Bearing structure, flexible photovoltaic tracking support and flexible photovoltaic system

Abstract

The invention relates to the technical field of photovoltaic equipment, in particular to a bearing structure, a flexible photovoltaic tracking support and a flexible photovoltaic system.The bearing structure comprises a bearing cable and a supporting beam, rotating mechanisms are fixedly connected to the two ends of the bearing cable, each rotating mechanism comprises a linear part, a chamfering part and an arc part which are symmetrically arranged, one end of each linear part intersects with the corresponding chamfering part, and the other end of each linear part intersects with the corresponding arc part; the arc part is fixedly connected to the other end of the linear part and is bent inwards, the bearing cable penetrates through the arc part and is anchored and connected to the arc part, and the chamfering part is rotationally connected to the top of the supporting beam; the bottom of the supporting beam is fixedly connected with an end stand column, the bearing cables are arranged on the top of the supporting beam in parallel, every two bearing cables form a group and are fixedly anchored on a rotating mechanism above the end stand column, and the photovoltaic module is fixedly connected to the tops of the bearing cables arranged in pairs through a clamp, so that tracking rotation of the photovoltaic module to the sun angle is achieved, and the power generation efficiency is improved. When the whole photovoltaic system bears large wind power, the rotating mechanism is rotated to the clockwise limit position or the anticlockwise limit position, so that the whole photovoltaic system can be effectively limited, and the wind resistance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic support equipment, and in particular to a bearing structure, a flexible photovoltaic tracking support and a flexible photovoltaic system. Background Art

[0002] Flexible photovoltaic bracket is a new type of photovoltaic system developed in recent years. The system has the advantages of large span, high clearance and low cost. It is widely used in complex terrain and other scenes. At present, most traditional flexible brackets rotate at fixed angles. Since they cannot track the rotation of the sun in real time, the power generation efficiency of photovoltaic modules is low. In addition, the existing flexible photovoltaic tracking bracket does not have a limiting function. When it is subjected to large wind loads, it is easy to be damaged by wind and cause structural failure. Summary of the invention

[0003] In view of the above problems existing in the prior art, a bearing structure, a flexible photovoltaic tracking bracket and a flexible photovoltaic system are now provided.

[0004] The specific technical solutions are as follows:

[0005] A bearing structure is designed, including a load-bearing cable and a support beam. Both ends of the load-bearing cable are fixedly connected with a rotating mechanism. The rotating mechanism includes a straight portion, a chamfered portion, and an arc portion that are symmetrically arranged. One end of the straight portion intersects with the chamfered portion, the arc portion is fixedly connected to the other end of the straight portion and is bent inwardly. The load-bearing cable passes through the arc portion and is anchored on the arc portion, and the chamfered portion is rotatably connected to the top of the support beam.

[0006] Preferably, a T-shaped slide groove is fixedly connected to the top of the support beam, a T-shaped slide rail is slidably connected to the T-shaped slide groove, and the T-shaped slide rail is driven by a driving mechanism to perform reciprocating linear motion on the T-shaped slide groove.

[0007] Preferably, a transmission shaft is fixedly connected to the chamfered portion, a first gear is fixedly mounted on the transmission shaft, and a spur rack portion meshingly connected to the first gear is provided on the T-shaped slide rail.

[0008] Preferably, a bearing seat is fixedly installed on the top of the T-shaped slide groove, a bearing is installed on the bearing seat, and the transmission shaft passes through the chamfered portion, the bearing, and the first gear.

[0009] Preferably, the driving mechanism is configured as one of a hydraulic cylinder, a worm gear reducer, and an electric push rod.

[0010] Preferably, a limiting portion is provided on the top of the support beam near one side of the rotating mechanism, and when the rotating mechanism rotates clockwise / counterclockwise to a limit angle, the straight portion fits with the limiting portion to prevent the rotating mechanism from continuing to rotate.

[0011] Preferably, the angle between the straight portions is set to 60°, 90° or 120°.

[0012] Preferably, a limit baffle for limiting the movement of the T-shaped slide rail is also fixedly connected to the end position of the top of the support beam.

[0013] A flexible photovoltaic tracking bracket includes the above-mentioned bearing mechanism, the bottom of the support beam is fixedly connected to an end column, the load-bearing cables are arranged in parallel on the top of the support beam, and two load-bearing cables are fixedly anchored in a rotating mechanism above the end column in a group.

[0014] Preferably, a middle column is fixedly connected to the bottom of the support beam, and the middle column is arranged between the end columns. The two load-bearing cables form a set of rotating mechanisms that pass through the top of the middle column.

[0015] A flexible photovoltaic system comprises the above-mentioned flexible photovoltaic tracking bracket and also comprises photovoltaic components, wherein the photovoltaic components are fixedly connected to the top of the load-bearing cables arranged in pairs through clamps.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] 1. The driving mechanism drives the T-type slide rail to perform linear motion. The spur rack on the T-type slide rail drives the first gear to rotate. The first gear drives the transmission shaft and the rotating mechanism to rotate synchronously, thereby driving the load-bearing cable and the photovoltaic components installed on the load-bearing cable to rotate and track the sun, thereby improving the photoelectric conversion efficiency of the photovoltaic components and thus improving the power generation efficiency.

[0018] 2. When the rotating mechanism rotates to the extreme position, the straight part fits with the limiting part on the support beam, thereby effectively preventing the rotating mechanism from driving the load-bearing cables and photovoltaic components to continue rotating beyond the extreme position. When the entire photovoltaic system is subjected to strong wind force, by rotating the rotating mechanism to the clockwise extreme position or the counterclockwise extreme position, it can effectively play a better limiting role for the entire photovoltaic system and effectively provide strong wind protection.

[0019] 3. By adjusting the angle between the straight parts, the tracking rotation range of the overall flexible photovoltaic tracking bracket can be cleverly adjusted, with low adjustment cost and adaptable to more occasions.

[0020] 4. You can also configure additional limit baffles according to the actual load conditions or wind conditions of the application scenario, and use a worm gear reducer with a self-locking function to achieve multiple limits to better protect the overall photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The embodiments of the present invention will be described more fully with reference to the attached drawings, which are provided for illustration and description only and are not intended to limit the scope of the present invention.

[0022] Figure 1A structural diagram of a flexible photovoltaic tracking bracket and a flexible photovoltaic system proposed by the present invention;

[0023] Figure 2 A schematic diagram of a bearing structure proposed by the present invention;

[0024] Figure 3 This is an enlarged schematic diagram of part A in a bearing structure proposed by the present invention;

[0025] Figure 4 A schematic diagram of another embodiment of a bearing structure provided by the present invention;

[0026] Figure 5 A schematic diagram of the structure of a rotating mechanism in a bearing structure proposed by the present invention;

[0027] Figure 6 A schematic diagram of the structure of a T-shaped slide rail in a bearing structure proposed by the present invention;

[0028] Figure 7 A schematic diagram of the structure of a support beam in a load-bearing structure proposed by the present invention;

[0029] Figure 8 This is a schematic structural diagram of a rotating mechanism in a bearing structure proposed by the present invention when a photovoltaic module is in a flat state;

[0030] Fig. 9 This is a schematic structural diagram of a rotating mechanism in a bearing structure proposed by the present invention when a photovoltaic module rotates counterclockwise to an extreme position;

[0031] Fig.10 This is a schematic structural diagram of a rotating mechanism in a bearing structure proposed by the present invention when a photovoltaic module rotates clockwise to an extreme position;

[0032] The above-mentioned figure marks indicate: 1. end column; 2. intermediate column; 3. support beam; 4. rotating mechanism; 5. load-bearing cable; 6. photovoltaic module; 7. electric control box; 8. T-shaped slide; 9. transmission mechanism; 10. transmission shaft; 11. bearing seat; 12. first gear; 13. T-shaped slide rail; 14. hydraulic cylinder; 15. straight part; 16. chamfered part; 17. arc part; 18. first mounting hole; 19. second mounting hole; 20. reinforcing rod; 21. spur rack part; 22. connecting block; 23. mounting seat; 24. worm gear reducer; 25. limit part; 26. limit baffle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] Reference Figure 2-Figure 5 A load-bearing structure is mainly composed of a support beam 3, a rotating mechanism 4, and a load-bearing cable 5, wherein the rotating mechanism 4 is rotatably arranged relative to the support beam 3, the load-bearing cable 5 passes through the rotating mechanism 4 and both ends of the load-bearing cable 5 are anchored on the rotating mechanism 4, and the load-bearing cable 5 is used to install a photovoltaic component 6 in the photovoltaic flexible bracket. When the rotating mechanism 4 rotates relative to the support beam 3, the load-bearing cable 5 and the photovoltaic component 6 installed on the top of the load-bearing cable 5 are driven to rotate, thereby realizing the tracking of the sun's angle.

[0037] Further, the rotating mechanism 4 is configured as follows Figure 5 The inverted "A" structure shown is composed of a symmetrically arranged straight portion 15, an arc portion 17, and a chamfered portion 16. The bottom of the straight portion 15 intersects with the chamfered portion 16, and the arc portion 17 is fixedly connected to the top of the straight portion 15. The arc portion 17 is bent inwardly. When the arc portion 17 is completely arranged inwardly, when the straight portion 15 rotates to overlap with the limit portion 25, it will not cause the load-bearing cable 5 to contact with the support beam 3, thereby avoiding wear of the load-bearing cable 5.

[0038] Preferably, a first mounting hole 18 for mounting the transmission shaft 10 is provided on the chamfered portion 16, a second mounting hole 19 for transmission of a load-bearing cable is provided on the arc portion 17, and a reinforcing rod 20 for structural reinforcement is fixedly connected between the straight portions 15. When the rotating mechanism 4 rotates, it uses the transmission shaft 10 as the axis to drive the load-bearing cable 5 installed on the arc portion 17 to rotate.

[0039] In some optional embodiments, a limiting portion 25 is provided at the top of the support beam 3 near the rotating mechanism 4. When the rotating mechanism 4 rotates clockwise / counterclockwise to a limit angle, the straight portion 15 fits with the limiting portion 25 to prevent the rotating mechanism 4 from continuing to rotate.

[0040] like Figure 8 , Fig. 9 and Fig.10As shown, when the photovoltaic assembly 6 is in a horizontal state, the relative positions of the rotating mechanism 4 and the supporting beam 3 are as shown in FIG. Figure 8 As shown, the straight portion 15 and the limiting portion 25 are in a separated and non-contacting state. When the rotating mechanism 4 drives the load-bearing cable 5 and the photovoltaic assembly 6 to rotate to the limit position clockwise, the relative position of the rotating mechanism 4 and the supporting beam 3 is as shown in FIG. Fig.10 As shown in FIG. 1 , at this time, the straight portion 15 on the right side is in contact with the limiting portion 25 on the top of the support beam 3, thereby preventing the rotating mechanism 4 from driving the load-bearing cable 5 and the photovoltaic assembly 6 to continue rotating beyond the limit position. When the rotating mechanism 4 drives the load-bearing cable 5 and the photovoltaic assembly 6 to rotate to the limit position counterclockwise, the relative position of the rotating mechanism 4 and the support beam 3 is as shown in FIG. Fig. 9 As shown, at this time, the straight portion 15 on the left side is in contact with the limiting portion 25 on the top of the support beam 3, thereby preventing the rotating mechanism 4 from driving the load-bearing cables 5 and the photovoltaic components 6 to continue rotating beyond the limit position. When the entire photovoltaic system is subjected to strong wind force, the rotating mechanism 4 can be rotated to the clockwise limit position or the counterclockwise limit position to effectively limit the entire photovoltaic system, thereby providing strong wind protection.

[0041] In some optional embodiments, a T-shaped slide groove 8 is fixedly connected to the top of the support beam 3, a T-shaped slideway matching the T-shaped slide rail 13 is formed inside the T-shaped slide groove 8, a T-shaped slide rail 13 is slidably connected to the T-shaped slide groove 8, and the T-shaped slide rail 13 is driven by a driving mechanism to reciprocate linearly on the T-shaped slide groove 8.

[0042] like Figure 6 As shown, further, the chamfered portion 16 is fixedly connected to a transmission shaft 10, such as by welding or key connection, a first gear 12 is fixedly mounted on the transmission shaft 10, and a spur rack portion 21 meshingly connected to the first gear 12 is provided on the T-shaped slide rail 13.

[0043] More specifically, a bearing seat 11 is fixedly installed on the top of the T-shaped slide groove 8, a bearing is installed on the bearing seat 11, and the transmission shaft 10 passes through the chamfered portion 16, the bearing, and the first gear 12. The bearing seat 11, the transmission shaft 10, the bearing and the first gear 12 constitute a transmission mechanism 9 for transmitting the power of the driving mechanism.

[0044] Optionally, the driving mechanism is configured as one of a hydraulic cylinder 14, a worm gear reducer 24, and an electric push rod.

[0045] like Figure 3As shown, when the driving mechanism is set as a hydraulic cylinder 14 or an electric push rod, the hydraulic cylinder 14 or the electric push rod is fixedly installed on one end of the top of the support beam 3, and the output end of the hydraulic cylinder 14 or the electric push rod is fixedly connected to the connecting block 22 set at the end of the T-shaped slide rail 13. The hydraulic cylinder 14 is extended and retracted to drive the T-shaped slide rail 13 to reciprocate linearly on the T-shaped slide groove 8, thereby driving the first gear 12 to rotate through the spur rack part 21 on the T-shaped slide rail 13. When the first gear 12 rotates, it drives the rotating mechanism 4 to rotate synchronously, thereby realizing the rotation of the load-bearing cable 5 and the photovoltaic component 6 to track the solar angle.

[0046] Similarly, if Figure 4 As shown, when the driving mechanism is set as a worm gear reducer 24, a second gear is fixedly installed at the output end of the worm gear reducer 24, and a spur rack portion 21 meshing with the second gear is also provided on the T-shaped slide 13. The worm gear reducer 24 is preferably fixedly connected to the support beam 3 through a mounting seat 23, and the second gear is driven to rotate by the worm gear reducer 24, thereby driving the T-shaped slide 13 to reciprocate linearly on the T-shaped slide groove 8, thereby driving the first gear 12 to rotate through the spur rack portion 21 on the T-shaped slide 13, and the first gear 12 rotates while driving the rotating mechanism 4 to rotate synchronously, thereby realizing the rotation of the load-bearing cable 5 and the photovoltaic component 6 to track the solar angle, and the self-locking function of the worm gear reducer 24 cooperates with the limiting function of the straight portion 15 and the limiting portion 25, so as to achieve a better extreme position limiting effect, and provide a greater braking force when the straight portion 15 on the rotating mechanism 4 rotates to the limiting portion 25.

[0047] In addition, those skilled in the art may also select other drive devices that cooperate with gear transmission to realize linear motion transmission as the drive mechanism according to actual needs, which will not be described in detail here.

[0048] In some optional embodiments, the angle between the straight portions 15 is set to 60°, 90° or 120°. It should be noted that since the support beam 3 is horizontally arranged, when the initial state of the rotating mechanism 4 is Figure 8 In the state shown, when the rotating mechanism 4 is limited by the limiting portion 25 on the top of the support beam 3, the angle between the straight portions 15 is defined as A°, and the maximum rotation angle is (180-A) / 2 degrees. Taking the common tracking ranges of ±60°, ±45°, and ±30° on the market as examples, the angle A between the straight portions 15 is set to 60°, 90°, and 120°, respectively.

[0049] Taking A=60° as an example, since the angle between the straight portions 15 is set to 60°, when the rotating mechanism 4 rotates clockwise or counterclockwise until the straight portion 15 coincides with the limiting portion 25 at the top of the support beam 3, its rotation tracking range is ±60°, and at the same time, further limiting the flexible photovoltaic tracking bracket at the extreme position is achieved.

[0050] In some optional embodiments, the end position of the top of the support beam 3 is also fixedly connected to a limit baffle 26 for limiting the movement of the T-shaped slide rail 13. When the T-shaped slide rail 13 moves to the extreme position, it contacts the limit baffle 26. At this time, the straight portion 15 coincides with the limit portion 25, thereby playing a double limiting role. More specifically, when the driving mechanism is set to a hydraulic cylinder 14 or an electric push rod, the limit baffle 26 is set at one end away from the driving mechanism. When the driving mechanism is set to a worm gear reducer 24, limit baffles 26 are set at both ends of the left and right ends of the support beam 3.

[0051] like Figure 1 As shown, a flexible photovoltaic tracking bracket includes the above-mentioned bearing mechanism, the bottom of the support beam 3 is fixedly connected with the end column 1, the load-bearing cables 5 are arranged in parallel at the top of the support beam 3, and the load-bearing cables 5 are fixedly anchored on the rotating mechanism 4 above the end column 1 in a group of two. The flexible photovoltaic tracking bracket with only the end column 1 is particularly suitable for scenes with smaller spans.

[0052] Preferably, an intermediate column 2 is fixedly connected to the bottom of the support beam 3, and the intermediate column 2 is arranged between the end columns 1. The two load-bearing cables 5 form a group of rotating mechanisms 4 that pass through the top of the intermediate column 2. A single load-bearing cable 5 of the flexible photovoltaic tracking bracket with the intermediate column 2 has at least 3 support points, which is particularly suitable for scenarios with larger spans.

[0053] Furthermore, when the span of the flexible photovoltaic tracking bracket is large, the following Figure 1 The multi-point drive method shown is used for synchronous driving. An electric control box 7 for controlling the corresponding drive is provided on the corresponding end column 1 or the middle column 2. The driving mechanisms on the top of the corresponding columns are synchronously driven through the FreeRTOS operating system of the prior art, so as to withstand a larger load.

[0054] A flexible photovoltaic system includes the above-mentioned flexible photovoltaic tracking bracket and a photovoltaic module 6, wherein the photovoltaic module 6 is fixedly connected to the top of a pair of load-bearing cables 5 by a clamp. The flexible photovoltaic system is also equipped with a weather station and an inclination sensor commonly used in the prior art.

[0055] When the overall flexible photovoltaic tracking bracket and the flexible photovoltaic system are in operation, the inclination sensor detects the angle of the current photovoltaic assembly 6 and transmits the signal to the electric control box 7. The electric control box 7 controls the driving mechanism to perform corresponding actions to drive the T-shaped slide rail 13 to perform linear motion. The spur rack portion 21 on the T-shaped slide rail 13 drives the first gear 12 to rotate. The first gear 12 drives the transmission shaft 10 and the rotating mechanism 4 to rotate synchronously, thereby driving the load-bearing cable 5 and the photovoltaic assembly 6 installed on the load-bearing cable 5 to rotate and track the sun, thereby improving the photoelectric conversion efficiency of the photovoltaic assembly 6, thereby improving the power generation efficiency, and when the rotating mechanism 4 rotates to the limit When the photovoltaic system is in the limit position, the straight portion 15 fits with the limiting portion 25 on the support beam 3, thereby effectively preventing the rotating mechanism 4 from driving the load-bearing cables 5 and the photovoltaic components 6 to continue rotating beyond the limit position. When the entire photovoltaic system is subjected to strong wind force, the rotating mechanism 4 can be rotated to the clockwise limit position or the counterclockwise limit position to effectively limit the entire photovoltaic system, thereby providing strong wind protection. In addition, additional limiting baffles 26 can be configured according to the actual load conditions or the wind conditions of the application scenario, and a worm gear reducer 24 with a self-locking function can be used to achieve multiple limits, thereby better protecting the entire photovoltaic system.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A load-bearing structure, comprising a load-bearing cable (5) and a support beam (3), characterized in that: The two ends of the load-bearing cable (5) are fixedly connected to a rotating mechanism (4), and the rotating mechanism (4) comprises a straight portion (15), a chamfered portion (16), and an arc portion (17) which are symmetrically arranged. One end of the straight portion (15) intersects with the chamfered portion (16), and the arc portion (17) is fixedly connected to the other end of the straight portion (15) and is bent inwardly. The load-bearing cable (5) passes through the arc portion (17) and is anchored to the arc portion (17), and the chamfered portion (16) is rotatably connected to the top of the support beam (3).

2. A bearing structure according to claim 1, characterized in that: The top of the support beam (3) is fixedly connected with a T-shaped slide groove (8), and the T-shaped slide groove (8) is slidably connected with a T-shaped slide rail (13), and the T-shaped slide rail (13) is driven by a driving mechanism to reciprocate linearly on the T-shaped slide groove (8).

3. A bearing structure according to claim 2, characterized in that: The chamfered portion (16) is fixedly connected to a transmission shaft (10), a first gear (12) is fixedly mounted on the transmission shaft (10), and a spur rack portion (21) meshingly connected to the first gear (12) is provided on the T-shaped slide rail (13).

4. A bearing structure according to claim 3, characterized in that: A bearing seat (11) is fixedly mounted on the top of the T-shaped slide groove (8), a bearing is mounted on the bearing seat (11), and the transmission shaft (10) passes through the chamfered portion (16), the bearing, and the first gear (12).

5. A bearing structure according to claim 2, characterized in that: The driving mechanism is configured as one of a hydraulic cylinder (14), a worm gear reducer (24), and an electric push rod.

6. A bearing structure according to claim 1, characterized in that: A limiting portion (25) is provided at the top of the support beam (3) near one side of the rotating mechanism (4); when the rotating mechanism (4) rotates clockwise / counterclockwise to a limit angle, the straight portion (15) fits with the limiting portion (25) to prevent the rotating mechanism (4) from continuing to rotate.

7. A bearing structure according to claim 1, characterized in that: The included angle between the straight line portions (15) is set to 60°, 90° or 120°.

8. A bearing structure according to claim 2, characterized in that: A limit baffle (26) for limiting the movement of the T-shaped slide rail (13) is also fixedly connected to the end position of the top of the support beam (3).

9. A flexible photovoltaic tracking bracket, comprising the bearing mechanism according to any one of claims 1 to 7, characterized in that: The bottom of the support beam (3) is fixedly connected to an end column (1), and the load-bearing cables (5) are arranged in parallel on the top of the support beam (3). Two load-bearing cables (5) are fixedly anchored on a rotating mechanism (4) above the end column (1) in a group.

10. The flexible photovoltaic tracking bracket according to claim 8, characterized in that: The bottom of the support beam (3) is fixedly connected to an intermediate column (2), the intermediate column (2) is arranged between the end columns (1), and the two load-bearing cables (5) form a set of rotating mechanisms (4) that pass through the top of the intermediate column (2).

11. A flexible photovoltaic system, comprising the flexible photovoltaic tracking bracket according to any one of claims 9 to 10, characterized in that: It also comprises a photovoltaic assembly (6), wherein the photovoltaic assembly (6) is fixedly connected to the top of the load-bearing cables (5) arranged in pairs through a clamp.

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