Graphite electrode column end face verticality detection tool based on laser measurement

Abstract

The invention discloses a graphite electrode column end face perpendicularity detection tool based on laser measurement, which relates to the technical field of detection devices and comprises a base, a supporting device, a swing detection device and a driving device. The swing detection device comprises a telescopic shaft, a swing arm, a detection part and a laser displacement sensor; the detection part is slidably arranged on the swing arm in the direction perpendicular to the axial direction of the telescopic shaft. The laser displacement sensor is arranged on the telescopic shaft, the wall face of the swing arm is fixedly connected with an induction block used in cooperation with the laser displacement sensor, and the laser displacement sensor is used for detecting the horizontal displacement of the induction block. The driving device is used for driving the telescopic shaft to move in the axial direction so that the detection part can abut against the end face of the graphite electrode column. According to the invention, the laser displacement sensor is used for replacing the traditional triangular rule for visual detection, mechanical swing is converted into an electric signal for digital processing, manual observation deviation is eliminated, and the precision and objectivity of graphite electrode end face perpendicularity detection are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, specifically to a laser-based fixture for detecting the perpendicularity of the end face of a graphite electrode post. Background Technology

[0002] Graphite electrodes are high-temperature resistant graphitic conductive materials made from petroleum coke and pitch coke as aggregates and coal tar pitch as binders through processes such as calcination, crushing and grinding, batching, kneading, molding, baking, impregnation, graphitization, and machining. They are called artificial graphite electrodes (or simply graphite electrodes) to distinguish them from natural graphite electrodes made from natural graphite.

[0003] Before being manufactured and shipped, graphite electrode posts need to be inspected, mainly for the perpendicularity and flatness of their ends. If the end faces of the graphite electrode post are not flat, it will lead to poor contact and may even cause safety accidents. Currently, the perpendicularity of graphite electrode end faces is usually inspected using tools such as set squares. The perpendicularity of the graphite electrode end face is determined by visually observing the gap between the right-angle side of the set square and the graphite electrode end face. This method will produce a large deviation and has low inspection accuracy. Therefore, a more accurate perpendicularity inspection fixture needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to provide a laser-based fixture for detecting the perpendicularity of the end face of a graphite electrode post, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser-based fixture for detecting the perpendicularity of the end face of a graphite electrode post, comprising:

[0006] Base, support device, swing detection device and drive device;

[0007] The support device is mounted on the base and is used to support the graphite electrode column;

[0008] The swing detection device includes a telescopic shaft, a swing arm, a detection part, and a laser displacement sensor;

[0009] The telescopic shaft is horizontally and slidably disposed at one end of the base, and the swing arm is rotatably connected to the end of the telescopic shaft facing the graphite electrode post.

[0010] The detection unit is slidably mounted on the swing arm in a direction perpendicular to the axial direction of the telescopic shaft;

[0011] The laser displacement sensor is mounted on the telescopic shaft, and a sensing block that works in conjunction with the laser displacement sensor is fixed to the wall of the swing arm. The laser displacement sensor is used to detect the horizontal displacement of the sensing block.

[0012] The driving device is used to drive the telescopic shaft to move along its axial direction so that the detection part abuts against the end face of the graphite electrode post.

[0013] Furthermore, the support device includes a roller bracket and rollers. The roller bracket is fixed to the top of the base, and rollers are rotatably connected to both sides of the roller bracket. The two rollers form a V-shaped support structure for placing the graphite electrode post.

[0014] Furthermore, it also includes a rotary seat and a fixed seat, wherein the fixed seat is connected to the base and the rotary seat is rotatably connected to the fixed seat;

[0015] The telescopic shaft is keyed to the rotary seat, and the driving device drives the telescopic shaft to move axially relative to the rotary seat.

[0016] The fixed base is also provided with a rotary power mechanism, which is used to drive the rotary base to rotate, thereby driving the telescopic shaft and the swing arm to rotate around the axis of the telescopic shaft.

[0017] Furthermore, the rotary power mechanism includes a drive cylinder, a rack, and a gear;

[0018] The gear is coaxially fixed on the rotary seat, the rack meshes with the gear, the drive cylinder is mounted on the fixed seat, and the cylinder rod of the drive cylinder is connected to the rack.

[0019] Furthermore, each end of the detection unit is fixedly connected to a sliding post, the sliding post slides through the swing arm, the swing arm has a sliding cavity, and the detection unit is located in the sliding cavity;

[0020] Each of the two sliding columns is surrounded by a vibration spring, and the two vibration springs are used to support the detection unit.

[0021] Furthermore, a rolling part is provided at the end of the sliding column away from the detection part;

[0022] The base is provided with a drive ring, and the inner wall of the drive ring is provided with multiple clearance grooves;

[0023] The clearance groove includes a straight inner wall and an inclined inner wall that are connected. When the telescopic shaft rotates and drives the rolling part to pass through the clearance groove, the inclined inner wall squeezes the rolling part, causing the detection part to compress the vibration spring.

[0024] Furthermore, the swing detection device also includes a miniature cylinder and a squeezing block. The miniature cylinder is mounted on the swing arm, and the cylinder rod of the miniature cylinder extends into the swing arm and is connected to the squeezing block. The squeezing block is used to squeeze the detection part to limit its sliding.

[0025] Furthermore, the extrusion block is made of rubber.

[0026] Furthermore, a sliding ring is slidably connected to the telescopic shaft, and the swing arm is connected to the sliding ring via a hinge rod;

[0027] The telescopic shaft is also provided with a return spring and a front limit retaining ring. The return spring is located between the sliding ring and the front limit retaining ring and is used to provide elastic force to the sliding ring toward the front limit retaining ring so that the swing arm maintains an initial state perpendicular to the telescopic shaft.

[0028] Furthermore, a plurality of detection balls are rotatably embedded in the side wall of the detection unit facing the graphite electrode post, and the detection balls protrude from the surface of the detection unit.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. In this invention, a laser displacement sensor replaces the traditional visual inspection using a set square. Mechanical oscillation is converted into electrical signals for digital processing, eliminating human observation bias and significantly improving the accuracy and objectivity of the perpendicularity detection of the graphite electrode column end face. Through the coordination of a drive cylinder, a push cylinder, and a rack and pinion transmission mechanism, automatic feeding, rotation, and scanning of the detection arm are achieved. Operators only need to operate the control cabinet to complete the inspection process, reducing labor intensity and improving inspection efficiency.

[0031] 2. In this invention, a vibration mechanism consisting of a drive ring, a rolling part, and a vibration spring is provided, in conjunction with a miniature cylinder and a pressing block. During the detection process, the detection part can generate random up-and-down reciprocating vibrations and be stopped at random positions. This makes the contact positions (i.e., sampling points) of the detection balls on the electrode end face randomized, avoiding systematic errors that may occur when detecting along a fixed trajectory, and improving the representativeness and reliability of the detection results. In addition, the detection part uses embedded detection balls to contact the graphite electrode end face, converting sliding friction into rolling friction, which reduces detection resistance and avoids hard scratching of the end face of the graphite electrode post during the detection process, thus providing good protection for the graphite electrode post.

[0032] 3. In this invention, the swing arm, through the coordinated design of the hinge rod, sliding ring, return spring, and front and rear limit rings, ensures that the swing arm remains perpendicular to the telescopic shaft in the initial state, guaranteeing the consistency of the detection benchmark. Simultaneously, in the non-detection state, the return spring can quickly reset the mechanism, ensuring structural stability and reliability. Attached Figure Description

[0033] Figure 1This is a schematic diagram of the overall structure of a laser-based graphite electrode post end face perpendicularity detection fixture according to the present invention.

[0034] Figure 2 for Figure 1 A schematic diagram of the positional relationship of the central structure from a first-person perspective;

[0035] Figure 3 for Figure 1 Schematic diagram of the positional relationship of the middle structure from a second perspective;

[0036] Figure 4 for Figure 1 A schematic diagram of the positional relationship of the structure from a third-person perspective;

[0037] Figure 5 for Figure 1 A schematic diagram of the positional relationship of the central structure from the fourth perspective;

[0038] Figure 6 for Figure 5 A magnified schematic diagram of the positional relationship of a local structure at point A in the middle;

[0039] Figure 7 This is a schematic diagram showing the positional relationship between the fixed base, the rotary base, and the swing arm after assembly in this invention.

[0040] Figure 8 for Figure 7 A schematic diagram showing the positional relationship of the structure from another perspective;

[0041] Figure 9 This is a schematic diagram showing the positional relationship of the laser displacement sensor, swing arm, and telescopic shaft after assembly in this invention;

[0042] Figure 10 for Figure 9 A schematic diagram showing the positional relationship of the structure from another perspective;

[0043] Figure 11 for Figure 10 A schematic diagram showing the positional relationship of the middle section after it has been cut open;

[0044] Figure 12 This is a schematic diagram showing the positional relationship of the detection unit, detection ball, and sliding column after assembly in this invention.

[0045] The following are the annotations for each item in the figure: 1. Base; 2. Roller; 3. Drive ring; 4. Swing arm; 5. Laser displacement sensor; 6. Rotary seat; 7. Push cylinder; 8. Drive cylinder; 9. Fixed seat; 10. Rack; 11. Gear; 12. Inner wall of inclined section; 13. Inner wall of straight section; 14. Telescopic shaft; 15. Detection part; 16. Sensing block; 17. Miniature cylinder; 18. Rear limit ring; 19. Return spring; 20. Sliding ring; 21. Front limit ring; 22. Hinge rod; 23. Waist-shaped hole; 24. Limit pin; 25. Detection ball; 26. Vibration spring; 27. Sliding column; 28. Rolling part; 29. ​​Extrusion block. Detailed Implementation

[0046] 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.

[0047] Please see Figures 1-12 This invention provides a technical solution: a laser-based fixture for detecting the perpendicularity of the end face of a graphite electrode post, comprising a base 1, with two roller supports fixedly connected to the top of the base 1 along its length. The two ends of each roller support extend upwards at an angle, resulting in a V-shaped outer contour. Rollers 2 are horizontally rotatably connected to the opposite faces of the roller supports via mounting bearing seats. The four rollers 2 on the two roller supports constitute a support structure for placing and supporting the graphite electrode post. The two ends of the graphite electrode post are respectively placed on the rollers 2 of the two roller supports. Due to the large size of the graphite electrode post, it typically does not rotate on its own after being placed on the rollers 2. The axial direction of the graphite electrode post is parallel to the length direction of the base 1. A fixed seat 9 is installed at one end of the base 1 along the length direction. The fixed seat 9 is composed of a horizontal plate and a vertical plate welded together. The horizontal plate of the fixed seat 9 is connected to the base 1 by screws. Its vertical plate extends vertically upward. In addition, a rotary seat 6 is rotatably connected to the vertical plate. A telescopic shaft 14 is coaxially installed on the rotary seat 6. Specifically, the end face of the rotary seat 6 is coaxially provided with a mounting hole for the telescopic shaft 14 to pass through freely. The telescopic shaft 14 and the hole wall of the mounting hole are keyed together, so that the telescopic shaft 14 can slide freely horizontally in the mounting hole. When the rotary seat 6 rotates, it can synchronously drive the telescopic shaft 14 to rotate.

[0048] Combination Figures 1 to 12 As shown, and please refer to the following: Figure 9 , Figure 10A swing arm 4 is rotatably connected to one end of the telescopic shaft 14 facing the idler roller 2. The pivot point of the swing arm 4 on the telescopic shaft 14 is perpendicular to the axial direction of the telescopic shaft 14. The swing arm 4 can swing towards the idler roller 2 on the telescopic shaft 14. A recessed sliding cavity is formed on the side wall of the swing arm 4 facing the idler roller 2. A detection part 15 is provided in the sliding cavity. The detection part 15 can slide freely up and down in the sliding cavity. Sliding pins 27 are fixed to both ends of the detection part 15. One sliding pin 27 away from the telescopic shaft 14 protrudes from the swing arm 4 and can slide freely in the direction in which the detection part 15 slides in the sliding cavity. Multiple detection balls 25 are rotatably embedded on the side wall of the detection part 15 facing the idler roller 2. Multiple detection balls 25 are equally spaced along the direction in which the detection part 15 slides in the sliding cavity, and at least a portion of the detection balls 25 protrudes out of the outside of the sliding cavity. The axial direction of the telescopic shaft 14 is coaxial with the graphite electrode column placed on the roller 2. In addition, each of the two side walls of the detection part 15 perpendicular to its sliding direction in the sliding cavity is fixed with a limiting pin 24. The axis of the limiting pin 24 is perpendicular to the sliding direction of the detection part 15 in the sliding cavity. The two side walls of the swing arm 4 are respectively provided with waist-shaped holes 23 for the two limiting pins 24 to pass freely. When the limiting pins 24 slide in the waist-shaped holes 23, they will circumferentially limit the detection part 15 to prevent the detection part 15 from rotating around the sliding column 27.

[0049] Combination Figures 3 to 12 As shown, and please refer to the following: Figures 8 to 10 A fixed ring is fixedly sleeved around the periphery of the telescopic shaft 14. A sensor bracket is fixedly attached to the wall of the fixed ring. A laser displacement sensor 5 is installed on the sensor bracket. The laser displacement sensor 5 is located between the rotary seat 6 and the swing arm 4. A sensing block 16 is provided on the side wall of the swing arm 4 facing the laser displacement sensor 5. The sensing block 16 is used to cooperate with the laser displacement sensor 5. When the swing arm 4 rotates along its rotation fulcrum on the telescopic shaft 14, the lateral distance between the sensing block 16 and the laser displacement sensor 5 will change, thereby causing the laser displacement sensor 5 to generate a displacement signal. After the displacement signal is transmitted to the external control cabinet, the external control cabinet will generate a signal and prompt the swing arm 4 to swing. By setting a threshold for the displacement stroke in the equipment of the control cabinet, the control cabinet can generate an alarm signal when the displacement of the sensing block 16 exceeds the threshold to prompt the staff.

[0050] In addition, such as Figure 9As shown, a sliding ring 20 is slidably fitted on the periphery of the telescopic shaft 14. The sliding ring 20 can slide freely on the periphery of the telescopic shaft 14. A hinge rod 22 is hinged to the side wall of the swing arm 4 facing the laser displacement sensor 5. The end of the hinge rod 22 away from the swing arm 4 is hinged to the periphery of the sliding ring 20, so that when the swing arm 4 rotates, the sliding ring 20 can be driven to slide on the periphery of the telescopic shaft 14 through the hinge rod 22. In addition, in order to ensure that the length direction of the swing arm 4 (or the sliding direction of the detection part 15 in the sliding cavity) is perpendicular to the axial direction of the telescopic shaft 14 in the initial state, in this embodiment, a front limiting ring 21 and a rear limiting ring 18 are fixedly fitted on the periphery of the telescopic shaft 14. The front limiting ring 21 is located between the swing arm 4 and the sliding ring 20, and the rear limiting ring 18 is located between the sliding ring 20 and the rotating shaft 14. Between the seats 6, that is, the sliding ring 20 can slide on the periphery of the telescopic shaft 14 between the front limit retaining ring 21 and the rear limit retaining ring 18. In addition, a return spring 19 is wrapped around the periphery of the telescopic shaft 14. The return spring 19 is located between the sliding ring 20 and the rear limit retaining ring 18, and the return spring 19 is in a compressed state. The two ends of the return spring 19 elastically abut against the sliding ring 20 and the rear limit retaining ring 18 respectively. In this way, the return spring 19 generates an elastic abutting force on the sliding ring 20 in the initial state, so as to drive the sliding ring 20 to slide towards the front limit retaining ring 21 until the end face of the sliding ring 20 abuts against the end face of the front limit retaining ring 21. At this time, the swing arm 4 will be perpendicular to the telescopic shaft 14, that is, the length direction of the swing arm 4 (or the sliding direction of the detection part 15 in the sliding cavity) is perpendicular to the axis of the telescopic shaft 14.

[0051] Combination Figures 3 to 12 As shown, and please refer to the following: Figure 9Each of the two sliding columns 27 has a vibration spring 26 wound around its periphery. The vibration springs 26 are located inside the sliding cavity, and their two ends elastically abut against the inner wall of the sliding cavity and the surface of the detection part 15, respectively, in the direction of their elastic force. In the initial state, the two vibration springs 26 exert a squeezing effect on the detection part 15 from both the top and bottom, allowing the detection part 15 to remain stationary inside the sliding cavity. A rolling part 28 is rotatably fitted at the free end of one of the sliding columns 27 away from the telescopic shaft 14. The rolling part 28 rotates freely at the end of the sliding column 27. A stand is mounted on the base 1, and a [missing information - likely a component or material] is welded to the upper end of the stand. The drive ring 3 has multiple notched clearance grooves in its annular wall. Specifically, there are four clearance grooves arranged in an array along the axial direction of the drive ring 3. Each clearance groove includes a straight inner wall 13 and an inclined inner wall 12. The straight inner wall 13 and the inclined inner wall 12 are connected end to end. When the telescopic shaft 14 moves toward the drive ring 3, the rolling part 28 will enter one of the clearance grooves. Then, through the rotation of the rotary seat 6, the rolling part 28 can contact the inclined inner wall 12 of the clearance groove and roll on the inclined inner wall 12, and then roll from the inclined inner wall 12 to... On the inner wall of the annular hole of the drive ring 3, the inner wall of the annular hole exerts a squeezing force on the rolling part 28, causing the rolling part 28 to move the driving sliding column 27 toward the inside of the swing arm 4, thereby driving the detection part 15 to move toward the telescopic shaft 14 in the sliding cavity. This causes the detection part 15 to compress a vibration spring 26 adjacent to the telescopic shaft 14 and accumulate elastic potential energy. When the rolling part 28 rolls from the inner wall of the annular hole of the drive ring 3 to the next clearance groove, when the rolling part 28 rolls to the inner wall of the straight section 13, the elastic potential energy accumulated by the previously compressed vibration spring 26 is released. The detection unit 15 moves rapidly away from the telescopic shaft 14. Since the detection unit 15 has a certain weight, it compresses another vibration spring 26 as it moves rapidly upward. This causes the vibration spring 26 away from the telescopic shaft 14 to accumulate elastic potential energy. After the detection unit 15 moves upward into position, the elastic potential energy accumulated by the vibration spring 26 away from the telescopic shaft 14 is released, which in turn drives the detection unit 15 to move rapidly downward. This process is repeated, causing the detection unit 15 to vibrate up and down, and the amplitude of this vibration has a certain degree of randomness.

[0052] like Figure 11As shown, a miniature cylinder 17 is installed on the side wall of the swing arm 4 facing the laser displacement sensor 5. The cylinder rod of the miniature cylinder 17 passes through the sliding cavity and can slide freely. A pressing block 29 is fixed to one end of the cylinder rod of the miniature cylinder 17 that passes through the sliding cavity. When the cylinder rod of the miniature cylinder 17 extends, it will cause the pressing block 29 to move towards the detection part 15, and the pressing block 29 will be able to press the detection part 15, so that the detection part 15 cannot slide in the sliding cavity. Preferably, the material of the pressing block 29 can be rubber, so that when the pressing block 29 contacts the detection part 15, the relative sliding resistance between the detection part 15 and the pressing block 29 is large. This avoids rapidly stopping the detection unit 15. The micro cylinder 17 drives the extrusion block 29 to move towards the detection unit 15, causing the extrusion block 29 to press the detection unit 15. This allows the detection unit 15, which is in a reciprocating vibration state, to stop quickly, thereby adjusting the position of the detection ball 25 on the end face of the graphite electrode post. Since the extrusion block 29 presses the detection unit 15, which is in a reciprocating vibration state, the position of the extrusion block 29 is random. Therefore, when the detection unit 15 is pressed into a stationary state after reciprocating vibration, the distance between the position of the detection ball 25 on the end face of the graphite electrode post and the axis of the graphite electrode post is randomly distributed.

[0053] Combination Figures 1 to 8 As shown, and please refer to the following: Figure 6 A drive cylinder 8 is horizontally mounted on the upright of the fixed base 9. A rack 10 is fixedly connected to the cylinder rod of the drive cylinder 8. The rack 10 is horizontally slidably connected to the surface of the upright of the fixed base 9 via a mounting rail and a slider. A gear 11 is fixedly sleeved at the end of the rotary base 6 away from the laser displacement sensor 5. The gear 11 meshes with the rack 10. When the cylinder rod of the drive cylinder 8 extends or retracts, it drives the rack 10 to move horizontally. During this horizontal movement, the meshing of the rack 10 and gear 11 drives the gear 11 to rotate. The rotation of the gear 11 drives the rotary base 6 to rotate, which in turn drives the telescopic shaft 14 to rotate. When the telescopic shaft 14 rotates, the laser displacement sensor 5 and the swing arm 4 rotate synchronously. Additionally, as... Figure 6As shown, a cylinder bracket is installed at the end of the rotary seat 6 away from the laser displacement sensor 5. A push cylinder 7 is installed on the cylinder bracket. The cylinder rod of the push cylinder 7 passes into the inner cavity of the rotary seat 6 and is fixedly connected to the end of the telescopic shaft 14 away from the swing arm 4. This allows the cylinder rod of the push cylinder 7 to extend or retract, synchronously driving the telescopic shaft 14 to move horizontally on the rotary seat 6, and driving the swing arm 4 to move towards the end face of the graphite electrode column placed on the roller 2, until the detection ball 25 on the detection unit 15 abuts against the end face of the graphite electrode column. Then, when the telescopic shaft 14 rotates with the rotary seat 6, the detection ball 25 on the detection unit 15 can roll on the end face of the graphite electrode column. The rolling trajectories of each detection ball 25 on the end face of the graphite electrode column do not coincide. If the end face of the graphite electrode column is inclined, the detection ball 25 is subjected to inconsistent squeezing force from the end face of the graphite electrode column, which will cause the swing arm 4 to swing.

[0054] Working principle of the invention:

[0055] The graphite electrode post is placed on the four rollers 2 of two roller supports using hoisting equipment or a forklift. The four rollers 2 support the graphite electrode post, with the end face to be tested facing the fixed base 9. The push cylinder 7 is activated, extending its cylinder rod, which in turn moves the drive telescopic shaft 14 toward the end face of the graphite electrode post until the swing arm 4 moves to the inside of the annular hole of the drive ring 3, and the rolling part 28 on the sliding column 27 enters one of the clearance slots. The external control cabinet controls the drive cylinder 8 to activate, extending its cylinder rod, which drives the rack 10 to move. When the rack 10 moves, it drives the gear 11 to rotate through the meshing transmission between the rack 10 and the gear 11. When gear 11 rotates, it will synchronously drive rotary seat 6 to rotate. When rotary seat 6 rotates, since telescopic shaft 14 and mounting hole on rotary seat 6 are keyed, rotary seat 6 can synchronously drive telescopic shaft 14 to rotate. When telescopic shaft 14 rotates, rolling part 28 will contact the inclined inner wall 12 of clearance groove and then roll on the inclined inner wall 12. During the rolling process, the inclined inner wall 12 will exert a squeezing force on rolling part 28, causing rolling part 28 to drive sliding column 27 to move inward towards the inside of swing arm 4, causing detection part 15 to move in the sliding cavity towards the direction adjacent to telescopic shaft 14 and compress a vibration spring 26 adjacent to telescopic shaft 14. Vibration spring 26 will accumulate elastic potential energy.

[0056] As the rotary seat 6 continues to rotate, the rolling part 28 rolls from the inner wall 12 of the inclined section to the inner wall of the annular hole of the drive ring 3. At this time, the vibration spring 26 is compressed to its maximum state. The rotary seat 6 continues to rotate, causing the rolling part 28 to roll from the inner wall of the annular hole of the drive ring 3 to the next clearance groove. When the rolling part 28 rolls to the inner wall 13 of the straight section, the elastic potential energy stored in the vibration spring 26 is released, thereby driving the detection part 15 to move rapidly away from the telescopic shaft 14. When the detection part 15 moves rapidly, it will compress another vibration spring 26, causing the vibration spring 26 to store elastic potential energy. After the detection part 15 moves rapidly into position, the elastic potential energy stored in the vibration spring 26 away from the telescopic shaft 14 is released, thereby driving the detection part 15 to move rapidly in the opposite direction. In this way, the detection part 1... 5. It can move up and down rapidly in a short time, forming a state of up and down vibration. The external control cabinet then controls the micro cylinder 17 to move. The cylinder rod of the micro cylinder 17 extends, which causes the extrusion block 29 to move towards the detection part 15 and extrude the surface of the detection part 15, thereby causing the detection part 15 to stop quickly. Since the extrusion area of ​​the extrusion block 29 on the detection part 15 is randomly distributed when the detection part 15 is vibrating up and down, when the detection part 15 stops moving up and down, the diameter of the circular trajectory formed by the position of the detection ball 25 on the end face of the graphite electrode column is randomly distributed. This can avoid the detection error caused by the fixed rolling trajectory of the detection ball 25 on the end face of the graphite electrode column.

[0057] Subsequently, the control cabinet activates the laser displacement sensor 5 and detects the displacement of the sensing block 16 through the laser displacement sensor 5, thereby determining the swing amplitude of the swing arm 4, and determining whether the end face perpendicularity of the graphite electrode column has deviated according to the preset threshold.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for detecting the perpendicularity of the end face of a graphite electrode post based on laser measurement, characterized in that, include: Base (1), support device, swing detection device and drive device; The support device is located on the base (1) and is used to support the graphite electrode column; The swing detection device includes a telescopic shaft (14), a swing arm (4), a detection unit (15), and a laser displacement sensor (5). The telescopic shaft (14) is horizontally and slidably disposed at one end of the base (1), and the swing arm (4) is rotatably connected to the end of the telescopic shaft (14) facing the graphite electrode column; The detection unit (15) is slidably disposed on the swing arm (4) in a direction perpendicular to the axial direction of the telescopic shaft (14); The laser displacement sensor (5) is mounted on the telescopic shaft (14), and the wall of the swing arm (4) is fixed with a sensing block (16) that works in conjunction with the laser displacement sensor (5). The laser displacement sensor (5) is used to detect the horizontal displacement of the sensing block (16). The driving device is used to drive the telescopic shaft (14) to move along its axial direction so that the detection part (15) abuts against the end face of the graphite electrode post.

2. The fixture for detecting the perpendicularity of the end face of a graphite electrode post based on laser measurement according to claim 1, characterized in that, The support device includes a roller bracket and a roller (2). The roller bracket is fixed to the top of the base (1). Each side of the roller bracket is rotatably connected to a roller (2). The two rollers (2) form a V-shaped support structure for placing the graphite electrode column.

3. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 1, characterized in that, It also includes a rotary seat (6) and a fixed seat (9), the fixed seat (9) being connected to the base (1), and the rotary seat (6) being rotatably connected to the fixed seat (9); The telescopic shaft (14) is keyed to the rotary seat (6), and the driving device drives the telescopic shaft (14) to move axially relative to the rotary seat (6); The fixed base (9) is also provided with a rotary power mechanism, which is used to drive the rotary base (6) to rotate, thereby driving the telescopic shaft (14) and the swing arm (4) to rotate around the axis of the telescopic shaft (14).

4. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 3, characterized in that, The rotary power mechanism includes a drive cylinder (8), a rack (10), and a gear (11). The gear (11) is coaxially fixed on the rotary seat (6), the rack (10) meshes with the gear (11), the drive cylinder (8) is mounted on the fixed seat (9), and the cylinder rod of the drive cylinder (8) is connected to the rack (10).

5. The fixture for detecting the perpendicularity of the end face of a graphite electrode post based on laser measurement according to claim 1, characterized in that... The detection part (15) is fixedly connected to each end of a sliding column (27), the sliding column (27) slides through the swing arm (4), the swing arm (4) has a sliding cavity, and the detection part (15) is located in the sliding cavity; Each of the two sliding columns (27) is surrounded by a vibration spring (26), and the two vibration springs (26) are used to support the detection unit (15).

6. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 5, characterized in that, The sliding column (27) has a rolling part (28) at one end away from the detection part (15); The base (1) is provided with a drive ring (3), and the inner wall of the drive ring (3) is provided with multiple clearance grooves; The clearance groove includes a straight inner wall (13) and an inclined inner wall (12) that are connected. When the telescopic shaft (14) rotates and drives the rolling part (28) to pass through the clearance groove, the inclined inner wall (12) squeezes the rolling part (28), causing the detection part (15) to compress the vibration spring (26).

7. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 1, characterized in that, The swing detection device also includes a miniature cylinder (17) and a squeezing block (29). The miniature cylinder (17) is mounted on the swing arm (4). The cylinder rod of the miniature cylinder (17) extends into the swing arm (4) and is connected to the squeezing block (29). The squeezing block (29) is used to squeeze the detection part (15) to limit its sliding.

8. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 7, characterized in that, The extrusion block (29) is made of rubber.

9. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 1, characterized in that, A sliding ring (20) is slidably connected to the telescopic shaft (14), and the swing arm (4) is connected to the sliding ring (20) through a hinge rod (22); The telescopic shaft (14) is also provided with a return spring (19) and a front limit retaining ring (21). The return spring (19) is located between the sliding ring (20) and the front limit retaining ring (21) and is used to provide the sliding ring (20) with a spring force toward the front limit retaining ring (21) so that the swing arm (4) is kept in an initial state perpendicular to the telescopic shaft (14).

10. The laser-based graphite electrode post end face perpendicularity detection fixture according to claim 1, characterized in that, The detection section (15) is rotatably embedded with a plurality of detection balls (25) on one side wall facing the graphite electrode post, and the detection balls (25) protrude from the surface of the detection section (15).

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