JP2874936B2 - Sleeve brick insertion device for converter tap hole - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a sleeve brick insertion device for a converter tap hole drilling machine, and more specifically, to a replacement sleeve at the tip of a drilling member of a drilling machine. The present invention relates to a device for supporting a brick and inserting the above-mentioned sleeve brick into a converter tap hole.

[Prior Art] FIG. 7 is a schematic view showing a conventional perforation and sleeve brick insertion method. In this method, the empty furnace 10
Is slightly tilted in an upright state, and a self-propelled drilling vehicle 16 is placed on the deck 14 in the hearth to perform drilling work. The piercing member 18 of the piercing vehicle 16 is of an air breaker type. An operator operates the piercing member 18 as shown in the drawing to insert the piercing member 12 into the tap hole 12 of the furnace body 10 and break the remaining sleeve brick. Subsequently, a sleeve brick is attached to the piercing member 18, that is, the tip of the air breaker, and the sleeve brick is inserted into the tap hole 12. The sleeve brick is fixed in place by welding the flange portion of its own mounting bracket to the flange of the tap hole 12.

[Problems to be Solved by the Invention] In the above-mentioned conventional methods of perforating and inserting a sleeve brick, however, since various facilities are present in the hearth, these are obstructive and large-sized machines having a high perforating mechanism. Cannot be used, and the work efficiency and safety are not good.

On the other hand, a large space is opened in front of the furnace, and the above-described problem in the hearth does not occur. However, when work is performed from the front of the furnace, the furnace body is in an upright state, hot air rises from the furnace opening, and fire is blown out from the tapping hole, which is rather a hearth work environment for humans. Than it is. Therefore, it is desired to automate the operation of the piercing member. In particular, regarding the insertion of the sleeve brick, unlike the hearth side, the sleeve brick is inserted downward, so prior to this, the sleeve brick is firmly attached to the insertion member (for example, even if a perforated member is used). It is necessary to support.

The present invention has been made based on the above-described viewpoints, and has a drill-type drilling member and a feed mechanism for projecting / retreating the drilling member in the axial direction thereof. It is an object of the present invention to provide a device for supporting a replacement sleeve brick at the tip of the drilling member of a machine and inserting the sleeve brick into the tapping hole.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, a radially inwardly extending portion is formed on an inner wall of a center hole of a sleeve brick, and a chuck rod is provided on the piercing member. Built in,
The chuck rod is provided so as to be able to protrude / retreat in the axial direction of the piercing member and to be rotatable about the same axis, and to be capable of being inserted into the center hole of the sleeve brick at the tip of the chuck rod. A radially outwardly extending portion that can be selectively engaged with the inwardly extending portion in relation to the rotational position of the sleeve brick, and the back of the inwardly extending portion of the sleeve brick and the perforated member are fed out. The sleeve brick is gripped by the tip of the piercing member by the engagement of the rod with the back surface of the outwardly extending portion and the contact between the rear end of the sleeve brick and the tip of the piercing member. And is characterized by the following.

[Operation] With the above configuration, in the insertion device according to the present invention, first, the sleeve brick is centered on the rod. Then, the rod is extended from the piercing member, and is inserted into the center hole of the sleeve brick until the outer protrusion at the tip thereof exceeds the inner protrusion. Next, the rod is rotated to a rotational position where the inner projection and the outer projection of the rod can engage. And when the rod is pulled back, the back surface of the inward protrusion and the back surface of the outer protrusion of the rod engage,
The rear end of the sleeve brick and the front end of the perforated member abut. As a result, the sleeve brick is gripped or chucked by the tip of the perforated member.

Embodiment FIG. 2 is a schematic view showing the relationship between a perforated vehicle according to the present invention and a furnace body when perforating and inserting a sleeve brick.
The furnace body 10 is set to a state where the furnace body 10 is further inclined by 20 ° from the completely upright state. On the other hand, the perforated vehicle 30 according to the present invention is arranged on the deck 26 in front of the furnace, and the perforated member 50 faces the tapping port 12 of the furnace body 10. The deck 26 has positioning holes 28-28 for the two outriggers 36a and 36b on the front side of the perforated vehicle 30.

3 and 4 are a plan view and a side view showing details of the perforated vehicle 30. Four wheels 34 are provided on a vehicle body 32 of the perforated vehicle 30, and outriggers 36 a to 36 d are disposed on the front, rear, left, and right sides of the vehicle body 32 corresponding to each wheel 34. Each of the outriggers 36a to 36d can independently adjust the amount of lateral protrusion and the height.

An inclined base 44 is supported by the pillars 42 on the vehicle body 32.
The inclination of the base 44 is 20 ° with respect to the plane, and is adapted to the inclination of the tap hole 12 due to the inclination of the furnace body 10. A sliding frame 46 that can move back and forth along the base 44 by a mechanism (not shown) is provided on the base 44, and a perforated member 50 is fixed to the frame 46.

The piercing member 50 is a drill type having a rotation axis parallel to the inclined surface of the base 44, and is driven by a hydraulic motor 52. A cutting blade 54 is provided at the tip of the piercing member 50 in a known manner. The piercing member 50, at the time of piercing, while rotating the tip,
The feed mechanism including the base 44 and the frame 46 enables the projecting / retracting drive in the axial direction.

A telescopic deck 64 is provided below the front stage 62 of the body 32.
Is arranged. The front end 66 of the telescopic deck 64 is formed to be truncated and inclined downward at an angle of 20 °.
The inclined plane of the front end 66 matches the exposed plane of the flange 24 of the tap hole 12.

A pair of rails 68 are laid on the front stage 62 from the center to the side, and a carrier 72 is movably disposed on the pair. The carrier 72 is provided with a holder 74 whose angle can be changed between 0 and 20 °. On this holder 74, a replacement sleeve for inserting into the sleeve brick set hole 22 after drilling the tap hole 12 is provided. Brick 76 is supported. holder
A locking mechanism (not shown) for preventing the sleeve bricks 76 from rolling and displacing in the axial direction is provided at 74. The sleeve brick 76 is moved along the rail 68 on the deck 62 to the body 32.
The sleeve brick 76, which is movable between the side position of the perforated member 50 and the center position coaxial with the perforated member 50, is gripped by a chuck mechanism built in the perforated member 50 and inserted into the sleeve brick set hole 22 after perforation. Is done.

FIG. 1 is a vertical sectional side view showing a relationship between a sleeve brick 76 and a chuck mechanism built in a perforating member 50.
FIG. 5B and FIG. 5B are longitudinal front views showing the sleeve brick and the chuck mechanism in the non-chuck position and the chuck position.

The sleeve brick 76 has a flange 84 at one end for mounting.
At the other end, a triangular pyramid-shaped blind lid 85a and a retaining flange 85b
And a brick body 80 disposed around the sleeve hardware 82. At the entrance side of the central hole 78 of the sleeve brick 76, four steel pipes 86 (radially inwardly extending portions) are provided.
At 90 ° intervals, the inner ends 88 of each steel pipe are welded to the inner wall of the metal fitting 82 for the sleeve brick set, and the inner ends 88 of the steel pipes are radially inwardly extended in the central holes 78 which engage with the following fingers 98 (radially outwardly extending parts). Functions as a unit.

The piercing member 50 is shown detached from the flange portion 56 in the middle. A chuck rod 92 is coaxially incorporated in the piercing member 50 and is connected to a piston rod of an air cylinder 94. Therefore, the rod 92 can be projected / retracted in the axial direction of the piercing member 50 by the operation of the cylinder 94. On the other hand, the other end of the air cylinder 94 is connected to a torque transmitter 96 attached to a rotating plate (not shown). Therefore, the rod 92 can be rotated around the axis of the piercing member 50 integrally with the cylinder 94 by the rotation of the transmission 96.

4 disposed at 90 ° intervals at the tip of the chuck rod 92
A star-shaped metal part having radially outwardly extending portions or fingers 98 is attached to the
Compressed air is purged from a certain clearance in the finger storage part in order to prevent thermal effects on the 98. The radius from the center axis of the rod 92 to the tip of the finger 98 is somewhat smaller than the center hole 78 of the sleeve brick 76, and therefore, the tip of the rod 92 has a steel tube 86 (radially inward) as shown in FIG. At the rotational position that does not interfere with the overhang portion), it can be inserted into the central hole 78. At this time, the rod 92 is extended by operating the cylinder 94, as described above.

Also, after the finger 98 has passed over the inner end 88 of the steel pipe 86 (first
When the rod 92 is rotated by approximately 45 ° from the position shown in FIG. 5a to the position shown in FIG. 5b, the finger 98 can contact the steel pipe inner end 88. The rotation of the rod 92 at this time is performed via the torque transmitting element 96 as described above. When the rod 92 is pulled back from this state, the inner end portion 88 of the steel pipe and the back surface of the finger 98 come into contact with each other, and the metal flange portion 84 at the rear end of the sleeve brick and the cutting blade 54 at the tip end of the piercing member 50 come into contact. Therefore, the state from the steel pipe end 88 to the flange 84 of the sleeve brick 76 is sandwiched between the finger 98 and the cutting blade 54, whereby the sleeve brick 76 is gripped by the tip of the perforated member 50. Become. On the other hand, when the rod 92 is extended again, the grip of the sleeve brick 76 is released.

A convex portion 102 (see the phantom line position in FIG. 1) is attached to the back surface of each finger 98, and the convex portion 102 engages with the hole of the steel pipe 86 when the finger 98 contacts the steel pipe inner end 88. Then, the sleeve brick 76 is securely held. Also, the star metal of the finger 98 is attached to the rod 92 by a shear bolt 104, and in the event that the finger 98 is caught and the rod 92 cannot be pulled out properly, the shear bolt 104 is cut to easily remove the star metal from the rod 92. It can be cut off.

6a to 6d are explanatory views schematically showing operations from drilling to insertion of a sleeve brick in order.

When working using the perforated vehicle 30 according to the present invention,
First, the furnace body 10 is emptied, and the furnace body 10 is set in an upright state having a predetermined angle (in this embodiment, 20 ° with respect to a vertical line) as shown in FIG. At the same time, the vehicle 30 and its attached devices and related equipment are inspected. After the preparation and adjustment of the equipment such as the set of the sleeve bricks 74 and the idling of the hydraulic pumps are completed, the vehicle 30 is run and brought to the furnace front position on the deck 26.

Then, the vehicle 30 is positioned in accordance with a predetermined procedure, centering of the perforated member 50 and the tapping hole 12 is performed, and utility hoses are connected to a predetermined portion of the vehicle 30.
After the centering of the drilling member 50 and the tap hole 12 is completed, the drilling member 50 is driven to rotate, and the feed mechanism including the base 44 and the frame 46 projects / protrudes in the axial direction.
The evacuation drive is performed to pierce the sleeve brick set hole 22 of the tap hole 12 (see FIG. 6a). Debris generated at the time of perforation is discharged downward from the furnace port of the furnace body 10 in the upright state.

After the perforation, the replacement sleeve brick 76 is moved to the center position, and at the same time, the main body 74 is lifted, and the perforated member 50 is aligned. Next, the finger 98 is set at a rotational position where it does not interfere with the steel pipe 86, the rod 92 is extended, and the finger at the tip is
Insert 98 into the central hole 78 of the sleeve brick 76 until the position 98 exceeds the end 88 of the steel pipe. Then, when the rod 92 is rotated by about 45 ° and pulled back, the sleeve brick 76 is gripped at the tip of the piercing member 50 in the manner described above (see FIG. 6b).

Next, the feed mechanism for the piercing member 50 is operated to insert the sleeve brick 76 into the sleeve brick set hole 22 after piercing. Sleeve brick 76 is the sleeve brick set hole 22
(See FIG. 6c), the rod 92 is extended again to release the gripping of the sleeve brick 76. Then, the rod 92 is rotated by about 45 ° so that the finger 88 and the steel pipe 86 do not interfere with each other, and the rod 92 is inserted into the center hole of the sleeve brick 76.
At the same time, the punching member 50 is withdrawn from the tapping port 12 (see FIG. 6d).

The sleeve brick 76 is fixed at a predetermined position by welding the flange portion 84 to the flange of the tap hole 12. Desirably, this welding is performed in a state where the sleeve brick 76 is gripped by the tip of the piercing member 50.

In the above embodiment, the inner end 88 of the steel pipe 86
An inward projection in the central hole 78 for holding the sleeve brick 76 is formed, and the inward projection is a sleeve hardware.
It is also possible to form from a piece of metal such as an angle welded to 82.

[Effects of the Invention] According to the converter for inserting a sleeve brick of a converter tap hole according to the present invention, an inwardly extending portion in a central hole of the sleeve brick;
In combination with the chuck mechanism incorporated in the perforated member, the sleeve brick can be reliably held at the tip of the perforated member. Therefore, it is possible to insert the sleeve brick into the tapping hole by using the feed mechanism of the perforated member, and it is possible to reduce the human work and improve the reliability of the work.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a relationship between a sleeve brick and a chuck mechanism incorporated in a piercing member, and FIG. 2 shows a relationship between a perforated vehicle according to the present invention and a furnace body when piercing and inserting a sleeve brick. FIGS. 3 and 4 are a plan view and a side view showing details of the perforated vehicle, FIGS. 5a and 5b.
The figure is a vertical sectional front view showing the sleeve brick and the chuck mechanism at the non-chuck position and the chuck position, and FIGS. 6a to 6d.
The figure is an explanatory view schematically showing the steps from drilling to sleeve brick insertion in order, and FIG. 7 is a schematic view showing a conventional drilling and sleeve brick insertion method. 10 ... furnace body, 12 ... tap hole, 26 ... furnace front deck, 30 ... perforated vehicle, 50 ... perforated member, 76 ... sleeve brick, 78 ... central hole,
80… Brick body, 82… Hardware for sleeve brick set, 84
... Flange part, 85a ... Triangular pyramid blind lid, 85b ... Retaining flange, 86 ... Steel pipe (radially inwardly protruding part), 92 ... Chuck rod 94 ... Air cylinder, 96 ... Torque transmission element, 98 ... Finger ( Radial outward extension)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Moriyama 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Takaki Izunaga 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. (72) Inventor Sue Kubo 1-1, Higashihama-cho, Yawatanishi-ku, Kitakyushu-city, Fukuoka Prefecture (72) Inventor Takahiro Nishimura 1-1-1, Higashihama-cho, Yawatanishi-ku, Kitakyushu, Fukuoka Prefecture Inside Ceramics Co., Ltd. (72) Inventor Yasuo Nakamura 1-1, Higashihama-cho, Yawatanishi-ku, Kitakyushu-city, Fukuoka Prefecture Inside Kurosaki Ceramics Co., Ltd. (56) References JP-A-55-138014 (JP, A) JP-A-62-2606 (JP, B2) Jigyo Sho 55-40187 (JP, Y2) Jigyo Sho 53-4168 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) C21C 5/46 103 B28D 1 / 14 B28D 7/00 F27 D 1/16 C21B 7/12

Claims (1)

(57) [Claims] The present invention relates to a drilling machine for a converter tap hole, comprising: a drill-type piercing member; and a feed mechanism for projecting / retreating the piercing member in an axial direction thereof. An apparatus for supporting a sleeve brick and inserting the sleeve brick into the tapping hole, wherein a radially inwardly extending portion is formed on an inner wall of a center hole of the sleeve brick, and a chuck rod is provided on the piercing member. And projecting the chuck rod in the axial direction of the piercing member /
The retractable operation and the rotational operation around the coaxial center are provided, and the tip of the chuck rod can be inserted into the center hole of the sleeve brick and selectively in relation to the rotational position of the rod. A radially outwardly extending portion engageable with the inwardly extending portion; and a connection between a back surface of the inwardly extending portion of the sleeve brick and a back surface of the outwardly extending portion of the rod fed out from the perforated member. And the contact between the rear end of the sleeve brick and the front end of the perforating member, whereby the sleeve brick is gripped at the front end of the perforation member, Steel mouth sleeve brick insertion device.