CN206948241U - A kind of novel photovoltaic flexible support - Google Patents
A kind of novel photovoltaic flexible support Download PDFInfo
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- CN206948241U CN206948241U CN201720900779.1U CN201720900779U CN206948241U CN 206948241 U CN206948241 U CN 206948241U CN 201720900779 U CN201720900779 U CN 201720900779U CN 206948241 U CN206948241 U CN 206948241U
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- prestressing force
- force drawstring
- drawstring
- steel
- steel component
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- 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
A kind of novel photovoltaic flexible support is the utility model is related to, belongs to crystal silicon photovoltaic technical field, it includes two the first steel components, the multiple second steel groups being placed between two the first steel components, and the more prestressing force drawstrings be arrangeding in parallel；It is parallel to each other between two the first steel components, and the first steel member parallel is in multiple second steel components；Every prestressing force drawstring is sequentially connected to multiple second steel components, and the both ends of every prestressing force drawstring are individually fixed on two the first steel components；Spaced prestressing force drawstring is located in same level；The prestressing force drawstring being disposed adjacent is located on different horizontal planes.The utility model is by the way that prestressing force drawstring to be arranged to the diverse location of the first steel component, between adjacent prestressing force drawstring on different horizontal planes, so as to realize the difference of the height between adjacent prestressing force drawstring, so that being transferred to moment of torsion on the first steel component can cancel out each other, and then simplify the stressing conditions of the node of the first steel component.
Description
Technical field
It the utility model is related to crystal silicon photovoltaic technical field, more particularly to a kind of novel photovoltaic flexible support.
Background technology
In the prior art, when installing crystal silicon photovoltaic, the both ends of prestressing force drawstring are both secured to two steel be arrangeding in parallel
The top (the small steel column of fixed prestressing force drawstring is respectively positioned on the top of first crossbeam) of the crossbeam of batter post, this can pass to crossbeam
Very big moment of torsion so that steel batter post and position of joints bear larger moment of flexure, and the power can not be offset, and can only be cut by increasing component
Area come bear the power and increase structure security and stability.
The setting of existing prestressing force drawstring make it that steel inclined-column nodes stress is larger and stress is complicated, while in order to resist this
Moment of flexure, steel batter post must have enough sectional dimension and the moment of inertia, steel batter post upper cross-beam must have enough sectional areas and
Antitorque, anti-bending strength, while basis must have enough anti-torsions to topple ability, so that when manufacturing steel construction, use steel
Amount greatly increases, so as to add production cost.
Utility model content
The purpose of this utility model is to propose a kind of novel photovoltaic flexible support, optimization prestressing force drawstring fixing point and horizontal stroke
The position relationship of beam, optimize structure stress and mode of transfer force, saving steel, reduction are reduced to reach by the optimization to steel construction
Steel construction and its cost on basis, while for the purpose of increasing security, reliability, stability of structure etc..
To use following technical scheme up to this purpose, the utility model：
A kind of novel photovoltaic flexible support, including two the first steel components, be placed between two the first steel components
Multiple second steel components and the more prestressing force drawstrings be arrangeding in parallel；
Two the first steel components are parallel to each other, and the first steel member parallel is in multiple second steel components；
The every prestressing force drawstring is sequentially connected to multiple second steel components, and every prestressing force drawstring
Both ends are individually fixed on two the first steel components；
The spaced prestressing force drawstring is located in same level；The prestressing force drawstring being disposed adjacent is located at
On different horizontal planes.
Further, the prestressing force drawstring includes the first prestressing force drawstring and the second prestressing force drawstring, and described first is pre-
Stress drawstring is in same level；The second prestressing force drawstring is in same level；
The first prestressing force drawstring and the second prestressing force drawstring are arranged at intervals and the first prestressing force drawstring
Positioned at the top of the second prestressing force drawstring.
Further, the first steel component includes multiple oblique steel columns be arrangeding in parallel and is sequentially connected to multiple described oblique
The first crossbeam of steel column；
Upper pillar stand and lower pillar stand respectively above and below the first crossbeam is set on the first crossbeam；
The upper pillar stand of two first crossbeams is fixed at the both ends of the first prestressing force drawstring；
The lower pillar stand of two first crossbeams is fixed at the both ends of the second prestressing force drawstring.
Further, the upper pillar stand is fixed on away from described in the both ends of the first prestressing force drawstring by pad anchorage
The side of second steel component；
The lower pillar stand is fixed on away from the second steel group in the both ends of the second prestressing force drawstring by pad anchorage
The side of part.
Further, the second steel component includes multiple montants be arrangeding in parallel and is vertically connected at the of the montant successively
Two crossbeams；
The second cross beam is H profile steel；
The first prestressing force drawstring passes through the second cross beam, and the second prestressing force drawstring is connected by U-shaped anchor ear
In the lower section of the second cross beam.
Further, the U-shaped anchor ear includes U-bolt and line card, is formed between the U-bolt and the line card solid
Determine hole, the second prestressing force drawstring passes through the fixing hole.
Further, in addition to it is respectively perpendicular and is connected to the first prestressing force drawstring and the second prestressing force drawstring
First steadying line and the second steadying line；
It is provided between the first steel component and the second steel component and between the adjacent second steel component more
First steadying line described in root, first steadying line are sequentially connected to each first prestressing force drawstring；
It is provided between the first steel component and the second steel component and between the adjacent second steel component more
Second steadying line described in root, second steadying line are sequentially connected to each second prestressing force drawstring.
Further, first steadying line and second steadying line are snapped connection by the first buckle and second respectively
In the first prestressing force drawstring and the second prestressing force drawstring；
First buckle and the second buckle include fixed plate and two U-shaped folders, the both ends difference of two U-shaped folders
It is fixed in fixed plate.
Further, the first prestressing force drawstring sequentially passes through two U-shaped folders of first buckle, and described
Space of one steadying line through two U-shaped folders of first buckle is simultaneously arranged at the first prestressing force drawstring
Top；
The second prestressing force drawstring sequentially passes through two U-shaped folders of second buckle, second steadying line
Space through two U-shaped folders of second buckle is simultaneously arranged at the top of the second prestressing force drawstring.
Further, each first steadying line is located on same vertical plane with second steadying line；
In the case where not considering sag, tell that the first steadying line is parallel to each other and in the same plane；Described second
Steadying line is parallel to each other and in the same plane；And the plane where first steadying line and putting down where the second steadying line
Face is parallel to each other.
Beneficial effect：
The utility model by the way that prestressing force drawstring to be arranged to the diverse location of the first steel component, adjacent prestressing force drawstring it
Between on the different horizontal planes (respectively positioned at the top of first crossbeam, lower section, in height using the axial line of first crossbeam as
Symmetry axis, arrangement symmetrical above and below) so that being transferred to moment of torsion on the first steel component can cancel out each other, and then simplify
The stress and mode of transfer force of the node of one steel component, further, since the stress of the first steel component is simplified, so as to reduce
One steel component and associated components sectional dimension, reduce basic anti-torsion and topple power design load, to reach steel material saving, basic expense
With the purpose of reduction.
Brief description of the drawings
Fig. 1 is the structural representation of novel photovoltaic flexible support provided by the utility model；
Fig. 2 is the structural representation of the first crossbeam of novel photovoltaic flexible support provided by the utility model；
Fig. 3 is the structural representation of the second cross beam of novel photovoltaic flexible support provided by the utility model；
Fig. 4 is the structural representation that the second prestressing force drawstring provided by the utility model is connected to second cross beam；
Fig. 5 is the front view that the first steadying line provided by the utility model is connected to the first prestressing force drawstring；
Fig. 6 is the side view that the first steadying line provided by the utility model is connected to the first prestressing force drawstring；
Fig. 7 is the front view that the second steadying line provided by the utility model is connected to the second prestressing force drawstring；
Fig. 8 is the side view that the second steadying line provided by the utility model is connected to the second prestressing force drawstring；
Fig. 9 is the structural representation that the first prestressing force drawstring provided by the utility model is connected to first crossbeam；
Figure 10 is the structural representation that the second prestressing force drawstring provided by the utility model is connected to first crossbeam.
In figure：
1st, the first steel component；11st, oblique steel column；12nd, first crossbeam；121st, upper pillar stand；122nd, lower pillar stand；
2nd, the second steel component；21st, montant；22nd, second cross beam；
3rd, prestressing force drawstring；31st, the first prestressing force drawstring；32nd, the second prestressing force drawstring；
4th, pad anchorage；41st, intermediate plate；42nd, anchor ring；43rd, pad；
5th, U-shaped anchor ear；51st, U-bolt；52nd, line card；521st, limiting plate；522nd, spacing preiection；53rd, fixing hole；
61st, the first steadying line；62nd, the second steadying line；
71st, the first buckle；72nd, the second buckle；8th, fixed plate；9th, U-shaped folder.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings and pass through
Embodiment further illustrates the technical solution of the utility model.
A kind of novel photovoltaic flexible support is present embodiments provided, as shown in Fig. 1-Fig. 9, including two the first steel components 1,
The multiple second steel components 2 and the more prestressing force drawstrings 3 be arrangeding in parallel being placed between two the first steel components 1；Two
The first steel component 1 is parallel to each other, and the first steel component 1 is parallel to multiple second steel components 2；Every described pre-
Stress drawstring 3 is sequentially connected to multiple second steel components 2, and the both ends of the every prestressing force drawstring 3 are individually fixed in
On two the first steel components 1；The spaced prestressing force drawstring 3 is located in same level；The institute being disposed adjacent
Prestressing force drawstring 3 is stated to be located on different horizontal planes.
The present embodiment is by the way that prestressing force drawstring 3 to be arranged to the diverse location of the first steel component 1, adjacent prestressing force drawstring 3
On different horizontal planes, so as to realize the difference of the height between adjacent prestressing force drawstring, so that being transferred to the first steel
Moment of torsion can cancel out each other on component 1, and then simplify the stressing conditions of the node of the first steel component 1, further, since the first steel group
The stress of part 1 is simplified, so as to which the intensity to the first steel component 1, rigidity requirement reduce, and then reduce the first steel component 1
Steel using amount during production.
Above-mentioned prestressing force drawstring includes the first prestressing force drawstring and the second prestressing force drawstring 32, the first prestressing force drawstring
31 in same level；The second prestressing force drawstring 32 is in same level；The first prestressing force drawstring 31 with
The second prestressing force drawstring 32 is arranged at intervals and the first prestressing force drawstring 31 is located at the second prestressing force drawstring 32
Top, the first prestressing force drawstring 31 and the second prestressing force drawstring 32 are in straight condition.Wherein, the both sides installation of photovoltaic silicon wafer
In on the first prestressing force drawstring 31 and the second prestressing force drawstring 32.In the production process of reality, the He of the first prestressing force drawstring 31
Second prestressing force drawstring 32 is set along east-west direction, when the first prestressing force drawstring 31 is higher than the second prestressing force drawstring 32, light
Volt silicon chip is obliquely installed, and Souteern Exposure so that the inclination angle of photovoltaic silicon wafer is with designing inclination angle (or optimum angle of incidence) unanimously, and inclination angle
Angular deviation meets code requirement, so as to ensure the generating efficiency of photovoltaic plant and generated energy.
Above-mentioned first steel component 1 includes multiple oblique steel columns 11 be arrangeding in parallel and is sequentially connected to multiple tiltedly steel columns 11
First crossbeam 12.Upper pillar stand 121 respectively above and below the first crossbeam 12 is set on the first crossbeam 12
And lower pillar stand 122, the center of the first crossbeam 12 are equal to the described first horizontal stroke with the distance at the center of the upper pillar stand 121 respectively
Distance of the center of beam 12 to the center of lower pillar stand 122；The both ends of the first prestressing force drawstring 31 are fixed on two described
The upper pillar stand 121 of one crossbeam 12；The both ends of the second prestressing force drawstring 32 are fixed on two the lower of the first crossbeam 12 and stood
Post 122.The present embodiment is by the way that the first prestressing force drawstring 31 and the second prestressing force drawstring 32 to be arranged to the top of first crossbeam 12
And lower section, the stressing conditions of first crossbeam 12 are optimized, the first prestressing force drawstring 31 and the second prestressing force drawstring 32 are uniform respectively
It is distributed in above and below first crossbeam 12, first crossbeam 12 is in the first prestressing force drawstring 31 and the second prestressing force drawstring 32
In the presence of prestressing force so that the first prestressing force drawstring 31 and the second prestressing force drawstring 32 pass to the power of the first steel component 1 with
Based on the pulling force of horizontal direction, moment of flexure is reduced, the joints of first crossbeam 12 are also simplified.
In addition, after the structure optimization of first crossbeam 12, more rolled steel dosage can be saved, so as to reach optimization design and section
The about purpose of cost.Wherein, rolled steel dosage, which is saved, mainly includes the following aspects：The sectional dimension of first crossbeam 12 diminishes and saved
About steel；The stress of first steel component 1 is smaller, and the oblique sectional dimension of steel column 11 diminishes and saving steel；Upper pillar stand 121 and lower pillar stand
122 size has obtained optimization so as to reach the effect of saving steel.
The upper pillar stand 121 is fixed on away from described in the both ends of the first prestressing force drawstring 31 by pad anchorage 4
The side of two steel components 2；It is remote that the lower pillar stand 122 by pad anchorage 4 is fixed in the both ends of the second prestressing force drawstring 32
From the side of the second steel component 2.Wherein, the pad anchorage 4 includes the intermediate plate 41 of pyramidal structure, is sheathed on the intermediate plate
Anchor ring 42 outside 41 and the pad 43 for being arranged at described one end of anchor ring 42, wherein, when the first prestressing force drawstring 31 and with pad anchor
During the connection of tool 4, the first prestressing force drawstring 31 mutually extrudes that pad 43 is pressed on upper pillar stand 121 remote with intermediate plate 41 by frictional force
From the side of the second steel component 121；When the second prestressing force drawstring 32 and when being connected with pad anchorage 4, the second prestressing force is drawn
Rope 32 is mutually extruded with intermediate plate 41 by frictional force makes pad 43 press on one of lower pillar stand 122 away from the second steel component 2
Side.The pad anchorage 4 provided in the present embodiment ensure that the first prestressing force drawstring 31 and the second prestressing force drawstring 32 can only be along one
Individual direction stretching, so that the first prestressing force drawstring 31 and the second prestressing force drawstring 32 can be tensioned well, effectively
Ground avoids loose situation and occurred.
Second steel component 2 includes multiple montants 21 be arrangeding in parallel and is vertically connected at the second horizontal stroke of the montant 21 successively
Beam 22；Wherein second cross beam 22 is H profile steel, and the first prestressing force drawstring 31 passes through the web of the second cross beam 22, described
Second prestressing force drawstring 32 is connected to the lower section of the bottom wing listrium of the second cross beam 22 by U-shaped anchor ear 5.U-shaped anchor ear 5 passes through
Nut is fixed on the lower section of the lower wing plate of second cross beam 22.
The U-shaped anchor ear 5 includes U-bolt 51 and line card 52, and the both ends of the U-bolt 51 pass through the line card 52
Bolt hole, space is provided between the U-bolt 51 and line card 52, the space forms fixing hole 53, and described second in advance should
Power drawstring 32 passes through the fixing hole 53.The line card 52 includes limiting plate 521, and the both sides projection of the limiting plate 521 is limited
Position projection 522, is provided with gap between the spacing preiection 522 of the both sides of the limiting plate 521, and the fixing hole 53 is by between described
Gap cooperatively forms with the U-bolt 51, for the second prestressing force drawstring 32 to be fixed.U-bolt 51 is consolidated by nut
Due to the lower section of the bottom wing listrium of second cross beam 22.
The novel photovoltaic flexible support that the present embodiment provides also includes being respectively perpendicular being connected to the first prestressing force drawstring
31 and the first steadying line 61 and the second steadying line 62 of the second prestressing force drawstring 32；The first steel component 1 and described the
More first steadying lines 61 are provided between two steel components 2 and between the adjacent second steel component 2, described first is steady
Standing wire 61 is sequentially connected to each first prestressing force drawstring 31, preferably, the quantity of the first steadying line 61 is two；Institute
State between the first steel component 1 and the second steel component 2 and be provided with more described between the adjacent second steel component 2
Two steadying lines 62, second steadying line 62 is sequentially connected to each second prestressing force drawstring 32, preferably, second is steady
The quantity of standing wire 62 is two.It is pointed out that each first steadying line 61 with second steadying line 62
In on same vertical plane.By setting the first steadying line 61 and on the first prestressing force drawstring 31 and the second prestressing force drawstring 32
Two steadying lines 62 add the globality across interior first prestressing force drawstring 31 and the second prestressing force drawstring 32, reduce the poles such as strong wind
Hold the influence to photovoltaic flexible support and crystal silicon photovoltaic plate under weather.It is pointed out that the first steel component 1 and described the
The space between space or the adjacent second steel component 2 between two steel components 2 be referred to as across.
First steadying line 61 and second steadying line 62 are connected by the first buckle 71 and the second buckle 72 respectively
In the first prestressing force drawstring 31 and the second prestressing force drawstring 32；The buckle 72 of first buckle 71 and second includes
Fixed plate 8 and two U-shaped folders 9, the both ends of two U-shaped folders 9 are fixed in fixed plate 8 by bolt hole respectively.
The first prestressing force drawstring 31 sequentially passes through two U-shaped folders 9 of first buckle 71, and described first is steady
Space of the standing wire 61 through two U-shaped folders 9 of first buckle 71 is simultaneously arranged at the first prestressing force drawstring
31 top；The second prestressing force drawstring 32 sequentially passes through two U-shaped folders 9 of second buckle 72, and described second
Space of the steadying line 62 through two U-shaped folders 9 of second buckle 72 is simultaneously arranged at second prestressing force and drawn
The top of rope 32.
Pay attention to, general principle and principal character of the present utility model and of the present utility model excellent has been shown and described above
Point.It should be understood by those skilled in the art that the utility model is not limited to the embodiments described above, above-mentioned embodiment and say
Simply illustrate principle of the present utility model described in bright book, on the premise of the spirit and scope of the utility model is not departed from, this
Utility model also has various changes and modifications, and these changes and improvements are both fallen within claimed the scope of the utility model,
Claimed scope of the present utility model is by appended claims and its equivalent thereof.
Claims (10)
1. a kind of novel photovoltaic flexible support, it is characterised in that including two the first steel components (1), be placed in two described first
Multiple second steel components (2) and the more prestressing force drawstrings (3) be arrangeding in parallel between steel component (1)；
Two the first steel components (1) are parallel to each other, and the first steel component (1) is parallel to multiple second steel components
(2)；
The every prestressing force drawstring (3) is sequentially connected to multiple second steel components (2), and the every prestressing force drawstring
(3) both ends are individually fixed on two the first steel components (1)；
The spaced prestressing force drawstring (3) is located in same level；Prestressing force drawstring (3) position being disposed adjacent
In on different horizontal planes.
2. novel photovoltaic flexible support according to claim 1, it is characterised in that the prestressing force drawstring (3) includes the
One prestressing force drawstring (31) and the second prestressing force drawstring (32), the first prestressing force drawstring (31) are in same level；
The second prestressing force drawstring (32) is in same level；
The first prestressing force drawstring (31) is arranged at intervals with the second prestressing force drawstring (32) and first prestressing force is drawn
(31) of rope are located at the top of the second prestressing force drawstring (32).
3. novel photovoltaic flexible support according to claim 2, it is characterised in that the first steel component (1) includes more
The individual oblique steel column (11) be arrangeding in parallel and the first crossbeam (12) for being sequentially connected to multiple tiltedly steel columns (11)；
Set on the first crossbeam (12) upper pillar stand (121) above and below the first crossbeam (12) respectively and under
Column (122)；
The upper pillar stand (121) of two first crossbeams (12) is fixed at the both ends of the first prestressing force drawstring (31)；
The lower pillar stand (122) of two first crossbeams (12) is fixed at the both ends of the second prestressing force drawstring (32).
4. novel photovoltaic flexible support according to claim 3, it is characterised in that the first prestressing force drawstring (31)
Side of the upper pillar stand (121) away from the second steel component (2) is fixed in both ends by pad anchorage (4)；
The lower pillar stand (122) is fixed on away from described in the both ends of the second prestressing force drawstring (32) by pad anchorage (4)
The side of second steel component (2).
5. novel photovoltaic flexible support according to claim 3, it is characterised in that the second steel component (2) includes multiple flat
The montant (21) of row setting and the second cross beam (22) for being vertically connected at the montant (21) successively；
The second cross beam (22) is H profile steel；
The first prestressing force drawstring (31) passes through the second cross beam (22), and the second prestressing force drawstring (32) is by U-shaped
Anchor ear (5) is connected to the lower section of the second cross beam (22).
6. novel photovoltaic flexible support according to claim 5, it is characterised in that the U-shaped anchor ear (5) includes U-shaped spiral shell
Bolt (51) and line card (52), fixing hole (53) is formed between the U-bolt (51) and the line card (52), described second in advance should
Power drawstring (32) passes through the fixing hole (53).
7. novel photovoltaic flexible support according to claim 2, it is characterised in that also include being respectively perpendicular be connected to it is described
First prestressing force drawstring (31) and the first steadying line (61) and the second steadying line (62) of the second prestressing force drawstring (32)；
It is respectively provided between the first steel component (1) and the second steel component (2) and between the adjacent second steel component (2)
There are more first steadying lines (61), first steadying line (61) is sequentially connected to each first prestressing force drawstring
(31)；
It is respectively provided between the first steel component (1) and the second steel component (2) and between the adjacent second steel component (2)
There are more second steadying lines (62), second steadying line (62) is sequentially connected to each second prestressing force drawstring
(32)。
8. novel photovoltaic flexible support according to claim 7, it is characterised in that each first steadying line (61) is equal
It is located at second steadying line (62) on same vertical plane.
9. novel photovoltaic flexible support according to claim 7, it is characterised in that first steadying line (61) and described
Second steadying line (62) is connected to the first prestressing force drawstring (31) by the first buckle (71) and the second buckle (72) respectively
With the second prestressing force drawstring (32)；
First buckle (71) and the second buckle (72) include fixed plate (8) and two U-shaped folders (9), two U-shaped folders
(9) both ends are individually fixed in fixed plate (8).
10. novel photovoltaic flexible support according to claim 9, it is characterised in that the first prestressing force drawstring (31)
Two U-shaped folders (9) of first buckle (71) are sequentially passed through, first steadying line (61) passes through first buckle
(71) the space between two U-shaped folders (9) is simultaneously arranged at the top of the first prestressing force drawstring (31)；
The second prestressing force drawstring (32) sequentially passes through two U-shaped folders (9) of second buckle (72), and described second
Space of the steadying line (62) through two U-shaped folders (9) of second buckle (72) and to be arranged at described second pre-
The top of stress drawstring (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720900779.1U CN206948241U (en) | 2017-07-24 | 2017-07-24 | A kind of novel photovoltaic flexible support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720900779.1U CN206948241U (en) | 2017-07-24 | 2017-07-24 | A kind of novel photovoltaic flexible support |
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| Publication Number | Publication Date |
|---|---|
| CN206948241U true CN206948241U (en) | 2018-01-30 |
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ID=61370738
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379022A (en) * | 2018-12-05 | 2019-02-22 | 中国电建集团江西省电力建设有限公司 | The construction and load bearing beam of flexible photovoltaic bracket |
-
2017
- 2017-07-24 CN CN201720900779.1U patent/CN206948241U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379022A (en) * | 2018-12-05 | 2019-02-22 | 中国电建集团江西省电力建设有限公司 | The construction and load bearing beam of flexible photovoltaic bracket |
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