KR102652455B1 - Crack measuring device for safety inspection and diagnosis of structures - Google Patents

Abstract

The present invention relates to a crack measuring device for measuring cracks occurring in a structure during safety inspection and diagnosis of the structure. The crack measuring device for safety inspection and diagnosis of structures according to an embodiment of the present invention includes a crack measuring roller that has a scale formed on the circumferential surface and measures the length of the crack while rolling over the top of the crack, and is inserted into the crack measuring roller. A rotating shaft, a handle connected to a side end of the rotating shaft and held when measuring the crack length by the crack measuring roller, a belt housing fixed to the rotating shaft along the circumference of the rotating shaft, and a belt housing installed inside the belt housing. A crack band that is received in a state and pulled out from the band housing and attached to the crack in a direction perpendicular to the longitudinal direction of the crack to observe the growth of the crack, and an adhesive installed inside the rotating shaft portion to attach the crack band to the crack. Includes. Therefore, cracks in curved surfaces can be easily measured.

Description

Crack measuring device for safety inspection and diagnosis of structures}

The present invention relates to a crack measuring device for measuring cracks occurring in a structure during safety inspection and diagnosis of the structure.

In general, structures undergo safety inspection and diagnosis on a regular or non-stop basis to prevent accidents due to collapse.

Since a structure begins with the occurrence of a crack and then grows as the crack leads to a collapse accident, it is most important to observe whether the crack is growing by measuring the crack during safety inspection and diagnosis.

Cracks are measured in terms of width, depth, length, etc., but since there are limitations in measuring cracks with a general ruler, a crack measuring device is used to measure cracks.

An example of a crack measuring device is disclosed as "Crack measuring device for safety diagnosis of facilities" in Korean Patent Publication No. 10-2091857 (announced on May 26, 2020).

The above-described conventional crack measuring device for safety diagnosis of facilities includes a width measuring table formed long along the left and right transverse directions and displaying a width measurement scale for measuring the width of a crack; A depth measuring table on which a depth measurement scale is displayed for measuring the depth of a crack; A height measuring table formed long along the vertical direction and displaying a height measurement scale for measuring the height of a crack; a height measuring table moving guide formed on the height measuring table, inserted into the crack, and moving along the crack when the height measuring table moves left and right and guiding the height measuring table to rise or fall along the crack for height measurement; It includes a fixture for movably assembling the depth measuring table and the height measuring table to the width measuring table, wherein the width measuring table includes a first rail formed along the left and right lateral directions, and the depth measuring table measures the height. The stand is accommodated to move up and down and forward and backward, and is movably installed on the first rail of the width measuring table to guide width measurement by indicating the width measurement scale, and the height measuring table is supported through the fixture along the vertical and vertical directions. It includes a second rail and is inserted into the depth measuring table to be able to move forward and backward along the depth direction of the crack through an elastic member, thereby informing the height of the crack through the height measurement scale and at the same time moving toward the inside of the crack. It is configured to guide the depth measurement by moving forward and indicating the depth measurement scale when the height measuring table moving guide is supported at the end of the crack.

A crack measuring device for safety diagnosis of a conventional facility with this configuration can check the width, height, and depth of cracks occurring in the facility, and can maintain the facility more safely by quickly checking this information through simple and easy operation. I was able to.

However, conventional crack measuring devices for safety diagnosis of facilities had difficulty accurately measuring the length of cracks using a straight edge on columns with circular cross-sections or curved surfaces.

In addition, the conventional technology only measures cracks, but there is a problem in that it is difficult to determine the growth of cracks in the future. It is difficult to measure crack depth and crack width at the same time, so the measurement location changes when measuring crack depth and crack width, so the exact crack is not measured. There was a problem in measuring the depth and crack width.

The present invention was created to solve the above-mentioned problems. The problem that the present invention aims to solve is to measure the crack length by rotating the crack measuring roller, so that cracks that occur in columns with a circular cross-section or parts of structures formed in curves are detected. The purpose is to provide a crack measuring device for safety inspection and diagnosis of structures that can accurately and easily measure the length of.

In addition, the present invention can not only measure the crack length using a crack measuring roller, but also can measure the crack depth and crack width by installing a depth probe pin and width measurement dial on the handle. The purpose is to provide a crack measurement device for safety inspection and diagnosis of structures that can be measured at the same location at the same time.

In addition, the present invention provides safety inspection and diagnosis of a structure in which the growth of a crack can be easily observed in a form in which an adhesive is accommodated in the rotating shaft, a crack band is accommodated in the strip housing, and the crack band is attached to the crack with an adhesive. The purpose is to provide a crack measuring device for

In addition, the purpose is to provide a crack measuring device for safety inspection and diagnosis of structures that can be used by easily extracting the adhesive from the rotating shaft by configuring the adhesive contained within the rotating shaft to appear and appear as the handle rotates.

A crack measuring device for safety inspection and diagnosis of structures according to an embodiment of the present invention to achieve the above-mentioned tasks includes a crack measuring roller that has a scale formed on the circumferential surface and measures the length of the crack while rolling over the top of the crack, A rotating shaft inserted into the inside of the measuring roller, a handle connected to a side end of the rotating shaft and held when measuring the crack length by the crack measuring roller, a band housing fixed to the rotating shaft along the circumference of the rotating shaft, A crack belt that is received in a closed state inside the belt housing, is pulled out from the belt housing, and is attached to the crack in a direction perpendicular to the longitudinal direction of the crack to observe the growth of the crack, and is installed inside the rotating shaft to detect the crack. Contains an adhesive that attaches the strip to the crack.

The rotating shaft portion accommodates the adhesive and functions as the rotating shaft of the crack measuring roller. The rotating shaft portion is accommodated inside the rotating shaft portion and is installed by inserting an end of the adhesive. The rotating shaft portion slides in the shaft housing to the end of the shaft housing. It has an adhesive holder for releasing the adhesive, and a threaded rod that is screwed through the adhesive holder so that the adhesive holder slides on the shaft housing by screwing and the adhesive appears, and is connected to the b by the handle portion. It may include a rising and falling rotating part to which the handle part is coupled to rotate the saber.

The handle portion includes a probe moving member that is installed to be able to slide along the longitudinal direction of the handle portion, and a depth probe that is installed on the probe moving member and appears in the handle portion according to the sliding movement of the probe moving member and is inserted into the crack. Can contain pins.

The handle may include a width measuring dial at an end of the handle that rotates around the center of the handle and on which scales of different widths for measuring crack widths are formed along the circumferential direction.

According to the present invention, since the crack measuring roller measures the crack length while rolling on the crack surface, the length of the crack occurring in the curved surface of the structure or a pillar such as a cylinder can be easily measured.

In addition, a depth probe pin is installed on the handle to measure the crack depth, and a width measuring dial is installed to measure the crack width. A depth probe pin and a width measurement dial are installed together on the handle to measure the crack depth. By measuring the crack width and crack depth at the same location, accurate crack measurement is possible.

In addition, a band housing to accommodate the crack band is installed on the shaft housing, and adhesive is installed inside the rotating shaft. By applying adhesive to the crack band and installing it on the crack, the growth of the crack is facilitated by observing the deformation of the crack band. It can be observed.

In addition, the adhesive accommodated in the rotating shaft is installed so that it can float out according to the rotation of the handle, so that the adhesive easily floats out, minimizing damage to the adhesive, and the adhesive can easily float out and be used.

Figure 1 is a perspective view showing a crack measuring device for safety inspection and diagnosis of a structure according to an embodiment of the present invention.
Figure 2 is a plan view showing a state in which crack length is measured using a crack measuring device for safety inspection and diagnosis of a structure according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view showing a crack measuring device for safety inspection and diagnosis of a structure according to an embodiment of the present invention, showing a state in which the crack depth is measured.
Figure 4 is a side cross-sectional view showing a crack measuring device for safety inspection and diagnosis of a structure according to an embodiment of the present invention, showing a state in which adhesive is withdrawn from the rotating shaft.
Figure 5 is a perspective view showing a crack measuring device for safety inspection and diagnosis of a structure according to an embodiment of the present invention, showing a state in which a crack band is attached to the crack.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

As shown in FIGS. 1 to 3, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include a crack measuring roller 110.

This crack measuring roller 110 can measure the length of a crack by rolling it along the length of the crack.

The crack measuring roller 110 may be formed in a cylindrical shape with both ends open and an empty interior, and length measurement scales may be formed at regular intervals along the circumference of the outer surface of the crack measuring roller 110.

The crack measuring roller 110 can roll along the crack and measure the crack length through the number of rotations and the number displayed on the measuring scale.

For example, if the circumference of the crack measuring roller 110 is 20cm and 20 scales are formed at 1cm intervals, when measuring the crack length, if it rotates 3 times and is located at the 3rd scale, 3*20+3=63cm It can be measured with

At this time, since the position of the scale facing the bottom of the crack is not easily visible, a scale may be formed radially on the side of the crack measuring roller 110 in the same manner as the length measurement scale, and a reference point that serves as a basis for rotation may be displayed. there is.

As shown in FIGS. 3 and 4, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include a rotating shaft portion 130.

This rotating shaft portion 130 may function as a rotating shaft around which the crack measuring roller 110 rotates.

Meanwhile, the rotating shaft portion 130 not only functions as a rotating shaft, which is the rotation center of the crack measuring roller 110, but also provides an adhesive 135 for attaching the crack band 145, which will be described below, to the crack surface. It is acceptable.

The rotating shaft portion 130 may include a shaft housing 131, an adhesive holder 134, and a rising and falling rotating portion 133.

The shaft housing 131 may be formed in a cylindrical shape with both ends open and the inside penetrated, and is formed to have a diameter that is longer than the length of the crack measurement roller 110 and smaller than the inner diameter of the crack measurement roller 110. It is inserted into the interior of the measuring roller 110 and can perform the function of a rotation axis that becomes the rotation center of the crack measuring roller 110.

At this time, the crack measuring roller 110 installed on the shaft housing 131 can freely rotate around the shaft housing 131 without being resisted by the shaft housing 131, and a crack is formed around one end of the shaft housing 131. The separation prevention flange portion 131a to prevent the measurement roller 110 from being separated in the axial direction of the shaft housing 131 may be formed to have an outer diameter larger than the inner diameter of the crack measurement roller 110.

Meanwhile, the adhesive 135 can be accommodated inside the shaft housing 131, and the adhesive 135 is in a solid form so that the adhesive 135 can be easily applied and attached to the crack band 145. ) can be.

An adhesive holder 134, in which the adhesive 135 is installed, is inserted and installed inside the shaft housing 131, and the adhesive holder 134 is installed inside the shaft housing 131 along the longitudinal direction of the shaft housing 131. By sliding, the adhesive 135 can be released from one end of the shaft housing 131.

Here, the adhesive holder 134 only slides in the longitudinal direction on the shaft housing 131, and a guide protrusion is formed on one of the surfaces facing each other to prevent it from rotating inside the shaft housing 131, and a guide is provided on the other side. A guide groove into which the protrusion is inserted may be formed along the longitudinal direction of the shaft housing 131.

And at the other end of the shaft housing 131, which is opposite to the end from which the adhesive 135 emerges, there is a threaded rod 133a for moving the adhesive holder 134 along the longitudinal direction of the shaft housing 131 by screw fastening. The formed rising and falling rotating part 133 can be installed.

The threaded rod (133a) passes through the center of the adhesive holder (134) and is screwed to the adhesive holder (134) so that the adhesive holder (134) is connected to one end of the shaft housing (131) according to the rotation direction of the screw depth probe pin (123). The adhesive 135 can be released to one end of the shaft housing 131 by moving to or moving to the other end.

The rising and falling rotating part 133 may be installed at the other end of the shaft housing 131 to be rotatable about the center of the shaft housing 131.

On the other hand, the housing cap 136 is detachably coupled to one end of the shaft housing 131 where the adhesive 135 appears, so that the adhesive 135 is exposed to the outside to prevent foreign substances from entering the shaft housing 131. At the same time, it is possible to prevent the adhesive 135 from being completely hardened while in contact with air.

As shown in FIGS. 1 to 4, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include a handle portion 120.

This handle part 120 may be a part that the operator holds in order to measure the crack length with the crack measuring roller 110.

The handle portion 120 is connected to the rotating shaft portion 130 and moves the rotating shaft portion 130 through the handle portion 120. The crack measuring roller 110 installed on the rotating shaft portion 130 is in close contact with the crack surface. As it rolls, the crack length can be measured.

The handle portion 120 may be formed in a bar shape, the handle portion 120 and the rotating shaft portion 130 may be arranged in a straight line, and the handle portion 120 may be positioned at the other end of the shaft housing 131. It is coupled to the rotating part 133 and can rotate the rising and falling rotating part 133.

Inside the handle portion 120, a space is formed in which the probe moving member 122 moves along the longitudinal direction of the handle portion 120, so that the probe moving member 122 can move along the longitudinal direction of the handle portion 120. In addition, a pointer marking hole 121 may be formed through a portion of the side of the probe moving member 122 so that the probe moving member 122 moving in the handle portion 120 is visible from the outside.

In addition, a depth measurement scale that can display the crack depth along the longitudinal direction may be formed in the indicator hole 121.

At this time, the probe moving member 122 may be formed with a pointer protrusion 124 that protrudes out of the handle part 120 through the pointer display hole 121 and indicates the scale.

A depth probe pin 123 may be installed on the probe moving member 122 to probe the crack depth in order to measure the crack depth, and the depth probe pin 123 is located at the rotation axis portion 130 in the handle portion 120. It can appear at the opposite end of the direction.

The depth probe pin 123 may appear at the end of the handle portion 120 as the probe moving member 122 is slidably moved on the handle portion 120.

When measuring the crack depth, when the handle part 120 from which the depth probe pin 123 protrudes is moved while facing the crack surface and the handle part 120 is moved so that the depth probe pin 123 protrudes, the depth probe pin 123 ) is inserted into the crack while protruding, and if the depth probe pin 123 is no longer inserted into the crack, the depth measurement scale indicated by the pointer protrusion 124 of the handle portion 120 at that location is used. The crack depth can be measured.

Additionally, the handle portion 120 may include a width measurement dial 150.

This width measurement dial 150 can measure the width of a crack, and the width measurement dial 150 can be located at the end of the handle portion 120 where the depth probe pin 123 appears.

The width measurement dial 150 is formed in the shape of a donut with a circumference larger than that of the handle portion 120 and can be inserted into the end of the handle portion 120. The width measurement dial 150 is formed in the handle portion 120. ) can freely rotate around.

At this time, the width measurement dial 150 may be formed with protruding dial flanges on both sides of the width measurement dial 150 to prevent it from being separated from the handle portion 120.

The width measurement dial 150 may be formed of a transparent material so that cracks can be seen through the width measurement dial 150. The width measurement dial 150 has width scales displayed at different widths on the width measurement dial 150. ), the crack width can be measured by rotating the width measurement dial 150 on the handle 120 and finding a width scale that matches the crack width.

Here, since the width measurement dial 150 is located at the end of the handle portion 120 where the depth probe pin 123 appears, the width measurement dial 150 is used while measuring the crack depth through the depth probe pin 123. By rotating and measuring the crack width, crack depth and crack width can be measured simultaneously.

In addition, the width measurement dial 150 has a diameter corresponding to the crack measurement roller 110, so that when the crack measurement roller 110 is placed on the crack surface and rolled to measure the crack length, the rotating shaft portion 110 is horizontal with the crack surface. This allows accurate measurement without tilting the crack measuring roller 110.

As shown in FIGS. 4 and 5, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include a band housing 140.

The band housing 140 is formed in the shape of a hollow donut and can be positioned around the rotating shaft 130. The band housing 140 can accommodate the crack band 145, which will be described below.

The band housing 140 may be coupled to the shaft housing 131 of the rotating shaft portion 130, and the band housing 140 may be oriented in a direction opposite to the direction in which the separation prevention flange portion 131a is located in the shaft housing 131. By being positioned, it is possible to prevent the crack measuring roller 110 from being separated from the shaft housing 131.

A strip draw-out hole 141 for drawing out the crack strip 145 accommodated inside may be formed at any point around the belt housing 140, and the strip pull-out hole 141 is formed in the strip housing 140. At the location where the crack strip 145 drawn out through the strip pull-out hole 141 is inserted and organized, a strip ring portion 143 for cutting the crack strip 145 can be formed.

The band housing 140 may be formed to have a circumference smaller than the circumference of the crack measuring roller 110 so as not to contact the crack surface when measuring the crack length by the crack measuring roller 110.

In addition, the band housing 140 prevents the shaft housing 131 from rotating together with the handle portion 120 when the handle portion 120 is rotated to release the adhesive 135 from the shaft housing 131. It can perform the function of a gripping part for gripping.

As shown in FIGS. 4 and 5, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include a crack band 145.

This crack band 145 is attached to the crack and the growth of the crack can be observed.

A plurality of crack bands 145 may be attached along the longitudinal direction of the crack so as to be perpendicular to the longitudinal direction of the crack, and the crack bands 145 are drawn out through the band withdrawal hole 141 of the band housing 140. The crack band 145 can be cut to a desired size through the band ring portion 143 and then attached to the crack using the adhesive 135 contained in the rotating shaft portion 130.

Here, the crack band 145 is attached to the crack after measuring the crack, and the growth of the crack can be observed in the form of detecting damage to the crack band 145.

The crack strip 145 may be paper that can be easily cut due to changes in cracks, or it may be paper with a relatively thin thickness among papers.

The crack band 145 is formed long in the shape of a band and can be accommodated inside the band housing 140 in a state of being wound along the circumference of the shaft housing 131.

As shown in FIGS. 4 and 5, the crack measuring device 100 for safety inspection and diagnosis of a structure according to an embodiment of the present invention may include an adhesive 135.

This adhesive 135 is used to attach the crack strip 145 to the crack surface. The adhesive 135 may be a solid glue that can maintain its shape, or a liquid glue contained in a container.

Here, the type of adhesive 135 may be implemented with various known types of adhesive 135 that can attach the crack strip 145 to the crack surface.

In the embodiment, the adhesive 135 was implemented as a solid paste formed in the shape of a hollow cylinder so that the threaded rod 133a penetrated the center.

Let us explain the actions and effects between the components described above.

The crack measuring device 100 for safety inspection and diagnosis of structures according to an embodiment of the present invention is installed so that a crack measuring roller 110 with a scale formed on the outer surface can rotate on the rotating shaft 130, and the rotating shaft 130 ) A handle portion 120 is installed at the end for gripping when measuring the crack length by the crack measuring roller 110.

The rotating shaft portion 130 is inserted through the shaft housing 131 into the crack measuring roller 110, and an adhesive holder 134 is placed inside the shaft housing 131 to move along the longitudinal direction of the shaft housing 131. is installed, and a stick-shaped fixing adhesive 135 is installed in the adhesive holder 134.

In addition, a rising and falling rotating part 133 is installed at the end of the shaft housing 131 where the handle part 120 is located so as to be rotatable in the shaft housing 131, and a rising and falling rotating part 133 is installed in the center of the rising and falling rotating part 133. A rotating threaded rod (133a) is installed.

The threaded rod 133a penetrates the adhesive holder 134 and is screwed to the adhesive holder 134, so that the threaded rod 133a rotates according to the rotation of the rising and falling rotating part 133, and changes the rotation direction of the rising and falling rotating part 133. Accordingly, the adhesive holder 134 moves to one side of the shaft housing 131 or moves to the other side by screw fastening, and the adhesive 135 appears at the end of the shaft housing 131.

In addition, a separation prevention flange portion (131a) is formed around one end of the shaft housing (131) to prevent the crack measuring roller (110) from separating, and at the other end of the shaft housing (131), a band that accommodates the crack band (145) is formed. The housing 140 is fixedly installed so that the crack measuring roller 110 is prevented from being separated from the shaft housing 131 by the separation prevention flange portion 131a and the band housing 140.

The shaft housing 131 can be fixed to the end of the shaft housing 131 in the form of a donut where the handle portion 120 is located, and the shaft housing 131 has an interior to accommodate the crack band 145. It may be empty.

A crack band (145) is installed on the shaft housing (131) in a way that it winds around the circumference of the shaft housing (131), and a belt pullout where the crack band (145) wound around the shaft housing (131) is pulled out. The hole 141 is formed through the crack, and the crack strip 145 is positioned in close contact with the strip housing 140 at the front of the direction in which the crack strip 145 is drawn out from the area where the strip draw-out hole 141 is formed. While arranging the strip 145, a strip ring portion 143 is formed for cutting the crack strip 145.

The handle portion 120 may be coupled to the rising and retracting rotating portion 133 on the rotating shaft portion 130, and the handle portion 120 is held when measuring the crack length by the crack measuring roller 110 and at the same time, the rising and retracting rotating portion ( 133) can be rotated.

A depth probe pin 123 appears at the end of the handle portion 120 in the opposite direction to the end coupled to the rotation shaft portion 130, and the depth probe pin 123 is connected to the rotation shaft portion 130 from the handle portion 120. ) is slid along the axial direction by the probe moving member 122 and emerges from the handle portion 120.

In addition, in the handle portion 120, an indicator hole 121 through which the state of the probe moving member 122 can be viewed from the outside may be formed along the longitudinal direction of the handle portion 120, and an indicator hole 121 ) A depth measurement scale is formed around the perimeter to indicate the crack depth.

The probe moving member 122 may be formed to have a protruding pointer protrusion 124 that is exposed to the outside of the handle part 120 through the pointer display hole 121 and indicates the depth measurement scale.

In addition, a width measurement dial 150 with a plurality of width scales having different widths radially formed around the end of the handle portion 120 where the depth probe pin 123 emerges is provided to measure the crack width. ) is installed so that it can rotate around.

The crack measuring device 100 for safety inspection and diagnosis of structures according to an embodiment of the present invention configured in this way is used to measure the crack length by using the handle portion 120 with the crack measuring roller 110 in contact with the crack surface. The crack length is measured through a scale formed around the crack measurement roller 110 by rolling the crack measurement roller 110 along the crack while holding the crack.

Here, since the crack measuring roller 110 measures the crack length while rolling on the crack surface, not only cracks that occur on a plane but also cracks that occur around the circular column of a building can easily be measured through the crack measuring roller 110. It can be measured easily.

In addition, when measuring the crack depth, the probe moving member 122 is installed so that the depth probe pin 123 protrudes from the handle 120 through the pointer protrusion 124 while the end of the handle 120 is seated on the crack surface. ) is moved downward in the handle portion 120.

When the probe moving member 122 is lowered, the depth probe pin 123 protrudes from the handle portion 120 and is inserted into the crack, and when the probe moving member 122 is no longer lowered, the depth probe pin ( It is determined that the end of 123) has reached the bottom of the crack, and the crack depth is measured through the depth measurement scale indicated by the current guide protrusion 124.

At the same time, in the state of measuring the crack depth, the width measurement dial 150 is rotated around the handle portion 120 so that the width scale of the width measurement dial 150 corresponding to the width of the crack measuring the current crack depth matches. Measure the crack width by finding the width scale that matches the crack width.

Meanwhile, when the crack measurement is completed, the crack strip 145 accommodated in the strip housing 140 is pulled out at a location where crack growth is likely to occur, cut through the strip ring portion 143, and then cracked using the adhesive 135. To attach the strip 145, the adhesive 135 is protruded from the shaft housing 131.

At this time, when the adhesive 135 is protruded from the shaft housing 131, the housing cap 136 is separated from the shaft housing 131, and the band housing 140 is held to prevent the shaft housing 131 from rotating. Rotate the handle portion 120.

When the handle portion 120 rotates, the rising and falling rotating portion 133 coupled to the handle portion 120 rotates, and the threaded rod 133a rotates, and the adhesive holder 134 is formed by the rotating threaded rod 133a. The adhesive 135 protrudes from the shaft housing 131 while moving toward one end of the shaft housing 131 by screwing.

When the adhesive 135 protrudes, the growth of the crack can be observed by applying the adhesive 135 to the crack band 145 and attaching a plurality of crack bands 145 in a direction perpendicular to the crack.

On the other hand, after attaching the crack band 145 to the crack, the handle portion 120 is glued while holding the band housing 140 in order to insert the protruding adhesive 135 into the inside of the shaft housing 131. When rotating in the opposite direction to the direction in which it was rotated to protrude 135, the protruding and retracting rotating part 133 rotates and the adhesive holder 134 moves to the other side of the shaft housing 131 by the threaded rod 133a, and the shaft housing 131 ) is inserted into the adhesive 135, and when the adhesive 135 is inserted, the open portion of the shaft housing 131 is sealed with the housing cap 136 to prevent foreign substances from entering the interior of the shaft housing 131. block it

Therefore, the crack measuring device 100 for safety inspection and diagnosis of structures according to an embodiment of the present invention measures the crack length by rolling the crack measurement roller 110, so that the crack length that occurs in the curved portion of the structure is measured. can be easily measured.

In addition, a depth probe pin 123 is installed on the crack handle to measure the crack depth, and a width measurement dial 150 that rotates to measure the crack width is installed on the crack handle to easily measure crack depth and crack width. Not only that, but also the crack width can be measured simultaneously at the location where the crack depth is measured.

In addition, the crack band 145 is accommodated inside the band housing 140, and the rotating shaft portion 130 is provided with an adhesive 135, so that the growth of the crack can be easily observed by attaching the crack band 145 to the crack. there is.

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 embodiments of the present invention can be easily modified by those skilled in the art in the technical field to which the present invention belongs and are recognized as equivalent. Includes all changes and modifications to the extent permitted.

100: Crack measuring device 110: Crack measuring roller
120: Handle 121: Instruction hole
122: Probe moving member 123: Depth probe pin
124: Guide protrusion 130: Rotating shaft portion
131: axial housing 131a: breakaway prevention flange
133: Emerging and retracting rotating part 133a: Threaded rod
134: Adhesive holder 135: Adhesive
136: housing cap 140: band housing
141: Belt pull-out hole 143: Belt ring part
145: Crack band 150: Width measurement dial

Claims (4)

A crack measuring roller with a scale formed on the circumferential surface to measure the length of the crack by rolling over the top of the crack,
A rotating shaft portion inserted into the crack measuring roller,
A handle connected to the side end of the rotating shaft and held when measuring the crack length by the crack measuring roller,
A band housing fixed to the rotating shaft along the circumference of the rotating shaft,
A crack strip that is received in a closed state inside the strip housing, is pulled out from the strip housing, and is attached to the crack in a direction perpendicular to the longitudinal direction of the crack to observe the growth of the crack, and
It includes an adhesive installed inside the rotating shaft to attach the crack band to the crack,
The rotating shaft part
A shaft housing that accommodates the adhesive and functions as a rotation axis of the crack measuring roller,
An adhesive holder that is accommodated inside the rotating shaft, is installed with an end of the adhesive inserted, and slides in the shaft housing to release the adhesive to the end of the shaft housing, and
The adhesive holder has a threaded rod that passes through the adhesive holder so that the adhesive holder slides in the shaft housing by screwing and the adhesive emerges, and the handle portion is coupled to rotate the screw rod by the handle portion. A crack measuring device for safety inspection and diagnosis of structures, characterized by including a rising and falling rotating part. delete According to paragraph 1,
The handle part
A probe moving member installed to slide along the longitudinal direction of the handle, and
A crack measuring device for safety inspection and diagnosis of a structure, comprising a depth probe pin installed on the probe moving member, emerging from the handle portion according to the sliding movement of the probe moving member, and inserted into the crack. According to paragraph 1,
The handle part
Crack measurement for safety inspection and diagnosis of the structure, characterized in that it includes a width measuring dial that rotates about the center of the handle at the end of the handle and has scales of different widths formed along the circumferential direction for measuring crack widths. Device.

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