A photovoltaic tracking support device

Abstract

The application discloses a photovoltaic tracking support device, which is characterized by the following: a stand is arranged below the external photovoltaic support main shaft, a transmission-connected screw linear transmission structure and a crank rotary transmission mechanism are arranged, and the output end of the crank rotary transmission mechanism is connected with the external photovoltaic support main shaft. The screw linear transmission structure is driven by the driving part to output linear motion, and the linear motion is converted into rotary motion by the crank rotary transmission mechanism and transmitted to the external photovoltaic support main shaft, so that the main shaft is rotated, the rotary tracking requirement of the photovoltaic panel is realized, the transmission efficiency is increased by using the traditional mechanical structure, the transmission device is simplified, and the cost is greatly reduced. The structure is simple, and the failure rate is greatly reduced. Since the photovoltaic support tracks the sunlight every day, the rust problem is almost not considered due to the screw transmission, the long-term maintenance-free requirement of the photovoltaic tracking support is maximally realized, and the problems of the existing photovoltaic tracking device, such as complex structure, high cost and high failure rate, are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic power generation, and particularly relates to a photovoltaic tracking support device. BACKGROUND

[0002] Solar energy, as a clean and renewable energy, is increasingly applied, and photovoltaic power generation technology is the most widely used and fastest developed. In order to make sunlight directly irradiate to the light-receiving plane of a photovoltaic panel, improve light-receiving efficiency and thus improve photovoltaic power generation, when a solar photovoltaic panel, especially a large-area solar photovoltaic panel array or photovoltaic system, is installed on the ground or water surface, it needs to track the sun in real time to adjust the orientation of the photovoltaic component (for example, the movement from east to west).

[0003] Among them, the rotary reducer photovoltaic tracking support device is relatively mature, and Chinese patent 202022720105.8 discloses a multi-rotation synchronous driving photovoltaic tracking support. The device is provided with several rotary reducers at appropriate positions on a string of flat single-axis photovoltaic tracking supports, and the main shaft of the photovoltaic tracking support device is driven to rotate by the rotary reducer, so that the photovoltaic panel directly faces the sunlight. However, since the force arm of the rotary reducer is small, when the wind resistance and snow pressure are large, the torque received by the photovoltaic tracking support device is all loaded on the rotary reducer, and the rotary reducer sometimes even has the risk of overload, so it is necessary to increase the torque bearing capacity of the rotary reducer, resulting in high manufacturing cost of the rotary reducer. In addition, the worm and worm gear reduction device used in the rotary reducer is used to realize the self-locking and speed reduction function of the photovoltaic tracking device, and the manufacturing cost is also very high. The internal structure of the rotary reducer is also very complex, and the failure rate is relatively high compared with the traditional mechanical transmission structure. There are many problems in later maintenance, and it cannot meet the 25-year maintenance-free requirement. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a photovoltaic tracking support device to solve the problems of complex structure, high cost and high failure rate of the existing photovoltaic tracking device.

[0005] To solve the above problems, the technical scheme of the present application is as follows:

[0006] The photovoltaic tracking support device of the present application is used to drive the main shaft of the external photovoltaic support, which comprises:

[0007] A plurality of columns are arranged in sequence below the main shaft of the external photovoltaic support;

[0008] A plurality of threaded linear transmission mechanisms are arranged on the columns correspondingly;

[0009] A plurality of crank rotation transmission mechanisms, input ends of the crank rotation transmission mechanisms are connected with output ends of corresponding thread linear transmission mechanisms respectively, and output ends of the crank rotation transmission mechanisms are connected with corresponding external photovoltaic support main shafts respectively;

[0010] A driving part is connected with the input end of each thread linear transmission mechanism, and is used for driving each thread linear transmission mechanism to operate.

[0011] The photovoltaic tracking support device comprises a driving part, a plurality of transmission units and a plurality of power transmission units.

[0012] The plurality of transmission units are arranged on the stand respectively, and the output end of the transmission unit is connected with the input end of the thread linear transmission mechanism.

[0013] The plurality of power transmission units are connected between the input ends of adjacent transmission units respectively.

[0014] The output end of the driving unit is connected with the input end of any transmission unit, and is used for driving the corresponding transmission unit and transmitting driving force to the remaining transmission units through the power transmission unit.

[0015] The transmission unit comprises a mounting seat, a first bevel gear, a second bevel gear and a bevel gear shaft.

[0016] The mounting seat is arranged on the stand.

[0017] The bevel gear shaft is arranged on the mounting seat and is rotatably connected with the mounting seat, and the input end of the bevel gear shaft is connected with the output end of the driving unit or the power transmission unit.

[0018] The first bevel gear is arranged on the bevel gear shaft.

[0019] The second bevel gear is arranged on the input end of the thread linear transmission mechanism, and the second bevel gear is engaged with the first bevel gear.

[0020] The power transmission unit comprises a transmission shaft and two universal couplings.

[0021] The two universal couplings are arranged at two ends of the transmission shaft respectively, and the two universal couplings are connected with corresponding bevel gear shafts respectively.

[0022] The thread linear transmission mechanism comprises a double-end screw rod, a first sliding block and a second sliding block.

[0023] The input end of the double-end screw rod is connected with the output end of the driving part, and the threads at two ends of the double-end screw rod are opposite in rotation direction.

[0024] The first slider and the second slider are threadedly connected to two ends of the double-end screw rod, and the first slider and the second slider are connected with input ends of the crank rotary transmission mechanism respectively.

[0025] The photovoltaic tracking support device of the application, the crank rotary transmission mechanism comprises a first connecting rod, a second connecting rod and a crank;

[0026] The crank is arranged on the external photovoltaic support main shaft.

[0027] The input end of the first connecting rod is rotationally connected to the first slider, and the output end of the first connecting rod is rotationally connected to the first input end of the crank.

[0028] The input end of the second connecting rod is rotationally connected to the second slider, and the output end of the second connecting rod is rotationally connected to the second input end of the crank.

[0029] The first input end and the second input end are respectively located on two sides of the crank.

[0030] The photovoltaic tracking support device of the application further comprises a column joint; the first end of the column joint is fixedly connected to the external photovoltaic support main shaft; the second end of the column joint is provided with a central hole and a plurality of adjusting holes located on the periphery of the central hole, and is bolted to the column through the central hole and the plurality of adjusting holes.

[0031] The axis of the central hole is horizontally arranged and perpendicular to the axis of the external photovoltaic support main shaft.

[0032] The photovoltaic tracking support device of the application further comprises a driving part support.

[0033] The driving part is arranged on the driving part support.

[0034] An arc-shaped waist hole is arranged on the driving part support; a plurality of vertical waist holes are arranged on the column; and the driving part support is bolted to the column through the arc-shaped waist hole and the plurality of vertical waist holes.

[0035] The photovoltaic tracking support device of the application further comprises a main shaft connecting plate, two ends of the main shaft connecting plate are respectively connected to adjacent external photovoltaic support main shafts.

[0036] The photovoltaic tracking support device of the application, the driving part is a plurality of driving units connected to the input ends of the threaded linear transmission structure respectively.

[0037] The application has the following advantages and positive effects compared with the prior art due to the adoption of the above technical solutions:

[0038] The embodiment of the present application sets up a stand column below the external photovoltaic support main shaft, sets up a transmission connected thread linear transmission structure and a crank rotary transmission mechanism, wherein the output end of the crank rotary transmission mechanism is connected with the external photovoltaic support main shaft. The thread linear transmission structure is driven by the driving part to output linear motion, and the linear motion is converted into rotary motion by the crank rotary transmission structure and transmitted to the external photovoltaic support main shaft, so as to drive the main shaft to rotate, thereby realizing the rotation tracking requirement of the photovoltaic panel. The self-locking function is realized by the performance of the thread itself. The transmission efficiency is increased by using the traditional mechanical structure, the transmission device is simplified, and the cost is greatly reduced. The structure is simple, easy to disassemble, and the failure rate is greatly reduced. Since the photovoltaic support tracks the sunlight every day, the rust problem is almost not considered due to the thread transmission. The long-term maintenance-free requirement of the photovoltaic tracking support is realized as much as possible, and the problems of complex structure, high cost and high failure rate of the existing photovoltaic tracking device are solved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a schematic view of the photovoltaic tracking support device of the present application;

[0040] Figure 2 It is another schematic view of the photovoltaic tracking support device of the present application;

[0041] Figure 3 It is another schematic view of the photovoltaic tracking support device of the present application;

[0042] Figure 4 It is a schematic view of another arrangement of the photovoltaic tracking support device of the present application;

[0043] Figure 5 It is a partial enlarged view of the photovoltaic tracking support device of the present application;

[0044] Figure 6 It is a schematic view of another embodiment of the photovoltaic tracking support device of the present application.

[0045] BRIEF DESCRIPTION OF DRAWINGS: 1: double-head screw rod; 2: first sliding block; 3: first connecting rod; 4: crank; 5: crank pin; 6: purlin; 7: photovoltaic panel; 8: second sliding block; 9: second bevel gear; 10: screw rod bearing; 11: mounting seat; 12: check ring; 13: motor; 14: bevel gear shaft; 15: key; 16: foundation pile; 17: universal coupling; 18: transmission shaft; 19: first motor seat support; 20: second motor seat support; 21: stand column; 22: stand column joint; 23: external photovoltaic support main shaft; 24: main shaft connecting plate; 25: universal coupling connecting seat; 26: bevel gear bearing; 27: motor coupling; 28: second connecting rod; 29: center hole; 30: first adjustment hole; 31: second adjustment hole; 32: first vertical waist hole; 33: arc waist hole; 34: second vertical waist hole. Detailed Implementation

[0046] The photovoltaic tracking bracket device proposed in this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description and claims.

[0047] See Figure 1 , Figure 2 , Figure 3 and Figure 5 In one embodiment, a photovoltaic tracking bracket device is used to drive an external photovoltaic bracket main shaft 23, on which photovoltaic panels 7 are mounted via purlins 6.

[0048] The photovoltaic tracking bracket device includes several columns 21, several threaded linear transmission mechanisms, several crank 4 rotary transmission mechanisms, and a drive unit.

[0049] Several columns 21 are arranged sequentially below the main shaft 23 of the external photovoltaic support.

[0050] Several threaded linear transmission mechanisms are respectively arranged on the column 21. The input end of the crank 4 rotary transmission mechanism is connected to the output end of the corresponding threaded linear transmission mechanism, and the output end of the crank 4 rotary transmission mechanism is connected to the corresponding external photovoltaic bracket main shaft 23.

[0051] The drive unit is connected to the input end of each threaded linear transmission structure and is used to drive each threaded linear transmission mechanism to operate.

[0052] This embodiment features a column 21 positioned below the main shaft 23 of the external photovoltaic bracket, along with a threaded linear transmission structure and a crank 4 rotary transmission mechanism. The output end of the crank 4 rotary transmission mechanism is connected to the main shaft 23 of the external photovoltaic bracket. The drive unit drives the threaded linear transmission structure to output linear motion, which is then converted into rotary motion by the crank 4 rotary transmission mechanism and transmitted to the main shaft 23, causing it to rotate. This achieves the rotation tracking requirement of the photovoltaic panel 7. The self-locking function is achieved through the inherent properties of the thread. Utilizing a traditional mechanical structure increases transmission efficiency, simplifies the transmission device, and significantly reduces costs. The structure is simple, easy to disassemble, and the failure rate is greatly reduced. Furthermore, since the photovoltaic bracket tracks sunlight daily, and the threaded transmission virtually eliminates concerns about rust, it maximizes the requirement of 25 years of maintenance-free operation for the photovoltaic tracking bracket, solving the problems of complex structure, high cost, and high failure rate in existing photovoltaic tracking devices.

[0053] The specific structure of the photovoltaic tracking bracket device in this embodiment will be further described below:

[0054] In this embodiment, the drive unit includes a drive unit, several transmission units, and several power transmission units.

[0055] Several transmission units are respectively mounted on the column 21, and the output end of the transmission unit is connected to the input end of the threaded linear transmission structure. Several power transmission units are respectively connected between the input ends of adjacent transmission units, so that power can be transmitted to the input end of each transmission unit.

[0056] The output of the drive unit is connected to the input of any transmission unit, and is used to drive the corresponding transmission unit and transmit the driving force to the other transmission units through the power transmission unit.

[0057] The drive unit can be a motor 13 and a motor coupling 27, with the motor 13 connected to the input end of the transmission unit via the motor coupling 27.

[0058] Of course, see Figure 6 In other embodiments, the driving unit is a number of driving units respectively connected to the input end of the threaded linear transmission structure, that is, each column 21 is provided with a motor 13 and a motor coupling 27. In this case, there is no need to set up a transmission unit, and it can be directly driven by the motor 13.

[0059] Furthermore, the transmission unit includes a mounting base 11, a first bevel gear, a second bevel gear 9, and a bevel gear shaft 14.

[0060] Mounting base 11 is mounted on column 21. Bevel gear shaft 14 passes through and is rotatably connected to mounting base 11. The input end of bevel gear shaft 14 is connected to motor coupling 27 or the output end of power transmission unit. The bevel gear shaft 14 and mounting base 11 are stably rotatably connected by bevel gear bearing 26.

[0061] The first bevel gear is mounted on the bevel gear shaft 14, and synchronous rotation between the two is achieved through key 15. The second bevel gear 9 is located at the input end of the threaded linear transmission mechanism, and the second bevel gear 9 meshes with the first bevel gear.

[0062] Furthermore, the power transmission unit includes a drive shaft 18 and two universal couplings 17. The two universal couplings 17 are respectively located at both ends of the drive shaft 18, and are respectively connected to the corresponding bevel gear shafts 14 on both sides. Universal coupling connecting seats 25 can be provided at the universal couplings 17 to ensure stable connection at the universal joint shafts.

[0063] That is, only one motor 13 is needed to drive the first bevel gear shaft 14 to rotate, and then the power is transmitted to the bevel gear shafts 14 on the remaining columns 21 through the sequentially arranged transmission shaft 18 and universal coupling 17, so that the input end of the threaded linear transmission mechanism is driven to rotate through the meshing of the two bevel gears.

[0064] Among them, see Figure 4 The orientation of the drive shaft 18 can be determined according to site requirements, i.e., whether the transmission occurs between the main shafts 23 of the external photovoltaic brackets in the same row or between the main shafts 23 of the external photovoltaic brackets in the same column. No specific limitation is made here. Of course, for the arrangement in the same row or column, the corresponding motor 13 and motor coupling 27 must match the axial direction of the corresponding drive shaft 18.

[0065] In this embodiment, the threaded linear transmission mechanism includes a double-ended screw 1, a first slider 2, and a second slider 8.

[0066] The input end of the double-ended screw 1 extends into the mounting base 11 and is rotatably connected to the mounting base 11 via the screw bearing 10 and the retaining ring 12. The input end of the double-ended screw 1 is connected to the second bevel gear 9, and the threads at both ends of the double-ended screw 1 are in opposite directions. The first slider 2 and the second slider 8 are respectively threaded to both ends of the double-ended screw 1, and the first slider 2 and the second slider 8 are respectively connected to the input end of the crank 4 rotary transmission mechanism.

[0067] That is, when the double-headed screw 1 rotates, the first slider 2 and the second slider 8 move towards each other or away from each other.

[0068] Furthermore, the crank 4 rotary transmission mechanism includes a first connecting rod 3, a second connecting rod 28, and a crank 4.

[0069] Crank 4 is mounted on the main shaft 23 of the external photovoltaic bracket. The input end of the first connecting rod 3 is rotatably connected to the first slider 2, and the output end of the first connecting rod 3 is rotatably connected to the first input end of crank 4 via crank pin 5. The input end of the second connecting rod 28 is rotatably connected to the second slider 8, and the output end of the second connecting rod 28 is rotatably connected to the second input end of crank 4 via crank pin 5.

[0070] The first input end and the second input end are located on both sides of the crank 4, respectively. That is, when the double-ended screw 1 rotates, the first slider 2 and the second slider 8 drive the input ends of the first connecting rod 3 and the second connecting rod 28 to move towards or away from each other, thereby pushing the crank 4 and driving the main shaft to achieve rotary motion.

[0071] In this embodiment, the mounting base 11 can be specifically formed by splicing together the first motor base bracket 19 and the second motor base bracket 20 disposed on both sides of the column 21.

[0072] In this embodiment, a foundation pile 16 can be installed below the column 21 to make the column 21 more stable.

[0073] In this embodiment, the photovoltaic tracking bracket device further includes a column connector 22. The first end of the column connector 22 is fixedly connected to the main shaft 23 of the external photovoltaic bracket. The second end of the column connector 22 is provided with a central hole 29 and several adjustment holes located around the central hole, and is bolted to the column 21 through the central hole 29 and the several adjustment holes. The number of adjustment holes can be two, namely the first adjustment hole 30 and the second adjustment hole 31 shown in the figure.

[0074] The axis of the central hole 29 is horizontally arranged and perpendicular to the axis of the external photovoltaic bracket main shaft 23. This allows the external photovoltaic bracket main shaft 23 to swing relative to the column 21 through the engagement of the bolts and the adjusting holes.

[0075] Furthermore, the photovoltaic tracking bracket device also includes a drive unit bracket.

[0076] The drive unit is mounted on a drive unit bracket. The drive unit bracket has an arc-shaped waist hole 33. The column 21 has several vertical waist holes. The drive unit bracket is bolted to the column 21 through the arc-shaped waist hole 33 and the several vertical waist holes. There can also be two vertical waist holes, namely the first vertical waist hole 32 and the second vertical waist hole 34 shown in the figure. Similarly, the external photovoltaic bracket main shaft 23 can swing relative to the column 21 by the cooperation of the bolts and the arc-shaped waist hole 33.

[0077] In this embodiment, the photovoltaic tracking bracket device also includes a main shaft connecting plate 24, the two ends of which are respectively connected to the adjacent external photovoltaic bracket main shaft 23, thereby enabling the adjacent main shafts to be connected and rotate synchronously.

[0078] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A photovoltaic tracking bracket device, characterized in that, Used to drive the main shaft of the external photovoltaic bracket, including: Several columns are arranged sequentially below the main shaft of the external photovoltaic support; Several threaded linear transmission mechanisms are respectively arranged on the column; Several crank-rotation transmission mechanisms are provided, wherein the input ends of the crank-rotation transmission mechanisms are respectively connected to the output ends of the corresponding threaded linear transmission mechanisms, and the output ends of the crank-rotation transmission mechanisms are respectively connected to the main shafts of the corresponding external photovoltaic brackets. The drive unit is connected to the input end of each of the threaded linear transmission structures and is used to drive each of the threaded linear transmission mechanisms to operate. The threaded linear transmission mechanism includes a double-ended screw, a first slider, and a second slider. The input end of the double-ended screw is connected to the output end of the drive unit, and the threads at both ends of the double-ended screw have opposite directions. The first slider and the second slider are respectively threaded to both ends of the double-ended screw, and the first slider and the second slider are respectively connected to the input end of the crank rotary transmission mechanism; The crank-rotation transmission mechanism includes a first connecting rod, a second connecting rod, and a crank; The crank is mounted on the main shaft of the external photovoltaic support; The input end of the first connecting rod is rotatably connected to the first slider, and the output end of the first connecting rod is rotatably connected to the first input end of the crank. The input end of the second connecting rod is rotatably connected to the second slider, and the output end of the second connecting rod is rotatably connected to the second input end of the crank. The first input terminal and the second input terminal are located on both sides of the crank.

2. The photovoltaic tracking bracket device as described in claim 1, characterized in that, The drive unit includes a drive unit, several transmission units, and several power transmission units; Several of the aforementioned transmission units are respectively disposed on the column, and the output end of the transmission unit is connected to the input end of the threaded linear transmission structure; Several of the power transmission units are respectively connected between the input ends of adjacent transmission units; The output end of the drive unit is connected to the input end of any of the transmission units, and is used to drive the corresponding transmission unit and transmit the driving force to the other transmission units through the power transmission unit.

3. The photovoltaic tracking bracket device as described in claim 2, characterized in that, The transmission unit includes a mounting base, a first bevel gear, a second bevel gear, and a bevel gear shaft; The mounting base is provided on the column; The bevel gear shaft passes through and is rotatably connected to the mounting base, and the input end of the bevel gear shaft is connected to the output end of the drive unit or the power transmission unit. The first bevel gear is mounted on the bevel gear shaft; The second bevel gear is located at the input end of the threaded linear transmission mechanism, and the second bevel gear meshes with the first bevel gear.

4. The photovoltaic tracking bracket device as described in claim 3, characterized in that, The power transmission unit includes a drive shaft and two universal couplings; The two universal joints are respectively located at both ends of the drive shaft, and the two universal joints are respectively connected to the corresponding bevel gear shaft.

5. The photovoltaic tracking bracket device as described in claim 1, characterized in that, It also includes a column connector; the first end of the column connector is fixedly connected to the main shaft of the external photovoltaic bracket; the second end of the column connector is provided with a central hole and several adjustment holes located around the central hole, and is bolted to the column through the central hole and several adjustment holes; The axis of the central hole is horizontally arranged and perpendicular to the axis of the main shaft of the external photovoltaic support.

6. The photovoltaic tracking bracket device as described in claim 1, characterized in that, It also includes the drive unit bracket; The drive unit is mounted on the drive unit bracket; The drive unit bracket is provided with an arc-shaped waist hole; the column is provided with several vertical waist holes; the drive unit bracket is bolted to the column through the arc-shaped waist hole and several vertical waist holes.

7. The photovoltaic tracking bracket device as described in claim 1, characterized in that, It also includes a spindle connecting plate, the two ends of which are respectively connected to the spindle of an adjacent external photovoltaic bracket.

8. The photovoltaic tracking bracket device as described in claim 1, characterized in that, The driving unit consists of several driving units respectively connected to the input end of the threaded linear transmission structure.

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