CN109612418A - A kind of measuring mechanism applied to connection flange - Google Patents
A kind of measuring mechanism applied to connection flange Download PDFInfo
- Publication number
- CN109612418A CN109612418A CN201811560704.9A CN201811560704A CN109612418A CN 109612418 A CN109612418 A CN 109612418A CN 201811560704 A CN201811560704 A CN 201811560704A CN 109612418 A CN109612418 A CN 109612418A
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- China
- Prior art keywords
- support
- connection flange
- shafting
- outer circle
- supporting element
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Classifications
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of measuring mechanism applied to connection flange, the first end of first support is vertical with the supporting element to be connect；The supporting element is connect by locking member with the first shafting connection flange, the second shafting connection flange is equipped with below the second end of the first support, first secondary support parallel with the supporting element is provided in the first support, first secondary support is arranged on the inside of the close second end of the first support, the first outer circle drift meter is arranged in the first support, and the first plane complications measuring instrument is arranged on first secondary support.Measuring mechanism provided by the invention applied to connection flange, in the case where can be in axial span > 200mm abutted flange pair, it remains to for the instrument of the offset of abutted flange outer circle, Plane Curved broken number evidence fixedlying positioning and be mounted on shafting abutted flange, realize the fixed installation of centering DATA REASONING instrument and the technical effect for stablizing reading of data.
Description
Technical field
The present invention relates to shipbuilding technical field more particularly to a kind of measuring mechanisms applied to connection flange.
Background technique
Centering levelling is the primary condition before the connection installation of Ship Propeling shafting of main engine.By measuring shafting of main engine rendezvous method
Blue relative position deviation (flange excircle offset, Plane Curved broken number evidence) simultaneously aligns shafting of main engine until reaching centering by measurement data
It is required that being the common form of marine shafting centering.
In the prior art, when being aligned in marine shafting pair, in order to which the offset of abutted flange outer circle, Plane Curved broken number will be measured
According to instrument fixedly positioning and be mounted on shafting abutted flange, magnetic force dial framework fixation measuring instrument generally can be used, but in axial direction
Magnetic force dial framework in the case where span > 200mm abutted flange centering is not because fixed link brachium is available not enough.For this purpose, being badly in need of
It is a kind of to fixedly positioning the measuring mechanism being mounted in shafting connection flange.
Summary of the invention
The present invention provides a kind of measuring mechanisms applied to connection flange, can be in axial span > 200mm rendezvous method
It in the case where blue centering, remains to deviate abutted flange outer circle, the instrument of Plane Curved broken number evidence fixedly positioning and is mounted on shafting pair
On acting flange, the fixed installation of centering DATA REASONING instrument and the technical effect for stablizing reading of data are realized.
The embodiment of the invention provides a kind of measuring mechanisms applied to connection flange, including first support, supporting element,
One outer circle drift meter and the first plane complications measuring instrument, wherein the first end of the first support and the supporting element hang down
It is direct-connected to connect, and the top of the supporting element is set；The supporting element is connect by locking member with the first shafting connection flange, institute
It states and is equipped with the second shafting connection flange below the second end of first support, be provided in the first support and the supporting element
The first parallel secondary support, first secondary support are arranged on the inside of the close second end of the first support, institute
It states the first outer circle drift meter to be arranged in the first support, and the first outer circle drift meter setting is described the
Between two ends and first secondary support, the first plane complications measuring instrument is arranged on first secondary support, and described
First outer circle drift meter and the first plane complications measuring instrument are contacted with the second shafting connection flange；
Wherein, after the first shafting connection flange and the second shafting connection flange are rotated by 360 °, pass through institute
State the first outer circle drift meter measure it is outer between the first shafting connection flange and the second shafting connection flange
Circle offset；The first shafting connection flange and second shafting connection are measured by the first plane complications measuring instrument
Tortuosity ratio between acting flange；According to the outer circle offset and the tortuosity ratio, obtain the first shafting connection flange and
Centering rate between the second shafting connection flange.
Optionally, it is provided with first through hole in the first support, by the first compressing member and the first through hole by institute
The first outer circle drift meter is stated to be fixed in the first support.
Optionally, it is provided with the second through-hole on first secondary support, it will by the second compressing member and second through-hole
The first plane complications measuring instrument is fixed on first secondary support.
Optionally, further includes:
Second support, the first end of the second support is vertical with the supporting element to be connect, and is arranged in the supporting element
Lower part, the second shafting connection flange is arranged in visiting a grave for the second end of the second support
Second secondary support is arranged in the second support, and parallel with the supporting element, the second secondary support setting
On the inside close to the second end of the second support；
Second outer circle drift meter is arranged in the second support, and is arranged in the second end and described first
Between secondary support；
Second plane complications measuring instrument, be arranged on second secondary support, and the second outer circle drift meter and
The second plane complications measuring instrument is contacted with the second shafting connection flange.
Optionally, it is provided with third through-hole in the second support, by third compressing member and the third through-hole by institute
The second outer circle drift meter is stated to be fixed in the second support.
Optionally, it is provided with fourth hole on second secondary support, it will by the 4th compressing member and the fourth hole
The second plane complications measuring instrument is fixed on second secondary support.
Optionally, the supporting element is specially channel steel.
Optionally, further includes:
Washer is arranged between the locking member and the supporting element.
Optionally, the clamp ring includes nuts and bolt.
By one embodiment or multiple embodiments, the invention has the advantages that advantage:
Due to the measuring mechanism applied to connection flange in the embodiment of the present application, in the first shafting connection flange and
After the second shafting connection flange is rotated by 360 °, measured by the first outer circle drift meter being arranged in first support
Outer circle offset between first shafting connection flange and the second shafting connection flange out；By being arranged on the first secondary support
First plane complications measuring instrument measures the complications between the first shafting connection flange and the second shafting connection flange
Rate；According to the outer circle offset and the tortuosity ratio, the first shafting connection flange and second shafting connection are obtained
Centering rate between flange is connect since the first support is vertical with the supporting element；The supporting element by locking member with
The second shafting connection flange is arranged in the lower section of the connection of first shafting connection flange, the second end of the first support；In this way, making
The first support obtains the support of the supporting element, so as to freely adjust the length of the first support, so that described
The length of first support is unrestricted, in the case where so, it is possible in axial span > 200mm abutted flange pair, remain to by
Abutted flange outer circle deviates, the measuring instrument of Plane Curved broken number evidence fixedly positioning and is mounted on shafting abutted flange, realizes centering
The fixed installation of DATA REASONING instrument and the technical effect for stablizing reading of data.
Detailed description of the invention
Fig. 1 is the structure chart for being applied to the measuring mechanism of connection flange in the embodiment of the present invention；
Fig. 2 is the installation diagram for being applied to the measuring mechanism of connection flange in the embodiment of the present invention.
Related label is as follows in attached drawing:
10 --- first support, 11 --- the first secondary support, 12 --- the first compressing member, 13 --- the second compressing member,
14 --- second support, 15 --- the second width bracket, 16 --- third compressing member, 17 --- the 4th compressing member, 20 --- support
Part, 21 --- locking member, 22 --- locking member, 23 --- locking member, 30 --- the first outer circle drift meter, 31 --- second
Outer circle drift meter, 40 --- the first plane complications measuring instrument, 41 --- the second plane complications measuring instrument, 50 --- first axle
It is connection flange, 51 --- the second shafting connection flange, L --- the first shafting connection flange 50 and the second shafting connection flange 51
Between span.
Specific embodiment
The present invention provides a kind of measuring mechanisms applied to connection flange, can be in axial span > 200mm rendezvous method
It in the case where blue centering, remains to deviate abutted flange outer circle, the instrument of Plane Curved broken number evidence fixedly positioning and is mounted on shafting pair
On acting flange, the fixed installation of centering DATA REASONING instrument and the technical effect for stablizing reading of data are realized.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Referring to Fig. 1 and Fig. 2, the embodiment of the invention provides a kind of measuring mechanisms applied to connection flange, including first
Bracket 10, supporting element 20, the first outer circle drift meter 30 and the first plane complications measuring instrument 40, wherein first support 10
First end is vertical with supporting element 20 to be connect, and the top of the supporting element is arranged in；Supporting element 20 passes through locking member 21 and first
Shafting connection flange 50 connects, the second shafting connection flange 51 of setting below the second end of first support 10, in first support 10
It is provided with first secondary support 11 parallel with supporting element 20, close described the second of first support 10 is arranged in the first secondary support 11
On the inside at end, the first outer circle drift meter 30 is arranged in first support 10, and the first outer circle drift meter 30 is arranged
Between the second end and the first secondary support 11, the first plane complications measuring instrument 40 is arranged on the first secondary support 11, and the
One outer circle drift meter 30 and the first plane complications measuring instrument 40 are contacted with the second shafting connection flange 51, so that first
During shafting connection flange 50 and the second shafting connection flange 51 are rotated by 360 °, pass through the first outer circle drift meter 30 and
One plane complications measuring instrument 40 can real-time measurement go out between the first shafting connection flange 50 and the second shafting connection flange 51
Outer circle offset and tortuosity ratio.
Wherein, after the first shafting connection flange 50 and the second shafting connection flange 51 are rotated by 360 °, outside first
Circle drift meter 30 measures the outer circle offset between the first shafting connection flange 50 and the second shafting connection flange 51；It is logical
It crosses the first plane complications measuring instrument 40 and measures complications between the first shafting connection flange 50 and the second shafting connection flange 51
Rate；According to the outer circle offset and the tortuosity ratio, the first shafting connection flange 50 and the second shafting connection flange 51 are obtained
Between centering rate, wherein span L between the first shafting connection flange 50 and the second shafting connection flange 51 is greater than 200mm,
Certainly, the value no more than 200mm also can be set into span L, when span L is not more than 200mm, the length of first support 10
It shortens therewith.
Wherein, first support 10 is arranged between the first shafting connection flange 50 and the second shafting connection flange 51, and first
Bracket 10 is specifically as follows steel construction；Further, supporting element 20 or steel construction, such as can be channel steel, so that
Supporting element 20 and the bonding strength of first support 10 are guaranteed；Further, first support 10 and the first secondary support 11 can be with
Be it is integrally formed, be also possible to the first secondary support 11 and be welded in first support 10, the application is not specifically limited；Further
, when the first outer circle drift meter 30 and the first plane complications measuring instrument 40 are contacted with the second shafting connection flange 51, tool
The measuring head that body can be the first outer circle drift meter 30 is contacted with the second shafting connection flange 51 and the first plane is tortuous
The measuring head of measuring instrument 40 is contacted with the second shafting connection flange 51.
Specifically, be provided with first through hole in first support 10, by the first compressing member 12 and the first through hole by
One outer circle drift meter 30 is fixed in first support 10, wherein the installation of the first outer circle drift meter 30 is positioned at first
In the first through hole on bracket 10, the first outer circle is then compressed by first compressing member 12 vertical with the first through hole
Drift meter 30, so that the first outer circle drift meter 30 can be stably fixed in first support 10, first is compressed
Part 12 can be specially housing screw.
Specifically, it is provided with the second through-hole on the first secondary support 11, it will by the second compressing member 13 and second through-hole
First plane complications measuring instrument 40 is fixed on the first secondary support 11, wherein the installation of the first plane complications measuring instrument 40 is positioned at
In second through-hole on first secondary support 11, the then is compressed by second compressing member 13 vertical with second through-hole
One plane complications measuring instrument 40, so that the first plane complications measuring instrument 40 can be stably fixed on the first secondary support 11,
Second compressing member 13 can be specially housing screw.
Specifically, the measuring mechanism further includes second support 14, the first end of second support 14 is vertical with supporting element 20
Connection, and the lower part of supporting element 20 is set, the second shafting connection flange 51 is set above the second end of second support 14；Second
Secondary support 15 is arranged in second support 14, and parallel with supporting element 20, and leaning on for second support 14 is arranged in the second secondary support 15
On the inside of the nearly second end；Second outer circle drift meter 31 is arranged in second support 14, and is arranged described second
Between end and the first secondary support 11；Second plane complications measuring instrument 41 is arranged on the second secondary support 15, and the second outer circle deviates
Measuring instrument 31 and the second plane complications measuring instrument 41 are contacted with the second shafting connection flange 51, so that in the first shafting attached method
It is tortuous by the second outer circle drift meter 31 and the second plane during orchid 50 and the second shafting connection flange 51 are rotated by 360 °
Measuring instrument 41 can real-time measurement go out the outer circle offset between the first shafting connection flange 50 and the second shafting connection flange 51
And tortuosity ratio.
Wherein, second support 14 and the second secondary support 15 can be integrally formed, be also possible to the weldering of the second secondary support 15
It connects in second support 14, the application is not specifically limited；Further, the second outer circle drift meter 31 and the second Plane Curved
When folding measuring instrument 41 is contacted with the second shafting connection flange 51, the measuring head of the second outer circle drift meter 41 specifically can be
It is contacted with the second shafting connection flange 51 and the measuring head of the second plane complications measuring instrument 41 and the second shafting connection flange 51
Contact.
Specifically, be provided with third through-hole in second support 14, by third compressing member 16 and the third through-hole by
Two outer circle drift meters 31 are fixed in second support 14, wherein the installation of the second outer circle drift meter 31 is positioned at second
In the third through-hole on bracket 14, the second outer circle is then compressed by the third compressing member 16 vertical with the third through-hole
Drift meter 31, so that the second outer circle drift meter 31 can be stably fixed in second support 14, third is compressed
Part 16 can be specially housing screw.
Specifically, it is provided with fourth hole on the second secondary support 15, it will by the 4th compressing member 17 and the fourth hole
Second plane complications measuring instrument 41 is fixed on the second secondary support 15, wherein the installation of the second plane complications measuring instrument 41 is positioned at
In second through-hole on second secondary support 15, the then is compressed by fourth compressing member 17 vertical with second through-hole
Two plane complications measuring instruments 41, so that the second plane complications measuring instrument 41 can be stably fixed on the second secondary support 15,
4th compressing member 17 can be specially housing screw.
Specifically, locking member 21 includes nuts and bolt, then opened up in supporting element 20 and the first shafting connecting flange 50
The through-hole to match with locking member 21, so that bolt can pass through the through-hole of supporting element 20 and the first shafting connecting flange 50,
Then by nut check, so, it is possible so that supporting element 20 is more stable connect with the first shafting connecting flange 50, in order into
One step supporting element 20 more stable to connect with the first shafting connecting flange, and the measuring mechanism further includes washer, the pad
Circle is arranged between locking member 21 and supporting element 20, so that the locking property of locking member 21 is more preferable；Certainly, the number of locking member 21
One or more have can be set in amount, and quantity is set according to actual conditions, and the application is not specifically limited.
Specifically, first support 10 can be connect by locking member 22 with supporting element 20 and second support 14 passes through lock
Tight part 23 is connect with supporting element 20, and locking member 22 and locking member 23 may each comprise screw bolt and nut, and structure is referring specifically to lock
The description of tight part 21.
In actual application, referring to fig. 2, preliminary in the first shafting connection flange 50 and the second shafting connection flange 51
After positioning, supporting element 20 is fixed in the first shafting connection flange 50 by locking member 21, then by locking member 22 by the
One bracket 10 is fixed on the top of supporting element 20, and second support 14 is fixed under supporting element 20 by locking member 23
Portion；Then first outer circle drift meter 30 is installed in first support 10, and installation first is flat on the first secondary support 11
Face complications measuring instrument 40；Similarly, the second outer circle drift meter 31 is installed in second support 14, and in the second width bracket 15
The second plane complications measuring instrument 41 of upper installation；After being installed, 360 ° of first shafting connection flanges 50 of rotation and the second shafting
Connection flange 51 reads the first outer circle drift meter 30, the second outer circle drift meter 31, the first plane complications measuring instrument 40
With the data shown on the second plane complications measuring instrument 41, the first outer circle drift meter 30 and the second outer circle can be taken to deviate and surveyed
Show the average value of data as the outer circle offset on amount instrument 31；And take the first plane complications measuring instrument 40 and second flat
The average value of data is shown on face complications measuring instrument 41 as the tortuosity ratio, according to the outer circle offset and the tortuosity ratio
The centering rate between the first shafting connection flange 50 and the second shafting connection flange 51 can be obtained；Since locking member can be passed through
21, locking member 22, locking member 23, the first compressing member 12, the second compressing member 13, third compressing member 16 and the 4th compressing member 17
The installation and removal of the measuring mechanism are completed, in this way, make the simple and compact for structure of the measuring mechanism, it is light-weight, it carries
It is convenient, easy to operate, applicability is wide, can the generally suitable coupling of shaft system flange centering in axial span > 200mm construct.
By one embodiment or multiple embodiments, the invention has the advantages that advantage:
Due to the measuring mechanism applied to connection flange in the embodiment of the present application, in the first shafting connection flange and
After the second shafting connection flange is rotated by 360 °, measured by the first outer circle drift meter being arranged in first support
Outer circle offset between first shafting connection flange and the second shafting connection flange out；By being arranged on the first secondary support
First plane complications measuring instrument measures the complications between the first shafting connection flange and the second shafting connection flange
Rate；According to the outer circle offset and the tortuosity ratio, the first shafting connection flange and second shafting connection are obtained
Centering rate between flange is connect since the first support is vertical with the supporting element；The supporting element by locking member with
The second shafting connection flange is arranged in the lower section of the connection of first shafting connection flange, the second end of the first support；In this way, making
The first support obtains the support of the supporting element, so as to freely adjust the length of the first support, so that described
The length of first support is unrestricted, in the case where so, it is possible in axial span > 200mm abutted flange pair, remain to by
Abutted flange outer circle deviates, the measuring instrument of Plane Curved broken number evidence fixedly positioning and is mounted on shafting abutted flange, realizes centering
The fixed installation of DATA REASONING instrument and the technical effect for stablizing reading of data.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will make for those skilled in the art it will be apparent that as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the invention.Therefore, the present invention will not
Meeting be limited and the embodiments shown herein, and is to fit to consistent with principles disclosed herein and novel features
Widest scope.
Claims (9)
1. a kind of measuring mechanism applied to connection flange, which is characterized in that inclined including first support, supporting element, the first outer circle
Shift measurement instrument and the first plane complications measuring instrument, wherein the first end of the first support is vertical with the supporting element to be connect, and
The top of the supporting element is set；The supporting element is connect by locking member with the first shafting connection flange, and described first
It is equipped with the second shafting connection flange below the second end of frame, parallel with the supporting element is provided in the first support
One secondary support, first secondary support is arranged on the inside of the close second end of the first support, outside described first
Circle drift meter is arranged in the first support, and the first outer circle drift meter is arranged in the second end and institute
It states between the first secondary support, the first plane complications measuring instrument is arranged on first secondary support, and first outer circle
Drift meter and the first plane complications measuring instrument are contacted with the second shafting connection flange；
Wherein, after the first shafting connection flange and the second shafting connection flange are rotated by 360 °, pass through described
The outer circle that one outer circle drift meter is measured between the first shafting connection flange and the second shafting connection flange is inclined
Shifting amount；The first shafting connection flange and the second shafting attached method are measured by the first plane complications measuring instrument
Tortuosity ratio between orchid；According to the outer circle offset and the tortuosity ratio, the first shafting connection flange and described is obtained
Centering rate between second shafting connection flange.
2. being applied to the measuring mechanism of connection flange as described in claim 1, which is characterized in that be arranged in the first support
There is first through hole, the first outer circle drift meter is fixed on described first by the first compressing member and the first through hole
On bracket.
3. being applied to the measuring mechanism of connection flange as claimed in claim 2, which is characterized in that set on first secondary support
It is equipped with the second through-hole, the first plane complications measuring instrument is fixed on described by the second compressing member and second through-hole
On one secondary support.
4. being applied to the measuring mechanism of connection flange as claimed in claim 3, which is characterized in that further include:
Second support, the first end of the second support is vertical with the supporting element to be connect, and is arranged under the supporting element
The second shafting connection flange is arranged in the top in portion, the second end of the second support；
Second secondary support is arranged in the second support, and parallel with the supporting element, and second secondary support is arranged in institute
It states on the inside of the close second end of second support；
Second outer circle drift meter is arranged in the second support, and is arranged in the second end and the first secondary branch
Between frame；
Second plane complications measuring instrument is arranged on second secondary support, and the second outer circle drift meter and described
Second plane complications measuring instrument is contacted with the second shafting connection flange.
5. being applied to the measuring mechanism of connection flange as claimed in claim 4, which is characterized in that be arranged in the second support
There is third through-hole, the second outer circle drift meter is fixed on described second by third compressing member and the third through-hole
On bracket.
6. being applied to the measuring mechanism of connection flange as claimed in claim 5, which is characterized in that set on second secondary support
It is equipped with fourth hole, the second plane complications measuring instrument is fixed on described by the 4th compressing member and the fourth hole
On two secondary supports.
7. being applied to the measuring mechanism of connection flange as claimed in claim 6, which is characterized in that the supporting element is specially slot
Steel.
8. the use as claimed in claim 7 in the measuring mechanism of connection flange, which is characterized in that further include:
Washer is arranged between the locking member and the supporting element.
9. being applied to the measuring mechanism of connection flange as claimed in claim 8, which is characterized in that the clamp ring includes nut
And bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560704.9A CN109612418A (en) | 2018-12-20 | 2018-12-20 | A kind of measuring mechanism applied to connection flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560704.9A CN109612418A (en) | 2018-12-20 | 2018-12-20 | A kind of measuring mechanism applied to connection flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109612418A true CN109612418A (en) | 2019-04-12 |
Family
ID=66009916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811560704.9A Pending CN109612418A (en) | 2018-12-20 | 2018-12-20 | A kind of measuring mechanism applied to connection flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109612418A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202754U (en) * | 1987-03-07 | 1988-02-03 | 北京第三量具厂 | Concentricity measuring apparatus |
| US20130061485A1 (en) * | 2011-09-14 | 2013-03-14 | Dorsey Metrology International | Bore Gage System for Setting and Measuring Large Diameter Bores |
| CN203396350U (en) * | 2013-08-05 | 2014-01-15 | 郑州电力机械厂 | Opening-closing center alignment tool for rotation device installation |
| KR20150073604A (en) * | 2013-12-23 | 2015-07-01 | 한국철도공사 | Straightness/roundness measuring device of the piston inner surface carrier piston pin bearing insert of diesel locomotive is attached |
| CN206056484U (en) * | 2016-08-18 | 2017-03-29 | 莱芜钢铁集团有限公司 | A kind of diaphragm type coupler alignment tool |
| CN206989849U (en) * | 2017-05-24 | 2018-02-09 | 河北省电力建设第一工程公司 | Shaft coupling center measuring device |
-
2018
- 2018-12-20 CN CN201811560704.9A patent/CN109612418A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202754U (en) * | 1987-03-07 | 1988-02-03 | 北京第三量具厂 | Concentricity measuring apparatus |
| US20130061485A1 (en) * | 2011-09-14 | 2013-03-14 | Dorsey Metrology International | Bore Gage System for Setting and Measuring Large Diameter Bores |
| CN203396350U (en) * | 2013-08-05 | 2014-01-15 | 郑州电力机械厂 | Opening-closing center alignment tool for rotation device installation |
| KR20150073604A (en) * | 2013-12-23 | 2015-07-01 | 한국철도공사 | Straightness/roundness measuring device of the piston inner surface carrier piston pin bearing insert of diesel locomotive is attached |
| CN206056484U (en) * | 2016-08-18 | 2017-03-29 | 莱芜钢铁集团有限公司 | A kind of diaphragm type coupler alignment tool |
| CN206989849U (en) * | 2017-05-24 | 2018-02-09 | 河北省电力建设第一工程公司 | Shaft coupling center measuring device |
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Application publication date: 20190412 |
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| RJ01 | Rejection of invention patent application after publication |