Stable hollow floor core mold

Abstract

This utility model discloses a stable hollow floor slab core mold, comprising a core mold body, which includes an outer shell and a hollow inner cavity. The core mold body includes spaced-apart circular portions and quasi-rectangular portions, with both ends forming convex spherical structures. The circular and quasi-rectangular portions effectively resist the outward expansion force caused by internal air pressure under high temperatures, reducing bulging caused by high temperatures. This prevents the concrete layer above the bulging areas from thinning, thus avoiding significant structural safety issues. The circular portions ensure the stability of the core mold under high-temperature environments, while the quasi-rectangular portions increase the hollowness of the core mold, thereby reducing cement usage.

Description

Technical Field

[0001] This utility model relates to the field of hollow floor slab core molds, and in particular to a stable hollow floor slab core mold. Background Technology

[0002] Hollow core slab technology involves pre-embedding lightweight core molds into concrete floor slabs to form a cavity structure, thereby reducing self-weight and saving materials. Currently, most hollow core slab molds are square, meaning that the upper, lower, and two end faces of the hollow core slab are all planar structures. This structure can cause bulging of the core mold after inflation, especially in hot summer weather, leading to uneven cement thickness and affecting the overall load-bearing capacity of the floor slab. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a stable hollow floor slab core mold that prevents bulging of the core mold under high temperature conditions.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a stable hollow floor slab core mold, including a core mold body, the core mold body including an outer shell and a hollow inner cavity, the core mold body including a circular part and a rectangular part spaced apart, and the two ends of the core mold body having a convex spherical structure.

[0005] Furthermore, the diameter of the spherical structure is less than or equal to the length of the short side of the rectangular portion, and the diameter of the circular portion is less than or equal to the length of the short side of the rectangular portion.

[0006] Furthermore, the two sides of the spherical protrusions at both ends of the core mold body are respectively provided with rectangular protrusions.

[0007] Furthermore, the connection between the rectangular portion and the circular portion is provided with an inclined first slope structure, so that the included angle between the rectangular portion and the circular portion is greater than 90 degrees.

[0008] Furthermore, the width of the circular portion is greater than or equal to 0.5 cm.

[0009] Furthermore, the width of the rectangular portion is 0.5-7 times the width of the circular portion.

[0010] Furthermore, the four corners of the rectangular portion are arc-shaped structures.

[0011] Furthermore, the upper and / or lower surfaces of the core mold body are planar structures.

[0012] Furthermore, the core mold body includes multiple core mold bodies arranged side by side, and a connecting part is provided between the two ends of two adjacent core mold bodies. A cavity is provided in the connecting part, and the cavity connects the inner cavities of two adjacent core mold bodies.

[0013] Furthermore, the connecting surface between the connecting part and the adjacent core mold body is a second inclined surface structure, so that the angle between the connecting part and the adjacent core mold body is greater than 90 degrees.

[0014] The beneficial effects of this utility model are:

[0015] 1. The circular and rectangular sections in this structure effectively resist the outward expansion force caused by internal air pressure under high temperatures. This reduces the risk of bulging due to high temperatures, which would thin the concrete layer above the bulging area of ​​the core mold and cause significant structural safety issues. The circular section ensures the stability of the core mold under high-temperature conditions, while the rectangular section increases the hollowness of the core mold, thereby reducing the amount of cement used.

[0016] 2. The spherical structure design at both ends of this structure can effectively disperse and alleviate the direct impact of internal air pressure on the end of the core mold in high-temperature environments, further reducing the occurrence of bulging at both ends.

[0017] 3. The first and second inclined planes in this structure facilitate easy demolding during production, thereby ensuring product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a stable hollow floor slab core mold according to an embodiment of this application.

[0019] Figure 2 This is a structural schematic diagram from another perspective of a stable hollow floor slab core mold according to an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of a stable hollow floor slab core mold with convex, spherical structures at both ends, according to an embodiment of this application.

[0021] Figure 4 This is a structural diagram illustrating a stable hollow floor slab core mold comprising multiple core mold bodies, as described in an embodiment of this application.

[0022] The parts marked in the figure are: core mold body 1, circular part 2, rectangular part 3, spherical structure 4, rectangular protrusion 5, first inclined surface structure 6, arc structure 7, connecting part 8, second inclined surface structure 9. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 3 As shown, a stable hollow floor slab core mold includes a core mold body 1, which includes an outer shell and a hollow inner cavity. The core mold body 1 includes a circular portion 2 and a rectangular portion 3 spaced apart, and the two ends of the core mold body 1 have a convex spherical structure 4.

[0025] Specifically, the core mold body 1 can be provided with air inlets at both ends. In order to facilitate transportation, the air inlets are not sealed during production. When the product is transported to the construction site, the air inlets can be sealed on site.

[0026] Specifically, the core mold body 1, with its spaced circular portions 2 and rectangular portions 3, exhibits a more stable overall structure, maintaining its shape and performance under various conditions. In high-temperature environments, the arc design of the circular portions 2 effectively disperses internal air pressure, reducing bulging caused by uneven air pressure, thus improving the core mold's stability and service life. Simultaneously, the rectangular portions 3 not only increase the core mold's hollowness and reduce cement usage but also facilitate positioning during casting, improving construction efficiency. Furthermore, the spherical structures 4 at both ends of the core mold body 1 further enhance its compressive strength and stability, ensuring good performance even under harsh conditions such as high temperature and high pressure.

[0027] In this embodiment, the diameter of the spherical structure 4 is less than or equal to the length of the short side of the rectangular portion 3, and the diameter of the circular portion 2 is less than or equal to the length of the short side of the rectangular portion 3.

[0028] Specifically, a preferred structure is one where the diameter of the spherical structure 4 is equal to the length of the shorter side of the rectangular portion 3. This design ensures that the protrusions of the spherical structure 4 do not protrude beyond the edge of the rectangular portion 3. Furthermore, it increases the contact area between the core mold and the concrete during casting, enhancing the bond between the core mold and the concrete and further improving the overall load-bearing capacity of the floor slab. In addition, the equal diameter of the circular portion 2 and the shorter side of the rectangular portion 3 maximizes the hollowness of the core mold, thereby reducing the amount of concrete used.

[0029] In this embodiment, rectangular protrusions 5 are respectively provided on both sides of the spherical structure 4 at both ends of the core mold body 1.

[0030] Specifically, the raised, spherical structure 4 can effectively disperse internal air pressure in high-temperature environments, reducing bulging caused by uneven air pressure, thereby improving the stability and service life of the core mold. At the same time, the design of the rectangular protrusions 5 can maximize the hollowness of the entire core mold structure, thereby reducing the use of concrete while ensuring the stability of the core mold.

[0031] In this embodiment, the connection between the rectangular portion 3 and the circular portion 2 is provided with an inclined first slope structure 6, so that the included angle between the rectangular portion 3 and the circular portion 2 is greater than 90 degrees.

[0032] Specifically, after the core mold is formed, the design of the first inclined surface structure 6 allows the core mold to be quickly demolded from the forming mold, while ensuring the integrity of the core mold structure after demolding and a high yield rate.

[0033] In this embodiment, the width of the circular part 2 is greater than or equal to 0.5cm. The width of the circular part 2 is the width A in the figure. The width of the circular part 2 can be 0.5cm, 1cm, 2cm, 3cm, etc.

[0034] The above-mentioned configuration in this structure can ensure the stability of the circular part 2. If the width of the circular part 2 is designed to be too small, the circular part 2 will not be able to withstand the reverse push of the internal air pressure in a high-temperature environment, which will cause the deformation of the entire core mold structure.

[0035] In this embodiment, the width of the rectangular portion 3 is 0.5-7 times the width of the circular portion 2.

[0036] Specifically, as shown in the figure, the width of the rectangular part 3 is B, and the width of the circular part 2 is A. Specifically, the width B of the rectangular part 3 can be 0.5 times, 1 times, 2 times, 3 times, 4 times, 5 times, 6 times or 7 times the width A of the circular part 2. This limitation allows the arc design of the circular part 2 to more effectively disperse the internal air pressure, ensuring that the core mold does not bulge, while also maximizing the hollowness of the core mold.

[0037] In this embodiment, the four corners of the rectangular portion 3 are arc-shaped structures 7.

[0038] Specifically, after the core mold is injection molded, the design of the arc structure 7 allows the core mold to be quickly demolded from the molding mold, while ensuring the integrity of the core mold structure after demolding and a high yield rate.

[0039] In this embodiment, the upper and / or lower surfaces of the core mold body 1 are planar structures.

[0040] Specifically, during the design process, the upper or lower surface of the core mold body 1 can be designed as a planar structure, or both the upper and lower surfaces of the core mold can be designed as planar structures, thereby facilitating the stacking and transportation of the core mold.

[0041] In this embodiment, the core mold body 1 includes multiple core mold bodies arranged side by side, and a connecting part 8 is provided between the two ends of two adjacent core mold bodies 1. A cavity is provided in the connecting part 8, and the cavity connects the inner cavities of two adjacent core mold bodies 1.

[0042] Specifically, multiple core mold bodies 1 can be arranged side by side, such as 2, 3, 4, etc. Adjacent core molds are connected by connecting parts 8 to form a whole, thereby reducing the need for interconnection between individual core molds during actual use and making it more convenient to use.

[0043] In this embodiment, the connection surface between the connecting part 8 and the adjacent core mold body 1 is a second inclined surface structure 9, so that the angle between the connecting part 8 and the adjacent core mold body 1 is greater than 90 degrees.

[0044] Specifically, after the core mold is injection molded, the design of the second inclined surface structure 9 allows the core mold to be quickly demolded from the molding mold, while ensuring the integrity of the core mold structure after demolding and a high yield rate.

[0045] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stable hollow floor slab core mold, characterized in that: The core mold body (1) includes an outer shell and a hollow inner cavity. The core mold body (1) includes a circular part (2) and a rectangular part (3) arranged at intervals. The two ends of the core mold body (1) have a convex spherical structure (4).

2. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The diameter of the spherical structure (4) is less than or equal to the length of the short side of the rectangular part (3), and the diameter of the circular part (2) is less than or equal to the length of the short side of the rectangular part (3).

3. The hollow floor slab core mold for stability as described in claim 1, characterized in that: The core mold body (1) has spherical structures (4) at both ends with rectangular protrusions (5) on both sides.

4. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The connection between the rectangular portion (3) and the circular portion (2) is provided with an inclined first slope structure (6), so that the included angle between the rectangular portion (3) and the circular portion (2) is greater than 90 degrees.

5. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The width of the circular part (2) is greater than or equal to 0.5 cm.

6. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The width of the rectangular part (3) is 0.5-7 times the width of the circular part (2).

7. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The four corners of the rectangular part (3) are arc-shaped structures (7).

8. The hollow floor slab core mold with stability as described in claim 1, characterized in that: The upper and / or lower surfaces of the core mold body (1) are planar structures.

9. The hollow floor slab core mold with stability as described in any one of claims 1 to 8, characterized in that: The core mold body (1) includes multiple core mold bodies arranged side by side. A connecting part (8) is provided between the two ends of two adjacent core mold bodies (1). A cavity is provided in the connecting part (8) and the cavity connects the inner cavities of two adjacent core mold bodies (1).

10. The hollow floor slab core mold with stability as described in claim 9, characterized in that: The connection surface between the connecting part (8) and the adjacent core mold body (1) is a second inclined surface structure (9), so that the angle between the connecting part (8) and the adjacent core mold body (1) is greater than 90 degrees.

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