Seesaw bridge structure and flat single-axis photovoltaic power generation device using the same

Abstract

The present invention discloses a seesaw bridge structure and a flat single-axis photovoltaic power generation device employing the same, relating to the field of flat single-axis photovoltaic power stations. This structure adds a first and a second slewing beam to the conventional bridge's sleeve structure. The two slewing beams are fixed to the crossbeams on the two flat single-axis purlins and can independently swivel about their respective rotational centers. This prevents the sleeve structure from disengaging even when the two flat single-axis rotation angles differ significantly, thereby minimizing bridge failures and effectively reducing the maintenance costs of the photovoltaic power station.

Description

Technical Field

[0001] The present invention relates to the field of flat single-axis photovoltaic power stations, in particular to a seesaw bridge structure and a flat single-axis photovoltaic power generation device using the bridge structure. Background Art

[0002] Due to constraints such as land and PV module prices, PV power plants are increasingly being constructed with flat single-axis trackers. A single row of these trackers typically reaches a length of around 90 meters. To reduce PV module cleaning costs, power plants connect these trackers in long rows of 1 to 2 kilometers using bridges. This allows a single robot cleaner to clean the entire row.

[0003] Due to errors in control accuracy and installation accuracy of the flat single-axis, as well as the torsional angle error of the 90-meter-long torque tube, the maximum final angle error between the ends of the two rows of flat single-axis can reach about 12°; and in various emergencies (such as strong winds), the deviation in the rotation angle of the two sets of flat single-axis will be even greater. Conventional bridge structures will experience bridge disconnection, requiring subsequent manual reconnection and restoration of the bridge, resulting in huge labor costs.

[0004] In view of the above-mentioned technical problems of flat single-axis photovoltaic power stations, there is an urgent need to develop solutions. Summary of the Invention

[0005] The object of the present invention is to provide a seesaw bridge structure to at least to a certain extent resolve the above-mentioned defects in the related art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A seesaw bridge structure, comprising:

[0008] Casing structure;

[0009] A first rotary beam, one end of which is connected to one end of the sleeve structure via a universal joint device; and

[0010] a second rotary beam, one end of which is connected to the other end of the sleeve structure via a universal joint device;

[0011] The other end of the first rotating beam and the other end of the second rotating beam are provided with a rotating structure.

[0012] In some embodiments, the rotating structure includes a shaft or a shaft hole.

[0013] In some embodiments, the seesaw bridge structure further includes a U-shaped groove member, a notch is provided at one end of the horizontal plate portion of the U-shaped groove member, and a rotating structure is provided at the vertical plate portion of the end where the notch is located. The U-shaped groove member serves as a limiting member for limiting the relative position of the rotating beam and the horizontal beam on the flat single-axis purlin.

[0014] In some embodiments, the sleeve structure has a length limiting device, which includes a spring and a limiting rope. The spring and the limiting rope are both passed through the interior of the sleeve structure, with one end fixed to the inner tube of the sleeve structure and the other end fixed to the outer tube of the sleeve structure.

[0015] In some embodiments, the revolving beam includes angle steel, C-shaped steel, U-shaped steel, round tube, square tube or special-shaped tube.

[0016] A flat single-axis photovoltaic power generation device, wherein: the bridge between two adjacent flat single-axis includes two seesaw bridge structures as described in claim 1, the two seesaw bridge structures are symmetrically arranged about the flat single axis, and the first rotating beam and the second rotating beam of the seesaw bridge structure are correspondingly arranged on the crossbeams on the purlins of the two flat single axes, and can rotate around the rotation center on the crossbeam.

[0017] In the above-mentioned flat single-axis photovoltaic power generation device, preferably, the first rotating beam and the second rotating beam are provided with U-shaped groove members at their respective rotation centers, and the U-shaped groove members are connected to the rotation centers on the cross beams where they are located. The cross plate portion of the U-shaped groove member is provided with a notch at the end corresponding to the rotation center, so that the U-shaped groove member can rotate around the rotation center together with the rotating beam, and can limit the relative position of the rotating beam and the cross beam on the purlin of the flat single axis.

[0018] In the above-mentioned flat single-axis photovoltaic power generation device, preferably, the rotation center is located above the flat single axis.

[0019] In the above-mentioned flat single-axis photovoltaic power generation device, preferably, the rotary beam is an angle steel, the horizontal plate portion of the angle steel is in contact with the top of the beam, and the vertical plate portion of the angle steel is in contact with the outer side of the beam.

[0020] In the above-mentioned flat single-axis photovoltaic power generation device, preferably, the sleeve structure has a length limiting device, and the length limiting device includes a spring and a limiting rope. The spring and the limiting rope are both passed through the inside of the sleeve structure, one end is fixed to the inner tube of the sleeve structure, and the other end is fixed to the outer tube of the sleeve structure.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] By setting up two rotating beams, the casing structure will not be disengaged when the difference in the rotation angle of the two flat single axes is too large, thereby reducing bridge failures and effectively reducing the maintenance cost of the photovoltaic power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the seesaw bridge structure;

[0024] Figure 2 Decompose the state diagram for it;

[0025] Figure 3 is a schematic diagram of its casing structure;

[0026] Figure 4 This is the exploded state diagram of the casing structure;

[0027] Figure 5 for Figure 4 Enlarged view of middle part B;

[0028] Figure 6 is a schematic diagram of a rotary beam;

[0029] Figure 7 for Figure 6 Enlarged view of part A in the middle;

[0030] Figure 8 is a schematic diagram of a U-shaped channel;

[0031] Figure 9 A schematic diagram of an embodiment of a flat single-axis photovoltaic power generation device;

[0032] Figure 10 for Figure 9 Enlarged view of the middle C section;

[0033] Figure 11 It is a schematic diagram of another embodiment of a flat single-axis photovoltaic power generation device;

[0034] Reference numerals:

[0035] 100. Seesaw bridge structure;

[0036] 110. Casing structure; 111. Outer tube; 112. Universal joint device; 113. Limiting rope; 114. Spring; 115. Inner tube;

[0037] 120. First rotary beam;

[0038] 130, second rotating beam; 131, folded plate; 132, angle steel; 133, first transverse plate portion; 134, first axial hole; 135, first vertical plate portion;

[0039] 140, U-shaped channel; 141, second vertical plate portion; 142, second horizontal plate portion; 143, notch; 144, second axial hole;

[0040] 201. Photovoltaic module; 202. Crossbeam; 203. Purlin; 204. Rotating shaft; 205. Flat single axis. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] First embodiment: seesaw bridge structure

[0043] Reference Figure 1 and Figure 2 The seesaw bridge structure 100 includes: a sleeve structure 110, a first rotating beam 120, and a second rotating beam 130. One end of the first rotating beam 120 is connected to one end of the sleeve structure 110 through a universal joint device 112; one end of the second rotating beam 130 is connected to the other end of the sleeve structure 110 through a universal joint device 112. Figure 6 and Figure 7 The other end of the two rotating beams is provided with a first shaft hole (i.e., a rotating structure) 134. The rotating structure at the other end of the rotating beam can also be a shaft.

[0044] The seesaw bridge structure further includes a U-shaped channel member 140 . Figure 8 The specific structure of the U-shaped groove member 140 is shown in FIG. Figure 8 As shown, a notch 143 is provided at one end of the horizontal plate portion (i.e., the second horizontal plate portion 142) of the U-shaped channel member 140, and a second axial hole (i.e., a swivel structure) 144 is provided on the vertical plate portion (i.e., the second vertical plate portion 141) at the end where the notch 143 is located. The U-shaped channel member 140 serves as a stopper in this seesaw bridge structure, limiting the relative position of the swivel beam and the horizontal beam on the flat single-axis purlin. Its specific application will be described in detail in the following embodiments.

[0045] The sleeve structure 110 is used to realize the function of a bridge. Figure 3 and Figure 4 The structure of the sleeve structure 110 is shown. The sleeve structure 110 includes an inner tube 115 and an outer tube 111, which are sleeved together. When the inner tube 115 and the outer tube 111 are relatively displaced along the axial direction, the overall length of the sleeve structure 110 will change.

[0046] In addition, the sleeve structure 110 also has a length-limiting device, which includes a spring 114 and a limiting rope 113. Both the spring 114 and the limiting rope 113 are installed inside the sleeve structure, with one end fixed to the screw at the end of the outer tube 111 and the other end fixed to the screw at the end of the inner tube 115. When the inner tube 115 is pulled to the limit relative to the outer tube 111, the limiting rope 113 pulls on the inner and outer tubes, preventing further pulling, thereby better preventing the inner tube from falling out of the outer tube.

[0047] Figure 5 1 shows a structure of a universal joint device 112. The universal joint device 112 comprises a first screw rod 1121 and a second screw rod 1122. One end of the second screw rod 1122 has a hole. The first screw rod 1121 passes through the hole and is assembled with the second screw rod 1122. The second screw rod 1122 can rotate around the first screw rod 1121.

[0048] Figure 6 and Figure 7 The figure shows a structure of a rotary beam. The rotary beam includes an angle steel 132, and the angle steel 132 has a first horizontal plate portion 133 and a first vertical plate portion 135. A folding plate 131 is formed at one end of the angle steel 132 for connecting the universal joint device 112, and a first axial hole (i.e., a rotary structure) 134 is provided at the other end of the angle steel 132 on the first vertical plate portion 135. By adopting the angle steel, the rotary beam can not only fit with the top of the beam on the purlin, but also fit with the outer side of the beam to form a lateral limiting effect. It should be pointed out that the main body of the rotary beam of the present invention is not limited to being realized with angle steel, but can also be made of C-shaped steel, U-shaped steel, round tube, square tube, special-shaped tube, etc., and the present invention does not impose any restrictions on this.

[0049] Second embodiment: a flat single-axis photovoltaic power generation device

[0050] The main focus is on improving the bridge of a flat single-axis photovoltaic power generation device. The bridge is a device set between two flat single-axis and allows a cleaning robot to move from a photovoltaic module on one flat single-axis to a photovoltaic module on the other flat single-axis.

[0051] Figure 9 and Figure 10 The structure of the bridge of the flat single-axis photovoltaic power generation device is shown in FIG.

[0052] Reference Figure 9 The two photovoltaic modules 201 are respectively arranged on two flat single shafts 205 and can be driven to rotate by the flat single shafts 205 to achieve sunlight tracking.

[0053] A purlin 203 is fixed on the flat single axis 205 . The purlin 203 is substantially perpendicular to the flat single axis 205 . A crossbeam 202 is fixed on the purlin 203 . The crossbeam 202 is used to install the bridge frame. The crossbeam 202 is preferably a square tube beam.

[0054] The bridge includes two seesaw bridge structures 100 of the first embodiment, and the two seesaw bridge structures 100 are symmetrically arranged about the flat single axis 205 .

[0055] by Figure 9 Taking the seesaw bridge structure 100 at the middle right rear side as an example, the first rotary beam 120 of the seesaw bridge structure 100 is arranged on the flat single shaft 205 at the upper left side, specifically on the cross beam 202 on the purlin 203 of the flat single shaft 205. Figure 9 and Figure 10 On the beam 202, a rotating shaft (i.e., a rotation center) 204 is provided above the flat single shaft 205. The first shaft hole 134 (see FIG. 1 ) at the end of the first rotating beam 120 is provided. Figure 6 and Figure 7 ) cooperates with the rotating shaft 204 so that the first rotating beam 120 can rotate around the rotating shaft 204.

[0056] The second rotary beam 130 of the seesaw bridge structure 100 is arranged on the lower right flat single shaft 205, specifically on the cross beam 202 on the purlin 203 of the flat single shaft 205. The specific arrangement is the same as the first rotary beam 120.

[0057] Figure 9 The seesaw bridge structure 100 on the front left side of the center is arranged on two flat single shafts 205 in the same manner.

[0058] like Figure 9 In the figure, when the crossbeam 202 on the flat single shaft 205 on the lower right side is tilted upward, the second rotary beam 130 of the seesaw bridge structure 100 on the right rear side will be in contact with the tilted crossbeam 202 and tilted upward, and the first rotary beam 120 of the seesaw bridge structure 100 will also rise accordingly; when the tilted crossbeam 202 begins to descend, the first rotary beam 120 and the second rotary beam 130 of the seesaw bridge structure 100 will follow suit and descend until the crossbeams 202 on the two flat single shafts 205 are parallel, and the two seesaw bridge structures 100 are both in contact with the crossbeams 202 on the flat single shaft. When the crossbeam 202 on one flat single shaft 205 descends, one rotary beam of the seesaw bridge structure 100 will be in contact with the stationary flat single shaft, and the other rotary beam will follow suit and descend until the sleeve structure 110 (see FIG. 110 ) is parallel to the sleeve structure 110. Figure 1 )The middle limit is pulled to the limit.

[0059] It can be seen that in the above embodiment, by adding two rotating beams on the basis of the conventional sleeve structure 110, the two rotating beams form a rotation center on the square tube on the flat single-axis purlin, so that the rotating beams can rotate around the rotation center, driving the sleeve structure 110 to rotate accordingly, which ensures that the sleeve structure 110 will not be disengaged when the two flat single axes 205 are at any angle.

[0060] Further integration Figure 9 and Figure 10 A U-shaped channel 140 is sleeved on the first pivot beam 120 at its pivot center. The U-shaped channel 140 is connected to the rotation axis 204 (i.e., pivot center) on the horizontal beam 202 where it is located. A notch 143 is provided on the horizontal plate of the U-shaped channel 140 at a position corresponding to the pivot center, allowing the U-shaped channel 140 to pivot along with the first pivot beam 120 about the pivot center. During the first pivot beam 120's rotation, when the bottom of the notch 143 strikes the horizontal beam 202, the first pivot beam 120 is unable to pivot further, thereby limiting the relative position of the first pivot beam 120 and the horizontal beam 202 on the purlin.

[0061] Likewise, a U-shaped channel 140 is also provided on the second rotating beam 130 .

[0062] When the first rotating beam 120 and the second rotating beam 130 are angle steels (such as Figure 6 and Figure 7 As shown in the figure, when the horizontal plate portion of the angle steel (i.e., the first horizontal plate portion 133) is in contact with the top of the beam 202, the vertical plate portion of the angle steel (i.e., the first vertical plate portion 134) is also in contact with the outer side of the beam 202, thereby forming a lateral limit and achieving a more stable effect.

[0063] The sleeve structure 110 also has a length limiting device, which is also used to prevent the inner tube and outer tube of the sleeve structure 110 from being separated. Figure 4 The length limiting device includes a spring 114 and a limiting rope 113. The spring 114 and the limiting rope 113 are both arranged inside the sleeve structure, one end of which is fixed to the screw at the end of the outer tube 111, and the other end is fixed to the screw at the end of the inner tube 115. The limiting rope 113 is preferably a steel wire rope.

[0064] Third embodiment: Another flat single-axis photovoltaic power generation device

[0065] Figure 11 Another flat single-axis photovoltaic power generation device is shown. Figure 9 The differences of the flat single-axis photovoltaic power generation device shown are: Figure 9 The height of the photovoltaic module in the flat single axis 205 is relatively small, and it is a photovoltaic panel. Figure 11 In the illustrated embodiment, the photovoltaic assembly 201 on the flat single axis 205 is relatively tall and is composed of multiple photovoltaic panels.

[0066] It should be pointed out that, unless otherwise specified, the above-mentioned terms such as "first" and "second" are used to distinguish different devices with the same name and cannot be interpreted as having meanings such as order, priority, and importance.

[0067] The present invention has been described in detail above through specific embodiments. Such detailed description is intended only to help those skilled in the art understand the present invention and is not to be construed as limiting the scope of protection of the present invention. Any modifications, equivalent transformations, and the like made by those skilled in the art to the above-described solutions based on the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A seesaw bridge structure, applied to a flat single-axis photovoltaic power generation device, characterized in that: include: Casing structure; a first rotating beam, which is arranged on the first horizontal beam on the first flat single axis, one end of the first rotating beam is connected to one end of the sleeve structure through a universal joint device, and the other end of the first rotating beam is provided with a rotating structure that rotates with the rotation center on the first horizontal beam; and A second rotating beam is provided on the second horizontal beam on the second flat single axis, one end of the second rotating beam is connected to the other end of the sleeve structure through a universal joint device, and the other end of the second rotating beam is provided with a rotating structure to rotate with the rotation center on the second horizontal beam; The first and second rotating beams are provided with U-shaped grooves at their respective rotation centers, the U-shaped grooves being connected to the rotation centers on the cross beams where they are located, and the cross plates of the U-shaped grooves are provided with notches at the ends corresponding to the rotation centers, so that the U-shaped grooves can rotate around the rotation centers along with the rotating beams and can limit the relative positions of the rotating beams and the cross beams where they are located; When the first beam and the second beam are parallel, the first rotating beam is in contact with the first beam, and the second rotating beam is in contact with the second beam; When the second crossbeam rises, the second rotating beam rises in accordance with the second crossbeam, and the first rotating beam rises accordingly. After the second crossbeam begins to descend after rising, both the first rotating beam and the second rotating beam descend accordingly until the second crossbeam and the first crossbeam are parallel to each other. In the parallel state, when one of the first beam and the second beam descends while the other beam does not move, the slewing beam on the stationary beam remains stationary, and the slewing beam on the descending beam will follow and descend until the limit in the sleeve structure is pulled up to the limit.

2. The seesaw bridge structure according to claim 1, characterized in that: The rotary structure includes a shaft or a shaft hole.

3. The seesaw bridge structure according to claim 1, characterized in that: The sleeve structure has a length limiting device, which includes a spring and a limiting rope. The spring and the limiting rope are both passed through the sleeve structure, with one end fixed to the inner tube of the sleeve structure and the other end fixed to the outer tube of the sleeve structure.

4. The seesaw bridge structure according to claim 1, characterized in that: The rotary beam includes angle steel, C-shaped steel, U-shaped steel, round tube, square tube or special-shaped tube.

5. A flat single-axis photovoltaic power generation device, characterized by: The bridge between two adjacent flat single axes includes two seesaw bridge structures as claimed in claim 1 , and the two seesaw bridge structures are symmetrically arranged about the flat single axis.

6. The flat single-axis photovoltaic power generation device according to claim 5, characterized in that: The rotation center is located above the flat single shaft.

7. The flat single-axis photovoltaic power generation device according to claim 5, characterized in that: The slewing beam is an angle steel, the horizontal plate portion of the angle steel fits with the top of the beam, and the vertical plate portion of the angle steel fits with the outer side of the beam.

8. The flat single-axis photovoltaic power generation device according to claim 5, characterized in that: The sleeve structure has a length limiting device, which includes a spring and a limiting rope. The spring and the limiting rope are both passed through the sleeve structure, with one end fixed to the inner tube of the sleeve structure and the other end fixed to the outer tube of the sleeve structure.

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