Equipment for measuring bending center diameter in processing of reinforcing steel bar in concrete structure

Abstract

The utility model relates to equipment for measuring the bending center diameter of reinforcing steel bar processing in a concrete structure, which comprises a shell (1), a slide rail (2), scales (3), a slide block (4) and instructions and standards (5) are arranged in the shell (1), and the equipment is characterized in that the shell (1) is a transparent plastic plate which is a semicircle with the radius of 200mm, three grooves with angles are formed in the plate surface, the shell (1) is called as the slide rail (2), the slide block (4) with a pointer is arranged in the slide rail (2), and the scale (3) is arranged in the slide rail (2). And instructions and standards (5) are printed on the surface of the shell. In order to ensure the intuition of data, the device adopts a transparent plastic plate, all scale marks are printed on the plate, the scale marks and the marks are prevented from being abraded in the using process, the practical situation that the operation of measuring the bending center diameter of the reinforcing steel bar in the past is not feasible needs to be solved, and the bending center diameter of the reinforcing steel bar is measured through a more direct and clearer method. And the bending center diameters corresponding to the reinforcing steel bars of various specifications in the actual machining and bending process are found out.

Description

Technical Field

[0001] The utility model discloses a device for measuring the diameter of the bending center of a steel bar processed in a concrete structure, and relates to a device for detecting whether the bending of the steel bar processed in the construction of a bridge or culvert meets the requirements. Background Art

[0002] In the construction of highway projects, CNC machinery and equipment are used for centralized unloading and processing of steel bars in special workshops, which has been widely used. This practice has a good effect on ensuring the quality of the project and improving the quality of the project. At the same time, it is also a concrete manifestation of standardized construction. The bending of steel bars is also clearly required in the highway construction technical specifications. Too large bending center (steel bending diameter) or too small bending center is not conducive to the installation or stability of steel bars. Reasonable control of the size of the bending center diameter will help improve the use effect and strength of steel bars and ensure the stability and safety of the project. For processed steel bars, the original method of re-testing the diameter of the steel bar bending center has no clear provisions, and the measurement method of the bending center diameter only exists at the theoretical level: make tangents to any two points of the arc segment, and the intersection of the extension lines perpendicular to the two tangents is the radius of the circle, and twice the radius is the diameter. In the actual measurement process, it is difficult to accurately find the tangent of the steel bar arc segment, and there is no way to accurately find the vertical extension line of the two tangents. The operation is very complicated and inaccurate. Summary of the invention

[0003] The utility model needs to solve the practical situation that it is not feasible to measure the bending center diameter of steel bars in the past, and quickly and accurately find out the bending center diameters corresponding to steel bars of various specifications in the actual processing and bending process through a more direct and clearer method.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for measuring the diameter of the bending center of steel bars in a concrete structure comprises a shell, wherein the interior of the shell comprises a slide rail, a scale, a slider, instructions for use and a standard. The shell is a transparent plastic plate having a semicircular size of 200 mm in radius and three angled grooves on the plate surface, called a slide rail. A slider with a pointer is installed in the slide rail, and the surface of the shell is also printed with instructions for use and a standard.

[0006] Preferably, the slider is made of metal and can slide freely in the slide rail, and the bottom of the slider has a 16 mm portion extending out of the housing for being close to the object to be measured.

[0007] Preferably, the housing is a transparent plastic plate, which makes it easy to observe whether the slider is in close contact with the object to be measured.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] In order to ensure the intuitiveness of the data, this device uses a transparent plastic plate, and all scale marks are printed on the plate to prevent the scale lines and marks from being worn during use.

[0010] To ensure the durability of the equipment, the slider is made of metal. The bottom of the slider slightly protrudes from the plastic plate and is used to be close to the object to be measured (the bend center of the steel bar). The nut on the top can be tightened, and the slider can move freely on the slide rail when the nut is loosened. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: 1 housing; 2 slide rail; 3 scale; 4 slider; 5 instructions and standards DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the embodiments:

[0014] Example 1

[0015] like Figure 1 As shown, a device for measuring the diameter of the bending center of steel bars in a concrete structure comprises a housing (1), a slide rail (2), a scale (3), a slider (4), instructions for use and a standard (5).

[0016] As shown, by sliding the adjustment slider (4), the slider (4) is pushed outward to make it close to the arc section of the bent steel bar. If the pointers of the three sliders (4) can all indicate a uniform scale value (3), it is the bending center diameter of the steel bar during processing.

[0017] In accordance with the national recommended standards, the scale (3) of this equipment meets the specifications of the common steel bar processing bend diameter in daily testing. The range of the steel bar processing bend diameter measured by this equipment is between 15mm and 200mm.

[0018] The shell (1) includes a slide rail (2), a scale (3), a slider (4), instructions for use and a standard (5), and is characterized in that: the shell (1) is a transparent plastic plate with a semicircular size of 200 mm radius and three angled grooves on the plate surface, which is called the slide rail (2). A slider (4) with a pointer is installed in the slide rail (2), and instructions for use and a standard (5) are also printed on the surface of the shell. The shell (1) is a transparent plastic plate with a semicircular size of 200 mm radius and three angled grooves on the plate surface, which is called the slide rail (2). A slider (4) with a pointer is installed in the slide rail (2), and instructions for use and a standard (5) are also printed on the surface of the shell. The slider (4) is made of metal and can slide freely in the slide rail (2). The bottom of the slider (4) has a 16 mm portion extending out of the shell (1) for close contact with the object to be measured. The shell (1) is a transparent plastic plate, which makes it easy to observe whether the slider (4) is close to the object to be measured.

[0019] The common hot-rolled ribbed and round steel bar specifications and diameters on the market are shown in Table 1

[0020] Table 1. Common steel bar diameters

[0021]

[0022]

[0023] *Because 36mm, 40mm and 50mm are not commonly used steel bars, this patent is not used for the detection of these three diameters. The requirements of the steel bar processing specification for the production of main steel bars are shown in Table 2

[0024] Table 2. Requirements of steel bar processing specifications for the production of main steel bars

[0025]

[0026]

[0027] *In the table, d is the diameter of the steel bar and D is the diameter of the bend of the steel bar.

[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A device for measuring the diameter of the bending center of steel bars in a concrete structure, comprising a housing (1), wherein the housing (1) includes a slide rail (2), a scale (3), a slider (4), instructions for use and a standard (5), and is characterized in that: The housing (1) is a transparent plastic plate with a semicircular shape of a radius of 200 mm and three angled grooves on the plate surface, called slide rails (2). A slider (4) with a pointer is installed in the slide rail (2). Instructions for use and standards (5) are also printed on the surface of the housing.

2. The device for measuring the diameter of the steel bar bending center in the concrete structure according to claim 1 is characterized in that: The slider (4) is made of metal and can slide freely in the slide rail (2). The bottom of the slider (4) has a portion extending 16 mm out of the housing (1) for being close to the object to be measured.

3. The device for measuring the diameter of the steel bar bending center in the concrete structure according to claim 1, characterized in that: The housing (1) is a transparent plastic plate, which makes it easy to observe whether the slider (4) is in close contact with the object to be measured.

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