CN216390886U - Rotary transmission structure of photovoltaic panel - Google Patents

Abstract

The application relates to a rotary transmission structure of a photovoltaic panel, which comprises at least one transmission unit, wherein each transmission unit comprises a rotating shaft, a third rotating wheel, a ninth guide wheel and a fifth rope, the rotating shaft is used for supporting the photovoltaic panel to drive the photovoltaic panel to rotate along with the rotating shaft, the third rotating wheel is coaxially fixed with the rotating shaft, and a clamping groove is formed in the third rotating wheel; the fifth rope is in winding connection with the third rotating wheel, a clamping block clamped in the clamping groove is fixed on the fifth rope, and the first end and the second end of the fifth rope are respectively led out from two sides of the third rotating wheel, then pass through the ninth guide wheel in opposite directions and are connected to power equipment. The transmission assembly used for transmitting the driving force to the photovoltaic panel in the transmission structure is low in cost and high in reliability, and the transmission structure has a limiting function on the maximum rotation angle of the photovoltaic panel.

Description

Rotary transmission structure of photovoltaic panel

Technical Field

The application relates to the photovoltaic field, concretely relates to rotary transmission structure of photovoltaic board.

Background

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.

The photovoltaic tracking system adopting the support shared by the photovoltaic panels is a trend of the future solar tracking photovoltaic system, and the driving force provided by the power equipment is transmitted to the photovoltaic panels through the rotary transmission structure so as to drive the photovoltaic panels to rotate, so that the incident angle of the photovoltaic panels is adjusted. However, the tracking photovoltaic support commonly used at present is mainly a single-motor link multi-point linkage structure, but the structure has many 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 itself does not have a function of limiting the transmission angle, and once the operation angle of the power motor is not well controlled, the photovoltaic panel may be damaged by colliding with the bracket.

Disclosure of Invention

The technical problem that this application was solved is: the utility model provides a rotatory transmission structure of photovoltaic board, this transmission structure is used for the transmission subassembly of driving force to the photovoltaic board this cheap, the reliability is high, and this transmission structure has limit function to the biggest turned angle of photovoltaic board moreover.

The technical scheme of the application is as follows:

a rotary transmission structure of a photovoltaic panel comprises at least one transmission unit, wherein each transmission unit comprises a rotating shaft, a third rotating wheel, a ninth guide wheel and a fifth rope, the rotating shaft is used for supporting the photovoltaic panel to drive the photovoltaic panel to rotate along with the rotating shaft, the third rotating wheel is coaxially fixed with the rotating shaft, and a clamping groove is formed in the third rotating wheel; the fifth rope is in winding connection with the third rotating wheel, a clamping block clamped in the clamping groove is fixed on the fifth rope, and a first end and a second end of the fifth rope are respectively led out from two sides of the third rotating wheel, then pass through the ninth guide wheel in opposite directions and are connected to power equipment.

In an alternative design, the first end of the fifth rope extends in a negative direction of a first direction after being led out from the third wheel, and the second end of the fifth rope extends in a positive direction of the first direction after being led out from the third wheel, wherein the first direction is a straight direction.

In an alternative design, the rotary drive structure further includes a first rope having a first rope segment projecting in a positive direction of the first direction and a second rope having a third rope segment projecting in a negative direction of the first direction, the power device being configured to: pulling the first rope segment to move along the negative direction of the first direction, and pulling the third rope segment to move along the positive direction of the first direction;

the transmission units are plural, the first end of each of the fifth ropes in the plural transmission units is fixed to the first rope segment by a first connector, and the second end of each of the fifth ropes in the plural transmission units is fixed to the third rope segment by a second connector.

In an optional design, the first connector includes a first body fixed to the first rope portion, and a second body fixed to the first end, the first body includes a first through hole extending in the first direction, the second body includes a first screw extending in the first direction, and the first screw movably penetrates through the first through hole and is in threaded connection with a first nut;

the second connector comprises a third body fixed with the third rope section and a fourth body fixed with the second end, the third body comprises a second through hole extending along the first direction, the fourth body comprises a second screw extending along the negative direction of the first direction, and the second screw movably penetrates through the second through hole and is in threaded connection with a second nut.

In an optional design, the first body comprises a third through hole which is sleeved outside the first rope section and is welded and fixed with the first rope section, the second body comprises a first caulking groove, and the first end of the fifth rope is provided with a first caulking head which is detachably clamped and embedded in the first caulking groove;

the third body comprises a fourth through hole which is sleeved outside the third rope section and is fixedly welded with the third rope section, the fourth body comprises a second caulking groove, and the second end of the fifth rope is provided with a second caulking head which is detachably clamped and embedded in the second caulking groove.

In an alternative design, the first body comprises the first chamber for accommodating the second body, and the wall of the first chamber blocks the first rabbet from being detached from the first rabbet; the third body comprises a second chamber for accommodating the fourth body, and the cavity wall of the second chamber blocks the second embedded head from being separated from the second embedded groove; the second body comprises a first guide hole, the fourth body comprises a second guide hole, the first rope segment movably penetrates through the first guide hole, and the third rope segment movably penetrates through the second guide hole.

In an alternative design, the rotary drive arrangement further comprises a first and a third tie rod connected to the power plant, the first and third tie rods each extending along the first direction, the power plant being configured to: the first pull rod is pulled to move along the negative direction of the first direction, and the third pull rod is pulled to move along the positive direction of the first direction;

the transmission unit is in a plurality, the first end of each of the fifth ropes in the plurality of transmission units is fixed to the first pull rod, and the second end of each of the fifth ropes in the plurality of transmission units is fixed to the third pull rod.

In an alternative design, the angle of the fifth rope around the third pulley is less than 360 degrees.

In an optional design, a ring groove directly communicated with the clamping groove is formed in the peripheral side of the third rotating wheel, and the fifth rope is wound in the ring groove.

In an alternative design, the rotating shaft and the ninth guide wheel are both rotatably mounted on the first bracket.

The application has at least the following beneficial effects:

1. the main parts of the transmission structure are ropes with low cost, and the ropes mainly bear tensile stress when in use, so that the transmission structure is high in reliability, not easy to damage and long in service life.

2. Each rope and runner adopt specific structure to mutually support among this transmission structure, utilize the mechanical structure of drive assembly self alright restriction photovoltaic board's turned angle to avoid photovoltaic board and support to produce the collision, guarantee the life of photovoltaic board, also help the increase design of the photovoltaic board size especially length size.

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 system according to an embodiment of the present application.

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

Fig. 3 is a schematic structural view of fig. 2 with parts removed.

Fig. 4 is an enlarged view of the X1 portion of fig. 3.

Fig. 5 is an enlarged view of the portion X2 of fig. 3.

Fig. 6 is an enlarged view of the X3 portion of fig. 3.

Fig. 7 is an enlarged view of the portion X4 of fig. 3.

Fig. 8 is a schematic view of a photovoltaic system in another embodiment of the present application.

Fig. 9 is a schematic view of the overall structure of a photovoltaic system in another embodiment of the present application.

Fig. 10 is a schematic structural view of fig. 9 with parts removed.

Fig. 11 is a schematic view of the structure of the reciprocating pull rod of fig. 9.

Fig. 12 is a schematic view of the structure of the third rotor of fig. 9.

Fig. 13 is a schematic view of the third rope of fig. 9.

Figure 14 is a schematic view of the third wheel, third cable and connector assembly of figure 9.

Fig. 15 is a schematic view of the structure of a third rope in another embodiment of the present application.

Fig. 16 is a schematic view of the third wheel, third cable and connector of the embodiment corresponding to fig. 15.

Fig. 17 is a schematic cross-sectional view of the first connector of fig. 16.

Description of reference numerals:

f1 — first direction;

1-a first support, 2-a rotating shaft, 3-a photovoltaic panel, 4-a power plant, 5-a reciprocating lever, 6-a first rotating wheel, 7-a second rotating wheel, 8-a third rotating wheel, 9-a fourth rotating wheel, 10-a first rope, 11-a second rope, 12-a third rope, 13-a fourth rope, 14-a screw seat, 15-a first guide wheel, 16-a second guide wheel, 17-a third guide wheel, 18-a fourth guide wheel, 19-a fifth guide wheel, 20-a sixth guide wheel, 21-a seventh guide wheel, 22-an eighth guide wheel, 23-a ninth guide wheel, 24-a tenth guide wheel, 25-a clamping block, 26-a first connector, 27-a second connector, 28-a third connector, 29-a fourth connector;

501-a first pole segment, 502-a second pole segment, 503-a third pole segment, 504-a fourth pole segment, 505-a fifth pole segment, 506-a sixth pole segment, 507-a seventh pole segment, 508-a first elastic element, 509-a second elastic element;

801-card slot;

1001-first rope segment, 1002-second rope segment;

1101-a third rope portion, 1102-a fourth rope portion;

1201-first scarf joint, 1202-second scarf joint;

2601-a first body, 2602-a second body, 2603-a first nut, 2601 a-a first through hole, 2601 b-a second through hole, 2601 c-a first chamber, 2602 a-a first screw, 2602 b-a first caulking groove, 2602 c-a first pilot hole;

2701-third body, 2702-fourth body, 2703-second nut, 2701 a-third through hole, 2701 b-fourth through hole, 2701 c-second chamber, 2702 a-second screw, 2702 b-second caulking groove, 2702 c-second guide hole.

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; may be non-detachably connected or may be detachably connected. 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 only for the convenience of clearly and simply describing the present application, and it is not indicated or implied that the elements referred to must have a specific direction, be constructed and operated in a specific orientation, and these directional terms are relative concepts for the sake of description and clarification and may be changed accordingly according to the change of orientation in which the elements 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 specification and claims of this application, the term "configured to" if present is generally interchangeable with "… capable", "designed to", "for", or "capable", depending on the context.

In order to facilitate the reader to understand the rotation transmission structure of the photovoltaic panel, a photovoltaic system using the related structure will be described.

Fig. 1 to 7 show a photovoltaic system comprising a first support 1, a plurality of shafts 2, a plurality of photovoltaic panels 3, and a power plant 4. Wherein:

the plurality of rotating shafts 2 are arranged in parallel to each other in the first direction F1, and each rotating shaft 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. One specific implementation is as follows: a plurality of bearing blocks are arranged on the first support 1, and two ends of each rotating shaft 2 are respectively connected to the corresponding two bearing blocks.

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 power device 4 is connected with the plurality of rotating shafts 2 through a transmission assembly so as to drive the rotating shafts 2 to rotate around respective axes.

The transmission assembly comprises a reciprocating pull rod 5, a first wheel 6, a second wheel 7, a plurality of third wheels 8, a plurality of fourth wheels 9, a first rope 10, a second rope 11, a plurality of third ropes 12 and a plurality of fourth ropes 13. Wherein:

the drag link 5 is reciprocatingly movable in the first direction F1 by the power unit 4, and the first pulley 6 and the second pulley 7 are rotatably connected to the drag link 5. When the power device 4 drives the reciprocating pull rod 5 to move, the first rotating wheel 6 and the second rotating wheel 7 connected to the reciprocating pull rod 5 move along with the reciprocating pull rod, and accordingly, the related rope is pulled. Specifically, the drag link 5 has first and second ends oppositely disposed in the first direction F1, i.e., left and right ends of the drag link 5 in fig. 3, the first pulley 6 is rotatably connected to the first end of the drag link 5, and the second pulley 7 is rotatably connected to the second end of the drag link 5.

The plurality of third rotating wheels 8 are coaxially fixed to the plurality of rotating shafts 2 in a one-to-one correspondence, respectively, and the plurality of third rotating wheels 8 are arranged in a line at intervals from each other in the first direction F1. For ease of description, the row in which the plurality of third wheels 8 are located will be referred to herein as the first row.

The plurality of fourth runners 9 are also coaxially fixed to the plurality of rotary shafts 2 in a one-to-one correspondence, respectively, and the plurality of fourth runners 9 are also 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 fourth wheels 9 are located is referred to herein as the second row. The second row is parallel to the first row.

The first rope 10 is trained around the first wheel 6, and the first rope 10 comprises a first rope portion 1001 and a second rope portion 1002, which extend from both sides of the first wheel 6 and extend in the forward direction of the first direction F1. It should be noted that "the first rope portion 1001 and the second rope portion 1002 extending from both sides of the first pulley 6 and both extending in the forward direction of the first direction F1" means that the first rope portion 1001 and the second rope portion 1002 belong to downstream rope portions on both sides of the first pulley 6, respectively, there may be another transitional rope portion between the first pulley 6 and the second pulley 1001, and it does not mean that the starting ends of the first rope portion 1001 and the second rope portion 1002 are at the first pulley 6, and it can be understood with reference to fig. 3 to 7 in particular.

The second rope 11 is reeved with the second wheel 7, and the second rope 11 comprises a third rope portion 1101 and a fourth rope portion 1102 which are led out from both sides of the second wheel 7 and extend in the negative direction of the first direction F1. The first and third rope portions 1001, 1101 correspond to the first row, respectively, and the second and fourth rope portions 1002, 1102 correspond to the second row, respectively.

It is understood that the positive and negative directions of the first direction F1 refer to two opposite directions in the first direction F1. Specifically, in fig. 2, the positive direction of the first direction F1 is the rightward direction parallel to the paper, and the negative direction of the first direction F1 is the leftward direction parallel to the paper.

Referring to fig. 2 to 7, the number of the third ropes 12 is twice that of the third pulleys 8, each third pulley 8 corresponds to two third ropes 12, one end of each third rope 12 corresponding to each third pulley 8 surrounds and is fixed to the third pulley 8 in opposite directions, and the other end of each third rope 12 corresponding to each third pulley 8 is fixed to the first rope segment 1001 and the third rope segment 1101.

The above-mentioned "surround and fix to in opposite directions respectively" has the meaning: referring to fig. 3 to 5, for each of the two third ropes 12 corresponding to each of the third pulleys 8, one end of one third rope 12 is wound around and fixed to the corresponding third pulley 8 in a clockwise direction, and one end of the other third rope 12 is wound around and fixed to the third pulley 8 in a counterclockwise direction.

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 the two third ropes 12 is wound around and fixed to the corresponding third pulley 8 in opposite directions, when the first third rope 12 pulls the third pulley 8 to rotate so that the first third rope 12 is unwound from the third pulley 8, the third pulley 8 necessarily winds up the second third rope 12.

The number of fourth ropes 13 is twice as large as the number of fourth wheels 9, each fourth wheel 9 corresponds to two fourth ropes 13, and one end of each of the two fourth ropes 13 corresponding to each fourth wheel 9 is wound around and fixed to the fourth wheel 9 in opposite directions, respectively, and the other end of each of the two fourth ropes 13 corresponding to each fourth wheel 9 is fixed to the second rope segment 1002 and the fourth rope segment 1102, respectively.

Referring to fig. 2 in combination with fig. 1 and fig. 3 to 7, if it is intended to rotate each photovoltaic panel 3 in fig. 1 to a horizontal angle in a clockwise direction around the axis of the rotating shaft 2, the controllable power device 4 drives the reciprocating pull rod 5 to move leftwards in fig. 2, the second pulley 7 connected to the second end of the reciprocating pull rod 5 is rotated to pull the second rope 11 leftwards, and the third rope segment 1101 and the fourth rope segment 1102 of the second rope 11 move rightwards respectively. The third and fourth rope portions 1101 and 1102 moving to the right respectively pull the respective third and fourth pulleys 8 and 9 to rotate clockwise in fig. 2, thereby driving the respective photovoltaic panel 3 to rotate clockwise to a horizontal angle in fig. 1. In this process, the "paid-out amount" of the first rope 10 is substantially equal to the "recovered amount" of the second rope 11. In the process, the rotatable second runner 7 has the function of balancing the tension of the second rope 11 on the third runner 8 and the fourth runner 9, so that the tension of the third runner 8 from the third rope segment 1101 and the tension of the fourth runner 9 from the fourth rope segment 1102 are kept equal, the torsion forces of the rotating shaft 2 from the third runner 8 and the fourth runner 9 are kept consistent, and the obvious torsion deformation of the rotating shaft 2 and the photovoltaic panel 3 on the rotating shaft 2 is prevented.

Similarly, if it is intended to turn each photovoltaic panel 3 in fig. 1 to a more inclined angle in the counterclockwise direction about the axis of the rotating shaft 2, the controllable power device 4 drives the reciprocating pull rod 5 to move to the right in fig. 2, pulling each rotating shaft 2 to turn counterclockwise by the first rope 10. In this process, the "paid-out amount" of the second rope 11 is substantially equal to the "recovered amount" of the first rope 10.

This embodiment is coaxial fixed third runner 8 and the fourth runner 9 that separates each other on every pivot 2, and the during operation, third runner 8 and fourth runner 9 all exert the rotation moment of torsion to pivot 2 under the pulling of relevant rope, have improved the rotation smoothness of pivot 2, have reduced the torsional deformation degree of pivot 2, and then prevent to fix photovoltaic board 3 production deformation on pivot 2. Preferably, the third wheel 8 and the fourth wheel 9 are connected to opposite ends of the shaft 2, respectively.

Referring to fig. 3 in conjunction with fig. 2 and 4 to 7, in the present embodiment, in order to better guide the running direction of the first rope 10 and the second rope 11 to obtain the first rope portion 1001, the second rope portion 1002, the third rope portion 1101 and the fourth rope portion 1102, the transmission assembly further includes a first guide wheel 15, a second guide wheel 16, a third guide wheel 17 and a fourth guide wheel 18 rotatably connected to the first bracket 1. The first guide wheel 15, the second guide wheel 16, the third guide wheel 17 and the fourth guide wheel 18 are distributed in a rectangular shape, and the first guide wheel 15 and the second guide wheel 16 are respectively arranged at two opposite sides of the plurality of third runners 8 along the first direction F1, and the third guide wheel 17 and the fourth guide wheel 18 are respectively arranged at two opposite sides of the plurality of fourth runners 9 along the first direction F1. The first guide wheel 15, the second guide wheel 16, the third guide wheel 17, and the fourth guide wheel 18 are arranged in order in the circumferential direction (rectangular circumference).

One end of the first rope 10 is passed out from the first sheave 6 and passed around the first guide sheave 15 to extend directly in the forward direction of the first direction F1, thereby forming a first rope portion 1001. The other end of the first rope 10 has been reeled out from the first reel 6 and further directly in the positive direction of the first direction F1 around the fourth guide pulley 18, thus forming a second rope portion 1002. One end of the second rope 11 is passed around the second turning wheel 7 and then passed around the second guide pulley 16 to extend directly in the negative direction of the first direction F1, thereby forming a third rope portion 1101. The other end of the second rope 11 has been passed around the second turning wheel 7 and passed around the third guide wheel 17 to run directly in the negative direction of the first direction F1, thus forming a fourth rope portion 1102.

Further, referring to fig. 3 in combination with fig. 2, 4 to 7, the transmission assembly further includes a fifth guide wheel 19, a sixth guide wheel 20, a seventh guide wheel 21 and an eighth guide wheel 22 rotatably connected to the first bracket 1. The fifth guide wheel 19 and the sixth guide wheel 20 are located between the first guide wheel 15 and the fourth guide wheel 18. The seventh guide wheel 21 and the eighth guide wheel 22 are located between the second guide wheel 16 and the third guide wheel 17. The first guide wheel 15, the second guide wheel 16, the third guide wheel 17, the fourth guide wheel 18, the fifth guide wheel 19, the sixth guide wheel 20, the seventh guide wheel 21, and the eighth guide wheel 22 are symmetrical with respect to a first plane, which is a plane parallel to the first direction F1 and perpendicular to the rotation shaft 2. One end of the first rope 10 is passed around the fifth sheave 19 and the first sheave 15 in order after being passed out from the first sheave 6, and the other end of the first rope portion 1001 is passed around the sixth sheave 20 and the fourth sheave 18 in order after being passed out from the first sheave 6. One end of the second rope 11 is wound around the seventh guide pulley 21 and the second guide pulley 16 in this order after being wound off the second reel 7, and the other end of the second rope 11 is wound around the eighth guide pulley 22 and the third guide pulley 17 in this order after being wound off the second reel 7.

The positions of the guide wheels and the directions of the corresponding ropes are configured in the mode, so that the synchronism of the retraction of the first rope 10 and the retraction of the second rope 11 is improved, and the excessive tension of the ropes is prevented.

Fig. 8 is a schematic partial structure diagram of another photovoltaic system, which further improves the retraction synchronization of the first rope 10 and the second rope 11 in a more optimized manner: the fifth guide wheel 19 and the sixth guide wheel 20 are arranged at a small distance along the extension direction of the rotation shaft 2, correspondingly, the seventh guide wheel 21 and the eighth guide wheel 22 are arranged at a small distance along the extension direction of the rotation shaft 2, and thus the first rope 10 between the first pulley 6 and the fifth guide wheel 19 is arranged to extend along the first direction F1, the first rope 10 between the first pulley 6 and the sixth guide wheel 20 is arranged to extend along the first direction F1, the second rope 11 between the second pulley 7 and the seventh guide wheel 21 is arranged to extend along the first direction F1, and the first rope 10 between the second pulley 7 and the eighth guide wheel is arranged to extend along the first direction F1.

The reciprocating pull rod 5 is a screw rod extending along the first direction F1, the power device 4 is a motor, the screw rod is driven to reciprocate along the first direction F1 through the operation of the motor, and then each photovoltaic panel 3 is pulled to rotate through a rope so as to adjust the light-receiving angle. Specifically, a screw base 14 is fixed to the first bracket 1, a screw nut, not shown in fig. 3 because it is hidden, is rotatably coupled to the screw base 14, and the screw nut is screw-coupled to the screw, and a motor as the power unit 4 is fixed to the screw base 14 and is coupled to the aforementioned screw nut to drive the screw nut to rotate, and the screw is moved in the first direction F1 by the rotating screw nut. The spindle base 14 and the spindle nut are components of a transmission assembly.

Referring again to fig. 3-7, the transmission assembly further includes a plurality of ninth guide wheels 23 and a plurality of tenth guide wheels 24. The plurality of ninth guide wheels 23 are arranged in a third row in the first direction F1, and the plurality of ninth guide wheels 23 respectively correspond one-to-one to the plurality of third runners 8. The tenth guide wheels 24 are arranged in a fourth row along the first direction F1, and the tenth guide wheels 24 are in one-to-one correspondence with the fourth turning wheels 9, respectively. The third row is parallel to the first row and both define a third plane. The fourth row is parallel to the second row and both define a fourth plane. The third plane and the fourth plane are both perpendicular to the rotation axis 2.

One end of each of the two third ropes 12 corresponding to each of the third turning wheels 8 passes by the corresponding ninth guide wheel 23 in the opposite direction, and then is wound by and fixed to the third turning wheel 8 in the opposite direction, and one end of each of the two fourth ropes 13 corresponding to each of the fourth turning wheels 9 passes by the corresponding tenth guide wheel 24 in the opposite direction, and then is wound by and fixed to the corresponding fourth turning wheel 9 in the opposite direction. Furthermore, the two third ropes 12 corresponding to each third pulley 8 are arranged crosswise in an X-shape between the third pulley 8 and the corresponding ninth guide pulley 23, and the two fourth ropes 13 corresponding to each fourth pulley 9 are arranged crosswise in an X-shape between the fourth pulley 9 and the corresponding tenth guide pulley 24.

The above-mentioned "opposite direction" means that one of the two directions is clockwise direction and the other is counterclockwise direction. Referring to fig. 3 in conjunction with fig. 4 and 5, for each of the two third ropes 12 of the third turning wheel 8 in fig. 3, the right end of the first third rope 12 passes around a ninth guiding wheel 23 in the counterclockwise direction, and the left end of the second third rope 12 passes around the ninth guiding wheel 23 in the clockwise direction; the right end of the first third rope 12 passes around the ninth guide wheel 23 and then is clockwise wound around and fixed to the third rotating wheel 8, and the left end of the second third rope 12 passes around the ninth guide wheel 23 and then is counterclockwise wound around and fixed to the third rotating wheel 8.

Each ninth guide wheel 23 and tenth guide wheel 24 guides the run of two rope portions, respectively, and the radial forces exerted by these two rope portions on the guide wheels are opposite and have a counteracting effect, thereby improving the smoothness of rotation of the ninth guide wheel 23 and tenth guide wheel 24. 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.

The two third ropes 12 for each third wheel 8 are two ropes independent of each other and not directly connected. As mentioned above, one end of each of the two third ropes 12 corresponding to each of the third pulleys 8 is fixed to the third pulley 8, respectively, so that the two third ropes 12 corresponding to each of the third pulleys 8 are indirectly fixedly connected by the third pulley 8. It should be noted that the two third ropes 12 corresponding to each third wheel 8 may also be directly connected without the aid of the third wheel 8 to form a long rope, and then the non-end position of the long rope is locked to the third wheel 8 by means of a fastener. In this way, the protection scope of the present application does not exclude the situation in which, in contrast, the two third ropes 12 are each wound in opposite directions and fixed to a respective one of the third pulleys 8. The details are described in the following example two.

Similarly, the two fourth ropes 13 corresponding to each fourth wheel 9 can also adopt the similar structure.

As mentioned above, the "wrapping" of the third and fourth ropes 12, 13 around the third and fourth wheels 8, 9 may be either full or non-full. However, if each third rope 12 and fourth rope 13 is wound around the corresponding third wheel 8 and fourth wheel 9 for a whole circumference (greater than 360 °), there will be the drawback that:

under the power of the power device 4, the rope may pull the third rotating wheel 8 and the fourth rotating wheel 9 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 system, but also increases the overall cost of the photovoltaic system.

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: the sum of the angles of the two third ropes 12 for each third wheel 8 around the third wheel 8 is less than 360 degrees and the sum of the angles of the two fourth ropes 13 for each fourth wheel 9 around the fourth wheel 9 is less than 360 degrees.

When one of the third ropes 12 pulls the corresponding third pulley 8 to rotate, the rope portion is unwound from the third pulley 8, and its winding angle on the third pulley 8 gradually decreases. After the third rope 12 is unwound until the end of the third rope 12 is straightened and the direction of the pulling force on the third wheel 8 passes through the rotation axis of the third wheel 8, the pulling force of the third rope 12 on the third wheel 8 does not generate a rotation moment, no matter how much pulling force is applied to the third wheel 8 by the third rope 12 at this time, the third wheel 8 does not continue to rotate due to the pulling force, and the unwinding angle of the third wheel 8 is about the original surrounding angle. Similarly, the unwinding angle of another third rope 12 corresponding to and adjacent to the third rope 12 has the same characteristic. Therefore, if the sum of the angles of the two third ropes 12 corresponding to each third wheel 8 around the third wheel 8 is less than 360 degrees, and the sum of the angles of the two fourth ropes 13 corresponding to each fourth wheel 9 around the fourth wheel 9 is less than 360 degrees, it can be ensured that the angles of rotation of each third wheel 8 and each fourth wheel 9 are generally less than 360 degrees, and the angle of rotation of the photovoltaic panel 3 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, the photovoltaic system may also be 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 2 lines of rotation of mutually perpendicular's rotation axis, 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.

In the present embodiment, the first rope 10, the second rope 11, the third rope 12, and the fourth rope 13 are all steel wires.

It should be noted that the first cord segment 1001, the second cord segment 1002, the third cord segment 1101, and the fourth cord segment 1102 may be replaced by a guide rod that is not easily bent and deformed, such as a metal rod. For example, in another embodiment, the two ends of the first rope 10 are respectively led out from the two sides of the first wheel 6 and respectively connected with the first pull rod and the second pull rod extending along the first direction F1, and the two ends of the second rope 11 are respectively led out from the two sides of the second wheel and respectively connected with the third pull rod and the fourth pull rod extending along the first direction F1. The positions and functions of the first pull rod, the second pull rod, the third pull rod and the fourth pull rod are respectively the same as those of the first rope section 1001, the second rope section 1002, the third rope section 1101 and the fourth rope section 1102, and can be understood by referring to the above description, which is not described herein again.

It can be understood that the first string section 1001, the second string section 1002, the third string section 1101 and the fourth string section 1102, which are relatively soft, are replaced by guide rods that are not easily bent and deformed, so as to ensure that the "other end" of each third string 12 and fourth string 13 has a very stable relative position on the corresponding guide rods, which is more beneficial to promote the rotation synchronism of each photovoltaic panel 3.

Fig. 9 to 15 show a partial structure of another photovoltaic system having substantially the same structure as that of the photovoltaic system in the first embodiment, which can be understood with reference to the description of the first embodiment. In the following, the differences of the photovoltaic system from the photovoltaic system of fig. 1 to 7 are described with emphasis.

Referring to fig. 11, the lead screw includes a first rod segment 501, a first elastic element 508, a second rod segment 502, a third rod segment 503, a fourth rod segment 504, a fifth rod segment 505, a sixth rod segment 506, a second elastic element 509, and a seventh rod segment 507, which are sequentially connected along a first direction F1. Two ends of the third rod section 503 are respectively in threaded connection with the second rod section 502 and the fourth rod section 504, and therefore the distance between the second rod section 502 and the fourth rod section 504 is adjusted by rotating the third rod section 503, and further the tension of the third rope section 1101 is adjusted. The two ends of the fifth rod section 505 are respectively in threaded connection with the fourth rod section 504 and the sixth rod section 506, and therefore the distance between the fourth rod section 504 and the sixth rod section 506 is adjusted by rotating the fifth rod section 505, and further the tension of the fourth rope section 1102 is adjusted. The spindle nut is in particular in threaded connection with the fourth rod section 504 of the spindle. In the present embodiment, the first elastic element 508 and the second elastic element 509 are both springs extending along the first direction F1.

It can be understood that, the lead screw adopts the structure, can guarantee that the first rope 10 and the second rope 11 have enough large dischargeable amount during the work, and prevent the tensile stress that the first rope 10 and the second rope 11 receive during the work from being too large.

In addition, referring to fig. 12 to 15, two third ropes 12 corresponding to each third pulley 8 are integrally connected to form a long rope, and for convenience of description, the long rope is referred to as a fifth rope, the fifth rope is divided into two rope segments virtually by the third pulley 8 as a partition, the two rope segments respectively correspond to the third rope 12, the fifth rope is connected with the third pulley 8 in a winding manner, and the non-end position of the fifth rope is fixed on the third pulley 8. Specifically, a clamping groove 801 is formed in the third rotating wheel 8, a clamping block 25 is fixedly arranged on the fifth rope (i.e., the two integrally connected third ropes 12), and the clamping block 25 is clamped in the clamping groove 801, so that the fifth rope and the third rotating wheel 8 are fixedly connected. Preferably, in order to prevent the block 25 from being separated from the slot 28, a screw for locking the block 25 on the third rotating wheel 8 is also provided. The first end and the second end of the fifth rope (i.e. the left end and the right end of the fifth rope in fig. 14) are led out from the two sides of the third turning wheel 8 respectively, then pass around the ninth guide wheel 23 in opposite directions, and are fixed to the first rope segment 1001 and the third rope segment 1101 respectively, thereby realizing the connection of the two ends of the fifth rope with the power equipment 4.

As can be seen from the above, the first and third rope portions 1001 and 1101 connected to both ends of the fifth rope extend along the first direction F1, and the power device is configured to: pulling the first cord segment 1001 in a negative direction of the first direction F1 and pulling the third cord segment 1101 in a positive direction of the first direction F1. To avoid that the first rope portion 1001 and the third rope portion 1101 are bent greatly during the operation and thus the rotation synchronism of each photovoltaic panel 3 is affected too much, referring to fig. 13 and 14 in combination with fig. 3 to 5, a first end (left end in fig. 14) of the fifth rope is led out from the third pulley 8 and then extends in a negative direction of a first direction F1, and a second end (right end in fig. 14) of the fifth rope is led out from the third pulley 8 and then extends in a positive direction of a first direction F1, wherein the first direction F1 is a straight direction.

The two fourth ropes 13 corresponding to each fourth wheel 9 are also designed similarly, and are not described in detail herein.

Referring to fig. 13 and 14, in the present embodiment, the two ends of the fifth rope corresponding to each third turning wheel 8 are fixed to the first rope portion 1001 and the third rope portion 1101:

a first end of a fifth rope is fixed to the first rope segment 1001 by means of a first connector 26 and a second end of the fifth rope is fixed to the third rope segment 1101 by means of a second connector 27. The first connector 26 includes a first body 2601 secured with the first cord segment 1001 and a second body 2602 secured with a first end of a fifth cord. The first body 2601 includes a first through hole 2601a extending in the first direction F1, the second body 2602 includes a first screw 2602a extending in the forward direction of the first direction F1, and the first screw 2602a movably penetrates the first through hole 2601a and is threadedly coupled with the first nut 2603. The second connector 27 includes a third body 2701 fixed with the third cord segment 1101 and a fourth body 2702 fixed with the second end of the fifth cord. The third body 2701 includes a second through hole 2701a extending in the first direction F1, and the fourth body 2702 includes a second screw 2702a protruding in the negative direction of the first direction F1, and the second screw 2702a is movably inserted through the second through hole 2701a and is threadedly coupled to the second nut 2703.

Further, referring to fig. 14 again, the first body 2601 further includes a third through hole 2601b sleeved outside the first rope segment 1001 and welded to the first rope segment 1001, and the second body 2601 further includes a fourth through hole 2701b sleeved outside the third rope segment 1101 and welded to the third rope segment 1101. During installation, the first string 1001 may be inserted into the third through hole 2601b of the first body 2601, and then welded.

In order to prevent the fifth rope from being separated from the third rotating wheel 8 during operation, a ring groove 802 directly communicating with the clamping groove 801 is provided on the peripheral side of the third rotating wheel 8 in fig. 14, and the fifth rope is wound around the ring groove 802.

The two fourth ropes 13 corresponding to each fourth wheel 9 are fixed to the second rope portion 1002 and the fourth rope portion 1102 in a similar structure, which is not described in detail herein.

In another embodiment, referring to fig. 15-17, the first body 2601 includes a first chamber 2601c for accommodating the second body 2602, and the third body 2701 includes a second chamber 2701c for accommodating the fourth body 2702. The second body 2602 further includes a first caulking groove 2602b and a first guide hole 2602c, and the first end of the fifth rope is provided with a first caulking head 1201 detachably fitted in the first caulking groove 2602 b. The fourth body 2702 further includes a second insertion groove 2702b and a second guide hole 2702c, and a second end of the fifth rope is provided with a second insertion head 1202 detachably engaged in the second insertion groove 2702 b. Therefore, the convenience of dismounting the fifth rope from the first rope section and the third rope section is further improved. The first rope segment 1001 passes through the first guiding hole 2602c, and the second body 2602 can slide along the length direction of the first rope segment 1001. The third rope segment 1101 passes through the second guiding hole 2702c, and the fourth body 2702 can slide along the length direction of the second rope segment 1101.

After assembly, the second body 2602 is positioned in the first cavity 2601c, and the cavity wall of the first cavity 2601 blocks (prevents) the first tab 1201 from disengaging from the first slot 2602 b. The fourth body 2702 is located in the second cavity 2701c, and the cavity wall of the second cavity 2701c blocks the second insert head 1202 from being detached from the second insert groove 2702 b.

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

Claims (10)

1. A rotary transmission structure of a photovoltaic panel comprises at least one transmission unit, and is characterized in that each transmission unit comprises a rotating shaft, a third rotating wheel, a ninth guide wheel and a fifth rope, wherein the rotating shaft is used for supporting the photovoltaic panel to drive the photovoltaic panel to rotate along with the rotating shaft, the third rotating wheel is coaxially fixed with the rotating shaft, and a clamping groove is formed in the third rotating wheel; the fifth rope is in winding connection with the third rotating wheel, a clamping block clamped in the clamping groove is fixed on the fifth rope, and a first end and a second end of the fifth rope are respectively led out from two sides of the third rotating wheel, then pass through the ninth guide wheel in opposite directions and are connected to power equipment.

2. The rotation transmission structure of a photovoltaic panel, according to claim 1, wherein the first end of the fifth rope is extended from the third wheel in a negative direction of the first direction, and the second end of the fifth rope is extended from the third wheel in a positive direction of the first direction, wherein the first direction is a linear direction.

3. The rotary drive structure of a photovoltaic panel of claim 2, further comprising a first cord having a first cord segment projecting in a positive direction of the first direction and a second cord having a third cord segment projecting in a negative direction of the first direction connected to the power plant, the power plant configured to: pulling the first rope segment to move along the negative direction of the first direction, and pulling the third rope segment to move along the positive direction of the first direction;

the transmission units are plural, the first end of each of the fifth ropes in the plural transmission units is fixed to the first rope segment by a first connector, and the second end of each of the fifth ropes in the plural transmission units is fixed to the third rope segment by a second connector.

4. The rotation transmission structure of a photovoltaic panel according to claim 3,

the first connector comprises a first body fixed with the first rope section and a second body fixed with the first end, the first body comprises a first through hole extending along the first direction, the second body comprises a first screw rod extending along the forward direction of the first direction, and the first screw rod movably penetrates through the first through hole and is in threaded connection with a first nut;

the second connector comprises a third body fixed with the third rope section and a fourth body fixed with the second end, the third body comprises a second through hole extending along the first direction, the fourth body comprises a second screw extending along the negative direction of the first direction, and the second screw movably penetrates through the second through hole and is in threaded connection with a second nut.

5. The rotation transmission structure of a photovoltaic panel according to claim 4,

the first body comprises a third through hole which is sleeved outside the first rope section and is fixedly welded with the first rope section, the second body comprises a first caulking groove, and the first end of the fifth rope is provided with a first caulking head which is detachably clamped and embedded in the first caulking groove;

the third body comprises a fourth through hole which is sleeved outside the third rope section and is fixedly welded with the third rope section, the fourth body comprises a second caulking groove, and the second end of the fifth rope is provided with a second caulking head which is detachably clamped and embedded in the second caulking groove.

6. The rotation transmission structure of a photovoltaic panel, according to claim 5, characterized in that said first body comprises a first chamber housing said second body, the wall of said first chamber blocking the disengagement of said first rabbet from said first rabbet; the third body comprises a second chamber for accommodating the fourth body, and the cavity wall of the second chamber blocks the second embedded head from being separated from the second embedded groove; the second body comprises a first guide hole, the fourth body comprises a second guide hole, the first rope segment movably penetrates through the first guide hole, and the third rope segment movably penetrates through the second guide hole.

7. The rotation transmission structure of a photovoltaic panel according to claim 2,

the rotary drive structure further includes a first pull rod and a third pull rod connected to the power plant, the first pull rod and the third pull rod each extending along the first direction, the power plant configured to: the first pull rod is pulled to move along the negative direction of the first direction, and the third pull rod is pulled to move along the positive direction of the first direction;

the transmission unit is in a plurality, the first end of each of the fifth ropes in the plurality of transmission units is fixed to the first pull rod, and the second end of each of the fifth ropes in the plurality of transmission units is fixed to the third pull rod.

8. The rotation transmission structure of a photovoltaic panel, according to claim 1, wherein the angle of the fifth rope around the third pulley is less than 360 degrees.

9. The rotation transmission structure of a photovoltaic panel as claimed in claim 1, wherein a ring groove directly communicating with the slot is disposed around the third pulley, and the fifth rope is wound around the ring groove.

10. The rotation transmission structure of a photovoltaic panel, according to claim 1, wherein the rotation shaft and the ninth directive wheel are rotatably mounted on the first support.

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