CN110099763B - Twin roll type continuous casting apparatus - Google Patents
Twin roll type continuous casting apparatus Download PDFInfo
- Publication number
- CN110099763B CN110099763B CN201680091700.3A CN201680091700A CN110099763B CN 110099763 B CN110099763 B CN 110099763B CN 201680091700 A CN201680091700 A CN 201680091700A CN 110099763 B CN110099763 B CN 110099763B
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- carriage
- casting
- fixing device
- roll
- casting roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
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- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
A twin-roll continuous casting apparatus is provided with a first fixing device (20) for pressing a casting roll carriage (10) in the horizontal direction perpendicular to the axes of casting rolls (1a, 1b) to fix the casting roll carriage in the horizontal direction perpendicular to the axes of the casting rolls, and a second fixing device (40) for pressing the casting roll carriage in the axial direction of the casting rolls to fix the casting roll carriage in the axial direction of the casting rolls. The casting device can easily replace a pair of casting rolls and can firmly support the pair of casting rolls at the correct position.
Description
Technical Field
The invention provides a twin-roll continuous casting apparatus.
Background
In a twin roll continuous casting apparatus, when the casting rolls are deteriorated due to wear or the like caused by casting work, the casting rolls may need to be replaced when the strip width of the strip is changed, when maintenance or inspection of parts is performed, or the like.
Since replacement of casting rolls is accompanied by stoppage of casting work, shortening of the time required for replacement of casting rolls has become an important issue in improving productivity.
For example, patent document 1 listed below describes a metal strip continuous casting apparatus including a pair of casting rolls, a roll cassette to which the pair of casting rolls are attached and which is horizontally movable in a roll length direction from a standby position deviated from a lower position on one side of a casting position to an intermediate position below the casting position, and an elevator for elevating the roll cassette from the intermediate position to the casting position.
Prior art documents
Patent document
Patent document 1: japanese patent No. 4234819
Patent document 2: japanese examined patent publication No. 5-9185
Disclosure of Invention
Problems to be solved by the invention
However, if the casting rolls are misaligned, molten steel leaks or the quality of the strip is degraded, and therefore, in the twin roll continuous casting apparatus, it is required to firmly support the casting rolls at the correct positions.
Patent document 1 describes a case where an index device for accurately positioning a frame to which a casting roll is attached is provided, but the specific configuration of the index device is not described, and it is considered that even a person of ordinary skill in the art cannot firmly support the casting roll at an accurate position.
Patent document 2 describes a case where a pair of positioning pins are fitted into pin holes provided in a lower surface of a frame, but since a change in the distance dimension between the positioning pins and a gap for fitting the pins are required according to the temperature of the surrounding environment, there is a problem that the diameter of the pin holes needs to be enlarged for the positioning pins, and it is difficult to firmly support the casting rolls at the correct positions by this amount.
In view of the above, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a twin-roll continuous casting apparatus capable of easily replacing a pair of casting rolls and firmly supporting the pair of casting rolls at an accurate position.
Means for solving the problems
A twin-roll continuous casting apparatus according to the present invention for solving the above-described problems includes a pair of casting rolls having a cooling function and rotating in a mutual direction, and a carriage on which the pair of casting rolls are mounted and which is provided so as to be movable on a guide rail extending from a casting position to a casting roll replacement position, the twin-roll continuous casting apparatus including: a first fixing device that fixes the carriage in a horizontal direction at right angles to the axes of the casting rolls by pressing the carriage in the horizontal direction at right angles to the axes of the casting rolls at the casting position; a second fixing device 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.
Effects of the invention
According to the present invention, since the pair of casting rolls can be moved from the casting position to the casting roll replacement position in a state where the pair of casting rolls are mounted on the carriage, the pair of casting rolls can be easily replaced. Since the carriage can be fixed in the casting position in the vertical horizontal direction and the axial direction of the casting rolls with respect to the axes of the casting rolls, the pair of casting rolls can be firmly supported at the correct position. With the first fixing device and the second fixing device, even if the size of the carriage changes due to temperature changes during operation, the carriage can be firmly fixed without a gap.
Drawings
Fig. 1 is a plan view of a twin roll continuous casting apparatus according to a first embodiment of the present invention.
Fig. 2 is a side view of the twin roll continuous casting apparatus.
Fig. 3 is a view of the arrows III-III in fig. 2.
Fig. 4 is a plan view of the twin roll continuous casting apparatus with the casting position enlarged.
Fig. 5 is a side view of the twin roll continuous casting apparatus with the casting position enlarged.
Fig. 6 is an enlarged plan view of a casting position in the twin roll continuous casting apparatus according to the second embodiment of the present invention.
Fig. 7 is a side view of the twin roll continuous casting apparatus with the casting position enlarged.
Fig. 8 is an enlarged view of the frame line VIII in fig. 7.
Fig. 9 is a front view of the casting position in the twin roll continuous casting apparatus.
Detailed Description
Hereinafter, a specific embodiment of the twin roll continuous casting apparatus according to the present invention will be described, but the present invention is not limited to the following embodiment described with reference to the drawings.
[ first embodiment ]
A twin-roll continuous casting apparatus according to a first embodiment of the present invention will be described with reference to fig. 1 to 5.
Fig. 1 shows a state before the casting roll carriage is fixed by the first (casting roll axis direction perpendicular to the horizontal direction) fixing device and the second (casting roll axis direction) fixing device at the casting position. Fig. 4 shows a state in which the casting roll carriages are 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 carriages are fixed by the second fixing device at the casting position.
In the twin-roll continuous casting apparatus 100 according to the present embodiment, as shown in fig. 1 to 5, a pair of left and right casting rolls 1a and 1b are mounted on a casting roll carriage 10 provided so as to be capable of traveling on a pair of left and right guide rails 103 and 104 extending from a straddle casting position P1 to a casting roll replacement position P3. In the twin-roll continuous casting apparatus 100, the casting position P1, the intermediate position P2, the casting roll replacement position P3, and the carriage moving device retreat position P4 are adjacent in the order described. The pair of left and right guide rails 103 and 104 are constituted by first guide rail bodies 103A and 104A, second guide rail bodies 103B and 104B, third guide rail bodies 103C and 104C, and fourth guide rail bodies 103D and 104D corresponding to the casting position P1, the intermediate position P2, the casting roll replacement position P3, and the carriage moving device retreat position P4, respectively.
A casting apparatus frame 102 is provided on the outer side in the left-right direction (width direction) of the first rail bodies 103A, 104A of the rails 103, 104. The casting device frame 102 includes a first frame body 102a provided on the right side outer side of a first rail body 103A of the rail 103, and a second frame body 102b provided on the left side outer side of a first rail body 104A of the rail 104. The casting roll carriage changer 50, which will be described later in detail, is provided at the casting roll replacement position P3. The pair of left and right guide rails 103 and 104, the casting apparatus frame 102, and the casting roll carriage changer 50 are provided on the carriage 101.
The casting roll carriage 10 includes a carriage body 11 formed in a plate shape, and four wheels 13a, 13B, 14a, and 14B. The wheels 13a are disposed on the front end portion 11a side at the right side end portion 11c of the carriage body 11, and the wheels 13b are disposed on the rear end portion 11b side at the right side end portion 11c of the carriage body 11. The wheels 14a are disposed on the front end portion 11a side at the left side end portion 11d of the carriage body 11, and the wheels 14b are disposed on the rear end portion 11b side at the left side end portion 11d of the carriage body 11. That is, the wheels 13a and 13b are provided on the carriage body 11 so as to be able to run on the guide rails 103, and the wheels 14a and 14b are provided on the carriage body 11 so as to be able to run on the guide rails 104.
A pair of left and right casting rolls 1a and 1b mounted on a casting roll carriage are rotatably supported by bearing blocks 2aa, 2ab, 2ba, and 2bb, respectively. The bearing seats 2aa, 2ba are supported by the support member 3 a. The bearing blocks 2ab, 2bb are supported by the support member 3 b. The supports 3a, 3b are provided on a carriage body 11 of the casting roll carriage 10. These facilities are arranged so that the axial directions of the casting rolls 1a and 1b extend in the front-rear direction of the carriage body 11, and are arranged so as to be symmetrical in the front-rear direction and the left-right direction at the carriage body 11.
Cooling water passages (not shown) through which cooling water flows are provided in the casting rolls 1a and 1 b. The rotary joints 4aa and 4ab are provided on the end portions of the casting rolls 1 a. The rotary joints 4aa and 4ab are connected to one end side of the hoses 5a and 5 b. The other end side of the hoses 5a and 5b is connected to a cooling water passage (not shown) provided in the carriage body 11. Rotary joints 4ba and 4bb are provided on the end portions of the casting rolls 1b, respectively. The rotary joints 4ba and 4bb are connected to the cooling water passage provided in the carriage body 11 via hoses (not shown), similarly to the rotary joints 4aa and 4 ab.
When the casting roll carriage 10 is disposed at the casting position P1, the cooling water passage in the carriage body 11 is connected to a cooling water pipe 107 via a cooling water connector 106, which will be described later in detail. A cooling water supply and discharge source for supplying and discharging cooling water is connected to the base end side of the cooling water pipe 107, and the supply and discharge of cooling water to the cooling water passages in the casting rolls 1a and 1b are performed via the cooling water pipe 107, the cooling water connector 106, the cooling water passages in the carriage body 11, the hoses 5a and 5b, the rotary joints 4aa and 4ab, 4ba, and 4bb, and the like. Thereby, the casting rolls 1a, 1b are cooled. The cooling water pipe 107 is supported by a support 111 provided on the vehicle body frame 101.
A recess 11ba having a shape recessed toward the front end portion 11a is formed in the center of the rear end portion 11b of the carriage body 11 in the lateral direction. The recess 11ba is provided with a second stopper receiving member 18 that contacts a tip portion 47a of a second (casting roll axial direction) stopper 47, which will be described later in detail. A connection member receiving member 17 that contacts a distal end portion 44a of a connection member 44 of a second (casting roll axis direction) fixing device 40, which will be described later in detail, is provided at the center in the left-right direction on the distal end portion 11a side of the carriage body 11. A claw portion 11e having a shape capable of being engaged with a hook 84 of a carriage moving device 80, which will be described later in detail, is provided at the center in the left-right direction on the front end portion 11a side of the middle portion of the upper surface of the carriage main body 11. The carriage body 11 is provided with a through hole 11f penetrating the upper surface portion and the lower surface portion at the center in the left-right direction and the center in the front-rear direction.
In the casting position P1, the drive shafts 105a, 105b are supported on the frame 101 by the support 112. Drive shaft couplings 104a and 104b are provided at the distal ends of the drive shafts 105a and 105 b. When the casting roll carriage 10 is disposed at the casting position P1, the pair of left and right casting rolls 1a and 1b are coupled to the drive shafts 105a and 105b via the drive shaft couplings 104a and 104 b. The casting rolls 1a, 1b are relatively rotated by drive shafts 105a, 105 b.
The twin-roll continuous casting apparatus 100 includes a first (casting roll shaft perpendicular horizontal direction) fixing device 20 for fixing the casting roll carriage 10 in a perpendicular horizontal direction (hereinafter, referred to as casting roll shaft perpendicular horizontal direction) to the axes of the casting rolls 1a and 1b at the casting position P1. The first fixing device 20 includes a first pressing device body 20A and a second pressing device body 20B provided on a first frame 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.
The cylinder 21 of the first pressing device body 20A is disposed such that when the carriage body 11 is disposed at the casting position P1 by advancing and retracting the piston rod 21a in the casting roller axis perpendicular horizontal direction by supplying and discharging the hydraulic oil (working fluid) to and from the cylinder 21, the piston rod 21a presses the portions facing the bearing seats 2aa and 2ba in the casting roller axis perpendicular horizontal direction.
The first pressing device body 20A includes a hydraulic oil supply and discharge device 30 that supplies and discharges hydraulic oil to and from the inside of the hydraulic cylinder 21. The hydraulic oil supply and discharge device 30 includes a hydraulic oil supply and discharge passage 31, a solenoid valve 32, and a relief valve 34. The base end portion side and the tip end portion side of the hydraulic cylinder 21 of the first pressing device body 20A are connected to one end portion side of the first and second passages 31a, 31b in the hydraulic oil supply and discharge passage 31, respectively. An electromagnetic valve 32 is provided on the other end side of the first and second passages 31a, 31 b. The solenoid valve 32 is connected to a working oil supply source (not shown). The forward and backward movement of the piston rod 21a is switched by alternately supplying and discharging the hydraulic oil to and from the hydraulic cylinder 21 by the electromagnetic valve 32. One end side of the third passage 31c of the hydraulic oil supply and discharge passage 31 is connected to the first passage 31 a. On the third passage 31c, a relief valve 34 is provided.
The hydraulic cylinder 21 of the second pressing device body 20B is disposed such that the piston rod 21a presses the portions facing the bearing seats 2ab and 2bb in the casting roller axis direction when the piston rod 21a is advanced and retreated in the casting roller axis direction at right angles in the horizontal direction by the supply and discharge of the hydraulic fluid (working fluid) into and from the hydraulic cylinder 21 and the carriage body 11 is disposed at the casting position P1. The second pressing device body 20B includes the same hydraulic oil supply and discharge device as the first pressing device body 20A.
Therefore, the pressing force F1A of the piston rod 21a of the first pressing device body 20A and the pressing force F1B of the piston rod 21a of the second pressing device body 20B are respectively adjusted to predetermined magnitudes. When the pressing force is excessive, the hydraulic oil is discharged through the relief valve 34, and presses the carriage body 11 with an appropriate magnitude (predetermined magnitude). When the excessive pressure of the hydraulic oil is suppressed, another device such as an accumulator may be used.
In addition, the second frame body 102b is provided with pads (first stoppers) 121a and 121 b. The pad 121a is disposed so as to face the side protruding portion 16 a. The pad 121b is disposed so as to face the side protruding portion 16 b. 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 can be more accurately disposed at the casting position P1.
The twin-roll 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 connecting member 44, and a second stopper 47. The connection member 44 is fixed to the frame 101 via the shaft body 43 and the bracket 46, and is fixed to the distal end portion of the piston rod 41a of the hydraulic cylinder 41 via the shaft body 42. The hydraulic cylinder 41 is fixed to the frame 101 by a bracket 45. The hydraulic cylinder 41 is connected to a hydraulic oil supply and discharge device (not shown), and the hydraulic oil (hydraulic fluid) is supplied and discharged into the hydraulic cylinder 41 by the hydraulic oil supply and discharge device, whereby the distal end portion of the piston rod 41a is advanced and retreated in the vertical direction. The second fixing device 40 includes the same hydraulic oil supply and discharge device as the first pressing device body 20A. The distal end portion of the piston rod 41a extends upward through the shaft body 43, whereby the connection member 44 rotates with the shaft body 43 as the origin, and the distal end portion 44a provided in the connection member 44 presses the connection member receiving member 17 of the distal end portion 11a of the carriage body 44 disposed at the casting position P1 in the axial direction of the casting roller. When the connecting member 44 rotates, the piston rod 41a and the connecting member 44 are disposed such that the distal end portion 44a contacts the connecting member receiving member 17 of the distal end portion 11a of the carriage body 11.
The second stopper 47 is provided on the frame 101. The second stopper 47 is disposed such that the distal end portion 47a contacts the second stopper receiving member 18 provided in the recessed portion 11ba of the carriage body 11 when the casting roll carriage 10 is disposed at the casting position P1 and pressed by the connecting member 44. Thus, by pressing the carriage body 11 with the connecting member 44, the casting roll carriage 10 is fixed at the casting position P1 and in the casting roll axial direction by the connecting member 44 and the second stopper 47.
Then, the pressing force F2 of the connecting member 44 of the piston rod 41a of the second fixing device 40 is adjusted to a predetermined magnitude. When the pressing force is excessive, the hydraulic oil is discharged through the safety valve of the hydraulic oil supply and discharge device provided in the second fixing device 40, and the carriage body 11 is pressed with an appropriate magnitude (predetermined magnitude).
The casting roll carriage changer 50 includes a support table 52, and the support table 52 includes carriage mounting portions 52a and 52b on which two casting roll carriages can be mounted in parallel. The support table 52 is provided so as to be movable along the guide rails 51a and 51b on the table 51 provided at the carriage 101C of the casting roll replacement position P3. The table 51 is formed in a shape extending in a perpendicular horizontal direction with respect to the extending direction of the guide rails 103 and 104. Wheels 53a, 53b, and 53c that run on the guide rails 51a and 51b are provided on the lower portion of the support table 52. A base end side of the actuator 54 for moving the side shifter is fixed to an upper projecting member 57 fixed to an end of the table 51 via a bracket 56. The tip end portion of the shaft body 54a, which advances and retracts by the side shifter operation actuator 54, is fixed to the support base 52 via a bracket 55. That is, the support table 52 of the casting roll carriage changer 50 is movable in the direction a2, and is moved at a position where one carriage-mounted part 52a is positioned at the casting roll carriage change position P3B and the casting roll carriage 10 is movable between the one carriage-mounted part 52a and the casting position P1 via the intermediate position P2, and at a position where the other carriage-mounted part 52b is positioned at the casting roll carriage change position P3B and the casting roll carriage 10 is movable between the other carriage-mounted part 52b and the casting position P1 via the intermediate position P2. When the other carriage-mounted part 52b is positioned at the casting roll carriage replacement position P3B, the one carriage-mounted part 52a is positioned at the new casting roll carriage mounting position P3A. When one carriage-mounted part 52a is positioned at the casting roll carriage replacement position P3B, the other carriage-mounted part 52b is positioned at the casting roll carriage retreat position P3C. That is, in 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, 51b, the wheels 53a, 53b, 53c, the upward protruding member 57, the bracket 56, the side shifter operating actuator 54, the shaft body 54a, the bracket 55, and the like constitute a support table moving device.
The carriage moving device 80 has a carriage 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 as to be capable of running on the guide rails 103, 104. The hook 84 is provided on the carriage moving device main body 81 and is shaped to be engageable with the claw portion 11e of the casting roll carriage 10. The wheels 82a, 82b, 83a, and 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 by striding over the intermediate position P2, the casting roll replacement position P3, and the carriage moving device retreat position P4. Therefore, when the claw portion 11e of the casting roll carriage 10 is caught by the hook 84 of the carriage moving device 80, the casting roll carriage 10 can move in the direction a1, and move to the casting position P1, the intermediate position P2, and the casting roll replacement position P3.
Here, the procedure of replacing the casting rolls in the twin roll continuous casting apparatus 100 will be described below. In the casting roll carriage changer 50, the support carriage 52 is disposed at the casting roll carriage changing position P3B at which the other carriage carrying portion 52b is adjacent to the casting position P1 via the intermediate position P2, the casting roll carriage (new casting roll carriage) 10C1 is mounted on the one carriage carrying portion 52a, and the casting rolls 1a and 1b of new products are mounted on the casting roll carriage (new casting roll carriage) 10C 1.
First, the fixing of the casting roll carriage 10 by the first fixing device 20 is released, and the fixing of the casting roll carriage 10 by the second fixing device 40 is released. The hydraulic fluid is supplied to and discharged from the first pressing device body 20A to the hydraulic cylinder 21 and from the second pressing device body 20B to the hydraulic cylinder 21, and the piston rods 21a, 21a of the respective device bodies 20A, 20B are contracted. Thereby, the fixing of the casting roll carriage 10 in the horizontal direction perpendicular to the casting roll axis is released. Further, the hydraulic oil is supplied to and discharged from the hydraulic cylinder 41 of the second fixing device 40, so that the piston rod 41a is contracted, and the connecting member 44 is rotated. Thereby, the fixing of the casting roll carriage 10 in the axial direction of the casting roll is released.
Next, the casting roll carriage (casting roll carriage to be replaced) 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. Thus, the replacement-target casting roll carriage 10 is disposed on the other carriage-mounting portion 52b of the support carriages 52 of the casting roll carriage replacement device 50. At this time, the connection between the drive shafts 105a and 105b and the cooling water pipe 107 is automatically released.
Next, the new casting roll carriage 10C1 mounted on one carriage mounting portion 52a moves on the support table 52 so as to be disposed at the casting roll carriage replacement position P3B. That is, the guide rails 103C1, 104C1 on one carriage mounting portion 52a of the support base 52 move on the support base 52 so as to be linear with the second guide rail bodies 103B, 104B at the intermediate position P2 and the fourth guide rail bodies 103D, 104D at the transfer device retreat position P4. At this time, the casting roll carriage 10 to be replaced mounted on the other carriage mounting portion 52b of the support table 52 is positioned at the casting roll carriage retreat position P3C.
Next, the new casting roll carriage 10C1 is moved from the casting roll carriage replacement position P3B to the casting position P1 by the carriage moving device 80. At this time, the driving shafts 105a and 105b, the cooling water pipe 107, and the like are automatically connected. The fresh casting roll trolley 10C1 is held by the first holding device 20 in the casting roll axis direction at right angles to the horizontal direction, and the fresh casting roll trolley 10C1 is held by the second holding device 40 in the casting roll axis direction. Thus, the new casting roll carriage 10C1 is more accurately positioned at the casting position P1.
In this way, the replacement object casting roll carriage and the new casting roll carriage can be easily replaced.
Therefore, according to the present embodiment, the twin-roll continuous casting apparatus 100 includes the pair of casting rolls 1a and 1b having a cooling function and rotating in the mutual direction, and the casting roll carriage 10 mounted with the pair of casting rolls 1a and 1b and movable on the guide rails 103 and 104, and the guide rails 103 and 104 extend from the casting position P1 to the casting roll replacement position P3, so that the casting roll carriage 10 mounted with the pair of casting rolls 1a and 1b can move between the casting position P1 and the casting roll replacement position P3, and the pair of casting rolls 1a and 1b can be easily replaced. Since the casting roll carriage 10 is fixed in the casting roll axis direction by including the first fixing device 20 that presses the casting roll carriage 10 in the casting position P1 in the casting roll axis direction and fixes the casting roll carriage 10 in the casting roll axis direction, and the second fixing device 40 that presses the casting roll carriage 10 in the casting roll axis direction and fixes the casting roll carriage 10 in the casting roll axis direction, the casting roll carriage 10 can be fixed in the casting roll axis direction and the casting roll axis direction, and therefore, the pair of casting rolls 1a and 1b can be firmly supported at the correct positions. The first fixing device 10 and the second fixing device 40 can firmly fix the casting roll pallet 10 without a gap even if the dimension of the casting roll pallet 10 changes due to a temperature change during operation.
The first pressing device body 20A and the second pressing device body 20B provided in the first fixing device 20, and the second fixing device 40 are arranged at the correct position at the casting position P1 by applying a predetermined magnitude of thrust force to the casting roll carriage 10 even when the size of the equipment changes due to a temperature change, by providing the piston rods 21a, 41a of the hydraulic cylinders 21, 41 which advance and retreat by the supply and discharge of hydraulic oil, the hydraulic oil supply and discharge passages 31, 31 which supply and discharge hydraulic oil to and from the hydraulic cylinders 21, 41, and the relief valves 34, 34 which are provided in the hydraulic oil supply and discharge passages 31, 31 and suppress excessive pressure, respectively. That is, the pair of casting rolls 1a and 1b can be firmly supported at the correct positions.
Since the piston rods 21a of the first pressing device body 20A are disposed so as to face the bearing seats 2aa and 2ba in the width direction of the casting roll carriage 10 (the casting roll axis perpendicular horizontal direction), and the piston rods 21a of the second pressing device body 20B are disposed so as to face the bearing seats 2ab and 2bb in the width direction of the casting roll carriage 10 (the casting roll axis perpendicular horizontal direction), it is possible to suppress a decrease in the positioning accuracy of the casting rolls 1a and 1B.
By having the lateral protruding portions 15a, 15B, 16a, 16B provided on the side end portions 11C, 11d of the casting roll carriage 10, the lateral protruding portions 15a, 16a are disposed so as to face the piston rod 21a of the first pressing device body 20A, and the lateral protruding portions 15B, 16B are disposed so as to face the piston rod 21a of the second pressing device body 20B, and thus the amount of advance and retreat of the piston rod can be reduced compared to the case where these lateral protruding portions are not present.
The casting roll carriage changer 50 is provided with a support carriage 52 and a side shifter operating actuator 54, so that the carriage changer 50 itself has a simple configuration and can easily change the casting rolls 1a and 1b, the support carriage 52 has carriage mounting portions 52a and 52b on which two casting roll carriages can be mounted in parallel, and the side shifter operating actuator 54 moves the support carriage 52 at a position where the casting roll carriage 10 can be moved between one carriage mounting portion 52a of the support carriages 52 and the casting position P1 and at a position where the casting roll carriage 10 can be moved between the other carriage mounting portion 52b of the support carriages 52 and the casting position P1.
[ second embodiment ]
A twin-roll continuous casting apparatus according to a second embodiment of the present invention will be described with reference to fig. 6 to 9.
In the present embodiment, a third (vertical direction) fixing device is added to the twin-roll continuous casting apparatus according to the first embodiment shown in fig. 1. The other configurations are substantially the same as those of the above-described apparatuses shown in fig. 1 to 5, and the same devices are denoted by the same reference numerals, and redundant description thereof will be omitted as appropriate.
Fig. 6 shows a state in which the casting roll carriages are 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 carriages are fixed by the second fixing device at the casting position.
As shown in fig. 6 to 9, the twin-roll continuous casting apparatus 100A according to the present embodiment further includes a third fixing device 60. 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 disposed so that the piston rod 61a advances and retracts 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 disposed so that the piston rod 61a advances and retracts vertically downward. The first pressing device body 60A and the second pressing device body 60B are respectively provided with the same working oil supply and discharge device as the first pressing device body 20A.
Therefore, the pressing force F3A of the piston rod 61a of the first pressing device body 60A and the pressing force F3B of the piston rod 61a of the second pressing device body 60B are respectively adjusted to predetermined magnitudes. When the pressing force is excessive, the hydraulic oil (working fluid) is discharged through the safety valves of the hydraulic oil supply and discharge device provided in each of the first and second pressing device main bodies 60A and 60B, and the carriage main body 11 is pressed with an appropriate magnitude (predetermined magnitude).
The hydraulic cylinder 61 of the first pressing device body 60A is disposed adjacent to the side protruding portions 15a and 15b, respectively. The hydraulic cylinder 61 of the second pressing device body 60B is disposed adjacent to the side protruding portions 16a and 16B, respectively.
The twin-roll continuous casting apparatus 100A includes a casting roll carriage 10A, the casting roll carriage 10A is adjacent to wheels 13B, 14B, and the casting roll carriage 10A is provided with wheels 13c, 14c at side end portions 11c, 11d of a carriage body 11, respectively. That is, the casting roll carriage 10A has six wheels 13a, 13b, 14a, 14b, 14 c.
The first rail main body 103A of the rail 103 is provided with recessed portions 103Aa, 103Ab, and 103Ac corresponding to the wheels 13A, 13b, and 13 c. A recess (not shown) is provided in the first rail main body 104A of the rail 104 so as to correspond to the wheels 14A, 14b, and 14 c. Thus, when the casting roll carriage 10A is disposed at the casting position P1, the pads 19aa, 19ab, and 19ba on the carriage body 11 side ride over the pads 109aa, 109ab, and 109ba on the frame 101 side, as described in detail below. The pad 19bb provided on the carriage body 11 side is provided on a pad (not shown) on the vehicle body frame 101 side as it goes upward. Thereby, contact of the wheels 13A, 13b, 13c with the guide rail 103A is avoided, and contact of the wheels 14A, 14b, 14c with the guide rail 104A is avoided.
Pads 19aa and 19ab and pads 109aa and 109ab are provided on the lower surface portion of the carriage body 11 and the frame 101, respectively, so as to correspond to the lower side of the piston rod 61a of the hydraulic cylinder 61 of the first pressing device body 60A.
Pads 19ba and 19bb are provided on the lower surface of the carriage body 11 so as to correspond to the lower side of the piston rod 61a of the hydraulic cylinder 61 of the second pressing device body 60B. Further, the frame 101 is provided with a pad 109ba and a pad (not shown) corresponding to the pads 19ba and 19 bb.
Therefore, according to the twin-roll continuous casting apparatus 100A of the present embodiment, the third fixing device 60 is provided in addition to achieving the same operational effects as those of the twin-roll continuous casting apparatus 100 described above, so that the casting roll cart 10A can be accurately disposed even in the vertical direction at the casting position P1. This enables the casting rolls 1a and 1b to be firmly supported at more accurate positions.
The first and second pressing device bodies 60A and 60B of the third fixing device 60 are arranged at the casting position P1 by applying a predetermined magnitude of thrust force to the casting roll carriage 10A even when the size of the equipment changes due to a temperature change, and by having the piston rods 61A and 61A of the hydraulic cylinders 61 and 61 that advance and retreat by the supply and discharge of the hydraulic oil, the hydraulic oil supply and discharge passages 31 and 31 that supply and discharge the hydraulic oil to and from the hydraulic cylinders 61 and 61, and the relief valves 34 and 34 that are provided in the hydraulic oil supply and discharge passages 31 and suppress excessive pressure. That is, the pair of casting rolls 1a and 1b can be firmly supported at the correct positions.
Further, by supporting the casting roll carriage 10A at the casting position P1 with pads provided on the casting roll carriage 10A and the frame 101, respectively, the casting roll carriage 10A can be more accurately arranged in the vertical direction.
Further, the first rail main body 103A of the rail 103 has the concave portions 103Aa, 103Ab, 103Ac provided corresponding to the wheels 13A, 13B, 13c of the casting roll carriage 10A at the casting position P1, and the first rail main body 104A of the rail 104 has the concave portions provided corresponding to the wheels 14A, 14B, 14c of the casting roll carriage 10A at the casting position P1, whereby the casting roll carriage 10A can be further accurately arranged in the vertical direction.
The piston rods 61A, 61A of the first and second pressing device main bodies 60A, 60B are provided so as to press the widthwise outer sides of the bearing blocks 2aa, 2ba, 2ab, 2bb, respectively, thereby suppressing vertical movement of the casting roll truck 10A caused by rotation of the casting rolls 1A, 1B, and the like, and making the casting roll truck 10A strong in the vertical direction.
[ other embodiments ]
In the above description, the twin-roll continuous casting apparatus 100A in which 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 have the concave portions provided corresponding to the three wheels of the casting roll carriage 10A at the casting position P1 has been described, but the number of wheels and concave portions in the extending direction of the guide rails is not limited to three, and may be four or more.
Description of the symbols
1a, 1b casting rolls;
10 casting a roll trolley;
11a trolley main body;
13a, 13b wheels;
14a, 14b wheels;
15a, 15b side projections;
16a, 16b side projections;
20a first fixing device;
20A first pressing device body;
20B a second pressing device body;
30 working oil supply and discharge devices;
34 safety valve (overpressure suppression device);
40 a second securing means;
50 a trolley replacing device of the casting roller;
60a third fixing means;
60A first pressing device body;
60B a second pressing device body;
80 trolley moving means;
100. a 100A twin roll continuous casting apparatus;
103. 104 guide rails.
Claims (9)
1. A twin-roll continuous casting apparatus comprising a pair of casting rolls having a cooling function and rotating in a mutual direction, and a carriage on which the pair of casting rolls are mounted and which is provided so as to be movable on a guide rail extending from a casting position to a casting roll replacement position,
the disclosed device is provided with:
a first fixing device that fixes the carriage in a horizontal direction at right angles to the axes of the casting rolls by pressing the carriage in the horizontal direction at right angles to the axes of the casting rolls at the casting position; a second fixing device 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.
2. The twin roll continuous casting apparatus according to claim 1,
the first fixing device and the second fixing device are provided with a piston rod of a cylinder which advances and retreats by feeding and discharging of working fluid, a working fluid feeding and discharging passage which feeds and discharges the working fluid to and from the cylinder, and an excessive pressure suppressing device which is provided on the working fluid feeding and discharging passage and suppresses excessive pressure.
3. The twin roll continuous casting apparatus according to claim 2,
the pair of casting rolls are rotatably supported by bearings, and the piston rod of the first fixing device is disposed so as to face the bearings in the width direction of the carriage.
4. The twin roll continuous casting apparatus according to claim 3,
the lateral projection portion is provided on a side portion of the carriage and projects outward of the side portion of the carriage, and the lateral projection portion is disposed so as to face the piston rod of the first fixing device.
5. The twin roll continuous casting apparatus according to any one of claim 1, claim 2 and claim 4,
the carriage changer includes a support table having carriage-mounting portions on which two carriages can be mounted in parallel, and a support table moving device that moves the support table at a position between one of the carriage-mounting portions and the casting position where the carriage can be moved and at a position between the other of the carriage-mounting portions and the casting position where the carriage can be moved.
6. The twin roll continuous casting apparatus according to any one of claim 1, claim 2 and claim 4,
the carriage is pressed in the vertical direction by a third fixing device, and the carriage is fixed in the vertical direction by the third fixing device.
7. The twin roll continuous casting apparatus according to claim 6,
the third fixing device includes a piston rod of a cylinder that advances and retracts by supplying and discharging the working fluid, a working fluid supply and discharge passage that supplies and discharges the working fluid to and from the cylinder, and an excessive pressure suppressing device that is provided in the fluid pressure supply and discharge passage and suppresses an excessive pressure.
8. The twin roll continuous casting apparatus according to claim 6,
a liner is provided that supports the trolley at the casting position.
9. The twin roll continuous casting apparatus according to claim 8,
the carriage has three or more wheels in an extending direction of the rail, and the rail has a recess provided at the casting position in correspondence with the three or more wheels of the carriage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/112005 WO2018119549A1 (en) | 2016-12-26 | 2016-12-26 | Dual-roller continuous casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110099763A CN110099763A (en) | 2019-08-06 |
| CN110099763B true CN110099763B (en) | 2021-03-30 |
Family
ID=62707573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680091700.3A Active CN110099763B (en) | 2016-12-26 | 2016-12-26 | Twin roll type continuous casting apparatus |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3546089B1 (en) |
| JP (1) | JP6710340B2 (en) |
| CN (1) | CN110099763B (en) |
| RU (1) | RU2720515C1 (en) |
| WO (1) | WO2018119549A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11173528B2 (en) * | 2017-06-16 | 2021-11-16 | Primetals Technologies Japan, Ltd. | Roll changing device |
| CN111299529A (en) * | 2020-03-20 | 2020-06-19 | 上海二十冶建设有限公司 | Method for mounting ultrathin strip casting roller |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2020501914A (en) | 2020-01-23 |
| JP6710340B2 (en) | 2020-06-17 |
| CN110099763A (en) | 2019-08-06 |
| WO2018119549A1 (en) | 2018-07-05 |
| EP3546089B1 (en) | 2020-11-18 |
| EP3546089A4 (en) | 2019-11-06 |
| EP3546089A1 (en) | 2019-10-02 |
| RU2720515C1 (en) | 2020-04-30 |
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