CN218090816U - Photovoltaic support screw pile with vertical fins - Google Patents
Photovoltaic support screw pile with vertical fins Download PDFInfo
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- CN218090816U CN218090816U CN202222213661.5U CN202222213661U CN218090816U CN 218090816 U CN218090816 U CN 218090816U CN 202222213661 U CN202222213661 U CN 202222213661U CN 218090816 U CN218090816 U CN 218090816U
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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
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Abstract
The utility model provides a photovoltaic support screw pile with vertical fin, including steel casing pipe, spiral steel pile steel pipe, spiral steel pile blade, vertical spacing shelves ring sum a plurality of vertical fin, spiral steel pile steel pipe on be equipped with a plurality of spiral steel pile blades along length direction, be equipped with the steel casing pipe between two adjacent spiral steel pile blades, a plurality of vertical fin establish on the steel casing pipe outer wall, the upper and lower both ends of steel casing pipe all be equipped with vertical spacing shelves ring, steel casing pipe and vertical spacing shelves ring all overlap and establish outside the spiral steel pile steel pipe. The utility model discloses respectively set up a set of spacing shelves on the spiral steel pile steel pipe that has vertical fin's steel casing pipe top and below in the welding, impress when both having done benefit to the stake, pull out when also doing benefit to the pile pulling, whole construction simple accurate. The utility model discloses an add and increase a plurality of vertical fin in spiral piling bar steel pipe lower part, improved the horizontal bearing capacity of spiral piling bar, reached the long purpose of reduction stake.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, concretely relates to photovoltaic support screw pile with vertical fin.
Background
The area of the desert is wide in China, solar energy resources are rich, and the power generation efficiency of the centralized ground photovoltaic power station is high. In a wind-blown sand field in a desert area, the shading function of the solar photovoltaic panel and the water for cleaning the solar photovoltaic panel can improve the moisture required by the growth of plants and create conditions for the growth of shade-tolerant plants. The photovoltaic panel covered in a large area can absorb solar radiation and convert the solar radiation into electric energy, so that a large amount of direct solar radiation on the ground surface is reduced, and the power source for converting and consuming sand storms in desert areas is facilitated. The photovoltaic array has the function that the mechanical sand barrier blocks wind and sand, and can inhibit and reduce the frequency and the intensity of sand storms. The centralized ground photovoltaic power station constructed in the desert area has the functions of cooling and humidifying local microclimates, and is beneficial to improving the ecological environment of the desert. Utilize idle big piece desert to build centralized ground photovoltaic power plant, have good economic benefits and ecological benefits.
A centralized ground photovoltaic power station is built in a desert, and a special foundation of aeolian sand is inevitably encountered in the engineering construction of the centralized ground photovoltaic power station in the desert area. Under the environment, compared with the traditional reinforced concrete pile foundation form, the spiral steel pile has the advantages of high construction speed, investment saving, small environmental influence, detachability and recoverability.
In terms of foundation conditions, the loose microstructure of the aeolian sand causes low foundation bearing capacity and poor constraint capacity on piles. As for the stress characteristics of the photovoltaic support pile foundation, the horizontal force and the upward pulling force transmitted by the upper structure are large, and the vertical downward force is small.
The existing spiral steel pile is not beneficial to fully exerting the material performance of the steel of the pile body. The bearing capacity and the deformation resistance of the pile under the action of the soil are determined by the strength of the surrounding soil body and the shape characteristics of the pile. On the one hand, the wind-blown sand loose structure has smaller self stress and lower use efficiency of pile body materials compared with the steel strength of the pile. On the other hand, in view of the shape characteristics of the pile, the projection of the spiral fins of the spiral steel pile in the vertical direction of the pile is large, and is the projection of the cross section area of the pile and the plane of the spiral fins. In contrast, the lateral, i.e. horizontal, projection of the pile is small, consisting of the side of the middle steel tube of the pile and the thickness of the helical fins. The projected area determines the force-bearing area. The vertical projection is large, and the vertical force resistance, the compression resistance and the pulling resistance of the spiral steel pile are strong; the lateral projection is small, and the horizontal force resistance is poor. In engineering, the horizontal force resistance of the pile is improved by generally adopting a mode of increasing the length or the diameter of the pile, and the use efficiency of the pile body material is lower.
SUMMERY OF THE UTILITY MODEL
In order to overcome the long overlength of current stake and the poor problem of horizontal force resistance, the utility model provides a photovoltaic support screw pile with vertical fin, the utility model discloses an add vertical fin and the vertical spacing shelves ring that increase in screw steel pile steel pipe lower part, improved the horizontal bearing capacity of screw steel pile, reduced the pile bolck displacement under the horizontal load effect. The purpose of reducing the pile length can be achieved, the manufacturing cost is reduced, and the economical efficiency is improved.
The utility model discloses a technical scheme do:
the utility model provides a photovoltaic support screw pile with vertical fin, includes steel casing pipe, spiral steel pile steel pipe, spiral steel pile blade, vertical spacing shelves ring sum a plurality of vertical fin, spiral steel pile steel pipe on be equipped with a plurality of spiral steel pile blades along length direction, be equipped with the steel casing pipe between two adjacent spiral steel pile blades, a plurality of vertical fin establish on the steel casing pipe outer wall, the upper and lower both ends of steel casing pipe all be equipped with vertical spacing shelves ring sum, steel casing pipe and vertical spacing shelves ring sum cover establish outside the spiral steel pile steel pipe.
The vertical limiting retainer ring is welded on the outer wall of the spiral steel pile steel pipe through a short steel bar.
The short reinforcing steel bars are circular or three sections of reverse spiral shapes around the spiral steel pile steel pipe.
When the short steel bars are three sections of reverse spiral shapes, the spiral direction of the short steel bars is opposite to the rotating direction of the blades of the spiral steel pile; the three sections of reverse spiral short steel bars are in three-point contact with the edge of the corresponding steel sleeve pipe opening.
The spiral directions of the spiral steel pile blades are consistent.
The vertical fins are uniformly distributed on the circumferential side wall of the steel sleeve.
The vertical fins are rectangular or trapezoid, and the upper ends of the trapezoid vertical fins are longer than the lower ends of the trapezoid vertical fins.
The length of the vertical wing is the same as that of the steel sleeve; the length of the vertical fin extending outwards from the radial direction of the steel sleeve ranges from 50mm to 150mm.
The length of the steel sleeve is 100 to 300mm.
The beneficial effects of the utility model are that:
(1) The utility model discloses an add and increase a plurality of vertical fin in spiral steel pile steel pipe lower part, improved the horizontal bearing capacity of spiral steel pile, reduced the pile bolck displacement under the horizontal loading effect. The purpose of reducing the pile length can be achieved. The pile length is reduced, the material is saved, the manufacturing cost is reduced, and the economical efficiency is improved.
(2) The utility model discloses overall structure makes simply, construction convenience, and the pile length shortens the back for the process of becoming the stake has improved engineering efficiency, has accelerated the engineering progress.
(3) The utility model discloses respectively set up a set of spacing shelves on the spiral steel pile steel pipe that has vertical fin's steel casing pipe top and below in the welding, impress when both having done benefit to the stake, pull out when also doing benefit to the pile pulling, whole construction simple accurate.
The above description is only an overview of the technical solution of the present invention, and in order to clearly understand the technical means of the present invention and to implement the technical solution according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the schematic diagram of the three-section vertical spacing ring structure of the present invention.
Fig. 3 is a schematic top view of two vertical fins of the present invention.
Fig. 4 is a schematic top view of three vertical fins of the present invention.
Fig. 5 is a schematic top view of four vertical fins of the present invention.
In the figures, the reference numbers are: 1-vertical fins; 2-steel casing pipe; 3-spiral steel pile steel pipe; 4-spiral steel pile blades; 5-a vertical spacing ring; 6. pile periphery foundation surface.
Detailed Description
Example 1:
in order to overcome the problem that current pile length overlength and horizontal force resistance are poor, the utility model provides a photovoltaic support screw pile and application method that the lower part has vertical fin as shown in fig. 1-5, the utility model discloses an add vertical fin and the vertical spacing shelves ring that increase in screw steel pile steel pipe lower part, improved the horizontal bearing capacity of screw steel pile, reduced the pile bolck displacement under the horizontal loading effect. The purpose of reducing the pile length can be achieved, the manufacturing cost is reduced, and the economical efficiency is improved.
The utility model provides a photovoltaic support screw pile with vertical fin, includes steel casing pipe 2, spiral steel pile steel pipe 3, spiral steel pile blade 4, vertical spacing shelves ring 5 and a plurality of vertical fin 1, spiral steel pile steel pipe 3 on be equipped with a plurality of spiral steel pile blades 4 along length direction, be equipped with steel casing pipe 2 between two adjacent spiral steel pile blades 4, a plurality of vertical fin 1 establish on steel casing pipe 2 outer wall, steel casing pipe 2 upper and lower both ends all be equipped with vertical spacing shelves ring 5, steel casing pipe 2 and vertical spacing shelves ring 5 all overlap and establish outside spiral steel pile steel pipe 3.
The utility model discloses in, steel casing pipe 2 only need be located between two adjacent spiral piling bar blades 4 can. The number and the position of the steel sleeves 2 are sleeved on the spiral steel pile steel pipe 3 according to requirements. A plurality of vertical fins 1 are uniformly distributed on the outer wall of the steel sleeve 2 along the circumferential direction, so that the strength of the corresponding position on the corresponding spiral steel pile steel pipe 3 is ensured.
As shown in fig. 1, the steel casing 2 is a single one, and is disposed between two spiral steel pile blades 4 at the lowermost end. The utility model discloses in, steel casing 2's length and vertical fin 1's size can suitably be adjusted according to the atress requirement of stake. The utility model discloses respectively weld a set of vertical spacing shelves ring 5 on spiral piling bar steel pipe 3 of vertical fin 1 top and below, play restriction steel casing pipe 2 along spiral piling bar steel pipe 3 gliding effect from top to bottom.
As shown in fig. 1, the utility model discloses increased vertical fin 1 in spiral steel pile steel pipe 3 lower parts, through the mode of increase spiral pile lower part level to projected area, change the shape characteristic of spiral pile in the horizontal direction, be favorable to the stake to receive the horizontal force by the stake lower part with horizontal load directly by vertical fin 1 to the soil body transmission around the stake, increase the anti horizontal force ability of stake, improve the material availability factor. The utility model is suitable for a basis of desert area aeolian sand place photovoltaic support basis, middle-size and small-size equipment foundation, container module building and overhead line iron tower. Can also be applied to places such as collapsible loess, silt and the like.
The utility model provides a screw pile is when pulling out the stake through the equipment screw in ground soil body of pile and anti-rotation, and the vertical fin 1 of 3 lower parts of spiral piling bar steel pipe is under the effect of vertical spacing shelves ring 5, along with the screw pile together squeeze into the ground or extract. Adopt in the area of wind-blown sand the utility model discloses can play the effect that improves horizontal bearing capacity, reduces horizontal displacement to spiral steel pile, promote photovoltaic support antidumping ability, reduce the stake length. The utility model discloses save the investment, construction convenience is swift, and environmental impact is little, and the environmental protection is recoverable. The foundation is suitable for photovoltaic support foundations of windy and sandy sites in desert areas, small and medium-sized equipment foundations, container module buildings and foundations of overhead line iron towers, and can also be applied to geological conditions such as collapsible loess, silt and the like. For the occasion of reinforcing the existing support pile foundation, the steel sleeve 2 of the vertical fin 1 can be divided into two halves. And closing the steel sleeve 2 on the spiral steel pile steel pipe 3 by using a hoop or a bolt.
The utility model discloses a safe principle of being suitable for, economical and reasonable, environmental protection, resources are saved has wide application prospect in desert area windage sand field ground silty fine sand ground.
Example 2:
based on the basis of embodiment 1, in this embodiment, preferably, the vertical limiting retainer ring 5 is welded to the outer wall of the spiral steel pile steel pipe 3 through a short steel bar.
Preferably, the short steel bars are circular or three sections of reverse spiral shapes around the spiral steel pile steel pipe 3.
Preferably, when the short steel bars are three sections of reverse spiral shapes, the spiral direction of the short steel bars is opposite to the rotating direction of the spiral steel pile blades 4; the three sections of reverse spiral short steel bars are in three-point contact with the corresponding edge of the pipe orifice of the steel sleeve 2.
The utility model provides a spacing shelves ring 5 is pasted by the stub bar and is welded in the 3 outsides of spiral piling bar steel pipe. The short steel bars can be in a ring shape around the spiral steel pile steel pipe 3, or in a three-section reverse spiral shape around the spiral steel pile steel pipe 3 as shown in fig. 2, and the spiral direction is opposite to the rotation direction of the spiral steel pile blades 4. The utility model provides a during ground and the anti-rotation pile pulling are impressed in the rotation of screw pile, the area of contact at the mouth of pipe edge that steel casing pipe 2 that three-section anti-spiral shape spacing shelves structure and vertical fin 1 are connected corresponds is little, for three point contact, and is less with 2 gliding resistances of steel casing pipe. The three sections of reverse spiral are three arc sections which are not contacted with each other.
The utility model discloses in, when 3 downward screw in foundations of spiral piling bar steel pipe and anti-rotation pile pulling, spacing shelves ring 5 can prevent vertical fin 1 along 3 longitudinal sliding of spiral piling bar steel pipe to make vertical fin 1 together impressed or extract the foundation with spiral piling bar steel pipe 3. In the process of rotating and screwing the spiral steel pile blades 4, the foundation soil around the pile above the blade range is loosened by rotary cutting, and the vertical fins 1 are favorably pressed into the foundation. Similarly, when the pile is pulled out, the spiral steel pile blades 4 on the upper part rotate out, the foundation soil around the pile above the blade range is rotationally cut and loosened, and the vertical fins 1 are favorably pulled out of the foundation.
Preferably, the plurality of spiral steel pile blades 4 have the same spiral direction.
The utility model discloses in, the inclination of a plurality of spiral piling bar blades 4 is unanimous, and the quantity and the size position of spiral piling bar blade 4 match with spiral piling bar steel pipe 3 according to the demand, and this belongs to current maturation technique, the utility model discloses in no longer carry out further explanation.
Preferably, the plurality of vertical fins 1 are uniformly distributed on the circumferential side wall of the steel casing 2.
Preferably, the vertical fin 1 is rectangular or right trapezoid, and the upper end of the right trapezoid vertical fin 1 is longer than the lower end.
Preferably, the length of the vertical fin 1 is the same as that of the steel casing 2; the length of the vertical fin 1 extending outwards from the steel sleeve 2 in the radial direction is 50-150mm.
Preferably, the length of the steel sleeve 2 ranges from 100 to 300mm.
In the utility model, the length of the steel sleeve 2 is preferably 100 mm, 120 mm, 150mm, 180 mm, 200 mm, 220 mm, 240 mm, 260 mm, 280 mm and 300mm according to the requirement; the inner diameter of the steel sleeve 2 is matched with the outer diameter of the spiral steel pile steel pipe 3, and the inner diameter is slightly larger than the outer diameter of the spiral steel pile steel pipe 3, so that the steel sleeve 2 can freely rotate along the spiral steel pile steel pipe 3.
The utility model discloses in, vertical fin 1 welds on steel casing pipe 2, becomes an organic whole with steel casing pipe 2. The utility model discloses in, 3 lower extremes of spiral steel pile steel pipe are most advanced.
The utility model discloses in, on steel casing 2, will be preferred according to the demand 2 to 4 vertical fin 1, the edge of every vertical fin 1 welds with the length direction of steel casing 2 surface mutually. The vertical fin 1 is preferably a rectangular or inverted trapezoidal steel plate with a large top and a small bottom, and the thickness is preferably 6mm or 8mm. The shape of the fins with large upper parts and small lower parts facilitates reducing the resistance when cutting into the foundation. One edge of the vertical fin 1 is welded on a bus on the outer surface of the steel sleeve 2. When the inverted trapezoidal steel plate is selected, the steel sleeve 2 is welded along the waist edge of the trapezoidal right angle. The position of each welded vertical fin 1 is equally divided into the circumference of the steel sleeve 2.
In the present invention, the number of the vertical fins 1 may be preferably 2 pieces as shown in fig. 3, three pieces as shown in fig. 4, or 4 pieces as shown in fig. 5 according to the main force receiving direction of the horizontal force borne by the screw pile. The vertical fins 1 are of a length comparable to the length of the steel casing 2 in the vertical direction, and may be slightly shorter than the length of the steel casing 2. The length of the vertical fin 1 from the diameter of the steel sleeve 2 to the outside is 50-150mm. The length of the steel sleeve and the size of the vertical wing piece 1 can be properly adjusted according to the stress requirement, and the horizontal bearing capacity of the steel sleeve is ensured.
Example 3:
based on embodiment 1 or 2, the utility model provides a method for using photovoltaic support screw pile with vertical fin, concrete step is: the method comprises the following steps: manufacturing a spiral pile, sleeving a steel sleeve 2 welded with vertical fins 1 at the lower design position of a spiral steel pile steel pipe 3 provided with a plurality of spiral steel pile blades 4, and then welding vertical limiting stop rings 5 at the upper end and the lower end of the steel sleeve 2 to manufacture the spiral pile;
step two: determining the center position of a spiral steel pile steel pipe 3 on the ground;
step three: piling to form a pile, namely inserting the pile tip at the lower end of the spiral steel pile steel pipe 3 of the spiral pile manufactured in the step one into the surface 6 of the foundation around the pile at the central position positioned in the step two, screwing the spiral pile manufactured in the step one into the foundation, and finishing the pile forming after the pile top of the spiral pile reaches the designed elevation;
step four: and (4) carrying out watering, tamping and leveling treatment on the surface 6 of the foundation around the pile so that the surface 6 of the foundation around the pile is higher than the surrounding ground.
The utility model discloses in, step four in, the concrete mode that handles is carried out pile week ground surface 5 for the 3 upper portions of spiral steel pile steel pipe pile week watering tamp flattening, then the watering mud concreties, perhaps covers with little stone or rock mass to avoid the sand and soil loss of stake week earth's surface production under wind, rain effect.
The utility model discloses in, the measurement location of spiral steel pile steel pipe 3 is marked on ground according to the design drawing. The design in advance ensures that the error of the subsequent pile forming is not too large, and the spiral use strength and precision are ensured.
The utility model discloses in, the concrete process of pile-forming is: and inserting the pile tip at the lower end of the spiral steel pile steel pipe 3 into the foundation surface 5 at the positioning position. And then screwing the screw pile into the foundation by adopting a special piling drilling machine of the existing finished product. And finishing the pile forming after the pile top reaches the designed elevation.
The utility model discloses in, the concrete process of 5 processings on ground surface around the stake is: the utility model provides a spiral pile's stake week watering tamp flattening makes stake week ground surface 5 a little more than ground on every side. The protection is carried out in a proper range around the pile, and cement paste can be sprayed for consolidation or small stone blocks are used for covering so as to avoid sand and soil loss generated on the ground surface around the pile under the action of wind and rain. Little stone and grout are prior art, can directly purchase the practicality in market, the utility model discloses in will not explain one by one.
After adopting the structure that the lower part is provided with the vertical fin 1, the pile length is shortened to 3.5m from 4.5m on the basis of the photovoltaic support spiral steel pile foundation under the geological condition of aeolian sand in Gansu province, and the horizontal bearing capacity of the pile is improved by 27%.
The utility model provides a shape characteristic of screw pile is favorable to enlarging the effect between stake and the soil. The utility model discloses increase vertical fin 1 in screw pile lower part, through increase stake lower part level to projected area's mode, change the shape characteristic of stake in the horizontal direction, by stake lower part when being favorable to the stake to receive the horizontal force with horizontal load directly by vertical fin 1 to the soil body transmission around the stake, increase the anti horizontal force ability of stake, increased the utility model provides a screw pile's life has improved the material availability factor.
The utility model is suitable for a basis of desert area aeolian sand place photovoltaic support basis, middle-size and small-size equipment foundation, container module building and overhead line iron tower. Can also be applied to places such as collapsible loess, silt and the like.
The above examples are merely illustrations of the present invention, and do not constitute limitations to the scope of the present invention, and all designs identical or similar to the present invention belong to the scope of the present invention. The device structure and the method steps not described in detail in the present invention are prior art, and no further explanation will be given in the present invention.
Claims (9)
1. The utility model provides a photovoltaic support screw pile with vertical fin which characterized in that: including steel casing pipe (2), spiral steel pile steel pipe (3), spiral steel pile blade (4), vertical spacing shelves ring (5) and a plurality of vertical fin (1), spiral steel pile steel pipe (3) go up and be equipped with a plurality of spiral steel pile blade (4) along length direction, be equipped with steel casing pipe (2) between two adjacent spiral steel pile blade (4), a plurality of vertical fin (1) establish on steel casing pipe (2) outer wall, the upper and lower both ends of steel casing pipe (2) all be equipped with vertical spacing shelves ring (5), steel casing pipe (2) and vertical spacing shelves ring (5) all overlap and establish outside spiral steel pile steel pipe (3).
2. The photovoltaic scaffold screw pile with vertical fins of claim 1, wherein: and the vertical limiting retainer ring (5) is welded on the outer wall of the spiral steel pile steel pipe (3) through a short steel bar.
3. The photovoltaic scaffold screw pile with vertical fins according to claim 2, characterized in that: the short steel bars are circular or three-section inverse spiral shapes around the spiral steel pile steel pipe (3).
4. The photovoltaic scaffold screw pile with vertical fins of claim 3, wherein: when the short steel bars are three sections of reverse spiral shapes, the spiral direction of the short steel bars is opposite to the rotating direction of the spiral steel pile blades (4); the three sections of reverse spiral short steel bars are in three-point contact with the edge of the pipe orifice of the corresponding steel sleeve (2).
5. The photovoltaic scaffold screw pile with vertical fins according to claim 1, characterized in that: the spiral directions of the spiral steel pile blades (4) are consistent.
6. The photovoltaic scaffold screw pile with vertical fins according to claim 1, characterized in that: the vertical fins (1) are uniformly distributed on the circumferential side wall of the steel sleeve (2).
7. The photovoltaic scaffold screw pile with vertical fins of claim 1, wherein: the vertical fin (1) is rectangular or right trapezoid, and the upper end of the right trapezoid vertical fin (1) is longer than the lower end.
8. The photovoltaic scaffold screw pile with vertical fins according to claim 1, characterized in that: the length of the vertical wing piece (1) is the same as that of the steel sleeve (2); the length of the vertical fin (1) extending outwards from the steel sleeve (2) in the radial direction is 50-150mm.
9. The photovoltaic scaffold screw pile with vertical fins of claim 1, wherein: the length of the steel sleeve (2) is 100 to 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222213661.5U CN218090816U (en) | 2022-08-23 | 2022-08-23 | Photovoltaic support screw pile with vertical fins |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222213661.5U CN218090816U (en) | 2022-08-23 | 2022-08-23 | Photovoltaic support screw pile with vertical fins |
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| CN218090816U true CN218090816U (en) | 2022-12-20 |
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| CN202222213661.5U Active CN218090816U (en) | 2022-08-23 | 2022-08-23 | Photovoltaic support screw pile with vertical fins |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467324A (en) * | 2022-08-23 | 2022-12-13 | 中国电建集团西北勘测设计研究院有限公司 | Photovoltaic support screw pile with vertical fins and using method |
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- 2022-08-23 CN CN202222213661.5U patent/CN218090816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467324A (en) * | 2022-08-23 | 2022-12-13 | 中国电建集团西北勘测设计研究院有限公司 | Photovoltaic support screw pile with vertical fins and using method |
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