阅读说明：本技术 一种多点支撑的光伏跟踪支架 (Photovoltaic tracking support that multiple spot supported ) 是由 黄丽琴 田君福 于 2020-06-28 设计创作，主要内容包括：本发明公开了一种多点支撑的光伏跟踪支架,涉及光伏支架技术领域,包括立柱、驱动装置、主梁、控制系统、制动臂和液压直线制动器,所述制动臂的一端与所述主梁固定,所述液压直线制动器的一端与制动臂的另一端铰接,所述液压直线制动器的另一端与所述立柱铰接,所述液压直线制动器可在直线方向伸缩,所述控制系统与液压直线制动器电连接,所述控制系统控制液压直线制动器处于锁止状态或自由状态。本发明公开的多点支撑的光伏跟踪支架,降低了主梁承受的扭矩,使主梁上的扭矩分布更均匀,更安全、更经济。(The invention discloses a multipoint-supported photovoltaic tracking support, which relates to the technical field of photovoltaic supports and comprises an upright post, a driving device, a main beam, a control system, a brake arm and a hydraulic linear brake, wherein one end of the brake arm is fixed with the main beam, one end of the hydraulic linear brake is hinged with the other end of the brake arm, the other end of the hydraulic linear brake is hinged with the upright post, the hydraulic linear brake can stretch in the linear direction, the control system is electrically connected with the hydraulic linear brake, and the control system controls the hydraulic linear brake to be in a locking state or a free state. The photovoltaic tracking support with the multi-point support, disclosed by the invention, has the advantages that the torque borne by the main beam is reduced, and the torque on the main beam is distributed more uniformly, more safely and more economically.)

1. The photovoltaic tracking support is characterized by further comprising a brake arm and a hydraulic linear brake, one end of the brake arm is fixed with the main beam, one end of the hydraulic linear brake is hinged to the other end of the brake arm, the other end of the hydraulic linear brake is hinged to the upright, the hydraulic linear brake can stretch in the linear direction, the control system is electrically connected with the hydraulic linear brake, and the control system controls the hydraulic linear brake to be in a locking state or a free state.

2. The multi-point supported photovoltaic tracking rack of claim 1, wherein the braking arms are secured to the main beams by hoops.

3. The multi-point supported photovoltaic tracking support according to claim 1, wherein a fixed base is fixedly arranged on the upright, the hydraulic linear brake is hinged to the fixed base, and the fixed base is spaced from the top end of the upright.

4. The multi-point supported photovoltaic tracking support according to claim 1, wherein the hydraulic linear brake comprises an outer tube, a piston, an inner tube, an oil tube and an oil solenoid valve, one end of the outer tube is closed and provided with a connector, the other end of the outer tube is provided with a through hole, the piston is arranged in the outer tube, the inner tube is slidably arranged in the through hole, the inner end of the inner tube is connected with the piston, the outer end of the inner tube is located outside the through hole, the outer end of the inner tube is provided with the connector, the oil tube is arranged outside the outer tube, the two ends of the oil tube are respectively communicated with the two ends of the outer tube, the oil solenoid valve is connected in series with the oil tube, and the.

5. The multi-point supported photovoltaic tracking support according to claim 4, wherein the connector is provided with a hinge hole for hinging.

6. The multi-point supported photovoltaic tracking support according to claim 4, wherein the control system can determine the operation mode of the tracking support according to the wind parameter signal fed back by the on-site wind speed and direction sensor: when the wind speed is lower than the set normal operation wind speed, the control system enables the driving device to drive the support to normally operate according to the received wind parameter signal and controls the oil-liquid electromagnetic valve to be conducted, and at the moment, the hydraulic linear brake can freely stretch and retract; when the wind speed is higher than the set normal operation wind speed, the control system firstly controls the driving device to operate to the set high wind angle according to the received wind parameter signal, and then controls the oil-liquid electromagnetic valve to be closed, so that the hydraulic linear brake is limited to freely stretch and retract, the main beam is limited to freely rotate, and the main beam is shared and resists wind twist.

7. The photovoltaic tracking support of multi-point support according to claim 1, wherein a plurality of purlins are arranged on the main beam, the purlins are arranged on the same plane of the main beam at intervals, and the purlins and the main beam are fixed through bolts.

8. The multi-point supported photovoltaic tracking support according to claim 1, wherein the driving device is a rotary speed reduction power device with a driving motor arranged in the middle of the main beam, and output shafts on two sides of the driving device and the main beam are fixed through bolts.

Technical Field

The invention relates to the technical field of photovoltaic supports, in particular to a multipoint-supported photovoltaic tracking support.

Background

When wind acts on the photovoltaic panel, the main beam is subjected to axial torque under the action of the wind, the torque is gradually accumulated to the driving device along the main beam, so that the driving device is subjected to large torque, and simultaneously, the torque on the main beam is also gradually accumulated, so that the main beam and the driving device are simultaneously subjected to large torque.

In the photovoltaic tracking support field, it is very important to reduce the destruction of wind-induced moment of torsion to the support girder.

The photovoltaic tracking support driven by the single point only can resist torque through the anti-torsion capability of the driving device and the driving upright column when in strong wind, and the tracking support braked by the single point is provided with only one middle fixed point in the main beam direction under the strong wind, so that the system is easy to shake, and resonance instability can be generated under extreme conditions. In order to reduce wind torsion, the torsion resistance of the main beam and the torque resistance of the driving device need to be improved, the mode is direct, the cost is high, the safety performance is low, and the bracket is easy to resonate and destabilize under strong wind.

The photovoltaic tracking support is driven by multiple points, multiple points are arranged on a main beam under normal wind speed, and driving force is provided; if each driving point is provided with an independent driving device, the synchronism of the control system has high requirement on the stability of the support, and once a certain driving is asynchronous, a main shaft of the support is damaged by torque; if a mechanical structure transmission shaft is used for transmission, each synchronous driving point is additionally provided with a long transmission shaft, so that the cost is high and the installation is inconvenient.

Disclosure of Invention

Therefore, the invention provides a multi-point supported photovoltaic tracking support, which aims to solve the problems that in the prior art, the torque distribution of a main beam of a photovoltaic tracking support driven by a single point is uneven, the torsion resistance is improved, and the cost is high.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

according to the first aspect of the invention, the multipoint-supported photovoltaic tracking support comprises an upright post, a driving device arranged at the top end of the upright post, a main beam connected with an output shaft of the driving device, a control system electrically connected with the driving device, a brake arm and a hydraulic linear brake, wherein one end of the brake arm is fixed with the main beam, one end of the hydraulic linear brake is hinged with the other end of the brake arm, the other end of the hydraulic linear brake is hinged with the upright post, the hydraulic linear brake can extend and retract in a linear direction, the control system is electrically connected with the hydraulic linear brake, and the control system controls the hydraulic linear brake to be in a locked state or a free state.

Furthermore, the brake arm is fixed with the main beam through a hoop.

Furthermore, a fixed seat is fixedly arranged on the upright column, the hydraulic linear brake is hinged to the fixed seat, and the fixed seat is away from the top end of the upright column by a certain distance.

Further, hydraulic pressure orthoscopic stopper includes outer tube, piston, inner tube, oil pipe and fluid solenoid valve, the one end of outer tube is sealed and is equipped with the connector, the other end of outer tube is equipped with the perforation, the piston set up in the outer tube, inner tube slidable set up in the perforation, the inner and the piston connection of inner tube, the outer end of inner tube is located outside the perforation, and the outer end of inner tube is equipped with the connector, oil pipe sets up outside the outer tube, oil pipe's both ends and respectively with the both ends intercommunication of outer tube, the fluid solenoid valve concatenates in oil pipe, just the fluid solenoid valve with the control system electricity is connected.

Further, the connector is provided with a hinge hole for hinging.

Further, the outer tube is of a split structure.

Further, a hole sealing structure is arranged at the position of the through hole.

Furthermore, a plurality of purlins are arranged on the main beam, the purlins are arranged on the same plane of the main beam at intervals, and the purlins and the main beam are fixed through bolts.

Furthermore, the driving device is a rotary speed reduction power device which is arranged in the middle of the main beam and is provided with a driving motor, and output shafts on two sides of the driving device are fixed with the main beam through bolts.

Further, the control system can judge the operation mode of the tracking support according to a wind parameter signal fed back by the field wind speed and direction sensor: when the wind speed is lower than the set normal operation wind speed, the control system enables the driving device to drive the support to normally operate according to the received wind parameter signal and controls the oil-liquid electromagnetic valve to be conducted, and at the moment, the hydraulic linear brake can freely stretch and retract; when the wind speed is higher than the set normal operation wind speed, the control system firstly controls the driving device to operate to the set high wind angle according to the received wind parameter signal, and then controls the oil-liquid electromagnetic valve to be closed, so that the hydraulic linear brake is limited to freely stretch and retract, the main beam is limited to freely rotate, and the main beam is shared and resists wind twist.

The invention has the following advantages:

according to the photovoltaic tracking support with the multi-point support, during normal tracking, the oil electromagnetic valve is conducted, oil in the hydraulic linear brake can freely flow, and the hydraulic linear brake can freely stretch and retract; in the wind resistance mode, the oil electromagnetic valve is closed, and oil in the hydraulic linear brake cannot flow freely, so that the extension and retraction of the hydraulic linear brake are limited. The hydraulic linear brake is in a limited telescopic state (locking state), so that the hydraulic linear brake can bear axial tension or compression force, the main beam is supported by the brake arm connected with the main beam, and wind torque generated by the main beam due to wind load is resisted, so that the torque on the main beam is dispersed, and the requirements on the torsion resistance of the main beam and the driving device are reduced. Compared with a tracking support with single-point driving and single-point fixed braking, the photovoltaic tracking support with multi-point support has the advantages that the torque borne by the main beam is reduced, the torque distribution on the main beam is more uniform, and the photovoltaic tracking support with multi-point support has a very wide market prospect in terms of safety and economy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.

Fig. 1 is a schematic structural diagram of a multi-point supporting photovoltaic tracking support provided in embodiment 1 of the present invention;

FIG. 2 is a schematic illustration of the installation of a hydraulic linear brake;

FIG. 3 is a schematic view of the connection of the driving device, the upright post and the main beam;

FIG. 4 is a schematic structural view of a hydraulic linear brake (with a housing);

FIG. 5 is a schematic diagram of the operation of the hydraulic linear brake;

FIG. 6 is a schematic view of the connection of the hydraulic linear brake to the brake arm;

FIG. 7 is a schematic view of the connection of the hydraulic linear brake to the column;

fig. 8 is a control schematic of the control system.

In the figure: the hydraulic linear brake system comprises a vertical column 1, a driving device 2, a main beam 3, a control system 4, a brake arm 5, a hydraulic linear brake 6, a purline 7, an anchor ear 8, an outer pipe 9, a piston 10, an inner pipe 11, an oil pipe 12, an oil electromagnetic valve 13, a connector 14, a wind speed and direction sensor 15 and a fixed seat 16.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.