Concrete structure embedded sleeve fixing device and mounting method
By designing a concrete structure embedded casing fixing device that utilizes magnetic force and deformable sealing cavity, the problems of unfixed and poor sealing of the embedded casing are solved, and the stable positioning and good sealing of the casing are achieved, and the construction efficiency and reliability of later construction are improved.
Patent Information
- Application Number
- CN202510090404.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-05-02
AI Technical Summary
During the construction of concrete structures, the embedded casing is not firmly fixed and sealed, which affects the progress of the project and later construction.
A concrete structure embedded casing fixing device is designed, including a first support plate, a second support plate and a formwork, and the positioning and sealing of the casing is achieved by using magnetic force and a deformable sealing cavity. The guide rod and the telescopic rod are combined with the return spring and the locking part to adapt to the casing of different pipe diameters.
It realizes stable positioning and good sealing of the casing, improves construction efficiency and reliability of later construction, and adapts to the use of different pipe diameters.
Smart Images
Figure CN119914067A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of concrete construction, and in particular to a pre-buried sleeve fixing device for a concrete structure and an installation method. Background Art
[0002] During the construction of concrete structures, it is usually necessary to embed some casings in the concrete structure. For example, to fix the casing, additional steel bars and welded steel bars need to be added around the casing, which affects the progress of the project. In addition, in order to prevent the surrounding concrete slurry from entering the casing when pouring concrete, the openings at both ends of the embedded casing (i.e., ports) need to be sealed. The traditional method of using tape to seal the open parts is not only troublesome to disassemble and assemble, but also some of the embedded casings are displaced after the formwork is removed, making it difficult to find the embedded casings, affecting the later construction. Some of the embedded casing tapes are damaged, and concrete flows into the casing, requiring cleaning of the concrete in the casing, which is time-consuming and laborious. Summary of the invention
[0003] In order to solve at least one of the above technical problems, the present invention provides a fixing device and an installation method for a pre-buried sleeve in a concrete structure.
[0004] The technical solution adopted by the present invention is to design a pre-buried sleeve fixing device for a concrete structure, wherein the fixing device includes a first support plate, a second support plate and a template for forming a concrete structure, an elastic membrane is connected between the edges of the first support plate and the second support plate, the first support plate, the second support plate and the elastic membrane form a sealed cavity, the first support plate moves relative to the second support plate, thereby causing the elastic membrane to radially expand and contract, a magnet is arranged on the second support plate, and the template has a material that can be attracted by the magnetic field of the magnet.
[0005] In some embodiments, the second support disk is circumferentially distributed with a plurality of radial slots, a telescopic rod is slidably engaged in the radial slot, a return spring is supported between the telescopic rod and the slot, the return spring makes the telescopic rod radially extend relative to the second support disk, a guide rod inclined relative to the telescopic rod is provided at the end of the telescopic rod, the guide rod includes a first end facing the direction of the first support disk and a second end away from the first support disk, and the radial distance from the first end to the central axis of the first support disk is greater than that of the second end.
[0006] In some embodiments, a guide shaft is disposed on the second support plate, a support plate is slidably sleeved on the guide shaft, and the magnet is disposed on the support plate.
[0007] In some embodiments, the middle portion of the guide rod is rotatably connected to the end of the telescopic rod via an axial hinge, the end of the guide shaft is provided with a locking portion for limiting the movement of the support plate, and the second end of the guide rod is located between the support plate and the second support disk.
[0008] In some embodiments, a roller is disposed at the second end of the guide rod.
[0009] In some embodiments, a support spring is provided between the locking portion and the support plate.
[0010] In some embodiments, a roller is disposed on the first end of the guide rod.
[0011] In some embodiments, a connector for connecting to the template is disposed on the first support plate.
[0012] In some embodiments, the connecting member is a bolt.
[0013] A method for installing a pre-buried sleeve fixing device for a concrete structure, first, placing the fixing device into the pre-buried pipe so that the first support plate and the second support plate are arranged along the axial direction of the pre-buried pipe, and the first support plate is located outside the second support plate relative to the pre-buried pipe, so that the first support plate is located at the port of the pre-buried pipe, and then, fixing the template on the plane where the port of the pre-buried pipe is located, under the attraction of the magnet and the template, the second support plate moves toward the first support plate, so that the elastic membrane radially extends out and presses on the inner wall of the pre-buried pipe, thereby achieving fixation and sealing of the pre-buried pipe.
[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes magnetic force in combination with a deformable sealing cavity so that the sleeve can be positioned relative to the template and maintain a good seal, and utilizes circumferentially distributed guide rods to achieve guidance and fixation of the fixing device, which is beneficial to the movement of the fixing device relative to the sleeve in or out and the temporary positioning of the fixing device. The guide rod is also beneficial to providing support to the elastic membrane at the side, so that the elastic membrane exerts greater pressure on the inner wall of the sleeve and has better sealing, so that the angle of the guide rod relative to the telescopic rod can be adjusted under the action of the support plate, which is beneficial to adapt to the use of sleeves of different diameters, so that the angle of the guide rod can be adaptively changed as needed. When the support plate is close to the second support plate, the guide rod is in a nearly upright state, which is beneficial to the deformation and expansion of the elastic membrane to have a larger contact area with the inner wall of the sleeve, and is also beneficial to the support of the side of the elastic membrane. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention is described in detail below in conjunction with specific embodiments and drawings. In order to show details and facilitate understanding of its principles, it is not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them: Figure 1 It is a schematic diagram of embodiment 1.
[0016] Figure 2 Schematic diagram of radial extension of the elastic membrane of the first embodiment.
[0017] Figure 3 It is a schematic diagram of the second embodiment.
[0018] Figure 4 yes Figure 3 Schematic diagram of the AA section.
[0019] Figure 5 It is a schematic diagram of the radial extension of the elastic membrane of the second embodiment.
[0020] Figure 6 It is a schematic diagram of embodiment 3.
[0021] Figure 7 It is a schematic diagram of radial extension of the elastic membrane of the third embodiment.
[0022] In the figure, 1, first support plate; 2, second support plate; 3, template; 4, elastic membrane; 5, magnet; 6, bolt; 7, nut; 8, radial slide groove; 9, guide rod; 91, first end; 92, second end; 10, return spring; 11, telescopic rod; 12, guide shaft; 13, support plate; 14, shaft hinge; 15, stopper; 16, support spring; 17, sleeve. DETAILED DESCRIPTION
[0023] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the invention involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required for the solutions of the invention.
[0024] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.
[0025] Embodiment 1 like Figure 1 , 2As shown, a fixing device for embedded sleeves of concrete structure, the fixing device comprises a first support plate 1, a second support plate 2 and a template 3 for forming a concrete structure, an elastic membrane 4 is connected between the edges of the first support plate 1 and the second support plate 2, for example, it can be a rubber membrane, the first support plate 1, the second support plate 2 and the elastic membrane 4 form a sealed cavity, and air with a certain pressure is arranged in the sealed cavity, the first support plate 1 moves relative to the second support plate 2, so that the elastic membrane 4 can be radially expanded and contracted, a magnet 5 is arranged on the second support plate 2, and the template 3 has a material that can be attracted by the magnetic field of the magnet 5, for example, the template 3 is an iron template 3. The template 3 for concrete forming is a temporary structural support used to control and limit the shape of concrete pouring during the construction process.
[0026] During construction, first, temporarily locate the position of the embedded pipe, and then put the fixing device into the embedded pipe, so that the first support plate 1 and the second support plate 2 are arranged along the axial direction of the embedded pipe, and the first support plate 1 is located outside the second support plate 2 relative to the embedded pipe, so that the first support plate 1 is located at the port of the embedded pipe, and then the template 3 is fixed on the plane where the port of the embedded pipe is located. Under the attraction of the magnet 5 and the template 3, the second support plate 2 moves toward the first support plate 1, so that the elastic membrane 4 radially extends and presses on the inner wall of the embedded pipe, thereby achieving the fixation and sealing of the embedded pipe. The sleeve 17 usually has two ports, front and back. For this reason, during construction, one fixing device can be placed in each of the two ports, so that both ports can be fixed and sealed relative to the template 3.
[0027] Furthermore, a connecting piece for connecting the template 3 can be provided on the first support plate 1. The connecting piece in this embodiment is a bolt 6. A through hole corresponding to the bolt 6 can be provided on the template 3, so that the bolt 6 passes through the through hole and then is fixed to the template 3 with a nut 7, thereby realizing the connection between the first support plate 1 and the template 3, which is beneficial to better fix the sleeve 17 relative to the template 3, thereby realizing the positioning of the sleeve 17.
[0028] Embodiment 2 like Figure 3 , 4As shown in Figure 5, different from the above-mentioned embodiment, a plurality of radial grooves 8 are distributed circumferentially on the other side of the second support disk 2 relative to the first support disk 1. In this embodiment, there are twelve radial grooves 8. On the side wall of the second support disk 2 outside the sealing cavity, a telescopic rod 11 is slidably matched in the radial groove 8. A return spring 10 is supported between the telescopic rod 11 and the groove, so that in a natural state, the return spring 10 makes the telescopic rod 11 radially extend relative to the second support disk 2. A guide rod 9 inclined relative to the telescopic rod 11 is provided at the end of the telescopic rod 11. The guide rod 9 includes a first end 91 facing the direction of the first support disk 1 and a first end 92 away from the first support disk 1. 1, the distance between the first end 91 and the central axis of the first support plate 1 in the radial direction is greater than the second end 92, so that all the guide rods 9 in the circumferential direction are equivalent to forming a trumpet, so that when the fixing device is placed in the sleeve 17, the trumpet-shaped structure formed by the guide rods 9 is conducive to providing guiding support for the entry of the fixing device. When the fixing device enters the sleeve 17, under the action of the return spring 10, the first end 91 of the guide rod 9 is supported on the inner wall of the sleeve 17, so as to facilitate the position stability of the fixing device relative to the sleeve 17. Since the telescopic rod 11 is telescopic, it is conducive to the fixing device being used for sleeves 17 of different thicknesses. The second end 92 of the guide rod 9 is provided with a roller. The first end 91 of the guide rod 9 is provided with a roller to facilitate the movement of the guide rod 9 relative to the sleeve 17, reduce the friction with the side wall, and facilitate the movement of the fixing device relative to the sleeve 17. The guide rod 9 is also beneficial for providing support to the elastic membrane 4 at the side, so that the elastic membrane 4 exerts greater pressure on the inner wall of the sleeve 17 and has better sealing performance.
[0029] Embodiment 3 like Figure 6 , 7 As shown, different from the above embodiment, a guide shaft 12 is provided on the second support plate 2, a support plate 13 is slidably sleeved on the guide shaft 12, the magnet 5 is fixed on the support plate 13, and the support plate 13 can approach or move away from the second support plate 2 along the guide shaft 12.
[0030] The middle portion of the guide rod 9 is rotatably connected to the end of the telescopic rod 11 via an axial hinge 14, that is, unlike the second embodiment in which the middle portion of the guide rod 9 is fixedly connected to the end of the telescopic rod 11, but is rotatably connected, so that the guide rod 9 can rotate a certain angle relative to the end of the telescopic rod 11, and the end of the guide shaft 12 is provided with a locking portion 15 for limiting the movement of the support plate 13, and the second end 92 of the guide rod 9 is located between the support plate 13 and the second support disk 2, so that the second end 92 of the guide rod 9 can support the plate surface of the support plate 13, and the second end 92 of the guide rod 9 is provided with a roller, which is conducive to the radial movement of the second end 92 of the guide rod 9 relative to the plate surface of the support plate 13 to reduce friction. In this way, the inclination angle of the guide rod 9 can be adjusted with the movement of the support plate 13, so that when the fixing device is placed in or removed from the sleeve 17, the guide rod 9 plays a guiding and supporting role, and when the magnet 5 drives the support plate 13 to move toward the template 3, the angle of the guide rod 9 relative to the telescopic rod 11 changes under the top pressure of the support plate, and the guide rod 9 can be closer to the second support plate 2, so that the magnet 5 and the support plate 13 are closer to the second support plate 2, and then closer to the template 3, and are subjected to a larger magnetic force, so that the first support plate 1 is close to the second support plate 2, so that the elastic membrane 4 is more tightly combined with the inner wall of the sleeve 17. When the template 3 is removed, the magnetic force disappears, and the return spring 10 pushes the guide rod 9 outward, so that the second end 92 of the guide rod 9 pushes the support plate 13 outward, so that the support plate 13 is away from the second support disk 2, which is conducive to moving the fixing device out of the sleeve 17. When the fixing device is placed in the sleeve 17, the edge of the sleeve 17 port pushes the guide rod 9 so that the guide rod 9 overcomes the elastic force of the return spring 10, so that the guide rod 9 contracts radially, so that the first end 91 enters the sleeve 17, and under the action of the elastic force of the return spring 10, the second end 92 supports the inner wall of the sleeve 17. When the support plate 13 is close to the second support disk 2, the guide rod 9 is in a nearly upright state, which is conducive to the deformation and expansion of the elastic membrane 4 and has a larger contact area with the inner wall of the sleeve 17, and is also conducive to supporting the side of the elastic membrane 4.
[0031] In actual design, it should be ensured that when the return spring 10 makes the telescopic rod 11 extend to the longest state and the support plate 13 moves to the locking portion 15, the second end 92 of the guide rod 9 cannot be separated from between the support plate 13 and the second support plate 2. The specific design is based on actual needs and is a simple mechanical design, which will not be elaborated here.
[0032] Furthermore, a support spring 16 can be arranged between the locking portion 15 and the support plate 13, so that the support spring 16 can make the support plate 13 close to the second support disk 2, thereby pushing the second end 92 of the guide rod 9, so that the first end 91 of the guide rod 9 extends radially to a greater length, which is beneficial to supporting and guiding the larger diameter sleeve 17.
[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them in similar ways, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
Claims
1. A fixing device for embedded casing in concrete structure, characterized in that: The fixing device includes a first support plate, a second support plate and a template for forming a concrete structure. An elastic membrane is connected between the edges of the first support plate and the second support plate. The first support plate, the second support plate and the elastic membrane form a sealed cavity. The first support plate moves relative to the second support plate, so that the elastic membrane radially expands and contracts. A magnet is arranged on the second support plate, and the template has a material that can be attracted by the magnetic field of the magnet.
2. The concrete structure embedded casing fixing device according to claim 1 is characterized in that: The second support disk is circumferentially provided with a plurality of radial slots, a telescopic rod is slidably fitted in the radial slot, a return spring is supported between the telescopic rod and the slot, the return spring enables the telescopic rod to radially extend relative to the second support disk, a guide rod inclined relative to the telescopic rod is provided at the end of the telescopic rod, the guide rod comprises a first end facing the direction of the first support disk and a second end away from the first support disk, and a radial distance from the first end to the central axis of the first support disk is greater than that of the second end.
3. The concrete structure embedded casing fixing device according to claim 2 is characterized in that: The second supporting disk is provided with a guide shaft, a supporting plate is slidably sleeved on the guide shaft, and the magnet is provided on the supporting plate.
4. The concrete structure embedded casing fixing device according to claim 3 is characterized in that: The middle portion of the guide rod is rotatably connected to the end of the telescopic rod through an axis hinge, the end of the guide shaft is provided with a stopper for limiting the movement of the support plate, and the second end of the guide rod is located between the support plate and the second support disk.
5. The concrete structure embedded casing fixing device according to claim 4 is characterized in that: The second end of the guide rod is provided with a roller.
6. The concrete structure embedded casing fixing device according to claim 4 is characterized in that: A support spring is arranged between the locking portion and the support plate.
7. The concrete structure embedded casing fixing device according to claim 2, characterized in that: A roller is arranged on the first end of the guide rod.
8. The concrete structure embedded casing fixing device according to claim 1, characterized in that: The first supporting plate is provided with a connecting piece for connecting the template.
9. The concrete structure embedded casing fixing device according to claim 8, characterized in that: The connecting piece is a bolt.
10. A method for installing the pre-buried sleeve fixing device for a concrete structure according to any one of claims 1 to 9, characterized in that: First, the fixing device is placed into the embedded pipe so that the first support plate and the second support plate are arranged along the axial direction of the embedded pipe, and the first support plate is located outside the second support plate relative to the embedded pipe, so that the first support plate is located at the port of the embedded pipe. Then, the template is fixed on the plane where the port of the embedded pipe is located. Under the attraction of the magnet and the template, the second support plate moves toward the first support plate, so that the elastic film radially extends out and presses on the inner wall of the embedded pipe, thereby achieving fixation and sealing of the embedded pipe.