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一种结构紧凑的七档行星变速机构

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一种结构紧凑的七档行星变速机构

本发明属于车辆传动技术领域,具体涉及一种重型履带车辆上传动系统的结构紧凑的七档行星自动变速机构。为满足车辆爬坡和最大车速等性能指标的需求,提供一档传动比大且整个传动范围要求宽的新的、结构更为紧凑的一种行星自动变速机构,该机构包括行星排,安装在两端分别与输入轴、输出轴连接的输入构件和输出构件,传动构件、制动器和离合器,所述行星排有四个、传动构件有六个、制动器有三个、离合器有三个,由此,本发明具有7个前进档、3个倒档;相邻档位之间可实现简单换档;传动效率高;行星轮转速低;操纵件扭矩小和换挡冲击小。

Seven-gear planetary transmission mechanism of compact structure

The invention belongs to the technical field of vehicle transmission, and particularly relates to a seven-gear planetary automatic transmission mechanism of a compact structure in a transmission system of heavy caterpillar vehicles. In order to meet the requirements for performance indexes of vehicle climbing, maximum vehicle speed and the like, the novel planetary automatic transmission mechanism with the large slowest gear ratio, wide requirement for the whole transmission range and the more compact structure is provided. The seven-gear planetary transmission mechanism comprises planetary rows, an input component, an output component, transmission components, brakes and clutches, wherein the input component and the output component are mounted at the two ends of the seven-gear planetary transmission mechanism and are connected with an input shaft and an output shaft correspondingly. The number of the planetary rows is four, the number of the transmission components is six, the number of the brakes is three, and the number of the clutches is three, so that the seven-gear planetary transmission mechanism is provided with seven forward gears and three reverse gears. The adjacent gears can be shifted simply, the transmission efficiency is high, the rotating speed of planetary gears is low, the torque of operation parts is small, and gear shifting impact is small.

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