Multi-set multi-disk multi-air-gap linked adjustment type magnetic coupler

Abstract

Disclosed in the present invention is a multi-set multi-disk multi-air-gap linked adjustment type magnetic coupler, comprising multiple movably connected composite disks, each composite disk comprising a conductor rotor set and a permanent magnet rotor set, wherein the permanent magnet rotor set comprises two permanent magnet yoke iron disks connected to each other and movable relative to each other in an axial direction, and permanent magnets respectively arranged on two permanent magnet yoke iron disk surfaces; and the conductor rotor set comprises two conductor yoke iron disks fixedly connected to each other, and conductors respectively arranged on two conductor yoke iron disk surfaces. In the present invention, the conductor rotor sets are used as driving ends, the permanent magnet rotor sets are used as driven ends, and vice versa; each composite disk forms two air gap lengths and forms multiple sets of air gap lengths with other composite disks; in addition, a single set of driven end rotors are driven by a speed adjustment device to realize axial relative displacement, and multiple air gap lengths of the multi-set multi-disk magnetic coupler are subjected to linked adjustment, so that the purpose of speed adjustment or torque change of the magnetic coupler is realized. By means of the structure, a large electromagnetic torque and a high power can be obtained, and thus the structure can be applied to occasions where there is a large axial size but a limited radial size, such as on ocean platforms and large vessels.

Description

A multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler Technical Field

[0001] The invention belongs to the field of transmission technology in mechanical engineering, in particular to a multi-group multi-disc multi-air-gap linkage adjustable magnetic coupler. Background Art

[0002] In my country, pump and fan loads account for a high proportion of energy consumption in motors. Regulating the speed of the motor working machine by speed regulation is an energy-saving method, but the high-order harmonics generated have various adverse effects on the motor and power supply, and are difficult to maintain. The new magnetic transmission device, the magnetic coupling, has the advantages of being maintenance-free, energy-efficient, stable and reliable, and having overload protection, and is widely used in pumps and fans. However, in situations such as submarines and underwater tunnels where the axial dimension is large but the radial dimension is limited, the use of magnetic couplings is limited, and compared to traditional couplers, the load-carrying capacity of magnetic couplings is not strong. Therefore, reducing the radial length of the magnetic coupling and achieving high power and high torque output are important research directions for its application in offshore platforms and large ships.

[0003] Patent 201610573976.7 discloses a novel composite double-disc magnetic coupler comprising two axially magnetized Type I permanent magnet rotors, a radially magnetized Type II permanent magnet rotor, two conductor rotors, and a conductor ring. The conductor rotor, Type I permanent magnet rotor, Type II permanent magnet rotor and outer conductor ring, Type I permanent magnet rotor, and conductor rotor are sequentially installed from the input side. When the input shaft rotates, it drives the conductor rotor and conductor ring to rotate. The permanent magnet rotor then drives the output shaft to rotate based on the principle of electromagnetic induction. Speed ​​regulation is achieved by moving the permanent magnet rotor on the output shaft and adjusting the air gap lengths on both sides and the facing area of ​​the central permanent magnet. However, the permanent magnet yoke iron disk of this invention is designed with only rectangular through-holes, which prevents the permanent magnet installation arrangement from being changed according to actual conditions. Furthermore, during speed regulation, the three sets of permanent magnet rotors can only move axially in one direction, resulting in inconsistent air gap lengths on both sides, which affects the generated electromagnetic torque.

[0004] Patent 201810872097.3 discloses a novel adjustable-speed disc-type asynchronous magnetic coupling. This device features a conductor rotor mounted on a drive shaft. A permanent magnet rotor is located on both the master and slave sides of the conductor rotor. By moving the permanent magnet rotors on both sides, the air gap length between the permanent magnet rotor and the conductor rotor is simultaneously changed, achieving speed regulation. However, this invention only has two sets of permanent magnet rotors, forming only two air gaps with the conductor rotor, and this number cannot be increased. For higher power requirements, the magnetic coupling can only be increased in size radially, making it difficult to use in applications where radial dimensions are limited.

[0005] Summary of the Invention

[0006] In order to address the deficiencies in the prior art, the present invention proposes a multi-group, multi-disc, multi-air-gap linkage-adjustable magnetic coupler, which is composed of multiple groups of permanent magnet rotors, conductor rotors, and a speed control device. The speed control device drives a single group of permanent magnet rotors to move, thereby driving the movement of other permanent magnet rotors, so that multiple air gaps are jointly adjusted to achieve speed regulation of the magnetic coupler and obtain greater electromagnetic torque and power. The magnetic coupler can be applied to occasions such as marine platforms and large ships where the axial dimensions are large but the radial dimensions are limited.

[0007] The technical solutions adopted in the present invention are as follows:

[0008] A multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler, comprising:

[0009] Input shaft;

[0010] an output shaft, the output shaft being coaxially arranged with the input shaft;

[0011] A plurality of composite discs are sequentially arranged on the output shaft, each composite disc comprising a conductor rotor assembly, a permanent magnet rotor assembly, a gear rack mechanism and a spline sleeve;

[0012] The spline sleeve is sleeved on the output shaft and connected via a key;

[0013] The permanent magnet rotor assembly includes two permanent magnet yoke iron disks arranged opposite to each other and permanent magnets respectively arranged on the surfaces of the two permanent magnet yoke iron disks;

[0014] The conductor rotor assembly includes two conductor yoke disks arranged opposite to each other and conductors respectively arranged on the surfaces of the two conductor yoke disks;

[0015] In the same composite disk, the conductor yoke disk and the permanent magnet yoke disk, as well as the permanent magnet and the conductor on the same side are opposite to each other; and there is an air gap between the permanent magnet and the conductor;

[0016] In the same composite disk, one of the conductor rotor group and the permanent magnet rotor group serves as the active unit, and the other serves as the driven unit;

[0017] The power input end of the active unit is connected to the input shaft; the yoke iron plates in the same active unit and the yoke iron plates of adjacent active units are fixedly connected;

[0018] The driven unit is sleeved on the outside of the spline sleeve and is spline-connected to the spline sleeve; the yoke plates in the same driven unit are connected by a gear rack mechanism; and adjacent driven units are connected by a rocker slider mechanism;

[0019] A slider-crank mechanism connected to the power output of the driven unit.

[0020] Furthermore, the rack and pinion mechanism includes a first supporting disc, a rack and a gear; wherein the first supporting disc is mounted on a spline sleeve and is key-connected to the spline sleeve, a limit block is provided on the outer surface of the first supporting disc, two protrusions are provided on the limit block, the two protrusions are staggered along the axial direction, and guide rods are respectively provided on the protrusions, and the guide rods are arranged along the axial direction; there are two racks, one end of each rack is fixedly connected to the adjacent permanent magnet yoke disc, and the other end of each rack has a circular channel; the guide rod is inserted into the circular channel of the rack; a gear is installed between the two racks, and the gear is respectively engaged with the two racks for transmission.

[0021] Furthermore, a disc shell is mounted on the outside of the first supporting disc, and a groove corresponding to the limit block is opened on the disc shell. After the first supporting disc and the disc shell are assembled, the gear and the rack will be confined in the groove of the disc shell.

[0022] Furthermore, the rocker slider mechanism includes an upper slider, a fixed base and multiple rockers; the fixed base is fixedly mounted on the second support disc, the second support disc is mounted on the output shaft, and the second support disc and the output shaft are connected by a key; the fixed base is equipped with a support column, and the support column is arranged along the radial direction of the second support disc; the upper slider is mounted on the support column, and is hinged to one end of the first support member and one end of the second support member on the two side edges of the fixed base facing the permanent magnet yoke disc; the two side edges of the upper slider facing the permanent magnet yoke disc are hinged to one end of the first rocker and one end of the second rocker, and slide grooves are respectively provided on the first rocker and the second rocker; the other end of the first support member is inserted into the slide groove of the first rocker through a cylindrical pin, and the other end of the second support member is inserted into the slide groove of the second rocker through a cylindrical pin; the other end of the first rocker and the other end of the second rocker are respectively hinged to the two adjacent permanent magnet yoke discs.

[0023] Furthermore, the crank slider mechanism includes a double-row tapered roller bearing, a housing and a crank. The double-row tapered roller bearing is mounted on the outside of the permanent magnet yoke iron disk at the outermost side of the output end. The housing is arranged on the outside of the double-row tapered roller bearing, and the housing is connected to the crank. The housing is connected to the fixed sleeve through a coil spring, the fixed sleeve is mounted on the output shaft, and the fixed sleeve and the output shaft are connected by a key.

[0024] Furthermore, all the conductor yoke discs are connected in sequence through I-beams.

[0025] Furthermore, the conductor yoke iron disk is processed with yoke teeth distributed in an array along the circumferential direction, and the annular conductor is provided with fan-shaped grooves distributed in an array along the circumferential direction; the fan-shaped grooves and the yoke teeth cooperate with each other.

[0026] Furthermore, the conductor is annular, and an annular groove corresponding to the conductor is provided on the conductor yoke disk. The conductor is embedded in the annular groove of the conductor yoke disk, and the conductor yoke disk and the conductor are fixed by fasteners.

[0027] Furthermore, the permanent magnets on the permanent magnet yoke disk are arranged in a single layer or in two layers along the radial direction.

[0028] Furthermore, the permanent magnets in each layer are arranged with alternating N and S poles or in a 90° Halbach array.

[0029] Beneficial effects of the present invention:

[0030] (1) In the present invention, based on the principle of electromagnetic induction, contactless transmission of torque is achieved between the active disk and the driven disk, thereby avoiding problems such as friction, wear and vibration in the traditional transmission process and reducing losses in the transmission process; the load and the motor are separated, and by adjusting the air gap length between the active disk and the driven disk, the motor's light load starting, overload protection and stepless speed change functions are realized.

[0031] (2) The magnetic coupler of the present invention adopts a multi-group multi-disc structure, which can provide power through the servo motor on the output end side, drive the crank slider mechanism and adopt a series of mechanical connections to achieve the synchronous movement of multiple groups of permanent magnet rotors, so that the air gap between the multiple groups of permanent magnet rotors and the conductor rotor can be jointly adjusted to achieve speed regulation and high power and high torque output of the magnetic coupler.

[0032] (3) The magnetic coupler of the present invention adopts a multi-group multi-disc structure, which can effectively reduce the radial size, making the magnetic coupler suitable for occasions with large axial size but limited radial size. Therefore, it is also possible to design permanent magnets with smaller radial size, making the permanent magnets suitable for processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic structural diagram of a multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to the present invention.

[0034] Figure 2 is a diagram of the speed regulation principle.

[0035] Figure 3 is a diagram of the working limit position.

[0036] Figure 4 is a schematic diagram of the I-beam outer frame structure

[0037] Figure 5 is a diagram of the permanent magnet rotor and the conductor rotor.

[0038] Figure 6 is a diagram showing the spacing arrangement of double-layer permanent magnets.

[0039] Figure 7 is a diagram of a double-layer permanent magnet spaced aluminum retainer and a permanent magnet yoke disk.

[0040] Figure 8 is a diagram of a double-layer permanent magnet 90° Halbach array.

[0041] Figure 9 shows the aluminum retainer and permanent magnet yoke iron disk of the double-layer permanent magnet 90° Halbach array.

[0042] Figure 10 is a diagram showing a full arrangement of double-layer permanent magnets.

[0043] Figure 11 is a diagram showing the spacing arrangement of permanent magnets.

[0044] Figure 12 is a 90° Halbach array diagram of a permanent magnet

[0045] Figure 13 is a diagram showing a full arrangement of permanent magnets.

[0046] Figure 14 is a diagram of a slotted disc conductor rotor.

[0047] Figure 15 is a diagram of a solid disc conductor rotor.

[0048] Figure 16 is a schematic diagram of the gear rack mechanism structure.

[0049] Figure 17 is a schematic diagram of the rocker slider mechanism structure.

[0050] Figure numerals: 1, input shaft; 2, sleeve; 3, shaft end cover; 4, stud; 5, conductor yoke disc 1; 6, conductor 1; 7, hexagonal bolt; 8, hexagonal nut; 9, washer; 10, I-beam; 11, conductor 2; 12, conductor yoke disc 2; 13, conductor yoke disc 3; 14, conductor 3; 15, conductor 4; 16, conductor yoke disc 4; 17, permanent magnet yoke disc 4; 18, crank slider mechanism; 19, housing; 20, double-row tapered roller bearing; 21, coil spring; 22, fixed sleeve; 23, output shaft; 24, spline sleeve 2; 25, permanent magnet 4; 26, gear rack mechanism 2; 27, permanent magnet yoke disc 3; 28, permanent magnet 3; 29, rocker slider mechanism; 30, spline Key sleeve one; 31. Permanent magnet two; 32. Permanent magnet yoke iron plate two; 33. Gear rack mechanism one; 34. Permanent magnet yoke iron plate one; 35. Permanent magnet one; 36. Cross recessed countersunk screw; 37. Cylindrical pin; 38. Hexagon socket screw; 39. Retaining frame; 40. Hexagon socket screw; 41. First supporting disc; 42. Rack; 43. Gear end cover; 44. Cross recessed countersunk screw; 45. Connecting rod; 46. Gear; 47. Disc housing; 48. Cylindrical pin; 49. First rocker arm; 50. First support member; 51. Upper slider; 52. Second rocker arm; 53. Second support member; 54. Second supporting disc; 55. Fixed base; 56. Fixed block; 57. Support column; 58. Limit block; 59. Guide rod. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] The multi-group multi-disc multi-air-gap linkage adjustable magnetic coupler designed in the present application is composed of multiple composite disks. In this embodiment, the magnetic coupler composed of two composite disks is described in conjunction with FIG1 .

[0053] The magnetic coupler, shown in Figure 1, consists of a composite disc I, a composite disc II, and a speed control device. The two composite discs have identical structures. Each composite disc includes a conductor rotor assembly, a permanent magnet rotor assembly, a rack-and-pinion mechanism, and a spline sleeve. Each conductor rotor assembly contains two conductor yoke discs, each equipped with a conductor. Each permanent magnet rotor assembly contains two permanent magnet yoke discs, each equipped with a permanent magnet.

[0054] The composite disc can also be divided into an active unit and a driven unit. The power input end of the active unit is connected to the input shaft (1) and the input shaft (1) and the motor connected to the input shaft (1) drive the active unit to move; the driven unit also starts to move because of electromagnetic induction between the active unit and the driven unit.

[0055] In the design of this application, both the conductor rotor group and the permanent magnet rotor group in the composite disk can serve as active and passive units. That is, when the conductor rotor group serves as the active unit, the permanent magnet rotor group serves as the passive unit; conversely, when the permanent magnet rotor group serves as the active unit, the conductor rotor group serves as the passive unit. However, it should be noted that within the same magnetic coupler, the active units must be uniform. For example, all active units can be conductor rotor groups, or all active units can only be permanent magnet rotor groups.

[0056] As shown in FIG1 , in this embodiment, the conductor rotor group serves as the active unit, and the permanent magnet rotor group serves as the driven unit.

[0057] In this application, Composite Disc I and Composite Disc II have four conductor yoke discs and conductors mounted on each yoke disc. The four conductor yoke discs are connected to each other via I-beams 10 and connectors. Input shaft 1 is power-connected to the conductor yoke discs of Composite Disc I.

[0058] In the present application, compound disk I and compound disk II have a total of four permanent magnet yoke disks and permanent magnets arranged on the surface of each permanent magnet yoke disk. The four permanent magnet yoke disks are divided into two groups, and the two permanent magnet yoke disks in the same group are sleeved on the outside of the output shaft 23, and the two permanent magnet yoke disks on the sleeve are movable in the axial direction; the two groups of permanent magnet yoke disks are connected by a rocker slider mechanism 29. Each group of permanent magnet yoke disks is arranged between two adjacent conductor yoke disks, and the conductors on the conductor yoke disks are arranged opposite to the permanent magnets on the permanent magnet yoke disks, and there is an air gap between the adjacent conductors and permanent magnets. The right end of the permanent magnet rotor group is connected to the crank slider mechanism 18.

[0059] The speed regulating device includes a rocker slider mechanism 29 and a crank slider mechanism 18 arranged between the composite disk I and the composite disk II.

[0060] More specifically, the connection of the four conductor yoke disks is shown in Figure 4. The four conductor yoke disks are conductor yoke disk 1 5, conductor yoke disk 2 12, conductor yoke disk 3 13, and conductor yoke disk 4 16. Each of the four conductor yoke disks has the same structure, and a through-hole is provided in the center. I-beams 10 are placed between adjacent conductor yoke disks. Conductor yoke disk 1 5 has two through-holes uniformly spaced every 90° along its circumference. I-beams 10 have through-holes at their four corners. These are connected to adjacent conductor yoke disks using hexagonal bolts 7, hexagonal nuts 8, and washers 9, forming an outer frame.

[0061] More specifically, as shown in Figure 1, the left side of the leftmost conductor yoke disc is fixedly connected to sleeve 2 via studs 4. Sleeve 2 is fitted over input shaft 1, with a keyed connection between sleeve 2 and input shaft 1. Sleeve 2 is axially positioned and secured using the input shaft 1's shoulder and end cap 3 on either side.

[0062] More specifically, referring to Figure 14, using conductor yoke disk 15 and conductor 16 as examples, the other three conductor yoke disks adopt the same design. An array of fan-shaped slots is circumferentially arranged on the annular conductor 16; and an array of fan-shaped slots is circumferentially arranged on conductor yoke disk 15. The fan-shaped slots cooperate with the yoke teeth.

[0063] More specifically, referring to Figure 15 , using conductor yoke disk 15 and conductor 16 as examples, the other three conductor yoke disks adopt the same design. Conductor 16 is configured as a ring, with an annular groove corresponding to conductor 16 defined in conductor yoke disk 15. Conductor 16 is directly inserted into the annular groove of conductor yoke disk 15, and is secured to conductor 16 using hexagon socket head cap screws 38.

[0064] More specifically, the four permanent magnet yoke discs are permanent magnet yoke disc 4 17, permanent magnet yoke disc 3 27, permanent magnet yoke disc 2 32, and permanent magnet yoke disc 1 34. Referring to FIG5 , the permanent magnet yoke discs are composed of an annular portion and a disc-shaped portion. The disc-shaped portion is disposed on the outer surface of the annular portion, and a permanent magnet is disposed on one side of the disc-shaped portion. The annular portion is sleeved onto the exterior of the spline sleeve. A gap exists between the annular portion of the permanent magnet yoke disc and the conductor yoke disc.

[0065] The spline sleeve is mounted on the outside of the output shaft 23 and the two are driven by a key; an external spline is set on the outside of the spline sleeve, and an internal spline is set inside the annular part of the permanent magnet yoke iron plate, thereby realizing a spline connection between the spline sleeve and the permanent magnet yoke iron plate; therefore, a radial connection between the permanent magnet yoke iron plate and the spline sleeve can be realized, and at the same time, the permanent magnet yoke iron plate can move axially on the spline sleeve.

[0066] In the present application, two permanent magnet yoke disks are set as a group. As shown in Figure 1, a first permanent magnet rotor group is formed by permanent magnet yoke disk 1 34 and permanent magnet yoke disk 2 32, and a second permanent magnet rotor group is formed by permanent magnet yoke disk 3 27 and permanent magnet yoke disk 4 17. The two permanent magnet yoke disks in the same permanent magnet rotor group are connected by a rack and pinion mechanism. For example, permanent magnet yoke disk 1 34 and permanent magnet yoke disk 2 32 in the first permanent magnet rotor group are connected by a rack and pinion mechanism 1 33, while permanent magnet yoke disk 3 27 and permanent magnet yoke disk 4 17 in the second permanent magnet rotor group are connected by a rack and pinion mechanism 2 26.

[0067] 16 , the rack and pinion mechanism includes a first support disc 41, a rack 42 and a gear 46; wherein, the first support disc 41 is mounted on a spline sleeve and key-connected to the spline sleeve; a limit block 58 is provided on the outer surface of the first support disc 41; two protrusions are provided on the limit block 58; the two protrusions are staggered along the axial direction, and guide rods 59 are provided on the protrusions respectively, and the guide rods 59 are arranged along the axial direction; there are two racks 42, one end of each rack 42 is fixedly connected to the adjacent permanent magnet yoke disc, and the other end of each rack 42 is provided with a circular channel; the guide rod 59 is inserted into the circular channel of the rack 42; a gear 46 is installed between the two racks 42, and the gear 46 is respectively engaged with the two racks 42 for transmission.

[0068] In the present application, in order to limit the circumferential movement of the gear 46 and the rack 42, a disc shell 47 is mounted on the outside of the first support disc 41. The disc shell 47 has a groove corresponding to the limit block 58. After the first support disc 41 and the disc shell 47 are assembled, the gear 46 and the rack 42 will be confined in the groove of the disc shell 47.

[0069] More specifically, gear 46 is mounted on connecting rod 45, which is configured as a stepped shaft. The end of connecting rod 45 with a larger diameter can limit the movement of gear 46. At the other end of connecting rod 45, gear 46 is fixed to connecting rod 45 using gear end cap 43 and cross recessed countersunk screw 44. A positioning hole is provided on limit block 58, and during installation, gear end cap 43 falls into the positioning hole.

[0070] More specifically, a through hole is radially opened at the groove of the disc shell 47. During installation, the disc shell 47 can be first mounted on the outside of the first supporting disc 41, and the gear 42 on the connecting rod 45 can be installed on the first supporting disc 41 through the through hole at the groove.

[0071] More specifically, the limiting block 58 and the first supporting disc 41 can be separate and fixedly connected by fasteners or the like, or can be an integrated structure.

[0072] In this application, the first permanent magnet rotor group is arranged between two conductor yoke disks, as shown in Figure 2, and the composite disk I is composed of the conductor yoke disk 1 5, the first permanent magnet rotor group, and the conductor yoke disk 2 12, and the composite disk II is composed of the conductor yoke disk 3 13, the second permanent magnet rotor group, and the conductor yoke disk 4 16.

[0073] In the present application, the rocker slider mechanism 29 connecting the first permanent magnet rotor group and the second permanent magnet rotor group is shown in Figure 17. Multiple rocker slider mechanisms 29 with equal distances can be set between the first permanent magnet rotor group and the second permanent magnet rotor group to connect more permanent magnet rotor groups. In the present application, only one rocker slider mechanism 29 is set.

[0074] The rocker slider mechanism 29 includes a slider, a rocker, and connectors. Specifically, the slider includes an upper slider 51 and a fixed base 55. The fixed base 55 is fixedly mounted on a second support disc 54, which is mounted on the output shaft 23 and connected to the output shaft 23 via a key. A support column 57 is mounted on the fixed base 55 and is arranged radially along the second support disc 54. The upper slider 51 is mounted on the support column 57 and can move up and down along the support column 57.

[0075] The two side edges of the fixed base 55 facing the permanent magnet yoke disk are hinged to one end of the first support member 50 and one end of the second support member 53 respectively; the two side edges of the upper slider 51 facing the permanent magnet yoke disk are hinged to one end of the first rocker arm 49 and one end of the second rocker arm 52 respectively, and sliding grooves are respectively provided on the first rocker arm 49 and the second rocker arm 52; the other end of the first support member 50 is inserted into the sliding groove of the first rocker arm 49 through a cylindrical pin, and the other end of the second support member 53 is inserted into the sliding groove of the second rocker arm 52 through a cylindrical pin; the other end of the first rocker arm 49 and the other end of the second rocker arm 52 are hinged to the permanent magnet yoke disk 2 32 and the permanent magnet yoke disk 3 27 respectively. In the present application, a fixing block 56 is fixedly installed on the opposite side wall surfaces of the permanent magnet yoke disk 2 32 and the permanent magnet yoke disk 3 27, and the other end of the first rocker arm 49 and the other end of the second rocker arm 52 can be rotatably connected to the fixing blocks 56 on the permanent magnet yoke disk 2 32 and the permanent magnet yoke disk 3 27 respectively through the cylindrical pin 48.

[0076] In this application, the permanent magnets on the four permanent magnet yoke iron disks adopt the same installation arrangement. According to actual conditions, the installation arrangement of the permanent magnet yoke iron disks is as follows:

[0077] (1) As shown in Figures 6 and 7, the permanent magnets are divided into two layers along the radial direction. The permanent magnets are arranged with alternating N and S poles, and the magnetization direction is opposite to the axial direction. A retainer 39 is fixedly connected to the permanent magnet yoke iron disk. The permanent magnets are installed in the retainer 39 at intervals. The retainer 39 is fixed to the permanent magnet yoke iron disk by hexagon socket screws 40;

[0078] (2) As shown in Figures 8 and 9, the permanent magnets are divided into two layers along the radial direction. The permanent magnets are arranged in a 90° Halbach array. The magnetization directions within one cycle along the circumferential direction are left, top, right, and bottom. The inner and outer layers of aluminum retainers are fixedly connected to the permanent magnet yoke disk. The two layers of permanent magnets are fully installed and radially fixed through the inner permanent magnet yoke disk and the outer two layers of aluminum retainers respectively.

[0079] (3) As shown in Figure 10, the permanent magnets are divided into two layers along the radial direction. The permanent magnets are arranged with N and S poles alternately, and the magnetization direction is opposite to the axial direction. The inner and outer layers of aluminum retainers are fixedly connected to the permanent magnet yoke disk. The two layers of permanent magnets are fully installed and radially fixed through the inner permanent magnet yoke disk and the outer two layers of aluminum retainers respectively;

[0080] (4) As shown in Figure 11, the permanent magnets are arranged with N and S poles alternately, and the magnetization direction is opposite to the axial direction. An aluminum holder is fixedly connected to the permanent magnet yoke iron disk, and the permanent magnets are installed in the aluminum holder at intervals;

[0081] (5) As shown in Figure 12, the permanent magnets are arranged in a 90° Halbach array, and the magnetization directions within one cycle are left, up, right, and down along the circumferential direction. The permanent magnets are tightly adhered to the permanent magnet yoke iron disk, and the permanent magnets are radially fixed by the permanent magnet yoke iron disk;

[0082] (6) As shown in FIG13 , the permanent magnets are arranged in a full-coverage arrangement with N and S poles installed alternately, and the magnetization direction is opposite to the axial direction. The permanent magnets are tightly adhered to the permanent magnet yoke iron disk, and the permanent magnets are radially fixed by the permanent magnet yoke iron disk.

[0083] In this application, the crank slider mechanism 18 includes a double-row tapered roller bearing 20, a housing 19, and a crank. The double-row tapered roller bearing 20 is mounted on the outside of the annular portion of the rightmost permanent magnet yoke iron disk 17. The housing 19 is disposed on the outside of the double-row tapered roller bearing 20. The transition fit between the housing 19 and the outer ring of the double-row tapered roller bearing 20 is zero speed, while the transition fit between the permanent magnet yoke iron disk 17 and the inner ring of the double-row tapered roller bearing 20 is the same output speed. The housing 19 is connected to the crank. In addition, the housing 19 is connected to a fixed sleeve 22 via a coil spring 21. The fixed sleeve 22 is mounted on the output shaft 23 and is keyed to the output shaft 23. The fixed sleeve 22 is axially positioned and fixed on both sides by round nuts.

[0084] The working principle of the multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler proposed in this invention is as follows:

[0085] Taking two composite disks as an example, when the crank slider mechanism 18 is at the rightmost end and remains axially fixed, the input shaft 1 is driven and rotated by the power source, and the input shaft 1 drives the outer frame composed of 4 conductor yoke disks, while driving the conductors on the conductor yoke disks to rotate synchronously.

[0086] Each rotating conductor produces relative motion with the permanent magnet on the permanent magnet yoke disk opposite to each conductor; based on the principle of electromagnetic induction, the four groups of conductors and the rotor generate induced current, and the induced magnetic field generated by the induced current interacts with the permanent magnet to generate electromagnetic torque, driving the four permanent magnet yoke disks to rotate synchronously, thereby driving the output shaft 23 to rotate synchronously.

[0087] Speed ​​regulation principle:

[0088] In conjunction with Figures 2 and 3, when the crank slider mechanism 18 is at the rightmost end, the crank slider mechanism 18 and the permanent magnet yoke iron plate 4 17 are driven to move axially to the left, the gear 46 on the gear rack mechanism 26 rotates the rack 42 to move, and at the same time, the rack 42 drives the permanent magnet yoke iron plate 3 27 to move axially to the right on the spline sleeve 2 26. When the permanent magnet yoke iron plate 3 27 moves axially, the lower end of the second rocker 52 moves axially to the right, and the entire second rocker 52 rotates counterclockwise, driving the upper slider 51 to move axially inward along the support column 57. The first rocker 49 is driven to rotate clockwise at the same time, and the lower end of the rocker 49 drives the permanent magnet yoke disk 2 32 to move axially to the left on the spline sleeve 1 30. When the permanent magnet yoke disk 2 32 moves axially, the gear on the gear rack mechanism 1 33 rotates and moves, and at the same time drives the permanent magnet yoke disk 1 34 to move axially to the right on the spline sleeve 1 30, so that the four groups of permanent magnet rotors move synchronously, and the air gaps between the four groups of permanent magnet rotors and the conductor rotors change at the same time. Each group generates the same electromagnetic torque, thereby producing a speed regulation effect.

[0089] When the crank slider mechanism 18 is at the far left end, the crank slider mechanism 18 and the permanent magnet yoke iron plate 4 17 are driven to move axially to the right, the gear 46 on the gear rack mechanism 2 26 rotates the rack 42 to move, and at the same time, the rack 42 drives the permanent magnet yoke iron plate 3 27 to move axially to the left on the spline sleeve 2 26. When the permanent magnet yoke iron plate 3 27 moves axially, the lower end of the second rocker 52 moves axially to the left, and the entire second rocker 52 rotates clockwise, driving the upper slider 51 to move axially outward along the support column 57. The first rocker 49 is driven to rotate counterclockwise, and the lower end of the rocker 49 drives the permanent magnet yoke disk 2 32 to move axially to the right on the spline sleeve 1 30. When the permanent magnet yoke disk 2 32 moves axially, the gear on the gear rack mechanism 1 33 rotates and moves, and at the same time drives the permanent magnet yoke disk 1 34 to move axially to the left on the spline sleeve 1 30, so that the four groups of permanent magnet rotors move synchronously, and the air gaps between the four groups of permanent magnet rotors and the conductor rotors change at the same time. Each group generates the same electromagnetic torque, thereby producing a speed regulation effect.

[0090] When the slider-crank mechanism 18 is in any intermediate position, the slider-crank mechanism is driven to move axially according to the speed regulation requirement.

[0091] In the embodiment of the present application, only two composite disks are used for illustration. Based on the design of the present application, the power of the magnetic coupler can be increased by adding a rocker slider mechanism 29 and a composite disk.

[0092] The above embodiments are intended only to illustrate the design concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of protection of the present invention is not limited to the above embodiments. Therefore, any equivalent changes or modifications made based on the principles and design concepts disclosed in the present invention are within the scope of protection of the present invention.

Claims

1. A multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler, characterized in that: include: Input shaft (1); An output shaft (23), the output shaft (23) being coaxially arranged with the input shaft (1); A plurality of composite discs are sequentially arranged on the output shaft (23), each composite disc comprising a conductor rotor group, a permanent magnet rotor group, a gear rack mechanism and a spline sleeve; The spline sleeve is sleeved on the output shaft (23) and connected via a key; The permanent magnet rotor assembly includes two permanent magnet yoke iron disks arranged opposite to each other and permanent magnets respectively arranged on the surfaces of the two permanent magnet yoke iron disks; The conductor rotor assembly includes two conductor yoke disks arranged opposite to each other and conductors respectively arranged on the surfaces of the two conductor yoke disks; In the same composite disk, the conductor yoke disk and the permanent magnet yoke disk, as well as the permanent magnet and the conductor on the same side are opposite to each other; and there is an air gap between the permanent magnet and the conductor; In the same composite disk, one of the conductor rotor group and the permanent magnet rotor group serves as the active unit, and the other serves as the driven unit; The power input end of the active unit is dynamically connected to the input shaft (1); the yoke iron disks in the same active unit and the yoke iron disks of adjacent active units are fixedly connected; The driven unit is sleeved outside the spline sleeve and is spline-connected to the spline sleeve; the yoke iron plates in the same driven unit are connected via a gear rack mechanism; and adjacent driven units are connected via a rocker slider mechanism (29); A crank slider mechanism (18) is connected to the power output end of the driven unit.

2. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 1, characterized in that: The rack and pinion mechanism comprises a first supporting disc (41), a rack (42) and a gear (46); wherein the first supporting disc (41) is sleeved on a spline sleeve and key-connected with the spline sleeve; a limit block (58) is provided on the outer surface of the first supporting disc (41); two convex portions are provided on the limit block (58); the two convex portions are staggered along the axial direction; guide rods (59) are respectively provided on the convex portions; the guide rods (59) are arranged along the axial direction; two racks (42) are provided, one end of each rack (42) is fixedly connected to the adjacent permanent magnet yoke disc, and the other end of each rack (42) is provided with a circular channel; the guide rod (59) is inserted into the circular channel of the rack (42); a gear (46) is provided between the two racks (42), and the gear (46) is respectively engaged with the two racks (42) for transmission.

3. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 2, characterized in that: A disc housing (47) is mounted on the outside of the first supporting disc (41). The disc housing (47) is provided with a groove corresponding to the limit block 58. After the first supporting disc (41) and the disc housing (47) are assembled, the gear (46) and the rack (42) are confined in the groove of the disc housing (47).

4. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 1, characterized in that: The rocker slider mechanism (29) comprises an upper slider (51), a fixed base (55) and a plurality of rockers; the fixed base (55) is fixedly mounted on a second support disc (54), the second support disc (54) is sleeved on the output shaft (23), and the second support disc (54) and the output shaft (23) are connected via a key; a support column (57) is mounted on the fixed base (55), and the support column (57) is arranged along the radial direction of the second support disc (54); the upper slider (51) is sleeved on the support column (57), and the two sides of the fixed base (55) facing the permanent magnet yoke iron disk are respectively connected to the first support member ( The first support member (50) is hinged to one end of the first rocker (49) and one end of the second rocker (52); the two side edges of the upper slider (51) facing the permanent magnet yoke disk are hinged to one end of the first rocker (49) and one end of the second rocker (52), and the first rocker (49) and the second rocker (52) are respectively provided with a sliding groove; the other end of the first support member (50) is inserted into the sliding groove of the first rocker (49) through a cylindrical pin, and the other end of the second support member (53) is inserted into the sliding groove of the second rocker (52) through a cylindrical pin; the other end of the first rocker (49) and the other end of the second rocker (52) are respectively hinged to two adjacent permanent magnet yoke disks.

5. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 1, characterized in that: The crank slider mechanism (18) comprises a double-row tapered roller bearing (20), a housing (19) and a crank. The double-row tapered roller bearing (20) is sleeved on the outside of the permanent magnet yoke iron disk at the outermost side of the output end. The housing (19) is arranged on the outside of the double-row tapered roller bearing (20), and the housing (19) is connected to the crank. The housing (19) is connected to a fixed sleeve (22) through a coil spring (21). The fixed sleeve (22) is sleeved on the output shaft (23), and the fixed sleeve (22) and the output shaft (23) are connected by a key.

6. A multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to any one of claims 1 to 5, characterized in that: All the conductor yoke iron discs are connected in sequence through I-beams (10).

7. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 6, characterized in that: The conductor yoke iron disk is processed with array-distributed yoke teeth along the circumferential direction, and the annular conductor is provided with array-distributed fan-shaped grooves along the circumferential direction; the fan-shaped grooves and the yoke teeth cooperate with each other.

8. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 6, characterized in that: The conductor is annular, and an annular groove corresponding to the conductor is provided on the conductor yoke disk. The conductor is embedded in the annular groove of the conductor yoke disk, and the conductor yoke disk and the conductor are fixed by fasteners.

9. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 6, characterized in that: The permanent magnets on the permanent magnet yoke disk are arranged in a single layer or in two layers along the radial direction.

10. The multi-group, multi-disc, multi-air-gap linkage adjustable magnetic coupler according to claim 9, characterized in that: The permanent magnets in each layer are arranged with alternating N and S poles or in a 90° Halbach array.