A graphite electrode crookedness measuring device

Abstract

The application belongs to the technical field of graphite electrode performance detection, and specifically discloses a graphite electrode bending degree measuring device, which comprises a base, the upper wall of the base is symmetrically provided with mounting plates, a rotating hole is provided in the mounting plates, a rotating ring body is rotatably arranged in the rotating hole, clamping and fixing assemblies are arranged in the rotating ring body, a graphite electrode is arranged between the two clamping and fixing assemblies, the upper ends of the two mounting plates are respectively provided with vertical plates, a threaded rod and a rotating rod are arranged between the vertical plates, the rotating rod is arranged on the upper side of the threaded rod, linkage blocks are arranged on the rotating rod and the threaded rod, mounting holes are provided in the upper ends of the linkage blocks, rotating sleeves are rotatably arranged in the mounting holes, the rotating sleeves are slidably arranged on the rotating rod, end portions of the rotating sleeves are fixedly provided with sticking plates, scale papers are stuck on the sticking plates, and the rotating rod penetrates the sticking plates and the scale papers.

Description

Technical Field

[0001] This invention belongs to the field of graphite electrode performance testing technology, specifically referring to a graphite electrode bending measurement device. Background Technology

[0002] Graphite electrodes are mainly made from petroleum coke and needle coke as raw materials, with coal tar pitch as a 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 to heat and melt the furnace charge in an electric arc furnace.

[0003] Bending of graphite electrodes significantly affects their electrical conductivity, mechanical strength, and service life, specifically manifesting as increased resistivity, decreased flexural strength, and accelerated localized oxidation loss. Graphite electrodes are subjected to high temperatures and mechanical stress during electric arc furnace smelting. Installation deviations, furnace charge impacts, or thermal shocks can cause bending deformation of the graphite electrodes, leading to performance degradation. Therefore, it is necessary to measure the bending rate of graphite electrodes.

[0004] Patent CN218847105U discloses a graphite electrode bending measurement device, comprising an aluminum alloy profile and a sliding rod. The sliding rod is slidably mounted on the end of the aluminum alloy profile. Straight grooves are formed at both ends of the aluminum alloy profile, and the sliding rod is slidably mounted within the straight grooves. A clamping frame and a fixing frame are provided on the sliding rod. The fixing frame is fixedly mounted on the sliding rod, and the clamping frame is slidably sleeved on the sliding rod. The clamping frame and the fixing frame are relatively fixed. A movable frame is provided at the center of the aluminum alloy profile, and a movable rod is slidably mounted within the movable frame. A detection rod is provided on the movable rod, which can abut against the graphite electrode to be tested. The movable rod has vertical graduations. This device cannot determine the bending direction of the graphite electrode and make adjustments during installation, nor can it record and mark the bending value of corresponding points on the graphite electrode.

[0005] Therefore, a graphite electrode bending measurement device is needed to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a graphite electrode curvature measuring device that uniformly detects the curvature on the graphite electrode and automatically displays the curvature value on a scale paper.

[0007] The technical solution adopted by this invention is as follows: This invention proposes a graphite electrode bending degree measuring device, including a base, mounting plates symmetrically arranged on the upper wall of the base, a rotating hole penetrating the mounting plate, a rotating ring rotatably arranged within the rotating hole, a clamping and fixing assembly inside the rotating ring, a graphite electrode arranged between two clamping and fixing assemblies, vertical plates respectively arranged at the upper ends of the two mounting plates, a threaded rod and a rotating rod arranged between the vertical plates, the rotating rod being arranged above the threaded rod, a linkage block arranged on the rotating rod and the threaded rod, a mounting hole penetrating the upper end of the linkage block, a rotating sleeve rotatably arranged within the mounting hole, the rotating sleeve slidingly arranged on the rotating rod, an adhesive plate fixedly arranged at the end of the rotating sleeve, a scale paper adhered to the adhesive plate, the rotating rod penetrating the adhesive plate and the scale paper, a ratchet intermittent actuation assembly arranged at one end of the threaded rod and the rotating rod, a support plate arranged at the lower end of the linkage block, automatic contact measuring assemblies symmetrically arranged at both ends of the support plate, a measurement size conversion assembly arranged on the automatic contact measuring assembly, and a measurement mark assembly arranged on the measurement size conversion assembly.

[0008] Furthermore, the automatic contact measurement assembly includes a fixed cylinder, a movable rod, a connecting frame, a roller, and a spring. The fixed cylinder is a cylindrical structure with an open bottom end, and its lower end is mounted through a support plate. The upper end of the movable rod is slidably mounted inside the fixed cylinder. The spring is mounted inside the fixed cylinder, with its two ends respectively mounted on the inner bottom wall of the fixed cylinder and on the movable rod. The connecting frame is mounted on the lower end of the movable rod, and the two ends of the roller are rotatably mounted on the inner side walls of the two connecting frames.

[0009] Furthermore, the measurement size conversion component includes a movable cylinder, a fixed tube, and a linkage plate. The lower end of the fixed tube is located on the upper end face of the fixed cylinder and communicates with the inside of the fixed cylinder. The movable cylinder is sleeved on the fixed tube, and the linkage plate is located at the upper end of the two movable cylinders.

[0010] Furthermore, the measuring mark assembly includes a fixed block, a sliding rod, a second spring, a baffle, an electromagnet, a second electromagnet, a mounting rod, and a marker. The fixed block is fixedly mounted on the lower wall of the linkage plate. The sliding rod is slidably mounted on the fixed block. The lower end of the baffle is located at one end of the sliding rod. The second spring is sleeved on the sliding rod, with its two ends respectively located on the baffle and the fixed block. The first electromagnet is located on the side wall of the linkage plate, and the second electromagnet is located at the upper end of the baffle. The first and second electromagnets are aligned in the direction of sliding rod movement. The upper end of the mounting rod is located at the other end of the sliding rod, and the marker is located at the lower end of the mounting rod.

[0011] Furthermore, the ratchet intermittent actuation assembly includes a first connecting shaft, a first rotating plate, a second connecting shaft, a second rotating plate, a reducer, a lever, and a linkage rod. One end of the first connecting shaft is located at the end of the threaded rod, the first rotating plate is located at the other end of the first connecting shaft, one end of the lever is located on the outer side wall of the first rotating plate, the reducer is located on the upper part of the outer side wall of the vertical plate, one end of the reducer is connected to the rotating rod, the second connecting shaft is located at the other end of the reducer, the second rotating plate is located at the end of the second connecting shaft, and the linkage rod is arranged in an array around the axis on the outer wall of the second rotating plate.

[0012] Furthermore, the clamping and fixing assembly includes a rotating shaft, a clamping plate, a connecting plate, and tightening bolts. The rotating shaft is symmetrically rotatably disposed on the inner side wall of the rotating ring. The clamping plate is arc-shaped and disposed at the end of the rotating shaft. The connecting plate is symmetrically disposed at both ends of the clamping plate. The connecting plates disposed opposite each other on the two clamping plates are connected together by tightening bolts.

[0013] Furthermore, the outer wall of the rotating rod is provided with a limiting groove along the axial direction, and the inner wall of the rotating sleeve is provided with a limiting strip along the axial direction, the limiting strip being slidably disposed in the limiting groove.

[0014] Furthermore, a motor is provided on the side wall of the vertical plate, and the motor is connected to the threaded rod.

[0015] Furthermore, the adhesive board and the scale paper are circular, and the scale paper has scale lines. The scale lines along the radial direction of the scale paper form a group, and each group of scale lines is arranged radially at equal intervals around the axis of the scale paper.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] 1. The threaded rod drives the linkage block to move, which in turn drives the support plate and rotating sleeve to move, thus causing the roller to move tightly against the graphite electrode. The threaded rod drives the connecting shaft, rotating plate one, and lever to rotate. Each rotation of the lever actuates the linkage rod once, which drives rotating plate two and connecting shaft two to rotate. Connecting shaft two drives the rotating rod to rotate via a reducer. The rotating rod drives the rotating sleeve, adhesive plate, and scale paper to rotate at an angle, so that the marker aligns with the next set of scale lines. At this time, electromagnet one and electromagnet two are activated. Electromagnet one and electromagnet two repel each other, and the baffle moves outward, thus driving the marker to move toward the scale paper, thereby marking the curvature value on the scale paper.

[0018] 2. During the movement of the roller along the graphite electrode, if the graphite electrode bends, the spring pushes the movable rod downwards, and the movable rod pushes the connecting frame and roller downwards. The roller is pressed tightly against the graphite electrode, and the hydraulic oil in the fixed tube and the movable cylinder is drawn into the fixed cylinder. The movable cylinder drives the linkage plate, the fixed block, the slide rod and the mounting rod to move downwards. The mounting rod drives the marker to move downwards. Each time the roller moves, it can drive the marker to move. The position where the marker moves is the degree of bending of the graphite electrode. Attached Figure Description

[0019] Figure 1 This is a frontal perspective view of a graphite electrode bending measurement device proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the reverse three-dimensional structure of a graphite electrode bending measurement device proposed in this invention;

[0021] Figure 3 A three-dimensional schematic diagram of the automatic contact measurement component and the measurement size conversion component;

[0022] Figure 4 A three-dimensional structural diagram of the measurement marking component;

[0023] Figure 5 A three-dimensional structural diagram of the adhesive board, scale paper, and rotating sleeve;

[0024] Figure 6 A three-dimensional structural diagram of the ratchet intermittent actuation assembly;

[0025] Figure 7 for Figure 2 Enlarged view of section A in the middle;

[0026] Figure 8 for Figure 2 Enlarged view of section B;

[0027] Figure 9 This is a three-dimensional structural diagram of the clamping and fixing assembly.

[0028] The components include: 1. Base; 2. Mounting plate; 3. Rotating hole; 4. Rotating ring; 5. Clamping and fixing assembly; 6. Graphite electrode; 7. Vertical plate; 8. Threaded rod; 9. Rotating rod; 10. Linkage block; 11. Mounting hole; 12. Rotating sleeve; 13. Adhesive plate; 14. Scale paper; 15. Ratchet intermittent actuation assembly; 16. Support plate; 17. Automatic contact measurement assembly; 18. Measurement size conversion assembly; 19. Measurement marking assembly; 20. Fixed cylinder; 21. Movable rod; 22. Connecting frame; 23. Roller; 24. Spring 1; 2 5. Movable cylinder; 26. Fixed tube; 27. Linkage plate; 28. Fixed block; 29. ​​Slide rod; 30. Spring II; 31. Baffle; 32. Electromagnet I; 33. Electromagnet II; 34. Mounting rod; 35. Marker pen; 36. Connecting shaft I; 37. Rotating plate I; 38. Connecting shaft II; 39. Rotating plate II; 40. Reducer; 41. Lever; 42. Linkage rod; 43. Rotating shaft; 44. Clamping plate; 45. Connecting plate; 46. Tightening bolt; 47. Limit groove; 48. Limit strip; 49. Motor; 50. Scale line.

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] like Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, this invention proposes a graphite electrode bending degree measuring device, including a base 1. The upper wall of the base 1 is symmetrically provided with mounting plates 2. A rotating hole 3 is provided through the mounting plate 2. A rotating ring 4 is rotatably disposed within the rotating hole 3. A clamping and fixing assembly 5 is provided inside the rotating ring 4. A graphite electrode 6 is disposed between the two clamping and fixing assemblies 5. Vertical plates 7 are respectively provided at the upper ends of the two mounting plates 2. A threaded rod 8 and a rotating rod 9 are provided between the vertical plates 7. The rotating rod 9 is disposed above the threaded rod 8. A linkage block 10 is provided on the rotating rod 9 and the threaded rod 8. A mounting hole 11 is provided through the upper end of the linkage block 10. A rotating sleeve 12 is rotatably disposed within the mounting hole 11. The rotating sleeve 12 is slidably disposed on the rotating rod 9. An adhesive plate 13 is fixedly disposed at the end of the rotating sleeve 12. A scale paper 14 is attached to the adhesive plate 13. The rotating rod 9 passes through the adhesive plate 13 and the scale paper 14. A ratchet intermittent actuation assembly 15 is disposed at one end of the threaded rod 8 and the rotating rod 9. A support plate 16 is disposed at the lower end of the linkage block 10. Automatic contact measurement assemblies 17 are symmetrically disposed at both ends of the support plate 16. A measurement size conversion assembly 18 is disposed on the automatic contact measurement assembly 17. A measurement mark assembly 19 is disposed on the measurement size conversion assembly 18.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, the automatic contact measurement assembly 17 includes a fixed cylinder 20, a movable rod 21, a connecting frame 22, a roller 23, and a spring 24. The fixed cylinder 20 is a cylindrical structure with an open lower end, and the lower end of the fixed cylinder 20 is mounted on the support plate 16. The upper end of the movable rod 21 is slidably mounted inside the fixed cylinder 20. The spring 24 is mounted inside the fixed cylinder 20, and its two ends are respectively mounted on the inner bottom wall of the fixed cylinder 20 and the movable rod 21. The connecting frame 22 is mounted at the lower end of the movable rod 21. The two ends of the roller 23 are rotatably mounted on the inner side walls of the two connecting frames 22. The fixed cylinder 20, the fixed tube 26, and the movable cylinder 25 are filled with hydraulic oil.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the measurement size conversion component 18 includes a movable cylinder 25, a fixed tube 26, and a linkage plate 27. The lower end of the fixed tube 26 is located on the upper end face of the fixed cylinder 20 and is connected to the inside of the fixed cylinder 20. The movable cylinder 25 is sleeved on the fixed tube 26. The linkage plate 27 is located at the upper end of the two movable cylinders 25. The inner diameter of the fixed cylinder 20 is much larger than the inner diameter of the movable cylinder 25. The distance that the movable rod 21 can move can be amplified by the distance that the movable cylinder 25 can move.

[0035] like Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the measuring mark assembly 19 includes a fixing block 28, a sliding rod 29, a second spring 30, a baffle 31, an electromagnet 32, an electromagnet 33, a mounting rod 34, and a marker pen 35. The fixing block 28 is fixedly mounted on the lower wall of the linkage plate 27. The sliding rod 29 is slidably mounted on the fixing block 28. The lower end of the baffle 31 is located at one end of the sliding rod 29. The second spring 30 is sleeved on the sliding rod 29, with its two ends located on the baffle 31 and the fixing block 28, respectively. The first electromagnet 32 ​​is located on the side wall of the linkage plate 27, and the second electromagnet 33 is located at the upper end of the baffle 31. The first electromagnet 32 ​​and the second electromagnet 33 are aligned in the direction of movement of the sliding rod 29. The upper end of the mounting rod 34 is located at the other end of the sliding rod 29, and the marker pen 35 is located at the lower end of the mounting rod 34. When energized, the first electromagnet 32 ​​and the second electromagnet 33 have the same magnetism.

[0036] like Figure 1 , Figure 2 and Figure 6 As shown, the ratchet intermittent actuation assembly 15 includes a connecting shaft 36, a rotating plate 37, a connecting shaft 38, a rotating plate 39, a reducer 40, a lever 41, and a linkage rod 42. One end of the connecting shaft 36 is located at the end of the threaded rod 8, the rotating plate 37 is located at the other end of the connecting shaft 36, one end of the lever 41 is located on the outer side wall of the rotating plate 37, the reducer 40 is located on the upper part of the outer side wall of the vertical plate 7, and one end of the reducer 40 is connected to the rotating rod 9. The connecting shaft 38 is located at... At the other end of the reducer 40, the second rotating plate 39 is located at the end of the second connecting shaft 38. The linkage rod 42 is arranged in an array around the axis on the outer wall of the second rotating plate 39. Each rotation of the lever 41 causes the linkage rod 42 to rotate by one angle. The linkage rod 42 drives the second rotating plate 39 to rotate and the second connecting shaft 38 to rotate by one angle. The second connecting shaft 38 drives the rotating rod 9 to rotate through the reducer 40. The rotating rod 9 drives the rotating sleeve 12, the adhesive plate 13 and the scale paper 14 to rotate. The marker pen 35 corresponds to the scale line 50 of the next group.

[0037] like Figure 1 and Figure 9 As shown, the clamping and fixing assembly 5 includes a rotating shaft 43, a clamping plate 44, a connecting plate 45, and a tightening bolt 46. The rotating shaft 43 is symmetrically rotated on the inner side wall of the rotating ring 4. The clamping plate 44 is arc-shaped and is located at the end of the rotating shaft 43. The connecting plate 45 is symmetrically located at both ends of the clamping plate 44. The connecting plates 45 arranged opposite to each other on the two clamping plates 44 are connected together by the tightening bolt 46.

[0038] like Figure 2 and Figure 8As shown, the outer wall of the rotating rod 9 is provided with a limiting groove 47 along the axial direction, and the inner wall of the rotating sleeve 12 is provided with a limiting strip 48 along the axial direction. The limiting strip 48 is slidably disposed in the limiting groove 47, so that the rotating sleeve 12 can move on the rotating rod 9 and rotate with the rotating rod 9.

[0039] like Figure 1 and Figure 2 As shown, a motor 49 is provided on the side wall of the vertical plate 7, and the motor 49 is connected to the threaded rod 8.

[0040] like Figure 1 and Figure 5 As shown, the adhesive plate 13 and the scale paper 14 are circular. The scale paper 14 is provided with scale lines 50. The scale lines 50 along the radial direction of the scale paper 14 form a group. Each group of scale lines 50 is arranged radially at equal intervals around the axis of the scale paper 14.

[0041] In practical use, the graphite electrode 6 is passed through the clamping plates 44 inside the rotating ring 4, and then the tightening bolts 46 are rotated to fix both ends of the graphite electrode 6 between the clamping plates 44. If the graphite electrode 6 bends, under the action of gravity, the graphite electrode 6 drives the clamping plates 44 to rotate, and the clamping plates 44 drive the rotating shaft 43 to rotate on the inner wall of the rotating ring 4. At the same time, the rotating ring 4 rotates in the rotating hole 3 of the mounting plate 2, so that the bent side of the graphite electrode 6 rotates to the lower side. Initially... In this state, roller 23 is positioned at one end of graphite electrode 6. Spring 24 presses down on movable rod 21, which in turn presses down on connecting frame 22 and roller 23. Roller 23 is tightly pressed against graphite electrode 6. At this point, the corresponding scale line 50 is recorded. Then, motor 49 is turned on. Motor 49 drives threaded rod 8 to rotate, which in turn drives linkage block 10 to move. Linkage block 10 drives support plate 16 and rotating sleeve 12 to move, which in turn drives fixed cylinder 20, movable rod 21, and connecting frame 22. The roller 23 moves, pressing against the graphite electrode 6. The threaded rod 8 drives the connecting shaft 36 to rotate, which in turn drives the rotating plate 37 to rotate. The rotating plate 37 drives the lever 41 to rotate, and the lever 41 actuates the linkage rod 42 once per revolution. The linkage rod 42 drives the rotating plate 39 to rotate, which in turn drives the connecting shaft 38 to rotate. The connecting shaft 38, via the reducer 40, drives the rotating rod 9 to rotate, which in turn drives the rotating sleeve 12 to rotate. The sleeve 12 drives the adhesive plate 13 to rotate, and the adhesive plate 13 drives the scale paper 14 to rotate at an angle, so that the marker 35 corresponds to the scale line 50 of the next group. At this time, the electromagnet 1 32 and electromagnet 2 33 are turned on. The electromagnet 1 32 and electromagnet 2 33 repel each other, the baffle 31 moves outward, the baffle 31 drives the slide rod 29 to move, the slide rod 29 drives the mounting rod 34 to move, and the mounting rod 34 drives the marker 35 to move toward the scale paper 14, so as to mark the value of the curvature on the scale paper 14.

[0042] During the movement of roller 23 along graphite electrode 6, if graphite electrode 6 bends, spring 24 pushes movable rod 21 downwards, movable rod 21 pushes connecting frame 22 and roller 23 downwards, roller 23 is pressed tightly against graphite electrode 6, hydraulic oil in fixed tube 26 and movable cylinder 25 is drawn into fixed cylinder 20, movable cylinder 25 moves downwards, movable cylinder 25 drives linkage plate 27 to move downwards, linkage plate 27 drives fixed block 28, slide rod 29 and mounting rod 34 to move downwards, mounting rod 34 drives marker pen 35 to move downwards. Each time roller 23 moves, it can drive marker pen 35 to move. The position of marker pen 35 is the degree of bending of graphite electrode 6, so that each time roller 23 moves, marker pen 35 moves a certain distance in the vertical direction, and marker pen 35 marks the degree of bending of graphite electrode 6 on scale paper 14.

[0043] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A graphite electrode bending degree measuring device, comprising a base (1), characterized in that: The upper wall of the base (1) is symmetrically provided with mounting plates (2). A rotating hole (3) is provided through the mounting plate (2). A rotating ring (4) is rotatably provided in the rotating hole (3). A clamping and fixing assembly (5) is provided inside the rotating ring (4). A graphite electrode (6) is provided between the two clamping and fixing assemblies (5). A vertical plate (7) is provided at the upper end of the two mounting plates (2). A threaded rod (8) and a rotating rod (9) are provided between the vertical plates (7). The rotating rod (9) is located on the upper side of the threaded rod (8). A linkage block (10) is provided on the rotating rod (9) and the threaded rod (8). A mounting hole (11) is provided through the upper end of the linkage block (10). A rotating rod (6) is rotatably provided in the mounting hole (11). A rotating sleeve (12) is slidably mounted on a rotating rod (9). An adhesive plate (13) is fixedly mounted at the end of the rotating sleeve (12). A scale paper (14) is pasted on the adhesive plate (13). The rotating rod (9) passes through the adhesive plate (13) and the scale paper (14). A ratchet intermittent actuation assembly (15) is provided at one end of the threaded rod (8) and the rotating rod (9). A support plate (16) is provided at the lower end of the linkage block (10). Automatic contact measurement assemblies (17) are symmetrically provided at both ends of the support plate (16). A measurement size conversion assembly (18) is provided on the automatic contact measurement assembly (17). A measurement mark assembly (19) is provided on the measurement size conversion assembly (18).

2. The graphite electrode bending measurement device according to claim 1, characterized in that: The automatic contact measurement assembly (17) includes a fixed cylinder (20), a movable rod (21), a connecting frame (22), a roller (23), and a spring (24). The fixed cylinder (20) is a cylindrical structure with an open bottom. The lower end of the fixed cylinder (20) is mounted on the support plate (16). The upper end of the movable rod (21) is slidably mounted inside the fixed cylinder (20). The spring (24) is mounted inside the fixed cylinder (20). The two ends of the spring (24) are respectively mounted on the inner bottom wall of the fixed cylinder (20) and the movable rod (21). The connecting frame (22) is mounted on the lower end of the movable rod (21). The two ends of the roller (23) are rotatably mounted on the inner side walls of the two connecting frames (22).

3. The graphite electrode bending measurement device according to claim 2, characterized in that: The measurement size conversion component (18) includes a movable cylinder (25), a fixed tube (26) and a linkage plate (27). The lower end of the fixed tube (26) is located on the upper end face of the fixed cylinder (20) and is connected to the inside of the fixed cylinder (20). The movable cylinder (25) is sleeved on the fixed tube (26). The linkage plate (27) is located at the upper end of the two movable cylinders (25).

4. The graphite electrode bending measurement device according to claim 3, characterized in that: The measuring mark assembly (19) includes a fixed block (28), a slide rod (29), a second spring (30), a baffle (31), an electromagnet (32), a second electromagnet (33), a mounting rod (34), and a marker (35). The fixed block (28) is fixedly mounted on the lower wall of the linkage plate (27). The slide rod (29) is slidably mounted on the fixed block (28). The lower end of the baffle (31) is located at one end of the slide rod (29). The second spring (30) is sleeved on the slide rod (28). 9) The two ends of the second spring (30) are respectively set on the baffle (31) and the fixing block (28), the first electromagnet (32) is set on the side wall of the linkage plate (27), the second electromagnet (33) is set on the upper end of the baffle (31), the first electromagnet (32) and the second electromagnet (33) are aligned in the direction of movement of the slide rod (29), the upper end of the mounting rod (34) is set on the other end of the slide rod (29), and the marker pen (35) is set on the lower end of the mounting rod (34).

5. The graphite electrode bending measurement device according to claim 4, characterized in that: The ratchet intermittent actuation assembly (15) includes a connecting shaft one (36), a rotating plate one (37), a connecting shaft two (38), a rotating plate two (39), a reducer (40), a lever (41), and a linkage rod (42). One end of the connecting shaft one (36) is located at the end of the threaded rod (8), the rotating plate one (37) is located at the other end of the connecting shaft one (36), one end of the lever (41) is located on the outer side wall of the rotating plate one (37), the reducer (40) is located on the upper part of the outer side wall of the vertical plate (7), one end of the reducer (40) is connected to the rotating rod (9), the connecting shaft two (38) is located at the other end of the reducer (40), the rotating plate two (39) is located at the end of the connecting shaft two (38), and the linkage rod (42) is arranged in an array around the axis on the outer wall of the rotating plate two (39).

6. The graphite electrode bending degree measuring device according to claim 5, characterized in that: The clamping and fixing assembly (5) includes a rotating shaft (43), a clamping plate (44), a connecting plate (45), and a tightening bolt (46). The rotating shaft (43) is symmetrically rotated on the inner wall of the rotating ring (4). The clamping plate (44) is arc-shaped and located at the end of the rotating shaft (43). The connecting plate (45) is symmetrically located at both ends of the clamping plate (44). The connecting plates (45) arranged opposite to each other on the two clamping plates (44) are connected together by the tightening bolt (46).

7. The graphite electrode bending measurement device according to claim 6, characterized in that: The outer wall of the rotating rod (9) is provided with a limiting groove (47) along the axial direction, and the inner wall of the rotating sleeve (12) is provided with a limiting strip (48) along the axial direction. The limiting strip (48) is slidably disposed in the limiting groove (47).

8. The graphite electrode bending measurement device according to claim 7, characterized in that: The side wall of the vertical plate (7) is provided with a motor (49), which is connected to the threaded rod (8).

9. The graphite electrode bending measurement device according to claim 8, characterized in that: The adhesive plate (13) and the scale paper (14) are circular. The scale paper (14) is provided with scale lines (50). The scale lines (50) along the radial direction of the scale paper (14) are a group. Each group of scale lines (50) is arranged radially at equal intervals around the axis of the scale paper (14).

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