JPH04109364U - Probe pressing device - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure that the probe hits the surface to be inspected perpendicularly even in the case of simple pressing by a robot or the like. [Structure] The top part 1 and the bottom part 2, which has a probe opening in the center and has wheels 3 on the lower surface in the forward and backward directions of the traveling direction, are vertically connected by a connecting rod 4, and the connecting rod 4 is slidably penetrated. , a moving body 5 is provided that moves between the lower surface of the top and the upper surface of the bottom. The movable body 5 is provided with movable body legs 6 on the left and right sides in the traveling direction, which slidably pass through the bottom portion 2. A moving body pressing spring 7 is provided between the upper surface of the moving body and the lower surface of the top, and a probe pressing spring 8 is provided at the center of the lower surface of the top. An outer frame 9 is provided around the bottom part 2 to restrain movement of the bottom part 2 in the traveling direction and in the left and right directions, and guide pins 10 rotatably connected to the bottom part 2 are attached to the outer frame 9 before and after the center of the bottom part 2 in the traveling direction. Slideably fit into the vertical elongated hole. A spring mounting plate 12 is provided in the center of this guide pin 10, and a bottom presser spring 11 is installed vertically between the outer frame 9 and the spring mounting plate 12.
will be established.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a probe pressing device for an ultrasonic flaw detection device.

0002

[Conventional technology]

Ultrasonic flaw detection equipment is a non-destructive test because the flaw detection part is relatively small and easy to carry. Widely used as a device. Send out ultrasonic waves and receive the reflected waves The probe uses liquid between it and the surface to be measured to improve the transmission of ultrasonic waves, but In other words, the contact surface of the probe with the target surface is in close contact with the target surface. It is important to press perpendicularly to the surface of the target, which improves flaw detection accuracy.

0003

[Problem that the idea aims to solve]

By the way, in recent years, robots have been used for inspection work in places with poor working environments. It is now widely used for ultrasonic flaw detection of piping, pressure vessels, etc. It is used. Conventionally, when an ultrasonic inspection was performed by a worker pressing a probe against a pipe, etc. In this case, the worker aimed the probe perpendicularly to the target surface, but the robot It is very difficult to apply it vertically. This means that the target surface is not necessarily a plane, but a circle. There are many cases where the circumferential surface is smooth but uneven, and it is difficult to probe along such a surface. It was sometimes extremely difficult to inspect the inspection area while applying the child vertically. .

0004 This invention was devised in view of the above-mentioned problems, and is a simple method using robots etc. In the case of pressing, we also provide a probe pressing device that brings the probe into vertical contact with the surface to be inspected. The porpose is to do.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has a probe opening at the top and center and a probe opening at the bottom. A bottom portion having wheels at the front and rear in the direction of travel, and the bottom portion and the top portion are vertically connected. A connecting body, which is slidably passed through the connecting body, has a probe opening in the center, and advances to the bottom surface. A movable body having movable body legs slidably penetrating the bottom portion in left and right directions; A moving body pressing spring provided between the upper surface of the body and the lower surface of the top; and a center of the lower surface of the top. and a head of the probe provided in the probe opening of the moving body and contained in the probe opening. a probe pressing spring that presses the and an outer frame that restrains movement in the left and right directions in the direction of travel, and The fitting is slidably fitted into a vertical elongated hole provided in the outer frame, and the bottom part is slidably fitted in the vertical elongated hole provided in the outer frame. A guide pin that serves as a rotational and vertical guide around the axis is connected to the outer frame. and a bottom pressing spring that presses the bottom in a vertical direction. In addition, the book The probe pressing device is gently held approximately perpendicular to the surface to be inspected using guide hardware, etc. ing.

[0006]

[Effect]

With the above configuration, the bottom wheel is able to prevent the force applied from the outer frame and the force from the outer frame from pushing the bottom wheel. Due to the force transmitted through the spring, the moving body legs also move from the bottom to the top. The force transmitted through the body pressing spring hits the surface to be inspected, but the It is not always the case that all the wheels in the direction are in contact with each other. Not all moving legs will hit. If the legs of the mobile unit are tilted to the left or right, One of them hits the surface to be inspected and pushes up the moving body. Then, the moving body pressing spring works. The device consists of a guide pin at the center, a top part, a bottom part, and a moving body, which is perpendicular to the surface to be inspected. The probe attached to this center is pushed perpendicularly to the surface to be inspected. Pressed by a spring. If it is tilted in either the front or back direction, either When the wheel hits the surface to be inspected, the force of the other bottom presser spring causes both wheels to hit. and press the probe perpendicularly to the surface to be inspected. This allows highly accurate ultrasonic flaw detection. Do it.

[0007]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a perspective view showing an embodiment of the present invention, with a part of the outer frame removed to reveal the inside. I have to. In the figure, 1 receives a vertical force P from the robot at the top. 2 is At the bottom, a rectangular plate is attached under the donut-shaped ring, and this plate also has a probe. It has an opening through which the tentacle 13 passes, and wheels 3 are provided at the front and rear on the lower surface of the flat plate. 4 connects the top and bottom 2 vertically with a connecting rod. 5 is a moving body that automatically slides the connecting rod 4. Using this as a guide, move up and down between the lower surface of the top part 1 and the upper surface of the bottom part 2, and It has moving body legs 6, one each on the left and right in the direction of movement, which slidably pass through the bottom 2. 7 is a moving body pressing spring attached between the lower surface of the top portion 1 and the upper surface of the moving body 5. 8 is The probe is attached to the center of the lower surface of the top part 1 with a probe holding spring, and is attached to the center of the movable body 5 and the bottom part 2. Press the head of the probe 13 set in the provided opening. 9 is the outer frame and the bottom 2 and its movement in the direction perpendicular to it (left-right direction) is restricted. 10 is a guide Two pins are provided in the front and back on the center line of the bottom part 2 in the direction of travel, and are used to cut off the joint with the outer frame 9. Both sides of the surface are vertical, and it is slidably fitted into the vertical elongated hole provided in the outer frame 9. and is rotatably engaged with the donut-shaped ring on the bottom part 2. 11 is spring mounting It is attached to the middle of the guide pin 10 in the length direction. 12 is the bottom presser The spring is installed vertically between the outer frame 9 and the spring mounting plate 11, and is inserted through the spring mounting plate 11. The guide pin 10 is in a suspended state. The bottom part 2 rotates around this guide pin 10. It can be moved vertically as well as vertically, and can be moved downwardly by the bottom presser spring 12. be forced to.

[0008] Next, the operation will be explained. The robot applies force to the outer frame 9 to position the surface to be inspected. Move to the position. Here, when a vertically downward force P is applied to the outer frame 9 and the top 1, the outer frame 9 and the top part 1 are A force acts on the bottom part 2 from the frame 9 via the bottom pressing spring 11, and at least one wheel 3 It hits the surface to be inspected, but not all wheels 3 hit it in the front and rear directions. There are also wheels 3 that are difficult to move and legs 6 of the moving body that do not hit in the left and right directions. At this time, wheel 3 does not hit. The force of the bottom presser spring 11 on the opposite side makes it hit both the front and rear wheels 3, and the left and right Regarding the moving body leg 6, a lifting force acts on the moving body 5 from the moving body leg 6 on the side that hit the moving body leg 6. . This lifting force generates a repulsive force in the moving body pressing spring 7, causing the moving body 5 to move downward. The bottom part 2 is pushed down and rotates about the guide pin 10 as the rotation axis, and the left and right moving bodies The legs 6 come into contact with the surface to be inspected, and have a structure consisting of a top part 1, a bottom part 2, and a connecting rod 4. The body is perpendicular to the plane to be examined. This allows the probe 13 in the probe opening to be detected. Since the probe is perpendicular to the surface to be inspected and the head is pressed by the probe holding spring 8, it is difficult to Ultrasonic flaw detection is possible.

[0009]

[Effect of the idea]

As is clear from the above explanation, according to the present invention, it is possible to freely slide between the top and the bottom. A moving body is installed to correct the inclination in the front, rear, left, and right directions, and a spring is installed in the vertical direction from the outer frame. The probe inserted into this device is pressed against the surface to be inspected. Set vertically.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention.

[Explanation of symbols]

1 top 2 Bottom 3 wheels 4 Connecting rod 5 Mobile object 6 Moving body legs 7 Moving body pressing spring 8 Probe holding spring 9 Outer frame 10 Guide pin 11 Bottom presser spring 12 Spring mounting plate 13 Probe

Claims (1)

[Scope of utility model registration request] Claim 1: a top part, a bottom part having a probe opening in the center and wheels on the lower surface in the forward and backward directions of the traveling direction, a connecting body vertically connecting the bottom part and the top part, and a connecting body that slides the connecting body. A movable body having a movable body leg that freely penetrates through the bottom and has a probe opening in the center and a movable body leg that slidably penetrates the bottom in the left and right directions in the traveling direction; a probe pressing spring provided at the center of the lower surface of the top and the probe opening of the moving body to press the head of the probe entered in the probe opening; an outer frame that is provided around the bottom and restrains movement in the traveling direction of the bottom and in the left and right directions in the traveling direction, and the outer frame engages with the bottom in the forward and backward directions of the traveling direction and is slidably fitted into a vertical elongated hole provided in the outer frame. A probe comprising: a guide pin that rotates about the traveling direction of the bottom portion and serves as a vertical guide; and a bottom presser spring that connects with the outer frame and presses the bottom portion in the vertical direction. Pressing device.