Multi-group composite permanent magnet eddy current coupler

Abstract

The invention provides a multi-group composite permanent magnet eddy current coupler, and relates to the technical field of magnetic couplers, and the coupler comprises an inner magnetic steel sleeve which is formed by combining shells symmetrically arranged on the left side and the right side, and a plurality of matching cavities are formed in the inner magnetic steel sleeve; the number of the outer magnetic steel discs is consistent with the number of the matching cavities, the outer magnetic steel discs and the matching cavities are in one-to-one correspondence, the outer magnetic steel discs are connected with the same power input shaft, a fixed outer magnetic steel disc is arranged in the interlayer cavity, and movable outer magnetic steel discs are arranged in the upper telescopic cavity and the lower telescopic cavity. The two modes can be switched in the working process, so that the coupler can have the advantages of straight shaft transmission and magnetic coupling transmission, larger torque can be input in the starting process through the transmission mode, the transmission mode can be converted into a non-contact coupling state in the rotating process, and therefore damage to an input shaft in the accidental braking process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic couplers, in particular to a multi-group composite permanent magnet eddy current coupler. Background Art

[0002] A disc-type magnetic motor with a publication number of "CN104753396A" in the prior art is provided with a stator yoke / stator body, a permanent magnet assembly with adjustable magnetic pole polarity and its corresponding magnetic shoe, a permanent magnet rotation drive assembly and its drive controller. The drive controller controls the permanent magnet rotation drive assembly to make the NS poles of each group of permanent magnets rotate or change the magnetic pole direction in order or according to the set rules, and assemble to form at least one group of permanent magnet dipole pairs, so as to form a permanent magnet rotating magnetic field or an alternating permanent magnet rotating magnetic field rotating counterclockwise / clockwise in the coupling air gap between the stator and the rotor, and drive the rotor to output torque. The device can overcome the shortcomings of various existing electric motors or internal combustion engines, such as high energy consumption and difficulty in speed regulation of high-voltage and high-power electric motors, and provide power for various load equipment.

[0003] However, the above-mentioned device still has obvious defects during use: although the above-mentioned device can achieve high load and high torque, the above-mentioned device cannot adjust the torque, and its working mode only has one torque transmission mode, magnetic coupling. For a high-torque electric motor or internal combustion engine, a large torque is required when starting, otherwise it may cause the magnetic coupling to slip, thereby affecting the effective output of power. Summary of the invention

[0004] The object of the present invention is to provide a plurality of composite permanent magnet eddy current couplers to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-group composite permanent magnet eddy current coupler, comprising:

[0007] An inner magnetic steel sleeve, wherein the inner magnetic steel sleeve is composed of outer shells symmetrically arranged on the left and right sides, and a power output shaft is integrally formed at one end of the inner magnetic steel sleeve, and a plurality of matching chambers are formed in the inner magnetic steel sleeve;

[0008] The number of the outer magnetic steel disks is consistent with the number of the matching chambers and corresponds one to one. The outer magnetic steel disks are all connected to the same power input shaft. The power input shaft extends outward through the shaft hole opened at one end of the inner magnetic steel sleeve away from the power output shaft and is connected to the driving mechanism through a coupling; wherein,

[0009] The matching chamber is composed of telescopic chambers at the upper and lower ends and at least one interlayer chamber arranged therebetween, a fixed external magnetic steel disk is arranged in the interlayer chamber, and movable external magnetic steel disks are arranged in the upper and lower telescopic chambers, and the movable external magnetic steel disks on the upper and lower sides synchronously move toward or away from each other, and the coupling magnetic strength between the movable external magnetic steel disk and the inner magnetic steel sleeve is adjusted by the movement toward or away from each other, and the mechanism that drives the upper and lower movable external magnetic steel disks to move toward or away from each other synchronously is a coupling strength adjustment mechanism;

[0010] A mating block is also telescopically arranged at the bottom of the movable outer magnetic steel disk away from the side of the power input shaft, and the mating block is movably matched with the embedding groove provided on the inner magnetic steel sleeve. When the mating block is matched with the embedding groove of the inner magnetic steel sleeve, the inner magnetic steel sleeve and the movable outer magnetic steel disk are contact-matched. When the mating block is disengaged from the embedding groove of the inner magnetic steel sleeve, the inner magnetic steel sleeve and the movable outer magnetic steel disk are magnetically coupled and connected. A telescopic mechanism for controlling the telescopic movement of the mating block is arranged inside the movable outer magnetic steel disk.

[0011] Preferably, the power input shaft includes a shaft section and a magnetic steel disk connecting section coaxially fixed thereto, the diameter of the magnetic steel disk connecting section is larger than the diameter of the shaft section, telescopic rod bodies are telescopically arranged at both ends of the magnetic steel disk connecting section, the telescopic rod bodies on both sides are respectively fixedly connected to the movable external magnetic steel disks on the upper and lower sides, the close sides of the telescopic rod bodies on the upper and lower sides are respectively connected to the corresponding lifting pistons, the lifting pistons are slidingly arranged in the hollow slide groove opened in the magnetic steel disk connecting section, and an oil pump ring is also fixedly installed on the hollow slide groove between the lifting pistons on both sides, the oil pump ring is fixedly connected to the shaft section and communicated with the oil pump channel opened in the shaft section, the oil pump channel is communicated with an external oil pump sleeve ring, and the oil pump is used to pump hydraulic oil into the oil pump sleeve ring to adjust the position of the lifting pistons on both sides, and then the spacing between the movable external magnetic steel disks on the upper and lower sides is adjusted.

[0012] Preferably, spring grooves are provided on both sides of the hollow slide groove, and extrusion springs are installed in the spring grooves. One end of the extrusion spring abuts against the spring groove and the other end abuts against the lifting piston. The extrusion spring is used to push the lifting pistons on both sides toward the pump oil ring in the absence of external force.

[0013] Preferably, the interlayer chamber is provided with one, and the fixed outer magnetic steel disk fixing sleeve is arranged on the outside of the magnetic steel disk connecting section.

[0014] Preferably, a pair of matching blocks are provided, and the matching blocks are respectively fixedly connected to the eccentric rod of the bevel gear, the eccentric rods of the bevel gear on both sides are meshed with the active bevel gear, and the active bevel gear is also coaxially fixed with the worm gear, the worm gear is matched with the worm gear arranged on both sides, and a driving gear is also fixedly installed on the worm gear, the driving gear is meshed with the adjusting gear arranged on the inner magnetic steel sleeve, and the adjusting gear is fixedly connected to the driving shaft of the adjusting motor, and the matching block is arranged in the receiving groove, and the matching block is retracted or protruded from the receiving groove during the rotation of the eccentric rod of the bevel gear, and when the matching block protrudes from the receiving groove, it cooperates with the embedded groove when the movable outer magnetic steel disk is close to the magnetic steel disk connecting section.

[0015] Preferably, magnetic blocks are arranged in a ring shape on the inner magnetic steel sleeve and the outer magnetic steel disk, and the N poles and S poles of the magnetic blocks are arranged alternately.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention has two working modes, namely, a contact transmission mode and a non-contact magnetic coupling mode. The two modes can be switched during the working process, so that the coupler can have the advantages of both direct-axis transmission and magnetic coupling transmission. For mechanisms that require large torque output, this transmission mode can input a larger torque during the starting process and convert it into a non-contact coupling state during the rotation process, thereby reducing damage to the input shaft during accidental braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the magnetic block distribution structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the non-contact magnetic coupling mode of the present invention;

[0020] Figure 3 It is a schematic diagram of the state in which the movable outer magnetic steel disk is extended outwards in the non-contact magnetic coupling mode of the present invention;

[0021] Figure 4 It is a schematic diagram of the contact transmission mode of the present invention;

[0022] Figure 5 It is a schematic diagram of the matching state of the adjustment gear and the driving gear of the present invention;

[0023] Figure 6 It is a schematic diagram of the storage and protruding states of the matching block of the present invention.

[0024] In the figure: 1 inner magnetic steel sleeve, 2 outer shell, 3 power output shaft, 4 fixed outer magnetic steel disk, 5 power input shaft, 6 shaft hole, 7 telescopic chamber, 8 sandwich chamber, 9 matching block, 10 embedded groove, 11 shaft rod section, 12 magnetic steel disk connecting section, 13 telescopic rod body, 14 lifting piston, 15 hollow slide groove, 16 pump oil ring, 17 pump oil sleeve ring, 18 spring groove, 19 extrusion spring, 20 helical gear eccentric rod, 21 active helical gear, 22 worm gear, 23 worm, 24 driving gear, 25 adjusting gear, 26 storage groove, 27 magnetic block, 28 movable outer magnetic steel disk. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-6 , the present invention provides a technical solution:

[0027] Embodiment 1:

[0028] A multi-group composite permanent magnet eddy current coupler, comprising:

[0029] The inner magnetic steel sleeve 1 is composed of a shell 2 symmetrically arranged on the left and right sides. A power output shaft 3 is also integrally formed at one end of the inner magnetic steel sleeve 1. A plurality of matching chambers are formed in the inner magnetic steel sleeve 1.

[0030] The number of external magnetic steel disks is consistent with the number of matching chambers and corresponds one to one. The external magnetic steel disks include fixed external magnetic steel disks and movable external magnetic steel disks. The external magnetic steel disks are connected to the same power input shaft 5. The power input shaft 5 extends outward through the shaft hole 6 opened at one end of the internal magnetic steel sleeve 1 away from the power output shaft 3 and is connected to the driving mechanism through a coupling; wherein,

[0031] The matching chamber is composed of telescopic chambers 7 at the upper and lower ends and at least one interlayer chamber 8 arranged therebetween. A fixed external magnetic steel disk 4 is arranged in the interlayer chamber 8. A movable external magnetic steel disk 28 is arranged in the upper and lower telescopic chambers 7. The movable external magnetic steel disks 28 at the upper and lower sides move toward or away from each other synchronously. The coupling magnetic strength between the movable external magnetic steel disk 28 and the inner magnetic steel sleeve 1 is adjusted by moving toward or away from each other. The mechanism that drives the upper and lower movable external magnetic steel disks 28 to move toward or away from each other synchronously is a coupling strength adjustment mechanism.

[0032] A mating block 9 is also telescopically arranged at the bottom of the movable outer magnetic steel disk 28 away from the side of the power input shaft 5. The mating block 9 is movably matched with the embedding groove 10 provided on the inner magnetic steel sleeve 1. When the mating block 9 is matched with the embedding groove 10 of the inner magnetic steel sleeve 1, the inner magnetic steel sleeve 1 and the movable outer magnetic steel disk 28 are contact-matched. When the mating block 9 is disengaged from the embedding groove 10 of the inner magnetic steel sleeve 1, the inner magnetic steel sleeve 1 and the movable outer magnetic steel disk 28 are magnetically coupled and connected. A telescopic mechanism for controlling the telescopic movement of the mating block 9 is arranged inside the movable outer magnetic steel disk 28.

[0033] In this embodiment, a plurality of matching chambers are formed in the inner magnetic steel sleeve 1, and the number of the outer magnetic steel disks is consistent with the number of the matching chambers and corresponds one to one. Referring to the drawings of the specification, it can be seen that in this embodiment, a structural setting of three matching chambers is selected, wherein the two outermost matching chambers are telescopic chambers 7, and the middle one is an interlayer chamber 8. The upper and lower telescopic chambers 7 are both provided with movable outer magnetic steel disks 28, and the interlayer chamber 8 is provided with a fixed outer magnetic steel disk 4. Since the fixed outer magnetic steel disk 4 cannot move along the axial direction, it can form a stable magnetic coupling strength with the inner magnetic steel sleeve 1, but the movable outer magnetic steel disks 28 on the upper and lower sides can translate and slide toward or away from each other along the axial direction. Therefore, during the translational sliding process of the movable outer magnetic steel disk 28, the magnetic coupling strength between the inner magnetic steel sleeve 1 and the outer magnetic steel disk can be adjusted. Such a setting is particularly suitable for mechanical structures that need to output large torque. In addition, since the transmission mechanism needs to output during the startup process, The invention relates to a method for producing a large torque, wherein the outer magnetic steel disk 28 is movable and the outer magnetic steel disk 28 is movable, and the outer magnetic steel disk 28 is movable and the outer magnetic steel disk 28 is movable.

[0034] Embodiment 2:

[0035] The power input shaft 5 includes a shaft section 11 and a magnetic steel disk connecting section 12 coaxially fixedly connected thereto. The diameter of the magnetic steel disk connecting section 12 is larger than that of the shaft section 11. Telescopic rod bodies 13 are telescopically arranged at both ends of the magnetic steel disk connecting section 12. The telescopic rod bodies 13 on both sides are respectively fixedly connected to the movable external magnetic steel disks 28 on the upper and lower sides. The adjacent sides of the telescopic rod bodies 13 on the upper and lower sides are respectively connected to the corresponding lifting pistons 14. The lifting pistons 14 are slidably arranged in the hollow slide grooves 15 opened in the magnetic steel disk connecting section 12. An oil pumping ring 16 is also fixedly installed on the hollow slide groove 15 between the lifting pistons 14 on both sides. The oil pumping ring 16 is fixedly connected to the shaft section 11 and communicated with the oil pumping channel opened in the shaft section 11. The oil pumping channel is communicated with the external oil pumping sleeve 17. The oil pump is used to pump hydraulic oil into the oil pumping sleeve 17 to adjust the positions of the lifting pistons 14 on both sides, thereby adjusting the spacing between the movable external magnetic steel disks 28 on the upper and lower sides.

[0036] In this embodiment, a driving mechanism is further disclosed for driving the movable external magnetic steel disks 28 on both sides to move toward or away from each other synchronously. The hydraulic oil is pumped into and extracted from the hollow slide groove 15 through the oil pumping ring 17, thereby pushing the lifting piston 14 in the hollow slide groove 15 to move toward or away from each other, and finally achieving the purpose of driving the movable external magnetic steel disk 28 to move. The oil pumping ring 17 is connected to the external oil pump mechanism through a pipeline, which can realize the drive during the rotation of the power input shaft 5, thereby realizing torque regulation.

[0037] Embodiment three:

[0038] Spring grooves 18 are also provided on both sides of the hollow slide groove 15, and extrusion springs 19 are installed in the spring grooves 18. One end of the extrusion spring 19 abuts against the spring groove 18 and the other end abuts against the lifting piston 14. The extrusion spring 19 is used to push the lifting pistons 14 on both sides toward the pump oil ring 16 without external force.

[0039] In this embodiment, the arrangement of the extrusion spring 19 can ensure that the pressure on the lifting pistons 14 on both sides is more stable, thereby ensuring that the extension or contraction of the lifting pistons 14 on both sides is synchronized.

[0040] Embodiment 4:

[0041] A pair of matching blocks 9 are provided, and a pair of matching blocks 9 are respectively fixedly connected to the bevel gear eccentric rod 20, the bevel gear eccentric rod 20 on both sides meshes with the active bevel gear 21, the active bevel gear 21 is also coaxially fixed with the worm gear 22, the worm gear 22 cooperates with the worm 23 arranged on both sides, and a driving gear 24 is also fixedly installed on the worm 23, the driving gear 24 is meshed with the adjusting gear 25 arranged on the inner magnetic steel sleeve 1, and the adjusting gear 25 is fixedly connected to the driving shaft of the adjusting motor, and the matching block 9 is arranged in the receiving groove 26. The matching block 9 is retracted or protruded from the receiving groove during the rotation of the bevel gear eccentric rod 20. When the matching block 9 protrudes from the receiving groove 26, it cooperates with the embedded groove 10 when the movable outer magnetic steel disk 28 is close to the magnetic steel disk connecting section 12.

[0042] In this embodiment, a driving mechanism for driving the matching block 9 to rotate is further disclosed, which requires the telescopic movement of the movable external magnetic steel disk 28 to cooperate during the adjustment process. The telescopic mechanism of the movable external magnetic steel disk 28 refers to the adjustment method in Example 2. When the movable external magnetic steel disk 28 moves away from each other so that the adjusting gear 25 cooperates with the driving gear 24, the rotation of the driving gear 24 drives the worm 23 to rotate, and the rotation of the worm 23 drives the worm wheel 22 to rotate and then drives the matching block 9 to flip. The purpose of using the worm gear mechanism is to utilize its reverse self-locking principle to maintain the state of the matching block 9 after the adjusting gear 25 is adjusted, thereby ensuring the abutting torque transmission effect. The adjusting gear 25 is driven and adjusted by an adjusting motor installed in the inner magnetic steel sleeve 1, and the inner magnetic steel sleeve 1 is provided with wires for supplying power to the adjusting motor.

[0043] Embodiment five:

[0044] Magnetic blocks 27 are arranged in a ring shape on the inner magnetic steel sleeve 1 and the outer magnetic steel disk 4 , and the N poles and S poles of the magnetic blocks 27 are arranged alternately.

[0045] In this embodiment, refer to the attached specification. Figure 1 , further discloses the layout structure and direction of the magnetic block 27. By arranging the magnetic block 27 on the arc-shaped side wall and the two end faces of the outer magnetic steel disk, the magnetic coupling strength can be ensured while the coupling strength can be adjusted.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-group composite permanent magnet eddy current coupler, characterized in that: include: An inner magnetic steel sleeve, wherein the inner magnetic steel sleeve is composed of outer shells symmetrically arranged on the left and right sides, and a power output shaft is integrally formed at one end of the inner magnetic steel sleeve, and a plurality of matching chambers are formed in the inner magnetic steel sleeve; The number of the outer magnetic steel disks is consistent with the number of the matching chambers and corresponds one to one. The outer magnetic steel disks are all connected to the same power input shaft. The power input shaft extends outward through the shaft hole opened at one end of the inner magnetic steel sleeve away from the power output shaft and is connected to the driving mechanism through a coupling; wherein, The matching chamber is composed of telescopic chambers at the upper and lower ends and at least one interlayer chamber arranged therebetween, a fixed external magnetic steel disk is arranged in the interlayer chamber, and movable external magnetic steel disks are arranged in the upper and lower telescopic chambers, and the movable external magnetic steel disks on the upper and lower sides synchronously move toward or away from each other, and the coupling magnetic strength between the movable external magnetic steel disk and the inner magnetic steel sleeve is adjusted by the movement toward or away from each other, and the mechanism that drives the upper and lower movable external magnetic steel disks to move toward or away from each other synchronously is a coupling strength adjustment mechanism; A mating block is also telescopically arranged at the bottom of the movable outer magnetic steel disk away from the side of the power input shaft, and the mating block is movably matched with the embedding groove provided on the inner magnetic steel sleeve. When the mating block is matched with the embedding groove of the inner magnetic steel sleeve, the inner magnetic steel sleeve and the movable outer magnetic steel disk are contact-matched. When the mating block is disengaged from the embedding groove of the inner magnetic steel sleeve, the inner magnetic steel sleeve and the movable outer magnetic steel disk are magnetically coupled and connected. A telescopic mechanism for controlling the telescopic movement of the mating block is arranged inside the movable outer magnetic steel disk.

2. A multi-group composite permanent magnet eddy current coupler according to claim 1, characterized in that: The power input shaft includes a shaft section and a magnetic steel disk connecting section coaxially fixed thereto, the diameter of the magnetic steel disk connecting section is larger than the diameter of the shaft section, telescopic rod bodies are telescopically arranged at both ends of the magnetic steel disk connecting section, the telescopic rod bodies on both sides are respectively fixedly connected to the movable external magnetic steel disks on the upper and lower sides, the close sides of the telescopic rod bodies on the upper and lower sides are respectively connected to the corresponding lifting pistons, the lifting pistons are slidingly arranged in the hollow slide groove opened in the magnetic steel disk connecting section, and an oil pumping ring is also fixedly installed on the hollow slide groove between the lifting pistons on both sides, the oil pumping ring is fixedly connected to the shaft section and communicated with the oil pumping channel opened in the shaft section, the oil pumping channel is communicated with the external oil pumping sleeve ring, and the hydraulic oil is pumped into the oil pumping sleeve ring by the oil pump to adjust the position of the lifting pistons on both sides, and then the spacing between the movable external magnetic steel disks on the upper and lower sides is adjusted.

3. A multi-group composite permanent magnet eddy current coupler according to claim 1 or 2, characterized in that: Spring grooves are also provided on both sides of the hollow slide groove, and extrusion springs are installed in the spring grooves. One end of the extrusion spring abuts against the spring groove and the other end abuts against the lifting piston. The extrusion spring is used to push the lifting pistons on both sides toward the pump oil ring without external force.

4. A multi-group composite permanent magnet eddy current coupler according to claim 3, characterized in that: The interlayer chamber is provided with one, and the fixed outer magnetic steel disk fixing sleeve is arranged outside the magnetic steel disk connecting section.

5. A multi-group composite permanent magnet eddy current coupler according to claim 4, characterized in that: The matching blocks are provided in a pair, and the matching blocks are respectively fixedly connected to the eccentric rod of the bevel gear, the eccentric rods of the bevel gear on both sides are meshed with the active bevel gear, and the active bevel gear is also coaxially fixed with the worm gear, the worm gear is matched with the worm gears provided on both sides, and a driving gear is also fixedly installed on the worm gear, the driving gear is meshed with the adjusting gear provided on the inner magnetic steel sleeve, and the adjusting gear is fixedly connected to the driving shaft of the adjusting motor, the matching blocks are provided in the receiving groove, and the matching blocks are retracted or protruded from the receiving groove during the rotation of the eccentric rod of the bevel gear, and when the matching blocks protrude from the receiving groove, they are matched with the embedded groove when the movable outer magnetic steel disk approaches the magnetic steel disk connecting section.

6. A multi-group composite permanent magnet eddy current coupler according to claim 5, characterized in that: The inner magnetic steel sleeve and the outer magnetic steel disk are both provided with magnetic blocks arranged in an annular manner, and the N poles and S poles of the magnetic blocks are arranged alternately.

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