JPS60233545A - Probe holder of ultrasonic flaw detector - Google Patents

Abstract

PURPOSE:To adjust simultaneously a water distance of plural probes by placing a probe part consisting of a screw-cutted probe, and a nut which has extended and provided a gear screwed to said probe, so that a gear of its adjacent probe part is engaged. CONSTITUTION:A nut 222 which has performed a gear working to the outside periphery is screwed to a cylindrical probe 221 which has performed a screw cutting to the outside periphery, and said probe is fitted so as to be turnable into a probe installing hole 34a of a probe holder outside cylinder 21. In case of a water distance adjusting work, a pinion 37 is engaged to a gear 226 of the outer edge of the nut 222 by inserting an adjusting tool 36 into an adjusting hole 227, and the nut 222 is rotated. Also, the gear 226 is engaged to a gear 226' of an adjacent nut 222', therefore, an adjacent probe 221' can also execute simultaneously the water distance adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a probe holder used in a probe rotation type ultrasonic flaw detection device.

[Prior Art] Technical Background Ultrasonic flaw detectors using a rotating probe type are widely used in m-tube manufacturing lines because of their fast flaw detection speed and extremely high throughput.

In this type of flaw detection, a steel pipe is inserted into a through hole of a cylindrical probe holder that is mounted with a large number of probes and rotates at high speed, and the steel pipe is detected while being transported. In other words, while drawing multiple spiral flaw detection trajectories on the surface of the tube by rotating the probe and transporting the steel tube straight,
Full-length flaw detection will be carried out.

On the other hand, in this flaw detection, a large centrifugal force acts as the probe holder rotates at high speed, so a water layer is always interposed between the probe and the material being tested to ensure stable acoustics. There is a particular need to ensure bonding and to be able to easily change setups in a short time when changing the outer diameter of the test material.

<Summary of Prior Art> Conventionally, for this purpose, a probe holder is inserted into a probe holder outer cylinder for mounting and holding a probe, and the probe holder outer cylinder is inserted in the axial direction. It is known that the cylinder block assembly includes an inner cylinder block assembly that fits together. For example, as this type of probe holder, those shown in FIGS. 1 and 2 have been put into practical use (Utility Model Application No. 56-66863, Utility Model Application No. 57-168057).

The probe holder shown in FIGS. 1 and 2 includes a probe holder 3 on which a plurality of probes 2 are mounted, and a nozzle block 4 fitted into a cavity 5 inside the probe holder 3. The test material 1 is conveyed through the through hole 4a of the nozzle block 4.

The probe holder 3 is connected to the rotating mechanism rotor 1 at the flange portion 7.
2 and is driven to rotate at high speed.

The probe holder 3 and nozzle block 4 have contact surfaces 9.1
0 is also tapered. Further, the tip portion 11 of the nozzle block 4 is formed in the shape of a thin tongue, and the entire nozzle block 4 is shaped like a thin tongue.

It is manufactured from a resin material in consideration of not damaging the test material 1.

With this structure, the nozzle block 4 is attached to the probe holder 3.
Incorporate. When the two contact surfaces 9 and 10 of the nozzle block 4 are tightened with bolts (not shown) from the direction of arrow X in FIG.
The dimensional relationship is provided so that the nozzle block 4 is elastically bent and the abutting surfaces 10 come into contact with each other in a slightly compressed state.

With this configuration, in the assembled state, the contact surfaces 9.10 are in complete contact, providing watertightness to the cavity 5 and ensuring coaxiality between the probe holder 3 and the nozzle block 4. It is designed to be secured.

In addition, the probe holder shown in Fig. 1 maintains the gap δ between the test material 1 and the inner surface of the nozzle block 4 at a constant value of *, JX, corresponding to the outer diameter of the test material 1. . moreover,
Each nozzle 6 is bored at a position corresponding to each probe 2 in the nozzle block 4.

In this configuration, the flaw detection water supplied from the water supply hole 13 of the rotor 12 through each water supply hole 8 is guided to the cavity 5 through each water channel 14. Water with uniform water pressure within the cavity 5 is ejected from each nozzle 6 between the specimen 1 and the specimen 1 to form a uniform water column, which has the effect of ensuring acoustic coupling.

In this conventional probe holder, when changing the outer diameter of the specimen 1, the procedure is as follows. That is, prepare a plurality of nozzle blocks with different inner diameter dimensions in one probe holder, select a nozzle block so that the gap δ with the test material 1 is a predetermined value, and select only the nozzle block. By replacing the holder, it is possible to change the outer diameter of the specimen in a short time.

Next, FIGS. 3 and 4 show another type of probe holder, with FIG. 3 being a sectional view thereof, and FIG. 4 being a sectional view taken along line A-A in the same figure.

In these figures, the flange 1 of the rotating mechanism rotor 12
A plurality of probe parts 22 are attached to a probe holder outer cylinder 21 which is fixedly joined to the probe holder 2'. A nozzle block assembly 23 is fitted and fixed in the axial direction into the through hole inside the probe holder outer cylinder 21 .

The probe holder outer cylinder 21 and the nozzle block assembly 23 are sealed by O-rings 24, 25 and 26 at appropriate positions on the fitting surfaces. The water chamber 20 of the nozzle block assembly 23 communicates with the water receiving hole 18 provided in the probe holder outer cylinder 21 and the communicating hole 19 via the hole 27 . That is, the O-rings 24 and 25 connect the water chamber 20 from the guide hole 19.
In addition to sealing the flaw detection pressure water to the water chamber 15, the leakage of the flaw detection water from the water chamber 15 is also sealed. Similarly, the O-ring 26
Seal the leakage of flaw detection water.

FIG. 5 and FIG. 6 show the probe holder outer cylinder and nozzle block assembly of the conventional probe holder described above separately disassembled. Further, FIG. 7 shows a cross section of the nozzle block assembly taken along line A-A.

As shown in FIG. 6.7, the nozzle block assembly 23 includes an inlet nozzle block 28, an outlet nozzle block 29, and a communication pipe 30a connecting these.

It consists of 30b, 30c, 30d and a mounting plate 31. The inlet nozzle block 28 has an ice chamber 20 and a slit-shaped nozzle 280, while the outlet nozzle block 29 has an ice chamber 20 and a slit-shaped nozzle 280.
An ice chamber 20' and a slit-shaped nozzle 290 are respectively machined and provided. Both ice chambers 20 and 20' (7) have communication pipes 30a and 30b'.

They are assembled and communicated by 30c and 30d.

The nozzle block assembly 23 configured as described above is fitted into the through hole 32 of the probe holder outer cylinder 21 and fixed with bolts 33 via the mounting plate 31.

On the other hand, the probe holder outer cylinder 21 shown in FIG. 5 has a required number of probe mounting holes 34a, 34b, . . . .

35a, 35b, . . . are provided. A probe suitable for the purpose of flaw detection is mounted in each probe mounting hole 34a.

Next, the operation of the above conventional example configured in this manner will be explained.

In FIG. 3, the flaw detection pressure water supplied to the water receiving hole 18 is
It is guided to the ice chamber 20 and further connected to a communication pipe 30a.

30b... is led to the water chamber 20'. Then,
The flaw detection water is injected from slit-shaped nozzles 280, 290 provided in each ice chamber 20, 20'.

The collision of this jetted water seals the leakage of water in the water chamber 15, thereby forming a water layer within the probe holder and ensuring acoustic coupling between the probe and the test material. work like that.

<Problems with the prior art> In all of the conventional probe holders described above, a probe suitable for the purpose of flaw detection is attached to a probe attachment hole provided at an appropriate location to form a probe section. It consists of a probe holder outer cylinder, which is inserted into the probe holder outer cylinder, and an inner cylinder block assembly, which is inserted into the probe holder outer cylinder in the axial direction and fitted into the probe holder outer cylinder. It rotates at high speed while forming a water layer between the probe and the material to be tested, and has the function of performing flaw detection over the entire surface and length of the material to be tested. Then, in order to reduce the gap δ (see Figure 1.3) with the outer peripheral surface of the test material in accordance with the outer diameter of the test material,
By preparing a plurality of inner cylinder block assemblies with different inner diameters corresponding to the outer diameter of the material to be inspected, these can be selectively replaced to perform setup changes in accordance with changes in the outer diameter.

However, with the old conventional probe holder, when changing the outer diameter of the material to be tested, the inner cylinder block assembly is selectively replaced. Not only does the distance change, but in the case of oblique flaw detection, the angle of incidence changes, so there is a problem in that it is not possible to deal with large changes in the outer diameter of the test material.

[Object of the Invention] The present invention has been made in view of the above-mentioned drawbacks. First, it is possible to adjust the water distance of the probe so that the probe holder can be adjusted when changing the outer diameter of the specimen. Even if you replace only the inner cylinder block assembly instead of the entire block assembly, you can set the water distance appropriately, and even if the outer diameter of the material to be tested changes, the probe will always be at the specified incidence. To provide a probe holder for an ultrasonic flaw detector that can be set at a corner and expand the range of dimensional changes of a test material.

Second, in conjunction with adjusting the water distance of one probe, the water distance of multiple probes can be adjusted simultaneously, greatly reducing setup time when changing the outside diameter of the test material. An object of the present invention is to provide a probe holder for an ultrasonic flaw detector that can achieve the following.

[Structure of the Invention] In order to achieve the object described above, the structure of the first invention of the present application is to provide a probe that forms a probe portion by mounting and holding a probe in a probe mounting hole provided at a proper location. It consists of a holder outer cylinder and an inner cylinder block assembly that is inserted into and fitted into the probe holder outer cylinder in the axial direction, and forms a water layer between the probe and the test material. In the probe holder of an ultrasonic flaw detector that rotates at high speed.

The Pakato probe section consists of a cylindrical probe whose outer circumferential surface is threaded, and a nut that is screwed onto the outer circumference of the probe and has a gear extending in the shape of a flange on the outer edge.・5. And, the probe portion is arranged so that gears of adjacent probe portions mesh with each other, and the water distance of multiple probes can be adjusted simultaneously. Features.

The above configuration requirements ■ and ■ function as a water distance adjustment mechanism,
Since each probe is structured to be linked, it is possible to adjust the water distance of multiple or all probes at the same time by adjusting one probe, making the operation easier. Moreover, the adjustment time is shortened, and the working time when changing the outer diameter of the material to be inspected is greatly reduced.

Therefore, even if the outer diameter of the material to be inspected changes, the probe can always be set at a specified angle of incidence, and the range of changes in the dimensions of the material to be inspected can be greatly expanded.

Next, the configuration of the second invention of the present application includes a probe holder outer cylinder that forms a probe section by mounting and holding a probe in a probe mounting hole provided at a proper location, and a probe holder outer cylinder that forms a probe section. The ultrasonic flaw detector consists of an inner cylinder block assembly that is inserted into the outer cylinder in the axial direction and is fitted, and rotates at high speed while forming a water layer between the probe and the test material. In the probe holder, (possible) the probe part has a cylindrical probe whose outer circumferential surface is threaded, and is threadedly engaged with the outer circumference of the probe;
It consists of a nut with a gear extending in the shape of a flange on the outer edge. The nut is meshed with a gear on the outer edge of the nut of a plurality of adjacent probe parts around the circumference, and the water distance of the plurality of probes can be adjusted simultaneously by adjusting the rotation of the ring-shaped gear. Features.

The above configuration requirements ■ and ■ function as a water distance adjustment mechanism,
Since the structure is such that a ring-shaped gear loosely fitted in the probe holder is linked to each probe on the same circumference, by adjusting the gear, multiple probes on the same circumference can be linked. It is possible to adjust the water distance of the tentacles at the same time. This facilitates the adjustment operation, shortens the adjustment time, and significantly shortens the working time when changing the outer diameter of the test material. .

Therefore, even if the outer diameter of the material to be inspected changes, the probe can always be set at a specified angle of incidence, and the range of changes in the dimensions of the material to be inspected can be greatly expanded.

Next, the configuration of the third invention of the present application includes a probe holder outer cylinder that forms a probe section by mounting and holding a probe in a probe mounting hole provided at a proper location, and a probe holder outer cylinder that forms a probe section. The ultrasonic flaw detector consists of an inner cylinder block assembly that is inserted into the outer cylinder in the axial direction and is fitted, and rotates at high speed while forming a water layer between the probe and the test material. In the probe holder, the above-mentioned probe part has a cylindrical probe with screws applied to the same surface on the outside, and is screwed to the outer periphery of the probe, and has a gear in the shape of a flange on the outer edge. ■ The probe part is arranged so that the gears of the probe parts adjacent in the axial direction of the probe holder outer cylinder are meshed with the gears. Further, a ring-shaped gear with teeth carved on the end surface side is loosely fitted into the probe holder, and the gear is connected to one or more of the rings arranged on one of the circumferences. It is characterized in that it is meshed with a gear on the outer edge of the nut of the probe section, and the water distance of all the probes can be adjusted simultaneously by adjusting the rotation of the ring-shaped gear.

The above structural requirements (i), [Yes], and (■ function as a water distance adjustment mechanism. In other words, a ring-shaped gear loosely fitted in the probe holder is linked to each probe on the same circumference. Moreover, since the probes adjacent in the axial direction of the probe holder outer cylinder are linked by gears, the water distance of all linked probes can be adjusted by adjusting the ring gear. ,
Can be done at the same time. This facilitates the adjustment operation, shortens the adjustment time, and significantly shortens the work time for changing the outer diameter dimension of the test material.

Therefore, even if the outer diameter of the material to be inspected changes, the probe can always be set at a specified angle of incidence, and the range of changes in the dimensions of the material to be inspected can be greatly expanded.

[Example] Embodiments of the present invention will be described with reference to the drawings.

Configuration of First Embodiment> FIG. 8 is a sectional view showing a first embodiment of the probe holder of the present invention, and FIG. 9 is a sectional view taken along line A-A in the same figure.

In addition, in this embodiment, the third inner cylinder block assembly is used as the inner cylinder block assembly.
Although the case of using a nozzle block assembly having a slit nozzle as shown in FIG. It doesn't change.

In these figures, the flange 1 of the rotating mechanism rotor 12
A probe section 22 having a water distance adjustment mechanism is attached to a probe holder outer cylinder 21 having a flange section 7 joined to and defined at 2'. The through hole inside the probe holder outer cylinder 21 has a
The nozzle block assembly 23 is fitted and fixed in the axial direction.

The probe holder outer cylinder 21 and the nozzle block assembly 23 are sealed by O-rings 24, 25 and 26 at appropriate positions on the fitting surfaces. The water chamber 20 of the nozzle block assembly 23 communicates with the water receiving hole 18 provided in the probe holder outer cylinder 21 and the communicating hole 19 via the hole 27 . That is, the O-rings 24 and 25 connect the water chamber 20 from the guide hole 19.
'1PA,j'I+js,+1,-4-jHfi43 of the flaw detection water in the water chamber 15.
1. -/"l11-///QGI- to -& seal the leakage of the flaw detection water in chamber 15.

The nozzle block assembly 23 having the above configuration is fitted into the probe holder outer cylinder 21, and is attached to the port 33 through the mounting plate 31.
Fixed by

In addition, in the examples shown in FIGS. 8 and 9, the outer circumferential wall of the probe holder outer cylinder 21 is provided with four probes with a water distance adjustment mechanism for each cross section in both the A-A cross section and the B-B cross section. Tentacle parts 22, 22
' is inserted through the probe mounting hole and attached.

Adjustments using the water distance adjustment mechanism can be made when changing the outer diameter of the material to be inspected.
Similar to replacing the nozzle block assembly 23 with one having an appropriate outer diameter, this adjustment is performed as a setup change operation. By adjusting the water distance, it is possible to set the ultrasonic incident angle to a specified incident angle and to align the flaw detection conditions.

In addition, this mechanism prevents the tip of the probe from interfering with the nozzle block assembly 23 when the nozzle block assembly 23 is attached to and detached from the probe holder outer cylinder 21. It is also used to retract the probe tip during work.

FIG. 10 shows an example of the probe part used in the above embodiment.
Examples are shown in FIGS. 11 and 12. Note that FIG. 1O is a top view showing an example of the probe portion, FIG. 11 is a cross-sectional view taken along the line AA, and FIG. 12 is a cross-sectional view taken along the line B-B.

In these figures, the probe 221 has a cylindrical shape, and the outer periphery is threaded. This probe 221
A nut 222 with gear processing on the outer periphery is screwed into the
It is rotatably fitted into the probe mounting hole 34a of the probe holder outer cylinder 21.

This nut 222 is held down by a presser metal 223,
Extraction will be stopped.

As shown in FIGS. 10 and 11, the probe 221 is machined with a groove 224 parallel to the axial direction, and the tip of a pin 225 driven into the presser metal 223 is fitted into this groove 224. , anti-rotation is applied.

As a mechanism for adjusting the water distance, an adjustment hole 227 into which the tip of the adjustment tool 36 shown by the chain line in FIG. 11 is inserted.
is machined into the probe holder outer cylinder 21. By inserting the adjustment tool 36 into this adjustment hole 227,
The pinion 37 is connected to the gear 22 provided on the outer edge of the nut 222.
6 and rotates the nut 222.

In addition, the gear 226 of the nut 222 is
Since it also meshes with gear 226' of gear 22',
As shown in the figure, adjacent probes 221' can also perform water distance adjustment at the same time. For this reason, the probe 221
, 221', and the nuts 222, 222' that are screwed thereto are combined with each other as reverse threads.

Operation of the first embodiment> Next, the operation of the above-described embodiment configured in this manner will be described.

The probe attached to the probe holder outer cylinder 21 has a water distance adjustment function. This water distance adjustment is performed so that the center of the ultrasonic beam from the probe 221 is incident on point 0, where the center line of the probe 221 intersects the surface of the specimen 1, as shown in FIG. In this embodiment, the adjustment operation is to adjust the axial position of the probe 221, by adjusting one probe on the B-B cross section in FIG. This can be done simultaneously for other - probes on the A-A cross section.

That is, in order to perform the water distance adjustment work, the tip of the adjustment tool 36 shown by the chain line in FIG.
The pinion 37 of the adjusting tool 36 is engaged with the gear 226 provided on the outer edge of the nut 222, and the adjusting tool 36 is rotated.

The rotation of the pinion 37 causes the nut 222 to rotate,
The probe 221 is moved back and forth by screw feeding, and the water distance is adjusted.

At this time, the gear 226 on the outer periphery of the nut 222 is simultaneously connected to the gear 226 on the outer periphery of the adjacent probe section 22'.
6', the water distance between the two probes can be adjusted at the same time.

Configuration of Second Embodiment Next, regarding the second embodiment of the present invention shown in FIG.
The embodiment has a ring-shaped gear 38 that commonly meshes with nuts 222 of a plurality of probe parts 22 mounted on the BB cross section of the probe holder.

Similar to that shown in the first embodiment, each adjacent probe section 22, 22' is connected to the nut 222.
222' is rotated to make the probes 221° and 221' appear and disappear, thereby adjusting the water distance. Therefore,
All the probes attached to the probe holder, for example, 8 channels in total, 4 channels in the circumferential direction and 4 channels in the axial direction, can be adjusted in water distance at the same time.

Note that the configuration of the other parts except for the part related to the ring gear is the same as that of the first embodiment, so the description will not be repeated.

The ring-shaped gear 38 is connected to a groove 228 provided over the entire outer circumference of the probe holder outer cylinder 21.

The probe holder outer cylinder 2 is engaged by a plurality of (3 to 4) pins 41 hard driven into the ring gear 38.
Rotating in the circumferential direction on 1 is -p @A-Suda,
A gear 39 is carved on the end face of the ring-shaped gear 38. This gear 39 is the gear 22 on the outer edge of the nut 222.
6, the water distances of all the probes can be adjusted simultaneously by adjusting the rotation of the ring gear 38.

By the way, while the gear 226 on the outer edge of the nut 222 is a +i spur gear, the gear 39 on the end face of the ring-shaped gear 38 is
If the gear is cut using the generation method, it will be equivalent to a bevel gear with a large cone angle, and if the ring is indexed on an indexing table while being milled, the tooth profile will be distorted from the regular tooth profile. Therefore, the meshing is strictly different from the ideal meshing. However, in this embodiment, since it is different from the case of power transmission and the meshing accuracy is not a problem, even such meshing does not pose a practical problem.

Operation of the second embodiment> Next, the operation of the second embodiment configured as described above will be explained.

Water distance adjustment is performed using an adjustment tool 36 (not shown in FIG. 13, see FIG. 11) similar to that shown in the first embodiment.
Use. Insert the tip of this adjustment tool 36 into the adjustment hole 227 provided in the probe holder outer cylinder 21, and then
By meshing the pinion 37 with the gear 40 carved on the opposite end surface of the ring gear 38, the rotation of the ring gear and the gear 38 can be adjusted, that is, the water distances of all the probes can be adjusted simultaneously. be able to.

At this time, from the relationship between the rotation angle of the ring gear 38 and the amount of axial movement of the probe, it is necessary to provide a pointer on the ring gear 38 and a scale line on the cylindrical surface of the probe holder outer cylinder 21. Therefore, for example, the water distance can be appropriately set by simply aligning the pointer with a scale line that is graduated based on the outer diameter of the material to be inspected. Of course, the scale and the pointer may be provided reversely.

Modification of the Second Embodiment> In the second embodiment, the adjustment of the rotation of the ring gear 38 using the adjustment tool 36 was exemplified. It is also possible to provide the ring-shaped gear 38 with a required rotation angle by engaging with a gear 40 carved on the opposite end surface or a protrusion. This also allows the water distances of all probes to be set at once.

Further, in the second embodiment, the water distance of all the probes is adjusted by one ring-shaped gear, but the probes 221 of the adjacent probe sections 22 and 22',
A ring-shaped gear may be provided for each probe portion 22, 22' without linking the probe portions 221'. in this case,
The water distances of a plurality of probes on the same cross section perpendicular to the central axis of the probe holder outer cylinder 21 are collectively adjusted by each ring-shaped gear.

[Effects of the Invention] As explained above, the present invention includes a probe holder outer cylinder for mounting and holding a probe, and an inner cylinder block that is inserted and fitted in the axial direction to the probe holder outer cylinder. The assembly is divided into
By adding a water distance adjustment function to the probe holder, which is configured to be removably assembled, it is possible to change the outer diameter by replacing only the inner cylinder block assembly instead of the entire probe holder. In addition to the effects of reducing manufacturing costs and easily dealing with wear and breakage of the probe holder, the following effects can be obtained.

First, when the outer diameter of the material to be inspected changes, the probe can always be set at a specified angle of incidence, which has the effect of expanding the range of dimensional changes of the material to be inspected.

Second, since the water distance of multiple or all probes can be adjusted at the same time, the time required for adjusting the probes, that is, the setup time for changing the dimensions of the test material, can be significantly reduced. be.

[Brief explanation of drawings]

Figure 1 is a sectional view showing an example of a conventional probe holder;
The figure is a cross-sectional view taken along the line A-A, FIG. 3 is a cross-sectional view showing another type of conventional probe holder, and FIG. 4 is a cross-sectional view taken along line A-A in the same figure.
Fig. 5 is a sectional view showing the outer cylinder of the conventional probe holder shown in Fig. 3 above, and Fig. 6 shows a nozzle block assembly used in the conventional probe holder shown in Fig. 3 above. 7 is a sectional view taken along the line A-A, FIG. 8 is a sectional view showing the first embodiment of the probe holder of the present invention, and FIG. 9 is a sectional view taken along the line AA of the same figure. FIG. 10 is a top view showing an example of the probe section of the above embodiment, FIG. 11 is a sectional view taken along line A-A in FIG. 10,
FIG. 12 is a sectional view taken along line BB in FIG. 10, and FIG. 13 is a partially cutaway front view showing a second embodiment of the present invention. Engineering...Test material 2...Probe 3...Probe holder 4...Nozzle block I2.
...Rotating mechanism rotor 15, 20.21'...Water chamber 18...Water receiving hole 19...Guiding hole 21, 21'...Probe holder outer cylinder 22.22'
...Probe part 23...Nozzle block assembly 24, 25, 2Ei...0 ring 27... Hole 28
...Inlet nozzle block 28...Outlet nozzle block 280.290...Slit-shaped nozzles 30a, 30b
, 30c, 30d Continuous pipe 31...Mounting plate 32.
...Through hole 33...Bolts 34a, 34b, =-, 35a, 35b, =-, probe mounting holes 221, 221'...Probe 222.2
22'... Nut 223... Holder 224.22
8...Groove 225...Bin 228.228'...
Gear 227...Adjustment hole 36...Adjustment tool 37...
・Pinion 38...Ring gear 39.40...
Gear 41...Pin Applicant Tokyo Keiki Sumitomo Metal Industries Co., Ltd. Agent Patent Attorney Iwao Mishina Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure n Figure 11 Figure 72 Figure 13

Claims (3)

[Claims] (1) A probe holder outer cylinder that attaches and holds the probe through a probe mounting hole provided at an appropriate location to form the probe section, and is inserted into the probe holder outer cylinder in the axial direction. In a probe holder for an ultrasonic flaw detector, the probe holder comprises an inner cylinder block assembly that is fitted together with the probe, and rotates at high speed while forming a water layer between the probe and the test material. The probe section is made up of a cylindrical probe whose outer circumferential surface is threaded, and a nut that is screwed onto the outer circumference of the probe and has a gear extending in the shape of a brim on the outer edge. and the probe section is arranged so that gears of adjacent probe sections mesh with each other, so that the water distance of a plurality of probes can be adjusted simultaneously. machine probe holder. (2) A probe holder outer cylinder that attaches and holds the probe through the probe mounting hole provided at the appropriate location to form the probe part, and is inserted into the probe holder outer cylinder in the axial direction. In the probe holder of an ultrasonic flaw detector, the probe holder of an ultrasonic flaw detector consists of an inner cylinder block assembly that fits together with the probe, and rotates at high speed while forming a water layer between the probe and the test material. The probe portion consists of a cylindrical probe with a threaded outer circumferential surface, and a nut that is threadedly engaged with the outer circumference of the probe and has a gear extending in the shape of a brim on the outer edge, A ring-shaped gear with teeth carved on the end surface side is loosely fitted into the probe holder, and the gear is connected to the gears on the outer edge of the nuts of the plurality of probe parts adjacent on the same circumference. A probe holder for an ultrasonic flaw detector, characterized in that the water distance of a plurality of probes can be adjusted simultaneously by adjusting the rotation of the ring-shaped gear. (3) A probe holder outer cylinder that attaches and holds the probe through the probe mounting hole provided at the appropriate location to form the probe section, and is inserted into the probe holder outer cylinder in the axial direction. In the probe holder of an ultrasonic flaw detector, the probe holder of an ultrasonic flaw detector consists of an inner cylinder block assembly that fits together with the probe, and rotates at high speed while forming a water layer between the probe and the test material. The probe portion consists of a cylindrical probe with a threaded outer circumferential surface, and a nut that is threadedly engaged with the outer circumference of the probe and has a gear extending in the shape of a brim on the outer edge, Further, the probe section is arranged such that gears of the probe sections adjacent in the axial direction of the probe holder outer cylinder are arranged to mesh with each other, and the probe holder further has teeth on the end surface side. A ring-shaped gear engraved with is loosely fitted, and the gear is meshed with a gear on the outer edge of the nut of one or more of the probe parts arranged on any circumference, A probe holder for an ultrasonic flaw detector, characterized in that the water distance of all probes can be adjusted simultaneously by adjusting the rotation of a ring-shaped gear.