KR102591428B1 - Apparatus for measuring crack depth for safety inspection, precise safety diagnosis, and performance evaluation - Google Patents

Abstract

The crack depth measuring device of the present invention is a crack depth measuring device for safety inspection, precise safety diagnosis, and performance evaluation, comprising: a probe member having a probe pin inserted into a crack occurring in a structure; A cylindrical measuring body with a scale displayed in the longitudinal direction and a screw thread formed on the outer peripheral surface; A moving member coupled to the probe member and moving within the measuring body to indicate on the scale the length at which the probe pin is inserted into the crack; a pin support spring that supports the moving member by elastic force within the measuring body so that the probe pin protrudes out of the measuring body; And in order to protect the probe pin protruding outside of the measurement body, it includes a cylindrical cover member screwed to the measurement body by a screw thread formed on the inner peripheral surface, so that a probe pin suitable for the shape of the crack can be selected. , it is effective in measuring cracks that occur in various shapes, and by including a writing member inside, the operator does not need to carry a separate writing instrument to write the crack depth measurement results, providing convenience to the operator. This has the effect of improving safety management efficiency by allowing the crack depth measurement results to be displayed immediately at the crack occurrence area.

Description

Crack depth measuring device for safety inspection, precise safety diagnosis, and performance evaluation {APPARATUS FOR MEASURING CRACK DEPTH FOR SAFETY INSPECTION, PRECISE SAFETY DIAGNOSIS, AND PERFORMANCE EVALUATION}

The present invention relates to a crack depth gauge for measuring the depth of cracks in a structure for safety inspection, precise safety diagnosis, and performance evaluation.

In general, safety diagnosis is performed on structures on a regular or irregular basis to ensure the safety of the structure. If the structure is unstable, cracks occur, so when performing safety diagnosis, the parts where cracks occur are intensively inspected.

When inspecting a crack, the width and depth of the crack are measured to determine the possibility of crack growth and whether the crack is growing.

Since the width of a crack can be easily observed from the outside, it can be easily measured with a measuring device that can measure length, such as a ruler or vernier caliper, but the depth of the crack is difficult to determine from the outside.

Therefore, various technologies for measuring the depth of cracks have been disclosed in the related art.

In relation to this, Korean Patent Publication No. 10-2325801 describes various embodiments related to a crack depth measuring device for structural safety diagnosis, which is configured to allow the measuring needle to be drawn in or out of the product by elastic force in order to measure the crack depth of the structure. , According to one embodiment, a cylindrical housing having first and second openings formed on the front and rear sides and at least one guide hole formed on the side; It is drawn in or out of the first opening of the cylindrical housing depending on use. a measuring needle inserted into the depth of a crack in the structure while being pulled out toward the structure; A measuring member disposed in the cylindrical housing, which allows the measuring needle to be inserted or withdrawn from the first opening according to use, and moves while the measuring needle is inserted into the depth of the crack and moves to the first opening by elastic force. the measuring member measuring the depth of the crack by sliding in a direction or a second direction opposite to the first direction; and an elastic member disposed within the cylindrical housing and providing elastic force so that the measurement member can slide. A crack depth measuring device for structural safety diagnosis is being disclosed.

According to the above patent, the conventional crack depth measuring device for structural safety diagnosis can easily measure the depth of a crack through a measuring needle by making it easy to carry and move the crack depth measuring device, and the measuring needle is inserted into the housing to measure the depth of the measuring needle. Damage could be prevented.

However, the conventional crack depth measuring device for structural safety diagnosis was inconvenient in that each time the user wanted to use it, he or she had to hold the measuring needle inserted inside and then pull it out to the outside and fix it.

In addition, the conventional crack depth measuring device for structural safety diagnosis had a problem in that it was difficult to measure cracks occurring in various shapes because the shape of the measuring needle was fixed. In particular, there was a problem in that it was difficult to measure fine cracks, and the length of the crack could not be accurately measured due to the nature of the crack width narrowing as it progressed from the starting point of the crack.

Korean Patent No. 10-2325801 (announced on November 12, 2021)

The present invention was devised to solve the above-mentioned problems. By detachably combining a plurality of probe pins of different shapes and materials, it is possible to select a probe pin that matches the shape of the crack, which results in it occurring in various shapes. We would like to provide a crack depth measuring device that can measure cracks.

In addition, the present invention aims to provide a crack depth measuring device with improved durability by configuring the probe member to be detachable so that it can be easily replaced when the probe member is worn.

In addition, the present invention further includes a writing member inside, so that the worker does not need to carry a separate writing instrument to mark the crack depth measurement results, thereby providing convenience to the worker, and the crack depth measurement result at the crack occurrence site. We aim to provide a crack depth measuring device that can improve safety management efficiency by allowing immediate marking.

In addition, the present invention seeks to provide a crack depth measuring device that can improve its usability by easily fixing the probe pin provided for measuring the crack depth as needed.

A crack depth measuring device according to an embodiment of the present invention for achieving the above-described task includes a probe member having a probe pin inserted into a crack occurring in a structure; A cylindrical measuring body with a scale displayed in the longitudinal direction and a screw thread formed on the outer peripheral surface; A moving member coupled to the probe member and moving within the measuring body to indicate on the scale the length at which the probe pin is inserted into the crack; a pin support spring that supports the moving member by elastic force within the measuring body so that the probe pin protrudes out of the measuring body; and a cylindrical cover member screwed to the measurement body through threads formed on an inner peripheral surface to protect the probe pin protruding outside the measurement body.

Preferably, the probe member includes one of a plurality of probe pins of different shapes and materials, and can be detachably coupled to the moving member.

Preferably, the crack depth measuring device further includes a writing member coupled to the moving member and accommodated in the measuring body, and the moving member each has first and second moving holes formed to face each other in the longitudinal direction of the measuring body. It includes first and second moving protrusions that protrude and contact the flange formed at the inlet of the cover member, and when the measuring body is inserted into the interior of the cover member by screwing with the cover member, the first and second moving protrusions As the first and second moving protrusions move along the first and second moving holes, the writing member can be projected through the protruding hole formed in the measuring body in a direction opposite to the protruding direction of the probe pin.

Preferably, the cover member is screw-fastened with the measuring body in a direction opposite to the protruding direction of the probe pin in the direction of inserting the measuring body, and fixes the position of the moving member with the probe pin protruding to its maximum extent. The tip of the probe pin, which protrudes to the maximum, can exert force to remove foreign substances formed inside the crack that interfere with insertion of the probe pin by a force applied from the outside. .

The crack depth measuring device provided by the present invention can select a probe pin suitable for the shape of the crack by detachably combining a plurality of probe pins of different shapes and materials, thereby measuring cracks that occur in various shapes. There is an effect that can be done.

In addition, the present invention configures the probe member to be detachable, so that it can be easily replaced when the probe member is worn, which has the effect of improving durability.

In addition, the present invention further includes a writing member inside, so that the worker does not need to carry a separate writing instrument to mark the crack depth measurement results, thereby providing convenience to the worker, and the crack depth measurement result at the crack occurrence site. It has the effect of improving safety management efficiency by allowing it to be displayed immediately.

In addition, the present invention has the effect of improving the usability by easily fixing the probe pin provided for measuring the crack depth as needed.

Figure 1 is a perspective view of a crack depth measuring device according to an embodiment of the present invention.
Figure 2 is a bottom perspective view of a crack depth measuring device according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of a crack depth measuring device according to an embodiment of the present invention.
Figure 4 is an exploded perspective view of a crack depth measuring device according to an embodiment of the present invention.
Figures 5 and 6 are diagrams for explaining a method of measuring crack depth using a crack depth measuring device according to an embodiment of the present invention.
Figures 7 to 9 are diagrams for explaining a method for replacing a probe member of a crack depth measuring device according to an embodiment of the present invention.
Figure 10 is a diagram for explaining a method of operating a writing member provided in a crack depth measuring device according to an embodiment of the present invention.
Figure 11 is a diagram for explaining another use example of a crack depth measuring device according to an embodiment of the present invention.

Below, embodiments of the present invention will be described with reference to the attached drawings, and will be described in detail so that those skilled in the art can easily practice the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Meanwhile, in order to clearly explain the present invention in the drawings, parts unrelated to the description are omitted, and similar parts are given similar reference numerals throughout the specification. In addition, descriptions of parts that can be easily understood by those skilled in the art are omitted even if detailed descriptions are omitted.

Throughout the specification and claims, when it is said that a part includes a certain component, this means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

Figure 1 is a perspective view of a crack depth measuring device according to an embodiment of the present invention, Figure 2 is a bottom perspective view of a crack depth measuring device according to an embodiment of the present invention, and Figure 3 is a perspective view of a crack depth measuring device according to an embodiment of the present invention. It is a cross-sectional view of the crack depth measuring device, and Figure 4 is an exploded perspective view of the crack depth measuring device according to an embodiment of the present invention.

Referring to Figures 1 to 4, the crack depth measuring device 100 according to an embodiment of the present invention includes a probe member 110, a measuring body 120, a moving member 130, a pin support spring 140, and a cover. It includes a member 150 and a writing member 160.

The probe member 110 is provided with a probe pin 111 that is inserted into the crack C occurring in the structure. The probe pin 111 can be configured in various shapes (e.g., needle-shaped, cone-shaped, plate-shaped, etc.) and materials (e.g., plastic, vinyl, steel, etc.) that can be inserted into the crack (C).

The probe member 110 includes a probe coupling portion 112 that detachably couples the probe pin 111 to the moving member 130, and a probe coupling portion 112 for fixing/separating the probe pin 111 from the probe coupling portion 112. A probe rotation unit 113 that rotates the pin 111 may be provided. At this time, the probe coupling portion 112 may have threads formed on its outer peripheral surface for screwing with the moving member 130, which will be described later. In addition, the probe rotating part 113 is inserted into the hexagonal separating coupling hole 153 formed in the cover member 150, which will be described later, and has an outer surface in the form of a hexagonal pillar so that it rotates together when the cover member 150 rotates. can be formed. This is to easily rotate the probe member 110 for screw fastening or separation from the moving member 130.

The measuring body 120 has a cylindrical structure, a scale 121 is displayed in the longitudinal direction, and a screw thread 122 is formed on the outer peripheral surface. In addition, the measuring body 120 is formed in a direction opposite to the protruding direction of the probe pin 111, so that a protruding hole 123 through which a writing member 160, which will be described later, protrudes, is formed, and is formed to face each other in the longitudinal direction. First and second moving holes 124 and 125 are formed to guide the movement of the first and second moving protrusions 131 and 132, which will be described later.

At this time, it is preferable that the scale 121 is displayed on both sides of at least one of the first and second moving holes 124 and 125. This means that the first and second moving protrusions (131, 132) moving along the first and second moving holes (124, 125) depending on the depth at which the probe pin (111) is inserted into the crack (C) are aligned with the scale (121). This is to provide guidance.

Meanwhile, the screw thread 122 formed on the outer peripheral surface of the measuring body 120 is for screw fastening with the cover member 150, which will be described later. At this time, the screw thread 122 is the length of the measuring body 120 so that the cover member 150 can be screwed to the measuring body 120 from both the direction in which the probe pin 111 protrudes or the opposite direction. It must be formed throughout the direction.

The moving member 130 is combined with the probe member 110 and moves inside the measuring body 120 to display the length at which the probe pin 111 is inserted into the crack C on the scale 121. For this purpose, the moving member 130 includes first and second moving protrusions 131 and 132 moving along the first and second moving holes 124 and 125, and a probe coupling portion 112 are inserted and screwed together. To do this, a coupling groove 133 having threads formed on the inner peripheral surface may be provided. In addition, a fixing protrusion 134 for fixing the writing member 160, which will be described later, may be formed in the opposite direction of the coupling groove 133.

The pin support spring 140 supports the moving member 130 inside the measurement body 120 by elastic force so that the probe pin 111 protrudes out of the measurement body 120. For this purpose, the pin support spring 140 is installed between the moving member 130 and the inner surface of the measuring body 120 in a form that surrounds the writing member 160, which will be described later, and is installed in a direction to protrude the probe pin 111. After exerting elastic force and inserting the probe pin 111 into the crack, force is applied to bring the measuring body 120 into contact with the structure, and it is contracted to move the first and second moving protrusions 131 and 132 to the first and second It is moved inside the measuring body 120 along the moving holes 124 and 125.

The cover member 150 has a cylindrical structure into which the measuring body 120 is inserted, and in order to protect the probe pin 111 protruding out of the measuring body 120, the measuring body (120) is formed by a screw thread 154 formed on the inner peripheral surface. 120) and screw it together. At this time, the screw thread 154 may be formed only on a portion of the inner peripheral surface.

In particular, the cover member 150 protects the probe pin or protrudes the writing instrument when combined with the measurement body 120 to insert the measurement body 120 from one side of the measurement body 120 where the probe pin 111 protrudes. When combined with the measuring body 120 to insert the measuring body 120 from the other side of the measuring body 120 in the opposite direction from which the probe pin protrudes, it can operate in another embodiment.

At this time, the latter case is illustrated in Figure 11. Figure 11 is a diagram for explaining another example of use of the crack depth measuring device according to an embodiment of the present invention. Referring to Figure 11, a cover member ( 150) and the measuring body 120 are screwed together, and when combined with the measuring body to fix the position of the moving member 130 with the probe pin 111 protruding to the maximum, the end of the probe pin 111 Can exert force to remove foreign substances (D) formed inside the crack (C) that interfere with insertion of the probe pin (111) by force applied from the outside.

In this way, in order to allow the probe pin 111 to protrude as much as possible, the flange portion 152 in contact with the first and second moving protrusions 131 and 132 has the first and second moving protrusions 131 and 132, as illustrated in FIG. 11. The moving protrusions (131, 132) can be moved to the maximum within the first and second moving holes (124, 125).

Meanwhile, the position of the probe pin 111 that protrudes to the maximum from the measurement body 120 is fixed until an external force is applied to the cover member 150 to rotate the measurement body 120 in the direction in which it protrudes. Therefore, the probe pin 111 can be used for other purposes other than as a crack (C) depth measuring tool, and as a result, there is an advantage in improving the usability of the crack depth measuring device 100.

The writing member 160 is a writing instrument (e.g., chalk, etc.) that can write crack information (e.g., crack depth, measurement date, etc.) on a cracked structure, and is combined with the moving member 130 to form the measuring body 120. can be accommodated within. That is, the writing member 160 can be coupled to the moving member 130 by being inserted into the fixing protrusion 134, and the moving member 130 covers the measuring body 120 by screwing with the cover member 150. When inserted into the member 150, the first and second moving protrusions 131 and 132 move to the other side of the measuring body 120 along the first and second moving holes 124 and 125, thereby measuring The writing member 160 is protruded through the protruding hole 123 formed in the main body 120.

An embodiment of the present invention in which the writing member 160 operates in this way to protrude is illustrated in FIG. 10 . Figure 10 is a diagram for explaining the operation method of the writing member provided in the crack depth measuring device according to an embodiment of the present invention. Referring to Figure 10, the measuring body 120 is inserted from one side of the measuring body 120. When the cover member 150 is rotated in the direction of the arrow to is inserted into the cover member 150. At this time, the flange portion 152 in contact with the first and second moving protrusions 131 and 132 moves the first and second moving protrusions 131 and 132 to the other side of the measuring body 120, thereby supporting the pin. At the same time as the spring 140 is contracted, the writing member 160 is protruded out of the measuring body 120 through the protruding hole 123.

Meanwhile, the position of the writing member 160 protruding outside the measuring body 120 is fixed until the cover member 150 is rotated in the opposite direction to the arrow shown in the drawing by applying an external force.

Figures 5 and 6 are diagrams for explaining a method of measuring the crack depth using a crack depth measuring device according to an embodiment of the present invention. Figure 5 shows the crack depth measuring device before being inserted into the crack (C) formed in the structure. It is a perspective view, and Figure 6 is a cross-sectional view showing the state of the crack depth measuring device inserted into the crack (C).

Referring to Figures 5 and 6, after inserting the probe pin 111 into the crack C, when force is applied to bring the measurement body 120 into contact with the surface of the structure, the first and second moving protrusions 131, 132 moves inside the measuring body 120 along the first and second moving holes 124 and 125, thereby contracting the pin support spring 140. In this way, when the first and second moving protrusions (131, 132) move, at least one of the first and second moving protrusions (131, 132) moves at least one of the first and second moving holes (124, 125). The depth of the crack can be measured by using the scales 121 displayed on both sides of one as a guide.

FIGS. 7 to 9 are drawings illustrating a method for replacing the probe member of a crack depth measuring instrument according to an embodiment of the present invention. FIG. 7 is a perspective view illustrating the type of probe member 110, and FIG. 8 is a perspective view to explain a method of using the cover member 150 to replace the probe member 110, and FIG. 9 is a cross-sectional view to explain the process of separating the probe member 110.

Referring to FIGS. 1 to 7, the probe member 110 can be configured in various types depending on the shape of the probe pin 111. In the example of FIG. 7, the first probe has a cone-shaped probe pin 111. It illustrates a second probe member having a member and a plate-shaped probe pin (111a), and is an example of separating the first probe member from the moving member 130 and then combining the second probe member with the moving member 130. It shows.

The probe member 110 and the moving member 130 are coupled by mutual screw fastening. As they rotate by the rotational force applied to the probe rotating part 113, the screw thread formed on the outer peripheral surface of the probe coupling part 112 and the coupling groove ( The thread formed on the inner peripheral surface of 133) can be screwed.

At this time, in order to easily apply a rotational force to the probe rotation unit 113, as illustrated in FIG. 8, the probe rotation unit 113 is inserted into the separation coupling hole 153 formed in the cover member 150, By applying rotational force to the cover member 150, the probe rotation unit 113 can be rotated.

Figure 9 (a) shows a state in which the probe rotating part 113 is inserted into the separation coupling hole 153 formed in the cover member 150, and Figure 9 (b) shows the probe rotating part 113 as shown in Figure 9 (a). By inserting (113) into the separation coupling hole (153) and then rotating the cover member (150), the probe coupling portion (112) is separated from the coupling groove (133).

In this way, the crack depth measuring device of the present invention can select a probe pin that matches the shape of the crack by detachably combining a plurality of probe pins of different shapes and materials, thereby measuring cracks that occur in various shapes. There are features that can be done.

In addition, the present invention has the feature of configuring the probe member to be detachable so that it can be easily replaced when the probe member is worn, thereby improving durability.

In addition, the present invention further includes a writing member inside, so that the worker does not need to carry a separate writing instrument to mark the crack depth measurement results, thereby providing convenience to the worker, and the crack depth measurement result at the crack occurrence site. It has the feature of improving safety management efficiency by allowing immediate marking.

In addition, the present invention has the feature of improving its usability by simply fixing the probe pin provided for measuring crack depth as needed.

Although the embodiments of the present invention have been described above, the scope of the rights of the present invention is not limited thereto, and the present invention can be easily modified from the embodiments by those skilled in the art in the technical field to which the present invention belongs and is recognized as equivalent. Includes all changes and modifications to the extent permitted.

110: probe member 111: probe pin
112: Probe coupling part 113: Probe rotating part
120: measuring body 121: scale
122: thread 123: exit hole
124: 1st moving ball 125: 2nd moving ball
130: moving member 131: first moving protrusion
132: second moving protrusion 133: coupling groove
134: Fixing protrusion 140: Pin support spring
150: Cover member 151: Cover body
152: Flange portion 153: Separate coupling hole
154: thread 160: writing member

Claims (4)

In crack depth measuring devices for safety inspection, precise safety diagnosis, and performance evaluation,
A probe member equipped with a probe pin inserted into a crack occurring in the structure;
A cylindrical measuring body with a scale displayed in the longitudinal direction and a screw thread formed on the outer peripheral surface;
A moving member coupled to the probe member and moving within the measuring body to indicate on the scale the length at which the probe pin is inserted into the crack;
a pin support spring that supports the moving member by elastic force within the measuring body so that the probe pin protrudes out of the measuring body;
a writing member coupled with the moving member and accommodated in the measuring body; and
In order to protect the probe pin protruding outside of the measurement body, it includes a cylindrical cover member screwed to the measurement body by threads formed on the inner peripheral surface,
The moving member is
It includes a plurality of moving protrusions that protrude from each of a plurality of moving holes formed to face each other in the longitudinal direction of the measuring body and come into contact with a flange formed at the entrance of the covering member, and the measuring body is screwed with the covering member. When inserted into the cover member, the plurality of moving protrusions move along the plurality of moving holes, thereby protruding the writing member through the protruding hole formed in the measuring body in the opposite direction to the protruding direction of the probe pin. A crack depth measuring device characterized in that: The method of claim 1, wherein the probe member is
Equipped with one of a plurality of probe pins of different shapes and materials,
A crack depth measuring device, characterized in that it is detachably coupled to the moving member. delete The method of claim 1, wherein the cover member is
The measuring body is screwed in the direction of inserting the measuring body in the direction opposite to the protrusion direction of the probe pin, and is coupled to the measuring body to fix the position of the moving member in a state in which the probe pin is maximally protruded. do,
The end of the probe pin that protrudes the most is
A crack depth measuring device characterized in that a force applied from the outside exerts force to remove foreign substances formed inside the crack that interfere with insertion of the probe pin.

Images