Photovoltaic tracking support

Abstract

The invention belongs to the field of photovoltaic supports, and discloses a photovoltaic tracking support which comprises a synchronizing shaft hanging structure, the synchronizing shaft hanging structure comprises a guide rail piece and a synchronizing shaft fixing frame, the guide rail piece comprises a hoop part and a guide rail part which are integrally arranged, the guide rail part is arranged on one side of the hoop part, and the part, away from the guide rail part, of the hoop part holds a main shaft. First through holes are formed in the two ends of the hoop part respectively, and the synchronizing shaft fixing frame is movably installed on the guide rail part. The guide rail piece and the limiting piece are oppositely arranged, the two ends of the cohesion piece sequentially penetrate through the hoop part, the limiting piece and the purline from one side of the hoop part through the first through hole and then are locked, the hoop part, the cohesion piece and the limiting piece define an annular space, and the main shaft is installed in the annular space. The hoop part and the guide rail part are arranged to be of the integrated structure, installation adjustment is not needed between the guide rail part and the hoop part in the whole installation process, the installation precision of the guide rail part is guaranteed, deformation of the synchronizing shaft is avoided, the number of parts is reduced, and the installation working time is saved.

Description

Technical Field

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

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

[0003] However, most of the existing synchronous shafts are first fixed to the main shaft by independent fixing parts, and then on-site personnel limit and tighten the guide rail parts to the fixing parts through flange nuts. The synchronous shaft is installed on the guide rail parts by rolling through a synchronous shaft fixing frame, so that the main shaft and the synchronous shaft can rotate independently without interference. Due to the errors in the processing and installation of the guide rail parts and the fixing parts, the positions of multiple synchronous shaft fixing frames on the same photovoltaic bracket cannot be aligned, resulting in deformation of the synchronous shaft and synchronization problems, and in severe cases, the synchronous shaft cannot be installed normally. Summary of the Invention

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

[0005] The technical solution provided by this application is 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 limiting member and a clamping member. The limiting member is connected to both ends of the clamping member to form an annular member to tightly hold the main shaft, and the purlins are fixed to the main shaft through the mounting bracket;

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

[0008] The guide rail member includes a hoop portion and a guide rail portion integrally provided. The guide rail portion is disposed on one side of the hoop portion along a first direction. The 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 a second direction;

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

[0010] The guide rail member and the limiting member are arranged opposite to each other. Both ends of the clamping member pass through the clamping portion, the limiting member and the purlin in sequence from one side of the clamping portion through the first through hole, and then are locked. An annular space is formed by enclosing the clamping portion, the clamping member and the limiting member, and the main shaft is installed in the annular space.

[0011] In this technical solution, the guide rail member includes a clamping portion and a guide rail portion. The clamping portion has a concave surface to adapt to the contour of the main shaft, which is convenient for positioning the guide rail member during installation; a through hole for the clamping member to pass through is provided on the clamping portion, which is convenient for the fixed connection between the clamping portion and the main shaft; the guide rail portion and the clamping portion are integrally formed, and no further installation adjustment is required between the guide rail portion and the clamping portion, which can ensure the correct installation position of the guide rail portion, so as to ensure that the synchronous shafts of all suspension points can be in the correct positions and prevent synchronous problems caused by deformation of the synchronous shaft; the guide rail member is installed together with the purlin supporting the photovoltaic module through the mounting bracket, which not only saves the structural members for fixing the guide rail member, but also simplifies the synchronous shaft suspension structure.

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

[0013] In this technical solution, one end of the guide rail portion can be respectively connected to one end of the main body portion and the corresponding ear plate, and the other end of the guide rail portion can be respectively connected to the other end of the main body portion and the corresponding other ear plate to improve the connection strength between the guide rail portion and the clamping portion; the first through hole is arranged at the connection between the ear plate and the main body portion, so that after the clamping member passes through the first through hole, it can fit the side wall of the main shaft, so as to enclose the main shaft together with the limiting member and the guide rail member, improve the installation stability of the guide rail member, and further improve the operation stability 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 arranged staggeredly.

[0015] In this technical solution, the first through hole and the guide rail portion are arranged staggeredly, so that the clamping member will not interfere with the guide rail portion during installation, which is convenient for the installation of the clamping member.

[0016] In some embodiments, the synchronous shaft fixing bracket includes a roller and a bearing assembly. The roller is rotatably installed on the guide rail portion. The bearing assembly is connected to the roller, and the synchronous shaft is installed in the bearing assembly.

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

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

[0019] In some embodiments, the bearing housing includes two split bearing housings, and the two split bearing housings are connected by counter-rotation and fixed by fasteners.

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

[0021] In some embodiments, each of the two split bearing housings includes a fixed annular portion and a fixed portion. Connecting portions are provided on both of the two annular portions. After the two annular portions are connected by counter-rotation, the two connecting portions cooperate to achieve axial fixation of the two split bearing housings. At the same time, the two fixed portions face each other and are fixed by the fasteners to achieve circumferential fixation of the two split bearing housings.

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

[0023] In some embodiments, a first inclined surface is provided on the first clamping portion, and a second inclined surface adapted to the first inclined surface is provided on the second clamping portion. When the two split bearing housings are connected by counter-rotation, the first clamping portion and the second clamping portion are clamped through 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 clamping member sequentially passes through the first through hole, the second through hole and the third through hole, so as to synchronously mount the synchronizing shaft suspension structure, the mounting bracket and the purlin on the main shaft.

[0025] The technical effect of the present application lies in that by setting the hoop part and the guide rail part as an integral structure, during the entire installation process, it only requires installing the hoop part on the main shaft through the clamping member, and there is no need for installation adjustment between the guide rail part and the hoop part. This can not only ensure the installation accuracy of the guide rail part, avoid deformation of the synchronous shaft, but also reduce the number of components and save installation man-hours. Description of the Drawings

[0026] The following further elaborates on the present application in conjunction with the drawings and specific embodiments:

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

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

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

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

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

[0032] Explanation of the Reference Numerals in the Drawings:

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

[0034] 400, limiting member; 500, clamping member;

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

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

[0037] In the following description, specific details such as specific system architectures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also 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 unnecessary details from interfering with the description of the present application.

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

[0039] To make the drawings concise, only the parts related to the present application are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, for components with the same structure or function in some drawings, only one of them is schematically shown, or only one of them is labeled. In this document, "one" not only means "only this one" but also means "more than one" situation.

[0040] It should also be further understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0041] In this document, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back, etc.) when describing the structures and movements of various components is not absolute but relative, and is not used to limit the direction of the product during actual use.

[0043] In addition, in the description of the present 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 rotation of the main shaft of the photovoltaic support, and the multiple drive mechanisms are arranged at intervals along the axial direction of the main beam. A specific implementation of multi-point drive is as follows: an active drive mechanism is provided at one of the drive points of the main shaft, and driven drive mechanisms are provided at the remaining drive points. A synchronizing shaft is provided between the active drive mechanism and the driven drive mechanisms, and the synchronizing shaft is in transmission connection with the active drive mechanism and the driven drive mechanisms. The active drive mechanism includes a drive motor and a transmission mechanism (such as a worm and worm gear transmission mechanism). The output end of the drive motor is connected to the input end of the transmission mechanism. Driven by the drive motor, the transmission mechanism is driven to transmit. The transmission mechanism includes multiple groups of transmission mechanisms (such as multiple groups of worm and 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 in transmission connection with one end of the synchronizing shaft, and the power is transmitted to the driven drive mechanism through the synchronizing 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, and the synchronizing shaft is in transmission connection with the input end of the driven drive mechanism, thereby transmitting the 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 in transmission connection with the synchronizing shaft of the next section, thereby realizing the synchronous drive of the photovoltaic support at multiple drive points. Mechanical multi-point drive sets one drive motor, and then transmits the power of the drive motor to multiple driven drive points through the synchronizing shaft to form multi-point drive. Only setting one drive motor can greatly reduce the cost.

[0045] The synchronizing shaft is suspended below the main shaft through a synchronizing shaft suspension structure. In the existing photovoltaic tracking support, generally, an upper hoop is fixedly installed on the main shaft first, and then the two ends of the guide rail member are limited and adjusted through flange nuts and tightened on the upper hoop. Due to the errors in the processing and installation of the guide rail member and the upper hoop, the synchronizing shaft suspended on the guide rail member will be out of the correct position and deformed, affecting the synchronous function.

[0046] In view of the above problems, for the photovoltaic tracking support provided by the present invention, the hoop and the guide rail of the synchronizing shaft suspension structure are made into an integral structure. It not only has a simple structure, few components, and saves installation man-hours, but also there is no need to install between the guide rail and the hoop, so that no adjustment is required during on-site installation, and it can be correctly installed, thereby ensuring that the synchronizing shafts at each suspension point can be in the correct positions and preventing the synchronizing shaft from being deformed and affecting the synchronous function.

[0047] Such as Figure 1 、 Figure 2 And Figure 3As shown, in one or more embodiments, a photovoltaic tracking bracket includes a main shaft 100, a synchronization shaft 200, purlins 300 for installing photovoltaic modules, and a mounting bracket. The mounting bracket includes a limiting member 400 and a clamping member 500. The limiting member 400 is connected to both ends of the clamping member 500 to form an annular member for tightly holding the main shaft 100, and the purlin 300 is fixed to the main shaft 100 through the mounting bracket. The photovoltaic tracking bracket further includes a synchronization shaft suspension structure, and the synchronization shaft suspension structure includes a guide rail member 600 and a synchronization shaft fixing bracket 700; the guide rail member 600 includes an integrally provided hoop portion 610 and a guide rail portion 620; the guide rail portion 620 is disposed on one side of the hoop portion 610 along a first direction, and the portion of the hoop portion 610 away from the guide rail portion 620 is used to hold the main shaft 100. First through holes 611 are respectively provided at both ends of the hoop portion 610 along a second direction. Wherein, as Figure 1 shown, the first direction is perpendicular to the length direction of the main shaft 100, the second direction is along the length direction of the purlin 300, and the first direction is perpendicular to the second direction; the synchronization shaft 200 is installed on the synchronization shaft fixing bracket 700, and the synchronization shaft fixing bracket 700 is movably installed on the guide rail portion 620 so that the synchronization shaft 200 can move relative to the main shaft 100; the guide rail member 600 is disposed opposite to the limiting member 400, and both ends of the clamping member 500 sequentially pass through the hoop portion 610, the limiting member 400, and the purlin 300 from one side of the hoop portion 610 through the first through holes 611 and then are locked. An annular space is formed by enclosing the hoop portion 610, the clamping member 500, and the limiting member 400, 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 hoop portion 610 of the guide rail member 600 tightly holds the main shaft 100. The shape of the hoop portion 610 is adapted to the outer shape of the main shaft 100, and the inner diameter of the hoop portion 610 is adapted to the outer diameter of the main shaft 100, so that the hoop portion 610 closely adheres to the main shaft 100. This not only facilitates the installation and positioning of the guide rail member 600, improves the installation accuracy of the guide rail member 600, but also improves the connection stability between the hoop portion 610 and the main shaft 100, and avoids reducing the connection stability due to a large gap between the hoop portion 610 and the main shaft 100.

[0049] When the purlin 300 is fixed to the main shaft 100 through the mounting bracket, the limiting member 400 of the mounting bracket is disposed between the purlin 300 and the main shaft 100. One side of the limiting member 400 abuts against the purlin 300, and the other side is adapted to the top surface contour of the main shaft 100. Both ends of the clamping member 500 of the mounting bracket pass through the limiting member 400 to be connected to the purlin 300 and form an annular member to tightly hold the main shaft 100, thereby fixing and installing the purlin 300 on the main shaft 100. By providing the limiting member 400, it is possible to prevent the purlin 300 from rotating circumferentially along the main shaft 100, and further avoid the deviation of the position of the photovoltaic module.

[0050] Further, the limiting member 400 is also provided with a backing plate for abutting against the main shaft 100. The backing plate fits the top surface contour of the main shaft 100, increasing the contact area between the main shaft 100 and the limiting 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] The hoop portion 610 is provided with a first through hole 611. The guide rail member 600 is fixed to the main shaft 100 through the clamping member 500 of the mounting bracket passing through the first through hole 611, and the purlin 300 is fixed to the main shaft 100 through the limiting member 400 of the mounting bracket. That is, the clamping member 500 sequentially passes through the first through hole 611 on the hoop portion 610, and passes through the through holes on the limiting member 400 and the purlin 300, and then is locked to the purlin 300 to synchronously fix the guide rail member 600 and the purlin 300 to the main shaft 100. This not only saves the structural members for fixing the guide rail member 600, but also simplifies the synchronous shaft suspension structure.

[0052] The guide rail portion 620 is used for suspending the synchronous shaft fixing bracket 700. The synchronous shaft fixing bracket 700 is movably mounted on the guide rail portion 620, and the synchronous shaft 200 is mounted on the synchronous shaft fixing bracket 700 so that the synchronous shaft 200 can move relative to the main shaft 100. The guide rail portion 620 and the hoop portion 610 are integrally formed. When the hoop portion 610 is fixed to the main shaft 100 through the clamping member 500, the guide rail portion 620 is also fixed to the main shaft 100. During on-site installation, the guide rail portion 620 does not need to be adjusted and installed, which can ensure the correct installation of the guide rail portion 620 and ensure that the synchronous shafts 200 at each suspension point are all in the correct positions to prevent the synchronous shaft 200 from being deformed and affecting the synchronous function.

[0053] In this embodiment, the hoop portion 610 and the guide rail portion 620 are combined into one body. During the entire installation process, only the hoop portion 610 needs to be installed on the main shaft 100 through the clamping member 500, and no installation adjustment is required between the guide rail portion 620 and the hoop portion 610. This can not only ensure the installation accuracy of the guide rail portion 620, avoid deformation of the synchronous shaft 200, but also reduce the number of parts and save installation man-hours.

[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 center point connection line 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 clamping member 500 sequentially passes through the first through hole 611, the second through hole and the third through hole and is locked to the purlin 300, thereby synchronously installing the synchronous shaft suspension structure, the mounting bracket and the purlin 300 on the main shaft 100.

[0055] In some embodiments, such as Figure 3As shown, the hoop part 610 includes a main body part 612 and two ear plates 613. One ear plate 613 is disposed at one end of the main body part 612, and the other ear plate 613 is disposed at the other end of the main body part 612. A groove-like structure is formed on the main body part 612, and the groove-like structure is adapted to the contour of the main shaft 100 so that the main body part 612 holds the main shaft 100. The first through hole 611 on the hoop part 610 is disposed at the connection between the ear plate 613 and the main body part 612 so that the holding member 500 passing through the first through hole 611 can fit against the main shaft.

[0056] In this embodiment, both ends of the main body part 612 extend to both sides of the main shaft 100 along the radial direction, increasing the area of the hoop part 610 wrapping the main shaft 100. This not only increases the contact area between the hoop part 610 and the main shaft 100, thereby increasing the frictional force and anti-slip ability between the hoop part 610 and the main shaft 100 and improving the connection stability between the hoop part 610 and the main shaft 100; but also enables the stress to be more evenly distributed on the main shaft 100 and the hoop part 610, reducing the problem of excessive local stress, thereby reducing the risk of structural damage caused by stress concentration.

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

[0058] One first through hole 611 is respectively disposed at both ends of the hoop part 610. The first through hole 611 on the hoop part 610 is disposed at the connection between the ear plate 613 and the main body part 612, and the first through hole 611 extends to a part of the area of the main body part 612 so that after the holding member 500 passes through the first through hole 611, it can fit against the side wall of the main shaft 100, increasing the contact area and frictional force between the holding member 500 and the main shaft 100 and improving the connection stability between the holding member 500 and the main shaft 100.

[0059] In one example, the holding member 500 is a U-shaped bolt. The two ends of the U-shaped bolt respectively pass through the first through hole 611, the second through hole, and the third through hole, and the U-shaped bolt is locked by a nut so that the U-shaped bolt (holding member 500), the limiting member 400, and the guide rail member 600 jointly hold the main shaft 100 tightly, thereby synchronously fixing the synchronous shaft suspension structure, the mounting bracket, and the purlin 300 to the main shaft 100. Among them, the groove part of the U-shaped bolt is in contact with and holds the hoop part 610 tightly, and the hoop part 610 can be stably fixed to the main shaft 100. Further, the part of the U-shaped bolt in contact with the main shaft 100 is set to be flat 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-bolt can also be replaced by two long bolts. By using two long bolts, the guide rail member 600 and the purlin 300 can also be synchronously fixed to the main shaft 100. However, compared with long bolts, the U-bolt has fewer components and is more convenient to install. In addition, when the main shaft 100 is a square tube with an R-angle arc surface, the U-bolt passing through the first through hole 611 can adhere to the R-angle arc surface of the main shaft 100, making the connection between the U-bolt and the main shaft 100 more stable.

[0061] In some embodiments, along the axial direction of the main shaft 100, the first through hole 611 and the guide rail portion 620 are arranged staggeredly, that is, the projection of the guide rail portion 620 on the main shaft 100 and the projection of the first through hole 611 on the main shaft 100 are located in different radial planes of the main shaft 100. The first through hole 611 and the guide rail portion 620 are arranged staggeredly, that is, the installation position of the clamping member 500 is staggered from the guide rail portion 620, so that the clamping member 500 can be conveniently inserted into the first through hole 611 on the hoop portion 610 and fix the hoop portion 610 to the main shaft 100, avoiding interference between the clamping member 500 and the guide rail portion 620 during installation and making the installation of the clamping member 500 more convenient and fast.

[0062] In some embodiments, as Figure 4 and Figure 5 shown, the synchronous shaft fixing bracket 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, and 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. The roller 710 is rotatably mounted on the guide rail portion 620. The bearing seat 720 is connected to the roller 710. The spherical bearing 730 is rotatably mounted on the bearing seat 720, and the synchronous shaft 200 is mounted on the spherical bearing 730. The synchronous shaft 200 is suspended from the guide rail portion 620 by the synchronous shaft fixing bracket 700. During operation, the roller 710 of the synchronous shaft fixing bracket 700 can roll on the guide rail portion 620, allowing the synchronous shaft 200 to move relative to the main shaft 100 to reduce the deflection deformation of the synchronous shaft 200 during operation and reduce the risk of cracking of the synchronous shaft 200. The synchronous shaft 200 is mounted on the bearing seat 720 through the spherical bearing 730, and the spherical bearing 730 can rotate relative to the bearing seat 720 to achieve the rotation of the synchronous shaft 200.

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

[0065] In this embodiment, the roller 710 is arranged on the top of the bearing seat 720. There are two mounting holes provided on the top of the bearing seat 720, and the roller 710 is arranged between the two mounting holes. The roller 710 and the bearing seat 720 can be connected through a pin shaft 740 and a split pin 750. Further, a copper tube 760 can be additionally arranged between the pin shaft 740 and the 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 whose cross-sectional shape and size are adapted to those of the synchronizing shaft 200, and the synchronizing 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, enabling the synchronizing shaft 200 and the spherical bearing 730 to rotate relative to the bearing seat 720. Most of the existing synchronizing shaft fixing frames use conventional non-spherical bearings. When the synchronizing shaft 200 rotates with deformation deflection, jamming is likely to occur. In this embodiment, the spherical bearing 730 is used as the bearing. By supporting the synchronizing shaft 200 with the spherical bearing 730, stepless adaptation of the direction change of the synchronizing shaft 200 can be achieved without jamming, solving the problem of bearing operation jamming.

[0067] Further, as Figure 5 shown, the bearing seat 720 includes two split bearing seats 721. The two split bearing seats 721 are connected by counter-rotation and fixed by fasteners, which can simplify the installation of the bearing seat 720. The counter-rotation connection of the two split bearing seats 721 means that after the two split bearing seats 721 are butted, they are connected together by rotating in opposite directions to each other. For example, after the two split bearing seats 721 are butted, one split bearing seat 721 is rotated clockwise, and at the same time, the other split bearing seat 721 is rotated counterclockwise until the two split bearing seats 721 are rotated in place, and finally the two split bearing seats 721 are locked by fasteners. The fasteners can be bolts, screws, etc.

[0068] In this embodiment, both of the two split bearing seats 721 are complete ring structures. The inner ring shape of the bearing seat 720 is adapted to 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, so that there is a gap between the spherical bearing 730 and the bearing seat 720, and the spherical bearing 730 can rotate relative to the bearing seat 720. During installation, the spherical bearing 730 can be placed in one split bearing seat 721, then the other split bearing seat 721 is sleeved on the spherical bearing 730, and then the two split bearing seats 721 are rotated to connect the two split bearing seats 721 together. Finally, the two split bearing seats 721 are fastened by bolts, and the installation of the spherical bearing 730 and the bearing seat 720 can be completed.

[0069] In this embodiment, the structures of the two split bearing seats 721 are the same, and the two split bearing seats 721 can share the same mold for molding to reduce the mold cost. Of course, without considering the cost, the structures of the two split bearing seats 721 can also be set differently.

[0070] Further, on the basis of the above embodiment, as Figure 5 shown, both of the two split bearing seats 721 include an annular portion 7215 and a fixing portion 7216 which are fixedly connected. Connecting portions are provided on both of the two annular portions 7215. After the two annular portions 7215 are connected in counter-rotation, the two connecting portions cooperate to realize the axial fixation of the two split bearing seats 721. At the same time, the two fixing portions 7216 are opposite to each other and are fixed by a bolt pair to realize the 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 counter-rotation. After the two annular portions 7215 are connected in counter-rotation, the connecting portions on the two annular portions 7215 cooperate with each other to realize the 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 realize the circumferential locking of the two split bearing seats 721, so as to realize the fixed assembly of the two split bearing seats 721.

[0072] In one implementation manner, as Figure 4 and Figure 5 shown, the connecting portions on the two split bearing seats 721 both include a first clamping portion 7211 and a second clamping portion 7212. When the two split bearing seats 721 are connected in counter-rotation, the first clamping portion 7211 on one split bearing seat 721 is clamped with the second clamping portion 7212 on the other split bearing seat 721, and the second clamping portion 7212 on one split bearing seat 721 is clamped with the first clamping portion 7211 on the other split bearing seat 721, so that the two split bearing seats 721 are axially fixed to each other, increasing the strength of the bearing seat 720 against axial force. Then the two split bearing seats 721 are locked by bolts 770 to circumferentially fix the two split bearing seats 721, realizing the locking of the two split bearing seats 721. The shapes and sizes of the first clamping portion 7211 and the second clamping portion 7212 on the same split bearing seat 721 may be the same or different.

[0073] Further, as Figure 4As shown, a first inclined surface 7213 is provided on the first clamping portion 7211, and a second inclined surface 7214 adapted to the first inclined surface 7213 is provided on the second clamping portion 7212. When the two split bearing seats 721 are rotationally connected in opposite directions, the first clamping portion 7211 and the second clamping portion 7212 are clamped through the cooperation of the first inclined surface 7213 and the second inclined surface 7214. When the two split bearing seats 721 are rotationally connected in opposite directions, both the first inclined surface 7213 and the second inclined surface 7214 can serve as guiding portions, making it easier for the first clamping portion 7211 on one split bearing seat 721 to be clamped with the second clamping portion 7212 on the other split bearing seat 721, and making it easier for the second clamping portion 7212 on one split bearing seat 721 to be clamped with the first clamping portion 7211 on the other split bearing seat 721, realizing the axial fixation of the two split bearing seats 721, and reducing the assembly difficulty, saving time and effort.

[0074] In other embodiments, the connecting portion can also be a threaded structure or a snap structure, and the two split bearing seats 721 can also be axially fixed after rotational connection in opposite directions through threads or snaps, so as to increase the strength of the bearing seat 720 against axial force. Then, the two split bearing seats 721 are locked by bolts, and the fixed assembly of the two split bearing seats 721 can also be realized.

[0075] Furthermore, bolt holes and clamping grooves 7217 are provided on both of the two fixing portions 7216. After the two annular portions 7215 are rotationally connected in opposite directions and clamped and fixed between the first clamping portion 7211 and the second clamping portion 7212, the bolt 770 of the bolt pair is passed through the bolt holes on the two fixing portions 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 portions 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, only one-sided tightening of the bolt 770 is required. There are fewer bolt installation nodes, and the installation is convenient, fast, time-saving and labor-saving.

[0076] Furthermore, as Figure 5 shown, a sand leakage groove 7218 is provided on the annular portion 7215 of the split bearing seat 721. The sand leakage groove 7218 can greatly reduce the accumulation of wind sand and rainwater in the bearing seat 720, reduce the influence of wind sand and rainwater on the spherical bearing 730, and reduce the wear caused by dust, wind sand, impurities and other particles to the spherical bearing 730, and improve the service life of the spherical bearing 730.

[0077] In summary, in the present application, the hoop portion 610 is combined with the guide rail portion 620 and integrally formed. During on-site installation, no adjustment is required, and it can be correctly installed, so as to ensure that the synchronous shafts 200 of all suspension points are in the correct positions. The guide rail member 600 is installed together with the purlin 300 supporting the photovoltaic module through the mounting bracket, which simplifies the synchronous shaft suspension structure. The synchronous shaft 200 is supported by the spherical bearing 730, and can be steplessly adapted to the direction change of the synchronous shaft 200 without jamming. In addition, the guide rail member 600, the spherical bearing 730 and the split bearing seat 720 can be pre-assembled as a whole. There are few structural components. During on-site installation, only the guide rail member 600 needs to be fixed to the purlin 300 through the U-bolt, and the installation of the synchronous shaft suspension structure can be completed. The installation is convenient and fast, saving the installation man-hours of on-site workers.

[0078] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not described or recorded in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0079] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A photovoltaic tracking bracket, comprising a main shaft, a synchronous shaft, a mounting bracket and a purlin for mounting a photovoltaic module, wherein the mounting bracket comprises a limiter and an embracing member, wherein the limiter is connected to both ends of the embracing member and forms an annular member 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 member and a synchronous shaft fixing frame; The guide rail member comprises 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 spindle, and first through holes are respectively arranged at both ends of the hoop portion along the second direction; The synchronous shaft is mounted on the synchronous shaft fixing frame, and the synchronous 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 part, the limiting member and the purlin in sequence from one side of the hoop part through the first through hole and are locked, and the hoop part, the engaging member and the limiting member are arranged to form an annular space, and the main shaft is installed in the annular space.

2. A photovoltaic tracking bracket according to claim 1, characterized in that: The clamping part includes a main body and two ear plates, and 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 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 comprises 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 synchronous shaft is mounted on the bearing assembly.

5. A photovoltaic tracking bracket according to claim 4, characterized in that: The bearing assembly comprises 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.

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

7. A photovoltaic tracking bracket according to claim 6, characterized in that: The two split bearing seats each include an annular portion and a fixed portion that are fixedly connected. A connecting portion is provided on 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. A 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. A photovoltaic tracking bracket according to claim 8, characterized in that: The first clamping part is provided with a first inclined surface, and the second clamping part is provided with a second inclined surface matched with the first inclined surface. When the two split bearing seats are connected in rotation, the first clamping part and the second clamping part 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, 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, so that the synchronous shaft suspension structure, the mounting bracket and the purlin are synchronously installed on the main shaft.

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