JPH067293Y2 - Radiation thickness measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a radiation thickness gauge, and in particular, to a steel sheet immediately after being rolled by a hot rolling mill, the steel sheet on the same line in a direction perpendicular to the flow of the steel sheet. The present invention relates to a frame structure of a crown thickness measuring device capable of simultaneously measuring the thicknesses of a central portion and end portions.

[Technical background of the invention and its problems] As a frame structure of a conventional crown thickness measuring device,
There is one as shown in Japanese Utility Model Publication No. 59-74312. This frame structure has a radiation source container and a radiation detector fixed to the upper and lower open ends of a self-propelled outer C-shaped frame.
A self-propelled inner C-shaped frame is placed on top of a lower frame inside the shaped frame. In addition, N radiation detectors are arranged on the upper frame of the self-propellable C-shaped frame, and N radiation source containers are arranged on the lower frame in the width direction of the object to be measured, and a pair of radiation detectors is formed. It is shown that the radiation source containers are connected to each other so as to be movable in a direction perpendicular to the moving direction.

By the way, in the former case, when the radiation detector or the radiation source container fixed to the upper and lower open ends of the inner C-shaped frame fails, it is pulled out to the retracted position for repair. However, the inner C-shaped frame does not reach the retracted position unless the outer C-shaped frame on which the inner C-shaped frame is placed is pulled out to the retracted position. Therefore, the crown measurement is temporarily stopped, which causes inconvenience in the product thickness management. In addition, the open end of the C-shaped frame has a drawback that the C-shaped frame must be made to have a strong structure because a heavy-weight radiation detector or a radiation source container is fixed to the C-shaped frame.

In the latter case, as in the former case, if an abnormality occurs in the radiation detector or the radiation source container of the measurement system of the reference edge and measurement becomes impossible, the entire carriage is pulled out of the line and repaired or repaired. During that time, crown measurement is temporarily interrupted, which causes inconvenience in terms of product thickness control. In addition, although an advancing / retreating mechanism such as a ball screw is used in order to accurately obtain the measurement position in the width direction of the object to be measured, it has a drawback that it is difficult to handle due to its precision structure.

[Object of the Invention] Therefore, according to the present invention, a part of a plurality of measurement systems for measuring a reference thickness of an object to be measured can be easily pulled out of the line without disturbing other measurement systems, and a frame structure is provided. It is an object of the present invention to provide a radiation thickness measuring device having a simplified structure.

[Summary of the Invention] That is, the present invention provides a first rail which is arranged substantially at right angles to the moving direction of the object to be measured and which is arranged on one side of the object to be measured.
A second rail disposed on the other side, a third rail positioned outside the second rail, a radiation detector movably mounted on the first rail,
A plurality of first carriages provided with one of the radiation source containers, a plurality of second carriages movably mounted on the second rail and provided with the radiation detector and the other of the radiation source containers; A plurality of third carriages movably mounted on a rail and connected to the pair of the first carriage and the second carriage by a connecting member, and the third carriage is an inner carriage of the third carriages. A third bogie having a communication port through which a connecting member connected to a bogie located on the outer side communicates with a part of a plurality of measurement systems for measuring the reference thickness of the object to be measured, It is possible to easily pull it out of the line without disturbing other measuring systems and to simplify the frame structure.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, and FIG.

1 is a front view of the radiation thickness measuring apparatus of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. In FIG. 1, the object to be measured 11 is to be transferred from the depth of the paper to the front at the position that is the pass line. A first rail 12 is located at a position substantially perpendicular to the moving direction of the object to be measured 11 and sandwiching the object to be measured, and a predetermined distance from the pass line, and a first rail 12 is separated from the path line by a predetermined distance. The second rail 13 and the third rail 14 are arranged outside the second rail 13 at the lower position. The first rail 12, the second rail 13, and the third rail 14 are supported in parallel with the pass line by means not shown.

A truck is mounted on each of the rails 12, 13 and 14 so that the truck can travel. In each figure, the thickness of both ends and the center of the object to be measured is measured.
There are one dolly. When there are only two points in the width direction of the object to be measured, two carriages may be mounted on each rail.

The first rail 12 is located above the DUT 11, and is equipped with three first carriages 15 mounted on the rail so as to be able to travel by a plurality of wheels. Each carriage of the first carriage 15 is provided with one of a radiation detector and a radiation source container, and the figure shows a case where the radiation detector 16 is mounted on the first carriage 15.

The second rail is disposed below the object to be measured 11 and is opposed to the first rail, and the second carriage 18 is mounted on the rail by a plurality of wheels so that the second carriage 18 can travel on the rail.
Have a table. Each carriage of the second carriage 18 is equipped with the other of the radiation detector and the radiation source container, and in each drawing, the radiation source container 1
7 shows the case where 7 is mounted on the second carriage 18. The third rail 14 is located outside the second rail 13,
Three third carriages 19 mounted so that they can travel on the rails by a plurality of wheels are mounted. Here, each of the third carriages 19 has a drive mechanism for moving forward / backward in the width direction of the object to be measured, and is moved forward / backward to a predetermined position in accordance with a command from a controller (not shown).

Then, the three first carriages 1 mounted on the first rail 12
5, three second carriages 18 mounted on the second rail 13,
And three third carriages 19 mounted on the third rail 14
Are organically combined by the connecting means 21 so as to form the frames of the measurement system at the right end, the center, and the left end, thereby forming a measurement system.

Here, among the plurality of third carriages 19, the third carriage 19a inside except the third carriage 19C farthest from the end of the object to be measured,
In 19b, a space 20 is formed for passing a connecting means 21 that connects the third carriage and the second carriage outside of itself.

For example, the frame of the right end measurement system that measures the right end of the DUT 11 includes a right end first carriage 15a mounted on the first rail 12, a right end second carriage 18a mounted on the second rail 13, and The third carriage 19a on the right end, which is placed on the third rail 14, is connected by a connecting means 21a so as to have a substantially C shape. This right end measurement system frame is located at the position where the radiation detector of the first carriage and the radiation source container of the second carriage are opposed by the drive mechanism of the third carriage and the thickness of the object to be measured is maintained while maintaining the geometric position. Can be moved to.

Further, the left end measurement system frame for measuring the left end of the DUT 11 is the left end first carriage 15 mounted on the first rail 12.
C, the leftmost second carriage 18c placed on the second rail 13
And the leftmost third carriage 19 mounted on the third rail 14.
c is connected by the connecting means 21c through the space portion 20a of the third carriage 19a of the right end measurement system frame and the space portion 20b of the third carriage 19b of the central measurement system frame so as to be substantially C-shaped. Then, the radiation detector of the first carriage and the radiation source container of the second carriage can be moved to the position where the thickness of the object to be measured is desired to be measured while the geometrical position is maintained while the radiation detector of the first carriage is opposed by the drive mechanism of the third carriage. .

Further, these measuring system frames can position the second carriage in the pass line or pull out from the pass line.

Further, the central measuring system frame for measuring the center of the DUT 11 is the central first carriage 1 mounted on the first rail 12.
5b, the central second carriage 18 placed on the second rail 13
b and the center third carriage 1 mounted on the third rail 14
9b is connected by the connecting means 21b through the space 20a of the third carriage 19a of the right end measurement system frame, and is connected to approximately C
It is configured to have a shape. Then, the radiation detector of the first carriage and the radiation source container of the second carriage can be made to face each other by the drive mechanism of the third carriage and moved to a position where the thickness of the object to be measured can be measured while maintaining the geometric position. it can.

In addition, the central measurement system frame includes the first carriage and the second carriage.
It is possible to position the dolly within the pass line, or to pull it out of the pass line together with the first trolley and the second trolley of the right end measurement system frame or the left end measurement system frame.

The frame connecting means 21 of each measuring system is arranged so that the radiation detector 16 and the radiation source container 17 of each measuring system can move on the same line at right angles to the traveling direction of the object to be measured. The measurement system frame is fixed between the first carriage 15, the second carriage 18 and the third carriage 19 while being displaced so as not to hinder the movement of the measurement system frame.

Next, the operation of the apparatus thus configured will be described.

From the retracted position, connect the right end measurement system frame, the center measurement system frame, and the left end measurement system frame to the right end part, center part, and
In order to locate it at the left end, first place the right end measurement system frame at the right end of the DUT, the center measurement system frame at the center of the DUT, and the left end measurement system frame at the left end of the DUT. Let

It is assumed that the left end measurement system becomes abnormal due to some failure in this arrangement. In particular, when the left end becomes the reference thickness, it becomes a serious problem in crown measurement, so return the source container 17c and the radiation detector 16c of the left end measurement system to the retracted position from within the urgent pass line for repair. Need to At this time, the radiation source container 17c and the radiation detector 16c of the left measurement system frame can be retracted and positioned between the third carriage of the central measurement system frame and the right end measurement system frame and the pass line.

That is, the left end measurement system frame can be extracted outside the pass line even when the center measurement system frame and the right end measurement system frame are in the measuring state.

Furthermore, the central measurement system frame that measures the central part when the left end measurement system frame is located outside the line is located at the left end position.
Since the right end measuring system frame for measuring the right end can be moved to the center position, the crown amount can be continuously measured. Therefore, the operating rate of the measuring device is improved as compared with the conventional case.

After that, if the left edge measurement system frame is restored, move the right edge measurement system frame from the center to the right edge, move the central measurement system frame from the left edge to the center, and position the restored left edge measurement system frame on the left edge side. You can

As is clear from these, when the measurement system at the left end is pulled out from the pass line or inserted into the line, it is possible to eliminate the situation of interrupting the measurement of another measurement system.

Since the connecting means 21 connects the first carriage 15, the second carriage 18 and the third carriage 19 which form the respective measurement system frames while displacing each other, the connection means 21 does not hinder the movement of the respective measurement system frames. It is possible to simultaneously measure the thickness in the direction perpendicular to the traveling direction of the measured object, which is an important factor for measuring the crown, that is, both ends and the central part of the measured object.

Since the first carriage 15 is mounted on the first rail 12, no large load is applied to the connecting means 21 or the third carriage 19, so that the third carriage and the connecting means are not connected. It does not have to be a rigid structure. Further, even when the third carriage and the connecting means are fixed, since the load is shared by the rail, it is not necessary to fix the rail so strongly.
It is cheaper than the conventional C-shaped frame, and the structure can be simplified.

Further, the structure is much simpler because the structure is such that other measuring systems can be extracted or inserted only by forming a space through which the connecting means is passed through the third carriage of the plurality of frames constituting the measuring system.

In the present invention, each rail is shown to be composed of two rails, but it is needless to say that the rails can be replaced with a suspended rail. It is also possible to arrange the first and second carriages, on which the radiation detectors are mounted, and the second and third carriages in opposite vertical positions.

[Effect of the Invention] As described in detail above, according to the present invention, even if there are a plurality of measuring systems, only the defective measuring system can be taken out of the pass line without disturbing the measurement of other measuring systems. Therefore, the situation in which the crown amount cannot be measured can be further shortened compared to the conventional case, the operation rate of the device is improved, and a remarkable effect is obtained in managing the crown amount of the object to be measured.

Further, since the load of the radiation detector or the radiation source container is not directly applied to the frame but is shared by the rails, the connecting means can be made lightweight and the frame structure can be further simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a radiation thickness measuring apparatus of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. 11 ... Object to be measured, 12 ... 1st rail, 13 ... 2nd rail, 14 ... 3rd rail, 15 ... 1st carriage, 18 ... 2nd carriage, 19 ... 3rd carriage, 16 ... Radiation detector, 17 ... Source container, 20 ... Space part, 21 ... Connection means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Kawase 1 Toshiba Town Fuchu-shi, Tokyo Inside the Fuchu factory, Toshiba Corp. (56) References JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A first rail which is substantially perpendicular to the moving direction of the object to be measured and which is arranged on one side of the object to be measured, a second rail which is arranged on the other side, and an outer side of the second rail. A third rail that is positioned, and a radiation detector that is movably mounted on the first rail,
A plurality of first carriages provided with one of the radiation source containers, a plurality of second carriages movably mounted on the second rail and provided with the radiation detector and the other of the radiation source containers; A plurality of third carriages movably mounted on a rail and connected to the pair of the first carriage and the second carriage by a connecting member, and the third carriage is an inner carriage of the third carriages. A third carriage having a communication port through which a connecting member connected to a carriage located outside of the third carriage communicates with the third carriage.