Automatic electrode drop device
By designing an automatic lowering device and using a winch and speed reducer to control the electrode rolling speed, the problem of graphite electrode damage during the forming stage was solved, achieving safe and efficient automated operation and adapting to the needs of electrodes of different diameters.
Patent Information
- Application Number
- CN202310791005.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2043-06-30
AI Technical Summary
In the existing technology, graphite electrodes are easily damaged when they roll during the forming stage, especially when electrodes of different diameters roll, the high and low potential energies are too large, which leads to electrode deformation, and there are safety hazards due to manual intervention.
Design an automatic lowering device comprising a rolling plate, a lower support, a speed reducer, an upper support, and a winch. By controlling the lowering speed of the winch's traction rope and adjusting the spacing of the side bars, the device utilizes the rollers of the speed reducer to hold the electrode in place, preventing damage from excessive rolling and adapting to electrodes of different diameters. Combined with a PLC controller, the device achieves automated operation.
It effectively avoids damage to the electrodes during the rolling process, reduces manual intervention, improves safety, adapts to the use needs of electrodes of different diameters, and realizes automated operation.
Smart Images
Figure CN116812429B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of carbon, and more specifically to an automatic extrusion electrode lowering device. Background Technology
[0002] Graphite electrodes are also carbon materials, mainly made from petroleum coke and needle coke as raw materials, and coal tar pitch as binder. They are manufactured through calcination, batching, mixing, molding, roasting, graphitization, and machining. They are conductors that release electrical energy in the form of an electric arc in an electric arc furnace to heat and melt the furnace charge.
[0003] like Figure 1 As shown, during the forming stage, the electrode (graphite rod) is extruded into a rod shape and fed into the tray of the electrode receiving plate (receiving trolley). After reaching the required length, it is cut off, the tray is tilted, and the electrode rolls down the inclined plate into the cooling roller track, where it is cooled by water. Because the electrode has excessive potential energy when rolling on the inclined plate, especially when electrodes of different diameters are rolling, it is very easy to damage and deform the electrode. The existing solution is to manually use tools to hold it back and slow down the rolling of the electrode. However, this is labor-intensive. The larger electrodes roll down at high speed and with great force, which is difficult for personnel to hold back and may cause injury. Summary of the Invention
[0004] The purpose of this invention is to provide an automatic lowering device for extruded electrodes.
[0005] This invention is implemented by the following technical solution:
[0006] An automatic extrusion electrode lowering device includes a rolling plate, a lower support, a speed reducer, an upper support, and a winch. The rolling plate, the lower support, the speed reducer, and the upper support are arranged at an incline from bottom to top. The winch is fixed to the upper support. The traction rope of the winch passes over the upper support at its highest point and is fixed to the speed reducer. The speed reducer slides along the incline of the lower support and is slidably connected to a corresponding slide rail on the lower support. A roller rotates at the highest point of the speed reducer and is positioned above the rolling plate.
[0007] Preferably, it also includes two rows of column groups, each row of column groups consisting of three columns arranged diagonally from high to low, with the rolling plate, the lower support, the deceleration frame and the upper support placed between the two rows of column groups.
[0008] Preferably, the lower support includes two symmetrically arranged side rods, the outer side of each side rod being slidably connected to each of the columns in a row of columns; the inner side of each side rod is provided with a slide rail with a cross-section of U-shape.
[0009] Preferably, the column is provided with a long through groove, and the side rod is fixed with a bolt passing through the long through groove, and a nut is screwed onto the bolt passing through the long through groove; a lead screw is provided on the column in the middle of each row of column groups and on the column at the highest end.
[0010] Preferably, the lead screw includes a screw, a handwheel, and a support plate. The bottom end of the screw is rotatably connected to the side rod, the top end of the screw passes through the support plate and is screwed to the center of the handwheel, the support plate is fixed to the column, and the support plate is provided with a sliding groove through which the screw passes.
[0011] Preferably, the deceleration frame includes an H-shaped bracket, with the roller rotatably mounted at the high end of the H-shaped bracket. The H-shaped bracket is positioned between two side rods, and at least two sets of roller groups are provided on each side of the H-shaped bracket. Each set of roller groups includes two rollers with their axles perpendicular to each other. The rollers are rotatably connected to the side of the H-shaped bracket, with one roller rolling within the slide rail and the other roller rolling against the top surface of the slide rail.
[0012] Preferably, the upper support includes a rectangular frame, which is fixed to the column at the upper end of the column group and the middle column. The support of the winch is fixed in the middle of the rectangular frame. A guide wheel is rotatably mounted on the top of the upper support, and the traction rope of the winch passes around the guide wheel.
[0013] Preferably, it also includes a PLC controller and contact switches. A trigger rod is fixed on the reduction gear frame, and the contact switches are respectively provided at both ends of the side rod. The signal output terminal of the contact switch is connected to the signal receiving terminal of the PLC controller, and the PLC controller is electrically connected to the winch.
[0014] Advantages of this invention:
[0015] 1. By controlling the lowering speed of the winch's traction rope, the speed reducer is kept at a suitable speed as it rolls against the electrode, preventing damage to the electrode caused by excessively fast rolling on the rolling plate. This also replaces manual labor and avoids the health hazards caused by high temperatures and strong rolling forces.
[0016] 2. This device can also adjust the distance between the side rod and the rolling plate so that the distance from the higher end of the side rod to the rolling plate is less than the distance from the lower end of the side rod to the rolling plate, so that the electrode is rolled against the speed reducer and rolls down to the cooling track by itself. In addition, adjusting the distance between the side rod and the rolling plate can accommodate electrodes of different diameters.
[0017] 3. When the winch pulls the speed reducer to rise or fall to the high end or low end of the rolling plate, the trigger rod will touch the corresponding contact switch, and the PLC controller will control the winch to automatically stop when it reaches the 5th position. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the prior art in the background section;
[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention;
[0021] Figure 3 yes Figure 2 A magnified view of part A in the diagram;
[0022] Figure 4 yes Figure 2 A magnified view of part B in the diagram;
[0023] Figure 5 yes Figure 2 A schematic diagram of the rolling plate;
[0024] Figure 6 yes Figure 2 Schematic diagram of the middle and lower layer support structure;
[0025] Figure 7 yes Figure 2 Schematic diagram of the gearbox;
[0026] Figure 8 yes Figure 2 Schematic diagram of the upper and middle layer support structure.
[0027] In the diagram: 1. Rolling plate; 2. Lower support; 2. Side rod; 2.1. Reducer; 3. H-shaped support; 3.1. Roller assembly; 3.2. Roller; 3.2.1. Upper support; 4. Rectangular frame; 4.1. Support; 4.2. Winch; 5. Column assembly; 6. Column; 6.1. Slide rail; 7. Roller; 8. Long through groove; 9. Bolt; 10. Nut; 11. Lead screw; 12. Screw; 12.1. Handwheel; 12.2. Support plate; 12.3. Slide groove; 12.4. Guide wheel; 13. PLC controller; 14. Contact switch; 15. Trigger rod; 16. Detailed Implementation
[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] like Figures 2-8 As shown, an automatic extrusion electrode lowering device includes a rolling plate 1, a lower support 2, a reduction gear 3, an upper support 4, and a winch 5. The rolling plate 1, lower support 2, reduction gear 3, and upper support 4 are arranged at an incline from bottom to top. It also includes two rows of column groups 6, each row of column groups 6 consisting of three columns 6.1 arranged at an incline from high to low. The rolling plate 1, lower support 2, reduction gear 3, and upper support 4 are placed between the two rows of column groups 6.
[0030] The winch 5 is fixed to the upper support 4. The traction rope of the winch 5 passes around the high end of the upper support 4 and is fixed to the speed reducer 3. The speed reducer 3 slides along the inclined direction of the lower support 2 and is slidably connected to the corresponding slide rail 7 on the lower support 2. The high end of the speed reducer 3 has a rotating roller 8, which is placed above the rolling plate 1.
[0031] This device replaces the inclined plate between the electrode receiving plate and the cooling roller track. The electrode is tilted to the side by the tray and sent to the rolling plate 1. The roller 8 at the high end of the deceleration frame 3 holds the electrode. The winch 5 slowly releases the traction rope. The deceleration frame 3 moves obliquely to the lower end along the lower support 2 by its own weight, while rolling the electrode to the cooling roller track. The roller 8 rotates with the electrode to avoid electrode damage. The lowering speed of the traction rope of the winch 5 is controlled so that the electrode rolls at a suitable speed, avoiding damage caused by excessive speed during the rolling process. It also replaces manual labor and avoids the harm to human health caused by high temperature and strong rolling force.
[0032] The lower support 2 includes two symmetrically arranged side rods 2.1. The outer side of each side rod 2.1 is slidably connected vertically to each column 6.1 of a row of columns 6. The inner side of the side rod 2.1 is provided with a U-shaped slide rail 7. The higher end of the side rod 2.1 slides vertically along the corresponding column 6.1, which can adjust the height of the higher end of the side rod 2.1. The middle of the side rod 2.1 slides vertically along the corresponding column 6.1, which can adjust the height of the lower end of the side rod 2.1. The height of the side rod 2.1 can be adjusted until the higher end of the side rod 2.1 is aligned with the roller. The distance of the moving plate 1 is less than the distance from the lower end of the side rod 2.1 to the rolling plate 1. The purpose is that when the distance from the higher end of the side rod 2.1 to the rolling plate 1 is appropriate, the roller 8 of the deceleration frame 3 can abut against the electrode. When the distance from the lower end of the side rod 2.1 to the rolling plate 1 is increased, the deceleration frame 3 moves along the side rod 2.1 to the lower end of the side rod 2.1, and the roller 8 just leaves the electrode, so that the electrode can continue to roll downwards. The distance from the end of the side rod 2.1 to the rolling plate 1 is adjustable to accommodate electrodes of different diameters.
[0033] A long slot 9 is provided on the column 6.1. A bolt 10 passing through the long slot 9 is fixed on the side rod 2.1. A nut 11 is screwed onto the bolt 10 passing through the long slot 9. The width of the long slot 9 is greater than the outer diameter of the bolt 10. The side rod 2.1 slides up and down on the column 6.1 by moving up and down within the long slot 9 via the bolt 10. Tightening the nut 11 can secure the side rod 2.1 to the corresponding column 6.1. A lead screw 12 is provided on the middle column 6.1 and the column 6.1 at the highest end of each row of column groups 6. The lead screw 12 includes a screw rod 12.1, a handwheel 12.2, and a support plate 12.3. The bottom end of the screw rod 12.1 rotates with the side rod 2.1. The screw 12.1 is connected to the support plate 12.3 at its top end and is screwed to the center of the handwheel 12.2. The support plate 12.3 is fixed to the column 6.1. The support plate 12.3 is provided with a sliding groove 12.4 through which the screw 12.1 passes. The lead screw 12 can control the sliding distance of the side rod 2.1 on the corresponding column 6.1. Specifically, rotating the handwheel 12.2 causes the screw 12.1 to move up and down, driving the side rod 2.1 to rise and fall. Since the rise and fall of the side rod 2.1 is not a vertical straight line movement, but may be a curved movement, the bottom end of the screw 12.1 and the side rod 2.1 can rotate, and the screw 12.1 can move horizontally within the sliding groove 12.4, providing adjustment space.
[0034] The speed reducer 3 includes an H-shaped support 3.1, with a roller 8 rotatably mounted at the high end of the H-shaped support 3.1. The H-shaped support 3.1 is positioned between two side rods. At least two sets of roller groups 3.2 are provided on each side of the H-shaped support 3.1. Each set of roller groups 3.2 includes two rollers 3.2.1 with mutually perpendicular axles. The rollers 3.2.1 are rotatably connected to the side of the H-shaped support 3.1. One roller 3.2.1 rolls within the slide rail 7, while the other roller 3.2.1 rolls against the top surface of the slide rail 7. The speed reducer 3 moves on the lower support 2, supported by the two rollers 3.2.1 rolling in mutually perpendicular directions on the slide rail 7, resulting in high stability.
[0035] The upper support 4 includes a rectangular frame 4.1, which is fixed to the column 6.1 at the high end of the column group 6 and the middle column 6.1. The support 4.2 of the winch 5 is fixed in the middle of the rectangular frame 4.1. A guide wheel 13 rotates at the top of the high end of the upper support 4, and the traction rope of the winch 5 passes around the guide wheel 13.
[0036] It also includes a PLC controller 14 and contact switches 15. A trigger rod 16 is fixed on the reduction gear 3, and contact switches 15 are respectively provided at both ends of the side rod 2.1. The signal output terminal of the contact switch 15 is connected to the signal receiving terminal of the PLC controller 14. The PLC controller 14 is electrically connected to the winch 5. When the winch 5 pulls the reduction gear 3 to rise to the high end of the rolling plate 1, or when the winch 5 pulls the reduction gear 3 to descend to the low end of the rolling plate 1 by its own weight, the trigger rod 16 touches the contact switch 15 at the corresponding position, and the signal is fed back to the PLC controller 14. The PLC controller 14 controls the winch 5 to stop.
[0037] Working principle: When this device is in use, the side rod 2.1 slides up and down on the corresponding column 6.1. It is adjusted so that the distance from the high end of the side rod 2.1 to the rolling plate 1 is less than the distance from the low end of the side rod 2.1 to the rolling plate 1. This makes the roller 8 of the deceleration frame 3 abut against the electrode, and the distance from the low end of the side rod 2.1 to the rolling plate 1 increases. The deceleration frame 3 moves along the side rod 2.1 to the low end of the side rod 2.1, and the roller 8 just leaves the electrode.
[0038] In this device, the electrode is tilted onto the rolling plate 1 by the tray between the electrode receiving plate and the cooling roller track. The roller 8 at the higher end of the deceleration frame 3 holds the electrode against it. The winch 5 slowly releases the traction rope, and the deceleration frame 3 moves obliquely to the lower end along the lower support 2 by its own weight, while simultaneously rolling the electrode to the cooling roller track. The roller 8 rotates with the electrode to avoid damage to the electrode. The lowering speed of the traction rope of the winch 5 is controlled so that the electrode rolls at a suitable speed, avoiding damage caused by excessive speed during the rolling process. It also replaces manual labor and avoids the harm to human health caused by high temperature and strong rolling force.
[0039] When the winch 5 pulls the reducer 3 to rise to the high end of the rolling plate 1, or when the winch 5 pulls the reducer 3 to descend to the low end of the rolling plate 1 by its own weight, the trigger rod 16 touches the contact switch 15 at the corresponding position, and the signal is fed back to the PLC controller 14. The PLC controller 14 then controls the winch 5 to stop.
[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An automatic extrusion electrode lowering device, characterized in that, The system includes a rolling plate, a lower support, a speed reducer, an upper support, and a winch. The rolling plate, the lower support, the speed reducer, and the upper support are arranged at an incline from bottom to top. The winch is fixed to the upper support. The winch's traction rope passes over the upper support and is fixed to the speed reducer. The speed reducer slides along the incline of the lower support and is connected to a corresponding slide rail on the lower support. A roller rotates at the upper end of the speed reducer and is positioned above the rolling plate. It also includes two rows of column groups, each row of column groups consisting of three columns arranged diagonally from high to low, with the rolling plate, the lower support, the deceleration frame and the upper support placed between the two rows of column groups; The lower support includes two symmetrically arranged side rods. The outer side of each side rod is slidably connected to each of the columns in a row of columns. The inner side of each side rod is provided with a slide rail with a U-shaped cross section. The higher end of the side rod slides up and down on the corresponding column to adjust the height of the higher end of the side rod. The middle of the side rod slides up and down on the corresponding column to adjust the height of the lower end of the side rod. The height is adjusted so that the distance from the higher end of the side rod to the rolling plate is less than the distance from the lower end of the side rod to the rolling plate. The column is provided with a long through groove, and the side rod is fixed with a bolt passing through the long through groove. A nut is screwed onto the bolt passing through the long through groove. A lead screw is provided on the column in the middle of each row of column groups and on the column at the highest end. The lead screw includes a screw, a handwheel, and a support plate. The bottom end of the screw is rotatably connected to the side rod, and the top end of the screw passes through the support plate and is screwed to the center of the handwheel. The support plate is fixed to the column, and the support plate is provided with a sliding groove through which the screw passes.
2. The automatic lowering device for extruded electrodes according to claim 1, characterized in that: The speed reducer includes an H-shaped bracket, with the roller rotatably mounted at the high end of the H-shaped bracket. The H-shaped bracket is positioned between two side rods. At least two sets of rollers are provided on each side of the H-shaped bracket. Each set of rollers includes two rollers with their axles perpendicular to each other. The rollers are rotatably connected to the side of the H-shaped bracket. One of the rollers rolls within the slide rail, while the other roller rolls against the top surface of the slide rail.
3. The automatic lowering device for extruded electrodes according to claim 2, characterized in that: The upper support includes a rectangular frame, which is fixed to the column at the upper end of the column group and the middle column. The support of the winch is fixed in the middle of the rectangular frame. A guide wheel is rotatably mounted on the top of the upper support, and the traction rope of the winch passes around the guide wheel.
4. The automatic lowering device for extruded electrodes according to claim 3, characterized in that: It also includes a PLC controller and contact switches. A trigger rod is fixed on the reduction gear frame, and the contact switches are respectively provided at both ends of the side rod. The signal output terminal of the contact switch is connected to the signal receiving terminal of the PLC controller, and the PLC controller is electrically connected to the winch.
Citation Information
Patent Citations
Slow-ascending and slow-descending loading and unloading machine for cement pipe fittings
CN109095206A