JP2012091201A - Tundish car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tundish car that can highly sustain operability.SOLUTION: A tundish car A can move along the rails R provided on the casting floor F in a continuous casting facility and has a tundish 2 tiltably. The tundish car A is provided with an outrigger jack 30 to prevent the tundish car 2 from overturning when the tundish 2 tilts on the tundish car A. The outrigger jack 30 includes a hydraulic cylinder 31 that extends to and contracts from the casting floor F and a support rod 37 with a footboard 38 that contacts with the casting floor F when the hydraulic cylinder 31 extends and separates therefrom when the hydraulic cylinder contracts. The outrigger jack 30 is provided on the side to which the center of gravity moves when the tundish 2 of the tundish car A tilts.

Description

  The present invention relates to a tundish car. The continuous casting equipment is provided with a tundish for pouring molten metal into the mold. After the molten metal is poured into the mold, the remaining steel and noro (hereinafter referred to as cocoons) remain in the tundish. The soot has an adverse effect on the quality of the cast product, so it must be removed from the tundish. For this reason, after pouring the molten metal into the mold, the tundish is moved from the pouring position on the mold to the standby position, and the tundish is tilted at the standby position to discharge the residue left in the tundish. An excavation work is performed. The present invention relates to a tundish car that moves between a pouring position and a standby position on a casting floor.

Based on FIG. 10 and FIG. 11, the prior art of patent document 1 is demonstrated.
FIG. 10 shows an outline of the casting floor F of the continuous casting equipment. Reference numeral F denotes a casting floor, and reference numeral M denotes a mold. Moreover, the code | symbol I has shown the casting position and the code | symbol II has shown the removal position. A pair of rails R is laid between the casting position I and the discharge position II, and the tundish car 101 travels on the rails R. Further, at the evacuation position II, a pit T is provided on the side of the rail R, and a pot P for receiving the culm discharged from the tundish 102 described later is accommodated in the pit T. .

The tundish car 101 is provided so as to be movable on the rail R of the casting floor F. The tundish car 101 is placed on the tundish 102 and travels between the casting position I and the discharge position II.
As shown in FIG. 11, the tundish car 101 includes a carriage 110, a lifting beam 121, a lifting device 130, and a tilt cylinder 140. The carriage 110 has wheels 112, and the wheels 112 roll on a rail R installed on the casting floor F. The lifting device 130 includes a lifting cylinder 131 and a lifting guide 132. The tilt cylinder 140 is a hydraulic cylinder having a cylinder 141 and a piston rod 142.

When the tilting cylinder 140 is extended, the elevating beam 121 swings with one end as a fulcrum, and the tundish 102 is tilted. Then, the remaining steel and soot in the tundish 102 are discharged to the pot P in the pit T.
At this time, the tip portion of the frame 111 of the carriage 101 is supported from below by a fall prevention cylinder 156 provided on the casting floor F to prevent the tundish car 101 from falling due to the tundish 102 tilting. Yes.

However, the conventional technique has a problem that the position where the tundush car 101 can be stopped is limited to the position where the fall prevention cylinder 156 is provided.
And, it is necessary to make the alignment between the fall prevention cylinder 156 and the tundish car 101 accurate, so that the traveling speed of the tundish car 101 is decelerated and it takes time for fine adjustment of the alignment, so the operation efficiency is reduced. There is a problem of lowering.

Japanese Patent Laid-Open No. 2002-239689

  In view of the above circumstances, an object of the present invention is to provide a tundish car capable of maintaining high operation capability.

A tundish car according to a first aspect of the present invention is a tundish car that is movable on a rail installed on a casting floor of a continuous casting facility and is mounted so that the tundish can be tilted, wherein the tundish is the tundish. The tundish car is provided with an overturn prevention means for preventing the tundish car from overturning when tilting on the car.
The tundish car according to a second aspect of the present invention is the attitude change mechanism according to the first aspect, wherein the overturn prevention means is in a retracted position when the tundish car moves and is in an operating position when the tundish car tilts. It is characterized by having.
A tundish car according to a third aspect of the present invention is the first or second aspect, wherein the tundish is provided with a hot water outlet, and the fall prevention means is installed at a position where a pair sandwiches the hot water outlet. It is characterized by.
A tundish car according to a fourth aspect of the present invention is the first, second or third aspect of the present invention, wherein the overturn prevention means includes a posture changing mechanism comprising a hydraulic cylinder that expands and contracts toward the casting floor, and the hydraulic cylinder extends when the hydraulic cylinder extends. An outrigger jack comprising a support member that comes into contact with a casting floor and separates when contracted, and the outrigger jack is provided on the side of the center of gravity when the tundish in the tundish car tilts. And
The tundish car according to a fifth aspect of the present invention is the first, second or third aspect of the present invention, wherein the fall prevention means includes a posture changing mechanism comprising a hydraulic cylinder that expands and contracts toward the casting floor, and the hydraulic cylinder extends when the hydraulic cylinder extends. A rail catch comprising a rail engaging member that engages with a rail and disengages when contracted, and the rail catch is provided on a side opposite to a gravity center moving side when the tundish in the tundish car tilts. It is characterized by being.
A tundish car according to a sixth aspect of the present invention is the first, second or third aspect of the present invention, wherein the overturn prevention means includes a posture changing mechanism including a hydraulic cylinder that expands and contracts toward the casting floor, and the hydraulic cylinder extends when the hydraulic cylinder extends. A floor catch comprising a floor engaging member that engages with an engaged portion formed on a casting floor and disengages when contracted. When the tundish in the tundish car tilts It is provided on the opposite side to the center of gravity movement side.

According to the first aspect of the present invention, since the fall prevention means is provided in the tundish car, it is not necessary to accurately position the stop position when stopping traveling in order to tilt the tundish. For this reason, it is not necessary to greatly reduce the speed when the tundish car is stopped, and time is not required for fine adjustment of the alignment, so that the operation efficiency is improved.
According to the second aspect of the present invention, if the fall prevention means is set to the operating position by the posture changing means, the tundish tilting operation can be immediately started. In this case, the tundish car does not fall. Further, if the fall prevention means is set at the retracted position, the tundish car can immediately start moving, so that safety can be ensured and the operation efficiency is improved.
According to the third invention, even when the center of gravity when the tundish is tilted is in an unstable state, the two fall-preventing means support at the position sandwiching the drain port, so that the safety when the tundish is tilted Will improve.
According to the fourth invention, when the hydraulic cylinder extends and the support member settles on the casting floor, the tundish car is supported on the side where the center of gravity moves when the tundish is tilted. High effect.
According to the fifth aspect of the present invention, when the hydraulic cylinder extends and the rail engaging member engages with the rail on the side opposite to the gravity center moving side when the tundish is tilted, the tundish car is pulled in a direction not to fall down. Car fall prevention effect is high.
According to the sixth invention, when the hydraulic cylinder extends and the floor engaging member engages with the engaged portion formed on the casting floor opposite to the center of gravity moving side when the tundish is tilted, the tundish car Because it pulls in the direction that doesn't fall, the tundish car's fall prevention effect is high.

1 is a side view of a tundish car A according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of a usage state of the outrigger jack 30 of FIG. 1. It is an enlarged view of the outrigger jack 30 of FIG. It is a rear view of the tundish car A of FIG. It is a top view of the tundish car A of FIG. It is a rear view of tundish car B concerning a 2nd embodiment of the present invention. (A) is a partial plan view of the tundish car B of FIG. 6, and (B) is an enlarged side view of the rail catch 50. FIG. It is a side view of the tundish car C concerning a 3rd embodiment of the present invention. (A) is an enlarged side view of the floor catch 60, and (B) is an enlarged plan view of the engagement hole 70 and the rail R. FIG. It is operation | movement explanatory drawing of a tundish car. It is explanatory drawing of the conventional fall prevention apparatus.

Next, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 4 and 5, the tundish car A has a structure in which the tundish 2 is tiltably supported on the carriage 10. The carriage 10 has a bottom frame 11 and side frames 12 rising from both the left and right sides of the bottom frame 11. A wheel 13 is pivotally supported at the lower part of the side frame 12 and is rotated by a drive source such as a motor. The wheels 13 roll on the rail R so that the tundish car A travels. The running procedure between the casting position and the rejecting position of the tundish car A and the tilting procedure of the tundish 2 at the rejecting position are the same as in FIG.

The tundish 2 is a pentagonal container in plan view for containing molten metal, and has a hot water discharge port 21 at a substantially intermediate position on one side of the tilt side, and a plurality of pouring nozzles 22 on the lower surface.
The tundish 2 is provided with two support shafts 23 on both the left and right sides, and is placed on a weighing mechanism 15 built in the tilting frame 14. In addition, the measurement mechanism 15 (refer FIG. 1) is comprised with the load cell.
A tilt frame 14 is disposed above the side frame 12 and supports the tundish 2 so as to be tiltable.

  An outrigger jack 30 that is a fall prevention means is provided on an end surface of the side frame 12 of the carriage 10 on the side of the hot water outlet 21 of the tundush 2. This attachment position is on the gravity center moving side when the tundish 2 is tilted, and two sets are provided at positions sandwiching the hot water outlet 21 of the tundish 2.

Based on FIG. 1 and FIG. 2, the structure of the tundush car 2 will be further described.
A measuring mechanism 15 using a hydraulic cylinder or the like is built in the tilting frame 14 on the upper surface of the side frame 12, and a support shaft 23 of the tundush 2 is mounted via a roller for adjusting the horizontal position of the tundush 2. It has been.
A tilt link 16 is attached to the end of the tilt frame 14 on the side of the hot water outlet. On the other hand, a tilt cylinder 17 is attached to the inside of the side frame 12, and a piston lot 17 a of the tilt cylinder 17 is connected to the tilt frame 14 via the tilt link 16. The tilt link 16 can swing around a fulcrum pin 18 fixed to the side frame 12. Therefore, when the tilt cylinder 17 is extended, the tundish 2 can be tilted as shown in FIG. When the ring 17 is contracted to tilt, the tundish 2 can be returned to the normal position as shown in FIG.

The details of the outrigger jack 30, which is a fall prevention means, will be described with reference to FIGS.
Beams 40 are attached to the left and right side frames 12 of the tundish car A so as to protrude to the tilt side. This beam 40 is composed of a horizontal beam 41 and a vertical column 42 fixed to the upper surface of the horizontal beam 41 and rising therefrom. A vertical guide hole 43 is formed at the tip of the horizontal beam 41, and a mounting bracket 44 is formed at the upper end of the vertical column 42.

As shown in FIG. 3, the outrigger jack 30 includes a hydraulic cylinder 31 and a support rod 37. The hydraulic cylinder 31 constitutes a posture changing mechanism that expands and contracts between a retracted position when the tundish car A moves and an operating position when the tundish car A tilts.
A trunnion 33 is attached to the cylinder 32 of the hydraulic cylinder 31, and the trunnion 33 is rotatably supported by an attachment bracket 44. A support rod 37 is connected to the piston rod 34 of the hydraulic cylinder 31 via a connector 35 and a pin 36.
The support rod 37 is slidably inserted into the guide hole 43 of the lateral beam 41, and a tread plate 38 is swingably attached to the lower end of the support rod 37 with a pin 39.

  With the configuration of the outrigger jack 30 described above, the support rod 37 is constrained to slide only in the vertical direction in the guide hole 43, so that the weight of the tundish car A can be supported rigidly. On the other hand, since the swing and distortion of the tundish car A accompanying the tilt of the tundish 2 can be absorbed by the trunnion 33 and the pins 36 and 39, an excessive force is not applied to the outrigger jack 30 and the beam 40.

Next, the operation of the tundish car A of this embodiment will be described.
FIG. 1 shows the tundish car A traveling. The tundish 2 is installed on the carriage 10 in a steady posture. In this state, the hydraulic cylinder 31 of the outrigger jack 30 is contracted, and the tread plate 38 is separated from the contact plate Fb on the casting floor F. In this state, the tundish car A can travel and can perform pouring work at the pouring position.

FIG. 2 shows the time when the tundish 2 is tilted.
When the tilt cylinder 17 is reduced, the tundish 2 tilts around the fulcrum pin 18 to the right in the figure.
At this time, when the hydraulic cylinder 31 of the outrigger jack 30 is extended, the tread plate 38 comes into contact with the contact plate Fb on the casting floor F. At this time, although the center of gravity of the tundish 2 has moved from the rail R to the right side in the figure, the outrigger jack 30 supports the tundish car A further outside, so that the tundish car A does not fall down. In addition, since there are two outrigger jacks 30 and they are supported at a position sandwiching the hot water outlet 21 of the tundish 2, stability of both the tundish 2 and the tundish car A is easily secured.

  Further, in the above support state, the support rod 37 is firmly restrained by the guide hole 43 so as not to fall in the lateral direction, so that the tundish car A has a high fall prevention effect. In addition, since the tundish car A can be absorbed by the trunnion 33 and the pins 36 and 39 shown in FIG. 3, no excessive force is applied to the outrigger jack 30 and the beam 40.

Next, the tundish car B of the second embodiment will be described with reference to FIGS.
Since the basic configuration of the tundish car B is the same as that of the tundish car A, the same members are denoted by the same reference numerals and description thereof is omitted.
In the present embodiment, a rail catch 50 as a fall prevention means is attached to the side wall of the side frame 12 of the tundish car B. This attachment position is a position that can be engaged with the rail R that is far from the side where the center of gravity of the tundish 2 moves, that is, the side opposite to the side of movement of the center of gravity when the tundish 2 falls. Moreover, the two rail catches 50 are attached to both end positions of the tundish car B so as to sandwich the hot water outlet 21 of the tundish 2 in the extending direction of the rail R.

The rail catch 50 of this embodiment includes a hydraulic cylinder 51 and a catch 54. The hydraulic cylinder 51 constitutes a posture changing mechanism referred to in the claims.
The cylinder 52 of the hydraulic cylinder 51 has a trunnion 53, and the trunnion 53 is rotatably supported by a mounting blanket 46 protruding from the side frame 12.
A rod 57 is connected to the piston rod 54 of the hydraulic cylinder 51 via a connector 55 and a pin 56.
The rod 57 is slidably inserted into the guide hole 48 of the guide portion 47 protruding from the side frame 12. A catch 58 is connected to the lower end of the rod 57. The catch 58 is a rail engaging member referred to in the claims.

The catch 58 has a claw 58a that penetrates the head of the rail R and catches on the lower surface of the head. When the hydraulic cylinder 51 is slightly extended and the catch 58 is not in contact with the head of the rail R, there is no hindrance to the running of the tundish car B.
When the hydraulic cylinder 51 is slightly contracted, the claw 58a of the catch 58 is engaged with the lower surface of the head of the rail R, and the tundish car B can be prevented from falling over the rail R.

With the configuration of the rail catch 50, when the tundish 2 tilts, the tundish car B can be prevented from falling by engaging with the rail R on the opposite side to the direction in which the center of gravity moves.
That is, if the hydraulic cylinder 51 is slightly contracted when the tundish 2 is tilted, the catch 58 is engaged with the head of the rail R and pulled so that the tundish car B does not move in the falling direction. The fall can be prevented. In addition, since there are two rail catches 50 and the rail catches 50 are supported at a position sandwiching the hot water outlet 21 of the tundish 2 in the extending direction of the rail R, both the tundish 2 and the tundish car B can be easily secured.

Next, the tundish car C of the third embodiment will be described with reference to FIGS.
Since the basic configuration of the tundish car C is the same as that of the tundish car A, the same members are denoted by the same reference numerals and description thereof is omitted. In the present embodiment, a floor catch 60 as a fall prevention means is attached to the rear wall of the side frame 12 of the tundish car C. This mounting position can be engaged with the floor near the rail R which is far from the side where the center of gravity of the tundish 2 moves, that is, the side opposite to the side where the center of gravity moves when the tundish 2 falls. Position. Moreover, the two floor catches 60 are attached to both end positions of the tundish car C so as to sandwich the hot water outlet 21 of the tundish 2 in the extending direction of the rail R.

The floor catch 60 of this embodiment includes a hydraulic cylinder 61 and an engagement fitting 69. The hydraulic cylinder 61 has a posture changing mechanism referred to in the claims.
The cylinder 62, trunnion 63, piston rod 64, and connector 65 of the hydraulic cylinder 61 have substantially the same configuration as the hydraulic cylinder 51 and connector 55 of the second embodiment.
An engagement fitting 69 is formed at the lower end of the rod 67 connected to the connector 65. The shape of the engagement metal fitting 69 is a rectangular parallelepiped shape, which has a wide left-right width and a small front-rear width. This engagement metal fitting 69 is a floor engagement member referred to in the claims.

On the other hand, a hole 70 is formed in the casting floor F, and the hole 70 is a large protrusion / disengagement hole 71 in which the engagement fitting 69 can protrude and retract, and a small engagement hole 72 that engages the engagement fitting 69 so as not to appear and disappear. It consists of. The in / out hole 71 and the engagement hole 72 are provided so as to be connected along the traveling direction of the tundish car C.
When the hydraulic cylinder 61 is slightly extended at the position where the hole 70 and the engagement metal fitting 69 are aligned, the engagement metal fitting 69 can be inserted into the intrusion hole 71 and the tundish car C is moved slightly before the hydraulic cylinder 61 is slightly contracted. Then, the engagement fitting 69 is caught in the engagement hole 72.

With the configuration of the floor catch 60, when the tundish 2 tilts, the tundish car C is prevented from falling by engaging with the engagement hole 72 on the floor surface opposite to the direction in which the center of gravity moves. can do.
That is, when the tundish 2 tilts, the tundish car C is caused to travel to a position where the engagement fitting 69 and the engagement hole 70 face each other, and the engagement fitting 69 is hooked on the engagement hole 72. The fall of the car C can be prevented in advance. In addition, since there are two floor catches 60 and are supported at a position sandwiching the hot water outlet 21 of the tundish 2 in the extending direction of the rail R, both the tundish 2 and the tundish C are easily secured.

As described above, according to the tundish cars A, B, and C of each of the above embodiments, the tundish car is provided with the fall prevention means (outrigger jack 30, rail catch 50, floor catch 60). When stopping traveling to tilt 2, it is not necessary to accurately position the stop position. For this reason, it is not necessary to greatly reduce the speed when the tundish car is stopped, and time is not required for fine adjustment of the alignment, so that the operation efficiency is improved.
Also, if the fall prevention means (outrigger jack 30, rail catch 50, floor catch 60) is set to the operating position by the posture changing mechanism (hydraulic cylinders 31, 51, 61), the tundish 2 can be immediately tilted. If the tundish car will not tip over. Further, if the fall prevention means is set at the retracted position, the tundish car can immediately start moving, so that safety can be ensured and the operation efficiency is improved.

In each of the above-described embodiments, a pair of fall prevention means including an outrigger jack, a rail catch, and a floor catch constitutes a pair. However, in the present invention, the fall prevention means is not limited to two and may be three or more. If there are three units, the tundish 2 is divided into one unit and two units with the hot water outlet 21 of the tundish 2 sandwiched therebetween, or in the case of four units or six units, two units or three units tundish 2 The hot water outlet 21 is interposed therebetween.
Thus, when the fall prevention means is composed of a plurality of units, the load per unit is reduced, so that the individual fall prevention means can be miniaturized.

A Tundush Car B Tandush Car C Tandush Car 2 Tandush Car 10 Cart 12 Side Frame 14 Tilt Frame 16 Tilt Link 17 Tilt Cylinder 30 Outrigger Jack 31 Hydraulic Cylinder 38 Footboard 50 Rail Catch 51 Hydraulic Cylinder 58 Catch 60 Floor catch 61 Hydraulic cylinder 69 Engagement fitting 70 Engagement hole

Claims (6)

It is a tundish car that can move on a rail installed on the casting floor of a continuous casting facility and is equipped with a tundish that can be tilted,
A tundish car, wherein the tundish car is provided with a fall prevention means for preventing the tundish car from overturning when the tundish is tilted on the tundish car. 2. The tundish according to claim 1, wherein the fall prevention means has a posture changing mechanism that is in a retracted position when the tundish car moves and is in an operating position when the tundish car tilts. car. The tundish has a hot water outlet,
The tundish car according to claim 1 or 2, wherein the fall prevention means is installed at a position where a pair sandwiches the hot water outlet. The fall prevention means includes a posture changing mechanism composed of a hydraulic cylinder that expands and contracts toward the casting floor,
An outrigger jack comprising a support member that comes into contact with the casting floor when the hydraulic cylinder extends and separates when the hydraulic cylinder contracts;
4. The tundish car according to claim 1, wherein the outrigger jack is provided on a center of gravity movement side when the tundish in the tundish car tilts. The fall prevention means includes a posture changing mechanism composed of a hydraulic cylinder that expands and contracts toward the casting floor,
A rail catch composed of a rail engaging member that engages with the rail when the hydraulic cylinder extends and detaches when contracted;
4. The tundish car according to claim 1, wherein the rail catch is provided on a side opposite to a center of gravity movement side when the tundish in the tundish car tilts. The fall prevention means includes a posture changing mechanism composed of a hydraulic cylinder that expands and contracts toward the casting floor,
A floor catch composed of a floor engaging member that engages with an engaged portion formed on the casting floor when the hydraulic cylinder extends, and disengages when contracted;
4. The tundish car according to claim 1, wherein the floor catch is provided on a side opposite to the center of gravity movement side when the tundish in the tundish car tilts.

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