Safety protection device and usage method of continuous casting flame cutting machine

Abstract

The present invention relates to a safety protection device for a continuous casting flame cutting machine, which includes a protection plate arranged on a bearing platform. The bearing platform is provided with a guide rail for the movement of the protection plate. The protection plate includes a first protection plate and an intermediate protection plate that are slidably connected. The first protection plate is detachably connected to the flame cutting machine, and the intermediate protection plate away from the flame cutting machine is connected to the bearing platform. The first protection plate and the intermediate protection plate are nested and connected. Main traction chutes are provided on the outer surface of the first protection plate and the outer surface of the intermediate protection plate. A main chute through hole is provided in the main traction chute. A first fixing part passes through the main chute through hole to slidably connect the main traction chute with the first protection plate, and a second fixing part passes through the main chute through hole to slidably connect the main traction chute with the intermediate protection plate. The present invention moves along with the movement of the flame cutting machine, covers the gaps on the bearing platform, and effectively prevents personnel from being scalded and from accidentally falling into the gaps and causing scalds and falls.

Description

Technical Field

[0001] The present invention relates to the technical field of protective devices, and more specifically, to a safety protection device for a continuous casting flame cutting machine and a using method thereof. Background Art

[0002] The flame cutting machine of a billet continuous casting machine is a device that uses a flame cutting gun to cut the casting billet according to a set length. When the continuous casting billet passes through the flame cutting machine, the temperature of the continuous casting billet is as high as 700 °C, and the temperature of the surrounding environment also reaches about 100 °C. Generally speaking, the flame cutting machine is installed on the bearing platform according to the casting stream. Multiple flame cutting machines are arranged on the bearing platform to cut multiple groups of casting billets at the same time. The vertical height between the bearing platform and the casting billet does not exceed two meters. There is only a crossbeam passage less than 0.5 meters wide between two adjacent flame cutting machines. During production, the continuous casting billet moves forward at a certain speed, and the flame cutting machine also moves forward to cut the casting billet. When the flame cutting machine cuts the casting billet forward, a gap will appear in the original parked position. When the flame cutting machine breaks down, the maintenance personnel stand in the crossbeam passage to repair the flame cutting machine. The heat of the high-temperature continuous casting billet will surge through the gap, causing discomfort to the personnel. Moreover, the gap is relatively large, and if the maintenance personnel are not careful, they may directly fall into the gap, causing serious burns and falls. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a safety protection device for a continuous casting flame cutting machine and a using method thereof. The safety protection device moves along with the flame cutting machine, covers the gap on the bearing platform, and effectively prevents personnel from being scalded and from accidentally falling into the gap, resulting in burns and falls.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions:

[0005] A safety protection device for a continuous casting flame cutting machine includes a protection plate arranged on a bearing platform. The bearing platform is provided with a guide rail for the movement of the protection plate. The protection plate includes a first protection plate and an intermediate protection plate that are slidably connected. The first protection plate is detachably connected to the flame cutting machine, and the intermediate protection plate away from the flame cutting machine is connected to the bearing platform. The first protection plate and the intermediate protection plate are nested. First fixing parts are respectively arranged on both sides of the outer surface of the first protection plate, and second fixing parts are respectively arranged on both sides of the outer surface of the intermediate protection plate. A main traction chute is arranged on the outer surfaces of the first protection plate and the intermediate protection plate. A main chute through hole is arranged in the main traction chute. The first fixing part passes through the main chute through hole to slidably connect the main traction chute with the first protection plate, and the second fixing part passes through the main chute through hole to slidably connect the main traction chute with the intermediate protection plate.

[0006] In one embodiment, the number of the intermediate protection plates is at least one.

[0007] In one embodiment, the number of the intermediate protection plates is not less than two, and adjacent intermediate protection plates are nested and connected. The front and rear adjacent intermediate protection plates are respectively provided with inward flanges and outward flanges that cooperate with each other. The last intermediate protection plate away from the flame cutting machine is connected to the bearing platform. On both sides of the outer surface of the intermediate protection plate connected to the first protection plate, a second fixing part and an auxiliary fixing part are respectively provided. The intermediate protection plate provided with the second fixing part is connected to the first protection plate through a main traction chute. On both sides of the outer surface of the remaining intermediate protection plates, auxiliary fixing parts are respectively provided. On both sides of the outer surface of adjacent intermediate protection plates, auxiliary traction chutes are provided. An auxiliary chute through hole is provided in the auxiliary traction chute. The auxiliary fixing part passes through the auxiliary chute through hole to slidably connect the auxiliary traction chute with the adjacent intermediate protection plate. Multiple intermediate protection plates are nested with each other and are slidably connected to each other in pairs through the auxiliary traction chutes. When the flame cutting machine moves forward, the intermediate protection plates are dragged out one by one to cover the gaps that appear due to the movement of the flame cutting machine. The auxiliary fixing part is an auxiliary fixing bolt that is threadedly connected to both sides of the outer surface of the intermediate protection plate.

[0008] In one embodiment, when the first protection plate and the intermediate protection plates are in a stacked state, a plurality of the auxiliary traction chutes are arranged vertically.

[0009] In one embodiment, the first fixing part is a first fixing bolt that is threadedly connected to both sides of the outer surface of the first protection plate, and the second fixing part is a second fixing bolt that is threadedly connected to both sides of the outer surface of the intermediate protection plate. The main traction chute and the auxiliary traction chute are respectively slidably connected to both sides of the outer surface of the protection plate through bolts, which is convenient for following the moving distance of the flame cutting machine to increase or decrease the number of intermediate protection plates, and is also beneficial for repairing or replacing the first protection plate or the intermediate protection plates.

[0010] In one embodiment, a heat insulation coating is provided on the side of the protection plate facing the continuous casting billet to slow down the rate of surface temperature rise of the protection plate. A heat insulation lining plate is provided on the side of the protection plate facing away from the continuous casting billet to reduce the surface temperature of the protection plate and prevent personnel from being scalded by the high temperature of the protection plate when falling on the protection plate.

[0011] In one embodiment, the protection plate includes an inner plate close to the continuous casting billet, an outer plate away from the continuous casting billet, and a heat dissipation pipeline. A heat insulation coating is provided on the side of the inner plate close to the continuous casting billet. A heat insulation lining plate is provided on the side of the outer plate away from the continuous casting billet. The heat dissipation pipeline is arranged between the inner plate and the outer plate and the heat dissipation pipeline is attached to the outer plate. Cooling liquid or cooling air is introduced into the heat dissipation pipeline to take away the heat of the protection plate, reduce the surface temperature of the protection plate, prevent personnel from being severely scalded when falling on the protection plate, and is also beneficial for extending the service life of the protection plate.

[0012] In one embodiment, the protective plate is provided with pulleys for moving on the guide rail, which is beneficial to reducing the friction between the protective plate and the guide rail and alleviating the burden on the driving motor of the flame cutting machine.

[0013] In one embodiment, the protective plate is a steel plate or a high-temperature resistant plastic plate with a thickness of 3 - 10 mm.

[0014] The usage method of the safety protection device for the continuous casting flame cutting machine includes the following steps.

[0015] One end of the first protective plate is connected to the flame cutting machine, and the other end of the first protective plate is nested and connected to the intermediate protective plate. The end of the intermediate protective plate far from the flame cutting machine is fixedly connected to the bearing platform. When the flame cutting machine is not cutting the billet, the flame cutting machine is parked at the starting position, and the first protective plate and the intermediate protective plate are overlapped.

[0016] When the flame cutting machine moves along with the billet to cut the billet, the first protective plate moves forward along the guide rail with the flame cutting machine, and the first protective plate and the intermediate protective plate completely cover the gap between the flame cutting machine and the starting position.

[0017] When the flame cutting machine stops after moving to the end position, at this time the billet cutting is completed, and the flame cutting machine returns to the starting position, and the first protective plate and the intermediate protective plate are overlapped again.

[0018] There are multiple flame cutting machines on the bearing platform. When one of the flame cutting machines breaks down, only the first protective plate and the intermediate protective plate of the faulty flame cutting machine need to be disassembled to repair the flame cutting machine.

[0019] The present invention has the following beneficial effects:

[0020] In the present invention, a first protective plate and an intermediate protective plate that are nested and overlapped are arranged on the bearing platform. The first protective plate is connected to the flame cutting machine, and the intermediate protective plate is connected to the bearing platform. The first protective plate and the intermediate protective plate are slidably connected through a main traction chute. The first protective plate moves forward with the flame cutting machine, and the first protective plate and the intermediate protective plate completely cover the gap between the flame cutting machine and its starting position, effectively preventing maintenance personnel from falling onto the high-temperature continuous casting billet from the gap between adjacent flame cutting machines during the maintenance process, causing casualties. At the same time, it can also effectively block the heat surging from the high-temperature continuous casting billet, reduce the impact on maintenance personnel, and greatly reduce the safety risks generated when maintenance personnel repair faulty equipment on the flame cutting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the usage state diagram of Embodiment 1 of the present invention;

[0022] Figure 2 is the back view schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the connection relationship between the first protective plate and the middle protective plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the heat dissipation pipeline inside the protective plate in Embodiment 2 of the present invention;

[0025] Figure 5 It is a usage state diagram of Embodiment 3 of the present invention;

[0026] Figure 6 It is a usage state diagram of Embodiment 4 of the present invention;

[0027] Figure 7 It is a top view schematic diagram of the present invention on the bearing platform.

[0028] In the figure: 1-flame cutting machine, 2-first protective plate, 21-first fixing part, 3-middle protective plate, 31-second fixing part, 32-assistive fixing part, 33-secondary traction chute, 331-secondary chute through hole, 4-main traction chute, 41-main chute through hole, 5-guide rail, 6-cast slab, 7-bearing platform, 8-thermal insulation lining, 9-heat dissipation pipeline, 10-gap, 11-crossbeam passage. Specific embodiments

[0029] The present invention will be described in detail below with reference to the drawings and embodiments.

[0030] It should be noted that the orientation words such as "upper" and "lower" involved in this article are determined relative to the perspective of the drawings, and are only for the convenience of description, and cannot be understood as a limitation to the technical solution.

[0031] As Figures 1-7 shown.

[0032] Embodiment 1

[0033] As Figures 1-3 shown, the continuous casting flame cutting machine safety protection device includes a protective plate arranged on the bearing platform 7. The bearing platform 7 is provided with a guide rail 5 for the movement of the protective plate. The protective plate includes a first protective plate 2 and a middle protective plate 3 that are slidably connected. The number of the middle protective plates 3 is one,

[0034] The first protective plate 2 is detachably connected to the flame cutting machine 1. The middle protective plate 3 away from the flame cutting machine 1 is connected to the bearing platform 7. The first protective plate 2 and the middle protective plate 3 are nested and connected. One end of the first protective plate 2 in contact with the middle protective plate 3 is provided with an outward flange, and one end of the middle protective plate 3 in contact with the first protective plate 2 is provided with an inward flange. The outward flange and the inward flange are connected to prevent the first protective plate 2 from separating from the middle protective plate 3 during movement. On both sides of the outer surface of the first protective plate 2, first fixing parts 21 are respectively provided. On both sides of the outer surface of the middle protective plate 3, second fixing parts 31 are respectively provided. On the outer surfaces of the first protective plate 2 and the middle protective plate 3, a main traction chute 4 is provided. A main chute through hole 41 is provided in the main traction chute 4. The first fixing part 21 passes through the main chute through hole 41 to slidably connect the main traction chute 4 with the first protective plate 2. The second fixing part 31 passes through the main chute through hole 41 to slidably connect the main traction chute 4 with the middle protective plate 3.

[0035] Preferably, heat insulation coatings are provided on the sides of the first protective plate 2 and the middle protective plate 3 close to the billet 6 to slow down the rate of surface temperature rise of the protective plates.

[0036] Preferably, heat insulation liners 8 are provided on the sides of the first protective plate 2 and the middle protective plate 3 away from the billet 6 to reduce the surface temperature of the protective plates and prevent personnel from being scalded by the high temperature of the protective plates when they accidentally fall on the protective plates.

[0037] Preferably, the first fixing part 21 is a first fixing bolt threadedly connected to both sides of the outer surface of the first protective plate 2. The first fixing bolt passes through the main chute through hole 41 and is screwed into the side surface of the first protective plate 2. The first fixing bolt connects the main traction chute 4 with the first protective plate 2 with a gap 10 left, and the main traction chute 4 and the first protective plate 2 can slide relative to each other; the second fixing part 31 is a second fixing bolt threadedly connected to both sides of the outer surface of the middle protective plate 3. The second fixing bolt passes through the main chute through hole 41 and is screwed into the side surface of the middle protective plate 3. The second fixing bolt connects the main traction chute 4 with the middle protective plate 3 with a gap 10 left, and the main traction chute 4 and the middle protective plate 3 can slide relative to each other.

[0038] Preferably, the protective plates are provided with pulleys for moving on the guide rails 5, which helps to reduce the friction between the protective plates and the guide rails 5 and relieve the burden on the drive motor of the flame cutting machine 1.

[0039] Preferably, the protective plates are steel plates or high-temperature resistant plastic plates with a thickness of 3 - 10 mm. Considering that the weight of the protective plates does not affect the walking speed of a single flame cutting machine 1, and at the same time considering the strength required for the steel plates to bear the fall of the human body, 5-mm high-strength steel plates are used for the protective plates.

[0040] Embodiment 2

[0041] AsFigure 4 As shown in the figure, on the basis of Embodiment 1, the protection plate includes an inner plate close to the billet 6, an outer plate far from the billet 6, and a heat dissipation pipe 9. An insulating coating is provided on the side of the inner plate close to the billet 6, and an insulating lining 8 is provided on the side of the outer plate far from the billet 6. The heat dissipation pipe 9 is arranged between the inner plate and the outer plate and the heat dissipation pipe 9 is attached to the outer plate. Cooling liquid or cooling air is introduced into the heat dissipation pipe 9 to take away the heat of the protection plate, reduce the surface temperature of the protection plate, prevent serious scalding when personnel fall on the protection plate, and at the same time is also beneficial to extending the service life of the protection plate.

[0042] Embodiment 3

[0043] As Figure 5 shown in the figure, on the basis of Embodiment 1 or 2, the number of intermediate protection plates 3 is not less than two, and adjacent intermediate protection plates 3 are nested and connected. The front and rear adjacent intermediate protection plates 3 are respectively provided with an inward flanging and an outward flanging that cooperate with each other. The second fixing part 31 passes through the through hole 41 of the main chute to slidably connect two adjacent intermediate protection plates 3. When the flame cutting machine 1 moves forward, the first protection plate 2 and multiple intermediate protection plates 3 are successively dragged out, so that the first protection plate 2 and the intermediate protection plates 3 completely cover the gap 10 between the flame cutting machine 1 and the starting position. When the flame cutting machine 1 returns to the starting position, the first protection plate 2 and multiple intermediate protection plates 3 are superposed. When the first protection plate 2 and multiple intermediate protection plates 3 are in a superposed state, multiple main traction chutes 4 are also superposed horizontally.

[0044] Embodiment 4

[0045] As Figure 6 shown in the figure, on the basis of Embodiment 1 or 2, the number of intermediate protection plates 3 is not less than two, and adjacent intermediate protection plates 3 are nested and connected. The front and rear adjacent intermediate protection plates 3 are respectively provided with an inward flanging and an outward flanging that cooperate with each other. The last intermediate protection plate 3 far from the flame cutting machine 1 is connected to the bearing platform 7. Second fixing parts 31 and auxiliary fixing parts 32 are respectively provided on both sides of the outer surface of the intermediate protection plate 3 connected to the first protection plate 2. The intermediate protection plate 3 provided with the second fixing part 31 is connected to the first protection plate 2 through the main traction chute 4. Auxiliary fixing parts 32 are respectively provided on both sides of the outer surface of the remaining intermediate protection plates 3. Sub-traction chutes 33 are provided on both sides of the outer surface of adjacent intermediate protection plates 3. A sub-chute through hole 331 is provided in the sub-traction chute 33. The auxiliary fixing part 32 passes through the sub-chute through hole 331 to slidably connect the sub-traction chute 33 with the adjacent intermediate protection plate 3. Multiple intermediate protection plates 3 are nested with each other and are slidably connected in pairs through the sub-traction chute 33. When the flame cutting machine 1 moves forward, the intermediate protection plates 3 are successively dragged out to cover the gap 10 that appears due to the movement of the flame cutting machine 1. The auxiliary fixing part 32 is an auxiliary fixing bolt threadedly connected to both sides of the outer surface of the intermediate protection plate 3;

[0046] Compared with Embodiment 3, when the intermediate protection plate 3 in Embodiment 4 is superposed, the secondary traction chutes 33 are arranged vertically and will not overlap with each other, reducing the occupied space.

[0047] As Figure 7 shown, taking Embodiment 1 as an example, the cross-sectional size of the continuous casting billet 6 is 0.16 m × 0.16 m. When the continuous casting billet 6 reaches the bearing platform 7, the temperature of the continuous casting billet 6 is as high as 700 °C, and the ambient temperature is about 100 °C. The height difference between the platform of the flame cutting machine 1 and the continuous casting billet 6 is 1.5 m. The width of the crossbeam passage 11 between two adjacent flame cutting machines 1 is only 0.3 m. The single flame cutting machine 1 moves forward from the starting position on the bearing platform 7 to cut the continuous casting billet 6, walks 2.7 m to the end limit and stops. At this time, the continuous casting billet 6 is cut and the flame cutting machine 1 returns to its original position. When the flame cutting machine 1 moves forward and cuts the continuous casting billet 6, a gap 10 will be exposed between the original starting position where it was parked and the flame cutting machine 1. The gap 10 refers to the exposed space left between the two crossbeam passages 11 after the single flame cutting machine 1 leaves the starting position. A person standing on the crossbeam passage 11 can see the high-temperature continuous casting billet 6. The length of the gap 10 is 1.4 m and the width is 0.7 m. The lower part of the gap 10 is the high-temperature continuous casting billet 6. When the flame cutting machine 1 has equipment failure, personnel need to stand on the narrow passage to handle the equipment failure. At this time, the adjacent flame cutting machine 1 has already moved forward to cut the continuous casting billet 6 and exposed the gap 10. If personnel are a little careless, they will fall into the gap 10 of the adjacent flame cutting machine 1, causing serious burns and falls, and the consequences will be unimaginable. At the same time, the heat of the high-temperature continuous casting billet 6 will also rise through the gap 10, causing discomfort to the personnel's bodies;

[0048] The present invention provides a first protection plate 2 and an intermediate protection plate 3 with a steel plate thickness of 5 mm. The length of the first protection plate 2 is 0.8 m and the width is 0.68 m. The length of the intermediate protection plate 3 is 0.6 m and the width is 0.64 m. The first protection plate 2 can be superposed inside the intermediate protection plate 3. When the first protection plate 2 moves forward with the flame cutting machine 1 until it is completely pulled out, the total length of the first protection plate 2 and the intermediate protection plate 3 is close to that of the gap 10, completely covering the gap 10.

[0049] On the basis of the above embodiments, the usage method of the present invention is as follows, including the following steps.

[0050] One end of the first protection plate 2 is connected to the flame cutting machine 1, the other end of the first protection plate 2 is nested and connected to the intermediate protection plate 3, and one end of the intermediate protection plate 3 away from the flame cutting machine 1 is fixedly connected to the bearing platform 7. When the flame cutting machine 1 does not cut the continuous casting billet 6, the flame cutting machine 1 stops at the starting position, and the first protection plate 2 and the intermediate protection plate 3 are superposed;

[0051] When the flame cutting machine 1 moves along with the billet 6 to cut the billet 6, the first protective plate 2 moves forward along the guide rail 5 with the flame cutting machine 1, and the first protective plate 2 and the middle protective plate 3 completely cover the gap 10 between the flame cutting machine 1 and the starting position;

[0052] When the flame cutting machine 1 stops after moving to the end position, at this time the billet 6 cutting is completed, the flame cutting machine 1 returns to the starting position, and the first protective plate 2 and the middle protective plate 3 are overlapped again;

[0053] There are multiple flame cutting machines 1 on the bearing platform 7. When one of the flame cutting machines 1 breaks down, only the first protective plate 2 and the middle protective plate 3 of the faulty flame cutting machine 1 need to be disassembled, then the flame cutting machine 1 can be repaired, effectively preventing maintenance personnel from falling onto the high-temperature continuous casting billet 6 from the gap 10 between adjacent flame cutting machines 1 during the maintenance process, causing casualties. At the same time, it can also effectively block the heat surging from the high-temperature continuous casting billet 6, reduce the impact on maintenance personnel, and greatly reduce the safety risks generated when maintenance personnel repair faulty equipment on the flame cutting machine 1.

[0054] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. Safety protection device for continuous casting flame cutting machine, Characterized in that, It includes a protective plate arranged on a bearing platform (7). The bearing platform (7) is provided with a guide rail (5) for the movement of the protective plate. The protective plate includes a first protective plate (2) and an intermediate protective plate (3) that are slidably connected. The first protective plate (2) is detachably connected to the flame cutting machine (1). One end of the intermediate protective plate (3) away from the flame cutting machine (1) is connected to the bearing platform (7). The first protective plate (2) and the intermediate protective plate (3) are nested and connected. On both sides of the outer surface of the first protective plate (2), first fixing parts (21) are respectively arranged. On both sides of the outer surface of the intermediate protective plate (3), second fixing parts (31) are respectively arranged. On the outer surfaces of the first protective plate (2) and the intermediate protective plate (3), main traction chutes (4) are provided. In the main traction chutes (4), main chute through holes (41) are provided. The first fixing parts (21) pass through the main chute through holes (41) to slidably connect the main traction chutes (4) with the first protective plate (2). The second fixing parts (31) pass through the main chute through holes (41) to slidably connect the main traction chutes (4) with the intermediate protective plate (3); The number of the intermediate protective plates (3) is not less than two. Adjacent intermediate protective plates (3) are nested and connected. The last intermediate protective plate (3) away from the flame cutting machine (1) is connected to the bearing platform (7). The front and rear adjacent intermediate protective plates (3) are respectively provided with inward flanges and outward flanges that cooperate with each other. On both sides of the outer surface of the intermediate protective plate (3) connected to the first protective plate (2), second fixing parts (31) and auxiliary fixing parts (32) are respectively arranged. The intermediate protective plate (3) provided with the second fixing part (31) is connected to the first protective plate (2) through the main traction chute (4). On both sides of the outer surface of the remaining intermediate protective plates (3), auxiliary fixing parts (32) are respectively arranged. On both sides of the outer surfaces of adjacent intermediate protective plates (3), secondary traction chutes (33) are provided. In the secondary traction chutes (33), secondary chute through holes (331) are provided. The auxiliary fixing parts (32) pass through the secondary chute through holes (331) to slidably connect the secondary traction chutes (33) with the adjacent intermediate protective plates (3). The auxiliary fixing parts (32) are auxiliary fixing bolts threadedly connected to both sides of the outer surface of the intermediate protective plate (3); The protective plate is provided with pulleys for moving on the guide rail (5); the protective plate is a steel plate or a high-temperature resistant plastic plate.

2. The safety protection device for continuous casting flame cutting machine according to claim 1, Characterized in that, When the first protective plate (2) and the intermediate protective plate (3) are both in a stacked state, a plurality of the secondary traction chutes (33) are arranged vertically up and down.

3. The safety protection device for continuous casting flame cutting machine according to any one of claims 1-2, Characterized in that, The first fixing part (21) is a first fixing bolt threadedly connected to both sides of the outer surface of the first protective plate (2), and the second fixing part (31) is a second fixing bolt threadedly connected to both sides of the outer surface of the intermediate protective plate (3).

4. The safety protection device of the continuous casting flame cutting machine according to any one of claims 1-2, characterized in that, one side of the protection plate facing the casting blank (6) is provided with a heat insulation coating, and the side of the protection plate facing away from the casting blank (6) is provided with a heat insulation lining plate (8).

5. The safety protection device of the continuous casting flame cutting machine according to claim 4, characterized in that, the protection plate includes an inner plate close to the casting blank (6), an outer plate away from the casting blank (6) and a heat dissipation pipeline (9). The side of the inner plate close to the casting blank (6) is provided with a heat insulation coating, the side of the outer plate away from the casting blank (6) is provided with a heat insulation lining plate (8), the heat dissipation pipeline (9) is arranged between the inner plate and the outer plate and the heat dissipation pipeline (9) is attached to the outer plate, and a cooling liquid or cooling air is introduced into the heat dissipation pipeline (9).

6. The using method of the safety protection device of the continuous casting flame cutting machine, characterized in that, using the safety protection device of the continuous casting flame cutting machine according to claim 1, including the following steps; One end of the first protection plate (2) is connected to the flame cutting machine (1), the other end of the first protection plate (2) is nested and connected to the intermediate protection plate (3), and one end of the intermediate protection plate (3) away from the flame cutting machine (1) is fixedly connected to the bearing platform (7). When the flame cutting machine (1) does not cut the casting blank (6), the flame cutting machine (1) stops at the starting position, and the first protection plate (2) and the intermediate protection plate (3) are superposed; When the flame cutting machine (1) moves along with the casting blank (6) to cut the casting blank (6), the first protection plate (2) moves forward along the guide rail (5) along with the flame cutting machine (1), and the first protection plate (2) and the intermediate protection plate (3) completely cover the gap (10) between the flame cutting machine (1) and the starting position; When the flame cutting machine (1) stops after moving to the end position, at this time the casting blank (6) is cut, the flame cutting machine (1) returns to the starting position, and the first protection plate (2) and the intermediate protection plate (3) are superposed again; There are multiple flame cutting machines (1) on the bearing platform (7). When one of the flame cutting machines (1) fails, only the first protection plate (2) and the intermediate protection plate (3) of the faulty flame cutting machine (1) need to be disassembled to repair the flame cutting machine (1).

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