A flame cutting device for a continuous-casting width-adjusted billet

Abstract

The application discloses a continuous casting width-adjusted billet flame cutting device and relates to the technical field of continuous casting billet cutting.The device comprises a supporting part, an adjusting part and a flame cutting machine.The supporting part comprises a lower groove body, a pair of adjusting plates and a supporting plate.The adjusting part comprises a lifting cylinder, a plurality of adjusting rods, a supporting rod, a shifting rod, a rotating cylinder, a hydraulic rod one and a hydraulic rod two.The lower groove body is provided with a height adjusting assembly outside for adjusting the height of the lifting cylinder.The lifting cylinder is provided with an angle adjusting assembly on one side for simultaneously controlling the rotation angle of a plurality of rotating cylinders.The hydraulic rod one and the hydraulic rod two can drive the shifting rod, the shifting rod can drive the plurality of adjusting rods to move, the hydraulic rod one and the hydraulic rod two are simultaneously or respectively controlled to extend or retract, the shifting rod can be synchronously moved to adjust the center position of the billet or can be non-synchronously moved to correct the placing angle of the billet, and the problem that the large billet is difficult to be adjusted by manual operation after being hoisted and placed in an inaccurate position is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of continuous casting billet cutting technology, specifically to a flame cutting device for continuously casting adjustable-width billets. Background Technology

[0002] Continuous casting is the mainstream process in modern steel production. Molten steel is continuously poured into a water-cooled copper mold (crystallizer). The outer shell solidifies rapidly, while the still-liquid steel core is gradually pulled out and completely solidifies in the subsequent cooling section. Finally, it is cut into steel billets of a certain length (such as square billets, steel billets, rectangular billets, etc.). Continuous casting width adjustment refers to the dynamic and continuous adjustment of the width of the crystallizer during the continuous casting production process without stopping the machine, thereby producing sections of different widths on a continuous steel billet. The final steel billet produced is called "width-adjusted steel billet". However, the beveled edges on both sides of the width-adjusted steel billet need to be cut off before it can be sold.

[0003] For example, the patent with announcement number CN222429204U discloses a CNC double flame continuous casting adjustable width hot steel billet cutting machine, which includes a pair of slide rails, a heavy-duty cutting table fixedly arranged between the pair of slide rails, a CNC flame cutting machine slidably arranged on the pair of slide rails, and a laser emitter arranged on one side of the slide rails. Activating the laser emitter can generate two parallel rays on the steel billet.

[0004] However, widened steel billets require a crane to be placed on the cutting table during cutting. Using a crane makes it difficult to precisely adjust the billet's position. Sometimes, the billet tilts or shifts off-center after being placed on the worktable. Existing cutting devices cannot adjust the billet's position, and given the billet's large size, manual adjustment is also impossible. During cutting, the actual position of the billet must first be measured and input into the CNC system to set the torch's movement trajectory, enabling cutting of both sides of the billet. Existing technology requires setting the cutting torch's movement trajectory for each cut, significantly reducing work efficiency. Therefore, providing a cutting device that facilitates billet position adjustment is a technical problem urgently needing to be solved by those skilled in the art. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a flame cutting device for continuously cast steel billets with adjustable width, which solves the problems of difficult positioning of steel billets after loading, low adjustment efficiency, and reduced cutting efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a flame cutting device for continuously cast steel billets with adjustable width, comprising a support part, an adjustment part, and a flame cutting machine;

[0007] The support includes a lower tank body, in which a pair of adjusting plates are slidably arranged along its width direction. Each of the pair of adjusting plates is fixedly provided with multiple support plates evenly distributed along its length direction. The lower tank body is provided with a spacing adjustment component for controlling the spacing between the pair of adjusting plates.

[0008] The adjustment unit includes a lifting cylinder, multiple adjusting rods, and a lever. The lifting cylinder is slidably installed in the lower groove along the height direction. Multiple pairs of coaxial rotating cylinders are rotatably installed on the two side walls of the lifting cylinder through mounting holes. Multiple adjusting rods slide in the multiple pairs of rotating cylinders along the width direction of the lifting cylinder. The support plate is placed in the gap between two adjacent adjusting rods. Multiple support rods are fixedly installed on each adjusting rod. A connecting fork is rotatably connected to one end of each adjusting rod. A pin is fixedly installed in the connecting fork. A sliding opening is opened on the lever along its length direction. The pin slides in the sliding opening. Hydraulic rod one and hydraulic rod two are fixedly installed on the outer sides of both ends of the lifting cylinder, respectively. One end of the lever is rotatably connected to the telescopic end of hydraulic rod one. A pin is fixedly installed on the telescopic end of hydraulic rod two. A sliding opening is opened on the other end of the lever. The pin slides in the sliding opening.

[0009] A height adjustment assembly for adjusting the height of the lifting cylinder is installed on the outer side of the lower tank. When the support rod is above the adjusting rod and the lifting cylinder is at its highest point, the upper end face of the support rod is higher than the upper end face of the support plate. At this time, the steel billet is supported by the support rod. When the lifting cylinder is at its lowest point, the upper end face of the support rod is lower than the upper end face of the support plate. At this time, the steel billet is supported by the support plate.

[0010] An angle adjustment component is provided on one side of the lifting cylinder to simultaneously control the rotation angle of multiple pairs of rotating cylinders. The support rod is moved above or below the adjustment rod by controlling the rotating cylinder to rotate 180 degrees through the angle adjustment component.

[0011] A pair of slide rails are fixedly installed on the upper sides of the lifting cylinder, and the flame cutter slides on the pair of slide rails.

[0012] Preferably, the spacing adjustment component includes a pull rod and multiple pairs of connecting rods. A guide bar is fixedly installed inside the lower tank. The pull rod slides on the guide bar. The multiple pairs of connecting rods are arranged in a figure-eight shape and are evenly distributed along the length of the pull rod. One end of the multiple pairs of connecting rods is hinged to the upper surface of the pull rod, and the other end of the multiple pairs of connecting rods is hinged to a fixed shaft on the upper surface of a pair of adjustment plates. An electric telescopic rod is fixedly installed on the outer side of one end of the lower tank. One end of the pull rod extends to the outer side of the lower tank and is fixedly connected to the telescopic end of the electric telescopic rod.

[0013] Preferably, the angle adjustment component includes a rotating shaft, which is rotatably mounted on one outer surface of the lifting cylinder. Multiple worm gears are fixedly installed on the rotating shaft corresponding to multiple mounting holes. A worm wheel is fixedly installed on the outer side of the rotating cylinder near the rotating shaft, and the worm wheel meshes with the worm gear. A motor that drives the rotating shaft to rotate is also fixedly installed at one end of the lifting cylinder.

[0014] Preferably, multiple limiting grooves are provided on both sides of the lower tank, and multiple limiting blocks are fixedly provided on both sides of the outer wall of the lifting cylinder, with the multiple limiting blocks sliding in the multiple limiting grooves.

[0015] Preferably, the height adjustment component includes a pair of slide rods, which are slidably disposed on both sides of the lower tank. Multiple wedges are fixedly disposed on the slide rods corresponding to multiple limiting slots. A rotating wheel is rotatably connected to the outer side of the limiting block, and the rotating wheel contacts the upper surface of the wedge. A crossbar is fixedly connected to one end of the pair of slide rods. A hydraulic rod three is fixedly disposed on the outer side of the other end of the lower tank. The telescopic end of the hydraulic rod three is fixedly connected to the crossbar.

[0016] Preferably, one end of the lower tank body has an opening, and one end of each pair of adjusting plates is fixedly provided with an extension platform. The extension platform extends through the opening to the outside of the lower tank body. A laser emitter is fixedly provided on the extension platform located on the outside of the lower tank body by a vertical rod. The laser emitted by the laser emitter can illuminate the steel billet and display two parallel rays.

[0017] Preferably, the laser beam emitted by the laser emitter is located on the outer side of the support plate.

[0018] Preferably, a guard plate is fixedly installed between a pair of rotating cylinders, so that when the support rod rotates to below the adjusting rod, the guard plate can cover the adjusting rod and the support rod.

[0019] Beneficial effects

[0020] This invention provides a flame cutting device for continuously cast steel billets with adjustable width, which has the following beneficial effects:

[0021] Hydraulic rods one and two can drive the lever, which in turn can move multiple adjusting rods. By controlling the extension and retraction of hydraulic rods one and two simultaneously or separately, the lever can move synchronously to adjust the center position of the billet, or move asynchronously to correct the placement angle of the billet. This effectively solves the problem of inaccurate placement of large billets after hoisting and the difficulty in manual adjustment. Multiple adjusting rods and multiple support rods can provide stable support for the billet.

[0022] By projecting a laser beam onto the steel billet in line with the cutting torch trajectory using a laser emitter, operators can intuitively refer to the laser line to quickly complete the initial positioning of the steel billet without the need for tedious manual measurement and CNC system trajectory reset. This is especially suitable for batch cutting of steel billets of the same specifications, improving the efficiency of batch operations.

[0023] By changing the spacing between a pair of adjustment plates, it is possible to adapt to the cutting needs of steel billets of different widths. At the same time, the support plate is always located inside the cutting area, avoiding damage to the support plate by the cutting flame.

[0024] The worm gear mechanism drives the adjusting rod to rotate 180°, which can rotate the support rod downwards. At the same time, the guard plate covers it, effectively preventing the hot molten iron dripping during cutting from adhering to the support rod and adjusting rod and forming iron scars. This ensures the flexibility of the moving parts and the reliability of long-term use. Attached Figure Description

[0025] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

[0026] Figure 2 The three-dimensional representation of the present invention Figure 2 ;

[0027] Figure 3 This is an exploded view of the present invention.

[0028] Figure 4 This is a top view of the present invention;

[0029] Figure 5 for Figure 4 Sectional view of AA;

[0030] Figure 6 for Figure 4 Sectional view of BB;

[0031] Figure 7 This is a cross-sectional perspective view of the present invention;

[0032] Figure 8 A 3D view of the adjusting rod;

[0033] Figure 9 This is a 3D view of a laser emitter.

[0034] In the diagram: 1. Lower tank; 2. Adjusting plate; 3. Support plate; 4. Lifting cylinder; 5. Mounting hole; 6. Rotary cylinder; 7. Adjusting rod; 8. Support rod; 9. Connecting fork; 10. Pin shaft one; 11. Lever; 12. Slide opening one; 13. Hydraulic rod one; 14. Hydraulic rod two; 15. Pin shaft two; 16. Slide opening two; 17. Slide rail; 18. Flame cutter; 19. Cutting torch; 20. Worm gear; 21. Rotating shaft; 22. Worm; 23. Motor; 24. Limiting groove; 25. Limiting block; 26. Rotating wheel; 27. Slide rod; 28. Wedge block; 29. ​​Crossbar; 30. Hydraulic rod three; 31. Guide bar; 32. Pull rod; 33. Connecting rod; 34. Fixed shaft; 35. Electric telescopic rod; 36. Opening; 37. Extension table; 38. Vertical pole; 39. Laser emitter; 40. Protective plate. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] Please see Figures 1-9 The present invention provides a technical solution: a flame cutting device for continuously cast steel billets with adjustable width, comprising a support part, an adjustment part, and a flame cutting machine 18;

[0037] The support section is used to support the steel billet during cutting; please refer to [link / reference]. Figure 3 , Figure 5 The device includes a lower trough 1, in which a pair of adjusting plates 2 are slidably arranged along its width direction. Each pair of adjusting plates 2 is fixedly provided with multiple support plates 3 evenly distributed along its length direction. The lower trough 1 is provided with a spacing adjustment component for controlling the spacing between the pair of adjusting plates 2. By changing the spacing between the pair of adjusting plates 2, steel billets of different widths can be supported. At the same time, by changing the position of the adjusting plates 2, the support plates 3 can be misaligned with the cutting area to avoid damage to the support plates 3 by the cutting flame.

[0038] The adjusting section is used to adjust the position of the steel billet. Please refer to [link / reference]. Figure 3 , Figure 4 , Figure 5 , Figure 8 The system includes a lifting cylinder 4, multiple adjusting rods 7, and a lever 11. The lifting cylinder 4 is slidably mounted in the lower trough 1 along the height direction. Multiple pairs of coaxially mounted rotating cylinders 6 are rotatably mounted on the two side walls of the lifting cylinder 4 through mounting holes 5. The multiple adjusting rods 7 slide within the multiple pairs of rotating cylinders 6 along the width direction of the lifting cylinder 4. A support plate 3 is placed in the gap between two adjacent adjusting rods 7. Multiple support rods 8 are fixedly mounted on each adjusting rod 7. A connecting fork 9 is rotatably connected to one end of each adjusting rod 7. A pin 10 is fixedly mounted inside the connecting fork 9. A sliding opening 12 is opened on the lever 11 along its length direction. The pin 10 slides within the sliding opening 12, forming a sliding connection between the connecting fork 9 and the lever 11. Hydraulic rod 13 and hydraulic rod 2 14 are fixedly installed on the outer sides of both ends of the lifting cylinder 4. One end of the lever 11 is rotatably connected to the telescopic end of hydraulic rod 13. A pin 2 15 is fixedly installed on the telescopic end of hydraulic rod 2 14. The other end of the lever 11 is provided with a sliding opening 2 16. The pin 2 15 slides in the sliding opening 2 16. The parallelism and spacing between the lever 11 and the lifting cylinder 4 can be changed by hydraulic rod 13 and hydraulic rod 2 14. When the lever 11 moves, it can drive multiple adjusting rods 7 to move laterally in the rotating cylinder 6, thereby causing multiple adjusting rods 7 to move simultaneously. When the billet is placed on the upper end of the support rod 8, the position of the billet is finely adjusted by the movement of multiple adjusting rods 7.

[0039] Please see Figure 1 , Figure 2 , Figure 3The lower tank 1 is provided with a height adjustment component for adjusting the height of the lifting cylinder 4. When the support rod 8 is above the adjustment rod 7 and the lifting cylinder 4 is at the highest point, the upper end face of the support rod 8 is higher than the upper end face of the support plate 3. At this time, the steel billet is supported by the support rod 8. When the lifting cylinder 4 is at the lowest point, the upper end face of the support rod 8 is lower than the upper end face of the support plate 3. At this time, the steel billet is supported by the support plate 3.

[0040] Please see Figure 2 , Figure 3 An angle adjustment component is provided on one side of the lifting cylinder 4 to simultaneously control the rotation angle of multiple pairs of rotating cylinders 6. The rotating cylinder 6 is rotated 180 degrees by the angle adjustment component to move the support rod 8 above or below the adjusting rod 7. When the support rod 8 needs to support the steel billet, the support rod 8 is moved above the adjusting rod 7 and the lifting cylinder 4 is controlled to rise. When cutting the steel billet, the lifting cylinder 4 is controlled to lower and the support rod 8 is rotated below the adjusting rod 7 to prevent molten iron from dripping onto the upper surface of the support rod 8 during cutting and to prevent a height difference between multiple support rods 8.

[0041] Please see Figure 1 , Figure 2 , Figure 3 A pair of slide rails 17 are fixedly installed on the upper sides of the lifting cylinder 4. The flame cutter 18 slides on the pair of slide rails 17. The flame cutter 18 moves along the slide rails 17 and cuts the two sides of the steel billet by spraying cutting flames through two cutting torches 19.

[0042] As an embodiment of the present invention, please refer to Figure 3 , Figure 5 The spacing adjustment component includes a pull rod 32 and multiple pairs of connecting rods 33. A guide bar 31 is fixedly installed inside the lower trough 1. The pull rod 32 slides on the guide bar 31, which restricts the movement trajectory of the pull rod 32. The multiple pairs of connecting rods 33 are arranged in a figure-eight shape and are evenly distributed along the length of the pull rod 32. One end of the multiple pairs of connecting rods 33 is hinged to the upper surface of the pull rod 32, and the other end of the multiple pairs of connecting rods 33 is hinged to the fixed shaft 34 on the upper surface of a pair of adjusting plates 2. An electric telescopic rod 35 is fixedly installed on the outer side of one end of the lower trough 1. One end of the pull rod 32 extends to the outer side of the lower trough 1 and is fixedly connected to the telescopic end of the electric telescopic rod 35. The electric telescopic rod 35 can drive the pull rod 32 to move. When the pull rod 32 moves, it pulls the pair of adjusting plates 2 through the connecting rods 33 to move them closer or further apart, thereby adjusting the spacing of the support plates 3 on the pair of adjusting plates 2 to match the width of the billet.

[0043] As an embodiment of the present invention, please refer to Figure 2 , Figure 3 , Figure 7The angle adjustment assembly includes a rotating shaft 21, which is rotatably mounted on the outer surface of one side of the lifting cylinder 4. Multiple worm gears 22 are fixedly installed on the rotating shaft 21 corresponding to multiple mounting holes 5. A worm wheel 20 is fixedly installed on the outer side of the rotating cylinder 6 near the rotating shaft 21. The worm wheel 20 meshes with the worm gears 22. A motor 23 that drives the rotating shaft 21 to rotate is also fixedly installed at one end of the lifting cylinder 4. When the motor 23 drives the rotating shaft 21 to rotate, it can cause the worm gears 22 to rotate. The worm gears 22 mesh with the worm wheel 20 to drive the rotating cylinder 6 to rotate. The rotating cylinder 6 drives the adjusting rod 7 to rotate 180 degrees, so that the support rod 8 can be rotated above or below the adjusting rod 7. Since the worm wheel and worm gear have a self-locking property, the adjusting rod 7 can only be rotated when the motor 23 is started. In addition, one end of the adjusting rod 7 is rotatably connected to the connecting fork 9. While ensuring that the adjusting rod 7 can be moved laterally inside the rotating cylinder 6 by the lever 11, the adjusting rod 7 can also rotate freely.

[0044] As an embodiment of the present invention, please refer to Figure 3 Multiple limiting grooves 24 are provided on both sides of the lower tank 1, and multiple limiting blocks 25 are fixedly provided on both sides of the outer wall of the lifting cylinder 4. The multiple limiting blocks 25 slide in the multiple limiting grooves 24 to ensure the movement trajectory of the lifting cylinder 4.

[0045] Please see Figure 2 , Figure 3 , Figure 4 Furthermore, the height adjustment assembly includes a pair of slide rods 27, which are slidably disposed on both sides below the lower tank body 1. Multiple wedges 28 are fixedly disposed on the slide rods 27 corresponding to multiple limiting grooves 24. A rotating wheel 26 is rotatably connected to the outer side of each limiting block 25, and the rotating wheel 26 contacts the upper surface of the wedge 28. A crossbar 29 is fixedly connected to one end of the pair of slide rods 27. A hydraulic rod 30 is fixedly disposed on the outer side of the other end of the lower tank body 1. The telescopic end of the hydraulic rod 30 is fixedly connected to the crossbar 29, and the adjustment is achieved by hydraulic... The lever 30 pushes the crossbar 29 to move a pair of sliding rods 27 simultaneously. When the sliding rods 27 move, the wedges 28 above them move simultaneously. When the wedges 28 move, they can push the rotating wheel 26 to rise or fall, thereby realizing the up and down movement of the lifting cylinder 4. By setting a pair of sliding rods 27 and multiple wedges 28 on each sliding rod 27, the force on the lifting cylinder 4 can be more even, ensuring that the lifting cylinder 4 rises or falls in a horizontal state and improving stability. By setting the rotating wheel 26, the resistance when the wedges 28 move can be reduced.

[0046] As an embodiment of the present invention, please refer to Figure 2 , Figure 3 , Figure 9An opening 36 is provided at one end of the lower tank body 1. An extension platform 37 is fixedly provided at one end of each pair of adjustment plates 2. The extension platform 37 extends through the opening 36 to the outside of the lower tank body 1. A laser emitter 39 is fixedly provided on the extension platform 37 located on the outside of the lower tank body 1 by means of a vertical rod 38. The laser emitted by the laser emitter 39 can illuminate the steel billet and display two parallel rays. The light can provide a reference when adjusting the position of the steel billet, and can also be used as a cutting line to facilitate determining the position for cutting the steel billet.

[0047] For further details, please refer to Figure 6 The laser emitter 39 emits light on the outside of the support plate 3. When the cutting torch 19 is vertically aligned with the emitted light, the cutting torch 19 will also be on the outside of the support plate 3. Therefore, by adjusting the cutting torch 19 to be vertically aligned with the light on the billet during cutting, the cutting flame can be avoided from damaging the support plate 3.

[0048] As an embodiment of the present invention, please refer to Figure 7 , Figure 8 A guard plate 40 is fixedly installed between a pair of rotating drums 6. When the support rod 8 rotates to the bottom of the adjusting rod 7, the guard plate 40 can cover the adjusting rod 7 and the support rod 8 to prevent molten iron from dripping onto the adjusting rod 7 and forming iron marks, and to ensure that the adjusting rod 7 can move smoothly inside the rotating drum 6.

[0049] The flame cutting machine 18 used in this invention is a conventional technology, and its specific structure is common knowledge to those skilled in the art, so it will not be described in detail here.

[0050] Working principle and usage process of this invention:

[0051] S1. Adjust the distance between the two adjustment plates 2 according to the cutting width of the steel billet to ensure that the steel billet can still be placed on the support plate 3 after cutting. Start the laser emitter 39 to emit two parallel lasers. The position where the laser beams irradiate the steel billet is the actual cutting position. Since the support plate 3 is located inside the two laser lines, it can avoid damage to the support plate 3 by the cutting flame during cutting.

[0052] S2. Adjust the positions of the two torches 19 on the flame cutting machine 18 according to the cutting width of the steel billet. At this time, the torches 19 and the laser beam can be vertically aligned.

[0053] S3. Start motor 23 to rotate support rod 8 above adjustment rod 7, start hydraulic rod 30 to move one end of wedge block 28 to below turn wheel 26, so that lifting cylinder 4 rises to the highest point. At this time, the upper end of support rod 8 is higher than support plate 3. Place steel billet on support rod 8 by crane.

[0054] S4. When adjusting the position of the billet, the operator uses an external hydraulic station to control the extension and retraction of hydraulic rods 13 and 14. When hydraulic rod 13 or 14 moves individually, lever 11 tilts, driving multiple adjusting rods 7 to move. Each adjusting rod 7 can then move unequal distances, thus adjusting the parallelism between the billet and the device. When hydraulic rods 13 and 14 move simultaneously, multiple adjusting rods 7 move simultaneously, allowing the billet to move laterally within the device, moving it to the center of the device. During adjustment, the operator can refer to the laser beams on the billet until the billet is moved so that the two laser beams can illuminate it. Figure 4 The position of the billet), the movement path of the laser beam (i.e., the cutting torch 19), and the setting of multiple adjusting rods 7 and multiple support rods 8 above each adjusting rod 7 can make the billet be subjected to uniform force and reduce the deformation of the billet.

[0055] S5. Start the hydraulic rod 30 to move one end of the wedge 28 to below the rotating wheel 26, so that the lifting cylinder 4 is lowered to the lowest point. After the lifting cylinder 4 is lowered, the upper end of the support plate 3 is higher than the support rod 8. At this time, the steel billet is supported by the support plate 3.

[0056] S6. Control hydraulic rod 13 and hydraulic rod 2 14 to reset, and restore the adjusting rod 7 to its initial state.

[0057] S7. Start motor 23 to rotate shaft 21, and rotate support rod 8 to below adjusting rod 7 (e.g., Figure 7 As shown in the figure, at this time, the guard plate 40 moves above the adjusting rod 7 and the support rod 8 to prevent the molten iron from dripping onto the end faces of the adjusting rod 7 and the support rod 8 during cutting, thereby protecting the adjusting rod 7 and the support rod 8.

[0058] S8. Ignite the cutting torch 19, preheat the steel billet, and adjust it to the cutting flame. The steel billet is cut by moving the flame cutting machine 18 on the slide rail 17.

[0059] S9. When cutting in batches, if the specifications of the steel billet to be cut are the same as those of the previous steel billet, there is no need to adjust the position of the adjusting plate 2 and the cutting torch 19. Just repeat the above steps S3-S8.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flame cutting device for continuously cast steel billets with adjustable width, characterized in that, Includes a support unit, an adjustment unit, and a flame cutter (18); The support includes a lower groove (1), and a pair of adjusting plates (2) are slidably arranged in the lower groove (1) along its width direction. Multiple support plates (3) are fixedly arranged on each pair of adjusting plates (2) along their length direction. A spacing adjustment component for controlling the spacing between the pair of adjusting plates (2) is provided in the lower groove (1). The adjustment unit includes a lifting cylinder (4), multiple adjusting rods (7), and a lever (11). The lifting cylinder (4) is slidably disposed in the lower groove (1) along the height direction. Multiple pairs of coaxially mounted rotating cylinders (6) are rotatably disposed on both sides of the lifting cylinder (4) through mounting holes (5). The multiple adjusting rods (7) slide in the multiple pairs of rotating cylinders (6) along the width direction of the lifting cylinder (4). The support plate (3) is placed in the gap between two adjacent adjusting rods (7). Multiple support rods (8) are fixedly disposed on each adjusting rod (7). One end of each adjusting rod (7) is rotatably connected to a connecting fork (9). A pin (10) is fixedly installed inside the connecting fork (9). A sliding opening (12) is opened on the lever (11) along its length direction. The pin (10) slides in the sliding opening (12). A hydraulic rod (13) and a hydraulic rod (2) are fixedly installed on the outer sides of both ends of the lifting cylinder (4). One end of the lever (11) is rotatably connected to the telescopic end of the hydraulic rod (13). A pin (2) is fixedly installed on the telescopic end of the hydraulic rod (2) (14). A sliding opening (16) is opened on the other end of the lever (11). The pin (2) (15) slides in the sliding opening (16). A height adjustment assembly for adjusting the height of the lifting cylinder (4) is provided on the outside of the lower tank body (1). When the support rod (8) is above the adjusting rod (7) and the lifting cylinder (4) is at its highest point, the upper end face of the support rod (8) is higher than the upper end face of the support plate (3). At this time, the steel billet is supported by the support rod (8). When the lifting cylinder (4) is at its lowest point, the upper end face of the support rod (8) is lower than the upper end face of the support plate (3). At this time, the steel billet is supported by the support plate (3). An angle adjustment component is provided on one side of the lifting cylinder (4) for simultaneously controlling the rotation angle of multiple pairs of rotating cylinders (6). The rotating cylinder (6) is rotated 180 degrees by the angle adjustment component to move the support rod (8) above or below the adjustment rod (7). A pair of slide rails (17) are fixedly installed on the upper sides of the lifting cylinder (4), and the flame cutter (18) slides on the pair of slide rails (17).

2. The flame cutting device for continuously cast steel billets with adjustable width according to claim 1, characterized in that, The spacing adjustment assembly includes a pull rod (32) and multiple pairs of connecting rods (33). A guide bar (31) is fixedly installed inside the lower tank (1). The pull rod (32) slides on the guide bar (31). The multiple pairs of connecting rods (33) are arranged in a figure-eight shape and are evenly distributed along the length of the pull rod (32). One end of the multiple pairs of connecting rods (33) is hinged to the upper surface of the pull rod (32), and the other end of the multiple pairs of connecting rods (33) is hinged to the fixed shaft (34) on the upper surface of a pair of adjustment plates (2). An electric telescopic rod (35) is fixedly installed on the outer side of one end of the lower tank (1). One end of the pull rod (32) extends to the outer side of the lower tank (1) and is fixedly connected to the telescopic end of the electric telescopic rod (35).

3. The flame cutting device for continuously cast steel billets with adjustable width according to claim 1, characterized in that, The angle adjustment assembly includes a rotating shaft (21), which is rotatably mounted on the outer surface of one side of the lifting cylinder (4). Multiple worm gears (22) are fixedly installed on the rotating shaft (21) corresponding to multiple mounting holes (5). A worm wheel (20) is fixedly installed on the outer side of the rotating cylinder (6) near the rotating shaft (21). The worm wheel (20) meshes with the worm gear (22). A motor (23) that drives the rotating shaft (21) to rotate is also fixedly installed at one end of the lifting cylinder (4).

4. The flame cutting device for continuously cast steel billets with adjustable width according to claim 1, characterized in that, Multiple limiting grooves (24) are provided on both sides of the lower tank (1), and multiple limiting blocks (25) are fixedly provided on both sides of the outer wall of the lifting cylinder (4). The multiple limiting blocks (25) slide in the multiple limiting grooves (24).

5. The flame cutting device for continuously cast steel billets with adjustable width according to claim 4, characterized in that, The height adjustment assembly includes a pair of slide rods (27), which are slidably disposed on both sides of the lower tank (1). Multiple wedges (28) are fixedly disposed on the slide rods (27) corresponding to multiple limiting grooves (24). A rotating wheel (26) is rotatably connected to the outer side of the limiting block (25). The rotating wheel (26) is in contact with the upper surface of the wedge (28). A crossbar (29) is fixedly connected to one end of the pair of slide rods (27). A hydraulic rod three (30) is fixedly disposed on the outer side of the other end of the lower tank (1). The telescopic end of the hydraulic rod three (30) is fixedly connected to the crossbar (29).

6. The flame cutting device for continuously cast steel billets with adjustable width according to claim 1, characterized in that, An opening (36) is provided at one end of the lower tank (1). An extension platform (37) is fixedly provided at one end of each pair of adjustment plates (2). The extension platform (37) extends through the opening (36) to the outside of the lower tank (1). A laser emitter (39) is fixedly provided on the extension platform (37) located outside the lower tank (1) by a vertical rod (38). The laser emitted by the laser emitter (39) can irradiate the steel billet and display two parallel rays.

7. The flame cutting device for continuously cast steel billets with adjustable width according to claim 6, characterized in that, The light emitted by the laser emitter (39) is located on the outside of the support plate (3).

8. The flame cutting device for continuously cast steel billets with adjustable width according to claim 1, characterized in that, A guard plate (40) is fixedly installed between a pair of rotating cylinders (6). When the support rod (8) rotates to below the adjusting rod (7), the guard plate (40) can cover the adjusting rod (7) and the support rod (8).

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