Composite permanent magnet coupler

Abstract

The utility model discloses a composite permanent magnet coupler, which comprises an integrated composite rotor and a split composite rotor, the integrated composite rotor comprises a base body, a conductor layer A and permanent magnets A, the conductor layer A is arranged on the inner circumferential surface of the base body, and the permanent magnets A are uniformly distributed on the outer circumferential surface of the base body; the split type composite rotor is composed of an outer conductor cylinder and an inner permanent magnet cylinder. The outer conductor cylinder comprises a steel layer and a conductor layer B, and the conductor layer B is arranged on the inner circumferential surface of the steel layer; the inner permanent magnet cylinder comprises a permanent magnet tray and a permanent magnet B; the permanent magnet B is arranged on the outer circumferential surface of the permanent magnet tray; the integrated composite rotor is concentrically sleeved between the outer conductor cylinder and the inner permanent magnet cylinder, and the integrated composite rotor is separated from the outer conductor cylinder and the permanent magnet inner cylinder by air gaps. The utility model has the advantages of simple and compact structure and small occupied space, is suitable for high-power load, and is suitable for popularization and use.

Description

Technical Field

[0001] The utility model relates to a permanent magnetic coupler, in particular to a composite permanent magnetic coupler. Background Art

[0002] Permanent magnetic coupler is a device that uses magnetic force to achieve power transmission. It has the characteristics of simple structure, high reliability, strong environmental adaptability, etc. For permanent magnetic coupler, the greater the torque that can be transmitted between the conductor rotor and the permanent magnetic rotor, the greater the power output of the permanent magnetic speed regulator. How to obtain higher transmittable torque within certain external dimensions and overall weight restrictions, while keeping the structure as simple as possible and easy to dissipate heat, is an urgent problem to be solved.

[0003] Patent CN 104158381 B proposes a double-cylinder permanent magnet speed regulator that uses the outer cylinder and the inner cylinder to interact with the permanent magnet to transmit torque. The permanent magnets are arranged in a manner that the N and S poles are adjacent to each other, and are coupled with the outer cylinder and the inner cylinder at the same time, with a large magnetic coupling area. However, the permanent magnets of this structure can only be arranged in a manner of different poles to ensure that the magnetic fields corresponding to the outer cylinder and the inner cylinder are the same, resulting in restrictions on the development of high power and ultra-high power; and the permanent magnets are fixed with a non-magnetic material carrier, usually aviation aluminum material, which has poor rigidity, is not wear-resistant, and has a high failure rate. Summary of the invention

[0004] The purpose of the utility model is to solve the problems of the existing single-cylinder high-power permanent magnet coupler being too large in size and insufficient in torque, and the double-cylinder permanent magnet coupler being complex in structure, poor in rigidity and high in failure rate, and to provide a permanent magnet coupler with a more compact structure, higher material utilization, greater torque, smaller volume and more reliable structure, with respect to the existing technology.

[0005] The purpose of the utility model is solved by the following technical solutions:

[0006] A composite permanent magnet coupler comprises an integral composite rotor and a split composite rotor, characterized in that: the integral composite rotor comprises a substrate, a conductor layer A and a permanent magnet A, the conductor layer A is arranged on the inner circumferential surface of the substrate, and the permanent magnet A is evenly distributed on the outer circumferential surface of the substrate; the split composite rotor consists of an outer conductor cylinder and an inner permanent magnet cylinder; the outer conductor cylinder comprises a steel layer and a conductor layer B, and the conductor layer B is arranged on the inner circumferential surface of the steel layer; the inner permanent magnet cylinder comprises a permanent magnet tray and a permanent magnet B, and the permanent magnet B is arranged on the outer circumferential surface of the permanent magnet tray; the integral composite rotor is concentrically sleeved between the outer conductor cylinder and the inner permanent magnet cylinder, and the integral composite rotor is separated from the outer conductor cylinder and the inner permanent magnet cylinder by an air gap.

[0007] The integrated composite rotor and the split composite rotor rotate independently around their respective axes. When one of the rotors rotates actively under the drag of the prime mover, the other rotor rotates in the same direction under the action of magnetic force. The active rotor is a split composite rotor or an integrated composite rotor.

[0008] The permanent magnet A of the integrated composite rotor is opposite to the conductor layer B of the outer conductor cylinder, and the conductor layer A of the integrated composite rotor is opposite to the permanent magnet B of the inner permanent magnet cylinder.

[0009] The conductor layer B of the outer conductor cylinder and the conductor layer A of the integrated composite rotor may be made of materials including, but not limited to, copper and aluminum, which are materials with good electrical conductivity.

[0010] The conductor layer B of the outer conductor cylinder is fixed thereon by bolts or rivets, or a composite material is used and formed by centrifugal casting or welding process to form the steel layer of the outer conductor cylinder and the conductor layer B into a whole.

[0011] The conductor layer A of the one-piece composite rotor is fixed to the base by bolts or rivets, or a composite material is used and formed by centrifugal casting and welding process to form the base of the one-piece composite rotor and the conductor layer A into a whole.

[0012] The arrangement of the permanent magnets B on the inner permanent magnet cylinder and the permanent magnets A on the integrated composite rotor includes but is not limited to an alternating arrangement of N poles and S poles and a Halbach array.

[0013] The permanent magnet B on the inner permanent magnet cylinder and the permanent magnet A on the integrated composite rotor can be fixed by a non-magnetic material ring or by wrapping with carbon fiber.

[0014] Compared with the prior art, the utility model has the following advantages: under the same external dimensions, it can transmit greater torque than a single-tube permanent magnetic coupler without increasing the axial width; compared with other multi-tube permanent magnetic couplers, it has a simpler structure, is conducive to heat dissipation, and has higher reliability. The composite permanent magnetic coupler has a simple structure, is easy to install, has strong environmental adaptability, is suitable for high-power loads, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a structural schematic diagram of the composite permanent magnetic coupler of the utility model;

[0016] Attached Figure 2 It is a structural schematic diagram of a split composite rotor of a composite permanent magnetic coupler of the utility model;

[0017] Attached Figure 3 It is a structural schematic diagram of the composite permanent magnet coupler integrated composite rotor of the utility model;

[0018] Wherein: 1-outer conductor cylinder, 11-steel layer, 12-conductor layer B, 2-inner permanent magnet cylinder, 21-permanent magnet tray, 22-permanent magnet B, 3-integrated composite rotor, 31-base, 32-conductor layer A, 33-permanent magnet A, 4-split composite rotor. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 The invention discloses a composite permanent magnet coupler, comprising an integrated composite rotor (3) and a split composite rotor (4), wherein the integrated composite rotor (3) comprises a substrate (31), a conductor layer A (32) and permanent magnets A (33), wherein the conductor layer A (32) is arranged on the inner circumference of the substrate (31), and the permanent magnets A (33) are evenly distributed on the outer circumference of the substrate (31); the split composite rotor (4) comprises an outer conductor cylinder (1) and an inner permanent magnet cylinder (2); the outer conductor cylinder (1) comprises a The invention comprises a steel layer (11) and a conductor layer B (12), wherein the conductor layer B (12) is arranged on the inner circumference of the steel layer (11); the inner permanent magnet cylinder (2) comprises a permanent magnet tray (21) and a permanent magnet B (22), wherein the permanent magnet B (22) is arranged on the outer circumference of the permanent magnet tray (21); the integrated composite rotor (3) is concentrically sleeved between the outer conductor cylinder (1) and the inner permanent magnet cylinder (2), and the integrated composite rotor (3) is separated from the outer conductor cylinder (1) and the inner permanent magnet cylinder (2) by an air gap. The permanent magnet A (33) of the integrated composite rotor (3) is opposite to the conductor layer B (12) of the outer conductor cylinder (1), and the conductor layer A (32) of the integrated composite rotor (3) is opposite to the permanent magnet B (22) of the inner permanent magnet cylinder (2).

[0021] The integrated composite rotor (3) and the split composite rotor (4) rotate independently around their respective axes. When one of the rotors rotates actively under the drag of the prime mover, the other rotor rotates in the same direction under the action of magnetic force. The active rotor can be the split composite rotor (4) or the integrated composite rotor (3). That is, when the permanent magnetic coupler is working, the outer conductor cylinder (1) and the inner permanent magnetic cylinder (2) rotate synchronously under the drive of the prime mover. Since the conductor layer B (12) and the permanent magnet A (33) are opposite to each other, and the conductor layer A (32) and the permanent magnet B (22) are opposite to each other, the conductor layer B (12) and the conductor layer A (32) will cut the magnetic lines of the permanent magnet A (33) and the permanent magnet B (22) respectively and generate eddy currents. The magnetic fields generated by the eddy currents interact with the magnetic fields of the permanent magnet A (33) and the permanent magnet B (22) respectively, so as to achieve the effect of transmitting torque and realize the superposition of the torque transmission effect. The integrated composite rotor (3) and the split composite rotor (4) can move relative to each other in the axial direction to achieve a speed regulation function; if the distance between the integrated composite rotor (3) and the split composite rotor (4) is large, the torque transmitted is small and the speed is low; if the distance is small, the torque transmitted is large and the speed is high.

[0022] In the above structure, the conductor layer B (12) of the outer conductor tube (1) and the conductor layer A (32) of the integrated composite rotor (3) are made of materials including but not limited to copper, aluminum and other materials with good electrical conductivity.

[0023] In the above structure, the conductor layer B (12) of the outer conductor tube (1) is fixed to the steel layer (11) by bolts or rivets, and the conductor layer A (32) of the integrated composite rotor (3) is fixed to the base (31) by bolts or rivets; the steel layer (11) of the outer conductor tube (1) and the conductor layer B (12) may also be formed into a whole by using composite materials or by using processes such as centrifugal casting and welding.

[0024] In the above structure, the arrangement of the permanent magnets B (22) on the inner permanent magnet cylinder (2) and the permanent magnets A (33) on the integrated composite rotor (3) includes but is not limited to an alternating arrangement of N poles and S poles, a Halbach array, etc.

[0025] In the above structure, the permanent magnet B (22) on the inner permanent magnet cylinder (2) and the permanent magnet A (33) on the integrated composite rotor (3) can be fixed by a ring of non-magnetic material (including but not limited to stainless steel, titanium alloy, etc.), or by wrapping with carbon fiber, etc.

[0026] The above embodiments are only for illustrating the technical idea of ​​the utility model, and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the utility model; any technology not involved in the utility model can be realized by existing technology.

Claims

1. A composite permanent magnet coupler, comprising an integrated composite rotor (3) and a split composite rotor (4), characterized in that: The integrated composite rotor (3) comprises a substrate (31), a conductor layer A (32) and permanent magnets A (33), wherein the conductor layer A (32) is arranged on the inner circumference of the substrate (31), and the permanent magnets A (33) are evenly distributed on the outer circumference of the substrate (31). The split composite rotor (4) comprises an outer conductor cylinder (1) and an inner permanent magnet cylinder (2). The outer conductor cylinder (1) comprises a steel layer (11) and a conductor layer B (12), wherein the conductor layer B (12) is arranged on the inner circumference of the steel layer (11). The inner permanent magnet cylinder (2) comprises a permanent magnet tray (21) and permanent magnets B (22), wherein the permanent magnets B (22) are arranged on the outer circumference of the permanent magnet tray (21). The integrated composite rotor (3) is concentrically sleeved between the outer conductor cylinder (1) and the inner permanent magnet cylinder (2), and the integrated composite rotor (3) is separated from the outer conductor cylinder (1) and the inner permanent magnet cylinder (2) by an air gap.

2. A composite permanent magnetic coupler according to claim 1, characterized in that: The integrated composite rotor (3) and the split composite rotor (4) rotate independently around their respective axes. When one of the rotors actively rotates under the drag of the prime mover, the other rotor rotates in the same direction under the action of magnetic force. The active rotor is the split composite rotor (4) or the integrated composite rotor (3).

3. A composite permanent magnetic coupler according to claim 1, characterized in that: The permanent magnet A (33) of the integrated composite rotor (3) is opposite to the conductor layer B (12) of the outer conductor cylinder (1), and the conductor layer A (32) of the integrated composite rotor (3) is opposite to the permanent magnet B (22) of the inner permanent magnet cylinder (2).

4. A composite permanent magnetic coupler according to claim 1, characterized in that: The materials of the conductor layer B (12) of the outer conductor tube (1) and the conductor layer A (32) of the integrated composite rotor (3) include, but are not limited to, copper and aluminum, materials with good electrical conductivity.

5. The composite permanent magnetic coupler according to claim 1, characterized in that: The conductor layer B (12) of the outer conductor tube (1) is fixed thereto by bolts or rivets, or a composite material is used and formed by centrifugal casting or welding process, so that the steel layer (11) of the outer conductor tube (1) and the conductor layer B (12) become a whole.

6. A composite permanent magnetic coupler according to claim 1, characterized in that: The conductor layer A (32) of the integrated composite rotor (3) is fixed to the base (31) by bolts or rivets; or a composite material is used and formed by centrifugal casting or welding process to form the base (31) and the conductor layer A (32) of the integrated composite rotor (3) into a whole.

7. The composite permanent magnetic coupler according to claim 1, characterized in that: The arrangement of the permanent magnets B (22) on the inner permanent magnet cylinder (2) and the permanent magnets A (33) on the integrated composite rotor (3) includes but is not limited to an alternating arrangement of N poles and S poles and a Halbach array.

8. The composite permanent magnetic coupler according to claim 1, characterized in that: The permanent magnet B (22) on the inner permanent magnet cylinder (2) and the permanent magnet A (33) on the integrated composite rotor (3) are fixed by a non-magnetic material ring or by wrapping with carbon fiber.

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