CN114131751B - Corner protection device for prefabricated slab posture conversion and construction method thereof - Google Patents
Corner protection device for prefabricated slab posture conversion and construction method thereof Download PDFInfo
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- CN114131751B CN114131751B CN202111536127.1A CN202111536127A CN114131751B CN 114131751 B CN114131751 B CN 114131751B CN 202111536127 A CN202111536127 A CN 202111536127A CN 114131751 B CN114131751 B CN 114131751B
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- steel plate
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- concrete
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- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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- 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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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- 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
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
- B28B7/0032—Moulding tables or similar mainly horizontal moulding surfaces
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a corner protection device during precast slab posture conversion and a construction method thereof. The concrete plate lifting device has a protection effect when the posture of a concrete precast plate is converted and lifted in a precast plant, a protection pad is formed between a concrete plate and the device through the first rubber plate and the second rubber plate, meanwhile, the device can provide a rotating shaft for the concrete plate in the plate lifting process, the edge of the concrete plate is prevented from being in rigid contact with a concrete precast pedestal, the collision phenomenon is avoided, the structural corners are effectively protected in the concrete plate overturning and moving processes, the integrity of components is ensured, and the construction quality is improved.
Description
Technical Field
The invention relates to the field of prefabrication construction of large concrete slab structures in water transport engineering, in particular to a corner protection device during prefabricated slab posture conversion and a construction method thereof.
Background
The concrete slab structure is convenient to prefabricate and construct, has been widely applied in the assembly type building construction process, is industrially constructed and assembled on site, can effectively improve the construction efficiency, reduces the project investment for the construction with limited site, ensures the construction progress and the construction quality, and is widely applied to roads and civil buildings. Along with the continuous development of the building industry, the application of the assembly type structure in the water transport engineering is also continuously increased, the assembly construction of structures such as caissons, wharfs, breast walls and the like is more and more, different from the assembly construction of civil buildings, the assembly type components in the water transport engineering are often relatively large, particularly concrete plate structures, after horizontal prefabrication is completed, the posture is sometimes required to be converted into a vertical state, then assembly construction is carried out, and in the posture conversion process, the corners are easily damaged due to centralized stress or collision influence, so that certain influence is caused on the construction quality.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a corner protection device during the posture conversion of a prefabricated slab and a construction method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a corner protection device during prefabricated plate gesture conversion, including first steel sheet, second steel sheet and rotation axis, first steel sheet one side is connected with the rotation axis, one side and second steel sheet sliding connection that first steel sheet is close to the rotation axis, the second steel sheet is perpendicular with first steel sheet, and the second steel sheet slides along the direction of height of first steel sheet, first steel sheet upper surface is provided with first rubber slab, the surface that the rotation axis one side was kept away from to the second steel sheet is provided with the second rubber slab, the rotation axis tip rotates and connects on the prefabrication pedestal, and leave on the prefabrication pedestal and put the thing recess, the second steel sheet slides from top to bottom in putting the thing recess, and can accomodate in putting the thing recess, install vertical electronic jar in putting the thing recess, electronic jar flexible end even has the support groove that is used for supporting the second steel sheet, even has a plurality of locating pieces on the first steel sheet top surface, be equipped with the locating hole on the second steel sheet, be equipped with locating hole assorted screw hole on the second steel sheet, when the second steel sheet slides to the highest position along the direction roll-off of first steel sheet, screw hole aligns with the locating bolt in the opposite alignment, install fixing bolt in the screw hole and the locating hole.
The first steel plate and the first rubber plate are bonded or bolted into a whole, and the second steel plate and the second rubber plate are bonded or bolted into a whole.
Limiting plates are arranged on two sides of the lower end of the second steel plate, so that the second steel plate is prevented from completely sliding out along the height direction of the first steel plate.
When first steel sheet was kept flat, first rubber slab top elevation was unanimous with prefabricated pedestal top elevation, and first steel sheet, first rubber slab and prefabricated pedestal regard as the prefabricated die block board of concrete slab structure jointly.
The second steel plate is provided with a plurality of separating grooves, the separating grooves separate the second steel plate into a plurality of inserting blocks, and the first steel plate is provided with sliding holes matched with the inserting blocks.
The two sides of the sliding hole in the bottom of the first steel plate are respectively connected with a magnet plate, the limiting plate is an iron plate, and the top of the supporting groove is provided with an electromagnet for attracting the limiting plate.
The construction method of the corner protection device during the posture conversion of the precast slab comprises the following steps:
a, preparing a concrete slab before prefabrication: before the concrete slab prefabrication construction, a first steel plate is arranged at a position attached to a prefabrication pedestal, the first steel plate, a first rubber plate and the prefabrication pedestal are used as a bottom template for prefabrication of the concrete slab together, then a second steel plate is slid into an object placing groove, the influence of the second steel plate on installation and positioning of a concrete slab side template is avoided, the gap between the first steel plate and the prefabrication pedestal is small, and in order to increase the smoothness of the bottom template, a rubber strip can be filled in the gap between the first steel plate and the prefabrication pedestal;
b, prefabricating concrete plates: cleaning, polishing and oiling a bottom template, binding steel bars, arranging pre-embedded lifting lugs, supporting a side template, pouring concrete, and removing the side template after the concrete reaches the required strength;
c, preparation before hoisting: after the side template is removed, the electric cylinder jacks up the second steel plate, the second steel plate slides out, and the position of the second steel plate is fixed by a fixing bolt, so that the second rubber plate on the second steel plate and the first rubber plate on the first steel plate are respectively attached to the side edge and the bottom edge of the same ridge;
d, overturning the concrete slab: c, vertically and slowly pulling and lifting one side of the concrete slab through the embedded lifting lugs in the step c by using a crane, wherein the first steel plate and the second steel plate rotate around a rotating shaft together without displacement, and when the concrete slab is converted from a horizontal position to a vertical position, the posture conversion of the concrete slab is completed;
e, concrete slab relocation: continuously lifting the concrete slab to separate the concrete slab from the second rubber slab and the first rubber slab, and transporting the concrete slab to a storage area or an installation position;
f, homing of the protection device: after the concrete slab is lifted away, the protection device is turned over reversely, so that the first steel plate is restored to the position attached to the prefabricating pedestal, and the second steel plate slides into the object placing groove to prepare for the prefabricating construction of the follow-up concrete slab.
The invention has the beneficial effects that: the invention plays a role in protecting the precast concrete plate during posture conversion lifting in a prefabrication factory, and the first rubber plate and the second rubber plate form a protective pad between the concrete plate and the invention.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a positional relationship diagram of a first steel plate and a second steel plate;
FIG. 4 is a schematic representation of the construction of a concrete slab in a horizontal position;
fig. 5 is a schematic view of the construction with the concrete slab in an inclined state;
FIG. 6 is an enlarged view of B in FIG. 5;
FIG. 7 is a schematic structural view of a second steel plate;
FIG. 8 is a schematic structural view of a first steel plate;
in the figure: 1-a first steel plate; 2-a second steel plate; 3-a rotating shaft; 4-a first rubber sheet; 5-a second rubber plate; 6-placing the article in the groove; 7-an electric cylinder; 8-bracket; 9-positioning blocks; 10-positioning holes; 11-a threaded hole; 12-a fixing bolt; 13-a limiting plate; 14-a separation tank; 15-a slide hole; 16-a magnet plate; 17-an electromagnet; 18-a lifting lug; 19-rubber strip;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 8, a corner protection device for use in attitude conversion of a prefabricated slab comprises a first steel plate 1, a second steel plate 2 and a rotating shaft 3, one side of the first steel plate 1 is connected with the rotating shaft 3, one side of the first steel plate 1 close to the rotating shaft 3 is connected with the second steel plate 2 in a sliding manner, the second steel plate 2 is perpendicular to the first steel plate 1, the second steel plate 2 slides along the height direction of the first steel plate 1, a first rubber plate 4 is arranged on the upper surface of the first steel plate 1, when the first steel plate 1 is horizontally placed, the top elevation of the first rubber plate 4 is consistent with the top elevation of a prefabricated pedestal, and the first steel plate 1, the first rubber plate 4 and the prefabricated pedestal are jointly used as a prefabricated bottom formwork of a concrete slab structure. The surface of the second steel plate 2 far away from the rotating shaft 3 is provided with a second rubber plate 5, the first steel plate 1 and the first rubber plate 4 are bonded or bolted into a whole, and the second steel plate 2 and the second rubber plate 5 are bonded or bolted into a whole.
3 end of rotation axis rotates to be connected on prefabricated pedestal, and leave on prefabricated pedestal and put thing recess 6, second steel sheet 2 slides from top to bottom in putting thing recess 6, and can accomodate in putting thing recess 6, install vertical electronic jar 7 in putting thing recess 6, electronic jar 7's flexible end even has the support groove 8 that is used for supporting second steel sheet 2, 1 top surface of first steel sheet even has a plurality of locating pieces 9, be equipped with locating hole 10 on the locating piece 9, be equipped with on the second steel sheet 2 with locating hole 10 assorted screw hole 11, when second steel sheet 2 along the direction of height roll-off of first steel sheet 1 to the highest position, screw hole 11 aligns with locating hole 10, install fixing bolt 12 in aligned screw hole 11 and the locating hole 10, fixing bolt 12 links together first steel sheet 1 and second steel sheet 2, 2 lower extreme both sides of second steel sheet are equipped with limiting plate 13, prevent that second steel sheet 2 from along the direction of height complete roll-off of first steel sheet 1.
In the concrete slab prefabricating process, the second steel plate 2 is in a sliding state, namely the second steel plate 2 is positioned in the storage groove 6, so that prefabrication construction is not influenced; lifting lugs are embedded in the other side of the concrete slab; when the precast slab needs to be erected, the precast slab slides out of the second steel plate 2, namely the electric cylinder 7 drives the bracket 8 to move upwards, and the middle upper part of the second steel plate 2 is pushed out from the article placing groove 6, so that the second rubber plate 5 is tightly connected with the side surface of the concrete slab; the lifting lugs are hung through equipment, so that the concrete slab rotates to the vertical position around the rotating shaft 3 together with the protection device, the concrete slab is turned over, and then the concrete slab is hung to the designated position.
The second steel plate 2 is provided with a plurality of separating grooves 14, the separating grooves 14 divide the second steel plate 2 into a plurality of inserting blocks, and the first steel plate 1 is provided with sliding holes 15 matched with the inserting blocks.
1 bottom slide opening 15's of first steel sheet both sides respectively even have a magnet board 16, limiting plate 13 is iron plate, hold in the palm 8 tops and install the electro-magnet 17 that is used for actuation limiting plate 13, when electronic jar 7 is released second steel sheet 2, electro-magnet 17 is uncharged, limiting plate 13 and electro-magnet 17 actuation, increase the stability that first steel sheet 1 and second steel sheet 2 link together, when second steel sheet 2 need move down to put in the recess 6, electro-magnet 17 circular telegram, electro-magnet 17's magnetic force is greater than the magnetic force between limiting plate 13 and the electro-magnet 17, second steel sheet 2 and the separation of first steel sheet 1, second steel sheet 2 enters into and puts in the recess 6.
The construction method of the corner protection device during the attitude conversion of the precast slab comprises the following steps:
a, preparing a concrete slab before prefabrication: before the concrete slab prefabrication construction, a first steel plate 1 is placed at a position attached to a prefabrication pedestal, the first steel plate 1, a first rubber plate 4 and the prefabrication pedestal are used as a bottom template for prefabrication of the concrete slab together, then a second steel plate 2 is slid into a storage groove 6, the influence of the second steel plate on installation and positioning of a side template of the concrete slab is avoided, the gap between the first steel plate 1 and the prefabrication pedestal is small, and in order to increase the smoothness of the bottom template, a rubber strip 19 can be filled in the gap between the first steel plate 1 and the prefabrication pedestal;
b, prefabricating a concrete slab: cleaning, polishing and oiling a bottom template, binding reinforcing steel bars, arranging pre-embedded lifting lugs 18, supporting side templates, pouring concrete, and removing the side templates after the concrete reaches the required strength;
c, preparation before hoisting: after the side templates are removed, the electric cylinder 7 jacks up the second steel plate 2, slides out the second steel plate 2, and fixes the position of the second steel plate by using the fixing bolt 12, so that the second rubber plate 5 on the second steel plate 2 and the first rubber plate 4 on the first steel plate 1 are respectively attached to the side edge and the bottom edge of the same ridge;
d, overturning the concrete slab: c, vertically and slowly pulling and hoisting one side of the concrete slab by using a crane through the pre-buried lifting lugs in the step c, enabling the first steel plate 1 and the second steel plate 2 to rotate around the rotating shaft 3 together without displacement, and completing posture conversion of the concrete slab when the concrete slab is converted from a horizontal position to a vertical position so as to avoid the corner from being damaged due to local stress or collision;
e, concrete slab relocation: continuously lifting the concrete slab to separate the concrete slab from the second rubber slab 5 and the first rubber slab 4, and transporting the concrete slab to a storage area or an installation position;
f, homing of the protection device: after the concrete slab is lifted away, the protection device is turned over reversely, so that the first steel plate 1 is restored to the position attached to the prefabricating pedestal, and the second steel plate 2 slides into the storage groove 6 to prepare for the prefabricating construction of the follow-up concrete slab.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (7)
1. A corner protection device during precast slab posture conversion is characterized by comprising a first steel plate (1), a second steel plate (2) and a rotating shaft (3), one side of the first steel plate (1) is connected with the rotating shaft (3), one side of the first steel plate (1) close to the rotating shaft (3) is in sliding connection with the second steel plate (2), the second steel plate (2) is perpendicular to the first steel plate (1), the second steel plate (2) slides along the height direction of the first steel plate (1), a first rubber plate (4) is arranged on the upper surface of the first steel plate (1), a second rubber plate (5) is arranged on the surface of one side of the second steel plate (2) far away from the rotating shaft (3), the end of the rotating shaft (3) is rotatably connected onto a precast pedestal, a storage groove (6) is reserved on the precast pedestal, the second steel plate (2) slides up and down in the storage groove (6) and can be stored in the storage groove (6), a vertical electric cylinder (7) is arranged in the storage groove (6), the end of the electric cylinder (7) is connected with a plurality of telescopic steel plates (9) for supporting a positioning hole (10) for supporting the second steel plate (2), and a plurality of positioning block (10) is arranged on the top surface of the steel plate (1), when the second steel plate (2) slides out to the highest position along the height direction of the first steel plate (1), the threaded hole (11) is aligned with the positioning hole (10), and the fixing bolt (12) is installed in the aligned threaded hole (11) and the positioning hole (10).
2. A corner protector when converting the attitudes of prefabricated panels according to claim 1, wherein the first steel plate (1) and the first rubber plate (4) are bonded or bolted to form a single body, and the second steel plate (2) and the second rubber plate (5) are bonded or bolted to form a single body.
3. A corner protector when converting the attitudes of prefabricated panels according to claim 2, wherein the second steel plate (2) is provided at both sides of its lower end with stopper plates (13) to prevent the second steel plate (2) from completely slipping out in the height direction of the first steel plate (1).
4. A corner protector when converting the attitudes of prefabricated panels according to claim 3,
when first steel sheet (1) were kept flat, first rubber slab (4) top elevation was unanimous with prefabricated pedestal top elevation, and first steel sheet (1), first rubber slab (4) and prefabricated pedestal regard as the prefabricated die block board of concrete slab structure jointly.
5. A corner protection device when converting the postures of precast slabs according to claim 4, wherein the second steel plate (2) is provided with a plurality of separation grooves (14), the separation grooves (14) separate the second steel plate (2) into a plurality of insert blocks, and the first steel plate (1) is provided with slide holes (15) matched with the insert blocks.
6. A corner protection device when converting the postures of prefabricated panels according to claim 5, wherein two sides of a sliding hole (15) at the bottom of a first steel plate (1) are respectively connected with a magnet plate (16), a limiting plate (13) is an iron plate, and an electromagnet (17) for attracting the limiting plate (13) is installed at the top of a bracket (8).
7. A construction method of a corner protector at the time of converting an attitude of a prefabricated panel according to any one of claims 1 to 6, comprising the steps of:
a, preparing a concrete slab before prefabrication: before the concrete slab prefabrication construction, a first steel plate (1) is placed at a position attached to a prefabrication pedestal, the first steel plate (1), a first rubber plate (4) and the prefabrication pedestal are used as a bottom formwork of the concrete slab prefabrication, then a second steel plate (2) is slid into a placing groove (6) to avoid influencing the installation and positioning of side formworks of the concrete slab, the gap between the first steel plate (1) and the prefabrication pedestal is small, and in order to increase the flatness of the bottom formwork, a rubber strip (19) is filled in the gap between the first steel plate (1) and the prefabrication pedestal;
b, prefabricating concrete plates: cleaning, polishing and oiling a bottom template, binding steel bars, arranging a pre-buried lifting lug (18), erecting a side template, pouring concrete, and removing the side template after the concrete reaches the required strength;
c, preparation before hoisting: after the side templates are removed, the electric cylinder (7) jacks up the second steel plate (2), the second steel plate (2) slides out, and the position of the second steel plate is fixed by the fixing bolt (12), so that the second rubber plate (5) on the second steel plate (2) and the first rubber plate (4) on the first steel plate (1) are respectively attached to the side edge and the bottom edge of the same ridge;
d, overturning the concrete slab: b, vertically and slowly pulling and hoisting one side of the concrete slab through the embedded lifting lugs in the step b by using a crane, wherein the first steel plate (1) and the second steel plate (2) do not have displacement and rotate around a rotating shaft (3) together, and when the concrete slab is converted from a horizontal position to a vertical position, the posture conversion of the concrete slab is completed;
e, concrete slab relocation: continuously hoisting the concrete slab to separate the concrete slab from the second rubber slab (5) and the first rubber slab (4), and transporting the concrete slab to a storage area or an installation position;
f, homing of the protection device: after the concrete slab is lifted away, the protection device is turned over reversely, so that the first steel plate (1) is restored to the position attached to the prefabricating pedestal, and the second steel plate (2) slides into the storage groove (6) to prepare for the subsequent concrete slab prefabricating construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536127.1A CN114131751B (en) | 2021-12-16 | 2021-12-16 | Corner protection device for prefabricated slab posture conversion and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536127.1A CN114131751B (en) | 2021-12-16 | 2021-12-16 | Corner protection device for prefabricated slab posture conversion and construction method thereof |
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| CN114131751A CN114131751A (en) | 2022-03-04 |
| CN114131751B true CN114131751B (en) | 2022-12-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471043B (en) * | 2009-07-15 | 2014-12-24 | 学校法人庆应义塾 | Load-compensation device |
| CN202265377U (en) * | 2011-08-02 | 2012-06-06 | 巨力索具股份有限公司 | A gravity center deviation type mechanical roll-over device |
| CN204183706U (en) * | 2014-10-27 | 2015-03-04 | 河北新大地机电制造有限公司 | A kind of concrete prefabricated element moving and turning machine |
| CN106142291B (en) * | 2016-08-30 | 2018-05-18 | 保定市华锐方正机械制造有限公司 | A kind of precast concrete fixes die station multifunctional turnover vibrating system |
| CN106272949A (en) * | 2016-09-14 | 2017-01-04 | 湖南三快而居住宅工业有限公司 | Tipping arrangement, method for turning and preform production system |
| CN208759769U (en) * | 2018-07-11 | 2019-04-19 | 锦萧建筑科技有限公司 | Automatic rollover frame for concrete prefabricated board class component |
| CN208948808U (en) * | 2018-10-16 | 2019-06-07 | 山东核电设备制造有限公司 | A kind of large thin-wall form workpiece turnover device used in groups |
| CN209794149U (en) * | 2019-03-26 | 2019-12-17 | 中交第二航务工程局有限公司 | Vertical prefabricated assembled box culvert auxiliary turnover device |
| CN109834814B (en) * | 2019-04-04 | 2021-10-08 | 廊坊海斯建材机械有限公司 | Precast concrete production line |
| CN111331726A (en) * | 2020-04-20 | 2020-06-26 | 东岳机械股份有限公司 | Ground turn-over table steel structure base device based on evaporate aerated concrete production that presses |
| CN111823381A (en) * | 2020-08-07 | 2020-10-27 | 东岳机械股份有限公司 | Die box overturning and lifting device for aerated concrete plate production |
| CN214561837U (en) * | 2021-04-08 | 2021-11-02 | 中建二局土木工程集团有限公司 | Tunnel is turning device for section of jurisdiction |
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