为了实现邮件搬运装卸机械化,我局研制了邮件进出口传送流水线,完成对进口与出口邮件的传送任务。该传送流水线,由四个部分组成,即吊桥式传送带、水平传送带、垂直升运机和滑槽(见示意图)。邮件进口时,先启动吊桥式传送带升降控制电机,放下吊桥式传送带。然后启动水平传 In order to achieve the handling of mail handling mechanization, the bureau developed a mail import and export transmission lines to complete the import and export of mail transmission tasks. The transfer line, consists of four parts, namely the suspension bridge conveyor, horizontal conveyor, vertical lift and chute (see diagram). Mail imports, the first start lifting bridge conveyor lift control motor, put down the suspension bridge conveyor. Then start level pass