A mutual inductor

Abstract

The present invention is applicable to the technical field of electric power facilities, and provides a transformer, including a voltage transformer body; a spiral groove is provided on the outer peripheral side of the voltage transformer body; an upper spiral baffle and a lower spiral baffle adapted to the spiral groove are fixed on the outer peripheral surface of the voltage transformer body; a spiral conveying channel is formed between the spiral groove and the upper spiral baffle and the lower spiral baffle; a magnet ball adapted to the same is rolled in the spiral conveying channel; connectors are fixedly connected at both ends of the spiral conveying channel; a launch assembly is fixed between the two connectors by fastening bolts. The magnet ball of the device rolls downward in the spiral conveying channel under the action of gravity, and the magnet ball rolls into the launch assembly, and re-enters the spiral conveying channel through the launch assembly, and the magnet ball continuously rolls around the voltage transformer body to demagnetize the voltage transformer body, effectively avoiding ferromagnetic resonance, and improving the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power facilities, and more particularly to a mutual inductor. Background Art

[0002] Voltage transformers are similar to transformers in that they are instruments used to transform voltage, but the purpose of transformers in transforming voltage is to facilitate the transmission of electrical energy; while the purpose of voltage transformers in transforming voltage is mainly to power measuring instruments and relay protection devices, to measure the voltage, power and electrical energy of the line, or to protect valuable equipment, motors and transformers in the line when a line fault occurs. Therefore, the capacity of the voltage transformer is very small, generally only a few volt-amperes or tens of volt-amperes, and the maximum does not exceed one thousand volt-amperes.

[0003] Existing voltage transformers are prone to ferromagnetic resonance during use. Ferromagnetic resonance is a form of self-excited oscillation in power systems. It is a continuous, high-amplitude resonant overvoltage phenomenon caused by the saturation effect of ferromagnetic inductors such as transformers and voltage transformers. Ferromagnetic resonance can cause serious damage to the equipment and reduce its service life. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a voltage transformer, in which a magnet ball rolls downward in a spiral conveying channel under the action of gravity, and enters a launching component when the magnet ball rolls to the bottom of the spiral conveying channel, and is launched by the launching component to re-enter the spiral conveying channel, so that the magnet ball continuously rolls around the voltage transformer body, and the voltage transformer body can be evenly demagnetized, which can effectively avoid ferromagnetic resonance, prevent serious damage to the equipment, and increase the service life of the equipment.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A transformer, comprising a voltage transformer body; a spiral groove is provided on the outer peripheral side of the voltage transformer body; an upper spiral baffle and a lower spiral baffle matched with the spiral groove are fixed on the outer peripheral surface of the voltage transformer body; a spiral conveying channel is formed between the spiral groove and the upper spiral baffle and the lower spiral baffle; a magnet ball matched with each other is rolled in the spiral conveying channel; connectors are fixedly provided at both ends of the spiral conveying channel; a launching assembly is fixed between the two connectors by fastening bolts; the launching assembly comprises a fixing part and a sliding part slidably provided on the fixing part; the fixing part comprises a straight-through pipe; an arc-shaped conduit is connected at one end of the straight-through pipe, and a coil is connected at the other end thereof; a base is fixed at the bottom of the coil; the straight-through pipe and the arc-shaped conduit are respectively fixedly connected to the corresponding connectors by fastening bolts.

[0007] The present invention is further configured as follows: the connecting head located at the top is arranged to be tilted upward; the connecting head located at the bottom is arranged to be tilted downward; a connecting head is arranged in communication with one end of the arc-shaped conduit and the circumferential side surface of the straight-through pipe; connecting flanges are fixed to the two connecting heads and the ends of the two connecting heads; an L-shaped guide groove connected to the spiral conveying channel is provided inside the connecting head.

[0008] The present invention is further configured as follows: an escape opening is provided on the side surface of the straight-through pipe; a slide rail is symmetrically fixed on the surface of the escape opening; a slide rod is fixed between the inner walls of the escape opening; the sliding part includes a T-shaped slide plate; a guide hole for slidingly cooperating with the slide rod is provided on the surface of the T-shaped slide plate; a slide groove for slidingly cooperating with the slide rail is symmetrically provided on the side surface of the T-shaped slide plate; a reset spring mounted on the slide rod is connected between the T-shaped slide plate and the top of the escape opening.

[0009] The present invention is further configured as follows: a sleeve is fixed to the side surface of the T-shaped slide plate; a U-shaped connecting rod is inserted in the sleeve; a guide groove is provided on the inner wall of the sleeve; a guide rail slidingly matched with the guide groove is fixed to the peripheral side surface of the U-shaped connecting rod; a slot is provided on the inner wall of the sleeve; an installation cavity is provided inside the U-shaped connecting rod; an insert plate slidingly matched with the slot is provided inside the installation cavity; a plurality of extrusion springs are connected between the insert plate and the inner wall of the installation cavity; a screw is threaded through the peripheral side surface of the sleeve; an extrusion ball is fixed to one end of the screw, and a handle is fixed to the other end.

[0010] The present invention is further configured as follows: an ear plate is fixed to the top of the sleeve; an iron block is fixed to the bottom of the ear plate; an extension plate is fixed to the circumferential side of the U-shaped connecting rod; an electromagnetic suction cup is fixed to the surface of the extension plate, and a controller is fixed to the bottom thereof; the output end of the controller is electrically connected to the electromagnetic suction cup and the coil respectively; a rubber ball is fixed to the end of the U-shaped connecting rod.

[0011] The present invention is further configured as follows: an ear plate is fixed on the top of the sleeve; an iron block is fixed on the bottom of the ear plate; an extension plate is fixed on the side surface of the U-shaped connecting rod; a vertical rod is fixed on the bottom surface of the extension plate; a piston plate is fixed on the bottom end of the vertical rod; a mounting plate is fixed on the side of the base; a limiting hole that slides with the U-shaped connecting rod is opened on the surface of the mounting plate; a piston cylinder that slides with the piston plate is fixed on the side of the mounting plate.

[0012] The present invention is further configured as follows: a U-shaped rod is fixed to the circumferential side of the piston cylinder; a fixing plate is fixed to the end of the U-shaped rod; an electromagnetic suction cup is fixed to the surface of the fixing plate, and a controller is fixed to the bottom surface thereof; the output end of the controller is electrically connected to the electromagnetic suction cup and the coil respectively; a rubber ball is fixed to the end of the U-shaped connecting rod.

[0013] The present invention is further configured as follows: a connecting plate is fixed on the arc-shaped conduit; a screw rod is rotatably provided on the connecting plate; a ring that slides with the straight-through pipe is threadedly rotatably provided on the screw rod; a positioning block is fixed on the inner wall of the ring; a positioning groove that slides with the positioning block is provided on the outer peripheral side of the straight-through pipe; and the ring is placed under the T-shaped slide plate.

[0014] The present invention is further configured as follows: connection terminals are symmetrically arranged on the top of the voltage transformer body; angle steels are symmetrically fixed on the bottom of the voltage transformer body; a control module and a rectifier module are arranged inside the controller; the alternating current induced by the voltage transformer body is converted into direct current through the rectifier module to provide power for the electromagnetic suction cup, the coil and the controller.

[0015] The advantages of the present invention are:

[0016] The magnet ball of the present invention rolls downward in the spiral conveying channel under the action of gravity, and enters the launching component when rolling to the bottom of the spiral conveying channel, and is launched by the launching component to re-enter the spiral conveying channel, so that the magnet ball can continuously roll around the voltage transformer body, and the voltage transformer body can be evenly demagnetized, which can effectively avoid ferromagnetic resonance, prevent serious damage to the equipment, and increase the service life of the equipment.

[0017] When the magnet ball with weakened magnetism falls into the energized coil, it is magnetized and then launched into the spiral conveying channel, so that the magnet ball can be recycled and the voltage transformer body can be demagnetized repeatedly without replacing the magnet ball, thereby improving the practicability of the device.

[0018] In the magnetized state, the piston plate delivers the air in the piston cylinder into the spiral air delivery pipe, and each group of elastic diaphragms is inflated and expanded to block the falling magnet balls, reduce the rolling speed of the magnet balls, and prevent the magnet balls rolling into the straight-through pipe from being damaged due to excessive speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a mutual inductor of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the voltage transformer body of the present invention.

[0021] Figure 3 For the present invention Figure 2 A magnified image of area A.

[0022] Figure 4 It is a schematic diagram of the structure of the launch component of the present invention.

[0023] Figure 5 For the present invention Figure 4 A magnified view of area B.

[0024] Figure 6 It is a schematic structural diagram of the fixing part of the present invention.

[0025] Figure 7 For the present invention Figure 6 Magnified view of area C.

[0026] Figure 8 It is a schematic structural diagram of the sliding part of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Magnified view of area D.

[0028] Fig.10 It is a structural schematic diagram of the sliding part of the present invention from another angle.

[0029] Fig.11 It is a schematic diagram of the structure of the present invention in a magnetized state.

[0030] Fig.12 For the present invention Fig.11 Enlarged view of area E.

[0031] Fig.13 For the present invention Fig.11 Magnified view of region F.

[0032] Fig.14 It is a schematic diagram of the structure of the present invention in the emission state.

[0033] In the figure: 1. Voltage transformer body; 2. Spiral groove; 3. Upper spiral baffle; 4. Lower spiral baffle; 5. Magnet ball; 6. Connector; 7. Transmitter assembly; 8. Fixed part; 9. Sliding part; 10. Straight pipe; 11. Arc conduit; 12. Coil; 13. Base; 14. Connector; 15. Connecting flange; 16. L-shaped guide groove; 17. Avoidance; 18. Slide rail; 19. Slide rod; 20. T-shaped slide plate; 21. Guide hole; 22. Reset spring; 23. Sleeve; 24. U-shaped connecting rod; 25. Guide groove; 26. Guide rail; 27. Slot; 28. Installation cavity; 29. ​​Insert plate; 30. Extrusion Spring; 31. Screw; 32. Squeeze ball; 33. Handle; 34. Ear plate; 35. Extension plate; 36. Electromagnetic suction cup; 37. Controller; 38. Rubber ball; 39. Vertical rod; 40. Piston plate; 41. Mounting plate; 42. Piston cylinder; 43. Spiral air pipe; 44. First threaded pipe; 45. Second threaded pipe; 46. Threaded sleeve; 47. Air hose; 48. Mounting port; 49. Elastic diaphragm; 50. Ear tube; 51. Connecting plate; 52. Screw; 53. Ring; 54. Terminal block; 55. Iron block; 56. Slide groove; 57. Limit hole; 58. Angle steel; 59. U-shaped rod; 60. Fixing plate. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0037] Example 1: Please refer to Figure 1-14 , the present invention provides the following technical solutions:

[0038] A transformer, specifically, includes a voltage transformer body 1; a spiral groove 2 is provided on the outer peripheral side of the voltage transformer body 1; an upper spiral baffle 3 and a lower spiral baffle 4 matched with the spiral groove 2 are fixed on the outer peripheral surface of the voltage transformer body 1; a spiral conveying channel is formed between the spiral groove 2 and the upper spiral baffle 3 and the lower spiral baffle 4; a magnet ball 5 matched together is rolled in the spiral conveying channel; connectors 6 are fixedly connected at both ends of the spiral conveying channel; a launch assembly 7 is fixed between the two connectors 6 by fastening bolts; the launch assembly 7 includes a fixed part 8 and a sliding part 9 slidably arranged on the fixed part 8; the fixed part 8 includes a straight pipe 10; an arc-shaped conduit 11 is connected at one end of the straight pipe 10, and a coil 12 is connected at the other end; a base 13 is fixed at the bottom of the coil 12; the straight pipe 10 and the arc-shaped conduit 11 are respectively fixedly connected to the corresponding connector 6 by fastening bolts.

[0039] Working principle of the first embodiment: by opening a spiral groove 2 on the outer peripheral side of the voltage transformer body 1 and fixing the upper spiral baffle 3 and the lower spiral baffle 4, the heat dissipation area of ​​the voltage transformer body 1 is increased, thereby improving the heat dissipation effect of the voltage transformer body 1; the magnet ball 5 rolls downward in the spiral conveying channel under the action of gravity, and when the magnet ball 5 rolls to the bottom of the spiral conveying channel, it enters the coil 12 in the launching component 7 and is magnetized, and the magnetized magnet ball 5 is launched by the launching component 7 to re-enter the spiral conveying channel, so that the magnet ball 5 can continuously roll around the voltage transformer body 1, and the voltage transformer body 1 can be evenly demagnetized, which can effectively avoid ferromagnetic resonance, prevent serious damage to the equipment, and improve the service life of the equipment.

[0040] Example 2: Please refer to Figure 1-14 The second embodiment is improved on the basis of the first embodiment as follows. Specifically, the upper connector 6 is tilted upward; the lower connector 6 is tilted downward; a connecting head 14 is connected to one end of the arc-shaped conduit 11 and the side surface of the straight pipe 10; the two connecting heads 14 and the ends of the two connectors 6 are fixed with connecting flanges 15; an L-shaped guide groove 16 connected to the spiral conveying channel is opened inside the connector 6; an avoidance opening 17 is opened on the side surface of the straight pipe 10; the surface of the avoidance opening 17 is symmetrically fixed. A slide rail 18 is fixed; a slide bar 19 is fixed between the inner walls of the avoidance opening 17; the sliding part 9 includes a T-shaped slide plate 20; a guide hole 21 is opened on the surface of the T-shaped slide plate 20 to slide with the slide bar 19; a slide groove 56 is symmetrically opened on the side of the T-shaped slide plate 20 to slide with the slide rail 18; a return spring 22 sleeved on the slide bar 19 is connected between the T-shaped slide plate 20 and the top of the avoidance opening 17; an ear plate 34 is fixed on the top of the sleeve 23; an iron block 55 is fixed on the bottom of the ear plate 34; the side of the U-shaped connecting rod 24 is An extension plate 35 is fixed; a vertical rod 39 is fixed to the bottom of the extension plate 35; a piston plate 40 is fixed to the bottom end of the vertical rod 39; a mounting plate 41 is fixed to the side of the base 13; a limiting hole 57 is opened on the surface of the mounting plate 41 to slide with the U-shaped connecting rod 24; a piston cylinder 42 is fixed to the side of the mounting plate 41 to slide with the piston plate 40; a U-shaped rod 59 is fixed to the side of the piston cylinder 42; a fixing plate 60 is fixed to the end of the U-shaped rod 59; an electromagnetic suction cup 36 is fixed to the surface of the fixing plate 60, and its bottom is fixed There is a controller 37; the output end of the controller 37 is electrically connected to the electromagnetic suction cup 36 and the coil 12 respectively; a rubber ball 38 is fixed to the end of the U-shaped connecting rod 24; a connecting plate 51 is fixed to the arc-shaped guide tube 11; a screw rod 52 is rotatably provided on the connecting plate 51; a ring 53 that slides with the straight pipe 10 is threadedly rotatably provided on the screw rod 52; a positioning block is fixed to the inner wall of the ring 53; a positioning groove that slides with the positioning block is opened on the outer peripheral side of the straight pipe 10; the ring 53 is placed under the T-shaped slide plate 20.

[0041] Working principle of the second embodiment: In the initial state, the electromagnetic suction cup 36 loses power, and the reset spring 22 is in a normal state. At this time, the rubber ball 38 is placed in the straight tube 10 and is located below the connecting head 14 below. At this time, the piston plate 40 is placed in the piston cylinder 42 near its top. At this time, each group of elastic diaphragms 49 is in a normal state, and each group of magnet balls 5 can roll freely downward in the spiral conveying channel under the action of gravity. When the magnet ball 5 rolls to the bottom of the spiral conveying channel, it enters the straight tube 10 through the L-shaped guide groove 16 in the connecting head 14 below, and the corresponding magnet ball 5 falls onto the rubber ball 38 under the action of gravity.

[0042] The control module in the controller 37 controls the electromagnetic suction cup 36 to be energized to attract the iron block 55, and the return spring 22 is stretched, so that the U-shaped connecting rod 24 and the vertical rod 39 are synchronously lowered, so that the magnetic ball 5 placed on the rubber ball 38 is lowered into the energized coil 12 for magnetization.

[0043] By rotating the screw rod 52, the ring 53 is driven to move up and down along the straight tube 10, thereby adjusting the effective movement concentration of the sliding part 9, and then adjusting the effective deformation distance of the reset spring, thereby adjusting the impact force of the generating component 7, and improving the practicality of the device.

[0044] Example 3: Please refer to Figure 1-14 , the third embodiment makes the following improvements on the basis of the second embodiment. Specifically, a sleeve 23 is fixed to the side of the T-shaped slide plate 20; a U-shaped connecting rod 24 is inserted in the sleeve 23; a guide groove 25 is provided on the inner wall of the sleeve 23; a guide rail 26 slidably matched with the guide groove 25 is fixed to the side of the U-shaped connecting rod 24; a slot 27 is provided on the inner wall of the sleeve 23; a mounting cavity 28 is provided inside the U-shaped connecting rod 24; a plug-in plate 29 plugged in and matched with the slot 27 is slidably provided inside the mounting cavity 28; a plurality of extrusion springs 30 are connected between the plug-in plate 29 and the inner wall of the mounting cavity 28; a screw 31 is threadedly connected through the side of the sleeve 23; a squeezing ball 32 is fixed at one end of the screw 31, and a handle 33 is fixed at the other end thereof.

[0045] The working principle of the third embodiment of the present invention is as follows: the end of the U-shaped connecting rod 24 is inserted into the sleeve 23, and when the elastic force of the extrusion spring 30 decreases, the plug plate 29 slides out of the installation cavity 28 and is inserted into the slot 27, thereby completing the assembly of the U-shaped connecting rod 24 and the sleeve 23; when the U-shaped connecting rod 24 needs to be removed from the sleeve 23, the screw 31 is rotated to make it rotate forward and extend into the slot 27, and the plug plate 29 is squeezed to make the plug plate 29 slide into the installation cavity 28, and the U-shaped connecting rod 24 is pulled out to complete the disassembly of the U-shaped connecting rod 24 and the sleeve 23, which is simple to operate and easy to use.

[0046] Example 4: Please refer to Figure 1-14, the fourth embodiment of the present invention is improved as follows on the basis of the third embodiment. Specifically, a vertical rod 39 is fixed to the bottom surface of the extension plate 35; a piston plate 40 is fixed to the bottom end of the vertical rod 39; a mounting plate 41 is fixed to the side of the base 13; a limiting hole 57 is opened on the surface of the mounting plate 41 to slide with the U-shaped connecting rod 24; a piston cylinder 42 is fixed to the side of the mounting plate 41 to slide with the piston plate 40; a spiral gas pipe 43 adapted to the spiral groove 2 is arranged on the outer peripheral side of the voltage transformer body 1; one end of the spiral gas pipe 43 is sealed, and the other end thereof is connected to a first threaded pipe 44; a second threaded pipe 45 is connected to the side of the piston cylinder 42 near its bottom end; the first threaded pipe 44 and the second threaded pipe 45 are connected 5 are all screwed with threaded sleeves 46; a gas hose 47 is connected between the two threaded sleeves 46; a plurality of mounting openings 48 are evenly opened on the upper spiral baffle 3; an elastic diaphragm 49 is arranged inside the mounting opening 48; a plurality of anti-slip protrusions are evenly arranged on the bottom surface of the elastic diaphragm 49; an ear tube 50 is arranged between the spiral gas pipe 43 and the corresponding mounting opening 48; a wiring terminal 54 is symmetrically arranged on the top of the voltage transformer body 1; an angle steel 58 is symmetrically fixed on the bottom of the voltage transformer body 1; a control module and a rectifier module are arranged inside the controller 37; the alternating current induced by the voltage transformer body 1 is converted into direct current through the rectifier module to provide power for the electromagnetic chuck 36, the coil 12 and the controller 37.

[0047] The working principle of the fourth embodiment of the present invention is as follows: during the synchronous descent of the U-shaped connecting rod 24 and the vertical rod 39, the piston plate 40 slides and descends along the piston cylinder 42, and the air in the piston cylinder 42 is pressed into the spiral air pipe 43 through the air hose 47, so that each group of elastic diaphragms 49 is inflated and expanded to block the rolling magnet ball 5, reduce the rolling speed of the magnet ball 5, and prevent the magnet ball 5 rolling into the straight pipe 10 from being damaged due to excessive speed.

[0048] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0052] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A transformer, comprising a voltage transformer body (1); characterized in that: The outer peripheral side surface of the voltage transformer body (1) is provided with a spiral groove (2); an upper spiral baffle (3) and a lower spiral baffle (4) adapted to the spiral groove (2) are fixed to the outer peripheral surface of the voltage transformer body (1); a spiral conveying channel is formed between the spiral groove (2) and the upper spiral baffle (3) and the lower spiral baffle (4); a magnet ball (5) adapted to the spiral conveying channel is arranged in a rolling manner; Both ends of the spiral conveying channel are fixedly connected and provided with connecting heads (6); a launching assembly (7) is fixed between the two connecting heads (6) by means of fastening bolts; the launching assembly (7) comprises a fixing portion (8) and a sliding portion (9) slidably arranged on the fixing portion (8); The fixing portion (8) comprises a straight pipe (10); one end of the straight pipe (10) is connected to an arc-shaped conduit (11), and the other end of the straight pipe (10) is connected to a coil (12); a base (13) is fixed to the bottom of the coil (12); the straight pipe (10) and the arc-shaped conduit (11) are respectively fixedly connected to corresponding connectors (6) by fastening bolts.

2. A mutual inductor according to claim 1, characterized in that: The connecting head (6) located at the top is arranged to be tilted upward; the connecting head (6) located at the bottom is arranged to be tilted downward; a connecting head (14) is arranged to communicate with one end of the arc-shaped conduit (11) and the peripheral side surface of the straight pipe (10); connecting flanges (15) are fixed to the ends of the two connecting heads (14) and the two connecting heads (6); an L-shaped guide groove (16) is provided inside the connecting head (6) and is communicated with the spiral conveying channel.

3. A mutual inductor according to claim 2, characterized in that: The straight pipe (10) is provided with an escape opening (17) on the side surface thereof; slide rails (18) are symmetrically fixed on the surface of the escape opening (17); and slide bars (19) are fixed between the inner walls of the escape opening (17); The sliding portion (9) comprises a T-shaped slide plate (20); a guide hole (21) is provided on the surface of the T-shaped slide plate (20) and is slidably matched with the slide bar (19); a slide groove (56) is symmetrically provided on the side surface of the T-shaped slide plate (20) and is slidably matched with the slide rail (18); and a return spring (22) sleeved on the slide bar (19) is connected between the T-shaped slide plate (20) and the top of the avoidance opening (17).

4. A mutual inductor according to claim 3, characterized in that: A sleeve (23) is fixed to the side of the T-shaped slide plate (20); a U-shaped connecting rod (24) is inserted in the sleeve (23); a guide groove (25) is provided on the inner wall of the sleeve (23); a guide rail (26) slidably matched with the guide groove (25) is fixed to the peripheral side of the U-shaped connecting rod (24); a slot (27) is provided on the inner wall of the sleeve (23); a mounting cavity (28) is provided inside the U-shaped connecting rod (24); a plug plate (29) slidably matched with the slot (27) is provided inside the mounting cavity (28); a plurality of extrusion springs (30) are connected between the plug plate (29) and the inner wall of the mounting cavity (28); a screw rod (31) is threadedly connected through the peripheral side of the sleeve (23); a squeezing ball (32) is fixed to one end of the screw rod (31), and a handle (33) is fixed to the other end of the screw rod (31).

5. A mutual inductor according to claim 4, characterized in that: A lug plate (34) is fixed to the top of the sleeve (23); an iron block (55) is fixed to the bottom of the lug plate (34); an extension plate (35) is fixed to the side surface of the U-shaped connecting rod (24); a vertical rod (39) is fixed to the bottom surface of the extension plate (35); a piston plate (40) is fixed to the bottom end of the vertical rod (39); a mounting plate (41) is fixed to the side of the base (13); a limiting hole (57) is formed on the surface of the mounting plate (41) and is slidably matched with the U-shaped connecting rod (24); and a piston cylinder (42) is fixed to the side of the mounting plate (41) and is slidably matched with the piston plate (40).

6. A mutual inductor according to claim 5, characterized in that: A U-shaped rod (59) is fixed to the side surface of the piston cylinder (42); a fixing plate (60) is fixed to the end of the U-shaped rod (59); an electromagnetic suction cup (36) is fixed to the surface of the fixing plate (60), and a controller (37) is fixed to the bottom surface thereof; an output end of the controller (37) is electrically connected to the electromagnetic suction cup (36) and the coil (12) respectively; and a rubber ball (38) is fixed to the end of the U-shaped connecting rod (24).

7. A mutual inductor according to claim 6, characterized in that: The outer peripheral side surface of the voltage transformer body (1) is provided with a spiral gas pipe (43) adapted to the spiral groove (2); one end of the spiral gas pipe (43) is sealed, and the other end is connected to a first threaded pipe (44); the outer peripheral side surface of the piston cylinder (42) is connected to a second threaded pipe (45) near its bottom end; the first threaded pipe (44) and the second threaded pipe (45) are both threadedly connected with threaded sleeves (46); a gas hose (47) is connected between the two threaded sleeves (46); The upper spiral baffle (3) is evenly provided with a plurality of mounting openings (48); an elastic diaphragm (49) is arranged inside the mounting opening (48); a plurality of anti-slip protrusions are evenly arranged on the bottom surface of the elastic diaphragm (49); and an ear tube (50) is arranged to communicate between the spiral air delivery pipe (43) and the corresponding mounting opening (48).

8. A mutual inductor according to claim 7, characterized in that: A connecting plate (51) is fixed on the arc-shaped conduit (11); a screw rod (52) is rotatably provided on the connecting plate (51); a collar (53) is rotatably provided on the screw rod (52) and is slidably matched with the straight-through pipe (10); a positioning block is fixed on the inner wall of the collar (53); a positioning groove is provided on the outer peripheral side of the straight-through pipe (10) and is slidably matched with the positioning block; and the collar (53) is placed below the T-shaped slide plate (20).

9. A mutual inductor according to claim 8, characterized in that: The top of the voltage transformer body (1) is symmetrically provided with wiring terminals (54); the bottom of the voltage transformer body (1) is symmetrically fixed with angle steels (58); a control module and a rectifier module are arranged inside the controller (37); the alternating current induced by the voltage transformer body (1) is converted into direct current through the rectifier module to provide power for the electromagnetic chuck (36), the coil (12) and the controller (37).

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