CN106541490B - Preparation device for prefabricated connecting hole and use method thereof - Google Patents
Preparation device for prefabricated connecting hole and use method thereof Download PDFInfo
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- CN106541490B CN106541490B CN201611197753.1A CN201611197753A CN106541490B CN 106541490 B CN106541490 B CN 106541490B CN 201611197753 A CN201611197753 A CN 201611197753A CN 106541490 B CN106541490 B CN 106541490B
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- plastic sleeve
- hollow pipe
- connecting hole
- water injection
- prefabricated
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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
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
- B28B7/32—Cores; Mandrels adjustable, collapsible, or expanding inflatable
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- Manufacturing & Machinery (AREA)
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- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a prefabricated connecting hole preparation device which comprises a sleeve assembly, wherein the sleeve assembly comprises a hollow pipe and an elastic plastic sleeve, the plastic sleeve is sleeved outside the hollow pipe and is communicated with the hollow pipe, a first restraint ring is embedded in the plastic sleeve, and the hollow pipe is connected with a water injection valve. After the technical scheme is adopted, the device for preparing the prefabricated connecting hole can be processed and manufactured before the prefabricated part is poured with concrete, the factory and standardization of the part manufacturing is realized, and the operation is simple and convenient. When the prefabricated part is used for pouring concrete, the hollow pipe supports the prefabricated part, so that the plastic sleeve is prevented from integrally deflecting due to insufficient strength. After water injection and pressurization, the plastic sleeve can expand to form a circle of convex rings and concave-convex shapes, wherein the convex rings and the concave grooves are distributed alternately, and the prefabricated connecting holes are concave-convex shapes, so that the mechanical engaging force between grouting bodies and original concrete can be increased, and the shearing resistance, namely the anti-pulling resistance after the pre-grouting anchor member is connected is improved.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a preparation device of a prefabricated connecting hole suitable for an assembled structure and a using method thereof.
Background
At present, sustainable development and energy conservation and emission reduction are advocated, and the fabricated building is advocated vigorously because of less environmental pollution, energy conservation and environmental protection and lower cost. In the assembly type building, the connection mode of the components is various, wherein the anchor type connection is widely adopted because of convenient connection, beautiful appearance and little influence of site environment. At present, most of grouting holes reserved in the grout anchor type connection are internal threads or round and straight holes. The internal thread prefabricated hole needs to be pre-buried threaded pipe before concrete pouring, but has certain bonding anchor problem between threaded pipe and the concrete. The anchoring effect between the secondary grouting body in the circular straight hole and the original concrete is unreliable, so that cast steel sleeves and other accessories for reinforcing joint connection are additionally arranged in the grouting hole, the manufacturing process is complex, the manufacturing cost is high, and the steel consumption is large.
In view of the above, the inventors of the present invention have made extensive studies on a method for manufacturing a connecting hole of a grout anchor type prefabricated structure, and have made the present invention.
Disclosure of Invention
The invention aims to provide a preparation device for prefabricating a connecting hole, which is novel in structure and convenient to prefabricate.
The invention also aims to provide a using method of the preparation device for the prefabricated connecting hole, which is convenient to operate.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a preparation facilities of prefabricated connecting hole, includes the thimble assembly, the thimble assembly includes the hollow tube and has elastic plastic sleeve pipe, the plastic sleeve pipe box in outside the hollow tube, just the plastic sleeve pipe with the hollow tube is linked together, the plastic sleeve intraductal fixed embedding of cover is equipped with first restraint ring, the hollow tube is connected with a water injection valve.
The pipe wall of the hollow pipe is provided with a plurality of water permeable holes, the plastic sleeve is provided with a plurality of first restraint rings, and the water permeable holes and the first restraint rings are distributed at intervals correspondingly.
The water permeable holes and the first restraint rings are distributed at equal intervals along the axial direction of the sleeve assembly.
Still including being used for fixing the fixed plate of thimble assembly, the top closing cap of hollow tube has a apron, the sheathed tube nose end of plastic extends the installation department that forms the brim of a hat form, the apron of hollow tube with the mounting hole has all been seted up to the fixed plate, the hollow tube the plastic sleeve with fixed pipe passes through respectively the mounting hole is in the same place with the cooperation lock solid of retaining member.
The water injection valve is arranged on the cover plate of the hollow pipe; and a through hole for the hollow pipe to penetrate is formed in the middle of the mounting part, and the through hole is tightly matched with the outer diameter of the hollow pipe.
The first confinement ring is of a non-elastic or low-elastic construction.
The position that is close to in the plastic sleeve pipe the installation department is equipped with and avoids the link of plastic sleeve pipe produces expanded second restraint ring.
The use method of the preparation device for prefabricating the connecting hole comprises the following steps:
1) coating a release agent on the outer side wall of the plastic sleeve;
2) the water injection valve is opened to inject water into the hollow pipe, the water is injected into the plastic sleeve through the water permeable hole, the plastic sleeve expands, the plastic sleeve after water injection is concave-convex due to the constraint action of the first constraint ring, the water injection valve is closed after water injection is completed, and the plastic sleeve is filled with high-pressure water;
3) pouring concrete into the template of the prefabricated part, curing and forming, then opening the water injection valve, discharging high-pressure water flow, naturally shrinking the plastic sleeve, quickly separating from the concrete, and further forming a prefabricated concave-convex connecting hole in the poured concrete.
The device for preparing the prefabricated connecting hole can be processed and manufactured before the prefabricated part is poured with concrete, the factory and standardization of the part manufacturing are realized, and the operation is simple and convenient. When the prefabricated part is used for pouring concrete, the hollow pipe supports the prefabricated part, so that the plastic sleeve is prevented from integrally deflecting due to insufficient strength. After the pressurization water injection, the water injection valve can be closed, guarantees construction quality, prevents that the inside high-pressure water of plastic cover from flowing out, produces deformation.
When the preparation device is used, the preparation device can expand to form a circle of convex rings and concave-convex shapes with grooves distributed alternately after water injection and pressurization, and the prefabricated connecting holes are concave-convex shapes, so that the mechanical engaging force between grouting bodies and original concrete can be increased, and the shearing resistance, namely the pulling resistance of the pre-prepared grouting anchor member after connection is improved.
The outer side wall of the plastic sleeve is coated with a release agent, the water injection valve is opened, and high-pressure water in the plastic sleeve is discharged. After the plastic sleeve automatically retracts to the original shape, the plastic sleeve is automatically separated from the peripheral concrete, and the demoulding is simple and efficient.
When a plurality of prefabricated connecting holes are required to be prepared simultaneously, the hollow pipe and the plastic sleeve can be screwed on the fixing plate through the fixing plate positioned in advance by using bolts, and the positioning can be accurately realized.
Drawings
FIG. 1 is a schematic view of a ferrule assembly according to the present invention;
FIG. 2 is a schematic structural diagram of a fixing plate according to the present invention;
FIG. 3 is a schematic structural view of the sleeve assembly of the present invention expanded after injection of water;
FIG. 4 is a schematic view of the structure of the hollow tube of the present invention;
FIG. 5 is a schematic structural view of a rubber boot according to the present invention;
fig. 6 is a cross-sectional view a-a of the structure of fig. 4 in accordance with the present invention.
In the figure:
a hollow pipe-1; water permeable holes-11;
a cover plate-12; mounting holes-13;
a water injection valve-14; a plastic sleeve-2;
a first confinement ring-21; a mounting portion-22;
mounting holes-23; a through-hole-24;
a second confinement ring-25; a fixed plate-3;
a through-hole-31; mounting holes-32;
bolt-4.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
As shown in figures 1-6, the device for preparing the prefabricated connecting hole comprises a hollow tube 1, a plastic sleeve 2 and a fixing plate 3. The plastic sleeve 2 is sleeved outside the hollow pipe 1, and the fixing plate 3 is used for fixing the plastic sleeve 2 and the hollow pipe 1.
The hollow tube 1 is a structure with two through ends and can be made of hard materials such as steel and the like. The wall of the hollow pipe 1 is provided with a plurality of water permeable holes 11. The plurality of water permeable holes 11 are uniformly distributed along the axial direction or the radial direction of the hollow pipe 1. In this embodiment, three-layer not permeable layer of co-altitude has been seted up to hollow tube 1 along the axial direction equidistance of hollow tube 1, but four permeable holes 11 have been seted up to each permeable layer along the radial direction equidistance of hollow tube 1. It should be noted that, the hollow tube 1 may be provided with a plurality of permeable layers of different heights along the axial direction of the hollow tube 1, and each permeable layer may be provided with a plurality of permeable holes 11 at equal intervals along the radial direction of the hollow tube 1. The top end of the hollow tube 1 is sealed with a cover plate 12. The cover plate 12 has a covering portion corresponding to the opening of the hollow tube 1, and the periphery of the covering portion extends outward to form a mounting portion. The mounting portion of the cover plate 12 is opened with a mounting hole 13. The shape and size of the mounting hole 13 are adapted to the locking member described below. The number and position of the mounting holes 13 can be adjusted adaptively according to the actual situation. The middle part of the cover plate 12 is firmly welded with a water injection valve 14, and the water injection valve 14 is communicated with the inside of the hollow pipe 1. The water injection valve 14 can inject water into the hollow pipe 1 under pressure or discharge high-pressure water in the hollow pipe 1 by controlling the opening or closing of the valve.
The plastic sleeve 2 is matched with the hollow pipe 1, and the plastic sleeve 2 is wrapped outside the hollow pipe 1. A plurality of first constraining rings 21 are fixedly embedded in the plastic sleeve 2 along the radial direction thereof, specifically, the outer circumference of the first constraining rings 21 is fixedly adhered to the inner wall of the plastic sleeve 2. The plurality of first restraining rings 21 are distributed at equal intervals along the axial direction of the plastic sleeve 2, and each first restraining ring 21 is correspondingly distributed between the water permeable layers adjacent along the axial direction of the hollow pipe 1, namely along the axial direction of the hollow pipe 1, and each first restraining ring 21 and each water permeable layer are correspondingly distributed at intervals. The pipe orifice end of the plastic sleeve 2 extends along the radial direction of the plastic sleeve 2 to form a mounting part 22 in the shape of a hat brim. The plastic sleeve 2 is integrally connected to the mounting portion 22. The mounting portion 22 is provided with a mounting hole 23, the position of the mounting hole 23 corresponds to the mounting hole 13, and the shape and size of the mounting hole 13 are adapted to the locking member described below. The middle part of the mounting part 22, namely the position corresponding to the pipe orifice end of the plastic sleeve 2, is provided with a through hole 24 for the hollow pipe 1 to pass through, and the through hole 24 is also used for water injection. The second restraining ring 25 is disposed in the plastic sleeve 2 at a position close to the mounting portion 22, and the second restraining ring 25 can prevent the connecting end of the plastic sleeve 2 from expanding, so as to further ensure the sealing performance of the connecting end of the plastic sleeve 2 and the sealing performance during use. The inner diameter of the first confinement rings 21 is slightly larger than the outer diameter of the hollow tube 1, so that the portions of the plastic sleeve 2 between the first confinement rings 21 are kept in communication with each other after the hollow tube 1 is installed.
In this embodiment, the plastic sleeve 2 and the mounting portion 22 can be made of plastic materials with good elasticity, such as rubber or silica gel, and have good elasticity. The shape and size of the through hole 24 are matched with the outer diameter of the hollow tube 1, and the through hole 24 can be slightly smaller than the outer diameter of the hollow tube 1 and is in close contact with the outer side wall of the hollow tube 1. It should be noted that, when the diameter of the locking member is smaller and the end is sharper, the mounting portion 22 does not need to be provided with a mounting hole, the mounting portion 22 can be punctured to form a mounting hole when being mounted, and the sealing performance is good. The first confinement ring 21 is made of a generally inelastic or low elastic material. The hollow tube 1 of the present invention is preferably in the shape of a circular tube. The plastic sleeve 2 is matched with the hollow pipe 1.
The fixing plate 3 has a plurality of through holes 31, a plurality of mounting holes 32 are formed around each through hole 31, and the shape and size of the mounting holes 32 are respectively matched with the mounting holes 13 and the mounting holes 23. In this embodiment, the locking member is a bolt 4, and the mounting hole 13 and the mounting hole 32 are bolt holes respectively adapted to the bolt 4. The hollow steel pipe 1 and the plastic sleeve 2 can be fixed together by utilizing the matching of the bolts 4 and the bolt holes to form a sleeve assembly, and the sleeve assembly is fixed on the fixing plate 3, specifically, the bolts 4 sequentially pass through the mounting holes 13, 23 and 32, so that the hollow pipe 1, the plastic sleeve 2 and the fixing plate 3 are locked together. The mounting portion 22 also has a function of a gasket when being mounted, so as to ensure the sealing performance between the cover plate 12 covering the top end of the hollow tube 1 and the fixing plate 3. The plurality of through holes 31 can be correspondingly provided with a plurality of groups of sleeve pipe assemblies, can be used for simultaneously preparing a plurality of connecting holes, and can also flexibly adjust the positions of the connecting holes according to the actual construction condition. It should be noted that the number of the through holes 31 can be set according to the designed number and position requirements of the prefabricated connecting holes.
The outer side wall of the plastic sleeve 2 and the opposite surfaces of the fixing plate 3 and the plastic sleeve 2 are uniformly coated with a layer of release agent, so that the outer side wall and the opposite surfaces of the fixing plate 3 and the plastic sleeve 2 are separated from solidified concrete after the concrete is poured in a template of a prefabricated part and then are dismantled.
The use method of the preparation device for the prefabricated connecting hole can sequentially implement the following steps:
1) the outer side wall of the plastic sleeve 2 and the upper and lower side surfaces of the mounting part 22 are coated with release agents, and the contact surface of the fixing plate 3 and the mounting part 22 is also coated with release agents;
2) the water injection valve 14 is opened, water is injected into the hollow pipe 1 through the water injection valve 14, water is injected into the plastic sleeve 2 from the bottom end of the hollow pipe 1 or the water permeable hole 11, so that the plastic sleeve 2 expands, due to the constraint effect of the first constraint ring 21, the plastic sleeve 2 after water injection is concave-convex, convex rings and grooves distributed at intervals are formed, wherein the concave rings and the grooves are both in a closed ring shape, when the size of each convex ring meets the design requirement of a preset connecting hole, the water injection valve 14 is closed, high-pressure water is formed inside the plastic sleeve 2, and the concave-convex degree is not easy to deform;
3) pouring concrete into the template of the prefabricated component, curing and forming, then opening the water injection valve 14, discharging high-pressure water flow in the plastic sleeve 2, and naturally shrinking the elastic plastic sleeve 2, wherein the elastic plastic sleeve 2 is quickly separated from the concrete due to the action of a release agent, so that the prefabricated connecting hole preparation device can be easily pulled out, and a prefabricated concave-convex connecting hole is formed in the poured concrete and can be used for connecting assembled components in later building construction.
The device for preparing the prefabricated connecting hole can be processed and manufactured before the prefabricated part is poured with concrete, the factory and standardization of the part manufacturing are realized, and the operation is simple and convenient. When a plurality of prefabricated connecting holes are simultaneously prepared, the hollow tube 1 and the plastic sleeve 2 can be screwed on the fixing plate 3 through the fixing plate 3 which is positioned in advance by using the bolt 4, and the accurate positioning can be realized.
When the preparation device is used, the preparation device can expand to form a circle of convex rings and concave-convex shapes with grooves distributed alternately after water injection and pressurization, and the prefabricated connecting holes are concave-convex shapes, so that the mechanical engaging force between grouting bodies and original concrete can be increased, and the shearing resistance, namely the pulling resistance of the pre-prepared grouting anchor member after connection is improved.
The invention is supported by the hollow pipe 1 when the precast element is used for pouring concrete, and the plastic sleeve 2 is prevented from integrally deflecting due to insufficient strength. After pressurized water injection, the water injection valve 14 can be closed, so that the construction quality is ensured, and the high-pressure water in the plastic sleeve 2 is prevented from flowing out and deforming.
The outer side wall of the plastic sleeve 2 is coated with a release agent, the water injection valve 14 is opened, and high-pressure water in the plastic sleeve 2 is discharged. After the plastic sleeve 2 automatically retracts to the original shape, the plastic sleeve 2 is automatically separated from the peripheral concrete, and the demoulding is simple and efficient.
The above embodiments and drawings are not intended to limit the forms and modes of the invention, and any suitable changes or modifications thereof by one of ordinary skill in the art should be considered as not departing from the scope of the invention.
Claims (6)
1. The utility model provides a preparation facilities of prefabricated connecting hole which characterized in that: the plastic sleeve is sleeved outside the hollow pipe and is communicated with the hollow pipe, one end of the plastic sleeve is open, the other end of the plastic sleeve is closed, one end of the plastic sleeve, which is open, is fixed with one end of the hollow pipe, a first restraint ring is fixedly embedded in the plastic sleeve, and the hollow pipe is connected with a water injection valve;
a plurality of water permeable holes are formed in the pipe wall of the hollow pipe, the plastic sleeve is provided with a plurality of first restraint rings, and the water permeable holes and the first restraint rings are distributed correspondingly and alternately;
the hollow pipe is made of a hard material, and the first restraint ring is of a non-elastic structure or a low-elastic structure;
when the preparation device is used, the preparation device expands after being injected with water and pressurized to form a circle of convex rings and convex-concave shapes with alternately distributed grooves.
2. The apparatus for preparing a pre-fabricated connecting hole according to claim 1, wherein: the water permeable holes and the first restraint rings are distributed at equal intervals along the axial direction of the sleeve assembly.
3. The apparatus for preparing a pre-fabricated connecting hole according to claim 1, wherein: still including being used for fixing the fixed plate of thimble assembly, the top closing cap of hollow tube has an apron, the sheathed tube nose end of plastic extends the installation department that forms the brim of a hat form, the apron of hollow tube the sheathed tube installation department of plastic with the mounting hole has all been seted up to the fixed plate, the hollow tube the plastic sleeve with the fixed plate passes through respectively the mounting hole is in the same place with the cooperation lock solid of retaining member.
4. The apparatus for preparing a pre-fabricated connecting hole according to claim 3, wherein: the water injection valve is arranged on the cover plate of the hollow pipe; and a through hole for the hollow pipe to penetrate is formed in the middle of the mounting part, and the through hole is tightly matched with the outer diameter of the hollow pipe.
5. The apparatus for preparing a pre-fabricated connecting hole according to claim 3, wherein: the position that is close to in the plastic sleeve pipe the installation department is equipped with and avoids the link of plastic sleeve pipe produces expanded second restraint ring.
6. The use method of the device for preparing the prefabricated connecting hole according to any one of claims 4 to 5, wherein the method comprises the following steps:
1) coating a release agent on the outer side wall of the plastic sleeve;
2) the water injection valve is opened to inject water into the hollow pipe, the water is injected into the plastic sleeve through the water permeable hole, the plastic sleeve expands, the plastic sleeve after water injection is concave-convex due to the constraint action of the first constraint ring, the water injection valve is closed after water injection is completed, and the plastic sleeve is filled with high-pressure water;
3) pouring concrete into the template of the prefabricated part, curing and forming, then opening the water injection valve, discharging high-pressure water flow, naturally shrinking the plastic sleeve, quickly separating from the concrete, and further forming a prefabricated concave-convex connecting hole in the poured concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611197753.1A CN106541490B (en) | 2016-12-22 | 2016-12-22 | Preparation device for prefabricated connecting hole and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611197753.1A CN106541490B (en) | 2016-12-22 | 2016-12-22 | Preparation device for prefabricated connecting hole and use method thereof |
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| Publication Number | Publication Date |
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| CN106541490A CN106541490A (en) | 2017-03-29 |
| CN106541490B true CN106541490B (en) | 2022-04-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107234712B (en) * | 2017-04-07 | 2022-09-06 | 华侨大学 | Assembled inverted trapezoidal connecting hole preparation device |
| CN112095441B (en) * | 2020-08-13 | 2022-01-28 | 盐城工学院 | Construction process for connecting assembled reinforced concrete bridge pier column and capping beam |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH112924A (en) * | 1925-03-24 | 1925-12-01 | Toichi Nose | Improved device for implementing a process for constructing, by molding, a hollow concrete body, without joints. |
| JP2726399B2 (en) * | 1995-07-26 | 1998-03-11 | 新貝工業株式会社 | Method and apparatus for molding concrete product |
| JPH09123144A (en) * | 1995-10-30 | 1997-05-13 | Shinkai Kogyo Kk | Molding machine for concrete product |
| CN201456211U (en) * | 2009-08-08 | 2010-05-12 | 齐新明 | Simple and easy inflatable mould for manufacturing beam slab prestressing hole |
| CN105235056A (en) * | 2014-06-17 | 2016-01-13 | 山东万斯达集团有限公司 | Hole forming method for prefabricated component |
| CN104191507B (en) * | 2014-09-02 | 2016-09-28 | 济南麦哈勃冶金技术开发有限公司 | A kind of use self-pressurization expansion type mould pore-creating and release method on building element |
| CN205889490U (en) * | 2015-05-29 | 2017-01-18 | 张波 | Adopt empty core plate's of precast concrete of rubber tube pore -forming mould |
| CN105014777B (en) * | 2015-07-31 | 2017-03-08 | 广东皓业青花彩瓷股份有限公司 | The master mold of ceramic cup product and its using method |
| CN105019558B (en) * | 2015-08-02 | 2018-07-03 | 长安大学 | The Bar Anchorage connection structure of prefabricated assembled concrete component and connection method |
| CN205171839U (en) * | 2015-10-26 | 2016-04-20 | 中冶建筑研究总院有限公司 | Reinforcing bar grout connecting sleeve |
| CN206344289U (en) * | 2016-12-22 | 2017-07-21 | 华侨大学 | A kind of preparation facilities of prefabricated connecting hole |
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