CN206344289U - A kind of preparation facilities of prefabricated connecting hole - Google Patents

Abstract

The utility model discloses a preparation device for a prefabricated connection hole, which comprises a sleeve component, the sleeve component includes a hollow tube and an elastic plastic sleeve, the plastic sleeve is set outside the hollow tube, and the plastic sleeve is connected with the hollow tube , the plastic casing is embedded with a first restraint ring, and the hollow pipe is connected with a water injection valve. After adopting the technical solution, the utility model provides a preparation device for prefabricated connection holes, which can be processed and manufactured before the prefabricated components are poured with concrete, so as to realize factory-like and standardized production of components, and the operation is simple and convenient. When the prefabricated components are poured with concrete, they are supported by hollow tubes to prevent the overall deflection of the plastic casing due to insufficient strength. After water injection and pressurization, the plastic sleeve can expand to form a circle of convex rings and concave grooves distributed alternately, and then the prefabricated connection holes are concave and convex, which can increase the mechanical bite force between the grouting body and the original concrete. Shear and pullout resistance of prefabricated anchor components after connection.

Description

A preparation device for prefabricated connecting holes

technical field

The utility model relates to the field of civil engineering, in particular to a preparation device suitable for prefabricated connecting holes of assembled structures.

Background technique

Today, when sustainable development and energy saving and emission reduction are advocated, prefabricated buildings are strongly advocated due to less environmental pollution, energy saving, environmental protection and lower cost. In prefabricated buildings, there are various ways to connect components. Among them, the slurry-anchor connection is widely used because of its convenient connection, beautiful appearance, and little impact on the site environment. At present, the reserved grouting holes in the grout-anchor connection are mostly internal threads or round straight holes. The internal thread prefabricated hole needs to pre-embed the threaded pipe before concrete pouring, but there is a certain bonding and anchoring problem between the threaded pipe and the concrete. The anchoring effect between the secondary grouting body and the original concrete in the circular straight hole is unreliable, so more accessories such as cast steel sleeves to strengthen the joint connection are arranged in the grouting hole, which is not only complicated in manufacturing process, but also expensive in cost and steel consumption large.

In view of this, the inventor of this case conducted in-depth research on the preparation method of the connection hole of the slurry-anchored prefabricated structure, and thus this case came into being.

Utility model content

The purpose of the utility model is to provide a device for preparing prefabricated connecting holes with novel structure and convenient prefabrication.

In order to achieve the above object, the utility model adopts the following technical solutions:

A preparation device for prefabricated connecting holes, comprising a sleeve assembly, the sleeve assembly includes a hollow tube and an elastic plastic sleeve, the plastic sleeve is placed outside the hollow tube, and the plastic sleeve and The hollow pipes communicate with each other, a first restraint ring is fixedly embedded in the plastic casing, and a water injection valve is connected to the hollow pipes.

A plurality of water-permeable holes are opened on the pipe wall of the hollow tube, and the plastic sleeve is provided with a plurality of the first confinement rings, and the water-permeable holes and the first confinement rings are correspondingly distributed alternately.

Each of the water permeable holes and each of the first confinement rings along the axial direction of the bushing assembly are distributed at equal intervals.

It also includes a fixing plate for fixing the sleeve assembly, the top of the hollow tube is covered with a cover plate, the nozzle end of the plastic sleeve is extended to form a brim-shaped installation part, and the cover of the hollow tube Both the plate and the fixing plate are provided with installation holes, and the hollow pipe, the plastic sleeve and the fixing pipe are respectively locked together through the cooperation of the installation holes and the locking pieces.

The water injection valve is arranged on the cover plate of the hollow tube; the middle part of the installation part forms a through hole for the hollow tube to pass through, and the through hole closely matches the outer diameter of the hollow tube.

The first confinement ring is a non-elastic structure or a low-elastic structure.

A second constraining ring is provided in the plastic sleeve close to the installation part to prevent expansion of the connection end of the plastic sleeve.

The utility model relates to a preparation device for a prefabricated connection hole, which can be processed and manufactured before the prefabricated component is poured with concrete, thereby realizing industrialization and standardization of component production, and the operation is simple and convenient. When the prefabricated components are poured with concrete, they are supported by hollow tubes to prevent the overall deflection of the plastic casing due to insufficient strength. After pressurized water injection, the water injection valve can be closed to ensure the construction quality and prevent the high-pressure water inside the plastic casing from flowing out and causing deformation.

When the preparation device in the utility model is in use, it can expand after water injection and pressurization to form a circle of convex rings and concave grooves distributed alternately, and then the prefabricated connecting holes are concave and convex, which can increase the grouting body and the original concrete. The mechanical bite force between them increases the shear and pull-out resistance of the prefabricated anchor components after connection.

The outer wall of the plastic casing is coated with a release agent, and the water injection valve is opened to release the high-pressure water in the plastic casing. After the plastic sleeve is automatically retracted to its original shape, the plastic sleeve is automatically disengaged from the surrounding concrete, and the demoulding is simple and efficient.

When it is necessary to prepare multiple prefabricated connecting holes at the same time, the hollow tube and the plastic sleeve can be screwed on the fixed plate with bolts through the pre-positioned fixed plate, so that the accurate positioning can be achieved.

Description of drawings

Fig. 1 is the structural representation of casing assembly in the utility model;

Fig. 2 is the structural representation of fixed plate in the utility model;

Fig. 3 is the schematic diagram of the structure of expansion of casing assembly after water injection in the utility model;

Fig. 4 is the structural representation of hollow tube of the present utility model;

Fig. 5 is the structural representation of rubber bushing in the utility model;

Fig. 6 is the A-A sectional view of the structure shown in Fig. 4 in the utility model.

In the picture:

Hollow pipe-1; Permeable hole-11;

Cover-12; Mounting hole-13;

Water injection valve-14; Plastic casing-2;

First confinement ring-21; Mounting part-22;

Mounting hole-23; Through hole-24;

Second confinement ring-25; Fixed plate-3;

Through hole-31; Mounting hole-32;

Bolt - 4.

detailed description

In order to further explain the technical solution of the utility model, the utility model is described in detail through specific examples below.

As shown in Figures 1-6, the utility model is a preparation device for prefabricated connecting holes, which includes a hollow tube 1, a plastic sleeve 2 and a fixing plate 3. The plastic sleeve 2 is set outside the hollow tube 1, and the fixing plate 3 is used for fixing the plastic sleeve 2 and the hollow tube 1.

The hollow tube 1 is a transparent structure at both ends, and can be made of hard materials such as steel. A plurality of permeable holes 11 are opened on the tube wall of the hollow tube 1 . A plurality of permeable holes 11 are evenly distributed along the axial direction or radial direction of the hollow tube 1 . In this embodiment, the hollow tube 1 is equidistantly provided with three permeable layers of different heights along the axial direction of the hollow tube 1 , and each permeable layer is provided with four permeable holes 11 equidistantly along the radial direction of the hollow tube 1 . It should be noted that the hollow tube 1 can be provided with multiple water-permeable layers of different heights along the axial direction of the hollow tube 1 , and each water-permeable layer can be provided with a plurality of water-permeable holes 11 equidistant 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 mouth 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 defines a mounting hole 13 . The shape and size of the mounting hole 13 are compatible with the following locking elements. The quantity and position of the mounting holes 13 can be adaptively adjusted according to the actual situation. A water injection valve 14 is firmly welded in the middle of the cover plate 12 , and the water injection valve 14 communicates with the inside of the hollow pipe 1 . The water injection valve 14 can pressurize and inject water into the hollow pipe 1 by controlling the opening or closing of its valve, or release the high-pressure water in the hollow pipe 1 .

The plastic sleeve 2 is compatible with the hollow pipe 1, and the plastic sleeve 2 is wrapped outside the hollow pipe 1. A plurality of first confinement rings 21 are fixedly embedded in the plastic sleeve 2 along its radial direction. Specifically, the outer peripheral edges of the first confinement rings 21 are fixedly adhered to the inner wall of the plastic sleeve 2 . A plurality of first confinement rings 21 are distributed at equal intervals along the axial direction of the plastic sleeve 2, and each first confinement ring 21 is correspondingly distributed between adjacent water-permeable layers along the axial direction of the hollow tube 1, that is, along the hollow tube 1 In the axial direction, each first confinement ring 21 is correspondingly distributed with each water-permeable layer. The nozzle end of the plastic sleeve 2 extends along the radial direction of the plastic sleeve 2 to form a brim-shaped mounting portion 22 . The plastic sleeve 2 is integrally connected with the installation part 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 compatible with the following locking elements. The middle part of the mounting part 22, that is, the position corresponding to the nozzle end of the plastic sleeve 2, forms a through hole 24 for the hollow tube 1 to pass through, and the through hole 24 is also used for water injection. A second confinement ring 25 is provided in the plastic sleeve 2 close to the installation part 22. The second confinement ring 25 can prevent the connection end of the plastic sleeve 2 from expanding, and further ensure the connection end of the plastic sleeve 2 and the sealing during use. sex. The inner diameter of the first confinement rings 21 is slightly larger than the outer diameter of the hollow pipe 1 , so that the parts of the plastic sleeve 2 between the first confinement rings 21 remain connected to each other after the hollow pipe 1 is installed.

In this embodiment, both the plastic sleeve 2 and the mounting part 22 can be made of elastic plastic materials such as rubber or silica gel, and have good stretchability. The shape and size of the through hole 24 are adapted to the outer diameter of the hollow tube 1 , the through hole 24 can be slightly smaller than the outer diameter of the hollow tube 1 , and it is in close contact with the outer wall of the hollow tube 1 . It should be noted that, when the diameter of the locking member described below is small and the end is relatively sharp, the installation portion 22 does not need to be provided with an installation hole, and the installation portion 22 can be pierced to form an installation hole during installation, and the sealing performance is good. The first confinement ring 21 is made of common inelastic or low elastic materials. The hollow tube 1 of the present utility model is preferably in the shape of a round tube. The plastic sleeve 2 is compatible with the hollow pipe 1.

The fixing plate 3 is provided with a plurality of through holes 31 , and a plurality of installation holes 32 are respectively provided on the peripheral side of each through hole 31 . The shape and size of the installation holes 32 are adapted to the installation holes 13 and 23 respectively. In this embodiment, the locking member adopts the bolt 4, and the installation hole 13 and the installation hole 32 are both bolt holes, which are adapted to the bolt 4 respectively. Using the cooperation between the bolts 4 and the bolt holes, the hollow steel pipe 1 and the plastic casing 2 can be fixed together to form a casing assembly, and at the same time, the casing assembly is fixed on the fixing plate 3. Specifically, the bolts 4 pass through the installation holes in sequence 13. The installation hole 23 and the installation hole 32, and then the hollow pipe 1, the plastic sleeve 2 and the fixing plate 3 are locked together. The installation part 22 also has the function of a gasket during installation to ensure the sealing between the cover plate 12 covering the top end of the hollow tube 1 and the fixing plate 3 . A plurality of through holes 31 can be correspondingly installed with a plurality of sleeve assemblies, which can be used to prepare a plurality of connection holes at the same time, and can also flexibly adjust the positions of the connection holes according to actual construction conditions. It should be noted that the number of through holes 31 can be set according to the number and location requirements of the designed prefabricated connection holes.

The outer wall of the plastic casing 2 and the opposite surface of the fixing plate 3 and the plastic casing 2 are evenly coated with a layer of release agent, so that the solidified concrete can be removed after pouring concrete in the formwork of the prefabricated component.

The utility model relates to a preparation device for a prefabricated connection hole, which can be processed and manufactured before the prefabricated component is poured with concrete, thereby realizing industrialization and standardization of component production, and the operation is simple and convenient. When multiple prefabricated connection holes need to be prepared at the same time, the hollow pipe 1 and the plastic sleeve 2 can be tightened on the fixed plate 3 with bolts 4 through the pre-positioned fixed plate 3, so as to accurately position.

When the preparation device in the utility model is in use, it can expand after water injection and pressurization to form a circle of convex rings and concave grooves distributed alternately, and then the prefabricated connecting holes are concave and convex, which can increase the grouting body and the original concrete. The mechanical bite force between them increases the shear and pull-out resistance of the prefabricated anchor components after connection.

The utility model is supported by the hollow tube 1 when the prefabricated component is poured with concrete, so as to prevent the overall deflection of the plastic casing 2 due to insufficient strength. After pressurized water injection, the water injection valve 14 can be closed to ensure the construction quality and prevent the high-pressure water inside the plastic sleeve 2 from flowing out and causing deformation.

The outer wall of the plastic casing 2 is coated with a release agent, and the water injection valve 14 is opened, and the high-pressure water in the plastic casing 2 is released. After the plastic sleeve 2 is automatically retracted to its original shape, the plastic sleeve 2 is automatically disengaged from the surrounding concrete, and the demoulding is simple and efficient.

The above-mentioned embodiments and drawings do not limit the product form and style of the utility model patent, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the utility model patent.

Claims (7)

1. A preparation device for prefabricated connecting holes, characterized in that: it includes a sleeve assembly, the sleeve assembly includes a hollow tube and an elastic plastic sleeve, the plastic sleeve is placed outside the hollow tube, and The plastic casing communicates with the hollow pipe, a first restraining ring is fixedly embedded in the plastic casing, and a water injection valve is connected to the hollow pipe. 2. The device for preparing a prefabricated connecting hole according to claim 1, wherein a plurality of permeable holes are provided on the wall of the hollow tube, and a plurality of the first holes are provided in the plastic sleeve. Constraint rings, the water permeable holes and the first confinement rings are correspondingly distributed alternately. 3. A preparation device for prefabricated connection holes according to claim 2, characterized in that: each of the water permeable holes and each of the first confinement rings along the axial direction of the sleeve assembly are in the same shape, respectively. Spacing distribution. 4. The preparation device of a kind of prefabricated connecting hole according to claim 1, characterized in that: it also includes a fixing plate for fixing the sleeve assembly, the top of the hollow tube is covered with a cover plate, the The nozzle end of the plastic sleeve extends to form a brim-shaped installation part, and the cover plate of the hollow tube and the fixing plate are provided with installation holes, and the hollow tube, the plastic sleeve and the fixing tube are respectively Through the cooperation of the mounting hole and the locking piece, they are locked together. 5. A preparation device for a prefabricated connection hole according to claim 4, characterized in that: the water injection valve is arranged on the cover plate of the hollow tube; The through hole is inserted, and the through hole is closely matched with the outer diameter of the hollow tube. 6 . The device for preparing a prefabricated connecting hole according to claim 1 , wherein the first constraining ring is a non-elastic structure or a low-elastic structure. 7 . 7. The device for preparing a prefabricated connection hole according to claim 4, characterized in that: the inside of the plastic sleeve near the installation part is provided with a second hole to prevent the expansion of the connection end of the plastic sleeve. confinement ring.