CN216774663U - Photovoltaic device - Google Patents

Abstract

The application relates to and provides a photovoltaic device, which comprises a first support, a plurality of rotating shafts, a plurality of photovoltaic panels and a driving device, wherein the driving device is connected with the rotating shafts through a transmission assembly so as to drive the rotating shafts to rotate around respective axes respectively; the transmission assembly comprises a plurality of first rotating wheels, a plurality of second rotating wheels, a plurality of first rope sections, a plurality of second rope sections and a reciprocating traction seat which are matched with each other. The transmission assembly used for transmitting the driving force to the photovoltaic panel in the photovoltaic device is low in cost and high in reliability, can transmit torque to the rotating shaft driving the photovoltaic panel in a balanced mode, effectively prevents the rotating shaft and the photovoltaic panel from generating distortion, and has a limiting function on the maximum rotating angle of the photovoltaic panel.

Description

Photovoltaic device

Technical Field

The application relates to the photovoltaic field, in particular to a photovoltaic device.

Background

Solar energy is increasingly applied as a clean renewable energy source, and particularly, a tracking photovoltaic power generation technology is a new solar energy utilization technology following a conventional photovoltaic power generation technology.

The solar tracking system can keep the photovoltaic panel to face the sun as far as possible, so that the generating capacity of the solar photovoltaic module is improved, the investment cost of the photovoltaic power generation system is effectively reduced, and the utilization rate of the solar photovoltaic module is improved.

A photovoltaic tracking system adopting a plurality of photovoltaic panels to share a support is a trend of a solar tracking photovoltaic system in the future. The tracking photovoltaic support commonly used at present is mainly a single-motor connecting rod multi-point linkage structure, but the structure has a plurality of defects:

for example, the cost of parts is high, the installation is inconvenient, and the manual assembly cost is high; for another example, the connecting rod configured in the transmission mechanism is very long, so that the risk of twist deformation is easy to occur, and the service life of the tracking system is reduced; for another example, the transmission mechanism cannot transmit the driving force provided by the driving device to the photovoltaic panel more uniformly, so that the photovoltaic panel is easily distorted and deformed and even has structural damage; for example, the transmission mechanism itself does not have a function of limiting the transmission angle, and once the operation angle of the motor is not well controlled, the photovoltaic panel may be damaged by colliding with the bracket.

Disclosure of Invention

This application is in order to solve at least one among the above-mentioned problem, provides a photovoltaic device, this low price of drive assembly, the reliability that is arranged in this photovoltaic device to the transmission drive power of photovoltaic board is high, can be more balanced to the pivot transmission moment of torsion that drives the photovoltaic board, effectively prevent that pivot and photovoltaic board from producing distortion, and this drive assembly has limit function to the biggest turned angle of photovoltaic board moreover.

The technical scheme of the application is as follows:

a photovoltaic device, comprising:

a first bracket;

a plurality of rotating shafts which are arranged in parallel with each other in a first direction and each of which is connected to the first bracket so as to be rotatable about its own axis;

a plurality of photovoltaic panels arranged in the first direction and fixed to the plurality of rotating shafts in a one-to-one correspondence, respectively; and

the driving device is connected with the rotating shafts through a transmission assembly so as to drive the rotating shafts to rotate around respective axes;

the transmission assembly includes:

a plurality of first rotating wheels coaxially fixed to the plurality of rotating shafts in one-to-one correspondence, respectively, and arranged in a first row at intervals from each other along the first direction;

a plurality of second rotating wheels coaxially fixed to the plurality of rotating shafts in one-to-one correspondence, respectively, and arranged in a second row spaced apart from each other along the first direction, wherein the second row is parallel to the first row;

a plurality of first rope segments, wherein one first rope segment is respectively connected between every two adjacent first rotating wheels and between the two first rotating wheels at the extreme end, and one end of every two adjacent first rope segments respectively surrounds and is fixed to the corresponding first rotating wheel in opposite directions;

a plurality of second rope segments, wherein one second rope segment is respectively connected between every two adjacent second rotating wheels and between the two second rotating wheels at the end part, and one end of every two adjacent second rope segments respectively surrounds and is fixed to the corresponding second rotating wheel in opposite directions;

the reciprocating traction seat can reciprocate along the first direction under the driving of the driving device, one of the first rope sections is fixedly connected with the reciprocating traction seat, and the other second rope section is fixedly connected with the reciprocating traction seat.

In an alternative design, the transmission assembly further includes:

a screw base fixed to the first bracket, an

A screw rod rotatably connected to the screw rod seat and extending in the first direction;

the driving device is a motor which is fixed on the screw rod seat and drives the screw rod to rotate, the reciprocating traction seat is connected to the screw rod seat in a mode of moving along the first direction, and the reciprocating traction seat is in threaded connection with the screw rod.

In an alternative design, the screw seat includes two guide rods parallel to each other and extending along the first direction, and the reciprocating traction seat is movably connected with the two guide rods.

In an alternative design, the transmission assembly further comprises a plurality of first guide wheels and a plurality of second guide wheels rotatably connected to the first support;

for a first rope segment in the plurality of first rope segments, one end of the first rope segment is wound around a first guide wheel and then is wound around and fixed to a first rotating wheel, the other end of the first rope segment is wound around a second first guide wheel and then is wound around and fixed to a second first rotating wheel, and the first rope segment extends along the first direction between the first guide wheel and the second first guide wheel and is fixedly connected with the reciprocating traction seat;

for a second rope segment of the plurality of second rope segments, one end of the second rope segment is wound around a first second guide wheel and then is wound around and fixed to a first second rotating wheel, the other end of the second rope segment is wound around a second guide wheel and then is wound around and fixed to a second rotating wheel, and the second rope segment extends along the first direction between the first second guide wheel and the second guide wheel and is fixedly connected with the reciprocating traction seat.

In an alternative design, the first rope segment fixedly connected with the reciprocating traction seat comprises a first sub rope segment and a second sub rope segment, one end of the first sub rope segment is fixed to the reciprocating traction seat, the other end of the first sub rope segment surrounds and is fixed to a corresponding one of the first rotating wheels, one end of the second sub rope segment is fixed to the reciprocating traction seat, and the other end of the second sub rope segment surrounds and is fixed to a corresponding other one of the first rotating wheels;

and the second rope segment fixedly connected with the reciprocating traction seat comprises a third sub rope segment and a fourth sub rope segment, one end of the third sub rope segment is fixed to the reciprocating traction seat, the other end of the third sub rope segment surrounds and is fixed to the corresponding one of the second rotating wheels, one end of the fourth sub rope segment is fixed to the reciprocating traction seat, and the other end of the fourth sub rope segment surrounds and is fixed to the corresponding other one of the second rotating wheels.

In an optional design, the transmission assembly further includes a plurality of first guide wheels and a plurality of second guide wheels rotatably connected to the first bracket, two ends of each first rope segment respectively pass by and then respectively surround and are fixed to two corresponding first rotating wheels, two ends of each second rope segment respectively pass by and then respectively surround and are fixedly connected to two corresponding second rotating wheels, each first rope segment extends in the first direction between two corresponding first guide wheels, and each second rope segment extends in the first direction between two corresponding second guide wheels.

In an optional design, the transmission assembly further includes at least one first guide wheel and at least one second guide wheel rotatably connected to the first support, each of the first guide wheels corresponds to one of the first rotating wheels, and each of the second guide wheels corresponds to one of the second rotating wheels;

one end of each of at least two adjacent first rope segments respectively bypasses the corresponding first guide wheel in opposite directions and then surrounds and fixes the corresponding first rotating wheel in opposite directions, and the first guide wheels and the corresponding first rotating wheels are arranged in an X-shaped crossed manner between the corresponding first guide wheels and the corresponding first rotating wheels;

one end of at least two adjacent second rope segments respectively bypasses the corresponding second guide wheels in opposite directions and then surrounds and fixes the corresponding second rotating wheels in opposite directions, and the two second rope segments are arranged between the corresponding second guide wheels and the second rotating wheels in an X-shaped crossed manner.

In an alternative design, at least two adjacent rope segments are integrally connected, and the non-end positions of the two integrally connected rope segments are fixed on the corresponding first rotating wheels;

at least part of two adjacent second rope segments are integrally connected, and the non-end parts of the integrally connected two second rope segments are fixed on the corresponding second rotating wheels.

In an alternative design, each of the first rope segments and each of the second rope segments is a steel wire rope;

each first rope section and each second rope section are respectively connected with an elastically telescopic rope connector in series, or each first rope section and each second rope section are respectively connected with a tensioning wheel.

In an alternative design, in any working state, the sum of the angles of the ends of at least two adjacent first rope segments on the corresponding first rotating wheels is less than 360 degrees, and the sum of the angles of the ends of at least two adjacent second rope segments on the corresponding second rotating wheels is less than 360 degrees.

The application has at least the following beneficial effects:

1. the transmission assembly for transmitting the driving force to the photovoltaic panel in the photovoltaic device is a rope with low cost as main parts, and the rope mainly bears the tensile stress when in use, so that the photovoltaic device is high in reliability, not easy to damage and long in service life.

2. When the photovoltaic panel traction device works, the same reciprocating traction seat pulls the first rope section and the second rope section on two sides to move synchronously, so that the balance of tensile force on the first rotating wheel and the second rotating wheel on the rotating shaft is ensured to a certain extent, the torsional force on two sides of the rotating shaft tends to be balanced, and the rotating shaft and the photovoltaic panel on the rotating shaft are prevented from generating obvious torsional deformation.

3. Each rope and runner in this photovoltaic device transmission movable assembly adopt specific structure to mutually support, utilize the mechanical structure of transmission assembly self alright restrict the turned angle of photovoltaic board to avoid photovoltaic board and support to produce the collision, guarantee the life of photovoltaic board, also help the especially increase design of length size of the photovoltaic board.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is a schematic view of an overall structure of a photovoltaic device according to an embodiment of the present application.

Fig. 2 is a schematic structural view of the photovoltaic panel in fig. 1 after being removed.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a partial structural schematic view of fig. 2.

Fig. 5 is a partial structural schematic view of fig. 4.

Fig. 6 is a schematic structural diagram of the first turning wheel in the second embodiment of the present application.

Fig. 7 is a schematic structural diagram of two adjacent first rope segments in the second embodiment of the present application.

Fig. 8 is a schematic view of a connection structure of two adjacent first rope segments on the corresponding first pulleys in the second embodiment of the present application. Description of reference numerals:

f1 — first direction;

1-a first bracket, 2-a rotating shaft, 3-a photovoltaic panel, 4-a driving device, 5-a reciprocating traction seat, 6-a first rotating wheel, 7-a second rotating wheel, 8-a first rope section, 9-a second rope section, 10-a screw rod seat, 11-a screw rod, 12-a first guide wheel, 13-a second guide wheel, 14-a rope connector and 15-a clamping block;

601-a card slot;

801-a first sub rope segment, 802-a second sub rope segment, 901-a third sub rope segment, 902-a fourth sub rope segment;

1001-guide bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.

In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one of the two, and "a plurality" denotes no less than two.

In the description of the present application and the claims, the terms "connected," "mounted," "fixed," "housed," and the like are used broadly unless otherwise indicated. For example, "connected" may be a separate connection or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; either non-removably or removably. For example, "accommodated" does not necessarily mean that the entire body is completely accommodated, and the concept also includes a partial accommodation case in which a part protrudes outward. The specific meaning of the foregoing terms in the present application can be understood by those skilled in the art as appropriate.

In the description of the present application and in the claims, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", etc., based on the orientation or positional relationship shown in the drawings, it is merely for the convenience of clearly and simply describing the present application, and it is not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and these directional terms are relative concepts, are used for descriptive and clarifying purposes, and may be changed accordingly depending on the orientation in which the components in the drawings are placed. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present application and in the claims, the presence of the terms "in sequence" and "sequentially", for example the phrase "A, B, C arranged in sequence", merely indicates the order of arrangement of the elements A, B, C and does not exclude the possibility of arranging other elements between a and B and/or between B and C.

In the description of the present specification and claims, if there is "direction" with respect to motion, including motion having a directional component, the term "in direction" is not necessarily to be construed as motion in only that one direction, and those skilled in the art will understand the specific meaning of the aforementioned terms in the present application as the case may be.

Embodiments of the present application will now be described with reference to the accompanying drawings.

< example one >

Fig. 1 to 5 show a specific embodiment of a photovoltaic device of the present application, which comprises a first support 1, a plurality of shafts 2, a plurality of photovoltaic panels 3, and a driving device 4. Wherein:

the plurality of rotating shafts 2 are arranged in parallel to each other in the first direction F1, and each of the rotating shafts 2 is connected to the first bracket 1 in such a manner as to be rotatable about its own axis. The weight of the rotating shaft 2 is supported by the first support 1. In a specific embodiment, a plurality of bearing seats are arranged on the first bracket 1, and two ends of each rotating shaft 2 are respectively connected to two corresponding bearing seats.

The plurality of photovoltaic panels 3 are also arranged in the first direction F1, and the plurality of photovoltaic panels 3 are fixed to the plurality of shafts 2 in a one-to-one correspondence, respectively. When the rotating shaft 2 rotates, the photovoltaic panel 3 fixed with the rotating shaft 2 rotates along with the rotating shaft, so that the incident angle of the photovoltaic panel 3 is adjusted. The weight of the photovoltaic panel 3 is also borne by the first support 1.

The driving device 4 is connected with the plurality of rotating shafts 2 through the transmission assembly to drive the rotating shafts 2 to rotate around respective axes respectively, and then the angle of each photovoltaic panel 3 is adjusted.

The transmission assembly comprises a plurality of first pulleys 6, a plurality of second pulleys 7, a plurality of first rope segments 8, a plurality of second rope segments 9 and a reciprocating traction seat 5. Wherein:

the plurality of first pulleys 6 are coaxially fixed to the plurality of rotating shafts 2 in a one-to-one correspondence, respectively, and the plurality of first pulleys 6 are arranged in a line at intervals from each other in the first direction F1. For convenience of description, the row in which the plurality of first pulleys 6 are located is referred to herein as a first row.

The plurality of second runners 7 are coaxially fixed to the plurality of rotary shafts 2 in a one-to-one correspondence, respectively, and the plurality of second runners 7 are arranged in a line at intervals from each other in the first direction F1. For the sake of convenience of description, the line in which the plurality of second wheels 7 are located is referred to herein as a second line, which is parallel to the first line.

A first rope portion 8 is connected between every two adjacent first pulleys 6 and between the two first pulleys 6 at the extreme end, and one end of every two adjacent first rope portions 8 is wound around and fixed to the corresponding first pulley 6 in opposite directions.

Referring to fig. 2 and 4, the above "surrounding and fixed to in opposite directions, respectively" has the meaning: for two adjacent first rope portions 8, one end of one first rope portion 8 is wound around and fixed to the corresponding first pulley 6 in a clockwise direction, and one end of the other first rope portion 8 is wound around and fixed to the first pulley 6 in a counterclockwise direction, and the winding directions of the two first rope portions 8 on the same first pulley 6 are opposite.

It is understood that "surrounding" includes surrounding around the entire circumference, as well as surrounding around less than the entire circumference (e.g., half-circumference or 1/8-circumference).

Because one end of each of two adjacent first rope portions 8 (the first rope portion 8 and the second rope portion 8) respectively surrounds and is fixed to the corresponding first pulley 6 in opposite directions, when the first rope portion 8 pulls the first pulley 6 to rotate so that the first rope portion 8 is unreeled from the first pulley 6, the first pulley 6 necessarily reels the second first rope portion 8.

A second rope portion 9 is connected between every two adjacent second pulleys 7 and between the two second pulleys 7 at the end part, and one end of every two adjacent second rope portions 9 is wound around and fixed to the corresponding second pulley 7 in opposite directions.

The reciprocating traction base 5 can reciprocate along the first direction F1 under the driving of the driving device 4, wherein, a first rope segment 8 is fixedly connected with the reciprocating traction base 5, and a second rope segment 9 is fixedly connected with the reciprocating traction base 5.

Referring to fig. 1 to 4, if it is intended to rotate each photovoltaic panel 3 in fig. 1 to a desired inclination angle in a counterclockwise direction around the axis of the rotating shaft 2, the driving device 4 can be controlled to drive the reciprocating traction base 5 to move leftward in fig. 2 and 4, and the reciprocating traction base 5 simultaneously pulls the first rope segment 8 and the second rope segment 9 fixed thereto to move leftward. The first rope segment 8 moving to the left pulls the first rotating wheel 6 on the right side in fig. 4 to rotate counterclockwise, the second rope segment 9 moving to the left pulls the second rotating wheel 7 on the right side in fig. 4 to rotate counterclockwise, the first rotating wheel 6 rotating to the right counterclockwise and the second rotating wheel 7 on the right counterclockwise in fig. 4 pull the first rope segment 8 and the second rope segment 9 to roll up, further pull the first rotating wheel 6 and the second rotating wheel 7 on the more right side, which are not shown in fig. 4, to rotate counterclockwise, so all the rotating shafts 2 are pulled to rotate counterclockwise (wherein the rotating shaft 2 on the leftmost side in fig. 2 is pulled by the rotating shaft 2 on the rightmost side through the corresponding first rope segment 8 to rotate), thereby driving each photovoltaic panel 3 in fig. 1 to rotate counterclockwise to a required angle.

In the above-mentioned accommodation process, because of all being fixed with first runner 6 and the second runner 7 that separate each other on every pivot 2 coaxially, first runner 6 and second runner 7 all exert the rotation moment of torsion to pivot 2 under the pulling of rope, so improved the rotation smoothness of pivot 2, reduced pivot 2 and photovoltaic board 3's torsional deformation degree, and then prevented to fix photovoltaic board 3 on pivot 2 and produce and warp. Preferably, the first and second wheels 6 and 7 are respectively connected to opposite ends of the shaft 2. And when the photovoltaic cable is in operation, the same reciprocating traction seat 5 pulls the first rope section 8 and the second rope section 9 on the two sides to synchronously move, so that the balance of tensile force on the first rotating wheel 6 and the second rotating wheel 7 on the rotating shaft 2 is ensured to a certain extent, the torsional force on the two ends of the rotating shaft tends to be balanced, and the rotating shaft and the photovoltaic panel on the rotating shaft are prevented from generating obvious torsional deformation.

In the present embodiment, the driving device 4 drives the reciprocating traction base 5 to reciprocate along the first direction F1 through the lead screw 11 mechanism. Specifically, the transmission assembly further includes a screw base 10 and a screw 11, wherein the screw base 10 is fixed on the first bracket 1, the screw 11 is rotatably connected to the screw base 10, and the length of the screw 11 extends in the first direction F1. The reciprocating traction block 5 is coupled to the lead screw block 10 in such a manner as to be movable in the first direction F1, and the reciprocating traction block 5 is screw-coupled with the lead screw 11. The driving device 4 is a motor fixed on the screw seat 10, and the motor is connected with the screw 11 to drive the screw 11 to rotate, so as to drive the reciprocating traction seat 5 in threaded connection with the screw 11 to move along the first direction F1 through the rotating screw 11.

In order to improve the stability of the reciprocating traction base 5 moving along the first direction F1, the screw base 10 further includes two guide rods 1001 which are parallel to each other and extend along the first direction F1, and the reciprocating traction base 5 is movably connected with the two guide rods 1001.

Referring to fig. 1 to 4 again, in order to increase the rotatable angle of the photovoltaic panel 3 and prevent the photovoltaic panel 3 from touching the first rope segment 8 or the second rope segment 9 during large-angle rotation to cause structural damage, the transmission assembly of the embodiment is further provided with a plurality of first guide wheels 12 and a plurality of second guide wheels 13 rotatably connected to the first bracket 1. The two first rotating wheels 6 at the end correspond to two first guide wheels 12 respectively, and the other first rotating wheels 6 correspond to one first guide wheel 12 respectively. The two second turning wheels 7 at the end correspond to two second guide wheels 13 respectively, and the other second turning wheels 7 correspond to one second guide wheel 13 respectively. Two ends of each first rope segment 8 respectively bypass two corresponding first guide wheels 12 and then respectively surround and are fixed to two corresponding first rotating wheels 6, and two ends of each second rope segment 9 respectively bypass two corresponding second guide wheels 13 and then respectively surround and are fixedly connected to two corresponding second rotating wheels 7. Furthermore, by the first and second guide wheels 12, 13 guiding the first and second rope portions 8, 9, each first rope portion 8 extends between the corresponding two first guide wheels 12 in the first direction F1, and each second rope portion 9 extends between the corresponding two second guide wheels 13 in the first direction F1.

By guiding the main part of the respective first and second rope portion 8, 9 to a position at a distance from the respective rotation axis 2 by means of the guide wheels and extending along the first direction F1, not only is the rotational interference of the respective rope portion with the photovoltaic panel 3 reduced, but also the structural integrity of the photovoltaic device is facilitated to be improved. It can be understood that if the first guide wheel 12 and the second guide wheel 13 in fig. 2 and 4 are eliminated, the rotatable angle range of the photovoltaic panel 3 is greatly reduced.

Referring to fig. 2 and 4, the reciprocating traction seat 5 is fixedly connected to the extending portion of the first rope segment 8 in the first direction F1, and is fixedly connected to the extending portion of the second rope segment 9 in the first direction F1. It can be understood that the moving direction of the reciprocating traction base 5 and the extending direction of the first rope segment 8 part and the second rope segment 9 part fixed with the reciprocating traction base 5 are the same direction, which is helpful for improving the working stability of the photovoltaic device.

Further, referring to fig. 4 again, the first rope segment 8 fixedly connected to the reciprocating traction base 5 includes a first sub-rope segment 801 and a second sub-rope segment 802. One end of the first sub-rope segment 801 is welded or fixed to the reciprocating traction base 5 by a bayonet, and the other end thereof passes around and is fixed to a corresponding one of the first pulleys 6 after passing around a corresponding one of the first guide wheels 12. One end of the second sub-rope portion 802 is welded or fixed to the reciprocating traction seat 5 through a bayonet, and the other end of the second sub-rope portion passes by the other corresponding first guide wheel 12 and then surrounds and is fixed to the other corresponding second rotating wheel 7. It can be seen that in the present embodiment, the first rope portion 8 fixedly connected to the reciprocating traction seat 5 is not a unitary structure, but is formed by two independent rope portions, which is advantageous in that: the installation of this first rope portion 8 on this photovoltaic device is facilitated. Symmetrically, the second rope segment 9 fixedly connected with the reciprocating traction seat 5 comprises a third sub rope segment 901 and a fourth sub rope segment 902. One end of the third sub rope segment 901 is fixed to the reciprocating traction seat 5, and the other end thereof passes around and is fixed to a corresponding one of the second turning wheels 7 after passing around a corresponding one of the second guiding wheels 13. One end of the fourth sub rope portion 902 is fixed to the reciprocating traction seat 5, and the other end thereof passes around the corresponding other second guide pulley 13, and is wound around and fixed to the corresponding other second turning pulley 7.

In another embodiment, the first rope segment 8 fixedly connected with the reciprocating traction seat 5 is an integral structure, the middle part of the first rope segment is fastened on the reciprocating traction seat 5 through a locking block, and the two ends of the first rope segment respectively pass by the two corresponding first guide wheels 12 and then respectively surround and are fixed to the two corresponding first rotating wheels 6; the second rope segment 9 fixedly connected with the reciprocating traction seat 5 is of an integral structure, the middle part of the second rope segment is fastened on the reciprocating traction seat 5 through a locking block, and the two ends of the second rope segment respectively bypass the two corresponding second guide wheels 13 and then respectively surround and are fixed to the two corresponding second rotating wheels 7.

It has been mentioned above that each first wheel 6 except the two endmost first wheels 6 corresponds to one first guide wheel 12, and each second wheel 7 except the two endmost second wheels 7 corresponds to one second guide wheel 13. For the one-to-one corresponding first guide wheel 12 and first runner 6, and the one-to-one corresponding second guide wheel 13 and second runner 7, the design characteristics are also as follows: referring to fig. 2 and 4, one end of each of the two adjacent first rope segments 8 respectively passes around the corresponding first guide wheel 12 in opposite directions, and then passes around and is fixed to the corresponding first pulley 6 in opposite directions, and the two first rope segments (i.e., the two adjacent first rope segments 8) are arranged crosswise in an X shape between the corresponding first guide wheel 12 and the corresponding first pulley 6. One end of each of the two adjacent second rope portions 9 respectively passes by the corresponding second guide wheel 13 in the opposite direction, and then passes by the corresponding second turning wheel 7 in the opposite direction and is fixed, and the two adjacent second rope portions (i.e. the two adjacent second rope portions 9) are arranged between the corresponding second guide wheel 13 and the corresponding second turning wheel 7 in an X-shaped crossing manner.

It can be seen that for the first guide wheels 12 and the first turning wheels 6, which correspond to each other, and the second guide wheels 13 and the second turning wheels 7, which correspond to each other in fig. 2, each first turning wheel 6 and each second turning wheel 7 guide the run of two rope portions, respectively, and the radial forces exerted by the two rope portions on the guide wheels are opposite to each other and have a counteracting effect, thereby improving the smoothness of rotation of the first guide wheels 12 and the second guide wheels 13. Two rope segments between runner and leading wheel are X style of calligraphy alternately arranged for aforementioned offset effect is more obvious, thereby further promotes the rotation smoothness degree of leading wheel.

In this embodiment, each first rope portion 8 and each second rope portion 9 is a high-strength steel rope. If the length of the respective first and second rope portions 8, 9 is fixed and not adjustable, problems may arise that the relevant rope portion cannot be fitted to the device, or that the installed rope portion is too loose. In this regard, the present embodiment is designed as follows: an elastically extensible rope connection 14 is connected in series to each first rope portion 8 and each second rope portion 9.

The elastically stretchable rope connector 14 may be commercially available or may be designed by itself, and for example, chinese utility model patent publication No. CN212839179U discloses an elastically stretchable rope connector 14. In addition, the applicant proposed an alternative cord connector 14 in chinese patent application No. 2021222779475. Generally, the elastically stretchable cord connectors 14 are each provided with a spring.

In another embodiment, the first rope portion 8 and the second rope portion 9 are not provided with elastically stretchable rope connectors 14, but a plurality of tensioning wheels are provided on the first carrier 1, one tensioning wheel being connected to each first rope portion 8 and each second rope portion 9, respectively, so that each first rope portion 8 and second rope portion 9 is connected between two corresponding first pulleys 6 and two corresponding second pulleys 7 in a tensioning manner by means of the tensioning wheels.

In this embodiment, two adjacent first rope segments 8 or two adjacent second rope segments 9 are not directly connected (different from the second embodiment described later), and each first rope segment 8 and each second rope segment 9 are independent rope segments. The fixing mode of each rope segment end and the corresponding rotating wheel can be as follows: the rotating wheel is provided with a clamping groove, and a clamping block arranged at the end part of the rope section is clamped into the clamping groove. The applicant has proposed a possible solution in patent application No. 2021222678968.

It has been mentioned above that the "wrapping" of the first rope portion 8 and the second rope portion 9 around the first wheel 6 and the second wheel 7 may be either a full-circle or a non-full-circle wrapping. However, if each rope portion is wound around the corresponding first and second pulleys 6, 7 for a whole circumference (greater than 360 °), there will be the drawback that:

under the power of the driving device 4, the rope may pull the first rotating wheel 6 and the second rotating wheel 7 to turn over all the round or even several weeks, and then the photovoltaic panel 3 is driven to rotate all the round. If it is ensured that the photovoltaic panel 3 can rotate around the whole circle, the length of the photovoltaic panel 3 must be smaller than the length of the rotating shaft 2, otherwise (i.e. the length of the photovoltaic panel 3 is larger than the length of the rotating shaft 2), the photovoltaic panel 3 must be blocked and collided by the first support 1, and structural damage is caused. However, reducing the length of the photovoltaic panel 3 not only reduces the power generation capacity of the photovoltaic device, but also causes an increase in the overall cost of the photovoltaic device.

For the above reasons, in order to limit the rotatable range of the photovoltaic panel 3 to an angle that does not block collision with the first rack 1, the present embodiment is designed such that: in any operating state, the sum of the angles of the ends of at least two first rope portions 8 adjacent to each other on the corresponding first pulley 6 is less than 360 degrees.

When one of the first rope portions 8 pulls the corresponding first pulley 6 to rotate, the rope portion is unwound from the first pulley 6, and the winding angle of the rope portion on the first pulley 6 gradually decreases. After the first rope segment 8 is unreeled until the end part of the first rope segment is straightened and the pulling force direction of the first rotating wheel 6 passes through the rotating axis of the first rotating wheel 6, the pulling force of the first rope segment 8 on the first rotating wheel 6 can not generate a rotating moment, no matter how much pulling force is applied to the first rotating wheel 6 by the first rope segment 8, the first rotating wheel 6 can not continue to rotate due to the pulling force, and the unreeling angle of the first rotating wheel 6 is about the original surrounding angle. Similarly, the unwinding angle of another first rope segment 8 corresponding to and adjacent to the first rope segment 8 has the same characteristics. Therefore, if the sum of the surrounding angles of two adjacent first rope segments 8 on the corresponding first rotating wheel 6 is less than 360 degrees, it can be ensured that the rotating angle of the corresponding first rotating wheel 6 is generally less than 360 degrees, and the rotating angle of the photovoltaic panel 3 is less than 360 degrees.

It is understood that "at least two first rope portions 8 adjacent to each other" means: it is not necessary, but not excluded, that all adjacent first rope portions 8 (or each adjacent two first rope portions 8) have the above-mentioned characteristics. In the present embodiment, the sum of the angles of the first ends of two adjacent first rope segments 8 around the corresponding first pulley 6 is less than 360 degrees, i.e. about 200 degrees.

The "operating state" in the "arbitrary operating state" means a state of the photovoltaic device in normal use, and does not include a state in inspection, and further does not include a state in which the photovoltaic device is damaged.

Further, in any working condition, the sum of the angles of the ends of at least two adjacent second rope portions 9 on the corresponding second rotating wheels 7 is less than 360 degrees.

The rotation of the rotating shaft 2 can only realize the angle adjustment of the photovoltaic panel 3 in one direction, and cannot realize the simultaneous tracking of the longitude and the latitude of the sunlight by the photovoltaic panel 3. In view of this, in another embodiment, the photovoltaic device is further provided with a second support above which the first support 1 is connected in a manner rotatable about the first axis, the weight of the first support 1 being supported by the second support. Wherein the first axis is perpendicular to the rotating shaft 2. So for each photovoltaic board 3 can rotate around two rotation axis of mutually perpendicular, and then can realize photovoltaic board 3 to the real-time vertical tracking of sunshine. The rotation of the first carriage 1 on the second carriage is driven by another motor.

< example two >

Fig. 6 to 8 show a partial structure of a photovoltaic device according to a second embodiment of the present application, which has substantially the same structure as the photovoltaic device according to the first embodiment, and can be understood with reference to the description of the first embodiment, the main difference being that:

in this embodiment, two adjacent first rope segments 8 are integrally connected, and the non-end positions of the two integrally connected first rope segments 8 are fixed on the corresponding first pulleys 6. Specifically, a clamping groove 601 is formed in the first rotating wheel 6, a clamping block 15 is arranged in the middle of each of the two first rope portions 8 which are integrally connected, and the clamping block 15 is clamped and embedded in the clamping groove 601, so that the two first rope portions 8 are fixedly connected with the first rotating wheel 6. Preferably, screws for locking the latch 15 to the first pulley 6 are also provided. Correspondingly, two adjacent second rope portions 9 are also integrally connected, and the non-end positions of the two integrally connected second rope portions 9 are fixed on the corresponding second pulleys 7 by the similar structure.

The above are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application, which is defined by the appended claims.

Claims (10)

1. A photovoltaic device, comprising:

a first bracket;

a plurality of rotating shafts which are arranged in parallel with each other in a first direction and each of which is connected to the first bracket so as to be rotatable about its own axis;

a plurality of photovoltaic panels arranged in the first direction and fixed to the plurality of rotation shafts in a one-to-one correspondence, respectively; and

the driving device is connected with the rotating shafts through a transmission assembly so as to drive the rotating shafts to rotate around respective axes;

characterized in that the transmission assembly comprises:

a plurality of first rotating wheels coaxially fixed to the plurality of rotating shafts in a one-to-one correspondence, respectively, and arranged in a first row at intervals from each other along the first direction;

a plurality of second rotating wheels coaxially fixed to the plurality of rotating shafts in one-to-one correspondence, respectively, and arranged in a second row spaced apart from each other along the first direction, wherein the second row is parallel to the first row;

a plurality of first rope segments, wherein one first rope segment is respectively connected between every two adjacent first rotating wheels and between the two first rotating wheels at the extreme end, and one end of every two adjacent first rope segments respectively surrounds and is fixed to the corresponding first rotating wheel in opposite directions;

the second rope segments are respectively connected between every two adjacent second rotating wheels and between the two second rotating wheels at the end part, and one end of each two adjacent second rope segments respectively surrounds and is fixed to the corresponding second rotating wheel in opposite directions; and

the reciprocating traction seat can reciprocate along the first direction under the driving of the driving device, one first rope segment is fixedly connected with the reciprocating traction seat, and the other second rope segment is fixedly connected with the reciprocating traction seat.

2. The photovoltaic device of claim 1, wherein the transmission assembly further comprises:

a screw base fixed to the first bracket, an

A screw rod rotatably connected to the screw rod seat and extending in the first direction;

the driving device is a motor which is fixed on the screw rod seat and drives the screw rod to rotate, the reciprocating traction seat is connected to the screw rod seat in a mode of moving along the first direction, and the reciprocating traction seat is in threaded connection with the screw rod.

3. The photovoltaic device of claim 2, wherein the lead screw base comprises two guide rods parallel to each other and extending in the first direction, and the reciprocating traction base is movably connected with the two guide rods.

4. The photovoltaic device of claim 2, wherein the transmission assembly further comprises a first plurality of guide wheels and a second plurality of guide wheels rotatably coupled to the first support;

for a first rope segment of the plurality of first rope segments, one end of the first rope segment is wound around a first guide wheel and then is wound around and fixed to a first rotating wheel, the other end of the first rope segment is wound around a second first guide wheel and then is wound around and fixed to a second first rotating wheel, and the first rope segment extends along the first direction between the first guide wheel and the second first guide wheel and is fixedly connected with the reciprocating traction seat;

for a second rope segment of the plurality of second rope segments, one end of the second rope segment is wound around a first second guide wheel and then is wound around and fixed to a first second rotating wheel, the other end of the second rope segment is wound around a second guide wheel and then is wound around and fixed to a second rotating wheel, and the second rope segment extends along the first direction between the first second guide wheel and the second guide wheel and is fixedly connected with the reciprocating traction seat.

5. The photovoltaic device of claim 1,

for the first rope segment fixedly connected with the reciprocating traction seat, the first rope segment comprises a first sub rope segment and a second sub rope segment, one end of the first sub rope segment is fixed to the reciprocating traction seat, the other end of the first sub rope segment surrounds and is fixed to the corresponding one of the first rotating wheels, one end of the second sub rope segment is fixed to the reciprocating traction seat, and the other end of the second sub rope segment surrounds and is fixed to the corresponding other one of the first rotating wheels;

and the second rope segment fixedly connected with the reciprocating traction seat comprises a third sub rope segment and a fourth sub rope segment, one end of the third sub rope segment is fixed to the reciprocating traction seat, the other end of the third sub rope segment surrounds and is fixed to the corresponding one of the second rotating wheels, one end of the fourth sub rope segment is fixed to the reciprocating traction seat, and the other end of the fourth sub rope segment surrounds and is fixed to the corresponding other one of the second rotating wheels.

6. The photovoltaic device according to claim 1, wherein the transmission assembly further comprises a plurality of first guide wheels and a plurality of second guide wheels rotatably connected to the first support, wherein two ends of each of the first rope segments respectively pass by and are then respectively surrounded by and fixed to the corresponding two first guide wheels, two ends of each of the second rope segments respectively pass by and are then respectively surrounded by and are fixedly connected to the corresponding two second guide wheels, each of the first rope segments extends in the first direction between the corresponding two first guide wheels, and each of the second rope segments extends in the first direction between the corresponding two second guide wheels.

7. The photovoltaic device according to claim 1, wherein the transmission assembly further comprises at least one first guide wheel and at least one second guide wheel rotatably connected to the first frame, each of the first guide wheels corresponds to one of the first rotating wheels, and each of the second guide wheels corresponds to one of the second rotating wheels;

one end of each of at least two adjacent first rope segments respectively bypasses the corresponding first guide wheel in opposite directions and then surrounds and fixes the corresponding first rotating wheel in opposite directions, and the first guide wheels and the corresponding first rotating wheels are arranged in an X-shaped crossed manner between the corresponding first guide wheels and the corresponding first rotating wheels;

one end of at least two adjacent second rope segments respectively bypasses the corresponding second guide wheels in opposite directions and then surrounds and fixes the corresponding second rotating wheels in opposite directions, and the two second rope segments are arranged between the corresponding second guide wheels and the second rotating wheels in an X-shaped crossed manner.

8. The photovoltaic device of claim 1,

at least part of two adjacent first rope segments are integrally connected, and the non-end parts of the integrally connected two first rope segments are fixed on the corresponding first rotating wheels;

at least part of the adjacent two second rope segments are integrally connected, and the non-end parts of the integrally connected two second rope segments are fixed on the corresponding second rotating wheels.

9. The photovoltaic device of claim 1,

each first rope segment and each second rope segment are steel wire ropes;

each first rope section and each second rope section are respectively connected with an elastically telescopic rope connector in series, or each first rope section and each second rope section are respectively connected with a tensioning wheel.

10. The photovoltaic device according to claim 1, wherein in any operating state, the sum of the angles of the first rope portions around the corresponding first pulleys is less than 360 degrees, and the sum of the angles of the second rope portions around the corresponding second pulleys is less than 360 degrees.

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