公开(公告)号：EP4343173A1

公开(公告)日：2024-03-27

申请号：EP23151177.5

申请日：2023-01-11

申请人： Zhejiang Dingli Machinery Co., LTD.

发明人： XU, SHUGEN ,  XU, ZHONG

IPC分类号： F16H25/22 ,  F16H25/24 ,  F16H57/04

摘要： The present disclosure relates to the technical field of aerial work platforms, in particular to a linear actuator with a contact type safety nut, and an aerial work platform. The linear actuator includes a central screw, a driving nut mechanism, and a safety nut mechanism. The central screw has a screw raceway. The safety nut mechanism includes a safety nut seat sleeved at the periphery of the central screw. Limit hole channels pointing to the central screw are arranged on the safety nut seat. An elastic buffer element is arranged in each of the limit hole channels. A safety ball is arranged between the elastic buffer element and the central screw. The contact type safety nut enables the linear actuator to always keep safety, stability, and no loss of accuracy in a conversion process that the safety nut mechanism gets involved to take effect while the driving nut mechanism fails.