A multi-point parallel synchronous drive solar tracking system

Abstract

The invention discloses a multi-point parallel synchronous drive solar tracking system, comprising a main shaft and a plurality of columns for supporting the main shaft, the main shaft being used for fixing solar modules, and a multi-point parallel synchronous drive device arranged on the main shaft, the device comprising a driving mechanism and a plurality of levels of driven mechanisms connected by transmission; the first power output end of the driving mechanism is rotatably connected with the main shaft, and the main shaft is used as the power output shaft; the second power output end of the driving mechanism is arranged below the main shaft and is parallel to the main shaft axis; a plurality of levels of driven mechanisms are arranged at intervals along the main shaft, the second power output end of the driving mechanism is axially connected to the power input end of the adjacent driven mechanism, and the adjacent two levels of driven mechanisms are axially connected; the power output end of any level of driven mechanism is rotatably connected with the main shaft; thus, the driving mechanism and the driven mechanism cooperate in transmission to realize the multi-point parallel synchronous drive rotation of the main shaft. 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 single-drive tracking system is widely used in the driving tracking system of photovoltaic brackets. It is driven by a single point of a reducer or a push rod, a linear actuator or other driving mechanism to rotate. In this way, a free long cantilever structure is formed except for the driving point. It is easy to cause the free long cantilever to twist in strong winds. The longer the cantilever is, the more serious the distortion is, which will cause the risk of damage to the components and brackets. At the same time, the resonance risk will increase due to the low natural frequency. Specifically, in the single-axis tracking system, except for the driving point, which is a fixed locking point under the action of strong winds, the other points of this driving mechanism 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, 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, using a parallel drive as a drive structure, combined with a mechanical drive shaft to achieve multi-point parallel synchronous drive, achieving stable locking under severe weather conditions.

[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, the main shaft being used for fixedly installing a solar module, and further comprising a multi-point parallel synchronous drive device arranged on the main shaft, the multi-point parallel synchronous drive device comprising a driving mechanism and several levels of driven mechanisms connected in transmission;

[0007] A first power output end of the driving mechanism is rotationally connected to the main shaft, with the main shaft serving as a power output shaft; a second power output end of the driving mechanism is arranged below the main shaft and is parallel to the main shaft in axis;

[0008] Several levels of the driven mechanisms are arranged at intervals along the main shaft, the second power output end of the driving mechanism is connected in axial transmission with the power input end of an adjacent driven mechanism, and adjacent two levels of driven mechanisms are connected in axial transmission; a power output end of any level of the driven mechanism is rotationally connected to the main shaft;

[0009] Thus, the driving mechanism and the driven mechanisms are in transmission cooperation to realize multi-point parallel synchronous driving rotation of the main shaft.

[0010] Preferably, the driving mechanism comprises a worm and gear transmission unit Ⅰ fixed on the column and a transmission gear serving as the second power output end; the worm and gear transmission unit Ⅰ comprises a worm Ⅰ and a worm wheel Ⅰ serving as the first power output end;

[0011] The transmission gear meshes with the lower side of the worm Ⅰ, the worm wheel Ⅰ meshes with the upper side of the worm Ⅰ; and the end face of the transmission gear is parallel to the end face of the worm wheel; the worm wheel Ⅰ is sleeved on the main shaft and is rotationally connected to the main shaft;

[0012] The driving mechanism is connected in axial transmission with the power input end of the driven mechanism through the transmission gear.

[0013] Further, a mechanical drive shaft is fixedly connected inside the transmission gear, the mechanical drive shaft is fixedly arranged between the column and the worm and gear unit in a rotatable manner with the transmission gear, and the mechanical drive shaft is parallel to the main shaft;

[0014] The driving mechanism is in transmission connection with the power input end of an adjacent driven mechanism through the mechanical drive shaft, and adjacent driven mechanisms are in transmission connection through the mechanical drive shaft.

[0015] Further, the driving mechanism further comprises a driving motor, and an output shaft of the driving motor is in driving connection with the worm or the mechanical drive shaft.

[0016] Further, on both sides of the worm wheel Ⅰ along the length direction of the main shaft, a worm wheel housing Ⅰ with an installation hole is fixed, and the main shaft is rotatably arranged in the installation hole;

[0017] The worm wheel housing Ⅰ is fixedly connected to the column.

[0018] Further, a pair of mounting side plates are detachably arranged on both sides of the column along the direction perpendicular to the main shaft;

[0019] The worm wheel housing I is fixed on the pair of mounting side plates through a support seat;

[0020] A drive shaft seat is arranged between the bottom of the worm wheel housing I and the top of the column for rotatably mounting a mechanical drive shaft; and the drive shaft seat is fixed between the pair of mounting side plates.

[0021] Further, the driven mechanism includes a worm and worm gear transmission unit II and a connecting piece as a power input end; the worm and worm gear transmission unit II includes a worm II and a worm wheel II as a power output end;

[0022] The connecting piece is axially connected to the mechanical drive shaft and vertically connected to the worm II respectively for transmitting the axial rotation of the mechanical drive shaft to the worm; the worm wheel II meshes with the upper side of the worm II; and the worm wheel II is sleeved on the main shaft and rotatably connected to the main shaft.

[0023] Further, worm wheel housings II with mounting holes are fixed on both sides of the worm wheel II along the length direction of the main shaft; the main shaft is rotatably arranged in the mounting holes;

[0024] The top of the column is detachably connected to a column top seat; the column top seat is set as a U-shaped bending part; the connecting piece is placed in the column top seat and detachably connected by passing through the mounting holes on both sides of the column and the vertical planes of the column top seat along the direction perpendicular to the main shaft in sequence;

[0025] The worm wheel housing II is fixed on the horizontal plane of the column top seat;

[0026] Further, the connecting piece is a commutator or a universal joint.

[0027] Further, the main shaft is set as multiple parallel rows, and the column is also correspondingly set as multiple parallel rows; the worms on adjacent two rows of main shafts are respectively connected in corresponding transmission.

[0028] Further, the multi-point parallel synchronous drive device is set as multiple series-connected groups. The transmission gears and connecting pieces in the multiple series-connected groups of multi-point parallel synchronous drive devices are connected by one mechanical drive shaft or multiple mechanical drive shafts, and the multiple mechanical drive shafts are rotationally connected end to end; the number of drive motors is set as 1, and a controller is correspondingly arranged, and the controller is electrically connected to the drive motor.

[0029] Preferably, several levels of the driven mechanisms are evenly spaced on one side or both sides of the drive mechanism; and / or,

[0030] The top of the column is fixedly connected to the column top seat. The main shaft passes through a bearing, and the bearing is installed in a bearing seat ring. The column top seat is fixedly connected to the bearing seat ring.

[0031] The beneficial effects of the present invention compared with the prior art are as follows:

[0032] 1) In the present invention, the driving mechanism and the driven mechanism cooperate with each other, and are synchronously connected through a mechanical drive shaft. The driving mechanism divides the power into two parallel outputs along the axial direction, driving the adjacent driven mechanisms. The driven mechanisms also drive the adjacent driven mechanisms to transmit axially, so that the power output ends of several levels of driven mechanisms jointly act on the main shaft, forming a cooperation of multi-point driving the main shaft to rotate synchronously. Thus, when strong winds come, the multiple driving points of the system become multiple fixed locking points, correspondingly greatly reducing the jitter of the system, and greatly improving the stability and reliability. Therefore, it can disperse the wind pressure and wind torque, and greatly improve the reliability and stability of the system operation. Moreover, 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.

[0033] 2) Both the driving mechanism and the driven mechanism of the present invention adopt a worm and worm gear transmission unit, converting the vertical input and output of the worm and worm gear into two parallel synchronous outputs parallel to the worm output, while retaining the large holding torque of the worm and worm gear structure. Combining with the mechanical drive shaft, multi-point parallel synchronous driving is achieved, and the locking effect on the main shaft can be realized under strong wind conditions. Moreover, the design of two-way parallel driving can effectively reduce the occlusion of the transmission components on the solar components, especially the bifacial components, making the system design more flexible.

[0034] 3) In the present invention, the multi-point parallel synchronous driving device is arranged according to the size interval of the photovoltaic strings actually required to be carried. The distance from each driving device to the edge of the corresponding bearing system does not exceed 10 meters. Therefore, under strong wind conditions, the deformation of the system is greatly reduced, the force is reduced, the torque is reduced, and correspondingly the system cost is also greatly reduced.

[0035] 4) In the prior art, a single set of solar tracking system can at most meet 3 1500V photovoltaic strings, while a single set of the present invention can install 4 or more 1500V photovoltaic strings (generally 30 components for a single 1500V photovoltaic string), and can ensure the stability of the system operation under extreme weather conditions, especially strong wind conditions. Among them, the single set of solar tracking system mentioned in the present invention refers to a system that can at most meet 3 1500V photovoltaic strings on a single row of main shafts.

[0036] 5) In the present invention, only one driving motor and a controller need to be set for a single set of system. All the worm and worm gears, transmission gears, and connecting parts are connected by a mechanical drive shaft and driven synchronously, reducing the installation, operation, and maintenance costs.

[0037] 6) The cooperation form of the driving mechanism and the driven mechanism of the present invention can also adapt to the driving of multi-platform tracking systems, that is, the east-west multi-row tracking system. Just connect the corresponding worms of two adjacent rows of tracking systems for transmission, and the synchronous linkage of the multi-platform tracking system can be achieved, making the technical application scope of the present invention wider and the applicability stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic structural diagram of the multi-point parallel synchronous drive solar tracking system of the present invention.

[0039] Figure 2 is Figure 1 The enlarged structural view of part A in

[0040] Figure 3 is Figure 1 The enlarged structural view of part B in

[0041] Figure 4 It is a schematic structural diagram of the multi-point parallel synchronous drive device in the system of the present invention.

[0042] Figure 5a 、 Figure 5b It is the enlarged structural view of the column that provides support for the main shaft alone.

[0043] The meanings of the reference symbols in the drawings are as follows:

[0044] 1 - Driving mechanism, 10 - Worm and gear transmission unit Ⅰ, 100 - Worm Ⅰ, 101 - Worm wheel housing Ⅰ, 102 - Support seat, 11 - Transmission gear;

[0045] 2 - Driven mechanism; 20 - Worm and gear transmission unit Ⅱ, 200 - Worm Ⅱ, 201 - Worm wheel housing Ⅱ, 21 - Connecting piece;

[0046] 3 - Main shaft, 30 - Bearing race;

[0047] 4 - Mechanical drive shaft;

[0048] 5 - Column, 50 - Installation side plate, 51 - Drive shaft seat, 52 - Column top seat, C - Vertically adjustable row of holes Ⅲ, D - Fixed hole Ⅲ;

[0049] 6 - Solar module. DETAILED DESCRIPTION OF THE INVENTION

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and other embodiments can be obtained.

[0051] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product.

[0052] Embodiment 1

[0053] As Figures 1 to 4 shown, it 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, and the main shaft 3 is used to fixedly install a solar module 6;

[0054] It further includes a multi-point parallel synchronous drive device provided on the main shaft 3, and the multi-point parallel synchronous drive device includes a driving mechanism 1 and several levels of driven mechanisms 2 that are drivingly connected;

[0055] The first power output end of the driving mechanism 1 is rotationally connected to the main shaft 3, with the main shaft 3 serving as the power output shaft; the second power output end of the driving mechanism 1 is fixedly provided below the main shaft 3 and is parallel to the main shaft 3 in axis;

[0056] Several levels of the driven mechanisms 5 are arranged at intervals along the main shaft 3. The second power output end of the driving mechanism 1 is axially drivingly connected to the power input end of the adjacent driven mechanism 2, and the adjacent two levels of driven mechanisms 2 are axially drivingly connected; the power output end of any one of the driven mechanisms 2 is rotationally connected to the main shaft 3;

[0057] Thus, the driving mechanism and several levels of driven mechanisms are drivingly coordinated to achieve multi-point parallel synchronous driving rotation of the main shaft.

[0058] In this embodiment, the driving mechanism 1 outputs power along the axial direction to the main shaft 3 and the adjacent driven mechanism 2 through the first and second power output ends respectively. The driven mechanism 2 drives the adjacent driven mechanism 2 to transmit axially accordingly, so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a cooperation for driving the main shaft 3 to rotate synchronously at multiple points. Applying this technical solution, when strong wind comes, multiple driving points of the system become multiple fixed locking points, correspondingly reducing the vibration of the system significantly and greatly improving the stability and reliability. Thus, the wind pressure and wind torque can be dispersed, and the reliability and stability of the system operation can be greatly improved. Moreover, 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 driving device is arranged at intervals according to the size of the photovoltaic string to be carried actually. The distance from each driving device to the edge of the corresponding bearing system does not exceed 10 meters. Therefore, in case of strong wind, the deformation, stress and torque of the system are greatly reduced, and the corresponding system cost is also greatly reduced. In practical applications, the multi-point parallel synchronous driving device includes a driving mechanism 1 and two levels of driven mechanisms 2 connected in transmission. Each set of system is driven by the multi-point parallel synchronous driving device, which can ensure the stability of the system operation under extreme weather conditions (especially strong wind); a single set of system can install 4 or more 1500V photovoltaic strings (generally 30 components for a single 1500V photovoltaic string).

[0059] As a preferred embodiment, the driven mechanisms 2 are evenly spaced on one side or both sides of the driving mechanism 1. Thus, the stable reliability of the multi-point parallel synchronous driving of the main shaft 3 can be further improved.

[0060] Embodiment 2

[0061] As Figures 1 to 4 shown, a multi-point parallel synchronous driving solar tracking system includes a main shaft 3 and a plurality of columns 5 for supporting the main shaft 3. The main shaft 1 is used for fixing solar modules 6;

[0062] It further includes a multi-point parallel synchronous driving device arranged on the main shaft 3. The multi-point parallel synchronous driving device includes a driving mechanism 1 and several levels of driven mechanisms 2 connected in transmission;

[0063] The first power output end of the driving mechanism 1 is rotationally connected to the main shaft 3, with the main shaft 3 as the power output shaft; the second power output end of the driving mechanism 1 is arranged below the main shaft 3 and is parallel to the main shaft 3 in axis;

[0064] The driving mechanism 1 includes a worm gear transmission unit Ⅰ10 fixed on the column 5 and a transmission gear 11 as a second power output end; the worm gear transmission unit Ⅰ10 includes a worm Ⅰ100 and a worm wheel Ⅰ as a first power output end; the transmission gear 11 is meshed with the lower side of the worm Ⅰ100, and the worm wheel Ⅰ is meshed with the upper side of the worm Ⅰ100; and the end face of the transmission gear 11 is parallel to the end face of the worm wheel Ⅰ; the worm wheel Ⅰ is sleeved on the main shaft 3 and is rotatably connected to the main shaft 3;

[0065] 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 transmission gear 11; and the adjacent two levels of driven mechanisms 2 are axially connected; the power output end of any driven mechanism 2 is rotationally connected to the main shaft 3;

[0066] Thus, the driving mechanism 1 cooperates with several levels of driven mechanisms 2 to realize multi-point parallel synchronous driving rotation of the main shaft 3.

[0067] In this embodiment, a worm gear transmission structure is adopted in the driving mechanism 1, and the power is output axially to the main shaft 3 and the adjacent driven mechanism 2 through the worm wheel I and the transmission gear 11, and then the adjacent driven mechanism 2 is driven 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 synchronous rotation of the main shaft 3. In the traditional worm gear transmission mechanism, the input shaft and the output shaft are in a vertical relationship, while this embodiment converts 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 can achieve the locking effect on the main shaft 3 under strong wind conditions. In addition, the parallel drive of this embodiment can effectively reduce the shielding of the transmission components to the solar module 6, especially the bifacial module, making the system design more flexible.

[0068] In the above embodiments, a mechanical drive shaft 4 is fixedly connected inside the transmission gear 11. The mechanical drive shaft 4 is fixedly arranged between the column 5 and the worm and worm gear unit in a rotatable manner with the transmission gear 11, and the mechanical drive shaft 4 is parallel to the main shaft 1. The drive mechanism 1 is drivingly connected to the power input end of the adjacent driven mechanism 2 through the mechanical drive shaft 4, and the adjacent driven mechanisms 2 are drivingly connected through the mechanical drive shaft 4. Thus, the synchronous cooperative transmission between the drive mechanism 1 and the driven mechanism 2 is realized through the mechanical drive shaft 4. The drive mechanism 1 outputs power along the axial direction to the main shaft 3 and the mechanical drive shaft 4 through the worm gear I and the transmission gear 11 respectively. The mechanical drive shaft 4 drives the adjacent driven mechanisms 2 and then drives the adjacent driven mechanisms 2 to transmit axially accordingly, so that the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a cooperation of multiple-point driving the main shaft 3 to rotate synchronously. On the basis of utilizing the large torque of the worm and worm gear transmission, due to the design of the two-way parallel synchronous output of the mechanical drive shaft 4 and the main shaft 3, the mechanical drive shaft 4 is arranged in parallel in the space between the lower part of the main shaft 3 and the top of the column 5, making full use of the space. For the double-sided component occlusion, only the main shaft needs to be avoided, making the system layout more convenient.

[0069] As a preferred embodiment, the drive mechanism 1 further includes a drive motor. The output shaft of the drive motor is drivingly connected to the worm gear I 100, so that the motor drives the worm gear I 100 to drive the worm gear I to rotate and drive the transmission gear 11 to rotate; or the output shaft of the drive motor is drivingly connected to the mechanical drive shaft 4, so that the motor drives the mechanical drive shaft 4 to drive the transmission gear 11 to rotate and drive the worm gear I 100 and the worm gear I to rotate. Thus, the arrangement of the drive motor is more flexible and convenient.

[0070] As another preferred embodiment, worm gear housings I 101 with mounting holes are fixed on both sides of the worm gear I along the length direction of the main shaft 3. The main shaft 3 is rotatably arranged in the mounting holes. The worm gear housing I 101 is fixedly connected to the column 5. More preferably, a pair of mounting side plates 50 are detachably arranged on both sides of the column 5 along the direction perpendicular to the main shaft 3. The worm gear housing I 101 is fixed on the pair of mounting side plates 50 through a support seat 102. A drive shaft seat 51 is arranged between the bottom of the worm gear housing I 101 and the top of the column 5 for rotatably mounting the mechanical drive shaft 4. And the drive shaft seat 51 is fixed between the pair of mounting side plates 50.

[0071] In the worm and worm gear transmission unit I 10 of this embodiment, the worm wheel I sleeved the main shaft 3 rotatably therein, and was fixed by connecting with the column 5 through the worm wheel housing I 101. Thus, when the worm wheel I rotates, the main shaft 3 is correspondingly driven to rotate in a fixed-point tracking manner; the fixed support for the main shaft 3 and the driving mechanism 1 is realized through the column 5. Moreover, by arranging the driving shaft seat 51 relying on the column 5 in the space between the main shaft 3 and the column 5, the layout is flexible and compact, and there is no interference with the solar installation components.

[0072] As another preferred embodiment, the driven mechanism 2 includes a worm and worm gear transmission unit II 20 and a connecting member 21 as the power input end; the worm and worm gear transmission unit includes a worm II 200 and a worm wheel II as the power output end; the connecting member 21 is axially connected with the mechanical drive shaft 4 and vertically connected with the worm II 200 respectively, for transmitting the axial rotation of the mechanical drive shaft 4 to the worm II 200; the worm wheel II meshes with the upper side of the worm II 200; and the worm wheel II is sleeved on the main shaft 3 and rotatably connected with the main shaft 3.

[0073] This embodiment provides a preferred setting form of the driven mechanism 2, which also utilizes the worm and worm gear transmission structure. The driving mechanism outputs power to the main shaft 3 and the mechanical drive shaft 4 axially through the worm wheel I and the transmission gear 11 respectively. The mechanical drive shaft 4 transmits the axial rotation to the connecting member 21 and then to the worm II 200. Thus, the adjacent driven mechanisms 2 are driven to synchronously transmit axially by the mechanical drive shaft 4, and then the power output ends of several levels of driven mechanisms 2 act on the main shaft 3 together, forming a cooperation of driving the main shaft 3 to rotate synchronously by multiple points. In practical applications, the multi-point parallel synchronous driving device includes a driving mechanism 4 and two levels of driven mechanisms 5 connected in transmission. Each set of systems is driven by the multi-point parallel synchronous driving device, which can ensure the stability of the system operation under extreme weather conditions (especially strong winds); a single set of systems can install 4 or even more 1500V photovoltaic strings (generally 30 components for a single 1500V photovoltaic string).

[0074] Preferably, multiple sets of the multi-point parallel synchronous drive devices are arranged in series. The transmission gears 11 and the connecting members 21 in the multiple sets of the multi-point parallel synchronous drive devices arranged in series are connected by one mechanical drive shaft 4, or the transmission gears and the connecting members can also be connected by multiple mechanical drive shafts. The multiple mechanical drive shafts are rotationally connected end to end through universal joints, so as to adapt to different terrains. The number of the drive motors is set to 1, and a controller is correspondingly provided. The controller is electrically connected to the drive motor. Through this preferred solution, only one drive motor and one controller need to be set for a single set of system (the drive motor and the controller can be supported and fixed by relying on the column 5). The controller adopts a single-chip microcomputer, and the single-chip microcomputer is electrically connected to the drive motor. All the transmission gears and the connecting members (including between the transmission gears and the adjacent connecting members and between two adjacent connecting members) in the multiple sets of the multi-point parallel synchronous drive devices are connected by one mechanical drive shaft, or the transmission gears and the connecting members can also be connected by multiple mechanical drive shafts. The multiple mechanical drive shafts are rotationally connected end to end through universal joints, so as to adapt to different terrains, perform synchronous drive, and reduce the installation, operation and maintenance costs. In addition, the electrical connection setting of the aforementioned drive motor and controller is a conventional technical means in the art. The model of the single-chip microcomputer is the STM32E103 series, or other commercially available models can also be selected, as long as it can realize the function of sending command signals to the drive motor, and no further detailed description will be made here.

[0075] Preferably, the main shafts 3 are arranged in multiple parallel rows, and correspondingly, the columns 5 are also arranged in multiple parallel rows; the worms between two adjacent rows of the main shafts 3 are correspondingly connected in transmission, so as to realize the multi-row synchronous linkage of the photovoltaic tracking system. Specifically, the worm Ⅰ 100 in the first row of the main shafts 3 is correspondingly connected in transmission with the worm Ⅰ 100 in the second row to the nth row of the main shafts one by one, and several levels of the worm Ⅱ 200 in the first row of the main shafts are correspondingly connected in transmission with several levels of the worm Ⅱ 200 in the second row to the nth row of the main shafts 3 one by one. In practical applications, the transmission connection is realized through a transmission shaft, so as to realize the multi-row synchronous linkage.

[0076] Therefore, the matching form of the driving mechanism and the driven mechanism of the present invention can also adapt to a multi-platform tracking system (that is, the driving of the multi-row tracking system in the east-west direction). By connecting the worms of two adjacent rows of the tracking system in transmission, the synchronous linkage of the multi-platform tracking system can be realized, making the technical application scope of the present invention wider and the applicability stronger.

[0077] Preferably, on both sides of the worm gear II along the length direction of the main shaft, there are worm gear housings II 201 with mounting holes, and the main shaft 3 is rotatably arranged in the mounting holes; the top of the column 5 is detachably connected to the column top seat 52; the column top seat 52 is a U-shaped bending part; the connecting piece 21 is placed in the column top seat 52 and sequentially passes through the mounting holes on the vertical surfaces of the column 5 and the column top seat 52 along both sides perpendicular to the main shaft 3 for detachable connection; the worm gear housing II 201 is fixed on the horizontal plane of the column top seat 52. More specifically, several rows of adjusting holes II are arranged at the top of the column 5, the column top seat is a U-shaped bending part, and a pair of fixing holes II are oppositely arranged on the two vertical surfaces of the column top seat; the connecting piece 21 is placed in the column top seat 52 and sequentially passes through the adjusting holes II and the fixing holes II to realize height-adjustable and detachable connection with the column 5 and the column top seat 52.

[0078] This preferred example provides a fixed connection method between the worm gear and worm drive unit II 20 and the column 5 in the driven mechanism 2, as well as a mating connection form between the mechanical drive shaft 4 and the worm gear and worm drive unit II 20. The structure layout is compact. Through the column, the fixed support for the main shaft 3 and the driven mechanism 2 is realized, so that the mechanical drive shaft 4 rotates steadily and maintains a constant parallel drive relationship with the main shaft 3.

[0079] Preferably, the connecting piece 21 is a commutator or a universal joint, or an existing component or assembly that can realize the functions of commutation and power transmission. As Figure 3 shown, the connecting piece 21 is a commutator, and the mechanical drive shaft 4 is arranged in the commutator. This commutator is preferably a gear commutator, which can synchronously transmit the power of the mechanical drive shaft 4 to the worm II 200 of the driven mechanism 2. Here, the working principle of the gear commutator is prior art and will not be elaborated in detail.

[0080] In this preferred example, a preferred setting form of the driven mechanism 2 is provided. The axial power from the mechanical drive shaft 4 is commutated and transmitted to the worm gear and worm drive unit II 20 through the connecting piece 21 that can realize the functions of commutation and power transmission, so as to realize the synchronous rotation of the main shaft 3 and the worm gear II.

[0081] Embodiment 3

[0082] On the basis of Embodiment 1 or 2, it should be noted that in addition to the column 5 that synchronously supports the main shaft 3, the drive mechanism 1 and the driven mechanism 2, other columns 5 that separately support the main shaft can also be provided. Such as Figure 5a 、 5bAs shown, the top of the column 5 is fixedly connected to the column top seat 52; the main shaft 3 is passed through a 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 realize direct rotatable support for the main shaft 3. In practical applications, the top of the column 5 is provided with vertically adjustable row holes III C, and the column top seat 51 is set as a U-shaped bending part, and a set of fixing holes III D are oppositely arranged on two vertical surfaces of the column top seat 51; the relative height of the column 5 and the column top seat 52 can be adjusted through the cooperation of the vertically adjustable row holes III C and this set of fixing holes III D.

[0083] Thus, 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 be connected to the foundation or directly serve as the foundation to support the main shaft 1. In practical applications, the bearing is preferably a polymer bearing.

[0084] It should be noted that the above embodiments can be freely combined as needed. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded 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, the main shaft being used for fixedly installing solar modules, characterized in that: It further includes a multi-point parallel synchronous driving device arranged on the main shaft. The multi-point parallel synchronous driving device includes a driving mechanism, several levels of driven mechanisms and a mechanical driving shaft which are connected in a transmission manner; The driving mechanism adopts a worm and worm gear transmission structure to divide the power into a first power and a second power. The first power output end of the driving mechanism is rotationally connected to the main shaft, and the first power is output to the main shaft through the first power output end, with the main shaft serving as the power output shaft; the second power output end of the driving mechanism is arranged below the main shaft and outputs power in a direction parallel to the axis of the main shaft; The mechanical driving shaft is parallel to the main shaft. The driving mechanism is in transmission connection with the power input end of the adjacent driven mechanism through the mechanical driving shaft, and the adjacent driven mechanisms are in transmission connection through the mechanical driving shaft; several levels of the driven mechanisms are arranged at intervals along the main shaft. The second power output end of the driving mechanism is in axial transmission connection with the power input end of the adjacent driven mechanism, and the adjacent two levels of driven mechanisms are in axial transmission connection; the power output end of any level of the driven mechanism is rotationally connected to the main shaft; Wherein, the driven mechanism adopts a worm and worm gear transmission structure to divide the input power at the power input end of the driven mechanism into the power transmitted to the adjacent driven mechanism and the power output at the power output end of the driven mechanism. The first power output end of the driving mechanism and the power output ends of several levels of the driven mechanisms act on the main shaft together. Thus, the driving mechanism and several levels of the driven mechanisms are in transmission cooperation to realize the multi-point parallel synchronous driving rotation of the main shaft.

2. The multi-point parallel synchronous drive solar tracking system according to claim 1, characterized in that: The driving mechanism includes a worm and worm gear transmission unit Ⅰ fixed on the column and a transmission gear as the second power output end; the worm and worm gear transmission unit Ⅰ includes a worm Ⅰ and a worm wheel Ⅰ as the first power output end; The transmission gear meshes with the lower side of the worm Ⅰ, and the worm wheel Ⅰ meshes with the upper side of the worm Ⅰ; and the end face of the transmission gear is parallel to the end face of the worm wheel Ⅰ; the worm wheel Ⅰ is sleeved on the main shaft and is rotationally connected to the main shaft; The driving mechanism is in axial transmission connection with the power input end of the driven mechanism through the transmission gear.

3. The multi-point parallel synchronous drive solar tracking system according to claim 2, characterized in that: The mechanical driving shaft is fixedly connected inside the transmission gear, and the mechanical driving shaft is fixedly arranged between the column and the worm and worm gear transmission unit Ⅰ in a rotatable manner along with the transmission gear.

4. The multi-point parallel synchronous drive solar tracking system according to claim 3, characterized in that: The driving mechanism further includes a driving motor, and the output shaft of the driving motor is in driving connection with the worm Ⅰ of the driving mechanism or with the mechanical driving shaft.

5. The multi-point parallel synchronous drive solar tracking system according to claim 2, characterized in that: On both sides of the worm wheel Ⅰ along the length direction of the main shaft, a worm wheel housing Ⅰ with an installation hole is fixed, and the main shaft is rotatably arranged in the installation hole; The worm wheel housing Ⅰ is fixedly connected to the column.

6. The multi-point parallel synchronous drive solar tracking system according to claim 5, characterized in that: A pair of installation side plates are detachably arranged on both sides of the column along the direction perpendicular to the main shaft; The worm wheel housing Ⅰ is fixed on the pair of installation side plates through a support seat; A driving shaft seat is arranged between the bottom of the worm wheel housing Ⅰ and the top of the column for rotatably installing the mechanical driving shaft; and the driving shaft seat is fixed between the pair of installation side plates.

7. The multi-point parallel synchronous drive solar tracking system according to claim 4, characterized in that: The driven mechanism includes a worm and worm gear transmission unit II and a connecting member as the power input end; the worm and worm gear transmission unit II includes a worm II and a worm gear II as the power output end; The connecting member is axially connected to the mechanical drive shaft and vertically connected to the worm II respectively, and is used to transmit the axial rotation of the mechanical drive shaft to the worm II; the worm gear II meshes with the upper side of the worm II; and the worm gear II is sleeved on the main shaft and rotatably connected to the main shaft.

8. The multi-point parallel synchronous drive solar tracking system according to claim 7, characterized in that: Worm gear housings II with mounting holes are fixed on both sides of the worm gear II along the length direction of the main shaft, and the main shaft is rotatably arranged in the mounting holes; The top of the column is detachably connected to the column top seat; the column top seat is set as a U-shaped bending part; the connecting member is placed in the column top seat and sequentially passes through the mounting holes in the vertical surfaces of the column and the column top seat on both sides perpendicular to the main shaft for detachable connection; The worm gear housing II is fixed on the horizontal plane of the column top seat; and / or The connecting member is a commutator or a universal joint.

9. The multi-point parallel synchronous drive solar tracking system according to claim 7, characterized in that: The main shafts are arranged in multiple parallel rows, and the columns are also correspondingly arranged in multiple parallel rows; the worms on adjacent two rows of main shafts are respectively connected in corresponding transmission; and / or The multi-point parallel synchronous drive device is set as multiple groups connected in series. The transmission gears and connecting members in the multiple groups of multi-point parallel synchronous drive devices connected in series are all connected by one mechanical drive shaft or by multiple mechanical drive shafts, and the multiple mechanical drive shafts are rotatably connected end to end; the number of drive motors is set as 1, and a controller is correspondingly provided, and the controller is electrically connected to the drive motor.

10. The multi-point parallel synchronous drive solar tracking system according to claim 1, wherein: Several levels of the driven mechanisms are evenly spaced on one side or both sides of the drive mechanism; and / or The top of the column is fixedly connected to the column top seat, the main shaft is arranged in a bearing, the bearing is installed in a bearing seat ring, and the column top seat is fixedly connected to the bearing seat ring.

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