JPH0818115B2 - Ladle carrier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for, for example, in a steelmaking plant, for receiving a molten metal tapped from a refining means such as an electric furnace or a converter in a ladle and transporting it to a vertical continuous casting facility. The present invention relates to a ladle transfer device. y Prior Art In order to transport the molten metal from a refining means such as an electric furnace and a converter to a vertical continuous casting facility, it is desired to handle the ladle unattended. In order to bring the ladle containing the molten metal onto the tundish of the vertical continuous casting facility, it is necessary to raise the ladle by, for example, about 10 m. When such a ladle is lifted and lowered by a crane, the factory building is, for example, 25 m or more. Need height. The ladle that stores the molten metal is, for example, 250 t
However, since the overhead traveling crane requires a large capacity, the building cost is increased. It is technically possible to make such an overhead crane unmanned, but in the unlikely event of an unmanned operation, the molten metal handling, that is, the operation of connecting the ladle storing the molten metal to the lifting device of the crane, is unmanned. That is, it is difficult to automate.

A typical prior art is JP-A-55-4559.
9 are disclosed. In this prior art, a ladle from a steel mill is hoisted by a winch wire and swiveled around a vertical axis to bring it above the tundish. In such a prior art, a wire is used to hang a ladle, and therefore, it is unmanned from a safety point of view to hold a heavy ladle with a lifting tool provided on the wire to lift the ladle. It is difficult. Therefore, when such a prior art is used, it is difficult to completely unmanned the transportation of the ladle from the refining means to the tundish.

[0004]

It is an object of the present invention to unmanned the transportation of ladle from a refining means to a vertical continuous casting facility to save labor, and to eliminate a large-capacity overhead traveling crane to construct a factory. An object of the present invention is to provide a ladle carrying device capable of reducing costs.

[0005]

According to the present invention, the ladle is moved from a position where the molten metal is supplied to the ladle from the refining means to a ladle in a predetermined first direction which is inclined so as to rise as the position where the tundish is provided. A first carriage that carries and conveys a second carriage that carries and conveys the first carriage in a second direction that intersects the first direction in the middle of the movement route of the first carriage.
At the position close to the tundish on the moving path of the bogie and the first bogie, the ladle mounted on the first bogie is received to make an upward turn on the tundish or a ladle on the tundish to make a downward turn. It is a ladle carrying device including a swing tower mounted on a first carriage and returned.

[0006]

[0007]

[0008]

[0009]

According to the present invention, the moving path of the ladle or the like inclined so as to rise from the position where the molten metal from the refining means is supplied to the ladle to the position where the tundish such as vertical continuous casting equipment is provided. Is formed in a predetermined first direction, and a first carriage for mounting and transporting a ladle is provided in the first direction, and a first carriage that crosses the first direction is provided in the middle of the movement path of the first carriage. A second carriage that moves in two directions is provided, the first carriage is mounted and conveyed by the second carriage, and is mounted on the first carriage at a position near the tundish of the movement route of the first carriage. The ladle is received by a swing tower, turns up and turns to bring it above the ladle, and the ladle after pouring the molten metal into the tundish is turned by the swing tower and lowered, and is mounted on the first carriage. Returned Te, truck 1 is moved by the second carriage, thus ladle is transported.

[0010]

[0011]

[0012]

[0013]

1 is a longitudinal sectional view showing a part of the structure on which the present invention is based. The ladle 22c conveyed by the carriage 26 is raised by the ladle moving device M1 as indicated by reference numeral 22d, and the ladle 22d is moved.
Is raised by the swing tower ST1 as indicated by reference numeral 22a, swung 180 degrees about the vertical axis 18, and the tundish 2 of the vertical continuous casting facility CC1 is moved.
8, a nozzle 29 provided at the bottom of the ladle 22b arranged as shown by a reference numeral 22b immediately above 8 is opened by a sliding gate or the like so that the molten steel in the ladle 22b is ejected from the nozzle 29. The slab 7 is poured into the tundish 28 and is molded by the mold 30.
6 is obtained.

FIG. 2 is a simplified plan view of the entire refining and casting apparatus including the configuration shown in FIG. The molten steel refined in the two electric furnaces EFA, EFB passes through the rail 77 from the turntable device TTB1 and then the third turn in the rails 78, 79 provided with the second to fourth turntable devices TTB2, TTB3 and TTB4. It is led to the table device TTB3. The rail 80 is provided in association with the third turntable device TTB3 and can perform refining in the secondary refining device LF. Rails 81 to 83 are also connected to the second to fourth turntable devices TTB2 to TTB4, respectively, and at the first location 84, the ladle moving device M1 and the first swing tower ST1 are passed to the first vertical continuous casting facility CC1. Molten steel is supplied, and at the second place 85, similarly, the ladle moving device M2 and the second swing tower ST2 are used for the second operation.
Molten steel is supplied to the vertical continuous casting facility CC2. Rail 8
In the middle of 3, the preheating equipment 86 for preheating the ladle and the repair device 87 for repairing the tundish are provided. The rails 77 and 81 guide the carriage 26 in a predetermined direction (the direction in which the rails 77 and 81 extend, the vertical direction in FIG. 2 in this configuration). The rails 78 and 79 are in the middle of the rails 77 and 81 that form the movement route of the carriage 26,
For example, the carriage 26 can be guided in a direction intersecting the above direction at right angles (that is, a direction in which the rails 78 and 79 extend, the left-right direction in FIG. 2). Rails 88 and 89 are provided on the first turntable device TTB1, and the carriage 26
Are guided to the electric furnaces EFA and EFB for movement respectively.

FIG. 3 is a plan view of the first turntable device TTB1 and FIG. 4 is a first turntable device TTB1.
FIG. A circular base plate 90 can be pivoted by being angularly displaced about a vertical axis 91, and a rail 92 that can be connected to rails 77, 88, 89 on the base plate 90.
Is fixed. The wheels 44 of the carriage 26 are guided on these rails 77, 88, 89, 92. The trolley 26 is equipped with a drive source 93 such as a motor for driving the wheels 44 and is self-propelled. The ladles 22a, 22b, etc. may be collectively denoted by reference numeral 22. Wheels 94 on the base plate 90
Is provided and can travel along a circular rail 95. Thus, the carriage 26 on the base plate 90 has the vertical axis 91.
It can be angularly displaced around.

FIG. 5 shows the ladle 2 mounted on the carriage 26.
2 is shown. The bottom 96 of the ladle 22 shown in FIG.
The nozzle 9 is placed at a position displaced from the axis 97 of the ladle 22.
8 is provided, and the nozzle 98 can be opened and closed by a sliding gate driven by a hydraulic cylinder or the like. A pair of first support portions 43 is provided on both sides of the ladle 22. The lower surface 44 of the first support portion 43 is
It is supported on a horizontal upper surface of a cradle 46 provided upright on the carriage 26, and in this state, the axis 97 of the ladle 22 is vertical. Above the first support portion 43, second support portions 101, which are trunnion shafts, are also projectingly provided on both sides of the ladle 22.

FIG. 6 is a plan view showing the ladle moving device M1 and the swing tower ST1, FIG. 7 is a vertical sectional view of the ladle moving device M1 seen from the side, and FIG. 8 is a view showing the ladle moving device M1. It is the longitudinal cross-sectional view seen from the front. With reference to these drawings, the ladle moving device M1 is arranged between the carrying position 102 of the ladle 22c at which the carriage 26 stops and the swing tower ST1 that receives and turns the ladle at a position higher than that. The ladle moving device M1 includes a support 103 provided at a fixed position, a receiving member 104 that receives and supports the support portion 101 that is the trunnion shaft of the ladle 22, and a pair of link mechanisms 137. And a double-acting hydraulic cylinder 105 that is a drive unit for driving the. Link mechanism 137
Are provided on both sides of the ladle 22, respectively. Each link mechanism 137 has a pair of links 106 and 107 which are pin-coupled between the support body 103 and the receiving member 104 with a space vertically provided therebetween. The receiving member 104 receives the support portion 101 of the ladle 22c placed on the carriage 26 at the ladle transfer position 102 in a state indicated by an imaginary line 108, and ascends in the direction of an arrow 109 as indicated by a solid line. Move horizontally and swing tower ST
Hand over to 1. The links 106 and 107 are the support 103
To the receiving member 104 by pins 111 to 114, and the axes of these pins 111 to 114 are located at the respective vertex positions of the parallelogram in the vertical plane. The links 106 of the pair of link mechanisms 137 are fixed by the connecting members 115. A piston rod 117 of the hydraulic cylinder 105 is piston-connected to the link 106 by a pin 116. The cylinder 105 has a bracket 119 provided at a fixed position by a pin 118 which is a trunnion shaft.
It is supported so that it can be angularly displaced. When the cylinder 105 is extended, the receiving member 104 is at the upper limit position for transferring the ladle 22a to the swing tower ST1 as shown by the solid line, and when the cylinder 105 is contracted, the receiving member 104 is angularly displaced as shown by the phantom line 120. As indicated by reference numeral 108, the receiving member 104 is in a state of being able to receive the supporting portion 101 of the ladle 22c, and in this manner, the pin 116 that connects the piston rod 117 and the link 106.
Follows the trajectory indicated by reference numeral 121 when rising. Such a cylinder 105 is provided for each link mechanism 137.

FIG. 9 shows the receiving member 1 of the ladle moving device M1.
FIG. 10 is an enlarged side view of the vicinity of 04, and FIG. 10 is a view showing a state in which the support member 101 of the ladle 22 is supported by the receiving member 104. An actuator 12 such as a double-acting hydraulic cylinder is provided on one side of the receiving member 104.
2 is provided, and by this actuator 122, the retaining member 123 is provided with a notch 1 as shown by an arrow 124.
It projects above the supporting portion 101 which is fitted and supported by the support member 25. The retaining member 123 is inserted into a guide hole 126 formed in the receiving member 104, and for retaining, the imaginary line 12 is partially in the direction of the arrow 124 as described above.
It can project as shown at 7. The state in which the retaining member 123 is projected in this manner is shown in FIG. As a result, the support portion 101 is provided with the notch 12 of the receiving member 104.
The safety is secured without the risk of slipping from 5.
When the sliding gate that opens and closes the nozzle 98 of the ladle 22 remains closed and cannot be opened by receiving the support portion 101 which is a horizontal columnar trunnion shaft in the notch 125, the ladle 22 does not open. Bracket 12 fixed to the outer wall of
8 is connected to a wire 129 such as a crane, and the wire 129 is lifted to angularly displace the ladle 22 around the horizontal axis of the supporting portion 101 and around the arrow 130, whereby the molten steel in the ladle 22 is used as an emergency pan. It is possible to discharge.

FIG. 11 is a side view of the vicinity of the receiving member 104 having still another prerequisite structure, and FIG. 12 is a simplified horizontal sectional view thereof. A steadying member 131 is provided in a pair above the receiving member 104, and the steadying member 131 can be angularly displaced around a horizontal axis by a bracket 132. The steadying member 131 is a rotary unit such as a hydraulic motor. The actuator 133 can be displaced by 90 degrees. The rotation axis of the steady member 131 is perpendicular to the axes of the pins 111 to 114. When the support portion 101 of the ladle 22 is received and supported by the notch 125 of the receiving member 104, the steady rest member 131 is upright by the actuator 133 as shown in FIGS. 11 and 13. After the support portion 101 is fitted into the notch 125 of the receiving member 104 and is in a state of being received, the actuator 133 causes the steady rest member 131 to move.
The angle is displaced by 90 degrees as indicated by the arrow mark 3 of 3, and the state indicated by the imaginary line 135 is obtained. At this time, as shown in FIG. 12, the steady rest 131 comes close to the outer wall of the ladle 22, and thereby the ladle 22 is prevented from being angularly displaced around the horizontal axis of the supporting portion 101. The steady rest surface 136 of the steady rest 131 facing the ladle 22 is inclined or curved along the outer peripheral surface of the ladle 22, whereby undesired shaking of the ladle 22 can be suppressed as much as possible. . 11-
The configuration shown in FIG. 13 may be configured and implemented simultaneously with the configuration shown in connection with FIGS. 9 and 10 in association with the receiving member 104.

Referring again to FIGS. 1 and 6, the structure of the swing tower ST1 will be described. In the swing tower ST1, a swing tower main body 16 is supported by a swivel bearing 17 on a base 15 provided at a fixed position, and is freely rotatable around a vertical axis 18. A gear 19 is fixed to the lower portion of the swing tower body 16, and the gear 19
Is engaged with a gear 21 connected to an output shaft of a motor 20 provided at a fixed position and is rotationally driven.

The swing tower body 16 is provided with link mechanisms 51, 51a for supporting the ladles 22a, 22b. Reference numeral 2 is a general reference numeral 22a and 22b.
It may be indicated by 2. A receiving member 47 is provided for raising the ladle 22b raised by the ladle moving device M1 by the present swing tower ST1. The receiving member 47 is formed in a substantially L shape,
6, a receiving portion 48 that receives and supports the lower surface 44 of the support portion 43 on the outer side of the receiving base 46 of 6, and a connecting portion 49 that is continuous with the receiving portion 48 and extends upright on the swing tower body 16 side.
Have and. A projecting piece 50 is formed on the receiving portion 48 to prevent the lower surface 44 of the supporting portion 43 from shifting on the upper surface of the receiving portion 48. The receiving members 47 are provided on both sides of the ladle 22, and a pair of link mechanisms 51 are connected to the receiving members 47. The link mechanism 51 includes a pair of links 56 and 57 that are pin-coupled with each other by pins 52 to 55 that are vertically spaced from each other between the swing tower body 16 and the receiving member 47. The links 56 of each link mechanism 51 are connected to each other by a connecting member 58, and a piston rod 60 of a double-acting hydraulic cylinder 59 is connected to the connecting member 58 by a pin 61. The cylinder 59 is angularly displaceable on a bracket 71 fixed to the swing tower body 16 by a shaft 62 in a trunnion manner. A link mechanism 51a similar to the link mechanism 51 is attached to the swing tower body 16 about the axis 18.
The components are provided in the same manner with a shift of 0 degree, and the corresponding components are indicated by the same numbers with a subscript a. The axes of the pins 52 to 55 are located at the respective vertex positions of the parallelogram in the vertical plane.

FIG. 14 is a diagram showing a time schedule of the procedure for carrying the ladle 22 having the structure shown in FIGS. 1 to 13, and FIGS. 15 (1) to 15 (6) are shown in FIG. 2 described above. It is a figure which also shows the conveyance state of the ladle 22 with the simplified top view. A total of three carriages 26 are used in this configuration, which may be indicated by reference numerals 261, 262, 263, respectively. In the first step of FIG. 15 (1), the trolley 261 moves to one of the electric furnaces EFA and moves from time t1 to time t1.
2, the second carriage 262 has been moved to the ladle preheating yard 86 and the ladle tundish repair yard 87, and the carriage 262 is equipped with the ladle that has been repaired and preheated. Next second
In step 2, as shown in FIG. 15B, the first carriage 261 moves from the rail 77 to the turntable device TTB3.
Is guided to the rail 80 to move to the secondary refining device LF, and the secondary refining is performed from time t3 to t4. Second
The dolly 262 goes from the rail 83 to the other electric furnace EFB through the rail 83, the turntable device TTB4, the rail 79, the turntable device TTB3, the rail 77 and the turntable device TTB1 and then the other electric furnace EF.
It moves to B and is in the waiting state for steel receiving. Third trolley 263
The yard 86,87 for ladle preheating and repair
The ladle 22 is mounted on the carriage 263.

In the third step, as shown in FIG. 15C, the first carriage 261 moves to the ladle moving device M2 through the rails 80, 78 and 81 and the turntable devices TTB3 and TTB2, and the ladle 22 moves to the ladle. It is moved to the casting position by the moving device M2 and the second swing tower ST2, molten steel is injected from the ladle 22 into the tundish 28, and casting is performed at times t5 to t6. The second trolley 262 is waiting in the electric furnace EFB to receive steel, and the third trolley 263 is waiting in the yards 86, 87.

In the fourth step, as shown in FIG. 15 (4), the second trolley 262 is moved from the electric furnace EFB to the steel plate 2 after receiving the steel.
Move to the next refining furnace LF. The third trolley 263 is an electric furnace E.
Moves to FA and enters the steel receiving standby state. First trolley 261
Moves to the yard 86, 87 from time t6 to t7.

In the next fifth step, as shown in FIG. 15 (5), the second carriage 262 moves to the ladle moving device M1 after refining in the secondary refining furnace LF, and the ladle 22 moves to the ladle moving device. It moves to the casting position of the first vertical continuous casting facility CC1 via M1 and the first swing tower ST1 and injects molten steel. The first carriage 261 is loaded with the ladle 22 in the yards 86 and 87, and is from time t7 to t.
8 is in a standby state. The third trolley 263 is waiting in the electric furnace EFA to receive steel.

In the next sixth step, as shown in FIG. 15 (6), after the third truck 263 has received the steel in the electric furnace EFA,
Move to the secondary refining furnace LF. The first truck 261 stands by for electric steel reception in the electric furnace EFB, and receives steel at times t9 to t10. The second trolley 262, after the molten steel injection, the yard 86,8
Move to 7. Such an operation is performed by each of the trucks 261 to 263.
The operation is continuously performed by automatically moving with a time shift.

[0027]

[0028]

[0029]

[0030]

FIG. 16 is a sectional view of an embodiment of the present invention, and FIG. 17 is a simplified plan view of the embodiment shown in FIG. This embodiment is similar to the above-mentioned configuration, and corresponding parts bear the same reference numerals. It should be noted that in this embodiment the rails 88, 89; 81 for the carriage 26 carrying the ladle 22 are tundish from positions 148, 149 supplying molten metal to the ladle 22 from the electric furnaces EFA, EFB. The rails 88, 89; 81 with respect to this horizontal plane are inclined so as to rise to the position where the position 28 is provided, and thus the position 150 where the carriage 26 is stopped because the ladle 22 is received by the swing tower ST1. The angle θ1 may be, for example, 5.5 °. Rails 88 and 89 and rail 8
For example, 90 ° in the first direction (left-right direction in FIGS. 16 and 17) in which the rails 88, 89;
In the second direction (perpendicular to the paper surface of FIG. 16, FIG. 17).
A rail 78 extends in the vertical direction of the carriage 138, and the carriage 138 can travel by itself along the rail 78. For example, the ladle 22 on the trolley 26 received from one electric furnace EFA
Is moved by the carriage 26 along the rail 88,
Transfer to the rail 139 on the dolly 138, then move to the rail 80 by the dolly 138, smelt in the secondary refining furnace LF, and then the dolly 26 on the dolly 138 from the secondary refining furnace LF. Transfer, and then the rail 81 guides the carriage 26 on the carriage 138.
Move to position 150, shown at 6. This position 15
At 0, the ladle 22 on the carriage 26 is the swing tower S.
Raised by T1 and turned 180 °, reference numeral 22
Molten steel is injected directly above the tundish 28 as indicated by b. On the way along the rail 78, the yards 86, 8 for preheating and repairing the ladle
7 is provided, and this configuration and other configurations are as shown in FIG.
And is similar to the above-described configuration. A plurality of carriages 26, 138, for example, two carriages may be provided to improve the efficiency of the driving operation.

[0032]

[0033]

According to the present invention, the movement path of the first carriage on which the ladle is mounted in the first direction is inclined so as to rise from the refining means to the position where the tundish is provided. , A second carriage for carrying and transporting the first carriage is provided in the middle of this movement path, and a swing tower is provided at a position near the tundish of the movement path of the first carriage and the first carriage is mounted on the first carriage. The above ladle can be brought above the tundish, or the ladle above the tundish can be returned to the first bogie. With such a configuration, labor saving can be achieved and the factory construction cost can be reduced. Can be planned.

[0034]

[0035]

[0036]

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a part of a structure on which the present invention is based.

FIG. 2 is a simplified overall plan view of the entire configuration shown in FIG.

FIG. 3 is a plan view of a turntable device TTB1.

FIG. 4 is a sectional view of a turntable device TTB1.

5 is a cross-sectional view showing a state in which a ladle 22 is mounted on a carriage 26. FIG.

FIG. 6 is a ladle moving device M1 and a swing tower ST1.
It is a top view which shows and.

FIG. 7 is a vertical cross-sectional view showing a configuration of a ladle moving device M1, viewed from a side.

FIG. 8 is a sectional view of the ladle moving device M1 seen from the front.

9 is a side view showing a part of the receiving member 104 by cutting away. FIG.

FIG. 10 is a side view showing a state in which the ladle 22 is supported by the receiving member 104.

FIG. 11 is a side view showing a state in which the ladle 104 is provided with an anti-sway member 131.

FIG. 12 is a simplified plan view showing a state where the ladle 22 is shake-stopped by a shake stop member 131.

FIG. 13 is a front view showing the shake prevention member 131 and its vicinity.

FIG. 14 is a time schedule diagram showing the operation of the ladle having the configuration shown in FIGS. 1 to 13;

FIG. 15 is a dolly 261 having the configuration shown in FIGS. 1 to 14;
FIG. 26 is a simplified plan view showing a movement situation of 263.

FIG. 16 is a side sectional view of an embodiment of the present invention.

FIG. 17 is a plan view of a portion of the embodiment shown in FIG.

FIG. 18 is a simplified plan view showing the whole of the embodiment shown in FIGS. 16 and 17;

[Explanation of symbols]

 15 Base 16 Swing Tower Main Body 22, 22a-22d Ladle 26, 261-263, 138, 152 Truck 51, 51a Link Mechanism 59, 59a Double-acting Hydraulic Cylinder 104 Receiving Member 105 Double-acting Hydraulic Cylinder 106, 107 Link 123 Locking Member 122, 133 Actuator 131 Shake prevention member EFA, EFB Electric furnace M1, M2 Ladle moving device ST1, ST2 Swing tower TTB1-TTB4 Turntable device

Continuation of the front page (56) References JP-A-54-120234 (JP, A) JP-A-54-106034 (JP, A) Actually developed JP-A-49-122125 (JP, U)

Claims (1)

[Claims] 1. A first ladle for carrying a ladle in a predetermined first direction that is inclined so as to rise from the position where the molten metal is supplied to the ladle from the refining means to the position where the tundish is provided. 1 carriage and the 2nd crossing in the 1st direction in the middle of the movement route of the 1st carriage
A second carriage that carries and transports the first carriage in a direction, and a position closer to the tundish on the moving route of the first carriage, receives the ladle mounted on the first carriage, and ascends onto the tundish. A ladle transporting device, comprising: a swing tower that revolves or descends a ladle on a tundish, and mounts the ladle on the first carriage and returns the ladle.