Post-cast strip pouring blocking air bag assembly
By introducing detachable vertical and horizontal plate structures into the airbag assembly and fixing them with clips and buckles, the problem of airbag deformation during concrete pouring is solved, thus improving the airbag's support performance and stability.
Patent Information
- Application Number
- CN202520475310.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing airbag-type blocking methods have limited load-bearing capacity during concrete pouring, are prone to deformation, leading to concrete exposure, and have complex structures and high costs.
A post-cast strip pouring blocking airbag assembly is designed, which adopts a detachable vertical and horizontal plate structure and is fixed by clips and buckles to enhance the support performance of the airbag and prevent deformation.
It effectively avoids the formation of joints, reduces stress, improves the reusability of airbags, ensures the stability of airbags during concrete pouring, and reduces the risk of deformation.
Smart Images

Figure CN223893822U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of auxiliary materials for engineering construction, and in particular relates to a post-pouring strip pouring blocking airbag component. Background Technology
[0002] According to the design principle of strong columns and weak beams, when the concrete strength of beams / slabs and walls differs, they must be poured separately. The walls are poured first, followed by the beams / slabs. Traditional construction methods involve vertically inserting silver-plated wire mesh into the beams to prevent concrete flow. This process requires cutting the silver-plated mesh according to the beam's cross-sectional dimensions before installation, and pre-drilling holes according to the reinforcement arrangement. The mesh is then inserted simultaneously with the stirrups during reinforcement binding. Vertical, dense wire mesh is placed inside the formwork at the junction of the inner and outer walls. Then, the higher-strength side concrete is poured first, followed by the lower-strength side concrete, with the time interval not exceeding the initial setting time of the concrete.
[0003] Existing airbag-type barrier methods utilize multiple strip-shaped airbags joined together, which are then inflated to form a barrier. This method avoids the cumbersome installation of mesh panels and perfectly solves the gap problem caused by horizontally inserted reinforcing bars, while also being relatively low-cost. However, the strip-shaped structure of the airbags has limited load-bearing capacity after inflation. After concrete pouring, the airbags deform due to compression, resulting in exposed concrete at the compression points. Therefore, this invention improves the airbag structure and incorporates a frame structure to enhance the barrier strength and reduce the likelihood of deformation of the airbags under compression. Utility Model Content
[0004] The purpose of this invention is to provide a post-cast strip blocking airbag assembly, which improves the airbag structure and is equipped with a skeleton structure to enhance the blocking strength and reduce the probability of the airbag deforming after being squeezed.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] A post-cast strip pouring blocking airbag assembly includes airbags installed in the post-cast strip area, the airbags being arranged in a row to form a blockage between the corresponding wall groove and beam groove;
[0007] The airbag is detachably fixed with a vertical plate on one side. The vertical plate is a strip-shaped plate structure that extends along the length of the airbag.
[0008] The airbags are arranged in rows, and their corresponding vertical plates are fixed together by horizontal plates. The horizontal plates are detachably installed on the vertical plates and are arranged along the length of the vertical plates.
[0009] Furthermore, the vertical plate has a retaining strip on one side corresponding to the airbag. The retaining strip is an elastic retaining strip that extends along the length of the vertical plate and is arranged parallel to the vertical plate. The airbag has a slot for inserting the retaining strip.
[0010] The locking strip has a connecting portion at the same end as the vertical plate, and the other end of the locking strip has a protrusion extending towards the vertical plate. The protrusion is used to increase the fixing point, to clamp the inside of the slot, and to improve stability.
[0011] Furthermore, the horizontal plate is provided with multiple slots, which are arranged along the length direction of the horizontal plate, and the vertical plate is provided with multiple limiting buckles along the length direction for engaging and fixing with the slots.
[0012] The buckle has a limiting plate, which is circular, and there is a connecting part between the center of the limiting plate and the vertical plate.
[0013] This invention offers the following advantages: it avoids seams at joints, reduces stress, and prevents cracks from forming at the joint later on. It also improves the problem of cross-contamination between high and low grade concrete, and the isolation airbag is simple to operate and has a high reusability rate.
[0014] The weight of concrete can easily widen the gaps between airbags, leading to localized deformation. To prevent the airbags from shifting laterally, horizontal plates are added to secure the vertical plates. This grid-like reinforcement of the horizontal and vertical plates significantly improves the airbags' support performance, making them less prone to deformation even under high-strength support. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0016] Figure 1 : Schematic diagram of the horizontal plate disassembly structure of this utility model.
[0017] Figure 2 : Schematic diagram of the vertical plate disassembly structure of this utility model.
[0018] Figure 3 : Schematic diagram of the structure of this utility model in conjunction with the steel cage.
[0019] Figure 4 : Schematic diagram of the installation position structure of this utility model.
[0020] The components represented by each number in the attached diagram are listed below: airbag 1, vertical plate 2, horizontal plate 3, retaining strip 4, slot 11, protrusion 41, groove 31, buckle 21. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] like Figures 1-4 As shown: A post-pouring strip pouring blocking airbag assembly includes airbags 1 installed in the post-pouring strip area. The airbags 1 are arranged in rows to form a barrier between the wall groove and the beam groove. The post-pouring strip area is located between two adjacent composite slabs. When pouring the composite slab, the bottom is first fully laid with support frames, scaffolding and fasteners, the top is supported by formwork, and a steel reinforcement skeleton is erected on the upper layer of the formwork. Then, concrete is poured, and after the concrete is formed, a composite slab is formed. The area between the composite floor slabs is the post-pouring strip area, which is divided into horizontal and vertical grid grooves. The intersection of the grooves is used to pour concrete to form columns and beams, and the grooves are used for wall beams. According to the design concept of strong column and weak beam, the wall beams are poured first, and the column beams are poured later. The corresponding concrete types are also different. In order to prevent concrete cross-contamination, airbags are arranged in rows between the beam groove and the column groove to block the concrete. The airbags are removed after the concrete has initially dried.
[0023] The airbag 1 is detachably fixed to one side with a vertical plate 2. The vertical plate 2 is a strip-shaped plate structure that extends along the length of the airbag 1. Because concrete is in a fluid state before drying, it is prone to pressing down on the airbag under its own weight, causing adjacent airbags to deform, creating gaps, and exposing the concrete. Therefore, a vertical plate is fixed to one side of the airbag. The airbag itself is a plastic product, which has a certain strength after inflation. Adding the vertical plate improves the lateral support performance, and the airbag will not bend along its length under unidirectional force. The width of the vertical plate is smaller than the cross-sectional diameter of the inflated airbag.
[0024] The airbags 1 are arranged in a row, and their corresponding vertical plates 2 are fixed together by horizontal plates 3. The horizontal plates 3 are detachably installed on the vertical plates 2 and are arranged along the length of the vertical plates 2.
[0025] After the airbags are installed, adjacent airbags fit tightly together. When inflated, the airbags' deformation properties allow the reinforcing steel frame to pass through, effectively encasing it and reducing gaps between adjacent airbags. However, the weight of the concrete can easily widen these gaps, leading to localized deformation. To prevent lateral displacement of the airbags, horizontal plates are added to secure the vertical plates. This grid-like reinforcement of horizontal and vertical plates significantly improves the airbags' support performance, making them less prone to deformation under high-strength support conditions.
[0026] like Figure 2As shown: The vertical plate 2 has a retaining strip 4 on one side corresponding to the airbag 1. The retaining strip 4 is an elastic retaining strip that extends along the length of the vertical plate 2 and is parallel to it. The airbag 4 has a slot 11 for inserting the retaining strip 4. The vertical plate and airbag are detachable for easy storage and transportation. The retaining strip is made of stainless steel and can be easily inserted into the slot after being bent. Its elasticity secures the airbag, preventing it from falling out. The slot is a flexible groove made of the same material as the airbag body. The retaining strip 4 has a connecting part at the same end as the vertical plate 2, and the other end of the retaining strip 4 has a protrusion 41 extending towards the vertical plate 2. The protrusion increases the fixing point and secures the inside of the slot, improving stability. The end of the retaining strip corresponding to the protrusion is a free end, used for insertion along one side of the slot, facilitating disassembly and installation.
[0027] like Figure 1 As shown: The horizontal plate 3 has multiple slots 31 along its length. The vertical plate 2 has multiple locking clips 21 along its length for locking and securing with the slots 31. When installing the horizontal plate, it is inserted through the slots to fix the position of the vertical plate and the horizontal plate. The slots and clips can be freely selected according to the position of the horizontal plate. The clips 21 have a limiting plate, which is circular, and has a connecting part between the center of the limiting plate and the vertical plate 2. This prevents the horizontal plate from loosening after being inserted through the slots.
[0028] These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of this utility model, so that those skilled in the art can better understand and utilize this utility model.
Claims
1. A post-cast strip casting blocking airbag assembly, characterized in that: Includes airbags (1) installed in the post-cast strip area, the airbags (1) being arranged in a row to form a block between the wall groove and the beam groove; The airbag (1) is detachably fixed with a vertical plate (2) on one side. The vertical plate (2) is a strip-shaped plate structure that extends along the length of the airbag (1). The airbags (1) are arranged in a row, and their corresponding vertical plates (2) are fixed together by horizontal plates (3). The horizontal plates (3) are detachably installed on the vertical plates (2) and are arranged along the length of the vertical plates (2).
2. The post-cast strip casting blocking airbag assembly according to claim 1, characterized in that: The vertical plate (2) has a retaining strip (4) on one side corresponding to the airbag (1). The retaining strip (4) is an elastic retaining strip that extends along the length of the vertical plate (2) and is set parallel to the vertical plate (2). The airbag (1) has a slot (11) for inserting the retaining strip (4).
3. The post-cast strip casting blocking airbag assembly according to claim 2, characterized in that: The card strip (4) has a connecting part at the same end as the vertical plate (2), and the other end of the card strip (4) has a protrusion (41) extending toward the side of the vertical plate (2).
4. The post-cast strip casting blocking airbag assembly according to claim 1, characterized in that: The horizontal plate (3) is provided with multiple slots (31), which are arranged along the length of the horizontal plate (3). The vertical plate (2) is provided with multiple buckles (21) for limiting the position along the length, which are used to engage and fix with the slots (31).
5. The post-cast strip casting blocking airbag assembly according to claim 4, characterized in that: The buckle (21) has a limiting plate, which is circular, and there is a connecting part between the center of the limiting plate and the vertical plate (2).