A closed double panel

Abstract

The utility model relates to a closed double -sided board, including double -sided board and pouring box, double -sided board has cavity and with the first pouring hole of cavity intercommunication, pouring box is located in the cavity, and pouring box has first wallboard, and first wallboard corresponds the second pouring hole of first pouring hole and set up. The application realizes integral one -time cast -in -situ by embedding pouring box in the cavity, need not reserve manhole. And, the second pouring hole is aligned with the first pouring hole, ensures that concrete is vertically injected, avoids slurry splashing, and improves appearance flatness.

Description

Technical Field

[0001] This utility model relates to the field of cast-in-place building structure technology, specifically to a closed double-layer slab. Background Technology

[0002] Traditional closed double-layer slab construction requires phased construction: first, pour the lower slab and beams → erect internal scaffolding → pour the upper slab through pre-reserved manholes → finally seal the manholes. However, in beam-type staircase structures, the inclined beams of the staircase obstruct scaffolding erection, making the pre-reserved manhole solution impossible, necessitating the use of a monolithic cast-in-place process. If poured directly, air cannot escape from the cavities, resulting in uneven concrete filling and defects such as honeycombing and hollow areas. Furthermore, vibration is difficult, leading to substandard structural strength and appearance quality. Utility Model Content

[0003] Based on the above description, this utility model provides a closed double-layer slab, which aims to solve the problem that the existing closed double-layer slab manhole reservation scheme cannot realize the overall cast-in-place process.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A closed double-layer panel, comprising:

[0006] A double-layer plate having a cavity and a first casting hole communicating with the cavity;

[0007] A casting box is disposed in the cavity. The casting box has a first wall panel, and a second casting hole is opened on the first wall panel corresponding to the first casting hole.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the first wall panel has a plurality of ventilation holes, which are arranged at intervals around the axis of the second casting hole.

[0010] Furthermore, the casting box has a second wall panel opposite to the first wall panel, and the second wall panel has a diversion protrusion extending toward the first wall panel on one side relative to the first wall panel.

[0011] Furthermore, the casting box includes a box body, a box cover, and connectors. The box cover is connected to the box body through multiple connectors. The box body serves as the first wall panel, and the bottom wall of the box body serves as the second wall panel.

[0012] Furthermore, the cover has a stepped hole corresponding to each of the connectors. The stepped hole has a through hole and at least one pair of stepped surfaces. Each pair of stepped surfaces is arranged symmetrically. The connector includes a base and a fixing piece. The number of fixing pieces is related to the number of stepped surfaces. The fixing piece is disposed on the base. The fixing piece has multiple through holes. The stepped surface has a screw hole corresponding to each through hole. The part of the fixing piece with the through hole passes through the through hole and is bent and pressed onto the stepped surface.

[0013] Furthermore, the casting box includes vent pipes, the number of which is related to the number of vent holes. The vent pipes are disposed inside the box, and one end of each vent pipe is connected to a vent hole.

[0014] Furthermore, the vent pipe is provided with multiple air inlets.

[0015] Furthermore, the casting box includes positioning rods, the number of which is related to the number of vent pipes. The positioning rods are located on the bottom wall of the box body on the side opposite to the box cover, and one end of the positioning rod away from the bottom wall of the box body is inserted into the other end of the vent pipe.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] (1) This application achieves one-time in-situ casting by pre-embedding the casting box in the cavity, without the need to reserve a manhole. Furthermore, the second casting hole is aligned with the first casting hole to ensure vertical injection of concrete, avoid slurry splashing, and improve the smoothness of the appearance.

[0018] (2) This application allows auxiliary gas to be naturally discharged during concrete pouring through the vent holes, reducing the need for vibration and avoiding damage to the positioning of the reinforcing bars.

[0019] (3) This application enables rapid assembly of the casting box through the connector, thereby improving assembly efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view of a closed double-layer plate provided in an embodiment of the present utility model;

[0022] Figure 2This is a top view of the casting box in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the casting box in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the box body in an embodiment of the present utility model;

[0025] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0026] Figure 6 This is a schematic diagram of the box lid structure in an embodiment of the present utility model;

[0027] Figure 7 for Figure 6 Enlarged view of section B in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Double-layer slab; 11. First pouring hole;

[0030] 20. Casting box; 21. Second casting hole; 22. Vent hole; 23. Diversion protrusion; 24. Box body; 25. Box cover; 251. Step hole; 2511. Through hole; 2512. Step surface; 26. Connector; 261. Base; 262. Fixing plate; 27. Vent pipe; 28. Positioning rod. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0034] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0035] Reference Figures 1 to 2 As shown, this utility model provides a technical solution: a closed double-layer plate, including a double-layer plate 10 and a casting box 20; the double-layer plate 10 has a cavity and a first casting hole 11 communicating with the cavity; the casting box 20 is disposed in the cavity, the casting box 20 has a first wall plate, and the first wall plate has a second casting hole 21 corresponding to the first casting hole 11.

[0036] In this embodiment, by pre-embedding the casting box 20 within the cavity, a single, in-situ casting is achieved, eliminating the need for pre-drilled manholes. Furthermore, the second casting hole 21 is aligned with the first casting hole 11 to ensure vertical concrete injection, preventing slurry splashing and improving the smoothness of the surface.

[0037] Reference Figure 3 As shown, in some embodiments, a plurality of vent holes 22 are provided on the first wall panel, and the plurality of vent holes 22 are arranged at intervals around the axis of the second casting hole 21.

[0038] In this embodiment, during concrete pouring, the ventilation holes 22 assist in the natural discharge of gas, reducing the need for vibration and avoiding damage to the positioning of the reinforcing bars.

[0039] Reference Figure 4 As shown, in some embodiments, the casting box 20 has a second wall panel opposite to the first wall panel, and the second wall panel has a diversion protrusion 23 extending toward the first wall panel on one side opposite to the first wall panel.

[0040] In this embodiment, the concrete is evenly spread along the bottom of the cavity by the diversion protrusion 23, which can eliminate dead corners in the edge filling.

[0041] Reference Figures 3 to 4 and Figure 6 As shown, in some embodiments, the casting box 20 includes a box body 24, a box cover 25 and connectors 26. The box cover 25 is connected to the box body 24 through multiple connectors 26. The box body 24 serves as a first wall panel, and the bottom wall of the box body 24 serves as a second wall panel.

[0042] In this embodiment, the casting box 20 is designed in a split manner, which enables rapid assembly of the casting box 20 and thus improves assembly efficiency.

[0043] Reference Figures 3 to 7 As shown, in some embodiments, the cover 25 has a stepped hole 251 corresponding to each connector 26. The stepped hole 251 has a through hole 2511 and at least one pair of stepped surfaces 2512. Each pair of stepped surfaces 2512 is arranged symmetrically. The connector 26 includes a base 261 and a fixing piece 262. The number of fixing pieces 262 is related to the number of stepped surfaces 2512. The fixing piece 262 is disposed on the base 261. The fixing piece 262 has a plurality of through holes. The stepped surface 2512 has a screw hole corresponding to each through hole. The part of the fixing piece 262 with the through hole passes through the through hole 2511 and is bent and pressed onto the stepped surface 2512.

[0044] In this embodiment, for each connector 26, before the fixing piece 262 is bent, the two fixing pieces 262 remain parallel. When the cover 25 is closed with the box body 24, part of the fixing piece 262 through the through hole first passes through the through hole 2511, and then bends 90° to press against the stepped surface 2512. At the same time, the fastener passes through the through hole and engages with the screw hole thread to press the cover 25, thereby fixing the cover 25 to the box body 24.

[0045] Reference Figure 6 As shown, in some embodiments, the casting box 20 includes a vent pipe 27, the number of which is related to the number of vent holes 22. The vent pipe 27 is disposed inside the box body 24, and one end of the vent pipe 27 is connected to the vent hole 22 in a corresponding manner.

[0046] In this embodiment, the vent pipe 27 is used to extract air bubbles from the bottom of the wooden box, thus solving the problem of blind spots in vibration.

[0047] Reference Figure 6 As shown, in some embodiments, the vent pipe 27 has multiple air inlets.

[0048] In this embodiment, the air inlet on the vent pipe 27 extends the exhaust path, preventing concrete from clogging the vent pipe 27. The vent pipe 27 collects residual air bubbles in the middle of the cavity, improving the thoroughness of exhaust. This increases the gas capture area of ​​the air inlet, further reducing the void ratio.

[0049] Reference Figure 4 As shown, in some embodiments, the casting box 20 includes positioning rods 28, the number of which is related to the number of vent pipes 27. The positioning rods 28 are located on the bottom wall of the box body 24 on the side opposite to the box cover 25, and one end of the positioning rod 28 away from the bottom wall of the box body 24 is inserted into the other end of the vent pipe 27.

[0050] In this embodiment, when the lid 25 closes the box body 24, the vent pipe 27 and the positioning rod 28 cooperate to position the lid 25, preventing the lid 25 from shifting and improving the installation efficiency of the lid 25.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A closed double-layer board, characterized in that, include: The double-layer plate (10) has a cavity and a first casting hole (11) communicating with the cavity. A casting box (20) is provided in the cavity. The casting box (20) has a first wall panel, and the first wall panel has a second casting hole (21) corresponding to the first casting hole (11).

2. The closed double-layer board according to claim 1, characterized in that, The first wall panel has a plurality of ventilation holes (22) arranged at intervals around the axis of the second casting hole (21).

3. A closed double-layer board according to claim 2, characterized in that, The casting box (20) has a second wall panel opposite to the first wall panel, and the second wall panel has a diversion protrusion (23) extending toward the first wall panel on one side opposite to the first wall panel.

4. A closed double-layer board according to claim 3, characterized in that, The casting box (20) includes a box body (24), a box cover (25) and connectors (26). The box cover (25) is connected to the box body (24) through multiple connectors (26). The box body (24) serves as the first wall panel, and the bottom wall of the box body (24) serves as the second wall panel.

5. A closed double-layer board according to claim 4, characterized in that, The cover (25) has a stepped hole (251) for each of the connectors (26). The stepped hole (251) has a through hole (2511) and at least one pair of stepped surfaces (2512). Each pair of stepped surfaces (2512) is arranged symmetrically. The connector (26) includes a base (261) and a fixing piece (262). The number of fixing pieces (262) is related to the number of stepped surfaces (2512). The fixing piece (262) is disposed on the base (261). The fixing piece (262) has multiple through holes. The stepped surface (2512) has a screw hole for each through hole. The part of the fixing piece (262) with the through hole passes through the through hole (2511) and is bent and pressed onto the stepped surface (2512).

6. A closed double-layer board according to claim 5, characterized in that, The casting box (20) includes a vent pipe (27), the number of which is related to the number of vent holes (22). The vent pipe (27) is located inside the box body (24), and one end of the vent pipe (27) is connected to the vent hole (22) in a corresponding manner.

7. A closed double-layer board according to claim 6, characterized in that, The vent pipe (27) has multiple air inlets.

8. A closed double-layer board according to claim 6, characterized in that, The casting box (20) includes positioning rods (28), the number of which is related to the number of vent pipes (27). The positioning rods (28) are located on the bottom wall of the box body (24) on the side opposite to the box cover (25). One end of the positioning rod (28) away from the bottom wall of the box body (24) is inserted into the other end of the vent pipe (27).

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