Narrow-surface trapezoidal curved surface crystallizer

Abstract

The invention discloses a narrow trapezoid curved surface crystallizer, and mainly relates to the technical field of crystallizers. Comprising a bottom plate, two wide-face copper plates and two narrow-face copper plates, each narrow-face copper plate comprises an I-shaped block arranged on the bottom plate, the two ends of each I-shaped block are slidably connected with a left copper plate and a right copper plate respectively, and the side faces of the left copper plates and the side faces of the right copper plates are provided with copper plates which are in sliding contact with the two wide-face copper plates respectively. A working surface and a cooling surface which are in sliding contact with the I-shaped block are respectively arranged on two sides of the left copper plate and the right copper plate, two ends of the working surface respectively comprise a trapezoidal convex surface and a straight surface which are in contact with a casting blank, an inclined surface is arranged between the trapezoidal convex surface and the straight surface, and a movable plate is in sliding connection with the bottom plate. The method has the beneficial effects that the problem that after the medium-thickness plate is rolled, the allowance area needing to be cut is large is solved, the steel plate area influenced by edge linear crack defects is reduced, steel materials needed for rolling steel plates of the same size are reduced, and the utilization rate of the steel materials is increased.

Description

Technical Field

[0001] The invention relates to the technical field of crystallizers, in particular to a narrow trapezoidal curved surface crystallizer. Background Art

[0002] During the rolling process of medium and thick plates, there is a friction force in the tangential direction of the roll at the contact point between the roll and the edge of the slab. This friction force causes the edge of the slab to be flattened to the side. However, due to the fast heat transfer and low temperature at the corner of the rolled piece, the metal at the corner extends unevenly. During the side flattening deformation process, the edge of the steel plate is very likely to have edge linear crack defects (also known as "straight cracks on the edge", "edge cracks" and "black lines on the edge", etc.) that are longitudinally distributed on both sides of the plate rolling direction and have a width of 30 to 110 mm. It is often necessary to perform trimming to remove the black line defects on the edges of the finished rolled products, resulting in a great waste of steel materials. In order to remove this defect, steel companies often need to increase the unit weight of the continuous casting billet to increase the trimming allowance of the edge of the steel plate, or take the continuous casting billet off the line for corner flame cleaning, which seriously affects the quality of medium and thick plate products, yield rate and efficient energy utilization. Summary of the invention

[0003] The purpose of the present invention is to provide a narrow trapezoidal curved crystallizer to solve the problem of a large margin area that needs to be cut after rolling medium and thick plates, reduce the area of ​​the steel plate affected by edge linear crack defects, reduce the steel material required for rolling steel plates of the same size, and improve the utilization rate of steel materials.

[0004] In order to achieve the above-mentioned purpose, the invention is implemented through the following technical solutions:

[0005] A narrow trapezoidal curved crystallizer comprises a bottom plate, two wide copper plates respectively slidably arranged on both sides of the bottom plate and in contact with the ingot, and two narrow copper plates respectively arranged between the two narrow copper plates and in contact with both sides of the ingot, the narrow copper plates comprising I-shaped blocks respectively arranged on the bottom plate, the two ends of the I-shaped blocks being slidably connected with a left copper plate and a right copper plate, the side surfaces of the left copper plate and the right copper plate being respectively provided with working surfaces and cooling surfaces in sliding contact with the two wide copper plates; the two sides of the left copper plate and the right copper plate are respectively provided with working surfaces and cooling surfaces in sliding contact with the I-shaped blocks, the two ends of the working surfaces respectively comprising a trapezoidal convex surface and a flat surface in contact with the ingot, an inclined surface is provided between the trapezoidal convex surface and the flat surface, and a movable plate is slidably connected to the bottom plate.

[0006] Furthermore, a plurality of first water troughs and second water troughs are evenly distributed on the narrow copper plate, the first water troughs are arranged obliquely with respect to the cooling surface, and the second water troughs are arranged perpendicularly with respect to the cooling surface.

[0007] Furthermore, a swing arm is rotatably connected to the I-shaped block, and the ends of the left copper plate and the right copper plate are respectively rotatably connected to connecting blocks, and the ends of the two connecting blocks are respectively rotatably connected to the two ends of the swing arm.

[0008] Furthermore, it also includes a screw rod threadedly connected to the base plate, and a rotating shaft in contact with the end of the screw rod, the end of the I-block is provided with a T-slot, the end of the rotating shaft is provided with a T-block rotatably connected to the T-slot, both sides of the T-block are respectively in contact with the I-block, the end of the screw rod is provided with a spline sleeve, the end of the rotating shaft is slidably connected with an intermediate shaft, the intermediate shaft is slidably arranged in the spline sleeve, the spline sleeve and the rotating shaft are respectively provided with a plurality of grooves, the side of the intermediate shaft is provided with a plurality of protrusions in sliding contact with the grooves, and the swing arm is arranged on the rotating shaft.

[0009] Furthermore, a driven wheel is provided at the end of the screw rod, a plurality of arc grooves are provided on the driven wheel, a shifting groove is provided between two of the arc grooves, and a rotating motor is provided on the bottom plate, and a driving wheel is provided on the movable end of the rotating motor, the upper and lower sides of the driving wheel are respectively provided with shifting rods which contact the shifting grooves in turn, and the left and right sides of the driving wheel are respectively provided with arc blocks which contact the arc grooves.

[0010] Furthermore, the end of the intermediate shaft is provided with a slide plate slidably connected to the rotating shaft, and the two ends of the slide plate are respectively rotatably connected to the first connecting rod. It also includes a first cylinder arranged on the rotating shaft, and the movable end of the first cylinder is provided with a push block, and the two ends of the push block are respectively rotatably connected to the second connecting rod, and the end of the second connecting rod is rotatably connected to the first connecting rod. The rotating shaft is provided with a stop block that contacts the first connecting rod, and the stop block is perpendicularly arranged to the second connecting block.

[0011] Furthermore, a step is provided at the end of the rotating shaft, a bearing is sleeved on the outer side of the step, one side of the bearing is in contact with the step, a retaining ring is provided on the rotating shaft and in contact with the other side of the bearing, a fixing block is provided at the end of the screw and in contact with one side of the bearing, a first flange is provided on the fixing block, and the fixing block also includes a second flange connected to the first flange, and the second flange is in contact with the other side of the bearing.

[0012] Furthermore, one side of the left copper plate and the right copper plate is respectively provided with a movable block that is in sliding contact with the two wide-surface copper plates, one side of the wide-surface copper plate is provided with a horizontal block, the horizontal block is provided with a plurality of limit grooves, the movable block is provided with a second cylinder, the movable end of the second cylinder is provided with a limit block, and one side of the limit block is provided with a plurality of protrusions that are plugged into and cooperate with the limit grooves.

[0013] Furthermore, vertical plates are respectively provided on both sides of the bottom plate, a plurality of slide rails are provided on the vertical plates, and a plurality of sliding blocks slidably connected to the slide rails are provided on the side surfaces of the wide copper plate.

[0014] Furthermore, the end surface of the I-shaped block is provided with an inclined surface.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When rolling steel plates, the working area is formed by the working surfaces of the left and right copper plates, the end surface of the I-shaped block, the top surface of the movable plate, and the side surface of the wide copper plate, which is used to fix the shape of the molten steel, thereby obtaining a billet with trapezoidal notches on both sides. After rough rolling and fine rolling, the thickness of the billet is continuously reduced until a steel plate that meets the requirements of industrial production and application is formed;

[0017] In the process of rolling thinning, the ingot with notches on both sides and a nearly right-angled corner structure prepared by the trapezoidal curved surface crystallizer can significantly reduce the width of the wide edge line cracks in the rolling of wide and thick plates, while ensuring the high-temperature over-straightening of the corners of the ingot in the second cooling zone, and controlling the generation of cracks in the corners of the ingot to the greatest extent; at the same time, the steel plate rolled by the narrow trapezoidal curved surface crystallizer, due to the notches on both sides, further reduces the area of ​​the steel plate affected by the edge linear crack defects, and after cutting the trimming allowance of the same width, it will greatly reduce the waste of steel materials in rolling the same size of steel plates, and improve the utilization rate of steel materials;

[0018] In addition, the left copper plate and the right copper plate have a continuous and smooth transition from the trapezoidal convex surface at the middle end to the straight surface at both ends, which avoids the problem of easy leakage of steel in the solidified shell due to the small span or the lack of smooth transition caused by the additional trapezoidal convex surface and the straight surface.

[0019] 2. The bearing is fixed at the end of the shaft through the cooperation among the shaft, bearing, step and snap ring, so as to avoid the bearing from moving on the shaft, thereby improving the stability of the overall structure, ensuring the smooth rolling of the steel plate, and improving the rolling efficiency of the steel plate; then, the screw and the shaft are connected through the cooperation among the shaft, screw, bearing, fixed block, first flange and second flange, so that when the screw moves on the bottom, it drives the shaft to move together, and then drives the I-shaped block to slide on the bottom plate, driving the left copper plate and the right copper plate to move together, changing the length of the ingot formed after the molten steel is cooled, and different sizes of steel plates can be produced without changing the crystallizer model, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost required for crystallizer manufacturing;

[0020] 3. When the width and length of the crystallizer need to be adjusted at the same time, the intermediate shaft is driven to slide on the rotating shaft through the cooperation among the cylinder, the push block, the rotating shaft, the first connecting rod and the second connecting rod, until the protrusion provided on the side of the intermediate shaft enters into the groove provided on the spline sleeve, so that the protrusion on the intermediate shaft is in contact with the grooves provided on the rotating shaft and the spline sleeve at the same time. At this time, the screw is rotated on the bottom plate, which will drive the rotating shaft to rotate with the screw, and through the cooperation among the rotating shaft, the swing arm, the connecting block, the left copper plate and the right copper plate, the left copper plate and the right copper plate will be driven to move on the I-shaped block at the same time, thereby driving the two wide copper plates to slide on the bottom plate, changing the width of the ingot formed by cooling the molten steel. At the same time, in the process of the rotation of the bottom plate, the screw is threadedly connected to the bottom plate, which will drive the screw to move on the bottom plate, and Through the cooperation among the screw, the rotating shaft, the T-block, the T-slot and the I-block, the I-block is driven to slide on the bottom plate, thereby changing the length of the ingot formed by cooling the molten steel, and then forming ingots of different external dimensions. There is no need to change the model of the crystallizer, and steel plates of different sizes can be produced, thereby improving the efficiency of continuous rolling of steel plates. At the same time, there is no need to set up a separate power device to drive the swing arm and the screw to rotate separately, thereby reducing the space required for the installation of the power device and the manufacturing cost. In addition, the abutment block is in vertical contact with the second connecting block. When an external force acts on the intermediate shaft, it is transmitted to the abutment block through the second connecting rod and is offset by the abutment block, thereby preventing the external force from accidentally driving the intermediate shaft to move relative to the rotating shaft, thereby improving the stability of the overall structure, ensuring the smooth rolling of the steel plate, and improving the efficiency of steel plate rolling.

[0021] After the width of the crystallizer is adjusted, when the length of the crystallizer needs to be adjusted separately, the cylinder, the push block, the rotating shaft, the second connecting rod and the first connecting rod are used to drive the intermediate shaft to slide on the rotating shaft until the protrusion provided on the intermediate shaft slides out of the groove provided on the spline sleeve, thereby releasing the connection between the intermediate shaft and the screw rod, so that the screw rod and the rotating shaft can rotate relative to each other. At this time, after the screw rod is rotated on the bottom plate, it will drive the screw rod to move on the bottom plate, and through the contact between the screw rod and the rotating shaft, drive the I-shaped block to move on the bottom plate, but no longer drive the rotating shaft to rotate with the screw rod, thereby only changing the length of the ingot formed by cooling the molten steel, and prefabricating ingots of different external dimensions;

[0022] 4. When it is necessary to drive the screw to rotate on the bottom plate, the driven wheel is driven to rotate on the bottom plate through the cooperation between the rotating motor, the driving wheel, the bottom plate, the arc block, the arc groove, the lever and the groove, so as to drive the screw to rotate on the bottom plate, thereby changing the positions of the wide copper plate, the left copper plate and the right copper plate to form ingots of different external dimensions, and different sizes of steel plates can be produced without changing the crystallizer model, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost of manufacturing the crystallizer. In addition, each time the driven wheel is driven to rotate a certain angle, the arc block will re-enter the arc groove, and the resistance generated by the contact between the arc block and the arc groove will limit the rotation of the driven wheel on the bottom plate, thereby preventing the external force from accidentally driving the screw to rotate, changing the positions of the wide copper plate, the left copper plate and the right copper plate, resulting in changes in the size of the ingot formed by cooling the molten steel, and affecting the quality of the steel plate after rolling;

[0023] 5. After adjusting the positions of the wide copper plate, the left copper plate and the right copper plate each time, the protrusion at the end of the limit block is driven into the limit groove through the cooperation between the second cylinder, the limit block and the movable block. The resistance generated by the contact between the protrusion and the limit groove will limit the movement of the movable block relative to the wide copper plate, thereby offsetting the force exerted by the molten steel on the left copper plate and the right copper plate, avoiding external force from accidentally driving the left copper plate and the right copper plate to move, affecting the shape of the ingot formed after the molten steel is cooled, and thus improving the quality of the steel plate after rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 It is a schematic diagram of the structure of the wide copper plate and the narrow copper plate of the present invention.

[0025] Attached Figure 2 It is a structural schematic diagram of the I-shaped block of the present invention.

[0026] Attached Figure 3 It is a schematic structural diagram of the cooperation between the left copper plate and the right copper plate of the present invention.

[0027] Attached Figure 4 It is a structural schematic diagram of the screw of the present invention.

[0028] Attached Figure 5 It is a schematic structural diagram of the intermediate shaft of the present invention.

[0029] Attached Figure 6 It is a schematic diagram of the structure of the screw, the intermediate shaft and the rotating shaft of the present invention.

[0030] Attached Figure 7 The present invention is attached Figure 2 A partial enlarged view of area A in the middle.

[0031] Attached Figure 8 The present invention is attached Figure 3 A partial enlarged view of area B in the middle.

[0032] Attached Fig. 9 The present invention is attached Figure 4 A partial enlarged view of area C in the middle.

[0033] Numbers shown in the accompanying drawings:

[0034] 1. Bottom plate; 2. Ingot; 3. Wide copper plate; 4. Narrow copper plate; 5. I-shaped block; 6. Left copper plate; 7. Right copper plate; 8. Working surface; 9. Cooling surface; 10. Trapezoidal convex surface; 11. Flat surface; 12. Inclined surface; 13. Movable plate;

[0035] 14. The first water tank; 15. The second water tank;

[0036] 16. Swing arm; 17. Connecting block; 18. Screw rod; 19. Rotating shaft; 20. T-slot; 21. T-block; 22. Spline sleeve; 23. Intermediate shaft; 24. Groove; 25. Protrusion;

[0037] 26, driven wheel; 27, arc groove; 28, shifting groove; 29, rotating motor; 30, driving wheel; 31, shifting rod; 32, arc block; 33, slide plate; 34, first connecting rod; 35, first cylinder; 36, push block; 37, second connecting rod; 38, stop block;

[0038] 39. Step; 40. Bearing; 41. Snap ring; 42. Fixing block; 43. First flange; 44. Second flange;

[0039] 45. movable block; 46. horizontal block; 47. limiting groove; 48. second cylinder; 49. limiting block; 50. protrusion; 51. vertical plate; 52. slide rail; 53. slide block; 54. inclined surface. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0041] The present invention provides a narrow trapezoidal curved surface crystallizer, such as Figure 1-3As shown, it comprises a bottom plate 1, two wide copper plates 3 respectively slidably arranged on both sides of the bottom plate 1 and in contact with the ingot 2, and two narrow copper plates 4 respectively arranged between two narrow copper plates 4 and in contact with both sides of the ingot 2, wherein the narrow copper plates 4 comprise an I-shaped block 5 slidably arranged on the bottom plate 1, and the two ends of the I-shaped block 5 are respectively slidably connected with a left copper plate 6 and a right copper plate 7, and the sides of the left copper plate 6 and the right copper plate 7 are respectively provided with sliding contacts with the two wide copper plates 3; the two sides of the left copper plate 6 and the right copper plate 7 are respectively provided with working surfaces 8 slidably contacting with the I-shaped block 5 and cooling surface 9, the two ends of the working surface 8 respectively include a trapezoidal convex surface 10 and a flat surface 11 in contact with the ingot 2, and an inclined surface 12 is provided between the trapezoidal convex surface 10 and the flat surface 11. When rolling the steel plate, the working surface 8 of the left copper plate 6 and the right copper plate 7, the end surface of the I-shaped block 5, the top surface of the movable plate 13, and the side surface of the wide copper plate 3 form a working area for fixing the shape of the molten steel, thereby obtaining the ingot 2 with trapezoidal notches on both sides, and through rough rolling and fine rolling, the thickness of the ingot 2 is continuously reduced until a steel plate that meets the requirements of industrial production and application is formed;

[0042] In the process of rolling and thinning, the ingot 2 with notches on both sides and a nearly right-angled corner structure prepared by a trapezoidal curved surface crystallizer can significantly reduce the width of the wide edge line cracks in the wide and thick plate rolling, while ensuring that the ingot 2 is straightened at the corner in the second cooling zone at high temperature, and controlling the cracks at the corners of the ingot 2 to the greatest extent; at the same time, the steel plate rolled by the narrow-faced trapezoidal curved surface crystallizer, due to the notches on both sides, further reduces the area of ​​the steel plate affected by the edge linear crack defects, and after cutting the trimming margin of the same width, it will greatly reduce the waste of steel materials in rolling the same size of steel plates, and improve the utilization rate of steel materials; in addition, the left copper plate 6 and the right copper plate 7 have a continuous and smooth transition from the trapezoidal convex surface 10 at the middle end to the inclined surface 12 to the straight surface 11 at both ends, so that the working surface 8 transitions continuously and smoothly, avoiding the problem of easy leakage of steel in the solidified ingot shell due to the problem of too small span or no smooth transition caused by the additionally set trapezoidal convex surface 10 and the straight surface 11;

[0043] When the size of the ingot 2 to be produced changes, two I-shaped blocks 5 are symmetrically slid on the bottom plate 1, driving the left copper plate 6 and the right copper plate 7 to slide on the bottom plate 1 along with the I-shaped blocks 5, thereby changing the length of the ingot 2 formed by cooling the molten steel; the left copper plate 6 and the right copper plate 7 slide on the I-shaped block 5, because one side of the left copper plate 6 and the right copper plate 7 are respectively in sliding contact with the two wide copper plates 3, driving the two wide copper plates 3 to slide on the bottom plate 1, thereby changing the width of the ingot 2 formed by cooling the molten steel, and then forming ingots 2 of different sizes, and through rough rolling and fine rolling, the thickness of the ingot 2 is continuously thinned to form steel plates of different external dimensions, and steel plates of different sizes can be produced without changing the crystallizer model, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost required for crystallizer manufacturing;

[0044] The bottom plate 1 is slidably connected with a movable plate 13, and the cooled ingot 2 in the crystallizer is knocked by sliding the movable plate 13 to facilitate its subsequent detachment from the crystallizer, thereby improving the efficiency of steel plate rolling.

[0045] Preferably, Figure 3 and Figure 4 As shown, a plurality of first water troughs 14 and second water troughs 15 are evenly distributed on the narrow copper plate 4, wherein the first water troughs 14 are inclined to the cooling surface 9, and the second water troughs 15 are perpendicular to the cooling surface 9. The heat transferred from the molten steel to the narrow copper plate 4 is taken away by the water flowing in the first water troughs 14 and the second water troughs 15, thereby accelerating the cooling of the molten steel and accelerating the efficiency of forming the ingot 2. Specifically, the first water troughs 14 and the cooling surface 9 form an angle of 70° to 80°, and the second water troughs 15 are arranged perpendicular to the cooling surface 9. The spacing between adjacent first water troughs 14 is in the range of 10 to 20 mm, and the roots of the first water troughs 14 and the second water troughs 15 are 20 to 25 mm away from the working surface 8.

[0046] Preferably, Figure 4 As shown, the I-shaped block 5 is rotatably connected with a swing arm 16, and the ends of the left copper plate 6 and the right copper plate 7 are rotatably connected with connecting blocks 17 respectively. The ends of the two connecting blocks 17 are rotatably connected with the two ends of the swing arm 16 respectively. The swing arm 16 rotates on the I-shaped block 5, driving one end of the two connecting blocks 17 to rotate with the swing arm 16. Since the other ends of the two connecting blocks 17 are rotatably connected with the ends of the left copper plate 6 and the right copper plate 7 respectively, the left copper plate 6 and the right copper plate 7 will be driven to move on the I-shaped block 5 at the same time, thereby driving the two wide copper plates 3 to slide on the bottom plate 1, changing the width of the ingot 2 formed by cooling the molten steel, and then forming ingots 2 of different widths. After rough rolling and fine rolling, the thickness of the ingot 2 is continuously thinned to form steel plates of different widths. There is no need to change the crystallizer model to produce steel plates of different sizes, thereby improving the efficiency of continuous rolling of steel plates. In addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost required for crystallizer manufacturing.

[0047] Preferably, Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, it also includes a screw 18 threadedly connected to the base plate 1, and a rotating shaft 19 in contact with the end of the screw 18, the end of the I-shaped block 5 is provided with a T-shaped slot 20, the end of the rotating shaft 19 is provided with a T-shaped block 21 rotatably connected to the T-shaped slot 20, and the two sides of the T-shaped block 21 are respectively in contact with the I-shaped block 5, the end of the screw 18 is provided with a spline sleeve 22, the end of the rotating shaft 19 is slidably connected with an intermediate shaft 23, and the intermediate shaft 23 is slidably set in the spline sleeve 22, and the spline sleeve 22 and the rotating shaft 19 are respectively provided with a plurality of grooves 24. The side of the intermediate shaft 23 is provided with a plurality of protrusions 25 that are in sliding contact with the groove 24. The swing arm 16 is provided on the rotating shaft 19. Specifically, the swing arm 16 is provided on the rotating shaft 19 through a connecting key, so that when the rotating shaft 19 rotates, the swing arm 16 is driven to rotate together; when it is necessary to adjust the width and length at the same time, the intermediate shaft 23 provided at the end of the rotating shaft 19 slides toward one side of the screw rod 18 until the protrusion 25 provided on the intermediate shaft 23 enters into the groove 24 provided on the spline sleeve 22, so that the protrusion 25 on the intermediate shaft 23 is simultaneously in contact with the protrusions provided on the rotating shaft 19 and the spline sleeve 22. The groove 24 is in contact with the bottom plate 1. At this time, if the screw 18 is rotated on the bottom plate 1, the torque generated by the rotation of the screw 18 will be transmitted to the rotating shaft 19 through the intermediate shaft 23, so that the rotating shaft 19 rotates with the screw 18, thereby driving the swing arm 16 set on the rotating shaft 19 to rotate together, and driving the two wide copper plates 3 to slide on the bottom plate 1, changing the width of the ingot 2 formed by the cooling of the molten steel. At the same time, during the rotation of the bottom plate 1, the screw 18 is threadedly connected to the bottom plate 1, which will drive the screw 18 to move on the bottom plate 1, and through the end of the screw 18 and the end of the rotating shaft 19 The two sides of the T-block 21 are in contact with each other, driving the rotating shaft 19 to slide along with the screw 18, and then the two sides of the T-block 21 are respectively in contact with the I-block 5, driving the I-block 5 to slide on the bottom plate 1, thereby changing the length of the ingot 2 formed by cooling the molten steel, and then forming ingots 2 with different external dimensions, and through rough rolling and fine rolling, the thickness of the ingot 2 is continuously thinned to form steel plates with different external dimensions, and there is no need to change the crystallizer model to produce steel plates of different sizes, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost required for manufacturing the crystallizer.

[0048] Preferably, Figure 4 and Fig. 9As shown, a driven wheel 26 is provided at the end of the screw rod 18, and a plurality of arc grooves 27 are provided on the driven wheel 26, and a shifting groove 28 is provided between two of the arc grooves 27. The screw rod 18 also includes a rotating motor 29 arranged on the bottom plate 1, and a driving wheel 30 arranged on the movable end of the rotating motor 29. The upper and lower sides of the driving wheel 30 are respectively provided with shifting rods 31 which contact with the shifting grooves 28 in turn, and the left and right sides of the driving wheel 30 are respectively provided with arc blocks 32 which contact with the arc grooves 27. The driving wheel 30 is driven to rotate on the bottom plate 1 by the rotating motor 29, so that one of the arc blocks 32 slides out of the arc groove 27, and the restriction on the rotation of the driven wheel 26 on the bottom plate 1 is released. Then, the shifting rod 31 contacts with the shifting groove 28, and the component force generated after the contact drives the driven wheel 26 to rotate on the bottom plate 1. , thereby driving the screw 18 to rotate on the bottom plate 1, thereby changing the positions of the wide copper plate 3, the left copper plate 6 and the right copper plate 7, forming ingots 2 of different external dimensions, and there is no need to change the crystallizer model to produce steel plates of different sizes, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost of manufacturing the crystallizer. In addition, each time the driven wheel 26 is driven to rotate a certain angle, the arc block 32 will re-enter the arc groove 27, and the resistance generated by the contact between the arc block 32 and the arc groove 27 will limit the rotation of the driven wheel 26 on the bottom plate 1, thereby preventing external force from accidentally driving the screw 18 to rotate, changing the positions of the wide copper plate 3, the left copper plate 6 and the right copper plate 7, resulting in changes in the size of the ingot 2 formed by cooling the molten steel, thereby affecting the quality of the steel plate after rolling.

[0049] Preferably, Figure 3 and Figure 4As shown, the end of the intermediate shaft 23 is provided with a slide plate 33 which is slidably connected to the rotating shaft 19, and the two ends of the slide plate 33 are respectively rotatably connected to the first connecting rod 34. It also includes a first cylinder 35 arranged on the rotating shaft 19, and the movable end of the first cylinder 35 is provided with a push block 36, and the two ends of the push block 36 are respectively rotatably connected to the second connecting rod 37, and the end of the second connecting rod 37 is rotatably connected to the first connecting rod 34. The rotating shaft 19 is provided with a stop block 38 which contacts the first connecting rod 34, and the stop block 38 is vertically arranged with the second connecting block 17. In the initial state, the stop block 38 is vertically in contact with the second connecting block 17. When external force acts on the intermediate shaft 23, it is transmitted to the stop block 38 through the second connecting rod 37 and is offset by the stop block 38 to avoid unintentional external force. The intermediate shaft 23 is driven to move relative to the rotating shaft 19. When the position of the intermediate shaft 23 needs to be changed, the first cylinder 35 is retracted to drive the push block 36 to slide on the rotating shaft 19. Since the two ends of the second connecting rod 37 are rotatably connected to the first connecting rod 34 and the push block 36 respectively, a pulling force is applied inward to one end of the two first connecting rods 34 until the first connecting rod 34 is parallel to the second connecting rod 37. Subsequently, the pulling force is transmitted through the first connecting rod 34 and the second connecting rod 37 to drive the intermediate shaft 23 to slide on the rotating shaft 19 until the protrusion 25 provided on the intermediate shaft 23 slides out of the groove 24 provided on the spline sleeve 22, thereby releasing the connection between the intermediate shaft 23 and the screw 18, so that the screw 18 and the rotating shaft 19 can rotate relative to each other, thereby only changing the length of the ingot 2 formed by cooling the molten steel.

[0050] Preferably, Figure 5As shown, a step 39 is provided at the end of the rotating shaft 19, and a bearing 40 is sleeved on the outer side of the step 39. One side of the bearing 40 is in contact with the step 39. A retaining ring 41 in contact with the other side of the bearing 40 is provided on the rotating shaft 19. The retaining ring 41 and the step 39 are in contact with the two sides of the bearing 40 respectively, so that the bearing 40 is fixed to the end of the rotating shaft 19, and the bearing 40 is prevented from moving on the rotating shaft 19, thereby improving the stability of the overall structure, ensuring the smooth rolling of the steel plate, and improving the rolling efficiency of the steel plate; a fixing block 42 in contact with one side of the bearing 40 is provided at the end of the screw rod 18, and a first flange 43 is provided on the fixing block 42, and also includes a second flange 44 connected to the first flange 43, and the second flange 44 is in contact with the other side of the bearing 40. The bearing 40 is fixed to the end of the rotating shaft 19 Finally, align the end of the rotating shaft 19 with the end of the screw 18, then slide the bearing 40 into the fixed block 42 provided at the end of the screw 18, and then connect the first flange 43 and the second flange 44 by bolts and nuts, so that the second flange 44 contacts the other side of the bearing 40, and then connect the screw 18 and the rotating shaft 19, so that when the screw 18 moves on the bottom, it drives the rotating shaft 19 to move together, and then drives the I-shaped block 5 to slide on the bottom plate 1, driving the left copper plate 6 and the right copper plate 7 to move together, changing the length of the ingot 2 formed after the molten steel is cooled, and there is no need to change the crystallizer model, so that steel plates of different sizes can be produced, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, which reduces the cost required for crystallizer manufacturing; at the same time, due to the presence of the bearing 40, the screw 18 and the rotating shaft 19 can rotate relative to each other.

[0051] Preferably, Figure 3 and Figure 8 As shown, one side of the left copper plate 6 and the right copper plate 7 is respectively provided with a movable block 45 that is in sliding contact with the two wide copper plates 3, one side of the wide copper plate 3 is provided with a cross block 46, and the cross block 46 is provided with a plurality of limit grooves 47, and the movable block 45 is provided with a second cylinder 48, and the movable end of the second cylinder 48 is provided with a limit block 49, and one side of the limit block 49 is provided with a plurality of protrusions 50 that are plugged into the limit grooves 47. The limit block 49 is driven by the second cylinder 48 to slide on the movable block 45, so that the protrusion 50 provided at the end of the limit block 49 enters the limit groove 47, and the resistance generated by the contact between the protrusion 50 and the limit groove 47 will limit the movement of the movable block 45 relative to the wide copper plate 3, thereby offsetting the force exerted by the molten steel on the left copper plate 6 and the right copper plate 7, avoiding the external force from accidentally driving the left copper plate 6 and the right copper plate 7 to move, affecting the shape of the ingot 2 formed after the molten steel is cooled, and thereby improving the quality of the steel plate after rolling.

[0052] Preferably, Figure 2 and Figure 3As shown, vertical plates 51 are respectively provided on both sides of the bottom plate 1, and a plurality of slide rails 52 are provided on the vertical plates 51. The side surfaces of the wide copper plate 3 are provided with a plurality of sliders 53 slidably connected to the slide rails 52, which play a guiding role for the wide copper plate 3 to slide on the bottom plate 1.

[0053] Preferably, Figure 2 and Figure 3 As shown, the end face of the I-shaped block 5 is provided with an inclined surface 54, so that the end face of the I-shaped block 5 is in a continuous state with the left copper plate 6 and the right copper plate 7, thereby avoiding the problem of easy steel leakage in the solidified shell due to the problem of small span or lack of smooth transition caused by the additional I-shaped block 5.

[0054] Example 1

[0055] The present invention provides a narrow trapezoidal curved surface crystallizer, such as Figure 1-3 As shown, when rolling the steel plate, the working surface 8 of the left copper plate 6 and the right copper plate 7, the end surface of the I-shaped block 5, the top surface of the movable plate 13, and the side surface of the wide copper plate 3 form a working area for fixing the shape of the molten steel, thereby obtaining a casting slab 2 with trapezoidal notches on both sides, and through rough rolling and fine rolling, the thickness of the casting slab 2 is continuously reduced until a steel plate that meets the requirements of industrial production and application is formed;

[0056] In addition, during the rolling and thinning process, the ingot 2 with notches on both sides and a nearly right-angled corner structure prepared by the trapezoidal curved surface crystallizer can significantly reduce the width of the wide edge line cracks in the wide and thick plate rolling, while ensuring that the ingot 2 is straightened at the corner in the second cooling zone at high temperature, and controlling the generation of cracks at the corner of the ingot 2 to the greatest extent; at the same time, the steel plate rolled by the narrow trapezoidal curved surface crystallizer, due to the notches on both sides, further reduces the area of ​​the steel plate affected by the edge linear crack defects, and after cutting the trimming allowance of the same width, it will greatly reduce the waste of steel materials in rolling the same size of steel plates, thereby improving the utilization rate of steel materials;

[0057] In addition, the left copper plate 6 and the right copper plate 7 have a continuous and smooth transition from the trapezoidal convex surface 10 at the middle end to the inclined surface 12 to the flat surface 11 at both ends, thereby avoiding the problem of easy leakage of steel from the solidified shell due to the small span or the lack of smooth transition caused by the additionally set trapezoidal convex surface 10 and the flat surface 11;

[0058] When the size of the ingot 2 to be produced changes, two I-blocks 5 are symmetrically slid on the bottom plate 1, driving the left copper plate 6 and the right copper plate 7 to slide on the bottom plate 1 along with the I-blocks 5, thereby changing the length of the ingot 2 formed by cooling the molten steel; the left copper plate 6 and the right copper plate 7 slide on the I-block 5, because one side of the left copper plate 6 and the right copper plate 7 are respectively in sliding contact with the two wide copper plates 3, driving the two wide copper plates 3 to slide on the bottom plate 1, thereby changing the width of the ingot 2 formed by cooling the molten steel, and then forming ingots 2 of different sizes, and through rough rolling and fine rolling, the thickness of the ingot 2 is continuously thinned to form steel plates of different external dimensions, and steel plates of different sizes can be produced without changing the crystallizer model, thereby improving the efficiency of continuous rolling of steel plates; in addition, there is no need to manufacture crystallizers of different sizes, thereby reducing the cost required for crystallizer manufacturing.

[0059] Example 2

[0060] On the basis of Example 1, Figure 4 and Figure 5 As shown, the shaft 19 is passed through the bearing 40 until one side of the bearing 40 contacts the step 39 provided at the end of the shaft 19, and then a snap ring 41 is provided on the shaft 19 so that the snap ring 41 contacts the other side of the bearing 40, and the snap ring 41 and the step 39 contact the two sides of the bearing 40 respectively, so as to fix the bearing 40 at the end of the shaft 19, and prevent the bearing 40 from moving on the shaft 19, thereby improving the stability of the overall structure, ensuring the smooth rolling of the steel plate, and improving the rolling efficiency of the steel plate; then the end of the shaft 19 is aligned with the end of the screw 18, and then the bearing 40 is slid into the fixing block 42 provided at the end of the screw 18, and the screw 18 is fixed by bolts and nuts. The first flange 43 and the second flange 44 are connected so that the second flange 44 contacts the other side of the bearing 40, and then the screw 18 and the rotating shaft 19 are connected, so that when the screw 18 moves on the bottom, it drives the rotating shaft 19 to move together, and then drives the I-shaped block 5 to slide on the bottom plate 1, and drives the left copper plate 6 and the right copper plate 7 to move together, so as to change the length of the ingot 2 formed after the molten steel is cooled. There is no need to change the crystallizer model, and steel plates of different sizes can be produced, thereby improving the efficiency of continuous rolling of steel plates. In addition, there is no need to manufacture crystallizers of different sizes, which reduces the cost required for crystallizer manufacturing. At the same time, due to the presence of the bearing 40, the screw 18 and the rotating shaft 19 can rotate relative to each other.

[0061] Example 3

[0062] On the basis of Example 2, Figure 4-Figure 7As shown in the figure, when it is necessary to adjust the width and length of the crystallizer at the same time, the push block 36 is driven to slide on the rotating shaft 19 by extending the movable end of the cylinder, and the component force is transmitted through the first connecting rod 34 and the second connecting rod 37 to drive the intermediate shaft 23 to slide on the rotating shaft 19 until the protrusion 25 provided on the side of the intermediate shaft 23 enters the groove 24 provided on the spline sleeve 22, so that the protrusion 25 on the intermediate shaft 23 is in contact with the rotating shaft 19 and the groove 24 provided on the spline sleeve 22 at the same time. At this time, by rotating the screw on the bottom plate 1 The torque generated by the rotation of the rod 18 and the screw 18 will be transmitted to the rotating shaft 19 through the intermediate shaft 23, so that the rotating shaft 19 rotates with the screw 18, thereby driving the swing arm 16 set on the rotating shaft 19 to rotate together, so that one end of the two connecting blocks 17 rotates with the swing arm 16. Since the other ends of the two connecting blocks 17 are respectively rotatably connected to the ends of the left copper plate 6 and the right copper plate 7, the left copper plate 6 and the right copper plate 7 will be driven to move on the I-shaped block 5 at the same time, thereby driving the two wide copper plates 3 to slide on the bottom plate 1, changing the steel The width of the ingot 2 is formed by water cooling. At the same time, during the rotation of the bottom plate 1, the screw 18 is threadedly connected to the bottom plate 1, which drives the screw 18 to move on the bottom plate 1, and the end of the screw 18 contacts the end of the shaft 19, driving the shaft 19 to slide with the screw 18, and then contacts the I-shaped block 5 on both sides of the T-block 21, driving the I-shaped block 5 to slide on the bottom plate 1, thereby changing the length of the ingot 2 formed by the cooling of the molten steel, and then forming ingots 2 of different external dimensions without the need to change the size of the ingot. By changing the crystallizer model, steel plates of different sizes can be produced, which improves the efficiency of continuous rolling of steel plates. At the same time, there is no need to set up a separate power device to drive the swing arm 16 and the screw rod 18 to rotate separately, thereby reducing the space required for the installation of the power device and the manufacturing cost. In addition, the stop block 38 is in vertical contact with the second connecting block 17. When an external force acts on the intermediate shaft 23, it is transmitted to the stop block 38 through the second connecting rod 37 and offset by the stop block 38, thereby preventing the external force from accidentally driving the intermediate shaft 23 to move relative to the rotating shaft 19.

[0063] After the width of the crystallizer is adjusted, when the length of the crystallizer needs to be adjusted separately, the movable end of the cylinder is retracted to drive the push block 36 to slide on the rotating shaft 19. Since the two ends of the second connecting rod 37 are rotatably connected to the first connecting rod 34 and the push block 36 respectively, a pulling force is applied to one end of the two first connecting rods 34 toward the inside until the first connecting rod 34 is parallel to the second connecting rod 37. Subsequently, the pulling force is transmitted through the first connecting rod 34 and the second connecting rod 37 to drive the intermediate shaft 23 to slide on the rotating shaft 19. The intermediate shaft 23 is moved until the protrusion 25 provided on the intermediate shaft 23 slides out of the groove 24 provided on the spline sleeve 22, thereby releasing the connection between the intermediate shaft 23 and the screw 18, so that the screw 18 and the rotating shaft 19 can rotate relative to each other. At this time, after the screw 18 is rotated on the base plate 1, the screw 18 will be driven to move on the base plate 1, and through the contact between the screw 18 and the rotating shaft 19, the I-shaped block 5 will be driven to move on the base plate 1, but the rotating shaft 19 will no longer be driven to rotate with the screw 18, thereby only changing the length of the ingot 2 formed by cooling the molten steel.

[0064] Example 4

[0065] On the basis of Example 3, Figure 4 and Fig. 9 As shown in the figure, when it is necessary to drive the screw 18 to rotate on the bottom plate 1, the driving wheel 30 is driven to rotate on the bottom plate 1 by the rotating motor 29, so that one of the arc blocks 32 slides out of the arc groove 27, and the restriction on the rotation of the driven wheel 26 on the bottom plate 1 is released. Then, the lever 31 contacts the groove 28, and the component force generated after the contact drives the driven wheel 26 to rotate on the bottom plate 1, thereby driving the screw 18 to rotate on the bottom plate 1, thereby changing the positions of the wide copper plate 3, the left copper plate 6 and the right copper plate 7, forming ingots 2 with different external dimensions, and different sizes can be obtained without changing the crystallizer model. In addition, there is no need to manufacture crystallizers of different sizes, which reduces the cost of crystallizer manufacturing. In addition, each time the driven wheel 26 is driven to rotate a certain angle, the arc block 32 will re-enter the arc groove 27. The resistance generated by the contact between the arc block 32 and the arc groove 27 will limit the rotation of the driven wheel 26 on the bottom plate 1, thereby preventing external force from accidentally driving the screw 18 to rotate, changing the positions of the wide copper plate 3, the left copper plate 6 and the right copper plate 7, resulting in changes in the size of the ingot 2 formed by cooling the molten steel, and affecting the quality of the steel plate after rolling.

[0066] Example 5

[0067] On the basis of Example 3, Figure 3 and Figure 8As shown, each time the positions of the wide copper plate 3, the left copper plate 6 and the right copper plate 7 are adjusted, the second cylinder 48 drives the limit block 49 to slide on the movable block 45, so that the protrusion 50 provided at the end of the limit block 49 enters the limit groove 47. The resistance generated by the contact between the protrusion 50 and the limit groove 47 will limit the movement of the movable block 45 relative to the wide copper plate 3, thereby offsetting the force exerted by the molten steel on the left copper plate 6 and the right copper plate 7, avoiding external force from accidentally driving the left copper plate 6 and the right copper plate 7 to move, affecting the shape of the ingot 2 formed after the molten steel is cooled, thereby improving the quality of the steel plate after rolling.

Claims

1. A narrow trapezoidal curved crystallizer, comprising a bottom plate (1), two wide copper plates (3) respectively slidably arranged on both sides of the bottom plate (1) and in contact with a casting billet (2), and two narrow copper plates (4) arranged between the two narrow copper plates (4) and respectively in contact with both sides of the casting billet (2), characterized in that: The narrow copper plate (4) comprises an I-shaped block (5) slidably arranged on the bottom plate (1), the two ends of the I-shaped block (5) are respectively slidably connected with a left copper plate (6) and a right copper plate (7), and the side surfaces of the left copper plate (6) and the right copper plate (7) are respectively provided with sliding contacts with two wide copper plates (3); the two sides of the left copper plate (6) and the right copper plate (7) are respectively provided with a working surface (8) and a cooling surface (9) slidably contacting with the I-shaped block (5), the two ends of the working surface (8) respectively comprise a trapezoidal convex surface (10) and a flat surface (11) in contact with the ingot (2), an inclined surface (12) is provided between the trapezoidal convex surface (10) and the flat surface (11), and a movable plate (13) is slidably connected to the bottom plate (1).

2. A narrow trapezoidal curved surface crystallizer according to claim 1, characterized in that: A plurality of first water grooves (14) and second water grooves (15) are evenly distributed on the narrow copper plate (4); the first water grooves (14) are arranged obliquely with respect to the cooling surface (9); and the second water grooves (15) are arranged perpendicularly with respect to the cooling surface (9).

3. The narrow trapezoidal curved surface crystallizer according to claim 1, characterized in that: The I-shaped block (5) is rotatably connected to a swing arm (16), the ends of the left copper plate (6) and the right copper plate (7) are respectively rotatably connected to connecting blocks (17), and the ends of the two connecting blocks (17) are respectively rotatably connected to the two ends of the swing arm (16).

4. A narrow trapezoidal curved surface crystallizer according to claim 3, characterized in that: The invention also comprises a screw rod (18) threadedly connected to the bottom plate (1), and a rotating shaft (19) in contact with the end of the screw rod (18); a T-shaped slot (20) is provided at the end of the I-shaped block (5); a T-shaped block (21) rotatably connected to the T-shaped slot (20) is provided at the end of the rotating shaft (19); both sides of the T-shaped block (21) are in contact with the I-shaped block (5) respectively; a spline sleeve (22) is provided at the end of the screw rod (18); an intermediate shaft (23) is slidably connected to the end of the rotating shaft (19); the intermediate shaft (23) is slidably arranged in the spline sleeve (22); a plurality of grooves (24) are respectively provided on the spline sleeve (22) and the rotating shaft (19); a plurality of protrusions (25) slidably contacting the grooves (24) are provided on the side of the intermediate shaft (23); and the swing arm (16) is arranged on the rotating shaft (19).

5. The narrow trapezoidal curved surface crystallizer according to claim 4, characterized in that: The end of the screw rod (18) is provided with a driven wheel (26), the driven wheel (26) is provided with a plurality of arc grooves (27), a shifting groove (28) is provided between two of the arc grooves (27), and the invention also includes a rotary motor (29) arranged on the bottom plate (1), and a driving wheel (30) arranged on the movable end of the rotary motor (29), the upper and lower sides of the driving wheel (30) are respectively provided with shifting rods (31) which contact the shifting grooves (28) in turn, and the left and right sides of the driving wheel (30) are respectively provided with arc blocks (32) which contact the arc grooves (27).

6. The narrow trapezoidal curved surface crystallizer according to claim 4, characterized in that: The end of the intermediate shaft (23) is provided with a slide plate (33) slidably connected to the rotating shaft (19), and the two ends of the slide plate (33) are respectively rotatably connected to the first connecting rod (34). It also includes a first cylinder (35) arranged on the rotating shaft (19), and the movable end of the first cylinder (35) is provided with a push block (36), and the two ends of the push block (36) are respectively rotatably connected to the second connecting rod (37), and the end of the second connecting rod (37) is rotatably connected to the first connecting rod (34). The rotating shaft (19) is provided with a stop block (38) in contact with the first connecting rod (34), and the stop block (38) is arranged perpendicular to the second connecting block (17).

7. The narrow trapezoidal curved surface crystallizer according to claim 4, characterized in that: The end of the rotating shaft (19) is provided with a step (39), the outer side of the step (39) is sleeved with a bearing (40), one side of the bearing (40) is in contact with the step (39), the rotating shaft (19) is provided with a retaining ring (41) in contact with the other side of the bearing (40), the end of the screw rod (18) is provided with a fixing block (42) in contact with one side of the bearing (40), the fixing block (42) is provided with a first flange (43), and also includes a second flange (44) connected to the first flange (43), and the second flange (44) is in contact with the other side of the bearing (40).

8. The narrow trapezoidal curved surface crystallizer according to claim 1, characterized in that: One side of the left copper plate (6) and the right copper plate (7) is respectively provided with a movable block (45) that is in sliding contact with the two wide copper plates (3); one side of the wide copper plate (3) is provided with a transverse block (46); the transverse block (46) is provided with a plurality of limit grooves (47); the movable block (45) is provided with a second cylinder (48); a movable end of the second cylinder (48) is provided with a limit block (49); one side of the limit block (49) is provided with a plurality of protrusions (50) that are plugged into and matched with the limit grooves (47).

9. The narrow trapezoidal curved surface crystallizer according to claim 1, characterized in that: Vertical plates (51) are respectively provided on both sides of the bottom plate (1), a plurality of slide rails (52) are provided on the vertical plates (51), and a plurality of sliding blocks (53) slidably connected to the slide rails (52) are provided on the side surfaces of the wide copper plate (3).

10. The narrow trapezoidal curved surface crystallizer according to claim 1, characterized in that: The end surface of the I-shaped block (5) is provided with an inclined surface (54).

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