CN215452860U

CN215452860U - Multi-point driven flat single-shaft photovoltaic tracking support device

Info

Publication number: CN215452860U
Application number: CN202121679344.1U
Authority: CN
Inventors: 林明坚; 余松秦; 李翔
Original assignee: Xiamen Kewei Intelligent Technology Co ltd
Current assignee: Xiamen Kesheng New Energy Co.,Ltd.
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-07
Anticipated expiration: 2031-07-23

Abstract

A multi-point driven flat single-shaft photovoltaic tracking support device comprises a group of unit tracking devices or more than one group of unit tracking devices, wherein each unit tracking device comprises a main shaft, a plurality of longitudinal beams sequentially distributed on the main shaft in parallel, a plurality of driving upright columns and common upright columns supported on the main shaft, and a plurality of electric push rods and a plurality of dampers which are arranged on the main shaft through swing arms; the driving upright post and the common upright post are arranged on the main shaft in a crossed mode; the utility model adopts a plurality of electric push rods for driving, and because the electric push rods are internally provided with the upper limiting sensor and the lower limiting sensor, and simultaneously each driving point execution end is provided with the signal execution sensor, the signal execution sensors receive execution signals and are linked and interlocked to carry out closed-loop control through electronics and communication, the self-checking performance of the system is improved, the stability of the whole system is better, and intelligent control is realized.

Description

Multi-point driven flat single-shaft photovoltaic tracking support device

Technical Field

The utility model belongs to the technical field of solar photovoltaic frames, and particularly relates to a multi-point driven flat single-shaft photovoltaic tracking support device capable of automatically rotating.

Background

China proposes that the carbon neutralization standard is achieved in 2050 years, the photovoltaic industry becomes one of the most important new energy industries under the carbon neutralization background, and the photovoltaic tracking system is widely applied. Meanwhile, with the continuous increase of the size of the photovoltaic module, the application of the multi-point driving photovoltaic tracking system is promoted, and the tracking precision, the adaptability to severe environments, the mechanical property of a support bearing load, the self-checking capability of system faults, the reliability of the system and the like are higher requirements. At present, tracking supports in the industry are mostly advocated for single-point driving photovoltaic tracking systems and multi-point driving photovoltaic tracking systems.

Conventional single point drive photovoltaic tracking systems typically employ a swing drive (or power-driven pushrod). The scheme has the inevitable defects of large torsion angle of the main shafts at two ends of the unit and poor tracking precision. For areas with high wind pressure, the self-locking capability of the wind power generator is not as stable as that of a multipoint driving scheme. Due to the fact that the frequency and the damping ratio of the wind turbine are relatively low, large-angle array torsion damage is prone to occur under the critical wind speed.

The traditional multi-point driving photovoltaic tracking system usually adopts a plurality of rotary speed reducers (or electric push rods), and one motor drives the rotary speed reducers (or electric push rods) to transmit torque through a connecting rod so as to enable other rotary speed reducers (or electric push rods) to work. The connecting rod can be twisted by a certain angle when transmitting torque, so that a large error exists in the angle of the multi-point driving position. Meanwhile, the traditional multipoint driving scheme belongs to open-loop control, and if abnormity occurs in a transmission chain, the whole tracking system is easy to damage.

The problem of photovoltaic tracking support collapse is frequently found in recent years, the wind speed does not reach the wind speed design value when the photovoltaic tracking support collapses, but the photovoltaic array is damaged due to low wind speed, the multi-electric push rod driven flat single-shaft tracking system is driven by a plurality of push rods, meanwhile, dampers are additionally arranged according to different working conditions, the vibration amplitude of the photovoltaic array can be obviously reduced, and the stability of the photovoltaic system is greatly improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a multi-point driven flat single-shaft photovoltaic tracking support device with a plurality of electric push rods for simultaneously driving one unit to track.

The utility model is realized by the following technical scheme: the utility model provides a flat unipolar photovoltaic tracking support device of multiple spot drive, is including a set of unit tracking means or a set of above unit tracking means, its characterized in that: the unit tracking device comprises a main shaft, a plurality of longitudinal beams, a plurality of driving upright columns and common upright columns, wherein the longitudinal beams are sequentially distributed on the main shaft in parallel, the driving upright columns and the common upright columns are supported on the main shaft, and a plurality of electric push rods and a plurality of dampers are arranged on the main shaft through swing arms; the driving upright columns and the common upright columns are arranged on the main shaft in a spaced and staggered mode.

One end of the damper is installed on the main shaft, and the other end of the damper is installed on the common upright post.

One end of the electric push rod is arranged on the main shaft through the swing arm, and the other end of the electric push rod is arranged on the driving upright post.

The main shaft and the swing arm are close to and are sequentially provided with a signal execution sensor, the electric push rod is internally provided with a motor and an upper limiting sensor and a lower limiting sensor, and the signal execution sensor is electrically connected with the electric push rod.

The driving upright column, the common upright column and the main shaft are supporting devices.

Several electric push rods are driving devices.

The utility model has the beneficial effects that compared with the prior art, the utility model adopts a plurality of electric push rods for driving, because the electric push rods are internally provided with the upper and lower limit sensors, and simultaneously, each driving point execution end is provided with the signal execution sensor which receives the execution signal and is linked and interlocked to carry out closed-loop control through electronics and communication, the self-checking performance of the system is improved, the stability of the whole system is better, and intelligent control is realized.

Each unit tracking device is provided with a plurality of electric push rods, so that the driving force points are increased, the structural frequency, the damping ratio and the system rigidity are improved, the component amplitude can be reduced, the wind resistance is improved, the system tracking precision is improved, and the power station benefit is improved.

Each unit tracking device can be equipped with one or more dampers according to different load working conditions, so that the vibration amplitude of the photovoltaic array can be obviously reduced, and the stability of the photovoltaic system is greatly improved.

Drawings

The utility model is described in detail below with reference to the attached drawing figures:

FIG. 1 is a schematic diagram of a set of unit tracking devices according to the present invention.

Fig. 2 is a side view of fig. 1.

The following are specific names of the various identifiers in the figure: 1. a main shaft; 2. a stringer; 3. a signal execution sensor; 4. swinging arms; 5. driving the upright post; 6. an electric push rod; 7. a common upright post; 8. a damper.

Detailed Description

As shown in fig. 1 to 2, a multi-point driven flat single-axis photovoltaic tracking support device includes a group of unit tracking devices or more than one group of unit tracking devices.

The unit tracking device comprises a main shaft 1 and a plurality of longitudinal beams 2 sequentially distributed on the main shaft 1 in parallel, wherein the longitudinal beams are used for placing a photovoltaic panel, and a plurality of driving upright columns 5 and common upright columns 7 supported on the main shaft 1; a plurality of electric push rods 6 arranged on the main shaft 1 through a swing arm 4, and a plurality of dampers 8 with shockproof function arranged on the main shaft 1; the driving upright columns 5 and the common upright columns 7 are arranged on the main shaft 1 in a spaced and staggered mode. The driving upright post 5, the common upright post 7 and the main shaft 1 are supporting devices, and the electric push rods 6 are driving devices; the driving force is multiplied, and the photovoltaic module can adapt to the specification of a wider range, so that the power generation benefit is improved.

By adopting two or more electric push rods 6, the stress of the array is dispersed to two or more, and the electric push rods are in linkage interlocking closed-loop control in an electronic and communication mode, so that the problem of main shaft distortion instability caused by overlong array can be effectively solved.

One end of the damper 8 is installed on the main shaft 1, the other end of the damper is installed on the common upright post 7, the damper 8 is adopted to reduce the amplitude of the assembly, and the stability of the system is improved.

One end of the electric push rod 6 is arranged on the main shaft 1 through the swing arm 4, and the other end is arranged on the driving upright post 5; the electric push rod 6 is driven by a built-in motor to do telescopic motion to drive the swing arm and the main shaft to rotate, so that the photovoltaic panel arranged on the longitudinal beam is adjusted and rotated at a certain angle according to the illumination angle, and the signal capture of the illumination angle depends on the signal execution sensor 3.

A signal execution sensor 3 is sequentially arranged on the main shaft 1 and close to the swing arm 4, a motor and an upper and lower limit sensor are arranged in the electric push rod 6, and the signal execution sensor 3 is electrically connected with the electric push rod 6; the electric push rod 6 is internally provided with an upper limiting sensor and a lower limiting sensor, so that the fault that the structural part is damaged due to stroke out-of-tolerance caused by misoperation is avoided. Meanwhile, each driving point execution end is provided with a signal execution sensor, the signal execution sensors 3 acquire the state of the point and perform interlocking control through electronic and communication linkage, and the control box combines the data of the upper limit sensor and the lower limit sensor of the electric push rod and the signal execution sensors of the execution ends to intelligently control the tracking array.

The driving mode of the photovoltaic panel driving device is that a large-scale photovoltaic panel is installed on a longitudinal beam 2, the longitudinal beam 2 is sequentially fixed on a main shaft 1, and the rotation of the main shaft 1 drives the photovoltaic panel to rotate; the driving force of the rotation of the main shaft comes from the driving force of a built-in motor of the electric push rod; and the instruction electric push rod rotates by means of a signal execution sensor 3 arranged on the main shaft 1, and signal transmission is executed according to the illumination angle.

Claims

1. A multi-point driven flat single-shaft photovoltaic tracking support device comprises a group of unit tracking devices or more than one group of unit tracking devices, and is characterized in that each unit tracking device comprises a main shaft, a plurality of longitudinal beams sequentially distributed on the main shaft in parallel, a plurality of driving upright columns and common upright columns supported on the main shaft, and a plurality of electric push rods and a plurality of dampers which are arranged on the main shaft through swing arms; the driving upright post and the common upright post are arranged on the main shaft in a crossed mode.

2. The multi-point driven flat single-shaft photovoltaic tracking support device according to claim 1, wherein the damper is mounted on the main shaft at one end and on a common upright at the other end.

3. The multi-point driven flat uniaxial photovoltaic tracking support device as claimed in claim 1, wherein one end of the electric push rod is mounted on the main shaft through the swing arm, the other end of the electric push rod is mounted on the driving upright post, and the electric push rod is a driving device.

4. The multi-point driven flat single-shaft photovoltaic tracking support device as claimed in claim 1 or 3, wherein the electric push rod is a driving device, a signal execution sensor is sequentially installed on the main shaft close to the swing arm, a motor and an upper and lower limit sensor are arranged in the electric push rod, and the signal execution sensor is electrically connected with the electric push rod.