Ladle furnace electrode base mounting mechanism

Abstract

The utility model relates to the technical field of ladle furnaces, and particularly discloses a ladle furnace electrode base mounting mechanism which comprises a lifting hydraulic cylinder, the output end of the lifting hydraulic cylinder is vertically upward and is connected with a horizontal fixing plate, the horizontal fixing plate is connected with three clamping heads, the three clamping heads clamp three electrodes respectively, a supporting frame is arranged on the horizontal fixing plate, and the supporting frame is connected with the lifting hydraulic cylinder. The top end of the supporting frame is connected with the top flat plate, the three adjusting hydraulic cylinders are arranged on the top flat plate and correspond to the three electrodes respectively, the heights of the three electrodes can be independently adjusted, the independence and pertinence of electrode adjustment are improved, meanwhile, each electrode is adjusted through the upper lifting mechanism and the lower lifting mechanism, and therefore the electrode adjusting efficiency is improved. And the output end of the adjusting hydraulic cylinder vertically and downwards penetrates through the top flat plate and is connected with the adjusting clamp, the electrode can be subjected to multi-point-position clamping and fixing in combination with clamping of the clamping head on the middle portion of the electrode, and the clamping and fixing effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of ladle furnaces, and particularly to an installation mechanism for the electrode bases of ladle furnaces. Background Art

[0002] The ladle refining furnace is the main secondary refining equipment in iron and steel production. Due to its simple equipment, low investment cost, flexible operation and good refining effect, it has become a rising star in the metallurgical industry and has been widely applied and developed at home and abroad. The ladle refining furnace mainly relies on the white slag in the ladle. In an atmosphere with low oxygen content (oxygen content is 5%), argon gas is blown into the ladle for stirring, and the molten steel that has passed through the primary refining furnace is heated by graphite electrodes for refining.

[0003] During the process of heating the molten steel in the ladle with graphite electrodes, the graphite electrodes will continuously wear. Therefore, it is necessary to continuously adjust the vertical height of the electrodes to maintain the heating of the molten steel. In the existing installation structure of the electrode bases of ladle furnaces, the three electrodes are lifted and lowered together by a single hydraulic cylinder structure and cannot be adjusted independently. Moreover, the stroke of a single hydraulic cylinder has a large limitation. When the electrodes are worn to a certain extent, the electrodes may reach the lower limit of the stroke but still cannot contact the steel slag, resulting in the situation where heating cannot be carried out. Utility Model Content

[0004] This application provides an installation mechanism for the electrode bases of ladle furnaces, which solves the technical problems in the prior art that the three electrodes are lifted and lowered together by a single hydraulic cylinder structure, cannot be adjusted independently, and the stroke of a single hydraulic cylinder has a large limitation. When the electrodes are worn to a certain extent, the electrodes may reach the lower limit of the stroke but still cannot contact the steel slag, resulting in the situation where heating cannot be carried out. It realizes the independent lifting of the three electrodes, thus facilitating the adjustment of a single electrode. Moreover, each electrode is adjusted by two sets of lifting mechanisms up and down, which can increase the adjustment stroke. At the same time, each lifting mechanism can apply force to and fix the electrode, thereby improving the reliability of the electrode fixation.

[0005] This application provides an installation mechanism for the electrode bases of ladle furnaces, including a lifting hydraulic cylinder. The output end of the lifting hydraulic cylinder is vertically upward and is connected to a horizontal fixing plate. The horizontal fixing plate is connected with three clamping heads, and the three clamping heads respectively clamp the three electrodes.

[0006] A support frame is arranged on the horizontal fixing plate. The top end of the support frame is connected to a top flat plate. Three adjusting hydraulic cylinders are arranged on the top flat plate, and the three adjusting hydraulic cylinders respectively correspond to the three electrodes.

[0007] The output end of the adjusting hydraulic cylinder vertically penetrates the top flat plate and is connected to an adjusting clamp, and the adjusting clamp clamps the top end of the corresponding electrode.

[0008] Further, the clamping head includes a clamping base, which is connected to the horizontal fixing plate. The clamping base is perpendicular to the corresponding electrode. On one side of the clamping base facing the electrode, there are two clamping brackets. The two clamping brackets are respectively arranged at both ends of the clamping base. A bidirectional lead screw is arranged between the two clamping brackets, and one end of the bidirectional lead screw is connected to a lead screw motor.

[0009] Two nut seats are arranged on the bidirectional lead screw. The two nut seats are respectively connected to a clamping seat. The moving track of the clamping seat passes through the axis of the electrode. At one end of the clamping seat facing the electrode, there is a fixed clamp, and the fixed clamp is sleeved on the outer periphery of the electrode.

[0010] Further, the adjusting fixture includes a clamping hydraulic cylinder. The clamping hydraulic cylinder is horizontally arranged and parallel to the bidirectional lead screw. The output end of the clamping hydraulic cylinder faces the electrode and is connected to a top clamp, and the top clamp is sleeved on the outer periphery of the top of the electrode.

[0011] Further, the two clamping seats are respectively located on the upper and lower sides of the bidirectional lead screw. The distance between the two fixed clamps and the distance between the upper fixed clamp and the top clamp are the same, and the clamping hydraulic cylinder and the lower clamping seat are on the same side of the electrode.

[0012] The technical solution provided by this application has at least the following technical effects or advantages:

[0013] 1. Due to the adoption of a lifting hydraulic cylinder and three adjusting hydraulic cylinders, the lifting hydraulic cylinder can drive the three electrodes to lift together, and the three adjusting hydraulic cylinders correspond to the three electrodes respectively, and can independently adjust the heights of the three electrodes, improving the independence and pertinence of electrode adjustment. Each electrode is adjusted by two sets of lifting mechanisms up and down, which can increase the adjustment stroke.

[0014] 2. Due to the adoption of a clamping head and an adjusting fixture, the clamping head clamps and fixes the middle part of the electrode, and the adjusting fixture clamps and fixes the top of the electrode. Therefore, by setting the clamping head and the adjusting fixture, the electrode can be clamped and fixed at multiple points, improving the clamping and fixing effect. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the ladle furnace electrode base installation mechanism in the embodiment of this application;

[0016] Figure 2 It is a schematic diagram of a partial structure of the ladle furnace electrode base installation mechanism in the embodiment of this application;

[0017] Figure 3 In the embodiment of this application Figure 2 It is an enlarged schematic diagram of the structure at A;

[0018] Figure 4 This is a schematic structural diagram of the adjusting fixture in the embodiment of the present application.

[0019] In the figure: 1, lifting hydraulic cylinder; 2, horizontal fixing plate; 3, clamping head; 4, electrode; 5, support frame; 6, top flat plate; 7, adjusting hydraulic cylinder; 8, adjusting fixture;

[0020] 301, clamping base; 302, clamping bracket; 303, bidirectional lead screw; 304, lead screw motor; 305, nut seat; 306, clamping seat; 307, fixed clamp;

[0021] 801, clamping hydraulic cylinder; 802, top clamp. Specific embodiments

[0022] The embodiment of the present application discloses a ladle furnace electrode base installation mechanism. By setting a lifting hydraulic cylinder 1 and three adjusting hydraulic cylinders 7, the lifting hydraulic cylinder 1 can drive the three electrodes 4 to lift together, and the three adjusting hydraulic cylinders 7 correspond to the three electrodes 4 respectively, and can independently adjust the heights of the three electrodes 4, improving the independence and pertinence of the electrode 4 adjustment. At the same time, by setting a clamping head 3 and an adjusting fixture 8, the clamping head 3 clamps and fixes the middle part of the electrode 4, and the adjusting fixture 8 clamps and fixes the top of the electrode 4. Therefore, by setting the clamping head 3 and the adjusting fixture 8, the electrode 4 can be clamped and fixed at multiple points, improving the clamping and fixing effect.

[0023] In order to better understand the above technical solution, the following will combine the specification drawings and specific embodiments to elaborate on the above technical solution in detail.

[0024] Refer to Figures 1 to 4 , a ladle furnace electrode base installation mechanism provided by the present utility model includes a lifting hydraulic cylinder 1. The output end of the lifting hydraulic cylinder 1 is vertically upward and connected with a horizontal fixing plate 2. The horizontal fixing plate 2 is connected with three clamping heads 3. The three clamping heads 3 respectively clamp three electrodes 4. A support frame 5 is arranged on the horizontal fixing plate 2. The top end of the support frame 5 is connected with a top flat plate 6. Three adjusting hydraulic cylinders 7 are arranged on the top flat plate 6. The three adjusting hydraulic cylinders 7 correspond to the three electrodes 4 respectively. The output end of the adjusting hydraulic cylinder 7 vertically penetrates the top flat plate 6 and is connected with an adjusting fixture 8. The adjusting fixture 8 clamps the top end of the corresponding electrode 4.

[0025] In this embodiment, the clamping head 3 clamps and fixes the middle part of the electrode 4, and the adjusting fixture 8 clamps and fixes the top of the electrode 4. Therefore, by setting the clamping head 3 and the adjusting fixture 8, the electrode 4 can be clamped and fixed at multiple points, improving the clamping and fixing effect.

[0026] Moreover, when it is necessary to adjust the relative position between the electrode 4 and the clamping head 3, the adjusting fixture 8 is kept clamped, the extending length of the lifting hydraulic cylinder 1 remains unchanged, the clamping head 3 is loosened, and the extending length of the adjusting hydraulic cylinder 7 changes, so that the position of the electrode 4 relative to the clamping head 3 changes, thereby realizing the independent adjustment of the height of a single electrode 4.

[0027] When it is necessary to adjust the heights of multiple electrodes 4 together, the clamping head 3 is kept clamped, the extending length of the adjusting hydraulic cylinder 7 remains unchanged, and at the same time, the adjusting fixture 8 is kept in a clamped state, and the extending length of the lifting hydraulic cylinder 1 changes to drive the multiple electrodes 4 to move up and down together.

[0028] Since the electrode 4 is clamped at multiple points, during the independent adjustment of the electrode 4, the change in the relative position between the electrode 4 and the clamping head 3 is always within a controllable range, thereby improving the safety of the adjustment.

[0029] Further, referring to Figure 2 and Figure 3 , the clamping head 3 includes a clamping base 301. The clamping base 301 is connected to the horizontal fixing plate 2. The clamping base 301 is perpendicular to the corresponding electrode 4. On one side of the clamping base 301 facing the electrode 4, two clamping brackets 302 are provided. The two clamping brackets 302 are respectively arranged at both ends of the clamping base 301. A bidirectional lead screw 303 is arranged between the two clamping brackets 302. One end of the bidirectional lead screw 303 is connected to a lead screw motor 304. Two nut seats 305 are arranged on the bidirectional lead screw 303. The two nut seats 305 are respectively connected to clamping seats 306. The moving track of the clamping seat 306 passes through the axis of the electrode 4. At one end of the clamping seat 306 facing the electrode 4, a fixed clamp 307 is provided. The fixed clamp 307 is sleeved on the outer periphery of the electrode 4.

[0030] Similarly, referring to Figure 4 , the adjusting fixture 8 includes a clamping hydraulic cylinder 801. The clamping hydraulic cylinder 801 is horizontally arranged and parallel to the bidirectional lead screw 303. The output end of the clamping hydraulic cylinder 801 faces the electrode 4 and is connected to a top clamp 802. The top clamp 802 is sleeved on the outer periphery of the top of the electrode 4. The two clamping seats 306 are respectively located on the upper and lower sides of the bidirectional lead screw 303. The distance between the two fixed clamps 307 and the distance between the upper fixed clamp 307 and the top clamp 802 are the same, and the clamping hydraulic cylinder 801 and the lower clamping seat 306 are on the same side of the electrode 4.

[0031] There are two contact positions between the clamping head 3 and the electrode 4, and these two contact positions are offset vertically and horizontally. There is another contact position between the adjusting fixture 8 and the electrode 4. That is to say, there are a total of three contact positions among the clamping head 3, the adjusting fixture 8, and the electrode 4. These three contact positions are located in the upper right, middle left, and lower right respectively. The upper right contact point and the lower right contact point apply a rightward force to the electrode 4, and the middle left contact point applies a leftward force to the electrode 4. The resultant force of the rightward forces applied by the upper right contact point and the lower right contact point cancels out the leftward force applied by the middle left contact point, thereby stabilizing the electrode 4.

[0032] The clamping head 3 and the adjusting fixture 8 apply multiple clamping points to the electrode 4, making the electrode 4 more stable.

[0033] In summary, in this embodiment, by setting the lifting hydraulic cylinder 1 and three adjusting hydraulic cylinders 7, the lifting hydraulic cylinder 1 can drive the three electrodes 4 to lift together, and the three adjusting hydraulic cylinders 7 correspond to the three electrodes 4 respectively, and can independently adjust the heights of the three electrodes 4, improving the independence and pertinence of the adjustment of the electrodes 4.

[0034] At the same time, by setting the clamping head 3 and the adjusting fixture 8, the clamping head 3 clamps and fixes the middle part of the electrode 4, and the adjusting fixture 8 clamps and fixes the top of the electrode 4. Therefore, by setting the clamping head 3 and the adjusting fixture 8, the electrode 4 can be clamped and fixed at multiple positions, improving the clamping and fixing effect.

[0035] Moreover, the clamping head 3 and the adjusting fixture 8 apply multiple clamping points to the electrode 4. Among them, there are two contact positions between the clamping head 3 and the electrode 4, and these two contact positions are offset vertically and horizontally. There is another contact position between the adjusting fixture 8 and the electrode 4. That is to say, there are a total of three contact positions among the clamping head 3, the adjusting fixture 8, and the electrode 4. These three contact positions are located in the upper right, middle left, and lower right respectively. The upper right contact point and the lower right contact point apply a rightward force to the electrode 4, and the middle left contact point applies a leftward force to the electrode 4. The resultant force of the rightward forces applied by the upper right contact point and the lower right contact point cancels out the leftward force applied by the middle left contact point, thereby stabilizing the electrode 4.

[0036] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

[0037] The above is only the preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its concept of the present application, makes equivalent replacements or changes, and should be covered by the protection scope of the present application.

Claims

1. A ladle furnace electrode base mounting mechanism, characterized in that: It comprises a lifting hydraulic cylinder (1), the output end of the lifting hydraulic cylinder (1) is vertically upward and connected to a horizontal fixing plate (2), the horizontal fixing plate (2) is connected to three clamping heads (3), and the three clamping heads (3) respectively clamp three electrodes (4); A support frame (5) is arranged on the horizontal fixed plate (2), the top of the support frame (5) is connected to a top plate (6), and three adjusting hydraulic cylinders (7) are arranged on the top plate (6), and the three adjusting hydraulic cylinders (7) correspond to the three electrodes (4) respectively; The output end of the adjusting hydraulic cylinder (7) passes vertically downward through the top plate (6) and is connected to an adjusting fixture (8), and the adjusting fixture (8) clamps the top end of the corresponding electrode (4).

2. The ladle furnace electrode base mounting mechanism according to claim 1, characterized in that: The clamping head (3) includes a clamping base (301), the clamping base (301) is connected to the horizontal fixing plate (2), the clamping base (301) is perpendicular to the corresponding electrode (4), and two clamping brackets (302) are arranged on a side of the clamping base (301) opposite to the electrode (4), the two clamping brackets (302) are respectively arranged at two ends of the clamping base (301), a bidirectional lead screw (303) is passed between the two clamping brackets (302), and one end of the bidirectional lead screw (303) is connected to a lead screw motor (304).

3. The ladle furnace electrode base mounting mechanism according to claim 2, characterized in that: Two nut seats (305) are arranged on the bidirectional lead screw (303), and the two nut seats (305) are respectively connected to a clamping seat (306). The moving track of the clamping seat (306) passes through the axis of the electrode (4). A fixing clamp (307) is arranged at one end of the clamping seat (306) facing the electrode (4), and the fixing clamp (307) is sleeved on the outer periphery of the electrode (4).

4. A ladle furnace electrode base mounting mechanism as claimed in claim 3, characterized in that: The adjusting fixture (8) comprises a clamping hydraulic cylinder (801), wherein the clamping hydraulic cylinder (801) is arranged horizontally and parallel to the bidirectional lead screw (303), wherein the output end of the clamping hydraulic cylinder (801) faces the electrode (4) and is connected to a top clamp (802), wherein the top clamp (802) is sleeved on the top periphery of the electrode (4).

5. The ladle furnace electrode base mounting mechanism according to claim 4, characterized in that: The two clamping seats (306) are respectively located on the upper and lower sides of the bidirectional screw (303), the distance between the two fixed clamps (307) and the distance between the upper fixed clamp (307) and the top clamp (802) are the same, and the clamping hydraulic cylinder (801) and the lower clamping seat (306) are on the same side of the electrode (4).

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