CN217891327U - Prefabricated piping lane construction pedestal - Google Patents
Prefabricated piping lane construction pedestal Download PDFInfo
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- CN217891327U CN217891327U CN202221611613.5U CN202221611613U CN217891327U CN 217891327 U CN217891327 U CN 217891327U CN 202221611613 U CN202221611613 U CN 202221611613U CN 217891327 U CN217891327 U CN 217891327U
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Abstract
The utility model belongs to the technical field of the construction of assembled piping lane, concretely relates to prefabricated piping lane construction pedestal. The utility model comprises a plaster layer, a concrete pedestal, a heat insulation layer, a steam curing coil pipe and a reinforcing mesh sheet; the lime soil layer is laid below the concrete pedestal; the heat-insulating layer, the steam-curing coil pipe and the reinforcing mesh are horizontally arranged in the concrete pedestal from bottom to top; the steam-curing coil is arranged on the heat-insulating layer, and a space is reserved between the steam-curing coil and the reinforcing mesh. The utility model discloses effectively solved when ambient temperature is lower, the health preserving that the prefabricated process of piping lane exists does not target in place, the problem that fashioned piping lane quality is difficult to guarantee.
Description
Technical Field
The utility model belongs to the technical field of the construction of assembled piping lane, concretely relates to prefabricated piping lane construction pedestal.
Background
Along with the continuous improvement of building construction trade level of mechanization, put forward higher requirement to the time limit for a project progress of engineering project, because the project time limit for a project is tight, prefabricated component is more, and construction progress directly restricts the project progress, need be under construction winter, and the piping lane is as the novel prefabricated component in the municipal works, and its prefabrication quality, bearing capacity etc. are crucial. In the prefabricated in-process of piping lane, the health preserving influences the quality of prefabricated shaping piping lane very greatly, especially in cold areas.
At present, the prefabricated pipe gallery health-care technology in cold regions at home and abroad is less in research, most prefabricated pipe gallery health-care technologies only have reference significance, cannot directly generate technical guidance for actual construction, and less data can be used for reference. Firstly, under the condition of long-term low temperature, the concrete strength develops slowly, the design requirement is difficult to reach, and remedial measures are difficult to take in the later period; secondly, under dry big difference in temperature environment, the concrete produces temperature shrinkage crack very easily, influences appearance quality and durability, influences the normal use and the life-span of piping lane.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prefabricated piping lane construction pedestal, its aim at provide one kind can make the prefabricated in-process health preserving of cold area piping lane target in place, effectively improve the device of shaping piping lane quality.
In order to realize the purpose, the utility model discloses a technical scheme be:
a prefabricated pipe gallery construction pedestal comprises a mortar layer, a concrete pedestal, a heat insulation layer, a steam-cured coil pipe and a reinforcing mesh; the lime-soil layer is laid below the concrete pedestal; the heat-insulating layer, the steam-curing coil pipe and the reinforcing mesh are horizontally arranged in the concrete pedestal from bottom to top; the steam-cured coil pipe is arranged on the heat-insulating layer, and a space is reserved between the steam-cured coil pipe and the reinforcing mesh.
The concrete pedestal comprises a concrete pedestal upper layer, a concrete pedestal middle layer and a concrete pedestal lower layer; the heat-insulating layer and the steam-curing coil pipe are arranged between the middle layer of the concrete platform and the lower layer of the concrete platform; the reinforcing mesh is arranged between the upper layer of the concrete pedestal and the middle layer of the concrete pedestal.
The concrete pedestal is a cuboid which is made of C20 concrete and has the height of 28-32 cm; the concrete platform is internally provided with a heat insulation layer and a heat insulation belt is arranged on the side surface of the steam-curing coil pipe.
And a prefabricated groove for placing the steam-curing coil pipe is arranged on the upper surface of the lower layer of the concrete pedestal.
The thickness of the lime soil layer is 55-65cm; the compaction degree of the lime soil layer is not less than 95%.
The heat-insulating layer comprises a plurality of polystyrene boards, aluminum foil paper and a bidirectional steel wire mesh; the polystyrene boards are arranged up and down, and aluminum foil paper is paved between the adjacent polystyrene boards and connected and fixed; the upper surface of the polystyrene board on the uppermost layer is arranged in the bidirectional steel wire mesh, and aluminum foil paper is tiled among the polystyrene boards on the uppermost layer of the bidirectional steel wire mesh.
The thickness of the heat-insulating layer is 2.5-3.5 cm; the lapping width of the aluminum foil paper is more than 20mm.
The steam-curing coil pipe is a cross-linked polypropylene pipe with the pipe diameter of 2 cm; the length of the steam-curing coil pipe is 60-110m.
The steam-curing coil is a rectangular rotary coil made of a whole pipe; two ports of the rectangular steam-curing coil pipe are respectively a water return port and a water supply port, and the water return port and the water supply port are arranged outside the concrete pedestal.
The distance between the rectangular rotary type steam-curing coil pipes is gradually reduced from inside to outside.
Has the beneficial effects that:
(1) The utility model discloses constitute by grey soil layer, concrete pedestal, heat preservation heat insulation layer, evaporate foster coil pipe and reinforcing bar net piece organic. The utility model discloses effectively solved when ambient temperature is lower, the health preserving that the prefabricated process of piping lane exists is not in place, the problem that fashioned piping lane quality is difficult to guarantee.
(2) The utility model discloses reduce maintenance management, reduced the engineering and guaranteed can normal long-term operation.
(3) The utility model provides a steam-curing coil pipe is made by a whole pipe, makes it not have the interface, difficult seepage, safe and reliable.
(4) The utility model provides a steam-curing coil pipe adopts the rotary-type coil pipe of rectangle, can make the surface temperature of pedestal even on the one hand, and on the other hand coil pipe has only crooked 90 degrees, and the material receives bending stress less.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention more clear and clear, and to implement the technical solution according to the content of the description, the following detailed description is made of the preferred embodiments of the present invention.
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 view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the present invention with a prefabricated groove;
FIG. 3 is a schematic view of the arrangement of the steam-curing coil pipe of the present invention;
fig. 4 is a schematic top view of the present invention.
In the figure: 1-a lime soil layer; 2-concrete pedestal; 3-heat preservation and insulation layer; 4-steam-curing coil pipes; 5-coil pipe staple; 6-reinforcing steel bar mesh; 7-prefabricating a groove; 8-prefabricating a pipe gallery.
The above description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical means of the present invention, and to implement the technical means according to the content of the description, the following detailed description is given through preferred embodiments of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-4, the prefabricated pipe gallery construction pedestal comprises a mortar layer 1, a concrete pedestal 2, a heat insulation layer 3, a steam-cured coil pipe 4 and a reinforcing mesh 6; the lime soil layer 1 is laid below the concrete pedestal 2; the heat-insulating layer 3, the steam-curing coil pipe 4 and the reinforcing mesh 6 are horizontally arranged in the concrete pedestal 2 from bottom to top; the steam-cured coil pipe 4 is arranged on the heat-insulating layer 3, and a space is reserved between the steam-cured coil pipe 4 and the reinforcing mesh 6.
The utility model discloses a theory of operation: and prefabricating the pipe gallery on the surface of the construction pedestal. In the prefabrication process, through toward evaporating foster coil pipe 4 inner loop injection low temperature hot water with pedestal surface temperature heating to the uniform temperature, through evaporating foster coil pipe 4 outwards radiation heat uniformly, ensured to carry out prefabricated pipe gallery 8's health preserving quality.
The utility model discloses technical scheme's adoption, not only civilized environmental protection does benefit to green construction, energy saving and emission reduction, and simultaneously, the cost of manufacture is lower, and the construction is convenient, has avoided reprocessing, can effectively reduce and maintain the administrative cost, and has guaranteed the utility model discloses can normally long-term operation.
Example two:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 1 and 2, on the basis of the first embodiment, the concrete pedestal 2 comprises a concrete pedestal upper layer, a concrete pedestal middle layer and a concrete pedestal lower layer; the heat-insulating layer 3 and the steam-curing coil pipe 4 are arranged between the middle layer of the concrete pedestal and the lower layer of the concrete pedestal; and the reinforcing mesh 6 is arranged between the upper layer of the concrete pedestal and the middle layer of the concrete pedestal.
When in actual use, the concrete pedestal sets up the three-layer and respectively has the efficiency, and concrete pedestal lower floor is as laying the platform of heat preservation heat insulation layer and evaporating the foster coil pipe, and concrete pedestal middle level has the parcel and protects the effect of heat preservation heat insulation layer and evaporating foster coil pipe, and the concrete pedestal upper strata bears the direct load that comes from the piping lane, and the three-layer interact of concrete pedestal complements each other, the better life-span of having guaranteed construction quality and concrete pedestal 2.
Example three:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 1 and 2, on the basis of the first embodiment or the second embodiment, the concrete pedestal 2 is a cuboid made of C20 concrete and having a height of 28-32 cm; the side surface of the concrete pedestal 2, which is internally provided with the heat preservation and insulation layer 3 and the steam-curing coil pipe 4, is provided with a heat preservation belt.
In practical use, the concrete pedestal 2 is made of C20 concrete and is a cuboid with the height of 28-32cm, so that the concrete pedestal is matched with the prefabricated pipe gallery 8 in shape on the basis of meeting the requirement of bearing strength, and the cost is saved.
The heat preservation belt is arranged by adopting the technical scheme, so that materials and cost are saved on the basis of meeting the heat preservation requirement.
Example four:
referring to the prefabricated pipe gallery construction pedestal shown in fig. 2, on the basis of the second embodiment, a prefabricated groove 7 for placing the steam-cured coil pipe 4 is arranged on the upper surface of the lower layer of the concrete pedestal 2.
When in actual use, set up prefabricated slot 7 on the upper surface of concrete pedestal lower floor of concrete pedestal 2, follow-up will evaporate and nourish the coil pipe 4 and place in prefabricated slot 7, the protection that like this can be better evaporates and nourishes coil pipe 4, has prolonged the utility model discloses a life has effectively reduced the maintenance in later stage.
Example five:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 1 and 2, on the basis of the first embodiment, the thickness of the lime soil layer 1 is 55-65cm; the compaction degree of the mortar layer 1 is not less than 95%.
In actual use, the mortar bed 1 is used as a cushion layer of the concrete bed 2 for bearing load. The lime soil layer 1 adopts the technical scheme, so that the requirements of load, geological conditions and the like of the lime soil layer are met, and the material cost is saved.
When the method is applied specifically, the thickness and the strength of the lime soil layer 1 can be adjusted according to actual requirements, so that the use condition is met, and unnecessary damage and waste are reduced.
Example six:
referring to the prefabricated pipe gallery construction pedestal shown in fig. 1 and 2, on the basis of the first embodiment or the second embodiment, the heat insulation layer 3 comprises a plurality of polystyrene plates, aluminum foil paper and a bidirectional steel wire mesh; the polystyrene boards are arranged up and down, and aluminum foil paper is paved between the adjacent polystyrene boards and connected and fixed; the upper surface of the polystyrene board on the uppermost layer is arranged in the bidirectional steel wire mesh, and aluminum foil paper is tiled among the polystyrene boards on the uppermost layer of the bidirectional steel wire mesh.
During the in-service use, heat preservation heat insulation layer 3 adopts the polystyrene board, and aluminium foil paper and two-way wire net are tiled on the benzene board for fixed steam-curing coil pipe 4 and equallyd divide pressure. The heat insulation layer 3 is made of polystyrene plates, so that the heat insulation layer is convenient and economic. In specific application, materials such as foamed cement and the like which are more convenient to construct and have stronger bearing capacity can be adopted according to the requirements of the load, the curing temperature, the service life and the like.
Example seven:
referring to the prefabricated pipe gallery construction pedestal shown in fig. 1 and 2, on the basis of the sixth embodiment, the thickness of the heat-insulating layer 3 is 2.5-3.5 cm; the lapping width of the aluminum foil paper is more than 20mm.
When in actual use, the heat insulation layer 3 adopts the technical scheme, so that the heat insulation function is effectively realized, and the service life is ensured.
Example eight:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 1-3, on the basis of the first embodiment, the steam-curing coil 4 is a cross-linked polypropylene pipe with a pipe diameter of 2 cm; the length of the steam-curing coil 4 is 60-110m.
When in actual use, the steam-curing coil pipe 4 adopts the technical scheme, so that materials are saved on the basis of ensuring the heat supply requirement.
The steam-curing coil 4 can be made of modified polypropylene (PP-C), polypropylene (PP-R) pipe, metal pipe and other materials besides cross-linked polypropylene pipe, and is suitable for short-term prefabrication and can be used by manufacturers engaged in prefabrication for a long time, so that the pedestal has wider usability.
Example nine:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 1 to 3, on the basis of the first embodiment, the second embodiment or the eighth embodiment, the steam-curing coil 4 is a rectangular rotary-type coil made of a whole pipe; two ports of the rectangular steam-curing coil pipe 4 are respectively a water return port and a water supply port, and the water return port and the water supply port are arranged outside the concrete pedestal 2.
When in actual use, the steam-curing coil pipe 4 adopts the technical scheme of whole root laying, so that the steam-curing coil pipe has no interface, is not easy to leak, and is safe and reliable. The steam-curing coil 4 adopts a rectangular rotary mode, which not only can generate uniform surface temperature of the pedestal, but also has smaller bending stress on the material because the coil is only bent by 90 degrees. During specific connection, the adopted accessories are standard parts, so that the operation is simple and the operation is convenient.
In a specific application, the steam-curing coil 4 can adopt other coil modes.
Example ten:
referring to a prefabricated pipe gallery construction pedestal shown in fig. 3, on the basis of the ninth embodiment, the distances between the rectangular rotary type steam-curing coil pipes 4 are gradually reduced from inside to outside.
When in actual use, the steam-curing coil pipe 4 adopts the technical scheme, so that the temperature-raising function can be met, the temperature uniformity of the construction pedestal is ensured, and materials are saved.
Example eleven:
referring to the prefabricated pipe gallery construction pedestal shown in fig. 1, on the basis of the ninth embodiment, the concrete pedestal 2 comprises a concrete pedestal upper layer, a concrete pedestal middle layer and a concrete pedestal lower layer; the heat-insulating layer 3 and the steam-curing coil pipe 4 are arranged between the middle layer of the concrete pedestal and the lower layer of the concrete pedestal; the reinforcing mesh 6 is arranged between the upper layer of the concrete pedestal and the middle layer of the concrete pedestal; the concrete pedestal 2 is a cuboid made of C20 concrete and has a height of 28-32 cm; the side surface of the concrete pedestal 2, which is internally provided with the heat insulation layer 3 and the steam-curing coil pipe 4, is provided with a heat insulation belt; a prefabricated groove 7 for placing the steam-cured coil pipe 4 is formed in the upper surface of the lower layer of the concrete pedestal 2; the thickness of the lime soil layer 1 is 60cm, and the compactness of the lime soil layer 1 is not less than 95%; the heat-insulating layer 3 comprises a plurality of polystyrene boards, aluminum foil paper and a bidirectional steel wire mesh; the polystyrene boards are arranged up and down, and aluminum foil paper is paved between the adjacent polystyrene boards and connected and fixed; the bidirectional steel wire mesh is arranged on the upper surface of the polystyrene plate on the uppermost layer, and aluminum foil paper is paved between the polystyrene plates on the uppermost layer of the bidirectional steel wire mesh; the thickness of the heat insulation layer 3 is 2.5-3.5 cm; the lapping width of the aluminum foil paper is more than 20mm; the steam-curing coil pipe 4 is a cross-linked polypropylene pipe with the pipe diameter of 2 cm; the length of the steam-curing coil pipe 4 is 60-110m; the steam-curing coil 4 is a rectangular rotary coil made of a whole pipe; two ports of the steam-curing coil pipe 4 are respectively a water return port and a water supply port, and the water return port and the water supply port are arranged outside the concrete pedestal 2; the rectangular rotary type steam-curing coil 4 is gradually reduced in interval from the inside to the outside.
In actual use, firstly, cleaning a working base layer according to construction requirements, load grades and the environment of a construction site, after excavation is finished, replacing and filling a 60cm thick 8% lime soil layer 1, pouring 15cm thick C30 concrete as a lower layer of a concrete platform, arranging a prefabricated groove 7 for placing a steam-curing coil 4 on the upper surface of the lower layer of the concrete platform, and then performing galling treatment; then, laying the processed polystyrene board on the lower layer of the concrete pedestal, firmly bonding the polystyrene boards by using a composite aluminum foil paper tape to form a whole, arranging a heat preservation tape with the thickness of 8-10mm and the width of 80mm on the outer side of the pedestal, paving aluminum foil paper on the polystyrene board, and enabling the lap joint width to be larger than 20mm; after the aluminum foil paper is laid, two-way steel wire meshes are laid on the upper portion, mesh openings are aligned, the steel wire meshes are bound and connected, and the steel wire meshes and the heat-insulating layer 3 are jointly fixed on the lower layer of the concrete platform base through steel nails and binding wires, so that the aluminum foil paper and the heat-insulating layer fixing device mainly play a role in fixing the steam-curing coil pipe 4, equalizing pressure and protecting the heat-insulating layer. Carry out water pressure and intensity test to evaporating foster coil pipe 4 before the installation, qualified back is installed it on heat preservation heat insulation layer 3 with coil pipe bail 5, pours concrete platform middle level and the concrete platform upper strata of concrete platform 2 step by step at last to installation reinforcing bar net piece 6 between concrete platform middle level and concrete platform upper strata, with the reinforcing this utility model's performance, guarantee its stability in the construction.
The technical scheme of the utility model be particularly useful for the construction of prefabricated piping lane in cold areas. Adopt the technical scheme of the utility model, guaranteed the required quality of pedestal work progress itself, the effectual prefabricated piping lane 8 of having solved, especially the health preserving problem of prefabricated piping lane 8 bottom.
The utility model discloses a pedestal surface can directly make the piping lane die block prefabricate, and when concrete application, also pre-buried die block is entered and is prefabricated again, and concrete how to operate can be confirmed according to the particular case that requires the piping lane precision.
The utility model discloses also can be used to the prefabrication of other structures, and do not confine the piping lane to. Also can be with the concrete structure thing prefabricated in other places, after hardness reaches the removal requirement, shift to the utility model discloses on carry out the health preserving in later stage.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
While the foregoing is directed to the preferred embodiment of the present invention, the present invention is not intended to be limited to the embodiment shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a prefabricated piping lane construction pedestal which characterized in that: comprises a lime soil layer (1), a concrete pedestal (2), a heat preservation and insulation layer (3), a steam-cured coil pipe (4) and a reinforcing mesh (6); the lime soil layer (1) is paved below the concrete pedestal (2); the heat-insulating layer (3), the steam-curing coil pipe (4) and the reinforcing mesh (6) are horizontally arranged in the concrete pedestal (2) from bottom to top; the steam-curing coil pipe (4) is arranged on the heat-insulating layer (3), and a space is reserved between the steam-curing coil pipe (4) and the reinforcing mesh (6).
2. A prefabricated pipe gallery construction pedestal as claimed in claim 1, wherein: the concrete pedestal (2) comprises a concrete pedestal upper layer, a concrete pedestal middle layer and a concrete pedestal lower layer; the heat-insulating layer (3) and the steam-curing coil pipe (4) are arranged between the middle layer of the concrete platform and the lower layer of the concrete platform; and the reinforcing mesh (6) is arranged between the upper layer of the concrete pedestal and the middle layer of the concrete pedestal.
3. A precast pipe gallery construction platform as claimed in claim 1 or 2, wherein: the concrete pedestal (2) is a cuboid which is made of C20 concrete and has the height of 28-32 cm; the side surface of the concrete pedestal (2) where the heat insulation layer (3) and the steam curing coil pipe (4) are arranged is provided with a heat insulation belt.
4. A precast pipe gallery construction pedestal as set forth in claim 2, wherein: and a prefabricated groove (7) for placing the steam-curing coil pipe (4) is arranged on the upper surface of the lower layer of the concrete pedestal (2).
5. A precast pipe gallery construction pedestal as set forth in claim 1, wherein: the thickness of the lime soil layer (1) is 55-65cm; the compaction degree of the lime soil layer (1) is not less than 95%.
6. A precast pipe gallery construction pedestal as set forth in claim 1 or 2, wherein: the heat-insulating layer (3) comprises a plurality of polystyrene boards, aluminum foil paper and a bidirectional steel wire mesh; the polystyrene boards are arranged up and down, and aluminum foil paper is paved between the adjacent polystyrene boards and connected and fixed; the bidirectional steel wire mesh is arranged on the upper surface of the polystyrene plate on the uppermost layer, and aluminum foil paper is flatly laid between the polystyrene plates on the uppermost layer of the bidirectional steel wire mesh.
7. A precast pipe gallery construction pedestal as set forth in claim 6, wherein: the thickness of the heat-insulating layer (3) is 2.5-3.5 cm; the lapping width of the aluminum foil paper is more than 20mm.
8. A prefabricated pipe gallery construction pedestal as claimed in claim 1, wherein: the steam-curing coil (4) adopts a cross-linked polypropylene pipe with the pipe diameter of 2 cm; the length of the steam-curing coil (4) is 60-110m.
9. A precast pipe gallery construction foundation as set forth in claim 1, 2 or 8, wherein: the steam-curing coil (4) is a rectangular rotary coil made of a whole pipe; two ports of the steam-curing coil pipe (4) are respectively a water return port and a water supply port, and the water return port and the water supply port are arranged outside the concrete pedestal (2).
10. A precast pipe gallery construction pedestal as set forth in claim 9, wherein: the space between the rectangular rotary type steam-curing coil pipes (4) is gradually reduced from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221611613.5U CN217891327U (en) | 2022-06-24 | 2022-06-24 | Prefabricated piping lane construction pedestal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221611613.5U CN217891327U (en) | 2022-06-24 | 2022-06-24 | Prefabricated piping lane construction pedestal |
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| CN217891327U true CN217891327U (en) | 2022-11-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533368A (en) * | 2023-03-27 | 2023-08-04 | 四川省交通建设集团有限责任公司 | Adjustable pedestal |
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2022
- 2022-06-24 CN CN202221611613.5U patent/CN217891327U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533368A (en) * | 2023-03-27 | 2023-08-04 | 四川省交通建设集团有限责任公司 | Adjustable pedestal |
| CN116533368B (en) * | 2023-03-27 | 2024-04-16 | 四川省交通建设集团有限责任公司 | Adjustable pedestal |
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