Multipurpose Assistant Guide for Non-Destructive Strength Measurement

Abstract

The present invention comprises a rectangular grid drawing section (200) formed by perforating a main body (100) having a predetermined thickness, capable of drawing a Schmidt hammer dot grid (20) on a concrete surface (10); A multi-purpose concrete strength measurement auxiliary guide is provided, characterized by being composed including And in the ultrasonic sensor installation part (500) of the above main body (100), Two or more ultrasonic sensors (S) are installed, A multi-purpose concrete strength measurement auxiliary guide is provided, characterized by being able to monitor the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete. The above ultrasonic sensors (S) are installed in a line at regular intervals from each other, with each installation location named a reference point, a first measurement point, a second measurement point, … …, and the nth measurement point. A multi-purpose concrete strength measurement auxiliary guide is provided, characterized in that the ultrasonic waves generated from the ultrasonic sensor (S) of the above reference point reach each of the first measurement point, the second measurement point, ..., and the nth measurement point, and the time (μs) is measured by the ultrasonic sensor (S) installed at each of the first measurement point, the second measurement point, ..., and the nth measurement point and transmitted to the control unit (900).

Description

Technology Field

[0001] The present invention relates to a multi-purpose concrete strength measurement auxiliary guide that allows for easily drawing a Schmidt hammer dot grid on a concrete surface and easily monitoring the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete. Background Technology

[0002] FIG. 1 illustrates a conventional Schmidt hammer test sheet, and

[0003] Figure 2 illustrates the process of drawing a dot grid on a concrete surface, such as a wall or floor, and measuring the concrete strength with a Schmidt hammer.

[0004] A method utilizing the rebound force of a Schmidt hammer is used as a representative non-destructive testing method for concrete.

[0005] It has been pointed out that this conventional method has the disadvantage that it is difficult to accurately draw a grid of dots with 3cm intervals as in Fig. 1, as in Fig. 2.

[0006] FIG. 3 illustrates a conventional ultrasonic measuring device composed of an ultrasonic sensor and a control unit as a method of non-destructive testing of concrete, and

[0007] Figure 4 illustrates the appearance of a reference point, a first measurement point, and a second measurement point marked on a concrete surface using the equipment of Figure 3.

[0008] And Fig. 5 illustrates the measurement of the arrival time of the ultrasound generated at the reference point in Fig. 4 reaching the first measurement point, and

[0009] Figure 6 illustrates the measurement of the arrival time of the ultrasound generated at the reference point in Figure 4 reaching the second measurement point, and the calculation of the speed of the ultrasound using the distance between the reference point and the second measurement point and the arrival time.

[0010] As described above, the ultrasonic travel speed (m / s) was measured by sequentially measuring the ultrasonic arrival time (μs) inside the concrete at the first measurement point, second measurement point, etc., at intervals of about 10 cm from the reference point.

[0011] This conventional method has been criticized for the disadvantage of taking a long time to work by manually moving the measurement points one by one using only two ultrasonic sensors (S).

[0012] Accordingly, in order to solve the aforementioned problems, the inventors have developed a multi-purpose concrete strength measurement auxiliary guide that allows for easy drawing of a Schmidt hammer dotting grid on a concrete surface and easy simultaneous monitoring of the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete at multiple measurement points. Prior art literature

[0013] [Reference 1] Republic of Korea Registered Patent No. 10-2402333 'Schmidt hammer equipped with a vertical auxiliary unit', May 23, 2022 [Reference 2] Republic of Korea Registered Patent No. 10-2485521 'Schmidt hammer mounting device for non-destructive inspection of high-altitude concrete', January 3, 2023 The problem to be solved

[0014] The present invention is presented to resolve the various problems of the prior art as described above.

[0015] The purpose is to provide a multi-purpose auxiliary guide for measuring concrete strength that allows for easy drawing of a Schmidt hammer dot grid on a concrete surface and easy monitoring of the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete. means of solving the problem

[0016] To solve the above-mentioned technical problem, the present invention comprises a rectangular grid drawing section (200) formed by perforating a main body (100) having a predetermined thickness, capable of drawing a Schmidt hammer dot grid (20) on a concrete surface (10);

[0017] A multi-purpose concrete strength measurement auxiliary guide is provided, characterized by being composed including

[0018] And in the ultrasonic sensor installation part (500) of the above main body (100),

[0019] Two or more ultrasonic sensors (S) are installed,

[0020] A multi-purpose concrete strength measurement auxiliary guide is provided, characterized by being able to monitor the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete.

[0021] The above ultrasonic sensors (S) are installed in a line at regular intervals from each other, with each installation location named a reference point, a first measurement point, a second measurement point, … …, and the nth measurement point.

[0022] A multi-purpose concrete strength measurement auxiliary guide is provided, characterized in that the ultrasonic waves generated from the ultrasonic sensor (S) of the above reference point reach each of the first measurement point, the second measurement point, ..., and the nth measurement point, and the time (μs) is measured by the ultrasonic sensor (S) installed at each of the first measurement point, the second measurement point, ..., and the nth measurement point and transmitted to the control unit (900). Effects of the invention

[0023] According to the present invention, a multi-purpose concrete strength measurement auxiliary guide is provided that allows for easily drawing a Schmidt hammer dot grid on a concrete surface and easily monitoring the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete. Brief explanation of the drawing

[0024] Figure 1 shows a typical Schmidt hammer test sheet. Figure 2 illustrates the process of drawing a dot grid on a concrete surface, such as a wall or floor, and measuring the concrete strength with a Schmidt hammer. Figure 3 illustrates a conventional ultrasonic measuring device composed of an ultrasonic sensor and a control unit as a method of non-destructive inspection of concrete. Figure 4 illustrates the appearance of a reference point, a first measurement point, and a second measurement point marked on a concrete surface using the equipment of Figure 3. Figure 5 illustrates the measurement of the arrival time of the ultrasound generated at the reference point in Figure 4 reaching the first measurement point. Figure 6 illustrates the measurement of the arrival time of the ultrasound generated at the reference point in Figure 4 reaching the second measurement point, and the calculation of the speed of the ultrasound using the distance between the reference point and the second measurement point and the arrival time. FIG. 7 illustrates a multi-purpose concrete strength measurement auxiliary guide of the present invention. Figure 8 is an enlarged view of the grid drawing section in Figure 7. Figure 9 illustrates an ultrasonic sensor used in the present invention. FIG. 10 is an enlarged view of the ultrasonic sensor installation part in the present invention. Figure 11 illustrates the ultrasonic arrival time (μs) measured by the control unit in the present invention. Specific details for implementing the invention

[0025] The multi-purpose concrete strength measurement auxiliary guide of the present invention is,

[0026] A rectangular grid drawing section (200) formed by perforating a main body (100) having a predetermined thickness, capable of drawing a Schmidt hammer dot grid (20) on a concrete surface (10);

[0027] Characterized by being composed including,

[0028] In the ultrasonic sensor installation part (500) of the above main body (100),

[0029] Two or more ultrasonic sensors (S) are installed,

[0030] It is characterized by being able to monitor the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside concrete, and

[0031] The above ultrasonic sensors (S) are installed in a line at regular intervals from each other, with each installation location named a reference point, a first measurement point, a second measurement point, … …, and the nth measurement point.

[0032] The ultrasonic sensor (S) installed at each of the first measurement point, second measurement point, ..., and nth measurement point measures the time (μs) during which the ultrasonic waves generated from the ultrasonic sensor (S) of the above reference point reach each of the first measurement point, second measurement point, ..., and nth measurement point, and transmits this time to the control unit (900).

[0033] The present invention will be explained in more detail below through an embodiment in which the concept of the present invention as described above is preferably implemented, together with the attached drawings.

[0034] FIG. 7 illustrates a multi-purpose concrete strength measurement auxiliary guide of the present invention, and

[0035] Figure 8 is an enlarged view of the grid drawing section in Figure 7.

[0036] A ruler is formed on the outer edge of the grid drawing section (200), and

[0037] A horizontal slot (210) in the horizontal direction and a vertical slot (220) in the vertical direction are formed spaced apart from the grid drawing section (200).

[0038] And a horizontal ruler (250) and a vertical ruler (260) marked with a ruler are separately provided,

[0039] Guide protrusions (270) protruding downward from both ends of the horizontal ruler (250) and the vertical ruler (260) are detachably fitted into the horizontal slot (210) and the vertical slot (220).

[0040] Therefore, since the horizontal ruler (250) and the vertical ruler (260) can move while maintaining parallelism, the Schmidt hammer dot grid (20) can be drawn accurately at predetermined intervals.

[0041] FIG. 9 illustrates an ultrasonic sensor used in the present invention, and

[0042] FIG. 10 is an enlarged view of the ultrasonic sensor installation part in the present invention.

[0043] And Fig. 11 shows the ultrasonic arrival time (μs) measured in the control unit in the present invention.

[0044] The above ultrasonic sensor (S) is inserted into the adapter (600) and then the adapter (600) is coupled to the ultrasonic sensor installation part (500).

[0045] The above ultrasonic sensor (S) detects in real time when ultrasonic waves are generated on the lower surface and reach, and a terminal (S1) is protruded on the upper surface.

[0046] The above adapter (600) is generally in the shape of a cuboid, and the ultrasonic sensor (S) is inserted from the top, while the lower surface of the ultrasonic sensor (S) is exposed to the outside so as to come into contact with the concrete surface (10).

[0047] The above ultrasonic sensor installation part (500) forms a slot with an overall long length, and several of the above adapters (600) are connected in a row.

[0048] Since the side of the adapter (600) and the contact part of the ultrasonic sensor installation part (500) use a conventional moving and fixing means (610) such as a spring, a gear, etc.,

[0049] The above adapter (600) can be easily moved and mounted by the user with their hands.

[0050] Accordingly, the user can arrange n adapters (600), each equipped with an ultrasonic sensor (S) at the first measurement point, the second measurement point, … …, and the nth measurement point, at regular intervals from each other.

[0051] FIG. 7 illustrates a multi-purpose concrete strength measurement auxiliary guide of the present invention, and

[0052] Figure 11 illustrates the ultrasonic arrival time (μs) measured by the control unit in the present invention.

[0053] A terminal wire (not shown) is installed at the terminal (S1) of the above ultrasonic sensor (S) to enable transmission and reception of signals with the control unit (900).

[0054] The present invention has the feature that the ultrasonic travel speed (m / s) can be measured by simultaneously measuring the ultrasonic arrival time (μs) inside the concrete at a reference point and at a first measurement point, a second measurement point, etc., at intervals of about 10 cm, with only one operation of the control unit (900).

[0055] In addition, there is a feature that allows the spacing between ultrasonic sensors (S), such as those given at intervals of about 10 cm, to be freely adjusted and fixed.

[0056] In conclusion, the present invention is,

[0057] It features a multi-purpose concrete strength measurement auxiliary guide that allows for easy drawing of a Schmidt hammer dot grid on a concrete surface and easy monitoring of the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete.

[0058] Although the present invention has been described in relation to preferred embodiments as mentioned above, various modifications and variations are possible within the scope of the invention without departing from its essence, and the invention can be used in various fields.

[0059] Accordingly, the claims of the present invention include modifications and variations that fall within the true scope of the invention. Explanation of the symbols

[0060] S: Ultrasonic sensor S1: Terminal 10: Concrete surface 20: RBI Grid 100: Main body 200: Grid Drawing Department 210: Horizontal slot 220: Vertical slot 250: Horizontal ruler 260: Vertical ruler 270: Guide protrusion 500: Ultrasonic sensor installation section 600: Adapter 610: Means of movement and fixation 900: Control unit

Claims

Claim 1 delete Claim 2 The device is configured to include a rectangular grid drawing section (200) formed by perforating a main body (100) having a predetermined thickness, which can draw a Schmidt hammer point grid (20) on a concrete surface (10); a ruler is formed on the outer edge of the grid drawing section (200); a horizontal slot (210) in the horizontal direction and a vertical slot (220) in the vertical direction are formed spaced apart from the grid drawing section (200); a horizontal ruler (250) and a vertical ruler (260) marked with a ruler are separately provided; and guide protrusions (270) protruding downward from both ends of the horizontal ruler (250) and the vertical ruler (260) are detachably fitted into the horizontal slot (210) and the vertical slot (220), so that the horizontal ruler (250) and the vertical ruler (260) can move while maintaining parallelism, thereby allowing the Schmidt hammer point grid (20) to be drawn at predetermined intervals The device is characterized by being able to draw accurately, and the ultrasonic sensor installation part (500) of the main body (100) is equipped with two or more ultrasonic sensors (S) to monitor the ultrasonic arrival time (μs) and ultrasonic travel speed (m / s) inside the concrete, wherein the ultrasonic sensors (S) are inserted into an adapter (600) and the adapter (600) is coupled to the ultrasonic sensor installation part (500), the adapter (600) is in the shape of a cuboid and the ultrasonic sensors (S) are inserted from the top, and the lower surface of the ultrasonic sensors (S) is exposed to the outside and contacts the concrete surface (10), the ultrasonic sensor installation part (500) forms a slot and multiple adapters (600) are coupled in a row, and the contact part between the side of the adapter (600) and the ultrasonic sensor installation part (500) uses a moving and fixing means (610), so that the adapter (600) can be easily moved and mounted by hand by the user. Multipurpose concrete strength measurement auxiliary guide.

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