A device for controlling the thickness of steel bar protective layer

Abstract

The utility model relates to the technical field of steel bar protective layer, and specifically discloses a steel bar protective layer thickness control device. The device comprises a device body arranged on a steel bar cage at the intersection of a main bar and a stirrup; the device body comprises steel bars arranged perpendicular to the steel bar cage; the steel bars are welded to the main bar and the stirrup. The qualified rate of the steel bar protective layer thickness can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar protective layers, in particular to a steel bar protective layer thickness control device. Background Art

[0002] Reinforced concrete structure is a widely used structural form in current construction projects. A certain distance of concrete protective layer needs to be reserved in reinforced concrete components. The concrete protective layer is generally located between the steel bars and the formwork. Its main function is to protect the steel bars from oxidation, rust and damage. In traditional processes, the thickness of the steel bar protective layer is usually controlled by placing concrete pads of the same strength grade between the steel bars and the formwork. The quality of such concrete pads is usually uneven. In the construction of bridge pier structures, the formwork generally uses a standardized steel formwork, which has high strength and hardness. During the reinforcement and adjustment of the formwork, the movement of the formwork can easily lead to the breakage of the concrete pad, thereby affecting the qualified rate of the thickness of the pier steel bar protective layer. In addition, traditional concrete pads need to be fixed with wire ties, but the presence of wire ties can easily interfere with the steel bar protective layer detector, thereby affecting the qualified rate of the steel bar protective layer thickness detection. Utility Model Content

[0003] The utility model provides a device for controlling the thickness of a steel bar protective layer, which can overcome the defects of the prior art.

[0004] According to the utility model, a steel bar protective layer thickness control device comprises: a device body arranged on a steel bar cage at the intersection of main bars and stirrups; the device body comprises steel bars arranged perpendicular to the steel bar cage; and the steel bars are welded to the main bars and stirrups.

[0005] Through the utility model, after the template and the steel cage are installed, the staff needs to reinforce and adjust the template. During the process of reinforcing and adjusting the template, the template will come into contact with the steel bars, and hit or squeeze the steel bars; since the steel bars are hard and the steel bars and the steel cage are welded, the connection strength between the steel bars and the steel cage is strong, so the steel bars themselves are not easily deformed under the impact or squeezing of the template; compared with the prior art, the steel bars are not easily broken or deformed under the impact of the template, thereby improving the qualified rate of the thickness of the steel bar protective layer; and there are no other fixing devices at the connection between the steel bars and the steel cage, so it will not interfere with the steel bar protective layer detector.

[0006] Preferably, one end of the steel bar is covered with a sleeve.

[0007] With the utility model, after the formwork and the steel cage are installed, concrete needs to be poured into the formwork, and the formwork needs to be removed after the concrete solidifies. After the formwork is removed, one end of the steel bar will be exposed to the outside, and the sleeve can be used to protect the steel bar, thereby preventing the steel bar from being exposed to the outside for a long time and being corroded, which affects the durability of the reinforced concrete.

[0008] Preferably, a first extrusion portion in a hemispherical shape is provided at one end of the sleeve away from the steel bar, and a second extrusion portion in a hemispherical shape and fitting with the first extrusion portion is provided at one end of the steel bar extending into the sleeve.

[0009] Through the utility model, when the shape of the template is arc-shaped, the sleeve at one end of the steel bar is against the template, and the first extrusion part at the front end of the sleeve is in point contact with the template, which effectively reduces the gap between the template and the pad in the form of surface contact of ordinary protective layer pads in the construction of arc-shaped structures, causing dimensional errors, thereby improving the control accuracy of the protective layer.

[0010] Preferably, the sleeve is made of polytetrafluoroethylene plastic.

[0011] Through the utility model, the polytetrafluoroethylene plastic has stable performance, high strength, high wear resistance, good performance, long service life, and can better adapt to concrete.

[0012] Preferably, the steel bar is round steel with a diameter of 10 mm and a length of 70 mm.

[0013] The utility model can effectively avoid damage during transportation, installation, template reinforcement and concrete pouring impact due to the high strength of the round steel.

[0014] Preferably, the sleeve has an inner diameter of 10 mm, an outer diameter of 12 mm, a wall thickness of 2 mm, and a length consistent with the net protective layer size of the steel bar protective layer.

[0015] Through the utility model, the length of the sleeve is consistent with the net protective layer size of the steel bar protective layer, and sleeves of different lengths can be manufactured according to different construction scenes, thereby effectively controlling the thickness of the steel bar protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation position of the device body in Example 1.

[0017] Figure 2 This is a schematic diagram of the device body in Example 1.

[0018] Figure 3 Schematic diagram of the steel bars in Example 1.

[0019] Figure 4 Schematic diagram of the sleeve in Example 1. DETAILED DESCRIPTION

[0020] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0021] Example 1

[0022] like Figure 1-4 As shown, this embodiment provides a device for controlling the thickness of a steel bar protective layer, including a device body 120 disposed on a steel cage 110 at the intersection of a main bar and a stirrup; the device body 120 includes steel bars 210 disposed perpendicular to the steel cage 110; and the steel bars 210 are welded to the main bars and stirrups.

[0023] Through this embodiment, after the template and the steel cage 110 are installed, the staff needs to reinforce and adjust the template. During the process of reinforcing and adjusting the template, the template will come into contact with the steel bars 210, and hit or squeeze the steel bars 210; since the steel bars 210 are relatively hard and the steel bars 210 and the steel cage 110 are welded, the connection strength between the steel bars 210 and the steel cage 110 is relatively strong, so the steel bars 210 themselves are not easily deformed under the impact or squeezing of the template; compared with the prior art, the steel bars 210 are not easily broken or deformed under the impact of the template, thereby improving the qualified rate of the thickness of the steel bar protective layer; and there are no other fixing devices at the connection between the steel bars 210 and the steel cage 110, so it will not interfere with the steel bar protective layer detector.

[0024] In this embodiment, a sleeve 220 is sleeved on one end of the steel bar 210 .

[0025] Through this embodiment, after the formwork and the steel cage 110 are installed, concrete needs to be poured into the formwork, and the formwork needs to be removed after the concrete solidifies. After the formwork is removed, one end of the steel bar 210 will be exposed to the outside. Through the protection of the sleeve 220, the steel bar 210 is prevented from being exposed to the outside for a long time and being corroded, which affects the durability of the reinforced concrete.

[0026] In this embodiment, the sleeve 220 has a first extrusion portion 410 in a hemispherical shape at one end away from the steel bar 210 , and the steel bar 210 has a second extrusion portion 310 in a hemispherical shape and in contact with the first extrusion portion 410 at one end extending into the sleeve 220 .

[0027] Through this embodiment, when the shape of the template is arc-shaped, the sleeve 220 at one end of the steel bar 210 is against the template, and the first extrusion portion 410 at the front end of the sleeve 220 is in point contact with the template, which effectively reduces the gap between the template and the pad in the form of surface contact of ordinary protective layer pads in the construction of arc-shaped structures, causing dimensional errors, thereby improving the control accuracy of the protective layer.

[0028] In this embodiment, the sleeve 220 is made of polytetrafluoroethylene plastic.

[0029] Through this embodiment, polytetrafluoroethylene plastic has stable performance, high strength, high wear resistance, good performance, long life, and can better adapt to concrete.

[0030] In this embodiment, the steel bar 210 is a round steel bar with a diameter of 10 mm and a length of 70 mm.

[0031] Through this embodiment, due to the high strength of the round steel, damage during transportation, installation, formwork reinforcement and concrete pouring impact can be effectively avoided.

[0032] In this embodiment, the sleeve 220 has an inner diameter of 10 mm, an outer diameter of 12 mm, a wall thickness of 2 mm, and a length that is consistent with the net protective layer size of the steel bar protective layer.

[0033] Through this embodiment, the length of the sleeve 220 is consistent with the net protective layer size of the steel bar protective layer. Sleeves 220 of different lengths are manufactured according to different construction scenarios, thereby effectively controlling the thickness of the steel bar protective layer.

[0034] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0035] The above is a schematic description of the present invention and its implementation methods, which is not restrictive. The embodiments shown are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A steel bar protective layer thickness control device, characterized in that: The device comprises a device body (120) arranged on a steel cage (110) at the intersection of a main steel bar and a stirrup; the device body (120) comprises steel bars (210) arranged perpendicular to the steel cage (110); and the steel bars (210) are welded to the main steel bars and the stirrups.

2. A steel bar protective layer thickness control device according to claim 1, characterized in that: One end of the steel bar (210) is covered with a sleeve (220).

3. A steel bar protective layer thickness control device according to claim 2, characterized in that: A first extrusion portion (410) in a hemispherical shape is provided at one end of the sleeve (220) away from the steel bar (210), and a second extrusion portion (310) in a hemispherical shape and in contact with the first extrusion portion (410) is provided at one end of the steel bar (210) extending into the sleeve (220).

4. A steel bar protective layer thickness control device according to claim 2, characterized in that: The sleeve (220) is made of polytetrafluoroethylene plastic.

5. A steel bar protective layer thickness control device according to claim 1, characterized in that: The steel bar (210) is a round steel bar with a diameter of 10 mm and a length of 70 mm.

6. A steel bar protective layer thickness control device according to claim 2, characterized in that: The sleeve (220) has an inner diameter of 10 mm, an outer diameter of 12 mm, a wall thickness of 2 mm, and a length consistent with the net protective layer size of the steel bar protective layer.

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