JPH0875715A - Ultrasonic non-destructive inspection device - Google Patents

Abstract

PURPOSE: To enable fast scanning of a curved surface to be smoothly performed by facilitating the handling of an object to be measured without enlarging on inspection device as a whole more than necessary by positioning the object to be measured having a complicated curved surface on a skirter using a 5-axis control with a simple shape. CONSTITUTION: A support frame 5 is moved vertically by a Z-axis drive mechanism along a support pole 5 and a moving truck 7 is advanced on an orbit 8 by a Y-axis drive mechanism. Then, a skirter 6 is moved horizontally along the support frame 5 by an X-axis drive mechanism while a clamp frame 11 clamping an object to be measured is being turned longitudinally in the direction of moving of the truck 7 by a rotation mechanism 12 (A-axis drive mechanism) driven by an actuator 13 and the skirter 6 on the receiving side is moved by an S axis drive mechanism to adjust the distance to the object to be measured. By this 5-axis control, the object to be measured is positioned on the skirter 6 at a fixed distance therefrom, thereby enabling fast scanning of a curved surface with a remote control of a clamping mechanism and the scanning of the skirter 6 alone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic nondestructive inspection apparatus for ultrasonically nondestructively inspecting an object to be measured which is made of a composite material having a curved surface such as a door or a fuselage of an aircraft body.

[0002]

2. Description of the Related Art For example, a door or a fuselage made of a composite material which constitutes an airframe of an aircraft has a complicated curved surface or tapered shape in terms of fluid engineering. Conventionally, when performing non-destructive inspection of an object to be measured composed of a composite material having such a curved surface shape with an ultrasonic non-destructive inspection device, the curved surface or taper of the object to be measured is moved with respect to the movement of the ultrasonic probe. Since it is necessary to control the contours along with it, and the machine itself, which is the object to be measured, has an extremely large number of divided shapes, an ultrasonic non-destructive inspection device with a structure that takes these into consideration is used. .

For example, in Japanese Utility Model Laid-Open No. 56-2220, front and rear fan-shaped frames, which are detachably fixed to the front and rear ends of a curved plate, are integrally fixedly connected to each other, and the central portion of the fan-shaped portion is connected. The lower part of the fuselage is pivotally supported to the left and right, and the elongated support frame is reciprocated before and after the arc-shaped parts of both fan-shaped frames are loosely fitted together. And an ultrasonic receiving probe and an ultrasonic transmitting probe that face each other between the upper and lower frame central portions of the support are attached substantially perpendicularly to a curved plate attached between the front and rear fan-shaped frames. An apparatus is disclosed in which a space for forming an ultrasonic wave column is provided between each probe and a curved plate to enable ultrasonic flaw detection of the curved plate.

Further, in Japanese Utility Model Laid-Open No. 3-110363, an automatic ultrasonic flaw detector is provided with a probe section having a probe and a position detection sensor. Disclosed is a device that can automatically perform ultrasonic flaw detection of a non-inspection object by moving the probe along the Z axis and the Y axis, and moving the Y axis along the X axis. ing.

[0005]

However, in the above-mentioned conventional ultrasonic flaw detector, since the non-inspection object is put in the connected supporting frame, the supporting frame itself for holding the ultrasonic transmitting / receiving probe is not provided. Upsizing. In addition, the fan-shaped body that receives the non-inspection object is surrounded by the structure frame that rotates the fan-shaped body and the frame that supports the support frame. For this reason, since a long wire is used to rotate the non-inspection object in the fan-shaped body component portion, there is a problem that the set inspection position is displaced due to expansion and contraction of the wire itself.

Further, the position detection sensor detects a mark provided on the non-inspection object, and the probe moves on each of the Y and Z axes in response to a signal input from the sensor to perform ultrasonic flaw inspection of the non-inspection object. The method used can perform flaw detection on a curved surface that is close to a flat plate, but ultrasonic inspection cannot be performed on a non-inspection object with a large curved surface because the Y and Z axis configurations do not run at regular intervals with the non-inspection object. The problem of becoming difficult arises.

The present invention has been made in order to solve the above problems, and it is possible to perform smooth and high-speed curved surface scanning without making the whole larger than necessary, and access under ideal conditions in handling. An object of the present invention is to provide an ultrasonic non-destructive inspection device.

[0008]

In order to achieve the above-mentioned object, the present invention provides the transmission type ultrasonic probe by injecting water toward a transmission type ultrasonic probe and an object to be measured having a curved shape. In the ultrasonic nondestructive inspection device for nondestructive inspection of the object to be measured using a pair of scooters having a nozzle that forms a water column for transmitting ultrasonic waves transmitted and received by a child, vertically spaced apart on the base as appropriate. And a pair of stanchions provided with a guide mechanism on the opposite side, and provided in a horizontal state between these stanchions, and mounted while being held by the guide mechanism of each stanchion so as to be vertically movable, Further, a support frame that supports the pair of scooters so that the distance between the opposite sides of the ultrasonic transmission / reception side can be adjusted so as to be movable in the horizontal direction, and a moving direction of the scooters on the base below the pair of stanchions. And a fixed frame that is rotatably attached to columns vertically attached to both sides of the movable trolley to fix the object to be measured. Z driven vertically
A shaft drive mechanism, an X-axis drive mechanism that horizontally drives the pair of scooters along the support frame, and a Y drive the movable carriage in a direction orthogonal to the movement direction of the scooters.
An axial drive mechanism, an A-axis drive mechanism for turning the fixed frame back and forth in the moving direction of the movable carriage, and an S-axis drive mechanism for adjusting the facing distance between the receiving side of the scooter and the object to be measured are provided. By controlling the drive mechanism of each axis, the non-destructive inspection of the object to be measured is performed while positioning the object to be measured on the scatter at a constant distance.

Further, in the above structure, a plurality of clamp mechanisms having a clamp jig for holding the object to be measured and a drive mechanism for operating the clamp jigs to hold or release the object to be measured are fixed frames. Provided on both sides of
Each of these clamp mechanisms can be controlled by remote control.

Further, in the above structure, a water splash prevention mechanism having a shielding plate which is connected to the scooter so as to respond to the curved shape of the object to be measured and which prevents splash of water sprayed from the nozzle of the scatter. Is provided.

[0011]

In the ultrasonic nondestructive inspection device having such a structure, the support frame is moved vertically along the support pillar by the Z-axis drive mechanism, the movable carriage is moved forward by the Y-axis drive mechanism, and The scooter is horizontally moved along the support frame by the X-axis drive mechanism while rotating the fixed frame on which the measured object is fixed by the A-axis drive mechanism, and the distance between the scatterer on the receiving side and the measured object by the S-axis drive mechanism. By using the 5-axis control to adjust the object, the object to be measured can be accurately positioned on the scatter with a certain distance, and the object to be measured of the composite material having a curved surface can be non-destructed only by scanning the scatter part. Since the inspection can be performed, the entire device can be made light and compact, and the speed can be increased.

Further, the clamp mechanism attached to the fixed frame is remotely operated to control the drive mechanism to operate a plurality of clamp jigs for grasping both sides of the object to be measured to grasp or hold the object to be measured. Since it is possible to release the object, the object to be measured can be easily handled.

Furthermore, since the water splash prevention mechanism connected to the scatter responds to the curved shape of the object to be measured, the splash of water sprayed from the nozzle of the scatter can be prevented by the shielding plate. Non-destructive inspection of the object to be measured can be performed with good efficiency and stability.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1, 2, and 3 are a front view, a plan view, and a side view showing a configuration example of an ultrasonic nondestructive inspection apparatus according to the present invention. In FIGS. 1, 2 and 3, reference numeral 1 denotes a base, and two columns 2 are provided at rear positions on the left and right sides of the base 1 in the figure.
Are vertically attached, and their upper ends are connected by a connecting member 3. Further, guide mechanisms 4 are provided in the vertical direction on the opposite surface sides of the columns 2, and both ends of a support frame 5 arranged in parallel with the connecting member 3 are fitted into the guide mechanisms 4. It is held in a movable manner in the vertical direction (Z-axis direction in the drawing) by a drive mechanism (not shown).

A pair of guide members 5a are attached to the lower end of the support frame 5, and a pair of scooters 6 are attached to the guide members 5a so that the ultrasonic signal transmitting and receiving sides are opposed to each other, and a drive mechanism (not shown) is provided. Is supported so as to be movable in the horizontal direction (X-axis direction in the drawing). In this case, a control motor for adjusting the distance in the facing direction (S-axis direction) is connected to each scooter 6.

On the other hand, the reference numeral 7 designates a pair of tracks 8 which are laid on the base 1 while being appropriately separated from each other, in the front-rear direction in the drawing (Y-axis direction in the drawing).
A pair of columns 9 are vertically mounted on the left and right sides of the figure in the figure, and a clamp frame 11 for holding an object to be measured 10 is provided between the upper ends of the columns. Approximately the center of both sides of 11 is supported by a rotating mechanism 12 attached to the upper end of the pillar 9 so as to be rotatable in the front-rear direction in the drawing (the A-axis rotating direction in the drawing) about the support point. In addition, the actuator 1 is attached to one side of the moving carriage 7.
3, the drive transmission shaft of the actuator 13 and the rotating mechanism 12 are connected by a connecting shaft 14 so that the driving force can be transmitted so as to rotate the left and right rotating mechanisms 12 in synchronization with each other. It has become.

Further, the clamp frame 11 has a plurality of (three in each of the left and right in this embodiment) clamp mechanisms 1 for remotely controlling the object to be measured 10 on both the left and right sides thereof.
5 are attached respectively.

Details of the clamp mechanism 15 will now be described with reference to FIGS. 4 and 5. FIG. 4 shows the clamp frame 1
FIG. 6 is a front view showing a partial cross-section of one of the six clamp mechanisms 15 attached to 1, and FIG. 5 is a plan view of the same. 4 and 5, reference numeral 40 denotes a clamp mechanism main body. An upper arm 42, to which an upper clamp pad 41 for holding the object to be measured 10 is fixed, is fixed to the clamp mechanism main body 40 by a bolt or the like. ° It is rotatably connected. In addition, the clamp mechanism body 40
Inside, there is a linear motion rail 47 and a guide 48 for moving the upper arm 42 in the vertical direction, and the upper cylinder 4
There is provided a toggle mechanism 44 that amplifies the operating force of the slide shaft 45 connected to 6 several times and transmits it to the upper arm 42.

Similarly, the lower clamp pad 49 for holding the object to be measured 10 is fixed to the lower arm 5 by bolts or the like.
0 is also connected to the support pin so as to be rotatable by 90 degrees, and a toggle mechanism is provided for amplifying the operating force of the slide connected to the lower cylinder 51 several times and transmitting it to the lower arm 50. .

Reference numeral 52 denotes a clamp frame in which a central portion in the longitudinal direction of the clamp mechanism main body 40 is mounted so that the entire clamp mechanism can rotate 90 degrees around a rotary shaft 53. The clamp frame 52 is operated by a control signal. A drive motor 54 is attached, and its rotation can be transmitted to the rotary shaft 53 via a belt 55.

Next, an example of the peripheral structure including the pair of scooters 6 moving in the X direction along the guide member 5a of the support frame 5 will be described with reference to FIGS. FIG. 6 is a view schematically showing a part to which the scatter is attached and a water circulation system, and FIG. 7 is a partial view showing an attachment state of accessories when the scatter is attached. 8 and 9 are plan views showing a state in which a jig for preventing water splash is attached near the scooter.

In FIG. 6, reference numeral 61 denotes a transmissive probe provided in the case of the scooter 6, and the transmissive probe 6 is attached by a bolt (not shown). Further, a water supply hose 62 is connected to the case of the scooter 6, and when the water supplied by the pump 63 is supplied into the case of the scooter 6, this water is jetted from the nozzle to the object to be measured 10 and falls from this. Water constitutes a water circulation system in which water is collected in the water tank 64 and supplied again by the pump 63. Further, the scatter 6 uses the water column formed by the water jetted toward the object to be measured 10 as a transmission medium to form the transmission type probe 61.
It is configured to emit more ultrasonic waves and receive them.

In FIG. 7, reference numeral 71 denotes an optical sensor which transmits a detection signal to a control device (not shown) through an optical fiber cable or the like when detecting that the distance from the object to be measured 10 is closer than the set value "C". The sensor 71 is held by a holding ring 72 attached to the outer peripheral portion of the nozzle of the scooter 6. Further, 73 is a bracket attached to the outer peripheral portion of the case of the scooter 6, and this bracket 73 is attached to a support body 74 with a plastic bolt 75.

In this case, the bolt 75 made of plastic
Is set to have a strength such that if the scooter 6 collides with another structure, the tip of the bolt will break before the scatter 6 breaks. Further, when the breakage of the bolt is detected by a sensor (not shown), the drive mechanism of the scooter 6 movably held by the guide member 5a can be stopped. Further, the bracket 73 is connected to the support body 74 by a chain 76 so as to prevent the scooter 6 from falling when the bolt is broken.

FIGS. 8 and 9 are views showing an example of the structure for preventing the spray of water sprayed from the nozzles of the pair of scooters 6, and FIG. FIG. 9 shows a state in which the scatter end is slightly detached from the end of the object to be measured 10 and the flaw detection at the outermost end is completed and the sheet is fed in the reverse direction.

In FIG. 8 and FIG. 9, 81 is an arm for holding a lever 83 rotatably by a pin 82 at one end on both sides of the upper part of the bracket 73, and the other end of the lever 83 of this arm 81 is at the other end. A ball 84 rolling on the measurement surface of the DUT 10 is supported. A spring 85 is stretched between the arm 81 and the bracket 73 so that the ball 84 can follow the contour shape of the DUT 10. Further, a shield plate 86 is attached to the lever 83 to cover the falling range of the water sprayed toward the DUT 10.

In this case, when the object 10 to be measured comes out of the center of the scooter 6, the water columns flowing from the pair of scooters 6 collide with each other concentrically and the water scatters in the side direction.
The shielding plate 86 is stopped at a position of 90 degrees by the follow-up mechanism including the ball 84 and the spring 85 described above, and it is possible to prevent water from splashing in the side direction.

Next, the operation of the ultrasonic nondestructive inspection device constructed as described above will be described. The object to be measured 10 having a curved shape is placed on the clamp frame 11, and the clamp mechanism 1
An operation for detecting flaws while being clamped by 5 and holding the distance between the pair of scatterers 6 and the object to be measured 10 at a predetermined constant distance will be described with reference to FIGS. 10 to 12.

First, in FIG. 10, the clamp frame 11 is kept in a horizontal state, and the upper clamp pad 41 (FIG. 4) of the clamp mechanism 15 is opened by 90 degrees so that the surface of the object to be measured 10 is lifted by a crane (not shown). It is vacuum-adsorbed and placed on the clamp frame 11 and positioned.

Next, the upper clamp pad 41 is closed and the upper and lower surfaces of the object to be measured 10 are clamped by the clamp mechanism 15. When the setting of the object to be measured 10 is completed in this way, as shown in FIG. 1, the support frame 5 is guided by the guide mechanism 4 of the support column 2 by a drive mechanism (Z-axis drive mechanism) not shown.
Along the line so that the state shown in FIG. 10 is obtained. At the same time, the movable carriage 7 is moved forward by a drive mechanism (Y-axis drive mechanism) (not shown), and the clamp frame 11 is rotated by the rotation mechanism 12 (A-axis drive mechanism) as shown in FIG. While rotating the scooter 6 in the horizontal direction, the drive mechanism (X
1 to be measured by traversing with a shaft drive mechanism).
The scan of the curved surface of 0 is executed.

At this time, the scatter 6 on the receiving side is moved by the control motor (S-axis drive mechanism) 16 in the direction of approaching the surface to be measured in order to adjust the distance S from the object to be measured 10. This clearance adjustment can expand the safety range when adjusting the position by manual operation or the like.

Further, when the support frame 5 descends in the Z-axis direction and the rotation of the clamp frame 11 progresses, the state shown in FIG. 11 is reached, and finally the support frame 5 and the scooter 6 are moved as shown in FIG. When the position reaches the lowest position, the flaw detection inspection ends.

Further, in the flaw detection of the clamped block, the six clamp mechanisms 15 are retracted one by one in response to a control signal from the control device, and after the flaw detection is finished, the clamp mechanism 15 is re-clamped and is progressively fed to clamp all six blocks. By detecting the location, it is possible to perform flaw detection measurement on all surfaces of the DUT 10.

Here, control of each drive mechanism and drive motor in the X-axis direction, Y-axis direction, Z-axis direction, A-axis direction, and S-axis direction of the ultrasonic nondestructive inspection device, and an image of the flaw detection measurement signal of the scatterer 6 will be described. Regarding processing, the system configuration will be briefly described with reference to FIG.

In FIG. 13, a drive mechanism and a control motor in each direction (not shown) follow the curved surface of the DUT 10 by the control driver 300 based on an instruction from the control unit 301 for controlling the 5-axis, and the ultrasonic probe 302 The transmitted ultrasonic waves are sent to the scatter 6 which holds the transmission probe 61, and the flaw detection is started. In addition, the clamp mechanism 15 automatically retracts the clamp location according to an instruction from the 5-axis control unit 301, and flaw detection is performed for each clamp block at one location.
Finish all flaw detection.

Further, the data obtained from the 5-axis control unit 301 and the transmission type probe 61 is input to the image processing unit 304 through the high speed optical communication path 303, and the image processed data is stored in the optical disc 305. Here, a system for managing data is configured.

In the image processing system of the flaw detection measurement signal from the control unit of the ultrasonic nondestructive inspection device and the scatter, the panel whose defect location and defect size are known in advance is fixed in the device and the ultrasonic wave is automatically transmitted. Alternatively, the ultrasonic image inspection of the object to be measured may be started after the predetermined performance is self-diagnosed.

Further, it is possible to divide into a plurality of blocks according to the shape and size of the object to be measured 10 and perform ultrasonic inspection in the order of division or in any block.
By subjecting the result to image processing and displaying an arbitrary block, the entire object to be measured can be comprehensively evaluated.

As described above, in this embodiment, the support frame 5
Is moved up and down along the column 2 by the Z-axis drive mechanism, the moving carriage 7 is moved forward on the track 8 by the Y-axis drive mechanism, and the clamp frame 11 on which the DUT 10 is clamped is driven by the actuator 13. Rotating mechanism 1
The scooter 6 is horizontally moved along the support frame by the X-axis drive mechanism while being rotated by 2 (A-axis drive mechanism), and the receiving side scatter 6 is moved by the S-axis drive mechanism by the control motor 16 to the object to be measured 10. Since the object 10 to be measured can be accurately positioned on the scooter 6 at a constant distance by the 5-axis control for adjusting the distance, the object 10 to be measured of the composite material having a curved surface can be measured only by scanning the scatter part. It is possible to perform destructive inspection, and it is possible to make the entire device compact by reducing the weight of the probe portion, and it is possible to correspond to high speed scanning.

Further, the upper cylinder 46, the lower cylinder 51 and the drive motor 54 are controlled by remote operation of the plurality of clamp mechanisms 15 mounted on the clamp frame 11 to operate the clamp mechanism main body 40 and to measure the object to be measured. 10
Since the object to be measured is grasped or released by the upper clamp pad 41 and the lower clamp pad 49 which grasp both sides of the object 10, the object 10 to be measured can be easily handled.

Further, arms 81 for rotatably holding the lever 83 are provided on both sides of the upper portion of the bracket 73 attached to the outer peripheral portion of the scooter 6, and the measurement surface of the object to be measured 10 is attached to the other end of the lever 83. The rolling ball 84 is supported, and the shielding plate 86 attached to the lever 83 by the spring 85 stretched between the arm 81 and the bracket 73 is moved while responding to the curved surface of the DUT 10. Since the water splash prevention mechanism is provided so as to cover the falling range of the water jetted toward the DUT 10, the splash of water jetted from the nozzle of the scatter 6 can be prevented by the shielding plate 86. A highly efficient and stable nondestructive inspection of the measured object can be performed.

In the above embodiment, the scanning of a complicated curved surface shape has been described, but the flat plate shape by the XZ scan can also be clamped and flaw-detected in the same manner as described above, and can be inserted in the frame of the support frame. For example, it is possible to detect flaws with a cylindrical shape.

FIG. 14 is a perspective view showing an application example of a mechanism for moving and clamping an object to be measured in the ultrasonic nondestructive inspection device section. As shown in FIG. 14, the carriage 211 has a track 21.
2 to move the object to be measured 213 in and out of a support frame (not shown), and a holder 214 for fixing the object to be measured 213 is provided on the carriage 211. Both side portions are rotatably supported by the support member 215, and the rotational force is transmitted by the drive mechanism 216. Reference numeral 217 is a control device that controls each motor.

[0044]

As described above, according to the present invention, non-destructive inspection by ultrasonic waves of an object to be measured having a complicated curved surface shape can be performed by simple 5-axis control.
Since the weight of the probe can be reduced, it can be used for high-speed scanning, and the automation of the clamp can reduce the time required for flaw detection, and can automate the calibration and prevent the splashing of water. It is possible to provide a scanning-type ultrasonic nondestructive inspection device.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an ultrasonic nondestructive inspection apparatus according to the present invention.

FIG. 2 is a plan view of the same embodiment.

FIG. 3 is a side view of the embodiment.

FIG. 4 is a front view showing a partial cross section of one clamp mechanism in the embodiment.

FIG. 5 is a plan view of the clamp mechanism.

FIG. 6 is a diagram schematically showing a part to which a scooter is attached and a water circulation system in the embodiment.

FIG. 7 is a partial view showing an attachment state of accessories when the scooter is also attached.

FIG. 8 is a diagram showing an operating state of the water splash prevention mechanism during flaw detection on the measured object in the example.

FIG. 9 is a diagram showing an operating state of the water splash prevention mechanism when the flaw detection of the outermost portion is finished and the sheet is reversely fed.

FIG. 10 is a side view showing the operation state of FIG. 1 at the end of setting the object to be measured in the embodiment.

FIG. 11 is a side view showing the operation state of FIG. 1 when the curved surface scan of the object to be measured is executed.

FIG. 12 is a side view showing the operation state of FIG. 1 at the end of the flaw detection result of the device under test.

FIG. 13 is a block diagram showing a system configuration of a control unit and an ultrasonic image processing unit in the ultrasonic nondestructive inspection apparatus according to the embodiment.

FIG. 14 is a perspective view showing an application example of a mechanism for moving and clamping an object to be measured in the ultrasonic nondestructive inspection device section.

[Explanation of symbols]

1 ... Base, 2 ... Strut, 3 ... Connecting member, 4 ... Guide mechanism, 5 ... Support frame, 5a ... Guide member,
6 ... Scooters, 7 ... moving carriages, 8 ... orbits, 9 ...
Pillar, 10 ... DUT, 11 ... Clamp frame, 12 ...
Rotation mechanism, 13 ... Actuator, 14 ... Connecting shaft,
15 ... Clamp mechanism, 16 ... Control motor, 40 ...
Clamp mechanism main body, 41 ... Upper clamp pad, 42
...... Upper arm, 43 ...... Support pin, 44 ...... Toggle mechanism, 45 ...... Slide shaft, 46 ...... Upper cylinder, 47
...... Linear rail, 48 ...... guide, 49 ...... lower clamp pad, 50 …… side arm, 51 …… lower cylinder, 52 …… clamp frame, 53 …… rotating shaft, 54 …… drive motor , 55 …… Belt, 61 …… Transmissive probe, 6
2 ... Water supply hose, 63 ... Pump, 64 ... Water tank, 7
1 ... Optical sensor, 72 ... Retaining ring, 73 ... Bracket, 74 ... Support, 75 ... Plastic bolt, 76 ... Chain, 81 ... Arm, 82 ... Pin, 83
...... Lever, 84 …… ball, 85 …… spring, 86…
...... Shading plate, 300 ...... Control driver, 301 ...... 5-axis control control unit, 302 ...... Ultrasonic probe, 303 ...... Optical communication path, 304 ...... Image processing unit, 305 ...... Optical disk.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiaki Mizunuma 1-2-7 Nishishinjuku, Shinjuku-ku, Tokyo Within Fuji Heavy Industries Ltd. (72) Inventor Shigenari Someya 1-2-7 Nishishinjuku, Shinjuku-ku, Tokyo No. Fuji Heavy Industries Ltd. (72) Inventor Satoru Yanaka 4-4 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Inside Keihin Office, Toshiba Corporation (72) Inventor Mikihiko Fukuzawa 2-chome, Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Toshiba Keihin Office

Claims (3)

[Claims] 1. A nozzle for forming a water column for jetting water toward an object to be measured having a transmissive ultrasonic probe and a curved surface and propagating ultrasonic waves transmitted and received by the transmissive ultrasonic probe. An ultrasonic nondestructive inspection device for nondestructive inspection of the object to be measured using a pair of scooters having a pair of scooters vertically mounted on a base at appropriate intervals and provided with guide mechanisms on opposite sides. And a pair of scooters, which are horizontally held between the stanchions and are held by the guide mechanism of each stanchion so as to be movable in the vertical direction. A support frame that is adjustable so as to be movable in the horizontal direction, a movable carriage that is provided on a base below the pair of columns so as to be movable in a direction orthogonal to the moving direction of the scooter, and A Z-axis drive mechanism for vertically driving the support frame, which includes a fixed frame that is rotatably attached to columns vertically attached to both sides of the moving carriage and that fixes the object to be measured; An X-axis drive mechanism for driving the carriage horizontally along the support frame, a Y-axis drive mechanism for driving the moving carriage in a direction orthogonal to the moving direction of the scooter, and a fixed frame for moving the moving carriage forward and backward. By providing an A-axis drive mechanism for turning and an S-axis drive mechanism for adjusting a facing distance between the receiving side of the scatter and the object to be measured, and controlling the drive mechanism of each of these axes, the object to be measured is controlled. An ultrasonic non-destructive inspection apparatus for non-destructive inspection of the object to be measured while positioning the scatter at a constant distance. 2. A plurality of clamp mechanisms, each having a clamp jig for gripping an object to be measured and a drive mechanism for operating these clamp jigs to grip or release the object to be measured, on each side of a fixed frame. The ultrasonic non-destructive inspection apparatus according to claim 1, wherein each of these clamp mechanisms is controllable by remote control. 3. A water splash prevention mechanism provided with a shielding plate, which is connected to the scooter so as to respond to the curved shape of the object to be measured, and which has a shielding plate for preventing splash of water sprayed from the nozzle of the scatter. The ultrasonic nondestructive inspection device according to claim 1.