Formwork-free plugging trapezoid-section floor hole reserving device

Abstract

The utility model discloses a blocking formwork-erecting-free trapezoidal-section floor hole reserving device which is convenient to use and efficient, a first pipe fitting, a second pipe fitting and a connecting pipe fitting between the first pipe fitting and the second pipe fitting are combined to be used for manufacturing a reserved trapezoidal floor hole, and the reserved shape of the floor hole is changed by changing the reserving mode of the floor hole. When the floor hole is plugged, a formwork does not need to be erected at the bottom of the floor, so that the plugging construction method is optimized, the plugging process is simplified, the plugging difficulty is reduced, and the construction quality is ensured.

Description

Technical field

[0001] The utility model relates to the technical field of building auxiliary tools, in particular to an efficient and convenient pre-reserved device for blocking trapezoidal cross-section floor openings without formwork. [Background Technology]

[0002] In construction projects, many small floor openings need to be sealed, such as those for concrete pump pipes, wire laying holes, and wire ropes for hoisting. Currently, square wooden boxes or round casings are often used to reserve square or round floor openings, which are then sealed after use. However, traditional floor opening sealing processes are complex and require multiple operations, including cleaning the opening, supporting the bottom formwork, pouring concrete, maintaining the formwork, removing the formwork, and cleaning. Furthermore, construction quality is difficult to guarantee and is prone to problems such as leakage and cracks.

[0003] Prior art, Chinese Utility Model Publication No. CN219011937U discloses a mold for quickly and easily sealing pre-reserved openings in floor slabs. This mold utilizes an inverted tapered shape, reducing the number of formwork support steps required when reserving openings. However, after the concrete has finally set, the mold is removed using a lifting ring. Once the reserved opening is complete, the formwork is then supported using a bottom support and pre-embedded steel bars. [Utility Model Content]

[0004] The purpose of the utility model is to provide a trapezoidal cross-section floor opening reservation device for blocking and not requiring formwork, so as to solve the problem that the current blocking process of small floor openings is complicated, multiple bottom formwork operations are required, and the construction quality is difficult to guarantee.

[0005] The utility model is realized by the following technical solutions:

[0006] A device for preserving a trapezoidal cross-section floor opening for blocking formwork-free operation includes a first pipe fitting for forming the upper portion of the trapezoidal cross-section floor opening and a second pipe fitting for forming the lower portion of the trapezoidal cross-section floor opening. A connecting pipe fitting for connecting the first and second pipe fittings is provided between the first and second pipe fittings, and the outer contour of the second pipe fitting is smaller than the outer contour of the first pipe fitting.

[0007] In the aforementioned device for blocking a trapezoidal cross-section floor opening without formwork support, the first pipe member (1) and the second pipe member (2) are both circular pipe members.

[0008] In the above-mentioned trapezoidal cross-section floor opening reservation device for blocking formwork-free trapezoidal cross-section floor openings, the diameter of one end of the connecting pipe (3) is equal to the diameter of the first pipe (1), and the diameter of the other end of the connecting pipe (3) is equal to the diameter of the second pipe (2).

[0009] In the above-mentioned trapezoidal cross-section floor opening reservation device for blocking formwork-free trapezoidal cross-section floor openings, the first pipe fitting (1) and the second pipe fitting (2) are both square pipe fittings.

[0010] In the above-mentioned trapezoidal cross-section floor opening reservation device for blocking formwork-free trapezoidal cross-section floor openings, the connecting pipe (3) is a tapered pipe.

[0011] In the above-mentioned device for blocking a trapezoidal cross-section floor opening reservation without formwork support, the first pipe fitting, the second pipe fitting, and the connecting pipe fitting are all seamless steel pipes.

[0012] As described above, a trapezoidal cross-section floor opening reservation device for blocking formwork-free trapezoidal cross-section floor openings is provided on the inner wall of the first pipe member with a lifting lug for moving the reservation device and separating the floor and the device.

[0013] In the above-mentioned reserved device for blocking a trapezoidal cross-section floor opening without formwork support, the lifting lug is C-shaped.

[0014] As described above, a trapezoidal cross-section floor opening reservation device for blocking formwork-free trapezoidal cross-section floor openings, the lifting lug is provided with a detachable pulling component for lifting the reservation device, and the pulling component is T-shaped.

[0015] In the above-mentioned device for preserving trapezoidal-section floor openings for blocking formwork-free operation, a detachable connecting assembly is provided between the lifting lug and the lifting assembly.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model proposes a pre-reserved device for sealing trapezoidal-section floor openings that does not require formwork. First, a first pipe fitting, a second pipe fitting, and a connecting pipe fitting therebetween are used to create a reserved trapezoidal floor opening. Compared to square or circular openings, a trapezoidal opening can achieve the same opening area using less material, thereby improving space utilization and saving material costs. The trapezoidal opening design provides greater structural stability, thereby distributing the load. This design also simplifies the sealing process, reduces construction steps, saves construction time, and thus improves construction efficiency. When sealing a trapezoidal opening, a precast concrete block is used as the sealing base. The shape of the precast block is consistent with the shape formed by the second pipe fitting and the connecting pipe fitting. The precast blocks can be standardized and mass-produced, significantly improving production and installation efficiency, shortening the construction period, and thus saving labor costs. Next, expansive cement is used in the gap between the openings to better integrate the precast blocks with the floor slab surrounding the openings, thereby improving waterproofing and reducing the risk of water seepage. Then, a secondary pouring of micro-expansive concrete is used to fill the interior of the first pipe fitting, eliminating the need for formwork at the bottom of the floor slab, simplifying the sealing process. Second, the first pipe fitting, the second pipe fitting, and the connecting pipe fitting can be welded together using pipes of different specifications to meet the requirements of trapezoidal floor openings of different sizes, thereby enhancing the adaptability of the device, improving construction efficiency, and ensuring construction quality. Third, when in use, a release agent is applied to the outer surface of the device, allowing the device to be recycled after use for easy reuse, reducing material waste and thus saving costs. Secondly, the first pipe is provided with a lifting ear for moving the device and separating the floor and the device. The lifting ear provides a sturdy gripping point, so that construction workers can install the reserved device more quickly and position the device more accurately. In addition, the lifting ear is provided with a pulling assembly, which is combined with the lifting ear to lift the device, so that construction workers can operate the device more easily and better adjust the position of the device, so as to better separate the device from the floor structure for reuse. Compared with the traditional reserved sleeves in the floor openings, it is more cost-effective. The pulling assembly is a detachable handle, which is convenient for carrying, installation, disassembly and storage, and handles of different lengths or shapes can be selected according to actual conditions, so as to be used with devices of various sizes.

[0018] The utility model provides a trapezoidal cross-section floor opening reservation device for blocking formwork-free, convenient and efficient use. By changing the method and shape of the floor opening reservation, it is possible to eliminate the need for formwork at the bottom of the floor when blocking the floor opening, thereby optimizing the blocking construction method, simplifying the blocking process, reducing the blocking difficulty, and ensuring construction quality. The utility model solves the current problem of complicated blocking procedures for small floor openings, requiring multiple bottom formwork operations, and making it difficult to ensure construction quality.

Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the first pipe fitting, the second pipe fitting and the connecting pipe fitting of Example 1;

[0022] Figure 3 Schematic diagram of the construction structure of the embodiment. [Specific implementation method]

[0023] The following is combined with Figure 1-3 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Example 1:

[0025] Figure 1-2 The device shown is a pre-set device for sealing trapezoidal cross-section floor openings without formwork, comprising a first pipe fitting 1 for forming the upper portion of the trapezoidal cross-section floor opening and a second pipe fitting 2 for forming the lower portion of the trapezoidal cross-section floor opening. A connecting pipe fitting 3 for connecting the first pipe fitting 1 and the second pipe fitting 2 is provided between the second pipe fitting 2 and the first pipe fitting 1. The outer contour of the second pipe fitting 2 is smaller than the outer contour of the first pipe fitting 1. The trapezoidal opening shape is composed of the first pipe fitting, the second pipe fitting and the connecting pipe fitting. The trapezoidal opening shape helps to disperse the load and improve the utilization and functionality of the space, thereby saving material costs. Secondly, the device can select welding combinations of first pipe fittings, second pipe fittings and connecting pipe fittings of different specifications to meet the needs of different floor slabs.

[0026] Furthermore, the first pipe fitting (1) and the second pipe fitting (2) are both circular pipe fittings.

[0027] Furthermore, the diameter of one end of the connecting pipe (3) is equal to the diameter of the first pipe (1), and the diameter of the other end of the connecting pipe (3) is equal to the diameter of the second pipe (2).

[0028] Furthermore, the first pipe member 1, the second pipe member 2, and the connecting pipe member 3 are all seamless steel pipes. Compared with other types of steel pipes, seamless steel pipes have higher strength and corrosion resistance, and are more reliable and safer. Secondly, seamless steel pipes are light in weight, making the device easy to carry, thereby reducing the burden on construction workers.

[0029] Furthermore, the first pipe fitting 1 is a D159 seamless steel pipe, and the second pipe fitting 2 is a D219 seamless steel pipe.

[0030] Furthermore, the first pipe fitting 1 and the second pipe fitting 2 are pipe fittings for conveying fluids, and the connecting pipe fitting 3 is a butt-welded seamless reducer. Pipe fittings for conveying fluids have high pressure bearing capacity, good fluid conveying performance, and a long service life; butt-welded seamless reducers have high strength, good durability, and good sealing properties.

[0031] Furthermore, the inner wall of the first pipe 1 is provided with a lifting lug 4 for moving the reserved device and separating the floor slab from the device. The lifting lug is provided on the inner wall of the first pipe, which not only facilitates the use of the device by construction workers, but also ensures that it does not affect the normal use of the device, keeps the outer surface of the device smooth, and improves the sealing quality.

[0032] Furthermore, the lifting lug 4 is C-shaped. This C-shaped lifting lug provides a stable lifting point, ensuring that the device does not easily swing left or right during movement. The lifting lug 4 can also be S-shaped, cylindrical, etc. The design of the lifting lug can be adjusted to suit different construction requirements to accommodate various sizes and shapes of reserved devices, thereby improving the applicability of the device in different engineering projects.

[0033] Furthermore, the lifting lugs 4 are equipped with a detachable lifting assembly 5 for lifting the reserved device. The lifting assembly 5 is T-shaped. This detachable lifting assembly facilitates portability, installation, removal, and storage. It can be configured with handles of varying lengths and shapes, depending on the specific conditions and needs of the construction worker. This allows for use with a variety of devices of varying sizes while reducing the risk of workplace injuries. Furthermore, the lifting assembly 5 can also be shaped like an inverted J or cylindrical, allowing its design to be adjusted to the needs of construction workers, thereby reducing their burden and improving their efficiency.

[0034] Furthermore, the lifting assembly 5 is formed by welding a galvanized wire rod and a galvanized steel pipe. The galvanized material has high strength, good corrosion resistance and long service life.

[0035] Furthermore, a detachable connecting component 6 is provided between the lifting ear 4 and the lifting component 5 .

[0036] Furthermore, the connecting assembly 6 includes a nut and a gasket.

[0037] Furthermore, the lifting ear 4 is provided with a circular connecting hole for connecting to the lifting assembly 5 .

[0038] Furthermore, the lifting assembly 5 is fixedly connected to the connecting assembly 6 at the center of the upper surface of the lifting ear 4 through the circular connecting hole. The lifting assembly is arranged at the center of the lifting ear, which helps to improve the stability, flexibility and portability of the operation, helps to maintain the balance of the lifting ear, and reduces the swing caused by the imbalance of torque.

[0039] Example 2:

[0040] The difference between Example 2 and Example 1 is that:

[0041] Furthermore, the first pipe fitting (1) and the second pipe fitting (2) are both square pipe fittings.

[0042] Furthermore, the connecting pipe (3) is a tapered pipe.

[0043] The construction method of the utility model:

[0044] First, when reserving a floor opening, a release agent is applied to the outer surface of the device to facilitate separation from the floor during subsequent operations. When sealing the trapezoidal opening, a precast concrete block 100 is used as the sealing base. The shape of the precast block 100 matches the shape of the second pipe 2 and the connecting pipe 3. Next, expansive cement 200 is used to fill the gap in the opening, ensuring a better bond between the precast block 100 and the floor 400 surrounding the opening. Finally, a secondary pour of slightly expansive concrete 300 is used to fill the interior of the first pipe 1, eliminating the need for formwork at the bottom of the floor 400 to complete the sealing.

[0045] The utility model provides a trapezoidal cross-section floor opening reservation device for blocking formwork-free, convenient and efficient use. By changing the method and shape of the floor opening reservation, it is possible to eliminate the need for formwork at the bottom of the floor when blocking the floor opening, thereby optimizing the blocking construction method, simplifying the blocking process, reducing the blocking difficulty, and ensuring construction quality. The utility model solves the current problem of complicated blocking procedures for small floor openings, requiring multiple bottom formwork operations, and making it difficult to ensure construction quality.

[0046] The above descriptions are provided in conjunction with specific content, and do not necessarily limit the specific implementation of this utility model to these descriptions. Furthermore, due to differences in industry nomenclature, this description does not limit the specific implementation of this utility model to the above nomenclature, nor does it limit the specific implementation of this utility model to English nomenclature. Any similarity or similarity to the methods, structures, etc. of this utility model, or any technical deduction or substitution based on the concept of this utility model, shall be considered within the scope of protection of this utility model.

Claims

1. A device for blocking a trapezoidal cross-section floor opening without formwork, characterized in that: The invention comprises a first pipe fitting (1) for forming the upper portion of a trapezoidal cross-section floor opening and a second pipe fitting (2) for forming the lower portion of a trapezoidal cross-section floor opening, wherein a connecting pipe fitting (3) for connecting the first pipe fitting (1) and the second pipe fitting (2) is provided between the second pipe fitting (2) and the first pipe fitting (1), and the outer contour of the second pipe fitting (2) is smaller than the outer contour of the first pipe fitting (1).

2. The device for blocking a trapezoidal cross-section floor opening without formwork according to claim 1, characterized in that: The first pipe fitting (1) and the second pipe fitting (2) are both circular pipe fittings.

3. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 2, characterized in that: The diameter of one end of the connecting pipe (3) is equal to the diameter of the first pipe (1), and the diameter of the other end of the connecting pipe (3) is equal to the diameter of the second pipe (2).

4. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 1, characterized in that: The first pipe fitting (1) and the second pipe fitting (2) are both square pipe fittings.

5. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 4, characterized in that: The connecting pipe fitting (3) is a tapered pipe fitting.

6. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 1, characterized in that: The first pipe fitting (1), the second pipe fitting (2) and the connecting pipe fitting (3) are all seamless steel pipes.

7. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 1, characterized in that: The inner wall of the first pipe (1) is provided with a lifting lug (4) for moving the reserved device and separating the floor slab from the device.

8. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 7, characterized in that: The lifting lug (4) is C-shaped.

9. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 7, characterized in that: The lifting lug (4) is provided with a detachable lifting assembly (5) for lifting the reserved device, and the lifting assembly (5) is T-shaped.

10. The device for blocking a trapezoidal cross-section floor opening without formwork support according to claim 9, characterized in that: A detachable connecting component (6) is provided between the lifting lug (4) and the lifting component (5).

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