CN114527801A - A locking system for photovoltaic tracking support - Google Patents
A locking system for photovoltaic tracking support Download PDFInfo
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- CN114527801A CN114527801A CN202111372208.2A CN202111372208A CN114527801A CN 114527801 A CN114527801 A CN 114527801A CN 202111372208 A CN202111372208 A CN 202111372208A CN 114527801 A CN114527801 A CN 114527801A
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- stopping
- main shaft
- stop
- arm
- base
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- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a stopping system for a photovoltaic tracking support, which comprises a main shaft, a driving upright post and a stopping upright post, wherein a driving device is arranged on the driving upright post, a stopping device is arranged on the stopping upright post, the main shaft is rotatably matched with the driving device and the stopping device, the stopping device comprises a main shaft base, stopping arms, a linear execution assembly and stopping pin shafts, the main shaft base is arranged on the stopping upright post, the stopping arms are positioned on two sides of the main shaft base, one end of each stopping arm is arranged on the main shaft, the other end of each stopping arm is provided with a stopping arm limiting hole, a base limiting hole is arranged on the main shaft base, the stopping pin shafts are hinged with the output end of the linear execution assembly, and the stopping system realizes a stopping function by matching the driving device and the linear execution assembly under different working states. The stop system has multi-point stop, can completely compare favorably with the common multi-point stop technical scheme on the market in technical effect, but has obviously lower cost.
Description
Technical Field
The invention relates to the field of photovoltaic tracking supports, in particular to a column stopping system for a support stand with overlarge wind torque generated under strong wind.
Background
The total solar radiation resources in China are very rich, and the solar power generation amount in China in 2020 is 261.1 Taiwatt hours, which is the first place in the global ranking. The operation modes of the existing common photovoltaic power station are roughly divided into 5 types: the optimal inclination angle is fixed, the optimal inclination angle is flat and single-axis tracking type, the optimal inclination angle is inclined and single-axis tracking type, the optimal inclination angle is double-axis tracking type, the optimal inclination angle is fixed and adjustable, and in the practical application process, the optimal inclination angle is generally higher than that of a fixed support by about 15% in the power generation amount and can reach 35% -43% at most.
At present, the most widely used flat single-shaft photovoltaic tracking support needs a driving device to drive a photovoltaic module to rotate from east to west by taking the north-south direction as an axis when the sunlight is normally tracked so as to obtain higher sunlight irradiation and improve the generated energy. China's photovoltaic equipment is applied to northwest in a large number, and when meetting bad strong wind weather, need drive arrangement to drive photovoltaic module and stop at a certain specific angle anti-wind, no longer normally trail sunshine to this can be better support the moment of torsion that the anti-wind load acted on photovoltaic module rotation main shaft, increased the protection to photovoltaic module.
In order to reduce the torsion and deformation of the rotating spindle, it is common practice to include a single drive, a multiple drive. The single driving device is usually matched with a damper for use, only the twisting degree of a rotating main shaft can be reduced, and the rotating freedom degree of the main shaft is completely limited only by the driving device, so when the torsional strength of the main shaft is designed and calculated, all wind-induced torques can be accumulated and concentrated at the driving device, the torsional section coefficient of the main shaft designed at the position is large, and the material waste is serious. And under the condition of strong wind, the multi-rotation driving device limits the rotation freedom degree of the main shaft by the driving devices at multiple points, disperses the torque on the main shaft and improves the integral rigidity of the tracking support. However, under the normal tracking condition, synchronous operation is needed among a plurality of gyrations, a transmission shaft or a cable is needed to be connected with each gyration for synchronous operation, the cost of the gyration is high, the number of driving devices is too many, the design is redundant, and the control of the cost of the tracking support is not facilitated.
In order to overcome the defects in the prior art, CN113037200A provides a hydraulic locking wind-resistant control system for a single-shaft photovoltaic tracker with two one-way electromagnetic valves, wherein a hydraulic locking device is arranged between a locking arm and an upright post to form a triangular structure of the locking device, the upright post and a braking arm, the triangular structure of the locking device, the upright post and the braking arm is maintained in the rotation process of a main shaft, and the rotation of the main shaft is limited by controlling the switch of the electromagnetic valve in the locking device to pass through the existing hydraulic oil path. However, if the hydraulic oil way leaks in the wind resistance process, the triangular stable structure of the support disappears, the photovoltaic module swings randomly along with strong wind, and huge hidden dangers exist for personnel safety and economic property loss.
Therefore, a highly reliable locking system for the photovoltaic tracking bracket is urgently needed.
Disclosure of Invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a detent system for a photovoltaic tracking rack.
In order to achieve the purpose, the invention provides the following technical scheme:
a stopping system for a photovoltaic tracking support comprises a main shaft, a driving stand column and a stopping stand column, wherein the main shaft is placed in the north-south direction and rotates from east to west by taking the central axis of the main shaft as a center according to a planned tracking path to track the sun, a driving device is installed at the top of the driving stand column, a stopping device is installed at the top of the stopping stand column, and the main shaft is respectively in rotatable fit with the driving device and the stopping device; the main shaft base is provided with a base limiting hole, one end of a stop pin shaft is hinged to the output end of the linear execution assembly, a stop position is arranged in the tracking path, the output end of the linear execution assembly needs to carry out rotation limitation on the main shaft, and the driving device drives the main shaft to reach the stop position and stretch out the stop pin shaft to be sequentially inserted into the stop arm limiting hole, the base limiting hole and the stop arm limiting hole.
Furthermore, the driving upright columns are located in the axial middle position of the main shaft, and the stopping upright columns are distributed at intervals or are arranged except the driving upright columns.
Furthermore, the stop arm comprises a stop arm hoop and a stop arm body, the stop arm is fixedly connected with the main shaft through the stop arm hoop, and the stop arm limiting hole is formed in the stop arm body.
Furthermore, the linear execution assembly comprises a linear actuator, a mounting seat and a hoop, the output end of the linear actuator is connected with the stop pin shaft, the linear actuator is mounted on the mounting seat, and the mounting seat is hinged with the hoop and is fixed on the main shaft and/or the upright post.
Furthermore, a connecting plate is arranged between the hoop and the stop arm and/or the main shaft base.
Furthermore, the other end of the stop pin shaft is conical.
Furthermore, the main shaft base is provided with a limiting block for limiting the rotation range of the main shaft.
Further, the limit block limits the rotation range of the main shaft to be not more than +/-70 degrees taking the central axis of the main shaft as a rotation axis.
Furthermore, upright post seats are arranged on two sides of the driving upright post and the stopping upright post.
The invention has the beneficial effects that:
the invention provides a plurality of linear execution assembly installation modes, and an end user can freely select the linear execution assembly according to actual conditions.
Compared with the prior art, the stopping device completely solves the problem of poor stability of functional parts of a common triangular stopping device, the stopping device provided by the invention is applied to the existing photovoltaic tracking support, the main shaft of the tracking support is in a multipoint stopping state under the condition of strong wind, the torque on the main shaft can be dispersed on the stopping pin shaft and simultaneously resisted, the torque load of the main shaft is reduced, the requirement on the torsion resistance of the main shaft is reduced, and the material cost of the main shaft is reduced. Meanwhile, after multi-point stopping, a plurality of stand columns resist the torque of the main shaft at the same time, so that the load of the stand columns is reduced compared with single-point stopping, and the cost of the stand columns is reduced.
Compared with a tracking support scheme adopting a plurality of driving devices to synchronously operate, the cost of the stopping system is far lower than the market price of one set of driving devices, and the cost of the tracking support can be obviously reduced by adopting the stopping system.
Drawings
In order to more clearly illustrate the embodiments of the 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, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic overall view of a tracking carriage to which the stopping system of the present invention is applied;
FIG. 2 is a schematic view of the stopping system drive, control unit of the present invention;
FIG. 3 is a schematic view of the detent system of the present invention;
FIG. 4 is a schematic view of the detent system of the present invention in a free state;
FIG. 5 is a schematic view of the detent system of the present invention in a detent state;
FIG. 6 is a schematic view of a spindle base according to an embodiment of the stopping system of the present invention;
FIG. 7 is a schematic view of a stopping arm of the stopping system of the present invention;
FIG. 8 is a schematic view of a second exemplary embodiment of a detent system according to the present invention;
FIG. 9 is a schematic view of a spindle base of a stopping system according to an embodiment of the present invention;
FIG. 10 is a schematic view of a second stopping arm of the stopping system of the present invention;
FIG. 11 is a schematic view of the range of spindle rotation for the retaining device of the present invention;
FIG. 12 is a schematic view of a linear actuator assembly of the stop system of the present invention;
FIG. 13 is a schematic view of the detent system bearing configuration of the present invention;
FIG. 14 is a schematic view of a retaining system post base of the present invention;
in the figure: 101 column seat, 102 driving column, 1021 driving device, 103 stopping column, 1031 stopping device, 1032 spindle base, 1033 bearing seat, 1034 limiting block, 1035 spindle base limiting hole, 20 spindle, 30 bearing, 40 stopping arm, 401 stopping arm hoop, 402 stopping arm body, 4021 stopping arm limiting hole, 50 linear executing component, 501 hoop, 502 mounting seat, 503 linear actuator, 60 stopping pin shaft, 70 connecting plate and 80 control unit.
Detailed Description
The present invention is described in detail below with reference to fig. 1-14.
In order to achieve the purpose, the invention provides the following technical scheme:
a stopping system for a photovoltaic tracking bracket comprises a main shaft 20, a driving upright post 102 and a stopping upright post 103, wherein a driving device 1021 is installed on the driving upright post 102, a stopping device 1031 is installed on the stopping upright post 103, the driving device 1021 and the stopping device 1031 are electrically connected to a control unit 80, and the main shaft 20 is rotatably matched with the driving device 1021 and the stopping device 1031. The stopping device 1031 includes a main shaft base 1032, stopping arms 40, a linear actuator 503 and stopping pins 60, the main shaft base 1032 is installed on the stopping column 103, the stopping arms 40 are located at two sides of the main shaft base 201, one end of each stopping arm is installed on the main shaft 20, the other end of each stopping arm is provided with a stopping arm limiting hole 4021, and the stopping pins 60 are hinged to the linear actuator 503.
The main shaft base 201 is provided with a bearing seat 1033, the bearing 30 is installed in the bearing seat 1033, the outer arc surface and the inner ring of the bearing 30 are concentrically matched, and the shape of the inner hole of the bearing 30 is matched with the shape of the main shaft 20, so that the rotary motion of the main shaft 20 is realized. The main shaft base 1032 is provided with a limit block 1034, when the main shaft 20 reaches the tracking maximum rotation angle, the limit block 1034 blocks the movement direction of the stop arm 40 to limit the further rotation movement of the main shaft 20, thereby protecting the system structure, and the limit block 1034 makes the rotation range of the main shaft 20 not exceed ± 70 ° taking the central axis of the main shaft 20 as the rotation axis. The main shaft base 1032 is further provided with a main shaft base limiting hole, and the main shaft base limiting hole is used for being matched with the stop pin shaft 60 and the stop arm limiting hole 4021 in a stop state, so that the rotation movement of the stop arm 40 is limited.
The upright seats 101 are arranged on two sides of the driving upright 102 and the stopping upright 103, so that the spindle base 201, the driving upright 102 and the stopping upright 103 can be conveniently arranged.
The stop arm 40 is composed of a stop arm hoop 401 and a stop arm body 402, and the stop arm body 402 is provided with a stop arm limiting hole 4021.
The linear actuator assembly 50 comprises a hoop 501, a mounting seat 502 and a linear actuator 503, wherein the output end of the linear actuator 503 is hinged with one end of the stop pin shaft 60, and the linear actuator 503 controls the stop pin shaft 60 to pass through and exit from the stop arm limiting hole 4021 and the main shaft base limiting hole 1035.
In an embodiment of the present invention, the linear actuator 50 is mounted on the stopping column 103, and a connecting plate 70 is mounted between the hoop 501 and the spindle base 201 for fixing the position between the linear actuator 50 and the spindle base 201, so as to prevent the stopping pin 60 from falling off during the mounting and stopping processes.
In another embodiment of the present invention, the linear actuator 50 is mounted on the main shaft 20, and a connecting plate 70 is mounted between the hoop 501 and the stop arm hoop 401 for fixing the position between the linear actuator 50 and the stop arm 40, so as to prevent the stop pin 60 from falling off during the mounting and stopping processes.
In another embodiment of the present invention, the linear actuator 50 is respectively mounted on the main shaft 20 and the stopping column 103, and a connection plate 70 is mounted between the linear actuator mounting hoop 501 mounted on the main shaft 20 and the stopping arm hoop 401 for fixing the position between the linear actuator 50 and the stopping arm 40; a connecting plate 70 is arranged between the linear actuator mounting hoop 501 arranged on the stopping upright post 103 and the main shaft base 201 and is used for fixing the position between the linear actuator assembly 50 and the main shaft base 201; the connecting plate 70 is used for preventing the stop pin 60 from falling off during the installation and stopping processes. From the stopping effect, the rotation of the main shaft 20 is limited in the transverse direction and the longitudinal direction, the wind resistance is further improved, the stopping effect is more obvious, and the system safety is higher.
The stop pin 60 has a cylindrical structure as a whole, one end of the stop pin 60 is provided with a hole connected with the output end of the linear actuator 503, and the other end of the stop pin is conical, so that the stop pin can be conveniently inserted into the stop arm limiting hole 4021 and the main shaft base limiting hole 1035 in a guiding manner.
Example one
A stop device for a photovoltaic tracking bracket is characterized in that a linear actuating assembly 50 is installed on a stop upright post 103, when a stop system is in a free state, a control unit 80 enables a driving device 1021 to rotate a main shaft 20, a linear actuator 503 is in a contraction state, and a stop pin shaft 60 is not inserted into a stop arm limiting hole 4021, a main shaft base limiting hole 1035 and a stop arm limiting hole 4021 in sequence. At this time, the main shaft 20 is in a freely rotatable state, and under the action of the limiting block 1034 on the main shaft base 1032, the freely rotatable range of the main shaft 20 does not exceed the range of ± 70 ° around the central axis of the main shaft; when stopping is needed in windy weather, the control unit 80 causes the driving device 1021 to rotate the main shaft 20 to a preset stopping position and then stop, and the control unit 80 causes the output end of the linear actuator 503 to drive the stopping pin shaft 60 to sequentially insert into the stopping arm limiting hole 4021, the main shaft base limiting hole 1035 and the stopping arm limiting hole 4021 and then stop; when the free state needs to be recovered after the strong wind, the control unit 80 makes the linear actuator 503 contract the push rod to drive the stop pin shaft 60 to sequentially exit the stop arm limiting hole 4021, the main shaft base limiting hole 1035 and the stop arm limiting hole 4021, the control unit 80 makes the driving device 1021 drive the main shaft 20 to rotate, and at this time, the main shaft 20 is in the free state and can continue to execute the photovoltaic tracking.
Example two
The difference from the first embodiment is that the linear actuator assembly 50 is mounted on the main shaft 20, and the operation principle is the same as that of the first embodiment.
EXAMPLE III
The third embodiment combines the first embodiment with the second embodiment, that is, the linear actuators 50 are respectively installed on the main shaft 20 and the two sides of the upright post 10, and the operation principle is the same as that of the first embodiment.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. A stopping system for a photovoltaic tracking support comprises a main shaft, a driving stand column and a stopping stand column, wherein the main shaft is placed in the north-south direction and rotates from east to west by taking the central axis of the main shaft as a center according to a planned tracking path to track the sun, a driving device is installed at the top of the driving stand column, a stopping device is installed at the top of the stopping stand column, and the main shaft is respectively in rotatable fit with the driving device and the stopping device; the main shaft base is provided with a base limiting hole, one end of a stop pin shaft is hinged to the output end of the linear execution assembly, a stop position is arranged in the tracking path, the output end of the linear execution assembly needs to carry out rotation limitation on the main shaft, and the driving device drives the main shaft to reach the stop position and stretch out the stop pin shaft to be sequentially inserted into the stop arm limiting hole, the base limiting hole and the stop arm limiting hole.
2. The stop system according to claim 1, wherein said drive post is located at an axially intermediate position of said spindle, and said stop posts are spaced apart or disposed in addition to said drive post.
3. The detent system according to claim 1, wherein said detent arm includes a detent arm anchor and a detent arm body, said detent arm being fixedly coupled to said spindle through said detent arm anchor, said detent arm retaining aperture being formed in said detent arm body.
4. The stop system according to claim 1, wherein the linear actuator assembly comprises a linear actuator, a mounting seat and a hoop, the output end of the linear actuator is hinged with the stop pin shaft, the linear actuator is mounted on the mounting seat, and the mounting seat is hinged with the hoop and fixed on the main shaft and/or the upright.
5. The stop system according to claim 4, wherein a web is mounted between said anchor ear and said stop arm and/or said spindle base.
6. The retainer system of claim 1, wherein the other end of the retainer pin is conically shaped.
7. The stop system according to claim 1, wherein the spindle base is provided with a stopper limiting a rotation range of the spindle.
8. The stop system according to claim 7, wherein the stop limits the range of rotation of the spindle to no more than ± 70 ° about the central axis of the spindle.
9. The retainer system of claim 1, wherein the drive post and the retainer post are provided with post holders on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372208.2A CN114527801A (en) | 2021-11-18 | 2021-11-18 | A locking system for photovoltaic tracking support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372208.2A CN114527801A (en) | 2021-11-18 | 2021-11-18 | A locking system for photovoltaic tracking support |
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| Publication Number | Publication Date |
|---|---|
| CN114527801A true CN114527801A (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111372208.2A Pending CN114527801A (en) | 2021-11-18 | 2021-11-18 | A locking system for photovoltaic tracking support |
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| CN (1) | CN114527801A (en) |
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| CN210565912U (en) * | 2019-08-20 | 2020-05-19 | 浙江正泰新能源开发有限公司 | Photovoltaic tracker bearing structure with automatic locking device |
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- 2021-11-18 CN CN202111372208.2A patent/CN114527801A/en active Pending
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| CN101539343A (en) * | 2009-04-14 | 2009-09-23 | 杨天博 | Non-intermittent real-time tracking solar energy light collecting drive mechanism and working method thereof |
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