CN-224218268-U - Radial magnetic flux electromagnetic coupling

CN224218268UCN 224218268 UCN224218268 UCN 224218268UCN-224218268-U

Abstract

The utility model relates to a radial magnetic flux electromagnetic coupling which comprises a driving shaft, a driven shaft, a driving shaft rotor, permanent magnets, iron cores and magnetic pole coils, wherein the coupling line and the driven shaft are connected, the driving shaft rotor is fixed on the driving shaft, the permanent magnets are uniformly fixed on the inner surface of the driving shaft rotor along the circumferential direction, the polarities of adjacent permanent magnets are opposite, the iron cores are fixed on the driven shaft, the magnetic pole coils are embedded in the iron cores, the winding directions of the adjacent magnetic pole coils are opposite, and the permanent magnets are radially aligned with the iron cores to form a radial magnetic flux coupling structure. Compared with the traditional rigid, elastic coupling and permanent magnet coupling, the radial magnetic flux electromagnetic coupling has adjustable torque and self-centering operation, and realizes high-quality transmission of electromagnetic torque.

Inventors

ZHANG YANG
WU YI
Zhao tairan
YAO JIAYI
DING YAN

Assignees

中国船舶集团有限公司第七〇四研究所

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (6)

1. A radial magnetic flux electromagnetic coupling is characterized by comprising a driving shaft, a driven shaft, a driving shaft rotor, permanent magnets, iron cores and magnetic pole coils, wherein a connecting line and the driven shaft are arranged on the driving shaft, the driving shaft rotor is fixed on the driving shaft, the permanent magnets are uniformly fixed on the inner surface of the driving shaft rotor along the circumferential direction, the polarities of adjacent permanent magnets are opposite, the iron cores are fixed on the driven shaft, the magnetic pole coils are embedded in the iron cores, the winding directions of the adjacent magnetic pole coils are opposite, and the permanent magnets are radially aligned with the iron cores to form a radial magnetic flux coupling structure.
2. The radial flux electromagnetic coupling of claim 1, wherein the pole coil is externally sleeved with a grommet.
3. The electromagnetic coupling of claim 1, wherein the pole coils are further secured to the core by a mounting bracket.
4. The radial flux electromagnetic coupling of claim 1, wherein the coupling wire is connected to a pole coil, the pole coil being connected to an external DC power source via the coupling wire.
5. The radial flux electromagnetic coupling of claim 1, wherein the external DC power source is provided by brushes, a brushless excitation system, or a wireless energy transfer device.
6. The radial flux electromagnetic coupling of claim 1, wherein the permanent magnet inner diameter and the core outer diameter are concentric.

Description

Radial magnetic flux electromagnetic coupling Technical Field The utility model relates to a non-contact transmission device, in particular to a radial magnetic flux electromagnetic coupling which realizes torque adjustment through electromagnetic coupling, and is suitable for industrial scenes in which torque is required to be accurately controlled or vibration is isolated. Background Rotary machines typically connect a drive shaft and a driven shaft through a coupling and transmit motion and torque from the drive shaft. The traditional coupling is generally a rigid coupling or an elastic coupling, and is a contact type transmission. The magnetic coupling is a contactless transmission device for transmitting torque based on magnetic field coupling, and generally utilizes a permanent magnet to establish a magnetic field between a driving shaft and a driven shaft so as to realize torque transmission. In the prior art, a magnetic field between a driving shaft and a driven shaft of a magnetic coupling is established by permanent magnets, the magnetic field strength cannot be changed, the electromagnetic torque cannot be adjusted, the permanent magnets of the magnetic coupling are more in consumption and high in cost, the interaction force of the permanent magnets between the driving shaft and the driven shaft is large, centering is difficult, and the starting torque of the magnetic coupling is large. For example, CN110855123a discloses a coupling for adjusting torque by exciting a coil, but its outer magnet is a coil, its inner magnet is a permanent magnet, and its structure is complex and air gap is large. According to the utility model, by optimizing the layout of the magnetic circuit, the permanent magnets are arranged on the driving shaft and the coils are arranged on the driven shaft, and the radial magnetic flux design is adopted, so that the dosage of the permanent magnets is obviously reduced, and the torque adjusting precision is improved. Disclosure of Invention In order to solve the problems in the prior art, the utility model provides a radial magnetic flux electromagnetic coupler with adjustable torque, which realizes high-quality transmission of electromagnetic torque and adjustable electromagnetic torque through reasonable combination of a driving shaft rotor, a permanent magnet, an iron core, a magnetic pole coil, a fixing frame, a connecting wire and the like. The technical scheme includes that the radial magnetic flux electromagnetic coupler comprises a driving shaft, a driven shaft, a driving shaft rotor, permanent magnets, iron cores and magnetic pole coils, wherein the driving shaft rotor is fixed on the driving shaft, the permanent magnets are uniformly fixed on the inner surface of the driving shaft rotor along the circumferential direction, the polarities of adjacent permanent magnets are opposite, the iron cores are fixed on the driven shaft, the magnetic pole coils are embedded in the iron cores, the winding directions of the adjacent magnetic pole coils are opposite, and the permanent magnets are aligned with the iron cores in the radial direction to form a radial magnetic flux coupling structure. Further, a guard ring is sleeved outside the magnetic pole coil. Further, the magnetic pole coil and the iron core are fixed through a fixing frame. Further, the connecting wire is connected with the magnetic pole coil, and the magnetic pole coil is connected with an external direct current power supply through the connecting wire. Further, the external direct current power supply is provided by a brush, a brushless excitation system or a wireless energy transmission device. Further, the permanent magnet inner diameter and the core outer diameter are concentric. The utility model has the beneficial effects that: The radial magnetic flux electromagnetic coupler is applied to non-contact transmission, provides an excitation energy source for a magnetic pole coil of the electromagnetic coupler through an external direct current power supply, establishes a magnetic field, and is coupled with the magnetic field established by a driving shaft permanent magnet, so that electromagnetic torque is transmitted from a driving shaft to a driven shaft. Compared with the traditional rigid, elastic coupling and permanent magnet coupling, the radial magnetic flux electromagnetic coupling has adjustable torque and self-centering operation, and realizes high-quality transmission of electromagnetic torque. Drawings FIG. 1 is a schematic view of a radial electromagnetic coupling of the present utility model; In the figure, a driving shaft 1, a driving shaft rotor 2, a fixing frame 3, a permanent magnet 4, an iron core 5, a protecting ring 6, a magnetic pole coil 7, a connecting wire 8 and a driven shaft 9 are shown. Detailed Description The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical sch