摘要
汽车玻璃自动升降器随着人们生活水平的提高，出租车、私家车越来越普及，但能够实现自动开关门的轿车尚属少数。
论文对车门的结构及其所涉及的相关机构、液压控制的发展现状及应用等相关特性信息作了简介。设计了一套由驾驶员操作的自动开关门系统，系统采用液压操作，液压缸作为执行机构驱动车门，实现开关。液压缸则由驾驶员通过节流阀和换向阀来操作。
论文完成了液压控制回路、传动机构的设计。液压控制回路的油道，设计在一阀块内，各控制阀按逻辑关系安装在适当的位置，组成控制回路。液压缸推动车门的传动装置采用了摇杆滑块机构， 实现直线运动向曲线运动的转换。
关键词：自动开关门；液压控制回路；传动机构；

ABSTRACT
With the improvement on life level , the taxi and car become prevalent , but the one which can carry automatic gate while passengers on or off , has not turned up.
The sheme carries full introduce from powered mechanism to hydraulic power system which can manage the process .It designs on-off automatic gate system operated by driver , which runs with hydraulic system . As the actuator driving gate , hydraulic cylinder manger the on-off process , carried with throttle valve and change valve by driver .
The thesis shows the design of hydraulic duct pilot and the drive . The duct in a valve body , and all kinds of control vavles fixed in the right position  , make up of the duct polit . The drive of hydraulic cylinder which force the gate introduces swinging link slide mechanism , changes linear motion to the curvilinear.
Keyword words: automatic gate ; hydraulic duct pilot ; drive.
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