FOLDABLE PHOTOELECTRIC MONITORING STAND AND TWO-AXIS PHOTOELECTRIC MONITORING DEVICE

Abstract

The invention relates to a foldable photovoltaic tracking mount, comprising a fixed mount, a first-stage drive mechanism, and a second-stage drive mechanism; the first-stage drive mechanism can drive the second-stage drive mechanism to rotate around the axis of rotation of the first-stage drive mechanism, thereby performing the rotational movement of the photovoltaic panel around the horizontal axis; the second-stage drive mechanism can drive the photovoltaic panel to rotate around the axis of rotation of the second-stage drive mechanism, thereby performing the rotational movement of the photovoltaic panel around the vertical axis; the moving part of the second-stage drive mechanism is fixedly linked to a clutch mechanism; when the clutch mechanism is engaged, the rotational movement of the moving part of the second-stage drive mechanism can drive the first and second photovoltaic panels to rotate synchronously;When the clutch mechanism is in the disengaged state, the rotational movement of the rotating part of the second-stage drive mechanism can drive the first photovoltaic panel to rotate relative to the second photovoltaic panel. The photovoltaic device of this invention simultaneously has both a tracking function and a folding function. This invention also relates to a tracking photovoltaic device with a folding function.

Description

A dual-axis tracking photovoltaic bracket and photovoltaic device with folding function Technical Field

[0001] The present invention relates to a photovoltaic power generation device, in particular to a foldable photovoltaic tracking bracket and a foldable photovoltaic tracking device. Background Art

[0002] Solar energy, as a clean, renewable energy source, has been increasingly used. Solar photovoltaic power generation equipment uses solar photovoltaic modules as photoelectric conversion devices to convert solar energy into electrical energy, thereby realizing the utilization of solar energy.

[0003] Currently, a common approach to increasing the power generation per unit time of photovoltaic systems is to maximize the size of the photovoltaic panels. For example, Chinese utility model patent CN216122306U discloses a photovoltaic system comprising multiple photovoltaic panels arranged linearly. This significantly increases the size of the panels, thereby significantly increasing power generation.

[0004] Another commonly used method to increase power generation is to use photovoltaic panels to track the sun. This is because the power generation of photovoltaic power generation equipment depends on the amount of solar radiation received by the photovoltaic panels. In order to improve the power generation efficiency of photovoltaic power generation equipment, it is necessary to always make the upper surface of the photovoltaic panel face the sun to ensure that the vertical irradiation area of ​​sunlight is maximized, thereby improving the photoelectric conversion efficiency. For example, Chinese invention patent document CN106130459B discloses a photovoltaic bracket that automatically tracks the optimal incident angle of sunlight. The photovoltaic bracket has an adaptive adjustment function for different longitudes and latitudes and time periods to ensure that sunlight is irradiated on the photovoltaic panel at the optimal incident angle.

[0005] Although this photovoltaic bracket can adjust the inclination and azimuth of the photovoltaic panel, its inclination tracking range is 0° to 110°, and its azimuth tracking range is -125° to +125°. Obviously, the angle adjustment range of this photovoltaic bracket is limited. In addition, the angle adjustment method of this photovoltaic bracket is not flexible enough. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a foldable photovoltaic tracking bracket, which can not only drive the photovoltaic panel to rotate around the horizontal axis, but also drive the photovoltaic panel to rotate around the vertical axis, so as to flexibly adjust the angle of the photovoltaic panel to ensure that sunlight is irradiated on the photovoltaic panel at the optimal incident angle; and the present invention can also be folded and folded.

[0007] To solve the above technical problems, the technical solution of the foldable photovoltaic tracking bracket of the present invention is:

[0008] A dual-axis tracking photovoltaic bracket with folding function includes:

[0009] Fixed bracket,

[0010] A primary drive mechanism, wherein the fixed member and the rotating member of the primary drive mechanism are capable of relative rotation; the fixed member of the primary drive mechanism is fixedly connected to the fixed bracket; and

[0011] A secondary drive mechanism, wherein the fixed member and the rotating member of the secondary drive mechanism are capable of relative rotation; the fixed member of the secondary drive mechanism is fixedly connected to the rotating member of the primary drive mechanism, and the rotating member of the secondary drive mechanism is used to fixedly connect to the photovoltaic panel;

[0012] The rotation axis of the primary drive mechanism extends in the transverse direction; the rotation axis of the secondary drive mechanism extends in the longitudinal direction;

[0013] The primary drive mechanism and / or the secondary drive mechanism also includes an intermediate piece, which is movably connected to the rotating piece, and a guiding connection is achieved between the intermediate piece and the rotating piece via a first guiding structure; the intermediate piece is movably connected to the fixed piece, and a guiding connection is achieved between the intermediate piece and the fixed piece via a second guiding structure.

[0014] The present invention also provides a foldable photovoltaic tracking device, the technical solution of which is:

[0015] It includes the above-mentioned dual-axis tracking photovoltaic bracket with folding function and photovoltaic panel, and the secondary driving mechanism of the dual-axis tracking photovoltaic bracket is connected to the photovoltaic panel;

[0016] When the rotating member of the primary drive mechanism rotates relative to its fixed member, the secondary drive mechanism and the photovoltaic panel fixedly connected thereto can be driven to rotate around the rotation axis of the primary drive mechanism, thereby realizing the rotation of the photovoltaic panel around the horizontal axis;

[0017] When the rotating member of the secondary drive mechanism and its fixed member rotate relative to each other, the photovoltaic panel can be driven to rotate around the rotation axis of the secondary drive mechanism, thereby realizing the rotation of the photovoltaic panel around the longitudinal axis.

[0018] The technical effects that can be achieved by the present invention are:

[0019] The photovoltaic device of the present invention has both tracking and folding functions, so the photovoltaic device of the present invention can be installed not only in wild wasteland, but also in cities and agricultural land without changing the use nature of the land, solving the installation problem of photovoltaic panels.

[0020] Specifically, when the photovoltaic device of the present invention is installed on agricultural land, the tracking angle of the photovoltaic panel is adjusted to provide shielding according to the light intensity required for growing vegetation on the agricultural land, thereby controlling the illumination time of the vegetation.

[0021] Therefore, on the one hand, the present invention can solve the problem of limited installation sites for existing photovoltaic equipment, and limit the installation range of existing photovoltaic equipment to wild wasteland, and expand it to allow installation on all land without affecting the original agricultural planting function of the land. This is of great significance to the farmland protection policy of guarding the 1.8 billion mu of farmland red line.

[0022] Furthermore, when installed on agricultural land, this invention not only converts solar energy into electricity for utilization but also improves agricultural economics. Specifically, when folded, the photovoltaic panels provide ample sunlight to plants, while when unfolded, they generate electricity. For shade-loving crops, the unfolded panels can also provide shade and protection, reducing water evaporation, optimizing the crop growth environment, and increasing agricultural yields.

[0023] At night, when photovoltaic tracking is not required, aligning the photovoltaic panels with the poles can minimize damage to the poles and other parts caused by the expansion of the photovoltaic panels. This reduces the horizontal lifting force and the pressure on the bracket and base, making the equipment more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Those skilled in the art will appreciate that the following description is merely illustrative of the principles of the present invention, which can be applied in a variety of ways to achieve many different alternative embodiments. These descriptions are intended only to illustrate the general principles of the teachings of the present invention and are not intended to limit the inventive concepts disclosed herein.

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the general description above and the detailed description of the drawings that follow, serve to explain the principles of the invention.

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

[0027] FIG1 is a schematic diagram of a first embodiment of a foldable photovoltaic tracking device according to the present invention;

[0028] FIG2 is an exploded view of a first embodiment of a foldable photovoltaic tracking device according to the present invention; FIG3 is a schematic diagram of the connection between a secondary drive mechanism and a trigger member according to the present invention;

[0029] 4 is an exploded schematic diagram of the secondary drive mechanism and the trigger member of the present invention; FIG5 is an exploded schematic diagram of the first embodiment of the drive mechanism of the present invention; FIG6 is a partially enlarged schematic diagram of the spiral rod of the present invention;

[0030] FIG7 is a schematic diagram of a second embodiment of a driving mechanism of the present invention;

[0031] 8 is an exploded schematic diagram of a second embodiment of the driving mechanism of the present invention. FIG9 is a schematic diagram of an embodiment of the clutch mechanism of the present invention;

[0032] FIG10 is a cross-sectional schematic diagram of an embodiment of the clutch mechanism of the present invention. FIG11 is an exploded schematic diagram of an embodiment of the clutch mechanism of the present invention.

[0033] FIG12 is a schematic diagram of a second embodiment of a foldable photovoltaic tracking device according to the present invention; the photovoltaic panel in the figure is in an unfolded state;

[0034] FIG13 is a schematic diagram of a second embodiment of a foldable photovoltaic tracking device according to the present invention; in the figure, the first photovoltaic panel assembly is in a folded and stowed state;

[0035] FIG14 is a schematic diagram of a second embodiment of a foldable photovoltaic tracking device according to the present invention; both sets of photovoltaic panel assemblies in the figure are in a folded and stowed state;

[0036] FIG15 is a schematic diagram of a second embodiment of a T-shaped structure of the present invention;

[0037] FIG. 16 is an exploded schematic diagram of a second embodiment of the T-shaped structure of the present invention.

[0038] Description of reference numerals in the figures:

[0039] 1 is the housing, 2 is the bearing, 3 is the fixed part, 4 is the moving part, 5 is the return spring, 6 is the cover, 7 is the lever, 8 is the bolt, 9 is the bolt,

[0040] 100 is the first photovoltaic panel, 200 is the second photovoltaic panel, 301 is the secondary drive mechanism, 400 is the primary drive mechanism, 500 is the fixed bracket, 600 is the vertical pole, 700 is the third photovoltaic panel, 800 is the fourth photovoltaic panel, 901 is the second primary drive mechanism, 900 is the second secondary drive mechanism, 501 is the lower support member, 502 is the upper support member, 503 is the first connecting arm, 504 is the second connecting arm, 401 is the first photovoltaic panel connector, 402 is the second photovoltaic panel connector, 101 is the first connecting ring of the first photovoltaic panel, 102 is the second connecting ring of the first photovoltaic panel, 201 is the first connecting ring of the second photovoltaic panel, 202 is the second connecting ring of the second photovoltaic panel, 302 is the first clutch mechanism, 303 is the second clutch mechanism, 304 is the first pull rod, 305 is the second pull rod, 306 is the trigger member, and 3061 are the two wings of the trigger member. 3062 is the trigger part of the trigger member, 1-1 is a groove, 4-1 is a protrusion, 6-1 is a positioning groove, 11 is a screw rod, 12 is a sliding sleeve, 13 is a mounting seat, 14 is a screw rod, 15 is a screw nut, 16 is a housing, 17 is a first bearing, 18 is a second bearing, 1101 are the two ends of the screw rod, 1102 are spiral protrusions, 1201 is a guide groove, 1202 is a spiral groove, 1203 is a screw nut positioning hole, and 1601 is a guide protrusion. 301-11 is a straight guide rod, 301-12 is a sleeve, 301-14 is a lead screw, 301-15 is a lead screw nut, 301-16 is a sleeve, 301-18 is a bearing, 301-1101 is a guide groove, 301-1201 is a threaded hole for the sleeve, 301-1501 is a threaded hole for the lead screw nut, and 301-1601 is a spiral groove. DETAILED DESCRIPTION

[0041] To further clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the technical solutions of the embodiments of the present invention will be described in detail below, in conjunction with the accompanying drawings. It should be understood that the described embodiments represent only a portion of the embodiments of the present invention, and not all of them. Based on the described embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. Unless otherwise defined, technical or scientific terms used herein should have the same ordinary meanings as those understood by persons of ordinary skill in the art to which the present invention pertains. As used herein, "first," "second," and similar terms do not denote any order, quantity, or importance; they are merely used to distinguish between different components. "Including" and similar terms mean that the element or object preceding the term includes the elements or objects listed after the term, and their equivalents, without excluding other elements or objects. "Connected" or "connected," and similar terms are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. "Up," "down," "left," "right," and the like are used only to indicate relative positional relationships. When the absolute position of the described objects changes, the relative positional relationships may also change accordingly.

[0042] As shown in FIG1 , a first embodiment of a foldable photovoltaic tracking device according to the present invention is shown. The dual-axis tracking photovoltaic device includes a vertical pole 600, a first photovoltaic panel 100, and a second photovoltaic panel 200. The vertical pole 600 extends vertically, and the upper end of the vertical pole 600 is fixedly connected to a fixing bracket 500. One side of the fixing bracket 500 is fixedly connected to a primary drive mechanism 400, and the rotation axis of the primary drive mechanism 400 extends horizontally. The primary drive mechanism 400 is connected to a secondary drive mechanism 301, and the rotation axis of the secondary drive mechanism 301 extends longitudinally. The primary drive mechanism 300 and the secondary drive mechanism 400 form a T-shaped structure. One side of the secondary drive mechanism 301 is fixedly connected to the inner side of the first photovoltaic panel 100, and the other side of the secondary drive mechanism 301 is fixedly connected to the inner side of the second photovoltaic panel 200.

[0043] The primary drive mechanism 400 includes a housing 16 and a screw rod 11. The screw rod 11 is capable of rotating relative to the housing 16. The primary drive mechanism 400 is capable of driving the secondary drive mechanism 301 and the first and second photovoltaic panels 100 and 200 fixedly connected thereto to rotate about the rotation axis (i.e., the horizontal axis) of the primary drive mechanism 400.

[0044] Specifically, as shown in FIG2 , the housing 16 of the primary drive mechanism 400 is fixedly connected to the fixed bracket 500; the lower portion of the housing 16 is movably connected to one end of the lower support member 501, and the upper portion of the housing 16 is movably connected to one end of the upper support member 502; the upper support member 502 and the lower support member 501 form a transmission mechanism fixed cover, one end of the transmission mechanism fixed cover wraps the middle portion of the housing 16, and the transmission mechanism fixed cover can rotate relative to the housing 16; the other end of the transmission mechanism fixed cover wraps the secondary drive mechanism 301, thereby realizing a movable connection between the secondary drive mechanism 301 and the housing 16 of the primary drive mechanism 400;

[0045] The first output end of the spiral rod 11 of the primary drive mechanism 400 is fixedly connected to one end of the first connecting arm 503, and the other end of the first connecting arm 503 is fixedly connected to the lower support member 501 and / or the upper support member 502; the second output end of the spiral rod 11 of the primary drive mechanism 400 is fixedly connected to one end of the second connecting arm 504, and the other end of the second connecting arm 504 is fixedly connected to the lower support member 501 and / or the upper support member 502; the spiral rod 11 of the primary drive mechanism 400 is fixedly connected to the secondary drive mechanism 301 through the first connecting arm 503 and the second connecting arm 504;

[0046] When the screw rod 11 of the primary drive mechanism 400 rotates relative to its housing 16, it can drive the secondary drive mechanism 301 to rotate relative to the housing 16 and the vertical rod 600 fixedly connected to the housing 16, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the horizontal axis;

[0047] The structure of the secondary drive mechanism 301 is the same as that of the primary drive mechanism 400 ; the secondary drive mechanism 301 can drive the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis (i.e., the longitudinal axis) of the secondary drive mechanism 301 ;

[0048] Specifically, the housing 16 of the secondary drive mechanism 301 is fixedly connected to the transmission mechanism fixed cover composed of the upper support member 502 and the lower support member 501; the first output end of the screw rod 11 of the secondary drive mechanism 301 is fixedly connected to the first clutch mechanism 302, and the second output end of the screw rod 11 of the secondary drive mechanism 301 is fixedly connected to the second clutch mechanism 303; the first clutch mechanism 302 is fixedly connected to the first connecting ring 101 of the first photovoltaic panel 100 and the first connecting ring 201 of the second photovoltaic panel 200, and the second clutch mechanism 303 is fixedly connected to the second connecting ring 102 of the first photovoltaic panel 100 and the second connecting ring 202 of the second photovoltaic panel 200, thereby realizing the connection between the screw rod 11 of the secondary drive mechanism 301 and the first photovoltaic panel 100 and the second photovoltaic panel 200;

[0049] When the spiral rod 11 of the secondary driving mechanism 301 rotates relative to its outer shell 16, it can drive the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate relative to the outer shell 16 of the secondary driving mechanism 301 and the transmission mechanism fixed cover fixedly connected to the outer shell 16, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis.

[0050] The primary drive mechanism 400 of the present invention can drive the photovoltaic panel to rotate around the horizontal axis, and the secondary drive mechanism 301 can drive the photovoltaic panel to rotate around the vertical axis. By controlling the primary drive mechanism 400 and the secondary drive mechanism 301 respectively, the angle of the photovoltaic panel can be adjusted at will, thereby ensuring that sunlight is irradiated onto the photovoltaic panel at the optimal incident angle to improve the photoelectric conversion efficiency.

[0051] As shown in Figure 3, the first clutch mechanism 302 is connected to one end of the first pull rod 304, the second clutch mechanism 303 is connected to one end of the second pull rod 305, and the other ends of the first pull rod 304 and the second pull rod 305 are connected to the same trigger member 306; the trigger member 306 has a trigger part and two connecting parts of the first pull rod 304 and the second pull rod 305 respectively; when the trigger part is subjected to force, it can transmit external force to the first pull rod 304 and the second pull rod 305 at the same time through the connecting part.

[0052] Preferably, the trigger member 306 is a T-shaped structure; the two wings 3061 of the trigger member 306 serve as connecting portions, and the trigger portion 3062 of the trigger member 306 forms a protrusion in a direction away from the secondary drive mechanism 301, as shown in FIG. 4 .

[0053] Specifically, the first clutch mechanism 302 has a fixed part 3 and a moving part 4. The moving part 4 can perform translational motion relative to the fixed part 3, so that its clutch state is switched; when the moving part 4 is close to the fixed part 3 and forms a transmission connection with the fixed part 3, the clutch mechanism is in a connected state; when the moving part 4 is away from the fixed part 3 and is disconnected from the transmission connection with the fixed part 3, the clutch mechanism is in a disconnected state.

[0054] The structure of the second clutch mechanism 303 is the same as that of the first clutch mechanism 302 and will not be described again here.

[0055] The first clutch mechanism 302 and the second clutch mechanism 303 are respectively fixedly connected to the two ends of the spiral rod 11 through their respective fixing parts 3, that is, the first clutch mechanism 302 is connected to one end of the spiral rod 11 through its fixing part 3, and the second clutch mechanism 303 is connected to the other end of the spiral rod 11 through its fixing part 3; when the first clutch mechanism 302 and the second clutch mechanism 303 are in a connected state, the rotation of the spiral rod 11 can drive the fixing part 3 and the moving part 4 of the first clutch mechanism 302 and the second clutch mechanism 303 to rotate synchronously; when the first clutch mechanism 302 and the second clutch mechanism 303 are in a separated state, the rotation of the spiral rod 11 can drive the fixing part 3 of the first clutch mechanism 302 and the second clutch mechanism 303 to rotate relative to the moving part 4.

[0056] The primary drive mechanism 400 and the secondary drive mechanism 301 of the present invention have the same structure and can adopt the drive mechanism shown in FIG5 . As a first embodiment of the drive mechanism of the present invention, the drive mechanism includes a screw rod 11 (as a rotating member), and the ends 1101 of the screw rod 11 serve as output ends of the drive mechanism. The output end of the primary drive mechanism 400 is used to connect to the first connecting arm 503 and the second connecting arm 504, and the output end of the secondary drive mechanism 301 is used to connect to the first clutch mechanism 302 and the second clutch mechanism 303. A sliding sleeve 12 (as an intermediate member) is movably mounted on the screw rod 11.

[0057] The sliding sleeve 12 has a through hole through which it is mounted on the spiral rod 11. The outer circumferential surface of the spiral rod 11 is formed with a spiral protrusion 1102 that extends spirally around its axis. The inner wall of the through hole of the sliding sleeve 12 is formed with a spiral groove 1202 that matches the spiral protrusion 1102. The spiral protrusion 1102 and the spiral groove 1202 form a spiral guide structure. The spiral groove 1202 cooperates with the spiral protrusion 1102 to achieve a spiral guide connection between the sliding sleeve 12 and the spiral rod 11.

[0058] The spiral guide structure between the sleeve 12 and the screw rod 11 can also adopt other structures that can produce a spiral guiding effect; for example, a spiral groove can be set on the outer peripheral surface of the screw rod 11, and the spiral protrusion can be set on the inner wall of the through hole of the sleeve 12; or a first spiral groove can be set on the inner wall of the through hole of the sleeve 12, and a second spiral groove can be set on the outer peripheral surface of the screw rod 11, and a plurality of balls can be set between the first spiral groove and the second spiral groove, which can also realize a spiral guiding connection between the sleeve 12 and the screw rod 11.

[0059] The sleeve 12 is connected to a transmission member; the transmission member includes an active member connected to a power source, and a driven member fixedly connected to the sleeve 12; driven by the power source, the active member drives the driven member, thereby driving the sleeve 12 to perform linear motion along the axial direction of the screw rod 11;

[0060] Specifically, a screw nut positioning hole 1203 is formed on the sliding sleeve 12, and a screw nut 15 (a driven member) is passed through the screw nut positioning hole 1203. The screw nut 15 is fixedly connected to the sliding sleeve 12 by a plurality of bolts.

[0061] The screw nut 15 is provided with an internal threaded hole, and the screw nut 15 is movably connected to the screw 14 (active component) through the internal threaded hole;

[0062] Both ends of the screw rod 14 are connected to the mounting base 13 via first bearings 17. The screw rod 14 can rotate relative to the fixed mounting base 13. One end of the screw rod 14 serves as the input end of the drive mechanism and is connected to a power source. The power source can be an electrically driven motor, a cylinder driven by compressed air, or a hydraulic cylinder driven by liquid.

[0063] The two ends of the screw rod 11 are movably connected to the mounting seat 13 through the second bearing 18; the screw rod 11 can rotate relative to the fixed mounting seat 13;

[0064] The outer cover of the spiral rod 11 is provided with a housing 16 (as a fixing member);

[0065] The outer peripheral surface of the sliding sleeve 12 is formed with a first axial guide structure extending in the axial direction, and the housing 16 is provided with a second axial guide structure adapted to the first axial guide structure; the first axial guide structure cooperates with the second axial guide structure;

[0066] Specifically, the outer peripheral surface of the sliding sleeve 12 is formed with an axially extending guide groove 1201 as a first axial guide structure, and the inner wall of the housing 16 is formed with a guide protrusion 1601 that cooperates with the guide groove 1201 of the sliding sleeve 12 as a second axial guide structure. The cooperation between the guide groove 1201 and the guide protrusion 1601 realizes the movable connection between the sliding sleeve 12 and the housing 16.

[0067] Of course, the first axial guide structure can also be a guide protrusion, and the second axial guide structure can be a guide groove; or, the first axial guide structure and the second axial guide structure can both be guide grooves, and multiple intermediate parts can be arranged between the first axial guide structure and the second axial guide structure to form a guide fit, such as a ball bearing, which can also realize a movable connection between the sleeve 12 and the housing 16.

[0068] The working principle of the driving mechanism of the present invention is as follows:

[0069] A power source (such as a motor) drives the screw rod 14 to rotate, and the rotation of the screw rod 14 drives the screw nut 15 to perform translational motion along the axial direction of the screw rod 14; the screw nut 15 drives the sleeve 12 to translate along the axial direction of the screw rod 11, and during the translation process, the sleeve 12 drives the screw rod 11 to rotate around its own rotation axis through the coordinated guiding effect of the spiral groove 1202 and the spiral protrusion 1102, thereby realizing a small angle rotation of the screw rod 11.

[0070] Since the sleeve 12 is movably connected to the housing 16 through the cooperation between the guide groove 1201 and the guide protrusion 1601, the translational movement of the sleeve 12 driven by the screw nut 15 can be guided by the guide groove 1201 and the guide protrusion 1601 to avoid the rotation of the screw rod 11 affecting the linear movement of the sleeve 12.

[0071] The present invention utilizes a power source to enable the screw rod 11 to rotate within a narrow range (e.g., no more than 360°). The maximum rotation angle of the screw rod 11 depends on the helical angle of the helical protrusion 1102 of the screw rod 11 and the length of the screw rod 11. By adjusting the helical angle of the helical protrusion 1102 and the length of the screw rod 11, the screw rod 11 can be rotated within a narrow range of no more than 180°.

[0072] Preferably, the helix angle of the spiral guide structure does not exceed 40°; wherein the helix angle of the spiral guide structure refers to the angle a between the spiral guide structure (i.e., the spiral protrusion 1102) and the rotation axis of the spiral rod 11, as shown in Figure 6.

[0073] Because the helix angle does not exceed 40 degrees, when the screw rod 11 of the present invention needs to rotate, the screw rod 14 is rotated by the power source. The rotation of the screw rod 14 can easily drive the screw nut 15 and the sliding sleeve 12 to perform translational motion along the axis of the screw rod 11, thereby driving the rotation of the screw rod 11. The present invention can achieve low-speed rotation of the screw rod 11 without a reduction mechanism.

[0074] During use, when the photovoltaic panel applies a torsional force to the screw rod 11 under the action of an external force (for example, when the screw rod 11 is subjected to a huge torque due to strong wind blowing towards the photovoltaic panel), the screw rod 11 will transmit the external force to the sliding sleeve 12. Since the screw rod 11 and the sliding sleeve 12 are connected by a spiral guide through the cooperation between the spiral protrusion 1102 and the spiral groove 1202, according to force analysis, the screw rod 11 will apply a thrust along the axial direction of the screw rod 11 and a thrust along the circumferential direction of the screw rod 11 to the sliding sleeve 12, so that the sliding sleeve 12 has a tendency to translate along the axial direction and rotate along the circumferential direction under the action of the thrust in the axial direction.

[0075] However, due to the guiding cooperation formed by the guide groove 1201 and the guide protrusion 1601, the sleeve 12 can only make linear motion along the axis of the screw rod 11 relative to the outer shell 16 and cannot rotate. Therefore, the thrust along the circumferential direction of the screw rod 11 received by the sleeve 12 will be directly transmitted to the outer shell 16, that is, transmitted to the component used to fix the outer shell 16.

[0076] At the same time, when the power source drives the screw rod 14 to rotate, the screw rod 14 can provide a holding force to the sleeve 12 through the screw nut 15, thereby offsetting the thrust along the axis of the screw rod 11 received by the sleeve 12.

[0077] Under the joint action of the housing 16 and the power source, the drive mechanism of the present invention can prevent the sliding sleeve 12 from generating abnormal movement relative to the screw rod 11 when encountering strong winds during operation, thereby preventing abnormal rotation of the screw rod 11 caused by strong winds.

[0078] Therefore, the spiral rod 11 of the present invention has a better ability to resist external forces and its rotation state will not be affected by external forces.

[0079] More preferably, the helix angle of the helical guide structure is greater than 5° and less than 25°.

[0080] Obviously, the smaller the helix angle is, the smaller the thrust along the axis of the screw rod 11 is. At this time, only a smaller power source is needed to keep the screw rod 11 stationary to prevent the screw rod 11 from being rotated by the torsion from the external load.

[0081] Furthermore, when the helix angle is small enough, the screw rod 11 can be kept stationary without any power source; at this time, after the external force is decomposed, the thrust along the axis of the screw rod 11 and the friction force between the guide groove 1201 and the guide protrusion 1601 are equal.

[0082] When the diameter of the spiral rod 11 is 50 mm, and the helical angle of the spiral guide structure is different, the following data are measured at different angles in combination with a limited number of experiments:

[0083] When the helix angle is 40 degrees, when a force of 1000 N is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 850 N is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 N, a driving force of approximately 1200 N is required along the axial direction of the screw rod 11.

[0084] When the helix angle is 28 degrees, when a force of 1000 N is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 500 N is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 N, a driving force of approximately 680 N is required along the axial direction of the screw rod 11.

[0085] When the helix angle is 18 degrees, when a force of 1000 N is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 310 N is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 N, a driving force of approximately 450 N is required along the axial direction of the screw rod 11.

[0086] When the helix angle is 14 degrees, when a force of 1000 N is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 230 N is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 N, a driving force of approximately 320 N is required along the axial direction of the screw rod 11.

[0087] When the helix angle is 10 degrees, when a force of 1000 Newtons is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 150 Newtons is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 Newtons, a driving force of approximately 210 Newtons is required along the axial direction of the screw rod 11.

[0088] When the helix angle is 5 degrees, when a force of 1000 N is applied to the screw rod 11, in order to keep the screw rod 11 stationary, a force of approximately 75 N is required along the axial direction of the screw rod 11; and in order to drive a load of 1000 N, a driving force of approximately 110 N is required along the axial direction of the screw rod 11.

[0089] It is obvious from the above experimental data that when the degree of the helix angle is smaller, a smaller power source is needed to drive a load of the same weight. At the same time, a smaller power source is needed to keep the spiral rod 11 from rotating relative to the sleeve 12.

[0090] Therefore, the present invention can significantly reduce the power requirement for the power source of the driving mechanism, and only requires a relatively small power motor to maintain the posture of the photovoltaic panel, thereby keeping the upper surface of the photovoltaic panel facing the sun.

[0091] Specifically, the weight of the photovoltaic panel is transferred through housing 16, sleeve 12, and screw 11, and then to lead screw 14. An axially extending guide structure is provided between housing 16 and sleeve 12, and a spiral guide structure is provided between sleeve 12 and screw 11. These two guide structures disperse the weight of the photovoltaic panel, thereby preventing its direct impact on lead screw 14. When the photovoltaic panel stops rotating, the two guide structures maintain the panel's operating posture (as shown in FIG. 1 ). Therefore, the power source only needs to be sufficient to drive screw 11, thereby reducing the power requirement.

[0092] Similarly, when the photovoltaic panel is subjected to external forces (such as strong winds), the external forces acting on the photovoltaic panel need to be transmitted through the housing 16 and the sleeve 12 to the screw rod 11, and then to the screw rod 14; therefore, the external forces will not have a direct impact on the screw rod 14.

[0093] Furthermore, since the helix angle of the spiral guide structure does not exceed 40°, especially when the helix angle is greater than 5° and less than 25°, the spiral guide structure can significantly reduce the force transmitted to the screw 14, that is, the force transmitted to the power source will be significantly reduced; the screw 14 only needs a small amount of additional power to offset the external force to maintain its original working posture, thereby further reducing the power requirement for the power source, that is, only a smaller power motor is needed to resist the external force.

[0094] In severe weather or special circumstances, the present invention can control the primary drive mechanism 400 and the secondary drive mechanism 301 to fold the photovoltaic panels. This reduces the overall impact of wind and other factors on the photovoltaic panels, reduces wind resistance, and reduces the risk of wind damage to the equipment, making the equipment more durable. The folded state also prevents snow accumulation on the photovoltaic panels, reduces power generation attenuation, and enhances the durability of the equipment.

[0095] The first embodiment of the driving mechanism is characterized in that a spiral guide structure is provided between the sliding sleeve and the spiral rod, and an axial guide structure is provided between the sliding sleeve and the housing.

[0096] As shown in Figures 7 and 8, as a second embodiment of the drive mechanism of the present invention, the drive mechanism includes a straight guide rod 301-11, a screw rod 301-14 is inserted into the straight guide rod 301-11, and both ends of the screw rod 301-14 are connected to the straight guide rod 301-11 via bearings 301-18; one end of the screw rod 301-14 serves as the input end of the drive mechanism and is connected to a power source; the screw rod 301-14 is rotatable relative to the straight guide rod 301-11; the straight guide rod 301-11 is provided with a guide groove 301-1101 extending in the axial direction; a screw nut 301-15 is movably provided in the guide groove 301-1101; the screw nut 301-15 is movably sleeved on the screw rod 301-14;

[0097] The screw nut 301-15 is fixedly connected to the sleeve 301-12 by a set screw. The screw nut 301-15 is provided with a threaded hole 301-1501, and the sleeve 301-12 is provided with a threaded hole 301-1201 for inserting the set screw.

[0098] The sliding sleeve 301-12 is movably arranged on the outer sleeve 301-16; the outer peripheral surface of the sliding sleeve 301-12 is formed with a spiral protrusion extending spirally around its axis, and the inner wall of the through hole of the outer sleeve 301-16 is formed with a spiral groove 301-1601 adapted to the spiral protrusion; the spiral protrusion and the spiral groove 301-1601 constitute a spiral guide structure; through the cooperation of the spiral protrusion and the spiral groove 301-1601, a spiral guide connection between the sliding sleeve 301-12 and the outer sleeve 301-16 is realized.

[0099] The working principle of the second embodiment of the driving mechanism is as follows:

[0100] The power source drives the screw 301-14 to rotate, and drives the screw nut 301-15 to perform axial translational motion in the guide groove 301-1101 of the straight guide rod 301-11; the screw nut 301-15 drives the sleeve 301-12 to translate axially along the outer sleeve 301-16, and during the translation process, the sleeve 301-12 drives the outer sleeve 301-16 to rotate around its own rotation axis through the cooperative guiding effect of the spiral guide structure, thereby realizing a small angle rotation of the outer sleeve 301-16.

[0101] The second embodiment of the driving mechanism sets the spiral guide structure between the sleeve 301-12 and the outer sleeve 301-16, and sets the axial guide structure between the sleeve 301-12 and the straight guide rod 301-11, which can also realize the small angle rotation of the outer sleeve 301-16 relative to the straight guide rod 301-11.

[0102] As shown in Figures 15 and 16, as a second embodiment of the T-shaped structure of the present invention, the first-stage drive mechanism 300 includes a straight guide cylinder 300-11, a screw rod 300-14 is inserted into the interior of the straight guide cylinder 300-11; a screw nut 300-15 is movably sleeved on the screw rod 300-14; a sliding sleeve 300-12 is movably sleeved on the outer surface of the straight guide cylinder 300-11; a housing 300-16 is movably sleeved on the outer surface of the sliding sleeve 300-12; the screw nut 300-15 is fixedly connected to the sliding sleeve 300-12; a straight guide groove extending in the axial direction is provided on the outer periphery of the straight guide cylinder 300-11, and a straight guide protrusion extending in the axial direction is provided on the inner hole of the sliding sleeve 300-12. An axial guide structure is formed between the outer periphery of the straight guide cylinder 300-11 and the inner hole of the sliding sleeve 300-12;

[0103] The outer periphery of the sliding sleeve 300-12 is provided with a spiral groove, and the inner hole of the housing 300-16 is provided with a spiral protrusion, so that a spiral guide structure is formed between the outer periphery of the sliding sleeve 300-12 and the inner hole of the housing 300-16;

[0104] Specifically, an insert 300-1501 is fixedly provided on the outside of the screw nut 300-15, and a guide slot 300-1101 extending in the axial direction is opened on the side of the straight guide cylinder 300-11. The insert 300-1501 is movably provided in the guide slot 300-1101 of the straight guide cylinder 300-11.

[0105] A short guide groove 300-1201 extending axially is provided on the side of the sleeve 300-12, and the insert 300-1501 is fixedly and movably arranged in the short guide groove 300-1201 of the sleeve 300-12 so that the insert 300-1501 is fixedly connected to the sleeve 300-12, thereby realizing a fixed connection between the screw nut 300-15 and the sleeve 300-12.

[0106] The housing 300 - 16 of the primary drive mechanism 300 is fixedly connected to one end of the straight guide rod 400 - 11 of the secondary drive mechanism 400 via the connecting member 20 , so that the secondary drive mechanism 400 and the primary drive mechanism 300 form a T-shaped structure;

[0107] The outer circumference of the straight guide rod 400-11 is movably sleeved with a guide cylinder 400-12; the outer circumference of the straight guide rod 400-11 is provided with an axially extending straight guide groove 400-1101, and the inner hole of the guide cylinder 400-12 is provided with an axially extending straight guide protrusion, forming an axial guide structure between the outer circumference of the straight guide rod 400-11 and the inner hole of the guide cylinder 400-12;

[0108] One end of the inner hole of the guide cylinder 400-12 is movably connected to the screw rod 400-14 through an internal threaded hole; the outer sleeve of the guide cylinder 400-12 is movably provided with an outer cylinder 400-16; a spiral groove is provided on the outer periphery of one end of the guide cylinder 400-12, and a spiral protrusion is provided on the inner hole of the outer cylinder 400-16, forming a spiral guide structure between the outer periphery of one end of the guide cylinder 400-12 and the inner hole of the outer cylinder 400-16.

[0109] The working principle of the second embodiment of the driving mechanism of the present invention is as follows:

[0110] The screw rod 300-14 of the primary drive mechanism 300 is driven to rotate by a power source (such as a motor), and the rotation of the screw rod 300-14 drives the screw nut 300-15 to perform translational motion along the axial direction of the screw rod 300-14; the screw nut 300-15 drives the sleeve 300-12 to translate along the axial direction of the straight guide cylinder 300-11 through its insert 300-1501, and during the translation process, the sleeve 300-12 drives the housing 300-16 to rotate around its own rotation axis through the cooperative guidance effect of the spiral guide structure between the sleeve 300-12 and the housing 300-16, thereby realizing a small angle rotation of the housing 300-16, and then drives the secondary drive mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200 connected thereto to rotate as a whole around the rotation axis of the primary drive mechanism 300, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the horizontal axis;

[0111] The screw rod 400-14 of the secondary drive mechanism 400 is driven to rotate by another power source, and the rotation of the screw rod 400-14 drives the guide cylinder 400-12 to perform linear motion along the axial direction; since there is a spiral guide structure between the guide cylinder 400-12 and the outer cylinder 400-16, the guide cylinder 400-12 drives the outer cylinder 400-16 of the secondary drive mechanism 400 to rotate around its own rotation axis relative to the guide cylinder 400-12 during the linear motion, thereby realizing a small angle rotation of the outer cylinder 400-16; the outer cylinder 400-16 of the secondary drive mechanism 400 drives the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary drive mechanism 400, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis.

[0112] As shown in Figures 9 to 11, an embodiment of the clutch mechanism of the present invention includes a fixed member 3 and a moving member 4 arranged along the axial direction of the screw rod 11. The fixed member 3 is provided with a protrusion facing the moving member 4, and the moving member 4 is provided with a recess adapted to the protrusion. When the clutch mechanism is in a connected state, the fixed member 3 and the moving member 4 can form a transmission connection through the cooperation of the protrusion and the recess.

[0113] Specifically, the fixed member 3 and the moving member 4 are respectively formed with connecting teeth that cooperate with each other at the facing ends; when the clutch mechanism is in the connected state, the fixed member 3 and the moving member 4 can be meshed and connected through the connecting teeth;

[0114] The fixed part 3 and the moving part 4 are covered with a housing 1;

[0115] The inner end surface of the fixing member 3 is connected to the housing 1 via a movable connecting member so that relative rotational motion can occur between the fixing member 3 and the housing 1; the movable connecting member can be a bearing 2;

[0116] The other end (i.e., the opposite end) of the fixing member 3 extends out of the housing 1; the extended portion of the fixing member 3 is fixedly connected to the output end of the screw rod 11 of the secondary drive mechanism 301; the rotation of the screw rod 11 of the secondary drive mechanism 301 can drive the fixing member 3 of the clutch mechanism to rotate;

[0117] The moving part 4 and the shell 1 are connected through a guide structure; specifically, a protrusion 4-1 is formed on the side of the moving part 4, and a groove 1-1 is provided on the shell 1; the groove 1-1 cooperates with the protrusion 4-1; the protrusion 4-1 of the moving part 4 extends into the groove 1-1 of the shell 1, thereby realizing the connection between the moving part 4 and the shell 1.

[0118] The other end (i.e., the opposite end) of the moving part 4 is connected to a plurality of evenly distributed return springs 5; the return springs 5 ​​can provide a return force to the moving part 4;

[0119] Specifically, one end of the return spring 5 abuts against the other end of the moving part 4, and the other end of the return spring 5 seals the flange of the cover 6;

[0120] In this embodiment, the cover 6 and the housing 1 are separate, detachable components; obviously, the cover 6 and the housing 1 can also be integrally formed, in which case the return spring 5 is directly connected to the housing 1. The return spring 5 can be fixed in various ways, but since the fixing method of the return spring 5 is not the inventive point of the present invention, it will not be described in detail here.

[0121] The moving part 4 is sleeved on the cover 6, which allows the moving part 4 to remain coaxial with the fixed part 3, thereby guiding the translational movement direction of the moving part 4 so that the moving part 4 can only move towards or away from the fixed part 3 without deviating from the axial direction; the flange of the cover 6 is fixedly connected to the shell 1 by multiple bolts 8.

[0122] Preferably, a plurality of positioning grooves 6 - 1 are provided on the outer peripheral surface of the cover 6 , and the return spring 5 is arranged in the positioning grooves 6 - 1 . The positioning grooves 6 - 1 can guide the return spring 5 and avoid unnecessary deformation of the return spring 5 .

[0123] Of course, a single return spring may also be used, and the return spring may be sleeved outside the cover 6 , which can also provide a return force to the moving part 4 .

[0124] Those skilled in the art will appreciate that the return spring may be any elastic member capable of providing a return force to the moving part 4 , and the return force may be transmitted to the moving part 4 as long as the elastic member is in direct or indirect contact with the moving part 4 .

[0125] The cover 6 is fixedly connected to the fixed end of the lever 7 by a bolt 9, thereby connecting the lever 7 to the moving part 4. The lever 7 extends radially. When the free end of the lever 7 is subjected to force, it can transmit the force to the cover 6 and provide the clutch switching force to the moving part 4 through the return spring 5.

[0126] When the free end of the lever 7 is subjected to a leftward external force F, the fixed end of the lever 7 can provide a rightward pulling force to the flange of the cover 6; the cover 6 transmits the pulling force to the moving part 4 through the return spring 5, causing the moving part 4 to translate axially to the right, thereby separating the moving part 4 from the fixed part 3. As shown in Figure 10, when the free end of the lever 7 loses the effect of the external force, the return spring 5 provides a leftward elastic force to the moving part 4, causing the moving part 4 to move leftward, thereby resetting the moving part 4 and restoring the meshing connection state with the fixed part 3.

[0127] The clutch mechanism of the present invention is connected through the matching groove 1-1 and the protrusion 4-1, so that the shell 1 can circumferentially position the moving part 4, so that the moving part 4 can only perform relative translational movement with the shell 1, and cannot perform circumferential rotational movement between the moving part 4 and the shell 1, thereby avoiding the clutch mechanism affecting the flip angle of the photovoltaic panel.

[0128] As shown in Figure 12, a second embodiment of the foldable photovoltaic tracking device of the present invention is different from the first embodiment in that the other side of the fixed bracket 500 is fixedly connected to the second primary drive mechanism 901 extending in the transverse direction, and the second primary drive mechanism 901 is connected to the second secondary drive mechanism 900 extending in the longitudinal direction; one side of the second secondary drive mechanism 900 is fixedly connected to the inner side edge of the third photovoltaic panel 700, and the other side of the second secondary drive mechanism 900 is fixedly connected to the inner side edge of the fourth photovoltaic panel 800.

[0129] The connection relationship between the second primary drive mechanism 901 and the second secondary drive mechanism 900 is the same as the connection relationship between the primary drive mechanism 400 and the secondary drive mechanism 301, and the connection relationship between the second secondary drive mechanism 900 and the third photovoltaic panel 700 and the fourth photovoltaic panel 800 is the same as the secondary drive mechanism 301 and the first photovoltaic panel 100 and the second photovoltaic panel 200, which will not be repeated here.

[0130] In the second embodiment of the present invention, the first photovoltaic panel 100 and the second photovoltaic panel 200 (i.e., the first photovoltaic panel assembly) are arranged on one side of the vertical pole 600, and the third photovoltaic panel 700 and the fourth photovoltaic panel 800 (i.e., the second photovoltaic panel assembly) are arranged on the other side of the vertical pole 600, so that the first photovoltaic panel assembly and the second photovoltaic panel assembly are respectively arranged on both sides of the vertical pole 600 along the rotation axis of the horizontal axis. During the rotation of the photovoltaic panel assembly around the horizontal axis, no matter what posture the photovoltaic panel is in, the first photovoltaic panel 100 and the second photovoltaic panel 200 will not block the third photovoltaic panel 700 and the fourth photovoltaic panel 800, and vice versa, so that each photovoltaic panel can always maintain its lighting area at the maximum.

[0131] Preferably, the rotation axis of the primary driving mechanism 400 is parallel to the rotation axis of the second primary driving mechanism 901 .

[0132] Of course, even if the rotation axis of the first-stage drive mechanism 400 is not parallel to the rotation axis of the second-stage drive mechanism 901, as long as the width of the fixed bracket 500 is changed so that there is sufficient spacing between the first-stage drive mechanism 400 and the second-stage drive mechanism 901, mutual interference between the first photovoltaic panel assembly and the second photovoltaic panel assembly can be avoided, thereby preventing the photovoltaic panels from blocking each other and affecting the power generation efficiency.

[0133] The second embodiment of the present invention can simultaneously install four photovoltaic panels, thereby increasing the number of photovoltaic panels to improve power generation capacity and balancing the forces acting on the poles.

[0134] The working principle of the foldable photovoltaic tracking device of the present invention is as follows:

[0135] The power source drives the screw rod 11 of the primary drive mechanism 400 to rotate forward or reverse, driving the secondary drive mechanism 301 and the first photovoltaic panel 100 and the second photovoltaic panel 200 connected thereto to rotate as a whole around the rotation axis of the primary drive mechanism 400, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the horizontal axis;

[0136] The screw rod 11 of the secondary driving mechanism 301 is driven by another power source to rotate forward or reverse, driving the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary driving mechanism 301, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis;

[0137] The number of rotations of the screw rod 14 of the primary drive mechanism 400 and the secondary drive mechanism 301 is controlled respectively to adjust the rotation angle of each screw rod 11, and the rotation angles of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the horizontal axis and the vertical axis can be controlled respectively, thereby achieving precise tracking of the sun.

[0138] When encountering strong winds, the power source is first used to drive the screw rod 11 of the primary drive mechanism 400 to rotate forward, and the rotation angle of the screw rod 11 of the primary drive mechanism 400 is adjusted to rotate the first photovoltaic panel 100 and the second photovoltaic panel 200 to the lowest point, so that the surfaces of the first photovoltaic panel 100 and the second photovoltaic panel 200 are close to the column 600;

[0139] At this time, the trigger member 306 of the secondary drive mechanism 301 connected to the first photovoltaic panel 100 and the second photovoltaic panel 200 contacts the vertical rod 600, as shown in FIG13 ; the vertical rod 600 provides an inward pulling force to the first pull rod 304 and the second pull rod 305 through the trigger member 306, and the first pull rod 304 and the second pull rod 305 drive the lever 7 of the first clutch mechanism 302 and the second clutch mechanism 303 to move inward, thereby driving the moving member 4 of the first clutch mechanism 302 and the second clutch mechanism 303 to move in a direction away from the fixed member 3, so that the first clutch mechanism 302 and the second clutch mechanism 303 are in a separated state;

[0140] Then, the screw rod 11 of the secondary drive mechanism 301 is driven to rotate in the forward direction by another power source. The screw rod 11 of the secondary drive mechanism 301 drives the fixing part 3 of the first clutch mechanism 302 and the second clutch mechanism 303 and the first photovoltaic panel 100 to rotate relative to the moving part 4, so that the first photovoltaic panel 100 rotates relative to the second photovoltaic panel 200, thereby realizing the flipping action between the two photovoltaic panels, and adjusting the rotation angle of the screw rod 11 of the secondary drive mechanism 301 to reduce the wind-exposed area of ​​the photovoltaic panel, thereby realizing the folding and stowing of the photovoltaic panel, as shown in FIG14 .

[0141] When it is necessary to track sunlight, the power source drives the screw rod 11 of the primary drive mechanism 400 to rotate in the opposite direction, driving the secondary drive mechanism 301 and the first photovoltaic panel 100 and the second photovoltaic panel 200 connected thereto to rotate in the opposite direction around the rotation axis of the primary drive mechanism 400 as a whole, so that the secondary drive mechanism 301 and the first photovoltaic panel 100 and the second photovoltaic panel 200 are moved away from the vertical pole 600; when the secondary drive mechanism 301 is away from the vertical pole 600, the trigger part 3062 of the trigger member 306 loses the reaction force of the vertical pole 600, the external force on the first pull rod 304 and the second pull rod 305 disappears, and the moving parts 4 of the first clutch mechanism 302 and the second clutch mechanism 303 are reset, so that the first clutch mechanism 302 and the second clutch mechanism 303 are in a connected state;

[0142] At this time, the first photovoltaic panel 100 and the second photovoltaic panel 200 are in a fixed connection state; the screw rod 11 of the secondary driving mechanism 301 is driven to rotate forward or reverse by another power source, and the secondary driving mechanism 301 can drive the fixed part 3 and the moving part 4 to rotate synchronously, thereby driving the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate synchronously.

[0143] Driven by the secondary drive mechanism 301, the fixing member 3 of the present invention can rotate, thereby causing circumferential rotation between the fixing member 3 and the moving member 4, thereby driving the first photovoltaic panel 100 to flip relative to the second photovoltaic panel 200. Because the flip angle of the first photovoltaic panel 100 is completely determined by the rotation angle of the secondary drive mechanism 301, the present invention can accurately control the flip angle of the photovoltaic panel.

[0144] During the movement of the photovoltaic panel of the present invention, once the trigger member 306 contacts any object (such as the vertical pole 600), the clutch mechanism is triggered. Therefore, the folding action of the present invention is automatically triggered. The clutch mechanism of the present invention does not rely on sensors to trigger, which can reduce the cost of the clutch mechanism.

[0145] In the first and second embodiments of the foldable photovoltaic tracking device of the present invention, the housing 16 of the primary drive mechanism 400 is fixedly connected to the fixed bracket 500, the screw rod 11 of the primary drive mechanism 400 is fixedly connected to the housing 16 of the secondary drive mechanism 301, and the screw rod 11 of the secondary drive mechanism 301 is fixedly connected to the photovoltaic panel. In other words, the housings 16 of the primary drive mechanism 400 and the secondary drive mechanism 301 serve as fixed components, and the screw rod 11 serves as a rotating component. Obviously, the screw rods 11 of the primary drive mechanism 400 and the secondary drive mechanism 301 can also serve as fixed components, and the housing 16 as a rotating component, thus similarly achieving rotation of the photovoltaic panel about the horizontal and vertical axes.

[0146] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications of the present invention fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A dual-axis tracking photovoltaic bracket with folding function, characterized in that: include: Fixed bracket, A primary drive mechanism, wherein a fixed part and a rotating part of the primary drive mechanism can rotate relative to each other; the fixed part of the primary drive mechanism is fixedly connected to the fixed bracket; as well as A secondary drive mechanism, wherein the fixed part and the rotating part of the secondary drive mechanism can rotate relative to each other; the fixed part of the secondary drive mechanism is fixedly connected to the rotating part of the primary drive mechanism, and the rotating part of the secondary drive mechanism is used to be fixedly connected to the photovoltaic panel; The rotation axis of the primary drive mechanism extends in the transverse direction; the rotation axis of the secondary drive mechanism extends in the longitudinal direction; The primary drive mechanism and / or the secondary drive mechanism also includes an intermediate piece, which is movably connected to the rotating piece, and the intermediate piece and the rotating piece are guided and connected via a first guide structure; the intermediate piece is movably connected to the fixed piece, and the intermediate piece and the fixed piece are guided and connected via a second guide structure.

2. The dual-axis tracking photovoltaic bracket with folding function according to claim 1, characterized in that: The fixed part is a shell, and the rotating part is a screw rod; or, the fixed part is a screw rod, and the rotating part is a shell; and the intermediate part is a sliding sleeve.

3. The dual-axis tracking photovoltaic bracket with folding function according to claim 1, characterized in that: The first guiding structure is a spiral guiding structure; the second guiding structure is an axial guiding structure; or, the first guiding structure is an axial guiding structure; the second guiding structure is a spiral guiding structure.

4. The dual-axis tracking photovoltaic bracket with folding function according to claim 2, characterized in that: The primary drive mechanism and / or the secondary drive mechanism also include: A follower, fixedly connected to the sliding sleeve; as well as The active member is connected to the power source; under the drive of the power source, the active member drives the driven member, which can drive the sliding sleeve to perform linear motion along the axial direction of the screw rod.

5. The dual-axis tracking photovoltaic bracket with folding function according to claim 3, characterized in that: The helix angle of the helical guide structure does not exceed 40 degrees.

6. The dual-axis tracking photovoltaic bracket with folding function according to claim 3, characterized in that: The helix angle of the helical guide structure is greater than 5 degrees and less than 25 degrees.

7. The dual-axis tracking photovoltaic support with folding function according to claim 4, characterized in that: The active part is a screw rod, and the driven part is a screw nut; the screw rod rotates, driving the screw nut and the sliding sleeve to translate along the axial direction of the screw rod, causing relative rotation between the screw rod and the sliding sleeve, thereby realizing relative rotation between the screw rod and the housing.

8. The dual-axis tracking photovoltaic support with folding function according to claim 2, characterized in that: The sliding sleeve is provided with a through hole, and the sliding sleeve is sleeved on the spiral rod through the through hole; the spiral guide structure is a spiral groove arranged on the inner wall of the through hole, and a spiral protrusion arranged on the outer peripheral surface of the spiral rod; Alternatively, the spiral guide structure is a spiral protrusion provided on the inner wall of the through hole, and a spiral groove provided on the outer peripheral surface of the spiral rod; Alternatively, the spiral guide structure is a first spiral groove respectively arranged on the inner wall of the through hole, a second spiral groove arranged on the outer circumference of the spiral rod, and a plurality of balls arranged between the first spiral groove and the second spiral groove.

9. The dual-axis tracking photovoltaic support with folding function according to claim 2, characterized in that: The outer peripheral surface of the sleeve is formed with a first axial guide structure extending axially, and the outer shell is provided with a second axial guide structure adapted to the first axial guide structure; the first axial guide structure and the second axial guide structure constitute the axial guide structure between the sleeve and the outer shell.

10. The dual-axis tracking photovoltaic support with folding function according to claim 9, characterized in that: The first axial guide structure is a guide protrusion, and the second axial guide structure is a guide groove; Alternatively, the first axial guiding structure is a guiding groove, and the second axial guiding structure is a guiding protrusion; Alternatively, it also includes an intermediate piece of the axial guide structure, the first axial guide structure and the second axial guide structure are both guide grooves, the intermediate piece of the axial guide structure is arranged between the first axial guide structure and the second axial guide structure, and the guide fit is formed by the intermediate piece of the axial guide structure.

11. The dual-axis tracking photovoltaic support with folding function according to claim 1, characterized in that: The primary drive mechanism is divided into two groups; the two groups of primary drive mechanisms are respectively fixedly arranged on both sides of the fixed bracket.

12. The dual-axis tracking photovoltaic support with folding function according to claim 11, characterized in that: The rotation axes of the two groups of primary drive mechanisms are parallel to each other.

13. The dual-axis tracking photovoltaic support with folding function according to claim 1, characterized in that: It also includes: a vertical pole fixedly connected to the fixed bracket; the vertical pole extends vertically.

14. The dual-axis tracking photovoltaic support with folding function according to any one of claims 1 to 13, characterized in that: It also includes a clutch mechanism, the clutch mechanism is fixedly connected to the output end of the secondary drive mechanism, and the clutch mechanism is used to be fixedly connected to the photovoltaic panel; The clutch mechanism comprises a clutch mechanism fixing part and a clutch mechanism moving part which are arranged relatively to each other; under the action of external force, the clutch mechanism moving part of the clutch mechanism can move relative to its clutch mechanism fixing part, so that the clutch state of the clutch mechanism is switched.

15. The dual-axis tracking photovoltaic support with folding function according to claim 14, characterized in that: The clutch mechanism also includes: A shifting rod, one end of which is connected to the moving part, and the other end of which is a free end; when the free end of the shifting rod is subjected to force, the external force can be provided to the moving part.

16. The dual-axis tracking photovoltaic support with foldable wind resistance function according to claim 15, characterized in that: The clutch mechanism further comprises an elastic member, wherein the elastic member is connected to the moving member; when the external force disappears, the elastic member can provide a restoring force to the moving member.

17. A dual-axis tracking photovoltaic device with folding function, characterized in that: It comprises a dual-axis tracking photovoltaic support with folding function and a photovoltaic panel as claimed in any one of claims 1 to 16, wherein the secondary driving mechanism of the dual-axis tracking photovoltaic support is connected to the photovoltaic panel; When the rotating member of the primary drive mechanism rotates relative to its fixed member, the secondary drive mechanism and the photovoltaic panel fixedly connected thereto can be driven to rotate around the rotation axis of the primary drive mechanism, thereby realizing the rotation of the photovoltaic panel around the horizontal axis; When the rotating member of the secondary driving mechanism rotates relatively to the fixed member thereof, the photovoltaic panel can be driven to rotate around the rotation axis of the secondary driving mechanism, thereby realizing the rotation of the photovoltaic panel around the longitudinal axis.

Images