Adjustable steel bar protection layer thickness control device

By designing an adjustable steel reinforcement protective layer thickness control device, and utilizing positioning and height adjustment components, the limitations of thickness control in traditional pad block construction are solved, enabling flexible adjustment of the reinforced concrete protective layer thickness and simplifying construction.

CN224200152UActive Publication Date: 2026-05-05CHINA CONSTR SECOND ENG BUREAU LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR SECOND ENG BUREAU LTD
Filing Date
2025-05-30
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional block construction has limitations in controlling the thickness of the concrete protective layer, failing to meet the thickness requirements of different locations, and requiring a large number and specifications, especially in special locations where it cannot be used.

Method used

An adjustable rebar cover thickness control device was designed, comprising a positioning component and a height adjustment component. Through the combination of the positioning plate, mounting rod, adjustment plate and height adjustment component, precise control of the rebar cover thickness is achieved.

Benefits of technology

It enables flexible adjustment of the thickness of the reinforced concrete protective layer, adapting to different rebar spacings and construction needs, simplifying the construction process, and reducing the specifications and quantity of spacers required for construction.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224200152U_ABST
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Abstract

The utility model discloses an adjustable reinforcing steel bar protective layer thickness control device, which comprises a positioning assembly, an adjusting plate and a height adjusting assembly, the positioning assembly comprises a positioning plate and a mounting rod, the positioning plate is horizontally arranged, the mounting rod is vertically arranged on the bottom surface of the positioning plate, the adjusting plate is arranged on the mounting rod, and the height adjusting assembly is arranged on the adjusting plate. The height adjusting assembly is arranged between the adjusting plate and the positioning plate and used for limiting the distance between the adjusting plate and the positioning plate. The adjusting plate comprises a bottom plate and a side wing, the bottom plate is arranged on the mounting rod and is parallel to the positioning plate, the side wing is vertically arranged on the edge of the bottom plate, and a limiting groove is formed in the side wing. The distance between the adjusting structure and the base is adjusted and controlled, so that the thickness of the raft reinforcing steel bar protection layer is controlled.
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Description

Technical Field

[0001] This utility model belongs to the field of construction technology of building formwork system, specifically relating to an adjustable steel reinforcement protective layer thickness control device. Background Technology

[0002] The most common method for controlling the concrete cover in formwork system construction is to insert concrete spacers between the reinforcing bars and the formwork on the bottom and sides of the structure. These spacers separate the reinforcing bars from the formwork, thus controlling the thickness of the concrete cover. However, some problems arise during construction. For example, the thickness of the concrete cover varies in different locations. Traditional spacer construction requires a large number and specifications of spacers, necessitating customization. Furthermore, precast concrete spacers cannot be used in certain locations, thus presenting certain limitations. Summary of the Invention

[0003] The purpose of this utility model is to provide an adjustable steel reinforcement protective layer thickness control device, which is equipped with a positioning component and a height adjustment component to control the thickness of the steel reinforcement protective layer in raft foundations.

[0004] To achieve the above objectives, this utility model is implemented through the following solution:

[0005] An adjustable rebar protective layer thickness control device includes a positioning component, an adjusting plate, and a height adjusting component. The positioning component includes a positioning plate and an installation rod. The installation rod is vertically disposed on the bottom surface of the positioning plate. The adjusting plate is disposed on the installation rod. The height adjusting component is disposed between the adjusting plate and the positioning plate to limit the distance between the adjusting plate and the positioning plate.

[0006] The adjusting plate includes a base plate and side wings. The base plate is mounted on the mounting rod and is parallel to the positioning plate. The side wings are vertically mounted on the edge of the base plate and are provided with limiting grooves.

[0007] Furthermore, the height adjustment component consists of a nut and a washer, both of which are mounted on the mounting rod. Multiple nuts and washers are provided to control the thickness of the reinforcing bar protective layer.

[0008] Furthermore, the total height of the height adjustment components shall not be less than the required thickness of the steel reinforcement protective layer, and shall not exceed the thickness of the steel reinforcement protective layer by 2cm.

[0009] Furthermore, the positioning plate is provided with an adjusting rod, which is vertically inserted through the positioning plate. The adjusting rods are arranged in pairs, and the pairs of adjusting rods are symmetrically arranged with the mounting rod as the center.

[0010] Furthermore, the position of the limiting groove is set according to the spacing of the reinforcing bars.

[0011] Furthermore, the center of the positioning plate is aligned with the center of the mounting rod.

[0012] Furthermore, a fixing ring is provided below the base plate, and the mounting rod is sleeved inside the fixing ring, with the fixing ring matching the mounting rod.

[0013] Furthermore, the diameter of the hole at the junction of the base plate and the mounting rod is 5mm larger than the diameter of the mounting rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention controls the thickness of the concrete cover by setting up positioning and height adjustment components, which can meet the needs of different concrete cover thicknesses; the limiting groove on the side wing of the adjustment plate is slotted according to the actual distribution spacing of the reinforcing bars at the construction site, which can cope with construction with different reinforcing bar spacings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of an adjustable steel reinforcement protective layer thickness control device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the positioning component of an adjustable rebar protective layer thickness control device according to this utility model;

[0019] Figure 3 This is a schematic diagram of the adjustment plate of an adjustable rebar protective layer thickness control device according to this utility model;

[0020] Figure 4 This is a schematic diagram of the height adjustment component of an adjustable rebar protective layer thickness control device according to this utility model;

[0021] Figure 5 This is a schematic diagram of the adjusting rod of an adjustable steel reinforcement protective layer thickness control device according to this utility model.

[0022] Reference numerals: 1. Positioning component; 101. Positioning plate; 102. Mounting rod; 103. Adjusting rod; 2. Adjusting plate; 201. Base plate; 202. Side wing; 203. Limiting groove; 3. Height adjustment component; 301. Nut; 302. Washer; 4. Retaining ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1-4 This utility model provides an adjustable rebar protective layer thickness control device, including a positioning component 1, an adjusting plate 2, and a height adjusting component 3. The positioning component 1 includes a positioning plate 101 and an installation rod 102. The installation rod 102 is vertically arranged on the bottom surface of the positioning plate 101, and the center of the positioning plate 101 is aligned with the center of the installation rod 102. The positioning plate 101 is made of thin steel plate, and the installation rod 102 is bolted. The adjusting plate 2 is arranged on the installation rod 102 and includes a base plate 201 and side wings 202. Both the base plate 201 and the side wings 202 are made of thin steel plate. A hole is opened in the base plate 201, and the installation rod 102 is arranged on the base plate 201 through the hole. The base plate 201 is parallel to the positioning plate 101. The diameter of the hole in the base plate 201 is 5mm larger than the diameter of the installation rod 102. A fixing ring 4 is fixedly arranged below the base plate 201, and the installation rod 102 is sleeved on the positioning plate 101. Inside the fixing ring 4, the inner diameter of the fixing ring 4 matches the diameter of the mounting rod 102. The fixing ring 4 is used to fix the mounting rod 102, ensuring that the mounting rod 102 is set perpendicularly to the base plate 201. The side wing 202 is set perpendicularly to the edge of the base plate 201. The side wing 202 is provided with a limiting groove 203. The position of the limiting groove 203 is set according to the spacing of the reinforcing bars. The height adjustment component 3 is set between the adjusting plate 2 and the positioning plate 101 to limit the spacing between the adjusting plate 2 and the positioning plate 101. The height adjustment component 3 consists of a nut 301 and a washer 302. Both the nut 301 and the washer 302 are set on the mounting rod 102. Multiple nuts 301 and washers 302 are provided. The thickness of the reinforcing bar protective layer is controlled by installing different numbers of nuts 301 and washers 302. The total height of the height adjustment component 3 is not less than the required thickness of the reinforcing bar protective layer and not more than 2 cm higher than the thickness of the reinforcing bar protective layer.

[0027] like Figure 5 In order to better adjust the thickness of the concrete cover of the reinforcing bars, an adjusting rod 103 is provided on the positioning plate 101. The adjusting rod 103 is vertically inserted on the positioning plate 101. The adjusting rods 103 are arranged in groups, and the group of adjusting rods 103 are symmetrically arranged with the mounting rod 102 as the center.

[0028] The method of using this utility model is as follows:

[0029] Study the drawings to determine the thickness of the protective layer and the arrangement of the reinforcing bars for each cast-in-place component, and calculate the required quantity and size of each component;

[0030] Cut thin steel plates according to dimensions to make positioning plate 101, and weld positioning plate 101 and mounting rod 102 to form positioning assembly 1, ensuring that the center of positioning plate 101 and mounting rod 102 are aligned and perpendicular to each other.

[0031] Tighten several nuts 301 and washers 302 on the mounting rod 102. The specifications of the nuts 301 and washers 302 should be the same as those of the mounting rod 102 to ensure that the total height of the height adjustment components 3 is close to but not less than the required thickness of the steel reinforcement protective layer of 2cm.

[0032] According to the dimensions, the thin steel plate is processed into the shape of the adjustment plate 2. The limiting groove 203 is cut according to the actual steel bar spacing. A hole is opened in the middle of the bottom plate 201. The hole diameter should be 5mm larger than the diameter of the installation rod 102.

[0033] Install the positioning component 1 and the height adjustment component 3 onto the adjustment plate 2;

[0034] Install the adjustment plate 2 onto the reinforcing bar, ensuring that the bottom plate 201 is tightly attached to the reinforcing bar below, and that the adjustment plate 2 is placed stably without any shaking, warping, or tilting.

[0035] Install a fixing ring 4 below the hole in the base plate 201. The mounting rod 102 is fitted onto the fixing ring 4. The fixing ring 4 has the same specifications as the mounting rod 102. After fixing the mounting rod 102, observe whether the positioning plate 101 is horizontal. Measure the distance from the outer skin of the reinforcing bar to the upper surface of the positioning plate 101 to ensure that it is close to but not less than the specified thickness of the reinforcing bar protective layer for this component. If it exceeds 2mm or is less than the specified thickness, adjust the number of nuts 301 and washers 302 in the height adjustment component 3 in time.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An adjustable rebar protective layer thickness control device, characterized in that: The device includes a positioning component (1), an adjusting plate (2), and a height adjustment component (3). The positioning component (1) includes a positioning plate (101) and a mounting rod (102). The positioning plate (101) is horizontally positioned, and the mounting rod (102) is vertically positioned on the bottom surface of the positioning plate (101). The adjusting plate (2) is positioned on the mounting rod (102), and the height adjustment component (3) is positioned between the adjusting plate (2) and the positioning plate (101) to limit the distance between the adjusting plate (2) and the positioning plate (101). The adjustment plate (2) includes a base plate (201) and a side wing (202). The base plate (201) is mounted on the mounting rod (102) and is parallel to the positioning plate (101). The side wing (202) is vertically mounted on the edge of the base plate (201) and is provided with a limiting groove (203).

2. The adjustable rebar protective layer thickness control device according to claim 1, characterized in that: The height adjustment component (3) includes a nut (301) and a washer (302), both of which are mounted on the mounting rod (102), and there are multiple nuts (301) and washers (302).

3. The adjustable rebar protective layer thickness control device according to claim 2, characterized in that: The total height of the height adjustment components (3) shall not be less than the required thickness of the steel reinforcement protective layer, and shall not be more than 2 cm higher than the thickness of the steel reinforcement protective layer.

4. The adjustable rebar protective layer thickness control device according to claim 1, characterized in that: The position of the limiting groove (203) is set according to the spacing of the reinforcing bars.

5. The adjustable rebar protective layer thickness control device according to claim 1, characterized in that: The center of the positioning plate (101) is aligned with the center of the mounting rod (102).

6. The adjustable rebar protective layer thickness control device according to claim 5, characterized in that: An adjusting rod (103) is provided on the positioning plate (101). The adjusting rod (103) is vertically inserted through the positioning plate (101). The adjusting rods (103) are arranged in groups, and the group of adjusting rods (103) is symmetrically arranged with the mounting rod (102) as the center.

7. The adjustable rebar protective layer thickness control device according to claim 2, characterized in that: A fixing ring (4) is provided below the base plate (201), and the mounting rod (102) is sleeved inside the fixing ring (4). The fixing ring (4) matches the mounting rod (102).

8. The adjustable rebar protective layer thickness control device according to claim 1, characterized in that: The diameter of the hole at the junction of the base plate (201) and the mounting rod (102) is 5 mm larger than the diameter of the mounting rod (102).