KR101375728B1 - Guide apparatus of approach roll table - Google Patents

Abstract

The present invention is located between the approach roll and the roll provided on the approach roll table, the roll portion having at least one guide roll; A roll guide part coupled to the roll part and guiding horizontal and downward non-horizontal switching of the roll part such that the roll part is in a horizontal or downward non-horizontal state with the approach roll; A base part supporting the roll guide part; And a control unit for controlling the roll guide unit according to the continuous casting operation. Approach roll table guide device as described above can induce the draw without the deflection of the dummy bar head and the roll checker at the beginning of the continuous casting operation, and the heat deformation and scratch resistance of the cast without acting as an obstacle during the continuous casting operation Draw can be safely induced without binding.

Description

Approach roll table guide apparatus {GUIDE APPARATUS OF APPROACH ROLL TABLE}

The present invention relates to an approach roll table, and more particularly, to an approach roll table guide device installed on the approach roll table to guide the drawing of the cast pieces without refraction of the dummy bar head and the roll checker. .

Generally, as shown in FIG. 1, the approach roll table 10 is provided with three to four guides 5 at regular intervals in a space between the approach rolls 1 and the rolls 1 arranged at regular intervals. . The guide 5 is disposed at a right angle with the approach roll 1 and is located at a predetermined depth below the surface of the approach roll 1, and directly radiates the radiant heat of the cast pieces 6 (see FIG. 3) drawn during the continuous casting operation. Receive as

In addition, as shown in Figure 2, the guide 5 supplies the coolant to the inside to prevent overheating, by connecting the respective guides 5 via the hose (5a) in a centralized manner to supply the coolant On the other hand, some of the cooling water is discharged through the hole 5b drilled in the upper part of the guide 5 and the other cooling water is injected and discharged into the next guide 5 connected through the hose 5a.

In addition, as shown in FIG. 3, the dummy bar body 9 in which the dummy bar head 8 and the roll checker (not shown) are coupled to the approach roll table 10 is drawn to the rotational force of the pinch roll (not shown). The hook 2 is caught by the hook 2 waiting to be seated on the base and pushed away by a predetermined distance to block the light of the sensor 4. In addition, when the dummy bar head 8 and the roll checker passes through the player (not shown) by a certain height, the surface of the guide 5 of the approach roll table 10 is slid by the pull of the hook 2 that rises. It moves and hangs on the hook 2 which rises and falls while passing through the surface of the approach roll 1, and it raises by a predetermined height. At this time, the guide 5 of the approach roll table 10 prevents the deflection due to the deflection of the dummy bar head 8 and the roll checker, and prevents the measurement data loss due to the impact. In addition, in order to secure the processing of the short cast (6) generated during the final casting operation to perform a supporter function that supports between the approach roll (1) and the roll (1).

However, although the guide 5 of the approach roll table 10 as described above is necessary at the beginning of the continuous casting operation and the roll checking operation, it becomes unnecessary during the continuous casting operation. Therefore, as illustrated in FIG. 4, the guide 5 generates a scratching defect while being in contact with the bottom surface of the drawn slab 6 due to heat deformation in the up and down directions due to high temperature slab 6 radiant heat. The problem arises that the drawing of the cast piece 6 is impossible.

The present invention has been made to solve the above problems, to provide an approach roll guide device that can induce drawing without the deflection of the dummy bar head and the roll checker at the beginning of the continuous casting operation.

In addition, the present invention is to provide an approach roll guide device that can safely induce drawing without the heat deformation and scratch-resistant coupling of the cast without acting as an obstacle during continuous casting operation.

The present invention is located between the approach roll and the roll provided on the approach roll table, the roll portion having at least one guide roll; A roll guide part coupled to the roll part and guiding horizontal and downward non-horizontal switching of the roll part such that the roll part is in a horizontal or downward non-horizontal state with the approach roll; A base part supporting the roll guide part; And a control unit for controlling the roll guide unit according to the continuous casting operation.

The control unit may control the roll guide unit to fill the space between the approach roll and the roll in a horizontal state by rotating the roll unit upward in the initial casting operation and during the roll checking operation. The roll table guide apparatus is started.

The control unit may control the roll guide unit so that the roll unit is in a downward non-horizontal state below the space between the approach roll and the roll by rotating the roll unit downward during continuous casting operation. Initiate.

In addition, the roll guide portion, the holder is rotatably installed up and down the base portion; A plate mounted to the upper and lower portions of the holder and to which the roll unit is mounted; A first cylinder installed at the base part and connected to the holder to drive vertical rotation of the holder; And a second cylinder installed in the holder and connected to the plate, the second cylinder driving the lifting and lowering of the plate.

In addition, the present invention is installed on the base portion, the approach roll table guide apparatus further comprises a sensor unit for contacting the holder when the holder is rotated up and down to detect the horizontal and downward non-horizontal state of the roll unit; It starts.

In addition, the sensor unit, the first sensor is installed on the side of the groove formed in the base portion, the first sensor for making contact when the holder is rotated upward to detect the horizontal state of the roll; And a second sensor installed on a lower surface of the groove formed in the base part and contacting the holder when the holder rotates downward to detect a downward non-horizontal state of the roll part. do.

The present invention further provides an approach roll table guide device which is installed in the roll guide part and further includes a cooling part which cools the roll part by spraying cooling water on the surface of the roll part.

The cooling unit may further include: a cooling water jacket coupled to the plate; And an injection nozzle connected to the cooling water jacket and spraying the cooling water on the surface of the roll part.

The approach roll table guide device according to the present invention has the following effects.

(1) The present invention can prevent the data loss due to impact by inducing the draw so that the refraction of the dummy bar head and the roll checker does not occur by rising and rising at a predetermined angle during the continuous casting operation and roll checking operation.

(2) The present invention, while the continuous casting operation is rotated downward at a certain angle and does not act as an obstacle while the end of the casting is drawn through the playing machine ascending upwards at a certain angle to support the lower surface of the cast, short cast and normal cast Can be safely handled.

1 is a perspective view schematically showing a general approach roll table.
2 is a perspective view showing a guide and a coolant hose provided in the approach roll table.
3 is a view illustrating an operating state of the approach roll table when the dummy bar is drawn.
4 is a diagram illustrating a guide deformation state by horse slab bending due to overcooling and high temperature slab radiant heat.
5 is a perspective view of the combination of the approach roll table guide device according to a preferred embodiment of the present invention.
6 is an exploded perspective view of the approach roll table guide device according to the present invention.
It is a perspective view which shows the state which attached the approach roll table guide apparatus which concerns on this invention to the approach roll table.
FIG. 8 is a view illustrating an operating state of the approach roll table guide device when the dummy bar and the horse slab are drawn out.
9 is a view showing an operating state of the approach roll table guide device when the cast steel is drawn.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

5 and 6 are exploded perspective and exploded perspective view of the approach roll table guide device according to a preferred embodiment of the present invention.

5 and 6, the approach roll table guide device 100 according to a preferred embodiment of the present invention is a roll portion 110, roll guide portion 120, the base portion 130, the sensor portion 140 ), The cooling unit 150 and the control unit 160.

The roll unit 110 is positioned between the approach roll 1 and the roll 1 provided in the approach roll table 10 (refer to FIG. 7), and includes at least one or more guide rolls 111.

The roll guide part 120 is coupled to the roll part 110 and guides the horizontal and downward non-horizontal switching of the roll part 110 such that the roll part 110 is in a horizontal or downward non-horizontal state with the approach roll 1.

The roll guide part 120 includes a holder 121, a plate 123, a first cylinder 125, and a second cylinder 127.

Both ends of the holder 121 are seated and fastened to the base part 130 by the bearings 122 and are rotatable vertically. In addition, the holder 121 is formed to be horizontally curved so that the center of gravity is located at the bottom and the second cylinder 127 and the elevating induction pipe 121a at the top.

The plate 123 is installed to be elevated by the second cylinder 127 on the upper part of the holder 121, and the lifting shaft part 123a is inserted into the lowering guide pipe 121a of the holder 121 on both lower sides thereof. do. In addition, the plate 123 is formed of a 'b' shape so that the plurality of reducers 113 are connected to each of the guide roll 111 is connected to the upper horizontal surface and the coolant jacket 151 is coupled to one vertical surface ' It is made in a shape. In the present exemplary embodiment, a configuration of forming the plate 123 in a '-' shape is illustrated, but is not limited thereto and may have various shapes.

The first cylinder 125 is installed in the base unit 130 and is connected to the rod base 121b that is refracted to one side of the holder 121, and drives up and down rotation of the holder 121.

The second cylinder 127 is installed in the holder 121, is connected to the plate 123, and drives the lifting of the plate 123.

The first and second cylinders 125 and 127 may apply cylinders using liquids and gases as power sources.

The base part 130 is a support structure for supporting the roll guide part 120. In the present embodiment, the configuration of forming the base portion 130 in a symmetrical shape is illustrated, but the present invention is not limited thereto, and the base portion 130 may be formed in an asymmetrical shape. In addition, the base portion 130 has a shape of a groove 130a forming a plurality of jaws, the first sensor 141 and the second on the side (vertical surface) and the lower surface (horizontal surface) of the jaw predetermined portion of the groove 130a. The sensor 142 is provided.

The sensor unit 140 is installed in the base unit 130 and is in contact with the holder 121 when the holder 121 is rotated up and down to detect horizontal and downward non-horizontal states of the roll unit 110.

The sensor unit 140 includes a first sensor 141 and a second sensor 142.

The first sensor 141 is installed on the side (vertical surface) of the groove (130a) formed in the base portion 130, the sensor to detect the horizontal state of the roll unit 110 is made when the holder 121 is rotated upward to be.

The second sensor 142 is installed on the lower surface (horizontal surface) of the groove 130a formed in the base portion 130, and the contact is made when the holder 121 rotates downward to detect the downward non-horizontal state of the roll 110. It is a sensor.

The cooling unit 150 is installed in the roll guide unit 120 and cools the roll unit 110 by spraying cooling water on the surface of the roll unit 110.

The cooling unit 150 includes a coolant jacket 151 and a spray nozzle 153.

The coolant jacket 151 is coupled to the vertical surface of the plate 123.

The spray nozzles 153 are positioned below the roll unit 110, and are provided in a plurality in a horizontal state while maintaining a constant interval in the coolant jacket 151. In addition, the injection nozzle 153 is provided with each nozzle injection port toward the lower surface of the roll portion 110 to spray the coolant to the surface of the roll portion (110). Cooling water supplied to the injection nozzle 153 is a separate supply, each constitutes a medium.

The control unit 160 controls the roll guide unit 120 according to the continuous casting operation, and comprises a control program required for the control operation of the guide device 100 and an operation panel that can be easily operated during manual operation. In more detail, the control unit 160 rotates the roll unit 110 upwardly at the beginning of the continuous casting operation and during the roll checking operation to fill the space between the approach roll 1 and the roll 1 and the roll guide unit 120. To control. In addition, the controller 160 rotates the roll unit 110 downward during the continuous casting operation to control the roll guide unit 120 so that the roll unit 110 is in a downward non-horizontal state below the space between the approach roll and the roll.

It is a perspective view which shows the state which attached the guide apparatus of this invention to the approach roll table.

As shown in FIG. 7, the approach roll table guide device 100 of the present invention is mounted between the plurality of approach rolls 1 and the rolls 1 provided in the approach roll table 10. In addition, the guide device 100 is protruded at an angle at the beginning of the continuous casting operation and during the roll checking operation so that the deflection of the dummy bar head and the roll checker does not occur between the approach roll 1 and the roll 1. Prevents data loss due to shock by inducing In addition, the guide device 100 is rotated downward at a certain angle during the continuous casting operation, and when the end casting is drawn through the machine without an obstacle to raise the protrusion at a certain angle to support the lower surface of the drawing cast slab and Safely handle normal cast iron.

An operation state of the approach roll table guide device of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

8 is an operational state diagram of the approach roll table guide device when the dummy bar and the horse slab is drawn, Figure 9 is an operational state diagram of the approach roll table guide device when the cast bar is drawn.

Approach roll table guide apparatus 100 of the present invention is in the non-horizontal state downward in the space between the approach roll and the roll during the non-casting operation.

As shown in FIG. 8, when the continuous casting operation is started and the tail portion of the dummy bar body 9 passes through the player (not shown), the roll part 110 of the guide device 100 pivots upward to approach the roll 1. By filling the space between the roll and 1, the operation sequence is as follows.

When driving the first cylinder 125 and pulling the expanded rod, the holder 121 rotates upward and touches the contact point of the first sensor 141 to stop the roll unit 110 of the guide device in a horizontal state to approach the roll. Filling the space between the (1) and the roll (1), the cooling water is supplied to the cooling water jacket 151, the cooling water is injected to the roll 110 through the injection hole of the injection nozzle 153 to guide the rolls 111 Cool.

As shown in FIG. 9, the drawn dummy bar body 9 passes through the approach roll table guide device 100 and is caught and hooked up by the hook 2 (see FIG. 3) so that the dummy bar head 8 at the slab 6 is lifted. When the) is separated and rises a certain height, when the first cylinder 125 is driven to expand the contracted rod, the holder 121 rotates downward and the contact of the second sensor 142 touches the roll 110. Return to the non-horizontal state. At this time, the amount of cooling water sprayed on the roll unit 110 is sprayed with a different amount than when the roll unit 110 is raised and projected, the control of the water supply amount is controlled to the opening degree of the solenoid valve (not shown). In addition, a predetermined amount of coolant is continuously supplied to the coolant jacket 151, and the coolant is sprayed through the spray nozzle 153 to cool the surface of the roll unit 110 to radiate heat of the cast steel 6 that is drawn to the roll unit 110. This will prevent overheating.

The above operation is automatically performed according to the order stored in the program, and if an abnormality such as an error occurs during operation, the operator performs an additional function so that the operator can easily check.

In addition, when the cast piece 6 passes through the player and the drawing is completed, the roll part 110 of the guide device 100 embedded as described above contracts the inflated rod by the driving of the first cylinder 125 and the holder. One side of the 121 touches the contact point of the first sensor 141 provided on the side surface of the groove 130a of the base 130, and the roll unit 110 protrudes in a horizontal state to approach the roll 1 and the roll ( 1) Fill in the spaces between. In addition, the raised and protruding roll 110 is positioned on the lower surface of the cast steel 6 to support the drawn cast steel 6, and at this time, the amount of cooling water supplied to the cooling water jacket 151 is increased.

In addition, when the horse cast (6) is driven by a shifting table (not shown) to drive the first cylinder 125 to expand the contracted rod to rotate the holder 121 downward, the holder 121 is the base portion When the contact point of the second sensor 142 provided on the lower surface of the recess 130a of the 130 is touched, the roll unit 110 is stopped in a downward non-horizontal state. At this time, the amount of coolant supplied to the coolant jacket 151 is reduced and adjusted to the open state of the solenoid valve (not shown).

The above case is a case of a normal end casting operation, and in an abnormal case in which the end cast is a short cast, the cast is generally referred to as a cast having a length of less than 5000 mm. The cast may be formed on the approach roll table guide device 100. It is appropriate to carry out the transfer operation.

In addition, when the horse slab is bent up and down on the approach roll table guide device 100 and cannot be driven, the rod that is retracted by driving the second cylinder 127 provided on the upper part of the holder 121 is fixed at a predetermined height. When inflated, the roll part 110 contacts the lower surface of the cast piece 6.

When the guide rolls 111 are rotated in a predetermined direction by starting the motor 115 and the approach roll 1 is simultaneously started, the bent abnormal cast pieces 6 are driven by a shifting table in which cutting is performed.

When the above operation is completed, the second cylinder 127 is driven to contract the expanded rod, thereby lowering the roll unit 110 by a predetermined height to return to the original state, and the first cylinder 125 is contracted to shrink the expanded rod. When the rod is inflated, the holder 121 rotates downward and touches the contact point of the second sensor 142 provided in the base 130 to stop the roll 110 in a downward non-horizontal state. At this time, the amount of cooling water supplied to the cooling water jacket 151 is reduced, and the solenoid valve is adjusted to the open state.

The operation as described above is made sequentially by the input program, the second cylinder 127 for raising and lowering the roll 110 by a predetermined height may use a cylinder with a constant stroke, the height of the rod by the operator's operation You can also use a cylinder that can be operated freely.

Therefore, the approach roll table guide device 100 of the present invention is drawn up and protruded at an angle at the beginning of the continuous casting operation and the roll checking operation so that the refraction of the dummy bar head and the roll checker does not occur between the approach roll and the roll. By inducing it can prevent data loss by impact. In addition, during the continuous casting operation, when the final casting cast is pulled through the machine without acting as an obstacle, the end cast and raised to support the lower surface of the cast steel can safely handle the short cast and the normal cast.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention. In addition, the description in parentheses in the description of the claims is intended to prevent obscuration of the description, and the scope of the claims of the claims should be construed to include all the items in parentheses.

10: approach roll table
100: approach roll table guide device
110: roll part
111: guide roll
113: reducer
120: roll guide portion
121: Holder
122: bearing
123: Plate
125: first cylinder
127: second cylinder
130: Base portion
140: sensor unit
141: first sensor
142: second sensor
150: coolant
151: coolant jacket
153 spray nozzle
160:

Claims (8)

A roll unit disposed between the approach roll and the roll provided on the approach roll table, the roll unit having at least one guide roll;
A roll guide part coupled to the roll part and guiding horizontal and downward non-horizontal switching of the roll part such that the roll part is in a horizontal or downward non-horizontal state with the approach roll;
A base part supporting the roll guide part; And
Including a control unit for controlling the roll guide according to the continuous casting operation,
The roll guide unit,
A holder installed rotatably up and down in the base part;
A plate mounted to the upper and lower portions of the holder and to which the roll unit is mounted;
A first cylinder installed at the base part and connected to the holder to drive vertical rotation of the holder; And
Approach roll table guide device is installed on the holder and connected to the plate, the second cylinder for driving the lifting of the plate. The method of claim 1,
The control unit controls the roll guide unit so that the roll unit fills the space between the approach roll and the roll in a horizontal state by rotating the roll unit upward during the initial casting operation and during the roll checking operation. Guide device. The method of claim 1,
And the control unit controls the roll guide unit such that the roll unit is in a downward non-horizontal state below the space between the approach roll and the roll by rotating the roll unit downward during the continuous casting operation. delete According to claim 1, The approach roll table guide device,
Approach roll table guide device is installed on the base portion, further comprising a sensor for contacting the holder when the holder is rotated up and down to detect the horizontal and downward non-horizontal state of the roll. The method of claim 5, wherein the sensor unit,
A first sensor installed at a side surface of the groove formed in the base part and configured to contact when the holder is rotated upward to detect a horizontal state of the roll part; And
Approach roll table guide device is installed on the lower surface of the groove formed in the base portion, the holder comprises a second sensor for contacting when the downward rotation to detect the non-horizontal state of the roll portion. According to claim 1, The approach roll table guide device,
Approach roll table guide device is installed on the roll guide portion, further comprising a cooling unit for cooling the roll unit by spraying cooling water on the surface of the roll unit. The method of claim 7, wherein the cooling unit,
A coolant jacket coupled to the plate; And
Approach roll table guide device is connected to the cooling water jacket, characterized in that it comprises a spray nozzle for spraying the cooling water on the surface of the roll portion.

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