KR101556197B1 - Measuring device for center of hole - Google Patents

Measuring device for center of hole Download PDF

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Publication number
KR101556197B1
KR101556197B1 KR1020140070379A KR20140070379A KR101556197B1 KR 101556197 B1 KR101556197 B1 KR 101556197B1 KR 1020140070379 A KR1020140070379 A KR 1020140070379A KR 20140070379 A KR20140070379 A KR 20140070379A KR 101556197 B1 KR101556197 B1 KR 101556197B1
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KR
South Korea
Prior art keywords
hole
link arm
hinged
center
central portion
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Application number
KR1020140070379A
Other languages
Korean (ko)
Inventor
조동균
석진욱
김재형
정민수
조기수
Original Assignee
삼성중공업 주식회사
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Priority to KR1020140070379A priority Critical patent/KR101556197B1/en
Application granted granted Critical
Publication of KR101556197B1 publication Critical patent/KR101556197B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

According to an embodiment of the present invention, a device for measuring a center of a hole is provided. A device for measuring a center of a hole according to an embodiment of the present invention comprises a rod-shaped center part having one end inserted into a hole, and having a target part integrated on the other end; multiple supporting parts radially arranged around the center part, and supporting the inner wall of the hole; and multiple link parts including a first link arm having one side hinged to the center part and having the other side coupled with the supporting parts to be slid, and a second link arm having one side hinged to the supporting parts, having the other side coupled with the center part to be slid, and coupled with the first link arm so the cross point is rotated.

Description

[MEANS FOR SOLVING PROBLEMS] Measuring device for center of hole

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hole centering measuring apparatus, and more particularly, to a hole centering point measuring apparatus capable of easily measuring the center of a hole regardless of the diameter of a bolt hole or a flange hole.

In the shipbuilding industry, we often use bolt holes and flange holes in pipes to match the construction and installation of large blocks. In other words, bolt holes or flange holes formed in the respective large blocks are overlapped with each other, and then fixed with bolts or the like to connect or join the large blocks. In the past, the size of the hole was not so large as less than 30 mm, so that it was not a problem to connect the block even if the center of the hole was not exactly matched. However, as the size of the block becomes larger, the size of the hole becomes larger and it becomes important to find the center of the hole accurately.

On the other hand, a light wave distance meter can be used to find the center of the hole. A light wave distance measuring system is a device that emits a light source toward a target having a reflective prism or a reflector and measures the time difference or phase difference of the reflected wave when the emitted light source is reflected from the target and enters the light wave distance meter again, . These optical distance meters are not only easy to use but also have high reliability of measured values and are widely used in ship drying operations. However, in order to obtain an accurate measurement value using a lightwave distance measurement system, the target to which the reflector is attached must be fixed at a predetermined position. Therefore, a device for fixing the target at the center of the hole is required.

Korean Public Utility Model No. 20-2013-0003908 Issue No. 2013. 07. 01

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hole centering measuring apparatus capable of easily measuring the center of a hole regardless of the diameter of a bolt hole or a flange hole.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for measuring the center of gravity of a hole, comprising: a bar-shaped center portion having one end inserted into a hole and a target portion coupled to the other end; A first link arm having one side hingedly coupled to the center portion and the other side slidably coupled to the support portion; a second link arm having one side hinged to the support portion and the other side sliding to the center portion; And a second link arm rotatably coupled to the first link arm and the intersection point.

And a slip ring coupled to an outer circumferential surface of the center portion and slidable in a longitudinal direction of the center portion, wherein the second link arm can be hinged to the slip ring.

The first link arm may be hingedly coupled radially with respect to the central portion at positions spaced the same distance from the target.

The position where the second link arm is hinged to the support portion and the position where the first link arm is hinged to the center portion may be coplanar with each other.

The support portion is formed with a sliding groove in the longitudinal direction of the center portion, and the first link arm can slide along the sliding groove.

The support portion may include a first end for supporting the inner surface of the hole and a second end located outside the hole and extending outward from the first end.

And a third end extending from the second end toward the hole-formed flange surface to support the flange surface.

According to the present invention, regardless of the diameter of the bolt hole or the flange hole, a target having a reflector or a prism can be positioned at the center of the hole. Therefore, it is possible to easily measure the center of the hole, and the connecting or coupling operation of the large block can be performed efficiently.

FIG. 1 is a perspective view showing a state in which a hole intermediate point measuring apparatus according to an embodiment of the present invention is installed.
FIG. 2 is an enlarged perspective view of the hole centering measuring apparatus of FIG. 1. FIG.
3 is a cross-sectional view of the hole midpoint measurement apparatus of FIG. 2 taken along line AA '.
FIG. 4 and FIG. 5 are operation diagrams for explaining the operation of the hole weighted point measuring apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, with reference to FIG. 1 to FIG. 5, a hole centering measuring apparatus according to an embodiment of the present invention will be described in detail.

FIG. 1 is a perspective view showing a state in which a hole intermediate point measuring apparatus according to an embodiment of the present invention is installed.

The hole center measuring apparatus 1 according to an embodiment of the present invention is a device for measuring the center point of a bolt hole or a flange hole by reflecting a light wave emitted from a light wave transmitter and has a flange surface P on which a hole H is formed, . The hole middle point measuring apparatus 1 can position the target portion T at the midpoint of the hole H irrespective of the diameter of the hole H. [ Therefore, the center of the hole H can be easily measured, and the connecting or coupling operation of the large blocks can be performed efficiently.

Hereinafter, with reference to Fig. 2 and Fig. 3, the hole intermediate point measuring apparatus 1 will be described in detail.

FIG. 2 is an enlarged perspective view of the hole concentrator of FIG. 1, and FIG. 3 is a cross-sectional view of the hole concentrator of FIG. 2 taken along line A-A '.

The hole middle point measuring apparatus 1 according to the present invention comprises a central portion 10, a plurality of supporting portions 20 disposed apart from the central portion 10, a plurality of supporting portions 20 connecting the central portion 10 and the respective supporting portions 20, (30).

The center portion 10 is a bar or rod member having one end inserted into the hole H through the hole H and the target portion T to be described later coupled to the other end. That is, the center portion 10 is located at the center of the hole midpoint measurement apparatus 1 and is always arranged in the vertical direction to the midpoint of the hole H. The central portion 10 is formed in a circular or polygonal cross-sectional shape, and the total length may be longer than the radius of the hole H. The slip ring 11 is coupled to the outer peripheral surface of the central portion 10. The slip ring 11 is a ring-shaped member having a center through which the slip ring 11 is engaged with the outer peripheral surface of the central portion 10 and can slide in the longitudinal direction of the central portion 10. The central portion 10 has a step formed at the lower end thereof to prevent the slip ring 11 from separating from the central portion 10. A plurality of support portions 20 are disposed outside the central portion 10.

The supporting portion 20 is formed by combining a plurality of plate members and is arranged radially around the central portion 10 to support the inner wall of the hole H. [ In other words, a plurality of support portions 20 are radially disposed on the outer side of the central portion 10, and each support portion 20 supports the inner wall of the hole H, H). The supporting portion 20 is supported on a flange surface P having a hole H on one side and disposed on the outside of the hole H while the other side is inserted into the hole H and disposed inside the hole H . Therefore, the hole midpoint measurement apparatus 1 can be held in a state of being supported by the flange surface P without falling through the hole H. [ At this time, the respective supporting portions 20 may be arranged at equal intervals from each other.

Although four support portions 20 are shown on the hole middle point measurement device 1 in the drawing, the number of the support portions 20 may be variously modified. As the number of the support portions 20 increases, the hole midpoint measurement device 1 can be stably supported on the flange surface P. [ Each support 20 includes a first end 21, a second end 22, and a third end 23.

The first end portion 21 is a plate-shaped member having a constant thickness and is arranged in the longitudinal direction to support the inner surface of the hole H. [ That is, the first end portion 21 is inserted into the hole H in a direction perpendicular to the first end portion 21, so that one side faces the inner surface of the hole H. A second end 22 is coupled to one side of the first end 21. The second end 22 is a plate-like member that extends outwardly from the first end 21 and is located outside the hole H. That is, the second end 22 is laterally coupled to the upper surface or side of the first end 21 and is disposed outside the hole H. [ The second end portion 22 disposed transversely to the first end portion 21 disposed in the longitudinal direction is engaged so that the support portion 20 does not completely pass through the hole H but passes through the flange surface P, respectively. A third end 23 is coupled to one side of the second end 22. The third end portion 23 is a plate-shaped member and extends from the second end portion 22 toward the flange surface P to support the flange surface P. [ That is, the third end 23 is longitudinally coupled to the side or bottom surface of the second end 22 and is supported on the flange surface P. Therefore, the entirety of the support portion 20 forms a "7" -shaped structure. The third end portion 23 is engaged with the second end portion 22 so that the support portion 20 can be supported more stably on the flange surface P. [

A sliding groove 20a is formed in the longitudinal direction of the central portion 10 on the outer side of the supporting portion 20 and particularly the first end portion 21. The sliding groove 20a is formed such that the outer surface of the first end portion 21 is inwardly As shown in FIG.

The central portion 10 and the support portion 20 are connected by the link portion 30.

The link portion 30 extends and contracts in the radial direction of the hole H to adjust the distance between the central portion 10 and the support portion 20 and includes the first link arm 31 and the second link arm 32 do.

The first link arm 31 is a bar or rod member having a predetermined length, one side of which is hinged to the central portion 10, and the other side of which is slidably coupled to the support portion 20. One end of the first link arm 31 is radially hinged to the central portion 10 at a position spaced apart from the target portion T by the same distance and the other end portion is engaged with a sliding groove 20a formed in the support portion 20, As shown in Fig. At this time, a sliding bar 24 is accommodated inside the sliding groove 20a. One of the sliding groove 20a and the sliding bar 24 protrudes from one side, So that the sliding bar 24 can move in the vertical direction along the sliding groove 20a. The first link arm 31 is hinged to one side of the sliding bar 24 and moves along the sliding groove 20a together with the sliding bar 24. [

One end of the first link arm 31 hinged to the central portion 10 is rotatable about the hinge axis but is controlled to move in the vertical direction and has a first link arm 31 hinged to the sliding bar 24, Is rotatable about the hinge axis but is movable in the vertical direction.

The second link arm 32 is a bar or rod member having the same length as the first link arm 31. The second link arm 32 is hinged to the support portion 20 at one side and slidably coupled to the center portion 10 at the other side. do. The second link arm 32 is hinged to the support portion 20 at one end on the same plane as the plane formed by the point where the first link arm 31 is hinged to the central portion 10, Is hinged to the slip ring (11) and slides along the central portion (10). In other words, the position where the first link arm 31 is hinged to the central portion 10 and the position where the second link arm 32 is hinged to the support portion 20 are on the same plane with each other. In addition, the sliding bar 24 to which the first link arm 31 is hinged and the slip ring 11 to which the second link arm 32 is hinged are formed in the same plane and slidingly move.

That is, one end of the second link arm 32 hinged to the support portion 20 is rotatable about the hinge axis, and the movement of the second link arm 32 (hinge-coupled to the slip ring 11) ) Is rotatable around the hinge axis, but is movable in the vertical direction.

The second link arm 32 is disposed to intersect with the first link arm 31, but the intersection point is rotatably engaged. When the first link arm 31 and the second link arm 32 are rotated around the intersection point, the link portion 30 extends or contracts in the radial direction of the hole H and the center portion 10 and the support portion 20 can be adjusted. For example, when the first link arm 31 and the second link arm 32 rotate about the intersection point and the sliding bar 24 to which the first link arm 31 is coupled is positioned below the sliding groove 20a And the slip ring 11 to which the second link arm 32 is coupled is located below the central portion 10, the gap between the central portion 10 and the support portion 20 is narrow. Conversely, the sliding bar 24 to which the first link arm 31 is coupled is positioned on the upper side of the sliding groove 20a, and the slip ring 11 to which the second link arm 32 is coupled is positioned above the center portion 10 The gap between the central portion 10 and the support portion 20 is arranged to be wide. The distance between the central portion 10 and the support portion 20 can be adjusted according to the radius of the hole H. [

On the other hand, a target portion T is disposed above the central portion 10.

The target portion T is a plate or rectangular plate member which is rotatably coupled to the upper side of the central portion 10 and is exposed on the upper portion of the hole H. [ At least one of the reflector and the prism may be attached to the center of the target portion T or may reflect the light wave emitted from the light source. In other words, the light wave emitted from the light wave reaches the target portion T, is reflected, and then enters the light wave receiver again. At this time, the time difference or phase difference of the reflected wave is measured to obtain the distance between the light wave and the midpoint of the hole have. Therefore, the hole weighing device 1 is provided in each of the two large-sized block holes H to be connected or coupled with each other, and the distance between the midpoint of the light wave and the hole H is measured. So that the midpoints of the two holes H can be matched. By matching the center points of the two holes (H), two large blocks can be easily connected or combined. Since the target portion T is rotatably coupled to the central portion 10, it is possible to smoothly measure the target portion T by rotating the target portion T according to the position of the light source, the working space, and the like.

Hereinafter, the operation of the hole weighted point measuring apparatus 1 will be described in more detail with reference to Figs. 4 and 5. Fig.

FIGS. 4 and 5 are operation diagrams for explaining an operation procedure of the hole weighted point measuring apparatus according to an embodiment of the present invention.

The hole middle point measuring apparatus 1 according to the present invention can make the target portion T located at the midpoint of the hole H irrespective of the diameter of the hole H. [ Therefore, the center of the hole H can be easily measured, and the connecting or coupling operation of the large blocks can be performed efficiently.

Referring to FIG. 4, when the diameter of the hole H is small, the link portion 30 is contracted to narrow the gap between the central portion 10 and the support portion 20.

The central portion 10 is accommodated in one side of the hole H and the other side of the central portion 10 protrudes outward of the hole H and is disposed in a direction perpendicular to the center of the hole H. [ A target portion T is rotatably coupled to the center portion 10 and at least one of a reflector and a prism is attached to the center of the target portion T so as to reflect the light wave emitted from the light source.

When the diameter of the hole H is small, the first link arm 31 and the second link arm 32 are arranged to be folded while being rotated around the intersection.

One end of the first link arm 31 hinged to the central portion 10 is rotated about the hinge axis and the other end of the first link arm 31 hinged to the sliding bar 24 is rotated about the hinge axis And is disposed on the lower side of the support portion 20 by sliding along the sliding groove 20a. At the same time, one end portion of the second link arm 32 hinged to the support portion 20 is rotated about the hinge axis, and the other end portion of the second link arm 32 hinged to the slip ring 11 is engaged with the hinge shaft And is disposed on the lower side of the central portion 10 by sliding along the outer side surface of the central portion 10. At this time, the sliding bar 24 and the slip ring 11 form the same plane and slidingly move, respectively. The first link arm 31 and the second link arm 32 are arranged so as to be folded to each other so that the support portion 20 is arranged close to the center portion 10 so that the distance between the center portion 10 and the support portion 20 is narrow do.

When the distance between the central portion 10 and the supporting portion 20 is adjusted in accordance with the radius of the hole H, a light wave is emitted to the target portion T to measure the distance between the light wave and the midpoint of the hole H.

Referring to FIG. 5, when the diameter of the hole H is large, the link portion 30 is extended to arrange the gap between the central portion 10 and the support portion 20 widely.

The central portion 10 is disposed perpendicularly to the center of the hole H, and the target portion T is rotatably coupled to the upper portion. At least one of the reflector and the prism is attached to the center of the target portion T to reflect the light wave emitted from the light wave.

When the diameter of the hole H is large, the first link arm 31 and the second link arm 32 are arranged so as to rotate about the intersection and to be spread.

One end of the first link arm 31 hinged to the central portion 10 is rotated about the hinge axis and the other end of the first link arm 31 hinged to the sliding bar 24 is rotated about the hinge axis And is disposed on the upper side of the support portion 20 by sliding along the sliding groove 20a. At the same time, one end portion of the second link arm 32 hinged to the support portion 20 is rotated about the hinge axis, and the other end portion of the second link arm 32 hinged to the slip ring 11 is engaged with the hinge shaft And is disposed on the upper side of the central portion 10 by sliding along the outer side surface of the central portion 10. At this time, the sliding bar 24 and the slip ring 11 form the same plane and slidingly move, respectively. The first link arm 31 and the second link arm 32 are arranged so as to be extended from each other so that the support portion 20 is spaced apart from the central portion 10 so that the distance between the central portion 10 and the support portion 20 is wide do.

When the distance between the central portion 10 and the supporting portion 20 is adjusted in accordance with the radius of the hole H, a light wave is emitted to the target portion T to measure the distance between the light wave and the midpoint of the hole H.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Hall midpoint measuring device 10:
11: slip ring 20:
20a: Sliding groove 21: First end
22: second end portion 23: third end portion
24: sliding bar 30:
31: first link arm 32: second link arm
H: hole P: flange surface
T: Target

Claims (7)

A rod-shaped central portion having one end inserted into the hole and the other end coupled to the target portion;
A plurality of supports disposed radially about the central portion to support the inner walls of the holes; And
A first link arm having one side hinged to the center portion and the other side to be slidably coupled to the support portion; a second link arm having a first side hinged to the support portion and a second side slidably coupled to the center portion, And a plurality of link portions including a second link arm to which an intersection point is rotatably engaged. The apparatus of claim 1, further comprising a slip ring coupled to an outer circumferential surface of the center portion and slidable in a longitudinal direction of the center portion, wherein the second link arm is hinged to the slip ring. 2. The apparatus of claim 1, wherein the first link arms are each hinged radially on the central portion at locations spaced the same distance from the target. The apparatus of claim 3, wherein a position at which the second link arm is hinged to the support portion and a position at which the first link arm is hinged to the center portion are coplanar with each other. The apparatus of claim 1, wherein the support portion is formed with a sliding groove in the longitudinal direction of the center portion, and the first link arm slides along the sliding groove. The apparatus according to claim 1,
A first end for supporting an inner surface of the hole,
And a second end located outside the hole and extending outwardly from the first end. 7. The apparatus of claim 6, further comprising a third end extending from the second end toward the flange surface where the hole is formed to support the flange surface.
KR1020140070379A 2014-06-10 2014-06-10 Measuring device for center of hole KR101556197B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114001677A (en) * 2021-11-05 2022-02-01 中建八局新型建造工程有限公司 Device and method for measuring central shaft deviation of butt-jointed pipelines with different diameters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3687316B2 (en) 1997-11-21 2005-08-24 日立プラント建設株式会社 Centering jig and measuring device using the same
KR101235169B1 (en) 2011-03-02 2013-02-22 주식회사 장평건설 An anchor assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3687316B2 (en) 1997-11-21 2005-08-24 日立プラント建設株式会社 Centering jig and measuring device using the same
KR101235169B1 (en) 2011-03-02 2013-02-22 주식회사 장평건설 An anchor assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114001677A (en) * 2021-11-05 2022-02-01 中建八局新型建造工程有限公司 Device and method for measuring central shaft deviation of butt-jointed pipelines with different diameters
CN114001677B (en) * 2021-11-05 2024-05-10 中建八局新型建造工程有限公司 Central shaft deviation measuring device and measuring method for butt-joint pipelines with different diameters

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