A roll table protection device for a continuous casting machine

Abstract

The present invention relates to the technical field of protection devices, and in particular to a protection device for a continuous casting machine roller table, comprising: a roller table frame, a plurality of conveyor rollers are rotatably connected to the middle of the roller table frame, a position sensor is arranged at the input end of the roller table frame, and a controller is fixedly connected to one end of the roller table frame away from the position sensor; a guiding mechanism, the guiding mechanism is arranged on the top of the roller table frame and adjacent to the position sensor; a protection mechanism, the protection mechanism is arranged on the top of the roller table frame and at one end of the controller; through the design of the position sensor in the present invention, it is sensed whether there is a billet entering the roller table, through the design of the guiding mechanism, the billet will not tilt when entering the roller table, thereby reducing the probability of occurrence of situations such as jamming and dropping of the billet during the transmission process, and through the design of the protection mechanism, it is prevented that the billet falls off the roller table frame during the transmission process.

Description

Technical Field

[0001] The present invention relates to the technical field of protection devices, and in particular to a protection device for a roller table of a continuous casting machine. Background Art

[0002] A continuous casting machine is an industrial device used to continuously cast high-temperature molten steel into billets with a certain cross-sectional shape and certain dimensional specifications. In the production process of the continuous casting machine, after the square billet comes out of the straightening machine, it is necessary to guide the billet onto the roller table. During this process, if the operation is incorrect, the billet will tilt and may even fall off the roller table, thereby affecting the personal safety of the staff.

[0003] After retrieval, a Chinese patent with the publication number CN209352109U, a conveyor roller protection device for roller table conveying, includes a base, a parallel bracket, a fixing plate, a conveyor roller and a protection device. The bottom of the base is provided with foot pads. The fixing plate is longitudinally installed on the base. The parallel bracket is provided with a mounting plate corresponding to the fixing plate up and down. The mounting plate and the fixing plate are fastened by screws. A plurality of protection devices are provided and are arranged side by side and correspondingly installed on the inner side wall of the parallel bracket. Both ends of the roller shaft of the conveyor roller are movably installed on the parallel bracket through a row of protection devices arranged side by side.

[0004] In the above technology, although it can provide buffering when the conveyor roller is stressed and has good vibration absorption performance, providing good protection for the continuous operation of the conveyor roller, the protection device does not provide a guiding mechanism at the feeding end of the roller table. In this way, the billet is likely to enter the roller table in an inclined state. The billet in an inclined state is very easy to fall off the roller table. In addition, the billet in an inclined state is very easy to get stuck on the roller table, which is likely to cause the subsequent billets to pile up and fall, not only easily causing equipment damage, but also affecting the personal safety of the staff.

[0005] Therefore, the present invention provides a protection device for a roller table of a continuous casting machine. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that it is not convenient for the square billet to enter the center of the roller table after coming out of the straightening machine in the prior art.

[0007] To solve the above technical problem, the present invention provides a protection device for a roller table of a continuous casting machine, including: a roller table frame, a plurality of conveyor rollers are rotatably connected in the middle of the roller table frame, a position sensor is arranged at the input end of the roller table frame, and a controller is fixedly connected to one end of the roller table frame far from the position sensor;

[0008] A guiding mechanism, the guiding mechanism is arranged on the top of the roller table frame and adjacent to the position sensor;

[0009] A protection mechanism, which is arranged on the top of the roller rack and at one end of the controller;

[0010] The guiding mechanism includes a mounting frame, guiding rollers, a first motor and an electric push rod. There are two mounting frames, and the two mounting frames are respectively rotatably connected to both ends of the top of the machine frame and are adjacent to the position sensors. Four guiding rollers are rotatably connected to the inner wall of the mounting frame, and the four guiding rollers are connected by a synchronous belt. One end of the top of the mounting frame is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with the guiding roller. An electric push rod is rotatably connected to the end of the mounting frame away from the first motor, and one end of the electric push rod away from the mounting frame is rotatably connected with a first support arm, and the first support arm is fixedly connected with the roller rack;

[0011] The protection mechanism includes a protective plate, springs, dampers and a second support arm. There are two protective plates, which are respectively arranged at both ends of the roller rack. Three springs are fixedly connected to one end of the side wall of the protective plate, and dampers are fixedly connected inside the springs of the protective plate. The ends of the springs and the dampers away from the protective plate are jointly fixedly connected with a second support arm, and the second support arm is fixedly connected with the roller rack.

[0012] In an embodiment of the present invention, a pushing mechanism is further included. The pushing mechanism is arranged between the guiding mechanism and the protection mechanism. The pushing mechanism includes a support frame, a second motor, a bidirectional threaded rod, a connecting rod, a U-shaped plate and a pushing roller. The support frame is fixedly connected with the roller rack. One end of the top of the support frame is fixedly connected with a second motor, and the output end of the second motor is fixedly connected with a bidirectional threaded rod. Connecting rods are respectively threadedly connected to both ends of the bidirectional threaded rod. The connecting rods are slidably connected with the support frame. The bottom of the connecting rod is fixedly connected with a U-shaped plate, and a pushing roller is rotatably connected to one end of the U-shaped plate.

[0013] In an embodiment of the present invention, a through groove is provided at the top of the support frame, and the connecting rod is slidably connected with the through groove. A collar is fixedly connected to the top of the connecting rod, and the collar is threadedly connected with the bidirectional threaded rod.

[0014] In an embodiment of the present invention, two connecting arms are fixedly connected to the connecting rod below the support frame. A first roller is rotatably connected to the top of the connecting arm. Grooves are respectively provided on the side walls at both ends of the top of the support frame, and the roller is in rolling connection with the groove.

[0015] In an embodiment of the present invention, a sliding plate is fixedly connected to one end of the side wall of the U-shaped plate. Through holes are respectively provided on the side walls at both ends of the support frame, and the sliding plate is slidably connected with the through hole.

[0016] In one embodiment of the present invention, mounting grooves are respectively provided at the upper and lower ends of the through hole of the support frame. A second roller is rotatably connected to one end of each mounting groove. Limiting grooves are respectively provided at the upper and lower ends of the sliding plate, and the limiting grooves are in rolling connection with the second rollers.

[0017] In one embodiment of the present invention, the position sensor includes an infrared emitter and an infrared receiver. Both the infrared emitter and the infrared receiver are fixedly connected to the roller path frame, and both the infrared emitter and the infrared receiver are electrically connected to the controller.

[0018] In one embodiment of the present invention, a fixed block is fixedly connected to the lower part of the mounting frame of the roller path frame. One end of the bottom of the mounting frame is fixedly connected with a rotating shaft, and the fixed block is rotatably connected with the rotating shaft.

[0019] In one embodiment of the present invention, the guiding roller extends to the outside of the mounting frame at one end of the synchronous belt and is fixedly connected with a synchronous pulley, and the synchronous pulley is meshed with the synchronous belt.

[0020] In one embodiment of the present invention, a plurality of third motors are fixedly connected to one end of the side wall of the roller path frame. The output end of the third motor is fixedly connected with the conveying roller, and the third motor is electrically connected to the controller.

[0021] The above technical solution of the present invention has the following advantages compared with the prior art:

[0022] For a continuous casting machine roller path protection device of the present invention, through the design of the position sensor to sense whether there is a billet entering the roller path and transmit the signal to the controller, thereby triggering the guiding mechanism to start working. Through the design of the guiding mechanism, the billet will not tilt when entering the roller path, thereby reducing the occurrence probability of situations such as jamming and dropping during the transmission of the billet. Among them, through the design of the electric push rod, the mounting frame can be pushed to rotate in a fan shape, thereby driving the four guiding rollers to move. By driving the four guiding rollers to rotate with the first motor, under the action of the guiding rollers on both sides of the roller path frame, the billet can be guided to the middle of the roller path, so that the billet can be smoothly conveyed;

[0023] For a continuous casting machine roller path protection device of the present invention, through the design of the protection mechanism to prevent the billet from falling off the roller path frame during the transmission process. When the conveying roller at a certain place on the roller path frame fails and stops rotating, at this time, the billet may tilt and jam. At this time, the protection plate in the protection mechanism can effectively prevent the billet from falling off the roller path frame. At the same time, through the design of the spring and the damper, part of the impact energy generated during the tilting movement of the billet can be consumed, thereby avoiding the billet from damaging the components on the roller path;

[0024] A kind of roller table protection device of the continuous casting machine described in the present invention can push the billet to the middle of the roller table through the design of the pushing mechanism in cooperation with the guiding mechanism. Among them, the second motor drives the bidirectional threaded rod to rotate, thereby driving the two pushing rollers to move synchronously and in opposite directions, so that the two pushing rollers push the billet to the middle of the roller table. At the same time, the billet can be clamped by the two pushing rollers, so that the billet can always be kept in the middle of the roller table during transportation. Even when a transfer roller at a certain place on the roller table frame fails and stops rotating, under the clamping and limiting of the two pushing rollers, the billet can still be located in the middle of the roller table, thus avoiding the situation of jamming or even falling off the roller table due to the inclination of the billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to the specific embodiments of the present invention and in conjunction with the drawings.

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 is Figure 1 a structural schematic diagram of another perspective;

[0028] Figure 3 is a structural schematic diagram of the roller table frame in the present invention;

[0029] Figure 4 is a structural schematic diagram of the guiding mechanism in the present invention;

[0030] Figure 5 is a structural schematic diagram of the protection mechanism in the present invention;

[0031] Figure 6 is a structural schematic diagram of the connection structure between the damper and the second support arm in the present invention;

[0032] Figure 7 is a structural schematic diagram of the pushing mechanism in the present invention;

[0033] Figure 8 is a structural schematic diagram of the connecting rod in the present invention;

[0034] Figure 9 is a structural schematic diagram of the support frame in the present invention.

[0035] Description of the reference numerals in the specification: 1. roller frame; 101. conveying roller; 102. position sensor; 1021. infrared transmitter; 1022. infrared receiver; 103. controller; 104. fixing block; 105. third motor; 2. guide mechanism; 201. mounting frame; 202. guide roller; 203. first motor; 204. electric push rod; 205. synchronous belt; 206. first support arm; 207. rotating shaft; 208. synchronous wheel; 3. protection mechanism; 301 , protective plate; 302, spring; 303, damper; 304, second support arm; 4, pushing mechanism; 401, support frame; 402, second motor; 403, bidirectional threaded rod; 404, connecting rod; 405, U-shaped plate; 406, pushing roller; 407, through groove; 408, collar; 409, connecting arm; 410, first roller; 411, groove; 412, sliding plate; 413, through hole; 414, mounting groove; 415, second roller; 416, limiting groove. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0037] Reference Figures 1 to 9 As shown, a roller protection device for a continuous casting machine of the present invention comprises: a roller frame 1, a plurality of conveying rollers 101 are rotatably connected to the middle of the roller frame 1, a position sensor 102 is arranged at the input end of the roller frame 1, and a controller 103 is fixedly connected to one end of the roller frame 1 away from the position sensor 102;

[0038] The guide mechanism 2 is arranged on the top of the roller frame 1 and is located adjacent to the position sensor 102;

[0039] The protection mechanism 3 is arranged on the top of the roller frame 1 and is located at one end of the controller 103;

[0040] The guide mechanism 2 includes a mounting frame 201, a guide roller 202, a first motor 203 and an electric push rod 204. There are two mounting frames 201, which are rotatably connected to the two ends of the top of the frame and are located adjacent to the position sensor 102. The inner wall of the mounting frame 201 is rotatably connected to four guide rollers 202, and the four guide rollers 202 are connected through a synchronous belt 205. One end of the top of the mounting frame 201 is fixedly connected to the first motor 203, and the output end of the first motor 203 is fixedly connected to the guide roller 202. The end of the top of the mounting frame 201 away from the first motor 203 is rotatably connected to the electric push rod 204, and the end of the electric push rod 204 away from the mounting frame 201 is rotatably connected to the first support arm 206, and the first support arm 206 is fixedly connected to the roller frame 1;

[0041] The protection mechanism 3 includes a protection plate 301, a spring 302, a damper 303 and a second support arm 304. There are two protection plates 301, which are respectively arranged at both ends of the roller table frame 1. One end of the side wall of the protection plate 301 is fixedly connected with three springs 302. A damper 303 is fixedly connected inside the protection plate 301 where the spring 302 is located. The end of the spring 302 and the damper 303 away from the protection plate 301 are jointly fixedly connected with the second support arm 304, and the second support arm 304 is fixedly connected with the roller table frame 1;

[0042] In this embodiment, the position sensor 102, the first motor 203 and the electric push rod 204 are all electrically connected to the controller 103. When the blank comes out of the drawbridge machine, it will enter the roller table. During this process, the position sensor 102 installed on the roller table frame 1 can sense the position of the blank and transmit the data signal to the controller 103. At this time, the controller 103 will be triggered to activate the guiding mechanism 2. Then the electric push rod 204 in the guiding mechanism 2 will open. Under the action of the electric push rod 204, the mounting bracket 201 will rotate. When one end of the two mounting brackets 201 approaches each other, the blank can be guided towards the middle of the roller table. Then the first motor 203 is turned on. Under the drive of the first motor 203, the guiding rollers 202 will rotate. Under the action of the synchronous belt 205, the four guiding rollers 202 in the mounting bracket 201 can rotate synchronously, so as to play a better guiding role for the blank. The synchronous belt 205 can be replaced by a chain according to the actual situation. When a transfer roller 101 at a certain place on the roller table frame 1 fails during the transmission of the blank, the blank may tilt and get stuck. At this time, the protection plate 301 in the protection mechanism 3 can effectively prevent the blank from falling off the roller table frame 1. At the same time, through the design of the spring 302 and the damper 303, part of the impact energy generated during the tilting movement of the blank can be consumed, so as to prevent the blank from damaging the components on the roller table. In actual use, a displacement sensor can be installed on the roller table frame 1 or the protection plate 301 and electrically connected to the controller 103. In this way, when the blank tilts and hits the protection plate 301, at this time the spring 302 and the damper 303 will contract, and at the same time the protection plate 301 will displace. Then the displacement sensor will sense the displacement of the protection plate 301 and transmit the signal to the controller 103. At this time, the controller 103 will be triggered to control the equipment to stop, that is, to stop the transmission of the blank, to avoid the situation of the blank falling or piling up. The displacement sensor can adopt a proximity switch in the existing technology, which is not particularly limited here.

[0043] Further, as Figure 1 and Figure 7As shown, it further includes a pushing mechanism 4. The pushing mechanism 4 is arranged between the guiding mechanism 2 and the protection mechanism 3. The pushing mechanism 4 includes a support frame 401, a second motor 402, a bidirectional threaded rod 403, a connecting rod 404, a U-shaped plate 405, and a pushing roller 406. The support frame 401 is fixedly connected to the roller path frame 1. One end of the top of the support frame 401 is fixedly connected to the second motor 402. The output end of the second motor 402 is fixedly connected to the bidirectional threaded rod 403. The two ends of the bidirectional threaded rod 403 are respectively threadedly connected to the connecting rod 404. The connecting rod 404 is slidably connected to the support frame 401. The bottom of the connecting rod 404 is fixedly connected to the U-shaped plate 405. One end of the U-shaped plate 405 is rotatably connected to the pushing roller 406;

[0044] In this embodiment, through the design of the pushing mechanism 4, the blank can be pushed towards the middle of the roller path in cooperation with the guiding mechanism 2. Among them, the second motor 402 drives the bidirectional threaded rod 403 to rotate, thereby driving the two pushing rollers 406 to move synchronously and in opposite directions, so that the two pushing rollers 406 push the blank to the middle of the roller path. At the same time, the blank can be clamped by the two pushing rollers 406, so that the blank can always be kept in the middle of the roller path during transportation. Even when a certain conveyor roller 101 on the roller path frame 1 fails and stops rotating, under the clamping and limiting of the two pushing rollers 406, the blank can still be located in the middle of the roller path, thus avoiding the situation of jamming or even falling off the roller path due to the inclination of the blank.

[0045] Furthermore, as Figures 8 to 9 shown, a through groove 407 is provided at the top of the support frame 401. The connecting rod 404 is slidably connected to the through groove 407. A collar 408 is fixedly connected to the top of the connecting rod 404. The collar 408 is threadedly connected to the bidirectional threaded rod 403;

[0046] In this embodiment, through the design of the through groove 407, the connecting rod 404 can penetrate the support frame 401 and can be smoothly slidably connected to the support frame 401. Through the design of the sleeve, the connecting rod 404 can be smoothly threadedly connected to the bidirectional threaded rod 403.

[0047] Furthermore, as Figures 8 to 9 shown, two connecting arms 409 are fixedly connected to the connecting rod 404 below the support frame 401. The top of the connecting arm 409 is rotatably connected to a first roller 410. Grooves 411 are respectively provided on the side walls at both ends of the top of the support frame 401. The roller is in rolling connection with the groove 411;

[0048] In this embodiment, through the design of the first roller 410 and the groove 411, it is easier for the bidirectional threaded rod 403 to drive the connecting rod 404 to move, and thus it is convenient to drive the pushing rod to move.

[0049] Furthermore, as Figure 7 and Figure 9As shown, one end of the side wall of the U-shaped plate 405 is fixedly connected with a sliding plate 412. Through holes 413 are respectively provided on the side walls at both ends of the support frame 401, and the sliding plate 412 is slidably connected with the through holes 413;

[0050] In this embodiment, through the design of the sliding plate 412 and the through holes 413, the U-shaped plate 405 is supported and guided, so that the pushing roller 406 moves more stably.

[0051] Furthermore, as Figure 7 and Figure 9 shown, mounting grooves 414 are respectively provided at the upper and lower ends of the support frame 401 at the positions of the through holes 413. A second roller 415 is rotatably connected to one end of each mounting groove 414. Limiting grooves 416 are respectively provided at the upper and lower ends of the sliding plate 412, and the limiting grooves 416 are in rolling connection with the second rollers 415;

[0052] In this embodiment, through the design of the second rollers 415 and the limiting grooves 416, the sliding plate 412 moves more easily in the through holes 413. At the same time, the contact surfaces of the second rollers 415 and the limiting grooves 416 are both arranged in an arc shape, so that the second rollers 415 do not swing left and right during rolling, and thus the sliding plate 412 does not swing during movement.

[0053] Furthermore, as Figure 1 and Figure 3 shown, the position sensor 102 includes an infrared emitter 1021 and an infrared receiver 1022. Both the infrared emitter 1021 and the infrared receiver 1022 are fixedly connected to the roller path frame 1, and both the infrared emitter 1021 and the infrared receiver 1022 are electrically connected to the controller 103;

[0054] In this embodiment, through the design of the infrared emitter 1021 and the infrared receiver 1022, the position of the blank is sensed. When the blank moves to the positions of the infrared emitter 1021 and the infrared receiver 1022, the blank will block the signal emitted by the infrared emitter 1021 at this time, so that the infrared receiver 1022 cannot receive the signal emitted by the infrared emitter 1021, and then trigger the controller 103 to turn on the guiding mechanism 2.

[0055] Furthermore, as Figures 3 to 4 shown, a fixed block 104 is fixedly connected to the roller path frame 1 below the mounting frame 201. One end of the bottom of the mounting frame 201 is fixedly connected with a rotating shaft 207, and the fixed block 104 is rotatably connected with the rotating shaft 207;

[0056] In this embodiment, through the design of the fixed block 104 and the rotating shaft 207, the mounting frame 201 can be smoothly rotatably connected with the roller path frame 1.

[0057] Furthermore, asFigure 4 As shown, the guiding roller 202 is located at one end of the synchronous belt 205 extending outside the mounting bracket 201, and is fixedly connected with a synchronous pulley 208, and the synchronous pulley 208 is meshed with the synchronous belt 205;

[0058] In this embodiment, through the design of the synchronous pulley 208, the synchronous belt 205 can smoothly drive and connect adjacent guiding rollers 202 together. In actual use, the temperature of the blank may be very high, and at this time, the high temperature may affect the service life of the synchronous belt 205. Therefore, in actual use, the synchronous pulley 208 can be replaced with a gear according to the situation, and the synchronous belt 205 can be replaced with a chain.

[0059] Further, as Figures 1 to 2 shown, one end of the side wall of the roller table frame 1 is fixedly connected with a plurality of third motors 105, the output end of the third motor 105 is fixedly connected with the conveying roller 101, and the third motor 105 is electrically connected with the controller 103;

[0060] In this embodiment, the conveying roller 101 is driven to rotate through the design of the third motor 105, so as to realize the conveying of the blank. When a certain third motor 105 fails and cannot drive the conveying roller 101 to rotate, the controller 103 will immediately start the shutdown program, so as to stop the conveying of the blank, thereby avoiding the situation of the blank tilting or piling up.

[0061] Working principle: After the blank comes out of the drawing bridge machine, it will enter the roller path. During this process, the position sensor 102 installed above can sense the position of the blank and transmit the data signal to the controller 103. At this time, the controller 103 will be triggered to activate the guiding mechanism 2. Then the electric push rod 204 in the guiding mechanism 2 will open. Under the action of the electric push rod 204, the mounting bracket 201 will rotate. When one end of the two mounting brackets 201 approaches each other, the blank can be guided towards the middle of the roller path. Then the first motor 203 is turned on. Driven by the first motor 203, the guiding roller 202 will rotate. Under the action of the synchronous belt 205, the four guiding rollers 202 in the mounting bracket 201 can rotate synchronously, thus playing a better guiding role for the blank. After being guided, the blank will enter the pushing mechanism 4. Then the second motor 402 is turned on. Driven by the second motor 402, the bidirectional threaded rod 403 will rotate, thereby driving the two connecting rods 404 to move synchronously in opposite directions, and further driving the two pushing rollers 406 to move synchronously in opposite directions, so as to make the two pushing rollers 406 push the blank towards the middle of the roller path. At the same time, the two pushing rollers 406 can clamp the blank without affecting the blank's continuous movement along the roller path. Under the combined action of the guiding mechanism 2 and the pushing mechanism 4, the blank can accurately move to the middle of the roller path and will not tilt during the conveying process. After the blank passes through the pushing mechanism 4, it will enter the protection mechanism 3. When the conveyor roller 101 at a certain place on the roller path frame 1 fails and stops rotating, at this time, the blank may tilt or get stuck during conveying. Then, through the protection plate 301 in the protection mechanism 3, the blank can be effectively prevented from falling off the roller path frame 1. At the same time, through the design of the spring 302 and the damper 303, part of the impact energy generated during the tilting movement of the blank can be consumed, thus preventing the blank from damaging the components on the roller path. During this process, if one end of the blank is still clamped by the two pushing rollers 406, even if a certain conveyor roller 101 fails and stops rotating, the blank will not tilt.

[0062] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A roller table protection device for a continuous casting machine, comprising: A roller frame (1), wherein a plurality of conveying rollers (101) are rotatably connected to the middle of the roller frame (1), a position sensor (102) is provided at the input end of the roller frame (1), and a controller (103) is fixedly connected to one end of the roller frame (1) away from the position sensor (102); A guide mechanism (2), wherein the guide mechanism (2) is arranged on the top of the roller frame (1) and is located adjacent to the position sensor (102); A protection mechanism (3), the protection mechanism (3) being arranged on the top of the roller stand (1) and located at one end of the controller (103); Features: The guide mechanism (2) comprises a mounting frame (201), a guide roller (202), a first motor (203) and an electric push rod (204); there are two mounting frames (201), the two mounting frames (201) are rotatably connected to the two ends of the top of the frame respectively, and are located adjacent to the position sensor (102); the inner wall of the mounting frame (201) is rotatably connected to four guide rollers (202); the four guide rollers (202) are connected to each other by a synchronous belt (205); one end of the top of the mounting frame (201) is fixedly connected to the first motor (203); the output end of the first motor (203) is fixedly connected to the guide roller (202); the end of the top of the mounting frame (201) away from the first motor (203) is rotatably connected to the electric push rod (204); the end of the electric push rod (204) away from the mounting frame (201) is rotatably connected to the first support arm (206); the first support arm (206) is fixedly connected to the roller frame (1); The protection mechanism (3) comprises a protection plate (301), a spring (302), a damper (303) and a second support arm (304); two protection plates (301) are provided and are respectively provided at two ends of the roller frame (1); one end of the side wall of the protection plate (301) is fixedly connected to three springs (302); the protection plate (301) is located inside the spring (302) and is fixedly connected to the damper (303); one end of the spring (302) and the damper (303) away from the protection plate (301) is fixedly connected to the second support arm (304); the second support arm (304) is fixedly connected to the roller frame (1); The roller frame (1) is located below the mounting frame (201) and is fixedly connected to a fixing block (104); one end of the bottom of the mounting frame (201) is fixedly connected to a rotating shaft (207); the fixing block (104) is rotatably connected to the rotating shaft (207); The guide roller (202) is located at one end of the synchronous belt (205) and extends to the outside of the mounting frame (201), and is fixedly connected to a synchronous wheel (208), and the synchronous wheel (208) is meshingly connected to the synchronous belt (205).

2. The continuous casting machine roller table protection device according to claim 1, characterized in that: It further includes a pushing mechanism (4), the pushing mechanism (4) is arranged between the guiding mechanism (2) and the protection mechanism (3), the pushing mechanism (4) includes a support frame (401), a second motor (402), a bidirectional threaded rod (403), a connecting rod (404), a U-shaped plate (405) and a pushing roller (406), the support frame (401) is fixedly connected to the roller track frame (1), one end of the top of the support frame (401) is fixedly connected with a second motor (402), the output end of the second motor (402) is fixedly connected with a bidirectional threaded rod (403), both ends of the bidirectional threaded rod (403) are respectively threadedly connected with a connecting rod (404), the connecting rod (404) is slidably connected to the support frame (401), the bottom of the connecting rod (404) is fixedly connected with a U-shaped plate (405), and one end of the U-shaped plate (405) is rotatably connected with a pushing roller (406).

3. The roller table protection device of a continuous casting machine according to claim 2, characterized in that: A through groove (407) is provided at the top of the support frame (401), the connecting rod (404) is slidably connected to the through groove (407), a collar (408) is fixedly connected to the top of the connecting rod (404), and the collar (408) is threadedly connected to the bidirectional threaded rod (403).

4. A continuous casting machine roller table protection device according to claim 3, characterized in that: Two connecting arms (409) are fixedly connected to the connecting rod (404) below the support frame (401), a first roller (410) is rotatably connected to the top of the connecting arm (409), and grooves (411) are respectively provided on the side walls at both ends of the top of the support frame (401), and the roller is in rolling connection with the grooves (411).

5. The continuous casting machine roller table protection device according to claim 2, characterized in that: A sliding plate (412) is fixedly connected to one end of the side wall of the U-shaped plate (405), through holes (413) are respectively provided on the side walls at both ends of the support frame (401), and the sliding plate (412) is slidably connected to the through holes (413).

6. The roller table protection device of a continuous casting machine according to claim 5, characterized in that: Installation grooves (414) are respectively provided at the upper and lower ends of the support frame (401) at the positions of the through holes (413), a second roller (415) is rotatably connected to one end of the installation groove (414), limiting grooves (416) are respectively provided at the upper and lower ends of the sliding plate (412), and the limiting grooves (416) are in rolling connection with the second roller (415).

7. The roller table protection device of a continuous casting machine according to claim 1, characterized in that: The position sensor (102) includes an infrared emitter (1021) and an infrared receiver (1022), both the infrared emitter (1021) and the infrared receiver (1022) are fixedly connected to the roller track frame (1), and both the infrared emitter (1021) and the infrared receiver (1022) are electrically connected to the controller (103).

8. A continuous casting machine roller table protection device according to claim 1, characterized in that: A plurality of third motors (105) are fixedly connected to one end of the side wall of the roller track frame (1), the output end of the third motor (105) is fixedly connected to the conveyor roller (101), and the third motor (105) is electrically connected to the controller (103).

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