JP2003121082A - Refractory dismantling machine of mixer car and refractory improving method of mixer car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a whole monolithic refractory improvement of a mixer car in a short time, reduce the usage of the monolithic refractory, and elongate the service life of the monolithic refractory compared with that by conventional emergency measures. SOLUTION: This refractory dismantling machine comprises a moving member movable in the longitudinal direction of the mixer car 1, a support member mounted on the moving member, a disk-shaped rotary device 14 attached to the tip of the support member, rotating around a central shaft by a rotation drive body, and axially vibrating by a vibrator, a positioning mechanism fitted with multiple fracture-type cutting edges 31 attached to the front surface of the disk-shaped rotary device to axially advance and retreat, disposed with the rotatably fitted cutting edges and the disk-shaped rotary device inside the mixer car, pushing them to the inner surface of the mixer car, and turning and moving in the circumferential direction and/or longitudinal direction, and a control device fixedly retaining the position during excavation or the pushing force of the disk-shaped rotary device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for servicing a mixed pig iron vehicle in which molten pig iron, slag or molten pig iron is stored, and mainly for accelerating the maintenance work. It is about.

[0002]

2. Description of the Related Art An amorphous refractory material provided inside a mixed pig iron vehicle in which hot-melted pig iron or slag is stored is subject to wear due to flow and chemical deterioration due to heat. Further, during the operation, since the natural cooling and the heating are repeated due to the storage of pig iron in the mixed pig iron and the switching of the discharging, the deterioration of the amorphous refractory is unavoidable. In addition, when the irregular shaped refractory material is deteriorated, a fine crack is generated in the surface layer. When a metal is inserted into the crack, the crack is propagated by repeated natural cooling and heating, and the deterioration progresses rapidly. Therefore, it is necessary to maintain the deteriorated amorphous refractory, but at that time, instead of replacing all the amorphous refractory, replace only the deteriorated part and save the work time and labor for maintenance. Cost reductions are being implemented as a result of reducing the amount of irregular refractory used.

[0003] In the maintenance work of an irregular refractory material of a towed pig car, there have been provided some dismantling techniques for removing a deteriorated portion of the irregular refractory material and maintenance techniques for maintaining local wear. In the dismantling work, a disassembling machine in which a bogie movable in the longitudinal direction of the mixed piggyback car is equipped with an excavating means is used, and the bogie is moved to remove the deteriorated portion. In the above-mentioned mobile trolley dismantling machine, a car body constructed so as to be fixed or rotatable on the bogie is equipped with an excavating means, and the excavating means is mainly provided at the tip of the boom so that the boom can be expanded or contracted or rotated on the car body. There are many things that can be combined.
For example, as described in Japanese Utility Model Publication No. 4-26435, there has been proposed a facility for mechanizing the work of disassembling a refractory material of an unshaped refractory pig iron car. This equipment is configured so that a trolley provided with an excavation tool as an excavation means for an irregular shaped refractory can travel, and aims to eliminate heavy muscle work.

In the excavation means, there are a method in which a tool such as a breaker that exerts a large impact force by hydraulic pressure in the axial direction of the tool is provided at the tip of the boom, and a method in which a rotating tool that can be rotated or raised or retracted is provided at the tip of the boom. In many cases, the excavation tool at the tip of the excavation means is configured to be able to be largely projected into the tow car. For example, tools such as Japanese Utility Model Publication No. 59-40181 have been proposed. A large number of hammers made of wear-resistant alloy are concentrically provided on the head surface of a bit body having a plane circular head, and an air ejection port is opened at a required position on the head surface. The compressed air is alternately supplied before and after the piston in the cylinder located behind the hammer to rotate the head while reciprocating the individual hammers back and forth to ensure efficient removal of only the deteriorated layer. It is possible to reduce the consumption of irregular refractories necessary for maintenance and reduce maintenance costs.

[0005]

In the maintenance of irregular refractory materials for towed pig cars, in recent years, in order to improve production elasticity and facility operation rate, there has been a problem of extending the life of irregular refractory materials. In addition, it has been required to shorten the maintenance time for irregular refractories. That is, there is a demand for minimizing downtime due to maintenance work by maximizing maintenance time, or maximizing the operating rate of a towed vehicle. However, in order to meet such demands, there is a method using a breaker, etc., which is based on the principle of striking, as a method of high efficiency of dismantling work, but the impact force is given by a tool (chisel) that has a large diameter and loses sharpness. Therefore, a deep crack is generated in a wide range of irregular refractory materials, and the entire thickness of the irregular refractory material applied to the inner circumference of the wear brick is removed in a wide range. Therefore, although the dismantling work itself does not take a long time, the refractory is completely dismantled including the healthy part, resulting in an increase in the construction amount and synergistically including the time required for curing and drying. Requires a long repair period.

On the other hand, as a method of disassembling a relatively wide area shallowly, there is a disassembling method in which vibration is applied by using a tool having a relatively small diameter such as a hammer. Only the deposits on the irregular shaped refractory can be removed, and it does not reach the sound layer of the refractory, resulting in insufficient disassembly with shallow cuts. Therefore, the new irregular-shaped construction body to be constructed on the surface layer is inferior in adhesive strength with the base material and is liable to peel off, and the deterioration layer remains so that the construction body is inferior in strength. It cannot avoid shortening, and as a result, the number of maintenance cannot be reduced. As described above, it is difficult for the conventional dismantling work method to uniformly dismantle the surface layer of a wide range of irregularly shaped refractories with high efficiency, and in both cases it is possible to reduce the maintenance time and maintenance frequency as a whole. There was no problem.

The problems of the conventional method will be individually described below. 1) In the conventional method, there is no method for dismantling the surface layer portion of a wide range of irregular-shaped refractory materials with high efficiency without requiring skill. The surface of the refractory after use is not uniform in hardness and toughness due to deterioration because a hard adhesion layer remains partially compared with the base material and the metal is partially inserted. . For example, the method of reciprocating the hammer is a method generally used for chipping concrete surface, but it is not possible to give a large acceleration because it is driven by compressed air, and the hammer material is special steel etc. Since the hardness is not sufficiently higher than that of refractory materials, the refractory materials that have deteriorated and the properties are not uniform as described above cannot be sufficiently chipped to a sound base metal and the work efficiency is low.

On the other hand, the breaker method using a tool such as a chisel is a method generally used for excavation, but it is a tool for excavating at a point where the tool contacts at one point and cuts in the axial direction of the chisel. This is a tool originally used for excavating a large amount in a short time, and is not suitable for shallowly uniformly disassembling a wide range of amorphous refractories as required this time. Therefore, in order to shallowly and uniformly dismantle an amorphous refractory in a wide range, it is necessary to adjust the pressing force with high precision in order to position at points and to perform positioning at multiple points. As a result, as can be easily understood, it is difficult to improve excavation efficiency, and operation of such demolition work requires skill.

2) In order to continue disassembling a wide range of amorphous refractory materials while maintaining a constant cut and sharpness, the conventional tool has insufficient durability. For example, a drum cutter that is generally used for continuous excavation of earth and sand uses a tool that cuts by pressing a cutting blade in a direction substantially orthogonal to the rotating tool axis, but the cutting blade itself is sharp and the cutting edge contacts the object linearly. Since it is a cutting type blade, the cutting depth per blade is originally small. Therefore, if the hardness is high, such as an irregular shaped refractory, the cutting depth must be small, and because the wear progresses, the sharpness of the cutting cannot be maintained through a wide range of disassembly, and the frequency of rotating tool replacement is low. There are many drawbacks.
Also, in the case of a front tool that crushes by applying a pressing force on the extension line of the tool axis used for drilling applications,
The number of blades that constantly contact the excavated surface is required to be at least three, and the pressing force and cutting depth per blade are small. Therefore, if the hardness is high, such as an irregular shaped refractory, the incision must be made small, and because the blade is fixed, the sharpness deteriorates due to wear, and it is necessary to continue excavation over a wide area with high efficiency. I can't.

As a method of different cutting principle, there is a method of vibrating a hammer. However, although the tool is a metal, the tip is flat, so the bite is shallow and the chipping to the base material is insufficient. Moreover, even if the tip portion has a sharp shape, the hardness is not sufficient and the sharp shape cannot be maintained due to wear, so that it is difficult to maintain the sharpness. The present invention has been made in view of the above problems, in an apparatus and a method for disassembling a deteriorated surface layer of an irregular shaped refractory having a non-uniform hardness or shape in a narrow mixed pig iron to a healthy layer with high efficiency. Therefore, we propose a device that can reach the deepest part of the towed car and can work remotely from outside the furnace with high efficiency without the need for skill due to the compact device. Moreover, the tool to be used has such durability that disassembly of a wide range of irregular-shaped refractory materials can be continued while maintaining constant cutting and sharpness. By spraying the dismantled surface after disassembling with this method device, the amount of amorphous refractory used can be reduced and the overall maintenance work can be done in a short time, compared to conventional emergency measures. (EN) An epoch-making maintenance device and method capable of extending the life of an object.

[0011]

The invention according to claim 1 is
It has a pedestal that can be swiveled on a horizontal plane for mounting loads,
In a refractory dismantling machine that is installed on the pedestal of a movable device that can travel and is used to maintain an indefinite refractory material of a towed car, a main boom installed on the gantry so that it can be moved forward and backward or elevated, and a tip of the main boom. The telescopic arm attached to the horizontal part so as to be pivotable in the horizontal direction, the swivel mechanism attached to the tip of the telescopic arm, and the front part of the swivel mechanism, which can tilt in a direction perpendicular to the telescopic direction of the telescopic arm. A guide mechanism and a drifter having a rotation axis parallel to the guide direction of the guide mechanism, and vibrating in the rotation axis direction, and a plurality of crushable cutting blades are attached to the front surface of the disk-shaped body attached to the tip of the drifter. A disk-shaped rotary tool that is fitted so as to be able to move forward and backward in the axial direction, and a disk-shaped rotary tool that is pressed against the inner surface of the hot metal car and that follows the circumferential direction and / or the longitudinal direction of the hot metal car. Wherein the positioning means for the rotating or movable, and a control device for holding the pressing force during the drilling of a disc-shaped rotating tool constant, in that it consists of.

According to a second aspect of the present invention, the disc-shaped rotary tool has a crushing type cutting blade arranged in a plurality of concentric circles or spirals.

According to a third aspect of the present invention, the crushing type cutting blade is a conical bit attached to a disc-shaped rotary tool so as to be individually rotatable, and each conical bit is provided on the disc-shaped rotary tool. Characterized by being arranged concentrically or spirally so that they are fitted in a state where there is play in the axial direction of the cutting blade in the hole and contact along the irregularities of the surface of the irregular shaped refractory inside the mixed piggy wheel .

The invention of the method according to claim 4 is a method for disassembling and maintaining an amorphous refractory material of a mixed pig car, wherein a disk-shaped rotary tool is provided at a predetermined depth on the surface of the irregular refractory material of the mixed pig car. Positioning so as to cut, by holding the disk-shaped rotary tool at a fixed position and pressing it for a fixed time, by repeating the operation of moving it in the longitudinal direction or the circumferential direction of the towed car,
It is characterized in that the deteriorated layer on the surface of the amorphous refractory material is removed and disassembled over the entire surface.

The invention of a method according to claim 5 is a method for disassembling and maintaining an amorphous refractory material of a mixed pig car, wherein a disk-shaped rotary tool is provided on a surface of the irregular refractory material inside the mixed pig car to a predetermined depth. Positioning so as to make a cut with the disk-shaped rotary tool and moving it in the longitudinal direction or the circumferential direction of the torch car at a constant speed while keeping the pressing force of the disk-shaped rotary tool constant, so that the deteriorated layer on the surface of the irregular-shaped refractory is entirely covered. It is characterized by removing and dismantling.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to one embodiment and the accompanying drawings. The embodiments described below are examples to which the present invention is applied, and various technical limitations are applied, but the scope of the present invention is not limited to these embodiments. Basically, it is an apparatus and method applicable to a tow truck using an amorphous refractory. The towed car 1 requiring maintenance is brought to the maintenance site. At the garage, the towing car can be rotated in any position by the tilting mechanism (not shown) provided. A pit (not shown) for dropping the waste material is provided below the towing car 1, and after the dismantling work is completed, the waste material is inverted by 180 degrees and the internal waste material is discharged to the pit. A steel bucket (not shown) or the like is provided in advance in the pit, and when the waste material is accumulated, it is discharged by a crane or the like.

First, the structure of the dismantling machine will be described with reference to FIG. The dismantling machine can be driven by the crawler 2 for traveling, and the receiving port 1
The vehicle is stopped at the side of the towed piggy car 1 with d lying down to prepare for the work of inserting the main boom 7 from the front of the piggy-hole 1d. The means for traveling is not necessarily limited to this method, and when the maintenance place is fixed at one place, a rail may be provided and a rail traveling type may be used. The dismantling machine can be turned by the traveling crawler 2. Also, the gantry 4 can be swung by the swivel shaft 3, and these means are used to adjust the posture for inserting the boom and the arm provided with the tool at the front end with respect to the front surface of the piggy-hole 1d. .

A disk-shaped rotary tool 14 will be described with reference to FIGS. 2 and 3.
The mechanism for inserting into the torpedo car 1 will be described. Forward and backward movement of the main boom 7 is performed by a parallel link mechanism including a main boom forward and backward movement mechanism 15 and a main boom support mechanism 16. The drive of the parallel link mechanism is performed by the cylinder 18 for forward and backward movement of the main boom. Further, the main boom 7 can be lifted / lowered by independently operating the main boom lift / lower cylinder 19. That is, the main boom 7
Is basically arranged in the horizontal direction, but an oval-shaped link guide hole 17 is provided above the main boom support mechanism 16, and the main boom forward / backward movement mechanism 15 is expanded / contracted by the extension / contraction of the main boom / elevator cylinder 19. Since it is possible to lift up to the center of the link above, the angle can be adjusted for the slope and height difference of the installation surface of the main body.

Next, with reference to FIGS. 4 and 5, the operation of causing the arm on the tip end side of the main boom inserted into the towing car 1 to follow the axial direction of the towing car 1 will be described. That is, as shown in FIG. 4, since the towing car 1 is long in the axial direction,
The main boom 7 is swung from the piggy hole 1d by the forward movement of the crawler 2 or the forward movement of the main boom 7 so that the arm for moving and guiding the disk-shaped rotary tool 14 in the axle direction of the towing car 1 can be positioned. The mechanism 6 is inserted so as to reach the shaft center of the torch car 1. And the telescopic arm 8
90 degrees to the left or right by the swivel shaft 9 in the insertion direction.
By swinging the swing head, it is possible to make it follow the axial direction of the hot metal car 1. As shown in FIG. 5, the moving mechanism for feeding the disk-shaped rotary tool 14 in the axial direction of the towing car 1 is performed by the extendable arms 8, 8a, 8b. Although it depends on the axial length of the tow truck, a two- to three-stage expansion / contraction mechanism is usually required.

A disk-shaped rotary tool 14 will be described with reference to FIGS. 6 and 7.
A mechanism for following the inner circumference of the towing car 1 will be described. As shown in FIG. 6, the disc-shaped rotary tool 14 includes the drifter support mechanism 2 together with the drifter 13 which is a rotary impact driving source.
It is attached on the slider guide 12 via 6, 27. The disk-shaped rotary tool 14 is mounted on the slider guide 12 so as to be able to move forward and backward by the expansion and contraction operation of the feed cylinder 28. Therefore, the disk-shaped rotary tool 1
The pressing force of No. 4 can be kept constant by the feed cylinder 28 or the position can be made constant. Further, the slider guide 12 can be tilted by the expansion and contraction operation of the tilting cylinder 11, and can take an arbitrary position following the inner circumference of the towing car 1 as shown in a typical series of positions in FIG. . Furthermore, by keeping the telescopic arm 8 in a posture substantially following the axle of the towed piggy car 1, the disc-shaped rotary tool 14 is provided with an inner circumference by the turning mechanism 10 provided with the turning gear 29 that turns by the power of the turning motor 23. It becomes possible to imitate

Next, the drifter 13 will be described. The drifter 13 is a drive source that rotates and vibrates by hydraulic pressure, and is a device generally used as a drive source of a tool of a rock drilling machine. The size of the drifter is determined by the weight constraint of the drifter that can be supported by the boom rigidity. In this method, the number of hits is more important than the hitting power in order to gain chipping efficiency. In general, when the number of hits increases with a fixed amount of oil, the hitting power tends to decrease. Therefore, in the embodiment, the hitting number is about 2000 to 3000 bpm, and the hitting force is 200 to 400 N ·, which is slightly more modest than a general breaker.
About m is preferable. The rotation is performed by the rotation motor 24. The higher the rotation speed, the more stable the excavation tends to be, but
If the boom is too high or the rigidity of the boom is insufficient, the tool cannot contact stably, and the wear rate becomes fast, so that the rotation speed has an upper limit. In the above embodiment, 3
The optimum range is 0 to 60 rpm. Since the surface of the refractory material is uneven, including the metal, the rotational torque must be as large as possible. 15 in the embodiment
A torque of 00 Nm was required.

Next, the disc-shaped rotary tool 14 will be described.
The disk-shaped rotary tool 14 is disk-shaped as shown in FIG. 8 or FIG. 9, and a large number of conical so-called conical crushing cutting blades 31 are arranged in a spiral or concentric circle on the front surface thereof. The entire disc-shaped rotary tool is driven by the connected drifter 13. Disk-shaped rotary tool 1
The shape of the front surface of 4 may be flat, but a gentle spherical shape is desirable because the object is cylindrical and has a curvature, and the wear state is uneven and uneven. In addition, a step may be provided in the periphery for the same effect. The larger the tool diameter, the higher the efficiency, but it is preferably about 250 mm or less from the constraints of the rotation and the hitting performance of the driving body. On the other hand, as shown in FIG. 4, considering the tool's copying performance to the corner portion that moves from the end plate portion 1a to the conical portion 1b and the unevenness generated on the refractory surface, the smaller the tool diameter, the smaller the blind spot range can be suppressed. I can. Therefore, the range of tool diameter is 150
mm to 250 mm is preferred.

Next, the cutting blade (also referred to as a conical bit because of its pick or conical shape) 31 will be described with reference to FIGS. The cutting blade 31 is similar to a tool used for crushing and excavating hard rock in general tunnel excavation,
As a material of the tip 34 at the tip, it is general to select cemented carbide so as to withstand a high hardness amorphous refractory. Cutting blade 31
Is attached to the surface of the disk-shaped rotary tool 14 so as to be parallel to the vibration direction applied to the rotary tool 14 substantially in the rotational axis direction, as shown in FIG. Has been done. The number and the diameter of the cutting blades 31 are determined according to the following concept. That is, the larger the number of cutting blades, the more stable the rotation is, and the smaller the wear rate per cutting blade is. However, since the tool diameter is limited in size as described above, a tool having a diameter of 15 to 25 mm, which is smaller than that for general excavation, is used to secure the number of cutting blades. In principle, stable drilling is possible if the number of cutting blades is at least 3 and the vibration load per cutting blade divided by the number of cutting blades that acts on average satisfies the load conditions required for biting. You can increase the number within the range. Although it is about 30 in the example shown in FIG. 9, about 10 to 30 are generally preferable. FIG. 10 shows a cross section of the disk-shaped rotary tool 14, both of which are connected by inserting the rod insertion hole 32 into the rod 25 which is splined. The disk-shaped rotary tool 14 is inserted into the pick insertion hole 33 provided on the front surface of the holder 30.

An enlarged view of the pick 31 is shown in FIG. 11. A notched washer 37 made of spring steel is fitted to the pick base 36 so as to cause backlash, and this washer 37 is used for pick insertion hole. 33 is tightly fitted. The washer 37 prevents the washer at the bottom of the pick 31 from slipping off by a stopper 38, which prevents looseness.
The cutting blade 31 is attached in such a structure that it can move back and forth in the axial direction. Accordingly, the entire disc-shaped rotary tool 14 comes into contact with the surface of the refractory material, and further, the cutting blades 31 bite into the indefinite refractory material to be processed and crush it by the acceleration generated by the vibration. The play allowance for forward and backward movement, that is, the stroke of vibration is preferably set so that the backlash 39 is about 2 to 3 mm, and the synergistic effect with the vibration frequency provides the acceleration required for bite.

Since the cutting blade 31 has a play between the inner diameter of the washer 37 and the pick base portion 36, the cutting blade 31 is mounted so as to be rotatable around the axis of the cutting blade 31. It is designed so that it can be self-polished by being rotated in a fixed direction due to the frictional force with the irregular refractory that is the work piece when excavating. Since the cutting blade 31 has a cemented carbide tip 34 embedded in its tip, it does not need to be replaced while the cutting edge 31 is uniformly reduced, and may be replaced when the blade tip becomes short and the cemented carbide tip 34 is about to disappear. Usually, the length of the core can be as long as 10 to 20 mm. The replacement work for each cutting blade is easy, and since each worn blade can be replaced, the cost can be reduced. The specific work is the pick neck 3 of the cutting blade to be replaced.
5 can be tooled and removed using the lever principle. On the other hand, a new cutting blade can be easily inserted by simply pressing the washer 37 having a notch made of spring steel into the pick insertion hole 33 and tapping it with a hammer.

Next, the breaker replacement mechanism will be described. When a large amount of metal is attached, the metal can be removed by replacing the disk-shaped rotary tool with a shank rod 25 provided with a chisel. In addition, 5 in the figure
Is a cabin, 6 is a valve unit, 20 is a control panel, 21
Is a hydraulic motor unit, and 22 is a cooling fan.

Next, the work of disassembling the amorphous refractory will be described. In the torpedo car 1, first, as a preliminary rough chipping operation, a thick metal is removed by a breaker (not shown) of a dismantling machine, the tilting table is inverted, and the waste material is dumped in the pit. In this case, the dismantling machine may be a so-called general-purpose dismantling machine. Next, the surface layer of the amorphous refractory lining of the piggy wheel 1 is hung with the disc-shaped rotary tool 14 of the dismantling machine. The dismantling is performed by pressing the front surface of the disk-shaped rotary tool 14 against an irregular-shaped refractory and applying vibration while rotating the disk-shaped rotary tool 14. The cutting of the cutting edge is performed by the acceleration generated by vibration rather than the static pressing force of the tool. That is, with a boom or arm extended to a deep portion such as the torpedo car 1, the pressing force exerts more on the bending of the arm than on the cutting of the cutting edge, so the cutting edge cannot cut into the refractory. However, the pressing force generated by the acceleration due to the vibration allows the cutting edge to bite into the refractory. The dismantling work is
By holding the feed cylinder 28 at a constant pressure while the disk-shaped rotary tool 14 is rotating while being hit by using the drifter 13 and the rotary motor 24,
Alternatively, it is carried out by holding in the neutral position. The radial positioning of the disk-shaped rotary tool 14 is performed by the tilting cylinder 11 or the turning mechanism 10, as shown in FIG.

Since the torpedo wheel 1 is provided with a taper, the basic procedure is to repeat the operation of first copying the tool in the circumferential direction and then moving the tool in the axial direction. Therefore, after the chiseling in the circumferential direction is completed, the feed cylinder 28 is retracted and the telescopic arm 8 is telescopically extended, so that it is possible to disassemble the deteriorated layer of the amorphous refractory in a wide range in the axial direction.

End plate portions 1a, which are both end portions in the longitudinal direction of the mixed piggy wheel 1, position the tool by the combination of the tilting cylinder 11 and the turning mechanism 10 and dismantle it. A breaker is mainly used in the conventional method, but it is a tool for excavating a point that makes a point contact and cuts in the axial direction. In exchange, the present method arranges the conical bit 15 in the form of several spirals in front of the disk-shaped rotary tool 14, and instantaneously shifts the pitch so that several conical bits come into axial symmetry and spiral or concentric circles. Are arranged in a shape. Therefore, not only the slag but also the cutting blade firmly penetrates into the deteriorated layer of the irregular-shaped refractory, so that a cut of 10 to 20 mm can be uniformly and easily achieved in one pass, and apparently by the rotation of the disc-shaped rotary tool 14. It is a tool suitable for excavating as a surface by sending a bit row cut in the ridge of the disk-shaped rotary tool 14 in the inner peripheral direction or the axial direction. The chipping efficiency varies depending on the material of the irregular refractory and the condition of the adhered substance, but it is 10 mm to 20 m.
In the case of m cuts, 20m per hour as a guide
Chiseling of about ² is possible. On the other hand, since the indeterminate refractory erosion surface is not uniform in the axial direction and the inner peripheral direction, it is necessary to perform chipping with a uniform thickness by following the uneven surface. Even in this case, the present invention instantaneously contacts three or more conical bits and continuously crushes them. Therefore, even if the shape of the workpiece is changed by adjusting the rotational speed and the pressing force of the tool, it is arbitrary. It is possible to dismantle a wide range of amorphous refractories with high efficiency by cutting. Specifically, instead of putting the cylinder in the neutral position, the pressure is always kept constant, so that the incision can be kept substantially constant following the surface of the irregular-shaped refractory. For example, when the inner circumference is fed while the constant pressure is constantly applied to the feed cylinder 28, when the irregular refractory material is uniform, the irregular refractory surface is not uniform. Since a certain number of cuts can be made, it is possible to easily realize dismantling that imitates an irregularly shaped refractory surface.

A difference in pressing force appears between the upward and downward directions by the weight of the drifter 13 and the disk-shaped rotary tool 14, so that the pressing setting of the feed cylinder 28 can be automatically switched in several steps depending on the orientation of the tool. Is also good. Also, if the pressing force and feed rate are used so as to be kept almost constant, the depth of cut is determined by the strength of the irregular refractory material. It is possible to At the end of the dismantling work, the waste material is dumped into the pit by tilting. Most of the scraps dismantled become powder, so most of the scraps can be discharged by means such as suction.

The dismantling machine is operated by the cabin 5 or a pendant (not shown). Positioning of the dismantling machine, insertion of the main boom, and copying of the arm in the axial direction are preferably performed from the cabin. On the other hand, the chiseling operation may be performed by direct visual inspection or by a pendant based on a camera image. There is no chemically deteriorated layer or fine cracks on the surface of the amorphous refractory after the chipping work, and a chemically or mechanically continuous construction body can be formed by spraying this surface. Therefore, it is possible to repeatedly perform such dismantling work and spraying work.

[0032]

Since the present invention has the above-mentioned structure, it has the following effects. According to the present invention, by adopting the above configuration, it is possible to shorten the time for the entire maintenance work, reduce the amount of amorphous refractory used, and extend the life of the irregular refractory as compared with the conventional emergency measures. is there.

In the invention according to claim 1, 3, 4 or 5,
In the dismantling work to maintain the irregular shaped refractory of the tow car,
A moving means movable in the longitudinal direction of the towing car, a supporting means mounted on the moving means, and a plurality of tools mounted on the tip of the supporting means and attached to the tip of the tool and rotating in the axial direction of the disk while rotating around the axis. A disk-shaped rotary tool in which a crushing-type cutting blade is fitted so as to be able to move forward and backward in the axial direction, and a disk-shaped rotary tool is placed inside the mixed pig metal and pressed against the inner surface of the mixed pig metal and circumferentially and / or longitudinally. Using a positioning means that can be swiveled or moved respectively according to the direction, the pressing force during excavation of the disk-shaped rotary tool is kept constant to dismantle the deteriorated layer of the surface layer of a wide range of amorphous refractories with high efficiency. can do.

According to the invention described in claim 2, the disk-shaped rotary tool is a disk-shaped rotary tool having a crushing-type cutting blade in which a plurality of spiral-shaped disk-shaped rotary tools are arranged, and the crushing-type cutting blades are individually A conical bit attached to a disc-shaped rotary tool so as to be freely rotatable, and the conical bit is spirally formed so as to come into contact with the irregular refractory inside the mixed piggy car one by one on the side surface of the disc-shaped rotary tool. Since the conical bits are arranged or spirally arranged by shifting the pitch of the conical bit, it is possible to easily dismantle a wide range of irregular-shaped refractories with constant cuts while maintaining sharpness.

Summarizing the above, firstly, the disk-shaped rotary tool is hardened by sufficient pressing based on acceleration due to vibration in a direction substantially orthogonal to the tool axis while using a tool having a high hardness of crushing principle. Amorphous refractory with metal attached can be crushed into a sheet. Moreover, because the conditions of force and speed of tool traverse, tilt and longitudinal movement can be combined appropriately, any cutting allowance and the shape after dismantling can be adjusted to a fixed range for a wide range of irregularly shaped refractories. The chisel can be realized with high efficiency. In particular, since the piggyback car is a container with a small pig iron port and a deep inside, it is generally difficult to keep the boom long and to maintain the rigidity necessary for pressing.However, according to this method, the hardened refractory surface layer The force required to cut in can be effectively applied with a compact machine.

Secondly, the chipping in which the cutting margin and the shape after disassembly are adjusted to a constant value can be realized with high efficiency by the pressing force of the disk-shaped rotary tool and the position retention of the disk-shaped rotary tool.
The amount of irregular refractory consumed per maintenance work can be reduced.

Thirdly, since a plurality of crushing-type cutting blades arranged in a spiral shape are used in the disk-shaped rotary tool, the noise of the disk-shaped rotary tool is small, and the crushing-type cutting blades are individually rotatable. Since it is a conical bit attached to a disk-shaped rotary tool, the tool wear is small and the conical bit is replaced less often.

Fourthly, the surface of the amorphous refractory after dismantling is a wide range of fresh amorphous refractory which is free from mechanical deterioration such as chemical deterioration and fine cracks, and the conical bit striations caused by excavation. Since the adhesive strength is improved over the entire area, the continuity of the construction body can be maintained, there is little concern about peeling, the life can be expected to be extended, and disassembling / spraying can be repeated several times. .

Fifth, as compared with the conventional dismantling method, the deteriorated surface layer can be stripped off to a minimum thickness, and then a required amount of spraying can be performed, which shortens the maintenance time per disassembly and repair as a whole. Can be achieved, and moreover,
As described above, the service life of the construction body is longer than that of the conventional spraying and the number of times is reduced, so that the total maintenance time can be shortened.

Sixth, the dismantling work is easier to operate in principle than the point contact tool and is suitable for mechanization, and the amount of preliminary setup work such as a formwork can be greatly reduced by blowing work compared with pouring. The influence of the skill level of the operator as a whole work is reduced, and the operation is easy without requiring skill.

Seventh, since the dismantled scraps produced by dismantling contain much powder, most of them can be discharged by means such as suction.

[Brief description of drawings]

FIG. 1 is an overall side view of a dismantling machine according to the present invention.

FIG. 2 is an overall side surface layout explanatory diagram of the dismantling machine according to the present invention when the main boom is retracted.

FIG. 3 is an explanatory view of the overall side surface layout of the dismantling machine according to the present invention when the main boom is advanced.

FIG. 4 is an overall plan layout explanatory diagram showing a usage state of the dismantling machine according to the present invention.

5 is an explanatory view of the overall plane layout of the dismantling machine of FIG. 4 when the arm is extended.

FIG. 6 is a side view of an arm tip portion according to the present invention.

FIG. 7 is a description of use during disassembly by the disassembly machine according to the present invention.

FIG. 8 is a side view of a tool used in the present invention.

FIG. 9 is a front view of a tool used in the present invention.

FIG. 10 is a side view of a tool used in the present invention.

FIG. 11 is a side view of a cutting edge of a tool used in the present invention.

[Explanation of symbols]

1 tow car 1a End plate 1b Conical part 1c Straight body 1d Receptacle 2 Moving device (crawler) 3 swivel axes 4 mounts 5 cabins 6 valve units 7 main boom 8 telescopic arm 9 swivel axis 10 swivel mechanism 11 Tilt cylinder 12 Slider guide 13 Rotary impact drive (drifter) 14 Disc-shaped rotary tool 15 Main boom forward / backward movement mechanism 16 Main boom support mechanism 17 Link guide hole 18 Main boom forward and backward cylinder 19 Main boom elevation cylinder 20 control panel 21 Hydraulic motor unit 22 Cooling fan 23 Swing motor 24 rotation motor 25 shank rod 26 Drifter support mechanism 27 Drifter support mechanism 28 Feed cylinder 29 Slewing gear 30 holder 31 Cutting blade (pick) 32 Rod insertion hole 33 Pick insertion hole 34 Carbide Carbide Tip 35 pick neck 36 pick base 37 washer 38 Remove the washer 39 backlash

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Sumio Sakaki             1-1 Tobata-cho, Tobata-ku, Kitakyushu, Fukuoka             Inside the Yawata Works of Hontan Works (72) Inventor Masafumi Suematsu             1-1 Tobata-cho, Tobata-ku, Kitakyushu, Fukuoka             Inside the Yawata Works of Hontan Works (72) Hiromi Kawakami, inventor             Yamamoto Rockma 36 Tojo-cho, Hiba-gun, Hiroshima Prefecture             Within Shin Co., Ltd. (72) Inventor, Kaichi Yatani             Yamamoto Rockma 36 Tojo-cho, Hiba-gun, Hiroshima Prefecture             Within Shin Co., Ltd. (72) Inventor Manya Motoya             Yamamoto Rockma 36 Tojo-cho, Hiba-gun, Hiroshima Prefecture             Within Shin Co., Ltd. F-term (reference) 4K014 AD04 AD12                 4K051 AA00 AA06 LH03

Claims (5)

[Claims] 1. A refractory dismantling machine for servicing an irregular refractory of a towed car, which has a pedestal capable of swiveling on a horizontal plane on which a load is installed and which is installed on the pedestal of a movable device. , A main boom installed on the pedestal so that it can be moved forward and backward or elevated, a telescopic arm attached to the tip of the main boom so that it can pivot horizontally, and a pivoting mechanism attached to the tip of the telescopic arm. A guide mechanism attached to the front part of the mechanism and capable of tilting in a direction perpendicular to the extension / contraction direction of the telescopic arm; a drifter having a rotation axis parallel to the guide direction of the guide mechanism and vibrating in the rotation axis direction; Attached to the tip of the disk-shaped body,
A disk-shaped rotary tool in which a plurality of crushing type cutting blades are fitted so as to be able to move forward and backward in the axial direction, and the disk-shaped rotary tool is pressed against the inner surface of the hot metal piggyre, and is imitated in the circumferential direction and / or the longitudinal direction of the hot metal piggyer. A refractory dismantling machine for a tow truck, comprising: a positioning device that can be swung or moved respectively, and a control device that maintains a constant pressing force during excavation of a disk-shaped rotary tool. 2. The refractory dismantling machine for a mixed pig car according to claim 1, wherein the disk-shaped rotary tool has crushing type cutting blades arranged in a plurality of concentric circles or spirals. 3. A conical bit, wherein each of the crushing cutting blades is individually attached to a disk-shaped rotary tool so as to be freely rotatable, each conical bit being cut in a hole provided in the disk-shaped rotary tool. The concentric circle or spiral shape is arranged so that the blade is fitted in a state where there is play in the axial direction, and the blade comes into contact with the irregular shaped refractory surface inside the torpedo wheel so as to come into contact with the irregular refractory surface. Refractory dismantling machine for torch car. 4. A method for disassembling and repairing an irregular refractory material of a mixed pig car, which comprises positioning a disc-shaped rotary tool on the surface of the irregular refractory material of the mixed pig car so as to cut at a predetermined depth. Characterized by removing the deteriorated layer on the entire surface of the irregular shaped refractory and dismantling it by moving the rotating tool in the longitudinal direction or the circumferential direction of the towed pig wheel while repeating the operation of pressing the rotating tool for a certain period of time. Refractory maintenance method for towed cars. 5. A method for disassembling and maintaining an amorphous refractory material for a mixed pig car, comprising positioning a disk-shaped rotary tool so as to cut at a predetermined depth on the surface of the irregular refractory material inside the mixed pig car,
Characterized by removing the deteriorated layer on the entire surface of the amorphous refractory material and dismantling it by moving the longitudinal force or the circumferential direction of the mixed pig iron wheel at a constant speed while keeping the pressing force of the disk-shaped rotary tool constant. Refractory maintenance method for towed cars.