Support connector and photovoltaic tracking support

Abstract

The present application relates to a support connector and a photovoltaic tracking support. The support connector comprises a column (100), a bearing housing (200) and a shaft connection structure (300), wherein the bearing housing (200) is fixed at the top of the column (100); a first bearing (210) is provided in the bearing housing (200); the shaft connection structure (300) passes through the bearing housing (200) and rotatably connects to the bearing housing (200) by means of the first bearing (210); and two ends of the shaft connection structure (300) are respectively configured to connect to the ends of main beam sections (10) of two adjacent support modules in the photovoltaic tracking support, and the shaft connection structure (300) allows the main beam sections (10) of the two adjacent support modules to rotate relative to each other.

Description

Bracket connector, photovoltaic tracking bracket

[0001] Cross-references

[0002] This application refers to Chinese Patent Application No. 2023116199531, filed on November 30, 2023, entitled “Bracket Connector, Photovoltaic Tracking Bracket”, which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application relates to the technical field of photovoltaic equipment, and in particular to a bracket connector and a photovoltaic tracking bracket. Background Art

[0004] A photovoltaic tracking system typically consists of a main beam, multiple supporting columns, and a drive mechanism that rotates the beam. PV modules are mounted on the main beam, and the drive mechanism rotates the beam to adjust the module's angle. Due to the main beam's length, multiple main beam segments are typically constructed and then connected sequentially to form a complete beam.

[0005] Photovoltaic tracking systems in related technologies are generally categorized as single-point drive systems and multi-point drive systems. In a single-point drive system, a single drive mechanism drives the main beam, enabling multiple main beam segments to rotate synchronously. As the power and size of photovoltaic modules increase, the length of the photovoltaic tracking brackets, and therefore the main beams, needs to be longer. However, the driving and holding forces of a single drive mechanism are limited, making them inadequate for longer photovoltaic tracking brackets. Therefore, multi-point drive systems are currently the primary solution. In a multi-point drive system, multiple drive mechanisms independently drive the rotation of multiple main beam segments.

[0006] PV project construction sites are often irregular in shape. To fully utilize the site resources and install more PV panels, PV tracking brackets of varying lengths are deployed. This results in a wide variety of component specifications, complex stocking, and inefficient installation. Furthermore, the design of PV tracking brackets cannot be quickly and flexibly adapted to the actual terrain. Summary of the Invention

[0007] According to various embodiments of the present application, a bracket connector and a photovoltaic tracking bracket are provided. Details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims.

[0008] A first aspect of an embodiment of the present application provides a bracket connector, which includes: a column, a bearing seat and an axis connection structure; the bearing seat is fixed to the top of the column; a first bearing is arranged in the bearing seat; the axis connection structure passes through the bearing seat and is rotatably connected to the bearing seat through the first bearing; the two ends of the axis connection structure are respectively used to connect with the ends of the main beam sections of two adjacent bracket modules of the photovoltaic tracking bracket, and the axis connection structure allows the main beam sections of the two adjacent bracket modules to rotate relative to each other.

[0009] In one embodiment, the shaft connection structure includes a first shaft and a second shaft, the first shaft includes a first extending section and a first connecting section connected along the axial direction; the second shaft includes a second extending section and a second connecting section connected along the axial direction; the first extending section extends into the bearing seat and is rotatably connected to the bearing seat through the first bearing; the second extending section extends into the first extending section and is rotatably connected to the first extending section through the second bearing; the second connecting section and the first connecting section are respectively connected to the ends of the main beam sections of the two adjacent support modules.

[0010] In one embodiment, a first flange extending in the circumferential direction is provided on the outer circumferential surface of the first shaft, and a second flange extending in the circumferential direction is provided on the outer circumferential surface of the second shaft; the bearing seat is located between the first flange and the second flange.

[0011] In one embodiment, sealing rings are provided between both ends of the inner side wall of the bearing seat and the outer side wall of the first extending section.

[0012] In one embodiment, a sealing ring is provided between an inner side wall of an end of the first extending section away from the first connecting section and an outer side wall of the second extending section.

[0013] In one embodiment, the bracket connector also includes a first retaining spring, the first extension section extends out of the bearing seat at one end away from the first connecting section, the first retaining spring is clamped to the outer periphery of the first extension section at one end away from the first connecting section, and the first retaining spring abuts against the side of the bearing seat away from the first connecting section.

[0014] In one embodiment, the inner side wall of the bearing seat has a first stop boss, and the outer wall of the first extending section has a first shoulder, and the first shoulder abuts against the first stop boss in a direction away from the first connecting section.

[0015] In one embodiment, the bracket connector also includes a second retaining spring, which is clamped to the outer periphery of the second extension section at one end away from the second connecting section; the inner side wall of the first shaft has a first limiting boss, and the second retaining spring abuts against the side of the first limiting boss away from the second connecting section.

[0016] In one embodiment, the inner side wall of the first shaft has a second stop boss, the outer wall of the second extending section has a second shaft shoulder, and the second shaft shoulder abuts against the second stop boss in a direction away from the second connecting section.

[0017] In one embodiment, the inner side wall of the first shaft has a third stop boss; the outer wall of the second extension section has a third shoulder, and the third shoulder abuts against the third stop boss in a direction away from the second connecting section; the third shoulder is located on the side of the second shoulder close to the second connecting section.

[0018] A second aspect of an embodiment of the present application provides a photovoltaic tracking bracket, comprising a bracket connector described in any one of the above embodiments and at least two bracket modules, wherein a single bracket module comprises a main beam section, a column supporting the main beam section, and a driving mechanism for driving the main beam section to rotate; the two ends of the shaft connection structure are respectively connected to the ends of the main beam sections of two adjacent bracket modules, and the shaft connection structure allows the main beam sections of the two adjacent bracket modules to rotate relative to each other.

[0019] According to a third aspect of an embodiment of the present application, there is provided a bracket connector, comprising: a column, a bearing seat, and a shaft connection structure; the bearing seat is fixed to the top of the column; a first bearing is provided in the bearing seat; the shaft connection structure is passed through the bearing seat and is rotatably connected to the bearing seat through the first bearing; both ends of the shaft connection structure are respectively used to connect to the ends of the main beam sections of two adjacent bracket modules of a photovoltaic tracking bracket, and the shaft connection structure allows the main beam sections of the two adjacent bracket modules to rotate relative to each other;

[0020] Among them, the bearing seat is provided with a limiting structure, the shaft connection structure is provided with a matching structure, and the limiting structure is arranged on the rotation path of the matching structure so that the limiting structure can block the matching structure at both ends of the rotation range of the matching structure.

[0021] In one embodiment, the limiting structure includes a first limiting surface and a second limiting surface, and the mating structure includes a first mating surface and a second mating surface; the mating structure has a first limit angle and a second limit angle at both ends of the rotation range; when the mating structure is at the first limit angle, the first mating surface abuts against the first limiting surface, and when the mating structure is at the second limit angle, the second mating surface abuts against the second limiting surface; along the rotation direction of the mating structure, the direction of the second mating surface is opposite to the direction of the first mating surface.

[0022] In one embodiment, the bearing seat is provided with a limit groove, and the first limit surface and the second limit surface are respectively the groove walls at the circumferential ends of the limit groove; the mating structure is a boss protruding from the side wall of the shaft connection structure, and the first mating surface and the second mating surface are respectively the surfaces at the circumferential ends of the boss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to better describe and illustrate the embodiments and / or examples of the applications disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed applications, the presently described embodiments and / or examples, and any of the best modes currently understood for these applications.

[0024] FIG1 is a schematic diagram showing the connection relationship between a bracket connector and main beam sections of two adjacent bracket modules according to an embodiment.

[0025] FIG2 is an exploded view of the structure of FIG1 .

[0026] FIG3 is a front view of FIG1 .

[0027] FIG4 is a partial enlarged view of area A in FIG3 .

[0028] FIG. 5 is a partial exploded view of a bracket connector according to another embodiment.

[0029] FIG6 is a left side view of the bearing seat in FIG5.

[0030] FIG7 is a cross-sectional view of the bearing seat of FIG6 .

[0031] FIG8 is a left side view of the first shaft in FIG5 .

[0032] FIG9 is a right side view of the second shaft in FIG5 .

[0033] Description of Figure Numbers:

[0034] Explanation of the accompanying drawings: 10, main beam section; 11, first main beam section; 12, second main beam section; 100, column; 110, connecting plate; 200, bearing seat; 210, first bearing; 220, second bearing; 300, shaft connection structure; 310, first shaft; 311, first extension section; 312, first connecting section; 313, first flange; 320, second shaft; 321, second extension section; 322, second connecting section; 323, second flange; 410, first sealing ring ; 420, second sealing ring; 430, third sealing ring; 510, first retaining spring; 520, second retaining spring; 610, first stop boss; 620, first shaft shoulder; 630, second stop boss; 630, first limiting boss; 640, second shaft shoulder; 650, third stop boss, 660, third shaft shoulder; 700, limiting groove; 710, first limiting surface; 720, second limiting surface; 800, mating structure; 810, first mating surface; 820, second mating surface. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application 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, and therefore cannot be understood as a limitation on this application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0041] In the prior art, photovoltaic project construction sites are often irregular in shape. To fully utilize site resources and install more photovoltaic modules, photovoltaic tracking brackets of varying lengths are deployed. This results in a wide variety of component specifications, complex stocking, and inefficient installation. Furthermore, the design of photovoltaic tracking brackets cannot be quickly and flexibly adapted to the actual terrain. To address these technical issues, the present application provides a bracket connector and a photovoltaic tracking bracket.

[0042] Please refer to Figures 1 to 4. An embodiment of the present application provides a bracket connector, which includes: a column 100, a bearing seat 200 and an axis connection structure 300. The bearing seat 200 is fixed to the top of the column 100. A first bearing 210 is provided in the bearing seat 200. The axis connection structure 300 is passed through the bearing seat 200 and is rotatably connected to the bearing seat 200 through the first bearing 210. The two ends of the axis connection structure 300 are respectively used to connect with the ends of the main beam sections 10 of two adjacent bracket modules of the photovoltaic tracking bracket, and the axis connection structure 300 allows the main beam sections 10 of the two adjacent bracket modules to rotate relative to each other.

[0043] The aforementioned bracket connector is applied to a photovoltaic tracking bracket, enabling modularization of the bracket, allowing the bracket to be divided into at least two sequentially connected bracket modules, with adjacent bracket modules connected via the aforementioned bracket connector. A single bracket module includes a main beam section 10, a column supporting the main beam section 10, and a drive mechanism for rotating the main beam section 10. The two adjacent bracket modules are defined as a first bracket module and a second bracket module, respectively. The main beam section 10 of the first bracket module is referred to as the first main beam section 11, and the main beam section 10 of the second bracket module is referred to as the second main beam section 12. The ends of the shaft connection structure 300 are respectively connected to one end of the first main beam section 11 and one end of the second main beam section 120, and the shaft connection structure 300 allows the first and second main beam sections 11 and 12 to rotate relative to each other. Because the shaft connection structure 300 passes through the bearing seat 200 and is rotatably connected to the bearing seat 200 via the first bearing 210, the shaft connection structure 300 can rotate relative to the column 100, thereby receiving support from the top of the column 100 via the bearing seat 200.

[0044] In this way, modular splicing of photovoltaic tracking brackets is achieved through bracket connectors, and each bracket module can operate independently of each other, so that any number of bracket modules can be spliced, and then the length of the photovoltaic tracking bracket can be adaptively adjusted according to the actual terrain requirements, and the design of the photovoltaic tracking bracket can be quickly and flexibly matched according to the terrain. At the same time, bracket modules and bracket connectors have become standardized products, which has achieved product standardization, reduced the types of parts, and improved installation efficiency. Wind tunnel testing is used to provide support and guidance for the design and calculation of photovoltaic tracking bracket products. Since the present application realizes modular splicing of photovoltaic tracking brackets through bracket connectors, each bracket module is a standardized product. Therefore, when conducting wind tunnel testing, only some bracket modules in the photovoltaic tracking bracket need to be tested, and there is no need to test all bracket module combinations one by one, saving wind tunnel testing costs and manpower.

[0045] In the multi-point drive system of related art, two adjacent main beam sections can rotate relative to each other via a mandrel connector. Therefore, compared with a rigid connection, the mandrel connector has lower connection stiffness and lower bending resistance. To ensure the bending resistance of the main beam, the distance between the two columns on either side of the mandrel connector needs to be closer to provide better support and enhance bending resistance. However, this limits the span of the photovoltaic tracking bracket, making it difficult to adjust larger spans.

[0046] However, when the bracket connector of the present application is used in a photovoltaic tracking bracket, since the bracket connector is located at the connection between two adjacent bracket modules, the shaft connection structure 300 is supported by the top of the column 100 via the bearing seat 200, so that the connection between the two adjacent bracket modules can be supported by the column 100 of the bracket connector, greatly improving the bending resistance of the connection between the two adjacent bracket modules, thereby reducing the requirements for the distance between the columns on both sides of the bracket connector, and facilitating the adjustment of larger spans. Since the span can be increased, the number of columns used can be reduced, thereby simplifying the structure of the photovoltaic tracking bracket and reducing costs.

[0047] Compared to single-point drive systems in related technologies, the present embodiment eliminates the need for synchronization of the drive mechanisms of adjacent support modules because the main beam sections of the two adjacent support modules can rotate relative to each other via the shaft connection structure 300. This allows the two adjacent support modules to operate independently without interfering with each other. If a failure occurs in one support module, it will not affect the normal operation of other support modules, reducing the scope of the failure. Furthermore, the fault location can be precisely located and easily repaired.

[0048] In conjunction with Figures 1 to 4, in one embodiment, the shaft connection structure 300 includes a first shaft 310 and a second shaft 320. The first shaft 310 includes a first extending section 311 and a first connecting section 312 connected axially. The second shaft 320 includes a second extending section 321 and a second connecting section 322 connected axially. The second connecting section 322 and the first connecting section 312 are respectively connected to the ends of the main beam sections 10 of two adjacent support modules. Specifically, the second connecting section 322 is connected to one end of the second main beam section 12, and the first connecting section 312 is connected to one end of the first main beam section 11. The first extending section 311 extends into the bearing seat 200 and is rotatably connected to the bearing seat 200 via the first bearing 210, thereby enabling the first main beam section 11 to rotate relative to the bearing seat 200, that is, relative to the column 100. The second extension section 321 extends into the first extension section 311 and is rotatably connected to the first extension section 311 via the second bearing 220. This allows the second main beam section 12 to rotate relative to the first extension section 311, that is, the second main beam section 12 can rotate relative to the first main beam section 11. This enables relative rotation of the main beam sections 10 of two adjacent support modules, and the shaft connection structure 300 is supported by the bearing seat 200 at the top of the column 100.

[0049] Compared with the single shaft tube form in the related technology CN218449976U, the shaft connection structure 300 of the embodiment of the present application has better bending resistance because the second extension section 321 extends into the first extension section 311 for rotational connection, and the first extension section 311 extends into the bearing seat 200 for rotational connection, thereby forming a layered and nested shaft connection structure 300.

[0050] In one embodiment, the first shaft 310 and the second shaft 320 are both hollow shaft tubes, which can reduce weight and cost.

[0051] Specifically, the first extending section 311 and the second extending section 321 are both in a circular tubular shape, which facilitates the rotational connection between the two and the rotational connection between the first extending section 311 and the bearing seat 200 .

[0052] As shown in Figures 1 and 2, in one embodiment, the main beam section 10 (the first main beam section 11 and the second main beam section 12) is a square tube structure. The first connecting section 312 and the second connecting section 322 are both square tube structures to adapt to the shapes of the first main beam section 11 and the second main beam section 12. Specifically, the first connecting section 312 is inserted into one end of the first main beam section 11 and adapts to the shape of the tubular cavity of the first main beam section 11, and the two are fixedly connected by fasteners such as bolts. The second connecting section 322 is inserted into one end of the second main beam section 12 and adapts to the shape of the tubular cavity of the second main beam section 12, and the two are fixedly connected by fasteners such as bolts.

[0053] In other embodiments, the first connecting section 312 and the second connecting section 322 are not limited to square tubes, but can also be round tubes, octagonal tubes, etc., as long as they can adapt to the tubular shape of the first main beam section 11 and the tubular shape of the second main beam section 12.

[0054] As shown in Figures 2 and 4, in one embodiment, a first flange 313 extending circumferentially is provided on the outer circumferential surface of the first shaft 310, and a second flange 323 extending circumferentially is provided on the outer circumferential surface of the second shaft 320. The bearing seat 200 is located between the first flange 313 and the second flange 323. Because the bearing seat 200 is blocked between the first flange 313 and the second flange 323, rainwater can be minimized from entering the bearing seat 200 from both sides, thereby reducing erosion of the bearing and the shaft connection structure 300. In particular, when the photovoltaic tracking bracket is installed on a slope, the main beam tilts, and the bracket connector tilts. The first flange 313 and the second flange 323 can minimize the intrusion of rainwater into the bearing seat 200.

[0055] As shown in Figures 2 and 4, in one embodiment, sealing rings are provided between both ends of the inner wall of the bearing seat 200 and the outer wall of the first extension section 311, namely a first sealing ring 410 and a second sealing ring 420, so as to prevent rainwater and air from entering between the bearing seat 200 and the first extension section 311 and causing erosion of the first extension section 311 and the first bearing 210.

[0056] As shown in Figures 2 and 4, in one embodiment, the bracket connector includes a first retaining spring 510. The end of the first extending section 311 that is distal to the first connecting section 312 extends out of the bearing seat 200. The first retaining spring 510 is engaged with the outer periphery of the end of the first extending section 311 distal to the first connecting section 312. The first retaining spring 510 abuts against the side of the bearing seat 200 distal to the first connecting section 312, thereby preventing the first shaft 310 from shifting in the direction of being pulled out of the bearing seat 200.

[0057] As shown in Figure 4, in one embodiment, the inner side wall of the bearing seat 200 has a first stop boss 610, and the outer wall of the first extension section 311 has a first shaft shoulder 620, and the first shaft shoulder 620 abuts against the first stop boss 610 in a direction away from the first connecting section 312, so that the first stop boss 610 can prevent the first shaft 310 from being positionally offset in the direction of being inserted into the bearing seat 200.

[0058] As shown in Figures 2 and 4, in one embodiment, a sealing ring, which is a third sealing ring 430, is provided between the inner wall of the end of the first extension section 311 away from the first connecting section 312 and the outer wall of the second extension section 321, so as to prevent rainwater from entering between the first extension section 311 and the second extension section 321 and causing erosion to the two and the second bearing 220.

[0059] As shown in Figures 2 and 4 , in one embodiment, the bracket connector further includes a second retaining spring 520, which is secured to the periphery of the second extending section 321 at an end distal from the second connecting section 322. The inner sidewall of the first shaft 310 includes a first limiting boss 630, and the second retaining spring 520 abuts against the side of the first limiting boss 630 distal from the second connecting section 322, thereby preventing the second shaft 320 from shifting in the direction of being withdrawn from the first extending section 311.

[0060] As shown in FIG4 , in one embodiment, the inner sidewall of the first shaft 310 has a second stop boss 630, and the outer wall of the second insertion section 321 has a second shoulder 640. The second shoulder 640 abuts against the second stop boss 630 in a direction away from the second connecting section 322, thereby preventing the second shaft 320 from shifting in the direction of insertion into the first insertion section 311. Furthermore, the cooperation between the second shoulder 640 and the second stop boss 630 also serves to block rainwater, thereby reducing the need for a sealing ring.

[0061] As shown in FIG. 4 , in one embodiment, the second stopping boss 630 and the first limiting boss 630 may be shared.

[0062] As shown in Figure 4, in one embodiment, the inner side wall of the first shaft 310 has a third stop boss 650. The outer wall of the second extension section 321 has a third shaft shoulder 660, which abuts against the third stop boss 650 in the direction away from the second connecting section 322, thereby further preventing the second shaft 320 from shifting in the direction of insertion into the first extension section 311. The cooperation between the third shaft shoulder 660 and the third stop boss 650 can also block rainwater, thereby reducing the need for a sealing ring. The third shaft shoulder 660 is located on the side of the second shaft shoulder 640 close to the second connecting section 322. By sequentially setting the shaft shoulders, a multi-level limit is formed, which reliably prevents the second shaft 320 from shifting in the direction of insertion into the first extension section 311. In addition, the effect of blocking rainwater is further enhanced.

[0063] As shown in Figures 2 and 4, in one embodiment, the bracket connector includes a connecting plate 110, and the connecting plates 110 are fixedly provided on both sides of the top of the column 100, and the two ends of the bottom of the bearing seat 200 are fixedly connected to the connecting plates 110 on both sides of the column 100, so that the bottom of the bearing seat 200 as a whole can fit better with the top of the column 100, and can be reliably fixedly connected to the column 100 through the connecting plate 110.

[0064] When encountering strong winds, photovoltaic tracking systems require a drive mechanism to rotate the main beam to a wind-resistant angle to reduce the risk of damage to the photovoltaic modules. Currently, photovoltaic tracking systems rely primarily on the holding force of the drive mechanism to maintain the main beam at the wind-resistant angle to resist external wind loads. This places high demands on the drive mechanism's specifications and results in high costs.

[0065] Please refer to Figure 5. An embodiment of the present application also provides a bracket connector, which includes: a column, a bearing seat 200 and an axis connection structure. The bearing seat 200 is fixed to the top of the column. A first bearing 210 is provided in the bearing seat 200. The axis connection structure passes through the bearing seat 200 and is rotatably connected to the bearing seat 200 through the first bearing 210. The two ends of the axis connection structure are respectively used to connect with the ends of the main beam sections of two adjacent bracket modules of the photovoltaic tracking bracket, and the axis connection structure allows the main beam sections of the two adjacent bracket modules to rotate relative to each other. The bracket connector of this embodiment is basically the same as the bracket connector of the aforementioned embodiment, and therefore has the same technical effect as the aforementioned embodiment, which will not be repeated here. The following focuses on the differences between the bracket connector of this embodiment and the bracket connector of the aforementioned embodiment.

[0066] The bearing seat 200 is provided with a limiting structure, and the shaft connection structure 300 is provided with a matching structure 800. The limiting structure is provided on the rotation path of the matching structure 800 so that the limiting structure can block the matching structure 800 at both ends of the rotation range of the matching structure 800.

[0067] Since the mating structure 800 is provided on the shaft connection structure 300, the rotation energy of the mating structure 800 rotates along with the shaft connection structure 300. Since the limiting structure is provided on the rotation path of the mating structure 800, the limiting structure limits the rotation range of the mating structure 800. In other words, when the mating structure 800 rotates to the two ends of its rotation range, it is blocked by the limiting structure, thus limiting the two extreme rotation angles (the first extreme angle and the second extreme angle) of the mating structure 800, and its rotation range is located between the two extreme rotation angles. It can be understood that when the mating structure 800 is at the first extreme angle, the limiting structure blocks the mating structure 800 from rotating in the first direction. When the mating structure 800 is at the second extreme angle, the limiting structure blocks the mating structure 800 from rotating in the second direction. The second direction is a rotation direction opposite to the first direction, and when one is clockwise, the other is counterclockwise.

[0068] When the photovoltaic tracking bracket is in use, when the wind load causes the main beam to have a tendency to rotate in the first direction, the first limit angle is used as the wind protection angle, that is, the main beam section is rotated to the first limit angle. Since the matching structure 800 is provided on the shaft connection structure 300, and the shaft connection structure 300 is connected to the main beam section, the matching structure 800 is also rotated to the first limit angle. When the matching structure 800 is at the first limit angle, the limiting structure blocks the matching structure 800 from rotating in the first direction, thereby preventing the main beam section from rotating in the first direction. In this way, the abutment force of the limiting structure on the matching structure 800 can resist the torque in the first direction caused by the wind load on the main beam section, thereby increasing the wind resistance of the photovoltaic tracking bracket and reducing the requirements and cost of the driving mechanism.

[0069] Similarly, when the photovoltaic tracking bracket is in use, when the wind load causes the main beam to have a tendency to rotate in the second direction, the second limit angle is used as the wind protection angle, that is, the main beam section is rotated to the second limit angle. Since the matching structure 800 is provided on the shaft connection structure 300, and the shaft connection structure 300 is connected to the main beam section, the matching structure 800 is also rotated to the second limit angle. When the matching structure 800 is at the second limit angle, the limiting structure blocks the matching structure 800 from rotating in the second direction, thereby preventing the main beam section from rotating in the second direction. In this way, the abutment force of the limiting structure on the matching structure 800 can resist the torque in the second direction caused by the wind load on the main beam section, thereby increasing the wind resistance of the photovoltaic tracking bracket and reducing the requirements and cost of the driving mechanism.

[0070] At the same time, two adjacent bracket modules can still rotate relative to each other through the bracket connector, thereby allowing the asynchrony of the driving mechanisms of the two adjacent bracket modules.

[0071] In conjunction with Figures 5 to 9, in one embodiment, the limiting structure includes a first limiting surface 710 and a second limiting surface 720, and the matching structure 800 includes a first matching surface 810 and a second matching surface 820. The matching structure 800 has a first limit angle and a second limit angle at both ends of the rotation range. When the matching structure 800 is at the first limit angle, the first matching surface 810 abuts against the first limiting surface 710, and when the matching structure 800 is at the second limit angle, the second matching surface 820 abuts against the second limiting surface 720. Along the rotation direction of the matching structure 800, the direction of the second matching surface 820 is opposite to the direction of the first matching surface 810. It can be understood that the direction of the first matching surface 810 is along the first direction in the above embodiment, and the direction of the second matching surface 820 is along the second direction in the above embodiment.

[0072] When the mating structure 800 is at a first extreme angle, the first mating surface 810 abuts the first limiting surface 710, thereby preventing the first mating surface 810 from further rotating in the first direction. This means that the mating structure 800 is prevented from further rotating in the first direction, thereby preventing the main beam section from rotating in the first direction. Therefore, the abutment force exerted by the first limiting surface 710 against the first mating surface 810 can resist the torque in the first direction caused by the wind load on the main beam section. Similarly, when the mating structure 800 is at a second extreme angle, the second mating surface 820 abuts the second limiting surface 720, thereby preventing the second mating surface 820 from further rotating in the second direction. This means that the mating structure 800 is prevented from further rotating in the second direction, thereby preventing the main beam section from rotating in the second direction. Therefore, the abutment force exerted by the second limiting surface 720 against the second mating surface 820 can resist the torque in the second direction caused by the wind load on the main beam section. Through the limiting structure and matching structure 800 of this embodiment, the limiting structure can block the matching structure 800 at both ends of the rotation range of the matching structure 800, and the abutment force of the limiting structure on the matching structure 800 can effectively resist the torque caused by the wind load on the main beam section.

[0073] In one embodiment, the bearing seat 200 is provided with a limiting groove 700, and the first limiting surface 710 and the second limiting surface 720 are respectively the groove walls at the circumferential ends of the limiting groove. The matching structure 800 is a boss protruding from the side wall of the shaft connection structure 300, and the first matching surface 810 and the second matching surface 820 are respectively the surfaces at the circumferential ends of the boss. In other words, the matching structure 800 (boss) rotates in the limiting groove 700, and the extension length of the limiting groove 700 is the rotation range of the matching structure 800. When the matching structure 800 rotates to the two ends of the limiting groove, it abuts against the groove walls at the two ends of the limiting groove, thereby limiting the two extreme rotation angles of the matching structure 800. The limiting structure and matching structure of this embodiment are simple in design and reliable in matching.

[0074] In other embodiments, a limiting groove may be opened on the shaft connection structure, and the first mating surface and the second mating surface are groove walls at both ends of the circumferential direction of the limiting groove, and a boss is provided on the bearing seat, and the first limiting surface and the second limiting surface are surfaces at both ends of the circumferential direction of the boss.

[0075] With reference to Figures 5 to 8 , in one embodiment, a retaining structure is provided at each end of the bearing seat 200. A mating structure 800 is provided on each of the first shaft 310 and the second shaft 320. The retaining structure on one end of the bearing seat 200 mates with the mating structure 800 on the first shaft 310. The retaining structure on the other end of the bearing seat 200 mates with the mating structure 800 on the second shaft 320.

[0076] In this way, the limiting structure at one end of the bearing seat 200 blocks the mating structure 800 on the first shaft 310 at both ends of its rotational range, thereby allowing the abutment force exerted by the limiting structure on the mating structure 800 to effectively resist the torque caused by wind loads on the main beam section connected to the first shaft 310. Similarly, the limiting structure at the other end of the bearing seat 200 blocks the mating structure 800 on the second shaft 320 at both ends of its rotational range, thereby allowing the abutment force exerted by the limiting structure on the mating structure 800 to effectively resist the torque caused by wind loads on the main beam section connected to the second shaft 320. At the same time, the first shaft 310 and the second shaft 320 can still rotate relative to each other, thereby allowing for asynchrony between the drive mechanisms of the support modules connected to the first shaft 310 and the drive mechanisms of the support modules connected to the second shaft 320.

[0077] In the embodiment shown in FIG. 5 , the limiting structure is provided on the axial end surface of the bearing seat. In other embodiments, the limiting structure may also be provided on the inner side wall of the bearing seat.

[0078] One embodiment of the present application further provides a photovoltaic tracking bracket, comprising the bracket connector of any of the aforementioned embodiments and at least two bracket modules, wherein each bracket module includes a main beam section 10, a column supporting the main beam section 10, and a drive mechanism for rotating the main beam section 10. The ends of an axial connection structure 300 are respectively connected to the ends of the main beam sections 10 of two adjacent bracket modules, and the axial connection structure 300 allows the main beam sections 10 of the two adjacent bracket modules to rotate relative to each other.

[0079] In the above-mentioned bracket connector and photovoltaic tracking bracket, the modularization of the photovoltaic tracking bracket can be realized, so that the photovoltaic tracking bracket can be divided into at least two bracket modules connected in sequence, and the two adjacent bracket modules are connected through the above-mentioned bracket connector. A single bracket module includes a main beam section, a column supporting the main beam section, and a driving mechanism for driving the main beam section to rotate. The two adjacent bracket modules are respectively defined as the first bracket module and the second bracket module, the main beam section of the first bracket module is the first main beam section, and the main beam section of the second bracket module is the second main beam section. The two ends of the shaft connection structure are respectively connected to one end of the first main beam section and one end of the second main beam section, and the shaft connection structure allows the first main beam section and the second main beam section to rotate relative to each other. Since the shaft connection structure is passed through the bearing seat and is rotatably connected to the bearing seat through the first bearing, the shaft connection structure can rotate relative to the column, thereby obtaining support from the top of the column via the bearing seat.

[0080] In this way, the modular assembly of photovoltaic tracking brackets is achieved through bracket connectors. Each bracket module can operate independently, allowing any number of bracket modules to be combined. The length of the photovoltaic tracking bracket can be adaptively adjusted according to the actual terrain requirements, allowing the design of the photovoltaic tracking bracket to be quickly and flexibly adapted to the terrain. Furthermore, bracket modules and bracket connectors are standardized, achieving product standardization, reducing the number of parts, and improving installation efficiency.

[0081] Wind tunnel testing provides support and guidance for the design and calculation of photovoltaic tracking bracket products. Because this application utilizes bracket connectors to achieve modular assembly of photovoltaic tracking brackets, and each bracket module is standardized, wind tunnel testing only requires testing a subset of the bracket modules, eliminating the need to test all bracket modules individually. This reduces wind tunnel testing costs and labor.

[0082] In the multi-point drive system of related art, two adjacent main beam sections can rotate relative to each other via a mandrel connector. Therefore, compared with a rigid connection, the mandrel connector has lower connection stiffness and lower bending resistance. To ensure the bending resistance of the main beam, the distance between the two columns on either side of the mandrel connector needs to be closer to provide better support and enhance bending resistance. However, this limits the span of the photovoltaic tracking bracket, making it difficult to adjust larger spans.

[0083] However, when the bracket connector of the present application is used in a photovoltaic tracking bracket, since the bracket connector is located at the connection between two adjacent bracket modules, the shaft connection structure is supported by the top of the column via the bearing seat, so that the connection between the two adjacent bracket modules can be supported by the column of the bracket connector, which greatly improves the bending resistance of the connection between the two adjacent bracket modules, thereby reducing the requirements for the distance between the columns on both sides of the bracket connector, and facilitating the adjustment of larger spans. Since the span can be increased, the number of columns used can be reduced, thereby simplifying the structure of the photovoltaic tracking bracket and reducing costs.

[0084] Compared to the single-point drive systems used in related technologies, the embodiments of this application eliminate the need for synchronization of the drive mechanisms of adjacent support modules because the main beam sections of two adjacent support modules can rotate relative to each other via an axial connection. This allows the two adjacent support modules to operate independently without interfering with each other. If a failure occurs in one support module, it will not affect the normal operation of other support modules, reducing the scope of the failure. Furthermore, the fault location can be precisely located and easily repaired.

[0085] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A bracket connector, wherein: The bracket connector includes: a column, a bearing seat and an axis connection structure; the bearing seat is fixed to the top of the column; a first bearing is arranged in the bearing seat; the axis connection structure passes through the bearing seat and is rotatably connected to the bearing seat through the first bearing; the two ends of the axis connection structure are respectively used to connect with the ends of the main beam sections of two adjacent bracket modules of the photovoltaic tracking bracket, and the axis connection structure allows the main beam sections of the two adjacent bracket modules to rotate relative to each other.

2. The bracket connector according to claim 1, wherein: The shaft connection structure includes a first shaft and a second shaft, the first shaft includes a first extending section and a first connecting section connected along the axial direction; the second shaft includes a second extending section and a second connecting section connected along the axial direction; the first extending section extends into the bearing seat and is rotatably connected to the bearing seat through the first bearing; the second extending section extends into the first extending section and is rotatably connected to the first extending section through the second bearing; the second connecting section and the first connecting section are respectively connected to the ends of the main beam sections of the two adjacent support modules.

3. The bracket connector according to claim 1, wherein: A first flange extending in the circumferential direction is arranged on the outer circumferential surface of the first shaft, and a second flange extending in the circumferential direction is arranged on the outer circumferential surface of the second shaft; the bearing seat is located between the first flange and the second flange.

4. The bracket connector according to claim 1, wherein: Sealing rings are arranged between the two ends of the inner side wall of the bearing seat and the outer side wall of the first extending section.

5. The bracket connector according to claim 1, wherein: A sealing ring is arranged between an inner side wall of an end of the first extending section away from the first connecting section and an outer side wall of the second extending section.

6. The bracket connector according to claim 1, wherein: It also includes a first retaining spring, wherein one end of the first extension section away from the first connecting section extends out of the bearing seat, the first retaining spring is clamped to the outer periphery of the end of the first extension section away from the first connecting section, and the first retaining spring abuts against a side of the bearing seat away from the first connecting section.

7. The bracket connector according to claim 1, wherein: The inner side wall of the bearing seat has a first stop boss, and the outer wall of the first extending section has a first shaft shoulder, and the first shaft shoulder abuts against the first stop boss in a direction away from the first connecting section.

8. The bracket connector according to claim 1, wherein: It also includes a second retaining spring, which is clamped on the outer periphery of the second extension section at one end away from the second connecting section; the inner side wall of the first shaft has a first limiting boss, and the second retaining spring abuts against the side of the first limiting boss away from the second connecting section.

9. The bracket connector according to claim 1, wherein: The inner side wall of the first shaft has a second stop boss, and the outer wall of the second extending section has a second shaft shoulder, and the second shaft shoulder abuts against the second stop boss in a direction away from the second connecting section.

10. A bracket connector, wherein: The support connector comprises: a column, a bearing seat and an axis connection structure; the bearing seat is fixed to the top of the column; a first bearing is arranged in the bearing seat; the axis connection structure is passed through the bearing seat and is rotatably connected to the bearing seat through the first bearing; the two ends of the axis connection structure are respectively used to connect with the ends of the main beam sections of two adjacent support modules of the photovoltaic tracking support, and the axis connection structure allows the main beam sections of the two adjacent support modules to rotate relative to each other; Among them, the bearing seat is provided with a limiting structure, the shaft connection structure is provided with a matching structure, and the limiting structure is arranged on the rotation path of the matching structure so that the limiting structure can block the matching structure at both ends of the rotation range of the matching structure.

11. The bracket connector according to claim 10, wherein: The limiting structure includes a first limiting surface and a second limiting surface, and the matching structure includes a first matching surface and a second matching surface; the matching structure has a first limit angle and a second limit angle at both ends of the rotation range; when the matching structure is at the first limit angle, the first matching surface abuts against the first limiting surface, and when the matching structure is at the second limit angle, the second matching surface abuts against the second limiting surface; along the rotation direction of the matching structure, the direction of the second matching surface is opposite to the direction of the first matching surface.

12. The bracket connector according to claim 11, wherein: The bearing seat is provided with a limit groove, and the first limit surface and the second limit surface are respectively the groove walls at the circumferential ends of the limit groove; the matching structure is a boss protruding from the side wall of the shaft connection structure, and the first matching surface and the second matching surface are respectively the surfaces at the circumferential ends of the boss.

13. A photovoltaic tracking bracket, wherein: include: The support connector and at least two support modules described in any one of claims 1 to 12, wherein a single support module comprises a main beam section, a column supporting the main beam section and a driving mechanism for driving the main beam section to rotate; the two ends of the shaft connection structure are respectively connected to the ends of the main beam sections of two adjacent support modules, and the shaft connection structure allows the main beam sections of the two adjacent support modules to rotate relative to each other.

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