CN113916164A - Ultrasonic measuring device for automatically detecting wall thickness of thin-wall pipe - Google Patents
Ultrasonic measuring device for automatically detecting wall thickness of thin-wall pipe Download PDFInfo
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- CN113916164A CN113916164A CN202111103909.6A CN202111103909A CN113916164A CN 113916164 A CN113916164 A CN 113916164A CN 202111103909 A CN202111103909 A CN 202111103909A CN 113916164 A CN113916164 A CN 113916164A
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- 238000005259 measurement Methods 0.000 claims abstract description 71
- 238000007667 floating Methods 0.000 claims abstract description 70
- 239000000523 sample Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005267 amalgamation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
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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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- Radar, Positioning & Navigation (AREA)
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- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses an ultrasonic measuring device for automatically detecting the wall thickness of a thin-wall pipe, wherein a lifting cylinder is arranged on a cylinder fixing plate, and a connecting frame is arranged on the lifting cylinder; the upper part of the connecting frame is used for fixing the cylinder bracket, and the lower part of the connecting frame is connected with a measuring fixing frame arranged in the water tank; the pressing cylinder is arranged on the cylinder bracket, and the pressing block is arranged on an output shaft of the pressing cylinder; the buffer block is fixedly connected with the pressing block; the floating measurement module is positioned in the water tank and connected with the measurement fixing frame, and the lifting cylinder drives the floating measurement module to move up and down through the connecting frame and the measurement fixing frame; the workpiece to be measured is arranged between the floating measurement module and the buffer block, the cylindrical positioning block on the floating measurement module is contacted with the workpiece after the lifting cylinder lifts, the pressing cylinder extends out, and the workpiece is pressed through the pressing block and the buffer block, so that the ultrasonic probe on the floating measurement module is utilized to realize stable measurement of wall thickness.
Description
Technical Field
The invention relates to the field of ultrasonic measurement, in particular to an ultrasonic measurement device for automatically detecting the wall thickness of a thin-wall pipe.
Background
The thin-wall pipe has wide application in the fields of aerospace, nuclear industry, automobiles and the like, the quality requirement on the pipe is very strict, the wall thickness uniformity of the thin-wall aluminum pipe is very high, and in order to ensure the wall thickness uniformity of the thin-wall aluminum pipe, a proper detection method is firstly selected to realize the automatic detection of the wall thickness of the thin-wall aluminum pipe.
At present, the wall thickness of seamless pipes is detected by a plurality of methods, and the mature thickness measuring methods comprise an eddy current method thickness measuring method, a laser method thickness measuring method, a magnetic leakage thickness measuring method, a ray thickness measuring method and an ultrasonic method thickness measuring method. Compared with other nondestructive detection technologies, ultrasonic detection has the advantages of high sensitivity, safety, reliability and the like, most domestic continuous thickness gauges are adopted to carry out detection through a manual point-by-point measurement method, the measured data are unstable, the measurement efficiency is low, the centering effect is poor, and the precision is difficult to guarantee.
Disclosure of Invention
The invention aims to provide an ultrasonic measuring device for automatically detecting the wall thickness of a thin-wall pipe, which is used for solving the defects of the traditional manual measuring method.
In order to realize the task, the invention adopts the following technical scheme:
the utility model provides an ultrasonic measurement device for thin wall pipe wall thickness automated inspection, includes unsteady measuring module, buffer block, compact heap, compresses tightly cylinder, cylinder support, link, lift cylinder, cylinder fixed plate, measurement mount, wherein:
the lifting cylinder is arranged on the cylinder fixing plate, and the connecting frame is arranged on the lifting cylinder; the upper part of the connecting frame is used for fixing the cylinder bracket, and the lower part of the connecting frame is connected with a measuring fixing frame arranged in the water tank; the pressing cylinder is installed on the cylinder support, an output shaft of the pressing cylinder is vertically arranged downwards, and the pressing block is installed on the output shaft of the pressing cylinder;
the buffer block is fixedly connected with the pressing block; the floating measurement module is positioned in the water tank and connected with the measurement fixing frame, and the lifting cylinder drives the floating measurement module to move up and down through the connecting frame and the measurement fixing frame; the workpiece to be measured is arranged between the floating measurement module and the buffer block, the cylindrical positioning block on the floating measurement module is contacted with the workpiece after the lifting cylinder lifts, the pressing cylinder extends out, and the workpiece is pressed through the pressing block and the buffer block, so that the ultrasonic probe on the floating measurement module is utilized to realize stable measurement of wall thickness.
Furthermore, the lower end of the pressing block is provided with a pair of inclined planes of which the end parts are connected in a splayed shape, and the buffer block is fixed on the inclined planes.
Further, the floating measurement module comprises a clean plate and a floating plate;
the floating measurement module is fixed on the measurement fixing frame through the static plate; the floating plate is arranged above the clean plate, a guide shaft is fixed on the floating plate, and the guide shaft can float up and down along a first unthreaded hole formed in the static plate; the guide shaft is sleeved with a spring, and the upper end and the lower end of the spring are respectively connected with the floating plate and the clean plate;
and the cylindrical positioning block and the ultrasonic probe are arranged on the upper surface of the floating plate.
Furthermore, a probe bracket is fixed at the bottom of the floating plate, and a second unthreaded hole, a counter bore and a threaded hole are formed in the probe bracket; wherein:
the second unthreaded hole is positioned in the middle of the probe bracket, penetrates through the upper surface and the lower surface of the probe bracket and is used for installing the ultrasonic probe; the counter bore is formed in one side of the second unthreaded hole and is matched with the threaded hole in the floating plate to fix the probe bracket; the counter bore is arranged on the side face of the probe support, the threaded hole is arranged in the counter bore, the counter bore and the threaded hole are used for fastening the ultrasonic probe, the ultrasonic probe is arranged upwards, and the distance between the probe and the measuring workpiece can be adjusted by adjusting the position of the ultrasonic probe on the probe support.
Furthermore, water is used as a coupling agent between the ultrasonic probe and the workpiece.
Furthermore, the probe bracket is of a split structure and is divided into two parts by the central line of the probe bracket, so that the second light hole is divided into two symmetrical half holes; through amalgamation two parts for ultrasonic probe is pressed from both sides and is adorned in the second unthreaded hole, then passes the screw hole with second fixing bolt and fastens, realizes ultrasonic probe's fastening and the amalgamation of two part structures.
Furthermore, the cylindrical positioning blocks are symmetrically distributed on two sides of the ultrasonic probe, and the upper surfaces of the cylindrical positioning blocks are arc surfaces matched with the surface of the workpiece.
Furthermore, a fixing ring is arranged at the lower end of the guide shaft and is positioned below the clean plate; the retainer ring is used to define the position of the clear plate relative to the guide shaft.
Furthermore, during measurement, the cylindrical positioning block is pressed on the surface of the workpiece under the action of the spring to realize the centering of the ultrasonic probe and the cylindrical surface of the workpiece, the guide shaft is provided with a section of cylindrical surface, and the floating plate can freely swing within a certain range by setting the size of the gap between the cylindrical surface of the guide shaft and the first unthreaded hole of the static plate; the distance between the floating plate and the static plate can be adjusted by adjusting the position of the fixing ring on the guide shaft, so that the initial floating force of the floating measurement module is adjusted.
Furthermore, the measuring fixing frame is provided with a seam allowance, and the connecting frame is provided with an adjusting groove matched with the seam allowance, so that the measuring fixing frame can be adjusted up and down along the connecting frame to adapt to workpieces with different diameters.
Compared with the prior art, the invention has the following technical characteristics:
the measuring device can improve the stability of measured data, improve the measuring efficiency, automatically center and ensure the measuring precision.
Drawings
FIG. 1 is a schematic view of the overall structure of the measuring device of the present invention;
FIG. 2 is a schematic view of a floating measurement module of the measurement device;
FIG. 3 is a schematic illustration of a static plate configuration of a floating measurement module;
FIG. 4 is a front view of a probe carrier of the floating measurement module;
FIG. 5 is a top view of a probe mount of the floating measurement module;
FIG. 6 is a front view of a cylindrical locating block of the floating measurement module;
FIG. 7 is a front view of a float plate of the float measurement module;
FIG. 8 is a front view of a guide shaft of the floating measurement module;
FIG. 9 is a front view of a measurement mount;
FIG. 10 is a left side view of the measurement mount;
FIG. 11 is a top view of the measurement fixture;
FIG. 12 is a front view of the attachment bracket;
fig. 13 is a left side view of the attachment bracket.
The reference numbers in the figures illustrate: 1 floating measurement module, 1-1 static plate, 1-1-1 first light hole, 1-2 guide shaft, 1-1-1 cylindrical surface, 1-3 floating plate, 1-4 probe bracket, 1-4-1 second light hole, 1-4-2 counter bore, 1-4-3 counter bore, 1-4-4 threaded hole, 1-5 cylindrical positioning block, 1-5-1 arc surface, 1-6 first fixing bolt, 1-7 single spring lock washer, 1-8 second fixing bolt, 1-9 screw cap, 1-10 spring, 1-11 fixing ring, 1-12 ultrasonic probe, 2 buffer block, 3 compression block, 4 compression cylinder, 5 pneumatic connector, 6 cylinder bracket, 7 connecting frame, 8 lifting cylinder, 9 cylinder fixing plates and 10 measuring fixing frames.
Detailed Description
In order to overcome the technical problems of unstable measurement data, low measurement efficiency, poor centering effect, difficulty in ensuring precision and the like when the wall thickness of the thin-wall pipe is manually measured in a handheld manner, the invention provides an ultrasonic measurement device for automatically detecting the wall thickness of the thin-wall pipe, which comprises a floating measurement module 1, a buffer block 2, a pressing block 3, a pressing cylinder 4, a pneumatic connector 5, a cylinder bracket 6, a connecting frame 7, a lifting cylinder 8, a cylinder fixing plate 9 and a measurement fixing frame 10, wherein:
the lifting cylinder 8 is arranged on the cylinder fixing plate 9, and the connecting frame 7 is arranged on the lifting cylinder 8; the connecting frame is of an inverted L-shaped structure, the upper part of the connecting frame 7 is used for fixing the cylinder bracket 6, and the lower part of the connecting frame 7 is connected with a measuring fixing frame 10 arranged in the water tank; the pressing cylinder 4 is installed on the cylinder support 6, an output shaft of the pressing cylinder 4 is vertically arranged downwards, and the pressing block 3 is installed on the output shaft of the pressing cylinder 4; the pneumatic connection 5 is used to supply high-pressure driving air to the compacting cylinder 4.
The buffer block 2 is fixedly connected with the pressing block 3 through epoxy resin glue; the lower end of the pressing block 3 is provided with a pair of inclined planes of which the end parts are connected in a splayed shape, and the buffer block 2 is fixed on the inclined planes; the structure enables the buffer block 2 to be better positioned in contact with the outer surface of the cylindrical workpiece; the buffer block 2 is made of flexible materials such as rubber; the floating measurement module 1 is positioned in the water tank and is connected with the measurement fixing frame 10, and the lifting cylinder drives the floating measurement module 1 to move up and down through the connecting frame 7 and the measurement fixing frame 10; the workpiece to be measured is arranged between the floating measurement module 1 and the buffer block 2, the cylindrical positioning blocks 1-5 on the floating measurement module 1 are in contact with the workpiece after the lifting cylinder 8 is lifted, meanwhile, the pressing cylinder 4 extends out, and the workpiece is pressed tightly through the pressing block 3 and the buffer block 2, so that the ultrasonic probes 1-12 on the floating measurement module 1 are utilized to realize stable measurement of the wall thickness.
The floating measurement module 1 is a spring type floating measurement device, the floating measurement module 1 comprises a static plate 1-1, a guide shaft 1-2, a floating plate 1-3, a probe support 1-4, a cylindrical positioning block 1-5, a first fixing bolt 1-6, a single spring locking washer 1-7, a second fixing bolt 1-8, a nut 1-9, a spring 1-10, a fixing ring 1-11 and an ultrasonic probe 1-12, wherein:
the floating measurement module 1 is fixed on a measurement fixing frame 10 through a static plate 1-1; the floating plate 1-3 is arranged above the clean plate 1-1, 4 guide shafts 1-2 are fixed on the floating plate 1-3, and the guide shafts 1-2 can float up and down along 4 first unthreaded holes 1-1-1 formed in the static plate 1-1; the springs 1-10 are sleeved on the guide shafts 1-2, and the upper ends and the lower ends of the springs 1-10 are respectively connected with the floating plates 1-3 and the clean plates 1-1.
The probe support 1-4 is fixed at the bottom of the floating plate 1-3 and is provided with a second unthreaded hole 1-4-1, a counter bore 1-4-2, a counter bore 1-4-3 and a threaded hole 1-4-4; the second unthreaded hole 1-4-1 is positioned in the middle of the probe bracket 1-4, penetrates through the upper surface and the lower surface of the probe bracket 1-4 and is used for mounting an ultrasonic probe 1-12; a counter bore 1-4-2 is formed in one side of the second unthreaded hole 1-4-1, and the counter bore 1-4-2 is matched with a threaded hole 1-3-4 in the floating plate 1-3 to fix the probe bracket 1-4; the counter bore 1-4-3 is arranged on the side face of the probe support 1-4, the threaded hole 1-4-4 is arranged in the counter bore 1-4-3, the counter bore 1-4-3 and the threaded hole 1-4-4 are used for fastening the ultrasonic probe 1-12, the ultrasonic probe 1-12 is arranged upwards, and the distance between the probe 1-12 and a measuring workpiece can be adjusted by adjusting the position of the ultrasonic probe 1-12 on the probe support 1-4; water is used as coupling agent between the ultrasonic probes 1-12 and the workpiece.
In order to facilitate the installation of the ultrasonic probe 1-12, the probe bracket 1-4 is of a split structure and is divided into two parts by the central line of the probe bracket 1-4, so that the second unthreaded hole 1-4-1 is divided into two symmetrical half holes; the ultrasonic probe 1-12 is clamped in the second unthreaded hole 1-4-1 by splicing the two parts, and then the second fixing bolt 1-8 penetrates through the threaded hole 1-4-4 to be fastened, so that the ultrasonic probe 1-12 is fastened and the two-part structure is spliced.
The cylindrical positioning blocks 1-5 are symmetrically distributed on two sides of the ultrasonic probe 1-12 and are fixed on the upper surface of the floating plate 1-3 through first fixing bolts 1-6 and single-spring locking washers 1-7; as shown in fig. 6, the upper surface of the cylindrical positioning block 1-5 is an arc surface 1-5-1 matched with the surface of the workpiece.
Referring to fig. 2, the fixing ring 1-11 is installed at the lower end of the guide shaft 1-2 and is located below the clean plate 1-1; the fixed ring 1-11 is used to define the position of the net plate 1-1 with respect to the guide shaft 1-2.
During measurement, a cylindrical positioning block 1-5 is pressed on the surface of a workpiece under the action of a spring 1-10 to realize the centering of an ultrasonic probe 1-12 and the cylindrical surface of the workpiece, a section of cylindrical surface 1-2-1 is arranged on a guide shaft 1-2, and a floating plate can freely swing within a certain range by setting the size of a gap between the cylindrical surface 1-2-1 of the guide shaft 1-2 and a first unthreaded hole 1-1-1 of a static plate 1-1, so that the cylindrical surface is pressed on the surface of the workpiece and can be automatically centered; the distance between the floating plate 1-3 and the static plate 1-1 can be adjusted by adjusting the position of the fixed ring 1-11 on the guide shaft 1-2, so that the initial floating force of the floating measurement module 1 is adjusted.
The measuring fixing frame 10 is provided with a spigot 10-1, the connecting frame 7 is provided with an adjusting groove 7-1 matched with the spigot 10-1, so that the measuring fixing frame 10 can be adjusted vertically along the connecting frame 7 to adapt to workpieces with different diameters, the pressing force of the pressing cylinder 4 can be adjusted by adjusting the pneumatic pressure, the adjustment of the pressing force during the measurement of the workpieces with different sizes can be met, and the accuracy of the wall thickness measurement of the workpieces with different sizes can be realized.
The ultrasonic measuring device for automatically detecting the wall thickness of the thin-wall pipe can be arranged on a fixed platform, different measuring points on the same section are switched by rotating a workpiece, or the workpiece moves along the axial direction to switch different measuring points on the same bus, and the measuring device can also be fixed on other moving mechanisms, so that the measuring device can move along the axial direction of the workpiece to switch different measuring points on the same bus of the workpiece.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (10)
1. The utility model provides an ultrasonic measuring device for thin wall pipe wall thickness automated inspection, its characterized in that, includes unsteady measuring module (1), buffer block (2), compact heap (3), compresses tightly cylinder (4), cylinder support (6), link (7), lift cylinder (8), cylinder fixed plate (9), measures mount (10), wherein:
the lifting cylinder (8) is arranged on the cylinder fixing plate (9), and the connecting frame (7) is arranged on the lifting cylinder (8); the upper part of the connecting frame (7) is used for fixing the cylinder bracket (6), and the lower part of the connecting frame (7) is connected with a measuring fixing frame (10) arranged in the water tank; the pressing cylinder (4) is installed on the cylinder support (6), an output shaft of the pressing cylinder (4) is vertically arranged downwards, and the pressing block (3) is installed on the output shaft of the pressing cylinder (4);
the buffer block (2) is fixedly connected with the pressing block (3); the floating measurement module (1) is positioned in the water tank and is connected with the measurement fixing frame (10), and the lifting cylinder drives the floating measurement module (1) to move up and down through the connecting frame (7) and the measurement fixing frame (10); the workpiece to be measured is arranged between the floating measurement module (1) and the buffer block (2), after the lifting cylinder (8) lifts, the cylindrical positioning block (1-5) on the floating measurement module (1) is in contact with the workpiece, meanwhile, the pressing cylinder (4) extends out, the workpiece is pressed tightly through the pressing block (3) and the buffer block (2), and therefore stable measurement of the wall thickness is achieved through the ultrasonic probe (1-12) on the floating measurement module (1).
2. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 1, wherein the lower end of the pressing block (3) is provided with a pair of inclined planes with ends connected in a splayed shape, and the buffer block (2) is fixed on the inclined planes.
3. The ultrasonic measuring device for automatic detection of the wall thickness of the thin-walled tube according to claim 1, wherein the floating measuring module (1) comprises a clean plate (1-1) and a floating plate (1-3);
the floating measurement module (1) is fixed on the measurement fixing frame (10) through the static plate (1-1); the floating plate (1-3) is arranged above the clean plate (1-1), the guide shaft (1-2) is fixed on the floating plate (1-3), and the guide shaft (1-2) can float up and down along the first unthreaded hole (1-1-1) formed in the static plate (1-1); the guide shaft (1-2) is sleeved with a spring (1-10), and the upper end and the lower end of the spring (1-10) are respectively connected with the floating plate (1-3) and the clean plate (1-1);
the cylindrical positioning blocks (1-5) and the ultrasonic probes (1-12) are arranged on the upper surfaces of the floating plates (1-3).
4. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 3, wherein a probe bracket (1-4) is fixed at the bottom of the floating plate (1-3), and a second unthreaded hole (1-4-1), a counter bore (1-4-2), a counter bore (1-4-3) and a threaded hole (1-4-4) are arranged on the probe bracket (1-4); wherein:
the second unthreaded hole (1-4-1) is positioned in the middle of the probe bracket (1-4), penetrates through the upper surface and the lower surface of the probe bracket (1-4) and is used for mounting the ultrasonic probe (1-12); a counter bore (1-4-2) is formed in one side of the second unthreaded hole (1-4-1), and the counter bore (1-4-2) is matched with a threaded hole (1-3-4) in the floating plate (1-3) to be used for fixing the probe support (1-4); the counter bore (1-4-3) is formed in the side face of the probe support (1-4), the threaded hole (1-4-4) is formed in the counter bore (1-4-3), the counter bore (1-4-3) and the threaded hole (1-4-4) are used for fastening the ultrasonic probe (1-12), the ultrasonic probe (1-12) is arranged upwards, and the distance between the probe (1-12) and a measuring workpiece can be adjusted by adjusting the position of the ultrasonic probe (1-12) on the probe support (1-4).
5. The ultrasonic measuring device for automatic detection of the wall thickness of the thin-walled tube according to claim 1, wherein water is used as a coupling agent between the ultrasonic probe (1-12) and the workpiece.
6. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 4, wherein the probe bracket (1-4) is of a split structure and is divided into two parts by the central line of the probe bracket (1-4), so that the second unthreaded hole (1-4-1) is divided into two symmetrical half holes; the ultrasonic probe (1-12) is clamped in the second unthreaded hole (1-4-1) by splicing the two parts, and then a second fixing bolt (1-8) penetrates through the threaded hole (1-4-4) to be fastened, so that the ultrasonic probe (1-12) is fastened and the two-part structure is spliced.
7. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 1, wherein the cylindrical positioning blocks (1-5) are symmetrically distributed on two sides of the ultrasonic probe (1-12), and the upper surfaces of the cylindrical positioning blocks (1-5) are arc surfaces (1-5-1) matched with the surface of a workpiece.
8. The ultrasonic measuring device for automatic detection of the wall thickness of the thin-walled tube according to claim 3, wherein a fixing ring (1-11) is installed at the lower end of the guide shaft (1-2), and the fixing ring (1-11) is positioned below the clean plate (1-1); the fixing ring (1-11) is used to define the position of the clean plate (1-1) relative to the guide shaft (1-2).
9. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 3, wherein during measurement, the cylindrical positioning block (1-5) is pressed on the surface of a workpiece under the action of the spring (1-10) to realize the centering of the ultrasonic probe (1-12) and the cylindrical surface of the workpiece, the guide shaft (1-2) is provided with a section of cylindrical surface (1-2-1), and the floating plate can freely swing within a certain range by arranging the gap between the cylindrical surface (1-2-1) of the guide shaft (1-2) and the first unthreaded hole (1-1-1) of the static plate (1-1); the distance between the floating plate (1-3) and the static plate (1-1) can be adjusted by adjusting the position of the fixing ring (1-11) on the guide shaft (1-2), so that the initial floating force of the floating measuring module (1) is adjusted.
10. The ultrasonic measuring device for automatically detecting the wall thickness of the thin-walled tube according to claim 1, wherein the measuring fixing frame (10) is provided with a spigot (10-1), and the connecting frame (7) is provided with an adjusting groove (7-1) matched with the spigot (10-1), so that the measuring fixing frame (10) can be adjusted up and down along the connecting frame (7) to adapt to workpieces with different diameter sizes.
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| CN202111103909.6A CN113916164B (en) | 2021-09-18 | 2021-09-18 | Ultrasonic measuring device for automatically detecting wall thickness of thin-wall pipe |
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| JP2020106549A (en) * | 2020-04-10 | 2020-07-09 | 株式会社クボタ | Pipe thickness measurement device |
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2021
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| US5583292A (en) * | 1991-03-23 | 1996-12-10 | Krautkramer Gmbh & Co. | Ultrasonic measuring process for the wall thickness curve of a weld seam of a pipe |
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