KR200327700Y1 - Apparatus for moving freely and drawing out of molten steel ladle car - Google Patents

Abstract

The present invention relates to a flow and withdrawal device of the water cart, the left and right fixed frame (11) (12) and installed on both front sides of the water cart (1); Elevating hydraulic cylinders 13 and 14 installed inside the left and right fixing frames 11 and 12; Left and right wheel frames 17 and 18 provided at lower ends of the lifting hydraulic cylinder rods 13a and 14a; Left and right driving wheels 15 and 16 installed in the left and right wheel frames 17 and 18; A drive shaft 30 having both ends mounted on shafts of the left and right driving wheels 15 and 16; A hydraulic motor 32 connected to the center of the drive shaft 30 by a chain 31; A hydraulic pressure supply source 35 for supplying hydraulic pressure to the hydraulic motor 32 and the lifting hydraulic cylinders 13 and 14; And upper and lower limit switches 36 and 37 installed on the left and right fixing frames 11 and 12 to sense positions of the lifting hydraulic cylinder rods 13a and 14a. The right side fixed frames 11 and 12 are provided with both ends in contact with the left and right fixed frames, and the ball-type limit switches 38 and 39 for detecting left and right balance of the water cart 1, and the left and right fixed sides. The inclination adjustment hydraulic cylinders 41 and 42 installed at the front of the frame and operated by the hydraulic supply source 35 and the drive wheels 45 installed at the ends of the inclination adjustment hydraulic cylinder rods 41a and 42a. (46) is further provided to allow the water cart to flow in the forward and backward directions, and to overcome the obstacles due to molten steel and slag fused to the rail when the water cart is pulled out, so that the water cart can be easily withdrawn.

Description

Flow and withdrawal device for the tuft cart {APPARATUS FOR MOVING FREELY AND DRAWING OUT OF MOLTEN STEEL LADLE CAR}

The present invention relates to a converter-carrying bogie, and more specifically, to allow the steel-carrying cart to flow forward and backward in order to smoothly mix molten steel and subsidiary materials pulled out from the converter, and also to melt molten steel to the rail when the cart is pulled out. And a flow and withdrawal device for a bogie that overcomes obstacles due to slag to allow for withdrawal (movement).

In general, the converter of the steelmaking process for refining molten iron into molten steel is carried out by charging the scrap iron and molten iron into the converter using a crane and then carrying out the drilling work. to be.

In this way, when the molten steel is pulled out from the converter, the raw materials such as charcoal and quicklime are added into the molten steel ladle so that the operator operating the steel converter to check the ladle of the steel cart to smoothly mix and dilute the molten steel and the raw materials. While moving back and forth about 50 to 70 times.

However, in the related art, the driving motor of the water cart is of a winding type, and a driving thruster brake is installed, so that molten steel flow as much as desired in operation is not generated.

In addition, there is a problem that the life of the device is shortened by repeatedly impacting the electric device and the mechanical driving device of the water cart by the forward and reverse operation according to the forward, backward.

In addition, excessively sloped in the converter (excessive explosion of CO gas among the slag in the converter) is generated, a large amount of molten slag is fused to the rail of the tank bogie, or after the completion of the tapping and discharged with the converter at the beginning and completion point There is a problem that the molten steel and slag is fused to the rail to act as an obstacle when drawing out the water cart.

As molten steel component leaked out of the converter is leaked to the outside at high temperature (1645 ℃), it solidifies immediately, so it is difficult to separate it from the rail, and the molten steel component fused for a long time must be separated from the rail by the oxygen cutting method. There is a problem that the efficiency is lowered and a safety accident occurs.

The object of the present invention devised in view of such a problem is to provide a flow and withdrawal device of the water cart so that it is suitable to flow the water cart so as to smoothly mix the sub-material injected into the molten steel to be discharged from the converter.

Another object of the present invention is to provide a flow and withdrawal device of the water cart to overcome the obstacles caused by molten steel and slag fused to the rail to facilitate the withdrawal (movement) of the water cart.

1 is a side view of a state in which molten steel of the converter is injected into the water cart according to the present invention.

Figure 2 is a front view of the water cart according to the present invention.

Figure 3 is a partially cutaway side view showing the configuration of the front side of the tugbo according to the present invention.

Figure 4 is a block diagram of the water flow cart means according to the present invention.

5 is an exploded perspective view of a bearing housing according to the present invention;

Figure 6 is a front view of the hydraulic cylinder of the balance balance means according to the present invention.

<Description of Symbols for Main Parts of Drawings>

One ; Course balance 1a, 1b; Driving wheel of the cart

2 ; Molten steel ladle 3; rail

4 ; Converter 11,12; Left and Right Fixed Frame

13,14; Lifting hydraulic cylinders 13a and 14a; Rod of lifting hydraulic cylinder

15,16; Left and right driving wheels 17,18; Left and Right Wheel Frames

20; Bearing housing 21; housing

22,23; Bearing 24,25; cap

30; Drive shaft 31; chain

32; Hydraulic motors 33,34; Gear coupling

35; Hydraulic drives 36,37; High and low limit switch

38,39; Ball type limit switch 40; ball

41,42; Hydraulic cylinders for tilt adjustment 41a, 42a; Rod of tilt adjusting hydraulic cylinder

43,44; Internal and external heat guide 45,46; Driving wheel

The present invention for achieving the above object is the left, right fixed frame which is installed on both sides of the front of the water cart; An elevator hydraulic cylinder installed inside the left and right fixing frames; Left and right wheel frames provided at a lower end of the lifting hydraulic cylinder rod; Left and right driving wheels installed in the left and right wheel frames; A driving shaft having both ends mounted on shafts of the left and right driving wheels; A hydraulic motor connected to the center of the drive shaft by a chain; A hydraulic pressure supply source for supplying hydraulic pressure to the hydraulic motor and the lifting hydraulic cylinder side; And an upper and a lower limit switch installed at the left and right fixed frames to sense a position of the lifting hydraulic cylinder rod.

The left and right fixed frames are provided with both ends in contact with the left and right fixed frames, and ball-type limit switches for detecting the left and right balance of the water cart, and are installed in front of the left and right fixed frames and operated by the hydraulic supply source. It is preferable that the inclination adjustment hydraulic cylinder and a driving wheel installed at the end of the inclination adjustment hydraulic cylinder rod is further provided.

Hereinafter, preferred embodiments of the present invention as described above will be described in more detail based on the accompanying drawings.

1 is a side view of a state in which molten steel of a converter is injected into the tug-gap according to the present invention, FIG. 2 is a front view of the tug-gauge according to the present invention, and FIG. 3 is a configuration of the front side of the tug-gauge according to the present invention. Figure 4 is a partial cutaway side view showing, Figure 4 is a schematic view of the water cart flow means according to the present invention, Figure 5 is an exploded perspective view of the bearing housing according to the present invention, Figure 6 is a water balance balance maintenance means of the present invention Front view of the hydraulic cylinder.

As shown in FIG. 1, a water cart flow means for flowing the molten steel ladle 2 seated on the water cart on the front of the water cart 1, and the water cart at the time of withdrawal of the water cart is not inclined to one side. It is provided with balance balancing means for the balance of the course. 3 is a rail and 4 represents a converter.

As shown in Figures 2 to 4, the water cart balance means according to the present invention, the left and right fixing frames 11, 12 are provided on both sides on the front surface of the water cart 1, and left and right fixed The lifting hydraulic cylinders 13 and 14 are respectively provided in the frames 11 and 12, and the driving wheels 15 and 16 are disposed at the lower ends of the rods 13a and 14a of the lifting hydraulic cylinders. Left and right wheel frames 17 and 18 are provided. The left and right driving wheels 15 and 16 are formed with uneven parts in two rows on the outer circumferential surface.

A lower portion of the left and right fixed frames 11 and 12 is provided with a bearing housing 20 for guiding the lifting and lowering movement of the lifting hydraulic cylinder rods 13a and 14a, as shown in FIG. . In the bearing housing 20, cylindrical bearings 22 and 23 are provided at the upper and lower sides of the housing 21, and caps 24 and 25 are covered at the upper and lower end openings.

In addition, both ends of the drive shaft 30 are axially fixed to the left and right drive wheels 15 and 16 provided on the left and right wheel frames 17 and 18, and the left and right wheel frames are rotated by the rotation of the drive shaft 30. , The right driving wheels 15 and 16 are configured to rotate together, and the center of the drive shaft 30 is connected to the hydraulic motor 32 by a chain 31.

The drive shaft 30 is connected to the left and right gear couplings 33 and 34, respectively, and the hydraulic motor 32 is connected to receive the hydraulic pressure by the hydraulic drive source 35, as shown in FIG. It is provided, and it is connected so that the lifting hydraulic cylinders 13 and 14 by the hydraulic drive source 35 may operate.

In addition, the left and right fixed frames 11 and 12 are provided with upper and lower limit switches 36 and 37 for detecting positions of the lifting hydraulic cylinder rods 13a and 14a, respectively.

In addition, the left and right fixed frames 11 and 12 are provided with ball type limit switches 38 and 39 so that both ends thereof are supported, and a ball 40 driving the limit switches 38 and 39 in the center thereof is provided. It is provided.

On the other hand, as shown in Fig. 2, the hydraulic balance cylinders 41 and 42 for inclination adjustment are provided in front of the left and right fixed frames 11 and 12 as the water balance balance means. In addition, as shown in Figure 7, the slope of the hydraulic cylinder rod (41a) (42a) for adjusting the slope is provided with heat radiation guides (43) (44) in duplicate, the drive of the end of the rod (41a) (42a) Wheels 45 and 46 are provided.

The operation of the water cart flow and takeout device according to the present invention configured as described above will be described.

When the molten steel ladle (2) is seated on the stand of the water tank (1) to move to the converter starting position and stops, and the molten steel is removed from the converter after the converter drilling work is completed by carrying out the converter drilling work, the present invention The rods 13a and 14a of the lifting hydraulic cylinder are pulled out to lower the left and right wheel frames 17 and 18. At this time, the rods 13a and 14a of the hydraulic cylinder are drawn out to a height detected by the lower limit switch 37, and the rods 13a and 14a are automatically drawn out when the lower limit limit switch 37 is reached. The operation of the lifting hydraulic cylinders 13 and 14 is stopped.

As described above, in the state where the rods 13a and 14a of the hydraulic cylinder are drawn out, the rear driving wheel 1b of the water cart 1 touches the rail and the front driving wheel 1a is lifted from the rail 3. As the hydraulic motor 32 is repeatedly driven in the forward and reverse directions in this state, the forward and reverse rotational force transmitted by the chain 31 rotates the drive shaft 30 in the forward and reverse directions. Therefore, the left and right driving wheels 15 and 16 rotated interlocked by the drive shaft 30 are rotated forward and backward, and thus the tugboat 1 repeats the forward and reverse motions. Molten steel and subsidiary materials received in the molten steel ladle (2) is mixed. At this time, the hydraulic motor 32 can be operated as much as the set value of the timer in accordance with the driver's judgment (going time, the amount of charcoal and auxiliary material input).

When the tapping is completed from the converter 4 to the molten steel ladle 2, the hydraulic motor 32 is stopped to stop the forward and reverse rotation of the left and right driving wheels 15 and 16, and then the rod of the lifting hydraulic cylinder. (13a) 14a is raised, and the front drive wheel 1a of the water cart 1 is seated on the rail 3.

Later, when the withdrawal (movement) operation of the water carts 1 is difficult to withdraw the water carts 1 due to the obstacles caused by the molten steel or slag leaking and fusion to the rails during the tapping process of the converter, which is the previous process. The rods 13a and 14a of the lifting hydraulic cylinder are lowered in a state where the upper and lower limit switches 36 and 37 provided at the left and right fixing frames 11 and 12 of (1) are adjusted to their maximum lengths. The hydraulic carriage 32 is driven while the front driving wheel 1a of the tugboat 1 is floated, and the tug boil 1 is molten by the rotational driving force of the left and right driving wheels 15 and 16. Move to the position where (2) is hoisted.

As such, when the water cart 1 is inclined to one side in the course of passing the obstacle due to the molten steel or slag fused to the rail 3 during the water cart movement, the water cart 1 is inclined. By operating the limit switch 39 or 38 located on the inclined side by moving the ball 40 of the ball type limit switches 38 and 39, the hydraulic cylinder 41 or 42 for tilt adjustment is operated to load the rod ( 41a) or 42a is drawn out, because the driving wheel 45 or 46 provided at the lower end of the drawn rod is rotated while being supported on the upper surface of the rail 3 in the inclined direction. The balance is not tilted completely. When the water cart 1 maintains the horizontal balance, the ball 40 of the ball limit switch is located at the center, so the limit switch is automatically turned off so that the rod 41a or 42a is drawn into the hydraulic cylinder. As a result, the drive wheel 45 or 46 is returned to its original position.

As described above, the present invention water cart flow and withdrawal device has the effect of reducing the occurrence of defects in the molten steel by preventing the segregation is generated by smooth mixing with molten steel, such as the additives such as carburizing agent and quicklime during the tapping of the converter. .

In addition, it is possible to withdraw (move) the carts by smoothly overcoming obstacles in the direction of the carts due to the fusion of slag and molten steel that flows out during the initial and final tapping after the completion of the refining work or the completion of the converter. In addition, the facility utilization rate is significantly improved, and the molten steel that is tapped is prevented from being deteriorated due to long-term standby.

Claims (2)

Left and right fixed frames 11 and 12 installed on both sides of the front of the water cart 1; Elevating hydraulic cylinders 13 and 14 installed inside the left and right fixing frames 11 and 12; Left and right wheel frames 17 and 18 provided at lower ends of the lifting hydraulic cylinder rods 13a and 14a; Left and right driving wheels 15 and 16 installed in the left and right wheel frames 17 and 18; A drive shaft 30 having both ends mounted on shafts of the left and right driving wheels 15 and 16; A hydraulic motor 32 connected to the center of the drive shaft 30 by a chain 31; A hydraulic pressure supply source 35 for supplying hydraulic pressure to the hydraulic motor 32 and the lifting hydraulic cylinders 13 and 14; And upper and lower limit switches 36 and 37 installed on the left and right fixing frames 11 and 12 to detect the position of the lifting hydraulic cylinder rods 13a and 14a. Flow and withdrawal device of the water cart characterized in that. The method of claim 1, The left and right fixed frames 11 and 12 are provided with both ends in contact with the left and right fixed frames, and the ball-type limit switches 38 and 39 detect the left and right balance of the water cart 1, and the left and right sides. Drive wheels installed in front of the right fixed frame and installed at the end of the inclination adjustment hydraulic cylinders 41 and 42 operated by the hydraulic supply source 35 and the inclination adjustment hydraulic cylinder rods 41a and 42a. 45) (46) The flow and withdrawal device of the water cart characterized in that it is further provided.