KR101658114B1 - Target Point Displaying Device of Roller Type Schmidt Concrete Test Hammer having a Target Point Displaying Function - Google Patents

Target Point Displaying Device of Roller Type Schmidt Concrete Test Hammer having a Target Point Displaying Function Download PDF

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Publication number
KR101658114B1
KR101658114B1 KR1020160013420A KR20160013420A KR101658114B1 KR 101658114 B1 KR101658114 B1 KR 101658114B1 KR 1020160013420 A KR1020160013420 A KR 1020160013420A KR 20160013420 A KR20160013420 A KR 20160013420A KR 101658114 B1 KR101658114 B1 KR 101658114B1
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South Korea
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ink
inner member
roller
delete delete
striking point
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KR1020160013420A
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Korean (ko)
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이동헌
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(주)중앙종합안전기술연구원
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Priority to KR1020160013420A priority Critical patent/KR101658114B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
    • G01N33/383—Concrete or cement

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The present invention provides an ink jet recording head comprising: an inner member having a bearing body formed on both sides of a roller-shaped body and having a space formed on an outer surface of the body to form an ink reservoir for storing ink; An outer member having an inner space for inserting the inner member into the body and a plurality of through holes passing through the upper and lower portions at positions corresponding to the impact point of the Schmidt hammer at regular intervals in the body; A marking tool member formed on the outer surface of the inner member so as to have a plurality of protrusive pillar to be inserted into a corresponding position of the through hole of the outer member and to mark a plurality of impact points on the concrete surface at regular intervals; And a knob member coupled to the bearing member of the inner member to rotate the roller body having the inner member and the outer member assembled thereto. The hammer striking point marking mechanism has a striking point display function.
In the present invention, a plurality of Schmidt hammer striking point indicating mechanisms are formed in a roller shape and a plurality of storing piston type marking tool members are formed at regular intervals in the body of the rollers, It is possible to maximize the working efficiency of the Schmidt hammer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roller type Schmidt hammer striking point display device having a striking point display function.

The present invention relates to a roller-type Schmidt hammer striking point indicating mechanism having a striking point indicating function. More particularly, the present invention relates to a roller striking type striking point striking point marking mechanism having a roller- The present invention relates to a roller type Schmidt hammer striking point indicating mechanism having a striking point display function for accurately marking a plurality of Schmidt hammer striking points on a concrete surface at regular intervals.

Generally, in order to test the strength of concrete, the compressive strength of concrete is measured by hitting the surface of concrete with a schmid hammer without destroying the structure. At this time, various methods have been proposed for the nondestructive inspection of concrete through the Schmidt hammer, but a repulsive hardness method is one of such methods. The rebound hardness method measures the rebound hardness of the concrete surface, and this rebound hardness method is based on experimental experience that there is a specific correlation between the rebound hardness and the concrete compressive strength when hitting the hardened concrete surface. In addition, the rebound hardness test method using the Schmidt hammer is very simple and internationally standardized and widely used. It is effective in investigating the history of the test room and the reinforced concrete building site among various nondestructive test methods for the compressive strength of concrete, It is known as a widely applicable method. Further, the Schmidt hammer is a spring type hammer, and instead of measuring the fine diameter of the concrete surface, the repulsive force of the spring can be known directly from the scale of the hammer, so that the internal strength of the concrete structure is simply measured.

As shown in FIG. 1, a method for measuring the concrete rebound hardness using the conventional Schmidt hammer as described above includes a first step (S100) of displaying the concrete surface of the object to be measured at regular intervals along the horizontal direction, A second step S101 of drawing four horizontal lines parallel to each interval displayed at predetermined intervals by the first step S100 using a chalk and a ruler; A third step (S102) of drawing five vertical lines at regular intervals along the vertical direction so as to be orthogonal to the horizontal line, and a step of placing the Schmidt hammer at orthogonal points of the horizontal lines and the vertical lines displayed at regular intervals after the third step (S102) And a fourth step (S103) of measuring the strength of the inside of the structure.

In other words, in order to measure the concrete rebound hardness using the Schmidt hammer, a gap of 3 cm is displayed along the lateral direction on the concrete surface of the measurement object. Then, four horizontal lines parallel to the interval of 3 cm shown above are drawn using chalk and ruler. In addition, as described above, the horizontal line is drawn using chalk and ruler, and five vertical lines are drawn at intervals of 3 cm along the vertical direction so as to be orthogonal to the horizontal line at the drawn position. Further, the strength of the inside of the concrete structure is measured by placing the Schmidt hammer at the orthogonal points of the horizontal lines and the vertical lines indicated at regular intervals by the above process.

However, in the conventional method of measuring the concrete rebound hardness using the conventional Schmidt hammer, it is necessary to perform the work of drawing 5 x 4 orthogonal straight lines spaced by 3 cm, for example, every time the strength of the concrete structure is measured, The efficiency of the marking work by the Schmidt hammer is very low. For example, when the concrete structures to be measured have a constant spacing of 5 cm, It is necessary to repeatedly draw the orthogonal straight line, then measure the strength of the concrete by hitting the Schmidt hammer at the intersection, and again draw 5 x 4 orthogonal straight lines at intervals of 3 cm, It took a long time, and there was a problem that accuracy was poor.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of forming a plurality of storage piston type marking tool members at regular intervals in a roller body, The present invention is directed to a roller type Schmidt hammer striking point display mechanism having a striking point display function capable of correctly marking a striking point.

It is a further object of the present invention to provide a method of installing a plurality of spring members, in which a marking tool member containing ink is inserted, with a certain space between an inner member and an outer member of a roller body at regular intervals therebetween, The present invention provides a roller type Schmidt hammer striking point indicating mechanism having a striking point display function which absorbs vibration when the body rotates so that the marking tool member can uniformly mark the striking point continuously.

According to an aspect of the present invention, there is provided an ink jet recording head comprising: an inner member having a bearing body rotatably formed on both sides of a roller-shaped body and having a predetermined space formed on an outer surface of the body,

An outer member having an inner space for inserting the inner member into the body and a plurality of through holes passing through the upper and lower portions at positions corresponding to the impact point of the Schmidt hammer at regular intervals in the body;

A marking tool member formed on the outer surface of the inner member so as to have a plurality of protrusive pillar to be inserted into a corresponding position of the through hole of the outer member and to mark a plurality of impact points on the concrete surface at regular intervals;

And a knob member coupled to the bearing member of the inner member to rotate the roller body having the inner member and the outer member assembled thereto. The hammer striking point marking mechanism has a striking point display function.

According to the present invention, since the Schmidt hammer striking point indicating mechanism is formed in a roller shape and a plurality of storing piston type marking tool members are formed at regular intervals in the roller body, a plurality of Schmidt hammer striking points Is accurately marked at a predetermined interval to easily perform the concrete strength measurement work, and even if the concrete surface is rough or curved, it can be uniformly marked in a roller shape, thereby maximizing the work efficiency of the Schmidt hammer.

In the present invention as described above, a plurality of spring members are provided at predetermined intervals between an inner member and an outer member of a roller body, and a marking tool member containing ink is inserted thereinto, The vibration can be absorbed during rotation, and the marking tool member can uniformly mark the hit points continuously, thereby significantly improving the marking efficiency of the Schmidt hammer on the flat surface and the curved surface.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view for explaining an example of a method for measuring concrete rebound hardness using a conventional Schmidt hammer; FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hammered striking point display device, and more particularly,
3 is an explanatory view for explaining the marking tool member according to the present invention in more detail;
4 is an explanatory view for explaining a state in which a hit point is marked by the marking tool member of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a roller-type Schmidt hammer striking point indicator having a striking point display function according to the present invention will be described with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments of the roller type Schmidt hammer striking point indicating mechanism according to the present invention described here, but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The term " comprises " And / or "comprising" does not exclude the presence or addition of one or more other elements, steps, operations, and / or elements.

Example

FIG. 2 is an explanatory diagram illustrating a roller type Schmidt hammer hitting point display mechanism having a hit point display function according to an embodiment of the present invention, and FIG. 3 is a view for explaining a marking tool member according to the present invention in more detail Fig. 4 is an explanatory diagram for explaining a state in which a hit point is marked by the marking tool member of the present invention.

2 to 3, a roller-type Schmidt hammer striking point indicating mechanism having a striking point display function according to an embodiment of the present invention is characterized in that a bearing member 1 is rotatably formed on both sides of a roller- (3) in which an ink container (2) is formed in which a predetermined space is formed on the outer surface of the body to store ink;

(5a-n) passing through upper and lower portions at positions corresponding to the striking points of the Schmidt hammer at regular intervals in the body, wherein the inner space (3) is inserted into the inside of the body An outer member (6) formed with a plurality of heat dissipation members (6);

A plurality of protrusive columns 7 are formed on the outer surface of the inner member 3 so as to be inserted into the corresponding positions of the through holes 5a-n of the outer member 6 and a plurality of impact points are formed on the concrete surface A marking tool member (8) for marking at regular intervals;

And a knob member 10 coupled to the bearing member 1 of the inner member 3 and rotating the roller body 9 to which the inner member 3 and the outer member 6 are assembled.

A plurality of spring members 11 are provided between the inner member 3 and the outer member 6 to buffer the impact of the inner member 3 and the outer member 6 when the inner member 3 and the outer member 6 rotate. Preferably, a plurality of the spring members 11 are provided between the inner member 3 and the outer member 6 in such a manner that the marking tool member 8 is inserted therein. The spring member 11 engages the lower end engaging portion 12 of the spring member 11 by screw engagement on the upper side of each of the through holes 5a-n of the inner member 3.

The handle member 10 further includes a fixed engaging member 13 engaged with the bearing member 1 to move stably when the roller body 9 rotates together with the bearing member 1. [

3, the marking tool member 8 is filled with a sponge member 14 capable of sucking ink at the lower portion of each of the through holes 5a-n, An ink tube 15 is formed so as to allow ink to flow from the ink container 2 to the sponge member 14 in the inside of the through hole 5a-n, So that the striking hole member 17 is inserted and fixed to take the ink of the sponge member 14 at the striking point.

A plurality of threaded fastening holes 18 are formed on the outer surface of the inner member 3 at corresponding positions of the respective columnar projections 7 formed at regular intervals. 19 are formed. Here, the center of the male screw 19 is empty, so that the ink flows into the ink tube 15 of the projection column 7.

In the outer part of the inner member 3, a lid 16 is formed so that ink can be injected into the ink reservoir 2.

Here, the through-holes 5a-n are formed to have diameters such that the protruded columns 7 are in close contact with the inner diameters of the through-holes 5a-n. Further, under the steady state in which the spring member 11 is not compressed and inserted, the protrusion column 7 is slidably inserted into the through hole 5a-n in the body of the projection column 7, When the spring member 11 is compressed in the downward direction, the protruded column 7 is also formed so as to slide down to about 3/4 of the through holes 5a-n in the downward direction.

In another embodiment of the present invention, the fixed joining member 13 is provided with a laser beam member 20 capable of emitting a laser beam so that distance measurement is possible.

The assembled state of the Schmidt hammer striking point indicating mechanism of the present invention as described above will be described. First, the lower end engaging portion 12 of the spring member 11 is engaged with the upper side of each of the through holes 5a-n of the inner member 3 by screwing. The inner member 3 is inserted into the inner space portion 4 of the outer member 6 in a state where the respective spring members 11 assembled as described above are compressed, 6 so as to be positioned above the respective through holes 5a-n. The upper end of the projection column 7 of the marking tool member 8 is pushed into each of the through holes 5a-n via the center of the spring member 11 and then the male thread formed on the upper end of the projection column 7 And screwed into a screw coupling hole (18) formed at a predetermined interval on the outer surface of the inner member (3). At this time, the center of the male screw 19 is empty, so that the ink flows into the empty space of the ink container 2 and flows into the ink tube 15. Also, since the spring member 11 is also provided with the projecting posts 7 therein, the spring member 11 stably moves. On the other hand, after the projection columns 7 are assembled as described above, the sponge member 14 is filled in the lower end portions of the respective projection columns 7. When the sponge member 14 is filled in the through holes 5a-n as described above, the impact hole members 17 (17a-n) smaller than the radius of the through holes 5a-n are formed at the lowermost end of the through holes 5a- And the assembly of the marking tool member 8 is completed. When the marking tool member 8 of the present invention is assembled as described above, the protruded column 7 is inserted into the through hole 5a-1 when the body of the protruding column 7 is in a normal state in which the spring member 11 is not compressed- n) of the inner side. When the spring member 11 is compressed in the downward direction, the projection pillar 7 slides down to about 3/4 of the through hole 5a-n in the downward direction. Further, the ink container lid 16 of the ink container 2 is opened to inject ink.

When the marking tool member 8 is assembled as described above, the bearing member 1 is coupled to both sides of the inner member 3 and the fixed engagement member of the handle member 10 13 are combined to complete the assembly of the Schmidt hammer of the present invention.

The handle member 10 further includes a fixed engagement member 13 engaged with the bearing member 1 so as to stably move when the roller body 9 rotates together with the bearing member 1. [ In this case, according to another embodiment of the present invention, it is possible to mount a laser beam so that the laser beam member 20 can be measured with the laser beam member 20 coupled to the fixing member 13 of the pull member 10 have. Here, a rotation angle part (not shown), a gravity sensor (not shown), and a body of the laser beam member 20, which measure a distance using a rotation angle, are disposed inside the laser beam member 20, (Not shown) and a microcomputer (not shown) are incorporated to control the angle at which the beam is fired by adjusting the angle of rotation, so that the laser beam is fired at a desired distance, .

Next, the operation and effect of the present invention having the above-described configuration will be described.

First, in order to measure the rebound hardness of the concrete using the roller-type Schmidt hammer striking point indication mechanism of the present invention, the stiffness indicator of the present invention is first placed on the concrete surface of the measurement object using a pull- The force of the force is pulled or pushed as a constant interval of the point is drawn. In the above process, the ink filled in the ink container 2 is moved downward by gravity and filled in the liquid form in the sponge member 14 along the ink tube 15 of the projection column 7. [

That is, on the surface of the outer member 6 of the present invention, a plurality of through holes 5a-n having marking tool members 8 are formed at regular intervals, for example, four horizontally and five vertically Therefore, when the Schmid hammer striking point indicating device of the present invention is pushed against the surface of the concrete, the spring member 11 located on the upper portion of the through hole 5a-n on the side where the roller body rotates is in contact with the surface of the concrete is compressed. At this time, the protruded column 7 of the marking tool member 8 is inserted into the through hole 5a-n by about 1/2 under the normal state in which the spring member 11 is not compressed and inserted, When the spring member 11 is compressed in the downward direction as described above, the projection pillar 7 also slides down to about 3/4 of the through hole 5a-n in a downward direction.

Therefore, when the projection columns 7 of the marking tool member 8 are slid down to about three-fourths of the through holes 5a-n in the downward direction as described above, the lower end of the projection posts 7 is located below The sponge member 14 is strongly compressed. Then, when the sponge member 14 is filled with the ink in the liquid state and then compressed, the sponge member 14 is inserted into the through hole 5a-n at the lowermost end of the through hole 5a-n, So that ink is applied to the impact point of the concrete surface as shown in Fig.

Therefore, when the Schmid hammer striking point indicating mechanism of the present invention performs the marking operation as described above, a striking point having a predetermined number and heat is formed on the surface of the concrete by a clearance distance of the through holes 5a-n having a predetermined interval. For example, if the distance between the through-hole 5a-n and the next through-hole 5a-n is 3 cm, the impact point is displayed at an interval of 3 cm along the lateral direction. As the Schmidt hammer of the present invention rotates, the impact point is repeatedly formed in the longitudinal direction (or the heat). The marking tool member 8 having the Schmid hammer striking point indicating mechanism according to the present invention is rotated and deviates from the concrete surface so that the protruding pillar 7, which is compressed by the spring member 11, Is restored to its original position. In this case, in order to use the laser beam member 20 according to another embodiment of the present invention, a control button (not shown) provided on the body of the laser beam member 20 may be used. When the numerical level is adjusted by adjusting the adjustment button, a laser beam may be emitted from the laser beam member 20 to the front portion of the body as shown in FIG. 2 to adjust the distance. For example, if the user adjusts the adjustment button to set a desired distance, for example, 3 cm or 6 cm, the microcomputer of the laser beam member 20 corrects the current reference center through the gravity sensor, Calculates a rotation angle value, and adjusts the firing angle of the laser beam by the body turning unit to fire the laser beam. Then, the user of the apparatus of the present invention can confirm the position of the beam displayed on the surface of the concrete by the laser beam emitted from both sides of the present invention roller body.

It is possible to mount the laser beam 20 such that the laser beam 20 can be measured such that the distance can be measured by coupling the laser beam member 20 to the fixing member 13 of the pull member 10. [

Therefore, according to the Schmidt hammer striking point indicating mechanism of the present invention as described above, a plurality of Schmidt hammer striking points on the concrete surface can be accurately marked at regular intervals, thereby facilitating the concrete strength measuring operation. In addition, according to the present invention as described above, a plurality of spring members are provided in a form of interposing a marking tool member containing ink between the inner member and the outer member of the roller body, The vibration can be absorbed during rotation of the body for the roller so that the marking tool member can uniformly mark the impact point continuously. Particularly, when the Schmidt hammer striking point indicating mechanism of the present invention is used, since the spring member is formed on the roller body even if the concrete surface is rough or curved, the surface shock can be buffered, have.

1: Bearing member 2:
3: inner member 4; The inner space portion
5a-n: Through hole 6: Outer member
7: projection column 8: marking tool member
9: Roller body 10: Handle member
11: spring member 12: bottom engaging portion
13: fixed engagement member 14: sponge member
15: ink tube 16: ink bottle cap
17: Striking hole member 18: Screw fastening hole
19: male thread 20: laser beam member

Claims (10)

An inner member in which a bearing member is rotatably formed on both sides of a roller-shaped body and a certain space is formed on an outer surface of the roller-shaped body to form an ink container for storing ink;
An outer member having an inner space for inserting the inner member into the body and a plurality of through holes passing through the upper and lower portions at positions corresponding to the impact point of the Schmidt hammer at regular intervals in the body;
A marking tool member formed on the outer surface of the inner member so as to have a plurality of protrusive pillar to be inserted into a corresponding position of the through hole of the outer member and to mark a plurality of impact points on the concrete surface at regular intervals;
A roller-shaped Schmidt hammer striking point indicating mechanism having a striking point display function, the striking point indicating function including a grip member coupled to a bearing member of the inner member and rotating a roller body having an inner member and an outer member assembled,
A plurality of spring members for buffering an impact amount of the inner member and the outer member when the inner member and the outer member are rotated are provided between the inner member and the outer member,
Wherein the plurality of spring members are installed in such a manner that a marking tool member containing ink is inserted thereinto,
Wherein the plurality of spring members are formed by screwing the lower end engaging portions of the spring members to the upper side of the respective through holes of the inner member,
The handle member may further include a fixing member coupled to the bearing member to stably move when the roller body rotates together with the bearing member,
Wherein the marking tool member includes a sponge member provided at a lower portion of each of the through holes and capable of sucking in ink, an ink tube formed in the inside of the projection column so as to allow ink to flow from the ink container to the sponge member, And a striking hole member inserted and fixed to the striking member,
Screw holes are formed on the outer surface of the inner member at corresponding positions of the respective projecting pillar formed at a predetermined interval, a male screw is formed at an upper end of the projecting pillar,
The male screw is formed so that its center is empty so that ink flows into the ink tube of the projection column,
An outer lid of the inner member is formed with an ink lid so that ink can be injected into the ink chamber,
The protruded column is slidably inserted into the through hole in a state where the spring member is not compressed and elongated. When the spring member is compressed in the downward direction, , ≪ / RTI >
Wherein the fixed joint member is provided with a laser beam member capable of emitting a laser beam so that distance measurement is possible. delete delete delete delete delete delete delete delete delete
KR1020160013420A 2016-02-03 2016-02-03 Target Point Displaying Device of Roller Type Schmidt Concrete Test Hammer having a Target Point Displaying Function KR101658114B1 (en)

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KR101744767B1 (en) * 2017-01-06 2017-06-09 정태하 Marking Device for Concrete Ultrasonic test
KR101876545B1 (en) * 2017-12-28 2018-07-09 (주)평화엔지니어링 Repulsive hardness measurement point display device
KR101907992B1 (en) 2018-07-19 2018-10-15 주식회사 태일 Structure Diagnostic Rebound Hardness Safety Position Indicator
KR101933312B1 (en) * 2017-07-20 2019-03-15 이기한 Gravure printing system capable of supplying ink
CN110206328A (en) * 2019-07-01 2019-09-06 中核华辰建筑工程有限公司 It is a kind of quickly equidistantly to take a tool
CN110409853A (en) * 2019-08-30 2019-11-05 中建四局第三建筑工程有限公司 A kind of plate bar spacing actinobacillus device
KR102106377B1 (en) * 2019-10-28 2020-05-04 주식회사 동해종합기술공사 Impact point and work day indicator for measuring concrete rebound hardness
KR102146927B1 (en) * 2020-04-21 2020-08-21 주식회사 중부구조안전기술단 Schmidt hammer strike point indicator for safety inspection and diagnosis and Schmidt hammer type safety inspection method
CN113188927A (en) * 2021-03-25 2021-07-30 河海大学 Impact power model test device and test method for buried pressure pipeline
KR102287735B1 (en) 2021-01-11 2021-08-11 주식회사 동우기술단 Marking member of test positions for non-destructive testing of structure
KR102337466B1 (en) * 2021-06-10 2021-12-13 다윤이엔씨 주식회사 Remote crack indication and measurement device
KR102456329B1 (en) 2022-07-29 2022-10-19 (주)미래원씨앤엠 Roller type schmidt hammer strike point indicator for safety inspection and diagnosis
KR102575837B1 (en) * 2023-03-31 2023-09-07 주식회사 한국시설물안전연구원 Schmidt hammer simple strike point indicator for safety inspection and diagnosis
KR102583966B1 (en) * 2023-02-13 2023-09-27 (주)백산엔지니어링 Dotted point dispaly for concrete rebound hardness test

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KR200340495Y1 (en) * 2003-11-18 2004-02-05 에스큐엔지니어링(주) Marking tool for doting schmidt hammer beating point
KR101229305B1 (en) * 2012-05-03 2013-02-04 (주)세이프테라 Position indicator of schumidt hammer test for safety check-up of construction
KR101358748B1 (en) * 2012-07-20 2014-02-10 (주) 한국시설안전연구원 Automatic hit point mark and vertical ancillary equipment for Schmidt concrete test hammer
KR101410338B1 (en) * 2014-01-13 2014-06-24 영동이앤지(주) Point of concrete structures display

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KR200340495Y1 (en) * 2003-11-18 2004-02-05 에스큐엔지니어링(주) Marking tool for doting schmidt hammer beating point
KR101229305B1 (en) * 2012-05-03 2013-02-04 (주)세이프테라 Position indicator of schumidt hammer test for safety check-up of construction
KR101358748B1 (en) * 2012-07-20 2014-02-10 (주) 한국시설안전연구원 Automatic hit point mark and vertical ancillary equipment for Schmidt concrete test hammer
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Cited By (15)

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KR101744767B1 (en) * 2017-01-06 2017-06-09 정태하 Marking Device for Concrete Ultrasonic test
KR101933312B1 (en) * 2017-07-20 2019-03-15 이기한 Gravure printing system capable of supplying ink
KR101876545B1 (en) * 2017-12-28 2018-07-09 (주)평화엔지니어링 Repulsive hardness measurement point display device
KR101907992B1 (en) 2018-07-19 2018-10-15 주식회사 태일 Structure Diagnostic Rebound Hardness Safety Position Indicator
CN110206328A (en) * 2019-07-01 2019-09-06 中核华辰建筑工程有限公司 It is a kind of quickly equidistantly to take a tool
CN110409853A (en) * 2019-08-30 2019-11-05 中建四局第三建筑工程有限公司 A kind of plate bar spacing actinobacillus device
KR102106377B1 (en) * 2019-10-28 2020-05-04 주식회사 동해종합기술공사 Impact point and work day indicator for measuring concrete rebound hardness
KR102146927B1 (en) * 2020-04-21 2020-08-21 주식회사 중부구조안전기술단 Schmidt hammer strike point indicator for safety inspection and diagnosis and Schmidt hammer type safety inspection method
KR102287735B1 (en) 2021-01-11 2021-08-11 주식회사 동우기술단 Marking member of test positions for non-destructive testing of structure
CN113188927A (en) * 2021-03-25 2021-07-30 河海大学 Impact power model test device and test method for buried pressure pipeline
CN113188927B (en) * 2021-03-25 2022-07-29 河海大学 Buried pressure pipeline impact power model test device and test method
KR102337466B1 (en) * 2021-06-10 2021-12-13 다윤이엔씨 주식회사 Remote crack indication and measurement device
KR102456329B1 (en) 2022-07-29 2022-10-19 (주)미래원씨앤엠 Roller type schmidt hammer strike point indicator for safety inspection and diagnosis
KR102583966B1 (en) * 2023-02-13 2023-09-27 (주)백산엔지니어링 Dotted point dispaly for concrete rebound hardness test
KR102575837B1 (en) * 2023-03-31 2023-09-07 주식회사 한국시설물안전연구원 Schmidt hammer simple strike point indicator for safety inspection and diagnosis

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