CN211774964U

CN211774964U - Improve built-in metal combination mandrel of hollow superstructure of fire prevention grade

Info

Publication number: CN211774964U
Application number: CN202020106672.1U
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: 2020-10-27
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a hollow floor built-in metal combined core mould for improving fire-proof grade, which comprises a core mould shell, a strap and a drill tail screw rod, wherein the core mould shell is formed by mechanically pressing a metal material, the periphery of the bottom of the core mould shell is provided with a convex edge, a clamping device is arranged on the convex edge, vertical through holes are formed in the convex edge, the interval of the upper surface of the core mould shell is provided with transverse reinforcing ribs, the strap is sleeved on the core mould shell and passes through the through holes for fixing through the drill tail screw rod; the clamping device comprises a tenon and a mortise, the tenon is distributed on one half edge of the convex edge, the mortise is distributed on the other half edge of the convex edge, the tenon and the mortise correspond to each other in position, shape, size and length, and the tenon and the mortise are matched with the mortise and the tenon of the other core mold shell for use; the utility model discloses fire prevention level reaches A level, and is difficult for burning to do not have the gaseous production of poison and harm, solved the requirement of hollow floor obturator to the fire prevention well.

Description

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

Technical Field

The utility model relates to a mandrel, more specifically relate to a improve built-in metal combination mandrel of hollow superstructure of fire prevention 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 utility model aims to provide a: 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 utility model adopts the technical scheme as follows: the utility model provides an improve built-in metal combination mandrel of hollow superstructure of fire prevention level, includes mandrel shell, strap and bores the tail screw pole, the mandrel shell is formed through mechanical pressing by metal material, and the border is equipped with protruding edge around the bottom of this mandrel shell, is equipped with the block device on this protruding edge to the interval is opened there is the vertically through-hole, mandrel shell upper surface interval is provided with horizontal reinforcement rib, the strap cover is established on mandrel shell to it is fixed to pass the through-hole through boring the tail screw pole.

The utility model discloses a theory of operation does: the utility model is a core mould shell during production and transportation, which is a core mould shell produced in batch according to the design requirement, and the outer surface of the core mould shell is regularly provided with a plurality of transverse reinforcing ribs, thereby improving the self supporting strength; and set up 1-2 strap parcel toward the mandrel, reinforcing bar drill tail screw pole passes anti floating metal shim and passes the through-hole of mandrel from the preformed hole at strap both ends again and lock the mandrel on the template, be used for fixed mandrel anti floating and displacement, from structural configuration, the mandrel casing is outer expansion loudspeaker, can repeat the stack and place, it is more convenient to make transport, store, and protruding edge one side is the tongue-and-groove, the another side is the tenon, only need the tenon card to go into the tongue-and-groove and accomplish two mandrel casing and assemble during the installation, 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.

Furthermore, the strap is a U-shaped strap, the size of the strap corresponds to the cross section of the core mold shell, and two ends of the strap are provided with reserved holes which correspond to the through holes of the core mold shell; besides the function of reinforcement, the core mold is fixed on the template in a binding shape through the self-drilling screw rod, and the anti-floating procedure is simplified.

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 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 the strap and the drill tail screw rod to resist floating of the core mold, and 4 through holes are used for installing the accessory installation holes connected between two adjacent core molds.

Furthermore, two tail ends of the strap are respectively provided with 1-2 preformed holes, one hole is used for installing a screw rod with a drill tail, and the other hole is used for installing a connecting fitting.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model 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 in the process efficiency, especially saves manpower and auxiliary materials on the anti-floating and displacement of products, is greatly simple and convenient in the construction process, does not need template punching compared with the prior art, does not need to lay reinforcing steel bars, binds iron wires and lays cushion blocks, and the upper and lower working faces of the template need manual processing; the anti-floating device can be implemented on the working surface of the product;

2. the utility model has the advantages that the core mould body is an external expansion horn, the core mould body can be repeatedly overlapped and placed, and the handling, transportation and storage are greatly improved;

3. the utility model is a one-step forming in full-automatic production, the transverse reinforcing ribs are inwards sunken, so that the upper and lower flange reinforcing steel bars can be stabilized, good wrapping force is generated, and the reinforcing steel bars can be more stabilized;

4. the utility model has simple and rapid assembly and high working efficiency, the arc oblique angle of the core mould can well enhance the fluidity of the concrete when pouring, the quality of the concrete is ensured, the transverse reinforcing ribs are stable, the transverse reinforcing ribs can well generate bond force with the upper flange reinforcing bars, the construction is anti-floating, the concrete is saved, the cost is reduced, and the quality of the hollow floor is improved;

5. the strap, the self-drilling screw rod and the anti-floating metal gasket of the utility model can firmly fix the core mold on the template, thereby avoiding the problems of displacement and floating;

6. the utility model adopts a novel anti-floating measure processing method, the anti-floating only needs to be carried out on the working surface of the template, the drill tail screw rod and the anti-floating gasket directly pass through the strap and are fixed on the template, the traditional anti-floating process that punching is needed on the template and the binding of the upper working surface and the lower working surface is carried out by iron wires is broken through;

7. the utility model adopts galvanized iron sheet to be formed by mechanical pressing, the fireproof grade of the galvanized iron sheet can reach A grade, the galvanized iron sheet is not easy to burn when a fire disaster happens, and no toxic gas is generated, thereby well meeting the requirement of the hollow floor filler on fire prevention;

8. the utility model discloses there is the tongue-and-groove on a mandrel promptly, has the tenon again, assembles a mandrel with two mandrel shells through the cooperation of tongue-and-groove and tenon, need not to assemble accessories, has simplified the installation, has also practiced thrift assembly accessories, the cost is reduced.

Drawings

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

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

fig. 2 is a schematic top view of the core mold housing according to the present invention;

fig. 3 is a schematic cross-sectional structure of the core mold shell according to the present invention;

fig. 4 is a schematic view of the structure of the band of the present invention;

FIG. 5 is a schematic top view of the structure of FIG. 4;

labeled as: 1-core mould shell, 1.1-transverse reinforcing ribs, 1.2-mortises, 1.3-tenons, 1.4-convex edges, 1.5-through holes, 2.1-preformed holes, 2-straps and 3-self drilling screw rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all 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.

Example 1

As shown in fig. 1-5, a metal built-in combined core mold for a hollow floor slab for improving fire-proof grade comprises a core mold shell 1, a strap 2 and a tail screw rod 3, wherein the core mold shell 1 is formed by mechanically pressing a metal material, a convex edge 1.4 is arranged on the periphery 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 formed at intervals, transverse reinforcing ribs 1.1 are arranged at intervals on the upper surface of the core mold shell 1, the strap 2 is sleeved on the core mold shell 1 and fixed by the tail screw rod 3 through the through holes 1.5.

The utility model discloses a theory of operation does: the utility model is a core mould shell 1 during production and transportation, and is the core mould shell 1 which is produced in batch according to the design requirement, a plurality of horizontal reinforcing ribs are regularly arranged on the outer surface of the core mould shell 1, so that the self supporting strength is improved; and set up 1-2 strap 2 parcel toward the mandrel, reinforcing bar drill tail screw 3 passes anti floating metal shim and passes the through-hole 1.5 of mandrel from the preformed hole 2.1 at strap 2 both ends again and locks the mandrel on the template, is used for fixed mandrel anti floating and displacement, from structural configuration, mandrel casing 1 is the loudspeaker that expands outward, can repeat the stack and place, it is more convenient to make the transport, store, and protruding along 1.4 one side be tongue-and-groove 1.2, the another side is tenon 1.3, only need during the installation tenon 1.3 card go into in the tongue-and-groove 1.2 and accomplish two mandrel casings 1 and assemble, the equipment is 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 the embodiment 1, the strap 2 is a U-shaped strap 2, the size of the strap corresponds to the cross section of the core mold shell 1, two ends of the strap 2 are provided with reserved holes 2.1, and the reserved holes 2.1 correspond to the through holes 1.5 of the core mold shell 1; besides the function of reinforcement, the core mold is fixed on the template in a binding shape through the self-drilling screw rod 3, and the anti-floating process is simplified.

Example 5

On the basis of embodiment 1, the lateral reinforcing ribs 1.1 are reinforcing ribs recessed inward in the lateral 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 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, has a stable integral structure and uniform shape and specification, and the fireproof grade of the galvanized iron sheets can reach A level.

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 arranged on the convex edge 1.4 of the core mould shell 1 at vertical intervals, 4 through holes 1.5 are used for installing the strap 2 and the self-drilling screw rod 3 to resist the core mould to float, and 4 through holes 1.5 are used for installing the fittings connected between two adjacent core moulds.

Example 9

On the basis of any one of embodiments 1 to 5, the two ends of the strap 2 are respectively provided with 1 to 2 prepared holes 2.1, one hole is used for installing the self-drilling screw rod 3, and the other hole is used for installing a connecting fitting.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an improve built-in metal combination mandrel of hollow superstructure of fire prevention level, includes mandrel casing (1), strap (2) and bores tail screw pole (3), its characterized in that, mandrel casing (1) is formed through mechanical pressing by metal material, and the bottom of this mandrel casing (1) is along being equipped with protruding edge (1.4) all around, 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), strap (2) cover is established on mandrel casing (1) to it is fixed through boring tail screw pole (3) through-hole (1.5).

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 built-in metal combined core mould for the hollow floor system capable of improving the fire-retardant rating as claimed in claim 1, wherein the clamping device 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) correspond to each other, 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 metal built-in core mold for building cover with improved fire-proof rating as claimed in claim 1, wherein the band (2) is a U-shaped band (2) with a size corresponding to the cross section of the core mold housing (1), the band (2) has a preformed hole (2.1) at both ends, and the preformed hole (2.1) corresponds to the through hole (1.5) of the core mold housing (1).

5. The metal built-in core mold for a fire-rated hollow floor according to claim 1, wherein the lateral reinforcing ribs (1.1) are reinforcing ribs which are recessed inward in the lateral direction of the core mold housing (1).

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 built-in metal combination core mould for the hollow floor system for improving the fire-retardant rating according to any one of claims 1 to 5, wherein 1 to 2 preformed holes (2.1) are respectively formed at the two ends of the strap (2).