CN115940572A - Permanent magnet eddy current flexible transmission device and flexible transmission method thereof - Google Patents
Permanent magnet eddy current flexible transmission device and flexible transmission method thereof Download PDFInfo
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- CN115940572A CN115940572A CN202211713413.5A CN202211713413A CN115940572A CN 115940572 A CN115940572 A CN 115940572A CN 202211713413 A CN202211713413 A CN 202211713413A CN 115940572 A CN115940572 A CN 115940572A
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Abstract
The invention relates to a permanent magnet eddy current flexible transmission device which comprises a conductor disc rotor and a permanent magnet rotor which are oppositely arranged, wherein the conductor disc rotor is connected with a motor, and the permanent magnet rotor is connected with a load. The air gap between the conductor disc rotor and the permanent magnet rotor is fixed. The permanent magnet rotating body comprises a permanent magnet transmission disc, and a plurality of magnetic steels are arranged on the permanent magnet transmission disc at intervals along the circumferential direction of the permanent magnet transmission disc. The magnetic steel can move between a first position and a second position along the radial direction of the permanent magnetic transmission disc. The invention also provides a flexible transmission method of the permanent magnet eddy current flexible transmission device. The permanent magnet driving disc has the beneficial effects that the magnetic steel on the permanent magnet driving disc is always arranged opposite to the conductor disc rotor, so that even if the magnetic steel moves along the radial direction of the permanent magnet driving disc, the magnetic field force between the magnetic steel and the conductor disc rotor is enough to drive the permanent magnet rotor to rotate along with the conductor disc rotor, the moving distance between the first position and the second position of the magnetic steel can be correspondingly prolonged, the starting time of a load is further prolonged, and the motor is protected from overload torque impact.
Description
Technical Field
The invention relates to the technical field of permanent magnet eddy current transmission, in particular to a permanent magnet eddy current flexible transmission device and a flexible transmission method thereof.
Background
Permanent magnet eddy current drives are revolutionary drives that transmit torque through controlled air gaps. The permanent magnet eddy current transmission device belongs to one kind of coupling transmission and can realize non-contact power transmission. The permanent magnet eddy current drive comprises a conductor disc rotor and a permanent magnet rotor, which are contactless and have an air gap (hereinafter simply referred to as air gap). The conductor disc rotor is connected with the output end of the motor, and the permanent magnet rotor is connected with the input end of the load. The motor drive conductor dish rotor rotates, takes place relative rotation between conductor dish rotor and the permanent magnet rotor, and alternating magnetic field between conductor dish rotor and the permanent magnet rotor produces the vortex on conductor dish rotor, and the induction magnetic field and the alternating magnetic field interact that the vortex produced drive permanent magnet rotor and rotate, realize the contactless transmission of power, and then realize the moment of torsion transmission between motor and the load.
The permanent magnet eddy current transmission device can realize flexible starting of the motor and motor protection under the overload or blocking state of a load:
when the motor starts, motor drive conductor dish rotor rotates, and the magnetic field between conductor dish rotor and the permanent magnet rotor drives permanent magnet rotor and rotates with higher speed gradually, until permanent magnet rotor and conductor dish rotor rotate in step to it is long when extension permanent magnet rotor drives load pivoted start-up, need overcome great inertia and rotate with the drive load when avoiding the motor to start, thereby it is too big and produce a large amount of heat and burn out the motor to lead to the electric current in the motor short time. When the load is in an overload or dead-locked state, the conductor disc rotor and the permanent magnet rotor are not in contact, and the motor connected with the conductor disc rotor can still rotate to avoid the damage of the motor.
The protection of the permanent magnet eddy current transmission device on the motor essentially delays the transmission between the overload torque and the driving motor, but the motor is damaged when running for a long time in a low-torque state, and power-off protection is needed as soon as possible.
Currently, permanent magnet eddy current drives mainly include three types:
the first type is: permanent magnet eddy current transmission device with fixed air gap. However, since the air gap between the conductor disc rotor and the permanent magnet rotor is fixed, the torque between the conductor disc rotor and the permanent magnet rotor is constant, and when the motor is started, or when a load is overloaded or stuck, under the action of a large difference in rotation speed between the conductor disc rotor and the permanent magnet rotor, the time of delayed transmission between the overloaded torque and the motor is short, and the effect of prolonging the load starting time period of the motor with larger starting inertia is worse.
The second type is: permanent magnet eddy current transmission device with automatically adjusted air gap. The structure of the permanent magnet eddy current transmission device is as follows: two permanent magnet rotors that connect are located between two conductor dish rotors, and the air gap between two permanent magnet rotors is adjustable.
When the motor is not started, the air gap value between the conductor disc rotating bodies and the corresponding permanent magnet rotating bodies is fixed. When the motor is started, the speed of the conductor disc rotating body connected with the motor slides to reach the rated rotating speed of the motor, relative rotating speed difference exists between the conductor disc rotating body and the permanent magnet rotating body, magnetic induction stress is generated between the conductor disc rotating body and the permanent magnet rotating body due to the existence of the rotating speed difference, and under the action of magnetic induction force, the air gap between the conductor disc rotating body and the permanent magnet rotating body is gradually reduced. When the motor continues to work, along with the air gap between the conductor disc rotor and the permanent magnet rotor is gradually reduced, the torque transmitted to the load by the motor is gradually increased, the rotating acceleration of the permanent magnet rotor is gradually increased, and the rotating speed is gradually increased. When the output power is stable, the air gap value between the permanent magnet rotor and the conductor disc rotor is fixed and transmission is stable.
When the load is overloaded or jammed, the rotating speed of the permanent magnet rotating bodies connected with the load is instantly reduced to be lower or close to zero, the rotating speed of the conductor disc rotating bodies connected with the motor is still equal to the rated rotating speed of the motor, the larger rotating speed difference between the permanent magnet rotating bodies and the conductor disc rotating bodies forms axial magnetic induction force between the permanent magnet rotating bodies and the conductor disc rotating bodies to push the two permanent magnet rotating bodies to move oppositely, so that the air gap between the permanent magnet rotating bodies and the corresponding conductor disc rotating bodies is increased, the torque transmitted between the load and the motor can be reduced, the motor can continuously work under the smaller torque, and overload or jam protection is realized.
Compared with the first type of permanent magnet eddy current transmission device, the second type of permanent magnet eddy current transmission device has longer transmission time between the overload torque and the motor, and better protection effect on the motor. However, if the clearance between the conductor disc rotor and the permanent magnet rotor is too large, the magnetic induction force between the conductor disc rotor and the permanent magnet rotor is weak, and the permanent magnet rotor cannot be driven by the conductor disc rotor to synchronously rotate, so that the air gap adjustment range of the second type of permanent magnet eddy current transmission device is only 1-2mm, the transmission time between the overloaded torque and the motor can be prolonged by only a fraction of a second, the prolonging time is limited, and the protection time of the motor is still short. Meanwhile, when the second type of permanent magnet eddy current transmission device is used, the permanent magnet rotor needs to move axially relative to the conductor disc rotor, and the axial space of the permanent magnet eddy current transmission device is occupied, so that the permanent magnet eddy current transmission device is large in axial size and large in overall size.
The third type: speed-regulating permanent magnet eddy current transmission device. The permanent magnet eddy current transmission device adjusts the air gap between the conductor disc rotor and the permanent magnet rotor through the actuator so as to correspondingly adjust the torque between the conductor disc rotor and the permanent magnet rotor, thereby achieving the motor protection effect similar to that of the second permanent magnet eddy current transmission device.
However, similar to the second type of permanent magnet eddy current gear, the third type of permanent magnet eddy current gear has a limited clearance setting between the conductor disc rotor and the permanent magnet rotor, resulting in a limited extended time and still a short protection time for the motor. And the third type of permanent magnet eddy current transmission device also occupies the axial space of the permanent magnet eddy current transmission device, so that the permanent magnet eddy current transmission device has larger axial size and larger integral volume.
Therefore, there is a need for a permanent magnet eddy current drive that can extend the transmission time between overloaded torque and the motor and that is small in overall size.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a permanent magnet eddy current transmission device, which solves the technical problems of the prior art that the transmission time between the motor and the overload torque can be prolonged and the overall volume is large when the permanent magnet eddy current transmission device is used.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, the present invention provides a permanent magnet eddy current flexible transmission device, including a conductor disc rotor and a permanent magnet rotor, which are oppositely disposed, wherein the conductor disc rotor is used for connecting a motor, and the permanent magnet rotor is used for connecting a load:
the air gap between the conductor disc rotating body and the permanent magnet rotating body is fixed;
the permanent magnet rotating body comprises a permanent magnet transmission disc, and a plurality of magnetic steels are arranged at intervals along the circumferential direction of the permanent magnet transmission disc;
the magnet steel can be followed the radial removal between primary importance and second place of permanent magnetism driving disk, just the primary importance with the second place is followed the radial from inside to outside of permanent magnetism driving disk sets gradually.
According to the invention, the permanent magnet transmission disc comprises a permanent magnet rotating main body and a back plate;
the end face of the permanent magnet rotating main body is provided with a plurality of through holes at intervals along the circumferential direction of the permanent magnet rotating main body, the through holes and the magnetic steel are arranged in a one-to-one correspondence manner, and the through holes are used for accommodating the magnetic steel;
the back plate is fixedly connected with the end face of the permanent magnet rotating main body, and the back plate can seal the opening of the through hole.
According to the invention, lubricating layers are arranged on the side wall of the through hole and between the permanent magnet rotating main body and the back plate.
According to the invention, the permanent magnet rotor further comprises a plurality of elastic parts, and the elastic parts and the magnetic steels are arranged in a one-to-one correspondence manner;
the elastic component is followed permanent magnet rotor's radial extension, the connection can be dismantled to the one end of elastic component the magnet steel, the connection can be dismantled to the other end permanent magnetism driving disc.
According to the present invention, the number of the conductor disk rotors and the number of the permanent magnet rotors are each one.
According to the invention, the number of the conductor disc rotors is two, and the number of the permanent magnet rotors is one;
the permanent magnet rotor is located between two conductor dish rotors, two conductor dish rotors fixed connection.
According to the conductor disc rotor structure, the number of the conductor disc rotors and the number of the permanent magnet rotors are two, the two permanent magnet rotors are fixedly connected, the two conductor disc rotors are fixedly connected, and the two permanent magnet rotors are located between the two conductor disc rotors.
According to the present invention, the conductor disc rotating body includes a conductor disc rotating case and a conductor disc;
the conductor disc is annular and is fixedly arranged on the end surface of the conductor disc rotating shell close to one end of the permanent magnet rotating body;
the conductor disc and the magnetic steel are arranged oppositely.
According to the invention, the conductor disc rotor is sleeved on the periphery of the permanent magnet rotor;
the conductor disc rotating body comprises a conductor disc rotating shell and a conductor disc;
the conductor disc rotating shell and the conductor disc are both annular, and the conductor disc is fixedly arranged on the inner circumferential side wall of the conductor disc rotating body;
the conductor disc and the magnetic steel are oppositely arranged.
In a second aspect, an embodiment of the present invention further provides a flexible transmission method of the permanent magnet eddy current flexible transmission device, where:
when the motor does not work, the magnetic steel is positioned at the first position;
when the motor drives the conductor disc rotating body to rotate, the magnetic steel gradually moves from the first position to the second position along the radial direction of the permanent magnet transmission disc;
when the load is overloaded or blocked, the magnetic steel moves from the second position to the first position along the radial direction of the permanent magnet transmission disc.
(III) advantageous effects
The beneficial effects of the invention are: the invention discloses a permanent magnet eddy current flexible transmission device which comprises a conductor disc rotating body and a permanent magnet rotating body which are oppositely arranged, wherein an air gap between the conductor disc rotating body and the permanent magnet rotating body is fixed, the conductor disc rotating body is used for being connected with a motor, and the permanent magnet rotating body is used for being connected with a load. The permanent magnet rotor includes permanent magnet drive plate, and permanent magnet drive plate sets up a plurality of magnet steels along its circumference interval, and the magnet steel can be followed permanent magnet drive plate radially and removed between primary importance and second place, and primary importance and second place set gradually radially from inside to outside along permanent magnet drive plate.
When the motor does not work, the magnetic steel is located at the first position.
When motor drive conductor dish rotor rotated, conductor dish rotor and permanent magnet rotor rotated relatively, under the effect of the magnetic field force between conductor dish rotor and the permanent magnet rotor, drove permanent magnet rotor and rotate with higher speed thereupon gradually, and the magnet steel on the permanent magnet drive dish receives centrifugal force because of inertia, and under the effect of centrifugal force, the magnet steel was followed the radial of permanent magnet drive dish and is removed to the second place by the primary importance gradually. In the process that the magnetic steel is moved from the first position to the second position, the radial distance between the circle centers of the magnetic steel and the permanent magnet transmission disc is gradually increased, the force arm of the magnetic field force between the magnetic steel and the conductor disc rotor is also gradually increased, the torque between the magnetic steel and the conductor disc rotor is gradually increased, namely, the torque transmitted by the motor to the load is also gradually increased. Along with the rotational speed crescent of permanent magnet rotor when rotating with conductor dish rotor synchronous, the centrifugal force that acts on the magnet steel on the permanent magnet driving dish is also big more, and this centrifugal force drives the magnet steel and removes to the second position gradually, and at this moment, the arm of force of the magnetic field force between magnet steel and the conductor dish rotor also crescent to the maximum value, and the moment of torsion between magnet steel and the conductor dish rotor also crescent to the maximum value, and the motor also reaches the maximum value to the moment of torsion of load transmission. In the process, the torque transmitted to the load by the motor is gradually increased, so that the phenomenon that the current of the motor is large and the motor is burnt due to the fact that the torque transmitted to the load by the motor is too large instantaneously is avoided.
When the motor stops working, the conductor disc rotor stops rotating, no magnetic field exists between the conductor disc rotor and the permanent magnet rotor, the permanent magnet rotor also stops rotating, and the magnetic steel is not subjected to the centrifugal force and moves to the first position from the second position again.
When the load is overloaded or blocked, the rotating speed of the permanent magnet rotating body connected with the load is instantaneously reduced to be lower or close to zero, the magnetic steel on the permanent magnet transmission disc has no centrifugal force effect, the magnetic steel moves to the first position from the second position, at the moment, the force arm of the magnetic field force between the magnetic steel and the conductor disc rotating body is the minimum value, the torque transmitted by the motor to the load is also at the minimum value, the motor can work under the smaller torque, the damage to the motor is reduced, and the overload or blocking protection is realized.
Because the magnet steel on the permanent magnetism transmission disc sets up with conductor dish rotor all the time relatively, even the radial movement of magnet steel along the permanent magnetism transmission disc, the magnetic field force size between magnet steel and the conductor dish rotor is also enough to drive the permanent magnetism rotor and rotate along with the conductor dish rotor. Therefore, the moving distance of the magnetic steel along the first position and the second position can be correspondingly prolonged, the starting time of the load is prolonged, and the motor is protected from overload torque impact. Therefore, the permanent magnet eddy current flexible transmission device is suitable for the working condition that the load changes periodically, the working condition that the motor needs to drive the load to rotate slowly (namely the requirement on the flexible starting of the motor is high), and the working condition that the impact at the moment of the load is high.
Meanwhile, the magnetic steel can be arranged on the permanent magnet transmission disc in a manner of moving between the first position and the second position along the radial direction of the permanent magnet transmission disc, the moving process of the magnetic steel cannot occupy the axial space of the permanent magnet eddy current flexible transmission device, and therefore the axial size of the permanent magnet eddy current flexible transmission device and the overall size of the permanent magnet eddy current flexible transmission device can be reduced. In addition, the permanent magnet eddy current flexible transmission device prolongs the transmission time between the overloaded torque and the motor in a mode that the magnetic steel is along the radial direction of the permanent magnet transmission disc, does not need to be provided with an axial movement mechanism for driving the permanent magnet rotor to axially move relative to the conductor disc rotor, and has the advantages of simple structure, convenience in processing and smaller volume.
Drawings
FIG. 1 is a perspective view of a permanent magnet eddy current compliant drive of the present invention (including a conductor disk rotor and a permanent magnet rotor disposed opposite each other);
FIG. 2 is an axial cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the permanent magnet rotor of FIG. 1;
FIG. 4 is a perspective view of the permanent magnet eddy current flexible transmission of the present invention (including two conductor disk rotors and one permanent magnet rotor);
FIG. 5 is an axial cross-sectional view of FIG. 4;
FIG. 6 is a perspective view of the permanent magnet eddy current compliant drive of the present invention (including two conductor disc rotors and two permanent magnet rotors);
FIG. 7 is an axial cross-sectional view of FIG. 6;
fig. 8 is a perspective view of the permanent magnet eddy current flexible transmission device according to the present invention (including a conductor disc rotor and a permanent magnet rotor, the conductor disc rotor is sleeved on the periphery of the permanent magnet rotor);
FIG. 9 is a cross-sectional view of FIG. 8;
fig. 10 is a schematic view of the permanent magnet rotor of fig. 8.
[ description of reference ]
1: a conductor disc rotor; 11: a conductor disc rotation housing; 12: a conductor disc;
2: a permanent magnet rotor; 21: a permanent magnet drive plate; 211: a permanent magnet rotating body; 2111: a through hole; 212: a back plate; 22: magnetic steel; 23: an elastic member; 24: carrying out top thread;
3: a connecting member.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1-10, the invention provides a permanent magnet eddy current flexible transmission device, which comprises a conductor disc rotor 1 and a permanent magnet rotor 2 which are oppositely arranged.
Specifically, the working principle of the permanent magnet eddy current flexible transmission device is as follows:
when the motor is not in operation, the magnet 22 is in the first position.
When motor drive conductor dish rotor 1 rotated, conductor dish rotor 1 and 2 relative rotations of permanent magnet rotor, under the effect of the magnetic field power between conductor dish rotor 1 and permanent magnet rotor 2, drive permanent magnet rotor 2 and rotate with higher speed thereupon gradually, and the magnet steel 22 on the permanent magnet drive dish 21 receives centrifugal force because of inertia, and under the effect of centrifugal force, magnet steel 22 is followed permanent magnet drive dish 21 radially and is removed to the second place by the primary importance gradually. In the process that the magnetic steel 22 moves from the first position to the second position, the radial distance between the circle centers of the magnetic steel 22 and the permanent magnet transmission disc 21 is gradually increased, the force arm of the magnetic field force between the magnetic steel 22 and the conductor disc rotor 1 is also gradually increased, the torque between the magnetic steel 22 and the conductor disc rotor 1 is gradually increased, that is, the torque transmitted by the motor to the load is also gradually increased. When the rotating speed of the permanent magnet rotor 2 is gradually increased to rotate synchronously with the conductor disc rotor 1, the centrifugal force of the magnetic steel 22 acting on the permanent magnet driving disc 21 is larger, the centrifugal force drives the magnetic steel 22 to gradually move to the second position, at the moment, the force arm of the magnetic field force between the magnetic steel 22 and the conductor disc rotor 1 is also gradually increased to the maximum value, the torque between the magnetic steel 22 and the conductor disc rotor 1 is also gradually increased to the maximum value, and the torque transmitted by the motor to the load also reaches the maximum value. In the process, the torque transmitted to the load by the motor is gradually increased, so that the phenomenon that the current of the motor is large and the motor is burnt due to instant overlarge torque transmitted to the load by the motor is avoided.
When the motor stops working, the conductor disc rotor 1 stops rotating, no magnetic field exists between the conductor disc rotor 1 and the permanent magnet rotor 2, the permanent magnet rotor 2 also stops rotating, and the magnetic steel 22 is not subjected to the centrifugal force and moves to the first position from the second position again.
When the load is overloaded or stuck, the rotating speed of the permanent magnet rotating body 2 connected with the load is instantaneously reduced to be lower or close to zero, the magnetic steel 22 on the permanent magnet driving disc 21 has no centrifugal force, the magnetic steel 22 moves from the second position to the first position, at the moment, the force arm of the magnetic field force between the magnetic steel 22 and the conductor disc rotating body 1 is the minimum value, the torque transmitted by the motor to the load is also at the minimum value, the motor can work under smaller torque, the damage to the motor is reduced, and the overload or stuck protection is realized. It should be noted that, in the above case of the overload of the load, the rotation speed difference between the conductor disk rotor 1 and the permanent magnet rotor 2 is large, so that the magnetic induction force between the conductor disk rotor 1 and the permanent magnet rotor 2 is small, and at this time, the rotation speed of the permanent magnet rotor 2 connected to the load is instantaneously reduced to be low or close to zero.
Because magnet steel 22 on the permanent magnetism driving disc 21 sets up with conductor dish rotor 1 is relative all the time, even magnet steel 22 is along permanent magnetism driving disc 21's radial movement, magnet steel 22 and conductor dish rotor 1 between the magnetic field force size also be enough to drive permanent magnetism rotor 2 and rotate along with conductor dish rotor 1. Therefore, the moving distance of the magnetic steel 22 along the first position and the second position can be correspondingly prolonged, the starting time of the load is prolonged, and the motor is protected from overload torque impact. Therefore, the permanent magnet eddy current flexible transmission device is suitable for the working condition that the load changes periodically, the working condition that the motor needs to drive the load to rotate slowly (namely the requirement on the flexible starting of the motor is high), and the working condition that the impact at the moment of the load is high.
Meanwhile, the magnetic steel 22 can move between the first position and the second position along the radial direction of the permanent magnet transmission disc 21 and is arranged on the permanent magnet transmission disc 21, the moving process of the magnetic steel 22 cannot occupy the axial space of the permanent magnet eddy current flexible transmission device, and therefore the axial size of the permanent magnet eddy current flexible transmission device and the whole volume of the permanent magnet eddy current flexible transmission device can be reduced. In addition, the permanent magnet eddy current flexible transmission device prolongs the transmission time between the overload torque and the motor in a mode that the magnetic steel 22 is along the radial direction of the permanent magnet transmission disc 21, does not need to be provided with an axial movement mechanism for driving the permanent magnet rotor 2 to axially move relative to the conductor disc rotor 1, and has the advantages of simple structure, convenience in processing and small volume.
Further, the permanent magnet transmission disc 21 includes a permanent magnet rotating body 211 and a back plate 212.
The end face of the permanent magnet rotating main body 211 is provided with a plurality of through holes 2111 at intervals along the circumferential direction thereof, the through holes 2111 and the magnetic steel 22 are arranged in a one-to-one correspondence manner, and the through holes 2111 are used for accommodating the magnetic steel 22. The back plate 212 is fixedly connected to the end surface of the permanent magnet rotating body 211, and the back plate 212 can close one side opening of the through hole 2111.
Specifically, a lubricating layer is disposed between the side wall of the through hole 2111 and the permanent magnet rotating body 211 and the back plate 212, so as to reduce the friction resistance when the magnetic steel 22 moves, and facilitate the movement of the magnetic steel 22.
The material of the lubricating layer is preferably polytetrafluoroethylene.
Further, the permanent magnet rotating body 2 further comprises a plurality of elastic pieces 23, and the elastic pieces 23 and the magnetic steel 22 are arranged in a one-to-one correspondence manner.
Specifically, the permanent magnet rotor 2 further includes a jackscrew 24.
The other end of the elastic piece 23 is detachably connected with the permanent magnet transmission disc 21 through a jackscrew 24.
Because elastic component 23 one end supports and leans on magnet steel 22, the setting mode of permanent magnetism driving disk 21 can be dismantled to the other end. In order to be suitable for different working conditions, the elastic parts 23 with different elastic coefficients can be correspondingly replaced so as to change the moving speed of the magnetic steel 22 and correspondingly adjust the overload torque and the transmission time between the motors, and the adjusting mode is simple and convenient.
Specifically, a plurality of elastic piece mounting holes are arranged at intervals on the circumferential side wall of the permanent magnet transmission disc 21, the elastic piece mounting holes are communicated with the through holes 2111, and the elastic piece mounting holes and the elastic pieces 23 are arranged in a one-to-one correspondence manner. The elastic piece 23 passes through the elastic piece mounting hole and is detachably connected with the permanent magnet transmission disc 21 through a jackscrew 24.
Further, the permanent magnet eddy current flexible transmission device comprises the following four setting modes:
the first setting mode is as follows: the number of conductor disk rotors 1 and permanent magnet rotors 2 is one. The conductor disc rotor 1 and the permanent magnet rotor 2 are arranged opposite to each other.
The second setting mode is as follows: the number of conductor disc rotors 1 is two, and the number of permanent magnet rotors 2 is one. The permanent magnet rotor 2 is positioned between the two conductor disk rotors 1, and the two conductor disk rotors 1 are fixedly connected.
The third setting mode is as follows: conductor dish rotor 1 and permanent magnet rotor 2 set up quantity and be two, two permanent magnet rotor 2 fixed connection, two conductor dish rotor 1 fixed connection, and two permanent magnet rotor 2 are located between two conductor dish rotors 1.
In the first to third embodiments of the permanent magnet eddy current flexible transmission, the conductor disc rotor 1 includes a conductor disc rotor housing 11 and a conductor disc 12. The conductor disc 12 is annular, and the conductor disc 12 is fixedly arranged on the end surface of the conductor disc rotating shell 11 close to one end of the permanent magnet rotating body 2. The conductor disc 12 and the magnetic steel 22 are oppositely arranged.
The fourth setting mode is as follows: conductor disc rotor 1 is located the periphery of permanent magnet rotor 2 cover. The conductor disc rotor 1 includes a conductor disc rotor case 11 and a conductor disc 12. The conductor disc rotating shell 11 and the conductor disc 12 are both annular, and the conductor disc 12 is fixedly arranged on the inner circumferential side wall of the conductor disc rotating body 1. The conductor disc 12 and the magnet steel 22 are arranged opposite to each other.
In the description of the present specification, the description of "one embodiment", "some embodiments", "examples", "specific examples" or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a flexible transmission of permanent magnetism vortex, includes relative conductor dish rotor (1) and permanent magnet rotor (2) that set up, conductor dish rotor (1) is used for connecting the motor, permanent magnet rotor (2) are used for connecting load, its characterized in that:
an air gap between the conductor disc rotating body (1) and the permanent magnet rotating body (2) is fixed;
the permanent magnet rotating body (2) comprises a permanent magnet transmission disc (21), and a plurality of magnetic steels (22) are arranged at intervals along the circumferential direction of the permanent magnet transmission disc (21);
magnet steel (22) can be followed the radial of permanent magnetism driving disk (21) moves between the primary importance and the second place, just the primary importance with the second place is followed the radial from inside to outside of permanent magnetism driving disk (21) sets gradually.
2. The permanent magnet eddy current flexible transmission device according to claim 1, wherein the permanent magnet transmission disc (21) comprises a permanent magnet rotating body (211) and a back plate (212);
a plurality of through holes (2111) are formed in the end face of the permanent magnet rotating main body (211) at intervals along the circumferential direction of the permanent magnet rotating main body, the through holes (2111) and the magnetic steel (22) are arranged in a one-to-one correspondence mode, and the through holes (2111) are used for containing the magnetic steel (22);
the back plate (212) is fixedly connected with the end face of the permanent magnet rotating main body (211), and the back plate (212) can close an opening at one side of the through hole (2111).
3. The permanent magnet eddy current flexible transmission device according to claim 2, wherein a lubricating layer is provided between the side wall of the through hole (2111) and the permanent magnet rotating body (211) and the back plate (212).
4. The permanent magnet eddy current flexible transmission device according to claim 1, wherein the permanent magnet rotor (2) further comprises a plurality of elastic members (23), and the elastic members (23) and the magnetic steels (22) are arranged in a one-to-one correspondence;
elastic component (23) are followed the radial extension of permanent magnet rotor (2), the connection can be dismantled to the one end of elastic component (23) magnet steel (22), the connection can be dismantled to the other end permanent magnetism driving disc (21).
5. The permanent magnet eddy current flexible drive as claimed in claim 1, wherein;
the conductor disc rotating body (1) and the permanent magnet rotating body (2) are arranged in quantity of one.
6. The permanent magnet eddy current flexible drive as claimed in claim 1, wherein;
the number of the conductor disc rotating bodies (1) is two, and the number of the permanent magnet rotating bodies (2) is one;
the permanent magnet rotating bodies (2) are located between the two conductor disc rotating bodies (1) and are fixedly connected with the conductor disc rotating bodies (1).
7. The permanent magnet eddy current flexible transmission device according to claim 1;
conductor dish rotor (1) with the quantity that sets up of permanent magnet rotor (2) is two, two permanent magnet rotor (2) fixed connection, two conductor dish rotor (1) fixed connection, and two permanent magnet rotor (2) are located between two conductor dish rotors (1).
8. A permanent magnet eddy current flexible transmission device according to any of claims 5-7, characterized in that the conductor disc rotor (1) comprises a conductor disc rotor housing (11) and a conductor disc (12);
the conductor disc (12) is annular, and the conductor disc (12) is fixedly arranged on the end face of one end, close to the permanent magnet rotating body (2), of the conductor disc rotating shell (11);
the conductor disc (12) and the magnetic steel (22) are arranged oppositely.
9. The permanent magnet eddy current flexible transmission device according to claim 1, wherein the conductor disc rotor (1) is sleeved on the periphery of the permanent magnet rotor (2);
the conductor disc rotating body (1) comprises a conductor disc rotating shell (11) and a conductor disc (12);
the conductor disc rotating shell (11) and the conductor disc (12) are both annular, and the conductor disc (12) is fixedly arranged on the inner circumferential side wall of the conductor disc rotating body (1);
the conductor disc (12) and the magnetic steel (22) are arranged oppositely.
10. A flexible transmission method of a permanent magnet eddy current flexible transmission device according to any one of claims 1 to 9, characterized in that:
when the motor does not work, the magnetic steel (22) is positioned at the first position;
when the motor drives the conductor disc rotating body (1) to rotate, the magnetic steel (22) gradually moves from the first position to the second position along the radial direction of the permanent magnet transmission disc (21);
when the load is overloaded or jammed, the magnetic steel (22) moves from the second position to the first position along the radial direction of the permanent magnet transmission disc (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713413.5A CN115940572A (en) | 2022-12-29 | 2022-12-29 | Permanent magnet eddy current flexible transmission device and flexible transmission method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713413.5A CN115940572A (en) | 2022-12-29 | 2022-12-29 | Permanent magnet eddy current flexible transmission device and flexible transmission method thereof |
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| Publication Number | Publication Date |
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| CN115940572A true CN115940572A (en) | 2023-04-07 |
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| CN202211713413.5A Pending CN115940572A (en) | 2022-12-29 | 2022-12-29 | Permanent magnet eddy current flexible transmission device and flexible transmission method thereof |
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| Country | Link |
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| CN (1) | CN115940572A (en) |
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