Photovoltaic main beam, photovoltaic bearing seat and photovoltaic system

Abstract

The invention relates to a photovoltaic main beam, a photovoltaic bearing seat and a photovoltaic system.The photovoltaic main beam comprises a tubular main beam body, a macromolecule bearing and a bearing seat used for installing the macromolecule bearing, the main beam body is arranged on the macromolecule bearing in a penetrating mode, and the longitudinal cross section of the main beam body comprises a first arc-shaped section, a second arc-shaped section and a transition section between the first arc-shaped section and the second arc-shaped section; baffles extending in the direction close to the main beam are fixedly connected to the bearing seats; the bearing is formed by vertically combining and connecting a first half seat and a second half seat which are arranged up and down, the first half seat and the second half seat are fixedly connected with baffles extending in the direction close to the main beam, and the ends, close to the main beam, of the baffles are provided with blocking parts. According to the overall structure, large-angle protection and limiting of the photovoltaic tracking support can be achieved, wind power can be dispersed to the multiple main beams and the multiple stand columns through the combined action of the multiple blocking parts on the multiple bearing pedestals, the structural stability of the overall photovoltaic support is improved, and the overall photovoltaic tracking support can be protected and limited. Damage to the photovoltaic module due to resonance can be effectively reduced.

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 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 devices are one of the most important forms of solar energy utilization at present. Photovoltaic power generation devices directly convert sunlight energy into electrical energy based on the principle of photovoltaic effect. Existing photovoltaic power generation devices usually use photovoltaic tracking brackets to support and fix photovoltaic modules. The main beam on the photovoltaic tracking bracket can drive the photovoltaic module to rotate with the movement of the sun to ensure that the sunlight shines on the photovoltaic module as vertically as possible. Therefore, the main beam needs to have good bending strength and torsional strength.

[0004] At present, the pain points of photovoltaic systems in the industry are mainly concentrated on the instability of photovoltaic systems under strong wind conditions. Under strong wind conditions, due to the large area of ​​photovoltaic modules, photovoltaic modules need to withstand large wind loads. When the wind load is transmitted to the photovoltaic bracket, it exerts 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 resonance will cause great damage to the photovoltaic modules.

[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: Provided is a photovoltaic main beam, comprising a main beam arranged in a tubular shape, 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; In the longitudinal cross section of the main beam, the distance between the second arc segment and the center of the main beam is greater than the distance between the first arc segment and the center of the main beam, and the distance between the second arc segment and the center of the main beam is greater than the distance between the transition segment and the center of the main beam; The bearing seats are fixedly connected with baffles extending toward the main beam. When the main beam rotates to a limit 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.

[0008] As a further improvement of the present invention, a plurality of main beams are provided, and the plurality of main beams are fixedly connected and arranged along a straight line direction, and the wall thickness of the main beams is set to 1.5-5 mm.

[0009] As a further improvement of the present invention, one end of the main beam is processed to form a shrinkage connection portion, and rectangular connection holes are opened on both ends of the main beam. The shrinkage connection portion of the main beam extends into the interior of the adjacent main beam and is fixedly connected by T-bolts.

[0010] A photovoltaic bearing seat, used for supporting and installing on the photovoltaic main beam, the bearing is composed of a first half seat and a second half seat arranged up and down, and the first half seat and the second half seat are fixedly connected with a baffle extending toward the main beam, and the baffle is provided with a blocking portion at one end close to 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.

[0011] 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.

[0012] As a further improvement of the present invention, the inner wall of the bearing seat is constructed in a ring shape, and the first half seat and the second half seat are both cast in one piece.

[0013] 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.

[0014] 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.

[0015] A photovoltaic system includes the photovoltaic bearing as described above, and further includes a driving column, a non-driving column, a driving mechanism, a damper, a clamp assembly and a photovoltaic assembly, wherein 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.

[0016] Beneficial effects of the present invention: 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 plate set on the bearing seat can limit the rotation angle of the photovoltaic main beam; 2. The main beam is connected by T-bolts in the necked connection part, and the main beam connection is further supported internally, so that the main beam connection has better fit. The rectangular connection holes opened on the main beam and the necked connection part are used in conjunction with T-bolts. Compared with the existing technology of connecting by hoop or flange, it saves raw materials and has higher connection strength, which can improve the anti-torsion ability of multiple main beams after connection; 3. The one-piece cast combined connection bearing seat is more convenient to install than the traditional bearing seat assembled by fasteners. The baffle can be used to wrap and limit the left and right ends of the polymer bearing at the same time to prevent the polymer bearing from falling off the bearing seat after the photovoltaic system is used for a long time; 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-driving 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

[0017] 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.

[0018] Figure 1 It is a structural diagram of a photovoltaic system of the present invention.

[0019] Figure 2 It is a structural diagram of a photovoltaic main beam cross section of the present invention.

[0020] Figure 3 This is a photovoltaic main beam connection structure diagram of the present invention.

[0021] Figure 4 It is a structural diagram of the polymer bearing of the present invention.

[0022] Figure 5 It is an exploded structural diagram of the bearing assembly of the present invention.

[0023] Figure 6It is a structural diagram of a bearing assembly of a photovoltaic system at 0° according to the present invention.

[0024] Figure 7 It is a structural diagram of a bearing assembly of a photovoltaic system of the present invention when it rotates clockwise to an extreme position.

[0025] Figure 8 It is a structural diagram of a bearing assembly of a photovoltaic system of the present invention when it rotates counterclockwise to an extreme position.

[0026] Fig. 9 It is a front view of the clamp assembly of the present invention.

[0027] Fig.10 It is a connection structure diagram of the clamp assembly of the present invention.

[0028] Fig.11 It is an exploded structural diagram of the clamp assembly of the present invention.

[0029] Fig.12 It is a connection structure diagram of the damper of the present invention.

[0030] Fig.13 The present invention Fig.12 Enlarged structural diagram of part A in the middle.

[0031] Fig.14 It is a structural diagram of a bearing seat in another embodiment of the present invention.

[0032] 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, supporting 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; 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. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying 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 accompanying 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.

[0034] 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 directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on 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, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other, but are not intended to limit the present invention.

[0035] The wind protection strategy adopted by the tracking photovoltaic bracket in the prior art is mostly to lay the photovoltaic components flat to reduce the wind force they are subjected to. However, the resonance or vibration effect at this time is relatively large, and the destructiveness to the overall structure is greater than the working condition when the photovoltaic components are rotated to the extreme position, which is not conducive to the long-term use of the photovoltaic tracking bracket.

[0036] like Figure 2 As shown, Figure 2 It is a cross-sectional structural diagram of a photovoltaic main beam. Different from the common photovoltaic main beam in the prior art, the photovoltaic main beam in the present 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 integrally formed by rolling, and the transition segment 2 is preferably set as a straight segment.

[0037] like Figure 2The main beam 1 shown in the figure 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 a 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 a rotation path with different radii. The blocking portion on the baffle 23 can limit the rotation angle of the photovoltaic main beam.

[0038] like Figure 1 As shown, Figure 1 It is a structural diagram of a 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 a support seat 17, and the photovoltaic assembly 10 is fixedly connected to the top of the main beam 1 through the clamp assembly 8.

[0039] like Figure 5 As shown, Figure 5 The exploded structure diagram of the bearing assembly 9, the polymer bearing 25 is designed as a two-stage buckle connection structure, the polymer bearing 25 is formed 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 held 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 formed by the first half seat 12 and the second half seat 19. The 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 formed by 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 arranged 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.

[0040] The following is a detailed description based on specific application scenarios. Example

[0041] like Figure 2 , Figure 3 As shown, a photovoltaic main beam is evolved from a main beam with a square cross-section, 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 arc segments with chamfered structures, and 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 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 sections of 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 a stable calculated strength is not reduced.

[0042] like Figure 2 , Figure 3 As 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 the stable calculated strength is not reduced.

[0043] In some optional embodiments, multiple main beams 1 are provided, and the multiple main beams 1 are fixedly connected in a straight line direction. 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 for photovoltaic modules 10 of different models.

[0044] 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, which is 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, and the screw head of the T-bolt is extended into the interior and rotated, and the main beam 1 is locked by a nut on the outside. 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 connection of the main beam 1 has better fit. 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 a clamp or flange, raw materials are saved, and the connection strength is also higher, which can improve the torsion resistance of multiple main beams 1 after connection.

[0045] like Figure 4-Figure 5 As 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 as a structure with the same shape as the main beam 1. The inner walls of the upper bearing 14 and the lower bearing 15 are both provided with a plurality of anti-slip slots 22. The outer periphery of the polymer bearing 25 It is arranged 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, and a blocking portion is arranged 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, and 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 positive and negative 60°, positive and negative 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 angle of 0° can be designed according to actual working conditions.

[0046] The bearing seat 24 is formed by a first half seat 12 and a second half seat 19 which are arranged in an upper and lower manner and connected in an upper and lower manner. The first half seat 12 and the second half seat 19 are both fixedly connected with a baffle plate 23 extending toward the main beam 1. The baffle plate 23 is provided with a blocking portion at one end close to the main beam 1. When the main beam 1 rotates to a limit angle, the blocking portion fits with the second arc segment 4 on the main beam 1 to prevent the main beam 1 from further rotating.

[0047] A support seat 17 is fixedly connected to the bottom of the bearing seat 24 , and a connecting waist hole 18 is opened on the support seat 17 .

[0048] 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 bearing 14 and a lower bearing 15 connected in combination. The connection between the upper bearing 14 and the lower bearing 15 is set as a wedge-shaped buckle structure, which can be better buckled during installation and connection to reduce 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 bearing 14 and the lower 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 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 bearing seat 24 with a baffle 23 is installed on the top of the non-driving column 5, 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.

[0049] Specifically, Figure 6-Figure 8 As shown, the structure of the blocking portion and the retaining edge 13 on the baffle plate 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 plate 24 becomes 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 plate 24, the blocking portion and the retaining edge 13 on the baffle plate 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.

[0050] 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, the first half seat 12 and the second half seat 19 are integrally formed with a connecting plate 16 at the bottom, the first half seat 12 and the second half seat 19 are integrally stamped, and the integral stamping has the advantages of lightweight and low cost, and the combined connection, when installing the bearing assembly 9, firstly, the support seat 19 is installed at the top side position of the non-driving column 5 through fasteners and connecting waist holes 18, the first half seat 12 and the second half seat 19 are clamped on the main beam 1, the first half seat 12 and the second half seat 19 are connected by fasteners, clamped on the outside of the polymer bearing 25 and fixed on the top of the support seat 19, and the polymer bearing 25 can be knocked into the inside of the bearing seat 24 without the help of tools, which facilitates the installation of the polymer bearing 25.

[0051] 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.

[0052] like Fig.14 As shown, in some optional embodiments, the bearing seat 24 is formed by a first half seat 12 and a second half seat 19 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, 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 combined and connected through a pin shaft 42, 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, 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 and blocking 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 with the second arc segment 4 on the main beam 1 to prevent the main beam 1 from continuing to rotate.

[0053] The blocking portion on the baffle 23 is fixedly connected outwardly with a retaining edge 13, and the retaining edge 13 can limit the rotation of the main beam 1 together with the baffle 23. In order to further improve the strength of the retaining edge 13, a second reinforcing rib plate 41 is also connected to the baffle 23. When installing the bearing assembly 9, first, the mounting bracket 40 on the second half seat 19 is fixedly connected to the support seat 17 installed on the non-driving column 5, and the bottom of the first half seat 12 and the ear plate 39 on one side of the second half seat 19 are connected with the pin 24, and the polymer bearing 25 is tightly fastened to the main beam 1, the first half seat 12 is rotated, and the ear plate 39 on the other side is connected with the pin 24. It adopts an integrated casting process, which is more convenient to install.

[0054] 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, wherein 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.

[0055] like Fig. 9 , Fig.10 , Fig.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, and 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.

[0056] Unlike the purlins of the C-shaped steel structure commonly used 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 more reasonable in 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 piece 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, so 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 shape as the bottom 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.

[0057] like Fig.12 , Fig.13As shown, in some optional embodiments, the damper 7 is installed on the non-driving column 5 at the bottom and on the main beam 1 at the top. The dampers 7 are arranged in pairs, respectively 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 portion and a straight plate portion. A first reinforcing rib plate 35 for reinforcement is also fixedly connected to the arc portion and the straight plate portion. 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 with an upper connecting seat 36. The non-driving column 5 is fixedly connected with a damper mounting seat 38, and the damper mounting seat 38 is fixedly connected with a lower connecting seat 37. The two ends of the damper 7 are rotatably connected to the upper connecting seat 36 and the lower connecting seat 37 respectively.

[0058] 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 perform strong wind protection, thereby reducing the resonance of the photovoltaic module 10 and the photovoltaic system. At this time, the damper 7 is balanced 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.

[0059] 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, such as Figure 6 As shown, first rotate the main beam 1 to a horizontal position, determine the center point of the main beam 1, and rotate 60° clockwise with the center point of the main beam 1 as the center of the circle. Figure 7 The state shown in the figure is determined, and the contours of the two second arc segments 4 on the main beam 1 are determined. The shapes of the blocking portion and the retaining edge 13 on the baffle 23 are determined based on the contours. 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 overall photovoltaic system is installed. When encountering strong wind conditions during use, the main beam 1 and the photovoltaic assembly 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-driving 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 assembly 10 due to resonance, better play a role of strong wind protection, and improve the structural stability of the overall photovoltaic bracket.

[0060] Similarly, for tracking photovoltaic brackets with other tracking angle ranges, large-angle strong wind protection can also be achieved through the above method.

[0061] 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 illustrating 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, which shall 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 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); In a longitudinal cross section of the main beam (1), 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 bearing seats (25) are fixedly connected with 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 rolling, and the transition section (2) is arranged as a straight section.

3. The photovoltaic main beam according to claim 1, characterized in that: The main beams (1) are arranged in a plurality, and the plurality of main beams (1) are fixedly connected and arranged along a straight line direction, and the wall thickness of the main beams (1) is arranged 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 by shrinking to form a shrinking connection portion (20), and rectangular connection holes (21) are provided at both ends of the main beam (1). The shrinking connection portion (20) of the main beam (1) extends into the interior of an adjacent main beam (1) and is fixedly connected by a T-bolt.

5. A photovoltaic bearing seat, used 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 in an upper and lower manner and connected in an upper and lower manner; a baffle (23) extending in a direction close to 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); When the main beam (1) rotates to a limit angle, the blocking portion fits with 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 a ring 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: It 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 mounted 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) via a support seat (17), and the photovoltaic assembly (10) is fixedly connected to the top of the main beam (1) via the clamp assembly (8).

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