A two-stage series magnetic wheel transmission device

Abstract

The invention discloses a two-stage series magnetic wheel transmission device, comprising an input shaft, a first inner magnetic ring, a first modulation ring, a first outer magnetic ring, a flange, a transition shaft, a second outer magnetic ring, a second modulation ring, a second inner magnetic ring, and an output shaft. The input shaft is connected to the first inner magnetic ring in a transmission manner, the first inner magnetic ring, the first modulation ring and the first outer magnetic ring are concentrically mounted, the first modulation ring is connected to the transition shaft in a transmission manner through a flange, the transition shaft is connected to the second inner magnetic ring in a transmission manner, the second inner magnetic ring, the second modulation ring and the second outer magnetic ring are concentrically mounted, and the second modulation ring is connected to the output shaft in a transmission manner; the input shaft drives the first inner magnetic ring to rotate, and pushes the first modulation ring to rotate at a low speed, the first modulation ring drives the second inner magnetic ring to rotate through the transition shaft, and pushes the second modulation ring to rotate, and the second modulation ring drives the output shaft to run to complete the process of two-stage speed change. The two-stage series magnetic wheel transmission device of the invention has a simple and compact structure, a large transmission ratio, a large torque density, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet gears, in particular to a two-stage series magnetic wheel transmission device based on the magnetic field modulation principle. Background Art

[0002] Magnetic wheel transmission is a device that uses magnetic force to achieve transmission and speed change. The transmission ratio of the magnetic wheel transmission depends on the number of magnetic poles of the inner magnetic ring and the outer magnetic ring. Theoretically, a single-stage large transmission ratio and large torque transmission can be achieved by increasing the radial size. However, due to the limitations of torque density and torque fluctuation, the transmission ratio cannot be designed to be too large, so it cannot be used in systems with large transmission ratios. Summary of the invention

[0003] The purpose of the present invention is to provide a two-stage series magnetic wheel transmission device in view of the problems existing in the prior art, which solves the problems of small transmission ratio and low torque density of the existing magnetic wheel transmission, and provides a two-stage series magnetic wheel transmission device with simple structure, large transmission ratio and high torque density.

[0004] The purpose of the present invention is to be solved by the following technical solutions:

[0005] A two-stage series magnetic wheel transmission device comprises an input shaft, a first inner magnetic ring, a first modulation ring, a first outer magnetic ring, a flange, a transition shaft, a second outer magnetic ring, a second modulation ring, a second inner magnetic ring, and an output shaft, wherein the input shaft is transmission-connected to the first inner magnetic ring, the first inner magnetic ring, the first modulation ring and the first outer magnetic ring are concentrically sleeved together, the first inner magnetic ring is located in the inner cavity of the first modulation ring and separated by an air gap, the first modulation ring is located in the inner cavity of the first outer magnetic ring and separated by an air gap, the first outer magnetic ring is fixed, the first modulation ring is transmission-connected to the flange, the flange is transmission-connected to the transition shaft, the transition shaft is transmission-connected to the second inner magnetic ring, the second inner magnetic ring, the second modulation ring and the second outer magnetic ring are concentrically sleeved together, The second inner magnetic ring is located in the inner cavity of the second modulation ring and is separated by an air gap. The second modulation ring is located in the inner cavity of the second outer magnetic ring and is separated by an air gap. The second outer magnetic ring is fixed and stationary. The second modulation ring is connected to the output shaft in driving connection. The above arrangement constitutes a two-stage series magnetic wheel transmission device. The input shaft drives the first inner magnetic ring to rotate. The magnetic field of the first inner magnetic ring acts on the first outer magnetic ring after being modulated by the first modulation ring, pushing the first modulation ring to rotate at a low speed. The first modulation ring drives the transition shaft to rotate through the flange. The transition shaft drives the second inner magnetic ring to rotate. The magnetic field of the second inner magnetic ring acts on the second outer magnetic ring after being modulated by the second modulation ring, pushing the second modulation ring to rotate. The second modulation ring drives the output shaft to run to complete the two-stage speed change process.

[0006] The first inner magnetic ring includes a first inner magnetic yoke and a first inner magnet, the pole pair number of the first inner magnet is p1, the first modulation ring includes a first magnetic adjustment block and a first magnetic isolation block, the first magnetic adjustment block and the first magnetic isolation block are arranged at intervals, the number of the first magnetic adjustment blocks is p3, the first outer magnetic ring includes a first outer magnetic yoke and a first outer magnet, the pole pair number of the first outer magnet is p2, and the relationship between the pole pair number p1 of the first inner magnet, the number p3 of the first magnetic adjustment blocks and the pole pair number p2 of the first outer magnet is p3=p1+p2.

[0007] The second inner magnetic ring includes a second inner magnetic yoke and a second inner magnet, and the pole pair number of the second inner magnet is p4. The second modulation ring includes a second magnetic adjustment block and a second magnetic isolation block. The second magnetic adjustment block and the second magnetic isolation block are arranged at intervals, and the number of the second magnetic adjustment blocks is p6. The second outer magnetic ring includes a second outer magnetic yoke and a second outer magnet, and the pole pair number of the second outer magnet is p5. The relationship between the pole pair number p4 of the second inner magnet, the number p6 of the second magnetic adjustment blocks and the pole pair number p5 of the second outer magnet is p6=p4+p5.

[0008] The two end surfaces of the first outer magnetic ring are respectively fixed to the first end cover and the second end cover. The first end cover is connected to the input shaft through the first bearing. One end of the input shaft passes through the first end cover. The second end cover is connected to the flange through the fourth bearing.

[0009] The first modulation ring is connected to the input shaft through the second bearing and the third bearing.

[0010] The two end surfaces of the second outer magnetic ring are respectively fixed to the third end cover and the fourth end cover. The third end cover is connected to the transition shaft through the fifth bearing, and the fourth end cover is connected to the output shaft through the eighth bearing. One end of the output shaft passes through the fourth end cover.

[0011] The second modulation ring is connected to the transition shaft via the sixth bearing and the seventh bearing.

[0012] The second end cover and the third end cover are connected via a dustproof ring.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The present invention realizes two-stage transmission by connecting two magnetic wheel transmission devices in series. The input shaft drives the first inner magnetic ring to rotate, which pushes the first modulation ring to rotate at a low speed. The first modulation ring drives the transition shaft to rotate. The transition shaft drives the second inner magnetic ring to rotate, which pushes the second modulation ring to rotate. The second modulation ring drives the output shaft to run to complete the two-stage speed change process. The two-stage series magnetic wheel transmission device has a compact and simple structure, a large transmission ratio, a large torque density, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1It is a schematic structural diagram of an embodiment of a two-stage series magnetic wheel transmission device of the present invention;

[0016] Attached Figure 2 For attachment Figure 1 Schematic diagram of the cross-section AA structure;

[0017] Attached Figure 3 For attachment Figure 1 Schematic diagram of the cross-section BB structure;

[0018] Among them: 1 input shaft; 2 first inner magnetic rotor; 2-1 first inner magnetic yoke; 2-2 first inner magnet; 3 first modulation ring; 3-1 first magnetic adjustment block; 3-2 first magnetic isolation block; 4 first end cover; 5 first outer magnetic rotor; 5-1 first outer magnetic yoke; 5-2 first outer magnet; 6 second end cover; 7 flange; 8 transition shaft; 9 third end cover; 10 second outer magnetic rotor; 10-1 second outer magnetic yoke; 10-2 second outer magnet; 11 second modulation ring; 11-1 second magnetic adjustment block; 11-2 second magnetic isolation block; 12 second inner magnetic rotor; 12-1 second inner magnetic yoke; 12-2 second inner magnet; 13 fourth end cover; 14 output shaft; 15 dust ring; 16 first bearing; 17 second bearing; 18 third bearing; 19 fourth bearing; 20 fifth bearing; 21 sixth bearing; 22 seventh bearing; 23 eighth bearing. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 , 2, 3: A two-stage series magnetic wheel transmission device, comprising an input shaft (1), a first inner magnetic ring (2), a first modulation ring (3), a first outer magnetic ring (5), a flange (7), a transition shaft (8), a second outer magnetic ring (10), a second modulation ring (11), a second inner magnetic ring (12), and an output shaft (14), characterized in that: the input shaft (1) is transmission-connected to the first inner magnetic ring (2), the first inner magnetic ring (2), the first modulation ring (3) and the first outer magnetic ring (5) are concentrically sleeved together, the first inner magnetic ring (2) is located in the inner cavity of the first modulation ring (3) and separated by an air gap, the first modulation ring (3) is located in the inner cavity of the first outer magnetic ring (5) and separated by an air gap, The first outer magnetic ring (5) is fixed, the first modulation ring (3) is transmission-connected to the flange (7), the flange (7) is transmission-connected to the transition shaft (8), the transition shaft (8) is transmission-connected to the second inner magnetic ring (12), the second inner magnetic ring (12), the second modulation ring (11) and the second outer magnetic ring (10) are concentrically sleeved together, the second inner magnetic ring (12) is located in the inner cavity of the second modulation ring (11) and is separated by an air gap, the second modulation ring (11) is located in the inner cavity of the second outer magnetic ring (10) and is separated by an air gap, the second outer magnetic ring (10) is fixed, and the second modulation ring (11) is transmission-connected to the output shaft (14). The above arrangement constitutes a two-stage series magnetic wheel transmission device. Specifically, with respect to the structures of the first inner magnetic ring (2), the first modulation ring (3) and the first outer magnetic ring (5), the first inner magnetic ring (2) comprises a first inner magnetic yoke (2-1) and a first inner magnet (2-2), the number of magnetic pole pairs of the first inner magnet (2-2) is p1, the first modulation ring (3) comprises a first magnetic modulation block (3-1) and a first magnetic isolation block (3-2), the first magnetic modulation block (3-1) and the first magnetic isolation block (3-2) are arranged at intervals, the number of the first magnetic modulation blocks (3-1) is p3, the first outer magnetic ring (5) comprises a first outer magnetic yoke (5-1) and a first outer magnet (5-2), the number of magnetic pole pairs of the first outer magnet (5-2) is p2, and the relationship among the number of magnetic pole pairs p1 of the first inner magnet (2-2), the number p3 of the first magnetic modulation blocks (3-1) and the number p2 of the magnetic pole pairs of the first outer magnet (5-2) is p3=p1+p2.Specifically, with respect to the structures of the second inner magnetic ring (12), the second modulation ring (11) and the second outer magnetic ring (10), the second inner magnetic ring (12) comprises a second inner magnetic yoke (12-1) and a second inner magnet (12-2), the number of magnetic pole pairs of the second inner magnet (12-2) being p4, the second modulation ring (11) comprising a second magnetic modulation block (11-1) and a second magnetic isolation block (11-2), the second magnetic modulation block (11-1) and the second magnetic isolation block (11-2) being -2) are arranged at intervals, the number of the second magnetic adjustment blocks (11-1) is p6, the second outer magnetic ring (10) comprises a second outer magnetic yoke (10-1) and a second outer magnet (10-2), the number of magnetic pole pairs of the second outer magnet (10-2) is p5, the relationship between the number of magnetic pole pairs of the second inner magnet (12-2) p4, the number of the second magnetic adjustment blocks (11-1) p6 and the number of magnetic pole pairs of the second outer magnet (10-2) p5 is p6=p4+p5. Specifically, with regard to the positions of the first end cover (4) and the second end cover (6), the two end surfaces of the first outer magnetic ring (5) are respectively fixed to the first end cover (4) and the second end cover (6), the first end cover (4) is connected to the input shaft (1) through the first bearing (16), one end of the input shaft (1) passes through the first end cover (4), and the second end cover (6) is connected to the flange (7) through the fourth bearing (19). Specifically, as to the connection mode between the first modulation ring (3) and the input shaft (1), the first modulation ring (3) is connected to the input shaft (1) via the second bearing (17) and the third bearing (18). Specifically, as to the positions of the third end cover (9) and the fourth end cover (13), the two end surfaces of the second outer magnetic ring (10) are respectively fixed to the third end cover (9) and the fourth end cover (13), the third end cover (9) is connected to the transition shaft (8) via the fifth bearing (20), the fourth end cover (13) is connected to the output shaft (14) via the eighth bearing (23), and one end of the output shaft (14) passes through the fourth end cover (13). Specifically, as to the connection mode between the second modulation ring (11) and the transition shaft (8), the second modulation ring (11) is connected to the transition shaft (8) via the sixth bearing (21) and the seventh bearing (22). Specifically, as to the connection mode between the second end cover (6) and the third end cover (9), the second end cover (6) and the third end cover (9) are connected via a dustproof ring (15).

[0021] When the two-stage series magnetic wheel transmission device of the present invention is used, the input shaft (1) drives the first inner magnetic ring (2) to rotate, the magnetic field of the first inner magnetic ring (2) is modulated by the first modulation ring (3) and then acts on the first outer magnetic ring (5), thereby driving the first modulation ring (3) to rotate at a low speed, the first modulation ring (3) drives the transition shaft (8) to rotate through the flange (7), the transition shaft (8) drives the second inner magnetic ring (12) to rotate, the magnetic field of the second inner magnetic ring (12) is modulated by the second modulation ring (11) and then acts on the second outer magnetic ring (10), thereby driving the second modulation ring (11) to rotate, and the second modulation ring (11) drives the output shaft (14) to run to complete the two-stage speed change process.

[0022] The present invention realizes two-stage transmission by connecting two magnetic wheel transmission devices in series. The input shaft (1) drives the first inner magnetic ring (2) to rotate, which drives the first modulation ring (3) to rotate at a low speed. The first modulation ring (3) drives the transition shaft (8) to rotate. The transition shaft (8) drives the second inner magnetic ring (12) to rotate, which drives the second modulation ring (11) to rotate. The second modulation ring (11) drives the output shaft (14) to run and complete the two-stage speed change process. The two-stage series magnetic wheel transmission device has a compact and simple structure, a large transmission ratio, a large torque density, and is suitable for popularization and use.

[0023] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims

1. A two-stage tandem magnetic wheel transmission device, comprising an input shaft (1), a first inner magnetic ring (2), a first modulation ring (3), a first outer magnetic ring (5), a flange (7), a transition shaft (8), a second outer magnetic ring (10), a second modulation ring (11), a second inner magnetic ring (12), and an output shaft (14), characterized in that: The input shaft (1) is transmission-connected to the first inner magnetic ring (2); the first inner magnetic ring (2), the first modulation ring (3) and the first outer magnetic ring (5) are concentrically sleeved together; the first inner magnetic ring (2) is located in the inner cavity of the first modulation ring (3) and is separated by an air gap; the first modulation ring (3) is located in the inner cavity of the first outer magnetic ring (5) and is separated by an air gap; the first outer magnetic ring (5) is fixed; the first modulation ring (3) is transmission-connected to the flange (7); the flange (7) is transmission-connected to the transition shaft (8); the transition shaft (8) is transmission-connected to the second inner magnetic ring (12); the second inner magnetic ring (12) and the second modulation ring (3) are transmission-connected to the first outer magnetic ring (5); The ring (11) and the second outer magnetic ring (10) are concentrically mounted together, the second inner magnetic ring (12) is located in the inner cavity of the second modulation ring (11) and separated by an air gap, the second modulation ring (11) is located in the inner cavity of the second outer magnetic ring (10) and separated by an air gap, the second outer magnetic ring (10) is fixed, and the second modulation ring (11) is transmission-connected to the output shaft (14), and the above arrangement constitutes a two-stage series magnetic wheel transmission device; the input shaft (1) drives the first inner magnetic ring (2) to rotate, and the magnetic field of the first inner magnetic ring (2) is modulated by the first modulation ring (3) and then acts on the first outer magnetic ring (5), thereby driving The first modulation ring (3) rotates at a low speed, the first modulation ring (3) drives the transition shaft (8) to rotate through the flange (7), the transition shaft (8) drives the second inner magnetic ring (12) to rotate, the magnetic field of the second inner magnetic ring (12) is modulated by the second modulation ring (11) and then acts on the second outer magnetic ring (10), thereby driving the second modulation ring (11) to rotate, and the second modulation ring (11) drives the output shaft (14) to run to complete the secondary speed change process; the first inner magnetic ring (2) comprises a first inner magnetic yoke (2-1) and a first inner magnet (2-2), the number of magnetic pole pairs of the first inner magnet (2-2) is p1 The first modulation ring (3) comprises a first magnetic modulation block (3-1) and a first magnetic isolation block (3-2), the first magnetic modulation block (3-1) and the first magnetic isolation block (3-2) are arranged at intervals, the number of the first magnetic modulation blocks (3-1) is p3, the first outer magnetic ring (5) comprises a first outer magnetic yoke (5-1) and a first outer magnet (5-2), the number of magnetic pole pairs of the first outer magnet (5-2) is p2, and the relationship between the number of magnetic pole pairs p1 of the first inner magnet (2-2), the number p3 of the first magnetic modulation blocks (3-1) and the number p2 of the magnetic pole pairs of the first outer magnet (5-2) is p3=p1+p2;The second inner magnetic ring (12) comprises a second inner magnetic yoke (12-1) and a second inner magnet (12-2), the number of magnetic pole pairs of the second inner magnet (12-2) is p4, the second modulation ring (11) comprises a second magnetic modulation block (11-1) and a second magnetic isolation block (11-2), the second magnetic modulation block (11-1) and the second magnetic isolation block (11-2) are arranged at intervals, the number of the second magnetic modulation blocks (11-1) is p6, the second outer magnetic ring (10) comprises a second outer magnetic yoke (10-1) and a second outer magnet (10-2), the number of magnetic pole pairs of the second outer magnet (10-2) is p5, and the relationship between the number of magnetic pole pairs p4 of the second inner magnet (12-2), the number p6 of the second magnetic modulation blocks (11-1) and the number p5 of the magnetic pole pairs of the second outer magnet (10-2) is p6=p4+p5.

2. A two-stage series magnetic wheel transmission device according to claim 1, characterized in that: The two end surfaces of the first outer magnetic ring (5) are respectively fixed to the first end cover (4) and the second end cover (6); the first end cover (4) is connected to the input shaft (1) via a first bearing (16); one end of the input shaft (1) passes through the first end cover (4); and the second end cover (6) is connected to the flange (7) via a fourth bearing (19).

3. A two-stage series magnetic wheel transmission device according to claim 1, characterized in that: The first modulation ring (3) is connected to the input shaft (1) via a second bearing (17) and a third bearing (18).

4. A two-stage series magnetic wheel transmission device according to claim 1, characterized in that: The two end surfaces of the second outer magnetic ring (10) are respectively fixed to the third end cover (9) and the fourth end cover (13); the third end cover (9) is connected to the transition shaft (8) via a fifth bearing (20); the fourth end cover (13) is connected to the output shaft (14) via an eighth bearing (23); and one end of the output shaft (14) passes through the fourth end cover (13).

5. A two-stage series magnetic wheel transmission device according to claim 1, characterized in that: The second modulation ring (11) is connected to the transition shaft (8) via a sixth bearing (21) and a seventh bearing (22).

6. A two-stage series magnetic wheel transmission device according to claim 2, characterized in that: The second end cover (6) and the third end cover (9) are connected via a dustproof ring (15).

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