CN209355815U - Subway third rail detection ruler calibrating installation - Google Patents
Subway third rail detection ruler calibrating installation Download PDFInfo
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- CN209355815U CN209355815U CN201920182026.0U CN201920182026U CN209355815U CN 209355815 U CN209355815 U CN 209355815U CN 201920182026 U CN201920182026 U CN 201920182026U CN 209355815 U CN209355815 U CN 209355815U
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- detection ruler
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- 238000001514 detection method Methods 0.000 title claims abstract description 85
- 238000009434 installation Methods 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000011161 development Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The utility model discloses a kind of subway third rail detection ruler calibrating installations, including measuring basis platform, position block, stagger calibrating device, lead high level calibrating device, third rail detection ruler zero-bit determines mechanism, position block, stagger calibrating device are separately mounted on measuring basis platform, high level calibrating device is led to be mounted on stagger calibrating device, position block has calibration datum level, stagger calibrating device leads high level calibrating device perpendicular to measuring basis platform perpendicular to calibration datum level；Third rail detection ruler zero-bit determines that mechanism and the side of measuring basis platform are slidably connected, and third rail detection ruler zero-bit determines mechanism tool guide plate calibration face, and guide plate demarcates face and is parallel to each other with calibration datum level.The subway third rail detection ruler calibrating installation, in track relative positional relationship, carries out calibration measurement to third rail detection ruler, provides magnitude tracing using analog orbit gauge and third rail.
Description
Technical field
The utility model relates to testing calibration field more particularly to a kind of subway third rail detection ruler calibrating installations.
Background technique
With the fast development of China's rail traffic industry, urban track traffic, which has become, solves each public traffic in metropolis
The effective means of congestion, the first choice for safely, quickly also becoming citizens' activities of subway, the construction of Rail traffic network also become city
One name cards of city's development.The continuous development of technology of track traffic, geologic structure difference and design to different geographical need,
Using different technology types.With regard to triformed structure in vehicle power supply current collecting system, comprising: rigid suspension OCS, rigid
Property contact net, third rail contact net.Third rail detection ruler is the measuring instrument for measuring the change in location of third rail.Third rail
Detection ruler effectively monitors height change of the third rail from benchmark rail level, distance change of the third rail from track centerline.With landing
The diversification of iron wire road design, the route using third rail supply system system is more and more, the calibration requirements of third rail detection ruler
It is increasing.
Therefore, for the magnitude tracing of effective guarantee third rail detection ruler, the measurement and calibration for solving third rail detection ruler is aobvious
It obtains very necessary.
Summary of the invention
The purpose of this utility model is to provide a kind of subway third rail detection ruler calibrating installation, subway third rail detections
Ruler calibrating installation, in track relative positional relationship, is calibrated third rail detection ruler using analog orbit gauge and third rail
Measurement, provides magnitude tracing.
Its technical solution is as follows:
Subway third rail detection ruler calibrating installation, including measuring basis platform, position block, stagger calibrating device, lead
High level calibrating device, third rail detection ruler zero-bit determine mechanism, and position block, stagger calibrating device are separately mounted to measurement base
It on quasi- platform, leads high level calibrating device and is mounted on stagger calibrating device, position block has calibration datum level, stagger mark
Mechanism is determined perpendicular to calibration datum level, leads high level calibrating device perpendicular to measuring basis platform；Third rail detection ruler zero-bit determines
Mechanism and the side of measuring basis platform are slidably connected, and third rail detection ruler zero-bit determines mechanism tool guide plate calibration face, guide plate mark
Determine face to be parallel to each other with calibration datum level.
The stagger calibrating device includes slide rail, sliding shoe, stagger calibration component, the slide rail installation
On the measuring basis platform, the sliding shoe is slidably connected with the slide rail, and the glide direction of sliding shoe with
The calibration datum level is mutually perpendicular to, and stagger calibration component is mounted on the top of the slide rail, and with the cunning
Motion block offsets adosculation, and the dipstick metering direction of the stagger calibration component is parallel to each other with the measuring basis platform.
The slide rail includes sliding rail, sliding limited block, and the sliding shoe is slidably connected with the sliding rail,
The sliding limited block is mounted on measuring basis platform, and is connect with the side in the sliding rail glide direction.
The stagger calibration component includes stagger calibration scale, stagger calibration display module, the stagger calibration
Display module is mounted on the top of the sliding limited block, and the stagger calibration scale and stagger calibration display module are sliding
Dynamic connection, the glide direction of the stagger calibration scale are mutually perpendicular to the calibration datum level, the stagger calibration scale
Dipstick metering direction is parallel to each other with the measuring basis platform, and one end of the stagger calibration scale is approached with the sliding shoe to be connect
Touching.
The high level calibrating device of leading includes leading high calibration scale, leading high calibration display module, described to lead high calibration display mould
Block is led high calibration scale and is mounted on the sliding shoe by described, described to lead high calibration scale and described to lead high calibration display module perpendicular
It is directly slidably connected, the dipstick metering direction for leading high calibration scale is perpendicular to the measuring basis platform.
Described to lead high calibration display module and have a vertical slide opening, the vertical slide opening leads high calibration scale and matches with described,
The lower end for leading high calibration scale is connect with the sliding shoe, and the upper end for leading high calibration scale passes through the vertical slide opening and institute
It states and leads high calibration display module and be slidably connected.
The third rail detection ruler zero-bit determines that mechanism includes sliding guide, slide bar, guide plate calibration scale, the measuring basis
The side of platform is equipped with guide plate slide opening, and one end of the slide bar is connect with the sliding guide, and the other end of the slide bar passes through
The side of the guide plate slide opening and the measuring basis platform is slidably connected, and the guide plate calibration scale is mounted on the measuring basis
On platform, one end of the guide plate calibration scale and the sliding guide offset adosculation, and guide plate calibration face is located at the cunning
On the outer end face of dynamic guide plate.
The guide plate calibration scale includes sliding panel calibration display module, guide plate scale, and the measuring basis platform is equipped with
First groove, the sliding panel calibration display module are mounted on first groove, the guide plate scale and the sliding panel
Calibration display module is slidably connected, and sliding dipstick metering direction and the guide plate calibration face of the guide plate scale are mutually perpendicular to, described
One end of guide plate scale and the sliding guide offset adosculation.
The position block is two, and it is two opposite to be located at the stagger calibrating device for two position blocks
The calibration datum level of side, two position blocks is located on same axis.
It should be understood that
Aforementioned " first, second ... " does not represent specific quantity and sequence, is only used for the differentiation to title.
The advantages of below to the utility model or principle are illustrated:
1, subway third rail detection ruler calibrating installation includes measuring basis platform, position block, stagger calibrating device, leads
High level calibrating device, third rail detection ruler zero-bit determine mechanism, in use, third rail detection ruler is ridden over measuring basis platform
On；First to the determination of stagger zero point, the value of stagger zero point is determined by the classification of third rail detection ruler, then adjusts
Three rail detection ruler zero-bits determine that the guide plate of mechanism demarcates face to the distance of position block calibration datum level, obtain third rail detection ruler
The position of zero point；Then, it pulls out at the sliding shoe to position block calibration datum level of value calibrating device, high level is led in movement
Calibrating device is led at high calibration scale to faceplate, makes stagger and lead high level to reset；Then, it is demarcated by stagger
The error of indication of the different location calibration third rail detection ruler stagger of component；Different location by leading high calibration scale calibrates the
Three rail detection rulers lead the error of indication of high level；Obtain the magnitude tracing of third rail detection ruler；
High level is led on the basis of the upper surface of measuring basis platform, stagger determines mechanism with third rail detection ruler zero-bit
On the basis of guide plate calibration face, determine mechanism by adjusting third rail detection ruler zero-bit, it can be achieved that different stagger requirement third
Rail detection ruler zero point determines；By adjust lead high level calibrating device, the calibration calibration scale of stagger calibrating device realizes the
The calibration for leading high level measurement ruler, stagger measurement ruler of three rail detection rulers.The subway third rail detection ruler calibrating installation utilizes simulation rail
Track away from and third rail in track relative positional relationship, calibration measurement is carried out to third rail detection ruler, magnitude tracing is provided.
2, stagger calibrating device includes slide rail, sliding shoe, stagger calibration component, in use, sliding shoe is moved
Moving to position block will calibrate at datum level, reset stagger, and stagger calibration component is for calibrating the drawing of third rail detection ruler
The error of indication being worth out.
3, slide rail includes sliding rail, sliding limited block, and sliding limited block avoids sliding shoe sliding with sliding shoe is limited
Sliding rail out.
4, stagger calibration component includes stagger calibration scale, stagger calibration display module, facilitates calibration third rail inspection
The acquisition of measurement ruler stagger, structure is simple, easy to use.
5, leading high level calibrating device to include includes leading high calibration scale, leading high calibration display module, facilitates calibration third rail inspection
Measurement ruler leads the acquisition of high level, and structure is simple, easy to use.
6, leading high calibration display module has vertical slide opening, leads high calibration scale and matches with vertical slide opening being slidably connected, make
The calibration for leading high level is more accurate.
7, third rail detection ruler zero-bit determines that mechanism includes sliding guide, slide bar, guide plate calibration scale, the of adjustable sliding
Three rail detection ruler zero-bits determine that mechanism meets the calibration for the third rail detection ruler that different center sizes require.
8, guide plate calibration scale includes sliding panel calibration display module, guide plate scale, and different classes of third rail is facilitated to detect
The determination of ruler zero point.
9, position block is two, keeps the determination of third rail detection ruler zero point more convenient.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the utility model embodiment subway third rail detection ruler calibrating installation.
Description of symbols:
10, measuring basis platform, the 11, first groove, 20, position block, 21, calibration datum level, 30, stagger calibration machine
Structure, 31, slide rail, 311, sliding rail, 312, sliding limited block, 32, sliding shoe, 33, stagger calibration component, 331, drawing
Be worth calibration scale out, 332, stagger demarcate display module, 40, lead high level calibrating device, 41, lead high calibration scale, 42, lead high calibration
Display module, 50, third rail detection ruler zero-bit determine mechanism, 51, sliding guide, 511, guide plate slide opening, 512, guide plate demarcate face,
52, slide bar, 53, guide plate calibration scale, 531, sliding panel calibration display module, 532, guide plate scale.
Specific embodiment
The embodiments of the present invention are described in detail below.
As shown in Figure 1, subway third rail detection ruler calibrating installation, including measuring basis platform 10, position block 20, pull-out
Value calibrating device 30, lead high level calibrating device 40, third rail detection ruler zero-bit determines mechanism 50, position block 20, stagger mark
Determine mechanism 30 to be separately mounted on measuring basis platform 10, lead high level calibrating device 40 and be mounted on stagger calibrating device 30,
Position block 20 has calibration datum level 21, and stagger calibrating device 30 leads high level calibrating device perpendicular to calibration datum level 21
40 perpendicular to measuring basis platform 10；Third rail detection ruler zero-bit determines that the side sliding of mechanism 50 and measuring basis platform 10 connects
It connects, third rail detection ruler zero-bit determines that mechanism 50 has guide plate calibration face 512, and guide plate demarcates face 512 and calibration datum level 21 is mutual
In parallel.
Wherein, stagger calibrating device 30 includes slide rail 31, sliding shoe 32, stagger calibration component 33, and sliding is led
Rail 31 is mounted on measuring basis platform 10, and sliding shoe 32 is slidably connected with slide rail 31, and the sliding side of sliding shoe 32
Be mutually perpendicular to calibration datum level 21, stagger calibration component 33 is mounted on the top of slide rail 31, and with sliding shoe 32
Offset adosculation, and the dipstick metering direction of stagger calibration component 33 is parallel to each other with measuring basis platform 10；
Slide rail 31 includes sliding rail 311, sliding limited block 312, and sliding shoe 32 and the sliding of sliding rail 311 connect
It connects, sliding limited block 312 is mounted on measuring basis platform 10, and is connect with the side in 311 glide direction of sliding rail；
It includes stagger calibration scale 331, stagger calibration display module 332, stagger calibration that stagger, which demarcates component 33,
Display module 332 is mounted on the top of sliding limited block 312, and stagger calibration scale 331 and stagger calibration display module 332 are sliding
Dynamic connection, glide direction and the calibration datum level 21 of stagger calibration scale 331 are mutually perpendicular to, the dipstick metering of stagger calibration scale 331
Direction is parallel to each other with measuring basis platform 10, and one end of stagger calibration scale 331 is approached with sliding shoe 32 to be contacted；
Leading high level calibrating device 40 includes leading high calibration scale 41, leading high calibration display module 42, leads high calibration display module
42 are mounted on sliding shoe 32 by leading high calibration scale 41, are led high calibration scale 41 and are connected with high calibration 42 vertical sliding of display module is led
It connects, leads the dipstick metering direction of high calibration scale 41 perpendicular to measuring basis platform 10.
Leading high calibration display module 42 has vertical slide opening, and vertical slide opening matches with high calibration scale 41 is led, and leads high calibration
The lower end of ruler 41 is connect with sliding shoe 32, and the upper end for leading high calibration scale 41 passes through vertical slide opening and leads high calibration display module 42 and slides
Dynamic connection.
Third rail detection ruler zero-bit determines that mechanism 50 includes sliding guide 51, slide bar 52, guide plate calibration scale 53, measuring basis
The side of platform 10 is equipped with guide plate slide opening 511, and one end of slide bar 52 is connect with sliding guide 51, and the other end of slide bar 52, which passes through, leads
Plate slide opening 511 and the side of measuring basis platform 10 are slidably connected, and guide plate calibration scale 53 is mounted on measuring basis platform 10, lead
One end of plate calibration scale 53 and sliding guide 51 offset adosculation, and guide plate calibration face 512 is located on the outer end face of sliding guide 51；
Guide plate calibration scale 53 includes that sliding panel demarcates display module 531, guide plate scale 532, is set on measuring basis platform 10
There is the first groove 11, sliding panel calibration display module 531 is mounted on the first groove 11, and guide plate scale 532 and sliding panel are demarcated
Display module 531 is slidably connected, and sliding dipstick metering direction and the guide plate calibration face 512 of guide plate scale 532 are mutually perpendicular to, guide plate scale
532 one end and sliding guide 51 offset adosculation.
Position block 20 is two, and two position blocks 20 are located at two opposite sides of stagger calibrating device 30, two
The calibration datum level 21 of a position block 20 is located on same axis.
The present embodiment has the advantages that
1, subway third rail detection ruler calibrating installation includes measuring basis platform 10, position block 20, stagger calibration machine
Structure 30, lead high level calibrating device 40, third rail detection ruler zero-bit determines mechanism 50, in use, third rail detection ruler is ridden over survey
It measures on reference platform 10；First to the determination of stagger zero point, stagger zero point is determined by the classification of third rail detection ruler
Value, then adjust third rail detection ruler zero-bit determine mechanism 50 guide plate calibration face 512 to position block 20 calibrate datum level 21
Distance, obtain third rail detection ruler zero point position；Then, the sliding shoe 32 of value calibrating device 30 is pulled out to positioning
Block 20 is calibrated at datum level 21, mobile to lead the leading at high calibration scale 41 to faceplate of high level calibrating device 40, makes to pull out
It is worth and leads high level and resets；Then, third rail detection ruler stagger is calibrated by the different location that stagger demarcates component 33
The error of indication；Different location by leading high calibration scale 41 calibrates the error of indication that third rail detection ruler leads high level；Obtain third
The magnitude tracing of rail detection ruler；
High level is led on the basis of the upper surface of measuring basis platform 10, stagger determines mechanism with third rail detection ruler zero-bit
On the basis of 50 guide plate calibration face 512, mechanism 50 is determined, it can be achieved that different staggers are wanted by adjusting third rail detection ruler zero-bit
The third rail detection ruler zero point asked determines；The calibration mark of high level calibrating device 40, stagger calibrating device 30 is led by adjusting
Scale realizes the calibration for leading high level measurement ruler, stagger measurement ruler of third rail detection ruler.The subway third rail detection ruler calibration cartridge
It sets using analog orbit gauge and third rail in track relative positional relationship, calibration measurement is carried out to third rail detection ruler, is mentioned
For magnitude tracing.
2, stagger calibrating device 30 includes slide rail 31, sliding shoe 32, stagger calibration component 33, in use, will
Sliding shoe 32 is moved to position block 20 and to calibrate at datum level 21, resets stagger, and stagger demarcates component 33 and is used for school
The error of indication of quasi- third rail detection ruler stagger.
3, slide rail 31 includes sliding rail 311, sliding limited block 312, sliding limited block 312 restriction sliding shoe
32, avoid sliding shoe 32 from skidding off sliding rail 311.
4, stagger calibration component 33 includes stagger calibration scale 331, stagger calibration display module 332, facilitates calibration
The acquisition of third rail detection ruler stagger, structure is simple, easy to use.
5, leading high level calibrating device 40 to include includes leading high calibration scale 41, leading high calibration display module 42, facilitates calibration the
Three rail detection rulers lead the acquisition of high level, and structure is simple, easy to use.
6, leading high calibration display module 42 has vertical slide opening, leads the sliding that matches of high calibration scale 41 and vertical slide opening and connects
It connects, keeps the calibration for leading high level more accurate.
7, third rail detection ruler zero-bit determines that mechanism 50 includes sliding guide 51, slide bar 52, and guide plate calibration scale 53 is adjusted
The third rail detection ruler zero-bit of sliding determines that mechanism 50 meets the calibration for the third rail detection ruler that different center sizes require.
8, guide plate calibration scale 53 includes that sliding panel demarcates display module 531, guide plate scale 532, facilitates different classes of the
The determination of three rail detection ruler zero points.
9, position block 20 is two, keeps the determination of third rail detection ruler zero point more convenient.
The above are only specific embodiments of the present invention, does not limit the protection scope of the utility model with this；Not
It violates made any replacement on the basis of the utility model is conceived and improves, the category protection scope of the utility model.
Claims (9)
1. subway third rail detection ruler calibrating installation, which is characterized in that including measuring basis platform, position block, stagger mark
Determine mechanism, lead high level calibrating device, third rail detection ruler zero-bit determines mechanism, position block, stagger calibrating device are pacified respectively
It on measuring basis platform, leads high level calibrating device and is mounted on stagger calibrating device, position block has calibration benchmark
Face, stagger calibrating device lead high level calibrating device perpendicular to measuring basis platform perpendicular to calibration datum level；The detection of third rail
Ruler zero-bit determines that mechanism and the side of measuring basis platform are slidably connected, and third rail detection ruler zero-bit determines mechanism tool guide plate calibration
Face, guide plate demarcate face and are parallel to each other with calibration datum level.
2. subway third rail detection ruler calibrating installation as described in claim 1, which is characterized in that the stagger calibrating device
Component is demarcated including slide rail, sliding shoe, stagger, the slide rail is mounted on the measuring basis platform, described
Sliding shoe is slidably connected with the slide rail, and the glide direction of sliding shoe is mutually perpendicular to the calibration datum level, institute
It states stagger calibration component and is mounted on the top of the slide rail, and offset adosculation with the sliding shoe, the stagger
The dipstick metering direction of calibration component is parallel to each other with the measuring basis platform.
3. subway third rail detection ruler calibrating installation as claimed in claim 2, which is characterized in that the slide rail includes sliding
Dynamic rail road, sliding limited block, the sliding shoe are slidably connected with the sliding rail, and the sliding limited block is mounted on measurement base
On quasi- platform, and it is connect with the side in the sliding rail glide direction.
4. subway third rail detection ruler calibrating installation as claimed in claim 3, which is characterized in that the stagger demarcates component
Display module is demarcated including stagger calibration scale, stagger, the stagger calibration display module is mounted on the sliding limit
The top of block, the stagger calibration scale are slidably connected with stagger calibration display module, the stagger calibration scale
Glide direction is mutually perpendicular to the calibration datum level, the dipstick metering direction of the stagger calibration scale and the measuring basis platform
It is parallel to each other, one end of the stagger calibration scale is approached with the sliding shoe to be contacted.
5. subway third rail detection ruler calibrating installation as claimed in claim 2, which is characterized in that described to lead high level calibrating device
It is described to lead high calibration display module and lead high calibration scale by described and be mounted on including leading high calibration scale, leading high calibration display module
It is described to lead high calibration scale and lead high calibration display module vertical sliding with described and connect on the sliding shoe, it is described to lead high calibration scale
Dipstick metering direction perpendicular to the measuring basis platform.
6. subway third rail detection ruler calibrating installation as claimed in claim 5, which is characterized in that described to lead high calibration display mould
Block has vertical slide opening, and the vertical slide opening leads high calibration scale and match with described, the lower end for leading high calibration scale with it is described
Display module sliding company is demarcated across the vertical slide opening and the height of leading in sliding shoe connection, the upper end for leading high calibration scale
It connects.
7. such as subway third rail detection ruler calibrating installation as claimed in any one of claims 1 to 6, which is characterized in that the third
Rail detection ruler zero-bit determines that mechanism includes sliding guide, slide bar, guide plate calibration scale, and the side of the measuring basis platform, which is equipped with, leads
Plate slide opening, one end of the slide bar are connect with the sliding guide, and the other end of the slide bar passes through the guide plate slide opening and institute
The side for stating measuring basis platform is slidably connected, and the guide plate calibration scale is mounted on the measuring basis platform, the guide plate
One end of calibration scale and the sliding guide offset adosculation, and guide plate calibration face is located at the outer end face of the sliding guide
On.
8. subway third rail detection ruler calibrating installation as claimed in claim 7, which is characterized in that the guide plate calibration scale includes
Sliding panel demarcates display module, guide plate scale, and the measuring basis platform is equipped with the first groove, the sliding panel calibration display
Module is mounted on first groove, and the guide plate scale is slidably connected with sliding panel calibration display module, described to lead
The sliding dipstick metering direction of plate scale is mutually perpendicular to guide plate calibration face, one end of the guide plate scale and the sliding guide
Offset adosculation.
9. such as subway third rail detection ruler calibrating installation as claimed in any one of claims 1 to 6, which is characterized in that the positioning
Block is two, and two position blocks are located at two opposite sides of the stagger calibrating device, two positioning
The calibration datum level of block is located on same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182026.0U CN209355815U (en) | 2019-01-31 | 2019-01-31 | Subway third rail detection ruler calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182026.0U CN209355815U (en) | 2019-01-31 | 2019-01-31 | Subway third rail detection ruler calibrating installation |
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| Publication Number | Publication Date |
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| CN209355815U true CN209355815U (en) | 2019-09-06 |
Family
ID=67803695
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| CN201920182026.0U Active CN209355815U (en) | 2019-01-31 | 2019-01-31 | Subway third rail detection ruler calibrating installation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668493A (en) * | 2019-01-31 | 2019-04-23 | 广州计量检测技术研究院 | Subway third rail detection ruler calibrating installation and its application method |
| CN110987489A (en) * | 2019-12-20 | 2020-04-10 | 中国铁建重工集团股份有限公司 | Calibration table for detection equipment |
-
2019
- 2019-01-31 CN CN201920182026.0U patent/CN209355815U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668493A (en) * | 2019-01-31 | 2019-04-23 | 广州计量检测技术研究院 | Subway third rail detection ruler calibrating installation and its application method |
| CN109668493B (en) * | 2019-01-31 | 2024-07-05 | 广州计量检测技术研究院 | Subway third rail detection ruler calibrating device and application method thereof |
| CN110987489A (en) * | 2019-12-20 | 2020-04-10 | 中国铁建重工集团股份有限公司 | Calibration table for detection equipment |
| CN110987489B (en) * | 2019-12-20 | 2021-11-16 | 中国铁建重工集团股份有限公司 | Calibration table for detection equipment |
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