Steel-making continuous casting ingot stripping device

Abstract

The utility model relates to steel billet stripping in a continuous casting area of a steel plant, in particular to a continuous casting stripping device for steelmaking. The utility model relates to an upward jacking type separated ingot stripping mechanism which can enhance the stability in the ingot stripping process. Comprising an upper jacking unit and a lower pressing unit. The jacking unit is located between an outlet of the withdrawal and straightening machine and an inlet of the conveying roller way. The pressing unit is positioned above the steel billet with the dummy bar and is used for pressing the dummy bar; the jacking unit is positioned below a steel billet with a dummy bar and is used for jacking the joint of the dummy bar and the steel billet to realize steel billet stripping; the jacking unit comprises a foundation plate, the foundation plate is fixed on the ground, a jacking oil cylinder and a guide mounting seat are arranged on the foundation plate, a guide shaft is arranged in the guide mounting seat in a sliding manner, and the free end of the guide shaft is connected with the bottom of a U-shaped bracket; the tail end of a piston rod of the jacking oil cylinder is connected with the bottom of the U-shaped support.

Description

Technical Field

[0001] The utility model relates to the stripping of steel billets in the continuous casting area of a steel mill, and particularly to a stripping device for continuous casting in steelmaking. Background Art

[0002] In a steel mill, when starting production in the continuous casting area of steelmaking, a dummy bar device is required to draw the steel billet out of the mold. After the steel billet is drawn to the straightening machine, it is necessary to separate the dummy bar from the head of the steel billet. This separation process usually adopts cutting separation or pressing separation.

[0003] On the one hand, in the process of adopting cutting separation, it is very important to ensure that the flame cutting can cut off in time and the roller table can match and run quickly. However, the head of the steel billet after cutting may still remain on the dummy bar, and at this time, manual cleaning is required. And in the process of ingot stripping, if the head of the steel billet droops after cutting, it may cause the phenomenon of topping the billet, and this kind of problem will also occur if the cutting is not timely.

[0004] On the other hand, when adopting the pressing method for ingot stripping, it is usually necessary to raise the straightening machine. In this process of raising and pressing the billet, due to the large force received, it is easy to cause the head of the steel billet to deflect or bend, so it is necessary to use a crowbar for on-line monitoring manually. Obviously, both of these two ingot stripping methods require high manual supervision during the operation process, and there are many small accidents that need to be handled, resulting in poor stability of the ingot stripping process. Summary of the Invention

[0005] The utility model aims at the defects existing in the prior art and provides a stripping device for continuous casting in steelmaking.

[0006] To achieve the above object, the utility model adopts the following technical scheme, including an upper jacking unit and a lower pressing unit; it is characterized in that the upper jacking unit is located between the outlet of the straightening machine and the inlet of the conveying roller table;

[0007] When the steel billet with the dummy bar enters the conveying roller table from the straightening machine, the lower pressing unit is located above the steel billet with the dummy bar and is used for pressing down the dummy bar; the upper jacking unit is located below the steel billet with the dummy bar and is used for jacking up the connection part of the dummy bar and the steel billet to realize the stripping of the steel billet;

[0008] The upper jacking unit includes a foundation plate 401, which is fixed on the ground and is used to provide support for the whole upper jacking unit; a jacking oil cylinder 402 and a guide mounting seat 403 are arranged on the foundation plate 401, a guide shaft 404 is slidably arranged in the guide mounting seat 403, and the free end of the guide shaft 404 is connected to the bottom of a U-shaped bracket 405; the end of the piston rod of the jacking oil cylinder 402 is connected to the bottom of the U-shaped bracket 405, and the U-shaped bracket 405 moves up and down with the telescopic movement of the piston rod; a jacking roller 406 is rotatably installed in the U-shaped bracket 405 and is used for applying a jacking force (to the part to be jacked).

[0009] Further, the jacking roll 406 is rotatably installed in the U-shaped bracket 405 through a horizontal support shaft 407.

[0010] Further, after the piston rod passes through the through hole at the bottom of the U-shaped bracket 405, the protruding end is locked and positioned with a lock nut 408.

[0011] Further, the pressing unit includes a mounting frame 201, a pressing oil cylinder 202, and a pressing top wheel 203. The mounting frame 201 is used to support the pressing unit. The pressing oil cylinder 202 is installed on the mounting frame 201 to provide a downward pressure. The pressing top wheel 203 is rotatably installed at the end of the piston rod of the pressing oil cylinder 202 and is used to directly apply pressure to the dummy bar.

[0012] Further, a first material level detection unit is provided on the upper jacking unit. The conveying roller table adopts roller-type conveying rollers, and each roller of the roller-type conveying rollers is provided with a second material level detection unit.

[0013] Furthermore, the first material level detection unit and the second material level detection unit have the same structure, and both include a detection bracket 501, a turning shaft 502, a V-shaped swing arm 503, an induction roller 504, a proximity switch 506, and a counterweight 507. The V-shaped swing arm 503 is rotatably installed on the detection bracket 501. The middle of the V-shaped swing arm 503 is rotatably connected to the detection bracket 501 through the turning shaft 502. One end of the V-shaped swing arm 503 is provided with the induction roller 504, and the induction roller 504 contacts the dummy bar when detecting the arrival of the dummy bar. The other end of the V-shaped swing arm 503 is connected with the counterweight 507 to form a seesaw structure centered on the turning shaft 502. The proximity switch 506 is installed on the limit bracket 505 which is installed on the detection bracket 501 for detecting the swing of the V-shaped swing arm 503.

[0014] Furthermore, the counterweight 507 is connected to the end of the V-shaped swing arm 503 through a steel wire rope.

[0015] Furthermore, the limit bracket 505 is fixed to the detection bracket 501, and the proximity switch 506 is installed on the limit bracket 505.

[0016] Furthermore, a limit post 508 is also provided on the limit bracket 505 for limiting the downward movement of the end of the V-shaped swing arm 503 connected to the counterweight 507.

[0017] Furthermore, the detection bracket 501 of the first material level detection unit is installed on the outer wall of the guiding mounting seat 403 (or installed on the foundation plate 401), and the detection bracket 501 of the second material level detection unit is installed on the roller frame of the conveying roller table 6.

[0018] The beneficial effects of the present utility model compared with the prior art.

[0019] The present utility model is a top-pushing type separating ingot-removing mechanism, which can effectively avoid the occurrence of billet pushing phenomenon and enhance the stability of the ingot-removing process. It is installed at the butt joint position between the outlet of the straightening machine and the conveying line, and has the function of detecting the position signal of the billet conveying, so as to accurately know the interface position between the dummy bar and the billet, and then control the top-pushing unit to accurately lift to achieve the ingot-removing function. And the device is provided with a pressing-down unit, which can effectively cooperate with the top-pushing unit to complete the ingot-removing work. Brief Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings and specific embodiments. The protection scope of the present utility model is not limited to the description of the following content.

[0021] Figure 1 It is the front view of a steelmaking continuous casting ingot-removing device.

[0022] Figure 2 It is the front view of a steelmaking continuous casting ingot-removing device in the ingot-removing state.

[0023] Figure 3 It is the front view of the top-pushing unit of a steelmaking continuous casting ingot-removing device.

[0024] Figure 4 It is the right view of the top-pushing unit of a steelmaking continuous casting ingot-removing device.

[0025] Figure 5 It is the three-dimensional view of the top-pushing unit of a steelmaking continuous casting ingot-removing device.

[0026] In the figures, 1, straightening machine; 2, pressing-down unit; 3, billet with dummy bar; 4, top-pushing unit; 5, level detection unit I; 6, conveying roller table; 7, level detection unit II;

[0027] 101, straightening machine frame; 102, upper limit roller; 103, lower limit roller;

[0028] 201, mounting bracket; 202, pressing-down oil cylinder; 203, pressing-down top wheel;

[0029] 301, dummy bar; 302, billet;

[0030] 401, foundation plate; 402, jacking oil cylinder; 403, guiding mounting seat; 404, guiding shaft; 405, U-shaped bracket; 406, jacking roller; 407, support shaft; 408, locking nut;

[0031] 501, detection bracket; 502, turning shaft; 503, V-shaped swing arm; 504, induction roller; 505, limit bracket; 506, proximity switch; 507, counterweight; 508, limit post. Specific Embodiment

[0032] To better understand the technical solution of the present utility model, specific implementation schemes are provided as follows; and the following schemes are only for illustration purposes.

[0033] As Figures 1-5 shown, the ingot stripping device for steelmaking continuous casting of the present utility model includes an upper jacking unit 4 and a lower pressing unit 2; the upper jacking unit 4 is located between the outlet of the straightening machine and the inlet of the conveying roller table. When the billet with the dummy bar enters the conveying roller table from the straightening machine, the lower pressing unit 2 is located above the billet with the dummy bar and is used to press down the dummy bar; the upper jacking unit 4 is located below the billet with the dummy bar and is used to jack up the connection between the dummy bar and the billet to realize ingot stripping of the billet.

[0034] The upper jacking unit 4 includes a foundation plate 401 which is fixed on the ground and is used to provide support for the entire upper jacking unit 4; a jacking oil cylinder 402 and a guiding mounting seat 403 are arranged on the foundation plate 401, a guiding shaft 404 is slidably arranged in the guiding mounting seat 403, and the free end of the guiding shaft 404 is connected to the bottom of a U-shaped bracket 405; the end of the piston rod of the jacking oil cylinder 402 is connected to the bottom of the U-shaped bracket 405, and the U-shaped bracket 405 moves up and down with the telescopic movement of the piston rod; a jacking roller 406 is rotatably installed in the U-shaped bracket 405 and is used to apply a jacking force (to the part to be jacked). The jacking roller 406 is rotatably installed in the U-shaped bracket 405 through a horizontal support shaft 407. After the piston rod passes through the through hole at the bottom of the U-shaped bracket 405, the protruding end is locked and positioned with a locking nut 408.

[0035] Embodiment 1. The lower pressing unit 2 includes a mounting frame 201, a lower pressing oil cylinder 202, and a lower pressing top wheel 203. The mounting frame 201 is used to support the lower pressing unit 2, the lower pressing oil cylinder 202 is installed on the mounting frame 201 and is used to provide a downward pressure; the lower pressing top wheel 203 is rotatably installed at the end of the piston rod of the lower pressing oil cylinder 202 and is used to directly apply pressure to the dummy bar.

[0036] Embodiment 2. A material level detection unit 1 5 is arranged on the upper jacking unit 4, and the conveying roller table adopts a roller-type conveying roller, and each roller of the roller-type conveying roller is provided with a material level detection unit 2 7. Among them, the arrangement of multiple material level detection units 2 7 is to ensure that the position information of the dummy bar can be continuously obtained, which is convenient for timely operation.

[0037] The structures of the first material level detection unit 5 and the second material level detection unit 7 are the same, and both include a detection support 501, a turning shaft 502, a V-shaped swing arm 503, an induction roller 504, a proximity switch 506, and a counterweight 507. A V-shaped swing arm 503 is rotatably installed on the detection support 501, and the middle of the V-shaped swing arm 503 is rotatably connected to the detection support 501 through the turning shaft 502. One end of the V-shaped swing arm 503 is provided with an induction roller 504, and the induction roller 504 contacts the dummy bar when the dummy bar arrives. The other end of the V-shaped swing arm 503 is connected with a counterweight 507, forming a seesaw structure centered on the turning shaft 502. And the counterweight 507 is connected to the end of the V-shaped swing arm 503 through a steel wire rope. The proximity switch 506 limit bracket 505 is installed on the detection support 501 for detecting the swing of the V-shaped swing arm 503. Specifically, the limit bracket 505 is fixed on the detection support 501, and the proximity switch 506 is installed on the limit bracket 505. Specifically, the induction roller 504 is installed at the end of the V-shaped swing arm 503 for directly contacting the dummy bar. The counterweight 507 is installed at the other end of the V-shaped swing arm 503 for balancing the V-shaped swing arm 503 to ensure that it quickly resets when not affected by external forces. When the dummy bar touches the induction roller 504 during transportation, the V-shaped swing arm 503 will swing along the turning shaft 502, triggering the proximity switch 506 to output, that is, sending a signal indicating that the dummy bar has reached this position.

[0038] Embodiment 3: A limit post 508 is further provided on the limit bracket 505 for limiting the downward movement of the end of the V-shaped swing arm 503 connected to the counterweight 507. The limit post prevents the downward movement from exceeding the limit under the action of the counterweight. The detection support 501 of the first material level detection unit 5 is installed on the outer wall of the guide mounting seat 403 or on the foundation plate 401, and the detection support 501 of the second material level detection unit 7 is installed on the roller frame of the conveying roller path 6.

[0039] Embodiment 4: Main component structures and function descriptions of the upper jacking unit 4:

[0040] 1. Foundation plate 401: As the basic support part of the entire upper jacking unit 4, it provides a stable installation foundation for other components.

[0041] 2. Jacking oil cylinder 402: Installed on the foundation plate 401, responsible for providing the driving force required for jacking. The jacking oil cylinder 402 can select a hydraulic cylinder, and the piston rod is pushed to expand and contract through the pressure of hydraulic oil to achieve the jacking action.

[0042] 3. Guide mounting seat 403: Installed on the foundation plate 401, used for installing the guide shaft 404 to ensure that the piston rod of the jacking oil cylinder 402 moves along a predetermined path during the jacking process, maintaining stability and accuracy.

[0043] 4. Guide shaft 404: Installed in the guide mounting base 403 and connected to the bottom of the U-shaped bracket 405 to ensure that the U-shaped bracket 405 moves in a straight line during the jacking process, preventing deviation and shaking.

[0044] 5. U-shaped bracket 405: Installed at the end of the piston rod of the jacking cylinder 402 and moves up and down with the telescoping of the piston rod. The bottom of the U-shaped bracket 405 is connected to the guide shaft 404 to ensure the stability and accuracy of its movement.

[0045] 6. Jacking roller 406: Installed on the U-shaped bracket 405, directly contacting the workpiece to be jacked and applying a jacking force. Ensure uniform pressure distribution.

[0046] Working process of the utility model:

[0047] 1. After the billet and the dummy bar come out of the straightening machine together, the dummy bar is arranged at the front end of the billet and is output from the straightening machine first.

[0048] 2. The billet and the dummy bar are continuously conveyed on the conveying roller table. During the conveying process, the sensing roller of the level detection unit will be triggered by the dummy bar to swing downward along the turning shaft during the conveying process. The downward swing of the sensing roller will trigger the output of the proximity switch signal, and the output of the proximity switch signal indicates that the dummy bar is conveyed to this position.

[0049] 3. During the conveying process of the billet and the dummy bar, multiple level detection units will be triggered, so that the position of the front end of the dummy bar can be determined.

[0050] 4. After determining the position of the dummy bar through the triggered level detection unit, the connection position between the dummy bar and the billet at this time can be accurately located to see if it reaches above the upper jacking unit 4. If it is confirmed to reach above the upper jacking unit 4.

[0051] 5. At this time, control the lower pressing unit 2 to act, so that the lower pressing top wheel presses against the upper end face of the dummy bar, start the upper jacking unit 4 to work, the jacking cylinder of the upper jacking unit 4 works, jack up the docking jacking roller, and the jacking roller jacks up the billet.

[0052] 6. Since the connection head between the dummy bar and the billet is at this jacking roller position, due to the jacking of the jacking roller, the connection between the dummy bar and the billet breaks here, realizing billet stripping.

[0053] During the process of the billet being jacked up, the upper limit roller and the lower limit roller of the straightening machine itself have a limiting effect on the billet being conveyed, which helps to break the billet from the dummy bar and thus realize the stripping work.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; 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 on some or all of the technical features; therefore, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of the present invention.

Claims

1. A steelmaking continuous casting ingot stripping device, comprising an upper jacking unit (4) and a lower pressing unit (2); characterized in that: The upper jacking unit (4) is located between the exit of the straightening machine and the entrance of the conveying roller table; When the billet with the dummy bar enters the conveying roller table (6) from the straightening machine (1), the lower pressing unit (2) is located above the billet (3) with the dummy bar and is used to press down the dummy bar; the upper jacking unit (4) is located below the billet (3) with the dummy bar and is used to jack up the connection part of the dummy bar and the billet to realize billet stripping; The upper jacking unit (4) includes a foundation plate (401) which is fixed on the ground and is used to provide support for the whole upper jacking unit (4); a jacking oil cylinder (402) and a guiding mounting seat (403) are arranged on the foundation plate (401), a guiding shaft (404) is slidably arranged in the guiding mounting seat (403), and the free end of the guiding shaft (404) is connected to the bottom of a U-shaped bracket (405); the end of the piston rod of the jacking oil cylinder (402) is connected to the bottom of the U-shaped bracket (405), and the U-shaped bracket (405) moves up and down with the telescopic movement of the piston rod; a jacking roller (406) is rotatably installed in the U-shaped bracket (405) and is used to apply a jacking force.

2. The continuous casting and ingot stripping device for steelmaking according to claim 1, characterized in that: The jacking roller (406) is rotatably installed in the U-shaped bracket (405) through a horizontal support shaft (407).

3. A steelmaking continuous casting ingot stripping device according to claim 1, characterized in that: After the piston rod passes through the through hole at the bottom of the U-shaped bracket (405), the protruding end is locked and positioned with a locking nut (408).

4. A steelmaking continuous casting ingot stripping device according to any one of claims 1-3, characterized in that: The lower pressing unit (2) includes a mounting frame (201), a lower pressing oil cylinder (202), and a lower pressing top wheel (203). The mounting frame (201) is used to support the lower pressing unit (2), the lower pressing oil cylinder (202) is installed on the mounting frame (201) and is used to provide a downward pressure; the lower pressing top wheel (203) is rotatably installed at the end of the piston rod of the lower pressing oil cylinder (202) and is used to directly apply a pressure to the dummy bar.

5. A steelmaking continuous casting ingot stripping device according to claim 1, characterized in that: A material level detection unit I (5) is arranged on the upper jacking unit (4), and the conveying roller table (6) adopts roller-type conveying rollers, and each roller of the roller-type conveying rollers is provided with a material level detection unit II (7).

6. The continuous casting and ingot stripping device for steelmaking according to claim 5, characterized in that: The material level detection unit I (5) and the material level detection unit II (7) have the same structure, and both include a detection bracket (501), a turning shaft (502), a V-shaped swing arm (503), an induction roller (504), a proximity switch (506), and a counterweight (507); the V-shaped swing arm (503) is rotatably installed on the detection bracket (501), and the middle part of the V-shaped swing arm (503) is rotationally connected to the detection bracket (501) through the turning shaft (502); one end of the V-shaped swing arm (503) is provided with the induction roller (504), and the induction roller (504) contacts the dummy bar when detecting the arrival of the dummy bar; the other end of the V-shaped swing arm (503) is connected with the counterweight (507); a seesaw structure centered on the turning shaft (502) is formed; the proximity switch (506) is installed on the detection bracket (501) through a limit bracket (505) and is used to detect the swing of the V-shaped swing arm (503).

7. A steelmaking continuous casting ingot stripping device according to claim 6, characterized in that: The counterweight (507) is connected to the end of the V-shaped swing arm (503) through a steel wire rope.

8. A steelmaking continuous casting ingot stripping device according to claim 6, characterized in that: The limit bracket (505) is fixed on the detection bracket (501), and the proximity switch (506) is installed on the limit bracket (505).

9. A steelmaking continuous casting ingot stripping device according to claim 6, characterized in that: A limit post (508) is further provided on the limit bracket (505) for limiting the downward movement of one end of the V-shaped swing arm (503) connected to the counterweight (507).

10. A steelmaking continuous casting ingot stripping device according to claim 6, characterized in that: The detection bracket (501) of the first material level detection unit (5) is installed on the outer wall of the guiding mounting seat (403), and the detection bracket (501) of the second material level detection unit (7) is installed on the roller frame of the conveying roller path (6).

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