Round detachable steel internal mold of hollow slab
By using a circular steel inner mold spliced by multiple fan-shaped plates, the problems of the existing medium and high-density foam core molds that generate buoyancy and cannot be removed when pouring concrete are solved, and a more stable and economical construction of prefabricated hollow plates is achieved.
Patent Information
- Application Number
- CN202422613068.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The existing prefabricated hollow plate circular box chamber uses high-density foam as the core mold, which causes buoyancy to be generated when pouring concrete, changing the thickness of the plate and the position of the steel bars. The foam core mold cannot be removed and cannot be recycled, and the cost is high.
Multiple sector plates are spliced into a circular steel inner mold, instead of the traditional high-density foam core mold, and fixedly spliced through circular plates, mounting holes and bolts to form a detachable steel inner mold.
It improves the stability of hollow plates, reduces material investment, improves construction efficiency and solid quality, reduces construction costs, and improves the reuse rate of materials.
Smart Images
Figure CN223000790U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of precast hollow slabs, and particularly relates to a circular detachable steel inner mold for hollow slabs. Background Technique
[0002] A precast hollow slab is a precast floor slab with one or several longitudinal channels inside to save materials and reduce weight. It is usually made of prestressed concrete, and its size is determined according to the size of the house bay and the capacity of the hoisting machinery. The channels in the slab are beneficial to sound insulation and heat insulation.
[0003] Currently, the existing conventional circular chambers of precast hollow slabs usually use high-density foam as the core mold. Since the high-density polystyrene foam core mold is a lightweight material with a light self-weight, when pouring concrete, a large buoyancy will be generated when the high-density polystyrene foam core mold is completely immersed in the concrete. Under the action of the buoyancy, the upper layer of steel bars that have been tied will be displaced, changing the thickness of the slab and the position of the steel bars. Moreover, the foam core mold cannot be removed after the concrete is poured and cannot be recycled, resulting in a high cost. Therefore, we propose a circular detachable steel inner mold for hollow slabs. Content of the Utility Model
[0004] The purpose of the utility model is to provide a circular detachable steel inner mold for hollow slabs to solve the existing problems mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A circular detachable steel inner mold for hollow slabs, including a circular steel inner mold, semi-cylindrical barrels, and sector plates. The circular steel inner mold is composed of two semi-cylindrical barrels, and each semi-cylindrical barrel is composed of two sector plates. The two sector plates on the same semi-cylindrical barrel are movably connected through a second connecting pin. Circular plates are arranged at both ends of the circular steel inner mold. Second mounting holes are provided around the circular plates, and first mounting holes are provided at both ends of the circular steel inner mold. The first mounting holes are opened at both ends of the sector plates. The two semi-cylindrical barrels on the same circular steel inner mold are fixedly spliced through the first mounting holes, circular plates, and second mounting holes with bolts.
[0006] Preferably, a panel is arranged on the inner side of the sector plate, and the panel is fixedly arranged on the inner side of the sector plate by welding.
[0007] Preferably, a first connecting pin is arranged on the outer side of the panel, and the first connecting pin is movably connected to the panel through a connecting sleeve.
[0008] Preferably, a connecting plate is arranged between the two mutually corresponding first connecting pins on the two sector plates of the same semi-cylindrical barrel, and both ends of the connecting plate are fixedly connected to the two first connecting pins by bolts.
[0009] Preferably, multiple connecting plates inside the same semi-cylindrical tube are fixedly connected by channel steel, and the inside of the channel steel is fixedly connected to the connecting plate by bolts.
[0010] Preferably, back ribs are arranged on the inner side of the sector plate, and the back ribs are arranged side by side at equal intervals on the inner side of the sector plate by welding.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] 1. By adopting the method of splicing multiple sector plates into a circular steel inner mold to replace the traditional use of high-density foam as the core mold, and cooperating with the installation of circular plates at both ends, its stability is greatly improved, making it convenient for construction, saving space, having a high reuse rate, and not being easily deformed, solving problems such as insufficient thickness caused by the deformation of the inner mold of the top plate and bottom plate.
[0013] 2. Through the design of the circular steel inner mold, the input of disposable materials is greatly reduced, the prefabrication construction efficiency and entity quality of the hollow slab are improved, the input of resources such as personnel and equipment during the construction process is reduced, and the construction cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 is a schematic diagram of the internal structure of the circular steel inner mold of the present utility model;
[0016] Figure 3 is a schematic diagram of the multi-angle structure of the present utility model.
[0017] In the figure: 1, circular steel inner mold; 2, semi-cylindrical tube; 3, sector plate; 4, back rib; 5, panel; 6, first connecting pin; 7, connecting plate; 8, channel steel; 9, second connecting pin; 10, first mounting hole; 11, circular plate; 12, second mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0019] Please refer to Figures 1-3, the present utility model provides a technical solution for a hollow slab circular detachable steel inner mold: including a circular steel inner mold 1, semi-cylindrical barrels 2 and sector plates 3. The circular steel inner mold 1 is composed of two semi-cylindrical barrels 2, and each semi-cylindrical barrel 2 is composed of two sector plates 3. The two sector plates 3 on the same semi-cylindrical barrel 2 are movably connected through a second connecting pin 9. Circular plates 11 are provided at both ends of the circular steel inner mold 1, and second mounting holes 12 are formed around the circular plates 11. First mounting holes 10 are formed at both ends of the circular steel inner mold 1, and the first mounting holes 10 are opened at both ends of the sector plates 3. The two semi-cylindrical barrels 2 on the same circular steel inner mold 1 are fixedly spliced through the first mounting holes 10, circular plates 11 and second mounting holes 12 with bolts.
[0020] Specifically, a panel 5 is provided on the inner side of the sector plate 3, and the panel 5 is fixedly arranged on the inner side of the sector plate 3 by welding.
[0021] Specifically, a first connecting pin 6 is provided on the outer side of the panel 5, and the first connecting pin 6 is movably connected to the panel 5 through a connecting sleeve.
[0022] Specifically, a connecting plate 7 is provided between two corresponding first connecting pins 6 on the two sector plates 3 on the same semi-cylindrical barrel 2, and both ends of the connecting plate 7 are fixedly connected to the two first connecting pins 6 by bolts.
[0023] Specifically, multiple connecting plates 7 inside the same semi-cylindrical barrel 2 are fixedly connected through channel steels 8, and the inside of the channel steels 8 is fixedly connected to the connecting plates 7 by bolts.
[0024] Specifically, back ribs 4 are provided on the inner side of the sector plate 3, and the back ribs 4 are arranged side by side at equal intervals on the inner side of the sector plate 3 by welding.
[0025] In this implementation scheme, during use, the two ends of the connecting plate 7 are fixedly connected to the first connecting pins 6 on the inner side of the sector plates 3 of the same semi-cylindrical barrel 2 by bolts, so as to ensure the stability of the two sector plates 3. Then, the multiple connecting plates 7 inside the semi-cylindrical barrel 2 are connected and fixed through the channel steels 8 to improve their stability and the consistency of the splicing angles of the two sector plates 3. Then, through the circular plates 11, in cooperation with the first mounting holes 10, second mounting holes 12 and bolts, it is installed at both ends of the two spliced semi-cylindrical barrels 2, so that it can maintain stability and ensure the stability after the two semi-cylindrical barrels 2 are spliced, facilitating subsequent use.
[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A hollow plate circular detachable steel inner mold, comprising a circular steel inner mold (1), a semi-cylinder (2) and a sector plate (3), characterized in that: The circular steel inner mold (1) is composed of two semi-cylinders (2), each of which is composed of two fan-shaped plates (3). The two fan-shaped plates (3) on the same semi-cylinder (2) are movably connected via a second connecting pin (9). Circular plates (11) are provided at both ends of the circular steel inner mold (1). Second mounting holes (12) are provided around the circular plates (11). First mounting holes (10) are provided at both ends of the circular steel inner mold (1). The first mounting holes (10) are provided at both ends of the fan-shaped plates (3). The two semi-cylinders (2) on the same circular steel inner mold (1) are fixedly spliced via the first mounting holes (10), the circular plates (11) and the second mounting holes (12) in combination with bolts.
2. The circular detachable steel inner mold for hollow plates according to claim 1 is characterized in that: A panel (5) is provided on the inner side of the sector plate (3), and the panel (5) is fixedly arranged on the inner side of the sector plate (3) by welding.
3. The circular detachable steel inner mold for hollow plates according to claim 2 is characterized in that: A first connecting pin (6) is provided on the outer side of the panel (5), and the first connecting pin (6) is movably connected to the panel (5) via a connecting sleeve.
4. The circular detachable steel inner mold for hollow plates according to claim 1 is characterized in that: A connecting plate (7) is provided between two first connecting pins (6) corresponding to each other on two sector plates (3) on the same semi-cylinder (2), and two ends of the connecting plate (7) are fixedly connected to the two first connecting pins (6) by bolts.
5. The circular detachable steel inner mold for hollow plates according to claim 1, characterized in that: A plurality of connecting plates (7) inside the same semi-cylinder (2) are fixedly connected via a channel steel (8), and the interior of the channel steel (8) is fixedly connected to the connecting plates (7) via bolts.
6. The circular detachable steel inner mold for hollow plates according to claim 1, characterized in that: Back ribs (4) are arranged on the inner side of the sector plate (3), and the back ribs (4) are arranged side by side and equidistantly on the inner side of the sector plate (3) by welding.