An inner electrode wear depth measuring device

Abstract

The present invention relates to the field of internal electrode detection technology, and more specifically, the present invention provides an internal electrode wear depth measuring device for measuring the wear depth of multiple internal electrode bodies on an annular strip, wherein multiple internal electrode bodies are arranged at intervals along the circumferential direction of the annular strip, multiple groups of the annular strips are sleeved on the periphery of a rotating seat, and the inner diameters of the multiple groups of the annular strips are increased in sequence, and the measuring device comprises a connecting mechanism, a supporting mechanism and a measuring mechanism; by setting the connecting mechanism, the supporting tube can be detachably installed at the center of the rotating seat, so that the rotation of the rotating seat can be utilized to drive multiple detection probes to measure the wear degree of multiple internal electrode bodies on a single annular strip; the existing technology for detecting the wear degree of the internal electrode has the problems of long detection time and low efficiency, and cannot measure the actual electrode wear data, and relies entirely on the operator's feeling, resulting in non-intuitive results.

Description

Technical Field

[0001] The invention relates to the technical field of inner electrode detection, and more specifically to an inner electrode wear depth measuring device. Background Art

[0002] The inner electrode exists between each layer of ceramic medium and plays the role of conducting current. In the process of measuring the wear degree of the inner electrode, the operator uses a flat small flat pick or the tip of a fingernail to touch the inner electrode to see if there is concave wear, which is easy to cause errors. However, there are 144 inner electrodes in total. Checking and confirming each electrode one by one will result in long detection time and low efficiency, affecting production. In addition, this measurement method cannot measure the actual electrode wear data, but depends entirely on the operator's feeling, and the results are not intuitive. Summary of the invention

[0003] The object of the present invention is to provide a device for measuring the wear depth of an inner electrode to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: an inner electrode wear depth measuring device, used for measuring the wear depth of multiple inner electrode bodies on an annular strip, wherein multiple inner electrode bodies are arranged at intervals along the circumferential direction of the annular strip, and the annular strip is provided with multiple groups, and the multiple groups of annular strips are all sleeved on the periphery of a rotating seat, and the inner diameters of the multiple groups of annular strips are increased in sequence, and the annular strips are installed on a base, and the rotating seat is rotatably connected to the base, and the measuring device includes a connecting mechanism, a supporting mechanism and a measuring mechanism;

[0005] The measuring mechanism is installed on the supporting mechanism, and the measuring mechanism measures the wear depth of the inner electrode body by respectively making relative friction contact with the inner electrode body and the annular strip;

[0006] The support mechanism is detachably mounted at the center of the rotating seat, and the support mechanism includes a support frame, a connecting rod, a lifting seat, a support tube, a protective seat and a driving member. One end of the support frame is hinged to the lifting seat, and a measuring mechanism is installed at the other end of the support frame. The end of the support frame close to the lifting seat is also hinged to the connecting rod, and the end of the connecting rod away from the support frame is hinged to the protective seat. The protective seat is fixedly mounted on the support tube, and the protective seat is spaced apart from a side of the lifting seat close to the rotating seat. The lifting seat is sleeved on the periphery of the support tube and slidably connected to the support tube. The distance between the lifting seat and the rotating seat is adjusted by the driving member; the support tube is also detachably connected to the center of the rotating seat through the connecting mechanism;

[0007] The connection mechanism comprises a magnetic member and a connection assembly. The magnetic member is connected to the support tube via the connection assembly, and the magnetic member is also magnetically matched with the rotating seat.

[0008] A further technical solution of the present application is as follows: a first receiving groove for receiving the magnetic component is provided on the protective seat, and the first receiving groove is connected to the support tube.

[0009] A further technical solution of the present application is as follows: the connecting assembly includes a sliding rod, a pressing seat and a first spring, one end of the sliding rod is connected to the magnetic part through the connecting seat, the other end of the sliding rod passes through the protective seat and the support tube in sequence and extends to the outside of the support tube, and the end of the sliding rod located outside the support tube is connected to the pressing seat, and the side of the connecting seat away from the magnetic part is also connected to one end of the first receiving groove through the first spring, and when the first spring is in the initial elastic state, the magnetic part is received at the center of the first receiving groove.

[0010] A further technical solution of the present application is that the magnetic member includes an electromagnet, the electromagnet is magnetically matched with the rotating seat, and the second electrode sheet of the electromagnet is electrically matched with the first electrode sheet installed on the protective seat, and the first electrode sheet is electrically connected to the battery through an electric wire;

[0011] When the slide bar is in the initial position, the first spring is in the initial elastic state, the second electrode sheet is spaced apart from the first electrode sheet, and the magnetic member is received in the first receiving groove;

[0012] When the slide bar moves to the connection position in the direction close to the rotating seat, the first spring is in a stretched state, the second electrode sheet contacts the first electrode sheet and is energized, and the magnetic member is magnetically connected to the rotating seat.

[0013] A further technical solution of the present application is as follows: a protective assembly for closing the first receiving slot is further provided on the side of the protective seat away from the lifting seat, the protective assembly includes a protective plate and a telescopic rod, a plurality of the protective plates are provided, and the plurality of the protective plates constitute a closing member for closing the first receiving slot, each of the protective plates is respectively slidably connected to the protective seat, and the protective plate reciprocates between the end of the protective seat and the center of the protective seat, a slope is further provided on the side of the protective plate close to the magnetic member, the slope is inclined in a direction close to the center of the protective seat, and the slopes on the plurality of protective plates respectively contact the ends of the magnetic member; a telescopic rod is further hinged at one end of each of the protective plates away from the magnetic member, and the end of the telescopic rod away from the protective plate is also hinged to the end of the connecting seat;

[0014] When the slide bar is in the initial position, the magnetic member is received in the first receiving groove, and the plurality of protection plates form a closing member for closing the first receiving groove;

[0015] When the sliding rod moves toward the direction close to the rotating seat to the connection position, the magnetic part moves toward the rotating seat until the magnetic part and the rotating seat are magnetically connected; the protective plate moves away from the center of the first receiving groove under the support of the magnetic part and the push of the telescopic rod, and exposes a make way channel for the magnetic part.

[0016] A further technical solution of the present application is: an auxiliary connection component is also provided on the protective plate, and the auxiliary connection component is used to move the protective plate away from the center of the first receiving groove to expose a clearance channel for making way for the magnetic part, and the auxiliary protective plate is connected to the rotating seat.

[0017] The present application has a further technical solution: the auxiliary connection component includes a button, a slider, a suction cup, a linkage rod, a connecting rod and a second spring, the button is located in a second receiving groove at an end of the protective plate away from the slope, the end of the button close to the slope is rotatably connected to the second receiving groove through a rotating shaft, the side of the button away from the slope is connected to the second receiving groove through a second spring, the end of the button away from the slope is also hinged to the end of the linkage rod, the linkage rod is slidably connected to a sliding pin in the sliding groove at the end away from the button, the sliding pin is installed at one end of the slider, the end of the slider away from the linkage rod is connected to the end of the suction cup, and the suction cup is arranged opposite to the rotating seat;

[0018] When the slide bar is in the initial position, the magnetic member is received in the first receiving groove, the plurality of protective plates form a closing member for closing the first receiving groove, the button is received in the second receiving groove under the action of the protective seat, and the suction cup is received in the second receiving groove under the action of the linkage rod;

[0019] When the sliding rod moves to the connection position in the direction close to the rotating seat, the magnetic part moves in the direction of the rotating seat until the magnetic part is magnetically connected to the rotating seat; the protective plate moves away from the center of the first storage groove under the support of the magnetic part and the push of the telescopic rod until the button is located outside the protective seat, and the button swings in the direction away from the protective plate under the elastic force of the second spring, and the sliding block moves in the direction close to the rotating seat until the suction cup is adsorbed on the rotating seat.

[0020] A further technical solution of the present application is as follows: the measuring mechanism comprises a detection probe, which is mounted at the end of the support frame away from the lifting seat, and the detection probe measures the wear depth of the inner electrode body by respectively making relative frictional contact with the inner electrode body and the annular strip.

[0021] A further technical solution of the present application is as follows: the driving member includes a hydraulic cylinder, a fixed end of the hydraulic cylinder is mounted on a support plate, a telescopic end of the hydraulic cylinder is connected to a lifting seat, the support plate is located on a side of the lifting seat away from the protective seat, and the support plate is fixedly connected to the support tube.

[0022] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0023] 1. The present invention can detachably mount the support tube at the center of the rotating seat by setting a connecting mechanism, so that the rotation of the rotating seat can be used to drive multiple detection probes to measure the wear degree of multiple inner electrode bodies on a single annular strip; it solves the problem that the existing method of detecting the wear degree of the inner electrode has a long detection time and low efficiency, and cannot measure the actual electrode wear data, and relies entirely on the operator's feeling, resulting in non-intuitive results.

[0024] 2. The present invention provides a support mechanism, and when it is necessary to measure multiple inner electrode bodies on annular bars with different outer diameters, the driving member drives the lifting seat to move toward the rotating seat, so that the detection probe can be driven from the annular bar close to the rotating seat to the annular bar far from the rotating seat under the support frame and the connecting rod. In this way, the detection distance can be switched, and the detection efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of an inner electrode wear depth measuring device provided by the present invention;

[0026] Figure 2 A top view of an inner electrode wear depth measuring device provided by the present invention;

[0027] Figure 3 A side cross-sectional view of an inner electrode wear depth measuring device provided by the present invention when a plurality of protective plates 21 form a closed member;

[0028] Figure 4 A partial side cross-sectional view of an inner electrode wear depth measuring device provided by the present invention when a plurality of protective plates 21 expose the clearance channel;

[0029] Figure 5 for Figure 4 A partial enlarged schematic diagram in the middle.

[0030] Explanation of the symbols in the schematic diagram:

[0031] 1. Base; 2. Inner electrode body; 3. Ring bar; 4. Detection probe; 5. Support frame; 6. Micrometer; 7. Connecting rod; 8. Lifting seat; 9. Pressing seat; 10. Sliding rod; 11. Hydraulic cylinder; 12. Guide rod; 13. Support tube; 14. Protective seat; 15. Rotating seat; 16. Support plate; 17. First spring; 18. Connecting seat; 19. Telescopic rod; 20. Magnetic part; 21. Protective plate; 22. Slope; 24. First electrode sheet; 25. Second electrode sheet; 26. Battery; 27. Button; 28. Second spring; 29. ​​Linkage rod; 30. Connecting rod; 31. Slide groove; 32. Second receiving groove; 33. Guide groove; 34. Sliding block; 35. Suction cup; 36. First receiving groove; 37. Wire; 38. Rotating shaft. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is further described below in combination with the embodiments.

[0033] See also Figure 1 - Figure 4 In one embodiment of the present application, an inner electrode wear depth measuring device is used to measure the wear depth of multiple inner electrode bodies 2 on an annular strip 3, wherein multiple inner electrode bodies 2 are provided at intervals along the circumferential direction of the annular strip 3, and the annular strip 3 is provided with multiple groups, and the multiple groups of the annular strips 3 are all sleeved on the periphery of the rotating seat 15, and the inner diameters of the multiple groups of the annular strips 3 are increased in sequence, and the annular strips 3 are installed on the base 1, and the rotating seat 15 is rotatably connected to the base 1, and the measuring device includes a connecting mechanism, a supporting mechanism and a measuring mechanism;

[0034] The measuring mechanism is installed on the supporting mechanism, and the measuring mechanism measures the wear depth of the inner electrode body 2 by respectively making relative friction contact with the inner electrode body 2 and the annular strip 3;

[0035] The support mechanism is detachably mounted at the center of the rotating seat 15, and the support mechanism includes a support frame 5, a connecting rod 7, a lifting seat 8, a support tube 13, a protective seat 14 and a driving member. One end of the support frame 5 is hinged to the lifting seat 8, and a measuring mechanism is installed on the other end of the support frame 5. The end of the support frame 5 close to the lifting seat 8 is also hinged to the connecting rod 7, and the end of the connecting rod 7 away from the support frame 5 is hinged to the protective seat 14. The protective seat 14 is fixedly mounted on the support tube 13, and the protective seat 14 is spaced apart from the side of the lifting seat 8 close to the rotating seat 15. The lifting seat 8 is sleeved on the periphery of the support tube 13 and is slidably connected to the support tube 13. The distance between the lifting seat 8 and the rotating seat 15 is adjusted by the driving member; the support tube 13 is also detachably connected to the center of the rotating seat 15 through the connecting mechanism; the lifting seat 8 is also slidably connected to the guide rod 12 installed on the support tube 13.

[0036] The connection mechanism includes a magnetic member 20 and a connection assembly. The magnetic member 20 is connected to the support tube 13 via the connection assembly. The magnetic member 20 also magnetically cooperates with the rotating seat 15 .

[0037] In one case of this embodiment, the measuring mechanism includes a detection probe 4, which is mounted on the end of the support frame 5 away from the lifting seat 8, and the detection probe 4 measures the wear depth of the inner electrode body 2 by respectively contacting with the inner electrode body 2 and the annular strip 3. The data detected by the detection probe 4 is displayed by a micrometer 6, which is mounted on the support frame 5.

[0038] In this embodiment, the driving member includes a hydraulic cylinder 11, the fixed end of the hydraulic cylinder 11 is installed on a support plate 16, the telescopic end of the hydraulic cylinder 11 is connected to the lifting seat 8, the support plate 16 is located on the side of the lifting seat 8 away from the protective seat 14, and the support plate 16 is fixedly connected to the support tube 13.

[0039] As a preferred embodiment of the present application, a first receiving groove 36 for receiving the magnetic component 20 is formed on the protective seat 14 , and the first receiving groove 36 is connected to the support tube 13 .

[0040] As a preferred embodiment of the present application, the connecting assembly includes a sliding rod 10, a pressing seat 9 and a first spring 17. One end of the sliding rod 10 is connected to the magnetic part 20 through a connecting seat 18. The other end of the sliding rod 10 passes through the protective seat 14 and the support tube 13 in sequence and extends to the outside of the support tube 13. The end of the sliding rod 10 located outside the support tube 13 is connected to the pressing seat 9. The side of the connecting seat 18 away from the magnetic part 20 is also connected to one end of the first receiving groove 36 through the first spring 17. When the first spring 17 is in the initial elastic state, the magnetic part 20 is received at the center of the first receiving groove 36.

[0041] In order to play the role of locating the center of the circle, multiple support frames 5 can be arranged at intervals along the circumferential direction of the support tube 13. Then, in actual application, the detection probes 4 on the multiple support frames 5 are first contacted with the inner electrode body 2 on the same annular strip 3 respectively, and then the support tube 13 is located at the center of the rotating seat 15, and then the slide bar 10 is driven to move in the direction close to the rotating seat 15, so that the magnetic member 20 contacts the rotating seat 15. The magnetic connection between the magnetic member 20 and the rotating seat 15 ensures the stability of the support tube 13; then the machine motor drives the rotating seat 15 to rotate, so that the support tube 13 rotates, thereby driving the detection probes 4 to contact the inner electrode body 2 and the annular strip 3 in turn, so that the wear degree of the inner electrode body 2 can be detected through the height difference between the plane of the inner electrode body 2 and the plane of the annular strip 3. When it is necessary to measure multiple inner electrode bodies 2 on annular bars 3 with different outer diameters, the lifting seat 8 is driven by the driving member to move toward the direction close to the rotating seat 15, so that the detection probe 4 can be driven to move from the annular bar 3 close to the rotating seat 15 to the annular bar 3 far from the rotating seat 15 under the condition of the support frame 5 and the connecting rod 7. Thus, the function of switching the detection distance can be realized.

[0042] When the measuring device needs to be disassembled, the magnetic member 20 is removed from the rotating seat 15 , and the magnetic member 20 is received in the first receiving groove 36 under the elastic action of the first spring 17 .

[0043] It is necessary to explain that the machine motor driving the rotating base 15 to rotate is a prior art.

[0044] See also Figure 3 and Figure 4 As a preferred embodiment of the present application, the magnetic member 20 includes an electromagnet, the electromagnet is magnetically matched with the rotating seat 15, and the second electrode sheet 25 of the electromagnet is electrically matched with the first electrode sheet 24 installed on the protective seat 14, and the first electrode sheet 24 is electrically connected to the battery 26 through the wire 37;

[0045] When the slide bar 10 is in the initial position, the first spring 17 is in the initial elastic state, the second electrode sheet 25 is spaced apart from the first electrode sheet 24, and the magnetic member 20 is received in the first receiving groove 36. At this time, the magnetic member 20 is in the demagnetized state;

[0046] When the slide rod 10 moves to the connection position in the direction close to the rotating seat 15, the first spring 17 is in a stretched state, the second electrode sheet 25 contacts the first electrode sheet 24 and is energized, the magnetic member 20 contacts the rotating seat 15, and the magnetic member 20 is magnetically connected to the rotating seat 15, thereby completing the detachable installation of the support tube 13 on the rotating seat 15.

[0047] See also Figure 3 and Figure 4 As a preferred embodiment of the present application, a protective assembly for closing the first receiving groove 36 is further provided on the side of the protective seat 14 away from the lifting seat 8, and the protective assembly includes a protective plate 21 and a telescopic rod 19. There are multiple protective plates 21, and multiple protective plates 21 form a closing member for closing the first receiving groove 36. Each of the protective plates 21 is slidably connected to the protective seat 14, and the protective plate 21 reciprocates between the end of the protective seat 14 and the center of the protective seat 14. A slope 22 is further provided on the side of the protective plate 21 close to the magnetic member 20. The slope 22 is inclined in a direction close to the center of the protective seat 14, and the slopes 22 on the multiple protective plates 21 respectively contact the ends of the magnetic member 20; in order to facilitate the reset of the protective plate 21 when the magnetic member 20 moves in a direction away from the rotating seat 15, a telescopic rod 19 is further hinged at one end of each protective plate 21 away from the magnetic member 20, and the end of the telescopic rod 19 away from the protective plate 21 is also hinged to the end of the connecting seat 18;

[0048] When the slide bar 10 is in the initial position, the magnetic member 20 is received in the first receiving groove 36, and the plurality of protective plates 21, under the action of the telescopic rod 19, form a closing member for closing the first receiving groove 36, thereby protecting the magnetic member 20;

[0049] When the sliding rod 10 moves to the connection position in the direction close to the rotating seat 15, the magnetic member 20 moves in the direction of the rotating seat 15 until the magnetic member 20 is magnetically connected to the rotating seat 15; the protective plate 21 moves away from the center of the first receiving groove 36 under the support of the magnetic member 20 and the push of the telescopic rod 19, and exposes a make way channel for the magnetic member 20, so that the magnetic member 20 can slide out of the first receiving groove 36 and contact the rotating seat 15.

[0050] See also Figure 4 and Figure 5 As a preferred embodiment of the present application, an auxiliary connecting component is also provided on the protective plate 21, and the auxiliary connecting component is used to move the protective plate 21 away from the center of the first receiving groove 36 to expose a make way channel for the magnetic member 20, and the auxiliary protective plate 21 is connected to the rotating seat 15.

[0051] In one case of the present embodiment, the auxiliary connection assembly includes a button 27, a slider 34, a suction cup 35, a linkage rod 29, a connecting rod 30 and a second spring 28. The button 27 is located in a second receiving groove 32 at an end of the protective plate 21 away from the slope 22. The end of the button 27 close to the slope 22 is rotatably connected to the second receiving groove 32 through a rotating shaft 38. The side of the button 27 away from the end of the slope 22 is connected to the second receiving groove 32 through a second spring 28. The end of the button 27 away from the slope 22 is also hinged to the end of the linkage rod 29. A sliding pin is also slidably connected in the sliding groove 31 at the end of the linkage rod 29 away from the button 27. The sliding pin is installed at one end of the slider 34. The end of the slider 34 away from the linkage rod 29 is connected to the end of the suction cup 35. The suction cup 35 is arranged opposite to the rotating seat 15.

[0052] When the slide bar 10 is in the initial position, the magnetic member 20 is received in the first receiving groove 36, the plurality of protective plates 21 form a closing member for closing the first receiving groove 36, the button 27 is received in the second receiving groove 32 under the action of the protective seat 14, and the suction cup 35 is received in the second receiving groove 32 under the action of the linkage rod 29;

[0053] When the slide bar 10 moves to the connection position in the direction close to the rotating seat 15, the magnetic member 20 moves in the direction of the rotating seat 15 until the magnetic member 20 is magnetically connected with the rotating seat 15; the protective plate 21 moves away from the center of the first receiving groove 36 under the support of the magnetic member 20 and the push of the telescopic rod 19 until the button 27 is located outside the protective seat 14, so that the button 27 can swing in the direction away from the protective plate 21 under the elastic force of the second spring 28, and the button 27 drives the linkage rod 29 along the Figure 5 The slider 34 swings clockwise in the direction shown, so that the slider 34 moves toward the rotating seat 15 until the suction cup 35 is adsorbed on the rotating seat 15 , thereby achieving the function of stably installing the auxiliary support tube 13 on the rotating seat 15 .

[0054] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0055] In addition, it should be understood that although the present invention is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the present invention is only for the sake of clarity. Those skilled in the art should regard the present invention as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An inner electrode wear depth measuring device, used for measuring the wear depth of multiple inner electrode bodies (2) on an annular strip (3), wherein multiple inner electrode bodies (2) are arranged at intervals along the circumferential direction of the annular strip (3), and the annular strip (3) is provided in multiple groups, and the multiple groups of the annular strips (3) are all sleeved on the outer periphery of a rotating seat (15), and the inner diameters of the multiple groups of the annular strips (3) are increased in sequence, and the annular strips (3) are mounted on a base (1), and the rotating seat (15) is rotatably connected to the base (1), characterized in that: The measuring device comprises a connecting mechanism, a supporting mechanism and a measuring mechanism; The measuring mechanism is mounted on the supporting mechanism, and the measuring mechanism measures the wear depth of the inner electrode body (2) by respectively being in relative frictional contact with the inner electrode body (2) and the annular strip (3); The support mechanism is detachably mounted at the center of the rotating seat (15), and comprises a support frame (5), a connecting rod (7), a lifting seat (8), a support tube (13), a protective seat (14) and a driving member. One end of the support frame (5) is hinged to the lifting seat (8), and a measuring mechanism is installed at the other end of the support frame (5). The end of the support frame (5) close to the lifting seat (8) is also hinged to the connecting rod (7), and the end of the connecting rod (7) away from the support frame (5) is hinged to the protective seat (14). The protective seat (14) is fixedly mounted on the support tube (13), and the protective seat (14) is spaced from a side of the lifting seat (8) close to the rotating seat (15). The lifting seat (8) is sleeved on the outer periphery of the support tube (13) and is slidably connected to the support tube (13). The distance between the lifting seat (8) and the rotating seat (15) is adjusted by the driving member; the support tube (13) is also detachably connected to the center of the rotating seat (15) through the connecting mechanism; The connection mechanism comprises a magnetic member (20) and a connection assembly. The magnetic member (20) is connected to the support tube (13) via the connection assembly. The magnetic member (20) also magnetically cooperates with the rotating seat (15).

2. The inner electrode wear depth measuring device according to claim 1, characterized in that: The protection seat (14) is provided with a first receiving groove (36) for receiving the magnetic component (20), and the first receiving groove (36) is connected to the support tube (13).

3. The inner electrode wear depth measuring device according to claim 2, characterized in that: The connecting assembly comprises a sliding rod (10), a pressing seat (9) and a first spring (17); one end of the sliding rod (10) is connected to the magnetic member (20) via a connecting seat (18); the other end of the sliding rod (10) passes through a protective seat (14) and a support tube (13) in sequence and then extends to the outside of the support tube (13); and the end of the sliding rod (10) located outside the support tube (13) is connected to the pressing seat (9); a side of the connecting seat (18) away from the magnetic member (20) is also connected to one end of the first receiving groove (36) via the first spring (17); when the first spring (17) is in an initial elastic state, the magnetic member (20) is received at the center of the first receiving groove (36).

4. The inner electrode wear depth measuring device according to claim 3, characterized in that: The magnetic member (20) comprises an electromagnet, the electromagnet is magnetically matched with the rotating seat (15), and the second electrode sheet (25) of the electromagnet is electrically matched with the first electrode sheet (24) installed on the protective seat (14), and the first electrode sheet (24) is electrically connected to the battery (26) through an electric wire (37); When the slide bar (10) is in an initial position, the first spring (17) is in an initial elastic state, the second electrode sheet (25) is spaced apart from the first electrode sheet (24), and the magnetic member (20) is received in the first receiving groove (36); When the sliding rod (10) moves to a connection position in a direction close to the rotating seat (15), the first spring (17) is in a stretched state, the second electrode sheet (25) contacts the first electrode sheet (24) and is energized, and the magnetic member (20) is magnetically connected to the rotating seat (15).

5. An inner electrode wear depth measuring device according to any one of claims 3-4, characterized in that: A protective assembly for closing the first receiving groove (36) is also provided on the side of the protective seat (14) away from the lifting seat (8), and the protective assembly includes a protective plate (21) and a telescopic rod (19). A plurality of protective plates (21) are provided, and the plurality of protective plates (21) form a closing member for closing the first receiving groove (36). Each of the protective plates (21) is slidably connected to the protective seat (14), and the protective plates (21) are slidably connected at the ends of the protective seat (14) and at the middle of the protective seat (14). The protective plate (21) is provided with a slope (22) on one side close to the magnetic member (20), and the slope (22) is inclined in a direction close to the center of the protective seat (14), and the slopes (22) on the plurality of protective plates (21) respectively contact the ends of the magnetic member (20); the end of each protective plate (21) away from the magnetic member (20) is also hinged to a telescopic rod (19), and the end of the telescopic rod (19) away from the protective plate (21) is also hinged to the end of the connecting seat (18); When the slide bar (10) is in an initial position, the magnetic member (20) is received in the first receiving groove (36), and the plurality of protective plates (21) form a closing member for closing the first receiving groove (36); When the slide bar (10) moves toward the direction approaching the rotating seat (15) to the connection position, the magnetic member (20) moves toward the direction of the rotating seat (15) until the magnetic member (20) and the rotating seat (15) are magnetically connected; the protective plate (21) moves away from the center of the first receiving groove (36) under the support of the magnetic member (20) and the pushing action of the telescopic rod (19), and exposes a clearance channel for making way for the magnetic member (20).

6. The inner electrode wear depth measuring device according to claim 5, characterized in that: The protective plate (21) is also provided with an auxiliary connection assembly, which is used to move the protective plate (21) away from the center of the first receiving groove (36) to expose a clearance channel for the magnetic member (20), and the auxiliary protective plate (21) is connected to the rotating seat (15).

7. The inner electrode wear depth measuring device according to claim 6, characterized in that: The auxiliary connection assembly comprises a button (27), a slider (34), a suction cup (35), a linkage rod (29), a connecting rod (30) and a second spring (28); the button (27) is located in a second receiving groove (32) at an end of the protective plate (21) away from the slope (22); an end of the button (27) close to the slope (22) is rotatably connected to the second receiving groove (32) via a rotating shaft (38); an end of the button (27) away from the slope (22) is rotatably connected to the second receiving groove (32) via a rotating shaft (38); The side is connected to the second receiving groove (32) through a second spring (28); the end of the button (27) away from the slope (22) is also hinged to the end of the linkage rod (29); a sliding pin is slidably connected in the sliding groove (31) at the end of the linkage rod (29) away from the button (27); the sliding pin is installed at one end of the slider (34); the end of the slider (34) away from the linkage rod (29) is connected to the end of the suction cup (35); the suction cup (35) is arranged opposite to the rotating seat (15); When the slide bar (10) is in the initial position, the magnetic member (20) is received in the first receiving groove (36), the plurality of protective plates (21) form a closing member for closing the first receiving groove (36), the button (27) is received in the second receiving groove (32) under the action of the protective seat (14), and the suction cup (35) is received in the second receiving groove (32) under the action of the linkage rod (29); When the slide bar (10) moves to the connection position in the direction close to the rotating seat (15), the magnetic member (20) moves in the direction of the rotating seat (15) until the magnetic member (20) is magnetically connected to the rotating seat (15); the protective plate (21) moves away from the center of the first receiving groove (36) under the support of the magnetic member (20) and the push of the telescopic rod (19) until the button (27) is located outside the protective seat (14); the button (27) swings in the direction away from the protective plate (21) under the elastic force of the second spring (28), and the slider (34) moves in the direction close to the rotating seat (15) until the suction cup (35) is adsorbed on the rotating seat (15).

8. The inner electrode wear depth measuring device according to claim 1, characterized in that: The measuring mechanism comprises a detection probe (4), wherein the detection probe (4) is mounted at an end of a support frame (5) away from a lifting seat (8), and the detection probe (4) measures the wear depth of the inner electrode body (2) by respectively being in relative frictional contact with the inner electrode body (2) and the annular strip (3).

9. The inner electrode wear depth measuring device according to claim 1, characterized in that: The driving member comprises a hydraulic cylinder (11), a fixed end of the hydraulic cylinder (11) is mounted on a support plate (16), a telescopic end of the hydraulic cylinder (11) is connected to a lifting seat (8), the support plate (16) is located on a side of the lifting seat (8) away from the protective seat (14), and the support plate (16) is fixedly connected to the support tube (13).

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