Non-mechanical contact vibration isolation type permanent magnet coupler

Abstract

The utility model discloses a non-mechanical contact vibration isolation type permanent magnet coupling, which comprises a conductor rotor, a permanent magnet rotor and a magnetic ring adjusting mechanism, the conductor rotor is connected with a driving shaft, the permanent magnet rotor is connected with a load shaft, the magnetic ring adjusting mechanism is arranged in the permanent magnet rotor, and an air gap is formed between the permanent magnet rotor and the conductor rotor. And an air gap between the permanent magnet rotor and the conductor rotor can be controlled and adjusted through a magnetic ring adjusting mechanism. The advantages are that the first permanent magnet ring and the second permanent magnet ring arranged in the permanent magnet rotor are matched with the copper sleeve and the copper ring in the conductor rotor to realize power output, so that the conductor rotor can conveniently drive a load connected with the permanent magnet rotor to rotate; a first magnetic ring adjusting mechanism and a second magnetic ring adjusting mechanism which are arranged in the permanent magnet rotor are used for adjusting the distance between the first permanent magnet ring and a copper sleeve in the conductor rotor and the distance between the second permanent magnet ring and a copper ring in the conductor rotor respectively, air gap adjustment is achieved, the coupler is suitable for different loads and different working conditions, and the transmission efficiency and stability of the coupler are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of mechanical contact vibration isolation type permanent magnet coupling. BACKGROUND

[0002] Permanent magnet coupling is a new type of coupling that connects prime mover and working machine through the magnetic force of permanent magnet, which mainly utilizes the magnetic coupling between permanent magnets and the characteristics that magnetic field can penetrate a certain spatial distance and material to transfer mechanical energy. It can realize the transmission of force and torque between driving shaft and driven shaft without direct contact, convert dynamic seal into static seal and achieve zero leakage.

[0003] At the same time, the vibration existing in the process of motor driving is isolated by non-contact transmission, which ensures the stable operation of load end. The structure of magnetic connection of permanent magnet coupling can protect the transmission system from damage in overload condition, and is widely used in sealed transmission machinery in chemical industry, electroplating, papermaking, pharmaceutical industry, food industry and vacuum industry.

[0004] Currently, the traditional permanent magnet coupling on the market realizes power transmission through the magnetic force between permanent magnets. The size of air gap is fixed after manufacturing, but this design of fixed air gap has the following significant shortcomings:

[0005] 1. Poor adaptability: due to fixed air gap, the transmission efficiency and stability of the coupling are easily affected when facing different loads or changes in working environment, such as temperature fluctuations and small deformation of shafting.

[0006] 2. High maintenance cost: once the performance is reduced due to unsuitable air gap, the entire coupling needs to be disassembled and replaced, increasing the difficulty and cost of maintenance.

[0007] 3. Difficult to adjust: for application scenarios that require precise control of transmission characteristics, the fixed air gap design lacks flexibility and cannot meet the demand for dynamic adjustment.

[0008] Therefore, in view of the above problems, a permanent magnet coupling is needed that can adapt to different working conditions and load demand changes, and is easy to use and adjust. INVENTION CONTENTS

[0009] The technical problem to be solved by the utility model is the problem of inconvenient air gap adjustment of existing permanent magnet couplings mentioned in the background, which is not suitable for different working conditions and load demand change scenarios, and has poor transmission efficiency and stability.

[0010] To address the aforementioned technical problems, a non-mechanically contact vibration-isolated permanent magnet coupling is proposed. This is achieved through the following technical solution: A non-mechanically contact vibration-isolated permanent magnet coupling includes a conductor rotor, a permanent magnet rotor, and a magnetic ring adjustment mechanism. The conductor rotor is connected to the drive shaft, and the permanent magnet rotor is connected to the load shaft. The magnetic ring adjustment mechanism is disposed within the permanent magnet rotor. The permanent magnet rotor includes a first permanent magnet ring and a second permanent magnet ring, which are inserted into the conductor rotor, forming an air gap between them. The air gap between the first and second permanent magnet rings and the conductor rotor is controllably adjustable through the magnetic ring adjustment mechanism, thereby regulating torque and speed.

[0011] In a preferred embodiment of the present invention, the conductor rotor includes a conductor rotor base, a copper sleeve, and a copper ring. The conductor rotor base is connected to the drive shaft via a mounting bushing. The copper sleeve is disposed on the inner side of the conductor rotor base, and the copper ring is disposed on the bottom surface of the conductor rotor base. The arrangement of the copper sleeve and the copper ring facilitates the interaction with the first permanent magnet ring and the second permanent magnet ring to drive the load to rotate, thereby achieving power output and making it convenient to use.

[0012] In a preferred embodiment of the present invention, the permanent magnet rotor further includes a permanent magnet rotor base, with a first permanent magnet ring and a second permanent magnet ring movably disposed within the permanent magnet rotor base. The arrangement of the first and second permanent magnet rings facilitates their rotation in conjunction with the conductor rotor to achieve power output, making them convenient to use.

[0013] In a preferred embodiment of the present invention, the first permanent magnet ring includes a permanent magnet plate and a plate mounting base. The permanent magnet plate is disposed on the plate mounting base, and the plate mounting base is movably disposed on the permanent magnet rotor base. The plate mounting base is adjustable in radial position along the permanent magnet rotor base. This arrangement facilitates the adjustment of the air gap by adjusting the distance between the first permanent magnet ring and the copper sleeve in the conductor rotor, thereby adapting to different torques and ensuring the transmission efficiency and stability of the coupling.

[0014] In a preferred embodiment of the present invention, multiple sets of magnetic plate mounting seats are radially arranged on the permanent magnet rotor base. The multiple sets of magnetic plate mounting seats are evenly distributed on the permanent magnet rotor base, and the permanent magnet plates on the magnetic plate mounting seats correspond to the copper sleeves inside the conductor rotor. This arrangement facilitates the installation of multiple permanent magnet plates and improves the transmission efficiency of the coupling.

[0015] In a preferred embodiment of the present invention, the second permanent magnet ring includes a second magnet ring fixing plate and a second magnet ring fixing tube. The second magnet ring fixing plate is connected to the second magnet ring fixing tube, and the second magnet ring fixing tube is sleeved on the outside of the load shaft. The second magnet ring fixing tube is controllably adjustable along the axial direction of the load shaft. This arrangement increases the number of permanent magnet pieces and improves the transmission efficiency of the coupling.

[0016] In a preferred embodiment of the present invention, an adjustment indicator is provided at the end of the second magnetic ring fixing tube. The adjustment indicator indicates the distance the second magnetic ring fixing tube moves axially along the load axis. This arrangement facilitates accurate understanding of the adjustment distance of the second permanent magnet ring and improves the adjustment accuracy.

[0017] In a preferred embodiment of the present invention, the magnetic ring adjustment mechanism includes a first magnetic ring adjustment mechanism and a second magnetic ring adjustment mechanism. The first magnetic ring adjustment mechanism synchronously adjusts the distance between each permanent magnet piece on the first permanent magnet ring and the copper sleeve in the conductor rotor. The second magnetic ring adjustment mechanism adjusts the distance between the second permanent magnet ring and the copper ring in the conductor rotor. The magnetic ring adjustment mechanism facilitates the adjustment of the distance between the first and second permanent magnet rings and the conductor rotor, thereby adjusting the air gap and improving the transmission efficiency and stability of the coupling.

[0018] In a preferred embodiment of the present invention, the first magnetic ring adjustment mechanism includes an adjustment turntable, a moving block, and a slide rail. The adjustment turntable and the slide rail are disposed within the permanent magnet rotor base. The moving block is connected to the slide rail. A helical rack is provided on the adjustment turntable. The moving block, which is connected to the magnetic plate mounting base, cooperates with the helical rack. Rotating the adjustment turntable can drive the moving block to move along the slide rail, thereby adjusting the radial position of the moving block on the adjustment turntable. This arrangement facilitates the adjustment of the distance between the first permanent magnet ring and the conductor rotor, thereby adjusting the air gap and improving the transmission efficiency and stability of the coupling.

[0019] In a preferred embodiment of the present invention, the second magnetic ring adjustment mechanism includes an adjustment sleeve, an adjustment ring, and a second adjustment screw. The adjustment sleeve is mounted on the permanent magnet rotor base, and the adjustment ring is mounted on the second magnetic ring fixing tube within the second permanent magnet ring. The second adjustment screw is connected to the adjustment ring. Rotating the second adjustment screw adjusts the distance between the second permanent magnet ring and the copper ring in the conductor rotor. This arrangement facilitates the adjustment of the distance between the second permanent magnet ring and the conductor rotor, thereby adjusting the air gap and improving the transmission efficiency and stability of the coupling.

[0020] The advantages of this utility model compared with the prior art are:

[0021] The technical solution of this utility model utilizes the cooperation between the first and second permanent magnet rings set inside the permanent magnet rotor and the copper sleeve and copper ring in the conductor rotor to achieve power output, facilitating the conductor rotor to drive the load connected to the permanent magnet rotor to rotate. Furthermore, the first and second magnetic ring adjustment mechanisms set inside the permanent magnet rotor respectively adjust the distance between the first and second permanent magnet rings and the copper sleeve and copper ring in the conductor rotor, thereby adjusting the air gap. This allows for application to different loads and operating conditions, improving the transmission efficiency and stability of the coupling. In addition, the air gap can be adjusted without disassembling the entire coupling, greatly reducing maintenance difficulty and cost. Simultaneously, users can adjust the air gap at any time according to actual needs, meeting the requirements for precise control of transmission characteristics, improving the flexibility and efficiency of equipment use. Moreover, through precise adjustment of the air gap, transmission efficiency can be further optimized, energy loss reduced, and overall system performance improved. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 A three-dimensional schematic diagram of a conductor rotor;

[0024] Figure 3 Exploded view of the conductor rotor;

[0025] Figure 4 This is a three-dimensional schematic diagram of a permanent magnet rotor;

[0026] Figure 5 This is an exploded view of a permanent magnet rotor.

[0027] Figure 6 This is a three-dimensional schematic diagram of the first magnetic ring adjustment mechanism;

[0028] Figure 7 Exploded view of the first magnetic ring adjustment mechanism;

[0029] Figure 8 This is a three-dimensional schematic diagram of the second magnetic ring adjustment mechanism;

[0030] Figure 9 This is an exploded view of the present invention;

[0031] Explanation of reference numerals in the attached drawings: 1-Conductor rotor, 11-Conductor rotor base, 12-Copper sleeve, 13-Copper ring, 14-Copper sleeve mounting groove, 15-Copper ring mounting groove, 16-Limiting ring, 2-Permanent magnet rotor, 21-Permanent magnet rotor base, 22-Sealing plate, 23-Slide groove mounting ring, 24-Magnetic sheet mounting seat adjustment hole, 25-Slide groove mounting hole, 3-First permanent magnet ring, 31-Permanent magnet sheet, 32-Magnetic sheet mounting seat, 33-Magnetic sheet mounting groove, 4-Second permanent magnet ring, 41-Second permanent magnet ring fixing plate, 42-Second permanent magnet ring fixing tube, 43-Insertion strip, 4 4-Adjusting indicator, 5-First magnetic ring adjusting mechanism, 51-Adjusting turntable, 52-Moving block, 53-Slide rail, 54-Bevel gear, 55-Turntable mounting ring, 56-Helical rack, 57-Bevel gear, 58-Gate groove, 59-Slide groove, 510-First adjusting screw, 6-Second magnetic ring adjusting mechanism, 61-Adjusting bushing, 62-Adjusting ring, 63-Slot, 64-Second adjusting screw, 65-Adjusting guide screw, 7-Drive shaft, 71-Mounting bushing, 72-Flange, 73-Snap ring, 8-Load shaft, 81-Indicator slide groove. Detailed Implementation

[0032] The following will refer to the appendix in the embodiments of this utility model. Figures 1-9 The technical solutions in the embodiments of this utility model will be described in detail below. Example

[0033] like Figure 1 and 9 As shown, a non-mechanically contact vibration-isolated permanent magnet coupling includes a conductor rotor 1, a permanent magnet rotor 2, a first permanent magnet ring 3, a second permanent magnet ring 4, and a magnetic ring adjustment mechanism. The conductor rotor 1 is connected to the drive shaft 7 via a mounting sleeve 71, and the permanent magnet rotor 2 is connected to the load shaft 8 via the mounting sleeve 71. The first permanent magnet ring 3 and the second permanent magnet ring 4 are disposed inside the permanent magnet rotor 2, corresponding to the conductor rotor 1. The magnetic ring adjustment mechanism is disposed inside the permanent magnet rotor 2, and the air gap between the first permanent magnet ring 3 and the second permanent magnet ring 4 inside the permanent magnet rotor 2 and the conductor rotor 1 can be adjusted by the magnetic ring adjustment mechanism.

[0034] like Figure 1 , 2 As shown in Figure 3, the conductor rotor 1 includes a conductor rotor base 11, which is a metal cover with a circular cross-section. One end of the conductor rotor base 11 is open, and there is a mounting cavity inside the conductor rotor base 11 for mounting a copper sleeve 12 and a copper ring 13. The conductor rotor base 11 is fixed on the drive shaft 7 by a mounting bushing 71, and the drive shaft 7 can drive the conductor rotor base 11 to rotate as a whole.

[0035] To facilitate the rotation of the permanent magnet rotor 2, an annular groove is recessed on the arc-shaped inner side of the conductor rotor base 11. This groove is named the copper sleeve mounting groove 14. The copper sleeve 12 can be placed in the copper sleeve mounting groove 14. The copper sleeve 12 is an annular sleeve made of metallic copper. The inner diameter of the copper sleeve 12 is the same as the inner diameter of the conductor rotor 1, and the outer diameter of the copper sleeve 12 is the same as the inner diameter of the copper sleeve mounting groove 14.

[0036] On the inner side of the circular end face of the conductor rotor base 11, there is an annular groove perpendicular to the end face. This groove is named the copper ring mounting groove 15. The copper ring 13 is fixed in the copper ring mounting groove 15. The copper ring 13 can be fixed with screws or glue. The copper ring 13 and the copper sleeve 12 are the same and are both made of metal copper. The copper ring 13 and the copper sleeve 12 can form a magnetic induction with the first permanent magnet ring 3 and the second permanent magnet ring 4 in the permanent magnet rotor 2, so that when the conductor rotor 1 rotates, it drives the permanent magnet rotor 2 to rotate.

[0037] To facilitate the fixing of the copper sleeve 12, a limiting ring 16 is fixed to the open end face of the conductor rotor base 11 with screws. The limiting ring 16 is a circular metal ring made of stainless steel. The outer diameter of the limiting ring 16 is the same as the outer diameter of the conductor rotor base 11, and the inner diameter of the limiting ring 16 is the same as the inner diameter of the copper sleeve 12. A mounting hole is opened on the surface of the limiting ring 16. The limiting ring 16 is fixed to the open end face of the conductor rotor base 11 with screws, thereby fixing the copper sleeve 12.

[0038] Mounting bushing 71 is an existing two-half fixed bushing, including flange 72 and retaining ring 73. The retaining ring 73 is a semi-arc-shaped retainer. One end of the retaining ring 73 is welded to the flange 72. Two opposing retaining rings 73 are clamped on the drive shaft 7 and connected by screws. The flange 72 is fixed to the conductor rotor base 11 by screws. In use, the drive shaft 7 connected to the motor can drive the conductor rotor 1 connected to the mounting bushing 71 to move synchronously.

[0039] like Figure 4 , 5 As shown in Figure 9, the permanent magnet rotor 2 includes a permanent magnet rotor base 21, a first permanent magnet ring 3, and a second permanent magnet ring 4. The permanent magnet rotor base 21 is connected to the load shaft 8 through a mounting bushing 71. The first permanent magnet ring 3 and the second permanent magnet ring 4 are disposed inside the permanent magnet rotor base 21 and correspond to the copper sleeve 12 and the copper ring 13 inside the conductor rotor 1, respectively.

[0040] The permanent magnet rotor base 21 is the same as the conductor rotor base 11, both being circular metal covers made of metal material. The main function of the permanent magnet rotor base 21 is to serve as a carrier for mounting the first permanent magnet ring 3, the second permanent magnet ring 4, and the magnetic ring adjustment mechanism. One end of the permanent magnet rotor base 21 is open, and the open end is detachably sealed with screws using a circular sealing plate 22.

[0041] The first permanent magnet ring 3 includes a permanent magnet plate 31 and a magnet plate mounting base 32. The permanent magnet plate 31 is a neodymium magnet plate with a quarter-circular cross-section and is mounted on the magnet plate mounting base 32.

[0042] The magnetic plate mounting base 32 is a metal base with a rectangular cross-section. At one end of the magnetic plate mounting base 32, there is an arc-shaped block that protrudes outward perpendicular to the end face and fits against the permanent magnet plate 31. There is an arc-shaped groove in the surface of the arc-shaped block. This groove is named the magnetic plate mounting groove 33. The permanent magnet plate 31 is fixed in this magnetic plate mounting groove 33 by screws and glue.

[0043] There are four magnetic plate mounting seats 32, which are respectively set on the outer side of the front end of the permanent magnet rotor base 21 and evenly distributed along the front end face of the permanent magnet rotor base 21. The magnetic plate mounting seats 32 are connected to the slide rail 53 in the magnetic ring adjustment mechanism. The radial position of the magnetic plate mounting seats 32 on the permanent magnet rotor base 21 with permanent magnet 31 is adjustable by the magnetic ring adjustment mechanism, thereby realizing the adjustment of the air gap of the permanent magnet coupling.

[0044] Naming convention: In this embodiment, the closed opening on the permanent magnet rotor base 21 is the front end, and the open end that is closed by the sealing plate 22 is the rear end.

[0045] To facilitate the adjustment of the position of the magnetic plate mounting base 32, four through holes are uniformly opened along the axial direction perpendicular to the end face of the permanent magnet rotor base 21 on the front end face. These through holes are named magnetic plate mounting base adjustment holes 24. The end of the magnetic plate mounting base 32 near the magnetic plate mounting groove 33 passes through the magnetic plate mounting base adjustment hole 24 and is connected to the slide rail 53 set inside the permanent magnet rotor base 21. The magnetic plate mounting base 32 can move with the slide rail 53 to adjust the distance between the magnetic plate mounting base 32 and the center of the permanent magnet rotor base 21, thereby realizing the adjustment of the air gap between the first permanent magnet ring 3 and the copper sleeve 12.

[0046] The second permanent magnet ring 4 includes a second magnetic ring fixing plate 41 and a second magnetic ring fixing tube 42. The second magnetic ring fixing plate 41 is a circular metal plate, and a magnet is fixed on its surface. The second magnetic ring fixing tube 42 is a circular metal tube, which is connected to the second magnetic ring fixing plate 41 by screws. The second magnetic ring fixing tube 42 is coaxially fixed to the permanent magnet rotor base 21. Furthermore, to facilitate the rotation of the second magnetic ring fixing tube 42 with the permanent magnet rotor base 21, [the following text appears to be incomplete and requires further context: "in the permanent magnet rotor base 21..."] A circular through hole is provided at the center, and a circular adjusting sleeve 61 is welded inside the through hole. The second magnetic ring fixing tube 42 can be inserted into the adjusting sleeve 61. Four rectangular slots 63 are evenly provided on the inner wall of the adjusting sleeve 61. At the same time, four rectangular inserts 43 are also welded to the surface of the second magnetic ring fixing tube 42. The inserts 43 can cooperate with the slots 63. When the permanent magnet rotor base 21 rotates, it can drive the second magnetic ring fixing tube 42 to rotate synchronously, thereby driving the second permanent magnet ring 4 to rotate synchronously.

[0047] The second permanent magnet ring 4 corresponds to the copper ring 13. In order to adjust the air gap between the two, the second magnet ring fixing tube 42 can be moved controllably along the adjusting sleeve 61 in the axial direction, thereby adjusting the air gap between the two.

[0048] like Figure 5 , 6 As shown in Figures 7, 8, and 9, the magnetic ring adjustment mechanism includes a first magnetic ring adjustment mechanism 5 and a second magnetic ring adjustment mechanism 6. The main function of the first magnetic ring adjustment mechanism 5 is to adjust the air gap between the first permanent magnet ring 3 and the copper sleeve 12. The function of the second magnetic ring adjustment mechanism 6 is to adjust the air gap between the second permanent magnet ring 4 and the copper ring 13.

[0049] The first magnetic ring adjustment mechanism 5 includes an adjustment turntable 51, a moving block 52, a slide rail 53, and a slide groove 59.

[0050] The adjusting turntable 51 is a circular metal disc. A spiral rack is welded along the center of the circular end face on one side of the adjusting turntable 51. This rack is named the spiral rack 56. The moving block 52 is a metal block with a rectangular cross-section. A groove 58 that can cooperate with the spiral rack 56 is recessed in the rectangular surface of the moving block 52. After the spiral rack 56 cooperates with the groove 58, the rotation of the adjusting turntable 51 can drive the moving block 52 to move along the spiral rack 56. The magnetic plate mounting seat 32 is installed on the moving block 52. The distance between the moving block 52 and the center of the adjusting turntable 51 is adjusted, thereby realizing the adjustment of the air gap between the first permanent magnet ring 3 and the copper sleeve 12.

[0051] The adjusting turntable 51 is installed inside the permanent magnet rotor base 21. The outer diameter of the adjusting turntable 51 is slightly smaller than the inner diameter of the permanent magnet rotor base 21. In order to facilitate the installation of the adjusting turntable 51 into the permanent magnet rotor base 21, a turntable mounting ring 55 is fitted on the adjusting turntable 51. The cross-section of the turntable mounting ring 55 is "L" shaped. The outer diameter of the turntable mounting ring 55 is the same as the inner diameter of the permanent magnet rotor base 21. The two are connected and fixed by screws. There are two turntable mounting rings 55. The two turntable mounting rings 55 are respectively fitted onto the circular surface of the adjusting turntable 51 to ensure that the adjusting turntable 51 can rotate freely inside the adjusting turntable 51 and will not fall out of the permanent magnet rotor base 21.

[0052] To facilitate control of the rotation of the adjusting turntable 51 and the distance between the moving block 52 and the center of the adjusting turntable 51, bevel teeth 57 are provided on the opposing surface of the helical rack 56 on the adjusting turntable 51. At the same time, a bevel gear 54 that meshes with the bevel teeth 57 is also provided in the permanent magnet rotor base 21. The bevel gear 54 is fixed to the permanent magnet rotor base 21 by the first adjusting screw 510 to ensure stable meshing between the bevel gear 54 and the bevel teeth 57 and to prevent them from falling off. Rotating the first adjusting screw 510 can drive the bevel gear 54 to rotate, thereby driving the adjusting turntable 51 to rotate.

[0053] To improve the rotational stability of the permanent magnet rotor 2, four first adjusting screws 510 and bevel gears 54 are provided on the permanent magnet rotor base 21, and the four first adjusting screws 510 and bevel gears 54 are evenly distributed on the permanent magnet rotor base 21.

[0054] To facilitate the linear movement of the movable block 52 in the radial direction of the adjusting turntable 51, a slide groove 59 is fixed on the outer wall of the front end of the permanent magnet rotor base 21. At the same time, a slide rail 53 is inserted in the slide groove 59. The slide rail 53 passes through the outer wall of the permanent magnet rotor base 21 and its end is connected to the movable block 52 by screws. When the adjusting turntable 51 rotates, it can drive the movable block 52 to move along the slide rail 53. In order to facilitate understanding of the air gap adjustment distance, a scale is engraved on the slide groove 59. The scale can show the distance that the slide rail 53 moves in the slide groove 59, thereby expressing the air gap adjustment distance.

[0055] In order to protect the slide groove 59, an annular slide groove mounting ring 23 is welded on the outer wall of the front end of the permanent magnet rotor base 21. A slide groove mounting hole 25 for mounting the slide groove 59 is opened on the surface of the slide groove mounting ring 23. The slide groove 59 can be protected by the slide groove mounting ring 23.

[0056] Four sets of movable blocks 52, slide rails 53 and slide grooves 59 are provided and evenly distributed in the permanent magnet rotor base 21. In addition, in order to facilitate the installation of the load shaft 8, corresponding clearance holes are also provided on the adjusting turntable 51, through which the load shaft 8 passes.

[0057] The second magnetic ring adjustment mechanism 6 includes an adjustment ring 62 and a second adjustment screw 64. The adjustment ring 62 is a circular metal ring, which is welded to the second magnetic ring fixing tube 42 and is coaxial with the second magnetic ring fixing tube 42.

[0058] A countersunk hole is provided on the flange 72 of the mounting sleeve 71 of the fixed load shaft 8. The second adjusting screw 64 passes through the countersunk hole and is screwed to the adjusting ring 62. Rotating the second adjusting screw 64 can pull the second magnetic ring fixing tube 42 to move, thereby adjusting the air gap between the second permanent magnet ring 4 and the copper ring 13.

[0059] To improve the rotational stability of the permanent magnet rotor 2, an adjusting guide screw 65 is screwed onto the flange 72 on the mounting sleeve 71 of the fixed load shaft 8. The end of the adjusting guide screw 65 is threaded, and the front end is a smooth rod that passes through the adjusting ring 62. When the second adjusting screw 64 pulls the second magnetic ring fixing tube 42 to move, the adjusting ring 62 moves along the adjusting guide screw 65.

[0060] To facilitate observation of the air gap adjustment distance between the second permanent magnet ring 4 and the copper ring 13, two arc-shaped adjustment indicator plates 44 are welded to the end of the second magnet ring fixing tube 42. At the same time, a rectangular indicator plate groove 81 is also correspondingly opened on the retaining ring 73 on the mounting sleeve 71 of the fixed load shaft 8. The adjustment indicator plate 44 is inserted into the indicator plate groove 81. On the retaining ring 73, near the indicator plate groove 81, there is a scale. When the second adjusting screw 64 pulls the second magnet ring fixing tube 42 to move, the adjustment indicator plate 44 moves in the indicator plate groove 81. The air gap adjustment distance between the second permanent magnet ring 4 and the copper ring 13 can be viewed through the scale.

[0061] The air gap adjustment process in this embodiment:

[0062] Adjustment of the air gap between the first permanent magnet ring 3 and the copper sleeve 12: During adjustment, rotate any one of the first adjusting screws 510 on the permanent magnet rotor base 21. The first adjusting screw 510 drives the bevel gear 54 to rotate. At this time, the bevel gear 54 drives the adjusting turntable 51 to rotate. At this time, the other three bevel gears 54 also rotate synchronously. The moving block 52 moves along the slide groove 59 under the action of the helical rack 56, thereby adjusting the distance between the moving block 52 and the center of the adjusting turntable 51. This drives the magnetic plate mounting seat 32, on which the permanent magnet plate 31 is installed, to move, thereby realizing the adjustment of the air gap between the first permanent magnet ring 3 and the copper sleeve 12. At this time, the air gap adjustment distance can be viewed through the scale on the slide groove 59.

[0063] Adjustment of the air gap between the second permanent magnet ring 4 and the copper ring 13: During adjustment, rotate the second adjusting screw 64. The second adjusting screw 64 pulls the adjusting ring 62 to move, which in turn drives the second magnetic ring fixing tube 42 to move along the slot 63 on the adjusting bushing 61, thereby adjusting the air gap between the second permanent magnet ring 4 and the copper ring 13. At this time, the air gap adjustment distance can be viewed by adjusting the scale at the indicator 44 and the indicator slide groove 81.

[0064] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A non-mechanically contact vibration-isolated permanent magnet coupling, characterized in that: The device includes a conductor rotor (1), a permanent magnet rotor (2), and a magnetic ring adjustment mechanism. The conductor rotor (1) is connected to the drive shaft (7), and the permanent magnet rotor (2) is connected to the load shaft (8). The magnetic ring adjustment mechanism is set inside the permanent magnet rotor (2). The permanent magnet rotor (2) includes a first permanent magnet ring (3) and a second permanent magnet ring (4). The first permanent magnet ring (3) and the second permanent magnet ring (4) are inserted inside the conductor rotor (1) and form an air gap with the conductor rotor (1). The air gap between the first permanent magnet ring (3) and the second permanent magnet ring (4) and the conductor rotor (1) can be controlled and adjusted by the magnetic ring adjustment mechanism to realize the regulation of torque and speed.

2. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 1, characterized in that: The conductor rotor (1) includes a conductor rotor base (11), a copper sleeve (12) and a copper ring (13). The conductor rotor base (11) is connected to the drive shaft (7) through a mounting bushing (71). The copper sleeve (12) is disposed on the inner side of the conductor rotor base (11), and the copper ring (13) is disposed on the bottom surface of the conductor rotor base (11).

3. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 1, characterized in that: The permanent magnet rotor (2) also includes a permanent magnet rotor base (21), and a first permanent magnet ring (3) and a second permanent magnet ring (4) are movably disposed within the permanent magnet rotor base (21).

4. The non-mechanical contact vibration isolation permanent magnet coupling according to claim 1, characterized in that: The first permanent magnet ring (3) includes a permanent magnet plate (31) and a magnetic plate mounting seat (32). The permanent magnet plate (31) is disposed on the magnetic plate mounting seat (32), and the magnetic plate mounting seat (32) is movably disposed on the permanent magnet rotor base (21). The magnetic plate mounting seat (32) is adjustable in radial position along the permanent magnet rotor base (21).

5. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 4, characterized in that: Multiple sets of magnetic plate mounting seats (32) are radially arranged on the permanent magnet rotor base (21). The multiple sets of magnetic plate mounting seats (32) are evenly distributed on the permanent magnet rotor base (21), and the permanent magnet plates (31) on the magnetic plate mounting seats (32) correspond to the copper sleeves (12) inside the conductor rotor (1).

6. The non-mechanically contact vibration-isolated permanent magnet coupling according to claim 1, characterized in that: The second permanent magnet ring (4) includes a second magnet ring fixing plate (41) and a second magnet ring fixing tube (42). The second magnet ring fixing plate (41) is connected to the second magnet ring fixing tube (42). The second magnet ring fixing tube (42) is sleeved on the outside of the load shaft (8). The second magnet ring fixing tube (42) is controllably adjustable along the axial direction of the load shaft (8).

7. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 6, characterized in that: An adjustment indicator (44) is provided at the end of the second magnetic ring fixing tube (42), the adjustment indicator (44) indicating the distance the second magnetic ring fixing tube (42) moves axially along the load shaft (8).

8. The non-mechanical contact vibration isolation permanent magnet coupling according to claim 1, characterized in that: The magnetic ring adjustment mechanism includes a first magnetic ring adjustment mechanism (5) and a second magnetic ring adjustment mechanism (6). The first magnetic ring adjustment mechanism (5) synchronously adjusts the distance between each permanent magnet piece (31) on the first permanent magnet ring (3) and the copper sleeve (12) in the conductor rotor (1). The second magnetic ring adjustment mechanism (6) adjusts the distance between the second permanent magnet ring (4) and the copper ring (13) in the conductor rotor (1).

9. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 8, characterized in that: The first magnetic ring adjustment mechanism (5) includes an adjustment turntable (51), a moving block (52), and a slide rail (53). The adjustment turntable (51) and the slide rail (53) are set inside the permanent magnet rotor base (21). The moving block (52) is connected to the slide rail (53). A helical rack (56) is provided on the adjustment turntable (51). The moving block (52) connected to the magnetic plate mounting seat (32) cooperates with the helical rack (56). Rotating the adjustment turntable (51) can drive the moving block (52) to move along the slide rail (53), thereby adjusting the radial position of the moving block (52) on the adjustment turntable (51).

10. The non-mechanical contact vibration-isolated permanent magnet coupling according to claim 8, characterized in that: The second magnetic ring adjustment mechanism (6) includes an adjustment bushing (61), an adjustment ring (62), and a second adjustment screw (64). The adjustment bushing (61) is set on the permanent magnet rotor base (21), and the adjustment ring (62) is set on the second magnetic ring fixing tube (42) in the second permanent magnet ring (4). The second adjustment screw (64) is connected to the adjustment ring (62). Rotating the second adjustment screw (64) can adjust the distance between the second permanent magnet ring (4) and the copper ring (13) in the conductor rotor (1).

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