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[CN 202110423698.8] Multi-mode hydro-mechanical stepless speed change device for grain harvester
[CN 202110423698.8] A multi-mode hydraulic-mechanical stepless speed change device for grain harvesters Title: A multi-mode hydraulic-mechanical stepless speed change device for grain harvesters Application number: CN 202110423698.8 Applicant: China University of Petroleum (East China) Application date: 2021-4-20 Patent type: Invention application The present invention discloses a multi-mode hydraulic-mechanical stepless speed change device for grain harvesters, including: a power input shaft, one end of which is connected with an engine, the other end is connected with the power take-off; the first gear, which is selectively connected with the power input shaft; the second gear, which is selectively connected with the power input shaft; the third gear, which meshes with the first gear; the hydraulic variable input shaft, one end of which is coaxially and fixedly connected with the third gear, and the other end of which is connected with the variable hydraulic pump; the quantitative hydraulic motor, which is connected with the variable hydraulic pump; the first planetary row and the second planetary row; wherein the second planet carrier is fixedly connected to the first ring gear; the second gear is connected to the first planet carrier in transmission; the hydraulic motor output shaft selectively transmits power to the first sun gear or The second ring gear; the second sun gear or the second planet carrier selectively connects different gear actuators, and transmits power to the power output shaft through the gear actuators.
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