A high-power synchronous current-regulated torque permanent magnet coupler based on series-winding coils

Abstract

The application discloses a high-power synchronous current torque-adjusting permanent magnet coupler based on series winding coils and relates to the technical field of permanent magnet couplers, mainly comprising a support, an input end assembly, a permanent magnet rotor part and an output end assembly; the output end assembly is arranged on the support, and the input end assembly is in transmission connection with one end of the output end assembly through the permanent magnet rotor part. The high-power synchronous current torque-adjusting permanent magnet coupler based on series winding coils can be controlled by a direct current to adjust electromagnetic torque and match load torque; the ratio of the slot pole number of the outer electromagnet winding is 1, the magnetic energy of the permanent magnet is fully utilized, and the high power is facilitated to be applied; the current is connected at the head and the tail, the winding circuit connection is simple, and only two brush slip rings are needed.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet coupler technology, and in particular to a high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils. Background Technology

[0002] Permanent magnet couplers are a new type of magnetic drive device that has developed rapidly in recent years. Magnetic drive is a new technology based on the fundamental theories of modern electromagnetism, utilizing the magnetic force generated by permanent magnet materials or electromagnets to achieve contactless transmission of force or torque. Magnetic drive devices can be classified into synchronous, eddy current, and hysteresis types according to their coupling principle. In synchronous types, both the master and driven rotors are equipped with permanent magnets, and the master and driven rotors rotate at the same speed. In eddy current types, the driving rotor is equipped with a conductor, and the driven rotor is equipped with a permanent magnet. In hysteresis types, the driving rotor is made of hysteresis material, and the driven rotor is a permanent magnet. When the transmitted torque is less than the maximum electromagnetic torque, the master and driven rotors rotate at the same speed, and there is no energy loss. When the transmitted torque equals the maximum electromagnetic torque, the master and driven rotors rotate at different speeds, and there is energy loss (hysteresis loss).

[0003] Traditional permanent magnet couplers are synchronous magnetic drive devices, which have the characteristics of overload resistance, coarse alignment, soft start, safety and reliability, can be used in harsh working conditions, greatly reduce the overall vibration of the equipment, are easy to install, reduce system maintenance, and extend the service life of the equipment.

[0004] Permanent magnet couplers are classified into cylindrical and disc types according to their structure. Compared with disc couplers, cylindrical couplers are widely used due to their simpler structure, lower axial force, and higher magnetic field utilization. Cylindrical permanent magnet couplers are often used in coal mines, chemical plants, and other enterprises to replace hydraulic couplers. They have a safety torque limiting function, slipping after reaching the limit torque without damaging the motor. Traditional cylindrical permanent magnet couplers use permanent magnets for both the inner and outer rotors, and there is no excitation current. Once manufactured, their electromagnetic performance and torque limiting cannot be adjusted, so they can only be used in a single application.

[0005] Currently, there are some technologies involving winding permanent magnet couplers, but the winding permanent magnet coupling in patent CN101997395 uses a disc structure, and patents CN105720788A and CN112636563 use closed slot and fractional slot concentrated winding methods. Fractional slot concentrated winding is generally used in fields such as large-volume low-power applications. Therefore, the above technologies have problems such as difficulty in adjusting torque, complex control circuits, low magnetic energy utilization, and difficulty in applying them to high-power applications. Summary of the Invention

[0006] To address the above technical problems, this invention provides a high-power synchronous current-controlled permanent magnet coupler based on series-wound coils. It employs a winding excitation current adjustment method to match the load torque, uses open-slot windings with a slot-to-pole ratio of 1 to solve the problem of low permanent magnet utilization, and uses adjacent winding circuits connected in series at the same end to simplify the DC circuit. This invention can be used in high-power applications, achieving multi-purpose functionality.

[0007] To achieve the above objectives, the present invention provides the following solution:

[0008] This invention provides a high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils, including a support, an input terminal assembly, a permanent magnet rotor part, and an output terminal assembly; the output terminal assembly is disposed on the support, and the input terminal assembly is drivenly connected to one end of the output terminal assembly through the permanent magnet rotor part.

[0009] Optionally, the input end assembly includes an external electromagnet rotor, which includes a motor end half coupling, an external rotor electromagnet cylinder, an external rotor electromagnet cylinder core, and an external rotor winding. The external rotor electromagnet cylinder has a cylindrical structure, with one end open and the other end coaxially connected to one end of the motor end half coupling. Multiple external rotor electromagnet cylinder cores are evenly arranged circumferentially on the inner wall of the external rotor electromagnet cylinder, and each external rotor electromagnet cylinder core has an external rotor winding on its outer wall.

[0010] Optionally, a plurality of exhaust baffles are evenly arranged circumferentially at the other end of the outer rotor electromagnet cylinder, and the exhaust baffles are set at an angle to the end face of the other end of the outer rotor electromagnet cylinder.

[0011] Optionally, a plurality of heat sinks are uniformly arranged circumferentially on the outer side wall of the outer rotor electromagnet cylinder.

[0012] Optionally, the permanent magnet rotor includes a permanent magnet, a permanent magnet fixing flange, and a permanent magnet fixing cylinder. The permanent magnet fixing flange is detachably disposed at one end of the permanent magnet fixing cylinder. The side wall of the permanent magnet fixing flange facing the permanent magnet fixing cylinder, the side wall of the permanent magnet fixing cylinder facing the permanent magnet fixing flange, and the outer side wall of the permanent magnet fixing cylinder are joined to form a groove. A plurality of permanent magnets are uniformly arranged circumferentially in the groove. The permanent magnet fixing cylinder is connected to the output end assembly.

[0013] Optionally, the other end of the permanent magnet fixing cylinder is provided with multiple air-cooling holes.

[0014] Optionally, the output end assembly includes an output bearing housing, a bushing, a shaft sleeve, an output bearing end cover, an output shaft, a round nut, and a bearing end cover; the outer wall of the output bearing housing is connected to the bracket, and the output bearing housing is provided with a mounting through hole along the circumference, through which the output shaft passes; the shaft sleeve is provided on the output shaft, and a bushing is provided between the outer side of the shaft sleeve and the inner wall of the mounting through hole; both ends of the shaft sleeve are flush with both ends of the bushing sleeve; bearings are provided at both ends of the shaft sleeve and the bushing sleeve; the bearing end cover is provided at one end of the output bearing housing facing the input end assembly, and the output bearing end cover is provided at the other end of the output bearing housing away from the input end assembly; the round nut is connected to the output shaft, and the round nut is used to prevent axial movement of the bearing; the end of the output shaft facing the input end assembly is connected to the permanent magnet rotor portion.

[0015] Optionally, a retaining washer is provided between the round nut and the bearing.

[0016] Optionally, the bearing at the end of the output bearing housing facing the input end assembly is a cylindrical roller bearing, and the bearing at the end of the output bearing housing away from the input end assembly is a deep groove ball bearing.

[0017] Optionally, a shaft end plate is provided at one end of the output shaft facing the input end assembly. The shaft end plate is threadedly connected to the output shaft and is used to connect the output shaft and the permanent magnet rotor part.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] (1) The electromagnetic torque can be adjusted by DC current control to match the load torque.

[0020] This invention steplessly adjusts the electromagnetic torque by regulating the current intensity of the DC excitation power supply of the electromagnet rotor, thereby achieving the purpose of matching the load torque and realizing multiple uses of one machine.

[0021] (2) The slot pole ratio of the external electromagnet winding is 1, which makes full use of the magnetic energy of the permanent magnet to facilitate the application of high power.

[0022] The present invention features permanent magnets evenly distributed on the circumference of the inner rotor and electromagnet cylinder cores evenly distributed on the circumference of the outer rotor. The number of permanent magnet poles is equal to the number of electromagnet slots, with a ratio of 1, which can make full use of magnetic energy and adapt to the application of high-power winding permanent magnet couplers.

[0023] (3) The current is connected end to end, the winding circuit connection is simple, and only two brushes and slip rings are needed.

[0024] To achieve efficient transmission between the inner and outer rotors under a coupled magnetic field, adjacent electromagnets need to maintain opposite polarities. Therefore, to ensure that adjacent electromagnet windings rotate in opposite directions, the inner ends of adjacent pairs of electromagnet windings are connected in series, and the outer ends of the next pair of adjacent electromagnet windings are connected in series. Ultimately, the initial and final ends of all windings can be connected individually. One connector is connected to the positive terminal of the DC power supply (brush and slip ring), and the other connector is connected to the negative terminal of the DC power supply (brush and slip ring). Circuit control can be achieved with only two brushes and slip rings. This design effectively simplifies current control and winding circuit structure. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is the assembly isometric view of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0027] Figure 2 This is an axial sectional view of the assembly of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0028] Figure 3 This is a radial sectional view of the assembly of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0029] Figure 4 This is an assembly diagram of the input terminal component of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0030] Figure 5 This is a side assembly diagram of the input terminal component of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0031] Figure 6 This is an assembly diagram of the output terminal component of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0032] Figure 7 This is an assembly diagram of the permanent magnet rotor assembly of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0033] Figure 8 This is a side assembly diagram of the sub-assembly permanent magnet rotor assembly of the high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils in this invention.

[0034] Figure 9 This is a schematic diagram of the circuit connection method of the high-power synchronous current torque-adjustable permanent magnet coupler based on series winding coils in this invention.

[0035] In the diagram: 1. Input component; 2. Permanent magnet rotor section; 3. Output component; 4. Exhaust baffle; 5. Motor end half coupling; 6. Shaft end pressure plate; 7. Outer rotor electromagnet cylinder; 8. Heat sink; 9. Outer rotor electromagnet cylinder core; 10. Outer rotor winding; 11. Permanent magnet; 12. Permanent magnet fixing flange; 13. Permanent magnet fixing cylinder; 14. Bracket; 15. Output bearing seat; 16. Cylindrical roller bearing; 17. Hole sleeve; 18. Shaft sleeve; 19. Deep groove ball bearing; 20. Output bearing end cover; 21. Output shaft; 22. Round nut; 23. Locking washer; 24. Bearing end cover; 25. DC power supply positive brush; 26. DC power supply positive slip ring; 27. DC power supply negative brush; 28. DC power supply negative slip ring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 9 As shown, this embodiment provides a high-power synchronous current torque-regulating permanent magnet coupler based on series winding coils, including a bracket 14, an input end assembly 1, a permanent magnet rotor part 2, and an output end assembly 3; the output end assembly 3 is disposed on the bracket 14, and the input end assembly 1 is connected to one end of the output end assembly 3 through the permanent magnet rotor part 2.

[0038] An electromagnet winding is arranged on the input component 1 to form an outer rotor, and a permanent magnet 11 is arranged on the permanent magnet rotor part 2 to form an inner rotor. The output component 3 threads the output shaft 21 to the permanent magnet rotor part 2. The electromagnet winding is placed in the slots of the outer rotor core, and the permanent magnet 11 is fixed on the inner rotor. There is an air gap between the permanent magnet 11 of the inner rotor and the pole shoes of the outer rotor core. The inner and outer rotors work by the principle of pull-push magnetic circuit to generate electromagnetic torque.

[0039] The inner rotor has several magnetic poles, with several neodymium iron boron rare earth permanent magnets 11 evenly distributed around its surface, magnetized parallel or radially. There are circumferential gaps between the permanent magnets 11 (called gap-dispersed permanent magnets 11). The magnetic poles of adjacent permanent magnets 11 are opposite in direction; if one permanent magnet 11 is the N pole, then the adjacent permanent magnet 11 is the S pole. The outer rotor has the same number of electromagnets as the inner rotor, with a slot-to-pole ratio of 1. The magnetic poles of adjacent iron cores are also exactly opposite in polarity; that is, if one iron core forms the N pole, then the adjacent iron core forms the S pole.

[0040] The terminals of adjacent electromagnet windings in the outer rotor are connected in series, eventually leading to a starting DC positive terminal and an ending DC negative terminal. The starting terminal is connected to a positive brush slip ring, and the ending terminal is connected to a negative brush slip ring. The positive and negative slip rings are connected to the main circuit.

[0041] The system's electrical control cabinet houses a DC generator circuit and a current intensity adjustment circuit.

[0042] The high-power synchronous current torque-adjustable permanent magnet coupler based on series-wound coils in this invention has the following characteristics and functions: The outer rotor uses an electromagnet winding structure to facilitate cooling. The open-slot winding structure is simple, while the closed-slot winding is difficult to wind and has not yet been suitable for mass production and high-power winding applications. Therefore, the outer electromagnet core uses open slots instead of closed slots. The inner rotor uses a surface-type permanent magnet 11 structure, with the permanent magnets 11 distributed in a gap manner. Both the inner and outer rotors of this invention can rotate. The slot pole ratio of the outer electromagnet winding is 1. Although this structure has some cogging torque, the utilization rate of the permanent magnets 11 is high, and the power that can be achieved is large. Adjacent electromagnet winding circuits are connected in series at the same end to simplify the winding circuit and facilitate production. DC control is adopted, and the electromagnetic torque of the permanent magnet coupler can be changed simply by adjusting the excitation current intensity of the electromagnet winding. Therefore, the synchronous adjustable torque permanent magnet coupler of the present invention can be used in high-power applications and can make full use of permanent magnet energy; the winding circuit is simple and easy to manufacture; it can be used for multiple purposes, and under the condition of constant speed, the excitation current can be adjusted according to the load size, and it has the function of matching load torque.

[0043] In this specific embodiment, the input terminal component 1 includes an external electromagnet rotor, which includes a motor end half coupling 5, an external rotor electromagnet cylinder 7, an external rotor electromagnet cylinder core 9, and an external rotor winding 10. The external rotor electromagnet cylinder 7 has a cylindrical structure, with one end of the external rotor electromagnet cylinder 7 being open. The other end of the external rotor electromagnet cylinder 7 is coaxially connected to one end of the motor end half coupling 5, and the external rotor electromagnet cylinder 7 and the motor end half coupling 5 are connected by multiple screws. Multiple external rotor electromagnet cylinder cores 9 are evenly arranged circumferentially on the inner wall of the external rotor electromagnet cylinder 7, and an external rotor winding 10 is arranged on the outer wall of each external rotor electromagnet cylinder core 9.

[0044] Multiple exhaust baffles 4 are evenly arranged circumferentially at the other end of the outer rotor electromagnet cylinder 7, and the exhaust baffles 4 are set at an angle to the end face of the other end of the outer rotor electromagnet cylinder 7. When the outer rotor electromagnet cylinder 7 rotates, the exhaust baffles 4 can act like fan blades, increasing airflow and thus enhancing heat dissipation.

[0045] Multiple fan-shaped holes are provided on the outer side wall of the outer rotor electromagnet cylinder 7, and the exhaust baffle 4 is installed at the fan-shaped holes by bolts. Several parallel inclined plates with spacing are welded in the small fan-shaped holes in the middle of the mounting plate of the exhaust baffle 4. There are gaps between the parallel inclined plates. As long as the outer rotor electromagnet cylinder 7 rotates with the motor, the exhaust baffle 4 can exhaust air axially for cooling.

[0046] Multiple heat sinks 8 are evenly arranged circumferentially on the outer wall of the outer rotor electromagnet cylinder 7. The heat sinks 8 are bolted to the outer wall of the outer rotor electromagnet cylinder 7. The heat sinks 8 are used for radial air cooling.

[0047] A pole shoe is provided at the inner diameter of the outer rotor electromagnet cylinder core 9, and the pole shoe and the outer rotor electromagnet cylinder core 9 are an integral structure.

[0048] The outer rotor winding 10 of the outer rotor electromagnet cylinder 7 also has several slots, and the slots are semi-closed. The outer rotor winding 10 of the outer rotor electromagnet cylinder 7 is wound in the slots between the outer rotor electromagnet cylinders 7. The outer rotor electromagnet cylinder 7 is axially stacked from multiple thin laminations, and the eddy current of the laminations is smaller than that of the integral iron core. The outer rotor electromagnet cylinder 7 is also axially stacked from thin laminations. The thin laminations of the outer rotor electromagnet cylinder 7 can be assembled into a whole, and the thin laminations of the outer rotor electromagnet cylinder 7 should also be assembled into a whole, and then the outer... The rotor electromagnet cylinder 7 and the outer rotor electromagnet cylinder 7 are assembled together. For example, the thin laminations of the outer rotor electromagnet cylinder 7 and the thin laminations of the outer rotor electromagnet cylinder 7 are respectively bolted to the middle of their respective pressure plates with tie rods insulated at both ends. Then, the outer rotor electromagnet cylinder 7 and the outer rotor electromagnet cylinder 7 are assembled by tenon joint. Two holes are evenly drilled around the circumference of the outer rotor electromagnet cylinder 7 near the motor end at the half coupling. The terminals of the adjacent electromagnet windings are connected in series. The two ends of the circuit are the positive and negative terminals of the DC power supply, respectively. After being connected to the two brushes, it is connected to the external circuit.

[0049] The permanent magnet rotor part 2 includes a permanent magnet 11, a permanent magnet fixing flange 12, and a permanent magnet fixing cylinder 13. The permanent magnet fixing flange 12 is detachably disposed at one end of the permanent magnet fixing cylinder 13. The side wall of the permanent magnet fixing flange 12 facing the permanent magnet fixing cylinder 13, the side wall of the permanent magnet fixing cylinder 13 facing the permanent magnet fixing flange 12, and the outer side wall of the permanent magnet fixing cylinder 13 are spliced ​​to form a groove. Multiple permanent magnets 11 are evenly arranged circumferentially in the groove. The permanent magnet fixing cylinder 13 is connected to the output end assembly 3.

[0050] The other end of the permanent magnet fixing cylinder 13 is provided with multiple air cooling holes.

[0051] There is a certain size air gap between the permanent magnet 11 and the outer rotor electromagnet cylinder core 9. The outer rotor electromagnet cylinder core 9 and the permanent magnet 11 are of equal length in the axial direction and are aligned in the axial direction.

[0052] The output end assembly 3 includes an output bearing housing 15, a bushing 17, a shaft sleeve 18, an output bearing end cover 20, an output shaft 21, a round nut 22, and a bearing end cover 24. The outer wall of the output bearing housing 15 is connected to the bracket 14. The output bearing housing 15 has a mounting through hole along its circumference, and the output shaft 21 passes through the mounting through hole. A shaft sleeve 18 is provided on the output shaft 21, and a bushing 17 is provided between the outer side of the bushing 18 and the inner wall of the mounting through hole. The two ends of the bushing 18 are flush with the two ends of the bushing 17. Bearings are provided at both ends of the bushing 18 and the bushing 17. A bearing end cover 24 is provided at the end of the output bearing housing 15 facing the input end assembly 1, and an output bearing end cover 20 is provided at the end of the output bearing housing 15 away from the input end assembly 1. The round nut 22 is connected to the output shaft 21 and is used to prevent axial movement of the bearing. The end of the output shaft 21 facing the input end assembly 1 is connected to the permanent magnet rotor part 2.

[0053] A retaining washer 23 is provided between the round nut 22 and the bearing.

[0054] The bearing at the end of the output bearing housing 15 facing the input end assembly 1 is a cylindrical roller bearing 16, and the bearing at the end of the output bearing housing 15 away from the input end assembly 1 is a deep groove ball bearing 19.

[0055] A shaft end plate 6 is provided at one end of the output shaft 21 facing the input end assembly 1. The shaft end plate 6 is connected to the output shaft 21 by a thread. The shaft end plate 6 is used to connect the output shaft 21 and the permanent magnet rotor part 2.

[0056] The output shaft 21 of the output end assembly 3 is fastened to the connection flange of the load device by a flat key. A bushing 18 and a bushing 17 are installed on the right side of the output shaft 21. The right side of the bushing 18 abuts against the left side of the inner ring of the deep groove ball bearing 19, and the right side of the bushing 17 abuts against the left side of the outer ring of the deep groove ball bearing 19. The right side of the inner ring of the deep groove ball bearing 19 is fastened to the output shaft 21 by a round nut 22 and a retaining washer 23. Threads are machined on the output shaft 21 at the corresponding positions of the round nut 22. The right side of the outer ring of the deep groove ball bearing 19 is axially fastened by an output bearing end cover 20. The output bearing end cover 20 is fastened to the output bearing housing 15 by circumferentially distributed screws. The output bearing housing 15 is fastened to the bracket 14 by circumferentially distributed screws and remains stationary together with the bracket 14. To the left of bushing 18 and bushing 17 is a cylindrical roller bearing 16. The left side of bushing 18 axially presses against the inner ring of cylindrical roller bearing 16, and the left side of bushing 17 axially presses against the outer ring of cylindrical roller bearing 16. The left side of the inner ring of cylindrical roller bearing 16 presses against the U-shaped collar of output shaft 21. The left side of the outer ring of cylindrical roller bearing 16 is held in place by bearing end cover 24, which is fastened to the left end face of output bearing housing 15 by evenly distributed screws. Therefore, output bearing housing 15, output bearing end cover 20, bearing end cover 24, outer ring of deep groove ball bearing 19, bushing 17, and outer ring of cylindrical roller bearing 16 are fixed, while the inner ring of cylindrical roller bearing 16, bushing 18, inner ring of deep groove ball bearing 19, retaining washer 23, and round nut 22 rotate together with output shaft 21, but there is no relative movement between output shaft 21 and the fixed parts.

[0057] The circuit connection method of the permanent magnet coupler in this invention is as follows: Figure 9As shown, several outer rotor electromagnet cylinder cores 9 are evenly distributed around the inner diameter of the outer rotor electromagnet cylinder 7. The number of outer rotor electromagnet cylinder cores 9 is the same as the number of permanent magnets 11. Each outer rotor electromagnet cylinder core 9 is wound with an outer rotor winding 10. The rotation directions of two adjacent outer rotor windings 10 are opposite, and the polarities at the corresponding inner diameter of the outer rotor electromagnet cylinder core 9 are also opposite. In a counterclockwise direction, the inner end of the inner diameter N-pole winding is connected in series with the inner end of the adjacent inner diameter S-pole winding, and the outer end of the adjacent inner diameter S-pole winding is connected in series with the outer end of the next inner diameter N-pole winding, and so on for one revolution. The outer end of the first inner diameter N-pole winding passes through a hole in the outer rotor electromagnet cylinder 7 and connects to the positive DC power supply brush 25. This positive DC power supply brush 25 is spring-loaded onto the positive DC power supply slip ring 26. The outer end of the last inner diameter S-pole winding passes through another hole in the outer rotor electromagnet cylinder 7 and connects to the negative DC power supply brush 27. This negative DC power supply brush 27 is spring-loaded onto the negative DC power supply slip ring 28. These two end holes are of equal size and evenly distributed around the circumference. Both the positive and negative DC power supply slip rings 26 and 28 are annular, of equal size, coaxial, with parallel cross-sections and equidistant axial spacing, and are mounted on the motor end fixed support. The positive DC power supply slip ring 26 is connected to the positive DC power supply, and the negative DC power supply slip ring 28 is connected to the negative DC power supply. Between the positive and negative DC power supply terminals are a DC power generation circuit and a current intensity adjustment circuit, which can both generate DC power and adjust the current intensity.

[0058] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils, characterized in that, It includes a bracket, an input end assembly, a permanent magnet rotor section, and an output end assembly; the output end assembly is disposed on the bracket, and the input end assembly is connected to one end of the output end assembly through the permanent magnet rotor section; The input component includes an external electromagnet rotor; the external electromagnet rotor includes an external rotor electromagnet cylinder and an external rotor winding. Multiple external rotor electromagnet cylinder cores are evenly arranged circumferentially on the inner wall of the external rotor electromagnet cylinder, and each external rotor electromagnet cylinder core has an external rotor winding on its outer wall. The slot-to-pole ratio of the external rotor winding is 1. Multiple heat sinks are evenly arranged circumferentially on the outer wall of the external rotor electromagnet cylinder. Multiple exhaust baffles are evenly arranged circumferentially at the other end of the external rotor electromagnet cylinder, and the exhaust baffles are connected to the external rotor... The end face of the other end of the electromagnet cylinder is angled; the permanent magnet rotor part includes a permanent magnet, a permanent magnet fixing flange, and a permanent magnet fixing cylinder, the permanent magnet fixing flange being detachably disposed at one end of the permanent magnet fixing cylinder; the side wall of the permanent magnet fixing flange facing the permanent magnet fixing cylinder, the side wall of the permanent magnet fixing cylinder facing the permanent magnet fixing flange, and the outer side wall of the permanent magnet fixing cylinder are spliced ​​to form a groove, and a plurality of permanent magnets are uniformly arranged circumferentially in the groove; the other end of the permanent magnet fixing cylinder is provided with a plurality of air cooling holes; The output end assembly includes an output bearing housing, a bushing, a shaft sleeve, an output bearing end cover, an output shaft, a round nut, and a bearing end cover. The outer wall of the output bearing housing is connected to the bracket. The output bearing housing has a mounting through hole along its circumference, and the output shaft passes through the mounting through hole. The shaft sleeve is mounted on the output shaft, and a bushing is provided between the outer side of the shaft sleeve and the inner wall of the mounting through hole. The two ends of the shaft sleeve are flush with the two ends of the bushing sleeve. Bearings are provided at both ends of the shaft sleeve and the bushing sleeve. The bearing end cover is provided at the end of the output bearing housing facing the input end assembly, and the output bearing end cover is provided at the end of the output bearing housing away from the input end assembly. The round nut is connected to the output shaft and is used to prevent axial movement of the bearing. The end of the output shaft facing the input end assembly is connected to the permanent magnet rotor portion.

2. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 1, characterized in that, The external electromagnet rotor also includes a motor end half coupling and an external rotor electromagnet cylinder core; the external rotor electromagnet cylinder has a cylindrical structure, one end of the external rotor electromagnet cylinder is open, and the other end of the external rotor electromagnet cylinder is coaxially connected to one end of the motor end half coupling.

3. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 2, characterized in that, Multiple heat sinks are evenly arranged circumferentially on the outer wall of the outer rotor electromagnet cylinder.

4. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 1, characterized in that, The permanent magnet fixing cylinder is connected to the output end assembly.

5. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 1, characterized in that, A retaining washer is provided between the round nut and the bearing.

6. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 1, characterized in that, The bearing at the end of the output bearing housing facing the input end assembly is a cylindrical roller bearing, and the bearing at the end of the output bearing housing away from the input end assembly is a deep groove ball bearing.

7. The high-power synchronous current torque-regulating permanent magnet coupler based on series-wound coils according to claim 1, characterized in that, The output shaft is provided with a shaft end pressure plate at one end facing the input end assembly. The shaft end pressure plate is threadedly connected to the output shaft and is used to connect the output shaft and the permanent magnet rotor part.

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