Quick-removal concrete floor hole preserver

Abstract

The application discloses a kind of concrete floor hole fast removal type preserver, including rubber air bag for abutting to the inner wall of concrete floor reserved hole, rubber air bag is opened in length direction both ends and two connecting discs are fixedly installed respectively, at least one connecting disc is provided with gas sending pump relative to the surface of rubber air bag side, the gas outlet end of gas sending pump is penetrated at least one connecting disc and extends to the inside of rubber air bag, two connecting discs are slidably installed with two groups of sliding plates respectively along the radial direction of connecting disc in the side of mutual approach, each group of sliding plate is evenly provided with multiple along the circumference of rubber air bag, multiple sliding plates are fixedly connected with the inner wall of rubber air bag relative to the side of connecting disc, the application greatly reduces the adhesion and pressure of reserved hole, does not stick too much concrete when removing, effectively guarantee the reserved hole structural integrity and the convenience degree of preserver removal, with higher popularization value.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a pre-installed device for quick removal of holes in concrete floor slabs. Background Technology

[0002] During building construction or decoration, in order to ensure the installation of building water supply and drainage pipes and building water and electricity, the traditional method was to drill a large hole in the floor slab, pass the pipe or pipe section to be installed through the hole, and then fill the outside of the pipe with concrete. This method not only damaged the original structure of the floor slab, but also made the filled area prone to leakage. The current common method is to use a pre-drilling tool to pre-drill holes at the locations where the pipes pass through the floor slab when pouring the floor slab.

[0003] Existing concrete slab opening removal devices are typically removed by pulling them outwards. Since the concrete is not fully solidified at this time, friction causes some concrete to be pulled outwards, damaging the structure of the reserved hole in the concrete slab and affecting the ease of removal and effectiveness of the concrete removal device. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a quick-release pre-reservation device for concrete floor slab openings. This solves the problem that existing pre-reservation devices for concrete floor slab openings are removed by directly pulling them outwards, which damages the structure of the pre-reserved hole in the concrete floor slab and affects the ease of removal and effectiveness of the pre-reservation device.

[0005] To achieve the above objectives, the present invention provides a quick-removal pre-installation device for concrete floor slab openings, comprising:

[0006] A rubber airbag is used to abut against the inner wall of a pre-drilled hole in a concrete floor slab. The rubber airbag has two openings along its length and two connecting plates are fixedly installed at both ends. At least one of the connecting plates has an air pump on its surface opposite to the rubber airbag. The air outlet of the air pump passes through at least one of the connecting plates and extends into the interior of the rubber airbag. Two sets of sliding plates are slidably installed radially on the sides of the two connecting plates that are close to each other. Each set of sliding plates has multiple plates evenly distributed along the circumference of the rubber airbag. The sides of the multiple sliding plates opposite to the connecting plates are fixedly connected to the inner wall of the rubber airbag.

[0007] Preferably, two fixing plates are fixedly installed on the side of each of the two connecting discs that are far apart from each other, and a handle is fixedly connected between the two fixing plates.

[0008] Preferably, a limiting plate is fixedly connected to one side of the two sets of sliding plates that are close to each other, and the surface of the limiting plate relative to the connecting plate is fixedly connected to the inner wall of the rubber airbag.

[0009] Preferably, a reinforcing rib is telescopically installed between two adjacent limiting plates along the circumference of the connecting disc, and the surface of the reinforcing rib relative to one side of the connecting disc is fixedly connected to the inner wall of the rubber airbag.

[0010] Preferably, each of the two connecting discs has a sliding groove along the radial direction of the connecting disc on the side that is close to each other, for the sliding plate to slide on.

[0011] Preferably, a telescopic rod is radially and retractably installed in the sliding groove along the connecting plate. The two ends of the telescopic rod along the telescopic direction are respectively fixedly connected to the sliding plate and the inner wall of the sliding groove, and a connecting spring is provided around the outside of the telescopic rod.

[0012] Preferably, at least one of the connecting plates has an air inlet cover fixedly installed on one side of the air pump, the air inlet end of the air pump passes through the air inlet cover and extends into the interior of the air inlet cover, and the outer surface of the air inlet cover is uniformly provided with a plurality of air inlet slots.

[0013] Preferably, at least one of the connecting discs has a control valve fixedly connected to one side of the rubber airbag.

[0014] Preferably, a stabilizing base is fixedly mounted on at least one of the connecting plates, and the air pump is fixedly mounted on one side of the stabilizing base relative to at least one of the connecting plates.

[0015] Preferably, a sealing ring is fixedly installed at each of the two openings, and the sealing ring is fixedly connected to the connecting plate and the rubber airbag respectively.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects:

[0017] By using a connecting plate in conjunction with a rubber airbag and an air pump to provide air pressure, the rubber airbag can expand to form the shape of a pre-drilled hole. When the pre-drilled device needs to be removed, the air inside the rubber airbag is released through a control valve. At this time, the volume of the rubber airbag decreases, thereby reducing the adhesion and pressure between the rubber airbag and the concrete of the pre-drilled hole. Pulling the pre-drilled device outward is not only easier, but also prevents excessive adhesion to the concrete. This ensures the structural integrity of the pre-drilled hole and facilitates the removal of the pre-drilled device from the concrete floor slab. Through the elastic force provided by the connecting spring, combined with the sliding groove, sliding plate, and limiting plate, the shape of the rubber airbag is better maintained when it expands. When the rubber airbag is deflated, it can be pulled inward to reduce its inner diameter, further increasing the ease of removal of the pre-drilled device and reducing concrete adhesion. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the rubber airbag in this invention.

[0020] Figure 2 This is a cross-sectional three-dimensional structural diagram of the rubber airbag in this invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the connecting spring in this invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the connecting disk in this invention.

[0023] The correspondence between the numbers in the attached diagram is as follows:

[0024] 1-Rubber airbag; 2-Connecting plate; 3-Air pump; 4-Sliding plate; 5-Limiting plate; 6-Sliding groove; 7-Connecting spring; 8-Control valve; 9-Fixing plate; 10-Grip; 11-Sealing ring; 12-Reinforcing rib; 13-Reinforcing plate; 14-Stabilizing base; 15-Air inlet cover; 16-Air inlet groove; 17-Telescopic rod. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] The technical problem this invention aims to solve is that existing quick-removal pre-drilling devices for concrete floor slab openings, while facilitating the separation of the pre-drilling mold from the inner wall of the pre-drilling hole through a rotating structure, thus solving the problem of the mold easily pulling on the inner wall of the pre-drilling hole, are typically removed by pulling them outwards. Since the concrete is not fully solidified at this point, friction causes some concrete to be pulled outwards, damaging the structure of the pre-drilling hole in the concrete floor slab and affecting the ease of removal and effectiveness of the pre-drilling device. Therefore, this invention provides a quick-removal pre-drilling device for concrete floor slab openings that effectively ensures the structural integrity of the pre-drilling hole and the ease of removal.

[0027] Please see Figures 1 to 4 As shown, the present invention provides a quick-release pre-reservation device for concrete floor slab holes, including a rubber airbag 1 for abutting against the inner wall of the pre-reserved hole in the concrete floor slab. The rubber airbag 1 has openings at both ends along its length and two connecting plates 2 are fixedly installed thereon. Each of the two openings is provided with a sealing ring 11, which is fixedly connected to the plate 2 and the rubber airbag 1 respectively. Preferably, in this embodiment, two fixing plates 9 are fixedly installed on the side of the two connecting plates 2 that are far apart from each other. A handle 10 is fixedly connected between the two fixing plates 9. The setting of the fixing plates 9 and the handle 10 makes it convenient for workers to hold, thereby making it more convenient and quick to pick up.

[0028] Furthermore, at least one connecting plate 2 has an air pump 3 on its surface opposite to the rubber airbag 1. The air outlet of the air pump 3 passes through at least one connecting plate 2 and extends into the interior of the rubber airbag 1. In this embodiment, a stabilizing base 14 is fixedly installed on the surface of at least one connecting plate 2 opposite to the rubber airbag 1. The air pump 3 is fixedly installed on the stabilizing base 14 on the side opposite to the connecting plate 2. An air inlet cover 15 is fixedly installed on the connecting plate 2 on the side of the air pump 3. The air inlet of the air pump 3 passes through the air inlet cover 15 and extends into the interior of the air inlet cover 15. The outer surface of the air inlet cover 15 is evenly provided with a plurality of equally spaced air inlet slots 16. By cooperating with the air inlet slots 16, the air can be smoothly drawn into the air pump 3 while preventing external impurities from entering the interior of the air pump 3, making the air pump 3 less prone to being blocked by impurities.

[0029] Furthermore, a control valve 8 is fixedly connected to the surface of the connecting plate 2 on the side opposite to the rubber airbag 1. It should be noted that by setting the connecting plate 2 and the air pump 3, the connecting plate 2, together with the rubber airbag 1 and the air pump 3, can make the rubber airbag 1 expand, thereby forming the shape of the reserved hole. When it is necessary to remove the reserved device, the gas inside the rubber airbag 1 can be released through the control valve 8. At this time, the volume of the rubber airbag 1 becomes smaller, thereby reducing the adhesion and pressure with the reserved hole concrete, ensuring the structural integrity of the reserved hole and the ease of removal of the reserved device in the concrete floor slab.

[0030] Please see Figures 2 to 4 As shown, two sets of sliding plates 4 are slidably installed on the side of the two connecting plates 2 that are close to each other, along the radial direction of the connecting plates 2. Each set of sliding plates 4 has multiple sliding plates along the circumference of the rubber airbag 1. Sliding grooves 6 for sliding plates 4 to slide are correspondingly opened on the side of the two connecting plates 2 that are close to each other along the radial direction of the connecting plates 2. Preferably, a limiting plate 5 is fixedly connected to the side of the two sets of sliding plates 4 that are close to each other. The surface of the limiting plate 5 relative to the side of the connecting plate 2 is fixedly connected to the inner wall of the rubber airbag 1. It should be noted that in this embodiment, each set of sliding plates 4 has six sliding plates along the circumference of the rubber airbag 1, and six corresponding sliding grooves 6 are also opened. Furthermore, a reinforcing plate 13 is fixedly installed on the side of the two sets of sliding plates 4 that are close to each other. The side of each reinforcing plate 13 away from the connecting plate 2 is fixedly connected to the inner wall of the limiting plate 5. The reinforcing plate 13 can increase the firmness between the sliding plate 4 and the limiting plate 5, making it less likely for the sliding plate 4 and the limiting plate 5 to loosen, thus ensuring the cooperation effect between the sliding plate 4 and the limiting plate 5.

[0031] Furthermore, a reinforcing rib 12 is telescopically installed between two adjacent limiting plates 5 along the circumference of the connecting plate 2. The surface of the reinforcing rib 12 relative to one side of the connecting plate 2 is fixedly connected to the inner wall of the rubber airbag 1. In this embodiment, the reinforcing rib 12 is made of rubber, and three rubber reinforcing ribs 12 are provided between two adjacent limiting plates 5 along the length direction of the rubber airbag 1. The rubber reinforcing ribs 12, together with the limiting plates 5, can further support the rubber airbag 1, so that the rubber airbag 1 can better maintain the shape of the reserved hole, and at the same time will not affect the normal contraction of the rubber airbag 1 when it deflates.

[0032] Furthermore, in this embodiment, reinforcing plates 13 are fixedly installed on the sides of the two sets of sliding plates 4 that are close to each other. The side of each reinforcing plate 13 away from the connecting plate 2 is fixedly connected to the inner wall of the limiting plate 5. The reinforcing plates 13 can increase the firmness between the sliding plates 4 and the limiting plates 5, making it less likely for the sliding plates 4 and the limiting plates 5 to loosen, thus ensuring the cooperation effect between the sliding plates 4 and the limiting plates 5.

[0033] Please see Figure 3 and Figure 4As shown, a telescopic rod 17 is radially and retractably installed inside the sliding groove 6 along the connecting plate 2. Both ends of the telescopic rod 17 are fixedly connected to the sliding plate 4 and the inner wall of the sliding groove 6, respectively, along the telescopic direction. A connecting spring 7 is also provided around the telescopic rod 17. The telescopic rod 17 restricts the telescopic direction of the connecting spring 7, preventing it from shifting and ensuring the effective use of the connecting spring 7.

[0034] The working principle of this invention, the quick-removal pre-installation device for concrete floor slab openings, includes:

[0035] In use, first connect the air pump 3 to the power supply. When it is necessary to use this device to form a pre-drilled hole in a concrete floor slab, simply use the air pump 3 to supply gas into the rubber airbag 1, causing it to expand. The expansion of the rubber airbag 1 can drive the limiting plate 5 and the sliding plate 4 to move outward, thereby stretching the connecting spring 7 to generate tension. At the same time, the limiting plate 5 and the rubber reinforcing rib 12 can limit the upper limit of the expansion of the rubber airbag 1, thus forming the shape of the pre-drilled hole. When it is necessary to remove it from the concrete floor slab, simply operate the control valve 8 manually to release the gas inside the rubber airbag 1. After the gas is released, the elastic force provided by the connecting spring 7, in conjunction with the sliding plate 4 and the limiting plate 5, can pull the rubber airbag 1 inward, making the inner diameter of the rubber airbag 1 smaller and separating it from the inner wall of the pre-drilled hole. This greatly reduces the adhesion and pressure with the pre-drilled hole, making it easier to pull the device outward and preventing excessive adhesion to concrete. This effectively ensures the structural integrity of the pre-drilled hole and the ease of removal of the pre-drilled hole in the concrete floor slab.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A pre-installed device for rapid removal of openings in concrete floor slabs, characterized in that, The system includes a rubber airbag for abutting against the inner wall of a pre-drilled hole in a concrete floor slab. The rubber airbag has openings at both ends along its length, and two connecting discs are fixedly mounted on each end. At least one connecting disc has an air pump on its surface opposite the rubber airbag. The outlet end of the air pump passes through at least one connecting disc and extends into the interior of the rubber airbag. Two sets of sliding plates are slidably mounted radially on the sides of the two connecting discs that are close to each other. Each set of sliding plates has multiple plates evenly distributed along the circumference of the rubber airbag. The sides of the multiple sliding plates opposite the connecting discs are fixedly connected to the inner wall of the rubber airbag. A limiting plate is connected, and the surface of the limiting plate on one side of the connecting plate is fixedly connected to the inner wall of the rubber airbag. A reinforcing rib is telescopically installed between two adjacent limiting plates along the circumference of the connecting plate. The surface of the reinforcing rib on one side of the connecting plate is fixedly connected to the inner wall of the rubber airbag. A sliding groove for the sliding plate to slide is opened on the radial side of the two connecting plates that are close to each other. A telescopic rod is telescopically installed in the sliding groove along the radial side of the connecting plate. The two ends of the telescopic rod along the telescopic direction are fixedly connected to the sliding plate and the inner wall of the sliding groove, respectively. A connecting spring is provided around the telescopic rod. Gas is pumped into the rubber airbag by the air pump, causing it to expand. The expansion of the rubber airbag causes the limiting plate and the sliding plate to move outward, thereby stretching the connecting spring to generate tension. At the same time, the limiting plate and the reinforcing rib can limit the upper limit of the expansion of the rubber airbag.

2. The quick-removal pre-installed device for concrete floor slab openings as described in claim 1, characterized in that: Two fixing plates are fixedly installed on the opposite sides of the two connecting discs, and a handle is fixedly connected between the two fixing plates.

3. The quick-removal pre-installed device for concrete floor slab openings as described in claim 1, characterized in that: An air inlet cover is fixedly installed on one side of the air pump on at least one of the connecting plates. The air inlet end of the air pump passes through the air inlet cover and extends into the interior of the air inlet cover. A plurality of air inlet slots are evenly opened on the outer surface of the air inlet cover.

4. The quick-removal pre-installed device for concrete floor slab openings as described in claim 3, characterized in that: At least one of the connecting discs is fixedly connected to a control valve on the side opposite to the rubber airbag.

5. The quick-removal pre-installed device for concrete floor slab openings as described in claim 3, characterized in that: At least one of the connecting plates is fixedly mounted with a stabilizing base, and the air pump is fixedly mounted on one side of the stabilizing base relative to at least one of the connecting plates.

6. The quick-removal pre-installed device for concrete floor slab openings as described in claim 1, characterized in that: A sealing ring is fixedly installed at each of the two openings, and the sealing ring is fixedly connected to the connecting plate and the rubber airbag respectively.

Images