Mechanical-double ring-hydraulic composite transmission mechanism

Patent metadata

Field	Value
Publication number	US-12135073-B2
Application number	US-202218279598-A
Country	US
Kind code	B2
Filing date	Feb 28, 2022
Priority date	Feb 25, 2022
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A mechanical-double ring-hydraulic composite transmission mechanism includes an input member, a convergence mechanism, a hydraulic transmission mechanism, a double ring mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects a left planetary gear train to a 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. 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.

First claim

What is claimed is:

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 (C 5 ), a sixth clutch (C 6 ), a seventh clutch (C 7 ), an eighth clutch (C 8 ), a ninth clutch (C 9 ), a tenth clutch (C 10 ), and an eleventh clutch (C 11 ), wherein the fifth clutch (C 5 ) is configured for selectively connecting the input member to the left planet carrier; the sixth clutch (C 6 ) is configured for selectively connecting the input member to the right sun gear; the seventh clutch (C 7 ) and the eighth clutch (C 8 ) are configured for selectively connecting the left ring gear to the output member at different speed ratios; the ninth clutch (C 9 ) and the tenth clutch (C 10 ) are configured for selectively connecting the right planet carrier to the output member at different speed ratios; and the eleventh clutch (C 11 ) is configured for selectively connecting the left planet carrier to the left sun gear;
the brake assembly comprises a first brake (B 1 ), a second brake (B 2 ), and a third brake (B 3 ), wherein the first brake (B 1 ) is configured for selectively connecting the left ring gear to a fixed member; the second brake (B 2 ) is configured for selectively connecting the right ring gear to a fixed member; and the third brake (B 3 ) is configured for selectively connecting the left planet carrier to a fixed member;
forward mechanical transmission (M 1 ) is provided between the input member and the output member by engaging the fifth clutch (C 5 ), the seventh clutch (C 7 ), and the eleventh clutch (C 11 ), and a rotation speed of the input member and a rotation speed of the output member in the forward mechanical transmission (M 1 ) satisfy the following relationship:

n
o

=

1

i
5

⁢

i
7

⁢

n
I

,

wherein n o is the rotation speed of the output member, n I is the rotation speed of the input member, i 5 is a transmission ratio between the input member and the left planet carrier, and i 7 is a transmission ratio between the left ring gear and the output member;
reverse mechanical transmission (M 2 ) is provided between the input member and the output member by engaging the fifth clutch (C 5 ), the eighth clutch (C 8 ), and the eleventh clutch (C 11 ), and the rotation speed of the input member and the rotation speed of the output member in the reverse mechanical transmission (M 2 ) satisfy the following relationship:

n
o

=

-

1

i
5

⁢

i
8

⁢

i
9

⁢

n
I

,

wherein i 8 i 9 is a transmission ratio between the left ring gear and the output member.

2. The mechanical-double ring-hydraulic composite transmission mechanism according to claim 1 , wherein the clutch assembly further comprises a first clutch (C 1 ) and a second clutch (C 2 ), wherein the first clutch (C 1 ) is configured for selectively connecting the input member to an input end of the double ring mechanism, and the second clutch (C 2 ) is configured for selectively connecting an output end of the double ring mechanism to the left planet carrier;
a first reverse double ring transmission (T 1 ) is provided between the input member and the output member by adjusting the transmission ratio of the double ring mechanism and engaging the first clutch (C 1 ), the second clutch (C 2 ), the ninth clutch (C 9 ), and the first brake (B 1 ), and the rotation speed of the input member and the rotation speed of the output member in the first reverse double ring transmission (T 1 ) satisfy the following relationship:

n
o

=

-

1
+

k
1

+

k
2

(

1
+

Assignees

• Univ Jiangsu

Inventors

• Yu Qing
• Zhu Zhen
• Hou Rui
• Chen Long
• Cai Yingfeng
• Tian Xiang
• Sun Xiaodong
• Han Jiangyi
• Xia Changgao
• Zhang Yihan
• Sheng Jie

Classifications

• F16H2200/2053

  with nine engaging means · CPC title

• F16H2200/2035

  with two engaging means · CPC title

• F16H2200/2007

  with two sets of orbital gears · CPC title

• F16H37/084

  at least one power path being a continuously variable transmission, i.e. CVT · CPC title

• F16H57/08

  of gearings with members having orbital motion · CPC title