Flexible support photovoltaic tracking support with self-locking function

Abstract

The invention discloses a flexible support photovoltaic tracking support with a self-locking function. The flexible support photovoltaic tracking support comprises a photovoltaic module support frameused for fixing a photovoltaic module, a stand column used for supporting the photovoltaic module support frame, a transfer unit installed on the stand column, and a driving unit used for driving thetransfer unit to work. The transfer unit comprises a steel cable, a cable clamp, a differential winding wheel and a transmission case; the driving unit comprises a driving shaft and a drive and control device; and a self-locking structure is arranged between the driving shaft and the transmission case. Through multipoint cooperative driving, a driving load is uniformly applied to the tracking support to greatly reduce the torsional deformation of the whole structure, so that the tracking accuracy of the tracking support and the power generation efficiency of the photovoltaic module can be ensured; by adopting multi-point effective support, the vibration response of the structure under the action of wind load can be effectively reduced, and the safety and reliability of the tracking bracketare improved; and moreover, the position of each driving node is self-locked, so that the integral rigidity of the support structure and the stability and reliability of structure locking can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic solar power generation applications, in particular to a flexible supporting photovoltaic tracking bracket with a self-locking function. Background technique [0002] The solar automatic tracker can help solar photoelectric or photothermal devices (such as photovoltaic panels, etc.) to better receive sunlight to improve power generation efficiency, thereby reducing power generation costs. [0003] With the increasing proportion of photovoltaic power generation and a large number of engineering applications of solar tracking brackets, higher requirements are put forward for the safety and reliability of tracking brackets. One of the most important features of any type of solar photovoltaic support design scheme is that the structure must be strong and reliable, safe and reliable installation, able to withstand such as atmospheric erosion, wind loads and other external effects. In addition, in ...

AI Technical Summary

Problems solved by technology

[0005] 1) The overall torsional deformation of the support structure affects the tracking accuracy and reduces the power generation: Since the length of the overall support structure reaches more than 18 meters, when the linear or rotary driver drives the component plate to rotate around the axis, due to the existence of local elastic deformation of the structure, the driving torque It cannot evenly act on the overall structure, so that the driving rotation angle cannot be accurately transmitted to both ends of the support structure

At this time, the entire bracket structure is twisted and deformed, so that the photovoltaic module cannot be accurately aligned with the incident direction of the sun's rays, which affects the power generation of the photovoltaic module

[0006] 2) There is a lack of rigid support at the columns at both ends of the bracket: under the action of wind load, due to the influence of wind vibration effect, large-amplitude torsional vibration will be generated at both ends of each unit row. In order to reduce the structure caused by wind vibration effect Torsional vibration, it is necessary to install dampers at the two end columns of the support structure

The introduction of the damper increases the overall cost of the tracking bracket on the one hand, and on the other hand increases the complexity of the construction and installation process. In addition, the damper itself has a risk of failure and requires regular maintenance

From a functional point of view, the damper only responds to the dynamic velocity changes of the structure, and cannot effectively support slowly changing loads

[0007] 3) The self-locking position is single, and there are extremely high requirements for the strength of the locking structure and related installation structural parts: in this type of bracket form, the position self-locking function of the tracking bracket is realized by the driver or the corresponding reducer

In addition, since the tracking bracket is only self-locking in one place, most areas cannot achieve complete position locking, which will also greatly increase the overall safety and reliability risk of the tracking bracket under extreme weather conditions

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