US Patent 10900191 Pulling-out device for prefabricated concrete support wall

A pulling-out device for a prefabricated concrete support wall, belonging to the field of concrete support structures, wherein a vertical hollow tube is pre-buried in the prefabricated concrete support wall. The pulling-out device includes a pulling-out mechanism disposed in the hollow tube by penetration, the lower end of the pulling-out mechanism is fixedly arranged in the prefabricated concrete support wall and positioned at the lower end of the hollow tube, a first fixing device for tensing the pulling-out mechanism is arranged at the upper end of the pulling-out mechanism, and the first fixing device is not connected with the prefabricated concrete support wall.