摘要
论述了夹持驮负型无杆飞机牵引车机轮夹持举升机构的结构和特点。机轮夹持举升机构主要包括夹持和举升2部分。夹持机构主要有4种结构形式,其中对称轨道式和轨道弹簧式具有结构简单、对称、所需工作空间小等优点,应用较广泛。举升机构主要有转动式和举升式,转动式举升机构结构简单,但连接承载斗与车架的球铰承受载荷较大,故其尺寸也较大;举升式举升机构的承载斗与车架通过带有2个球铰的连杆相连,每个连杆均为二力杆,故其截面尺寸较小。
The paper introduces the main structure and characteristics of the hydraulic wheel holding and lifting mechanism,which is applied in a towbarless aircraft tractor.The wheel holding and lifting mechanism includes the two parts of holding mechanism and lifting mechanism.The holding mechanism mainly has four structural forms.Two forms of them are applied widely on account of their simple and symmetric structure,and small working space.The lifting mechanism mainly have twirling form and lifting form.The twirling form has simple structure,but its dimension is large,because of the load of the spherical hinge which combines the framework and the carrying bucket.However the lifting form dimension is small, because the framework and the carrying bucket are combined by connecting rods,and every rod is a two-force rod.
出处
《起重运输机械》
2012年第4期13-15,共3页
Hoisting and Conveying Machinery
基金
民航局科技项目资助(MHRDZ 201013)
关键词
民航
无杆飞机牵引车
机轮夹持举升机构
civil aviation
towbarless aircraft tractor
hydraulic wheel holding and lifting mechanism
