Permanent magnet disc for permanent magnet coupler and permanent magnet coupler

Abstract

The invention discloses a permanent magnet disc for a permanent magnet coupler and the permanent magnet coupler, and relates to the technical field of permanent magnet couplers. The permanent magnet disc for the permanent magnet coupler comprises a permanent magnet disc body which is provided with at least two accommodating grooves for rollers; one roller is located in one containing groove for the roller; wherein in the working process of the permanent magnet coupler, when the permanent magnet disc of the permanent magnet coupler and the conductor disc of the permanent magnet coupler get close to each other to be in contact with each other, the conductor disc firstly makes contact with the roller, and rolling friction is formed between the conductor disc and the roller after the conductor disc makes contact with the roller. Through the arrangement of the rollers, when the conductor rotor makes contact with the magnet rotor, the conductor rotor makes contact with the rollers firstly, and due to the fact that the rollers are cylindrical, rolling friction is formed between the conductor rotor and the magnet rotor.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet couplers, and in particular to a permanent magnet disk used for a permanent magnet coupler and a permanent magnet coupler. Background Art

[0002] Permanent magnetic coupling is a non-contact coupling, which includes a conductor rotor and a magnet rotor. There is relative motion between the conductor rotor and the magnet rotor. The conductor disk on the conductor rotor cuts the magnetic induction line on the magnet rotor, generating an induced current. The induced current generates an electromagnetic field, which couples with the physical magnetic field on the magnet rotor to achieve non-contact transmission. This product has the advantages of non-contact, maintenance-free, low installation and alignment requirements, and long life, so it is widely promoted.

[0003] At present, the main reason affecting the life of the product is the damage caused by the friction between the conductor rotor and the magnet rotor. There are two main reasons for the friction: one is that after the host equipment is used for a long time, the bearing wears out, resulting in too much axial movement of the transmission shaft; the other is that the anchor bolts of the host are loose, causing the whole host to move. At present, although these two reasons for the damage have been found, there is no effective solution. The only way is to regularly check the axial clearance between the conductor rotor and the magnet rotor through manual inspection, commonly known as "air gap".

[0004] Therefore, those skilled in the art provide a permanent magnet disk for a permanent magnet coupler to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a permanent magnet magnet for a permanent magnet coupler.

[0006] To achieve the above object, the present invention provides the following technical solutions: A permanent magnet disk for a permanent magnet coupler, the permanent magnet disk for a permanent magnet coupler comprising: A permanent magnetic disk body, wherein the permanent magnetic disk body is provided with at least two roller receiving grooves; A roller, a roller is located in a roller receiving groove; wherein, During the operation of the permanent magnetic coupler, when the permanent magnetic disk of the permanent magnetic coupler and the conductor disk of the permanent magnetic coupler approach each other and contact each other, the conductor disk first contacts the roller.

[0007] Optionally, when in use, one side of the permanent magnetic disk body is opposite to the conductor disk, and the side is referred to as a first side of the permanent magnetic disk body, and a plurality of permanent magnet receiving grooves and the roller receiving grooves are provided on the first side of the permanent magnetic disk body; The permanent magnet disk for a permanent magnet coupler further includes a permanent magnet, and the permanent magnet is accommodated in the permanent magnet accommodating groove.

[0008] Optionally, the first side of the permanent magnetic disk body of the permanent magnetic disk body is recessed toward the other side to form a accommodating groove for the roller, and the minimum vertical distance between the center axis of the roller and the first side of the permanent magnetic disk body is less than the radius of the roller.

[0009] Optionally, the permanent magnet disk for the permanent magnet coupler further comprises: A roller mounting shaft, wherein the roller mounting shaft is mounted in the roller receiving groove; An axial hole is arranged in the middle of the roller, one roller is located in a roller accommodating groove, and the roller is sleeved on the roller mounting shaft through the axial hole.

[0010] Optionally, the permanent magnet disk for the permanent magnet coupler further comprises: A support frame is arranged in the roller receiving groove, and the roller is arranged in the support frame.

[0011] Optionally, the roller receiving groove and the permanent magnet receiving groove have the same structure.

[0012] Optionally, a first opening is provided on one end of the support frame, and the first opening is used for allowing the roller to enter the support frame through the first opening.

[0013] Optionally, the permanent magnet disk for the permanent magnet coupler further comprises a pressure sensor, and the pressure sensor is arranged on the outer surface of the roller.

[0014] Optionally, when the conductor disk contacts at least one of the rollers, the inclination angle information of the conductor disk is obtained by the following formula: ;in, , ;in, P i : The reading of the pressure sensor on the i-th roller; θ: the inclination angle of the conductor disk relative to the virtual plane formed by each roller, the virtual plane being parallel to the plane of the side of the magnet disk where the rollers are provided; (x i ,y i ): Coordinates of the ith roller on the virtual plane.

[0015] The present application also provides a permanent magnet coupler, which includes the permanent magnet disk for the permanent magnet coupler as described above.

[0016] The present invention has the following beneficial effects: When the permanent magnetic disk for permanent magnetic coupler proposed by the present invention is used in the permanent magnetic coupler, since rollers are provided, during the process that the conductor rotor and the magnet rotor rotate relative to each other and approach each other, if the conductor rotor contacts the magnet rotor, it will also contact the rollers first. Since the disk rollers are cylindrical, rolling friction is formed between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a permanent magnetic disk used for a permanent magnetic coupler in the first embodiment of the present invention; Figure 2 is a schematic structural diagram of a support frame in a first embodiment of the present invention; Figure 3 is another structural schematic diagram of the support frame in the first embodiment of the present invention; Figure 4 yes Figure 1 A schematic structural diagram of a roller in a permanent magnetic disk used in a permanent magnetic coupler is shown; Figure 5 yes Figure 2 A schematic diagram of a structure in which a roller in a permanent magnetic disk used in a permanent magnetic coupler is arranged in a support frame; Figure 6 is another structural schematic diagram of a support frame in a second embodiment of the present invention; Figure 7 is a schematic structural diagram of a roller arranged on a support frame in a second embodiment of the present invention; Figure 8 It is a schematic structural diagram of a permanent magnetic disk used for a permanent magnetic coupler in a third embodiment of the present invention; Fig. 9 4 is a schematic cross-sectional structural diagram of a permanent magnetic disk used in a permanent magnetic coupler in a third embodiment of the present invention.

[0018] Legend: 1. Permanent magnetic disk body; 2. Roller; 11. First side of permanent magnetic disk body; 3. Support frame; 4. Receiving groove for roller; 41. Receiving groove bottom; 42. Receiving groove first side wall; 43. Receiving groove second side wall; 44. Receiving groove first end wall; 45. Receiving groove second end wall; 31. Support frame bottom plate; 32. Support frame first side wall; 33. Support frame second side wall; 34. Support frame first end plate; 35. Support frame first half baffle; 36. Support frame second half baffle; 37. Support frame second end plate; 371. First opening; 5. Roller mounting shaft. DETAILED DESCRIPTION

[0019] 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 in 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. In the description of this application, it should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0020] like Figure 1 The permanent magnet disk for the permanent magnet coupler shown comprises a permanent magnet disk body 1 and a roller 2, wherein: At least two roller receiving grooves 4 are provided on the permanent magnetic disk body 1; one roller 2 is located in one roller receiving groove 4; During the operation of the permanent magnetic coupler, when the permanent magnetic disk of the permanent magnetic coupler and the conductor disk of the permanent magnetic coupler approach each other and contact each other, the conductor disk first contacts the roller and forms rolling friction with the roller after contact.

[0021] When the permanent magnetic disk for permanent magnetic coupler proposed by the present invention is used in the permanent magnetic coupler, since rollers are provided, during the process that the conductor rotor and the magnet rotor rotate relative to each other and approach each other, if the conductor rotor contacts the magnet rotor, it will also contact the rollers first. Since the disk rollers are cylindrical, rolling friction is formed between the two.

[0022] Specifically, after the conductor disc contacts the roller, since the conductor disc keeps rotating, it will not stop rotating even after contacting the roller. At this time, the conductor disc contacts the roller and drives the roller to rotate, thereby forming rolling friction between the conductor disc and the roller.

[0023] In this embodiment, when in use, one side of the permanent magnetic disk body is opposite to the conductor disk, and this side is called the first side 11 of the permanent magnetic disk body. A plurality of permanent magnet receiving grooves and the roller receiving groove are provided on the first side 11 of the permanent magnetic disk body. The permanent magnet disk for the permanent magnet coupler further includes a permanent magnet received in the permanent magnet receiving groove.

[0024] See also Figure 5 In this embodiment, the first side 11 of the permanent magnetic disk body of the permanent magnetic disk body is recessed toward the other side to form the roller accommodating groove 4, and the minimum vertical distance between the center axis of the roller and the first side 11 of the permanent magnetic disk body is less than the radius of the roller.

[0025] In this way, when the permanent magnet disk and the conductor disk of the permanent magnet coupler approach each other and contact each other, it can be ensured that the conductor disk first contacts the roller instead of contacting other parts of the permanent magnet disk body.

[0026] In this embodiment, the central axis of the roller is perpendicular to the central axis of the permanent magnet disk body.

[0027] In this way, it can be ensured that when rolling friction is generated, the friction force between the roller and the conductor disk will not generate component forces in other directions when the roller rolls.

[0028] See also Figures 2 to 5 In this embodiment, the permanent magnetic disk for the permanent magnetic coupler further includes a support frame 3, the support frame 3 is arranged in the roller receiving groove, and the roller is arranged in the support frame.

[0029] By adopting the method of setting a support frame, the permanent magnet receiving groove of the existing permanent magnet disk can be used as the roller receiving groove, and the support frame can be directly made into a shape that can be accommodated in the roller receiving groove, so that the existing permanent magnet disk can be quickly modified without the need to re-produce a new permanent magnet disk. In addition, since the roller may generate friction with the peripheral side when rolling, in this way, if the support frame is damaged or unsuitable due to friction, the support frame can be directly replaced.

[0030] The method of the present application can achieve that when the conductor rotor contacts the magnet rotor, it will first contact the roller without modifying the existing permanent magnet. Since the disc roller is cylindrical, rolling friction is formed between the two. In addition, compared with the prior art, the magnet rotor of the present application does not need to change the volume and position of the original magnet rotor to achieve the method of the present application.

[0031] In the prior art, the permanent magnet accommodating slot is generally open on both sides of the axial direction of the permanent magnet disk. A back iron is installed on one side of the permanent magnet disk to serve as the installation bottom surface of the permanent magnet. A threaded hole is provided on the back iron at a position corresponding to each permanent magnet accommodating slot. The threaded hole is used to eject the permanent magnet when it needs to be removed.

[0032] Generally, the number of permanent magnet receiving slots on the permanent magnet disk will be processed according to the maximum number allowed to match the versatility of different models. For example, a permanent magnet disk body is provided with 20 permanent magnet receiving slots. According to the requirements of different models, the actual number of permanent magnets to be installed may be 14, 16, or 18; when there are remaining permanent magnet receiving slots, the support frame can be directly installed in the unused permanent magnet receiving slots and fixed through the threaded holes.

[0033] In the present embodiment, the roller is cylindrical. This structure results in that when the cylindrical outer surface of the roller of the present application contacts the conductor rotor during rotation, the rotation direction of the conductor rotor can be limited without providing forces in other directions to the conductor rotor (for example, if it is spherical, once a component force in other directions occurs, the spherical roller may instead provide the conductor rotor with a force that may cause the conductor rotor to be misaligned).

[0034] See also Figure 2 , Figure 3 In this embodiment, the roller receiving groove 4 includes a receiving groove bottom 41, a first side wall 42, a second side wall 43, a first end wall 44 and a second end wall 45; wherein the first side wall 42 is opposite to the second side wall 43, and the first end wall 44 is opposite to the second end wall 45; The support frame 3 includes a support frame bottom plate 31, a support frame first side wall 32, a support frame second side wall 33, a support frame first end plate 34, a support frame first half baffle 35 and a support frame second half baffle 36; wherein, The support frame bottom plate 31 is in contact with the bottom 41 of the receiving groove; The first side wall 32 of the support frame contacts the first side wall 42 of the receiving groove; The second side wall 33 of the supporting frame is in contact with the second side wall 43 of the receiving groove; The first end plate 34 of the support frame is in contact with the first end wall 44 of the receiving groove; The first side wall 32 of the support frame extends toward the second side wall of the support frame to form a first half baffle 35 of the support frame; The second side wall 33 of the support frame extends toward the first side wall 32 of the support frame to form a second half baffle 36 of the support frame; The first half baffle 35 of the support frame and the second half baffle 36 of the support frame are spaced apart to form an opening, and the roller 2 located in the support frame 3 is partially exposed from the opening, and the part exposed from the opening is used to contact the conductor disk; wherein, The support frame bottom plate 31 , the support frame first side wall 32 , the support frame second side wall 33 , the support frame first end plate 34 , the support frame first half baffle 35 and the support frame second half baffle 36 together form an accommodating portion for accommodating the roller 2 .

[0035] In this embodiment, a first opening 371 is provided on one end of the support frame. The first opening 371 is connected to the accommodating portion. The first opening 371 is used for allowing the roller 2 to enter the support frame 3 from the first opening.

[0036] In one embodiment, one end of the support frame here may be a first end plate 34 of the support frame.

[0037] See also Figure 2 , Figure 3 as well as Figure 5 In this embodiment, the support frame further includes a second end plate 37 of the support frame, and the second end plate 37 of the support frame is opposite to the first end plate 34 of the support frame. A first opening 371 is provided on the second end plate 37 of the support frame, and the first opening 371 is connected to the accommodating portion. The first opening 371 is used for allowing the roller 2 to enter the accommodating portion from the first opening.

[0038] In this embodiment, the roller receiving groove and the permanent magnet receiving groove have the same structure. In this way, each permanent magnet receiving groove can be used to place both the permanent magnet and the support frame, and can be arranged and placed according to the position of the support frame and the permanent magnet.

[0039] This method facilitates the installation of the roller, that is, in actual installation, the roller 2 is partially placed into the accommodating portion of the support frame through the first opening 371 .

[0040] In this embodiment, the support frame and the roller receiving groove are detachably connected.

[0041] In this embodiment, the permanent magnet disk for the permanent magnet coupler further includes a pressure sensor, and the pressure sensor is arranged on the outer surface of the roller 2. It can be understood that the pressure sensor can also be arranged between the roller receiving groove and the support frame.

[0042] By setting up a pressure sensor, the changes between the roller receiving groove and the support frame can be obtained in real time. When the conductor disk is continuously squeezed toward the magnetic disk (that is, the air gap continues to decrease), the pressure detected by the pressure sensor will continue to increase. When a certain threshold is reached, an alarm can be issued.

[0043] See also Figure 1 In this embodiment, the number of support frames is 4, which are evenly distributed on the permanent magnetic disk. This ensures that when the conductor disk and the magnetic disk are in relative contact and friction, each position can be guaranteed to transmit force through the roller of the present application, and the force on the magnetic disk is more uniform.

[0044] In this embodiment, a connecting shaft is provided in the support frame; A through hole is arranged in the middle of the roller, and the roller is sleeved on the connecting shaft through the through hole.

[0045] In this way, the connecting shaft can limit the rolling direction of the roller, preventing the roller from deflecting when the roller rolls between the conductor disk. In addition, in this way, the roller only needs to be limited by the connecting shaft, that is, it does not need to contact with other parts of the support frame, and in actual rotation, no friction loss will be generated between the roller and the support frame.

[0046] In one embodiment, a first side wall opening of the support frame for connecting with the accommodation portion is provided on the first side wall 32 of the support frame and / or a second side wall opening of the support frame for connecting with the accommodation portion is provided on the second side wall 33 of the support frame.

[0047] See also Figure 6 , Figure 7 In this embodiment, a second opening is provided on a portion of the support frame bottom plate 31 of the support frame.

[0048] This method can reduce the wear of the cylindrical rollers and the support frame while also reducing the weight.

[0049] See also Figures 8 to 9 ,like Figures 8 to 9 The permanent magnetic disc used for the permanent magnetic coupler in the illustrated embodiment comprises a permanent magnetic disc body 1, a roller 2 and a roller mounting shaft 5, wherein: At least two roller receiving grooves 4 are provided on the permanent magnetic disk body 1; The roller mounting shaft 5 is mounted in the roller receiving groove 4; An axial hole is provided in the middle of the roller 2, one roller 2 is located in one roller receiving groove 4, and the roller 2 is sleeved on the roller mounting shaft through the axial hole; During the operation of the permanent magnet coupler, when the permanent magnet disk for the permanent magnet coupler and the conductor disk of the permanent magnet coupler approach each other and contact each other, the conductor disk first contacts the roller and forms rolling friction with the roller after contact.

[0050] When the permanent magnetic disk for permanent magnetic coupler proposed by the present invention is used in the permanent magnetic coupler, since rollers are provided, during the process that the conductor rotor and the magnet rotor rotate relative to each other and approach each other, if the conductor rotor contacts the magnet rotor, it will also contact the rollers first. Since the disk rollers are cylindrical, rolling friction is formed between the two.

[0051] Specifically, after the conductor disc contacts the roller, since the conductor disc keeps rotating, it will not stop rotating even after contacting the roller. At this time, the conductor disc contacts the roller and drives the roller to rotate, thereby forming rolling friction between the conductor disc and the roller.

[0052] In this embodiment, when in use, one side of the permanent magnetic disk body is opposite to the conductor disk, and this side is called the first side 11 of the permanent magnetic disk body. A plurality of permanent magnet receiving grooves and the roller receiving groove are provided on the first side 11 of the permanent magnetic disk body. The permanent magnet disk for the permanent magnet coupler further includes a permanent magnet received in the permanent magnet receiving groove.

[0053] See also Figure 1 In this embodiment, the first side 11 of the permanent magnetic disk body of the permanent magnetic disk body is recessed toward the other side to form the roller accommodating groove 4, and the minimum vertical distance between the center axis of the roller and the first side 11 of the permanent magnetic disk body is less than the radius of the roller.

[0054] In this way, when the permanent magnet disk and the conductor disk of the permanent magnet coupler approach each other and contact each other, it can be ensured that the conductor disk first contacts the roller instead of contacting other parts of the permanent magnet disk body.

[0055] In this embodiment, the central axis of the roller is perpendicular to the central axis of the permanent magnet disk body.

[0056] In this way, it can be ensured that when rolling friction is generated, the friction force between the roller and the conductor disk will not generate component forces in other directions when the roller rolls.

[0057] See also Fig. 9 In this embodiment, the roller receiving groove 4 includes a receiving groove bottom 41, a first side wall 42, a second side wall 43, a first end wall 44 and a second end wall 45.

[0058] In this embodiment, a bolt hole is provided on the first end wall 44 of the accommodating groove, and one end of the roller mounting shaft of the present application is detachably mounted on the bolt hole.

[0059] In this way, the roller mounting shaft can be removed when the roller mounting shaft is no longer needed.

[0060] In the present embodiment, the roller is cylindrical. This structure results in that when the cylindrical outer surface of the roller of the present application contacts the conductor rotor during rotation, the rotation direction of the conductor rotor can be limited without providing forces in other directions to the conductor rotor (for example, if it is spherical, once a component force in other directions occurs, the spherical roller may instead provide the conductor rotor with a force that may cause the conductor rotor to be misaligned).

[0061] In this embodiment, the roller receiving groove and the permanent magnet receiving groove have the same structure. In this way, each permanent magnet receiving groove can be used to place a permanent magnet and also to install a roller shaft, and can be arranged and placed according to the position of the support frame and the permanent magnet.

[0062] In this embodiment, a lubricating oil circuit is provided inside the roller mounting shaft, and a lubricating oil outlet and a lubricating oil inlet communicating with the lubricating oil circuit are provided on the outer surface of the roller mounting shaft.

[0063] In this way, the roller mounting shaft and the rollers can be lubricated by lubricating oil, so that the friction between the rollers and the roller mounting shaft is reduced as much as possible when the rollers roll.

[0064] See also Figure 8 In this embodiment, the number of roller mounting shafts is 4, which are evenly distributed on the permanent magnetic disk. This ensures that when the conductor disk and the magnetic disk are in relative contact and friction, each position can be guaranteed to transmit force through the roller of the present application, and the force on the magnetic disk is more uniform.

[0065] In one embodiment, removable retaining rings are provided on both ends of the roller mounting shaft 5, and the roller 2 is provided between the two retaining rings and is limited by the two retaining rings; There is no contact between the roller 2 and the roller receiving groove 4.

[0066] In this way, the roller 2 only has friction with the roller mounting shaft 5, but does not have relative friction with the roller receiving groove 4, thereby preventing the roller receiving groove 4 from being worn.

[0067] In the embodiment provided with a pressure sensor, the tilt angle information of the conductor disk relative to the magnet disk when the conductor disk contacts at least one of the rollers 2 can also be obtained in the following manner: ;in, , ;in, P i : The reading of the pressure sensor on the i-th roller; θ: the inclination angle of the conductor disk relative to the virtual plane formed by each roller, the virtual plane being parallel to the plane of the side of the magnet disk where the rollers are provided; (x i ,y i ): Coordinates of the ith roller on the virtual plane.

[0068] For example, see Figure 1, assuming that there are four rollers evenly distributed on the plane of the magnetic disk, located at 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock respectively, that is, Figure 1 There is one roller in each of the top, bottom, left and right. The radius of each roller is r = 10mm.

[0069] In this embodiment, the radius of the magnet disk is large enough so that the distribution of the rollers can be approximately regarded as being on a plane.

[0070] The roller pressure sensor readings are as follows (unit: N): P 12点 =20,P 3点 =15,P 6点 =10,P 9点 =5; where P 12点 Indicates the roller at 12 o'clock, P 3点 Indicates the roller at 3 o'clock, P 6点 Indicates the roller at 6 o'clock, P 9点 Indicates the roller at 9 o'clock.

[0071] Assume that the center of the magnetic disk is the origin, the 12 o'clock direction is the positive direction of the y-axis, and the 3 o'clock direction is the positive direction of the x-axis, and establish a rectangular coordinate system.

[0072] The coordinates of the four rollers are: (0,R),(R,0), , ; where R is a sufficiently large value for the radius of the magnet disk and can be ignored since we are only concerned with relative positions.

[0073] The coordinates of the center of pressure are calculated using the following formula : ; Use the following formula to calculate the tilt angle θ (relative to the 12 o'clock direction, that is, the positive direction of the y-axis): ; It can be understood that what is calculated here is the tilt angle relative to the positive direction of the y-axis. If the tilt angle relative to other directions is required, corresponding conversion may be required; ; .

[0074] The present application also provides a permanent magnet coupler for use, wherein the permanent magnet coupler for use comprises the permanent magnet disk for use in the permanent magnet coupler as described above.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A permanent magnet magnet for a permanent magnet coupler, characterized in that: The permanent magnet disk for the permanent magnet coupler comprises: A permanent magnetic disk body (1), wherein the permanent magnetic disk body (1) is provided with at least two roller receiving grooves (4); A roller (2), wherein a roller (2) is located in a roller receiving groove (4); wherein: During the operation of the permanent magnetic coupler, when the permanent magnetic disc of the permanent magnetic coupler and the conductor disc of the permanent magnetic coupler approach each other until they come into contact, the conductor disc first contacts the roller (2).

2. The permanent magnet disk for permanent magnet coupler according to claim 1, characterized in that: When in use, one side of the permanent magnetic disk body (1) is opposite to the conductor disk, and this side is referred to as the first side (11) of the permanent magnetic disk body. The first side (11) of the permanent magnetic disk body is provided with a plurality of permanent magnet receiving grooves and the roller receiving groove (4). The permanent magnet disk for a permanent magnet coupler further includes a permanent magnet, and the permanent magnet is accommodated in the permanent magnet accommodating groove.

3. The permanent magnet disk for permanent magnet coupler according to claim 2, characterized in that: The first side (11) of the permanent magnetic disk body of the permanent magnetic disk body is recessed toward the other side to form the roller accommodating groove (4), and the minimum vertical distance between the central axis of the roller (2) and the first side (11) of the permanent magnetic disk body is less than the radius of the roller (2).

4. The permanent magnet disk for a permanent magnet coupler according to claim 1, characterized in that: The permanent magnet disk for the permanent magnet coupler further comprises: A roller mounting shaft (5), wherein the roller mounting shaft (5) is mounted in the roller receiving groove (4); An axial hole is provided in the middle of the roller (2); one roller (2) is located in a roller receiving groove (4), and the roller (2) is sleeved on the roller mounting shaft (5) through the axial hole.

5. The permanent magnetic disk for a permanent magnetic coupler according to claim 2 or 3, characterized in that: The permanent magnet disk for the permanent magnet coupler further comprises: A support frame (3), wherein the support frame (3) is arranged in the roller receiving groove (4), and the roller (2) is arranged in the support frame (3).

6. The permanent magnet disk for a permanent magnet coupler according to claim 5, characterized in that: The roller accommodating groove (4) and the permanent magnet accommodating groove have the same structure.

7. The permanent magnet disk for a permanent magnet coupler according to claim 6, characterized in that: A first opening (371) is provided on one end of the support frame (3), and the first opening (371) is used for allowing the roller (2) to enter the support frame (3) through the first opening.

8. The permanent magnet disk for a permanent magnet coupler according to claim 7, characterized in that: The permanent magnet disk for the permanent magnet coupler further comprises a pressure sensor, which is arranged on the outer surface of the roller (2).

9. The permanent magnetic disk for a permanent magnetic coupler according to claim 8, characterized in that: When the conductor disk contacts at least one of the rollers (2), the inclination angle information of the conductor disk is obtained by the following formula: ;in, , ;in, P i : The reading of the pressure sensor on the i-th roller; θ: the inclination angle of the conductor disk relative to the virtual plane formed by each roller, the virtual plane being parallel to the plane of the side of the magnet disk where the rollers are provided; (x i ,y i ): Coordinates of the ith roller on the virtual plane.

10. A permanent magnetic coupler, characterized in that: The permanent magnetic coupler comprises the permanent magnetic disk for a permanent magnetic coupler according to any one of claims 1 to 9.

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