CN111139960A

CN111139960A - Improve built-in metal combination mandrel of hollow superstructure of fire prevention grade

Info

Publication number: CN111139960A
Application number: CN202010054341.2A
Authority: CN
Inventors: 邹永刚
Original assignee: Hunan Zhongxing Architectural Structure Technology Co ltd
Current assignee: Hunan Zhongxing Architectural Structure Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-05-12

Abstract

The invention discloses a metal combined core mould arranged in a hollow floor system for improving the fire-proof grade, which comprises a core mould shell, wherein the core mould shell is formed by mechanically pressing a metal material, the peripheral edge of the bottom of the core mould shell is provided with a convex edge, the convex edge is provided with a clamping device, vertical through holes are formed at intervals, and transverse reinforcing ribs are arranged at intervals on the upper surface of the core mould shell; the invention has the mortises and the tenons on the core mould, and the two core mould shells are assembled into the core mould through the matching of the mortises and the tenons, thereby needing no assembly parts, simplifying the installation procedure, saving the assembly parts and reducing the cost.

Description

Improve built-in metal combination mandrel of hollow superstructure of fire prevention grade

Technical Field

The invention relates to a core mold, in particular to a metal combined core mold arranged in a hollow floor and used for improving the fire-proof grade.

Background

At present, in the technical field of cast-in-place steel disc concrete hollow floor systems, square core moulds with various specifications are usually adopted and placed on reinforcing steel bars of a template floor surface paved on the hollow floor system or in dense reinforcing beam grids, laying and binding upper gluten after integral or single anti-floating, then pouring concrete to form a hollow floor, however, after the formwork of the existing hollow floor is removed, the phenomena of steel bar exposure, honeycomb holes, cracking, water seepage and the like on the bottom surface of the concrete floor generally exist, so that the hollow floor has serious hidden danger of construction quality, the main reason in this respect is that the filling core mould of the hollow floor is a square core mould, the concrete can not flow to the middle position of the square core die when the concrete is poured and vibrated, so that the bottom surface of the concrete floor slab is not compact, the engineering quality hidden trouble exists, therefore, a strip-shaped core mold is designed, and a square core mold is formed by two strip-shaped core molds, so that the problems are solved; however, common core mold products in the market at present comprise organic materials and inorganic materials, the organic materials are mostly polyphenyl, the inorganic materials are made of cement fibers and gypsum, the core mold products made of polyphenyl materials are poor in fireproof performance, the polyphenyl materials release harmful gases in case of fire, potential safety hazards exist, the core mold made of cement fibers or stone is poor in strength, the loss rate of the core mold in the transportation and installation processes is high, the dead weight of the core mold products is large, the transportation cost, the material transportation cost and the installation cost are increased, metal core mold products also appear in the market in recent years, the metal core mold products have the characteristic of high strength, most of the metal core mold products are complex in manufacturing procedures, and a large amount of labor is required for transportation and installation, so that the manufacturing cost and the installation cost are increased.

Disclosure of Invention

The invention aims to: the metal combined core mould is arranged in the hollow floor slab, the fireproof grade of the metal combined core mould reaches A grade, the metal combined core mould is not easy to burn in case of fire, no toxic gas is generated, and the requirement of the hollow floor slab filler on fire prevention is well met.

The technical scheme adopted by the invention is as follows: the utility model provides a hollow superstructure embeds metal combination mandrel of improvement fire-protection rating, includes the mandrel casing, the mandrel casing is formed through mechanical pressing by metal material, and the border is equipped with protruding edge around the bottom of this mandrel casing, is equipped with the block device on this protruding edge to the interval is opened there is the vertically through-hole, mandrel casing upper surface interval is provided with horizontal reinforcement rib.

The working principle of the invention is as follows: the core mould shell is produced and transported in full-automatic batch production according to design requirements, and a plurality of transverse reinforcing ribs are regularly arranged on the outer surface of the core mould shell, so that the self supporting strength is improved; from the structure appearance, the mandrel shell is the loudspeaker of expanding outward, can repeat the stack and place, makes transport, store more convenient to protruding edge one side is the tongue-and-groove, and the another side is the tenon, only needs during the installation tenon card to go into the tongue-and-groove and accomplish two mandrel shell equipment promptly, equipment convenient and fast.

Furthermore, the metal combined core mold is a hollow block body formed by splicing two core mold shells, so that the self weight is reduced.

Further, the block device includes tenon and mortise, the tenon distributes on half border on protruding edge, and the mortise distributes on half border on protruding edge, and the position, shape, size, length of tenon and mortise correspond, and tenon and mortise and tenon cooperation of another mandrel shell use, need not additional connection fittings during assembling in addition, and the cost is reduced, the installation step of simplifying.

Further, the tenon is a convex groove, and the mortise is a concave groove; simple process and stable structure.

Further, the tenon is a cylinder or a polyhedron, and the mortise is a counter bore corresponding to the cylinder or the polyhedron; the positioning is accurate, and the precision is higher.

Furthermore, the core mold shell is formed by mechanically pressing galvanized iron sheets, and is formed in one step, produced in batches, stable in overall structure and uniform in shape and specification.

Further, the core mold shell is a strip-shaped core mold shell, and the width of the core mold shell is 2/5-9/20 of the length; the two core moulds can form a square core mould with a gap, and the phenomenon that concrete at the bottom of a larger square core mould is not compact in the prior art is overcome.

Furthermore, 8-12 through holes are formed in the convex edge of the core mold shell at vertical intervals, 4 through holes are used for installing self-drilling screw rods to resist floating of the core mold, and 4 through holes are used for installing accessory installation holes connected between two adjacent core molds.

Further, the lateral reinforcing ribs are reinforcing ribs recessed inward in the lateral direction of the core mold housing; the transverse reinforcing ribs are inwards sunken, so that the upper flange steel bar and the lower flange steel bar can be stabilized, good gripping force is generated, and the steel bars can be stabilized more.

Furthermore, the section of the metal combined core mold is oval, round or polygonal, so that core molds in various shapes can be produced to meet the requirements of different processes.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the invention solves the problems of isolation, cushion layer, displacement, anti-floating and the like which can be solved by adding auxiliary materials in the prior art, greatly improves the construction progress on the process efficiency, particularly saves manpower and auxiliary materials on the anti-floating and displacement of products, is greatly simple and convenient in the construction process, and compared with the prior art, the invention has the advantages that the anti-floating of the prior art does not need to punch a template, pave reinforcing steel bars, bind iron wires, place cushion blocks, and manually process the upper working surface and the lower working surface of the template; the anti-floating method is implemented only on the working surface of the product;

2. according to the invention, from the structural appearance, the core mould body is an external expansion horn, the core mould body can be repeatedly stacked and placed, and the moving, the transportation and the storage are greatly improved;

3. the invention is fully-automatic production one-step molding, the transverse reinforcing ribs are inwards sunken, so that the upper flange steel bar and the lower flange steel bar can be stabilized, good wrapping force is generated, and the steel bars can be more stabilized;

4. the invention has simple and rapid assembly and high working efficiency, the arc oblique angle of the core mould well enhances the fluidity of the concrete when pouring, ensures the quality of the concrete, the self-provided transverse reinforcing rib has stability, can well generate bond force with the upper flange steel bar, has simple and convenient construction, saves concrete, reduces the cost and improves the quality of the hollow floor;

5. the invention adopts a novel anti-floating measure processing method, the anti-floating is only carried out on the working surface of the template, the drill tail screw rod and the anti-floating gasket directly pass through the through hole on the convex edge and are fixed on the template, thus breaking through the traditional anti-floating complex working procedures that the template needs to be punched, and the upper working surface and the lower working surface are bound by iron wires to resist the floating;

6. the hollow floor slab filling body is formed by mechanically pressing galvanized iron sheets, the fireproof grade of the galvanized iron sheets can reach A level, the galvanized iron sheets are not easy to burn in case of fire, and no toxic gas is generated, so that the requirement of the hollow floor slab filling body on fire prevention is well met;

8. the core mould is provided with the mortises and the tenons, and the two core mould shells are assembled into the core mould through the matching of the mortises and the tenons, so that the core mould does not need to be assembled with spare and accessory parts, simplifies the installation process, saves the assembled spare and accessory parts and reduces the cost.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the assembled structure of the present invention;

fig. 2 is a schematic cross-sectional view of the core mold shell of the present invention;

fig. 3 is a schematic top view of the core mold shell of the present invention;

labeled as: 1-core mould shell, 1.1-transverse reinforcing ribs, 1.2-mortises, 1.3-tenons, 1.4-convex edges and 1.5-through holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-3, a metal combined core mold built in a hollow floor slab for improving fire-proof rating comprises a core mold shell 1, wherein the core mold shell 1 is formed by mechanically pressing a metal material, a convex edge 1.4 is arranged on the peripheral edge of the bottom of the core mold shell 1, a clamping device is arranged on the convex edge 1.4, vertical through holes 1.5 are arranged at intervals, and transverse reinforcing ribs 1.1 are arranged at intervals on the upper surface of the core mold shell 1.

The working principle of the invention is as follows: the core mould shell 1 is produced and transported, and is produced in batch according to the design requirement, and a plurality of transverse reinforcing ribs are regularly arranged on the outer surface of the core mould shell 1, so that the self supporting strength is improved; from the structure appearance, mandrel shell 1 is the loudspeaker that expands outward, can repeat the stack and place, makes transport, store more convenient to protruding along 1.4 one side is tongue-and-groove 1.2, and the another side is tenon 1.3, only needs during the installation tenon 1.3 card to go into and accomplish two mandrel shell 1 equipment in tongue-and-groove 1.2 promptly, assembles convenient and fast.

Example 2

In addition to embodiment 1, the metal combined core mold is a hollow block body formed by assembling two core mold shells 1, so that the self weight is reduced.

Example 3

On embodiment 1 basis, the block device includes tenon 1.3 and mortise 1.2, tenon 1.3 distributes on protruding along 1.4 half border, and mortise 1.2 distributes on protruding along 1.4 half border, and the position, shape, size, length of tenon 1.3 and mortise 1.2 correspond, and tenon 1.3 and mortise 1.2 use with the cooperation of another mortise 1.2 and tenon 1.3 of mandrel casing 1, need not additional connecting fittings during assembling, the cost is reduced, the installation step of simplification.

Example 4

On the basis of embodiment 3, the tenon 1.3 is a tongue groove, and the tongue groove 1.2 is a groove; simple process and stable structure.

Example 5

On the basis of the embodiment 3, the tenon 1.3 is a cylinder or a polyhedron, and the mortise 1.2 is a counter bore corresponding to the cylinder or the polyhedron; the positioning is accurate, and the precision is higher.

Example 6

On the basis of any one of embodiments 1 to 5, the core mold shell 1 is formed by mechanically pressing galvanized iron sheets, is formed in one step, is produced in batches, and is stable in overall structure and uniform in shape and specification.

Example 7

In any one of embodiments 1 to 5, the core mold shell 1 is a strip-shaped core mold shell 1, and the width of the core mold shell 1 is 2/5 to 9/20 of the length; the two core moulds can form a square core mould with a gap, and the phenomenon that concrete at the bottom of a larger square core mould is not compact in the prior art is overcome.

Example 8

On the basis of any one of embodiments 1 to 5, 8 to 12 through holes 1.5 are formed in the convex edge 1.4 of the core mold shell 1 at a vertical interval, 4 through holes 1.5 are used for installing self-drilling screw rods to resist the core mold from floating, and 4 through holes 1.5 are used for installing accessories connected between two adjacent core molds.

Example 9

On the basis of any of embodiments 1 to 5, the transverse reinforcing ribs 1.1 are reinforcing ribs recessed inward in the transverse direction of the core mold housing 1; the transverse reinforcing ribs 1.1 are inwards sunken to stabilize the upper flange reinforcing steel bars and the lower flange reinforcing steel bars, so that good gripping force is generated, and the reinforcing steel bars can be stabilized more.

Example 10

On the basis of any one of embodiments 1-5, the section of the metal combined core mold is oval, round or polygonal, and core molds with various shapes can be produced to meet the requirements of different processes.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. The utility model provides a hollow superstructure of improving fire rating embeds metal combination mandrel, includes mandrel casing (1), its characterized in that, mandrel casing (1) is formed through mechanical pressing by metal material, and the border is equipped with protruding edge (1.4) around the bottom of this mandrel casing (1), is equipped with the block device on this protruding edge (1.4) to the interval is opened has vertically through-hole (1.5), mandrel casing (1) upper surface interval is equipped with horizontal reinforcement rib (1.1).

2. The metal combined core mold arranged in the hollow floor slab for improving the fire-retardant rating as claimed in claim 1, wherein the metal combined core mold is a hollow block body formed by assembling two core mold shells (1).

3. The metal composite core mould arranged in the hollow floor slab for improving the fire-retardant rating according to claim 1, wherein the clamping device is of a mortise and tenon joint structure and comprises tenons (1.3) and mortises (1.2), the tenons (1.3) are distributed on one half edge of the convex edge (1.4), the mortises (1.2) are distributed on the other half edge of the convex edge (1.4), the positions, the shapes, the sizes and the lengths of the tenons (1.3) and the mortises (1.2) are corresponding, and the tenons (1.3) and the mortises (1.2) are matched with the mortises (1.2) and the tenons (1.3) of another core mould shell (1).

4. The built-in metal combination core mould for the hollow floor system for improving the fire-retardant rating as claimed in claim 3, wherein the tenon (1.3) is a tongue and the tongue and groove (1.2) is a groove.

5. The metal composite core mold for building cover with built-in hollow floor system for improving fire-retardant rating of claim 3, wherein the tenon (1.3) is a cylinder or a polyhedron, and the mortise (1.2) is a counter bore corresponding to the cylinder or the polyhedron.

6. The built-in metal combined core mould for the hollow floor system for improving the fire-retardant rating as claimed in any one of claims 1 to 5, wherein the core mould shell (1) is formed by mechanically pressing galvanized iron sheets.

7. The built-in metal combined core mold for the hollow floor system for improving the fire-retardant rating according to any one of claims 1 to 5, wherein the core mold shell (1) is a strip-shaped core mold shell (1), and the width of the core mold shell (1) is 2/5 to 9/20 of the length.

8. The built-in metal combination core mold for the hollow floor system for improving the fire-retardant rating according to any one of claims 1 to 5, wherein the convex edge (1.4) of the core mold shell (1) is vertically provided with 8 to 12 through holes (1.5) at intervals.

9. The metal composite core mold for building cover built-in with improved fire rating according to any of claims 1 to 5, wherein the lateral reinforcing ribs (1.1) are reinforcing ribs which are recessed inward in the lateral direction of the core mold housing (1).

10. The built-in metal combination core mould for the hollow floor system for improving the fire-retardant rating as claimed in any one of claims 1 to 5, wherein the cross section of the metal combination core mould is elliptical or circular or polygonal.