Supporting structure and photovoltaic tracking mounting

Abstract

Embodiments of the present disclosure relate to the technical field of photovoltaic power generation, and provide a supporting structure and a photovoltaic tracking mounting. The supporting structure comprises a bearing housing, an arc bearing, a first roller, and a second roller, wherein the first roller is rotatably connected to the bearing housing, the second roller is rotatably connected to the bearing housing, the arc bearing is configured to support a main beam of a photovoltaic tracking mounting, the first roller is configured to roll and abut against the arc-shaped outer side wall of the arc bearing, and the second roller is configured to roll and abut against the arc-shaped inner side wall of the arc bearing, so that the arc bearing rotates relative to the bearing housing. The supporting structure can maintain normal movement of the main beam along a set movement trajectory, ensuring that the photovoltaic tracking mounting operates normally to track the change of the solar azimuth angle.

Description

Support structure and photovoltaic tracking bracket

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 2023111561598, filed with the Patent Office of China on September 7, 2023, entitled “A Support Structure and Photovoltaic Tracking Bracket,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of photovoltaic power generation technology, and in particular to a support structure and a photovoltaic tracking bracket. Background Art

[0004] In photovoltaic power generation systems, flat single-axis trackers are one of the most commonly used photovoltaic array mounts. Because they track the sun's azimuth during the day, photovoltaic panels using flat single-axis trackers can generate 15%-25% more annual power than panels using optimal fixed-tilt mounts. Because these flat single-axis trackers rotate around their axis, they are typically supported by a central beam. The panels are mounted above the beam and rotate about its center.

[0005] However, with this structural form, when faced with strong winds, the rotating part of the tracking bracket will have an upward or downward deflection tendency, which makes it impossible to maintain the normal movement of the main beam on the set motion trajectory, affecting the operation of the tracking bracket to track changes in the solar azimuth angle.

[0006] Summary of the Invention

[0007] The present disclosure provides a support structure and a photovoltaic tracking bracket, which can maintain the normal movement of the main beam on a set motion trajectory, ensuring that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle.

[0008] The embodiments of the present disclosure may be implemented as follows:

[0009] In a first aspect, the present disclosure provides a support structure comprising:

[0010] bearing housing;

[0011] a first roller, the first roller being rotatably connected to the bearing seat;

[0012] a second roller rotatably connected to the bearing seat; and

[0013] An arc bearing is configured to support the main beam of a photovoltaic tracking bracket, the first roller is configured to roll against the arc-shaped outer wall of the arc bearing, and the second roller is configured to roll against the arc-shaped inner wall of the arc bearing to enable the arc bearing to rotate relative to the bearing seat.

[0014] In an optional embodiment, the arc bearing includes a support plate and an arc plate, the arc plate has the arc inner wall and the arc outer wall, the support plate is connected to the arc inner wall, and the support plate is configured to support the main beam of the photovoltaic tracking bracket.

[0015] In an optional embodiment, the support plate is provided with a limiting groove, and the limiting groove is configured to support the main beam.

[0016] In an optional embodiment, the arc plate is in the shape of a semicircular arc.

[0017] In an optional embodiment, the support plate is provided with a limiting groove, and the limiting groove is configured to support the main beam.

[0018] In an optional embodiment, a portion of the wall surface of the arc-shaped outer side wall is recessed toward the arc-shaped inner side wall to form a roller guide groove, and the first roller is configured to roll against the roller guide groove.

[0019] In an optional embodiment, the roller guide groove extends along the periphery of the arc-shaped plate.

[0020] In an optional embodiment, the rotation axis of the first roller is parallel to the rotation axis of the second roller.

[0021] In an optional embodiment, the rotation axis of the first roller is parallel to the rotation axis of the arc bearing.

[0022] In an optional embodiment, there are multiple roller guide grooves and multiple first rollers, the multiple roller guide grooves are distributed in parallel, and at least one first roller is configured to roll against one roller guide groove.

[0023] In an optional embodiment, the bearing seat includes a connecting plate, a first plate body, a second plate body and a through-shaft, the first plate body and the second plate body are spaced apart on the connecting plate, and the through-shaft passes through both the first plate body and the second plate body;

[0024] Wherein, a plurality of the first rollers rotate about the same through shaft.

[0025] In an optional embodiment, the bearing seat further includes a cantilever shaft, the cantilever shaft is connected to the first plate body, and the second roller is rotatably connected to the cantilever shaft.

[0026] In an optional embodiment, the support structure further includes a limit member connected to the arc bearing, and the limit member is configured so that the arc bearing abuts the second roller when it rotates to an extreme position.

[0027] In an optional embodiment, the rotation axis of the first roller is parallel to the rotation axis of the second roller.

[0028] In an optional embodiment, the support structure includes multiple roller groups, and the multiple roller groups are respectively located at multiple support positions spaced apart on the arc bearing;

[0029] There are multiple first rollers and multiple second rollers, and the first rollers and the second rollers located at the same supporting position of the arc bearing form a roller group.

[0030] In an optional embodiment, the support structure includes two groups of rollers.

[0031] In an optional embodiment, each group of the roller groups includes two first rollers, and the two first rollers rotate on the same axis. Each group of the roller groups also includes two second rollers, and the two second rollers are respectively located on opposite sides of the support plate.

[0032] In an optional embodiment, the number of the roller guide groove is one, and a group of the roller groups includes only one first roller and two second rollers.

[0033] In an optional embodiment, the length of the support plate in the direction of the arc bearing rotation axis is smaller than the length of the arc plate in the direction of the arc bearing rotation axis, and the edges of the arc plate protrude to both sides of the support plate.

[0034] In a second aspect, the present disclosure provides a photovoltaic tracking bracket, comprising a main beam and the support structure described in any one of the aforementioned embodiments, wherein the arc bearings of the plurality of support structures are installed at intervals along the length direction of the main beam.

[0035] In an optional embodiment, the center of the arc bearing is set between the upper end surface or the highest point of the main beam and the center of the main beam, and the center of the arc bearing is located on the center line of the main beam in the vertical direction.

[0036] In an optional embodiment, the photovoltaic tracking bracket is a flat single-axis tracking bracket.

[0037] The beneficial effects of the support structure and photovoltaic tracking bracket of the embodiments of the present disclosure include, for example:

[0038] The present invention provides a support structure, which includes a bearing seat, an arc bearing, a first roller and a second roller. The first roller is rotatably connected to the bearing seat; the second roller is rotatably connected to the bearing seat; the arc bearing is configured to support the main beam of the photovoltaic tracking bracket, the first roller is configured to roll against the arc-shaped outer wall of the arc bearing, and the second roller is configured to roll against the arc-shaped inner wall of the arc bearing, so that the arc bearing rotates relative to the bearing seat. Since the first roller and the second roller can both limit the movement of the bearing seat, usually under the action of gravity, the photovoltaic tracking bracket The bracket is supported on the first roller at the arc-shaped outer wall of the bearing seat through an arc bearing. When strong winds come, the rotating part of the photovoltaic tracking bracket will have an upward or downward deflection tendency. At this time, the arc bearing will be restricted by the abutment of the second roller at the arc-shaped inner wall to avoid upward deflection, or the arc bearing will be restricted by the abutment of the first roller at the arc-shaped outer wall to avoid downward deflection, so that it always remains on the set motion trajectory, and thus can maintain the normal movement of the main beam on the set motion trajectory, ensuring that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle.

[0039] The present disclosure provides a photovoltaic tracking bracket, which includes a main beam and the above-mentioned support structure. Arc bearings of multiple support structures are installed at intervals along the length direction of the main beam. The photovoltaic tracking bracket has all the functions of the above-mentioned support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0041] FIG1 is a schematic diagram of a photovoltaic tracking bracket provided in an embodiment of the present disclosure;

[0042] FIG2 is a side view of a support structure provided in an embodiment of the present disclosure;

[0043] FIG3 is a schematic diagram of a curved plate provided in an embodiment of the present disclosure;

[0044] FIG4 is a schematic diagram of a support structure provided in another embodiment of the present disclosure;

[0045] FIG5 is a schematic diagram of a first roller provided in an embodiment of the present disclosure;

[0046] FIG6 is a schematic diagram of a pressing plate provided in an embodiment of the present disclosure;

[0047] FIG7 is a schematic diagram of a bearing seat provided in an embodiment of the present disclosure;

[0048] FIG8 is a schematic diagram of a bearing seat provided in an embodiment of the present disclosure with the through-shaft and the cantilever shaft removed;

[0049] FIG9 is a schematic diagram of a cantilever shaft provided in an embodiment of the present disclosure;

[0050] FIG10 is a schematic diagram of a through-shaft provided in an embodiment of the present disclosure;

[0051] FIG11 is a schematic diagram of a main beam with a rectangular cross section provided in an embodiment of the present disclosure;

[0052] FIG12 is a schematic diagram of a main beam with a circular cross section provided in another embodiment of the present disclosure;

[0053] FIG13 is a schematic diagram showing a hexagonal cross-section of a main beam provided in other embodiments of the present disclosure.

[0054] Icons: 1000-support structure; 100-bearing seat; 110-connecting plate; 120-first plate body; 130-second plate body; 140-through shaft; 150-cantilever shaft; 200-arc bearing; 201-center of circle; 210-support plate; 211-limiting groove; 220-arc plate; 221-arc outer wall; 222-arc inner wall; 223-roller guide groove; 300-first roller; 400-second roller; 500-limiting member; 600-pressure plate; 2000-main beam; 2001-upper end face; 2002-center; 2003-highest point; 2010-center line. DETAILED DESCRIPTION

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0056] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort are within the scope of protection of the present disclosure.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0058] In the description of the present disclosure, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present disclosure.

[0059] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0060] It should be noted that, in the absence of conflict, the features in the embodiments of the present disclosure may be combined with each other.

[0061] As mentioned in the background, flat single-axis trackers are the most commonly used photovoltaic array mounts in photovoltaic power generation systems. Because they track the sun's azimuth during the day, photovoltaic modules using flat single-axis trackers can generate 15%-25% more power annually than modules using optimal fixed-tilt mounts. Because these modules rotate around their axis, they are typically supported by a central beam. The modules are mounted above the beam and rotate about its center.

[0062] However, this type of structure will cause the rotating part of the tracking bracket to deflect upward or downward when facing strong winds, making it impossible to maintain the normal movement of the main beam along the set motion trajectory.

[0063] In addition, this type of structure, due to the longer north-south main beam and lower torsional rigidity, is very prone to torsional resonance under strong winds, which in turn causes devastating damage to the tracking bracket.

[0064] To address this issue, existing technologies often employ the installation of damping rods to mitigate wind-induced oscillations. However, this measure is not ideal in practice, especially when the components mounted on the main beam are large in transverse dimension. Using this measure alone can still damage the tracking bracket.

[0065] In view of this, please refer to Figures 1 to 13. The support structure 1000 and photovoltaic tracking bracket provided in the embodiments of the present disclosure can solve this problem, which will be described in detail below.

[0066] Please first refer to Figures 1 to 3. The present disclosure provides a photovoltaic tracking bracket, which includes a main beam 2000 and a support structure 1000. The arc bearings 200 (described in detail below) of multiple support structures 1000 are installed at intervals along the length direction of the main beam 2000. The support structure 1000 can enable the photovoltaic tracking bracket to maintain the normal movement of the main beam 2000 on the set motion trajectory, ensuring that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle.

[0067] It should be noted that, in this embodiment, the photovoltaic tracking bracket is a flat single-axis tracking bracket.

[0068] Specifically, the support structure 1000 includes a bearing seat 100, an arc bearing 200, a first roller 300 and a second roller 400. The first roller 300 is rotatably connected to the bearing seat 100; the second roller 400 is rotatably connected to the bearing seat 100, the arc bearing 200 is configured to support the main beam 2000 of the photovoltaic tracking bracket, the first roller 300 is configured to roll against the arc-shaped outer wall 221 of the arc bearing 200, and the second roller 400 is configured to roll against the arc-shaped inner wall 222 of the arc bearing 200 so that the arc bearing 200 rotates relative to the bearing seat 100.

[0069] Since both the first roller 300 and the second roller 400 can limit the movement of the bearing seat 100, usually under the action of gravity, the photovoltaic tracking bracket is supported on the first roller 300 at the arc-shaped outer wall 221 of the bearing seat 100 through the arc bearing 200. When strong winds come, the rotating part of the photovoltaic tracking bracket will have an upward or downward deflection tendency. At this time, the arc bearing 200 will be restricted by the abutment of the second roller 400 at the arc-shaped inner wall 222 to avoid upward deflection, or the arc bearing 200 will be restricted by the abutment of the first roller 300 at the arc-shaped outer wall 221 to avoid downward deflection, so that it always remains on the set motion trajectory. That is to say, the bearing seat 100 can always rotate on the set motion trajectory, thereby maintaining the normal movement of the main beam 2000 on the set motion trajectory, ensuring that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle.

[0070] It should be noted that the arc bearing 200 includes a support plate 210 and an arc plate 220. The arc plate 220 has an arc-shaped inner wall 222 and an arc-shaped outer wall 221. The arc plate 220 is in the shape of a semicircular arc. The support plate 210 and the arc-shaped inner wall 222 are connected. The support plate 210 is configured to support the main beam 2000 of the photovoltaic tracking bracket.

[0071] Part of the wall surface of the arc-shaped outer wall 221 is recessed toward the arc-shaped inner wall 222 to form a roller guide groove 223, and the first roller 300 rolls against the roller guide groove 223. At the same time, the roller guide groove 223 is also semicircular, that is, the roller guide groove 223 extends along the periphery of the arc plate 220.

[0072] The roller guide groove 223 can guide the first roller 300 (shown in FIG. 5 ) to roll. At the same time, the roller guide groove 223 can limit the first roller 300 , thereby limiting the movement of the arc bearing 200 in the axial direction.

[0073] The second roller 400 may have the same structure as the first roller 300 , and the specific structure of the second roller 400 may refer to the structure of the first roller 300 .

[0074] It is easy to understand that in this embodiment, the rotation axis of the first roller 300 is parallel to the rotation axis of the second roller 400 . At the same time, the rotation axis of the first roller 300 is also parallel to the rotation axis of the arc bearing 200 .

[0075] In order to prevent the first roller 300 and the second roller 400 from sliding out of the arc bearing 200, the support structure 1000 also includes a limit member 500. The limit member 500 can be a bolt. The limit member 500 is connected to the support plate 210 of the arc bearing 200. The limit member 500 is configured to abut the second roller 400 when the arc bearing 200 rotates to the extreme position.

[0076] There are two limit members 500 here, and two circular holes are provided on the support plate 210 to facilitate the installation of bolts, that is, the number of extreme positions is two. The extreme positions here can be understood as the maximum angle of deflection of the arc bearing 200 in the east-west direction. When no deflection occurs, it can be understood that the rotating part of the photovoltaic tracking bracket is at an angle of 0°, which is a windproof working condition.

[0077] Here, it should be noted that the rotating portion of the photovoltaic tracking bracket can be understood as a structure that deflects in the east-west direction together with the arc bearing 200 .

[0078] It should be noted that the number of the roller guide grooves 223 and the first rollers 300 are both multiple, and the multiple roller guide grooves 223 are distributed in parallel. At least one first roller 300 is configured to roll against a roller guide groove 223. It should be noted that in this embodiment, multiple can be understood as at least two.

[0079] In this embodiment, there are two roller guide grooves 223 , which are distributed in parallel. Specifically, two first rollers 300 are configured to roll against the same roller guide groove 223 .

[0080] Of course, in other embodiments, the number of the roller guide grooves 223 may also be three, and the three first rollers 300 are configured to roll against the same roller guide groove 223 .

[0081] In order to avoid resonance, please refer to Figure 1 again. The support structure 1000 includes multiple roller groups, and the multiple roller groups are respectively located at multiple support positions spaced apart on the arc bearing 200. Among them, the number of the first roller 300 and the second roller 400 are both multiple, and the first roller 300 and the second roller 400 located at the same support position of the arc bearing 200 form a roller group.

[0082] In this embodiment, the support structure 1000 includes two roller groups, which are respectively located at two support positions spaced apart on the arc bearing 200. The first roller 300 and the second roller 400 located at the same support position of the arc bearing 200 form a roller group.

[0083] Each roller assembly includes two first rollers 300 , and the two first rollers 300 rotate along a common axis. Each roller assembly also includes two second rollers 400 , and the two second rollers 400 are located on opposite sides of the support plate 210 .

[0084] In this way, the two pairs of roller arc bearings 200 on the inner and outer sides of the bearing seat 100 form two fulcrums, and the distance between the two fulcrums is relatively wide. Therefore, the vertical line of the center of gravity of the rotating part of the photovoltaic tracking bracket is always between the two fulcrums within a certain rotation angle range.

[0085] This ensures that the rotating part of the photovoltaic tracking bracket will not generate additional eccentric torque due to strong wind shaking when the angle is 0° in the windproof working condition.

[0086] At the same time, under normal operating conditions, the driver can transmit the rotational force along the center of the main beam 2000 through the main beam 2000, driving the main beam 2000 and the arc bearing 200 to rotate slowly on the bearing seat 100. However, when strong winds act, due to the uncertainty of the vector direction of the force, the component of the wind force that can cause the main beam 2000 to rotate is relatively small, and this two-point support structure often forms a flipping force centered on one of the points, making it difficult to form a regular oscillating torque. Therefore, it can effectively suppress the oscillation of the rotating part of the tracking bracket, and will not produce resonance, thereby avoiding the situation where the photovoltaic tracking bracket is damaged.

[0087] In addition, it should be noted that the number of roller groups can also be three, four or five, etc. The more roller groups there are, the more support points there are, and the rotation of the arc bearing 200 is smoother.

[0088] It should be noted that, in this embodiment, as shown in Figure 3, since the length of the support plate 210 in the direction of the rotation axis of the arc bearing 200 is smaller than the length of the arc plate 220 in the direction of the rotation axis of the arc bearing 200, that is, the thickness of the support plate 210 is smaller than the thickness of the arc plate 220.

[0089] Therefore, the edges of the arc-shaped plate 220 may protrude toward both sides of the support plate 210 so as to facilitate abutment of the second rollers 400 on both sides.

[0090] Furthermore, in some embodiments, as shown in FIG. 4 , the number of the roller guide groove 223 may be one. In this case, a roller assembly only includes one first roller 300 and two second rollers 400 .

[0091] Among them, it should be noted that the support plate 210 is provided with a limiting groove 211 (as shown in Figure 4), and the limiting groove 211 is configured to support the main beam 2000. The limiting groove 211 is a U-shaped groove. At the same time, the support structure 1000 also includes a pressure plate 600 (as shown in Figure 6). The pressure plate 600 and the support plate 210 are connected by bolts. The limiting groove 211 and the side wall of the pressure plate 600 jointly define a limiting channel. The main beam 2000 is configured to pass through the limiting channel to realize the installation of the main beam 2000.

[0092] In this embodiment, the cross-section of the main beam 2000 is rectangular (as shown in Figure 11). Of course, in other embodiments, the support structure 1000 provided in this embodiment can also be applicable to main beams 2000 with other cross-sectional shapes, for example, the cross-section of the main beam 2000 is circular (as shown in Figure 12), or the cross-section of the main beam 2000 is polygonal, such as a hexagon (as shown in Figure 13).

[0093] The position of the bearing seat 100 remains unchanged during the power generation process of the photovoltaic module. The rotation of the arc bearing 200 realizes the deflection of the photovoltaic module on the main beam 2000 in the east-west direction, thereby tracking the azimuth angle changes of the sun.

[0094] In addition, the photovoltaic tracking bracket provided in this embodiment can also effectively reduce the eccentric torque of the rotating part of the photovoltaic tracking bracket.

[0095] Specifically, the center of the arc bearing 200 and the center of the main beam 2000 can be designed to coincide or not. Normally, when the center of the arc bearing 200 coincides with the center of the main beam 2000, the driver transmits the driving torque through the main beam 2000 relatively smoothly. At the same time, under the action of strong winds, the oscillating torque transmitted from the main beam 2000 to the driver is also relatively smooth, which is not conducive to suppressing the torsional oscillation of the photovoltaic tracking bracket.

[0096] When the center of the arc bearing 200 does not coincide with the center of the main beam 2000, the more favorable trend is to increase the radius of the arc bearing 200 and move the center of the arc bearing 200 upward. This can simultaneously reduce the eccentric torque of the rotating part of the photovoltaic tracking bracket, which is beneficial to driving balance.

[0097] However, the greater the distance between the center of the arc bearing 200 and the center of the main beam 2000, the less smoothly the driver transmits the driving torque through the main beam 2000. Furthermore, in high winds, the transmission of oscillating torque from the main beam 2000 to the driver also becomes less smooth. While this transmission is less pronounced at low speeds, it becomes more pronounced at high speeds, and the impact increases exponentially with increasing speed.

[0098] Therefore, by appropriately increasing the distance between the center of the arc bearing 200 and the center of the main beam 2000, the torsional oscillation of the tracking bracket can be effectively suppressed.

[0099] However, the distance between the center of the arc bearing 200 and the center of the main beam 2000 cannot be designed to be too large. If the distance is too large, a jam will occur between the arc bearing 200 and the bearing seat 100 when the driver transmits the driving torque. In severe cases, it will be completely stuck and unable to rotate.

[0100] Typically, the center 201 of the arc bearing 200 is set between the upper end surface 2001 of the main beam 2000 (as shown in Figure 11) and the center 2002 of the main beam 2000, and the center 201 of the arc bearing 200 is located on the center line 2010 of the main beam 2000 in the vertical direction.

[0101] Here, the upper end surface 2001 of the main beam 2000 can be understood as the upper end surface of the main beam 2000 when the rotation angle is 0°.

[0102] Alternatively, as shown in Figure 12, when the cross-section of the main beam 2000 is circular, the center 201 of the arc bearing 200 is set between the highest point 2003 of the main beam 2000 and the center 2002 of the main beam 2000, and the center 201 of the arc bearing 200 is located on the center line 2010 of the main beam 2000 in the vertical direction.

[0103] Here, the highest point 2003 of the main beam 2000 can be understood as the highest point when the main beam 2000 is at a rotation angle of 0°.

[0104] In a specific application process, the optimal distance between the center 201 of the arc bearing 200 and the center 2002 of the main beam 2000 can be determined through experiments.

[0105] In addition, it should be noted that, please refer to Figures 7 to 10. In this embodiment, the bearing seat 100 includes a connecting plate 110, a first plate body 120, a second plate body 130, a through shaft 140 and a cantilever shaft 150. The first plate body 120 and the second plate body 130 are spaced apart on the connecting plate 110, and the through shaft 140 penetrates the first plate body 120 and the second plate body 130 at the same time, wherein a plurality of first rollers 300 rotate on the same through shaft 140.

[0106] The connecting plate 110 is configured to connect the upper end of a column (not shown), and the lower end of the column is connected to the pile foundation to support the photovoltaic module.

[0107] There are multiple cantilever shafts 150 , specifically, there are four cantilever shafts 150 , two of which are connected to the first plate 120 , and the other two cantilever shafts 150 are connected to the second plate 130 , and each second roller 400 is rotatably connected to each cantilever shaft 150 .

[0108] Specifically, in one roller assembly, two first rollers 300 are rotatably connected to the same through-shaft 140 , and two second rollers 400 are rotatably connected to two cantilever shafts 150 , respectively. The cantilever shafts 150 are shorter than the through-shaft 140 .

[0109] Specifically, a retaining ring is provided at the end of the cantilever shaft 150 to prevent the second roller 400 from sliding out axially, and retaining rings are provided at both ends of the through shaft 140 to limit the first roller 300 from sliding in the axial direction of the through shaft 140.

[0110] In addition, it should be noted that when installing the support structure 1000, as shown in Figure 1, the arc bearing 200 is first firmly installed under the main beam 2000 with a pressure plate 600 and bolts, and then as shown in Figure 7, the through shaft 140, the cantilever shaft 150 and the roller are installed on the bearing seat 100, the second roller 400 is installed on the cantilever shaft 150, and the first roller 300 is installed on the through shaft 140, and then the arc bearing 200 is introduced between the first roller 300 and the second roller 400, and then the guide ports at both ends of the arc bearing 200 are locked with the limit members 500 to prevent the arc bearing 200 from slipping out of the bearing seat 100.

[0111] To summarize, the support structure 1000 includes a bearing seat 100, an arc bearing 200, a first roller 300 and a second roller 400. The first roller 300 is rotatably connected to the bearing seat 100, the second roller 400 is rotatably connected to the bearing seat 100, the arc bearing 200 is configured to support the main beam 2000 of the photovoltaic tracking bracket, the first roller 300 is configured to roll against the arc-shaped outer wall 221 of the arc bearing 200, and the second roller 400 is configured to roll against the arc-shaped inner wall 222 of the arc bearing 200 so that the arc bearing 200 rotates relative to the bearing seat 100.

[0112] Since both the first roller 300 and the second roller 400 can limit the movement of the bearing seat 100, usually under the action of gravity, the photovoltaic tracking bracket is supported on the first roller 300 at the arc-shaped outer wall 221 of the bearing seat 100 through the arc bearing 200. When strong winds come, the rotating part of the photovoltaic tracking bracket will have an upward or downward deflection tendency. At this time, the arc bearing 200 will be restricted by the abutment of the second roller 400 at the arc-shaped inner wall 222 to avoid upward deflection, or the arc bearing 200 will be restricted by the abutment of the first roller 300 at the arc-shaped outer wall 221 to avoid downward deflection, so that it always remains on the set motion trajectory, thereby being able to maintain the normal movement of the main beam 2000 on the set motion trajectory, ensuring that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle.

[0113] The support structure 1000 adopts an arc-shaped bearing combined with a multi-point support method, while taking into account the elimination of the eccentric moment of the rotating part of the photovoltaic tracking bracket and the influence of the eccentricity of the main beam 2000 on the torque transmission. It can not only ensure that the photovoltaic tracking bracket can rotate flexibly during slow tracking operation, but also effectively suppress the torsional oscillation of the photovoltaic tracking bracket under the action of strong winds, fundamentally eliminating the torsional resonance damage to the tracking bracket caused by strong winds, making the operation of the tracking bracket safer and more reliable.

[0114] At the same time, the support structure 1000 has strong anti-oscillation ability and can fundamentally eliminate the torsional resonance damage of the photovoltaic tracking bracket; the bearing arc of the support structure 1000 rotates smoothly and can withstand strong upward pull force, and has a strong load-bearing capacity; the support structure 1000 is supported by two roller groups, and the distance between the two support points is large, making the support more stable and reliable; the support structure 1000 can effectively reduce the eccentric torque of the rotating part of the photovoltaic tracking bracket, which is beneficial to drive balance; the support structure 1000 has a simple structure, high factory integration, and is easy to install on site.

[0115] The photovoltaic tracking bracket includes a main beam 2000 and the above-mentioned support structure 1000. The arc bearings 200 of the multiple support structures 1000 are installed at intervals along the length direction of the main beam 2000. The photovoltaic tracking bracket has all the functions of the above-mentioned support structure 1000.

[0116] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims. Industrial Applicability

[0117] In summary, the present disclosure provides a support structure and a photovoltaic tracking bracket, which can maintain the normal movement of the main beam on the set motion trajectory, and ensure that the photovoltaic tracking bracket can normally track the changes in the solar azimuth angle. The support structure adopts an arc bearing combined with a multi-point support method, while taking into account the elimination of the eccentric torque of the rotating part of the photovoltaic tracking bracket and the influence of the eccentricity of the main beam on the torque transmission. It can not only ensure that the photovoltaic tracking bracket can rotate flexibly during slow tracking operation, but also effectively suppress the torsional oscillation of the photovoltaic tracking bracket under the action of strong winds, fundamentally eliminating the torsional resonance damage to the tracking bracket caused by strong winds, making the tracking bracket safer and more reliable. The support structure has strong anti-oscillation ability and can fundamentally eliminate the torsional resonance damage of the photovoltaic tracking bracket; the bearing arc of the support structure rotates smoothly and can withstand strong upward pull-out force, and has strong bearing capacity; the support structure adopts two roller groups for support, and the distance between the two support points is large, which makes the support more stable and reliable; the support structure can effectively reduce the eccentric torque of the rotating part of the photovoltaic tracking bracket, which is conducive to drive balance; the support structure has a simple structure, high factory integration, and is convenient for on-site installation. The photovoltaic tracking bracket can also effectively reduce the eccentric torque of the rotating part of the photovoltaic tracking bracket.

Claims

1. A support structure, characterized in that: include: Bearing seat (100); A first roller (300), the first roller (300) being rotatably connected to the bearing seat (100); a second roller (400), the second roller (400) being rotatably connected to the bearing seat (100); and An arc bearing (200), wherein the arc bearing (200) is configured to support a main beam (2000) of a photovoltaic tracking bracket, the first roller (300) is configured to roll against an arc-shaped outer wall (221) of the arc bearing (200), and the second roller (400) is configured to roll against an arc-shaped inner wall (222) of the arc bearing (200), so that the arc bearing (200) rotates relative to the bearing seat (100).

2. The support structure according to claim 1, characterized in that: The arc bearing (200) comprises a support plate (210) and an arc plate (220), wherein the arc plate (220) has an arc inner wall (222) and an arc outer wall (221), the support plate (210) and the arc inner wall (222) are connected, and the support plate (210) is configured to support a main beam (2000) of a photovoltaic tracking bracket.

3. The support structure according to claim 2, characterized in that: The support plate (210) is provided with a limiting groove (211), and the limiting groove (211) is configured to support the main beam.

4. The support structure according to claim 2 or claim 3, characterized in that: The shape of the arc plate (220) is a semicircular arc.

5. The support structure according to any one of claims 1 to 4, characterized in that: Part of the wall surface of the arc-shaped outer wall (221) is recessed toward the arc-shaped inner wall (222) to form a roller guide groove (223), and the first roller (300) is configured to roll and abut against the roller guide groove (223).

6. The support structure according to claim 5, characterized in that: The roller guide groove (223) extends along the periphery of the arc-shaped plate (220).

7. The support structure according to any one of claims 1 to 6, characterized in that: The rotation axis of the first roller (300) and the rotation axis of the second roller (400) are parallel.

8. The support structure according to any one of claims 1 to 7, characterized in that: The rotation axis of the first roller (300) is parallel to the rotation axis of the arc bearing (200).

9. The support structure according to any one of claims 3 to 8, characterized in that: The number of the roller guide grooves (223) and the number of the first rollers (300) are both multiple, the multiple roller guide grooves (223) are distributed in parallel, and at least one of the first rollers (300) is configured to roll and abut against one of the roller guide grooves (223).

10. The support structure according to claim 9, characterized in that The bearing seat (100) comprises a connecting plate (110), a first plate body (120), a second plate body (130) and a through shaft (140), wherein the first plate body (120) and the second plate body (130) are arranged at intervals on the connecting plate (110), and the through shaft (140) penetrates the first plate body (120) and the second plate body (130) at the same time; Wherein, a plurality of the first rollers (300) rotate about the same through-shaft (140).

11. The support structure according to claim 10, characterized in that The bearing seat (100) further comprises a cantilever shaft (150), wherein the cantilever shaft (150) is connected to the first plate body (120), and the second roller (400) is rotatably connected to the cantilever shaft (150).

12. The support structure according to any one of claims 1 to 11, characterized in that: The support structure further comprises a limiting member (500), wherein the limiting member (500) is connected to the arc bearing (200), and the limiting member (500) is configured such that when the arc bearing (200) rotates to an extreme position, it abuts against the second roller (400).

13. The support structure according to any one of claims 1 to 12, characterized in that: The support structure comprises a plurality of roller groups, and the plurality of roller groups are respectively located at a plurality of support positions spaced apart on the arc bearing (200); There are plural numbers of the first roller (300) and the second roller (400), and the first roller (300) and the second roller (400) located at the same supporting position of the arc bearing (200) form a roller group.

14. The support structure according to claim 13, characterized in that The supporting structure comprises two groups of roller groups.

15. The support structure according to claim 14, characterized in that Each group of the roller sets comprises two of the first rollers (300), and the two first rollers (300) rotate on a common axis. Each group of the roller sets also comprises two of the second rollers (400), and the two second rollers (400) are respectively located on opposite sides of the support plate (210).

16. The support structure according to claim 13, characterized in that The number of the roller guide groove (223) is one, and a group of the roller groups only includes one first roller (300) and two second rollers (400).

17. The support structure according to any one of claims 2 to 16, characterized in that: The length of the support plate (210) in the direction of the rotation axis of the arc bearing (200) is smaller than the length of the arc plate (220) in the direction of the rotation axis of the arc bearing (200), and the edges of the arc plate (220) protrude toward both sides of the support plate (210).

18. A photovoltaic tracking bracket, characterized in that: It comprises a main beam (2000) and a plurality of support structures according to any one of claims 1 to 17, wherein the arc bearings (200) of the plurality of support structures are installed at intervals along the length direction of the main beam (2000).

19. The photovoltaic tracking bracket according to claim 18, characterized in that: The center (201) of the arc bearing (200) is arranged between the upper end surface (2001) or the highest point (2003) of the main beam (2000) and the center (2002) of the main beam (2000), and the center (201) of the arc bearing (200) is located on the center line (2010) of the main beam (2000) in the vertical direction.

20. The photovoltaic tracking bracket according to claim 18 or claim 19, characterized in that: The photovoltaic tracking bracket is a flat single-axis tracking bracket.

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