A method for prestressed steel cable photovoltaic support

Abstract

The present invention provides a prestressed steel cable photovoltaic bracket method, the method comprising the following steps: step S1, when in use, install a steel plate on the roof of a building, after installation, install a plurality of support members for supporting the photovoltaic bracket at equal distances on the front and rear ends of the steel plate; step S2, one end of the support member is fixedly arranged on the steel plate, and the other end is connected to the steel cable, and anchor blocks are installed on the front and rear ends of the left and right sides of the building; step S3, one end of the steel cable is fixed to the anchor block at the front end of the left side surface, and the other end of the steel cable is connected to the support member after passing through a pulley and fixed to the anchor block at the front end of the right side surface; step S4, prestressing the steel cable, and erecting a plurality of photovoltaic brackets between the support members at the front and rear ends; the present invention has a simple structure and is easy to operate, and solves the problem that the conventional roof photovoltaic bracket is provided with concrete blocks, resulting in the need to reinforce the original structure. At the same time, the photovoltaic bracket device can solve the problem that photovoltaic construction cannot be carried out on curved roofs.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic support fixing, in particular to a prestressed steel cable photovoltaic support method. Background Art

[0002] The country is vigorously promoting the development of new energy industry. Solar energy, as a new energy with development potential, is an inexhaustible natural energy. Photovoltaic is the abbreviation of solar photovoltaic power generation system, which uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy.

[0003] In existing rooftop distributed photovoltaic power generation projects, most photovoltaic brackets are fixed by concrete blocks. This method is greatly affected by wind pressure and roof form. In areas with high wind pressure, the weight of concrete blocks is large, and the original building needs to be reinforced if the load increases too much. This method is only applicable to flat roofs. Currently, there are no photovoltaic brackets suitable for curved roofs (such as granaries) on the market. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a prestressed steel cable photovoltaic bracket method that can achieve the fixation of the photovoltaic bracket and prevent the photovoltaic bracket from being blown away by a typhoon.

[0005] The present invention is implemented by the following method: a prestressed steel cable photovoltaic support method, the method comprising the following steps:

[0006] Step S1: When in use, a steel plate is installed on the roof of a building. After installation, a plurality of support members for supporting the photovoltaic bracket are installed at equal distances on the front and rear ends of the steel plate;

[0007] Step S2, one end of the support member is fixedly disposed on the steel plate, and the other end is connected to the steel cable, and anchor blocks are installed at both the front and rear ends of the left and right sides of the building;

[0008] Step S3, fixing one end of the steel cable to the anchor block at the front end of the left side surface, and the other end of the steel cable passing through the pulley and connected to the support member and then fixed to the anchor block at the front end of the right side surface;

[0009] Step S4, prestressing the steel cable, and setting up a plurality of photovoltaic brackets between the support members at the front and rear ends, so as to press the photovoltaic brackets onto the roof.

[0010] Furthermore, the support member includes a support rod, and oblique support rods are arranged outwardly on both sides of the support rod, and the oblique support rods cooperate with the support rod to form a mountain shape.

[0011] Furthermore, support frames are provided at the front and rear ends of the left and right sides of the building, and the support frames are arranged above the anchor blocks, the pulleys are hung on the support frames, one end of the steel cable is fixed to the anchor block at the front end of the left side of the building, and the other end of the steel cable passes over the pulley and contacts the top surface of the diagonal brace and is fixed to the anchor block at the front end of the right side of the building.

[0012] Furthermore, the roof is an arched roof or a flat roof.

[0013] The beneficial effects of the present invention are as follows: the present invention does not use concrete counterweights, the load on the original structure is slightly increased, and the reinforcement cost is reduced; it can be applied to coastal areas and meet the typhoon resistance design requirements. The wind suction generated by the typhoon on the photovoltaic components can be transmitted to the anchor point through the steel cable and pulley device; there is no damage to the original roof waterproof layer, reducing the risk of water leakage in the house; the prestressed suspension cable, the support rod and the bracket base form a string structure, which can not only press the photovoltaic bracket tightly on the roof, but also prevent the photovoltaic from being blown away. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0015] Figure 2 FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.

[0016] Figure 3 FIG. 1 is a top view of the first embodiment of the present invention.

[0017] Figure 4 FIG. 2 is a schematic structural diagram of a second embodiment of the present invention.

[0018] Figure 5 FIG. 1 is a top view of a second embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] See also Figure 1 As shown, the present invention provides: a prestressed steel cable photovoltaic support method, the method comprising the following steps:

[0021] Step S1: When in use, a steel plate is installed on the roof of a building. After installation, a plurality of support members for supporting the photovoltaic bracket are installed at equal distances on the front and rear ends of the steel plate;

[0022] Step S2, one end of the support member is fixedly disposed on the steel plate, and the other end is connected to the steel cable, and anchor blocks are installed at both the front and rear ends of the left and right sides of the building;

[0023] Step S3, fixing one end of the steel cable to the anchor block at the front end of the left side surface, and the other end of the steel cable passing through the pulley and connected to the support member and then fixed to the anchor block at the front end of the right side surface;

[0024] Step S4, prestressing the steel cable, and setting up a plurality of photovoltaic brackets between the support members at the front and rear ends, so as to press the photovoltaic brackets onto the roof.

[0025] The present invention will be further described below by a specific embodiment:

[0026] A steel plate 2 is provided on the roof 1, and a plurality of supports 3 are provided at both the front and rear ends of the upper surface of the steel plate 2, and a plurality of photovoltaic brackets 4 are provided on the supports 3. Anchor blocks 5 are provided at both the front and rear ends of the left and right sides of the building, and a steel cable 6 for fixing the supports 3 is anchored on the anchor blocks 5, and tensioning members 7 are provided at both the left and right ends of the steel cable 6. The photovoltaic bracket 4 is reliably fixed on the roof 1 by applying prestress to the steel cable 6. When a typhoon comes, the photovoltaic panel and the photovoltaic bracket are pulled upward under the action of the wind. At this time, the steel cable 6 is further tensioned by the upward force transmitted from the supports 3, and is transmitted to the anchor point of the anchor block 5 through the tensioning member 7, so that the typhoon can be well resisted. The initial prestress applied to the steel cable 6 generates a downward force on the supports 3, so that the photovoltaic bracket 4 is fixed on the roof 1; when the wind suction exceeds the dead weight of the photovoltaic, the steel cable 6 is further tensioned to resist the wind suction.

[0027] The installation of the steel plate 2 is placed on the roof 1 according to the positioning, and there is no need to drill holes to fix it. The steel plate 2 relies on the prestressed steel cable 6 to achieve pressure fixation on the support 3. The steel plate 2 and the roof 1 are in contact with each other and can be temporarily fixed. It can be fixed by sticking to the roof 1 or pressing it with heavy objects, but it is not limited to this. The steel plate 2 can be set in blocks and does not need to be set along the roof 1 in an entire line.

[0028] In the present invention, a turnbuckle bolt is arranged on the prestressed steel cable 6 to adjust the size of the prestress, and the turnbuckle bolt is a prior art.

[0029] Please continue reading Figure 2 and Figure 4 As shown, in one embodiment of the present invention, the support member 3 includes a support rod 31, and both sides of the support rod 31 are inclined outwardly provided with diagonal support rods 32, and the diagonal support rods 32 cooperate with the support rods 31 to form a mountain shape. By connecting the diagonal support rods 32 with the support rods 31, the photovoltaic bracket 4 can be better supported.

[0030] Please continue reading Figure 2 and Figure 4As shown, in one embodiment of the present invention, the tensioning member 7 includes a pulley 71, and support frames 72 are provided at both ends of the left and right sides of the building, and the support frames 72 are provided above the anchor block 5, and the pulley 71 is hung on the support frame 72, and one end of the steel cable 6 is fixed on the anchor block 5 at the front end of the left side of the building, and the other end of the steel cable 6 bypasses the pulley 71 and contacts the top surface of the diagonal brace 32 and is fixed on the anchor block 5 at the front end of the right side of the building. When a typhoon comes, the photovoltaic bracket 4 will be pulled up by the wind, and at this time, the steel cable 6 is further tensioned by the upward force transmitted by the diagonal brace 32, and is transmitted to the anchor block 5 through the pulley 71, so that it can well resist the invasion of typhoons.

[0031] See also Figure 4 and Figure 5 As shown, the present invention provides a second embodiment: when the roof is a concrete flat roof, a photovoltaic bracket and a diagonal brace are installed, one end of the diagonal brace is fixed to the base of the photovoltaic bracket, and the other end is used to connect with the steel cable. The installed bracket and support rod are placed in the designated position and temporarily fixed; after the steel cable is connected to the diagonal brace, it is passed through the pulley and fixed to the anchor point of the anchor block; prestress is applied to the steel cable to press the photovoltaic bracket onto the roof.

[0032] Parapet walls 8 are arranged around the upper surface of the concrete flat roof. Through holes (not shown) are opened on the parapet walls 8 for the steel cable 6 to pass through. One end of the steel cable 6 is fixed to the anchor block 5 at the front end of the left side of the building, and the other end passes through the parapet wall via a pulley and is fixed to the anchor block 5 at the front end of the right side of the building.

[0033] See also Figure 2 and Figure 3 As shown, the present invention provides a second embodiment: when the roof is a curved roof, a strip steel plate is laid along the curved roof, the position of the steel plate is arranged according to the position of the photovoltaic bracket, and the steel plate can be adhered to the curved roof by structural adhesive; the bracket and the diagonal brace are welded (or other reliable connections are adopted) to the steel plate, and after the steel cable is connected to the diagonal brace, it is passed around the pulley and fixed to the anchor point of the anchor block; prestress is applied to the steel cable.

[0034] The present invention can solve the problem that the original structure needs to be reinforced due to the installation of concrete blocks on conventional roof photovoltaic brackets. At the same time, the photovoltaic bracket device can solve the problem that photovoltaic cannot be built on curved roofs. The device reliably fixes the photovoltaic bracket on the roof by applying prestress to the steel cable. When a typhoon comes, the photovoltaic panels and photovoltaic brackets are pulled upward by the wind. At this time, the steel cable is further tensioned by the upward force transmitted from the support rod, and the steel cable is transmitted to the anchor point through the pulley, so that it can well resist the invasion of typhoons. The device is similar to an inverted string structure. The initial prestress applied to the steel cable produces a downward force on the support rod, thereby fixing the photovoltaic bracket on the roof; when the wind suction exceeds the weight of the photovoltaic, the steel cable is further tensioned to resist the wind suction. This device makes good use of the characteristics of prestressed steel cables and can be applied to complex roof forms. No concrete blocks are set at the bottom of the photovoltaic bracket, which is directly placed on the roof. A support rod is set at the base of the bracket to connect with the steel cable. A pulley is installed on the side of the building, and a reliable steel cable anchor point is set. Prestressed steel cables are set, and the steel cables are connected to the support rods of each bracket and fixed to the anchor point on the outside of the building through the pulley. Prestress is applied to the steel cable to ensure the stability of the bracket.

[0035] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A prestressed steel cable photovoltaic support method, characterized in that: The method comprises the following steps: step S1, when in use, installing a steel plate on the roof of a building, after installation, installing a plurality of support members for supporting the photovoltaic bracket at equal distances on the front and rear ends of the steel plate; step S2, one end of the support member is fixedly arranged on the steel plate, and the other end is connected to the steel cable, and anchor blocks are installed on the front and rear ends of the left and right sides of the building; step S3, fixing one end of the steel cable on the anchor block at the front end of the left side, and the other end of the steel cable is connected to the support member after passing through the pulley and fixed on the anchor block at the front end of the right side; step S4, applying prestress to the steel cable, and setting up a plurality of photovoltaic brackets between the support members at the front and rear ends, so as to realize pressing the photovoltaic bracket on the roof; The support member comprises a support rod, and both left and right sides of the support rod are provided with oblique support rods inclined outwards, and the oblique support rods cooperate with the support rod to form a mountain shape; The left and right ends of the steel cable are provided with tensioning parts, and the tensioning parts include pulleys. Support frames are provided at the front and rear ends of the left and right sides of the building, and the support frames are arranged above the anchor blocks. The pulleys are hung on the support frames. One end of the steel cable is fixed to the anchor block at the front end of the left side of the building, and the other end of the steel cable passes over the pulley and contacts the top surface of the diagonal brace and is fixed to the anchor block at the front end of the right side of the building.

2. A prestressed steel cable photovoltaic support method according to claim 1, characterized in that: The roof is an arched roof or a flat roof.

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