JPH0427859A - Ultrasonic flaw detection tester - Google Patents

Abstract

PURPOSE:To perform an ultrasonic flaw detection test of good quality by separating a drive mechanism part and a water tank provided with a flaw detection probe. CONSTITUTION:This apparatus is constituted of the water tank 2 provided with a flaw detection probe 2 running on a product 1 to be tested and a running truck 4 provided with a drive mechanism part subjected to rotary motion. The moving quantity detector 9 provided to the running truck 4 detects the moving quantity of the running truck 4 through the follower wheel 10 held against the product 1 to be tested and can perform the positioning control of the defective region of the product 1 to be tested. By this constitution, the drive wheel 7, press rollers 8, 11 and follower wheel 7 of the drive mechanism part subjected to rotary motion provided in the water tank can be separated from the water tank and the air bubbles and turbulent flow of water in the water tank can be eliminated and the quality of an ultrasonic flaw detection test is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an ultrasonic flaw detection testing device for detecting damaged parts of a test object.

(Prior Art) Generally, in an ultrasonic flaw detection testing device, a flaw detection probe is housed in a water tank, and a drive mechanism for driving the flaw detection probe is also housed in the water tank.

That is, conventionally, a flaw detection probe for flaw detection and a drive mechanism for moving the water tank were provided in the water tank, and the water tank was moved over the test item while filling the tank with deaerated water.

(Problem to be Solved by the Invention) However, in such a conventional device, since the drive mechanism for running and moving is located inside the water tank, air bubbles and turbulent flow of water are generated in the water tank due to its rotational movement. do. This air bubble and water turbulence significantly deteriorates the quality of the ultrasonic flaw detection test. For this reason, a high quality ultrasonic flaw detection testing device was desired.

An object of the present invention is to separate the drive mechanism that involves rotational movement, which is the cause of air bubbles and water turbulence in the water tank, from the water tank in which a flaw detection probe is installed. The present invention provides an ultrasonic flaw detection testing device.

[Structure of the invention]

(Means for Solving the Problems) The present invention has a structure in which a water tank equipped with a flaw detection probe for flaw detection and a traveling cart equipped with a drive mechanism that runs on a test article and which performs rotational motion etc. are separated. , the water tank is attached to a traveling trolley and is driven over the product under test. The ultrasonic flaw detection device is also capable of controlling the amount of travel by detecting the amount of movement of the traveling truck using a travel amount detector such as a pulse encoder provided on the traveling truck.

(Function) In the present invention, the flaw detection probe for flaw detection performs an ultrasonic flaw detection test on a test item in a water tank filled with deaerated water. Connect with. As a result, the water tank and the traveling trolley move simultaneously over the test product, making it possible to perform ultrasonic flaw detection tests on the test product continuously.

Further, a movement amount detector such as a pulse encoder provided on the traveling cart detects the movement amount of the flaw detection probe in the water tank, and controls the positioning of defective parts of the test article.

(Example) The following is a first example of an ultrasonic flaw detection testing device according to the present invention.
This will be explained with reference to the figures and FIG.

FIG. 1 is a plan view thereof, and FIG. 2 is a side view thereof. The ultrasonic flaw detection testing device according to the present invention runs over a test object 1, and is composed of a water tank 3 in which a flaw detection probe 2 is installed, and a running cart 4 in which a drive mechanism unit that performs rotational movement or the like is installed. has been done.

The water tank 3 has a skeleton made of a lightweight machine such as aluminum, a side plate made of transparent material such as acrylic, and a flaw detection probe 2 for flaw detection.
is fixed to the water tank 3 with a mounting bracket. Further, the water tank 3 is supplied with deaerated water from the deaerated water tank via a pump, and is always filled with this deaerated water.

The water tank 3 is provided with a slit-like crack in accordance with the shape of the product to be tested 1, and a water sealing material 13 is used to prevent water leakage and adjust the movement resistance of the water tank to such an extent that it does not become excessive.

The water sealing material 13 is also attached to the lower surface of the water tank 3 with an adhesive or the like to prevent water from leaking from the gap between the product under test 1 and the water tank 3, and to adjust the movement resistance of the water tank 3 to an extent that does not become excessive. are doing.

The water tank 3 has a structure that can be connected to a traveling carriage 4, which will be described later, using bolts, nuts, etc.

Next, the traveling truck 4 is made of a lightweight material such as aluminum, and a traveling drive motor 5 is attached to it via a speed reducer 6 with bolts or the like. The drive wheel 7 is connected to the speed reducer 6, holds the presser roller 8 and the product under test 1 with a spring or the like, and transmits the driving force of the traveling drive motor 5 by the friction force thereof.

A driven wheel 10 connected to a movement amount detector 9 such as a pulse encoder and a presser roller 11 are sandwiched by a spring or the like, and the driven wheel 10 rotates due to the frictional force, and the movement amount detector 9 is connected to a traveling trolley. Detect the amount of movement of 4. The bearing rollers 12 are attached to the traveling carriage 4, and the bearing carries the entire weight of the traveling carriage 4 while traveling over the test object 1. The traveling cart 4 has a structure that can be connected to the water tank 3 with bolts, nuts, etc.

A flaw detection probe 2 for ultrasonic flaw detection tests an ultrasonic flaw detection test on a test object 1 in a water tank 3 filled with deaerated water, and a running trolley 4 equipped with a drive mechanism that performs rotational movement. By connecting the water tank 3 and the water tank 3 with bolts, nuts, etc., the water tank 3 and the traveling cart 4 move simultaneously over the test object 1, and the ultrasonic flaw detection test of the test object 1 can be carried out continuously.

A movement amount detector 9 such as a pulse encoder provided on the traveling cart 4 detects the amount of movement of the traveling cart 4 via a driven wheel 10 pressed against the product under test 1, and detects defective parts of the product under test 1. positioning control is possible.

As a result, the drive wheel 7, presser rollers 8, 11, and driven wheel 10 of the drive mechanism part that is provided in the water tank and that involves rotational movement, etc.
By separating the water to the outside of the water tank 3, air bubbles and turbulent flow of water within the water tank 3 can be eliminated.

Furthermore, since a traveling carriage 4 is provided separately, and a drive mechanism unit that performs the above-mentioned rotational movement is provided on the traveling carriage 4, the quality of the ultrasonic flaw detection test is improved.

In the above embodiment, in order to eliminate air bubbles and water turbulence in the aquarium, the drive mechanism that causes rotational movement, etc. is separated outside the aquarium. The part may be constituted by a drive mechanism part that involves linear motion or the like, for example, a cylinder or the like.

Further, although the water tank and the traveling carriage are separated so as to be connectable by bolts and nuts, they may be manufactured integrally by providing a partition between the water tank and the traveling carriage.

〔Effect of the invention〕

As described above, in the present invention, the drive mechanism part that involves rotational movement, etc., which is the cause of bubbles and water turbulence in a water tank equipped with a flaw detection probe for ultrasonic flaw detection tests, is separated to the outside of the water tank. By doing so, it is possible to eliminate the generation of air bubbles and water turbulence. Therefore, a high-quality ultrasonic flaw detection test can be performed without adversely affecting the ultrasonic waves between the flaw detection probe and the product under test.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an ultrasonic flaw detection test apparatus according to the present invention, and FIG. 2 is a side view thereof. 1... Product under test 2... Flaw detection probe 3
...Water tank 4...Traveling cart 5...Traveling drive motor 7...Drive shaft 9...Movement inspection device 11...Press roller 6...Reducer 8...Press roller 10 ... Driven wheel 12 ... the bearing is a roller

Claims (2)

[Claims] (1) An ultrasonic flaw detection probe for detecting damaged parts of the product under test; a water tank that houses the ultrasonic flaw detection probe and filled with deaerated water; Ultrasonic flaw detection testing equipment consisting of a moving trolley. (2) An ultrasonic flaw detection probe for detecting damaged parts of the product under test, a water tank containing the ultrasonic flaw detection probe and filled with degassed water, and a water tank to which the water tank is attached and which is used to detect damaged parts of the product under test. An ultrasonic flaw detection testing device comprising a traveling trolley and a movement amount detector mounted on the traveling trolley to detect the amount of movement of an ultrasonic flaw detection probe in the water tank.