Driven device and photovoltaic support system

Abstract

The embodiment of the utility model provides a driven device and a photovoltaic support system, and relates to the technical field of photovoltaic power generation. The driven device comprises a support, a first roller and an arc bearing, the first roller is rotatably installed on the support, the first roller is provided with a circumferential outer wall, the circumferential outer wall is formed by a first arc surrounding the rotating axis of the first roller, the arc bearing is used for supporting a main beam of the photovoltaic support, and the arc bearing is provided with an arc-shaped outer wall. The circumferential outer wall is used for being attached to and abutting against the arc-shaped outer wall of the arc bearing so that the arc bearing can rotate relative to the support, due to the fact that the circumferential outer wall is formed in the mode that the first arc line surrounds the rotating axis of the first roller, the circumferential outer wall can have a larger contact area with the arc-shaped outer wall, and the stress of the circumferential wall of the first roller per unit area is smaller; abrasion of the arc bearing can be reduced, and the service life of the photovoltaic support system is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, and more specifically, to a driven device and a photovoltaic bracket system. Background Art

[0002] A flat single-axis photovoltaic bracket is a photovoltaic bracket system with a single horizontal rotation axis. Different from the conventional fixed brackets, the flat single-axis photovoltaic bracket can automatically adjust the angle of the photovoltaic module according to the movement track of the sun, so as to capture sunlight to the greatest extent. This intelligent design has significantly improved the power generation efficiency of the flat single-axis photovoltaic bracket.

[0003] In the prior art, a photovoltaic bracket system consists of a driving device and a driven device. A roller is arranged at the supporting position of the existing driven device, and the outer circumferential wall of the roller is used to contact the arc bearing above the roller. The outer circumferential wall of this roller is formed by a straight line surrounding the rotation axis of the roller. The contact area between the surface of the roller and the arc bearing is not much, the force per unit area of the roller is large, and at the same time, the wear of the arc bearing is also very serious, which affects the service life of the photovoltaic bracket system. Summary of the Utility Model

[0004] The utility model provides a driven device and a photovoltaic bracket system, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic bracket system.

[0005] The embodiments of the utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a driven device applicable to a photovoltaic bracket. The driven device includes:

[0007] A support;

[0008] A first roller rotatably mounted on the support. The first roller has an outer circumferential wall formed by a first arc surrounding the rotation axis of the first roller; and

[0009] An arc bearing for supporting the main beam of the photovoltaic bracket. The arc bearing has an arc-shaped outer wall, and the outer circumferential wall is used to fit and abut against the arc-shaped outer wall of the arc bearing so that the arc bearing rotates relative to the support.

[0010] In an optional embodiment, the arc-shaped outer wall is formed by a second arc surrounding the rotation axis of the arc bearing.

[0011] In an optional embodiment, the first arc and the second arc are concentric.

[0012] In an alternative embodiment, the distance from the middle of the first arc to the rotation axis of the first roller is a first distance, the distance from one end of the first arc to the rotation axis of the first roller is a second distance, and the distance from the other end of the first arc to the rotation axis of the first roller is a third distance;

[0013] Wherein, both the second distance and the third distance are less than the first distance.

[0014] In an alternative embodiment, the second distance is equal to the third distance.

[0015] In an alternative embodiment, the number of the first rollers is multiple, and the multiple first rollers are spaced apart.

[0016] In an alternative embodiment, the first roller is provided with a circular through hole, the axis of the circular through hole is collinear with the rotation axis of the first roller, the driven device further includes a connecting shaft, the connecting shaft is disposed through the circular through hole, and the connecting shaft is connected to the support.

[0017] In an alternative embodiment, the arc bearing further has an arc-shaped inner wall opposite to the arc-shaped outer wall, the driven device further includes a second roller, and the second roller is used for rolling and abutting against the arc-shaped inner wall.

[0018] In an alternative embodiment, the arc bearing includes a support plate and an arc-shaped plate, the arc-shaped plate has the arc-shaped outer wall, the support plate is connected to the arc-shaped inner wall, and the support plate is used for supporting the main beam of the photovoltaic tracking bracket.

[0019] In a second aspect, the present invention provides a photovoltaic bracket system, including a main beam and a plurality of the driven devices according to any one of the foregoing embodiments, and the plurality of driven devices are installed on the main beam.

[0020] The beneficial effects of the driven device and the photovoltaic bracket system of the embodiments of the present invention include, for example:

[0021] The present invention provides a driven device applicable to a photovoltaic bracket. The driven device includes a support, a first roller, and an arc bearing. The first roller is rotatably installed on the support. The first roller has a circumferential outer wall, and the circumferential outer wall is formed by a first arc surrounding the rotation axis of the first roller. The arc bearing is used for supporting the main beam of the photovoltaic bracket. The arc bearing has an arc-shaped outer wall. The circumferential outer wall is used for attaching to and abutting against the arc-shaped outer wall of the arc bearing so that the arc bearing rotates relative to the support. Since the circumferential outer wall is formed by a first arc surrounding the rotation axis of the first roller, the circumferential outer wall can have a larger contact area with the arc-shaped outer wall, and the force per unit area on the circumferential wall of the first roller is smaller, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic bracket system.

[0022] The present utility model provides a photovoltaic support system. The photovoltaic support includes a main beam and a plurality of the above-mentioned driven devices. The plurality of driven devices are installed on the main beam, and the photovoltaic support has all the functions of the above-mentioned driven devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a partial cross-sectional view of the driven device provided in the embodiment of the present utility model;

[0025] Figure 2 It is a schematic diagram of the first perspective of the driven device provided in the embodiment of the present utility model;

[0026] Figure 3 It is a schematic diagram of the second perspective of the driven device provided in the embodiment of the present utility model;

[0027] Figure 4 It is a schematic diagram of the first roller provided in the embodiment of the present utility model;

[0028] Figure 5 It is a schematic diagram of the arc-shaped plate provided in the embodiment of the present utility model;

[0029] Figure 6 It is a schematic diagram of the support provided in the embodiment of the present utility model;

[0030] Figure 7 It is a schematic diagram of the third perspective of the driven device provided in the embodiment of the present utility model.

[0031] Reference numerals: 100 - support; 200 - first roller; 201 - circumferential outer wall; 2011 - first arc; 202 - circular through hole; 300 - arc bearing; 310 - support plate; 320 - arc-shaped plate; 301 - arc-shaped outer wall; 302 - arc-shaped inner wall; 3011 - second arc; 400 - connecting shaft; 500 - second roller; 10 - roller rotation axis center line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein generally may be arranged and designed in a variety of different configurations.

[0033] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0034] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0036] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] It should be noted that the features in the embodiments of the present utility model may be combined with each other without conflict.

[0038] Photovoltaic power generation is a green energy technology that converts solar radiation into direct current. With the improvement of environmental awareness and the transformation of the energy structure, photovoltaic power generation has been more and more widely applied and has become an important renewable energy source. In the application of photovoltaic power generation, the photovoltaic support is an important part of the photovoltaic system, and its main function is to support and fix the photovoltaic modules to ensure the stability and functionality of the photovoltaic system.

[0039] As mentioned in the background art, a flat single-axis photovoltaic support is a photovoltaic support system with a single horizontal rotation axis. Different from the conventional fixed supports, the flat single-axis photovoltaic support can automatically adjust the angle of the photovoltaic modules according to the movement trajectory of the sun, thereby maximizing the capture of sunlight. This intelligent design has significantly improved the power generation efficiency of the flat single-axis photovoltaic support.

[0040] The photovoltaic support system in the prior art consists of a driving device and a driven device. A roller is provided at the support position of the existing driven device, and the outer circumferential wall of the roller is used to contact the arc bearing above the roller. The outer circumferential wall of this roller is formed by a straight line surrounding the rotation axis of the roller. The contact area between the surface of the roller and the arc bearing is not much, and the force per unit area of the roller is large. At the same time, in this case, during the rotation of the arc bearing, the wear of the arc bearing will also be very serious, affecting the service life of the photovoltaic support system.

[0041] In view of this, please refer to Figures 1 - 7 , the driven device and the photovoltaic support system provided in the embodiments of the present invention can solve this problem, and will be described in detail below.

[0042] Please refer to Figures 1 - 3 , an embodiment of the present invention provides a photovoltaic support system. The photovoltaic support includes a main beam and a plurality of driven devices. The plurality of driven devices are installed on the main beam (not shown in the figure), and the plurality of driven devices are installed at intervals along the length direction of the main beam. This photovoltaic support system has a better service life compared to the existing photovoltaic support system.

[0043] The photovoltaic support system here can be understood as a flat single-axis tracking support.

[0044] Specifically, the driven device is applicable to the photovoltaic support, and the driven device can be understood as a support structure for supporting the main beam.

[0045] The driven device includes a support 100 (as shown in Figure 6 ), a first roller 200, and an arc bearing 300. The support 100 is used to connect the column (not shown in the figure). The first roller 200 is rotatably installed on the support 100. The first roller 200 has an outer circumferential wall 201, and the outer circumferential wall 201 is formed by a first arc 2011 surrounding the rotation axis of the first roller 200 (which can be understood as the roller rotation axis 10 in Figure 1 ). The arc bearing 300 is used to support the main beam of the photovoltaic support. The arc bearing 300 has an arc-shaped outer wall 301. The outer circumferential wall 201 is used to fit and abut against the arc-shaped outer wall 301 of the arc bearing 300, so that the arc bearing 300 rotates relative to the support 100.

[0046] Since the circumferential outer wall 201 is formed by the first arc 2011 surrounding the rotation axis of the first roller 200, the circumferential outer wall 201 can have a larger contact area with the arc-shaped outer wall 301. The force per unit area on the circumferential wall of the first roller 200 is smaller, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic support system.

[0047] It is easy to understand that when the distance between the two end faces of the first roller 200 is the same as that of the existing roller, the circumferential outer wall 201 of the first roller 200 is formed by the first arc 2011 surrounding the rotation axis of the first roller 200. The area of the circumferential outer wall 201 of the first roller 200 is larger than the circumferential wall area of the existing roller. Therefore, the circumferential outer wall 201 of the first roller 200 can have a larger contact area with the arc-shaped outer wall 301. The force per unit area on the circumferential wall of the first roller 200 is smaller. For the arc bearing 300, the force on the contact area between the arc bearing 300 and the first roller 200 is also smaller, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic support system.

[0048] Specifically, the arc bearing 300 includes a support plate 310 and an arc plate 320 (as Figure 5 shown), the arc plate 320 has an arc-shaped outer wall 301, the arc bearing 300 also has an arc-shaped inner wall 302 opposite to the arc-shaped outer wall 301, the driven device further includes a second roller 500, the second roller 500 is used for rolling and abutting against the arc-shaped inner wall 302, and the second roller 500 is rotatably installed on the support 100. Specifically, by passing a connecting pin through the second roller 500, the pin is installed on the support to realize the relative rotation of the second roller 500 with respect to the arc-shaped inner wall 302.

[0049] In some embodiments, the driven device further includes a column (not shown in the figure), and the column is connected to the support 100.

[0050] Among them, the support plate 310 is connected to the arc-shaped inner wall, and the support plate 310 is used to support the main beam of the photovoltaic tracking support.

[0051] Please continue to refer to Figure 1 , the arc-shaped outer wall 301 is formed by the second arc 3011 surrounding the rotation axis of the arc bearing 300 (here the rotation axis can be understood as a line parallel to the rotation axis 10 of the roller).

[0052] To facilitate the fitting of the arc-shaped outer wall 301 and the circumferential outer wall 201 of the first roller 200, in this embodiment, the first arc 2011 and the second arc 3011 are concentric. In addition, as Figure 1As shown in the figure, the distance from the middle of the first arc 2011 to the rotation axis line of the first roller 200 is the first distance, the distance from one end of the first arc 2011 to the rotation axis line of the first roller 200 is the second distance, and the distance from the other end of the first arc 2011 to the rotation axis line of the first roller 200 is the third distance. Among them, the second distance is equal to the third distance, and both the second distance and the third distance are less than the first distance.

[0053] That is to say, the arc-shaped outer wall 301 is concave towards the rotation axis line of the arc bearing 300.

[0054] In addition, it should be noted that in this embodiment, the radius of the first arc 2011 is the distance from the contact position of the first roller 200 and the arc-shaped plate 320 to the rotation axis line of the arc-shaped plate 320.

[0055] In order to improve the support effect on the arc-shaped plate 320 of the arc bearing, that is, to reduce the pressure on a single first roller 200, the number of the first rollers 200 is multiple, and the multiple first rollers 200 are distributed at intervals. Here, the multiple can be understood as at least two. In this embodiment, the number of the first rollers 200 is two, and the two first rollers 200 are distributed at intervals.

[0056] In addition, in this embodiment, the number of the second rollers 500 is four. At the support position of each first roller 200 on the arc-shaped plate 320, two second rollers 500 are distributed. Each second roller 500 is penetrated by a connecting pin shaft. The pin shaft penetrates through the second roller 500 and is installed on the bracket to realize the relative rotation of the second roller 500 relative to the arc-shaped inner wall 302.

[0057] For the convenience of the first rolling path on the roller of the support 100, please refer to Figure 4 , the first roller 200 is provided with a circular through hole 202, and the axis line of the circular through hole 202 is collinear with the rotation axis line of the first roller 200. The driven device further includes a connecting shaft 400 (a connecting pin shaft can be selected), and the connecting shaft 400 penetrates through the circular through hole 202, and the connecting shaft 400 is connected to the support 100.

[0058] Specifically, each first roller 200 is penetrated by a connecting shaft 400, and each connecting shaft 400 is connected to the support 100.

[0059] When the driving device is started, it will drive the main beam to rotate synchronously, and the arc bearing will rotate relative to the first roller 200.

[0060] In summary, the driven device includes a support 100, a first roller 200, and an arc bearing 300. The first roller 200 is rotatably installed on the support 100. The first roller 200 has a circumferential outer wall 201, and the circumferential outer wall 201 is formed by a first arc 2011 surrounding the rotation axis of the first roller 200. The arc bearing 300 is used to support the main beam of the photovoltaic support. The arc bearing 300 has an arc-shaped outer wall 301. The circumferential outer wall 201 is used to fit and abut against the arc-shaped outer wall 301 of the arc bearing 300, so that the arc bearing 300 rotates relative to the support 100. Since the circumferential outer wall 201 is formed by the first arc 2011 surrounding the rotation axis of the first roller 200, the circumferential outer wall 201 can have a larger contact area with the arc-shaped outer wall 301. The force per unit area on the circumferential wall of the first roller 200 is smaller, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic support system.

[0061] In addition, the first roller 200 of the driven device and the arc bearing 300 can be in close contact, which can always ensure sufficient contact, uniform force, and smooth rotation between the first roller 200 and the arc bearing 300.

[0062] In addition, please refer to Figure 2 and Figure 7 , in the case where the driven device deflects relative to the column or the column is installed on a slope, for example, here the support 100, the first roller 200, and the arc bearing 300 all deflect to the left, and when the distance between the two end faces of the first roller 200 is the same as the distance between the two end faces of the existing roller, there will be a certain gap between the existing roller and the existing arc bearing 300, and the contact area between the two becomes smaller.

[0063] Although in some cases, there will be a gap between the first roller 200 in this application and the arc-shaped plate 320 provided in this embodiment, in the same situation (that is, when the distance between the two end faces of the first roller 200 is the same as the distance between the two end faces of the existing roller), the area of the circumferential outer wall 201 of the first roller 200 is larger than the circumferential wall area of the existing roller. Since the circumferential outer wall 201 of the first roller 200 can have a larger contact area with the arc-shaped outer wall 301, the force per unit area on the circumferential wall of the first roller 200 is still smaller. For the arc bearing 300, the force on the contact area between the arc bearing 300 and the first roller 200 is also smaller, which can reduce the wear of the arc bearing and avoid affecting the service life of the photovoltaic support system, and ensure smooth rotation of the photovoltaic support. The photovoltaic support system with the driven device in this embodiment is not only applicable to flat installation (such as Figure 2 state), but also applicable to slope installation (such as Figure 7 state).

[0064] The driven device has a simple structure, is easy to manufacture and install, has low cost, and high reliability.

[0065] The driven device is also more evenly stressed, enabling the photovoltaic support system to be applicable not only to flat installation but also to slope installation. The main beam of the entire photovoltaic support system rotates more smoothly, avoiding affecting the service life of the photovoltaic support system.

[0066] The photovoltaic support includes a main beam and a plurality of the above-mentioned driven devices. The plurality of driven devices are installed on the main beam, and the photovoltaic support has all the functions of the above-mentioned driven devices.

[0067] As mentioned above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A driven device, applicable to a photovoltaic support, characterized in that, The driven device includes: a support (100); a first roller (200) rotatably mounted on the support (100), the first roller (200) having a circumferential outer wall (201) formed by a first arc (2011) surrounding the rotation axis of the first roller (200); and an arc bearing (300) for supporting the main beam of the photovoltaic support, the arc bearing (300) having an arc-shaped outer wall (301), and the circumferential outer wall (201) being adapted to abut and contact the arc-shaped outer wall (301) of the arc bearing (300) so that the arc bearing (300) rotates relative to the support (100).

2. The driven device according to claim 1, characterized in that, The arc-shaped outer wall (301) is formed by a second arc (3011) surrounding the rotation axis of the arc bearing (300).

3. The driven device according to claim 2, wherein The first arc (2011) and the second arc (3011) are concentric.

4. The driven device according to claim 1, characterized in that, The distance from the middle of the first arc (2011) to the rotation axis of the first roller (200) is a first distance, the distance from one end of the first arc (2011) to the rotation axis of the first roller (200) is a second distance, and the distance from the other end of the first arc (2011) to the rotation axis of the first roller (200) is a third distance; wherein, both the second distance and the third distance are less than the first distance.

5. The driven device according to claim 4, characterized in that, The second distance is equal to the third distance.

6. The driven device according to claim 1, wherein The number of the first rollers (200) is multiple, and the multiple first rollers (200) are distributed at intervals.

7. The driven device according to claim 1, characterized in that The first roller (200) is provided with a circular through hole (202), the axis of the circular through hole (202) is collinear with the rotation axis of the first roller (200), and the driven device further includes a connecting shaft (400) passing through the circular through hole (202), and the connecting shaft (400) is connected to the support (100).

8. The driven device according to claim 1, characterized in that, The arc bearing (300) further has an arc-shaped inner wall (302) opposite to the arc-shaped outer wall (301), and the driven device further includes a second roller (500) rotatably mounted on the support (100), and the second roller (500) is adapted to roll and abut against the arc-shaped inner wall (302).

9. The driven device according to claim 8, wherein, The arc bearing (300) includes a support plate (310) and an arc-shaped plate (320), the arc-shaped plate (320) has the arc-shaped outer wall (301), the support plate (310) is connected to the arc-shaped inner wall (302), and the support plate (310) is used to support the main beam of the photovoltaic tracking support.

10. A photovoltaic support system, characterized in that, including a main beam and multiple driven devices according to any one of claims 1-9, and the multiple driven devices are mounted on the main beam.

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