A device for positioning and controlling the thickness of the reinforcement layer of the inner lining wall

By designing a clamp structure composed of steel plates and back plates, the problems of inaccurate positioning of inner lining wall reinforcement and uneven protective layer thickness were solved, achieving precise control and efficient construction. It is suitable for reinforcement installation in complex parts, improving construction quality and efficiency.

CN224495600UActive Publication Date: 2026-07-14CCCC TUNNEL ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CCCC TUNNEL ENG CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In traditional interior wall reinforcement construction, inaccurate positioning and uneven reinforcement cover thickness affect structural quality and load-bearing capacity. Existing simple support methods are cumbersome to install and have low reuse rates, making it difficult to meet high-quality construction requirements, especially in complex areas such as the base slab and side walls where precise positioning is difficult.

Method used

Design a clamping structure comprising a pair of parallel steel plates and a back plate. The steel plates have grooves for clamping reinforcing bars. A square tube clamp is formed by a side positioning plate and a slot structure. Combined with bolt fixing, it can achieve precise control of the spacing between reinforcing bars and the thickness of the protective layer.

Benefits of technology

It improves the positioning accuracy and construction quality of rebar installation, ensures that the thickness of the rebar protective layer meets the design requirements, simplifies operation, increases the reuse rate, is applicable to the positioning needs of different construction parts, and improves construction efficiency and project quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lining wall steel bar positioning and steel bar protective layer thickness control device relates to building construction technical field, this lining wall steel bar positioning and steel bar protective layer thickness control device, including a pair of mutually parallelly arranged steel sheet, steel sheet installs on backplate, and the both sides of backplate are equipped with side part positioning board respectively, and two groups of side part positioning boards are used for fixing and connecting a pair of steel sheet on backplate, and a plurality of recesses for clamping steel bars are seted up to the length direction of one side of steel sheet. The utility model discloses a pair of steel sheet is stably fixed through setting side part positioning board on the both sides of backplate and cooperating with the structure of inserting slot, forms the fixture structure with square pipe shape, and the overall structure is compact, and the assembly is convenient, and a plurality of recesses for clamping steel bars are seted up to steel sheet, realizes the accurate control to the steel bar spacing, linear and steel bar protective layer thickness, thereby promotes the positioning precision and construction quality of steel bar installation, and ensures that steel bar protective layer thickness meets the design requirement.
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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a device for positioning the reinforcing bars of an inner lining wall and controlling the thickness of the reinforcing bar protective layer. Background Technology

[0002] During the construction of the inner lining wall reinforcement, the positioning accuracy of the reinforcement and the control of the reinforcement protective layer thickness are key factors affecting the overall structural quality. Traditional reinforcement binding and positioning methods rely heavily on manual operation, which has problems such as inaccurate positioning, uneven reinforcement spacing, and non-straight lines. This can easily lead to the reinforcement protective layer thickness not meeting the design requirements, affecting the durability and load-bearing capacity of the concrete structure.

[0003] Currently, some construction sites use simple supports or temporary blocks for rebar positioning and protective layer control. However, these methods generally have drawbacks such as cumbersome installation, low reusability, and poor positioning accuracy, making it difficult to meet the requirements of high-quality construction. This is especially true in complex areas such as the base slab and side walls, where the rebar is densely arranged and the working space is limited, further increasing the difficulty of accurate positioning.

[0004] Therefore, there is an urgent need for a device that is structurally sound, easy to operate, and accurately positioned for positioning the reinforcing bars in the inner lining wall and controlling the thickness of the reinforcing bar protective layer, in order to solve the above-mentioned problems in the existing technology, improve construction efficiency and project quality, achieve the goal of first-time acceptance rate of reinforcing bar installation, and has good prospects for engineering application. Utility Model Content

[0005] This utility model provides a device for positioning and controlling the thickness of the reinforcing bar protective layer of an inner lining wall, comprising a pair of parallel steel plates, the steel plates being mounted on a back plate, and side positioning plates being provided on both sides of the back plate. The two sets of side positioning plates are used to fix the pair of steel plates to the back plate. Multiple grooves for clamping the reinforcing bars are provided on one side of the steel plates along the length direction. The pair of steel plates, the back plate, and the two sets of side positioning plates are assembled together to form a clamping structure with a square tube shape.

[0006] Preferably, the steel plate is made of 2mm thick steel plate, and the length of a single piece of steel plate is 2m.

[0007] Preferably, the groove is a semi-circular structure, and the groove spacing is the same as the rebar spacing.

[0008] Preferably, the height of the back plate is 30mm.

[0009] Preferably, the back plate has slots near the top and bottom sides, and a pair of steel plates are respectively inserted into the two sets of slots and extend out of the slots.

[0010] Preferably, the inner wall of the slot is provided with an elastic gasket, and the steel plate is in close contact with the elastic gasket after being inserted into the slot.

[0011] Preferably, the side positioning plate has a positioning groove on the upper and lower sides, and the sides of a pair of steel plates are respectively inserted into the two sets of positioning grooves.

[0012] Preferably, a second positioning groove is provided on the other side of the side positioning plate, and the first positioning groove is connected to the second positioning groove, with the side of the back plate inserted into the second positioning groove.

[0013] Preferably, a bolt is rotatably provided on one side of the side positioning plate, and the threaded part of the bolt is inserted into a threaded sleeve provided on the outer side of the back plate, and the bolt and the threaded sleeve are threadedly connected.

[0014] Preferably, the bolt head is provided with anti-slip texture to increase the friction for manual gripping.

[0015] This utility model provides a device for positioning reinforcing bars in an inner lining wall and controlling the thickness of the reinforcing bar protective layer, which, compared with the prior art:

[0016] 1. This utility model sets side positioning plates on both sides of the back plate and uses a slot structure to stably fix a pair of steel plates, forming a clamp structure with a square tube shape. The overall structure is compact and easy to assemble. Multiple grooves are opened on the steel plates for clamping the reinforcing bars, so as to achieve precise control of the spacing, line type and thickness of the reinforcing bar protective layer, thereby improving the positioning accuracy and construction quality of the reinforcing bar installation and ensuring that the thickness of the reinforcing bar protective layer meets the design requirements.

[0017] 2. This utility model features a pair of detachable steel plates, which can be used individually as steel plate clamps. These plates are suitable for positioning operations during the installation of bottom slab and side wall reinforcement. During installation, a steel plate clamp is placed every two meters along the length of the reinforcement, effectively controlling the spacing and alignment of the main and distribution reinforcement bars. This significantly improves the positioning accuracy and appearance quality of the reinforcement installation. Furthermore, the steel plates, back plate, and side positioning plates can be combined to form an integrated square tube clamp structure, further expanding its application scenarios and meeting the positioning and protective layer thickness control requirements of different construction sites. The entire device is easy to assemble and disassemble, has a high reusability rate, and is simple to operate, making it highly valuable for widespread application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0020] Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the square tube clamp positioning steel bar according to an embodiment of the present utility model;

[0022] Figure 4 This is a top view of the square tube clamp positioning steel bar according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram showing the disassembled structure of the square tube clamp according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the side positioning plate structure according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the steel plate structure according to an embodiment of the present utility model;

[0026] Figure 8 This is a top view schematic diagram of the steel plate positioning reinforcement in an embodiment of this utility model.

[0027] Figure label:

[0028] 1. Steel plate; 2. Groove; 3. Back plate; 31. Slot; 32. Threaded sleeve; 33. Elastic gasket; 4. Side positioning plate; 41. Positioning groove one; 42. Positioning groove two; 43. Bolt; 44. Anti-slip texture. Detailed Implementation

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Example 1

[0031] Please refer to Figures 1-6 This utility model provides a device for positioning the reinforcing bars of an inner lining wall and controlling the thickness of the reinforcing bar protective layer, including a pair of parallel steel plates 1, which are installed on a back plate 3 by plugging.

[0032] Specifically, slots 31 are provided near the upper and lower sides of the back plate 3. A pair of steel plates 1 are inserted into the upper and lower sets of slots 31 respectively, and partially extend out of the outside of the slots 31 to form a groove 2 structure for positioning the reinforcing bars. An elastic gasket 33 is provided on the inner wall of the slot 31. When the steel plate 1 is inserted into the slot 31, it comes into close contact with the elastic gasket 33, thereby enhancing the connection stability and preventing loosening.

[0033] Side positioning plates 4 are provided on both sides of the back plate 3 to stably fix a pair of steel plates 1 onto the back plate 3. Positioning grooves 41 are provided near the upper and lower ends of the side positioning plates 4. The sides of the steel plates 1 are inserted into the positioning grooves 41 to achieve lateral positioning.

[0034] Meanwhile, a second positioning groove 42 is provided on the other side of the side positioning plate 4. The first positioning groove 41 is connected to the second positioning groove 42. The edge of the back plate 3 is inserted into the second positioning groove 42 to complete the nested assembly of the overall clamp structure.

[0035] To further enhance the connection strength between the components, a bolt 43 is rotatably provided on one side of the side positioning plate 4. The threaded end of the bolt 43 is inserted into the threaded sleeve 32 provided on the outside of the back plate 3 and forms a threaded connection with it to achieve detachable fastening.

[0036] The head of bolt 43 is provided with anti-slip texture 44, which makes it easy for operators to manually adjust and improves the ease of operation when tightening or disassembling.

[0037] Preferably, the height of the back plate 3 is 30mm, and a plurality of grooves 2 for holding the reinforcing bars are spaced apart along the length of one side of the steel plate 1. The grooves 2 are semi-circular structures, and the spacing between the grooves 2 is consistent with the design spacing of the reinforcing bars, so as to ensure that the reinforcing bars are arranged evenly and have neat lines.

[0038] A pair of steel plates 1, a back plate 3, and two sets of side positioning plates 4 are assembled together to form a clamp structure with a square tube shape. The width of the square tube clamp is equal to the diameter of the reinforcing bar plus the designed thickness of the reinforcing bar protective layer. When the clamp is clamped on the reinforcing bar, the distance from the side of the reinforcing bar near the inner wall of the groove 2 to the outer edge of the steel plate 1 is the actual thickness of the reinforcing bar protective layer.

[0039] Square tube clamps are suitable for synchronous positioning operations during the installation of main reinforcement bars in side walls. During installation, they are continuously set between the side wall formwork and the main reinforcement bars along the length of the side wall. After the clamps are installed, the positions of the reinforcement bars and formwork are checked. After confirming that there are no errors, concrete is poured. The concrete pouring height should reach the bottom of the square tube clamps to ensure that the thickness of the reinforcement protective layer is accurate and controllable.

[0040] Example 2

[0041] like Figure 7 and Figure 8 As shown, in another embodiment of this utility model, the steel plate 1 can be detached from the back plate 3 and used separately as a steel plate clamp.

[0042] The steel plate clamps are made of 2mm thick steel plates, with a single plate length of 2m. During installation, they can be installed simultaneously during the bottom plate and side wall reinforcement binding stage. A steel plate clamp is arranged every 2 meters along the length of the reinforcement to help control the spacing and alignment of the main reinforcement and distribution reinforcement, thereby improving the positioning accuracy and appearance quality of the reinforcement installation.

[0043] Because steel plate clamps are simple in structure, lightweight, and easy to assemble and disassemble, they can not only meet the positioning needs of different construction stages, but also be reused, significantly improving construction efficiency and economy.

[0044] In summary, the device for positioning and controlling the thickness of the reinforcing steel bar in the inner lining wall provided by this utility model can be combined into a square tube clamp for precise positioning in complex parts, or it can be disassembled into an independent steel plate clamp for controlling the arrangement of foundation reinforcing steel bars. It has strong applicability, is easy to operate, and has a high reusability rate, and has good prospects for engineering applications.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for positioning reinforcing bars and controlling the thickness of the protective layer of reinforcing bars in an inner lining wall, characterized in that: It includes a pair of parallel steel plates (1), which are mounted on a back plate (3). The back plate (3) has side positioning plates (4) on both sides. The two sets of side positioning plates (4) are used to fix the pair of steel plates (1) to the back plate (3). A plurality of grooves (2) for clamping reinforcing bars are opened on one side of the steel plate (1) along the length direction. The pair of steel plates (1), the back plate (3) and the two sets of side positioning plates (4) are assembled together to form a clamping structure with a square tube shape.

2. The device for positioning and controlling the thickness of the reinforcing steel reinforcement in the inner lining wall according to claim 1, characterized in that: The steel plate (1) is made of 2mm thick steel plate and the length of a single piece of steel plate (1) is 2m.

3. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 2, characterized in that: The groove (2) is a semi-circular structure, and the spacing between the grooves (2) is the same as the spacing between the reinforcing bars.

4. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 3, characterized in that: The height of the back plate (3) is 30mm.

5. The device for positioning and controlling the thickness of the reinforcing steel reinforcement in the inner lining wall according to claim 1, characterized in that: The back plate (3) has slots (31) near the upper and lower sides. A pair of steel plates (1) are inserted into the two sets of slots (31) and extend out of the slots (31).

6. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 5, characterized in that: The inner wall of the slot (31) is provided with an elastic gasket (33), and the steel plate (1) is in close contact with the elastic gasket (33) after being inserted into the slot (31).

7. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 6, characterized in that: The side positioning plate (4) has positioning grooves (41) on both the upper and lower sides, and the sides of a pair of steel plates (1) are respectively inserted into the two sets of positioning grooves (41).

8. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 7, characterized in that: The other side of the side positioning plate (4) is provided with a positioning groove two (42), and the positioning groove one (41) is connected to the positioning groove two (42). The side of the back plate (3) is inserted into the positioning groove two (42).

9. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 8, characterized in that: A bolt (43) is rotatably provided on one side of the side positioning plate (4). The threaded part of the bolt (43) is inserted into the threaded sleeve (32) provided on the outside of the back plate (3). The bolt (43) and the threaded sleeve (32) are threadedly connected.

10. The device for positioning the reinforcing bars of the inner lining wall and controlling the thickness of the reinforcing bar protective layer according to claim 9, characterized in that: The head of the bolt (43) is provided with anti-slip texture (44) to improve the friction of manual grip.