A billet flame cutting device and method

Abstract

The present invention provides a billet flame cutting device and method, including a cutting assembly, a lifting assembly, and a storage rack. A first guide rail is provided below the cutting assembly, and the first guide rail is fixedly arranged. The cutting assembly is movably connected to the first guide rail. The storage rack corresponds to the position of the cutting assembly. A billet to be processed is arranged on the storage rack, and a corresponding lifting assembly is arranged below the billet to be processed. A limiting plate is fixedly arranged on the storage rack, and the limiting plate limits the side surface of the billet to be processed. The beneficial effects of the present invention are as follows: The cutting operation of the billet to be processed can be completed by a linearly moving cutting device, improving the work efficiency. The lifting assembly can lift the processed billet, making it easier to separate.

Description

Technical Field

[0001] The invention belongs to the technical field of steel billet processing, and in particular relates to a steel billet flame cutting device and method. Background Art

[0002] In recent years, the market has also put forward higher requirements for the production efficiency and specification quality of the finished products in the steel industry. Among them, cutting wide billets into narrow billets and then rolling them is an important starting link in the entire steel rolling production line. At present, the cutting method mostly adopts the traditional flame cutting method, which has the following disadvantages: First, there is no billet centering device, and most of the billets after cutting are tapered, which reduces the yield rate and increases the difficulty of rolling; second, there is a lack of cutting waste slag collection device, and manual slag removal is required, which not only increases the labor intensity of the staff, but also poses certain safety hazards; third, there is no billet lifting device, and the two billets are not easy to separate after cutting, and it is not convenient for the later lifting and transfer of the hoist. Summary of the invention

[0003] In view of this, the present invention aims to provide a steel billet flame cutting device and method to solve the problem that two steel billets are difficult to separate after the current steel billet flame cutting is completed.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] On the one hand, the present invention provides a steel billet flame cutting device, including a cutting component, a lifting component, and a storage rack. A guide rail is provided below the cutting component, the guide rail is fixedly arranged, the cutting component is movably connected to the guide rail, the storage rack corresponds to the position of the cutting component, a steel billet to be processed is provided on the storage rack, a lifting component corresponding to the steel billet to be processed is provided below the steel billet to be processed, a limit plate is fixed on the storage rack, and the limit plate limits the side of the steel billet to be processed.

[0006] Furthermore, the cutting assembly includes a flame cutting gun and a cutting bracket. The flame cutting gun is installed in cooperation with the cutting bracket. A roller 1 is fixedly provided at the lower end of the cutting bracket, and the roller 1 can move along the length direction of the guide rail 1.

[0007] Furthermore, a corresponding waste slag collection vehicle is provided below the steel billet to be processed, a corresponding guide rail 2 is provided below the waste slag collection vehicle, a roller 2 is provided at the bottom of the waste slag collection vehicle, the roller 2 can move along the length direction of the guide rail 2, and the guide rail 2 is fixedly arranged;

[0008] The storage rack is provided with a slag through hole.

[0009] Further, the billet flame cutting device further includes a winch, the winch is fixedly arranged, a steel wire rope is arranged on the turntable of the winch, and the steel wire rope is fixedly connected with the waste residue collection vehicle through a connecting component;

[0010] The connecting component includes a connecting block, a connecting rod, a baffle, a mounting bolt, and a compression spring. The steel wire rope is fixedly connected with the connecting block. One end of the connecting block away from the steel wire rope is fixedly provided with a connecting rod. One end of the connecting rod away from the steel wire rope is provided with a baffle. A mounting bolt is arranged on the side of the baffle away from the steel wire rope. The mounting bolt is threadedly connected with the connecting rod. The diameter of the baffle is larger than the diameter of the compression spring, and the diameter of the compression spring is larger than the diameter of the connecting rod. Two guide plates are arranged at the bottom end of the waste residue collection vehicle, and guide holes matching the connecting rod are formed in the guide plates;

[0011] The connecting rod is installed inside the guide hole, and the compression spring is installed outside the connecting rod and is located between the baffle and the guide plate.

[0012] Further, the billet flame cutting device further includes an alignment component, the alignment component corresponds to the position of the billet to be processed, and the alignment component is fixedly arranged.

[0013] Further, the lifting component includes a lifting hydraulic cylinder, a top plate, and a base. The output shaft of the lifting hydraulic cylinder is fixedly connected with the top plate, the housing of the hydraulic cylinder is fixedly connected with the base, and the base is fixedly connected with the ground.

[0014] Further, a side plate is fixedly arranged on the side of the top plate, and one end of the side plate away from the top plate is inclined downward.

[0015] Further, the billet flame cutting device further includes a limiting component. The limiting component includes a limiting bracket and a limiting rod. A column is fixedly arranged on the limiting bracket. The bottom end of the column is fixedly arranged on the mounting column. The diameter of the mounting column is smaller than the diameter of the column. A mounting hole corresponding to the mounting column is formed in the limiting rod. The limiting rod is installed outside the mounting column, and the limiting rod is rotatably connected with the mounting column. A limiting ring is arranged at the top end of the mounting column, and the limiting ring limits the limiting rod. The limiting ring is fixedly connected with the mounting column through a fixing bolt.

[0016] Further, a handle is arranged at one end of the limiting rod.

[0017] On the other hand, the present invention provides a billet flame cutting method based on the billet flame cutting device in the above-mentioned one aspect, including the following steps:

[0018] S1. Place the billet to be processed on the storage rack;

[0019] S2. The alignment component pushes one side of the billet to be processed, so that the other side of the billet to be processed abuts against the limiting plate;

[0020] S3, rotating the limit rod, so that the lower end surface of the limit rod is limited to the upper end surface of one side of the steel billet to be processed;

[0021] S4, the flame cutting gun is ignited to cut the steel billet to be processed, and the flame cutting component performs a linear motion to cut the steel billet to be processed;

[0022] S5. After the cutting is completed, the lifting assembly lifts one of the two processed billets away from the limiting rod, and the limiting assembly limits the other processed billet to separate the two billets, and then the processed billets are transferred out of the processing area respectively.

[0023] Compared with the prior art, the steel billet flame cutting device and method described in the present invention have the following beneficial effects:

[0024] (1) The flame cutting device for steel billets described in the present invention can complete the cutting operation of the steel billets to be processed by moving the cutting assembly linearly, thereby improving the work efficiency. The lifting assembly can lift the processed steel billets to make them easier to separate.

[0025] (2) The flame cutting device for steel billets described in the present invention uses an alignment assembly and a limit plate in combination to ensure the straightness of the cutting edge, improve the yield rate of the material, and reduce the difficulty of rolling.

[0026] (3) The flame cutting device for steel billets described in the present invention collects cutting waste slag through a waste slag collecting vehicle. When the waste slag collecting vehicle is full, a winch is used to transfer the waste slag collecting vehicle to a designated location for cleaning, thereby reducing the labor intensity of the staff and improving the safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A schematic diagram of the structure of the device according to an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the side structure of the device according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a cutting assembly according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the storage rack according to an embodiment of the present invention;

[0032] Figure 5Schematic structural diagram of the limit component according to the embodiment of the present invention;

[0033] Figure 6 Schematic structural diagram of the lifting component according to the embodiment of the present invention;

[0034] Figure 7 Schematic structural diagram of the alignment component according to the embodiment of the present invention;

[0035] Figure 8 Schematic partial sectional structural diagram of the device according to the embodiment of the present invention;

[0036] Figure 9 Schematic installation sectional structural diagram of the winch according to the embodiment of the present invention;

[0037] Figure 10 Schematic structural diagram of the connection component according to the embodiment of the present invention.

[0038] Explanation of reference numerals:

[0039] 1 - Cutting component; 2 - Storage rack; 3 - Lifting component; 4 - Scrap collecting vehicle; 5 - Limit component; 6 - Steel billet to be processed; 7 - Alignment component; 8 - Guide rail 1; 9 - Guide rail 2; 10 - Winch; 11 - Steel wire rope; 12 - Connection block; 13 - Connecting rod; 14 - Compression spring; 15 - Baffle; 16 - Installation bolt; 17 - Guide plate; 101 - Flame cutting gun; 102 - Cutting bracket; 103 - Roller 1; 201 - Limit plate; 202 - Slag through hole; 301 - Base; 302 - Lifting hydraulic cylinder; 304 - Side plate; 305 - Top plate; 401 - Roller 2; 501 - Limit bracket; 502 - Column; 503 - Limit ring; 504 - Limit rod; 505 - Handle; 506 - Installation column; 507 - Fixed bolt; 701 - Alignment bracket; 702 - Alignment hydraulic cylinder. Detailed implementation manners

[0040] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0041] The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] Embodiment 1:

[0043] This embodiment provides a steel billet flame cutting device, as Figures 1 to 4As shown in the figure, it includes a cutting component 1, a lifting component 3, and a storage rack 2. Below the cutting component 1, there is a first guide rail 8, and the first guide rail 8 is fixedly arranged. The first guide rail 8 can be fixedly connected to the ground through expansion bolts or fixedly connected to the equipment through bolts. Preferably, the first guide rail 8 is fixedly connected to the ground through expansion bolts. The cutting component 1 is movably connected to the first guide rail 8. The storage rack 2 corresponds to the position of the cutting component 1. There is a steel billet to be processed 6 on the storage rack 2. Below the steel billet to be processed 6, there is a corresponding lifting component 3. A limiting plate 201 is fixedly arranged on the storage rack 2, and the limiting plate 201 limits the side of the steel billet to be processed 6 to prevent the steel billet to be processed 6 from deviating from the processing position. The cutting component 1 includes a flame cutting gun 101 and a cutting bracket 102. The flame cutting gun 101 is cooperatively installed with the cutting bracket 102. A first roller 103 is fixedly arranged at the lower end of the cutting bracket 102, and the first roller 103 can move along the length direction of the first guide rail 8. A chute part is arranged on the first roller 103, and a protruding part corresponding to the chute part is arranged on the first guide rail 8. The first roller 103 and the first guide rail 8 achieve rolling cooperation through the chute part and the protruding part. Preferably, the number of the storage racks 2 and the lifting components 3 is multiple, and they are arranged along the length direction of the first guide rail 8, which can realize the cutting operation of steel billets to be processed 6 with various lengths. By linearly moving the cutting component 1, the cutting operation of the steel billet to be processed 6 can be completed, improving the work efficiency. The lifting component 3 can lift the processed steel billet to make it easier to separate.

[0044] As Figures 8 to 10As shown in the figure, a waste residue collection vehicle 4 corresponding to the steel billet 6 to be processed is provided below the steel billet 6 to be processed. A corresponding second guide rail 9 is provided below the waste residue collection vehicle 4. A second roller 401 is provided at the bottom end of the waste residue collection vehicle 4. The second roller 401 can move along the length direction of the second guide rail 9. An installation groove corresponding to the steel billet 66 to be processed is opened on the ground. The second guide rail 9 is fixedly arranged at the bottom end of the installation groove. A chute part is provided on the second roller 401, and a convex part corresponding to the chute part is provided on the second guide rail 9. The second roller 401 and the second guide rail 9 achieve rolling cooperation through the chute part and the convex part. A slag through-hole 202 is opened on the storage rack 2. The cutting waste residue flows into the waste residue collection vehicle 4 below through the slag through-hole 202. The steel billet flame cutting device further includes a winch 10. The winch 10 is fixedly arranged inside the bottom end of the installation groove. A steel wire rope 11 is provided on the turntable of the winch 10. The steel wire rope 11 is fixedly connected with the waste residue collection vehicle 4 through a connecting component. The connecting component includes a connecting block 12, a connecting rod 13, a baffle 15, an installation bolt 16, and a compression spring 14. The steel wire rope 11 is fixedly connected with the connecting block 12. One end of the connecting block 12 away from the steel wire rope 11 is fixedly provided with a connecting rod 13. One end of the connecting rod 13 away from the steel wire rope 11 is provided with a baffle 15. An installation bolt 16 is provided on the side of the baffle 15 away from the steel wire rope 11. The installation bolt 16 is threadedly connected with the connecting rod 13. The diameter of the baffle 15 is larger than the diameter of the compression spring 14. The diameter of the compression spring 14 is larger than the diameter of the connecting rod 13. Two guide plates 17 are provided at the bottom end of the waste residue collection vehicle 4. A guide hole matching the connecting rod 13 is opened on the guide plate 17. The connecting rod 13 is installed inside the guide hole. The compression spring 14 is installed outside the connecting rod 13 and is located between the baffle 15 and the guide plate 17. The guide plate 17 plays a guiding role in the movement of the connection, improving the stability of the structure. Start the winch 10. The turntable of the winch 10 drives the steel wire rope 11 to move. The steel wire rope 11 drives the material vehicle to move forward. The cutting waste residue is collected by the waste residue collection vehicle 4. After the waste residue collection vehicle 4 is full of waste residue, then use the winch 10 to transfer the waste residue collection vehicle 4 to a designated position for cleaning, reducing the labor intensity of the staff and improving the safety of the production process. The compression spring 14 plays a buffering role during the startup process, preventing damage to the waste residue collection vehicle 4 caused by the instantaneous startup of the winch 10.

[0045] As Figure 7As shown, the steel billet flame cutting device further includes an alignment component 7, which corresponds to the position of the steel billet 6 to be processed, and is fixedly arranged on the ground. The alignment component 7 includes an alignment hydraulic cylinder 702 and an alignment bracket 701. The output shaft of the alignment hydraulic cylinder 702 corresponds to the side of the steel billet 6 to be processed, and the housing of the alignment hydraulic cylinder 702 is fixedly connected to the ground through the alignment bracket 701. The alignment hydraulic cylinder 702 is started, and the output shaft of the alignment hydraulic cylinder 702 presses against one side of the steel billet 6 to be processed, and the other side of the steel billet 6 to be processed presses against the limit plate 201. The coordinated use of the alignment component 7 and the limit plate 201 ensures the straightness of the cutting mouth, improves the material yield rate, and reduces the difficulty of rolling.

[0046] like Figure 6 As shown, the lifting assembly 3 includes a lifting hydraulic cylinder 302, a top plate 305, and a base 301. The output shaft of the lifting hydraulic cylinder 302 is fixedly connected to the top plate 305, the housing of the hydraulic cylinder is fixedly connected to the base 301, and the base 301 is fixedly connected to the ground. A side plate 304 is fixedly arranged on the side of the top plate 305. The end of the side plate 304 away from the top plate 305 is tilted downward. The side plate 304 guides the cutting waste so that it flows smoothly into the waste collection vehicle 4.

[0047] like Figure 5 As shown, the steel billet flame cutting device also includes a limiting assembly 5, which includes a limiting bracket 501 and a limiting rod 504. The limiting bracket 501 is fixed with a column 502, and the bottom end of the column 502 is fixedly mounted on a mounting column 506. The diameter of the mounting column 506 is smaller than the diameter of the column 502. The limiting rod 504 is provided with a mounting hole corresponding to the mounting column 506. The limiting rod 504 is mounted on the outside of the mounting column 506. The limiting rod 504 is rotatably connected to the mounting column 506. A limiting ring 503 is provided at the top of the mounting column 506. The limiting ring 503 limits the limiting rod 504, and the limiting ring 503 is fixedly connected to the mounting column 506 through a fixing bolt 507. A handle 505 is provided at one end of the limiting rod 504, and the handle 505 facilitates the rotation of the limiting rod 504. The limiting assembly 5 limits one side of the steel billet 6 to be processed, and is used in conjunction with the lifting assembly 3 to better achieve the separation of the steel billet after processing.

[0048] The lifting hydraulic cylinder 302 and the alignment hydraulic cylinder 702 adopt but are not limited to the existing electric hydraulic jacks. The electric hydraulic jacks are the existing technology and their specific structures and connection forms are not described here.

[0049] Embodiment 2:

[0050] This embodiment is based on the steel billet flame cutting method of the steel billet flame cutting device in the above-mentioned embodiment 1.

[0051] The steps include:

[0052] S1, placing the steel billet 6 to be processed on the rack 2;

[0053] S2. The alignment component 7 pushes one side of the steel billet 6 to be processed so that the other side of the steel billet 6 to be processed presses against the limit plate 201. The coordinated use of the alignment component 7 and the limit plate 201 ensures the straightness of the cutting edge, improves the material yield rate, and reduces the difficulty of rolling.

[0054] S3, rotating the limiting rod 504, the lower end surface of the limiting rod 504 limits the upper end surface of one side of the steel billet 6 to be processed, so as to prevent the steel billet 6 to be processed from shaking during the processing.

[0055] S4, the flame cutting gun 101 is ignited to cut the steel billet 6 to be processed, and the cutting assembly 1 performs linear motion to perform linear cutting of the steel billet 6 to be processed; the guide rail 1 ensures that the cutting assembly 1 performs linear motion, ensures the straightness of the cutting mouth, improves the material yield rate, and reduces the difficulty of rolling.

[0056] S5. After cutting is completed, the lifting assembly 3 lifts one of the two processed billets away from the limiting rod 504, and the limiting assembly 5 limits the other processed billet to separate the two billets, and then the processed billets are transferred out of the processing area respectively.

[0057] A certain amount of cutting waste will be generated during the cutting process. The cutting waste is collected by the waste collection vehicle 4. When the waste collection vehicle 4 is full, the winch 10 is used to transfer the waste collection vehicle 4 to a designated location for cleaning, thereby reducing the labor intensity of the staff and improving the safety of the production process.

[0058] Those of ordinary skill in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0059] In several embodiments provided by the present application, it should be understood that the disclosed methods and systems can be implemented in other ways. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The above-mentioned units may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

[0061] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The method for flame cutting of a billet by a billet flame cutting device includes the following steps: S1. Place the billet to be processed (6) on the storage rack (2); S2. The alignment assembly (7) pushes one side of the billet to be processed (6) so that the other side of the billet to be processed (6) abuts against the limit plate (201); S3. Rotate the limit rod (504), and the lower end face of the limit rod (504) limits the upper end face of one side of the billet to be processed (6); S4. The flame cutting gun (101) ignites to cut the billet to be processed (6), and the cutting assembly (1) moves linearly to perform linear cutting on the billet to be processed (6); S5. After cutting, the lifting assembly (3) lifts one of the two processed billets that is far from the limit rod (504), and the limiting assembly (5) limits the other processed billet, realizing the separation of the two billets, and then the processed billets are respectively transferred out of the processing area; The billet flame cutting device includes a cutting assembly (1), a lifting assembly (3), and a storage rack (2). A first guide rail (8) is provided below the cutting assembly (1), and the first guide rail (8) is fixedly arranged. The cutting assembly (1) is movably connected to the first guide rail (8). The storage rack (2) corresponds to the position of the cutting assembly (1). The billet to be processed (6) is arranged on the storage rack (2). A corresponding lifting assembly (3) is provided below the billet to be processed (6). A limit plate (201) is fixedly arranged on the storage rack (2), and the limit plate (201) limits the side surface of the billet to be processed (6); The cutting assembly (1) includes a flame cutting gun (101) and a cutting bracket (102). The flame cutting gun (101) is cooperatively installed with the cutting bracket (102). A first roller (103) is fixedly arranged at the lower end of the cutting bracket (102), and the first roller (103) can move along the length direction of the first guide rail (8); The billet flame cutting device further includes an alignment assembly (7). The alignment assembly (7) corresponds to the position of the billet to be processed (6), and the alignment assembly (7) is fixedly arranged. The alignment assembly (7) includes an alignment hydraulic cylinder (702) and an alignment bracket (701). The output shaft of the alignment hydraulic cylinder (702) corresponds to the side surface of the billet to be processed (6), and the housing of the alignment hydraulic cylinder (702) is fixedly connected to the ground through the alignment bracket (701); The billet flame cutting device further includes a limiting component (5). The limiting component (5) includes a limiting bracket (501) and a limiting rod (504). A column (502) is fixedly arranged on the limiting bracket (501). The bottom end of the column (502) is fixedly arranged on an installation column (506). The diameter of the installation column (506) is smaller than that of the column (502). An installation hole corresponding to the installation column (506) is formed in the limiting rod (504). The limiting rod (504) is installed outside the installation column (506). The limiting rod (504) is rotatably connected to the installation column (506). A limiting ring (503) is arranged at the top end of the installation column (506). The limiting ring (503) limits the limiting rod (504). The limiting ring (503) is fixedly connected to the installation column (506) through a fixing bolt (507).

2. The method for flame cutting of a steel billet of the steel billet flame cutting device according to claim 1, characterized in that: A waste residue collection vehicle (4) corresponding thereto is arranged below the to-be-processed billet (6). A guide rail two (9) corresponding thereto is arranged below the waste residue collection vehicle (4). Roller two (401) is arranged at the bottom end of the waste residue collection vehicle (4). Roller two (401) can move along the length direction of the guide rail two (9). The guide rail two (9) is fixedly arranged; a slag through hole (202) is formed in the storage rack (2).

3. The method for flame cutting a steel billet of the steel billet flame cutting device according to claim 2, characterized in that: The billet flame cutting device further includes a winch (10). The winch (10) is fixedly arranged. A steel wire rope (11) is arranged on the turntable of the winch (10). The steel wire rope (11) is fixedly connected to the waste residue collection vehicle (4) through a connecting component; the connecting component includes a connecting block (12), a connecting rod (13), a baffle (15), an installation bolt (16), and a compression spring (14). The steel wire rope (11) is fixedly connected to the connecting block (12). A connecting rod (13) is fixedly arranged at one end of the connecting block (12) away from the steel wire rope (11). A baffle (15) is arranged at one end of the connecting rod (13) away from the steel wire rope (11). An installation bolt (16) is arranged on one side of the baffle (15) away from the steel wire rope (11). The installation bolt (16) is threadedly connected to the connecting rod (13). The diameter of the baffle (15) is larger than that of the compression spring (14). The diameter of the compression spring (14) is larger than that of the connecting rod (13). Two guide plates (17) are arranged at the bottom end of the waste residue collection vehicle (4). A guide hole matching the connecting rod (13) is formed in the guide plate (17); the connecting rod (13) is installed inside the guide hole. The compression spring (14) is installed outside the connecting rod (13) and is located between the baffle (15) and the guide plate (17).

4. The method for flame cutting a steel billet of the steel billet flame cutting device according to claim 1, characterized in that: The lifting component (3) includes a lifting hydraulic cylinder (302), a top plate (305), and a base (301). The output shaft of the lifting hydraulic cylinder (302) is fixedly connected to the top plate (305). The housing of the lifting hydraulic cylinder (302) is fixedly connected to the base (301). The base (301) is fixedly connected to the ground.

5. The method for flame cutting of a steel billet of the steel billet flame cutting device according to claim 4, characterized in that: A side plate (304) is fixedly provided on the side surface of the top plate (305), and one end of the side plate (304) far from the top plate (305) is inclined downward.

6. The method for flame cutting of a steel billet of the steel billet flame cutting device according to claim 1, characterized in that: One end of the limiting rod (504) is provided with a handle (505).

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