Composite linkage single-shaft photovoltaic tracking support

Abstract

The utility model provides a composite linkage single shaft photovoltaic tracking support, relates to the photovoltaic tracking support field, and comprises a tracker main body, linear driving mechanisms and a rotation driving mechanism, the linear driving mechanisms are arranged on two sides of the rotation driving mechanism, free ends of the linear driving mechanisms and the rotation driving mechanism are fixedly connected with a driving rotating shaft, and the driving rotating shaft is fixedly connected with the linear driving mechanisms. The linear driving mechanism and the rotary driving mechanism are matched to drive the tracker body to rotate in a reciprocating mode, through structural optimization design, the torque of the tracker body can be evenly distributed, the bending resistance and torsion resistance of the driving rotating shaft are fully utilized, and the cost of the photovoltaic tracking support is reduced under the condition that it is guaranteed that the tracking angle of the driving rotating shaft is consistent; according to the utility model, the assembly is simple, the overall cost is low, the strength is high, and the popularization value is high.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic tracking brackets, in particular to a composite linkage single-axis photovoltaic tracking bracket. Background Art

[0002] As a green energy, the proportion of solar photovoltaic power generation in the energy structure is increasing year by year, and the cost per kilowatt-hour is directly related to whether photovoltaic power generation can be applied on a large scale. Brackets have always occupied a high cost in the construction of photovoltaic power stations, so the use of tracking brackets to reduce the cost per kilowatt-hour is a common method in the industry. However, the cost of existing tracking brackets is high, so how to reduce the cost of existing tracking brackets to reduce the cost per kilowatt-hour is a problem that tracking brackets need to solve. Since the cost of tracking brackets is mainly the steel structure part, reducing the weight of the steel structure part can achieve significant cost reduction of tracking brackets.

[0003] Traditional single-point drive requires the design of a relatively long bracket according to the number of single-bracket strings, the number of single-string components, and the specifications of the components. In order to meet the structural stability of the long bracket, it is usually necessary to increase the specifications of the rotating shaft and the number of columns to achieve structural stability, which leads to increased costs.

[0004] The rotary drive linkage tracker requires high precision for the spacing between each pair of drive columns, and it is inconvenient to install the main shaft and requires more manpower, which increases the construction cost. When designing the rotary drive linkage tracker, due to the structure of the rotary drive itself, the components need to avoid the rotary drive area. Therefore, gaps are often left on a single set of trackers, and the eddy currents generated by these gaps increase the wind pressure on the components around the gaps. Therefore, the more gaps between components, the more high wind pressure areas there are on a set of trackers. Strengthened purlins are often designed for high wind areas, which increases the cost of the tracker.

[0005] Compared with rotary drive linkage trackers, linear drive linkage trackers have lower costs, are easier to install, and have relatively lower requirements for the installation spacing of drive columns. However, there is no hard limit after the main shaft is installed. After the tracker has been running for a long time, the main shaft is prone to main shaft offset due to axial force. When used in complex terrain, the main shaft offset has an immeasurable impact on the structural stability of the tracker.

[0006] Therefore, how to reduce the cost of the volt-tracking bracket by optimizing the structural design while ensuring its smooth operation has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a composite-linked single-axis photovoltaic tracking bracket. This patent is not only simple to assemble and has low overall cost, but also has high strength and great promotion value.

[0008] The utility model is realized through the following technical solutions:

[0009] A composite linkage single-axis photovoltaic tracking bracket includes a tracker body, a linear drive mechanism and a rotary drive mechanism. The tracker body includes a drive shaft and support strips fixedly arranged on the drive shaft at equal intervals, the axis of the support strips is perpendicular to the axis of the drive shaft, the linear drive mechanism is arranged on both sides of the rotary drive mechanism, the free ends of the linear drive mechanism and the rotary drive mechanism are fixedly connected to the drive shaft, the linear drive mechanism and the rotary drive mechanism cooperate to drive the tracker body to reciprocate, the linear drive mechanism includes a column and a linear drive assembly, the fixed part of the linear drive assembly is fixedly connected to the column, and the free end of the linear drive assembly is fixedly connected to the drive shaft, the rotary drive mechanism includes a column and a rotary drive assembly, the fixed part of the rotary drive assembly is fixedly connected to the column, and the free end of the rotary drive assembly is fixedly connected to the drive shaft.

[0010] It can be seen that in the above technical solution, the free ends of the linear drive mechanism and the rotary drive mechanism are fixedly connected to the driving shaft, and the linear drive mechanism and the rotary drive mechanism cooperate to drive the tracker body to rotate reciprocatingly. Through structural optimization design, the torque of the tracker body can be evenly distributed, and the bending and torsion resistance of the driving shaft can be fully utilized. While ensuring the tracking angle of the driving shaft is consistent, the cost of the photovoltaic tracking bracket is reduced; this patent is not only simple to assemble and has low overall cost, but also has high strength and great promotion value.

[0011] According to the above technical solution, preferably, the linear drive assembly includes a transmission unit, two groups of force arm units and a linear drive unit, the two groups of force arm units are symmetrically arranged on both sides of the linear drive unit, the transmission unit is fixedly connected to the upper end of the column, the driving shaft passes through the transmission unit, and the driving shaft is rotatably connected to the column through the transmission unit, the two ends of the force arm unit are respectively hingedly connected to the driving shaft and the upper end of the linear drive unit, and the lower end of the linear drive unit is hingedly connected to the column.

[0012] It can be seen that in the above technical solution, since the driving shaft passes through the transmission unit and is rotatably connected to the column through the transmission unit, the linear driving unit can push the end of the force arm unit so that the force arm unit drives the driving shaft to rotate a set angle.

[0013] According to the above technical solution, preferably, the transmission unit includes a lower pile cap, an upper pile cap and two groups of upper and lower symmetrical hemispherical bearings, the lower pile cap is fixedly connected to the upper end of the column, the middle parts of the two groups of hemispherical bearings are provided with rectangular grooves adapted to the driving shaft, the inner sides of the lower pile cap and the upper pile cap are provided with spherical grooves adapted to the hemispherical bearings, and the lower pile cap and the upper pile cap cooperate to clamp and limit the two groups of hemispherical bearings.

[0014] It can be seen that in the above technical solution, the lower pile cap and the upper pile cap cooperate to clamp and limit the two sets of hemispherical bearings, and the two sets of hemispherical bearings cooperate to clamp and lock the driving shaft. Therefore, the staff can adjust the hemispherical bearings used to lock the driving shaft to the set angle and position according to the complex terrain conditions. Since the spherical slot is compatible with the hemispherical bearing, the hemispherical bearing has a degree of freedom far greater than the existing conventional transmission mechanism, thereby enabling the tracking photovoltaic bracket to adapt to complex terrain; in addition, this patent has the advantages of light weight, easy disassembly and assembly, and convenient maintenance through structural optimization. Even if the photovoltaic tracking bracket encounters geological collapse or settlement during later use, it can also achieve self-adjustment at a certain angle. Compared with traditional photovoltaic tracking brackets, it has the advantage of low failure rate and great promotion value.

[0015] According to the above technical solution, preferably, the lever arm unit includes an external lever arm, an internal lever arm, multiple groups of lever arm supports and multiple groups of connecting screws. The two ends of the lever arm supports are respectively spliced ​​and connected to the external lever arm and the internal lever arm. The connecting screws fix the external lever arm, the internal lever arm and the lever arm supports. The two groups of lever arm supports limit and lock the driving shaft.

[0016] It can be seen that in the above technical solution, the two ends of the lever arm support are respectively spliced ​​and connected with the external lever arm and the internal lever arm, the connecting screws fix the external lever arm, the internal lever arm and the lever arm support, and the two sets of lever arm support members limit and lock the driving shaft, which makes it easy for the staff to quickly complete the assembly, and the overall strength of the lever arm unit is high.

[0017] The beneficial effects of the utility model are:

[0018] (1) The free ends of the linear drive mechanism and the rotary drive mechanism of the present invention are fixedly connected to the drive shaft. The linear drive mechanism and the rotary drive mechanism cooperate to drive the tracker body to rotate back and forth. Through structural optimization design, the torque of the tracker body can be evenly distributed, and the bending and torsion resistance of the drive shaft can be fully utilized. Under the condition of ensuring the tracking angle of the drive shaft is consistent, the cost of the photovoltaic tracking bracket can be reduced;

[0019] (2) This patent is not only simple to assemble and has low overall cost, but also has high strength and great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An isometric structural diagram of an embodiment of the utility model is shown;

[0021] Figure 2 Another isometric structural schematic diagram of an embodiment of the utility model is shown;

[0022] Figure 3 A schematic diagram of a side view structure of an embodiment of the utility model is shown;

[0023] Figure 4 The isometric structural diagram of the transmission unit in the embodiment of the utility model is shown;

[0024] Figure 5 The isometric structural diagram of the force arm unit in the embodiment of the utility model is shown;

[0025] Description of reference numerals:

[0026] 1. Tracker body; 2. Linear drive mechanism; 3. Rotary drive mechanism; 4. Drive shaft; 5. Support strips; 6. Photovoltaic panels; 7. Columns; 8. Linear drive assembly; 9. Rotary drive assembly; 10. Transmission unit; 11. Lever unit; 12. Linear drive unit; 13. Lower pile cap; 14. Upper pile cap; 15. Hemispherical bearing; 16. External lever; 17. Internal lever; 18. Lever support; 19. Connecting screw. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and the best embodiment. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0028] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0029] As shown in the figure, the utility model provides a composite linkage single-axis photovoltaic tracking bracket, including a tracker body 1, a linear drive mechanism 2 and a rotary drive mechanism 3, wherein the tracker body 1 includes a driving shaft 4 and support strips 5 fixedly arranged on the driving shaft 4 at equal intervals, the axis of the support strips 5 is perpendicular to the axis of the driving shaft 4, and the support strips 5 are used to fix the photovoltaic panels 6, the linear drive mechanism 2 is arranged on both sides of the rotary drive mechanism 3, the free ends of the linear drive mechanism 2 and the rotary drive mechanism 3 are fixedly connected to the driving shaft 4, the linear drive mechanism 2 and the rotary drive mechanism 3 cooperate to drive the tracker body 1 to reciprocate, and the linear drive mechanism 2 includes a column 7 and a linear drive assembly 8, the fixed part of the linear drive assembly 8 is fixedly connected to the column 7, the free end of the linear drive assembly 8 is fixedly connected to the driving shaft 4, the rotary drive mechanism 3 includes a column 7 and a rotary drive assembly 9, and the rotary drive mechanism 3 includes a column 7 and a rotary drive assembly 9. The fixed part of the rotation drive assembly 9 is fixedly connected to the column 7, the free end of the rotation drive assembly 9 is fixedly connected to the driving shaft 4, the linear drive assembly 8 includes a transmission unit 10, two groups of arm units 11 and a linear drive unit 12, the two groups of arm units 11 are symmetrically arranged on both sides of the linear drive unit 12, the transmission unit 10 is fixedly connected to the upper end of the column 7, the driving shaft 4 passes through the transmission unit 10, and the driving shaft 4 is rotatably connected to the column 7 through the transmission unit 10, the two ends of the arm unit 11 are respectively hingedly connected to the driving shaft 4 and the upper end of the linear drive unit 12, and the lower end of the linear drive unit 12 is hingedly connected to the column 7. Since the driving shaft 4 passes through the transmission unit 10, and the driving shaft 4 is rotatably connected to the column 7 through the transmission unit 10, the linear drive unit 12 can push the end of the arm unit 11, so that the arm unit 11 drives the driving shaft 4 to rotate a set angle.

[0030] The free ends of the linear drive mechanism 2 and the rotary drive mechanism 3 of the present invention are fixedly connected to the drive shaft 4. The linear drive mechanism 2 and the rotary drive mechanism 3 cooperate to drive the tracker body 1 to rotate back and forth. Through structural optimization design, the torque of the tracker body 1 can be evenly distributed, and the anti-bending and anti-torsion performance of the drive shaft 4 can be fully utilized. While ensuring the tracking angle of the drive shaft 4 is consistent, the cost of the photovoltaic tracking bracket is reduced. The present invention is not only simple to assemble and has low overall cost, but also has high strength and great promotion value.

[0031] Optionally, in a possible implementation, the transmission unit 10 includes a lower pile cap 13, an upper pile cap 14 and two groups of upper and lower symmetrical hemispherical bearings 15, the lower pile cap 13 is fixedly connected to the upper end of the column 7, the middle parts of the two groups of hemispherical bearings 15 are provided with rectangular slots adapted to the drive shaft 4, the inner sides of the lower pile cap 13 and the upper pile cap 14 are provided with spherical slots adapted to the hemispherical bearings 15, the lower pile cap 13 and the upper pile cap 14 cooperate to clamp and limit the two groups of hemispherical bearings 15, so that the staff can lock the drive shaft 4 according to the complex terrain conditions. The hemispherical bearing 15 is adjusted to a set angle and position. Since the spherical slot is compatible with the hemispherical bearing 15, the hemispherical bearing 15 has a degree of freedom far greater than that of the existing conventional transmission mechanism, thereby enabling the tracking photovoltaic bracket to adapt to complex terrain. In addition, this patent has the advantages of light weight, easy disassembly and assembly, and convenient maintenance through structural optimization. Even if geological collapse or settlement occurs during the later use of the photovoltaic tracking bracket, it can achieve self-adjustment at a certain angle. Compared with traditional photovoltaic tracking brackets, it has the advantage of a low failure rate and has great promotion value.

[0032] Optionally, in a possible embodiment, the lever arm unit 11 includes an external lever arm 16, an internal lever arm 17, multiple groups of lever arm supports 18 and multiple groups of connecting screws 19. The two ends of the lever arm support 18 are respectively spliced ​​and connected to the external lever arm 16 and the internal lever arm 17. The connecting screws 19 fixedly connect the external lever arm 16, the internal lever arm 17 and the lever arm support 18. The two groups of lever arm supports 18 limit and lock the driving shaft 4, thereby facilitating the staff to quickly complete the assembly, and the overall strength of the lever arm unit 11 is high.

[0033] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A composite linkage single-axis photovoltaic tracking bracket, characterized in that: The invention comprises a tracker body, a linear drive mechanism and a rotary drive mechanism. The tracker body comprises a drive shaft and support strips fixedly arranged on the drive shaft at equal intervals. The axis of the support strips is perpendicular to the axis of the drive shaft. The linear drive mechanism is arranged on both sides of the rotary drive mechanism. The free ends of the linear drive mechanism and the rotary drive mechanism are fixedly connected to the drive shaft. The linear drive mechanism and the rotary drive mechanism cooperate to drive the tracker body to reciprocate. The linear drive mechanism comprises a column and a linear drive assembly. The fixed part of the linear drive assembly is fixedly connected to the column. The free end of the linear drive assembly is fixedly connected to the drive shaft. The rotary drive mechanism comprises a column and a rotary drive assembly. The fixed part of the rotary drive assembly is fixedly connected to the column. The free end of the rotary drive assembly is fixedly connected to the drive shaft.

2. A composite linkage single-axis photovoltaic tracking bracket according to claim 1, characterized in that: The linear drive assembly includes a transmission unit, two groups of force arm units and a linear drive unit. The two groups of force arm units are symmetrically arranged on both sides of the linear drive unit. The transmission unit is fixedly connected to the upper end of the column. The driving shaft passes through the transmission unit, and the driving shaft is rotatably connected to the column through the transmission unit. The two ends of the force arm unit are respectively hingedly connected to the driving shaft and the upper end of the linear drive unit, and the lower end of the linear drive unit is hingedly connected to the column.

3. A composite linkage single-axis photovoltaic tracking bracket according to claim 2, characterized in that: The transmission unit includes a lower pile cap, an upper pile cap and two groups of upper and lower symmetrical hemispherical bearings. The lower pile cap is fixedly connected to the upper end of the column. The middle parts of the two groups of hemispherical bearings are provided with rectangular grooves adapted to the driving shaft. The inner sides of the lower pile cap and the upper pile cap are provided with spherical grooves adapted to the hemispherical bearings. The lower pile cap and the upper pile cap cooperate to clamp and limit the two groups of hemispherical bearings.

4. The composite linkage single-axis photovoltaic tracking bracket according to claim 3, characterized in that: The lever arm unit includes an external lever arm, an internal lever arm, multiple sets of lever arm supports and multiple sets of connecting screws. The two ends of the lever arm support are respectively spliced ​​and connected to the external lever arm and the internal lever arm. The connecting screws fixedly connect the external lever arm, the internal lever arm and the lever arm support. The two sets of lever arm supports limit and lock the driving shaft.

Images