A graphite electrode lengthening device
Patent Information
- Application Number
- CN202522391874.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-11
AI Technical Summary
In existing technologies, the graphite electrode extension operation needs to be completed manually, which leads to a decrease in the electric furnace operating rate, an increase in energy consumption, high labor intensity, and the risk of working at height.
A graphite electrode extension device was designed, including an electrode clamping and rotating mechanism, a transmission mechanism, a driving mechanism, a reset mechanism, and a limiting mechanism, to realize the automatic extension of graphite electrodes without interrupting power to the electric furnace.
This eliminates the need for manual high-altitude work, increases the electric furnace's operating rate, reduces energy consumption, decreases the labor intensity of operators, and ensures the safety and reliability of the electrode extension process.
Smart Images
Figure CN224935806U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric furnace smelting equipment, and in particular to a graphite electrode extension device. Background Technology
[0002] Electric arc furnaces, refining furnaces, and submerged arc furnaces are important electric furnace smelting equipment, and graphite electrodes are widely used in them. During production, electrical energy is input into the electric furnace through graphite electrodes to melt and smelt the raw materials inside. During normal production, graphite electrodes are consumed by the electric arc, chemical reactions, and oxidation, resulting in a continuous reduction in their length. Therefore, electrode extension operations are necessary to meet smelting requirements. Currently, smelting enterprises mostly use manual extension methods to complete this operation. During this process, the electric furnace is de-energized and shut down. Operators climb to the top of the furnace, use a crane to hoist the electrodes to the top, and manually connect and tighten the extensions. This method requires the electrode extension operation to be carried out after the electric furnace is de-energized, leading to reduced furnace operating rates, increased energy consumption, and reduced output. Furthermore, it involves high labor intensity for operators and carries the risk of working at height. Utility Model Content
[0003] To overcome the problems associated with manually extending graphite electrodes, this invention proposes a graphite electrode extension device. The device consists of an electrode clamping and rotating mechanism, a transmission mechanism, a drive mechanism, a reset mechanism, a limiting mechanism, and connecting parts. Through a simple and reliable mechanism, graphite electrode extension is achieved, avoiding the need for workers to climb to the top of the electric furnace to manually extend the electrodes. Furthermore, electrode extension can be performed without interrupting the power supply to the electric furnace.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A graphite electrode extension device, comprising an electrode clamping and rotating mechanism, a transmission mechanism, a driving mechanism, a reset mechanism, a limiting mechanism, and a connecting component; including an inner ring plate, an outer ring plate, a connecting component, a clamping plate, a limiting post, a guide post, a spring, a ball bearing, a steel ball, a driving mechanism, a slewing bearing, a first pin, a cotter pin, a second pin, a first bolt assembly, and a second bolt assembly; the first pin passes sequentially from top to bottom through a third pin hole on the first top plate of the outer ring plate, ... The fifth pin hole on the clamping plate, the fourth pin hole on the second top plate of the outer ring plate, and the cotter pin connect the outer ring plate to the end of the clamping plate furthest from the center of the inner ring plate; the second pin passes through the first pin hole on the cover plate of the inner ring plate, the sixth pin hole on the clamping plate, and the second pin hole on the fan-shaped plate of the inner ring plate in sequence from top to bottom, and the cotter pin connects the inner ring plate to the end of the clamping plate closest to the center of the inner ring plate; the inner ring plate, outer ring plate, clamping plate, first pin, cotter pin, and second pin together form the electrode clamping and rotating mechanism.
[0005] Furthermore, the clamping plate has a fifth pin hole, a sixth pin hole, and a toothed friction surface; the fifth pin hole is an oblong hole, and the sixth pin hole is a round hole.
[0006] Furthermore, the inner ring plate is welded together from a cover plate, a first ring plate, an arc-shaped plate, a first stiffening plate, a sector-shaped plate, and a first connecting plate; the cover plate has threaded holes and a first pin hole, and the corresponding positions of the sector-shaped plate and the cover plate have second pin holes.
[0007] Furthermore, the outer ring plate is welded together from a first top plate, a second top plate, a second ring plate, a second connecting plate, a second stiffening plate, and a third stiffening plate; there is a third pin hole on the first top plate, and a fourth pin hole at the corresponding position on the second top plate and the first top plate.
[0008] Furthermore, the upper end of the guide post and the cover plate of the inner ring plate are connected by a threaded hole, the spring is installed on the outside of it, the lower end of the spring is installed on the ball cage, and the steel ball is installed between the lower end of the ball cage and the upper surface of the second connecting plate of the outer ring plate, forming a reset mechanism.
[0009] Furthermore, the upper end of the limiting post and the cover plate of the inner ring plate are connected by threaded holes to form a limiting mechanism.
[0010] Furthermore, the drive mechanism consists of gears and a hydraulic motor.
[0011] Furthermore, the outer ring gear of the slewing bearing meshes with the gear of the drive mechanism to form a transmission mechanism.
[0012] Furthermore, the connector is welded together from a connecting sleeve, flange, and gasket.
[0013] The beneficial effects of this utility model are as follows: The electrode clamping and rotating mechanism, composed of an inner ring plate, an outer ring plate, a clamping plate, a first pin, a cotter pin, and a second pin, rotates under the drive of the driving mechanism. This causes the ends of the clamping plate furthest from the center of the inner ring plate to rotate around the pins connected to the inner ring plate, thus clamping the new electrode. As the outer ring plate continues to rotate, it drives the new electrode to rotate, causing the new electrode and the working electrode to engage and tighten. When the gear of the driving mechanism rotates in the opposite direction, the clamping plate releases the new electrode, and the inner ring plate and the electrode extension device are reset through a reset mechanism composed of a guide post, spring, ball bearing, and steel balls. The use of a limiting post ensures the safe engagement of the new electrode and the working electrode during the electrode extension process, preventing damage to the connecting threads. Compared with existing electrode extension devices, this utility model has a simple structure, is easy to maintain, and has high operational reliability. It eliminates the need for workers to climb to the top of the electric furnace to manually complete the electrode extension, and allows the electrode extension operation to be completed without interrupting the power supply to the electric furnace, greatly benefiting the normal production of smelting enterprises. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a front view (schematic diagram) of the present invention.
[0016] Figure 2 This is a top view (schematic diagram) of the present invention.
[0017] Figure 3 for Figure 2 A cross-sectional view (schematic diagram) of AA.
[0018] Figure 4 for Figure 2 BB cross-sectional view (schematic diagram).
[0019] Figure 5 for Figure 4 Enlarged view of part I (schematic diagram).
[0020] Figure 6 This is a three-dimensional assembly drawing (schematic diagram) of the present utility model.
[0021] Figure 7 This is a top view (schematic diagram) of the inner ring plate of this utility model.
[0022] Figure 8 for Figure 7 CC cross-sectional view (schematic diagram).
[0023] Figure 9 This is a left view (schematic diagram) of the inner ring plate of this utility model.
[0024] Figure 10 This is a bottom view (schematic diagram) of the inner ring plate of this utility model.
[0025] Figure 11 This is a schematic diagram of the outer ring plate of this utility model.
[0026] Figure 12 This is a top view (schematic diagram) of the outer ring plate of this utility model.
[0027] Figure 13 for Figure 12 DD cross-sectional view (schematic diagram).
[0028] Figure 14 for Figure 11 EE sectional view (schematic diagram).
[0029] Figure 15 for Figure 11 FF sectional view (schematic diagram).
[0030] Figure 16 This is a top view (schematic diagram) of the connector of this utility model.
[0031] Figure 17 for Figure 16 A cross-sectional view of GG (illustrative diagram).
[0032] Figure 18 This is a top view (schematic diagram) of the clamping plate of this utility model.
[0033] Figure 19 for Figure 18 A partial enlarged view (schematic diagram) of part II.
[0034] In the diagram: 1. Inner ring plate; 101. Cover plate; 102. First ring plate; 103. Arc-shaped plate; 104. First rib plate; 105. Fan-shaped plate; 106. First connecting plate; 107. Threaded hole; 108. First pin hole; 109. Second pin hole; 2. Outer ring plate; 201. First top plate; 202. Second top plate; 203. Second ring plate; 204. Second connecting plate; 205. Second rib plate; 206. Third rib plate; 207. Third pin hole; 208. Fourth pin hole; 3. Connector; 301. Connection 302. Cylinder; 303. Flange; 304. Gasket; 4. Pressure plate; 405. Fifth pin hole; 406. Sixth pin hole; 407. Toothed friction surface; 5. Limiting post; 6. Guide post; 7. Spring; 8. Ball cage; 9. Steel ball; 10. Drive mechanism; 1001. Gear; 1002. Hydraulic motor; 11. Slewing bearing; 12. First pin; 13. Cotter pin; 14. Second pin; 15. First bolt assembly; 16. Second bolt assembly; 17. Handler disc spring brake; 18. Working electrode; 19. New electrode. Detailed Implementation
[0035] Figures 1-6 This is a schematic diagram of the overall structure and working state of this utility model. The electrode extension device consists of an electrode clamping and rotating mechanism, a transmission mechanism, a drive mechanism, a reset mechanism, a limiting mechanism, and connecting parts, including an inner ring plate 1, an outer ring plate 2, a connecting plate 3, a pressing plate 4, a limiting post 5, a guide post 6, a spring 7, a ball bearing 8, a steel ball 9, a drive mechanism 10, a slewing bearing 11, a first pin 12, a cotter pin 13, a second pin 14, a first bolt assembly 15, and a second bolt assembly 16.
[0036] The first pin 12 passes through the third pin hole 207 on the first top plate 201 of the outer ring plate 2, the fifth pin hole 401 on the pressure plate 4, the fourth pin hole 208 on the second top plate 202 of the outer ring plate 2, and the cotter pin 13 to connect the outer ring plate 2 and the pressure plate 4 at the ends away from the center of the inner ring plate 2. The second pin 14 passes through the first pin hole 108 on the cover plate 101 of the inner ring plate 1, the sixth pin hole 402 on the pressure plate 4, the second pin hole 109 on the fan-shaped plate 105 of the inner ring plate 1, and the cotter pin 13 to connect the inner ring plate 1 and the pressure plate 4 at the ends near the center of the inner ring plate 2. The inner ring plate 1, the outer ring plate 2, the pressure plate 4, the first pin 12, the cotter pin 13 and the second pin 14 together form an electrode clamping and rotating mechanism.
[0037] The upper end of the guide post 6 and the cover plate 101 of the inner ring plate 1 are connected by a threaded hole 107. The spring 7 is installed on the outside of it. The lower end of the spring 7 is installed on the ball frame 8. The steel ball 9 is installed between the lower end of the ball frame 8 and the upper end face of the second connecting plate 204 of the outer ring plate 2, forming a reset mechanism.
[0038] The upper end of the limiting post 5 and the cover plate 101 of the inner ring plate 1 are connected by a threaded hole 107 to form a limiting mechanism.
[0039] The drive mechanism 10 consists of a gear 1001 and a hydraulic motor 1002.
[0040] The outer ring gear of the slewing bearing 11 meshes with the gear 1001 of the drive mechanism 10 to form a transmission mechanism.
[0041] The connector 3 is welded together from the connecting cylinder 301, the flange 302 and the gasket 303.
[0042] The lower end of the connector 3 is mounted on the handle disc spring brake 17, and the working electrode 18 is held tightly by the handle disc spring brake 17.
[0043] Figures 7-10 This is a schematic diagram of the inner ring plate 1 of this utility model. The inner ring plate 1 is welded together from a cover plate 101, a first ring plate 102, an arc-shaped plate 103, a first stiffening plate 104, a sector-shaped plate 105, and a first connecting plate 106. The cover plate 101 has a threaded hole 107 and a first pin hole 108, and the sector-shaped plate 105 and the cover plate 101 have corresponding second pin holes 109.
[0044] Figures 11-15 This is a schematic diagram of the outer ring plate 2 of this utility model. The outer ring plate 2 is welded together from a first top plate 201, a second top plate 202, a second ring plate 203, a second connecting plate 204, a second stiffening plate 205, and a third stiffening plate 206; there is a third pin hole 207 on the first top plate 201, and a fourth pin hole 208 at the corresponding positions on the second top plate 202 and the first top plate 201.
[0045] Figure 16 and Figure 17 This is a schematic diagram of the connector 3 of this utility model. The connector 3 is welded together from a connecting cylinder 301, a flange 302, and a gasket 303.
[0046] Figure 18 and Figure 19 This is a schematic diagram of the pressing plate 4 of this utility model. The pressing plate 4 has a fifth pin hole 401, a sixth pin hole 402, and a toothed friction surface 403; the fifth pin hole 401 is an oblong hole, and the sixth pin hole 402 is a round hole.
[0047] The working process of this utility model is as follows: The new electrode 19 is hoisted to the top of the device, and then its lower end is inserted into the inner ring plate 1 of the device at a predetermined height. The hydraulic motor 1002 is started, and the hydraulic motor 1002 drives the gear 1001 mounted on it to rotate counterclockwise (viewed from above). The gear 1001 then drives the outer ring of the slewing bearing 11 to rotate clockwise. Since the outer ring of the slewing bearing 11 and the outer ring plate 2 are connected by multiple first bolt assemblies 15, the outer ring plate 2 also rotates clockwise. The outer ring plate 2 and the stationary... The inner ring plates 1 begin to rotate relative to each other. The outer ring plate 2, through the three first pins 12, simultaneously drives the three clamping plates 4 connected thereto to rotate clockwise around the second pins 14 connected to the inner ring plate 1. When the outer ring plate 2 rotates to a certain position, the three clamping plates 4 clamp the new electrode 19. When the hydraulic motor 1002 drives the gear 1001 mounted thereto to continue to rotate counterclockwise, the new electrode 19 begins to rotate clockwise passively, and then the outer tapered thread at its lower end and the inner tapered thread at the upper end of the working electrode 18 are tightened. During the process of clamping the new electrode 19 with the working electrode 18 by the three clamping plates 4, the spring 7 installed on the three guide posts 6 and the ball frame 8 is compressed; the steel ball 9, which is mounted on the lower end of the ball frame 8, moves clockwise around the common center line of the inner ring plate 1 and the outer ring plate 2 along the upper end face of the second connecting plate 204 of the outer ring plate 2; the limiting post 5 installed on the inner ring plate 1 also moves clockwise around the center line of the inner ring plate 1 and the outer ring plate 2 at the same time. When its lower end reaches the upper end face of the second connecting plate 204 of the outer ring plate 2, the tapered thread tightening and engagement process of the new electrode 19 and the working electrode 18 ends, realizing the electrode extension. Subsequently, the hydraulic motor 1002 rotates in the reverse direction, and the gear 1001 mounted on it rotates clockwise (viewed from above). The gear 1001 then drives the outer ring of the slewing bearing 11 to rotate counterclockwise, which in turn drives the outer ring plate 2 to rotate counterclockwise. The three clamping plates 4 release the new electrode 19, and under the force of the spring 7, the inner ring plate 1 returns to its initial position, and the electrode extension device resets. To prevent the new electrode 19 from slipping during tightening after being clamped by the clamping plates 4, there is a toothed friction surface 403 on the part of the arc-shaped side of the clamping plate 4 that contacts the cylindrical surface of the new electrode 19.
[0048] In the description of this utility model, it should be understood that the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc. In practical applications, those skilled in the art can determine the specific quantity based on calculation or design experience.
[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A graphite electrode extension device, comprising an electrode clamping and rotating mechanism, a transmission mechanism, a driving mechanism, a reset mechanism, a limiting mechanism, and a connecting component; including an inner ring plate (1), an outer ring plate (2), a connecting component (3), a clamping plate (4), a limiting post (5), a guide post (6), a spring (7), a ball bearing (8), a steel ball (9), a driving mechanism (10), a slewing bearing (11), a first pin (12), a cotter pin (13), a second pin (14), a first bolt assembly (15), and a second bolt assembly (16); characterized in that: The first pin (12) passes through the third pin hole (207) on the first top plate (201) of the outer ring plate (2), the fifth pin hole (401) on the clamping plate (4), and the fourth pin hole (208) on the second top plate (202) of the outer ring plate (2) from top to bottom, and the cotter pin (13) connects the outer ring plate (2) and the clamping plate (4) to the end away from the center of the inner ring plate (1); the second pin (14) passes through the cover plate (10) of the inner ring plate (1) from top to bottom. The first pin hole (108) on the inner ring plate (1), the sixth pin hole (402) on the clamping plate (4), the second pin hole (109) on the fan-shaped plate (105) of the inner ring plate (1), and the cotter pin (13) connect the inner ring plate (1) and the clamping plate (4) near the center of the inner ring plate (1); the inner ring plate (1), the outer ring plate (2), the clamping plate (4), the first pin (12), the cotter pin (13) and the second pin (14) together form the electrode clamping and rotating mechanism.
2. The graphite electrode extension device according to claim 1, characterized in that: The clamping plate (4) has a fifth pin hole (401), a sixth pin hole (402) and a toothed friction surface (403). The fifth pin hole (401) is an oblong hole and the sixth pin hole (402) is a round hole.
3. The graphite electrode extension device according to claim 2, characterized in that: The inner ring plate (1) is welded together from a cover plate (101), a first ring plate (102), an arc plate (103), a first stiffener plate (104), a fan-shaped plate (105), and a first connecting plate (106). The cover plate (101) has a threaded hole (107) and a first pin hole (108), and the corresponding positions of the fan-shaped plate (105) and the cover plate (101) have a second pin hole (109).
4. The graphite electrode extension device according to claim 3, characterized in that: The outer ring plate (2) is welded from the first top plate (201), the second top plate (202), the second ring plate (203), the second connecting plate (204), the second stiffening plate (205), and the third stiffening plate (206); there is a third pin hole (207) on the first top plate (201), and a fourth pin hole (208) at the corresponding position on the second top plate (202) and the first top plate (201).
5. The graphite electrode extension device according to claim 4, characterized in that: The upper end of the guide post (6) and the cover plate (101) of the inner ring plate (1) are connected by a threaded hole (107). The spring (7) is installed on the outside of it. The lower end of the spring (7) is installed on the ball frame (8). The steel ball (9) is installed between the lower end of the ball frame (8) and the upper end face of the second connecting plate (204) of the outer ring plate (2), forming a reset mechanism.
6. The graphite electrode extension device according to claim 5, characterized in that: The upper end of the limiting post (5) and the cover plate (101) of the inner ring plate (1) are connected by a threaded hole (107) to form a limiting mechanism.
7. The graphite electrode extension device according to any one of claims 1 to 6, characterized in that: The drive mechanism (10) consists of a gear (1001) and a hydraulic motor (1002).
8. The graphite electrode extension device according to claim 7, characterized in that: The outer ring gear of the slewing bearing (11) meshes with the gear (1001) of the drive mechanism (10) to form a transmission mechanism.
9. The graphite electrode extension device according to claim 8, characterized in that: The connector (3) is welded from the connecting cylinder (301), flange (302) and gasket (303).