JPS6356018B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for maintaining a tundish of continuous casting equipment, which performs metal punching work and spraying of spray material.

(Prior Art) After casting, the tandate of continuous casting equipment requires internal repair, and conventional maintenance methods for performing this repair have been carried out using the following equipment. In other words, the metal punching cylinder and the refractory crushing breaker are each hung separately from a gate-shaped frame on the frame of a large gantry truck that runs on rails, and the operator's cab is integrated with the breaker mechanism above the side of the breaker. A metal punching cylinder separate from this is movably attached to the portal frame, and is moved by the travel of the portal frame, the movement along the portal frame in the direction perpendicular to it, and the movement in the vertical direction. The cylinder and breaker for punching metal are operated. The force and reaction force applied to the cylinder during metal punching are received by the tundish support mechanism and the gate-shaped frame.

It is also necessary to spray the spraying material onto the tundish from which the sprayed material has been removed.This involves installing an automatic spraying machine on the rail and automatically spraying the tundish from which the sprayed material has been removed. The material is transported to the bottom of the machine and sprayed.
If two machines are run on one line in this way, the length of the line will become longer and the tundish will need to be moved in the pit.
The area occupied by the equipment becomes larger, and the work becomes more time-consuming. It is also possible to install two rail lines and run the tundish repair equipment and the automatic spraying machine separately on the rails, but in this case too, the equipment would require a large area, and the space between the lines would be too large. It will also be necessary to move the tundish.

(Purpose of the Invention) The present invention was made in order to eliminate such conventional drawbacks, and provides a method for maintaining a tundish that is a small device, occupies a small area of equipment, and can perform work quickly. This is what we provide.

(Structure of the Invention) In this invention, two tundishes are arranged along the rails in a pit formed between the rails, and an automatic tundish spraying machine running on the rails is used to remove the sprayed material in the pits. The sprayed material is sprayed onto the tundish that has been sprayed, and during this time a self-propelled tundish repair device is used from the side of the rail to punch out the metal of the other tundish in the pit and peel off the sprayed material. The applicator is moved over the tundish where the spraying material has been removed, and the tundish is carried out of the pit after spraying, and a new tundish is carried in, and a self-propelled machine is installed on the side of the tundish that has been carried in. The automatic tundish repair device is moved, and the above-mentioned tundish automatic spraying machine and self-propelled tundish repair device perform spraying of spraying material, metal punching, and stripping of the sprayed material, respectively. .

The above-mentioned self-propelled tandice repair device includes a floor-based self-propelled traveling trolley equipped with a revolving frame equipped with a driver's cab, a boom attached to the revolving frame, a tilting means for tilting the boom, and a tilting means for tilting the boom. A rotating boom attached to the tip and rotated about its own axis by rotation means, an attachment attached to the tip of the rotating boom, and a tilting means for tilting the attachment with respect to the rotating boom. The attachment has a main body connected to the rotary boom, a support member that is moved back and forth by a slide means held by the main body, and a support member that is attached to the main body and holds the punching rod so as to be movable back and forth. and a gripping claw that is attached to the tip of the supporting member and that engages with a locking member on the bottom of the tundish to draw the tundish, and the punching rod is inserted into the nozzle hole of the tundish. The punching rod is arranged to face the nozzle hole with the gripping claw being locked to the locking member, and the support member has a gripper on the side opposite to the gripping claw attachment side. It is sufficient to use a breaker equipped with a breaker consisting of a vibration generator and a vibration generating means.

In the above configuration, since the automatic spraying machine and the self-propelled tundish repair device move and replace the two tundishes in the pit, there is no need to move the tundishes, and the area occupied by the equipment is correspondingly increased. should be small. Furthermore, the gripping claw is easily locked to the tundish by the pushing means provided on the attachment of the self-propelled tundish repair device, and the pushing force is canceled out between the tundish and the attachment by interaction with the sliding means. If the push-out force is not applied to the other support means by adjusting the support means, the tundish support equipment etc. can be constructed compactly.
Furthermore, if the above-mentioned attachment is equipped with a breaker so that a single device can perform not only the work of punching out bare metal but also the work of peeling off the coating material, the equipment can be made more compact and the work can be done more quickly. It can be carried out.

(Example) In FIG. 1, a pair of pits 2a and 2b are formed between rails 100 along the rail 100, and an automatic spraying machine 3 runs along the rail 100.
00 is arranged, and a self-propelled tundish repair device 400 that runs along the rail 100 and on the side thereof is also arranged. Tundishes 6a and 6b are arranged in the pits 2a and 2b, respectively.

In the above equipment, as shown in FIG. 1A, a tundish automatic spraying machine 300 is used to
The spraying material is sprayed onto the tundish 6a from which the sprayed material in a and 2b has been removed, and during this time, the ground of the other tundish 6b in the pit is removed from the side of the rail 100 by the self-propelled tundish repair device 400 Performs gold punching and stripping of sprayed material.

Then, as shown in FIG. 1B, the automatic tundish spraying machine 300 is moved onto the tundish 6b where the spraying material stripping work has been completed. During this movement, the self-propelled tundish repair device 400
If the tundish sprayer 300 is rotated sideways, the tundish sprayer 300 can be moved to retreat from the rail 100. After the spraying is completed, the tandy dish 6a is carried out of the pit, and
A new tundish 6c as shown in Figure 1C
is carried in, and the self-propelled tundish repair device 400 is moved to the side of the tundish 6c that has been carried in. The automatic tundish dish spraying machine 300 and the self-propelled tundish dish repair device 4
00, the respective operations of spraying the spraying material, punching out the base metal, and peeling off the spraying material are performed.

In the same manner, the automatic spraying machine 300 that has completed the spraying work is moved onto the tundish where the spraying material has been peeled off, and the self-propelled tundish repair device 4 is placed on the side of the newly brought in tundish.
00 is moved to perform the work of punching out the base metal and peeling off the sprayed material.

Figure 2 shows the above-mentioned self-propelled tundish repair device 4.
00, a driver's cab 10 is attached to a revolving frame 2 mounted on a traveling truck 1, and a boom 3 is attached thereto.A rotary boom 4 is attached to the tip of this boom 3.
is configured to be tiltable by a tilting cylinder (tilting means) 40. Further, the rotary boom 4 is configured to be rotatable around its own axis by a drive means (not shown). An attachment 5 is attached to the tip of the rotating boom 4 so as to be rotatable around a shaft 55, and a tilting cylinder (tilting means) 50 for tilting the attachment 5 is attached between the two.

As shown in FIGS. 3 and 4, the tundish 6 has an inner surface made of a refractory material 67, and trunnions 66 projecting outward on both sides.
is installed. The trunnion 66 has a rectangular cross section so that the supporting state of the tundish 6 can be easily switched between a horizontal state and a vertical state. Further, a nozzle hole 64 and a locking member (reaction force receiving metal fittings) 62 are attached to the bottom part 60, and the reaction force receiving metal fittings 62 are provided at four locations in the illustrated example, and are arranged facing each other at predetermined intervals. It has a pair of plate-shaped members 62a and a pin 63 attached between them.

As shown in FIG. 5, the attachment 5 includes a main body 51 rotatably connected to the rotating boom 4 around a shaft 55, and a support member held by the main body 51 and moved back and forth by a slide means 80. 8, and a punching rod 7 attached to the main body 51.
2, and a gripping claw 53 that engages with a reaction force receiving metal fitting 62 attached to the tip of the support member 8 and attached to the bottom of the tundish to draw the tundish 6. It has

The support member 8 is configured to be movable back and forth relative to the main body 51 by a guide member 83 and a guide roller 58 that rolls along the guide member 83, and the piston rod 8 of a slide means 80 consisting of a cylinder.
4 is attached to the main body 51 so as to be movable back and forth by being coupled to the support member 8 via a pin 85. The gripping pawl 53 is attached to the tip of the support member 8 by a vertical pin 82 so as to be rotatable around the pin 82. A pair of gripping claws 53 are formed in the direction of the plane of the paper in FIG. 5, corresponding to the four reaction force receiving metal fittings 62 shown in FIG.

Further, a punching rod 72 is attached to the tip of the piston rod of the punching means 7, and this punching rod 72 has a shape and size to be inserted into the nozzle hole 64 of the tundish, that is, a shape and size to be inserted into the circular nozzle hole 64. It is composed of a rod-shaped body. Also, this punching rod 7
2, the gripping claw 53 is connected to the pin 63 of the reaction force receiving hardware.
The gripping claw 53 is held so that the punching rod 72 faces the nozzle hole 64 of the tundish when the punching rod 72 is engaged with the
The positional relationship with is set.

Further, on the opposite side of the supporting member 8 to the side on which the gripping claws are attached, a breaker 9 consisting of a chisel 90 and a vibration generating means for imparting vibration to the chisel 90 is attached.

Next, the operation of this device will be explained. First, as shown in FIG. 5, the tundish 6 is supported via a trunnion 66 by appropriate supporting means so that its bottom is vertical. Then, the traveling truck 1 is moved to a position opposite to the tundish 6, the tilting cylinders 40 and 50 are operated, and the rotary boom 4 is rotated to move the attachment 5 to a position facing the bottom of the tundish 6. Next, the support member 8 is advanced by the slide means 80, the grip claw 53 is brought close to the reaction force receiving metal fitting 62 as shown in the figure, and from this state, the attachment 5 is lowered and the support member 8 is retreated by the slide means 80, As shown in FIG. 6, the gripping claw 53 is engaged with the pin 63. In this state, the tip of the punching rod 72 faces the nozzle hole 64 as described above. Note that the gripping claw 53 is attached to the pin 6.
3, the gripping claws 53 rotate around the pin 82, so that the pair of gripping claws 53 and the pins 63 of each reaction force receiving metal can be evenly locked.

Next, the punching rod 72 is press-fitted into the nozzle hole 64 by the punching means 7, and the sliding means 80
The support member 8 is pulled by. By press-fitting the punching rod 72 into the nozzle hole 64, the base metal 65 in the tundish 6 is separated from the refractory 67 and extruded from the tundish 6. After extruding the metal 65, the punching rod 72 is moved backward by the punching means 7, and the support member 8 is advanced by the sliding means 80 to release the gripping claw 53 from the pin 63, resulting in the state shown in FIG. Retract attachment 5 from.

In addition, during the above punching operation, the tundish 6
A force P in the left direction in FIG. 6 is applied by the punching rod 72 to the punching means 7 as a reaction force.
A rightward force P acts on the main body 51 through the main body 51. On the other hand, the force P in the left direction applied to the tandate 6
As a result, a leftward force P is applied from the pin 63 to the main body 51 through the gripping claw 53, the support member 8, and the slide means 80.
acts, and as a reaction force, a rightward force is applied to the tundish 6 by the gripping claw 53 through the pin 63. In this way, since the rightward force P and the leftward force P act on the attachment main body 51 and the tundish 6, respectively, these forces cancel each other out, and the supporting portion of the tundish 6 and the supporting portion of the main body 51 (rotating boom 4) No force is applied during punching.

In addition, in order to remove the coating material on the inner surface of the tundish 6, as shown in FIG. Rotate to point Chiss90 forward. and tilting cylinder 40
Through the operations in step 50, the chisel 90 is applied between the refractory material 67 and the coating material 69, compressed air is supplied from a drive source (not shown), the chisel 90 is vibrated by the vibration generating means, and the coating material 69 is peeled off. Further, the work of breaking down the refractories and bricks of the tundish 6 may be carried out in the same manner.

In this way, since the work is carried out by the trolley 1 traveling on the floor without using large equipment such as a gate-shaped frame, the equipment is small and there are no restrictions on other equipment. Furthermore, since the reaction force is absorbed by the attachment itself, there is no need for a large reaction force support mechanism.

(Effects of the Invention) As explained above, the present invention provides spraying work in pits between rails using an automatic tundish spraying machine that runs on rails and a self-propelled tundish repair device that runs on the side of the rails. The equipment itself moves along one line of rails and replaces the parts, so there is no need to move the tundish in the pit, and the equipment is It occupies a small area, and the work can be done extremely easily and quickly.

In addition, this self-propelled tundish repair device is equipped with a working means, and the pushing-out force is canceled out between the tundish and the attachment so that the pushing-out force is not applied to other supporting means. Support equipment for the tundish can be configured compactly.

[Brief explanation of drawings]

Figures 1A, B, and C are schematic plan views of equipment to which the present invention is applied, Figure 2 is an overall side view of the self-propelled tundish repair device, and Figure 3 is a bottom view of the tundish in which this device is used. , Fig. 4 is a sectional view thereof, Fig. 5 is a schematic enlarged sectional view of the attachment, Fig. 6 is a schematic enlarged sectional view of the gripping claw in a state in which it is locked to the tundish, and Fig. 7 is a schematic enlarged sectional view of the attachment. It is a side view showing a working state. 1... Traveling trolley, 2... Swivel frame, 2a,
2b... pit, 4... rotary boom, 5... attachment, 6, 6a, 6b, 6c... tundish, 7... punching means, 8... support member, 9...
... Breaker, 50 ... Tilting cylinder (tilting means),
51... Attachment body, 53... Gripping claw,
72...Pushing rod, 80...Sliding means, 90...
...Chis, 100...Rail, 300...Automatic spraying machine, 400...Self-propelled tundish repair device.

Claims (1)

[Claims] 1. Two tundishes are arranged along the rails in a pit formed between the rails, and the sprayed material in the pits is peeled off by an automatic tundish spraying machine that runs on the rails. The spraying material is sprayed onto the tundish, and during this time a self-propelled tundish repair device is used from the side of the rail to punch out the metal of the other tundish in the pit and peel off the sprayed material, and then the automatic spraying machine The tundish is moved onto the tundish where the spraying material removal work has been completed, and the tundish after spraying is carried out of the pit.A new tundish is carried in, and a self-propelled tundish is placed on the side of the tundish that has been carried in. Maintenance of a tundish dumpster characterized by moving the repair device and carrying out spraying of spraying material, metal punching, and peeling of the sprayed material using the above-mentioned automatic tundish dumpster spraying machine and self-propelled tundish dumpling repair device, respectively. Method. 2. The above-mentioned self-propelled tandice repair device comprises a floor-based self-propelled traveling trolley equipped with a driver's cab and equipped with a revolving frame, a boom attached to the revolving frame, a tilting means for tilting this boom, and this boom. a rotating boom that is attached to the tip of the boom and rotates about its own axis by rotation means; an attachment that is attached to the tip of the rotating boom; and a tilting means that tilts the attachment with respect to the rotating boom. The attachment has a main body connected to the rotating boom, a support member held by the main body and movable back and forth by a sliding means, and a support member attached to the main body to hold the punching rod so as to be movable back and forth. and a grasping claw that is attached to the tip of the support member and that engages with a locking member on the bottom of the tundish to draw the tundish, and the punching rod is inserted into the nozzle hole of the tundish. The punching rod is arranged to face the nozzle hole with the gripping claw being locked to the locking member, and the punching rod is arranged to face the nozzle hole on the side opposite to the gripping claw attachment side of the support member. 2. The method of servicing a tundish as set forth in claim 1, wherein a breaker comprising a dust and a vibration generating means is attached.