CN110142300A - Geometric parameter detection method for cold rolling vertical loop track - Google Patents
Geometric parameter detection method for cold rolling vertical loop track Download PDFInfo
- Publication number
- CN110142300A CN110142300A CN201910437200.6A CN201910437200A CN110142300A CN 110142300 A CN110142300 A CN 110142300A CN 201910437200 A CN201910437200 A CN 201910437200A CN 110142300 A CN110142300 A CN 110142300A
- Authority
- CN
- China
- Prior art keywords
- track
- cold rolling
- vertical type
- rolling vertical
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 238000005097 cold rolling Methods 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
- B21B41/12—Arrangements of interest only with respect to provision for indicating or controlling operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention belongs to the technical field of assembly precision control of metallurgical equipment, and discloses a method for detecting geometric parameters of a cold-rolled vertical loop track, which comprises the following steps: target sheets are respectively arranged on a plurality of coordinate sampling points of the cold rolling vertical loop track; acquiring point position coordinates of the target by adopting a non-cooperative target detection method; comparing the point position coordinates with a theoretical design model of the cold rolling vertical loop track, and calculating deviation values of all detection data; and acquiring straightness and verticality of the track, a loop opening distance, a loop track gauge and loop four-track centering parameters based on the deviation value. The method for detecting the geometric parameters of the cold-rolled vertical loop rail realizes high-precision rail detection by arranging the target on the rail and matching with a non-cooperative target detection method.
Description
Technical field
The present invention relates to metallurgical equipment assembly precision control technology field, in particular to a kind of cold rolling vertical type loop track is several
What parameter detection method.
Background technique
Cold rolling producing line vertical loop is mostly four rail loops, and due to settlement of foundation and equipment loss etc., it is periodically right to need
Cold rolling loop carries out spatial accuracy detection.Rail linearity degree, verticality, loop extended distance are generally related to, loop gauge is lived
Four rails are covered to medium geometric parameter.In the prior art, usually each structure is carried out by manual operation measuring device instrument to be surveyed
It measures, then Macro or mass analysis, usual detection error is larger, and leading to final geometric parameter, often precision is lower, and reliability is poor, leads
Cause work safety accident risk high.
Summary of the invention
The present invention provides a kind of cold rolling vertical type loop orbit geometry parameter detection method, solves detection error in the prior art
Greatly, the low technical problem of precision.
In order to solve the above technical problems, the present invention provides a kind of cold rolling vertical type loop orbit geometry parameter detection method,
Include:
Target piece is respectively set on multiple coordinate sample points of cold rolling vertical type loop track；
The position coordinate of the target piece is obtained using no cooperation target detection method；
The Theoretical Design model for comparing the position coordinate Yu cold rolling vertical type loop track, calculates the inclined of each detection data
Difference；
Based on the deviation, rail linearity degree, verticality, loop extended distance, loop gauge and loop four are obtained
Rail centering parameter.
Further, the coordinate sample point includes: the first sample point and the second sample point；
First sample point and second sample point are separately positioned on adjacent the first track side surfaces and the second track
On side；
Wherein, first track side surfaces are the phase of the entrance side of cold rolling vertical type loop track or two tracks of outlet side
Pair two sides；
Second track side surfaces be cold rolling vertical type loop track fore side or driving side two tracks it is opposite
Two sides.
Further, in the case where the track is spliced by multistage branch track, the both ends of every section of branch track
First side and second side are provided with coordinate sample point.
Further, the position coordinate for obtaining the target piece using no cooperation target detection method includes:
Check bit is set in the entrance side and outlet side of cold rolling vertical type loop track respectively, detects the target in first side
Target position coordinate；
Check bit is set on the line of two tracks of the fore side or driving side of cold rolling vertical type loop track, is detected
The position coordinate of target piece in second side.
Further, when calculating the deviation of each detection data, consider the thickness value of the target piece.
Further, the target piece includes: main body；
Contrast color cross target center is provided in the main body.
Further, the no cooperation target detection method is realized based on no cooperation target total station.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The cold rolling vertical type loop orbit geometry parameter detection method provided in the embodiment of the present application, is examined by no cooperation target
Survey method, detects the position coordinate of target on the coordinate sample point of tested track, and is further obtained by the conversion of coordinate system
It obtains measured target and orients coordinate dimension, the ideal model designed by equipment realizes measured data and theoretical model comparison, finally
Target geometric parameter is obtained by calculating.By target cooperation without the spatial position inspection for assisting target monitoring method to realize track
It surveys, compares realization separate-blas estimation with Theoretical Design model, obtain high-precision system detection, arrived so that precision improvement will will be surveyed
0.2mm。
Detailed description of the invention
Fig. 1 is cold rolling vertical type loop orbit geometry parameter detection method flow chart provided by the invention；
Fig. 2 is cold rolling vertical type loop track target arrangement schematic diagram provided by the invention.
Specific embodiment
The embodiment of the present application solves the prior art by providing a kind of cold rolling vertical type loop orbit geometry parameter detection method
Middle detection error is big, the low technical problem of precision.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of cold rolling vertical type loop orbit geometry parameter detection method, comprising:
Target piece is respectively set on multiple coordinate sample points of cold rolling vertical type loop track；
The position coordinate of the target piece is obtained using no cooperation target detection method；
The Theoretical Design model for comparing the position coordinate Yu cold rolling vertical type loop track, calculates the inclined of each detection data
Difference；
Based on the deviation, rail linearity degree, verticality, loop extended distance, loop gauge and loop four are obtained
Rail centering parameter.
Referring to fig. 2, the coordinate sample point includes: the first sample point and the second sample point；First sample point and
Second sample point is separately positioned in adjacent the first track side surfaces and the second track side surfaces.
Specifically, four rail loops include four tracks, and every track is provided with the first track side surfaces and the second rail side
Face.
That is, first track side surfaces be cold rolling vertical type loop track entrance side or outlet side two tracks it is opposite
Two sides, the first track side surfaces 11 of track one, the first track side surfaces 21 of track two, the first track side surfaces of track three
31 and track four the first track side surfaces 41；Second track side surfaces are fore side or the driving of cold rolling vertical type loop track
Opposite two side of two tracks of side, the second track side surfaces 12 of track one, the second track side surfaces 22 of track two, rail
First track side surfaces 32 in road three and the first track side surfaces 42 of track four.
In general, in the case where the track is spliced by multistage branch track, the both ends of every section of branch track
First side and second side are provided with coordinate sample point.So as to judge the assembly precision of each branch track.
Further, the position coordinate for obtaining the target piece using no cooperation target detection method includes:
Check bit is set in the entrance side and outlet side of cold rolling vertical type loop track respectively, detects the target in first side
Target position coordinate；
Check bit is set on the line of two tracks of the fore side or driving side of cold rolling vertical type loop track, is detected
The position coordinate of target piece in second side.
Further, when calculating the deviation of each detection data, the thickness value of the target piece is considered, to avoid target piece
The precision of thickness effect positioning coordinate.
Further, the target piece includes: main body；Contrast color cross target center is provided in the main body.
In general, target piece is with contrast color cross star label among bright non-dark colors circular paper, and the back side is covered viscous
Glue is closed, metal surface is adhered to.
Further, the no cooperation target detection method is realized based on no cooperation target total station.
It will be illustrated below by specific operating process.
Using total station without cooperation target detection technique, respectively in fore side double track interposition, entrance side, outlet side three
Erect-position detects the top surface of four tracks with side, and every track is that single rail both ends take a little in interface up and down.
It is wide by every track rail of vernier caliper measurement.
After obtaining raceway surface space coordinate, coordinate space is converted, to be oriented to siding track working region lowest order
It is set to origin, rolling direction is forward direction, establishes coordinate system, with the fitting that designs a model, calculates offset.
Algorithm (by taking the four rail point i in sustained height as an example):
Key parameter: the fore side entrance face center direction point x coordinate value xOI；
The fore side exit end face center direction point x coordinate value xOO；
The driving side entrance face center direction point x coordinate value xDI；
The driving side exit end face center direction point x coordinate value xDO；
The fore side entrance side central point position direction y coordinate value yOI；
Fore side exports the side central point position direction y coordinate value yOO；
The driving side entrance side central point position direction y coordinate value yDI；
Driving side exports the side central point position direction y coordinate value yDO；
The wide w of fore side entrance track railOI；
The wide w of fore side exit track railOO；
The wide w of driving side entrance track railDI；
The wide w of driving side exit track railDO；
Loop standard openings a
Loop standard gauge b
Loop design off-centring d
Calculated result: fore side entrance track verticality Δ xOIi=xOIi；
Fore side exit track verticality Δ xOOi=xOOi-a；
Transmission side entrance track verticality Δ xDIi=xDIi；
Transmission side exit track verticality Δ xDOi=xDOi-a；
Fore side openings delta aOi=xOOi-xOIi；
Transmission side openings delta aDi=xDOi-xDIi；
Fore side entrance track straightness
Fore side exit track straightness
Transmission side entrance track straightness
Transmission side exit track straightness
Entrance side gauge
Outlet side gauge
Four rail centering of loop:
Non-guide siding track is oppositely oriented siding track disalignment amount；
Entrance or outlet side track centerline are with respect to strip Operation Centre line deviation.
By pasting calibration substrate, measurement calibration substrate on 0 grade or 0 grade or more flatness marble level calibration table top
Then apparent height coordinate pastes target piece in substrate surface, measure target piece apparent height coordinate, it is thick that calculating difference obtains target piece
Degree.
Specific implementation process of the present invention is broadly divided into three parts: 1, target piece is laid；2 loop track opening degree, verticality inspection
It surveys；3, loop gauge, Linearity surveying；4, four rail location positions and two dimension are shown.
Branch point is gradually illustrated below.
One, target piece is laid
Step 01: the sundries such as cleaning raceway surface rust, greasy dirt；
Step 02: laying target piece in every section track both ends top surface and side；
Two, loop track opening degree and measuring for verticality
Step 01: instrument stan is set on fore side (or transmission side) two rail line；
Step 02: by instrument leveling, control errors are within 0.001 °；
Step 03: taking dot laser aligned inlet rail top face centre bit, 0 ° of the elevation angle, and state will be defined as 0 ° of level this moment
Angle；
Step 04: 180 ° of instrument modulation level angle, 0 ° of the elevation angle, observation takes a position, inclined with exit track end face center position
Within poor 1mm, if overproof, 01~step 04 of repeat steps；
Step 05: it measures each top target piece position and instrument orients coordinate value, and float up and down and obtain five samples, record
Stationary value.
Three, loop rail square and Linearity surveying
Step 01: instrument is placed near entrance track, makes two trackside faces face instrument as far as possible, and instrument is to entrance first
There are visual conditions for foundation roller；
Step 02: detection bottom roller entrance side surface bus both ends coordinate；
Step 03: positive by two o'clock direction definition coordinate system X；
Step 04: it measures each side target piece position and instrument X orients coordinate value, and float up and down and obtain five samples, note
Record stationary value；
Step 05: instrument is placed and near exit track, makes two trackside faces face instrument as far as possible, and instrument is last to exporting
There are visual conditions for one foundation roller；
Step 06: detection bottom roller exports side surface bus both ends coordinate；
Step 07: positive by two o'clock direction definition coordinate system X；
Step 08: it measures each side target piece position and instrument X orients coordinate value, and float up and down and obtain five samples, note
Record stationary value.
Four, data are recorded, calculated result draws two-dimentional line chart
Step 01: formula relationship described in upper section summary of the invention being input to excel table, utilizes excel function
Computing function makes data realize that data calculate automatically；
Step 02: two-dimentional line chart being drawn by excel, by point offset direction and in mark and line chart.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The cold rolling vertical type loop orbit geometry parameter detection method provided in the embodiment of the present application, is examined by no cooperation target
Survey method, detects the position coordinate of target on the coordinate sample point of tested track, and is further obtained by the conversion of coordinate system
It obtains measured target and orients coordinate dimension, the ideal model designed by equipment realizes measured data and theoretical model comparison, finally
Target geometric parameter is obtained by calculating.By target cooperation without the spatial position inspection for assisting target monitoring method to realize track
It surveys, compares realization separate-blas estimation with Theoretical Design model, obtain high-precision system detection, arrived so that precision improvement will will be surveyed
0.2mm。
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (7)
1. a kind of cold rolling vertical type loop orbit geometry parameter detection method characterized by comprising
Target piece is respectively set on multiple coordinate sample points of cold rolling vertical type loop track；
The position coordinate of the target piece is obtained using no cooperation target detection method；
The Theoretical Design model for comparing the position coordinate Yu cold rolling vertical type loop track, calculates the deviation of each detection data
Value；
Based on the deviation, rail linearity degree, verticality, four rail pair of loop extended distance, loop gauge and loop are obtained
Middle parameter.
2. cold rolling vertical type loop orbit geometry parameter detection method as described in claim 1, which is characterized in that the coordinate takes
Sampling point includes: the first sample point and the second sample point；
First sample point and second sample point are separately positioned on adjacent the first track side surfaces and the second track side surfaces
On；
Wherein, first track side surfaces be cold rolling vertical type loop track entrance side or outlet side two tracks it is opposite
Two sides；
Second track side surfaces are opposite two of the fore side of cold rolling vertical type loop track or two tracks of driving side
A side.
3. cold rolling vertical type loop orbit geometry parameter detection method as claimed in claim 2, which is characterized in that in the track
In the case where being spliced by multistage branch track, the first side and second side at the both ends of every section of branch track are provided with seat
Mark sample point.
4. cold rolling vertical type loop orbit geometry parameter detection method as described in claim 1, which is characterized in that described to use nothing
The position coordinate that cooperation target detection method obtains the target piece includes:
Check bit is set in the entrance side and outlet side of cold rolling vertical type loop track respectively, detects the target in first side
Position coordinate；
Check bit, detection second are set on the line of two tracks of the fore side or driving side of cold rolling vertical type loop track
The position coordinate of target piece on side.
5. such as the described in any item cold rolling vertical type loop orbit geometry parameter detection methods of Claims 1 to 4, it is characterised in that:
When calculating the deviation of each detection data, the thickness value of the target piece is considered.
6. cold rolling vertical type loop orbit geometry parameter detection method as claimed in claim 5, which is characterized in that the target piece packet
It includes: main body；
Contrast color cross target center is provided in the main body.
7. cold rolling vertical type loop orbit geometry parameter detection method as claimed in claim 5, it is characterised in that: the no cooperation
Object detection method is realized based on no cooperation target total station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437200.6A CN110142300B (en) | 2019-05-24 | 2019-05-24 | Geometric parameter detection method for cold rolling vertical loop track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437200.6A CN110142300B (en) | 2019-05-24 | 2019-05-24 | Geometric parameter detection method for cold rolling vertical loop track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110142300A true CN110142300A (en) | 2019-08-20 |
| CN110142300B CN110142300B (en) | 2021-02-26 |
Family
ID=67592927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910437200.6A Active CN110142300B (en) | 2019-05-24 | 2019-05-24 | Geometric parameter detection method for cold rolling vertical loop track |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110142300B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849298A (en) * | 2019-11-07 | 2020-02-28 | 中铁宝桥集团有限公司 | Installation detection and error analysis method for guide rail |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100822977B1 (en) * | 2002-07-12 | 2008-04-16 | 주식회사 포스코 | Guide roll level measuring apparatus in a strip loop control utility |
| CN102445166A (en) * | 2011-09-21 | 2012-05-09 | 天元建设集团有限公司 | Driving track detection method |
| CN102950464A (en) * | 2011-08-17 | 2013-03-06 | 五冶集团上海有限公司 | Method for mounting continuous production line of non-oriented silicon steel |
| CN203079561U (en) * | 2013-01-18 | 2013-07-24 | 新疆维吾尔自治区特种设备检验研究院 | Crane gauge deviation value automatic monitoring device |
| CN103212584A (en) * | 2012-01-20 | 2013-07-24 | 五冶集团上海有限公司 | Method for controlling off-tracking of band steel of oriented silicon steel ultra-long multi-track horizontal loop |
| CN103264711A (en) * | 2013-05-31 | 2013-08-28 | 株洲时代电子技术有限公司 | Rail parameter measuring system |
| CN104358194A (en) * | 2014-10-27 | 2015-02-18 | 同济大学 | Static smoothness measurement and analysis method for rail based on laser tracker |
| CN105562438A (en) * | 2014-10-10 | 2016-05-11 | 五冶集团上海有限公司 | Quick debugging method of vertical loop |
| CN205506040U (en) * | 2016-02-03 | 2016-08-24 | 宝山钢铁股份有限公司 | Quick detection device of guide rail |
| CN106595700A (en) * | 2015-10-15 | 2017-04-26 | 南京理工大学 | Target channel space reference calibration method based on three-point coordinate measurement |
| CN107101586A (en) * | 2017-04-24 | 2017-08-29 | 沪杭铁路客运专线股份有限公司 | A kind of method and device for being used to detect CRTS II type fragment-free track slab space geometry morphemes |
| CN107782240A (en) * | 2017-09-27 | 2018-03-09 | 首都师范大学 | A kind of two dimensional laser scanning instrument scaling method, system and device |
-
2019
- 2019-05-24 CN CN201910437200.6A patent/CN110142300B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100822977B1 (en) * | 2002-07-12 | 2008-04-16 | 주식회사 포스코 | Guide roll level measuring apparatus in a strip loop control utility |
| CN102950464A (en) * | 2011-08-17 | 2013-03-06 | 五冶集团上海有限公司 | Method for mounting continuous production line of non-oriented silicon steel |
| CN102445166A (en) * | 2011-09-21 | 2012-05-09 | 天元建设集团有限公司 | Driving track detection method |
| CN103212584A (en) * | 2012-01-20 | 2013-07-24 | 五冶集团上海有限公司 | Method for controlling off-tracking of band steel of oriented silicon steel ultra-long multi-track horizontal loop |
| CN203079561U (en) * | 2013-01-18 | 2013-07-24 | 新疆维吾尔自治区特种设备检验研究院 | Crane gauge deviation value automatic monitoring device |
| CN103264711A (en) * | 2013-05-31 | 2013-08-28 | 株洲时代电子技术有限公司 | Rail parameter measuring system |
| CN105562438A (en) * | 2014-10-10 | 2016-05-11 | 五冶集团上海有限公司 | Quick debugging method of vertical loop |
| CN104358194A (en) * | 2014-10-27 | 2015-02-18 | 同济大学 | Static smoothness measurement and analysis method for rail based on laser tracker |
| CN106595700A (en) * | 2015-10-15 | 2017-04-26 | 南京理工大学 | Target channel space reference calibration method based on three-point coordinate measurement |
| CN205506040U (en) * | 2016-02-03 | 2016-08-24 | 宝山钢铁股份有限公司 | Quick detection device of guide rail |
| CN107101586A (en) * | 2017-04-24 | 2017-08-29 | 沪杭铁路客运专线股份有限公司 | A kind of method and device for being used to detect CRTS II type fragment-free track slab space geometry morphemes |
| CN107782240A (en) * | 2017-09-27 | 2018-03-09 | 首都师范大学 | A kind of two dimensional laser scanning instrument scaling method, system and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849298A (en) * | 2019-11-07 | 2020-02-28 | 中铁宝桥集团有限公司 | Installation detection and error analysis method for guide rail |
| CN110849298B (en) * | 2019-11-07 | 2021-05-25 | 中铁宝桥集团有限公司 | Installation detection and error analysis method for guide rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110142300B (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203079561U (en) | Crane gauge deviation value automatic monitoring device | |
| CN201488689U (en) | Measuring instrument for measuring minimum ground clearance of automobile | |
| CN106052599A (en) | Apparatus of measuring linear guide rail precision and non-contact measurement method | |
| CN107479078A (en) | Geodetic coordinates is converted to the method and system of separate planes coordinate in railroad survey | |
| CN110371816A (en) | Automatic trailing type elevator guide rail squareness detecting instrument and its detection method | |
| CN106123849A (en) | The monitoring method of Vault settlement and monitoring element thereof in a kind of bored tunnel | |
| CN101819035B (en) | Detection method used for manufacturing CRTS II type track slabs | |
| CN113324476A (en) | Crane guide rail detection system and detection method thereof | |
| CN209382013U (en) | Satellite positioning and the integrated track detection car of inertial navigation | |
| CN110142300A (en) | Geometric parameter detection method for cold rolling vertical loop track | |
| CN212806855U (en) | Device for measuring height of weld leg at specified position of pipe-plate weld joint | |
| CN205940484U (en) | Measure device of linear guide precision | |
| CN110904751B (en) | Railway gauge detection method and device | |
| CN108343448A (en) | A kind of method that arbitrary cross-section posture in tunnel determines | |
| CN206876177U (en) | The fast-positioning device of Metro Tunnel circuit measuring point point position | |
| CN106949886B (en) | Rapid positioning device and positioning method for subway tunnel engineering line measuring point positions | |
| CN112647378B (en) | Double-prism rail inspection trolley measuring method | |
| CN107626752B (en) | Correction method for roll pass station | |
| CN109855611A (en) | A kind of PC wall rapid survey calibration method based on total station | |
| CN112304282B (en) | Method for mounting and measuring rails of centrifugal machine | |
| CN211619787U (en) | Device for measuring central line of crane track | |
| CN210014743U (en) | Clutch diaphragm spring detects frock | |
| CN112833856B (en) | High-precision port area yard track detection method based on total station | |
| CN103512507A (en) | Rail-gauge measuring method of large-span steel rail | |
| CN221037253U (en) | Measuring tool for detecting symmetry degree of alloy steel frog core rail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |