A reinforced concrete floor thickness and reinforcement cover thickness controller

Abstract

The application discloses a reinforced concrete floor thickness and reinforcing steel bar protective layer thickness controller, which comprises a lower fixing part, an upper fixing part and an adjusting stud; the lower fixing part comprises a lower supporting plate, a lower threaded cylinder arranged on the lower supporting plate and used for being connected with the adjusting stud and a supporting leg arranged at the lower end of the lower supporting plate; the upper fixing part comprises an upper supporting plate and an upper threaded cylinder arranged on the upper supporting plate and used for being connected with the adjusting stud; the lower supporting plate and the upper supporting plate are respectively used for supporting a lower layer reinforcing mesh and an upper layer reinforcing mesh, and the vertical projection areas of the lower supporting plate and the upper supporting plate are all greater than the minimum mesh area of the reinforcing mesh. The application realizes height adjustment of the upper and lower reinforcing layers, further locks the positions of the reinforcing layers, improves the structural stability and anti-deformation capability of the reinforcing layers, improves the forming quality of the reinforced concrete floor, is convenient to install, has low manufacturing cost, improves construction efficiency, shortens construction period and reduces labor cost.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a controller for the thickness of reinforced concrete floor slabs and the thickness of the reinforcing steel protective layer. Background Technology

[0002] Cast-in-place reinforced concrete slabs refer to floor slabs constructed on-site according to the design location, through formwork erection, rebar tying, concrete pouring, curing, and formwork removal. On construction sites, most structural foundations, slabs, walls, and other load-bearing structures require internal rebar reinforcement. The quality of the structural formation is closely related to factors such as rebar spacing, the thickness of the concrete cover, and the overall concrete thickness. Current techniques for constructing bottom rebar in floor slabs involve placing concrete or plastic spacers to ensure the thickness of the concrete cover, using wire tying to ensure rebar spacing, and manually inserting marked rebar cuttings to determine if the concrete thickness meets requirements.

[0003] The drawbacks of using the above method are as follows: Using spacers, stirrups, and ties to bind the reinforcing bars can easily lead to problems such as spacer breakage or displacement, and ties falling off or breaking due to concrete pouring or people stepping on them. This cannot effectively guarantee the thickness and spacing of the concrete cover for the floor slab reinforcement, failing to meet design requirements, and compromising the load-bearing strength of the floor slab. This seriously affects the construction quality of the building structure and poses certain safety hazards. Furthermore, placing spacers, stirrups, and tying the reinforcing bars is time-consuming and cumbersome, affecting the construction progress.

[0004] Application publication number CN115288367 discloses a positioning structure and construction method for reinforcing bars in concrete floor slabs. The vertical positioning component includes a threaded column, an upper fixing part, and a lower fixing part. The upper fixing part is threaded at the top of the threaded column, and the lower fixing part is threaded at the bottom. The upper fixing part is used to fix the third and fourth layers of reinforcing bars, and the lower fixing part is used to fix the first and second layers of reinforcing bars. An adjusting sleeve is installed between the threaded column and the upper fixing part, and the height of the vertical positioning component is adjusted by increasing or decreasing the number of adjusting sleeves. However, the method of fixing the first, second, third, and fourth layers of reinforcing bars, as well as the third and fourth layers, in the vertical positioning component of this design is to lock the cross-shaped joints formed by the reinforcing bars. The drawback is that in actual construction scenarios, the intersection angle formed by the reinforcing bars is not necessarily 90 degrees, and there is a certain degree of error. This error can easily cause the upper and lower fixing parts to fail to engage and lock the intersections of the reinforcing bars, resulting in poor practicality. Furthermore, since the device is only located at the cross-shaped joints formed by the reinforcing bars, the support effect on the entire reinforcing mesh is poor. During concrete pouring and when people walk on it, the reinforcing mesh is prone to deformation and displacement, affecting the construction effect. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a controller for the thickness of reinforced concrete floor slabs and the thickness of the reinforcing steel protective layer. By setting a lower fixing part, an upper fixing part, and adjusting studs, the height of the upper and lower reinforcing steel layers can be adjusted, and the position of the reinforcing steel layers can be locked, thereby improving the structural stability and deformation resistance of the reinforcing steel layers, improving the forming quality of the concrete floor slab, facilitating installation, reducing manufacturing costs, saving time spent on-site tying of reinforcing steel, improving construction efficiency, shortening the construction period, and reducing labor costs.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A controller for the thickness of reinforced concrete floor slabs and the thickness of reinforcing steel protective layer includes a lower fixing part, an upper fixing part, and an adjusting stud for connecting the lower fixing part and the upper fixing part;

[0008] The lower fixing part includes a lower support plate, a lower threaded cylinder disposed on the lower support plate and used for connection with the adjusting stud, and a support foot disposed at the lower end of the lower support plate;

[0009] The upper fixing part includes an upper support plate and an upper threaded cylinder disposed on the upper support plate for connection with the adjusting stud.

[0010] The lower support plate and the upper support plate are used to support the lower layer of steel mesh and the upper layer of steel mesh, respectively, and the vertical projected area of ​​the lower support plate and the upper support plate is greater than the minimum grid area of ​​the steel mesh.

[0011] As a further preferred embodiment of the present invention, it further includes a control connection assembly disposed on the adjusting stud, the control connection assembly including a lower fastening sleeve disposed on the adjusting stud and a pressure plate disposed outside the lower fastening sleeve; the lower fastening sleeve is located at the upper end of the lower threaded cylinder and the outer diameter of the lower fastening sleeve is larger than the inner diameter of the lower threaded cylinder; the pressure plate is disposed opposite to the lower support plate and the vertical projection area of ​​the pressure plate is larger than the minimum mesh area of ​​the reinforcing mesh.

[0012] As a further preferred embodiment of the present invention, the control connection assembly further includes at least two fixed cylinders disposed on the upper end of the pressure plate, a screw rod disposed on the fixed cylinder and threadedly connected to the fixed cylinder, and a fixing ring disposed on the screw rod.

[0013] As a further preferred embodiment of the present invention, the upper support plate includes a ring, a plurality of connecting rods disposed on the inner ring surface of the ring and used for connection with the upper threaded cylinder, and an arc-shaped tube disposed on the connecting rods, and the distribution positions of all the fixed rings in the vertical projection are located on the movement path of the arc-shaped tube when the ring rotates.

[0014] As a further preferred embodiment of the present invention, the number of the arc-shaped tubes is the same as the number of the fixing rings, all the arc-shaped tubes are equidistant from the center of the upper threaded cylinder, and the distance between any two adjacent arc-shaped tubes is equal.

[0015] As a further preferred embodiment of the present invention, the inner diameter of the fixing ring is larger than the outer diameter of the arc-shaped tube, and the distance between any two adjacent fixing rings is equal.

[0016] As a further preferred embodiment of the present invention, the control connection assembly further includes a threaded hole disposed at the upper end of the fixed ring, an adjusting screw threadedly connected to the threaded hole, and a nut disposed on the adjusting screw, wherein the lower end of the adjusting screw passes through the threaded hole and acts on the upper surface of the arc-shaped tube located within the fixed ring.

[0017] As a further preferred embodiment of the present invention, the control connection assembly further includes a limiting nut disposed on the adjusting stud and located at the lower end of the nut.

[0018] As a further preferred embodiment of the invention, the control connection assembly further includes an identification layer disposed on the nut.

[0019] In summary, the present invention has the following beneficial effects:

[0020] This invention enables the height adjustment of the upper and lower steel reinforcement layers to adjust the thickness of the entire concrete layer as needed. It also utilizes control connection components to accurately limit the vertical height and horizontal position of the upper and lower steel reinforcement layers, improving the forming quality of the concrete slab. Furthermore, it is easy to install, has low manufacturing costs, saves the time of on-site steel reinforcement tying, improves construction efficiency, shortens the construction period, and reduces labor costs. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the installation structure of the present invention.

[0022] Appendix Figure 2 This is a schematic diagram of the structure of the present invention.

[0023] Appendix Figure 3 This is a schematic diagram of the structure of the lower fixing part of the present invention.

[0024] Appendix Figure 4 This is a schematic diagram of the structure of the control connection component of the present invention.

[0025] Appendix Figure 5 This is a schematic diagram of the structure of the upper support plate of the present invention.

[0026] Appendix Figure 6 This is a partial schematic diagram of the control connection component of the present invention.

[0027] Figure descriptions: First layer of reinforcing bars a1, second layer of reinforcing bars a2, third layer of reinforcing bars b1, fourth layer of reinforcing bars b2, concrete c, lower fixing part 1, lower support plate 101, lower threaded cylinder 102, support foot 103, upper fixing part 2, upper support plate 201, ring 201a, connecting rod 201b, arc-shaped tube 201c, upper threaded cylinder 202, adjusting stud 3, control connection assembly 4, lower fastening screw sleeve 401, pressure plate 402, fixing cylinder 403, screw 404, fixing ring 405, threaded hole 406, adjusting screw 407, nut 408, limit nut 409, marking layer 410. Detailed Implementation

[0028] This invention provides a controller for the thickness of reinforced concrete floor slabs and the thickness of the reinforcing steel protective layer, as shown in the attached figure. Figure 1 As shown, it includes a first layer of reinforcing bars a1, a second layer of reinforcing bars a2, a third layer of reinforcing bars b1 and a fourth layer of reinforcing bars b2. The first layer of reinforcing bars a1 and the second layer of reinforcing bars a2 are arranged perpendicularly and alternately to form a bottom reinforcing mesh; the third layer of reinforcing bars b1 and the fourth layer of reinforcing bars b2 are arranged perpendicularly and alternately to form a top reinforcing mesh.

[0029] In this embodiment, as shown in the appendix Figure 2 - Appendix Figure 3 As shown, this device includes a lower fixing part 1, an upper fixing part 2, and an adjusting stud 3 for connecting the lower fixing part 1 and the upper fixing part 2. The lower fixing part 1 includes a lower support plate 101, a lower threaded cylinder 102 disposed on the lower support plate 101 and used for connecting with the adjusting stud 3, and a support foot 103 disposed at the lower end of the lower support plate 101. The upper fixing part 2 includes an upper support plate 201 and an upper threaded cylinder 202 disposed on the upper support plate 201 for connecting with the adjusting stud 3. The lower support plate 101 and the upper support plate 201 are used to support the lower and upper reinforcing meshes, respectively, and the vertical projected area of ​​both the lower support plate 101 and the upper support plate 201 is greater than the minimum mesh area of ​​the reinforcing mesh.

[0030] In this embodiment, the lower support plate 101 is a disc with a diameter of at least 150mm to increase the support area for the steel mesh and control the overall deformation and stability of the steel bars. The support foot 103 is used to control the thickness of the lower steel bar protective layer, that is, the support foot 103 can have the function of adjusting the height to control the thickness of the lower steel bar protective layer.

[0031] During construction, the reinforcing bars are divided into four layers, arranged from bottom to top. The first layer of reinforcing bars a1 and the second layer of reinforcing bars a2 at the bottom are connected at the set interval and then installed on the lower support plate 101. Then, the adjusting stud 3 is installed on the lower threaded cylinder 102. After the upper support plate 201 is fixedly installed on the adjusting stud 3 at the set height through the upper threaded cylinder 202, the third layer of reinforcing bars b1 and the fourth layer of reinforcing bars b2 at the top are connected at the set interval and then installed on the upper support plate 201.

[0032] In another embodiment of the invention, as shown in the appendix Figure 2 and attached Figure 4 As shown, the device also includes a control connection assembly 4 disposed on the adjusting stud 3. The control connection assembly 4 includes a lower fastening sleeve 401 disposed on the adjusting stud 3, a pressure plate 402 disposed outside the lower fastening sleeve 401, at least two fixed cylinders 403 disposed on the upper end of the pressure plate 402, a screw 404 disposed on the fixed cylinder 403 and threadedly connected to the fixed cylinder 403, and a retaining ring 405 disposed on the screw 404.

[0033] Wherein, the lower fastening screw sleeve 401 is located at the upper end of the lower threaded cylinder 102 and the outer diameter of the lower fastening screw sleeve 401 is larger than the inner diameter of the lower threaded cylinder 102; the pressure plate 402 is arranged opposite to the lower support plate 101 and the vertical projection area of ​​the pressure plate 402 is smaller than the vertical projection area of ​​the lower support plate 101 but larger than the minimum mesh area of ​​the steel mesh.

[0034] The main function of the lower fastening sleeve 401 is to limit the installation position and strength of the lower support plate 101 on the adjusting stud 3. By rotating the lower fastening sleeve 401 on the adjusting stud 3 until its lower part abuts against the upper end of the lower threaded cylinder 102, the connection between the lower threaded cylinder 102 and the adjusting stud 3 is prevented from shaking, thereby achieving the purpose of locking the position and height of the lower support plate 101. The pressure plate 402 is a circular plate, which is set at the upper end of the bottom reinforcing mesh composed of the first layer of reinforcing bars a1 and the second layer of reinforcing bars a2. It is used to clamp the bottom reinforcing mesh together with the lower support plate 101, thereby strengthening the limiting and fixing of the bottom reinforcing mesh. The position of the pressure plate 402 is fixed by the lower fastening sleeve 4, making the installation simple and quick.

[0035] Furthermore, as shown in the appendix Figure 5 As shown, the upper support plate 201 includes a circular ring 201a, a plurality of connecting rods 201b disposed on the inner ring surface of the circular ring 201a and used to connect with the upper threaded cylinder 202, and an arc-shaped tube 201c disposed on the connecting rods 201b. The distribution positions of all the fixed rings 405 in the vertical projection are all located on the movement path of the arc-shaped tube 201c when the circular ring 201a rotates.

[0036] The number of arc-shaped tubes 201c is the same as the number of fixing rings 405. All arc-shaped tubes 201c are equidistant from the center of the upper threaded cylinder 202, and the distance between any two adjacent arc-shaped tubes 201c is equal. The inner diameter of the fixing ring 405 is larger than the outer diameter of the arc-shaped tubes 201c, and the distance between any two adjacent fixing rings 405 is equal.

[0037] The number of connecting rods 201b is two or more, and they equally divide the ring 201a. The upper threaded cylinder 202 is located at the connection center of all connecting rods 201b. The purpose is to ensure that the arc-shaped tubes 201c are equidistantly distributed inside the ring 201a, and that all the arc-shaped tubes 201c form the same circle, so as to ensure that the movement paths of the arc-shaped tubes 201c are the same.

[0038] During construction, before installing the support plate 201, all fixing rings 405 are first installed and adjusted to the same horizontal height. The openings of all fixing rings 405 must face in the same or nearly the same direction as the tangent at their corresponding circular rings 201a. This is to ensure that the curved tube 201c can pass through the fixing rings 405 during rotation, thus locking and supporting the upper support plate 201. It is worth noting that since the rotation of the curved tube 201c is achieved by the rotation of the circular rings 201a on the adjusting stud 3, which also includes vertical displacement, the inner diameter of the fixing rings 405 is larger than the outer diameter of the curved tube 201c to ensure the smooth operation of the curved tube 201c.

[0039] In another embodiment of the invention, as shown in the appendix Figure 6 As shown, the control connection assembly 4 further includes a threaded hole 406 at the upper end of the fixing ring 405, an adjusting screw 407 threadedly connected to the threaded hole 406, a nut 408 on the adjusting screw 407, a limiting nut 409 on the adjusting screw 407 and located at the lower end of the nut 408, and an identification layer 410 on the nut 408. The lower end of the adjusting screw 407 passes through the threaded hole 406 and acts on the upper surface of the arc-shaped tube 201c located in the fixing ring 405.

[0040] The adjusting screw 407 serves to prevent the arc-shaped tube 201c from retracting after being screwed into the fixing ring 405, by clamping the upper surface of the arc-shaped tube 201c downwards. The nut 408 adjusts the height of the upper steel reinforcement protective layer. Furthermore, because the number of adjusting screws 407 is increased compared to the traditional method, it further ensures that the surface height of the formed concrete c remains consistent, accurately achieving the designed thickness of the upper steel reinforcement protective layer.

[0041] The method of using this invention is as follows:

[0042] After the steel bars of each layer are cut to the required length, they are installed at the designed intervals to form the lower and upper steel bar layers. The assembled steel bars are then stacked and transported to the construction site.

[0043] Place the lower fixing part at the bottom layer, place the lower steel reinforcement layer on the lower fixing part, then install the lower fastening screw sleeve 401 on the adjusting screw 3 and rotate it until it abuts against the upper end of the lower threaded cylinder 102. At the same time, the pressure plate 402 presses down on the steel reinforcement layer to lock and fix it.

[0044] Further install screw 404, adjust the height and orientation of fixing ring 405, then put upper threaded cylinder 202 on fixing stud 3, hold ring 201a and rotate downward until arc tube 201c enters fixing ring 405 to complete fixing and locking ring 201a, install adjusting screw 407 to press arc tube 201c to prevent backflow;

[0045] Place the upper steel reinforcement layer on the ring 201a, then fix it with the limiting nut 409 and limit the height of the nut 408 to complete the elevation;

[0046] Finally, concrete is poured according to the marked height of the marking layer 410. After the pouring is completed, the concrete surface is finished, and the construction is completed.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A controller for the thickness of reinforced concrete floor slabs and the thickness of the reinforcing steel protective layer, characterized in that, It includes a lower fixing part (1), an upper fixing part (2), and an adjusting stud (3) for connecting the lower fixing part (1) and the upper fixing part (2); The lower fixing part (1) includes a lower support plate (101), a lower threaded cylinder (102) disposed on the lower support plate (101) and used for connection with the adjusting stud (3), and a support foot (103) disposed at the lower end of the lower support plate (101). The upper fixing part (2) includes an upper support plate (201) and an upper threaded cylinder (202) disposed on the upper support plate (201) for connection with the adjusting stud (3). The lower support plate (101) and the upper support plate (201) are used to support the lower layer of steel mesh and the upper layer of steel mesh, respectively, and the vertical projected area of ​​the lower support plate (101) and the upper support plate (201) is greater than the minimum grid area of ​​the steel mesh. It also includes a control connection assembly (4) disposed on the adjusting stud (3), the control connection assembly (4) including a lower fastening sleeve (401) disposed on the adjusting stud (3) and a pressure plate (402) disposed outside the lower fastening sleeve (401); the lower fastening sleeve (401) is located at the upper end of the lower threaded cylinder (102) and the outer diameter of the lower fastening sleeve (401) is larger than the inner diameter of the lower threaded cylinder (102); the pressure plate (402) is disposed opposite to the lower support plate (101) and the vertical projection area of ​​the pressure plate (402) is larger than the minimum grid area of ​​the steel mesh; The control connection assembly (4) further includes at least two fixed cylinders (403) disposed on the upper end of the pressure plate (402), a screw (404) disposed on the fixed cylinder (403) and threadedly connected to the fixed cylinder (403), and a retaining ring (405) disposed on the screw (404). The upper support plate (201) includes a ring (201a), a plurality of connecting rods (201b) disposed on the inner ring surface of the ring (201a) and used for connection with the upper threaded cylinder (202), and an arc-shaped tube (201c) disposed on the connecting rods (201b). The distribution positions of all the fixed rings (405) on the vertical projection are all located on the movement path of the arc-shaped tube (201c) when the ring (201a) rotates.

2. The controller for the thickness of reinforced concrete floor slabs and the thickness of the reinforcing steel protective layer according to claim 1, characterized in that, The number of the arc-shaped tubes (201c) is the same as the number of the fixed rings (405). All the arc-shaped tubes (201c) are equidistant from the center of the upper threaded cylinder (202), and the distance between any two adjacent arc-shaped tubes (201c) is equal.

3. A controller for the thickness of reinforced concrete floor slabs and the thickness of reinforcing steel protective layer according to claim 1, characterized in that, The inner diameter of the fixing ring (405) is larger than the outer diameter of the arc-shaped tube (201c), and the distance between any two adjacent fixing rings (405) is equal.

4. A controller for the thickness of reinforced concrete floor slabs and the thickness of reinforcing steel protective layer according to claim 1, characterized in that, The control connection assembly (4) further includes a threaded hole (406) disposed at the upper end of the fixed ring (405), an adjusting screw (407) threadedly connected to the threaded hole (406), and a nut (408) disposed on the adjusting screw (407). The lower end of the adjusting screw (407) passes through the threaded hole (406) and acts on the upper surface of the arc-shaped tube (201c) located in the fixed ring (405).

5. A controller for the thickness of reinforced concrete floor slabs and the thickness of reinforcing steel protective layer according to claim 4, characterized in that, The control connection assembly (4) further includes a limiting nut (409) disposed on the adjusting screw (407) and located at the lower end of the nut (408).

6. A controller for the thickness of reinforced concrete floor slabs and the thickness of reinforcing steel protective layer according to claim 4, characterized in that, The control connection assembly (4) also includes an identification layer (410) disposed on the nut (408).

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