A device for sealing a reserved hole of a cast-in-place floor

Abstract

The utility model discloses a device for the pouring floor slab reserved hole plugging, include: formwork, for the pouring forming of floor slab, a plurality of embedded parts, for the overall gradually contractive shape of upper end portion to lower end portion, for setting in the upper end surface of formwork, make the floor slab of pouring completion form a plurality of reserved holes, and the reserved hole is the taper hole, a plurality of fixed components are used for fixing each embedded part, a plurality of plugging parts are used for sealing and filling in the bottom of each reserved hole. The device overcomes the problem of high-altitude edge operation and eliminates the danger brought by high-altitude operation. Under the premise of fully ensuring the safety of construction personnel, each reserved hole of the floor slab can be standardized, high-quality and high-efficiently completed plugging, achieving the technical effects of reducing the labor intensity of construction personnel, improving construction efficiency, ensuring construction quality and accelerating construction progress. Ultimately, the purpose of improving enterprise market competitiveness, improving enterprise economic benefits and promoting healthy development of enterprises is realized.

Description

Technical Field

[0001] This utility model application belongs to the field of construction technology of cast-in-place floor slabs, and specifically relates to a device for sealing reserved holes in cast-in-place floor slabs. Background Technology

[0002] During the pouring of floor slabs on the outer side of a building, holes are typically reserved in the slab for fixed connection with the climbing scaffold supports. After the formwork for this floor is removed and the climbing scaffold is raised, support frames and formwork are erected to seal the reserved holes. The sealing work usually involves multiple steps and wet operations. Especially when sealing reserved holes in the staggered balcony slabs of fourth-generation buildings, there are situations where the distance between floor slabs exceeds 6 meters, which is both dangerous and inefficient.

[0003] In the existing technology, the specific sealing process is as follows: formwork support frame → formwork support → hole enlargement → layered filling of waterproof mortar (often mixed with expansion agent) and compaction → curing → external waterproofing reinforcement → demolding.

[0004] Overall, this sealing process has the following limitations:

[0005] 1. High dependence on high-altitude operations and high safety risks: The bolt hole locations of many staggered balconies require the construction of high-altitude work platforms or scaffolding for sealing operations, which increases safety risks and the cost of measures.

[0006] 2. Quality stability is difficult to guarantee: Layered filling mortar relies heavily on the worker's skill and sense of responsibility. The degree of compaction and density are not easy to be uniform, which can easily lead to hidden dangers such as incomplete filling and shrinkage cracking.

[0007] 3. The process is complicated and the efficiency is low: it requires multiple filling and compaction, and there needs to be a certain time interval between each layer, resulting in low overall efficiency.

[0008] Therefore, there is an urgent need to design a device for floor slab pouring construction to ensure that construction workers can operate in a sufficiently safe environment and to seal the reserved holes in the floor slab. Furthermore, it should overcome the challenges of working at heights, enabling all reserved holes to be sealed in a standardized, high-quality, and efficient manner. This would reduce the workload of construction workers, improve construction efficiency, ensure construction quality, and accelerate the construction progress, ultimately enhancing the company's market competitiveness, increasing its economic benefits, and promoting its healthy development. Utility Model Content

[0009] This utility model application discloses a device for sealing reserved holes in poured floor slabs, in order to solve the problems existing in the prior art.

[0010] To achieve the above objectives, this utility model provides a device for sealing pre-reserved holes in cast floor slabs, comprising: a template for casting and shaping the floor slab;

[0011] If the embedded parts are to be installed, the embedded parts are in a shape that gradually tapers from the top to the bottom. They are used to set on the upper surface of the formwork to form several reserved holes in the poured floor slab. The reserved holes are tapered holes. Several fixing components are used to install on the formwork to fix each embedded part. Several sealing parts are used to seal and fill the bottom of each reserved hole. The height is less than the diameter and depth of the reserved hole.

[0012] Furthermore, the embedded part is a barrel-shaped structure with an open top, including an upper port and a bottom surface, and the diameter of the upper port is larger than the diameter of the bottom surface.

[0013] Furthermore, the bottom surface of the embedded part has through holes; the template has several mounting holes that match the through holes.

[0014] Furthermore, the fixing components include: a connecting rod for installing the embedded part on the template and passing through the through hole and the mounting hole; a limiting member for being installed on the connecting rod and abutting against the upper end of the bottom surface of the embedded part; and a fastener for being installed on the connecting rod and abutting against the lower end surface of the template.

[0015] Furthermore, the connecting rod is a screw; the limiting component and the fastener are both nuts, and are threaded onto the connecting rod.

[0016] Furthermore, the connecting rod is a screw; the limiting component is a nut, which is fixed on the connecting rod; and the fastener is a nut, which is threaded onto the connecting rod.

[0017] Furthermore, the embedded part has a frustum structure, and the sealing part has a corresponding frustum structure.

[0018] Furthermore, the compressive strength of the sealing component is above 40 MPa.

[0019] The advantages and positive effects of this utility model are:

[0020] 1. The device for sealing pre-reserved holes in cast-in-place floor slabs disclosed in this utility model application completes the casting and final sealing of the cast-in-place floor slab by erecting a template and setting up a number of embedded parts, fixing components, and sealing parts on the template. This device has the following advantages:

[0021] ① Improved efficiency: Single-hole operation time is controlled within 15 minutes;

[0022] ② Cost optimization: No secondary formwork is required, saving manpower and material resources;

[0023] ③ Safety guarantee: Eliminate high-altitude operations, especially high-altitude operations near edges, and reduce the risk of accidents to 0.

[0024] In summary, this device completely overcomes the difficulties of working near high-altitude edges and eliminates the dangers associated with such work. While ensuring the safety of construction personnel, it enables the standardized, high-quality, and efficient sealing of every reserved hole in the floor slab. This achieves the technical effects of reducing the workload of construction personnel, improving construction efficiency, ensuring construction quality, and accelerating construction progress. Ultimately, it aims to enhance the company's market competitiveness, improve its economic benefits, and promote its healthy development.

[0025] 2. The device for sealing reserved holes in the pouring of floor slabs disclosed in this utility model application uses a template (usually an aluminum template) to open and position the holes, ensuring that the position of the embedded parts on each floor is accurate and efficient, and meeting the requirements for the installation of the climbing formwork support.

[0026] 3. The device for sealing reserved holes in the pouring of floor slabs disclosed in this utility model application uses a screw to connect the template and the embedded parts, and nuts are threaded on both ends of the screw to firmly install the embedded parts on the template.

[0027] 4. The device for sealing reserved holes in floor slabs disclosed in this utility model application uses a screw to connect the template and the embedded part, and a nut as a limiting member is fixed on the screw. The screw is then passed through the through hole of the embedded part to house the limiting member inside the embedded part. Finally, the nut as a fastener is threaded onto the screw, thus reliably fixing the embedded part to the template. This design further facilitates the operation of construction personnel and greatly improves construction efficiency.

[0028] 5. The device for sealing reserved holes in the pouring floor slab disclosed in this utility model application allows the installation and removal of embedded parts to be carried out simultaneously with the main building formwork, so that only the embedded parts used for one floor need to be purchased to meet the needs of the entire building.

[0029] 6. The device for sealing reserved holes in cast-in-place floor slabs disclosed in this utility model application has a compressive strength of 40MPa for the sealing component, making the device applicable to the construction of most floor slabs.

[0030] 7. The technical solution disclosed in this utility model application has the advantages of simple structure, detachability, firm connection, stable performance, easy installation, easy manufacturing, safety and reliability, reduced manpower, and improved efficiency. Attached Figure Description

[0031] Figure 1 This is a perspective view of the template in a device for sealing reserved holes in poured floor slabs, as provided in this utility model application.

[0032] Figure 2 This is a schematic diagram of the fixing component in a device for sealing reserved holes in poured floor slabs, as provided in this utility model application.

[0033] Figure 3This is a schematic diagram of the embedded part in a device for sealing reserved holes in poured floor slabs, as provided in this utility model application.

[0034] Figure 4 This is a schematic diagram of the connection between the embedded part and the fixing component in this utility model application;

[0035] Figure 5 This is a perspective view of a sealing component in a device for sealing reserved holes in poured floor slabs, as provided in this utility model application.

[0036] Figure 6 This is a construction diagram of the fixed components;

[0037] Figure 7 It is a 3D view of the floor slab after it has been poured and formed;

[0038] Figure 8 It is a sectional view of the reserved opening in the floor slab;

[0039] Figure 9 This is a schematic diagram of the floor slab after its final construction.

[0040] Explanation of reference numerals in the attached figures

[0041] 1. Template; 101. Mounting hole; 2. Connecting rod; 3. Limiting component; 4. Fastener; 5. Embedded part; 501. Through hole; 6. Sealing component; 7. Floor slab; 701. Reserved hole. Detailed Implementation

[0042] The specific embodiments of this utility model application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this disclosure.

[0043] In the technical solutions disclosed in this utility model application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to those defined based on the drawing direction of the corresponding figures, while "inner" and "outer" refer to those inside and outside relative to the outline of the component or structure itself. Furthermore, in the description of the accompanying drawings, the same reference numerals in different figures denote the same elements.

[0044] According to this utility model application, a device for sealing pre-reserved holes in cast-in-place floor slabs is provided, such as... Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, it includes:

[0045] Template 1 is used for casting and shaping floor slab 7;

[0046] If the embedded part 5 is interfered with, the embedded part 5 has a gradually tapering shape from the upper end to the lower end, and is used to set on the upper surface of the template 1, so that a number of reserved holes 701 are formed on the poured floor slab 7. The reserved holes 701 are tapering holes.

[0047] Several fixing components are used to install on the template 1 to fix each embedded part 5;

[0048] Several sealing components 6, with a height less than the diameter and depth of the reserved holes 701, are used to seal and fill the bottom of each reserved hole 701.

[0049] In the above technical solution, embedded parts 5 are set at corresponding positions in the template 1, and the embedded parts 5 are firmly fixed using fixing components. Then, the floor slab concrete is poured. After the floor slab concrete has cured to the required strength, the template 1 and template support frame are removed. At this time, several reserved holes 701 are formed on the floor slab 7. The reserved holes 701 are usually used to install diagonal bracing pipes and connect with the climbing frame. Since the embedded parts 5 have a gradually tapering shape from the upper end to the lower end, the reserved holes 701 are corresponding tapering holes. After the construction of this floor is completed, the diagonal bracing rods between the floor slab 7 and the climbing frame are removed, and the climbing frame is lifted. At this time, the excess reserved holes 701 are sealed. The shape of the sealing parts 6 matches the bottom space structure of the reserved holes 701. Each sealing part 6 is filled into the bottom of the corresponding reserved hole 701. Because of the tapering structure of the reserved hole 701 from top to bottom, the sealing parts 6 can be firmly filled into the bottom of the reserved hole 701. Then, the remaining space in the reserved hole 701 is fully filled. During the filling process, the sealing component 6 serves as a bottom support, which is equivalent to supporting the template 1, so that the on-site construction personnel do not need to erect a second template support frame, simplifying the construction steps and eliminating safety risks; the sealing component 6 itself is also used as part of the filling slurry of the reserved hole 701 and is filled at the bottom of the reserved hole 701.

[0050] Specifically, the sealing component 6 is a precast mortar cone-shaped plug made of micro-expansion cement-based composite material, with a height approximately 50% of the thickness of the floor slab 7, and can be prefabricated in a factory. During construction, the sealing component 6 is inserted after being dipped in mortar, ensuring its bottom is flush with the bottom of the floor slab 7; no bottom support is required during this process. It is worth noting that this device is suitable for filling pre-drilled holes in various floor slabs, especially suitable for locations where construction is inconvenient, such as staggered balconies, high-altitude areas, and near edges.

[0051] In this embodiment, such as Figure 3 As shown, the embedded part 5 is a barrel-shaped structure with an open top, including an upper port and a bottom surface, with the diameter of the upper port being larger than the diameter of the bottom surface. The hollow internal structure design reduces the production cost of the embedded part 5 and facilitates its transport and installation.

[0052] In some implementations, such as Figure 1 , Figure 3 As shown, the bottom surface of the embedded part 5 has a through hole 501; the template 1 has several mounting holes 101 that match the through hole 501. Furthermore, as... Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, the fixing components include:

[0053] The connecting rod 2 is used to install the embedded part 5 on the template 1 and is inserted into the through hole 501 and the mounting hole 101;

[0054] Limiting component 3 is used to be installed on connecting rod 2 and abuts against the upper end of the bottom surface of embedded component 5;

[0055] Fastener 4 is used to be installed on connecting rod 2 and abuts against the lower end face of template 1.

[0056] In some specific implementations, the following embodiments may be included:

[0057] Example (1)

[0058] like Figure 2 , Figure 4 , Figure 6 As shown, connecting rod 2 is a screw rod;

[0059] Both the limiting component 3 and the fastener 4 are nuts, and both are threaded onto the connecting rod 2.

[0060] Example (2)

[0061] The connecting rod 2 is a screw rod, which is not shown in the attached diagram of the instruction manual.

[0062] The limiting component 3 is a nut, which is fixedly installed on the connecting rod 2;

[0063] Fastener 4 is a nut, which is threaded onto connecting rod 2.

[0064] In other implementation methods, such as Figure 3 , Figure 5 As shown, the embedded part 5 has a frustum-shaped structure, and the sealing part 6 has a corresponding frustum-shaped structure. In fact, the embedded part 5 and the sealing part 6 can be either an inverted frustum or an inverted pyramid, that is, there is no specific limitation on their cross-sectional area.

[0065] In other embodiments, the compressive strength of the sealing element 6 is designed to be above 40 MPa.

[0066] This utility model application exemplarily describes the steps of using this device, as follows:

[0067] S1. Erect the support frame of template 1, set the embedded parts 5, and use fixing components to fix the embedded parts 5 firmly;

[0068] S2. Grout is poured into template 1. After the floor slab 7 is cured, the fixing components, embedded parts 5, template 1 and support frame are removed to form the reserved hole 701 (the diameter of the reserved hole 701 under the slab is 30mm; the diameter of the hole on the slab is 40mm, so as to meet the bolt installation).

[0069] S3. After the construction of this floor is completed and the climbing scaffold is lifted, the interior of the reserved opening 701 shall be cleaned first.

[0070] S4. Insert the sealing part 6 after dipping it in grout, making it flush with the bottom of the floor slab 7 (the sealing part 6 is made of micro-expansion cement-based composite material; the expansion rate is 0.02-0.04%; the dimensions are: height 50mm, taper 1:15, compressive strength ≥40MPa; the interface treatment is: water-repellent cement grout coating (thickness 0.5-1mm)).

[0071] S5. Grout the upper part of the reserved hole 701 to a height of 50mm;

[0072] S6. Finally, smooth the surface, treat the seams, and apply a waterproof coating.

[0073] The preferred embodiments of this utility model application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the disclosed technical concept, various simple modifications can be made to the technical solution of this utility model application, and these simple modifications all fall within the protection scope of this application.

[0074] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0075] Furthermore, various different embodiments of this utility model application can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this utility model application.

Claims

1. A device for sealing pre-reserved holes in cast-in-place floor slabs, characterized in that, include: Template (1) is used for casting and shaping the floor slab (7); If the embedded part (5) is used, the embedded part (5) is a shape that gradually tapers from the upper end to the lower end, and is used to set on the upper surface of the template (1) so that a number of reserved holes (701) are formed on the floor slab (7) after it is poured. The reserved holes (701) are tapered holes. The embedded part (5) is a barrel-shaped structure with an open upper end, including an upper port and a bottom surface, and the diameter of the upper port is larger than the diameter of the bottom surface. The bottom surface of the embedded part (5) has a through hole (501). The template (1) has a number of mounting holes (101) that match the through hole (501). Several fixing components are used to install on the template (1) to fix each of the embedded parts (5); including: a connecting rod (2) for installing the embedded parts (5) on the template (1) and passing through the through hole (501) and the mounting hole (101); a limiting member (3) for installing on the connecting rod (2) and abutting against the upper end of the bottom surface of the embedded part (5); and a fastener (4) for installing on the connecting rod (2) and abutting against the lower end surface of the template (1); Several sealing elements (6), with a height less than the diameter of the reserved hole (701), are used to seal and fill the bottom of each of the reserved holes (701).

2. The device for sealing pre-reserved holes in cast-in-place floor slabs according to claim 1, characterized in that: The connecting rod (2) is a screw; Both the limiting member (3) and the fastener (4) are nuts, and both are threaded onto the connecting rod (2).

3. The device for sealing pre-reserved holes in cast-in-place floor slabs according to claim 1, characterized in that: The connecting rod (2) is a screw; The limiting component (3) is a nut, which is fixedly installed on the connecting rod (2); The fastener (4) is a nut, which is threaded onto the connecting rod (2).

4. The device for sealing pre-reserved holes in cast-in-place floor slabs according to claim 1, characterized in that: The embedded part (5) is a frustum structure, and the sealing part (6) is a corresponding frustum structure.

5. The device for sealing pre-reserved holes in cast-in-place floor slabs according to claim 1, characterized in that: The compressive strength of the sealing component (6) is above 40 MPa.

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