Centering structure for assembling permanent magnet coupler

Abstract

The invention provides a centering structure for assembling a permanent magnet coupler, and relates to the technical field of permanent magnet coupler assembly.The centering structure comprises two supporting centering structures which are symmetrically arranged and a centering driving part which drives the two supporting centering structures to move synchronously; the supporting centering structure is composed of a centering supporting cylinder piece, a centering jacking assembly and a centering inner supporting piece, and the jacking plate pieces abut against each other to make the centering inner supporting piece expand in the radial direction, so that shaft sleeves of the permanent magnet rotor part and the conductor rotor part are automatically centered. During assembly, the centering driving part pushes the two supporting structures to move oppositely, the jacking assembly axially moves to drive the inner supporting part to radially jack the inner wall of the shaft sleeve, and concentric positioning of the two rotors is achieved; and after assembly is completed, the driving component moves reversely, and the inner supporting piece retracts and is pulled away. The automatic centering device solves the problems of low centering precision and poor efficiency in traditional assembly, has the advantages of self-adaptive centering, high precision, high universality and quick disassembly and assembly, and is suitable for assembly of permanent magnet couplings of different specifications.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet coupling assembly, in particular to a centering structure for permanent magnet coupling assembly. Background Art

[0002] A permanent magnet coupling is a transmission device that uses the magnetic field generated by permanent magnets to achieve contactless torque transmission. It transmits power from the driving end to the driven end through magnetic coupling, eliminating the need for a mechanical connection and thus avoiding the wear, vibration, and lubrication issues associated with traditional couplings. In recent years, with the improvement of permanent magnet material performance and the development of precision manufacturing technology, permanent magnet couplings have become increasingly widely used in the industrial field.

[0003] Permanent magnet couplings, as non-contact transmission devices, are widely used in industrial transmission due to their wear-free, maintenance-free, and high-efficiency advantages. However, precise alignment of the permanent magnet rotor and the conductive rotor during assembly has always been a technical challenge. Traditional assembly methods typically rely on manual adjustment or mechanical positioning tools, which present the following problems: manual adjustment is easily affected by operating experience, making it difficult to ensure the coaxiality of the two rotors, resulting in uneven air gaps and affecting transmission efficiency; existing tools are mostly designed for specific dimensions and cannot adapt to sleeves with different inner diameters, resulting in insufficient versatility. Summary of the Invention

[0004] The purpose of the present invention is to provide a centering structure for assembling a permanent magnetic coupling to solve the technical problems raised in the background technology.

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

[0006] A centering structure for assembling a permanent magnet coupling comprises a centering drive component and two supporting centering structures, the two supporting centering structures are symmetrically arranged at the two ends of the centering drive component, and the centering drive component can synchronously drive the two supporting centering structures to move toward or away from each other; the permanent magnet rotor part and the conductor rotor part of the permanent magnet coupling can be respectively placed on the supporting centering structures, and the supporting centering structures pass through the shaft sleeve part of the permanent magnet rotor part or the conductor rotor part; the supporting centering structure comprises a centering support cylinder, a centering push assembly and a centering inner support member, the center lines of the centering support cylinders in the two supporting centering structures coincide with each other, and the supporting centering structure is installed in the center A guide fixed disk is fixed at one end of the driving component and inside the supporting centering structure; the centering pushing assembly slides through the center of the guide fixed disk and a pushing plate is provided at the end of the centering pushing assembly facing the other supporting centering structure; a plurality of centering inner support members are circumferentially distributed on the outside of the centering support cylinder, and the end surface of the centering inner support member facing the centering support cylinder is connected to an end surface of the guide fixed disk through a limiting support rod, and the centering inner support member is also connected to the outer wall of the centering pushing assembly through a centering pushing support rod; when the centering pushing assembly moves axially relative to the centering support cylinder, the centering pushing assembly acts on the centering inner support member through the centering pushing support rod to make it move radially relative to the centering support cylinder.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the centering and pushing assembly includes a centering axis rod, a pushing sleeve unit and a tail plate member, the centering axis rod slides through the center of the guide fixed disk and the tail plate member is arranged at the end of the centering axis rod away from the other supporting centering structure, the tail plate member and the guide fixed disk are connected by a rear return spring, the pushing sleeve unit is arranged on the centering axis rod and the end of the centering push support rod away from the centering inner support member is hinged to the pushing sleeve unit.

[0009] In an optional solution: the pushing sleeve unit includes a movable sleeve and a rear action plate, the movable sleeve can be slidably sleeved on the centering axis rod and the two are transitionally matched, the rear action plate is arranged at the end of the movable sleeve facing the pushing plate and the rear action plate and the end surface of the pushing plate are connected by a front limit spring, and the elastic coefficient of the front limit spring is greater than that of the rear return spring.

[0010] In an optional solution: each centering inner support member has two centering top support rods connected to the end side of the centering support cylinder member, and the two centering top support rods are parallel to each other. A plurality of circumferentially distributed axial openings are opened on the circumferential surface of the centering support cylinder member, and the limiting support rods and the centering top support rods both pass through the corresponding axial openings.

[0011] In an optional solution: the centering inner support member includes an inner support abutment rod and multiple inner support balls, the inner support abutment rod has a rolling groove on the end surface away from the centering support cylinder member, multiple inner support balls are installed side by side in the rolling groove and can roll freely, and the top of the inner support ball protrudes from the end surface of the inner support abutment rod away from the centering support cylinder member.

[0012] In an optional scheme: the centering drive component includes an outer rod frame, left and right rotating rods and two support arm rods, the outer rod frame is located on the side of the supporting centering structure, and its length direction is parallel to the axis of the centering support cylinder, the left and right rotating rods are arranged along the length direction of the outer rod frame and the ends of the left and right rotating rods are rotatably connected to the outer rod frame, one end of the outer rod frame is connected to the centering motor, one end of the two support arm rods is respectively connected to the corresponding centering support cylinder, and the other end of the support arm rod is slidably matched with the outer rod frame and spirally matched with the left and right rotating rods.

[0013] In an optional solution: a plurality of pressure sensors are provided on the supporting surface of the push plate, a pressure sensing sheet is provided inside each rolling groove, and the pressure sensor and the plurality of pressure sensing sheets are electrically connected to the centering motor.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects:

[0015] In the centering structure for assembling the permanent magnet coupling provided by the present invention, the permanent magnet rotor part and the conductor rotor part are automatically adjusted to a coaxial position through the synchronously driven support centering structure and the jacking assembly, ensuring uniform air gap and improving transmission performance; multiple centering inner support parts move radially synchronously and evenly press against the inner wall of the sleeve to avoid eccentricity or offset, and the assembly accuracy can reach ±0.05mm; by adjusting the radial displacement of the centering inner support parts, sleeves with different inner diameters can be adapted without changing the tooling; after assembly is completed, the support structure can be automatically retracted and withdrawn, greatly shortening the operation time; the linkage design of the guide fixed plate and the articulated support rod is adopted to ensure the synchronization and reliability of the centering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The figure is a schematic diagram of the positions of the centering structure and the permanent magnetic coupling during assembly in one embodiment of the present invention.

[0018] Figure 2 Schematic diagram of the centering structure in one embodiment of the present invention.

[0019] Figure 3 Schematic diagram of the structure of the centering and jacking assembly in one embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the centering inner support structure in one embodiment of the present invention.

[0021] Figure 5 Schematic diagram of the centering support structure in one embodiment of the present invention.

[0022] Notes on the accompanying drawings: permanent magnet rotor part 100, conductor rotor part 200, supporting centering structure 300, centering support cylinder part 310, centering push-up assembly 320, centering axis rod 321, push-up sleeve unit 322, movable sleeve 3221, rear action plate 3222, tail plate part 323, front limit spring 324, limiting support rod 325, rear return spring 326, centering push-up support rod 327, centering inner support part 330, inner support abutting rod 331, inner support ball 332, rolling groove 333, guide fixing plate 340, centering drive part 400, outer rod frame 410, left and right rotating rod parts 420, support arm rod 430, centering motor 440, push-up plate part 500, pressure sensor 510. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] The left, right, up, and down positions of the components shown in the accompanying drawings are merely one arrangement, and the specific positions are set according to specific needs.

[0025] In one embodiment, Figure 1-Figure 5As shown, a centering structure for assembling a permanent magnet coupling includes a centering drive component 400 and two supporting centering structures 300. The two supporting centering structures 300 are symmetrically arranged at the two ends of the centering drive component 400, and the centering drive component 400 can synchronously drive the two supporting centering structures 300 to move toward or away from each other; the permanent magnet rotor part 100 and the conductor rotor part 200 of the permanent magnet coupling can be respectively placed on the supporting centering structure 300 and the supporting centering structure 300 passes through the sleeve part of the permanent magnet rotor part 100 or the conductor rotor part 200; the supporting centering structure 300 includes a centering support member 310, a centering push assembly 320 and a centering inner support member 330, the center lines of the centering support members 310 in the two supporting centering structures 300 coincide with each other, and the supporting centering structure 300 is installed on the centering drive component. 400 and a guide fixed disk 340 is fixed inside the supporting centering structure 300; the centering pushing assembly 320 slides through the center of the guide fixed disk 340 and a pushing plate 500 is provided at the end of the centering pushing assembly 320 toward the other supporting centering structure 300; a plurality of centering inner support members 330 are circumferentially distributed on the outside of the centering support cylinder 310, and the end surface of the centering inner support member 330 facing the centering support cylinder 310 is connected to an end surface of the guide fixed disk 340 through a limiting support rod 325, and the centering inner support member 330 is also connected to the outer wall of the centering pushing assembly 320 through a centering push rod 327; when the centering pushing assembly 320 moves axially relative to the centering support cylinder 310, the centering pushing assembly 320 acts on the centering inner support member 330 through the centering push rod 327 to make it move radially relative to the centering support cylinder 310.

[0026] In the embodiment of the present invention, in the initial state, the two supporting centering structures 300 are in a state of being away from each other and the opposite ends of the centering push-up assembly 320 are extended from the end of the centering support cylinder 310; the permanent magnet rotor part 100 and the conductor rotor part 200 of the permanent magnet coupling are respectively placed on the two supporting centering structures 300 and the supporting centering structure 300 passes through the shaft sleeve part of the corresponding permanent magnet rotor part 100 or the conductor rotor part 200; before the permanent magnet coupling is assembled, the centering drive component 400 works and drives the two supporting centering structures 300 to move closer to each other; when the ends of the two centering push-up assemblies 320 are pushed away, the centering drive component 400 is in a state of being away from each other and the opposite ends of the centering push-up assemblies 320 are extended from the end of the centering support cylinder 310; the permanent magnet rotor part 100 and the conductor rotor part 200 of the permanent magnet coupling are respectively placed on the two supporting centering structures 300 and the supporting centering structures 300 pass through the shaft sleeve part of the corresponding permanent magnet rotor part 100 or the conductor rotor part 200; before the permanent magnet coupling is assembled, the centering drive component 400 works and drives the two supporting centering structures 300 to move closer to each other; when the ends of the two centering push-up assemblies 320 are pushed away, the centering drive component 400 is in a state of being away from each other and the opposite ends of the centering push-up assemblies 320 are extended from the end of the centering support cylinder 310 When the movable plate members 500 abut against each other, the two centering support cylinder members 310 continue to approach each other. At this time, the centering push-up assembly 320 moves axially relative to the centering support cylinder member 310. The centering push-up assembly 320 is pushed by the centering support rod 327 and the guide fixing plate 340 limits the centering inner support member 330 by limiting the support rod 325. Multiple centering inner support members 330 move radially relative to the centering support cylinder member 310 synchronously until the centering inner support member 330 is away from the end face of the centering support cylinder member 310 and abuts against the inner wall of the shaft sleeve. Since multiple centering inner support members 330 move synchronously and act on the inner wall of the shaft sleeve, the shaft sleeve can be The two centering jacking assemblies 320 move synchronously and support each other, and the permanent magnet rotor part 100 and the conductor rotor part 200 on the two supporting centering structures 300 can adaptively keep coinciding with the axis of the centering support cylinder 310, and the permanent magnet rotor part 100 and the conductor rotor part 200 can be automatically centered and concentric. During assembly, the permanent magnet rotor part 100 and the conductor rotor part 200 always remain in a supported state to avoid offset during assembly and ensure assembly accuracy. It is suitable for the inner sleeve part of the permanent magnet coupling. diameter size; after the permanent magnet coupling is assembled, the centering drive component 400 drives the two supporting centering structures 300 to move away from each other, and the centering push-up assembly 320 moves axially back relative to the centering support cylinder 310, and the centering inner support member 330 moves radially back relative to the centering support cylinder 310 and no longer abuts against the inner wall of the sleeve portion, so that the entire supporting centering structure 300 can be pulled out from the ends of the permanent magnet rotor portion 100 and the conductor rotor portion 200 to achieve rapid disassembly; wherein, the two ends of the limiting support rod 325 are respectively hinged to the end face of the centering inner support member 330 facing the centering support cylinder 310 and the end face of the guide fixing plate 340.

[0027] In one embodiment, Figure 2-Figure 5As shown, the centering and pushing assembly 320 includes a centering axis rod 321, a pushing sleeve unit 322 and a tail plate part 323. The centering axis rod 321 slides through the center of the guide fixed disk 340 and the tail plate part 323 is arranged at the end of the centering axis rod 321 away from the other supporting centering structure 300. The tail plate part 323 is connected to the guide fixed disk 340 through a rear return spring 326. The pushing sleeve unit 322 is arranged on the centering axis rod 321 and the end of the centering supporting rod 327 away from the centering inner supporting member 330 is hinged to the pushing sleeve unit 322. In the embodiment of the present invention, when the pushing plates 500 in the two supporting centering structures 300 abut against each other, the two centering axis rods 321 are relative to the inside of the centering support cylinder part 310 where they are located. Axially moving, the pushing sleeve unit 322 and the tail plate component 323 follow the movement of the centering shaft rod 321, and the moving action of the pushing sleeve unit 322 acts on the centering inner support component 330 through the centering push support rod 327 to make it move radially relative to the centering support cylinder 310, thereby adjusting the axis of the permanent magnet rotor part 100 or the conductor rotor part 200 sleeve part and making it concentric with the centering support cylinder 310; the movement of the tail plate component 323 can stretch the rear return spring 326, and after the permanent magnet coupling is assembled, the centering shaft rod 321 can be automatically reset under the elastic force of the rear return spring 326 to restore the deformation. Due to the existence of the rear return spring 326, the positions of the centering pushing components 320 in the two supporting centering structures 300 in the centering support cylinder 310 remain synchronized.

[0028] In one embodiment, Figure 2-Figure 5As shown, the push sleeve unit 322 includes a movable sleeve 3221 and a rear action plate 3222. The movable sleeve 3221 can be slidably sleeved on the centering axis rod 321 and the two are transitionally matched. The rear action plate 3222 is provided at the end of the movable sleeve 3221 facing the push plate 500 and the rear action plate 3222 is connected to the end surface of the push plate 500 through a front limit spring 324. The elastic coefficient of the front limit spring 324 is greater than that of the rear return spring 326. In this embodiment of the present invention, when the permanent magnet When the sleeve portion of the rotor portion 100 and the sleeve portion of the conductor rotor portion 200 have different diameters due to manufacturing reasons, when the centering shaft rod 321 moves axially relative to the centering support cylinder 310, the centering inner support member 330 does not abut against the inner wall of the sleeve portion and thus has no resistance, thereby pushing the sleeve unit 322 to move axially following the centering shaft rod 321, so as to ensure that the multiple centering inner support members 330 move radially synchronously relative to the centering support cylinder 310; when all the centering inner support members 330 in one of the supporting centering structures 300 move axially relative to the centering support cylinder 310; When the centering inner support 330 in the other centering support structure 300 does not rest on the inner wall of the sleeve, the centering drive component 400 continues to drive the two centering support structures 300 closer to each other. In the centering support structure 300 in which all the centering inner support members 330 rest on the inner wall of the sleeve, the top sleeve unit 322 no longer moves with the centering shaft rod 321 due to the limitation that the top sleeve unit 322 can slide relative to the centering shaft rod 321 and the centering inner support member 330 rests on the inner wall of the sleeve. The pushing sleeve unit 322 in the other supporting centering structure 300 moves with the centering axis rod 321 and acts on the centering inner support member 330 through the centering push support rod 327 to make it press against the inner wall of the sleeve part, thereby ensuring that the inner walls of the two sleeve parts are pressed tightly by the centering inner support member 330, thereby ensuring the concentricity of the permanent magnet rotor part 100 and the conductor rotor part 200, and automatically adapting to compensate for the error problem of adjusting the concentricity of the sleeve part of the permanent magnet rotor part 100 and the sleeve part of the conductor rotor part 200 due to manufacturing and other reasons.

[0029] In one embodiment, Figure 2-Figure 5As shown, each centering inner support member 330 is connected to two centering top support rods 327 toward the end side of the centering support cylinder 310, and the two centering top support rods 327 are parallel. A plurality of circumferentially distributed axial openings 311 are provided on the circumferential surface of the centering support cylinder 310, and the limiting support rods 325 and the centering top support rods 327 both pass through the corresponding axial openings 311; in the embodiment of the present invention, the setting of the two centering top support rods 327 can limit the centering inner support member 330 to avoid the centering inner support member 330 from rotating around the connection between it and one of the centering top support rods 327, thereby ensuring that the centering inner support member 330 always maintains radial movement relative to the centering support cylinder 310, and the setting of the axial openings 311 can avoid interference between the centering top support rods 327 and the limiting support rods 325 and the centering support cylinder 310 when they move.

[0030] In one embodiment, Figure 1-Figure 5 As shown, the centering inner support member 330 includes an inner support abutting rod 331 and a plurality of inner support balls 332. The inner support abutting rod 331 has a rolling groove 333 on the end face away from the centering support cylinder 310. The plurality of inner support balls 332 are installed side by side in the rolling groove 333 and can roll freely. The top of the inner support balls 332 protrudes from the end face of the inner support abutting rod 331 away from the centering support cylinder 310. In the embodiment of the present invention, when the centering inner support member 330 abuts against the inner wall of the shaft sleeve part, the plurality of inner support balls 332 contact the inner wall of the shaft sleeve part in a rolling manner. Since the inner support balls 332 can roll freely in the rolling groove 333, the shaft sleeve part can rotate and move axially relative to the supporting centering structure 300, so as to facilitate the adaptive adjustment of the position and state of the permanent magnet rotor part 100 and the conductor rotor part 200 when assembling the permanent magnet coupling.

[0031] In one embodiment, Figure 2-Figure 5 As shown, the centering drive component 400 includes an outer rod frame 410, left and right screw rods 420 and two support arms 430. The outer rod frame 410 is located on the side of the supporting centering structure 300, and its length direction is parallel to the axis of the centering support cylinder 310. The left and right screw rods 420 are arranged along the length direction of the outer rod frame 410 and the ends of the left and right screw rods 420 are rotatably connected to the outer rod frame 410. One end of the outer rod frame 410 is connected to the centering motor 440, and one end of the two support arms 430 is respectively connected to the corresponding centering support cylinder The two ends of the support arm 430 are connected to each other, and the other end of the support arm 430 is slidably matched with the outer rod frame 410 and spirally matched with the left and right screw rods 420. In this embodiment of the present invention, the centering motor 440 works and drives the left and right screw rods 420 to rotate. The left and right screw rods 420 use the opposite spiral directions at their two ends to drive the two support arms 430 to move toward or away from each other, and the support centering structure 300 follows the movement of the corresponding support arm 430 to achieve the support and separation of the two centering push-up components 320, and further achieve automatic centering and removal.

[0032] In one embodiment, Figure 2-Figure 5 As shown, the supporting surface of the push plate 500 is provided with a plurality of pressure sensors 510, and each rolling groove 333 is provided with a pressure sensing sheet. The pressure sensors 510 and the plurality of pressure sensing sheets are electrically connected to the centering motor 440. In the embodiment of the present invention, during the automatic centering process, the centering motor 440 is always in a working state. After the two push plates 500 collide with each other, the pressure sensors 510 generate a sensing signal and transmit it to the centering motor 440. The centering motor 440 automatically adjusts the speed of the output shaft, thereby rotating left and right. The rotation speed of the screw rod 420 is reduced, so that the movement speed of the two supporting centering structures 300 approaching each other is reduced, thereby reducing its inertial impulse when the centering inner support member 330 contacts the inner wall of the sleeve part; when the centering inner support member 330 contacts the inner wall of the sleeve part, the pressure sensing sheet can generate induction. Since the centering inner support member 330 contacts the inner wall of the sleeve part one by one, each time the inner wall of the sleeve part contacts a centering inner support member 330, the rotation speed of the output shaft of the centering motor 440 is reduced, effectively reducing the impact of the centering inner support member 330 on the inner wall of the sleeve part.

[0033] The above embodiment provides a centering structure for assembling a permanent magnet coupling, wherein the permanent magnet rotor portion 100 and the conductor rotor portion 200 of the permanent magnet coupling are respectively placed on two supporting centering structures 300, and the supporting centering structures 300 pass through the sleeve portion of the corresponding permanent magnet rotor portion 100 or the conductor rotor portion 200; before the permanent magnet coupling is assembled, the centering drive component 400 works and drives the two supporting centering structures 300 to approach each other; when the ejection plates 500 at the ends of the two centering ejection assemblies 320 abut against each other, the two centering support cylinders 310 continue to approach each other. At this time, the centering push assembly 320 moves axially relative to the centering support cylinder 310. The centering push assembly 320 is pushed by the centering support rod 327 and the guide fixing plate 340 limits the centering inner support member 330 by limiting the support rod 325. The multiple centering inner support members 330 move radially relative to the centering support cylinder 310 synchronously until the centering inner support member 330 is away from the end face of the centering support cylinder 310 and abuts against the inner wall of the shaft sleeve. Since the multiple centering inner support members 330 move synchronously and act on the inner wall of the shaft sleeve, The shaft sleeve moves relative to the centering support member 310 and gradually moves to a position that coincides with the axis of the centering support member 310; since the two centering push components 320 move synchronously and abut against each other, the permanent magnet rotor portion 100 and the conductor rotor portion 200 on the two supporting centering structures 300 can adaptively keep coincident with the axis of the centering support member 310, and the permanent magnet rotor portion 100 and the conductor rotor portion 200 can automatically align and be concentric. During assembly, the permanent magnet rotor portion 100 and the conductor rotor portion 200 are always kept in a supported state to avoid assembly When the centering drive component 400 is assembled, the two supporting centering structures 300 are driven away from each other, and the centering push assembly 320 moves axially back relative to the centering support cylinder 310, and the centering inner support component 330 moves radially back relative to the centering support cylinder 310 and no longer abuts against the inner wall of the sleeve part, so that the entire supporting centering structure 300 can be pulled out from the ends of the permanent magnet rotor part 100 and the conductor rotor part 200 to achieve rapid disassembly.

[0034] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A centering structure for assembling a permanent magnetic coupling, comprising a centering drive component and two supporting centering structures, characterized in that: The two supporting centering structures are symmetrically arranged at the two ends of the centering drive component, and the centering drive component can synchronously drive the two supporting centering structures to move toward or away from each other; The permanent magnet rotor part and the conductor rotor part of the permanent magnet coupling can be respectively placed on the supporting centering structure, and the supporting centering structure passes through the sleeve part of the permanent magnet rotor part or the conductor rotor part; The support and centering structure includes a centering support cylinder, a centering push-up assembly and a centering inner support member; The center lines of the centering support cylinders in the two centering support structures coincide with each other. The centering support structure is mounted on one end of the centering drive component and a guide fixed disk is fixed inside the centering support structure. The centering push assembly slides through the center of the guide fixed disk and a push plate is provided on the end of the centering push assembly facing the other centering support structure. A plurality of centering inner support members are circumferentially distributed outside the centering support member. The end surface of the centering inner support member facing the centering support member is connected to an end surface of the guide fixed plate through a limiting support rod. The centering inner support member is also connected to the outer wall of the centering push assembly through a centering push support rod. When the centering push assembly moves axially relative to the centering support cylinder inside the centering support cylinder, the centering push assembly acts on the centering inner support member through the centering push support rod to make it move radially relative to the centering support cylinder.

2. The centering structure for assembling a permanent magnetic coupling according to claim 1, characterized in that: The centering and pushing assembly includes a centering shaft rod, a pushing sleeve unit and a tail plate component; The centering axis rod slides through the center of the guide fixed disk and the tail plate member is arranged at the end of the centering axis rod away from the other supporting centering structure. The tail plate member and the guide fixed disk are connected by a rear return spring. The pushing sleeve unit is arranged on the centering axis rod and the end of the centering support rod away from the centering inner support member is hinged to the pushing sleeve unit.

3. The centering structure for assembling a permanent magnetic coupling according to claim 2, characterized in that: The push sleeve unit includes a movable sleeve and a rear action plate, wherein the movable sleeve can be slidably sleeved on the centering shaft and the two are transitionally matched; The rear action plate is arranged at the end of the movable sleeve toward the push plate, and the rear action plate and the end surface of the push plate are connected through a front limit spring, and the elastic coefficient of the front limit spring is greater than the rear return spring.

4. The centering structure for assembling a permanent magnetic coupling according to claim 3, characterized in that: Each centering inner support member is connected to two centering top support rods facing the end side of the centering support cylinder member, and the two centering top support rods are parallel; A plurality of circumferentially distributed axial openings are provided on the circumferential surface of the centering support cylinder, and the limiting support rods and the centering top support rods both pass through the corresponding axial openings.

5. The centering structure for assembling a permanent magnetic coupling according to claim 3, characterized in that: The centering inner support member includes an inner support abutting rod and a plurality of inner support balls; The inner support rod has a rolling groove on its end surface away from the centering support cylinder. Multiple inner support balls are installed side by side in the rolling groove and can roll freely. The tops of the inner support balls protrude from the end surface of the inner support rod away from the centering support cylinder.

6. The centering structure for assembling a permanent magnetic coupling according to claim 5, characterized in that: The centering drive component includes an outer rod frame, left and right screw rods and two support arm rods; The outer rod frame is located on the side of the supporting centering structure, and its length direction is parallel to the axis of the centering support cylinder. The left and right screw rods are arranged along the length direction of the outer rod frame, and the ends of the left and right screw rods are rotatably connected to the outer rod frame. One end of the outer rod frame is connected to a centering motor, one end of the two arm rods is connected to the corresponding centering support cylinder parts, and the other end of the arm rod is slidably matched with the outer rod frame and spirally matched with the left and right screw rod parts.

7. The centering structure for assembling a permanent magnetic coupling according to claim 6, characterized in that: The supporting surface of the push plate is provided with a plurality of pressure sensors; Each rolling groove is provided with a pressure sensing sheet inside, and the pressure sensor and the plurality of pressure sensing sheets are electrically connected to the centering motor.

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