JPS6354471B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a tundish repair device for performing operations such as punching out metal from a tundish in continuous casting equipment.

(Prior Art) After casting, it is necessary to repair the internal parts of the tandate of continuous casting equipment, and the following repair equipment has conventionally been used for this repair.

(A) Metal removal work A device in which the tandate is turned over 180 degrees and pushed out from the nozzle hole by a punching cylinder installed on a gantry truck. (B) Peeling of coating materials, breaking of refractories, and bricks. A device in which the tundish is placed horizontally and peeled and crushed using an air breaker installed on a gantry trolley.The above work must be carried out while the tundish is hot and must be operated remotely. In this case, it takes a lot of effort to align the punching rod and the punch at the specified locations, and the punching force during punching acts on the tundish, and the reaction force acts on the repair device, so it is difficult to use them. It is necessary to have a configuration that receives the force of , which has the disadvantage that the device becomes larger accordingly.

(Object of the Invention) This invention was made in order to eliminate such conventional drawbacks, and provides a tundish repair that can be performed hot and quickly with a small device. It provides equipment.

(Structure of the Invention) The first gist of the present invention is to provide a rotary boom that rotates around its own axis by a rotating means, an attachment attached to the tip of the rotary boom, and a rotary boom that connects the attachment to the rotary boom. The attachment has a main body connected to the rotating boom, a support member held by the main body and moved back and forth by a slide means, and a support member attached to the main body and pushed out. The punching rod has a punching means for holding the rod so as to be movable back and forth, and a gripping claw attached to the tip of the support member and engaging a locking member on the bottom of the tundish to draw the tundish. is configured to be inserted into a nozzle hole of a tundish, and is arranged so that the punching rod faces the nozzle hole while the gripping claw is locked with a locking member.

A second gist of the present invention is that, in the above structure, a breaker consisting of a chisel and a vibration generating means is provided on the opposite side of the support member to the side on which the gripping claws are attached, and the breaker can perform operations such as peeling off the coating material. It has been made possible to do so.

With the above configuration, the gripping claw can be easily locked to the tundish by the pushing means provided on the attachment, and the pushing force is canceled out between the tundish and the attachment by interaction with the sliding means. In this way, no punching force is applied to other supporting means. In addition, it has a compact structure with an attachment attached to the tip of the rotating boom, and in the second aspect of the invention, the attachment is equipped with a vibration generating means, so that it can be used not only for punching metal but also for punching metal.
It is also possible to perform a peeling operation on the coating material.

(Example) In FIG. 1, 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, and a rotary boom 4 is attached to the tip of this boom 3. The 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.
A tilting cylinder (tilting means) 50 for tilting the attachment 5 is attached between the two.

As shown in FIGS. 2 and 3, 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. 4, 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 locking member 62 attached to the tip of the support member 8 and the bottom of the tundish to pull the tundish 6. have.

The support member 8 is configured to be movable back and forth with respect 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 grip claw 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. This gripping pawl 53 is attached to four locking members 6 shown in FIG.
A pair are formed in the direction of the paper surface of FIG. 5 corresponding to No. 2.

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 positional relationship with the gripping pawl 53 is set such that the punching rod 72 faces the nozzle hole 64 of the tundish with the gripping pawl 53 being locked with the pin 63 of the locking member.

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. 4, the tundish 6 is supported via a trunnion 66 by appropriate supporting means so that its bottom is vertical. And attachment 5
is moved to a position facing the bottom of the tundish 6, the support member 8 is advanced by the sliding means 80, and the gripping claw 53 is moved to a position facing the bottom of the tundish 62.
From this state, the attachment 5 is lowered and the support member 8 is retreated by the slide means 80, so that the gripping claw 5
3 is locked to the pin 63. In this state, the punching rod 7
The tip of No. 2 faces the nozzle hole 64 as described above. Note that since the gripping claws 53 rotate around the pin 82 when the gripping claws 53 are locked to the pins 63, it is possible to evenly lock the pair of gripping claws 53 and each locking member 62. can.

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

In addition, during the above punching operation, the tundish 6
A force P in the left direction in FIG.
A rightward force P acts on the support member 8 through the support member 8 .
On the other hand, the leftward force P applied to the tundish 6 passes from the pin 63 to the gripping pawl 53 to the support member 8.
A leftward force P acts on the tundish 6, and as a reaction force, a rightward force acts on the tundish 6 through the pin 63 by the gripping claw 53. In this way, since the rightward force P and the leftward force P act on the attachment support member 8 and the tundish 6, these forces cancel each other out and the tundish 6
No force is applied to the support portion of the main body 51 and the support portion of the main body 51 (rotary boom 4) 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 the above embodiment, the rotating frame 2 mounted on the traveling truck 1 serves as a means for holding the rotating boom 4.
Although an example is shown in which the rotary boom 4 and the boom 3 are used, the holding means for the rotating boom 4 is not necessarily limited to this.
Other appropriate means can be adopted.

(Effects of the Invention) As described above, the present invention allows the gripping claw to be easily locked to the tundish by the punching means provided on the attachment at the tip of the rotating boom, and the punching force is transferred between the tundish and the attachment. The push-out force is not applied to other supporting means by canceling each other out. In addition, it is possible to create a compact structure with an attachment attached to the tip of the rotating boom, and by equipping this attachment with a breaker, it can be used not only for punching bare metal but also for peeling off coating materials. This can be done with one compact device. Therefore, there is an advantage in that operations such as punching out the base metal of the tundish and peeling off the coating material can be carried out extremely easily, and also that the supporting equipment for the tundish and this device can be downsized.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire device showing an embodiment of the present invention, Fig. 2 is a bottom view of a tundish in which this device is used, Fig. 3 is a sectional view thereof, and Fig. 4 is a schematic enlarged sectional view of the attachment. , FIG. 5 is a schematic enlarged sectional view of the grasping claw in a state in which it is locked to the tundish, and FIG. 6 is a side view of the device in the coating material peeling operation state. 4...Rotating boom, 5...Attachment, 6
. . . Tandate, 7 . . . Push-out means, 8 . . . Support member, 9 .
...Gripping claw, 72...Pushing rod, 80...Sliding means, 90...Chis.

Claims (1)

[Scope of Claims] 1. A rotating boom that rotates around its own axis by rotating means, an attachment attached to the tip of this rotating boom, and a tilting means that tilts this 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. A tundish repair device characterized in that the punching rod is arranged to face a nozzle hole while the gripping claw is locked to a locking member. 2. A rotating boom that rotates around its own axis by a rotating means, an attachment attached to the tip of the rotating boom, and a tilting means that tilts this attachment with respect to the rotating boom, and the attachment a main body connected to the rotating boom; a support member held by the main body and moved back and forth by a sliding means; a punching means attached to the main body and holding the punching rod so as to be movable back and forth; The support member has a gripping claw that is attached to the tip of the support member and engages with a locking member on the bottom of the tundish to draw the tundish, and the punching rod is configured to be inserted into a nozzle hole of the tundish. At the same time, the punching rod is arranged so as to face the nozzle hole with the gripping claw being locked to the locking member, and a chisel and vibration generating means are provided on the side of the support member opposite to the side where the gripping claw is attached. A tundish repair device characterized in that a breaker consisting of the following is attached.