CN113252786B - Steel plate handheld ultrasonic detection device - Google Patents
Steel plate handheld ultrasonic detection device Download PDFInfo
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- CN113252786B CN113252786B CN202110635333.1A CN202110635333A CN113252786B CN 113252786 B CN113252786 B CN 113252786B CN 202110635333 A CN202110635333 A CN 202110635333A CN 113252786 B CN113252786 B CN 113252786B
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- sliding
- bracket
- transverse moving
- cross beam
- vertical
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 abstract description 7
- 238000009628 steelmaking Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a steel plate handheld ultrasonic detection device, which comprises a sliding left bracket (2), a cross beam (1) and a sliding right bracket (3) which are matched with each other, wherein a vertical displacement bracket (9), a vertical guide rail (10), a transverse moving bracket (11) and a scale ruler (18) are sequentially arranged on the cross beam (1), an adjusting screw (14) is connected between a left vertical plate (12) and a right vertical plate (13) at two ends of the transverse moving bracket (11), a probe left clamping block (15) and a probe right clamping block (16) which are matched with each other are connected on the adjusting screw (14), and the two clamping blocks are connected with a transverse moving guide rail (17) connected on the transverse moving bracket (11). The invention has the advantages of small detection blind area, strong resolution, high detection sensitivity and high detection speed, optimizes the steel plate detection procedure, improves the production efficiency, enhances the quality control of the steel plate and provides powerful guarantee for the improvement of the quality of steel binding and steelmaking.
Description
Technical Field
The invention relates to the technical field of steel plate nondestructive testing equipment, in particular to a handheld ultrasonic testing device for a steel plate.
Background
With the rapid development of the economy in China, the steel plate products are more and more demanded by various industries, and the requirements on the quality of the steel plate products are more and more strict. In the process of steel binding and steelmaking, in order to control the quality of the steel sheet, 100% ultrasonic TOFD detection is required for the interior of the steel sheet. At present, on-line ultrasonic detection of steel plates is frequently alarmed, manual re-detection is needed, the conventional manual re-detection is difficult to reach detection requirements and detection efficiency, and batch steel plates are easy to be unqualified due to untimely re-detection.
Disclosure of Invention
The invention aims to solve the problems of low efficiency and inaccurate detection result of the conventional manual detection and re-detection, and provides a steel plate handheld ultrasonic detection device which has the advantages of small detection blind area, strong resolution, high detection sensitivity and high detection speed, optimizes the steel plate detection procedure, improves the production efficiency, enhances the quality control of the steel plate, and provides powerful guarantee for improving the quality of steel binding and steelmaking.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a steel sheet hand-held type ultrasonic detection device, includes the left socle that slides, crossbeam and the right branch that slides that mutually support, slides left socle and slide right branch and connect in parallel in the both sides of crossbeam, and the left end of crossbeam connects a left baffle, the right-hand member and connects a right baffle for be used for respectively to slide left socle and slide right branch left and right spacing;
The upper end of the sliding left bracket is fixed with a left handle, the upper end of the sliding right bracket is fixed with a right handle, and the lower parts of the sliding left bracket and the sliding right bracket are connected with a group of bearing wheels;
The transverse beam is also connected with a vertical displacement bracket which is arranged between the sliding left bracket and the sliding right bracket and forms sliding guide fit with the transverse beam so as to be used for moving left and right along the transverse beam;
The front surface of the vertical displacement bracket is connected with a vertical sliding rail, and the vertical sliding rail is connected with a transverse moving bracket which forms sliding guide fit for the transverse moving bracket to move up and down along the vertical sliding rail;
two ends of the transverse moving support are respectively connected with a left vertical plate and a right vertical plate, an adjusting screw rod is connected between the left vertical plate and the right vertical plate, and the adjusting screw rod and the cross beam are mutually and horizontally arranged;
the probe left clamping block and the probe right clamping block which are matched with each other are connected to the adjusting screw rod, a transverse moving guide rail which is horizontal to the adjusting screw rod is fixed on the transverse moving support, the probe left clamping block and the probe right clamping block are both connected to the transverse moving guide rail, and form sliding guide matching with the transverse moving guide rail, so that the clamping blocks can move left and right along the guide rail under the adjustment of the screw rod;
the beam is also connected with a graduated ruler which is parallel to the axis of the beam so as to observe the moving distance of the device on the vertical displacement bracket driven by the vertical displacement bracket on the beam.
Further, the sliding left bracket and the sliding right bracket are the same in size and shape, and are perpendicular to the cross beam.
Further, the middle shaft of the bearing wheel and the cross beam are arranged in parallel.
Further, a clamping groove is formed in the cross beam, the clamping groove is parallel to the axis of the cross beam, the back face of the vertical displacement bracket is in a dovetail groove type, and the vertical displacement bracket is mutually embedded with the clamping groove of the cross beam through the dovetail groove so as to be used for completing left-right sliding of the vertical displacement bracket on the cross beam.
Further, the back of the transverse moving support is provided with a V-shaped clamping groove, and the transverse moving support is mutually connected and matched with the vertical sliding rail through the V-shaped clamping groove, so that the longitudinal movement of the transverse moving support on the vertical sliding rail is completed.
Further, the left vertical plate and the right vertical plate are L-shaped plates and are parallel to each other.
Further, the sliding left bracket comprises a horizontal mounting table at the upper part and a triangular bracket at the lower part, the left handle is connected with the horizontal mounting table through counter bore screws, the cross beam can penetrate through the middle part of the triangular bracket, and the arrangement of the sliding right bracket is the same as that of the sliding left bracket.
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) The vertical displacement module is arranged in the middle of the clamping groove cross beam, the vertical displacement bracket is assembled on the cross beam in a dovetail groove mode and can slide along the clamping groove to adjust the position, and the front screw of the vertical displacement bracket is connected with the vertical sliding rail, so that the height adjustment of the ultrasonic probe in the vertical direction is realized;
(2) The transverse displacement module is arranged in the middle of the vertical sliding rail, and is characterized in that the transverse displacement bracket is assembled on the vertical sliding rail through a V-shaped clamping groove, so that the longitudinal adjustment of the transverse displacement bracket on the vertical sliding rail is realized;
(3) The left clamping block and the right clamping block of the probe are connected by the adjusting screw rod, and the bottoms of the clamping blocks are all provided with sliding grooves to be connected to the transverse guide rail so as to realize transverse sliding adjustment of the probe;
(4) The detection device reduces labor intensity, and has the advantages of small detection blind area, strong resolution, high detection sensitivity and high detection speed;
(5) The steel plate detection process is optimized, the production efficiency is improved, the quality control of the steel plate is enhanced, and powerful guarantee is provided for the improvement of the quality of steel binding and steelmaking.
Drawings
FIG. 1 is a perspective view of a steel plate hand-held ultrasonic detection device according to the present invention;
FIG. 2 is a front view of a steel plate hand-held ultrasonic detection device of the present invention;
FIG. 3 is a side view of a steel plate hand-held ultrasonic detection device of the present invention;
fig. 4 is a plan view of a steel plate hand-held ultrasonic detection device according to the present invention.
Detailed Description
Example 1
In order to make the present invention more clear, a steel plate hand-held ultrasonic detection device of the present invention will be further described, and the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1, a steel plate handheld ultrasonic detection device includes a sliding left bracket 2, a beam 1 and a sliding right bracket 3 which are mutually matched, and is characterized in that:
Referring to fig. 1-3, a sliding left bracket 2 and a sliding right bracket 3 are connected in parallel to two sides of a cross beam 1, the sliding left bracket 2 and the sliding right bracket 3 are the same in size and shape, and are arranged perpendicular to the cross beam 1;
The left end of the cross beam 1 is connected with a left baffle 4, and the right end of the cross beam is connected with a right baffle 5, so as to be used for limiting the sliding left bracket 2 and the sliding right bracket 3 left and right respectively;
A left lifting handle 6 is fixed at the upper end of the sliding left support 2, a right lifting handle 7 is fixed at the upper end of the sliding right support 3, the lower parts of the sliding left support 2 and the sliding right support 3 are connected with a group of bearing wheels 8, and the middle shafts of the bearing wheels 8 are mutually parallel to the cross beam 1;
referring to fig. 1 and 4, the sliding left bracket 2 and the sliding right bracket 3 each comprise an upper horizontal mounting table 2a and a lower triangular bracket 2b, the left handle 6 and the right handle 7 are respectively connected with the horizontal mounting table 2a through counter bore screws 19, and the cross beam 1 can pass through the middle part of the triangular bracket 2 b;
Referring to fig. 1-3, a vertical displacement bracket 9 is further connected to the cross beam 1, the vertical displacement bracket 9 is arranged between the sliding left bracket 2 and the sliding right bracket 3, and forms sliding guiding fit with the cross beam 1, a clamping groove 1a is formed in the cross beam 1, the clamping groove 1a is parallel to the axis of the cross beam 1, the back surface of the vertical displacement bracket 9 is in a dovetail groove type, and the vertical displacement bracket 9 is mutually embedded with the clamping groove 1a of the cross beam 1 through the dovetail groove so as to be used for completing left-right sliding of the vertical displacement bracket 9 on the cross beam 1;
The front surface of the vertical displacement bracket 9 is connected with a vertical sliding rail 10, the vertical sliding rail 10 is connected with a transverse moving bracket 11, the vertical sliding rail 10 and the transverse moving bracket 11 form sliding guiding cooperation, the back surface of the transverse moving bracket 11 is provided with a V-shaped clamping groove, and the transverse moving bracket 11 is mutually connected with the vertical sliding rail 10 through the V-shaped clamping groove so as to be used for moving the transverse moving bracket up and down along the vertical sliding rail;
The two ends of the transverse moving bracket 11 are respectively connected with a left vertical plate 12 and a right vertical plate 13, the left vertical plate 12 and the right vertical plate 13 are L-shaped plates and are parallel to each other, an adjusting screw rod 14 is connected between the left vertical plate 12 and the right vertical plate 13, and the adjusting screw rod 14 and the cross beam 1 are arranged horizontally;
The adjusting screw rod 14 is connected with a pair of mutually matched probe left clamping block 15 and probe right clamping block 16, a transverse moving guide rail 17 which is horizontal to the adjusting screw rod 14 is fixed on the transverse moving bracket 11, the probe left clamping block 15 and the probe right clamping block 16 are connected to the transverse moving guide rail 17, and the two clamping blocks and the transverse moving guide rail 17 form sliding guide fit so that the clamping blocks can move left and right along the guide rail under the adjustment of the screw rod;
The beam 1 is also connected with a graduated ruler 18 which is parallel to the axis of the beam, so as to observe the moving distance of the device on the beam driven by the vertical displacement bracket.
In the invention, probes are firstly arranged in a left probe clamping block and a right probe clamping block of the detection device and are fixed through screw rods so as to ensure that the two probes are on the same horizontal line, then the detection device is arranged on the surface of a steel plate for longitudinal or transverse scanning, sound beams enter the steel plate through a coupling agent, and the two probes detect the interior of the steel plate in a one-to-one manner so as to ensure that 100% of defects in the steel plate are detected.
The device is used for ultrasonic hand detection of the steel plate, reduces labor intensity in the use process, and has the characteristics of small detection blind area, strong resolution, high detection sensitivity, high detection speed and the like; by using the ultrasonic TOFD method to detect the steel plate, the detection procedure of the steel plate is optimized, the production efficiency is improved, the quality control of the steel plate is enhanced, and a powerful guarantee is provided for the improvement of the quality of steel binding and steelmaking.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (5)
1. The utility model provides a steel sheet hand-held type ultrasonic detection device, includes mutually supporting slide left socle (2), crossbeam (1) and slide right branch frame (3), its characterized in that:
The sliding left support (2) and the sliding right support (3) are connected in parallel to the two sides of the cross beam (1), the left end of the cross beam (1) is connected with a left baffle (4), and the right end of the cross beam is connected with a right baffle (5);
A left lifting handle (6) is fixed at the upper end of the sliding left support (2), a right lifting handle (7) is fixed at the upper end of the sliding right support (3), and a group of bearing wheels (8) are connected to the lower parts of the sliding left support (2) and the sliding right support (3);
The cross beam (1) is also connected with a vertical displacement bracket (9), and the vertical displacement bracket (9) is arranged between the sliding left bracket (2) and the sliding right bracket (3) and forms sliding guide fit with the cross beam (1);
The transverse beam (1) is provided with a clamping groove (1 a), the clamping groove (1 a) is parallel to the axis of the transverse beam (1), the back surface of the vertical displacement bracket (9) is in a dovetail groove type, and the vertical displacement bracket (9) is mutually embedded with the clamping groove (1 a) of the transverse beam (1) through the dovetail groove;
the front surface of the vertical displacement bracket (9) is connected with a vertical sliding rail (10), the vertical sliding rail (10) is connected with a transverse moving bracket (11) which forms sliding guiding fit, the back surface of the transverse moving bracket (11) is provided with a V-shaped clamping groove, and the transverse moving bracket (11) is connected with the vertical sliding rail (10) through the V-shaped clamping groove;
Two ends of the transverse moving support (11) are respectively connected with a left vertical plate (12) and a right vertical plate (13), an adjusting screw rod (14) is connected between the left vertical plate (12) and the right vertical plate (13), and the adjusting screw rod (14) and the cross beam (1) are mutually horizontally arranged;
The adjusting screw rod (14) is connected with a pair of mutually matched probe left clamping blocks (15) and probe right clamping blocks (16), a transverse moving guide rail (17) which is horizontal to the adjusting screw rod (14) is fixed on the transverse moving support (11), the probe left clamping blocks (15) and the probe right clamping blocks (16) are connected to the transverse moving guide rail (17), and the probe left clamping blocks and the probe right clamping blocks and the transverse moving guide rail (17) form sliding guide fit;
the beam (1) is also connected with a graduated straight ruler (18) which is parallel to the axis of the beam.
2. The steel plate hand-held ultrasonic detection device according to claim 1, wherein:
the sliding left bracket (2) and the sliding right bracket (3) are the same in size and shape and are perpendicular to the cross beam (1).
3. The steel plate hand-held ultrasonic detection device according to claim 1 or 2, wherein:
the middle shaft of the bearing wheel (8) and the cross beam (1) are arranged in parallel.
4. The steel plate hand-held ultrasonic detection device according to claim 1 or 2, wherein:
the left vertical plate (12) and the right vertical plate (13) are L-shaped plates and are parallel to each other.
5. The steel plate hand-held ultrasonic detection device according to claim 1 or 2, wherein:
The sliding left support (2) comprises a horizontal mounting table (2 a) on the upper portion and a triangular support (2 b) on the lower portion, the left handle (6) is connected with the horizontal mounting table (2 a) through counter bore screws (19), the cross beam (1) can penetrate through the middle of the triangular support (2 b), and the arrangement of the sliding right support (3) is identical to that of the sliding left support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635333.1A CN113252786B (en) | 2021-06-08 | 2021-06-08 | Steel plate handheld ultrasonic detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635333.1A CN113252786B (en) | 2021-06-08 | 2021-06-08 | Steel plate handheld ultrasonic detection device |
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| Publication Number | Publication Date |
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| CN113252786A CN113252786A (en) | 2021-08-13 |
| CN113252786B true CN113252786B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110635333.1A Active CN113252786B (en) | 2021-06-08 | 2021-06-08 | Steel plate handheld ultrasonic detection device |
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| CN113916365B (en) * | 2021-10-14 | 2023-10-31 | 广东电网有限责任公司东莞供电局 | Transmission type audio auscultation device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6491054A (en) * | 1987-10-01 | 1989-04-10 | Takenaka Komuten Co | Non-destructive flaw detector for existing piping |
| CN101614703A (en) * | 2009-07-28 | 2009-12-30 | 晋西车轴股份有限公司 | Automated ultrasonic flaw detecting device for track traffic vehicle axles |
| RU114163U1 (en) * | 2011-10-10 | 2012-03-10 | Открытое Акционерное Общество "Государственный Ракетный Центр Имени Академика В.П. Макеева" | DEVICE FOR ULTRASONIC CONTROL OF RING WELDED CONNECTIONS BY MANUAL LONGITUDINAL-CROSS-SCAN |
| CN204101521U (en) * | 2014-10-17 | 2015-01-14 | 中国石油集团渤海石油装备制造有限公司 | Large wall thickness steel tube weld joint ultrasonic tandem pick-up unit |
| CN205193020U (en) * | 2015-12-03 | 2016-04-27 | 北京有色金属研究总院 | Magnesium alloy cylinder ingot casting water logging formula ultrasonic inspection device |
| CN106395235A (en) * | 2016-08-31 | 2017-02-15 | 株洲中车天力锻业有限公司 | Feeding and discharging equipment for water-immersed ultrasonic flaw detection equipment for direct-axis component |
| CN217237878U (en) * | 2021-06-08 | 2022-08-19 | 南京钢铁股份有限公司 | Steel sheet hand-held type ultrasonic detection device |
-
2021
- 2021-06-08 CN CN202110635333.1A patent/CN113252786B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6491054A (en) * | 1987-10-01 | 1989-04-10 | Takenaka Komuten Co | Non-destructive flaw detector for existing piping |
| CN101614703A (en) * | 2009-07-28 | 2009-12-30 | 晋西车轴股份有限公司 | Automated ultrasonic flaw detecting device for track traffic vehicle axles |
| RU114163U1 (en) * | 2011-10-10 | 2012-03-10 | Открытое Акционерное Общество "Государственный Ракетный Центр Имени Академика В.П. Макеева" | DEVICE FOR ULTRASONIC CONTROL OF RING WELDED CONNECTIONS BY MANUAL LONGITUDINAL-CROSS-SCAN |
| CN204101521U (en) * | 2014-10-17 | 2015-01-14 | 中国石油集团渤海石油装备制造有限公司 | Large wall thickness steel tube weld joint ultrasonic tandem pick-up unit |
| CN205193020U (en) * | 2015-12-03 | 2016-04-27 | 北京有色金属研究总院 | Magnesium alloy cylinder ingot casting water logging formula ultrasonic inspection device |
| CN106395235A (en) * | 2016-08-31 | 2017-02-15 | 株洲中车天力锻业有限公司 | Feeding and discharging equipment for water-immersed ultrasonic flaw detection equipment for direct-axis component |
| CN217237878U (en) * | 2021-06-08 | 2022-08-19 | 南京钢铁股份有限公司 | Steel sheet hand-held type ultrasonic detection device |
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