JPH0318493Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention provides a device for repairing chips on the taphole surface, which has become uneven due to the adhesion of molten iron and slag due to repeated tapping and tapping. , relates to a device to be attached to a machine dedicated to taphole processing, such as a taphole closing machine and a hole opening machine.

[Conventional technology]

Even if you try to press the head into the taphole after tapping, which has an uneven surface, by tightly fitting the tip of the blocker, the head will leak from the gap between the taphole surface and the taphole blocker, resulting in a smooth tip. Unable to perform mouth closure work. For this reason,
When the unevenness becomes severe, it is necessary to smooth out the uneven surface.

As a device for this fishing,
No. 36085 discloses using a cutter to scrape off the uneven surface. However, since the surface of the taphole is highly hard, the cutter wears out considerably when scraping the refractory, requiring frequent replacement to maintain the sharpness of the cutter, and the tip of the cutter wears out. In this case, it was difficult to obtain a smooth tap hole surface, and the cutting operation itself was time-consuming.

In order to eliminate this drawback, and also to eliminate the difficulty of installing a separate device in places such as the taphole where the tapwater and related equipment are located in front, we A plurality of high-hardness hammer rods connected to a piston hammer are installed at the tip of the drill or hole-drilling machine, which destroys the hot metal and molten slag that adhere to the taphole surface and restores a normal taphole surface. A repair device capable of obtaining the same in a short time and suppressing the wear and tear of parts was disclosed in Japanese Utility Model Application No. 59-163710.

[Problem that the invention attempts to solve]

As shown in FIG. 6, a dedicated machine for such taphole processing, such as a closing machine, rotates from a standby position and moves from a work preparation position A-1, indicated by a dashed line, to just before the taphole B, indicated by a solid line. It does not move in a straight line until it reaches the operating position A-2, but changes from the initial linear movement to a curved movement just before the tap hole B, and the tip C of the obturator moves parallel to the working surface D. In addition, taphole B
Draw a movement trajectory E that rotates just before reaching .

Therefore, when a hanging repair device is attached to the tip of the blocker, the moving movement of the blocker rotates before the original operating position, and the axial direction a of the blocker and the opening direction b of the taphole coincide. Otherwise, the working surface of the chisel repair device cannot face the surface of the taphole, and it may be difficult to completely remove deposits from the taphole.

In such a conventional system, the rotation angle of the obturator must be considered in advance during installation, resulting in extremely low work efficiency.

In addition, the repair device itself needs to be cantilevered onto the tip of a dedicated machine, which makes it difficult to support it, and the work of the repair device directly affects the closure machine, resulting in intermittent bending and twisting. There was also a risk of damage to the special equipment used for installation, such as the closure equipment, due to the force applied.

The problem to be solved by the present invention is to solve the problems caused by attaching the conventional repair device to a dedicated machine, to make the installation easy, to mechanically finely adjust the repair position and direction, and to An object of the present invention is to provide a mounting device that allows chisel work to be carried out smoothly and without difficulty.

[Means for solving problems]

The present invention has a connecting part that connects to a dedicated taphole processing machine such as a blocking machine or a hole-opening machine, and a machine frame connected to the connecting part, and a repair device and a machine frame connected to the machine frame for blocking the front and rear of the repair device. In addition to providing a driving means for the machine, a guide is provided on the machine frame that matches the movement trajectory of the tip when the special machine is operated, so that the working part of the repair device always faces the blast furnace tap hole repair surface. The above-mentioned technical problem has been achieved by creating a structure that can move forward and backward.

For the above-mentioned guidance, side plates are provided on the machine frame, and these side plates are used as groove-shaped guides.Furthermore, the repair device is stored in the underframe, and a guide wheel with a shock absorber is attached to this guide groove. It can be assumed that

Hereinafter, an explanation will be given with reference to FIGS. 1 to 6, which show examples in which the attachment device of the present invention is applied to a closure machine.

Referring to FIG. 1 showing a side view of the mounting device of the present invention partially in cross section, and FIG. 2 showing FIG. It consists of an attachment part 4a to the tip C of the machine A, and a machine frame 4 having a repair device 2 and a drive mechanism 3 for the repair device 2.

When the dedicated taphole processing machine A is a blockage machine, the mounting portion 4a is composed of a fixed frame 6 having an annular connection hole 5, as shown in FIG.
It is convenient to have a structure in which the fixing frame 6 is fixed to the distal end of the obturator by operating a handle 8 that raises and lowers the presser fitting 7 that protrudes from above. Sliding parts 9 are formed on both sides of the fixed frame 6, and the lower ends thereof are fixed to the machine frame 4. Further, a crossbar 10 connecting the top ends of both sliding parts 9 is connected to a rod 12 of a lifting air cylinder 11 with a brake fixed to both outsides of the fixed frame 6, and is driven by the air cylinder 11. By moving the machine frame 4 up and down, the setting position of the repair device 2 can be adjusted.

13 is the crosspiece 1 by the drive of the air cylinder 11.
A stopper with an adjustment screw is shown for stopping the movement of the fixed frame 6 when it approaches the upper surface of the fixed frame 6.

As the repair device 2 in the present invention, the device using the air hammer disclosed in the aforementioned Utility Model Application No. 59-163710 shown in FIG. 3 can be suitably used. The repair device 2 consists of an air hammer device provided with a plurality of high-hardness hammer heads 15 that are reciprocated by an air cylinder 14 on a support arm at the tip end of a rotating shaft of a rotating mechanism 16.

It is preferable to fix a center pin 26 to the tip of the rotating shaft of the rotation mechanism 16 of the air hammer device, the tip of which projects when the hammer head 15 is retracted. The coaxial repair device 2 is supported by an underframe 17 from left and right so that the working part at the tip faces the taphole surface of the blast furnace, and the underframe 17 is fixed to a mounting frame 18 of the machine frame 4. It is pivotally supported at the tip of the rod 20 of the air cylinder 19 for forward and backward movement. As shown in FIGS. 3 and 4, the guide wheel 21 provided on the outside of the underframe 17 is connected to two upper and lower guide grooves provided on both side plates 22 for supporting the underframe of the machine frame 4. 23, and the air cylinder 1
9 enables the underframe 17 to move back and forth.

Note that when the center pin 26 is provided in the repair device 2, the center pin 26 is pressed against the repair work surface by the air cylinder 19 to prevent its position from shifting.

The guide groove 23 is located at the tip C of the obturator in FIG.
The underframe 1 is provided in a shape that matches the movement trajectory E of the underframe 1.
By adjusting the position of the guide wheel 21 provided at 7 and the mounting position of the air cylinder 19, no matter where the underframe 17 is in the guide groove 23, the repair can be fixed to the underframe 17. The position of the hammer head 15 at the tip of the device 2 can always be made so that the closing machine working position A-2 and the taphole B surface are accurately opposed to each other.

Further, the guide wheel 21 provided on the underframe 17 is attached to a bracket 25 supported by a shock absorbing spring 24, as shown in FIG. 3 and FIG. 4 showing details of the attachment of the guide wheel 21. This structure prevents vibrations from being transmitted to the taphole blocker body during chiseling work.

The operation of the apparatus having the above structure will be explained with reference to FIGS. 1, 2, and 5.

First, the device of the present invention is mounted by a crane or the like on a frame equipped with horizontal and vertical position adjustment devices (not shown), and the annular connection hole 5 is fitted into the tip C of the taphole blocker A in the retracted position. After operating and fixing with the presser fitting 7, the obturator A is rotated and stopped in front of the work surface D as shown in FIG.

Next, connect the supply piping (not shown) from the compressed air source to the mounting device 1 and the repair device 2, remove the brake of the lifting air cylinder 11, and then connect the rod 12.
The machine frame 4 is lowered along the sliding frame 9 by retracting the horizontal bar 10 and stopping at a position where the hammer head 15 faces the bottom of the tap hole surface, and compressed air is supplied to the mounting device 1. When the rod 12 is stopped, the brake is automatically applied and the rod 12 is fixed, as shown in Fig. 5a.
Position the machine frame 4 in the state shown in .

After setting the machine frame 4 to the opposite position below the tap hole surface,
After operating the rotation mechanism 16 of the repair device 2 and the hammerhead drive cylinder 14, the rod 20 of the forward and backward movement air cylinder 19 is advanced to move the underframe 17.
advance.

As a result, the hammer head 15 also advances as shown in FIG.
1, the deposit G can be removed from the entire circumference of the tap hole B.

Furthermore, since the underframe 17 can be advanced along the two upper and lower guide grooves 23, as shown in FIG. The taphole face F-2 at the final position of -2 can be lifted cleanly without creating a gap between the front end face of the blocker A and the taphole face.

The movement of the hammer head 15 during this period is shown in FIG. 5d.

First, as shown in figure a, when the machine frame 4 has descended to the front of the taphole to be repaired, the hammer head 15 is in the standby position shown in figure b, and as shown in figure b, 15 when mouth side is F-1
It is in the working position 15c, and as shown in figure c, when the tap face F-2 is near the limit of use, it is in the working position 15c.

In this way, the position, especially the direction, of the hammer head 15 can be shifted at each time of the chipping operation by means of the guide groove 23, which matches the movement trajectory E of the tip of the cooler. It is possible to scrape off the tip by aligning it with the tip surface of the tip C of the plugging machine A and the taphole B surface that faces it.

Furthermore, as shown in FIG. 7, a center pin 26 is attached to the tip of the rotating shaft of the rotating mechanism 16 of the air hammer device.
To explain the operation when the center pin 26 is provided, the tip of the center pin 26 is held at the center position under the tap hole surface by the pressing force of the forward and backward movement cylinder 19 during the lifting operation.

This causes the hammer 15 to move backward, and then,
The hammer head 15, which can maintain an effective interval when moving forward and is provided at a plurality of equal angles, has its center of rotation fixed by the center pin 26, so that the hammer head 15 can maintain an effective interval when moving forward, and the center of rotation of the hammer head 15 is fixed by the center pin 26. Accurately draw a circle around the taphole without
It can be torn off with more effective striking force.

The impact during this chipping operation can be reduced by the shock absorbing spring 24 supporting the underframe 17 on the machine frame 4 and the taphole closing machine A that connects it. There is no adverse effect on the closure machine to which the attachment device is attached.

In the above drawing, the guide grooves 23 for guiding the movement of the underframe 17 are provided in two upper and lower grooves, but they may be provided in one groove. In this case, the guide wheels 21 supported by the shock absorbing springs 24 are arranged at regular intervals so that only the front guide wheels 21 enter the guide groove 23 upward. , you can reach your goal.

Furthermore, in the specific explanation based on the above drawings,
Although the explanation has been given on the case where the device is attached to the tip of a blocker as a dedicated device, it can also be easily applied to a hole-opening device as a dedicated device.

[Effect of idea]

The mounting device of the present invention separates the repair device from the attachment part for a dedicated taphole treatment machine such as a blocker or hole-opening machine, and the repair device can move forward and backward. The area occupied is small, making installation work easier, and the repair work section can always be moved in line with the movement trajectory of the tip of the taphole blocker, allowing repair work to be carried out efficiently and reliably. can.

[Brief explanation of the drawing]

Figures 1 to 4 are diagrams showing the structure of the device of the present invention. Figure 1 shows the overall configuration partially in cross section, and Figure 2 is a view of Figure 1 viewed from the - line. 3 shows the structure of the machine frame to which the repair device is attached, and FIG. 4 is a diagram showing the state in which the repair device is attached. FIG. 5 shows an operational diagram of the device of the present invention with one frame removed. FIG. 6 is a diagram showing the movement locus of the taphole blocker when it operates. FIG. 7 shows another embodiment. A: Machine dedicated to taphole processing (taphole closing machine), B:
Taphole, C: Tip, E: Tip movement trajectory, G:
Deposits, D: Working surface, F-1: Initial taphole surface,
F-2: Final taphole surface, 1: Mounting device, 2: Repair device, 3: Drive mechanism, 4: Machine frame, 4a: Mounting part, 5: Annular connection hole, 6: Fixed frame, 7: Holder Metal fittings, 8: Handle, 9: Sliding part, 10: Crosspiece, 1
1: Lifting air cylinder with brake, 12 rod, 13: Stopper with adjustment screw, 14: Air cylinder, 15: Hammer head, 16: Rotation mechanism, 17: Underframe, 18: Mounting frame, 19: Cylinder for forward and backward movement , 20: Rod, 21: Guide wheel, 2
2: Side plate, 23: Guide groove, 24: Shock absorption spring,
25: Bracket, 26: Center pin.

Claims (1)

[Scope of utility model registration request] A connecting part to be connected to the gun outlet processing machine and a machine frame connected to the connecting part are provided, and the machine frame is provided with a repair device and a driving means for moving the repair device forward and backward, and the machine frame is provided with the above-mentioned dedicated machine. A mounting device for a blast furnace taphole face repair device, characterized in that it is provided with a guide that matches the movement locus of the tip when the machine is in operation.