CN113109431B - Improve metal screwed pipe vortex finder auxiliary device of inspection accuracy - Google Patents
Improve metal screwed pipe vortex finder auxiliary device of inspection accuracy Download PDFInfo
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- CN113109431B CN113109431B CN202110416393.4A CN202110416393A CN113109431B CN 113109431 B CN113109431 B CN 113109431B CN 202110416393 A CN202110416393 A CN 202110416393A CN 113109431 B CN113109431 B CN 113109431B
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- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000007689 inspection Methods 0.000 title claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000033228 biological regulation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention provides an auxiliary device for a metal threaded pipe eddy current flaw detector for improving inspection accuracy, which belongs to the technical field of metal threaded pipe flaw detectors and comprises chucks, wherein the chucks are symmetrically arranged, winding devices and central limiting grooves are respectively arranged on the chucks which are symmetrically arranged, the central limiting grooves are arranged at one end of the chucks which are opposite, clamping balls are movably arranged in the central limiting grooves, track ropes corresponding to movable seats are connected between the clamping balls, and expansion plates are uniformly connected on the chucks. This improve metal screwed pipe vortex fault detector auxiliary device of inspection accuracy through chuck, expansion board, track rope, card ball, center restriction inslot, cardboard, tighten up the use of restriction piece and tightening degree unification, can prevent effectively that the coil from moving in the screwed pipe in the testing process from producing the deviation and reducing the accuracy of testing result, very big improvement the accuracy of testing result and the application scope of device, have portable's advantage simultaneously.
Description
Technical Field
The invention relates to the technical field of metal threaded pipe flaw detection instruments, in particular to an auxiliary device of a metal threaded pipe eddy current flaw detector for improving inspection accuracy.
Background
The quality of a metal threaded pipe needs to be checked before the metal threaded pipe is put into use, wherein eddy current flaw detection is one of important means for detecting the surface defects of the metal threaded pipe, mainly comprises the steps of approaching a conductor to a coil which is electrified with alternating current, establishing an alternating magnetic field by the coil, generating electromagnetic induction with the alternating magnetic field through the conductor, establishing eddy currents in the conductor, changing the strength of an original magnetic field by utilizing the magnetic field generated by the eddy currents so as to change the voltage and impedance of the coil, detecting the surface defects of the metal threaded pipe by the principle, particularly detecting the inner surface defects of the metal threaded pipe, and detecting the inner surface of the metal threaded pipe by combining an interpolation coil with an eddy current flaw detector.
However, when the internal coil is combined with the eddy current flaw detector to detect the flaw on the inner surface of the metal threaded pipe, the accuracy of the flaw detection result is often reduced due to the deviation generated in the moving process of the coil in the metal threaded pipe, meanwhile, the degree of the movement deviation is relatively improved along with the increase of the length of the metal threaded pipe, and the internal coil is generally relatively fixed, namely, the movable supporting rod and other parts of the internal coil are generally fixedly arranged, so that the application range of the internal coil is relatively low, and the internal coil is inconvenient to carry.
Disclosure of Invention
In order to solve the technical problems, the invention provides an auxiliary device for a metal threaded pipe eddy current flaw detector for improving the inspection accuracy, which is realized by the following specific technical means: the device comprises a chuck, a winding device, a central limiting groove, a traction wire, a movable seat, a coil piece, a clamping ball, a track rope, a clamping plate, an adjusting screw, an expansion plate, an adjusting rod, a clamping block, a unified adjusting piece, a detecting piece, an elastic resetting piece, a tightening degree unified piece and a tightening limiting piece.
The positions and connection relations of the structures are as follows:
The chuck is the symmetry setting, and all be provided with coiling mechanism and central limit groove on the chuck that the symmetry set up, all be provided with the traction wire on the coiling mechanism, be connected with the movable seat between the corresponding one side of traction wire through the chuck, be provided with the coil piece on the movable seat, the one end that is on the back of the chuck is seted up at the central limit groove, and the activity is provided with the card ball in the central limit groove, be connected with the track rope corresponding with the movable seat between the card ball, the piston is provided with the cardboard corresponding with the card ball on the left side of left side chuck, be connected with adjusting screw between cardboard and the chuck, evenly be connected with the expansion board on the chuck, the expansion board internal rotation is connected with the regulation pole, the screw thread cup joints the fixture block on the regulation pole, the fixture block is radial evenly distributed with the central point of chuck as the benchmark, the last rotation of chuck is connected with the unified regulating part corresponding with the regulation pole, the slip grafting has the detecting part on the inside wall of the central limit groove on the right side, be connected with elasticity reset part and the unified piece of degree of tightening.
Preferably, a hanging ring is connected to one end corresponding to the traction wire, a hook corresponding to the hanging ring is connected to the movable seat, the right end of the traction wire on the right side of the movable seat is fixedly connected to the corresponding winding device, the left end of the traction wire on the left side of the movable seat is hung on the corresponding hook through the hanging ring, the right end of the traction wire on the left side of the movable seat is hung on the corresponding hook through the hanging ring, and the left end bypasses the corresponding winding device to extend out of the left chuck, so that the movable seat is convenient to detach and use.
Preferably, the right-hand member fixed connection of track rope is on the card ball on right side, and the left end of track rope passes left side, the movable seat of right side chuck, left card ball and cardboard in proper order and is connected with tightens up the restriction piece, is convenient for adjust and has improved application scope.
Preferably, the clamping plate is provided with clamping grooves corresponding to the clamping balls, the adjusting screw is symmetrically connected between the clamping plate and the chuck, the right end of the adjusting screw is rotationally connected to the chuck, and the left end of the adjusting screw extends out of the left side of the clamping plate to be connected with an adjusting handle.
Preferably, the expansion board is limited to be connected to the corresponding surface of the chuck in a rotating way, the clamping blocks are connected to the corresponding surfaces of the expansion boards on the left chuck and the right chuck in a sliding way, and the application range of the device is improved.
Preferably, the tightening degree unification piece is a pressing on-off switch, so that the detection precision is improved.
The invention has the following beneficial effects:
1. This improve metal screwed pipe vortex finder auxiliary device of inspection accuracy through chuck, adjust pole, fixture block, expansion board, track rope, card ball, in the central restriction groove, the cardboard, tighten up the combination of restriction piece and tightening degree unification and use, forms a wide and accurate coil removal track of application scope, can prevent effectively that the coil from moving in the screwed pipe and producing the deviation and reduce the accuracy of testing result in the testing process, very big improvement the accuracy of testing result, can carry out accurate testing to the screwed pipe of different diameters and different length simultaneously, very big improvement the application scope of the device on the basis of guaranteeing the testing result accuracy, simultaneously when not using, can split to accomodate it, make it portable more.
2. This improve metal screwed pipe vortex finder auxiliary device of inspection accuracy uses through chuck, regulation pole, expansion board, track rope, card ball, tightens up the combination of restriction piece and tightening degree unification, can be automatic carry out accurate setting to track rope and the tightening degree of track rope, corresponding improvement movable seat removes the in-process accuracy, very big improvement the accuracy of testing result.
Drawings
Fig. 1 is a schematic diagram of the overall front structure of the present invention.
Fig. 2 is a schematic diagram of the left chuck connection structure according to the present invention.
FIG. 3 is a schematic diagram of the left chuck connection structure according to the present invention.
Fig. 4 is an enlarged view of fig. 2 a in accordance with the present invention.
Fig. 5 is an enlarged view of B of fig. 3 in accordance with the present invention.
Fig. 6 is a schematic diagram of the connection relationship between the chuck and the expansion board according to the present invention.
In the figure: 1. a chuck; 2. a winding device; 3. a central limiting groove; 4. a traction wire; 5. a movable seat; 6. a coil member; 7. ball clamping; 8. a track rope; 9. a clamping plate; 10. adjusting a screw; 11. an expansion board; 12. an adjusting rod; 13. a clamping block; 14. unified adjusting piece; 15. a detecting member; 16. an elastic reset piece; 17. a tightening degree unification piece; 18. tightening the limiting member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Please refer to fig. 1-6:
The auxiliary device for the metal threaded pipe eddy current flaw detector for improving the inspection accuracy comprises a chuck 1, a winding device 2, a central limiting groove 3, a traction wire 4, a movable seat 5, a coil piece 6, a clamping ball 7, a track rope 8, a clamping plate 9, an adjusting screw 10, an expansion plate 11, an adjusting rod 12, a clamping block 13, a unified adjusting piece 14, a detecting piece 15, an elastic resetting piece 16, a tightening degree unified piece 17 and a tightening limiting piece 18.
The positions and connection relations of the structures are as follows:
The chucks 1 are symmetrically arranged, the chucks 1 which are symmetrically arranged are provided with winding devices 2 and central limiting grooves 3, the winding devices 2 are provided with traction wires 4, a movable seat 5 is connected between one sides of the traction wires 4 corresponding to the chucks 1, one ends of the traction wires 4 corresponding to the traction wires are connected with hanging rings, the movable seat 5 is connected with hooks corresponding to the hanging rings, the right ends of the traction wires 4 on the right side of the movable seat 5 are fixedly connected to the corresponding winding devices 2, the left ends of the traction wires 4 on the left side of the movable seat 5 are hung on the corresponding hooks through the hanging rings, the left ends of the traction wires 4 on the left side of the movable seat 5 are wound outside the corresponding winding devices 2 and extend out of the left side of the chucks 1, the winding devices are convenient to detach and use, the movable seat 5 is provided with coil pieces 6, the central limiting grooves 3 are arranged at one ends of the opposite sides of the chucks 1, the clamping balls 7 are movably arranged in the central limiting grooves 3, the left end of the track rope 8 sequentially passes through the left side of the right chuck 1, the movable seat 5, the left chuck 1, the left clamping ball 7 and the clamping plate 9, the tightening limiting piece 18 is connected between the clamping plate 9 and the clamping plate 1, the application range is convenient to adjust and improved, the adjusting screw 10 is connected between the clamping plate 9 and the clamping plate 1, the clamping plate 9 is provided with clamping grooves corresponding to the clamping balls 7, the adjusting screw 10 is symmetrically connected between the clamping plate 9 and the clamping plate 1, the right end of the adjusting screw 10 is rotationally connected on the clamping plate 1, the left end of the adjusting screw 10 extends out of the clamping plate 9 and is connected with an adjusting handle, the clamping plate 1 is uniformly connected with the expansion plate 11, the expansion board 11 is rotationally connected with an adjusting rod 12, a clamping block 13 is sleeved on the adjusting rod 12 in a threaded manner, the expansion board 11 is connected to the corresponding surface of the chuck 1 in a limited rotation manner, the clamping block 13 is connected to the corresponding surface of the corresponding expansion board 11 on the left chuck 1 and the right chuck 1 in a sliding manner, the clamping block 13 is uniformly distributed in a radial manner by taking the central point of the chuck 1 as a reference, a unified adjusting piece 14 corresponding to the adjusting rod 12 is rotationally connected to the chuck 1, a detecting piece 15 is connected to the inner side wall of the right central limiting groove 3 in a sliding manner in an inserting manner, an elastic reset piece 16 and a tightening degree unified piece 17 are connected between the detecting piece 15 and the side wall of the central limiting groove 3, and the tightening degree unified piece 17 is a pressing on-off switch for improving the detection precision.
Working principle: the auxiliary device for the metal threaded pipe eddy current flaw detector for improving the inspection accuracy comprises the steps of clamping a chuck 1 on the right side on a port on the right side of a threaded pipe before eddy current flaw detection is carried out on the metal threaded pipe, synchronously driving an adjusting rod 12 on the chuck 1 to rotate through a unified adjusting piece 14, driving a clamping block 13 to correspondingly slide along an expansion board 11 under the driving of the adjusting rod 12 in the rotating process of the adjusting rod 12, fixing the chuck 1 on threaded pipes with different diameters through the sliding of the clamping block 13, greatly correspondingly improving the application range of the auxiliary device, synchronously centering and adjusting the chuck 1 and the threaded pipe while fixing the chuck 1 because the clamping block 13 is uniformly and radially distributed by taking the center point of the chuck 1 as a reference, even if the center line of the threaded pipe coincides with the center line of the chuck 1, the left chuck 1 is then ready to be fixed to the left port of the threaded tube in a uniform manner as described above, the right clamping ball 7 of the track rope 8 is clamped in the central limiting groove 3 on the right chuck 1 before being ready to be fixed, the left end of the track rope 8 is connected to the tightening limiting piece 18 through the movable seat 5, the threaded tube, the left chuck 1, the left clamping ball 7 and the clamping plate 9, the left chuck 1 is then fixed to the threaded tube, after being fixed, the adjusting screw 10 is rotated to drive the left clamping ball 7 of the clamping plate 9 to move and stably fix the clamping ball 7 in the corresponding central limiting groove 3, then the tightening limiting piece 18 is started, the tightening limiting piece 18 is matched with the tightening degree unifying piece 17 to be used, for example, if the tightening limiting piece 18 is manually operated, that is, the track rope 8 is tightened by the rotation of the manual tightening shaft, make track rope 8 tightly, when tightening to certain degree, tightening force returns and acts on the card ball 7 on the right side, make the detection spare 15 of card ball 7 extrusion right side center restriction groove 3, make detection spare 15 to center restriction groove 3 inside wall slip, and extrude tightening unified piece 17, use in order to cooperate manual tight axle, here can set up tightening unified piece 17 to pressing sound alarm, can take place the sound when receiving the extrusion and make the operator hear sound and stop tightening, also can set up tightening limit piece 18 into automatic coiling mechanism, tightening unified piece 17 is pressing on-off switch, both electricity links together, with the principle process the same, when tightening unified piece 17 receives the pressure, automatic disconnection automatic coiling mechanism, make the tightening of track rope 8 be in accurate state all the time, corresponding improvement movable seat 5 in the accuracy of measuring result in the removal process, finally, it can carry out the flaw detection device in the sliding of the interior pipe of the tight track rope 8 to take place sound when can take place the sound when receiving the extrusion, the very big diameter of the pipe can be used to the flaw detector, the flaw detection result is not carried out accurately, the flaw detection device is not carried out simultaneously, the flaw detection result is very big, the flaw detection result is not carried out accurately, the flaw detector is not carried out simultaneously, the flaw detector is accurate, the flaw detector is used for the flaw detector is not used for the flaw detector.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an improve metal screwed pipe eddy current flaw detector auxiliary device of inspection accuracy, includes chuck (1), its characterized in that: the chuck (1) is symmetrically arranged, the symmetrically arranged chucks (1) are provided with winding devices (2) and central limiting grooves (3), the winding devices (2) are provided with traction wires (4), movable seats (5) are connected between one sides of the chucks (1) corresponding to the traction wires (4), coil pieces (6) are arranged on the movable seats (5), the central limiting grooves (3) are formed in one ends of the chucks (1) which are opposite, clamping balls (7) are movably arranged in the central limiting grooves (3), track ropes (8) corresponding to the movable seats (5) are connected between the clamping balls (7), a piston on the left side of the left side chuck (1) is provided with clamping plates (9) corresponding to the clamping balls (7), adjusting screws (10) are connected between the clamping plates (9) and the chucks (1), expansion plates (11) are uniformly connected on the chucks (1), adjusting rods (12) are rotationally connected with adjusting rods (12) in a sleeved mode through threads, the clamping blocks (13) take the central points of the chucks (1) as radial points, the corresponding adjusting rods (12) are uniformly distributed on the corresponding adjusting rods (14), the inner side wall of the right central limiting groove (3) is connected with a detection piece (15) in a sliding insertion mode, and an elastic reset piece (16) and a tightening degree unifying piece (17) are connected between the detection piece (15) and the side wall of the central limiting groove (3).
2. The auxiliary device for improving inspection accuracy of a metal threaded pipe eddy current flaw detector according to claim 1, wherein: the novel winding device is characterized in that hanging rings are connected to corresponding ends of the traction wires (4), hooks corresponding to the hanging rings are connected to the movable base (5), the right ends of the traction wires (4) on the right side of the movable base (5) are fixedly connected to the corresponding winding devices (2), the left ends of the traction wires (4) on the left side of the movable base (5) are connected to the corresponding hooks through the hanging rings, the right ends of the traction wires (4) on the left side of the movable base (5) are connected to the corresponding hooks through the hanging rings, and the left ends of the traction wires bypass the corresponding winding devices (2) and extend out of the left chuck (1).
3. The auxiliary device for improving inspection accuracy of a metal threaded pipe eddy current flaw detector according to claim 1, wherein: the right end of the track rope (8) is fixedly connected to the clamping ball (7) on the right side, and the left end of the track rope (8) sequentially penetrates through the left side of the right chuck (1), the movable seat (5), the left chuck (1), the left clamping ball (7) and the clamping plate (9) to be connected with a tightening limiting piece (18).
4. The auxiliary device for improving inspection accuracy of a metal threaded pipe eddy current flaw detector according to claim 1, wherein: clamping grooves corresponding to the clamping balls (7) are formed in the clamping plates (9), adjusting screws (10) are symmetrically connected between the clamping plates (9) and the chuck (1), the right ends of the adjusting screws (10) are rotatably connected to the chuck (1), and the left ends of the adjusting screws (10) extend out of the left sides of the clamping plates (9) to be connected with adjusting handles.
5. The auxiliary device for improving inspection accuracy of a metal threaded pipe eddy current flaw detector according to claim 1, wherein: the expansion board (11) is limited to be connected to the corresponding surface of the chuck (1) in a rotating way, and the clamping blocks (13) are connected to the opposite surfaces of the corresponding expansion boards (11) on the left chuck (1) and the right chuck in a sliding way.
6. The auxiliary device for improving inspection accuracy of a metal threaded pipe eddy current flaw detector according to claim 1, wherein: the tightening degree unification piece (17) is a pressing on-off switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416393.4A CN113109431B (en) | 2021-04-19 | 2021-04-19 | Improve metal screwed pipe vortex finder auxiliary device of inspection accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416393.4A CN113109431B (en) | 2021-04-19 | 2021-04-19 | Improve metal screwed pipe vortex finder auxiliary device of inspection accuracy |
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| Publication Number | Publication Date |
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| CN113109431A CN113109431A (en) | 2021-07-13 |
| CN113109431B true CN113109431B (en) | 2024-05-03 |
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|---|---|---|---|---|
| JPH063331A (en) * | 1992-06-22 | 1994-01-11 | Hitachi Ltd | Eddy-current flaw detector |
| EP0802094A2 (en) * | 1996-04-19 | 1997-10-22 | TAKATA (EUROPE) VEHICLE SAFETY TECHNOLOGY GmbH | Safety belt return anchor height adjustment |
| JPH11325809A (en) * | 1998-05-21 | 1999-11-26 | Nkk Corp | Welding bead center position detector |
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| JP2008241449A (en) * | 2007-03-27 | 2008-10-09 | Kobe Steel Ltd | Eddy current flaw detection apparatus |
| RU156617U1 (en) * | 2015-02-25 | 2015-11-10 | Акционерное общество "Государственный ракетный центр имени академика В.П. Макеева" | INSTALLATION FOR AUTOMATED ULTRASONIC CONTROL OF PREPARATIONS WITH A CONCENTED SPHERICAL SURFACE |
| CN206248611U (en) * | 2016-12-16 | 2017-06-13 | 宝莱不锈钢科技(昆山)有限公司 | A kind of offline eddy current inspection equipment of automatic Pipeline easy to use |
| CN207387625U (en) * | 2017-10-31 | 2018-05-22 | 芜湖保泰精密工具制造有限公司 | Bar segment difference linear measure longimetry control device |
| CN110031542A (en) * | 2019-04-26 | 2019-07-19 | 射阳县智能探伤设备有限公司 | A kind of magnaflux convenient for adjusting |
| CN210180981U (en) * | 2019-04-01 | 2020-03-24 | 潍坊图歌电子科技有限公司 | Metal nondestructive flaw detector |
| CN111746585A (en) * | 2020-07-06 | 2020-10-09 | 林美华 | Rail flaw detection device for rail transit |
| CN112014540A (en) * | 2019-05-29 | 2020-12-01 | 广东省功夫建设工程质量检测有限公司 | Automatic detection frame for metal pipeline flaw detector |
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2021
- 2021-04-19 CN CN202110416393.4A patent/CN113109431B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063331A (en) * | 1992-06-22 | 1994-01-11 | Hitachi Ltd | Eddy-current flaw detector |
| EP0802094A2 (en) * | 1996-04-19 | 1997-10-22 | TAKATA (EUROPE) VEHICLE SAFETY TECHNOLOGY GmbH | Safety belt return anchor height adjustment |
| JPH11325809A (en) * | 1998-05-21 | 1999-11-26 | Nkk Corp | Welding bead center position detector |
| JP2002202291A (en) * | 2000-12-27 | 2002-07-19 | Ishikawajima Harima Heavy Ind Co Ltd | Eddy current examination probe for thread part and holding device of probe |
| JP2006162540A (en) * | 2004-12-10 | 2006-06-22 | Sumitomo Metal Ind Ltd | Through type eddy current tester |
| JP2008241449A (en) * | 2007-03-27 | 2008-10-09 | Kobe Steel Ltd | Eddy current flaw detection apparatus |
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| CN207387625U (en) * | 2017-10-31 | 2018-05-22 | 芜湖保泰精密工具制造有限公司 | Bar segment difference linear measure longimetry control device |
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| Publication number | Publication date |
|---|---|
| CN113109431A (en) | 2021-07-13 |
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