CN120016928A - Dual-axis tracking photovoltaic bracket and photovoltaic device with folding function - Google Patents

Abstract

The present invention discloses a dual-axis tracking photovoltaic support with a folding function, including a fixed support, a primary drive mechanism and a secondary drive mechanism. The primary drive mechanism can drive the secondary drive mechanism and the photovoltaic panel fixedly connected thereto to rotate around the rotation axis of the primary drive mechanism, thereby realizing the rotation of the photovoltaic panel around the horizontal axis; the secondary drive mechanism can drive the photovoltaic panel to rotate around the rotation axis of the secondary drive mechanism, thereby realizing the rotation of the photovoltaic panel around the vertical axis. 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. The present invention also discloses a dual-axis tracking photovoltaic device with a folding function.

Description

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

Technical Field

The invention relates to photovoltaic power generation equipment, in particular to a double-shaft tracking type photovoltaic bracket with a folding function. The invention also relates to a double-shaft tracking type photovoltaic device with the folding function.

Background

Solar energy has been increasingly used as a clean renewable energy source. The solar photovoltaic power generation equipment uses a solar photovoltaic module as a photoelectric conversion device to convert solar energy into electric energy, so that the solar energy is utilized.

Currently, in order to increase the power generation amount per unit time of a photovoltaic device, it is a common method to enlarge the size of the photovoltaic panel as much as possible. For example, chinese patent publication CN216122306U discloses a photovoltaic device comprising a plurality of photovoltaic panels arranged in a linear manner, so that the size of the photovoltaic panels is significantly increased, and thus the power generation amount can be greatly improved.

Another common method for increasing power generation is by tracking the sun with a photovoltaic panel. This is because the power generation of the photovoltaic power generation apparatus depends on the amount of solar radiation received by the photovoltaic panel. In order to improve the power generation efficiency of the photovoltaic power generation device, the upper surface of the photovoltaic panel is required to be always opposite to the sun, so as to ensure that the vertical irradiation area of sunlight is maximized, and thus the photoelectric conversion efficiency is improved. For example, a photovoltaic bracket for automatically tracking the optimal incident angle of sunlight is disclosed in chinese patent publication CN106130459B, and the photovoltaic bracket has the self-adaptive adjustment function of solar terms with different longitude and latitude and time, so as to ensure that the sunlight irradiates on a photovoltaic panel at the optimal incident angle.

Although the inclination angle and the azimuth angle of the photovoltaic support can be adjusted, the tracking range of the inclination angle is 0-110 degrees, the tracking range of the azimuth angle is-125 degrees and +125 degrees, and obviously the angle adjusting range of the photovoltaic support is limited. And the angle adjustment mode of the photovoltaic bracket is not flexible.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the double-shaft tracking type photovoltaic bracket with the folding function, which not only can drive the photovoltaic plate to rotate around the transverse shaft, but also can drive the photovoltaic plate to rotate around the longitudinal shaft, so that the angle of the photovoltaic plate can be flexibly adjusted, and the sunlight can be ensured to irradiate on the photovoltaic plate at the optimal incident angle.

In order to solve the technical problems, the technical solution of the double-shaft tracking type photovoltaic bracket with the folding function is as follows:

The photovoltaic device comprises a fixed support, a primary driving mechanism and a secondary driving mechanism, wherein a fixed part of the primary driving mechanism and a rotating part can relatively rotate, the fixed part of the primary driving mechanism is fixedly connected with the fixed support, the fixed part of the secondary driving mechanism and the rotating part can relatively rotate, the fixed part of the secondary driving mechanism is fixedly connected with the rotating part of the primary driving mechanism, the rotating part of the secondary driving mechanism is used for fixedly connecting a photovoltaic panel, a rotation axis of the primary driving mechanism extends transversely, a rotation axis of the secondary driving mechanism extends longitudinally, the primary driving mechanism and/or the secondary driving mechanism further comprises an intermediate part, the intermediate part is movably connected with the rotating part, the intermediate part is in guide connection with the rotating part through a first guide structure, the intermediate part is movably connected with the fixed part, and the intermediate part is in guide connection with the fixed part through a second guide structure.

In another embodiment, the fixing member is a housing, the rotating member is a screw rod, or the fixing member is a screw rod, the rotating member is a housing, and the intermediate member is a sliding sleeve.

In another embodiment, 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, and the second guiding structure is a spiral guiding structure.

In another embodiment, the primary driving mechanism and/or the secondary driving mechanism further comprises a driven piece and a driving piece, wherein the driven piece is fixedly connected with the sliding sleeve, the driving piece is connected with a power source, and the driving piece drives the driven piece under the driving of the power source and can drive the sliding sleeve to linearly move along the axial direction of the screw rod.

In another embodiment, the pitch angle of the helical guide is no more than 40 °.

In another embodiment, the pitch angle of the helical guide is greater than 5 ° and less than 25 °.

In another embodiment, the driving part is a screw rod, the driven part is a screw rod nut, and the screw rod rotates to drive the screw rod 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 relatively, and the screw rod and the shell rotate relatively.

In another embodiment, the sliding sleeve is provided with a through hole, and the sliding sleeve is sleeved on the screw 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;

in another embodiment, the spiral guide structure is a spiral protrusion arranged on the inner wall of the through hole and a spiral groove arranged on the outer peripheral surface of the spiral rod;

In another embodiment, the spiral guiding structure is a first spiral groove respectively arranged on the inner wall of the through hole, a second spiral groove arranged on the outer circumferential surface of the spiral rod, and a plurality of balls arranged between the first spiral groove and the second spiral groove.

In another embodiment, a first axial guiding structure extending along the axial direction is formed on the outer peripheral surface of the sliding sleeve, a second axial guiding structure matched with the first axial guiding structure is arranged on the shell, and the first axial guiding structure and the second axial guiding structure form the axial guiding structure between the sliding sleeve and the shell.

In another embodiment, the first axial guiding structure is a guiding protrusion and the second axial guiding structure is a guiding groove;

In another embodiment, the first axial guiding structure is a guiding groove and the second axial guiding structure is a guiding protrusion;

In another embodiment, the device further comprises an intermediate piece of the axial guiding structure, wherein the first axial guiding structure and the second axial guiding structure are both guiding grooves, the intermediate piece of the axial guiding structure is arranged between the first axial guiding structure and the second axial guiding structure, and guiding fit is formed through the intermediate piece of the axial guiding structure.

In another embodiment, the first-stage driving mechanisms are two groups, and the two groups of first-stage driving mechanisms are respectively and fixedly arranged on two sides of the fixed support.

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

In another embodiment, the device further comprises a vertical rod, wherein the vertical rod is fixedly connected with the fixed support, and the vertical rod extends vertically.

The invention also provides a double-shaft tracking type photovoltaic device with a folding function, which has the technical proposal that:

The double-shaft tracking type photovoltaic support with the folding function and the photovoltaic panel are characterized in that a secondary driving mechanism of the double-shaft tracking type photovoltaic support is connected with the photovoltaic panel, when a rotating piece of the primary driving mechanism and a fixing piece of the primary driving mechanism rotate relatively, the secondary driving mechanism and the photovoltaic panel fixedly connected with the secondary driving mechanism can be driven to rotate around a rotation axis of the primary driving mechanism, so that the photovoltaic panel can rotate around a transverse axis, and when the rotating piece of the secondary driving mechanism and the fixing piece of the secondary driving mechanism rotate relatively, the photovoltaic panel can be driven to rotate around the rotation axis of the secondary driving mechanism, and the photovoltaic panel can rotate around a longitudinal axis.

In another embodiment, the fixing part of the primary driving mechanism is a shell, the rotating part is a screw rod, and the shell of the primary driving mechanism is fixedly connected with the fixing support.

In another embodiment, the fixing part of the secondary driving mechanism is a shell, the rotating part is a screw rod, the shell of the secondary driving mechanism is fixedly connected with the screw rod of the primary driving mechanism, and the screw rod of the secondary driving mechanism is fixedly connected with the photovoltaic panel.

In another embodiment, a first output end of a screw rod of the primary driving mechanism is fixedly connected with one end of a first connecting arm, the other end of the first connecting arm is fixedly connected with a lower supporting piece and/or an upper supporting piece, a second output end of the screw rod of the primary driving mechanism is fixedly connected with one end of a second connecting arm, the other end of the second connecting arm is fixedly connected with the lower supporting piece and/or the upper supporting piece, a shell of the primary driving mechanism is movably connected with one ends of the lower supporting piece and the upper supporting piece, the lower supporting piece and the upper supporting piece can rotate relative to the shell of the primary driving mechanism, the other ends of the lower supporting piece and the upper supporting piece are fixedly connected with the shell of the secondary driving mechanism, and the output end of the screw rod of the secondary driving mechanism is fixedly connected with a photovoltaic plate.

In another embodiment, the fixing part of the primary driving mechanism is a screw rod, the rotating part is a shell, and the screw rod of the primary driving mechanism is fixedly connected with the fixing support.

In another embodiment, the fixing part of the secondary driving mechanism is a screw rod, the rotating part is a shell, the screw rod of the secondary driving mechanism is fixedly connected with the shell of the primary driving mechanism, and the shell of the secondary driving mechanism is fixedly connected with the photovoltaic panel.

In another embodiment, two ends of the screw rod of the primary driving mechanism are fixedly connected with the fixed support through connecting pieces respectively, the shell of the primary driving mechanism is fixedly connected with one ends of the lower supporting piece and the upper supporting piece, the other ends of the lower supporting piece and the upper supporting piece are fixedly connected with two ends of the screw rod of the secondary driving mechanism, and the shell of the secondary driving mechanism is fixedly connected with the photovoltaic panel.

The invention has the following technical effects:

the photovoltaic device has the functions of tracking and folding, so that the photovoltaic device can be installed on a wild wasteland, can be installed on an urban and agricultural land without changing the use property of the land, and solves the installation problem of a photovoltaic plate.

Specifically, when the photovoltaic device is installed on the agricultural land, the tracking angle of the photovoltaic panel is adjusted to shield according to the illumination intensity required by planting vegetation on the agricultural land, so that the illumination time of the vegetation can be controlled.

Therefore, on one hand, the problem that the installation field of the existing photovoltaic equipment is limited can be solved, the installation range of the existing photovoltaic equipment is limited to the field barren land, and the existing photovoltaic equipment can be installed on all lands without affecting the original agricultural planting function of the lands, so that the method has great significance for the land protection policy of keeping 18 hundred million mu of land red lines.

On the other hand, when the solar energy power generation device is installed on the agricultural land, not only can solar energy be converted into electric energy for utilization, but also the agricultural economy can be improved. Specifically, the photovoltaic panel can fully illuminate plants when folded and folded, and can generate electricity when unfolded. For the camping crops, the photovoltaic panel can also shade plants when being unfolded, so that the protection is formed for the plants, the evaporation of water is reduced, the crop growth environment is optimized, and the agricultural yield is improved.

When photovoltaic tracking is not needed at night, the photovoltaic panel is attached to the upright rod, so that damage to other parts such as the upright rod due to the fact that the photovoltaic panel is unfolded can be reduced as much as possible. The leveling force is reduced, the pressure on the bracket and the base is reduced, and the equipment is more reliable.

Drawings

It will be appreciated by those skilled in the art that the following description is merely illustrative of the principles of the invention, which can be applied in numerous ways to implement many different alternative embodiments. These descriptions are only intended to illustrate the general principles of the teachings of the present invention and are not meant to limit the inventive concepts disclosed herein.

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 given above and the detailed description of the drawings given below, serve to explain the principles of the invention.

The invention is described in further detail below with reference to the attached drawings and detailed description:

FIG. 1 is a schematic view of a first embodiment of a dual axis tracking photovoltaic device with folding functionality of the present invention;

FIG. 2 is an exploded schematic view of a first embodiment of a dual axis tracking photovoltaic device with folding functionality of the present invention;

FIG. 3 is an exploded schematic view of the drive mechanism of the present invention;

FIG. 4 is an enlarged partial schematic view of the screw of the present invention;

FIG. 5 is a schematic diagram of a second embodiment of the present invention;

FIG. 6 is a schematic view of a second embodiment of the present invention, the first photovoltaic panel assembly being shown in a folded configuration;

FIG. 7 is a schematic diagram of a second embodiment of the T-shaped structure of the present invention;

fig. 8 is an exploded view of a second embodiment of the T-shaped structure of the present invention.

The reference numerals in the drawings illustrate:

100 is a first photovoltaic panel, 200 is a second photovoltaic panel,

300 Is a primary drive mechanism, 400 is a secondary drive mechanism,

500 Is a fixed bracket, 600 is a vertical rod,

700 Is a third photovoltaic panel, 800 is a fourth photovoltaic panel,

901 Is a second stage drive mechanism, 900 is a second stage drive mechanism,

501 Is a lower support, 502 is an upper support,

503 Is a first connecting arm, 504 is a second connecting arm,

401 Is a first photovoltaic panel connector, 402 is a second photovoltaic panel connector,

101 Is a first connection ring of a first photovoltaic panel,

102 Is a second connection ring of the first photovoltaic panel,

201 Is a first connection ring of a second photovoltaic panel,

202 Is a second connection ring of a second photovoltaic panel,

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 shell,

17 Is a first bearing, 18 is a second bearing,

1101, 1102 Are helical protrusions,

1201 Is a guide groove, 1202 is a helical groove,

Reference numeral 1203 denotes a fixing member positioning hole, and 1601 denotes a guide projection.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As shown in fig. 1, the dual-axis tracking type photovoltaic device with folding function according to the present invention comprises a vertical rod 600, a first photovoltaic panel 100 and a second photovoltaic panel 200, wherein the vertical rod 600 extends vertically, the upper end of the vertical rod 600 is fixedly connected with a fixing support 500, one side of the fixing support 500 is fixedly connected with a primary driving mechanism 300, the rotation axis of the primary driving mechanism 300 extends transversely, the primary driving mechanism 300 is connected with a secondary driving mechanism 400, the rotation axis of the secondary driving mechanism 400 extends longitudinally, 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 with the inner side edge of the first photovoltaic panel 100, and the other side of the secondary driving mechanism 400 is fixedly connected with the inner side edge of the second photovoltaic panel 200;

The primary driving mechanism 300 is provided with a shell 16 and a spiral rod 11, and the spiral rod 11 can realize relative rotation with the shell 16, and the primary driving mechanism 300 can drive the secondary driving mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200 fixedly connected with the secondary driving mechanism 400 to rotate around the rotation axis (namely a transverse axis) of the primary driving mechanism 300;

Specifically, as shown in fig. 2, the casing 16 of the primary driving mechanism 300 is fixedly connected with a fixing bracket 500, the lower part of the casing 16 is movably connected with one end of a lower supporting member 501, the upper part of the casing 16 is movably connected with one end of an upper supporting member 502, the upper supporting member 502 and the lower supporting member 501 form a transmission mechanism fixing cover, one end of the transmission mechanism fixing cover wraps the middle part of the casing 16 in and the transmission mechanism fixing cover can rotate relative to the casing 16, and the other end of the transmission mechanism fixing cover wraps the secondary driving mechanism 400 in, so that the movable connection between the secondary driving mechanism 400 and the casing 16 of the primary driving mechanism 300 is realized;

The first output end of the screw rod 11 of the primary driving mechanism 300 is fixedly connected with one end of a first connecting arm 503, the other end of the first connecting arm 503 is fixedly connected with a lower supporting piece 501 and/or an upper supporting piece 502, the second output end of the screw rod 11 of the primary driving mechanism 300 is fixedly connected with one end of a second connecting arm 504, and the other end of the second connecting arm 504 is fixedly connected with the lower supporting piece 501 and/or the upper supporting piece 502;

When the screw rod 11 of the primary driving mechanism 300 rotates relative to the housing 16, the secondary driving mechanism 400 can be driven to rotate relative to the housing 16 and the upright rod 600 fixedly connected with the housing 16, so that the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the transverse axis is realized;

The structure of the secondary driving mechanism 400 is the same as that of the primary driving mechanism 300, and the secondary driving mechanism 400 can drive the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis (namely a longitudinal axis) of the secondary driving mechanism 400;

Specifically, the shell 16 of the secondary driving mechanism 400 is fixedly connected with a transmission mechanism fixing cover formed by an upper supporting piece 502 and a lower supporting piece 501, the first output end of the spiral rod 11 of the secondary driving mechanism 400 is fixedly connected with a first photovoltaic panel connecting piece 401, the second output end of the spiral rod 11 of the secondary driving mechanism 400 is fixedly connected with a second photovoltaic panel connecting piece 402, the first photovoltaic panel connecting piece 401 is fixedly connected with 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 piece 402 is fixedly connected with the second connecting ring 102 of the first photovoltaic panel 100 and the second connecting ring 202 of the second photovoltaic panel 200, so that the spiral rod 11 of the secondary driving mechanism 400 is fixedly connected with the first photovoltaic panel 100 and the second photovoltaic panel 200;

When the screw rod 11 of the secondary driving mechanism 400 rotates relative to the housing 16 thereof, the screw rod can drive the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate relative to the housing 16 of the secondary driving mechanism 400 and the transmission mechanism fixing cover fixedly connected with the housing 16, thereby realizing the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis.

The primary driving mechanism 300 can drive the photovoltaic panel to rotate around the transverse axis, the secondary driving mechanism 400 can drive the photovoltaic panel to rotate around the longitudinal axis, the angles of the primary driving mechanism 300 and the secondary driving mechanism 400 can be controlled at will, and therefore sunlight can be ensured to irradiate the photovoltaic panel at the optimal incident angle, and the photoelectric conversion efficiency is improved.

The first-stage driving mechanism 300 and the second-stage driving mechanism 400 have the same structure and can adopt the driving mechanism shown in fig. 3, the driving mechanism comprises a spiral rod 11 (serving as a rotating piece), two ends 1101 of the spiral rod 11 serve as output ends of the driving mechanism, the output end of the first-stage driving mechanism 300 is used for connecting a first connecting arm 503 and a second connecting arm 504, and the output end of the second-stage driving mechanism 400 is used for connecting a first photovoltaic panel connecting piece 401 and a second photovoltaic panel connecting piece 402;

The sliding sleeve 12 is provided with a through hole, 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 provided with a spiral protrusion 1102 extending spirally around the axis of the spiral protrusion 1102, the inner wall of the through hole of the sliding sleeve 12 is provided with a spiral groove 1202 matched with the spiral protrusion 1102, the spiral protrusion 1102 and the spiral groove 1202 form a spiral guide structure, and the spiral guide connection between the sliding sleeve 12 and the spiral rod 11 is realized through the cooperation of the spiral groove 1202 and the spiral protrusion 1102;

The spiral guide structure between the slide bush 12 and the spiral rod 11 may be of another structure capable of generating a spiral guide action, for example, a spiral groove may be provided on the outer peripheral surface of the spiral rod 11, a spiral protrusion may be provided on the inner wall of the through hole of the slide bush 12, or a first spiral groove may be provided on the inner wall of the through hole of the slide bush 12, a second spiral groove may be provided on the outer peripheral surface of the spiral rod 11, and a plurality of balls may be provided between the first spiral groove and the second spiral groove, and the spiral guide connection between the slide bush 12 and the spiral rod 11 may be similarly realized.

The sliding sleeve 12 is connected with a transmission part, the transmission part comprises a driving part connected with a power source and a driven part fixedly connected with the sliding sleeve 12, and the driving part drives the driven part under the drive of the power source so as to drive the sliding sleeve 12 to linearly move along the axial direction of the screw rod 11;

Specifically, a fixing piece positioning hole 1203 is formed in the sliding sleeve 12, a screw rod nut 15 (driven piece) is penetrated in the fixing piece positioning hole 1203, and the screw rod nut 15 is fixedly connected with the sliding sleeve 12 through a plurality of bolts, an internal threaded hole is formed in the screw rod nut 15, and the screw rod nut 15 is movably connected with a screw rod 14 (driving piece) through the internal threaded hole;

The two ends of the screw rod 14 are respectively connected with the mounting seat 13 through a first bearing 17, the screw rod 14 can rotate relative to the mounting seat 13 which is fixedly arranged, one end of the screw rod 14 is used as an input end of a driving mechanism and is connected with a power source, and the power source can be an electric motor driven by electricity or an air cylinder driven by compressed air or a hydraulic cylinder driven by liquid;

the two ends of the screw rod 11 are respectively and movably connected with the mounting seat 13 through second bearings 18, and the screw rod 11 can rotate relative to the fixedly arranged mounting seat 13;

the outer cover of the screw 11 is provided with a housing 16 (as a fixing member);

The outer peripheral surface of the sliding sleeve 12 is provided with a first axial guiding structure extending along the axial direction, and the shell 16 is provided with a second axial guiding structure matched with the first axial guiding structure;

Specifically, the outer circumferential surface of the sliding sleeve 12 is formed with a guide groove 1201 extending along the axial direction as a first axial guide structure, and the inner wall of the housing 16 is formed with a guide protrusion 1601 matched with the guide groove 1201 of the sliding sleeve 12 as a second axial guide structure;

Of course, the first axial guiding structure may be a guiding protrusion, the second axial guiding structure may be a guiding groove, or the first axial guiding structure and the second axial guiding structure may be guiding grooves, and a plurality of intermediate members of the axial guiding structures may be disposed between the first axial guiding structure and the second axial guiding structure to form guiding engagement, such as balls, so that the sliding sleeve 12 and the housing 16 may be movably connected.

The driving mechanism of the invention works as follows:

The power source (such as a motor) drives the screw rod 14 to rotate, the rotation of the screw rod 14 drives the screw rod nut 15 to do translational motion along the axial direction of the screw rod 14, the screw rod nut 15 drives the sliding sleeve 12 to translate along the axial direction of the screw rod 11, and the sliding sleeve 12 drives the screw rod 11 to rotate around the rotation axis of the screw rod 11 through the matching guiding action of the spiral groove 1202 and the spiral protrusion 1102 in the translational process, so that the small-angle rotation of the screw rod 11 is realized.

Because the sliding sleeve 12 is matched with the guide protrusion 1601 through the guide groove 1201, the sliding sleeve 12 is movably connected with the shell 16, and the translational movement of the sliding sleeve 12 driven by the screw nut 15 can be guided by the guide groove 1201 and the guide protrusion 1601, so that the linear movement of the sliding sleeve 12 is prevented from being influenced by the rotation of the screw rod 11.

The present invention enables the screw rod 11 to rotate in a small angular range (e.g., no more than 360 °) by a power source. The maximum rotation angle of the screw 11 depends on the size of the helix angle of the screw protrusion 1102 of the screw 11 and the length of the screw 11. The small angle rotation of the screw 11 within a range of not more than 180 ° can be achieved by adjusting the pitch angle of the screw boss 1102 of the screw 11, and the length of the screw 11.

Preferably, the pitch angle of the helical guide means, which means the angle a between the helical guide means (i.e. the helical protrusion 1102) and the axis of rotation of the screw 11, is not more than 40 degrees, as shown in fig. 4.

Because the degree of the helix angle is not more than 40 degrees, when the screw rod 11 needs to rotate, the screw rod 14 is driven by a power source to rotate, and the screw rod 14 can easily drive the screw rod nut 15 and the sliding sleeve 12 to do translational motion along the axis of the screw rod 11, so that the screw rod 11 is driven to rotate. The present invention can realize low-speed rotation of the screw rod 11 without a speed reducing mechanism.

In the use process, when the photovoltaic panel applies torsion to the spiral rod 11 under the action of external force (for example, the spiral rod 11 receives huge torsion caused by strong wind blowing to the photovoltaic panel), the spiral rod 11 can transmit the external force to the sliding sleeve 12, and as the spiral guide connection between the spiral rod 11 and the sliding sleeve 12 is realized through the cooperation of the spiral protrusion 1102 and the spiral groove 1202, according to the stress analysis, the spiral rod 11 can apply thrust along the axial direction of the spiral rod 11 and thrust along the circumferential direction of the spiral rod 11 to the sliding sleeve 12, so that the sliding sleeve 12 generates a movement trend of translating along the axial direction and rotating along the circumferential direction under the action of the thrust along the axial direction;

However, due to the guiding engagement of the guiding groove 1201 and the guiding protrusion 1601, the sliding sleeve 12 can only move linearly along the axis of the screw rod 11 relative to the housing 16 and cannot rotate, so that the pushing force of the sliding sleeve 12 along the circumferential direction of the screw rod 11 is directly transmitted to the housing 16, that is, to the member for fixing the housing 16.

Meanwhile, in the process of driving the screw rod 14 to rotate, the screw rod 14 can provide a retaining force for the sliding sleeve 12 through the screw rod nut 15, so that thrust force, along the axis direction of the screw rod 11, born by the sliding sleeve 12 can be counteracted.

Under the combined action of the shell 16 and the power source, the driving shaft 301 can avoid the abnormal movement of the sliding sleeve 12 relative to the screw rod 11 when encountering strong wind during the working process, thereby avoiding the abnormal rotation of the screw rod 11 caused by strong wind.

Therefore, the screw rod 11 of the present invention has a better resistance against external force, and the rotation state thereof is not affected by the external force.

More preferably, the pitch angle of the helical guide is greater than 5 ° and less than 25 °.

Obviously, the smaller the degree of the helix angle, the smaller the thrust along the axial direction of the screw rod 11, and at this time, only a smaller power source is required to keep the screw rod 11 stationary, so as to prevent the screw rod 11 from being rotated by the torsion from the external load.

Further, when the number of degrees of the helix angle is sufficiently small, the screw rod 11 can be kept still without any power source, and at this time, the thrust force in the axial direction of the screw rod 11 after the external force is decomposed and the friction force between the guide groove 1201 and the guide protrusion 1601 are equal.

At a diameter of the screw rod 11 of 50 mm, in the case of different degrees of the helix angle of the helical guide structure, the following data were measured in combination with a limited number of experiments at different angles:

When a 1000 newton force is applied to the screw 11 at a pitch angle of 40 degrees, the force required to be applied in the axial direction of the screw 11 is about 850 newtons in order to keep the screw 11 stationary, while the pushing force required to be applied in the axial direction of the screw 11 is about 1200 newtons in order to drive a 1000 newton load.

When a force of 1000 newtons is applied to the screw 11 at a degree of 28 degrees of the helix angle, the force required to be applied in the axial direction of the screw 11 is about 500 newtons in order to hold the screw 11 stationary, whereas the pushing force required to be applied in the axial direction of the screw 11 is about 680 newtons in order to drive a 1000 newton load.

When a 1000 n force is applied to the screw 11 at a pitch angle of 18 degrees, the force required to be applied in the axial direction of the screw 11 is about 310 n in order to keep the screw 11 stationary, whereas the pushing force required to be applied in the axial direction of the screw 11 is about 450 n in order to drive a 1000 n load.

When a force of 1000 newtons is applied to the screw 11 at a degree of the helix angle of 14 degrees, the force required to be applied in the axial direction of the screw 11 is about 230 newtons in order to hold the screw 11 stationary, whereas the pushing force required to be applied in the axial direction of the screw 11 is about 320 newtons in order to drive a 1000 newton load.

When a force of 1000 newtons is applied to the screw 11 at a pitch angle of 10 degrees, the force required to be applied in the axial direction of the screw 11 is about 150 newtons in order to keep the screw 11 stationary, while the pushing force required to be applied in the axial direction of the screw 11 is about 210 newtons in order to drive a load of 1000 newtons.

When a 1000 newton force is applied to the screw 11 at a pitch angle of 5 degrees, the force required to be applied in the axial direction of the screw 11 is about 75 newtons in order to hold the screw 11 stationary, while the pushing force required to be applied in the axial direction of the screw 11 is about 110 newtons in order to drive a 1000 newton load.

As is apparent from the above experimental data, when the number of degrees of the helical angle is smaller, only a smaller power source is required to drive the load with the same weight, and at the same time, only a smaller power source is required to keep the helical rod 11 from rotating relative to the sliding sleeve 12.

Therefore, the invention can greatly reduce the power requirement on the power source of the driving mechanism, and the posture of the photovoltaic panel can be kept only by a motor with smaller power, so that the upper surface of the photovoltaic panel keeps the posture facing the sun. The concrete steps are as follows:

The dead weight of the photovoltaic panel is transferred to the screw rod 11 through the sliding sleeve 12 by the shell 16 and then transferred to the screw rod 14, and as the guide structure extending along the axial direction is arranged between the shell 16 and the sliding sleeve 12 and the spiral guide structure is arranged between the sliding sleeve 12 and the screw rod 11, the dead weight of the photovoltaic panel can be dispersed by the two guide structures, so that the direct influence of the dead weight of the photovoltaic panel on the screw rod 14 is avoided. When the photovoltaic panel stops rotating, the two guide structures can keep the working posture (the posture shown in fig. 5) of the photovoltaic panel, so that the power of the power source can only drive the spiral rod 11 to rotate, and the power requirement on the power source is reduced.

Similarly, when the photovoltaic panel receives an external force (such as strong wind), the external force received by the photovoltaic panel needs to be transmitted to the screw rod 11 and further to the screw rod 14 through the sliding sleeve 12 by the housing 16, so that the external force also does not directly affect the screw rod 14.

Further, the degree of the helix angle of the spiral guiding structure is not more than 40 degrees, particularly when the degree of the helix angle is more than 5 degrees and less than 25 degrees, the spiral guiding structure can greatly reduce the acting force transmitted to the screw rod 14, namely the acting force transmitted to the power source can be greatly reduced, the screw rod 14 can counteract the external acting force with small additional power so as to keep the original working posture, and therefore the power requirement on the power source can be further reduced, namely a motor with smaller power is needed to resist the external acting force.

According to the invention, under severe weather or special conditions, the primary driving mechanism 300 can be controlled to fold the photovoltaic panel, so that the influence of the whole wind or other conditions on the photovoltaic panel is reduced, the windward resistance is reduced, the damage risk of wind power to equipment is reduced, and the equipment is more durable. The photovoltaic board snow can also be avoided under the folded state, and the power generation attenuation rate is also reduced, so that the equipment is more durable.

The intermediate piece (i.e. the sliding sleeve 12) and the rotating piece (i.e. the spiral rod 11) of the first embodiment of the driving mechanism are in guiding connection through a first guiding structure, the intermediate piece (i.e. the sliding sleeve 12) and the fixed piece (i.e. the shell 16) are in guiding connection through a second guiding structure, wherein the first guiding structure is a spiral guiding structure, and the second guiding structure is an axial guiding structure.

Obviously, the first guiding structure can be an axial guiding structure, and the second guiding structure can be a spiral guiding structure. As shown in figures 7 and 8, as a second embodiment of the T-shaped structure of the invention, the primary driving mechanism 300 comprises a straight guide cylinder 300-11, wherein a screw rod 300-14 is penetrated in 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 shell 300-16 is movably sleeved outside the sliding sleeve 300-12, and the screw rod nut 300-15 is fixedly connected with the sliding sleeve 300-12;

The periphery of the straight guide cylinder 300-11 is provided with a straight guide groove extending along the axial direction, the inner hole of the sliding sleeve 300-12 is provided with a straight guide protrusion extending along the axial direction, and an axial guide structure is formed between the periphery of the straight guide cylinder 300-11 and the inner hole of the sliding sleeve 300-12;

the periphery of the sliding sleeve 300-12 is provided with a spiral groove, the inner hole of the shell 300-16 is provided with a spiral protrusion, and a spiral guide structure is formed between the periphery of the sliding sleeve 300-12 and the inner hole of the shell 300-16;

Specifically, the outside of the screw nut 300-15 is fixedly provided with an inserting sheet 300-1501, the side part of the straight guide cylinder 300-11 is provided with a guide long groove 300-1101 extending along the axial direction, and the inserting sheet 300-1501 is movably arranged in the guide long groove 300-1101 of the straight guide cylinder 300-11;

The side part of the sliding sleeve 300-12 is provided with a guide short groove 300-1201 extending along the axial direction, and the inserting sheet 300-1501 is fixedly and movably arranged in the guide short groove 300-1201 of the sliding sleeve 300-12, so that the inserting sheet 300-1501 is fixedly connected with the sliding sleeve 300-12, and the fixed connection between the screw nut 300-15 and the sliding sleeve 300-12 is realized.

The outer casing 300-16 of the primary driving mechanism 300 is fixedly connected with one end of the straight guide rod 400-11 of the secondary driving mechanism 400 through the connecting part 20, so that the secondary driving mechanism 400 and the primary driving mechanism 300 form a T-shaped structure;

The outer part of the straight guide rod 400-11 is movably sleeved with a guide cylinder 400-12, the periphery of the straight guide rod 400-11 is provided with a straight guide groove 400-1101 extending along the axial direction, the inner hole of the guide cylinder 400-12 is provided with a straight guide bulge extending along the axial direction, and an axial guide structure is formed between the periphery of the straight guide rod 400-11 and the inner hole of the guide cylinder 400-12;

One end of an inner hole of the guide cylinder 400-12 is movably connected with the screw rod 400-14 through an inner threaded hole, an outer cylinder 400-16 is movably sleeved outside the guide cylinder 400-12, a spiral groove is formed in the periphery of one end of the guide cylinder 400-12, a spiral protrusion is arranged in the inner hole of the outer cylinder 400-16, and a spiral guide structure is formed between the periphery of one end of the guide cylinder 400-12 and the inner hole of the outer cylinder 400-16.

The second embodiment of the drive mechanism of the present invention operates as follows:

The screw rod 300-14 of the primary driving mechanism 300 is driven to rotate by a power source (such as a motor), the screw rod 300-14 rotates to drive the screw rod nut 300-15 to do translational motion along the axial direction of the screw rod 300-14, the screw rod nut 300-15 drives the sliding sleeve 300-12 to translate along the axial direction of the straight guide cylinder 300-11 through the inserting sheet 300-1501, the sliding sleeve 300-12 drives the shell 300-16 to rotate around the rotation axis of the shell 300-16 under the matched guiding action of the spiral guiding structure between the sliding sleeve 300-12 and the shell 300-16 in the translational process, so that the small-angle rotation of the shell 300-16 is realized, and the secondary driving mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200 connected with the secondary driving mechanism are driven to integrally rotate around the rotation axis of the primary driving mechanism 300, so that the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the transverse axis is realized;

the screw rod 400-14 of the secondary driving mechanism 400 is driven to rotate by another power source, the guide cylinder 400-12 is driven to do linear motion along the axial direction by the rotation of the screw rod 400-14, the guide cylinder 400-12 is provided with a spiral guide structure between the guide cylinder 400-12 and the outer cylinder 400-16, the outer cylinder 400-16 of the secondary driving mechanism 400 is driven to rotate around the rotation axis of the guide cylinder 400-12 relative to the guide cylinder 400-12 in the linear motion process, so that small-angle rotation of the outer cylinder 400-16 is realized, and the outer cylinder 400-16 of the secondary driving mechanism 400 drives the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary driving mechanism 400, so that rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis is realized.

As shown in fig. 5, the second embodiment of the dual-axis tracking type photovoltaic device with folding function according to the present invention is different from the first embodiment in that the other side of the fixing support 500 is fixedly connected to a second primary driving mechanism 901 extending in the transverse direction, the second primary driving mechanism 901 is connected to a second secondary driving mechanism 900 extending in the longitudinal direction, one side of the second secondary driving mechanism 900 is fixedly connected to the inner side of the third photovoltaic panel 700, and the other side of the second secondary driving mechanism 900 is fixedly connected to the inner side of the fourth photovoltaic panel 800.

The connection relationship between the second primary driving mechanism 901 and the second secondary driving mechanism 900 is the same as the connection relationship between the secondary driving mechanism 300 and the secondary driving mechanism 400, and the connection relationship between the second secondary driving mechanism 900 and the third photovoltaic panel 700 and the fourth photovoltaic panel 800 is the same as the connection relationship between the secondary driving mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200, which are not described herein again.

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 disposed on one side of the upright post 600, and the third photovoltaic panel 700 and the fourth photovoltaic panel 800 (i.e., the second photovoltaic panel assembly) are disposed on the other side of the upright post 600, so that the first photovoltaic panel assembly and the second photovoltaic panel assembly are respectively disposed on both sides of the upright post 600 along the rotation axis of the transverse axis, and in the process of rotating the photovoltaic panel assemblies around the transverse axis, no matter the photovoltaic panels are in any posture, the first photovoltaic panel 100 and the second photovoltaic panel 200 do not shade the third photovoltaic panel 700 and the fourth photovoltaic panel 800, and vice versa, so that the lighting surface of each photovoltaic panel can be always kept to be the maximum.

Preferably, the axis of rotation of the primary drive mechanism 300 is parallel to the axis of rotation of the secondary primary drive mechanism 901.

Of course, even if the rotation axis of the primary driving mechanism 300 is not parallel to the rotation axis of the secondary driving mechanism 901, the first photovoltaic panel assembly and the second photovoltaic panel assembly can be prevented from interfering with each other by changing the width of the fixing bracket 500 so that a sufficient space is provided between the primary driving mechanism 300 and the secondary driving mechanism 901, thereby preventing the photovoltaic panels from affecting the power generation efficiency due to shielding each other.

The second embodiment of the invention can simultaneously arrange four photovoltaic panels, and can balance the stress of the vertical rods while increasing the number of the photovoltaic panels to improve the power generation capacity.

The working principle of the double-shaft tracking type photovoltaic device with the folding function is as follows:

The spiral rod 11 of the primary driving mechanism 300 is driven to rotate by a power source, the secondary driving mechanism 400 and the first photovoltaic panel 100 and the second photovoltaic panel 200 connected with the secondary driving mechanism are driven to rotate as a whole around the rotation axis of the primary driving mechanism 300, and therefore the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the transverse axis is achieved;

The spiral rod 11 of the secondary driving mechanism 400 is driven to rotate by another power source to drive the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary driving mechanism 400, so that the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis is realized;

The rotation numbers of the screw rods 14 of the primary driving mechanism 300 and the secondary driving mechanism 400 are respectively controlled to adjust the rotation angles of the screw rods 11, so that the rotation angles of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the transverse axis and the longitudinal axis can be respectively controlled, and the accurate tracking of the sun is realized;

When strong wind is encountered, the rotation angles of the spiral rods 11 of the primary driving mechanism 300 and the secondary driving mechanism 400 are respectively adjusted, so that the planes of the first photovoltaic panel 100 and the second photovoltaic panel 200 are parallel to the vertical rod 600, and the first photovoltaic panel 100 and the second photovoltaic panel 200 are rotated to the lowest point, thereby enabling the surfaces of the first photovoltaic panel 100 and the second photovoltaic panel 200 to be close to and attached to the upright post 600, reducing the wind area of the photovoltaic panels, and further realizing folding and gathering of the photovoltaic panels, as shown in fig. 6.

The first embodiment and the second embodiment are that the housing 16 of the primary driving mechanism 300 is fixedly connected with the fixing bracket 500, the screw rod 11 of the primary driving mechanism 300 is fixedly connected with the housing 16 of the secondary driving mechanism 400, the screw rod 11 of the secondary driving mechanism 400 is fixedly connected with the photovoltaic panel, that is, the housing 16 of the primary driving mechanism 300 and the housing 16 of the secondary driving mechanism 400 are respectively used as fixing members, and the screw rod 11 is used as a rotating member. It is obvious that the rotation of the photovoltaic panel around the transverse axis and around the longitudinal axis can be achieved by using the screw rods 11 of the primary driving mechanism 300 and the secondary driving mechanism 400 as a fixed member and the housing 16 as a rotating member.

Specifically, as a third embodiment of the dual-axis tracking type photovoltaic device with folding function of the present invention, two ends 1101 of a screw rod 11 of a primary driving mechanism 300 are fixedly connected with a fixing bracket 500 through connecting pieces, respectively, so that the screw rod 11 of the primary driving mechanism 300 is fixedly connected with one end of a lower supporting piece 501, a lower portion of a housing 16 of the primary driving mechanism 300 is fixedly connected with one end of an upper supporting piece 502, the upper supporting piece 502 and the lower supporting piece 501 form a transmission mechanism fixing cover, one end of the transmission mechanism fixing cover fixedly wraps the middle portion of the housing 16 of the primary driving mechanism 300 in, the other end of the transmission mechanism fixing cover wraps a secondary driving mechanism 400 in, the other ends of the lower supporting piece 501 and the upper supporting piece 502 are fixedly connected with two ends of the screw rod 11 of the secondary driving mechanism 400, and the housing 16 of the secondary driving mechanism 400 is fixedly connected with a first photovoltaic panel 100 and a second photovoltaic panel 200.

The working principle of the third embodiment is as follows:

The screw rod 14 of the primary driving mechanism 300 is driven to rotate by a power source (such as a motor) to drive the screw rod nut 15 and the sliding sleeve 12 to translate along the axial direction of the screw rod 11, the sliding sleeve 12 can enable the sliding sleeve 12 to rotate relative to the screw rod 11 in the translation process due to the matched guiding action of the screw groove 1202 and the screw boss 1102, and the sliding sleeve 12 can rotate and drive the shell 16 to rotate in the translation process due to the fact that the screw rod 11 is fixed, so that the shell 16 rotates relative to the screw rod 11 at a small angle;

The screw rod 14 of the secondary driving mechanism 400 is driven to rotate by another power source, the sliding sleeve 12 is driven to translate along the axial direction of the screw rod 11, so that the shell 16 of the secondary driving mechanism 400 is driven to rotate relative to the screw rod 11, and the shell 16 of the secondary driving mechanism 400 drives the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate around the rotation axis of the secondary driving mechanism 400, so that the rotation of the first photovoltaic panel 100 and the second photovoltaic panel 200 around the longitudinal axis is realized.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (14)

1. A dual axis tracking photovoltaic bracket with folding function, comprising:

A fixing bracket is arranged on the upper surface of the bracket,

The primary driving mechanism can rotate relatively between a fixing piece and a rotating piece, the fixing piece of the primary driving mechanism is fixedly connected with the fixing bracket, and

The fixing piece of the secondary driving mechanism is fixedly connected with the rotating piece of the primary driving mechanism, and the rotating piece of the secondary driving mechanism is used for fixedly connecting a photovoltaic panel;

The rotation axis of the primary driving mechanism extends along the transverse direction, and the rotation axis of the secondary driving mechanism extends along the longitudinal direction;

The primary driving mechanism and/or the secondary driving mechanism further comprises a middle piece, the middle piece is movably connected with the rotating piece, the middle piece is in guiding connection with the rotating piece through a first guiding structure, the middle piece is movably connected with the fixing piece, and the middle piece is in guiding connection with the fixing piece through a second guiding structure.

2. The dual-axis tracking photovoltaic bracket with the folding function according to claim 1, wherein the fixing piece is a shell, the rotating piece is a screw rod, or the fixing piece is a screw rod, the rotating piece is a shell, and the middle piece is a sliding sleeve.

3. The dual-axis tracking photovoltaic support with folding function according to claim 1, wherein 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, and the second guiding structure is a spiral guiding structure.

4. The dual axis tracking photovoltaic bracket with folding function according to claim 2, wherein the primary and/or secondary drive mechanism further comprises:

A driven piece fixedly connected with the sliding sleeve and

The driving part drives the driven part and can drive the sliding sleeve to do linear motion along the axial direction of the screw rod under the driving of the power source.

5. A dual axis tracking photovoltaic support with folding function according to claim 3, characterized in that the pitch angle of the spiral guiding structure is not more than 40 degrees.

6. A dual axis tracking photovoltaic bracket with folding function according to claim 3, characterized in that the degree of helix angle of the spiral guiding structure is more than 5 ° and less than 25 °.

7. The double-shaft tracking type photovoltaic bracket with the folding function according to claim 4, wherein the driving piece is a screw rod, the driven piece is a screw rod nut, and the screw rod rotates to drive the screw rod nut and the sliding sleeve to translate along the axial direction of the screw rod so as to enable the screw rod and the sliding sleeve to rotate relatively, thereby realizing the relative rotation between the screw rod and the shell.

8. The double-shaft tracking type photovoltaic bracket with the folding function according to claim 2, wherein the sliding sleeve is provided with a through hole, and is sleeved on the screw rod through the through hole;

Or the spiral guide structure is a spiral bulge arranged on the inner wall of the through hole and a spiral groove arranged on the outer peripheral surface of the spiral rod;

or 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 peripheral surface of the spiral rod, and a plurality of balls arranged between the first spiral groove and the second spiral groove.

9. The double-shaft tracking type photovoltaic bracket with the folding function according to claim 2, wherein a first axial guiding structure extending along the axial direction is formed on the outer peripheral surface of the sliding sleeve, a second axial guiding structure matched with the first axial guiding structure is arranged on the shell, and the first axial guiding structure and the second axial guiding structure form the axial guiding structure between the sliding sleeve and the shell.

10. The dual axis tracking photovoltaic bracket with folding function according to claim 9, wherein the first axial guiding structure is a guiding protrusion and the second axial guiding structure is a guiding groove;

or the first axial guiding structure is a guiding groove, and the second axial guiding structure is a guiding protrusion;

Or the device also comprises an intermediate piece of the axial guiding structure, wherein the first axial guiding structure and the second axial guiding structure are both guiding grooves, the intermediate piece of the axial guiding structure is arranged between the first axial guiding structure and the second axial guiding structure, and guiding fit is formed by the intermediate piece of the axial guiding structure.

11. The double-shaft tracking type photovoltaic bracket with the folding function according to claim 1, wherein the two groups of primary driving mechanisms are fixedly arranged on two sides of the fixed bracket respectively.

12. The dual axis tracking photovoltaic bracket with folding function according to claim 11, wherein the axes of revolution of the two sets of primary drive mechanisms are parallel to each other.

13. The dual axis tracking photovoltaic bracket with folding function of claim 1, further comprising:

the vertical rod is fixedly connected with the fixing support and extends vertically.

14. A dual-axis tracking type photovoltaic device with a folding function, which is characterized by comprising the dual-axis tracking type photovoltaic bracket with the folding function as claimed in any one of claims 1 to 13 and a photovoltaic panel, wherein a secondary driving mechanism of the dual-axis tracking type photovoltaic bracket is connected with the photovoltaic panel;

When the rotating piece of the primary driving mechanism and the fixing piece of the primary driving mechanism rotate relatively, the secondary driving mechanism and the photovoltaic panel fixedly connected with the secondary driving mechanism can be driven to rotate around the rotation axis of the primary driving mechanism, so that the photovoltaic panel can rotate around the transverse shaft;

When the rotating piece of the secondary driving mechanism and the fixing piece of the secondary driving mechanism rotate relatively, the photovoltaic panel can be driven to rotate around the rotation axis of the secondary driving mechanism, and therefore the photovoltaic panel can rotate around the longitudinal axis.