Photovoltaic tracker rotating folding beam and installation method thereof

Abstract

A photovoltaic tracker rotating folding beam and its installation method are intended to solve the technical problems in the prior art that the photovoltaic tracker support structure cannot be adaptively adjusted according to the shape of the photovoltaic module and is troublesome to install. The present invention includes a main shaft and a secondary beam, the secondary beam and the main shaft are movably connected through a mounting member arranged on the main shaft, the main shaft is provided with an angle limiter for angularly positioning the secondary beam, the secondary beam can rotate relative to the main shaft along the circumference of the angle limiter, the main shaft is provided with a first sliding member that can slide along its length direction, one end of a connecting rod is hinged on the first sliding member, and the other end of the connecting rod is hinged to a second sliding member on the secondary beam that can slide along its length direction. The present invention has the following beneficial effects: (1) the secondary beam is fitted with the main shaft to form a folding structure, and during installation, only the secondary beam needs to be arranged and positioned, and the installation process is simple; (2) the same support structure can be used to support photovoltaic modules of different shapes and different mass distributions.

Description

Technical Field

[0001] The invention relates to the field of new energy utilization, and in particular to a photovoltaic tracker rotating folding beam and an installation method thereof. Background Art

[0002] The development of new energy and renewable clean energy is a common issue facing the world. Among the new energy sources, photovoltaic power generation has attracted much attention. The photovoltaic power generation market has broad prospects, but the utilization efficiency of solar energy is low, and it faces the problems of high construction costs and low return on investment. At present, the installation methods for solar photovoltaic modules mainly include fixed method and automatic tracking method. The use of automatic tracking method can increase the power generation by about 20% compared with the fixed method, and has broad market prospects; however, the angle between the main axis and the secondary beam of the existing photovoltaic tracker is fixed, and the photovoltaic tracker bracket structure can only support photovoltaic modules of a certain fixed shape, and cannot be adaptively adjusted according to the different shapes of different photovoltaic modules, which greatly narrows the scope of application of the photovoltaic tracker bracket; in addition, the installation process of the existing photovoltaic tracker bracket structure is relatively complicated, and the installation reliability is difficult to guarantee.

[0003] A Chinese patent with authorization announcement number CN 103838249 B discloses a solar photovoltaic module tracking device and an installation method thereof, comprising a column, a main shaft is provided between two adjacent columns, a photovoltaic module is provided on the main shaft, the two adjacent main shafts are connected by a connecting shaft, the connecting shaft is fixed on the column, the upper end surface of the column is the column mounting surface, a through hole is provided in the upper part of the column, a connecting shaft is installed in the through hole through a bearing structure, the cross-sectional area of ​​the connecting shaft is smaller than the cross-sectional area of ​​the main shaft, and the connecting shaft is connected to the main shaft through a shaft connection structure; the photovoltaic module is installed in a photovoltaic module frame, the photovoltaic module frame is fixed to a crossbeam through a pressing block, the crossbeam is fixed to the main shaft, an open groove is provided above the crossbeam, a pad is installed above the crossbeam, a grounding pad is installed on the pad, a fastening device is provided below the pad, and the pressing block fixes the photovoltaic module frame to the grounding pad through the fastening device.

[0004] The above invention is to open a through hole on the column, install the connecting shaft in the through hole through the bearing structure, perform pre-installation first, and then drive the entire column assembly into place through a pile driver. Because the through hole is opened in the upper part of the column, the through hole is perpendicular to the length direction of the column, and the force-bearing surface of the column during installation is not changed, which saves time and effort during installation. The cross-section of the main shaft is relatively large, which is convenient for fixing and installing photovoltaic components. The cross-section of the main shaft is similar to the width of the column, and the cross-section of the connecting shaft is smaller than the main shaft, which is convenient for installing the connecting shaft into the through hole on the column. However, the above installation process needs to be completed through two steps of pre-installation and re-installation, which has certain requirements on installation accuracy. If installation problems occur during pre-installation, the re-installation step will be completely unable to continue, which leads to poor installation reliability and installation continuity.

[0005] A Chinese patent with application number CN 201320572182.0 discloses a single-drive dual-axis photovoltaic tracking bracket, including a controller, a bottom rod, a main shaft, a rocker arm, a main shaft support rod, a fixed seat A, and a fixed seat B. The controller is connected to the main shaft through the bottom rod and the rocker arm. One end of the main shaft is movably mounted on the fixed seat A, and the other end is movably mounted on the fixed seat B through the main shaft support rod. A fixed rod is provided on the main shaft support rod. At least two transverse rods are provided on the main shaft, and at least four longitudinal rods are provided on the transverse rod; the adjacent longitudinal rods on both sides of the main shaft are connected to the longitudinal connecting rod through a hinge seat; the transverse rod is connected to the linkage rod through the connecting rod, the tail end of the linkage rod is movably connected to the position rod, the position rod is movably connected to the seasonal rod, the seasonal rod is fixed to the fixed rod, a screw rod is provided inside the seasonal rod, and the screw rod is connected to the handwheel.

[0006] The above patent introduces a folding structure in the photovoltaic tracker, which can realize the horizontal axis tracking in the east-west direction of the dual axis, as well as the pitch tracking in the up-down direction, and can realize multi-axis linkage; however, the angle between the main axis and the longitudinal rod in the above patent is still fixed, and it cannot be adaptively adjusted according to the shape of the photovoltaic module, and the application range of the photovoltaic tracker bracket is relatively narrow.

[0007] The Chinese patent CN 203838566 U after authorization announcement discloses a foldable bracket for a photovoltaic tracker, including a crossbeam, two ends of which are hinged with columns, the length of the crossbeam is greater than the length of the column, the distance between the hinge point of the crossbeam and one of the columns is greater than the distance between the hinge point of the crossbeam and the other column, a support plate mounting seat is fixed on the crossbeam, a fixing plate is hinged on the column, and the other end of the fixing plate is hinged on the crossbeam; the crossbeam and the column form a "door"-shaped support structure, the two ends of the crossbeam are respectively connected to the columns on both sides through connecting pieces, one end of the connecting piece is welded to the crossbeam, and the other end of the connecting piece is hinged to the column, and the length of one of the two connecting pieces is less than the length of the other connecting piece; the column is connected to an "eight"-shaped support leg, two mutually parallel reinforcing plates are arranged between the two support rods constituting the support leg, and three fastening points are arranged on the reinforcing plate, the first fastening point is hinged to one of the support rods, the second fastening point is hinged to the column, and the third fastening point is hinged to the other support rod.

[0008] The above patent provides a foldable, small-sized, easy-to-transport and pre-installed bracket component for a photovoltaic tracker; it solves the technical problems in the prior art that the photovoltaic module tracker is large in size, difficult to construct on site, and inconvenient to install and carry; however, in order to achieve the foldable function, the above patent requires welding one end of the connector to the beam, and stress concentration will form at the welding position. The beam is prone to stress deformation after long-term use, which will cause the support of the bracket to be unstable; in addition, although the beam and the column are connected as a whole by the connector, the column cannot provide effective rigid support for the beam, and therefore, a fixing plate needs to be added to the beam and the column to achieve effective support of the beam by the column, which increases the complexity of the device to a certain extent and brings inconvenience to the on-site bracket installation. Summary of the invention

[0009] In order to overcome the technical problems in the prior art that the photovoltaic tracker support structure can only support photovoltaic modules of a fixed shape and cannot be adaptively adjusted according to the different shapes of different photovoltaic modules, and the photovoltaic tracker support structure is troublesome to install and has high construction costs, the present invention provides a photovoltaic tracker rotating folding beam. The photovoltaic tracker rotating folding beam makes the main axis and the secondary beam a foldable whole when leaving the factory, which can simplify the on-site installation operation. In addition, the angle between the main axis and the secondary beam can be adaptively adjusted according to the shape of the photovoltaic module, so that the same support structure can be used to support photovoltaic modules of different shapes.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions.

[0011] A photovoltaic tracker rotating folding beam comprises a main shaft and a secondary beam, wherein the secondary beam is movably connected to the main shaft via a mounting member arranged on the main shaft, an angle limiter for angularly positioning the secondary beam is arranged on the main shaft, the secondary beam can rotate relative to the main shaft along the circumference of the angle limiter, a first sliding member which can slide along its length direction is arranged on the main shaft, one end of a connecting rod is hinged on the first sliding member, and the other end of the connecting rod is hinged to a second sliding member on the secondary beam which can slide along its length direction.

[0012] In a photovoltaic tracker, the main shaft and multiple secondary beams on the main shaft cooperate to form a bracket to support the photovoltaic module; wherein the main shaft and the secondary beams support the photovoltaic module on the one hand, and disperse various loads on the other hand. When the shape, size or mass distribution of the photovoltaic module changes, the angle between the main shaft and the secondary beam and the position distribution of multiple secondary beams on the main shaft need to be adjusted accordingly; on the one hand, the shape of the bracket and the photovoltaic module are matched to prevent the photovoltaic module from being unable to be installed on the bracket due to shape and size mismatch; on the other hand, the load on the main shaft and the secondary beam is evenly dispersed, the secondary beam distribution is dense at the location where the mass of the photovoltaic module is concentrated, and the secondary beam distribution is dispersed at the location where the mass of the photovoltaic module is dispersed, thereby preventing a certain section of the secondary beam from breaking due to excessive load. In the bracket of a traditional photovoltaic tracker, the angle between the secondary beam and the main shaft is fixed after the initial installation. When the shape of the photovoltaic module changes, the angle between the secondary beam and the main shaft cannot be adaptively adjusted according to the shape of the photovoltaic module in most cases, or, although the angle between the secondary beam and the main shaft can be adjusted twice, the adjustment process requires the original bracket structure to be disassembled and then assembled, wasting a lot of labor resources. In the present invention, the secondary beam is movably connected to the main shaft through a mounting part arranged on the main shaft, and an angle limiter is arranged on the main shaft for angular positioning of the secondary beam. The secondary beam can rotate relative to the main shaft along the circumference of the angle limiter. When the angle between the main shaft and the secondary beam needs to be adjusted, the secondary beam can be rotated along the circumference of the angle limiter. Furthermore, the mounting part can be movable on the main shaft. When the mass distribution of the photovoltaic module is uneven, the spacing between the multiple secondary beams arranged on the main shaft can be adjusted. The secondary beams at the positions where the mass of the photovoltaic module is concentrated are distributed densely, and the secondary beams at the positions where the mass of the photovoltaic module is dispersed are distributed dispersedly. The secondary beam arranged on the main shaft can adjust the angle between it and the main shaft on the one hand, and can slide along the length direction of the main shaft on the other hand. The arrangement of the main shaft and the secondary beams can be changed, so that the same bracket structure can be used to support photovoltaic modules of different shapes. In addition, due to the consideration of transportation space, most traditional photovoltaic tracker brackets are installed on-site, and the installation process is relatively complicated, and the installation reliability is difficult to guarantee; in the present invention, the secondary beam and the main shaft are fitted together to form a folding structure when leaving the factory. During on-site installation, the secondary beam only needs to be arranged and positioned according to the photovoltaic components. The installation process is extremely simple and can effectively guarantee the installation accuracy. In the present invention, a first sliding member that can slide along its length is provided on the main shaft, and one end of a connecting rod is hinged on the first sliding member, and the other end of the connecting rod is hinged to a second sliding member on the secondary beam that can slide along its length; in the positioning stage of the secondary beam, the connecting rod links the two separate components of the secondary beam and the main shaft. When the positioning of the secondary beam is completed, the first sliding member and the second sliding member are fixed to the main shaft and the secondary beam respectively. The connecting rod can support the secondary beam to prevent the secondary beam from being offset due to the unstable connection of the mounting member.

[0013] Preferably, the angle limiter comprises a first planar segment, an arc segment and a second planar segment connected in sequence, an arc segment is provided with an arc groove along its length direction, the secondary beam can slide in the arc groove along the circumference of the angle limiter, and the first planar segment and the second planar segment are both fixedly connected to the main shaft.

[0014] The angle limiter in the present invention comprises a first plane segment, an arc segment and a second plane segment connected in sequence, the first plane segment and the second plane segment are both fixedly connected to the main shaft, the angle limiter is fixedly connected to the main shaft, an arc groove is provided on the arc segment along its length direction, the secondary beam can slide in the arc groove along the circumference of the angle limiter, the range of the angle between the secondary beam and the main shaft is consistent with the circumferential angle range of the arc groove, and along the circumference of the arc segment, the two ends of the arc groove are the maximum value positions of the angle between the secondary beam and the main shaft.

[0015] Preferably, a first mounting hole is provided on the first planar section, and a second mounting hole is provided on the second planar section. The bolt cooperates with the first mounting hole to fix the first planar section to the main shaft, and the bolt cooperates with the second mounting hole to fix the second planar section to the main shaft.

[0016] The first plane section and the second plane section are both fixedly connected to the main shaft via bolts, thereby achieving a fixed connection between the angle limiter and the main shaft.

[0017] Preferably, a first mounting groove is provided on the first plane section along the axial direction of the angle limiter, and a second mounting groove is provided on the second plane section along the axial direction of the angle limiter. The cable tie cooperates with the first mounting groove to fix the first plane section to the main shaft, and the cable tie cooperates with the second mounting groove to fix the second plane section to the main shaft.

[0018] The first plane section and the second plane section are both fixedly connected to the main shaft by cable ties. When a plurality of secondary beams are connected to the main shaft and the spacing between the secondary beams needs to be adjusted, the cable ties are loosened, and the secondary beams are fixed again with the cable ties after the secondary beams are moved.

[0019] Preferably, the mounting member comprises a body and a flange, the body is sleeved on the main shaft, the flange comprises two U-shaped mounting plates spaced apart, and the connecting end of the secondary beam and the main shaft is located in a gap formed by the two mounting plates.

[0020] The mounting member includes a body and a flange, and the body is sleeved on the main shaft, and the connection method between the body and the main shaft is not limited. When the body is fixedly connected to the main shaft, the first plane section and the second plane section of the angle limiter are fixedly connected to the main shaft by bolts, the angle between the secondary beam and the main shaft is adjustable, and the relative position between the multiple secondary beams is not adjustable; when the body is movably connected to the main shaft, the first plane section and the second plane section of the angle limiter are fixedly connected to the main shaft by cable ties, the angle between the secondary beam and the main shaft is adjustable, and after the cable ties are loosened, the relative position between the multiple secondary beams can also be adjusted. Through the division of the connection method between the body and the main shaft, the arrangement method of the secondary beam and the main shaft is further subdivided, so that it can be selected according to the application occasion. In addition, the two U-shaped mounting plates are arranged at intervals, and the connection end of the secondary beam and the main shaft is located in the gap formed by the two mounting plates.

[0021] Preferably, a third mounting hole is provided on each of the two mounting plates, a fourth mounting hole is provided at the connecting end between the secondary beam and the main shaft, and bolts pass through the third mounting hole and the fourth mounting hole to fix the secondary beam to the main shaft.

[0022] In the present invention, after the angle between the secondary beam and the main shaft is adjusted, bolts are passed through the third mounting hole and the fourth mounting hole to fix the secondary beam to the main shaft, thereby limiting the position of the secondary beam and preventing it from continuing to rotate.

[0023] Preferably, the first sliding member is provided with a first positioning hole, and the main shaft is provided with a plurality of second positioning holes along its length direction. A bolt passes through the first positioning hole and cooperates with a second positioning hole to fix the first sliding member on the main shaft.

[0024] The first sliding member can slide along the length direction of the main shaft. When the angle between the secondary beam and the main shaft is adjusted, a bolt passes through the first positioning hole and cooperates with a second positioning hole to fix the first sliding member on the main shaft. The number and interval of the second positioning holes are not fixed, so that the first sliding member can be fixed at different positions on the main shaft.

[0025] Preferably, the second sliding member is provided with a third positioning hole, and the secondary beam is provided with a plurality of fourth positioning holes along its length direction. A bolt passes through the third positioning hole and cooperates with a fourth positioning hole to fix the second sliding member on the secondary beam.

[0026] The second sliding member can slide along the length direction of the secondary beam. When the angle between the secondary beam and the main axis is adjusted, the bolt passes through the third positioning hole and cooperates with a fourth positioning hole to fix the second sliding member on the secondary beam. The number and interval of the fourth positioning holes are not fixed, so that the second sliding member can be fixed at different positions on the secondary beam.

[0027] Combining the above two technical solutions, when the first sliding member moves away from the angle limiter along the length direction of the main shaft, the second sliding member approaches the angle limiter along the length direction of the secondary beam. When the angle between the secondary beam and the main shaft is adjusted, the first sliding member and the second sliding member are moved to appropriate positions and fixed, so that the connecting rod can strengthen the secondary beam and the main shaft.

[0028] A method for installing a rotating folding beam of a photovoltaic tracker comprises the following steps:

[0029] (1) Sleeve the main body of the mounting part onto the main shaft. The number of mounting parts should be consistent with the number of secondary beams that need to be connected to the main shaft.

[0030] (2) Connect the angle limiter to the main shaft. Along the length direction of the main shaft, the first plane section and the second plane section are located on both sides of the main body respectively. Along the vertical direction of the main shaft, the flange of the mounting piece is located between the arc section of the angle limiter and the main shaft. The arc groove on the arc section is aligned with the gap formed by the two U-shaped mounting plates. The number of angle limiters is consistent with the number of secondary beams that need to be connected to the main shaft.

[0031] (3) Pass one end of the secondary beam through the arc groove and place it in the gap formed by the two U-shaped mounting plates. Connect the secondary beam and the flange with bolts. Do not tighten the bolts at this time.

[0032] (4) The first sliding member and the second sliding member are movably connected to the main shaft and the secondary beam respectively, and the two ends of the connecting rod are hinged to the first sliding member and the second sliding member respectively;

[0033] (5) The secondary beam is rotated along the circumferential direction of the arc segment. At this time, the first sliding member and the second sliding member slide along the main axis and the secondary beam respectively. After the angle between the secondary beam and the main axis is determined, the bolts connecting the secondary beam and the flange are tightened;

[0034] (6) The bolt passes through the first positioning hole and a second positioning hole on the main shaft to fix the first sliding member on the main shaft, and the bolt passes through the third positioning hole and a fourth positioning hole on the secondary beam to fix the second sliding member on the secondary beam.

[0035] In summary, the present invention has the following beneficial effects: (1) When the photovoltaic tracker bracket leaves the factory, the secondary beam and the main axis are fitted together to form a folding structure. During on-site installation, it is only necessary to arrange and position the secondary beam according to the photovoltaic module. The installation process is extremely simple and can effectively ensure the installation accuracy. (2) The angle between the main axis and the secondary beam and the spacing between multiple secondary beams can be adaptively adjusted according to the shape of the photovoltaic module, so that the same bracket structure can be used to support photovoltaic modules of different shapes and different mass distributions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is the first structural schematic diagram of the whole of the present invention.

[0037] Figure 2 It is the second structural schematic diagram of the whole of the present invention.

[0038] Figure 3 It is the third structural schematic diagram of the whole of the present invention.

[0039] Figure 4 It is a schematic diagram of Example 2 of the present invention.

[0040] Figure 5 It is another schematic diagram of Example 2 of the present invention.

[0041] Figure 6 It is a schematic diagram of Example 3 of the present invention.

[0042] Figure 7 It is another schematic diagram of Example 3 of the present invention.

[0043] In the figure:

[0044] 1. Main shaft, 2. Secondary beam, 3. Mounting part, 31. Main body, 32. Flange, 4. Angle limiter, 41. First plane section, 42. Arc section, 421. Arc groove, 43. Second plane section, 5. First sliding part, 6. Second sliding part, 7. Connecting rod, 8. Mounting plate, 9. Articulated bolt, 10. "J" clamp, 11. Clamp bolt. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 7 As shown, a photovoltaic tracker rotating folding beam comprises a main shaft 1 and a secondary beam 2, wherein the secondary beam is movably connected to the main shaft via a mounting member 3 arranged on the main shaft, an angle limiter 4 for angularly positioning the secondary beam is arranged on the main shaft, the secondary beam can rotate relative to the main shaft along the circumference of the angle limiter, a first sliding member 5 which can slide along its length direction is arranged on the main shaft, one end of a connecting rod 7 is hinged on the first sliding member, and the other end of the connecting rod is hinged to a second sliding member 6 which can slide along its length direction on the secondary beam; the angle limiter comprises a first sliding member 5 which can slide along its length direction on the main shaft, and a second sliding member 6 which can slide along its length direction on the secondary beam is hinged on the first sliding member; the angle limiter comprises a first sliding member 5 which can slide along its length direction on the main shaft, and a second sliding member 6 which can slide along its length direction on the secondary beam is hinged on the first sliding member; the angle limiter comprises a first sliding member 5 which can slide along its length direction on the main shaft, and a second sliding member 6 which can slide along its length direction on the secondary beam is hinged on the second ... The first plane section 41, the arc section 42 and the second plane section 43 are connected to each other. The arc section is provided with an arc groove 421 along its length direction. The secondary beam can slide in the arc groove along the circumference of the angle limiter. The first plane section and the second plane section are both fixedly connected to the main shaft; the first plane section is provided with a first mounting hole, and the second plane section is provided with a second mounting hole. The bolt cooperates with the first mounting hole to fix the first plane section to the main shaft, and the bolt cooperates with the second mounting hole to fix the second plane section to the main shaft; along the angle of the first plane section A first mounting groove is axially provided on the limiter, and a second mounting groove is axially provided on the second plane section along the angle limiter. The cable tie cooperates with the first mounting groove to fix the first plane section to the main shaft, and the cable tie cooperates with the second mounting groove to fix the second plane section to the main shaft; the mounting member includes a main body 31 and a flange 32, the main body is sleeved on the main shaft, the flange includes two U-shaped mounting plates 8 arranged at intervals, and the connecting end of the secondary beam and the main shaft is located in the gap formed by the two mounting plates; a third mounting hole is provided on both mounting plates, and a fourth mounting hole is provided at the connecting end of the secondary beam and the main shaft, and the bolt passes through the third mounting hole and the fourth mounting hole to fix the secondary beam to the main shaft; a first positioning hole is provided on the first sliding member, and a plurality of second positioning holes are provided on the main shaft along its length direction, and the bolt passes through the first positioning hole and cooperates with a second positioning hole to fix the first sliding member on the main shaft; a third positioning hole is provided on the second sliding member, and a plurality of fourth positioning holes are provided on the secondary beam along its length direction, and the bolt passes through the third positioning hole and cooperates with a fourth positioning hole to fix the second sliding member on the secondary beam.

[0049] The present invention also introduces a method for installing a rotating folding beam of a photovoltaic tracker, comprising the following steps:

[0050] (1) Sleeve the main body of the mounting part onto the main shaft. The number of mounting parts should be consistent with the number of secondary beams that need to be connected to the main shaft.

[0051] (2) Connect the angle limiter to the main shaft. Along the length direction of the main shaft, the first plane section and the second plane section are located on both sides of the main body respectively. Along the vertical direction of the main shaft, the flange of the mounting piece is located between the arc section of the angle limiter and the main shaft. The arc groove on the arc section is aligned with the gap formed by the two U-shaped mounting plates. The number of angle limiters is consistent with the number of secondary beams that need to be connected to the main shaft.

[0052] (3) Pass one end of the secondary beam through the arc groove and place it in the gap formed by the two U-shaped mounting plates. Connect the secondary beam and the flange with bolts. Do not tighten the bolts at this time.

[0053] (4) The first sliding member and the second sliding member are movably connected to the main shaft and the secondary beam respectively, and the two ends of the connecting rod are hinged to the first sliding member and the second sliding member respectively;

[0054] (5) The secondary beam is rotated along the circumferential direction of the arc segment. At this time, the first sliding member and the second sliding member slide along the main axis and the secondary beam respectively. After the angle between the secondary beam and the main axis is determined, the bolts connecting the secondary beam and the flange are tightened;

[0055] (6) The bolt passes through the first positioning hole and a second positioning hole on the main shaft to fix the first sliding member on the main shaft, and the bolt passes through the third positioning hole and a fourth positioning hole on the secondary beam to fix the second sliding member on the secondary beam.

[0056] Embodiment 1:

[0057] like Figures 1 to 3 As shown, the cross-sections of the main shaft and the secondary beam are both rectangular, and the secondary beam is movably connected to the main shaft through a mounting piece provided on the main shaft. The mounting piece includes a main body and a flange, the main body is an annular cylinder, the inner ring of the main body is sleeved on the main shaft, and the flange includes two U-shaped mounting plates arranged at intervals, along the length direction of the mounting plate, the mounting plate includes a plane end and an arc end, the plane end of the mounting plate is fixedly connected to the main body of the mounting piece, or is integrally processed with the main body of the mounting piece. A third mounting hole is provided on each of the two mounting plates, the axes of the two third mounting holes are colinear and concentric with the arc end of the mounting plate, a fourth mounting hole is provided at the connecting end of the secondary beam and the main shaft, and the connecting end of the secondary beam and the main shaft is located in the gap formed by the two mounting plates, and the bolts passing through the third mounting hole and the fourth mounting hole can connect the main shaft and the secondary beam.

[0058] The main shaft is provided with an angle limiter for angular positioning of the secondary beam, and the angle limiter includes a first plane section, an arc section and a second plane section connected in sequence, and an arc groove is provided on the arc section along its length direction. When the secondary beam does not need to move along the length direction of the main shaft, a first mounting hole is provided on the first plane section, and a second mounting hole is provided on the second plane section. The bolt cooperates with the first mounting hole to fix the first plane section to the main shaft, and the bolt cooperates with the second mounting hole to fix the second plane section to the main shaft. The secondary beam passes through the arc groove to connect with the mounting piece on the main shaft, and the body of the mounting piece is fixedly sleeved on the main shaft. Since the angle limiter and the mounting piece are fixed on the main shaft and cannot move, the secondary beam can only rotate relative to the main shaft and cannot move along the main shaft. When the secondary beam needs to adjust the angle between it and the main shaft and needs to move along the length direction of the main shaft, a first mounting groove is provided on the first plane section along the axial direction of the angle limiter, and a second mounting groove is provided on the second plane section along the axial direction of the angle limiter. The cable tie cooperates with the first mounting groove to fix the first plane section to the main shaft, and the cable tie cooperates with the second mounting groove to fix the second plane section to the main shaft. The secondary beam passes through the arc groove to be connected to the mounting piece on the main shaft, and the body of the mounting piece is movably sleeved on the main shaft. Furthermore, a positioning hole can be added on the body of the mounting piece, and the fixation and movement of the mounting piece body on the main shaft can be achieved by tightening and loosening the bolts.

[0059] In a photovoltaic tracker, the main shaft and multiple secondary beams on the main shaft cooperate to form a bracket to support the photovoltaic module; wherein the main shaft and the secondary beams support the photovoltaic module on the one hand, and disperse various loads on the other hand. When the shape, size or mass distribution of the photovoltaic module changes, the angle between the main shaft and the secondary beam and the position distribution of multiple secondary beams on the main shaft need to be adjusted accordingly; on the one hand, the shape of the bracket and the photovoltaic module are matched to prevent the photovoltaic module from being unable to be installed on the bracket due to shape and size mismatch; on the other hand, the load on the main shaft and the secondary beam is evenly dispersed, the secondary beam distribution is dense at the location where the mass of the photovoltaic module is concentrated, and the secondary beam distribution is dispersed at the location where the mass of the photovoltaic module is dispersed, thereby preventing a certain section of the secondary beam from breaking due to excessive load. In the bracket of a traditional photovoltaic tracker, the angle between the secondary beam and the main shaft is fixed after the initial installation. When the shape of the photovoltaic module changes, the angle between the secondary beam and the main shaft cannot be adaptively adjusted according to the shape of the photovoltaic module in most cases, or, although the angle between the secondary beam and the main shaft can be adjusted twice, the adjustment process requires the original bracket structure to be disassembled and then assembled, wasting a lot of labor resources. In this embodiment, the secondary beam is movably connected to the main shaft through a mounting part arranged on the main shaft, and an angle limiter is arranged on the main shaft for angular positioning of the secondary beam. The secondary beam can rotate relative to the main shaft along the circumference of the angle limiter. When the angle between the main shaft and the secondary beam needs to be adjusted, the secondary beam can be rotated along the circumference of the angle limiter. Furthermore, the mounting part can be movable on the main shaft. When the mass distribution of the photovoltaic module is uneven, the spacing between the multiple secondary beams arranged on the main shaft can be adjusted. The secondary beams at the location where the mass of the photovoltaic module is concentrated are distributed densely, and the secondary beams at the location where the mass of the photovoltaic module is dispersed are distributed dispersedly. The secondary beam arranged on the main shaft can adjust the angle between it and the main shaft on the one hand, and can slide along the length direction of the main shaft on the other hand. The arrangement of the main shaft and the secondary beams can be changed, so that the same bracket structure can be used to support photovoltaic modules of different shapes. In addition, due to considerations of transportation space, most traditional photovoltaic tracker brackets are installed on-site, the installation process is relatively complicated, and the installation reliability is difficult to guarantee. In the present invention, the secondary beam and the main shaft are fitted together to form a folded structure when leaving the factory. During on-site installation, it is only necessary to arrange and position the secondary beam according to the photovoltaic components. The installation process is extremely simple and can effectively guarantee the installation accuracy.

[0060] The main shaft is provided with a first sliding member that can slide along its length direction, and one end of the connecting rod is hinged on the first sliding member, and the other end of the connecting rod is hinged with the second sliding member on the secondary beam that can slide along its length direction; in the positioning stage of the secondary beam, the connecting rod connects the two separate components of the secondary beam and the main shaft. When the positioning of the secondary beam is completed, the first sliding member and the second sliding member are respectively fixed to the main shaft and the secondary beam, and the connecting rod can support the secondary beam to prevent the secondary beam from being offset due to the unstable connection of the mounting member. The first sliding member is provided with a first positioning hole, and the main shaft is provided with a plurality of second positioning holes along its length direction. The first sliding member can be fixed to the main shaft by bolts passing through the first positioning hole and a second positioning hole; the second sliding member is provided with a third positioning hole, and the secondary beam is provided with a plurality of fourth positioning holes along its length direction. The second sliding member can be fixed to the secondary beam by bolts passing through the third positioning hole and a fourth positioning hole. The first sliding member can slide along the length direction of the main shaft. When the angle between the secondary beam and the main shaft is adjusted, the bolt passes through the first positioning hole and cooperates with a second positioning hole to fix the first sliding member on the main shaft. The number and interval of the second positioning holes are not fixed, so that the first sliding member can be fixed at different positions on the main shaft. The second sliding member can slide along the length direction of the secondary beam. When the angle between the secondary beam and the main shaft is adjusted, the bolt passes through the third positioning hole and cooperates with a fourth positioning hole to fix the second sliding member on the secondary beam. The number and interval of the fourth positioning holes are not fixed, so that the second sliding member can be fixed at different positions on the secondary beam. When the first sliding member moves away from the angle limiter along the length direction of the main shaft, the second sliding member approaches the angle limiter along the length direction of the secondary beam. When the angle between the secondary beam and the main shaft is adjusted, the first sliding member and the second sliding member are moved to appropriate positions and fixed, so that the connecting rod can strengthen the secondary beam and the main shaft.

[0061] Embodiment 2:

[0062] When the angle between the secondary beam and the main axis is always fixed and the secondary beam does not need to move along the main axis, it is sufficient to fix the main axis and the secondary beam. This embodiment provides a connection structure between the secondary beam and the main axis.

[0063] like Figure 4 and Figure 5As shown, the main shaft and the secondary beam are connected by an articulated bolt 9. The cross section of the main shaft is rectangular, the cross section of the secondary beam is U-shaped, and the axis of the secondary beam is perpendicular to the axis of the main shaft. A through mounting hole is provided on the main shaft along its thickness direction, and a mounting hole is also provided on the side plane of the secondary beam. The articulated bolt passes through the mounting hole to connect the main shaft and the secondary beam. In this embodiment, when leaving the factory, the main shaft and the secondary beam are connected by an articulated bolt, and the bolt does not need to be tightened. After the main shaft and the secondary beam are rotated, the axes of the two are ensured to be parallel, thereby forming an integrated folding structure. At the construction site, the main shaft and the secondary beam are rotated and separated with the articulated bolt as the axis. After determining the angle between the secondary beam and the main shaft, the articulated bolt is tightened to limit the main shaft and the secondary beam. The structure described in this embodiment is suitable for working conditions where the angle between the secondary beam and the main shaft and the spacing between multiple secondary beams do not need to be adjusted. The integrated folding structure is easy to transport, simple to install on site, and reliable in structure.

[0064] Embodiment 3:

[0065] When the angle between the secondary beam and the main axis is always fixed and the secondary beam does not need to move along the main axis, it is sufficient to fix the main axis and the secondary beam. This embodiment provides a connection structure between the secondary beam and the main axis.

[0066] like Figure 6 and Figure 7 As shown, the cross section of the main shaft is rectangular, the cross section of the secondary beam is U-shaped, and the axis of the secondary beam is perpendicular to the axis of the main shaft; a through mounting hole is provided on the main shaft along its thickness direction; three mounting holes are provided on the side plane of the secondary beam along the length direction of the secondary beam, and the three mounting holes are evenly spaced. The "J" clamp 10 connects the main shaft and the secondary beam. The "J" clamp includes a plane section and a groove section, wherein the groove section matches the cross-sectional shape of the main shaft, and the plane section fits the side plane of the secondary beam. Mounting holes are provided on the bottom surface and the plane section of the groove, and the clamp bolt 11 connects the plane section of the "J" clamp with the secondary beam, and the hinge bolt fits the groove section of the "J" clamp on the main shaft and connects the main shaft with the secondary beam. In this embodiment, when leaving the factory, the hinge bolts connect the main shaft and the secondary beam, and the hoop bolts connect the plane section of the "J" hoop with the secondary beam, and neither the hinge bolts nor the hoop bolts need to be tightened; after the main shaft and the secondary beam are rotated, the axes of the two are ensured to be parallel, thereby forming an integrated folding structure; at the construction site, the main shaft and the secondary beam are rotated and separated with the hinge bolts as the axis, and after the angle between the secondary beam and the main shaft is determined, the hinge bolts are tightened first, and then the hoop bolts are tightened, thereby limiting the main shaft and the secondary beam. The structure described in this embodiment is suitable for working conditions where the angle between the secondary beam and the main shaft and the spacing between multiple secondary beams do not need to be adjusted. The integrated folding structure is easy to transport, simple to install on site, and reliable in structure; in addition, the groove section of the hoop bolt provides support for the main shaft, thereby making the connection between the main shaft and the secondary beam more stable.

Claims

1. A photovoltaic tracker rotating folding beam, comprising a main axis and a secondary beam, characterized in that: The secondary beam is movably connected with the main shaft through a mounting piece arranged on the main shaft, and an angle limiter for angular positioning of the secondary beam is provided on the main shaft, and the secondary beam can rotate relative to the main shaft along the circumferential direction of the angle limiter, and a first sliding piece which can slide along its length direction is provided on the main shaft, and one end of a connecting rod is hinged on the first sliding piece, and the other end of the connecting rod is hinged to a second sliding piece on the secondary beam which can slide along its length direction; the angle limiter includes an arc segment, and an arc groove is provided on the arc segment along its length direction, and the secondary beam can slide in the arc groove along the circumferential direction of the angle limiter, and the mounting piece includes a flange, and the flange includes two U-shaped mounting plates arranged at intervals, and the connecting end of the secondary beam and the main shaft is located in a gap formed by the two mounting plates, and the secondary beam arranged on the main shaft can slide along the length direction of the main shaft.

2. A photovoltaic tracker rotating folding beam according to claim 1, characterized in that: The angle limiter comprises a first plane segment, an arc segment and a second plane segment which are connected in sequence, and the first plane segment and the second plane segment are both fixedly connected to the main shaft.

3. The photovoltaic tracker rotating folding beam according to claim 2, characterized in that: The first plane section is provided with a first mounting hole, the second plane section is provided with a second mounting hole, the bolt cooperates with the first mounting hole to fix the first plane section with the main shaft, and the bolt cooperates with the second mounting hole to fix the second plane section with the main shaft.

4. The photovoltaic tracker rotating folding beam according to claim 2, characterized in that: A first mounting groove is provided on the first plane section along the axial direction of the angle limiter, and a second mounting groove is provided on the second plane section along the axial direction of the angle limiter. The cable tie cooperates with the first mounting groove to fix the first plane section to the main shaft, and the cable tie cooperates with the second mounting groove to fix the second plane section to the main shaft.

5. The photovoltaic tracker rotating folding beam according to claim 1, characterized in that: The mounting piece also includes a body, which is sleeved on the main shaft.

6. The photovoltaic tracker rotating folding beam according to claim 5, characterized in that: A third mounting hole is provided on each of the two mounting plates, a fourth mounting hole is provided at the connecting end of the secondary beam and the main shaft, and bolts pass through the third mounting hole and the fourth mounting hole to fix the secondary beam and the main shaft.

7. A photovoltaic tracker rotating folding beam according to claim 1, 2 or 5, characterized in that: The first sliding member is provided with a first positioning hole, and the main shaft is provided with a plurality of second positioning holes along its length direction. The bolt passes through the first positioning hole and a second positioning hole to fix the first sliding member on the main shaft.

8. The photovoltaic tracker rotating folding beam according to claim 7, characterized in that: The second sliding member is provided with a third positioning hole, and the secondary beam is provided with a plurality of fourth positioning holes along its length direction. Bolts passing through the third positioning hole and a fourth positioning hole can fix the second sliding member on the secondary beam.

9. A method for installing a photovoltaic tracker rotating folding beam according to claim 8, characterized in that: The following steps are involved: (1) Sleeve the main body of the mounting piece onto the main shaft. The number of mounting pieces should be consistent with the number of secondary beams to be connected to the main shaft. (2) The angle limiter is connected to the main shaft. Along the length direction of the main shaft, the first plane section and the second plane section are respectively located on both sides of the main body. Along the vertical direction of the main shaft, the flange of the mounting piece is located between the arc section of the angle limiter and the main shaft. The arc groove on the arc section is aligned with the gap formed by the two U-shaped mounting plates. The number of angle limiters is consistent with the number of secondary beams that need to be connected to the main shaft. (3) Pass one end of the secondary beam through the arc groove and place it in the gap formed by the two U-shaped mounting plates. Connect the secondary beam and the flange with bolts. Do not tighten the bolts at this time. (4) The first sliding member and the second sliding member are movably connected to the main shaft and the secondary beam respectively, and the two ends of the connecting rod are hinged to the first sliding member and the second sliding member respectively; (5) The secondary beam is rotated along the circumference of the arc segment. At this time, the first sliding member and the second sliding member slide along the main axis and the secondary beam respectively. After the angle between the secondary beam and the main axis is determined, the bolts connecting the secondary beam and the flange are tightened; (6) The bolt passes through the first positioning hole and a second positioning hole on the main shaft to fix the first sliding member on the main shaft, and the bolt passes through the third positioning hole and a fourth positioning hole on the secondary beam to fix the second sliding member on the secondary beam.

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