JPH0332964Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radiological examination apparatus, and more particularly to a film mounting device suitable for reducing setup time such as film mounting for photographing a small diameter pipe joint.

Conventionally, radiographic inspection of the axial joint of a small diameter pipe has been carried out by placing a known X-ray generator 1 outside the pipe 2 and emitting X-rays 3 onto the pipe 2 on a roller mount 4, as shown in FIG.
The defect 5a inside the joint part 5 is imaged onto the film 6 and judged by irradiating it with light.Generally, a worker crawls on his stomach inside the pipe 2 and inspects the pipe 2 at the position where it is necessary to photograph. The film 6 was manually crimped and attached to the inner wall, and a magnet 7 or the like was used to fix the film 6 to prevent it from falling.

With this method, two tubes are
It is necessary to crawl in and out to install and remove the film 6, which requires a long setup especially when the tube 2 is long, increases worker fatigue, and is not economical.

In addition, if the diameter of the tube 2 is too narrow for people to enter or exit, the film fixing support 8 is inserted from the end of the tube 2 and the film 6 is attached as shown in FIGS. 2 and 3. In some cases, the support 8 becomes heavy and bends when the support 8 is long, and this poses a problem as a simple and reliable method.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide an automatic film mounting device that is capable of transporting and mounting a film to a predetermined position.

In short, the present invention moves back and forth by an arbitrary distance on a guide rail installed inside the pipe, controls the horizontal movement of the film fixing frame using an adjustment mechanism, and detects the inner wall of the pipe using a proximity switch and stops the film mounting frame. This is what I did.

The present invention will be explained based on embodiments and with reference to the drawings.
Fig. 4 is a side view of the embodiment, Fig. 5 is a front view, and Fig. 6 is a side view of the embodiment.
The figure is a plan view.

This device includes a guide rail 9 for traveling inside a pipe 2, and a drive mechanism 1 that controls the forward and backward movement of the device.
0, a drive mechanism 11 that adjusts the mounting position of the film 6 in the vertical direction; a drive mechanism 12 that controls horizontal movement (radial movement of the tube 2) for crimping the film 6 to the inner wall of the tube 2; and an inner wall of the tube 2. It consists of a proximity switch 13 that detects the position of the device at a certain distance, a distance detector 14 that detects the position of the device on the tube 2, a mounting plate 15 that fixes the film 6, and a frame 16 that supports these drive mechanisms. .

When using this embodiment, first, a guide rail 9 is provided inside the tube 2, and the guide rail 9 is used as a guide mechanism. A certain drive unit 10
The gear 10a is rotated, the speed is reduced by the reduction gear 10b, and the power is transmitted to the gear 10d, which is integrated with the running wheels 10c, to travel.

You can also attach the film mounting plate 1 to the required position for shooting.
5 is adjusted in the vertical direction by a drive unit 11 that controls the vertical movement.
The film mounting plate 15 is then raised and lowered via the gear 11a and the rack pinion 11b. In this case, the upper pedestal 16a to which the drive unit 11 is fixed is balanced by a guide rod 17.

Furthermore, the gear 12a and the rack pinion 12b are crimped onto the inner wall of the tube 2 by the drive unit 12 that controls left and right movement.
The proximity switch 13 detects the distance between the mounting plate 15 for fixing the film 6 and the inner wall of the tube 2, and stops the drive section 12. The position of the device in the pipe 2 is such that the rotation speed of the running wheel 10c is controlled by the gears 14a, 1.
4b, 14c to the distance detector 14, and the pipe 2
Displayed on the switch stand outside.

These forward and backward movements, vertical movements, and horizontal movements are all driven by power, and in any case, by using this device, the operator can accurately place the film in a predetermined position without entering the tube 2. Can be installed.

It should be noted that the front-rear drive mechanism 10, lifting drive mechanism 11, and left-right drive mechanism 12 of this device do not necessarily need to use gears and rack pinions to transmit power, and there are many ways to transmit power using belts, chains, etc. It doesn't matter if it depends. Furthermore, by changing the lifting mechanism for the film mounting plate 15 to a rotating mechanism, it becomes possible to photograph any position of the joint 5 of the tube 2.

According to the present invention, in radiographic inspection of axial joints of small-diameter pipes, the conveyance and installation of the film are performed by power, so the operator does not have to crawl into the pipe on his or her stomach for each film to be photographed. This method eliminates the need to run the film, making it possible to reduce the labor force and fatigue of the workers. It is also economical because the number of setup steps required for film attachment work can be significantly reduced compared to the conventional method.

In addition, the method of transporting the film into the pipe and crimping the film onto the inner wall of the pipe using this device allows for stable positioning and display, making it possible to carry out radiation inspections when workers cannot enter, making it highly effective. There is something.

[Brief explanation of drawings]

Figures 1 and 2 are schematic cross-sectional views showing a conventional radiological examination method, Figure 3 is a cross-sectional view of the same, Figure 4 is a cross-sectional view of an embodiment of the present invention, and Figure 5 is a side view of the same. , FIG. 6 is a plan view of the same. 1...X-ray generating tube, 2...tube, 3...X-ray, 4
...Roller mount, 5...Joint part, 5a...Defect,
6...Film, 7...Magnet, 8...Film fixing support, 9...Guide rail, 10...Front-back drive unit, 11...Elevating drive unit, 12...Left-right drive unit, 13... Proximity switch, 14... distance detector, 15... film mounting plate, 16... mount.

Claims (1)

[Scope of utility model registration request] comprising a running wheel rotated by a first drive source,
A mount movably supported on a rail inserted into a pipe, a mechanism for raising, lowering or rotating a film fixing support plate using a second drive source mounted on the mount, and a film fixing support plate mounted on the mechanism. a mechanism movable in the radial direction of the tube; a first detector provided on the film fixing support plate to detect the distance between the plate and the inner wall surface of the tube; and a mount in the tube based on the number of rotations of the traveling wheels. An automatic film mounting device characterized in that it is provided with a second detector for detecting the position of the film.