CN104942977A - Core pulling pipe of prefabricated member and manufacturing method of prefabricated member - Google Patents
Core pulling pipe of prefabricated member and manufacturing method of prefabricated member Download PDFInfo
- Publication number
- CN104942977A CN104942977A CN201510373018.0A CN201510373018A CN104942977A CN 104942977 A CN104942977 A CN 104942977A CN 201510373018 A CN201510373018 A CN 201510373018A CN 104942977 A CN104942977 A CN 104942977A
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- CN
- China
- Prior art keywords
- core pipe
- drawing core
- sub
- prefabricated component
- concrete
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
- B28B7/186—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for plates, panels or similar sheet- or disc-shaped objects, also flat oblong moulded articles with lateral openings, e.g. panels with openings for doors or windows, grated girders
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention provides a core pulling pipe of a prefabricated member. The core pulling pipe of the prefabricated member is used for manufacturing hollow slabs and composed of multiple independent secondary core pulling pipes, the secondary core pulling pipes are made of steel pipes, and at least one outer side wall of each secondary core pulling pipe is provided with elastomer. Due to the fact that at least one outer side wall of each secondary core pulling pipe is provided with the elastomer which has a good shielding effect in the concrete casting process, it is avoided that cast-in-place concrete is cast into an inner cavity of the hollow concrete member; due to the fact that the elastomer can release rapping gaps in the core pulling process, the core pulling difficulty is greatly lowered; in addition, due to the fact that even though core pulling is performed before the concrete is completely solidified, the situation that when the concrete adheres to the core pulling pipe, the concrete member is damaged will not occur, the overall quality of the concrete member is fully guaranteed. The invention further provides a manufacturing method of the prefabricated member.
Description
Technical field
The present invention relates to construction engineering technical field, particularly the preparation method of a kind of prefabricated component drawing core pipe and prefabricated component.
Background technology
Concrete hollow prefabricated component is widely used in precast floor slab, prefabricated panel, prefab-form in building.The classical production process of concrete hollow prefabricated component adopts formwork erection to build manufacture in groups, main technique is: before concreting, puts into the drawing core pipe of multiple elongated cylindrical, then casting concrete in formwork erection, after concrete final set, from formwork erection, extract drawing core pipe, form the hollow of prefabricated component.This loose core manufacture method due to the distance between drawing core pipe and formwork erection less, if the aggregate size in concrete aggregate will be caused more greatly to be stuck in formwork erection and upper strata drawing core pipe space on and cannot fall, thus make concrete occur segregation.And there is surperficial viscous force in the surface to connect with precast concrete due to drawing core pipe, when prefabricated component is loosed core, easily causes concrete subsiding, particularly to the making of large cored slab, be very easy to subside in process of loosing core, may realize hardly.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of prefabricated component drawing core pipe, it is when loosing core, and can avoid concrete problem of subsiding, loose core effective.
Second technical problem that the present invention will solve is: the preparation method providing a kind of prefabricated component, and it is simple to operate, when loosing core, can avoid concrete problem of subsiding, loosing core effective.
Solution of the present invention is achieved in that a kind of prefabricated component drawing core pipe, for making cored slab, wherein, described prefabricated component drawing core pipe is made up of some independently sub-drawing core pipes, described sub-drawing core pipe is made up of steel pipe, and at least one lateral wall of described sub-drawing core pipe is provided with elastomer.So, by arranging prefabricated component drawing core pipe in a mold, thus make mould can produce core-drawing pore-creating concrete component, and described prefabricated component drawing core pipe comprises some independently sub-drawing core pipes, sub-drawing core pipe is made up of steel pipe, at least one lateral wall of described sub-drawing core pipe is provided with elastomer, elastomer is formed and good blocks effect in concrete placement, prevent cast-in-place concrete from pouring into hollow concrete member inner chamber, fully ensure that the complete Sum fanction of hollow concrete member internal cavities, and in the process of loosing core, elastomer can discharge rapping space, the difficulty that makes to loose core significantly is reduced, and, even if loose core when concrete solidifies not yet completely, also can not adhere to because of concrete damage drawing core pipe causing concrete component, fully ensure that the total quality of concrete component.Compared to existing technology, adopt the hollow prefabricated member made by drawing core pipe of the present invention, its hollow rate is higher, more saves construction material, can make the various hollow prefabricated members of large hollow rate.
Another technical scheme of the present invention is on above-mentioned basis, and at least one end of described sub-drawing core pipe is provided with core-pulling mechanism.So, in knockout course, the core-pulling mechanism arranged by antithetical phrase drawing core pipe end is applied pulling force and can be extracted out by sub-drawing core pipe easily.
Another technical scheme of the present invention is on above-mentioned basis, and described core-pulling mechanism is draw ring or pull bar or arm-tie or motor of loosing core.So, in knockout course, the core-pulling mechanism arranged by antithetical phrase drawing core pipe end is applied pulling force and can be extracted out by sub-drawing core pipe easily, as adopted motor of loosing core, then significantly can reduce labour intensity, and the sub-drawing core pipe amplitude of fluctuation of operation of loosing core is few, can reduce the damage of loosing core of concrete component.
Another technical scheme of the present invention is on above-mentioned basis, and at least side of described sub-drawing core pipe is provided with fixed mechanism, is connected and fixed between described adjacent sub-drawing core pipe by described fixed mechanism.So, by the effect of fixed mechanism, multiple sub-drawing core pipe being combined to form overall prefabricated component drawing core pipe, when loosing core, then can extracting single sub-drawing core pipe out can complete concrete component pore-forming again by opening fixed mechanism.
Another technical scheme of the present invention is on above-mentioned basis, and described fixed mechanism is chute or bayonet socket.So, when fixed mechanism be chute or bayonet socket time, fixed mechanism structure is simple, stable and reliable for performance, and, can also, according to the length of hole of loosing core, optionally adopt disposable chute or bayonet socket to be arranged at end or the middle part of prefabricated component drawing core pipe, good constraint can be formed by antithetical phrase drawing core pipe, prevent its distortion and cause concrete component internal core-pulling irregular.
Another technical scheme of the present invention is on above-mentioned basis, and the cross sectional shape of described sub-drawing core pipe is square, rectangle, circle, ellipse or semicircle.So, at the hole of the inner corresponding formation aforementioned shapes of concrete component, the various form needs of concrete component can fully be met.
Another technical scheme of the present invention is on above-mentioned basis, and the sub-drawing core pipe at some intervals forms sub-drawing core pipe group.So, spaced sub-drawing core pipe reduces the deadweight of prefabricated component drawing core pipe, and sub-drawing core pipe is easily extracted out.
Another technical scheme of the present invention is on above-mentioned basis, and at least one end of described sub-drawing core pipe group is provided with core-pulling mechanism.So, in knockout course, the core-pulling mechanism arranged by antithetical phrase drawing core pipe end is applied pulling force and can be extracted out by sub-drawing core pipe easily.
Another technical scheme of the present invention is on above-mentioned basis, and described elastomer is rubber or elastic foam or elastoplast.So, elastomeric material wide material sources, low price and good sealing effect, be conducive to reducing costs.
Another technical scheme of the present invention is on above-mentioned basis, and described elastomer is arranged on the relative face of adjacent sub-drawing core pipe.So, between adjacent sub-drawing core pipe, all there is compression stroke, can fully ensure deviating from smoothly of core pipe.
For solving second technical problem, another technical scheme of the present invention is, on above-mentioned basis, to provide a kind of preparation method of prefabricated component, comprise the following steps:
Step 1: prepare above-mentioned prefabricated component drawing core pipe;
Step 2: prefabricated component drawing core pipe is placed into prefabricated component and makes in mould and to locate;
Step 3: concreting is made in mould in prefabricated component, carries out loosing core and the demoulding after concrete curing is shaping.So, according to above-mentioned steps, by arranging core-pulling device in a mold, thus make mould can produce core-drawing pore-creating concrete component, and described prefabricated component drawing core pipe comprises some independently sub-drawing core pipes, sub-drawing core pipe is made up of steel pipe, at least one lateral wall of described sub-drawing core pipe is provided with elastomer, elastomer is formed and good blocks effect in concrete placement, prevent cast-in-place concrete from pouring into hollow concrete member inner chamber, fully ensure that the complete Sum fanction of hollow concrete member internal cavities, and in the process of loosing core, elastomer can discharge rapping space, the difficulty that makes to loose core significantly is reduced, and, even if loose core when concrete solidifies not yet completely, also can not adhere to because of concrete damage drawing core pipe causing concrete component, fully ensure that the total quality of concrete component.
Another technical scheme of the present invention is that, on above-mentioned basis, step of loosing core in described step 3 is specially, and is first first extracted out by non-conterminous sub-drawing core pipe, and then is extracted out by remaining sub-drawing core pipe.So, by first non-conterminous sub-drawing core pipe first being extracted out, drawing core pipe Pressure Drop in concrete component is got off, and then one by one sub-drawing core pipe is extracted out, the demoulding before the incomplete setting and hardening of concrete component is made to become possibility, and, because it adopts combining structure as the combination form of prefabricated component drawing core pipe, also can deviate from smoothly after concrete component hardens completely.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
The structural representation of the prefabricated component drawing core pipe of Fig. 1 involved by a kind of embodiment of this technology;
Fig. 2 is the schematic cross-section of prefabricated component drawing core pipe in Fig. 1.
In figure:
61 sub-drawing core pipe 62 core-pulling mechanism 63 elastomers
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.In addition, those skilled in the art, according to the description of presents, can carry out respective combination to the feature in embodiment in presents and in different embodiment.
The embodiment of the present invention is as follows, refer to Fig. 1 and Fig. 2, a kind of prefabricated component drawing core pipe, for making cored slab, wherein, described prefabricated component drawing core pipe is made up of some independently sub-drawing core pipes, and described sub-drawing core pipe 61 is made up of steel pipe, and at least one lateral wall of described sub-drawing core pipe 61 is provided with elastomer 63.So, by arranging prefabricated component drawing core pipe in a mold, thus make mould can produce core-drawing pore-creating concrete component, and described prefabricated component drawing core pipe comprises some independently sub-drawing core pipes 61, sub-drawing core pipe 61 is made up of steel pipe, at least one lateral wall of described sub-drawing core pipe 61 is provided with elastomer 63, elastomer 63 is formed and good blocks effect in concrete placement, prevent cast-in-place concrete from pouring into hollow concrete member inner chamber, fully ensure that the complete Sum fanction of hollow concrete member internal cavities, and in the process of loosing core, elastomer 63 can discharge rapping space, the difficulty that makes to loose core significantly is reduced, and, even if loose core when concrete solidifies not yet completely, also can not adhere to because of concrete damage drawing core pipe causing concrete component, fully ensure that the total quality of concrete component.Compared to existing technology, adopt the hollow prefabricated member made by drawing core pipe of the present invention, its hollow rate is higher, more saves construction material, can make the various hollow prefabricated members of large hollow rate.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 1, at least one end of described sub-drawing core pipe 61 can be provided with core-pulling mechanism 62.So, in knockout course, the core-pulling mechanism 62 arranged by antithetical phrase drawing core pipe 61 end is applied pulling force and can be extracted out by sub-drawing core pipe 61 easily.
On the basis of above-described embodiment, in another embodiment of the present invention, described core-pulling mechanism 62 can be draw ring or pull bar or arm-tie or motor of loosing core.So, in knockout course, the core-pulling mechanism 62 arranged by antithetical phrase drawing core pipe 61 end is applied pulling force and can be extracted out by sub-drawing core pipe 61 easily, as adopted motor of loosing core, then significantly can reduce labour intensity, and operation of loosing core sub-drawing core pipe 61 amplitude of fluctuation is few, can reduce the damage of loosing core of concrete component.
On the basis of above-described embodiment, in another embodiment of the present invention, at least side of described sub-drawing core pipe 61 is provided with fixed mechanism, is connected and fixed between described adjacent sub-drawing core pipe 61 by described fixed mechanism.So, by the effect of fixed mechanism, multiple sub-drawing core pipe being combined to form overall prefabricated component drawing core pipe, when loosing core, then can extracting single sub-drawing core pipe 61 out can complete concrete component pore-forming again by opening fixed mechanism.
On the basis of above-described embodiment, in another embodiment of the present invention, described fixed mechanism is chute or bayonet socket.So, when fixed mechanism be chute or bayonet socket time, fixed mechanism structure is simple, stable and reliable for performance, and, can also, according to the length of hole of loosing core, optionally adopt disposable chute or bayonet socket to be arranged at end or the middle part of prefabricated component drawing core pipe, good constraint can be formed by antithetical phrase drawing core pipe 61, prevent its distortion and cause concrete component internal core-pulling irregular.
On the basis of above-described embodiment, in another embodiment of the present invention, the cross sectional shape of described sub-drawing core pipe 61 is square, rectangle, circle, ellipse or semicircle.So, at the hole of the inner corresponding formation aforementioned shapes of concrete component, the various form needs of concrete component can fully be met.
On the basis of above-described embodiment, in another embodiment of the present invention, the sub-drawing core pipe at some intervals forms sub-drawing core pipe group.So, spaced sub-drawing core pipe 61 reduces the deadweight of prefabricated component drawing core pipe, and sub-drawing core pipe 61 is easily extracted out.In addition, non-conterminous sub-drawing core pipe 61 is first extracted out by process of loosing core, then extracting remaining sub-drawing core pipe 61 out, to solve viscous force problems of too in the process of loosing core.Reduce the pulling force of loosing core and needing, promote the stability of process of loosing core simultaneously.
On the basis of above-described embodiment, in another embodiment of the present invention, at least one end of described sub-drawing core pipe group is provided with core-pulling mechanism 62.So, in knockout course, the core-pulling mechanism 62 arranged by antithetical phrase drawing core pipe 61 end is applied pulling force and can be extracted out by sub-drawing core pipe 61 easily.
On the basis of above-described embodiment, in another embodiment of the present invention, described elastomer 63 is rubber or elastic foam or elastoplast.So, elastomer 63 material source is extensive, low price and good sealing effect, is conducive to reducing costs.
On the basis of above-described embodiment, in another embodiment of the present invention, as depicted in figs. 1 and 2, described elastomer 63 is arranged on the relative face of adjacent sub-drawing core pipe 61.Sub-drawing core pipe 61 need face being arranged on two ends is like this provided with elastomer 63, and being arranged on middle sub-drawing core pipe 61 then needs to be provided with elastomer 63 on two opposite faces.So, all there is compression stroke between adjacent sub-drawing core pipe 61, can fully ensure deviating from smoothly of core pipe.
On the basis of above-described embodiment, in another embodiment of the present invention, a kind of preparation method of prefabricated component, comprises the following steps:
Step 1: prepare above-mentioned prefabricated component drawing core pipe;
Step 2: prefabricated component drawing core pipe is placed into prefabricated component and makes in mould and to locate;
Step 3: concreting is made in mould in prefabricated component, carries out loosing core and the demoulding after concrete curing is shaping.So, according to above-mentioned steps, by arranging core-pulling device in a mold, thus make mould can produce core-drawing pore-creating concrete component, and described prefabricated component drawing core pipe comprises some independently sub-drawing core pipes 61, sub-drawing core pipe 61 is made up of steel pipe, at least one lateral wall of described sub-drawing core pipe 61 is provided with elastomer 63, elastomer 63 is formed and good blocks effect in concrete placement, prevent cast-in-place concrete from pouring into hollow concrete member inner chamber, fully ensure that the complete Sum fanction of hollow concrete member internal cavities, and in the process of loosing core, elastomer 63 can discharge rapping space, the difficulty that makes to loose core significantly is reduced, and, even if loose core when concrete solidifies not yet completely, also can not adhere to because of concrete damage drawing core pipe causing concrete component, fully ensure that the total quality of concrete component.
On the basis of above-described embodiment, in another embodiment of the present invention, step of loosing core in described step 3 is specially, and is first first extracted out by non-conterminous sub-drawing core pipe 61, and then is extracted out by remaining sub-drawing core pipe 61.So, by first non-conterminous sub-drawing core pipe 61 first being extracted out, drawing core pipe Pressure Drop in concrete component is got off, and then one by one sub-drawing core pipe 61 is extracted out, the demoulding before the incomplete setting and hardening of concrete component is made to become possibility, and, because it adopts combining structure as the combination form of prefabricated component drawing core pipe, also can deviate from smoothly after concrete component hardens completely.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a prefabricated component drawing core pipe, for making cored slab, is characterized in that: described prefabricated component drawing core pipe is made up of some independently sub-drawing core pipes, and described sub-drawing core pipe is made up of steel pipe, and at least one lateral wall of described sub-drawing core pipe is provided with elastomer.
2. prefabricated component drawing core pipe according to claim 1, is characterized in that, at least one end of described sub-drawing core pipe is provided with core-pulling mechanism.
3. prefabricated component drawing core pipe according to claim 1, is characterized in that, described core-pulling mechanism is draw ring or pull bar or arm-tie or motor of loosing core.
4. prefabricated component drawing core pipe according to claim 1, is characterized in that, at least side of described sub-drawing core pipe is provided with fixed mechanism, is connected and fixed between described adjacent sub-drawing core pipe by described fixed mechanism.
5. prefabricated component drawing core pipe according to claim 4, is characterized in that, described fixed mechanism is chute or bayonet socket.
6. prefabricated component drawing core pipe according to claim 1, is characterized in that, the cross sectional shape of described sub-drawing core pipe is square, rectangle, circle, ellipse or semicircle.
7. prefabricated component drawing core pipe according to any one of claim 1 to 6, is characterized in that, the sub-drawing core pipe at some intervals forms sub-drawing core pipe group; Or at least one end of described sub-drawing core pipe group is provided with core-pulling mechanism.
8. prefabricated component drawing core pipe according to any one of claim 1 to 6, is characterized in that, described elastomer is rubber or elastic foam or elastoplast; Or described elastomer is arranged on the relative face of adjacent sub-drawing core pipe.
9. a preparation method for prefabricated component, is characterized in that, comprises the following steps:
Step 1: prepare the prefabricated component drawing core pipe according to any one of claim 1 to 8;
Step 2: prefabricated component drawing core pipe is placed into prefabricated component and makes in mould and to locate;
Step 3: concreting is made in mould in prefabricated component, carries out loosing core and the demoulding after concrete curing is shaping.
10. the preparation method of prefabricated component according to claim 9, is characterized in that, step of loosing core in described step 3 is specially, and is first first extracted out by non-conterminous sub-drawing core pipe, and then is extracted out by remaining sub-drawing core pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373018.0A CN104942977A (en) | 2015-06-29 | 2015-06-29 | Core pulling pipe of prefabricated member and manufacturing method of prefabricated member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510373018.0A CN104942977A (en) | 2015-06-29 | 2015-06-29 | Core pulling pipe of prefabricated member and manufacturing method of prefabricated member |
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| Publication Number | Publication Date |
|---|---|
| CN104942977A true CN104942977A (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510373018.0A Pending CN104942977A (en) | 2015-06-29 | 2015-06-29 | Core pulling pipe of prefabricated member and manufacturing method of prefabricated member |
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| CN (1) | CN104942977A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887617A (en) * | 2016-04-27 | 2016-08-24 | 四川中邦模具有限公司 | Hollow road edge stone integrating water collection, water drainage and water seepage and pouring mold |
| CN111648520A (en) * | 2020-06-12 | 2020-09-11 | 建华建材(吉林)有限公司 | Prefabricated part and method for producing hollow concrete prefabricated unit by using same |
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| GB554336A (en) * | 1941-09-19 | 1943-06-29 | Charles Bernard Mathews | Improvements in the method of and means for making hollow concrete units |
| CN2078221U (en) * | 1990-02-15 | 1991-06-05 | 薛运河 | Mould for hollow plate and pipe materials cast with composite paste |
| CN2395867Y (en) * | 1999-10-11 | 2000-09-13 | 万程 | Mandrel for producing hole cencrete structural member |
| CN2853349Y (en) * | 2005-11-21 | 2007-01-03 | 兰州理工大学 | Reducing wallboard block core draw-out mechanism |
| CN201520002U (en) * | 2009-03-23 | 2010-07-07 | 于永久 | Mould for molding open building member |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB554336A (en) * | 1941-09-19 | 1943-06-29 | Charles Bernard Mathews | Improvements in the method of and means for making hollow concrete units |
| CN2078221U (en) * | 1990-02-15 | 1991-06-05 | 薛运河 | Mould for hollow plate and pipe materials cast with composite paste |
| CN2395867Y (en) * | 1999-10-11 | 2000-09-13 | 万程 | Mandrel for producing hole cencrete structural member |
| CN2853349Y (en) * | 2005-11-21 | 2007-01-03 | 兰州理工大学 | Reducing wallboard block core draw-out mechanism |
| CN201520002U (en) * | 2009-03-23 | 2010-07-07 | 于永久 | Mould for molding open building member |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887617A (en) * | 2016-04-27 | 2016-08-24 | 四川中邦模具有限公司 | Hollow road edge stone integrating water collection, water drainage and water seepage and pouring mold |
| CN105887617B (en) * | 2016-04-27 | 2019-03-22 | 四川中邦模具有限公司 | It is a kind of to have both the hollow curbstone catchment, drain, seeping water and pour mold |
| CN111648520A (en) * | 2020-06-12 | 2020-09-11 | 建华建材(吉林)有限公司 | Prefabricated part and method for producing hollow concrete prefabricated unit by using same |
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Application publication date: 20150930 |