改进后的托盘式升降机上海邮政枢纽工程处王根妹一、概述上海市邮政局邮件封发二局是上海的函件处理中心，生产车间分布在三个楼层，四楼为开拆车间，三楼、五楼分别为进口、出口函件处理车间。三层楼面之间的函件传输由４台托盘式升降机完成。函件在四楼开拆后，由人工装... Improved post lift Shanghai Postal Hub Wang Genmei I. Overview The Shanghai Post Office Mail Sending and Sending Office is the Shanghai Mail Processing Center. The workshop is divided into three floors, the fourth floor is the open workshop, the third floor, the fifth floor Respectively for the import, export correspondence processing workshop. The transmission of correspondence between the three floors is done by 4 pallet lifts. Letters opened on the fourth floor, by artificial equipment ...