JP3014554B2 - Sliding nozzle hole automatic cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cleaning device for removing solidified metal which is closed or adhered in a sliding nozzle hole and a pouring nozzle hole of a sliding nozzle device installed at the bottom of a molten metal pot. It is about.

[0002]

2. Description of the Related Art At present, a sliding nozzle device mounted on a ladle for handling molten steel is transported to a ladle maintenance yard in a closed state after casting is completed and is maintained. If not completely removed with gold,
It is conceivable that the molten steel will solidify and clog due to the remaining metal during the next casting, causing non-opening. For this reason, this operation is important, requiring certainty. Therefore, conventionally, as a method of removing metal, cleaning work has been performed by manually inserting an oxygen lance from the lower nozzle, but this is a dangerous work under high heat and bad environment and automation is desired. ing. However, this cleaning method requires the delicate technique of always bringing the lance tip into contact with the bullion, making it hot red, and performing fusing.At the same time, frequent cleaning is required depending on the lance wear condition and the position of the bullion. Had been adjusted.

[0003]

As described above, it is dangerous work under extremely high heat and bad environment and automation is desired. However, mechanization of work requires complicated operation. It is difficult at present, and the reality is that automation has not yet been achieved. Therefore, when considering automation,
Since mechanization using a consumable lance requires constant measurement of the consumable state of the lance and movement in accordance with the measurement, the use of a non-consumable blowpipe can be considered as an alternative. However, even if the cleaning is performed only with the non-consumable type blow pipe, there is a danger of the blow pipe being melted by blowing back the cutting flame for the object in the closed state.

[0004] Even when a through-hole is present from the beginning, it is impossible to completely remove adhered metal by simple rotary motion due to re-solidification, and it also becomes a locally heated state during a simple motion, resulting in an injection nozzle. And other refractory materials.
In view of the above situation, the present invention automatically performs cleaning to remove solidified metal that is closed or adhered in the sliding nozzle hole and the injection nozzle hole of the sliding nozzle device installed at the bottom of the molten metal pot. The purpose is to provide the device.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to achieve such an object advantageously, and the gist of the invention is to provide a sliding nozzle installed at the bottom of a molten metal pot. In the maintenance of the plate-shaped sliding nozzle of the device and the hole through which the metal passes after using the injection nozzle, an oxygen lance for initially opening the solidified metal that has closed the inside of the nozzle and a lance to supply according to the consumption of the lance. A feed mechanism, a water-cooled non-consumable blowpipe for removing the remainder after piercing, and a swinging mechanism for eccentrically turning the blowpipe for performing gas cleaning by it, a forward and backward mechanism for moving the blowpipe back and forth,
The automatic cleaning apparatus for a sliding nozzle hole is provided with a traversing mechanism for aligning the blowpipe with the sliding nozzle hole.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment in a work for preparing a molten steel ladle. FIG. 1 shows a cleaning device for removing metal in a sliding nozzle and an injection nozzle hole of a sliding nozzle device. Reference numeral 1 denotes a traveling vehicle for moving the entire apparatus to a working position, 2 denotes a traveling rail, 3 denotes a traversing device for positioning with an object, 4 denotes a traversing motor,
5 is a ball screw for traversing, 6 is a guide for traversing, 7 is an elevating device for correcting vertical displacement with respect to an object, 8 is an elevating guide, 9 is an elevating motor, 10 is an elevating body, and 16 is a blow pipe. An arm with a gas pipe at the tip and inside, 11
Is an arm holder with a built-in rotation mechanism and a bearing for the front-rear mechanism, 12 is a rotation motor that performs oscillating motion during washing,
13 is a pulley for rotation, 14 is a belt for transmitting drive to the arm, 15 is a rotating body attached to the arm, 17 is a linear motor for moving the arm back and forth during cleaning, 18 is a beam for transmitting the longitudinal movement of the motor, 19 Is a blowpipe base for holding the blowpipe, 20 is an eccentricity changing bolt for changing the radius of rotation when the blowpipe swings, 21 is an eccentric angle changing motor for changing the angle of the blowpipe, and 22 is a rotation that converts the rotation into a linear motion. A screw nut, 23 is a connecting portion for transmitting this movement to the blow tube, 24 is an eccentric angle adjusting shaft, 25 is a non-consumable blow tube for performing gas cleaning, 26 is a consumable oxygen lance used at the time of initial opening, and 27 is a front and rear oxygen lance. A lance motor, 28, which performs the movement, rotates with the motor and is a lance supply subassembly which supports the forward and backward movement of the lance.

FIG. 2 is a sectional view of the present cleaning apparatus. 29 is a traveling wheel for moving the entire apparatus, 30 is a motor for traveling, 31 is a driving gear for transmitting the rotation of the motor, 32 is a wheel gear for transmitting the driving force of the motor to the wheel, and 33 is a wheel gear. Holder for wheel supporting rotation, 34 worm gear and 35 worm wheel are motor 9
, The direction of rotation of the drive is changed, and vertical movement is performed by the 36 ball screws for lifting. 37 is a bearing for rotating the arm, 38 is a roller for moving the arm back and forth, 39 is a cover, 40 is a blow pipe fixing part, and 41 is a gas pipe for the blow pipe.

FIG. 3 is a top view of the cleaning apparatus according to the present invention. FIG. 4 is a structural view of a traveling mechanism of the cleaning device according to the present invention. FIG. 5 is a structural view of a traversing mechanism of the cleaning device according to the present invention, and FIG. 6 is a structural diagram of a lifting mechanism of the cleaning device according to the present invention. FIG. 7 is a structural view of a rotating mechanism of the cleaning device according to the present invention. Reference numeral 42 denotes a wheel shaft, reference numeral 43 denotes a spacer for mounting 38 rollers to the arm holder, reference numeral 44 denotes a mounting bolt, and reference numeral 45 denotes a nut.

FIG. 8 is an eccentric mechanism diagram of the cleaning apparatus according to the present invention. Reference numeral 46 denotes a guide for changing the amount of eccentricity when the 40 is moved by the 20 adjusting bolts. FIG. 9 is a view showing a lance supply mechanism. Reference numeral 47 denotes a lance supply rotary member for transmitting the rotation of a motor of a lance, and reference numeral 48 denotes a lance support. FIG.
Reference numeral 0 is a cross-sectional view of a sliding nozzle hole as an object. In the initial state, the inside of the nozzle is closed by the base metal 49 as indicated by oblique lines, and the lower nozzle 50 is cut from the left side. Reference numeral 51 denotes an upper nozzle, 52 denotes an upper sliding plate, and 53 denotes a lower sliding plate. FIG. 11 shows the order of cleaning with the non-consumable blowpipe.
When the cleaning is performed by the non-consumable type blow pipe of the sliding hole 54, the operation is performed after the initial opening is performed.

Next, the working method of the present invention will be described. First, the apparatus is moved to the working position by the traveling vehicle 1. As the traveling mechanism, as shown in FIG. 3, the rotation of the motor 30 is rotated by the gears 31 and 32 to rotate the wheels 29 and travels on the rail 2. Then, in order to set the lance and the upper part of the nozzle hole (FIG. 10), which is the work object, the horizontal alignment is performed by the three traversing devices as shown in FIG. With the lifting device.
As the traversing movement, the ball screw 5 is rotated by the motor 4 and moves along the guide 6. As for the vertical movement, as shown in FIG. 2, the direction of rotation of the motor 9 is changed by the worm gears 34 and 35, and the vertical ball screw 36 is rotated to perform vertical movement along the guide 8.

[0011] Further, as shown in FIG.
By the rotation of the lance motor of 7 and 47, 28, 48, the lance is inserted into the nozzle and advanced while emitting oxygen. During the drilling, the lance is advanced so as to always contact the base metal, and is cut. Perform initial opening. After the penetration, the supply of oxygen is stopped, and then the lance is retracted by reversing the motor 27. After the initial opening by the lance, the blowing tube is aligned with the initial opening hole by the traversing device of 3, and then advanced by the linear motor 17 to align with the tip of the lower nozzle.
At this time, the movement of the 17 linear motion motors is
To 16 arms and along 38 rollers. After the alignment of the blowpipe, cutting is started from the through hole by preheating gas and cutting oxygen, and from top to bottom as shown in FIG. 10 as shown in FIG. 10 to prevent resolidification of the metal and deterioration of the refractory. Perform the rocking motion as shown.

This oscillating motion causes the rotation of the 12 motors to be 1
It is transmitted to 15 rotating bodies attached to 16 arms by 3 pulleys and 14 belts. In the swinging motion, the direction of the blow pipe is determined by the eccentric amount changing bolt 20 and the eccentric angle changing motor 21 before the operation to determine the turning radius and the direction angle. The eccentricity can be changed by 20 bolts.
The guide of No. 6 moves the blow pipe fixing part of No. 40. To change the eccentric angle, the rotation of the motor 21 is rotated by the screw nut 22 via the connecting portion of the longitudinal movement 23 to rotate the eccentric angle adjusting shaft 24 to change the angle 46.

After the cleaning is completed, the gas is stopped, the arm is retracted, and the vehicle is moved to the initial position by one traveling vehicle. The direction of the blowpipe is adjusted during the washing by the above method, and the swinging motion is performed by swinging the blowpipe so that the cutting gas is accurately applied to the base metal as shown in FIG. This is to prevent resolidification of the shaved metal, prevent complete removal, and prevent deterioration of refractories such as an injection nozzle. If the metal remains even after washing by this method, the arm is advanced and inserted into the nozzle to make the blow pipe close to the metal.

[0014]

As described above, according to the present invention, the solidified metal which is closed or adhered in the swing nozzle hole and the injection nozzle hole of the sliding device installed at the bottom of the molten metal pot is removed. Can be performed automatically, eliminating the danger under high heat, which has conventionally been caused by manual labor, and has an industrially excellent effect that enables labor saving and high efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cleaning device of a sliding nozzle device.

FIG. 2 is a sectional view of a cleaning device,

FIG. 3 is a top view of the cleaning device according to the present invention,

FIG. 4 is a structural diagram of a traveling mechanism of the cleaning device according to the present invention,

FIG. 5 is a structural view of a traversing mechanism of the cleaning device according to the present invention,

FIG. 6 is a structural diagram of an elevating mechanism of the cleaning device according to the present invention,

FIG. 7 is a structural diagram of a rotation mechanism of the cleaning device according to the present invention,

FIG. 8 is an eccentric mechanism diagram of the cleaning device according to the present invention,

FIG. 9 is a view showing a lance supply mechanism;

FIG. 10 is a sectional view of a sliding nozzle hole as an object;

FIG. 11 is a diagram showing an order at the time of cleaning with a non-consumable blow tube.

[Explanation of symbols]

 Reference Signs List 1 traveling cart 2 traveling rail 3 traversing device for positioning with object 4 traversing motor 5 traversing ball screw 6 traversing guide 7 elevating device 8 elevating guide 9 elevating motor 10 elevating body 11 arm holder 12 rotating motor Reference Signs List 13 rotation pulley 14 belt for transmitting drive to arm 15 rotating body 16 arm 17 linear motor 18 beam 19 blow pipe base 20 eccentric amount changing bolt 21 eccentric angle changing motor 22 screw nut 23 connecting portion 24 eccentric angle adjusting shaft 25 gas Non-consumable blowpipe for cleaning 26 Consumable oxygen lance 27 Lance motor 28 Lance supply dependent body 29 Running wheel 30 Motor for running 31 Drive side gear 32 Wheel side gear 33 Wheel holder 34 Worm gear 35 Worm Wheel 36 for lifting Screw 37 Bearing for rotating the arm 38 Roller for moving the arm back and forth 39 Cover 40 Blow-pipe fixing part 41 Gas pipe of the blow-pipe 42 Wheel shaft 43 Spacer 44 Mounting bolt 45 Nut 46 Eccentricity change guide 47 Rotating body for lance supply 48 Support for lance 49 Ingot 50 Lower nozzle 51 Upper nozzle 52 Upper sliding nozzle 53 Lower sliding nozzle 54 Sliding hole

Continuing on the front page (72) Inventor Bunnosuke Shioda 4-29-5 Taito, Taito-ku, Tokyo Japan Sping Co., Ltd. (72) Yuji Watanabe 4-29-5 Taito, Taito-ku, Tokyo Japan Sping Stock In-house (56) References JP-A-6-63730 (JP, A) JP-A-4-113153 (JP, U) JP-A-1-12856 (JP, U) (58) Fields surveyed (Int. . ^7, DB name) B22D 43/00 B22D 11/10 340 B22D 41/44

Claims (1)

(57) [Claims] 1. In the maintenance of a plate-like sliding nozzle of a sliding nozzle device installed at the bottom of a molten metal pot and a hole through which a metal passes after use of an injection nozzle, a solidified metal blockaged inside the nozzle is initially opened. An oxygen lance for drilling and a lance feed mechanism for supplying the lance according to the consumption state of the lance;
After piercing, a water-cooled non-consumable blow pipe for removing the residual, a swing mechanism for eccentrically turning the blow pipe for performing gas cleaning, a forward / backward moving mechanism for moving the blow pipe back and forth, and a sliding nozzle hole for the blow pipe A sliding nozzle hole automatic cleaning device, comprising a traversing mechanism for performing positioning.