US 12,222,012 B2
Magnetorheological fluid brake and control method therefor
Feng Ren, Jilin (CN); and Zhengying Jiang, Jilin (CN)
Appl. No. 17/908,874
Filed by Feng Ren, Jilin (CN)
PCT Filed Mar. 5, 2020, PCT No. PCT/CN2020/078056
§ 371(c)(1), (2) Date Sep. 1, 2022,
PCT Pub. No. WO2021/174502, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 202010134604.0 (CN), filed on Mar. 2, 2020.
Prior Publication US 2024/0200622 A1, Jun. 20, 2024
Int. Cl. F16D 57/00 (2006.01); B60T 1/087 (2006.01); F16D 65/78 (2006.01); F16D 125/08 (2012.01)
CPC F16D 57/002 (2013.01) [B60T 1/087 (2013.01); F16D 65/78 (2013.01); F16D 2065/784 (2013.01); F16D 2125/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A magnetorheological fluid brake, comprising
a main housing (8),
an inner rotor (15),
an outer rotor (14),
a side housing (4),
a heat exchanger,
a sealing portion and
a distribution passage, the outer rotor (14) and the inner rotor (15) being arranged in sequence in the main housing (8), and a shaft (1) passing through the inner rotor (15); the side housing (4) being arranged on one side of the main housing (8), and the distribution passage being arranged inside the side housing (4); the heat exchanger (9) being arranged on an other side of the main housing (8), wherein
the distribution passage comprises a high-pressure oil channel (21) and a low-pressure oil channel (5); an oil filling port (7) is in communication with the high-pressure oil channel (21), and the low-pressure oil channel (5) is in communication with an oil discharge port (6); the high-pressure oil channel (21) is provided with a high-pressure oil port (28), and the low-pressure oil channel (5) is provided with a low-pressure oil port (26); the high-pressure oil port (28) and the low-pressure oil port (26) are in communication with each other through a flow-through channel; a first field coil module (27) is provided in the high-pressure oil port (28), a second field coil module (29) is provided in the low-pressure oil port (26), and a third field coil module (30) and a fourth field coil module (31) are provided in the flow-through channel;
a bearing end cover (11) is connected to the main housing (8) via a screw (12), a connecting disc (34) is connected to the shaft (1) via a splined connection, wheel fixing bolts (35) are mounted to the connecting disc (34), a wheel is connected to the brake via the wheel fixing bolts (35), and a bolt (36) is fixed to the shaft (1) to axially position the connecting disc (34); and a silicon steel plate (38) is fixed on a side of the inner rotor and the outer rotor and connected to the main housing (8) via a countersunk screw.