CN213710053U - Splicing part structure of heat-preservation prefabricated floor slab - Google Patents
Splicing part structure of heat-preservation prefabricated floor slab Download PDFInfo
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- CN213710053U CN213710053U CN202022365823.8U CN202022365823U CN213710053U CN 213710053 U CN213710053 U CN 213710053U CN 202022365823 U CN202022365823 U CN 202022365823U CN 213710053 U CN213710053 U CN 213710053U
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Abstract
The utility model discloses a concatenation department structure of heat preservation precast floor, include, first heat preservation precast floor, second heat preservation precast floor, prefabricated benefit empty heated board and pour the layer, prefabricated benefit empty heated board set up in first heat preservation precast floor with clearance department between the second heat preservation precast floor, in order to shield first heat preservation precast floor with between the second heat preservation precast floor the clearance is in order to pour the formation of pouring layer is supported. After the pouring layer is formed in a pouring mode, the prefabricated air-filling heat-insulation board does not need to be dismantled, integrity and smoothness of the splicing part structure of the heat-insulation prefabricated floor slab can be improved, and the assembling period of the splicing part structure of the heat-insulation prefabricated floor slab is shortened.
Description
Technical Field
The utility model relates to a building field further relates to a concatenation department structure of heat preservation prefabricated floor.
Background
The fabricated building is a building which is formed by transferring a large amount of field operation work in a transmission construction mode to a factory, processing and manufacturing building components and accessories (such as floor slabs, wall plates, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode.
The prefabricated building mainly comprises a prefabricated concrete structure, a steel structure, a modern wood building and the like, and is a representative of a modern industrial production mode due to the adoption of standardized design, industrial production, assembly construction, information management and intelligent application.
At present, in the splicing process of prefabricated floor slabs of an assembly type building, a certain gap often exists between the adjacent prefabricated floor slabs, before a post-cast layer is formed by pouring, supporting plates such as wood plates and the like are usually required to be placed in the gap between the prefabricated floor slabs so as to form the post-cast layer by pouring in the gap between the adjacent prefabricated floor slabs, and after the post-cast layer in the gap between the prefabricated floor slabs is solidified, the supporting plates such as the wood plates and the like are removed.
It should be pointed out that, in the actual splicing process of precast floor slabs, because production error and construction accuracy and other problems adopt the supporting plates such as boards as supports, the unevenness of the post-cast area is easily caused, and after the supporting plates such as boards are removed, the post-cast layer is easily cracked, and the construction effect is affected by chromatic aberration. Especially, in the splicing process of the heat-insulating prefabricated floor slab, the hollow-filling template needs to be installed after the pouring layer is solidified and the supporting plate is detached, and the installation process is complicated.
Still need point out, the backup pad such as plank takes place to warp at the pouring in-process easily, and cracked risk even not only influences the construction effect, can bring huge construction potential safety hazard moreover.
In view of the foregoing, there is a need for an improved splice construction for conventional insulated precast floor slabs.
SUMMERY OF THE UTILITY MODEL
To the technical problem, an object of the utility model is to provide a concatenation department structure of heat preservation prefabricated floor, the clearance between the adjacent heat preservation prefabricated floor of the concatenation department structure of heat preservation prefabricated floor uses prefabricated benefit empty heated board to shelter from to need not demolish prefabricated benefit empty heated board after pouring the completion, can improve the wholeness and the planarization of the concatenation department structure of heat preservation prefabricated floor.
In order to achieve the above object, an object of the present invention is to provide a splicing structure of heat preservation prefabricated floor slab, include:
the first heat-preservation prefabricated floor slab comprises a first prefabricated floor slab and a first heat-preservation plate, and the first heat-preservation plate and the first prefabricated floor slab are arranged in a laminated mode; the first prefabricated floor slab is provided with a first splicing end;
the second heat-insulation prefabricated floor slab comprises a second prefabricated floor slab and a second heat-insulation plate, and the second heat-insulation plate and the second prefabricated floor slab are arranged in a laminated mode; the second prefabricated floor slab is provided with a second splicing end, the first heat-preservation prefabricated floor slab and the second heat-preservation prefabricated floor slab are oppositely arranged, and a gap is formed between the first splicing end and the second splicing end;
the prefabricated gap-filling heat-insulation board is arranged at the gap between the first splicing end and the second splicing end so as to shield the gap between the first splicing end and the second splicing end;
and the pouring layer is poured and formed on one side, far away from the first heat-insulation plate, of the first prefabricated floor slab and one side, far away from the second heat-insulation plate, of the second prefabricated floor slab, and the gap is filled.
In some preferred embodiments of the present invention, the length of the first heat insulation plate is less than that of the first precast floor slab, and the first splicing end extends to the outer side of the first heat insulation plate to form a first protrusion; the length of the second insulation board is smaller than that of the second prefabricated floor slab, and the second splicing end extends to the outer side of the second insulation board to form a second bulge; the first protrusion, the second protrusion, the first heat-insulation plate and the second heat-insulation plate surround to form a containing groove for containing the prefabricated air-filling heat-insulation plate.
In some preferred embodiments of the present invention, the thickness of the prefabricated air-filling insulation board is the same as the thickness of the first insulation board and the second insulation board.
In some preferred embodiments of the present invention, the first protrusion has a first joint surface, and has a first engaging groove formed on the first joint surface; the second bulge is provided with a second splicing surface and a second clamping groove formed on the second splicing surface; prefabricated benefit empty heated board has first end and second end, first end has first joint spare, the second end has second joint spare, first joint spare be suitable for the joint in first draw-in groove, second joint spare be suitable for the joint in the second draw-in groove.
In some preferred embodiments of the present invention, a length dimension of the first engaging groove is greater than a length dimension of the first engaging member, and a length extending direction of the first engaging groove is identical to a length extending direction of the first protrusion; and/or the length dimension of the second clamping groove is larger than that of the second clamping piece, and the length extending direction of the second clamping groove is consistent with that of the first protrusion.
In some preferred embodiments of the present invention, the first protrusion has a first clearance surface, the second protrusion has a second clearance surface, the first card slot has a first filling opening formed in the first clearance surface, and the second card slot has a second filling opening formed in the second clearance surface.
In some preferred embodiments of the present invention, the prefabricated void-filling insulation board further comprises a reinforcement extending outwardly from the first end and the side between the second ends, the reinforcement extending into the gap.
The utility model discloses a in some preferred embodiments, first prefabricated floor first arch with second prefabricated floor the overhanging reinforcing bar has between the second arch, prefabricated benefit empty heated board is located the below of overhanging reinforcing bar, the reinforcement with the crisscross setting of overhanging reinforcing bar.
In some preferred embodiments of the present invention, the reinforcement is a steel bar.
The utility model discloses a in some preferred embodiments, the concatenation department structure of prefabricated floor of heat preservation further includes prefabricated benefit empty floor, prefabricated benefit empty floor with prefabricated benefit empty heated board stromatolite sets up.
1. The utility model provides a concatenation department structure of prefabricated floor keeps warm, the clearance between the adjacent prefabricated floor that keeps warm of the concatenation department structure of prefabricated floor keeps warm uses prefabricated benefit empty heated board to shelter from to need not demolish prefabricated benefit empty heated board after pouring the completion, can improve the wholeness and the planarization of the concatenation department structure of prefabricated floor that keeps warm, shorten the assembly cycle of prefabricated floor concatenation department structure that keeps warm.
2. The utility model provides a concatenation department structure of heat preservation prefabricated floor, the both ends of prefabricated benefit empty heated board respectively with adjacent prefabricated heat preservation floor looks joint, can carry out the preinstallation to prefabricated benefit empty heated board, the installation of the prefabricated benefit empty heated board of being convenient for.
3. The utility model provides a concatenation department structure of prefabricated floor keeps warm, the length dimension of the draw-in groove of prefabricated floor keeps warm is greater than the size of the joint spare on the prefabricated empty heated board of benefit, can improve based on the mounted position of the clearance size adjustment joint spare between the adjacent prefabricated floor that keeps warm prefabricated the commonality of prefabricated empty heated board of benefit.
4. The utility model provides a concatenation department structure of heat preservation prefabricated floor, prefabricated benefit empty heated board the first end with the outside extension in side between the second end forms the reinforcement, the reinforcement sets up with overhanging reinforcing bar is crisscross, can improve prefabricated benefit empty heated board and the joint strength who pours the layer.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.
Fig. 1 is a sectional view showing an assembled state of a splice structure of a prefabricated heat-insulating floor slab according to a preferred embodiment of the present invention;
fig. 2 is a sectional view showing an exploded state of the construction of the splicing part of the prefabricated heat-insulating floor slab according to the preferred embodiment of the present invention;
fig. 3 is an exploded sectional view of a first modified embodiment of the structure of the splicing portion of the prefabricated heat-insulating floor slab according to the preferred embodiment of the present invention;
fig. 4 is a sectional view showing an exploded state of a second modified embodiment of the structure of the splicing part of the prefabricated heat-insulating floor slab according to the preferred embodiment of the present invention.
The reference numbers illustrate:
the prefabricated floor slab comprises a first heat-insulation prefabricated floor slab, a second heat-insulation prefabricated floor slab, a prefabricated gap-filling heat-insulation board, a prefabricated layer 4, a pouring layer 5, overhanging reinforcing steel bars, a prefabricated gap-filling floor slab 6, a first prefabricated floor slab 11, a first heat-insulation board 12, a gap 10, a first splicing end 111, a first bulge 112, a first splicing surface 1121, a first clamping groove 1122, a first clearance surface 1123, a first filling port 1124, a second prefabricated floor slab 21, a second heat-insulation board 22, a receiving groove 20, a second splicing end 211, a second bulge 212, a second splicing surface 2121, a second clamping groove 2122, a second gap surface 2123, a second filling port 2124, a first end 31, a second end 32, a reinforcing part 33, a first clamping part 311 and a second clamping part 321.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Refer to specification attached drawing 1 to fig. 4, the utility model provides a heat preservation precast floor's concatenation department structure, the support before pouring is used to the clearance between the adjacent heat preservation precast floor of heat preservation precast floor's concatenation department structure to need not demolish heat preservation supplementary empty board after pouring the completion, can improve the wholeness and the roughness of heat preservation precast floor concatenation department structure effectively.
Specifically, referring to the attached drawings of the specification, the splicing part structure of the heat-insulation precast floor slab comprises a first heat-insulation precast floor slab 1, a second heat-insulation precast floor slab 2, a prefabricated gap-filling heat-insulation board 3 and a pouring layer 4. First heat preservation precast floor slab 1 includes first precast floor slab 11 and first heated board 12, second heat preservation precast floor slab 2 includes second precast floor slab 21 and second heated board 22. The first precast floor slab 11 is provided with a first splicing end 111, the second precast floor slab 21 is provided with a second splicing end 211, the first heat-preservation precast floor slab 1 and the second heat-preservation precast floor slab 2 are adjacently arranged, the first splicing end 111 and the second splicing end 211 are oppositely arranged, and a gap 10 is formed between the first splicing end 111 and the second splicing end 211. The prefabricated air-filling heat-insulation board 3 is arranged at the gap to shield the gap 10, so that the pouring of the pouring layer 4 is facilitated. And the pouring layer 4 is formed on the pouring sides of the first heat-insulation prefabricated floor slab 1, the second heat-insulation prefabricated floor slab 2 and the prefabricated heat-insulation plate 3 in a pouring mode.
It should be pointed out, the utility model provides a concatenation department structure of heat preservation prefabricated floor uses prefabricated benefit empty heated board 3 shields adjacently first heat preservation prefabricated floor 1 with between the second heat preservation prefabricated floor 2 clearance 10, so that first prefabricated floor 1 one side of second heat preservation prefabricated floor 2 is pour and is formed pour layer 4, and pour layer 4 and pour after accomplishing, needn't will prefabricated benefit empty heated board 3 is demolishd, can improve the wholeness and the planarization of heat preservation prefabricated floor concatenation department structure to can shorten the installation time of heat preservation prefabricated floor concatenation department structure.
Specifically, the length of the first precast floor slab 11 of the first heat-preservation precast floor slab 1 is greater than that of the first heat-preservation plate 12, and the first splicing end 111 of the first precast floor slab 11 extends outwards to the outer side of the first heat-preservation plate 12 to form a first protrusion 112.
The length of the second prefabricated floor slab 21 of the second heat-insulating prefabricated floor slab 2 is greater than that of the second heat-insulating board 22, and the second splicing end 211 of the second prefabricated floor slab 21 extends outwards to the outer side of the second heat-insulating board 22 to form a second protrusion 212.
Preferably, the first protrusion 112 and the second protrusion 212 extend no more than 100mm in length.
The splicing structure of the heat preservation prefabricated floor slab further has a receiving groove 20 formed at one side of the first protrusion 112 and the second protrusion 212 for receiving the prefabricated gap-filling heat preservation plate 3. Preferably, the degree of depth of holding tank 20 with prefabricated benefit empty heated board 3's thickness is the same, works as prefabricated benefit empty heated board 3 install in when in holding tank 20, prefabricated benefit empty heated board 3's bottom with first heated board 12 with the bottom surface of second heated board 22 flushes, can keep warm the roughness of prefabricated floor's concatenation department structure.
In the construction process, the first heat-preservation prefabricated floor slab 1 and the second heat-preservation prefabricated floor slab 2 are hoisted to a preset position, then the prefabricated gap-filling heat-preservation plates 3 are placed in the accommodating grooves 20, the gap-filling heat-preservation plates 3 are supported by using supporting tools, and then the pouring layer 4 is formed by pouring above the first heat-preservation prefabricated floor slab 1 and the second heat-preservation prefabricated floor slab 2. The prefabricated air-filling heat-insulation board 3 can provide support for pouring fluid in the gap 10, and after the pouring layer 4 is solidified, the prefabricated air-filling heat-insulation board 3 can be firmly attached to the pouring layer 4.
Referring to the accompanying drawings 1 and 2 of the specification, the splice structure of the heat-insulating prefabricated floor slab further includes an overhanging steel bar extending from the first splice end 111 and/or the second splice end 211 into the gap 10, and the overhanging steel bar 5 can provide support for the casting fluid cast in the gap 10, so as to improve the structural strength of the casting layer 4.
Referring to the attached drawing 3, the utility model provides a deformation implementation mode of heat preservation precast floor's concatenation department structure is elucidated, and in this deformation implementation mode, the structure of heat preservation precast floor's concatenation department structure is roughly the same with the structure of above-mentioned preferred embodiment, and the difference lies in, prefabricated empty heated board 3 with first heat preservation precast floor 1, the connected mode of second heat preservation precast floor 2.
In the preferred embodiment, the first protrusion 112 has a first splicing surface 1121, and the first protrusion 112 further has a first locking slot 1122 formed on the first splicing surface 1121. The second protrusion 212 has a second mating surface 2121, and the second protrusion 212 further has a second locking groove 2122 formed on the second mating surface 2121.
The prefabricated air-filling insulation board 3 comprises a first end portion 31 and a second end portion 32, when the prefabricated air-filling insulation board 3 is installed in the accommodating groove 20, the first end portion 31 of the prefabricated air-filling insulation board 3 is in contact with the first splicing end 111, and the second end portion 32 is in contact with the second splicing end 211.
The first end of the prefabricated air-filling insulation board 3 is provided with a first clamping piece 311, and the second end is provided with a second clamping piece 321. When the prefabricated air-filling insulation board 3 is installed in the accommodating groove 20, the first clamping piece 311 of the prefabricated air-filling insulation board 3 is clamped in the first clamping groove 1122, and the second clamping piece 321 is clamped in the second clamping groove 2122. Before the pouring layer 4 is formed by pouring, the first clamping piece 311 is clamped in the first clamping groove 1122, and the second clamping piece 321 is clamped in the second clamping groove 2122, so that the prefabricated air-filling insulation board 3 is pre-installed, and the prefabricated air-filling insulation board 3 is convenient to install and support.
Further, the length of the first card slot 1122 is greater than the length of the first card member 311, and the length extending direction of the first card slot 1122 is consistent with the length extending direction of the first protrusion 112. The length of the second locking slot 2122 is greater than that of the second locking member 321, and the length extending direction of the second locking slot 2122 is the same as that of the second protrusion 212. When the prefabricated air-filling insulation board 3 is clamped by the first clamping piece 311 in the first clamping groove 1122 and the second clamping piece 321 in the second clamping groove 2122, the position of the prefabricated air-filling insulation board 3 can be adjusted according to the actual width of the gap 10 so as to adapt to the gap 10 with different sizes.
Referring to FIG. 3 in the specification, the first protrusion 112 further has a first clearance face 1123, the second protrusion 212 further has a second clearance face 2123, the first clearance face 1123 and the second clearance face 2123 are oppositely disposed, and the first clearance face 1123 and the second clearance face 2123 form the gap 10 therebetween.
The first card slot 1122 further has a first fill opening 1124 formed in the first clearance surface 1123, and the second card slot 2122 further has a second fill opening 2124 formed in the second clearance surface 2123. In the process of forming the pouring layer 4 by pouring, the pouring fluid poured into the gap 10 can enter the first clamping groove 1122 along the first filling port 1124 and enter the second clamping groove 2122 along the second filling port 2124, so that the contact area between the pouring layer 4 and the prefabricated gap-filling insulation board 3 can be increased, and the installation stability of the prefabricated gap-filling insulation board 3 is improved.
Further, the prefabricated hollow-backed insulation board 3 further has a reinforcement 33 formed between the first end portion 31 and the second end portion 32, and preferably, the number of the reinforcement 33 is plural. When the prefabricated air-filling insulation board 3 is installed in the accommodating groove 20, the reinforcing member 33 extends into the gap 10 and is staggered with the overhanging reinforcing steel bars 5. When the pouring layer 4 is formed by pouring, the reinforcing member 33 and the overhanging reinforcing steel bar 5 can facilitate the pouring forming of the pouring layer 4 on one hand, and can improve the installation stability of the prefabricated hollow slab 3 on the other hand.
It should be noted that the reinforcing member 33 is a reinforcing bar extending outward from the prefabricated gap-filling floor slab 3. Alternatively, the reinforcing member 33 can be a protrusion integrally extending outward from the prefabricated hollow slab 3. It will be understood that the specific type of the reinforcement 33 of the prefabricated gap-filling floor slab 3 should not constitute a limitation of the present invention.
Referring to the accompanying drawings 4, the present invention provides a second variant embodiment of the splicing part structure of prefabricated heat-insulating floor slab, which is substantially the same as the first variant embodiment in structure, and the difference is that the splicing part structure of the prefabricated heat-insulating floor slab further includes a prefabricated gap floor slab in the second variant embodiment.
Further, the concatenation department structure of heat preservation prefabricated floor further includes prefabricated benefit empty floor 6, prefabricated benefit empty floor 6 with prefabricated benefit empty heated board 3 is stromatolite setting each other, prefabricated benefit empty floor 6 is located prefabricated benefit empty heated board 3's top, prefabricated benefit empty floor 6 can with pour layer 4 and contact, prefabricated benefit empty floor 6 has higher structural strength, can be right prefabricated benefit empty heated board 3 reinforcement improves pour layer 4's stability.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a concatenation department structure of heat preservation precast floor slab which characterized in that includes:
the first heat-preservation prefabricated floor slab comprises a first prefabricated floor slab and a first heat-preservation plate, and the first heat-preservation plate and the first prefabricated floor slab are arranged in a laminated mode; the first prefabricated floor slab is provided with a first splicing end;
the second heat-insulation prefabricated floor slab comprises a second prefabricated floor slab and a second heat-insulation plate, and the second heat-insulation plate and the second prefabricated floor slab are arranged in a laminated mode; the second prefabricated floor slab is provided with a second splicing end, the first heat-preservation prefabricated floor slab and the second heat-preservation prefabricated floor slab are oppositely arranged, and a gap is formed between the first splicing end and the second splicing end;
the prefabricated gap-filling heat-insulation board is arranged at the gap between the first splicing end and the second splicing end so as to shield the gap between the first splicing end and the second splicing end;
and the pouring layer is poured and formed on one side, far away from the first heat-insulation plate, of the first prefabricated floor slab and one side, far away from the second heat-insulation plate, of the second prefabricated floor slab, and the gap is filled.
2. The splicing structure of prefabricated heat-insulating floor slabs according to claim 1, wherein the length of the first heat-insulating plate is less than that of the first prefabricated floor slab, and the first splicing end extends to the outer side of the first heat-insulating plate to form a first bulge; the length of the second insulation board is smaller than that of the second prefabricated floor slab, and the second splicing end extends to the outer side of the second insulation board to form a second bulge; the first protrusion, the second protrusion, the first heat-insulation plate and the second heat-insulation plate surround to form a containing groove for containing the prefabricated air-filling heat-insulation plate.
3. The structure of splicing joints of prefabricated heat-insulating floor slabs according to claim 2, wherein the thickness of the prefabricated gap-filling heat-insulating slab is the same as the thickness of the first heat-insulating slab and the second heat-insulating slab.
4. The structure of splicing joints of prefabricated heat-insulating floor slabs according to claim 2, wherein the first protrusion has a first splicing surface, and has a first clamping groove formed on the first splicing surface; the second bulge is provided with a second splicing surface and a second clamping groove formed on the second splicing surface; prefabricated benefit empty heated board has first end and second end, first end has first joint spare, the second end has second joint spare, first joint spare be suitable for the joint in first draw-in groove, second joint spare be suitable for the joint in the second draw-in groove.
5. The splicing structure of the heat-insulating prefabricated floor slab as claimed in claim 4, wherein the length dimension of the first clamping groove is greater than that of the first clamping piece, and the length extension direction of the first clamping groove is consistent with that of the first protrusion; and/or the length dimension of the second clamping groove is larger than that of the second clamping piece, and the length extending direction of the second clamping groove is consistent with that of the first protrusion.
6. The structure of a splice of precast floor slabs according to claim 5, wherein the first projection has a first clearance surface, the second projection has a second clearance surface, the first card slot has a first filling port formed at the first clearance surface, and the second card slot has a second filling port formed at the second clearance surface.
7. The splice construction of insulated precast floor slabs according to claim 6, wherein the precast void-filled insulation slab further comprises a stiffener extending outwardly from a side between the first end and the second end, the stiffener extending into the gap.
8. The structure of splicing joints of prefabricated floor slabs according to claim 7, wherein an overhanging reinforcing steel bar is arranged between the first protrusion of the first prefabricated floor slab and the second protrusion of the second prefabricated floor slab, the prefabricated gap-filling heat-insulation slab is positioned below the overhanging reinforcing steel bar, and the reinforcing members and the overhanging reinforcing steel bar are arranged in a staggered manner.
9. The structure of splicing joints of prefabricated heat-insulating floor slabs according to claim 8, wherein the reinforcing members are reinforcing bars.
10. The splicing structure of the heat-insulating prefabricated floor slab as claimed in claim 1 or 2, wherein the splicing structure of the heat-insulating prefabricated floor slab further comprises a prefabricated gap-filling floor slab, and the prefabricated gap-filling floor slab and the prefabricated gap-filling heat-insulating plate are arranged in a laminated mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022365823.8U CN213710053U (en) | 2020-10-22 | 2020-10-22 | Splicing part structure of heat-preservation prefabricated floor slab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022365823.8U CN213710053U (en) | 2020-10-22 | 2020-10-22 | Splicing part structure of heat-preservation prefabricated floor slab |
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| CN213710053U true CN213710053U (en) | 2021-07-16 |
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