Concrete floor hogging moment steel bar positioning and protective layer thickness control device

Abstract

The utility model discloses a concrete floor hogging moment steel bar positioning and protective layer thickness control device, which belongs to the technical field of building construction, and adopts the technical scheme that the concrete floor hogging moment steel bar positioning and protective layer thickness control device comprises a rectangular frame enclosed by four rod bodies with circular cross sections, and supporting legs are fixedly arranged below corners of the rectangular frame; a plurality of reinforcing steel bar limiting rods are arranged on two opposite rod bodies in the axis direction of the rod bodies, every two reinforcing steel bar limiting rods form a group, and the distance between the two reinforcing steel bar limiting rods in each group is the same; the outer diameter of the rod body is equal to the thickness of the protective layer. The reinforcing steel bar limiting device has the advantages that the reinforcing steel bar limiting device can be completely made of steel pipes, the whole reinforcing steel bar limiting device is firm and can be treaded, the height can be adjusted according to actual conditions, and the distance between the reinforcing steel bar limiting rods can also be adjusted according to requirements; the outer diameter of the rod body is equal to the thickness of a protective layer on the upper portion of the concrete slab, use is convenient, reuse can be achieved, the layer can be used for the next layer after being used, and resources are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a device for positioning negative bending moment steel bars of a concrete floor and controlling the thickness of a protective layer. Background Art

[0002] Rebar engineering is a key control project in the structural construction stage and an important factor affecting construction quality. However, inadequate control of its protective layer is a common problem in the construction process. Since it is a hidden project, it is easily overlooked and quality control is not optimistic. At present, concrete protective layer quality problems are relatively common in construction.

[0003] Steel bars are known as the bones of concrete engineering and play a vital role in the safety of structures. The control of the steel bar protective layer is an important factor that directly affects the safety of the structure. It has a direct impact on the effective height of the component's force, the bonding and anchoring of the steel bars and concrete, and the durability of the steel bars. Otherwise, the durability of the structure will be reduced, which is related to the safety and service life of the building.

[0004] Most of the existing technical solutions are in the form of stirrups or pads, which are consumables and cannot be reused. In addition, the stirrups are easily deformed and lose their function during use. Utility Model Content

[0005] The utility model aims to provide a device for positioning negative moment reinforcement bars of concrete slabs and controlling the thickness of protective layers.

[0006] The utility model is realized by the following measures: a device for positioning negative moment reinforcement bars of concrete slabs and controlling the thickness of protective layers, characterized in that it comprises a rectangular frame surrounded by four rods with circular cross-section shapes, and support legs are fixedly arranged below the corners of the rectangular frame;

[0007] A plurality of steel bar limiting rods are arranged on two of the rod bodies along the axis direction of the rod bodies, and the two steel bar limiting rods form a group and the distance between the two steel bar limiting rods in each group is the same;

[0008] The outer diameter of the rod body is equal to the thickness of the protective layer.

[0009] The supporting leg is a telescopic structure. The telescopic structure can be in the form of an inner rod and an outer rod, the upper end of the outer rod is fixed on the rectangular frame, the inner rod is plugged into the outer rod, a connecting hole is provided through the lower part of the side wall of the outer rod, a plurality of connecting holes are provided on the inner rod along the axial direction, and the inner rod and the outer rod are fixed by bolts passing through the connecting holes and the mounting holes.

[0010] The rod body is provided with a plurality of adjustment holes evenly distributed along the axial direction of the rod body, the steel bar limiting rod is inserted into the adjustment holes, and a detachable limiter is provided on the upper part of the steel bar limiting rod. The adjustment holes can be used to adjust the distance between two steel bar limiting rods in the same group to adapt to negative bending moment steel bars with different outer diameters.

[0011] The limiting member is a nut arranged on the steel bar limiting rod through a threaded connection; or a bolt or a pin radially penetrating the steel bar limiting rod.

[0012] The other two opposite rod bodies are connected via a plurality of support rods, and the bottoms of the side walls of the support rods are higher than the bottoms of the side walls of the rod bodies.

[0013] The rectangular frame, telescopic structure and support rod can all be made of steel pipes.

[0014] There are several rectangular frames with different outer diameters, and the support legs are detachably connected to the rectangular frames, such as threaded or bolted. According to different requirements for the thickness of the upper protective layer of the concrete slab, rectangular frames with different diameters can be used.

[0015] Directions:

[0016] The first step is to select a rod with the same outer diameter as the thickness of the protective layer (for example, if the thickness of the protective layer is 15cm, a rod with a diameter of 15 should be used to make a rectangular frame), place it at the position where the thickness of the protective layer needs to be controlled, and adjust it to the same height as the thickness of the floor slab through the supporting legs and tighten it with bolts (that is, the concrete pouring height is the same as the upper epithelial height of the rectangular frame).

[0017] The second step is to insert the steel bar limiting rods into the corresponding holes on the upper part of the rectangular frame according to the position of the negative bending moment steel bars under the rectangular frame. Two steel bar limiting rods clamp one negative bending moment steel bar. After all the negative bending moment steel bars are positioned, tighten them with screws.

[0018] The third step is to tie and fix the upper negative bending moment reinforcement to the main body.

[0019] In the fourth step, workers step on the rectangular frame when pouring concrete. It is strictly forbidden to step on the steel bars. Stop pouring after the concrete just reaches the main epithelium.

[0020] Step 5. After pouring this area, untie the negative bending moment steel bars fixed on the rectangular frame, take out the device, level the surface concrete, and it is strictly forbidden to step on the steel bars here before the concrete solidifies.

[0021] Step 6: Rinse the device and save it for next use.

[0022] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: the device can be made entirely of steel pipes, the whole is firm and can be stepped on, the height can be adjusted according to actual conditions, and the spacing of the steel bar limiting rods can also be adjusted according to requirements; the outer diameter of the rod body is the thickness of the upper protective layer of the concrete slab, it is easy to use and reusable, and the current layer can be used for the next layer after use, saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction will be given to the drawings used in the embodiments below. Obviously, the drawings listed below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0026] In the attached drawings, the components represented by the various reference numerals are listed as follows: 1. rectangular frame; 2. support leg; 3. steel bar limiting rod; 4. limiting member; 5. support rod; 201. outer rod; 202. inner rod; 203. bolt. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] Embodiment 1:

[0029] See also Figure 1 , a device for positioning negative moment reinforcement and controlling the thickness of protective layer of concrete floor, characterized in that it comprises a rectangular frame 1 surrounded by four rods with circular cross-sections, and support legs 2 are fixedly arranged below the corners of the rectangular frame 1;

[0030] A plurality of steel bar limiting rods 3 are arranged on two of the rod bodies along the axis direction of the rod bodies, and the two steel bar limiting rods 3 form a group and the distance between the two steel bar limiting rods 3 in each group is the same;

[0031] The outer diameter of the rod is equal to the thickness of the protective layer.

[0032] Embodiment 2:

[0033] See also Figure 2On the basis of the first embodiment, the support leg 2 is a telescopic structure. The telescopic structure can be in the form of an inner rod 202 and an outer rod 201, the upper end of the outer rod 201 is fixed on the rectangular frame 1, the inner rod 202 is plugged into the outer rod 201, a connection hole is provided through the lower part of the side wall of the outer rod 201, a plurality of connection holes are provided on the inner rod 202 along the axial direction, and the inner rod 202 and the outer rod 201 are fixed by bolts 203 passing through the connection holes and the mounting holes.

[0034] A plurality of adjustment holes are evenly distributed on the rod body along the axial direction of the rod body, and the steel bar limiting rod 3 is inserted into the adjustment hole and limited by the limiter 4 arranged on the upper part of the steel bar limiting rod 3. The adjustment hole can be used to adjust the distance between two steel bar limiting rods 3 in the same group to adapt to negative bending moment steel bars with different outer diameters.

[0035] The limiting member 4 is a nut that is threadedly connected to the steel bar limiting rod 3 ; or a bolt or a pin that radially penetrates the steel bar limiting rod 3 .

[0036] The other two opposing rod bodies are connected via a plurality of support rods 5, and the bottom of the side wall of the support rod 5 is higher than the bottom of the side wall of the rod body.

[0037] The rectangular frame 1, the telescopic structure and the support rod 5 can all be made of steel pipes.

[0038] There are several rectangular frames 1 with different outer diameters, and the support legs 2 and the rectangular frames 1 are detachably connected, such as threaded connection or bolt 203. Rectangular frames 1 with different diameters can be used according to different requirements for the thickness of the upper protective layer of the concrete slab.

[0039] Directions:

[0040] The first step is to select a rod with the same outer diameter as the thickness of the protective layer (for example, if the thickness of the protective layer is 15 cm, a rod with a diameter of 15 cm should be used to make the rectangular frame 1), place it at the position where the thickness of the protective layer needs to be controlled, and adjust it to the same height as the thickness of the floor slab through the support leg 2 and tighten it with bolt 203 (that is, the concrete pouring height is the same as the upper epithelial height of the rectangular frame 1)

[0041] The second step is to insert the steel bar limiting rods into the corresponding holes on the upper part of the rectangular frame 1 according to the position of the negative bending moment steel bars under the rectangular frame 1. Two steel bar limiting rods clamp one negative bending moment steel bar. After all the negative bending moment steel bars are positioned, tighten them with screws.

[0042] The third step is to tie and fix the upper negative bending moment reinforcement to the main body.

[0043] In the fourth step, workers step on the rectangular frame 1 to pour concrete, and are strictly prohibited from stepping on the steel bars. The concrete is poured until it just reaches the main body epithelium and then stops pouring.

[0044] Step 5. After pouring this area, untie the negative bending moment reinforcement fixed on the rectangular frame 1, take out the device, level the surface concrete, and it is strictly forbidden to step on the reinforcement here before the concrete solidifies.

[0045] Step 6: Rinse the device and save it for next use.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for positioning negative moment reinforcement and controlling the thickness of protective layer of a concrete floor, characterized in that: It comprises a rectangular frame surrounded by four rods with circular cross-sections, and support legs are fixedly arranged below the corners of the rectangular frame; A plurality of steel bar limiting rods are arranged on two of the rod bodies along the axis direction of the rod bodies, and the two steel bar limiting rods form a group and the distance between the two steel bar limiting rods in each group is the same; The outer diameter of the rod body is equal to the thickness of the protective layer.

2. The device for positioning negative moment reinforcement and controlling protective layer thickness of a floor slab according to claim 1 is characterized in that: The supporting legs are telescopic structures.

3. The device for positioning negative moment reinforcement and controlling protective layer thickness of a floor slab according to claim 1 is characterized in that: The rod body is evenly provided with a plurality of adjustment holes along the axial direction of the rod body, the steel bar limiting rod is inserted into the adjustment holes, and a detachable limiting piece is arranged on the upper part of the steel bar limiting rod.

4. The device for positioning negative moment reinforcement and controlling protective layer thickness of a floor slab according to claim 3 is characterized in that: The limiting member is a nut arranged on the steel bar limiting rod through a threaded connection; or a bolt or a pin radially penetrating the steel bar limiting rod.

5. The device for positioning negative moment reinforcement and controlling protective layer thickness of a floor slab according to claim 1, characterized in that: The other two opposite rod bodies are connected via a plurality of support rods, and the bottoms of the side walls of the support rods are higher than the bottoms of the side walls of the rod bodies.

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