Self-cooling speed regulation type permanent magnet coupler
By using a self-cooled speed-regulating permanent magnet coupling, the coupling area is adjusted by the actuator and ball screw structure. Combined with internal and external air-cooling structures, the heat dissipation and wear problems of disc permanent magnet couplings are solved, achieving a high-reliability and low-maintenance load speed regulation effect.
Patent Information
- Application Number
- CN202520310886.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing disc-type permanent magnet couplings are prone to clogging and wear under complex working conditions, have poor heat dissipation, resulting in short service life, difficult maintenance and high cost, and affect the utilization rate of magnets during operation.
It adopts a self-cooled speed-regulating permanent magnet coupling, which uses the actuator to drive the ball screw structure to adjust the coupling area between the conductor wheel and the magnet wheel. Combined with the internal and external air-cooling structure, it achieves self-cooling, simplifies the cooling system, reduces the number of parts, and uses rare earth alloys and non-magnetic materials to improve heat dissipation efficiency.
It achieves smooth speed regulation of load equipment, reduces failure rate, extends equipment life, reduces maintenance costs, improves equipment reliability and energy-saving effect, and avoids harmonic effects.
Smart Images
Figure CN223809687U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the transmission field in mechanical engineering, concretely is a kind of self-cooled speed-regulating permanent magnet coupling, it can be widely used in building materials, coal, port, electric power, metallurgy, water conservancy, chemical industry and other industries in motor-driven equipment, or the occasion for load equipment to speed-adjustable between various loads. BACKGROUND
[0002] In the magnetic speed-regulating equipment of the prior art, the disc-type magnetic speed-regulating device is similar to a conductor disc and a magnet disc, and the coupling area between the conductor disc and the magnet disc is adjusted by a gear, a rack or a lever, and in a complex and harsh working condition, the rack and the gear are easily covered with dust and oil and blocked, and the adjustment accuracy of the coupling area is fluctuated due to the wear of the gear and the rack in long-term operation. In the above structure, the conductor disc and the magnet disc are both disc-shaped, and a large amount of heat is generated during operation of the device, and the heat inside the magnet wheel cannot be effectively discharged due to the limitation of the disc-shaped heat dissipation structure, thereby affecting the utilization rate of the magnet and reducing the service life of the permanent magnet coupling. The disc-shaped structure is complex, has a large number of components, has high manufacturing cost, high failure rate, poor stability, short service life, is difficult to maintain, and has high maintenance cost. In order to solve and avoid the drawbacks of the disc-shaped permanent magnet coupling, the utility model provides a self-cooled speed-regulating permanent magnet coupling. SUMMARY
[0003] The utility model discloses a self-cooled speed-regulating permanent magnet coupling, which does not generate harmonic waves during operation and does not affect the load equipment, adopts an actuator to drive a ball screw, cooperates with a linear guide pair to drive a movable base to move forward and backward, has a wide speed-regulating range, a stable speed-regulating process, high reliability, soft start characteristics, can output torque according to demand, reduces impact load, protects equipment, effectively dissipates heat, prolongs the service life of the equipment, and has other characteristics.
[0004] To achieve the above object, the utility model takes the technical scheme that a self-cooled speed-regulating permanent magnet coupling, characterized by comprising a permanent magnet coupling input part, a permanent magnet coupling output part and a speed-regulating mechanism.
[0005] The permanent magnet coupling input part comprises an input side hub, a conductor wheel and a heat dissipation impeller, one end of the input side hub is connected with a driving mechanism as a driving end, and the other end is provided with the conductor wheel; and the heat dissipation impeller is installed on a transmission disc of the conductor wheel.
[0006] The output part of the permanent magnet coupling comprises an output side hub and a magnet wheel, one end of the output side hub serves as a load end, and the magnet wheel is mounted on the other end, the gap between the conductor wheel and the magnet wheel is arranged oppositely, and the conductor wheel drives the magnet wheel to rotate together through the magnetic field force;
[0007] The speed regulating mechanism comprises an actuator and a moving base, the actuator drives the moving base to move forward and backward through a ball screw structure, the moving base drives a driving mechanism to move forward and backward, the driving mechanism drives a conductor wheel rigidly connected with the input side hub to move axially, the coupling area between the conductor wheel and the magnet wheel is adjusted, and then the size of the load end torque and the rotating speed is changed.
[0008] Further, the conductor wheel is rigidly connected into an integral whole by a transmission disc, an outer steel ring, an inner steel ring, a first segmented arc-shaped copper plate, a second segmented arc-shaped copper plate, a flow guide cover and a heat dissipation impeller through bolts.
[0009] Still further, the outer steel ring and the inner steel ring are fixed on the transmission disc, the first segmented arc-shaped copper plate is mounted on the inner surface of the outer steel ring, and the second segmented arc-shaped copper plate is mounted on the outer surface of the inner steel ring.
[0010] Still further, the surface of the outer steel ring is processed with a heat dissipation ring for conducting the heat generated by the first segmented arc-shaped copper plate, and the inner conical surface of the inner steel ring is welded with heat dissipation fins, the heat dissipation fins form a certain angle with the axis of the inner steel ring, the axial air volume is increased, and the heat dissipation fins are used for conducting the heat generated by the second segmented arc-shaped copper plate.
[0011] Still further, the transmission disc is provided with a flow guide cover near the heat dissipation fin part of the inner steel ring to form a heat dissipation structure of the inner steel ring.
[0012] Further, the heat dissipation impeller is integrally connected by welding process through a front disc, a blade and a rear disc.
[0013] Further, the magnet wheel comprises a permanent magnet and a magnet ring, the permanent magnet is assembled on the magnet ring, and the magnet ring is rigidly connected with the output side hub.
[0014] Still further, the permanent magnets are embedded in the magnet ring in a uniform distribution manner with different polarities along the circumferential direction of the magnet ring.
[0015] Further, the transmission disc end surface of the conductor wheel is provided with an air inlet, the magnet ring end surface of the magnet wheel coupled with the transmission disc end surface is also provided with a corresponding air inlet, and then an air duct is formed with the heat dissipation structure of the inner steel ring, with the rotation of the permanent magnet coupling, the heat dissipation structure of the inner steel ring performs axial air extraction and sends into the impeller centrifugal air duct.
[0016] Further, the moving base is connected with the actuator through a ball screw structure, and the moving base is also connected with a linear guide rail pair fixed on the base.
[0017] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0018] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0019] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0020] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0021] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0022] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0023] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0024] The self-cooling speed-adjusting permanent magnet coupling has the advantages that:
[0025] The additional aspects and advantages of the self-cooling speed-adjusting permanent magnet coupling will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the self-cooling speed-adjusting permanent magnet coupling. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 Figure 1 is a main sectional view of the self-cooling speed-adjusting permanent magnet coupling.
[0027] Fig. 2 Figure 4 is a schematic view of a bottom speed-adjusting mechanism of the self-cooling speed-adjusting permanent magnet coupling.
[0028] Fig. 3 Figure 5 is a schematic view of a body part of the self-cooling speed-adjusting permanent magnet coupling.
[0029] Fig. 4 Figure 6 is a schematic view of a magnet wheel part of the self-cooling speed-adjusting permanent magnet coupling.
[0030] The components in the diagram are labeled as follows: 1-Input side hub, 2-Transmission disc, 3-Outer steel ring, 4-Inner steel ring, 5-Magnet ring, 6-First segment arc-shaped copper plate, 7-Second segment arc-shaped copper plate, 8-Heat sink, 9-Diffuser, 10-Front disc, 11-Blade, 12-Rear disc, 13-Permanent magnet, 14-Output side hub, 15-Moving base, 16-Actuator, 17-Base, 18-Ball screw structure, 19-Linear guide pair. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0032] like Figs. 1 to 4 As shown, a self-cooled speed-regulating permanent magnet coupling is characterized by comprising a permanent magnet coupling input section, a permanent magnet coupling output section, and a speed-regulating mechanism.
[0033] The permanent magnet coupling input section includes an input side hub 1, a conductor wheel, and a heat dissipation impeller. One end of the input side hub 1 serves as a drive end and is connected to the drive mechanism, while the conductor wheel is mounted on the other end. The heat dissipation impeller is mounted on the transmission disc of the conductor wheel.
[0034] The output section of the permanent magnet coupling includes an output side hub 14 and a magnet wheel. One end of the output side hub serves as the load end, and the magnet wheel is installed on the other end. The conductor wheel and the magnet wheel are positioned with a gap between them. The conductor wheel drives the magnet wheel to rotate together through magnetic field force.
[0035] The speed regulating mechanism includes an actuator 16 and a movable base 15. The actuator 16 is connected to a ball screw structure 18. The ball screw structure 18 drives the movable base 15 to move back and forth. The movable base 15 drives the drive mechanism to move back and forth. The drive mechanism drives the conductor wheel, which is rigidly connected to the input side hub 1, to move axially, thereby adjusting the coupling area between the conductor wheel and the magnet wheel, and thus changing the magnitude of the load-end torque and speed.
[0036] In this embodiment, the conductor wheel is rigidly connected as a whole by bolts, consisting of a transmission disc 2, an outer steel ring 3, a first segmented arc-shaped copper plate 6, an inner steel ring 4, a second segmented arc-shaped copper plate 7, a flow guide shroud 9, and a heat dissipation impeller. All of these components are connected to the drive shaft via the input-side hub 1. Power is provided by the drive-side motor, which drives the entire conductor wheel to rotate. The segmented arc-shaped copper plates on the conductor wheel move within the magnetic field of the permanent magnet, cutting magnetic lines of force, thereby inducing eddy currents and generating magnetic coupling, which in turn drives the permanent magnet wheel to rotate. As the rotational speed increases, the magnetic coupling strength increases, and the input shaft of the load-side device rotates faster, transmitting the input-side torque to the load side.
[0037] The transmission disc 2 is fixed with an outer steel ring 3 and an inner steel ring 4, the inner surface of the outer steel ring 3 is provided with segmented arc copper plates 6, the outer surface of the inner steel ring 4 is provided with segmented arc copper plates 7, and the inner conical surface of the inner steel ring 4 is welded with heat sinks 8, and the transmission disc 2 is provided with a flow guide cover 9.
[0038] The outer steel ring 3 is processed with heat dissipation rings, which help to conduct the heat generated by the segmented arc copper plates 6 and play a heat dissipation role. The inner conical surface of the inner steel ring 4 is welded with heat sinks 8, the heat sinks 8 form a certain angle with the axis of the inner steel ring, increase the axial air volume, help to conduct the heat generated by the segmented arc copper plates 7, and play a heat dissipation role. The transmission disc 2 is provided with a flow guide cover 9 near the inner steel ring heat sink 8 part, forming an inner steel ring heat dissipation structure, which helps to guide air into the air duct.
[0039] In the embodiment, the magnet wheel includes permanent magnets 13 and a magnet ring 5. The permanent magnets 13 are embedded in the magnet ring 5 in a manner that the polarities of the permanent magnets 13 are different along the circumferential direction of the magnet ring 5.
[0040] The permanent magnets 13 are mainly made of a high-performance rare earth alloy of rubidium iron boron, the magnet ring 5 is mainly made of a non-magnetized material such as aluminum, the segmented copper plates are mainly made of a metal material of copper which has excellent electrical conductivity, and the steel disc is made of magnetizable steel.
[0041] In the embodiment, the drive part heat dissipation impeller is connected into one body through a welding process and includes a front disc 10, blades 11, and a rear disc 12. The impeller is designed with the front disc 10, the blades 11, and the rear disc 12 to form a radial centrifugal air exhaust channel, guide the air extracted by the inner steel ring heat dissipation structure into the centrifugal air duct, and take away the heat between the segmented arc copper plates and the permanent magnet wheel to be discharged radially, thereby achieving the magnetic coupling self-cooling heat dissipation effect.
[0042] In the embodiment, the transmission disc 2 is provided with an air outlet on the end surface, and the end surface of the permanent magnet wheel 5 coupled therewith is also provided with a corresponding air inlet, so that an air duct is formed with the inner steel ring heat dissipation structure. With the rotation of the permanent magnet coupling, the inner steel ring heat dissipation structure performs axial air extraction and sends the air into the impeller centrifugal air duct.
[0043] In the embodiment, the moving base 15 is connected with the actuator 16 through a ball screw structure 18, and the moving base 15 is also connected with a linear guide rail pair 19 fixed on the base 17. When the actuator is driven, the moving base 15 moves forward and backward, the moving base 15 moves linearly on the linear guide rail pair 19, and the conductor wheel rigidly connected with the input side wheel hub 1 moves along the axial direction, so as to adjust the coupling area between the conductor wheel and the magnet wheel, change the size of the load end torque and the rotation speed, and realize the load speed regulation and energy saving purposes.
[0044] In conclusion, the permanent magnet coupling adopts the above structure, which adjusts the coupling area between the conductor wheel and the magnet wheel, and further changes the torque and the speed variation of the load end, so as to realize the adjustable and controllable of the torque and the speed of the load end, achieve the speed regulation and energy saving of the load, meanwhile, through the novel internal and external air cooling structure design, the cooling system is integrated and simplified, and the self-cooling of the permanent magnet coupling is realized. Whether the double conductor wheel structure or the actuator belongs to the mechanical device, which is different from the frequency converter speed regulation, and will not produce harmonic wave during operation, and will not cause influence to the load equipment, and is stable and reliable. In the process of speed regulation, the power required by the load is automatically controlled.
[0045] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the above examples do not limit the protection scope of the utility model in any form, and any technical solutions obtained by equivalent replacement or the like fall within the protection scope of the utility model. The parts not involved in the utility model are the same as or can be realized by the prior art.
Claims
1. A self-cooled speed-adjustable permanent magnet coupling, characterized by, The permanent magnet coupling input part, the permanent magnet coupling output part and the speed regulation mechanism are included. The input side hub (1) is connected with the driving mechanism as the driving end, and the conductor wheel is installed on the other end of the input side hub (1). The output side hub (14) and the magnet wheel are included in the permanent magnet coupling output part. The speed regulation mechanism includes the actuator (16) and the moving base (15).
2. A self-cooled speed-adjustable permanent magnet coupling according to claim 1, characterized in that, The conductor wheel is rigidly connected by the bolt to the transmission disc (2), the outer steel ring (3), the inner steel ring (4), the first segmented arc copper plate (6), the second segmented arc copper plate (7), the flow guide cover (9) and the heat dissipation impeller.
3. A self-cooled speed-adjustable permanent magnet coupling according to claim 2, characterized in that, The transmission disc (2) is fixed with the outer steel ring (3) and the inner steel ring (4), the first segmented arc copper plate (6) is installed on the inner surface of the outer steel ring (3), and the second segmented arc copper plate (7) is installed on the outer surface of the inner steel ring (4).
4. A self-cooled speed-adjustable permanent magnet coupling according to claim 3, characterized in that, The outer steel ring (3) is processed with a heat dissipation ring for conducting the heat generated by the first segmented arc copper plate (6).
5. A self-cooled speed-adjustable permanent magnet coupling according to claim 4, characterized in that, The inner steel ring (4) is welded with the heat dissipation fin (8) on the inner conical surface, the heat dissipation fin (8) forms a certain angle with the inner steel ring (4) to increase the axial air volume for conducting the heat generated by the second segmented arc copper plate (7).
6. A self-cooled speed-adjustable permanent magnet coupling according to claim 1, characterized in that, The transmission disc (2) is provided with the flow guide cover (9) near the inner steel ring heat dissipation fin (8) part to form the inner steel ring heat dissipation structure.
7. A self-cooled speed-adjustable permanent magnet coupling according to claim 1, characterized in that, The heat dissipation impeller is integrally connected by the welding process of the front disc (10), the blade (11) and the rear disc (12).
8. A self-cooled speed-adjustable permanent magnet coupling according to claim 7, characterized in that, The magnet wheel includes the permanent magnet (13) and the magnet ring (5), the permanent magnet (13) is assembled on the magnet ring (5), and the magnet ring (5) is rigidly connected with the output side hub (14).
9. A self-cooled speed-adjustable permanent magnet coupling according to claim 1, characterized in that, The permanent magnet (13) is uniformly embedded in the magnet ring (5) in the form of different polarities along the circumferential direction of the magnet ring (5).
10. A self-cooled speed-adjustable permanent magnet coupling according to claim 1, characterized in that, The transmission disc (2) of the conductor wheel is provided with an air inlet on the end face, the magnet ring (5) of the magnet wheel coupled therewith is also provided with a corresponding air inlet on the end face, thereby forming an air duct with the inner steel ring heat dissipation structure, and with the rotation of the permanent magnet coupling, the heat dissipation structure of the inner steel ring performs axial air extraction and sends into the impeller centrifugal air duct. The moving base (15) is connected with the actuator (16) through the ball screw structure (18), and the moving base (15) is also connected with the linear guide rail pair (19) fixed on the base (17).