A photovoltaic tracking bracket

Abstract

The present invention belongs to the field of photovoltaic brackets and discloses a photovoltaic tracking bracket, including a synchronous shaft suspension structure, the synchronous shaft suspension structure including a guide rail part and a synchronous shaft fixing frame, the guide rail part including an integrally arranged clamping hoop part and a guide rail part, the guide rail part being arranged on one side of the clamping hoop part, the clamping hoop part away from the guide rail part holding the main shaft, the clamping hoop part along both ends of which are respectively provided with a first through hole, and the synchronous shaft fixing frame is movably mounted on the guide rail part; the guide rail part and the limit part are arranged opposite to each other, the two ends of the clamping part pass through the clamping hoop part, the limit part and the purlin from the first through hole from one side of the clamping hoop part in sequence and then are locked, the clamping hoop part, the clamping part and the limit part are arranged to form an annular space, and the main shaft is installed in the annular space. The present invention arranges the clamping hoop part and the guide rail part as an integral structure, and during the entire installation process, no installation adjustment is required between the guide rail part and the clamping hoop part, which not only ensures the installation accuracy of the guide rail part and avoids deformation of the synchronous shaft, but also reduces the number of parts and saves installation time.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic brackets, and in particular to a photovoltaic tracking bracket. Background Art

[0002] The photovoltaic tracking brackets currently on the market use a mechanical multi-point drive system, mostly using synchronous shafts for multi-point drive. However, as the span of the photovoltaic bracket increases, the deflection of the synchronous shaft under the action of its own weight will also increase. Therefore, the synchronous shaft needs to be hung by a synchronous shaft suspension under a large-span tracker to prevent the synchronous shaft from deflecting and deforming, causing synchronization problems.

[0003] However, most existing synchronous shafts use independent fixtures that are first fixed to the main shaft. On-site personnel then adjust the guide rail using flange nuts and tighten them to the fixture. The synchronous shaft is then rolled onto the guide rail via a synchronous shaft fixture, allowing the main shaft and synchronous shaft to rotate independently without interfering with each other. Due to errors in the machining and installation of the guide rail and fixture, multiple synchronous shaft fixtures on the same photovoltaic mount can become misaligned, causing deformation of the synchronous shaft and synchronization issues. In severe cases, this can prevent the synchronous shaft from being properly installed. Summary of the Invention

[0004] The purpose of this application is to provide a photovoltaic tracking bracket that can improve the installation accuracy of the guide rail and avoid deformation of the synchronization shaft.

[0005] The technical solutions provided in this application are as follows:

[0006] A photovoltaic tracking bracket includes a main shaft, a synchronous shaft, a mounting bracket, purlins for mounting photovoltaic modules, and a synchronous shaft suspension structure. The mounting bracket includes a limiter and an embracing member. The limiter is connected to both ends of the embracing member to form a ring to hold the main shaft tightly. The purlin is fixed to the main shaft via the mounting bracket.

[0007] The synchronous shaft suspension structure includes a guide rail and a synchronous shaft fixing frame;

[0008] The guide rail member includes an integrally arranged hoop portion and a guide rail portion, wherein the guide rail portion is arranged on one side of the hoop portion along the first direction, a portion of the hoop portion away from the guide rail portion is used to hold the main shaft, and first through holes are respectively provided at both ends of the hoop portion along the second direction;

[0009] The synchronization shaft is mounted on the synchronization shaft fixing frame, and the synchronization shaft fixing frame is movably mounted on the guide rail portion;

[0010] The guide rail part and the limiting part are arranged opposite to each other, and the two ends of the engaging part pass through the hoop part, the limiting part and the purlin in sequence from one side of the hoop part through the first through hole and are locked. The hoop part, the engaging part and the limiting part are arranged to form an annular space, and the main shaft is installed in the annular space.

[0011] In the present technical solution, the guide rail part includes a clamping hoop part and a guide rail part. The clamping hoop part has a concave surface to adapt to the main shaft contour, which can facilitate the positioning of the guide rail part during installation; the clamping hoop part is provided with a through hole for the clamping part to pass through, which can facilitate the fixed connection between the clamping hoop part and the main shaft; the guide rail part and the clamping hoop part are integrally formed, and no installation adjustment is required between the guide rail part and the clamping hoop part, which can ensure that the installation position of the guide rail part is correct, so as to ensure that the synchronization shaft of each suspension point can be in the correct position, preventing the synchronization shaft from being deformed and causing synchronization problems; the guide rail part is installed together with the purlin supporting the photovoltaic module through the installation bracket, which not only saves the structural parts for fixing the guide rail part, but also simplifies the synchronization shaft suspension structure.

[0012] In some embodiments, the clamp portion includes a main body and two ear plates, the two ear plates are respectively arranged at both ends of the main body, the main body forms a groove structure to hold the main shaft, and the first through hole is arranged at the connection between the ear plate and the main body, so that the clamp passing through the first through hole can fit the main shaft.

[0013] In the present technical solution, one end of the guide rail part can be respectively connected to one end of the main body part and the corresponding ear plate, and the other end of the guide rail part can be respectively connected to the other end of the main body part and the corresponding other ear plate, so as to improve the connection strength between the guide rail part and the clamping hoop part; the first through hole is provided at the connection between the ear plate and the main body part, so that the clamping part can fit the side wall of the main shaft after passing through the first through hole, and thus be arranged on the main shaft together with the limit part and the guide rail part, thereby improving the stability of the guide rail part installation, and thereby improving the stability of the operation of the synchronous shaft suspension structure.

[0014] In some embodiments, along the axial direction of the main shaft, the first through hole and the guide rail portion are staggered.

[0015] In this technical solution, the first through hole and the guide rail portion are staggered so that the engaging member will not interfere with the guide rail portion during installation, thereby facilitating the installation of the engaging member.

[0016] In some embodiments, the synchronization shaft fixing frame includes a roller and a bearing assembly, the roller is rollably mounted on the guide rail portion, the bearing assembly is connected to the roller, and the synchronization shaft is mounted on the bearing assembly.

[0017] In some embodiments, the bearing assembly includes a bearing seat and a spherical bearing, the bearing seat is connected to the roller, the spherical bearing is rotatably mounted on the bearing seat, and the synchronizing shaft is mounted on the spherical bearing.

[0018] In this technical solution, the synchronous shaft is supported by a spherical bearing, which can solve the problem of bearing jam during operation and prevent the synchronous shaft from getting stuck when rotating.

[0019] In some embodiments, the bearing seat includes two split bearing seats, which are counter-rotatingly connected and fixed by fasteners.

[0020] In this technical solution, the two split bearing seats are connected by counter-rotation and then fixed by bolts, and the installation process is simple and quick.

[0021] In some embodiments, the two split bearing seats each include a fixedly connected annular portion and a fixed portion, and a connecting portion is provided on both of the annular portions. After the two annular portions are rotationally connected, the two connecting portions cooperate to achieve axial fixation of the two split bearing seats. At the same time, the two fixed portions are relative and fixed by the fasteners to achieve circumferential fixation of the two split bearing seats.

[0022] In some embodiments, the connecting portion includes a first clamping portion and a second clamping portion. When the two split bearing seats are connected in counter-rotation, the first clamping portion on one split bearing seat is clamped with the second clamping portion on the other split bearing seat, and the second clamping portion on one split bearing seat is clamped with the first clamping portion on the other split bearing seat.

[0023] In some embodiments, the first clamping portion is provided with a first inclined surface, and the second clamping portion is provided with a second inclined surface adapted to the first inclined surface. When the two split bearing seats are connected in a counter-rotating manner, the first clamping portion and the second clamping portion are clamped together by the cooperation of the first inclined surface and the second inclined surface.

[0024] In some embodiments, the limiting member is provided with a second through hole, the purlin is provided with a third through hole, the first through hole, the second through hole and the third through hole are axially corresponding, and the engaging member passes through the first through hole, the second through hole and the third through hole in sequence, thereby synchronously installing the synchronous shaft suspension structure, the mounting bracket and the purlin on the main shaft.

[0025] The technical effect of this application is that by setting the clamp part and the guide rail part as an integrated structure, the entire installation process only requires the clamp part to be installed on the main shaft through the clamping parts, and no installation adjustment is required between the guide rail part and the clamp part. This not only ensures the installation accuracy of the guide rail part and avoids deformation of the synchronous shaft, but also reduces the number of parts and saves installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1 This is a schematic diagram of the structure of a photovoltaic tracking bracket provided in a specific embodiment of the present application;

[0028] Figure 2 It is a structural diagram of a synchronous shaft suspension structure provided by a specific embodiment of the present application;

[0029] Figure 3 It is a structural diagram of the guide rail member provided in a specific embodiment of the present application;

[0030] Figure 4 It is a structural schematic diagram of a synchronous shaft fixing frame provided in a specific embodiment of the present application;

[0031] Figure 5 It is an exploded schematic diagram of the synchronous shaft fixing bracket provided in a specific embodiment of the present application.

[0032] Description of Figure Numbers:

[0033] 100, main shaft; 200, synchronous shaft; 300, purlin;

[0034] 400, limit piece; 500, clutch piece;

[0035] 600, guide rail member; 610, hoop portion; 611, first through hole; 612, main body portion; 613, ear plate; 620, guide rail portion;

[0036] 700, synchronous shaft fixing frame; 710, roller; 720, bearing seat; 721, split bearing seat; 7211, first clamping portion; 7212, second clamping portion; 7213, first inclined surface; 7214, second inclined surface; 7215, annular portion; 7216, fixing portion; 7217, slot; 7218, sand leakage slot; 730, spherical bearing; 740, pin; 750, cotter pin; 760, copper tube; 770, bolt; 780, nut. DETAILED DESCRIPTION

[0037] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obstructing the description of the present application with unnecessary details.

[0038] In order to more clearly illustrate the application embodiments or technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive efforts.

[0039] To simplify the drawings, only the parts relevant to this application are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0040] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0041] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0042] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0043] In addition, in the description of this application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between related objects.

[0044] Mechanical multi-point drive means that there are multiple drive mechanisms to drive the main shaft of the photovoltaic bracket to rotate, and the multiple drive mechanisms are arranged at intervals along the axial direction of the main beam. A specific implementation method of multi-point drive is: an active drive mechanism is provided at one of the drive points of the main shaft, and a driven drive mechanism is provided at the other drive points. A synchronous shaft is provided between the active drive mechanism and the driven drive mechanism. The synchronous shaft transmission connects the active drive mechanism and the driven drive mechanism. The active drive mechanism includes a drive motor and a transmission mechanism (such as a worm gear transmission mechanism). The output end of the drive motor is connected to the input end of the transmission mechanism. The transmission mechanism is driven by the drive motor. The transmission mechanism includes multiple sets of transmission mechanisms (such as multiple sets of worm gears), thereby forming a first power output end and a second power output end. The first power output end is connected to the main shaft to drive the main shaft to rotate when the drive motor is started; the second power output end is connected to one end of the synchronous shaft, and the power is transmitted to the driven drive mechanism through the synchronous shaft; the difference between the driven drive mechanism and the active drive mechanism is that the driven drive mechanism does not have a drive motor. The synchronous shaft is connected to the input end of the driven drive mechanism to transmit power to the driven drive mechanism. The first power output end of the driven drive mechanism is connected to the main shaft, and the second power output end of the driven drive mechanism is connected to the synchronous shaft of the next section, thereby realizing the synchronous drive of the photovoltaic bracket at multiple drive points. Mechanical multi-point drive is formed by setting a drive motor and then transmitting the power of the drive motor to multiple driven drive points through the synchronous shaft to form a multi-point drive. Only one drive motor is set, which can greatly reduce costs.

[0045] The synchronous shaft is suspended under the main shaft through a synchronous shaft suspension structure. In existing photovoltaic tracking brackets, an upper clamp is generally fixed on the main shaft first, and then the two ends of the guide rail are adjusted and tightened to the upper clamp through flange nuts. Due to errors in the processing and installation of the guide rail and the upper clamp, the synchronous shaft suspended on the guide rail will not be in the correct position and will be deformed, affecting the synchronization function.

[0046] In response to the above problems, the photovoltaic tracking bracket provided by the present invention makes the clamp and guide rail of the synchronous shaft suspension structure into an integrated structure. Not only is the structure simple, with fewer parts and fewer installation hours, but there is also no need for installation between the guide rail and the clamp, so that no adjustment is required during on-site installation and it can be installed correctly, thereby ensuring that the synchronous shaft of each suspension point can be in the correct position, preventing the synchronous shaft from being deformed and affecting the synchronization function.

[0047] like Figure 1 、 Figure 2 and Figure 3As shown, in one or more embodiments, a photovoltaic tracking bracket includes a main shaft 100, a synchronous shaft 200, a purlin 300 for installing photovoltaic modules, and a mounting bracket, the mounting bracket includes a limiter 400 and an embracing member 500, the limiter 400 is connected to both ends of the embracing member 500 and forms a ring member to hold the main shaft 100, and the purlin 300 is fixed to the main shaft 100 through the mounting bracket. The photovoltaic tracking bracket also includes a synchronous shaft suspension structure, the synchronous shaft suspension structure includes a guide rail member 600 and a synchronous shaft fixing frame 700; the guide rail member 600 includes an integrally arranged hoop portion 610 and a guide rail portion 620, the guide rail portion 620 is arranged on one side of the hoop portion 610 along the first direction, the portion of the hoop portion 610 away from the guide rail portion 620 is used to hold the main shaft 100, and the hoop portion 610 is provided with first through holes 611 at both ends along the second direction, wherein, as Figure 1 As shown, the first direction is set perpendicular to the length direction of the main shaft 100, the second direction is set along the length direction of the purlin 300, and the first direction is perpendicular to the second direction; the synchronous shaft 200 is installed on the synchronous shaft fixing frame 700, and the synchronous shaft fixing frame 700 is movably installed on the guide rail part 620, so that the synchronous shaft 200 can move relative to the main shaft 100; the guide rail part 600 and the limit part 400 are arranged opposite to each other, and the two ends of the engaging part 500 pass through the hoop part 610, the limit part 400 and the purlin 300 in sequence from the first through hole 611 from one side of the hoop part 610 and are locked. The hoop part 610, the engaging part 500 and the limit part 400 are arranged to form an annular space, and the main shaft 100 is installed in the annular space.

[0048] When the guide rail member 600 is installed on the main shaft 100, the clamping part 610 of the guide rail member 600 clamps the main shaft 100 tightly. The shape of the clamping part 610 is adapted to the outer shape of the main shaft 100, and the inner diameter of the clamping part 610 is adapted to the outer diameter of the main shaft 100, so that the clamping part 610 is close to the main shaft 100, which not only facilitates the installation and positioning of the guide rail member 600 and improves the installation accuracy of the guide rail member 600, but also improves the connection stability between the clamping part 610 and the main shaft 100, and avoids the reduction of connection stability due to a large gap between the clamping part 610 and the main shaft 100.

[0049] When the purlin 300 is secured to the main shaft 100 via the mounting bracket, the mounting bracket's stopper 400 is positioned between the purlin 300 and the main shaft 100. One side of the stopper 400 abuts the purlin 300, while the other side conforms to the top surface profile of the main shaft 100. Both ends of the mounting bracket's clasping member 500 pass through the stopper 400 and connect to the purlin 300, forming a ring that tightly embraces the main shaft 100, thereby securing the purlin 300 to the main shaft 100. The provision of the stopper 400 prevents the purlin 300 from rotating circumferentially about the main shaft 100, thereby preventing the photovoltaic module from shifting.

[0050] Furthermore, the limit member 400 is also provided with a pad for abutting the main shaft 100. The pad fits the top surface contour of the main shaft 100, increasing the contact area between the main shaft 100 and the limit member 400, thereby effectively reducing the local stress on the main shaft 100 and improving the connection stability between the purlin 300 and the main shaft 100.

[0051] A first through hole 611 is provided on the clamping part 610, and the guide rail member 600 is fixed to the main shaft 100 through the first through hole 611 by the clamping part 500 of the mounting bracket, and the purlin 300 is fixed to the main shaft 100 by the limiting part 400 of the mounting bracket, that is, the clamping part 500 passes through the first through hole 611 on the clamping part 610 in sequence, and passes through the through holes on the limiting part 400 and the purlin 300, and then is locked to the purlin 300, so as to synchronously fix the guide rail member 600 and the purlin 300 to the main shaft 100, which not only saves the structural parts for fixing the guide rail member 600, but also simplifies the synchronous shaft suspension structure.

[0052] The guide rail 620 is used to suspend the synchronous shaft mounting bracket 700. The synchronous shaft mounting bracket 700 is movably mounted on the guide rail 620, and the synchronous shaft 200 is mounted on the synchronous shaft mounting bracket 700, allowing the synchronous shaft 200 to move relative to the main shaft 100. The guide rail 620 and the clamping hoop 610 are integrally formed. When the clamping hoop 610 is secured to the main shaft 100 via the clamping member 500, the guide rail 620 is also secured to the main shaft 100. During on-site installation, the guide rail 620 does not require any adjustment to ensure correct installation. This ensures that the synchronous shaft 200 at each suspension point is correctly positioned, preventing deformation of the synchronous shaft 200 that could affect synchronization.

[0053] In this embodiment, the clamp portion 610 and the guide rail portion 620 are combined into one. During the entire installation process, it is only necessary to install the clamp portion 610 on the main shaft 100 through the clamping member 500. No installation adjustment is required between the guide rail portion 620 and the clamp portion 610. This not only ensures the installation accuracy of the guide rail portion 620 and avoids deformation of the synchronous shaft 200, but also reduces the number of parts and saves installation time.

[0054] In some embodiments, the limiting member 400 is provided with a second through hole, and the purlin 300 is provided with a third through hole. The first through hole, the second through hole and the third through hole are axially corresponding, that is, the line connecting the center points of the first through hole 611, the second through hole and the third through hole is parallel to the cross section of the main shaft 100, so that the embracing member 500 passes through the first through hole 611, the second through hole and the third through hole in sequence, and is locked to the purlin 300, so that the synchronous shaft suspension structure, the mounting bracket and the purlin 300 are synchronously installed on the main shaft 100.

[0055] In some embodiments, as Figure 3As shown, the clamping part 610 includes a main body 612 and two ear plates 613, wherein one ear plate 613 is arranged at one end of the main body 612, and the other ear plate 613 is arranged at the other end of the main body 612. A groove structure is formed on the main body 612, and the groove structure adapts to the contour of the main shaft 100 so that the main body 612 can hold the main shaft 100. The first through hole 611 on the clamping part 610 is arranged at the connection between the ear plate 613 and the main body 612, so that the clamping piece 500 passing through the first through hole 611 can fit the main shaft.

[0056] In this embodiment, both ends of the main body portion 612 extend to both sides of the main shaft 100 in the radial direction, respectively, increasing the area of ​​the main shaft 100 wrapped by the clamping portion 610, which not only increases the contact area between the clamping portion 610 and the main shaft 100, thereby increasing the friction and anti-slip ability between the clamping portion 610 and the main shaft 100, and improving the connection stability between the clamping portion 610 and the main shaft 100; but also can make the stress more evenly distributed on the main shaft 100 and the clamping portion 610, reduce the problem of excessive local stress, and thus reduce the risk of structural damage caused by stress concentration.

[0057] The two ear plates 613 are respectively located at the two ends of the main body 612 along the second direction. The two ear plates 613 are symmetrically arranged relative to the main axis 100, that is, the entire clamp part 610 is symmetrically arranged relative to the main axis 100, so that the clamp part 610 can evenly distribute the load and avoid structural deformation or loosening due to uneven force.

[0058] A first through hole 611 is respectively provided at both ends of the clamping part 610. The first through hole 611 on the clamping part 610 is provided at the connection between the ear plate 613 and the main body 612, and the first through hole 611 extends to a part of the main body 612, so that after the clamping part 500 passes through the first through hole 611, it can fit with the side wall of the main shaft 100, thereby increasing the contact area and friction force between the clamping part 500 and the main shaft 100, and improving the stability of the connection between the clamping part 500 and the main shaft 100.

[0059] In one example, the engaging member 500 is a U-shaped bolt, the two ends of which pass through the first through hole 611, the second through hole, and the third through hole, respectively. The U-shaped bolt is tightened by a nut, so that the U-shaped bolt (engaging member 500), the limiting member 400, and the guide rail member 600 are collectively clamped to the main shaft 100, thereby synchronously fixing the synchronous shaft suspension structure, the mounting bracket, and the purlin 300 to the main shaft 100. The groove portion of the U-shaped bolt fits into and clamps the clamp portion 610, stably fixing the clamp portion 610 to the main shaft 100. Furthermore, the portion of the U-shaped bolt that contacts the main shaft 100 is configured to be flat, so as to increase the contact area between the U-shaped bolt and the side wall of the main shaft 100, thereby making the connection between the U-shaped bolt and the main shaft 100 more stable.

[0060] In other examples, the U-shaped bolt can also be replaced with two long bolts. The guide rail member 600 and the purlin 300 can also be synchronously fixed to the main shaft 100 by the two long bolts. However, compared with the long bolt, the U-shaped bolt not only has fewer parts but also is more convenient to install. In addition, when the main shaft 100 is a square tube with an R-shaped arc surface, the U-shaped bolt passing through the first through hole 611 can be close to the R-shaped arc surface of the main shaft 100, making the connection between the U-shaped bolt and the main shaft 100 more stable.

[0061] In some embodiments, along the axial direction of the spindle 100, the first through-hole 611 and the guide rail portion 620 are staggered. That is, the projection of the guide rail portion 620 on the spindle 100 and the projection of the first through-hole 611 on the spindle 100 are located on different radial planes of the spindle 100. The staggered arrangement of the first through-hole 611 and the guide rail portion 620, and the staggered arrangement of the mounting position of the clasping member 500 and the guide rail portion 620, allows the clasping member 500 to be easily inserted into the first through-hole 611 of the clamping hoop portion 610 and secured to the spindle 100. This prevents interference between the clasping member 500 and the guide rail portion 620 during installation, making installation of the clasping member 500 more convenient and quicker.

[0062] In some embodiments, as Figure 4 and Figure 5 As shown, the synchronous shaft fixing frame 700 includes a roller 710 and a bearing assembly. The roller 710 is rotatably mounted on the guide rail portion 620 . The bearing assembly is connected to the roller 710 . The synchronous shaft 200 is mounted on the bearing assembly so that the synchronous shaft 200 can move relative to the main shaft 100 .

[0063] The bearing assembly includes a bearing seat 720 and a spherical bearing 730. A roller 710 is rollably mounted on the guide rail 620. The bearing seat 720 is connected to the roller 710. The spherical bearing 730 is rotatably mounted on the bearing seat 720. The synchronous shaft 200 is mounted on the spherical bearing 730. The synchronous shaft 200 is suspended from the guide rail 620 via the synchronous shaft mounting bracket 700. During operation, the roller 710 of the synchronous shaft mounting bracket 700 can roll on the guide rail 620, allowing the synchronous shaft 200 to move relative to the main shaft 100. This reduces deflection and deformation of the synchronous shaft 200 during operation, reducing the risk of cracking the synchronous shaft 200. The synchronous shaft 200 is mounted on the bearing seat 720 via the spherical bearing 730. The spherical bearing 730 can rotate relative to the bearing seat 720 to enable the synchronous shaft 200 to rotate.

[0064] It should be noted that, in addition to adopting the structure of this embodiment, the synchronization shaft fixing frame 700 can also adopt the existing structure to implement the rotation of the synchronization shaft 200. For example, a bearing can be directly set in the roller, and the roller can be used as a bearing seat. The synchronization shaft 200 is installed on the bearing, and the synchronization shaft 200 can rotate relative to the roller through the bearing.

[0065] In this embodiment, roller 710 is mounted on top of bearing seat 720. Bearing seat 720 has two mounting holes on top, and roller 710 is positioned between the two mounting holes. Roller 710 and bearing seat 720 are connected via a pin 740 and a cotter pin 750. Furthermore, a copper tube 760 may be provided between pin 740 and roller 710 to improve wear resistance.

[0066] The spherical bearing 730 is rotatably mounted in the bearing seat 720. The spherical bearing 730 has a through hole that matches the cross-sectional shape and size of the synchronous shaft 200. The synchronous shaft 200 is fixedly mounted in the through hole of the spherical bearing 730. There is a gap between the spherical bearing 730 and the bearing seat 720, so that the synchronous shaft 200 and the spherical bearing 730 can rotate relative to the bearing seat 720. Most existing synchronous shaft fixing frames use conventional non-spherical bearings. When the synchronous shaft 200 rotates with deformation and deflection, it is prone to jamming. In this embodiment, the bearing uses a spherical bearing 730. The synchronous shaft 200 is supported by the spherical bearing 730, which can achieve stepless adaptation of the direction change of the synchronous shaft 200 without jamming, thereby solving the problem of bearing jamming during operation.

[0067] Further, such as Figure 5 As shown, the bearing seat 720 includes two split bearing seats 721. The two split bearing seats 721 are counter-rotatingly connected and secured by fasteners, which simplifies the installation of the bearing seat 720. The counter-rotating connection of the two split bearing seats 721 means that after the two split bearing seats 721 are docked, they are rotated in opposite directions to connect the two split bearing seats 721. For example, after the two split bearing seats 721 are docked, one split bearing seat 721 is rotated clockwise while the other split bearing seat 721 is rotated counterclockwise to rotate the two split bearing seats 721 into place. Finally, the two split bearing seats 721 are locked together using fasteners, which can be bolts, screws, etc.

[0068] In this embodiment, both split bearing seats 721 are complete annular structures. The inner ring shape of the bearing seat 720 matches the shape of the spherical bearing 730. The inner diameter of the inner ring of the split bearing seat 721 is larger than the outer diameter of the spherical bearing 730, creating a gap between the spherical bearing 730 and the bearing seat 720, allowing the spherical bearing 730 to rotate relative to the bearing seat 720. During installation, the spherical bearing 730 is placed in one split bearing seat 721, and then the other split bearing seat 721 is fitted onto the spherical bearing 730. The two split bearing seats 721 are then rotated to connect them together. Finally, the two split bearing seats 721 are fastened with bolts to complete the installation of the spherical bearing 730 and the bearing seat 720.

[0069] In this embodiment, the two split bearing seats 721 have the same structure and can be formed using the same mold to reduce mold costs. Of course, if cost is not a concern, the structures of the two split bearing seats 721 can also be different.

[0070] Furthermore, based on the above embodiment, Figure 5 As shown, the two split bearing seats 721 each include a fixedly connected annular portion 7215 and a fixed portion 7216. A connecting portion is provided on the two annular portions 7215. After the two annular portions 7215 are rotated together, the two connecting portions cooperate to achieve axial fixation of the two split bearing seats 721. At the same time, the two fixed portions 7216 are relative and fixed by a bolt pair to achieve circumferential fixation of the two split bearing seats 721.

[0071] The annular portions 7215 of the two split bearing seats 721 are both complete annular structures, and the two annular portions 7215 can be connected in a counter-rotating manner. After the two annular portions 7215 are connected in a counter-rotating manner, the connecting portions on the two annular portions 7215 cooperate with each other to achieve axial fixation of the two split bearing seats 721; at this time, the two fixing portions 7216 are exactly opposite to each other, and the two fixing portions 7216 are locked by a bolt pair to achieve circumferential locking of the two split bearing seats 721, so as to achieve fixed assembly of the two split bearing seats 721.

[0072] In one embodiment, Figure 4 and Figure 5 As shown, the connection parts on the two split bearing seats 721 each include a first clamping part 7211 and a second clamping part 7212. When the two split bearing seats 721 are connected in a counter-rotating manner, the first clamping part 7211 on one split bearing seat 721 is clamped with the second clamping part 7212 on the other split bearing seat 721, and the second clamping part 7212 on one split bearing seat 721 is clamped with the first clamping part 7211 on the other split bearing seat 721, so that the two split bearing seats 721 are fixed to each other in the axial direction, thereby increasing the strength of the bearing seat 720 to resist axial force. Then, the two split bearing seats 721 are locked by bolts 770 to fix the two split bearing seats 721 in the circumferential direction, thereby achieving the locking of the two split bearing seats 721. The shape and size of the first clamping part 7211 and the second clamping part 7212 on the same split bearing seat 721 can be the same or different.

[0073] Further, such as Figure 4As shown, the first clamping portion 7211 is provided with a first inclined surface 7213, and the second clamping portion 7212 is provided with a second inclined surface 7214 that matches the first inclined surface 7213. When the two split bearing seats 721 are counter-rotatingly connected, the first clamping portion 7211 and the second clamping portion 7212 are clamped together by the cooperation of the first inclined surface 7213 and the second inclined surface 7214. When the two split bearing seats 721 are counter-rotatingly connected, the first inclined surface 7213 and the second inclined surface 7214 can both serve as guides, making it easier to clamp the first clamping portion 7211 on one split bearing seat 721 with the second clamping portion 7212 on the other split bearing seat 721, and making it easier to clamp the second clamping portion 7212 on one split bearing seat 721 with the first clamping portion 7211 on the other split bearing seat 721, thereby achieving axial fixation of the two split bearing seats 721, reducing assembly difficulty, and saving time and effort.

[0074] In other embodiments, the connecting portion may also be a threaded structure or a snap-fit ​​structure, and the two split bearing seats 721 may also be axially fixed after being rotated together by means of threads or snap-fits to increase the strength of the bearing seat 720 against axial force, and then the two split bearing seats 721 may be locked by bolts, which may also achieve fixed assembly of the two split bearing seats 721.

[0075] Furthermore, bolt holes and clamping grooves 7217 are provided on the two fixing parts 7216. After the two annular parts 7215 are rotated to the first clamping part 7211 and the second clamping part 7212 to be clamped and fixed, the bolt 770 of the bolt pair is passed through the bolt holes on the two fixing parts 7216, and then the nut 780 of the bolt pair is installed on the bolt 770, and the nut 780 is clamped in the clamping groove 7217 of one of the fixing parts 7216. The clamping groove 7217 has a stopping effect on the nut 780, which can prevent the nut 780 from rotating in the clamping groove 7217. During installation, it is only necessary to tighten the bolt 770 on one side. There are fewer bolt installation nodes, and the installation is convenient and quick, saving time and effort.

[0076] Further, such as Figure 5 As shown, the annular portion 7215 of the split bearing seat 721 is provided with a sand leakage groove 7218, which can greatly reduce the accumulation of wind sand and rainwater in the bearing seat 720, reduce the impact of wind sand and rainwater on the spherical bearing 730, and reduce the wear of dust, wind sand, impurities and other particles on the spherical bearing 730, thereby increasing the service life of the spherical bearing 730.

[0077] To sum up, in the present application, the clamp part 610 is combined with the guide rail part 620 and formed as one piece. No adjustment is required during on-site installation and they can be correctly installed, thereby ensuring that the synchronous shaft 200 at each suspension point is in the correct position; the guide rail part 600 is installed together with the purlin 300 supporting the photovoltaic module through the installation bracket, which simplifies the synchronous shaft suspension structure. The synchronous shaft 200 is supported by the spherical bearing 730, and the direction of the synchronous shaft 200 can be steplessly adapted without getting stuck; in addition, the guide rail part 600, the spherical bearing 730 and the split bearing seat 720 can be pre-installed as a whole, with fewer structural components. During on-site installation, it is only necessary to fix the guide rail part 600 to the purlin 300 with U-bolts to complete the installation of the synchronous shaft suspension structure. The installation is convenient and quick, saving the installation time of on-site workers.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0079] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be considered as the scope of protection of the present application.

Claims

1. A photovoltaic tracking bracket, comprising a main shaft, a synchronous shaft, a mounting bracket, and purlins for mounting photovoltaic modules, wherein the mounting bracket comprises a stopper and an embracing member, wherein the stopper is connected to both ends of the embracing member to form a ring to hold the main shaft tightly, and the purlin is fixed to the main shaft through the mounting bracket, characterized in that: Also includes: A synchronous shaft suspension structure, including a guide rail and a synchronous shaft fixing frame; The guide rail member includes an integrally arranged hoop portion and a guide rail portion, wherein the guide rail portion is arranged on one side of the hoop portion along the first direction, a portion of the hoop portion away from the guide rail portion is used to hold the main shaft, and first through holes are respectively provided at both ends of the hoop portion along the second direction; The synchronization shaft is mounted on the synchronization shaft fixing frame, and the synchronization shaft fixing frame is movably mounted on the guide rail portion; The guide rail member and the limiting member are arranged opposite to each other, and both ends of the engaging member pass through the hoop portion, the limiting member and the purlin in sequence from one side of the hoop portion through the first through hole and are then locked. The hoop portion, the engaging member and the limiting member form an annular space, and the main shaft is installed in the annular space; The hoop portion includes a main body portion, and the main body portion forms a groove-shaped structure to hold the main shaft.

2. A photovoltaic tracking bracket according to claim 1, characterized in that: The clamping part also includes two ear plates, which are respectively arranged at the two ends of the main body. The first through hole is arranged at the connection between the ear plate and the main body, so that the clamping part passing through the first through hole can fit the main shaft.

3. A photovoltaic tracking bracket according to claim 2, characterized in that: Along the axial direction of the main shaft, the first through hole and the guide rail portion are staggered.

4. A photovoltaic tracking bracket according to any one of claims 1 to 3, characterized in that: The synchronous shaft fixing frame includes a roller and a bearing assembly. The roller is rollably mounted on the guide rail portion. The bearing assembly is connected to the roller. The synchronous shaft is mounted on the bearing assembly.

5. The photovoltaic tracking bracket according to claim 4, characterized in that: The bearing assembly includes a bearing seat and a spherical bearing. The bearing seat is connected to the roller. The spherical bearing is rotatably mounted on the bearing seat. The synchronizing shaft is mounted on the spherical bearing.

6. The photovoltaic tracking bracket according to claim 5, characterized in that: The bearing seat includes two split bearing seats, which are counter-rotatingly connected and fixed by fasteners.

7. The photovoltaic tracking bracket according to claim 6, characterized in that: The two split bearing seats each include a fixedly connected annular portion and a fixed portion, and a connecting portion is provided on each of the two annular portions. After the two annular portions are rotationally connected, the two connecting portions cooperate to achieve axial fixation of the two split bearing seats. At the same time, the two fixed portions are relative and fixed by the fasteners to achieve circumferential fixation of the two split bearing seats.

8. The photovoltaic tracking bracket according to claim 7, characterized in that: The connecting portion includes a first clamping portion and a second clamping portion. When the two split bearing seats are connected in counter-rotation, the first clamping portion on one split bearing seat is clamped with the second clamping portion on the other split bearing seat, and the second clamping portion on one split bearing seat is clamped with the first clamping portion on the other split bearing seat.

9. The photovoltaic tracking bracket according to claim 8, characterized in that: The first clamping portion is provided with a first inclined surface, and the second clamping portion is provided with a second inclined surface adapted to the first inclined surface. When the two split bearing seats are connected in counter-rotation, the first clamping portion and the second clamping portion are clamped together by the cooperation of the first inclined surface and the second inclined surface.

10. The photovoltaic tracking bracket according to claim 1, characterized in that: The limiting member is provided with a second through hole, and the purlin is provided with a third through hole. The first through hole, the second through hole and the third through hole are axially corresponding to each other. The engaging member passes through the first through hole, the second through hole and the third through hole in sequence, thereby synchronously installing the synchronous shaft suspension structure, the mounting bracket and the purlin on the main shaft.

Images