The invention belongs to the technical field of vehicle transmission systems, and particularly relates to a high-power tractor transmission system which comprises a clutch input shaft, a clutch box body output shaft, a gearbox input shaft and a gearbox output shaft, a high-low-gear wet clutch assembly is arranged on the clutch input shaft; the high-low-gear wet clutch assembly comprises a high-gear clutch and a low-gear clutch, the gearbox input shaft and the gearbox output shaft are in transmission through a plurality of pairs of gears, and gear switching is conducted through an electro-hydraulic control synchronizer. By means of the characteristic that power is not interrupted during gear shifting of the high-low-gear wet clutch assembly, the electro-hydraulic gear shifting actuator is quickly combined with the synchronizer after quick oil charging of the clutch is finished under the cooperation of a control program and the transmission ratio of adjacent gears, it is guaranteed thatpower flow is not interrupted under the heavy-load traction operation working condition, smooth, sequential and continuous impact-free gear shifting of adjacent gears can be achieved; the structure issimple, the transmission efficiency is high, the cost is low, and the transmission ratio curve approximates stepless speed change.
本发明属于车辆传动系统技术领域,特指一种大功率拖拉机传动系统,包括有离合器输入轴、离合器箱体输出轴、变速箱输入轴以及变速箱输出轴,离合器输入轴上装有高低挡湿式离合器总成,高低挡湿式离合器总成包括高挡离合器与低挡离合器,变速箱输入轴与变速箱输出轴通过若干对齿轮传动,且由电液控制的同步器进行挡位切换。本发明借助高低挡湿式离合器总成在换挡时动力不中断的特性,由电液换挡执行器在控制程序及相邻挡位传动比的配合下,在离合器快速充油结束后快速结合同步器,保证在重载牵引作业工况下功率流不中断,使相邻挡位能实现平滑、顺序、连续无冲击换挡;因结构简单,传动效率高,成本低且传动比曲线近似无级变速。
High-power tractor transmission system
一种大功率拖拉机传动系统
2021-03-09
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
SAE Technical Papers | 1918
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European Patent Office | 2021
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