Photovoltaic flexible prestress support structure

Abstract

The utility model relates to the technical field of photovoltaic supports, in particular to a photovoltaic flexible prestress support structure. Comprising two fixed pulleys, the fixed pulleys are rotatably connected with the mounting seats through rotating shafts, movable pulleys are arranged below the fixed pulleys, the movable pulleys are connected with the two fixed pulleys through steel cables, and the steel cables are connected with the two fixed pulleys through steel cables. And a balancing weight is hoisted on the movable pulley. According to the utility model, the mounting seat is arranged on the mounting plate, the pulley mechanism is arranged on the mounting seat, the steel cable sequentially penetrates through the fixed pulley and the movable pulley, and the balancing weight is hoisted on the movable pulley and provides prestress for the steel cable, so that the balancing weight can move upwards under the action of a wind load when the wind load is applied; therefore, the vibration frequency of the steel cable is reduced by changing the loosening mode of the steel cable, and the whole system is kept stable, safe and reliable when being subjected to wind load.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic brackets, in particular to a photovoltaic flexible prestressed bracket structure. Background Art

[0002] With the large-scale construction of photovoltaic power generation projects, in order to better utilize various complex land resources such as mountains, pools, and greenhouses, photovoltaic flexible brackets have been more widely used and developed. Compared with rigid photovoltaic brackets, photovoltaic flexible brackets have the characteristics of large span and easy installation. Therefore, compared with rigid photovoltaic brackets, flexible photovoltaic brackets have broader development prospects. Figure 1 In order to prevent the steel cables on the columns from shaking significantly, it is necessary to set pull ropes on the columns to provide prestress for the steel cables, and install photovoltaic panels on the steel cables to form a photovoltaic system. As the use time continues, the prestress will be lost to varying degrees, and the prestress will continue to change within a certain range with the change of temperature at any time. On the other hand, after being subjected to excessive external interference and wind pressure, the pull ropes cannot be adjusted and relaxed to a certain extent in time to achieve the purpose of unloading, so that the safety and reliability of the entire system cannot be maintained. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a photovoltaic flexible prestressed support structure for keeping the entire system stable, safe and reliable when subjected to wind loads.

[0004] The technical solution adopted by the utility model to solve its technical problems is a photovoltaic flexible prestressed support structure, including a pile foundation, a mounting plate is arranged above the pile foundation, two mounting seats are relatively arranged above the mounting plate, each of the mounting seats is provided with a pulley mechanism, the pulley mechanism includes two fixed pulleys relatively arranged on the mounting seats, the fixed pulleys are rotatably connected to the mounting seats through a rotating shaft, a movable pulley is arranged below the fixed pulleys, a first mounting groove is arranged circumferentially of the fixed pulley, a second mounting groove is arranged circumferentially of the movable pulley, the movable pulley is connected to the two fixed pulleys through a steel cable, the steel cable is sequentially fitted with the top of the first mounting groove and the bottom of the second mounting groove, and a counterweight block is suspended on the movable pulley.

[0005] Furthermore, the mounting seat includes two relatively arranged mounting frames, the mounting frames include two relatively arranged connecting plates and a top plate arranged above the connecting plates, the top plate is fixedly connected to the two connecting plates respectively, and the rotating shaft is arranged between the two mounting frames.

[0006] Furthermore, first bearings are provided at both ends of the rotating shaft, an outer ring of the first bearing is fixedly connected to the mounting frame, an inner ring of the first bearing is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the fixed pulley.

[0007] Furthermore, both ends of the rotating shaft are fixedly connected to the mounting frame respectively, and the fixed pulley and the rotating shaft are connected via a second bearing.

[0008] Furthermore, a plurality of support rods are obliquely arranged in the circumferential direction of the pile foundation, the lower ends of the support rods are fixedly connected to the pile foundation, and the upper ends of the support rods are fixedly connected to the mounting plate.

[0009] Furthermore, a limit frame is arranged above the fixed pulley.

[0010] Furthermore, limit plates are arranged on both sides of the movable pulley, the limit plates are rotatably connected to the movable pulley, and the bottom ends of the two limit plates are connected via a counterweight block.

[0011] Furthermore, the angle between the line between the two mounting seats and the horizontal plane is 30-60°.

[0012] Furthermore, the cross-sections of the first mounting groove and the second mounting groove are arc-shaped or V-shaped.

[0013] The beneficial effects of the utility model are as follows: a mounting seat is arranged on the mounting plate, a pulley mechanism is arranged on the mounting seat, the steel cable is passed through the fixed pulley and the movable pulley in sequence, and a counterweight block is suspended on the movable pulley, the counterweight block provides prestress for the steel cable, and when subjected to wind load, the counterweight block can move upward under the action of the wind load, thereby changing the relaxation mode of the steel cable to reduce the vibration frequency of the steel cable, thereby keeping the stability, safety and reliability of the entire system when subjected to wind load. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the prior art;

[0015] Figure 2 It is a structural schematic diagram of the utility model;

[0016] Figure 3 is along Figure 2 Sectional view along line AA;

[0017] Figure 4 is a schematic diagram of a fixed pulley;

[0018] Figure 5 It is a schematic diagram of a movable pulley.

[0019] Figure numerals: 1-pile foundation; 2-mounting plate; 3-mounting seat; 4-pulley mechanism; 5-fixed pulley; 501-first mounting groove; 6-rotating shaft; 7-movable pulley; 701-second mounting groove; 8-steel cable; 9-counterweight block; 10-mounting frame; 101-connecting plate; 102-top plate; 11-support rod; 12-limiting frame; 13-limiting plate. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] like Figure 2-Figure 5 As shown, the utility model is a photovoltaic flexible prestressed support structure, including a pile foundation 1, a mounting plate 2 is arranged above the pile foundation 1, two mounting seats 3 are relatively arranged above the mounting plate 2, each of the mounting seats 3 is provided with a pulley mechanism 4, the pulley mechanism 4 includes two fixed pulleys 5 relatively arranged on the mounting seats 3, the fixed pulley 5 is rotatably connected to the mounting seats 3 through a rotating shaft 6, a movable pulley 7 is arranged below the fixed pulley 5, a first mounting groove 501 is arranged circumferentially of the fixed pulley 5, a second mounting groove 701 is arranged circumferentially of the movable pulley 7, the movable pulley 7 is connected to the two fixed pulleys 5 through a steel cable 8, the steel cable 8 is sequentially fitted with the top of the first mounting groove 501 and the bottom of the second mounting groove 701, and a counterweight block 9 is suspended on the movable pulley 7.

[0022] The pile foundation 1 can be made of reinforced concrete, steel column or iron tower; the mounting plate 2 is long and can be connected to the pile foundation 1 by bolt connection. If the pile foundation 1 and the mounting plate 2 are both made of steel, welding connection can also be used; the mounting seat 3 is arranged at the two ends of the mounting plate 2 in a high-low arrangement; the mounting seat 3 and the mounting plate 2 can be connected by bolt connection, and each mounting seat 3 is rotatably connected to two fixed pulleys 5 through a rotating shaft 6, and the axes of the two fixed pulleys 5 are parallel and located in the same horizontal plane; the movable pulley 7 is located below the two fixed pulleys 5, and the projection of the movable pulley 7 on the horizontal plane is located between the projections of the two fixed pulleys 5 on the horizontal plane, and the steel cable 8 sequentially passes through the first mounting groove 501 of one of the fixed pulleys 5, the second mounting groove 701 of the movable pulley 7, and the first mounting groove 501 of the other fixed pulley 5, and the steel cable 8 is respectively fitted with the top of the first mounting groove 501 and the bottom of the second mounting groove 701 to form a pulley mechanism 4. The cross-sections of the first mounting groove 501 and the second mounting groove 701 are arc-shaped or V-shaped. The counterweight 9 can be a concrete block or a steel block, and is hoisted on the movable pulley 7 and connected to the rotation of the movable pulley 7. When the steel cable 8 is subjected to wind load, the counterweight 9 can move upward under the action of the wind load, thereby changing the relaxation mode of the steel cable 8 to reduce the vibration frequency of the steel cable 8, and keeping the whole system stable, safe and reliable when subjected to wind load.

[0023] For further information, see Figure 2 and Figure 3The mounting seat 3 includes two mounting frames 10 arranged opposite to each other, the mounting frames 10 include two connecting plates 101 arranged opposite to each other and a top plate 102 arranged above the connecting plates 101, the top plates 102 are respectively fixedly connected to the two connecting plates 101, and the rotating shaft 6 is arranged between the two mounting frames 10. The mounting frame 10 is an inverted triangular frame or an inverted trapezoidal frame. Taking the inverted trapezoidal frame as an example, the two connecting plates 101 serve as the side edges of the trapezoidal frame, and the top plate 102 serves as the bottom edge of the trapezoidal frame; the rotating shaft 6 connects the two top plates 102 and is located at both ends of the top plates 102, and a fixed pulley 5 is arranged on the rotating shaft 6, and the projection of the fixed pulley 5 on the horizontal plane is located outside the projection of the mounting plate 2 on the horizontal plane, so that a space is provided for the arrangement of the steel cable 8.

[0024] In order to avoid shaking between the fixed pulley 5 and the mounting seat 3, first bearings are further provided at both ends of the rotating shaft 6, the outer ring of the first bearing is fixedly connected to the mounting frame 10, the inner ring of the first bearing is fixedly connected to the rotating shaft 6, and the rotating shaft 6 is fixedly connected to the fixed pulley 5. The first bearings can be deep groove ball bearings, self-aligning ball bearings and tapered roller bearings.

[0025] Furthermore, both ends of the rotating shaft 6 are fixedly connected to the mounting frame 10, and the fixed pulley 5 and the rotating shaft 6 are connected via a second bearing. Similarly, the second bearing can be a deep groove ball bearing, a self-aligning ball bearing, or a tapered roller bearing.

[0026] In order to ensure the stability of the mounting plate 2, further, see Figure 2 The pile foundation 1 is provided with a plurality of support rods 11 at an inclined circumferential direction. The lower ends of the support rods 11 are fixedly connected to the pile foundation 1 , and the upper ends of the support rods 11 are fixedly connected to the mounting plate 2 .

[0027] In order to prevent the steel cable 8 from slipping out of the fixed pulley 5, further see Figure 2 , a limit frame 12 is arranged above the fixed pulley 5. The limit frame 12 is a U-shaped frame, and the distance from the top of the limit frame 12 to the upper end of the fixed pulley 5 is less than the diameter of the steel cable 8.

[0028] In order to prevent the steel cable 8 from slipping out of the movable pulley 7, further see Figure 2 and Figure 3 Limiting plates 13 are arranged on both sides of the movable pulley 7 , and the limiting plates 13 are rotatably connected to the movable pulley 7 , and the bottom ends of the two limiting plates 13 are connected through a counterweight block 9 .

[0029] After the steel cable 8 is tensioned, a photovoltaic panel needs to be installed on the steel cable 8. In order to allow the photovoltaic panel to better receive sunlight, further, the angle between the line between the two mounting seats 3 and the horizontal plane is 30-60°.

[0030] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A photovoltaic flexible prestressed support structure, comprising a pile foundation (1), wherein a mounting plate (2) is arranged above the pile foundation (1), characterized in that: Two mounting seats (3) are arranged opposite to each other above the mounting plate (2), and each mounting seat (3) is provided with a pulley mechanism (4). The pulley mechanism (4) comprises two fixed pulleys (5) arranged opposite to each other on the mounting seats (3), and the fixed pulleys (5) are rotationally connected to the mounting seats (3) via a rotating shaft (6). A movable pulley (7) is arranged below the fixed pulleys (5), and a first mounting groove (501) is arranged on the circumference of the fixed pulley (5), and a second mounting groove (701) is arranged on the circumference of the movable pulley (7). The movable pulley (7) is connected to the two fixed pulleys (5) via a steel cable (8), and the steel cable (8) is sequentially fitted with the top of the first mounting groove (501) and the bottom of the second mounting groove (701), and a counterweight (9) is suspended on the movable pulley (7).

2. A photovoltaic flexible prestressed support structure according to claim 1, characterized in that: The mounting seat (3) comprises two mounting frames (10) arranged opposite to each other, the mounting frames (10) comprising two connecting plates (101) arranged opposite to each other and a top plate (102) arranged above the connecting plates (101), the top plate (102) being fixedly connected to the two connecting plates (101) respectively, and the rotating shaft (6) being arranged between the two mounting frames (10).

3. A photovoltaic flexible prestressed support structure as claimed in claim 2, characterized in that: First bearings are provided at both ends of the rotating shaft (6); the outer ring of the first bearing is fixedly connected to the mounting frame (10); the inner ring of the first bearing is fixedly connected to the rotating shaft (6); and the rotating shaft (6) is fixedly connected to the fixed pulley (5).

4. A photovoltaic flexible prestressed support structure as claimed in claim 2, characterized in that: The two ends of the rotating shaft (6) are respectively fixedly connected to the mounting frame (10), and the fixed pulley (5) and the rotating shaft (6) are connected via a second bearing.

5. A photovoltaic flexible prestressed support structure according to claim 1, characterized in that: The pile foundation (1) is provided with a plurality of support rods (11) in an inclined manner in the circumferential direction, the lower ends of the support rods (11) are fixedly connected to the pile foundation (1), and the upper ends of the support rods (11) are fixedly connected to the mounting plate (2).

6. A photovoltaic flexible prestressed support structure according to claim 1, characterized in that: A limit frame (12) is arranged above the fixed pulley (5).

7. A photovoltaic flexible prestressed support structure as claimed in claim 6, characterized in that: Limiting plates (13) are arranged on both sides of the movable pulley (7), the limiting plates (13) are rotatably connected to the movable pulley (7), and the bottom ends of the two limiting plates (13) are connected via a counterweight block (9).

8. A photovoltaic flexible prestressed support structure according to claim 1, characterized in that: The angle between the line connecting the two mounting seats (3) and the horizontal plane is 30-60°.

9. A photovoltaic flexible prestressed support structure according to claim 1, characterized in that: The cross-sections of the first mounting groove (501) and the second mounting groove (701) are arc-shaped or V-shaped.

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