Concrete pouring core mold fixing device

Abstract

The utility model belongs to the technical field of building construction tools, and particularly discloses a concrete pouring mandrel fixing device, which is mounted between two adjacent mandrels in a large-span floor system, is used for fixing the positions of the mandrels, and comprises a hook and a screw rod, a pressing plate is sleeved on the hook, and an internal thread matched with the screw rod is arranged at the bottom of the hook; the top of the screw rod is connected with the internal thread, the bottom of the screw rod penetrates through the floor system bottom plate, and an I-shaped buckle is arranged at the bottom of the screw rod and is in threaded connection with the screw rod; the screw rod is further sleeved with a PVC pipe, the top of the PVC pipe abuts against the pressing plate, and the bottom of the PVC pipe abuts against the floor system bottom plate. The hook is hung on an upper plate rib of a large-span floor system, the bottom of the pressing plate abuts against the tops of the two adjacent core molds, the screw is matched with the I-shaped buckle, the whole fixing structure is stably tensioned, after concrete is poured and solidified, the screw and the square wood can be taken out of the floor system, and repeated utilization is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction tools, in particular to a concrete pouring core mold fixing device. Background Art

[0002] The ADS lightweight solid inner formwork is made of lightweight materials, and its own weight is greatly reduced compared to traditional building materials. When used in structures such as large-span floor slabs and hollow slabs, it can effectively reduce the overall weight of the floor structure, reduce the load borne by the lower structure (such as beams, columns, foundations, etc.), and reduce the requirements for the bearing capacity of the foundation, thereby saving the material usage and construction costs of the foundation project. During the pouring process of concrete, the liquid concrete exerts a large buoyancy on it. When the buoyancy exceeds the inner formwork's own gravity and the fixing force that can be provided by the existing fixing measures, the inner formwork will float up due to unbalanced force. And when the concrete flows unevenly, an uneven pressure distribution will be formed around the inner formwork, causing the inner formwork to be displaced by the lateral force. Therefore, the inner formwork needs to be fixed.

[0003] At present, when fixing the inner mold, the most commonly used method is to set a core mold top or other limiting device between two adjacent core molds, and then penetrate the core mold top with a screw, wherein a fixing portion for connecting with the upper plate rib is provided at the top of the screw, and the bottom of the screw is fixed by a nut, so that the core mold top or other limiting device tightens the core mold, thereby playing a role in fixing the lightweight solid composite core mold. However, after pouring, the anti-floating accessories such as the screw are cast as one with the lightweight solid composite core mold and cannot be reused. Utility Model Content

[0004] The utility model aims to overcome the defects in the prior art and provide a device for fixing a core mold for concrete pouring.

[0005] The utility model provides a concrete pouring core mold fixing device, which is installed between two adjacent core molds in a large-span floor slab and is used to fix the position of the core mold, comprising: a hook and a screw rod, wherein a pressure plate is sleeved on the hook, and an internal thread adapted to the screw rod is provided at the bottom of the hook; the top of the screw rod is connected with the internal thread, the bottom of the screw rod penetrates the floor slab, and an I-shaped buckle is provided at the bottom of the screw rod, and the I-shaped buckle is threadedly connected with the screw rod;

[0006] A PVC tube is also sleeved on the screw rod, the top of the PVC tube abuts against the pressing plate, and the bottom of the PVC tube abuts against the floor bottom plate.

[0007] A further solution is that a wooden beam is sleeved on the bottom of the screw rod, the top of the wooden beam abuts against the floor bottom plate, and the bottom of the wooden beam abuts against the I-shaped buckle.

[0008] A further solution is that a bolt is provided at the bottom of the screw rod, and the bolt is fixedly connected to the screw rod for disassembling the screw rod.

[0009] A further solution is that a boss is formed upwardly at the bottom of the hook, the top of the boss is flush with the bottom of the bent portion of the hook, and a through hole is opened on the pressure plate, the diameter of the through hole is adapted to the boss so that the top of the pressure plate abuts against the boss.

[0010] A further solution is that the hook is hung on the upper plate reinforcement of the large-span floor, and the bent portion of the hook abuts against the top of the pressing plate, and the bottom of the pressing plate abuts against the tops of two adjacent core molds.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The hook of the utility model is hung on the upper plate reinforcement of the large-span floor, and the bottom of the pressure plate is abutted against the tops of the two adjacent core molds. The entire fixed structure is firmly tightened by the screw and the I-shaped buckle. This structure allows the core mold to maintain a stable position when facing the buoyancy of liquid concrete and the lateral force generated by the flow, thereby ensuring the dimensional accuracy and quality stability of the structure after concrete pouring, avoiding concrete structural defects caused by core mold displacement and floating, reducing subsequent rework and repair costs, and improving the overall quality of the construction project. After the concrete pouring is completed and reaches a certain strength, by unscrewing the I-shaped buckle and removing the bolts, the screw, wooden beam and other components can be easily removed from the floor, realizing reuse. While reducing project costs, it also complies with the modern architectural concept of environmental protection and energy saving, and improves the efficiency of resource utilization.

[0013] Compared with some complicated core mold fixing technologies, the utility model does not need to use special and expensive equipment or materials, which greatly reduces the construction cost. The hooks, screws, wooden beams, PVC pipes and other materials used are all common materials in construction, with wide sources and affordable prices.

[0014] The utility model has a hexagonal bolt welded at the bottom of the screw rod, and when the screw rod is disassembled, the screw rod can be easily disassembled by using tools such as a wrench, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0016] Figure 1 : Exploded view of the structure of the utility model;

[0017] Figure 2 : Schematic diagram of the structure of the utility model;

[0018] Figure 3: Schematic diagram of the assembly of the utility model;

[0019] Figure 4 : Schematic diagram of hook and pressure plate assembly;

[0020] In the figure: 1. hook; 2. pressure plate; 3. internal thread; 4. screw; 5. PVC pipe; 6. wooden beam; 7. bolt; 8. I-shaped clip; 9. upper plate reinforcement; 10. core mold; 11. floor bottom plate; 12. bending part; 13. boss; 14. through hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution, design method and advantages of the utility model clearer, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] like Figure 1 and Figure 2 As shown, the utility model provides a device for fixing a core mold for pouring concrete, which is installed between two adjacent core molds 10 in a large-span floor, and is used to fix the position of the core mold 10, including: a hook 1 and a screw 4, a pressure plate 2 is sleeved on the hook 1, and an internal thread 3 adapted to the screw 4 is provided at the bottom of the hook 1; during assembly, the top of the screw 4 is screwed into the internal thread 3, the bottom of the screw 4 passes through the floor bottom plate 11, and an I-shaped buckle 8 is provided at the bottom of the screw 4, and the I-shaped buckle 8 is threadedly connected to the screw 4; a PVC pipe 5 is also sleeved on the screw 4, the top of the PVC pipe 5 abuts against the pressure plate 2, and the bottom of the PVC pipe 5 abuts against the floor bottom plate 11. As shown Figure 3 As shown, during construction, the hook 1 is hung on the upper plate reinforcement 9 of the large-span floor, and the bent portion 12 of the hook 1 is in contact with the top of the pressing plate 2, and the bottom of the pressing plate 2 is in contact with the tops of two adjacent core molds 10. The portion of the screw 4 extending out of the floor bottom plate 11 is tightened by the I-shaped buckle 8, so that the core mold 10 can maintain a stable position in the face of the buoyancy and lateral force generated by the flow of liquid concrete, thereby ensuring the dimensional accuracy and quality stability of the structure after concrete pouring. When the concrete is poured and solidified, the I-shaped buckle 8 can be unscrewed. Since the PVC pipe 5 is provided on the outer sleeve of the screw 4, the screw 4 is not solidified with the concrete, and the screw 4 can be unscrewed from the internal thread 3 of the hook 1 to achieve reuse, reducing engineering costs.

[0023] In order to further ensure the stability of the core mold 10 , a wooden beam 6 is sleeved on the bottom of the screw rod 4 , the top of the wooden beam 6 abuts against the floor bottom plate 11 , and the bottom of the wooden beam 6 abuts against the I-shaped buckle 8 .

[0024] In order to facilitate the screw rod 4 to be screwed out from the internal thread 3 of the hook 1, a bolt 7 is provided at the bottom of the screw rod 4. The bolt 7 is fixedly connected to the screw rod 4, and the screw rod 4 can be easily removed by tools such as a wrench, thereby improving construction efficiency.

[0025] like Figure 4 As shown, in order to ensure the stability of the pressure plate 2, a boss 13 is turned upward at the bottom of the hook 1, wherein the top of the boss 13 is flush with the bottom of the bent portion 12 of the hook 1, and a through hole 14 is opened on the pressure plate 2, and the diameter of the through hole 14 is adapted to the boss 13, so that the top of the pressure plate 2 abuts against the boss 13, and the bottom of the bent portion 12 abuts against the pressure plate 2, thereby ensuring the stability of the pressure plate 2.

[0026] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A concrete pouring core mold fixing device, installed between two adjacent core molds (10) in a large-span floor slab, used to fix the position of the core mold (10), characterized in that: include: A hook (1) and a screw rod (4), wherein a pressure plate (2) is sleeved on the hook (1), and an internal thread (3) adapted to the screw rod (4) is provided at the bottom of the hook (1); the top of the screw rod (4) is connected to the internal thread (3), the bottom of the screw rod (4) penetrates the floor bottom plate (11), and an I-shaped buckle (8) is provided at the bottom of the screw rod (4), and the I-shaped buckle (8) is threadedly connected to the screw rod (4); A PVC tube (5) is also sleeved on the screw rod (4), the top of the PVC tube (5) abuts against the pressing plate (2), and the bottom of the PVC tube (5) abuts against the floor bottom plate (11).

2. A concrete pouring core mold fixing device according to claim 1, characterized in that: A wooden beam (6) is sleeved on the bottom of the screw rod (4), the top of the wooden beam (6) abuts against the floor bottom plate (11), and the bottom of the wooden beam (6) abuts against the I-shaped buckle (8).

3. A concrete pouring core mold fixing device according to claim 1, characterized in that: A bolt (7) is provided at the bottom of the screw rod (4); the bolt (7) is fixedly connected to the screw rod (4) and is used for disassembling the screw rod (4).

4. A concrete pouring core mold fixing device according to claim 1, characterized in that: The bottom of the hook (1) is provided with a boss (13) upwardly, the top of the boss (13) is flush with the bottom of the bent portion (12) of the hook (1), and a through hole (14) is provided on the pressing plate (2), the diameter of the through hole (14) being adapted to the boss (13), so that the top of the pressing plate (2) abuts against the boss (13).

5. A concrete pouring core mold fixing device according to claim 4, characterized in that: The hook (1) is hooked on the upper plate reinforcement (9) of the large-span floor slab, and the bent portion (12) of the hook (1) abuts against the top of the pressing plate (2), and the bottom of the pressing plate (2) abuts against the tops of two adjacent core molds (10).

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