公开(公告)号：US11772947B1

公开(公告)日：2023-10-03

申请号：US18199968

申请日：2023-05-21

申请人： Kangjun Huang

发明人： Shouqi Huang

IPC分类号： F16H25/20 ,  B66F17/00 ,  B66F3/44 ,  F16H25/24

CPC分类号： B66F17/00 ,  B66F3/44 ,  F16H25/20 ,  F16H25/2454 ,  F16H2025/2081

摘要： A jacking machine includes a main body, a support leg, a ball screw assembly, a power device, a braking device, and a self-locking device. The self-locking device includes: a chainring surrounding and fixedly connected to the screw rod, a toothed claw corresponding to the chainring and rotatably connected to a side of the main body, a first elastic member providing force to the toothed claw, and an electric actuator. A control method thereof includes after receiving a jack-up command, controlling the braking device to leave a braking state, and controlling the toothed claw to switch to a disengaged state, controlling the power device to drive the support leg and the main body to move relatively, and after receiving a stop command, controlling the braking device to enter the braking state, and controlling the toothed claw to switch to an engaged state.