WO2021068201A1

WO2021068201A1 - Photovoltaic tracking support containing dynamic triangular tracking supporting structure and system thereof

Info

Publication number: WO2021068201A1
Application number: PCT/CN2019/110623
Authority: WO
Inventors: 楼振越
Original assignee: 上海能耀新能源科技有限公司
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2021-04-15

Abstract

A solar single-axis tracking support containing a dynamic triangular tracking supporting structure, comprising: a main beam (2), a plurality of cross beams (3), a supporting structure (4), and a plurality of single stand columns (5); the main beam (2) is fastened together with the plurality of cross beams (3); at least one of the cross beams (3) corresponds to one stand column (5); the supporting structure (4) is retractable, and one end of the supporting structure is connected to the cross beam (3) and the other end thereof is connected to the stand column (5); the cross beam (3) and the corresponding single stand column (5) are connected together by means of the supporting structure (4) to form a dynamic triangular tracking supporting structure; the center of the cross beam (3) can rotate around the connecting axis of the stand column (5); the supporting structure (4) transmits rotating power by means of a drive shaft (45), and the power of the drive shaft (45) comes from a motor, a speed reducer or a linkage shaft (7); the supporting structure (4) produces a linear telescopic motion under the driving of the drive shaft (45), thereby pushing the cross beam (3) to rotate around the stand column (5) and accordingly achieving the function of tracking the moving trajectory of the sun.

Description

Photovoltaic tracking support with dynamic triangular tracking support structure and its system

Technical field:

This patent is applicable to the tracking bracket and system of solar panels in solar power plants, and particularly relates to an adjustable solar tracking bracket and system for large-scale use.

Background technique:

The solar automatic tracker can help solar photovoltaic or photothermal devices (such as photovoltaic panels, etc.) to better receive sunlight to improve power generation efficiency, thereby reducing power generation costs. Common solar trackers, taking photovoltaics as an example, can be roughly divided into two categories, namely single-axis trackers and dual-axis trackers. The single-axis tracker mainly tracks the east-west movement of the sun, and the dual-axis tracker can track the sun's movement in the east-west and north-south directions at the same time. Compared with the dual-axis tracker, the advantage of the single-axis tracker is that the system structure is simple, and most of the benefits of dual-axis tracking can be obtained on the basis of very little cost, thereby reducing the solar energy production cost most effectively .

Traditional solar single-axis trackers generally use rotary reducers, linear motors or motor gearboxes to drive photovoltaic modules to rotate. The method of rotary reducer is mostly suitable for the situation where the length of the photovoltaic array is short, the row is narrow, and the wind pressure is low. The disadvantage of the linear motor drive method is that only a small number of linear motors can be installed to drive the rotation of the photovoltaic module, resulting in insufficient rotation power, and the installation of more linear motors will cause the problem of difficulty in synchronization.

The problem of using a motor gearbox to drive photovoltaic modules is that the driving force is small and cannot be applied to wide-row modules or large partial pressures.

CN106972813A discloses a manual single-axis tracking solar support. See Figure 1. It includes a support, an angle adjustment support, a solar panel fixing support, and a supporting beam. The support is made of channel steel and has an inverted "T" structure, and a bearing seat is installed on the top. ，Used to be movably connected with the hollow shaft. The angle adjustment bracket is provided with a plurality of equidistant holes on the semicircular support rods, which are fixed coaxially with the holes by bolts. The prior art patent changes the structure of the supporting column to an inverted "T" type mechanism, and the contact point with the ground becomes an edge, which improves the stability of the support, but the inverted "T" grounding edge requires additional material costs. , Resulting in increased product costs and insufficient competitiveness. At the same time, this structure cannot be widely applied to ground photovoltaic power plants due to the additional labor cost caused by manual adjustment.

CN106026884A discloses a tracking support structure for push-pull rods, see Figure 2, which is composed of a driving device, a driving arm, a push-pull rod, a driven arm and components. The push-pull rod is connected with the driven arm so that the components follow the driving arm to rotate and track the sun The angle changes. The advantage of this structure is that only one tracking bracket in the center is driven by a motor to rotate, and the push-pull rod is connected with the driven mechanism to realize simultaneous rotation of a row of tracking brackets. The disadvantage of this structure is that the initial angle of the photovoltaic tracking bracket is affected by the length deviation of the push-pull rod, the installation error of the row spacing, etc., which leads to the tracking accuracy of the solar tracking bracket and ultimately affects the power generation.

US2016/0013751A1 discloses a tracking support system for solar panels, including: a fixed ground anchor structure; a movable structure, which includes a platform for supporting solar panels, the platform can be rotatably installed around the main axis of rotation On the fixed structure; the mechanical system is used to drive the movable structure to rotate around the main axis of rotation; the actuation system, which is coupled to its mechanical drive system through a mechanical transmission device extending parallel to the main axis of rotation, and drives the platform to rotate accordingly. The supporting structure realizes synchronous rotation of a row of tracking brackets by driving a tracking bracket to rotate and driving a driven mechanism through a transmission mechanism to realize a row of tracking brackets to rotate synchronously, thereby saving cost. The patent further provides ways to apply different mechanical transmission devices. At the same time, it adopts an open worm gear mechanism, which is easily affected by the environment, such as sand or other foreign objects entering the meshing place, which may cause jamming. In addition, due to the structure of the worm gear, its axis space is perpendicular to each other, resulting in a deviation of the drive center, and finally the transmission shaft and the fixed shaft cannot be fixed coaxially, which makes the installation and fixation complicated. In addition, it also provides a threaded rod mechanism driven by a conveyor belt. See Figure 3. The threaded rod has a fixed length. The lower end of the threaded rod 261 is engaged with the nut 260. The nut 260 is fixed to the horizontal shaft 264 of the structure 21 through the A-shaped structure. Vertical threaded rod 261, the threaded rod can extend out of the fixing nut during the transmission process, this way is easy for other parts to interfere, and the space requirement is large. Therefore, the nut cannot be installed near the upper side of the battery plate, otherwise the battery plate may be damaged when the threaded rod extends upward, and the fixing method is complicated. In order to avoid interference, the transmission mechanism is installed in a lower position and its application is limited, especially in the case of agricultural light complementation or complex terrain, so that the lower part of the bracket cannot pass through or affect planting. In addition, installing the transmission system on the side close to the ground is more likely to be damaged by flooding or heavy snow. At the same time, conveyor belts must be passed between the uprights of different mechanisms, so that the uprights have to avoid the transmission belt, and can only be used for A-shaped uprights and cannot be applied on a single upright, resulting in high costs. In addition, the low belt transmission accuracy affects the tracking accuracy of the tracking bracket and ultimately affects the system's power generation.

CN206490639U discloses a solar tracking support structure, see Figure 4, the structure has a dual-axis system, the day angle adjustment drive component can adjust the angle clockwise or counterclockwise along the central axis of the solar panel, and adjust the support through the seasonal angle The angle of the rod 6'is adjusted by adjusting the position of the fixed hook connected to the column, but because the length of the adjusting support rod 6'is fixed, the angle adjustment range is limited and can only be performed within a small range However, this support rod structure is only suitable for seasonal adjustments, and is not suitable for tracking the angle of the sun daily. In addition, there are many parts and complicated structure, which may lead to reliability problems.

These traditional tracker structures are driven manually or by a motor to make the solar panels rotate at the angle of sunlight. The prior art discloses the use of a combination of a driving device and a driven device to realize that a row of solar panels can be driven by only one motor, which saves costs. However, these existing structures either use the support of a single column and do not provide good support for the photovoltaic module row, and the stability is poor. Either a single column is changed to multiple columns, such as an A-shaped three-sided structure, or an inverted "T" support column. Although a stable support structure is adopted, it also increases the material cost, resulting in a lack of competitiveness of the product. In addition, the installation of the transmission mechanism close to the ground side also has many disadvantages. In addition, in the tracker structure of the prior art, especially the single-rotating beam structure, the connection between the rotating beam and the bearing and the bearing box is mainly bolted, and the adaptability to ground undulations is relatively poor.

In order to solve the above multiple technical problems at the same time, this patent proposes a new solution, which is applied to a large-scale solar power station, which not only realizes a single drive device to drive a row of solar panels, but also a single shaft with a more stable structure and a more economical material. tracking device. This patented solution designs the dynamic triangular tracking support structure and the overall structure of the adaptive bearing for the photovoltaic tracking support. Only a single column is used in the dynamic triangular tracking support structure, which not only saves costs, but also makes the tracking support and the tracking support due to the stable triangular structure. The system performance is more stable, and the transmission device is installed on the side (upper side) close to the solar panel, which can better adapt to the environment. In addition, the use of ellipsoidal adaptive bearings can better adapt to ground fluctuations and improve the adaptability of the photovoltaic tracking bracket.

Summary of the invention:

A solar single-axis tracking support including a dynamic triangular tracking support structure, including a main beam, and a plurality of beams, a supporting structure, a plurality of single uprights, the main beam and a plurality of beams are fastened together, at least one beam and one The corresponding column is characterized in that the supporting structure is a telescopic structure, one end is connected to the beam, the other end is connected to the column, the beam and the corresponding single column are connected together by the supporting structure to form a dynamic triangular support structure, the center of the beam It can rotate around the connecting shaft of the column. The dynamic triangle tracking support structure transmits rotational power through the drive shaft. The power of the drive shaft comes from the motor, reducer or linkage shaft. The dynamic triangle tracking support structure generates linear telescopic motion due to the drive of the drive shaft. , So as to push the beam to rotate around the column, so as to achieve the function of tracking the sun's trajectory.

Further, the main beam may be one or two.

Furthermore, it also contains a secondary beam.

Furthermore, it also includes a linkage shaft. The linkage shaft is connected to the drive shaft of each support structure. When the motor drives the drive shaft of one support structure to rotate, the linkage shaft rotates synchronously and drives the drive shafts of other support structures to follow, thereby realizing all The supporting structure does synchronous telescopic movement. The linkage shaft is installed on the side far from the ground and close to the main beam.

Furthermore, the solar dynamic triangular tracking support structure includes a transmission mechanism composed of a gear set and a lead screw. When the drive shaft rotates, the gear set and the lead screw are driven to rotate, thereby realizing the telescopic movement of the support structure.

Further, the gear set preferably includes a bevel gear set.

Furthermore, it also includes a linkage shaft. The linkage shaft is connected to the drive shaft of each support structure. When the motor drives the drive shaft of one support structure to rotate, the linkage shaft rotates synchronously and drives the drive shafts of other support structures to follow, thereby realizing all The supporting structure does synchronous telescopic movement.

Furthermore, the support structure also includes a guide inner sleeve and a guide outer sleeve. When the lead screw rotates, the guide inner sleeve can be driven to move up and down in the guide outer sleeve.

Furthermore, the beam and a column are installed together to form a movable fulcrum through an ellipsoidal adaptive bearing. The support rod connects one end of the beam and the bottom of the column to form a triangle, and the change of the length of the support rod forms a dynamic triangle.

Further, the cross-sectional shape of the single column is C-shaped or I-shaped.

Further, the ellipsoidal adaptive bearing mounting components include an ellipsoidal adaptive bearing core, a support rod, a support frame and bolts. The center of the ellipsoidal bearing core passes through the support rod structure, and the bearing core is firmly connected to the support rod. The bearing core is mounted on On the support frame, the bearing and the support frame are fixed on the upright column with bolts, and the two ends of the support rod passing through the bearing core respectively pass through the openings at the corresponding positions of the cross beam.

Further, the two ends of the bearing core are concave or convex ellipsoid surfaces, the inner side of the upper end of the support frame forms a convex or concave ellipsoid surface, and the inner and outer convex or concave ellipsoid surface and the concave or convex ellipsoid bearing core Face match.

Furthermore, at least one opening is provided on the upright column, and at least one annular hole on the support frame of the ellipsoidal adaptive bearing corresponds to the opening on the upright column, and is used to adjust the angle after being fixedly connected with the ellipsoidal adaptive bearing to adapt to the respective site. The installation is skewed due to the cause.

Furthermore, there are two strip-shaped holes on the upright column, and two annular holes at the lower end of the support frame, and the two annular holes correspond to the two strip-shaped holes on the upright column.

Further, the two ends of the bearing core are spherical or concave, and the upper end of the support frame is close to the bearing core to form a concave or convex spherical surface, which is matched with the convex or concave spherical surface at both ends of the ball bearing core.

Further, the ellipsoidal or spherical bearing core and the support rod structure are integrally formed.

Further, the support frame of the ellipsoidal adaptive bearing on the column has two annular holes, and the annular opening at the lower end is longer than the upper end.

Further, it includes an adjustment bracket 9 with a plurality of equally spaced circular holes, and the adjustment bracket is fixedly installed on the column. The support rod structure passes through a circular hole of the adjustment bracket to adapt to the adjustment of the ellipsoidal adaptive bearing angle. Adapt to the change of the end position of the support rod structure.

Furthermore, the material of the ellipsoidal adaptive bearing is metal materials such as cast iron, cast steel, and cast aluminum.

Further, it also includes a solar panel, which is installed above the main beam.

Description of the drawings:

Figure 1 Manual single-axis solar tracking support structure in the prior art

Figure 2 Single-axis solar tracking support structure with a driven device in the prior art

Figure 3 A single-axis solar tracking support structure with a driven device and a support rod in the prior art

Figure 4 The solar tracking support structure with support rod adjustment in the prior art

Figure 5 Schematic diagram of the patented solar single beam tracking bracket system

Figure 6 Schematic diagram of the patented solar dual-beam tracking bracket system

Figure 7 Schematic diagram of the patented solar three-beam tracking bracket system

Figure 8 The retractable support structure in the patented solar dynamic triangle

Figure 9 Cross-sectional view of the retractable support structure in the solar dynamic triangle of the patent

Figure 10 The operation principle diagram of the retractable support structure in the solar dynamic triangle of the patent

Figure 11 Schematic diagram of dynamic triangular tracking support structure with spherical adaptive bearing installed

Figure 12 Installation schematic diagram of spherical adaptive bearing and column and beam

Figure 13: Schematic diagram of installation of spherical adaptive bearing, column and beam, and adjustment device

1. Photovoltaic module 2. Main beam 3. Cross beam 4. Support structure 5. Column 6. Linkage shaft 7. Secondary beam 8. Spherical adaptive bearing assembly

41. Base 42, Bearing 43, Bevel Gear 44, Bearing 45, Drive Shaft 46, Bevel Gear 47, Bearing 48, Lead Screw 49, Transmission Nut 50, Housing 51, Guide Outer 52, Guide Inner Sleeve 53, Transmission Nut

81. Spherical adaptive bearing core 82, spacer 83, support frame 84, retaining ring 85, bolt

Detailed ways:

Figure 5-7 shows the solar tracking system installed with the patented dynamic triangular tracking support structure. The solar tracking system in FIG. 5 includes: a photovoltaic module 1, a main beam 2, a cross beam 3, a supporting structure 4, a column 5, and a linkage shaft 6. The two main beams are fastened to several beams, and the photovoltaic modules are installed on the main beams. The support structure 4 is a telescopic structure. The beam and the corresponding column are connected by the telescopic support structure 4 to form a dynamic triangular tracking support structure. The center of the beam can rotate around the connecting axis of the column. One end of the telescopic support structure is connected with the beam, and the other end is connected with the column. The drive shaft support structure 4 transmits rotational power, and the power of the drive shaft comes from a motor. The telescopic support structure produces linear motion due to the drive of the drive shaft, pushing the beam to rotate around the column, so as to achieve the function of tracking the sun's trajectory.

In addition, the support structure 4, the beam and the column are installed together through the ellipsoidal adaptive bearing shown in Figs. 11-14 to form a dynamic triangular support structure.

Compared with the solar tracking system of Fig. 5, the solar tracking system of Fig. 6 is different only in the structure of two main beams.

Compared with the solar tracking system of Fig. 5, the solar tracking system of Fig. 7 is different only in that there are two main beam structures, and there is also a secondary beam structure located at the center of the two main beams.

Figures 8-10 are structural diagrams and action diagrams of the dynamic triangular tracking support rod structure of this patent.

In the embodiment of this patent, the retractable support rod 4, the column 5 and the cross beam 3 form a dynamic triangular stable support structure, which saves the material for the support column and improves the bearing capacity and stability of the support structure. The support structure is telescopically supported. The adjustment of the length of the pole realizes the rotation direction of the photovoltaic module and realizes the tracking of the sun.

As shown in Figures 9 and 10, the structure of the telescopic support rod 4 includes: a base 41, a bearing 42, a bevel gear 43, a bearing 44, a drive shaft 45, a bevel gear 46, a bearing 47, a lead screw 48, a transmission nut 49, The outer shell 50, the guide outer sleeve 51, the guide inner sleeve 52 and the transmission nut 53. The bearing 42 is installed on the base and connected with the drive shaft 45. The bevel gear 43 is connected to the drive shaft 45 through a key. The bearing 44 is mounted on the base 41 and is mounted with the drive shaft 45. The bevel gear 46 and the lead screw 48 are connected together by a key, and the bevel gear 46 and the bevel gear 43 mesh together to form a gear pair, which can transmit torque, thereby driving the rotation of the lead screw 48. The bearing 47 is installed on the base 41 and cooperates with the lead screw 48. The thrust bearing 49 is mounted on the lead screw 48. The transmission nut 53 is connected with the lead screw, and the outer side of the transmission nut 53 and the inner side of the guide inner sleeve 52 are fastened together.

Connect a conventional driving device such as a motor to the drive shaft 45. When the drive shaft 45 rotates, the bevel gear 43 is driven to rotate, and thus the bevel gear 46 is driven to rotate synchronously. The bevel gear 46 drives the lead screw to rotate 48 because the bevel gear 46 and The lead screw 48 is fastened together, so the lead screw 48 cannot move axially relative to the bevel gear 46, but can only rotate in situ relative to the base 41. The in-situ rotation of the screw 48 can push the transmission nut 53 to move linearly along the screw 48, so that the guide inner sleeve 52 can move up and down in the guide outer sleeve 51 (the sequence of movement from ○1 to ○5 in the above figure), resulting in support The overall length of the rod 4 is reduced or increased, that is, the expansion and contraction of the support rod 4 is realized.

In the embodiment of Figs. 5-7, a dynamic triangular tracking support structure as shown in Figs. 8-10 is installed on each column. A driving device such as a motor is connected to the drive shaft 45 of one of the support rods 4 structure, preferably the support rod 4 in the central position is structurally connected, and is connected to the drive shaft 45 of the other support rod 4 structure through a transmission device, such as the linkage shaft 6. In this way, the drive shaft 45 of the support rod 4 structure that outputs power to the center position is rotated by a motor, and the linkage shaft 6 is driven to rotate synchronously, so that the drive shafts 45 on the other support rods 4 rotate synchronously, thereby realizing the structure of each support rod 4 Synchronous expansion and contraction.

The dynamic triangular tracking support structure transmits rotational power through the drive shaft, and the power of the drive shaft comes from the motor. The dynamic triangle tracking support structure produces linear motion due to the driving of the drive shaft, pushing the beam to rotate around the column, thereby achieving the function of tracking the sun's trajectory.

In the embodiment of Figs. 8-10 of this patent, the combination of a gear set composed of two bevel gears and a lead screw drives the inner sleeve to expand and contract within the outer sleeve, thereby realizing the expansion and contraction of the support rod 4. The combination of gear sets and lead screws of other numbers and shapes can also be used to achieve the same function, which also belongs to the inventive concept of this patent.

In addition, in Examples 8-10, the drive shaft drives the rotation of the gear set and the lead screw to drive the inner sleeve to expand and contract within the outer sleeve, thereby realizing the expansion and contraction of the support rod, which is only a preferred embodiment of this patent. It is obvious to those skilled in the art that other structures can also be used to achieve the expansion and contraction of the support rod. As long as the support rod is telescopic and fixedly connected with the beam and the column, a dynamic triangular support structure is formed, which can achieve stability. Support and save the material of the column.

Embodiments 8-10 of this patent are all equipped with a linkage shaft 6, the function of the linkage shaft 6 is to save the drive motor, preferably only one motor is used to drive the drive shaft 45 of the support rod 4 structure at the central position of the column. By using the linkage shaft 6 to realize the follow-up of the drive shaft 45 of the support rod 4 structure in other positions, the synchronous expansion and contraction of each support rod 4 can be realized. Obviously, it is also a feasible solution to set multiple motors to drive the drive shaft 45 of the support rod 4 structure at multiple positions to rotate, as long as the motors are controlled to be synchronized.

Figure 11 is a schematic diagram of a dynamic triangular tracking support structure installed with a spherical adaptive system. The main beam of the solar tracking bracket system is fastened to several beams, one beam is connected to a column, and the center of the beam can be connected around the column. The spherical adaptive bearing rotates. One end of the dynamic triangle tracking support structure is connected with the beam, and the other end is connected with the column. Figure 12 shows the installation position of the ellipsoidal adaptive bearing.

14 shows that the ellipsoidal adaptive bearing assembly includes an ellipsoidal adaptive bearing core 81, a support rod 86, a spacer (not shown), a support frame 83, a retaining ring (not shown) and a bolt 85. The ellipsoidal adaptive bearing core is installed between the beam and the support frame. The inner part of the support frame and the convex ellipsoidal bearing core are in a concave circular shape. The bearing core 81 is placed on the support frame 83, and the two end sleeves are installed after installation. Spacer, this part is fastened to the upright post by bolts 85 after installation. Then install the ellipsoidal self-adaptive bearing mounting component and the beam together. The two ends of the bearing core respectively pass through the openings in the corresponding position of the beam, and the two ends are covered with spacers, and the retaining ring is used to block the beam to prevent the beam from being axially along the bearing core Flutter. Although the embodiment discloses that spacers and retaining ring components are used to prevent the beam from moving axially along the bearing core, the spacers and retaining rings may not be used, or other replaceable components are also used to prevent the beam from moving along the bearing core. The bearing core moves axially.

The bearing core shown in Figure 14b is a concave ellipsoid, and correspondingly, the inner part of the support frame and the inner concave ellipsoidal bearing core are in a convex circular shape.

The concave or convex end surfaces of the ellipsoidal bearing core are matched with the convex or concave surface formed on the inner side of the upper end of the support frame. According to the installation site, even if the ground is uneven, the axis of the ellipsoidal bearing core presents a certain angle The oblique, ellipsoidal spherical bearing adopts spherical fit, and slides in the spherical surface to adapt to the deflection caused by terrain undulation and product installation deviation. Unlike ordinary plastic cylindrical sliding bearings, clearance is used to compensate for installation deviation. There is no gap, no shaking or vibration under the action of wind, no noise or wear caused by this, the product is safer and more reliable. Spherical adaptive bearings are mainly made of metal, and there is no aging problem caused by plastic bearings due to outdoor applications. Compared with other bearings, the spherical bearing adopts spherical contact, the force is more uniform, and there is no stress concentration. The spherical self-adaptive bearing adopts the axis of the spherical bearing core to slide and adjust in the support frame, which is simple to realize, does not need extra parts to adjust, and saves manpower.

After the photovoltaic modules are installed, they are on the same plane, because they have to adapt to the undulations of the ground. For this reason, the installation of the dynamic triangle tracking support structure and the column needs to be adjusted with the adjustment bracket 9 shown in Figure 13. A plurality of equally spaced circular holes are set on the adjustment bracket 9 to fix the adjustment bracket to the column, and the support rod 4 The structure passes through a circular hole through the adjustment bracket to adapt to the change of the end position of the support rod 4 when the spherical adaptive bearing angle is adjusted. The spherical self-adaptive bearing mounting component and the beam maintain a certain angle as a whole, and it does not change with the angle of the dynamic triangle tracking support structure. The materials of spherical adaptive bearings are metal materials such as cast iron, cast steel and cast aluminum.

14a and 14b are provided with two strip-shaped openings, the positions correspond to the two annular openings on the support frame of the bearing, and the bearing is fixed to the column by screws. The opening on the column is strip-shaped, which is convenient for adjusting the height of the fixed ball valve. Two ring-shaped openings, the lower opening is larger than the upper opening, to adapt to the installation deflection caused by the respective reasons on site.

Figures 14a and 14b have two openings on the column, but one opening or multiple openings can also be provided. The support frame of the ellipsoidal adaptive bearing is also provided with an annular hole or multiple annular holes and openings on the column. Corresponding to adapt to the installation deflection caused by the respective reasons on site.

The photovoltaic tracking support with a dynamic triangular tracking support structure of this patent includes three tracking supports of single-beam photovoltaic tracking support, double-beam photovoltaic tracking support, and three-beam photovoltaic tracking support.

This patent does not limit the length of the main beam. This patent is applicable on a large scale. When the main beam is longer, support columns, cross beams, telescopic support structures, linkage shafts, etc. can be added as needed.

The beneficial effects of this patent

1) The lead screw is a retractable structure. While using the lead screw to adjust the angle of the bracket and track the sun daily, the lead screw can form a stable dynamic triangular structure with the column and beam to provide a good performance for the module when the photovoltaic module is tracking and running. stability.

2) The combination of the internal cross-shaft transmission and the lead screw of the dynamic triangular tracking support structure, and the use of a drive shaft to connect multiple dynamic triangular tracking support structures together in a row of components can achieve only one drive motor, one row The effect of the components can be synchronized and follow-up, saving the cost of driving.

3) The structure is simple and the cost is low. Because the dynamic triangle support structure is stable, there is no need to design the support column into a more stable structure such as A-shaped or inverted T-shaped. Only one column can be used to obtain stable support, and because of the dynamic triangle The supporting structure also correspondingly shares the pressure borne by the column. Compared with the traditional single column, the single column of this patent has lower requirements on the bearing capacity of the single column, further saves the use of materials, is easy to transport and Installation and maintenance.

4) The drive and transmission are located under the battery board, and are protected by the battery board itself from rain, snow or direct sunlight. At the same time, it improves the passage under the tracking system, which can be adapted to a larger range of complex terrain (such as agricultural light complementation). Compared with other systems, the drive system has no risk of flooding.

5) Compared with the traditional method of bolt connection between the rotating beam and the bearing and the bearing box, the beam cannot adapt well to the undulating ground. The spherical adaptive bearing and the dynamic triangular tracking support structure can be used better. It adapts to ground ups and downs, improves the adaptability of the photovoltaic tracking bracket, makes installation and debugging more convenient, and has a longer life.

Claims

A solar single-axis tracking support containing a dynamic triangular tracking support structure. It includes a main beam, several beams, a supporting structure, and a plurality of single uprights. The main beam and several beams are fastened together, one beam and one beam The column is corresponding, characterized in that the supporting structure is a telescopic structure, one end is connected with the beam, the other end is connected with the column, the beam and the corresponding single column are connected together by the supporting structure to form a dynamic triangular tracking support structure, the center of the beam It can be rotated around the connecting shaft of the column. The support structure transmits rotational power through the drive shaft. The power of the drive shaft comes from the motor, reduction box or linkage shaft. The support structure generates linear telescopic motion due to the drive of the drive shaft, thereby pushing the beam around the column. Rotate to achieve the function of tracking the trajectory of the sun.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 1, wherein the main beam can be one or two.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 2, characterized in that it further includes a secondary beam.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to any one of claims 1 to 3, further comprising a linkage shaft, which is connected to the drive shaft of each support structure. When the motor drives a support structure When the drive shaft rotates, the linkage shaft rotates synchronously, and drives the drive shafts of other supporting structures to follow, so as to realize the synchronous telescopic movement of all supporting structures.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 4, wherein the linkage shaft is installed on the side far away from the ground and close to the main beam.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to any one of claims 1 to 3, wherein the solar dynamic triangular tracking support structure includes a transmission mechanism composed of a gear set and a lead screw. Drive the gear set and the lead screw to rotate, so as to realize the telescopic movement of the support structure.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 6, wherein the gear set includes a bevel gear set.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 6, characterized in that it further comprises a linkage shaft, the linkage shaft is connected to the drive shaft of each support structure, when the motor drives the drive shaft of a support structure to rotate When the time, the linkage shaft rotates synchronously, and drives the drive shafts of other supporting structures to follow, so as to realize the synchronous telescopic movement of all supporting structures.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 7 or 8, characterized in that the support structure further includes a guide inner sleeve and a guide outer sleeve. When the lead screw rotates, the guide inner sleeve can be driven in the guide The inside of the jacket stretches up and down.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to any one of claims 1 to 3, characterized in that the beam and a column are installed together to form a movable fulcrum through an ellipsoidal adaptive bearing, and the support rod connects the beam to One end of the pole and the bottom of the column are connected to form a triangle, and the length of the support rod changes to form a dynamic triangle.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 10, wherein the cross-sectional shape of the single column is C-shaped or I-shaped.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 10, wherein the ellipsoidal adaptive bearing mounting components include an ellipsoidal adaptive bearing core, a support rod, a support frame and bolts, and an ellipsoidal bearing core The center passes through the support rod structure, the bearing core and the support rod are firmly connected, the bearing core is mounted on the support frame, the bearing and the support frame are fixed on the column with bolts, and the two ends of the support rod passing through the bearing core pass through The openings at the corresponding positions on both sides of the beam.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 12, characterized in that the two ends of the bearing core are concave or convex ellipsoid surfaces, and the inner side of the upper end of the support frame forms a convex or concave ellipse. Spherical surface, the inner and outer convex or concave ellipsoid surface is matched with the inner concave or convex ellipsoidal bearing core surface.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 10, characterized in that at least one opening is provided on the pillar, and the support frame of the ellipsoidal adaptive bearing has at least one annular hole and an opening on the pillar Correspondingly, it is used to adjust the angle after fixed connection with the ellipsoidal adaptive bearing to adapt to the installation deflection caused by the respective reasons on the site.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 12, characterized in that there are two strip holes on the column, two ring holes at the lower end of the support frame, the two ring holes and the two on the column Corresponding to each strip hole.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 13, characterized in that both ends of the bearing core are spherical or concave spherical, and the upper end of the support frame forms a concave on the side close to the bearing core Or the convex spherical surface is matched with the convex or concave spherical surface at both ends of the ball bearing core.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 12, wherein the ellipsoidal or spherical bearing core and the support rod structure are integrally formed.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 15, characterized in that the support frame of the ellipsoidal adaptive bearing on the column has two annular holes, and the annular opening at the lower end is longer than the upper end. .
The solar single-axis tracking support comprising a dynamic triangular tracking support structure according to any one of claims 12, 13, 15, 17, 18, characterized in that it comprises an adjustment support 9 on which a plurality of equally spaced circular holes are arranged, The adjustment bracket is fixedly installed on the column, and the support rod structure passes through a circular hole of the adjustment bracket to adapt to the end position change of the support rod structure when the ellipsoidal adaptive bearing angle is adjusted.
The solar single-axis tracking support including a dynamic triangular tracking support structure according to claim 10, wherein the material of the ellipsoidal adaptive bearing is metal materials such as cast iron, cast steel, and cast aluminum.
A solar energy system comprising a solar single-axis tracking support with a dynamic triangular tracking support structure according to any one of the preceding claims 1-20, characterized in that it further includes a solar panel installed above the main beam.