JPS59143955A - Adjusting and moving apparatus for probe core - Google Patents

Abstract

PURPOSE:To obtain the titled apparatus capable of always performing the core adjustment of a probe and moving the prove even along the bent object to be inspected, by arranging members each for performing the movement and core adjustment of the probe to the front and rear of said probe while connecting the moving members and the probe by a flexible connector. CONSTITUTION:An ultrasonic probe 1 is connected to a front probe core adjusting and probe moving member 8a and a rear probe core adjusting and probe moving member 8a by a flexible member which is, in turn, constituted by arranging a wire 10 as a center and a coil spring 6 surrounding said wire 10. Four arms 14 are respectively attached to a base plate 15 through pins 16 in a rotatable manner and a guide roller 9 and a pawl 12 are attached to each arm 14 while each pawl 12 are engaged with two brackets 13 moving by a motion shaft 17. These backets 13 are pressed to the side of an apparatus advancing direction by springs 6. The pressing force of each spring 6 presses each roller 9 to the inner surface of a pipe 1 through the pawl 12 and the arm 14 to adjust the core of the ultrasonic probe 1 so as to position the same on the central axis of the pipe 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for aligning and moving an ultrasonic probe, and more particularly to an apparatus that can perform alignment within a subject and is movable even within a bent subject.

For example, in the case of a tube body used as a boiler tube, since a high temperature and high pressure fluid is passed through the tube body, it is necessary to sufficiently inspect the tube body for flaws, uniformity of wall thickness, etc. in advance.

FIG. 1 shows a conventional ultrasonic flaw detection device, which is constructed so as to be able to move and align within a tube that is an object to be inspected. Reference numeral 1 denotes a probe, which is attached to a rod-shaped support member 20. For this support member 20, moving parts vJ'21a and 21b are provided at the front and rear of the probe 1. Guide rollers 2 are attached to these moving members, and each roller is pressed by a spring 3 via an arm 22 against the inner wall side of a tube body 23, which is the object to be examined, so that the probe 1 is moved inside the tube body 23. It is configured to be located approximately on the central axis. This device; σ works effectively when the subject is a straight pipe, but because the support member 20 is a non-flexible rod-like body, it cannot be moved around bends in the pipe and cannot be used. becomes.

SUMMARY OF THE INVENTION An object of the present invention is to provide a probe alignment and movement device that eliminates the above-mentioned problems, allows constant alignment of a probe, and allows the probe to be moved even in a bent subject.

In short, the present invention is an apparatus in which members for moving and aligning are arranged before and after a probe, and these moving parts (a) and (and the probe) are connected by a flexible material.

Examples of the present invention will be described below.

In FIG. 2, the ultrasonic probe 1 is connected to a front alignment moving member 8a and a rear alignment moving member 8 by means of a flexible connecting body.
connected to b. Various flexible connectors can be used, but in the case shown, the wire 10 is in the center.
A flexible connection body is obtained by arranging the coil spring 6 around the coil spring 6. Next, the structure of the alignment moving member will be explained using the rear alignment moving member 8b as an example.

Reference numeral 15 denotes a plywood board constituting the main body of the alignment moving member, and the arms 14 are rotatably attached to this plywood board via pins 16. As shown in FIG. 3, four arms 14 are attached so as to form a frontal cross shape, and two sets of these four arms are attached to one centering moving member.

9 is a guide roller attached to each arm 14. A claw 12 is attached to each arm 14, and the winter melon 1
2 is engaged with two brackets 13 which are moved by a movement shaft 17. These brackets 13 are pressed in one direction by a spring 6 of a flexible connector located at the rear of the moving member. This pressing force is transmitted to the arm 14 via the claw 12, and the side end of the arm 14 where the guide roller is attached tends to rotate toward the outside of the tube body 11 about the pin 16. As a result, roller 9
is pressed against the inner surface of the tube 11, and the ultrasonic probe 1 is aligned so as to be positioned on the central axis of the tube body 1. The front centering moving member 8a also has the same structure as the rear centering moving member described above.

In the device having the above configuration, when the device is pushed by the flexible tube 4 and advances inside the tube body 11, the flexible connecting member bends in accordance with the bent state of the tube even at the bent portion, so the device does not malfunction. The ultrasonic probe can easily travel inside the body, and the ultrasonic probe is always positioned on the +li+l+ line at the center of the tube, allowing for proper flaw detection and wall thickness measurement. Note that the received ultrasonic echo is converted into an electrical signal and transmitted via the cord 18 to a display device outside the subject.

FIG. 4 shows another embodiment of the invention. Reference numeral 25 denotes a ball, which extends in the circumferential direction of the tubular body 11 by ml and balls (for example, 4 fl!).
A ball bearing is constructed by attaching the supporting body 26 divided into 1). Each ball bearing is in contact engagement with a tapered pin 27, and further has a tapered pin 27.
7 is pressed by a spring 6. Therefore, each ball bearing is pressed toward the inner wall surface of the tubular body 11, and the ultrasonic probe 1 is aligned.

By carrying out the present invention, the ultrasonic probe can be moved even at a bent portion of the tube body, and can be used for a multi-shaped object.

In addition, the probe can be constantly aligned, and flaw detection, wall thickness measurement, etc. of the object to be examined can be performed accurately.

[Brief explanation of drawings]

FIG. 1 is a side view of a conventional ultrasonic flaw detection device, FIG. 2 is a plan view of a probe alignment moving device according to the present invention, and FIG.
FIG. 41, a parent diagram taken along the line A--A in the figure, is a sectional view of the probe moving device without showing another embodiment. 6...Coil spring 8a...Front alignment moving member 8b...Rear alignment moving member 9...Guide roller 10... Wire 11...Tube 13...Bracket 14...Arm 15...Bed plate (alignment moving member main body) 25...
... Ball 26 ... Support body 27 ... Taper pin Fig. 1 Fig. 2 A c Fig. 3

Claims (1)

[Claims] 1. In a device that detects flaws or measures wall thickness of a test object by moving a probe inside the test object, aligning moving members are arranged before and after the probe, and these aligning moving members are arranged before and after the probe. A probe centering moving device characterized in that a member and a probe are connected by a flexible connecting body. 2. The alignment moving member is comprised of a main body, an arm having a G roller at the end and rotatably attached to the main body, and a bracket for mounting the roller of this arm to rotate the side end toward the subject side. A probe alignment moving device according to claim 1, characterized in that it is comprised of: 3. Probe alignment movement according to claim 1, characterized in that the alignment movement member is composed of a ball hair link' and a tapered bin that moves this ball bearing toward the subject side. Device. 4. The flexible connecting body is a coil spring;
The probe alignment moving device according to any one of claims 1 to 3, characterized in that it is a wire disposed within the coil spring.