US 12,135,073 B2
Mechanical-double ring-hydraulic composite transmission mechanism
Qing Yu, Zhenjiang (CN); Zhen Zhu, Zhenjiang (CN); Rui Hou, Zhenjiang (CN); Long Chen, Zhenjiang (CN); Yingfeng Cai, Zhenjiang (CN); Xiang Tian, Zhenjiang (CN); Xiaodong Sun, Zhenjiang (CN); Jiangyi Han, Zhenjiang (CN); Changgao Xia, Zhenjiang (CN); Yihan Zhang, Zhenjiang (CN); and Jie Sheng, Zhenjiang (CN)
Assigned to JIANGSU UNIVERSITY, Zhenjiang (CN)
Appl. No. 18/279,598
Filed by JIANGSU UNIVERSITY, Zhenjiang (CN)
PCT Filed Feb. 28, 2022, PCT No. PCT/CN2022/078145
§ 371(c)(1), (2) Date Aug. 31, 2023,
PCT Pub. No. WO2023/159534, PCT Pub. Date Aug. 31, 2023.
Claims priority of application No. 202210180053.0 (CN), filed on Feb. 25, 2022.
Prior Publication US 2024/0280166 A1, Aug. 22, 2024
Int. Cl. F16H 47/04 (2006.01); F16H 37/08 (2006.01)
CPC F16H 47/04 (2013.01) [F16H 37/084 (2013.01); F16H 2200/2007 (2013.01); F16H 2200/2035 (2013.01); F16H 2200/2053 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A mechanical-double ring-hydraulic composite transmission mechanism, comprising an input member, a convergence mechanism, a hydraulic transmission mechanism, a double ring mechanism, an output member, a clutch assembly, and a brake assembly, wherein the convergence mechanism comprises a left planetary gear train and a right planetary gear train, the clutch assembly connects the left planetary gear train to the right planetary gear train, the clutch assembly connects the input member to the hydraulic transmission mechanism, the double ring mechanism, the left planetary gear train, and the right planetary gear train, the clutch assembly connects the hydraulic transmission mechanism to the right planetary gear train, the clutch assembly connects the double ring mechanism to the left planetary gear train, and the clutch assembly connects the left planetary gear train and the right planetary gear train to the output member; a continuous transmission ratio between the input member and the output member is provided by adjusting a displacement ratio of the hydraulic transmission mechanism, adjusting a transmission ratio of the double ring transmission mechanism, and selectively controlling engagement of the clutch assembly and the brake assembly;
transmission modes comprising mechanical transmissions, double ring transmissions, hydraulic transmissions, mechanical-double ring composite transmissions, and mechanical-hydraulic composite transmissions are provided between the input member and the output member by adjusting the displacement ratio of the hydraulic transmission mechanism, adjusting the transmission ratio of the double ring transmission mechanism, and selectively controlling engagement of the clutch assembly and the brake assembly;
wherein the left planetary gear train comprises a left ring gear, a left planet carrier, and a left sun gear; the right planetary gear train comprises a right ring gear, a right planet carrier, and a right sun gear; the right ring gear is connected to the left planet carrier; and the left sun gear is connected to the right sun gear;
the clutch assembly comprises a fifth clutch (C5), a sixth clutch (C6), a seventh clutch (C7), an eighth clutch (C8), a ninth clutch (C9), a tenth clutch (C10), and an eleventh clutch (C11), wherein the fifth clutch (C5) is configured for selectively connecting the input member to the left planet carrier; the sixth clutch (C6) is configured for selectively connecting the input member to the right sun gear; the seventh clutch (C7) and the eighth clutch (C8) are configured for selectively connecting the left ring gear to the output member at different speed ratios; the ninth clutch (C9) and the tenth clutch (C10) are configured for selectively connecting the right planet carrier to the output member at different speed ratios; and the eleventh clutch (C11) is configured for selectively connecting the left planet carrier to the left sun gear;
the brake assembly comprises a first brake (B1), a second brake (B2), and a third brake (B3), wherein the first brake (B1) is configured for selectively connecting the left ring gear to a fixed member; the second brake (B2) is configured for selectively connecting the right ring gear to a fixed member; and the third brake (B3) is configured for selectively connecting the left planet carrier to a fixed member;
forward mechanical transmission (M1) is provided between the input member and the output member by engaging the fifth clutch (C5), the seventh clutch (C7), and the eleventh clutch (C11), and a rotation speed of the input member and a rotation speed of the output member in the forward mechanical transmission (M1) satisfy the following relationship:

OG Complex Work Unit Math
wherein no is the rotation speed of the output member, nI is the rotation speed of the input member, i5 is a transmission ratio between the input member and the left planet carrier, and i7 is a transmission ratio between the left ring gear and the output member;
reverse mechanical transmission (M2) is provided between the input member and the output member by engaging the fifth clutch (C5), the eighth clutch (C8), and the eleventh clutch (C11), and the rotation speed of the input member and the rotation speed of the output member in the reverse mechanical transmission (M2) satisfy the following relationship:

OG Complex Work Unit Math
wherein i8i9 is a transmission ratio between the left ring gear and the output member.