JPH0329687Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a film holding device for radiographic testing that holds a film for conducting radiographic testing of welded parts etc. under high temperature conditions, and allows for quick and reliable attachment and detachment of a container containing the film. The purpose is to make it possible to

Generally, in the manufacturing process of steel structures such as pressure vessels, welded parts are subjected to various thermal histories. Therefore, it may be necessary to conduct a radiographic test while the test specimen is at a high temperature. For example, there is a case where a radiation transmission test is performed in a post-heated state immediately after welding, and defects such as slag entrainment, poor fusion, and blowholes are removed before proceeding to the next step.

By the way, conventionally, there is no suitable method for attaching and detaching a radiation transmission test film to and from a high-temperature test specimen, which poses a health and safety problem for workers.

This idea was made with the above-mentioned points in mind, and a radiation transmitting test film covered with a heat insulating material is placed inside a container consisting of a case and a lid, and a support rod is attached to the tip of each container on the circumference of the container. A plurality of supporting metal fittings equipped with the support rods are fixed, a threaded rod is inserted into a bearing at the tip of each of the support rods so as to be rotatable and can move forward and backward, and a nut for positioning the threaded rod is provided on both sides of the bearing, and a nut is provided on both sides of the bearing. The present invention provides a film holding device for radiographic testing, which is equipped with a magnetic base equipped with a switch at the tip of each threaded rod.

Therefore, according to this invention, the container containing the radiation transmission test film can be quickly and reliably attached and detached, and the safety and health of workers can be ensured.

Next, this invention will be explained in detail with reference to drawings showing one embodiment thereof.

In the drawings, 1 is a case, and 2 is a lid provided on the case 1 by a hinge 3 so as to be openable and closable.The case 1 and the lid 2 constitute a container 4. 5
1 is a fitting lock that closes the lid 2 to the case 1, 6 is a handle attached to both sides of the lid 2, 7 is a mounting plate fixed to each of the front and rear sides of the case 1, and 8 is a mounting plate 7 on the rear surface. The auxiliary metal fittings 9, which are slightly longer than the vertical length of the lid 2 fixed to the top and bottom, are vertical support metal fittings fixed to both the front mounting plates 7 and both the auxiliary metal fittings 8, and 10 is attached to the tip of each support metal fitting 9. The support rods are fixed horizontally and outwardly by nuts 11, and 12 is a bearing provided at the tip of each support rod 10.

13 is a threaded rod inserted into the bearing 12 so that it can swing freely, that is, rotate freely and move forward and backward; 14 is the bearing 1;
A spacer inserted through the threaded rods 13 on both sides of 2, 1
Numerals 5 and 16 are nuts or wing nuts screwed onto the threaded rods 13 on the outside of both spacers 14, and adjustably fix the position of the threaded rods 13 relative to the bearing 12. 1
7 is a magnet base fixed to the lower end of the threaded rod 13, and 18 is a switch for turning on/off the magnetic action of the magnet base 17.

19 is a film for radiographic testing; 20 is a heat insulating material; the film 19 is covered with a plurality of lower heat insulators 20, a circumferential heat insulator 20, and a plurality of upper heat insulators 20; Decorated.

When attaching the container 4, the container 4 is attached to the test specimen that has been marked in advance before welding.
The position of each threaded rod 13 with respect to the bearing 12, that is, the position of each magnetic base 17 with respect to the container 4, is adjusted. Then, one worker positions the container 4 by holding the handle 6 and applying each magnetic base 17 to the surface of the test specimen, and another worker turns on the switch 18 to fix the container 4 to the test specimen. do.

At this time, since the threaded rod 13 is rotatable on the bearing 12, the magnet base 17 comes into close contact with the test object even if the surface of the test object is curved.

Also, when removing the container 4, one worker holds the handle 6, and another worker turns off the switch 18 and removes it.

Therefore, the container 4 can be attached and detached easily and quickly, the time required for the operator to approach the hot test specimen is shortened, and the work can be carried out safely.
Moreover, it is not affected by the surface shape of the test specimen or the mounting direction of the container.

[Brief explanation of drawings]

The drawings show one embodiment of the film holding device for radiographic testing of this invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is a partially omitted plan view, and Figs. 3a and 3b are front side support fittings. FIGS. 4a and 4b are a front view and a cut side view of the rear support fitting portion. 1...Case, 2...Lid, 4...Container, 9...
Support fitting, 10...Support rod, 12...Bearing, 13
... Threaded rod, 15 ... Nut, 16 ... Butterfly nut, 17 ... Magnetic base, 18 ... Switch, 19 ... Film, 20 ... Insulation material.

Claims (1)

[Scope of utility model registration request] A container consisting of a case and a lid is equipped with a radiation transmission test film covered with a heat insulating material, and a plurality of supporting metal fittings each having a supporting rod at the tip are fixed to the circumferential surface of the container. A radiation rod in which a threaded rod is inserted into a bearing at the tip so as to be rotatable and freely advanced and retracted, a nut for positioning the threaded rod is provided on both sides of the bearing, and a magnetic base equipped with a switch is attached to the tip of each threaded rod. Film holding device for transmission testing.