An electrode lengthening device for an electric furnace

Abstract

The utility model belongs to electric furnace equipment technical field especially relates to a kind of electric furnace electrode lengthening device, including support guide beam, horizontal transfer trolley, rotating mechanism, lifting mechanism, clamping mechanism, manipulator;Support guide beam is welded on the operation platform of workshop, horizontal transfer trolley is set on support guide beam, and can move on support guide beam;Rotating mechanism is connected with horizontal transfer trolley;Lifting mechanism is arranged in support guide beam, clamping mechanism is connected with lifting mechanism, lifting mechanism can drive clamping mechanism to lift, clamping mechanism is symmetrically arranged in support guide beam, manipulator is connected with operation platform.Advantage is: can complete electrode lifting ring's disassembly work, need not manual operation, reduce manpower input.Horizontal transfer trolley can be accurately moved on track, accurately horizontally moves to lengthening work station hole with electrode new product, ensure the centring accuracy of electrode screw hole and electrode stud, avoid the damage of thread due to inaccurate centring.

Description

Technical Field

[0001] This utility model belongs to the field of electric furnace equipment technology, and in particular relates to an electric furnace electrode extension device. Background Technology

[0002] Electric furnaces (including electric arc furnaces, LF furnaces, etc.) require electrodes to provide heat for the smelting process. The electrodes consist of multiple sections of "electrode components" connected by lifting rings. The upper end of the electrode component has an electrode screw hole, and the lower end has an electrode stud that engages with the screw hole. The upper end of the lifting ring has a lifting hole and a suspension hole, and the lower end has a stud that engages with the electrode screw hole. See [link to relevant documentation]. Figure 17 The new electrodes are fastened together through electrode screw holes and electrode studs. The lifting eye is fastened to the electrode screw hole of the uppermost new electrode, and the length of the connected electrodes meets the requirements of the smelting process.

[0003] During operation, the electrodes will gradually melt and shorten. Once the bottom section of the "new electrode" is burned off, the electrode needs to be removed from the wire and a new "new electrode" needs to be connected before it can be used again. Typically, 2 to 3 electrodes are used, and 1 to 2 electrodes need to be removed and extended.

[0004] Currently, electrode extension is achieved either manually or using an electric device. When extending electrodes manually, 3-4 workers are needed, with the assistance of a crane, to tighten the connecting threads of the new electrode and complete the extension. Existing technologies, patent publication number CN108617045A discloses an automatic electrode extension device; patent publication number CN208460863U discloses an electrode extension apparatus. Both methods involve electric electrode extension, requiring a crane and a geared motor to automatically tighten the connecting threads of the new electrode, thus completing the extension. The existing electrode extension methods and devices have the following technical shortcomings: 1) The disassembly of the electrode lifting ring still needs to be done manually; 2) A crane is required for the operation, which has problems with low thread alignment accuracy and mismatch between the crane descent speed and the thread connection speed, which can easily cause damage to the threads; 3) The tightening torque needs to overcome the spring compression force, which increases power consumption; 4) Because a crane is required, the electrode extension operation can only be completed one by one, which reduces the production rate of the electric furnace. Summary of the Invention

[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an electric furnace electrode extension device that can realize the disassembly of electrode lifting rings and multi-station extension operations, improve thread alignment accuracy, tightening power, and work efficiency, reduce crane operation rate, and improve electric furnace production rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electric furnace electrode extension device includes a support guide beam, a transverse trolley, a rotating mechanism, a lifting mechanism, a clamping mechanism, and a robot arm. The support guide beam is welded to the work platform in the workshop. The transverse trolley is mounted on the support guide beam and can move on it. The rotating mechanism is connected to the transverse trolley. The lifting mechanism is located inside the support guide beam. The clamping mechanism is connected to the lifting mechanism, and the lifting mechanism can drive the clamping mechanism to rise and fall. The clamping mechanisms are symmetrically arranged inside the support guide beam. The robot arm is connected to the work platform.

[0008] The supporting guide beam includes a structural beam, a track, guide columns, and slide rails. The supporting guide beam is a welded component. The structural beam and guide columns are fixedly connected to the workshop work platform. The track is fixed on the upper part of the structural beam. The guide columns are fixedly connected perpendicularly to the structural beam. Slide rails are provided on the inner side of the guide columns. There are 4 guide columns.

[0009] The traverse trolley includes a traverse frame, a concave spherical seat, a drive shaft assembly, a driven shaft assembly, a reducer base, and a U-shaped seat. The traverse frame has several workstation holes, the arrangement of which is consistent with the traveling direction of the traverse frame. The concave spherical seat has an integrally formed concave spherical structure and is welded to the workstation holes. The reducer base is welded to the traverse frame, and the number of reducer bases is twice the number of workstation holes. The top of the U-shaped seat has a groove, and the U-shaped seat is welded to the traverse frame. The number of U-shaped seats is twice the number of workstation holes. The drive shaft assembly and the driven shaft assembly are respectively connected to both ends of the traverse frame.

[0010] The number of workstation holes is 1 to 7, and the number of concave spherical seats is the same as the number of workstation holes.

[0011] The drive shaft assembly includes a drive shaft, a first geared motor, wheels, and bearing housings. The first geared motor is connected to the drive shaft, the wheels are connected to the drive shaft, the bearing housings are fixedly connected to one end of the transverse frame, both ends of the drive shaft are connected to the bearing housings, and the wheels mesh with the track of the support guide beam.

[0012] The driven shaft assembly includes a driven shaft, a wheel, and a bearing housing. The bearing housing is bolted to the other end of the transverse frame. The wheel is connected to the driven shaft. Both ends of the driven shaft are connected to the bearing housing. The wheel engages with the track of the support guide beam.

[0013] The traverse trolley also includes a positioning block, which is located below the concave spherical seat and is fixedly connected to the traverse trolley frame. The positioning block has an arc surface.

[0014] The rotating mechanism includes a convex spherical seat, a large pulley, a shift fork, a round steel bar, a transmission belt, a small pulley, and a second geared motor. The convex spherical seat sits on a concave spherical seat of the transverse trolley. The large pulley is connected to the convex spherical seat through a thrust bearing. The shift fork is symmetrically welded to the upper surface of the large pulley. The round steel bar is placed inside the shift fork. The second geared motor is connected to the small pulley. The small pulley is connected to the large pulley through a transmission belt. The second geared motor is fixedly connected to the transverse trolley.

[0015] The lifting mechanism includes a lifting beam, a lifting cylinder, and guide wheels. The lifting beam is a welded component. The piston rod of the lifting cylinder is hinged to the lifting beam, and the tailstock of the lifting cylinder is hinged to the supporting guide beam. The guide wheels are connected to both sides of the lifting beam, and the guide wheels are clearance-fitted with the slide rails of the supporting guide beam.

[0016] The clamping mechanism includes a pull rod, a pull rod shaft, a hydraulic cylinder, and a clamping block. The pull rod has a U-shaped frame structure. One end of the pull rod opening is hinged to the clamping block through the pull rod shaft, and the other end is connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder is located inside the pull rod and is fixedly connected to the lifting mechanism, which drives the lifting. One side of the clamping block is an arc surface, and the other side is provided with a through hole for connecting to the pull rod shaft. Several grooves are provided on the arc surface.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. An electric furnace electrode extension device that can complete the disassembly of electrode lifting rings without manual operation, reducing labor input. The transverse trolley can move precisely on the track, accurately moving the new electrode to the extension station hole, ensuring the alignment accuracy of the electrode screw hole and electrode stud, and avoiding thread damage caused by inaccurate alignment.

[0019] 2. The lifting mechanism of this utility model can lift and lower stably. The guide wheel of the lifting mechanism and the slide of the supporting guide beam are fitted with a clearance, which can stably drive the clamping mechanism to lift and lower, thereby stably driving the electrode to rise or fall, further improving the accuracy of thread alignment.

[0020] 3. This utility model enables multi-station operation and multi-electrode splicing, greatly improving work efficiency and reducing the time required for electrode splicing. During the electrode splicing process, the crane is only used to lift the electrode to the splicing station hole and to the storage position; it is not needed at other times, thus maximizing the crane's workload.

[0021] 4. The use of this utility model can reduce the impact of electrode extension on production. The high-efficiency electrode extension operation reduces the interruption time of electric furnace production during the electrode extension process, thereby improving the overall production rate of the electric furnace. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the supporting guide beam structure.

[0024] Figure 3 yes Figure 2 A sectional view along line AA.

[0025] Figure 4 This is a structural schematic diagram of the transverse trolley.

[0026] Figure 5 This is a structural schematic diagram of the transverse frame.

[0027] Figure 6 This is the main sectional view of the concave spherical seat.

[0028] Figure 7 This is a structural schematic diagram of the drive shaft assembly.

[0029] Figure 8 This is a structural schematic diagram of the driven shaft assembly.

[0030] Figure 9 This is a structural diagram of the positioning block.

[0031] Figure 10 This is a schematic diagram of the rotating mechanism.

[0032] Figure 11 This is a structural diagram of the lifting mechanism.

[0033] Figure 12 This is a schematic diagram of the clamping mechanism.

[0034] Figure 13 This is a structural diagram of the tie rod.

[0035] Figure 14 This is a schematic diagram of the clamping block.

[0036] Figure 15 yes Figure 14 Sectional view along line BB.

[0037] Figure 16 This is a schematic diagram showing the state of the electrode suspended inside the workstation hole.

[0038] Figure 17 This is a schematic diagram of the electrode structure.

[0039] In the diagram: 1. Lifting ring; 2. New electrode; 10. Supporting guide beam; 20. Transverse trolley; 30. Rotation mechanism; 40. Lifting mechanism; 50. Clamping mechanism; 60. Robotic arm; 70. Electrode; 80. Working platform; 11. Structural beam; 12. Track; 13. Guide column; 13-1. Slide rail; 21. Transverse frame; 22. Concave spherical seat; 23. Drive shaft assembly; 24. Driven shaft assembly; 25. Reducer base; 26. Positioning block; 27. U-shaped seat; 21-1. Workstation hole; 22-1. Concave spherical surface; 23-1. Drive shaft ; 23-2, Gear motor one; 23-3, Wheel; 23-4, Bearing seat; 24-1, Driven shaft; 26-1, Arc surface; 26-2, Mounting hole; 31, Convex spherical seat; 32, Large pulley; 33, Shift fork; 34, Round steel; 35, Transmission belt; 36, Gearbox base plate; 37, Small pulley; 38, Gear motor two; 41, Lifting beam; 42, Lifting cylinder; 43, Guide wheel; 51, Tie rod; 52, Tie rod shaft; 53, Hydraulic cylinder; 54, Clamping block; I, Through hole one; II, Through hole two; III, Through hole three; IV, Arc surface. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0041] See Figures 1-15 An electric furnace electrode extension device includes a support guide beam 10, a transverse trolley 20, a rotating mechanism 30, a lifting mechanism 40, a clamping mechanism 50, and a robotic arm 60. The support guide beam 10 is welded to a work platform 80 in the workshop. The transverse trolley 20 is mounted on a track 12 of the support guide beam 10 and can reciprocate along the track 12. The rotating mechanism 30 is connected to the transverse trolley 20 and can drive the lifting ring of the electrode 70 to rotate. The support guide beam 10 has a T-shaped welded frame structure. The lifting mechanism 40 is located within the vertical structure of the support guide beam 10. The clamping mechanism 50 is connected to the lifting mechanism 40 and can drive the clamping mechanism 50 to rise and fall. The clamping mechanisms 50 are symmetrically arranged within the support guide beam 10 and are used to clamp the electrode 70. The robotic arm 60 is connected to the work platform 80 and is used to grip and move round steel bars 34.

[0042] See Figure 2 , Figure 3The supporting guide beam 10 includes a structural beam 11, a track 12, guide columns 13, and a slide rail 13-1. The supporting guide beam 10 is a welded component. The structural beam 11 is welded and fixed to the workshop work platform 80, and the track 12 is fixed to the top of the structural beam 11. The guide columns 13 are fixedly connected to the workshop work platform 80, welded to the structural beam 11, and perpendicular to the structural beam 11. There are four guide columns 13 arranged in a rectangle, and a slide rail 13-1 is provided on the inner side of each guide column 13. The spacing between the guide columns 13 is greater than the diameter of the workstation hole 21-1, so that it will not interfere with the electrode 70 when the transverse platform moves.

[0043] See Figures 4-6 The transverse trolley 20 includes a transverse frame 21, concave spherical seats 22, a drive shaft assembly 23, a driven shaft assembly 24, a reducer base 25, and a U-shaped seat 27. The transverse frame 21 has 2 to 7 workstation holes 21-1, and the arrangement direction of the workstation holes 21-1 is consistent with the traveling direction of the transverse frame 21. The number of concave spherical seats 22 is the same as the number of workstation holes 21-1. The concave spherical structure 22-1 is integrally formed on the concave spherical seat 22, and the concave spherical seat 22 is welded and fixed to the workstation holes 21-1. The reducer base 25 has a U-shaped structure, which is used to support and fix the reducer and leave transmission space for the transmission belt 35. The reducer base 25 is welded and fixed to the transverse frame 21, and the number of reducer bases 25 is twice the number of workstation holes 21-1. The top of the U-shaped seat 27 has a groove. The U-shaped seat 27 is welded and fixed to the transverse frame 21. The number of U-shaped seats 27 is at least twice the number of workstation holes 21-1. Round steel 34 is placed on them. The drive shaft assembly 23 and the driven shaft assembly 24 are respectively connected to both ends of the transverse frame 21.

[0044] See Figure 7 The drive shaft assembly 23 includes a drive shaft 23-1, a geared motor 23-2, a wheel 23-3, and a bearing housing 23-4. The geared motor 23-2 is connected to the drive shaft 23-1, and the wheel 23-3 is also connected to the drive shaft 23-1. The bearing housing 23-4 is fixedly connected to one end of the transverse frame 21. Both ends of the drive shaft 23-1 are connected to the bearing housing 23-4. The wheel 23-3 engages with the track 12 of the support guide beam 10. The geared motor 23-2 provides driving power, causing the drive shaft 23-1 to rotate, allowing the wheel 23-3 to rotate on the track 12 of the support guide beam 10, thereby moving the transverse frame 21 on the track 12. See [link / description]. Figure 8 The driven shaft assembly 24 includes a driven shaft 24-1, a wheel 23-3, and a bearing seat 23-4. The bearing seat 23-4 is fixedly connected to the other end of the transverse frame 21 by bolts. The wheel 23-3 is connected to the driven shaft 24-1. Both ends of the driven shaft 24-1 are connected to the bearing seat 23-4. The wheel 23-3 meshes with the track 12 of the support guide beam 10, so that the transverse frame 21 moves smoothly on the track 12.

[0045] See Figure 4 , Figure 9 , Figure 16 The transverse trolley 20 also includes positioning blocks 26, which are located below the concave spherical seat 22. The side of the positioning block 26 has an arc surface 26-1, the curvature of which matches the electrode. The top has mounting holes 26-2, through which the positioning block 26 is fixedly connected to the transverse frame 21. The positioning blocks 26 are coaxially arranged with the station holes 21-1, and their number is the same as the number of station holes 21-1. The arrangement of the positioning blocks 26 ensures that the electrode axes of each station are parallel and have the same distance from the center.

[0046] See Figure 10 The rotating mechanism 30 includes a convex spherical seat 31, a large pulley 32, a shift fork 33, a round steel bar 34, a transmission belt 35, a small pulley 37, and a second geared motor 38. The convex spherical seat 31 cooperates with the concave spherical seat 22 of the transverse trolley 20, with the convex spherical seat 31 sitting on the concave spherical seat 22, and the convex spherical seat 31 and the concave spherical seat 22 are completely fitted together. The large pulley 32 is seated on the convex spherical seat 31, and a thrust bearing is installed inside the convex spherical seat 31. The pulley 32 is seated on the balls of the thrust bearing. The second geared motor 38 drives the large pulley 32 to rotate, while the transverse trolley 20 does not rotate accordingly. The shift fork 33 is symmetrically welded to the upper surface of the large pulley 32, and the top of the shift fork 33 has a concave structure, with the round steel bar 34 placed inside the shift fork 33. The second geared motor 38 is connected to the small pulley 37, which is connected to the large pulley 32 via a transmission belt 35. The second geared motor 38 is fixedly connected to the transverse trolley 20. The second geared motor 38 is fixedly connected to the reducer base plate 36, which is fixedly connected to the reducer base 25 via bolts. The small pulley 37 is located inside the reducer base 25 and is fixedly connected to the output shaft of the second geared motor 38. The number of rotating mechanisms 30 is the same as the number of workstation holes 21-1.

[0047] See Figure 1 , Figure 11 The lifting mechanism 40 includes a lifting beam 41, a lifting cylinder 42, and guide wheels 43. The lifting beam 41 is a welded component. The piston rod of the lifting cylinder 42 is hinged to the lifting beam 41, and the tailstock of the lifting cylinder 42 is hinged to the supporting guide beam 10. The guide wheels 43 are bolted to both sides of the lifting beam 41, and the guide wheels 43 are clearance-fitted with the slide rail 13-1 of the supporting guide beam 10 to prevent jamming during operation. The lifting cylinder 42 can be an electric cylinder or a hydraulic cylinder. The lifting mechanism 40 consists of two parts, with clamping mechanisms 50 symmetrically arranged on them, capable of clamping the electrode 70 in the middle position of the four guide columns 13.

[0048] See Figure 1 , Figures 12-15The clamping mechanism 50 includes a pull rod 51, a pull rod shaft 52, a hydraulic cylinder 53, and a clamping block 54. The pull rod 51 has a U-shaped frame structure. One open end of the pull rod 51 has a through hole II, through which the pull rod shaft 52 is hinged to the clamping block 54. The other end has a through hole I, through which the pull rod shaft 52 is connected to the piston rod of the hydraulic cylinder 53. The hydraulic cylinder 53 is located inside the pull rod 51 and is fixedly connected to the lifting mechanism 40. The lifting mechanism 40 drives the hydraulic cylinder 53 to rise and fall. One side of the clamping block 54 is an arc surface IV, and the other side has a through hole III for connecting with the pull rod shaft 52. The arc surface IV has several grooves to increase the friction with the electrode 70.

[0049] See Figures 1-15 The working process of the electric furnace electrode 70 extension device:

[0050] 1. Preparation stage: There are 5 workstation holes 21-1. The middle workstation hole 21-1 is used as the extension workstation hole 21-1 for electrode 70, and the new electrode 2 is not suspended. The other 4 workstation holes 21-1 are used as spare workstation holes 21-1, and the new electrode 2 needs to be suspended in advance.

[0051] Use a crane to insert the new electrode 2 into the spare parts station hole 21-1. Use a robot arm 60 to insert the round steel 34 in the U-shaped seat 27 into the lifting ring 1 and shift fork 33 of the new electrode 2 to suspend the new electrode 2. Then release the crane from the occupancy.

[0052] 2. Electrode 70 Extension Stage: A crane is used to lift the electrode 70 to be extended from the electric furnace working position to the extension station hole 21-1 and insert it into the extension station hole 21-1. After the lifting cylinder 42 of the lifting mechanism 40 drives the clamping mechanism 50 to rise to the upper limit position, the clamping mechanism 50 clamps the electrode 70 to be extended. The round steel 34 in the U-shaped seat 27 is inserted into the lifting ring 1 and the shift fork 33 of the electrode 70 to be extended by the robot arm 60, suspending the electrode 70.

[0053] 3. The rotating mechanism 30 rotates in the reverse direction to disassemble the lifting ring 1 of the electrode to be extended 70. The round steel 34 in the shift fork 33 is sent back to the U-shaped seat 27 by the robotic arm 60. The crane sends the lifting ring 1 of the electrode to be extended 70 to the storage position and releases the crane from its occupancy. The lifting mechanism 40 lowers the electrode to be extended 70 to the lower limit position. The transverse trolley 20 moves the new electrode 2 laterally to the extension station hole 21-1. The lifting mechanism 40 raises the electrode to be extended 70 so that the screw hole of the upper part of the electrode 70 is aligned with the stud at the lower end of the new electrode 2. The rotating mechanism 30 rotates in the forward direction to tighten the new electrode 2 onto the electrode to be extended 70, realizing the extension work of the electrode to be extended 70. The transverse trolley 20 returns to the initial position, laying the groundwork for the next extension work of the electrode 70.

[0054] This utility model can realize automatic disassembly of electrode 70 lifting ring 1 and multi-station extension operation. It has the characteristics of high thread alignment accuracy, low tightening power, small footprint, freeing up crane operation rate and improving electric furnace production operation rate.

Claims

1. An electric furnace electrode extension device, characterized in that, It includes a support guide beam, a transverse trolley, a rotating mechanism, a lifting mechanism, a clamping mechanism, and a robot arm. The support guide beam is welded to the workshop's work platform. The transverse trolley is mounted on the support guide beam and can move on it. The rotating mechanism is connected to the transverse trolley. The lifting mechanism is located inside the support guide beam. The clamping mechanism is connected to the lifting mechanism, and the lifting mechanism can drive the clamping mechanism to rise and fall. The clamping mechanisms are symmetrically arranged inside the support guide beam. The robot arm is connected to the work platform.

2. The electric furnace electrode extension device according to claim 1, characterized in that, The supporting guide beam includes a structural beam, a track, guide columns, and slide rails. The supporting guide beam is a welded component. The structural beam and guide columns are fixedly connected to the workshop work platform. The track is fixed on the upper part of the structural beam. The guide columns are fixedly connected perpendicularly to the structural beam. Slide rails are provided on the inner side of the guide columns. There are 4 guide columns.

3. The electric furnace electrode extension device according to claim 1, characterized in that, The traverse trolley includes a traverse frame, a concave spherical seat, a drive shaft assembly, a driven shaft assembly, a reducer base, and a U-shaped seat. The traverse frame has several workstation holes, the arrangement of which is consistent with the traveling direction of the traverse frame. The concave spherical seat has an integrally formed concave spherical structure and is welded to the workstation holes. The reducer base is welded to the traverse frame, and the number of reducer bases is twice the number of workstation holes. The top of the U-shaped seat has a groove, and the U-shaped seat is welded to the traverse frame. The number of U-shaped seats is twice the number of workstation holes. The drive shaft assembly and the driven shaft assembly are respectively connected to both ends of the traverse frame.

4. The electric furnace electrode extension device according to claim 3, characterized in that, The number of workstation holes is 1 to 7, and the number of concave spherical seats is the same as the number of workstation holes.

5. The electric furnace electrode extension device according to claim 3, characterized in that, The drive shaft assembly includes a drive shaft, a first geared motor, wheels, and bearing housings. The first geared motor is connected to the drive shaft, the wheels are connected to the drive shaft, the bearing housings are fixedly connected to one end of the transverse frame, both ends of the drive shaft are connected to the bearing housings, and the wheels mesh with the track of the support guide beam.

6. The electric furnace electrode extension device according to claim 3, characterized in that, The driven shaft assembly includes a driven shaft, a wheel, and a bearing housing. The bearing housing is bolted to the other end of the transverse frame. The wheel is connected to the driven shaft. Both ends of the driven shaft are connected to the bearing housing. The wheel engages with the track of the support guide beam.

7. The electric furnace electrode extension device according to claim 3, characterized in that, The traverse trolley also includes a positioning block, which is located below the concave spherical seat and is fixedly connected to the traverse trolley frame. The positioning block has an arc surface.

8. The electric furnace electrode extension device according to claim 1, characterized in that, The rotating mechanism includes a convex spherical seat, a large pulley, a shift fork, a round steel bar, a transmission belt, a small pulley, and a second geared motor. The convex spherical seat sits on a concave spherical seat of the transverse trolley. The large pulley is connected to the convex spherical seat through a thrust bearing. The shift fork is symmetrically welded to the upper surface of the large pulley. The round steel bar is placed inside the shift fork. The second geared motor is connected to the small pulley. The small pulley is connected to the large pulley through a transmission belt. The second geared motor is fixedly connected to the transverse trolley.

9. The electric furnace electrode extension device according to claim 1, characterized in that, The lifting mechanism includes a lifting beam, a lifting cylinder, and guide wheels. The lifting beam is a welded component. The piston rod of the lifting cylinder is hinged to the lifting beam, and the tailstock of the lifting cylinder is hinged to the supporting guide beam. The guide wheels are connected to both sides of the lifting beam, and the guide wheels are clearance-fitted with the slide rails of the supporting guide beam.

10. The electric furnace electrode extension device according to claim 1, characterized in that, The clamping mechanism includes a pull rod, a pull rod shaft, a hydraulic cylinder, and a clamping block. The pull rod has a U-shaped frame structure. One end of the pull rod opening is hinged to the clamping block through the pull rod shaft, and the other end is connected to the piston rod of the hydraulic cylinder. The hydraulic cylinder is installed inside the pull rod and is fixedly connected to the lifting mechanism, which drives the lifting. One side of the clamping block is an arc surface, and the other side is provided with a through hole for connecting to the pull rod shaft. Several grooves are provided on the arc surface.

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