Fabricated hollow building block
By designing connecting grooves and protrusions, rock wool insulation boards, and gently sloping threaded anti-slip grooves on prefabricated hollow blocks, the problems of inconvenient positioning and splicing and insufficient insulation are solved, achieving stable splicing and efficient insulation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG WORLD TRADE DECORATION DESIGN ENG CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-05
AI Technical Summary
Existing prefabricated hollow blocks are inconvenient to position and assemble, and have insufficient thermal insulation capacity, which affects the stability of construction and the thermal insulation effect.
The design incorporates connecting grooves and protrusions on one side of the main block to form a mortise and tenon joint. Rock wool insulation boards are installed inside, and gentle-slope threads and anti-slip grooves are provided on the surface of the block and inside the hollow cavity to enhance stability and insulation performance.
It enables convenient positioning and splicing, improves construction efficiency and stability, while enhancing insulation, reducing energy consumption, and strengthening the stability and durability of the wall structure.
Smart Images

Figure CN224200134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, specifically a prefabricated hollow block. Background Technology
[0002] In the construction industry, masonry is widely used in house construction. In order to save materials and reduce weight, a type of prefabricated hollow block has emerged in the building materials industry, which is used for construction operations.
[0003] However, due to the poor positioning, splicing, and insulation capabilities of existing prefabricated hollow blocks, it is not convenient to position and securely splice two prefabricated hollow blocks in actual use. Commonly used prefabricated hollow blocks have smooth surfaces on all four sides, which do not provide a stable connection during construction, affecting the stability of the building. Furthermore, the poor insulation capabilities of commonly used prefabricated hollow blocks affect the insulation effect of the building. Utility Model Content
[0004] The purpose of this utility model is to provide a prefabricated hollow block to solve the problems mentioned in the background art, such as the inconvenience of positioning and stabilizing two prefabricated hollow blocks and the lack of heat insulation capability.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A prefabricated hollow block includes a block body, with two connecting grooves on one side of the block body, and two connecting protrusions fixedly installed on the side of the block body away from the connecting grooves. A rock wool insulation board is provided on one side inside the block body.
[0007] Preferably, a first splicing groove is provided on one side of the block body at the middle of the two connecting grooves, and a second splicing groove is provided on the side of the block body away from the first splicing groove.
[0008] Preferably, the block body has two hollow cavities in the middle, and the upper and lower surfaces of the hollow cavities are provided with gently sloping threads.
[0009] Preferably, the upper and lower surfaces of the block body are provided with upper anti-slip grooves, and the two sides of the block body are provided with side anti-slip grooves.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. This type of prefabricated hollow block, through the setting of connecting grooves and connecting protrusions, allows the connecting protrusion of one block body to be embedded into the connecting groove of another block body during splicing operations, forming a mortise and tenon-style positioning and splicing structure. Without the need for additional complex positioning tools, two prefabricated hollow blocks can be conveniently positioned and securely spliced, greatly improving construction efficiency and ensuring the stability after splicing, effectively avoiding the impact on construction quality due to weak splicing.
[0012] 2. This type of prefabricated hollow block, by setting a rock wool insulation board on one side inside the block body, makes full use of the good thermal insulation performance of the rock wool insulation board, which can effectively reduce the heat exchange between indoor and outdoor, improve the insulation effect of the building, reduce the energy consumption of the building in the heating and cooling process, and achieve the goal of green and energy-saving building.
[0013] 3. This type of prefabricated hollow block, through the synergistic effect of the first and second splicing grooves, the gently sloping threads of the hollow cavity, the upper anti-slip groove, and the side anti-slip groove, forms a square cavity when the first and second splicing grooves are connected, allowing for pouring operations and improving the stability of the connection construction. The gently sloping threads of the hollow cavity increase the friction between the inside of the block body and the filling material, making the filling material more firmly fixed in the hollow cavity. The upper and side anti-slip grooves increase the friction on the surface of the block body, allowing for better interlocking with the blocks above and below or between adjacent blocks during the construction process, preventing sliding and displacement, thus enhancing the stability and durability of the overall wall structure from multiple dimensions. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the overall splicing structure of this utility model;
[0016] Figure 3 This is a partial structural diagram of the present invention;
[0017] Figure 4 This is a magnified structural diagram showing a partial detail of the present invention.
[0018] In the diagram: 1. Main block; 2. Connecting groove; 3. Connecting protrusion; 4. Rock wool insulation board; 5. First splicing groove; 6. Second splicing groove; 7. Hollow cavity; 8. Gentle slope thread; 9. Upper anti-slip groove; 10. Side anti-slip groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figures 1-4 As shown, this utility model provides a technical solution:
[0021] A prefabricated hollow block includes a block body 1. Two connecting grooves 2 are formed on one side of the block body 1. Two connecting protrusions 3 are fixedly installed on the side of the block body 1 away from the connecting grooves 2. A rock wool insulation board 4 is provided on one side inside the block body 1. When the side of one block body 1 with the connecting protrusions 3 is aligned with the side of another block body 1 with the connecting grooves 2, the connecting protrusions 3 are embedded into the connecting grooves 2. The rock wool insulation board 4 provided on one side inside the block body 1 then functions, and the rock wool insulation board 4 itself has good thermal insulation performance.
[0022] A first splicing groove 5 is provided on one side of the block body 1 in the middle of the two connecting grooves 2, and a second splicing groove 6 is provided on the side of the block body 1 away from the first splicing groove 5. Two hollow cavities 7 are provided in the middle of the block body 1. The upper and lower surfaces of the hollow cavities 7 are provided with gently sloping threads 8. The upper and lower surfaces of the block body 1 are provided with upper anti-slip grooves 9, and the two sides of the block body 1 are provided with side anti-slip grooves 10. The first splicing groove 5 and the second splicing groove 6 of the adjacent block body 1 are spliced together to form a square cavity. Pouring operations can be carried out in the square cavity. The upper anti-slip grooves 9 on the upper and lower surfaces of the block body 1 and the side anti-slip grooves 10 on both sides increase the friction of the surface of the block body 1.
[0023] In this embodiment, a type of prefabricated hollow block is used. First, an assembly process is performed. One block body 1 with the connecting protrusion 3 is aligned with the side of another block body 1 with the connecting groove 2. The connecting protrusion 3 is then embedded into the connecting groove 2, forming a mortise and tenon joint structure for initial positioning. Simultaneously, the first splicing groove 5 is aligned with the second splicing groove 6 of the adjacent block body 1, forming a square cavity. This cavity can be used for pouring concrete and other materials, further strengthening the horizontal connection between the adjacent block bodies 1 and ensuring stability after assembly. Regarding insulation, a rock wool insulation board 4 installed on one side of the block body 1 plays a crucial role. The rock wool insulation board 4 has excellent thermal insulation properties, effectively blocking heat transfer between the indoor and outdoor areas, thereby reducing heat loss or heat transfer during heating and cooling processes and lowering energy consumption. This system effectively regulates the internal temperature of the building, improves its insulation performance, and enhances the overall structural stability of the wall. Multiple structures within the main block 1 work together. The gently sloping threads 8 on the upper and lower surfaces of the hollow cavity 7 increase friction between the main block 1 and the filling material when insulation or other fillers are added, ensuring the filling material is firmly fixed within the cavity and preventing displacement or detachment during use. Furthermore, the upper anti-slip grooves 9 on the upper and lower surfaces of the main block 1, and the side anti-slip grooves 10 on both sides, increase surface friction. During construction, the upper anti-slip grooves 9 interlock with the upper and lower blocks, while the side anti-slip grooves 10 tightly engage with adjacent blocks, preventing sliding and displacement during construction and subsequent use. This multi-directional and multi-dimensional enhancement of the overall wall structure's stability and durability ensures the building's safety and stability.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A prefabricated hollow block, comprising a block body (1), characterized in that: Two connecting grooves (2) are provided on one side of the block body (1). Two connecting protrusions (3) are fixedly installed on the side of the block body (1) away from the connecting grooves (2). A rock wool insulation board (4) is provided on one side inside the block body (1). A first splicing groove (5) is provided on one side of the block body (1) in the middle of the two connecting grooves (2). A second splicing groove (6) is provided on the side of the block body (1) away from the first splicing groove (5). Two hollow cavities (7) are provided in the middle of the block body (1). The upper and lower surfaces of the hollow cavities (7) are provided with gentle slope threads (8). The upper and lower surfaces of the block body (1) are provided with upper anti-slip grooves (9). The two sides of the block body (1) are provided with side anti-slip grooves (10).