CN215646698U - East-west axis sun-tracking photovoltaic support - Google Patents

Abstract

The utility model provides a east-west axis sun-tracking photovoltaic support. Wherein the main beam is hinged to the north side of the strut, and the tracking driving device and the plurality of damping devices are respectively supported by the corresponding strut on the south side of the strut. In the tracking driving device, the north end of the switching arm is connected with a main beam, the driving rod linearly stretches relative to the driving seat under the driving action, and the main beam is driven to rotate around the shaft through the switching arm, so that the photovoltaic module is driven to track the sun. In the damping device, the damping rod can be linearly and telescopically arranged on the damping seat, wherein the damping seat provides damping force for linearly extending and retracting the damping rod, the north end of the connecting arm is connected with the main beam, the first side is hinged with the south end of the connecting arm in the damping rod and the damping seat, and the second side is hinged with the position, below the main beam, of the corresponding support. Above-mentioned east-west axle chases after a day and trails photovoltaic support, can realize stable real-time chasing after a day and trail, is applicable to east-west axle photovoltaic support's the working condition of tracking the rotation towards south.

Description

East-west axis sun-tracking photovoltaic support

Technical Field

The utility model relates to a east-west axis sun-tracking photovoltaic support.

Background

The east-west axis photovoltaic bracket is a photovoltaic array bracket commonly used in a photovoltaic power generation system. When the east-west axis photovoltaic support is used, the inclination angle of the east-west axis photovoltaic support is required to be manually adjusted once after a period of time according to the altitude change rule of the local sun all the year round, so that the installation inclination angle of the photovoltaic component supported on the east-west axis photovoltaic support is changed, the light receiving surface of the east-west axis photovoltaic support can face the sun in the posture of the inclination angle as large as possible according to the radiant quantity, and the total power generation quantity accumulated in the middle of a year is improved.

The inventor analyzes and considers that the regular adjustment of the east-west axis photovoltaic support generally needs a great amount of manpower to complete, the labor cost is high, the operation and maintenance workload is large, and the actual operation and adjustment are very inconvenient, so that the east-west axis photovoltaic support capable of realizing sun tracking by itself is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a east-west axis sun-tracking photovoltaic support, which can realize stable real-time sun-tracking.

Another object of the present invention is to provide a east-west axis sun-tracking photovoltaic support, which can be applied to the working condition of south-facing tracking rotation of the east-west axis photovoltaic support.

The utility model provides an east-west axis sun-tracking photovoltaic support which comprises a main beam extending along the east-west direction and a plurality of supporting columns distributed along the east-west direction, and further comprises a tracking driving device and a plurality of damping devices, wherein the main beam is hinged to the north sides of the supporting columns, and the tracking driving device and the damping devices are respectively supported by the corresponding supporting columns on the south sides of the supporting columns. Among the tracking drive device, drive unit includes drive seat and actuating lever, and the switching arm extends along north-south, and the north end is connected the girder, the free end of actuating lever with first party in the drive seat with the south end of switching arm is articulated, the free end of actuating lever with second party in the drive seat articulates to being located of corresponding pillar the position below the girder, the actuating lever sets up to stretch out and draw back for the drive seat straight line under the drive effect, through the switching arm drives the girder pivoting, borrows this drive photovoltaic module that supports on the girder chases after the sun and tracks. Among the damping device, the damping unit includes damping seat and damping rod, the damping rod can set up in with stretching out and drawing back the damping seat in the straight line, wherein, the damping seat provides the flexible damping force of damping rod straight line, and the linking arm extends to north and south along, and north end is connected the girder, the free end of damping rod with first party in the damping seat with the south end of linking arm is articulated, the free end of damping rod with second party in the damping seat articulates and is located of corresponding pillar the position of girder below. The main beam is hinged to the upper end of the corresponding support column through the switching arm and/or the connecting arm, so that the center of gravity of a tracking rotating part in the east-west axis sun-tracking photovoltaic support is consistent with the center of a hinge shaft of the main beam, and the tracking rotating part comprises the main beam and a part which rotates along with the main beam in a tracking mode.

In one embodiment, only one tracking driving device is contained in the east-west axis solar tracking photovoltaic support.

In one embodiment, two struts located outermost in the east-west direction support two damping devices of the plurality of damping devices, respectively.

In one embodiment, the plurality of damping means are symmetrically distributed in the east-west direction with respect to the one tracking drive means.

In one embodiment, the free end of the driving rod is hinged to the south end of the transfer arm, and the driving seat is hinged to the corresponding pillar through the bottom.

In one embodiment, the main beam supports a plurality of purlins distributed along the east-west direction, the photovoltaic module is supported on the purlins, and the north end of the transfer arm and/or the connecting arm is connected to the position, between two adjacent purlins, of the main beam.

In one embodiment, in the purlin, a bar body extends in the north-south direction, is supported above the main beam and is used for supporting the photovoltaic module, a purlin support extends in the north-south direction and supports the main beam, two inclined supports are located on two sides of the main beam in the north-south direction, and two ends of the purlin support are connected with the bar body respectively.

In one embodiment, the transfer arm and/or the connecting arm are connected above the main beam. The main beam is hinged to the upper end of a support column which is not provided with the tracking driving device and the damping device through a connector connected above the main beam.

In one embodiment, the main beam abuts a surface of the pillar on a north side in a state where the installation inclination angle of the photovoltaic module is zero.

In the above-mentioned east west axle chases after a day and trails along photovoltaic support, the actuating lever is flexible for the drive seat straight line under the drive effect, can drive the girder pivoting through the switching arm, borrow this to drive photovoltaic module and pursue a day and trail, simultaneously, the damping force that the damping seat provided is transmitted for tracking the rotating part via the damping lever, even when meetting the gust of wind, also can stably keep girder and photovoltaic module in fixed installation inclination to realize stable real-time tracking of chasing after a day. The main beam, the tracking driving device and the damping device are respectively supported on the south side and the north side of the support column, the main beam is hinged to the upper end of the support column, the tracking rotating part formed by the main beam, the photovoltaic assembly and the like can conveniently track and rotate towards the south, a balance support is formed, the stroke of the driving rod and the damping rod is short, and the tracking driving device is particularly suitable for the working condition of the photovoltaic support frame of the east-west axis that the photovoltaic support frame tracks and rotates towards the south. Furthermore, the main beam is hinged to the corresponding support column through the transfer arm and/or the connecting arm, the transfer arm and the connecting arm not only serve as a linkage device of the tracking driving device, the damping device and the main beam, but also can play a role in hinging the main beam to the support column, and parts can be saved. The whole east-west axis sun-tracking photovoltaic support can be more compact in structure and lower in cost.

In the above-mentioned east west axle chases after a day and trails photovoltaic support, further set up only one and trail drive arrangement, cooperate a plurality of damping device, the control that can be convenient for track in real time.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

fig. 1 is a schematic diagram illustrating an exemplary east-west hub tracking photovoltaic mount when viewed from the south side.

Fig. 2 and 3 are schematic views showing exemplary tracking driving devices in a horizontal state and an inclined state, respectively, as viewed from the west side.

Fig. 4 and 5 are schematic views showing an exemplary damping device in a horizontal state and an inclined state, respectively, as viewed from the west side.

Fig. 6 and 7 are schematic views showing the attachment of an exemplary main beam to a post in a horizontal state and an inclined state, respectively, as viewed from the west side.

Fig. 8A and 8B are schematic views of an exemplary purlin as viewed from the west side and north side, respectively.

Fig. 9A and 9B are schematic views of another example purlin viewed from the west side and north side, respectively.

Fig. 10A is a schematic view of an exemplary interposer, fig. 10B is a schematic view of an exemplary tray, and fig. 10C is a schematic view illustrating the exemplary interposer of fig. 10A mated with another exemplary tray.

Fig. 11A is a sectional view showing an exemplary transfer arm when viewed from the west side, and fig. 11B is a schematic view showing the exemplary transfer arm when viewed from the south side.

Fig. 12A and 12B are another schematic view showing the attachment of an exemplary main beam to a column in a horizontal state and an inclined state, respectively, as viewed from the west side.

Fig. 13A and 13B are schematic views showing another exemplary main beam connection to a strut in a horizontal state and an inclined state, respectively, as viewed from the west side.

Detailed Description

The present invention will be further described with reference to the following detailed description and the accompanying drawings, wherein the following description sets forth further details for the purpose of providing a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms other than those described herein, and it will be readily apparent to those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit or scope of the utility model.

For example, a first feature described later in the specification may be formed over or on a second feature, and may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

An exemplary configuration of a east-west hub tracking photovoltaic mount 10 provided by the present invention can be seen in fig. 1-7. Fig. 1 is a south side view of an east-west sun tracking photovoltaic mount 10 looking from the south side to the north side. As shown in fig. 1, the east-west solar tracking photovoltaic support 10 includes a main beam 1 extending in the east-west direction and a plurality of struts 2 distributed in the east-west direction. The east-west axis solar tracking photovoltaic support 10 further comprises a tracking driving device 3 and a plurality of damping devices 4. It is to be understood that the term "plurality" means more than two, including two, three, four or five, etc. It is also to be understood that "along" a direction herein does not require strict agreement in the mathematical sense, but means that there is a component in that direction, preferably an angle of less than 45 ° to that direction, and even more preferably an angle of less than 20 ° or even 10 ° to that direction.

The main beam 1 supports a photovoltaic module 20 thereon. It will be appreciated that the photovoltaic modules 20 may not be supported directly on the main beams 1 in the figures, but rather by purlins 5 as will be described in more detail below. The main beam 1 may be, for example, a square tube, a circular tube, or a polygonal (such as a regular hexagon) tube, that is, the main beam 1 may take various cross-sectional forms such as a square, a circle, a polygon, and the like.

Fig. 2 and 3 exemplarily show a sectional configuration of a partial structure when viewed from the west side toward the east side of the strut 2a, in which other portions of the adjacent strut 2b to the east side on the east side of the strut 2a are omitted. Fig. 4 and 5 exemplarily show a sectional configuration of a partial structure when viewed from the west side toward the east side of the stay 2 d. Fig. 6 and 7 exemplarily show a sectional configuration of a partial structure when viewed from the west side toward the east side of the strut 2c, in which the other portion of the adjacent strut 2d to the east side of the strut 2c is omitted. Among them, fig. 2, 4 and 6 show a horizontal state in which the installation inclination angle θ of the photovoltaic module 20 is zero, and fig. 3, 5 and 7 show an inclined state in which the installation inclination angle θ of the photovoltaic module 20 is non-zero. It is understood that the pillars 2 may be collectively referred to as pillars 2 when they are not described differently, and may be referred to as pillars 2a, 2b, 2c, 2d, etc. when they are described differently. It is to be understood that the orientation description herein is generally described with reference to the horizontal state shown in fig. 2, 4 and 6, unless otherwise specified. It is also to be understood that the drawings are designed solely for purposes of illustration and not necessarily as a definition of the limits of the utility model, for which reference should be made to the appended drawings.

Referring to fig. 2 to 7, the main girder 1 is hinged to the north side of the plurality of columns 2. The tracking drive device 3 and the plurality of damper devices 4 are supported on the south side of the plurality of support columns 2 by the corresponding support column 2, respectively. In the illustrated embodiment, each of the tracking drive means 3 and the damping means 4 may be supported by one strut 2, so that there are more than two damping means 4 and more than three struts 2.

With reference to fig. 1, 2 and 3, the tracking drive device 3 includes a drive unit 31 and an adapter arm 32. The driving unit 31 includes a driving socket 33 and a driving rod 34.

The transfer arm 32 extends in the north-south direction. The north end 321 of the transfer arm 32 is attached to the main beam 1. The first one of the free end 341 of the driving rod 34 and the driving seat 33 is hinged to the south end 322 of the transit arm 32, and the second one of the free end 341 of the driving rod 34 and the driving seat 33 is hinged to a position a3 of the corresponding post 2a below the main beam 1. In the illustrated embodiment, the first direction is the free end 341 of the driving rod 34, that is, the free end 341 of the driving rod 34 is hinged to the south end 322 of the adapter arm 32, and the driving seat 33 is hinged to the corresponding pillar 2a through the bottom 331, so that the heavier driving seat 33 is located at the lower side, and the structure is more stable. It is to be understood that the terms "first", "second", etc. are used herein to define features only for the purpose of distinguishing between corresponding features, and are not intended to limit the scope of the present invention unless otherwise claimed.

The driving rod 34 is arranged to linearly extend and retract relative to the driving seat 33 under the driving action, and the main beam 1 is driven to rotate around the shaft through the transfer arm 32, so that the photovoltaic module 20 supported on the main beam 1 is driven to track the sun. In other words, under the driving action, the driving rod 34 extends and retracts along the rod length direction thereof relative to the driving seat 33, so as to pull or push the south end 322 of the transfer arm 32, and therefore the north end 321 of the transfer arm 32 with the main beam 1 and the photovoltaic module 20 supported by the main beam 1 fixedly connected thereto rotates around the hinge axis center X1 (hinge axis) between the main beam 1 and the pillar 2, particularly rotates towards the south side from the horizontal state of fig. 2, so that an arbitrary inclination state where the installation inclination angle θ is nonzero can be reached, and finally, an extreme inclination state where the installation inclination angle θ is smaller than 90 ° (for example, the installation inclination angle θ is 70 °) in fig. 3 can be reached, thereby realizing the real-time tracking of the east-west axis-tracking photovoltaic support 10 to the sun in the south direction. In one embodiment, the driving unit 31 of the tracking driving device 3 may be an electric push rod, and the driving seat 33 and the driving rod 34 are respectively an electric cylinder and a push rod of the electric push rod.

With reference to fig. 1, 4 and 5, the damping device 4 includes a damping unit 41 and a connecting arm 42. The damping device 4 may also be referred to as a damping shock absorber.

The damping unit 41 includes a damping mount 43 and a damping rod 44. The damping rod 44 is linearly telescopically disposed to the damping mount 43, wherein the damping mount 43 provides a damping force of the damping rod 44 linearly telescopically. In one embodiment, the damping unit 41 may be a hydraulic damper, and the damping mount 43 and the damping rod 44 are a hydraulic cylinder and a hydraulic rod of the hydraulic damper, respectively.

The connecting arms 42 extend in the north-south direction. The north end 421 of the connecting arm 42 is connected with the main beam 1, the first one of the free end 441 of the damping rod 44 and the damping seat 43 is hinged with the south end 422 of the connecting arm 42, and the second one of the free end 441 of the damping rod 44 and the damping seat 43 is hinged with the position A4 of the corresponding pillar 2d below the main beam 1. In the illustrated embodiment, the first one is the damping mount 43, i.e. the top 431 of the damping mount 43 is hinged to the south end 422 of the connecting arm 42, while the damping rod 44 is hinged to the corresponding strut 2d by the free end 441.

The main beam 1 can be hinged to the upper end of the corresponding post 2a by means of a swivel arm 32. Similarly, the main beam 1 can also be hinged to the upper end of the corresponding post 2b, 2d by means of a connecting arm 42. That is, the main beam 1 may be hinged to the upper end of the post 2 by the swivel arm 32 and/or the connecting arm 42. Thereby, in the east-west axis sun-tracking photovoltaic module 10, the center of gravity of the tracking rotation part can be coincident with the hinge axis center X1 of the main beam 1. The tracking rotation part is composed of a main beam 1 and a part which rotates along with the main beam 1, and may include, for example, the aforementioned photovoltaic module 20, and may further include a purlin 5 and the like which will be described below. It should be understood that, here, the hinge axis center X1 of the main beam 1 is a straight line, and the center of gravity of the tracking rotating portion is a point, and the point coinciding with the straight line means that the point is on the straight line. It is also to be understood that the center of gravity of the tracking turning part coincides with the hinge axis center X1, and it is not required to be completely coincident or coincident in a mathematical sense, but means close to coincident or coincident, that is, some error may be allowed, for example, the shortest distance between the center of gravity of the tracking turning part and the hinge axis center X1 of the main beam 1 may be allowed to be within 5 cm. The main beam 1 is hinged to the upper end of the column 2 by the joint arm 32 and/or the connecting arm 42 so that the center of gravity of the tracking rotating portion coincides with the hinge axis center X1 of the main beam 1, and balanced support or quasi-balanced support can be achieved. In the above-mentioned photovoltaic support 10 is trailed in the east-west axle pursuit day, through the drive effect, can make the actuating lever 34 of pursuit drive arrangement 3 flexible, realize tracking of photovoltaic module 20 pursuit day, and simultaneously, damping lever 44 of damping device 4 then can provide the damping force, realize the stable support of tracking in-process, girder 1 and pursuit drive arrangement 3, damping device 4 arranges respectively in the south of pillar 2, north both sides, not only realize the southward tracking pivoted balanced support, still make compact structure, the stroke of actuating lever 34 and damping lever 44 all can be shorter, the device is miniaturized, it is light-dutyized, be particularly useful for tracking of the southward pursuit day of the east-west axle pursuit day photovoltaic support.

In the illustrated embodiment, only one tracking driving device 3 may be included in the east-west tracking photovoltaic support 10. Further preferably, only the one tracking drive means 3 may be arranged or mounted on the most central one 2a of the plurality of pillars 2 distributed in the east-west direction, i.e., supported by the most central pillar 2 a. Compared with a plurality of tracking driving devices, only one tracking driving device 3 is adopted for tracking driving, complex linkage mechanisms are not needed to be arranged, cost is saved, and control is facilitated.

In the illustrated embodiment, two struts 2d located outermost in the east-west direction (only one strut 2d located most east is indicated in fig. 1) may support two damping devices 4 of the plurality of damping devices 4, respectively. In other words, two damping devices 4 among the plurality of damping devices 4 are respectively arranged on the two most east and most west struts 2d, which can effectively prevent the stent from shaking when encountering wind gusts, so that the stent is always kept in the correct posture.

In the illustrated embodiment, a plurality of damping devices 4 may be symmetrically distributed in the east-west direction with respect to the aforementioned one tracking drive 3. That is, the one tracking driving unit 3 is installed on the center column 2a, and the damping units 4 are symmetrically installed on each of the columns 2 of the both side columns 2. For example, in fig. 1, one damping device 4 is also disposed on each of the two struts 2b immediately adjacent to the strut 2a, and then the damping devices 4 are disposed one strut apart, for example, one strut 2c is disposed between the strut 2b and the outermost strut 2 d. In other words, the both-side damping devices 4 are preferably installed symmetrically with the support 2a at the tracking drive device 3 as the center. The damping devices 4 may be provided on all the struts 2 on both sides of the strut 2a, or the damping devices 4 may be provided on the struts 2 on both sides at intervals selectively. In this way, the correct attitude of the support can be better maintained. The damping devices 4 can be installed in a number that satisfies the principle that the tracking rotating part can effectively resist the strong wind oscillation.

Referring to fig. 1, as mentioned previously, the main beam 1 may support a plurality of purlins 5 distributed in the east-west direction, and the photovoltaic modules 20 may be supported on the plurality of purlins 5. The north end 321 of the transfer arm 32 may be attached to the main beam 1 at a location a23 between two adjacent purlins 5. Similarly, the north end 421 of the connecting arm 42 can also be connected to the main beam 1 at a position a24 between two adjacent purlins 5. That is, the north end of the adapter arm 32 and/or the connecting arm 42 may be attached to the main beam 1 at a location between two adjacent purlins 5.

Referring to fig. 6 and 7, the purlin 5 may include a body 51, a purlin bracket 52, and two braces 53. The strip body 51 extends in the north-south direction and is supported above the main beam 1 for supporting the photovoltaic module 20. That is, the photovoltaic module 20 is supported on a plurality of purlins 5, and the purlin 51 may also be referred to as a purlin body. The purlin bracket 52 can extend in the north-south direction and supports the main beam 1. That is, the purlin bracket 52 may be located below the main beam 1 to support the main beam 1. The two diagonal braces 53 may be located on both sides of the main beam 1 in the north-south direction, and connect both ends (i.e., the north and south ends) of the purlin bracket 52 with the bar body 51, respectively. Fig. 8A and 8B show a specific example structure of the purlin 5, wherein the purlin bracket 52 can be connected to the bar body 51 through fasteners 54, such as bolts, on the north and south sides of the main beam 1, and then supported below the main beam 1, and the inclined strut 53 plays a role in auxiliary connection and support. In one embodiment, as shown in fig. 9A and 9B, the purlin 5 may not include the brace 53, i.e., the purlin 5 may consist of only the body 51, the bracket 52, etc. For example, the bar body 51 may have a C-shaped or a U-shaped cross section, the diagonal brace 53 may have a U-shaped or a C-shaped cross section, and the purlin bracket 52 may have an L-shaped cross section or an angle steel. The purline 5 is a structure consisting of a line body 51, a purline support 52, an inclined strut 53 and the like, and can be supported more stably.

It is understood that the use of particular words herein to describe one embodiment of the utility model, such as "one embodiment," "another embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the utility model. Therefore, it is emphasized and should be appreciated that two or more references to "one embodiment" or "another embodiment" in various places throughout this specification are not necessarily to the same embodiment. Furthermore, some of the features, structures, or characteristics of one or more embodiments of the present invention may be combined as suitable.

Referring to fig. 2 to 5, the adapter arm 32 and/or the connecting arm 42 may be attached above the main beam 1. Both the transfer arm 32 and the connecting arm 42 may be referred to as rotating arms, and the description herein in terms of different terms is for convenience of description, and both may have the same exemplary configuration. Fig. 11A and 11B illustrate an example configuration of the swivel arm by taking the adaptor arm 32 as an example, the adaptor arm 32 may include two long arms 323 extending in the north-south direction, the two long arms 323 are both L-shaped cross sections, the vertical portions 323a of the L-shaped cross sections of the two long arms 323 are arranged back to back, and a rib plate 324 is obliquely arranged between the vertical portions 323a of the L-shaped cross sections of the two long arms 323, so that the two long arms 323 can be connected together, and the rigidity of the whole adaptor arm 32 can be enhanced. In the figure, the north end 321 and the south end 322 of the adapter arm 32 may be provided with a rib 323. In the figure, the north end 321 and the south end 322 of the adapter arm 32 may be provided with a through hole 325a, 325b for the hinge shaft to pass through to hinge the support post 2a (in fig. 2, the top through hole 223b of the support plate portion 223 supporting the bearing plate 22) and the tracking drive device 3 (in the figure, the free end 341 of the drive rod 34). In the drawing, two rib plates 324 are provided on the north side of the penetration holes 325a, 325b, respectively, and are inclined upward from the north side toward the south side, as shown in fig. 11A. Fig. 2 may be combined, which may facilitate the rotation of the stand toward the south without interfering with the hinge shaft.

Referring to fig. 6, the main beam 1 may be hinged to the upper end of the column 2c where the tracking drive 3 and the damping device 4 are not provided, by means of an adapter 61 attached above the main beam 1. That is, for the column 2a where the tracking drive means 3 is provided, the main beam 1 may be hinged to the upper end of the corresponding column 2a by the adapter arm 32 of the tracking drive means 3; for the posts 2b, 2d provided with the damping device 4, the main beam 1 can be hinged to the upper ends of the corresponding posts 2b, 2d by means of the connecting arms 42 of the damping device 4; for the column 2c, which is provided neither with the tracking drive 3 nor with the damping device 4, the girder 1 can be hinged to the upper end of the column 2c by means of an adapter 61. An example configuration of the adapter 61 may be combined with fig. 6 and 10A, and the adapter 61 may include a flat plate 611 and two lugs 612 protruding upward from the flat plate 611, the two lugs 612 being located on both sides of the escape opening 613 of the flat plate 611. Fig. 10B also shows an example configuration of the bracket 62, the bracket 62 being a plate having an escape opening 623 generally similar to the plate 611 of the adaptor 61. The adapter 61 and the support 62 can be respectively arranged above and below the main beam 1 in fig. 6, the adapter 61 can be connected above the main beam 1 by respectively connecting fasteners such as bolts through the flat plate 611 of the adapter 61 and the through holes at the four corners of the support 62, and the support 62 can also support the main beam 1. In one embodiment, as shown in fig. 10C, the adaptor 61 may be fixedly connected above the main beam 1 by using a hoop bolt 63, and a bottom section of the hoop bolt 63 may support the main beam 1.

In fig. 6, the post 2 may include a post 21 and a support bearing plate 22 attached to the upper end of the post 21, wherein the support bearing plate 22 may be attached to the upper end of the post 21, such as by welding or the illustrated fasteners 221, and the post 21 stands on a support surface such as the ground G0, thereby providing a support base for the entire east-west pursuit sun tracking photovoltaic fixture 10. The columns 21 may have an H-shaped, C-shaped, or rectangular cross section, for example, and in fig. 1, three or more columns 21 are arranged in the east-west direction.

Generally, in a east-west axis photovoltaic support, a tracking rotation part composed of a main beam, a purline, a photovoltaic module and the like is generally designed to be a symmetrical structure, particularly in the north-south direction. When the surface of the photovoltaic component in the tracking rotating part is horizontally placed upwards, the gravity center of the vertical section of the photovoltaic component is positioned on a north-south symmetry axis above the main beam, namely a symmetry axis between the main beam and the photovoltaic component. If the center of the hinge shaft supported by the upright post is designed to be superposed with the gravity center of the tracking rotating part, the upright post is arranged under the main beam, the center of the hinge shaft is arranged above the main beam, and the middle of the hinge shaft is just separated by one main beam, so that the upright post cannot be directly supported. Therefore, in fig. 2, the vertical center line of the hinge center X1 (vertical plane P0 to be described later) corresponds to a horizontal movement from the center of gravity to the south edge of the main beam 1, which coincides with the north-south axis of symmetry of the upright post 1, and by providing the support bearing plate 22 at the upper end of the upright post 21, the upright post 21 can directly support the hinge against the main beam 1 via the support bearing plate 22, and the center of gravity of the main beam 1 substantially coincides with the center of the cross section thereof, and at this time, the center of gravity of the main beam 1 in the tracking rotation portion has an eccentricity of substantially half the main beam width (north-south dimension) with respect to the hinge center X1. In actual operation, the photovoltaic modules 20 on the upper portions of the main beams 1 can be independently moved horizontally to the south, and the purlines 5 can be correspondingly adjusted, so that the gravity centers of the tracking rotating portions are also moved horizontally to the south and are overlapped with the hinge shaft center X1 as far as possible, and further balanced support is achieved. The supporting bearing plate 22 may be a one-piece flat plate member, and may include a bottom plate portion 222 attached to the side surface of the pillar 21 and a supporting plate portion 223 attached to an upper portion of the bottom plate portion 222. In the figure, the bottom plate portion 222 is larger in size in the north-south direction, and the leg plate portion 223 is smaller in size in the north-south direction. In particular, the north surface 223a of the leg portion 223 is offset to the south with respect to the north surface of the pillar 21, and thus can escape the main beam 1, allowing the main beam 1 to be hinged to the north side of the pillar 2 without being too far from the hinge axis center X1. The main beam 1 is hinged at the top to the brace portion 223. For example, the girder 1 may be hinged to the top of the leg portion 223 by being respectively inserted through the through hole 615 of the coupler 61 and the through hole 223b of the leg portion 223 at the top by hinge shafts. For example, a joint bearing may be installed at the junction of the top (of the support plate portion 223) of the support bearing plate 22 and the hinge shaft (i.e., in the through hole 223b), and a cylindrical bearing may also be installed. When the cartridge bearing is installed, the main beam 1 needs to be arranged as horizontally as possible. When the joint bearing is arranged, the main beam 1 can be horizontally arranged and can form a certain included angle with the horizontal plane, and the included angle is generally not more than 20 degrees. The hinge shaft can be a smooth rotating shaft, and can also directly use a bolt, particularly when a joint bearing is arranged.

In the embodiment shown in fig. 6, the bottom plate 222 supporting the bearing plate 22 can be fixed on the top of the upright post 21 by a fastener 221, and the connecting hole on the top of the upright post 21 can be opened to form a waist hole shaped up and down, so as to adjust the height of the supporting bearing plate 22 finely, and thus adjust the height of the hinge center X1. The main beam 1 is horizontally arranged in the east-west direction, the adapter 61 is arranged at the upper part of the main beam 1, the support 62 is arranged at the lower part of the main beam 1, and as mentioned above, the adapter 61 can be fixed at the upper part of the main beam 1 by a fastener. The fulcrum portion 223 supporting the bearing plate 22 is connected to the adaptor 61 by a hinge shaft, and the entire rotating portion is supported on the column 21. The north side surface 223a of the support plate portion 223 supporting the support plate 22 is tightly attached to the south side of the main beam 1, and when the angle is adjusted, the surface of the photovoltaic module horizontally arranged can only rotate clockwise to the south.

The escape openings 613 and 623 of the adaptor 61 and the holder 62 are aligned vertically, and the stay portion 223 of the support bearing plate 22 of the strut 2c can be escaped. The main beam 1 can be hinged to the column 2c by hinging the two lugs 612 of the connecting adaptor 61 and the top of the strip 223 (the through hole 223b) inserted between the two lugs 612. The adapter 61, the bracket 62, the supporting bearing plate 22, the hinge shaft and the like can be referred to as a balance supporting device, and it can be considered that the single main beam 1 is horizontally supported on the upright post 21 through the balance supporting device. The tracking rotation part composed of the photovoltaic module 20, the purlin 5, the main beam 1 and the like can rotate around a hinge shaft center X1 at the top of the pillar 2, an included angle between the surface of the photovoltaic module 20 and the horizontal plane, namely an installation inclination angle theta, starts from 0 degrees shown in figure 2 to perform tracking rotation towards south, and the effective range of the tracking rotation can be less than 90 degrees, for example, between 0 degrees and 70 degrees.

Referring to fig. 6, in the horizontal state shown in fig. 6, that is, in a state where the installation inclination angle θ of the photovoltaic module 20 is zero, the main beam 1 may abut on the surface of the column 1 on the north side. The north-side surfaces of the stay 1 may include the north-side surfaces of the upright posts 21 and the north-side surfaces 223a of the leg portions 223, wherein the main beam 1 abuts the north-side surfaces 223a of the leg portions 223. Thus, the main beam 1 can be stably held in a horizontal state by the abutment.

With reference to fig. 1 to 5, the mast 2, in particular the upright 21, can be attached with the base 7 in respective positions A3, a4, thereby hinging the tracking drive 3 and the damping device 4. As can be seen in connection with fig. 1 and 5, the base 7 can comprise a base plate 71 and two lugs 72 projecting outwards from the base plate, the base 7 being able to be fastened to the post 2 by means of fasteners connecting the base plate 71 to the south surface of the upright 21, while the two lugs 72 can be crossed by a hinging shaft, hinged to the tracking drive means 3 (in particular, in the figures, the bottom 331 of the drive seat 33) or to the damping means 4 (in particular, in the figures, the free end 441 of the damping rod 44). In another embodiment, the base 7 may include only two lugs 72, the two lugs 72 being welded directly to the south side surface of the post 21.

In the above-mentioned east-west axis sun-tracking photovoltaic support 10, an electric push rod as an example of the tracking driving device 3 may be installed at the middle upright post 21 for driving the entire rotating portion to track and rotate. One end of the electric push rod is connected to the outer end (i.e., south end 322) of the transfer arm 32, and the other end is hinged to the upright 21 through the base 7, as shown in fig. 1, 2 and 3. In the design process, when the push rod reaches the longest stroke (namely, the stroke reaches the maximum), the surface of the photovoltaic module is set in a horizontal state, when the push rod contracts, the surface of the photovoltaic module rotates towards the south, and when the push rod reaches the shortest stroke (namely, the stroke reaches the minimum), the installation inclination angle theta reaches a set limit tracking angle, the limit tracking angle can be selected according to the conditions of the arrangement distance of the photovoltaic arrays, the local longitude and latitude and the like, and is generally not suitable for being larger than 90 degrees, and further not suitable for being larger than 70 degrees. Therefore, the effective stroke of the electric push rod can be fully utilized, and the tracking and limiting effects can be achieved.

In the above-mentioned east-west axis sun-tracking photovoltaic support 10, hydraulic dampers as examples of the damping device 4 may be further installed on the pillars 21 at both sides, so as to prevent the tracking rotation part from oscillating in strong wind, one end of the hydraulic damper is hinged to the outer end of the connecting arm 42, and the other end is hinged to the pillar 21 through the base 7, as shown in fig. 1, 4 and 5. In design, a stroke margin can be left at the upper and lower stroke positions of the hydraulic rod as the damping rod 44, namely when the surface of the photovoltaic module 20 is just in a horizontal state, the stroke of the hydraulic rod is close to the maximum value, the hydraulic rod contracts along with the contraction of the push rod as an example of the driving rod 34, and the stroke of the hydraulic rod is close to the minimum value when the installation inclination angle theta reaches the set limit tracking angle. The hydraulic rod has certain stroke allowance in the up-down stroke, so that the driving rod 34 and the damping rod 44 can be prevented from interfering with each other.

The east-west axis sun-chasing tracking photovoltaic support 10 makes full use of the characteristic that the east-west axis sun-chasing tracking is adjusted and changed in a unidirectional south-facing direction, and can adopt a balanced supporting mode, so that the negative influence caused by additional bending moment of a tracking rotating part is fundamentally eliminated, and the driving tracking is more portable and flexible.

Fig. 6 shows a vertical plane P0 passing through the hinge axis center X1, in which the vertical plane P0 is also a symmetric center plane of the pillar 21 in the north-south direction. In the embodiment shown in fig. 2 to 7, the north side surface 223a of the brace portion 223 for abutting against the main beam 1 coincides with the vertical plane P0. That is, in the horizontal state shown in fig. 6, the surface of the main beam 1 on the south side (or the south side edge) may coincide with the vertical plane P0, that is, the section center O1 of the main beam 1 is offset to the north side by substantially half the width of the main beam 1 compared to the hinge axis center X1.

In the above-mentioned east west axle chases after a day and trails photovoltaic support 10, every articulated department can all adopt joint bearing. For example, the free end 341 of the driving rod 34 or the free end 441 of the damping rod 44 may be a joint bearing, and the corresponding hinge shaft may be a bolt.

According to the east-west axis sun-tracking photovoltaic support 10, the tracking driving device 3 on the middle upright post 2 can drive the whole rotating part to track and rotate, so that the surface of the photovoltaic module 20 can track the change of the solar altitude angle in real time. The damping devices 4 on the two sides can prevent the support from vibrating when encountering wind gusts, so that the tracking rotating part always keeps a correct posture. When strong wind comes, the tracking rotating part can also enter a flat wind-sheltering state through the action of the tracking driving device 3. Generally, the east-west axis sun tracking photovoltaic support 10 is a photovoltaic array support capable of realizing real-time sun tracking of the east-west axis, and can make the installation inclination angle θ formed between the surface of the photovoltaic module 20 and the horizontal plane in the range of 0 ° to less than 90 ° (e.g., 70 °) according to the change rule of the solar altitude, track the change of the solar altitude in real time with the optimal inclination angle posture, and improve the annual power generation amount of the photovoltaic module more effectively.

Fig. 12A and 12B show an embodiment in which the north-side surface 223a of the stay portion 223 for abutting the main beam 1 is offset to the north side by a little compared to the vertical plane P0. That is, in the horizontal state shown in fig. 12A, the surface of the main beam 1 on the south side may be offset to the north side by a predetermined distance, which is less than half the width of the main beam 1, compared to the vertical plane P0. That is, the section center O1 of the main beam 1 is offset to the north side by a distance of less than half the width of the main beam 1 substantially compared to the hinge axis center X1.

As mentioned above, the photovoltaic module 20 can be moved to assist in tracking the sun of the photovoltaic support 10 by the above-mentioned structural design of the east-west axis so that the center of gravity of the entire rotating portion coincides as much as possible with the hinge axis center X1. In the case where the driving force of the tracking driving unit 3 is sufficiently large and the overall structure of the carriage needs to be optimized, as described above, the center of gravity of the tracking rotary portion and the hinge axis center X1 may not be completely coincident, but a certain error may be allowed, for example, to ensure that the distance between the center of gravity and the hinge axis center X1 is as small as possible, for example, within 5cm, so that the tracking rotary portion is in a balanced support state or a quasi-balanced support state (that is, the additional bending moment generated by the tracking rotary portion does not affect the tracking driving). In other words, in practical engineering applications, the centers of gravity of the tracking rotating parts should be as close as possible to the hinge axis center X1, but not necessarily completely coincident. Therefore, under the condition that the structure allows, and the tracking rotation portion satisfies the condition that the support bearing plate 22 does not interfere with the arrangement of the photovoltaic modules 20 in series on the main beam 1 within the rotation adjustment range, the vertical center line (vertical plane P0) of the hinge axis center X1 does not have to be moved to the south side edge of the main beam 1 as long as the above-mentioned condition is satisfied by the proper south movement. That is, the eccentricity between the center of gravity and the center of the hinge shaft may be smaller than half the width of the square pipe as an example of the main beam 1, and at the same time, the photovoltaic module 20 on the upper portion of the main beam 1 may move only a little, and in some cases, when the vertical center line (the vertical plane P0) of the center of the hinge shaft deviates south enough and the tracking driving thrust is large enough, the photovoltaic module 20 on the upper portion of the main beam 1 may not move, that is, the whole rotating portion may still be a symmetrical structure, as shown in fig. 12A and 12B.

In the embodiment shown in fig. 13A and 13B, the cross section of the main beam 1 is circular compared to the embodiment shown in fig. 12A and 12B, and the center O1 of the cross section is the center of the circle. The point (substantially, the line) of the main beam 1 located on the south most side may be offset to the north side from the vertical plane P0 by a predetermined distance which is less than the section radius of the main beam 1. That is, the section center O1 of the main beam 1 is offset to the north side by a distance less than the section radius of the main beam 1 substantially compared to the hinge axis center X1.

According to the east-west axis sun-tracking photovoltaic support, the characteristic that the east-west axis photovoltaic support is adjusted and changed in a one-way south-facing direction during sun tracking is fully utilized, and the main beam, the tracking driving device and the damping device are respectively arranged on the south side and the north side of the support column, so that driving and tracking are more flexible and portable. Because east-west axis chases after the sun tracking angle change scope is little, is more favorable to the actuating lever straight line flexible such as this kind of linear drive mode of electric putter, compares in the operating mode that electric putter is used for the flat unipolar tracking support of north-south axis chasing after the sun, is used for the actuating lever that the east-west axis chased after the sun tracking, under same stroke condition, the minimum moment of production is bigger, and its efficiency of use strengthens by times almost. In addition, the damping efficacy of the damping device such as a hydraulic damper is also multiplied, as is the tracking drive such as an electric push rod. Therefore, under the condition that the effects of the tracking driving device and the damping device are improved in multiples, the whole-row driving can realize stable driving and wind-shielding locking only by arranging one tracking driving device in the middle, a complex linkage mechanism is not needed, the cost is saved, and the control is convenient. And also. When the flat single-shaft tracking support for the north-south shaft sun tracking is in a strong wind leveling condition, because both sides of the east and the west are not leaned, the whole rotating part is easy to shake back and forth in the east-west direction under the action of strong wind, and when the flat single-shaft tracking support for the north-south shaft sun tracking is in the strong wind leveling condition, the tracking rotating part is just in the north limiting position, the strong wind can only force the tracking rotating part to shake towards the south, so that the problem of back and forth shaking in the north-south direction can not occur, even if the unidirectional south-south shaking occurs, the shaking amplitude is greatly reduced, in addition, the effects of the damping devices on both sides are increased in a double mode, the wind resistance of the flat solar tracking support for the north-south shaft sun tracking is also enhanced in a double mode, and the solar tracking photovoltaic support for the north-south shaft sun tracking also has better wind resistance in the strong wind leveling condition.

The east-west axis sun-tracking photovoltaic support carries out real-time sun-tracking, and the annual generation increment of the east-west axis photovoltaic support for improving the generated energy by taking the installation inclination angle of the photovoltaic module as a means can be maximized. This east-west is chased after sun and is trailed photovoltaic support can dispose automatic control system, can realize in real time tracking the change of sun altitude angle like this, makes photovoltaic module surface be in best photic angle all the time, and then makes photovoltaic module electricity generation increment maximize. In addition, the intelligent tracking system can be combined with an intelligent power generation control system, intelligent tracking of any angle and any time can be achieved in an effective tracking range under the conditions of factors such as double-sided light receiving conditions of the integrated component, direct illumination light intensity change in sunny weather, environmental reflection conditions and the like, power generation increment maximization of the photovoltaic component under various different illumination and reflection conditions is met, and the overall economic benefit of the photovoltaic power station is effectively improved.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the utility model, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims (9)

1. An east-west sun-tracking photovoltaic bracket comprises a main beam extending along the east-west direction and a plurality of struts distributed along the east-west direction, and is characterized in that,

the solar tracking photovoltaic support for the east-west axis further comprises a tracking driving device and a plurality of damping devices, the main beam is hinged to the north sides of the plurality of supporting columns, and the tracking driving device and the plurality of damping devices are respectively supported by the corresponding supporting columns on the south sides of the plurality of supporting columns; the tracking driving apparatus includes:

the driving unit comprises a driving seat and a driving rod; and

the switching arm extends in the north-south direction, the north end of the switching arm is connected with the main beam, the free end of the driving rod and the first side of the driving seat are hinged with the south end of the switching arm, the free end of the driving rod and the second side of the driving seat are hinged with the position, below the main beam, of the corresponding support column, the driving rod is arranged to linearly extend and retract relative to the driving seat under the driving action, the main beam is driven to rotate around a shaft through the switching arm, and therefore the photovoltaic module supported on the main beam is driven to track the sun;

the damping device includes:

the damping unit comprises a damping seat and a damping rod, wherein the damping rod is linearly and telescopically arranged on the damping seat, and the damping seat provides damping force for linearly extending and retracting the damping rod; and

the connecting arm extends in the north-south direction, the north end of the connecting arm is connected with the main beam, the free end of the damping rod and the first side of the damping seat are hinged with the south end of the connecting arm, and the free end of the damping rod and the second side of the damping seat are hinged with the position, below the main beam, of the corresponding support; and is

The main beam is hinged to the upper end of the corresponding support column through the switching arm and/or the connecting arm, so that the center of gravity of a tracking rotating part in the east-west axis sun-tracking photovoltaic support is consistent with the center of a hinge shaft of the main beam, and the tracking rotating part comprises the main beam and a part which rotates along with the main beam in a tracking mode.

2. The east-west solar tracking photovoltaic mount of claim 1,

the east-west axis sun-tracking photovoltaic support only comprises one tracking driving device.

3. The east-west solar tracking photovoltaic mount of claim 2,

two struts located outermost in the east-west direction support two damping devices of the plurality of damping devices, respectively.

4. The east-west solar tracking photovoltaic mount of claim 2,

the plurality of damping means are symmetrically distributed in the east-west direction with respect to the one tracking driving means.

5. The east-west solar tracking photovoltaic mount of claim 1,

the free end of the driving rod is hinged with the south end of the transfer arm, and the driving seat is hinged with the corresponding support column through the bottom.

6. The east-west solar tracking photovoltaic mount of claim 1,

the photovoltaic module is supported on the purlins, and the north ends of the transfer arms and/or the connecting arms are connected to the position, located between two adjacent purlins, of the main beam.

7. The east-west solar tracking photovoltaic mount of claim 6,

the purlin includes:

the strip body extends in the north-south direction, is supported above the main beam and is used for supporting the photovoltaic module;

the purlin support extends in the north-south direction and supports the main beam; and

and the two inclined struts are positioned on two sides of the main beam in the north-south direction and respectively connect two ends of the purlin support with the bar body.

8. The east-west solar tracking photovoltaic mount of claim 1,

the transfer arm and/or the connecting arm are/is connected above the main beam;

the main beam is hinged to the upper end of a support column which is not provided with the tracking driving device and the damping device through a connector connected above the main beam.

9. The east-west solar tracking photovoltaic mount of claim 1,

and in the state that the installation inclination angle of the photovoltaic module is zero, the main beam is abutted against the surface of the support column positioned on the north side.

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