A new modular weight-reducing block for prefabricated wall panels

By employing a two-way steel mesh and C-shaped fixing plate design in the precast wall panel, combined with vertical steel bars and dovetail bars, a stable three-dimensional structure is formed, which solves the problem of easy displacement and breakage of the weight-reducing blocks during concrete pouring, improves the strength and stability of the structure, and ensures the quality and precision of the precast wall panel.

CN224464953UActive Publication Date: 2026-07-07JIANGSU HAOSEN BUILDING DESIGN CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU HAOSEN BUILDING DESIGN CO LTD
Filing Date
2025-08-07
Publication Date
2026-07-07

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Abstract

The utility model discloses a prefabricated wallboard novel modular weight reduction block belongs to building material technical field, this prefabricated wallboard novel modular weight reduction block, including weight reduction block body, the weight reduction block body inside is provided with a plurality of connecting holes, the weight reduction block body outer wall all around is provided with two installation slot, a plurality of connecting holes are installed steel mesh, a plurality of installation slot all are installed with C type fixed sheet, a plurality of C type fixed sheet inner wall all are fixedly connected with two vertical steel bars, a plurality of C type fixed sheet outside all are fixedly connected with dovetail bar, the utility model discloses a steel mesh is set up, when being impacted by external force, steel mesh absorbs energy through self deformation, and the impact force is dispersed to whole weight reduction block structure, makes the weight reduction block keep structural integrity in the pouring process, effectively reduces the risk of being washed out, guarantees prefabricated wallboard finished product quality and performance stability, improves the stability of weight reduction block all around through setting up C type fixed sheet.
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Description

Technical Field

[0001] This utility model relates to the field of building materials technology, and in particular to a novel modular weight-reducing block for prefabricated wall panels. Background Technology

[0002] Precast wall panels, as a widely used component in the construction field, have many advantages. They enable the factory production of building components, improving production efficiency and quality, shortening the on-site construction cycle, and ensuring the overall performance and quality stability of the building. With the continuous development of building industrialization, the application of precast wall panels in various types of buildings is becoming more and more widespread, including residential, commercial buildings, and industrial plants. The production of modular weight-reducing blocks can adopt standardized molds and processes, resulting in high production efficiency and easy quality control. In the production process of precast wall panels, the weight-reducing blocks are cast or assembled with the wall panel body in an integrated manner, which is relatively simple and conducive to improving the overall production efficiency and quality of precast wall panels.

[0003] Currently, precast wall panel components generally use lightweight materials such as EPS foam blocks and recycled plastic modules as weight-reducing blocks. At the same time, the weight-reducing blocks are prone to displacement during concrete pouring vibration, resulting in uneven thickness of the concrete wall panel protective layer. Furthermore, because traditional weight-reducing blocks are relatively brittle, they are easily crushed by the concrete pouring force during pouring, thus failing to achieve the expected weight reduction effect. This may lead to an increase in the structural self-weight, exceeding the design bearing capacity, and causing deformation, cracks, or even the risk of partial collapse.

[0004] Therefore, there is an urgent need to provide a new type of modular weight-reducing block for prefabricated wall panels to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of modular weight-reducing block for prefabricated wall panels.

[0006] To solve the above technical problems, the present invention provides a new type of modular weight-reducing block for prefabricated wall panels, including a weight-reducing block body, wherein multiple connecting holes are provided inside the weight-reducing block body, and two mounting grooves are provided around the outer wall of the weight-reducing block body, and steel mesh is installed between the multiple connecting holes.

[0007] Each of the multiple mounting slots is equipped with a C-shaped fixing plate, and each of the multiple C-shaped fixing plates has two vertical steel bars fixedly connected to its inner wall, and each of the multiple C-shaped fixing plates has a dovetail steel bar fixedly connected to its outer side.

[0008] The present invention is further configured such that: the steel mesh is a single layer with bidirectional arrangement, the diameter of the steel bars in the steel mesh is 4mm, and the spacing is 100mm.

[0009] Through the above technical solution, the bidirectional steel mesh can provide support for the weight-reducing block in two mutually perpendicular directions. The 4mm diameter of the steel bars ensures a certain strength without causing a significant increase in the weight of the weight-reducing block due to excessive steel bar thickness, thus affecting the weight-reducing effect. The 100mm spacing is a reasonable design, which makes the steel bars evenly distributed and can effectively disperse the impact and pressure during concrete pouring, avoiding excessive local stress on the weight-reducing block body and thus enhancing the overall structural strength and toughness of the weight-reducing block body and improving its impact resistance.

[0010] The present invention is further configured such that all of the vertical reinforcing bars are welded and fixed to the reinforcing bars on the reinforcing mesh.

[0011] Through the above technical solution, the vertical steel bars and steel mesh are welded together to form a stable three-dimensional structure, which increases the number of supporting columns and beams in the building frame, enabling the entire structure to better withstand forces from all directions. This improves the overall strength and stability of the modular weight-reducing block, making it less prone to deformation or damage during concrete pouring and subsequent use.

[0012] The present invention is further configured such that the outer wall of the steel mesh is tightly fitted to the inner wall of the multiple connecting holes.

[0013] Through the above technical solution, the tight fit maximizes the contact area between the steel mesh and the connecting holes, which can effectively transfer force and stress. When the weight-reducing block body is subjected to external force, this tight connection can prevent relative sliding or displacement between the steel mesh and the connecting holes, thereby ensuring the stability of the entire structure and helping to maintain the integrity and function of the weight-reducing block body.

[0014] The present invention is further configured such that: all of the plurality of C-shaped fixing pieces are located on the same plane, and every two C-shaped fixing pieces are parallel to each other.

[0015] Through the above technical solution, the C-shaped fixing plates that are on the same plane and parallel to each other can form a uniform and stable support structure around the weight-reducing block body. They can jointly bear the lateral pressure from the concrete pouring, effectively preventing the weight-reducing block body from deforming or shifting during the pouring process, ensuring that the shape and position of the weight-reducing block body remain accurate, thereby improving the quality and precision of the precast wall panel components.

[0016] The present invention is further configured such that both sides of the outer wall of the plurality of C-shaped fixing pieces fit into the inner wall of the corresponding mounting groove.

[0017] The above technical solution increases the contact area between the C-shaped fixing plate and the mounting groove, thereby improving the stability of the connection. During the concrete pouring process, it can effectively resist the impact and pressure of the concrete, prevent the C-shaped fixing plate from shifting or shaking, ensure its fixing effect in the weight reduction block body, and thus enhance the stability of the entire weight reduction block body structure.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. By setting up a steel mesh, when subjected to external impact, the steel mesh absorbs energy through its own deformation, dispersing the impact force throughout the entire weight-reducing block structure, avoiding local stress concentration, and ensuring the structural integrity of the weight-reducing block during the casting process, effectively reducing the risk of being crushed, and ensuring the quality and performance stability of the precast wall panel.

[0020] 2. By setting a C-shaped fixing piece, this utility model can serve as a connecting component between modules. It can tightly connect adjacent weight-reducing blocks together, so that multiple weight-reducing blocks form a stable overall structure. At the same time, it can effectively transmit force and avoid local deformation or damage caused by loose connection between modules, thereby improving the structural performance of the entire precast wall panel.

[0021] 3. By setting dovetail reinforcement and binding it with the steel mesh, the weight-reducing block is integrated with the steel reinforcement structure of the wall panel, so that the external force generated by vibration can be evenly transmitted through the steel mesh and dovetail reinforcement, avoiding displacement, overturning or floating of the weight-reducing block due to uneven force, and ensuring that the weight-reducing block remains stable during vibration. Attached Figure Description

[0022] Figure 1 This is an appearance drawing of the present utility model;

[0023] Figure 2 This is a partial structural schematic diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the weight reduction block body structure of this utility model;

[0025] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0026] In the diagram: 1. Weight reduction block body; 2. Connecting hole; 3. Mounting groove; 4. Steel mesh; 5. C-shaped fixing piece; 6. Vertical steel bar; 7. Dovetail bar. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0028] Please see Figure 1 - Figure 4 A novel modular weight-reducing block for precast wall panels includes a weight-reducing block body 1. The body 1 has multiple connecting holes 2 inside, and two mounting grooves 3 are formed around each of its four outer walls. A steel mesh 4 is installed between the connecting holes 2. The steel mesh 4 is a single-layer, bidirectional arrangement, with the steel bars having a diameter of 4mm and a spacing of 100mm. The bidirectional steel mesh 4 provides support for the weight-reducing block in two mutually perpendicular directions. The 4mm steel bar diameter ensures sufficient strength without significantly increasing the weight of the block due to excessively thick steel bars, thus maintaining the weight-reducing effect. The 100mm spacing is reasonable, ensuring uniform steel bar distribution and effectively dispersing the impact and pressure during concrete pouring, preventing localized damage to the weight-reducing block body 1. The excessive force caused the part to break, thereby enhancing the overall structural strength and toughness of the weight-reducing block body 1 and improving its impact resistance. Multiple mounting slots 3 are equipped with C-shaped fixing plates 5, and two vertical steel bars 6 are fixedly connected to the inner wall of each C-shaped fixing plate 5. The vertical steel bars 6 are welded and fixed to the steel bars on the steel mesh 4. After the vertical steel bars 6 are welded to the steel mesh 4, a stable three-dimensional structure is formed, which increases the number of supporting columns and beams in the building frame, enabling the entire structure to better withstand forces from all directions, thereby improving the overall strength and stability of the modular weight-reducing block body 1 and making it less prone to deformation or damage during concrete pouring and subsequent use. Dovetail bars 7 are fixedly connected to the outer side of each C-shaped fixing plate 5.

[0029] like Figure 1 and Figure 3As shown, the outer wall of the steel mesh 4 is tightly fitted to the inner wall of the multiple connecting holes 2. This tight fit maximizes the contact area between the steel mesh 4 and the connecting holes 2, effectively transferring force and stress. When the weight-reducing block body 1 is subjected to external force, this tight connection prevents relative sliding or displacement between the steel mesh 4 and the connecting holes 2, thus ensuring the stability of the entire structure and helping to maintain the integrity and function of the weight-reducing block body 1. Multiple C-shaped fixing plates 5 are all on the same plane, and every two C-shaped fixing plates 5 are parallel to each other. These parallel C-shaped fixing plates 5 on the same plane form a uniform and stable support structure around the weight-reducing block body 1. Together, they bear the lateral pressure from concrete pouring, effectively preventing deformation or displacement of the weight-reducing block body 1 during pouring, ensuring the accurate shape and position of the weight-reducing block body 1, thereby improving the quality and precision of the precast wall panel components. The outer walls of multiple C-shaped fixing pieces 5 fit into the inner walls of the corresponding mounting grooves 3 on both sides, increasing the contact area between the C-shaped fixing pieces 5 and the mounting grooves 3, thereby improving the stability of the connection. During concrete pouring, they can effectively resist the impact and pressure of concrete, preventing displacement or shaking of the C-shaped fixing pieces 5, ensuring their fixation effect in the weight-reducing block body 1, and thus enhancing the stability of the entire weight-reducing block body 1 structure.

[0030] In use and production, the C-shaped fixing piece 5 is first welded and fixed to the steel mesh 4, and then placed into the mold along with the material for heating and foaming. After cooling and stabilization, a modular weight-reducing block body 1 is formed. During construction, the modular weight-reducing block body 1 is first tied and fixed to the steel mesh 4 of the wall panel by the dovetail reinforcement 7, while controlling the positioning accuracy of the weight-reducing block body 1. Then, concrete is poured, vibration and other subsequent wall panel production processes are carried out.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A new type of modularized weight-reducing block for prefabricated wall panels, comprising a weight-reducing block body (1), characterized in that: The weight reduction block body (1) has multiple connecting holes (2) inside, and two mounting grooves (3) are opened around the outer wall of the weight reduction block body (1). A steel mesh (4) is installed between the multiple connecting holes (2). Each of the multiple mounting slots (3) is equipped with a C-shaped fixing piece (5), and each of the multiple C-shaped fixing pieces (5) has two vertical steel bars (6) fixedly connected to its inner wall, and each of the multiple C-shaped fixing pieces (5) has a dovetail bar (7) fixedly connected to its outer side.

2. The novel modular weight-reducing block for prefabricated wall panels according to claim 1, characterized in that: The steel mesh (4) is a single-layer bidirectional arrangement, and the diameter of the steel bars in the steel mesh (4) is 4mm and the spacing is 100mm.

3. The novel modular weight-reducing block for prefabricated wall panels according to claim 1, characterized in that: The vertical reinforcing bars (6) are all welded and fixed to the reinforcing bars on the reinforcing mesh (4).

4. The novel modular weight-reducing block for prefabricated wall panels according to claim 1, characterized in that: The outer wall of the steel mesh (4) is tightly fitted to the inner wall of the multiple connecting holes (2).

5. A novel modular weight-reducing block for prefabricated wall panels according to claim 1, characterized in that: The multiple C-shaped fixing pieces (5) are all in the same plane, and every two C-shaped fixing pieces (5) are parallel to each other.

6. The novel modular weight-reducing block for prefabricated wall panels according to claim 1, characterized in that: Both sides of the outer wall of the multiple C-shaped fixing pieces (5) are fitted with the inner wall of the corresponding mounting groove (3).