竖轴支点轴套
vertical shaft fulcrum shaft sleeve
压杆轴支撑衬铁
press lever shaft step liner
K=1曲柄摇杆机构
K=1 crank-rocker mechanisms
对心曲柄摇杆机构
opposite-center type of crank-rocker mechanism
非Grashof双摇杆
non-Grashof double-rocker
供油摇摆器轴支架
oil supply rocker shaft bracket