CN112629373B - Pipeline internal diameter and flatness accurate measurement device capable of automatically adjusting bracket position - Google Patents
Pipeline internal diameter and flatness accurate measurement device capable of automatically adjusting bracket position Download PDFInfo
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- CN112629373B CN112629373B CN202110008901.5A CN202110008901A CN112629373B CN 112629373 B CN112629373 B CN 112629373B CN 202110008901 A CN202110008901 A CN 202110008901A CN 112629373 B CN112629373 B CN 112629373B
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a precise measuring device for the inner diameter and the flatness of a pipeline, in particular to a precise measuring device for the inner diameter and the flatness of the pipeline, which can automatically adjust the position of a bracket, and comprises the bracket, a lifting mechanism, a correcting mechanism, a rotating distance measuring mechanism, a scraping mechanism and the like; the support is connected with elevating system in the slidingtype, corrects mechanism sliding connection on elevating system, is equipped with rotation range finding mechanism on the correction mechanism, is equipped with scraping mechanism on the rotation range finding mechanism. Through rotating range finding mechanism, fluting disc promotes the slide bar and its upper device towards keeping away from the dwang direction motion, slide and pipeline inner wall contact, and the slide passes through first fixed block and drives the tape measure and move towards keeping away from the dwang direction, stops to rotate fluting disc, and the tape measure the pipeline internal diameter, can be accurate measure the pipeline inner wall, and the reading on the user reading tape measure is pipeline internal diameter size.
Description
Technical Field
The invention relates to a precise measuring device for the inner diameter and the flatness of a pipeline, in particular to a precise measuring device for the inner diameter and the flatness of the pipeline, which can automatically adjust the position of a bracket.
Background
The pipeline measurement is a basic work of metal supervision, which is also called metal technical supervision, the pipeline is usually required to be measured and checked for the inner diameter size in construction, and when the inner diameter of the pipeline is measured, a plurality of actual sizes with different values are often measured, and the traditional detection personnel position the circle center by the personal feeling of the pipeline inner diameter measurement method.
The traditional measuring method locates the circle center by the personal sense of the detecting personnel, thus inaccurate measuring data can be caused, the inner diameter position needs to be repeatedly adjusted and measured, the inner diameter of the pipeline can not be accurately measured, and inconvenience is brought to the measurement.
Disclosure of Invention
The invention aims to provide the pipeline inner diameter and flatness accurate measuring device which can automatically adjust the distance according to the inner diameter of a pipeline, can judge whether the edge of a pipeline opening is flat or not and can scrape burrs on the inner wall of the pipeline, so as to solve the problems that the measured data is inaccurate, the inner diameter position needs to be repeatedly adjusted and repeatedly measured in the background art.
The technical scheme of the invention is as follows: the utility model provides an accurate measuring device of pipeline internal diameter and roughness of independently adjusting support position, includes support, elevating system, correction mechanism, rotates range finding mechanism, strikes off mechanism and roughness testing mechanism, and sliding connection has elevating system in the support, corrects the mechanism and connects on elevating system, is equipped with rotation range finding mechanism on the correction mechanism, rotates to be equipped with on the range finding mechanism and strikes off the mechanism, and the roughness testing mechanism is located and strikes off on the mechanism.
Further, the lifting mechanism comprises an electric push rod, a sliding frame and a first connecting frame, the electric push rod is connected to the inner bottom surface of the bracket in a sliding mode, the sliding frame is fixedly connected to the electric push rod, and the first connecting frame is fixedly arranged at the top of the electric push rod.
Further, the correction mechanism comprises a hollow plate, a first sliding block, a second sliding block and a second connecting frame, wherein the upper part of the sliding frame is connected with the hollow plate in a sliding manner, the first sliding block is connected in the hollow plate in a sliding manner, one end of the first sliding block is fixedly connected with the second connecting frame, the bottom of the second connecting frame is fixedly connected with the second sliding block, and the second sliding block is matched with the first connecting frame in a sliding manner.
Further, the rotary ranging mechanism comprises a slotted disc, a cross hollow frame, a rotating rod, a sliding plate, a first fixed block and a tape measure, wherein the cross hollow frame is fixedly arranged on the second connecting frame, the rotating rod is rotationally connected to the middle part of the second connecting frame, the cross hollow frame is rotationally connected with the rotating rod, the slotted disc is fixedly connected to the rotating rod, the sliding plate is distributed in the cross hollow frame, the sliding rod is fixedly connected to one side of the sliding plate, the sliding rod is matched with the slotted disc in a sliding manner, the first fixed block is fixedly connected to the two sliding plates, the tape measure is fixedly connected to the first fixed block, and one end of the tape measure is fixedly connected with the first fixed block at the other position.
Further, the scraping mechanism comprises a supporting frame, a first sliding rod, a third sliding block, a scraper, a first spring and a barrier strip, wherein the supporting frame is fixedly connected to one side of the slotted disc in a distributed mode, the first sliding rod is fixedly connected to the supporting frame, the third sliding block is connected to the first sliding rod in a sliding mode, the scraper is fixedly connected to the third sliding block, the first spring is connected between the third sliding block and the supporting frame, the pair of barrier strips are fixedly connected to the first fixing block, two barrier strips are fixedly connected to the second connecting frame in the same mode, and the barrier strips are in contact with the scraper.
Further, the flatness testing mechanism further comprises a second fixed block, a second spring, a sliding strip, a fourth sliding block and a second sliding rod, wherein the second fixed block is fixedly connected to the third sliding block, the sliding strip is connected to the third sliding block in a sliding mode, the fourth sliding block is fixedly connected to the sliding strip, the second spring is connected between the fourth sliding block and the second fixed block, the second sliding rod is connected to the second fixed block in a sliding mode, and the fourth sliding block is fixedly connected to one end of the second sliding rod.
The beneficial effects are that: through elevating system and correction mechanism, user manual control electric putter is flexible, and first link drives second link and upper device up-and-down reciprocating motion, adjusts second link and upper device and pipeline mouth corresponding position, makes second link and upper device and pipeline mouth align, is convenient for follow-up measurement pipeline internal diameter, and manual promotion carriage moves towards being close to pipeline mouth direction for the hollow frame of cross is located the pipeline, and first link is spacing with pipeline mouth edge contact, is convenient for accurately measure pipeline internal diameter.
Through rotating range finding mechanism, fluting disc promotes the slide bar and its upper device towards keeping away from the dwang direction motion, slide and pipeline inner wall contact, and the slide passes through first fixed block and drives the tape measure and move towards keeping away from the dwang direction, stops to rotate fluting disc, and the tape measure the pipeline internal diameter, can be accurate measure the pipeline inner wall, and the reading on the user reading tape measure is pipeline internal diameter size.
Through striking off mechanism and roughness accredited testing organization, the scraper is closely laminated with the pipeline inner wall, will strike off the burr of pipeline inner wall, and applicable pipeline of different internal diameter sizes simultaneously, fourth slider and pipeline mouth edge contact, whether the user judges pipeline mouth edge and levels through observing whether fourth slider motion.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a partial perspective structure of the present invention.
Fig. 3 is a schematic perspective view of the lifting mechanism of the present invention.
Fig. 4 is a schematic perspective view of the correcting mechanism of the present invention.
Fig. 5 is a schematic perspective view showing the structure of the correcting mechanism according to the present invention.
Fig. 6 is a schematic cross-sectional perspective view of the hollow slab of the present invention.
Fig. 7 is a schematic perspective view of a rotary ranging mechanism according to the present invention.
Fig. 8 is a schematic perspective view of the scraping mechanism of the present invention.
Fig. 9 is an enlarged schematic view of the structure of the present invention a.
In the reference numerals: the device comprises a 1-bracket, a 2-lifting mechanism, a 2-1-electric push rod, a 2-sliding frame, a 2-3-first connecting frame, a 3-correcting mechanism, a 3-1-hollow plate, a 3-2-first sliding block, a 3-second sliding block, a 3-4-second connecting frame, a 4-rotating distance measuring mechanism, a 4-1-grooved disc, a 4-2-cross hollow frame, a 4-3-rotating rod, a 4-sliding rod, a 4-5-sliding plate, a 4-6-first fixed block, a 4-7-measuring tape, a 5-scraping mechanism, a 5-1-supporting frame, a 5-2-first sliding rod, a 5-3-third sliding block, a 5-4-scraping knife, a 5-first spring, a 5-6-blocking bar, a 6-flatness testing mechanism, a 6-1-second fixed block, a 6-2-second spring, a 6-3-sliding bar, a 6-4-fourth sliding block and a 6-5-second sliding bar.
Detailed Description
Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, and the specific connection modes of the parts adopt conventional means such as mature bolts, rivets, welding, pasting and the like in the prior art, and the detailed description is omitted.
Example 1
The utility model provides an accurate measuring device of pipeline internal diameter and roughness of independently adjusting support position, as shown in fig. 1-9, including support 1, elevating system 2, correction mechanism 3, rotation range finding mechanism 4, strike-off mechanism 5 and roughness testing mechanism 6, sliding connection has elevating system 2 in the support 1, correction mechanism 3 sliding connection is on elevating system 2, be equipped with rotation range finding mechanism 4 on the correction mechanism 3, rotation range finding mechanism 4 is used for accurately measuring the pipeline internal diameter, be equipped with strike-off mechanism 5 on the rotation range finding mechanism 4, strike-off mechanism 5 is used for striking off the burr of pipeline inner wall, roughness testing mechanism 6 is located on strike-off mechanism 5, roughness testing mechanism 6 is used for judging whether pipeline mouth edge is level.
The lifting mechanism 2 comprises an electric push rod 2-1, a sliding frame 2-2 and a first connecting frame 2-3, wherein the electric push rod 2-1 is connected to the inner bottom surface of the bracket 1 in a sliding manner, the sliding frame 2-2 is fixedly connected to the electric push rod 2-1, and the first connecting frame 2-3 is fixedly arranged at the top of the electric push rod 2-1 far away from the bracket 1.
The correcting mechanism 3 comprises a hollow plate 3-1, a first sliding block 3-2, a second sliding block 3-3 and a second connecting frame 3-4, wherein the upper part of the sliding frame 2-2 is connected with the hollow plate 3-1 in a sliding manner, the first sliding block 3-2 is connected in the hollow plate 3-1 in a sliding manner, one end of the first sliding block 3-2 far away from the hollow plate 3-1 is fixedly connected with the second connecting frame 3-4, the bottom of the second connecting frame 3-4 is fixedly connected with the second sliding block 3-3, and the second sliding block 3-3 is matched with the first connecting frame 2-3 in a sliding manner.
The rotary distance measuring mechanism 4 comprises a slotted disc 4-1, a cross hollow frame 4-2, a rotary rod 4-3, a sliding rod 4-4, a sliding plate 4-5, a first fixed block 4-6 and a tape measure 4-7, wherein the cross hollow frame 4-2 is fixedly arranged on a second connecting frame 3-4 far away from the first sliding block 3-2, the rotary rod 4-3 is rotationally connected to the middle part of the second connecting frame 3-4, the cross hollow frame 4-2 is rotationally connected with the rotary rod 4-3, the slotted disc 4-1 is fixedly connected to the rotary rod 4-3, the sliding plate 4-5 is in distributed sliding connection in the cross hollow frame 4-2, the sliding rod 4-4 is fixedly connected to one side of the sliding plate 4-5 far away from the first sliding block 3-2, the sliding rod 4-4 is in sliding fit with the slotted disc 4-1, the first fixed block 4-6 is fixedly connected to the two sliding plates 4-5 far away from the second connecting frame 3-4, the tape measure 4-7 is fixedly connected to the first fixed block 4-6, and the tape measure 4-7 is fixedly connected to one end of the pipeline, and the other fixed block 4-6 is fixedly connected to one end of the first fixed block 4-6.
The scraping mechanism 5 comprises a supporting frame 5-1, a first sliding rod 5-2, a third sliding block 5-3, a scraper 5-4, a first spring 5-5 and a blocking strip 5-6, wherein one side of a slotted disc 4-1 close to the sliding rod 4-4 is fixedly connected with the supporting frame 5-1 in a distributed mode, the first sliding rod 5-2 is fixedly connected to the supporting frame 5-1 far away from the slotted disc 4-1, the third sliding block 5-3 is connected to the first sliding rod 5-2 in a sliding mode, the scraper 5-4 is fixedly connected to the third sliding block 5-3, the scraper 5-4 is used for scraping burrs on the inner wall of a pipeline, the first spring 5-5 is connected between the third sliding block 5-3 and the supporting frame 5-1, a pair of blocking strips 5-6 are fixedly connected to the first fixed block 4-6, two blocking strips 5-6 are fixedly connected to the second connecting frame 3-4, the blocking strip 5-6 is used for blocking the scraper 5-4, and the blocking strip 5-6 is contacted with the scraper 5-4.
The flatness testing mechanism 6 further comprises a second fixed block 6-1, a second spring 6-2, a sliding strip 6-3, a fourth sliding block 6-4 and a second sliding rod 6-5, the second fixed block 6-1 is fixedly connected to the third sliding block 5-3, the sliding strip 6-3 is connected to the third sliding block 5-3 in a sliding mode, the fourth sliding block 6-4 is fixedly connected to the sliding strip 6-3, the second spring 6-2 is connected between the fourth sliding block 6-4 and the second fixed block 6-1, the second sliding rod 6-5 is connected to the second fixed block 6-1 in a sliding mode, one end of the second sliding rod 6-5 far away from the second fixed block 6-1 is fixedly connected to the fourth sliding block 6-4, and whether the edge of a pipeline port is smooth or not is judged by observing whether the fourth sliding block 6-4 moves.
When the inner diameter of a pipeline is required to be measured, a user places the equipment at a pipeline opening of the pipeline to be measured, the user manually controls the electric push rod 2-1 to stretch and retract, the first connecting frame 2-3 drives the second connecting frame 3-4 and an upper device thereof to reciprocate up and down, the rotating rod 4-3 is adjusted to correspond to the center of the pipeline opening, the second connecting frame 3-4 and the upper device thereof are aligned with the pipeline opening, the subsequent measurement of the inner diameter of the pipeline is facilitated, the electric push rod 2-1 is manually controlled to stop stretching, the sliding frame 2-2 is manually pushed to move towards a direction close to the pipeline opening, the cross hollow frame 4-2 is positioned in the pipeline, and the first connecting frame 2-3 contacts with the edge of the pipeline opening to limit the pipeline, so that the inner diameter of the pipeline is conveniently and accurately measured. The grooving disc 4-1 is manually rotated anticlockwise, the grooving disc 4-1 drives the supporting frame 5-1 and the upper device of the grooving disc to rotate anticlockwise, the barrier strip 5-6 is separated from the scraper 5-4, the first spring 5-5 in a compressed state is reset, the first spring 5-5 is reset to drive the third sliding block 5-3 and the scraper 5-4 to move towards the direction away from the rotating rod 4-3, the scraper 5-4 is tightly attached to the inner wall of a pipeline, burrs on the inner wall of the pipeline are scraped, the grooving disc is applicable to pipelines with different inner diameters, meanwhile, the fourth sliding block 6-4 is contacted with the edge of a pipeline opening, when the edge of the pipeline opening is in uneven and protruding, the edge of the pipeline opening pushes the fourth sliding block 6-4 to move towards the direction close to the second fixed block 6-1, the second spring 6-2 is compressed, and a user judges whether the edge of the pipeline opening is even or not by observing whether the fourth sliding block 6-4 moves.
When a user rotates the slotted disc 4-1 anticlockwise, the slotted disc 4-1 pushes the sliding rod 4-4 and the upper device thereof to move towards the direction far away from the rotating rod 4-3, the sliding plate 4-5 is in contact with the inner wall of the pipeline, the sliding plate 4-5 drives the measuring tape 4-7 to move towards the direction far away from the rotating rod 4-3 through the first fixed block 4-6, the slotted disc 4-1 stops rotating, the measuring tape 4-7 measures the inner diameter of the pipeline, the inner wall of the pipeline can be accurately measured, and the user reads the reading on the measuring tape 4-7 to be the inner diameter size of the pipeline. After the inner diameter of the pipeline is measured, a user manually rotates the slotted disc 4-1 clockwise to reset, manually pushes the third sliding block 5-3 and the upper device thereof to move towards the direction close to the rotating rod 4-3, and the first spring 5-5 is reset to be compressed, so that the blocking strip 5-6 blocks the scraper 5-4.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. Accurate measuring device of pipeline internal diameter and roughness of independently adjusting support position, its characterized in that: the device comprises a support (1), a lifting mechanism (2), a correction mechanism (3), a rotary ranging mechanism (4), a scraping mechanism (5) and a flatness testing mechanism (6), wherein the lifting mechanism (2) is connected in the support (1) in a sliding manner, the correction mechanism (3) is connected to the lifting mechanism (2) in a sliding manner, the rotary ranging mechanism (4) is arranged on the correction mechanism (3), the scraping mechanism (5) is arranged on the rotary ranging mechanism (4), and the flatness testing mechanism (6) is arranged on the scraping mechanism (5);
the lifting mechanism (2) comprises an electric push rod (2-1), a sliding frame (2-2) and a first connecting frame (2-3), wherein the electric push rod (2-1) is connected to the inner bottom surface of the bracket (1) in a sliding manner, the sliding frame (2-2) is fixedly connected to the electric push rod (2-1), and the first connecting frame (2-3) is fixedly arranged at the top of the electric push rod (2-1);
the correcting mechanism (3) comprises a hollow plate (3-1), a first sliding block (3-2), a second sliding block (3-3) and a second connecting frame (3-4), wherein the hollow plate (3-1) is connected to the upper part of the sliding frame (2-2) in a sliding mode, the first sliding block (3-2) is connected to the hollow plate (3-1) in a sliding mode, the second connecting frame (3-4) is fixedly connected to one end of the first sliding block (3-2), the second sliding block (3-3) is fixedly connected to the bottom of the second connecting frame (3-4), and the second sliding block (3-3) is matched with the first connecting frame (2-3) in a sliding mode;
the rotary distance measuring mechanism (4) comprises a slotted disc (4-1), a cross hollow frame (4-2), a rotary rod (4-3), a sliding rod (4-4), a sliding plate (4-5), a first fixed block (4-6) and a tape measure (4-7), wherein the cross hollow frame (4-2) is fixedly arranged on a second connecting frame (3-4), the rotary rod (4-3) is rotationally connected to the middle part of the second connecting frame (3-4), the cross hollow frame (4-2) is rotationally connected with the rotary rod (4-3), the slotted disc (4-1) is fixedly connected to the rotary rod (4-3), the sliding plate (4-5) is internally and slidably connected to the cross hollow frame (4-2), the sliding rod (4-4) is fixedly connected to one side of the sliding plate (4-5), the sliding rod (4-4) is slidably matched with the slotted disc (4-1), the first fixed block (4-6) is fixedly connected to the two sliding plates (4-5), the first fixed block (4-6) is fixedly connected to the first fixed block (4-6), and the first fixed block (4-6) is fixedly connected to one end of the first fixed block (4-6);
the scraping mechanism (5) comprises a supporting frame (5-1), a first sliding rod (5-2), a third sliding block (5-3), a scraper (5-4), a first spring (5-5) and a blocking strip (5-6), wherein one side of a slotted disc (4-1) is fixedly connected with the supporting frame (5-1) in a distributed mode, the supporting frame (5-1) is fixedly connected with the first sliding rod (5-2), the first sliding rod (5-2) is connected with the third sliding block (5-3) in a sliding mode, the scraper (5-4) is fixedly connected with the third sliding block (5-3), a first spring (5-5) is connected between the third sliding block (5-3) and the supporting frame (5-1), a pair of blocking strips (5-6) are fixedly connected with the first fixed block (4-6), two blocking strips (5-6) are fixedly connected with the second connecting frame (3-4), and the blocking strips (5-6) are in contact with the scraper (5-4) mutually;
the flatness testing mechanism (6) further comprises a second fixing block (6-1), a second spring (6-2), a sliding bar (6-3), a fourth sliding block (6-4) and a second sliding bar (6-5), the second fixing block (6-1) is fixedly connected to the third sliding block (5-3), the sliding bar (6-3) is connected to the third sliding block (5-3) in a sliding mode, the fourth sliding block (6-4) is fixedly connected to the sliding bar (6-3), the second spring (6-2) is connected between the fourth sliding block (6-4) and the second fixing block (6-1), the second sliding bar (6-5) is connected to the second fixing block (6-1) in a sliding mode, and one end of the fourth sliding block (6-4) is fixedly connected to the second sliding bar (6-5).
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| CN202110008901.5A CN112629373B (en) | 2021-01-05 | 2021-01-05 | Pipeline internal diameter and flatness accurate measurement device capable of automatically adjusting bracket position |
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| CN202110008901.5A CN112629373B (en) | 2021-01-05 | 2021-01-05 | Pipeline internal diameter and flatness accurate measurement device capable of automatically adjusting bracket position |
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| CN113357994B (en) * | 2021-06-30 | 2022-01-18 | 江苏汉诺威铸业有限公司 | Automatic detection device for internal flatness of ultrathin metal pipe fitting |
| CN114166100B (en) * | 2021-12-01 | 2023-09-22 | 浙江宏宝项目管理咨询有限公司 | Flatness detection device for engineering supervision and application method thereof |
| CN118463770A (en) * | 2024-05-16 | 2024-08-09 | 江苏高欣石英科技有限公司 | Online detection device for diameter error of quartz expanded tube |
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| CN110926407A (en) * | 2019-11-25 | 2020-03-27 | 中国十七冶集团有限公司 | Remote control measurement system and use method |
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| CH617506A5 (en) * | 1977-04-07 | 1980-05-30 | Tesa Sa | |
| JPS61128102A (en) * | 1984-11-27 | 1986-06-16 | Mitsubishi Plastics Ind Ltd | Inside diameter of pipe measuring apparatus |
| CN102243063B (en) * | 2011-04-14 | 2013-03-27 | 华中科技大学 | Concrete bridge bottom crack detecting device |
| CN204154223U (en) * | 2014-10-31 | 2015-02-11 | 宁波思明汽车科技有限公司 | A kind of automobile appliance special for detecting of special-shaped connecting pipe |
| CN104677241B (en) * | 2015-03-13 | 2017-08-11 | 重庆巨龙管业有限公司 | PCCP pipe diameter measuring devices |
| CN205002722U (en) * | 2015-09-25 | 2016-01-27 | 一汽通用红塔云南汽车制造有限公司 | Utensil is tested in special use of sealed face of awl in pipe fitting tip |
| CN107462140A (en) * | 2017-06-19 | 2017-12-12 | 中交二航局第四工程有限公司安徽分公司 | A kind of equipment and its application method of the inner-walls of duct of detection in real time |
| CN211234238U (en) * | 2020-01-03 | 2020-08-11 | 天津市健通辉包装制品股份有限公司 | Paper tube inner diameter detection device |
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| CN110926407A (en) * | 2019-11-25 | 2020-03-27 | 中国十七冶集团有限公司 | Remote control measurement system and use method |
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