Floor slab thickness and protective layer thickness control device
By designing a floor slab thickness and protective layer thickness control device including a tree frame, the problem of double-layer steel bar spacing control at the construction site is solved, the uniformity of floor slab thickness and protective layer thickness is achieved, and the construction accuracy and steel bar installation quality are improved.
Patent Information
- Application Number
- CN202420919650.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-29
Smart Images

Figure CN222456569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of floor slab thickness and protective layer thickness control devices, and in particular to a floor slab thickness and protective layer thickness control device. Background Technology
[0002] On construction sites, controlling the spacing between the upper and lower reinforcing bars in the double-layer reinforcement binding of building and roof slabs is a technical challenge. Due to complex construction conditions and limited operating space, workers often struggle to accurately control the spacing between the two layers of reinforcing bars, leading to deviations between the actual spacing and design requirements. This problem is further amplified during the pouring process, as the thickness variation in different locations can be significant, resulting in uneven thickness control across the entire floor slab. Uneven slab thickness not only affects the load-bearing capacity and service life of the floor slab but can also pose safety hazards. Furthermore, the overall construction quality is severely compromised.
[0003] Therefore, it is necessary to provide a device for controlling the thickness of floor slabs and protective layers to solve the above-mentioned technical problems. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a device for controlling the thickness of floor slabs and protective layers.
[0005] This utility model provides a floor slab thickness and protective layer thickness control device, including a tree-shaped frame. The bottom of the tree-shaped frame is provided with a flat part that contacts the wooden base plate. The side wall of the tree-shaped frame is provided with a first protrusion and a second protrusion. The bottom of the first protrusion is flush with the bottom of the tree-shaped frame. The top of the first protrusion and the second protrusion are respectively provided with a lower layer rib support groove and an upper layer rib support groove, and both the upper layer rib support groove and the lower layer rib support groove are semi-circular.
[0006] Preferably, the upper rib support groove and the lower rib support groove are on the same vertical line.
[0007] Preferably, the bottom of the second protrusion is provided with an inclined reinforcing portion.
[0008] Preferably, both the lower and upper rib support grooves have chamfered entrances.
[0009] Preferably, the tree-like frame is a steel component.
[0010] Compared with related technologies, the present invention provides the following beneficial effects:
[0011] Improved construction precision: This device can help ensure the thickness and flatness of building materials (such as concrete), thereby improving construction precision and quality.
[0012] Improve the appearance quality of steel reinforcement installation: The upper and lower steel reinforcements of the floor slab are located on the same vertical plane, resulting in a neat and beautiful installation effect and improving the first-time acceptance rate.
[0013] The height of the tree-like frame corresponds to the thickness of the floor slab. The distance between the upper steel mesh and the top of the tree-like frame is the thickness of the upper floor slab protective layer. The distance between the lower steel mesh and the bottom of the tree-like frame is the thickness of the lower floor slab protective layer. By setting up tree-like frames of corresponding dimensions, the floor slab thickness and protective layer thickness control devices can meet the national standards for floor slab load-bearing capacity construction. 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 showing the relative positions of the planar parts of this utility model;
[0016] Figure 3 This is the front view of the present invention.
[0017] The diagram is labeled as follows: 1. Tree-like frame; 2. Flat part; 3. First protrusion; 4. Second protrusion; 5. Lower layer rib support groove; 6. Upper layer rib support groove; 7. Reinforcing part; 8. Chamfer. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Please refer to the following: Figures 1 to 3 This is a device for controlling the thickness of floor slabs and protective layers, the main body of which is a tree-shaped frame 1. This tree-shaped frame 1 is made of steel, thus possessing very high strength. The bottom of the tree-shaped frame 1 is designed with a flat portion 2 that directly contacts the wooden base plate, ensuring its stable placement.
[0020] On the side wall of the tree-like frame 1, we can clearly see two protruding parts: a first protrusion 3 and a second protrusion 4. It is worth noting that the bottom of the first protrusion 3 is completely flush with the bottom of the tree-like frame 1. At the top of these two protrusions, semi-circular lower reinforcement support grooves 5 and upper reinforcement support grooves 6 are respectively provided. Both grooves are designed to support and fix the reinforcing bars.
[0021] Of particular note is that both the lower reinforcement support groove 5 and the upper reinforcement support groove 6 have chamfered corners 8 at their entrances. This design effectively reduces wear and improves the durability of the reinforcement. Furthermore, the placement of these two support grooves is ingeniously designed, ensuring not only that the placed reinforcement remains neat but also that the protective layer thickness of the bottom and top reinforcement bars in the floor slab fully meets building requirements.
[0022] Another noteworthy detail is that the upper reinforcement support groove 6 and the lower reinforcement support groove 5 are located on the same vertical line. This means that the upper and lower reinforcement bars of the floor slab will be located on the same vertical plane. This design not only makes the installation of the reinforcement bars look neat and beautiful, but also greatly improves the pass rate of first-time acceptance.
[0023] To further enhance the strength of the second protrusion 4, a sloping reinforcing part 7 has been added to its bottom. This design undoubtedly provides more stable support for the entire device.
[0024] It is important to emphasize that when pouring the floor slab, formwork must be erected first, that is, the wooden base board is supported by scaffolding, and an upper layer of steel mesh and a lower layer of steel mesh are set on the wooden base board. Both the upper and lower layers of steel mesh are made of crisscrossing steel bars tied together with steel wire. Then the concrete is poured, and the scaffolding and wooden floor are removed after the concrete has completely solidified.
[0025] There are various sizes of reinforcing bars. When the diameter of the reinforcing bar is 10mm, the distance from the bottom of the upper reinforcing bar support groove 6 to the top of the tree-like frame is 36mm. Since the reinforcing mesh is set with the lower and upper reinforcing bars intersecting, the protective layer thickness of the upper reinforcing mesh is 36mm - 20mm = 16mm. The distance from the bottom of the lower reinforcing bar support groove 5 to the bottom of the tree-like frame is 15mm, that is, the protective layer thickness of the lower reinforcing mesh is 15mm. The distance between the bottom of the upper reinforcing bar support groove 6 and the bottom of the lower reinforcing bar support groove 5 is 69mm.
[0026] Due to varying load-bearing requirements and corresponding slab thicknesses, tree-like frames of varying heights are needed, requiring steel bars of varying thicknesses to form a reinforcing mesh. This ensures that the thickness of the protective layers above and below the reinforcing mesh is met.
[0027] [Specific steps]
[0028] 1. Review the drawings for floor slab reinforcement design requirements, slab thickness, concrete strength, slab thickness, protective layer thickness, and other parameters;
[0029] 2. Based on the calculated data, design a tree-shaped frame that is reasonably stressed, aesthetically pleasing, and practical using CAD.
[0030] 3. Send the design drawings to the manufacturer to customize the pads.
[0031] 4. When using on site, place the control device before binding the upper and lower layers of reinforcing bars: place the lower layer of reinforcing bars in the lower layer support groove 5, and place the upper layer of reinforcing bars in the upper layer support groove 6. Ensure that 4 or more spacers are set per square meter. Additional spacers can be added in areas where stress is concentrated, depending on the on-site construction conditions.
[0032]
Process Flow
[0033] Review parameters → Determine the solution → Design drawings → Manufacturer customization → On-site use
[0034] 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 content of this utility model specification and drawings, 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 floor thickness and protective layer thickness control device, characterized in that: The invention comprises a tree-shaped frame (1), wherein the bottom of the tree-shaped frame (1) is provided with a flat surface portion (2) in contact with a wooden bottom plate, the side wall of the tree-shaped frame (1) is provided with a first convex portion (3) and a second convex portion (4), and the bottom of the first convex portion (3) is flush with the bottom of the tree-shaped frame (1), and the tops of the first convex portion (3) and the second convex portion (4) are respectively provided with a lower rib support groove (5) and an upper rib support groove (6), and both the upper rib support groove (6) and the lower rib support groove (5) are semicircular.
2. A floor slab thickness and protective layer thickness control device according to claim 1, characterized in that: The upper rib support groove (6) and the lower rib support groove (5) are located on the same vertical line.
3. A floor thickness and protective layer thickness control device according to claim 1, characterized in that: The bottom of the second protrusion (4) is provided with an inclined reinforcement portion (7).
4. A floor thickness and protective layer thickness control device according to claim 1, characterized in that: The entrances of the lower rib support groove (5) and the upper rib support groove (6) are both provided with chamfers (8).
5. A floor slab thickness and protective layer thickness control device according to claim 1, characterized in that: The tree-shaped frame (1) is a steel component.