CN115765381A - Permanent magnet synchronous coupler with induced eddy current - Google Patents
Permanent magnet synchronous coupler with induced eddy current Download PDFInfo
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- CN115765381A CN115765381A CN202211136639.3A CN202211136639A CN115765381A CN 115765381 A CN115765381 A CN 115765381A CN 202211136639 A CN202211136639 A CN 202211136639A CN 115765381 A CN115765381 A CN 115765381A
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Abstract
The invention relates to the technical field of couplings, in particular to a permanent magnet synchronous coupler with an induced eddy current. The permanent magnet synchronous coupler with the induced eddy current comprises an outer shell, an inner carrier, a synchronous magnetic coupling pair and an induced eddy current magnetic coupling pair, wherein the synchronous magnetic coupling pair comprises a synchronous outer permanent magnet group and a synchronous inner permanent magnet group, and the induced eddy current magnetic coupling pair comprises an eddy current permanent magnet group, an induction disc, a limiting boss, an elastic piece and a fixing block. The device combines the synchronous permanent magnet coupling and the eddy magnetic coupling, on one hand, the overload of the device in the allowable range of the motor is allowed, the requirement of maximizing the benefit of a user can be met, the shutdown times of the whole transmission system caused by the intention, misoperation and the like of the user are reduced, and the production efficiency is improved; on the other hand, when the overload running exceeds the allowable range of the motor, the device can enter an overload slip protection state, so that the whole transmission system is protected, and the original synchronously coupled overload slip protection mechanism cannot be influenced.
Description
Technical Field
The invention relates to the technical field of couplers, in particular to a permanent magnet synchronous coupler with an induced eddy current.
Background
The synchronous permanent magnet coupling device is a novel coupler which utilizes a rare earth permanent magnet magnetic field to carry out magnetic suspension spaced transmission, can replace the mechanical connection of the traditional coupler, is widely applied to the steel industry, the coal industry, the cement industry, the energy industry, the chemical industry and the like, and relates to the working conditions that: the synchronous transmission efficiency of the device is as high as 99.9 percent, and the device is favored by a plurality of users.
At present, in the use process of a plurality of working conditions, a user usually realizes benefit maximization by increasing the conveying capacity of a load end, so that the load end is overloaded to run, and meanwhile, the overload running coefficient is within the allowable range of a motor. The biggest difference between the synchronous permanent magnet coupling device and the traditional coupling is as follows: when the phenomenon occurs, the traditional coupler can continuously work under the overload running state due to the mechanical coupling characteristic, and the motor cannot be stopped until the overload protection action occurs on the motor; the synchronous permanent magnet coupling device performs magnetic suspension space transmission by utilizing a rare earth permanent magnet magnetic field, the mechanical connection characteristic of a traditional coupler does not exist, and in an overload running state, as long as the overload coefficient of a load end is greater than the maximum torque of the synchronous permanent magnet coupling device, the synchronous permanent magnet coupling device can enter an overload slipping protection state, namely, a motor still works normally, but the load end stops running. This results in that once the overload condition occurs at the load end, the synchronous permanent magnet coupler cannot work normally, so that the integration needs to be stopped, which affects the production efficiency on one hand, and on the other hand, the requirement of maximizing the benefit of the user cannot be met.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the synchronous permanent magnet coupling device in the prior art cannot adapt to overload within the allowable range of the motor, thereby providing a permanent magnet synchronous coupler with induced eddy current.
The invention provides a permanent magnet synchronous coupler with induced eddy current, which comprises:
an outer housing;
an inner carrier located within and coaxial with the outer shell;
the synchronous magnetic coupling pair comprises a synchronous outer permanent magnet group and a synchronous inner permanent magnet group, the synchronous outer permanent magnet group is fixed in the outer shell, the synchronous inner permanent magnet group is fixed on the inner carrier, and the synchronous inner permanent magnet group and the synchronous outer permanent magnet group are opposite in the axial direction or the radial direction and are provided with air gaps and transmit torque by means of magnetic force;
the induction eddy current magnetic coupling pair and the synchronous magnetic coupling pair are distributed at intervals along the axial direction, the induction eddy current magnetic coupling pair comprises an eddy current permanent magnet group, an induction disc, a limiting boss, an elastic piece and a fixing block, one of the eddy current permanent magnet group and the induction disc is fixed on one of the outer shell and the inner carrier, the other of the eddy current permanent magnet group and the induction disc is sleeved on the other of the outer shell and the inner carrier in a sliding mode to form a sliding piece, the induction disc is opposite to the eddy current permanent magnet group in the axial direction, the limiting boss and the mounting seat are fixed on the other of the outer shell and the inner carrier and located on two sides of the sliding piece, the limiting boss is suitable for limiting the sliding piece to enable an air gap to be reserved between the eddy current permanent magnet group and the induction disc, the elastic piece is mounted between the sliding piece and the mounting seat, the elastic piece is in a natural state when a load is in a motor allowable range, and is compressed when the load is beyond the motor allowable range.
Optionally, the eddy current permanent magnet set is fixedly arranged, and the induction disc is arranged in a sliding manner.
Optionally, the induction discs are provided with two induction discs which are symmetrically distributed on the axial direction on two sides of the eddy current permanent magnet set, each induction disc is correspondingly provided with an elastic part and a fixed block, and the limiting boss is located between the two induction discs.
Optionally, the inner carrier or the outer shell is slidably sleeved with a mounting seat, and the induction disc is fixed on the mounting seat.
Optionally, the induction disc is made of a high-conductivity material, the mounting seat is made of a high-permeability material, and the outer shell and the inner carrier are made of non-permeability materials.
Optionally, the elastic member is a spring, and an axis of the spring is parallel to an axis of the inner carrier.
Optionally, the synchronous outer permanent magnet group and the synchronous inner permanent magnet group are arranged in a radially staggered manner with N and S poles or arranged in a HALBACH manner, and the eddy current permanent magnet group is arranged in a circumferentially staggered manner with N and S poles.
Optionally, the method further includes:
the first connecting shaft is fixed on the outer shell, is coaxial with the outer shell and is positioned at one end of the outer shell in the axial direction;
and the second connecting shaft is fixed on the inner carrier, is coaxial with the inner carrier and is positioned at one end of the inner carrier in the axial direction, and the first connecting shaft and the second connecting shaft are respectively positioned at two ends of the device in the axial direction.
Optionally, a labyrinth structure is arranged between the outer casing and the inner carrier or the outer casing is connected with the inner carrier through a bearing.
Optionally, a heat dissipation plate is arranged on the outer side wall of the outer shell, and a heat dissipation channel is formed in the surface of the heat dissipation plate.
The technical scheme of the invention has the following advantages:
1. the invention provides a permanent magnet synchronous coupler with induced eddy currents, which is provided with a pair of coaxial synchronous magnetic coupling pairs and a pair of induced eddy current magnetic coupling pairs. When the load end is overloaded, the device enters an overload slip protection state, and at the moment, the induced electromotive force generated by the induction disc is increased, the axial force between the induced electromotive force and the eddy current permanent magnet set is increased, and the transmission torque between the induced electromotive force and the eddy current permanent magnet set is also increased; if overload is in the allowable range of the motor, when the transmission torque between the induction disc and the eddy current permanent magnet set is increased to a certain value, the load can be driven by matching with the synchronous coupling torque, and the axial force between the induction disc and the eddy current permanent magnet set is not enough to drive the conductor ring to axially move at the moment, because the overload running state is mostly caused by the instant increase of the load at the load end, if the device can counteract the instant impact, the device can continue to work in the overload running state; if overload exceeds the allowable range of the motor, even if the electromotive force on the induction disc is increased to the maximum value for keeping the axial static state of the induction disc, the induction disc cannot drive the load, the electromotive force on the induction disc is continuously increased, the axial force between the induction disc and the eddy current permanent magnet set drives the induction disc to be far away from the eddy current permanent magnet set, the air gap between the induction disc and the eddy current permanent magnet set is enlarged, the electromotive force is reduced, the synchronous permanent magnet coupling device can enter an overload slipping protection state, and when the whole transmission system returns to normal operation or stops, the control element enables the induction disc to reset. The device combines the synchronous permanent magnet coupling and the eddy magnetic coupling, on one hand, the overload of the device in the allowable range of the motor is allowed, the requirement of maximizing the benefit of a user can be met, the shutdown times of the whole transmission system caused by the intention, misoperation and the like of the user are reduced, and the production efficiency is improved; on the other hand, when the overload running exceeds the allowable range of the motor, the device can enter an overload slip protection state, so that the whole transmission system is protected, and the original synchronously coupled overload slip protection mechanism cannot be influenced. In addition, the device can reset through the control element when in normal or shutdown, and long-term use of the synchronous permanent magnet coupling device is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a first schematic structural diagram of a permanent magnet synchronous coupler with induced eddy currents according to an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of a permanent magnet synchronous coupler with induced eddy currents according to an embodiment of the present invention;
FIG. 3 is a third schematic structural diagram of a permanent magnet synchronous coupler with induced eddy currents in an embodiment of the present invention;
FIG. 4 is a schematic diagram of the magnet distribution of the synchronous permanent magnet groups in the embodiment of the invention;
fig. 5 is a schematic diagram of the magnet distribution of the eddy current permanent magnet assembly in the embodiment of the invention.
Description of the reference numerals:
1. a synchronous magnetic coupling pair; 11. a synchronous outer permanent magnet group; 12. a synchronous inner permanent magnet group; 2. an induced eddy current magnetic coupling pair; 21. an eddy current permanent magnet group; 22. an induction disc; 23. a limiting boss; 24. a mounting seat; 25. an elastic member; 26. a fixed block; 3. an outer housing; 31. a flange plate; 32. a body; 33. a cover plate; 34. a bearing; 35. a heat dissipation plate; 36. a hoisting ring; 4. an inner carrier; 5. a first connecting shaft; 6. and a second connecting shaft.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
Referring to fig. 1 to fig. 3, the present embodiment provides a permanent magnet synchronous coupler with induced eddy current, including:
an outer shell 3;
an inner carrier 4 located within the outer housing 3 and coaxial with the outer housing 3;
the synchronous magnetic coupling pair 1 comprises a synchronous outer permanent magnet group 11 and a synchronous inner permanent magnet group 12, the synchronous outer permanent magnet group 11 is fixed in the outer shell 3, the synchronous inner permanent magnet group 12 is fixed on the inner carrier 4, and the synchronous inner permanent magnet group 12 is opposite to the synchronous outer permanent magnet group 11 in the axial direction or the radial direction and is provided with an air gap and transfers torque by means of magnetic force;
the induction eddy current magnetic coupling pair 2 is distributed with the synchronous magnetic coupling pair 1 at intervals along the axial direction, the induction eddy current magnetic coupling pair 2 comprises an eddy current permanent magnet group 21, an induction disc 22, a limit boss 23, an elastic piece 25 and a fixing block 26, one of the eddy current permanent magnet group 21 and the induction disc 22 is fixed on one of the outer shell 3 and the inner carrier 4, the other of the eddy current permanent magnet group 21 and the induction disc 22 is sleeved on the other of the outer shell 3 and the inner carrier 4 in a sliding mode to form a sliding piece, the induction disc 22 is opposite to the eddy current permanent magnet group 21 in the axial direction, the limit boss 23 and a mounting seat 24 are fixed on the other of the outer shell 3 and the inner carrier 4 and located on two sides of the sliding piece, the limit boss 23 is suitable for limiting the sliding piece to enable an air gap to be reserved between the eddy current permanent magnet group 21 and the induction disc 22, the elastic piece 25 is mounted between the sliding piece and the mounting seat 24, when the load is in a motor allowable range, the elastic piece 25 is in a natural state, and when the load is beyond the motor allowable range, the elastic piece 25 is compressed.
The working principle of the permanent magnet synchronous coupler of the embodiment is as follows:
when the overload in the allowable motor range occurs at the load end, the device enters an overload slip protection state, at this time, the induced electromotive force generated by the induction disc 22 shows an increasing trend, the axial force between the induced electromotive force and the eddy current permanent magnet group 21 is larger and larger, the transmission torque between the induced disc 22 and the eddy current permanent magnet group 21 is also larger and larger, when the transmission torque between the induction disc 22 and the eddy current permanent magnet group 21 is increased to a certain value, the load can be driven by matching with the synchronous coupling torque, and the axial force between the induction disc 22 and the eddy current permanent magnet group 21 is not enough to drive the induction disc 22 to axially move at this time, because the overload operation state is mostly caused by the instant increase of the load at the load end, if the device can counteract the instant impact, the device can continue to work in the overload operation state;
when the overload exceeding the allowable range of the motor occurs at the load end, the device enters an overload slip protection state, at this time, the induced electromotive force generated by the induction disc 22 shows an increasing trend, the axial force between the induced electromotive force and the eddy current permanent magnet group 21 is increasingly larger, the transmission torque between the induced electromotive force and the eddy current permanent magnet group 21 is also increasingly larger, even if the electromotive force on the induction disc 22 is increased to the maximum value keeping the axial static state, the load cannot be driven, at this time, the electromotive force on the induction disc 22 is continuously increased, the axial force between the induction disc 22 and the eddy current permanent magnet group 21 drives the induction disc 22 to be far away from a plurality of eddy current permanent magnet groups 21, the air gap between the induction disc 22 and the eddy current permanent magnet groups 21 is increased, the electromotive force is reduced, so that the synchronous permanent magnet coupling device can enter an overload slip protection state, and when the whole transmission system returns to normal operation or stops, the induction disc 22 is reset by the elastic element 25;
when the overload is started, if the starting slip phenomenon occurs, the output torque is temporarily improved by using the inductive eddy current coupling pair, and finally the whole transmission system is normally started to operate, which is similar to the condition that the overload occurs in the allowable range of the motor at the load end; if the synchronous permanent magnet coupling device still cannot be started normally, the induction disc 22 is far away from the eddy permanent magnet group 21 by using the axial thrust generated by the induction eddy coupling pair, the induction eddy coupling pair loses the effect temporarily, and the synchronous permanent magnet coupling device is ensured to enter an overload slipping protection state, so that the whole transmission system is protected.
The device of the embodiment combines the synchronous magnetic coupling pair 1 and the induction eddy current coupling pair, on one hand, the device is allowed to be overloaded within the allowable range of the motor, the requirement of maximizing the benefit of a user can be met, the shutdown times of the whole transmission system caused by the reasons of intention, misoperation and the like of the user are reduced, and the production efficiency is improved; on the other hand, when the overload running exceeds the allowable range of the motor, the device can enter an overload slip protection state, so that the whole transmission system is protected, and the original synchronously coupled overload slip protection mechanism cannot be influenced. In addition, the device can reset through the elastic piece 25 during normal or shutdown, and long-term use of the synchronous permanent magnet coupling device is realized.
The specific structure of the outer housing 3 is not limited, and may be an integral structure or may be formed by splicing several components. For example: as shown in fig. 1, the outer case 3 includes a flange plate 31, a body 32, and a cover plate 33 of the outer case 3 fixed in this order in the axial direction. In other alternatives, as shown in fig. 3, the cover may be omitted from the outer housing 3 shown in fig. 1; the flange plate 31 and the body 32 may be integrally formed, or the body 32 may be formed by joining a plurality of members.
Further, referring to fig. 1-3, a hanging ring 36 is fixed on the outer shell 3 to facilitate the hoisting of the whole device. Specifically, a screw hole may be formed in the housing, and the hanging ring 36 is screwed into the screw hole by a screw thread to achieve fixation.
Further, referring to fig. 1-2, a heat dissipation plate 35 may be disposed on an outer side wall of the outer housing 3, and a heat dissipation channel is disposed on a surface of the heat dissipation plate 35, so as to increase a heat dissipation area and improve a heat dissipation effect. Specifically, the structural form of the heat dissipation channel is not limited, and the heat dissipation channel may be a tooth-shaped heat dissipation channel or a groove-shaped heat dissipation channel.
The specific structure of the inner carrier 4 is not limited, and the inner carrier may be integrally formed or formed by splicing a plurality of components, and the latter is preferably adopted, so that the processing difficulty and the processing cost are low. The inner carrier 4 can be a solid structure or a hollow structure as shown in fig. 1, so that the load of the device is reduced, and the starting torque required by the self weight of the device is reduced.
The arrangement mode of the synchronous permanent magnet group comprises two types: one is the structure as shown in fig. 1, the synchronous inner permanent magnet group 12 is opposite to the synchronous outer permanent magnet group 11 in the radial direction with an air gap left and transmits torque by means of magnetic force; the other is the structure as shown in fig. 2, the synchronous inner permanent magnet group 12 is opposite to the synchronous outer permanent magnet group 11 in the axial direction with an air gap and transfers torque by means of magnetic force. The size of the air gap is not limited, and may be a fixed value or a value that varies within a certain interval. Preferably, as shown in fig. 4, the synchronous outer permanent magnet groups 11 and the synchronous inner permanent magnet groups 12 are both in a N, S pole radial staggered arrangement or a HALBACH arrangement.
The arrangement of the eddy current permanent magnet set 21 and the induction disc 22 includes the following steps: 1. as shown in fig. 1, the eddy current permanent magnet assembly 21 is fixed on the inner wall of the outer casing 3, and the induction disc 22 is slidably sleeved on the outer surface of the inner carrier 4; 2. as shown in fig. 3, the eddy current permanent magnet assembly 21 is fixed on the outer surface of the inner carrier 4, and the induction disc 22 is slidably sleeved on the inner wall of the outer shell 3; 3. the induction disc 22 is fixed on the inner wall of the outer shell 3, and the eddy current permanent magnet group 21 is sleeved on the outer surface of the inner carrier 4 in a sliding manner; 4. the induction disc 22 is fixed on the outer surface of the inner carrier 4, and the eddy current permanent magnet group 21 is slidably sleeved on the inner wall of the outer shell 3. Preferably, the former two structures are adopted, namely, the eddy current permanent magnet set 21 is fixedly arranged, and the induction disc 22 is arranged in a sliding manner.
The number of the eddy current permanent magnet sets 21 and the number of the induction discs 22 are not limited, and the number and the combination mode of the eddy current permanent magnet sets can be a single eddy current permanent magnet set 21 and a single induction disc 22, a single eddy current permanent magnet set 21 and a double induction disc 22, a double eddy current permanent magnet set 21 and a single induction disc 22, or a double eddy current permanent magnet set 21 and a double induction disc 22. The eddy current permanent magnet set 21 and the induction disc 22 can be interchanged, and the specific installation position is not limited. As a preferred mode, referring to fig. 1, there is one eddy current permanent magnet set 21, and two induction discs 22 are provided and symmetrically distributed on both sides of the eddy current permanent magnet set 21 in the axial direction. Preferably, as shown in fig. 5, the eddy current permanent magnet sets 21 are arranged in a circumferentially staggered manner with N and S poles.
The fixing mode of the limit boss 23 is not limited, and may be fixedly connected to the inner carrier 4 or the outer housing 3 by welding or bolts, or may be integrally formed with the inner carrier 4.
The elastic member 25 is preferably a spring, and may be replaced with another structure having a restoring capability. Specifically, a plurality of springs are arranged along the axial direction along the circumferential direction, and each spring is arranged along the axial direction, so that spring inner holes at two ends can be fixed by using a boss structure, and a guide pillar structure can also be fixed, so long as the elastic piece 25 can be limited to enable the elastic piece to stretch and retract only along the axial direction.
The fixing block 26 is mainly used for limiting the position of the elastic member 25, and may be fixedly connected to the inner carrier 4 or integrally formed with the inner carrier 4.
It should be understood that each sliding member is configured with an elastic member 25, a fixing block 26 and a limit boss 23, but not necessarily in a one-to-one correspondence relationship, for example, as shown in fig. 1, the sliding member is a sensing disc 22, one limit boss 23 corresponds to two sensing discs 22, and the limit boss 23 is located between the two sensing discs 22; for example, two springs may also share a common mounting block 26. In short, it is only necessary to ensure that one end of each sliding block is provided with the elastic element 25 and the fixed block 26, and the other end is provided with the limiting boss 23.
As can be easily understood, "when the load is within the allowable range of the motor, the elastic member 25 is in a natural state, and when the load is beyond the allowable range of the motor, the elastic member 25 is compressed to drive the sensing disc 22 away from the eddy current permanent magnet set 21", which substantially relates the pressure required for deformation of the elastic member 25 to the allowable range of the motor, because when the load is overloaded, the axial force between the sensing disc 22 and the eddy current permanent magnet set 21 is gradually increased, and the torque generated between the two is also gradually increased, and if the critical pressure required for deformation of the elastic member 25 is designed to correspond to the critical value of the allowable range of the motor, as long as the overload is within the allowable range of the motor, the torque between the sensing disc 22 and the eddy current permanent magnet set 21 is matched with the synchronous coupling torque to drive the load at a certain moment on the premise that the sensing disc 22 does not move axially, so as to make the device operate again; if the overload exceeds the allowable range of the motor, the axial force corresponding to the torque required by the driving load is enough to make the sensing disc 22 far away from the eddy current permanent magnet group 21, at this time, the eddy current magnetic device loses the action, and the device enters an overload slip protection state.
As a modified embodiment, the sliding member is slidably mounted on the inner carrier 4 or the outer housing 3 through a mounting seat 24, that is, the inner carrier 4 or the outer housing 3 is slidably sleeved with the mounting seat 24, and the sliding member is fixed on the mounting seat 24.
Furthermore, the inductive disc 22 is made of a high conductive material, the mounting seat 24 is made of a high magnetic conductive material, and the outer casing 3 and the inner carrier 4 are both made of a non-magnetic conductive material.
As an improved embodiment, the permanent magnet synchronous coupler may further include:
a first connecting shaft 5 fixed to the outer housing 3, coaxial with the outer housing 3 and located at one end of the outer housing 3 in the axial direction;
and a second connecting shaft 6 fixed to the inner carrier 4, which is coaxial with the inner carrier 4 and is located at one end of the inner carrier 4 in the axial direction, and the first connecting shaft 5 and the second connecting shaft 6 are located at both ends of the device in the axial direction, respectively.
The load and the driving end are respectively connected through the two connecting shafts, so that the connection and installation are more convenient.
The first connecting shaft 5 may be a drive shaft or a load shaft, and in the present embodiment, the first connecting shaft 5 is used as the drive shaft. The first connecting shaft 5 can be a solid shaft, and the connected shaft is designed as a shaft sleeve during connection; the connecting shaft can also be a shaft sleeve as shown in fig. 1, and the connected shaft is directly inserted in the connecting process and then positioned in the circumferential direction. The first connecting shaft 5 may be extended from the whole device as shown in fig. 1 or retracted into the whole device as long as the connection with the connected shaft can be achieved. The first connecting shaft 5 can be fixed on the outer shell 3 by end positioning spigot and bolt fastening, or by buckling, welding, or even integrally forming.
As a modified embodiment, a labyrinth structure is arranged between the outer shell 3 and the inner carrier 4 or the connection is made through a bearing 34. On the premise that the labyrinth structure can ensure the heat dissipation performance, dust is greatly prevented from entering the device; the bearings 34 can improve the stability of the relative rotation of the inner carrier 4 and the outer housing 3. Specifically, the labyrinth structure and the bearing 34 may be directly mounted on the outer housing 3 and the inner carrier 4, or indirectly mounted on the inner carrier 4 or the outer housing 3, for example, in fig. 1, the labyrinth structure is formed by the cover plate 33 and the fixing block 26 fixed on the inner carrier 4.
Based on the specific implementation in fig. 1, the installation process of the permanent magnet synchronous coupler of this embodiment is as follows:
1) The induction discs 22 are assembled with the corresponding mounting seats 24 respectively;
2) The synchronous outer permanent magnet group 11, the synchronous inner permanent magnet group 12, the limiting boss 23, the mounting seat 24 with the left side combined, the elastic piece 25 and the fixed block 26 are respectively mounted with the corresponding outer shell 3 and the inner carrier 4;
3) The flange plate 31 and the combined outer shell 3 body 32 are installed;
4) The outer shell 3 and the inner carrier 4 which are combined are installed through the process installation mechanism;
5) The eddy current permanent magnet group 21 and the combined outer shell 3 are installed;
6) The right combined mounting seat 24, the elastic piece 25, the fixed block 26 and the combined inner carrier 4 are mounted;
7) The cover plate 33 of the outer shell 3, the heat dissipation element and the combined outer shell 3 are installed;
8) And (3) respectively finishing the installation of the first connecting shaft 5, the second connecting shaft 6 and the synchronous permanent magnet coupling device body 32, and finishing the installation work.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A permanent magnet synchronous coupler with induced eddy currents, comprising:
an outer shell (3);
an inner carrier (4) located within the outer housing (3) and coaxial with the outer housing (3);
the synchronous magnetic coupling pair (1) comprises a synchronous outer permanent magnet group (11) and a synchronous inner permanent magnet group (12), the synchronous outer permanent magnet group (11) is fixed in the outer shell (3), the synchronous inner permanent magnet group (12) is fixed on the inner carrier (4), and the synchronous inner permanent magnet group (12) and the synchronous outer permanent magnet group (11) are opposite in the axial direction or the radial direction and are provided with air gaps and rely on magnetic force to transmit torque;
the induction eddy current magnetic coupling pair (2) is distributed at intervals along the axial direction with the synchronous magnetic coupling pair (1), the induction eddy current magnetic coupling pair (2) comprises an eddy current permanent magnet group (21), an induction disc (22), a limiting boss (23), an elastic piece (25) and a fixing block (26), one of the eddy current permanent magnet group (21) and the induction disc (22) is fixed on one of the outer shell (3) and the inner carrier (4), the other of the eddy current permanent magnet group (21) and the induction disc (22) is slidably sleeved on the other of the outer shell (3) and the inner carrier (4) to form a sliding piece, the induction disc (22) is axially opposite to the eddy current permanent magnet group (21), the limiting boss (23) and a mounting seat (24) are both fixed on the other of the outer shell (3) and the inner carrier (4) and located on two sides of the sliding piece, the limiting boss (23) is suitable for limiting the sliding piece to enable an air gap to be reserved between the eddy current permanent magnet group (21) and the induction disc (22), and the elastic piece (25) is mounted on two sides of the sliding piece (24) when the elastic loading range exceeds a natural loading range, and the elastic loading range is used when the motor (25).
2. Permanent-magnet synchronous coupler with induced eddy currents according to claim 1, characterized in that the eddy current permanent magnet groups (21) are fixedly arranged and the induction disc (22) is slidingly arranged.
3. The permanent-magnet synchronous coupler with induced eddy currents according to claim 2, wherein the induction discs (22) are provided with two induction discs and are axially and symmetrically distributed on two sides of the eddy-current permanent-magnet assembly (21), each induction disc (22) is correspondingly provided with an elastic element (25) and a fixed block (26), and the limit boss (23) is located between the two induction discs (22).
4. Permanent-magnet synchronous coupler with induced eddy currents according to claim 3, characterized in that the inner carrier (4) or the outer housing (3) is slidingly sleeved with a mounting seat (24), the induction disc (22) being fixed on the mounting seat (24).
5. Permanent-magnet synchronous coupler with induced eddy currents according to claim 4, characterized in that the induction disc (22) is made of a highly electrically conductive material, the mounting seat (24) is made of a highly magnetically conductive material, and the outer housing (3) and the inner carrier (4) are both made of a non-magnetically conductive material.
6. Permanent-magnet synchronous coupler with induced eddy currents according to claim 1, characterized in that the elastic element (25) is a spring, the axis of which is parallel to the axis of the inner carrier (4).
7. Permanent-magnet synchronous coupler with induced eddy currents according to claim 1, characterised in that the synchronous outer permanent magnet group (11) and the synchronous inner permanent magnet group (12) are both in a N, S-pole radial staggered arrangement or a HALBACH arrangement, the eddy-current permanent magnet group (21) being in a N, S-pole circumferential staggered arrangement.
8. The permanent magnet synchronous coupler with induced eddy currents according to any one of claims 1 to 7, further comprising:
a first connecting shaft (5) fixed to the outer shell (3), coaxial with the outer shell (3) and located at one end of the outer shell (3) in the axial direction;
and the second connecting shaft (6) is fixed on the inner carrier (4), is coaxial with the inner carrier (4) and is positioned at one end of the inner carrier (4) in the axial direction, and the first connecting shaft (5) and the second connecting shaft (6) are respectively positioned at two ends of the device in the axial direction.
9. Permanent-magnet synchronous coupler with induced eddy currents according to any of claims 1-7, characterized in that a labyrinth is provided between the outer housing (3) and the inner carrier (4) or connected by means of a bearing (34).
10. The permanent magnet synchronous coupler with induced eddy currents according to any one of claims 1 to 7, wherein a heat dissipation plate (35) is arranged on an outer side wall of the outer shell (3), and a heat dissipation channel is formed in the surface of the heat dissipation plate (35).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211136639.3A CN115765381A (en) | 2022-09-19 | 2022-09-19 | Permanent magnet synchronous coupler with induced eddy current |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211136639.3A CN115765381A (en) | 2022-09-19 | 2022-09-19 | Permanent magnet synchronous coupler with induced eddy current |
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| CN115765381A true CN115765381A (en) | 2023-03-07 |
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| CN202211136639.3A Pending CN115765381A (en) | 2022-09-19 | 2022-09-19 | Permanent magnet synchronous coupler with induced eddy current |
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|---|---|---|---|---|
| CN101997391A (en) * | 2009-08-11 | 2011-03-30 | 林贵生 | Transmission shaft permanent magnet coupling drive and speed regulation device capable of adjusting magnetic torque |
| US20120193184A1 (en) * | 2011-01-28 | 2012-08-02 | Hsin-An Chiang | Clutch mechanism with overload protection |
| CN203225647U (en) * | 2013-04-03 | 2013-10-02 | 淄博市淄川宏升液力机械厂 | Torque-limited-type permanent-magnetism coupler |
| CN212785137U (en) * | 2020-09-07 | 2021-03-23 | 芜湖锦程永磁技术有限公司 | Torque-limiting permanent magnet coupling |
| CN114039472A (en) * | 2021-11-24 | 2022-02-11 | 诸暨和创电机科技有限公司 | Parallel eddy synchronous composite coupler |
| CN216751499U (en) * | 2022-01-13 | 2022-06-14 | 诸暨和创电机科技有限公司 | Permanent magnet synchronous coupler capable of maintaining overload operation |
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2022
- 2022-09-19 CN CN202211136639.3A patent/CN115765381A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997391A (en) * | 2009-08-11 | 2011-03-30 | 林贵生 | Transmission shaft permanent magnet coupling drive and speed regulation device capable of adjusting magnetic torque |
| US20120193184A1 (en) * | 2011-01-28 | 2012-08-02 | Hsin-An Chiang | Clutch mechanism with overload protection |
| CN203225647U (en) * | 2013-04-03 | 2013-10-02 | 淄博市淄川宏升液力机械厂 | Torque-limited-type permanent-magnetism coupler |
| CN212785137U (en) * | 2020-09-07 | 2021-03-23 | 芜湖锦程永磁技术有限公司 | Torque-limiting permanent magnet coupling |
| CN114039472A (en) * | 2021-11-24 | 2022-02-11 | 诸暨和创电机科技有限公司 | Parallel eddy synchronous composite coupler |
| CN216751499U (en) * | 2022-01-13 | 2022-06-14 | 诸暨和创电机科技有限公司 | Permanent magnet synchronous coupler capable of maintaining overload operation |
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Application publication date: 20230307 |