Photovoltaic main beam, photovoltaic bearing seat and photovoltaic system

Abstract

The present invention relates to a photovoltaic main beam, a photovoltaic bearing seat and a photovoltaic system, comprising a main beam arranged in a tubular shape, a polymer bearing, and a bearing seat for installing the polymer bearing, the main beam is passed through the polymer bearing, the longitudinal cross-section of the main beam comprises a first arc segment, a second arc segment and a transition segment between the first arc segment and the second arc segment, and the bearing seats are fixedly connected with baffles extending toward the main beam; the bearing is composed of a first half seat and a second half seat arranged in an upper and lower combination and connected, the first half seat and the second half seat are fixedly connected with baffles extending toward the main beam, and a blocking portion is provided near one end of the baffle near the main beam, when the main beam rotates to a limit angle, the blocking portion fits with the second arc segment on the main beam to prevent the main beam from continuing to rotate, and the overall structure can realize large-angle protection and limiting of the photovoltaic tracking bracket, and through the joint action of multiple blocking portions on multiple bearing seats, wind force can be dispersed to multiple main beams and multiple columns, thereby improving the structural stability of the overall photovoltaic bracket and effectively reducing the damage to the photovoltaic components due to resonance.

Description

[0001] This application is a divisional application. The application number of the original application is 2024101760617, the application date is February 8, 2024, and the name of the invention is "A photovoltaic main beam, photovoltaic bearing and photovoltaic system". Technical Field

[0002] The present invention relates to a photovoltaic main beam, a photovoltaic bearing seat and a photovoltaic system, and belongs to the technical field of photovoltaic brackets. Background Art

[0003] Photovoltaic power generation systems are one of the most important forms of solar energy utilization today. They convert sunlight directly into electricity based on the photovoltaic effect. Existing photovoltaic power generation systems typically use photovoltaic tracking brackets to support and secure the photovoltaic modules. The main beams of the tracking brackets rotate with the movement of the sun, ensuring that sunlight strikes the modules as vertically as possible. Therefore, the main beams must possess strong bending and torsional strength.

[0004] At present, the pain points of photovoltaic systems in the industry are mainly concentrated in the instability of photovoltaic systems under strong wind conditions. Under strong wind conditions, due to the large area of ​​​​the photovoltaic modules, the photovoltaic modules need to withstand large wind loads. When the wind load is transmitted to the photovoltaic bracket, it generates a large force on the photovoltaic bracket, which puts a great test on the structural stability. The mainstream solution on the market is to lay the photovoltaic modules flat to reduce the wind force on the photovoltaic modules. However, under this condition, the damage to the photovoltaic modules due to resonance is relatively large.

[0005] Therefore, it is urgent to invent a photovoltaic main beam, a photovoltaic bearing seat and a photovoltaic system to solve the above problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention overcomes the existing defects and provides a photovoltaic main beam, a photovoltaic bearing seat and a photovoltaic system. The photovoltaic system is protected from strong winds by a large protection angle at the extreme angle of the photovoltaic system, which can effectively reduce the damage to the photovoltaic components due to resonance. At the same time, through the joint action of multiple blocking parts on multiple bearing seats, the wind force can be dispersed to multiple main beams and multiple columns, thereby improving the structural stability of the overall photovoltaic bracket, which can effectively solve the problems in the background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] Provided is a photovoltaic main beam, comprising a tubular main beam, a polymer bearing, and a bearing seat for mounting the polymer bearing, wherein the main beam is passed through the polymer bearing, and a longitudinal cross-section of the main beam comprises a first arc segment, a second arc segment, and a transition segment between the first arc segment and the second arc segment;

[0009] In the longitudinal cross section of the main beam, the distance between the second arcuate segment and the center of the main beam is greater than the distance between the first arcuate segment and the center of the main beam, and the distance between the second arcuate segment and the center of the main beam is greater than the distance between the transition segment and the center of the main beam;

[0010] The bearing seats are fixedly connected with baffles extending toward the main beam. When the main beam rotates to the extreme angle, the baffles overlap and contact with the second arc section to prevent the main beam from continuing to rotate, thereby playing a limiting role.

[0011] As a further improvement of the present invention, the main beams are provided in plurality, the plurality of main beams are fixedly connected and provided along a straight line, and the wall thickness of the main beams is provided in a range of 1.5-5 mm.

[0012] As a further improvement of the present invention, one end of the main beam is processed to form a necked connection portion, and rectangular connection holes are opened on both ends of the main beam. The necked connection portion of the main beam extends into the interior of the adjacent main beam and is fixedly connected by T-bolts.

[0013] A photovoltaic bearing seat, used for supporting and mounting on the photovoltaic main beam mentioned above, the bearing is composed of a first half seat and a second half seat arranged upper and lower and connected in an upper and lower combination, the first half seat and the second half seat are fixedly connected to a baffle extending toward the main beam, and the baffle is provided with a blocking portion near one end of the main beam;

[0014] When the main beam rotates to a limit angle, the blocking portion fits into the second arc section on the main beam to prevent the main beam from continuing to rotate.

[0015] As a further improvement of the present invention, the bottom of the first half seat and the top of the second half seat are fixedly connected with ear plates arranged at intervals, and the first half seat and the second half seat are connected by a pin shaft combination.

[0016] As a further improvement of the present invention, the inner wall of the bearing seat is constructed into a ring shape, and the first half seat and the second half seat are both cast in one piece.

[0017] As a further improvement of the present invention, the blocking portion is fixedly extended outward to form a retaining edge, and the retaining edge is designed as a multi-section structure. The blocking portion and the retaining edge are used to limit the rotation of the main beam within a certain angle range.

[0018] As a further improvement of the present invention, a support seat is fixedly connected to the bottom of the bearing seat, and a connecting waist hole is opened on the support seat.

[0019] A photovoltaic system includes the photovoltaic bearing as described above, and the photovoltaic system also includes a driving column, a non-driving column, a driving mechanism, a damper, a clamp assembly and a photovoltaic assembly. The driving mechanism is installed on the top of the driving column, and the left and right ends of the driving mechanism are fixedly connected to the main beam. The bearing seat is fixedly connected to the top of the non-driving column through a support seat, and the photovoltaic assembly is fixedly connected to the top of the main beam through a clamp assembly.

[0020] Beneficial effects of the present invention:

[0021] 1. When the photovoltaic main beam rotates, it rotates with the center point of the main beam as the center of the circle. The first arc segment and the second arc segment form a rotation path with different radii. The baffle set on the bearing seat can limit the rotation angle of the photovoltaic main beam;

[0022] 2. The main beams are connected by T-bolts in the necked connection part, which further supports the main beam connection internally and improves the fit of the main beam connection. The rectangular connection holes opened on the main beam and the necked connection part are used with T-bolts. Compared with the existing technology of connecting with clamps or flanges, it saves raw materials and has higher connection strength, which can improve the torsion resistance of multiple main beams after connection.

[0023] 3. The integrated casting combined connection bearing seat is more convenient to install than the traditional bearing seat assembled by fasteners. The baffle can simultaneously wrap and limit the left and right ends of the polymer bearing to prevent the polymer bearing from falling off the bearing seat after long-term use of the photovoltaic system.

[0024] 4. The blocking part on the baffle plays a limiting role when the main beam rotates to the extreme position, preventing the main beam from continuing to rotate when it rotates to the extreme position. Since the top of the non-drive column is equipped with a bearing seat with a baffle, the multiple blocking parts on the multiple bearing seats work together to disperse the wind force to multiple main beams and multiple columns, reducing the damage to photovoltaic components due to resonance, better protecting against strong winds, and improving the structural stability of the overall photovoltaic bracket. The overall design achieves better large-angle strong wind protection without increasing the weight of the photovoltaic system, and has great promotion benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] Figure 1 It is a structural diagram of a photovoltaic system of the present invention.

[0027] Figure 2 This is a structural diagram of a photovoltaic main beam cross section of the present invention.

[0028] Figure 3 This is a photovoltaic main beam connection structure diagram of the present invention.

[0029] Figure 4 It is a structural diagram of the polymer bearing of the present invention.

[0030] Figure 5 It is an exploded structural diagram of the bearing assembly of the present invention.

[0031] Figure 6 This is a structural diagram of a bearing assembly of a photovoltaic system at 0° according to the present invention.

[0032] Figure 7 It is a structural diagram of a bearing assembly of a photovoltaic system according to the present invention when it rotates clockwise to its extreme position.

[0033] Figure 8 It is a structural diagram of a bearing assembly of a photovoltaic system according to the present invention when it is in the counterclockwise rotation extreme position.

[0034] Figure 9 It is a front view of the clamp assembly of the present invention.

[0035] Figure 10 It is a connection structure diagram of the clamp assembly of the present invention.

[0036] Figure 11 It is an exploded structural diagram of the clamp assembly of the present invention.

[0037] Figure 12 It is a diagram of the connection structure of the damper of the present invention.

[0038] Figure 13 This invention Figure 12 Enlarged structural diagram of part A in the middle.

[0039] Figure 14 It is a structural diagram of a bearing seat in another embodiment of the present invention.

[0040] Numbers in the figure: 1, main beam; 2, transition section; 3, first arc section; 4, second arc section; 5, non-driving column; 6, driving mechanism; 7, damper; 8, fixture assembly; 9, bearing assembly; 10, photovoltaic module; 11, driving column; 12, first half seat; 13, retaining edge; 14, upper half bearing; 15, lower half bearing; 16, connecting plate; 17, support seat; 18, connecting waist hole; 19, second half seat; 20, shrinkage connection; 21, rectangular connecting hole; 22, Slot hole; 23. Baffle; 24. Bearing seat; 25. Polymer bearing; 26. Main beam clamp; 27. Purlin; 28. Clamping screw; 29. ​​First fitting part; 30. Second fitting part; 31. Lining part; 32. First clamp; 33. Second clamp; 34. Arc-shaped connecting section; 35. First reinforcing rib plate; 36. Upper connecting seat; 37. Lower connecting seat; 38. Damper mounting seat; 39. Ear plate; 40. Mounting bracket; 41. Second reinforcing rib plate; 42. Pin shaft. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, but they are not intended to limit the present invention.

[0043] The wind protection strategy adopted by tracking photovoltaic brackets in the existing technology is mostly to lay the photovoltaic modules flat to reduce the wind force they bear. However, the resonance or vibration effect at this time is greater, and the destructiveness to the overall structure is greater than the working condition when the photovoltaic modules are rotated to the extreme position, which is not conducive to the long-term use of the photovoltaic tracking bracket.

[0044] like Figure 2 As shown, Figure 2 This is a cross-sectional structural diagram of a photovoltaic main beam. Unlike the common photovoltaic main beams in the prior art, the photovoltaic main beam in this application is composed of a first arc segment 3, a second arc segment 4, and a transition segment 2 between the first arc segment 3 and the second arc segment 4. The distance between the second arc segment 4 and the center of the main beam 1 is greater than the distance between the first arc segment 3 and the center of the main beam 1, and the distance between the second arc segment 4 and the center of the main beam 1 is greater than the distance between the transition segment 2 and the center of the main beam 1. The main beam 1 is preferably formed as one piece by roller pressing, and the transition segment 2 is preferably set as a straight segment.

[0045] like Figure 2 The main beam 1 shown has a diamond-shaped cross-section, and its overall cross-section is evolved from a square cross-section. A group of diagonal positions in the square cross-section are designed as the first arc segment 3 with a large-angle chamfered structure. When the photovoltaic main beam rotates, it rotates with the center point of the original square as the center of the circle, so that the first arc segment 3 and the second arc segment 4 form rotation paths with different radii. The blocking part on the baffle 23 can limit the rotation angle of the photovoltaic main beam.

[0046] like Figure 1 As shown, Figure 1 This is a structural diagram of the photovoltaic system, which mainly includes a driving column 11, a non-driving column 5, a driving mechanism 6, a damper 7, a clamp assembly 8, a bearing assembly 9 and a photovoltaic assembly 10. The driving mechanism 6 is installed on the top of the driving column 11, and the left and right ends of the driving mechanism 6 are fixedly connected to the main beam 1. The bearing assembly 9 includes a bearing seat 24 and a polymer bearing 25. The polymer bearing 25 is made of UPE (ultra-high molecular weight polyethylene) material commonly used in the prior art. The bearing seat 24 is fixedly connected to the top of the non-driving column 5 through the support seat 17, and the photovoltaic assembly 10 is fixedly connected to the top of the main beam 1 through the clamp assembly 8.

[0047] like Figure 5 As shown, Figure 5The exploded structure diagram of the bearing assembly 9 shows that the polymer bearing 25 is designed as a two-stage buckle connection structure. The polymer bearing 25 is connected by the upper half bearing 14 and the lower half bearing 15. The connection between the upper half bearing 14 and the lower half bearing 15 is set as a wedge-shaped buckle structure. The upper half bearing 14 and the lower half bearing 15 are fixedly connected and tightly clamped on the main beam 1 by a long screw. The bearing seat 24 is set on the outside of the polymer bearing 25 and is used to install the polymer bearing 25. When the main beam 1 rotates, the polymer bearing 25 is driven to rotate on the bearing seat 24. The bearing seat 24 is connected by the first half seat 12 and the second half seat 19. The outer periphery of the polymer bearing 25 is set as a ring. The bearing seat 24 The inner wall is designed as a ring of corresponding size, and a baffle 23 is fixedly connected to the outer side of the first half seat 12 and the second half seat 19. After the polymer bearing 25 is installed on the bearing seat 24 composed of the first half seat 12 and the second half seat 19, the baffle 23 arranged on the outer side can play a limiting and blocking role for the polymer bearing 25, solving the problem in the prior art that the polymer bearing 25 is easily detached from the bearing seat due to torque after long-term use. The blocking portion provided on the baffle 23 is adapted to the structure of the second arc segment 4, and can play a limiting role when the main beam 1 rotates to the limit position, preventing the main beam 1 from continuing to rotate when it rotates to the limit position, thereby playing a role in strong wind protection.

[0048] The following is a detailed description based on specific application scenarios. Example

[0049] like Figure 2 、 Figure 3 As shown, a photovoltaic main beam is evolved from a main beam with a square cross-section, wherein a group of right-angled diagonals of the square cross-section are replaced with large arc transitions, and another group of right-angled diagonals are replaced with arc segments with chamfered structures. The cross-section of the main beam 1 is composed of a symmetrically arranged first arc segment 3, a second arc segment 4, and a transition segment 2 between the first arc segment 3 and the second arc segment 4. Preferably, the length of the first arc segment 3 is designed to be 2-3 times the length of the transition segment 2, the distance between the second arc segment 4 and the center of the main beam 1 is greater than the distance between the first arc segment 3 and the center of the main beam 1, and the second arc segment 4 is symmetrically arranged between the first arc segment 3 and the center of the main beam 1. The distance between the centers of the main beams 1 is greater than the distance between the transition section 2 and the center of the main beam 1. The main beam 1 is arranged in a tubular shape, that is, from a spatial point of view, the main beam 1 is composed of two arc-shaped plates and a transition plate between the arc-shaped plates. The transition plate is preferably a flat plate. The second arc-shaped section 4 is used in conjunction with the blocking portion on the baffle 23 to prevent the main beam 1 from continuing to rotate after rotating to the extreme position. The main beam 1 is integrally formed by roller pressing, which reduces the deformation of the main beam compared to welding. Compared with the square-shaped main beam in the prior art, the main beam 1 of the structure of the present application has a large arc design, a smaller W / T value, and stable calculated strength is not reduced.

[0050] like Figure 2 、 Figure 3As shown, a photovoltaic main beam is evolved from a main beam with a square cross-section, in which a group of right-angled diagonals of the square cross-section are replaced by large arc transitions, and another group of right-angled diagonals are replaced by chamfers. The cross-section of the main beam 1 is composed of a symmetrically arranged first arc segment 3, a second arc segment 4 and a transition segment 2 between the first arc segment 3 and the second arc segment 4. The main beam 1 is arranged in a tubular shape. When the second arc segment 4 rotates to the blocking portion on the baffle 23, the second arc segment 4 fits with the blocking portion on the baffle 23 to prevent the main beam 1 from continuing to rotate after rotating to the extreme position. The main beam 1 is integrally formed by rolling, which reduces the deformation of the main beam compared to welding. Compared with the square-shaped main beam in the prior art, the main beam 1 of the structure of the present application has a large arc design, a smaller W / T value, and stable calculated strength is not reduced.

[0051] In some optional embodiments, multiple main beams 1 are provided, and the multiple main beams 1 are fixedly connected along a straight line. The wall thickness of the main beam 1 is set to 1.5-5 mm. Main beams 1 with different wall thicknesses can be selected according to actual working conditions to meet the support requirements of photovoltaic modules 10 of different models.

[0052] In some optional embodiments, one end of the main beam 1 is processed by shrinking to form a shrinking connection part 20, and rectangular connection holes 21 are opened on both ends of the main beam 1. The shrinking connection part 20 of the main beam 1 extends into the interior of the adjacent main beam 1 and is fixedly connected by T-bolts. The smaller the distance between the outer wall of the shrinking connection part 20 and the inner wall of one end of the adjacent main beam 1, the better, generally set to 1-1.5mm. When multiple main beams 1 are connected, the shrinking connection part 20 is extended into the end of the adjacent main beam 1, the T-bolt screw head is extended into the interior and rotated, and locked by a nut on the outside of the main beam 1. Compared with the common long screw connection in the prior art, the connection of the main beam 1 can be further supported internally, and the fit of the connection of the main beam 1 is better. The rectangular connection holes 21 opened on the main beam 1 and the shrinking connection part 20 are used in conjunction with T-bolts. Compared with the prior art connection method through clamps or flanges, raw materials are saved, and the connection strength is also higher, which can improve the torsion resistance of multiple main beams 1 after connection.

[0053] like Figure 4-Figure 5As shown, a photovoltaic bearing is used to be installed on the above-mentioned photovoltaic main beam, including a polymer bearing 25 and a bearing seat 24 for installing the polymer bearing 25. The polymer bearing 25 is set as a combined structure. The polymer bearing 25 is composed of an upper bearing 14 and a lower bearing 15 combined and connected. The connection between the upper bearing 14 and the lower bearing 15 is set as a wedge-shaped buckle structure. The upper bearing 14 and the lower bearing 15 are fixedly connected by a long screw. The inner wall of the polymer bearing 25 is set to a structure with the same shape as the main beam 1. A number of anti-slip slots 22 are opened on the inner walls of the upper bearing 14 and the lower bearing 15. The outer periphery of the polymer bearing 25 It is set in a ring shape, and the first half seat 12 and the second half seat 19 are fixedly connected to the outer side with a baffle 23 for limiting and blocking the polymer bearing 25. A blocking portion is provided on the baffle 23 near one end of the main beam 1, and the other end of the baffle 23 is fixedly connected to the outside with a retaining edge 13. The retaining edge 13 is designed as a multi-section structure. The retaining edge 13 cooperates with the blocking portion on the baffle 23 to limit the rotation of the main beam 1 within a certain angle range. The certain angle range here refers to the rotation range of the photovoltaic system, such as the common plus or minus 60°, plus or minus 45°, etc. in the prior art. The angles of the baffle 23 and the retaining edge 13 relative to the main beam 1 at a horizontal 0° can be designed according to actual working conditions.

[0054] The bearing seat 24 is composed of a first half seat 12 and a second half seat 19 which are connected in an upper and lower manner. A baffle 23 extending toward the main beam 1 is fixedly connected to each of the first half seat 12 and the second half seat 19. A blocking portion is provided at one end of the baffle 23 close to the main beam 1.

[0055] When the main beam 1 rotates to a limit angle, the blocking portion fits into the second arc segment 4 on the main beam 1 to prevent the main beam 1 from continuing to rotate.

[0056] The bottom of the bearing seat 24 is fixedly connected to a support seat 17 , and a connecting waist hole 18 is opened on the support seat 17 .

[0057] Compared with the common connection method between bearings and bearing seats in the prior art, the present application adopts an integrally formed bearing seat design to facilitate construction and installation. The polymer bearing 25 is composed of an upper half bearing 14 and a lower half bearing 15 connected in combination. The connection between the upper half bearing 14 and the lower half bearing 15 is set as a wedge-shaped buckle structure, which can be better buckled during installation and connection, reducing the slippage between the bearing seat 24 and the main beam 1. At the same time, a baffle 23 is set on the outer side of the first half seat 12 and the second half seat 19. After the upper half bearing 14 and the lower half bearing 15 are installed between the first half seat 12 and the second half seat 19, the baffle 23 can be removed from the polymer bearing The left and right ends of 25 are wrapped and limited to prevent the polymer bearing 25 from falling off from the bearing seat 24 after the photovoltaic system is used for a long time. The blocking part on the baffle 24 and the retaining edge 13 are arranged in parallel at the extreme position of the rotation trajectory of the main beam 1, and play a limiting role when the main beam 1 rotates to the extreme position, preventing the main beam 1 from continuing to rotate when it rotates to the extreme position. Since the top of the non-driving column 5 is equipped with a bearing seat 24 with a baffle 23, the multiple baffles 23 on the multiple bearing seats 24 work together to disperse the wind force to multiple main beams and multiple columns, better play the role of strong wind protection, and improve the structural stability of the overall photovoltaic bracket.

[0058] Specifically, if Figure 6-Figure 8 As shown, the structure of the blocking portion and the retaining edge 13 on the baffle 24 is adapted to the structure of the second arc segment 4, and can play a limiting role when the main beam 1 rotates to the extreme position. When the photovoltaic module 10 is in a horizontal state, the second arc segment 4 on the main beam 1 is also in a horizontal state. As the driving mechanism 6 drives the main beam 1 to rotate, the distance between the second arc segment 4 on the main beam 1 and the blocking portion and the retaining edge 13 on the baffle 24 is getting closer and closer. Since the second arc segment 4 is the maximum radius part during the rotation of the main beam 1, when the second arc segment 4 on the main beam 1 rotates clockwise to the blocking portion and the retaining edge 13 on the baffle 24, the blocking portion and the retaining edge 13 on the baffle 24 arranged parallel to the main beam 1 play a blocking role on the second arc segment 4 on the main beam 1, preventing the main beam 1 from continuing to rotate beyond the extreme angle.

[0059] like Figure 5As shown, in some optional embodiments, the bearing seat 24 is formed by a left-right combination of a first half seat 12 and a second half seat 19, the first half seat 12 and the second half seat 19 are fixedly connected by bolts, and the bottom of the first half seat 12 and the second half seat 19 are integrally formed with a connecting plate 16, and the first half seat 12 and the second half seat 19 are integrally stamped. Through integral stamping, it has the advantages of lightweight and low cost, and a combined connection. When installing the bearing assembly 9, first install the support seat 19 on the top side of the non-drive column 5 through fasteners and connecting waist holes 18, clamp the first half seat 12 and the second half seat 19 on the main beam 1, and connect the first half seat 12 and the second half seat 19 through fasteners to clamp them on the outside of the polymer bearing 25 and fix them on the top of the support seat 19. There is no need to use tools to knock the polymer bearing 25 into the inside of the bearing seat 24, which facilitates the installation of the polymer bearing 25.

[0060] Furthermore, the first half seat 12 and the second half seat 19 are punched to form connecting plates, and waist holes connected to the support seat 17 are opened on the connecting plates.

[0061] like Figure 14 As shown, in some optional embodiments, the bearing seat 24 is formed by the first half seat 12 and the second half seat 19 being connected in an upper and lower combination. The bottom of the first half seat 12 and the top of the second half seat 19 are fixedly connected with ear plates 39 arranged at intervals, and the bottom of the second half seat 19 is fixedly connected with a mounting bracket 40. The first half seat 12 and the second half seat 19 are connected by a pin shaft 42, and the pin shaft 42 is used in conjunction with a cotter pin for limiting. The first half seat 12 and the second half seat 19 are integrally cast, and the ear plates 39 on the first half seat 12 and the second half seat 19 are staggered, and the ear plates 39 are provided with through holes for installing the pin shaft 42. The first half seat 12 and the second half seat 19 are fixedly connected on the outer side with a baffle 23 for limiting the polymer bearing 25. The baffle 23 is provided with a blocking portion near one end of the main beam 1. When the main beam 1 rotates to the limit angle, the blocking portion fits into the second arc section 4 on the main beam 1 to prevent the main beam 1 from continuing to rotate.

[0062] The blocking portion on the baffle 23 is fixedly connected to the outside with a rib 13, and the rib 13 can limit the rotation of the main beam 1 together with the baffle 23. In order to further improve the strength of the rib 13, a second reinforcing rib plate 41 is also connected to the baffle 23. When installing the bearing assembly 9, first fix the mounting bracket 40 on the second half seat 19 to the support seat 17 installed on the non-drive column 5, connect the bottom of the first half seat 12 and the ear plate 39 on one side of the second half seat 19 with a pin 24, fasten the polymer bearing 25 on the main beam 1, rotate the first half seat 12, and connect the ear plate 39 on the other side with a pin 24. It adopts one-piece casting processing, which is more convenient to install.

[0063] A photovoltaic system includes the above-mentioned photovoltaic bearing, and also includes a driving column 11, a non-driving column 5, a driving mechanism 6, a damper 7, a clamp assembly 8 and a photovoltaic assembly 10. The driving mechanism 6 is installed on the top of the driving column 11, and the left and right ends of the driving mechanism 6 are fixedly connected to the main beam 1. The bearing seat 24 is fixedly connected to the top of the non-driving column 5 through the support seat 17, and the photovoltaic assembly 10 is fixedly connected to the top of the main beam 1 through the clamp assembly 8.

[0064] like Figure 9 、 Figure 10 、 Figure 11 As shown, in some optional embodiments, the driving mechanism 6 is configured as a worm gear reducer, and the clamp assembly 8 is composed of a main beam clamp 26, a purlin 27, a clamping screw 28, and an inner lining 31. The main beam clamp 26 is arranged at the bottom of the main beam 1, and the purlin 27 is arranged at the top of the main beam 1. The top of the main beam clamp 26 and the bottom of the purlin 27 are respectively provided with a first fitting portion 29 and a second fitting portion 30 of an arc structure that fits the shape of the first arc segment 3. The inner lining 31 is arranged inside the purlin 27. The inner lining 31, the purlin 27 and the main beam clamp 26 are fixedly mounted on the main beam 1 by the clamping screw 28.

[0065] Unlike the purlins of the common C-shaped steel structure in the prior art, the purlin 27 in the present application is designed as a ship-shaped structure with a top width greater than a bottom width, and with the second fitting portion 39 of the arc-shaped structure, the overall structure adopts a design of a folded edge plus an arc-shaped edge, which is more uniform in force and has a more reasonable structural design. Compared with the traditional C-shaped steel purlin, the force on the clamping screw 28 can be reduced, thereby using a smaller clamping screw 28, further reducing the total weight of the overall photovoltaic system and reducing costs. The first fitting portion 29 and the second fitting portion 39 of the arc-shaped mechanism that fit the shape of the first arc segment 3 are respectively provided at the top of the main beam clamping piece 26 and the bottom of the purlin 27. The fitting portion 30 is adapted to the arc-shaped portion 3 on the main beam 1. After the purlin 27 and the main beam clamping member 26 are installed, they can be well fitted on the main beam 1. The clamping screw 28 is tightly fitted with the straight portion 2 of the main beam 1, and the clamp assembly 8 can be well installed on the main beam 1 to prevent slipping. The lining member 31 is designed to have the same structure as the bottom shape of the purlin 27. The cross-section of the lining member 31 is designed to be U-shaped, and its internal width is slightly larger than the minimum width of the top screw head of the clamping screw 28, and smaller than the maximum width of the top screw head of the clamping screw 28. Therefore, when installing the clamping screw 28, the lining member 31 can play a limiting role, which is convenient for installation.

[0066] like Figure 12 、 Figure 13As shown, in some optional embodiments, the bottom of the damper 7 is installed on the non-driving column 5 and the top is installed on the main beam 1. The dampers 7 are arranged in pairs and are respectively arranged on the left and right sides of the non-driving column 5. The main beam 1 is fixedly connected with a first clamp 32 and a second clamp 33. The first clamp 32 and the second clamp 33 are both composed of an arc-shaped part and a straight plate part. The arc-shaped part and the straight plate part are also fixedly connected with a first reinforcing rib 35 for reinforcement. The first clamp 32 and the second clamp 33 are clamped on the main beam 1 by fasteners. The left and right sides of the second clamp 33 are fixedly connected with an arc-shaped connecting section 34, and the other end of the arc-shaped connecting section 34 is fixedly connected to an upper connecting seat 36. A damper mounting seat 38 is fixedly connected to the non-driving column 5, and a lower connecting seat 37 is fixedly connected to the damper mounting seat 38. The two ends of the damper 7 are rotatably connected to the upper connecting seat 36 and the lower connecting seat 37 respectively.

[0067] By installing two dampers 7 on the non-driving column 5 away from the driving column 11, when in a strong wind environment, the photovoltaic module 10 on the main beam 1 rotates to the extreme position with the main beam 1 to provide strong wind protection, thereby reducing the resonance of the photovoltaic module 10 and the photovoltaic system. At this time, the damper 7 balances from both sides, and the energy of the resonance is consumed through the movement of the damper 7. Compared with the traditional single damper structure, the dampers 7 installed on both sides can better balance the wind force, and smaller dampers can be selected with almost no increase in cost.

[0068] Taking the mainstream tracking angle range of ±60° in the current market as an example, when determining the shape structure and installation position of the blocking portion and the retaining edge 13 on the baffle 23, as shown in FIG. Figure 6 As shown, first rotate the main beam 1 to the horizontal position, determine the center point of the main beam 1, and rotate it 60° clockwise with the center point of the main beam 1 as the center of the circle. Figure 7 The state shown is shown, and the contours of the two second arc segments 4 on the main beam 1 are determined. The contours are used to determine the blocking portion and the partial shape of the retaining edge 13 on the baffle 23. Then the main beam 1 is rotated to the -60° position. Figure 8In the state shown, the outline of the blocking part and the other part of the retaining edge 13 on the baffle 23 is determined, and the complete shape and position of the blocking part and the retaining edge 13 on the baffle 23 are determined, and the installation of the entire photovoltaic system is completed. When encountering strong wind conditions during use, the main beam 1 and the photovoltaic component 10 are rotated to a close limit position through the driving mechanism 6 for large-angle strong wind protection. The blocking part and the retaining edge 13 on the baffle 23 are arranged in parallel along the limit position of the rotation trajectory of the main beam 1, and play a limiting role when the main beam 1 rotates to the limit position, preventing the main beam 1 from continuing to rotate when it rotates to the limit position. Since the top of the non-driven column 5 is equipped with a bearing seat 24 with a blocking part and a retaining edge 13, the multiple blocking parts on the multiple bearing seats 24 work together with the retaining edge 13 to disperse the wind force to multiple main beams and multiple columns, reduce the damage to the photovoltaic component 10 due to resonance, better play a role of strong wind protection, and improve the structural stability of the overall photovoltaic bracket.

[0069] Similarly, for tracking photovoltaic brackets with other tracking angle ranges, large-angle strong wind protection can also be achieved through the above method.

[0070] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic main beam, comprising a main beam (1) arranged in a tubular shape, a polymer bearing (25), and a bearing seat (24) for mounting the polymer bearing (25), wherein the main beam (1) is passed through the polymer bearing (25), and is characterized in that: The longitudinal cross section of the main beam (1) comprises a first arcuate segment (3), a second arcuate segment (4), and a transition segment (2) between the first arcuate segment (3) and the second arcuate segment (4); In the longitudinal cross section of the main beam (1), the distance between the second arcuate segment (4) and the center of the main beam (1) is greater than the distance between the first arcuate segment (3) and the center of the main beam (1), and the distance between the second arcuate segment (4) and the center of the main beam (1) is greater than the distance between the transition segment (2) and the center of the main beam (1); The bearing seats (24) are fixedly connected to baffles (23) extending in a direction close to the main beam (1). When the main beam (1) rotates to a limit angle, the baffles (23) partially overlap and contact with the second arc segment (4) to prevent the main beam (1) from continuing to rotate, thereby playing a limiting role.

2. The photovoltaic main beam according to claim 1, characterized in that: The main beam (1) is integrally formed by roller pressing, and the transition section (2) is configured as a straight section.

3. The photovoltaic main beam according to claim 1, characterized in that: The main beams (1) are provided in a plurality, and the plurality of main beams (1) are fixedly connected and provided along a straight line direction, and the wall thickness of the main beams (1) is set to be 1.5-5 mm.

4. The photovoltaic main beam according to claim 3, characterized in that: One end of the main beam (1) is processed to form a necked connection portion (20), and rectangular connection holes (21) are provided on both ends of the main beam (1). The necked connection portion (20) of the main beam (1) extends into the interior of the adjacent main beam (1) and is fixedly connected by T-bolts.

5. A photovoltaic bearing seat for supporting and installing the photovoltaic main beam according to any one of claims 1 to 4, characterized in that: The bearing seat (24) is formed by a first half seat (12) and a second half seat (19) which are arranged upper and lower and connected in an upper and lower combination; the first half seat (12) and the second half seat (19) are both fixedly connected with a baffle (23) extending toward the main beam (1); and a blocking portion is provided at one end of the baffle (23) close to the main beam (1); When the main beam (1) rotates to a limit angle, the blocking portion fits into the second arc section (4) on the main beam (1) to prevent the main beam (1) from continuing to rotate.

6. The photovoltaic bearing seat according to claim 5, characterized in that: The bottom of the first half seat (12) and the top of the second half seat (19) are both fixedly connected with ear plates (39) arranged at intervals, and the first half seat (12) and the second half seat (19) are combined and connected via a pin shaft (42).

7. The photovoltaic bearing seat according to claim 5, characterized in that: The blocking portion is fixedly extended outward to form a retaining edge (13), and the retaining edge (13) is designed as a multi-section structure. The blocking portion and the retaining edge (13) are used to limit the rotation of the main beam (1) within a certain angle range.

8. The photovoltaic bearing seat according to claim 7, characterized in that: The inner wall of the bearing seat (24) is constructed in an annular shape, and the first half seat (12) and the second half seat (19) are both integrally cast.

9. The photovoltaic bearing seat according to claim 5, characterized in that: The bottom of the bearing seat (24) is fixedly connected to a support seat (17), and a connecting waist hole (18) is provided on the support seat (17).

10. A photovoltaic system comprising the photovoltaic bearing seat according to any one of claims 5 to 9, characterized in that: The invention also includes a driving column (11), a non-driving column (5), a driving mechanism (6), a damper (7), a clamp assembly (8) and a photovoltaic assembly (10), wherein the driving mechanism (6) is installed on the top of the driving column (11), the left and right ends of the driving mechanism (6) are fixedly connected to the main beam (1), the bearing seat (24) is fixedly connected to the top of the non-driving column (5) through the support seat (17), and the photovoltaic assembly (10) is fixedly connected to the top of the main beam (1) through the clamp assembly (8).

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