CN206850655U - A kind of spherical permanent magnetic coupling of fixed air gap - Google Patents

Abstract

The utility model discloses a kind of spherical permanent magnetic coupling of fixed air gap.It includes drive shaft and driven shaft；Also include being connected to the conductor rotor on the right side of the drive shaft；The p-m rotor being arranged on the outside of the driven shaft；The conductor rotor has a spherical chamber, and the p-m rotor is located in the spherical chamber；The medial surface of the conductor rotor posts copper conductor, the copper conductor and the p-m rotor it is cylindrical between be spaced by spherical air gap.The utility model takes full advantage of sphere to provide bigger operating magnetic field flux, and under the overall dimensions maintained like, can transmit higher moment of torsion；The magnetic flux points to spherical air gap, the i.e. magnetic flux with radial direction along p-m rotor sphere, it may have axial magnetic flux, the advantages of having tubular and desk permanent-magnet coupler concurrently.

Description

A Spherical Permanent Magnetic Coupler with Fixed Air Gap

technical field

The utility model relates to a magnetic coupling device, in particular to a spherical permanent magnetic coupler with a fixed air gap.

Background technique

The permanent magnetic coupler is a device that realizes the torque transmission from the motor to the load through the air gap between the copper conductor and the permanent magnet, and can realize the transmission mode without mechanical connection between the motor and the load. Its working principle is that when the two move relative to each other, the copper conductor cuts the magnetic force line, generates eddy current in the copper conductor, and the eddy current then generates an induced magnetic field, which interacts with the magnetic field generated by the permanent magnet, thereby realizing the torque between the two transmission.

The permanent magnetic coupler has the functions of buffer start and overload protection, and can eliminate the vibration transmission between the motor and the load, and has a remarkable energy-saving effect, with a power saving rate of 25% to 66%. It can adapt to various harsh environments, so it has won Wide range of applications.

The existing permanent magnetic couplers with fixed air gap mainly include cylindrical permanent magnetic couplers and disc permanent magnetic couplers. The magnetic force direction of the cylindrical permanent magnetic couplers is radial, which allows large axial movement. However, the space occupied by the axial direction is large; the magnetic force direction of the disc permanent magnetic coupler is axial, and the requirements for axial movement are very strict, but the axial space is small. In summary, the above two permanent magnetic couplers have their own advantages and disadvantages.

Utility model content

In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to propose a fixed air gap spherical permanent magnetic coupler with more efficient torque transmission and a more compact and reasonable structure. It has both the advantages of the cylindrical permanent magnetic coupler and the disc permanent magnetic coupler, and removes its disadvantages

In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions to realize.

A spherical permanent magnet coupler with a fixed air gap, including a drive shaft and a driven shaft; a conductor rotor connected to the right side of the drive shaft; a permanent magnet rotor passing through the outside of the driven shaft; the The conductor rotor has a spherical chamber, and the permanent magnet rotor is located in the spherical chamber; the inner surface of the conductor rotor is pasted with a copper conductor, and the spherical air is passed between the copper conductor and the outer circle of the permanent magnet rotor. separated by gaps.

Preferably, the conductor rotor includes a first conductor rotor; the first conductor rotor includes a first hollow hemispherical body part, a first connecting part extending outward from a middle position of the outer wall of the first hollow hemispherical body part; A second connection part extending outward from the connection between the outer wall of the first hollow hemispherical main body and a section.

Preferably, the conductor rotor includes a second conductor rotor; the second conductor rotor includes a second hollow hemispherical main body; a third connection extending from the outer wall of the second hollow hemispherical main body and a joint of a section part; the first hollow hemispherical body part and the second hollow hemispherical body part enclose the spherical chamber; the connection between the first connecting part and the flange shoulder of the drive shaft passes through a first fastener connection; the second connection part is connected to the third connection part through a second fastener.

Preferably, the hemispherical copper conductor includes a first copper conductor and a second copper conductor, the first copper conductor is located on the inner side of the first hollow hemispherical main part of the first conductor rotor; the second copper conductor The conductor is located on the inner side of the second hollow hemispherical body portion of the second conductor rotor.

Preferably, the permanent magnet rotor is composed of a first permanent magnet rotor and a second permanent magnet rotor; the first permanent magnet rotor is screwed to the driven shaft and fastened with a shaft end lock nut; the second The two permanent magnet rotors are connected with the driven shaft through the third fastener.

Preferably, both the first permanent magnet rotor and the second permanent magnet rotor include a hemispherical iron core made of soft iron, and permanent magnetic steel disposed in the hemispherical core; the hemispherical iron core is provided with The permanent magnet slot, the permanent magnet steel is inserted in the permanent magnet slot.

Beneficial effects of the utility model: the utility model makes full use of the spherical surface of the rotor and the magnetization effect of the tangential permanent magnet built in the spherical rotor, which can provide greater effective working flux while maintaining the same external dimensions Higher torque can be transmitted; and the magnetic flux points to the spherical air gap along the spherical surface of the permanent magnet rotor, that is, it has radial magnetic flux and axial magnetic flux, and has both cylindrical and disc permanent magnetic couplers The advantages.

Description of drawings

Fig. 1 is a cross-sectional view of a permanent magnetic coupler with a fixed air gap of the present invention.

Fig. 2 is a schematic diagram of a permanent magnet rotor of a permanent magnet coupler with a fixed air gap of the present invention.

In the figure: drive shaft 1-1; driven shaft 1-2; first fastener 2-1; second fastener 2-2; third fastener 2-3; shaft end lock nut 3; The first permanent magnet rotor 4-1; the first permanent magnet rotor 4-2; the spherical conductor rotor 5-1; the first hollow hemispherical main body part 5-1-1; the first connecting part 5-1-2; Connection part 5-1-3; spherical conductor rotor 5-2; second hollow hemispherical body part 5-2-1; third connection part 5-2-2; copper conductor 6-1; copper conductor 6-2; permanent magnet groove 7; permanent magnetic steel 8; spherical gap 9; flange shoulder 10.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 2, a spherical permanent magnetic coupler with a fixed air gap provided by the embodiment of the utility model includes a drive shaft 1-1 and a driven shaft 1-2; connected to the drive shaft 1- 1. Conductor rotor on the right side; permanent magnet rotor passing through the outside of the driven shaft 1-2; the conductor rotor has a spherical chamber, and the permanent magnet rotor is located in the spherical chamber; the conductor rotor A copper conductor is pasted on the inner surface of the inner surface of the permanent magnet rotor, and the copper conductor is separated from the outer circle of the permanent magnet rotor by a spherical air gap 9 .

The conductor rotor consists of a first conductor rotor 5-1 and a second conductor rotor 5-2.

The first conductor rotor 5-1 includes a first hollow hemispherical body part 5-1-1, a first connecting part 5 extending outward from the middle position of the outer wall of the first hollow hemispherical body part 5-1-1 -1-2; the second connection part 5-1-3 extending outward from the connection between the outer wall of the first hollow hemispherical body part 5-1-1 and a section.

The second conductor rotor 5-2 includes a second hollow hemispherical body part 5-2-1; a third part extending outward from the junction of the outer wall of the second hollow hemispherical body part 5-2-1 and a section. Connection part 5-2-2.

The first hollow hemispherical body part 5-1-1 and the second hollow hemispherical body part 5-2-1 enclose the spherical chamber. The first connecting part 5-1-2 is connected to the flange shoulder 10 of the driving shaft 1-1 through the first fastener 2-1, and the driving shaft 1-1 is connected to the first The conductor rotors 5-1 are connected. The second connecting part 5-1-3 is connected to the third connecting part 5-2-2 through the second fastener 2-2, and connects the first conductor rotor 5-1 and the second conductor The rotors 5-2 are connected.

The hemispherical copper conductor includes a first copper conductor 6-1 and a second copper conductor 6-2, and the first copper conductor 6-1 is located at the first hollow hemispherical body part of the first conductor rotor 5-1 5-1-1 inner side; the second copper conductor 6-2 is located on the inner side of the second hollow hemispherical main part 5-2-1 of the second conductor rotor 5-2.

The permanent magnet rotor is composed of a first permanent magnet rotor 4-1 and a second permanent magnet rotor 4-2. The first permanent magnet rotor 4 - 1 is screwed to the driven shaft 1 - 2 and fastened with a lock nut 3 at the shaft end. The second permanent magnet rotor 4-2 is connected with the driven shaft 1-2 through a third fastener 2-3. The first fastener 2-1, the second fastener 2-2, and the third fastener 2-3 are one of bolts, screws or studs.

The spherical air gap 9 is provided between the first permanent magnet rotor 4-1 and the first copper conductor 6-1, and between the second permanent magnet rotor 4-2 and the second copper conductor 6-2. .

Both the first permanent magnet rotor 4-1 and the second permanent magnet rotor 4-2 include a hemispherical iron core made of soft iron, and a permanent magnet steel 8 disposed in the hemispherical core. A permanent magnet slot 7 is provided on the hemispherical iron core, and the permanent magnet steel 8 is inserted into the permanent magnet slot 7 . The permanent magnet slot 7 and the permanent magnet steel 8 inside it are trapezoidal structures in the hemisphere. The permanent magnet 8 adopts circumferential magnetization, and the magnetic pole distribution of the permanent magnet 8 is shown in FIG. 2 .

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (6)

1. A spherical permanent magnetic coupler with a fixed air gap, comprising a drive shaft and a driven shaft; it is characterized in that: it also includes a conductor rotor connected to the right side of the drive shaft (1-1); it passes through the The permanent magnet rotor on the outside of the driven shaft (1-2); the conductor rotor has a spherical cavity, and the permanent magnet rotor is located in the spherical cavity; the inner surface of the conductor rotor is pasted with a copper conductor, the The copper conductor is separated from the outer circle of the permanent magnet rotor by a spherical air gap (9). 2. The spherical permanent magnet coupler with fixed air gap according to claim 1, characterized in that: the conductor rotor comprises a first conductor rotor (5-1); the first conductor rotor (5-1) comprises The first hollow hemispherical body part (5-1-1), the first connecting part (5-1-2) extending outward from the middle position of the outer wall of the first hollow hemispherical body part (5-1-1) ; A second connection portion (5-1-3) extending outward from the connection between the outer wall of the first hollow hemispherical body portion (5-1-1) and a section. 3. The spherical permanent magnet coupler with fixed air gap according to claim 2, characterized in that: the conductor rotor comprises a second conductor rotor (5-2); the second conductor rotor (5-2) comprises The second hollow hemispherical body part (5-2-1); the third connection part (5-2-1) extending outward from the outer wall of the second hollow hemispherical body part (5-2-1) and the junction of a section 2); the first hollow hemispherical body part (5-1-1) and the second hollow hemispherical body part (5-2-1) enclose the spherical chamber; the first connecting part (5 -1-2) The connection with the flange shoulder (10) of the drive shaft (1-1) through the first fastener (2-1); the second connection part (5-1-3) It is connected with the third connecting part (5-2-2) through a second fastener (2-2). 4. The spherical permanent magnetic coupler with fixed air gap according to claim 3, characterized in that: said hemispherical copper conductor comprises a first copper conductor (6-1) and a second copper conductor (6-2), The first copper conductor (6-1) is located on the inner side of the first hollow hemispherical body part (5-1-1) of the first conductor rotor (5-1); the second copper conductor (6 -2) Located on the inner side of the second hollow hemispherical body part (5-2-1) of the second conductor rotor (5-2). 5. The spherical permanent magnet coupler with fixed air gap according to claim 3, characterized in that: said permanent magnet rotor consists of a first permanent magnet rotor (4-1) and a second permanent magnet rotor (4-2) Composition; the first permanent magnet rotor (4-1) is screwed to the driven shaft (1-2), and fastened with a shaft end lock nut (3); the second permanent magnet rotor (4- 2) Connect with the driven shaft (1-2) through a third fastener (2-3). 6. The spherical permanent magnet coupler with fixed air gap according to claim 5, characterized in that: the first permanent magnet rotor (4-1) and the second permanent magnet rotor (4-2) both include A hemispherical core made of soft iron, and a permanent magnet (8) arranged in the hemispherical core; a permanent magnet slot (7) is provided on the hemispherical core, and the permanent magnet (8) is inserted into In the permanent magnet slot (7).