then the load is transferred to the parapet. The first tie rod and the second tie rod are used to resist the wind force. There is no need to configure a concrete foundation. Not only is the impact on the roof small, but also the utilization rate of the roof is improved and the installed capacity is increased.

[0007] Preferably, the utility model further includes a plurality of third connection structures arranged at intervals, each of the third connection structures being arranged between two of the brackets, and including a plurality of upper support units arranged at equal heights and a plurality of lower support units arranged at equal heights, the upper support units including cross-arranged upper support round steels, and the lower support units including cross-arranged lower support round steels. The utility model installs the third connection structures at intervals between multiple brackets, further improving the lateral stiffness of the multiple brackets and improving the performance of resisting wind force.

[0008] Preferably, the two ends of the lower supporting round steel are threaded sections, and the two ends of the upper supporting round steel are threaded sections. The ends of the lower supporting round steel and the upper supporting round steel are both threaded structures, which is convenient for installation.

[0009] Preferably, the side column corresponding to the third connecting structure is connected to the parapet through a connecting rod, and each end of the connecting rod is provided with a threaded connector, one of the threaded connectors is fixed to the first connecting piece on the parapet, and the other threaded connector is fixed to the second connecting piece on the side column.

[0010] More preferably, the connecting rod is connected to the top of the parapet, and the connection angle is 45°.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] The side columns of the multi-frame bracket of the utility model are connected together by a lower connecting tie rod and an upper connecting tie rod, so that the multi-frame bracket is connected to form a whole, and the top of the multi-frame bracket is also connected by a purlin, which further improves the integrity of the multi-frame bracket. The column feet of the side columns and columns of each bracket are directly placed on the roof, and the side columns of each bracket are connected to the parapet through the first tie rod and the second tie rod, so that the load is transferred to the parapet, and the first tie rod and the second tie rod are used to resist the wind force. There is no need to configure a concrete foundation, which not only has a small impact on the roof, but also improves the utilization rate of the roof and increases the installed capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a connection diagram of a single-frame bracket and a parapet in the utility model.

[0014] Figure 2 This is the plan layout of a single bracket.

[0015] Figure 3 It is a schematic diagram of the installation of the upper support unit of the utility model.

[0016] Figure 4 It is a schematic diagram of the installation of the connecting rod of the utility model. DETAILED DESCRIPTION

[0017] The following is a detailed description of an embodiment of the utility model in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0018] It should be noted that, in the description of the present utility model, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0019] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0020] Combination Figure 1-4 It can be seen that the foundationless photovoltaic bracket for non-walkable roofs described in the utility model is a truss structure, which includes multiple brackets with the same structure, a first connection structure connecting each bracket and the parapet 1 together, and a second connection structure connecting multiple brackets together;

[0021] The first connection structure includes a first tie rod 2 and a second tie rod 3 arranged on the parapet 1. The upper part of the parapet 1 is connected with a mounting seat 4 through chemical bolts. One end of the first tie rod 2 and one end of the second tie rod 3 are both installed on the mounting seat 4. The other end of the first tie rod 2 is arranged on a third connecting piece 6 on the upper part of the side column 5. The second tie rod 3 is arranged downwardly from the parapet 1, and the lower part of the second tie rod 3 is arranged on a fourth connecting piece on the lower part of the side column 5. The utility model uses the first tie rod 2 and the second tie rod 3 to connect the two side columns 5 of each bracket with the parapet 1, and uses the parapet 1 to resist wind force and reduce the impact on the roof.

[0022] The second connection structure includes an upper connecting tie rod 8 and a lower connecting tie rod 9 for connecting the side columns 5 of multiple brackets together, that is, the upper part of each column of side columns 5 is connected by the upper connecting tie rod 8, and the lower part of each column of side columns 5 is connected by the lower connecting tie rod 9, and then the multiple brackets are connected into a whole through the upper connecting tie rod 8 and the lower connecting tie rod 9, and the upper part of the multiple brackets is also connected by a plurality of purlins 10 parallel to the upper connecting tie rod 8, so as to further ensure the integrity of the bracket; each bracket includes two side columns 5 and a plurality of columns 10 located between the side columns 5, and the side columns 5 and the columns 10 are connected together by a plurality of horizontally arranged lower chords 14, so as to ensure the integrity and rigidity of each bracket; the lower parts of the side columns 5 and the columns 10 are provided with column feet 11 with horizontal steel plates, and each column 10 and the side column 5 are directly placed on the roof through the horizontal steel plates.

[0023] Combination Figure 2-3 It can be seen that the utility model also includes a plurality of third connection structures arranged at intervals, each of which is arranged between the two frames, and includes a plurality of upper support units arranged at the same height and a plurality of lower support units arranged at the same height, the upper support unit includes cross-arranged upper support round steels 12, and the lower support unit includes cross-arranged lower support round steels. The upper support round steels 12 and the lower support round steels have the same structure, and both ends of the upper support round steels have threaded sections for easy connection. Taking the installation of the upper support round steel 12 as an example, the two ends of the upper support round steel 12 are arranged according to the threaded sections. Figure 1 The connection method shown is fixed on the angle steel of the side column 5 or the column 10, and the installation is simple and convenient. The utility model arranges multiple sets of third connection structures at intervals on multiple brackets, thereby improving the lateral rigidity of the utility model.

[0024] Combination Figure 2 It can be seen that the third connection structure is installed between two brackets, and each side column 5 of the two brackets is connected to the parapet 1 through a connecting rod 13. Figure 4 It can be seen that each end of the connecting rod 13 is provided with a threaded connector, one of which is fixed to the first connector on the parapet 1, and the other is fixed to the second connector on the side column 5. The lateral rigidity of the bracket is further ensured by the connecting rod 13. In actual installation, the connecting rod 13 is made of round steel, which is convenient for processing threads;

[0025] The connecting rod 13 is arranged horizontally, and the angle between the connecting rod 13 and the midline of the bracket is 45°, that is, the pulling angle of the connecting rod 13 is 45°. The connecting rod 13 is combined with multiple groups of support units located between the two brackets, which greatly improves the lateral stiffness of the photovoltaic bracket and further improves the stability of the photovoltaic bracket.

[0026] In actual construction, the first tie rod 2, the second tie rod 3, the upper connecting tie rod 8 and the lower connecting tie rod 9 are preferably channel steels, and the columns and side columns can be I-beams or channel steels, etc. The side columns 5 of the multi-frame bracket of the utility model are connected together by the lower connecting tie rod 9 and the upper connecting tie rod 8, so that the multi-frame brackets are connected to form a whole, and the top of the multi-frame bracket is also connected by purlins, further improving the integrity of the multi-frame bracket. The column feet 11 of the side columns 5 and the columns 10 of each bracket are directly placed on the roof, and the side columns 5 of each bracket are connected to the parapet 1 through the first tie rod 2 and the second tie rod 3, and then the load is transferred to the parapet 1. The wind force is resisted by the first tie rod 2 and the second tie rod 3, and there is no need to configure a concrete foundation, which has little impact on the roof; because the bracket is directly placed on the roof and connected to the parapet 1 through the tie rod, the utilization rate of the roof is improved.

[0027] Finally, it should be emphasized that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A foundation-free photovoltaic support for non-accessible roofs, wherein the foundation-free photovoltaic support is a truss structure, which includes multiple supports with the same structure, and is characterized by: It also includes a first connection structure connecting each bracket and the parapet together, and a second connection structure connecting multiple brackets together, the first connection structure includes a first tie rod and a second tie rod arranged on the parapet, the other end of the first tie rod is arranged at the upper part of the side column of the bracket, the second tie rod is arranged obliquely downward from the parapet, and the lower part of the second tie rod is arranged at the lower part of the side column; the second connection structure includes an upper connection tie rod and a lower connection tie rod connecting the side columns of multiple brackets together, the upper connection tie rod is located at the upper part of the side column, and the lower connection tie rod is located at the lower part of the side column; the side columns and columns of each bracket are connected together by multiple lower chords.

2. The foundation-free photovoltaic support for non-walkable roofs according to claim 1, characterized in that: It also includes a plurality of third connection structures arranged at intervals, each of the third connection structures is arranged between two of the brackets, and includes a plurality of upper support units arranged at the same height and a plurality of lower support units arranged at the same height, the upper support units include cross-arranged upper support round steels, and the lower support units include cross-arranged lower support round steels.

3. The foundation-free photovoltaic support for non-walkable roofs according to claim 2, characterized in that: The two ends of the lower supporting round steel are threaded sections, and the two ends of the upper supporting round steel are threaded sections.

4. The foundation-free photovoltaic support for non-walkable roofs according to claim 2, characterized in that: The side column corresponding to the third connection structure is connected to the parapet through a connecting rod, and each end of the connecting rod is provided with a threaded connector, one of which is fixed to the first connector on the parapet, and the other threaded connector is fixed to the second connector on the side column.

5. The foundation-free photovoltaic support for non-walkable roofs according to claim 4, characterized in that: The connecting rod is connected to the top of the parapet wall, and the connection angle is 45°.

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