Reinforcing steel bar protective layer cushion block for concrete structure

Abstract

The utility model discloses a reinforcing steel bar protective layer cushion block for a concrete structure, which comprises a first module and a second module, the first module comprises a first base and four plug-in cylinders formed by extending upwards from the first base, and the middle parts of the four plug-in cylinders enclose to form a cross-shaped channel for placing reinforcing steel bars in a cross manner; the second module comprises a second base and four inserting columns formed by extending downwards from the second base, the inserting columns are inserted into the inserting cylinders, then the inserting cylinders abut against the second base, and the inserting columns are in interference fit with the inserting cylinders. Through the matching of the inserting columns and the inserting cylinders of the first module and the second module, the reinforcing steel bar can be directly and vertically locked among the four inserting cylinders, other tools are not needed, the structure is simple, the operation is convenient, the construction efficiency can be effectively improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and more specifically to a reinforcement protective layer pad for a concrete structure. Background Art

[0002] The thickness of the concrete cover of the steel bar refers to the distance from the concrete surface to the outer edge of the nominal diameter of the outermost steel bar. If the thickness of the concrete cover is too large, the calculated geometric dimensions of the component will be too small, affecting the bearing capacity of the component; if the thickness of the concrete cover is too small, the steel bar will be exposed after the concrete is poured, and then the carbonization of the concrete will cause corrosion of the steel bar, thus affecting the appearance and durability of the component. The minimum thickness of the concrete cover is related to the environmental category. Generally, the concrete structure is in a type of environment, that is, an indoor dry environment or a non-corrosive static water immersion environment. In this environment, the minimum thickness of the concrete cover of the cast-in-place slab is 15mm.

[0003] The common practice for controlling the thickness of the concrete protective layer of the steel bars at the bottom and surface of the slab in construction projects is to use cement pads to control the thickness of the concrete protective layer of the steel bars at the bottom of the slab, and to use steel saddles to control the thickness of the concrete protective layer of the steel bars at the surface of the slab. However, the effect is not ideal. The strength of the cement pads at the bottom of the slab is low and it is easy to break, resulting in the concrete protective layer thickness of the steel bars not meeting the requirements and exposed steel bars. At the same time, steel bars are used to control the concrete protective layer of the steel bars on the surface of the slab, resulting in a large amount of steel bars wasted, and the excessive load on the local steel bars can easily bend the steel bars, affecting the quality of construction.

[0004] In order to ensure that the thickness of the concrete protective layer of the steel bars meets the requirements, the commonly used technical solution in the prior art is, for example, the invention patent "A cast-in-place concrete slab steel bar protective layer pad" with patent application number CN201910338885.9 discloses a cast-in-place concrete slab steel bar protective layer pad, comprising an upper cross-shaped through groove, a middle pad, and a lower cross-shaped through groove, wherein the upper cross-shaped through groove is located at the upper layer of the steel bar protective layer pad, and is formed by four upper top columns of the same size on all sides, the lower cross-shaped through groove is located at the bottom layer of the steel bar protective layer pad, and is formed by four lower bottom feet of the same size on all sides, the middle pad is located between the upper bottom plate and the lower top plate, the thickness of the middle pad is adjusted as needed, and the cross-sectional size of the middle pad is 70mm*70mm; wherein: the upper layer, middle layer, and bottom layer of the steel bar protective layer pad are an integrated concrete structure, which are formed by mixing and pouring concrete with an appropriate amount of iron filings. The cast-in-place concrete slab reinforcement protective layer pad of the present invention has the advantages of simple structure, easy manufacture, and the ability to efficiently and accurately control the thickness of the concrete protective layer of the slab reinforcement, and the protective layer pad can avoid damage and breakage during actual use.

[0005] However, in the actual use process, since multiple steel bar protective layer pads are required for the concrete protective layer of a layer of steel bars. The upper cross groove in the prior art is arc-shaped. If the arc-shaped opening is too large, it is convenient for the placement of steel bars, while if the arc-shaped opening is too small, it is difficult to control the insertion of steel bars. Generally, a cross groove with a large opening is selected for the pad. However, at the nodes where steel bars are交错, it is necessary to use components such as steel wires to clamp the steel bars. It is difficult for the two steel bars clamped by the steel wire to achieve an ideal perpendicular intersection, and the placed steel bars may脱离 the pad during the later work due to the too large arc-shaped opening. Utility Model Content

[0006] In order to overcome the problem that in the prior art, at the nodes where steel bars are交错, it is necessary to use components such as steel wires to clamp the steel bars. It is difficult for the two steel bars clamped by the steel wire to achieve an ideal perpendicular intersection, and the placed steel bars may脱离 the pad during the later work due to the too large arc-shaped opening, the present utility model provides a steel bar protective layer pad for a concrete structure.

[0007] The technical solution of the present utility model is as follows:

[0008] A steel bar protective layer pad for a concrete structure, comprising a first module and a second module;

[0009] The first module includes a first base and four insertion cylinders extending upward from the first base. The middle parts of the four insertion cylinders enclose a cross channel for cross-placing steel bars;

[0010] The second module includes a second base and four insertion columns extending downward from the second base. After the insertion columns are inserted into the insertion cylinders, the insertion cylinders are in contact with the second base, and the insertion columns and the insertion cylinders are in interference fit.

[0011] According to the present utility model of the above solution, the insertion columns of the second base extend upward and are reversely inserted into the insertion cylinders of another first module.

[0012] According to the present utility model of the above solution, the cross section of the first base is in the shape of a "hui" character or a "tian" character.

[0013] According to the present utility model of the above solution, the cross section of the second base is in the shape of a "hui" character or a "tian" character.

[0014] According to the present utility model of the above solution, the insertion column is a hollow structure inside.

[0015] According to the present utility model of the above solution, the top view projection of the first module is a square, and the insertion cylinders are respectively arranged at the four corners of the square.

[0016] According to the utility model of the above solution, the second module is projected into a square in top view, and the plug-in posts are respectively arranged on the four corners of the square.

[0017] Furthermore, an arc-shaped groove is provided on an end surface of the first base away from the plug-in cylinder.

[0018] Furthermore, an arc-shaped groove is provided on an end surface of the second base away from the plug-in column.

[0019] Furthermore, the first module and the second module are both made of plastic.

[0020] The utility model according to the above scheme has the beneficial effect that the utility model can directly lock the steel bars vertically between the four plug-in tubes through the cooperation of the plug-in columns and the plug-in tubes of the first module and the second module, without the need for other tools, and has a simple structure and is easy to operate. It can effectively improve construction efficiency and reduce the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the first module of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the first module of the utility model from another perspective;

[0024] Figure 4 It is a structural schematic diagram of the second module of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the second module of the utility model from another perspective;

[0026] Figure 6 It is a structural diagram of embodiment 2.

[0027] In the drawings, the reference numerals are as follows:

[0028] 1. First module; 11. First base; 12. Connecting tube; 13. Cross channel;

[0029] 2. Second module; 21. Second base; 22. Connecting column. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. Terms such as "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "bottom", etc. are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0032] like Figure 1-Figure 5 As shown, a steel bar protective layer pad for concrete structure includes a first module 1 and a second module 2. After the cross steel bars are vertically arranged in the cross channel 13 in the first module 1, the second module 2 is plugged into the first module 1 to lock the steel bars on the first module 1 to prevent the steel bars from detaching from the steel bar protective layer pad.

[0033] Specifically, the first module 1 includes a first base 11 and four plug-in tubes 12 extending upward from the first base 11, and the middle parts of the four plug-in tubes 12 enclose a cross channel 13 for cross-placing steel bars; when placing steel bars, two steel bars are cross-placed between the plug-in tubes 12 of the first module 1, and the two crossed steel bars are kept vertical at the cross channel 13 under the action of the plug-in tubes 12; the second module 2 includes a second base 21 and four plug-in columns 22 extending downward from the second base 21, and the plug-in tube 12 abuts against the second base 21 after the plug-in column 22 is plugged into the plug-in tube 12, and the plug-in column 22 and the plug-in tube 12 are interference-fitted, so that the first module 1 and the second module 2 are connected and the steel bars are locked between the four plug-in tubes 12 to prevent the steel bars from detaching from the steel bar protective layer pad. If it is a single steel bar, it can be placed between adjacent plug-in tubes 12 of the first module 1 or between adjacent plug-in columns 22 of the second module 2. This device is suitable for fixing a single steel bar, and can also be used for fixing multiple steel bars.

[0034] The utility model can effectively lock the steel bar vertically at a desired position to prevent it from moving or tilting through the cooperation between the plug-in tube 12 and the plug-in column 22 of the first module 1 and the second module 2.

[0035] The device is not only suitable for fixing a single steel bar, but also can be used for fixing multiple steel bars, and has high flexibility.

[0036] The device has a simple structure and is easy to operate, and can effectively improve construction efficiency and reduce the labor intensity of workers.

[0037] The use of this device can reduce reliance on traditional cross-rebar fixing methods, thereby reducing construction costs.

[0038] In the second embodiment, Figure 6 As shown, the plug-in column 22 of the second base 21 extends upward and is reversely plugged into the plug-in tube 12 of another first module 1, and the plug-in column 22 of another second module 2 is plugged into the plug-in tube 12 of another module, so that the connection of multiple first modules 1 and second modules 2 can be realized, and it can be suitable for different layers of crossed steel bars. The height of the first base 11 and the second base 21 can be customized as needed.

[0039] In one embodiment, Figure 1-Figure 5 As shown, in order to reduce the deadweight of the steel bar protective layer pad, the interior of the first base 11 is set as a hollow structure, the interior of the second base 21 is set as a hollow structure, and the plug-in column 22 is an internal hollow structure. In a preferred embodiment, a "well"-shaped support bar or a "cross"-shaped support bar is provided inside the first base 11 to support the first base 11 while reducing the deadweight of the first base 11. A "well"-shaped support bar or a "cross"-shaped support bar is provided inside the second base 21 to support the second base 21 while reducing the deadweight of the first base 11.

[0040] In one embodiment, Figure 1-Figure 5 As shown, the first module 1 is projected as a square in a top view, and the plug-in barrels 12 are respectively arranged at the four corners of the square. Each plug-in barrel 12 extends upward, and its top is connected to the first base 11. In the center of the square, the middle parts of the four plug-in barrels 12 enclose a cross channel 13 for cross-placing steel bars. Two steel bars cross vertically at the cross channel 13 and remain vertical under the action of the plug-in barrels 12.

[0041] The second module 2 is projected as a square in top view, and the plug-in columns 22 are respectively arranged at the four corners of the square. The plug-in columns 22 extend downward, and the bottoms thereof are connected to the second base 21. When the plug-in columns 22 of the second module 2 are inserted into the plug-in barrels 12 of the first module 1, the plug-in barrels 12 abut against the second base 21, forming a stable structure. The plug-in columns 22 and the plug-in barrels 12 are fitted with interference fit, so that they can fit together tightly, thereby firmly locking the steel bars between the four plug-in barrels 12. This structure has high stability and can effectively improve construction efficiency and quality.

[0042] In a preferred embodiment, if Figure 1-Figure 5As shown, an arc groove is provided on one end face of the first base 11 away from the plug-in barrel 12, and an arc groove is provided on one end face of the second base 21 away from the plug-in column 22. The grooves are designed to better accommodate steel bars of different shapes and sizes so that the steel bars can be stably placed in the grooves. The shape and size of the arc grooves match the shape and size of the plug-in barrel 12, so that the steel bars can be stably fixed in the grooves.

[0043] The first module 1 and the second module 2 are made of plastic. The first module 1 and the second module 2 made of plastic make the whole device light, durable and low-cost. The plastic material also has good corrosion resistance, can adapt to different environmental conditions, and is easy to clean and maintain. At the same time, due to the good elasticity of plastic, when the steel bar is inserted into the plug-in tube 12 or the plug-in column 22, the plastic material can play a certain buffering role to protect the steel bar from damage.

[0044] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0045] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A steel bar protective layer pad for a concrete structure, characterized in that: comprising a first module and a second module; The first module includes a first base and four plug-in tubes extending upward from the first base, wherein the middle parts of the four plug-in tubes form a cross channel for cross-placing steel bars; The second module includes a second base and four plug-in posts extending downward from the second base. After the plug-in posts are plugged into the plug-in tube, the plug-in tube abuts against the second base, and the plug-in posts are interference-fitted with the plug-in tube.

2. A steel bar protective layer pad for concrete structure according to claim 1, characterized in that: The plug-in column of the second base extends upward and is plugged into the plug-in tube of another first module in reverse direction.

3. A steel bar protective layer pad for concrete structure according to claim 1 or 2, characterized in that: A "well"-shaped or "cross"-shaped support bar is provided inside the first base.

4. A steel bar protective layer pad for concrete structure according to claim 3, characterized in that: A "well"-shaped or "cross"-shaped support bar is provided inside the second base.

5. A steel bar protective layer pad for concrete structure according to claim 4, characterized in that: The plug-in column is an internal hollow structure.

6. A steel bar protective layer pad for concrete structure according to claim 5, characterized in that: The first module is projected into a square in a top view, and the plug-in sleeves are respectively arranged on the four corners of the square.

7. A steel bar protective layer pad for concrete structure according to claim 6, characterized in that: The second module is projected into a square in a top view, and the plug-in posts are respectively arranged on the four corners of the square.

8. The steel bar protective layer pad for concrete structure according to claim 1, characterized in that: An arc-shaped groove is provided on an end surface of the first base away from the plug-in cylinder.

9. The steel bar protective layer pad for concrete structure according to claim 1, characterized in that: An arc-shaped groove is disposed on an end surface of the second base away from the plug-in column.

10. The steel bar protective layer pad for concrete structure according to claim 1, characterized in that: The first module and the second module are both made of plastic.

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