Axial radial bidirectional adjusting type permanent magnet eddy current magnetic coupler

Abstract

This invention relates to the field of coupler technology, specifically to an axial-radial bidirectional adjustable permanent magnet eddy current coupler. It includes an input rotor and an output rotor coupled to the inner side of the input rotor. The input rotor includes a heat sink, a copper disk, a copper ring, a connecting bar, and an input shaft. The two heat sinks are fixedly connected near their edges by the connecting bar. The copper disk is fixedly connected to the inner side of the heat sink. This invention achieves axial movement of the axial and radial permanent magnet disks by rotating a main motor, thereby changing the thickness of the axial air gap between the axial permanent magnet disk and the copper disk, and thus adjusting speed and torque. Simultaneously, it can also change the radial coupling area between the radial permanent magnet disk and the copper ring to adjust speed and torque. Because it can coordinate the changing directions of the axial working air gap and the effective radial coupling length, the two torque contributions can increase or decrease simultaneously, which is beneficial for expanding the overall torque adjustment range of the coupler.

Description

Technical Field

[0001] This invention relates to the field of coupler technology, specifically to an axial-radial bidirectional adjustable permanent magnet eddy current coupler. Background Technology

[0002] A permanent magnet eddy current coupler is a non-contact power transmission device, typically comprising a permanent magnet rotor assembly and a conductor rotor assembly. An air gap is provided between the permanent magnet rotor assembly and the conductor rotor assembly. When a relative speed difference exists between the permanent magnet rotor assembly and the conductor rotor assembly, the magnetic field generated by the permanent magnet moves relative to the conductor, inducing eddy currents within the conductor. These induced eddy currents interact with the permanent magnet magnetic field to form electromagnetic torque, thereby achieving power transmission between the input and output ends. Because there is no rigid mechanical contact between the permanent magnet rotor assembly and the conductor rotor assembly, the permanent magnet eddy current coupler features reduced mechanical wear, isolation of partial vibration, buffering of impact loads, and protection through slip under overload conditions. It can be applied to belt conveyors, fans, pumps, mining machinery, and other industrial transmission systems.

[0003] Existing permanent magnet eddy current couplers mainly include disc-type and cylindrical structures.

[0004] A disc-type permanent magnet eddy current coupler typically consists of an axial permanent magnet and an axial conductor disc. The axial permanent magnet and the axial conductor disc are arranged opposite each other along the axial direction, and an axial working air gap is formed between them. The disc structure mainly utilizes the end face area to transmit torque.

[0005] A cylindrical permanent magnet eddy current coupler typically consists of a radial permanent magnet and a radial conductor ring. The radial permanent magnet and the radial conductor ring are arranged opposite each other in the radial direction, and a radial working air gap is formed between them. The cylindrical structure mainly utilizes the circumferential area to transmit torque.

[0006] The effective electromagnetic area of ​​a single disc or single cylindrical structure is limited by the outer diameter, axial length and installation space of the device. When it is necessary to increase the transmitted torque, it is usually necessary to increase the size of the device, increase the amount of permanent magnets or reduce the working air gap, which is not conducive to balancing structural compactness, assembly safety and operational reliability.

[0007] Existing permanent magnet eddy current couplers mainly have the following problems: a) Insufficient space utilization: Single disc structures mainly utilize the end face area, while single cylindrical structures mainly utilize the circumferential area; when the device's external dimensions are limited, it is difficult to further increase the effective electromagnetic interaction area and transmitted torque. b) Insufficient torque adjustment capability: Fixed air gap structures cannot actively change the torque transmission capacity of the axial transmission unit according to load requirements, making it difficult to accommodate different operating conditions such as light-load operation, rated operation, and high-load operation. c) Mismatch of air gaps on both sides: For structures with two axial transmission units, if independent adjustment mechanisms are used on the left and right sides respectively, they are easily affected by assembly errors, lead screw errors, and transmission clearances, resulting in inconsistent air gaps on both sides. d) Axial force balance is affected: If the air gap on one side decreases while the air gap on the other side increases, the axial electromagnetic interaction on both sides will be affected. Uneven force and transmitted torque may occur, increasing the risk of disc rubbing and affecting operational stability; e) The gap adjustment path and the torque transmission path are prone to mutual interference. When the magnetic coupler is running, some permanent magnet components or conductor components are in a rotating state. If the fixed gap adjustment component is directly rigidly connected to the rotating component, it may cause friction, jamming and additional load; f) The axial and radial structures cannot be adjusted at the same time. In the existing composite structure, the adjustment mechanism of the axial action area and the radial action area still has problems such as complex structure, large synchronization error and mutual interference between the adjustment path and the torque transmission path. It is necessary to design a compact mechanical mechanism that can simultaneously adjust the axial working air gap and the effective radial coupling length; g) Gap adjustment requires an externally set special gap adjustment device, which occupies additional space and increases the complexity of the device. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this invention proposes a bidirectional adjustable permanent magnet eddy current coupler. This invention achieves axial movement of the axial and radial permanent magnet disks by rotating the main motor, thereby changing the thickness of the axial air gap between the axial permanent magnet disk and the copper disk, and realizing speed and torque adjustment. At the same time, it can also change the radial coupling area between the radial permanent magnet disk and the copper ring to adjust speed and torque. Since it can coordinate the changing directions of the axial working air gap and the radial effective coupling length, the two torque contributions can increase or decrease synchronously, which is beneficial to expanding the adjustment range of the total torque of the entire coupler.

[0009] The technical solution adopted by this invention to solve its technical problem is as follows: A axial-radial bidirectional adjustable permanent magnet eddy current coupler, comprising an input rotor and an output rotor coupled to the inner side of the input rotor; the input rotor includes a heat sink, a copper disk, copper rings, a connecting strip, and an input shaft; two heat sinks are fixedly connected near their edges by the connecting strip; a copper disk is fixedly connected to the inner side of each heat sink; a disk hole is provided through the center of each heat sink and copper disk; two copper rings connected to the connecting strip are provided between the two copper disks; the input shaft is fixedly connected to the left end of each heat sink. The output rotor includes an axial permanent magnet disk, a radial permanent magnet disk, a support bearing, and an output shaft. The output shaft is rotatably connected to the disk bore via the support bearing. Two axial permanent magnet disks are located between two copper disks and connected to the output shaft. Two radial permanent magnet disks are located between two axial permanent magnet disks and connected to the output shaft. The two radial permanent magnet disks are located inside corresponding copper rings. A square internal groove is provided on the inner side of the output shaft. Two square internal blocks are slidably connected within the internal groove. The two internal blocks pass through each other and are threadedly connected to a screw driven by a main motor. The threads at both ends of the screw are opposite. A strip groove is provided on the outer wall of the output shaft, communicating with the internal groove. The axial and radial permanent magnet disks are movably sleeved on the outer wall of the output shaft. The axial and radial permanent magnet disks are slidably connected to the strip groove via strip blocks. The internal blocks are connected to the strip blocks via connectors.

[0010] Preferably, the connector includes an auxiliary motor, a turntable, and a plug; the auxiliary motor is embedded inside the built-in block; the built-in block has a rotating groove; the turntable is rotatably connected within the rotating groove; the output end of the auxiliary motor is fixedly connected to the center of the turntable; the turntable has a centrally symmetrical receiving groove on the side facing the strip block; the turntable has a single receiving groove offset from the receiving groove on the side facing the strip block; the rotating groove has two insertion holes extending through it towards the strip groove; the plug is slidably connected within the insertion holes; the strip block has a slot for inserting the plug on the side facing the built-in block; the inner wall of the insertion hole has a return groove; a return block is slidably connected within the return groove; the side of the return block away from the auxiliary motor is connected to the inner wall of the return groove by a return spring.

[0011] Preferably, a vertical block is slidably connected within the slot; the upper end of the vertical block is connected to the upper inner wall of the slot via a vertical spring; a horizontal groove is provided through the slot outwards; a horizontal block is slidably connected within the horizontal groove; one end of each of the two horizontal blocks is located on one side of the vertical block, and the other end can contact the inner wall of the strip groove; an inverted V-shaped guide groove is provided through the vertical block; a guide block is movably connected within the guide groove; and the guide block is fixedly connected to the corresponding horizontal block.

[0012] Preferably, the inner wall of the strip groove is uniformly provided with locking grooves along its length; the horizontal block can be inserted into the locking groove.

[0013] Preferably, there are multiple connecting strips, which are evenly distributed around the copper ring; one of the connecting strips has an adjustment groove inside; a gear is rotatably connected to the center of the adjustment groove; the gear is symmetrically centered and meshes with two racks; the adjustment groove and the inner side of the corresponding connecting strip are provided with two driven grooves; a driven block is slidably connected in the driven groove; one end of the driven block is fixedly connected to the corresponding rack, and the other end is fixedly connected to the corresponding copper ring.

[0014] Preferably, the inner wall of the remaining connecting strip is provided with an auxiliary groove; two auxiliary blocks are slidably connected in the auxiliary groove; the auxiliary blocks are fixedly connected to the outer wall of the corresponding copper ring.

[0015] Preferably, the adjusting groove has an outer groove extending outwards; one end of the gear is rotatably connected to the outer groove at a stepped position; a square groove extends through the center of the gear; a square rod is slidably connected inside the square groove; the inner wall of the adjusting groove has a square inner groove corresponding to the square groove; and the end of the square rod can be inserted into the inner groove.

[0016] Preferably, the inner wall of the square groove is provided with a pull groove along its length; a pull block is slidably connected in the pull groove; the pull block is fixedly connected to the square rod; and the end of the pull block facing the inner groove is connected to the inner wall of the pull groove by a tension spring.

[0017] Preferably, two main concave rings are rotatably connected to the outer wall of the output shaft; a main protrusion fixed to the output shaft is electrically connected to the inner side of the main concave ring; the main protrusion is connected to the main motor via a wiring harness; two conductive strips are embedded in the inner wall of the built-in groove; a conductive block in contact with the conductive strips is embedded in the outer wall of the built-in block; the conductive block is connected to the auxiliary motor via a wiring harness; the length direction of the conductive strip is consistent with the length direction of the built-in groove; two secondary concave rings are rotatably connected to the outer wall of the output shaft; a secondary protrusion is electrically connected to the inner wall of the secondary concave ring; and the secondary protrusion is electrically connected to the corresponding conductive strip.

[0018] Preferably, the main motor is an eccentric motor; the eccentric output end of the main motor is located away from the strip groove; and the auxiliary motor is a micro motor.

[0019] The beneficial effects of this invention are as follows: 1. This invention achieves axial movement of the axial permanent magnet disk and the radial permanent magnet disk by rotating the main motor, thereby changing the thickness of the axial air gap between the axial permanent magnet disk and the copper disk, and realizing speed and torque adjustment; at the same time, it can also change the radial coupling area between the radial permanent magnet disk and the copper ring to adjust speed and torque; since it can coordinate the changing direction of the axial working air gap and the radial effective coupling length, the two torque contributions can increase or decrease synchronously, which is beneficial to expanding the adjustment range of the total torque of the entire coupler.

[0020] 2. This invention connects strip blocks on axial and radial permanent disks via connectors, enabling the coupler to have multiple adjustment modes to meet different working conditions and thus have a wider range of applications.

[0021] 3. The present invention unlocks the strip block within the strip groove by inserting a plug into the slot and locks the strip block within the strip groove by removing the plug from the slot, thereby ensuring that the axial permanent magnet disk and the radial permanent magnet disk remain axially stable after adjustment, thus improving the stability of the coupler during operation. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the input rotor in this invention; Figure 3 This is a cross-sectional view of the connecting strip in this invention; Figure 4 This is a cross-sectional view of the gear in this invention; Figure 5 This is a perspective view of the output rotor in this invention; Figure 6 This is a cross-sectional view of the present invention; Figure 7 yes Figure 6 A structural diagram of the built-in blocks and strip blocks; Figure 8 This is a schematic diagram of the cooperation between the vertical and horizontal blocks in this invention; Figure 9 This is a structural diagram of the vertical block in this invention; Figure 10 This is a structural diagram of the turntable in this invention.

[0024] In the diagram: Input rotor 1, heat sink 11, copper disk 12, copper ring 13, input shaft 14, disk hole 15, output rotor 2, axial permanent magnet disk 21, radial permanent magnet disk 22, support bearing 23, connecting bar 3, adjusting groove 31, driven groove 32, auxiliary groove 33, auxiliary block 34, outer groove 35, inner groove 36, output shaft 4, built-in groove 41, strip groove 42, locking groove 43, main concave ring 44, main protrusion 45, conductive strip 46, secondary concave ring 47, secondary protrusion 48, built-in block 5, rotating groove. 51. Socket 52. Return slot 53. Conductive block 54. Main motor 6. Screw 61. Strip block 7. Slot 71. Vertical block 72. Guide slot 721. Vertical spring 73. Horizontal slot 74. Horizontal block 75. Guide block 76. Connector 8. Auxiliary motor 81. Turntable 82. Same collection slot 821. Single collection slot 822. Insert rod 83. Return block 84. Return spring 85. Gear 9. Rack 91. Driven block 92. Square slot 93. Square rod 94. Pull slot 95. Pull block 96. Tension spring 97. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 10 As shown, the present invention includes the following embodiments: Example 1: A axial-radial bidirectional adjustable permanent magnet eddy current coupler includes an input rotor 1 and an output rotor 2 coupled to the inner side of the input rotor 1; the input rotor 1 includes a heat sink 11, a copper disk 12, a copper ring 13, a connecting bar 3, and an input shaft 14; the two heat sinks 11 are fixedly connected near their edges by the connecting bar 3; the copper disk 12 is fixedly connected to the inner side of the heat sink 11; a disk hole 15 is provided through the center of the heat sink 11 and the copper disk 12; two copper rings 13 connected to the connecting bar 3 are provided between the two copper disks 12; the input shaft 14 is fixedly connected to the left end of the heat sink 11; The output rotor 2 includes an axial permanent magnet disk 21, a radial permanent magnet disk 22, a support bearing 23, and an output shaft 4; the output shaft 4 is rotatably connected to the disk hole 15 via the support bearing 23; two axial permanent magnet disks 21 are located between two copper disks 12 and connected to the output shaft 4; two radial permanent magnet disks 22 are located between two axial permanent magnet disks 21 and connected to the output shaft 4; the two radial permanent magnet disks 22 are located inside corresponding copper rings 13; a square internal groove 41 is provided inside the output shaft 4; the internal groove 41 Two square built-in blocks 5 are slidably connected; the two built-in blocks 5 pass through each other and are threadedly connected to a screw 61 driven by a main motor 6; the screw 61 has opposite threads at both ends; the outer wall of the output shaft 4 is connected to the built-in groove 41 and has a strip groove 42; the axial permanent magnet 21 and the radial permanent magnet 22 are movably sleeved on the outer wall of the output shaft 4; the axial permanent magnet 21 and the radial permanent magnet 22 are slidably connected in the strip groove 42 through strip blocks 7; the built-in blocks 5 are connected to the strip blocks 7 through connectors 8.

[0027] The input shaft 14 of the input rotor 1 is connected to a power source, and the output shaft 4 of the output rotor 2 is connected to a load source. The power source drives the input shaft 14 to rotate. During the rotation of the input shaft 14, the heat sink 11 fixed to the left position will rotate. During the rotation of the heat sink 11 on the left position, the heat sink 11 on the right position will rotate through the connecting bar 3. The two heat sinks 11 can dissipate the heat generated by the copper disk 12 during operation, and can also agitate the surrounding gas for overall heat dissipation of the coupler. During the rotation of the heat sink 11, the copper disk 12 and the copper ring 13 will rotate. During the process, the axial permanent magnet 21, which maintains a relative gap, rotates. The copper ring 13, during its rotation, rotates relative to the radial permanent magnet 22, which also maintains a relative gap. This causes the input rotor 1 to rotate relative to the output rotor 2, transmitting torque (the specific principle is existing technology and will not be elaborated further). This causes the output rotor 2 to rotate, and the axial permanent magnet 21, radial permanent magnet 22, and output shaft 4 to rotate, thereby driving the load source to rotate. During or before the coupler's operation, the main motor 6 is controlled to operate. During the rotation of the main motor 6, the screw 61 rotates via the coupling. The threads at both ends of screw 61 are reversed (the threads are omitted in the diagram for simplification; specifically, both ends of screw 61 are threaded but reversed). During rotation, screw 61 drives the threaded drive connection to the inner block 5 to move closer or further apart along the inner groove 41. The inner block 5, through connector 8, drives at least one of the connected axial permanent magnet disks 21 and radial permanent magnet disks 22 to move axially along the output shaft 4. The two axial permanent magnet disks 21 will synchronously move closer or further apart, and the two radial permanent magnet disks 22 will also synchronously move closer or further apart. The axial permanent magnet disks 21 and radial permanent magnet disks 22 can move simultaneously... The step is triggered by an activity, or one of the activities can be controlled independently. When the two axial permanent disks 21 approach each other, the gap between the two axial permanent disks 21 and the copper disk 12 will increase. When the two axial permanent disks 21 move away from each other, the gap between the two axial permanent disks 21 and the copper disk 12 will decrease. When the two radial permanent disks 22 approach or move away from each other, the coupling area between the radial permanent disk 22 and the corresponding copper ring 13 will change. This coupling area refers to the overlap length of the radial permanent disk 22 and the copper ring 13 in the axial direction. The larger the overlap length, the larger the coupling area. In this embodiment, since the main motor 6 is located in the built-in slot 41 of the output shaft 4, the main motor 6 can rotate with the rotation of the output shaft 4, and the two work independently without affecting each other. Since the threads at both ends of the screw 61 are symmetrical and have opposite directions of rotation, the moving distances of the two axial permanent magnet disks 21 are consistent, and similarly, the moving distances of the radial permanent magnet disks 22 are consistent. This makes the thickness of the air gap between the two axial permanent magnet disks 21 and their respective copper disks 12 consistent, which helps to reduce the imbalance of axial forces on both sides and the risk of unilateral disk rubbing. It also makes the effective coupling area between the two radial permanent magnet disks 22 and their respective copper rings 13 consistent. The screw 61 is preferably a trapezoidal lead screw with self-locking capability to reduce position drift caused by running vibration and axial load. The position of the built-in block 5 is kept stable; the support bearing 23 is used to reduce the friction between the output shaft 4 and the disk hole 15; the axial permanent magnet disk 21 and the copper disk 12 are combined to form an axial permanent magnet eddy current drive unit, and the radial permanent magnet disk 22 and the copper ring 13 are combined to form a radial permanent magnet eddy current unit. Since two axial permanent magnet eddy current drive units and two radial permanent magnet eddy current drive units are set in the same coupler, the end face area and the circumferential area can be used at the same time to increase the effective electromagnetic action area in the limited installation space, so that the axial action area and the radial action area participate in torque transmission together; the cooperation between the same screw 61 and the connector 8 can adjust the axial permanent magnet eddy current drive unit and the radial permanent magnet eddy current drive unit simultaneously or separately. This invention achieves axial movement of the axial permanent magnet disk 21 and the radial permanent magnet disk 22 by rotating the main motor 6, thereby changing the thickness of the axial air gap between the axial permanent magnet disk 21 and the copper disk 12, and realizing speed and torque adjustment; at the same time, it can also change the radial coupling area between the radial permanent magnet disk 22 and the copper ring 13 to adjust speed and torque; since it can coordinate the changing direction of the axial working air gap and the radial effective coupling length, the two torque contributions can increase or decrease synchronously, which is beneficial to expanding the adjustment range of the total torque of the entire coupler.

[0028] Example 2: The connector 8 includes an auxiliary motor 81, a turntable 82, and a plug 83; the auxiliary motor 81 is embedded inside the built-in block 5; the built-in block 5 has a rotating groove 51 inside; the turntable 82 is rotatably connected to the rotating groove 51; the output end of the auxiliary motor 81 is fixedly connected to the center of the turntable 82; the turntable 82 has a centrally symmetrical receiving groove 821 on the side facing the strip block 7; the turntable 82 has a single receiving groove 822 offset from the receiving groove 821 on the side facing the strip block 7. The rotating groove 51 has two insertion holes 52 extending through the strip groove 42; a plug rod 83 is slidably connected in the insertion hole 52; the strip block 7 has a slot 71 for inserting the plug rod 83 on the side facing the inner block 5; a return groove 53 is provided on the inner wall of the insertion hole 52; a return block 84 is slidably connected in the return groove 53; the return block 84 is fixedly connected to the plug rod 83; the side of the return block 84 away from the auxiliary motor 81 is connected to the inner wall of the return groove 53 by a return spring 85.

[0029] With the axial permanent disk 21 pressed against the radial permanent disk 22, the spacing between the slots 71 on the strip block 7 connecting the axial permanent disk 21 and the radial permanent disk 22 is consistent with the spacing between the two sockets 52 on a single built-in block 5. Before the main motor 6 rotates the screw 61 to drive the axial permanent disk 21 and the radial permanent disk 22 to move axially, the connector 8, turntable 82, and plug bar 83 on the built-in block 5 are controlled to move axially along the output shaft 4 until the two sockets 52 on the built-in block 5 are aligned with the two corresponding slots 71. Then, the connection type is selected. In the first method, the axial permanent magnet 21 and the radial permanent magnet 22 are driven to move simultaneously. Specifically, the auxiliary motor 81 drives the turntable 82 to rotate. During the rotation of the turntable 82, the same-collection slot 821 and the insertion rod 83 on the turntable 82 are misaligned. Since the openings of the same-collection slot 821 and the single-collection slot 822 are transitionally set with the surface of the turntable 82, the two insertion rods 83 can be smoothly moved out of the corresponding same-collection slot 821, so that the insertion rods 83 abut against the inner surface of the turntable 82 where the same-collection slot 821 and the single-collection slot 822 are not set. During the process of the insertion rods 83 moving out of the same-collection slot 821, they will move along the insertion hole 52. When the outer wall is moved, the insert rod 83 will drive the return block 84 to slide along the return groove 53 and overcome the elastic force of the return spring 85. During the outward movement of the two insert rods 83, they will be inserted into the corresponding two slots 71. In this way, the two strip blocks 7 on the left are connected by the connector 8 on the left, and the two strip blocks 7 on the right are connected by the connector 8 on the right. When the main motor 6 is rotated, the main motor 6 will drive the screw 61 to rotate. The screw 61 will drive the two built-in blocks 5 to move closer or further away from each other, so that the axial working air gap and the radial effective coupling length are changed at the same time. In the second scenario, one of the axial permanent magnet 21 and the radial permanent magnet 22 is driven to move. Specifically, the auxiliary motor 81 drives the turntable 82 to rotate. During the rotation of the turntable 82, the receiving slot 821 on the turntable 82 is misaligned with the insert rod 83, causing the insert rod 83 to move outward against the return spring 85. The two insert rods 83 then move outward and insert into the slots 71 of the corresponding strip blocks 7, so that the two left strip blocks 7 are inserted by the two left insert rods 83, and the two right strip blocks 7 are inserted by the two right insert rods 83. Then, the single receiving slot 822 on the turntable 82 is continuously aligned with one of the insert rods 83, so that one of the insert rods 83 will... Under the action of the return spring 85, one of the inserts 83 will return to insert into the single receiving slot 822, while the other insert 83 remains inserted into the corresponding slot 71. This causes one of the two left strip blocks 7 to be inserted by the left insert 83, and one of the two right strip blocks 7 to be inserted by the right insert 83. This causes one of the strip blocks 7 corresponding to the axial permanent disk 21 and the radial permanent disk 22 to be connected by the connector 8. This causes one of the axial permanent disk 21 and the radial permanent disk 22 to be driven to move when the screw 61 rotates, so that the axial working air gap and the radial effective coupling length are changed separately. The third type is to independently adjust the left axial working air gap and the right axial working air gap, and independently adjust the left radial effective coupling length and the right radial effective coupling length. Specifically, it can control the left-side connector 8 and the right-side connector 8 to select one of them to be enabled, so as to achieve independent adjustment. This type is an unconventional adjustment. Normally, the left and right axial working air gaps are adjusted synchronously, and similarly, the left and right radial effective coupling lengths are usually adjusted synchronously. The present invention connects the strip blocks 7 on the permanent disks 21 and 22 with different axial directions via connector 8, thereby enabling the coupler to have multiple adjustment modes to meet different working conditions and have a wider range of applications.

[0030] Example 3: A vertical block 72 is vertically slidably connected within the slot 71; the upper end of the vertical block 72 is connected to the upper inner wall of the slot 71 via a vertical spring 73; a horizontal groove 74 is horizontally provided through the slot 71; a horizontal block 75 is slidably connected within the horizontal groove 74; one end of each of the two horizontal blocks 75 is located on one side of the vertical block 72, and the other end can contact the inner wall of the strip groove 42; an inverted V-shaped guide groove 721 is provided through the vertical block 72; a guide block 76 is movably connected within the guide groove 721; the guide block 76 is fixedly connected to the corresponding horizontal block 75.

[0031] In this embodiment, the inner wall of the strip groove 42 is uniformly provided with locking grooves 43 along the length direction; the horizontal block 75 can be inserted into the locking groove 43.

[0032] As the insertion rod 83 moves outward along the insertion hole 52, it will be inserted into the corresponding slot 71. The vertical block 72 inside the slot 71 will be squeezed by the insertion rod 83 and will overcome the vertical spring 73 to move closer to the bottom of the slot 71. As the vertical block 72 slides along the slot 71, it will pull the two guide blocks 76 closer to each other through the inverted V-shaped guide groove 721. As the two guide blocks 76 move closer to each other, they will pull the horizontal block 75 to retract along the horizontal groove 74. The end of the horizontal block 75 will be pulled out from the locking groove 43, realizing the unlocking of the strip groove 42 and the strip block 7. This allows the strip block 7 to move with the movement of the built-in block 5. When the insertion rod 83 moves out of the slot 71, the vertical spring 73 will push the vertical block 72 away from the bottom of the slot 71. The vertical block 72 will drive the guide groove 721 to push the two corresponding guide blocks 76 away from each other. The guide blocks 76 will drive the horizontal block 75 to slide along the horizontal groove 74 and insert into the locking groove 43, realizing the locking of the strip block 7 in the strip groove 42. The present invention unlocks the strip block 7 in the strip groove 42 by inserting the insert rod 83 into the slot 71 and locks the strip block 7 in the strip groove 42 by removing the insert rod 83 from the slot 71, thereby ensuring that the axial permanent disk 21 and the radial permanent disk 22 remain axially stable after adjustment, thereby improving the stability of the coupler during operation.

[0033] Example 4: There are multiple connecting strips 3, which are evenly distributed around the copper ring 13; one of the connecting strips 3 has an adjustment groove 31 inside; the center of the adjustment groove 31 is rotatably connected to a gear 9; the gear 9 is symmetrically centered and meshes with two racks 91; the adjustment groove 31 and the inner side of the corresponding connecting strip 3 are provided with two driven grooves 32; a driven block 92 is slidably connected in the driven groove 32; one end of the driven block 92 is fixedly connected to the corresponding rack 91, and the other end is fixedly connected to the corresponding copper ring 13.

[0034] In this embodiment, the inner wall of the remaining connecting strip 3 is provided with an auxiliary groove 33; two auxiliary blocks 34 are slidably connected in the auxiliary groove 33; the auxiliary blocks 34 are fixedly connected to the outer wall of the corresponding copper ring 13.

[0035] Before the axial permanent magnet disk 21 and the radial permanent magnet disk 22 are simultaneously adjusted axially, the gear 9 can be pre-controlled to rotate. During the rotation of the gear 9, it will drive two simultaneously meshing racks 91 to move along the length direction. The two racks 91 are parallel to each other and move in opposite directions. During the movement of the racks 91, they will drive the driven block 92 to slide along the corresponding driven groove 32. The driven block 92 will drive the two copper rings 13 to move closer or further apart. If the two copper rings 13 are adjusted to be located on the outside of the two radial permanent magnet disks 22 in the axial direction, the axial working air gap will increase and the effective radial coupling length will decrease as the two built-in blocks 5 move closer together. If the two copper rings 13 are adjusted to be located on the outside of the two radial permanent magnet disks 22 in the axial direction, the axial working air gap will increase and the effective radial coupling length will decrease as the two built-in blocks 5 move closer together. The copper ring 13 is located axially inside the two radial permanent disks 22, which increases the axial working air gap and the effective radial coupling length as the two built-in blocks 5 approach each other. If the two copper rings 13 are adjusted to approach each other to their extreme positions, so that the copper rings 13 are completely displaced from the radial permanent disks 22 during the movement, the axial permanent disk 21 and the copper disk 12 can work independently, which is suitable for multiple working modes. Furthermore, the gear 9 and the rack 91 are only set in a single connecting bar 3, and the other connecting bars 3 are provided with auxiliary grooves 33. During the axial movement of the copper ring 13, the auxiliary block 34 will slide along the auxiliary groove 33, making the movement smoother.

[0036] Example 5: The adjusting groove 31 has an outer groove 35 extending outwards; one end of the gear 9 is rotatably connected to the outer groove 35 at a stepped position; a square groove 93 extends through the center of the gear 9; a square rod 94 is slidably connected inside the square groove 93; the inner wall of the adjusting groove 31 has a square inner groove 36 corresponding to the square groove 93; the end of the square rod 94 can be inserted into the inner groove 36.

[0037] In this embodiment, the inner wall of the square groove 93 is provided with a pull groove 95 along the length direction; a pull block 96 is slidably connected in the pull groove 95; the pull block 96 is fixedly connected to the square rod 94; the end of the pull block 96 facing the inner groove 36 is connected to the inner wall of the pull groove 95 by a tension spring 97.

[0038] Before adjusting gear 9, the square rod 94 needs to be pulled outward along the square groove 93. The square rod 94 will move out of the square inner groove 36, thus unlocking the square rod 94. During the outward movement of the square rod 94, the pull block 96 will slide along the pull groove 95 and overcome the tension of the tension spring 97. After the square rod 94 moves outward, it will rotate and directly drive gear 9 to rotate. After gear 9 rotates, the square rod 94 is released. The tension spring 97 pulls the pull block 96 back along the pull groove 95. The pull block 96 will pull the square rod 94 back along the square groove 93. The end of the square rod 94 can be tapered so that the square rod 94 can directly insert into the inner groove 36 during the return process, thus locking the square rod 94 and gear 9 and preventing the adjusted copper ring 13 from moving axially. Note that the centrifugal force experienced by the square rod 94 and the pull block 96 during operation is much smaller than the tension of the tension spring 97, making the insertion of the square rod 94 into the inner groove 36 more stable.

[0039] Example 6: Two main concave rings 44 are rotatably connected to the outer wall of the output shaft 4; the inner side of the main concave rings 44 is electrically connected to the main protrusions 45 fixed to the output shaft 4; the main protrusions 45 are connected to the main motor 6 via a wire harness; two conductive strips 46 are embedded in the inner wall of the built-in groove 41; a conductive block 54 that contacts the conductive strips 46 is embedded in the outer wall of the built-in block 5; the conductive block 54 is connected to the auxiliary motor 81 via a wire harness; the length direction of the conductive strips 46 is consistent with the length direction of the built-in groove 41; two secondary concave rings 47 are rotatably connected to the outer wall of the output shaft 4; the inner wall of the secondary concave rings 47 is electrically connected to secondary protrusions 48; the secondary protrusions 48 are electrically connected to the corresponding conductive strips 46.

[0040] The inner and outer sides of the main concave ring 44 are connected through the first conductive element, which is connected to the power supply. The current is transmitted to the main protrusion 45 through the annular conductive element set on the inner side of the main concave ring 44. The main protrusion 45 will connect the current to the main motor 6 through the wire harness, so as to realize the operation of the main motor 6. The inner and outer sides of the secondary concave ring 47 are connected through the second conductive element, which is connected to the power supply. The current is transmitted to the secondary protrusion 48 through the annular conductive ring set on the inner side of the secondary concave ring 47. The secondary protrusion 48 will connect the current to the conductive strip 46 through the wire harness. The conductive strip 46 is in contact with the conductive block 54. The conductive block 54 transmits the current to the secondary motor 81. The conductive block 54 maintains contact with the conductive strip 46 after the built-in block 5 moves.

[0041] Example 7: The main motor 6 is an eccentric motor; the eccentric output end of the main motor 6 is located away from the strip groove 42; the auxiliary motor 81 is a micro motor.

[0042] After the main motor 6 is an eccentric motor, the screw 61 will be moved away from the strip groove 42, making room for the auxiliary motor 81 in the built-in block 5, which is convenient for installing the micro motor; in this embodiment, the axial permanent magnet disk 21 and the radial permanent magnet disk 22 can be made of neodymium iron boron, samarium cobalt or other permanent magnet materials, and the copper disk 12 and the copper ring 13 can also be replaced with other highly conductive materials, such as aluminum; In this embodiment, the main motor 6 and screw 61 are balanced by the centrifugal force on the built-in block 5, connector 8 and strip block 7 during rotation. That is, the centrifugal force on each component in the output shaft 4 is balanced, and the center of gravity coincides with the central axis to reduce vibration during operation. In addition, the components on the multiple connecting strips 3 are also balanced by centrifugal force during rotation, which also reduces vibration.

[0043] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection. In the description of the present invention, "sliding connection" refers to a connection where the two parts can only slide and cannot be separated. Specifically, the groove can be set to be concave and the block can be set to be convex, and the specific design can be adjusted according to the actual situation. "Sliding fit" refers to a connection where the two parts can slide and separate. In the description of the present invention, "rotational connection" refers to a connection where the two parts can only rotate and cannot produce axial displacement. Specifically, an annular groove can be provided on the inner wall of the hole, and a ring that is rotatably connected to the groove can be fixed to the outer wall of the shaft.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A axially and radially adjustable permanent magnet eddy current coupler, comprising an input rotor and an output rotor coupled to the inner side of the input rotor; characterized in that: The input rotor includes a heat sink, a copper disc, a copper ring, a connecting bar, and an input shaft; the two heat sinks are fixedly connected near their edges by the connecting bar; the copper disc is fixedly connected to the inner side of the heat sink; a hole is provided through the center of the heat sink and the copper disc; two copper rings connected to the connecting bar are provided between the two copper discs; the input shaft is fixedly connected to the left end of the heat sink. The output rotor includes an axial permanent magnet disk, a radial permanent magnet disk, a support bearing, and an output shaft. The output shaft is rotatably connected to the disk bore via the support bearing. Two axial permanent magnet disks are located between two copper disks and connected to the output shaft. Two radial permanent magnet disks are located between two axial permanent magnet disks and connected to the output shaft. The two radial permanent magnet disks are located inside corresponding copper rings. A square internal groove is provided on the inner side of the output shaft. Two square internal blocks are slidably connected within the internal groove. The two internal blocks pass through each other and are threadedly connected to a screw driven by a main motor. The threads at both ends of the screw are opposite. A strip groove is provided on the outer wall of the output shaft, communicating with the internal groove. The axial and radial permanent magnet disks are movably sleeved on the outer wall of the output shaft. The axial and radial permanent magnet disks are slidably connected to the strip groove via strip blocks. The internal blocks are connected to the strip blocks via connectors.

2. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 1, characterized in that: The connector includes an auxiliary motor, a turntable, and a plug; the auxiliary motor is embedded inside the built-in block; the built-in block has a rotating groove; the turntable is rotatably connected to the rotating groove; the output end of the auxiliary motor is fixedly connected to the center of the turntable; the turntable has a centrally symmetrical receiving groove on the side facing the strip block; the turntable has a single receiving groove offset from the receiving groove on the side facing the strip block; the rotating groove has two insertion holes extending through it towards the strip groove; the plug is slidably connected to the insertion hole; the strip block has a slot for inserting the plug on the side facing the built-in block; the inner wall of the insertion hole has a return groove; a return block is slidably connected to the return groove; the side of the return block away from the auxiliary motor is connected to the inner wall of the return groove by a return spring.

3. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 2, characterized in that: A vertical block is vertically slidably connected within the slot; the upper end of the vertical block is connected to the upper inner wall of the slot via a vertical spring; a horizontal groove is horizontally extending outward from the slot; a horizontal block is slidably connected within the horizontal groove; one end of each of the two horizontal blocks is located on one side of the vertical block, and the other end can contact the inner wall of the strip groove; an inverted V-shaped guide groove is provided through the vertical block; a guide block is movably connected within the guide groove; and the guide block is fixedly connected to the corresponding horizontal block.

4. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 3, characterized in that: The inner wall of the strip groove is uniformly provided with locking grooves along its length; the horizontal block can be inserted into the locking groove.

5. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 2, characterized in that: The number of connecting strips is multiple and they are evenly distributed around the copper ring; one of the connecting strips has an adjustment groove inside; a gear is rotatably connected to the center of the adjustment groove; the gear is symmetrically centered and meshes with two racks; the adjustment groove and the inner side of the corresponding connecting strip are connected to two driven grooves; a driven block is slidably connected in the driven groove; one end of the driven block is fixedly connected to the corresponding rack, and the other end is fixedly connected to the corresponding copper ring.

6. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 5, characterized in that: The inner wall of the remaining connecting strip is provided with an auxiliary groove; two auxiliary blocks are slidably connected in the auxiliary groove; the auxiliary blocks are fixedly connected to the outer wall of the corresponding copper ring.

7. The axial-radial bidirectional adjustable permanent magnet eddy current coupler according to claim 5, characterized in that: The adjusting groove has an outer groove extending outwards; one end of the gear is rotatably connected to the outer groove at a stepped position; a square groove extends through the center of the gear; a square rod is slidably connected inside the square groove; the inner wall of the adjusting groove has a square inner groove corresponding to the square groove; the end of the square rod can be inserted into the inner groove.

8. A axially and radially adjustable permanent magnet eddy current coupler according to claim 7, characterized in that: The inner wall of the square groove is provided with a pull groove along its length; a pull block is slidably connected in the pull groove; the pull block is fixedly connected to the square rod; the end of the pull block facing the inner groove is connected to the inner wall of the pull groove by a tension spring.

9. A axially and radially adjustable permanent magnet eddy current coupler according to claim 2, characterized in that: Two main concave rings are rotatably connected to the outer wall of the output shaft; a main protrusion fixed to the output shaft is electrically connected to the inner side of the main concave ring; the main protrusion is connected to the main motor via a wiring harness; two conductive strips are embedded in the inner wall of the built-in groove; a conductive block that contacts the conductive strips is embedded in the outer wall of the built-in block; the conductive block is connected to the auxiliary motor via a wiring harness; the length direction of the conductive strip is consistent with the length direction of the built-in groove; two secondary concave rings are rotatably connected to the outer wall of the output shaft; a secondary protrusion is electrically connected to the inner wall of the secondary concave ring; the secondary protrusion is electrically connected to the corresponding conductive strip.

10. A axially and radially adjustable permanent magnet eddy current coupler according to claim 2, characterized in that: The main motor is an eccentric motor; the eccentric output end of the main motor is located away from the strip groove; the auxiliary motor is a micro motor.

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