A multi-point parallel synchronous drive solar tracking system

Abstract

The invention discloses a multi-point parallel synchronous drive solar tracking system, comprising a multi-point parallel synchronous drive device arranged on a main shaft, the device comprising a driving mechanism and several levels of driven mechanisms; the first power output end of the driving mechanism is connected to the main shaft to output rotational power to the main shaft; the second power output end of the driving mechanism adjusts the output direction of the second power output end to the bottom of the main shaft and parallel to the main shaft axis through a power guide mechanism I; several levels of driven mechanisms are arranged at intervals along the main shaft, the driving mechanism is connected to the power input end of the adjacent driven mechanism through the power output end of the power guide mechanism I along the axial transmission, and the adjacent two levels of driven mechanisms are connected along the axial transmission; the power output end of any level of driven mechanism is connected to the main shaft; thus, the driving mechanism realizes multi-point parallel synchronous drive of the main shaft through the power guide mechanism I and the driven mechanism transmission cooperation. The system can realize multi-point locking and significantly improve the wind resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic brackets, and in particular relates to a multi-point parallel synchronous drive solar tracking system. Background Art

[0002] At present, the most commonly used driving tracking system for photovoltaic brackets is the single-drive tracking system, which is driven and rotated by a single-point driving mechanism such as a reducer or a push rod, a linear actuator, etc., so that a free long cantilever structure is formed except for the driving point, which is easy to cause the free long cantilever to twist in strong winds. The longer the cantilever, the more serious the distortion superposition, causing the risk of damage to the components and brackets. At the same time, the resonance risk will also increase due to the low natural frequency. Specifically, in the single-axis tracking system, this driving mechanism is a fixed locking point except for the driving point under the action of strong winds, and the other points are all free moving parts. Since the distance from the driving point to the edge of the system in a single solar tracking system is generally more than ten meters or even tens of meters in length, it is easy to cause deformation, resonance and other risks under the action of gusts, so that the multi-point joint locking function in strong winds cannot be realized. The deformation and vibration of the system will cause damage to the system, and long-term operation will also cause risks such as hidden cracks on the solar components carried on it. Moreover, in actual applications, a single solar tracking system can only meet the maximum of 3 1500V photovoltaic strings, which is very inconvenient for power station design.

[0003] Therefore, those skilled in the art urgently need to provide a multi-point parallel synchronous drive solar tracking system that can achieve multi-point locking, significantly improve wind resistance, and greatly improve stability and reliability. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides a multi-point parallel synchronous drive solar tracking system that can achieve multi-point locking, significantly improve wind resistance, and greatly improve stability and reliability. Compared with the single-point drive device commonly used in the current photovoltaic bracket drive tracking system, the system innovatively provides a multi-point parallel synchronous drive device, which converts the vertical input and output of the traditional worm gear into two-way synchronous output parallel to the worm gear output, effectively utilizing the large holding torque of the worm gear drive structure; and, combined with the mechanical drive shaft, multi-point parallel synchronous drive is realized to achieve stable locking under severe weather conditions. In addition, a power guiding mechanism is designed to transmit the power in the transmission direction of the worm gear to the mechanical drive shaft parallel to the main shaft, so as to better adapt to complex terrain with large slope changes.

[0005] In order to achieve the above-mentioned purpose, a multi-point parallel synchronous drive solar tracking system is provided. The present invention adopts the following technical solutions:

[0006] A multi-point parallel synchronous drive solar tracking system, comprising a main shaft and a plurality of columns for supporting the main shaft, wherein the main shaft is used to fix the solar module, and further comprising a multi-point parallel synchronous drive device arranged on the main shaft, wherein the multi-point parallel synchronous drive device comprises a driving mechanism and a plurality of levels of driven mechanisms connected in a transmission manner;

[0007] The first power output end of the driving mechanism is connected to the main shaft to output rotational power to the main shaft; the second power output end of the driving mechanism is connected to a power guiding mechanism I, and the power guiding mechanism I cooperates with the driving mechanism to adjust the power output direction of the second power output end to the bottom of the main shaft and parallel to the axis of the main shaft;

[0008] Several levels of driven mechanisms are arranged at intervals along the main shaft, and the driving mechanism is axially connected to the power input end of the adjacent driven mechanism through the power output end of the power guiding mechanism I, and the adjacent two levels of driven mechanisms are axially connected; the power output end of any level of driven mechanism is connected to the main shaft to output rotational power to the main shaft;

[0009] Thus, the driving mechanism realizes multi-point parallel synchronous driving rotation of the main shaft through the transmission cooperation between the power guiding mechanism I and the driven mechanism.

[0010] Preferably, the power output end of the power guiding mechanism I is axially connected to the power input end of the driven mechanism through a mechanical drive shaft; adjacent driven mechanisms are axially connected through a mechanical drive shaft; the mechanical drive shaft is arranged below the main shaft and parallel to the main shaft.

[0011] Furthermore, the driving mechanism includes a worm gear transmission unit I fixed on the column; the worm gear transmission unit I includes a worm I as a second power output end and a worm wheel I as a first power output end;

[0012] The worm wheel I is meshed with the upper side of the worm I, and the worm wheel I is sleeved on the main shaft and connected to the main shaft; the second power output end of the worm I is transmission connected to the power input end of the power guiding mechanism I, so that the driving mechanism is axially transmission connected to the power input end of the driven mechanism through the power guiding mechanism I and the mechanical driving shaft.

[0013] Furthermore, the driving mechanism also includes a driving motor, and the output shaft of the driving motor is drivingly connected to the worm I.

[0014] Furthermore, the power guiding mechanism I comprises a commutator I and a universal joint assembly I; the commutation input end of the commutator I is meshed and transmission-connected with the worm gear I, and the commutation output end of the commutator I is transmission-connected with the power input end of the universal joint assembly I;

[0015] A connecting shaft I is arranged at the power output end of the universal joint assembly I away from the commutator I, and the connecting shaft I is rotatably supported on the column through the support member I; and the power output end of the universal joint assembly I is connected to the mechanical drive shaft as a whole through the connecting shaft I.

[0016] Furthermore, the connecting shaft I is rotatably disposed on one end of the support member I, and the other end of the support member I is fixed on the column.

[0017] Furthermore, the commutator I adopts a T-type commutator or an L-type commutator.

[0018] Furthermore, a mounting seat is provided on the column, a housing with the worm gear transmission unit I built in is provided on the mounting seat, a commutator I is fixed on the housing at one end of the worm I, a motor is installed on the housing at the other end of the worm I, and the housing is fixed on the mounting seat. Furthermore, the power output end of the power guiding mechanism I is connected to the power input end of the adjacent driven mechanism along the axial transmission through the power guiding mechanism II after passing through the mechanical drive shaft.

[0019] Furthermore, the driven mechanism includes a worm gear transmission unit II; the worm gear transmission unit II includes a worm II as a power input end and a worm wheel II as a power output end;

[0020] The power guiding mechanism II is respectively connected to the mechanical driving shaft along the axial direction and to the worm II in transmission connection, and is used to transmit the rotational power of the mechanical driving shaft to the worm II; the worm wheel II is meshed with the upper side of the worm II; and the worm wheel II is sleeved on the main shaft.

[0021] Furthermore, the power guiding mechanism II includes a universal joint assembly II and a commutator II; the power input end of the universal joint assembly II is axially connected to the mechanical drive shaft; the power output end of the universal joint assembly II is connected to the reversing input end of the commutator II; the reversing output end of the commutator II is meshed and connected to the worm II gear;

[0022] A connecting shaft II is arranged at the power input end of the universal joint assembly II away from the commutator II, and the connecting shaft II is rotatably supported on the column through the support member II; and the power input end of the universal joint assembly II is connected to the mechanical drive shaft as a whole through the connecting shaft II.

[0023] Furthermore, the connecting shaft II is rotatably installed in one end of the supporting member II, and the other end of the supporting member II is fixed on the column.

[0024] Furthermore, the commutator II adopts a T-type commutator or an L-type commutator.

[0025] Furthermore, a mounting seat is provided on the column, a housing with the worm gear transmission unit II is provided on the mounting seat, a commutator II is fixed on the housing at one end of the worm II, a motor is installed on the housing at the other end of the worm II, and the housing is fixed on the mounting seat. Furthermore, the power guiding mechanism II includes a commutator III;

[0026] The power input end of the commutator III is connected to the mechanical drive shaft along the axial transmission, and the power output end is connected to the worm II gear meshing transmission.

[0027] Furthermore, the commutator III adopts a T-type commutator or an L-type commutator.

[0028] Furthermore, a worm gear housing II with mounting holes is fixed on both sides of the worm gear II along the length direction of the main shaft, and the main shaft is rotatably inserted into the mounting holes;

[0029] The top of the column is detachably connected to the column top seat; the column top seat is configured as a U-shaped bending part; the commutator III is placed in the column top seat and passes through the mounting holes of the vertical surfaces of the column and the column top seat in sequence along both sides perpendicular to the main axis direction for detachable connection;

[0030] The worm gear housing II is fixed on the horizontal plane of the column top seat.

[0031] Furthermore, the solar tracking systems are arranged in parallel in multiple rows in the east-west direction; the worm gears on the main shafts of two adjacent rows of solar tracking systems are respectively connected in transmission via the transmission shafts of the commutator.

[0032] Furthermore, the multi-point parallel synchronous drive device is configured as a plurality of groups connected in series, and the power guiding mechanism I and the power guiding mechanism II in the plurality of groups connected in series are connected end to end by a plurality of mechanical drive shafts for rotation, or are synchronously connected by a mechanical drive shaft; the number of the drive motors is configured as 1, and a controller is correspondingly provided, and the controller is electrically connected to the drive motor.

[0033] Preferably, the plurality of levels of driven mechanisms are evenly spaced and distributed on one side or both sides of the driving mechanism.

[0034] Preferably, the top of the column is fixedly connected to the column top seat, the main shaft is inserted into the bearing, the bearing is installed in the bearing seat ring, and the column top seat is fixedly connected to the bearing seat ring.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1) In the present invention, the driving mechanism and the driven mechanism cooperate with each other and are synchronously connected through a mechanical driving shaft. The driving mechanism divides the power into two parallel outputs along the axial direction to drive the adjacent driven mechanism. The driven mechanism also drives the adjacent driven mechanism to axially transmit, so that the power output ends of several levels of driven mechanisms act on the main shaft together to form a multi-point drive for synchronous rotation of the main shaft. Therefore, when strong winds come, the multiple driving points of the system of the present invention become multiple fixed locking points, which greatly reduces the jitter of the system, and greatly improves the stability and reliability, thereby achieving the dispersion of wind pressure and wind torque, and greatly improving the reliability and stability of the system. In addition, the two-way power of the driving mechanism is output in parallel along the main shaft direction, making the system easy to operate and maintain in the north-south direction.

[0037] 2) The drive mechanism and driven mechanism of the present invention both adopt worm gear transmission units, which convert the vertical input and output of the worm gear into two synchronous outputs parallel to the worm gear output, while retaining the large holding torque of the worm gear structure, and combining with the mechanical drive shaft to realize multi-point parallel synchronous drive, which can achieve the locking effect of the main shaft under strong wind conditions. In addition, the design of two-way parallel drive can effectively reduce the shielding of the transmission components to the solar panels, especially the bifacial panels, making the system design more flexible.

[0038] 3) The present invention can respectively set a power guiding mechanism between the mechanical drive shaft and the driving mechanism and the driven mechanism, so that the power in the transmission direction of the worm gear can be obliquely transmitted to the mechanical drive shaft parallel to the main shaft, thereby adapting to complex terrain with large slope changes.

[0039] 4) The multi-point parallel synchronous drive device in the present invention is arranged at intervals according to the size of the photovoltaic strings actually required to be carried, and the distance from each drive device to the edge of the corresponding load-bearing system does not exceed 10 meters. Therefore, in strong wind conditions, the deformation of the system is greatly reduced, the force is reduced, the torque is reduced, and the corresponding system cost is also greatly reduced.

[0040] 5) In the prior art, a single solar tracking system can only support up to 3 1500V photovoltaic strings, while the single system of the present invention can install 4 or even more 1500V photovoltaic strings (a single 1500V photovoltaic string generally has 30 components), which can ensure the stability of system operation in extreme weather, especially strong wind conditions. The single solar tracking system mentioned in the present invention refers to a system that can only support up to 3 1500V photovoltaic strings on a single-row main shaft.

[0041] 6) In the present invention, only one drive motor and controller are required for a single system, and all worm gears, power guide mechanism I, and power guide mechanism II are connected by a mechanical drive shaft and driven synchronously, thereby reducing installation, operation, and maintenance costs.

[0042] 7) The coordination of the driving mechanism and the driven mechanism of the present invention can also adapt to the driving of a multi-platform tracking system, that is, a multi-row tracking system in the east-west direction. The synchronous linkage of the multi-platform tracking system can be achieved by simply connecting the worm gears of two adjacent rows of tracking systems, thereby making the application scope of the technology of the present invention wider and more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the multi-point parallel synchronous drive solar tracking system of the present invention.

[0044] Figure 2 for Figure 1 A magnified view of the structure at center.

[0045] Figure 3 for Figure 1 A magnified view of the structure at point B.

[0046] Figure 4 for Figure 2 Enlarged view of the structure of commutator I.

[0047] Figure 5 for Figure 3 Enlarged view of the structure of commutator II.

[0048] Figure 6 This is an enlarged view of the structure of the column that provides independent support for the main shaft.

[0049] The meanings of the symbols in the figure are as follows:

[0050] 1-driving mechanism, 10-worm gear housing Ⅰ, 11-commutator Ⅰ, 12-universal joint assembly Ⅰ, 13-connecting shaft Ⅰ, 14-support Ⅰ;

[0051] 2-driven mechanism; 20-worm gear housing II, 21-commutator II, 22-universal joint assembly II, 23-connecting shaft II, 24-support member II;

[0052] 3-spindle, 30-bearing race;

[0053] 4- Mechanical drive shaft;

[0054] 5-column, 50-mounting seat, 51-fixing seat, 52-column top seat, C-upper and lower adjustable row holes III, D-fixing hole III;

[0055] 6-Solar panels. DETAILED DESCRIPTION

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0057] In order to simplify the drawings, each figure only schematically shows the parts related to the present invention, which do not represent the actual structure of the product.

[0058] Example 1

[0059] like Figures 1 to 3 As shown, this embodiment is a multi-point parallel synchronous drive solar tracking system, including a main shaft 3 and a plurality of columns 5 for supporting the main shaft 3, the main shaft 3 is used to fix a solar module 6, and also includes a multi-point parallel synchronous drive device arranged on the main shaft 3, the multi-point parallel synchronous drive device includes a driving mechanism 1 and a plurality of levels of driven mechanisms 2 connected in a transmission manner;

[0060] The first power output end of the driving mechanism 1 is connected to the main shaft 3 to output rotational power to the main shaft 3; the second power output end of the driving mechanism 1 is connected to a power guiding mechanism I, and the power guiding mechanism I cooperates with the driving mechanism 1 to adjust the power output direction of the second power output end to the bottom of the main shaft 3 and parallel to the axis of the main shaft 3;

[0061] Several levels of driven mechanisms 2 are arranged at intervals along the main shaft 3, and the driving mechanism 1 is axially connected to the power input end of the adjacent driven mechanism 2 through the power output end of the power guiding mechanism I, and the adjacent two levels of driven mechanisms 2 are axially connected; the power output end of any level of driven mechanism 2 is connected to the main shaft 3 to output rotational power to the main shaft 3;

[0062] Thus, the driving mechanism 1 realizes multi-point parallel synchronous driving rotation of the main shaft 3 through the transmission cooperation between the power guiding mechanism I and the driven mechanism 2.

[0063] In this embodiment, the driving mechanism 1 outputs the power axially to the main shaft 3 through the first power output end, and can transmit the power in the inclined direction to the bottom of the main shaft and parallel to the main shaft through the power guide mechanism I through the second power output end, and then output it to the adjacent driven mechanism 2, which can correspondingly drive the adjacent driven mechanism 2 to axially transmit, so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a multi-point drive for the main shaft 3 to rotate synchronously. Applying this technical solution, when strong winds come, the multiple driving points of the system become multiple fixed locking points, which greatly reduces the jitter of the system, and greatly improves the stability and reliability, so that the wind pressure and wind torque can be dispersed, and the reliability and stability of the system can be greatly improved. In addition, the two-way power of the driving mechanism is output in parallel along the main shaft direction, making the operation and maintenance of the system convenient in the north-south direction. In addition, the multi-point parallel synchronous drive device is set according to the size interval of the photovoltaic strings actually required to be carried, and the distance from each drive device to the edge of the corresponding load-bearing system does not exceed 10 meters. Therefore, in strong wind conditions, the deformation of the system is greatly reduced, the force is reduced, the torque is reduced, and the corresponding system cost is also greatly reduced.

[0064] As a preferred embodiment, the driven mechanisms 2 are evenly spaced and distributed on one side or both sides of the driving mechanism 1, thereby further improving the stability and reliability of the multi-point parallel synchronous driving of the main shaft 3.

[0065] In practical applications, the multi-point parallel synchronous drive device includes a driving mechanism 1 and a second-level driven mechanism 2 connected by transmission, and the second-level driven mechanism 2 is symmetrically arranged on both sides of the driving mechanism 1. Each system is driven by a multi-point parallel synchronous drive device, which can ensure the stability of system operation under extreme weather conditions (especially strong winds); a single system can install 4 or even more 1500V photovoltaic strings (a single 1500V photovoltaic string generally has 30 components).

[0066] Example 2

[0067] like Figures 1 to 3 As shown, this embodiment is a multi-point parallel synchronous drive solar tracking system, including a main shaft 3 and a plurality of columns 5 for supporting the main shaft 3, the main shaft 3 is used to fix a solar module 6, and also includes a multi-point parallel synchronous drive device arranged on the main shaft 3, the multi-point parallel synchronous drive device includes a driving mechanism 1 and a plurality of levels of driven mechanisms 2 connected in a transmission manner;

[0068] The first power output end of the driving mechanism 1 is connected to the main shaft 3 to output rotational power to the main shaft 3; the second power output end of the driving mechanism 1 is connected to a power guiding mechanism I, and the power guiding mechanism I cooperates with the driving mechanism 1 to adjust the power output direction of the second power output end to the bottom of the main shaft 3 and parallel to the axis of the main shaft 3;

[0069] The driven mechanisms 2 of several levels are arranged at intervals along the main shaft 3, and the driving mechanism 1 is connected to the power input end of the adjacent driven mechanism 2 along the axial transmission through the power output end of the power guiding mechanism I. Specifically, the power output end of the power guiding mechanism I is connected to the power input end of the driven mechanism along the axial transmission through the mechanical driving shaft 4; and the adjacent driven mechanisms 2 are connected to each other along the axial transmission through the mechanical driving shaft 4; the mechanical driving shaft 4 is arranged below the main shaft 3 and parallel to the main shaft 3; the power output end of the driven mechanism 2 of any level is connected to the main shaft 3 to output rotational power to the main shaft 3;

[0070] Thus, the driving mechanism 1 realizes multi-point parallel synchronous driving rotation of the main shaft 3 through the transmission cooperation between the power guiding mechanism I and the driven mechanism 2.

[0071] In this embodiment, the synchronous transmission between the driving mechanism 1 and the driven mechanism 2 is realized through the mechanical driving shaft 4. Since two parallel synchronous outputs of the mechanical driving shaft 4 and the main shaft 3 are designed, the mechanical driving shaft 4 is arranged in parallel in the space between the bottom of the main shaft 3 and the top of the column 5, so that the space is fully utilized. For the shielding of the double-sided components, it is only necessary to avoid the main shaft, which makes the system layout more convenient.

[0072] As a preferred embodiment, the drive mechanism 1 includes a worm gear transmission unit I fixed on the column 5; the worm gear transmission unit I includes a worm I as the second power output end and a worm wheel I as the first power output end; the worm wheel I is meshed with the upper side of the worm I, and the worm wheel I is sleeved on the main shaft to output rotational power to the main shaft 3; the second power output end of the worm I is transmission-connected with the power input end of the power guide mechanism I, so that the drive mechanism 1 is axially transmission-connected with the power input end of the driven mechanism through the power guide mechanism I and the mechanical drive shaft. More preferably, the drive mechanism 1 also includes a drive motor, and the output shaft of the drive motor is drivingly connected with the worm I.

[0073] This example provides a preferred setting form of the drive mechanism 1, in which the drive mechanism 1 outputs the power axially to the main shaft 3 and the mechanical drive shaft 4 through the worm gear Ⅰ and the power guide mechanism Ⅰ, respectively. The mechanical drive shaft 4 drives the adjacent driven mechanism 2, and then drives the adjacent driven mechanism 2 axially accordingly, so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a multi-point drive for the main shaft 3 to rotate synchronously. In the traditional worm gear transmission mechanism, the input shaft and the output shaft are in a vertical relationship. In this embodiment, the vertical input and output of the worm gear are converted into two synchronous outputs parallel to the worm gear output through the power guide mechanism Ⅰ, while retaining the large holding torque of the worm gear structure, and the locking effect on the main shaft 3 can be achieved under strong wind conditions. Therefore, this embodiment uses the large torque of the worm gear transmission to output the power in parallel along two paths, making the multi-point parallel synchronous drive more stable.

[0074] More preferably, the power guiding mechanism I comprises a commutator I11 and a universal joint assembly I12; the commutation input end of the commutator I11 is meshed and transmission-connected with the worm I gear, and the commutation output end of the commutator I11 is transmission-connected with the power input end of the universal joint assembly I12;

[0075] A connecting shaft Ⅰ13 is provided at the power output end of the universal joint assembly Ⅰ12 away from the commutator Ⅰ11, and the connecting shaft Ⅰ13 is rotatably supported on the column 5 through a support member Ⅰ14; and the power output end of the universal joint assembly Ⅰ12 is connected to the mechanical drive shaft 4 as a whole through the connecting shaft 13.

[0076] In this preferred example, the commutator Ⅰ11 is connected to the worm Ⅰ, so the commutator Ⅰ11 is located outside the drive mechanism 1, and the mechanical drive shaft 4 is located below the main shaft 3 and parallel to the main shaft 3, and the direction is not in the same vertical plane. The power output direction of the drive mechanism 1 can be guided by the power guide mechanism Ⅰ to be obliquely transmitted to the mechanical drive shaft 4 parallel to the main shaft 3, so that the multi-point parallel synchronous drive of the main shaft 3 can be realized. This makes the structural arrangement more flexible, and the power transmission direction can be adjusted by the power guide mechanism regardless of the terrain it is suitable for. Specifically, the connecting shaft Ⅰ13 in the power guide mechanism Ⅰ can be rotatably penetrated at one end of the support member Ⅰ14, and the other end of the support member Ⅰ14 is fixed on the column 5, so that the commutator Ⅰ11 and the universal joint Ⅰ12 are supported by the support member Ⅰ14, and the power transmission direction is positioned, which can ensure a steady parallel drive relationship. Among them, the universal joint assembly Ⅰ12 adopts a universal coupling.

[0077] Preferably, the commutator I is a T-type commutator or an L-type commutator. Figure 4 As shown, if the commutator Ⅰ11 in the driving mechanism 1 adopts a T-type commutator, the power can be transmitted to the mechanical drive shafts 4 on both sides; if an L-type commutator is adopted, the power can be transmitted to the mechanical drive shaft 4 on one side; and then the commutator Ⅰ can synchronously drive the driven mechanisms on both sides or one side to realize multi-point synchronous drive rotation of the main shaft.

[0078] As another preferred embodiment, a mounting seat 50 is provided on the column 5, and a housing Ⅰ10 with the worm gear transmission unit Ⅰ built in is provided on the mounting seat 50, a commutator Ⅰ11 is fixed on the housing Ⅰ10 at one end of the worm Ⅰ, and a motor is installed on the housing Ⅰ10 at the other end of the worm Ⅰ, and the housing Ⅰ10 is fixed on the mounting seat 50.

[0079] The worm wheel I in the worm gear transmission unit I of this preferred example has the main shaft 3 rotatably sleeved therein, and is connected and fixed to the column 5 through the housing I 10, so that when the worm wheel I rotates, the main shaft 3 is correspondingly driven to track the rotation at a fixed point; the main shaft 3 and the driving mechanism 1 are fixedly supported by the column 5. In addition, the housing I 10 of the worm gear transmission unit I is fixed by the mounting seat 50, and the structural arrangement is convenient and compact.

[0080] As another more preferred embodiment, the power output end of the power guiding mechanism I passes through the mechanical drive shaft 4 and is axially connected to the power input end of the adjacent driven mechanism 2 through the power guiding mechanism II.

[0081] Thus, the power transmitted from the drive mechanism 1 to the mechanical drive shaft 4 can output the power from the bottom of the main shaft 3 and parallel to the main shaft 3 obliquely to the adjacent driven mechanism 2 through the power guiding mechanism II, and the driven mechanism 2 can correspondingly drive the adjacent driven mechanism 2 axial transmission (it should be noted that it can continue to pass through the power guiding mechanism), so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a multi-point drive of the main shaft 3 for synchronous rotation.

[0082] More preferably, the driven mechanism 2 includes a worm gear transmission unit II; the worm gear transmission unit II includes a worm II as a power input end and a worm wheel II as a power output end;

[0083] The power guiding mechanism II is axially connected to the mechanical drive shaft 4 and transmission connected to the worm II, respectively, for transmitting the rotational power of the mechanical drive shaft 4 to the worm II; the worm wheel II is meshed with the upper side of the worm II; and the worm wheel II is sleeved on the main shaft 3.

[0084] This preferred example provides a preferred setting form of the driven mechanism 2, which also utilizes the worm gear transmission structure. The driving mechanism 1 outputs the power axially to the main shaft 3 and the mechanical drive shaft 4 through the worm wheel I and the power guide mechanism I respectively. The mechanical drive shaft 4 transmits the axial rotation to the power guide mechanism II and then to the worm II, so that the adjacent driven mechanism 2 is driven by the mechanical drive shaft 4 to synchronously drive the axial direction, so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a multi-point drive to synchronously rotate the main shaft 3. In practical applications, the multi-point parallel synchronous drive device includes a driving mechanism 4 and a two-level driven mechanism 5 connected by transmission, and the two-level driven mechanism 2 is symmetrically arranged on both sides of the driving mechanism 1. Each system is driven by a multi-point parallel synchronous drive device, which can ensure the stability of the system operation under extreme weather conditions (especially strong wind conditions); a single system can install 4 or even more 1500V photovoltaic strings (a single 1500V photovoltaic string generally has 30 components).

[0085] In the above embodiment, the power guidance mechanism II can be arranged in various forms according to different application scenarios:

[0086] As an implementation mode, the power guiding mechanism II includes a universal joint assembly II 22 and a commutator II 21; the power input end of the universal joint assembly II 22 is axially connected to the mechanical drive shaft 4; the power output end of the universal joint assembly II 22 is connected to the reversing input end of the commutator II 21; the reversing output end of the commutator II 21 is meshed and connected to the worm II gear;

[0087] The power input end of the universal joint assembly II 22 is provided with a connecting shaft II 23 away from the commutator II 21, and the connecting shaft II 23 is rotatably supported on the column 5 through the support member II 24; and the power input end of the universal joint assembly II 22 is connected to the mechanical drive shaft 4 as a whole through the connecting shaft II 23.

[0088] In this preferred example, commutator II 21 is connected to worm II, so commutator II 21 is located outside the drive mechanism 1, and the mechanical drive shaft 4 is located below the main shaft 3 and parallel to the main shaft 3, and the directions are not in the same vertical plane. The power output direction of the mechanical drive shaft can be guided by the power guide mechanism II to be obliquely transmitted to the commutator II 21, and then transmitted to the worm gear unit II, so that multi-point parallel synchronous drive of the main shaft 3 can be achieved. This makes the structural arrangement more flexible, and the power transmission direction can be adjusted by the power guide mechanism II regardless of the terrain it is suitable for. Since the mechanical drive shaft 4 is located below the main shaft 3 and parallel to the main shaft 3, it only needs to avoid the main shaft 3 for the obstruction of the double-sided components, and the system design is more flexible. Among them, the universal joint assembly II 22 adopts a universal coupling.

[0089] Specifically, the connecting shaft II23 in the power guiding mechanism II is rotatably arranged on one end of the support member II24, and the other end of the support member II24 is fixed on the column 5, so that the commutator II21 and the universal joint II22 are supported by the support member II24, and the power transmission direction is positioned, which can ensure a steady parallel driving relationship. Therefore, this embodiment is particularly suitable for situations with complex terrain and large slope changes. In addition, when the driven mechanism is set as a multi-stage series, this setting form enables the power guiding mechanisms II in the multi-stage series driven mechanism 2 to be connected by multiple mechanical drive shafts 4 for head-to-tail rotation.

[0090] Preferably, the commutator II 21 is a T-type commutator or an L-type commutator. Figure 5As shown, if the commutator II 21 in the driven mechanism 2 adopts an L-type commutator, the driven mechanism 2 can receive the power transmitted from the driving mechanism 1 and the mechanical driving shaft 4, and accordingly enable the worm gear unit II to synchronously drive the main shaft 3; and if a T-type commutator is adopted, the driven mechanism 2 can continue to drive the adjacent driven mechanism 2 synchronously.

[0091] More preferably, a mounting seat 50 is provided on the column 5, and the housing 20 with the worm gear transmission unit II built in is arranged on the mounting seat 50, the commutator II21 is fixed on the housing II20 at one end of the worm, and the drive motor is installed on the housing II20 at the other end of the worm II, and the housing II20 is fixed on the mounting seat 50.

[0092] The worm wheel II in the worm gear transmission unit II of this preferred example has the main shaft 3 rotatably sleeved therein, and is connected and fixed to the column 5 through the housing II 20, so that when the worm wheel II rotates, the main shaft 3 is correspondingly driven to track and rotate at a fixed point; the main shaft 3 and the driven mechanism 2 are fixedly supported by the column 5. In addition, the housing II 20 of the worm gear transmission unit II is fixed by the mounting seat 51, and the structural arrangement is convenient and compact.

[0093] As another embodiment, the power guiding mechanism II includes a commutator III; the power input end of the commutator III is axially connected to the mechanical drive shaft 4, and the power output end is meshingly connected to the worm II gear.

[0094] Preferably, the commutator III adopts a T-type commutator or an L-type commutator. When the commutator III in the driven mechanism adopts an L-type commutator, it can receive the power transmitted from the driving mechanism 1 and the mechanical driving shaft 4, and accordingly make the worm gear unit II synchronously drive the main shaft 3; and when a T-type commutator is adopted, it can continue to drive the adjacent driven mechanism 2 synchronously on the basis of receiving power on the above basis.

[0095] In some application cases, according to the change of terrain slope, after receiving the power of the mechanical drive shaft 4, it is not necessary to adjust the direction of the tilted transmission power, and the axial power can be directly converted into vertical power through the commutator III (such as an L-type commutator) and transmitted to the worm gear transmission unit II. Specifically, in this case, the arrangement structure of the commutator III is as follows: the worm gear transmission unit II is built into the housing III; the top of the column 5 is detachably connected to the column top seat 52; the column top seat 52 is set as a U-shaped bending part; the commutator III is placed in the column top seat 52 and is detachably connected to the mounting holes of the vertical surface of the column 5 and the column top seat 52 in sequence along both sides perpendicular to the direction of the main axis 3; the housing III is fixed on the horizontal surface of the column top seat 52. More specifically, a plurality of rows of adjustment holes II are arranged on the top of the column 5, the column top seat is set as a U-shaped bending part, and a pair of fixing holes II are arranged oppositely on the two vertical surfaces of the column top seat; the commutator III is placed in the column top seat 52 and passes through the adjustment holes II and the fixing holes II in sequence to achieve a height-adjustable detachable connection with the column 5 and the column top seat 52. Thus, a fixed connection mode between the worm gear transmission unit II in the driven mechanism 2 and the column 5, and a matching connection form between the mechanical drive shaft 4 and the worm gear transmission unit II are provided, the structure is compactly arranged, and the fixed support of the main shaft 3 and the driven mechanism 2 is achieved through the column, so that the mechanical drive shaft 4 rotates steadily and maintains a constant parallel driving relationship with the main shaft 3. In addition, when the driven mechanism is set as a multi-stage series, this setting form enables the power guide mechanisms II in the multi-stage series driven mechanism 2 to be synchronously connected by the same longer mechanical drive shaft 4.

[0096] More preferably, the multi-point parallel synchronous drive device is set as a plurality of groups connected in series, and the power guiding mechanism I and the power guiding mechanism II in the plurality of groups connected in series are connected by a plurality of mechanical drive shafts, which can adapt to different terrains. Alternatively, according to the terrain conditions, it can also be set to be synchronously connected through a mechanical drive shaft; the number of the drive motors is set to 1, and a controller is correspondingly provided, and the controller is electrically connected to the drive motor. Through this preferred solution, only one drive motor and a controller are required for a single system (the drive motor and the controller can be supported and fixed by the column 5), the controller adopts a single chip microcomputer, and the single chip microcomputer is electrically connected to the drive motor, and all the power guiding mechanisms I and the power guiding mechanisms II (including the power guiding mechanism I and the adjacent power guiding mechanisms II, and the adjacent power guiding mechanisms II) in the plurality of groups of multi-point parallel synchronous drive devices are connected by a mechanical drive shaft, or the power guiding mechanism I and the power guiding mechanism II can also be connected by a plurality of mechanical drive shafts, and the plurality of mechanical drive shafts are connected by a universal joint, which can adapt to different terrains, drive synchronously, and reduce the installation, operation and maintenance costs. In addition, the electrical connection setting of the drive motor and the controller mentioned above is a conventional technical means in this field. The model of the single-chip microcomputer is the STM32E103 series, or other commercially available models can also be selected. It only needs to be able to realize the function of sending command signals to the drive motor, and no further detailed description will be given here.

[0097] More preferably, the solar tracking system is arranged in parallel in multiple rows in the east-west direction; the worms on the main shafts 3 of two adjacent rows of solar tracking systems are respectively connected by a corresponding transmission shaft of the commutator. Thus, the multi-row synchronous linkage of the photovoltaic tracking system is realized. Specifically, the commutator I in the first row of main shafts 3 is connected by a one-to-one transmission with the commutator I in the second row and up to the nth row of main shafts, and the several levels of commutator II in the first row of main shafts are connected by a one-to-one transmission with the several levels of commutator II in the second row and up to the nth row of main shafts 3. In practical applications, the transmission connection is realized by the transmission shaft of the commutator, thereby realizing multi-row synchronous linkage.

[0098] Therefore, the cooperation form of the driving mechanism 1 and the driven mechanism 2 of the present invention can also adapt to the multi-platform tracking system (that is, the drive of the east-west multi-row tracking system). By connecting the worm gears of two adjacent rows of solar tracking systems, the synchronous linkage of the multi-platform tracking system can be achieved, making the application scope of the technology of the present invention wider and more applicable.

[0099] Example 3

[0100] This embodiment is based on the embodiment 1 or 2. It should be noted that in addition to the column 5 that supports the main shaft 3, the driving mechanism 1 and the driven mechanism 2 synchronously, other columns 5 that support the main shaft alone can also be provided. Figure 6 As shown, the top of the column 5 is fixedly connected to the column top seat 52; the main shaft 3 is inserted into the bearing, and the bearing is installed in the bearing seat ring 30; the column top seat 52 is fixedly connected to the bearing seat ring 30 to directly support the main shaft 3. In actual application, the top of the column 5 is provided with an upper and lower adjustable row of holes IIIC, the column top seat 51 is provided as a U-shaped bending part, and a set of fixing holes are provided on the two vertical surfaces of the column top seat 51.

[0101] The relative height adjustment of the column 5 and the column top seat 52 can be achieved by the cooperation of the upper and lower adjustable holes ⅢC and the set of fixed holes ⅢD. In addition, Figure 6 A fixing seat 50 is also provided at the top of the column 5, in which the mechanical drive shaft 4 can rotate, so as to provide a certain external support and limit for the mechanical drive shaft 4, and further ensure a stable parallel driving relationship.

[0102] Therefore, the column 2 in the present invention can be applied to different fixing scenarios to support and fix the main shaft 1, the driving mechanism 4, and the driven mechanism 5, and is connected to the foundation or directly serves as the foundation to support the main shaft 1. In practical applications, the bearing is preferably a polymer bearing.

[0103] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A multi-point parallel synchronous drive solar tracking system, comprising a main shaft and a plurality of columns for supporting the main shaft, wherein the main shaft is used to fix a solar module, and characterized in that: It also includes a multi-point parallel synchronous driving device arranged on the main shaft, and the multi-point parallel synchronous driving device includes a driving mechanism and a plurality of levels of driven mechanisms connected in transmission; The first power output end of the driving mechanism is connected to the main shaft to output rotational power to the main shaft; the second power output end of the driving mechanism is connected to a power guiding mechanism I, and the power guiding mechanism I cooperates with the driving mechanism to adjust the power output direction of the second power output end to the bottom of the main shaft and parallel to the axis of the main shaft; The power output end of the power guiding mechanism I is axially connected to the power input end of the driven mechanism via a mechanical drive shaft; adjacent driven mechanisms are axially connected via a mechanical drive shaft; The mechanical drive shaft is arranged below the main shaft and parallel to the main shaft; The power guiding mechanism I comprises a commutator I and a universal joint assembly I; the commutation input end of the commutator I is transmission-connected to the second power output end, the commutation output end of the commutator I is transmission-connected to the power input end of the universal joint assembly I, and the power output end of the universal joint assembly I is connected to the mechanical drive shaft as a whole; Several levels of driven mechanisms are arranged at intervals along the main shaft, and the driving mechanism is axially connected to the power input end of the adjacent driven mechanism through the power output end of the power guiding mechanism I, and the adjacent two levels of driven mechanisms are axially connected; the power output end of any level of driven mechanism is connected to the main shaft to output rotational power to the main shaft; Thus, the driving mechanism realizes multi-point parallel synchronous driving rotation of the main shaft through the transmission cooperation between the power guiding mechanism I and the driven mechanism.

2. The multi-point parallel synchronous drive solar tracking system according to claim 1, characterized in that: The driving mechanism comprises a worm gear transmission unit I fixed on the column; the worm gear transmission unit I comprises a worm I as a second power output end and a worm wheel I as a first power output end; The worm wheel I is meshed with the upper side of the worm I, and the worm wheel I is sleeved on the main shaft and connected to the main shaft; the second power output end of the worm I is transmission-connected with the power input end of the power guide mechanism I, so that the driving mechanism is axially transmission-connected with the power input end of the driven mechanism through the power guide mechanism I and the mechanical driving shaft; The driving mechanism also includes a driving motor, and the output shaft of the driving motor is drivingly connected to the worm I.

3. The multi-point parallel synchronous drive solar tracking system according to claim 2, characterized in that: The commutation input end of the commutator I is meshingly connected with the worm I gear; A connecting shaft I is arranged at the power output end of the universal joint assembly I away from the commutator I, and the connecting shaft I is rotatably supported on the column through the support member I; and the power output end of the universal joint assembly I is connected to the mechanical drive shaft as a whole through the connecting shaft I.

4. The multi-point parallel synchronous drive solar tracking system according to claim 2, characterized in that: A mounting seat is arranged on the column, a housing with the worm gear transmission unit I built in is arranged on the mounting seat, a commutator I is fixed on the housing at one end of the worm I, a motor is mounted on the housing at the other end of the worm I, and the housing is fixed on the mounting seat.

5. The multi-point parallel synchronous drive solar tracking system according to claim 2, characterized in that: The power output end of the power guiding mechanism I is connected to the power input end of the adjacent driven mechanism along the axial transmission through the power guiding mechanism II after passing through the mechanical drive shaft; The driven mechanism includes a worm gear transmission unit II; the worm gear transmission unit II includes a worm II as a power input end and a worm wheel II as a power output end; The power guiding mechanism II is respectively connected to the mechanical driving shaft along the axial direction and to the worm II in transmission connection, and is used to transmit the rotational power of the mechanical driving shaft to the worm II; the worm wheel II is meshed with the upper side of the worm II; and the worm wheel II is sleeved on the main shaft.

6. The multi-point parallel synchronous drive solar tracking system according to claim 5, characterized in that: The power guiding mechanism II includes a universal joint assembly II and a commutator II; the power input end of the universal joint assembly II is axially connected to the mechanical drive shaft; the power output end of the universal joint assembly II is connected to the reversing input end of the commutator II; the reversing output end of the commutator II is meshed and connected to the worm II gear; A connecting shaft II is arranged at the power input end of the universal joint assembly II away from the commutator II, and the connecting shaft II is rotatably supported on the column through the support member II; and the power input end of the universal joint assembly II is connected to the mechanical drive shaft as a whole through the connecting shaft II.

7. The multi-point parallel synchronous drive solar tracking system according to claim 5, characterized in that: The power guiding mechanism II includes a commutator III; The power input end of the commutator III is connected to the mechanical drive shaft along the axial transmission, and the power output end is connected to the worm II gear meshing transmission.

8. The multi-point parallel synchronous drive solar tracking system according to claim 5, characterized in that: The solar tracking systems are arranged in parallel in multiple rows in the east-west direction; the worms on the main shafts of two adjacent rows of solar tracking systems are respectively connected in transmission via the transmission shafts of the commutator; and / or, The multi-point parallel synchronous drive device is set as a plurality of groups connected in series, and the plurality of power guiding mechanisms I and power guiding mechanisms II in the plurality of groups connected in series are connected end to end by a plurality of mechanical drive shafts for rotation, or are synchronously connected by a mechanical drive shaft; the number of the drive motors is set to 1, and a controller is correspondingly provided, and the controller is electrically connected to the drive motor.

9. The multi-point parallel synchronous drive solar tracking system according to claim 1, characterized in that: The driven mechanisms of the plurality of stages are evenly spaced and distributed on one side or both sides of the driving mechanism; and / or, The top of the column is fixedly connected to the column top seat, the main shaft is inserted into the bearing, the bearing is installed in the bearing seat ring, and the column top seat is fixedly connected to the bearing seat ring.

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