KR101160021B1 - dial gauge jig for alignment of impellar housing for air compressor - Google Patents

dial gauge jig for alignment of impellar housing for air compressor Download PDF

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Publication number
KR101160021B1
KR101160021B1 KR1020100119545A KR20100119545A KR101160021B1 KR 101160021 B1 KR101160021 B1 KR 101160021B1 KR 1020100119545 A KR1020100119545 A KR 1020100119545A KR 20100119545 A KR20100119545 A KR 20100119545A KR 101160021 B1 KR101160021 B1 KR 101160021B1
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South Korea
Prior art keywords
dial gauge
mounting
mounting bracket
cylinder body
bolt
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KR1020100119545A
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Korean (ko)
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KR20120057965A (en
Inventor
서정만
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현대제철 주식회사
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Priority to KR1020100119545A priority Critical patent/KR101160021B1/en
Publication of KR20120057965A publication Critical patent/KR20120057965A/en
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Publication of KR101160021B1 publication Critical patent/KR101160021B1/en

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention relates to a dial gauge jig for aligning an impeller housing of an air compressor, comprising a shaft mounting member (10) mounted on a tie bolt (3) fixed to a pinion shaft (1) A measuring arm 40 mounted on the mounting bracket 30 and a mounting bracket 30 mounted on the cylinder body 20 so as to be able to move up and down on the cylinder body 20, And a dial gauge 70 mounted on the end of the mounting bracket 30 so that the mounting bracket 71 abuts the measurement arm 40 vertically.
Accordingly, it is possible to easily grasp the defective alignment state of the impeller housing 2 by observing the measured values of the dial gauge 70 at several positions on the circumference while rotating the jig.

Description

A dial gauge jig for alignment of an impeller housing of an air compressor.

The present invention relates to a jig for mounting a dial gauge, and more particularly, to a dial gauge jig for aligning an impeller housing of an air compressor capable of easily and accurately measuring a clearance between a pinion shaft and an impeller housing in an air compressor.

In steel mills, air cylinders are used as driving devices for various facilities, and direct air is supplied as a combustion and oxidizing source in steel making or steelmaking processes. Compressed air is used for various purposes such as forming air curtains where heat- do.

Air compressors of various capacities are used to form the compressed air.

The present invention can easily measure the gap between the pinion shaft and the impeller housing during the maintenance of the air compressor by using a dial gauge so that the impeller housing can be more easily aligned, A gauge jig is provided for that purpose.

According to an aspect of the present invention,

A shaft mounting member mounted on a tie bolt fixed to a pinion shaft of an air compressor,

A cylinder body mounted on the shaft mounting member so as to be movable back and forth,

A measuring arm rotatably mounted at the center of the cylinder body and having a contact end formed at the front end thereof contacting the inner circumferential surface of the impeller housing of the air compressor;

A mounting bracket vertically movably mounted on the cylinder body,

A dial gauge mounted on the mounting bracket and having a probe portion contacting the rear end of the measuring arm;

.

Further, the shaft mounting member includes a grip portion which is fixed by wrapping the tie bolt,

And a guide plate horizontally formed on the grip portion.

Further, a guide holding portion formed at a lower portion of the cylinder body may be fixed to move back and forth by wrapping the guide plate,

And the front and rear positions of the cylinder body are fixed by the wing bolt fastened through the guide plate.

In addition, a mounting bracket installation space opened downward is formed in the inside of the cylinder body, a slit for communicating the mounting bracket installation space with the outside is formed on the side surface,

The mounting bracket includes a measurement arm mounting portion accommodated in the mounting bracket installation space and moved up and down, and a dial gauge mounting portion connected to the measurement arm mounting portion and protruding to the outside through the slit.

Further, the measuring arm is rotatably mounted on the measuring arm mounting portion of the mounting bracket via a pin,

And the measuring arm mounting portion is provided with a spring for resiliently urging the measuring arm so that the contact end of the measuring arm tip always contacts the impeller housing.

Further, the dial gauge is mounted on the mounting bracket via a connection bracket,

And the connection bracket is adjustable in inclination.

Further, a butterfly bolt is inserted through the upper surface of the cylinder body,

A fixing nut is provided at the lower end of the wing bolt,

A bolt connection space for receiving the fixing nut is formed on an upper surface of the mounting bracket,

And a latching plate is installed in the bolt connecting space so as to prevent the fixing nut from being pulled out.

As described above, according to the present invention,

The dial gauge can be used to confirm the alignment state of the impeller housing with respect to the pinion shaft of the air compressor.

In addition, alignment accuracy of the impeller housing can be accurately measured by confirming the alignment state by always mounting the dial gauge vertically.

Further, since the vertical position and the mounting angle of the dial gauge can be adjusted, it is possible to flexibly cope with the change in use conditions.

In addition, since the operator can work while looking at the dial gauge from the front, the work is easy and fatigue is reduced.

1 is a front view of an installation state of a dial gauge jig according to the present invention,
2 is a longitudinal sectional view of a dial gauge jig according to the present invention,
3 is a front sectional view and a side view of a shaft mounting member, which is a constitution of the present invention,
4 is a front view and a side view of a cylinder body, which is an embodiment of the present invention,
5 is a front view, a plan view, and a side view of a mounting bracket,
6 is a front view and a plan view of a measuring arm,
7 is a front view and a bottom view of a connection bracket constituting one embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1, the dial gauge jig according to the present invention is used by being mounted on a tie bolt 3 screwed and fixed to a mounting groove 1a formed at an end of a pinion shaft 1 of an air compressor.

1 and 2, the dial gauge jig according to the present invention includes a shaft mounting member 10 mounted on the tie bolt 3, and a shaft mounting member 10 mounted on the shaft mounting member 10 to be movable back and forth A measuring arm 40 rotatably mounted at the center of the cylinder body 20 and having a contact end 42 formed at the front end thereof to be brought into contact with the inner circumferential surface of the impeller housing 2 of the air compressor, A mounting bracket 30 mounted on the cylinder body 20 so as to be movable upward and downward and a dial gauge 30 mounted on the mounting bracket 30 and in contact with the rear end of the measuring arm 40, (70).

3, the shaft mounting member 10 includes a circular grasping portion 11 for surrounding the tie bolt 3, and a gripping portion 11 which is provided on the upper surface of the grasping portion 11 in one direction (the pinion shaft 1 ) Direction of the guide plate 12.

The grip portion 11 is divided into two portions and a flange 11a is formed at the lower ends of the divided portions so as to mutually engage with each other so that the tie bolt 3 is inserted into the inner space of the grip portion 11 And then the bolts 61 are inserted into the bolt holes 11b formed in the flange 11a to firmly fix the bolts 61 to the tie bolts 3. [

The guide plate 12 has a rectangular flat plate shape.

4, the cylinder body 20 is formed with guide grip portions 22 in both directions below a rectangular parallelepiped main body 21 having a long length in the up-and-down direction. The guide grip portions 22, And are coupled to each other with a structure in which the guide plate 12 is inserted into the inner space of the guide grip portions 22 of both sides.

The cylinder body 21 is fixed to the shaft mounting member 10 with respect to the vertical direction since both ends of the guide plate 12 are held by the guide holding portion 22. [

However, since there is no structure for restricting the behavior of the guide plate 12 in the longitudinal direction (the left-right direction in the drawing), the cylinder body 20 can be moved back and forth on the guide plate 12.

After the proper position is set by the back and forth movement as described above, the front and rear positions of the cylinder body 20 are fixed by fastening the wing bolt 62 to the bolt hole 22a formed in the side surface of the guide holding portion 22 .

A mounting bracket installation space 21a in which the mounting bracket 30 is accommodated is formed in the main body 21. The mounting bracket installation space 21a is opened at the bottom, And is opened to the outside through a slit 21c formed on the side surface of the main body 21. [

A bolt hole 21b communicating with the mounting bracket installation space 21a is formed on the upper surface of the main body 21.

5, the mounting bracket 30 includes a dial gauge mounting portion 31 having a fork portion 31a formed at an upper end of the mounting bracket 30 so that the dial gauge 70 can be mounted on the dial gauge mounting portion 31, And a measurement arm mounting portion 32 integrally formed on both sides of the dial gauge mounting portion 31 and having gaps between which the measurement arm 40 can be received mutually.

The measurement arm mounting portion 32 is inserted into the mounting bracket installation space 21a of the cylinder body 20 and can be raised and lowered in the vertical direction.

At this time, the dial gauge mounting portion 31 protrudes to the outside of the cylinder body 20 through the slit 21c.

The measurement arm mounting portion 32 is formed with a pinhole 32b for rotatably mounting the measurement arm 40 via a pin 43. The pinhole 32b is provided with a pinhole 32b, A spring 80 for urging the arm 40 in the measuring direction always in the direction in which the contact end 42 formed at the front end of the measuring arm 40 always contacts the inner circumferential surface of the impeller housing 2 A pinhole 32c is formed for mounting the pin 81 for mounting the pin 81. [

A bolt connection space 32a is formed in the upper surface of the mounting bracket 30 in which the lower end of the wing bolt 63 is screwed to the bolt hole 21b on the upper surface of the cylinder body 20.

The bolt connecting space 32a is formed to have an area such that the fixing nut 66 fixed to the lower end of the wing bolt 63 can be received and the latching plate 33 is fixed to the upper end thereof.

That is, the end portion of the wing bolt 63 is inserted into the bolt connecting space 32a through the hole formed in the latching plate 33, and the fixing nut 66 is fixed to the end of the bolt connecting space 32a, The fixing nut 66 can be hooked on the mounting bolt 33 so that the mounting bracket 30 can be moved up and down when the wing bolt 63 is moved up and down.

At this time, the inner wall of the mounting bracket installation space 21a accommodating the measurement arm mounting portion 32 and the slit 21c also serve as guides for guiding the ascending / descending movement path of the mounting bracket 30.

6, a pinhole 41b is formed at an intermediate portion of the measurement arm 40 for mounting the measurement arm mounting portion 32 via a pin 43. The pinhole 41b The both body portions of the arm body 41 are eccentrically vertically formed. That is, the front portion (left side in the drawing) is high and the rear portion (right side in the drawing) is formed in a low shape with the pinhole 41b as the center, the tip end is bent upward at the end portion of the front portion, The formed contact end 42 is formed.

A spring groove 41a is formed in the arm body 41 at one side of the upper portion of the pinhole 41b so that one leg of the spring 80 is inserted.

7 is used as a connection bracket 50 to properly mount the dial gauge 70 in a vertical position at all times despite the size variation of the dial gauge 70. [ As shown in the figure, the front end portion 51 is formed of a single plate and the rear end portion 52 is formed into a fork shape composed of two plates spaced apart from each other by a predetermined distance, and bolt holes 51a and 52a are formed on both sides thereof.

The front end portion 51 is fastened to the fork portion 31a of the dial gauge mounting portion 31 and a bolt 64 is fastened to the rear end portion 52 of the dial gauge mounting portion 31, The end portion 72 is inserted and the bolt 65 is fastened.

The tie angle of the connecting bracket 50 is adjusted so that the dial gauge 70 and precisely the probe 71 can be exactly perpendicular to the horizontal center line of the tie bolt 3, And 65 are securely fastened.

The operation and effect of the present invention will now be described.

In order to properly position the impeller housing 2 when the impeller housing 2 is reassembled after the maintenance and inspection of the air compressor, the alignment state with respect to the pinion shaft 1 is confirmed.

The present invention measures whether the distance from the central axis of the pinion shaft 1 to the inner circumferential surface of the impeller housing 2 is constant over the circumference and judges whether the alignment state of the impeller housing 2 is correct or not Give.

First, the tie bolt 3 is fixed to the mounting groove 1a formed at the end of the pinion shaft 1 by screwing.

Then, the shaft mounting member 10 is mounted on the tie bolt 3. The fixing is achieved by tightening the flange 11a with the bolts 61 as described above.

The front and rear positions of the cylinder body 20 are adjusted so that the contact end portion 42 of the measurement arm 40 can contact the inner circumferential surface of the impeller housing 2. [ This is performed by pushing the cylinder body 20 forward or backward on the guide plate 12 in a state where the butterfly bolt 62 is slightly loosened to adjust the position and tightening the butterfly bolt 62 again.

The upper and lower positions of the measurement arm 40 are adjusted by adjusting the fastening depth of the upper wing bolt 63 of the cylinder body 20 and moving the measurement arm 40 up and down together with the mounting bracket 30.

The contact end 42 of the measuring arm 40 contacts the impeller housing 2 and is pushed downward by a predetermined amount so that the rear end of the measuring arm 40 contacts the probe 71 so as to be pushed upward.

Therefore, when the distance from the center line of the tie bolt 3 to the inner circumferential surface of the impeller housing 2 varies, that is, when the distance from the outer circumferential surface of the pinion shaft 1 to the inner circumferential surface of the impeller housing 2 changes, The degree of depression of the probe 71 is changed so that the pointer of the dial gauge 70 indicates a different value.

That is, the dial gauge 70 is set (adjusted) so that when the impeller housing 2 is installed at the correct position beforehand, the indicator is set to 0 so that the impeller housing 2 If not aligned in the correct position, the pointer will deviate from zero and indicate a value of alignment error.

Therefore, when the operator performs measurement while rotating the jig on the tie bolt 3 (by changing the mounting angle of the shaft mounting member 10 by unscrewing the bolt 61), the impeller housing 2 is accurately It is possible to grasp whether it is disposed at a position or in which direction it is eccentric.

As described above, if the jig according to the present invention is used, the alignment state of the impeller housing 2 with respect to the pinion shaft 1 of the air compressor can be confirmed by using a dial gauge without using a gap gauge or the like.

Further, by checking the alignment state using the dial gauge 70 mounted vertically as described above, the eccentricity (alignment error) can be accurately measured.

The vertical position and the mounting angle of the dial gauge 70 can be adjusted so that the same operation is performed despite the change in the clearance between the pinion shaft 1 and the impeller housing 2 and the change in the size of the mounted dial gauge 70 Can be done without problems.

In addition, since the operator can perform the checking operation of the alignment state while looking at the dial gauge from the front, the work can be easily performed.

1: Pinion shaft 2: Impeller housing
3: Tie bolt 10: Shaft mounting member
11: grip part 12: guide plate
20: Cylinder body 21: Main body
21a: mounting bracket installation space 22: guide grip section
30: Mounting bracket 31: Dial gauge mounting part
32: Measuring arm mounting part 33:
40: measuring arm 41: arm body
42: contact end 50: connection bracket
61, 62, 63, 64, 65: bolt 66:
70: Dial gauge 71: Probe part

Claims (7)

A shaft mounting member mounted on a tie bolt fixed to a pinion shaft of an air compressor,
A cylinder body mounted on the shaft mounting member so as to be movable back and forth,
A measuring arm rotatably mounted at the center of the cylinder body and having a contact end formed at the front end thereof contacting the inner circumferential surface of the impeller housing of the air compressor;
A mounting bracket vertically movably mounted on the cylinder body,
A dial gauge mounted on the mounting bracket and having a probe portion contacting the rear end of the measuring arm;
For adjusting the impeller housing of the air compressor. The method according to claim 1,
Wherein the shaft mounting member includes a grip portion which is fixed by wrapping the tie bolt,
And a guide plate horizontally formed on an upper portion of the grip portion. The dial gauge jig for aligning an impeller housing of an air compressor according to claim 1, The method of claim 2,
A guide holding portion formed at a lower portion of the cylinder body is fixed to move back and forth by wrapping the guide plate,
Wherein the front and rear positions of the cylinder body are fixed by a wing bolt fastened through the guide plate. ≪ Desc / Clms Page number 19 > The method according to claim 1,
Wherein a mounting bracket mounting space opened downward is formed in the inside of the cylinder body, a slit is formed on a side surface of the cylinder body to communicate the mounting bracket mounting space with the outside,
Wherein the mounting bracket includes a measurement arm mounting portion accommodated in the mounting bracket installation space and moved up and down, and a dial gauge mounting portion connected to the measurement arm mounting portion and protruding through the slit to the outside. Dial gauge jig for impeller housing alignment. The method of claim 4,
Wherein the measurement arm is rotatably mounted to the measurement arm mounting portion of the mounting bracket through a pin,
Wherein the measuring arm mounting portion is provided with a spring for resiliently urging the measuring arm so that the contact end of the measuring arm tip always contacts the impeller housing. The method according to claim 1,
The dial gauge is attached to the mounting bracket via a connection bracket,
Wherein the connection bracket is adjustable in inclination. The dial gauge jig for aligning an impeller housing of an air compressor according to claim 1, The method according to claim 1,
A butterfly bolt is inserted through the upper surface of the cylinder body,
A fixing nut is provided at the lower end of the wing bolt,
A bolt connection space for receiving the fixing nut is formed on an upper surface of the mounting bracket,
Wherein the bolt connecting space is provided with a latching plate for preventing the fixing nut from being inserted into the bolt connection space.
KR1020100119545A 2010-11-29 2010-11-29 dial gauge jig for alignment of impellar housing for air compressor KR101160021B1 (en)

Priority Applications (1)

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KR1020100119545A KR101160021B1 (en) 2010-11-29 2010-11-29 dial gauge jig for alignment of impellar housing for air compressor

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Application Number Priority Date Filing Date Title
KR1020100119545A KR101160021B1 (en) 2010-11-29 2010-11-29 dial gauge jig for alignment of impellar housing for air compressor

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KR101160021B1 true KR101160021B1 (en) 2012-06-25

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* Cited by examiner, † Cited by third party
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CN102980470B (en) * 2012-11-20 2016-04-06 无锡麦铁精密机械制造有限公司 Step surface glitch detection cubing in a kind of hole
KR101419201B1 (en) * 2014-02-27 2014-07-11 두산중공업 주식회사 Mounting device for dial gauge
JP7210328B2 (en) * 2019-02-28 2023-01-23 株式会社ミツトヨ Inspection Jig, Gauge Inspection Machine and Gauge Holding Method
CN113074611B (en) * 2021-03-29 2023-08-29 势加透博洁净动力如皋有限公司 Air compressor machine leaf top clearance measurement frock
KR102320145B1 (en) * 2021-04-21 2021-11-02 (주)수산인더스트리 Slide movable type measuring apparatus of axial position

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554747A (en) 1985-02-19 1985-11-26 Williams Robert G Convex radius gauge
JPH06185946A (en) * 1992-09-14 1994-07-08 Ricoh Co Ltd Shape measuring instrument
KR19980035988A (en) * 1996-11-15 1998-08-05 박병재 Dedicated Jig for Spherical Groove Depth Measurement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554747A (en) 1985-02-19 1985-11-26 Williams Robert G Convex radius gauge
JPH06185946A (en) * 1992-09-14 1994-07-08 Ricoh Co Ltd Shape measuring instrument
KR19980035988A (en) * 1996-11-15 1998-08-05 박병재 Dedicated Jig for Spherical Groove Depth Measurement

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