An electric furnace electrode extension device

Abstract

This application discloses an electric furnace electrode extension device, relating to the field of electrode extension equipment technology. By optimizing and improving the structure of existing graphite electrode extension devices, a tube that can be disassembled as needed is used to guide the insertion of the electrode. The telescopic rod used to clamp and fix the electrode in the extension device is modified into a rod that can be automatically and manually extended, ensuring that the extension device still has the function of extending the electrode after failure. This achieves the technical effect that the electric furnace electrode extension device can assist in the efficient fixing and alignment of new and old electrodes, and that electrode misalignment is not easy to occur during extension. Even if a failure occurs, the electrode can be easily transported away or manually extended.

Description

Technical Field

[0001] This invention relates to the field of electrode extension equipment technology, and more particularly to an electric furnace electrode extension device. Background Technology

[0002] In the steelmaking process, the electric furnace needs to provide heat energy through graphite electrodes. The graphite electrodes will gradually wear down and shorten during use. The graphite electrodes are cylindrical in shape, with tapered threaded holes at both ends for installing combination joints and hoisting accessories. In order to meet the usage requirements and save costs, it is necessary to extend the old electrodes after use. After fixing the old and new electrodes together with the combination joints, they are installed into the support crossarm for continued use.

[0003] When extending the electrode, the old electrode after use needs to be hoisted onto the platform and clamped and fixed using the hoisting accessory (the hoisting accessory is a frustoconical block with an inverted U-shaped hanging rod on the top and threads on the side wall). After removing the hoisting accessory, the new electrode with the bottom assembled with the combination connector is moved to directly above the old electrode using the hoisting accessory. Then, the combination and tightening of the new and old electrodes is completed manually with the help of tools or by using automated tightening equipment.

[0004] Manually tightening the old and new electrodes is difficult, inefficient, labor-intensive, dangerous, and has a high probability of misalignment, which is not conducive to the efficient execution of tightening combination operations. While automated tightening equipment can reduce labor intensity and improve work efficiency to some extent, the problems of low alignment efficiency and poor alignment accuracy during electrode insertion and tightening are difficult to solve. Moreover, once misaligned, the threads are easily damaged, resulting in the scrapping of both new and old electrodes and seriously affecting the progress of on-site operations. In addition, the stability of automated tightening equipment also seriously restricts the smooth progress of electrode extension operations. Once a malfunction occurs, the electrode will most likely be fixed on the automated tightening equipment, making it difficult to remove or lift it away. This not only seriously slows down the work progress but also occupies the tightening station and hinders emergency handling.

[0005] Therefore, there is a need for an electric furnace electrode extension device that can help to efficiently fix and align new and old electrodes, prevent electrode misalignment during extension, and allow for easy removal or manual extension of the electrodes even if the tightening equipment malfunctions. Summary of the Invention

[0006] This application provides an electric furnace electrode extension device, which solves the technical problems in the prior art where the graphite electrode is installed and tightened by a tightening device, resulting in low efficiency, easy misalignment, and easy damage to the electrode threads. Furthermore, a failure of the tightening device would seriously hinder the progress of the operation. The electric furnace electrode extension device can assist in the efficient fixing and alignment of new and old electrodes, and it is less likely to cause electrode misalignment during extension. Even if a failure occurs, the electrode can be easily moved away or manually extended.

[0007] This application provides an electric furnace electrode extension device, including a support platform with an insertion hole; it also includes a clamping guide assembly, a clamping rotation assembly, an insertion limiting assembly, and a limiting fixing assembly; The clamping guide assembly is used to guide the movement of the electrode and clamp and fix the electrode in a timely manner. It is positioned on the top of the support platform and includes a combined functional tube composed of two upright rigid plates spliced ​​together, as well as a sliding drive body for driving one of the upright rigid plates to move laterally. The combined functional tube is a vertical rigid tube with a through groove on the side wall for the clamping and rotating components to pass through. The top of the through groove has a channel groove for the insertion of the limiting components. The top of the combined functional tube has three positioning notches with straight grooves. The main body of the clamping and rotating assembly is a horizontal telescopic rod with a cylindrical wheel at the end, which is used to clamp and drive the electrode inserted into the combined functional tube to rotate in a timely manner. There are two clamping and rotating assemblies, which are symmetrically arranged and work together. The insertion limiting component is used to limit the rotation of the hoisting parts and thus assist the hoisting parts in being removed from the electrode. The main body is a horizontally placed and controlled laterally moving rigid rod. The main body of the limiting and fixing component is a rigid circular ring, which is embedded in the positioning notch. The inner ring is provided with multiple telescopic rods, which are controlled and fixed to the side wall of the electrode in a timely manner. The telescopic rod used to clamp and fix the electrode consists of an automatic telescopic rod and a manual telescopic rod.

[0008] Furthermore, the combined functional tube includes a fixed vertical plate and a sliding vertical plate; the inner contour of the combined functional tube is adapted to the outer wall of the electrode. The fixed plate is a vertically placed rigid arc-shaped plate, fixed to the top of the support platform near the insertion hole; The channel groove is a vertically arranged elongated through groove; The sliding plate is a vertically placed rigid arc-shaped plate that slides and is positioned on the support platform in the horizontal direction. Under the action of the sliding drive body, it moves closer to or away from the fixed plate. When the sliding plate moves closer to the fixed plate, it forms a vertical tube together with the fixed plate.

[0009] Furthermore, the combined functional tube includes a flared tube section and a straight tube section; the flared tube section is a flared tube body that is larger at the top and smaller at the bottom; the straight tube section is a vertically placed round tube. The electrode inserted into the combined functional tube is guided into the straight tube section by the horn tube section; the positioning notch is a vertically set straight groove with a length greater than 30 cm, used to support the limiting and fixing component and restrict the rotation of the limiting and fixing component.

[0010] Furthermore, the clamping and rotating assembly is positioned on the top surface of the support platform and includes a support frame, a telescopic support rod, an abutment column frame, and a vertical abutment column; The support frame is fixed to the ground; The telescopic support rod is a horizontal telescopic rod that is controlled to extend and retract. One end is fixed to the support frame. When it extends and retracts, it moves the vertical contact column closer to or away from the electrode. The abutment column support is a rigid bracket, fixed to the other end of the telescopic support rod, used to support the vertical abutment column; The vertical contact post is a rigid vertical column, and there are two of them. They are rotatably connected to the vertical contact post around their own axis. At least one of them is controlled to rotate, and when it rotates, it drives the electrode it is contacting to rotate.

[0011] Furthermore, the insertion limiting assembly includes a base frame, a vertical telescopic rod, a floating column, a guide tube, a horizontal insertion rod, and a lateral movement drive assembly; The base frame is fixed to the top surface of the support platform; The vertical telescopic rod is fixed to the top of the base frame and can extend and retract in a controlled manner; The floating column is a vertical telescopic rod with a built-in tension spring. Under the constraint of the built-in tension spring, it is normally in a retracted state. The bottom of the floating column is fixed to the top of the vertical telescopic rod; The guide tube is a horizontally placed rigid square tube, fixed to the top of the floating column; The horizontal insertion rod is a horizontally placed rigid square rod that passes through the guide tube and is slidably positioned on the guide tube. Under the drive of the horizontal movement drive assembly, it slides along the axial direction of the guide tube. The horizontal insertion rod passes through the channel groove, and the difference between its width and the width of the channel groove is less than 4 mm; the length of the channel groove is more than 3 times the height of the horizontal insertion rod.

[0012] Furthermore, the limiting and fixing component includes a supporting ring; The supporting ring is a rigid ring body, and three fixed top rods are fixed on its inner ring; the fixed top rods are equally spaced and are horizontally arranged rigid telescopic rods; The outer ring of the support ring is provided with 3 embedded rods; The embedded rod is a horizontally placed round rod; At least two top horizontal plates are fixed to the top of the support ring; the top horizontal plates are rigid plates arranged horizontally and fixed to the top surface of the support ring, with their length direction being the same as the radial direction of the support ring, and are used to cooperate with the support rod to lift the support ring in a timely manner. The support rod is a vertical rigid telescopic rod, which corresponds one-to-one with the top horizontal plate. It is located directly below the top horizontal plate and close to the combined functional tube. It is controlled to extend and retract to lift the support ring as needed.

[0013] Furthermore, the horizontal telescopic body, telescopic support rod, and fixed top rod are all assembled from automatic telescopic rods and manual telescopic rods.

[0014] Preferably, the fixed top rod, the horizontal telescopic body, and the telescopic carrier are all equipped with pressure sensors that are connected to the control unit, which can monitor the extrusion force on the electrode in a timely manner.

[0015] Preferably, the horizontally placed insertion rod is wider at the top and narrower at the bottom, and is used as a scraper; The horizontal insertion rod is hollow inside, and a ventilation groove is provided on one side near the bottom. The ventilation groove is a straight groove that communicates with the internal space of the horizontally placed insertion rod. A filter screen for filtering out impurities is positioned at the communication location. The internal space of the horizontally placed insertion rod is connected to the air pump assembly.

[0016] Preferably, it also includes a vertical scraper assembly for cleaning debris from the sidewalls of the old electrode; the vertical scraper assembly is positioned on one side of the combined functional tube, and the main body is a vertical scraper that can move laterally. When in use, it is inserted into the gap between the fixed plate and the sliding plate and abuts against the sidewalls of the old electrode to clean it.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: By optimizing and improving the structure of existing graphite electrode extension devices, a detachable tube is used to guide the insertion of electrodes. The telescopic rod used to clamp and fix the electrodes in the extension device is modified into a rod that can be automatically or manually extended, ensuring that the extension device still functions to extend electrodes even in case of failure. This effectively solves the technical problems of low efficiency, easy misalignment, and easy damage to electrode threads when tightening graphite electrodes with existing tightening equipment. Furthermore, it enables the electric furnace electrode extension device to assist in the efficient fixing and alignment of new and old electrodes, prevents electrode misalignment during extension, and allows for convenient removal or manual extension of electrodes even in case of failure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electric furnace electrode extension device of this application; Figure 2This is a schematic diagram showing the positional relationship of the components of the electric furnace electrode extension device of this application; Figure 3 This is a schematic diagram of the external structure of the electric furnace electrode extension device of this application; Figure 4 A schematic diagram showing the state of the process of loading the old electrode into the electric furnace electrode extension device of this application; Figure 5 A schematic diagram showing the state when the old electrode is fixed on the electric furnace electrode extension device of this application; Figure 6 Here is a simplified structural diagram of a floating column; Figure 7 This is a schematic diagram showing the state after the old and new electrodes are combined; Figure 8 This is a structural diagram of the limiting and fixing component; Figure 9 A schematic diagram showing the positional relationship between the clamping guide assembly, the clamping rotating assembly, and the vertical scraper assembly; Figure 10 This is a schematic diagram showing the layout of the vertical scraper assembly.

[0019] In the picture: Old electrode 001, New electrode 002, Combination joint 003, Lifting joint 004, Hanging rod 005, Hook 006, Support platform 100, Penetration hole 110, Base frame 120, Monitoring component 130, Horn tube section 201, Straight tube section 202, Positioning notch 203, Fixed upright plate 210, Through slot 211, Channel slot 212, Sliding upright plate 220, Vertical support frame 231, Horizontal telescopic body 232, Support frame 310, Telescopic support rod 320, Column support frame 330 340 vertical contact post, 410 base frame, 420 vertical telescopic rod, 430 floating post, 440 guide tube, 450 horizontal insertion rod, 451 ventilation slot, 460 air pump assembly, 470 horizontal movement drive assembly, 500 support ring, 510 fixed top rod, 520 embedded rod, 530 extension rod, 540 quick connector, 550 top horizontal plate, 560 support rod, 610 vertical scraper, 620 fixed frame, 630 telescopic positioning rod, 640 floating telescopic rod, 650 air jet plate. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0021] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1

[0024] like Figures 1 to 5 As shown, the electric furnace electrode extension device of this application is used to fix the old electrode 001 and the new electrode 002 together using the combination joint 003 in conjunction with the hoisting equipment with hook 006 and the hoisting accessories fixed on the electrode. It includes a support platform 100, a clamping guide assembly, a clamping rotation assembly, an insertion limit assembly, a limit fixing assembly, a power assembly, and a control unit.

[0025] The electrode is cylindrical with tapered threaded holes at both ends. The combination connector 003 is a double-conical shape (thin at both ends and thick in the middle), with tapered threads machined on its surface. The threads are adapted to the threaded holes on the electrode. Both ends are screwed into the old electrode 001 and the new electrode 002 to fix them together. The hoisting accessories include a hoisting connector 004 and a hanging rod 005. The hoisting connector 004 is a truncated cone shape, wider at the top and narrower at the bottom. Its side wall has threads that match the threaded holes on the electrode. When in use, it is tightened and fixed to the top of the electrode. After installation and fixing in the threaded holes of the electrode, the top of the hoisting connector 004 is lower than or equal to the top of the electrode. The hanging rod 005 is an inverted U-shaped rigid rod, fixed to the top of the hoisting connector 004, for easy hooking of the hoisting accessories by the hook 006. The hook 006 of the hoisting equipment is rotatably connected to the hoisting rope. The hoisting equipment with hook 006, the hoisting accessories, and the combination connector 003 are all existing technologies and will not be described in detail here.

[0026] The support platform 100 is a horizontally suspended platform, positioned on the ground by a base frame 120; the base frame 120 is a rigid support; the top of the support platform 100 is provided with an insertion hole 110 for electrodes to pass through; the insertion hole 110 is a through hole; the support platform 100 is also provided with a monitoring component 130 for monitoring the operation of other components of the electric furnace electrode extension device; the monitoring component 130 is existing technology.

[0027] The clamping guide assembly is used to guide the movement of the electrode and clamp and fix the electrode in a timely manner. It is positioned on the top of the support platform 100 and includes a combined functional tube composed of two upright rigid plates spliced ​​together. It also includes a sliding drive body used to assist one of the upright rigid plates in lateral movement to complete the splicing of the combined functional tube. The combined functional tube is a vertically oriented rigid tube, comprising a flared tube section 201 and a straight tube section 202. The flared tube section 201 is a flared tube that is wider at the top and narrower at the bottom. The straight tube section 202 is a vertically oriented round tube. The electrode inserted into the combined functional tube is guided into the straight tube section 202 through the flared tube section 201. The top surface of the flared tube section 201 is provided with three positioning notches 203. The positioning notches 203 are vertically oriented straight grooves with a length greater than 30 cm, used to support the limiting and fixing components and restrict their rotation. The combined functional tube includes a fixed vertical plate 210 and a sliding vertical plate 220; the inner contour of the combined functional tube is adapted to the outer wall of the electrode. The fixed plate 210 is a vertically placed rigid arc-shaped plate, fixed to the top of the support platform 100 near the insertion hole 110. The fixed upright plate 210 has a through groove 211 near the bottom on its side wall for inserting a clamping rotating component. The through groove 211 is a through groove, and its top has a channel groove 212 for inserting a limiting component. The channel groove 212 is a vertically arranged elongated through groove. The sliding plate 220 is a vertical rigid arc-shaped plate that slides and is positioned on the support platform 100 in the horizontal direction. Under the action of the sliding drive body, it moves closer to or away from the fixed plate 210. When the sliding plate 220 moves closer to the fixed plate 210, it and the fixed plate 210 together form a vertical tube and clamp the electrode inserted into the tube. The sliding vertical plate 220 also has a through groove 211 near the bottom on its side wall for inserting the clamping rotating assembly; The main body of the sliding drive is a horizontally placed rigid telescopic rod, which is controlled to extend and retract, thereby driving the sliding upright plate 220 to slide. The sliding drive includes an upright frame 231 and a horizontally placed telescopic body 232. The upright frame 231 is a rigid frame, fixed on the top surface of the support platform 100, and is used to support and fix the horizontally placed telescopic body 232. The horizontally placed telescopic body 232 is a rod structure, which is controlled to extend and retract, with one end fixed to the side wall of the upright frame 231 and the other end fixed to the side wall of the sliding upright plate 220.

[0028] The clamping and rotating assembly is used to clamp and control the rotation of the electrode inserted into the combined functional tube in a timely manner. There are two clamping and rotating assemblies, which are symmetrically arranged and operate in coordination. The clamping and rotating assembly is positioned on the top surface of the support platform 100 and includes a support frame 310, a telescopic support rod 320, an abutment column frame 330, and a vertical abutment column 340. The support frame 310 is fixed to the ground and is a rigid block or rigid bracket, which serves to bear and support the load. The telescopic support rod 320 is a horizontal telescopic rod that is controlled to extend and retract. One end is fixed to the support frame 310. When it extends and retracts, it drives the vertical contact column 340 to move closer to or away from the electrode. The abutment column support 330 is a rigid support, fixed to the other end of the telescopic support rod 320, used to support the vertical abutment column 340, preferably a U-shaped rigid frame; The vertical abutment post 340 is a vertical rigid column, and there are two of them. They are rotatably connected to the vertical abutment post 340 around their own axis. At least one of them rotates under the coordinated control of the power component and the control unit. When rotating, it drives the electrode it abuts to rotate. When the rotating component clamps the electrode, the sidewalls of the two vertical abutment posts 340 directly contact the sidewalls of the electrode.

[0029] The insertion limiting component is used to insert the combined functional tube in a timely manner to limit the rotation of the hoisting parts and thus assist the hoisting parts in being removed from the electrode; The insertion limiting assembly includes a base frame 410, a vertical telescopic rod 420, a floating column 430, a guide tube 440, a horizontal insertion rod 450, and a lateral movement drive assembly 470. The base frame 410 is a rigid support and is fixed to the top surface of the support platform 100; The vertical telescopic rod 420 is a vertical electric telescopic rod or hydraulic rod, fixed to the top of the base frame 410, and its extension and retraction are controlled. like Figure 6 As shown, the floating column 430 is a vertical telescopic rod with a built-in tension spring. Under the restriction of the built-in tension spring, it is in a retracted state in normal condition, and when it is stretched, it overcomes the elastic force of the tension spring. The bottom of the floating column 430 is fixed to the top of the vertical telescopic rod 420; The guide tube 440 is a horizontally placed rigid square tube, which serves to guide the movement direction of the horizontally placed insertion rod 450 and is fixed to the top of the floating column 430. The horizontal insertion rod 450 is a horizontal rigid square rod that passes through the guide tube 440 and is slidably positioned on the guide tube 440. Under the drive of the horizontal movement drive assembly 470, it slides along the axial direction of the guide tube 440. The horizontal insertion rod 450 passes through the channel groove 212, and the difference between its width and the width of the channel groove 212 is less than 4 mm; the length of the channel groove 212 is more than 3 times the height of the horizontal insertion rod 450. The transverse drive assembly 470 is preferably a combination of a gear positioned on the guide tube 440 and a rack disposed on the top of the transverse insertion rod 450; the gear rotates under the drive of the motor, thereby driving the transverse insertion rod 450 to slide. When it is necessary to remove the hoisting accessories fixed on the old electrode 001, control the horizontal insertion rod 450 to slide so that the rotation of the hanging rod 005 can be restricted by the horizontal insertion rod 450.

[0030] The limiting and fixing component includes a support ring 500; The support ring 500 is a rigid ring with a rectangular or trapezoidal longitudinal section. Three fixed top rods 510 are fixed on its inner ring. The fixed top rods 510 are equally spaced and are horizontally set rigid telescopic rods that can be controlled to extend and retract in a timely manner to fix the support ring 500 on the electrode. The outer ring of the support ring 500 is provided with three embedded rods 520; the embedded rods 520 are horizontally placed round rods with equal spacing between them, and their diameter is less than 0.9 times the width of the positioning notch 203; under normal conditions, the support ring 500 is placed on the combined functional tube and the three embedded rods 520 are placed in the three positioning notches 203; the sliding plate 220 has one positioning notch 203, and the axial direction of the embedded rod 520 placed in the positioning notch 203 is the same as the moving direction of the sliding plate 220; the support ring 500 is also provided with a quick connector 540; the quick connector 540 is a circuit quick connector or an oil circuit quick connector, which is connected to the power component (oil pump or power supply), and can disconnect the connection with the power component as needed after being unplugged.

[0031] At least two top horizontal plates 550 are fixed to the top of the support ring 500. The top horizontal plate 550 is a rigid plate arranged horizontally and fixed to the top surface of the support ring 500. Its length direction is the same as the radial direction of the support ring 500. It is used to cooperate with the support rod 560 to lift the support ring 500 in a timely manner. The support rod 560 is a vertical rigid telescopic rod that corresponds one-to-one with the top horizontal plate 550. It is located directly below the top horizontal plate 550 and close to the combined functional tube. It is controlled to extend and retract to lift the support ring 500 as needed for the assembly of new and old electrodes.

[0032] The power unit is used to provide power for the operation of each component of the electric furnace electrode extension device of this application, and the control unit plays the role of controlling the coordinated operation of each component of the electric furnace electrode extension device. Both are existing technologies and will not be described in detail here.

[0033] The horizontal telescopic body 232, telescopic support rod 320, and fixed top rod 510 are all composed of automatic telescopic rods (electric telescopic rods or hydraulic cylinders) and manual telescopic rods.

[0034] The manual telescopic rod is preferably a rotary lock telescopic rod, with one end rotatably connected to the automatic telescopic rod around its own axis.

[0035] When the electric furnace electrode extension device of this application embodiment is used: In the initial state, the fixed upright plate 210 and the sliding upright plate 220 are separated, with a gap of at least 10 centimeters between them; During use, the old electrode 001, with the lifting accessories mounted on its top, is first hoisted to the top of the support platform 100 and inserted into the insertion hole 110 using hoisting equipment. The old electrode 001 is then lowered so that its top is close to the center of the channel groove 212. The clamping rotation assembly is controlled to clamp and fix the old electrode 001 (the extension of the telescopic rod 320 of the clamping rotation assembly during clamping needs to be pre-set so that the old electrode 001 is coaxial with the combined functional tube formed by the fixed vertical plate 210 and the sliding vertical plate 220 after clamping). The vertical contact post 340 of the clamping rotation assembly is controlled to rotate, causing the old electrode 001 to rotate. Simultaneously, the insertion limiting assembly is controlled to move the horizontal insertion rod 450 laterally, limiting the rotation of the lifting accessories. Afterward, the clamping rotation assembly is controlled to continue rotating the old electrode 001 while the hook 006 is gradually moved upward, working with the insertion limiting assembly to remove the lifting accessories from the old electrode 001. The lifting accessories are then transported away using hoisting equipment. The insertion limiting assembly is then reset. Fix the combination connector 003 and lifting accessories to the new electrode 002. Use lifting equipment to lift the new electrode 002 directly above the old electrode 001. Control the new electrode 002 to gradually move downwards, passing through the limiting and fixing components and gradually inserting into the combined functional tube. Place the combination of the new electrode 002 and the combination connector 003 on top of the old electrode 001, and keep the lifting rope of the new electrode 002 slack. Control the sliding plate 220 to slide and clamp and fix the new electrode 002, and make the new electrode 002 and the old electrode 001 coaxial. Control the support rod 560 to extend and lift the support ring 500 (the actual lifting amount is determined according to the electrode specifications, at least ensuring that the positioning notch 203 will not restrict the downward movement of the new electrode 002 during the tightening process). (Function) Ensure that the embedded rod 520 does not disengage from the positioning notch 203; control the extension of the fixed top rod 510 to fix the support ring 500 onto the new electrode 002; control the shortening and resetting of the support rod 560; then control the sliding plate 220 to move laterally by 0.5 to 1 cm, so that the combined functional tube does not restrict the rotation of the old electrode 001 and the vertical movement of the new electrode 002, but can still guide the vertical movement of the new electrode 002; control the operation of the hoisting equipment to restore the tautness of its hoisting rope; then control the clamping rotation assembly to drive the old electrode 001 to rotate around its own axis, while controlling the new electrode 002 to gradually move down, tightening and fixing the old and new electrodes together; finally, control the clamping rotation assembly and the limiting fixing assembly to work together to loosen the clamping of the electrode, such as Figure 7 As shown, the assembled electrodes are transported directly using hoisting equipment.

[0036] If the electric furnace electrode extension device malfunctions when the new electrode 002 has been transported to the top of the old electrode 001 and the limiting and fixing components have been fixed to the new electrode 002, the fixing rod 510 can be manually shortened by using tools such as wrenches (if necessary, the horizontal telescopic body 232 can also be manually shortened), and then the new electrode 002 can be transported away; after that, after fixing the hoisting accessories to the top of the old electrode 001, the telescopic carrier rod 320 can be manually shortened while the hoisting equipment is suspending the old electrode 001, and then the old electrode 001 can be hoisted away.

[0037] If the old electrode 001 and the new electrode 002 have been assembled and tightened, the assembly of the old and new electrodes can be lifted away by manually retracting the fixed top rod 510, the horizontal telescopic body 232 and the telescopic carrier rod 320 while the hoisting equipment is holding the assembly of the old and new electrodes.

[0038] If the old electrode 001 and the new electrode 002 have been assembled but not tightened, disconnect the limiting and fixing assembly from the power assembly by unplugging the quick-connect connector 540; raise the support ring 500 to disengage it from the positioning notch 203, and fix the support ring 500 to the side wall of the new electrode 002 by manually controlling the extension of the fixing rod 510; Figure 8 As shown, the extension rod 530 is fixed to one of the embedded rods 520 so that the old electrode 001 can be rotated manually with less effort; then, the new electrode 002 is tightened or loosened by manual labor in conjunction with hoisting equipment; the extension rod 530 is a horizontal rigid long rod that can be detachably fixed to one of the embedded rods 520.

[0039] Preferably, the fixed top rod 510, the horizontal telescopic body 232 and the telescopic carrier rod 320 are all equipped with pressure sensors that are connected to the control unit, which can monitor the extrusion pressure on the electrode in a timely manner.

[0040] Preferably, a tension spring is provided at the connection between the hoisting rope and the hook 006 of the hoisting equipment, and the tension spring plays a buffering role.

[0041] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages: This invention solves the technical problems of low efficiency, easy misalignment and damage to electrode threads when tightening graphite electrodes in existing technology, and serious obstacles to operation if the tightening equipment fails. It achieves the technical effect of enabling the electric furnace electrode extension device to assist in the efficient fixing and alignment of new and old electrodes, preventing electrode misalignment during extension, and allowing the electrode to be easily moved away or manually extended even in case of failure.

[0042] Example 2

[0043] Considering that during use, a small amount of slag from the electric furnace may adhere to the sidewalls and top of the old electrode 001, becoming debris at the electrode connection point and affecting the reliability of the connection between the old and new electrodes and the stability of the combination of the old and new electrodes, this application optimizes and improves the structure of the insertion limiting component based on the above embodiments. This not only assists in the hoisting and disassembly of accessories but also enables automatic cleaning of the top surface of the old electrode 001. Specifically: like Figure 2 As shown, the horizontal insertion rod 450 is larger at the top and smaller at the bottom, and can be used as a scraper; The horizontal insertion rod 450 is hollow inside, and a ventilation groove 451 is provided on one side near the bottom. The ventilation groove 451 is a straight groove that communicates with the internal space of the horizontal insertion rod 450. A filter screen for filtering out impurities is positioned at the communication position. The internal space of the horizontal insertion rod 450 is connected to the air pump assembly 460. The main body of the air pump assembly 460 is an air pump, which operates under control and is existing technology.

[0044] Using hoisting equipment, the old electrode 001, with hoisting accessories mounted on its top, is hoisted to directly above the support platform 100 and inserted into the insertion hole 110. The old electrode 001 is then lowered, and the horizontal insertion rod 450 is controlled to move laterally, so that its end moves directly above the hoisting connector 004 without contacting the hanging rod 005 when the old electrode 001 rotates. The old electrode 001 is then hoisted upwards, causing the horizontal insertion rod 450 to contact the top surface of the old electrode 001 and causing the floating column 430 to... The tension spring is in a stretched state; the clamping rotation assembly is controlled to clamp and fix the old electrode 001; the vertical contact post 340 of the clamping rotation assembly is controlled to rotate, causing the old electrode 001 to rotate, scraping and cleaning the top surface of the old electrode 001 and sucking the scraped debris into the ventilation groove 451; then the hoisting accessories on the old electrode 001 are removed; when the horizontal insertion rod 450 is reset, the air pump assembly 460 is controlled to blow out the debris accumulated in the ventilation groove 451.

[0045] Preferred, such as Figure 9 and Figure 10 As shown, the electric furnace electrode extension device of this application also includes a vertical scraper assembly for cleaning debris from the side wall of the old electrode 001; the vertical scraper assembly is positioned on one side of the combined functional tube, and the main body is a vertical scraper that can move laterally. When in use, it is inserted into the gap between the fixed vertical plate 210 and the sliding vertical plate 220 and abuts against the side wall of the old electrode 001 to clean it. Furthermore, the vertical scraper assembly includes a vertical scraper 610, a fixing frame 620, a telescopic positioning rod 630, and a floating telescopic rod 640; the vertical scraper 610 is a vertically arranged rigid plate; the fixing frame 620 is a rigid bracket fixed to the top of the support platform 100, serving a load-bearing and supporting function; the telescopic positioning rod 630 is a horizontally placed rigid telescopic rod that is controlled to extend and retract, with one end fixed to the fixing frame 620; the floating telescopic rod 640 is horizontally placed and has a built-in compression spring. The rigid telescopic rod accumulates elastic potential energy when compressed. It is coaxial with the telescopic positioning rod 630 and fixed at the other end of the telescopic positioning rod 630, playing a buffering role. The vertical scraper 610 is fixed at the end of the floating telescopic rod 640 away from the fixed frame 620. When cleaning the top surface of the old electrode 001, the vertical scraper 610 is controlled to insert into the gap between the fixed plate 210 and the sliding plate 220 under the drive of the telescopic positioning rod 630 and abut against the side wall of the old electrode 001 to clean it.

[0046] Preferably, a jet plate 650 is provided on one side of the vertical scraper 610; the jet plate 650 is a vertical rigid plate with jet holes or jet grooves on the side wall near the vertical scraper 610, and is hollow inside and connected to the air pump assembly 460. When the vertical scraper 610 is scraping and cleaning, air is blown onto the cleaning position to remove the debris accumulated on the vertical scraper 610.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric furnace electrode extension device, comprising a support platform (100) having an insertion hole (110); characterized in that: It also includes a clamping guide assembly, a clamping rotation assembly, an insertion limit assembly, and a limit fixing assembly; The clamping guide assembly is used to guide the movement of the electrode and clamp and fix the electrode in a timely manner. It is positioned on the top of the support platform (100) and includes a combined functional tube composed of two upright rigid plates spliced ​​together, as well as a sliding drive body for driving one of the upright rigid plates to move laterally. The combined functional tube is a vertical rigid tube with a through groove (211) on the side wall for the clamping rotating component to pass through. The top of the through groove (211) is provided with a channel groove (212) for the insertion limiting component to pass through. The top of the combined functional tube is provided with three positioning notches (203) that are straight grooves. The main body of the clamping and rotating assembly is a horizontal telescopic rod with a cylindrical wheel at the end, which is used to clamp and drive the electrode inserted into the combined functional tube to rotate in a timely manner. There are two clamping and rotating assemblies, which are symmetrically arranged and work together. The insertion limiting component is used to limit the rotation of the hoisting parts and thus assist the hoisting parts in being removed from the electrode. The main body is a horizontally placed and controlled laterally moving rigid rod. The main body of the limiting and fixing component is a rigid circular ring, which is embedded in the positioning notch (203). The inner ring is provided with multiple telescopic rods, which are controlled and fixed on the side wall of the electrode in a timely manner. The telescopic rod used to clamp and fix the electrode consists of an automatic telescopic rod and a manual telescopic rod.

2. The electric furnace electrode extension device as described in claim 1, characterized in that: The combined functional tube includes a fixed vertical plate (210) and a sliding vertical plate (220); the inner contour of the combined functional tube is adapted to the outer wall of the electrode; The fixed plate (210) is a vertically placed rigid arc-shaped plate, fixed to the top of the support platform (100) near the insertion hole (110); The channel groove (212) is a vertically arranged elongated channel. The sliding plate (220) is a vertical rigid arc-shaped plate that slides and is positioned on the support platform (100) in the horizontal direction. Under the drive of the sliding drive body, it moves closer to or away from the fixed plate (210). When the sliding plate (220) moves closer to the fixed plate (210), it together with the fixed plate (210) forms a vertical tube.

3. The electric furnace electrode extension device as described in claim 2, characterized in that: The combined functional tube includes a flared tube section (201) and a straight tube section (202); the flared tube section (201) is a flared tube body that is larger at the top and smaller at the bottom; the straight tube section (202) is a vertically placed round tube; The electrode inserted into the combined functional tube is guided into the straight tube section (202) through the horn tube section (201); the positioning notch (203) is a vertically set straight groove with a length greater than 30 cm, used to support the limiting and fixing component and restrict the rotation of the limiting and fixing component.

4. The electric furnace electrode extension device as described in claim 1, characterized in that: The clamping and rotating assembly is positioned on the top surface of the support platform (100) and includes a support frame (310), a telescopic support rod (320), an abutment column frame (330), and a vertical abutment column (340). The support frame (310) is fixed to the ground; The telescopic support rod (320) is a horizontal telescopic rod that is controlled to extend and retract. One end is fixed on the support frame (310). When it extends and retracts, it drives the vertical contact column (340) to move closer to or away from the electrode. The abutment column support (330) is a rigid support, fixed to the other end of the telescopic support rod (320), and is used to support the vertical abutment column (340); The vertical contact post (340) is a vertical rigid column, and there are two of them. They are rotatably connected to the vertical contact post (340) around their own axis. At least one of them is controlled to rotate, and when it rotates, it drives the electrode it is contacting to rotate.

5. The electric furnace electrode extension device as described in claim 4, characterized in that: The insertion limiting assembly includes a base frame (410), a vertical telescopic rod (420), a floating column (430), a guide tube (440), a horizontal insertion rod (450), and a transverse drive assembly (470); The base frame (410) is fixed to the top surface of the support platform (100); The vertical telescopic rod (420) is fixed to the top of the base frame (410) and is controlled to extend and retract; The floating column (430) is a vertical telescopic rod with a built-in tension spring. Under the restriction of the built-in tension spring, it is normally in a retracted state. The bottom of the floating column (430) is fixed to the top of the vertical telescopic rod (420); The guide tube (440) is a horizontally placed rigid square tube, fixed to the top of the floating column (430); The horizontal insertion rod (450) is a horizontal rigid square rod that passes through the guide tube (440) and is slidably positioned on the guide tube (440). Under the drive of the horizontal movement drive assembly (470), it slides along the axial direction of the guide tube (440). The horizontal insertion rod (450) passes through the channel groove (212), and the difference between its width and the width of the channel groove (212) is less than 4 mm; the length of the channel groove (212) is more than 3 times the height of the horizontal insertion rod (450).

6. The electric furnace electrode extension device as described in claim 1, characterized in that: The limiting and fixing assembly includes a support ring (500); The supporting ring (500) is a rigid ring body, and three fixed top rods (510) are fixed on its inner ring; the fixed top rods (510) are equally spaced and are horizontally set rigid telescopic rods; The outer ring of the support ring (500) is provided with three embedded rods (520); The embedded rod (520) is a horizontally placed round rod; At least two top horizontal plates (550) are fixed to the top of the support ring (500); the top horizontal plate (550) is a rigid plate arranged horizontally and fixed to the top surface of the support ring (500). Its length direction is the same as the radial direction of the support ring (500), and it is used to cooperate with the support rod (560) to lift the support ring (500) in a timely manner. The support rod (560) is a vertical rigid telescopic rod that corresponds one-to-one with the top horizontal plate (550). It is located directly below the top horizontal plate (550) and close to the combined functional tube. It is controlled to extend and retract to lift the support ring (500) as needed.

7. The electric furnace electrode extension device as described in any one of claims 4 to 6, characterized in that: The horizontal telescopic body (232), telescopic support rod (320), and fixed top rod (510) are all composed of automatic telescopic rods and manual telescopic rods.

8. The electric furnace electrode extension device as described in claim 7, characterized in that: The fixed top rod (510), the horizontal telescopic body (232) and the telescopic carrier rod (320) are all equipped with pressure sensors that are connected to the control unit signal, which can monitor the extrusion pressure on the electrode in a timely manner.

9. The electric furnace electrode extension device as described in claim 5, characterized in that: The horizontal insertion rod (450) is larger at the top and smaller at the bottom, and is used as a scraper. The horizontal insertion rod (450) is hollow inside, and a ventilation groove (451) is provided on one side near the bottom; The ventilation groove (451) is a straight groove that communicates with the internal space of the horizontal insertion rod (450), and a filter screen for filtering out impurities is positioned at the communication position; the internal space of the horizontal insertion rod (450) is communicated with the air pump assembly (460).

10. The electric furnace electrode extension device as described in claim 9, characterized in that: It also includes a vertical scraper assembly for cleaning debris from the sidewall of the old electrode (001); the vertical scraper assembly is positioned on one side of the combined functional tube, and the main body is a vertical scraper that can move laterally. When in use, it is inserted into the gap between the fixed vertical plate (210) and the sliding vertical plate (220) and abuts against the sidewall of the old electrode (001) to clean it.

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