KR101586755B1 - Device for surveying underground facility - Google Patents

Device for surveying underground facility Download PDF

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Publication number
KR101586755B1
KR101586755B1 KR1020150163940A KR20150163940A KR101586755B1 KR 101586755 B1 KR101586755 B1 KR 101586755B1 KR 1020150163940 A KR1020150163940 A KR 1020150163940A KR 20150163940 A KR20150163940 A KR 20150163940A KR 101586755 B1 KR101586755 B1 KR 101586755B1
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South Korea
Prior art keywords
bracket
tape
fixing
tape measure
main body
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KR1020150163940A
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Korean (ko)
Inventor
김동집
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주식회사 대신측량기술
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/02—Means for marking measuring points
    • G01C15/06—Surveyors' staffs; Movable markers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1084—Tapes combined with arrangements for functions other than measuring lengths
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • H05B37/0218—
    • H05B37/0227—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/403—Lighting for industrial, commercial, recreational or military use for machines

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The present invention relates to a device to accurately survey an underground facility. The device to accurately survey an underground facility comprises: a bracket (10); a tape measure (20) which has a measure body (21), a fixing member (22), and a bobbin (23); a meta horizontal support (30) which is arranged on the top of an excavated groove (G); a vertical staff (40) which is inserted into a vertical staff insertion body (11) of the bracket (10); a lubricant supply member (50) which has a nut (52); a support member (60) which is located in the left of the tape measure (20); an ultrasonic sensor (70) which is formed in the right end of a fourth connection part (65) of the support member (60); a lighting device (80) which is formed in the left end of the fourth connection part (65) of the support member (60); an illuminance sensor (90) which is installed on the top surface of the bracket (10); and a control unit (100) which powers the lighting device (80).

Description

정확한 지하시설물 측량을 위한 측량 장치{DEVICE FOR SURVEYING UNDERGROUND FACILITY}{DEVICE FOR SURVEYING UNDERGROUND FACILITY}

본 발명은 정확한 지하시설물 측량을 위한 측량 장치에 관한 것이다.The present invention relates to a surveying device for accurate underground facility surveying.

일반적으로 각종 토목설계나 건축설계 등을 위해서는 우선적으로 측지측량이 이루어져야 한다.Generally, geodetic surveying should be done first for various civil engineering design and architectural design.

측지측량이란 수평거리와 고저차 및 방향을 측정하여 각 측정점들 상호 간의 위치를 결정하여 이를 도면이나 수치로 표시하고, 현장에서 측설하는 제반 활동을 말하는 것이다.Geodetic surveying is the measurement of horizontal distance, elevation difference and direction, determining the location of each measuring point, displaying it in figures or numerical values, and staking out all activities in the field.

근래에는 공간정보 활성의 증대로 인해 데이터의 정확도 및 최신성에 대한 관심이 대두되고 있으며, 특히 최근에는 상하수도 신규 매설 및 노후관 교체시 발생한 DB갱신을 실측을 통하여 데이터의 최신성을 확보하고 있다.In recent years, attention has been paid to the accuracy and the updateability of data due to the increase of spatial information activity. Especially recently, data update has been secured through actual updating of DBs caused by new burial of waterworks and sewage pipes.

여기서, 지하시설물의 실측이라 함은 공사가 완료되기 전 시공시에 육안으로 확인할 수 있는 상태에서 직접측량(심도 측량)하는 것을 말한다.Herein, the actual measurement of underground facilities means direct measurement (depth survey) in a condition that can be visually confirmed at the time of construction before completion of construction.

이와 같은 지하시설물의 실측을 정확히 해야만 지하시설물을 효율적으로 관리할 수 있다.Underground facilities can be efficiently managed only if they are measured accurately.

종래에는 지하시설물을 실측할 시 스타프를 이용한 측량장치를 사용하였다.(대한민국 등록번호 10-1477729 참조)Conventionally, a surveying device using a sight to measure underground facilities was used (refer to Korean Registration No. 10-1477729).

그러나 종래의 측량장치는 지하시설물을 측량할 시 측량장치의 설치가 불편하였으며, 지하시설물의 심도만 측량할 수 있었을 뿐, 주변 구조물(예를 들어 전봇대)과의 거리를 측량할 수 없어, 지하시설물의 측량 데이터를 보다 다양하게 확보할 수 없었다. However, in the conventional measuring apparatus, it is inconvenient to install the measuring apparatus when measuring the underground facilities, and only the depth of the underground facilities can be measured and the distance to the surrounding structures (for example, electric pole) It is not possible to obtain more variety of surveying data.

대한민국 등록특허 10-1477729호Korean Patent No. 10-1477729

본 발명은 상기와 같은 문제를 해결하기 위한 것으로, 편리한 설치가 가능하고, 지하시설물의 심도 및 주변 구조물과의 거리를 정확하게 측량하는 '정확한 지하시설물 측량을 위한 측량 장치'를 제공하는 것을 해결하고자 하는 과제로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide a surveying apparatus for accurately measuring the depth of an underground facility and the distance to a surrounding structure, We will do it.

상기와 같은 과제를 해결하기 위한 본 발명은,According to an aspect of the present invention,

상하방으로 개구된 수직스타프삽입부(11)와, 전후방으로 개구되며 수직스타프삽입부(11)의 후방에 위치하여 수직스타프삽입부(11)와 연통되는 연통부(12)와, 좌우측방으로 개구되며 연통부(12)의 후방에 위치하여 연통부(12)와 연통되는 가로지지대삽입부(13)와, 전방으로 개구되며 가로지지대삽입부(13)의 후방에 위치하여 가로지지대삽입부(13)와 연통되는 볼트헤드수용부(14)와, 전후방으로 개구되고 볼트헤드수용부(14)의 후방에 위치하여 볼트헤드수용부(14)와 연통되며 나사산이 형성된 고정부재체결부(15)를 구비한 브라켓(10)과;A vertically stacked inserting portion 11 opened in the upper and lower chambers, a communicating portion 12 opened in front and rear and communicating with the vertical staff inserting portion 11 located behind the vertical staff inserting portion 11, (13) which is open to left and right chambers and is located behind the communicating part (12) and communicates with the communicating part (12), a front supporting part A bolt head receiving portion 14 communicating with the insertion portion 13 and a fixing member engaging portion 14 which is open to the front and rear and is located behind the bolt head receiving portion 14 and communicates with the bolt head receiving portion 14, A bracket 10 provided with a bracket 15;

전후방으로 관통된 관통부(21a1)가 형성된 본체부(21a), 전후방으로 관통형성된 관통부(21b1)가 형성되며 본체부(21a)의 후방에 구비되어 본체부(21a)를 덮는 커버부(21b)를 구비한 줄자본체(21)와, 내부에 전후방으로 개구된 나사부(22a1)가 형성되고 둘레부에 나사산(22a2)이 형성되며 전단이 브라켓(10)의 고정부재체결부(15)에 삽입체결되는 체결부(22a), 상기 체결부(22a)의 중단 둘레부에 구비되며 줄자본체(21)의 본체부(21a) 내면과 맞대어져 줄자본체(21)의 본체부(21a)를 브라켓(10)에 고정하는 고정부(22b)를 구비한 고정부재(22)와, 눈금테이프(23a)가 설치되며 눈금테이프(23a)가 감기거나 풀리도록 고정부재(22)의 체결부(22a)의 후단에 회전가능하게 설치되는 보빈(23)을 갖춘 줄자(20)와;A cover portion 21b which is provided at the rear of the main body portion 21a and covers the main body portion 21a is formed with a main body portion 21a formed with a penetrating portion 21a1 penetrating in the front and rear direction and a penetrating portion 21b1 penetrating forward and backward, And a threaded portion 22a2 is formed at the periphery of the threaded portion 22a2 and the front end of the threaded portion 22a2 is inserted into the fixing member fastening portion 15 of the bracket 10 The main body portion 21a of the tape measure main body 21 is engaged with the inner surface of the main body portion 21a of the tape measure main body 21, A fixing member 22 provided with a fixing portion 22b for fixing the fixing tape 22a to the fixing tape 22a and fixing the fixing tape 22a to the fixing tape 22a, A tape measure (20) having a bobbin (23) rotatably installed at a rear end thereof;

브라켓(10)의 가로지지대삽입부(13)에 삽입되며, 지하시설물(P1)이 배치된 굴착홈(G)의 상부를 가로지르도록, 굴착홈(G)의 상부에 배치되는 금속 재질의 가로지지대(30)와;The width W of the metal material placed in the upper portion of the excavation groove G is set so as to cross the upper portion of the excavation groove G in which the underground facility P1 is disposed and inserted into the horizontal support post insertion portion 13 of the bracket 10 A support base 30;

브라켓(10)의 수직스타프삽입부(11)에 삽입되고, 가로지지대(30)의 전방에 위치하며, 하단이 지하시설물(P1)에 안착되는 세로스타프(40)와;A vertical stud 40 inserted into the vertical stud insertion portion 11 of the bracket 10 and positioned in front of the horizontal support 30 and having its lower end seated in the underground facility P1;

내부에 전후방으로 개구되게 형성되는 윤활유공급부(51a)를 구비하고, 줄자(20)의 고정부재(22)의 나사부(22a1)에 이동가능하게 삽입체결되며 전단이 브라켓(10)의 고정부재헤드부수용부(14)에 수용되고 후단이 줄자(20)의 커버부(21b)의 관통부(21b1)를 통과하여 후방으로 돌출되는 볼트(51)와, 볼트(51)의 후단에 체결되며 줄자본체(21)의 커버부(21b)의 후면과 맞닿는 너트(52)를 갖춘 윤활유공급부재(50)와;And a lubricant supply portion 51a formed so as to be open in the front and rear direction inside and is movably inserted into the screw portion 22a1 of the fixing member 22 of the tape measure 20, A bolt 51 which is accommodated in the use portion 14 and whose rear end passes through the through portion 21b1 of the cover portion 21b of the tape measure 20 and protrudes rearward, A lubricant supply member 50 having a nut 52 abutting against the rear surface of the cover portion 21b of the cylinder block 21;

브라켓(10)의 상면에 설치되는 지지부(61)와, 상방으로 돌출되며 지지부(61)에 좌우방으로 회전가능하게 설치되는 제1연결부(62)와, 제1연결부(62)의 상단에 설치되며 좌측방으로 돌출되는 제2연결부(63)와, 제2연결부(63)에 설치되며 후방으로 돌출되는 제3연결부(64)와, 제3연결부(64)에 상하방으로 회전가능하게 설치되는 제4연결부(65)를 갖추고서, 줄자(20) 보다 좌측방에 위치하는 지지부재(60)와;A first connecting portion 62 protruding upward and installed to be rotatable in the left and right direction on the support portion 61 and a second connecting portion 62 installed on the upper end of the first connecting portion 62 A third connecting portion 64 installed on the second connecting portion 63 and protruding rearward and a second connecting portion 63 disposed on the third connecting portion 64 so as to be rotatable up and down, A support member 60 having a fourth connection portion 65 and located in the left chamber of the tape measure 20;

지지부재(60)의 제4연결부(65)의 우측단에 구비되는 초음파센서(70)와; An ultrasonic sensor 70 provided at a right end of the fourth connection portion 65 of the support member 60;

지지부재(60)의 제4연결부(65)의 좌측단에 구비되는 조명기구(80)와;A lighting device (80) provided at a left end of the fourth connection part (65) of the support member (60);

브라켓(10)의 상면에 설치되는 조도센서(90)와;An illuminance sensor 90 provided on an upper surface of the bracket 10;

브라켓(10)에 설치되며, 조도센서(90)로부터 주변이 어둡다는 신호를 수신하고, 초음파센서(70)로부터 줄자(20)의 눈금테이프(23a)를 감지했다는 신호를 수신하면 조명기구(80)를 구동하는 제어유닛(100);When receiving a signal indicating that the surroundings are dark from the illuminance sensor 90 and receiving a signal indicating that the scale tape 23a of the tape measure 20 has been sensed from the ultrasonic sensor 70, A control unit (100) for driving the control unit (100);

를 포함하는 것을 특징으로 한다.And a control unit.

본 발명은, 가로지지대(30)를 용이하게 설치할 수 있어 작업이 편리한 이점이 있다.The present invention is advantageous in that the horizontal support stand (30) can be easily installed, and the operation is convenient.

또한, 본 발명은 세로스타프(40)를 안정적으로 설치하여 지하시설물(P1)에 대한 심도를 정확하게 측량할 수 있으며, 심도를 측량함과 함께 줄자(20)를 통해 주변 지상시설물(P2)과 지하시설물(P1) 간의 수평 이격 거리를 정확하게 측량함으로써, 보다 다양한 측량 데이터를 확보할 수 있는 이점이 있다.In addition, the present invention can stably measure the depth of the underground facility P1 by stably installing the turnstiles 40, measure the depth of the underground facility P1, measure the depth of the underground facilities P1 through the tape measure 20, By accurately measuring the horizontal separation distance between the underground facilities P1, it is possible to secure more various surveying data.

또한, 본 발명은 지하시설물(P1)과 지상시설물(P2) 간의 이격 거리를 측량할 시, 주변이 갑자기 어두워지더라도, 줄자(20)의 눈금테이프(23a)의 주변을 신속하게 밝게 함으로써, 작업자가 측량 작업을 편리하게 할 수 있는 이점이 있다.The present invention is also directed to a method of measuring the distance between an underground facility P1 and a ground facility P2 by rapidly brightening the periphery of the scale tape 23a of the tape measure 20 even when the surroundings suddenly become dark, There is an advantage that the surveying operation can be performed conveniently.

그리고, 본 발명은 줄자(20)를 사용함과 동시에 구동된 조명기구(80)를 통해 다양한 위치를 조명할 수 있어, 어두운 환경에서도 측량 작업 또는 측량 작업 이외의 작업을 편리하게 수행할 수 있는 이점이 있다.In addition, the present invention can illuminate various positions through the lighting device 80 driven at the same time as the tape measure 20 is used, so that it is possible to conveniently perform operations other than surveying work or surveying work even in a dark environment have.

도 1은 본 발명의 실시예에 따른 브라켓을 설명하기 위한 사시도이고,
도 2는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 측단면도이고,
도 3은 도 2의 일부를 나타낸 상세도이고,
도 4는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 평면도이고,
도 5는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 배면도이고,
도 6은 본 발명의 실시예에 따른 지지부재, 초음파센서, 조명기구를 설명하기 위한 사시도이고,
도 7 및 도 8은 본 발명의 실시예의 사용을 설명하기 위한 도면이다.1 is a perspective view for explaining a bracket according to an embodiment of the present invention,
2 is a side cross-sectional view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention,
Fig. 3 is a detailed view showing a part of Fig. 2,
FIG. 4 is a plan view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention,
FIG. 5 is a rear view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention,
6 is a perspective view for explaining a support member, an ultrasonic sensor, and a lighting device according to an embodiment of the present invention,
7 and 8 are diagrams for explaining the use of the embodiment of the present invention.

이하, 본 발명에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 첨부도면을 참조하여 상세히 설명한다.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

도 1은 본 발명의 실시예에 따른 브라켓을 설명하기 위한 사시도이고, 도 2는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 측단면도이고, 도 3은 도 2의 일부를 나타낸 상세도이고, 도 4는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 평면도이고, 도 5는 본 발명의 실시예에 따른 지하시설물 정밀 측량 장치를 설명하기 위한 배면도이고, 도 6은 본 발명의 실시예에 따른 지지부재, 초음파센서, 조명기구를 설명하기 위한 사시도로서, 도 1 내지 도 6을 참조하여 본 발명의 실시예의 구조적 특징을 설명하면 다음과 같다.FIG. 1 is a perspective view for explaining a bracket according to an embodiment of the present invention, FIG. 2 is a side sectional view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention, FIG. 3 is a part of FIG. FIG. 4 is a plan view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention, FIG. 5 is a rear view for explaining an underground facility precision measuring apparatus according to an embodiment of the present invention, 6 is a perspective view for explaining a supporting member, an ultrasonic sensor, and a lighting device according to an embodiment of the present invention, and structural characteristics of an embodiment of the present invention will be described with reference to Figs. 1 to 6 as follows.

본 발명의 실시예에 따른 지하시설물 정밀 측량 장치는 브라켓(10)과, 줄자(20)와, 가로지지대(30)와, 세로스타프(40)와, 윤활유공급부재(50)와, 지지부재(60)와, 초음파센서(70)와, 조명기구(80)와, 조도센서(90)와, 제어유닛(100)를 포함하여, 지하시설물(P1; 예를 들어 관로)의 심도 및 지하시설물(P1)과 지상시설물(P2; 예를 들어 전주) 간의 거리를 측량한다.The apparatus for precise measurement of an underground facility according to an embodiment of the present invention includes a bracket 10, a tape measure 20, a transverse support 30, a vertical stud 40, a lubricant supply member 50, The depth and underground facilities of the underground facilities P1 (for example, the canals), including the ultraviolet sensor 60, the ultrasonic sensor 70, the illuminator 80, the illuminance sensor 90 and the control unit 100 (P1) and the ground facility (P2) (for example pole).

브라켓(10)은 상하방으로 개구된 수직스타프삽입부(11)와, 전후방으로 개구되며 수직스타프삽입부(11)의 후방에 위치하여 수직스타프삽입부(11)와 연통되는 연통부(12)와, 좌우측방으로 개구되며 연통부(12)의 후방에 위치하여 연통부(12)와 연통되는 가로지지대삽입부(13)와, 전방으로 개구되며 가로지지대삽입부(13)의 후방에 위치하여 가로지지대삽입부(13)와 연통되는 볼트헤드수용부(14)와, 전후방으로 개구되고 볼트헤드수용부(14)의 후방에 위치하여 볼트헤드수용부(14)와 연통되며 나사산이 형성된 고정부재체결부(15)를 갖춘다.The bracket 10 includes a vertical stud insertion portion 11 which is opened upward and downward and a connecting portion 11 which is opened to the front and rear and which is located behind the vertical stud insertion portion 11 and communicates with the vertical stud insertion portion 11, (13) opened to the right and left in the left and right direction and communicating with the communicating portion (12) by being positioned behind the communicating portion (12) And a bolt head receiving portion 14 communicating with the bolt head receiving portion 14 and communicating with the bolt head receiving portion 14 and communicating with the bolt head receiving portion 14, And a fixed member fastening portion 15 formed thereon.

줄자(20)는 줄자본체(21)와, 고정부재(22)와, 보빈(23)을 갖추고서, 브라켓(10)에 고정된다.The tape measure 20 has a tape measure main body 21, a fixing member 22 and a bobbin 23 and is fixed to the bracket 10.

줄자본체(21)는 전면에 전후방으로 관통형성된 관통부(21a1)가 형성된 본체부(21a)와, 전후방으로 관통형성된 관통부(21b1)가 형성되며 본체부(21a)를 덮는 커버부(21b)를 갖춘다. 이때 커버부(21b)는 본체부(21a)에 착탈가능하게 설치된다.The tape measure main body 21 has a main body portion 21a formed with a penetration portion 21a1 penetrating front and back and a cover portion 21b covering the main body portion 21a with a penetration portion 21b1 penetrating forward and backward, . At this time, the cover portion 21b is detachably attached to the main body portion 21a.

고정부재(22)는 체결부(22a)와, 고정부(22b)를 갖추고서, 줄자본체(21)를 브라켓(10)에 고정한다.The fixing member 22 has a fastening portion 22a and a fixing portion 22b and fixes the tape measure main body 21 to the bracket 10. [

고정부재(22)의 체결부(22a)는 내부에 전후방으로 나사부(22a1)가 형성되고, 둘레부에 나사산(22a2)이 형성되며, 전단이 브라켓(10)의 고정부재체결부(15)에 삽입체결된다.The fastening portion 22a of the fastening member 22 is formed with a threaded portion 22a1 in the front and back direction and a threaded portion 22a2 formed in the periphery thereof. The front end of the threaded portion 22a2 is inserted into the fastening member fastening portion 15 of the bracket 10 .

고정부(22b)는 고정부재(22)의 체결부(22a)의 중단 둘레부에 구비되며, 줄자본체(21)의 본체부(21a) 내면과 맞대어져, 줄자본체(21)의 본체부(21a)를 브라켓(10)에 고정한다.The fixing portion 22b is provided at the peripheral edge of the fastening portion 22a of the fixing member 22 and is brought into contact with the inner surface of the main body portion 21a of the tape measure main body 21, 21a are fixed to the bracket 10.

보빈(23)은 눈금테이프(23a)가 설치되며, 눈금테이프(23a)가 감기거나 풀리도록 고정부재(22)의 체결부(22a)의 후단에 회전가능하게 설치된다. 본 실시예는 보빈(23)에 태엽 스프링이 내장되며, 태엽 스프링은 고정부재(22)에 끼워진다. 이때 태엽 스프링의 일단은 고정부재(22)에 설치되고, 태엽 스프링의 타단은 보빈(23)에 설치된다. 따라서 일단이 보빈(23)에 설치된 눈금테이프(23a)를 외측방으로 당기면 눈금테이프(23a)는 보빈(23)에서 풀리고, 눈금테이프(23a)의 당김을 해제하면 눈금테이프(23a)는 태엽 스프링의 탄성력에 의해 보빈(23)에 감긴다. 한편 본 실시예에서 눈금테이프(23a)가 보빈(23)에서 풀리거나 감기는 기술은 널리 공지된 줄자 구조를 통해 당업자가 용이하게 실시할 수 있다. The bobbin 23 is provided with a graduation tape 23a and is rotatably installed at the rear end of the fastening portion 22a of the fastening member 22 so that the graduation tape 23a is wound or unwound. In this embodiment, the bobbin 23 is provided with a spring-loaded spring, and the spring-loaded spring is fitted into the fixing member 22. At this time, one end of the spring is provided on the fixing member (22), and the other end of the spring is provided on the bobbin (23). Therefore, once the graduation tape 23a provided on the bobbin 23 is pulled outwardly, the graduation tape 23a is unwound from the bobbin 23. When the graduation tape 23a is released, And is wound on the bobbin 23 by the elastic force of the bobbin 23. Meanwhile, in the present embodiment, the technique of releasing or winding the graduation tape 23a on the bobbin 23 can be easily carried out by those skilled in the art through a well-known tape measure structure.

가로지지대(30)는 브라켓(10)의 가로지지대삽입부(13)에 삽입되며, 지하시설물(P1)이 배치된 굴착홈(G)의 상부를 가로지르도록, 굴착홈(G)의 상부에 배치된다. 본 실시예에서 가로지지대(30)는 금속 재질의 사각 파이프 또는 스타프가 적용될 수 있다.The transverse support 30 is inserted into the transverse support insertion portion 13 of the bracket 10 and is installed at the upper portion of the excavation groove G so as to cross the upper portion of the excavation groove G in which the underground facility P1 is disposed . In the present embodiment, the horizontal support 30 may be a square pipe or a metal stud.

세로스타프(40)는 브라켓(10)의 수직스타프삽입부(11)에 삽입되고, 가로지지대(30)의 전방에 위치하며, 하단이 지하시설물(P1)에 안착된다.The vertical stud 40 is inserted into the vertical stud insertion portion 11 of the bracket 10 and positioned in front of the horizontal support 30 and the lower end thereof is seated in the underground facility P1.

윤활유공급부재(50)는 내부에 전후방으로 개구되게 형성되는 윤활유공급부(51a)를 구비하고, 줄자(20)의 고정부재(22)의 나사부(22a1)에 이동가능하게 삽입체결되며 전단이 브라켓(10)의 고정부재헤드부수용부(14)에 수용되고 후단이 줄자(20)의 커버부(21b)의 관통부(21b1)를 통과하여 후방으로 돌출되는 볼트(51)와, 볼트(51)의 후단에 체결되며 줄자본체(21)의 커버부(21b)의 후면과 맞닿는 너트(52)를 갖춘다.The lubricant supply member 50 is provided with a lubricant supply portion 51a which is formed so as to be opened frontward and rearward and is movably inserted into the screw portion 22a1 of the fixing member 22 of the tape measure 20, A bolt 51 which is accommodated in the fixing member head portion 14 of the fixing device 20 of the tape measure 20 and whose rear end passes through the penetration portion 21b1 of the cover portion 21b of the tape measure 20 and protrudes rearward, And a nut 52 which is fastened to the rear end and which abuts the rear surface of the cover portion 21b of the tape measure main body 21.

지지부재(60)는 브라켓(10)의 상면에 설치되는 지지부(61)와, 상방으로 돌출되며 지지부(61)에 좌우방으로 회전가능하게 설치되는 제1연결부(62)와, 제1연결부(62)의 상단에 설치되며 좌측방으로 돌출되는 제2연결부(63)와, 제2연결부(63)에 설치되며 후방으로 돌출되는 제3연결부(64)와, 제3연결부(64)에 상하방으로 회전가능하게 설치되는 제4연결부(65)를 갖추고서, 줄자(20) 보다 좌측방에 위치한다. The support member 60 includes a support portion 61 provided on the upper surface of the bracket 10, a first connection portion 62 protruding upwardly and rotatably installed in the support portion 61, A second connecting portion 63 provided at an upper end of the second connecting portion 63 and protruding to the left side of the first connecting portion 63 and a third connecting portion 64 installed at the second connecting portion 63 and protruding rearward, And a fourth connecting portion 65 which is rotatably installed at the left side of the tape measure 20.

초음파센서(70)는 지지부재(60)의 제4연결부(65)의 우측단에 구비되어, 줄자(20)의 눈금테이프(23a)의 이동 여부를 감지한다.The ultrasonic sensor 70 is provided at the right end of the fourth connection portion 65 of the support member 60 to sense whether the scale tape 23a of the tape measure 20 is moving.

조명기구(80)는 지지부재(60)의 제4연결부(65)의 좌측단에 구비되어, 줄자(20)의 주변을 조명한다. The lighting device 80 is provided at the left end of the fourth connecting portion 65 of the supporting member 60 to illuminate the periphery of the tape measure 20.

조도센서(90)는 브라켓(10)의 상면에 설치되어, 주변 밝기를 감지한다.The illuminance sensor 90 is installed on the upper surface of the bracket 10 to sense ambient brightness.

제어유닛(100)은 브라켓(10)에 설치되며, 조도센서(90)로부터 주변이 어둡다는 신호를 수신하고, 초음파센서(70)로부터 줄자(20)의 눈금테이프(23a)를 감지했다는 신호를 수신하면 조명기구(80)를 구동한다.
The control unit 100 is installed in the bracket 10 and receives a signal indicating that the surroundings are dark from the illuminance sensor 90 and outputs a signal indicating that the scale tape 23a of the tape measure 20 is detected from the ultrasonic sensor 70 And upon receipt, drives the lighting device 80.

도 7 및 도 8은 본 발명의 실시예의 사용을 설명하기 위한 도면으로서, 도 7 및 도 8을 참조하여 본 발명의 실시예에 따른 사용 상태를 설명하면 다음과 같다.FIGS. 7 and 8 are views for explaining the use of the embodiment of the present invention. The use state according to the embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG.

먼저, 브라켓(10)의 가로지지대삽입부(13)에 가로지지대(30)가 삽입되고, 가로지지대(30)는 수평을 이루도록 지면에 얹혀진다. 이때 세로스타프(40)는 브라켓(10)의 수직스타프삽입부(11)에 삽입되고, 세로스타프(40)의 하단이 굴착홈(G)에 배치된 지하시설물(P1)의 상단에 위치한다. First, a horizontal support table 30 is inserted into the horizontal support table insertion portion 13 of the bracket 10, and the horizontal support table 30 is placed on the ground so as to be horizontal. At this time, the vertical stud 40 is inserted into the vertical stud insertion portion 11 of the bracket 10 and the lower end of the vertical stud 40 is inserted into the upper portion of the underground facility P1 disposed in the excavation groove G Located.

이때, 가로지지대(30)가 브라켓(10)의 가로지지대삽입부(13)에 잘 삽입되지 않을 경우, 작업자는 윤활유공급부재(50)의 윤활유공급부(51a)에 윤활유를 공급한다. 그러면 윤활유는 윤활유공급부(51a)를 통과하여 브라켓(10)의 가로지지대삽입부(13)로 배출된다. 따라서 작업자는 가로지지대(30)를 브라켓(10)의 가로지지대삽입부(13)에 용이하게 삽입할 수 있다. 여기서 윤활유공급부재(50)의 볼트(51)는 줄자(20)의 고정부재(22)에 삽탈가능하게 설치되기 때문에, 볼트(51)의 윤활유공급부(51a)가 막힐 경우 유지 보수가 용이하다. 또한 윤활유공급부재(50)는 고정부재(22)에 의해 브라켓(10)에 고정된 줄자(20)를 다시 한번 브라켓(10)에 고정함으로써, 줄자(20)가 보다 안정적으로 브라켓(10)에 고정되도록 한다.At this time, if the horizontal support 30 is not inserted into the horizontal support insertion portion 13 of the bracket 10, the operator supplies the lubricant to the lubricant supply portion 51a of the lubricant supply member 50. Then, the lubricating oil passes through the lubricating oil supply portion 51a and is discharged to the horizontal support insertion portion 13 of the bracket 10. Therefore, the operator can easily insert the transverse support 30 into the transverse support insertion portion 13 of the bracket 10. Here, since the bolt 51 of the lubricant supply member 50 is removably attached to the fixing member 22 of the tape measure 20, maintenance is easy when the lubricant supply portion 51a of the bolt 51 is clogged. The lubricant supply member 50 can secure the tape measure 20 more stably to the bracket 10 by fixing the tape measure 20 fixed to the bracket 10 by the fixing member 22 once more to the bracket 10. [ .

이와 같이 세로스타프(40)가 설치되면, 작업자는 레벨기를 이용하여 지하시설물(P1)의 심도를 측량하고, 도 7과 같이 주변에 기준으로 삼을 수 있는 지상시설물(P2)이 존재할 경우 또 다른 작업자는 줄자(20)의 눈금테이프(23a)를 잡아당겨 지하시설물(P1)로부터 지상시설물(P2) 간의 직선 거리를 측량한다.When the vertical stiffener 40 is installed as described above, the operator measures the depth of the underground facility P1 using the leveler, and when there is a ground facility P2 that can be used as a reference as shown in FIG. 7, Another worker pulls the scale tape 23a of the tape measure 20 to measure the linear distance between the underground facilities P1 and the ground facilities P2.

따라서, 작업자는 세로스타프(40)를 통해 지하시설물(P1)의 심도에 대한 데이터를 확보할 수 있고, 지하시설물(P1)이 주변 지상시설물(P2)로부터 어느 정도 이격되어 있는지에 대한 데이터를 확보할 수 있다. 즉 작업자는 보다 다양한 지하시설물에 대한 측량 데이터를 확보할 수 있다.Accordingly, the operator can acquire data on the depth of the underground facility P1 through the vertical staff 40 and obtain data on how far the underground facility P1 is separated from the surrounding ground facilities P2 . In other words, the operator can obtain survey data for more various underground facilities.

한편, 주변이 갑자기 어두워지면, 제어유닛(100)은 조도센서(90)로부터 주변이 어둡다는 신호를 수신하고, 이때 작업자가 줄자(20)의 눈금테이프(23a)를 잡아당겨 제어유닛(100)이 초음파센서(70)로부터 눈금테이프(23a)를 감지했다는 신호를 수신하면, 제어유닛(100)은 도 8과 같이 조명기구(80)를 구동한다. 그러면 작업자는 갑자기 어두워진 환경에서 눈금테이프(23a)의 눈금을 정확히 읽을 수 있다. On the other hand, when the surroundings suddenly become dark, the control unit 100 receives a signal indicating that the surroundings are dark from the light intensity sensor 90, and at this time, the operator pulls the scale tape 23a of the tape measure 20, Upon receiving a signal indicating that the scribing tape 23a has been sensed by the ultrasonic sensor 70, the control unit 100 drives the lighting device 80 as shown in Fig. Then, the operator can read the scale of the graduation tape 23a accurately in the sudden darkened environment.

이때, 작업자는 지지부재(60)의 제4연결부(65)를 회전시키거나, 지지부재(60)의 제1연결부재(62)를 회전시켜 조명 각도를 조절할 수 있어, 측량 작업을 보다 편리하게 할 수 있다.
At this time, the operator can rotate the fourth connecting portion 65 of the supporting member 60 or rotate the first connecting member 62 of the supporting member 60 to adjust the lighting angle, can do.

상술한 바와 같이 본 발명은, 가로지지대(30)를 용이하게 설치할 수 있어 작업이 편리한 이점이 있다.INDUSTRIAL APPLICABILITY As described above, the present invention is advantageous in that the horizontal support table 30 can be easily installed, and the operation is convenient.

또한, 본 발명은 세로스타프(40)를 안정적으로 설치하여 지하시설물(P1)에 대한 심도를 정확하게 측량할 수 있으며, 심도를 측량함과 함께 줄자(20)를 통해 주변 지상시설물(P2)과 지하시설물(P1) 간의 수평 이격 거리를 정확하게 측량함으로써, 보다 다양한 측량 데이터를 확보할 수 있는 이점이 있다.In addition, the present invention can stably measure the depth of the underground facility P1 by stably installing the turnstiles 40, measure the depth of the underground facility P1, measure the depth of the underground facilities P1 through the tape measure 20, By accurately measuring the horizontal separation distance between the underground facilities P1, it is possible to secure more various surveying data.

또한, 본 발명은 지하시설물(P1)과 지상시설물(P2) 간의 이격 거리를 측량할 시, 주변이 갑자기 어두워지더라도, 줄자(20)의 눈금테이프(23a)의 주변을 신속하게 밝게 함으로써, 작업자가 측량 작업을 편리하게 할 수 있는 이점이 있다.The present invention is also directed to a method of measuring the distance between an underground facility P1 and a ground facility P2 by rapidly brightening the periphery of the scale tape 23a of the tape measure 20 even when the surroundings suddenly become dark, There is an advantage that the surveying operation can be performed conveniently.

그리고, 본 발명은 줄자(20)를 사용함과 동시에 구동된 조명기구(80)를 통해 다양한 위치를 조명할 수 있어, 어두운 환경에서도 측량 작업 또는 측량 작업 이외의 작업을 편리하게 수행할 수 있는 이점이 있다.
In addition, the present invention can illuminate various positions through the lighting device 80 driven at the same time as the tape measure 20 is used, so that it is possible to conveniently perform operations other than surveying work or surveying work even in a dark environment have.

한편, 상기 실시예의 구체적인 예시는 본 발명을 설명하기 위한 것으로, 이에 한정되는 것이 아니고, 특허청구범위와 발명의 상세한 설명의 범위 안에서 여러 가지로 변형하여 실시하는 것이 가능하며, 이 또한 본 발명의 범위에 속하는 것은 당연하다.While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Of course.

10; 브라켓 20; 줄자
30; 가로지지대 40; 세로스타프
50; 윤활유공급부재 60; 지지부재
70; 초음파센서 80; 조명기구
90; 조도센서 100; 제어유닛10; Bracket 20; tape measure
30; A lateral support 40; Vertical Staf
50; A lubricant supply member 60; Supporting member
70; An ultrasonic sensor 80; Lighting equipment
90; An illuminance sensor 100; The control unit

Claims (1)

상하방으로 개구된 수직스타프삽입부(11)와, 전후방으로 개구되며 수직스타프삽입부(11)의 후방에 위치하여 수직스타프삽입부(11)와 연통되는 연통부(12)와, 좌우측방으로 개구되며 연통부(12)의 후방에 위치하여 연통부(12)와 연통되는 가로지지대삽입부(13)와, 전방으로 개구되며 가로지지대삽입부(13)의 후방에 위치하여 가로지지대삽입부(13)와 연통되는 볼트헤드수용부(14)와, 전후방으로 개구되고 볼트헤드수용부(14)의 후방에 위치하여 볼트헤드수용부(14)와 연통되며 나사산이 형성된 고정부재체결부(15)를 구비한 브라켓(10)과;
전후방으로 관통된 관통부(21a1)가 형성된 본체부(21a), 전후방으로 관통형성된 관통부(21b1)가 형성되며 본체부(21a)의 후방에 구비되어 본체부(21a)를 덮는 커버부(21b)를 구비한 줄자본체(21)와, 내부에 전후방으로 개구된 나사부(22a1)가 형성되고 둘레부에 나사산(22a2)이 형성되며 전단이 브라켓(10)의 고정부재체결부(15)에 삽입체결되는 체결부(22a), 상기 체결부(22a)의 중단 둘레부에 구비되며 줄자본체(21)의 본체부(21a) 내면과 맞대어져 줄자본체(21)의 본체부(21a)를 브라켓(10)에 고정하는 고정부(22b)를 구비한 고정부재(22)와, 눈금테이프(23a)가 설치되며 눈금테이프(23a)가 감기거나 풀리도록 고정부재(22)의 체결부(22a)의 후단에 회전가능하게 설치되는 보빈(23)을 갖춘 줄자(20)와;
브라켓(10)의 가로지지대삽입부(13)에 삽입되며, 지하시설물(P1)이 배치된 굴착홈(G)의 상부를 가로지르도록, 굴착홈(G)의 상부에 배치되는 금속 재질의 가로지지대(30)와;
브라켓(10)의 수직스타프삽입부(11)에 삽입되고, 가로지지대(30)의 전방에 위치하며, 하단이 지하시설물(P1)에 안착되는 세로스타프(40)와;
내부에 전후방으로 개구되게 형성되는 윤활유공급부(51a)를 구비하고, 줄자(20)의 고정부재(22)의 나사부(22a1)에 이동가능하게 삽입체결되며 전단이 브라켓(10)의 고정부재헤드부수용부(14)에 수용되고 후단이 줄자(20)의 커버부(21b)의 관통부(21b1)를 통과하여 후방으로 돌출되는 볼트(51)와, 볼트(51)의 후단에 체결되며 줄자본체(21)의 커버부(21b)의 후면과 맞닿는 너트(52)를 갖춘 윤활유공급부재(50)와;
브라켓(10)의 상면에 설치되는 지지부(61)와, 상방으로 돌출되며 지지부(61)에 좌우방으로 회전가능하게 설치되는 제1연결부(62)와, 제1연결부(62)의 상단에 설치되며 좌측방으로 돌출되는 제2연결부(63)와, 제2연결부(63)에 설치되며 후방으로 돌출되는 제3연결부(64)와, 제3연결부(64)에 상하방으로 회전가능하게 설치되는 제4연결부(65)를 갖추고서, 줄자(20) 보다 좌측방에 위치하는 지지부재(60)와;
지지부재(60)의 제4연결부(65)의 우측단에 구비되는 초음파센서(70)와;
지지부재(60)의 제4연결부(65)의 좌측단에 구비되는 조명기구(80)와;
브라켓(10)의 상면에 설치되는 조도센서(90)와;
브라켓(10)에 설치되며, 조도센서(90)로부터 주변이 어둡다는 신호를 수신하고, 초음파센서(70)로부터 줄자(20)의 눈금테이프(23a)를 감지했다는 신호를 수신하면 조명기구(80)를 구동하는 제어유닛(100);
를 포함하는 것을 특징으로 하는 정확한 지하시설물 측량을 위한 측량 장치.A vertically stacked inserting portion 11 opened in the upper and lower chambers, a communicating portion 12 opened in front and rear and communicating with the vertical staff inserting portion 11 located behind the vertical staff inserting portion 11, (13) which is open to left and right chambers and is located behind the communicating part (12) and communicates with the communicating part (12), a front supporting part A bolt head receiving portion 14 communicating with the insertion portion 13 and a fixing member engaging portion 14 which is open to the front and rear and is located behind the bolt head receiving portion 14 and communicates with the bolt head receiving portion 14, A bracket 10 provided with a bracket 15;
A cover portion 21b which is provided at the rear of the main body portion 21a and covers the main body portion 21a is formed with a main body portion 21a formed with a penetrating portion 21a1 penetrating in the front and rear direction and a penetrating portion 21b1 penetrating forward and backward, And a threaded portion 22a2 is formed at the periphery of the threaded portion 22a2 and the front end of the threaded portion 22a2 is inserted into the fixing member fastening portion 15 of the bracket 10 The main body portion 21a of the tape measure main body 21 is engaged with the inner surface of the main body portion 21a of the tape measure main body 21, A fixing member 22 provided with a fixing portion 22b for fixing the fixing tape 22a to the fixing tape 22a and fixing the fixing tape 22a to the fixing tape 22a, A tape measure (20) having a bobbin (23) rotatably installed at a rear end thereof;
The width W of the metal material placed in the upper portion of the excavation groove G is set so as to cross the upper portion of the excavation groove G in which the underground facility P1 is disposed and inserted into the horizontal support post insertion portion 13 of the bracket 10 A support base 30;
A vertical stud 40 inserted into the vertical stud insertion portion 11 of the bracket 10 and positioned in front of the horizontal support 30 and having its lower end seated in the underground facility P1;
And a lubricant supply portion 51a formed so as to be open in the front and rear direction inside and is movably inserted into the screw portion 22a1 of the fixing member 22 of the tape measure 20, A bolt 51 which is accommodated in the use portion 14 and whose rear end passes through the through portion 21b1 of the cover portion 21b of the tape measure 20 and protrudes rearward, A lubricant supply member 50 having a nut 52 abutting against the rear surface of the cover portion 21b of the cylinder block 21;
A first connecting portion 62 protruding upward and installed to be rotatable in the left and right direction on the support portion 61 and a second connecting portion 62 installed on the upper end of the first connecting portion 62 A third connecting portion 64 installed on the second connecting portion 63 and protruding rearward and a second connecting portion 63 disposed on the third connecting portion 64 so as to be rotatable up and down, A support member 60 having a fourth connection portion 65 and located in the left chamber of the tape measure 20;
An ultrasonic sensor 70 provided at a right end of the fourth connection portion 65 of the support member 60;
A lighting device (80) provided at a left end of the fourth connection part (65) of the support member (60);
An illuminance sensor 90 provided on an upper surface of the bracket 10;
When receiving a signal indicating that the surroundings are dark from the illuminance sensor 90 and receiving a signal indicating that the scale tape 23a of the tape measure 20 has been sensed from the ultrasonic sensor 70, A control unit (100) for driving the control unit (100);
And a measuring device for accurately measuring the underground facility.
KR1020150163940A 2015-11-23 2015-11-23 Device for surveying underground facility KR101586755B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101846521B1 (en) 2018-01-24 2018-04-09 주식회사 지오스토리 Staf fasteners for underground facilities
KR101863638B1 (en) * 2017-12-19 2018-06-01 (주)아신테크 Staff device for survey underground pipe in making road register and underground facility map
KR101967712B1 (en) * 2018-11-09 2019-04-10 이상수 Device for surveying underground facility
KR102305284B1 (en) * 2021-06-14 2021-09-27 주식회사 대국지에스 Underground facilities detection system for accurately measuring location of underground facilities
KR102469500B1 (en) * 2022-06-27 2022-11-23 주식회사 이화엔지니어링 Survey staff with improved identification

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Publication number Priority date Publication date Assignee Title
KR101477729B1 (en) 2014-07-16 2014-12-31 (주)그린공간정보 Staff fixing device

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Publication number Priority date Publication date Assignee Title
KR101477729B1 (en) 2014-07-16 2014-12-31 (주)그린공간정보 Staff fixing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101863638B1 (en) * 2017-12-19 2018-06-01 (주)아신테크 Staff device for survey underground pipe in making road register and underground facility map
KR101846521B1 (en) 2018-01-24 2018-04-09 주식회사 지오스토리 Staf fasteners for underground facilities
KR101967712B1 (en) * 2018-11-09 2019-04-10 이상수 Device for surveying underground facility
KR102305284B1 (en) * 2021-06-14 2021-09-27 주식회사 대국지에스 Underground facilities detection system for accurately measuring location of underground facilities
KR102469500B1 (en) * 2022-06-27 2022-11-23 주식회사 이화엔지니어링 Survey staff with improved identification

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