Hollow floor assembly box cover plate and hollow floor assembly box

Abstract

The utility model belongs to the technical field of hollow floor slabs, and specifically relates to a cover plate of a hollow floor slab assembly box, comprising a plate body, wherein the plate body is provided with cover plate steel bars which are staggeredly distributed transversely and longitudinally, and the cover plate steel bars do not extend out of the plate body; a circle of positioning protrusions extending downwards is provided at the edge of the plate body, and a positioning groove is provided between the outer end surface of the positioning protrusion and the plate body, and the plate body and the positioning protrusion are integrally formed by pouring concrete; the utility model also relates to a hollow floor slab assembly box, comprising a bottom plate, wherein a limiting groove is provided on the edge of the bottom plate; a side wall tube is provided on the bottom plate, the side wall tube is in a hollow structure, and the lower end of the side wall tube is located in the limiting groove; the aforementioned hollow floor slab assembly box cover plate is provided on the top of the side wall tube, and the upper end of the side wall tube is located in the positioning groove of the plate body; the utility model solves the problems of low assembly efficiency of the existing assembly box and the problem that the cover plate easily absorbs moisture of the cast-in-place concrete slab, resulting in cracking of the cast-in-place concrete slab.

Description

Technical Field

[0001] The utility model belongs to the technical field of hollow floor slabs, and in particular relates to a hollow floor slab assembly box cover plate and a hollow floor slab assembly box. Background Art

[0002] With the continuous acceleration of urbanization, more and more people have begun to pay attention to the safety, environmental protection and sustainability of buildings. As a new structural technology in the field of modern construction, the assembled box concrete hollow floor structure has attracted much attention. This technology has the advantages of fast construction speed, light structural weight, and strong seismic performance. It has been widely used in large residential areas, shopping malls, exhibition halls and other places.

[0003] The Chinese utility model with patent number CN 215802562 U discloses a lightweight hollow floor assembly box, including a reinforced concrete bottom plate, an intermediate frame located above the reinforced concrete bottom plate, and a cover plate arranged above the intermediate frame, wherein the intermediate frame is surrounded by a glass magnesium fireproof board to form a rectangular structure, and a partition is also arranged in the middle of the intermediate frame, wherein the height of the partition is flush with that of the intermediate frame, and both the cover plate and the partition plate are made of glass magnesium fireproof board; this assembly box has the advantages of light weight and convenient transportation, but at the construction site, a plurality of wooden strips and fixing nails are required to fix the intermediate frame and the cover plate on the reinforced concrete bottom plate, the assembly steps are many and the operation is cumbersome, the assembly efficiency is low, and the construction efficiency is low; and, when pouring concrete on the cover plate at the construction site, since the cover plate is made of glass magnesium fireproof board, this material easily absorbs moisture in the cast-in-place concrete, causing the cast-in-place concrete plate to easily crack, thereby affecting the construction quality of the hollow floor. Utility Model Content

[0004] The utility model aims to provide a hollow floor assembly box cover plate and a hollow floor assembly box, so as to solve the problems of low assembly efficiency of the existing assembly box and that the cover plate easily absorbs moisture of the cast-in-place concrete slab, resulting in cracking of the cast-in-place concrete slab.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A hollow floor assembly box cover plate comprises a plate body, wherein the plate body is provided with cover plate steel bars which are staggered in transverse and longitudinal directions, and the cover plate steel bars do not extend out of the plate body; a circle of positioning protrusions extending downward is provided at the edge of the plate body, and a positioning groove is provided between the outer end surface of the positioning protrusion and the plate body, and the plate body and the positioning protrusion are integrally formed by pouring concrete.

[0007] Furthermore, at least one reinforcing rib is provided on the plate body, and the reinforcing rib is arranged transversely or longitudinally at the bottom of the plate body, and two ends of the reinforcing rib are connected to the inner end surface of the positioning protrusion.

[0008] Furthermore, at least two reinforcing ribs are provided on the plate body, and the reinforcing ribs are staggered longitudinally and transversely at the bottom of the plate body, and two ends of the reinforcing ribs are connected to the inner end surface of the positioning protrusion.

[0009] Furthermore, a single reinforcing rib forms a "I"-shaped structure transversely; or a single reinforcing rib forms a "|"-shaped structure longitudinally; or two reinforcing ribs form a "2"-shaped structure transversely.

[0010] Furthermore, two reinforcing ribs form a "cross" structure in the transverse and longitudinal directions respectively.

[0011] Furthermore, the cross-section of the reinforcing rib is an isosceles trapezoid, and stress-bearing steel bars are arranged inside the reinforcing rib.

[0012] A hollow floor assembly box comprises a bottom plate with a limiting groove on its edge; a side wall tube is provided on the bottom plate, the side wall tube is hollow in structure, and the lower end of the side wall tube is located in the limiting groove; the top of the side wall tube is provided with the aforementioned hollow floor assembly box cover plate, and the upper end of the side wall tube is located in the positioning groove of the plate body.

[0013] Furthermore, the bottom plate is provided with bottom plate steel bars distributed transversely and longitudinally, both ends of the bottom plate steel bars extend outside the bottom plate, and both ends of the bottom plate steel bars outside the bottom plate are bent upwards.

[0014] Furthermore, the edge of the bottom plate is provided with a limiting protrusion extending upward, the limiting groove is arranged on the outer edge of the limiting protrusion, and the limiting protrusion and the bottom plate are cast in one piece with concrete; a plurality of shear teeth are provided at circumferential intervals along the lower edge of the bottom plate.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] The hollow floor assembly box disclosed by the utility model has a cover plate, a side wall tube and a bottom plate which are all prefabricated in a factory. Positioning protrusions and positioning grooves are arranged on the cover plate, and limiting grooves are arranged on the bottom plate. During installation on the construction site, the lower end of the side wall tube is installed in the limiting groove of the bottom plate, and then the cover plate is buckled on the top of the side wall tube so that the upper end of the side wall tube is located in the positioning groove of the cover plate, and the assembly box is assembled. Compared with the assembly box in the prior art which needs to use wooden strips and fixing nails to fix the cover plate on the top of the side wall tube, the installation steps of the cover plate are simplified, the positioning and installation of the cover plate can be quickly realized, the construction is simple and convenient, the assembly efficiency of the assembly box is improved, and the construction period can be shortened.

[0017] The cover plate disclosed by the utility model is formed by casting concrete. Compared with the prior art which uses the glass magnesium fireproof board as the cover plate, when the top plate of the hollow floor is cast on the cover plate at the construction site, the concrete cover plate will not absorb moisture in the cast-in-place concrete. In addition, the concrete cover plate has high strength and is not easy to deform, which can effectively avoid cracking of the cast-in-place concrete and ensure the overall construction quality of the hollow floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the hollow floor assembly box cover plate of the first embodiment;

[0019] Figure 2 It is a bottom view of the hollow floor assembly box cover plate of the first embodiment;

[0020] Figure 3 It is a cross-sectional view of the hollow floor assembly box of the first embodiment;

[0021] Figure 4 It is a cross-sectional view of the hollow floor assembly box cover plate of the second embodiment;

[0022] Figure 5 It is a top view of the hollow floor assembly box cover plate of the second embodiment;

[0023] Figure 6 It is a top view of the hollow floor assembly box cover plate of Example 3;

[0024] Figure 7 It is a top view of the hollow floor assembly box cover plate of the fourth embodiment;

[0025] Figure 8 This is a top view of the hollow floor assembly box cover plate of Example 5. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The reference numerals in the drawings of the specification include:

[0028] Plate body 1, cover plate reinforcement 2, positioning protrusion 3, positioning groove 4, reinforcing rib 5, load-bearing reinforcement 6, bottom plate 7, bottom plate reinforcement 8, limiting protrusion 9, limiting groove 10, shear tooth 11, side wall tube 12. Embodiment 1

[0029] like Figure 1 and 2 As shown, a hollow floor assembly box cover comprises a plate body 1, in which cover plate steel bars 2 are embedded in a transverse and longitudinal staggered manner, and the cover plate steel bars 2 do not extend out of the plate body 1; a circle of positioning protrusions 3 extending downward are provided at the edge of the plate body 1, and a positioning groove 4 is formed between the outer end surface of the positioning protrusion 3 and the plate body 1; the plate body 1 and the positioning protrusion 3 are cast in one piece by concrete.

[0030] The slab body 1 of the utility model is formed by pouring concrete. The slab body 1 has high strength and is not easy to deform. When the top plate of the hollow floor is poured on the cover plate at the construction site, the concrete slab body 1 will not absorb moisture in the cast-in-place concrete, which can effectively avoid cracking of the cast-in-place concrete slab body 1 and ensure the overall construction quality of the hollow floor.

[0031] like Figure 3 As shown, a hollow floor assembly box includes a base plate 7, in which transverse and longitudinal base plate steel bars 8 are pre-embedded, respectively, and both ends of the base plate steel bars 8 extend to the outside of the base plate 7, and both ends of the base plate steel bars 8 outside the base plate 7 are bent upward; the edge of the base plate 7 is provided with a circle of upwardly extending limiting protrusions 9, and the outer edge of the limiting protrusions 9 is formed with limiting grooves 10; a plurality of shear teeth 11 are circumferentially spaced along the lower edge of the base plate 7; a side wall tube 12 is provided on the base plate 7, and the side wall tube 12 is a hollow structure, and the lower end of the side wall tube 12 is located in the limiting groove 10; the top of the side wall tube 12 is provided with the hollow floor assembly box cover plate described in this embodiment, and the upper end of the side wall tube 12 is located in the positioning groove 4 of the plate body 1.

[0032] The assembly box of the utility model, whose cover plate, side wall tube 12 and bottom plate 7 are all prefabricated in the factory, by arranging the positioning protrusion 3 and the positioning groove 4 on the cover plate, and arranging the limiting groove 10 on the bottom plate 7; when installing on the construction site, the lower end of the side wall tube 12 is installed in the limiting groove 10 of the bottom plate 7, and then the cover plate is buckled on the top of the side wall tube 12, so that the upper end of the side wall tube 12 is located in the positioning groove 4 of the cover plate, and the assembly box is assembled; during the assembly process, the positioning and installation of the cover plate can be quickly realized without using wooden strips and fixing nails, which simplifies the installation steps of the cover plate, makes the construction simple and convenient, improves the assembly efficiency of the assembly box, and can shorten the construction period. Embodiment 2

[0033] A hollow floor assembly box cover plate, the difference between this embodiment and the first embodiment is: Figure 4 and 5 As shown, a reinforcing rib 5 is provided at the bottom of the plate body 1, and the reinforcing rib 5 forms a "|"-shaped structure longitudinally. The reinforcing rib 5 extends downward along the surface of the plate body 1. The cross-section of the reinforcing rib 5 is an isosceles trapezoid. Stress-bearing steel bars 6 are embedded in the reinforcing rib 5. Both ends of the reinforcing rib 5 are connected to the inner end faces of the positioning protrusions 3. The reinforcing rib 5, the plate body 1, and the positioning protrusions 3 are cast as a whole.

[0034] In this embodiment, by providing reinforcing ribs 5 and stress-bearing steel bars 6 at the bottom of the plate body 1, the strength of the plate body 1 can be further improved to prevent the plate body 1 from deforming and affecting the construction quality of the hollow floor.

[0035] A hollow floor assembly box, the difference between this embodiment and the first embodiment is that the hollow floor assembly box cover plate described in this embodiment is used. Embodiment 3

[0036] A hollow floor assembly box cover plate, the difference between this embodiment and the second embodiment is: Figure 6 As shown, the reinforcing ribs 5 form a "I"-shaped structure laterally at the bottom of the plate body 1.

[0037] A hollow floor assembly box, the difference between this embodiment and the second embodiment is that the hollow floor assembly box cover plate described in this embodiment is used. Embodiment 4

[0038] A hollow floor assembly box cover plate, the difference between this embodiment and the second embodiment is: Figure 7 As shown, two reinforcing ribs 5 are provided at the bottom of the plate body 1, and the two reinforcing ribs 5 form a "two"-shaped structure transversely.

[0039] A hollow floor assembly box, the difference between this embodiment and the second embodiment is that: the hollow floor assembly box cover plate described in this embodiment is used. Embodiment 5

[0040] A hollow floor assembly box cover plate, the difference between this embodiment and the fourth embodiment is: Figure 8 As shown, the two reinforcing ribs 5 form a "cross" structure in the transverse and longitudinal directions respectively.

[0041] A hollow floor assembly box, the difference between this embodiment and the fourth embodiment is that: the hollow floor assembly box cover plate described in this embodiment is used.

[0042] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A hollow floor assembly box cover plate, characterized in that: It includes a plate body, which is provided with cover plate steel bars which are staggered in the horizontal and vertical directions, and the cover plate steel bars do not extend out of the plate body; the edge of the plate body is provided with a circle of positioning protrusions extending downward, and a positioning groove is provided between the outer end surface of the positioning protrusion and the plate body, and the plate body and the positioning protrusion are cast in one piece by concrete.

2. The hollow floor assembly box cover plate according to claim 1, characterized in that: At least one reinforcing rib is arranged on the plate body, and the reinforcing rib is arranged horizontally or longitudinally at the bottom of the plate body, and two ends of the reinforcing rib are connected to the inner end surface of the positioning protrusion.

3. The hollow floor assembly box cover plate according to claim 1, characterized in that: At least two reinforcing ribs are arranged on the plate body, and the reinforcing ribs are staggered longitudinally and transversely at the bottom of the plate body, and the two ends of the reinforcing ribs are connected to the inner end surface of the positioning protrusion.

4. The hollow floor assembly box cover plate according to claim 2, characterized in that: A single reinforcing rib forms a "I"-shaped structure transversely; or a single reinforcing rib forms a "|"-shaped structure longitudinally; or two reinforcing ribs form a "2"-shaped structure transversely.

5. The hollow floor assembly box cover plate according to claim 3, characterized in that: Two reinforcing ribs form a "cross" structure horizontally and vertically.

6. A hollow floor assembly box cover according to any one of claims 2-5, characterized in that: The cross section of the reinforcing rib is an isosceles trapezoid, and stress-bearing steel bars are arranged inside the reinforcing rib.

7. A hollow floor assembly box, characterized in that: It includes a base plate with a limiting groove on its edge; a side wall tube is provided on the base plate, the side wall tube is hollow, and the lower end of the side wall tube is located in the limiting groove; the top of the side wall tube is provided with a hollow floor assembly box cover as described in any one of claims 1-6, and the upper end of the side wall tube is located in the positioning groove of the plate body.

8. The hollow floor assembly box according to claim 7, characterized in that: The bottom plate is provided with bottom plate steel bars which are distributed transversely and longitudinally. Both ends of the bottom plate steel bars extend outside the bottom plate. Both ends of the bottom plate steel bars located outside the bottom plate are bent upwards.

9. The hollow floor assembly box according to claim 7, characterized in that: The edge of the bottom plate is provided with a limiting protrusion extending upward, the limiting groove is arranged on the outer edge of the limiting protrusion, and the limiting protrusion and the bottom plate are cast in one piece with concrete; a plurality of shear teeth are arranged at intervals along the circumference of the lower edge of the bottom plate.

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