Double-shaft tracking type photovoltaic support with folding function and photovoltaic device

Abstract

The invention discloses a double-shaft tracking type photovoltaic support with a folding function, which comprises a fixed support, a first-stage driving mechanism and a second-stage driving mechanism, and is characterized in that the first-stage driving mechanism can drive the second-stage driving mechanism and a photovoltaic panel fixedly connected with the second-stage driving mechanism to rotate around a rotation axis of the first-stage driving mechanism, so that the rotation of the photovoltaic panel around a transverse shaft is realized; the second-stage driving mechanism can drive the photovoltaic panel to rotate around the rotation axis of the second-stage driving mechanism, so that the photovoltaic panel rotates around the longitudinal axis. The photovoltaic device has tracking and folding functions, so that the photovoltaic device not only can be installed in a wild wasteland, but also can be installed in a city and an agricultural land without changing the use property of the land, and the installation problem of the photovoltaic panel is solved. The invention further discloses a double-shaft tracking type photovoltaic device with a folding function.

Description

Technical Field

[0001] The present invention relates to a photovoltaic power generation device, in particular to a dual-axis tracking photovoltaic bracket with a folding function. The present invention also relates to a dual-axis tracking photovoltaic device with a folding function. Background Art

[0002] As a clean and renewable energy, solar energy 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] At present, in order to increase the power generation of photovoltaic equipment per unit time, a common method is to increase the size of photovoltaic panels as much as possible. For example, Chinese utility model patent document CN216122306U discloses a photovoltaic device, which includes a plurality of photovoltaic panels arranged in a linear manner, so that the size of the photovoltaic panels is increased significantly, thereby significantly increasing the 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 make the upper surface of the photovoltaic panel always 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 onto the photovoltaic panel at the optimal incident angle.

[0005] Although the photovoltaic bracket can adjust the inclination and azimuth of the photovoltaic panel, the tracking range of the inclination is 0° to 110°, and the tracking range of the azimuth is -125° to +125°. Obviously, the angle adjustment range of the photovoltaic bracket is limited. In addition, the angle adjustment method of the 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 dual-axis tracking photovoltaic bracket with a folding function, 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 and ensure that sunlight is irradiated onto the photovoltaic panel at the optimal incident angle.

[0007] In order to solve the above technical problems, the technical solution of the dual-axis tracking photovoltaic bracket with folding function of the present invention is:

[0008] It includes a fixed bracket, a primary drive mechanism and a secondary drive mechanism, wherein the fixed part and the 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; 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 for fixed connection with 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 include an intermediate part, which is movably connected to the rotating part, and the intermediate part and the rotating part are guided by a first guide structure; the intermediate part is movably connected to the fixed part, and the intermediate part and the fixed part are guided by a second guide structure.

[0009] In another embodiment, the fixed member is a housing, and the rotating member is a screw rod; or, the fixed member is a screw rod, and the rotating member is a housing; and the intermediate member is a sliding sleeve.

[0010] In another embodiment, the first guide structure is a spiral guide structure; the second guide structure is an axial guide structure; or, the first guide structure is an axial guide structure; the second guide structure is a spiral guide structure.

[0011] In another embodiment, the primary driving mechanism and / or the secondary driving mechanism further includes a driven member and an active member, the driven member is fixedly connected to the sleeve; the active member is connected to a power source; under the drive of the power source, the active member drives the driven member, and can drive the sleeve to perform linear motion along the axial direction of the screw rod.

[0012] In another embodiment, the helix angle of the helical guide structure does not exceed 40°.

[0013] In another embodiment, the helix angle of the helical guide structure is greater than 5° and less than 25°.

[0014] In another embodiment, the active member is a screw and the driven member is a screw nut; the screw rotates, driving the screw nut and the sleeve to translate along the axial direction of the screw rod, causing relative rotation between the screw rod and the sleeve, thereby achieving relative rotation between the screw rod and the housing.

[0015] In another embodiment, 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 provided on the inner wall of the through hole, and a spiral protrusion provided on the outer circumference of the spiral rod;

[0016] In another embodiment, 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 circumference of the spiral rod;

[0017] In another embodiment, 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.

[0018] In another embodiment, a first axial guide structure extending axially is formed on the outer peripheral surface of the sleeve, and a second axial guide structure adapted to the first axial guide structure is provided on the outer shell; the first axial guide structure and the second axial guide structure constitute the axial guide structure between the sleeve and the outer shell.

[0019] In another embodiment, the first axial guide structure is a guide protrusion, and the second axial guide structure is a guide groove;

[0020] In another embodiment, the first axial guide structure is a guide groove, and the second axial guide structure is a guide protrusion;

[0021] In another embodiment, 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.

[0022] In another embodiment, there are two groups of primary driving mechanisms; the two groups of primary driving mechanisms are respectively fixedly disposed on two sides of the fixed bracket.

[0023] In another embodiment, the rotation axes of the two sets of primary drive mechanisms are parallel to each other.

[0024] In another embodiment, it further comprises a vertical pole, which is fixedly connected to the fixed bracket; the vertical pole extends vertically.

[0025] The present invention also provides a dual-axis tracking photovoltaic device with a folding function, and its technical solution is:

[0026] It includes the dual-axis tracking photovoltaic bracket with folding function and the photovoltaic panel, wherein the secondary driving mechanism of the dual-axis tracking photovoltaic bracket is connected to the photovoltaic panel; when the rotating part of the primary driving mechanism rotates relative to its fixing part, it can drive the secondary driving mechanism and the photovoltaic panel fixedly connected thereto to rotate around the rotation axis of the primary driving mechanism, thereby realizing the rotation of the photovoltaic panel around the horizontal axis; when the rotating part of the secondary driving mechanism rotates relative to its fixing part, it can drive the photovoltaic panel to rotate around the rotation axis of the secondary driving mechanism, thereby realizing the rotation of the photovoltaic panel around the longitudinal axis.

[0027] In another embodiment, the fixed part of the primary drive mechanism is a shell, and the rotating part is a screw rod; the shell of the primary drive mechanism is fixedly connected to the fixed bracket.

[0028] In another embodiment, the fixed part of the secondary drive mechanism is a shell, and the rotating part is a screw rod; the shell of the secondary drive mechanism is fixedly connected to the screw rod of the primary drive mechanism, and the screw rod of the secondary drive mechanism is fixedly connected to the photovoltaic panel.

[0029] In another embodiment, the first output end of the spiral rod of the primary drive mechanism is fixedly connected to one end of the first connecting arm, and the other end of the first connecting arm is fixedly connected to the lower support member and / or the upper support member; the second output end of the spiral rod of the primary drive mechanism is fixedly connected to one end of the second connecting arm, and the other end of the second connecting arm is fixedly connected to the lower support member and / or the upper support member; the outer shell of the primary drive mechanism movably connects one end of the lower support member and the upper support member, and the lower support member and the upper support member can rotate relative to the outer shell of the primary drive mechanism; the other ends of the lower support member and the upper support member are fixedly connected to the outer shell of the secondary drive mechanism, and the output end of the spiral rod of the secondary drive mechanism is fixedly connected to the photovoltaic panel.

[0030] In another embodiment, the fixed part of the primary drive mechanism is a screw rod, and the rotating part is a housing; the screw rod of the primary drive mechanism is fixedly connected to the fixed bracket.

[0031] In another embodiment, the fixed part of the secondary drive mechanism is a spiral rod, and the rotating part is a shell; the spiral rod of the secondary drive mechanism is fixedly connected to the shell of the primary drive mechanism, and the shell of the secondary drive mechanism is fixedly connected to the photovoltaic panel.

[0032] In another embodiment, the two ends of the spiral rod of the primary drive mechanism are fixedly connected to the fixed bracket through connecting parts, the outer shell of the primary drive mechanism is fixedly connected to one end of the lower support member and the upper support member, and the other end of the lower support member and the upper support member is fixedly connected to the two ends of the spiral rod of the secondary drive mechanism; the outer shell of the secondary drive mechanism is fixedly connected to the photovoltaic panel.

[0033] The technical effects that can be achieved by the present invention are:

[0034] 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.

[0035] 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.

[0036] 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.

[0037] On the other hand, when the present invention is installed on agricultural land, it can not only convert solar energy into electrical energy for use, but also improve the economic efficiency of agriculture. Specifically, when the photovoltaic panels are folded and retracted, they can provide sufficient light to the plants; and when the photovoltaic panels are unfolded, they can generate electricity. For shade-loving crops, when the photovoltaic panels are unfolded, they can also provide shade for the plants, protect the plants, reduce water evaporation, optimize the growth environment of crops, and increase agricultural yields.

[0038] When photovoltaic tracking is not needed at night, the photovoltaic panels are fitted to the poles to minimize damage to the poles and other parts caused by the expansion of the photovoltaic panels. It reduces the horizontal lifting force, reduces the pressure on the bracket and base, and makes the equipment more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] It should be understood by those skilled in the art that the following description is only intended to schematically illustrate the principles of the present invention, which can be applied in a variety of ways to achieve many different alternative embodiments. These descriptions are only intended to illustrate the general principles of the teachings of the present invention and are not intended to limit the inventive concepts disclosed herein.

[0040] 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.

[0041] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0042] Figure 1 is a schematic diagram of a first embodiment of a dual-axis tracking photovoltaic device with a folding function according to the present invention;

[0043] Figure 2is an exploded schematic diagram of a first embodiment of a dual-axis tracking photovoltaic device with a folding function according to the present invention;

[0044] Figure 3 is an exploded schematic diagram of the driving mechanism of the present invention;

[0045] Figure 4 is a partial enlarged schematic diagram of the spiral rod of the present invention;

[0046] Figure 5 is a schematic diagram of a second embodiment of the present invention;

[0047] Figure 6 is a schematic diagram of a second embodiment of the present invention; the first photovoltaic panel assembly in the figure is in a folded and collapsed state;

[0048] Figure 7 is a schematic diagram of a second embodiment of the T-shaped structure of the present invention;

[0049] Figure 8 It is an exploded schematic diagram of the second embodiment of the T-shaped structure of the present invention.

[0050] Description of reference numerals in the figures:

[0051] 100 is the first photovoltaic panel, 200 is the second photovoltaic panel,

[0052] 300 is the primary drive mechanism, 400 is the secondary drive mechanism,

[0053] 500 is the fixed bracket, 600 is the vertical pole,

[0054] 700 is the third photovoltaic panel, 800 is the fourth photovoltaic panel,

[0055] 901 is the second primary driving mechanism, 900 is the second secondary driving mechanism,

[0056] 501 is a lower support member, 502 is an upper support member,

[0057] 503 is a first connecting arm, 504 is a second connecting arm,

[0058] 401 is a first photovoltaic panel connector, 402 is a second photovoltaic panel connector,

[0059] 101 is a first connecting ring of a first photovoltaic panel,

[0060] 102 is a second connecting ring of the first photovoltaic panel,

[0061] 201 is a first connecting ring of the second photovoltaic panel,

[0062] 202 is a second connecting ring of the second photovoltaic panel,

[0063] 11 is a spiral rod, 12 is a sliding sleeve,

[0064] 13 is a mounting seat, 14 is a screw rod,

[0065] 15 is a screw nut, 16 is a housing,

[0066] 17 is a first bearing, 18 is a second bearing,

[0067] 1101 are the two ends of the spiral rod, 1102 are the spiral protrusions,

[0068] 1201 is a guide groove, 1202 is a spiral groove,

[0069] 1203 is a fixing part positioning hole, and 1601 is a guide protrusion. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in this article do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0071] like Figure 1The figure shows the first embodiment of the dual-axis tracking photovoltaic device with folding function of the present invention, which comprises 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 the fixing bracket 500, and one side of the fixing bracket 500 is fixedly connected to the primary driving mechanism 300, and the rotation axis of the primary driving mechanism 300 extends in the horizontal direction; the primary driving mechanism 300 is connected to the secondary driving mechanism 400, and the rotation axis of the secondary driving mechanism 400 extends in the longitudinal direction; the primary driving mechanism 300 and the secondary driving mechanism 400 form a T-shaped structure; one side of the secondary driving mechanism 400 is fixedly connected to the inner side of the first photovoltaic panel 100, and the other side of the secondary driving mechanism 400 is fixedly connected to the inner side of the second photovoltaic panel 200;

[0072] The primary drive mechanism 300 has a housing 16 and a screw rod 11, and the screw rod 11 can realize relative rotation with the housing 16; the primary drive mechanism 300 can drive the secondary drive mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200 fixedly connected thereto to rotate around the rotation axis (i.e., the horizontal axis) of the primary drive mechanism 300;

[0073] Specifically, Figure 2 As shown, the housing 16 of the primary drive mechanism 300 is fixedly connected to the fixed bracket 500; the lower part of the housing 16 is movably connected to one end of the lower support member 501, and the upper part 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 part 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 400, thereby realizing the movable connection between the secondary drive mechanism 400 and the housing 16 of the primary drive mechanism 300;

[0074] The first output end of the spiral rod 11 of the primary driving mechanism 300 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 driving mechanism 300 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 driving mechanism 300 is fixedly connected to the secondary driving mechanism 400 through the first connecting arm 503 and the second connecting arm 504;

[0075] When the spiral rod 11 of the primary driving mechanism 300 rotates relative to its housing 16, it can drive the secondary driving mechanism 400 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;

[0076] The structure of the secondary driving mechanism 400 is the same as that of the primary driving mechanism 300; the secondary driving mechanism 400 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 driving mechanism 400;

[0077] Specifically, the housing 16 of the secondary drive mechanism 400 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 spiral rod 11 of the secondary drive mechanism 400 is fixedly connected to the first photovoltaic panel connecting member 401, and the second output end of the spiral rod 11 of the secondary drive mechanism 400 is fixedly connected to the second photovoltaic panel connecting member 402; the first photovoltaic panel connecting member 401 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 photovoltaic panel connecting member 402 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 fixed connection between the spiral rod 11 of the secondary drive mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200;

[0078] When the spiral rod 11 of the secondary driving mechanism 400 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 400 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.

[0079] The primary driving mechanism 300 of the present invention can drive the photovoltaic panel to rotate around the horizontal axis, and the secondary driving mechanism 400 can drive the photovoltaic panel to rotate around the vertical axis. By controlling the primary driving mechanism 300 and the secondary driving mechanism 400 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.

[0080] The primary drive mechanism 300 and the secondary drive mechanism 400 of the present invention have the same structure and can be used as follows: Figure 3 The driving mechanism shown; as the first embodiment of the driving mechanism of the present invention, the driving mechanism includes a screw rod 11 (as a rotating member), and the two ends 1101 of the screw rod 11 serve as output ends of the driving mechanism; the output end of the primary driving mechanism 300 is used to connect the first connecting arm 503 and the second connecting arm 504, and the output end of the secondary driving mechanism 400 is used to connect the first photovoltaic panel connecting member 401 and the second photovoltaic panel connecting member 402; a sliding sleeve 12 is movably provided on the screw rod 11;

[0081] The sliding sleeve 12 is provided with a through hole, and the sliding sleeve 12 is sleeved on the spiral rod 11 through the through hole; the outer peripheral surface of the spiral rod 11 is formed with a spiral protrusion 1102 extending spirally around its axis, and the inner wall of the through hole of the sliding sleeve 12 is formed with a spiral groove 1202 adapted to the spiral protrusion 1102; the spiral protrusion 1102 and the spiral groove 1202 form a spiral guide structure; through the cooperation of the spiral groove 1202 and the spiral protrusion 1102, the spiral guide connection between the sliding sleeve 12 and the spiral rod 11 is realized;

[0082] The spiral guide structure between the sleeve 12 and the screw rod 11 may also adopt other structures that can produce a spiral guide effect; for example, a spiral groove may be arranged on the outer peripheral surface of the screw rod 11, and a spiral protrusion may be arranged on the inner wall of the through hole of the sleeve 12; or a first spiral groove may be arranged on the inner wall of the through hole of the sleeve 12, a second spiral groove may be arranged on the outer peripheral surface of the screw rod 11, and a plurality of balls may be arranged between the first spiral groove and the second spiral groove, which may also realize a spiral guide connection between the sleeve 12 and the screw rod 11.

[0083] The sleeve 12 is connected to the transmission member; the transmission member includes an active member connected to the 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;

[0084] Specifically, the sliding sleeve 12 is provided with a fixing part positioning hole 1203, and a screw nut 15 (driven part) is inserted into the fixing part positioning hole 1203. The screw nut 15 is fixedly connected to the sliding sleeve 12 through a plurality of bolts; the screw nut 15 is provided with an internal threaded hole, and the screw nut 15 is movably connected to the screw 14 (active part) through the internal threaded hole;

[0085] Both ends of the screw rod 14 are connected to the mounting seat 13 through the first bearing 17 respectively; the screw rod 14 can rotate relative to the fixed mounting seat 13; one end of the screw rod 14 is used as the input end of the driving mechanism and is connected to the power source; the power source can be an electrically driven motor, a cylinder driven by compressed air, or a hydraulic cylinder driven by liquid, etc.

[0086] Both 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;

[0087] The outer cover of the spiral rod 11 is provided with a housing 16 (as a fixing member);

[0088] The outer peripheral surface of the 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;

[0089] Specifically, the outer peripheral surface of the sliding sleeve 12 is formed with a guide groove 1201 extending in the axial direction as a first axial guide structure, and the inner wall of the housing 16 is formed with a guide protrusion 1601 that matches the guide groove 1201 of the sliding sleeve 12 as a second axial guide structure; through the cooperation between the guide groove 1201 and the guide protrusion 1601, the movable connection between the sliding sleeve 12 and the housing 16 is realized;

[0090] Of course, the first axial guide structure may be a guide protrusion, and the second axial guide structure may be a guide groove; or, the first axial guide structure and the second axial guide structure may both be guide grooves, and a plurality of intermediate parts of the axial guide structure may 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 may also realize a movable connection between the sleeve 12 and the housing 16.

[0091] The working principle of the driving mechanism of the present invention is as follows:

[0092] 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.

[0093] 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 prevent the rotation of the screw rod 11 from affecting the linear movement of the sleeve 12.

[0094] The present invention can realize the rotation of the screw rod 11 within a small angle range (for example, not more than 360°) through a power source. The maximum rotation angle of the screw rod 11 depends on the size of the helical angle of the spiral protrusion 1102 of the screw rod 11 and the length of the screw rod 11. By adjusting the size of the helical angle of the spiral protrusion 1102 of the screw rod 11 and the length of the screw rod 11, the screw rod 11 can be rotated at a small angle within a range of not more than 180°.

[0095] Preferably, the helical angle of the spiral guide structure does not exceed 40°; wherein the helical 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, such as Figure 4 shown.

[0096] Since the degree of the helix angle does not exceed 40°, when the screw rod 11 of the present invention needs to rotate, the screw rod 14 is driven by the power source to rotate, and 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 screw rod 11 to rotate. The present invention can realize the low-speed rotation of the screw rod 11 without a reduction mechanism.

[0097] During use, when the photovoltaic panel applies a torsional force to the spiral rod 11 under the action of an external force (for example, the spiral rod 11 is subjected to a huge torque due to strong wind blowing toward the photovoltaic panel), the spiral rod 11 will transmit the external force to the sliding sleeve 12; since the spiral rod 11 and the sliding sleeve 12 are connected by a spiral guide through the cooperation of the spiral protrusion 1102 and the spiral groove 1202, according to the force analysis, the spiral rod 11 will apply a thrust along the axial direction of the spiral rod 11 and a thrust along the circumferential direction of the spiral rod 11 to the sliding sleeve 12, so that the sliding sleeve 12 has a movement tendency of translation along the axial direction and rotation along the circumferential direction under the action of the thrust in the axial direction;

[0098] 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.

[0099] At the same time, when the power source drives the screw rod 14 to rotate, the screw rod 14 can provide a retaining force to the sleeve 12 through the screw nut 15 , thereby offsetting the thrust force exerted on the sleeve 12 along the axial direction of the screw rod 11 .

[0100] Under the joint action of the housing 16 and the power source, the drive shaft 301 of the present invention can prevent the sleeve 12 from making 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.

[0101] 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.

[0102] More preferably, the helix angle of the helical guide structure is greater than 5° and less than 25°.

[0103] 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 torque from the external load.

[0104] 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 axial direction of the screw rod 11 and the friction force between the guide groove 1201 and the guide protrusion 1601 are equal.

[0105] When the diameter of the spiral rod 11 is 50 mm, when the degree of the spiral angle of the spiral guide structure is different, the following data are measured at different angles in combination with a limited number of experiments:

[0106] When the helix angle is 40 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 about 850 Newtons needs to be provided along the axial direction of the screw rod 11; and in order to drive a load of 1000 Newtons, a driving force of about 1200 Newtons needs to be provided along the axial direction of the screw rod 11.

[0107] When the helix angle is 28 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 about 500 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 about 680 Newtons is required along the axial direction of the screw rod 11.

[0108] When the helix angle is 18 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 310 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 450 Newtons is required along the axial direction of the screw rod 11.

[0109] When the helix angle is 14 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 about 230 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 about 320 Newtons is required along the axial direction of the screw rod 11.

[0110] 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 about 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 about 210 Newtons is required along the axial direction of the screw rod 11.

[0111] When the helix angle is 5 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 about 75 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 about 110 Newtons is required along the axial direction of the screw rod 11.

[0112] 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.

[0113] Therefore, the present invention can significantly reduce the power requirement of the power source of the driving mechanism, and only requires a relatively small power motor to maintain the posture of the photovoltaic panel, so that the upper surface of the photovoltaic panel can maintain a posture facing the sun. Specifically, it is embodied in:

[0114] The deadweight of the photovoltaic panel is transferred to the screw rod 11 through the housing 16 via the sleeve 12, and then to the screw rod 14; since a guide structure extending along the axial direction is provided between the housing 16 and the sleeve 12, and a spiral guide structure is provided between the sleeve 12 and the screw rod 11, the two guide structures can disperse the deadweight of the photovoltaic panel, thereby avoiding the direct impact of the deadweight of the photovoltaic panel on the screw rod 14. When the photovoltaic panel stops rotating, the two guide structures can maintain the working posture of the photovoltaic panel (such as Figure 5 Therefore, the power of the power source only needs to be able to drive the screw rod 11 to rotate, thereby reducing the power requirement for the power source.

[0115] Similarly, when the photovoltaic panel is subjected to external force (such as strong wind), the external force on the photovoltaic panel needs to be transmitted to the screw rod 11 through the housing 16 via the sleeve 12, and then to the screw rod 14; therefore, the external force will not have a direct impact on the screw rod 14 either.

[0116] Furthermore, since the degree of the helix angle of the spiral guide structure does not exceed 40°; especially when the degree of the helix angle is greater than 5° and less than 25°, the spiral guide structure can greatly reduce the force transmitted to the screw rod 14, that is, the force transmitted to the power source will be greatly reduced; the screw rod 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.

[0117] In bad weather or special circumstances, the present invention can control the primary drive mechanism 300 to fold the photovoltaic panel, thereby reducing the overall impact of wind or other conditions on the photovoltaic panel, reducing wind resistance, reducing the risk of wind damage to the equipment, and making the equipment more durable. In the folded state, the photovoltaic panel can also be prevented from snow accumulation, and the power generation attenuation rate can be reduced, making the equipment more durable.

[0118] In the first embodiment of the driving mechanism of the present invention, a guiding connection is achieved between the intermediate part (i.e., the sleeve 12) and the rotating part (i.e., the screw rod 11) via a first guiding structure; a guiding connection is achieved between the intermediate part (i.e., the sleeve 12) and the fixed part (i.e., the housing 16) via a second guiding structure; wherein the first guiding structure is a spiral guiding structure; and the second guiding structure is an axial guiding structure.

[0119] Obviously, the first guide structure may be an axial guide structure, and the second guide structure may be a spiral guide structure. Figure 7 , Figure 8 As shown in the figure, as the second embodiment of the T-shaped structure of the present invention, the primary driving mechanism 300 includes a straight guide cylinder 300-11, a screw rod 300-14 is inserted into the straight guide cylinder 300-11; a screw rod nut 300-15 is movably sleeved on the screw rod 300-14; a sliding sleeve 300-12 is movably sleeved outside the straight guide cylinder 300-11; a housing 300-16 is movably sleeved outside the sliding sleeve 300-12; the screw rod nut 300-15 is fixedly connected to the sliding sleeve 300-12;

[0120] The outer periphery of the straight guide cylinder 300-11 is provided with a straight guide groove extending in the axial direction, and the inner hole of the sliding sleeve 300-12 is provided with a straight guide protrusion extending in the axial direction, so that 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;

[0121] The outer circumference of the sliding sleeve 300-12 is provided with a spiral groove, and the inner hole of the outer shell 300-16 is provided with a spiral protrusion, so that a spiral guide structure is formed between the outer circumference of the sliding sleeve 300-12 and the inner hole of the outer shell 300-16;

[0122] Specifically, an insert 300-1501 is fixedly disposed on the outside of the screw nut 300-15, a guide slot 300-1101 extending in the axial direction is opened on the side of the straight guide cylinder 300-11, and the insert 300-1501 is movably disposed in the guide slot 300-1101 of the straight guide cylinder 300-11;

[0123] 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.

[0124] 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 through the connecting member 20, so that the secondary drive mechanism 400 and the primary drive mechanism 300 form a T-shaped structure;

[0125] The outer movable sleeve of the straight guide rod 400-11 is provided with a guide cylinder 400-12; the outer periphery of the straight guide rod 400-11 is provided with a straight guide groove 400-1101 extending in the axial direction, and the inner hole of the guide cylinder 400-12 is provided with a straight guide protrusion extending in the axial direction, and an axial guide structure is formed between the outer periphery of the straight guide rod 400-11 and the inner hole of the guide cylinder 400-12;

[0126] 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 movable sleeve of the guide cylinder 400-12 is 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, and a spiral guide structure is formed between the outer periphery of one end of the guide cylinder 400-12 and the inner hole of the outer cylinder 400-16.

[0127] The working principle of the second embodiment of the driving mechanism of the present invention is as follows:

[0128] The screw 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 300-14 drives the screw nut 300-15 to perform translational motion along the axial direction of the screw 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 the sleeve 300-12 drives the outer shell 300-16 to rotate around its own rotation axis through the coordinated guiding effect of the spiral guide structure between the sleeve 300-12 and the outer shell 300-16 during the translation process, thereby realizing a small angle rotation of the outer shell 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;

[0129] The screw 400-14 of the secondary drive mechanism 400 is driven to rotate by another power source, and the rotation of the screw 400-14 drives the guide cylinder 400-12 to make 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.

[0130] like Figure 5 The second embodiment of the dual-axis tracking photovoltaic device with folding function of the present invention is shown. The difference from the first embodiment is that the other side of the fixed bracket 500 is fixedly connected to the second primary drive mechanism 901 extending along the transverse direction, and the second primary drive mechanism 901 is connected to the second secondary drive mechanism 900 extending along 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.

[0131] 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 300 and the secondary drive mechanism 400. 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 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200, which will not be repeated here.

[0132] The second embodiment of the present invention arranges the first photovoltaic panel 100 and the second photovoltaic panel 200 (i.e., the first photovoltaic panel assembly) on one side of the vertical pole 600, and arranges the third photovoltaic panel 700 and the fourth photovoltaic panel 800 (i.e., the second photovoltaic panel assembly) on the other side of the vertical pole 600, so that the rotation axes of the first photovoltaic panel assembly and the second photovoltaic panel assembly along the horizontal axis are respectively arranged on both sides of the vertical pole 600. In the process of 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 keep its lighting surface at the maximum.

[0133] Preferably, the rotation axis of the primary drive mechanism 300 is parallel to the rotation axis of the second primary drive mechanism 901 .

[0134] Of course, even if the rotation axis of the first-stage drive mechanism 300 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 a sufficient distance between the first-stage drive mechanism 300 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.

[0135] The second embodiment of the present invention can simultaneously set four photovoltaic panels, which can increase the number of photovoltaic panels to improve the power generation capacity while balancing the force on the poles.

[0136] The working principle of the dual-axis tracking photovoltaic device with folding function of the present invention is as follows:

[0137] The power source drives the screw rod 11 of the primary driving mechanism 300 to rotate, driving the secondary driving 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 driving mechanism 300, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the horizontal axis;

[0138] The spiral rod 11 of the secondary driving mechanism 400 is driven to rotate by another power source, driving the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary driving mechanism 400, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis;

[0139] The number of rotations of the screw rods 14 of the primary drive mechanism 300 and the secondary drive mechanism 400 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 around the vertical axis can be controlled respectively, so as to achieve accurate tracking of the sun;

[0140] When encountering strong wind, the rotation angles of the spiral rods 11 of the primary driving mechanism 300 and the secondary driving mechanism 400 are adjusted respectively, so that the planes where the first photovoltaic panel 100 and the second photovoltaic panel 200 are located are parallel to the vertical pole 600, and the first photovoltaic panel 100 and the second photovoltaic panel 200 are rotated to the lowest point, so that the surfaces of the first photovoltaic panel 100 and the second photovoltaic panel 200 are close to and fit the vertical pole 600, so as to reduce the wind-exposed area of ​​the photovoltaic panel, thereby realizing the folding and retracting of the photovoltaic panel, such as Figure 6 shown.

[0141] In the first and second embodiments, the housing 16 of the primary drive mechanism 300 is fixedly connected to the fixed bracket 500, the screw rod 11 of the primary drive mechanism 300 is fixedly connected to the housing 16 of the secondary drive mechanism 400, and the screw rod 11 of the secondary drive mechanism 400 is fixedly connected to the photovoltaic panel; that is, the housings 16 of the primary drive mechanism 300 and the secondary drive mechanism 400 are respectively used as fixed parts, and the screw rod 11 is used as a rotating part. Obviously, the screw rod 11 of the primary drive mechanism 300 and the secondary drive mechanism 400 can also be used as fixed parts, and the housing 16 can be used as a rotating part, so that the photovoltaic panel can also be rotated around the horizontal axis and around the vertical axis.

[0142] Specifically, as the third embodiment of the dual-axis tracking photovoltaic device with folding function of the present invention, the two ends 1101 of the spiral rod 11 of the primary driving mechanism 300 are respectively fixedly connected to the fixed bracket 500 through connecting pieces, so that the spiral rod 11 of the primary driving mechanism 300 is fixed; the lower part of the outer shell 16 of the primary driving mechanism 300 is fixedly connected to one end of the lower support member 501, and the upper part of the outer shell 16 of the primary driving mechanism 300 is fixedly connected to one end of the upper support member 502, and 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 fixes and wraps the middle part of the outer shell 16 of the primary driving mechanism 300, and the other end of the transmission mechanism fixed cover wraps the secondary driving mechanism 400; the other ends of the lower support member 501 and the upper support member 502 are fixedly connected to the two ends of the spiral rod 11 of the secondary driving mechanism 400; the outer shell 16 of the secondary driving mechanism 400 is fixedly connected to the first photovoltaic panel 100 and the second photovoltaic panel 200.

[0143] The working principle of the third embodiment is as follows:

[0144] When the screw 14 of the primary drive mechanism 300 is driven to rotate by a power source (such as a motor), the screw nut 15 and the sleeve 12 are driven to translate along the axial direction of the screw rod 11; due to the coordinated guiding effect of the spiral groove 1202 and the spiral protrusion 1102, the sleeve 12 can make relative rotation between the sleeve 12 and the screw rod 11 occur during the translation process. Since the screw rod 11 is fixed, the sleeve 12 can rotate during the translation process and drive the housing 16 to rotate, thereby realizing a small angle rotation of the housing 16 relative to the screw rod 11; the housing 16 of the primary drive mechanism 300 rotates, driving 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;

[0145] The screw 14 of the secondary drive mechanism 400 is driven to rotate by another power source, which drives the sleeve 12 to translate axially along the screw rod 11, thereby driving the housing 16 of the secondary drive mechanism 400 to rotate relative to the screw rod 11; the housing 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.

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

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 guide structure is a spiral guide structure; the second guide structure is an axial guide structure; or, the first guide structure is an axial guide structure; the second guide structure is a spiral guide structure.

4. The dual-axis tracking photovoltaic bracket with folding function according to claim 2, characterized in that: The primary driving mechanism and / or the secondary driving mechanism further comprises: A follower, fixedly connected to the sliding sleeve; and 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°.

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

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, so that the screw rod and the sliding sleeve rotate relative to each other, thereby realizing the 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: Also includes: A vertical pole is fixedly connected to the fixed bracket; the vertical pole extends vertically.

14. A dual-axis tracking photovoltaic device with folding function, characterized in that: It comprises a dual-axis tracking photovoltaic bracket with folding function and a photovoltaic panel as claimed in any one of claims 1 to 13, wherein the secondary driving mechanism of the dual-axis tracking photovoltaic bracket 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