JPS58174844A - Support for supporting material to be examined by automatic ultrasonic flaw detector - Google Patents

Abstract

PURPOSE:To simplify while facilitating size changing work by a method wherein a guide roller is remotely or automatically controlled in such a manner as to set it at the prescribed position. CONSTITUTION:A pair of semicircle supporting frames 12 are used to support a roll 7 in such a manner as to sandwich the lower end tereof. The upper ends of the frames are coupled to a rod 14 with a pin, whereas the other end of the rod is extended up to the exterior of a hollow shaft 4. In the drawing, there is shown a material 6 to be examined when it has the maximum diameter, the material 6 to be supported by the rollers 7 and moved straightly. When the material to be examined is replaced with what has a small diameter, the supporting frames 12 will revolve around a pin 13 and the rollers will move up, if a lever 15 for reciprocally moving the connecting rod 14 is driven in the direction shown by the arrow. To drive the lever 15, the screw shaft is turned manually by means of a handle or electrically and automatically. Thus the operation of setting the position of the supporting rollers 7 can simply be done as the outside diameter of the material to be examined is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating probe type automatic ultrasonic flaw detection device having a built-in support roller for a test material.

Among conventional automatic ultrasonic flaw detection devices (hereinafter referred to as U8T) with rotating probes aimed at detecting flaws in round bars or pipes, there is a type 1-1, which shows only the portion through which the test material passes.

In Figure 1, (1) is the UST main body, (2a) to (2
d) Pinch rolls placed before and after (1), (3j is a probe holder with a built-in probe, (
4) is a hollow shaft for connecting and rotating the probe holder (8), (6) is a bearing for (b) rotationally supporting this hollow shaft (4), and (6) is a round bar or This is the material to be inspected, such as a pipe.

Next, the flaw detection method for the test material will be explained.

The material to be tested (6) is driven and conveyed in a straight line by pinch rolls (2a) to (2d) around UST (11) at the same time as the clamps. 3), the rotating probe scans the circumference in a spiral manner to perform flaw detection on the entire surface of the test material (6).

At this time, when the material to be inspected (6) is caught between the front and rear pinch rolls (2a) to (2d) as shown in Figure 1, the material to be inspected (δ) is conveyed in a straight state. No problem, but
When the tip or rear end of the test material (6) passes through the probe holder (ill), the test material (6) is moved by the front and rear pinch rolls (
2a) to (2d) are cantilever-supported by the isewaka, so natural deflection occurs due to its own weight, and the rotation centers of the test material (6) and the probe holder (31) do not match, which has a negative impact on flaw detection function. In addition, there is a risk that the test material (6) and the probe holder (3) will come into contact and cause damage to the machine.This phenomenon is particularly important for the rear end of the test material as shown in becomes noticeable when it passes.

In order to prevent this phenomenon, there has conventionally been a method shown in Fig. 8 and Fig. 4. That is, in FIGS. 8 and 4, (7
) is a support roll that receives the weight of the test material, (8) is a bearing for rotationally supporting the support row/I/(7), (9) is a disc for identifying this bearing (8), α0 ) is a guide pipe for supporting this disc (9), and is fixed at the stationary part (not shown) of the U'S'j main body (1) with 7 flange (1υ plane).With the above configuration, Vinci roll on the front (
2b), the deflection of the specimen iFA' (61) is limited by the support roll (7), and the specimen material (6) can pass through the probe holder (8) in an almost straight state. can.

Now, in a general UST, it is necessary to be able to detect not only one type of test material but also test materials having various outer diameter dimensions. For this reason, it is necessary to change the position of the support roll (7) according to the radius of the material to be tested each time the outer diameter of the material to be tested changes. However, in the conventional method shown in FIG. 3 and FIG. ), and it is necessary to prepare and replace these parts, but the former method requires work inside the hollow shaft (4), making accurate setting very difficult, and the latter method Since the number of parts is large, it becomes very expensive. In addition, both require a considerable amount of time to change the settings, which is a major bottleneck in reducing the time required to change the size of the test material for UST in general.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and the kite roller (7) is operated by remote control or automatic control to set the position, thereby simplifying and speeding up the size changing work. The purpose is to provide a satisfactory UST.

An embodiment of the present invention will be explained below with reference to the drawings.3 In Figs. 5 and 6, (7) is a roll that receives the weight of the material to be inspected, and (7) is a roll that receives the weight of the material to be tested. A pair of semicircular support frames are supported in a sandwiched manner, and the upper end is connected to a connecting rod (141) via a bottle, and the other end of this connecting rod is extended to the outside of the hollow shaft (4).03
) is a support frame (a bin that holds 12J in a rotatable state around this frame, ) is a lever for reciprocating the connecting rod (6), and (16) is a fixing part of the UST (not shown). ) on the 7 langes (1υ plane), and the above-mentioned bottle (1
3) and a guide pipe for fixing the rotation center of the lever (15).

Next, the operation will be explained. Figure 6 shows the material to be tested (6)
shows the case where the diameter is the maximum, and the material to be inspected moves straight without being supported by the rollers (7). If the material to be tested changes to a smaller diameter one, use the lever (15) installed on the outside of the UST.
When the support frame (b) is driven in the direction of the arrow, the bottle (13)
The roller (7) moves to the top. The lever (2) may be driven by turning the screw shaft with a manual knob, or it may be driven automatically by electric power. Figure 7 shows the state where the lever is set to the smallest specimen. shows.

In the above embodiment, the pipe guide (16) is shown as being pipe-shaped, but it may be arc-shaped if sufficient rigidity to support the weight of the material to be inspected is considered. In addition, the support roll (
7) shows the case where there is only one location, but if the length of the hollow shaft (4) is long and you want to install the support roll (7) at several locations, install the same bin (191, support frame) at that location. (B) is installed and connected to the connecting rod () with several wrinkled supporting rolls (
7) can be set at the same time.

As described above, according to the present invention, it is possible to very easily set the position of the support roller (7) according to the change in the outer diameter of the material to be inspected, and it is possible to easily set the position of the support roller (7) according to the change in the outer diameter of the material to be inspected. It can be used commonly for material inspection, and exhibits excellent functionality in terms of operability, operating time, and cost.

[Brief explanation of drawings]

Figure 1 is an arrangement diagram showing the main parts of a conventional automatic ultrasonic flaw detection device, Figure 2 is an explanatory diagram of its operation, Figure 8 is a schematic diagram, and Figure 4 is a diagram showing how to support a test material using the conventional method. Fig. 8 is a view seen from the entrance side of the material to be inspected, Fig. 4 is a sectional view seen from the right angle direction of Fig. 8, and Figs. 5 and 6 show an embodiment of the present invention. 8, a diagram corresponding to FIG. 4, and FIG. 7 are explanatory diagrams of the operation. In the figure, (1) is the main body of the ultrasonic automatic flaw detection device, (2 &) ~ (
2d) is a pinch roll, (3) is a probe holder, (4)
is a hollow shaft, (11) is a test object, (γ) is a support roll, 0
2) is the support frame, (13) is the bottle, θ4) is the connecting rod,
(+51 is a lever, 06) is a guide pipe. In the drawings, the same reference numerals indicate the same or corresponding parts. Agent Ge Shu Xin - Figure 1 Figure 2 Figure 7 θ 31st Deposit Figure 4 Figure 6

Claims (1)

[Claims] A Takaido pipe is fixed to the stationary part of the main body and placed between the hollow shaft connected to the probe holder and the test material passing through it. A bottle is installed at a position facing the side of this guide pipe, and a pipe is supported by this bottle. a pair of support frames formed in a semicircular shape, a support roll rotatably attached below the support frames, one end connected with a pin above the support frame, and the other end connected to the hollow shaft. A test material support device for an automatic ultrasonic flaw detection equipment comprising a connecting rod extending to the outside.