JP6710340B2 - Twin roll type continuous casting machine - Google Patents

Description

The present invention relates to a twin roll type continuous casting device.

In the twin-roll continuous casting machine, when the casting roll is deteriorated due to wear during casting operation, when changing the strip width, when performing maintenance and inspection of related parts, it is necessary to replace the casting roll. May be required.

Since the replacement of the casting roll is a work accompanied by the suspension of the casting operation, shortening the working time for replacing the casting roll is an important issue for improving the productivity.

For example, in Patent Document 1 below, a pair of casting rolls and a pair of casting rolls are attached, and a roll that is horizontally movable in the roll longitudinal direction from a standby position that is shifted downward on one side of the casting position to an intermediate position below the casting position. A continuous metal strip casting apparatus is described that includes a cassette and a hoist that lifts the roll cassette from the intermediate position to a casting position.

Japanese Patent No. 4234819 Japanese Patent Publication No. 5-9185

By the way, if the position of the casting roll is misaligned, the molten steel leaks and the quality of the strip deteriorates.Therefore, in the twin roll type continuous casting apparatus, it is required to firmly support the casting roll at an accurate position. To be done.

Patent Document 1 describes that the indexing means for accurately positioning the frame to which the casting roll is attached is provided, but there is no description about the specific configuration of the indexing means, and even a person skilled in the art can use the casting roll. It is thought that it is not possible to firmly support the correct position.

Although Patent Document 2 describes that a pair of knock pins and a pin hole provided on the lower surface of the frame are fitted together, the change in the distance dimension between the knock pins depending on the temperature of the surrounding environment and the fitting of the pins. Therefore, there is a problem that it is necessary to enlarge the diameter of the pin hole with respect to the knock pin, and it is difficult to firmly support the casting roll at an accurate position.

From the above, the present invention has been made in order to solve the above-mentioned problems, the pair of casting rolls can be easily exchanged, and the pair of casting rolls is firmly supported at an accurate position. It is an object of the present invention to provide a twin roll type continuous casting apparatus that can be used.

The twin roll type continuous casting apparatus according to the present invention for solving the above-mentioned problems,
A pair of casting rolls having a cooling function and rotating in mutually directions, and a pair of casting rolls mounted on the guide rail, and a trolley provided so as to be able to travel on the guide rail, and the guide rail from the casting position to the casting roll replacement position. It is a twin roll type continuous casting device that extends to
At the casting device position, first fixing means for pressing the carriage in a horizontal direction perpendicular to the axis of the casting roll to fix the carriage in a horizontal direction perpendicular to the axis of the casting roll,
Second fixing means for pressing the carriage in the axial direction of the casting roll to fix the carriage in the axial direction of the casting roll at the casting device position.

According to the present invention, the pair of casting rolls can be moved from the casting position to the casting roll exchange position while being mounted on the carriage, so that the pair of casting rolls can be easily exchanged. Since the carriage can be fixed at the casting position in a horizontal direction at right angles to the axis of the casting roll and in the axial direction of the casting roll, the pair of casting rolls can be firmly supported at an accurate position. By the first fixing means and the second fixing means, it is possible to firmly fix the dolly without gaps even if the dimensional change of the dolly occurs due to temperature change during operation.

It is a top view of the twin roll type continuous casting device concerning a first embodiment of the present invention. It is a side view of the said twin roll type continuous casting apparatus. It is a III-III arrow line view in FIG. It is a top view which expanded the casting position with the said twin roll type continuous casting apparatus. It is the side view which expanded the casting position with the said twin roll type continuous casting apparatus. It is a top view which expanded the casting position with the twin roll type continuous casting device concerning a second embodiment of the present invention. It is the side view which expanded the casting position with the said twin roll type continuous casting apparatus. FIG. 8 is an enlarged view of a surrounding line VIII in FIG. 7. It is a front view in the casting position in the twin roll type continuous casting device.

A mode for carrying out a twin-roll type continuous casting apparatus according to the present invention will be described below, but the present invention is not limited to the following embodiments described with reference to the drawings.

[First embodiment]
A twin roll type continuous casting apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
It should be noted that FIG. 1 shows a state before the casting roll carriage is fixed by the first (casting roll axis horizontal direction) fixing device and the second (casting roll axial direction) fixing device at the casting position. FIG. 4 shows a state in which the casting roll carriage is fixed by the first fixing device and the second fixing device at the casting position. FIG. 5 shows a state in which the casting roll carriage is fixed by the second fixing device at the casting position.

In the twin roll type continuous casting apparatus 100 according to the present embodiment, as shown in FIGS. 1 to 5, travels on a pair of left and right guide rails 103 and 104 extending from a casting position P1 to a casting roll replacement position P3. A pair of left and right casting rolls 1a and 1b are mounted on a casting roll carriage 10 that is provided as possible. In the twin roll type continuous casting apparatus 100, the casting position P1, the intermediate position P2, the casting roll exchange position P3, and the trolley moving device retreat position P4 are adjacent to each other in the stated order. The pair of left and right guide rails 103 and 104 correspond to the casting position P1, the intermediate position P2, the casting roll replacement position P3, and the trolley moving device retreat position P4, respectively, and the first guide rail bodies 103A and 104A and the second guide rail body. 103B and 104B, third guide rail bodies 103C and 104C, and fourth guide rail bodies 103D and 104D.

A casting device frame 102 is provided on the guide rails 103 and 104 outside the first guide rail bodies 103A and 104A in the left-right direction (width direction). The casting apparatus frame 102 includes a first frame main body 102a provided outside the first guide rail main body 103A in the guide rail 103, and a second frame provided outside the first guide rail main body 104A in the guide rail 104 on the left side. A main body 102b is provided. At the casting roll exchange position P3, a casting roll carriage exchange device 50, which will be described in detail later, is provided. The pair of left and right guide rails 103 and 104, the casting device frame 102, and the casting roll carriage exchanging device 50 are provided on the pedestal 101.

The casting roll carriage 10 includes a carriage main body 11 having a plate shape and four wheels 13a, 13b, 14a, 14b. The wheel 13a is arranged on the right end 11c of the carriage main body 11 on the front end 11a side, and the wheel 13b is arranged on the right end 11c of the carriage main body 11 on the rear end 11b side. The wheel 14a is arranged on the front end 11a side at the left end 11d of the carriage main body 11, and the wheel 14b is arranged on the rear end 11b side at the left end 11d of the carriage main body 11. That is, the wheels 13 a and 13 b are provided on the carriage main body 11 so that they can travel on the guide rail 103, and the wheels 14 a and 14 b are provided on the carriage main body 11 so that they can travel on the guide rail 104.

The pair of left and right casting rolls 1a and 1b mounted on the casting roll carriage 10 are rotatably supported by bearing boxes 2aa, 2ab, 2ba and 2bb, respectively. The bearing boxes 2aa and 2ba are supported by the support tool 3a. The bearing boxes 2ab and 2bb are supported by the support tool 3b. The supports 3a and 3b are provided on the carriage main body 11 of the casting roll carriage 10. These equipments are arranged such that the axial directions of the casting rolls 1a and 1b extend in the front-rear direction of the carriage main body 11 and are arranged symmetrically in the front-rear direction and the left-right direction of the carriage main body 11.

A cooling water passage (not shown) through which cooling water flows is provided in the casting rolls 1a and 1b. Rotary joints 4aa and 4ab are provided at the ends of the casting roll 1a, respectively. The rotary joints 4aa and 4ab are connected to one end side of the hoses 5a and 5b. The other ends of the hoses 5a and 5b are connected to a cooling water passage (not shown) provided in the carriage main body 11. Rotary joints 4ba and 4bb are respectively provided on the end side of the casting roll 1b. Similar to the rotary joints 4aa and 4ab, the rotary joints 4ba and 4bb are connected to the cooling water passage provided in the truck main body 11 via a hose (not shown).

When the casting roll carriage 10 is placed at the casting position P1, the cooling water passage in the carriage body 11 is connected to the cooling water pipe 107 via the cooling water connector 106, which will be described in detail later. The base end side of the cooling water pipe 107 is connected to a cooling water supply/discharge source or the like for supplying/discharging the cooling water, and the cooling water pipe 107, the cooling water connector 106, the cooling water passage in the carriage main body 11, the hose 5a, Cooling water is supplied to and discharged from the cooling water passages in the casting rolls 1a and 1b via the rotary joints 5aa and the rotary joints 4aa, 4ab, 4ba and 4bb. As a result, the casting rolls 1a and 1b are cooled. The cooling water pipe 107 is supported by a support tool 111 provided on the gantry 101.

At the center of the rear end portion 11b of the carriage main body 11 in the left-right direction, a recessed portion 11ba having a shape recessed toward the front end portion 11a is formed. The recessed portion 11ba is provided with a second stopper receiving member 18 that comes into contact with a tip end portion 47a of a second (casting roll axial direction) stopper 47, which will be described in detail later. A link member receiving member 17 that comes into contact with one end portion 44a of a link member 44 of a second (casting roll axial direction) fixing device 40, which will be described later in detail, is provided in the center of the carriage main body 11 on the front end portion 11a side in the left-right direction. At the center in the left-right direction on the front end portion 11a side of the upper surface portion of the carriage main body 11, there is provided a claw portion 11e having a shape to which a hook 84 of a carriage moving device 80 described later in detail can be locked. The bogie main body 11 is provided with through holes 11f penetrating the upper surface portion and the lower surface portion at the left-right center and the front-rear center.

At the casting position P1, the drive shafts 105a and 105b are supported by the support 112 on the gantry 101. Drive shaft couplings 104a and 104b are provided at the tips of the drive shafts 105a and 105b. When the casting roll carriage 10 is arranged at the casting position P1, the pair of left and right casting rolls 1a and 1b are connected to the drive shafts 105a and 105b via the drive shaft couplings 104a and 104b. The casting rolls 1a and 1b are relatively rotated by the drive shafts 105a and 105b.

The twin-roll type continuous casting apparatus 100 fixes the casting roll carriage 10 at a casting position P1 in a horizontal direction perpendicular to the axes of the casting rolls 1a and 1b (hereinafter referred to as a horizontal direction perpendicular to the casting roll axis) (casting). A fixing device 20 is provided. The first fixing device 20 includes a first pressing device main body 20A and a second pressing device main body 20B provided on the first frame main body 102a of the casting device frame 102. The first pressing device body 20A and the second pressing device body 20B each include a hydraulic cylinder 21.

In the hydraulic cylinder 21 of the first pressing device main body 20A, the piston rod 21a moves back and forth in the horizontal direction perpendicular to the casting roll axis due to the supply and discharge of hydraulic oil (working fluid) into the hydraulic cylinder 21, and the carriage main body 11 moves to the casting position P1. When arranged, the piston rod 21a is arranged so as to press a portion facing the bearing boxes 2aa and 2ba in the horizontal direction perpendicular to the casting roll axis.

The first pressing device body 20A includes a hydraulic oil supply/discharge device 30 that supplies/discharges hydraulic oil into/from the hydraulic cylinder 21. The hydraulic oil supply/discharge device 30 includes a hydraulic oil supply/discharge passage 31, a solenoid valve 32, and a relief valve 34. The base end side and the tip end side of the hydraulic cylinder 21 of the first pressing device body 20A are connected to one end side of each of the first and second passages 31a and 31b in the hydraulic oil supply/discharge passage 31. An electromagnetic valve 32 is provided on the other end side of the first and second passages 31a and 31b. The solenoid valve 32 is connected to a hydraulic oil supply source (not shown). By switching the supply/discharge of the hydraulic oil to/from the hydraulic cylinder 21 by the solenoid valve 32, the forward/backward movement of the piston rod 21a is switched. In addition, one end of the third passage 31c of the hydraulic oil supply/discharge passage 31 is connected to the first passage 31a. A relief valve 34 is provided in the third passage 31c.

In the hydraulic cylinder 21 of the second pressing device main body 20B, the piston rod 21a advances and retreats in the horizontal direction perpendicular to the casting roll axis due to the supply and discharge of hydraulic oil (working fluid) into the hydraulic cylinder 21, and the carriage main body 11 moves to the casting position P1. When arranged, the piston rod 21a is arranged so as to press a portion facing the bearing boxes 2ab, 2bb in the horizontal direction perpendicular to the casting roll axis. The second pressing device body 20B includes the same hydraulic oil supply/discharge device as the first pressing device body 20A.

Therefore, the pressing force F1A by the piston rod 21a of the first pressing device body 20A and the pressing force F1B by the piston rod 21a of the second pressing device body 20B are adjusted to predetermined magnitudes. When the pressing force becomes excessive, the hydraulic oil is discharged through the relief valve 34 and presses the truck main body 11 with an appropriate size (predetermined size). Another means such as using an accumulator may be used to suppress the excessive pressure of the hydraulic oil.

The right side end portion 11c and the left side end portion 11d of the carriage main body 11 are respectively provided with side protruding portions 15a, 15b, 16a, 16b which protrude outward toward the side. The side protrusions 15a, 15b, 16a, 16b are made of, for example, the same material as the casting roll carriage 10 and preferably made of steel. The side protrusions 15a and 16a are arranged at positions facing the piston rod 21a of the first pressing device body 20A in the horizontal direction perpendicular to the casting roll axis when the casting roll carriage 10 is arranged at the casting position P1. The side projections 15b and 16b are arranged at positions facing the piston rod 21a of the second pressing device body 20B in the horizontal direction perpendicular to the casting roll axis when the casting roll carriage 10 is arranged at the casting position P1. Thereby, the amount of advance/retreat of the piston rod 21a of the first pressing device body 20A and the amount of advance/retreat of the piston rod 21a of the second pressing device body 20B can be reduced.

Further, liners (first stoppers) 121a and 121b are provided on the second frame body 102b. The liner 121a is arranged so as to face the lateral protrusion 16a. The liner 121b is arranged so as to face the lateral protrusion 16b. Accordingly, when the casting roll carriage 10 is pressed by the piston rod 21a of the first pressing device body 20A and the piston rod 21a of the second pressing device body 20B, the casting roll carriage 10 is more accurately arranged at the casting position P1. be able to.

The twin roll type continuous casting apparatus 100 includes a second fixing device 40 that fixes the casting roll carriage 10 in the casting roll axial direction at the casting position P1. The second fixing device 40 includes a hydraulic cylinder 41, a link member 44, and a second stopper 47. The link member 44 is fixed to the gantry 101 by the bracket 46 via the shaft body 43, and is fixed to the tip end portion of the piston rod 41 a of the hydraulic cylinder 41 via the shaft body 42. The hydraulic cylinder 41 is fixed to the mount 101 by a bracket 45. The hydraulic cylinder 41 is connected to a hydraulic oil supply/discharge device (not shown), and the tip end portion of the piston rod 41a is supplied by the hydraulic oil supply/discharge device to supply/discharge hydraulic oil (working fluid) into/from the hydraulic cylinder 41. Will move up and down. The second fixing device 40 includes the same hydraulic oil supply/discharge device as the first pressing device body 20A. As the tip end portion of the piston rod 41a extends upward from the shaft body 43, the link member 44 rotates around the shaft body 43 as a starting point, and the one end portion 44a provided on the link member 44 is arranged at the casting position P1. The link member receiving member 17 at the front end 11a of the carriage body 11 is pressed in the casting roll axial direction. The piston rod 41a and the link member 44 are arranged such that the one end portion 44a comes into contact with the link member receiving member 17 of the front end portion 11a of the carriage main body 11 when the link member 44 rotates.

The second stopper 47 is provided on the gantry 101. When the casting roll carriage 10 is arranged at the casting position P1 and is pressed by the link member 44, the second stopper 47 has the tip end 47a contacting the second stopper receiving member 18 provided in the recess 11ba of the carriage main body 11. Arranged to do. As a result, by pressing the carriage main body 11 with the link member 44, the casting roll carriage 10 is fixed in the casting roll axial direction at the casting position P1 by the link member 44 and the second stopper 47.
The pressing force F2 of the link member 44 by the piston rod 41a of the second fixing device 40 is adjusted to a predetermined magnitude. When the pressing force becomes excessive, the hydraulic oil is discharged through the relief valve of the hydraulic oil supply/drainage device provided in the second fixing device 40, and the truck main body 11 has an appropriate size (predetermined size). Will be pressed.

The casting roll carriage exchanging device 50 includes a support table 52 having carriage mounting portions 52a and 52b capable of mounting two casting roll carriages in parallel. The support table 52 is movably provided along the guide rails 51a and 51b on the table 51 provided on the frame 101C at the casting roll exchange position P3. The table 51 has a shape extending in a horizontal direction perpendicular to the extending direction of the guide rails 103 and 104. Under the support table 52, wheels 53a, 53b, 53c that travel on the guide rails 51a, 51b are provided, respectively. The base end side of the side shift operation actuator 54 is fixed to the upper protruding member 57 fixed to the end of the table 51 via the bracket 56. The tip end portion of the shaft body 54 a that is advanced and retracted by the side shift operation actuator 54 is fixed to the support table 52 via the bracket 55. That is, the support table 52 of the casting roll carriage exchanging device 50 becomes movable in the direction A2, and one carriage mounting portion 52a is positioned at the casting roll carriage replacement position P3B, and the one carriage mounting portion 52a and the casting position P1. And a position where the casting roll carriage 10 can be moved via the intermediate position P2, and the other carriage mounting portion 52b is positioned at the casting roll carriage exchange position P3B, and the other middle portion between the other carriage mounting portion 52b and the casting position P1. The casting roll carriage 10 moves at a movable position via the position P2. When the other trolley mounting portion 52b is positioned at the casting roll trolley exchange position P3B, the one trolley mounting portion 52a is positioned at the new casting roll trolley mounting position P3A. When one trolley mounting portion 52a is positioned at the casting roll trolley exchange position P3B, the other trolley mounting portion 52b is positioned at the casting roll trolley retreat position P3C. That is, at the casting roll replacement position P3, the new casting roll carriage mounting position P3A, the casting roll carriage replacement position P3B, and the casting roll carriage retreat position P3C are adjacent in the stated order.
The table 51, the guide rails 51a and 51b, the wheels 53a, 53b and 53c, the upward protruding member 57, the bracket 56, the side shift operation actuator 54, the shaft body 54a, the bracket 55, and the like constitute a support table moving means. ..

The dolly moving device 80 has a dolly moving device main body 81, four wheels 82a, 82b, 83a, 83b, and a hook 84. The four wheels 82a, 82b, 83a, 83b are provided on the carriage moving device main body 81 so that they can travel on the guide rails 103, 104. The hook 84 is provided on the carriage moving device main body 81 and has a shape capable of engaging with the claw portion 11e of the casting roll carriage 10. The wheels 82a, 82b, 83a, 83b of the carriage moving device 80 are rotationally driven by a driving device (not shown) such as a motor.

The carriage moving device 80 can move on the guide rails 103 and 104 over an intermediate position P2, a casting roll replacement position P3, and a carriage moving device retracted position P4. Therefore, when the claw portion 11e of the casting roll carriage 10 is locked by the hook 84 of the carriage moving device 80, the casting roll carriage 10 becomes movable in the direction A1, and the casting position P1, the intermediate position P2, and the casting roll exchange are performed. It will move at the position P3.

Here, a procedure for replacing the casting rolls in the twin roll type continuous casting apparatus 100 described above will be described below. In the casting roll trolley exchange device 50, the other trolley mounting portion 52b of the support table 52 is arranged at the casting roll trolley exchange position P3B adjacent to the casting position P1 via the intermediate position P2. One trolley mounting portion 52a of the support table 52 is arranged at a new casting roll trolley mounting position P3A, a casting roll trolley (new casting roll trolley) 10C1 is mounted on the one trolley mounting portion 52a, and a new casting roll 1a, 1b is mounted on a casting roll carriage (new casting roll carriage) 10C1.

First, the fixation of the casting roll carriage 10 by the first fixing device 20 is released, and the fixation of the casting roll carriage 10 by the second fixing device 40 is released. Hydraulic oil is supplied to and discharged from the hydraulic cylinder 21 of the first pressing device body 20A and the hydraulic cylinder 21 of the second pressing device body 20B to contract the piston rods 21a and 21a of the respective device bodies 20A and 20B. As a result, the fixation of the casting roll carriage 10 in the horizontal direction perpendicular to the casting roll axis is released. Further, hydraulic oil is supplied to and discharged from the hydraulic cylinder 41 of the second fixing device 40 to contract the piston rod 41a and rotate the link member 44. As a result, the fixation of the casting roll carriage 10 in the casting roll axial direction is released.

Subsequently, the casting roll carriage (exchange target casting roll carriage) 10 on which the casting rolls 1a and 1b to be replaced are mounted is moved from the casting position P1 to the casting roll replacement position P3 by the carriage moving device 80. As a result, the replacement casting roll carriage 10 is arranged on the other carriage mounting portion 52b of the support table 52 of the casting roll carriage exchanging device 50. At this time, the connection of the drive shafts 105a and 105b, the cooling water pipe 107, etc. is automatically released.

Then, the support table 52 is moved so that the new casting roll carriage 10C1 mounted on the one carriage mounting portion 52a is located at the casting roll carriage replacement position P3B. That is, the guide rails 103C1 and 104C1 on the one carriage mounting portion 52a of the support table 52 are linear with the second guide rail bodies 103B and 104B at the intermediate position P2 and the fourth guide rail bodies 103D and 104D at the moving device retreat position P4. The support table 52 is moved so as to be in the shape. At this time, the replacement casting roll carriage 10 mounted on the other carriage mounting portion 52b of the support table 52 is positioned at the casting roll carriage retreat position P3C.

Then, the new casting roll carriage 10C1 is moved from the casting roll carriage exchange position P3B to the casting position P1 by the carriage moving device 80. At this time, the drive shafts 105a and 105b and the cooling water pipe 107 are automatically connected. The new casting roll carriage 10C1 is fixed in the horizontal direction perpendicular to the casting roll axis by the first fixing device 20, and the new casting roll carriage 10C1 is fixed in the casting roll axial direction by the second fixing device 40. As a result, the new casting roll carriage 10C1 is more accurately arranged at the casting position P1.

In this way, the target casting roll carriage and the new casting roll carriage can be easily replaced.

Therefore, according to the present embodiment, the pair of casting rolls 1a and 1b having a cooling function and rotating in the mutual directions and the pair of casting rolls 1a and 1b are mounted and provided so as to be able to travel on the guide rails 103 and 104. Since it is a twin roll type continuous casting apparatus 100 that includes the casting roll carriage 10 and the guide rails 103 and 104 extend from the casting position P1 to the casting roll exchange position P3, a pair of casting rolls 1a and 1b are mounted. The casting roll carriage 10 can move between the casting position P1 and the casting roll exchange position P3, and the pair of casting rolls 1a and 1b can be easily exchanged. A first fixing device 20 that presses the casting roll carriage 10 in the horizontal direction perpendicular to the casting roll axis at the casting position P1 to fix the casting roll carriage 10 in the horizontal direction perpendicular to the casting roll axis, and a casting roll carriage in the casting roll axial direction. Fixing the casting roll carriage 10 in the horizontal direction perpendicular to the casting roll axis and the casting roll axis direction by providing the second fixing device 40 that presses 10 to fix the casting roll carriage 10 in the casting roll axial direction. Therefore, the pair of casting rolls 1a and 1b can be firmly supported at an accurate position. By the first fixing device 10 and the second fixing device 40, it is possible to firmly fix the casting roll carriage 10 without a gap during operation even if the dimensional change of the casting roll carriage 10 occurs due to temperature change.

The first pressing device main body 20A and the second pressing device main body 20B included in the first fixing device 20 and the second fixing device 40 are the piston rods 21a of the hydraulic cylinders 21, 21, 41 that advance and retreat by the supply and discharge of hydraulic oil. 21a, 41a, hydraulic oil supply/discharge passages 31, 31, 31 for supplying/discharging hydraulic oil to/from the hydraulic cylinders 21, 21, 41, and excessive pressures provided in the hydraulic oil supply/discharge passages 31, 31, 31. By having the relief valves 34, 34, 34 respectively suppressed, even if the size of the equipment changes due to temperature change, a predetermined pressing force is applied to the casting roll carriage 10 and the casting position P1. Can be placed in the correct position. That is, the pair of casting rolls 1a and 1b can be firmly supported at an accurate position.

The piston rod 21a of the first pressing device body 20A is arranged to face the bearing boxes 2aa, 2ba in the width direction of the casting roll carriage 10 (horizontal direction perpendicular to the casting roll axis), and the piston of the second pressing device body 20B is arranged. By arranging the rod 21a so as to face the bearing boxes 2ab, 2bb in the width direction of the casting roll carriage 10 (horizontal direction perpendicular to the casting roll axis), it is possible to suppress deterioration in positioning accuracy of the casting rolls 1a, 1b. it can.

It has side projections 15a, 15b, 16a, 16b provided on the side ends 11c, 11d of the casting roll carriage 10, and the side projections 15a, 16a face the piston rod 21a of the first pressing device body 20A. And the side projections 15b and 16b are arranged so as to face the piston rod 21a of the second pressing device body 20B, so that the piston rod of the piston rod can be made smaller than the case without the side projections. The amount of advance/retreat can be reduced.

A casting roll carriage exchanging device 50 for exchanging the casting roll carriage with another casting roll carriage is further provided, and the casting roll carriage exchanging device 50 has carriage mounting portions 52a and 52b capable of mounting two casting roll carriages in parallel. The support table 52, a position where the casting roll carriage 10 can move between one carriage mounting portion 52a of the support table 52 and the casting position P1, and the other carriage mounting portion 52b of the supporting table 52 and the casting position P1. By having the side shift operation actuator 54 that moves the support table 52 at a position where the casting roll carriage 10 can move between the casting roll carriage 10 and the casting rolls 1 a and 1 b. Can be easily replaced.

[Second embodiment]
A twin roll type continuous casting apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 6 to 9.
The present embodiment has a configuration in which a third (vertical direction) fixing device is added to the twin roll type continuous casting apparatus of the first embodiment shown in FIG. Other configurations are almost the same as those of the above-described device shown in FIGS. 1 to 5, and the same reference numerals are given to the same devices, and redundant description will be appropriately omitted.
Note that FIG. 6 shows a state in which the casting roll carriage is fixed by the first fixing device and the second fixing device at the casting position. FIG. 7 shows a state in which the casting roll carriage is fixed by the second fixing device at the casting position.

The twin roll continuous casting apparatus 100A according to the present embodiment further includes a third fixing device 60, as shown in FIGS. 6 to 9. The third fixing device 60 includes a first pressing device body 60A and a second pressing device body 60B.

The first pressing device body 60A includes a hydraulic cylinder 61 fixed to the first frame body 102a by a bracket 62. The hydraulic cylinder 61 of the first pressing device body 60A is arranged so that the piston rod 61a moves vertically downward. The second pressing device body 60B includes a hydraulic cylinder 61 fixed to the second frame body 102b by a bracket 62. The hydraulic cylinder 61 of the second pressing device body 60B is arranged so that the piston rod 61a moves vertically downward. The first pressing device main body 60A and the second pressing device main body 60B each include the same hydraulic oil supply/discharge device as the first pressing device main body 20A.

Therefore, the pressing force F3A by the piston rod 61a of the first pressing device body 60A and the pressing force F3B by the piston rod 61a of the second pressing device body 60B are adjusted to predetermined magnitudes. When the pressing force becomes excessive, the working oil (working fluid) is discharged through the relief valve of the working oil supply/discharge device provided in each of the first and second pressing device bodies 60A and 60B, and the appropriate size is obtained. The trolley body 11 is pressed with a predetermined size (predetermined size).

The hydraulic cylinder 61 of the first pressing device body 60A is arranged adjacent to each of the side protrusions 15a and 15b. The hydraulic cylinder 61 of the second pressing device main body 60B is arranged adjacent to each of the lateral protrusions 16a and 16b.

The twin roll type continuous casting apparatus 100A has a casting roll carriage 10A in which wheels 13c and 14c are provided adjacent to the wheels 13b and 14b at side end portions 11c and 11d of the carriage body 11, respectively. That is, the casting roll carriage 10A has six wheels 13a, 13b, 13c, 14a, 14b, 14c.

The first guide rail main body 103A of the guide rail 103 is provided with recesses 103Aa, 103Ab, 103Ac corresponding to the wheels 13a, 13b, 13c. The first guide rail main body 104A of the guide rail 104 is provided with recesses (not shown) corresponding to the wheels 14a, 14b, 14c. As a result, when the casting roll carriage 10A is arranged at the casting position P1, the liners 19aa, 19ab, 19ba on the carriage body 11 side are placed on the liners 109aa, 109ab, 109ba on the base 101 side, as will be described later in detail. become. Further, the liner 19bb provided on the trolley body 11 side rides on the liner (not shown) provided on the gantry 101 side. This avoids contact between the wheels 13a, 13b, 13c and the guide rail 103A, and avoids contact between the wheels 14a, 14b, 14c and the guide rail 104A.

Liners 19aa and 19ab and liners 109aa and 109ab are provided on the lower surface of the trolley body 11 and the gantry 101, respectively, below the piston rod 61a of the hydraulic cylinder 61 of the first pressing device body 60A.

Liners 19ba and 19bb are provided on the lower surface of the trolley body 11 under the piston rod 61a of the hydraulic cylinder 61 of the second pressing device body 60B. Further, the gantry 101 is provided with a liner 109ba and a liner (not shown) corresponding to the liners 19ba and 19bb.

Therefore, according to the twin roll type continuous casting apparatus 100A according to the present embodiment, in addition to the same effects as the twin roll type continuous casting apparatus 100 described above, the third fixing device 60 is provided, and thus the casting position is improved. At P1, the casting roll carriage 10A can be accurately arranged even in the vertical direction. Thereby, the casting rolls 1a and 1b can be firmly supported at a more accurate position.

The first and second pressing device bodies 60A and 60B provided in the third fixing device 60 are provided with piston rods 61a and 61a of the hydraulic cylinders 61 and 61 that advance and retreat by supplying and discharging hydraulic oil, and hydraulic oil to the hydraulic cylinders 61 and 61. Since the hydraulic oil supply/discharge passages 31, 31 for supplying/discharging and the relief valves 34, 34 provided in the hydraulic oil supply/discharge passages 31, 31 for suppressing excessive pressure are provided respectively, Even if the size of the equipment changes, it is possible to apply a pressing force of a predetermined magnitude to the casting roll carriage 10A and place it at an accurate position at the casting position P1. That is, the pair of casting rolls 1a and 1b can be firmly supported at an accurate position.

Further, at the casting position P1, the casting roll carriage 10A is supported by the liners provided on the casting roll carriage 10A and the gantry 101, respectively, so that the casting roll carriage 10A is more accurately arranged in the vertical direction. be able to.

Further, the first guide rail body 103A of the guide rail 103 has concave portions 103Aa, 103Ab, 103Ac provided corresponding to the wheels 13a, 13b, 13c of the casting roll carriage 10A at the casting position P1. The first guide rail main body 104A of 104 has the recesses provided corresponding to the wheels 14a, 14b, and 14c of the casting roll carriage 10A at the casting position P1, so that the casting roll carriage 10A can be extended in the vertical direction. It can be placed more accurately.

The first and second pressing device bodies 60A and 60B are so arranged that the piston rods 61a and 61a of the first and second pressing device bodies 60A and 60B press the width direction outer sides of the bearing boxes 2aa, 2ba, 2ab and 2bb, respectively. By providing the casting roll carriage 10A, vertical movement of the casting roll carriage 10A due to rotation of the casting rolls 1a and 1b can be suppressed, and the casting roll carriage 10A can be firmly fixed in the vertical direction.

[Other Embodiments]
In the above, the casting roll carriage 10A has three wheels in the extending direction of the guide rails 103 and 104, and the guide rails 103 and 104 correspond to the three wheels of the casting roll carriage 10A at the casting position P1. Although the twin-roll type continuous casting apparatus 100A having the recesses provided as described above has been described, the numbers of the wheels and the recesses are not limited to three in the extending direction of the guide rails, and may be four or more.

1a, 1b Casting roll 10 Casting roll carriage 11 Truck body 13a, 13b Wheels 14a, 14b Wheels 15a, 15b Side protrusions 16a, 16b Side protrusion 20 First fixing device 20A First pressing device body 20B Second pressing device Main body 30 Hydraulic fluid supply/discharge device 34 Relief valve (excessive pressure suppressing means)
40 2nd fixing device 50 Casting roll trolley exchange device 60 3rd fixing device 60A 1st pressing device main body 60B 2nd pressing device main body 80 Bogie moving device 100,100A Twin roll type continuous casting device 103,104 Guide rail

Claims (9)

A pair of casting rolls having a cooling function and rotating in mutually directions, and a pair of casting rolls mounted on the guide rail, and a trolley provided so as to be able to travel on the guide rail, and the guide rail from the casting position to the casting roll replacement position. It is a twin roll type continuous casting device that extends to
At the casting position, first fixing means for pressing the carriage in a horizontal direction perpendicular to the axis of the casting roll to fix the carriage in a horizontal direction perpendicular to the axis of the casting roll,
A twin-roll continuous casting apparatus comprising: a second fixing unit that presses the carriage in the axial direction of the casting roll at the casting position to fix the carriage in the axial direction of the casting roll. A twin roll type continuous casting apparatus according to claim 1,
The first fixing means and the second fixing means include a piston rod of a cylinder that moves forward and backward by supplying and discharging a working fluid, a working fluid supply and discharge passage that supplies and discharges the working fluid to and from the cylinder, and a working fluid supply and discharge passage. A twin-roll type continuous casting apparatus, which is provided with an overpressure suppressing means for suppressing an overpressure. A twin roll type continuous casting apparatus according to claim 1 or 2, wherein
The pair of casting rolls are rotatably supported by bearings,
The twin roll type continuous casting device, wherein the piston rod of the first fixing means is arranged to face the bearing in the width direction of the carriage. A twin roll type continuous casting apparatus according to claim 3,
Provided on a side portion of the trolley, and having a lateral protrusion that protrudes toward the outside of the side portion of the trolley,
The twin roll type continuous casting apparatus, wherein the lateral protrusion is arranged so as to face the piston rod of the first fixing means. The twin roll type continuous casting apparatus according to any one of claims 1 to 4,
Further comprising bogie exchange means for exchanging the bogie with another bogie,
The trolley exchange means includes a support table having a trolley mounting portion on which the two trolleys can be mounted in parallel, a position at which the trolley can be moved between one of the trolley mounting portions and the casting position, and the other. 2. A twin roll type continuous casting apparatus, comprising: a support table moving unit that moves the support table at a position where the carriage can move between the carriage mounting portion and the casting position. A twin roll type continuous casting apparatus according to any one of claims 1 to 5,
A twin-roll type continuous casting apparatus comprising third fixing means for pressing the dolly in the vertical direction to fix the dolly in the vertical direction. A twin roll type continuous casting apparatus according to claim 6,
The third fixing means is provided in the piston rod of the cylinder that advances and retreats by supplying and discharging the working fluid, the working fluid pressure supply and discharge passage that supplies and discharges the working fluid to and from the cylinder, and the working fluid supply and discharge passage. A twin roll type continuous casting apparatus comprising: an excessive pressure suppressing means for suppressing an excessive pressure. A twin roll type continuous casting apparatus according to claim 1 or 6 , wherein
A twin roll type continuous casting apparatus comprising a liner for supporting the carriage at the casting position. A twin roll type continuous casting apparatus according to claim 6 or 7 , wherein
The cart has three or more wheels in the extending direction of the guide rail,
The twin-roll type continuous casting apparatus, wherein the guide rail has a recessed portion provided at the casting position so as to correspond to the three or more wheels of the carriage.