公开(公告)号：US10895154B2

公开(公告)日：2021-01-19

申请号：US16088437

申请日：2017-11-02

Applicant: China University of Mining and Technology

Inventor： Qiang Zhang ,  Jixiong Zhang ,  Zhongya Wu ,  Wenyue Qi ,  Hong Yan ,  Meng Li

IPC: E21D15/60 ,  E21D15/55 ,  E21D15/20 ,  A47B91/00

Abstract: Provided is a base mechanism of a single prop capable of being unloaded at reduced pressure, including a base bottom plate and two wedge-shaped support blocks, where one of the wedge-shaped support blocks serves as a fixed wedge-shaped support block and is welded onto the base bottom plate, and the other of the wedge-shaped support blocks serves as a movable wedge-shaped support block and is connected to the fixed wedge-shaped support block by using a screw rod and a nut. The present invention can effectively unload the single prop at reduced pressure or remove the single prop in a contracted manner, is of a simple structure, is convenient to operate, has a good use effect, overcomes the technical problem that it is difficult to unload a single prop at reduced pressure in this technical feature, and is widely applicable in this technical field.