JPH0451016Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a holder for a molded hot water level gauge.

(Prior art) In the process of injecting molten metal into a mold and producing slabs by continuous casting, the level of the molten metal inside the mold is controlled to improve the surface and internal properties of the slabs and to stabilize operations. is very important.

For this purpose, for example, as disclosed in Japanese Patent Publication No. 63-16218, the hot water level is measured using an eddy current level meter (magnetic sensor), and based on the difference between the actual hot water level and the target hot water level. By adjusting the nozzle opening degree, it is possible to control the hot water level to within ±5 mm of the target value, regardless of the drawing speed.

4 and 5 illustrate the installation situation of the magnetic sensor, in which a mold cover 2 made of a steel plate is laid on the top surface of a continuous casting mold 1, and a holder 4 with a magnetic sensor 3 fixed to the tip is placed. It is placed and fixed on the upper surface of the mold 1, and the magnetic sensor 3 is made to look out at a predetermined distance L from the hot water surface 5A in the mold. The mold cover 2 is provided with a notch 6 for installing the holder 4 therein. In the figure, 5 is molten steel, 7 is a tundish, and 8 is an immersion nozzle fixed to the tundish.

(Problem to be solved by the invention) By measuring the mold hot water level using the above-mentioned conventional technique and adjusting the stopper opening of the tundish dish based on the measurement result, the hot water level can be kept within a predetermined range. In the continuous casting method, which automatically controls the process, when casting different steel grades successively, a partition iron plate is inserted at the joint of the steel grades to prevent mixing of ingredients. After removal and insertion of the iron plate, the sensor must be placed at a predetermined position on the mold again. This work is carried out in a narrow space between the mold and the tundish, and is not only dangerous because the worker has to crawl into that narrow space, but also because it must be done quickly and accurately. The physical and mental burden on people was great.

Furthermore, when producing bloom slabs by simultaneously pouring metal into multiple molds from one tundish, it is necessary to insert steel plates at joints of different steel grades for the number of molds. Manual work peaks in processing work, etc.
For this reason, the timing for removing the magnetic sensor for mold level control may be brought forward, or the timing for installing the magnetic sensor after restarting the casting of the next molten steel may be delayed. There was a problem with the decline.

(Means for Solving the Problems) The present invention has been made to advantageously solve the problems of the prior art. A holder for a molded hot water level gauge, characterized in that it is installed so that it can rotate upward, and a level meter holding mechanism is rotatably installed at the tip of each of the bifurcated arms; (2) a permanent magnet in the abdomen; is fixedly installed, and a bifurcated arm is provided in front that rotates by a link mechanism, and a hydraulic drive device is provided to operate the link mechanism,
A holder for a molded hot water level gauge, characterized in that a level meter holding mechanism is rotatably installed at the tip of each of the bifurcated arms, (3) an adjustment device is provided between the bifurcated arms to adjust the spacing between the arms. Item 1 or 2 above, characterized in that
(4) The mold according to item 1, 2 or 3, characterized in that a screw for adjusting the tilting angle of the level meter holding mechanism is provided at each end of the bifurcated arm. This is a holder for a hot water level meter.

(Function) Since the present invention has a permanent magnet fixed to the abdomen of the main body, it is possible to instantly fix the main body by simply placing it on the iron plate laid on the top surface of the mold.
By simply rotating the bifurcated arm, it is possible to install and evacuate the magnetic sensor accurately and safely in a short time.

(Example) FIG. 1 is a perspective view showing an embodiment of the present invention.

As shown in FIG.
A and 13B are installed so that they can rotate upward, and magnetic sensors 3A and 3B are attached to the tips of the bifurcated arms 13A and 13B via pins 21A and 21B, respectively.
The holding mechanisms 14A and 14B for holding the parts are rotatably installed.

It is effective to provide an adjusting device 15 between the bifurcated arms 13A and 13B to adjust the interval between them, and the bifurcated arms 13A and 13B are provided with an adjusting device 15 for adjusting the tilting angle of the holding mechanisms 14A and 14B. It is also effective to provide screws 16A and 16B. In the figure, 13C is a handle integrated with the bifurcated arm, and 17 is a cable for supplying power and cooling fluid to the magnetic sensors 3A and 3B.

FIG. 2 is a perspective view showing another embodiment of the present invention.

As shown in FIG. 2, a permanent magnet 10 is fixed to the abdomen of the main body 9, and in front of the permanent magnet 10 is a bifurcated arm 13A that rotates upward via a link mechanism 11.
13B, and a hydraulic drive device 18 for driving the link mechanism is provided at the rear, and the bifurcated arm 1
Pins 21A and 2 are attached to the tips of 3A and 13B, respectively.
Holding mechanism 14A, 14B rotatably via 1B
It has been established. 19 in the figure is hydraulic drive device 1
8 is a driving lever, 20 is a spring, and 21 is a guide roller provided on the main body.

In the link mechanism 11 according to the present invention, a frame 32 is rotatably fixed to the main body 9 via a shaft 31,
The frame 32 and the tip of the cylinder rod 18A are connected by a pin 33, the front part of the frame 32 is connected to the rear part 13 of a bifurcated arm by a pin 34, and the lower part of the rear part 13 of the bifurcated arm is connected by a pin 35.
The arm 36 is connected to one end of the arm 36 by a pin 37, and the other end of the arm 36 is connected to the main body 9 by a pin 37. In the figure, 38 is a pin that connects the rear end of the hydraulic drive device 18 to the main body 9.

Since the link mechanism according to the present invention is constructed as described above, when the cylinder rod 18A is pushed forward by moving the lever 19 up and down, the frame 32 is rotated upward via the shaft 31. At this time, one end of the arm 36 is connected to the main body 9 by the pin 37.
Since it is connected to the bifurcated arms 13A and 13B
rotates via the pin 34, and the magnetic sensors 3A,
3B retreats upward in a trajectory as shown by arrow 25 in FIG.

When the magnetic sensors 3A, 3B are mounted on the molds 1A, 1B using the device of the present invention, the device of the present invention is placed at a predetermined position on the mold cover 2 made of iron plate laid on the mold. At that moment, the main body 9 is fixed onto the mold cover 2 by the action of the permanent magnet 10 fixed to the abdomen. Next, in the one shown in FIG. 1, by operating the handle 13C, the second
In the one shown in the figure, the arms 13A, 13B are rotated downward by operating the lever 19, so that the magnetic sensors 3A, 3B are exposed to the hot water surface from above the molds 1A, 1B. Fix as shown in Figure 3. In order to allow the magnetic sensors 3A, 3B to be seen at predetermined positions, it is effective to provide the mold cover 2 with a cutout 6 as shown in FIG. 5.

The distance between the magnetic sensors 3A and 3B is adjusted using an adjusting device 15, for example, a turnbuckle, and the angle between the magnetic sensors 3A and 3B is adjusted using a screw 1.
Adjust using 6A and 16B.

Although the hot water level meter according to the present invention has been explained as a magnetic sensor, the level meter itself does not have to be limited to a magnetic sensor.If it is of the type that measures the hot water level from above the hot water surface without contact, it can use sound waves. It doesn't matter what type you use, whether it's an optical type, etc.

(Effects of the invention) Since the present invention is configured as described above, when installing and removing the mold level gauge at a predetermined position above the mold, it can be done accurately and smoothly in a short time. And it can be done safely. Therefore, even when casting different types of steel in succession, the time rate for automatically controlling the metal level, which was previously about 70%, can be increased to about 95% with this invention, making it possible to improve production casting. It has a remarkable effect on quality control of pieces, labor saving and safety of work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the invention, Fig. 2 is a perspective view showing another embodiment of the invention, Fig. 3 is a perspective view explaining the operating situation of the invention, and Fig. 4 is a conventional FIG. 5 is a side view showing the technology partially in section, and FIG. 5 is a perspective view showing the prior art. 1...Mold, 2...Mold cover, 3
A, 3B...Magnetic sensor, 9...Main body, 10...
...Permanent magnet, 11...Link mechanism, 13A, 13
... Arm, 14A, 14B ... Holding mechanism, 15
...Adjusting device, 16A, 16B...Screw, 18...
…Hydraulic drive.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A permanent magnet is fixed on the abdomen, and a bifurcated arm is installed in the front so as to be able to rotate upward, and a holding mechanism for a level meter is provided at the tip of each of the bifurcated arms. A holder for a molded hot water level gauge that is rotatably installed. (2) A permanent magnet is fixed on the abdomen, a bifurcated arm is provided in the front that rotates by a link mechanism, and a hydraulic drive device is provided to operate the link mechanism,
A holder for a molded hot water level gauge, characterized in that a level gauge holding mechanism is rotatably installed at the tip of each of the bifurcated arms. (3) Claim 1 or 2, characterized in that an adjustment device is provided between the bifurcated arms to adjust the distance between the arms.
Holder for the molded hot water level meter listed. (4) The holder for a molded hot water level gauge according to claim 1, 2 or 3, characterized in that a screw for adjusting the tilting angle of the level gauge holding mechanism is provided at the front end of each of the bifurcated arms.