Sleeve type permanent magnet coupler

Abstract

The utility model discloses a sleeve type permanent magnet coupler, which comprises a mounting seat, a driving motor, a load, a coupler unit, a permanent magnet unit, a permanent magnet unit, a permanent magnet unit, a permanent magnet unit and a permanent magnet unit, wherein the driving motor and the load are sequentially mounted at the upper end of the mounting seat; and one end of the driving motor is connected with a first flange plate and one end of the load is connected with a second flange plate. Comprising a coupling assembly which is arranged between the driving motor and a load and is used for connecting the driving motor with the load, and a positioning assembly which is arranged in the coupling assembly and is used for coaxially positioning the interior of the coupling assembly; and a compensation unit. A first guide shaft is driven by a first square block to move along a first round guide groove, one end of the first guide shaft is inserted into a round clamping groove, one end of the first square block is inserted into a square clamping groove, and when a boss drives a clamping shaft to move to correspond to a second positioning hole in the moving process, the clamping shaft is clamped in the clamping groove under the elastic force effect of a jacking spring. And the clamping shaft is jacked into the second positioning hole, so that the positioning of the first guide shaft and the first square block is completed, and the mounting error is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnetic couplings, in particular to a sleeve type permanent magnetic coupling. Background Art

[0002] The sleeve permanent magnet coupling is a kind of coupling that uses the magnetic force between permanent magnets to achieve power transmission without direct mechanical connection. This coupling is mainly composed of an outer rotor, an inner rotor and an isolation sleeve. Due to its unique working principle, the permanent magnet coupling can solve the leakage problem of dynamic seals in some traditional mechanical devices. Therefore, it has been widely used in sealed transmission machinery in chemical, electroplating, papermaking, pharmaceutical, food, vacuum and other industries. Permanent magnet couplings are suitable for occasions that require stable torque transmission, and have the advantages of energy saving and vibration reduction. They can replace traditional couplings and have no special requirements for installation space.

[0003] However, during the installation process of the sleeve-type permanent magnet coupling in the prior art, since the permanent magnet coupling assembles the inner rotor and the outer rotor separately in the sleeve, it is difficult to ensure that the sleeve for carrying the inner rotor and the sleeve for carrying the outer rotor remain on the same axis when assembling the inner rotor and the outer rotor in the sleeve in the prior art. The installation error is large, resulting in severe vibration during subsequent operation, shortening the service life of the permanent magnet coupling. In addition, during the installation of the existing permanent magnet coupling, since the installation positions of the drive source and the load are usually fixed, when installing the permanent magnet coupling, it is inevitable that there is a large axial gap value between the permanent magnet coupling and the drive source or the load, resulting in poor axial compensation capability, further reducing the installation accuracy of the permanent magnet coupling.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a sleeve-type permanent magnet coupling to solve the problem that in the prior art proposed in the above background technology, when the inner rotor and the outer rotor are assembled in the sleeve, it is difficult to ensure that the sleeve used to carry the inner rotor and the sleeve carrying the outer rotor remain on the same axis, resulting in a large installation error. In addition, since the installation positions of the drive source and the load are usually fixed, when installing the permanent magnet coupling, it is difficult to avoid the presence of a large axial gap value between the permanent magnet coupling and the drive source or the load, resulting in poor axial compensation capability, further reducing the installation accuracy of the permanent magnet coupling.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sleeve-type permanent magnetic coupling, comprising a mounting seat, a drive motor and a load sequentially mounted on the upper end of the mounting seat, wherein one end of the drive motor is connected to a first flange, and one end of the load is connected to a second flange, and further comprising:

[0008] The coupling unit comprises a coupling assembly disposed between the driving motor and the load for connecting the driving motor and the load, and a positioning assembly disposed inside the coupling assembly for coaxially positioning the inside of the coupling assembly;

[0009] The compensation unit is arranged between the coupling assembly and the load, and is used to compensate for the axial length of the coupling assembly.

[0010] Furthermore, the coupling assembly comprises:

[0011] A first sleeve, wherein a plurality of groups of outer rotors are connected to the inner wall of the first sleeve at equal angles;

[0012] A first rotating shaft, fixedly connected to one end of the first sleeve;

[0013] a second flange, one end of which is connected to the first rotating shaft, and the other end of which is connected to the first flange;

[0014] A rotating disk, disposed at the opening of the first sleeve;

[0015] A second sleeve, fixedly connected to one end of the rotating disk and located inside the first sleeve, a plurality of sets of inner rotors are arranged outside the second sleeve, and the inner rotors correspond to the outer rotors one by one;

[0016] A second rotating shaft is fixedly connected to one end of the rotating disk opposite to the second sleeve.

[0017] Furthermore, the positioning component includes:

[0018] A first guide shaft is slidably inserted in the second rotating shaft, and a first circular guide groove is provided in the second rotating shaft for guiding the movement of the first guide shaft;

[0019] The first square blocks are provided in four groups and connected at equal angles to the outside of the first guide shaft. A first square guide groove for guiding the movement of the first square blocks is provided inside the second rotating shaft and outside the first square blocks. The first circular guide groove and the first square guide groove both penetrate the inside of the rotating disk.

[0020] The clamping mechanism is provided with two groups, which are respectively arranged on the outer sides of the first blocks which are relatively distributed.

[0021] Furthermore, a circular groove coaxial with the first circular guide groove is provided inside the first rotating shaft, and is used to accommodate the first guide shaft extending into the circular groove;

[0022] A square slot corresponding to the first square block is provided inside the first rotating shaft for accommodating the first protruding block extending into the square slot;

[0023] The circular clamping groove and the square clamping groove both penetrate through the interior of the first sleeve.

[0024] Furthermore, the clamping mechanism comprises:

[0025] A push block is fixedly connected to one end of the first block, and a through groove is provided inside the rotating shaft for guiding the movement of the push block;

[0026] A boss connected to one end of the push block and located outside the rotating shaft, wherein a receiving hole is provided inside the boss;

[0027] A clamping shaft, slidably inserted into the receiving hole;

[0028] A tightening spring, connected to one end of the clamping shaft and located inside the receiving hole, for tightening the clamping shaft;

[0029] An adjusting rod is connected to the outside of the clamping shaft and extends from the inside of the accommodating hole to the outside of the boss. A groove for guiding the movement of the adjusting rod is provided inside the boss and located on the outside of the adjusting rod.

[0030] Furthermore, a first positioning hole and a second positioning hole are sequentially provided inside the second rotating shaft and on one side of the through slot;

[0031] The first positioning hole is used to position the clamping shaft when the first guide shaft moves out of the circular clamping groove;

[0032] The second positioning hole is used to position the clamping shaft when the first guide shaft is inserted into the circular clamping groove.

[0033] Furthermore, the compensation unit includes:

[0034] A third sleeve, fixedly connected to one end of the second rotating shaft;

[0035] A second guide shaft is slidably inserted in the third sleeve, and a second circular guide groove is provided in the third sleeve for guiding the movement of the second guide shaft;

[0036] The second blocks are provided in four groups and connected at equal angles to the outside of the second guide shaft. A second guide groove for guiding the movement of the second blocks is provided outside the second blocks and inside the third sleeve;

[0037] A telescopic shaft connected to one end of the second guide shaft and extending from the inside of the third sleeve to the outside;

[0038] A third flange is connected to one end of the telescopic shaft opposite to the second guide shaft, and is used to connect the telescopic shaft to a fourth flange.

[0039] Furthermore, a plurality of groups of threaded holes are formed at equal intervals through the outer side of the third sleeve, and a plurality of groups of third positioning holes are formed at equal intervals on the upper end of a second block corresponding to the threaded holes;

[0040] The threaded hole is internally threaded with a screw for positioning the second block.

[0041] Furthermore, the spacing of the third positioning holes is smaller than the spacing of the threaded holes;

[0042] The diameter of the third positioning hole is equal to the diameter of the threaded hole.

[0043] Compared with the prior art, the beneficial effects of the utility model are:

[0044] 1. The utility model drives the first guide shaft to move along the first circular guide groove through the first square block, so that one end of the first guide shaft is inserted into the circular groove and one end of the first square block is inserted into the square groove, until the boss drives the card shaft to move to correspond to the second positioning hole during the movement, and stops pushing the boss. At this time, under the elastic force of the tightening spring, the card shaft is pushed into the second positioning hole to complete the positioning of the first guide shaft and the first square block. Therefore, during the subsequent installation of the coupling assembly, the first sleeve and the second sleeve are always on the same axis under the action of the first guide shaft, which greatly reduces the installation error.

[0045] 2. The utility model pulls the third flange, and the third flange drives the second guide shaft to move along the second circular guide groove through the telescopic shaft, and the second guide shaft drives the second block to move along the second square guide groove until the third flange is close to the fourth flange, and then stops pulling the third flange. At this time, the screw is screwed into the third positioning hole through the threaded hole to position the second guide shaft, and then the third flange and the fourth flange are connected with bolts, so that the larger axial spacing in the installation process can be quickly compensated, and the compensation ability is strong.

[0046] 3. When the utility model is close to the fourth flange through the third flange, the screw can be screwed into the threaded hole on the same axis as the third positioning hole to avoid the screw being unable to be inserted into the third positioning hole after the threaded hole is inserted due to the misalignment of the threaded hole and the third positioning hole after the axial spacing compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0048] Figure 2This is a schematic diagram of the internal structure of the coupling unit and the compensation unit of the utility model;

[0049] Figure 3 For the utility model Figure 2 The enlarged view of point A in the middle;

[0050] Figure 4 For the utility model Figure 2 The enlarged view of point B in the middle;

[0051] Figure 5 This is a diagram showing the matching relationship between the second rotating shaft and the positioning assembly of the utility model;

[0052] Figure 6 This is a diagram showing the matching relationship between the inner rotor and the outer rotor of the utility model;

[0053] Figure 7 This is a schematic diagram of the structure of the positioning component of the utility model;

[0054] Figure 8 For the utility model Figure 7 Enlarged view of point C in the middle;

[0055] Fig. 9 This is a diagram showing the matching relationship between the clamping assembly and the second rotating shaft of the utility model;

[0056] Fig.10 This is a schematic diagram of the internal structure of the third sleeve of the utility model.

[0057] Reference numerals: 100, mounting seat; 101, driving motor; 1011, first flange; 102, load; 1, coupling unit; 11, coupling assembly; 111, first sleeve; 112, outer rotor; 113, first rotating shaft; 1131, round slot; 1132, square slot; 114, second flange; 115, rotating disk; 116, second sleeve; 117, inner rotor; 118, second rotating shaft; 1181, first round guide groove; 1182, first square guide groove; 1183, through groove; 1184, first positioning hole; 1185, second positioning hole; 12 , positioning assembly; 121, first guide shaft; 122, first square; 1221, guide surface; 123, clamping mechanism; 1231, push block; 1232, boss; 1233, accommodating hole; 1234, clamping shaft; 1235, tightening spring; 1236, adjusting rod; 2, compensation unit; 21, third sleeve; 211, threaded hole; 212, second circular guide groove; 213, second square guide groove; 22, screw; 23, second guide shaft; 231, second square; 232, third positioning hole; 24, telescopic shaft; 241, third flange; 1021, fourth flange. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0059] See also Figure 1-10 , the utility model provides a technical solution:

[0060] A sleeve type permanent magnet coupling, comprising a mounting seat 100, a drive motor 101 and a load 102 sequentially mounted on the upper end of the mounting seat 100, wherein one end of the drive motor 101 is connected to a first flange 1011, and one end of the load 102 is connected to a second flange 114, and further comprising:

[0061] The coupling unit 1 comprises a coupling assembly 11 disposed between the drive motor 101 and the load 102 for connecting the drive motor 101 and the load 102, and a positioning assembly 12 disposed inside the coupling assembly 11 for coaxially positioning the inside of the coupling assembly 11;

[0062] The compensation unit 2 is disposed between the coupling assembly 11 and the load 102 and is used to compensate for the axial length of the coupling assembly 11 .

[0063] As an improvement, the coupling assembly 11 comprises:

[0064] A first sleeve 111, wherein a plurality of groups of outer rotors 112 are connected to the inner wall of the first sleeve 111 at equal angles;

[0065] A first rotating shaft 113, fixedly connected to one end of the first sleeve 111;

[0066] A second flange 114, one end of which is connected to the first rotating shaft 113, and the other end of which is connected to the first flange 1011;

[0067] A rotating disk 115 is disposed at the opening of the first sleeve 111;

[0068] A second sleeve 116 is fixedly connected to one end of the rotating disk 115 and is located inside the first sleeve 111. A plurality of sets of inner rotors 117 are provided outside the second sleeve 116. The inner rotors 117 correspond to the outer rotors 112 one by one.

[0069] The second rotating shaft 118 is fixedly connected to one end of the rotating disk 115 opposite to the second sleeve 116 .

[0070] Furthermore, the positioning component 12 includes:

[0071] The first guide shaft 121 is slidably inserted in the second rotating shaft 118, and the second rotating shaft 118 is provided with a first circular guide groove 1181 for guiding the movement of the first guide shaft 121;

[0072] The first square blocks 122 are provided in four groups and are connected at equal angles to the outside of the first guide shaft 121. The first square guide groove 1182 for guiding the movement of the first square blocks 122 is provided inside the second rotating shaft 118 and outside the first square blocks 122. The first circular guide groove 1181 and the first square guide groove 1182 both penetrate the inside of the rotating disk 115.

[0073] The clamping mechanism 123 is provided with two groups, which are respectively arranged on the outer sides of the first blocks 122 which are relatively distributed.

[0074] Preferably, a guide surface 1221 is provided at one end of the first block 122 facing the square slot 1132 to facilitate the first block 122 to be inserted into the square slot 1132 .

[0075] Furthermore, a circular groove 1131 coaxial with the first circular guide groove 1181 is provided inside the first rotating shaft 113, and is used to accommodate the first guide shaft 121 extending into the circular groove 1131;

[0076] A square slot 1132 corresponding to the first block 122 is provided inside the first rotating shaft 113, and is used to accommodate the first protruding block extending into the square slot 1132;

[0077] The circular slot 1131 and the square slot 1132 both penetrate through the first sleeve 111 .

[0078] As an improvement, the clamping mechanism 123 includes:

[0079] The push block 1231 is fixedly connected to one end of the first block 122, and a through slot 1183 is provided inside the rotating shaft for guiding the movement of the push block 1231.

[0080] A boss 1232 connected to one end of the push block 1231 and located outside the rotating shaft, and a receiving hole 1233 is provided inside the boss 1232;

[0081] The clamping shaft 1234 is slidably inserted into the receiving hole 1233;

[0082] A tightening spring 1235, connected to one end of the clamping shaft 1234 and located inside the receiving hole 1233, for tightening the clamping shaft 1234;

[0083] The adjusting rod 1236 is connected to the outside of the clamping shaft 1234 and extends from the inside of the accommodating hole 1233 to the outside of the boss 1232. A groove for guiding the movement of the adjusting rod 1236 is provided inside the boss 1232 and located on the outside of the adjusting rod 1236.

[0084] Furthermore, a first positioning hole 1184 and a second positioning hole 1185 are sequentially provided inside the second rotating shaft 118 and on one side of the through slot 1183;

[0085] The first positioning hole 1184 is used to position the clamping shaft 1234 when the first guide shaft 121 moves out of the circular clamping groove 1131;

[0086] The second positioning hole 1185 is used to position the clamping shaft 1234 when the first guide shaft 121 is inserted into the circular clamping groove 1131 .

[0087] It should be noted that: initially, the first guide shaft 121 is completely located inside the first circular guide groove 1181, the first block 122 is completely located inside the first square guide groove 1182, and the clamping shaft 1234 is inserted into the first positioning hole 1184. In the process of assembling the inner rotor 117 and the outer rotor 112, the second sleeve 116 is first inserted into the first sleeve 111, so that the inner rotor 117 corresponds to the outer rotor 112 and the turntable 115 is located at the opening of the first sleeve 111, and then the adjusting rod 1236 is pulled, and the adjusting rod 1236 drives the clamping shaft 1234 to compress the tensioning spring 1235 and move out of the first positioning hole 1184, and then the boss 1232 is pushed along the through groove 1183, and the boss 1232 drives the first block 122 along the first square guide groove through the push block 1231. The groove 1182 moves, and the first block 122 drives the first guide shaft 121 to move along the first circular guide groove 1181, so that one end of the first guide shaft 121 is inserted into the circular card groove 1131 and one end of the first block 122 is inserted into the square card groove 1132, until the boss 1232 in the moving process drives the card shaft 1234 to move to correspond to the second positioning hole 1185, and then stops pushing the boss 1232. At this time, under the elastic force of the tightening spring 1235, the card shaft 1234 is pushed into the second positioning hole 1185, completing the positioning of the first guide shaft 121 and the first block 122, so that in the subsequent installation process of the coupling assembly 11, the first sleeve 111 and the second sleeve 116 are always on the same axis under the action of the first guide shaft 121, which greatly reduces the installation error;

[0088] In addition, the utility model sets the first block 122 on the outside of the first guide shaft 121 to ensure that during the installation of the coupling assembly 11, the first rotating shaft 113 and the second rotating shaft 118 are circumferentially limited by the first block 122, thereby avoiding relative rotation between the first rotating shaft 113 and the second rotating shaft 118 during the installation process, which would cause interference to the installation process, thereby further improving the installation accuracy.

[0089] As an improvement, the compensation unit 2 comprises:

[0090] A third sleeve 21, fixedly connected to one end of the second rotating shaft 118;

[0091] The second guide shaft 23 is slidably inserted in the third sleeve 21. The third sleeve 21 is provided with a second circular guide groove 212 for guiding the movement of the second guide shaft 23.

[0092] The second blocks 231 are provided in four groups and connected at equal angles to the outside of the second guide shaft 23. The second guide grooves 213 for guiding the movement of the second blocks 231 are provided outside the second blocks 231 and inside the third sleeve 21.

[0093] A telescopic shaft 24, connected to one end of the second guide shaft 23 and extending from the inside of the third sleeve 21 to the outside;

[0094] The third flange 241 is connected to one end of the telescopic shaft 24 opposite to the second guide shaft 23 , and is used to connect the telescopic shaft 24 to the fourth flange 1021 .

[0095] Furthermore, a plurality of threaded holes 211 are formed at equal intervals on the outer side of the third sleeve 21, and a plurality of third positioning holes 232 are formed at equal intervals on the upper end of a second block 231 corresponding to the threaded hole 211;

[0096] The threaded hole 211 is internally threadedly connected with a screw 22 for positioning the second block 231 , and the screw 22 is externally provided with a thread matched with the threaded hole 211 .

[0097] Furthermore, the spacing of the third positioning holes 232 is smaller than the spacing of the threaded holes 211;

[0098] The diameter of the third positioning hole 232 is equal to the diameter of the threaded hole 211 .

[0099] It should be noted that: after the inner rotor 117 and the outer rotor 112 are assembled, the second flange 114 is connected to the first flange 1011 by bolts. At this time, the third flange 241 and the fourth flange 1021 have a large axial spacing, which makes it difficult to connect. Therefore, the present invention sets a compensation unit 2. When the third flange 241 and the fourth flange 1021 have a large axial spacing, which makes it difficult to connect, the third flange 241 is pulled, and the third flange 241 is connected to the first flange 1011 by the telescopic shaft 241. The second guide shaft 23 is driven to move along the second circular guide groove 212, and the second guide shaft 23 drives the second block 231 to move along the second square guide groove 213 until the third flange 241 is close to the fourth flange 1021, and the third flange 241 is stopped from being pulled. At this time, the screw 22 is screwed into the third positioning hole 232 through the threaded hole 211, so that the second guide shaft 23 is positioned, and then the third flange 241 and the fourth flange 1021 are connected by bolts, so that the large axial spacing in the installation process can be quickly compensated, and the compensation ability is strong;

[0100] The spacing of the third positioning holes 232 in the utility model is smaller than the spacing of the threaded holes 211. This design can ensure that when the third flange 241 is close to the fourth flange 1021, the screw 22 can be screwed into the threaded hole 211 on the same axis as the third positioning hole 232, thereby avoiding the situation in which the screw 22 cannot be inserted into the third positioning hole 232 after passing through the threaded hole 211 due to the misalignment of the threaded hole 211 and the third positioning hole 232 after axial spacing compensation.

[0101] When the coupling assembly 11 is installed, the clamping shaft 1234 is pulled out from the second positioning hole 1185, and the boss 1232 is pushed, so that the first block 122 disengages from the square clamping groove 1132 and the first guide shaft 121 disengages from the circular clamping groove 1131 and returns to the initial position, and then, the tightening spring 1235 pushes the clamping shaft 1234 into the first positioning hole 1184 to complete the entire installation process.

[0102] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0103] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeve-type permanent magnet coupling, comprising a mounting seat (100), a drive motor (101) and a load (102) mounted on the upper end of the mounting seat (100) in sequence, wherein one end of the drive motor (101) is connected to a first flange (1011), and one end of the load (102) is connected to a second flange (114), characterized in that: Also includes: A coupling unit (1) comprises a coupling assembly (11) disposed between the drive motor (101) and the load (102) for connecting the drive motor (101) and the load (102), and a positioning assembly (12) disposed inside the coupling assembly (11) for coaxially positioning the inside of the coupling assembly (11); The compensation unit (2) is arranged between the coupling assembly (11) and the load (102) and is used to compensate for the axial length of the coupling assembly (11).

2. A sleeve-type permanent magnetic coupling according to claim 1, characterized in that: The coupling assembly (11) comprises: A first sleeve (111), wherein a plurality of groups of outer rotors (112) are connected at equal angles to an inner wall of the first sleeve (111); A first rotating shaft (113) fixedly connected to one end of the first sleeve (111); A second flange (114), one end of which is connected to the first rotating shaft (113), and the other end of which is connected to the first flange (1011); A rotating disk (115) is disposed at the opening of the first sleeve (111); A second sleeve (116) is fixedly connected to one end of the rotating disk (115) and is located inside the first sleeve (111); a plurality of sets of inner rotors (117) are provided outside the second sleeve (116); the inner rotors (117) correspond one to one with the outer rotors (112); The second rotating shaft (118) is fixedly connected to one end of the rotating disk (115) opposite to the second sleeve (116).

3. A sleeve-type permanent magnetic coupling according to claim 2, characterized in that: The positioning component (12) comprises: A first guide shaft (121) is slidably inserted into the second rotating shaft (118), and a first circular guide groove (1181) is provided inside the second rotating shaft (118) for guiding the movement of the first guide shaft (121); The first square block (122) is provided with four groups and connected at equal angles to the outside of the first guide shaft (121); a first square guide groove (1182) for guiding the movement of the first square block (122) is provided inside the second rotating shaft (118) and located outside the first square block (122); the first circular guide groove (1181) and the first square guide groove (1182) both penetrate the inside of the rotating disk (115); The clamping mechanism (123) is provided with two groups, which are respectively arranged on the outer sides of the first blocks (122) which are relatively distributed.

4. A sleeve-type permanent magnetic coupling according to claim 3, characterized in that: A circular clamping groove (1131) coaxial with the first circular guide groove (1181) is provided inside the first rotating shaft (113) and is used to accommodate the first guide shaft (121) extending into the circular clamping groove (1131); A square slot (1132) corresponding to the first square block (122) is provided inside the first rotating shaft (113) and is used to accommodate the first protruding block extending into the square slot (1132); The circular clamping groove (1131) and the square clamping groove (1132) both penetrate the interior of the first sleeve (111).

5. The sleeve-type permanent magnetic coupling according to claim 3, characterized in that: The clamping mechanism (123) comprises: A push block (1231) is fixedly connected to one end of the first block (122), and a through groove (1183) is provided inside the rotating shaft for guiding the movement of the push block (1231); A boss (1232) is connected to one end of the push block (1231) and is located outside the rotating shaft, and a receiving hole (1233) is provided inside the boss (1232); A clamping shaft (1234) is slidably inserted into the receiving hole (1233); A tightening spring (1235), connected to one end of the clamping shaft (1234) and located inside the receiving hole (1233), and used for tightening the clamping shaft (1234); An adjusting rod (1236) is connected to the outside of the clamping shaft (1234) and extends from the inside of the accommodating hole (1233) to the outside of the boss (1232). A groove for guiding the movement of the adjusting rod (1236) is provided inside the boss (1232) and located on the outside of the adjusting rod (1236).

6. A sleeve-type permanent magnetic coupling according to claim 5, characterized in that: A first positioning hole (1184) and a second positioning hole (1185) are sequentially provided inside the second rotating shaft (118) and on one side of the through slot (1183); The first positioning hole (1184) is used to position the clamping shaft (1234) when the first guide shaft (121) moves out of the circular clamping groove (1131); The second positioning hole (1185) is used to position the clamping shaft (1234) when the first guide shaft (121) is inserted into the circular clamping groove (1131).

7. A sleeve-type permanent magnetic coupling according to claim 2, characterized in that: The compensation unit (2) comprises: A third sleeve (21) fixedly connected to one end of the second rotating shaft (118); A second guide shaft (23) is slidably inserted into the third sleeve (21), and a second circular guide groove (212) is provided inside the third sleeve (21) for guiding the movement of the second guide shaft (23); The second blocks (231) are provided in four groups and are connected at equal angles to the outside of the second guide shaft (23); a second guide groove (213) for guiding the movement of the second blocks (231) is provided outside the second blocks (231) and inside the third sleeve (21); A telescopic shaft (24) connected to one end of the second guide shaft (23) and extending from the inside of the third sleeve (21) to the outside; The third flange (241) is connected to one end of the telescopic shaft (24) opposite to the second guide shaft (23), and is used to connect the telescopic shaft (24) to the fourth flange (1021).

8. A sleeve-type permanent magnetic coupling according to claim 7, characterized in that: A plurality of groups of threaded holes (211) are formed at equal intervals through the outer side of the third sleeve (21), and a plurality of groups of third positioning holes (232) are formed at equal intervals on the upper end of a second block (231) corresponding to the threaded hole (211); The threaded hole (211) is internally threaded with a screw (22) for positioning the second block (231).

9. A sleeve-type permanent magnetic coupling according to claim 8, characterized in that: The spacing between the third positioning holes (232) is smaller than the spacing between the threaded holes (211); The diameter of the third positioning hole (232) is equal to the diameter of the threaded hole (211).

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