JP2001179437A - Device for removing base metal adhered material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removing a base metal adhered material which safely and efficiently cut the material adhered to apparatuses in a molten steel manufacturing process. SOLUTION: The device for removing the base metal adhered material is comprised of a cutting means which is provided with a cutting nozzle 25 to be directed to the adhered metal 12 mainly consisting of the base metal and can cut and separate the material 12 adhered to an object 11, a tilting mechanism 26 to tilt the cutting nozzle 25 to the cutting position of the adhered material 12, a horizontally moving mechanism 27 to move the cutting nozzle 25 in the horizontal direction, a rotating mechanism 20 to achieve the circular cutting by the cutting nozzle 25, an elevating/lowering mechanism 17 to elevate/ lower the cutting nozzle 25, a TV camera 31 to monitor the cutting condition by the cutting nozzle 25, and a frame 14 with these components mounted thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for safely and efficiently removing deposits deposited and deposited on a manufacturing facility (that is, an object) mainly handling molten steel by immersing molten steel or scattering and holding molten steel. The present invention relates to a device for removing metal deposits.

[0002]

2. Description of the Related Art Oxygen cutting or powder cutting with oxygen and iron powder has been used in the conventional work of cutting off deposits containing ingots. However, deposits containing ingots are unspecified and unstable. Therefore, in the operation of removing the adhering matter, the operator generally relies on direct visual judgment of an operator by a nearby operation and manual operation of a cutting torch. This mainly depends on the worker's experience, judgment ability, and rod skill,
This was one of the tasks that could not be automated and efficient. Further, since the worker works near the object to be cut, the temperature environment of the workplace needs to be lowered to near room temperature, and a procedure for cooling the object to be cut (cooling work and time required for the operation) is required. Was. Furthermore, during cutting, the generation of high temperature and dust is inevitable due to the heat source supply and radiant heat, and has been a representative of the so-called "tight, dirty, dangerous" 3K work.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention is to secure safety and improve work efficiency in such a poor working environment, and to omit the conventional cooling procedure of the object to be cut. The aim is to achieve significant efficiency. In addition, since the cutting nozzle may collide with the deposits during cutting and damage the equipment including the cutting nozzle, control of the cutting depth and visibility of the cutting situation are necessary to mechanize the removal work of the deposits. Was found to need to be improved. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a device for removing metal deposits that solves the above-mentioned drawbacks of the conventional work, is safe, and has greatly improved work efficiency.

[0004]

According to the present invention, there is provided an apparatus for removing deposits on a bullion according to the present invention, comprising a cutting nozzle directed at the deposits mainly composed of bullion, wherein the deposits adhered to an object. Cutting means capable of cutting and separating, a tilting mechanism for tilting the cutting nozzle toward the cutting position of the deposit, a horizontal moving mechanism for moving the cutting nozzle in a horizontal direction, and circular cutting with the cutting nozzle. It has a rotating mechanism, an elevating mechanism for elevating and lowering the cutting nozzle, a television camera for monitoring the cutting status of the cutting nozzle, and a gantry on which these are mounted. The cutting nozzle may be provided with a preheating flame nozzle for heating the metal, or may be provided with a mechanism for supplying iron powder for performing powder cutting. In this apparatus, the cutting state can be grasped by monitoring the image taken by the television camera. The mounting angle of the cutting nozzle with respect to the vertical line is changed by the tilting mechanism, swiveled by the rotating mechanism, and moved up and down by the elevating mechanism. The horizontal movement mechanism allows the cutting nozzle to move horizontally and freely cut off the attached matter.

Here, in the apparatus for removing deposits on a metal ingot according to the present invention, a distance sensor for measuring a distance between the deposits to be cut and the tip of the cutting nozzle, and an output signal of the distance sensor are used. It is also possible to provide a cutting distance holding means for keeping the distance between the attached matter and the tip of the cutting nozzle constant. In this way, the distance between the adhering substance and the tip of the cutting nozzle is measured by a distance sensor, and a cutting distance holding mechanism that keeps the distance between the adhering substance and the tip of the cutting nozzle constant is provided. Prevents damage.

In the apparatus for removing deposits on metal ingots according to the present invention, an operator monitors an image taken by the television camera on a monitor, and detects a cutting nozzle of the cutting means, the tilting mechanism, the horizontal moving mechanism, Manual intervention to operate one or more of the rotation mechanism and the lifting mechanism (stop / start /
It is also possible to provide remote operation means capable of performing fine adjustments on the position and the cutting conditions (for example, the speed of the cutting nozzle, the fluid supply amount) of the deposit by performing ignition, position correction, and the like. This frees you from working in a poor environment. An angle sensor for detecting the driving state is attached to the tilting mechanism and the rotating mechanism, and a sensor for measuring the moving distance is provided for the elevating mechanism and the horizontal moving mechanism, and the position of the cutting nozzle with respect to the object and the cutting speed are displayed. Is preferred. Further, in the metal ingot removal device of the present invention, the object is a pot, the distance sensor,
By measuring the reference surface of the pan in advance and measuring the distance between the deposit on the pan and the cutting nozzle, it is also possible to know the thickness of the deposit on the pan. by this,
During the cutting operation, a cutting speed corresponding to the measured adhesion thickness can be automatically given. Furthermore, in the metal ingot removal device of the present invention, the object is a pot, and the distance sensor measures a reference surface of the pot in advance and measures a refractory surface, thereby It is also possible to know the remaining thickness of the refractory. Based on the measured values obtained in this measurement, repair work on the refractory can be performed numerically in a planned manner.

[0007] In addition, it is preferable that the apparatus for removing deposits of ingots be provided with the following mechanisms.
In order to realize the start of cutting in a high-temperature atmosphere, water-cooling and air-cooling mechanisms are added to the device to ensure mechanical performance (high precision and high followability). In addition, oxygen and LP are used as the supply fluid of the cutting nozzle.
Since gas or C gas is used, it is preferable to provide a local dust collector for preserving the surrounding environment, and to provide a device for performing pre-purge and post-purge before and after the cutting operation in order to avoid a fluid leakage accident. Is preferred.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a side view of an apparatus for removing metal deposits according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of an electric circuit of the apparatus for removing metal deposits, and FIG. It is sectional drawing of the casting pot to which the deposit containing is adhered.

As shown in FIGS. 1 to 3, an apparatus 10 for removing deposits on a bullion according to an embodiment of the present invention mainly includes, for example, bullion adhered inside a casting pot (pan) 11. The tower 13 is provided separately from the casting pot 11 and is provided with a swivel arm 14 which is rotatably provided on the tower 13 and is an example of a gantry. The tower 13 has an arm turning mechanism 15, and the turning arm 14 is turned to a predetermined position by a motor. It is also possible to omit the motor-driven arm turning mechanism and manually turn the turning arm 14.

An elevating shaft 16 is provided at the tip of the revolving arm 14, and is moved up and down as indicated by arrow A by an elevating mechanism 17 incorporating a motor. A turning shaft 18 is connected to a lower portion of the elevating shaft 16, and a traversing guide 19 attached to the lower portion of the turning shaft 18 is rotated by a rotation mechanism 20 at least 360 degrees as shown by arrow B, and the cutting nozzle 25 is rotated.
To cut the circle. The rotating mechanism 20 has a built-in motor, the arm turning mechanism 15 is provided with an angle sensor 21 for measuring the turning angle, and the lifting mechanism 17 is provided with a distance sensor 22 for detecting the vertical movement position of the lifting shaft 16. The rotation mechanism 20 includes a traversing guide 19.
Is provided with an angle sensor 23 for detecting the rotation angle of.

The traversing guide 19 is provided with a traversing carriage 24, on which a cutting nozzle 25 is provided with a tilting mechanism 2.
As shown in arrow C through FIG. 6, it is provided so as to be tiltable toward the cutting position of the attached matter 12. The traversing cart 24 is provided with a motor driven horizontal moving mechanism 27 and a distance sensor 28 for measuring the moving distance. The tilting mechanism 26 is driven by a motor and has an angle sensor 29 for detecting the tilting angle. Further, a distance sensor 30 for measuring a distance from the tip of the cutting nozzle 25 to the attached matter 12 of the casting pot 11 is provided at a tip of the traversing guide 19, and the inside of the casting pot 11 is observed at a lower center thereof. A television camera 31 for monitoring the cutting status by the cutting nozzle 25 is provided. Further, an ignition device for igniting the cutting nozzle 25 is provided as the auxiliary mechanism 32, and a lamp for illuminating the inside of the casting pot 11 is provided if necessary.

The output signals of the angle sensors 21, 23, 29 and the output signals of the distance sensors 22, 28, 30 are output to the control device 33, and the arm turning mechanism 15, the lifting mechanism 1
7, rotating mechanism 20, horizontal moving mechanism 27 and tilting mechanism 26
Are driven by the output from the control device 33. The control device 33 is provided with an operation panel 34 as an example of a remote operation means, and the image output of the television camera 31 can be observed by a monitor television (monitor) 35. Although the television camera 31 may be fixed, it is preferable that its direction can be changed by a remote control device. The casting pot 11 which is an example of the object shown in FIG. 3 will be described in detail. The casting pot 11 has an iron shell 37 around the inside thereof, becomes a refractory 38 inside, and has a deposit 12 inside the inside. ing. The deposit 12 is mainly composed of iron, but may contain slag or the like. As shown in FIG. 1, the casting pot 11 is disposed so that its axis is substantially aligned with an elevating shaft 16 provided at the tip of the revolving arm 14.

The control device 33 includes a computer therein, and has a substantial size a of the swing arm 14, an angle θ1 with respect to a reference position of the swing arm 14 measured by the angle sensor 21, and a swing angle from the swing arm 14 measured by the distance sensor 22. The substantial height h of the cutting nozzle 25 to the tilt base end, the eccentric distance c of the tilt base end of the cutting nozzle 25 measured by the distance sensor 28, and the tilt angle θ2 of the cutting nozzle 25 measured by the angle sensor 29. And the turning angle θ3 of the tilting base end of the cutting nozzle 25 with respect to the reference position measured by the angle sensor 23,
Thus, the tip position of the cutting nozzle 25 is calculated and input three-dimensionally.

On the other hand, the three-dimensional position of the distance sensor 30 provided at the tip of the traversing guide 19 is also input to the control device 33. Therefore, when the rotation mechanism 20 is operated,
By the distance sensor 30, the cutting nozzle 25 is substantially removed.
By measuring the distance from the tip of the mold to the deposit 12 attached to the inside of the casting pot 11 and inputting the data to the control device 33 together with the output of the angle sensor 23, the adhesion to the casting pot 11 for one rotation at a specific height is obtained. The height profile of the deposited material 12 can be measured. Therefore, when the profile of the deposit 12 is measured while the elevation sensor 17 is driven to gradually raise or lower the distance sensor 30, the amount of the deposit 12 attached to the side surface of the casting pot 11 can be determined. Here, as the distance sensor 30 has higher directivity, the profile of the attached matter 12 can be measured more accurately. Therefore, a laser distance measuring device may be used, or a reflection type distance measuring sensor may be used.

Therefore, the distance sensor 30 is turned up and down from the end, and the profile of the deposit 12 is measured, and then the position, angle, cutting direction, and cutting speed of the cutting nozzle 25 are determined. The cutting place and the like are determined by manual operation from 34, and the attached matter 12 is cut by cutting means including the cutting nozzle 25. in this case,
When performing gas cutting or powder cutting using a preheating flame as the cutting means, cutting may be difficult depending on the cutting conditions and the conditions of the deposits 12. Therefore, the cutting state is imaged by the television camera 31, and the operator is monitored by the monitor television 35. Is operated by operating the operation panel 34 while visually recognizing. If the cutting condition of the deposit 12 is poor, manual cutting, that is, manual intervention is performed based on a command from the operation panel 34 to continue cutting.

Next, the cutting nozzle 25 is manually operated.
Is moved freely in the casting pot 11, the cutting nozzle 2
5 may collide with the deposit 12. Therefore, a cutting distance holding means is programmatically formed in the control device 33, and during the cutting, the cutting nozzle 25 moves while always keeping a constant distance from the previously measured profile of the deposit 12. I have. Further, even when the cutting nozzle 25 is not being cut, the cutting nozzle 25 and other devices move while maintaining a predetermined distance (for example, 20 to 30 mm) so that the cutting nozzle 25 and other devices do not collide with the attached matter 12. It has become. This can prevent damage to the device. When the profile of the attached matter 12 is measured first, the cutting nozzle 25 is tilted inward so as not to accidentally collide with the attached matter 12. In addition, the distance sensor 30 measures the reference surface of the casting pot 11 in advance, and then deposits 12 on the casting pot 11 and the cutting nozzle 25.
By measuring the distance to the casting pot 11, the thickness of the deposit 12 on the casting pot 11 can be known. Thereby, at the time of the cutting operation, the cutting speed according to the adhesion thickness measurement value can be automatically given.
The automatic cutting of the attached matter 12 can be performed. Further, the distance sensor 30 measures the reference surface of the casting pot 11 in advance, and then measures the refractory surface, so that the refractory
You can now know the remaining thickness. Based on the measured values obtained in this measurement, the repair work of the refractory 38 can be performed in a numerical plan. A local dust collecting device 42 is provided for the operation of removing the deposits 12, and before and after the cutting operation, a pre-purge and a post-purge are performed by, for example, nitrogen, air, or the like. Further, in the case of the casting pot 11 used in the steel mill, since the refractory material 38 and the steel shell 37 are present below the deposit 12, the oxygen pressure (flow rate) or the powder cutting is performed so as not to damage them. It is preferable to control the cutting depth by controlling the powder supply amount based on data and the like that have been subjected to preliminary experiments in advance.

The present invention is not limited to the above-described embodiment, but can be applied to modifications within a scope that does not change the gist of the present invention. For example, in this embodiment, the turning nozzle 14 is used to move the cutting nozzle 25. However, when the turning arm 14 is not used, all turning, rotation, horizontal movement, ascent, etc. are performed. The present invention can be applied to a case in which a work is performed while a part of the work is visually checked or confirmed with a television camera without using a sensor for the drive mechanism.

[0018]

As is clear from the above description, the apparatus for removing deposits on metal ingots according to claims 1 to 5 can improve the safety and working environment of the cutting operator and improve the cutting efficiency. Can be improved. Further, since the attached matter can be treated at a high temperature, the procedure and time for cooling can be largely omitted, thereby contributing to an improvement in the operation rate of the equipment. In particular, in the apparatus for removing deposits of metal ingots according to claim 2, a distance sensor for measuring a distance between the deposits to be cut and the tip of the cutting nozzle, and an output signal of the distance sensor for measuring the distance between the deposits and the cutting nozzle. Since it has cutting distance holding means for keeping the distance to the tip constant, in addition to being able to always perform cutting work under constant conditions,
The cutting nozzle does not accidentally collide with the deposit. In the apparatus for removing deposits of bullion according to claim 3, the operator can:
The image taken by the TV camera is monitored on a monitor, and the cutting nozzle of the cutting means, tilting mechanism, horizontal moving mechanism, rotating mechanism,
Manual intervention (stop / start / ignition / position correction, etc.) for operating one or more of the lifting / lowering mechanisms is performed, and the cutting position and cutting conditions (for example, cutting nozzle speed, fluid supply amount) of the adhering matter can be remotely determined. The adjustable remote control means frees the user from working in the conventional poor environment. In the ingot removing device according to claim 4, the object is a pot, and the distance sensor measures a reference surface of the pot in advance,
By measuring the distance between the deposit on the pan and the cutting nozzle, the thickness of the deposit on the pan can be known.When cutting, the cutting speed can be automatically given according to the measured value of the deposit. it can. Therefore, automatic cutting of the deposit on the pot metal becomes possible. 6. The apparatus according to claim 5, wherein the object is a pot, and the distance sensor measures a reference surface of the pot in advance, and measures a refractory surface so that the remaining refractory remains. Since the thickness can be known, the repair work of the refractory can be performed numerically based on the measured value obtained by this measurement.

[Brief description of the drawings]

FIG. 1 is a side view of an apparatus for removing deposits on a bullion according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an electric circuit of the apparatus for removing deposits on a metal.

FIG. 3 is a cross-sectional view of a casting pot to which deposits including metal are adhered.

[Explanation of symbols]

10: Apparatus for removing deposits on metal, 11: Casting pot, 12:
Attachment, 13: tower, 14: revolving arm, 15: arm revolving mechanism, 16: elevating axis, 17: elevating mechanism, 18: revolving axis, 19: traverse guide, 20: rotating mechanism, 21: angle sensor, 22: Distance sensor, 23: angle sensor,
24: traversing trolley, 25: cutting nozzle, 26: tilting mechanism,
27: horizontal movement mechanism, 28: distance sensor, 29: angle sensor, 30: distance sensor, 31: television camera,
32: auxiliary mechanism, 33: control device, 34: operation panel, 3
5: Monitor TV, 37: Iron skin, 38: Refractory, 4
2: Local dust collector

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shunichi Teramura 1-7-9 Teraoka, Izumi-ku, Sendai-shi, Miyagi (72) Inventor Kanji Hiji 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Inside the company (72) Inventor Taizo Sera 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Japan Pipe Co., Ltd. (72) Inventor Takashi Inakura 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Japan Pipe Co., Ltd. F-term (reference) 4K002 AA01 BE03 CA01

Claims (5)

[Claims] 1. A cutting means which is provided with a cutting nozzle directed to a deposit mainly composed of a base metal, capable of cutting and separating the deposit attached to an object, and directing the cutting nozzle to a cutting position of the deposit. A tilting mechanism that tilts the cutting nozzle, a horizontal moving mechanism that moves the cutting nozzle in the horizontal direction, a rotation mechanism that performs a circular cut with the cutting nozzle, an elevating mechanism that moves the cutting nozzle up and down, and cutting with the cutting nozzle. An apparatus for removing deposits on a bullion, comprising: a television camera for monitoring the situation; and a mount on which the television camera is mounted. 2. The apparatus according to claim 1, further comprising: a distance sensor for measuring a distance between the object to be cut and a tip of the cutting nozzle; and an output signal of the distance sensor. And a cutting distance holding means for keeping a distance between the attached matter and the tip of the cutting nozzle constant. 3. The apparatus according to claim 1, wherein an operator monitors an image taken by the television camera on a monitor, and monitors a cutting nozzle of the cutting unit, the tilting mechanism, and the horizontal unit. A moving mechanism, the rotating mechanism,
An apparatus for removing deposits of bullion deposits, comprising a manual operation for operating one or more of the elevating mechanisms, and a remote control means capable of remotely finely adjusting a cutting position and cutting conditions of the deposits. 4. The apparatus according to claim 2, wherein the object is a pot, and the distance sensor measures a reference surface of the pot in advance, and deposits the deposit on the pot. A deposit thickness of the deposit on the pot can be known by measuring a distance between the deposit and the cutting nozzle. 5. The apparatus according to claim 2, wherein the object is a pot, and the distance sensor measures a reference surface of the pot in advance and measures a refractory surface. The apparatus for removing deposits on a bullion is characterized in that the remaining thickness of the refractory can be known.