Gear-hydraulic-rhombic pyramid integrated multi-mode hybrid transmission device

A gear-hydraulic-rhombic pyramid integrated multi-mode hybrid transmission device, comprising an input assembly, a hydraulic transmission mechanism, a front planetary gear mechanism, a rhombic pyramid-type continuously variable transmission mechanism, a rear planetary gear mechanism, an output assembly, a clutch assembly, and a brake assembly, wherein

• the clutch assembly connects an output end of the input assembly to an input end of the hydraulic transmission mechanism and an input end of the front planetary gear mechanism;
• the clutch assembly connects an output end of the hydraulic transmission mechanism to the front planetary gear mechanism and the rear planetary gear mechanism;
• the clutch assembly connects the front planetary gear mechanism to the rhombic pyramid-type continuously variable transmission mechanism, connects the rhombic pyramid-type continuously variable transmission mechanism to the rear planetary gear mechanism, and connects the rear planetary gear mechanism to the output assembly;
• the clutch assembly and the brake assembly provide a continuous transmission ratio between the input assembly and the output assembly;
• any one of or a combination of any two or three of transmission modes comprising hydraulic transmission, gear transmission, and rhombic pyramid-type continuously variable transmission is provided between the input assembly and the output assembly by adjusting a displacement ratio of the hydraulic transmission mechanism, adjusting a transmission ratio of the rhombic pyramid-type continuously variable transmission mechanism, and selectively controlling engagement of the clutch assembly and the brake assembly;
• the clutch assembly comprises a first clutch, a second clutch, a third clutch, a fifth clutch, a seventh clutch, an eighth clutch, a one-way clutch, and a tenth clutch, wherein
• the first clutch is used for selectively connecting the input assembly to the input end of the hydraulic transmission mechanism;
• the second clutch is used for selectively connecting the output end of the hydraulic transmission mechanism to a ring gear of the front planetary gear mechanism to achieve synchronous rotation;
• the third clutch is used for selectively connecting the output end of the hydraulic transmission mechanism to a planet carrier of the rear planetary gear mechanism to achieve synchronous rotation;
• the fifth clutch is used for selectively connecting a sun gear of the front planetary gear mechanism to a planet carrier of the front planetary gear mechanism to achieve synchronous rotation;
• the seventh clutch is used for selectively connecting the planet carrier of the front planetary gear mechanism to a third gear pair to achieve synchronous rotation;
• the eighth clutch is used for selectively connecting a fourth gear pair to the planet carrier of the rear planetary gear mechanism to achieve synchronous rotation;
• the third gear pair is connected to the fourth gear pair;
• the one-way clutch is used for controlling forward power transmission after the fourth gear pair is connected to the planet carrier of the rear planetary gear mechanism;
• the tenth clutch is used for selectively connecting the planet carrier of the rear planetary gear mechanism to a ring gear of the rear planetary gear mechanism to achieve synchronous rotation;
• and
• different types of hydraulic transmission are provided between the input assembly and the output assembly by adjusting the displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the first clutch, the third clutch, and the tenth clutch, or by adjusting the displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the first clutch, the second clutch, the fifth clutch, the seventh clutch, the eighth clutch, the one-way clutch, and the tenth clutch.